CN119982458B - A diaphragm booster pump with a buffer noise reduction mechanism - Google Patents
A diaphragm booster pump with a buffer noise reduction mechanism Download PDFInfo
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- CN119982458B CN119982458B CN202510464712.7A CN202510464712A CN119982458B CN 119982458 B CN119982458 B CN 119982458B CN 202510464712 A CN202510464712 A CN 202510464712A CN 119982458 B CN119982458 B CN 119982458B
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Abstract
本申请公开了一种具有缓冲降噪机构的隔膜增压泵，属于隔膜增压泵技术领域，其包括泵体、进液管、出液管以及底座，进液管内安装有文丘里管，文丘里管的入口段连接于进液管的入口处，以连接外接输入管道；文丘里管的出口段连通于泵体的吸液腔内；文丘里管中的喉部连通有连通管一，连通管一内滑移有活塞板一，连通管一内设有弹簧一，弹簧一的两端分别固定设置于活塞板一以及文丘里管的侧壁；文丘里管的出口段内转动设置有叶片，进液管内设有用于驱动叶片转动的第一驱动组件。本申请具有减少隔膜增压泵在工作时产生的振动和噪音，从而增加设备的使用寿命和运行稳定性的效果。
The present application discloses a diaphragm booster pump with a buffering noise reduction mechanism, belonging to the technical field of diaphragm booster pumps, which includes a pump body, a liquid inlet pipe, a liquid outlet pipe and a base, a venturi tube is installed in the liquid inlet pipe, the inlet section of the venturi tube is connected to the inlet of the liquid inlet pipe to connect the external input pipeline; the outlet section of the venturi tube is connected to the suction chamber of the pump body; the throat of the venturi tube is connected to a connecting tube 1, a piston plate 1 slides in the connecting tube 1, a spring 1 is arranged in the connecting tube 1, and the two ends of the spring 1 are respectively fixedly arranged on the piston plate 1 and the side wall of the venturi tube; a blade is rotatably arranged in the outlet section of the venturi tube, and a first driving assembly for driving the blade to rotate is arranged in the liquid inlet pipe. The present application has the effect of reducing the vibration and noise generated by the diaphragm booster pump during operation, thereby increasing the service life and operation stability of the equipment.
Description
Technical Field
The application relates to the technical field of diaphragm booster pumps, in particular to a diaphragm booster pump with a buffering noise reduction mechanism.
Background
The diaphragm booster pump is a device for realizing liquid pressurization through the reciprocating motion of a diaphragm, and the working principle of the diaphragm booster pump is to utilize a motor or pneumatic drive to deform the diaphragm and periodically compress the volume of a pump cavity so as to improve the pressure of a medium. The pump has the characteristics of strong tightness, low noise, good corrosion resistance and the like, is suitable for the fields of water treatment, industrial equipment, automobile manufacturing, household pressurization and the like, and is particularly suitable for conveying liquid containing particles or corrosivity.
In the prior art, the diaphragm booster pump comprises a pump body, wherein two sides of the pump body are respectively communicated with a liquid inlet pipe and a liquid outlet pipe, the pump body is fixedly arranged on a base through bolts, however, when a valve on the liquid inlet pipe or a valve on the liquid outlet pipe is suddenly closed, the flow of liquid is blocked, the pressure can be rapidly increased, or when the flow rate of the liquid is suddenly increased, the flow rate is accelerated, the pressure can be increased, the pump body and a pipeline system can vibrate due to pressure sudden increase, noise can be caused due to vibration, and the operation stability and the service life of equipment are influenced.
Disclosure of Invention
In order to reduce vibration and noise generated by the diaphragm booster pump during operation, thereby increasing the service life and operation stability of the apparatus. The application provides a diaphragm booster pump with a buffering and noise reduction mechanism.
The application provides a diaphragm booster pump with a buffering and noise reducing mechanism, which adopts the following technical scheme:
A diaphragm booster pump with a buffering noise reduction mechanism comprises a pump body, a liquid inlet pipe, a liquid outlet pipe and a base, wherein a venturi pipe is arranged in the liquid inlet pipe, an inlet section of the venturi pipe is connected to an inlet of the liquid inlet pipe so as to be connected with an external input pipeline, an outlet section of the venturi pipe is communicated with a liquid suction cavity of the pump body, a first communicating pipe is communicated with a throat part in the venturi pipe, a first piston plate is slipped in the first communicating pipe, a first spring is arranged in the first communicating pipe, two ends of the first spring are fixedly arranged on the first piston plate and the side wall of the venturi pipe respectively, blades are rotationally arranged in the outlet section of the venturi pipe, and a first driving component for driving the blades to rotate is arranged in the liquid inlet pipe.
By adopting the technical scheme, when liquid in the liquid inlet pipe enters the liquid suction cavity of the pump body through the venturi tube from the external input pipeline, the liquid in the liquid inlet pipe enters the contraction section of the venturi tube, the flow rate of the liquid gradually increases, the pressure of the liquid gradually decreases, when the water pressure suddenly increases, the liquid is enabled to flow into the contraction section more quickly, so that the flow rate is further increased, the pressure is correspondingly further reduced, the direct application of the excessive pressure to the pump body is avoided, the throat part of the venturi tube is the part with the smallest cross-sectional area, the flow rate of the liquid in the throat part reaches the maximum value, the pressure reaches the minimum value, the relatively small cross-sectional area of the throat part and the stable flow rate enable the liquid to form a relatively stable flowing state in the throat part, the liquid flows out of the throat part and enters the diffusion section, the cross-sectional area of the diffusion section gradually increases, the flow rate of the liquid gradually decreases, and the pressure of the liquid gradually increases, so that the lower pressure of the throat part gradually returns to a proper level, and the liquid can enter the liquid suction cavity of the pump body with relatively stable pressure.
The venturi tube buffers abrupt water pressure through the contraction section, the throat provides a stable flowing state, the diffusion section recovers and finely adjusts the liquid pressure, thus effectively relieving abrupt water pressure, stabilizing the pressure of liquid entering the pump body, reducing the impact of abrupt water pressure on the pump body, reducing vibration and noise of the pump body, prolonging the service life of the pump body and improving the working efficiency and stability of the pump body.
When the pressure mutation occurs in the liquid suction cavity of the pump body, the pressure of the throat part of the venturi tube can be increased along with the sudden decrease or the sudden increase of the pressure, the increased pressure can push the piston plate I to overcome the elasticity of the spring I, slippage occurs in the communicating pipe I, the movement of the piston plate I triggers the first driving component, the first driving component drives the blades in the outlet section of the venturi tube to rotate, the blocking area of liquid can be increased after the blades rotate, the flowing direction and speed of the liquid are changed, the impact force of the water flow on the pump body and a pipeline system is reduced, and the impact and the collision of the water flow on the pump body and the pipeline system are effectively reduced through the rotation of the blades, so that the vibration amplitude of the pump body is reduced, and the noise is further reduced.
Preferably, the first driving component comprises a piston rod I, a connecting rod I, a rack I, a gear I, a rotating rod I, a rotating plate, a connecting rod II, a sliding rod and a pushing rod I, wherein one end of the piston rod I is fixedly arranged in the piston plate I, the piston rod I slides in the connecting rod I, one end of the piston rod I extends out of the connecting rod I, the rack I slides in the liquid inlet pipe, two ends of the connecting rod I are respectively hinged to the piston rod I and the rack I, the rotating rod is rotatably arranged in the liquid inlet pipe, one end of the rotating rod I penetrates into an outlet section of the venturi tube, the gear I is fixedly arranged in the rotating rod I, the rack I is meshed with the gear I, the rotating plate is rotatably arranged in the outlet section of the venturi tube, the rotating plate I is fixedly arranged on the rotating rod I, the pushing rod I is fixedly arranged on the blade, the sliding rod I slides in the outlet section of the venturi tube, the sliding rod I slides in the two ends of the connecting rod I, and the rotating plate II is respectively arranged at two ends of the connecting rod and the rotating rod I.
According to the technical scheme, when the throat pressure of the venturi tube is increased, the increased pressure can push the piston plate I to slide in the communicating pipe I against the elasticity of the spring I, the piston plate I moves to drive the piston rod I to synchronously slide in the communicating pipe I, the piston rod I drives the connecting rod I to rotate, the connecting rod I pushes the rack I to move, the sliding driving gear I of the rack I rotates, the gear I drives the rotating rod I to rotate, the rotating rod I drives the rotating plate to rotate in the venturi tube outlet section, the rotating rod II drives the sliding rod to slide in the venturi tube outlet section through the connecting rod II, the sliding rod pushes the push rod I to move, the push rod is provided with the moving blade to rotate, so that the blocking area of the blade to liquid is increased, when the throat pressure of the venturi tube is recovered to be normal, the spring I can enable the piston plate I to reset, the blade also to return to an initial diversion state through the reverse movement of a series of mechanical structures, the whole process can adjust the blocking degree of the liquid according to the change degree of the throat pressure, water flow regulation mutation is achieved, the vibration amplitude of the pump body is reduced, and the vibration amplitude of the pump body is improved, and the environment of the pump body is improved.
Preferably, the liquid outlet pipe is provided with a pressure pulsation buffering mechanism, the pressure pulsation buffering mechanism comprises a communicating pipe II, a piston plate II, an air bag and an extrusion plate, the communicating pipe II is communicated with the liquid outlet pipe, the piston plate II is connected with an inner cavity of the communicating pipe II in a sliding mode, the air bag is installed in the communicating pipe II, the extrusion plate is slipped in the communicating pipe II, the extrusion plate is extruded by the air bag, and the pressure pulsation buffering mechanism further comprises a second driving assembly for driving the extrusion plate to extrude the air bag and a self-adaptive adjusting assembly for adjusting the volume of the air bag.
According to the technical scheme, when the diaphragm booster pump works, liquid pressure in the liquid outlet pipe can generate pulsation, the pressure pulsation can be transmitted to the inner cavity of the liquid outlet pipe through the communicating pipe II, acting force is generated on the piston plate II, when the pressure pulsation is transmitted to the communicating pipe II, the pressure change can push the piston plate II to slide in the inner cavity of the communicating pipe II, when the pressure is increased, the piston plate II moves to trigger the second driving component, the second driving component drives the extrusion plate to extrude the air bag, gas in the air bag is compressed, the air bag absorbs a part of energy caused by the pressure pulsation, so that the effect of buffering the pressure pulsation is achieved, the pressure of output liquid is more stable, the vibration of the pump body caused by the pressure pulsation is reduced, noise caused by pump body vibration is reduced, the self-adaptive adjusting component automatically adjusts the volume and rigidity of the air bag according to the specific condition of the pressure pulsation, when the pressure pulsation is large, the self-adaptive adjusting component can increase the volume of the air bag, so that more energy can be absorbed, meanwhile, the rigidity of the air bag is increased, the capacity of resisting deformation is enhanced, the air bag is high, when the air bag is subjected to rapid pressure change, the deformation is caused by rapid pressure change, the air bag is ensured, and the deformation is rapid and the air bag is caused by rapid vibration and deformation due to the high frequency.
Preferably, the second driving assembly comprises a second push rod, a top plate and a second spring, one end of the second push rod is fixedly arranged on the second piston plate, the second push rod slides in the second communicating pipe, one end of the first push rod is fixedly arranged on the second piston plate, the top plate is rotatably arranged in the second communicating pipe, a rotating rod is rotatably arranged on the second push rod, the rotating rod is rotatably arranged at one end of the top plate, and a pressing part for pressing the movement of the pressing plate is arranged at one end of the top plate, which is close to the pressing plate.
Through adopting above-mentioned technical scheme, when pressure pulsation appears in the drain pipe, pressure variation can pass through communicating pipe two and transmit to piston board two, piston board two slides in communicating pipe two, piston board two's removal can drive push rod two and slide in communicating pipe two in step, the dwang also can be along with the removal of push rod two, the dwang drives the roof and rotates in communicating pipe two around its rotation point, along with the rotation of roof, the pressure piece can contact with the stripper plate and exert pressure to it, promote the stripper plate and slide in communicating pipe two towards the direction of gasbag, and then extrude the gasbag, thereby the degree of difficulty of stripper plate extrusion gasbag has been reduced.
Preferably, the pressing member is a roller, the roller is rotatably disposed at one end of the top plate, and the roller is attached to and rolls on the extrusion plate.
Through adopting above-mentioned technical scheme, drive the roller when the roof rotates and rotate, the roll laminating stripper plate surface rolls, converts the rotary motion of roof into the linear motion of stripper plate, is rolling friction between roller and the stripper plate, reduces the vibration because of friction produces, has improved response speed simultaneously.
Preferably, the second inner wall of the communicating pipe is rotatably provided with a roller, a second spring and a pull rope are arranged in the second communicating pipe, one end of the second spring is fixedly arranged on the inner wall of the second communicating pipe, two ends of the pull rope are respectively fixedly arranged at one end of the top plate and one end of the second spring, the pull rope is attached to the side wall of the roller, and the roller guides the pull rope.
According to the technical scheme, when the piston plate II is moved due to pressure pulsation of the liquid outlet pipe, the push rod II drives the top plate to rotate around the pivot, the pull rope at one end of the top plate rotates along with the top plate to be stretched, the spring II is stretched to store elastic potential energy, the roller rotates to guide the movement direction of the pull rope, the force transmission path is stable, the spring II applies reverse reset force to the top plate through the pull rope, when the pressure pulsation is weakened, the spring II releases the elastic potential energy, the top plate is driven to reversely rotate through the pull rope to reset the extrusion plate under the action of the air bag reverse elasticity to complete a buffering period, besides, the spring II provides pretightening force to enable the top plate to be reset quickly after the pressure pulsation disappears, secondary vibration is avoided, and part of pressure pulsation energy can be converted into the elastic potential energy through the spring II, so that system energy consumption is reduced.
Preferably, the self-adaptive adjusting component comprises a gas collecting box, a connecting pipe, a pushing rod III and a connecting rod III, wherein the gas collecting box is arranged on the outer side wall of the communicating pipe II, two ends of the connecting pipe are respectively communicated with the air bag and the inner cavity of the gas collecting box, one-way valves are respectively arranged on the side wall of the gas collecting box and the connecting pipe, one-way valves are also arranged on the side wall of the air bag, a piston plate III is connected with the inner wall of the gas collecting box in a sliding mode, the pushing rod III slides on the gas collecting box, one end of the pushing rod III is fixedly arranged on the piston plate III, and two ends of the connecting rod III are respectively hinged to the pushing rod II and the pushing rod III.
By adopting the technical scheme, when the pressure pulsation of the liquid outlet pipe is increased, the piston plate II slides in the communicating pipe II and drives the push rod II to move, the push rod II drives the connecting rod III to rotate, the connecting rod III drives the push rod III to move, the push rod III drives the piston plate III to slide in the gas collecting box, air in the gas collecting box is pushed by the piston plate III, and is injected into the air bag through the one-way valve on the connecting pipe, the air bag volume is increased, when the pressure is reduced, air in the air bag is exhausted outwards through the one-way valve of the air bag, the air bag volume is reduced until the air pressure in the air bag is the same as the external atmospheric pressure, and therefore the real-time adjustment of the air bag volume is convenient to realize.
Preferably, a connecting plate is fixedly arranged on the side wall of the bottom of the pump body, a supporting plate is arranged on one side, close to the base, of the connecting plate, the supporting plate is abutted to the base, a plurality of springs III are arranged between the connecting plate and the supporting plate, and two ends of the springs III are respectively fixedly arranged on the connecting plate and the supporting plate.
By adopting the technical scheme, when the diaphragm booster pump works, vibration can be generated by the reciprocating motion of the diaphragm, the flowing of liquid, the running of mechanical parts and the like, the vibration can be transmitted to the connecting plate connected with the diaphragm booster pump through the pump body, when the pump body vibrates to enable the connecting plate to move downwards or upwards, the spring III is compressed or stretched, the spring III stores elastic potential energy to slow down the descending or ascending speed of the spring III, and vibration energy is continuously absorbed and released through the compression and stretching process of the spring III, so that the vibration of the pump body is buffered, and noise caused by the vibration of the pump body is further reduced.
Preferably, a sleeve and a piston rod II are arranged in the spring III, one end of the sleeve is fixedly arranged on the connecting plate, one end of the piston rod II is fixedly arranged on the supporting plate, one end of the piston rod II is connected with the inner wall of the sleeve in a sliding manner, a channel is arranged in the connecting pipe, a liquid storage box for storing damping liquid is arranged on the side wall of the pump body, a communicating pipe III is arranged between the liquid storage box and the connecting plate, two ends of the communicating pipe III are respectively communicated with the inner cavity of the liquid storage box and the inner cavity of the channel in the connecting pipe, damping liquid is uniformly communicated in the sleeve, the channel and the communicating pipe III, a ball valve is arranged on the communicating pipe III, and a third driving assembly for driving a valve body rotating shaft in the ball valve is arranged outside the pump body.
According to the technical scheme, when the pump body vibrates due to liquid pulsation, the vibration is transmitted to the sleeve and the piston rod II in the spring through the connecting plate, the sleeve and the piston rod II slide relatively due to the vibration, damping liquid in the sleeve flows under the extrusion of the piston rod II and flows into the liquid storage box through the channel and the communicating pipe, viscous resistance is generated when the damping liquid flows in the channel, the third driving assembly is triggered when the liquid pulsation vibrates, the third driving assembly can drive the rotating shaft of the ball valve body to rotate according to the vibration intensity so as to change the opening and closing degree of the ball valve, when the vibration is strong, the third driving assembly reduces the opening and closing degree of the ball valve, so that the flow resistance of the damping liquid is increased, the flow speed is reduced, the damping effect is enhanced, the rigidity of the system is increased, high-frequency vibration is restrained, and when the vibration is weak, the opening and closing degree of the ball valve is increased, the flow of the liquid is smooth, and the damping is reduced, and excessive damping is avoided.
Preferably, the third driving assembly comprises a push rod IV, a rack II and a rotary rod II, one end of the push rod IV is fixedly arranged on the push rod II, one end of the rack II is fixedly arranged on the push rod IV, the rotary rod II is rotationally arranged on the outer side wall of the pump body, one end of the rotary rod II is fixedly arranged on a rotary shaft of the valve body in the ball valve, a gear II is fixedly arranged on the rotary rod II, and the gear II is meshed with the rack II.
By adopting the technical scheme, vibration generated when the diaphragm booster pump works can enable the piston plate II and the push rod II to slide in the communicating pipe II, the movement of the push rod II can synchronously drive the push rod IV to move, the movement of the push rod IV can enable the rack II to do linear movement along with the movement of the push rod IV, when the rack II does linear movement, the gear II is driven to rotate, the rotation of the gear II can drive the rotation rod II to rotate on the outer side wall of the pump body, the rotation of the rotation rod II can directly drive the rotation shaft of the valve body in the ball valve to rotate, so that the opening and closing degree of the ball valve is reduced when the vibration intensity of the pump body is larger, the flow speed of damping liquid is reduced, and when the vibration intensity is reduced, the opening and closing degree of the ball valve is increased, and the flow speed of the damping liquid is increased.
In summary, the present application includes at least one of the following beneficial technical effects:
1. When liquid flows into the venturi tube in the liquid inlet tube from the external input pipeline, if the water pressure suddenly rises, the liquid flows into the constriction section of the venturi tube, the flow speed is increased, and the pressure is reduced; the throat pressure of the venturi tube is increased, the piston plate I is pushed to overcome the elasticity of the spring I and slide in the communicating pipe I, the piston plate I slides to drive the rotating plate to rotate, the rotating plate drives the sliding rod to slide in the outlet section of the venturi tube through the connecting rod II, the sliding rod pushes the push rod I to move, the push rod is driven by the moving blade to rotate, the contraction section, the throat and the diffusion section of the venturi tube are mutually matched, the abrupt water pressure is effectively relieved, the pressure of liquid entering the pump body is stabilized, after the blades rotate, the blocking area of the liquid is increased, the flowing direction and speed of the liquid are changed, the impact force of water flow on the pump body and a pipeline system is reduced, the vibration amplitude of the pump body is further reduced, the impact of abrupt water pressure on the pump body is reduced, the service life of the pump body is prolonged, and the working efficiency and the stability of the pump body are improved;
2. When the diaphragm booster pump works, the liquid pressure in the liquid outlet pipe generates pulsation, the pressure pulsation is transmitted to the inner cavity of the liquid outlet pipe through the communicating pipe II, and the piston plate II is pushed to slide in the inner cavity of the communicating pipe II; the second driving component is triggered by the movement of the piston plate II, and drives the top plate to rotate, so that a roll shaft at one end of the top plate rolls on the surface of the extrusion plate to push the extrusion plate to extrude the air bag; meanwhile, when the second push rod moves, the third piston plate can be driven to slide in the gas collecting box, and air in the gas collecting box is pushed by the third piston plate to be injected into the air bag through the one-way valve on the connecting pipe, so that the volume of the air bag is increased; when the pressure is reduced, the air in the air bag is exhausted outwards through the one-way valve of the self-adaptive adjusting component, and the air bag volume is increased to absorb more energy when the pressure pulsation is larger, meanwhile, the air bag rigidity is increased, the secondary vibration caused by the excessive deformation of the air bag is reduced, and the quick response in high-frequency pulsation is ensured;
3. When the diaphragm booster pump vibrates due to liquid pulsation, the spring III is compressed or stretched, vibration energy is continuously absorbed and released by the spring III, vibration of the pump body is buffered, noise caused by vibration of the pump body is reduced, the sleeve in the spring III and the piston rod II slide relatively due to vibration, damping liquid in the sleeve flows under extrusion of the piston rod II and flows into the liquid storage box through a channel in the connecting pipe and the communicating pipe, meanwhile, when pulsation is generated in the liquid outlet pipe due to liquid pressure, the piston plate II and the push rod II slide in the communicating pipe II, the push rod II can drive the valve body in the ball valve to rotate so as to change the opening and closing degree of the ball valve, when the vibration intensity of the pump body is larger, the opening and closing degree of the ball valve is reduced, the damping liquid flow speed is reduced, high-frequency vibration is restrained, excessive damping is avoided, and the stability and reliability of the operation of the pump body are further improved.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a schematic view showing the structure of a highlighting venturi in an embodiment of the present application;
FIG. 3 is a schematic view showing the structure of a highlighting blade in an embodiment of the present application;
FIG. 4 is a schematic view showing the structure of an airbag according to an embodiment of the present application;
Fig. 5 is an enlarged view at a in fig. 4;
fig. 6 is an enlarged view at B in fig. 4.
Reference numerals illustrate:
1. A pump body; 2, a liquid inlet pipe; 3, a liquid outlet pipe; 4, base, 5, venturi tube, 6, first communication tube, 7, first piston plate, 8, first spring, 9, vane, 10, first drive assembly, 101, first piston rod, 102, first connecting rod, 103, first rack, 104, first gear, 105, first rotating rod, 106, second rotating plate, 107, second connecting rod, 108, sliding rod, 109, first push rod, 110, guide rod, 111, guide block, 112, first chute, 12, pressure pulsation buffer mechanism, 121, second communication tube, 122, second piston plate, 123, airbag, 124, squeeze plate, 125, first diaphragm, 126, upper cavity, 128, second diaphragm, 129, left cavity, 130, right cavity, 13, second drive assembly, 131, second push rod, 132, top plate, 133, rotating rod, 134, guide plate, 135, roller shaft, 14, self-adaptive adjustment assembly, 141, gas collecting box, 142, 143, third push rod, 144, third connecting rod, 145, third piston plate, 15, roller, 16, second spring, 17, 18, 19, upper cavity, 128, second diaphragm, 129, left cavity, 130, right cavity, 13, second drive assembly, 131, second drive assembly, second piston rod, third piston rod, 262, second piston rod, third piston rod, second piston assembly, second piston rod, fourth piston rod, second piston rod, fourth piston assembly.
Detailed Description
The application is described in further detail below with reference to fig. 1-6.
The embodiment of the application discloses a diaphragm booster pump with a buffering and noise-reducing mechanism, which comprises a pump body 1, a liquid inlet pipe 2, a liquid outlet pipe 3 and a base 4, wherein a venturi pipe 5 is arranged in the liquid inlet pipe 2, an inlet section of the venturi pipe 5 is connected to an inlet of the liquid inlet pipe 2 so as to be connected with an external input pipeline, an outlet section of the venturi pipe 5 is communicated with a liquid suction cavity of the pump body 1, and a first communicating pipe 6 is communicated with a throat part in the venturi pipe 5.
As shown in fig. 2 and 3, a piston plate 7 is slipped in a communicating pipe 6, a spring 8 is arranged in the communicating pipe 6, two ends of the spring 8 are fixedly connected to the piston plate 7 and the side wall of the venturi tube 5 respectively, a plurality of blades 9 are sequentially arranged in the outlet section of the venturi tube 5 in a rotating manner along the circumferential direction, one ends of the blades 9 are fixedly connected with connecting columns, the connecting columns are rotatably connected to the inner wall of the venturi tube 5, and a first driving assembly 10 for driving the blades 9 to rotate is arranged in the liquid inlet tube 2.
As shown in fig. 1 and 2, when liquid flows from the external input pipeline through the venturi tube 5 and enters the liquid suction cavity of the pump body 1, when the liquid in the liquid inlet pipe 2 enters the constriction section of the venturi tube 5, the cross-sectional area of the pipeline gradually decreases, the flow rate of the liquid gradually increases, the pressure of the liquid gradually decreases, when the water pressure suddenly increases, the pressure of the liquid is increased to enable the liquid to flow into the constriction section more quickly, so that the flow rate is further increased, the pressure is correspondingly further reduced, the excessive pressure is prevented from being directly applied to the pump body 1, the throat of the venturi tube 5 is the part with the smallest cross-sectional area, the flow rate of the liquid reaches the maximum value at the throat, the pressure reaches the minimum value, the relatively small cross-sectional area and the stable flow rate of the throat enable the liquid to form a relatively stable flow state at the throat, the cross-sectional area of the diffusion section gradually increases after the liquid flows out of the throat, the flow rate of the liquid gradually decreases, and the pressure of the liquid gradually increases, so that the lower pressure of the throat gradually returns to a proper level, and the liquid can enter the liquid suction cavity of the pump body 1 with relatively stable pressure.
As shown in fig. 1 and 2, the venturi tube 5 buffers abrupt water pressure through the contraction section, the throat provides a stable flowing state, and the diffusion section recovers and finely adjusts the liquid pressure, so that the abrupt water pressure is effectively relieved, the pressure of the liquid in the pump body 1 is stabilized, the impact of the abrupt water pressure on the pump body 1 is reduced, the vibration and noise of the pump body 1 are reduced, the service life of the pump body 1 is prolonged, and the working efficiency and stability of the pump body 1 are improved.
As shown in fig. 2 and 3, when the diaphragm booster pump is in a normal working state, the pressure of the throat of the venturi tube 5 is relatively stable, the piston plate 7 is in an initial position under the action of the spring 8, the first driving component 10 does not act, the vane 9 is in an initial diversion state, the obstruction to the flow of liquid is small, the liquid can smoothly enter the pump body 1, when the pressure mutation occurs in the liquid suction cavity of the pump body 1, the pressure of the throat of the venturi tube 5 is also increased when the liquid flow in the liquid suction cavity of the liquid inlet tube 2 suddenly decreases or the pressure suddenly increases, the increased pressure can push the piston plate 7 to overcome the elastic force of the spring 8, the sliding occurs in the communicating tube 6, the movement of the piston plate 7 triggers the first driving component 10, the first driving component 10 drives the vane 9 in the outlet section of the venturi tube 5 to rotate, the vane 9 increases the blocking area to the liquid, the flow direction and speed of the liquid are changed, the impact force of the water flow to the pump body 1 and a pipeline system is reduced, the impact and the collision of the water flow to the pump body 1 and the pipeline system are effectively reduced through the rotation of the vane 9, and the vibration amplitude of the pump body 1 is further reduced.
As shown in fig. 2 and 3, the first driving assembly 10 comprises a piston rod 101, a connecting rod 102, a rack 103, a gear 104, a rotating rod 105, a rotating plate 106, a connecting rod 107, a sliding rod 108 and a pushing rod 109, wherein one end of the piston rod 101 is fixedly connected with the piston plate 7, the piston rod 101 slides in the connecting pipe 6, one end of the piston rod 101 extends out of the connecting pipe 6, the rack 103 slides in the liquid inlet 2 along the axial direction of the liquid inlet 2, a guide rod 110 is fixedly arranged on the inner wall of the liquid inlet 2, the axial line of the guide rod 110 is parallel to the axial line of the liquid inlet 2, a guide block 111 is fixedly connected to the rack 103, the guide rod 110 penetrates through and slides on the guide block 111, two ends of the connecting rod 102 are respectively hinged with the piston rod 101 and the rack 103, the rotating rod 105 is arranged in the liquid inlet 2, one end of the rod 105 penetrates through an outlet section of the venturi 5, the rotating rod 105 is sealed on the side wall of the venturi 5, the gear 104 is sleeved and fixed at one end of the rod 105, one end of the rack 103 is sleeved and fixed on the end of the venturi 5, one end of the rotating rod 104 is meshed with one end of the blade 108 of the venturi 108 in the annular segment 9, which is arranged in the side of the piston rod 108, which is fixedly connected with one end of the piston rod 108, which is arranged in the annular segment 109, and is arranged in the side of the inlet section of the piston rod 108, which is arranged in the inlet 9, and is adjacent to the inlet section of the blade segment 9, which is fixedly connected with the blade segment of the blade 108, and one end of the piston rod 108, which is arranged in the side of the piston rod 9, the inner side wall of the slide bar 108 is provided with a first slide groove 112 for sliding the first push rod 109 along the circumferential direction of the slide bar 108, and two ends of the second connecting rod 107 are respectively connected with the top side wall of the rotating plate 106 and one side of the slide bar 108 close to the pump body 1 in a rotating way.
As shown in fig. 2 and 3, when the throat pressure of the venturi tube 5 is increased, the increased pressure pushes the piston plate 7 to slide in the communicating tube 6 against the elastic force of the spring 8, the movement of the piston plate 7 drives the piston rod 101 to slide in the communicating tube 6 synchronously, the piston rod 101 drives the connecting rod 102 to rotate, the connecting rod 102 pushes the rack 103 to move, the sliding driving gear 104 of the rack 103 rotates, the gear 104 drives the rotating rod 105 to rotate, the rotation of the rotating rod 105 drives the rotating plate 106 to rotate in the outlet section of the venturi tube 5, the rotation of the rotating plate 106 drives the sliding rod 108 to slide in the outlet section of the venturi tube 5 through the connecting rod 107, the sliding rod 108 pushes the pushing rod 109 to move, the pushing rod 109 drives the blade 9 to rotate, so that the blocking area of the blade 9 is increased, when the throat pressure of the venturi tube 5 returns to normal, the elastic force of the spring 8 enables the piston plate 7 to reset, the blade 9 returns to the initial diversion state through the reverse movement of the series of mechanical structures, the whole process enables the blade 9 to adjust the blocking degree of liquid according to the change degree of the pressure, the noise of the water flow is reduced, the vibration of the pump body 1 is effectively buffered, the vibration of the pump body is reduced, and the vibration environment is reduced, and the noise is reduced.
As shown in fig. 1 and 4, the liquid outlet pipe 3 is provided with a pressure pulsation buffer mechanism 12, the pressure pulsation buffer mechanism 12 comprises a communicating pipe two 121, a piston plate two 122, an air bag 123 and a squeezing plate 124, the communicating pipe two 121 is communicated with an inner cavity of the liquid outlet pipe 3, the piston plate two 122 is located at a position, close to the liquid outlet pipe 3, in the communicating pipe two 121, and is slidably connected to an inner wall of the communicating pipe two 121, a first partition plate 125 is fixedly connected to the inner wall of the communicating pipe two 121, the first partition plate 125 is horizontally arranged, the inner cavity of the communicating pipe two 121 is divided into an upper cavity 126 and a lower cavity, a second partition plate 128 is fixedly connected to the inner wall of the lower cavity of the communicating pipe two 121, the second partition plate 128 is vertically arranged, the lower cavity of the communicating pipe two 121 is divided into a left cavity 129 and a right cavity 130, a side wall of the air bag 123 is fixedly connected to the inner wall of the right cavity 130, the squeezing plate 124 slides in a vertical direction and is squeezed by the air bag 123, the pressure pulsation buffer mechanism 12 further comprises a second driving component 13 for driving the squeezing plate 124 to squeeze the air bag 123, and an adaptive adjusting component 14 for adjusting the volume of the air bag 123.
As shown in fig. 1 and 4, when the diaphragm booster pump works, the liquid pressure in the liquid outlet pipe 3 can generate pulsation, the pressure pulsation can be transmitted to the inner cavity of the liquid outlet pipe through the second communicating pipe 121, acting force is generated on the second piston plate 122, when the pressure pulsation is transmitted to the second communicating pipe 121, the pressure change can push the second piston plate 122 to slide in the inner cavity of the second communicating pipe 121, when the pressure is increased, the second piston plate 122 is triggered to move, the second driving component 13 drives the extruding plate 124 to extrude the air bag 123, gas in the air bag 123 is compressed, the air bag 123 absorbs a part of energy caused by the pressure pulsation, so that the effect of buffering the pressure pulsation is achieved, the pressure of the output liquid is more stable, vibration of the pump body 1 caused by the pressure pulsation is reduced, and noise caused by the vibration of the pump body 1 is reduced, when the pressure pulsation is larger, the self-adaptive adjusting component 14 can increase the volume of the air bag 123, so that the air bag 123 can absorb more energy, meanwhile, the rigidity of the air bag 123 is increased, the capacity of resisting deformation is enhanced, the air bag 123 is rapidly responds to the rapid deformation caused by the high pressure change, and the air bag 123 is rapidly deformed due to the high frequency when the pressure pulsation is reduced.
As shown in fig. 4, 5 and 6, the second driving assembly 13 includes a second push rod 131 and a top plate 132, the second push rod 131 is vertically disposed, the top end of the second push rod 131 is fixedly connected to the second piston plate 122, the second push rod 131 vertically slides in the upper cavity 126, the bottom end of the second push rod 131 passes through the first partition plate 125 and extends into the lower cavity, the top plate 132 passes through the second partition plate 128, a rotating shaft is arranged in the center of the top plate 132 in a penetrating manner, the rotating shaft is rotatably connected to the side wall of the second partition plate 128, two ends of the top plate 132 are respectively located in the left cavity 129 and the right cavity 130, the bottom end of the second push rod 131 passes through and is rotatably connected with a rotating rod 133, one side, close to the second push rod 131, of the top plate 132 is fixedly connected with a guide plate 134, the rotating rod 133 passes through and slides on the side wall of the guide plate 134, the rotating rod 133 is rotatably connected to the side wall of the guide plate 134, one end, close to the top plate 132, of the pressing plate 124 is provided with a pressing member for pressing the pressing plate 124, the pressing member is a roller 135, the roller 135 is rotatably connected to one end of the top plate 132, and the roller 135 is attached to the surface of the pressing plate 124.
As shown in fig. 4, 5 and 6, when pressure pulsation occurs in the liquid outlet pipe 3, the pressure change is transmitted to the second piston plate 122 through the second communicating pipe 121, the second piston plate 122 slides in the second communicating pipe 121, the second piston plate 122 moves to drive the second push rod 131 to synchronously slide in the second communicating pipe 121, the rotating rod 133 also moves along with the movement of the second push rod 131, the rotating rod 133 drives the top plate 132 to rotate around the rotating point of the rotating rod around the rotating point in the second communicating pipe 121, and along with the rotation of the top plate 132, the pressing member contacts with and applies pressure to the pressing plate 124 to push the pressing plate 124 to slide in the second communicating pipe 121 towards the direction of the air bag 123, so as to press the air bag 123, thereby reducing the difficulty of the pressing plate 124 to press the air bag 123.
As shown in fig. 4, 5 and 6, when the top plate 132 rotates, the roller shaft 135 is driven to rotate, the roller shaft 135 is attached to the surface of the extrusion plate 124 to roll, the rotational motion of the top plate 132 is converted into the linear motion of the extrusion plate 124, rolling friction is formed between the roller shaft 135 and the extrusion plate 124, vibration generated by friction is reduced, and meanwhile, the response speed is improved.
As shown in fig. 1 and 4, the roller 15 is rotatably connected to the inner wall of the left cavity 129, the second spring 16 and the pull rope 17 are further disposed in the left cavity 129, one end of the second spring 16 is fixedly disposed on the inner wall of the second communicating pipe 121, two ends of the pull rope 17 are fixedly disposed at one end of the top plate 132 and one end of the second spring 16 respectively, the pull rope 17 is attached to the side wall of the roller 15, and the roller 15 guides the pull rope 17.
As shown in fig. 1 and 4, when the piston plate 122 moves due to pressure pulsation of the liquid outlet pipe 3, the push rod 131 drives the top plate 132 to rotate around a pivot, the pull rope 17 at one end of the top plate 132 rotates along with the top plate 132 to be stretched, the spring 16 is stretched to store elastic potential energy, the roller 15 rotates to guide the movement direction of the pull rope 17, the force transmission path is ensured to be stable, the spring 16 applies reverse reset force to the top plate 132 through the pull rope 17, when the pressure pulsation is weakened, the spring 16 releases the elastic potential energy, the top plate 132 is driven to reversely rotate through the pull rope 17, the extrusion plate 124 resets under the rebound force of the air bag 123 to complete a buffering period, in addition, the spring 16 provides pretightening force to enable the top plate 132 to quickly reset after the pressure pulsation disappears, secondary vibration is avoided, and the spring 16 can convert part of pressure pulsation energy into elastic potential energy to reduce the energy consumption of the system.
As shown in fig. 1 and 4, the self-adaptive adjusting component 14 comprises a gas collecting box 141, a connecting pipe 142, a pushing rod III 143 and a connecting rod III 144, wherein the gas collecting box 141 is fixedly arranged on the outer side wall of the communicating pipe II 121, two ends of the connecting pipe 142 are respectively communicated with the inner cavity of the gas collecting box 141, one-way valves are respectively arranged on the side wall of the gas collecting box 141 and the connecting pipe 142, one-way valves are also arranged on the side wall of the gas collecting box 123, the inner wall of the gas collecting box 141 is in sliding connection with a piston plate III 145, one end of the pushing rod III 143 is penetrated in the horizontal direction and is in sliding sealing with the side wall of the communicating pipe II 121, the other end of the pushing rod III 143 is penetrated in the horizontal direction and is in sliding sealing with the side wall of the gas collecting box 141, one end of the pushing rod III 143 is fixedly connected with the piston plate III 145, and two ends of the connecting rod III 144 are respectively hinged with the pushing rod II 131 and the pushing rod III 143.
As shown in fig. 1 and 4, when the pressure pulsation of the liquid outlet pipe 3 increases, the piston plate two 122 slides in the communicating pipe two 121 and drives the push rod two 131 to move, the push rod two 131 drives the connecting rod three 144 to rotate, the connecting rod three 144 drives the push rod three 143 to move, the push rod three 143 drives the piston plate three 145 to slide in the air collecting box 141, air in the air collecting box 141 is pushed by the piston plate three 145 and is injected into the air bag 123 through the one-way valve on the connecting pipe 142, the air bag 123 increases in volume, when the pressure decreases, the air in the air bag 123 is exhausted outwards through the one-way valve, the air bag 123 decreases in volume until the air pressure in the air bag 123 is the same as the external atmospheric pressure, and therefore the real-time adjustment of the air bag 123 volume is convenient to realize.
As shown in fig. 1, a connecting plate 18 is fixedly connected to the bottom side wall of the pump body 1, a supporting plate 19 is arranged on one side, close to the base 4, of the connecting plate 18, the supporting plate 19 is abutted to the base 4, a plurality of springs three 20 are arranged between the connecting plate 18 and the supporting plate 19, the springs three 20 are vertically arranged, and two ends of the springs three 20 are respectively and fixedly connected to the connecting plate 18 and the opposite inner walls of the supporting plate 19.
As shown in fig. 1, when the diaphragm booster pump works, vibration is generated by the reciprocating motion of the diaphragm, the flow of liquid, the operation of mechanical parts and the like, and is transmitted to the connecting plate 18 connected with the diaphragm booster pump through the pump body 1, when the pump body 1 vibrates to enable the connecting plate 18 to move downwards or upwards, the spring III 20 is compressed or stretched, the spring III 20 stores elastic potential energy to slow down the descending or ascending speed of the connecting plate, and vibration energy is continuously absorbed and released through the compression and stretching process of the spring III 20, so that the vibration of the pump body 1 is buffered, and noise caused by the vibration of the pump body 1 is further reduced.
As shown in fig. 1 and 4, a sleeve 21 and a piston rod II 22 are arranged in a spring III 20, the sleeve 21 and the piston rod II 22 are vertically arranged, one end of the sleeve 21 is fixedly connected to the bottom of a connecting plate 18, one end of the piston rod II 22 is fixedly connected to the top of a supporting plate 19, the top end of the piston rod II 22 is slidingly connected to the inner wall of the sleeve 21, a channel is arranged in a connecting pipe 142, a liquid storage box 23 for storing damping liquid is fixedly arranged on the bottom side wall of a pump body 1, a communicating pipe III 24 is arranged between the liquid storage box 23 and the connecting plate 18, two ends of the communicating pipe III 24 are respectively communicated with the inner cavity of the liquid storage box 23 and the inner cavity of the channel in the connecting pipe 142, damping liquid is uniformly communicated in the sleeve 21, the channel and the communicating pipe III 24, a ball valve 25 is arranged on the communicating pipe III 24, and a third driving component 26 for driving a valve body rotating shaft in the ball valve 25 is arranged outside the pump body 1.
As shown in fig. 1 and 4, when the pump body 1 vibrates due to liquid pulsation, the vibration is transmitted to the sleeve 21 and the piston rod two 22 in the spring three 20 through the connecting plate 18, the sleeve 21 and the piston rod two 22 slide relatively due to the vibration, damping liquid in the sleeve 21 flows under the extrusion of the piston rod two 22, the damping liquid flows into the liquid storage box 23 through the channel and the communicating pipe three 24, viscous resistance is generated when the damping liquid flows in the channel, the third driving assembly 26 is triggered when the liquid pulsation vibrates, the third driving assembly 26 can drive the rotating shaft of the valve body of the ball valve 25 according to the vibration intensity so as to change the opening and closing degree of the ball valve 25, when the vibration is strong, the third driving assembly 26 reduces the opening and closing degree of the ball valve 25, so that the damping liquid flow resistance is increased, the flow speed is reduced, the damping effect is enhanced, the system rigidity is increased, high-frequency vibration is restrained, and when the vibration is weak, the opening and closing degree of the ball valve 25 is increased, the liquid flow is smooth, and the damping is reduced, and excessive damping is avoided.
As shown in fig. 1, fig. 4 and fig. 5, the third driving assembly 26 includes a fourth push rod 261, a second rack 262 and a second rotating rod 263, the fourth push rod 261 is vertically arranged, the top end of the fourth push rod 261 is arranged through the top plate 132 and fixedly connected to the bottom end of the second push rod 131, a second slide groove 264 for sliding the fourth push rod 261 is formed in the top plate 132 along the horizontal direction, the second rack 262 is vertically arranged at the outer side of the bottom of the second communicating pipe 121, the top end of the second rack 262 is fixedly connected to the bottom end of the fourth push rod 261, the second rotating rod 263 is horizontally arranged, a supporting rod 265 is fixedly connected to the outer side wall of the pump body 1, the second rotating rod 263 is arranged through and rotatably connected to the supporting rod 265, one end of the second rotating rod 263 is fixedly connected to a rotating shaft of the valve body in the ball valve 25, a second gear 266 is sleeved and fixed to the other end of the second rotating rod 263, and the second gear 266 is meshed with the second rack 262.
As shown in fig. 1,4 and 5, vibration generated when the diaphragm booster pump works can enable the piston plate two 122 and the push rod two 131 to slide in the communicating pipe two 121, movement of the push rod two 131 can synchronously drive the push rod four 261 to move, movement of the push rod four 261 can enable the rack two 262 to do linear movement along with the movement, when the rack two 262 does linear movement, the gear two 266 is driven to rotate, rotation of the gear two 266 can drive the rotary rod two 263 to rotate on the outer side wall of the pump body 1, rotation of the rotary rod two 263 can directly drive a rotating shaft of a valve body in the ball valve 25 to rotate, so that the opening and closing degree of the ball valve 25 is reduced when the vibration intensity of the pump body 1 is larger, the flow speed of damping liquid is reduced, and when the vibration intensity is reduced, the opening and closing degree of the ball valve 25 is increased, and the flow speed of the damping liquid is increased.
The embodiment of the application has the implementation principle that when liquid flows through the venturi tube 5 from an external input pipeline and enters a liquid suction cavity of the pump body 1, the venturi tube 5 buffers abrupt water pressure through a contraction section of a throat part of the venturi tube, when the water pressure abruptly rises, the throat pressure change of the venturi tube 5 drives the piston plate I7 to move, the piston plate I7 triggers the blade 9 to rotate through the first driving component 10, the blocking area of the blade 9 on the liquid is increased, so that the impact force of water flow on the pump body 1 and a pipeline system is reduced, meanwhile, the pressure pulsation buffer mechanism 12 on the liquid outlet pipe 3 further buffers pressure pulsation through the linkage of the piston plate II 122, the air bag 123 and the extrusion plate 124, stabilizes the liquid pressure, reduces the vibration and noise of the pump body 1, the base 4 further absorbs and releases vibration energy through the synergistic effect of the spring III 20 and damping liquid, the vibration damping effect is enhanced, the impact of the abrupt water pressure on the pump body 1 is effectively relieved through a multistage buffering and damping mechanism, the vibration and noise are reduced, and the running stability and service life of the pump body 1 are prolonged.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.
Claims (9)
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| CN202510464712.7A CN119982458B (en) | 2025-04-15 | 2025-04-15 | A diaphragm booster pump with a buffer noise reduction mechanism |
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| CN113153821A (en) * | 2021-04-28 | 2021-07-23 | 江苏大学 | Flow self-adaptation stator adjusting device based on hydraulic drive |
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| US6447243B1 (en) * | 2000-10-20 | 2002-09-10 | Ira F. Kittle | Buoyancy prime mover |
| EP2135538B1 (en) * | 2008-06-20 | 2011-10-26 | GOJO Industries, Inc. | Diaphragm foam pump |
| FR3001003B1 (en) * | 2013-01-17 | 2015-03-20 | Dosatron International | ASSAY DEVICE FOR INTRODUCING A LIQUID ADDITIVE IN A MAIN LIQUID CURRENT. |
| CN103196501B (en) * | 2013-03-25 | 2016-01-27 | 浙江欧莱科机电制造有限公司 | With the Venturi tube of safety valve |
| CN107504238B (en) * | 2017-07-31 | 2019-04-02 | 长江大学 | The adjustable machinery of critical flow is jammed venturi nozzle |
| CN107980324A (en) * | 2017-12-28 | 2018-05-04 | 王伟宏 | Venturi variable fertilizer applicator based on adjustable speed water pump |
| CN211255362U (en) * | 2019-08-07 | 2020-08-14 | 杭州九阳小家电有限公司 | Purifier that noise reduction effect is good |
| CN220791473U (en) * | 2023-08-23 | 2024-04-16 | 北京尤洁科技有限公司 | Hot water pump with silencing function |
| CN117889065A (en) * | 2024-01-31 | 2024-04-16 | 龙口利佳电气有限公司 | Take air damper diaphragm booster pump |
| CN118462651B (en) * | 2024-06-11 | 2024-11-08 | 中水淮河规划设计研究有限公司 | Flow self-adaptive guide vane adjusting device based on hydraulic transmission |
| CN118847403A (en) * | 2024-07-19 | 2024-10-29 | 艾肯（江苏）工业技术有限公司 | A high-speed steam atomization type temperature and pressure reducer |
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| CN113153821A (en) * | 2021-04-28 | 2021-07-23 | 江苏大学 | Flow self-adaptation stator adjusting device based on hydraulic drive |
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