CN202579158U

CN202579158U - Pressure-maintaining lead high-pressure pneumatic control unloading valve

Info

Publication number: CN202579158U
Application number: CN 201220214539
Authority: CN
Inventors: 宫禄齐
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-14
Filing date: 2012-05-14
Publication date: 2012-12-05
Anticipated expiration: 2022-05-14

Abstract

The utility model relates to a pressure-maintaining lead high-pressure pneumatic control unloading valve, and belongs to the technical field of pipeline valve structures. The pressure-maintaining lead high-pressure pneumatic control unloading valve is characterized by consisting of a cylinder, an upper valve body, a pressing rod, O-shaped rings, pressing rod springs, a lower valve body, a valve sleeve, an outer conical valve core, an inner conical valve core, an inner conical valve core spring and a lead needle, wherein the pressing rod with the first O-shaped ring and the pressing rod springs are arranged in the upper valve body; the valve sleeve, the outer conical valve core, the inner conical valve core, the inner conical valve core spring, the lead needle and the third O-shaped ring are arranged in the lower valve body; the second O-shaped ring for sealing is arranged between the upper valve body and the lower valve body; and the cylinder is arranged on the upper part of the upper valve body. The pressure-maintaining lead high-pressure pneumatic control unloading valve is simple and rational in structure, can realize a pressure-maintaining function in an ultrahigh-pressure system of 70MPa and perform automatic unloading, is operated flexibly and is long in service life.

Description

But pressurize type pilot ultra-high pressure gas control unloading valve

Technical field

But the utility model relates to a kind of pressurize type pilot ultra-high pressure gas control unloading valve, belongs to the pipe valve technical field of structures.

Background technique

At present, but mostly the unloading valve of the 70MPa ultrahigh pressure pressurize of using on the hydraulic power unit is manually operated valve, can't realize automatic control, and most solenoid valve pressure maintaining performance is general, thereby has influence on the automation control of system.

Summary of the invention

The purpose of the utility model just is to provide a kind of can accomplish automatic deloading with pneumatic control under 70MPa pressure, and has the type pilot ultra-high pressure unloading valve of pressure holding function.

The utility model is realized through following technological scheme:

But pressurize type pilot ultra-high pressure gas control unloading valve; Its specialization is by cylinder, upper valve body, depression bar, O type circle, Pressure-bar spring, valve body, valve pocket, outer poppet valve core, interior poppet valve core, inner cone valve core spring, first guide pin are formed down, and the depression bar 2 that an O type circle 4 is housed is assemblied in the upper valve body 3 with Pressure-bar spring 5, and valve pocket 11, outer poppet valve core 8, interior poppet valve core 10, inner cone valve core spring 9, first guide pin 13 and the 3rd O type circle are housed in the following valve body 7; Upper valve body 3 and 7 of following valve bodies are provided with the 2nd O type circle and are used for sealing; Cylinder 1 is installed in upper valve body 3 tops, and cylinder is the effect of starting force source in valve, and is simple and reliable for structure; Ouput force is big, is easy to realize automatic control.

The utility model linkage editor and working procedure:

Be assembled to 3 li of upper valve bodies with Pressure-bar spring 5 after installing to an O type circle 4 on the depression bar 2 earlier; Again valve pocket 11, outer poppet valve core 8, inner cone valve core spring 9, interior poppet valve core 10, the 3rd O type circle 12 and first guide pin 13 are installed in down 7 li of valve bodies; With sealing with the 2nd O type circle 6 between upper valve body 3 and the following valve body 7, cylinder 1 is contained in upper valve body 3 tops again.

When cylinder 1 was failure to actuate, outer poppet valve core 8 in the following valve body and interior poppet valve core 10 leaned on spool conical surface seal separately under the effect of inner cone valve core spring 9, and valve does not have leakage, is in packing state.

When system needed off-load, at first cylinder 1 inflation promoted piston, through depression bar 2, first guide pin 13; In power is delivered on the poppet valve core 10, because the guide's pinhole diameter on the outer poppet valve core 8 is less, the active force of interior poppet valve core 10 suffered systems is little; So first guide pin 13 can be opened interior poppet valve core 10, system begins guide's off-load, at this moment; Outer poppet valve core 8 suffered hydraulic thrust are promoted to open by depression bar 2 thereupon reducing, the beginning two-stage unloading.

The utility model is simple and reasonable for structure, owing to utilize cylinder to carry out off-load as power source, ouput force is big, and unloading valve both can be accomplished pressure holding function in the extra high voltage system of 70MPa, can realize automatic deloading, flexible operation, long service life again.

Description of drawings

Fig. 1: be the utility model structural representation;

Among the figure: 1, cylinder, 2, depression bar, 3, upper valve body, the 4, the one O type circle, 5, Pressure-bar spring; 6, the 2nd O type circle, 7, following valve body, 8, outer poppet valve core, 9, the inner cone valve core spring; 10, interior poppet valve core, 11, valve pocket, the 12, the 3rd O type circle, 13, first guide pin.

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.

But the pressurize type pilot ultra-high pressure gas control unloading valve of present embodiment; Be made up of cylinder, upper valve body, depression bar, O type circle, Pressure-bar spring, following valve body, valve pocket, outer poppet valve core, interior poppet valve core, inner cone valve core spring, first guide pin, the depression bar 2 that an O type circle 4 is housed is assemblied in the upper valve body 3 with Pressure-bar spring 5, and valve pocket 11, outer poppet valve core 8, interior poppet valve core 10, inner cone valve core spring 9, first guide pin 13 and the 3rd O type circle are housed in the following valve body 7; Upper valve body 3 and 7 of following valve bodies are provided with the 2nd O type circle and are used for sealing; Cylinder 1 is installed in upper valve body 3 tops, and cylinder is the effect of starting force source in valve, and is simple and reliable for structure; Ouput force is big, is easy to realize automatic control.

But the pressurize type pilot ultra-high pressure gas control unloading valve linkage editor and the working procedure of present embodiment:

Claims

1. but pressurize type pilot ultra-high pressure gas control unloading valve; It is characterized in that forming by cylinder, upper valve body, depression bar, O type circle, Pressure-bar spring, following valve body, valve pocket, outer poppet valve core, interior poppet valve core, inner cone valve core spring, first guide pin; The depression bar (2) that the one O type circle (4) is housed is assemblied in the upper valve body (3) with Pressure-bar spring (5); Valve pocket (11), outer poppet valve core (8), interior poppet valve core (10), inner cone valve core spring (9), first guide pin (13) and the 3rd O type circle (12) are housed in the following valve body (7); Be provided with the 2nd O type circle (6) between upper valve body (3) and following valve body (7), cylinder (1) is installed in upper valve body (3) top.