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Drain valve with removable liner

A discharge valve, lining technology, applied in the direction of valve device, valve detail, sliding valve, etc., can solve the problem of expensive, long stop time, etc.

Active Publication Date: 2020-02-07
VALMET OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is expensive and additionally involves lengthy downtimes in the process, since the process will have to be interrupted while the process equipment cools and is being cleaned so that the worn discharge valve can be disengaged from all couplings and a new discharge Valve can be installed in obsolete valve position

Method used

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  • Drain valve with removable liner
  • Drain valve with removable liner
  • Drain valve with removable liner

Examples

Experimental program
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Embodiment Construction

[0029] It should be understood that the drawings are schematic and the various components are not necessarily drawn to scale. The discharge valves shown in the figures are provided as examples only and should not be construed as limiting the invention. Accordingly, the scope of the invention is to be determined only by the appended claims.

[0030] Although described as implemented in connection with a refiner in a pulping process, the principles of the present disclosure are equally applicable to other systems (cold or hot) where abrasive material is discharged from a pressurized process chamber into a pipeline, open air or into another processing chamber. Since the abrasiveness of a material depends both on the material itself and on the surrounding environment, the term "abrasive" is used to describe the processing of a material in which the material can be considered abrasive. For example, at low temperatures a material may not be considered abrasive, but at higher tempe...

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PUM

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Abstract

A discharge valve (20) comprising a valve housing (21) is functionally connectable to a treatment element (10) having a pressurized interior space. The valve housing (21) includes a flow channel (22) having a longitudinal central axis (A) and operatively cooperating with a valve member (23). A flow channel (22) is provided in fluid communication with the pressurized interior space in the processing element (10) after the discharge valve (20) has been connected to the processing element (10). The valve member (23) is displaceable in a displacement direction (B) between an open position and a closed position, whereby the discharge valve (20) can be opened and closed. The flow channel (22) includes a removable inner liner (25) having an envelope wall (26), wherein the removable inner liner (25) includes holes (30) extending through the envelope wall (26), The valve member (23) is adapted to run through the bore when displaced between an open position and a closed position.

Description

technical field [0001] The present invention relates to discharge valves, in particular for use in manufacturing processes involving the handling of lignocellulosic materials, such as pulp manufacturing processes or processes for the manufacture of biofuels. The discharge valve includes a valve housing connectable to a processing element having a pressurized internal processing volume. The valve housing includes a flow passage which is in operative cooperation with the valve member and which is arranged in fluid communication with the pressurized internal treatment volume of the treatment element after the discharge valve has been connected to the treatment element. The valve member is arranged to be displaceable in the flow passage in a displacement direction at an angle to the longitudinal center axis of the flow passage such that the valve member is movable along the displacement direction between a fully open position and a fully or partially closed position. Background ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C7/08F16K3/24
CPCF16K3/24D21C7/04F16K27/041D21C7/08
Inventor O·阿尔格伦P·尼博格
Owner VALMET OY