CN207893233U - A kind of balancing throttle valve - Google Patents
A kind of balancing throttle valve Download PDFInfo
- Publication number
- CN207893233U CN207893233U CN201820109098.8U CN201820109098U CN207893233U CN 207893233 U CN207893233 U CN 207893233U CN 201820109098 U CN201820109098 U CN 201820109098U CN 207893233 U CN207893233 U CN 207893233U
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- Prior art keywords
- valve
- piston
- bushing
- upper piston
- sealing ring
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Abstract
The utility model discloses a kind of balancing throttle valves, it is characterized in that：The utility model is made of handle, valve rod, valve stem nut, valve body, valve deck, bushing, upper piston, lower piston, bushing is housed in valve body, upper piston is housed in bushing top, upper piston lower part is equipped with lower piston, upper piston, bushing, valve deck, valve rod form counter balance pocket, balance hole is equipped in upper piston, balance hole is penetrated through with counter balance pocket.The utility model is characterized in that：Balancing throttle valve is equipped with balance mechanism, and controlled valve is flexible.Valve medium not erosion sealing surface when adjusting flow.Valve seal performance is good, and service life is long.On pipeline suitable for oil, chemical industry and other industry pumped (conveying) medium, plays cut-off, adjusts flow use.
Description
Technical field
The utility model provides a kind of suitable for the industries pumped (conveying) medium pipeline valves such as oil, chemical industry, cut-off, adjusting
Flow is used.
Technical background
Currently, domestic shut-off valve, adjusting flow valve are generally by major parts such as valve body, valve deck, valve rod, valve seat, flaps
Composition, seal form have plane, conical surface etc..Its disadvantage is valve seal and adjusting flow position is that the same position is come
It realizes, valve seat is in close contact with the sealing surface on flap and realizes sealing when closing valve.When valve opening adjusts flow, high pressure is situated between
Matter gap between two sealing surfaces of valve seat and flap is flowed out, and realizes the adjusting of flow.The direct erosion sealing surface of high-pressure medium, it is close
Cover easily damages, and valve seal performance is caused to fail.Second is that valve does not have design pressure balance mechanism, opening/shutting valve to want mostly
Overcome thrust of the high-pressure medium to flap, valve switch very difficult.
Invention content
It is the same position the purpose of the utility model is to overcome valve seal in the prior art and adjusting flow position
It realizes, when adjusting flow, the direct erosion sealing surface of high-pressure medium, sealing surface easily damage, valve seal performance is poor, use
The very difficult deficiency of short life, valve switch provides a kind of balancing throttle valve.
The utility model solve technical problem the technical solution adopted is that：The utility model is by handle, valve rod, valve rod spiral shell
Mother, valve body, valve deck, bushing, upper piston, lower piston composition, it is characterized in that：Bushing is housed in valve body, is equipped in bushing top upper
Piston, lower part are equipped with lower piston, and upper piston, bushing, valve deck, valve rod form counter balance pocket, balance hole, balance hole are equipped in upper piston
It is penetrated through with counter balance pocket.
Bushing is equipped with water outlet, and the water outlet lower interior portion of bushing is equipped with sealing ring, is equipped with outside upper piston upper end close
Seal, sealing ring are matched with sleeve inner surface.
Bushing inner cavity lower part is equipped with step, and lower piston lower end is equipped with step, and lower piston lower part is equipped with sealing ring,
Middle part is equipped with sealing ring on lower piston, and lower piston is equipped with medium flow field through-hole.
The utility model has the advantages that：Valve mechanism is simple, switch is flexible, and medium does not wash away sealing surface, valve tightness
Energy is good, service life is long.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the main sectional view of the utility model embodiment.
In Fig. 1,1 handle, 2 valve stem nuts, 3 valve decks, 4 valve rods, 5 bushings, 6 valve bodies, 7 first sealing rings, 8 upper pistons, 9
Two sealing rings, 10 lower pistons, 11 third sealing rings, 12 the 4th sealing rings, A water outlets, B upper pistons and lower piston contact surface, C
Bushing step, D lower pistons lower end step, E lower piston medium flow fields through-hole, F balance holes, G counter balance pockets.
Specific implementation mode
In Fig. 1, a kind of balancing throttle valve by handle (1), valve rod (4), valve stem nut (2), valve body (6), valve deck (3),
Bushing (5), upper piston (8), lower piston (10) composition, valve body (6) is interior to be equipped with bushing (5), and upper piston is housed in bushing (5) top
(8), upper piston (8) lower part is equipped with lower piston (10), upper piston (8), bushing (5), valve deck (3), valve rod (4) Compositional balance chamber
(G), balance hole (F) is equipped in upper piston (8), balance hole (F) is penetrated through with counter balance pocket (G).Bushing (5) is equipped with water outlet
(A), water outlet (A) lower interior portion of bushing (5) is equipped with the second sealing ring (9), is sealed equipped with first outside upper piston (8) upper end
It encloses (7), the first sealing ring (7) is matched with bushing (5) inner surface.Bushing (5) inner cavity lower part is equipped with step (C), lower piston
(10) lower end is equipped with step (D), step (C) limited step (D), and lower piston (10) lower part is equipped with the 4th sealing ring (12), lower work
It fills in middle part on (10) and third sealing ring (11) is housed, lower piston (10) is equipped with medium flow field through-hole (E).
A kind of pressure balance mechanism of balancing throttle valve be by upper piston (8), bushing (5), valve deck (3), valve rod (4),
Balance hole (F) Compositional balance chamber (G) on upper piston (8).When medium flow field is in valve inlet, medium passes through on upper piston (8)
Balance hole (F) reach counter balance pocket (G), upper piston (8) upper and lower ends are of substantially equal by the pressure of medium, and open and close valve is only
Overcome resistance, opening/shutting valve very flexible.
A kind of sealing mechanism of balancing throttle valve is made of bushing (5), upper piston (8), the second sealing ring (9), when
After valve completely closes, the second sealing ring (9) on upper piston (8) lower end cylindrical surface and bushing (5) is mutually fitted close, and is formed
Valve seal pair, has blocked the circulation of medium, valve is closed.
A kind of adjusting flow mechanism that exempting from balancing throttle valve is by bushing (5), upper piston (8), lower piston (10),
Three sealing rings (11), the 4th sealing ring (12), water outlet (A) and the second sealing ring (9) composition.When Open valve, valve rod
(4) upper piston (8) is driven to move up, since lower piston (10) lower end is equipped with step (D), lower piston (10) lower end is by medium
Pressure be more than lower piston (10) upper end by pressure medium, lower piston (10) under pressure medium thrust it is synchronous with upper piston (8) to
Upper movement, the contact surface (B) of upper piston (8) and lower piston (10) while by the second sealing ring (9) during valve opening.When
When the step (D) of lower piston (10) lower end is moved to step (C) of bushing (5), the upper transverse plane and water outlet of lower piston (10)
(A) lower end plane flushes, and valve is now arranged in initial open state, and the step (D) of lower piston (10) lower end reaches bushing at this time
(5) step (C) for being, lower piston (10) are fixed and cannot continue to move up.It is further continued for Open valve, upper piston (8)
It continuing to move up, lower piston (10) and the contact surface (B) of upper piston (8) start gap occur, which is known as restriction,
Medium flows to water outlet (A) from the restriction and reaches valve chamber, output valve.Valve is continued on, upper piston (8) continues up shifting
It is dynamic, it adjusts open height and is gradually increased, when restriction reaches maximum position, valve is all turned on.Adjustment adjusts head piece height
Size reaches valve regulated flow to realize flow-rate adjustment.
It, can be in the end face of upper piston (8) and lower piston (10), surfacing in order to improve valve regulated mouth anti-medium performance of flushing
One layer of anti-impact brush material, the service life is longer for valve.
The operation principle of the utility model is：Handle (1), valve stem nut (2) rotation are rotated counterclockwise, valve rod (4) drives
Upper piston (8) moves up, at the same lower piston (10) under the thrust of medium with upper piston (8) synchronize move up, live instantly
After plug (10) is fixed, second sealing ring of lower end water outlet (A) on lower piston (10) upper end cylindrical surface and bushing (5)
(9) it is mutually fitted close, forms sealing pair, blocked the flowing of medium, valve sealing face is protected, valve seal
Face is not just washed away by medium, and valve, which continues on, can be adjusted flow.Handle (1) is rotated clockwise, valve stem nut (2) turns
Dynamic, valve rod (4) drives upper piston (8) to move down, and after upper piston (8) and lower piston (10) contact, upper piston (8) is under
Piston (10) moves downwardly together, the contact surface (B) while the second sealing ring of process (9) of upper piston (8) and lower piston (10), when
When the lower face of upper piston reaches the lower end of the second sealing ring (9), valve is closed.
Claims (3)
1. a kind of balancing throttle valve, by handle (1), valve rod (4), valve stem nut (2), valve body (6), valve deck (3), bushing (5),
Upper piston (8), lower piston (10) composition, it is characterized in that：Bushing (5) is housed in valve body (6), upper work is housed in bushing (5) top
It fills in (8), upper piston (8) lower part is equipped with lower piston (10), upper piston (8), bushing (5), valve deck (3), valve rod (4) Compositional balance chamber
(G), balance hole (F) is equipped in upper piston (8), balance hole (F) is penetrated through with counter balance pocket (G).
2. a kind of balancing throttle valve according to claim 1, it is characterized in that：Bushing (5) is equipped with water outlet (A), lining
Water outlet (A) lower interior portion for covering (5) is equipped with the second sealing ring (9), and the first sealing ring (7) is housed outside upper piston (8) upper end,
First sealing ring (7) is matched with bushing (5) inner surface.
3. a kind of balancing throttle valve according to claim 1 or 2, it is characterized in that：Bushing (5) inner cavity lower part is equipped with step
(C), lower piston (10) lower end is equipped with step (D), step (C) limited step (D), and lower piston (10) lower part is equipped with the 4th sealing ring
(12), lower piston (10), upper middle part are equipped with third sealing ring (11), and lower piston (10) is equipped with medium flow field through-hole (E).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820109098.8U CN207893233U (en) | 2018-01-15 | 2018-01-15 | A kind of balancing throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820109098.8U CN207893233U (en) | 2018-01-15 | 2018-01-15 | A kind of balancing throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207893233U true CN207893233U (en) | 2018-09-21 |
Family
ID=63545705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820109098.8U Active CN207893233U (en) | 2018-01-15 | 2018-01-15 | A kind of balancing throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207893233U (en) |
-
2018
- 2018-01-15 CN CN201820109098.8U patent/CN207893233U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |