CN202091552U - Pneumatic three-way valve - Google Patents
Pneumatic three-way valve Download PDFInfo
- Publication number
- CN202091552U CN202091552U CN2011200850510U CN201120085051U CN202091552U CN 202091552 U CN202091552 U CN 202091552U CN 2011200850510 U CN2011200850510 U CN 2011200850510U CN 201120085051 U CN201120085051 U CN 201120085051U CN 202091552 U CN202091552 U CN 202091552U
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- valve
- spool
- valve body
- diameter section
- pneumatic
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Abstract
The utility model discloses a pneumatic three-way valve, which includes a valve seat and a valve core, wherein a valve body is hermetically connected to the valve seat; a through hole is arranged at the center of the valve body; the valve body is stepped shaft-shaped; the inner wall of a barrel-shaped valve cap with a mounting flange is hermetically connected with a small-diameter journal of the valve body; the lower end surface of the mounting flange of the valve cap is closely pressed against a valve body shaft shoulder and fastened with the valve seat; the valve core is stepped shaft-shaped; the big-diameter section of the valve core is hermetically connected with the inner wall of the valve cap in a mutual sliding way; the small-diameter section of the valve core penetrates the through hole at the center of the valve body and extends into the valve seat; the small-diameter section of the valve core is hermetically connected with the through hole at the center of the valve body in a mutual sliding way; a valve disk is fixedly connected onto the top end surface of the small-diameter section of the valve core; and a compression spring is arranged in the inner cavity of the valve cap. The pneumatic three-way valve has the characteristics of simple structure and long service life.
Description
Technical field
The utility model relates to a kind of valve, refers in particular to the three-way control valve that applies in the industrial piping system automation control.
Background technique
In industrial piping system automation control, being used for the automatically switch three-way valve of control of the flow direction to the pipeline medium is a kind of important device.
At present, has above-mentioned functions and the three-way valve more widely used is a Pneumatic three-way valve.This Pneumatic three-way valve is formed by the transformation of the way of common tee ball valve, its mainly by its be provided with place import and the outlet of two places valve body, it is provided with through hole and the spool that can rotate in valve body, the valve rod that is fixedly connected with spool, be fixedly connected on gear on the valve rod, the tooth bar that is meshed with gear, the cylinder that is connected with tooth bar etc. form.Its valve core through hole is connected with a valve body import and an outlet when this tee ball valve is in the normal state, and when need switch flowing to of pipeline medium, then drive the rotation of tooth bar with driving gear crop rotation several angle by cylinder, thereby just driven and the be fixedly connected rotation of valve rod of gear, and then just make with valve rod and be fixedly connected rotation that spool produces several angle closing original outlet, and valve core through hole is become with valve body import and another outlet be connected.Though this Pneumatic three-way valve by utilization cylinder and gear, rackwork can realize to MEDIA FLOW to automatic switchover control, but have the following disadvantages in actual application: used gear, rackwork because of this Pneumatic three-way valve on the one hand, then its structure just seems that relative complex has increased manufacture cost; On the other hand because of this Pneumatic three-way valve for the utilization ball valve transformation of the way forms, the Sealing that then has ball valve equally and had is fragile, working life short and maintenance, all inconvenient defective of maintenance.
The model utility content
Technical problem to be solved in the utility model provides a kind of Pneumatic three-way valve of simple in structure, long service life.
In order to solve the problems of the technologies described above, Pneumatic three-way valve of the present utility model comprises valve seat, spool, valve body is being tightly connected on the described valve seat, this valve body center position is provided with through hole, this valve body is the multidiameter shaft shape, its inwall of tubbiness valve gap that has mounting flange is tightly connected mutually with valve body minor diameter axle journal, valve gap mounting flange lower end surface is being pressed the valve body shaft shoulder and is being fastened and connected with valve seat, described spool is the multidiameter shaft shape, the spool enlarged diameter section is connected with the mutual slidable sealing of valve gap inwall, the spool reduced diameter section passes the set through hole of valve body center position and extends in valve seat, the spool reduced diameter section is connected with the mutual slidable sealing of valve body center position through hole, the valve disc that has been permanently connected on the end face of spool reduced diameter section top also is provided with pressure spring in the valve gap inner chamber.
After adopting said structure, owing to be provided with valve gap, valve body, be connected with the spool and the Returnning spring of valve disc, the spool reduced diameter section is passed the set through hole of valve body center position and be connected with the mutual slidable sealing of this through hole, the spool enlarged diameter section is connected with the mutual slidable sealing of valve gap inwall, Returnning spring is arranged in the valve gap.So just formed with the air-inlet cavity of the valve gap inner chamber between utilization spool enlarged diameter section below and the valve body as control gaseous, the valve gap inner chamber of utilization spool enlarged diameter section top is as the single-acting control cylinder of air cavity, this cylinder is when the normality position, spool is being sealed outlet under the valve seat by valve disc under the pressure spring effect, and makes valve seat import and upper outlet keep conducting; This cylinder is when work, open outlet under the valve seat by the pressure gas promotion spool that charges in the air-inlet cavity, make valve seat import and outlet conducting down, and in the slipping of valve gap bottom, the valve seat upper outlet is sealed, so just can switch the flow direction of valve seat medium easily by valve disc at spool.The utilization of above-mentioned control cylinder structure, only need just can realize switching when working on the one hand toward charged pressure gas in the air-inlet cavity to valve disc working position in valve seat, thereby the flow direction of medium has been saved original required gear ﹠ rack structure in the change valve seat, has simple and reasonable advantage; On the other hand because of having adopted the multidiameter shaft shape spool that is dynamically connected with valve gap inwall and valve body inner bore homogeneous phase sealed sliding, then increased the slide-and-guide performance of spool, it is crooked that spool can not produced when work under external force, thereby wearing and tearing have just been reduced to Sealing, increased the working life of Sealing, so also just overcome the defective that original Sealing that uses ball valve to have is fragile, working life is short, had the advantage of long service life.
A preferred implementation of the present utility model is, described valve seat is for having an import and two outlets, be the three-way control valve seat of upper outlet and following outlet, the utilization of this valve seat has adapted to the control features of single-acting control cylinder better, makes control performance more stable.
Another preferred implementation of the present utility model is, spool is provided with pointer, this pointer one end and spool are fixedly connected, the other end passes the valve gap air outlet hole and stretches out, amount of movement by the relative valve gap of this pointer, the amount of movement that can observe out spool intuitively is the open amount of valve disc, and the seal degree of valve disc and each outlet of valve seat, be convenient to the stroke of spool is control effectively, to avoid operating air pressure excessive and that spool is moved is excessive, it is bad to cause valve disc to be drawn at valve seat upper outlet place, has the advantage of long service life.
Preferably, described pressure spring is arranged between spool major diameter top and the valve gap bottom inwall.
Preferably, be provided with inlet hole on the valve gap between spool enlarged diameter section bottom and the valve body, the bottom of this valve gap is provided with air outlet hole.
Preferably, the spool enlarged diameter section that matches with valve gap is provided with the O RunddichtringO, and is provided with the O RunddichtringO in the valve hole that the spool reduced diameter section matches, and is provided with the O RunddichtringO on the valve body periphery that valve gap and valve seat match.
Description of drawings
Below in conjunction with the drawings and specific embodiments Pneumatic three-way valve of the present utility model is described further.
Fig. 1 is the work structuring schematic representation of a kind of embodiment of the utility model Pneumatic three-way valve.
Among the figure, 1-import, 2-valve seat, 3-O RunddichtringO, 4-air-inlet cavity, 5-spool, the 6-outlet chamber, 7-air outlet hole, 8-pointer, 9-valve gap, 10-pressure spring, 11-valve body, the 12-upper outlet, the 13-valve disc, the 14-screw, outlet(discharge) flange under the 15-, 16-is outlet down, the 17-inlet hole.
Embodiment
In illustrated Pneumatic three-way valve, the valve seat 2 that has import 1 and upper outlet 12, its underpart is installed with by bolt has the following outlet(discharge) flange 15 of outlet 16 down, top is connecting the valve body 11 that center position is provided with through hole and is shaped as the multidiameter shaft shape, twice O RunddichtringO 3 all is installed in valve body 11 cylindricals and the endoporus, profile is that valve body 11 endoporus pass and extension in valve seat 2 in multidiameter shaft shape spool 5 its minor diameter places, spool 11 minor diameter tops by screw 14 fixedly connected valve disc 13, spool 11 major diameter places are installed with twice O RunddichtringO 3, tubbiness valve gap 9 its mouth inner walls that have mounting flange match with valve body 11 minor diameter axle journals and are connected, its bottom interior wall is slidingly connected mutually with spool 5, valve gap 9 mounting flange lower end surfaces are being pressed valve body 11 shaft shoulders and are being fastened and connected with valve seat 2, spool 5 enlarged diameter section tops and valve gap 9 bottom inner chambers form air cavity 6, valve gap 9 bottom centre position places are provided with air outlet hole 7, valve gap 9 inner chambers between spool 5 enlarged diameter section bottoms and the valve body 11 form air-inlet cavity 4, the valve gap 9 that air-inlet cavity is 4 sections is provided with inlet hole 17, the O RunddichtringO 3 that is installed in valve body 11 cylindricals and the endoporus plays respectively valve body 11 and valve seat 2, the seal action of valve gap 9 and spool 5 connections, being installed on spool 5 O of major diameter place RunddichtringOs 3 then plays a part to seal mutually with valve gap 9, between spool 5 major diameter tops and valve gap 9 bottom inwalls pressure spring 10 is installed, this pressure spring 10 plays a part the following outlet 16 of valve is sealed voluntarily for valve disc 13 by spool 5 with active force when valve is in the normal state.When by suction port 17 in the air-inlet cavity 4 behind the feeding pressed gas, spool 5 drives valve disc 13 upwards slippages under the pressure air effect, thereby open down outlet 16 and close upper outlet 12, the switching that realization flows to the pipeline medium, this by pressurized air directly act on realization to MEDIA FLOW to the control mode of switching, not only saved the required gear ﹠ rack structure of original utilization ball valve, has simple and reasonable advantage, and become original ball valve and be stepped column valve, it is easy to wear to have overcome the existing Sealing of ball valve, the defective that working life is short, it is good to have a steering capability, the advantage of long service life.Also be fixedly connected with on spool 5 major diameter tops and pass set air outlet hole 7 and outward extending pointer 8 on the valve gap 9, the displacement amount that can observe out spool 5 intuitively by this pointer 8 is the open amount of valve disc 13, and valve disc 13 respectively exports 12,16 seal degree with valve seat 2, be convenient to the stroke of spool 5 is control effectively, to avoid operating air pressure excessive and that spool 5 is moved is excessive, it is bad to cause valve disc 13 to be drawn at valve seat 2 upper outlets 12 places, has the advantage of long service life.
Above-mentioned some preferred implementations of only enumerating the utility model Pneumatic three-way valve, but be not limited to this, under the situation of the utility model basic principle, also can do some conversion and improvement.For example, in valve body cylindrical and the through hole, and piston 7 large-diameter portions divide the O RunddichtringO of installing on the excircle all not only to be limited to twice, also can be together or multiple tracks more; The air outlet hole that is arranged on the valve gap end face also not only is limited to one, also can be many, and so on.So long as valve seat is provided with valve gap, valve body is provided with through hole, and piston is set to stepped, and Returnning spring is arranged on layout between piston and the valve gap, all is considered as falling into protection domain of the present utility model.
Claims (6)
1. Pneumatic three-way valve, comprise valve seat (2), spool (5), it is characterized in that: valve body (11) is being tightly connected on the described valve seat (2), this valve body (11) center position is provided with through hole, this valve body (11) is the multidiameter shaft shape, its inwall of tubbiness valve gap (9) that has mounting flange is tightly connected mutually with valve body (11) minor diameter axle journal, valve gap (9) mounting flange lower end surface is being pressed valve body (11) shaft shoulder and is being fastened and connected with valve seat (2), described spool (5) is the multidiameter shaft shape, spool (5) enlarged diameter section is connected with the mutual slidable sealing of valve gap (9) inwall, spool (5) reduced diameter section passes the set through hole of valve body (11) center position and extends in valve seat (2), spool (5) reduced diameter section is connected with the mutual slidable sealing of valve body (11) center position through hole, the valve disc (13) that has been permanently connected on the end face of spool (5) reduced diameter section top also is provided with pressure spring (10) in valve gap (9) inner chamber.
2. Pneumatic three-way valve according to claim 1 is characterized in that: described valve seat (2) is for having an import (1) and two outlets, i.e. the upper outlet (12) and the three-way control valve seat of outlet (16) down.
3. Pneumatic three-way valve according to claim 1 is characterized in that: described pressure spring (10) is arranged between spool (5) major diameter top and valve gap (9) the bottom inwall.
4. Pneumatic three-way valve according to claim 1 is characterized in that: the valve gap (9) between spool (5) enlarged diameter section bottom and the valve body (11) is provided with inlet hole (17), and the bottom of this valve gap (9) is provided with air outlet hole (7).
5. Pneumatic three-way valve according to claim 1, it is characterized in that: spool (5) enlarged diameter section that matches with valve gap (9) is provided with O RunddichtringO (3), with be provided with O RunddichtringO (3) in valve body (11) through hole that spool (5) reduced diameter section matches, and be provided with O RunddichtringO (3) on valve body (11) periphery that valve gap (9) and valve seat (2) match.
6. Pneumatic three-way valve according to claim 1, it is characterized in that: described spool (5) is provided with pointer (8), these pointer (8) one ends and spool (5) are fixedly connected, and the other end passes the last set air outlet hole (7) of valve gap (9) and stretches out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200850510U CN202091552U (en) | 2011-03-28 | 2011-03-28 | Pneumatic three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200850510U CN202091552U (en) | 2011-03-28 | 2011-03-28 | Pneumatic three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091552U true CN202091552U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200850510U Expired - Fee Related CN202091552U (en) | 2011-03-28 | 2011-03-28 | Pneumatic three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091552U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104354688A (en) * | 2014-11-11 | 2015-02-18 | 四川制动科技股份有限公司 | Exhaust valve |
| CN105114664A (en) * | 2015-08-21 | 2015-12-02 | 宁波市江东区青英电子科技有限公司 | Gas drive combined valve suitable for middle-high pressure difference sealing detection |
| CN106662885A (en) * | 2014-07-29 | 2017-05-10 | 韦内特公司 | Thermostatic valve having a sleeve |
| 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 |
| CN110410524A (en) * | 2019-07-31 | 2019-11-05 | 余荣芳 | A kind of triple valve convenient for detecting air-tightness |
| CN113230739A (en) * | 2021-05-17 | 2021-08-10 | 广东韶钢松山股份有限公司 | Side filtering system for reducing clamping stagnation of three-way valve |
-
2011
- 2011-03-28 CN CN2011200850510U patent/CN202091552U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662885A (en) * | 2014-07-29 | 2017-05-10 | 韦内特公司 | Thermostatic valve having a sleeve |
| CN104354688A (en) * | 2014-11-11 | 2015-02-18 | 四川制动科技股份有限公司 | Exhaust valve |
| CN105114664A (en) * | 2015-08-21 | 2015-12-02 | 宁波市江东区青英电子科技有限公司 | Gas drive combined valve suitable for middle-high pressure difference sealing detection |
| 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 |
| CN110410524A (en) * | 2019-07-31 | 2019-11-05 | 余荣芳 | A kind of triple valve convenient for detecting air-tightness |
| CN113230739A (en) * | 2021-05-17 | 2021-08-10 | 广东韶钢松山股份有限公司 | Side filtering system for reducing clamping stagnation of three-way valve |
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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: 20111228 Termination date: 20170328 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |