CN2151319Y - Conversely impact pneumatic valve - Google Patents
Conversely impact pneumatic valve Download PDFInfo
- Publication number
- CN2151319Y CN2151319Y CN 93230379 CN93230379U CN2151319Y CN 2151319 Y CN2151319 Y CN 2151319Y CN 93230379 CN93230379 CN 93230379 CN 93230379 U CN93230379 U CN 93230379U CN 2151319 Y CN2151319 Y CN 2151319Y
- Authority
- CN
- China
- Prior art keywords
- valve
- diaphragm
- spool
- seat
- valve core
- 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
Links
Images
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a valve for automatic control. The valve for automatic control is a conversely impact type pneumatic valve which is driven by compressed air. The anti-structure of a normal pneumatic valve is adopted by the valve for automatic control, i.e.a film sheet is positioned on the top of a film sheet seat, and a valve core and a valve core seat are positioned inside a medium material feeding cavity inside a valve body. When the pressure of a medium exceeds a specified pressure, the sealed performance of the valve core and the valve core seat is better, and thus, the defect of the normal pneumatic valve is overcome. The utility model has the advantages of simple structure, convenient operation, high reliability, long service life, and convenient manufacture and maintenance.
Description
The utility model discloses a kind of automatic control valve, is the backflushing type pneumatic valve by compressed air-driven.
Production at present and the diaphragm type pneumatic valve that uses, its structure and working principle are roughly the same, it is the top that pressure spring is positioned at diaphragm seat and diaphragm, valve rod one end and diaphragm seat, diaphragm are fixed as one, the valve rod the other end is equipped with spool, under the effect of pressure spring, the valve core case sealing on spool and the valve body contacts, and spool and valve core case are positioned at the discharging chamber of valve body.When need were opened valve, pressurized air entered air chamber, acted on the diaphragm, promote to move on the diaphragm seat by diaphragm, and make spool separate valve open with valve core case, medium by the gap between spool and valve core case, enters the discharging chamber to outlet then by feed cavity in the valve body.When the needs throttle down, pressurized air stops air feed, and diaphragm seat and diaphragm promote the valve rod spool and move down under the effect of pressure spring, and spool is contacted with the valve core case sealing.The pneumatic valve of this structure, in use have the following disadvantages, the first, this pneumatic valve sealing is unreliable, and this valve all has a maximum pressure medium that can seal when design, it is design pressure, when the pressure of medium surpassed the design pressure of regulation, then the active force that acts on the spool of medium reached the counter-force that is enough to overcome pressure spring, then promotes to move on the spool, medium then by entering the discharging chamber in the space to outlet, makes the valve seal failure.The second, diaphragm is changed trouble, and working life is short.Because diaphragm is installed in diaphragm seat bottom, valve rod passes diaphragm, is fixed as one with diaphragm seat and diaphragm, and diaphragm is provided with the hole during fabrication, must earlier the diaphragm seat be taken off when changing diaphragm simultaneously, makes when keeping in repair than trouble.
The purpose of this utility model is to provide a kind of backflushing type pneumatic valve, and reliable operation is not subjected to the variation of pressure medium and influences the stability of work, makes simply, easy to maintenance, prolongs working life of diaphragm.
In order to achieve the above object, the utility model has adopted following technical measures:
The backflushing type pneumatic valve, be grouped into by air chamber part and valve body, the centre is connected as a single entity through connecting sleeve, diaphragm is housed in the air chamber, the diaphragm seat, valve rod and pressure spring, valve rod one end is connected with the diaphragm seat, the other end is equipped with spool, spool is positioned at valve body, and spool and valve core case are divided into feed cavity and discharging chamber with valve body, and its difference diaphragm 3 is positioned at the top of diaphragm seat 4, corresponding with compressed air inlet port 1 set on the air chamber cover, pressure spring 5 is equipped with in diaphragm seat 4 bottoms, and valve rod 7 upper ends are connected with diaphragm seat 4, and valve rod 7 is contained in air chamber and the valve body connecting sleeve, valve rod 7 lower end fixed spools 11, spool 11 is positioned at valve body feed cavity 12 with valve core case 10.
Above mentioned spool 11, seal face contacts throttle down with the lower end surface sealing of valve core case on it.
In order to further specify characteristics of the present utility model, described below in conjunction with accompanying drawing:
Fig. 1 backflushing type pneumatic valve configurations schematic representation;
Among the figure: 10 valve core cases, 11 spools, 12 feed cavity, 13 body caps of 1 compressed air inlet port, 2 air chambers, 3 diaphragms, 4 diaphragm seats, 5 pressure springs, 6 connecting sleeves, 7 valve rods, 8 valve bodies, 9 discharging chambeies.
The course of work of the present utility model as shown in drawings. Be illustrated as the situation of this pneumatic operated valve closed condition, in the air chamber of this valve, compression spring is in its pre-compressed state, it is used in the preact masterpiece on the diaphragm seat, and the diaphragm seat is upwards drawn, and the diaphragm seat is passed to spool with the power that makes progress by valve rod, make the upper surface of spool be close to the lower surface of valve core case, the sealing contact, medium can not pass through, thereby valve is closed. When needs are opened valve, the compressed air of certain pressure is entered in the air chamber by air inlet of air chamber, compressed gas acts on the diaphragm, make diaphragm produce downward thrust, when thrust during even as big as the counter-force that overcomes spring and other resistance sum then the diaphragm seat be pushed down, band valve rod and spool move down, spool is separated with valve core case, valve open, medium then by the space of feed cavity between spool and valve core case, advance Enter the discharging chamber to outlet. When the compressed air in the air chamber released, Compress Spring made again on the diaphragm seat and moves, and the pulling spool is adjacent on valve core case, and valve is namely closed.
The utility model has following advantage compared with the prior art:
1, reliable operation
Spool of the present utility model and valve core case are positioned at feed cavity, and when pressure medium surpassed authorized pressure, the thrust that medium acts on the spool was more big, and it is more reliable that spool and valve core case seal, and sealability is just more good.
Spool and valve core case are positioned at the discharging chamber in the prior art, when pressure medium surpasses design pressure, just can back down spool, make seal failure.
2, manufacturing, easy to maintenance
Diaphragm of the present utility model is positioned at the top of diaphragm seat, replacing, easy for installation.
In the prior art, diaphragm is positioned at the bottom of diaphragm seat, changes trouble is installed.
3, long service life
Diaphragm of the present utility model is an integrated type, is placed on diaphragm seat top, convenient processing and manufacture, long service life.
The diaphragm of prior art is placed on diaphragm seat bottom, and valve rod passes with the diaphragm seat and is connected, thereby must be provided with machining hole on the diaphragm, makes complexity, reduces the intensity of diaphragm simultaneously, and working life is short.
Embodiment:
But adopt the valve of the principle design specification of backflushing type pneumatic valve, following mask body is introduced three kinds:
Embodiment 1:
Air chamber structure is an aluminum casting, and valve body is a copper casting, and connection mouth is that pipe thread connects, and is fit in the pipe-line system of medium and small caliber and lower pressure.
Embodiment 2:
Air chamber is stamped to form by steel plate, and diaphragm is a flat garden diaphragm, is fit in enormous quantities the manufacturing.
Embodiment 3:
Valve body adopts stainless cast steel part, and the flanged dish of connection mouth uses in the pipe-line system of suitable big caliber and elevated pressures.
Claims (2)
1, a kind of backflushing type pneumatic valve, be grouped into by air chamber part and valve body, the centre is connected as a single entity through connecting sleeve 6, diaphragm 3 is housed in the air chamber 2, diaphragm seat 4, valve rod 7 and pressure spring 5, valve rod one end is connected with the diaphragm seat, the other end is equipped with spool 11, spool is positioned at valve body 8, spool 11 is divided into feed cavity 12 and discharging chamber 9 with valve core case 10 with valve body, it is characterized in that diaphragm 3 is positioned at the top of diaphragm seat 4, corresponding with compressed air inlet port 1 set on the air chamber cover, pressure spring 5 is equipped with in diaphragm seat 4 bottoms, and valve rod 7 upper ends are connected with diaphragm seat 4, and valve rod 7 is contained in air chamber and the valve body connecting sleeve, valve rod 7 lower end fixed spools 11, spool 11 is positioned at valve body feed cavity 12 with valve core case 10.
2, backflushing type pneumatic valve according to claim 1 is characterized in that the last seal face of spool contacts with the lower end surface sealing of valve seat.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93230379 CN2151319Y (en) | 1993-03-09 | 1993-03-09 | Conversely impact pneumatic valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 93230379 CN2151319Y (en) | 1993-03-09 | 1993-03-09 | Conversely impact pneumatic valve |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2151319Y true CN2151319Y (en) | 1993-12-29 |
Family
ID=33807050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 93230379 Expired - Fee Related CN2151319Y (en) | 1993-03-09 | 1993-03-09 | Conversely impact pneumatic valve |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2151319Y (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101451561A (en) * | 2007-12-06 | 2009-06-10 | Abb股份公司 | Method for commissioning actuators |
CN101975287A (en) * | 2010-10-15 | 2011-02-16 | 吴相民 | Differential pressure type automatic reversing valve |
CN106402403A (en) * | 2016-10-24 | 2017-02-15 | 周末 | Engineering valve |
CN108758000A (en) * | 2018-05-25 | 2018-11-06 | 南通博俊环保科技有限公司 | A kind of Waterpower hydraulic pressure triple valve |
-
1993
- 1993-03-09 CN CN 93230379 patent/CN2151319Y/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101451561A (en) * | 2007-12-06 | 2009-06-10 | Abb股份公司 | Method for commissioning actuators |
CN101451561B (en) * | 2007-12-06 | 2013-06-05 | Abb股份公司 | Method for commissioning actuators |
CN101975287A (en) * | 2010-10-15 | 2011-02-16 | 吴相民 | Differential pressure type automatic reversing valve |
CN106402403A (en) * | 2016-10-24 | 2017-02-15 | 周末 | Engineering valve |
CN108758000A (en) * | 2018-05-25 | 2018-11-06 | 南通博俊环保科技有限公司 | A kind of Waterpower hydraulic pressure triple valve |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1143068C (en) | Valve for dust-collector | |
CN201391607Y (en) | Cage type back-pressure pilot-operated control valve | |
CN2151319Y (en) | Conversely impact pneumatic valve | |
CN110792816A (en) | Novel integrated multifunctional pressure reducing valve | |
CN1098431C (en) | leakless safety valve | |
CN214063911U (en) | Novel durable back pressure valve | |
CN2056718U (en) | Plastic diaphragm control valve for diaphragm cylinder | |
CN2856609Y (en) | Cut-off valve with sylphone seal structure | |
CN211738048U (en) | Quick-repair type flushing-free double-core stop valve convenient to replace | |
CN2797264Y (en) | Slid valve type air cannon | |
CN2570544Y (en) | Gas-liquid cylinder sealing arrangement | |
CN215980830U (en) | Coaxial pneumatic control filling valve | |
CN212717091U (en) | Unloading one-way valve of air compressor | |
CN218883018U (en) | Pressure plate of regulating valve | |
CN217815198U (en) | Overflow cut-off gas pressure regulating valve | |
CN212838214U (en) | Novel pneumatic pump combination device | |
CN217081565U (en) | Pressure reducing valve | |
CN2596036Y (en) | High pressure shutoff valve used for gas combustion | |
CN220488427U (en) | Piston type regulating valve | |
CN87202979U (en) | Branch flow controlling membrane valve | |
CN215633680U (en) | Servo valve structure | |
CN214304636U (en) | Hydraulic press hydro-cylinder with mechanism trades oil | |
CN220645994U (en) | Mounting structure of plate type two-way lock | |
CN220910549U (en) | Multifunctional two-group valve structure based on low cost | |
CN114148937B (en) | Novel hydraulic cylinder |
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 |