Valve plate structure of butterfly valve and manufacturing method
A valve plate and butterfly valve technology, which is applied to the plate structure of butterfly valve and its manufacturing field, can solve the problems of easy wear on the edge, low precision of the valve plate, and low metal density, so as to improve wear resistance and efficiency , The effect of improving the accuracy
Pending Publication Date: 2018-11-30
陈颖翚
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Problems solved by technology
[0002] At present, the valve plate of the butterfly valve is generally cast by metal. During the casting process, a large amount of waste gas will be discharged and a certain amount of waste residue will be generated, which will seriously pollute the environment. At the same time, the valve plate produced by the casting process has no air gap metal density because it has not been forged. , so that the strength of the valve plate is not high. The edge of the valve plate produced by the casting process is easy to wear after a period of use, which affects the service life of the disc valve; The precision of the valve plate is generally not high, and it needs secondary processing in the later stage; the process is complicated and the efficiency is low
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[0013] Such as Figure 1-4 As shown, a valve plate structure of a butterfly valve is characterized in that it includes a circular upper valve plate 1 and a lower valve plate 2, and the middle part of the lower valve plate 2 is provided with an axial depression that runs through the valve plate front and back. 21. Both sides of the axial recess 21 are distributed symmetrically; on the top surface of the lower valve plate 2, there is also a circular groove 22 concentrically arranged with the lower valve body, and the size of the circular groove 22 is the same as that of the upper valve body. The size of the valve plate 1 is matched; the middle part of the upper valve plate 1 is also provided with a shaft hole protrusion 11 that runs through the upper valve plate front and rear, and the front and rear ends of the axial protrusion 11 continue to extend outward until the shaft The length of the convex part matches the length of the axial concave part; the upper valve plate 1 is acc...
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The invention relates to a valve plate structure of a butterfly valve. The valve plate structure comprises a round upper valve plate and a round lower valve plate, wherein an axial concave part, whichpenetrates through the valve plate from front to back, is arranged in the middle of the lower valve plate; two sides of the axial concave part are distributed in a bilaterally symmetrical manner; a top surface of the lower valve plate is further provided with a round groove which is concentric with the lower valve plate; the size of the round groove is matched with the size of the upper valve plate; an axial protruding part, which penetrates through the upper valve plate from front to back, is also formed in the middle of the upper valve plate; front and rear ends of the axial protruding partcontinuously extend outward until the length of the axial protruding part is matched with the length of the axial concave part; the upper valve plate is stored in the round groove of the lower valveplate and is welded with the lower valve plate to form a whole body; the axial concave part and the axial protruding part are mutually buckled to form a shaft hole of the valve plate. The valve platestructure of the butterfly valve has the characteristics of reasonable structure, high precision and durability.
Description
technical field [0001] The invention relates to a valve, in particular to a valve plate structure of a butterfly valve and a manufacturing method thereof. Background technique [0002] At present, the valve plate of the butterfly valve is generally cast by metal. During the casting process, a large amount of waste gas will be discharged and a certain amount of waste residue will be generated, which will seriously pollute the environment. At the same time, the valve plate produced by the casting process has no air gap metal density because it has not been forged. , so that the strength of the valve plate is not high, the edge of the valve plate produced by the casting process is easy to wear after a period of use, which affects the service life of the disc valve; at the same time, due to the thermal expansion and contraction of the metal, the casting process The precision of the valve plate is generally not high, and it needs secondary processing in the later stage; the proce...
Claims
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IPC IPC(8): F16K1/22F16K1/36B23P15/00
CPCF16K1/222B23P15/001
Inventor 陈颖翚
Owner 陈颖翚