CN-224229313-U - Ball valve with valve rod blowout prevention structure

Abstract

The utility model provides a ball valve with valve rod blowout prevention structure, includes valve body, valve ball and valve rod, form the valve pocket in the valve body, the valve ball sets up in the valve pocket, the one end of valve rod stretches into the valve pocket and is connected with the valve ball, set up the valve rod gland on the valve body, set up the valve rod locating end on the valve rod gland, the valve rod corresponds the valve rod locating end and sets up valve rod crimping portion, valve rod locating end compresses tightly valve rod crimping portion and carries out spacingly to the upper and lower position of valve rod in the valve body, through setting up the valve rod locating end that is used for compressing tightly valve gap crimping portion on the valve rod crimping portion, can prevent effectively that the valve rod from being blown out the valve body by accident under high pressure or unusual operating mode, has strengthened the overall stability and the security of ball valve.

Inventors

• ZHANG SHISHI

Assignees

• 温州市景越阀门有限公司

Dates

Publication Date

20260512

Application Date

20250515

Claims (7)

1. 1. A ball valve with a valve rod blowout prevention structure comprises a valve body, a valve ball and a valve rod, wherein a valve cavity is formed in the valve body, the valve ball is arranged in the valve cavity, one end of the valve rod stretches into the valve cavity to be connected with the valve ball.
2. 2. The ball valve with the valve rod blowout prevention structure according to claim 1, wherein the top end of the valve body protrudes to form a valve rod guiding end, a guiding groove communicated with a valve cavity is formed in the valve rod guiding end, one end of the valve rod penetrates through the guiding groove to extend into the valve cavity to be connected with a valve ball, the valve rod gland is arranged on the valve rod guiding end and is provided with a body part, a valve body connecting part and an upper sealing part, the valve body connecting part is arranged on one side, far away from a valve rod central axis, of the bottom end of the body part, the valve body connecting part is fixedly connected with the valve rod guiding end, the valve rod positioning end protrudes from one side, close to the valve rod central axis, of the bottom end of the body part, and the valve rod positioning end extends towards the valve rod crimping part and presses the valve rod crimping part.
3. 3. The ball valve with the valve rod blowout prevention structure according to claim 2, wherein the valve rod is provided with a connecting end and a driving end, the driving end is formed by protruding the center of the top of the connecting end, the outer diameter of the connecting end is larger than that of the driving end, the connecting end and the driving end form a step structure, and the valve rod crimping part is a horizontal step surface on the step structure.
4. 4. The ball valve with the valve rod blowout prevention structure according to claim 2, wherein the upper sealing portion is formed by protruding the top end of the body portion towards the valve rod, a sealing groove is formed between the upper sealing portion and the body portion and between the upper sealing portion and the valve rod crimping portion, the valve rod penetrates through the sealing groove to extend into the valve cavity, and sealing filler is arranged between the portion, located in the sealing groove, of the valve rod and the groove wall of the sealing groove.
5. 5. The ball valve with the valve rod blowout prevention structure according to claim 1, wherein an annular groove is formed between the valve rod positioning end and the valve rod, and an annular wear plate is arranged in the annular groove.
6. 6. The ball valve with the valve rod blowout prevention structure according to claim 2, wherein the valve body comprises a left valve body and a right valve body, the left valve body and the right valve body are welded and fixed, and the valve rod guiding end is formed at the top end of the right valve body in a protruding mode.
7. 7. The ball valve with the valve rod blowout prevention structure according to claim 2, wherein a valve body sealing groove and a valve rod sealing groove are respectively formed in a groove wall of the guide groove and a part of the valve rod located in the guide groove, a plurality of valve body sealing grooves and valve rod sealing grooves are arranged at equal intervals, and the valve body sealing grooves and the valve rod sealing grooves are arranged in a staggered mode.

Description

Ball valve with valve rod blowout prevention structure Technical Field The utility model relates to the technical field of ball valves, in particular to a ball valve with a valve rod blowout prevention structure. Background In the prior art, the ball valve is used as a key component for controlling fluid and is widely applied to a plurality of fields such as petroleum, chemical industry, water treatment, construction and the like. Under the working conditions of high pressure, high temperature or corrosive substances contained in fluid, the sealing performance and structural stability of the ball valve are particularly important. However, in the long-term use process of the traditional ball valve, a series of problems, such as loosening and blowing of the valve rod, are often caused by unreasonable design of the valve rod, so that the overall sealing effect and safety of the ball valve are affected. Disclosure of Invention In view of this, the present utility model provides a ball valve having a valve stem blowout prevention structure. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a ball valve with valve rod blowout prevention structure, includes valve body, valve ball and valve rod, form the valve pocket in the valve body, the valve ball sets up in the valve pocket, the one end of valve rod stretches into the valve pocket and is connected with the valve ball, set up the valve rod gland on the valve body, set up the valve rod locating end on the valve rod gland, the valve rod corresponds the valve rod locating end and sets up valve rod crimping portion, valve rod locating end compresses tightly valve rod crimping portion and carries out spacingly to the upper and lower position of valve rod in the valve body. Preferably, the valve body top protrusion forms the valve rod guide end, set up the guiding groove that communicates the valve pocket on the valve rod guide end, valve rod one end passes the guiding groove and stretches into the valve pocket and be connected with the valve ball, the valve rod gland sets up on the valve rod guide end, the valve rod gland has body portion, valve body connecting portion and last sealing part, valve body connecting portion set up in one side of keeping away from the valve rod axis in body portion bottom, valve body connecting portion and valve rod guide end fixed connection, the valve rod locating end is close to valve rod axis one side protrusion formation by body portion bottom, just the valve rod locating end extends towards valve rod crimping portion direction and pushes down valve rod crimping portion. Preferably, the valve rod is provided with a connecting end and a driving end, the driving end is formed by protruding the center of the top of the connecting end, the outer diameter of the connecting end is larger than that of the driving end, the connecting end and the driving end form a step structure, and the valve rod crimping part is a horizontal step surface on the step structure. Preferably, the upper sealing part is formed by protruding the top end of the body part towards the valve rod, a sealing groove is formed between the upper sealing part and the body part and between the upper sealing part and the valve rod crimping part, the valve rod penetrates through the sealing groove and stretches into the valve cavity, and sealing filler is arranged between the part, located in the sealing groove, of the valve rod and the groove wall of the sealing groove. Preferably, an annular groove is formed between the valve rod positioning end and the valve rod, and an annular wear-resisting piece is arranged in the annular groove. Preferably, the valve body comprises a left valve body and a right valve body, the left valve body and the right valve body are welded and fixed, and the guide end of the valve rod is protruded and formed at the top end of the right valve body. Preferably, the groove wall of the guide groove and the valve rod are positioned in the guide groove, and are respectively provided with a valve body sealing groove and a valve rod sealing groove, the valve body sealing groove and the valve rod sealing groove are arranged at equal intervals, and the valve body sealing groove and the valve rod sealing groove are arranged in a staggered mode. The valve rod positioning end for pressing the valve cover pressing part is arranged on the valve rod pressing cover, so that the valve rod can be effectively prevented from being accidentally blown out of the valve body under high pressure or abnormal working conditions, and the overall stability and safety of the ball valve are enhanced. 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 descri