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CN-224229252-U - Bellows stop valve with novel valve seat structure

CN224229252UCN 224229252 UCN224229252 UCN 224229252UCN-224229252-U

Abstract

The utility model provides a bellows stop valve with novel disk seat structure, through with disk seat subassembly detachable setting on the disk seat installation department of valve pocket, not only be convenient for the installation and the dismantlement of disk seat subassembly, can also effectively guarantee the sealing performance between disk seat subassembly and the valve pocket. The valve seat ring, the valve seat gland and the valve seat sealing gasket in the valve seat assembly are mutually matched to form a reliable sealing structure, so that medium leakage is effectively prevented. In addition, the detachable design of the valve seat assembly is convenient for maintenance and replacement, and the service life of the valve is prolonged. Meanwhile, the connecting structure of the valve rod and the valve core is stable and reliable, and normal opening and closing of the valve are guaranteed.

Inventors

  • YANG XIANZHEN
  • LIN XUEJIA
  • JIANG LIDA

Assignees

  • 温州金波阀门有限公司

Dates

Publication Date
20260512
Application Date
20250520

Claims (7)

  1. 1. The corrugated pipe stop valve with the novel valve seat structure comprises a valve body and a valve cover, wherein the valve cover is arranged on the valve body, a valve cavity is formed between the valve cover and the valve body, a valve rod is arranged on the valve body, a valve core is arranged in the valve cavity, one end of the valve rod stretches into the valve cavity to be connected with the valve core.
  2. 2. The bellows stop valve with novel valve seat structure of claim 1, wherein the valve seat installation part is provided with a valve seat channel at the center, the upper part of the inner wall of the valve seat channel is sunken to form a step structure, and a valve seat ring, a valve seat sealing gasket and a part of valve seat gland in the valve seat assembly are arranged on the step structure.
  3. 3. The bellows stop valve with novel valve seat structure of claim 2, wherein the valve seat gland is provided with a compression ring body part, a compression ring connecting part and a compressing part, the compressing part is formed at the bottom end of the compression ring body part in a protruding mode, the compression ring connecting part is arranged on the outer ring side of the compression ring body part in a cylindrical structure, external threads are arranged on the outer surface of the compression ring connecting part, a threaded ring groove is formed in the valve seat mounting part, the compression ring connecting part stretches into the threaded ring groove to be in threaded connection with the valve seat mounting part, and the compressing part compresses the valve seat ring.
  4. 4. The bellows stop valve with novel valve seat structure of claim 2, wherein the bottom of the valve seat ring is concaved inwards to form a sealing groove, the valve seat gasket protrudes corresponding to the sealing groove to form a sealing end, and the sealing end extends into the sealing groove to be connected with the valve seat ring in a sealing manner.
  5. 5. The bellows stop valve with novel valve seat structure of claim 1, wherein a valve core sealing element is arranged between the valve core and a valve seat ring, the valve core sealing element is arranged on the valve core, the valve seat ring is provided with an annular sealing surface corresponding to the valve core sealing element, and the annular sealing surface is in sealing connection with the valve core sealing element on the valve core.
  6. 6. The bellows stop valve with novel valve seat structure of claim 5, wherein the valve core is provided with a ring groove, the valve core sealing element is arranged in the ring groove, and the valve core sealing element is fixedly stuck to the inner wall of the ring groove and in interference fit with the inner wall of the ring groove.
  7. 7. The bellows stop valve with novel valve seat structure of claim 6, wherein the valve core sealing member is made of rubber.

Description

Bellows stop valve with novel valve seat structure Technical Field The utility model relates to the technical field of valves, in particular to a corrugated pipe stop valve with a novel valve seat structure. Background In the prior art, the valve seat of the bellows stop valve is generally integrally formed in the valve cavity, and after the valve seat is used for a long time, the valve seat is easy to wear or damage, the whole valve body needs to be replaced, and the maintenance cost and difficulty are increased. Disclosure of Invention In view of this, the present utility model provides a bellows stop valve having a novel valve seat structure. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a bellows stop valve with novel disk seat structure, includes valve body and valve gap, the valve gap sets up on the valve body, form the valve pocket between valve gap and the valve body, set up the valve rod on the valve body, set up the case in the valve pocket, valve rod one end stretches into the valve pocket and is connected with the case, set up the disk seat subassembly in the valve pocket, the disk seat subassembly includes valve seat ring, disk seat gland and disk seat sealing pad, the protrusion forms the disk seat installation department on the valve pocket inner wall, the disk seat subassembly sets up on the disk seat installation department, disk seat gland, valve seat ring and disk seat sealing pad set gradually from top to bottom on the disk seat installation department, the disk seat gland compresses tightly the valve seat ring on the disk seat sealing pad, the disk seat sealing pad is sealed in disk seat installation department and valve seat ring respectively meets. Preferably, the valve seat mounting part is provided with a valve seat channel at the center, the upper part of the inner wall of the valve seat channel is sunken to form a step structure, and the valve seat ring, the valve seat sealing gasket and part of the valve seat gland in the valve seat assembly are arranged on the step structure. Preferably, the valve seat gland is provided with a compression ring body part, a compression ring connecting part and a compression part, the compression part protrudes out to form at the bottom end of the compression ring body part, the compression ring connecting part is arranged on the outer ring side of the compression ring body part in a cylindrical structure, an external thread is arranged on the outer surface of the compression ring connecting part, a thread ring groove is arranged on the valve seat mounting part, the compression ring connecting part stretches into the thread ring groove to be in threaded connection with the valve seat mounting part, and the compression part compresses the valve seat ring. Preferably, the bottom of the valve seat ring is concaved inwards to form a sealing groove, the valve seat sealing gasket is protruded to form a sealing end corresponding to the sealing groove, and the sealing end extends into the sealing groove to be connected with the valve seat ring in a sealing way. Preferably, a valve core sealing element is arranged between the valve core and the valve seat ring, the valve core sealing element is arranged on the valve core, the valve seat ring is provided with an annular sealing surface corresponding to the valve core sealing element, and the annular sealing surface is in sealing connection with the valve core sealing element on the valve core. Preferably, the valve core is provided with a ring groove, the valve core sealing element is arranged in the ring groove, and the valve core sealing element is fixedly stuck to the inner wall of the ring groove and in interference fit with the inner wall of the ring groove. Preferably, the valve core sealing element is made of rubber. The valve seat assembly has the beneficial effects that the valve seat assembly is detachably arranged on the valve seat mounting part of the valve cavity, so that the valve seat assembly is convenient to mount and dismount, and the sealing performance between the valve seat assembly and the valve cavity can be effectively ensured. The valve seat ring, the valve seat gland and the valve seat sealing gasket in the valve seat assembly are mutually matched to form a reliable sealing structure, so that medium leakage is effectively prevented. In addition, the detachable design of the valve seat assembly is convenient for maintenance and replacement, and the service life of the valve is prolonged. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these dra