CN203516830U - High-pressure balanced type three-way control valve - Google Patents
High-pressure balanced type three-way control valve Download PDFInfo
- Publication number
- CN203516830U CN203516830U CN201320597366.2U CN201320597366U CN203516830U CN 203516830 U CN203516830 U CN 203516830U CN 201320597366 U CN201320597366 U CN 201320597366U CN 203516830 U CN203516830 U CN 203516830U
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- valve
- cage cover
- way control
- valve body
- control valve
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Abstract
The utility model relates to an adjusting valve, and discloses a three-way flow splitting and converging high-pressure balanced type three-way control valve which is automatically controlled and is large in caliber and pressure. The high pressure balanced type three-way control valve comprises a valve body, a valve cover, a valve rod and a valve core which is connected and fixed with the valve rod. A first flow pass opening, a second flow pass opening and a third flow pass opening are formed in a valve body inner cavity, the valve body inner cavity is further provided with an upper cage cover and a lower cage cover, a balanced sealing ring is arranged between the upper cage cover and the lower cage cover, a valve element is placed in the upper cage cover and the lower cage cover, the outer wall of the valve core is in close contact with the balanced sealing ring, a stuffing box is arranged between the valve cover and the valve rod, and a flange connecting tube is connected to the lower portion of the valve body. According to the high-pressure balanced type three-way control valve, unbalanced force generated by media on the valve element is removed, the capacity of being resistant to the medium unbalanced force of the valve is improved, the output force of the output mechanism can be greatly lowered, an adjusting window is arranged on each cage cover, the accuracy of flow adjusting is guaranteed, the strength of the valve element is enhanced at the same time, the entire machine leakage level is improved, and it is guaranteed that the three-way control valve can work stably under various work conditions of large calibers and high differential pressure.
Description
Technical field
The utility model relates to a kind of modulating valve, the high-pressure balancing type three-way control valve of especially a kind of distributing T-pipe that is applicable to automatically control heavy caliber, high pressure, interflow occasion.
Background technique
Three-way control valve is the important a member in modulating valve, increase along with tooling, the three-way control valve utilization rate of heavy caliber, mesohigh increases day by day, three-way control valve in the market all adopts uneven formula valve core structure, exist unbalanced force large, move unstable, shake the problems such as large, have a strong impact on the normal use of valve, cannot meet growing automatic demand for control.
Summary of the invention
The shortcoming that the utility model is used for three-way control valve in prior art, has designed a kind of high-pressure balancing type three-way control valve.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
High-pressure balancing type three-way control valve, comprise valve body, valve gap, valve rod and the spool being connected and fixed with valve rod, body cavity is provided with first-class road junction, second road junction the 3rd runner mouth, body cavity is also provided with upper cage cover and the lower cage cover of straight cylinder type, upper cage cover and lower cage inner room are provided with balanced seal ring, spool is placed in cage cover and lower cage cover, spool outer wall and balanced seal ring close contact.
As preferably, body cavity is provided with first-class road junction, second road junction the 3rd runner mouth.Be suitable for a kind of fluid to be divided into two tunnels outflows or two kinds of fluids to be merged into a kind of operating mode of fluid through three-way valve by three-way valve.
As preferably, body cavity is also provided with upper cage cover and the lower cage cover of straight cylinder type, and upper cage cover and lower cage inner room are provided with balanced seal ring, and spool is placed in cage cover and lower cage cover, spool outer wall and balanced seal ring close contact.Adopt cylindrical shape spool guiding, spool connects the lower end of valve rod, be placed in cage cover and lower cage cover on the interior straight cylinder type of valve, upper cage cover and lower cage inner room are provided with balanced seal ring, the outer wall of spool and the sealing of balanced seal ring, eliminate the unbalanced force that medium produces on spool, valve rod band movable valve plug moves up and down in cage cover, when spool moves up, left side flow increases, and right side flow reduces, otherwise, when spool moves down, left side flow reduces, right side flow increases, can be steadily, flow-rate ratio or the switching direction of accurate adjusting automatically two streams.
As preferably, between valve gap and valve rod, be provided with stuffing box, stuffing box comprises Packing seat and the spacer of filler, filler below.Filler has good sealing and compared with friction coefficient, prevents medium leakage, and filler below is provided with Packing seat and plays the effect of supporting filler.
As preferably, filler is V-type polytetrafluoroethylene packing, or the combined packing consisting of moulding graphite annulus, teflon asbestos packing, graphite asbestos packing, and Packing seat is teflon or fabricated metals Packing seat, and spacer is teflon spacer.Teflon has minimum friction factor and excellent self lubricity, it is a kind of good sealing material, combined packing can reinforcing filler intensity and lubricity, extend the working life of filler, filler pressure pad plays the effect of supporting filler, filler can be used under higher pressure, and filler is cracky not, extends modulating valve filler working life.
As preferably, above stuffing box, be provided with filler nail pressing and pressing plate.Filler nail pressing and pressing plate compress filler, guarantee its sealing, extend filler working life.
As preferably, valve gap and valve body are connected and fixed by the first stud and the first nut, and valve gap and valve body and upper cage cover joint are provided with valve bonnet seal circle.Strengthen sealing.
As preferably, lower cage cover is provided with cage cover seal ring with valve body joint.
As preferably, below valve body, be connected with flange connecting pipe, flange connecting pipe and valve body are connected and fixed by the second stud and the second nut.
As preferably, the joint of valve body and flange connecting pipe is provided with seal ring.
According to the technical solution of the utility model, high-pressure balancing type three-way control valve, comprise valve body, valve gap, valve rod and the spool being connected and fixed with valve rod, body cavity is provided with first-class road junction, second road junction the 3rd runner mouth, body cavity is also provided with upper cage cover and the lower cage cover of straight cylinder type, upper cage cover and lower cage inner room are provided with balanced seal ring, and spool is placed in cage cover and lower cage cover, spool outer wall and balanced seal ring close contact.The utility model body cavity is provided with first-class road junction, second road junction the 3rd runner mouth, be suitable for a kind of fluid to be divided into two tunnels outflows or two kinds of fluids to be merged into a kind of operating mode of fluid through three-way valve by three-way valve, body cavity is also provided with upper cage cover and the lower cage cover of straight cylinder type, upper cage cover and lower cage inner room are provided with balanced seal ring, spool is placed in cage cover, spool outer wall and balanced seal ring close contact, eliminate the unbalanced force that medium produces on spool, valve rod band movable valve plug moves up and down in cage cover, when spool moves up, left side flow increases, right side flow reduces, otherwise, when spool moves down, left side flow reduces, right side flow increases, can be steady, accurate flow-rate ratio or the switching direction that automatically regulates two streams, the utility model, eliminated the unbalanced force that medium produces on spool, improve the uneven ability of the anti-medium of valve, can greatly reduce the ouput force of output mechanism, cage puts adjusting window is set, guaranteed the accuracy of Flow-rate adjustment, strengthened the intensity of spool simultaneously, improve complete machine and revealed grade, guarantee that three-way control valve can be at various heavy calibers, smooth working under High Pressure Difference operating mode.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of stuffing box in Fig. 1.
The toponym that in accompanying drawing, each number designation refers to is as follows: 1-flange connecting pipe, the 2-the second stud, the 3-the second nut, 4-seal ring, 5-cage cover seal ring, 6-lower cage cover, 7-balanced seal ring, 8-spool, 9-upper cage cover, 10-valve bonnet seal circle, 11-valve rod, the 12-the first stud, the 13-the first nut, 14-valve gap, 15-Packing seat, 16-spacer, 17-filler, 18-filler nail pressing, 19-pressing plate, 20-first-class road junction, 21-second road junction, the 22-the three runner mouth, 23-valve body, 24-stuffing box.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
Embodiment 1
High-pressure balancing type three-way control valve, as shown in Figure 1, comprise valve body 23, valve gap 14, valve rod 11 and the spool 8 being connected and fixed with valve rod 11, valve body 23 inner chambers are provided with first-class road junction 20, second road junction 21 the 3rd runner mouth 22, valve body 23 inner chambers are also provided with upper cage cover 9 and the lower cage cover 6 of straight cylinder type, upper cage cover 9 and 6, lower cage cover are provided with balanced seal ring 7, spool 8 is placed in cage cover 9 and lower cage cover, spool 8 outer walls and balanced seal ring 7 close contacts, between valve gap 14 and valve rod 11, be provided with stuffing box 24, stuffing box 24 comprises filler 17, the Packing seat 15 of filler 17 belows and spacer 16, stuffing box 24 tops are provided with filler nail pressing 18 and pressing plate 19, valve gap 14 is connected and fixed by the first stud 12 and the first nut 13 with valve body 23, valve gap 14 overlaps 9 joints with valve body 1 and upper cage and is provided with valve bonnet seal circle 10, lower cage cover 6 is provided with cage cover seal ring 5 with valve body 23 joints, valve body 23 belows are connected with flange connecting pipe 1, flange connecting pipe 1 is connected and fixed by the second stud 2 and the second nut 3 with valve body 23, valve body 23 is provided with seal ring 4 with the joint of flange connecting pipe 1.
Working procedure: spool 14 is fixed on the lower end of valve rod 11, valve rod 11 upper ends are stretched out valve gap 14 and are connected with actuator shaft, and along with the action of actuator, valve rod 11 moves up and down in the upper cage cover 9 of straight cylinder type and lower cage cover 6 with movable valve plug 14, when spool 14 moves up, left side flow increases, right side flow reduces, otherwise, when spool 15 moves down, left side flow reduces, right side flow increases, thus steady, accurate flow-rate ratio or the switching direction that automatically regulates two streams.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (8)
1. high-pressure balancing type three-way control valve, comprise valve body (23), valve gap (14), valve rod (11) and the spool (8) being connected and fixed with valve rod (11), valve body (23) inner chamber is provided with first-class road junction (20), second road junction (21) the 3rd runner mouth (22), it is characterized in that: valve body (23) inner chamber is also provided with upper cage cover (9) and the lower cage cover (6) of straight cylinder type, between upper cage cover (9) and lower cage cover (6), be provided with balanced seal ring (7), spool (8) is placed in cage cover (9) and lower cage cover (6), spool (8) outer wall and balanced seal ring (7) close contact.
2. high-pressure balancing type three-way control valve according to claim 1, it is characterized in that: between valve gap (14) and valve rod (11), be provided with stuffing box (24), stuffing box (24) comprises Packing seat (15) and the spacer (16) of filler (17), filler (17) below.
3. high-pressure balancing type three-way control valve according to claim 2, it is characterized in that: filler (17) is V-type polytetrafluoroethylene packing, or the combined packing being formed by moulding graphite annulus, teflon asbestos packing, graphite asbestos packing, Packing seat (15) is teflon or fabricated metals Packing seat, and spacer (16) is teflon spacer.
4. high-pressure balancing type three-way control valve according to claim 2, is characterized in that: stuffing box (24) top is provided with filler nail pressing (18) and pressing plate (19).
5. high-pressure balancing type three-way control valve according to claim 1, it is characterized in that: valve gap (14) is connected and fixed by the first stud (12) and the first nut (13) with valve body (23), valve gap (14) is provided with valve bonnet seal circle (10) with valve body (1) and upper cage cover (9) joint.
6. high-pressure balancing type three-way control valve according to claim 1, is characterized in that: lower cage cover (6) is provided with cage cover seal ring (5) with valve body (23) joint.
7. high-pressure balancing type three-way control valve according to claim 1, is characterized in that: valve body (23) below is connected with flange connecting pipe (1), and flange connecting pipe (1) is connected and fixed by the second stud (2) and the second nut (3) with valve body (23).
8. high-pressure balancing type three-way control valve according to claim 7, is characterized in that: valve body (23) is provided with seal ring (4) with the joint of flange connecting pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597366.2U CN203516830U (en) | 2013-09-23 | 2013-09-23 | High-pressure balanced type three-way control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597366.2U CN203516830U (en) | 2013-09-23 | 2013-09-23 | High-pressure balanced type three-way control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516830U true CN203516830U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320597366.2U Expired - Fee Related CN203516830U (en) | 2013-09-23 | 2013-09-23 | High-pressure balanced type three-way control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516830U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879527A (en) * | 2015-06-04 | 2015-09-02 | 上海光辉仪器仪表有限公司 | Three-way regulating valve |
| 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 |
-
2013
- 2013-09-23 CN CN201320597366.2U patent/CN203516830U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879527A (en) * | 2015-06-04 | 2015-09-02 | 上海光辉仪器仪表有限公司 | Three-way regulating valve |
| 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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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: 20140402 Termination date: 20190923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |