CN2308782Y

CN2308782Y - Permanent-magnet valve

Info

Publication number: CN2308782Y
Application number: CN 97218945
Authority: CN
Inventors: 杨树文
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-09
Filing date: 1997-06-09
Publication date: 1999-02-24
Anticipated expiration: 2007-06-09

Abstract

The utility model relates to a permanent magnet valve which is composed of a valve body, an inner and an outer permanent magnet rotors and a sealing cover, wherein both ends of the inner permanent magnet rotor are concave and are fixedly installed on the upper end of a valve rod, and the outer permanent magnet rotor forms a tile shape and is positioned on the outer side of the inner permanent magnet rotor. The top part of the valve rod is provided with the inner permanent magnet rotor, and the lower end of the valve rod is spirally combined with a valve clack which is fixed in an oblate valve clack sleeve and is positioned between the valve cover and the valve body. The utility model has the advantages of long service life, good sealing property, etc.

Description

Permanent-magnet valve

The utility model relates to a kind of permanent-magnet valve, belongs to the machinery valve technical field.

Existing permanent-magnet valve generally is made up of rotor, external rotor and seal closure etc., and its structure is that a pair of permanent-magnet pole is respectively arranged on inner and outer rotors, and internal rotor places in the seal closure, and external rotor can rotate around seal closure.Valve rod one end links to each other with the internal rotor magnetic pole, and the other end and flap screw with screw thread.Flap can only move up and down and can not rotate by valve body is fixing, thereby realizes the switching of valve opening.This structure valve body is made complicated, and internal rotor surface friction drag is big, and moment of rotation is low.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art and provides a kind of interior p-m rotor to be spill, and outer p-m rotor is a watt shape, and flap is fixed between valve gap and the valve body, valve body structure simplicity of design, the permanent-magnet valve that internal rotor surface friction drag is little.

The purpose of this utility model is that it of realizing like this comprises valve body, inside and outside p-m rotor, seal closure, inside and outside p-m rotor places in the valve body respectively, there is axle sleeve the upper end of valve, its structure outline is: the two ends of interior p-m rotor are spill, be fixedly mounted on the upper end of valve rod, outer p-m rotor is a watt shape, the outside of p-m rotor in placing.Interior p-m rotor is arranged at the top of valve rod, and the lower end screws mutually with flap, and flap is fixed in the oblate flap cover, between valve gap and valve body.

The purpose of this utility model also realizes by following technical measures: inside and outside p-m rotor is by the upper end of inside and outside p-m rotor bracket support at valve rod.Axle sleeve is positioned at the intermediate portion of valve gap, and valve rod is installed in the axle sleeve.The top of seal closure is spill, and there is the convex spindle nose of outer p-m rotor at the spill place, and seal closure and valve body tighten together.

The utlity model has following advantage compared to existing technology:

1, long service life.Valve rod is placed in the valve stem sleeve, and valve stem casing is arranged on the intermediate portion of valve gap, can greatly reduce the surface friction drag of internal rotor, prolongs the working life of valve.

2, good seal performance.By retainer ring, sealing gasket closely is connected with screw between seal closure and valve body.

3, structural design is simple, is easy to industrialized production.

The explanation of accompanying drawing drawing

Fig. 1 is installed in structural representation on the tap forever for the utility model.

Fig. 2 is a permanent magnet rotor structure schematic representation in the utility model.

Fig. 3 is the plan view of the utility model flap cover.

Below in conjunction with drawings and Examples in detail the utility model is described in detail.

Figure Intermediate shaft sleeve (1), spindle nose (2), outer p-m rotor (3), interior p-m rotor (4), valve rod (5), valve gap (6), flap cover (7), flap (8), rotor carriage (9), seal closure (10), pin (11), retainer ring (12), sealing gasket (13), stem shaft (14), seal ring (15), thick rubber pad (16), valve body (17).

The spill permanent-magnet pole that p-m rotor (4) is made by a pair of high strength NdFeB material in of the present utility model is made, and is fixedly mounted on the upper end of valve rod (5) with pin (11).Screw with trapezoidal thread between the other end of valve rod (5) and the flap (8) and be connected, flap (8) is enclosed within the oblate flap cover (8), is fixed between valve gap (6) and the valve body (17).The thick 0.75-1.0mm of flap cover (3), flap (8) can only move up and down in the flap cover, can not rotate.Fig. 3 is the plan view of clack valve cover (7).Outer p-m rotor (3) is supported by rotor carriage (9), is set to a pair of outside that is installed in interior p-m rotor (4), and the magnetic pole of inside and outside p-m rotor is opposite, i.e. S-N, N-S.Outer p-m rotor (3) is a watt shape, places in the seal closure (10), rotates around seal closure (10).In order to achieve the purpose of rotating around seal closure (10), spill place, the top point of p-m rotor (3) is welded with outer p-m rotor convex spindle nose outside.Seal closure (10) closely is connected by retainer ring (12), sealing gasket (13) and screw with valve body (17).Seal closure (10) adopts the non-magnetic stainless steel material of 0.5mm-0.75mm, and its upper end is spill.In order to improve sealability, be provided with thick rubber pad (10) in bottom of the present utility model near between the water tap, between flap cover (7) and the valve body (17) seal ring (15) is arranged.

Working procedure of the present utility model: when p-m rotor (3) rotates outside external force drives,, the interior p-m rotor (4) in the seal closure (10) is also together rotated thereupon by the interaction between the N-S magnetic pole.Owing between valve rod (5) and the flap (8) trapezoidal thread is arranged, both spin together, and flap (8) is enclosed in the flap cover (7), flap (8) can only move up and down, so external force just is transferred on the flap (8) by outer p-m rotor (3), interior p-m rotor (4) and valve rod (5), the control that makes its rising or descend valve opening is opened and closed.

Claims

1, a kind of permanent-magnet valve comprises valve body, inside and outside p-m rotor, seal closure, and inside and outside p-m rotor places respectively in the valve body, and there is axle sleeve the upper end of valve, it is characterized in that:

The two ends of a, interior p-m rotor are spill, are fixedly mounted on the upper end of valve rod, and outer p-m rotor is a watt shape, the outside of p-m rotor in placing;

Interior p-m rotor is arranged at the top of b, valve rod, and the lower end screws mutually with flap, and flap is fixed in the oblate flap cover, between valve gap and valve body.

2, permanent-magnet valve according to claim 1 is characterized in that inside and outside p-m rotor is by the upper end of inside and outside p-m rotor bracket support at valve rod.

3, permanent-magnet valve according to claim 1 is characterized in that axle sleeve is positioned at the intermediate portion of valve gap, and valve rod is installed in the axle sleeve.

4, permanent-magnet valve according to claim 1 is characterized in that the top of seal closure is spill, and there is the convex spindle nose of outer p-m rotor at the spill place, and seal closure and valve body tighten together.