CN212868624U

CN212868624U - Adjustable liquid pressure reducing valve

Info

Publication number: CN212868624U
Application number: CN202021606197.0U
Authority: CN
Inventors: 李伟
Original assignee: Zhongduo Shanghai Electromechanical Technology Co ltd
Current assignee: Zhongduo Shanghai Electromechanical Technology Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-04-02
Anticipated expiration: 2030-08-05

Abstract

The utility model provides an adjustable liquid pressure reducing valve, which comprises a water inlet pipe, a connecting piece, a sealing gasket, an upper connecting cover, a diaphragm, a lower connecting cover, a first pressure plate and a water outlet pipe; the lower end of the water inlet pipe is fixed with the connecting piece, a sealing gasket is arranged below the connecting piece, the upper connecting cover, the diaphragm and the lower connecting cover are sequentially fixed from top to bottom, an air cavity is formed between the upper connecting cover and the diaphragm, a liquid cavity is formed between the diaphragm and the lower connecting cover, and the liquid cavity is communicated with the water outlet pipe; a first pressure plate and a pressure adjusting spring are arranged above the upper connecting cover, and the first pressure plate transmits pressure to the upper surface of the diaphragm through a pressure piece; the diaphragm below sets up sealed the pad, and sealed below of filling up sets up the compression spring that resets, and sealed pad and compression spring that resets all are located the liquid chamber, and the bottom and the outlet pipe intercommunication of lower joint cover. The adjustable liquid pressure reducing valve of the utility model can manually adjust the fluid pressure at the outlet of the valve; the structure body is easy to disassemble, and can be used for carrying out work of partial disassembly, maintenance, cleaning, replacement and the like on components.

Description

Adjustable liquid pressure reducing valve

Technical Field

The utility model relates to a decompression equipment technical field specifically, relates to a liquid relief pressure valve with adjustable.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range.

Upon search of the prior art, the invention patent with application number 201410497556.6 discloses a pressure relief valve for fluid and gaseous media, more particularly to regulate the pressure in a pipe system, preferably in a building, comprising a housing, preferably consisting of at least an upper part and a lower part; an inner shell, wherein the inner shell has a riser bore; a partition for dividing the housing into a fluid-free region and a fluid-flow region; a pressure regulating unit, wherein the pressure regulating unit comprises a shaft, a spring valve, a spring support and at least one spring; a fastening means and a lifting portion, wherein the lifting portion and the diaphragm are connected to each other by the fastening means, wherein the lifting portion is arranged in the lifting portion bore and at least one sealing element is provided between the lifting portion and the lifting portion bore for a sealing action, wherein the lifting portion is integrally formed and the sealing element is integrally provided at the lifting portion or at the inner shell. The pressure reducing valve has the following disadvantages: a. the decompression valve shell is an integrated plastic shell, so that the decompression valve is inconvenient to disassemble and maintain; b. the structure of the pressure reducing valve component is unclear, and the applicability of some special industries (such as the industries requiring high-temperature sterilization in the biomedical field) is questionable.

SUMMERY OF THE UTILITY MODEL

To the defects in the prior art, the utility model aims at providing a liquid relief pressure valve with adjustable.

According to the utility model, the adjustable liquid pressure reducing valve comprises a water inlet pipe, a connecting piece, a sealing gasket, an upper connecting cover, a diaphragm, a lower connecting cover, a first pressure plate and a water outlet pipe; the lower end of the water inlet pipe is fixed with the connecting piece, the sealing gasket is arranged below the connecting piece, the upper connecting cover, the diaphragm and the lower connecting cover are sequentially fixed from top to bottom, an air cavity is formed between the upper connecting cover and the diaphragm, a liquid cavity is formed between the diaphragm and the lower connecting cover, and the liquid cavity is communicated with the water outlet pipe; the first pressure plate and the pressure adjusting spring are arranged above the upper connecting cover, and the first pressure plate transmits pressure to the upper surface of the diaphragm through a pressure piece; the diaphragm below sets up sealed the pad, sealed pad below sets up the compression spring that resets, sealed pad with the compression spring that resets all is located in the liquid chamber, the bottom of lower joint cover with the outlet pipe intercommunication.

Furthermore, a second pressing plate is arranged on the upper surface of the diaphragm, and the second pressing plate is connected with the first pressing plate through a pressing piece.

Furthermore, an upper convex ring is arranged on the upper surface of the membrane sheet, and a lower convex ring is arranged on the lower surface of the membrane sheet; the radius of the upper convex ring is smaller than that of the lower convex ring, and the second pressing plate is positioned in the upper convex ring.

Further, the upper end of the water inlet pipe is provided with the pressure adjusting nut, the bottom of the pressure adjusting nut is in contact with one end of the pressure adjusting spring, and the other end of the pressure adjusting spring is in contact with the first pressing plate.

Furthermore, the bottom surface of the lower connecting cover is concave downwards to form an accommodating cavity, the bottom of the accommodating cavity is concave downwards to form an inverted-boss-shaped cavity, the center of the sealing gasket protrudes downwards to form an inverted-boss-shaped structure, and the inverted-boss-shaped structure and the reset compression spring are located in the inverted-boss-shaped cavity.

Further, the upper surface of the sealing gasket is provided with a cushion block for contacting with the pressure piece.

Further, the radii of the upper connecting cover, the diaphragm and the lower connecting cover are equal.

Further, the upper connecting cover, the diaphragm and the lower connecting cover are fixed along the periphery through bolts, and the water inlet pipe, the connecting piece, the sealing pad, the upper connecting cover, the diaphragm, the lower connecting cover, the first pressing plate and the water outlet pipe are coaxially arranged.

Further, the sealing gasket and the diaphragm are made of silica gel, and all the rest parts of the pressure reducing valve are made of 316L stainless steel.

Further, the pressure reducing valve is of a detachable structure.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a liquid relief pressure valve with adjustable can the manual regulation valve outlet fluid pressure size.

2. The utility model discloses a liquid relief pressure valve with adjustable, for quick detachable structure, can carry out work such as part-disassembly maintenance, washing and change to the part.

3. The utility model discloses a liquid relief pressure valve with adjustable, the relief pressure valve material adopts 316L stainless steel and clean silica gel material, wholly can tolerate 121 ℃ high temperature disinfection, when having solved the online high temperature disinfection of bio-medical industry, the problem that dismouting need relapse is not endured to conventional relief pressure valve structure high temperature sterilization.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a first perspective view of the present invention;

FIG. 2 is a second perspective view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a first perspective view of the upper connection cover of the present invention;

FIG. 5 is a second perspective view of the upper connection cover of the present invention;

fig. 6 is a first perspective view of the diaphragm of the present invention;

fig. 7 is a second perspective view of the diaphragm of the present invention;

fig. 8 is a first perspective view of the lower connection cover of the present invention;

fig. 9 is a second perspective view of the lower connection cover of the present invention;

fig. 10 is a first perspective view of the gasket of the present invention;

fig. 11 is a second perspective view of the gasket of the present invention;

fig. 12 is a second schematic view illustrating the cooperation of the diaphragm, the first pressing plate, the second pressing plate and the connecting member according to the present invention;

fig. 13 is a second schematic view of the diaphragm, the first pressing plate, the second pressing plate and the connecting member according to the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

Referring to fig. 1 to 13, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

An adjustable liquid pressure reducing valve comprises a water inlet pipe 1, a connecting piece 2, a sealing gasket 3, an upper connecting cover 4, a diaphragm 5, a lower connecting cover 6, a first pressure plate 7 and a water outlet pipe 8; the lower end of the water inlet pipe 1 is fixed with a connecting piece 2, a sealing gasket 3 is arranged below the connecting piece 2, an upper connecting cover 4, a diaphragm 5 and a lower connecting cover 6 are sequentially fixed from top to bottom, an air cavity 9 is formed between the upper connecting cover 4 and the diaphragm 5, a liquid cavity 10 is formed between the diaphragm 5 and the lower connecting cover 6, and the liquid cavity 10 is communicated with a water outlet pipe 8; a first pressure plate 7 and a pressure adjusting spring 11 are arranged above the upper connecting cover 4, and the first pressure plate 7 transmits pressure to the upper surface of the diaphragm 5 through a pressure piece 15; below the membrane 5 a sealing gasket 3 is arranged, the upper surface of which 3 is provided with a spacer 31 for contact with the pressure element 15. The lower part of the sealing gasket 3 is provided with a return compression spring 12, the sealing gasket 3 and the return compression spring 12 are both positioned in the liquid cavity 10, and the bottom of the lower connecting cover 6 is communicated with the water outlet pipe 8. Preferably, the radii of the upper connecting cover 4, the membrane 5 and the lower connecting cover 6 are equal. The upper connecting cover 4, the diaphragm 5 and the lower connecting cover 6 are fixed along the periphery through bolts, and the water inlet pipe 1, the connecting piece 2, the sealing gasket 3, the upper connecting cover 4, the diaphragm 5, the lower connecting cover 6, the first pressing plate 7 and the water outlet pipe 8 are coaxially arranged.

Specifically, a second pressing plate 13 is arranged on the upper surface of the diaphragm 5, and the second pressing plate 13 is connected with the first pressing plate 7 through a pressing piece 15. The upper surface of the diaphragm 5 is provided with an upper convex ring 51, and the lower surface is provided with a lower convex ring 52; the radius of the upper convex ring 51 is smaller than that of the lower convex ring 52, and the second presser plate 13 is located inside the upper convex ring 51.

In some embodiments, the upper end of the water inlet pipe 1 is mounted with a pressure adjusting nut 14, the bottom of the pressure adjusting nut 14 is in contact with one end of the pressure adjusting spring 11, and the other end of the pressure adjusting spring 11 is in contact with the first presser plate 7.

Specifically, the bottom surface of the lower connecting cover 6 is recessed to form a containing cavity, the bottom of the containing cavity is recessed downwards to form an inverted frustum-shaped cavity 61, the center of the sealing gasket 3 protrudes downwards to form an inverted frustum-shaped structure, and the inverted frustum-shaped structure and the reset compression spring 12 are located in the inverted frustum-shaped cavity 61.

Specifically, the sealing gasket 3 and the diaphragm 5 are made of silica gel, and all the rest parts of the pressure reducing valve are made of 316L stainless steel.

The utility model discloses a liquid relief pressure valve with adjustable is detachable structure.

The working principle is as follows:

1. high-pressure liquid injected from the water inlet pipe acts on the silica gel sealing gasket, the thrust of the reset compression spring is overcome, the diaphragm moves towards the liquid cavity, and water enters the liquid cavity and is discharged from the water outlet pipe.

2. The water pressure established by the water outlet and the reset compression spring are superposed and act below the diaphragm, the water inlet pressure and the pressure adjusting spring are superposed and act above the diaphragm, and when the acting forces on the two sides are balanced, stable water pressure is output at the water outlet.

3. The pressure regulating nut can regulate the water outlet pressure value.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. An adjustable liquid pressure reducing valve is characterized by comprising a water inlet pipe (1), a connecting piece (2), a sealing gasket (3), an upper connecting cover (4), a diaphragm (5), a lower connecting cover (6), a first pressure plate (7) and a water outlet pipe (8);

the lower end of the water inlet pipe (1) is fixed with the connecting piece (2), the sealing gasket (3) is arranged below the connecting piece (2), the upper connecting cover (4), the diaphragm (5) and the lower connecting cover (6) are sequentially fixed from top to bottom, an air cavity (9) is formed between the upper connecting cover (4) and the diaphragm (5), a liquid cavity (10) is formed between the diaphragm (5) and the lower connecting cover (6), and the liquid cavity (10) is communicated with the water outlet pipe (8);

the first pressure plate (7) and the pressure adjusting spring (11) are arranged above the upper connecting cover (4), and the first pressure plate (7) transmits pressure to the upper surface of the diaphragm (5) through a pressure piece (15); diaphragm (5) below sets up sealed pad (3), sealed pad (3) below sets up compression spring (12) that resets, sealed pad (3) with compression spring (12) that resets all are located in liquid chamber (10), the bottom of lower junction cover (6) with outlet pipe (8) intercommunication.

2. The adjustable liquid pressure reducing valve according to claim 1, wherein a second pressure plate (13) is arranged on the upper surface of the diaphragm (5), and the second pressure plate (13) is connected with the first pressure plate (7) through a pressure piece (15).

3. An adjustable liquid pressure reducing valve according to claim 2, wherein the upper surface of the diaphragm (5) is provided with an upper convex ring (51), and the lower surface is provided with a lower convex ring (52); the radius of the upper convex ring (51) is smaller than that of the lower convex ring (52), and the second pressing plate (13) is positioned in the upper convex ring (51).

4. The adjustable liquid pressure reducing valve according to claim 1, wherein the pressure adjusting nut (14) is mounted at the upper end of the water inlet pipe (1), the bottom of the pressure adjusting nut (14) is in contact with one end of the pressure adjusting spring (11), and the other end of the pressure adjusting spring (11) is in contact with the first pressure plate (7).

5. The adjustable liquid pressure reducing valve according to claim 1, wherein the bottom surface of the lower connecting cover (6) is recessed to form a containing cavity, the bottom of the containing cavity is recessed downward to form an inverted boss-shaped cavity, the center of the sealing gasket (3) protrudes downward to form an inverted boss-shaped structure, and the inverted boss-shaped structure and the return compression spring (12) are located in the inverted boss-shaped cavity.

6. An adjustable liquid pressure reducing valve according to claim 1, wherein the upper surface of the sealing gasket (3) is provided with a pad for contact with the pressure member (15).

7. An adjustable liquid pressure reducing valve according to claim 1, wherein the radii of the upper connecting cover (4), the diaphragm (5) and the lower connecting cover (6) are equal.

8. The adjustable liquid pressure reducing valve according to claim 1, wherein the upper connecting cover (4), the diaphragm (5) and the lower connecting cover (6) are fixed along the periphery through bolts, and the water inlet pipe (1), the connecting piece (2), the sealing gasket (3), the upper connecting cover (4), the diaphragm (5), the lower connecting cover (6), the first pressure plate (7) and the water outlet pipe (8) are coaxially arranged.

9. The adjustable liquid pressure reducing valve according to claim 1, wherein the sealing gasket (3) and the diaphragm (5) are made of silica gel, and all the other components of the pressure reducing valve are made of 316L stainless steel.

10. The adjustable liquid pressure reducing valve as claimed in claim 1, wherein the pressure reducing valve is of a detachable construction.