Damping and energy-absorbing transmission part and pressure relief pump

Abstract

The utility model belongs to the technical field of diaphragm pumps, and particularly discloses a shock absorption and energy absorption transmission part and a pressure relief pump, the shock absorption and energy absorption transmission part comprises an eccentric wheel, a transmission shaft is eccentrically and obliquely inserted on the eccentric wheel, the output end of the transmission shaft is sleeved with a swing frame, and an energy absorption spring and a ball are contained in the swing frame. The balls are elastically connected with the swing frame through energy absorption springs, and the output tail end of the transmission shaft abuts against the balls. According to the shock absorption and energy absorption transmission piece, the transmission shaft and the swing frame are flexibly and smoothly connected, and the shock absorption and energy absorption effects are achieved. The pressure relief pump comprises a shell assembly, a piston and the shock absorption and energy absorption transmission part, the shock absorption and energy absorption transmission part is rotationally arranged in the shell assembly, the piston is inserted into the swing frame, and the edge of the piston is fixedly connected with the shell assembly. The pressure relief pump can absorb energy, reduce vibration and relieve pressure even under the condition that the pressure of the pipeline is overloaded, the situation that the power transmission piece and the piston are damaged due to the fact that the pressure of the pipeline is abnormal is avoided, and the service life of a product is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of diaphragm pumps, and in particular relates to a shock-absorbing energy-absorbing transmission component and a pressure relief pump. Background Art

[0002] The diaphragm pump is a type of pump widely used in the chemical, pharmaceutical, food and other industries. Its working principle mainly relies on the back and forth agitation of the diaphragm (i.e., piston), thereby changing the volume of the pump chamber to achieve the purpose of pumping liquid.

[0003] The existing diaphragm pump water pressure is mostly around 300Kpa, and it is impossible to relieve the pressure. When the pipeline is overloaded or encounters an abnormal situation (such as: terminal product blockage), the sudden pressure will cause certain fluctuations in the transmission structure inside the diaphragm pump, thereby generating vibrations, and even damaging the power transmission parts and pistons, reducing the life of the diaphragm pump.

[0004] Therefore, the inventor is committed to designing a transmission member and a pressure relief pump to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a shock-absorbing and energy-absorbing transmission member, which can absorb the fluctuations generated by sudden pressure transmission and achieve the effects of shock absorption and energy absorption.

[0006] Another object of the utility model is to provide a pressure relief pump that can absorb energy and reduce vibration when pressure overload occurs in the pipeline, thereby protecting the stability of the entire transmission component, avoiding damage to the power transmission parts and the piston due to abnormal pipeline pressure, and increasing the life of the product.

[0007] In order to achieve the above object, a technical solution adopted by the utility model is:

[0008] A shock-absorbing energy-absorbing transmission component comprises an eccentric wheel, on which a transmission shaft is eccentrically and obliquely inserted, an output end of the transmission shaft is sleeved with a swing frame, an energy-absorbing spring and a ball are accommodated in the swing frame, the ball is elastically connected to the swing frame via the energy-absorbing spring, and the output end of the transmission shaft presses against the ball.

[0009] As an improvement of the shock-absorbing and energy-absorbing transmission member of the utility model, a plug hole is eccentrically and obliquely provided on the top of the eccentric wheel, and the input end gap of the transmission shaft is inserted into the plug hole.

[0010] As an improvement of the shock-absorbing and energy-absorbing transmission member of the utility model, an axial hole is provided at the bottom of the swing frame, the axial hole is coaxially arranged with the transmission shaft, and the output end of the transmission shaft is inserted into the axial hole through a clearance.

[0011] As an improvement of the shock-absorbing and energy-absorbing transmission member of the utility model, the ball and the energy-absorbing spring are both accommodated in the shaft hole along the axial direction of the transmission shaft, and a connecting hole is provided at the bottom of the eccentric wheel.

[0012] In order to achieve the above another purpose, a technical solution adopted by the utility model is:

[0013] A pressure relief pump comprises a housing assembly, a piston and the above-mentioned shock-absorbing energy-absorbing transmission member, wherein the shock-absorbing energy-absorbing transmission member is rotatably arranged in the housing assembly, a piston is inserted on the swing frame, and the edge of the piston is fixedly connected to the housing assembly.

[0014] As an improvement of the pressure relief pump of the utility model, a driving source is provided at the bottom of the housing assembly, and the eccentric wheel is sleeved on the output shaft of the driving source.

[0015] As an improvement of the pressure relief pump of the utility model, the housing assembly includes a cylinder assembly, a valve seat and a cover body, the driving end of the piston is located in the cylinder assembly, the piston cover is arranged at one end of the valve seat to form a diaphragm chamber, and the cover body is arranged at the other end of the valve seat to form a discharge chamber and a suction chamber, and the suction hole of the suction chamber is connected with the discharge hole of the discharge chamber through the diaphragm chamber.

[0016] As an improvement of the pressure relief pump of the utility model, the discharge hole is elliptical, the diaphragm chamber accommodates an umbrella valve, the discharge cavity accommodates an outlet valve, and the umbrella valve and the outlet valve are both movably inserted on the valve seat.

[0017] As an improvement of the pressure relief pump of the utility model, a limit block is provided on the valve seat, the limit block is located in the discharge cavity, a limit notch is provided at the edge of the outlet valve, and the limit notch corresponds to the limit block.

[0018] As an improvement of the pressure relief pump of the utility model, the limit block is arranged along the radial direction of the valve seat, and the limit block and the valve seat are integrally formed.

[0019] Compared with the prior art, the shock-absorbing and energy-absorbing transmission component of the utility model arranges energy-absorbing springs and balls in the swing frame, and utilizes the transmission shaft to press the balls elastically connected to the swing frame, so that the transmission shaft and the swing frame are flexibly and smoothly connected, so that the transmission shaft can absorb the fluctuations caused by the sudden pressure transmission of the swing frame with the help of the energy-absorbing spring, thereby achieving the effects of shock absorption and energy absorption.

[0020] Compared with the prior art, the pressure relief pump of the utility model has a shock-absorbing and energy-absorbing transmission part with shock-absorbing and energy-absorbing functions rotatably arranged in the shell assembly, thereby driving the piston to move back and forth. Even when the pipeline is overloaded with pressure, it can absorb energy, reduce vibration and relieve pressure, thereby protecting the stability of the entire transmission component, avoiding damage to the power transmission parts and the piston due to abnormal pipeline pressure, and increasing the life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an enlarged cross-sectional view of the shock-absorbing and energy-absorbing transmission member of the utility model;

[0022] Figure 2 It is a three-dimensional exploded and enlarged view of the shock-absorbing and energy-absorbing transmission member of the utility model;

[0023] Figure 3 It is a three-dimensional exploded and enlarged view of the shock-absorbing and energy-absorbing transmission member of the utility model from another perspective;

[0024] Figure 4 It is an enlarged cross-sectional view of the pressure relief pump of the utility model;

[0025] Figure 5 It is a three-dimensional exploded view of the pressure relief pump of the utility model;

[0026] Figure 6 It is a three-dimensional exploded enlarged view of the valve seat and the outlet valve of the utility model;

[0027] Figure 7 It is a three-dimensional exploded view of the pressure relief pump of the utility model from another perspective;

[0028] Figure 8 It is a three-dimensional exploded enlarged view of the valve seat and the outlet valve of the utility model from another perspective.

[0029] Illustration Description:

[0030] 1. Motor; 11. Motor frame; 12. Output shaft; 13. Shell assembly; 131. Cylinder assembly; 14. Diaphragm chamber; 15. Suction chamber; 16. Discharge chamber; 2. Eccentric wheel; 21. Connecting hole; 22. Plug hole; 23. Transmission shaft; 3. Swing frame; 31. Shaft hole; 32. Energy absorbing spring; 33. Ball; 4. Piston; 41. Cylinder; 5. Umbrella valve; 6. Valve seat; 61. Suction hole; 62. Discharge hole; 63. Limit block; 7. Outlet valve; 71. Limit notch; 8. Cover; 81. Water inlet pipe; 82. Water outlet pipe; 83. Sealing sheet. DETAILED DESCRIPTION

[0031] The following is a detailed explanation of the implementation of the present invention in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention.

[0032] Reference Figures 1 to 3 A shock-absorbing energy-absorbing transmission component includes an eccentric wheel 2, a swing frame 3, a transmission shaft 23, an energy-absorbing spring 32 and a ball 33. The transmission shaft 23 is eccentrically and obliquely inserted on the eccentric wheel 2. The swing frame 3 is sleeved on the output end of the transmission shaft 23. The energy-absorbing spring 32 and the ball 33 are accommodated in the swing frame 3. The ball 33 is elastically connected to the swing frame 3 through the energy-absorbing spring 32, and the output end of the transmission shaft 23 presses against the ball 33.

[0033] Reference Figures 1 to 3 The top of the eccentric wheel 2 is eccentrically and inclinedly provided with a plug hole 22, and the plug hole 22 is inclined toward one side of the central axis of the eccentric wheel 2. The bottom of the eccentric wheel 2 is provided with a connecting hole 21.

[0034] Reference Figure 1 The transmission shaft 23 is in the shape of a rod, the upper end of the transmission shaft 23 is its output end, the lower end of the transmission shaft 23 is its input end, and the input end gap of the transmission shaft 23 is inserted into the socket 22 so that the transmission shaft 23 can rotate in the socket 22.

[0035] Reference Figure 1 and Figure 3 The top of the swing frame 3 is Y-shaped, and an axial hole 31 is provided at the bottom of the swing frame 3. The axial hole 31 is coaxially arranged with the transmission shaft 23. The output end of the transmission shaft 23 is inserted into the axial hole 31. The ball 33 and the energy absorbing spring 32 are both accommodated in the axial hole 31 along the axial direction of the transmission shaft 23. The energy absorbing spring 32, as an elastic element, can effectively absorb and alleviate the impact and vibration generated by the swing frame 3 during the movement. At the same time, the elastic characteristics of the energy absorbing spring 32 can automatically adjust its compression degree according to the movement state of the swing frame 3, thereby compensating for the The tiny gaps or errors that may occur during the manufacturing, assembly or use process help to ensure a stable connection between the swing frame 3 and the transmission shaft 23. The ball 33 reduces friction and provides smooth movement in the connection. When the swing frame 3 moves downward under a certain pressure, the transmission shaft 23 directly presses against the ball 33 while the eccentric wheel 2 rotates eccentrically, thereby compressing the energy-absorbing spring 32. Finally, the swing frame 3 located in the diaphragm pump presses against the transmission shaft 23 flexibly and smoothly during the swinging process, thereby avoiding damage to various components in the transmission.

[0036] The shock-absorbing and energy-absorbing transmission member of the utility model is provided with an energy-absorbing spring 32 and a ball 33 in the swing frame 3, and the transmission shaft 23 is used to press the ball 33 elastically connected to the swing frame 3, so that the transmission shaft 23 and the swing frame 3 are flexibly and smoothly connected, so that the transmission shaft 23 can absorb the fluctuations generated by the sudden pressure transmission of the swing frame 3 with the help of the energy-absorbing spring 32, thereby achieving the effect of shock absorption and energy absorption.

[0037] Reference Figures 4 to 8A pressure relief pump comprises a housing assembly 13, a piston 4, the above-mentioned shock-absorbing energy-absorbing transmission member and a driving source, wherein the shock-absorbing energy-absorbing transmission member is rotatably arranged in the housing assembly 13, the piston 4 is inserted on the swing frame 3, the edge of the piston 4 is fixedly connected to the housing assembly 13, and the driving source is arranged at the bottom of the housing assembly 13. The driving source of the utility model is preferably a motor 1, and the eccentric wheel 2 is sleeved on the output shaft 12 of the motor 1.

[0038] Reference Figure 5 and Figure 7 The housing assembly 13 includes a cylinder assembly 131, and the housing assembly 13 includes a motor frame 11 and a cylinder 41. The entire shock-absorbing energy-absorbing transmission component is located in the motor frame 11. The motor 1 is fixed to the bottom of the motor frame 11. The output shaft 12 of the motor 1 extends into the motor frame 11, and the output shaft 12 extends into the connecting hole 21 of the eccentric wheel 2. The motor 1 can drive the output shaft 12 to rotate, thereby driving the entire shock-absorbing energy-absorbing transmission component to move. The cylinder 41 is superimposed on the upper end surface of the motor frame 11. The piston 4 is made of elastic material, such as rubber. The top of the piston 4 is hollowed out to form three grooves. The lower end of the piston 4 is its driving end. The driving end of the piston 4 has three independent conical structures. The lower end of the piston 4 passes through the cylinder 41 and extends into the motor frame 11. The Y-shaped structure on the top of the swing frame 3 is correspondingly sleeved on the three conical structures of the driving end of the piston 4.

[0039] Reference Figure 5 , Figure 6 and Figure 8 The housing assembly 13 also includes a valve seat 6, and three limit blocks 63 and three discharge holes 62 are arranged in the inner groove of the top surface of the valve seat 6. The three limit blocks 63 are respectively arranged along the radial direction of the valve seat 6 and are integrally formed with the valve seat 6. The three discharge holes 62 are staggered with the three limit blocks 63, and each discharge hole 62 is elliptical. Three groups of suction holes 61 are arranged in the outer groove of the top surface of the valve seat 6. The top edge of the piston 4 is pressed between the cylinder body 41 and the valve seat 6 to form a sealing structure between the cylinder body 41 and the valve seat 6. The piston 4 is covered at the bottom end of the valve seat 6 to form three independent diaphragm chambers 14, and each diaphragm chamber 14 contains an umbrella valve 5, each umbrella valve 5 is in the shape of an inverted umbrella, and the upper ends of the three umbrella valves 5 are movably inserted into the valve seat 6, and the lower ends of the three umbrella valves 5 are movably covered on the three groups of suction holes 61 in a one-to-one correspondence, thereby controlling the unidirectional opening and closing of the three groups of suction holes 61.

[0040] Reference Figure 5 , Figure 6 and Figure 8The housing assembly 13 further includes a cover body 8, a water outlet pipe 82 and a water inlet pipe 81 are arranged at intervals on the top of the cover body 8, and the bottom end of the cover body 8 is sealed on the top surface of the valve seat 6 through a sealing sheet 83 to form a discharge chamber 16 and a suction chamber 15, wherein the suction chamber 15 is arranged in a circle around the discharge chamber 16 to form a ring, the water inlet pipe 81 is connected to the suction chamber 15, the water outlet pipe 82 is connected to the discharge chamber 16, the three groups of suction holes 61 are all located in the suction chamber 15, and the three diaphragm chambers 14 can be respectively connected to the suction chamber 15 through a corresponding group of suction holes 61 An outlet valve 7 is accommodated in the discharge chamber 16. The outlet valve 7 is umbrella-shaped. Three limiting notches 71 are arranged at intervals at the edge of the cover end of the outlet valve 7. The three limiting blocks 63 are all located in the discharge chamber 16. The three limiting notches 71 correspond to the three limiting blocks 63 in a one-to-one limiting manner. The lower end of the outlet valve 7 is movably inserted into the valve seat 6. The cover end of the upper end of the outlet valve 7 is movable. The cover is arranged on the three discharge holes 62, thereby controlling the unidirectional opening and closing of the three discharge holes 62. The suction hole 61 of the suction chamber 15 is connected with the discharge hole 62 of the discharge chamber 16 through the corresponding diaphragm chamber 14.

[0041] Reference Figures 4 to 8 The working principle of the pressure relief pump of the utility model is:

[0042] The motor 1 controls the output shaft 12 to rotate, thereby driving the eccentric wheel 2 to rotate, and the transmission shaft 23 rotates together with the eccentric wheel 2. The transmission shaft 23 drives the swing frame 3 to swing eccentrically flexibly and smoothly through the ball 33 and the energy absorption spring 32, so that the volume of the diaphragm chamber 14 changes. When the volume of the diaphragm chamber 14 changes from small to large, the three umbrella valves 5 are opened, and the three outlet valves 7 are closed. The external fluid enters the suction chamber 15 from the water inlet pipe 81, and the fluid in the suction chamber 15 is sucked into the three diaphragm chambers 14 through the three groups of suction holes 61 respectively, and the volume of the diaphragm chamber 14 increases. When the volume of the diaphragm chamber 14 changes from large to small, the three umbrella valves 5 are closed, and the outlet valve 7 is opened. The fluid in the three diaphragm chambers 14 is discharged from the three discharge holes 62 into the discharge chamber 16 respectively, and finally discharged from the water outlet pipe 82.

[0043] In the case of pipeline blockage, the blockage pressure of 10 pressure relief pumps of the utility model is compared with that of 10 conventional diaphragm pumps (without energy absorbing spring 32 and ball 33 structure), and the test results are shown in Table 1 below:

[0044] Table 1

[0045]

[0046]

[0047] From the data in Table 1 above, it can be seen that the pipeline pressure of the pressure relief pump of the utility model is only about 65% of that of the conventional diaphragm pump. Therefore, the pressure relief pump of the utility model has reduced the hazards of excessive pipeline pressure and damage to pump valves. The pressure relief pump of the utility model has played a good protective role on the pipeline and the pump valve body.

[0048] The pressure relief pump of the utility model is flexibly and smoothly connected between the swing frame 3 and the transmission shaft 23 through the energy absorbing spring 32 and the ball 33, which has the following advantages:

[0049] (1) Buffering and shock absorption: The energy-absorbing spring 32, as an elastic element, can effectively absorb and alleviate the impact and vibration generated by the swing frame 3 during movement, which helps to reduce the wear of mechanical parts and improve the overall life of the diaphragm pump;

[0050] (2) Automatic adjustment and compensation: The elastic characteristics of the energy-absorbing spring 32 can automatically adjust its compression degree according to the motion state of the swing frame 3, thereby compensating for the small gaps or errors that may occur during manufacturing, assembly or use. This helps to ensure a stable connection between the swing frame 3 and the transmission shaft 23, improve the working accuracy and efficiency of the diaphragm pump, and at the same time, the energy-absorbing spring 32 can also help balance the force generated by the diaphragm during the reciprocating motion, reduce impact and vibration, and thus extend the service life of the pump;

[0051] (3) Smooth movement of ball 33: Ball 33 plays a role in reducing friction and providing smooth movement in the connection. The rolling contact of ball 33 can greatly reduce the friction coefficient, reduce energy loss, and improve the working efficiency of the diaphragm pump. At the same time, the smooth movement of ball 33 also helps to reduce the wear and heat generation of parts;

[0052] (4) Reduce noise: The swing frame 3 and the transmission shaft 23 are connected by the energy-absorbing spring 32 and the ball 33, so that the impact and vibration of the swing frame 3 during the movement are effectively alleviated, thereby reducing the noise generated by the diaphragm pump during operation;

[0053] (5) Enhanced structural flexibility: The elastic connection of the energy-absorbing spring 32 makes the connection between the swing frame 3 and the transmission shaft 23 flexible and can adapt to changes in movement and load within a certain range, which helps to improve the diaphragm pump's ability to adapt to changes in the working environment.

[0054] In summary, by using the energy-absorbing spring 32 and the ball 33 to connect the swing frame 3 and the transmission shaft 23 of the diaphragm pump, the benefits of buffering and shock absorption, automatic adjustment and compensation, smooth movement, reduced noise and enhanced structural flexibility can be achieved, thereby improving the performance and reliability of the diaphragm pump.

[0055] The pressure relief pump of the utility model has a shock-absorbing and energy-absorbing transmission member with shock-absorbing and energy-absorbing functions rotatably arranged in the housing assembly 13, thereby driving the piston 4 to agitate back and forth. Even when the pipeline is overloaded with pressure, it can absorb energy, reduce vibration and relieve pressure, thereby protecting the stability of the entire transmission component, avoiding damage to the power transmission component and the piston due to abnormal pipeline pressure, and increasing the life of the product.

[0056] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A shock-absorbing and energy-absorbing transmission component, characterized in that: It includes an eccentric wheel, on which a transmission shaft is eccentrically and obliquely inserted, an output end of the transmission shaft is sleeved with a swing frame, an energy absorbing spring and a ball are accommodated in the swing frame, the ball is elastically connected to the swing frame through the energy absorbing spring, and the output end of the transmission shaft presses against the ball.

2. The shock-absorbing and energy-absorbing transmission member according to claim 1, characterized in that: The top of the eccentric wheel is eccentrically and inclinedly provided with an insertion hole, and the input end of the transmission shaft is inserted into the insertion hole through clearance.

3. The shock-absorbing and energy-absorbing transmission member according to claim 1, characterized in that: An axial hole is provided at the bottom of the swing frame. The axial hole is coaxially arranged with the transmission shaft, and the output end of the transmission shaft is inserted into the axial hole through a clearance.

4. The shock-absorbing and energy-absorbing transmission member according to claim 3, characterized in that: The ball bearing and the energy absorbing spring are both accommodated in the shaft hole along the axial direction of the transmission shaft, and a connecting hole is provided at the bottom of the eccentric wheel.

5. A pressure relief pump, characterized in that: It comprises a shell assembly, a piston and a shock-absorbing and energy-absorbing transmission member as described in any one of claims 1 to 4, wherein the shock-absorbing and energy-absorbing transmission member is rotatably arranged in the shell assembly, a piston is inserted on the swing frame, and the edge of the piston is fixedly connected to the shell assembly.

6. The pressure relief pump according to claim 5, characterized in that: A driving source is arranged at the bottom of the housing component, and the eccentric wheel is sleeved on the output shaft of the driving source.

7. The pressure relief pump according to claim 5, characterized in that: The housing assembly includes a cylinder assembly, a valve seat and a cover body. The driving end of the piston is located in the cylinder assembly. The piston cover is arranged at one end of the valve seat to form a diaphragm chamber. The cover body is arranged at the other end of the valve seat to form a discharge chamber and a suction chamber. The suction hole of the suction chamber is connected with the discharge hole of the discharge chamber through the diaphragm chamber.

8. The pressure relief pump according to claim 7, characterized in that: The discharge hole is elliptical, an umbrella valve is housed in the diaphragm chamber, an outlet valve is housed in the discharge cavity, and both the umbrella valve and the outlet valve are movably inserted on the valve seat.

9. The pressure relief pump according to claim 7, characterized in that: A limiting block is provided on the valve seat, and the limiting block is located in the discharge cavity. A limiting notch is provided at the edge of the outlet valve, and the limiting notch corresponds to and cooperates with the limiting block.

10. The pressure relief pump according to claim 9, characterized in that: The limit block is arranged along the radial direction of the valve seat, and the limit block is integrally formed with the valve seat.

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