CN202629085U

CN202629085U - Stop valve

Info

Publication number: CN202629085U
Application number: CN 201220126746
Authority: CN
Inventors: 徐铁峰; 李春祥; 陈晓辉; 李开铭
Original assignee: Beijing Research Institute of Mechanical and Electrical Technology
Current assignee: Beijing Research Institute of Mechanical and Electrical Technology
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2012-12-26
Anticipated expiration: 2022-03-30

Abstract

The utility model provides a stop valve which comprises a ball end, a jacket nut, a needle-type valve and a valve shell. The needle-type valve is arranged into an inner passage of the valve shell from the upper part of the valve shell and is in threaded connection with the inside of the valve shell; the inner passage of the valve shell is sealed by a needle head of the needle-type valve; the ball end is seated at the upper part of the valve shell; the jacket nut is sleeved outside the ball end and is connected with the upper part outside the valve shell by a screw thread; and the upper end of the inner passage of the valve shell is sealed by the ball end. The utility model designs the following two sealing links: the sealing of the needle-type valve and the valve shell and the sealing of the ball end and the valve shell; under the condition that two sealed positions are screwed down, the redundancy design is formed, so that the sealing reliability of the valve can be improved; the stop valve and a conventional pipeline ball end connecting piece are merged to be designed; the stop valve has a compact structure and is reliable to seal; when the stop valve is in use, the ball end and the jacket nut are disassembled; the convenient and reliable sealed connection between the stop valve and other epitaxial equipment can be implemented by utilizing the structural form of the stop valve; and the stop valve is convenient to use and is suitable for oil supply and drainage and inflation and deflation of various oil circuit and gas circuit systems.

Description

A kind of by valve

Technical field

The utility model relates to a kind of by valve, particularly relates to a kind of ventilation (oil) that is used on the oil-fired system and uses by valve, belongs to field of mechanical technique.

Background technique

Valve kind commonly used on domestic aircraft, the guided missile is a lot, and they are bearing different functions separately, and require high reliability, compact structure.

Present carry-on valve mainly is divided into two kinds from seal form, and a kind of is the valve of single sealing configuration, and another kind is the valve of double sealing structure.The latter is used for other external device the operation position of docking being arranged more.Owing to will adopt the double sealing structure, can make that generally the valve volume is bigger.

The model utility content

The purpose of the utility model is to overcome the existing technology deficiency, a kind of compact structure, high reliability are provided, be suitable for various oil circuits and gas circuit oil-fired system by valve.

The technical solution of the utility model: a kind of by valve; Comprise bulb, cap nut, pin type valve and valve body; Pack into from the valve body top inner passage of valve body and be connected of pin type valve with the valve body inside thread, the syringe needle of pin type valve is with the sealing of valve body inner passage, and bulb is sitting in the top of valve body; Cap nut be enclosed within bulb outside and with the outer upper of valve body through being threaded, bulb is with the upper end sealing of the inner passage of valve body.

Described pin type valve is a column construction wide at the top and narrow at the bottom, syringe needle be the top be radius less than the circular arc of 1mm, the conical structure that angle is 60 ± 1 °, its Elongation is greater than 3.

The penetrating reducing inner passage of processing, described valve body center, top, inner passage is the round taper hole that cooperates with bulb, the middle part is the tapped hole that cooperates with pin type valve, outside processing and the hard-wired journal stirrup of external equipment.

The utility model beneficial effect compared with prior art:

(1) the utility model is designed with the two seals link: the sealing of the sealing of pin type valve and valve body, bulb and valve body, all tighten under the situation at the two seals place, and form Redundancy Design, can improve the sealing reliability of valve;

(2) the utility model merges design with pipeline bulb link commonly used; Compact structure; Sealing is reliable, with bulb and cap nut removal, utilizes its structural type can realize being tightly connected easily and reliably with other epitaxial device during use; Easy to use, what be applicable to various oil circuits and air-channel system logically drains the oil and leads to venting;

(3) the utility model has not only solved the unlatching and the sealing problem of valve, has also well solved the connectivity problem with outer attached device.And compact structure, the space hold size is little, and sealing reliability is high

(4) the utility model adopts all metal construction, can adapt to various oil circuits, air-channel system and various high low temperature working environment.

Description of drawings

Fig. 1 is the utility model overall structure schematic representation;

Fig. 2 is the utility model pin type valve plan view;

Fig. 3 is the utility model pin type valve syringe needle enlarged view;

Fig. 4 is the utility model valve body plan view;

Fig. 5 is the sectional view of Fig. 4 B-B direction.

Embodiment

Below in conjunction with accompanying drawing and instantiation the utility model is elaborated.

The utility model is as shown in Figure 1; Comprise bulb 1, cap nut 2, pin type valve 3 and valve body 4; Pack into from the valve body 4 tops inner passage 41 of valve body 4 and be connected of pin type valve 3 with valve body 4 inside threads; The syringe needle of pin type valve 3 seals valve body 4 inner passages; Bulb 1 is sitting in the top of valve body 4, cap nut 2 be enclosed within bulb 1 outside and with the outer upper of valve body 4 through being threaded, bulb 1 is with the upper end sealing of the inner passage 41 of valve body 4.

Pin type valve 3 is column construction wide at the top and narrow at the bottom like Fig. 2, shown in 3, top fluting, syringe needle be the top be radius less than the circular arc of 1mm, the conical structure that angle is 60 ± 1 °, its Elongation is greater than 3, syringe needle conical surface roughness requires less than 0.8.Adopt the design of pin type stop valve, the ingenious pipeline inner space that utilizes makes whole valve structure compact.

Valve body 4 is like Fig. 4, shown in 5, and the center processes penetrating reducing

inner passage

41, and 41 tops, inner passage are the round taper hole that cooperates with bulb 1, and the middle part is the tapped hole that cooperates with pin type valve 3, outside processing and the hard-wired journal stirrup 42 of external equipment.Valve body 4 adopts the forging system of milling to accomplish its profile, Vehicle Processing endoporus again.The cone angle of round taper hole is 60 ± 1 °, and conical surface roughness is less than 0.8.

Cap nut 2 is the pipeline standard piece of selecting or making according to the relevant criterion of HB4 with bulb 1.Bulb 1 is used for being connected with relevant epitaxial device with cap nut 2, and its Interface design is followed conventional pipeline connecting parts design, has reduced the interface requirements of epitaxial device.The utility model valve exterior mechanical interface merges design with pipeline bulb link commonly used, can be connected easily and reliably with other epitaxial device.

The utility model assembling and using process:

During assembling, earlier pin type valve 3 is packed in the valve body 4, twist the fluting at pin type valve 3 tops with instrument, pack into according to this after reliably tightening bulb 1 and cap nut 2, and with the spanner cap nut 2 of screwing, the valve assembling is accomplished.

Before the use, can utilize the installation journal stirrup 42 on the valve body 4 to be fixed on the equipment as required.The cap nut 2 of outwarding winding, and take off cap nut 2 and bulb 1, expose pin type valve 3.With the straight screwdriver pin type valve 3 of outwarding winding, accomplish the unlatching of oil circuit or gas circuit, accomplish the correlation function operation.Also can be after bulb 1, cap nut 2 take off; Utilize the screw thread of valve body 4 and conical surface seal to be connected on the valve body 4 other relevant epitaxial device; After the valve opening device that carries on the epitaxial device is turned on pin type valve 3, can accomplish the correlation function operation.

The unspecified part of the utility model is a technology as well known to those skilled in the art.

Claims

1. one kind is ended valve; It is characterized in that: comprise bulb (1), cap nut (2), pin type valve (3) and valve body (4); Pack into from valve body (4) the top inner passage (41) of valve body (4) and be connected of pin type valve (3) with valve body (4) inside thread; The syringe needle of pin type valve (3) seals valve body (4) inner passage; Bulb (1) is sitting in the top of valve body (4), cap nut (2) be enclosed within bulb (1) outside and with the outer upper of valve body (4) through being threaded, bulb (1) is with the upper end sealing of the inner passage (41) of valve body (4).

2. according to claim 1 a kind of by valve, it is characterized in that: described pin type valve (3) is a column construction wide at the top and narrow at the bottom, syringe needle be the top be radius less than the circular arc of 1mm, the conical structure that angle is 60 ± 1 °, its Elongation is greater than 3.

3. according to claim 1 a kind of by valve; It is characterized in that: the penetrating reducing inner passage (41) of processing, described valve body (4) center; Top, inner passage (41) is the round taper hole that cooperates with bulb (1); The middle part is the tapped hole that cooperates with pin type valve (3), outside processing and the hard-wired journal stirrup of external equipment (42).