CN1488873A

CN1488873A - Mangnetic-controlled guide valve

Info

Publication number: CN1488873A
Application number: CNA031451624A
Authority: CN
Inventors: 刘晓岩
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-26
Filing date: 2003-06-26
Publication date: 2004-04-14

Abstract

The present invention relates to a magnetic control director valve which utilizes the isolation magnetic control technology to solve the problems of outward leakage of thermal circulating valve and its bistable reverse, and is characterized by that a passive magnetic body is axially and movably placed in the axle centre of valve cavity of non-magnetic cylindrical director valve body, and the periphery of the valve body is equipped with a pair of repellent combined ring permanent magnets which is correspondent to the said passitive magnetic body and can be used as active magnetic body. The active magnetic body is axially slided, it can attract the passive magnetic body and make it act so as to implement reverse. Said invention is applicable to guide control in natural circulating loop.

Description

The magnetic control pilot valve

The invention belongs to a kind of low pressure two way valve, existing pilot valve opens and closes with the operation of hand lever axis mechanism mostly, this structure needs dynamic seal to stop liquid matter to leak, the sealability instability, have a kind of floating magnetic steering valve to adopt to isolate drive technology in the periphery of valve body with permanent magnet as driving element, the valve plates action of repelling in the powered valve body realizes guiding, this valve external sealed reliable performance (" floating magnetic steering valve " Chinese patent application number: 02240886X), but this valve is a linarity to open and close, non-bistable state and complex structure are difficult for using by dress as automatic control piece in the natural circulation pipeline.

The low pressure pilot valve that the purpose of this invention is to provide a kind of external sealed reliable performance, bistable state commutation.Technological scheme is to scold the annular permanent-magnet body to attract to live with two pairs to place its internal magnetic field axle center and the axially precipitous action of jumping of passive soft magnetic bodies generation of the corresponding two fluid mouths of pipe, realize opening and closing commutation.Experimental results show that: axially living places two pairs to scold the soft magnetic bodies on the annular permanent-magnet body central axis to settle out in permanent magnet internal magnetic field central position separately respectively, when this soft magnetic bodies is promoted to cross two permanent magnet separating surfaces by exterior power, polarity can precipitous counter-rotating, and is attracted the stable state position that jumps to another annular permanent-magnet body internal magnetic field and settles out.

Fig. 1 is the sectional view of small-bore magnetic control pilot valve, Fig. 2 is the sectional view of heavy caliber magnetic control pilot valve, embodiment as shown in Figure 1, 2, two water conservancy diversion drain pipe (5) and (6) are set in the middle axle center of non magnetic valve body (3), and the inner port of two drain pipes is put the non magnetic valve body of a passive magnet (2) (steel strain) to taking on service jobs peripheral corresponding passive magnet has two annular permanent-magnet bodies (1) that repel mutually and be bonded as one.Active permanent magnet shown in Fig. 1 is in the top dead center of sliding stroke, lower magnet (1b) in the active this moment permanent magnet attracts passive magnet to produce downward power, (departing from the about 1mm in stable state position in permanent magnet (1b) internal magnetic field on this passive magnet), the stifled fluid pipeline (6) that closes of passive magnet, open the valve road of input duct (4) to fluid pipeline (5), when active magnet (1) slides descending, scold permanent magnet (1a) and separating surface (1b) radially during the center of corresponding passive magnet for two pairs, scold the passive magnet of the balanced attraction of permanent magnet, divided equally polarization for two pairs; When the separating surface of active magnet is descending when crossing passive magnet center, attracted by the strong magnetic magnetization of permanent magnet (1a), to jump and uply stifledly close fluid pipeline (5), conducting input duct (4) is to the valve road of fluid pipeline (6).Fig. 2 is the sectional view of heavy caliber magnetic control pilot valve, among the figure passive magnet (2) by axostylus axostyle (7) and pedestal (11), axle slide opening (12) along the shaft axis location that endwisely slips, valve plates (8) is fixed on the axostylus axostyle (7) and the inner port of corresponding two liquid valve roads (9) and (10), and sliding, initiatively permanent magnet (1) can the water conservancy diversion commutation.

Claims

A kind of magnetic control pilot valve, comprise magnet (1) initiatively, passive magnet (2), non magnetic valve body (3) and on feed liquor valve road (4) and two liquid valve roads (5,6), it is characterized in that: initiatively magnet (1) is annular permanent-magnet bodies (1a, the 1b) formation of being repelled by two opposition; Initiatively magnet (1) is axially lived and is placed the periphery of non magnetic valve body (3); Passive magnet (2) is a soft magnetic bodies; Passive magnet (2) is lived and is placed non magnetic valve body (3) valve pocket axle center and the peripheral active permanent magnet (1) of radially corresponding non magnetic valve body (3); Passive magnet (2) axially correspondence is in two fluid pipelines (5, the 6) inner port in axle center in the valve body or passes through the inner port that transmission shaft lever (7) connects valve plates (8) corresponding two liquid valve roads (9,10).