CN203570724U

CN203570724U - High-pressure three-position valve

Info

Publication number: CN203570724U
Application number: CN201320610060.6U
Authority: CN
Inventors: 胡德成; 郑峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2014-04-30
Anticipated expiration: 2023-09-30

Abstract

A high-pressure three-position valve is composed of a valve body, a valve sleeve, a valve rod, a return base, a spring, a spring seat, a connecting rod, a piston, a pilot head base, a pilot head assembly and a coil, wherein the valve sleeve is placed at the center of the interior of the valve body, the valve body and the valve sleeve are sealed with a sealing ring, the two ends of the valve body are positioned with gaskets which are located in the valve body, the valve rod capable of moving back and forth in the valve sleeve is placed at the center of the interior of the valve sleeve, a first working air pressure port, a second working air pressure port, a control air pressure port and an exhaust port are sequentially formed in the bottom of the valve body, two ventilation ports are formed in the upper portion of the valve body, and a working cavity is formed above the two ventilation ports. The high-pressure three-position valve has the advantages that (1) a working air channel is separated from a control air channel; (2) the working air channel is clearance-sealed with metal; (3) four functions are achieved; (4) the structure is compact, the size is small and combination is facilitated; (5) the service life is long, response is sensitive, and reversing can be achieved fast.

Description

High pressure three-position valve

Technical field

The utility model relates to solenoid valve field, relates in particular to a kind of high pressure three-position valve.

Background technique

Existing high pressure three-position valve is combined by three bi-bit bi-pass diaphragm electromagnetic valves, and the gas circuit of working in the process of design is not separated with control gas circuit, also exists volume large, inconvenience combination, reaction slow motion, the defect that the life-span is not long.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that prior art exists, and the high pressure three-position valve that a kind of compact structure, volume are little, be convenient to combination is provided.

The purpose of this utility model completes by following technical solution, it is comprised of valve body, valve pocket, valve rod, recurrence seat, spring, spring seat, connecting rod, piston, guide's headstock, pilot head assembly, coil, described valve inner center is placed with valve pocket, between valve body and valve pocket, with seal ring, seal, locate with packing ring at two ends, and this packing ring is positioned at valve body; This valve pocket inside center is placed with a valve rod that can move back and forth in valve pocket; The bottom of described valve body offers successively the first operating air pressure mouth, the second operating air pressure mouth, controls air pressure mouth and relief opening, and the top of valve body offers two ventilating holes, above these two ventilating holes, is provided with active chamber.

As preferably, guide's headstock, piston, pilot head assembly and coil are equipped with respectively in described valve body two ends, and wherein the B of valve body end is also equipped with and returns seat, spring, spring seat, connecting rod; Described coil is fixed on pilot head assembly, and pilot head assembly is fixed on guide's headstock; The guide's headstock arranging on the A end of valve body is fixed on the left side of valve body by cross recessed countersunk head sscrew, guide's headstock on B end is fixed on the right side of valve body with recurrence seat by cross recessed countersunk head sscrew, between this guide's headstock, recurrence seat and valve body, be respectively equipped with O type circle, in guide's headstock, be provided with the YX seal ring for sealing with piston space.

As preferably, the piston on described A end and valve lever clearance floating connection, the piston clearance floating connection on B end has connecting rod, and connecting rod is connected with threaded stem; On connecting rod, cover has two corresponding spring seats, is provided with spring, and fixes with nut between this spring seat, and one of them of this spring seat is limited in and returns seat end, and another is limited in the packing ring end of valve body.

The beneficial effects of the utility model are: 1, work gas circuit is separated with control gas circuit; 2, the sealing of work gas circuit adopts metal gap sealing; 3, valve four functions (i.e. the first operating air pressure, the second operating air pressure, envelope gas, exhaust); 4, compact structure, volume is little, is convenient to combination; 5, the life-span long, be quick on the draw, commutation action is fast.

Accompanying drawing explanation

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

?label in accompanying drawing is respectively: 1, coil; 2, terminal box; 3, pilot head assembly; 4, guide's headstock; 5, YX seal ring; 6, piston; 7, O type circle; 8, packing ring; 9, valve pocket; 10, seal ring; 11, valve rod; 12, valve body; 13, active chamber; 14, return seat; 15, spring; 16, spring seat; 17, nut; 18, connecting rod; 19, cross recessed countersunk head sscrew; 20, ventilating hole; 121, the first operating air pressure mouth; 122, the second operating air pressure mouth; 123, control air pressure mouth; 124, relief opening.

Embodiment

Below in conjunction with accompanying drawing, the utility model is done to detailed introduction: as shown in Figure 1, the utility model is comprised of valve body 12, valve pocket 9, valve rod 11, recurrence seat 14, spring 15, spring seat 16, connecting rod 18, piston 6, guide's headstock 4, pilot head assembly 3, coil 1, described valve body 12 inside center are placed with valve pocket 9, between valve body 12 and valve pocket 9, with seal ring 10, seal, locate with packing ring 8 at two ends, and this packing ring 8 is positioned at valve body 12; These valve pocket 9 inside center are placed with a valve rod 11 that can move back and forth in valve pocket 9; The bottom of described valve body 12 offers successively the first operating air pressure mouth 121, the second operating air pressure mouth 122, controls air pressure mouth 123 and relief opening 124, and the top of valve body offers two ventilating holes 20, is provided with active chamber 13 above these two ventilating holes 20.

Guide's headstock 4, piston 6, pilot head assembly 3 and coil 1 are equipped with respectively in described valve body 12 two ends, and wherein the B of valve body 12 end is also equipped with and returns seat 14, spring 15, spring seat 16, connecting rod 18; Described coil 1 is fixed on pilot head assembly 3, and pilot head assembly 3 is fixed on guide's headstock 4; The guide's headstock 4 arranging on the A end of valve body 12 is fixed on the left side of valve body 12 by cross recessed countersunk head sscrew 19, guide's headstock 4 on B end is fixed on the right side of valve body 12 with recurrence seat 14 by cross recessed countersunk head sscrew 19, this guide's headstock 4, return seat 14 and be respectively equipped with O type circle 7 with 12 of valve bodies, in guide's

headstock

4 and 6, piston be provided with the YX seal ring 5 for sealing.Piston 6 and valve rod 11 gap floating connections on described A end, the piston 6 gap floating connections on B end have connecting rod 18, and connecting rod 18 is threaded with valve rod 11; On connecting rod 18, cover has two

corresponding spring seats

16, and 16 of this spring seats are provided with spring 15, and fixing with nut 17, and one of them of this spring seat 16 is limited in and returns seat 14 ends, and another is limited in packing ring 8 ends of valve body 12.

Working principle of the present utility model is:

Coil 1 energising of A end, pilot head assembly 3 work of A end, control air pressure mouth 123 and by controlling air pressure, promote the piston 6 of A end, and the piston 6 of A end promotes valve rod 11, and relief opening 124 is closed, and active chamber 13 obtains the first operating air pressure.

Coil 1 energising of B end, pilot head assembly 3 work of B end, control air pressure mouth 123 and by controlling air pressure, promote the piston 6 of B end, and the piston 6 of B end promotes valve rod 11, and relief opening 124 is closed, and active chamber 13 obtains the second operating air pressure.

Coil 1 no electric circuit of A, B end, the pilot head assembly 3 of A, B end is not worked, and during valve rod 11 is answered by spring force, seals the first operating air pressure mouth 121, the second operating air pressure mouth 122, relief opening 124 exhausts.

The utility model is not limited to above-mentioned mode of execution; no matter do any variation in its shape or material formation; every employing structural design provided by the utility model, is all a kind of distortion of the present utility model, all should think within the utility model protection domain.

Claims

1. a high pressure three-position valve, by valve body (12), valve pocket (9), valve rod (11), recurrence seat (14), a spring (15), spring seat (16), connecting rod (18), piston (6), guide's headstock (4), pilot head assembly (3), coil (1), formed, it is characterized in that: described valve body (12) inside center is placed with valve pocket (9), between valve body (12) and valve pocket (9), with seal ring (10), seal, packing ring for two ends (8) location, this packing ring (8) is positioned at valve body (12); This valve pocket (9) inside center is placed with a valve rod (11) that can move back and forth in valve pocket (9); The bottom of described valve body (12) offers successively the first operating air pressure mouth (121), the second operating air pressure mouth (122), controls air pressure mouth (123) and relief opening (124), the top of valve body offers two ventilating holes (20), in the top of these two ventilating holes (20), is provided with active chamber (13).

2. high pressure three-position valve according to claim 1, it is characterized in that: guide's headstock (4), piston (6), pilot head assembly (3) and coil (1) are equipped with respectively in described valve body (12) two ends, wherein the B of valve body (12) end is also equipped with and returns seat (14), spring (15), spring seat (16), connecting rod (18); It is upper that described coil (1) is fixed on pilot head assembly (3), and pilot head assembly (3) is fixed on guide's headstock (4); The guide's headstock (4) arranging on the A end of described valve body (12) is fixed on the left side of valve body (12) by cross recessed countersunk head sscrew (19), guide's headstock (4) on B end is fixed on the right side of valve body (12) with recurrence seat (14) by cross recessed countersunk head sscrew (19), between this guide's headstock (4), recurrence seat (14) and valve body (12), be respectively equipped with O type circle (7), in guide's headstock (4) and between piston (6), be provided with the YX seal ring (5) for sealing.

3. high pressure three-position valve according to claim 2, it is characterized in that: the piston (6) on described A end and valve rod (11) gap floating connection, piston on B end (6) gap floating connection has connecting rod (18), and connecting rod (18) is threaded with valve rod (11); The upper cover of connecting rod (18) has two corresponding spring seats (16), between this spring seat (16), be provided with spring (15), and fixing with nut (17), one of them of this spring seat (16) is limited in and returns seat (14) end, and another is limited in packing ring (8) end of valve body (12).