Floating type sealed mouse cage valve

Abstract

The invention discloses a floating type sealed mouse cage valve comprising a valve body, a valve cover, a supporting frame, a sealing base inside the valve body, a balance cylinder inside the valve body, a valve core in an inner hole of the balance cylinder, a lower valve rod connected with the valve core, and an upper valve rod connected with the upper end of the lower valve rod. A sleeve is arranged inside the valve body; a runner hole is formed in the sleeve; a valve positioning device is arranged on the supporting frame; a circular connection piece is arranged on the outer outline of the lower end of the valve core; a circular clamping sheet with the diameter less than that of the connection piece is arranged below the inside of the connection piece; a sealing piece is arranged above the clamping sheet inside the connection piece; the external diameter of the clamping sheet presses the sealing sheet through seam allowance; the internal diameter of the connection piece presses the sealing sheet through the seam allowance; and clearances are reserved between the sealing piece and the connection piece, and between the sealing piece and the clamping sheet respectively. With the adoption of the floating type sealed mouse cage valve provided by the invention, a fixed sealing sheet of the traditional valve is designed to be a floating sealing sheet, so that the good sealing effect can be realized by automatically adjusting the floating sealing sheet when the sealing sheet is in non-flat contact due to factors, such as a valve machining error and the like.

Description

technical field [0001] The invention relates to a floating sealing squirrel cage valve. Background technique [0002] With the enlargement of the pressure swing adsorption device, the pressure difference and flow rate of the medium increase sharply, resulting in the deteriorating working environment of the valve. With the increase of medium pressure difference and flow rate, traditional valves can no longer meet the needs in terms of sealing plate anti-scouring and sealing reliability, which requires improvement and redesign of traditional valves. [0003] After research and experiments, it has been shown that the erosion problem of the sealing sheet is mainly concentrated at the moment when the valve is opened, the flow rate of the medium is too large, and the flow rate of the medium is uncontrollable (because the medium contains particles such as adsorbents, the more particles there are, the greater the damage to the sealing sheet) causes Damage to the seal. Contents of...

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Problems solved by technology

[0002] With the enlargement of the pressure swing adsorption device, the pressure difference and flow rate of the medium increase sharply, resulting in the deteriorating working environment of the valve.

With the increase of medium pressure difference and flow rate, traditional valves can no longer meet the needs in terms of sealing plate anti-scouring and sealing reliability, which requires improvement and redesign of traditional valves.

[0003] After research and experiments, it has been shown that the erosion problem of the sealing sheet is mainly concentrated at the moment when the valve is opened, the flow rate of the medium is too large, and the flow rate of the medium is uncontrollable (because the medium contains particles such as adsorbents, the more particles there are, the greater the damage to the sealing sheet) causes Damage to the seal

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