CN211624284U

CN211624284U - Diaphragm valve

Info

Publication number: CN211624284U
Application number: CN201922250469.1U
Authority: CN
Inventors: 于田; 段金周
Original assignee: Zhengzhou Zhongte Valve Co ltd
Current assignee: Zhengzhou Zhongte Valve Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-02
Anticipated expiration: 2029-12-16

Abstract

The diaphragm valve aims to solve the problem that a diaphragm in the diaphragm valve is not easy to replace; the valve comprises a valve body, wherein a straight tubular flow passage is arranged in the valve body, a valve port is formed in one side of the middle section of the valve body, a valve cover is arranged on the valve port, a diaphragm is fixed between the valve cover and the valve body, a valve clack is arranged in the valve cover, a valve rod connected with the valve clack is arranged in the valve cover in a penetrating manner, the upper end of the valve rod is connected with a driving piece, the lower end of the valve clack is connected with the diaphragm through a connecting pin, the lower end of the connecting pin is attached to the diaphragm, connecting arms positioned on two sides of the connecting pin are arranged on the diaphragm, a connecting cavity is formed between the connecting arms, the connecting pin is arranged in the connecting cavity; the utility model discloses the structure is ingenious, sets up being connected of diaphragm and valve clack into can dismantling the fixed mode of simple and convenient formula, realizes the quick installation of diaphragm, reduces maintenance workman's intensity of labour and improves work efficiency.

Description

Diaphragm valve

Technical Field

The device relates to the technical field of valves, in particular to a diaphragm valve.

Background

The diaphragm valve is a special type of cut-off valve, its opening and closing part is a diaphragm made of soft material, and separates the valve body cavity from the valve cover cavity and driving component, so that it can be extensively used in various fields.

The diaphragm valve often takes place the diaphragm and opens the problem that the piece is connected and drops in the use, leads to the diaphragm valve can't open or can't adjust the size of flow, causes the inefficacy of diaphragm valve, must restore it at this moment, and current diaphragm valve structure uses connecting pieces such as screw to fix it together with the valve clack, is difficult for demolising and installing when changing the diaphragm, can consume a large amount of time of maintenance personal, very big influence work efficiency.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model provides a diaphragm valve, the difficult problem of changing of diaphragm in its aim at solution diaphragm valve.

The technical scheme for solving the technical problem is as follows: the diaphragm valve, which comprises a valve body, be equipped with the runner of straight tube-shape in the valve body, the valve port has been seted up to valve body middle section one side, be equipped with the valve gap on the valve port, be fixed with the diaphragm between valve gap and the valve body, be provided with the valve clack in the valve gap, wear to be equipped with the valve rod of being connected with the valve clack in the valve gap, the valve rod upper end is connected with the driving piece, the valve clack lower extreme is connected with the diaphragm through the connecting pin, connecting pin lower extreme and diaphragm laminating, be equipped with the linking arm that is located the connecting pin both sides on the diaphragm, form the connection chamber between the linking arm, the connecting pin is arranged in the connection intracavity, leave the clearance.

The utility model discloses the structure is ingenious, sets up being connected of diaphragm and valve clack into can dismantling the fixed mode of simple and convenient formula, realizes the quick installation of diaphragm, reduces maintenance workman's intensity of labour and improves work efficiency.

Drawings

Fig. 1 is a front sectional view of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

Fig. 3 is a schematic structural diagram of the middle valve flap of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

From fig. 1 to 3, the diaphragm valve, including valve body 1, be equipped with straight tube-shaped runner 2 in the valve body 1, the valve port has been seted up to 1 middle section one side of valve body, be equipped with valve gap 3 on the valve port, be fixed with diaphragm 4 between valve gap 3 and the valve body 1, be provided with valve clack 5 in the valve gap 3, wear to be equipped with the valve rod 6 of being connected with valve clack 5 in the valve gap 3, valve rod 6 upper end is connected with driving piece 7, valve clack 5 lower extreme is connected with diaphragm 4 through connecting

8, 8 lower extremes of connecting pin and diaphragm 4 laminate, be equipped with the linking arm 9 that is located 8 both sides of connecting pin on the diaphragm 4, form the connection chamber between the linking arm 9, connecting pin 8 arranges the connection intracavity in, leave the clearance between 8 and the linking arm 9, be equipped with the flexible piece 10 in the scalable clearance in the connecting pin.

In order to facilitate the use, a cavity 11 is arranged in the valve cover 3, the valve cover 3 moves up and down in the cavity 11, and a sliding groove structure for preventing the valve plate from rotating is arranged on the inner wall of the valve cover 3.

For convenience of use, the valve rod 6 is rotatably connected with the valve clack 5, and the valve rod 6 is in threaded connection with the valve cover 3.

In order to facilitate installation and maintenance, an installation cavity 12 is arranged in the valve clack 5, the upper end of the connecting pin 8 is inserted into the installation cavity 12 and fixed by a screw, and an operation opening is formed in one side of the installation cavity 12.

In order to use conveniently, a bracket 13 is further arranged between the valve clack 5 and the diaphragm 4, the connecting pin 8 is located inside the bracket 13, the diaphragm 4 and the bracket 13 are fixed on the valve clack 5 through the connecting pin 8, when the valve clack is installed, the connecting pin 8 is inserted into a connecting cavity of the connecting arm 9 and fixed, then the bracket 13 is sleeved on the connecting pin 8, the connecting pin 8 is inserted into an installing cavity 12 in the valve clack 5 and fixed through screws, and the diaphragm 4 is fixed outside the bracket 13 after the connecting pin 8 is tensioned.

For convenience of use, the abutting surfaces of the connecting arm 9 and the connecting pin 8 are inclined surfaces.

For the convenience of use, connecting pin 8 in be equipped with vertical connecting block 14, the connecting block 14 lower extreme is connected and is connected the face for the wedge with flexible piece 10, the vertical removal of connecting block 14 drives the level of flexible piece 10 and stretches out and draws back.

For the convenience of use, the upper end of the connecting block 14 is provided with an operating block 15 in threaded connection with the connecting pin 8, the operating block 15 is rotatably connected with the connecting block 14, and the operating block 15 rotates to drive the connecting block 14 to vertically move in the connecting pin 8.

When the utility model is used, the utility model,

when the diaphragm 4 is damaged and needs to be maintained, the valve cover 3 is removed, the valve cover 3 with the diaphragm 4 is taken out together, then the screw of the connecting pin 8 is unscrewed from the operating opening at the side edge of the valve clack 5, the connecting pin 8 and the bracket 13 are separated from the membrane 4 and the valve clack 5, then the operating block 15 is rotated to make the connecting block 14 move upwards in the connecting pin 8, and the telescopic block 10 is driven to retract inwards, so that the connecting pin 8 and the connecting cavity have clearance again, the diaphragm 4 is conveniently separated from the connecting pin 8, then the new membrane 4 is replaced, the connecting pin 8 is inserted into the connecting cavity of the membrane 4, and because a gap is left between the connecting pin 8 and the connecting arm 9, the connecting pin 8 can be easily introduced into the connecting cavity, and then by rotating the operating block 15, after the telescopic block 10 extends out to contact with the connecting arm 9, the diaphragm 4 is tightly connected with the connecting pin 8, and then is connected with the valve clack 5 and then fixed on the valve cover 3 and connected with the valve body 1.

The inner flow passage 2 of the valve body 1 is in a straight cylinder shape, so that the medium is not subjected to resistance when circulating in the inner flow passage, impact is not caused to the valve body 1, and the service life of the valve body is prolonged.

And a sealing ring is arranged on the outer side of the membrane 4, so that the sealing performance between the membrane 4 and the wall of the flow channel 2 is enhanced, and the leakage is avoided.

The bracket 13 plays a role of auxiliary support therein, so that the connection between the membrane 4 and the valve flap 5 is more stable, and when the flow channel 2 is closed, the membrane 4 is pressed in an auxiliary manner, and the sealing is enhanced.

Compared with the prior art, the utility model, following beneficial effect has: the connecting structure of the connecting pin 8 is additionally arranged between the diaphragm 4 and the valve clack 5, the connecting pin 8 and the diaphragm 4 can be in clearance fit and can be switched into interference fit, the diaphragm 4 can be conveniently detached and installed in the clearance fit process, the temperature stability of the diaphragm 4 can be guaranteed in the interference fit process, and the effect is very good.

Claims

1. The diaphragm valve comprises a valve body (1), a straight cylindrical flow channel (2) is arranged in the valve body (1), a valve port is formed in one side of the middle section of the valve body (1), a valve cover (3) is arranged on the valve port, a diaphragm (4) is fixed between the valve cover (3) and the valve body (1), a valve clack (5) is arranged in the valve cover (3), a valve rod (6) connected with the valve clack (5) penetrates through the valve cover (3), a driving piece (7) is connected to the upper end of the valve rod (6), the diaphragm valve is characterized in that the lower end of the valve clack (5) is connected with the diaphragm (4) through a connecting pin (8), the lower end of the connecting pin (8) is attached to the diaphragm (4), connecting arms (9) located on two sides of the connecting pin (8) are arranged on the diaphragm (4), a connecting cavity is formed between the connecting arms (9), the connecting pin (8) is arranged in the connecting cavity, a gap is, the telescopic block (10) is contacted with the connecting arm (9) so that the connecting pin (8) is fixedly connected with the membrane (4).

2. A diaphragm valve according to claim 1, wherein a cavity (11) is provided in said valve cover (3), and the valve cover (3) moves up and down within the cavity (11).

3. A diaphragm valve according to claim 1, wherein the valve flap (5) is provided with a mounting chamber (12) therein, and the upper end of the connecting pin (8) is inserted into the mounting chamber (12) and fixed by screws.

4. A diaphragm valve according to claim 1, wherein a bracket (13) is provided between the valve flap (5) and the diaphragm (4), the connecting pin (8) is located inside the bracket (13), and the connecting pin (8) fixes the diaphragm (4) and the bracket (13) to the valve flap (5).

5. A diaphragm valve according to claim 1, wherein the abutment surface of the connecting arm (9) and the connecting pin (8) is a bevel.

6. The diaphragm valve of claim 1, wherein a vertical connecting block (14) is arranged in the connecting pin (8), the lower end of the connecting block (14) is connected with the telescopic block (10) and the connecting surface is a wedge-shaped surface, and the vertical movement of the connecting block (14) drives the telescopic block (10) to horizontally stretch.

7. The diaphragm valve of claim 6, wherein the upper end of the connecting block (14) is provided with an operating block (15) in threaded connection with the connecting pin (8), the operating block (15) is rotatably connected with the connecting block (14), and the operating block (15) rotates to drive the connecting block (14) to vertically move in the connecting pin (8).