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Leakage-proof V-shaped ball valve

A valve stem and valve body technology, applied in the field of anti-leakage V-type ball valves, can solve the problems of leakage service life, easy wear of packing, etc., and achieve the effects of reducing wear, prolonging service life and reducing diminishing loss

Active Publication Date: 2017-05-31
KAIRUITE VALVE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing V-shaped ball valve mainly includes a valve body, a V-shaped ball, a valve stem, packing, and the main driving device of the packing gland. The V-shaped balls are connected, the valve stem passes through the inner hole of the packing to connect with the driving device, and the packing gland presses the packing so that a seal is formed between the packing and the valve stem, and between the packing and the inner wall of the groove on the upper part of the valve body, preventing The disadvantage of external leakage is that when the valve stem rotates at 90° to drive the V-shaped ball to open and close its fluid passage, friction will occur between the valve stem and the packing, which makes the packing easy to wear, and the medium is easy to flow between the packing and the valve stem. Leakage between the parts and short service life

Method used

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  • Leakage-proof V-shaped ball valve

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Embodiment Construction

[0011] according to figure 1 It can be seen that an anti-outside leakage V-shaped ball valve of the present invention includes a valve body 1, a valve seat 2, a V-shaped ball 3, a valve stem 4, a lower packing 5, a lower adjustment block 6, a butterfly spring 7, an upper adjustment block 8, an upper adjustment block Packing 9, spacer 10, gland 11.90° driving device 12, the inner cavity of the valve body 1 is provided with a fluid channel, the fluid channel includes an inlet channel and an outlet channel, the middle part of the valve body 1 is provided with a groove-shaped stuffing box, V-shaped ball 3 is set in the outlet channel as a whole, the spherical surface of the V-shaped ball 3 is provided with a spherical sealing surface, the valve seat 2 is installed at the inlet channel, and one end of the valve seat 2 is provided with a tapered sealing surface that forms a line seal with the spherical sealing surface. The lower end of the rod 4 is connected with the V-shaped ball 3...

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Abstract

The invention relates to a leakage-proof V-shaped ball valve which comprises a valve body, a valve seat, a V-shaped ball body, a valve rod and a 90-degree drive device. The leakage-proof V-shaped ball valve is characterized in that upper filler and lower filler are installed in a groove-shaped filler box; an upper adjusting block and a lower adjusting block are installed between the upper filler and the lower filler; a disc spring is installed between the upper adjusting block and the lower adjusting block; a left-hand thread is arranged on the lower portion, in contact with the valve rod, of the upper adjusting block; a right-hand thread is arranged on the upper portion, in contact with the valve rod, of the lower adjusting block; the portions, combined with the upper adjusting block and the lower adjusting block; of the valve rod are provided with threads matched with the left-hand thread of the upper adjusting block and the right-hand thread of the lower adjusting block; a gland is installed on the outer wall of the groove-shaped filler box through the threads; and a cushion block presses the upper filler, the upper adjusting block, the disc spring, the lower adjusting block and the lower filler under the action of downward force of the gland. The leakage-proof V-shaped ball valve has the advantages that automatic compensation is conducted after filler abrasion, a dual seal function of combination of soft seal and metal seal is achieved between the valve rod and the filler, the leakage prevention property is good, and the service life is long.

Description

technical field [0001] The invention relates to a ball valve, in particular to an anti-outside leakage V-shaped ball valve. Background technique [0002] The existing V-shaped ball valve mainly includes a valve body, a V-shaped ball, a valve stem, packing, and the main driving device of the packing gland. The V-shaped balls are connected, the valve stem passes through the inner hole of the packing to connect with the driving device, and the packing gland presses the packing so that a seal is formed between the packing and the valve stem, and between the packing and the inner wall of the groove on the upper part of the valve body, preventing The disadvantage of external leakage is that when the valve stem rotates at 90° to drive the V-shaped ball to open and close its fluid passage, friction will occur between the valve stem and the packing, which makes the packing easy to wear, and the medium is easy to flow between the packing and the valve stem. The parts in between leak ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08F16K41/02
CPCF16K5/0663F16K5/0694F16K5/08F16K41/02
Inventor 李祥庆
Owner KAIRUITE VALVE
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