CN204164455U - A kind of needle valve reduction valve - Google Patents
A kind of needle valve reduction valve Download PDFInfo
- Publication number
- CN204164455U CN204164455U CN201420589341.2U CN201420589341U CN204164455U CN 204164455 U CN204164455 U CN 204164455U CN 201420589341 U CN201420589341 U CN 201420589341U CN 204164455 U CN204164455 U CN 204164455U
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- China
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- valve
- needle
- regulation spring
- spring
- briquetting
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Abstract
The utility model discloses a kind of needle valve reduction valve.The technical problem solved is to provide a kind of spool that improves under low-pressure low-temperature and controls sensitivity, improves the needle valve reduction valve of the valve precision of voltage regulation.For solving the problem, the technical solution adopted in the utility model comprises valve body, valve gap, described valve gap wears regulating handle, described regulating handle front end sets gradually Regulation spring briquetting, Regulation spring, it is characterized in that: described valve body, in inner chamber between valve gap, convolution diaphragm is set, needle-valve relief valve seat is set between described convolution diaphragm and Regulation spring, described convolution diaphragm arranges valve core of needle valve, described valve core of needle valve upper end coordinates with described needle-valve relief valve seat, lower end is coordinated with Returnning spring by Returnning spring briquetting, described needle-valve relief valve seat, valve gap arranges exhaust port respectively, overflow hole.
Description
Technical field
The utility model belongs to pneumatic field, is specifically related to a kind of reduction valve.
Background technique
Reduction valve is an indispensable accessory of pneumatic control valve, and Main Function is by the pressure of source of the gas and is stabilized to a definite value, so that modulating valve can obtain stable source of the gas power for regulable control.Diaphragm type, spring diaphragm type, piston type, Lever type and bellow type can be divided into by structural type.Reduction valve more common on market is mostly the diaphragm type structure that normal temperature adopts nozzle flapper to amplify.Such as a series of patents of Chongqing Chuanyi Automation CO., Ltd's application have the pneumatic pressure-release valve (publication number: 103697203A) of regulator, have the pneumatic pressure-release valve (publication number: 103672060A) of relief function; The pneumatic pressure-release valve (notification number: 202691199U) of Hangzhou Peng Hang Machinery Manufacturing Co., Ltd.; 201228792) etc. the Pneumatic air pressure reducing valve of Lu Pixian (notification number: be all this structure.When carrying out accurate voltage regulating, especially when low-temp low-pressure pressure regulation there is the low problem of voltage stabilizing sensitivity in this reduction valve.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of spool that improves under low-pressure low-temperature and controls sensitivity, improves the needle valve reduction valve of the valve precision of voltage regulation.
For solving the problem, the technical solution adopted in the utility model comprises valve body, valve gap, described valve gap wears regulating handle, described regulating handle front end sets gradually Regulation spring briquetting, Regulation spring, it is characterized in that: described valve body, in inner chamber between valve gap, convolution diaphragm is set, needle-valve relief valve seat is set between described convolution diaphragm and Regulation spring, described convolution diaphragm arranges valve core of needle valve, described valve core of needle valve upper end coordinates with described needle-valve relief valve seat, lower end is coordinated with Returnning spring by Returnning spring briquetting, described needle-valve relief valve seat, valve gap arranges exhaust port respectively, overflow hole.
Described needle valve reduction valve, it is characterized in that: described Regulation spring comprises the minor adjustment spring set gradually, large Regulation spring, described Regulation spring briquetting comprises convex Regulation spring briquetting, spill Regulation spring briquetting, and described minor adjustment spring, large Regulation spring upper end arrange convex Regulation spring briquetting, spill Regulation spring briquetting respectively.
Needle valve reduction valve of the present utility model, the convolution diaphragm adopted is Structural Hardware, its elasticity and tension force not temperature influence, adopts needle valve structure more stable than conventional film slice structure, therefore this reduction valve can improve spool control sensitivity under low-pressure low-temperature, improves the valve precision of voltage regulation.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is sectional view of the present utility model.
Embodiment
As shown in Figure 1, needle valve reduction valve of the present utility model, comprises valve body 13, valve gap 14, and described valve gap 14 wears regulating handle 1, and described regulating handle 1 front end sets gradually Regulation spring briquetting, Regulation spring.Described Regulation spring comprises the minor adjustment spring 2 set gradually, large Regulation spring 3, and described minor adjustment spring 2, large Regulation spring 3 upper end arrange convex Regulation spring briquetting 16, spill Regulation spring briquetting 17 respectively.In inner chamber between described valve body 13, valve gap 14, convolution diaphragm 5 is set, between described convolution diaphragm 5 and Regulation spring, needle-valve relief valve seat 4 is set, described convolution diaphragm 4 arranges valve core of needle valve 8, described valve core of needle valve 8 upper end coordinates with described needle-valve relief valve seat 4, lower end is coordinated with Returnning spring 9 by Returnning spring briquetting 15, described needle-valve relief valve seat 4, valve gap 14 is arranged respectively exhaust port 11, overflow hole 12.
Working principle is as follows:
As shown in Figure 1, the pressurized air of band certain pressure, inputted by left end A, after valve port 10 throttling, pressure exports through right-hand member place B after reducing to certain definite value.The large I of delivery pressure is regulated by minor adjustment spring 2, large Regulation spring 3.Turn clockwise regulating handle 1, and minor adjustment spring 2, large Regulation spring 3 and convolution diaphragm 5 make valve core of needle valve 8 move down, and increase valve port 10 aperture, delivery pressure is increased.If inhour rotates regulating handle 1, the aperture of valve port 10 reduces, and delivery pressure reduces thereupon.
If the instantaneous rising of incoming pressure, delivery pressure will increase, and gas enters diaphragm chamber 6 by through hole 7, and diaphragm chamber 6 internal pressure is also raised, the corresponding increase of thrust that convolution diaphragm 5 produces.This thrust destroys original equilibrium of forces, and convolution diaphragm 5 is moved up, and has small part air-flow to discharge through overflow hole 12, exhaust port 11.While diaphragm moves, because of the effect of Returnning spring 9, valve core of needle valve 8 is also moved up, turns down intake valve port 10, throttling action increases, and delivery pressure is declined, and till reaching new balance, delivery pressure gets back to substantially again original value.If the instantaneous decline of incoming pressure, delivery pressure also declines, and diaphragm 5 moves down, and valve core of needle valve 8 moves down thereupon, and intake valve port 10 is opened greatly, and throttling action reduces, and makes delivery pressure also substantially get back to original value.
Be rotated counterclockwise regulating handle 1, Regulation spring 2,3 is loosened, and the gas thrust acted on diaphragm 5 is greater than the active force of pressure adjusting spring, and diaphragm is bent upwards, by the effect close port 10 of Returnning spring.Rotate regulating handle 1 again, top and the needle-valve relief valve seat 4 of air inlet needle valve core 8 will be thrown off, and the pressurized air in diaphragm chamber 6 is just discharged through overflow hole 12, exhaust port 11, make valve be in no-output state.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., be all included within protection domain of the present utility model.
Claims (2)
1. a needle valve reduction valve, comprise valve body (13), valve gap (14), described valve gap (14) wears regulating handle (1), described regulating handle (1) front end sets gradually Regulation spring briquetting, Regulation spring, it is characterized in that: described valve body (13), convolution diaphragm (5) is set in the inner chamber between valve gap (14), needle-valve relief valve seat (4) is set between described convolution diaphragm (5) and Regulation spring, described convolution diaphragm (4) is arranged valve core of needle valve (8), described valve core of needle valve (8) upper end coordinates with described needle-valve relief valve seat (4), lower end is coordinated with Returnning spring (9) by Returnning spring briquetting (15), described needle-valve relief valve seat (4), valve gap (14) is arranged respectively exhaust port (11), overflow hole (12).
2. needle valve reduction valve according to claim 1, it is characterized in that: described Regulation spring comprises the minor adjustment spring (2) set gradually, large Regulation spring (3), described Regulation spring briquetting comprises convex Regulation spring briquetting (16), spill Regulation spring briquetting (17), and described minor adjustment spring (2), large Regulation spring (3) upper end arrange convex Regulation spring briquetting (16), spill Regulation spring briquetting (17) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420589341.2U CN204164455U (en) | 2014-10-13 | 2014-10-13 | A kind of needle valve reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420589341.2U CN204164455U (en) | 2014-10-13 | 2014-10-13 | A kind of needle valve reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164455U true CN204164455U (en) | 2015-02-18 |
Family
ID=52538143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420589341.2U Expired - Fee Related CN204164455U (en) | 2014-10-13 | 2014-10-13 | A kind of needle valve reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164455U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156701A (en) * | 2015-09-15 | 2015-12-16 | 芜湖市汽车产业技术研究院有限公司 | Pressure adjusting valve |
| CN105587910A (en) * | 2016-03-11 | 2016-05-18 | 李陶胜 | Air pressure reducing and stabilizing membrane valve |
| CN106439126A (en) * | 2016-11-03 | 2017-02-22 | 郑州郑先医药科技有限公司 | Spring type decompression overflow valve |
| CN112763127A (en) * | 2020-12-28 | 2021-05-07 | 南京沃天科技股份有限公司 | Novel pneumatic pressure transmitter |
| CN114955563A (en) * | 2022-06-30 | 2022-08-30 | 浙江汉信科技有限公司 | Loading attachment with decompression structure |
-
2014
- 2014-10-13 CN CN201420589341.2U patent/CN204164455U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156701A (en) * | 2015-09-15 | 2015-12-16 | 芜湖市汽车产业技术研究院有限公司 | Pressure adjusting valve |
| CN105587910A (en) * | 2016-03-11 | 2016-05-18 | 李陶胜 | Air pressure reducing and stabilizing membrane valve |
| CN106439126A (en) * | 2016-11-03 | 2017-02-22 | 郑州郑先医药科技有限公司 | Spring type decompression overflow valve |
| CN112763127A (en) * | 2020-12-28 | 2021-05-07 | 南京沃天科技股份有限公司 | Novel pneumatic pressure transmitter |
| CN112763127B (en) * | 2020-12-28 | 2022-09-06 | 南京沃天科技股份有限公司 | Pneumatic pressure transmitter |
| CN114955563A (en) * | 2022-06-30 | 2022-08-30 | 浙江汉信科技有限公司 | Loading attachment with decompression structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20171013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |