CN202579400U

CN202579400U - Ultra-high pressure stop valve

Info

Publication number: CN202579400U
Application number: CN 201220211614
Authority: CN
Inventors: 宫禄齐
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-12
Filing date: 2012-05-12
Publication date: 2012-12-05
Anticipated expiration: 2022-05-12

Abstract

The utility model relates to an ultra-high pressure stop valve, which belongs to the technical field of a stop valve structure. The ultra-high pressure stop valve comprises a valve body, a valve core, O-shaped rings, check rings, a red copper cushion, a pressing cap and a hand wheel, and is characterized in that the valve core is provided with three groups of the O-shaped rings and the check rings which are respectively arranged in the upper position, the middle position and the lower position and are respectively composed of a first O-shaped ring and a first check ring, a second O-shaped ring and a second check ring as well as a third O-shaped ring and a third check ring, the valve core is inserted in the valve body, the pressing cap and the valve body are sealed through the red copper cushion, a cavity body which is defined by the valve body, the valve core, the red copper cushion, the first O-shaped ring arranged at the upper part of the valve core and the second O-shaped ring arranged at the middle part of the valve core is communicated with an oil outlet of the valve body through a pilot hole, and the area difference between the second O-shaped ring which is arranged at the middle part of the valve core and the first O-shaped ring which is arranged at the upper part of the valve core is equal to the area of the third O-shaped ring which is arranged at the lower part of the valve core. The ultra-high pressure stop valve disclosed by the utility model has the advantages that the structure is reasonable, the manufacturing is simple, the ultra-high pressure stop valve can be manually and easily switched on and off in a 70MPa ultra-high pressure system, the operation is flexible, and the service life is long.

Description

Ultra-high pressure stopped valve

Technical field

When the utility model relates to a kind of ultra-high pressure stopped valve, especially hydraulic system pressure and is 70MPa, can be normally manual a kind of valve of easy manipulation, belong to the stop valve structure technical field.

Background technique

At present, the stop valve of using on the hydraulic machinery, its seal ring and back-up ring generally have only one group, can only when system pressure is low, carry out switching manipulation, and when pressure is higher when reaching 70MPa, the handwheel of stop valve rotates very difficulty, and influences the life-span of seal ring.

Summary of the invention

It is a kind of rational in infrastructure that the purpose of the utility model just is to provide, and can under 70MPa pressure, manually easily carry out the type pilot ultra-high pressure stop valve of valve switch operation.

The utility model is realized through following technological scheme:

Ultra-high pressure stopped valve; Comprise by valve body, spool, O type circle, back-up ring, red copper pad, pressure cap and handwheel and forming; Its specialization is to be equipped with on the spool 3 upper, middle and lower three groups of O types circle and back-up ring; Be respectively an O type circle 7 and first back-up ring 6, the 2nd O type circle 9 and second back-up ring 10, the 3rd O type circle 12 and the 3rd back-up ring 11; Spool 3 is inserted on the valve body 5; Through red copper pad 8 sealing, be communicated with through pilot hole H between an O type circle 7 on valve body, spool, red copper pad and spool top, the cavity that middle part the 2nd O type circle 9 surrounds and the valve body oil outlet between pressure cap 4 and the valve body 5, the 2nd O type circle 9 in the middle part of the while spool equates with the area of bottom the 3rd O type circle 12 with the difference of the area of an O type circle 7 on spool 3 tops.At this moment the suffered equilibrium of forces of spool, when system pressure is 70MPa, through the light turn switching spool valve of handwheel ability, reaches under the situation of ultrahigh pressure, easily the purpose of switch valve like this.

The beneficial effect of the utility model: rational in infrastructure, make simple, stop valve can be in the system of 70MPa ultrahigh pressure manual light switch, flexible operation, long service life, convenient and practical.

Description of drawings

Fig. 1: be the utility model structural representation;

Fig. 2: be A portion enlarged view among Fig. 1

Among the figure: 1, nut, 2, handwheel, 3, spool, 4, pressure cap, 5, valve body; 6, first back-up ring, the 7, the one O type circle, 8, the red copper pad, the 9, the 2nd O type circle, 10, second back-up ring; 11, the 3rd back-up ring, the 12, the 3rd O type circle, H, pilot hole, M, screw thread.

Embodiment

Following with reference to accompanying drawing, provide the embodiment of the utility model, be used for the formation of the utility model is further specified.

The ultra-high pressure stopped valve of present embodiment comprises by valve body, spool, O type circle, back-up ring, red copper pad, pressure cap and handwheel and forming, and is as shown in Figure 1; Spool 3 is assembled together through screw thread M and valve body 5, and pressure cap 4 is pressed on red copper pad 8 on the valve body 5, plays seal action; Handwheel 2 is fitted together with spool 3, and is fixing through nut 1, rotation hand wheel 2; Spool 3 can rotate in valve body 5, move up and down, through the conical surface of spool 3 bottoms and the switch of valve body 5 formation valves.Be characterized in being equipped with on the spool 3 upper, middle and lower three groups of O types circle and back-up ring; Be respectively an O type circle 7 and first back-up ring 6, the 2nd O type circle 9 and second back-up ring 10, the 3rd O type circle 12 and the 3rd back-up ring 11; Spool 3 is inserted on the valve body 5; Seal through red copper pad 8 between pressure cap 4 and the valve body 5; Be communicated with through pilot hole H between the one O type circle 7 on valve body, spool, red copper pad and spool top, the cavity that middle part the 2nd O type circle 9 surrounds and the valve body oil outlet, the 2nd O type circle 9 at spool middle part equates with the area of bottom the 3rd O type circle 12 with the difference of the area of an O type circle 7 on spool 3 tops simultaneously.The suffered equilibrium of forces of spool like this, at this moment, when system pressure was 70MPa, through the light turn switching spool valve of handwheel, no flowed friction laborsavingly easily reached under the situation of ultrahigh pressure the purpose of light switch valve.

The ultra-high pressure stopped valve arrangement of present embodiment is reasonable, make simple, stop valve can be in the system of 70MPa ultrahigh pressure manual light switch, flexible operation, long service life, convenient and practical.

Claims

1. ultra-high pressure stopped valve; Comprise by valve body, spool, O type circle, back-up ring, red copper pad, pressure cap and handwheel and forming; It is characterized in that being equipped with on the spool (3) upper, middle and lower three groups of O types circle and back-up ring; Be respectively an O type circle (7) and first back-up ring (6), the 2nd O type circle (9) and second back-up ring (10), the 3rd O type circle (12) and the 3rd back-up ring (11); Spool (3) is inserted on the valve body (5); Seal through red copper pad (8) between pressure cap (4) and the valve body (5); Be communicated with through pilot hole (H) between the one O type circle (7) on valve body, spool, red copper pad and spool top, the cavity that middle part the 2nd O type circle (9) surrounds and the valve body oil outlet, the 2nd O type circle (9) at spool middle part equates with the area of bottom the 3rd O type circle (12) with the difference of the area of an O type circle (7) on spool (3) top.