CN204704411U - A kind of regulating valve system - Google Patents
A kind of regulating valve system Download PDFInfo
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- CN204704411U CN204704411U CN201520385631.XU CN201520385631U CN204704411U CN 204704411 U CN204704411 U CN 204704411U CN 201520385631 U CN201520385631 U CN 201520385631U CN 204704411 U CN204704411 U CN 204704411U
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- valve
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- spool
- valve chamber
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Abstract
The utility model discloses a kind of regulating valve system, comprise three-way control valve and actuator, described three-way control valve comprises housing, spool, sleeve, valve rod and valve seat, and enclosure interior has the vertical distribution of hollow and the uuper valve chamber of connection and lower valve chamber; Be provided with compensating cylinder in uuper valve chamber, be provided with piston in compensating cylinder, piston to connect with described spool one through connecting rod and makes the area of the lower surface of piston and the upper surface of spool close or identical; Piston, connecting rod and valve core inside have from the lower surface of spool be communicated to the upper surface of piston passage and make the area of the area of the upper surface of piston and the lower surface of spool close to or identical, the upper surface of piston has gap all the time in movement travel and between housing; The lower end of valve rod is connected with piston.The utility model has the advantage that suffered by spool, medium unbalanced force is little, improves valve traveling comfort, reduces the required power of the actuator driving spool.
Description
Technical field
The utility model belongs to valve technology field, is specifically related to a kind of regulating valve system.
Background technique
Modulating valve has another name called control valve, 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 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 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.
Model utility content
When technical problem to be solved in the utility model is to provide a kind of work, the regulating valve system 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 utility model adopts following technological scheme:
A kind of regulating valve system, comprise three-way control valve and actuator, described three-way control valve comprises 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 and is connected with described actuator; 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 utility model embodiment, described housing is made up of valve body and the valve gap covered on valve body.
In embodiment of the present utility model, 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 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 utility model 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 utility model is described in detail:
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the structural representation of three-way control valve.
Embodiment
As shown in Figure 2, regulating valve system of the present utility model, comprises three-way control valve 10 and actuator 20.Actuator 20 is pneumatic diaphragn actuating mechanism.
As shown in Figure 3, three-way control valve 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 be communicated with making the first gateway 101 and 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 sieve, and pressing plate 215 is oppressed on filler cover plate 214, and pressing plate 215 center has perforation and passes for valve rod 300.
Again shown in composition graphs 2, the upper end of valve rod 300 is connected with actuator 20.
Regulating valve system of the present utility model adopts the three-way control valve of said structure, and the spool of three-way control valve 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 utility model 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 utility model; not any pro forma restriction is done to the utility model; have in any art and usually know the knowledgeable; if in the protection domain not departing from the claim that the utility model proposes; the Equivalent embodiments that local done by the technology contents utilizing the utility model to disclose is changed or modified, and do not depart from technical characteristics content of the present utility model, all still belong in the scope of the utility model technical characteristics.
Claims (5)
1. a regulating valve system, comprise three-way control valve and actuator, described three-way control valve comprises 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 and is connected with described actuator; 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. regulating valve system 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. regulating valve system 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. regulating valve system 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. regulating valve system 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 |
|---|---|---|---|
| CN201520385631.XU CN204704411U (en) | 2015-06-04 | 2015-06-04 | A kind of regulating valve system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520385631.XU CN204704411U (en) | 2015-06-04 | 2015-06-04 | A kind of regulating valve system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204704411U true CN204704411U (en) | 2015-10-14 |
Family
ID=54284030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520385631.XU Active CN204704411U (en) | 2015-06-04 | 2015-06-04 | A kind of regulating valve system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204704411U (en) |
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2015
- 2015-06-04 CN CN201520385631.XU patent/CN204704411U/en active Active
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| GR01 | Patent grant |