Special valve for powder medium
A special valve and powder technology, applied in valve details, valve device, valve shell structure, etc., can solve problems such as increasing the friction between the ball valve and the valve seat sealing surface, valve conduction blockage, and increased switching torque. Achieve the effect of protecting the inner wall of the valve, easy to clean, and reasonable and simple structure design
Active Publication Date: 2020-09-25
浙江氟田阀门制造有限公司
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Problems solved by technology
[0002] The valve used for the delivery of powder in chemical plants, because its conveying medium is powdery particles, it is easy to have powdery particles attached to the ball and the inner wall of the valve after long-term use, and the powdery particles attached to the ball will affect the ball. The sealing effect between the ball valve and the sealing surface of the valve seat increases the friction between the ball valve and the sealing surface of the valve seat, resulting in an increase in the switching torque of the valve, which is not easy to open and close
When the particles attached to the inner wall of the valve are serious, the conduction of the valve will be blocked. Therefore, if the powdery particles attached to the valve are not dealt with in time, the performance of the valve will be seriously affected.
Method used
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Embodiment Construction
[0015] refer to figure 1 to combine figure 2 , image 3 , Figure 4 It can be seen that the present invention: a special valve for powder medium, including a valve body, a ball 1 and a valve stem 2, the end of the valve stem 2 is connected with a handle 10, and the valve body includes two symmetrical half valve bodies 3, and the half valve body 3. Flange 31 and connecting part 32 are integrally formed. The two symmetrical valve bodies 3 are fixedly connected by bolt assembly 4 at the connecting part 32 to form ball 1 accommodation chamber 7 and packing chamber 8. The two half valve bodies 3 are in contact with each other. A gasket 12 is provided between the surfaces, a valve seat 71 is provided in the accommodating cavity 7, the ball 1 and the valve stem 2 are located between the two half valve bodies 3, and the ball 1 and the half valve body 3 are provided with Channel 5, the inner wall of the half valve body 3 is covered with a protective layer 16, and a buffer layer (no...
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The invention relates to a special valve for powdery mediums. A valve body consists of left and right symmetrical half valve bodies; the half valve bodies are integrally molded with flanges and connecting parts; the two symmetrical half valve bodies are fixedly connected on the connecting parts through bolt modules to form a sphere accommodating cavity and a filling cavity; a valve base is arranged in the accommodating cavity; a sphere and a valve rod are positioned between the two half valve bodies; channels are formed in the sphere and the half valve bodies; first protecting layers are coated on the inner walls of the half valve bodies; buffer layers are arranged between the first protecting layers and the inner walls of semispheres; a second protecting layer is coated on the sphere; a press and a sealing ring are arranged in the filling cavity in sequence from top to bottom; and a fluorine rubber sealing ring is arranged in a groove. The special valve for the powdery mediums can conveniently take out the sphere inside for cleaning through the split structure arrangement of the valve body; meanwhile, the protecting layers are provided for protecting the inner wall of the valve body; and meanwhile, seals are provided to the connected place of the two valve bodies and the connected place of the flange and a pipe.
Description
technical field [0001] The invention relates to the technical field of valves, in particular to a special valve for powder medium. Background technique [0002] The valve used for the delivery of powder in chemical plants, because its conveying medium is powdery particles, it is easy to have powdery particles attached to the ball and the inner wall of the valve after long-term use, and the powdery particles attached to the ball will affect the ball. The sealing effect between the ball valve and the sealing surface of the valve seat increases the friction between the ball valve and the sealing surface of the valve seat, resulting in an increase in the switching torque of the valve, which is not easy to open and close. When the particles attached to the inner wall of the valve are serious, the conduction of the valve will be blocked. Therefore, if the powdery particles attached to the valve are not dealt with in time, the performance of the valve will be seriously affected. ...
Claims
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IPC IPC(8): F16K27/06F16K5/06F16K5/08F16K5/20
CPCF16K5/0668F16K5/0689F16K5/08F16K5/201F16K27/067
Inventor 张海跃
Owner 浙江氟田阀门制造有限公司