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CN-224214787-U - Detachable pneumatic shut-off valve seat sealing structure

CN224214787UCN 224214787 UCN224214787 UCN 224214787UCN-224214787-U

Abstract

The utility model provides a detachable pneumatic cut-off valve seat sealing structure, which relates to the field of pneumatic cut-off valves and comprises a valve body, wherein the left side surface of the valve body and the right side surface of the valve body are respectively connected with a mounting flange, a group of mounting holes are formed in the outer surface of each mounting flange, and sealing grooves are formed in the left side surface of the mounting flange and the right side surface of the mounting flange. This detachable pneumatic trip valve disk seat seal structure through pneumatic piece drive switching valve rod, can drive the switching piece and rotate with the dish board, can realize opening and cutting off of fluid passage fast and accurately, and response speed is fast, and control accuracy is high, and when the valve body internal pressure was too high, the closing plate slides under the pressure effect, compression spring and buffering damping let the fluid get into the pressure release subassembly, avoid the valve body impaired because of the pressure is too high, moreover, drive the screw thread lead screw through the rotation handle and rotate, can nimble adjustment closing plate's initial position to accurate regulation pressure release pressure.

Inventors

  • YANG JIANBO
  • ZHU XIAOQI
  • ZHU ZHENGYUAN

Assignees

  • 无锡和佳仪器仪表有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (6)

  1. 1. A detachable pneumatic cut-off valve seat sealing structure comprises a valve body (1) and is characterized in that a left side face of the valve body (1) and a right side face of the valve body (1) are connected with mounting flanges (2), a group of mounting holes (7) are formed in the outer surface of each mounting flange (2), sealing grooves (3) are formed in the left side face of each mounting flange (2) and the right side face of each mounting flange (2), sealing gaskets (4) are connected to the inner wall of each sealing groove (3), valve seat assemblies (5) are clamped to the inner wall of the valve body (1), and pressure relief assemblies (6) are communicated to the bottom face of the valve body (1).
  2. 2. The detachable pneumatic shut-off valve seat sealing structure according to claim 1, wherein the valve seat assembly (5) comprises a valve seat body (501) connected with the inner wall of the valve body (1), a pneumatic part (503) is connected to the upper surface of the valve seat assembly (5), and an adapter valve rod (504) is clamped on the inner wall of the pneumatic part (503).
  3. 3. The detachable pneumatic shut-off valve seat sealing structure according to claim 2, wherein the left side surface of the valve seat body (501) and the right side surface of the valve seat body (501) are respectively connected with a positioning plate (502), the upper surface of each positioning plate (502) is respectively connected with two positioning bolts (507) in a threaded manner, and each positioning plate (502) is connected with the valve body (1) through each positioning bolt (507).
  4. 4. A detachable pneumatic shut-off valve seat sealing structure according to claim 3, characterized in that the back of the valve seat body (501) is connected with a parameter label (8).
  5. 5. The detachable pneumatic shut-off valve seat sealing structure according to claim 4, wherein the bottom surface of the switching valve rod (504) is connected with a switching block (505), and the bottom surface of the switching block (505) is connected with a disc plate (506).
  6. 6. The detachable pneumatic shut-off valve seat sealing structure of claim 1, wherein the bottom surface of the pressure relief assembly (6) is communicated with two pressure regulating cylinders (602), the inner wall of each pressure regulating cylinder (602) is slidably connected with a sealing plate (603), the inner wall of each pressure regulating cylinder (602) is clamped with a buffer damper (604), the outer surface of each buffer damper (604) is sleeved with a spring (605), the inner bottom wall of each pressure regulating cylinder (602) is in threaded connection with a threaded lead screw (606), and the bottom surface of each threaded lead screw (606) is connected with a rotating handle (601).

Description

Detachable pneumatic shut-off valve seat sealing structure Technical Field The utility model relates to the technical field of pneumatic shut-off valves, and particularly discloses a detachable pneumatic shut-off valve seat sealing structure. Background The pneumatic cut-off valve is also called pneumatic cut-off valve, which is one of executing mechanisms in automatic system and consists of multiple spring pneumatic film executing mechanism or floating piston executing mechanism and regulating valve, and receives the signal of regulating instrument to control the cut-off, cut-on or cut-off of fluid in technological pipeline. Has the characteristics of simple structure, sensitive response, reliable action and the like. Can be widely applied to industrial production departments of petroleum, chemical industry, metallurgy and the like. At present, a conventional pneumatic cut-off valve seat sealing structure is generally designed in an integrated manner, once sealing problems occur, maintenance personnel often need to carry out complex and time-consuming disassembly work on the whole valve, meanwhile, under a high-pressure environment, a sealing element can be excessively worn due to overlarge pressure, so that sealing performance is reduced, when pressure suddenly drops, the condition of loose sealing is easy to occur, medium leakage is caused, production safety is seriously threatened, and meanwhile, resource waste and environmental pollution are caused. Disclosure of utility model The utility model provides a detachable pneumatic cut-off valve seat sealing structure, which is characterized in that a rotating handle is rotated to drive a threaded screw rod to rotate, the threaded screw rod pushes a sealing plate to move, and the initial position of the sealing plate is changed, so that the pressure relief pressure is adjusted, and the problem that the sealing performance is reduced due to excessive abrasion of a sealing element possibly caused by excessive pressure, and the condition of loose sealing is easy to occur when the pressure suddenly drops is solved. The utility model discloses a detachable pneumatic cut-off valve seat sealing structure, which comprises a valve body, wherein the left side surface of the valve body and the right side surface of the valve body are respectively connected with a mounting flange, a group of mounting holes are formed in the outer surface of each mounting flange, sealing grooves are formed in the left side surface of each mounting flange and the right side surface of each mounting flange, sealing gaskets are connected to the inner wall of each sealing groove, a valve seat assembly is clamped on the inner wall of the valve body, and a pressure relief assembly is communicated with the bottom surface of the valve body. As the detachable pneumatic cut-off valve seat sealing structure, the valve seat assembly comprises a valve seat body connected with the inner wall of the valve body, the upper surface of the valve seat assembly is connected with a pneumatic piece, and the inner wall of the pneumatic piece is clamped with a switching valve rod. As the detachable pneumatic cut-off valve seat sealing structure, the left side surface of the valve seat body and the right side surface of the valve seat body are both connected with positioning plates, the upper surface of each positioning plate is connected with two positioning bolts in a threaded manner, and each positioning plate is connected with the valve body through the positioning bolts. As the detachable pneumatic cut-off valve seat sealing structure, the utility model is preferable, the bottom surface of the switching valve rod is connected with a switching block, and the bottom surface of the switching block is connected with a disc plate. As the detachable pneumatic cut-off valve seat sealing structure, the bottom surface of the pressure relief assembly is communicated with two pressure regulating cylinders, the inner wall of each pressure regulating cylinder is connected with a sealing plate in a sliding manner, the inner wall of each pressure regulating cylinder is clamped with a buffer damper, the outer surface of each buffer damper is sleeved with a spring, the inner bottom wall of each pressure regulating cylinder is connected with a threaded screw rod in a threaded manner, and the bottom surface of each threaded screw rod is connected with a rotating handle. The beneficial effects of the utility model are as follows: This detachable pneumatic trip valve disk seat seal structure, be equipped with seal groove and sealed pad through mounting flange, can effectively ensure the leakproofness of being connected with outside pipeline, prevent that fluid from leaking, the disk seat subassembly is with the help of locating plate and positioning bolt, can easily realize with the accurate location of valve body and firmly be connected, and dismantle conveniently, time and cost of installation and maintenance have been shorten