CN109027309B - Three-way flow distribution valve - Google Patents
Three-way flow distribution valve Download PDFInfo
- Publication number
- CN109027309B CN109027309B CN201811198204.5A CN201811198204A CN109027309B CN 109027309 B CN109027309 B CN 109027309B CN 201811198204 A CN201811198204 A CN 201811198204A CN 109027309 B CN109027309 B CN 109027309B
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- CN
- China
- Prior art keywords
- valve
- cavity
- port
- channel
- port channel
- Prior art date
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Links
- 238000012856 packing Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- 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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a three-way flow distribution valve, which comprises a valve body, a valve cover and a valve rod, wherein the valve cover is connected with the valve body and is used for closing an upper port of a cavity of the valve body; the valve body is also provided with an A port channel, a B port channel and a P port channel, the A port channel is communicated with the upper part of the cavity, the B port channel is communicated with the lower part of the cavity, the P port channel is communicated with the cavity, the valve rod passes through the valve cover to be connected with the valve core arranged in the cavity, the medium quantity entering the A port channel and the B port channel is controlled by the up-and-down movement of the valve core, and the valve cover is provided with a balance piston cavity.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a three-way flow distribution valve.
Background
When flow distribution is needed, two adjusting interlocking modes can be adopted generally, but the mode or the condition that the adjusting flow is inconsistent or the opening degree of the two valves is inconsistent cannot be adopted, so that the flow cannot be accurately adjusted.
And the general three-way flow distribution valve is smaller in general caliber and lower in pressure, and the valve can be used in a high-pressure state to cause laborious adjustment or pressure clamping.
Disclosure of Invention
In order to solve the above problems, the present invention proposes a three-way flow distribution valve.
Specifically, the three-way flow distribution valve comprises a valve body, a valve cover and a valve rod, wherein the valve cover is connected with the valve body and is used for closing the upper port of a cavity of the valve body; the valve body is also provided with an A port channel, a B port channel and a P port channel, the A port channel is communicated with the upper part of the cavity, the B port channel is communicated with the lower part of the cavity, the P port channel is communicated with the cavity, the valve rod passes through the valve cover to be connected with the valve core arranged in the cavity, and the medium quantity entering the A port channel and the B port channel is controlled by the up-and-down movement of the valve core; a balance piston cavity is arranged between the valve cover and the valve rod, an annular notch is formed in the valve rod, the valve rod is provided with a step, the step is located in the balance piston cavity, a piston sleeved on the valve rod is arranged above the step, a channel A and a channel B are arranged on the valve cover, one end of the channel A is communicated with the upper portion of the balance piston cavity, the other end of the channel A is communicated with the cavity, one end of the channel B is communicated with the lower portion of the balance piston cavity, and the other end of the channel B is communicated with the outside.
Further, a hole penetrating through the upper end face and the lower end face is formed in the valve cover, the valve rod penetrates through the hole, a filler seal is arranged at the upper port of the hole, and a sealing element is arranged at the lower port of the hole, so that a balance piston cavity is formed.
Further, the packing seal comprises a packing box, the packing box is connected with the valve cover, packing is filled in the packing box, and a packing gland for compressing the packing is connected to the packing box.
Further, a valve cage is arranged in the cavity, an opening A for communicating the cavity with the opening A is formed in the valve cage, an opening B for communicating the cavity with the opening B is formed in the valve cage, and the valve core is arranged in the valve cage.
Further, the lower part of the cavity is provided with a lower valve seat.
Further, an upper valve seat is provided at an upper portion in the cage.
Further, the valve rod is connected with the pneumatic cylinder.
The invention has the beneficial effects that: the condition of inconsistent flow regulation is avoided, and a balance mechanism is added, so that the flow can be regulated rapidly and conveniently in a high-pressure state.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1A;
FIG. 3 is an enlarged schematic view of B in FIG. 1;
FIG. 4 is an enlarged schematic view of C in FIG. 1;
in the figure, a valve body, a 2-valve cover, a 3-valve rod, a 4-cavity, a 5-A port channel, a 6-B port channel, a 7-P port channel, an 8-valve core, a 9-balance piston cavity, a 10-step, an 11-piston, a 12-channel A, a 13-channel B, a 14-stuffing box, a 15-stuffing gland, a 16-valve cage, a 17-lower valve seat, an 18-upper valve seat, a 19-sealing piece and a 20-sealing ring are shown.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, 3 and 4, the three-way flow distribution valve comprises a valve body 1, a valve cover 2, a valve rod 3 and a valve core 8, wherein a cavity 4 is arranged on the valve body 1, and the valve cover 2 is connected with the valve body 1 and is used for closing an upper port of the cavity 4; the valve body 1 is also provided with an A port channel 5, a B port channel 6 and a P port channel 7, wherein the A port channel 5 is communicated with the upper part of the cavity 4, the B port channel 6 is communicated with the lower part of the cavity 4, and the P port channel 7 is communicated with the lower port of the cavity 4. As shown in fig. 4, a lower valve seat 17 is disposed at the lower part of the cavity 4, a cage 16 is disposed in the cavity 4, the upper end surface of the valve seat 18 contacts with the lower end surface of the cage 16, and the lower end of the valve core 8 can abut against the lower valve seat 17, so as to limit the downward movement of the valve core 8. The upper portion in cage 16 is provided with upper valve seat 18, specifically, as shown in fig. 3, the inner wall of cage 16 is provided with the boss, and upper valve seat 18 installs in cage 16, and upper valve seat 18 lower terminal surface contacts with the boss, and case 8 upper end can support with upper valve seat 18, restriction case 8 moves upward. The valve cage 16 is provided with an opening A for communicating the cavity 4 with the A-port channel 5, the valve cage 16 is provided with an opening B for communicating the cavity 4 with the B-port channel 6, the valve core 8 is arranged in the valve cage 16, meanwhile, the valve rod 3 passes through the valve cover 2 and is connected with the valve core 8 through the bracket, the valve core 8 can slide up and down along the inside of the valve cage 16, the valve core 8 can control the sizes of the opening A and the opening B, and accordingly the medium quantity entering the A-port channel 5 and the B-port channel 6 is controlled, and flow regulation is realized. A sealing ring 20 is arranged between the lower valve seat 17 and the valve cage 16, and a sealing ring 20 is arranged between the upper valve seat 18 and the valve cage 16. The valve core 8 adopts a cage type structure with medium balance.
When the valve is used, the inlet flow (P port channel 7) is equal to the A port flow (A port channel 5) +B port flow (B port channel 6), and the medium quantity increased (or decreased) by the A port is equal to the medium quantity decreased (or increased) by the B port in each unit stroke of the valve core.
As shown in fig. 1 and 2, a balance piston cavity 9 is arranged between the valve cover 2 and the valve rod 3, an annular notch is formed in the valve rod 3, the valve rod 3 is provided with a step 10, the step 10 is positioned in the balance piston cavity 9, a piston 11 sleeved on the valve rod 3 is arranged above the step 10, a channel A12 and a channel B13 are arranged on the valve cover 2, one end of the channel A12 is communicated with the upper part of the balance piston cavity 9, the other end of the channel A12 is communicated with the cavity 4, one end of the channel B13 is communicated with the lower part of the balance piston cavity 9, and the other end of the channel B13 is communicated with the outside.
Specifically, the valve cover 2 is provided with a hole penetrating through the upper end face and the lower end face, the valve rod 3 is arranged in the hole in a penetrating mode, the upper port of the hole is provided with a packing seal, the lower port of the hole is provided with a sealing piece 19, a balance piston cavity 9 is formed, and machining and forming of the valve cover 2 are facilitated. The sealing element 19 is in a step shape and is connected with the valve cover 2 through a screw, and a sealing ring is arranged between the sealing element 19 and the valve rod 3.
As shown in fig. 2, the packing seal comprises a packing box 14, the packing box 14 is connected with a valve cover 2 through a screw, packing is filled in the packing box 14, a packing gland 15 for compressing the packing is connected on the packing box 14 through the screw, and a sealing ring is arranged between the packing box 14 and a valve rod 3. Further, a gap is arranged between the stuffing box 14 and the valve cover 2, the gap is communicated with the balance piston cavity 9, the channel A is vertically arranged, and one end of the channel A is communicated with the gap, so that the channel A12 is conveniently processed. The valve rod 3 is connected with a pneumatic cylinder to provide power for the movement of the valve core 8.
The working process of the invention is as follows: medium enters the valve body 1 through the P port channel 7, the valve rod 2 controls the position of the valve core 8, and the sizes of the opening A and the opening B are changed, so that the flow adjustment of the A port channel 5 and the B port channel 6 is realized, in the adjustment process, the medium can enter the balance piston cavity 9 through the channel A12, and under the action of the medium, the piston 11 is pressed on the step of the valve rod 3, so that the valve rod 3 moves downwards, and when the valve core 8 is controlled to move downwards, the flow adjustment is more convenient; when the valve core 8 moves upwards, hydraulic pressure can be applied from outside through the channel B13 to force the piston 3 to move upwards, so that the valve core 8 moves upwards more smoothly; by means of the arrangement of the balancing piston chamber 9, the phenomena of laborious adjustment and/or pressure sticking are avoided.
Claims (7)
1. The three-way flow distribution valve is characterized by comprising a valve body (1), a valve cover (2) and a valve rod (3), wherein the valve cover (2) is connected with the valve body (1) and is used for closing an upper port of a cavity (4) of the valve body (1); the valve body (1) is also provided with an A-port channel (5), a B-port channel (6) and a P-port channel (7), the A-port channel (5) is communicated with the upper part of the cavity (4), the B-port channel (6) is communicated with the lower part of the cavity (4), the P-port channel (7) is communicated with the cavity (4), the valve rod (3) passes through the valve cover (2) to be connected with a valve core (8) arranged in the cavity (4), and the medium quantity entering the A-port channel (5) and the B-port channel (6) is controlled by the up-down movement of the valve core (8); valve gap (2) and valve rod (3) between be provided with balanced piston chamber (9), open on valve rod (3) and have the ring incision, make valve rod (3) have step (10), step (10) are in balanced piston chamber (9), step (10) top is provided with piston (11) of cover locating valve rod (3), is provided with passageway A (12) and passageway B (13) on valve gap (2), passageway A (12) one end and the upper portion intercommunication in balanced piston chamber (9), passageway A (12) other end and cavity (4) intercommunication, passageway B (13) one end and the lower part intercommunication in balanced piston chamber (9), passageway B (13) other end and outside intercommunication.
2. The three-way flow distribution valve according to claim 1, wherein the valve cover (2) is provided with a hole penetrating through the upper end face and the lower end face, the valve rod (3) is arranged in the hole in a penetrating way, the upper port of the hole is provided with a packing seal, and the lower port of the hole is provided with a sealing element (19) to form a balance piston cavity (9).
3. A three-way flow distribution valve according to claim 2, wherein the packing seal comprises a packing box (14), the packing box (14) is connected with the valve cover (2), the packing box (14) is filled with packing, and a packing gland (15) for compressing the packing is connected to the packing box (14).
4. The three-way flow distribution valve according to claim 1, wherein a valve cage (16) is arranged in the cavity (4), an opening A for communicating the cavity (4) with the port A channel (5) is formed in the valve cage (16), an opening B for communicating the cavity (4) with the port B channel (6) is formed in the valve cage (16), and the valve core (8) is arranged in the valve cage (16).
5. A three-way flow distribution valve according to claim 1, characterised in that the lower part of the cavity (4) is provided with a lower valve seat (17).
6. A three-way flow distribution valve according to claim 4, characterised in that an upper valve seat (18) is provided in the upper part of the cage (16).
7. A three-way flow distribution valve according to claim 1, characterised in that the valve stem (3) is connected to a pneumatic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198204.5A CN109027309B (en) | 2018-10-15 | 2018-10-15 | Three-way flow distribution valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811198204.5A CN109027309B (en) | 2018-10-15 | 2018-10-15 | Three-way flow distribution valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109027309A CN109027309A (en) | 2018-12-18 |
| CN109027309B true CN109027309B (en) | 2023-09-12 |
Family
ID=64612961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811198204.5A Active CN109027309B (en) | 2018-10-15 | 2018-10-15 | Three-way flow distribution valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109027309B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059768B (en) * | 2022-05-24 | 2025-07-01 | 中车制动系统有限公司 | Flow adjustable air control valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329169A (en) * | 1965-04-19 | 1967-07-04 | Commercial Shearing | Hydraulic valves |
| JPS63297875A (en) * | 1987-05-29 | 1988-12-05 | Nachi Fujikoshi Corp | Three-way fluid control valve |
| CN2584969Y (en) * | 2002-11-22 | 2003-11-05 | 宁波法兰特阀门有限公司 | Balance stop 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 |
| CN101737503A (en) * | 2009-12-14 | 2010-06-16 | 浙江大学 | Self-balancing stop valve with piston type valve core and hidden rod |
| CN202182222U (en) * | 2011-07-28 | 2012-04-04 | 杭州良工阀门有限公司 | Piston type balance type self-operated pressure regulating valve |
| CN204004722U (en) * | 2014-08-19 | 2014-12-10 | 重庆川武仪表有限公司 | Balance cage type single seat regulating valve |
| CN209041643U (en) * | 2018-10-15 | 2019-06-28 | 成都华科阀门制造有限公司 | A kind of motor three-way flow distributing valve |
-
2018
- 2018-10-15 CN CN201811198204.5A patent/CN109027309B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3329169A (en) * | 1965-04-19 | 1967-07-04 | Commercial Shearing | Hydraulic valves |
| JPS63297875A (en) * | 1987-05-29 | 1988-12-05 | Nachi Fujikoshi Corp | Three-way fluid control valve |
| CN2584969Y (en) * | 2002-11-22 | 2003-11-05 | 宁波法兰特阀门有限公司 | Balance stop 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 |
| CN101737503A (en) * | 2009-12-14 | 2010-06-16 | 浙江大学 | Self-balancing stop valve with piston type valve core and hidden rod |
| CN202182222U (en) * | 2011-07-28 | 2012-04-04 | 杭州良工阀门有限公司 | Piston type balance type self-operated pressure regulating valve |
| CN204004722U (en) * | 2014-08-19 | 2014-12-10 | 重庆川武仪表有限公司 | Balance cage type single seat regulating valve |
| CN209041643U (en) * | 2018-10-15 | 2019-06-28 | 成都华科阀门制造有限公司 | A kind of motor three-way flow distributing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109027309A (en) | 2018-12-18 |
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