CN209041686U - A kind of piston type branch pipe pressure-reducing valve - Google Patents
A kind of piston type branch pipe pressure-reducing valve Download PDFInfo
- Publication number
- CN209041686U CN209041686U CN201821701249.5U CN201821701249U CN209041686U CN 209041686 U CN209041686 U CN 209041686U CN 201821701249 U CN201821701249 U CN 201821701249U CN 209041686 U CN209041686 U CN 209041686U
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- piston
- valve body
- branch pipe
- runner
- flap
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Abstract
The utility model relates to a kind of piston type branch pipe pressure-reducing valves, including valve body, piston component, flap, the valve body include upper valve body, lower valve body, middle valve body and valve deck, and setting is fluted in the lower valve body, the flap is arranged in the groove, the piston component includes the adjusting screw being set on the valve deck, and is set in turn in the intracorporal spring bearer plate of the upper valve, spring and piston from top to bottom, and the upper valve body is separated into piston upper chamber and piston cavity of resorption by the piston；The piston upper chamber is provided with venthole；The adjusting screw lower part is abutted against with the spring bearer plate, locking nut is arranged in top, the both ends of the spring are abutted with the spring bearer plate and the piston respectively, and the bottom of the piston is provided with piston rod, and the lower part of the piston rod is fixedly connected with the flap；Access opening is offered on the middle valve body roof.The utility model can be higher than 1.6MPa in pressure, and temperature uses in the medium higher than 120 DEG C.
Description
Technical field
The utility model relates to a kind of valves, and in particular to a kind of piston type branch pipe pressure-reducing valve.
Background technique
Existing branch pipe pressure-reducing valve (pressure reducing valve that bore is less than DN50mm) is generally using rubber diaphragm as pressure sensitive member
Part has many advantages, such as that high sensitivity, manufacture craft are simple, cheap, is widely used.But because rubber diaphragm bearing capacity
Low, non-refractory is not able to satisfy the use of high temperature and high pressure condition, can only be lower than 1.6MPa in pressure, temperature is lower than 120 DEG C of Jie
It is used in matter.Therefore, 1.6MPa can be higher than in pressure by researching and developing one kind, and temperature is depressurized in the medium higher than 120 DEG C using branch pipe
Valve seems most important.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of piston type branch pipe pressure-reducing valve, energy
Enough to be higher than 1.6MPa in pressure, temperature uses in the medium higher than 120 DEG C.
To achieve the above object, technical solution adopted in the utility model is as follows:
A kind of piston type branch pipe pressure-reducing valve, including the valve body with runner, be set to the intracorporal piston component of the valve with
And adjust the flap of the runner size, the valve body includes upper valve body, lower valve body, be set to the upper valve body and lower valve body it
Between middle valve body, and be set to the valve deck at the top of the upper valve body, the middle part setting of the lower valve body is fluted, and the flap is set
It is placed in the groove, threaded hole is provided on the valve deck, the piston component includes the adjusting being set on the valve deck
Screw, and be set in turn in the intracorporal spring bearer plate of the upper valve, spring and piston from top to bottom, the piston will be described on
Valve body is separated into piston upper chamber and piston cavity of resorption；Position corresponding with the piston upper chamber is provided on the upper valve body sidewall
Venthole；The adjusting screw is disposed through in the threaded hole and is threadedly coupled with the threaded hole, the adjusting screw
Lower part abuts against after extending to the piston upper chamber with the spring bearer plate, and the top for adjusting screw passes through the threaded hole
After locking nut is set, the both ends of the spring are abutted with the spring bearer plate and the piston respectively, the bottom of the piston
It is fixedly installed piston rod, the lower part of the piston rod passes through the middle valve body and is fixedly connected with the flap；The middle valve body
Roof on offer the access opening for being connected to the piston cavity of resorption and the runner.
Further, it is provided with several annular grooves on the outer wall of the piston, is provided with piston in the annular groove
Sealing ring.
Further, be provided with downwardly projecting flow-stopping plate on the roof of the middle valve body, the flow-stopping plate will be described in
Valve body is separated into inlet end and an outlet end, offers front end respectively in the two sides of the flow-stopping plate on the bottom wall of the middle valve body and flows
Road junction and rear end runner mouth, the input end, front end runner mouth, groove, rear end runner mouth and outlet end are sequentially communicated to form institute
State runner.
Further, be provided with centre bore on the flap, on the roof of the middle valve body with the front end runner mouth
Corresponding position is provided with through-hole, and the lower part of the piston rod is set after sequentially passing through the through-hole, front end runner mouth, centre bore
It is equipped with nut.
Further, the access opening is set to the outlet end of the middle valve body.
Further, the inlet end and an outlet end is provided with screw channel mouth.
Compared with prior art, the utility model has the beneficial effects that:
The utility model, as pressure responsive element, can be higher than 1.6MPa in pressure, temperature is higher than 120 using piston
DEG C medium in use, the shortcomings that it is low to overcome rubber diaphragm bearing capacity, non-refractory.The utility model locking nut is set
It sets, can prevent in use process, adjust screw loosening and make the pressure change designed.The setting of the utility model venthole will live
Chamber is communicated with the atmosphere beyond the Great Wall；It prevents the air of piston upper chamber from generating positive pressure or negative pressure, influences the operation of piston.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment；
Structural schematic diagram when Fig. 2 is runner closed state in the utility model one embodiment；
In figure: 1, flap, 2, upper valve body, 3, lower valve body, 4, middle valve body, 5, valve deck, 6, bolt one, 7, bolt two, 8,
Groove, 9, adjusting screw, 10, spring bearer plate, 11, spring, 12, piston, 13, piston upper chamber, 14, piston cavity of resorption, 15, ventilation
Hole, 16, locking nut, 17, piston rod, 18, access opening, 19, piston packing ring, 20, flow-stopping plate, 21, input end, 22, outlet
End, 23, front end runner mouth, 24, rear end runner mouth, 25, nut, 26, screw channel mouth.
Specific embodiment
Further details of narration is carried out to the utility model below in conjunction with attached drawing.
One embodiment of a kind of piston type branch pipe pressure-reducing valve as shown in Figure 1 and 2, including the valve body with runner, setting
In the intracorporal piston component of the valve and the flap 1 of the adjusting runner size, the valve body includes upper valve body 2, lower valve body
3, it is set to middle valve body 4 between the upper valve body 2 and lower valve body 3, and 2 top of upper valve body is set to by bolt 1
Valve deck 5, the upper valve body 2, lower valve body 3 and middle valve body 4 are connected as an entirety by bolt 27；In the lower valve body 3
Portion's setting fluted 8, the flap 1 is set in the groove 8, and threaded hole, the piston component are provided on the valve deck 5
Including the adjusting screw 9 being set on the valve deck 5, and the spring pressure being set in turn in the upper valve body 2 from top to bottom
The upper valve body 2 is separated into piston upper chamber 13 and piston cavity of resorption 14 by plate 10, spring 11 and piston 12, the piston 12；It is described
Position corresponding with the piston upper chamber 13 is provided with venthole 15 on 2 side wall of upper valve body；The adjusting screw 9 is through setting
It is threadedly coupled in the threaded hole and with the threaded hole, after 9 lower part of adjusting screw extends to the piston upper chamber 13
It is abutted against with the spring bearer plate 10, locking nut 16 is arranged after passing through the threaded hole in the top for adjusting screw 9, described
The both ends of spring 11 are abutted with the spring bearer plate 10 and the piston 12 respectively, and the bottom of the piston 12 is fixedly installed
Piston rod 17, the lower part of the piston rod 17 pass through the middle valve body 4 and are fixedly connected with the flap 1；The top of the middle valve body 4
The access opening 18 of the connection piston cavity of resorption 14 and the runner is offered on wall.The utility model is used as pressure using piston 12
Sensing element can be higher than 1.6MPa in pressure, and temperature uses in the medium higher than 120 DEG C, overcomes rubber diaphragm pressure-bearing
The shortcomings that ability is low, non-refractory.The setting of the utility model locking nut 16 can prevent in use process, adjust 9 pine of screw
Pressure change that is dynamic and making design.9 lower part of adjusting screw described in the utility model is abutted against with the spring bearer plate 10, can under
Pressing spring 11, and thrust F2 is generated to piston 12.Piston upper chamber 13 is communicated with the atmosphere for the setting of the utility model venthole；It is anti-
Only the air of piston upper chamber 13 generates positive pressure or negative pressure, influences the operation of piston 12.The utility model venthole 15 is set to work
Chamber 13 beyond the Great Wall avoid fluid and flow into venthole 15 far from runner.
Further, several annular grooves are provided on the outer wall of the piston 12, are provided with work in the annular groove
Fill in sealing ring 19.Gap between the salable piston 12 of setting and the upper valve body 2 of the utility model piston packing ring 19, prevents
Only in piston cavity of resorption 14 dielectric leakage to piston upper chamber 13.
Further, it is provided with downwardly projecting flow-stopping plate 20 on the roof of the middle valve body 4, the flow-stopping plate 20 is by institute
It states middle valve body 4 and is separated into input end 21 and outlet end 22, distinguish on the bottom wall of the middle valve body 4 in the two sides of the flow-stopping plate 20
Offer front end runner mouth 23 and rear end runner mouth 24, the input end 21, front end runner mouth 23, groove 8, rear end runner mouth 24
It is sequentially communicated to form the runner with outlet end 22.
Further, be provided with centre bore on the flap 1, on the roof of the middle valve body 4 with the front end runner
Mouthful 23 corresponding positions are provided with through-hole, the lower part of the piston rod 17 sequentially pass through the through-hole, front end runner mouth 23, in
Nut 25 is provided with behind heart hole.
Further, the access opening 18 is set to the outlet end 22 of the middle valve body 4.The runner of the utility model is
Be sequentially communicated by input end 21, front end runner mouth 23, groove 8, rear end runner mouth 24 and outlet end 22 formed have middle part folding
Curved straight channel, and access opening 18 is set to outlet end 22, which can make the variation of the pressure difference in runner sensitive, quick
It reacts to piston.
Further, the input end 21 and outlet end 22 are provided with screw channel mouth 26.
Working principle of the utility model is:
When original state, flap 1, which is in, opens dress state, referring to Fig. 1.When liquid is by the screw channel mouth 26 of input end 21
Into when, through front end runner mouth 23, rear end runner mouth 24 enter outlet end 22, meanwhile, wherein one liquid through access opening 18 into
Enter piston cavity of resorption 14, form thrust F1, pushes piston 12 to overcome 11 thrust F2 of spring and uplink, pass through piston rod 17 and drive flap
1 uplink；At this point, the area of passage of front end runner mouth 23 reduces, the fluid pressure P2 of outlet end 22 also accordingly reduces；With outlet
The reduction of 22 pressure P2 is held, 11 pressure P3 of spring is greater than the thrust P2 of piston cavity of resorption 14, and piston 12 starts downlink；At this point, front end
The area of passage of runner mouth 23 increases, and 22 pressure P2 of outlet end increases, and piston 12 starts uplink again, starts next circulation.
When the 11 thrust F2 of spring of the thrust F1 of piston cavity of resorption 14 and piston upper chamber 13 is balanced, piston 12 is no longer moved,
The area of passage of front end runner mouth 23 no longer changes, and 22 pressure P2 of outlet end stablizes constant.
When 21 pressure P1 of input end changes, 22 pressure P2 of outlet end also accordingly changes, at this point, piston cavity of resorption
14 thrust F1 also changes, and piston 12 will move up and down, and so that F1 and F2 is reached new balance, 22 pressure P2 of outlet end is again
Stablize constant.
When 21 pressure P1 of input end is sharply increased or 22 flow of outlet end sharply becomes smaller, 22 pressure P2 of outlet end will be big
Width increases, and the thrust F1 of piston cavity of resorption 14 is substantially higher than the thrust F2 of piston upper chamber 13, piston 12 will rapidly uplink, until flap
1 completely closes front end runner mouth 23, sees Fig. 2.
Rotation adjust screw 9 can adjustment spring 11 to the thrust F2 of piston 12, to adjust the pressure P2 of outlet end 22；
After adjusting, locking nut 16 is tightened, can be prevented in use process, the pressure change that screw 9 loosens and makes design is adjusted.
Since runner mouth 23 pairs of liquid in front end generate certain resistance, 21 pressure P1 of input end is always larger than outlet
Hold 22 pressure P2.
Embodiment described above is only the preferred embodiment of the utility model, and the not feasible implementation of the utility model
Exhaustion.For persons skilled in the art, it is made under the premise of without departing substantially from the utility model principle and spirit
Any obvious change out, should all be contemplated as falling within the claims of the utility model.
Claims (6)
1. a kind of piston type branch pipe pressure-reducing valve, which is characterized in that including the valve body with runner, be set to the intracorporal work of the valve
Plug assembly and the flap (1) for adjusting the runner size, the valve body includes upper valve body (2), and lower valve body (3) is set to institute
Middle valve body (4) between upper valve body (2) and lower valve body (3) is stated, and is set to the valve deck (5) at the top of the upper valve body (2), it is described
Fluted (8) are arranged in the middle part of lower valve body (3), and the flap (1) is set in the groove (8), are arranged on the valve deck (5)
There is threaded hole, the piston component includes the adjusting screw (9) being set on the valve deck (5), and is successively set from top to bottom
Spring bearer plate (10), spring (11) and the piston (12) being placed in the upper valve body (2), the piston (12) is by the upper valve body
(2) piston upper chamber (13) and piston cavity of resorption (14) are separated into；It is opposite with the piston upper chamber (13) on upper valve body (2) side wall
The position answered is provided with venthole (15)；The adjusting screw (9) be disposed through in the threaded hole and with the threaded hole
It being threadedly coupled, adjusting screw (9) lower part extends to the piston upper chamber (13) and abuts against afterwards with the spring bearer plate (10),
Locking nut (16) are arranged after passing through the threaded hole in the top for adjusting screw (9), the both ends difference of the spring (11)
It being abutted with the spring bearer plate (10) and the piston (12), the bottom of the piston (12) is fixedly installed piston rod (17),
The lower part of the piston rod (17) passes through the middle valve body (4) and is fixedly connected with the flap (1)；The top of the middle valve body (4)
The access opening (18) of the connection piston cavity of resorption (14) and the runner is offered on wall.
2. a kind of piston type branch pipe pressure-reducing valve according to claim 1, which is characterized in that on the outer wall of the piston (12)
Several annular grooves are provided with, piston packing ring (19) are provided in the annular groove.
3. a kind of piston type branch pipe pressure-reducing valve according to claim 1, which is characterized in that the roof of the middle valve body (4)
On be provided with downwardly projecting flow-stopping plate (20), the flow-stopping plate (20) by the middle valve body (4) be separated into input end (21) and
Outlet end (22) offers front end runner mouth in the two sides of the flow-stopping plate (20) on the bottom wall of the middle valve body (4) respectively
(23) and rear end runner mouth (24), the input end (21), front end runner mouth (23), groove (8), rear end runner mouth (24) and go out
Mouth end (22) is sequentially communicated to form the runner.
4. a kind of piston type branch pipe pressure-reducing valve according to claim 3, which is characterized in that be provided on the flap (1)
Centre bore, position corresponding with front end runner mouth (23) is provided with through-hole, the work on the roof of the middle valve body (4)
The lower part of stopper rod (17) is provided with nut (25) after sequentially passing through the through-hole, front end runner mouth (23), centre bore.
5. a kind of piston type branch pipe pressure-reducing valve according to claim 3, which is characterized in that the access opening (18) is set to
The outlet end (22) of the middle valve body (4).
6. a kind of piston type branch pipe pressure-reducing valve according to claim 3, which is characterized in that the input end (21) and outlet
End (22) is provided with screw channel mouth (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821701249.5U CN209041686U (en) | 2018-10-19 | 2018-10-19 | A kind of piston type branch pipe pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821701249.5U CN209041686U (en) | 2018-10-19 | 2018-10-19 | A kind of piston type branch pipe pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209041686U true CN209041686U (en) | 2019-06-28 |
Family
ID=67036622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821701249.5U Active CN209041686U (en) | 2018-10-19 | 2018-10-19 | A kind of piston type branch pipe pressure-reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209041686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307347A (en) * | 2019-07-19 | 2019-10-08 | 永嘉企达知识产权咨询有限公司 | A kind of high sealing pressure reducing valve |
-
2018
- 2018-10-19 CN CN201821701249.5U patent/CN209041686U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307347A (en) * | 2019-07-19 | 2019-10-08 | 永嘉企达知识产权咨询有限公司 | A kind of high sealing pressure reducing valve |
| CN110307347B (en) * | 2019-07-19 | 2020-10-09 | 永嘉企达知识产权咨询有限公司 | High-sealing pressure reducing valve |
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