CN205534374U

CN205534374U - Switch non return controller

Info

Publication number: CN205534374U
Application number: CN201620272073.0U
Authority: CN
Inventors: 孙永庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-05
Filing date: 2016-04-05
Publication date: 2016-08-31
Anticipated expiration: 2026-04-05

Abstract

Switch non return controller relates to valve, concretely relates to tribit cross formula slide valve. Including valve casing (1) and case (2), case (2) are equipped with pull rod (3) of stretching out the valve casing, be equipped with on valve casing (1) a plurality of groups have a perfect understanding around the liquid outlet that advances that is used for the connecting line of wall, every group advances the liquid outlet and includes one inlet (4) and one liquid outlet (5), case (2) are adj. Tabular, be equipped with a plurality of discharge orifices (6) of crossing, make case (2) when different operating position, on case (2) one or a plurality ofly cross a set of on discharge orifices (6) and valve casing (1) or multiunit to enter the liquid outlet position corresponding. It has rational in infrastructure, small, occupation space less and the switch non return controller's that can turn -off in the twinkling of an eye advantage, can satisfy some special pipelines control needs, can accomplish the function of cutting off in the twinkling of an eye under can automatic control cutting in the tube replacement way circulation medium orientation and having the high pressure.

Description

Switching non-return controller

Technical field

This utility model relates to valve, is specifically related to a kind of 3-position 4-way formula slide valve.

Background technology

Switch circulation medium direction on existing pipeline to be operated with manual switches different valve and realize, during circulation medium in the reverse stop valve under high pressure instantaneous trip non-return pipeline cut off, exist and fit badly and the problem of fragile valve, the generation of reflux phenomenon often occurs.Existing cross valve volume is big, takes up space big, and owing to valve core structure limits so that it is inflow-rate of water turbine is restricted, it is impossible to meets the structural requirement of special pipe line structure circulation device, and is difficulty with the functional requirement of instantaneous trip under high pressure.

Summary of the invention

Technical problem to be solved in the utility model is: provide a kind of rational in infrastructure, volume is little, occupy little space and can moment turn off switching non-return controller, to meet some special pipelines control needs, circulation medium direction in switching pipeline can be automatically controlled and complete the function of cut-out with having energy moment under high pressure.

Technical solution of the present utility model is: switching non-return controller, including valve casing and the spool being sealed in valve casing, spool is provided with the pull bar stretching out valve casing, spool different operating position in valve casing can be controlled by pull bar to slide, described valve casing is provided with the liquid in-out mouth for connecting line of some groups of through front and rear walls, often group liquid in-out mouth includes an inlet and a liquid outlet, described spool is tabular, which is provided with some flowing holes, make spool when different operating position, one or more flowing hole on spool is corresponding with a group on valve casing or many group liquid in-out mouth positions, these liquid in-out mouths are made to be in opening state, and when not having flowing hole corresponding with the liquid in-out mouth position on valve casing on spool, then controller is off state.

Of the present utility model have the technical effect that it have rational in infrastructure, volume is little, occupy little space and can moment turn off switching non-return controller advantage, some special pipelines can be met and control needs, circulation medium direction in switching pipeline can be automatically controlled and complete the function of cut-out with having energy moment under high pressure.In the case of thickness varies less or is constant, the aperture of valve opening can be arbitrarily set, make inflow-rate of water turbine to be arranged as required to.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the A-A sectional view of Fig. 1.

Detailed description of the invention

As illustrated in fig. 1 and 2, switching non-return controller, including valve casing 1 and the spool 2 being sealed in valve casing 1, spool 2 is provided with the pull bar 3 stretching out valve casing, the spool 2 different operating position in valve casing 1 can be controlled by pull bar 3 to slide, described valve casing 1 is provided with the liquid in-out mouth for connecting line of some groups of through front and rear walls, often group liquid in-out mouth includes an inlet 4 and a liquid outlet 5, described spool 2 is tabular, which is provided with some flowing holes 6, make spool 2 when different operating position, one or more flowing hole 6 on spool 2 is corresponding with a group on valve casing 1 or many group liquid in-out mouth positions, these liquid in-out mouths are made to be in opening state, and when not having flowing hole 6 corresponding with the liquid in-out mouth position on valve casing 1 on spool 2, then controller is off state.

Described spool 2 is provided with three operating positions and is provided with 4 flowing holes 6, described valve casing 1 is provided with 4 groups of liquid in-out mouths, spool 2 is when the first operating position, controller is off state, when the second operating position, having two flowing holes 6 relative with regard to answering with two groups of liquid in-out mouth positions, when three operating positions, another two flowing hole 6 is relative with another two groups of liquid in-out mouth positions just should.This is set to 3-position 4-way structure, and the operating position of off state can also be located at interposition.

Described flowing hole 6 and described liquid in-out mouth are divided into upper and lower two row's arrangements, so can effectively shorten the length of valve.3-position 4-way structure, flowing hole 6 and liquid in-out mouth are divided equally up and down.During the first operating position, it is off state.During the second operating position, upper left and bottom right liquid in-out mouth are opened.During three operating positions, upper right and lower-left liquid in-out mouth are opened.

The position that the inwall of described valve casing 1 contacts with face before and after described spool 2 is provided with sealant.Sealant uses polytetrafluoro bronze guidance tape, has good sealing and high and low temperature resistance.

Fairlead 7 and sealing ring 8 it is provided with between described pull bar 3 and described valve casing 1.The plate body of spool 2 is configured to parallel two pieces up and down, and pull bar 3 is fixed on the centre of two boards shape body by the beam being connected with spool 2, and two boards shape body separates, and is conducive to sealing.

Pull bar 3 can drive conversion between different operating position with servomotor by screw mandrel.

Claims

null1. switching non-return controller，Including valve casing (1) and the spool (2) that is sealed in valve casing (1)，Spool (2) is provided with the pull bar (3) stretching out valve casing，The spool (2) different operating position in valve casing (1) can be controlled by pull bar (3) to slide，It is characterized in that，Described valve casing (1) is provided with the liquid in-out mouth for connecting line of some groups of through front and rear walls，Often group liquid in-out mouth includes an inlet (4) and a liquid outlet (5)，Described spool (2) is tabular，Which is provided with some flowing holes (6)，Make spool (2) when different operating position，One or more flowing hole (6) on spool (2) is corresponding with a group on valve casing (1) or many group liquid in-out mouth positions，These liquid in-out mouths are made to be in opening state，And when not having flowing hole (6) corresponding with the liquid in-out mouth position on valve casing (1) on spool (2)，Then controller is off state.
Switch non-return controller the most as claimed in claim 1, it is characterized in that, described spool (2) is provided with three operating positions and is provided with 4 flowing holes (6), described valve casing (1) is provided with 4 groups of liquid in-out mouths, and spool (2) is when the first operating position, and controller is off state, when the second operating position, having two flowing holes (6) corresponding with two groups of liquid in-out mouth positions, when three operating positions, another two flowing hole (6) is corresponding with another two groups of liquid in-out mouth positions.
Switch non-return controller the most as claimed in claim 1 or 2, it is characterised in that described flowing hole (6) and described liquid in-out mouth are divided into upper and lower two row's arrangements.
Switch non-return controller the most as claimed in claim 1 or 2, it is characterised in that the position that the inwall of described valve casing (1) contacts with face before and after described spool (2) is provided with sealant.
Switch non-return controller the most as claimed in claim 1, it is characterised in that between described pull bar (3) and described valve casing (1), be provided with fairlead (7) and sealing ring (8).