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CN-224229269-U - Special flange for butterfly valve

CN224229269UCN 224229269 UCN224229269 UCN 224229269UCN-224229269-U

Abstract

The utility model relates to the technical field of sealing valve bodies, and discloses a flange special for a butterfly valve, which comprises a butterfly valve body, a front flange pipe connected with the front side of the butterfly valve body, and a rear flange pipe connected with the rear side of the butterfly valve body, wherein a waterproof rubber ring for sealing water flow in the butterfly valve body is arranged in the butterfly valve body, a plug post for supporting the waterproof rubber ring is arranged between the front flange pipe and the rear flange pipe, the butterfly valve body comprises a connecting block at the top, a rotating shaft penetrates through the top of the connecting block, a turnover plate for switching the butterfly valve body is arranged on the rotating shaft, and the turnover plate is attached to the waterproof rubber ring. Support waterproof rubber circle through inserting the post, cause the phenomenon of waterproof rubber circle skew when reducing the upset board and overturn to reach the butterfly valve body and reduce the emergence of leaking the phenomenon in long-term use, preceding flange pipe and back flange pipe can be spacing to inserting the post, prevent to insert the post and take place the skew for waterproof rubber circle.

Inventors

  • LIU MINGXIANG
  • ZHANG LING
  • ZHANG HAO

Assignees

  • 河北铭鸿管道装备有限公司

Dates

Publication Date
20260512
Application Date
20250623

Claims (7)

  1. 1. The flange special for the butterfly valve comprises a butterfly valve body (1) and is characterized by further comprising a front flange pipe (21) connected with the front side of the butterfly valve body (1) and a rear flange pipe (22) connected with the rear side of the butterfly valve body (1), wherein a waterproof rubber ring (10) for sealing water flow in the butterfly valve body (1) is arranged in the butterfly valve body (1), a plug pillar (1012) for supporting the waterproof rubber ring (10) is arranged between the front flange pipe (21) and the rear flange pipe (22), the butterfly valve body (1) comprises a connecting block (14) at the top, a rotating shaft (13) penetrates through the top of the connecting block (14), a turnover plate (141) for switching the butterfly valve body (1) is arranged on the rotating shaft (13), and the turnover plate (141) is attached to the waterproof rubber ring (10).
  2. 2. The flange special for a butterfly valve according to claim 1, wherein the butterfly valve body (1) further comprises a front valve body (11) positioned at the front side, a rear valve body (12) is arranged at the rear side of the front valve body (11), a passage penetrating through the front valve body and the rear valve body (12) can be formed between the front valve body (11) and the rear valve body (12), the number of the waterproof rubber rings (10) is two, the two waterproof rubber rings (10) can be attached to the passage, and the two waterproof rubber rings (10) can wrap the rotating shaft (13).
  3. 3. The flange special for butterfly valve according to claim 2, wherein the waterproof rubber ring (10) comprises a tubular ring (102) attached to a pipeline, a flange (101) protruding towards one side far away from the axis of the tubular ring (102) is arranged on one side of the tubular ring (102) far away from the rotating shaft (13), the front valve body (11) comprises a flange plate II (111) on the front side, the rear valve body (12) comprises a flange plate III (121) on the rear side, the flange (101) of one waterproof rubber ring (10) is attached to the front side of the flange plate II (111), the flange (101) of the other waterproof rubber ring (10) is attached to the rear side of the flange plate III (121), the tubular rings (102) of the two waterproof rubber rings (10) are attached to each other in the pipeline, the support holes (1011) penetrating from front to rear are arranged on the two tubular rings (102), and the support holes (1011) of the two tubular rings (102) can be jointly inserted by the inserting posts (1012).
  4. 4. A flange special for a butterfly valve according to claim 3, wherein the front flange pipe (21) comprises a flange plate I (211) on the rear side, the flange plate I (211) can be attached to the flange (101) of the waterproof rubber ring (10) on the front side of the front valve body (11), and the rear flange pipe (22) comprises a flange plate IV (221) on the front side, and the flange plate IV (221) can be attached to the flange (101) of the waterproof rubber ring (10) on the rear side of the rear valve body (12).
  5. 5. The flange special for butterfly valve as recited in claim 4, wherein a front hole (2111) corresponding to the plug (1012) is formed in the rear side of the first flange (211), the front hole (2111) is a blind hole, a through hole (2211) is formed in the front side of the fourth flange (221), and the hole (2211) and the front hole (2111) can be attached to the outer diameter of the plug (1012).
  6. 6. The flange special for butterfly valve according to claim 5, wherein a second hole (2212) is coaxially arranged at the rear side of the first hole (2211), a third hole (2213) is arranged at the rear side of the second hole (2212), a threaded surface is arranged at the inner diameter of the second hole (2212), and the threaded surface is in meshed connection with a limit bolt (3).
  7. 7. The flange special for butterfly valve according to claim 6, wherein the limit bolt (3) comprises a bolt head (31), a threaded column (32) meshed with the threaded surface of the second hole (2212) is arranged on the front side of the bolt head (31), and a top column (33) capable of being inserted into the second hole (2212) is arranged on the front side of the threaded column (32).

Description

Special flange for butterfly valve Technical Field The utility model relates to the technical field of sealing valve bodies, in particular to a flange special for a butterfly valve. Background The butterfly valve is a regulating valve with simple structure, also called a flap valve, and is mainly used for cutting off and throttling fluid on a pipeline, the butterfly valve takes a circular butterfly plate as an opening and closing piece, the butterfly plate is driven to rotate in a valve body by rotating a valve rod, so that the opening, closing or flow regulation of the valve is realized, the butterfly plate rotates around an axis in a cylindrical channel of the valve body, the rotation angle is generally 0-90 degrees, when the butterfly plate rotates to 90 degrees, the valve is in a fully-opened state, and the flow of a medium can be regulated by changing the rotation angle of the butterfly plate. Butterfly valve among the prior art carries out the package through two waterproof sealing spare and presss from both sides sealedly to pivoted axle, and waterproof sealing spare needs to be connected with the external diameter department interference fit of butterfly plate of butterfly valve simultaneously, reduces the butterfly plate and is in the phenomenon that does not tightly cause rivers to flow because closing when closing the state, and overturns at the butterfly plate for a long time, drives waterproof sealing spare perk easily, and after waterproof sealing spare perk, rivers can follow the gap department of butterfly valve and flow away the phenomenon that causes the butterfly valve to leak. Disclosure of utility model In order to overcome the long-time upset of butterfly plate, drive waterproof sealing spare perk easily, after waterproof sealing spare perk, the rivers can follow the gap department of butterfly valve and flow away the problem that causes the butterfly valve to leak. The technical scheme includes that the flange special for the butterfly valve comprises a butterfly valve body, a front flange pipe connected with the front side of the butterfly valve body and a rear flange pipe connected with the rear side of the butterfly valve body, a waterproof rubber ring for sealing water flow in the butterfly valve body is arranged in the butterfly valve body, a plug post for supporting the waterproof rubber ring is arranged between the front flange pipe and the rear flange pipe, the butterfly valve body comprises a connecting block at the top, a rotating shaft penetrates through the top of the connecting block, a turnover plate for switching the butterfly valve body is arranged on the rotating shaft, and the turnover plate is attached to the waterproof rubber ring. Preferably, the butterfly valve body further comprises a front valve body positioned at the front side, the rear side of the front valve body is provided with a rear valve body, a channel penetrating through the front valve body and the rear valve body can be formed between the front valve body and the rear valve body, the waterproof rubber rings are distributed front and back for two, the two waterproof rubber rings can be attached to the channel, and the two waterproof rubber rings can wrap the rotating shaft. Preferably, the waterproof rubber ring comprises a tubular ring attached to the pipeline, one side, far away from the rotating shaft, of the tubular ring is provided with a flange protruding towards one side, far away from the axis of the tubular ring, the front valve body comprises a flange II on the front side, the rear valve body comprises a flange III on the rear side, the flange of one waterproof rubber ring is attached to the front side of the flange II, the flange of the other waterproof rubber ring is attached to the rear side of the flange III, the tubular rings of the two waterproof rubber rings are attached to the pipeline, the two tubular rings are provided with support holes penetrating from front to rear, and the support holes of the two tubular rings can be jointly inserted by the inserting posts. Preferably, the front flange pipe comprises a flange I at the rear side, wherein the flange I can be attached to a flange of a waterproof rubber ring at the front side of the front valve body, and the rear flange pipe comprises a flange IV at the front side, and the flange IV can be attached to a flange of a waterproof rubber ring at the rear side of the rear valve body. Preferably, the rear side of the first flange plate is provided with a front hole corresponding to the inserted column, the front hole is a blind hole, the four front sides of the flange plate are provided with through holes I, and the holes I and the front hole can be attached to the outer diameter of the inserted column. Preferably, the rear side of the first hole is coaxially provided with a second hole, the rear side of the second hole is provided with a third hole, the inner diameter of the second hole is provided with a thread surface, and the threa