CN104879527A - Three-way regulating valve - Google Patents
Three-way regulating valve Download PDFInfo
- Publication number
- CN104879527A CN104879527A CN201510305640.8A CN201510305640A CN104879527A CN 104879527 A CN104879527 A CN 104879527A CN 201510305640 A CN201510305640 A CN 201510305640A CN 104879527 A CN104879527 A CN 104879527A
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- CN
- China
- Prior art keywords
- valve
- piston
- spool
- valve chamber
- gateway
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- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
Abstract
The invention discloses a three-way regulating valve which comprises a shell, a valve element, a sleeve, a valve rod and a valve seat. Hollow and vertically-distributed upper and lower valve cavities which are communicated are arranged inside the shell. The upper valve cavity is provided with a balance cylinder provided with a piston inside. The piston is integrally connected with the valve element through a connecting rod and allows the area of the lower surface of the piston to be close to or identical with that of the upper surface of the valve element. A passage communicating the lower surface of the valve element with the upper surface of the piston is arranged inside the piston, the connecting rod and the valve element and allows the area of the upper surface of the piston to be close to or identical with that of the lower surface of the valve element. A gap constantly exists between the upper surface of the piston and the shell in the moving travel. The lower end of the valve rod is connected with the piston. The three-way regulating valve has the advantages that the unbalance force borne by the valve element is small, valve operation stability is increased, and power needed for driving the executing mechanism of the valve element is reduced.
Description
Technical field
The invention belongs to valve technology field, be specifically related to a kind of three-way control valve.
Background technique
Modulating valve has another name called control valve, is in industrial automation process control field, by accepting the control signal that regulation unit exports, removes by power operation the final control unit changing the process parameters such as rate-of flow, pressure, temperature, liquid level.
Three-way control valve has three gateways to communicate with pipeline, can not only realize the break-make of pipeline, can also realize the switching of pipeline, converging valve (two enter one leads to) and diverter valve (enters two leads to) is divided into by effect, during work, a road standard-sized sheet, a road complete shut-down.
Existing three-way control valve as shown in Figure 1, comprises housing 100, valve rod 300, spool 400, sleeve 500 and two valve seats 600 etc.Housing 100 inside has the valve pocket of hollow, and valve pocket in the vertical direction is divided into uuper valve chamber 111 and lower valve chamber 112.The sidewall of the corresponding lower valve chamber 112 of housing 100 has the first gateway 101 be communicated with lower valve chamber 112; The side of the corresponding uuper valve chamber 111 of housing 100 has the second gateway 102 be communicated with uuper valve chamber 111, and the bottom of housing 100 has the 3rd gateway 103 be communicated with lower valve chamber 111.Two valve seats 600 are arranged on upper oral part and the infraoral of lower valve chamber 112 respectively, and sleeve 500 is arranged between two valve seats 600, sidepiece has the window 501 be communicated with making the first gateway 101 and sleeve 500.Spool 400 is arranged in sleeve 500, and spool about 400 respectively has a sealed department 401 that can be sealed and matched with two valve seats 600 respectively.The lower end of valve rod 300 is connected with spool 400, and upper end is stretched out outside housing 100.
Operationally, the upper and lower suffered pressure medium of spool is unequal to above-mentioned existing this three-way control valve, and unbalanced force is large, and not only operation stability is poor but also the more powerful actuator of needs drives for valve.
Summary of the invention
When technical problem to be solved by this invention is to provide a kind of work, the three-way control valve that unbalanced force suffered by spool is little, to overcome the deficiency that prior art exists.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of three-way control valve, comprise housing, spool, sleeve, valve rod and valve seat, described enclosure interior has the vertical distribution of hollow and the uuper valve chamber of connection and lower valve chamber, the sidewall of the corresponding described lower valve chamber of described housing has the first gateway be communicated with described lower valve chamber, the sidewall of the corresponding described uuper valve chamber of described housing has the second gateway be communicated with described uuper valve chamber, and described housing bottom has the 3rd gateway be communicated with described lower valve chamber; Described valve seat has two, is arranged on upper oral part and the infraoral of described lower valve chamber respectively, and described sleeve is arranged between described two valve seats, and sidepiece has the window of connection first gateway; Described spool is located in described sleeve, the upper and lower sealed department had respectively for coordinating with two described valve base sealings respectively, and the lower end of described valve rod is stretched in described uuper valve chamber, and upper end is stretched out outside housing; It is characterized in that: be positioned at described second top position, gateway in described uuper valve chamber and be provided with compensating cylinder, piston is provided with in described compensating cylinder, described piston is connected with described spool one through connecting rod, and the lower surface of described piston is close or identical with the area of the upper surface of described spool; Described piston, connecting rod and valve core inside have the passage of the upper surface being communicated to described piston from the lower surface of described spool, and the area of the upper surface of described piston is close or identical with the area of the lower surface of described spool; The upper surface of described piston has gap all the time in movement travel and between described housing; The lower end of described valve rod is connected with described piston.
In the specific embodiment of the invention, described housing is made up of valve body and the valve gap covered on valve body.
In the specific embodiment of the present invention, the lower end of described valve rod connects the center of the upper surface of described piston, described passage by the lower surface from described spool extend to internal piston long-channel, be positioned at internal piston and diameter is greater than the cavity of described long-channel diameter and forms from described cavity connects to the upper surface of described piston and around multiple through holes of described valve rod.Such structure, facilitates being linked and packed of valve rod and piston.
The balanced seal ring be positioned at below described compensating cylinder is located in gap between the inwall of described uuper valve chamber and described piston.
Described valve gap has stair-stepping valve rod hole, is provided with the stem guiding cover be enclosed within valve rod, filler, matrix liner, filler cover plate in described valve rod hole from top to bottom successively, described valve gap top is also connected with the pressing plate of compressing on described filler cover plate.
Adopt technique scheme, by arranging compensating cylinder and piston in uuper valve chamber, and piston is connected with spool one by connecting rod, inside has the passage being communicated to piston upper surface from spool lower surface, and the lower surface of piston is close or identical with the area of the upper surface of described spool, the area of the upper surface of piston is close or identical with the area of the lower surface of described spool, so no matter under what circumstances, the pressure of the assembly that spool and piston are formed suffered medium in uuper valve chamber with the valve pocket that lower valve chamber is formed is all close or identical, namely suffered unbalanced force will be very little, not only ensure that valve runs steady, and the little actuator of power can be used to drive spool.
Therefore, spool of the present invention has the little advantage of suffered medium unbalanced force, improves valve traveling comfort, reduces the required power of the actuator driving spool.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail:
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present invention.
Embodiment
As shown in Figure 2, three-way control valve of the present invention, comprises housing 100, valve rod 300, spool 400, sleeve 500 and two valve seats 600 etc.Housing 100 is made up of valve body 201 and the valve gap 202 covered on valve body 201.
Wherein, valve body 201 inside has the valve pocket of hollow, and valve pocket in the vertical direction is divided into uuper valve chamber 111 and lower valve chamber 112.The sidewall of the corresponding lower valve chamber 112 of valve body 201 has the first gateway 101 be communicated with lower valve chamber 112; The side of the corresponding uuper valve chamber 111 of valve body 201 has the second gateway be communicated with uuper valve chamber 111, and the bottom of valve body 201 has the 3rd gateway 103 be communicated with lower valve chamber 111.
Two valve seats 600 are arranged on upper oral part and the infraoral of lower valve chamber 112 respectively.Between one of them valve seat 600 and upper oral part of lower valve chamber 112, between another valve seat 600 and infraoral of lower valve chamber 112, be lined with valve seat pad 601.
Sleeve 500 is arranged between two valve seats 600, sidepiece has the window 501 that the first gateway 101 is communicated with sleeve 500 inside.Spool 400 is cylindric, has the external diameter with sleeve 500 internal diameter adaptation, is arranged in sleeve 500, can move up and down under the guiding of sleeve 500.Spool about 400 respectively has a sealed department 401 that can be respectively used to be sealed and matched with two valve seats 600.
Be positioned at the second top position, gateway 102 in uuper valve chamber 111 and be provided with compensating cylinder 700, in compensating cylinder 700, be provided with piston 800.Particularly, this compensating cylinder 700 is tubular structure, its outer circumferential face has flange 701, and the top of valve body 201 has ladder oral area 203, valve gap 202 is bolted at the top of valve body 201 and acts on the flange 701 of compensating cylinder 700, and compensating cylinder is fixed in uuper valve chamber 111.
During valve working, for preventing the leakage of medium, between valve body 201 and piston 800, gap is provided with seal ring 801, and sealing ring 801 is positioned at the below of compensating cylinder 700.
Be connected by connecting rod 802 between piston 800 with spool 400, and piston 800, connecting rod 802 and spool 400 are structure as a whole.The lower surface 803 of piston is close or identical with the area of the upper surface 402 of spool.
In addition, piston 800, connecting rod 802 and spool 400 inside have the passage 900 of the upper surface 804 being communicated to piston from the lower surface 403 of spool.Further, the area of the upper surface 804 of piston is close or identical with the area of the lower surface 403 of spool.The upper surface 804 of piston has gap all the time in movement travel and between housing 100 (i.e. the valve gap 202 at top).
The lower end of valve rod 300 is connected to the center of piston 800, then passage 900 by the lower surface 403 from spool extend to internal piston long-channel 901, be positioned at internal piston and diameter be greater than long-channel diameter cavity 902 and from cavity 902 be communicated to piston upper surface 804 and around valve rod arrange multiple through holes 903 form.Such structure, facilitates being linked and packed of valve rod and piston.
Valve gap 202 has stair-stepping valve rod hole 210.Valve rod 300 upwards passes from valve rod hole 210 in valve pocket.The stem guiding cover 211, filler 212, matrix liner 213, the filler cover plate 214 that are enclosed within valve rod 300 is provided with from top to bottom successively in valve rod hole 210.Valve gap 201 top is also connected with pressing plate 215 by bolt, and pressing plate 215 is oppressed on filler cover plate 214, and pressing plate 215 center has perforation and passes for valve rod 300.
Be exactly more than three-way control valve of the present invention, the spool of its inside has the little advantage of the unbalanced force of suffered medium in running, is in particular in:
1, when spool blocks the upper oral part of lower valve chamber, when first gateway is communicated with the 3rd gateway, this runner by spool, connecting rod and internal piston exists, all have in gap below spool, in runner and between piston and top shell and be full of medium, again because the area of the upper surface of piston is close or identical with the area of the lower surface 403 of spool.Like this, the upper surface of piston is almost identical with the pressure medium suffered by the little surface of spool, and spool is hardly by the unbalanced force of medium for this reason, at this moment opens spool and is not only very easy to, and only need just can driving of low power actuator.
2, when spool blocks the infraoral of lower valve chamber, when the first gateway is communicated with the second gateway, medium between the lower surface and the upper surface of spool of piston, and due to the area of the lower surface of piston and the upper surface of spool area close to or identical.Like this, the lower surface of piston is almost identical with the pressure medium suffered by the upper surface of spool, and spool is not almost also by the unbalanced force of medium for this reason, at this moment opens spool very easy equally, and only needs just can driving of low power actuator.
3, when spool had not both blocked the upper oral part of lower valve chamber, the infraoral of lower valve chamber is not blocked, when running in sleeve yet, this is the first gateway, the second gateway, the 3rd gateway are all communicated with valve pocket, all be full of medium, spool, connecting rod and piston are all arranged in medium, spool not by the unbalanced force of medium, operates steadily equally.
Therefore, by foregoing detailed description, can find out that the present invention has the advantage that suffered by spool, medium unbalanced force is little, improve valve traveling comfort, reduce the required power of the actuator driving spool.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention; have in any art and usually know the knowledgeable; if in the protection domain not departing from claim proposed by the invention; utilize the Equivalent embodiments that the local done by disclosed technology contents is changed or modified, and do not depart from technical characteristics content of the present invention, all still belong in the scope of the technology of the present invention feature.
Claims (5)
1. a three-way control valve, comprise housing, spool, sleeve, valve rod and valve seat, described enclosure interior has the vertical distribution of hollow and the uuper valve chamber of connection and lower valve chamber, the sidewall of the corresponding described lower valve chamber of described housing has the first gateway be communicated with described lower valve chamber, the sidewall of the corresponding described uuper valve chamber of described housing has the second gateway be communicated with described uuper valve chamber, and described housing bottom has the 3rd gateway be communicated with described lower valve chamber; Described valve seat has two, is arranged on upper oral part and the infraoral of described lower valve chamber respectively, and described sleeve is arranged between described two valve seats, and sidepiece has the window of connection first gateway; Described spool is located in described sleeve, the upper and lower sealed department had respectively for coordinating with two described valve base sealings respectively, and the lower end of described valve rod is stretched in described uuper valve chamber, and upper end is stretched out outside housing; It is characterized in that: be positioned at described second top position, gateway in described uuper valve chamber and be provided with compensating cylinder, piston is provided with in described compensating cylinder, described piston is connected with described spool one through connecting rod, and the lower surface of described piston is close or identical with the area of the upper surface of described spool; Described piston, connecting rod and valve core inside have the passage of the upper surface being communicated to described piston from the lower surface of described spool, and the area of the upper surface of described piston is close or identical with the area of the lower surface of described spool; The upper surface of described piston has gap all the time in movement travel and between described housing; The lower end of described valve rod is connected with described piston.
2. three-way control valve according to claim 1, is characterized in that: described housing is made up of valve body and the valve gap covered on valve body.
3. three-way control valve according to claim 1, it is characterized in that: the lower end of described valve rod connects the center of the upper surface of described piston, described passage by the lower surface from described spool extend to internal piston long-channel, be positioned at internal piston and diameter is greater than the cavity of described long-channel diameter and forms from described cavity connects to the upper surface of described piston and around multiple through holes of described valve rod.
4. three-way control valve according to claim 1, is characterized in that: be located at the balanced seal ring be positioned at below described compensating cylinder in the gap between described uuper valve chamber and described piston.
5. three-way control valve according to claim 2, it is characterized in that: described valve gap has stair-stepping valve rod hole, be provided with the stem guiding cover be enclosed within valve rod, filler, matrix liner, filler cover plate in described valve rod hole from top to bottom successively, described valve gap top is also connected with the pressing plate of compressing on described filler cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305640.8A CN104879527A (en) | 2015-06-04 | 2015-06-04 | Three-way regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305640.8A CN104879527A (en) | 2015-06-04 | 2015-06-04 | Three-way regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104879527A true CN104879527A (en) | 2015-09-02 |
Family
ID=53947136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510305640.8A Pending CN104879527A (en) | 2015-06-04 | 2015-06-04 | Three-way regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104879527A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644414A (en) * | 2018-06-08 | 2018-10-12 | 江西欧科思瑞工业控制阀有限公司 | Regulating valve is blocked in balanced type threeway |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771562A (en) * | 1970-06-01 | 1973-11-13 | Foxboro Co | Three way control valve |
| CN2547971Y (en) * | 2002-05-23 | 2003-04-30 | 北京市自动化系统成套工程公司 | Pressure-balance three-way regulating valve |
| CN101398096A (en) * | 2007-09-29 | 2009-04-01 | 上海阀特流体控制阀门有限公司 | Valve structure of pneumatic three-way regulating valve |
| CN201348064Y (en) * | 2008-12-21 | 2009-11-18 | 重庆川仪自动化股份有限公司 | Big diameter balanced three-way governing valve |
| CN203516830U (en) * | 2013-09-23 | 2014-04-02 | 杭州佳能阀门有限公司 | High-pressure balanced type three-way control valve |
| CN104214382A (en) * | 2014-09-01 | 2014-12-17 | 浙江智杰阀业有限公司 | Three-way control valve for high-pressure place |
| CN204704423U (en) * | 2015-06-04 | 2015-10-14 | 上海光辉仪器仪表有限公司 | Three-way control valve |
-
2015
- 2015-06-04 CN CN201510305640.8A patent/CN104879527A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771562A (en) * | 1970-06-01 | 1973-11-13 | Foxboro Co | Three way control valve |
| CN2547971Y (en) * | 2002-05-23 | 2003-04-30 | 北京市自动化系统成套工程公司 | Pressure-balance three-way regulating valve |
| CN101398096A (en) * | 2007-09-29 | 2009-04-01 | 上海阀特流体控制阀门有限公司 | Valve structure of pneumatic three-way regulating valve |
| CN201348064Y (en) * | 2008-12-21 | 2009-11-18 | 重庆川仪自动化股份有限公司 | Big diameter balanced three-way governing valve |
| CN203516830U (en) * | 2013-09-23 | 2014-04-02 | 杭州佳能阀门有限公司 | High-pressure balanced type three-way control valve |
| CN104214382A (en) * | 2014-09-01 | 2014-12-17 | 浙江智杰阀业有限公司 | Three-way control valve for high-pressure place |
| CN204704423U (en) * | 2015-06-04 | 2015-10-14 | 上海光辉仪器仪表有限公司 | Three-way control valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644414A (en) * | 2018-06-08 | 2018-10-12 | 江西欧科思瑞工业控制阀有限公司 | Regulating valve is blocked in balanced type threeway |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |