CN214274564U

CN214274564U - Corrosion-resistant diaphragm for large-diameter diaphragm valve

Info

Publication number: CN214274564U
Application number: CN202023103224.5U
Authority: CN
Inventors: 李银花
Original assignee: Hunan Ningtai Rubber Plastic Co ltd
Current assignee: Hunan Ningtai Rubber Plastic Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-09-24
Anticipated expiration: 2030-12-22

Abstract

A corrosion-resistant diaphragm for a large-diameter diaphragm valve relates to the technical field of diaphragms, wherein a sealing rib is fixedly connected to the lower surface of the convex end of a diaphragm main body, a pushing block is fixedly connected to the upper surface of the convex end of the diaphragm main body, a groove is formed in the pushing block, a pressing mechanism is installed in the groove, a connecting rod is installed at the connecting end of the pressing mechanism, threaded connecting blocks which are arranged at equal intervals are fixedly connected to the connecting rod, and the threaded connecting blocks correspond to the rotating ends of the pressing mechanism in position and are in sliding connection; a heavy-calibre is anticorrosive diaphragm for diaphragm valve, drive pressing mechanism through the connecting rod and carry out work, press the diaphragm main part through pressing mechanism, increase the choked flow face of diaphragm, alleviate the pressure of sealed muscle, increase the life of sealed muscle, improve the corrosion resistance of diaphragm main part, avoid the staff to make a round trip to change the diaphragm.

Description

Corrosion-resistant diaphragm for large-diameter diaphragm valve

Technical Field

The utility model belongs to the technical field of the diaphragm technique and specifically relates to a heavy-calibre is anticorrosive diaphragm for diaphragm valve is related to.

Background

The existing diaphragm valve is closed and sealed through a sealing rib on a diaphragm sheet, if the sealing rib is worn or corroded, the worn or corroded diaphragm rib can reduce the sealing performance of the diaphragm valve, so that the leakage phenomenon is caused, and the later use is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome not enough among the background art, the utility model discloses a heavy-calibre is anticorrosive diaphragm for diaphragm valve, the utility model discloses a connecting rod drives pressing mechanism and carries out work, presses the diaphragm main part through pressing mechanism, and the choked flow face of increase diaphragm alleviates the pressure of sealed muscle, increases the life of sealed muscle, improves the corrosion resistance of diaphragm main part, avoids the staff to make a round trip to change the diaphragm.

In order to realize the utility model aims at, the utility model adopts the following technical scheme:

the utility model provides an anticorrosive diaphragm for heavy-calibre diaphragm valve, includes the diaphragm main part, the sealed muscle of fixedly connected with on the lower surface of the protruding end of diaphragm main part, fixedly connected with promotes the piece on the upper surface of the protruding end of diaphragm main part, it is equipped with the recess in the promotion piece, install pressing mechanism in the recess, install the connecting rod on pressing mechanism's the connecting end, the threaded connection piece that fixedly connected with equidistance was arranged on the connecting rod, threaded connection piece's position and pressing mechanism rotate the corresponding and sliding connection in position of end.

The position of the central axis of the pressing mechanism is coincided with the position of the central axis of the protruding end of the diaphragm main body.

Pressing means includes sleeve and backup pad, be equipped with on the sleeve and rotate the groove, it has the locating piece to rotate inslot sliding connection, the locating piece is located recess and fixed connection on the promotion piece, be equipped with the sliding tray in the sleeve, the position of sliding tray is corresponding and sliding connection with threaded connection piece's position, fixedly connected with gear ring on the sleeve, the quantity of backup pad is two, and two backup pads all are located recess and fixed connection on the promotion piece, be equipped with thread connection groove and resettlement groove in the backup pad, the position of thread connection groove is corresponding and the intercommunication with the position of resettlement groove, the resettlement inslot internal rotation is connected with the gear, the position of gear is connected with the corresponding and meshing in position of gear ring, threaded connection has the screw rod on the gear.

One end of the screw rod is fixedly connected with a pressing plate.

Two limiting rods are fixedly connected to the upper groove face and the lower groove face of the placement groove in the supporting plate respectively, clamping grooves are formed in the upper face and the lower face of the gear respectively, and the clamping grooves correspond to the limiting rods in position and are connected in a sliding mode.

The sliding groove on the sleeve is an S-shaped groove.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

a heavy-calibre is anticorrosive diaphragm for diaphragm valve, drive pressing mechanism through the connecting rod and carry out work, press the diaphragm main part through pressing mechanism, increase the choked flow face of diaphragm, alleviate the pressure of sealed muscle, increase the life of sealed muscle, improve the corrosion resistance of diaphragm main part, avoid the staff to make a round trip to change the diaphragm.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of the present invention;

1. a diaphragm body; 2. sealing the ribs; 3. a pushing block; 4. a pressing mechanism; 401. a sleeve; 402. a gear ring; 403. a pressing plate; 404. a screw; 405. a limiting rod; 406. a gear; 407. a support plate; 5. a connecting rod.

Detailed Description

The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.

Combine attached figure 1~2 a heavy-calibre is anticorrosive diaphragm for diaphragm valve, including diaphragm main part 1, fixedly connected with sealing rib 2 on the lower surface of the protruding end of diaphragm main part 1, fixedly connected with promotes piece 3 on the upper surface of the protruding end of diaphragm main part 1, it is equipped with the recess in the promotion piece 3, install pressing means 4 in the recess, install connecting rod 5 on pressing means 4's the link, the threaded connection piece that fixedly connected with equidistance was arranged on connecting rod 5, the position of threaded connection piece and the corresponding and sliding connection in pressing means 4 rotation end's position drive pressing means 4 through connecting rod 5 and carry out work, press diaphragm main part 1 through pressing means 4, increase the choked flow face of diaphragm main part 1, alleviate the pressure of sealing rib.

The position of the central axis of the pressing mechanism 4 is coincided with the position of the central axis of the convex end of the diaphragm main body 1.

The pressing mechanism 4 comprises a sleeve 401 and a supporting plate 407, the sleeve 401 is provided with a rotating groove, the rotating groove is connected with a positioning block in a sliding way, the positioning block is positioned in a groove on the pushing block 3 and is fixedly connected with the groove, a sliding groove is arranged in the sleeve 401, the position of the sliding groove corresponds to the position of the threaded connecting block and is connected with the threaded connecting block in a sliding manner, the sleeve 401 is fixedly connected with a gear ring 402, the number of the supporting plates 407 is two, the two supporting plates 407 are both positioned in the groove on the pushing block 3 and are fixedly connected, the support plate 407 is provided with a threaded connection groove and a placement groove, the position of the threaded connection groove corresponds to and is communicated with the position of the placement groove, a gear 406 is rotatably connected in the placing groove, the position of the gear 406 corresponds to the position of the gear ring 402 and is in meshed connection with the gear ring, and a screw 404 is in threaded connection with the gear 406.

One end of the screw 404 is fixedly connected with a pressing plate 403.

Two limiting rods 405 are fixedly connected to the upper and lower groove faces of the placement groove in the supporting plate 407 respectively, clamping grooves are formed in the upper and lower faces of the gear 406 respectively, and the positions of the clamping grooves correspond to the positions of the limiting rods 405 and are in sliding connection with the limiting rods.

The sliding groove on the sleeve 401 is an S-shaped groove.

When the anticorrosive diaphragm sheet for the large-aperture diaphragm valve is used, a worker installs the diaphragm sheet main body 1 on the diaphragm valve, the connecting rod 5 on the diaphragm valve main body 1 is connected with the diaphragm valve, the connecting rod 5 is pushed through the diaphragm valve, the connecting rod 5 moves downwards, the sleeve 401 is driven to rotate through downward movement of the connecting rod 5, the gear ring 402 is driven to rotate through the sleeve 401, the gear 406 is driven to rotate through the gear ring 402, the screw rod 404 is driven to move through the gear 406, the pressing plate 403 is driven to move through the screw rod 404, the diaphragm sheet main body 1 is pushed through the pressing plate 403, and the flow blocking surface of the diaphragm sheet main body 1 is increased.

The invention is not described in detail in the prior art, and although the invention has been specifically shown and described in connection with the preferred embodiments, the method and the way of implementing the technical solution are numerous, and only the preferred embodiments of the invention have been described above, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims, which are within the scope of the invention.

Claims

1. A corrosion-resistant diaphragm for a large-diameter diaphragm valve comprises a diaphragm main body (1) and is characterized in that: fixedly connected with seals muscle (2) on the lower surface of protruding end of diaphragm main part (1), fixedly connected with promotes piece (3) on the upper surface of the protruding end of diaphragm main part (1), it is equipped with the recess in block (3) to promote, install pressing means (4) in the recess, install connecting rod (5) on the link of pressing means (4), the threaded connection piece that fixedly connected with equidistance was arranged on connecting rod (5), the position of threaded connection piece and pressing means (4) rotate the corresponding and sliding connection in position of end.

2. The corrosion-resistant diaphragm for large-diameter diaphragm valves as claimed in claim 1, wherein: the position of the central axis of the pressing mechanism (4) is coincided with the position of the central axis of the protruding end of the diaphragm main body (1).

3. The corrosion-resistant diaphragm for large-diameter diaphragm valves as claimed in claim 1, wherein: the pressing mechanism (4) comprises a sleeve (401) and a supporting plate (407), a rotating groove is formed in the sleeve (401), a positioning block is connected to the rotating groove in a sliding mode, the positioning block is located in a groove in the pushing block (3) and fixedly connected with the pushing block, a sliding groove is formed in the sleeve (401), the sliding groove is located corresponding to and slidably connected with the position of the threaded connecting block, a gear ring (402) is fixedly connected to the sleeve (401), the supporting plate (407) is two in number, the two supporting plates (407) are located in grooves in the pushing block (3) and fixedly connected with the pushing block, a threaded connecting groove and a placing groove are formed in the supporting plate (407), the threaded connecting groove is located corresponding to and communicated with the placing groove, a gear (406) is rotationally connected to the placing groove, and the gear (406) is located corresponding to and meshed with the gear ring (402), the gear (406) is in threaded connection with a screw (404).

4. A corrosion resistant diaphragm for large bore diaphragm valves as claimed in claim 3, wherein: one end of the screw rod (404) is fixedly connected with a pressing plate (403).

5. A corrosion resistant diaphragm for large bore diaphragm valves as claimed in claim 3, wherein: two limiting rods (405) are fixedly connected to the upper groove face and the lower groove face of the placement groove in the supporting plate (407) respectively, clamping grooves are formed in the upper surface and the lower surface of the gear (406) respectively, and the clamping grooves correspond to the limiting rods (405) in position and are connected in a sliding mode.

6. A corrosion resistant diaphragm for large bore diaphragm valves as claimed in claim 3, wherein: the sliding groove on the sleeve (401) is an S-shaped groove.