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CN-116877702-B - Bellows stop valve

CN116877702BCN 116877702 BCN116877702 BCN 116877702BCN-116877702-B

Abstract

The application relates to the field of valves, in particular to a corrugated pipe stop valve, which comprises a valve body, a liquid inlet, a liquid outlet and a connecting hole formed on the valve body and arranged between the liquid inlet and the liquid outlet, wherein an upper guide sleeve is vertically arranged in the valve body in a sliding manner, a valve clack for blocking the connecting hole is arranged on the upper guide sleeve, a guide column is fixed on one side of the valve clack, which faces the liquid outlet, a lower guide sleeve for inserting the guide column is arranged in the connecting hole, a plurality of guide holes are formed between the lower guide sleeve and the connecting hole, and a sealing structure for clamping the valve clack is arranged on the lower guide sleeve.

Inventors

  • DAI XIANRUI
  • DAI WENTONG
  • SHI KAIWEN

Assignees

  • 上海瑞控阀门有限公司

Dates

Publication Date
20260512
Application Date
20230724

Claims (6)

  1. 1. The corrugated pipe stop valve comprises a valve body (1), a liquid inlet (2) and a liquid outlet (3) which are formed on the valve body (1), and a connecting hole (4) which is formed between the liquid inlet (2) and the liquid outlet (3), and is characterized in that an upper guide sleeve (5) is vertically arranged in the valve body (1) in a sliding mode, a valve clack (6) for blocking the connecting hole (4) is arranged on the upper guide sleeve (5), a guide column (7) is fixed on one side, facing the liquid outlet (3), of the valve clack (6), a lower guide sleeve (8) for inserting the guide column (7) is arranged in the connecting hole (4), a plurality of guide holes (9) are formed between the lower guide sleeve (8) and the connecting hole (4), a sealing structure for clamping the valve clack (6) is arranged on the lower guide sleeve (8), the sealing structure comprises a rubber ring (10) arranged on the edge, facing the valve clack (6), a chamfer (11) arranged on the edge, of the connecting hole (4), and a sealing ring (12) is arranged on one end edge of the valve clack (6), and is used for forming a sealing film (13) on the side wall of the rubber layer (13), be provided with a plurality of groups in valve clack (6) and be used for to gasbag (13) inflated subassembly (14), when valve clack (6) laminating connecting hole (4) terminal surface, rubber circle (10) contradicts sealing washer (12) to order about to inflate subassembly (14) operation in order to aerify to gasbag (13) internal pressurization, annular (15) have been seted up to the lateral wall of valve clack (6), sealing washer (12) inlay and establish in annular (15), inflation subassembly (14) include guide arm (16), coaxial cover establish spring (17) on guide arm (16), set up piston (18) of keeping away from annular (15) one end at guide arm (16), set up mounting groove (19) on the inner wall of annular (15), air cavity (20) have been seted up to mounting groove (19) one end of keeping away from annular (15), air cavity (21) have been seted up to air cavity (20) inner wall, and communicate each other with gasbag (13), guide arm (16) one end is fixed with sealing washer (12), and the other end stretches into in air cavity (20), spring (17) set up in mounting groove (19) one end of keeping away from annular (15) and sliding in piston (20).
  2. 2. A bellows stop valve according to claim 1, wherein the rubber ring (10) has a hardness greater than that of the seal ring (12), and the plurality of sets of inflation assemblies (14) are uniformly arranged at intervals along the circumferential direction of the ring groove (15).
  3. 3. The bellows stop valve of claim 1, wherein the rubber ring (10) comprises a first rubber plate (22) arranged on the end face of the connecting hole (4), and a second rubber plate (23) integrally formed at the end of the first rubber plate (22), the second rubber plate (23) is perpendicular to the first rubber plate (22), annular protrusions (24) are formed at the connecting edges of the first rubber plate (22) and the second rubber plate (23), and in an initial state, one side, extending out of the annular groove (15), of the sealing ring (12) is higher than the inclined plane of the chamfer (11).
  4. 4. A bellows stop valve according to claim 3, wherein a side of the sealing ring (12) protruding from the inclined surface of the chamfer (11) is used as a guide surface (25), and the inclination of the guide surface (25) is gradually increased with the downward movement amount of the sealing ring (12).
  5. 5. The bellows stop valve according to claim 1, wherein the end of the lower guide sleeve (8) is flared, and the side of the valve flap (6) facing away from the lower guide sleeve (8) is arc-shaped.
  6. 6. The bellows stop valve according to claim 1, wherein a sealing gasket (26) is arranged on one side of the valve clack (6) attached to the lower guide sleeve (8).

Description

Bellows stop valve Technical Field The application relates to the field of valves, in particular to a corrugated pipe stop valve. Background The corrugated pipe stop valve has the advantages that the valve cavity has good sealing performance due to the corrugated pipe sealing structure of the valve cavity, and the structure advantage is obvious due to the design of the element which surrounds the corrugated pipe and is used as a shielding medium. The prior manufacturer produces a corrugated pipe stop valve with the publication number of CN114811061A, and a valve assembly comprises a valve clack, a thrust pad and a valve clack cover, wherein the valve clack cover is sleeved at the lower part of the valve rod, the thrust pad is arranged at the bottom end of the valve rod, the valve clack cover is sleeved with the valve clack, and the thrust pad is connected with the inner wall of the bottom end of the valve clack. The valve clack and the thrust pad jointly act to close the valve, when the valve rod moves downwards to close the valve, the thrust pad is used for extruding the valve clack, and the valve clack is extruded into a pipeline of an inlet, so that the valve is closed, and the sealing performance of the valve is improved. However, in practical production application, the valve clack is easy to vibrate due to large flow and large fluid impact in a pipeline applied to a large pipeline, so that the problem of leakage caused by unstable valve clack attachment is solved. Disclosure of Invention The application provides a corrugated pipe stop valve, which aims to reduce the leakage problem caused by impact vibration of large flow to a valve clack. The application provides a corrugated pipe stop valve, which adopts the following technical scheme: The utility model provides a bellows stop valve, includes valve body, shaping inlet and liquid outlet on the valve body, sets up the connecting hole between inlet and liquid outlet, vertical slip is provided with the uide bushing in the valve body, go up the last valve clack that sets up to be used for shutoff connecting hole of uide bushing, the valve clack is fixed with the guide post towards one side of liquid outlet, be provided with the lower uide bushing that is used for inserting the guide post in the connecting hole, form a plurality of water conservancy diversion hole between lower uide bushing and the connecting hole, be provided with the seal structure who is used for the block valve clack down on the uide bushing. Through adopting above-mentioned technical scheme, through setting up uide bushing and lower uide bushing to when valve clack laminating connecting hole terminal surface, cut off inlet and liquid outlet, insert through the guide post and establish in lower uide bushing, thereby make valve clack and lower uide bushing between be difficult to take place transverse displacement, thereby even the large-traffic also hardly causes impact vibrations, and then reduced the condition of leaking. Optionally, seal structure is including setting up the rubber circle on connecting hole towards valve clack one end edge, offer the chamfer at valve clack edge, set up the sealing washer that is used for laminating with the rubber circle on the chamfer, the parcel has one deck glued membrane and forms the gasbag on the lateral wall of guide post, be provided with a plurality of groups in the valve clack and be used for to the inflatable subassembly of gasbag, when valve clack laminating connecting hole terminal surface, the rubber circle contradicts the sealing washer to order about to inflate the subassembly operation, in order to aerify to the gasbag internal pressurization. Through adopting above-mentioned technical scheme, when the shutoff connecting hole for the sealing washer is laminated to the rubber circle, thereby has increased the leakproofness when the shutoff connecting hole, simultaneously at the in-process of the mutual extrusion of rubber circle and sealing washer, drives the subassembly operation of aerifing, realizes aerifing in to the gasbag, makes more stable between valve clack and the lower uide bushing, is difficult to produce vibrations. Optionally, the lateral wall of valve clack has seted up the annular, the sealing washer inlays and establishes in the annular, the subassembly of aerifing includes guide arm, coaxial cover establish on the guide arm the spring, set up the piston of keeping away from annular one end at the guide arm, the mounting groove has been seted up on the inner wall of annular, the mounting groove is kept away from annular one end and has been seted up the chamber of aerifing, the gas vent has been seted up to the chamber inner wall of aerifing, and communicates each other with the gasbag, guide arm one end is fixed with the sealing washer, and the other end stretches into the chamber of aerifing, the spring sets up in the mounting groove, the piston slides in the chamber of aerifing. Through adopting above-mentioned t