CN119122797B - Air pump based on pressure feedback self-adjustment and pressure feedback self-adjustment method - Google Patents
Air pump based on pressure feedback self-adjustment and pressure feedback self-adjustment method Download PDFInfo
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- CN119122797B CN119122797B CN202411612123.0A CN202411612123A CN119122797B CN 119122797 B CN119122797 B CN 119122797B CN 202411612123 A CN202411612123 A CN 202411612123A CN 119122797 B CN119122797 B CN 119122797B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 90
- 238000004146 energy storage Methods 0.000 claims description 15
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims 1
- 238000005086 pumping Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/022—Stopping, starting, unloading or idling control by means of pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention relates to the technical field of air pumps, in particular to an air pump based on pressure feedback self-adjustment and a pressure feedback self-adjustment method, comprising an outer shell, wherein a pump cylinder body is arranged in the outer shell, a first inner cylinder and a second inner cylinder are arranged in the pump cylinder body, and the inner diameter of the first inner cylinder is larger than that of the second inner cylinder; the piston plate group is arranged in the pump cylinder body in a sealing sliding manner, the power assembly arranged in the outer shell body can drive the piston plate group to reciprocate in the first inner cylinder or the second inner cylinder, the pressure measuring structure is connected with an air supply pipe arranged on the pump cylinder body and is provided with a trigger part, the switching assembly is connected with the power assembly and the pump cylinder body, when the pressure in the air supply pipe reaches a preset value, the trigger part is matched with the switching assembly, the pump cylinder body can act relative to the power assembly, and the piston plate group can reciprocate in the second inner cylinder so as to automatically adjust the air charging speed, and the control precision in the air charging process is improved.
Description
Technical Field
The invention relates to the technology of an inflator pump, in particular to an air pump based on pressure feedback self-adjustment and a pressure feedback self-adjustment method.
Background
The air pump has the advantages of high efficiency, portability, stability, reliability and the like, and is widely applied to the fields of vehicles, industry, medical treatment and the like, and can compress air to generate air pressure through electric drive.
When using the air pump, the air pressure that can bear by the inflatable device needs to be considered, for example, when the tire of a vehicle is inflated, if the air charge quantity is too large, the tire pressure is too high, the running comfort of the vehicle is influenced, meanwhile, the risk of tire burst exists, and in the industrial field, the sealing performance of the device can be influenced when the inflatable device is oversupplied.
In order to cope with the problem, most of the prior air pumps are internally provided with pressure sensors, and the inflation speed is controlled by detecting the pressure, so that when the pressure in the equipment is about to reach a preset value, the minimum inflation speed is provided, a technician can conveniently and accurately shut down the air pump, the air pressure is ensured to be sufficient and excessive, however, the detection precision of the pressure sensors can be influenced by external factors, such as temperature and humidity, so that the detection result is error, the inflation speed of the air pump is influenced, and the symptoms of delay action are accompanied, so that under the state, the time for controlling the air pump to stop working is difficult to accurately grasp, the overcharge of the equipment is easy to be caused, and the stable operation of the equipment is influenced.
Disclosure of Invention
The invention aims to provide an air pump based on pressure feedback self-adjustment and a pressure feedback self-adjustment method, so as to solve the problems in the background art.
The air pump based on pressure feedback self-adjustment comprises an outer shell, a pump cylinder body, a piston plate group, a pressure measuring structure and a switching assembly, wherein the outer shell is internally provided with the pump cylinder body, a first inner cylinder and a second inner cylinder are arranged in the pump cylinder body, the inner diameter of the first inner cylinder is larger than that of the second inner cylinder, the piston plate group is arranged in the pump cylinder body in a sealing sliding mode, a power assembly arranged in the outer shell can drive the piston plate group to reciprocate in the first inner cylinder or the second inner cylinder, the pressure measuring structure is connected with an air supply pipe arranged on the pump cylinder body, a triggering part is arranged on the pressure measuring structure, the switching assembly is connected with the power assembly and the pump cylinder body, and when the pressure in the air supply pipe reaches a preset value, the triggering part is matched with the switching assembly, the pump cylinder body can act relative to the power assembly, and the piston plate group can reciprocate in the second inner cylinder.
The piston plate set further comprises a plurality of stagnation-containing chambers arranged in the pump cylinder body, a first spring is arranged in the stagnation-containing chambers, and the first spring is connected with the sealing plug.
As a still further proposal of the invention, an inner conical surface is formed on the inner wall of the sealing ring, an outer conical surface is formed on the outer wall of the sealing plug, and the inner conical surface is matched with the outer conical surface, so that the sealing ring can be driven to act when the sealing plug moves away from the power assembly.
The power assembly comprises a guide rod connected with the pump cylinder body, one end of the guide rod, which is far away from the pump cylinder body, is connected with a bracket, a driving device is fixedly arranged on the bracket, an output shaft of the driving device is connected with an eccentric wheel arranged on the bracket through a bevel gear set, a hinging rod is rotatably arranged at the eccentric position of the eccentric wheel, and the hinging rod is rotatably connected with the connecting rod.
The pressure measuring structure comprises a communicating cylinder body communicated with the air supply pipe, a follow-up sliding plug is arranged in the communicating cylinder body in a sealing sliding manner, a telescopic shaft penetrating through the communicating cylinder body is fixed on the follow-up sliding plug, the telescopic shaft and the triggering part are integrally formed, two inclined guide surfaces are symmetrically arranged on the triggering part, a second spring is sleeved on the telescopic shaft, one end of the second spring is connected with the follow-up sliding plug, and the other end of the second spring is connected with the inner wall of the communicating cylinder body.
The switching assembly comprises a guide plate and an energy storage structure, wherein the guide plate is arranged on the pump cylinder body, a bidirectional locking groove is formed in the guide plate, the energy storage structure is connected with the bracket through a connecting plate, a coaxial wheel set capable of rolling in the bidirectional locking groove is arranged on the energy storage structure, and when the triggering part is combined with the coaxial wheel set, the energy storage structure can move along the length direction of the bidirectional locking groove.
As a still further proposal of the invention, the bidirectional locking groove comprises two groups of inclined grooves symmetrically arranged on the guide plate, the head end and the tail end of the inclined groove are respectively connected with a first straight groove and a second straight groove, and the distance between the two groups of inclined grooves is gradually reduced along the head end and the tail end of the inclined groove.
The energy storage structure comprises a transverse shaft arranged on the guide plate, the transverse shaft is connected with the linkage plate, a sliding connection part is arranged at the end part of the transverse shaft and is in sliding connection with the guide plate, two sliding sleeves are symmetrically and slidably arranged on the transverse shaft, an operating shaft is fixed on the sliding sleeves, a grooved wheel and an abutting wheel are rotatably arranged on the operating shaft, the grooved wheel and the abutting wheel form the coaxial wheel set, a third spring is sleeved on the transverse shaft, one end of the third spring is connected with the end part of the transverse shaft, and the other end of the third spring is connected with the sliding sleeves.
The air pump pressure feedback self-adjusting method is applied to the air pump based on pressure feedback self-adjustment, and comprises the following steps:
step one, connecting an air supply pipe with equipment to be inflated through a pipeline;
starting a power assembly, wherein the power assembly drives the piston plate group to reciprocate in the first inner cylinder so as to pump air into equipment to be inflated;
Step three, along with the increase of the air pressure in the equipment to be inflated, the pressure measuring structure acts, the triggering part acts, and when the pressure in the equipment to be inflated reaches a preset value, the triggering part triggers the switching assembly to act;
when the switching component acts, the pump cylinder body is driven to move away from the power component so as to enable the piston plate group to move in the second inner cylinder, and the inflation speed is reduced;
and fifthly, when the air pressure of the equipment to be inflated reaches a preset value, controlling the power assembly to stop working.
Compared with the prior art, the pressure sensor has the beneficial effects that through the first inner cylinder, the second inner cylinder, the piston plate group and the power component, on one hand, the sealing plug and the sealing ring can be driven to reciprocate in the first inner cylinder in the reciprocating action process of the connecting rod, the pumping speed is higher at the moment, the air can be rapidly pumped into the equipment to be inflated in the initial stage of inflation, the inflation speed is accelerated, on the other hand, the sealing plug can be driven to reciprocate in the second inner cylinder, the pumping speed is slower at the moment, when the air pressure in the equipment to be inflated reaches a preset value, the time that the power component stops working can be accurately controlled, the phenomenon that the equipment to be inflated is prevented from being overcharged is avoided, on the one hand, the bracket can keep better stability under the two pumping speeds, the bracket is prevented from being displaced in the process of forming negative pressure in the reverse motion of the sealing plug and the sealing ring, the stable operation of the pumping is guaranteed, on the other hand, the grooved pulley and the grooved pulley can be matched with the inclined groove, the position of the connecting plate can be switched to realize the further control of the time that the equipment to be overcharged due to the fact that the pressure of the equipment to be controlled by the pressure is further controlled at the preset value.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a pressure feedback self-regulating based air pump;
FIG. 2 is a schematic view of the structure within the outer housing of one embodiment of the air pump based on pressure feedback self-regulation;
FIG. 3 is a schematic view of another angle within the outer housing in one embodiment of the pressure feedback self-regulating air pump;
FIG. 4 is a schematic diagram of the power assembly and pump cylinder block of one embodiment of a self-regulating air pump based on pressure feedback;
FIG. 5 is a partial cross-sectional view of the pump cylinder block in one embodiment of the self-regulating air pump based on pressure feedback;
FIG. 6 is an exploded view of the seal plug and seal ring in one embodiment of the pressure feedback self-regulating air pump;
FIG. 7 is a schematic diagram of the structure of the pressure measurement structure in one embodiment of the air pump based on pressure feedback self-adjustment;
FIG. 8 is a schematic diagram of the switching assembly in one embodiment of the air pump based on pressure feedback self-regulation;
FIG. 9 is an exploded view of the switching assembly in one embodiment of the air pump based on pressure feedback self-regulation.
1, Outer casing, 2, operating cover plate, 3, pump cylinder block, 301, hysteresis chamber, 302, first inner cylinder, 303, second inner cylinder, 4, first spring, 5, sealing ring, 501, inner conical surface, 6, sealing plug, 601, outer conical surface, 7, connecting rod, 8, guiding wheel, 9, hinging rod, 10, eccentric wheel, 11, first bevel gear, 12, second bevel gear, 13, bracket, 14, driving device, 15, guiding rod, 16, one-way valve, 17, communicating cylinder, 18, follow-up sliding plug, 19, telescopic shaft, 20, second spring, 21, triggering part, 2101, inclined guiding surface, 22, guiding plate, 2201, first straight slot, 2202, inclined slot, 2203, second straight slot, 23, operating shaft, 24, abutting wheel, 25, grooved pulley, 26, sliding sleeve, 27, third spring, 28, transverse shaft, 2801, sliding connecting part, 29, and connecting plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 9, in an embodiment of the present invention, an air pump based on pressure feedback self-adjustment includes: the shell body 1, the piston plate group, the pressure measurement structure and the switching component, make in the in-process of connecting rod 7 reciprocating motion, on the one hand can order about sealing plug 6 and sealing ring 5 reciprocating motion in first inner cylinder 302, the pumping speed is faster this moment, and make in the initial stage of aerifing can be quick pump gas into to waiting to aerify equipment, accelerate the inflation speed, on the other hand, can order about sealing plug 6 reciprocating motion in second inner cylinder 303, pumping speed is slower this moment, and when making in waiting to aerify equipment atmospheric pressure reach the default, the opportunity that control power component stop work that can be more accurate, avoid waiting to aerify equipment to appear the phenomenon of overcharging, prevent to overcharging and lead to waiting to aerify equipment gas tightness to suffer destruction, specifically as follows: the pump cylinder body 3 is arranged in the outer shell 1, a first inner cylinder 302 and a second inner cylinder 303 are arranged in the pump cylinder body 3, the inner diameter of the first inner cylinder 302 is larger than that of the second inner cylinder 303, two one-way valves 16 are also arranged on the pump cylinder body 3, the conduction directions of the two one-way valves 16 are opposite, specifically, the conduction direction of one-way valve 16 is from outside to inside the pump cylinder body 3, the conduction direction of the other one-way valve 16 is from inside to outside of the pump cylinder body 3, when the piston plate group reciprocates, when negative pressure is generated in the pump cylinder body 3, one-way valve 16 can pump outside air into the pump cylinder body 3, when positive pressure is generated in the pump cylinder body 3, the other one-way valve 16 can pump air into equipment to be inflated, on one hand, the one-way communication of gas can be realized, and the inflation action is executed, on the other hand, the backflow of air filled in the equipment to be inflated can be prevented, and the inflation speed is improved.
The piston plate group is arranged in the pump cylinder body 3 in a sealing and sliding manner, a power assembly arranged in the outer shell 1 can drive the piston plate group to reciprocate in the first inner cylinder 302 or the second inner cylinder 303, the piston plate group comprises a sealing ring 5 and a sealing plug 6 which are coaxially arranged, specifically, the sealing ring 5 can hermetically slide in the first inner cylinder 302, the sealing plug 6 can hermetically slide in the second inner cylinder 303, an inner conical surface 501 is formed on the inner wall of the sealing ring 5, an outer conical surface 601 is formed on the outer wall of the sealing plug 6, the inner conical surface 501 is matched with the outer conical surface 601 and can drive the sealing ring 5 to reciprocate when the sealing plug 6 moves away from the power assembly, the sealing rod 7 is connected with the power assembly, two groups of wheels 8 which are symmetrically arranged on the outer part of the pump cylinder body 3 in a rolling manner with the sealing ring 7 are arranged, the sealing ring 8 can prevent the power assembly from hermetically sliding in the second inner cylinder 303, the piston assembly from inclining and moving, the sealing ring 5 is prevented from sliding down between the inner wall of the sealing ring 6 and the sealing cylinder body 6 due to the sealing rod 7, the sealing ring 5 is further arranged in the sealing ring 6, the sealing ring 6 is prevented from sliding down between the sealing ring 6 and the sealing ring 5 due to the sealing ring 6, and the sealing ring 5 is additionally arranged in the sealing and the sealing ring body 3, and the sealing plug 6 is prevented from sliding between the sealing ring 6 and the sealing ring 6 due to the inner cylinder body, and the sealing ring 3, and the sealing plate is provided with a cavity clearance between the sealing ring is provided, the first spring 4 is connected to the sealing plug 6.
In the embodiment, in the initial state, the sealing ring 5 is abutted against the inner top wall of the first inner cylinder 302 under the pulling of the first spring 4, and the stroke amount of the reciprocating motion of the connecting rod 7 driven by the power component is constant, so that the reciprocating motion stroke amount of the sealing plug 6 connected with the connecting rod 7 is constant, meanwhile, the sealing plug 6 has two position states, namely, one side of the sealing plug 6 facing the connecting rod 7 is coplanar with the inner top wall of the first inner cylinder 302, at the moment, the outer conical surface 601 on the sealing plug 6 is in a fit state with the inner conical surface 501 on the sealing ring 5, when the connecting rod 7 drives the sealing plug 6 to move away from the power component, the sealing plug 6 can drive the sealing ring 5 to move away from the inner top wall of the first inner cylinder 302, the first spring 4 can compress air in the pump cylinder body 3 while being stretched, and perform the inflation motion, and conversely, when the sealing plug 6 moves reversely, the first spring 4 can release elastic potential energy, so that the sealing plug 5 can follow the sealing plug 6 to move reversely, and the external air into the pump cylinder body 3, and the inflation device can be inflated into the inflation device at the inflation stage, and the inflation device can be inflated quickly, at the inflation stage and the inflation device can be inflated quickly.
Secondly, one side of the sealing plug 6 facing the connecting rod 7 is attached to the inner top wall of the second inner cylinder 303, at this time, when the connecting rod 7 drives the sealing plug 6 to move away from the power assembly, the sealing plug 6 can compress air in the pump cylinder body 3 to execute compression, but in this state, the speed of gas pumped into the equipment to be inflated is slower because the inner diameter of the second inner cylinder 303 is smaller than that of the first inner cylinder 302, and at this time, when the air pressure in the equipment to be inflated reaches a preset value, the time when the power assembly stops working can be controlled more accurately.
The lengths of the first inner cylinder 302 and the second inner cylinder 303 are larger than the stroke amount of the power assembly for driving the connecting rod 7 to reciprocate.
Through the above-mentioned setting for at the in-process of connecting rod 7 reciprocating motion, can order about sealing plug 6 and sealing ring 5 in first inner cylinder 302 reciprocating motion on the one hand, pumping speed is faster this moment, and make at the initial stage of aerifing can be quick pump gas into to waiting to aerify equipment, accelerate the inflation speed, on the other hand, can order about sealing plug 6 reciprocating motion in second inner cylinder 303, pumping speed is slower this moment, and when making in waiting to aerify equipment atmospheric pressure reach the default, the opportunity that control power component stop work that can be more accurate, avoid waiting to aerify equipment to appear the phenomenon of overcharging, prevent that overcharging from leading to waiting to aerify equipment to suffer the gas tightness and destroy.
Referring to fig. 2-4, the power assembly includes a guide rod 15 connected to the pump cylinder block 3, one end of the guide rod 15 away from the pump cylinder block 3 is connected to a bracket 13, a driving device 14 is fixedly installed on the bracket 13, an output shaft of the driving device 14 is connected to an eccentric wheel 10 disposed on the bracket 13 through a bevel gear set, a hinge rod 9 is rotatably installed at an eccentric position of the eccentric wheel 10, and the hinge rod 9 is rotatably connected to the connecting rod 7, wherein the bevel gear set includes a first bevel gear 11 rotatably installed on the bracket 13 and a second bevel gear 12 connected to an output shaft of the driving device 14, the first bevel gear 11 is meshed with the second bevel gear 12, and a circumferential radius of the second bevel gear 12 is smaller than a circumferential radius of the first bevel gear 11.
In the process of inflation, the driving device 14 can drive the second bevel gear 12 to rotate, so that the first bevel gear 11 meshed with the second bevel gear 12 rotates, at the moment, the eccentric wheel 10 performs circular motion, and the hinge rod 9 drives the connecting rod 7 to reciprocate along the length direction of the connecting rod 7, so that the sealing plug 6 acts, wherein the circumferential radius of the second bevel gear 12 is smaller than that of the first bevel gear 11, the effect of reducing torque is achieved, the output torque of the driving device 14 is smaller, and the durability of the driving device 14 is improved.
Referring to fig. 2-3 and 7, the pressure measuring structure is connected with an air supply pipe arranged on the pump cylinder body 3, a trigger part 21 is arranged on the pressure measuring structure, the pressure measuring structure comprises a communication cylinder body 17 communicated with the air supply pipe, a pressure gauge is arranged on the communication cylinder body 17, a follow-up sliding plug 18 is arranged in the communication cylinder body 17 in a sealing sliding manner, a telescopic shaft 19 penetrating through the communication cylinder body 17 is fixed on the follow-up sliding plug 18, the telescopic shaft 19 and the trigger part 21 are integrally formed, two inclined guide surfaces 2101 are symmetrically arranged on the trigger part 21, a second spring 20 is sleeved on the telescopic shaft 19, one end of the second spring 20 is connected with the follow-up sliding plug 18, and the other end of the second spring 20 is connected with the inner wall of the communication cylinder body 17.
In the initial state, the second spring 20 is in a compressed state, at this time, the follower slide plug 18 is in contact with one side wall of the communicating cylinder 17, meanwhile, the side wall is communicated with the air supply pipe through the conduit, and as the inflation is carried out in the equipment to be inflated, the pressure in the air supply pipe is gradually increased (the air supply pipe is communicated with the equipment to be inflated, and the internal pressure of the air supply pipe is consistent with the internal pressure of the air supply pipe), under the action of the pressure, the follower slide plug 18 acts, the second spring 20 is compressed, the trigger part 21 acts towards the switching assembly, and when the pressure in the equipment to be inflated reaches a preset value, the trigger part 21 triggers the action of the switching assembly, so that the position of the sealing plug 6 is changed, the air can be inflated at a smaller inflation speed when the sealing plug 6 acts, and based on this, the quick switching of the inflation speed of the equipment to be inflated can be prevented.
The above measured value indicates a critical value of switching the inflation speed, and when the pressure in the device to be inflated reaches the measured value, the trigger unit 21 can cooperate with the switching unit to perform switching of the inflation speed, and the above preset value indicates a value of the internal pressure of the device to be inflated after inflation is completed, and after the value is reached, the driving device 14 should be controlled to stop operation immediately to prevent overcharging.
Referring to fig. 2-3 and 7-9, the switching assembly is connected to the power assembly and the pump cylinder block 3, and when the pressure in the air supply pipe reaches a predetermined value, the triggering portion 21 cooperates with the switching assembly to enable the pump cylinder block 3 to act relative to the power assembly so as to enable the piston plate group to reciprocate in the second inner cylinder 303, and the switching assembly includes a guide plate 22 and an energy storage structure.
The guide plate 22 is mounted on the pump cylinder block 3, a bidirectional locking groove is formed in the guide plate 22, the bidirectional locking groove comprises two groups of inclined grooves 2202 symmetrically formed in the guide plate 22, a first straight groove 2201 and a second straight groove 2203 are respectively connected to the head end and the tail end of each inclined groove 2202, the distance between the two groups of inclined grooves 2202 is gradually reduced along the head end and the tail end of each inclined groove 2202, when an energy storage structure is clamped with the first straight groove 2201 and the second straight groove 2203, stability of the support 13 can be guaranteed, and in the process of action of the sealing plug 6 and the sealing ring 5, the problem that negative pressure action causes position change of the support 13 to reduce pump air volume is avoided.
The energy storage structure is connected with the bracket 13 through a linkage plate 29, a coaxial wheel set capable of rolling in the bidirectional locking groove is arranged on the energy storage structure, when the trigger part 21 is assembled with the coaxial wheel set, the energy storage structure can move along the length direction of the bidirectional locking groove, the energy storage structure comprises a transverse shaft 28 arranged on the guide plate 22, the transverse shaft 28 is connected with the linkage plate 29, a sliding connecting part 2801 is arranged at the end part of the transverse shaft 28, the sliding connecting part 2801 is in sliding connection with the guide plate 22, two sliding sleeves 26 are symmetrically and slidably arranged on the transverse shaft 28, an operating shaft 23 is fixed on the sliding sleeves 26, a grooved wheel 25 and an abutting wheel 24 are rotatably arranged on the operating shaft 23, the grooved wheel 25 and the abutting wheel 24 form the coaxial wheel set, a third spring 27 is sleeved on the transverse shaft 28, one end of the third spring 27 is connected with the end part of the transverse shaft 28, and the other end of the third spring 27 is connected with the sliding sleeve 26.
In the initial state, the third spring 27 is in a compressed state, the grooved pulley 25 is positioned at one end of the first straight groove 2201 far away from the inclined groove 2202, at the moment, the grooved pulley 25 is matched with the first straight groove 2201, so that the position locking of the bracket 13 can be realized, when the sealing plug 6 reciprocates, the sealing plug 6 and the sealing ring 5 reciprocate in the first inner cylinder 302 to operate at the maximum pumping speed, when the pressure in the equipment to be inflated reaches a preset value, the triggering part 21 is abutted against the abutting pulley 24, and the abutting pulley 24 is matched with the inclined guide surface 2101 along with the action of the triggering part 21, so that the abutting pulley 24 drives the grooved pulley 25 to move towards the head end of the inclined groove 2202 along the length direction of the first straight groove 2201 until the grooved pulley 25 moves to the head end of the inclined groove 2202, since the distance between the two sets of inclined grooves 2202 is gradually reduced along the head-to-tail direction of the inclined grooves 2202, the third spring 27 can release elastic potential energy and move along the inclined grooves 2202, at this time, the cross shaft 28 can move along the length direction of the guide plate 22 under the guidance of the sliding connection part 2801, meanwhile, the cross shaft 28 drives the bracket 13 to move away from the pump cylinder body 3 through the connecting plate 29, when the grooved pulley 25 moves to the tail end of the inclined groove 2202, the grooved pulley 25 enters the second flat groove 2203, and under the cooperation of the grooved pulley 25 and the second flat groove 2203, locking of the bracket 13 is realized again, at this time, when the connecting rod 7 drives the sealing plug 6 to reciprocate, the sealing plug 6 can reciprocate only in the second inner cylinder 303 and operates at the minimum pumping speed.
Through above-mentioned setting, on the one hand make under two kinds of pumping speeds, support 13 can keep better stability, avoid in sealing plug 6, sealing ring 5 reverse motion form the in-process of negative pressure, support 13 takes place the displacement, and reduced the pump capacity, guarantee the steady going on of pumping, on the other hand, through the cooperation of sheave 25 with inclined groove 2202, can order about support 13 through yoke plate 29 and take place the position switch, thereby realize the switching of two kinds of pumping speeds, further prevent when waiting to aerify the interior pressure of equipment and reach the default, because the opportunity of controlling drive arrangement 14 stop work makes mistakes and leads to the equipment to be overcharged.
It is added that the outer casing 1 is slidably provided with the operation cover plate 2, after the inflation is completed, the operation cover plate 2 is opened to drive the two groups of operation shafts 23 to move reversely, so that the reset of the bracket 13 can be realized, and the steps can be repeated conveniently when the inflation is performed next time.
As an embodiment of the present invention, there is also provided a pressure feedback self-adjusting method for an air pump, applied to the pressure feedback self-adjusting based air pump, including the steps of:
step one, connecting an air supply pipe with equipment to be inflated through a pipeline;
Starting a power assembly, wherein the power assembly drives the piston plate group to reciprocate in the first inner cylinder 302 so as to pump air into equipment to be inflated;
Step three, as the air pressure in the equipment to be inflated increases, the pressure measuring structure acts, the triggering part 21 acts, and when the pressure in the equipment to be inflated reaches a preset value, the triggering part 21 triggers the switching assembly to act;
Step four, when the switching component acts, the pump cylinder body 3 is driven to move away from the power component so as to enable the piston plate group to move in the second inner cylinder 303, and the inflation speed is reduced;
and fifthly, when the air pressure of the equipment to be inflated reaches a preset value, controlling the power assembly to stop working.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
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