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Valve shaft supporting structure of large-diameter butterfly valve

A technology of supporting structure and large diameter, applied in the direction of lift valve, valve device, engine components, etc., can solve the problems of dislocation of valve plate and valve seat sealing pair, high replacement and maintenance cost, extension of large-diameter valve, etc., so as to reduce maintenance cost. , The structure is simple, the effect of prolonging the maintenance cycle

Inactive Publication Date: 2010-05-26
江苏鑫通环保科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The existing valve shaft support structure can easily cause the valve plate to sink, resulting in the misalignment of the valve plate and the valve seat sealing pair, resulting in a decrease in the sealing effect, especially in the use of large-diameter butterfly valves. Due to the large-diameter butterfly valve Large-scale lifting equipment and the cooperation of many departments are required for disassembly and maintenance, and the cost of replacement and maintenance is high. Therefore, extending the maintenance cycle of large-diameter valves is an effective way to reduce maintenance costs and reduce or eliminate unfavorable factors caused by valve plate sinking. It has become the direction pursued by butterfly valve manufacturing

Method used

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  • Valve shaft supporting structure of large-diameter butterfly valve
  • Valve shaft supporting structure of large-diameter butterfly valve

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Embodiment Construction

[0008] The specific content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0009] Such as figure 1 As shown, the valve shaft supporting structure of the large-diameter butterfly valve includes: a valve shaft 1, both ends of the valve shaft 1 are arranged on the outside of the valve body 2, and both ends of the valve shaft 1 are respectively arranged on the on bearing housing 4.

[0010] Such as figure 1 As shown, when the valve shaft support structure with the above structure is installed on a large-diameter butterfly valve, the valve plate 5 is fixedly arranged on the valve shaft 1 inside the valve body 2 , and one end of the valve shaft 1 is connected to the driving device 6 . Due to the support at both ends of the valve shaft, the sinking of the valve shaft 1 and the valve plate 5 can be effectively prevented, and the seal leakage caused by the dislocation of the sealing pair can be avoi...

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Abstract

The invention discloses a valve shaft supporting structure of a large-diameter butterfly valve, which can prevent a valve shaft from sinking. The valve shaft supporting structure comprises a valve shaft; the two ends of the valve shaft are arranged outside a valve body; and the two ends of the valve shaft are respectively arranged on a bearing seat through a supporting bearing. The valve shaft supporting structure has the advantages that the valve shaft supporting structure of the large-diameter butterfly valve adopting the mode of supporting by the two ends of the valve shaft can effectively eradicate the phenomenon of the sinking of the valve shaft and a valve plate, avoid the phenomenon of the leakage of a sealing pair caused by the misplacement of the sealing pair, and simultaneously avoid the phenomenon of expansion and shaft hung caused by the variation of temperature of pipeline media, the structure is simple, the maintenance period of the large-diameter butterfly valve is prolonged, and the maintenance cost of the large-diameter butterfly valve is effectively reduced.

Description

technical field [0001] The invention relates to a butterfly valve, in particular to a valve shaft supporting structure of a large-diameter butterfly valve. Background technique [0002] Most of the valve shaft support in the existing butterfly valve adopts the support bearing at the bottom of the valve shaft, and the top of the valve shaft does not have a bearing but is directly connected with the driving device. The existing valve shaft support structure can easily cause the valve plate to sink, resulting in the misalignment of the valve plate and the valve seat sealing pair, resulting in a decrease in the sealing effect, especially in the use of large-diameter butterfly valves. Due to the large-diameter butterfly valve The disassembly and maintenance of large-scale lifting equipment and the cooperation of many departments are required, and the cost of replacement and maintenance is high. Therefore, extending the maintenance cycle of large-diameter valves is an effective wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K1/32
Inventor 赵志亚梁海珠
Owner 江苏鑫通环保科技有限公司
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