a ball valve
A ball valve and valve ball technology, applied in the field of valve manufacturing, can solve the problems of large distance, low service life, and difficulty in online disassembly and assembly, and achieve the effects of reduced wear, convenient maintenance, and convenient online disassembly and assembly
Active Publication Date: 2015-12-23
NEWAY VALVE SUZHOU
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Problems solved by technology
[0005] Therefore, the technical problem to be solved by the present invention is that the unreasonable structural design of the existing top-entry ball valve leads to a large distance for the retainer to move to the valve body, which eventually leads to difficulties in online disassembly and low service life; Reasonably design the structure of the retainer, shorten the moving distance of the retainer to the valve body, and realize the convenient online disassembly function
Method used
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Embodiment Construction
[0027] figure 1 Shown is a ball valve provided by the embodiment of the present invention, including a retainer 13 and a valve seat 14 located between the valve ball 11 and the valve body 12, the retainer 13 and the valve body 12 are sealed and connected through a seal 15, and the valve seat 14 is located at between the retainer 13 and the valve ball 11, and is in sealing connection with the valve ball 11; The end surface is located in the gap between the valve body 12 and the valve ball 11 .
[0028] The assembly process of the ball valve of the present invention is as follows: first install the retainer 13 in the valve body 12, use tooling to push the retainer 13 to one end of the valve body 12 to reserve the space required for placing the valve ball 11, and then limit the position of the retainer 13 , and then put the valve seat 14 and the valve ball 11 together into the valve body 12, the valve seat 14 is located between the retainer 13 and the valve ball 11, and the axia...
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The invention relates to a ball valve comprising a fixing device and a valve seat. The fixing device and the valve seat are arranged between a valve ball and a valve body and hermetically connected through a seal. The valve seat is arranged between the fixing device and the valve ball and hermetically connected with the valve ball. The radial outer end face of the valve seat is hermetically connected with the radial outer end face of the fixing device. The axil end face of the valve seat is arranged in a gap between the valve body and the valve ball. The fixing device is hermetically connected with the valve body through another seal. The valve seat is hermetically connected with the valve ball. The valve seat is arranged between the valve ball and the fixing device. The axial end face of the valve seat is arranged in the gap between the valve body and the valve ball. Just after the radial outer end face of the fixing device is moved to contact with the radial outer end face of the valve seat, the outer end face of the valve seat can be hermetically connected with the outer end face of the fixing device; meanwhile, the fixing deice moves in a short distance, and convenient online demounting is achieved.
Description
technical field [0001] The invention relates to the technical field of valve manufacturing, in particular to a ball valve. Background technique [0002] Ball valve has become one of the most widely used valves due to its reliable sealing, simple structure and convenient maintenance. Among the ball valves, the top entry ball valve has the advantages of less external leakage points, no influence of pipeline stress on the middle flange, and online maintenance, etc., and is widely used. For small-diameter top-entry valves, due to the limitations of valve structure length and operating space, it is difficult to achieve reliable structural design and convenient online maintenance. [0003] The patent document with the publication number CN102748497A discloses a top-entry ball valve for ultra-low temperature, including a valve body 1, a ball body 2, a valve seat 16, and a valve seat holder 5. The valve seat 16 is set in the groove of the valve seat holder 5 and is tightly connect...
Claims
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IPC IPC(8): F16K5/06F16K5/08F16K5/20
CPCF16K5/0626F16K5/201F16K27/067
Inventor 高云川陈鉴刘远祥
Owner NEWAY VALVE SUZHOU