Pneumatic diaphragm pump with rear-mounted air valve

Abstract

The pneumatic diaphragm pump with the rear-mounted air valve comprises a pneumatic diaphragm pump body, a connecting pipe is fixedly arranged at the rear end of the pneumatic diaphragm pump body, the air valve is arranged on the connecting pipe, a hand wheel is arranged on the air valve, a round hole is formed in the upper end face of the hand wheel, a plug pin is arranged in the round hole in a sliding mode, and the plug pin is connected with the pneumatic diaphragm pump body. A plurality of inserting grooves are formed in the upper end face of the air valve, the inserting grooves are circumferentially arranged, the lower ends of the inserting pins are located in the inserting grooves, lifting blocks are fixedly arranged at the upper ends of the inserting pins, and springs are fixedly arranged between the lifting blocks and the hand wheel, so that a user can control the flow in the air valve through the hand wheel; and then the spring jacks the bolt into the slot to position the hand wheel, so that the hand wheel is prevented from rotating when the pneumatic diaphragm pump main body works, and the regulation and control precision is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic diaphragm pumps, and more specifically, to a pneumatic diaphragm pump with a rear-mounted air valve. Background Art

[0002] The pneumatic diaphragm pump is a pump driven by air pressure, mainly used to transport various liquids, slurries, pastes and other media. Its working principle is to control the air pressure change through the pneumatic motor or pneumatic valve, so that the diaphragm in the pump body moves back and forth, thereby realizing the suction and discharge of liquid. The rear-mounted air valve is characterized by the air valve located at the rear of the pump, but the air valve cannot remain stable after adjustment due to the vibration of the pneumatic diaphragm pump, resulting in the problem of looseness after adjustment, resulting in the inability to control the flow normally; and the diaphragm pump is mostly fixed by bolts during installation, resulting in the need for tools when disassembling, which is more troublesome to install and disassemble. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In response to the problems existing in the prior art, the utility model provides a pneumatic diaphragm pump with a post-valve to solve the technical problem mentioned in the background technology that the air valve cannot remain stable after adjustment due to the vibration of the pneumatic diaphragm pump, resulting in looseness after adjustment, resulting in the inability to control the flow normally.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic diaphragm pump with a rear-mounted air valve, comprising a pneumatic diaphragm pump main body, a connecting pipe fixedly provided at the rear end of the pneumatic diaphragm pump main body, an air valve provided on the connecting pipe, a handwheel provided on the air valve, a circular hole provided on the upper end surface of the handwheel, a latch provided slidingly inside the circular hole, a slot provided on the upper end surface of the air valve, a plurality of slots provided and arranged in a circular shape, the lower end of the latch located inside the slot, a lifting block fixedly provided on the upper end of the latch, a spring fixedly provided between the lifting block and the handwheel, a connecting block fixedly provided on the lower end surface of the pneumatic diaphragm pump main body and located in the middle position, and a positioning hole provided on the connecting block.

[0007] The utility model is further configured such that a base is provided at the lower end of the pneumatic diaphragm pump body, sliding holes are opened on the upper end surface of the base and on both sides, sliding blocks are slidably provided inside the sliding holes, moving blocks are fixedly provided on the upper end surfaces of the sliding blocks, and positioning rods are fixedly provided on the inner walls of the moving blocks, and the positioning rods are located inside the positioning holes, so as to facilitate fixed installation of the pneumatic diaphragm pump body and the base.

[0008] The utility model is further configured such that a lead screw is rotatably provided inside the sliding hole, the lead screw is threadedly connected to the sliding block, and motors are fixedly provided on both side surfaces of the base, the motor is fixedly connected to the lead screw, so as to facilitate adjustment of the distance between the sliding blocks.

[0009] The utility model is further configured that square tubes are fixedly provided on the outer wall of the base and at the four corners, electric push rods are fixedly provided on the upper end surfaces of the square tubes, and the output ends of the electric push rods pass through the square tubes and are provided with lifting blocks to facilitate the movement of the lifting blocks.

[0010] The utility model is further configured that the lifting block is slidably installed with the square tube, the lower end surface of the lifting block is fixedly provided with a mounting frame, and the interior of the mounting frame is rotatably provided with wheels to facilitate the movement of the device.

[0011] The utility model is further configured that rubber pads are fixedly provided on the upper end surface of the base and on the four corners, and the upper end surfaces of the rubber pads are in contact with the lower end surfaces of the pneumatic diaphragm pump body, so as to facilitate supporting the pneumatic diaphragm pump body.

[0012] The utility model is further configured that guide blocks are fixedly provided on both sides of the sliding block, and guide grooves are correspondingly opened on the inner wall of the sliding hole. The guide blocks are slidably installed in the guide grooves to facilitate guiding the sliding block.

[0013] The utility model is further configured such that anti-skid pads are fixedly provided on the lower end surface of the base and on the four corners, so as to increase the friction between the base and the ground and protect the lower end surface of the base.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a pneumatic diaphragm pump with a rear-mounted air valve, which has the following beneficial effects:

[0016] 1. By setting the pneumatic diaphragm pump body, connecting pipe, air valve, handwheel, circular hole, latch, slot, lifting block and spring, the user can control the flow inside the air valve through the handwheel. Then the spring will push the latch into the slot to position the handwheel to prevent the handwheel from rotating when the pneumatic diaphragm pump body is working, which will affect the control accuracy.

[0017] 2. By setting the connecting block, positioning hole, base, sliding hole, sliding block, moving block, positioning rod, lead screw and motor, the user can control the motor to rotate the lead screw, so that the lead screw drives the sliding block and the moving block to move, and then the positioning rod enters the positioning hole to fix the pneumatic diaphragm pump body and the base for easy use.

[0018] 3. By setting up a square cylinder, an electric push rod, a lifting block, a mounting frame and wheels, the user can control the electric push rod to make its output end drive the lifting block and the wheels to move downward, so that the wheels are in contact with the ground, which is convenient for adjusting the position of the pneumatic diaphragm pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of a pneumatic diaphragm pump with a rear-mounted air valve when not in use;

[0020] Figure 2 This is an exploded view of the installation of the circular hole, latch, spring and lifting block on the handwheel;

[0021] Figure 3 The figure is a schematic diagram of the installation of the sliding hole, sliding block, moving block, positioning rod, lead screw and motor on the base;

[0022] Figure 4 It is a schematic diagram of the positions of the moving block, the positioning rod and the guide block on the sliding block;

[0023] Figure 5 It is a schematic diagram of the positions of the connecting block and the positioning holes on the main body of the pneumatic diaphragm pump;

[0024] Figure 6 This is a schematic diagram of the installation of the electric push rod, lifting block, mounting frame and wheels;

[0025] Figure 7 Schematic diagram of the positions of the sliding holes and anti-slip pads on the base.

[0026] In the figure: 1. pneumatic diaphragm pump body; 2. connecting pipe; 3. air valve; 4. hand wheel; 5. round hole; 6. latch; 7. slot; 8. lifting block; 9. spring; 10. connecting block; 11. positioning hole; 12. base; 13. sliding hole; 14. sliding block; 15. moving block; 16. positioning rod; 17. lead screw; 18. motor; 19. square cylinder; 20. electric push rod; 21. lifting block; 22. mounting frame; 23. wheel; 24. rubber pad; 25. guide block; 26. guide groove; 27. anti-slip pad. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0030] See also Figure 1-7 A pneumatic diaphragm pump with a rear-mounted air valve comprises a pneumatic diaphragm pump body 1, a connecting pipe 2 is fixedly provided at the rear end of the pneumatic diaphragm pump body 1, an air valve 3 is provided on the connecting pipe 2, a hand wheel 4 is provided on the air valve 3, a circular hole 5 is provided on the upper end surface of the hand wheel 4, a latch 6 is slidably provided inside the circular hole 5, a slot 7 is provided on the upper end surface of the air valve 3, a plurality of slots 7 are provided and arranged in a circular shape, a lifting block 8 is fixedly provided on the upper end of the latch 6, a spring 9 is fixedly provided between the lifting block 8 and the hand wheel 4, a connecting block 10 is fixedly provided on the lower end surface of the pneumatic diaphragm pump body 1 and located in the middle position, and a positioning hole 11 is provided on the connecting block 10.

[0031] In this embodiment, a base 12 is provided at the lower end of the pneumatic diaphragm pump body 1, and sliding holes 13 are opened on the upper end surface of the base 12 and on both sides. Sliding blocks 14 are slidably provided inside the sliding holes 13, and moving blocks 15 are fixedly provided on the upper end surfaces of the sliding blocks 14. Positioning rods 16 are fixedly provided on the inner walls of the moving blocks 15, and the positioning rods 16 are located inside the positioning holes 11. A lead screw 17 is rotatably provided inside the sliding holes 13, and the lead screw 17 is threadedly connected to the sliding blocks 14. Motors 18 are fixedly provided on both side surfaces of the base 12, and the motor 18 is fixedly connected to the lead screw 17. Guide blocks 25 are fixedly provided on both side surfaces of the sliding blocks 14, and guide grooves 26 are correspondingly opened on the inner walls of the sliding holes 13, and the guide blocks 25 and the guide grooves 26 are slidably installed.

[0032] More specifically, the user can turn the handwheel 4 by pulling the lifting block 8 to control the flow inside the air valve 3. Then the spring 9 will push the pin 6 into the slot 7 to position the handwheel 4 to prevent the handwheel 4 from rotating during operation of the pneumatic diaphragm pump body 1 and affecting the control accuracy. When the pneumatic diaphragm pump body 1 needs to be disassembled, the motor 18 can be controlled to rotate the screw 17, so that the screw 17 drives the sliding block 14 and the moving block 15 to move, thereby disengaging the positioning rod 16 from the positioning hole 11 for easy use.

[0033] See also Figure 1 and Figure 6As an implementation method for moving the device: square tubes 19 are fixedly provided on the outer wall of the base 12 and at the four corners, electric push rods 20 are fixedly provided on the upper end surface of the square tubes 19, the output ends of the electric push rods 20 pass through the square tubes 19 and are provided with lifting blocks 21, the lifting blocks 21 are slidably installed with the square tubes 19, the lower end surfaces of the lifting blocks 21 are fixedly provided with mounting frames 22, and wheels 23 are rotatably provided inside the mounting frames 22.

[0034] Specifically, the user can control the electric push rod 20 to make its output end drive the wheel 23 to move downward so that it contacts the ground, thereby facilitating the adjustment of the position of the pneumatic diaphragm pump body 1.

[0035] Please refer to Figure 1 and Figure 7 As a further implementation method for supporting the pneumatic diaphragm pump body 1: rubber pads 24 are fixedly provided on the upper end surface of the base 12 and at the four corners, the upper end surface of the rubber pads 24 contacts the lower end surface of the pneumatic diaphragm pump body 1, and anti-slip pads 27 are fixedly provided on the lower end surface of the base 12 and at the four corners.

[0036] Specifically, the rubber pad 24 can be provided to support the lower end of the pneumatic diaphragm pump body 1 and also to buffer the vibration generated by the pneumatic diaphragm pump body 1, making it convenient to use.

[0037] To sum up, when the overall equipment is in use: when the air valve 3 needs to be adjusted, the pin 6 can be disengaged from the slot 7 by pulling the lifting block 8, and then the hand wheel 4 can be rotated to control the flow inside the air valve 3, and then the lifting block 8 can be released. At this time, the spring 9 will push the pin 6 into the slot 7 to position the hand wheel 4 to prevent the hand wheel 4 from rotating during the operation of the pneumatic diaphragm pump body 1 and affecting the control accuracy. When the pneumatic diaphragm pump body 1 needs to be disassembled, the lead screw 17 can be rotated by controlling the motor 18, so that the lead screw 17 drives the sliding block 14 and the moving block 15 to move, and then the positioning rod 16 is disengaged from the positioning hole 11 for easy disassembly. When the position of the pneumatic diaphragm pump body 1 needs to be adjusted, the electric push rod 20 can be controlled so that its output end drives the lifting block 21 and the wheel 23 to move downward, so that the wheel 23 contacts the ground, which is convenient for adjusting the position of the pneumatic diaphragm pump body 1.

[0038] When the air valve 3 needs to be adjusted, the lifting block 8 can be pulled to disengage the pin 6 from the slot 7, and then the hand wheel 4 can be turned to control the flow inside the air valve 3. After that, the lifting block 8 is released and the spring 9 will push the pin 6 into the slot 7 to position the hand wheel 4, preventing the hand wheel 4 from rotating when the pneumatic diaphragm pump body 1 is working, thereby affecting the control accuracy.

[0039] When the pneumatic diaphragm pump body 1 needs to be disassembled, the motor 18 can be controlled to rotate the lead screw 17 so that the lead screw 17 drives the sliding block 14 and the moving block 15 to move, thereby disengaging the positioning rod 16 from the positioning hole 11 for easy disassembly.

[0040] When the position of the pneumatic diaphragm pump body 1 needs to be adjusted, the electric push rod 20 can be controlled so that its output end drives the lifting block 21 and the wheel 23 to move downward so that the wheel 23 contacts the ground, thereby facilitating the adjustment of the position of the pneumatic diaphragm pump body 1.

[0041] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pneumatic diaphragm pump with a rear-mounted air valve, comprising a pneumatic diaphragm pump body (1), characterized in that: A connecting pipe (2) is fixedly provided at the rear end of the pneumatic diaphragm pump body (1), an air valve (3) is provided on the connecting pipe (2), a hand wheel (4) is provided on the air valve (3), a circular hole (5) is provided on the upper end surface of the hand wheel (4), a latch (6) is slidably provided inside the circular hole (5), a slot (7) is provided on the upper end surface of the air valve (3), a plurality of slots (7) are provided and arranged in a circular shape, the lower end of the latch (6) is located inside the slot (7), a lifting block (8) is fixedly provided on the upper end of the latch (6), a spring (9) is fixedly provided between the lifting block (8) and the hand wheel (4), a connecting block (10) is fixedly provided on the lower end surface of the pneumatic diaphragm pump body (1) and located in the middle position, and a positioning hole (11) is provided on the connecting block (10).

2. The pneumatic diaphragm pump with a rear-mounted air valve according to claim 1, characterized in that: A base (12) is provided at the lower end of the pneumatic diaphragm pump body (1), and sliding holes (13) are provided on the upper end surface and on both sides of the base (12), and sliding blocks (14) are slidably provided inside the sliding holes (13), and moving blocks (15) are fixedly provided on the upper end surface of the sliding blocks (14), and positioning rods (16) are fixedly provided on the inner wall of the moving blocks (15), and the positioning rods (16) are located inside the positioning holes (11).

3. The pneumatic diaphragm pump with a rear-mounted air valve according to claim 2, characterized in that: A lead screw (17) is rotatably arranged inside the sliding hole (13), and the lead screw (17) is threadedly connected to the sliding block (14). Motors (18) are fixedly arranged on both side surfaces of the base (12), and the motor (18) is fixedly connected to the lead screw (17).

4. The pneumatic diaphragm pump with a rear-mounted air valve according to claim 2, characterized in that: A square tube (19) is fixedly provided on the outer wall of the base (12) and at the four corners, an electric push rod (20) is fixedly provided on the upper end surface of the square tube (19), and the output end of the electric push rod (20) passes through the square tube (19) and is provided with a lifting block (21).

5. The pneumatic diaphragm pump with a rear-mounted air valve according to claim 4, characterized in that: The lifting block (21) is slidably mounted on the square tube (19); a mounting frame (22) is fixedly mounted on the lower end surface of the lifting block (21); and wheels (23) are rotatably mounted inside the mounting frame (22).

6. The pneumatic diaphragm pump with a rear-mounted air valve according to claim 2, characterized in that: Rubber pads (24) are fixedly provided on the upper end surface of the base (12) and at the four corners, and the upper end surface of the rubber pads (24) contacts the lower end surface of the pneumatic diaphragm pump body (1).

7. The pneumatic diaphragm pump with a rear-mounted air valve according to claim 2, characterized in that: Guide blocks (25) are fixedly provided on both side surfaces of the sliding block (14), and guide grooves (26) are correspondingly provided on the inner wall of the sliding hole (13), and the guide blocks (25) and the guide grooves (26) are slidably installed.

8. The pneumatic diaphragm pump with a rear-mounted air valve according to claim 2, characterized in that: Anti-slip pads (27) are fixedly provided on the lower end surface of the base (12) and at the four corners.

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