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Valve lower shaft hole and valve plate anti-drooping structure

An anti-sagging, shaft-hole technology, applied to the valve shell structure, valve details, valve device, etc., can solve problems such as liquid leakage and valve plate leakage, and achieve the effect of reducing friction and ensuring safety

Inactive Publication Date: 2020-04-24
TIANJIN FSK FLOW CONTROL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The shaft hole of the valve body is an important part of the seal. If the seal is not good, serious liquid leakage will occur. At present, when the valve is installed in the vertical direction and used for a long time, the gravity of the valve plate itself will sag, which is easy to cause The valve plate leaks at the end of the upper shaft hole

Method used

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  • Valve lower shaft hole and valve plate anti-drooping structure

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Embodiment Construction

[0007] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. Such as figure 1 As shown, a valve lower shaft hole and valve plate anti-sagging structure, including valve body 1, first O-ring 2, second O-ring 3, rear plug 4, valve plate 5, lower valve shaft 6, support Bolts 7, lock nuts 8 and wear-reducing pads 9; the rear plug is fixed to the bottom of the valve body through bolts, and the rear plug is provided with a raised portion upward, and a groove is arranged around the raised portion , the first O-ring is set in the groove, and the lower shaft hole of the valve body is provided with a chamfer 10, which forms an annular cavity with a triangular cross-section with the raised part of the back plug, where the cavity The second O-ring is installed in the middle, and the lower shaft hole of the valve plate is provided with a step hole 11, which is matched with the ...

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Abstract

The invention relates to the technical field of butterfly valves, in particular to a valve lower shaft hole and valve plate anti-drooping structure. The valve lower shaft hole and valve plate anti-drooping structure comprises a valve body, a first O-shaped ring, a second O-shaped ring, a rear plug cover, a valve plate, a lower valve shaft, a supporting bolt, a locking nut and an abrasion reductionpad; and the rear plug cover is fixed to the bottom of the valve body through bolts and upwards provided with a bulged part, a groove is formed in the circumference of the bulged part, the first O-shaped ring is arranged in the groove, a chamfer is arranged at a lower shaft hole of the valve body and forms an annular cavity with the triangular section together with the bulged part of the rear plug cover, the second O-shaped ring is mounted in the cavity, a step hole is formed in a hole opening of a lower shaft hole of the valve plate and matched with a step on the lower valve shaft, the supporting bolt and the locking nut are fixed into threaded holes in the end of the lower valve shaft, and the rear plug cover corresponding to the supporting bolt is provided with the abrasion reduction pad. According to the valve lower shaft hole and valve plate anti-drooping structure, by arranging the two O-shaped rings on the rear plug cover, a safe sealing structure is formed for the lower shafthole of the valve body, and thus the safety of the shaft holes is guaranteed.

Description

technical field [0001] The invention relates to the technical field of butterfly valves, in particular to a valve lower shaft hole and a valve plate anti-sagging structure. Background technique [0002] The shaft hole of the valve body is an important part of the seal. If the seal is not good, serious liquid leakage will occur. At present, when the valve is installed in the vertical direction and used for a long time, the gravity of the valve plate itself will sag, which is easy to cause The valve plate is leaking at the bore end of the upper shaft. Contents of the invention [0003] The main purpose of the present invention is to solve the above problems and provide an anti-sagging structure for the lower shaft hole of the valve and the valve plate to prevent external leakage. [0004] In order to achieve the above purpose, the present invention adopts the following technical solutions: a valve lower shaft hole and valve plate anti-sagging structure, which is characteriz...

Claims

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Application Information

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IPC IPC(8): F16K27/00F16K51/00F16J15/02
CPCF16J15/02F16K27/00F16K51/00
Inventor 范全军曹士芳
Owner TIANJIN FSK FLOW CONTROL EQUIP