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Valves with oil film seal structure

A technology of oil film sealing and valves, which is applied in the direction of lifting valves, valve devices, sliding valves, etc. It can solve the problems of laborious opening or closing of the valve body, sealing of the sealing ring cannot meet the demand, and shorten the service life of the valve body. The operation and opening torque are reduced, and the effect of valve damage is small

Active Publication Date: 2019-09-03
开立基业(北京)阀门制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the above-mentioned sealing structure forms a tight sealing fit through extrusion, the sealing surface between the valve seat and the valve core structure will cause surface wear due to extrusion and scraping, which will reduce the service life of the valve body; and due to the above-mentioned sealing structure, the valve Laborious operation when opening or closing the body
In addition, for some equipment that needs to be produced under harsh conditions such as high temperature and high pressure, ordinary sealing rings cannot meet the demand

Method used

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  • Valves with oil film seal structure
  • Valves with oil film seal structure
  • Valves with oil film seal structure

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Embodiment Construction

[0041] Specific embodiments of the present invention such as Figure 1-12 Shown is a valve with an oil film sealing structure, including a valve body 1. A fluid passage 11 is provided in the valve body 1. A valve core 2 that conducts or cuts off the fluid passage 11 is provided in the fluid passage 11. A valve core 2 is also provided in the valve body 1. There is a valve seat 3 that forms a sealed connection with the valve core 2, the valve core 2 is connected to the operating mechanism 5 through the valve shaft 4, the valve body 1 is provided with a valve channel 13 that is adapted to the valve shaft 4, the valve shaft 4 and the valve channel 13 There is a gap between the valve seat 3 and the surface of the valve core 2. The gap is filled with sealing paste. The sealing paste can be grease or ointment with a certain viscosity. The sealing paste is located between the valve seat 3 and the valve core. An oil film-like sealing surface is formed between the surfaces of the core 2...

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Abstract

The invention discloses a valve oil film sealing structure. The valve oil film sealing structure comprises a valve seat arranged on a valve body and a valve element surface arranged in the valve body and corresponding to the valve seat. A gap is reserved between the valve seat and the valve element surface and is filled with sealing paste. The sealing paste is located between the valve seat and the valve element surface to form an oil-film-shaped sealing face. The end face, facing the valve element surface, of the valve seat is provided with a storage groove filled with the sealing paste. The valve seat is provided with a feeding channel, the inlet end of the feeding channel extends to the position of a sealing paste feeding port of the valve body, and the outlet end of the feeding channel communicates with the storage groove. The valve oil film sealing structure has the beneficial effects of being good in closing performance, resistant to abrasion, stable in performance and long in service life.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to an oil film sealing structure suitable for series of floating ball valves, fixed ball valves, butterfly valves, knife gate valves and regulating valves. Background technique [0002] The valve is a control component in the fluid delivery system, which has the functions of cut-off, adjustment, flow diversion, flow diversion, and pressure relief. Valves are widely used in oil, natural gas, mining, petrochemical, electric power and smelting production and other fields. The valve structure in the prior art usually includes a valve body, the valve body is provided with a fluid passage, and a spool structure for blocking or conducting fluid is provided in the fluid passage, the spool structure is connected with the operating mechanism through the valve shaft, and driven The operating mechanism is used to open or close the valve core structure. There is a sealing structure between the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/08F16K1/226F16K3/02F16K3/314F16K3/12F16K1/42F16K1/36
Inventor 薛力
Owner 开立基业(北京)阀门制造有限公司
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