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A v-shaped ball valve

A ball valve and valve body technology, applied in the field of V-type ball valves, can solve the problems of easily damaged disc sealing surface and valve seat sealing surface, short service life, easy bonding, etc., to achieve long service life, not easy to leak, The effect of cleaning the disc sealing surface

Active Publication Date: 2020-01-21
温州金鑫生化阀门有限公司
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  • Summary
  • 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 valve seat, a V-shaped ball and a valve stem. The V-shaped ball is placed in the inner cavity of the valve body. The valve seat is provided with a valve seat sealing surface that can form a seal with the valve disc sealing surface. The V-shaped ball is driven by the valve stem and rotates around the ball valve axis. The V-shaped ball and the valve seat cooperate to open and close the fluid. The disadvantage is that when the valve uses a liquid or gas medium with high viscosity, easy crystallization or coking, the medium is easy to stick to the sealing surface of the disc, and it is easy to damage the sealing surface of the disc during opening or closing. and seat sealing surface, prone to leakage and short service life

Method used

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  • A v-shaped ball valve

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Embodiment Construction

[0010] according to figure 1 It can be seen that this V-shaped ball valve includes: valve body 1, valve seat 2, V-shaped ball 3, valve cover 5, bracket 7, valve stem 4, packing 9, gland 8 and driving device 6, and the valve cover 5 is fixed Set on the upper end of the middle part of the valve body 1, the upper end of the bonnet 5 is provided with a stuffing groove, the gland 8 is installed above the stuffing groove, the stuffing 9 is fixedly installed in the stuffing groove by the gland 8, the lower end of the bracket 7 is fixedly connected with the bonnet 5, and the drive The device 6 is fixedly arranged on the upper end of the bracket 7, the V-shaped ball 3 is placed in the inner cavity of the valve body 1 as a whole, the outer surface of the V-shaped ball 3 is provided with a spherical disc sealing surface, the upper end of the valve stem 4 is connected with the driving device 6, and the valve stem 4 The lower end passes through the bracket 7, the gland 8, the packing 9, th...

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Abstract

The invention relates to a V-shaped ball valve, which is characterized in that it further comprises a scraper and a conversion sleeve. The scraper is placed in the valve body cavity and is arranged outside the V-shaped ball. The scraper is provided with a valve disc sealing surface and can be scraped off The arc-shaped blade on the surface of the valve disc sealing surface has a key connection between the upper end of the scraper and the valve stem. A positioning ring is provided at the lower part of the scraper. The ball is also fixed with a positioning sleeve, which forms a round tube structure and is sleeved on the outer circle of the valve stem. A spiral groove with the valve stem axis as the center line is provided at the positioning sleeve, and the conversion sleeve It is set at the lower part of the positioning sleeve. The upper part of the conversion sleeve is provided with a positioning rod that extends into the spiral groove. The internal part of the conversion sleeve is threaded with the valve stem. . It has the advantages of cleaning the sealing surface of the valve disc, preventing leakage easily, and long service life.

Description

technical field [0001] The invention relates to a ball valve, in particular to a V-shaped ball valve. Background technique [0002] The existing V-shaped ball valve mainly includes a valve body, a valve seat, a V-shaped ball and a valve stem. The V-shaped ball is placed in the inner cavity of the valve body. The valve seat is provided with a valve seat sealing surface that can form a seal with the valve disc sealing surface. The V-shaped ball is driven by the valve stem and rotates around the ball valve axis. The V-shaped ball and the valve seat cooperate to open and close the fluid. The disadvantage is that when the valve uses a liquid or gas medium with high viscosity, easy crystallization or coking, the medium is easy to stick to the sealing surface of the disc, and it is easy to damage the sealing surface of the disc during opening or closing. And the sealing surface of the valve seat is prone to leakage and has a short service life. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/08B08B1/00B08B1/02B08B1/20
Inventor 徐国华
Owner 温州金鑫生化阀门有限公司