Diaphragm sealing and water leakage preventing structure of diaphragm booster pump

Abstract

The utility model relates to the technical field of diaphragm booster pumps, in particular to a diaphragm booster pump diaphragm sealing water leakage prevention structure which comprises an upper shell and a lower shell, the upper shell is fixedly connected to the outer side of the lower shell through a pump head screw, a diaphragm is installed in the lower shell, a diaphragm sealing gasket is arranged on the outer side of the diaphragm, and the diaphragm sealing gasket is fixedly connected to the lower shell through a pump head screw. The diaphragm sealing gasket is annularly arranged on the peripheral side of the diaphragm, a suction valve is arranged in the upper shell, a control body is installed at one end of the diaphragm, a piston is arranged in the upper shell, a piston sealing gasket is arranged on the outer side of the piston, a vibrating body fixing frame is arranged in the lower shell, a screw is arranged on the outer side of the piston, and the vibrating body sealing gasket is arranged on the outer side of the vibrating body fixing frame. And the other end of the diaphragm is fixedly connected with the vibrating body fixing frame through a piston and a screw. The sealing ribs are additionally arranged on the periphery of the sealing face of the diaphragm, and materials such as rubber with small irrecoverable deformation after compression are additionally arranged above the diaphragm, so that the sealing performance of the diaphragm is enhanced, and the reliability of a product in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm booster pumps, in particular to a diaphragm booster pump diaphragm sealing and water leakage prevention structure. Background Art

[0002] Diaphragm booster pumps are suitable for various pressure-boosting applications. They utilize the reciprocating motion of a diaphragm (elastic membrane) to draw in and discharge fluids. These pumps are characterized by their simple structure, smooth operation, and leak-free operation, making them suitable for conveying a wide variety of media. In recent years, diaphragm booster pumps have been frequently used for pressure boosting in reverse osmosis water purifiers, hence their nicknames: RO pumps or RO booster pumps.

[0003] With respect to the above-mentioned related technologies, the existing diaphragm booster pump has the defect that the common failure of the diaphragm booster pump is poor sealing failure at the diaphragm. The diaphragm material widely adopts thermoplastic elastomers such as TPV, which has large irreversible deformation after compression. Often after the product has been used for a period of time, the sealing at the diaphragm deteriorates, which leads to sealing failure and abnormalities such as water pump leakage. Therefore, the utility model provides a diaphragm booster pump diaphragm sealing and anti-leakage structure. Utility Model Content

[0004] The purpose of the present application is to provide a diaphragm booster pump diaphragm sealing and anti-leakage structure to solve the common defects of the diaphragm booster pump mentioned in the above background technology, which are mostly poor sealing failure at the diaphragm. The diaphragm material widely uses thermoplastic elastomers such as TPV, which have large irreversible deformation after compression. Often after the product has been used for a period of time, the seal at the diaphragm deteriorates, which leads to sealing failure and abnormal problems such as water pump leakage.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a diaphragm booster pump diaphragm sealing and anti-leakage structure, comprising an upper shell and a lower shell, the upper shell being fixedly connected to the outside of the lower shell by pump head screws, a diaphragm being installed in the lower shell, a diaphragm sealing gasket being arranged on the outside of the diaphragm, the diaphragm sealing gasket being arranged in a ring shape on the circumference of the diaphragm, and an intake valve being arranged in the upper shell.

[0006] Preferably, a control body is installed at one end of the diaphragm, a piston is provided in the upper shell, and a piston sealing gasket is provided on the outer side of the piston.

[0007] Preferably, a vibrating body fixing frame is provided in the lower shell, a screw is provided on the outer side of the piston, and the other end of the diaphragm is fixedly connected to the vibrating body fixing frame through the piston and the screw.

[0008] Preferably, a first bearing is fixedly connected to the vibrating body fixing frame, an eccentric wheel is fixedly connected to the inner hole of the first bearing, and a bearing pressure plate adapted to the first bearing is installed on the outer side of the vibrating body fixing frame.

[0009] Preferably, a front end cover is installed on the outer side of the lower shell, a second bearing is provided on the outer side of the front end cover, and the eccentric wheel is connected to the second bearing.

[0010] Preferably, a stepped hole is opened at the center of the front end cover, and a bearing inner sleeve is arranged in the stepped hole.

[0011] In summary, the technical effects and advantages of the utility model are:

[0012] In the utility model, sealing ribs are added around the sealing surface of the diaphragm, and materials with small irreversible deformation after compression, such as rubber, are added above the diaphragm to enhance the sealing performance of the diaphragm and improve the reliability of the product during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the overall perspective axial structure of the utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0016] Figure 3 Schematic diagram of the structure of the diaphragm and diaphragm sealing gasket.

[0017] In the figure: 1. Upper housing; 2. Suction valve; 3. Control body; 4. Piston seal; 5. Piston; 6. Diaphragm; 7. Lower housing; 8. Vibrating body fixing bracket; 9. Screw; 10. First bearing; 11. Bearing pressure plate; 12. Eccentric wheel; 13. Front cover; 14. Second bearing; 15. Bearing inner sleeve; 16. Diaphragm seal. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0020] Example: Reference Figure 1-3 The diaphragm booster pump diaphragm sealing and anti-leakage structure shown in the figure includes an upper shell 1 and a lower shell 7. The upper shell 1 is fixedly connected to the outer side of the lower shell 7 by a pump head screw. A diaphragm 6 is installed in the lower shell 7. A diaphragm sealing gasket 16 is provided on the outer side of the diaphragm 6. The diaphragm sealing gasket 16 is arranged in an annular shape on the circumference of the diaphragm 6. A suction valve 2 is provided in the upper shell 1; a control body 3 is installed at one end of the diaphragm 6, a piston 5 is provided in the upper shell 1, and a piston sealing gasket 4 is provided on the outer side of the piston 5; a vibrating body fixing frame 8 is provided in the lower shell 7, and a screw is provided on the outer side of the piston 5. Nail 9, the other end of the diaphragm 6 is fixedly connected to the vibrating body fixing frame 8 through the piston 5 and the screw 9; a first bearing 10 is fixedly connected to the vibrating body fixing frame 8, and an eccentric wheel 12 is fixedly connected to the inner hole of the first bearing 10, and a bearing pressure plate 11 adapted to the first bearing 10 is installed on the outer side of the vibrating body fixing frame 8; a front end cover 13 is installed on the outer side of the lower shell 7, and a second bearing 14 is provided on the outer side of the front end cover 13, and the eccentric wheel 12 is connected to the second bearing 14; a stepped hole is opened at the center position of the front end cover 13, and a bearing inner sleeve 15 is provided in the stepped hole.

[0021] In this embodiment, the diaphragm 6 can be deformed and squeezed under the eccentric swing movement of the vibrating body fixing frame 8, thereby providing a change in the volume of the cavity to achieve water pumping. By adding a diaphragm sealing gasket 16 around the sealing surface of the diaphragm 6 and adding rubber or other materials with less deformation after compression above the diaphragm 6, the sealing of the diaphragm is enhanced and the reliability of the product during use is improved.

[0022] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A diaphragm booster pump diaphragm sealing and anti-leakage structure, comprising an upper shell (1) and a lower shell (7), characterized in that: The upper shell (1) is fixedly connected to the outer side of the lower shell (7) by means of pump head screws. A diaphragm (6) is installed in the lower shell (7). A diaphragm sealing gasket (16) is provided on the outer side of the diaphragm (6). The diaphragm sealing gasket (16) is provided in an annular shape on the circumference of the diaphragm (6). A suction valve (2) is provided in the upper shell (1).

2. The diaphragm booster pump diaphragm sealing and water leakage prevention structure according to claim 1, characterized in that: A control body (3) is mounted on one end of the diaphragm (6), a piston (5) is disposed in the upper housing (1), and a piston sealing gasket (4) is disposed on the outer side of the piston (5).

3. The diaphragm booster pump diaphragm sealing and water leakage prevention structure according to claim 2, characterized in that: A vibrating body fixing frame (8) is provided in the lower shell (7), a screw (9) is provided on the outside of the piston (5), and the other end of the diaphragm (6) is fixedly connected to the vibrating body fixing frame (8) through the piston (5) and the screw (9).

4. The diaphragm booster pump diaphragm sealing and water leakage prevention structure according to claim 3, characterized in that: A first bearing (10) is fixedly connected to the vibrating body fixing frame (8), an eccentric wheel (12) is fixedly connected to the inner hole of the first bearing (10), and a bearing pressure plate (11) adapted to the first bearing (10) is installed on the outer side of the vibrating body fixing frame (8).

5. The diaphragm booster pump diaphragm sealing and water leakage prevention structure according to claim 4, characterized in that: A front end cover (13) is installed on the outer side of the lower shell (7), a second bearing (14) is provided on the outer side of the front end cover (13), and the eccentric wheel (12) is connected to the second bearing (14).

6. The diaphragm booster pump diaphragm sealing and water leakage prevention structure according to claim 5, characterized in that: A stepped hole is provided at the center of the front end cover (13), and a bearing inner sleeve (15) is provided in the stepped hole.

Images