Floating type seal mouse cage valve

Abstract

The invention discloses a floating type seal mouse cage vale which comprises a valve body, a valve cover, a support frame, a seal seat in the valve body, a balance cylinder in the valve body, a spool in an inner hole of the balance cylinder, a lower valve rod connected with the spool and an upper valve rod connected with the upper end of the lower valve rod. A sleeve provided with a runner hole is disposed in the valve body. A valve positioner is disposed on the support frame. An annular connector is disposed on the outer contour of the lower end of the spool. A clamp piece with the diameter smaller than the connector is disposed at the inner bottom of the connector. A seal piece is disposed above the clamp piece in the connector. The outer diameter of the clamp piece presses the seal piece through seam allowance. The inner diameter of the connector presses the seal piece through seam allowance. Gaps are reserved among the seal piece, the connector and the clamp piece. The fixed seal piece of traditional valves are modified into the floating seal piece, and when valve processing errors and the like cause unsmooth contact of the seal piece, better seal effect can be achieved by automatic adjustment of the floating seal piece.

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...

AI Technical Summary

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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