Drawing device and method for diaphragm pump one-way valve

Abstract

The invention relates to the technical field of valve maintenance, in particular to a drawing device and method for a one-way valve of a diaphragm pump. The drawing device comprises a transverse plate, an adjusting plate is arranged below the transverse plate, two pull rods are installed at the upper end of the adjusting plate, the upper ends of the pull rods penetrate through the transverse plate in a sliding mode, and an upper cross beam is arranged above the transverse plate; the upper ends of the two pull rods penetrate through the upper cross beam, the two pull rods are sleeved with fixing nuts through external threads, the pull rods are fixed to the upper cross beam through the fixing nuts, a hydraulic cylinder is installed on the transverse plate, a power shaft of the hydraulic cylinder is fixed to the upper cross beam, and a pressure sensor is installed between the hydraulic cylinder and the upper cross beam. The pressure sensor is electrically connected with the hydraulic cylinder, and a stabilizing mechanism fixed to the upper end face of the one-way valve is arranged on the transverse plate. Compared with the prior art, the cone valve seat can be taken out easily, safety is high, drawing is stable, time is saved, and the one-way valve cannot be affected.

Description

Technical Field

[0001] The present invention relates to the technical field of valve maintenance, in particular to a pulling device and method for a one-way valve of a diaphragm pump. Background Art

[0002] The diaphragm pump, also known as the control pump, is the main type of actuator. It changes the fluid flow rate by receiving the control signal output by the adjustment control unit and using power operation. The role of the diaphragm pump in the control process is to receive the control signal of the regulator or computer, change the flow rate of the adjusted medium, and maintain the adjusted parameters within the required range, thereby achieving automation of the production process. If the automatic adjustment system is compared with the manual adjustment process, the detection unit is the human eye, the adjustment control unit is the human brain, and the execution unit - the diaphragm pump is the human hand and foot. To achieve the adjustment and control of a certain process parameter such as temperature, pressure, flow, liquid level, etc., the diaphragm pump is indispensable.

[0003] A cone valve seat is provided in the one-way valve of the diaphragm pump. During use, the cone valve seat will be subjected to repeated up and down impacts of the one-way valve core, which makes the cone valve seat easily stuck in the one-way valve and cannot be removed. When maintaining the one-way valve, the cone valve seat is cut into several pieces by gas cutting and then removed. On the one hand, it takes a long time to remove the cone valve seat by gas cutting. On the other hand, during the gas cutting process, the valve body will be affected by local high temperature, which may easily cause the local mechanical properties of the valve body to change, thereby reducing its service life.

[0004] Therefore, based on the above problems, we invented a pulling device and method for a diaphragm pump one-way valve. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a pulling device and method for a one-way valve of a diaphragm pump to solve the problems raised in the above background technology.

[0006] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0007] Furthermore, the stabilizing mechanism includes a plurality of stabilizing grooves arranged at the lower end of the horizontal plate, a stabilizing screw is rotatably installed in the stabilizing groove, a threaded block is provided on the external thread of the stabilizing screw, and the threaded block is slidably connected to the stabilizing groove, a stabilizing block is slidably installed on the lower end of the horizontal plate, the threaded block is fixed to the stabilizing block, a transmission gear is coaxially installed on the outside of the stabilizing screw, a transmission gear ring is rotatably embedded in the lower end of the horizontal plate, and multiple transmission gears are meshed with the transmission gear ring, and one end of one of the stabilizing screws rotates through the horizontal plate and is fixed with a turning handle.

[0008] Furthermore, the fixing mechanism includes a plurality of fixing grooves arranged at the lower end of the adjusting plate, a fixing screw is rotatably installed in the fixing groove, a fixing block is provided on the external thread sleeve of the fixing screw, the fixing block is slidably connected to the fixing groove, a fixing foot is installed at the lower end of the fixing block, a transmission cavity is provided in the adjusting plate, one end of the plurality of fixing screws rotates through the adjusting plate and extends into the transmission cavity, a rotating rod is provided in the transmission cavity, the rotating rod and the plurality of fixing screws are connected by a bevel gear set, one end of the rotating rod rotates through the adjusting plate and the upper crossbeam and is fixed with an adjusting handle, and a through hole matching the rotating rod is provided on the cross plate.

[0009] Furthermore, the bevel gear set includes a driving wheel and multiple driven wheels, the multiple driven wheels are all meshed with the driving wheel, the driving wheel is coaxially installed with the rotating rod, and the multiple driven wheels are respectively coaxially installed with multiple fixed screws.

[0010] Furthermore, the anti-slip mechanism includes a cylinder fixedly mounted on the lower end of the adjusting plate, a lifting plate is mounted on the lower end of the cylinder, the cylinder sleeve is provided with a fixing ring, the fixing ring is fixed to the adjusting plate through a plurality of connecting rods, a plurality of support rods are rotatably mounted on the lower end of the fixing ring, and the plurality of support rods respectively correspond to a plurality of fixed feet, a support foot is rotatably mounted on the lower end of the support rod, a slide groove is provided on the side wall of the support rod, a slider is slidably mounted in the slide groove, a rotating groove is provided on the lifting plate, and the slider is rotatably mounted on the rotating groove.

[0011] Furthermore, the lower ends of the plurality of fixing legs are bent, and the bent portions face in a direction away from the central axis of the adjustment plate.

[0012] Furthermore, an outer wall of the lower side of the pull rod is provided with an external thread, and an upper end of the adjustment plate is provided with a threaded hole, and the external thread matches the internal thread of the threaded hole.

[0013] A method for pulling a one-way valve of a diaphragm pump, the specific steps are as follows:

[0014] S1: Place the regulating plate into the one-way valve and fix the horizontal plate to the upper opening of the one-way valve through the stabilizing block;

[0015] S2: Use the hydraulic cylinder to adjust the height of the adjusting plate so that the fixed foot matches the cone valve seat, and then adjust the fixed foot so that the fixed foot clamps the lower end of the cone valve seat;

[0016] S3: Adjust the position of the supporting legs through the cylinder so that the supporting legs are pressed tightly against the fixed legs;

[0017] S4: The upper crossbeam is pushed upward by the hydraulic cylinder, so that the fixed foot pulls the cone valve seat upward to pull the cone valve seat. When the pressure sensor detects that the pressure is too high, the power supply of the hydraulic pump in the hydraulic cylinder is automatically disconnected, and the pulling of the cone valve seat is stopped. Other pulling devices with higher pressure are replaced to pull until the cone valve seat is pulled out.

[0018] Compared with the prior art, the present invention provides a pulling device and method for a diaphragm pump one-way valve, which has the following beneficial effects:

[0019] By setting a stabilizing mechanism, a fixing mechanism and an anti-slipping mechanism, the cone valve seats in one-way valves of different sizes can be pulled, and the pulling process is relatively stable, without excessive force or detachment of the fixing legs, and the safety is relatively high. When pulling the cone valve seat, there is no need to split the cone valve seat, which saves a lot of time for removing the cone valve seat and avoids affecting the one-way valve body, and will not affect the subsequent use of the one-way valve.

[0020] The present invention is relatively simple to remove the cone valve seat, has high safety, is stable to pull out, saves time and will not affect the one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0023] Figure 3 Schematic diagram of the structure of the stabilizing mechanism in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the fixing mechanism in the present invention;

[0025] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 Schematic diagram of the structure of the anti-slip mechanism in the present invention;

[0027] Figure 7 It is a structural perspective view of the anti-slip mechanism of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the support rod in the present invention.

[0029] In the figure: 1. horizontal plate; 2. adjusting plate; 3. fixing foot; 4. stabilizing mechanism; 5. fixing mechanism; 6. anti-slip mechanism; 7. pull rod; 8. upper crossbeam; 9. fixing nut; 10. hydraulic cylinder; 11. stabilizing screw; 12. stabilizing groove; 13. transmission gear ring; 14. turning handle; 15. transmission gear; 16. threaded block; 17. stabilizing block; 18. fixing groove; 19. fixing screw; 20. fixing block; 21. transmission chamber; 22. bevel gear set; 23. driving wheel; 24. driven wheel; 25. cylinder; 26. lifting plate; 27. connecting rod; 28. support rod; 29. ​​support foot; 30. slide groove; 31. slider; 32. rotating groove; 33. rotating rod; 34. adjusting handle; 35. fixing ring. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] As introduced in the background technology, in order to solve the deficiencies in the prior art and to solve the above technical problems, the present application proposes a pulling device and method for a one-way valve of a diaphragm pump.

[0032] like Figures 1-8 As shown, a pulling device for a one-way valve of a diaphragm pump includes a horizontal plate 1, an adjusting plate 2 is provided below the horizontal plate 1, and two pull rods 7 are installed on the upper end of the adjusting plate 2. It should be noted that the lower outer wall of the pull rod 7 is provided with an external thread, and the upper end of the adjusting plate 2 is provided with a threaded hole, the external thread matches the internal thread of the threaded hole, the upper end of the pull rod 7 slides through the horizontal plate 1, an upper crossbeam 8 is provided above the horizontal plate 1, the upper ends of the two pull rods 7 are both provided through the upper crossbeam 8, the external thread sleeves of the two pull rods 7 are provided with fixing nuts 9, the pull rods 7 are fixed to the upper crossbeam 8 through the fixing nuts 9, and a hydraulic cylinder is installed on the horizontal plate 1. 10. The power shaft of the hydraulic cylinder 10 is fixed to the upper cross beam 8. A pressure sensor is installed between the hydraulic cylinder 10 and the upper cross beam 8. The pressure sensor is electrically connected to the hydraulic cylinder 10. The cross plate 1 is provided with a stabilizing mechanism 4 fixed to the upper end face of the one-way valve. A plurality of fixed legs 3 are installed at the lower end of the adjusting plate 2. It should be noted that the lower ends of the plurality of fixed legs 3 are all bent, and the bent parts are facing in a direction away from the central axis of the adjusting plate 2. The adjusting plate 2 is provided with a fixing mechanism 5 for fixing the plurality of fixed legs 3 to the cone valve seat, and the adjusting plate 2 is provided with an anti-slip mechanism 6 for supporting the plurality of fixed legs 3.

[0033] In order to ensure the stability of the process of pulling the cone valve seat, a stabilizing mechanism 4 is set up. The stabilizing mechanism 4 includes a plurality of stabilizing grooves 12 arranged at the lower end of the horizontal plate 1. A stabilizing screw 11 is rotatably installed in the stabilizing groove 12. The external thread sleeve of the stabilizing screw 11 is provided with a threaded block 16. The threaded block 16 is slidably connected to the stabilizing groove 12. A stabilizing block 17 is slidably installed at the lower end of the horizontal plate 1. It should be noted that a plurality of stabilizing blocks 17 are distributed in an annular array at the lower end of the horizontal plate 1. The threaded block 16 is fixed to the stabilizing block 17. A transmission gear 15 is coaxially installed on the outside of the stabilizing screw 11. A transmission gear ring 13 is rotatably embedded at the lower end of the horizontal plate 1. Multiple transmission gears 15 are meshed with the transmission gear ring 13. One end of one of the stabilizing screws 11 rotates through the horizontal plate 1 and is fixed with a turning handle 14.

[0034] Through the above technical features: rotating the handle 14, the rotating handle 14 drives one of the stabilizing screws 11 to rotate, one of the stabilizing screws 11 drives the other stabilizing screws 11 to rotate through the transmission gear ring 13 and the transmission gear 15, multiple stabilizing screws 11 drive multiple threaded blocks 16 to move, and multiple threaded blocks 16 drive multiple stabilizing blocks 17 to move until the multiple stabilizing blocks 17 are in contact with and tightly pressed against the inner wall of the one-way valve opening, thereby completing the fixation of the cross plate 1 and the one-way valve, and no shaking will occur when the cone valve seat is pulled.

[0035] The cone valve seat is fixed at multiple positions. When the cone valve seat is pulled, the force is ensured to be uniform. Therefore, a fixing mechanism 5 is provided. The fixing mechanism 5 includes multiple fixing grooves 18 provided at the lower end of the adjusting plate 2. A fixing screw 19 is rotatably installed in the fixing groove 18. The fixing screw 19 is externally threaded with a fixing block 20. The fixing block 20 is slidably connected to the fixing groove 18. A fixing foot 3 is installed at the lower end of the fixing block 20. A transmission cavity 21 is provided in the adjusting plate 2. One end of each fixing screw 19 rotates through the adjusting plate 2 and extends to the transmission cavity 21. A rotating rod 33 is provided in the transmission cavity 21, and the rotating rod 33 and the multiple fixed screws 19 are connected through a bevel gear set 22. Specifically, the bevel gear set 22 includes a driving wheel 23 and multiple driven wheels 24, and the multiple driven wheels 24 are all meshed with the driving wheel 23. The driving wheel 23 is coaxially installed with the rotating rod 33, and the multiple driven wheels 24 are coaxially installed with the multiple fixed screws 19 respectively. One end of the rotating rod 33 rotates through the adjustment plate 2 and the upper beam 8 and is fixed with an adjusting handle 34. The cross plate 1 is provided with a through hole matching the rotating rod 33.

[0036] Through the above technical features: rotating the adjusting handle 34, the adjusting handle 34 drives the rotating rod 33 to rotate, the rotating rod 33 drives the multiple fixing screws 19 to rotate, the multiple fixing screws 19 drive the multiple fixing blocks 20 to move relative to each other, and the multiple fixing blocks 20 drive the multiple fixing feet 3 to move until the multiple fixing feet 3 are fixed to the lower end of the cone valve seat. It is suitable for fixing and pulling cone valve seats of different sizes and has a wide range of applications.

[0037] In the process of pulling the cone valve seat, in order to avoid relative sliding between the fixed foot 3 and the cone valve seat, an anti-slip mechanism 6 is provided. The anti-slip mechanism 6 includes a cylinder 25 fixedly mounted on the lower end of the adjusting plate 2, and a lifting plate 26 is installed at the lower end of the cylinder 25. The cylinder 25 is provided with a fixing ring 35, and the fixing ring 35 is fixed to the adjusting plate 2 through a plurality of connecting rods 27. A plurality of support rods 28 are rotatably mounted on the lower end of the fixing ring 35. The plurality of support rods 28 correspond one-to-one to the plurality of fixed feet 3 respectively, and a supporting foot 29 is rotatably mounted on the lower end of the support rod 28. It should be noted that the support rod 28 and the supporting foot 29 are rotatably connected through a damping shaft, and the side wall of the support rod 28 is provided with a slide groove 30, and a slider 31 is slidably installed in the slide groove 30. A rotating groove 32 is provided on the lifting plate 26, and the slider 31 is rotatably mounted with the rotating groove 32.

[0038] Through the above technical features: the cylinder 25 is extended and retracted to drive the lifting plate 26 to rise and fall. During the lifting process, the lifting plate 26 will drive the support rod 28 to deflect, and the support rod 28 drives the supporting foot 29 to rotate until the supporting foot 29 contacts and tightens against the fixed foot 3. When the cone valve seat is pulled, relative sliding or even separation between the fixed foot 3 and the cone valve seat is avoided, thereby ensuring the stability of the cone valve seat when it is pulled.

[0039] A method for pulling a one-way valve of a diaphragm pump, the specific steps are as follows:

[0040] S1: Place the regulating plate 2 into the one-way valve and fix the horizontal plate 1 to the upper opening of the one-way valve through the stabilizing block 17;

[0041] S2: Adjust the height of the adjusting plate 2 through the hydraulic cylinder 10 so that the fixing foot 3 matches the cone valve seat, and then adjust the fixing foot 3 so that the fixing foot 3 clamps the lower end of the cone valve seat;

[0042] S3: Adjust the position of the support leg 29 by the cylinder 25 so that the support leg 29 is pressed against the fixed leg 3;

[0043] S4: The upper crossbeam 8 is pushed upward by the hydraulic cylinder 10, so that the fixed foot 3 pulls the cone valve seat upward to pull the cone valve seat. When the pressure sensor detects that the pressure is too high, the power supply of the hydraulic pump in the hydraulic cylinder 10 is automatically disconnected, and the pulling of the cone valve seat is stopped. Other pulling devices with higher pressure are replaced to pull until the cone valve seat is pulled out.

[0044] Working principle:

[0045] 1) Install the pulling equipment: Place the adjusting plate 2 in the one-way valve body, turn the handle 14, the handle 14 drives one of the stabilizing screws 11 to rotate, one of the stabilizing screws 11 drives the other stabilizing screws 11 to rotate through the transmission gear ring 13 and the transmission gear 15, and the multiple stabilizing screws 11 drive the multiple threaded blocks 16 to move, and the multiple threaded blocks 16 drive the multiple stabilizing blocks 17 to move until the multiple stabilizing blocks 17 are in contact with and tightly against the inner wall of the one-way valve opening, and the cross plate 1 and the one-way valve are fixed. At this time, the hydraulic cylinder 10 is extended and retracted to drive the upper crossbeam 8 to rise and fall, and the upper crossbeam 8 drives the adjusting plate 2 to rise and fall through the pull rod 7, and the adjusting plate 2 drives The fixed foot 3 is raised and lowered until it is in a suitable position so that the fixed foot 3 matches the lower end of the cone valve seat, and then the adjusting handle 34 is rotated. The adjusting handle 34 drives the rotating rod 33 to rotate, and the rotating rod 33 drives the multiple fixing screws 19 to rotate. The multiple fixing screws 19 drive the multiple fixing blocks 20 to move relatively, and the multiple fixing blocks 20 drive the multiple fixing feet 3 to move until the multiple fixing feet 3 are fixed to the lower end of the cone valve seat. The cylinder 25 is extended and retracted to drive the lifting plate 26 to rise and fall. The lifting plate 26 drives the support rod 28 to deflect during the lifting process, and the support rod 28 drives the supporting foot 29 to rotate until the supporting foot 29 contacts and tightens with the fixed foot 3, and the installation is completed.

[0046] 2) Pulling the cone valve seat: The hydraulic cylinder 10 is extended and retracted, and the hydraulic cylinder 10 pushes the upper crossbeam 8 to move. The upper crossbeam 8 pulls the adjustment plate 2 up and down through the pull rod 7. The adjustment plate 2 drives the cone valve seat up and down through the fixed foot 3. If the cone valve seat and the one-way valve are stuck, the thrust of the hydraulic cylinder 10 is insufficient. At this time, the thrust is greater than the pressure set by the pressure sensor. At this time, the pressure sensor disconnects the power supply of the hydraulic pump in the hydraulic cylinder 10, and other pulling equipment is replaced to pull again.

[0047] It should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0048] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present application. They are not intended to limit the scope of protection of the present application. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present application should be included in the scope of protection of the present invention.

Claims

1. A pulling device for a one-way valve of a diaphragm pump, characterized by: The invention comprises a horizontal plate (1), an adjusting plate (2) is provided below the horizontal plate (1), two pull rods (7) are installed on the upper end of the adjusting plate (2), the upper ends of the pull rods (7) slide through the horizontal plate (1), an upper crossbeam (8) is provided above the horizontal plate (1), the upper ends of the two pull rods (7) are both provided through the upper crossbeam (8), the external thread sleeves of the two pull rods (7) are provided with fixing nuts (9), the pull rods (7) are fixed to the upper crossbeam (8) through the fixing nuts (9), a hydraulic cylinder (10) is installed on the horizontal plate (1), and the hydraulic cylinder The power shaft of (10) is fixed to the upper crossbeam (8), a pressure sensor is installed between the hydraulic cylinder (10) and the upper crossbeam (8), and the pressure sensor is electrically connected to the hydraulic cylinder (10). The cross plate (1) is provided with a stabilizing mechanism (4) fixed to the upper end face of the one-way valve, a plurality of fixed legs (3) are installed at the lower end of the regulating plate (2), a fixing mechanism (5) for fixing the plurality of fixed legs (3) to the cone valve seat is provided on the regulating plate (2), and an anti-slip mechanism (6) for supporting the plurality of fixed legs (3) is provided on the regulating plate (2).

2. A pulling device for a one-way valve of a diaphragm pump according to claim 1, characterized in that: The stabilizing mechanism (4) comprises a plurality of stabilizing grooves (12) arranged at the lower end of the transverse plate (1), a stabilizing screw (11) is rotatably installed in the stabilizing groove (12), a threaded block (16) is provided on the external thread of the stabilizing screw (11), and the threaded block (16) is slidably connected to the stabilizing groove (12), a stabilizing block (17) is slidably installed on the lower end of the transverse plate (1), the threaded block (16) is fixed to the stabilizing block (17), a transmission gear (15) is coaxially installed on the outside of the stabilizing screw (11), a transmission gear ring (13) is rotatably embedded in the lower end of the transverse plate (1), and a plurality of the transmission gears (15) are all meshed with the transmission gear ring (13), and one end of one of the stabilizing screws (11) is rotatably passed through the transverse plate (1) and fixed with a turning handle (14).

3. The pulling device for a one-way valve of a diaphragm pump according to claim 1, characterized in that: The fixing mechanism (5) comprises a plurality of fixing grooves (18) arranged at the lower end of the adjusting plate (2), a fixing screw (19) is rotatably installed in the fixing groove (18), the fixing screw (19) is externally threadedly sleeved with a fixing block (20), the fixing block (20) is slidably connected to the fixing groove (18), a fixing foot (3) is installed at the lower end of the fixing block (20), a transmission cavity (21) is provided in the adjusting plate (2), one end of the plurality of fixing screws (19) rotates through the adjusting plate (2) and extends into the transmission cavity (21), a rotating rod (33) is provided in the transmission cavity (21), the rotating rod (33) and the plurality of fixing screws (19) are connected to each other by a bevel gear set (22), one end of the rotating rod (33) rotates through the adjusting plate (2) and the upper crossbeam (8) and is fixed with an adjusting handle (34), and a through hole matching the rotating rod (33) is provided on the cross plate (1).

4. A pulling device for a one-way valve of a diaphragm pump according to claim 3, characterized in that: The bevel gear set (22) includes a driving wheel (23) and a plurality of driven wheels (24), the plurality of driven wheels (24) are all meshed and connected with the driving wheel (23), the driving wheel (23) is coaxially mounted with a rotating rod (33), and the plurality of driven wheels (24) are respectively coaxially mounted with a plurality of fixed screw rods (19).

5. The pulling device for a one-way valve of a diaphragm pump according to claim 3, characterized in that: The anti-slip mechanism (6) comprises a cylinder (25) fixedly mounted on the lower end of the adjustment plate (2), a lifting plate (26) being mounted on the lower end of the cylinder (25), a fixing ring (35) being sleeved on the cylinder (25), the fixing ring (35) being fixed to the adjustment plate (2) through a plurality of connecting rods (27), a plurality of support rods (28) being rotatably mounted on the lower end of the fixing ring (35), the plurality of support rods (28) corresponding to a plurality of fixed legs (3) respectively, a support leg (29) being rotatably mounted on the lower end of the support rod (28), a sliding groove (30) being provided on the side wall of the support rod (28), a slider (31) being slidably mounted in the sliding groove (30), a rotating groove (32) being provided on the lifting plate (26), and the slider (31) being rotatably mounted on the rotating groove (32).

6. The pulling device for a one-way valve of a diaphragm pump according to claim 3, characterized in that: The lower ends of the plurality of fixed legs (3) are all bent, with the bent portions facing in a direction away from the central axis of the adjustment plate (2).

7. The pulling device for a one-way valve of a diaphragm pump according to claim 1, characterized in that: The lower outer wall of the pull rod (7) is provided with an external thread, and the upper end of the adjustment plate (2) is provided with a threaded hole, and the external thread matches the internal thread of the threaded hole.

8. A method for drawing a one-way valve for a diaphragm pump, applicable to a drawing device for a one-way valve for a diaphragm pump according to any one of claims 1 to 7, characterized in that: The specific steps are as follows: S1: Place the regulating plate (2) into the one-way valve and fix the horizontal plate (1) to the upper opening of the one-way valve through the stabilizing block (17); S2: The height of the adjusting plate (2) is adjusted by the hydraulic cylinder (10) so that the fixing foot (3) matches the cone valve seat, and then the fixing foot (3) is adjusted so that the fixing foot (3) clamps the lower end of the cone valve seat; S3: Adjust the position of the supporting foot (29) by the cylinder (25) so that the supporting foot (29) and the fixed foot (3) are pressed tightly together; S4: The upper crossbeam (8) is pushed upward by the hydraulic cylinder (10), thereby causing the fixed foot (3) to pull the cone valve seat upward, thereby pulling the cone valve seat. When the pressure sensor detects that the pressure is too high, the power supply of the hydraulic pump in the hydraulic cylinder (10) is automatically disconnected, and the pulling of the cone valve seat is stopped. Another pulling device with a higher pressure is replaced to pull until the cone valve seat is pulled out.

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