Valve sand resisting structure
A technology for valves and valve seats, which is applied in the field of anti-sand structure of valves, which can solve the problems of easily scratched sealing surface, reduced service life, easy deposition of pipeline rust residue, etc., and achieves good anti-sand effect and improved service life
Pending Publication Date: 2018-03-13
TIANJIN BAILIZHANFA GRP +1
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Problems solved by technology
[0002] At present, when the ball valve in the prior art is in the open or closed position, there is a certain gap between the valve seat and the ball, and impurities such as gravel and rust residue in the pipeline are easily deposited.
When the valve is switched on and off, the deposited impurities such as gravel and rust residue can easily scratch the sealing surface, causing great damage to the sealing of the valve and greatly reducing the service life.
Method used
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Embodiment Construction
[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0021] A valve anti-sand structure, including a valve body 7, a ball core 2, a valve seat 4 and an anti-sand cover 1, see attached Figures 1 to 2 As shown, the valve body is made with a medium passage that runs through in a horizontal direction. The direction of the arrow shown in the attached figure is the flow direction of the medium. A ball core 2 that can cut off the medium passage is installed in the valve body in the middle of the medium passage of the valve body. The ball core and the two Valve seats 4 are installed between the contact surfaces of the medium passages on the side; the ball core is formed with a through hole on the same plane as the medium passage, and the rotation of the ball c...
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The invention relates to a valve sand resisting structure. The valve sand resisting structure comprises valve bodies, ball elements, valve bases and sand resisting sleeves; the ball elements capable of cutting off medium channels are rotationally mounted in the valve bodies at the middle parts of the medium channels of the valve bodies; the valve bases are mounted between the contacted surfaces ofthe ball elements and the medium channels on two sides; the ball elements can be rotated to communicate with or close the medium channels; rotating gaps are formed between the ball elements and the valve bases; the sand resisting sleeves with rubber materials are mounted on the inner diameters of the valve bases in a coaxial limiting manner; sand resisting sleeve bodies are of cylindrical structures; one transverse ends of the sand resisting sleeves are fixedly mounted in the valve bodies; and the other transverse ends of the sand resisting sleeves are in interference contact with the ball elements. The valve sand resisting structure is excellent in sand resisting effect, can effectively prevent such impurities as gravels and rust slag from precipitating in gaps between the valve bases and spheres, and prevents the impurities of the gravels, the rust slag and the like, deposited in the gaps between the valve bases and the spheres, from scratching sealing surfaces in the valve openingand closing process to greatly prolong the valve service life.
Description
technical field [0001] The invention relates to the field of ball valves, and relates to a sand-resistant technology for valves in working conditions containing impurities such as gravel and rust residue, in particular to a sand-resistant structure for valves. Background technique [0002] At present, when the ball valve in the prior art is in the open or closed position, there is a certain gap between the valve seat and the ball, and impurities such as gravel and rust residue in the pipeline are easily deposited. When the valve is switched on and off, the deposited impurities such as gravel and rust residue can easily scratch the sealing surface, which will greatly damage the sealing of the valve and greatly reduce the service life. [0003] After searching, no published patents similar to this patent application have been found. Contents of the invention [0004] The object of the present invention is to overcome the disadvantages of the prior art, and provide a valve s...
Claims
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IPC IPC(8): F16K5/06F16K5/08
CPCF16K5/06F16K5/08
Inventor 李永超范希磊曲莹朱小宾
Owner TIANJIN BAILIZHANFA GRP