A diaphragm booster pump with a buffer and noise reduction mechanism

Abstract

The present application discloses a diaphragm booster pump with a buffer and noise reduction mechanism, belonging to the technical field of diaphragm booster pumps. It 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 to an external input pipeline. The outlet section of the Venturi tube communicates with the liquid suction cavity of the pump body. A first connecting pipe is communicated with the throat in the Venturi tube. A first piston plate slides in the first connecting pipe. A first spring is arranged in the first connecting pipe. Two ends of the first spring are respectively fixedly arranged on the first piston plate and the side wall of the Venturi tube. A blade is rotatably arranged in the outlet section of the Venturi tube. A first driving component 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

[0001] This application relates to the technical field of diaphragm booster pumps, and particularly to a diaphragm booster pump with a buffer and noise reduction mechanism. Background Art

[0002] A diaphragm booster pump is a device that realizes liquid pressurization through the reciprocating motion of a diaphragm. Its working principle is to use an electric motor or pneumatic drive to deform the diaphragm, periodically compress the volume of the pump chamber, thereby increasing the pressure of the medium. This pump has the characteristics of strong sealing, low noise, good corrosion resistance, etc., and is suitable for fields such as water treatment, industrial equipment, automobile manufacturing, household pressurization, etc., especially suitable for transporting liquids containing particles or corrosives.

[0003] In the prior art, a diaphragm booster pump includes a pump body. An inlet pipe and an outlet pipe are respectively connected to both sides of the pump body. The pump body is fixedly installed on a base through bolts. However, when the valve on the inlet pipe or the valve on the outlet pipe is suddenly closed, the liquid flow is blocked, which will cause the pressure to rise rapidly. Or when the liquid flow rate suddenly increases, the flow velocity speeds up, which will also cause the pressure to rise. The sudden increase in pressure will cause the pump body and the pipeline system to vibrate, and the vibration will cause noise, affecting the operation stability and service life of the equipment. Summary of the Invention

[0004] In order to reduce the vibration and noise generated by the diaphragm booster pump during operation, thereby increasing the service life and operation stability of the equipment. This application provides a diaphragm booster pump with a buffer and noise reduction mechanism.

[0005] A diaphragm booster pump with a buffer and noise reduction mechanism provided by this application adopts the following technical solutions:

[0006] A diaphragm booster pump with a buffer and noise reduction mechanism includes a pump body, an inlet pipe, an outlet pipe, and a base. A Venturi tube is installed in the inlet pipe. The inlet section of the Venturi tube is connected to the inlet of the inlet pipe to connect to an external input pipeline. The outlet section of the Venturi tube communicates with the liquid suction chamber of the pump body. A first connecting pipe is connected to the throat in the Venturi tube. A piston plate is slidably arranged in the first connecting pipe. A first spring is arranged in the first connecting pipe. Two ends of the first spring are respectively fixedly arranged on the piston plate and the side wall of the Venturi tube. A blade is rotatably arranged in the outlet section of the Venturi tube. A first driving component for driving the blade to rotate is arranged in the inlet pipe.

[0007] By adopting the above technical solution, the liquid flows from the external input pipeline through the Venturi tube into the liquid suction cavity of the pump body. When the liquid in the liquid inlet pipe enters the contraction section of the Venturi tube, due to the gradually decreasing cross-sectional area of the pipeline, the flow rate of the liquid will gradually increase, and the pressure of the liquid will gradually decrease. When the water pressure suddenly increases, the increase in pressure will prompt the liquid to flow into the contraction section faster, thereby further increasing the flow rate and correspondingly further decreasing the pressure, avoiding the direct action of excessive pressure on the pump body; the throat of the Venturi tube is the part with the smallest cross-sectional area, where the flow rate of the liquid reaches the maximum value and the pressure reaches the minimum value; the relatively small cross-sectional area and stable flow rate in the throat enable the liquid to form a relatively stable flow state in the throat; after the liquid flows out of the throat, it enters the diffusion section, where the cross-sectional area gradually increases, the flow rate of the liquid will gradually decrease, and the pressure of the liquid will gradually increase, enabling the relatively low pressure in the throat to gradually recover to an appropriate level so that the liquid can enter the liquid suction cavity of the pump body with a relatively stable pressure.

[0008] The Venturi tube buffers the sudden water pressure through the contraction section, the throat provides a stable flow state, and the diffusion section restores and fine-tunes the liquid pressure, thereby effectively alleviating the sudden water pressure and stabilizing the pressure of the liquid entering the pump body; thus reducing the impact of water pressure mutation on the pump body, reducing the 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.

[0009] When the diaphragm booster pump is in a normal working state, the pressure in the throat of the Venturi tube is relatively stable. Piston plate 1 is in the initial position under the action of spring 1, the first driving component does not act, and the blades are in the initial flow guiding state, with less obstruction to the liquid flow, and the liquid can enter the pump body relatively smoothly; when there is a pressure mutation in the liquid suction cavity of the pump body, resulting in a sudden decrease in the liquid flow rate or a sudden increase in pressure in the liquid inlet pipe, the pressure in the throat of the Venturi tube will also increase accordingly. The increased pressure will push piston plate 1 to overcome the elastic force of spring 1 and slide in connecting pipe 1. The movement of piston plate 1 triggers the first driving component, and the first driving component drives the blades in the outlet section of the Venturi tube to rotate. After the blades rotate, they will increase the blocking area for the liquid, change the flow direction and speed of the liquid, and reduce the impact force of the water flow on the pump body and the pipeline system; through the rotation of the blades, the impact and collision of the water flow on the pump body and the pipeline system are effectively reduced, and the vibration amplitude of the pump body is reduced, thereby further reducing the noise.

[0010] Preferably, the first driving assembly includes a first piston rod, a first connecting rod, a first rack, a first gear, a first rotating rod, a rotating plate, a second connecting rod, a sliding rod, and a first push rod. One end of the first piston rod is fixedly arranged on the first piston plate. The first piston rod slides in the first connecting pipe, and one end of the first piston rod extends outside the first connecting pipe. The first rack slides in the liquid inlet pipe. Two ends of the first connecting rod are respectively hinged to the first piston rod and the first rack. The first rotating rod is rotatably arranged in the liquid inlet pipe, and one end of the first rotating rod penetrates into the outlet section of the Venturi tube. The first gear is fixedly arranged on the first rotating rod, and the first rack meshes with the first gear. The rotating plate is rotatably arranged in the outlet section of the Venturi tube. The rotating plate is fixedly arranged on the first rotating rod. The first push rod is fixedly arranged on the blade. The sliding rod slides in the outlet section of the Venturi tube. The first push rod slides on the sliding rod. Two ends of the second connecting rod are respectively rotatably arranged on the rotating plate and the sliding rod.

[0011] By adopting the above technical solution, when the pressure at the throat of the Venturi tube increases, the increased pressure will push the first piston plate to slide in the first connecting pipe against the elastic force of the first spring. The movement of the first piston plate will drive the first piston rod to slide synchronously in the first connecting pipe. The first piston rod drives the first connecting rod to rotate. The first connecting rod pushes the first rack to move. The sliding of the first rack drives the first gear to rotate. The first gear drives the first rotating rod to rotate. The rotation of the first rotating rod will drive the rotating plate to rotate in the outlet section of the Venturi tube. The rotation of the rotating plate will drive the sliding rod to slide in the outlet section of the Venturi tube through the second connecting rod. The sliding rod pushes the first push rod to move. The first push rod drives the blade to rotate, thereby increasing the blocking area of the blade against the liquid. When the pressure at the throat of the Venturi tube returns to normal, the elastic force of the first spring will reset the first piston plate. Through the reverse movement of the above series of mechanical structures, the blade will also return to the initial flow guiding state. The whole process enables the blade to adjust the blocking degree of the liquid according to the change degree of the throat pressure, so as to realize the regulation of the water flow, effectively buffer the sudden change of water pressure, reduce the vibration amplitude of the pump body, and further reduce the noise generated by vibration, improving the operating environment of the pump body.

[0012] Preferably, a pressure pulsation buffering mechanism is arranged on the liquid outlet pipe. The pressure pulsation buffering mechanism includes a second connecting pipe, a second piston plate, an air bag, and an extrusion plate. The second connecting pipe is communicated with the liquid outlet pipe. The second piston plate is slidably connected to the inner cavity of the second connecting pipe. The air bag is installed in the second connecting pipe. The extrusion plate slides in the second connecting pipe, and the extrusion plate extrudes the air bag. The pressure pulsation buffering mechanism further includes a second driving assembly for driving the extrusion plate to extrude the air bag and an adaptive adjustment assembly for adjusting the volume of the air bag.

[0013] By adopting the above technical solution, when the diaphragm booster pump is working, the liquid pressure in the liquid outlet pipe will produce pulsation, and the pressure pulsation will be transmitted to its inner cavity through the second connecting pipe, generating a force on the second piston plate. When the pressure pulsation is transmitted to the second connecting pipe, the change in pressure will push the second piston plate to slide in the inner cavity of the second connecting pipe; when the pressure increases, the movement of the second piston plate will trigger the second driving assembly, and the second driving assembly drives the pressing plate to press the airbag; the gas in the airbag is compressed, and the airbag absorbs part of the energy brought by the pressure pulsation, thus playing a role in buffering the pressure pulsation, making the pressure of the output liquid more stable, reducing the vibration of the pump body caused by the pressure pulse, and thus reducing the noise caused by the vibration of the pump body; the adaptive adjustment assembly automatically adjusts the volume and rigidity of the airbag according to the specific situation of the pressure pulsation. When the pressure pulsation is large, the adaptive adjustment assembly will increase the volume of the airbag so that it can absorb more energy. At the same time, the rigidity of the airbag increases, and its ability to resist deformation is enhanced. When the airbag with a higher rigidity is subjected to a rapid pressure change, the deformation amount is smaller, ensuring a rapid response during high-frequency pulsation and reducing the secondary vibration caused by excessive deformation of the airbag.

[0014] Preferably, the second driving assembly includes 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 connecting 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 connecting pipe. A rotating rod is rotatably arranged on the second push rod. The rotating rod is rollingly arranged at one end of the top plate. A pressing member for pressing the pressing plate to move is arranged at one end of the top plate close to the pressing plate.

[0015] By adopting the above technical solution, when there is pressure pulsation in the liquid outlet pipe, the pressure change will be transmitted to the second piston plate through the second connecting pipe. The second piston plate slides in the second connecting pipe. The movement of the second piston plate will drive the second push rod to slide synchronously in the second connecting pipe. The rotating rod will also move with the movement of the second push rod. The rotating rod drives the top plate to rotate in the second connecting pipe around its rotation point. As the top plate rotates, the pressing member will contact the pressing plate and apply pressure to it, pushing the pressing plate to slide in the second connecting pipe towards the direction of the airbag, and then squeezing the airbag, thereby reducing the difficulty of the pressing plate squeezing the airbag.

[0016] Preferably, the pressing member is a roller. The roller is rotatably arranged at one end of the top plate. The roller is attached to and rollingly arranged on the pressing plate.

[0017] By adopting the above technical solution, when the top plate rotates, it drives the roller to rotate. The roller rolls on the surface of the pressing plate, converting the rotational motion of the top plate into the linear motion of the pressing plate. The roller and the pressing plate have rolling friction, reducing the vibration generated by friction and improving the response speed at the same time.

[0018] Preferably, a roller is rotatably arranged on the inner wall of the second connecting pipe. A second spring and a pulling rope are arranged in the second connecting pipe. One end of the second spring is fixedly arranged on the inner wall of the second connecting pipe. The two ends of the pulling rope are respectively fixedly arranged at one end of the top plate and the end of the second spring. The pulling rope is attached to the side wall of the roller, and the roller guides the pulling rope.

[0019] By adopting the above technical solution, when the pressure pulsation of the liquid outlet pipe causes the piston plate II to move, the push rod II drives the top plate to rotate around the fulcrum. The pulling rope at one end of the top plate is stretched as the top plate rotates, and the second spring is stretched to store elastic potential energy. The roller rotates to guide the movement direction of the pulling rope to ensure the stability of the force transmission path. The second spring applies a reverse reset force to the top plate through the pulling rope; when the pressure pulsation weakens, the second spring releases the elastic potential energy and drives the top plate to rotate in the reverse direction through the pulling rope. The extrusion plate is reset under the action of the rebound force of the airbag to complete a buffering cycle; in addition, the second spring provides a pre-tightening force to enable the top plate to quickly reset after the pressure pulsation disappears, avoiding secondary vibration; the second spring can convert part of the pressure pulsation energy into elastic potential energy, reducing the energy consumption of the system.

[0020] Preferably, the adaptive adjustment assembly includes an air collecting box, a connecting pipe, a push rod III and a connecting rod III. The air collecting box is installed on the outer side wall of the second connecting pipe. The two ends of the connecting pipe are respectively communicated with the airbag and the inner cavity of the air collecting box. One-way valves are installed on the side wall of the air collecting box and the connecting pipe, and a one-way valve is also installed on the side wall of the airbag; a piston plate III is slidably connected to the inner wall of the air collecting box, and the push rod III slides on the air collecting box. One end of the push rod III is fixedly arranged on the piston plate III; the two ends of the connecting rod III are respectively hinged to the push rod II and the push rod III.

[0021] By adopting the above technical solution, when the pressure pulsation of the liquid outlet pipe increases, the piston plate II slides in the second connecting pipe and drives the push rod II to move at the same time. The push rod II drives the connecting rod III to rotate, the connecting rod III drives the push rod III to move, and the push rod III drives the piston plate III to slide in the air collecting box. The air in the air collecting box is pushed by the piston plate III and injected into the airbag through the one-way valve on the connecting pipe, and the volume of the airbag increases; when the pressure decreases, the gas in the airbag discharges outward through its own one-way valve, and the volume of the airbag decreases until the air pressure in the airbag is the same as the external atmospheric pressure; thus, it is convenient to realize the real-time adjustment of the volume of the airbag.

[0022] Preferably, a connecting plate is fixedly arranged on the bottom side wall of the pump body. A support plate is arranged on the side of the connecting plate close to the base. The support plate abuts against the base. A plurality of third springs are arranged between the connecting plate and the support plate. The two ends of the third spring are respectively fixedly arranged on the connecting plate and the support plate.

[0023] By adopting the above technical solution, when the diaphragm booster pump is working, the reciprocating movement of the diaphragm, the flow of the liquid, and the operation of the mechanical components will generate vibrations. These vibrations will be transmitted to the connecting plate connected thereto through the pump body; when the pump body vibrates and causes the connecting plate to move downward or upward, the third spring is compressed or stretched, and the third spring stores elastic potential energy, slowing down its descending or ascending speed; through this compression and stretching process of the third spring, the vibration energy is continuously absorbed and released, thereby buffering the vibration of the pump body, and further reducing the noise caused by the vibration of the pump body.

[0024] Preferably, a sleeve and a second piston rod are provided inside the third spring. One end of the sleeve is fixedly arranged on the connecting plate, one end of the second piston rod is fixedly arranged on the support plate, and one end of the second piston rod is slidably connected to the inner wall of the sleeve; a channel is formed in the connecting pipe, a liquid storage box for storing damping liquid is arranged on the side wall of the pump body, and a third connecting pipe is arranged between the liquid storage box and the connecting plate. Two ends of the third connecting pipe 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 flows through the sleeve, the channel and the third connecting pipe; a ball valve is installed on the third connecting pipe, and a third driving component for driving the valve body rotating shaft in the ball valve is arranged outside the pump body.

[0025] By adopting the above technical solution, when the pump body vibrates due to liquid pulsation, the vibration is transmitted to the sleeve and the second piston rod in the spring through the connecting plate. The vibration causes relative sliding between the sleeve and the second piston rod, and the damping liquid in the sleeve flows under the extrusion of the second piston rod. The damping liquid flows into the liquid storage box through the channel and the third connecting pipe; the damping liquid generates viscous resistance when flowing in the channel. When the liquid pulsation generates vibration, the third driving component will be triggered. The third driving component can drive the rotation of the valve body rotating shaft of the ball valve according to the vibration intensity to change the opening degree of the ball valve; when the vibration is strong, the third driving component reduces the opening degree of the ball valve, making the flow resistance of the damping liquid increase and the flow rate decrease, enhancing the damping effect, increasing the system stiffness, and suppressing high-frequency vibration; when the vibration is weak, the opening degree of the ball valve increases, the liquid flows smoothly, the damping decreases, and excessive damping is avoided.

[0026] Preferably, the third driving component includes a fourth push rod, a second rack and a second rotating rod. One end of the fourth push rod is fixedly arranged on the second push rod, one end of the second rack is fixedly arranged on the fourth push rod, the second rotating rod is rotatably arranged on the outer side wall of the pump body, and one end of the second rotating rod is fixedly arranged on the rotating shaft of the valve body in the ball valve. A second gear is fixedly arranged on the second rotating rod, and the second gear meshes with the second rack.

[0027] By adopting the above technical solution, the vibration generated during the operation of the diaphragm booster pump will cause the piston plate II and the push rod II to slide within the connecting pipe II. The movement of the push rod II will synchronously drive the movement of the push rod IV. The movement of the push rod IV will cause the rack II to also move linearly. When the rack II moves linearly, it will drive the gear II to rotate. The rotation of the gear II will drive the rotating rod II to rotate on the outer side wall of the pump body. The rotation of the rotating rod II will directly drive the rotation of the rotating shaft of the valve body within the ball valve, thereby changing the opening and closing degree of the ball valve; when the vibration intensity of the pump body is greater, the opening and closing degree of the ball valve decreases, reducing the flow rate of the damping liquid; when the vibration intensity decreases, the opening and closing degree of the ball valve increases, increasing the flow rate of the damping liquid.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. When the liquid flows from the external input pipeline into the Venturi tube within the liquid inlet pipe, if the water pressure suddenly increases, the liquid flows into the contraction section of the Venturi tube, the flow rate increases, and the pressure decreases; the pressure at the throat of the Venturi tube increases accordingly, pushing the piston plate I to overcome the elastic force of the spring I and slide within the connecting pipe I; the sliding of the piston plate I can drive the rotating plate to rotate, and the rotating plate drives the sliding rod to slide within the outlet section of the Venturi tube through the connecting rod II. The sliding rod pushes the push rod I to move, and the push rod I drives the blade to rotate; the contraction section, throat, and diffusion section of the Venturi tube cooperate with each other to effectively relieve the sudden water pressure and stabilize the pressure of the liquid entering the pump body; after the blade rotates, it increases the blocking area of the liquid, changes the flow direction and speed of the liquid, reduces the impact force of the water flow on the pump body and the pipeline system, reduces the vibration amplitude of the pump body, further reduces the noise, also reduces the impact of the sudden water pressure on the pump body, extends the service life of the pump body, and improves the working efficiency and stability of the pump body;

[0030] 2. During the operation of the diaphragm booster pump, the liquid pressure in the liquid outlet pipe generates pulsation. The pressure pulsation is transmitted to its inner cavity through the connecting pipe II, pushing the piston plate II to slide within the inner cavity of the connecting pipe II; the movement of the piston plate II triggers the second driving component, and the second driving component drives the top plate to rotate, causing the roller shaft at one end of the top plate to roll on the surface of the extrusion plate, pushing the extrusion plate to extrude the airbag; at the same time, when the push rod II moves, it can also drive the piston plate III to slide within the air collection box. The air in the air collection box is pushed by the piston plate III and injected into the airbag through the one-way valve on the connecting pipe, increasing the volume of the airbag; when the pressure decreases, the gas in the airbag exhausts outward through its own one-way valve, and the volume of the airbag decreases; when the airbag is extruded, it absorbs a part of the energy brought by the pressure pulsation, playing a role in buffering the pressure pulsation, making the pressure of the output liquid more stable, and reducing the vibration and noise of the pump body caused by the pressure pulse; the adaptive adjustment component can automatically adjust the volume and rigidity of the airbag according to the pressure pulsation situation. When the pressure pulsation is relatively large, it increases the volume of the airbag to absorb more energy, and at the same time increases the rigidity of the airbag to reduce the secondary vibration caused by the excessive deformation of the airbag, ensuring a rapid response during high-frequency pulsation;

[0031] 3. When the diaphragm booster pump vibrates due to liquid pulsation, the set spring three is compressed or stretched. Spring three continuously absorbs and releases vibration energy, playing a buffering role in the vibration of the pump body and reducing the noise caused by the vibration of the pump body. The casing in spring three and the piston rod two slide relative to each other due to vibration, and the damping liquid in the casing flows under the extrusion of the piston rod two, flowing into the liquid storage box through the channels in the connecting pipe and the connecting pipe three. At the same time, when pulsation occurs due to liquid pressure in the liquid outlet pipe, the piston plate two and the push rod two slide in the connecting pipe two, and the push rod two can drive the rotation of the valve body in the ball valve to change the opening and closing degree of the ball valve. When the vibration intensity of the pump body is greater, the opening and closing degree of the ball valve decreases, and the flow rate of the damping liquid slows down, enhancing the damping effect and suppressing high-frequency vibration. When the vibration intensity decreases, the opening and closing degree of the ball valve increases, and the flow rate of the damping liquid becomes faster, avoiding excessive damping and further improving the stability and reliability of the pump body operation. Description of the Drawings

[0032] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0033] Figure 2 is the structural schematic diagram highlighting the Venturi tube in the embodiment of the present application;

[0034] Figure 3 is the structural schematic diagram highlighting the blades in the embodiment of the present application;

[0035] Figure 4 is the structural schematic diagram highlighting the airbag in the embodiment of the present application;

[0036] Figure 5 is Figure 4 the enlarged view of A in

[0037] Figure 6 is Figure 4 the enlarged view of B in

[0038] Description of the Reference Numerals:

[0039] 1. Pump body; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Base; 5. Venturi tube; 6. First connecting pipe; 7. First piston plate; 8. First spring; 9. Blade; 10. First driving assembly; 101. First piston rod; 102. First connecting rod; 103. First rack; 104. First gear; 105. First rotating rod; 106. Rotating plate; 107. Second connecting rod; 108. Slide rod; 109. First push rod; 110. Guide rod; 111. Guide block; 112. First chute; 12. Pressure pulsation buffer mechanism; 121. Second connecting pipe; 122. Second piston plate; 123. Airbag; 124. Extrusion plate; 125. First partition; 126. Upper cavity; 128. Second partition; 129. Left cavity; 130. Right cavity; 13. Second driving assembly; 131. Second push rod; 132. Top plate; 133. Rotating rod; 134. Guide plate; 135. Roller; 14. Adaptive adjustment assembly; 141. Air collecting box; 142. Connecting pipe; 143. Third push rod; 144. Third connecting rod; 145. Third piston plate; 15. Roller; 16. Second spring; 17. Pulling rope; 18. Connecting plate; 19. Support plate; 20. Third spring; 21. Sleeve; 22. Second piston rod; 23. Liquid storage box; 24. Third connecting pipe; 25. Ball valve; 26. Third driving assembly; 261. Fourth push rod; 262. Second rack; 263. Second rotating rod; 264. Second chute; 265. Support rod; 266. Second gear. Detailed implementation manners

[0040] The following further elaborates on this application in conjunction with the Figures 1-6 accompanying drawings.

[0041] The embodiment of this application discloses a diaphragm booster pump with a buffer and noise reduction mechanism. As Figure 1 shown in Figure 2 and

[0042] shown in Figure 2 and Figure 3 shown in

[0043] shown in Figure 1 and Figure 2As shown, the liquid flows from the external input pipeline through the Venturi tube 5 into the liquid suction cavity of the pump body 1. When the liquid in the liquid inlet pipe 2 enters the contraction section of the Venturi tube 5, due to the gradually decreasing cross-sectional area of the pipeline, the flow rate of the liquid will gradually increase, and the pressure of the liquid will gradually decrease. When the water pressure suddenly increases, the increase in pressure will prompt the liquid to flow into the contraction section faster, thereby further increasing the flow rate and correspondingly further decreasing the pressure, avoiding the direct action of excessive pressure on the pump body 1; the throat of the Venturi tube 5 is the part with the smallest cross-sectional area, where the flow rate of the liquid reaches the maximum value and the pressure reaches the minimum value; the relatively small cross-sectional area and stable flow rate in the throat enable the liquid to form a relatively stable flow state in the throat; after the liquid flows out of the throat and enters the diffuser section, the cross-sectional area of the diffuser section gradually increases, the flow rate of the liquid will gradually decrease, and the pressure of the liquid will gradually increase, enabling the relatively low pressure in the throat to gradually recover to an appropriate level so that the liquid can enter the liquid suction cavity of the pump body 1 with a relatively stable pressure.

[0044] As Figure 1 and Figure 2 shown, the Venturi tube 5 buffers the sudden water pressure through the contraction section, the throat provides a stable flow state, and the diffuser section restores and fine-tunes the liquid pressure, thereby effectively alleviating the sudden water pressure and stabilizing the pressure of the liquid entering the pump body 1; thus reducing the impact of water pressure mutation on the pump body 1, reducing the vibration and noise of the pump body 1, prolonging the service life of the pump body 1, and improving the working efficiency and stability of the pump body 1.

[0045] As Figure 2 and Figure 3 shown, when the diaphragm booster pump is in a normal working state, the pressure in the throat of the Venturi tube 5 is relatively stable, the piston plate one 7 is in the initial position under the action of the spring one 8, the first driving component 10 does not act, the blade 9 is in the initial diversion state, and the resistance to the liquid flow is small, so the liquid can enter the pump body 1 relatively smoothly; when there is a pressure mutation in the liquid suction cavity of the pump body 1, resulting in a sudden decrease in the liquid flow rate or a sudden increase in pressure in the liquid inlet pipe 2, the pressure in the throat of the Venturi tube 5 will also increase accordingly. The increased pressure will push the piston plate one 7 to overcome the elastic force of the spring one 8 and slide in the connecting pipe one 6. The movement of the piston plate one 7 triggers the first driving component 10, and the first driving component 10 drives the blade 9 in the outlet section of the Venturi tube 5 to rotate. After the blade 9 rotates, it will increase the blocking area of the liquid, change the flow direction and speed of the liquid, and reduce the impact force of the water flow on the pump body 1 and the pipeline system; through the rotation of the blade 9, the impact and collision of the water flow on the pump body 1 and the pipeline system are effectively reduced, and the vibration amplitude of the pump body 1 is reduced, thereby further reducing the noise.

[0046] As Figure 2 and Figure 3As shown, the first driving assembly 10 includes a first piston rod 101, a first connecting rod 102, a first rack 103, a first gear 104, a first rotating rod 105, a rotating plate 106, a second connecting rod 107, a sliding rod 108, and a first push rod 109. One end of the first piston rod 101 is fixedly connected to the first piston plate 7. The first piston rod 101 slides in the first connecting pipe 6, and one end of the first piston rod 101 extends outside the first connecting pipe 6. The first rack 103 slides axially in the liquid inlet pipe 2. A guide rod 110 is fixedly arranged on the inner wall of the liquid inlet pipe 2. The axis of the guide rod 110 is parallel to the axis of the liquid inlet pipe 2. A guide block 111 is fixedly connected to the first rack 103. The guide rod 110 passes through and slides in the guide block 111. The two ends of the first connecting rod 102 are respectively hinged to the first piston rod 101 and the first rack 103. The first rotating rod 105 is arranged in the liquid inlet pipe 2, and one end of the first rotating rod 105 passes through and extends into the outlet section of the Venturi tube 5. The first rotating rod 105 is rotationally sealed to the side wall of the Venturi tube 5. The first gear 104 is sleeved and fixed at the end of the first rotating rod 105. The first rack 103 meshes with the first gear 104. The rotating plate 106 is rotatably arranged in the outlet section of the Venturi tube 5. The rotating plate 106 is fixedly connected to one end of the first rotating rod 105 located inside the Venturi tube 5. A plurality of first push rods 109 are provided, and the plurality of first push rods 109 are arranged in one-to-one correspondence with the plurality of blades 9. One end of the first push rod 109 is fixedly arranged on the side wall of the surface of the blade 9. The sliding rod 108 is in a circular ring shape. The sliding rod 108 slides in the outlet section of the Venturi tube 5 along the axial direction of the liquid inlet pipe 2, and the sliding rod 108 is located on the side of the blade 9 close to the pump body 1. A first chute 112 for the first push rod 109 to slide is formed in the inner side wall of the sliding rod 108 along the circumferential direction of the sliding rod 108. The two ends of the second connecting rod 107 are respectively rotatably connected to the top side wall of the rotating plate 106 and the side of the sliding rod 108 close to the pump body 1.

[0047] As Figure 2 and Figure 3As shown, when the pressure in the throat of the Venturi tube 5 increases, the increased pressure will push the piston plate 7 in the connecting pipe 6 to slide within the connecting pipe 6 against the elastic force of the spring 8. The movement of the piston plate 7 will drive the piston rod 101 to synchronously slide within the connecting pipe 6. The piston rod 101 drives the connecting rod 102 to rotate. The connecting rod 102 pushes the rack 103 to move. The sliding of the rack 103 drives the gear 104 to rotate. The gear 104 drives the rotating rod 105 to rotate. The rotation of the rotating rod 105 will drive the rotating plate 106 to rotate within the outlet section of the Venturi tube 5. The rotation of the rotating plate 106 will drive the sliding rod 108 to slide within the outlet section of the Venturi tube 5 through the connecting rod 107. The sliding rod 108 pushes the push rod 109 to move. The push rod 109 drives the blade 9 to rotate, thereby increasing the blocking area of the blade 9 against the liquid. When the pressure in the throat of the Venturi tube 5 returns to normal, the elastic force of the spring 8 will reset the piston plate 7. Through the reverse movement of the above series of mechanical structures, the blade 9 will also return to the initial diversion state. The whole process enables the blade 9 to adjust the blocking degree of the liquid according to the change degree of the throat pressure, so as to realize the regulation of the water flow, effectively buffer the sudden change of water pressure, reduce the vibration amplitude of the pump body 1, and further reduce the noise generated by the vibration, improving the operating environment of the pump body 1.

[0048] As Figure 1 and Figure 4 shown, a pressure pulsation buffer mechanism 12 is provided on the liquid outlet pipe 3. The pressure pulsation buffer mechanism 12 includes a connecting pipe 121, a piston plate 122, an airbag 123 and a pressing plate 124. The connecting pipe 121 communicates with the inner cavity of the liquid outlet pipe 3. The piston plate 122 is located in the connecting pipe 121 near the liquid outlet pipe 3, and the piston plate 122 is slidably connected to the inner wall of the connecting pipe 121. A partition plate 125 is fixedly connected to the inner wall of the connecting pipe 121. The partition plate 125 is horizontally arranged. The partition plate 125 divides the inner cavity of the connecting pipe 121 into an upper cavity 126 and a lower cavity. A partition plate 128 is fixedly connected to the inner wall of the lower cavity of the connecting pipe 121. The partition plate 128 is vertically arranged. The partition plate 128 divides the lower cavity of the connecting pipe 121 into a left cavity 129 and a right cavity 130. The side wall of the airbag 123 is fixedly connected to the inner wall of the right cavity 130 in the connecting pipe 121. The pressing plate 124 slides vertically within it and presses against the airbag 123. The pressure pulsation buffer mechanism 12 further includes a second driving component 13 for driving the pressing plate 124 to press the airbag 123 and an adaptive adjustment component 14 for adjusting the volume of the airbag 123.

[0049] As Figure 1 and Figure 4As shown, when the diaphragm booster pump is working, the liquid pressure in the liquid outlet pipe 3 will produce pulsations. The pressure pulsations will be transmitted to its inner cavity through the second connecting pipe 121, generating a force on the second piston plate 122. When the pressure pulsations are transmitted to the second connecting pipe 121, the change in pressure will push the second piston plate 122 to slide in the inner cavity of the second connecting pipe 121; when the pressure increases, the movement of the second piston plate 122 will trigger the second driving assembly 13, and the second driving assembly 13 drives the extrusion plate 124 to extrude the airbag 123; the gas in the airbag 123 is compressed, and the airbag 123 absorbs part of the energy brought by the pressure pulsations, thus playing a role in buffering the pressure pulsations, making the pressure of the output liquid more stable, reducing the vibration of the pump body 1 caused by the pressure pulse, and thus reducing the noise caused by the vibration of the pump body 1; the adaptive adjustment assembly 14 automatically adjusts the volume and rigidity of the airbag 123 according to the specific situation of the pressure pulsations. When the pressure pulsations are relatively large, the adaptive adjustment assembly 14 will increase the volume of the airbag 123 so that it can absorb more energy. At the same time, the rigidity of the airbag 123 increases, and its ability to resist deformation is enhanced. When the airbag 123 with higher rigidity is subjected to rapid pressure changes, the deformation amount is smaller, ensuring a rapid response during high-frequency pulsations and reducing the secondary vibration caused by excessive deformation of the airbag 123.

[0050] As Figure 4 , Figure 5 and Figure 6 shown, the second driving assembly 13 includes a second push rod 131 and a top plate 132. The second push rod 131 is vertically arranged, 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, and 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 at the center of the top plate 132, and the rotating shaft is rotatably connected to the side wall of the second partition plate 128. Both ends of the top plate 132 are located in the left cavity 129 and the right cavity 130 respectively; the bottom end of the second push rod 131 is provided with a rotating rod 133 in a penetrating and rotatable manner, a guiding plate 134 is fixedly connected to the side of the top plate 132 close to the second push rod 131, the rotating rod 133 passes through and slides on the side wall of the guiding plate 134, and the rotating rod 133 is in rolling connection with the side wall of the guiding plate 134; a pressing member for pressing the extrusion plate 124 to move is arranged at one end of the top plate 132 close to the extrusion 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 in fitting and rolling connection with the surface of the extrusion plate 124.

[0051] As Figure 4 , Figure 5 and Figure 6As shown, when pressure pulsation occurs in the liquid outlet pipe 3, the pressure change is transmitted to the second piston plate 122 through the second connecting pipe 121. The second piston plate 122 slides in the second connecting pipe 121. The movement of the second piston plate 122 drives the second push rod 131 to slide synchronously in the second connecting pipe 121. The rotating rod 133 also moves with the movement of the second push rod 131. The rotating rod 133 drives the top plate 132 to rotate in the second connecting pipe 121 around its rotation point. As the top plate 132 rotates, the pressing member contacts the pressing plate 124 and applies pressure to it, pushing the pressing plate 124 to slide in the second connecting pipe 121 towards the airbag 123, thereby squeezing the airbag 123, and thus reducing the difficulty of the pressing plate 124 squeezing the airbag 123.

[0052] As Figure 4 , Figure 5 and Figure 6 shown, when the top plate 132 rotates, it drives the roller 135 to rotate. The roller 135 rolls on the surface of the pressing plate 124, converting the rotational motion of the top plate 132 into the linear motion of the pressing plate 124. The roller 135 and the pressing plate 124 have rolling friction, reducing the vibration generated by friction and at the same time improving the response speed.

[0053] As Figure 1 and Figure 4 shown, a roller 15 is rotatably connected to the inner wall of the left cavity 129. A second spring 16 and a pull rope 17 are also provided in the left cavity 129. One end of the second spring 16 is fixedly arranged on the inner wall of the second connecting pipe 121. The two ends of the pull rope 17 are respectively fixedly arranged at one end of the top plate 132 and the end of the second spring 16. The pull rope 17 is attached to the side wall of the roller 15, and the roller 15 guides the pull rope 17.

[0054] As Figure 1 and Figure 4 shown, when the pressure pulsation in the liquid outlet pipe 3 causes the second piston plate 122 to move, the second push rod 131 drives the top plate 132 to rotate around the fulcrum. The pull rope 17 at one end of the top plate 132 is stretched as the top plate 132 rotates, and the second spring 16 is stretched to store elastic potential energy. The roller 15 rotates to guide the movement direction of the pull rope 17 to ensure the stability of the force transmission path. The second spring 16 applies a reverse reset force to the top plate 132 through the pull rope 17; when the pressure pulsation weakens, the second spring 16 releases the elastic potential energy and drives the top plate 132 to rotate in the reverse direction through the pull rope 17. The pressing plate 124 is reset under the action of the rebounding force of the airbag 123, completing a buffering cycle; in addition, the second spring 16 provides a pre-tightening force, enabling the top plate 132 to quickly reset after the pressure pulsation disappears, avoiding secondary vibration; the second spring 16 can convert part of the pressure pulsation energy into elastic potential energy, reducing the system energy consumption.

[0055] As Figure 1 and Figure 4As shown in the figure, the adaptive adjustment component 14 includes an air collecting box 141, a connecting pipe 142, a third push rod 143, and a third connecting rod 144. The air collecting box 141 is fixedly installed on the outer side wall of the second connecting pipe 121. The two ends of the connecting pipe 142 are respectively communicated with the inner cavity of the airbag 123 and the air collecting box 141. One-way valves are installed on the side wall of the air collecting box 141 and the connecting pipe 142, and a one-way valve is also installed on the side wall of the airbag 123. A third piston plate 145 is slidably connected to the inner wall of the air collecting box 141. One end of the third push rod 143 penetrates and is slidably sealed through the side wall of the second connecting pipe 121 in the horizontal direction, and the other end of the third push rod 143 penetrates and is slidably sealed through the side wall of the air collecting box 141 in the horizontal direction. The end of the third push rod 143 located inside the air collecting box 141 is fixedly connected to the third piston plate 145. The two ends of the third connecting rod 144 are respectively hinged to the second push rod 131 and the third push rod 143.

[0056] As Figure 1 and Figure 4 shown in the figure, when the pressure pulsation of the liquid outlet pipe 3 increases, the second piston plate 122 slides in the second connecting pipe 121, and at the same time drives the second push rod 131 to move. The second push rod 131 drives the third connecting rod 144 to rotate, the third connecting rod 144 drives the third push rod 143 to move, and the third push rod 143 drives the third piston plate 145 to slide in the air collecting box 141. The air in the air collecting box 141 is pushed by the third piston plate 145 and injected into the airbag 123 through the one-way valve on the connecting pipe 142, and the volume of the airbag 123 increases; when the pressure decreases, the gas in the airbag 123 exhausts outward through its own one-way valve, and the volume of the airbag 123 decreases until the air pressure in the airbag 123 is the same as the external atmospheric pressure; thus, it is convenient to realize the real-time adjustment of the volume of the airbag 123.

[0057] As Figure 1 shown in the figure, a connecting plate 18 is fixedly connected to the bottom side wall of the pump body 1. A support plate 19 is arranged on the side of the connecting plate 18 close to the base 4. The support plate 19 abuts against the base 4. A plurality of third springs 20 are arranged between the connecting plate 18 and the support plate 19. The third springs 20 are arranged vertically, and the two ends of the third springs 20 are respectively fixedly connected to the opposite inner walls of the connecting plate 18 and the support plate 19.

[0058] As Figure 1 shown in the figure, when the diaphragm booster pump is working, the reciprocating movement of the diaphragm, the flow of the liquid, and the operation of the mechanical components will generate vibrations. These vibrations will be transmitted to the connected connecting plate 18 through the pump body 1; when the vibration of the pump body 1 causes the connecting plate 18 to move downward or upward, the third springs 20 are compressed or stretched, and the third springs 20 store elastic potential energy, slowing down its descending or ascending speed; through this compression and stretching process of the third springs 20, the vibration energy is continuously absorbed and released, thereby buffering the vibration of the pump body 1, and further reducing the noise caused by the vibration of the pump body 1.

[0059] AsFigure 1 and Figure 4 As shown in Figure 4 , a casing 21 and a second piston rod 22 are provided inside the third spring 20. Both the casing 21 and the second piston rod 22 are vertically arranged. One end of the casing 21 is fixedly connected to the bottom of the connecting plate 18, and one end of the second piston rod 22 is fixedly connected to the top of the support plate 19. The top end of the second piston rod 22 is slidably connected to the inner wall of the casing 21. A channel is formed in the connecting pipe 142. A liquid storage box 23 for storing damping liquid is fixedly installed on the bottom side wall of the pump body 1. A third connecting pipe 24 is provided between the liquid storage box 23 and the connecting plate 18. Two ends of the third connecting pipe 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 flows through the casing 21, the channel and the third connecting pipe 24. A ball valve 25 is installed on the third connecting pipe 24. A third driving assembly 26 for driving the valve body rotating shaft in the ball valve 25 is provided outside the pump body 1.

[0060] As Figure 1 and Figure 4 shown in Figure 1 and Figure 4 , when the pump body 1 vibrates due to liquid pulsation, the vibration is transmitted to the casing 21 and the second piston rod 22 inside the third spring 20 through the connecting plate 18. The vibration causes relative sliding between the casing 21 and the second piston rod 22. The damping liquid in the casing 21 flows under the extrusion of the second piston rod 22. The damping liquid flows into the liquid storage box 23 through the channel and the third connecting pipe 24. Viscous resistance is generated when the damping liquid flows in the channel. When liquid pulsation generates vibration, the third driving assembly 26 will be triggered. The third driving assembly 26 can drive the rotation of the valve body rotating shaft of the ball valve 25 according to the vibration intensity to change the opening degree of the ball valve 25. When strong vibration occurs, the third driving assembly 26 reduces the opening degree of the ball valve 25, increasing the flow resistance of the damping liquid, reducing the flow rate, enhancing the damping effect, increasing the system stiffness, and suppressing high-frequency vibration. When weak vibration occurs, the opening degree of the ball valve 25 increases, the liquid flows smoothly, the damping is reduced, and excessive damping is avoided.

[0061] As Figure 1 , Figure 4 and Figure 5 shown in Figure 1 , Figure 4 and Figure 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 passes through the top plate 132 and is fixedly connected to the bottom end of the second push rod 131. A second sliding groove 264 for the fourth push rod 261 to slide is formed horizontally on the top plate 132. The second rack 262 is vertically arranged on the outer side of the bottom of the second connecting 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 support rod 265 is fixedly connected to the outer side wall of the pump body 1. The second rotating rod 263 passes through and is rotatably connected to the support rod 265. One end of the second rotating rod 263 is fixedly connected to the rotating shaft of the valve body in the ball valve 25. A second gear 266 is sleeved and fixed at the other end of the second rotating rod 263. The second gear 266 meshes with the second rack 262.

[0062] As Figure 1 , Figure 4 and Figure 5 shown, the vibration generated during the operation of the diaphragm booster pump causes the piston plate II 122 and the push rod II 131 to slide within the connecting pipe II 121. The movement of the push rod II 131 synchronously drives the movement of the push rod IV 261. The movement of the push rod IV 261 causes the rack II 262 to also move in a straight line. When the rack II 262 moves in a straight line, it drives the gear II 266 to rotate. The rotation of the gear II 266 drives the rotating rod II 263 to rotate on the outer side wall of the pump body 1. The rotation of the rotating rod II 263 directly drives the rotation of the rotating shaft of the valve body within the ball valve 25, thereby changing the opening and closing degree of the ball valve 25; when the vibration intensity of the pump body 1 is greater, the opening and closing degree of the ball valve 25 decreases, reducing the flow rate of the damping liquid; when the vibration intensity decreases, the opening and closing degree of the ball valve 25 increases, increasing the flow rate of the damping liquid.

[0063] The implementation principle of the embodiment of this application is as follows: When the liquid flows from the external input pipeline through the Venturi tube 5 into the liquid suction cavity of the pump body 1, the Venturi tube 5 buffers the sudden change in water pressure through the contraction section of its throat. When the water pressure suddenly increases, the pressure change in the throat of the Venturi tube 5 drives the piston plate I 7 to move. The piston plate I 7 triggers the rotation of the blade 9 through the first driving component 10, increasing the blocking area of the blade 9 against the liquid, thereby reducing the impact force of the water flow on the pump body 1 and the pipeline system; at the same time, the pressure pulsation buffering mechanism 12 on the liquid outlet pipe 3 further buffers the pressure pulsation, stabilizes the liquid pressure, and reduces the vibration and noise of the pump body 1 through the linkage of the piston plate II 122, the airbag 123, and the extrusion plate 124; the base 4 further absorbs and releases vibration energy through the synergistic effect of the spring III 20 and the damping liquid, enhancing the vibration damping effect; the entire system effectively alleviates the impact of the sudden change in water pressure on the pump body 1 through a multi-stage buffering and vibration damping mechanism, reduces vibration and noise, and improves the operation stability and service life of the pump body 1.

[0064] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A diaphragm booster pump with a buffering noise reduction mechanism, comprising a pump body (1), a liquid inlet pipe (2), a liquid outlet pipe (3) and a base (4), characterized in that: A venturi tube (5) is installed in the liquid inlet pipe (2), and the inlet section of the venturi tube (5) is connected to the inlet of the liquid inlet pipe (2) so as to be connected to an external input pipeline; the outlet section of the venturi tube (5) is connected to the liquid suction chamber of the pump body (1); the throat of the venturi tube (5) is connected to a connecting tube (6), a piston plate (7) is slidably arranged in the connecting tube (6), a spring (8) is arranged in the connecting tube (6), and the two ends of the spring (8) are respectively fixedly arranged on the piston plate (7) and the side wall of the venturi tube (5); a blade (9) is rotatably arranged in the outlet section of the venturi tube (5), and a first driving component (10) for driving the blade (9) to rotate is arranged in the liquid inlet pipe (2); 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 push rod (109), one end of the piston rod (101) being fixedly arranged on the piston plate (7), the piston rod (101) slidingly moves in the connecting pipe (6), and one end of the piston rod (101) extending outside the connecting pipe (6); the rack (103) slidingly moves in the liquid inlet pipe (2), and the two ends of the connecting rod (102) are respectively hinged to the piston rod (101) and the rack (103); the rotating rod (105) is rotatably arranged on the liquid inlet pipe (2). The liquid pipe (2) is provided with one end of the rotating rod (105) passing through the outlet section of the Venturi tube (5), the gear (104) is fixedly arranged on the rotating rod (105), and the rack (103) is meshed with the gear (104); the rotating plate (106) is rotatably arranged in the outlet section of the Venturi tube (5), the rotating plate (106) is fixedly arranged on the rotating rod (105), the push rod (109) is fixedly arranged on the blade (9), the sliding rod (108) slides in the outlet section of the Venturi tube (5), the push rod (109) slides on the sliding rod (108), and the two ends of the connecting rod (107) are rotatably arranged on the rotating plate (106) and the sliding rod (108), respectively.

2. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 1, characterized in that: The liquid outlet pipe (3) is provided with a pressure pulsation buffer mechanism (12), the pressure pulsation buffer mechanism (12) comprising a second connecting pipe (121), a second piston plate (122), an airbag (123) and an extrusion plate (124), the second connecting pipe (121) being connected to the liquid outlet pipe (3), the second piston plate (122) being slidably connected to the inner cavity of the second connecting pipe (121), the airbag (123) being installed in the second connecting pipe (121), the extrusion plate (124) being slidably connected in the second connecting pipe (121), and the extrusion plate (124) being pressed against the airbag (123); the pressure pulsation buffer mechanism (12) further comprises a second driving component (13) for driving the extrusion plate (124) to squeeze the airbag (123) and an adaptive adjustment component (14) for adjusting the volume of the airbag (123).

3. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 2, characterized in that: The second driving assembly (13) comprises a second push rod (131), a top plate (132) and a second spring (16), one end of the second push rod (131) being fixedly arranged on the second piston plate (122), the second push rod (131) slidingly sliding in the second connecting pipe (121), one end of the first push rod (109) being fixedly arranged on the second piston plate (122), the top plate (132) being rotatably arranged in the second connecting pipe (121), a rotating rod (133) being rotatably arranged on the second push rod (131), the rotating rod (133) being rollingly arranged on one end of the top plate (132); a pressing member for pressing the extrusion plate (124) to move is arranged at one end of the top plate (132) close to the extrusion plate (124).

4. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 3, characterized in that: The pressing member is a roller shaft (135), the roller shaft (135) is rotatably arranged at one end of the top plate (132), and the roller shaft (135) is arranged in contact with and rolling on the extrusion plate (124).

5. The diaphragm booster pump with a buffering noise reduction mechanism according to claim 3, characterized in that: A roller (15) is rotatably arranged on the inner wall of the second connecting tube (121), and a spring (16) and a pull rope (17) are arranged inside the second connecting tube (121). One end of the second spring (16) is fixedly arranged on the inner wall of the second connecting tube (121), and two ends of the pull rope (17) are respectively fixedly arranged on one end of the top plate (132) and the end of the second spring (16). The pull rope (17) is attached to the side wall of the roller (15), and the roller (15) guides the pull rope (17).

6. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 3, characterized in that: The adaptive adjustment component (14) comprises an air collecting box (141), a connecting pipe (142), a push rod three (143) and a connecting rod three (144); the air collecting box (141) is mounted on the outer side wall of the connecting pipe two (121); the two ends of the connecting pipe (142) are respectively connected to the air bag (123) and the inner cavity of the air collecting box (141); the side wall of the air collecting box (141) and the upper surface of the connecting pipe (142) are connected to each other. Both are equipped with a one-way valve, and a one-way valve is also installed on the side wall of the airbag (123); the inner wall of the air collecting box (141) is slidably connected to the piston plate three (145), the push rod three (143) slides on the air collecting box (141), and one end of the push rod three (143) is fixedly arranged on the piston plate three (145); the two ends of the connecting rod three (144) are respectively hinged to the push rod two (131) and the push rod three (143).

7. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 6, characterized in that: A connecting plate (18) is fixedly provided on the bottom side wall of the pump body (1); a support plate (19) is provided on a side of the connecting plate (18) close to the base (4); the support plate (19) abuts against the base (4); a plurality of springs (20) are provided between the connecting plate (18) and the support plate (19); two ends of the springs (20) are fixedly provided on the connecting plate (18) and the support plate (19), respectively.

8. The diaphragm booster pump with a buffering noise reduction mechanism according to claim 7, characterized in that: The spring (20) is provided with a sleeve (21) and a piston rod (22), one end of the sleeve (21) is fixedly arranged on the connecting plate (18), one end of the piston rod (22) is fixedly arranged on the supporting plate (19), and one end of the piston rod (22) is slidably connected to the inner wall of the sleeve (21); a channel is provided in the connecting pipe (142), and a liquid storage box (23) for storing damping liquid is provided on the side wall of the pump body (1), and the liquid storage box (23) is connected to the inner wall of the pump body (1). A connecting pipe (24) is provided between the connecting plates (18), and the two ends of the connecting pipe (24) are respectively connected to the inner cavity of the liquid storage box (23) and the inner cavity of the channel in the connecting pipe (142), and damping liquid flows through the sleeve (21), the channel and the connecting pipe (24); a ball valve (25) is installed on the connecting pipe (24), and a third driving component (26) for driving the valve body rotating shaft in the ball valve (25) is provided outside the pump body (1).

9. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 8, characterized in that: The third driving assembly (26) comprises a push rod four (261), a rack two (262) and a rotating rod two (263), one end of the push rod four (261) is fixedly arranged on the push rod two (131), one end of the rack two (262) is fixedly arranged on the push rod four (261), the rotating rod two (263) is rotatably arranged on the outer wall of the pump body (1), and one end of the rotating rod two (263) is fixedly arranged on the rotating shaft of the valve body inside the ball valve (25), and a gear two (266) is fixedly arranged on the rotating rod two (263), and the gear two (266) is meshed with the rack two (262).

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