CN2519072Y - Air valve - Google Patents

Air valve Download PDF

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Publication number
CN2519072Y
CN2519072Y CN 01256869 CN01256869U CN2519072Y CN 2519072 Y CN2519072 Y CN 2519072Y CN 01256869 CN01256869 CN 01256869 CN 01256869 U CN01256869 U CN 01256869U CN 2519072 Y CN2519072 Y CN 2519072Y
Authority
CN
China
Prior art keywords
valve
valve seat
valve body
utility
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 01256869
Other languages
Chinese (zh)
Inventor
张云珍
李建凤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Optics and Electronics of CAS
Original Assignee
Institute of Optics and Electronics of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Optics and Electronics of CAS filed Critical Institute of Optics and Electronics of CAS
Priority to CN 01256869 priority Critical patent/CN2519072Y/en
Application granted granted Critical
Publication of CN2519072Y publication Critical patent/CN2519072Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a gas valve which belongs to the improvement of the mini optic charge and discharge device. The utility model is characterized in that the valve base(3) is closely connected with the device; the gas pipe connector(1) is helix connected with the valve base(3); the valve body(5) can horizontally slide in the valve cavity(3); the gas passage(9) on the valve body(5) is connected or disconnected with the venting holes(8) on the valve base(3). The utility model has the advantages of rational structure and design, simple and convenient process technics, small product size, good sealing capability, changeable use of the charge and discharge valve and wide temperature range.

Description

Novel air valve
Technical field
The utility model is a kind of novel air valve, belong to the compact optical instrument dry with fill, the improvement of bleed valve structure.
Background technique
When optical instrument is operated in the very high environment of humidity, must regularly pass to dry air to instrument internal, for this reason instrument need be provided with fill, bleed valve.For strengthening drying effect, instrument internal air pressure is greater than external environment condition air pressure, and general difference is 20Kpa-40Kpa, needs to show in case difference is excessive with the barometer prison, damages optical instrument.The contemporary optics instrument structurally trends towards miniaturization, and volume is little, in light weight; Its Environmental Conditions requires more abominable, and operating temperature range reaches-40~+ 60 ℃.Correspondingly to fill, bleed valve also proposed to carve severe requirement, promptly volume is little, is fit to bad working environment.
Now Chang Yong gas charging valve, bleed valve physical dimension are all relatively large, and can't connect inner with the extraneous draught head of barometer optical viewer, fill, bleed valve can not exchange use; The big and serviceability temperature of the longitudinal size of fine setting vacuum valve is-5~+ 80 ℃, and low temperature is not enough, can not satisfy use, and adapter and valve seat can not throw off, and influences air-tightness.
Summary of the invention:
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and a kind of novel air valve is provided, and to satisfy the air-tightness requirement of Modern Small optical instrument, volume miniaturization, available barometer prison show, adapt to the rugged environment requirement
The purpose of this utility model can reach by following measure: novel air valve, constitute by valve seat, valve body, airtight circle and spring, valve seat and instrument are to be closely connected, gas-tpe fitting is threaded with valve seat, valve body can move horizontally at valve base cavity, and air vent on the valve body and the vent on the valve seat are connected (or disconnection).
The purpose of this utility model can also reach by following measure: there is trim ring on the valve seat top, and airtight circle is all arranged on valve body and the gas-tpe fitting.
The utility model has following advantage compared to existing technology:
1, structural design is simple, and processing technology is easy, and product size is little, and with the supporting use of optical instrument, air-tightness is good: pressure decline≤10Kpa/30min, fill, the use of bleed valve has interchangeability; Bleed valve can connect barometer, at any time inner the and ambient pressure difference of optical viewer.
2, increase the temperature using scope, hot operation temperature+50 ℃; Storing temperature+75 ℃; Temperature variability: (0.7~1) ℃/min, temperature stabilization time: 2h; Operating time: 1h; Memory time: 12h.Low-temperature working temperature-43 ℃; Storing temperature-45 ℃; Temperature variability: (0.7~1) ℃/min, temperature stabilization time: 2h; Operating time: 1h; Memory time: 12h.
3, air-tightness is good.Detecting method: dry gas is charged in the instrument, make the pressure gauge indication reach 20Kpa, stop inflation, observe 30min, the pressure gauge indicated pressure descends should be less than 10Kpa.Testing result :≤2Kpa/30min
Description of drawings:
Fig. 1 is the utility model structural drawing
Fig. 2 is the utility model working state structure figure
Mode of execution:
The utility model is further described below in conjunction with accompanying drawing:
As shown in Figure 1: air valve by fill, exhaust tube joint, airtight circle, valve seat, valve body, spring and trim ring form.Valve seat 3 and instrument 10 are to be closely connected, and binding site is coated with vacuum silicone rubber with anti-gas-leak.Gas-tpe fitting 1 is threaded with valve seat 3, promote simultaneously by the valve body 5 that spring 6 supports move horizontally at valve seat 3 inner chambers, air vent 9 on the valve body 5 connects (or disconnection) with the vent 8 on the valve seat 3.There is trim ring 7 on valve seat 3 tops, and airtight circle 4,2 is arranged on valve body 5 and the gas-tpe fitting 1.
As shown in Figure 2: when instrument needs drying, one end of gas tube joint 1 connects dry tracheae 11, the other end is threaded, promotes simultaneously valve body 5 and airtight circle 4 and moves horizontally at valve seat 3 inner chambers with valve seat 3, air vent 9 on the valve body 5 is connected with the vent 8 on the valve seat 3, dry gas enters instrument internal, and instrument is carried out drying.Simultaneously, do the bleed valve time spent, gas-tpe fitting 1 is connected with barometric leg 12, exhaust tube joint 1 is threaded with valve seat 3, promote valve body 5 and airtight circle 4 and move horizontally, the air vent 9 on the valve body 5 is connected with the vent 8 on the valve seat 3, realize observation instrument internal air pressure at valve seat 3 inner chambers.
After the dry end of instrument internal, make fast fill, exhaust tube joint 1 breaks away from valve seat 3, valve body 5 and airtight circle 4 are under the effect of spring 6, move horizontally in the other direction at valve seat 3 inner chambers, air vent 9 and the vent on the valve seat 38 on the valve body 5 are disconnected, thereby realize instrument internal environment and extraneous isolation.

Claims (2)

1, novel air valve, constitute by valve seat, valve body, airtight circle and spring, it is characterized in that: valve seat (3) and instrument are to be closely connected, gas-tpe fitting (1) is threaded with valve seat (3), promote by the valve body (5) that spring (6) supports move horizontally at valve seat (3) inner chamber, air vent (9) on the valve body (5) connects (or disconnection) with the vent (8) on the valve seat (3).
2, novel air valve as claimed in claim 1 is characterized in that there is trim ring (7) on valve seat (3) top, has airtight circle (4), (2) on valve body (5) and the gas-tpe fitting (1).
CN 01256869 2001-12-11 2001-12-11 Air valve Expired - Fee Related CN2519072Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01256869 CN2519072Y (en) 2001-12-11 2001-12-11 Air valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01256869 CN2519072Y (en) 2001-12-11 2001-12-11 Air valve

Publications (1)

Publication Number Publication Date
CN2519072Y true CN2519072Y (en) 2002-10-30

Family

ID=33665738

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01256869 Expired - Fee Related CN2519072Y (en) 2001-12-11 2001-12-11 Air valve

Country Status (1)

Country Link
CN (1) CN2519072Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206551A (en) * 2013-03-14 2013-07-17 北京工业大学 Valve element for automatic backlash compensation
CN103991524A (en) * 2014-05-09 2014-08-20 宁波市成大机械研究所 Gas bag capable of autoinflation underwater
CN103991523A (en) * 2014-05-09 2014-08-20 宁波市成大机械研究所 Airbag capable of autoinflation underwater
CN103991522A (en) * 2014-05-09 2014-08-20 宁波市成大机械研究所 Airbag capable of autoinflation underwater

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206551A (en) * 2013-03-14 2013-07-17 北京工业大学 Valve element for automatic backlash compensation
CN103991524A (en) * 2014-05-09 2014-08-20 宁波市成大机械研究所 Gas bag capable of autoinflation underwater
CN103991523A (en) * 2014-05-09 2014-08-20 宁波市成大机械研究所 Airbag capable of autoinflation underwater
CN103991522A (en) * 2014-05-09 2014-08-20 宁波市成大机械研究所 Airbag capable of autoinflation underwater
CN103991522B (en) * 2014-05-09 2017-03-08 宁波市成大机械研究所 Can automatic inflating under water airbag

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee