Diaphragm pump with high sealing performance

Abstract

The diaphragm pump with the high sealing performance comprises a rear sealing plate and a motor, the motor is installed on the side wall of one side of the rear sealing plate, an eccentric block is installed at the output end of the motor, an extrusion wheel is installed on the surface of the eccentric block in a sleeved mode, a rear pressing piece is installed on the side wall of the other side of the rear sealing plate, and the rear pressing piece is installed on the side wall of the other side of the rear sealing plate. A shell is arranged on one side of the rear sealing plate, an inlet pipe is installed on the outer wall of one side of the shell, an outlet pipe is installed on the outer wall of the other side of the shell, a rubber coating diaphragm is arranged in the shell, a groove is formed in the inner wall of the rubber coating diaphragm, a lining is arranged in the groove and connected with an extrusion wheel, and the extrusion wheel is connected with the rubber coating diaphragm. And a sealing strip is mounted at the top end of the rubber coating diaphragm. According to the diaphragm pump, multi-position sealing can be conveniently carried out on the interior of the pump body, auxiliary sealing supporting can be conveniently carried out from the exterior of the pump body, the sealing performance of the diaphragm pump is improved, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of diaphragm pump, concretely to a diaphragm pump with strong sealing performance. BACKGROUND

[0002] Diaphragm pump, also known as diaphragm pump, is a kind of equipment that changes fluid flow by receiving control signal output by adjusting control unit and changing flow by power operation, its role in control process is to receive control signal of regulator or computer, thereby changing the flow of the medium to be adjusted, so that the parameter to be adjusted is maintained in the required range, to achieve the automation of production process, the characteristics of diaphragm pump include simple structure, convenient maintenance, and because oil or liquid is not used, it is very suitable for applications that require clean environment and are not affected by oil vapor pollution, with the rapid development of semiconductor manufacturing industry and electronic equipment industry, the demand for diaphragm vacuum pump is also increasing, so that diaphragm pump is more and more widely used in various industries and scientific and technological fields, the traditional diaphragm pump will appear oil leakage or other leakage after long time use, in order to improve the situation, so a diaphragm pump with strong sealing performance is provided.

[0003] As disclosed in a kind of diaphragm pump with the authorized announcement No. CN208431139U, including driving piece, shell and extrusion structure, shell is fixed to driving piece, driving piece includes driving piece output shaft, extrusion structure includes eccentric shaft and extrusion wheel, eccentric shaft is fixedly connected with driving piece output shaft, extrusion wheel is installed on eccentric shaft, diaphragm pump also includes diaphragm, diaphragm is fixed to extrusion wheel and located in shell;

[0004] Although it realizes that eccentric shaft rotates to drive extrusion wheel and diaphragm, diaphragm is extruded by extrusion wheel and shell, extrusion wheel and diaphragm are fixed to each other instead of doing circular motion, so there is no wear to diaphragm, its service life is multiplied and it does not need to replace pipe like peristaltic pump, unlike conventional diaphragm pump, there is no rocker that moves up and down inside, so the vibration is low, the noise is very low, the one-way valve inside conventional diaphragm pump is cancelled, so it can pass through crystalline particles, bundle-shaped impurities, and even block-shaped green moss can pass through;The patent discloses that fixed ring is arranged to improve the connection stability of extrusion wheel and diaphragm.

[0005] But it does not solve the problem that the existing diaphragm pump is not convenient for multi-position sealing of the inside of pump body when in use, is not conducive to auxiliary sealing support from the outside of pump body, and affects the sealing performance of diaphragm pump. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of diaphragm pump with strong sealing performance to solve the problem that diaphragm pump is not convenient for multi-position sealing of the inside of pump body in the above background art, is not conducive to auxiliary sealing support from the outside of pump body, and affects the sealing performance of diaphragm pump.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a diaphragm pump with strong sealing performance, comprising a rear sealing plate and a motor. The motor is mounted on one side wall of the rear sealing plate, and an eccentric block is mounted on the output end of the motor. A compression wheel is fitted on the surface of the eccentric block. A rear pressure member is mounted on the other side wall of the rear sealing plate. A housing is provided on one side of the rear sealing plate, and an inlet pipe is mounted on the outer wall of one side of the housing. An outlet pipe is mounted on the outer wall of the other side of the housing. A rubber-coated diaphragm is provided inside the housing, and a groove is installed on the inner wall of the rubber-coated diaphragm. A bushing is provided inside the groove and is connected to the compression wheel. A sealing strip is installed at the top of the rubber-coated diaphragm. A partition plate is provided above the rubber-coated diaphragm and is slidably connected to the housing. A front sealing plate is provided on one side of the housing, and a front pressure member is mounted on the side wall of the front sealing plate.

[0008] Preferably, a support frame is installed on the outer wall of the rear sealing plate below the inlet pipe and the outlet pipe, and a movable plate is provided on both sides of the support frame.

[0009] Preferably, an integrated frame is symmetrically installed on the side wall of the movable plate, and the integrated frame is connected to the front sealing plate and the rear sealing plate respectively.

[0010] Preferably, each of the integrated frames has a connecting buckle installed inside, and each connecting buckle has a spring installed on its surface.

[0011] Preferably, the side walls of the support frame are symmetrically equipped with interlocking columns, and the interlocking columns extend into the interior of the integrated frame.

[0012] Preferably, each of the interlocking columns has a symmetrically installed slot on its side wall, and each of the integrated frames on one side of the interlocking column has a movable shaft installed inside.

[0013] Preferably, rotating blocks are movably mounted on the surface of each movable shaft, and the rotating blocks are connected to springs.

[0014] Preferably, a right biting block is installed on the side wall of the support frame on one side of the interlocking column, and a left biting block is installed on the side wall of the movable plate on one side of the right biting block.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the diaphragm pump eliminates the structure of the fixing ring, making it suitable for applications with low-strength pump bodies, resulting in a more compact structure and cost savings; the diaphragm pump not only achieves convenient multi-position sealing inside the pump body and facilitates auxiliary sealing support from the outside of the pump body, but also improves the sealing performance of the diaphragm pump and reduces manufacturing costs.

[0016] First, the parts are assembled sequentially. The front and rear pressure components provide sealing support from both ends. The sealing strip provides sealing support between the rubber-coated diaphragm and the partition plate. The integrated frame is moved, aligned with the interlocking post, and the interlocking post is inserted into the interior of the integrated frame. Under the sliding engagement of the interlocking post and the rotating block, the interlocking post drives the rotating block to rotate around the movable axis. The spring provides elastic pulling on the rotating block. When the rotating block moves to the slot position, under the elastic support of the spring, the rotating block rotates back to its original position and engages in the slot, thereby locking the interlocking post inside the integrated frame. This completes the fixed connection between the support frame and the moving plate. The left and right interlocking blocks play an auxiliary engaging role. This method completes the auxiliary sealing between the front sealing plate, the outer shell, and the rear sealing plate. Then, it is sealed again with long bolts to ensure the sealing performance of the diaphragm pump. This achieves convenient multi-position sealing inside the pump body, facilitates auxiliary sealing support from outside the pump body, and improves the sealing performance of the diaphragm pump.

[0017] By directly connecting the eccentric block and the extrusion wheel to the bushing, and engaging the bushing with the groove, the bushing can directly drive the rubber-coated diaphragm to rotate, thereby simplifying the internal structure and reducing manufacturing costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional exploded structure diagram of the present invention;

[0020] Figure 3 This is a three-dimensional exploded view of the coated film of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the integrated frame of this utility model;

[0022] Figure 5 This is a front view cross-sectional structural diagram of the integrated frame of this utility model.

[0023] In the diagram: 1. Motor; 2. Front sealing plate; 3. Support frame; 4. Rear sealing plate; 5. Integrated frame; 6. Front pressing component; 7. Housing; 8. Bushing; 9. Rubber-coated diaphragm; 10. Eccentric block; 11. Extrusion roller; 12. Rear pressing component; 13. Groove; 14. Divider plate; 15. Inlet pipe; 16. Outlet pipe; 17. Sealing strip; 18. Spring; 19. Rotating block; 20. Movable shaft; 21. Slot; 22. Clamping post; 23. Connecting buckle; 24. Left clamping block; 25. Right clamping block; 26. Moving plate. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Please see Figures 1-5 An embodiment of this utility model provides a diaphragm pump with strong sealing performance, including a rear sealing plate 4 and a motor 1. The motor 1 is installed on one side wall of the rear sealing plate 4, and an eccentric block 10 is installed at the output end of the motor 1. An extrusion wheel 11 is fitted on the surface of the eccentric block 10. A rear pressure member 12 is installed on the other side wall of the rear sealing plate 4. A housing 7 is provided on one side of the rear sealing plate 4. An inlet pipe 15 is installed on the outer wall of one side of the housing 7, and an outlet pipe 16 is installed on the outer wall of the other side of the housing 7. A rubber-coated diaphragm 9 is provided inside the housing 7. A groove 13 is installed on the inner wall of the rubber-coated diaphragm 9. A bushing 8 is provided inside the groove 13 and is connected to the extrusion wheel 11. A sealing strip 17 is installed at the top of the rubber-coated diaphragm 9. A partition plate 14 is provided above the rubber-coated diaphragm 9 and is slidably connected to the housing 7. A front sealing plate 2 is provided on one side of the housing 7, and a front pressure member 6 is installed on the side wall of the front sealing plate 2.

[0026] First, assemble the parts in sequence. The front pressure piece 6 and the rear pressure piece 12 provide sealing support from both ends. The sealing strip 17 provides sealing support between the rubber-coated diaphragm 9 and the partition plate 14. Move the integrated frame 5, align the integrated frame 5 with the fitting post 22, and insert the fitting post 22 into the interior of the integrated frame 5. Under the sliding engagement of the fitting post 22 and the rotating block 19, the fitting post 22 drives the rotating block 19 to rotate around the movable shaft 20. The spring 18 elastically pulls the rotating block 19. When the rotating block 19 moves to the slot 21 position, the elastic support of the spring 18... When the support is lowered, the rotating block 19 rotates and resets, engaging inside the slot 21, thereby securing the interlocking column 22 inside the integrated frame 5 to complete the fixed connection between the support frame 3 and the moving plate 26. The left interlocking block 24 and the right interlocking block 25 serve as auxiliary interlocking components. This method completes the auxiliary sealing between the front sealing plate 2, the outer shell 7, and the rear sealing plate 4. Afterward, it is sealed again with long bolts to ensure the sealing performance of the diaphragm pump. This achieves convenient multi-position sealing inside the pump body, facilitates auxiliary sealing support from outside the pump body, and improves the sealing performance of the diaphragm pump.

[0027] Support frames 3 are installed on the outer walls of the rear sealing plate 4 below the inlet pipe 15 and the outlet pipe 16, and movable plates 26 are provided on both sides of the support frame 3.

[0028] An integrated frame 5 is symmetrically installed on the side wall of the movable plate 26, and the integrated frame 5 is connected to the front sealing plate 2 and the rear sealing plate 4 respectively.

[0029] The integrated frame 5 is equipped with connecting buckles 23 inside, and springs 18 are installed on the surface of each connecting buckle 23. The side walls of the support frame 3 are symmetrically equipped with fitting columns 22, and the fitting columns 22 extend into the interior of the integrated frame 5.

[0030] The side walls of the fitting column 22 are symmetrically equipped with slots 21. The integrated frame 5 on one side of the fitting column 22 is equipped with a movable shaft 20. The surface of the movable shaft 20 is movably equipped with a rotating block 19, and the rotating block 19 is connected to the spring 18.

[0031] Right biting blocks 25 are installed on the side wall of the support frame 3 on one side of the interlocking column 22, and left biting blocks 24 are installed on the side wall of the movable plate 26 on one side of the right biting block 25.

[0032] The eccentric block 10 and the extrusion wheel 11 are directly connected to the bushing 8, and the bushing 8 is engaged with the groove 13, so that the rubber-coated diaphragm 9 can be directly driven to rotate through the bushing 8, thereby simplifying the internal structure and reducing manufacturing costs.

[0033] Working principle: First, the parts are assembled in sequence. The front pressure piece 6 and the rear pressure piece 12 provide sealing support from both ends. The sealing strip 17 provides sealing support between the rubber-coated diaphragm 9 and the partition plate 14. The integrated frame 5 is moved, aligned with the fitting post 22, and the fitting post 22 is inserted into the interior of the integrated frame 5. Under the sliding engagement of the fitting post 22 and the rotating block 19, the fitting post 22 drives the rotating block 19 to rotate around the movable shaft 20. The spring 18 elastically pulls the rotating block 19. When the rotating block 19 moves to the slot 21 position, under the elastic support of the spring 18, the rotating block 19 rotates. The moving plate 22 is reset and engaged inside the slot 21, thereby securing the interlocking column 22 inside the integrated frame 5 to complete the fixed connection between the support frame 3 and the moving plate 26. The left interlocking block 24 and the right interlocking block 25 serve as auxiliary interlocking components. This method completes the auxiliary sealing between the front sealing plate 2, the outer shell 7, and the rear sealing plate 4. Afterward, it is sealed again with long bolts to ensure the sealing performance of the diaphragm pump. The eccentric block 10 and the extrusion wheel 11 are directly connected to the bushing 8, and the bushing 8 is engaged with the groove 13. This allows the bushing 8 to directly drive the rubber-coated diaphragm 9 to rotate, simplifying the internal structure and reducing manufacturing costs.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A diaphragm pump with strong sealing performance, comprising a rear sealing plate (4) and a motor (1), characterized in that: A motor (1) is installed on one side wall of the rear sealing plate (4). An eccentric block (10) is installed at the output end of the motor (1). An extrusion wheel (11) is fitted on the surface of the eccentric block (10). A rear pressing component (12) is installed on the other side wall of the rear sealing plate (4). A housing (7) is provided on one side of the rear sealing plate (4). An inlet pipe (15) is installed on the outer wall of one side of the housing (7). An outlet pipe (16) is installed on the outer wall of the other side of the housing (7). The interior of the housing (7) is provided with... A rubber-coated diaphragm (9) is provided with a groove (13) on its inner wall. A bushing (8) is provided inside the groove (13) and is connected to a compression wheel (11). A sealing strip (17) is provided at the top of the rubber-coated diaphragm (9). A partition plate (14) is provided above the rubber-coated diaphragm (9) and is slidably connected to the outer shell (7). A front sealing plate (2) is provided on one side of the outer shell (7), and a front pressing member (6) is installed on the side wall of the front sealing plate (2).

2. The diaphragm pump with strong sealing performance according to claim 1, characterized in that: Support frames (3) are installed on the outer walls of the rear sealing plate (4) below the inlet pipe (15) and the outlet pipe (16), and movable plates (26) are provided on both sides of the support frame (3).

3. A diaphragm pump with strong sealing performance according to claim 2, characterized in that: An integrated frame (5) is symmetrically installed on the side wall of the movable plate (26), and the integrated frame (5) is connected to the front sealing plate (2) and the rear sealing plate (4) respectively.

4. A diaphragm pump with strong sealing performance according to claim 3, characterized in that: Each of the integrated frames (5) has a connecting buckle (23) installed inside, and each of the connecting buckles (23) has a spring (18) installed on its surface.

5. A diaphragm pump with strong sealing performance according to claim 2, characterized in that: The side walls of the support frame (3) are symmetrically equipped with interlocking columns (22), and the interlocking columns (22) extend into the interior of the integrated frame (5).

6. A diaphragm pump with strong sealing performance according to claim 5, characterized in that: Each of the interlocking columns (22) has a symmetrically installed slot (21) on its side wall, and each of the integrated frames (5) on one side of the interlocking columns (22) has a movable shaft (20) installed inside.

7. A diaphragm pump with strong sealing performance according to claim 6, characterized in that: Rotating blocks (19) are movably mounted on the surface of each of the movable shafts (20), and the rotating blocks (19) are connected to the springs (18).

8. A diaphragm pump with strong sealing performance according to claim 5, characterized in that: A right biting block (25) is installed on the side wall of the support frame (3) on one side of the interlocking column (22), and a left biting block (24) is installed on the side wall of the movable plate (26) on one side of the right biting block (25).

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