Sealing structure of valve body and valve seat and gate valve
A technology of sealing structure and valve seat, which is applied to the parts in contact between the valve element and the valve seat, sliding valve, valve details, etc., which can solve the problem that the fragrant rubber material is difficult to withstand high temperature and corrosion resistance, and it is difficult to meet the sealing requirements of chemical production, etc. question
Pending Publication Date: 2020-08-07
SHANGHAI KAIKE VALVE MFG
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Problems solved by technology
Conventional gate valves generally use O-rings to achieve the seal between the valve seat and the valve, because these sealing rings are generally made of rubber, and the rubber material is difficult to withstand high temperature and corrosion resistance, so it is difficult to meet the sealing requirements of chemical production
Method used
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[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will describe each embodiment of the present invention in detail with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in this application can also be realized.
[0035] The first embodiment of the present invention relates to a sealing structure between a valve body and a valve seat, such as figure 1 and Figure 5 As shown, in this embodiment, an annular area 11 for installing the valve seat 2 is opened in the valve body 1, and the annular area 11 includes: the first annular g...
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The embodiment of the invention relates to a gate valve, in particular to a sealing structure of a valve body and a valve seat and a gate valve. An annular zone for installing the valve seat is arranged in the valve body. The annular zone comprises a first circular groove in which the valve seat part is inserted and a second circular groove coaxially connected with the first circular groove, sealing is formed between the valve seat and the groove wall of the first circular groove, the inner diameter of the second circular groove is larger than the inner diameter of the first circular groove, and the groove wall of the second circular groove is separated from the valve seat to form an annular space. The sealing structure comprises an annular carbon sealing piece and an annular resisting andpressing piece which are connected to the valve seat in a sleeving mode; and the sealing structure further comprises a thrust augmentation assembly arranged in the annular space, and the thrust augmentation assembly is used for pushing and locking the annular resisting and pressing piece in the direction of the groove bottom of the second annular groove. Compared with the prior art, it is ensuredthat seamless sealing can be realized between the valve seat and the valve body, and meanwhile, with the help of the characteristics of high temperature resistance and corrosion resistance of the annular carbon sealing piece, the whole gate valve can meet the usage requirements of chemical production.
Description
technical field [0001] Embodiments of the present invention relate to a gate valve, in particular to a sealing structure between a valve body and a valve seat and a gate valve with the sealing structure. Background technique [0002] In petrochemical, coal chemical, polysilicon, power plant ash removal, mud, boiler slag discharge and other material systems, gate valves are often used as switching elements to cut off the pipelines of the material system, because the conveying temperature of these media in the material system is generally higher. High (generally greater than or equal to 500 ° C), so it is particularly important for the sealing performance of the gate valve, that is, when the sealing between the valve seat and the valve body. Conventional gate valves generally use O-rings to achieve the seal between the valve seat and the valve, because these sealing rings are generally made of rubber, and the rubber material is difficult to withstand high temperature and corro...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16K3/02F16K3/20F16K3/30F16K25/04
CPCF16K3/0227F16K3/20F16K3/30F16K25/04
Inventor 王良王健
Owner SHANGHAI KAIKE VALVE MFG