Diaphragm booster pump with buffer noise reduction mechanism

Abstract

The invention discloses a diaphragm booster pump with a buffer noise reduction mechanism, and belongs to the technical field of diaphragm booster pumps, the diaphragm booster pump comprises a pump body, a liquid inlet pipe, a liquid outlet pipe and a base, a Venturi pipe is mounted in the liquid inlet pipe, and an inlet section of the Venturi pipe is connected to an inlet of the liquid inlet pipe so as to be connected with an external input pipeline; the outlet section of the venturi tube is communicated with the liquid suction cavity of the pump body; a throat part in the venturi tube is communicated with a communicating pipe I, a piston plate I slides in the communicating pipe I, a spring I is arranged in the communicating pipe I, and the two ends of the spring I are fixedly arranged on the piston plate I and the side wall of the venturi tube respectively; blades are rotationally arranged in the outlet section of the Venturi tube, and a first driving assembly used for driving the blades to rotate is arranged in the liquid inlet tube. The diaphragm booster pump has the effects that vibration and noise generated when the diaphragm booster pump works are reduced, so that the service life of equipment is prolonged, and the operation stability of the equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of diaphragm booster pumps, and in particular to a diaphragm booster pump with a buffering noise reduction mechanism. Background Art

[0002] The diaphragm booster pump is a device that achieves liquid pressure boosting through the reciprocating motion of the diaphragm. Its working principle is to use a motor or pneumatic drive to deform the diaphragm, periodically compress the pump chamber volume, and thus increase the medium pressure. The pump has the characteristics of strong sealing, low noise, and good corrosion resistance. It is suitable for water treatment, industrial equipment, automobile manufacturing, household boosting and other fields, especially for conveying liquids containing particles or corrosiveness.

[0003] In the prior art, a diaphragm booster pump comprises a pump body, with a liquid inlet pipe and a liquid outlet pipe connected to both sides of the pump body respectively, and the pump body is fixed on a base by bolts; however, when a valve on the liquid inlet pipe or a valve on the liquid outlet pipe is suddenly closed, the flow of liquid is blocked, which will cause the pressure to rise rapidly, or when the liquid flow rate suddenly increases, the flow rate accelerates, which will also cause the pressure to rise. The sudden increase in pressure will cause the pump body and the piping system to vibrate, and the vibration will cause noise, affecting the operating stability and service life of the equipment. Summary of the invention

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

[0005] The present application provides a diaphragm booster pump with a buffer noise reduction mechanism, which adopts the following technical solution: A diaphragm booster pump with a buffering noise reduction mechanism comprises a pump body, a liquid inlet pipe, a liquid outlet pipe and a base, wherein a venturi tube is installed in the liquid inlet pipe, and 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 is connected to the suction chamber of the pump body; the throat of the venturi tube is connected to a connecting tube 1, a piston plate 1 slides in the connecting tube 1, a spring 1 is provided in the connecting tube 1, and the two ends of the spring 1 are respectively fixedly arranged on the piston plate 1 and the side wall of the venturi tube; a blade is rotatably provided in the outlet section of the venturi tube, and a first driving component for driving the blade to rotate is provided in the liquid inlet pipe.

[0006] By adopting the above technical solution, the liquid flows from the external input pipe through the Venturi tube into the suction chamber of the pump body. When the liquid in the liquid inlet pipe enters the contraction section of the Venturi tube, the flow rate of the liquid will gradually increase and the pressure of the liquid will gradually decrease due to the gradual decrease in the cross-sectional area of ​​the pipe. 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 reducing the pressure, thereby avoiding excessive pressure from directly acting on the pump body. The throat of the Venturi tube is the part with the smallest cross-sectional area. The flow rate of the liquid in the throat reaches the maximum value and the pressure reaches the minimum value. The relatively small cross-sectional area and stable flow rate of 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. The cross-sectional area of ​​the diffusion section gradually increases, the flow rate of the liquid will gradually decrease, and the pressure of the liquid will gradually increase, so that the lower pressure in the throat gradually recovers to a suitable level, so that the liquid can enter the suction chamber of the pump body at a relatively stable pressure.

[0007] The venturi tube buffers sudden water pressure changes through the contraction section, provides a stable flow state at the throat, and restores and fine-tunes the liquid pressure at the diffusion section, thereby effectively alleviating the sudden water pressure changes and stabilizing the pressure of the liquid entering the pump body; thereby reducing the impact of sudden water pressure changes on the pump body, reducing the vibration and noise of the pump body, extending the service life of the pump body, and improving the working efficiency and stability of the pump body.

[0008] When the diaphragm booster pump is in normal working condition, the pressure at the throat of the Venturi tube is relatively stable, the piston plate 1 is in the initial position under the action of the spring 1, the first drive assembly does not move, the blades are in the initial diversion state, the obstruction to the flow of liquid is small, and the liquid can enter the pump body relatively smoothly; when a sudden pressure change occurs in the suction chamber of the pump body, resulting in a sudden decrease in the liquid flow in the liquid inlet pipe or a sudden increase in pressure, the pressure at the throat of the Venturi tube will also increase accordingly, and the increased pressure will push the piston plate 1 to overcome the elastic force of the spring 1, and slip in the connecting pipe 1. The movement of the piston plate 1 triggers the first drive assembly, and the first drive assembly drives the blades in the outlet section of the Venturi tube to rotate. After the blades rotate, the blocking area for the liquid is increased, the flow direction and speed of the liquid are changed, and the impact force of the water flow on the pump body and the pipeline system is reduced; 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, the vibration amplitude of the pump body is reduced, and the noise is further reduced.

[0009] Preferably, the first driving assembly comprises a piston rod 1, a connecting rod 1, a rack 1, a gear 1, a rotating rod 1, a rotating plate, a connecting rod 2, a sliding rod and a push rod 1, one end of the piston rod 1 is fixedly arranged on the piston plate 1, the piston rod 1 slides in the connecting pipe 1, and one end of the piston rod 1 extends outside the connecting pipe 1; the rack 1 slides in the liquid inlet pipe, and the two ends of the connecting rod 1 are respectively hinged to the piston rod 1 and the rack 1; the rotating rod 1 is rotatably arranged in the liquid inlet pipe , and one end of the rotating rod 1 is passed through the outlet section of the Venturi tube, the gear 1 is fixedly arranged on the rotating rod 1, and the rack 1 is meshed with the gear 1; the rotating plate is rotatably arranged in the outlet section of the Venturi tube, the rotating plate is fixedly arranged on the rotating rod 1, the push rod 1 is fixedly arranged on the blade, the sliding rod slides in the outlet section of the Venturi tube, the push rod 1 slides on the sliding rod, and the two ends of the connecting rod 2 are rotatably arranged on the rotating plate and the sliding rod respectively.

[0010] By adopting the above technical solution, when the pressure in the throat of the Venturi tube increases, the increased pressure will push the piston plate 1 to slide in the connecting tube 1 against the elastic force of the spring 1, and the movement of the piston plate 1 will drive the piston rod 1 to slide in the connecting tube 1 synchronously, the piston rod 1 drives the connecting rod 1 to rotate, the connecting rod 1 pushes the rack 1 to move, the sliding of the rack 1 drives the gear 1 to rotate, the gear 1 drives the rotating rod 1 to rotate, the rotation of the rotating rod 1 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 connecting rod 2, and the sliding rod pushes the rotating plate 1 to rotate in the outlet section of the Venturi tube. Push rod 1 moves, and push rod 1 drives the blade to rotate, thereby increasing the blade's blocking area for the liquid; when the pressure in the throat of the Venturi tube returns to normal, the elastic force of spring 1 will reset piston plate 1, and through the reverse movement of the above series of mechanical structures, the blade will also return to the initial diversion state; the whole process enables the blade to adjust the degree of blocking the liquid according to the degree of change of throat pressure, so as to achieve the regulation of water flow, effectively buffer the sudden change of water pressure, reduce the vibration amplitude of the pump body, thereby reducing the noise generated by vibration, and improving the operating environment of the pump body.

[0011] Preferably, a pressure pulsation buffer mechanism is provided on the liquid outlet pipe, and the pressure pulsation buffer mechanism includes a connecting pipe 2, a piston plate 2, an airbag and an extrusion plate. The connecting pipe 2 is connected to the liquid outlet pipe, the piston plate 2 is slidably connected to the inner cavity of the connecting pipe 2, the airbag is installed in the connecting pipe 2, the extrusion plate slides in the connecting pipe 2, and the extrusion plate squeezes the airbag; the pressure pulsation buffer mechanism also includes a second driving component for driving the extrusion plate to squeeze the airbag and an adaptive adjustment component for adjusting the volume of the airbag.

[0012] By adopting the above technical solution, when the diaphragm booster pump is working, the liquid pressure in the liquid outlet pipe will pulsate, and the pressure pulsation will be transmitted to its inner cavity through the connecting pipe 2, generating a force on the piston plate 2. When the pressure pulsation is transmitted to the connecting pipe 2, the change in pressure will push the piston plate 2 to slide in the inner cavity of the connecting pipe 2; when the pressure increases, the second driving component will be triggered when the piston plate 2 moves, and the second driving component drives the extrusion plate to squeeze the airbag; the gas in the airbag is compressed, and the airbag absorbs part of the energy brought by the pressure pulsation, thereby 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 component 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 component 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 higher rigidity is subjected to rapid pressure changes, the deformation amount is smaller, ensuring a rapid response during high-frequency pulsation, while reducing secondary vibration caused by excessive deformation of the airbag.

[0013] Preferably, the second driving assembly includes a push rod 2, a top plate and a spring 2, one end of the push rod 2 is fixedly arranged on the piston plate 2, the push rod 2 slides in the connecting pipe 2, one end of the push rod 1 is fixedly arranged on the piston plate 2, the top plate is rotatably arranged in the connecting pipe 2, a rotating rod is rotatably arranged on the push rod 2, and the rotating rod is rollingly arranged on one end of the top plate; a pressing member for pressing the extrusion plate to move is arranged at one end of the top plate close to the extrusion plate.

[0014] By adopting the above technical solution, when pressure pulsation occurs in the liquid outlet pipe, the pressure change will be transmitted to the piston plate two through the connecting pipe two, and the piston plate two will slide in the connecting pipe two. The movement of the piston plate two will drive the push rod two to slide synchronously in the connecting pipe two, and the rotating rod will also move with the movement of the push rod two. The rotating rod drives the top plate to rotate around its rotation point in the connecting pipe two. As the top plate rotates, the pressing piece will contact the extrusion plate and apply pressure to it, pushing the extrusion plate to slide in the connecting pipe two toward the direction of the airbag, and then extruding the airbag, thereby reducing the difficulty of the extrusion plate extruding the airbag.

[0015] Preferably, the pressing member is a roller shaft, the roller shaft is rotatably arranged at one end of the top plate, and the roller shaft is closely attached to and rollingly arranged on the extrusion plate.

[0016] By adopting the above technical solution, when the top plate rotates, the roller is driven to rotate, and the roller rolls against the surface of the extrusion plate, converting the rotational motion of the top plate into linear motion of the extrusion plate. There is rolling friction between the roller and the extrusion plate, which reduces the vibration caused by friction and improves the response speed.

[0017] Preferably, a roller is rotatably provided on the inner wall of the connecting tube 2, and a spring 2 and a pull rope are provided in the connecting tube 2. One end of the spring 2 is fixedly provided on the inner wall of the connecting tube 2, and both ends of the pull rope are respectively fixedly provided on one end of the top plate and the end of the spring 2. The pull rope is attached to the side wall of the roller, and the roller guides the pull rope.

[0018] By adopting the above technical solution, when the pressure pulsation of the liquid outlet pipe causes the piston plate 2 to move, the push rod 2 drives the top plate to rotate around the fulcrum, and the pull rope at one end of the top plate is stretched as the top plate rotates, the spring 2 is stretched to store elastic potential energy, and the roller rotates to guide the movement direction of the pull rope to ensure the stability of the force transmission path, and the spring 2 applies a reverse reset force to the top plate through the pull rope; when the pressure pulsation weakens, the spring 2 releases the elastic potential energy and drives the top plate to rotate in the opposite direction through the pull rope, and the extrusion plate resets under the action of the rebound force of the airbag, completing a buffer cycle; in addition, the spring 2 provides a preload force to enable the top plate to quickly reset after the pressure pulsation disappears, thereby avoiding secondary vibration; the spring 2 can convert part of the pressure pulsation energy into elastic potential energy, thereby reducing the energy consumption of the system.

[0019] Preferably, the adaptive adjustment component includes an air collecting box, a connecting pipe, a push rod three and a connecting rod three. The air collecting box is installed on the outer wall of the connecting pipe two, and the two ends of the connecting pipe are respectively connected to the airbag and the inner cavity of the air collecting box. A one-way valve is 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; the inner wall of the air collecting box is slidably connected with a piston plate three, the push rod three slides on the air collecting box, and one end of the push rod three is fixedly arranged on the piston plate three; the two ends of the connecting rod three are respectively hinged to the push rod two and the push rod three.

[0020] By adopting the above technical scheme, when the pressure pulsation of the liquid outlet pipe increases, the piston plate 2 slides in the connecting pipe 2, and at the same time drives the push rod 2 to move, the push rod 2 drives the connecting rod 3 to rotate, the connecting rod 3 drives the push rod 3 to move, and the push rod 3 drives the piston plate 3 to slide in the air collecting box. The air in the air collecting box is pushed by the piston plate 3 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 is exhausted to the outside 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; thereby facilitating the real-time adjustment of the volume of the airbag.

[0021] Preferably, a connecting plate is fixedly provided on the bottom side wall of the pump body, a support plate is provided on the side of the connecting plate close to the base, the support plate abuts against the base, a plurality of springs three are provided between the connecting plate and the support plate, and the two ends of the spring three are respectively fixedly provided on the connecting plate and the support plate.

[0022] By adopting the above technical solution, when the diaphragm booster pump is working, the reciprocating motion of the diaphragm, the flow of liquid and the operation of mechanical parts will generate vibrations, and these vibrations will be transmitted to the connecting plate connected to it through the pump body; when the vibration of the pump body causes the connecting plate to move downward or upward, the spring three is compressed or stretched, and the spring three stores elastic potential energy to slow down its descending or ascending speed; through this compression and stretching process of the spring three, the vibration energy is continuously absorbed and released, thereby buffering the vibration of the pump body, thereby further reducing the noise caused by the vibration of the pump body.

[0023] Preferably, a sleeve and a piston rod 2 are provided in the spring 3, one end of the sleeve is fixedly arranged on the connecting plate, one end of the piston rod 2 is fixedly arranged on the supporting plate, and one end of the piston rod 2 is slidably connected to the inner wall of the sleeve; a channel is opened in the connecting tube, a liquid storage box for storing damping liquid is provided on the side wall of the pump body, a connecting tube 3 is provided between the liquid storage box and the connecting plate, two ends of the connecting tube 3 are respectively connected to the inner cavity of the liquid storage box and the inner cavity of the channel in the connecting tube, and damping liquid flows in the sleeve, the channel and the connecting tube 3; a ball valve is installed on the connecting tube 3, and a third driving component for driving the valve body rotating shaft in the ball valve is provided outside the pump body.

[0024] By adopting the above technical solution, when the pump body vibrates due to liquid pulsation, the vibration is transmitted to the sleeve and piston rod 2 in the spring through the connecting plate, and the vibration causes the sleeve and piston rod 2 to slide relative to each other, and the damping liquid in the sleeve flows under the squeezing of piston rod 2, and the damping liquid flows into the liquid storage box through the channel and connecting pipe 3; the damping liquid generates viscous resistance when flowing in the channel, and the third drive component is triggered when the liquid pulsation generates vibration. The third drive component can drive the ball valve body shaft to rotate according to the vibration intensity to change the opening and closing degree of the ball valve; when the vibration is strong, the third drive component reduces the opening and closing degree of the ball valve, so that the flow resistance of the damping liquid increases, the flow velocity decreases, the damping effect is enhanced, the system stiffness increases, and high-frequency vibrations are suppressed; when the vibration is weak, the opening and closing degree of the ball valve increases, the liquid flows smoothly, the damping is reduced, and excessive damping is avoided.

[0025] Preferably, the third driving assembly includes a push rod four, a rack two and a rotating rod two, one end of the push rod four is fixedly set on the push rod two, one end of the rack two is fixedly set on the push rod four, the rotating rod two is rotatably set on the outer wall of the pump body, and one end of the rotating rod two is fixedly set on the rotating shaft of the valve body inside the ball valve, and a gear two is fixedly set on the rotating rod two, and the gear two is meshed with the rack two.

[0026] By adopting the above technical solution, the vibration generated when the diaphragm booster pump is working will cause the piston plate 2 and the push rod 2 to slide in the connecting pipe 2, and the movement of the push rod 2 will synchronously drive the push rod 4 to move, and the movement of the push rod 4 will cause the rack 2 to also make a linear motion. When the rack 2 makes a linear motion, it will drive the gear 2 to rotate, and the rotation of the gear 2 will drive the rotating rod 2 to rotate on the outer wall of the pump body. The rotation of the rotating rod 2 will directly drive the rotating shaft of the valve body in the ball valve to rotate, 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 is reduced, 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.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. When liquid flows from the external input pipe into the Venturi tube in the liquid inlet pipe, if the water pressure suddenly rises, the liquid flows into the contraction section of the Venturi tube, the flow rate increases and the pressure decreases; the pressure in the throat of the Venturi tube increases accordingly, pushing the piston plate 1 to overcome the elastic force of the spring 1 and causing the piston plate 1 to slide in the connecting pipe 1; the sliding of the piston plate 1 can drive the rotating plate to rotate, and the rotating plate drives the sliding rod to slide in the outlet section of the Venturi tube through the connecting rod 2, the sliding rod pushes the push rod 1 to move, and the push rod 1 drives the blade to rotate; the contraction section, throat and diffusion section of the Venturi tube cooperate with each other to effectively alleviate the sudden change in water pressure and stabilize the pressure of the liquid entering the pump body; and after the blades rotate, the blocking area for the liquid is increased, the flow direction and speed of the liquid are changed, the impact of the water flow on the pump body and the pipeline system is reduced, the vibration amplitude of the pump body is reduced, the noise is further reduced, and the impact of the sudden change in water pressure on the pump body is reduced, the service life of the pump body is extended, and the working efficiency and stability of the pump body are improved; 2. When the diaphragm booster pump is working, the liquid pressure in the liquid outlet pipe pulsates, and the pressure pulsation is transmitted to its inner cavity through the connecting pipe 2, pushing the piston plate 2 to slide in the inner cavity of the connecting pipe 2; the movement of the piston plate 2 triggers the second drive assembly, and the second drive assembly drives the top plate to rotate, so that the roller at one end of the top plate rolls against the surface of the extrusion plate, pushing the extrusion plate to squeeze the airbag; at the same time, when the push rod 2 moves, it can simultaneously drive the piston plate 3 to slide in the air collecting box, and the air in the air collecting box is pushed by the piston plate 3 and injected into the airbag through the one-way valve on the connecting pipe, so that the volume of the airbag increases; when the pressure When the pressure decreases, the gas in the airbag is exhausted outward through its own one-way valve, and the volume of the airbag decreases; when the airbag is squeezed, it absorbs part of the energy brought by the pressure pulsation, plays a role in buffering the pressure pulsation, makes the pressure of the output liquid more stable, and reduces 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. When the pressure pulsation is large, the airbag volume is increased to absorb more energy, and the rigidity of the airbag is increased at the same time, reducing the secondary vibration caused by excessive deformation of the airbag, ensuring a rapid response to high-frequency pulsation; 3. When the diaphragm booster pump vibrates due to liquid pulsation, the spring three is compressed or stretched, and the spring three continuously absorbs and releases vibration energy, which buffers the vibration of the pump body and reduces the noise caused by the vibration of the pump body; the sleeve in the spring three and the piston rod two slide relative to each other due to vibration, and the damping liquid in the sleeve flows under the extrusion of the piston rod two, and flows into the liquid storage box through the channel in the connecting pipe and the connecting pipe three; at the same time, when the outlet pipe pulsates due to liquid pressure, 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 is reduced, and the flow speed of the damping liquid is slowed down, which enhances the damping effect and suppresses high-frequency vibration; when the vibration intensity decreases, the opening and closing degree of the ball valve increases, and the flow speed of the damping liquid is faster, which avoids excessive damping and further improves the stability and reliability of the pump body operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic diagram of the structure of the Venturi tube in the embodiment of the present application; Figure 3 is a schematic diagram of the structure of the blades highlighted in the embodiment of the present application; Figure 4 is a schematic diagram of the structure of the airbag in an embodiment of the present application; Figure 5 yes Figure 4 The enlarged view of point A in the middle; Figure 6 yes Figure 4 Enlarged view of point B in the middle.

[0029] Description of reference numerals: 1. Pump body; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Base; 5. Venturi tube; 6. Connecting pipe 1; 7. Piston plate 1; 8. Spring 1; 9. Blade; 10. First drive assembly; 101. Piston rod 1; 102. Connecting rod 1; 103. Rack 1; 104. Gear 1; 105. Rotating rod 1; 106. Rotating plate; 107. Connecting rod 2; 108. Sliding rod; 109. Push rod 1; 110. Guide rod; 111. Guide block; 112. Slide 1; 12. Pressure pulsation buffer mechanism; 121. Connecting pipe 2; 122. Piston plate 2; 123. Air bag; 124. Extrusion plate; 125. Partition 1; 126. Upper cavity; 128. Partition 2; 129. Left cavity; 13 0. Right cavity; 13. Second drive assembly; 131. Push rod 2; 132. Top plate; 133. Rotating rod; 134. Guide plate; 135. Roller; 14. Adaptive adjustment assembly; 141. Gas collecting box; 142. Connecting pipe; 143. Push rod 3; 144. Connecting rod 3; 145. Piston plate 3; 15. Roller; 16. Spring 2; 17. Pull rope; 18. Connecting plate; 19. Support plate; 20. Spring 3; 21. Sleeve; 22. Piston rod 2; 23. Liquid storage box; 24. Connecting pipe 3; 25. Ball valve; 26. Third drive assembly; 261. Push rod 4; 262. Rack 2; 263. Rotating rod 2; 264. Slide 2; 265. Support rod; 266. Gear 2. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-6 This application is described in further detail.

[0031] The present application embodiment discloses a diaphragm booster pump with a buffer noise reduction mechanism, such as Figure 1 and Figure 2 As shown, it includes a pump body 1, a liquid inlet pipe 2, a liquid outlet pipe 3 and a base 4. A venturi tube 5 is installed in the liquid inlet pipe 2. The inlet section of the venturi tube 5 is connected to the inlet of the liquid inlet pipe 2 to connect to an external input pipeline; the outlet section of the venturi tube 5 is connected to the liquid suction cavity of the pump body 1; the throat of the venturi tube 5 is connected to a connecting pipe 6.

[0032] like Figure 2 and Figure 3 As shown, a piston plate 7 slides in the connecting pipe 6, a spring 8 is provided in the connecting pipe 6, and both ends of the spring 8 are fixedly connected to the piston plate 7 and the side wall of the venturi tube 5 respectively; a plurality of blades 9 are arranged in the outlet section of the venturi tube 5 in rotation along its circumferential direction, one end of the blade 9 is fixedly connected to a connecting column, and the connecting column is rotatably connected to the inner wall of the venturi tube 5; a first driving component 10 for driving the blade 9 to rotate is provided in the liquid inlet pipe 2.

[0033] like Figure 1 and Figure 2As shown, the liquid flows from the external input pipe through the venturi tube 5 into the suction chamber of the pump body 1. When the liquid in the liquid inlet pipe 2 enters the contraction section of the venturi tube 5, the flow rate of the liquid will gradually increase and the pressure of the liquid will gradually decrease due to the gradual decrease in the cross-sectional area of ​​the pipe. 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 reducing the pressure, thereby avoiding excessive pressure from directly acting on the pump body 1. The throat of the venturi tube 5 is the part with the smallest cross-sectional area. The flow rate of the liquid in the throat reaches the maximum value and the pressure reaches the minimum value. The relatively small cross-sectional area and stable flow rate of the throat make the liquid form a relatively stable flow state in the throat. After the liquid flows out of the throat, it enters the diffusion section. The cross-sectional area of ​​the diffusion section gradually increases, the flow rate of the liquid will gradually decrease, and the pressure of the liquid will gradually increase, so that the lower pressure in the throat gradually recovers to a suitable level, so that the liquid can enter the suction chamber of the pump body 1 at a relatively stable pressure.

[0034] like Figure 1 and Figure 2 As shown, the venturi tube 5 buffers the sudden change in water pressure through the contraction section, provides a stable flow state at the throat, and restores and fine-tunes the liquid pressure at the diffusion section, thereby effectively alleviating the sudden change in water pressure and stabilizing the pressure of the liquid entering the pump body 1; thereby reducing the impact of the sudden change in water pressure on the pump body 1, reducing the vibration and noise of the pump body 1, extending the service life of the pump body 1, and improving the working efficiency and stability of the pump body 1.

[0035] like Figure 2 and Figure 3 As shown, when the diaphragm booster pump is in normal working state, the pressure at the throat of the venturi tube 5 is relatively stable, the piston plate 7 is in the initial position under the action of the spring 8, the first drive assembly 10 does not move, the blade 9 is in the initial diversion state, the obstruction to the flow of liquid is small, and the liquid can enter the pump body 1 relatively smoothly; when a sudden pressure change occurs in the suction chamber of the pump body 1, resulting in a sudden decrease in the liquid flow rate in the liquid inlet pipe 2 or a sudden increase in the pressure, the pressure at the throat of the venturi tube 5 will also increase accordingly, and the increased pressure will push the piston plate 7 to overcome the elastic force of the spring 8 and slip in the connecting pipe 6. The movement of the piston plate 7 triggers the first drive assembly 10, and the first drive assembly 10 drives the blade 9 in the outlet section of the venturi tube 5 to rotate. After the blade 9 rotates, the blocking area for the liquid is increased, the flow direction and speed of the liquid are changed, and the impact force of the water flow on the pump body 1 and the pipeline system is reduced; 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, the vibration amplitude of the pump body 1 is reduced, and the noise is further reduced.

[0036] like Figure 2 and Figure 3As shown, the first driving assembly 10 includes 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 is fixedly connected to the piston plate 7, the piston rod 101 slides in the connecting pipe 6, and one end of the piston rod 101 extends to the outside of the connecting pipe 6; the rack 103 slides in the inlet pipe 2 along the axial direction. In the liquid pipe 2, a guide rod 110 is fixedly arranged on the inner wall of the liquid inlet pipe 2, and 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 rack 103, and the guide rod 110 is passed through and slides on the guide block 111; 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 arranged in the liquid inlet pipe 2, and one end of the rotating rod 105 is passed through the outlet section of the venturi tube 5, and the rotating rod 105 is arranged in the liquid inlet pipe 2. The rod 105 is rotatably sealed to the side wall of the venturi tube 5; the gear 104 is sleeved and fixed to the end of 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, and the rotating plate 106 is fixedly connected to one end of the rotating rod 105 located in the venturi tube 5; a plurality of push rods 109 are arranged, and the plurality of push rods 109 are arranged one by one with the plurality of blades 9, and one end of the push rod 109 is fixedly arranged at On the surface side wall of the blade 9; the sliding rod 108 is in a circular ring shape, and 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, and the inner side wall of the sliding rod 108 is provided with a sliding groove 112 for the push rod 109 to slide along the circumferential direction of the sliding rod 108; the two ends of the 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.

[0037] like Figure 2 and Figure 3As shown, when the throat pressure of the venturi tube 5 increases, the increased pressure will push the piston plate 7 to slide in the connecting tube 6 to overcome the elastic force of the spring 8, and the movement of the piston plate 7 will drive the piston rod 101 to slide in the connecting tube 6 synchronously, the piston rod 101 drives the connecting rod 102 to rotate, the connecting rod 102 drives 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 in the outlet section of the venturi tube 5, and the rotation of the rotating plate 106 will drive the sliding rod 108 in the venturi through the connecting rod 107. The slide bar 108 pushes the push rod 109 to move, and the push rod 109 drives the blade 9 to rotate, thereby increasing the blocking area of ​​the blade 9 to the liquid; when the throat pressure of the Venturi tube 5 returns to normal, the elastic force of the spring 8 will reset the piston plate 7, and 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 degree of change of the throat pressure, so as to achieve the regulation of the water flow, effectively buffer the sudden change of water pressure, reduce the vibration amplitude of the pump body 1, and then reduce the noise generated by vibration, and improve the operating environment of the pump body 1.

[0038] like Figure 1 and Figure 4 As shown, the outlet pipe 3 is provided with a pressure pulsation buffer mechanism 12, which includes a connecting pipe 121, a piston plate 122, an air bag 123 and an extrusion plate 124. The connecting pipe 121 is connected to the inner cavity of the outlet pipe 3, the piston plate 122 is located in the connecting pipe 121 near the outlet pipe 3, and the piston plate 122 is slidably connected to the inner wall of the connecting pipe 121. The inner wall of the connecting pipe 121 is fixedly connected with a partition 125, which is horizontally arranged. The partition 125 divides the inner cavity of the connecting pipe 121 into an upper cavity 126 and an air bag 123. The lower cavity, the inner wall of the lower cavity of the connecting tube 121 is fixedly connected with a partition 128, the partition 128 is vertically arranged, and the partition 128 divides the lower cavity of the connecting tube 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 tube 121, and the extrusion plate 124 slides in the vertical direction and squeezes the airbag 123; the pressure pulsation buffer mechanism 12 also includes 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.

[0039] like Figure 1 and Figure 4As shown, when the diaphragm booster pump is working, the liquid pressure in the liquid outlet pipe 3 will pulsate, and the pressure pulsation will be transmitted to its inner cavity through the connecting pipe 121, generating a force on the piston plate 122. When the pressure pulsation is transmitted to the connecting pipe 121, the change in pressure will push the piston plate 122 to slide in the inner cavity of the connecting pipe 121; when the pressure increases, the movement of the piston plate 122 will trigger the second drive assembly 13, and the second drive assembly 13 will drive the extrusion plate 124 to squeeze the airbag 123; the gas in the airbag 123 is compressed, and the airbag 123 absorbs part of the energy brought by the pressure pulsation, thereby playing a role in buffering the pressure pulsation. The adaptive adjustment component 14 automatically adjusts the volume and rigidity of the airbag 123 according to the specific situation of the pressure pulsation. When the pressure pulsation is large, the adaptive adjustment component 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 is increased, and its ability to resist deformation is enhanced. The airbag 123 with higher rigidity will deform less when subjected to rapid pressure changes, ensuring a rapid response during high-frequency pulsation, while reducing secondary vibration caused by excessive deformation of the airbag 123.

[0040] like Figure 4 , Figure 5 and Figure 6 As shown, the second driving assembly 13 includes a push rod 131 and a top plate 132. The push rod 131 is vertically arranged, and the top end of the push rod 131 is fixedly connected to the piston plate 122. The push rod 131 vertically slides in the upper cavity 126, and the bottom end of the push rod 131 is penetrated through the partition 125 and extends into the lower cavity; the top plate 132 is penetrated through the partition 128, and a rotating shaft is penetrated at the center of the top plate 132, and the rotating shaft is rotatably connected to the side wall of the partition 128. The two ends of the top plate 132 are respectively located in the left cavity 129 and the right cavity 130. A rotating rod 133 is passed through the bottom end of the push rod 131 and is rotatably connected thereto; a guide plate 134 is fixedly connected to one side of the top plate 132 close to the push rod 131; the rotating rod 133 passes through and slides on the side wall of the guide plate 134; the rotating rod 133 is rollingly connected to the side wall of the guide plate 134; a pressing member for pressing the extrusion plate 124 to move is provided at one end of the top plate 132 close to the extrusion plate 124; the pressing member is a roller 135, which is rotatably connected to one end of the top plate 132, and the roller 135 is in contact with and rollingly connected to the surface of the extrusion plate 124.

[0041] like Figure 4 , Figure 5 and Figure 6As shown, when pressure pulsation occurs in the liquid outlet pipe 3, the pressure change will be transmitted to the piston plate 122 through the connecting tube 121, and the piston plate 122 will slide in the connecting tube 121. The movement of the piston plate 122 will drive the push rod 131 to slide synchronously in the connecting tube 121, and the rotating rod 133 will also move with the movement of the push rod 131. The rotating rod 133 drives the top plate 132 to rotate around its rotation point in the connecting tube 121. With the rotation of the top plate 132, the pressing member will contact the extrusion plate 124 and apply pressure to it, pushing the extrusion plate 124 to slide in the connecting tube 121 toward the direction of the airbag 123, and then extruding the airbag 123, thereby reducing the difficulty of the extrusion plate 124 extruding the airbag 123.

[0042] like Figure 4 , Figure 5 and Figure 6 As shown, when the top plate 132 rotates, the roller 135 is driven to rotate, and the roller 135 rolls against the surface of the extrusion plate 124, converting the rotational motion of the top plate 132 into the linear motion of the extrusion plate 124. There is rolling friction between the roller 135 and the extrusion plate 124, which reduces the vibration caused by friction and improves the response speed.

[0043] like Figure 1 and Figure 4 As shown, a roller 15 is rotatably connected to the inner wall of the left cavity 129. A spring 16 and a pull rope 17 are also provided in the left cavity 129. One end of the spring 16 is fixedly arranged on the inner wall of the connecting pipe 121. Both ends of the pull rope 17 are respectively fixedly arranged on one end of the top plate 132 and the end of the 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.

[0044] like Figure 1 and Figure 4 As shown, when the pressure pulsation of the liquid outlet pipe 3 causes the piston plate 122 to move, the push rod 131 drives the top plate 132 to rotate around the fulcrum, and the pull rope 17 at one end of the top plate 132 is stretched as the top plate 132 rotates, and the spring 16 is stretched to store elastic potential energy, and the roller 15 rotates to guide the movement direction of the pull rope 17 to ensure that the force transmission path is stable, and the spring 16 applies a reverse reset force to the top plate 132 through the pull rope 17; when the pressure pulsation weakens, the spring 16 releases the elastic potential energy, drives the top plate 132 to rotate in the opposite direction through the pull rope 17, and the extrusion plate 124 is reset under the rebound force of the airbag 123, completing a buffer cycle; in addition, the spring 16 provides a preload force, so that the top plate 132 can be quickly reset after the pressure pulsation disappears, avoiding secondary vibration; the spring 16 can convert part of the pressure pulsation energy into elastic potential energy, thereby reducing the energy consumption of the system.

[0045] like Figure 1 and Figure 4As shown, the adaptive adjustment component 14 includes an air collecting box 141, a connecting pipe 142, a push rod 143 and a connecting rod 144. The air collecting box 141 is fixedly installed on the outer wall of the connecting pipe 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. A one-way valve is 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 air bag 123. The inner wall of 41 is slidably connected with a piston plate three 145, one end of a push rod three 143 is penetrated in the horizontal direction and slidably sealed on the side wall of the connecting tube two 121, the other end of the push rod three 143 is penetrated in the horizontal direction and slidably sealed on the side wall of the air collecting box 141, and one end of the push rod three 143 located in the air collecting box 141 is fixedly connected to 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.

[0046] like Figure 1 and Figure 4 As shown, when the pressure pulsation of the liquid outlet pipe 3 increases, the piston plate 2 122 slides in the connecting pipe 2 121, and at the same time drives the push rod 2 131 to move, the push rod 2 131 drives the connecting rod 3 144 to rotate, the connecting rod 3 144 drives the push rod 3 143 to move, and the push rod 3 143 drives the piston plate 3 145 to slide in the air collecting box 141. The air in the air collecting box 141 is pushed by the piston plate 3 145 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 is exhausted to the outside 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; thereby facilitating the real-time adjustment of the volume of the airbag 123.

[0047] like Figure 1 As shown, a connecting plate 18 is fixedly connected to the bottom side wall of the pump body 1, and a support plate 19 is provided on the side of the connecting plate 18 close to the base 4, and the support plate 19 abuts against the base 4. A plurality of springs 3 20 are provided between the connecting plate 18 and the support plate 19, and the springs 3 20 are vertically arranged, and the two ends of the springs 3 20 are respectively fixedly connected to the connecting plate 18 and the relative inner walls of the support plate 19.

[0048] like Figure 1 As shown, when the diaphragm booster pump is working, the reciprocating motion of the diaphragm, the flow of liquid and the operation of mechanical parts will generate vibrations, which will be transmitted to the connecting plate 18 connected thereto through the pump body 1; when the pump body 1 vibrates to move the connecting plate 18 downward or upward, the spring three 20 is compressed or stretched, and the spring three 20 stores elastic potential energy to slow down its descending or ascending speed; through this compression and stretching process of the spring three 20, the vibration energy is continuously absorbed and released, thereby buffering the vibration of the pump body 1, thereby further reducing the noise caused by the vibration of the pump body 1.

[0049] like Figure 1 and Figure 4 As shown, a sleeve 21 and a piston rod 22 are provided in the spring 3 20, and the sleeve 21 and the piston rod 22 are both vertically arranged, one end of the sleeve 21 is fixedly connected to the bottom of the connecting plate 18, one end of the piston rod 22 is fixedly connected to the top of the support plate 19, and the top of the piston rod 22 is slidably connected to the inner wall of the sleeve 21; a channel is opened in the connecting pipe 142, and a liquid storage box 23 for storing damping liquid is fixedly installed on the bottom side wall of the pump body 1, and a connecting pipe 3 24 is provided between the liquid storage box 23 and the connecting plate 18, and the two ends of the connecting pipe 3 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 in the sleeve 21, the channel and the connecting pipe 3 24; a ball valve 25 is installed on the connecting pipe 3 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.

[0050] like Figure 1 and Figure 4 As shown, when the pump body 1 vibrates due to liquid pulsation, the vibration is transmitted to the sleeve 21 and the piston rod 22 in the spring 3 20 through the connecting plate 18, and the vibration causes the sleeve 21 and the piston rod 22 to slide relative to each other. The damping liquid in the sleeve 21 flows under the squeezing of the piston rod 22, and the damping liquid flows into the liquid storage box 23 through the channel and the connecting pipe 3 24; the damping liquid generates viscous resistance when flowing in the channel, and the third drive component 26 is triggered when the liquid pulsation generates vibration. The third drive component 26 can drive the valve body shaft of the ball valve 25 to rotate according to the vibration intensity to change the opening and closing degree of the ball valve 25; when the vibration is strong, the third drive component 26 reduces the opening and closing degree of the ball valve 25, so that the flow resistance of the damping liquid increases, the flow velocity decreases, the damping effect is enhanced, the system stiffness increases, and the high-frequency vibration is suppressed; when the vibration is weak, the opening and closing degree of the ball valve 25 increases, the liquid flows smoothly, the damping is reduced, and excessive damping is avoided.

[0051] like Figure 1 , Figure 4 and Figure 5 As shown, the third driving assembly 26 includes a push rod 4 261, a rack 262 and a rotating rod 263. The push rod 4 261 is vertically arranged, and the top end of the push rod 4 261 is passed through the top plate 132 and fixedly connected to the bottom end of the push rod 2 131. A slide groove 264 for sliding the push rod 4 261 is opened in the horizontal direction on the top plate 132; the rack 262 is vertically arranged on the bottom outer side of the connecting pipe 2 121, and the top end of the rack 262 is fixedly connected to the bottom end of the push rod 4 261; the rotating rod 263 is horizontally arranged, and a support rod 265 is fixedly connected to the outer wall of the pump body 1. The rotating rod 263 is passed through and rotatably connected to the support rod 265. One end of the rotating rod 263 is fixedly connected to the rotating shaft of the valve body in the ball valve 25, and the other end of the rotating rod 263 is sleeved and fixed with a gear 266, which meshes with the rack 262.

[0052] like Figure 1 , Figure 4 and Figure 5 As shown, the vibration generated when the diaphragm booster pump is working will cause the piston plate 2 122 and the push rod 2 131 to slide in the connecting pipe 2 121, and the movement of the push rod 2 131 will synchronously drive the push rod 4 261 to move, and the movement of the push rod 4 261 will cause the rack 2 262 to also make a linear motion. When the rack 262 makes a linear motion, it will drive the gear 2 266 to rotate, and the rotation of the gear 266 will drive the rotating rod 263 to rotate on the outer wall of the pump body 1. The rotation of the rotating rod 263 will directly drive the rotating shaft of the valve body in the ball valve 25 to rotate, 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 is reduced, reducing the flow rate of the damping liquid; when the vibration intensity is reduced, the opening and closing degree of the ball valve 25 is increased, increasing the flow rate of the damping liquid.

[0053] The implementation principle of the embodiment of the present application is as follows: when liquid flows from an external input pipeline through the venturi tube 5 into the suction chamber 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 throat pressure change of the venturi tube 5 drives the piston plate 1 7 to move, and the piston plate 1 7 triggers the blade 9 to rotate through the first drive component 10, thereby increasing the blocking area of ​​the blade 9 to 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 buffer 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 2 122, the air bag 123 and the extrusion plate 124; the base 4 further absorbs and releases the vibration energy through the synergistic effect of the spring 3 20 and the damping liquid, thereby enhancing the vibration reduction 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 reduction mechanism, reduces vibration and noise, and improves the operating stability and service life of the pump body 1.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present 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).

2. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 1, characterized in that: 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.

3. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 2, 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).

4. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 3, 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).

5. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 4, 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 closely attached to and rollingly arranged on the extrusion plate (124).

6. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 4, 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).

7. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 4, 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).

8. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 7, 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.

9. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 8, 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).

10. A diaphragm booster pump with a buffering noise reduction mechanism according to claim 9, 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).

Images