CN102996813A - High-pressure and high-sensitivity needle valve - Google Patents
High-pressure and high-sensitivity needle valve Download PDFInfo
- Publication number
- CN102996813A CN102996813A CN2012103875665A CN201210387566A CN102996813A CN 102996813 A CN102996813 A CN 102996813A CN 2012103875665 A CN2012103875665 A CN 2012103875665A CN 201210387566 A CN201210387566 A CN 201210387566A CN 102996813 A CN102996813 A CN 102996813A
- Authority
- CN
- China
- Prior art keywords
- valve
- needle
- valve body
- opening
- cavity
- 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.)
- Pending
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The invention discloses a high-pressure and high-sensitivity needle valve. The needle valve comprises a valve body that is provided with three openings; the three openings are connected with one another by cavity gas circuits of the valve body; the first opening is connected with a valve needle by a fixed core press ring and a press cap sequentially; the second opening is connected with a valve core gas circuit; the third opening is connected with a round joint; an O-shaped ring is arranged between a valve core and a cavity of the valve body; and another O-shaped ring is arranged at the connecting part between the press cap and the valve needle. The O-shaped rings are added between the press cap and the valve needle as well as between the valve core and the cavity of the valve body, so that air leakage is avoided, and the sensitivity of the needle valve is improved.
Description
Technical field
The present invention relates to the highly sensitive needle-valve of a kind of high pressure.
Background technique
Needle-valve is a kind of reset valve, and its valve plug is aciculiform, and is main as the adjusting throughput, realizes that the valve port unlatching becomes large gradually, can fine regulate continuously from being closed to the unlatching maximum.Needle plug is generally with the steel minute hand through quenching, and spool is to make with soft materials such as tin, copper.Reach because the sealing of needle and valve core chamber relies on its conical surface to closely cooperate, the phenomenon that can leak air in the needle-valve work causes sensitivity to descend, and demands urgently improving.
Summary of the invention
Problem for prior art exists the object of the invention is to propose the highly sensitive needle-valve of a kind of high pressure, by enforcement of the present invention, improves needle-valve sensitivity.
For reaching this purpose, the present invention by the following technical solutions:
The highly sensitive needle-valve of a kind of high pressure comprises:
Valve body has three openings, and described three openings connect by the cavity gas circuit of valve body;
Described the first opening is connected with needle with pressure cap by deciding the core trim ring successively, and described the second opening is connected with the spool gas circuit, and described the 3rd opening is connected with round splce;
Be provided with O type circle between the cavity of described spool and valve body, the joint of described pressure cap and needle is provided with O type circle.
Preferably, round splce and valve outer surface contact area are provided with sealer.
Based on disclosing of above technological scheme, the present invention possesses following beneficial effect:
The present invention by increasing O type circle between pressure cap and the needle, between spool and the valve cavity, has avoided gas leakage, has improved needle-valve sensitivity.
Description of drawings
Fig. 1 is the highly sensitive needle valve structure figure of a kind of high pressure of the embodiment of the invention 1.
Reference character:
1, pressure cap; 2, valve body; 3, decide the core trim ring; 4, needle; 5, spool; 6,8,9, O type circle; 7, round splce; 141, sealer.
Embodiment
The embodiment of the invention 1 provides a kind of high pressure highly sensitive needle valve structure, as shown in Figure 1.Wherein, valve body 2 has three openings, by the cavity gas circuit connection of valve body 2; The first opening is connected with pressure cap and is connected with needle 4 by deciding core trim ring 3 successively, and the second opening is connected with spool 5 gas circuits, and the 3rd opening is connected with round splce 7; In order to improve the tightness of needle-valve, O type circle 6,8 is set between the cavity of spool 5 and valve body 2, in the joint of pressure cap 1 and needle 4 O type circle 9 is set.In order further to improve tightness, at round splce 7 and valve body 2 outer surface contact areas sealer 141 is set.Above-mentioned O type circle can be made by the material that rubber etc. has a spring function.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (2)
1. the highly sensitive needle-valve of high pressure is characterized in that, comprising:
Valve body has three openings, and described three openings connect by the cavity gas circuit of valve body;
Described the first opening passes through to decide the core trim ring successively, pressure cap is connected with needle, and described the second opening is connected with the spool gas circuit, and described the 3rd opening is connected with round splce;
Be provided with O type circle between the cavity of described spool and valve body, the joint of described pressure cap and needle is provided with O type circle.
2. the highly sensitive needle-valve of high pressure according to claim 1 is characterized in that, round splce and valve outer surface contact area are provided with sealer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103875665A CN102996813A (en) | 2012-10-12 | 2012-10-12 | High-pressure and high-sensitivity needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103875665A CN102996813A (en) | 2012-10-12 | 2012-10-12 | High-pressure and high-sensitivity needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102996813A true CN102996813A (en) | 2013-03-27 |
Family
ID=47925759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103875665A Pending CN102996813A (en) | 2012-10-12 | 2012-10-12 | High-pressure and high-sensitivity needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996813A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1602176A (en) * | 1978-03-08 | 1981-11-11 | Imi Santon Ltd | Needle valve assembly |
| CN2303134Y (en) * | 1997-01-08 | 1999-01-06 | 北京科电高技术公司 | Vacuum sealing micro-regulation inflating needle valve |
| JP4522833B2 (en) * | 2004-11-30 | 2010-08-11 | 株式会社キッツ | Needle valve |
| CN201875272U (en) * | 2010-11-24 | 2011-06-22 | 四川中油天能科技有限公司 | Permanent magnet zero-leakage pressure tapping mechanism capable of preventing petroleum from burglary |
| CN202228692U (en) * | 2011-09-23 | 2012-05-23 | 郑州华泰特阀有限公司 | Needle valve |
-
2012
- 2012-10-12 CN CN2012103875665A patent/CN102996813A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1602176A (en) * | 1978-03-08 | 1981-11-11 | Imi Santon Ltd | Needle valve assembly |
| CN2303134Y (en) * | 1997-01-08 | 1999-01-06 | 北京科电高技术公司 | Vacuum sealing micro-regulation inflating needle valve |
| JP4522833B2 (en) * | 2004-11-30 | 2010-08-11 | 株式会社キッツ | Needle valve |
| CN201875272U (en) * | 2010-11-24 | 2011-06-22 | 四川中油天能科技有限公司 | Permanent magnet zero-leakage pressure tapping mechanism capable of preventing petroleum from burglary |
| CN202228692U (en) * | 2011-09-23 | 2012-05-23 | 郑州华泰特阀有限公司 | Needle valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201344272Y (en) | Piston type pilot-operated solenoid valve | |
| US20160258538A1 (en) | Valve seat, sealing gasket and pressure valve | |
| CN201344266Y (en) | Piston type pilot-operated solenoid valve with large aperture | |
| IL197340A0 (en) | Battery having air electrode and biased lever gasket | |
| CN102588633A (en) | High-reliability one-way valve | |
| CN104011441B (en) | Relief valve | |
| CN203857047U (en) | Seal structure for piston rod of oil cylinder | |
| CN102996813A (en) | High-pressure and high-sensitivity needle valve | |
| CN204312701U (en) | A kind of seal washer | |
| CN202500847U (en) | Overload valve | |
| CN203906838U (en) | Anti-scouring valve seal structure | |
| CN100554757C (en) | Double sealings high-pressure grease pouring valve | |
| CN103994265A (en) | Novel two-way locking valve | |
| CN207285876U (en) | A kind of micro- formula relief valve of spring for pressure cooker | |
| CN206888775U (en) | A kind of concealed door closer pressure-relief valve structure | |
| CN104001594A (en) | Double-layer-protection nanometer ball milling tank | |
| CN203516864U (en) | Low-leakage high-seal valve | |
| CN204437421U (en) | A kind of oilling machine flow proportion valve | |
| CN206592637U (en) | Angled seat valve | |
| CN204878774U (en) | Shift knob pneumatic valve | |
| CN108286615A (en) | Compound sealing structure for ball valve | |
| CN203394934U (en) | Guide shaft for pneumatic actuator limit switch | |
| CN203453497U (en) | Inflation valve | |
| CN109027222B (en) | Piston and proportional valve comprising same | |
| CN204140991U (en) | Reduction valve flap assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |