CN118462528A - A metering pump with adjustable range - Google Patents

Abstract

The present invention discloses a metering pump with adjustable range, and relates to the technical field of metering pumps. The metering pump with adjustable range comprises a transmission body, wherein a worm is arranged on the inner wall at the top of the transmission body, wherein the outer wall of the worm is meshed with a worm wheel, wherein the worm wheel is fixedly mounted on the outer wall of a rotating rod, and one end of the rotating rod is rotatably connected with the inner wall of the transmission body, and an eccentric wheel is fixedly mounted on the end of the rotating rod away from the inner wall of the transmission body. The metering pump with adjustable range controls the amount of feed liquid by controlling the switch size of the range regulating valve through the cooperation of a sensing device and a range regulating valve, thereby achieving the effect of controlling the range of the metering pump; through the cooperation of a sensing device and a thermostatic device, the feed liquid is heated when the temperature is too low, to prevent the temperature from being too low and the feed liquid from freezing, thereby ensuring the smooth transportation of the feed liquid and the safety of the metering pump itself.

Description

A metering pump with adjustable range

Technical Field

The invention relates to the technical field of metering pumps, in particular to a metering pump with adjustable range.

Background Art

A pump is a basic tool for liquid transportation, and it can easily transport liquids. A metering pump is a pump that is used to measure liquids during transportation. It can measure liquids during transportation and is the most commonly used tool in the liquid transportation industry.

The utility model patent with patent announcement number CN214464712U discloses a metering pump head and a metering pump, which relates to the technical field of metering pumps, specifically a metering pump head and a metering pump, wherein the metering pump head comprises a pump head body, a plunger cavity arranged in the pump head body, and further comprises: an inlet valve group installation part, which is configured as a flow passage penetrating through one side of the pump head body with a gradient aperture, and is used to install the inlet valve group; a plunger part installed in the plunger cavity, wherein one end of the plunger part away from the flow passage is connected to the driving end of the metering pump and is driven by it; a metering pump inlet and a metering pump outlet are provided on the pump head body, the flow passage is connected to the metering pump inlet and the plunger cavity respectively, and the plunger cavity is also connected to the metering pump outlet; the beneficial effects of the utility model are: by changing the installation position of the inlet valve group, when installing and replacing the inlet valve group, the inlet check valve can be quickly taken out from it without disassembling the inlet and outlet valves and pipelines; the existing safety hazards are eliminated, and waste is reduced; and it is easy to transport.

However, the current metering pumps have the following problems: when the metering pump is used to transport liquids, the required metering pump range is different according to different situations. At the same time, if the weather is too cold during liquid transportation, the transported liquid may freeze in the metering pump, affecting the transportation of the liquid. In severe cases, it may even damage the metering pump. Therefore, we propose a metering pump with adjustable range.

Summary of the invention

1. Technical issues to be solved

In view of the deficiencies of the prior art, the present invention provides a metering pump with adjustable range, which solves the problems raised in the above background technology.

(II) Technical solution

To achieve the above objectives, the present invention is implemented through the following technical solutions: a metering pump with adjustable range, comprising a transmission body, a worm is provided on the top inner wall of the transmission body, the outer wall of the worm is meshed with a worm wheel, the worm wheel is fixedly mounted on the outer wall of a rotating rod, and one end of the rotating rod is rotatably connected to the inner wall of the transmission body, an eccentric wheel is fixedly mounted on the end of the rotating rod away from the inner wall of the transmission body, the outer wall of the eccentric wheel is rotatably connected to a sliding piston, a pump head is fixedly mounted below the transmission body, a diaphragm is fixedly mounted above the pump head, one-way inlet and outlet valves are fixedly mounted on both sides of the pump head, a constant temperature range adjustment device is provided on the outer wall of the valve on the left side of the one-way inlet and outlet valve, the constant temperature range adjustment device comprises a sensing device and a small bracket, a range adjustment valve is provided on the inner wall of the sensing device, a constant temperature device is fixedly connected to the left outer wall of the sensing device, the small bracket is fixedly mounted on the inner wall of the pipeline of the valve on the left side of the one-way inlet and outlet valve, and a fan is rotatably mounted on the right outer wall of the small bracket.

Preferably, a leakage outlet is provided on the right outer wall of the bottom of the transmission body, and the bottom of the leakage outlet is parallel to the upper surface of the diaphragm, and the interior of the leakage collection box is connected to the leakage outlet.

Preferably, the thermostatic device is in the form of an annular pipe spirally distributed on the outer wall of the valve pipe of the feed inlet on the left side of the one-way inlet and outlet valves.

Preferably, a diaphragm decompression buffer device is provided at the lower half of the transmission body, and the diaphragm decompression buffer device includes a large bracket and a straight rod. The large bracket is fixedly installed on the inner wall of the lower half of the transmission body, and a buffer head is movably connected to the lower middle part of the large bracket. The outer wall around the buffer head is rotatably connected with a decompression drainage plate, one end of the straight rod is fixedly connected to the outer wall of the bottom of the rotating rod, and a push plate is fixedly installed on the outer wall of the end of the straight rod away from the rotating rod.

Preferably, the decompression and liquid discharge plate is located on the movement track of the push plate.

Preferably, the buffer head is connected to the large bracket by a spring.

Preferably, a liquid leakage warning device is provided on the right side outer wall of the transmission body, and the liquid leakage warning device includes a liquid leakage collecting box, which is fixedly mounted on the right side outer wall of the transmission body, and the top of the liquid leakage collecting box is fixedly connected to one end of an operating rod, and the other end of the operating rod is fixedly connected to the right side outer wall of the transmission body, and the end of the operating rod away from the liquid leakage collection box is fixedly connected to one end of an electric telescopic rod, and the electric telescopic rod passes through the right side inner wall of the transmission body, and the other end of the electric telescopic rod is fixedly connected to the right side outer wall of a U-shaped pallet, and the bottom of the U-shaped pallet is slidably mounted on the upper outer wall of the limiting block, and the right side outer wall of the limiting block is fixedly mounted on the right side inner wall of the transmission body.

Preferably, the limiting blocks are arranged on the left and right sides of the transmission body, and the movement trajectory of the sliding piston is limited between the two limiting blocks.

(III) Beneficial effects

The present invention provides a metering pump with adjustable range, which has the following beneficial effects:

(1) The metering pump with adjustable range controls the amount of feed liquid by controlling the switch size of the range regulating valve through the cooperation of the sensing device and the range regulating valve, thereby achieving the effect of controlling the range of the metering pump; the feed liquid is heated by the cooperation of the sensing device and the constant temperature device when the temperature is too low to prevent the feed liquid from freezing due to the low temperature, thereby ensuring the smooth transportation of the feed liquid and the safety of the metering pump itself; the fan is driven to rotate by the impact force of the feed liquid to stir the feed liquid, thereby improving the heating effect of the constant temperature device.

(2) The metering pump with adjustable range can rotate the pressure relief plate to evenly distribute the pressure generated when the diaphragm moves upward through the cooperation of the rotating rod, the straight rod, the push plate and the pressure relief plate, thereby preventing the diaphragm from being damaged due to uneven force. The buffer head can cooperate with the large bracket, so that when the diaphragm moves upward, the spring between the buffer head and the large bracket is stressed to buffer the diaphragm, thereby preventing the diaphragm from being damaged due to excessive pressure.

(3) The metering pump with adjustable range can discharge the leaked liquid from the leakage outlet on the right side of the bottom of the transmission body as soon as possible through the cooperation of the rotating rod, the straight rod, the push plate and the pressure relief discharge plate, so as to prevent the leaked liquid from further damaging the diaphragm; through the movement of the leakage collection box, the operating rod and the electric telescopic rod, in cooperation with the U-shaped card plate, the U-shaped card plates on both sides are closed to control the sliding piston, so that the sliding piston is kept in a downward state, ensuring the cleanliness of the inside of the pump head and making it less troublesome for technicians to replace the diaphragm. The external motor above the transmission body will automatically stop when it cannot run, so that the entire machine stops running and reduces material loss; the movement trajectory of the sliding piston can be fixed by the limiting block, and no tilting or offset will occur, thereby improving the safety and stability of the machine.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the main body of the present invention;

FIG2 is a front cross-sectional structural schematic diagram of the present invention;

FIG3 is a schematic cross-sectional view of the rear surface of the present invention;

FIG4 is a schematic diagram of a partial cross-sectional structure of the present invention;

FIG5 is a schematic cross-sectional view of the constant temperature range adjustment device of the present invention;

FIG6 is a schematic cross-sectional view of the diaphragm pressure reducing buffer device of the present invention;

FIG. 7 is a schematic diagram of the cross-sectional structure of the liquid leakage warning device of the present invention.

In the figure: 1. transmission body; 2. worm; 3. worm wheel; 4. rotating rod; 5. eccentric wheel; 6. sliding piston; 7. pump head; 8. diaphragm; 9. one-way inlet and outlet valves; 10. constant temperature range adjustment device; 101. induction device; 102. range adjustment valve; 103. constant temperature device; 104. small bracket; 105. fan; 11. diaphragm pressure relief buffer device; 111. large bracket; 112. buffer head; 113. pressure relief drain plate; 114. straight rod; 115. push plate; 12. leakage warning device; 121. leakage collection box; 122. operating lever; 123. electric telescopic rod; 124. U-shaped card plate; 125. limiting block.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1-7. The present invention provides a technical solution: a metering pump with adjustable range, including a transmission body 1, a worm 2 is arranged on the inner wall at the top of the transmission body 1, the outer wall of the worm 2 is meshed with a worm wheel 3, the worm wheel 3 is fixedly mounted on the outer wall of a rotating rod 4, and one end of the rotating rod 4 is rotatably connected to the inner wall of the transmission body 1, an eccentric wheel 5 is fixedly mounted on the end of the rotating rod 4 away from the inner wall of the transmission body 1, the outer wall of the eccentric wheel 5 is rotatably connected to a sliding piston 6, a pump head 7 is fixedly mounted below the transmission body 1, a diaphragm 8 is fixedly mounted above the pump head 7, a leakage outlet is opened on the outer wall on the right side of the bottom of the transmission body 1, and the bottom of the leakage outlet is parallel to the upper surface of the diaphragm 8. When the diaphragm 8 is broken, the leakage enters the upper part of the diaphragm 8, and the leakage parallel to the upper surface of the diaphragm 8 is discharged. The leaked liquid can be discharged through the discharge port. One-way inlet and outlet valves 9 are fixedly installed on both sides of the pump head 7. A constant temperature range adjustment device 10 is arranged on the outer wall of the feed inlet valve on the left side of the one-way inlet and outlet valve 9. The constant temperature range adjustment device 10 comprises a sensing device 101 and a small bracket 104. A range adjustment valve 102 is arranged on the inner wall of the sensing device 101. A constant temperature device 103 is fixedly connected to the left outer wall of the sensing device 101. The constant temperature device 103 is in the form of an annular pipeline spirally distributed on the outer wall of the feed inlet valve pipeline on the left side of the one-way inlet and outlet valve 9. The heating effect is better and the heating effect of the feed liquid is more uniform. The small bracket 104 is fixedly installed on the inner wall of the pipeline of the feed inlet valve on the left side of the one-way inlet and outlet valve 9. A fan 105 is rotatably installed on the right outer wall of the small bracket 104.

The lower part of the transmission body 1 is provided with a diaphragm decompression buffer device 11, which includes a large bracket 111 and a straight rod 114. The large bracket 111 is fixedly mounted on the inner wall of the lower part of the transmission body 1, and a buffer head 112 is movably connected to the lower middle part of the large bracket 111. The buffer head 112 and the large bracket 111 are connected by a spring. When the diaphragm 8 is agitated upward, the spring between the buffer head 112 and the large bracket 111 is stressed, which buffers the diaphragm 8 to prevent the diaphragm 8 from being over-pressured. Damage, the outer wall around the buffer head 112 is rotatably connected with a decompression drainage plate 113, one end of the straight rod 114 is fixedly connected to the outer wall of the bottom of the rotating rod 4, and the outer wall of the end of the straight rod 114 away from the rotating rod 4 is fixedly installed with a push plate 115, and the decompression drainage plate 113 is located on the movement trajectory of the push plate 115. When the push plate 115 moves, it can push the decompression drainage plate 113, so that the decompression drainage plate 113 can evenly separate the pressure generated when the diaphragm 8 is pushed upward during rotation, thereby preventing the diaphragm 8 from being damaged due to uneven force.

The right outer wall of the transmission body 1 is provided with a liquid leakage warning device 12, which includes a liquid leakage collecting box 121, which is fixedly mounted on the right outer wall of the transmission body 1, and the upper part of the liquid leakage collecting box 121 is fixedly connected to one end of an operating rod 122, and the other end of the operating rod 122 is fixedly connected to the right outer wall of the transmission body 1, and the end of the operating rod 122 away from the liquid leakage collecting box 121 is fixedly connected to one end of an electric telescopic rod 123, and the electric telescopic rod 123 runs through the right inner wall of the transmission body 1, and the electric telescopic rod 123 passes through the right inner wall of the transmission body 1. The other end of the rod 123 is fixedly connected to the right outer wall of the U-shaped card plate 124. The bottom of the U-shaped card plate 124 is slidably installed on the outer wall above the limiting block 125, and the right outer wall of the limiting block 125 is fixedly installed on the right inner wall of the transmission body 1. The limiting blocks 125 are arranged on the left and right sides inside the transmission body 1. The movement trajectory of the sliding piston 6 is limited between the two limiting blocks 125. The limiting blocks 125 can fix the movement trajectory of the sliding piston 6 without causing tilting, offset and the like, thereby improving the safety and stability of the machine.

When in use, the external motor above the transmission body 1 starts to operate, the external motor drives the worm 2 to rotate, the worm 2 drives the worm wheel 3 to rotate, the worm wheel 3 drives the rotating rod 4 to rotate, the rotating rod 4 drives the eccentric wheel 5 to rotate, the eccentric wheel 5 drives the sliding piston 6 to perform a reciprocating piston movement up and down, when the sliding piston 6 performs a reciprocating piston movement up and down, the sliding piston 6 drives the diaphragm 8 to agitate up and down, when the diaphragm 8 agitates upward, the small balls in the one-way inlet and outlet valves 9 on both sides of the pump head 7 move toward the direction of the pump head 7, the small balls move to the card slot where the one-way inlet and outlet valves 9 are connected to the pump head 7, the feed valve on the left side of the one-way inlet and outlet valve 9 starts to enter the liquid, and the liquid After entering the pump head 7, when the diaphragm 8 is agitated downward, the ball in the one-way inlet and outlet valve 9 moves away from the pump head 7, and the ball moves to the sealing groove on the side of the one-way inlet and outlet valve 9 away from the pump head 7. The feed valve on the left side of the one-way inlet and outlet valve 9 is blocked, and the feeding stops. The liquid in the pump head 7 quickly flows to the discharge valve on the right side of the one-way inlet and outlet valve 9 under the downward squeezing pressure of the diaphragm 8, and the liquid is discharged from the discharge valve on the right side of the one-way inlet and outlet valve 9. At the same time, the ball in the discharge valve on the right side of the one-way inlet and outlet valve 9 also moves away from the pump head 7, and the ball moves to the sealing groove, blocking the discharge valve on the right side of the one-way inlet and outlet valve 9.

When feeding through the feed valve on the left side of the one-way inlet and outlet valve 9, the thermostatic range adjustment device 10 on the feed valve on the left side of the one-way inlet and outlet valve 9 is also in operation. When the range of the metering pump needs to be adjusted, the range adjustment valve 102 set inside the feed valve on the left side of the one-way inlet and outlet valve 9 can be adjusted by the sensing device 101. The amount of feed liquid can be controlled by controlling the switch size of the range adjustment valve 102, thereby achieving the effect of controlling the range of the metering pump. The sensing device 101 can also monitor the temperature of the feed liquid. When the sensing device 101 is When the feed liquid temperature is monitored to be too low, the thermostat 103 distributed on the outer wall of the feed valve on the left side of the one-way inlet and outlet valve 9 starts to work, and the thermostat 103 starts to heat up to heat the feed liquid to prevent the temperature from being too low and the feed liquid from freezing, thereby ensuring the smooth transportation of the feed liquid and the safety of the metering pump itself. When the feed liquid is fed, the fan 105 in the feed valve on the left side of the one-way inlet and outlet valve 9 is driven to rotate by the impact force of the feed liquid, and the fan 105 stirs the feed liquid when rotating, thereby improving the heating effect of the thermostat 103.

When the diaphragm 8 is agitated up and down, the diaphragm decompression buffer device 11 above the diaphragm 8 operates at the same time, and the rotating rod 4 drives the straight rod 114 to rotate when it rotates, and the straight rod 114 drives the push plate 115 to rotate, and the push plate 115 hits the decompression and drainage plate 113 when it rotates, and the push plate 115 drives the decompression and drainage plate 113 to rotate, and when the diaphragm 8 is agitated upward, the upper surface of the diaphragm 8 hits the diaphragm decompression buffer device 11, and the buffer head 112 buffers the diaphragm 8 through the spring between the large bracket 111 to prevent the diaphragm 8 from being damaged due to excessive pressure. At the same time, the decompression and drainage plate 113 fits against the upper surface of the diaphragm 8, and the decompression and drainage plate 113 evenly distributes the pressure generated when the diaphragm 8 is agitated upward by rotation to prevent the diaphragm 8 from being damaged due to uneven force.

When the diaphragm 8 is damaged, liquid will leak into the top of the diaphragm 8, and the decompression drainage plate 113 will rotate on the upper surface of the diaphragm 8. The decompression drainage plate 113 will push the leaking liquid when it rotates, and the leaking liquid will be discharged from the leakage outlet on the right side of the bottom of the transmission body 1 as soon as possible to prevent the leakage from further damaging the diaphragm 8. The leaking liquid enters the leakage collection box 121 from the leakage outlet. When a small amount of liquid leaks, the leakage alarm device 12 will not react. When the sensor in the leakage collection box 121 senses a large amount of liquid leakage, the operating rod 122 starts to operate, and the operating rod 122 controls the movement of the electric telescopic rod 123, and the electric telescopic rod 123 drives the U-shaped card plate 124 to the direction of the sliding piston 6. When the sliding piston 6 moves to the left, the U-shaped clamping plates 124 on both sides close to control the sliding piston 6 and keep it in the downward state. When the sliding piston 6 is kept in the downward state, the diaphragm 8 is also in the downward agitation state, and the liquid in the pump head 7 is also in the discharge state, thereby ensuring the cleanliness of the inside of the pump head 7 and making it less troublesome for the technicians to replace the diaphragm 8. The external motor above the transmission body 1 will automatically stop when it cannot run, so that the entire machine stops running and reduces material loss. The limiting block 125 inside the transmission body 1 can fix the movement trajectory of the sliding piston 6 without causing tilting, offset and the like, thereby improving the safety and stability of the machine.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a range adjustable metering pump, includes drive fuselage (1) and sliding piston (6), drive fuselage (1) top inner wall rotates installs worm (2), worm (2) outer wall and worm wheel (3) meshing, worm wheel (3) fixed mounting is at bull stick (4) outer wall, and bull stick (4) one end and drive fuselage (1) inner wall rotate and be connected, one end fixed mounting eccentric wheel (5) of drive fuselage (1) inner wall are kept away from to bull stick (4), eccentric wheel (5) are located inside sliding piston (6), drive fuselage (1) below fixed mounting has pump head (7), pump head (7) top fixed mounting has diaphragm (8), pump head (7) both sides fixed mounting has one-way access valve (9), its characterized in that: the device is characterized in that a constant temperature range adjusting device (10) is arranged on the outer wall of the left side inlet valve of the one-way inlet valve (9), the constant temperature range adjusting device (10) comprises a sensing device (101) and a small support (104), a range adjusting valve (102) is arranged on the inner wall of the sensing device (101), a constant temperature device (103) is fixedly connected with the outer wall of the left side of the sensing device (101), the small support (104) is fixedly arranged on the inner wall of a pipeline of the left side inlet valve of the one-way inlet valve (9), and a fan (105) is rotatably arranged on the outer wall of the right side of the small support (104).

2. A metering pump of adjustable range as claimed in claim 1, wherein: the outer wall of the right side of the bottom of the transmission machine body (1) is provided with a liquid leakage outlet, the bottom of the liquid leakage outlet is parallel to the upper surface of the diaphragm (8), and the interior of the liquid leakage collecting box (121) is communicated with the liquid leakage outlet.

3. A metering pump of adjustable range as claimed in claim 1, wherein: the constant temperature device (103) is spirally distributed on the outer wall of the valve pipeline at the left side of the one-way inlet and outlet valve (9) in an annular pipeline.

4. A metering pump of adjustable range as claimed in claim 1, wherein: the utility model discloses a transmission fuselage, including transmission fuselage (1), transmission fuselage (1) lower half are provided with diaphragm decompression buffer (11), diaphragm decompression buffer (11) include big support (111) and straight-bar (114), big support (111) fixed mounting is at transmission fuselage (1) lower half inner wall, the middle part below swing joint of big support (111) has buffer head (112), buffer head (112) are outer wall rotation all around is connected with decompression drain bar (113), straight-bar (114) one end and bull stick (4) bottom outer wall fixed connection, one end outer wall fixed mounting that bull stick (114) kept away from bull stick (4) has push pedal (115).

5. A metering pump with adjustable measuring range according to claim 4, the method is characterized in that: the decompression liquid discharge plate (113) is positioned on the movement track of the push plate (115).

6. A metering pump with adjustable measuring range according to claim 4, the method is characterized in that: the buffer head (112) is connected with the large bracket (111) by a spring.

7. A metering pump of adjustable range as claimed in claim 1, wherein: the utility model provides a transmission fuselage (1) right side outer wall is provided with weeping warning device (12), weeping warning device (12) are including weeping collection box (121), weeping collection box (121) fixed mounting is at transmission fuselage (1) right side outer wall, weeping collection box (121) top and action bars (122) one end fixed connection, action bars (122) other end and transmission fuselage (1) right side outer wall fixed connection, action bars (122) are kept away from the one end and electric telescopic handle (123) one end fixed connection of weeping collection box (121), and electric telescopic handle (123) run through transmission fuselage (1) right side inner wall, electric telescopic handle (123) other end and U type cardboard (124) right side outer wall fixed connection, U type cardboard (124) bottom slidable mounting is in limit piece (125) top outer wall, and limit piece (125) right side outer wall fixed mounting is at transmission fuselage (1) right side inner wall.

8. The metering pump of claim 7 wherein the metering pump is adjustable in range, and wherein: the limiting blocks (125) are arranged at the left side and the right side of the inside of the transmission machine body (1), and the movement track of the sliding piston (6) is limited between the two limiting blocks (125).