Diaphragm air pump sealing structure

Abstract

The utility model discloses a diaphragm air pump sealing structure which comprises a diaphragm air pump, two connecting seats are symmetrically arranged on the two sides of the diaphragm air pump, first sealing gaskets are arranged on the sides, away from the diaphragm air pump, of the connecting seats, and connecting shells are arranged on the sides, away from the connecting seats, of the first sealing gaskets. A first groove is formed in the portion, close to the first sealing gasket, of the connecting shell, a movable plate is slidably connected to the interior of the first groove, a connecting spring is fixedly connected between the movable plate and the first groove, a sealing plate is fixedly connected to the side, away from the connecting spring, of the movable plate, and the sealing plate is slidably connected to the interior of the first groove. After the connecting shell and the connecting seat are fixed, the first diaphragm and the second diaphragm are fixed between the sealing plate and the second sealing gasket, and when the connecting seat and the connecting shell are loosened, the connecting spring pushes the movable plate and the sealing plate to move and enables the sealing plate to abut against the second diaphragm all the time, so that the sealing effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm air pump technology, specifically a diaphragm air pump sealing structure. Background Technology

[0002] A diaphragm air pump is a new type of conveying machinery that uses compressed air as a power source. It can pump out all kinds of corrosive liquids, liquids containing particles, and liquids that are highly viscous, volatile, flammable, or highly toxic. The diaphragm air pump consists of two main parts: an airflow structure and a liquid flow structure, which are completely isolated by diaphragms on both sides.

[0003] Since both gas and liquid flow occur inside a diaphragm pump, the sealing structure is crucial to its performance and reliability. However, after the sealing structure is installed on the diaphragm pump using fastening components, the left and right mechanical movement of the diaphragm pump can easily cause the fastening components to separate from the diaphragm pump, thereby reducing the sealing effect of the sealing structure. Utility Model Content

[0004] The purpose of this invention is to provide a diaphragm air pump sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a diaphragm air pump sealing structure, comprising a diaphragm air pump, two connecting seats symmetrically arranged on both sides of the diaphragm air pump, a first sealing gasket provided on the side of the connecting seat away from the diaphragm air pump, a connecting housing provided on the side of the first sealing gasket away from the connecting seat, a first groove provided on the connecting housing near the first sealing gasket, a movable plate slidably connected inside the first groove, a connecting spring fixedly connected between the movable plate and the first groove, a sealing plate fixedly connected on the side of the movable plate away from the connecting spring, and the sealing plate slidably connected inside the first groove.

[0006] As a further preferred embodiment of this technical solution, a first bolt is provided between the connecting seat and the connecting housing. A spring plate is movably sleeved on the surface of the first bolt. The spring plate abuts against the side of the connecting housing away from the first sealing gasket. A nut is threaded onto the surface of the first bolt. The nut is located on the side of the connecting seat near the diaphragm air pump.

[0007] As a further preferred embodiment of this technical solution, the connecting seat has an installation groove on the side near the first sealing gasket, and a second sealing gasket is engaged inside the installation groove. The second sealing gasket has a slot on the side near the installation groove, and the slot and the protrusion inside the installation groove are compatible.

[0008] As a further preferred embodiment of this technical solution, the diaphragm air pump is provided with a connecting rod inside, and a first diaphragm is symmetrically arranged at both ends of the connecting rod, and a second diaphragm is arranged on the side of the first diaphragm away from the connecting rod.

[0009] As a further preferred embodiment of this technical solution, threaded grooves are provided at both ends of the connecting rod, and the first diaphragm and the second diaphragm are located between the sealing plate and the second sealing gasket.

[0010] As a further preferred embodiment of this technical solution, the first diaphragm is made of rubber, and the second diaphragm is made of polytetrafluoroethylene.

[0011] As a further preferred embodiment of this technical solution, two cover plates are symmetrically arranged on both sides of the first diaphragm and the second diaphragm. A second groove is provided inside the cover plate, an O-ring is provided inside the second groove, and a second bolt is provided inside the cover plate. The second bolt passes through the cover plate, the first diaphragm and the second diaphragm and is threadedly connected to the connecting rod.

[0012] This utility model provides a diaphragm air pump sealing structure, which has the following beneficial effects:

[0013] (1) This utility model places the first sealing gasket between the connecting housing and the connecting seat, and fixes the positions of the two with the first bolt and nut. At the same time, the first diaphragm and the second diaphragm are fixed between the sealing plate and the second sealing gasket. When the diaphragm air pump works, causing the connecting seat and the connecting housing to move, the elastic force of the connecting spring pushes the movable plate and the sealing plate to slide inside the first groove, and makes the sealing plate always abut against the second diaphragm, thereby ensuring the overall sealing effect.

[0014] (2) This utility model fixes the position of the second sealing gasket by installing the second sealing gasket in the mounting groove and engaging it with the protrusion in the mounting groove through the slot, so as to avoid displacement during use and ensure the sealing effect with the first diaphragm. A spring sheet is provided between the first bolt and the connecting housing. When the diaphragm air pump works and causes the nut to loosen, the spring sheet rebounds and squeezes the connecting housing and the first sealing gasket, thereby ensuring the sealing of the connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the first sealing gasket structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the mounting groove and the second sealing gasket structure of this utility model;

[0018] Figure 4This is a schematic cross-sectional view of the connecting shell structure of this utility model;

[0019] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 6 This is a schematic diagram of the first and second diaphragms of this utility model.

[0021] In the diagram: 1. Diaphragm air pump; 2. Connecting seat; 3. First sealing gasket; 4. Connecting housing; 5. First groove; 6. Connecting spring; 7. Movable plate; 8. Sealing plate; 9. First bolt; 10. Spring plate; 11. Nut; 12. Mounting groove; 13. Second sealing gasket; 14. Slot; 15. Connecting rod; 16. Second bolt; 17. First diaphragm; 18. Second diaphragm; 19. Cover plate; 20. Second groove; 21. O-ring. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1 to 6 As shown, in this embodiment, a diaphragm air pump sealing structure includes a diaphragm air pump 1. Two connecting seats 2 are symmetrically arranged on both sides of the diaphragm air pump 1. A first sealing gasket 3 is provided on the side of the connecting seat 2 away from the diaphragm air pump 1. A connecting housing 4 is provided on the side of the first sealing gasket 3 away from the connecting seat 2. A first groove 5 is opened on the connecting housing 4 near the first sealing gasket 3. A movable plate 7 is slidably connected inside the first groove 5. A connecting spring 6 is fixedly connected between the movable plate 7 and the first groove 5. A sealing plate 8 is fixedly connected on the side of the movable plate 7 away from the connecting spring 6. The sealing plate 8 is slidably connected inside the first groove 5.

[0024] The first sealing gasket 3 is placed between the connecting housing 4 and the connecting seat 2, and the positions of the two are fixed by the first bolt 9 and the nut 11. At the same time, the first diaphragm 17 and the second diaphragm 18 are fixed between the sealing plate 8 and the second sealing gasket 13. When the diaphragm air pump 1 works and causes the connecting seat 2 and the connecting housing 4 to loosen, the elastic force of the connecting spring 6 pushes the movable plate 7 and the sealing plate 8 to slide inside the first groove 5, so that the sealing plate 8 always abuts against the second diaphragm 18, and the first diaphragm 17 always contacts the second sealing gasket 13, thereby ensuring the overall sealing effect.

[0025] A first bolt 9 is provided between the connecting seat 2 and the connecting housing 4. A spring plate 10 is movably sleeved on the surface of the first bolt 9. The spring plate 10 and the side of the connecting housing 4 away from the first sealing gasket 3 abut against each other. A nut 11 is threadedly connected to the surface of the first bolt 9. The nut 11 is located on the side of the connecting seat 2 close to the diaphragm air pump 1.

[0026] The connecting seat 2 has an installation groove 12 on the side near the first sealing gasket 3. The second sealing gasket 13 is engaged inside the installation groove 12. The second sealing gasket 13 has a slot 14 on the side near the installation groove 12. The slot 14 and the protrusion inside the installation groove 12 are compatible.

[0027] The second sealing gasket 13 is installed in the mounting groove 12 and engages with the protrusion in the mounting groove 12 through the slot 14, thereby fixing the position of the second sealing gasket 13 and preventing displacement during use, so as to ensure the sealing effect with the first diaphragm 17. A spring plate 10 is provided between the first bolt 9 and the connecting housing 4. When the diaphragm air pump 1 works and causes the nut 11 to loosen, the spring plate 10 rebounds and squeezes the connecting housing 4 and the first sealing gasket 3, thereby ensuring the sealing of the connection.

[0028] The diaphragm air pump 1 has a connecting rod 15 inside, and first diaphragms 17 are symmetrically arranged at both ends of the connecting rod 15. A second diaphragm 18 is arranged on the side of the first diaphragm 17 away from the connecting rod 15.

[0029] Both ends of the connecting rod 15 are provided with threaded grooves, and the first diaphragm 17 and the second diaphragm 18 are located between the sealing plate 8 and the second sealing gasket 13.

[0030] The first diaphragm 17 is made of rubber, and the second diaphragm 18 is made of polytetrafluoroethylene.

[0031] The diaphragm assembly is composed of a first diaphragm 17 and a second diaphragm 18. The first diaphragm 17 is made of rubber, which has good elasticity, flexibility and durability, and its deformation ability can ensure contact with the second sealing gasket 13. The second diaphragm 18 is made of polytetrafluoroethylene, which has excellent corrosion resistance and high temperature resistance, thereby increasing the application range and service life of the diaphragm air pump 1.

[0032] Two cover plates 19 are symmetrically arranged on both sides of the first diaphragm 17 and the second diaphragm 18. A second groove 20 is opened inside the cover plate 19, and an O-ring 21 is arranged inside the second groove 20. A second bolt 16 is arranged inside the cover plate 19, and the second bolt 16 passes through the cover plate 19, the first diaphragm 17 and the second diaphragm 18 and is threadedly connected to the connecting rod 15.

[0033] By setting an O-ring 21 inside the cover plate 19, the contact between the cover plate 19 and the first diaphragm 17 and the second diaphragm 18 is ensured, and the sealing at the connection with the second bolt 16 is ensured to prevent media leakage.

[0034] This utility model provides a diaphragm air pump sealing structure, the specific working principle of which is as follows:

[0035] In use, the second sealing gasket 13 is installed in the mounting groove 12, the O-ring 21 is placed inside the second groove 20 of the cover plate 19, and the two cover plates 19 are placed on both sides of the diaphragm composed of the first diaphragm 17 and the second diaphragm 18, respectively. The diaphragm assembly is fixed to the connecting rod 15 using the second bolt 16. The first sealing gasket 3 is placed between the connecting seat 2 and the connecting housing 4, and the positions of the two are fixed using the first bolt 9 and the nut 11, thereby completing the installation of the sealing structure. When the diaphragm air pump 1 operates, causing the connecting seat 2 and the connecting housing 4 to become loose, the elastic force of the connecting spring 6 pushes the movable plate 7 and the sealing plate 8 to slide inside the first groove 5, so that the sealing plate 8 always abuts against the second diaphragm 18. At the same time, the spring plate 10 rebounds and squeezes the connecting housing 4 and the first sealing gasket 3 to ensure the sealing of the connection.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A diaphragm air pump sealing structure, comprising a diaphragm air pump (1), characterized in that: Two connecting seats (2) are symmetrically arranged on both sides of the diaphragm air pump (1). A first sealing gasket (3) is provided on the side of the connecting seat (2) away from the diaphragm air pump (1). A connecting housing (4) is provided on the side of the first sealing gasket (3) away from the connecting seat (2). A first groove (5) is opened on the connecting housing (4) near the first sealing gasket (3). A movable plate (7) is slidably connected inside the first groove (5). A connecting spring (6) is fixedly connected between the movable plate (7) and the first groove (5). A sealing plate (8) is fixedly connected on the side of the movable plate (7) away from the connecting spring (6). The sealing plate (8) is slidably connected inside the first groove (5).

2. The diaphragm air pump sealing structure according to claim 1, characterized in that: A first bolt (9) is provided between the connecting seat (2) and the connecting housing (4). A spring plate (10) is movably sleeved on the surface of the first bolt (9). The spring plate (10) and the side of the connecting housing (4) away from the first sealing gasket (3) abut against each other. A nut (11) is threadedly connected to the surface of the first bolt (9). The nut (11) is located on the side of the connecting seat (2) near the diaphragm air pump (1).

3. The diaphragm air pump sealing structure according to claim 1, characterized in that: The connecting seat (2) has an installation groove (12) on the side near the first sealing gasket (3). The second sealing gasket (13) is engaged inside the installation groove (12). The second sealing gasket (13) has a slot (14) on the side near the installation groove (12). The slot (14) and the protrusion inside the installation groove (12) are compatible.

4. The diaphragm air pump sealing structure according to claim 1, characterized in that: The diaphragm air pump (1) is provided with a connecting rod (15) inside. The two ends of the connecting rod (15) are symmetrically provided with a first diaphragm (17), and a second diaphragm (18) is provided on the side of the first diaphragm (17) away from the connecting rod (15).

5. The diaphragm air pump sealing structure according to claim 4, characterized in that: The connecting rod (15) has threaded grooves at both ends inside, and the first diaphragm (17) and the second diaphragm (18) are located between the sealing plate (8) and the second sealing gasket (13).

6. The diaphragm air pump sealing structure according to claim 4, characterized in that: The first diaphragm (17) is made of rubber, and the second diaphragm (18) is made of polytetrafluoroethylene.

7. The diaphragm air pump sealing structure according to claim 4, characterized in that: Two cover plates (19) are symmetrically arranged on both sides of the first diaphragm (17) and the second diaphragm (18). A second groove (20) is provided inside the cover plate (19). An O-ring (21) is provided inside the second groove (20). A second bolt (16) is provided inside the cover plate (19). The second bolt (16) passes through the cover plate (19), the first diaphragm (17) and the second diaphragm (18) and is threadedly connected to the connecting rod (15).

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