CN208687045U - A kind of spring piston type pressure reducing valve - Google Patents
A kind of spring piston type pressure reducing valve Download PDFInfo
- Publication number
- CN208687045U CN208687045U CN201821236427.1U CN201821236427U CN208687045U CN 208687045 U CN208687045 U CN 208687045U CN 201821236427 U CN201821236427 U CN 201821236427U CN 208687045 U CN208687045 U CN 208687045U
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- valve
- valve body
- spring
- spool
- valve rod
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Abstract
The utility model discloses a kind of spring piston type pressure reducing valves, including the valve body with import, outlet and the spool being located in valve body, cap is also equipped with above valve body, valve rod is also equipped in valve body, valve rod is also fixedly connected with spool, and upper spring is equipped in cap, and body base is also equipped with lower cover, it is arranged with lower spring outside spool to the valve rod between lower cover, lower both ends of the spring is against respectively on spool and lower lid；Inlet and outlet is the form of low in and high out, and pistons work chamber is equipped in the valve body of valve stem top, and piston is equipped on the valve rod of pistons work chamber, and piston and the sealing sliding cooperation of pistons work cavity wall, pistons work chamber are communicated with outlet.Medium trend is changed to low in and high out by high in and low out in the prior art, and by being depressurized under the upper and lower dual spring mode of action, the precision of voltage regulation can be greatly improved by being so changed to downstream pressure by original upstream pressure, sensitivity is effectively promoted, in use, downstream pressure can reach static pressure state.
Description
Technical field
The utility model relates to pressure reducing valve field, especially a kind of spring piston type pressure reducing valve.
Background technique
Piston reducing valve is that pressure is balanced by piston, flap movement is driven, mainly by adjustment spring, diaphragm, work
The parts such as plug, valve seat, flap composition, is the regeneration product of spring diaphragm reducing valve.Utilize piston direct pick-up downstream pressure
Flap is driven, control flap aperture completes pressure-reduced and-regulated function.Although existing piston reducing valve reaches medium in valve body
Depressurization, but there is also certain defects, such as its stability is low, and sensitivity still has room for promotion.
Summary of the invention
The purpose of this utility model: in order to overcome the drawbacks of the prior art, the utility model provides a kind of stability
High, sensitive spring piston type pressure reducing valve.
The technical solution of the utility model includes: including that there is import, the valve body of outlet and the spool that is located in valve body, the valve
It is also equipped with cap above body, valve rod is also equipped in the valve body, the valve rod is also fixedly connected with spool, in the cap
Equipped with upper spring, the body base is also equipped with lower cover, and lower spring, institute are arranged with outside the spool to the valve rod between lower cover
Lower both ends of the spring is stated to be against respectively on spool and lower lid；The inlet and outlet is the form of low in and high out, the valve stem top
Valve body in be equipped with pistons work chamber, piston, the piston and pistons work chamber are installed on the valve rod of the pistons work chamber
Inner wall sealing sliding cooperation, the pistons work chamber are communicated with outlet.
By adopting the above technical scheme, medium trend is changed to low in and high out by high in and low out in the prior art, and by upper
It is depressurized under the lower dual spring mode of action, pressure stabilizing essence can be greatly improved by being so changed to downstream pressure by original upstream pressure
Degree, sensitivity is effectively promoted, in use, downstream pressure can reach static pressure state.
The further setting of the utility model: being also arranged with locating plate on valve rod, the locating plate and pistons work are intracavitary
Wall slip cooperation, the locating plate offer through-hole in the axial direction.
Using above-mentioned further setting, locating plate can position pistons work range, make piston always in piston
Axial stroke side's upward sliding of working chamber.
The further setting of the utility model: on valve rod have step, the step be resisted against on locating plate bottom surface and
O-ring is installed between locating plate bottom surface.
Further it is arranged using above-mentioned, O-ring buffers the collision of step and locating plate.
The further setting again of the utility model: the cylinder sleeve with piston cooperation, the valve body and cap are installed on valve body
Cover the cylinder sleeve mounting groove offered respectively for accommodating cylinder sleeve.
Using above-mentioned setting further again, cylinder sleeve is replaceable, saves cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model specific embodiment；
Wherein, valve body 1, spool 2, cap 3, valve rod 4, lower cover 5, import 11, outlet 12, upper spring 61, lower spring 62 are living
Fill in working chamber 13, piston 14, locating plate 41, through-hole 411, O-ring 412, cylinder sleeve 15, adjusting bolt 7.
Specific embodiment
A kind of spring piston type pressure reducing valve as shown in Figure 1 including the valve body 1 with import 11, outlet 12 and is located at valve
Spool 2 in body 1 is also equipped with cap 3 above the valve body 1, valve rod 4 is also equipped in the valve body 1, the valve rod 4 is also
It is fixedly connected with spool 2, is equipped with upper spring 61 in the cap 3,1 bottom of valve body is also equipped with lower cover 5, the spool 2
It is arranged with lower spring 62 outside to the valve rod 4 between lower cover 5, lower 62 both ends of spring are against respectively on spool 2 and lower cover 5；Institute
It states import 11 and outlet 12 is the form of low in and high out, be equipped with pistons work chamber 13 in the valve body 1 at 4 top of valve rod, it is described
Piston 14, the piston 14 and the sealing sliding cooperation of 13 inner wall of pistons work chamber are installed on the valve rod of pistons work chamber 13, it is living
Plug working chamber 13 is communicated with outlet 12.Locating plate 41, wall slip in locating plate 41 and pistons work chamber 13 are also arranged on valve rod 4
Cooperation, locating plate 41 offer through-hole 411 in the axial direction.There is step, step is resisted against 41 bottom surface of locating plate on valve rod 4
On, and O-ring 412 is installed between 41 bottom surface of step and locating plate.Locating plate 41 can be determined pistons work range
Position, makes piston 14 always in axial stroke side's upward sliding of pistons work chamber 13.It is equipped on valve body and the cooperation of piston 14
The cylinder sleeve mounting groove for accommodating cylinder sleeve is offered on cylinder sleeve 15, valve body 1 and cap 3 respectively.
Utility model works principle is: medium moves towards low in and high out, causes stress loss by throttling and forces inlet-pressure
Power reduces a certain desired value in exit and controls outlet pressure base using medium energy itself when flow and pressure change
This constant purpose.It is that rotation adjusts bolt 7 when adjusting outlet pressure, forces piston 14 to move down, open main valve, change
Orifice size causes stress loss, realizes decompression.Since medium passes through 14 lower section of inlet and outlet inflow piston in valve body after valve
Pistons work chamber 13, acted on using the elastic force of upper spring 61 and lower spring 62, make to keep balance above piston 14, when pressure and
When changes in flow rate, main valve orifice size is made to remain corresponding position, the utility model reduces 11 pressure change of import to out
The influence of 12 pressure of mouth, while outlet 12 pressure application surfaces product is increased, it posts and increases sensing element active area, to reduce
12 pressure divergence of valve export, substantially increases the precision of voltage regulation.
Claims (4)
1. a kind of spring piston type pressure reducing valve, including the valve body with import, outlet and the spool being located in valve body, the valve body
Top is also equipped with cap, and valve rod is also equipped in the valve body, and the valve rod is also fixedly connected with spool, sets in the cap
There is upper spring, the body base is also equipped with lower cover, it is characterised in that: be arranged with outside the spool to the valve rod between lower cover
Lower spring, the lower both ends of the spring are against respectively on spool and lower lid；The inlet and outlet is the form of low in and high out, described
It is equipped with pistons work chamber in the valve body of valve stem top, piston, the piston and work are installed on the valve rod of the pistons work chamber
The sealing sliding cooperation of work cavity wall is filled in, the pistons work chamber is communicated with outlet.
2. a kind of spring piston type pressure reducing valve according to claim 1, it is characterised in that: it is fixed to be also arranged on the valve rod
Bit slice, the locating plate and the intracavitary wall slip of pistons work cooperate, and the locating plate offers through-hole in the axial direction.
3. a kind of spring piston type pressure reducing valve according to claim 2, it is characterised in that: there is step on the valve rod,
The step is resisted against on locating plate bottom surface and is equipped with O-ring between locating plate bottom surface.
4. a kind of spring piston type pressure reducing valve according to claim 1 or 3, it is characterised in that: be equipped on the valve body
With the cylinder sleeve of piston cooperation, the cylinder sleeve mounting groove for accommodating cylinder sleeve is offered on the valve body and cap respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821236427.1U CN208687045U (en) | 2018-08-02 | 2018-08-02 | A kind of spring piston type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821236427.1U CN208687045U (en) | 2018-08-02 | 2018-08-02 | A kind of spring piston type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208687045U true CN208687045U (en) | 2019-04-02 |
Family
ID=65883500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821236427.1U Active CN208687045U (en) | 2018-08-02 | 2018-08-02 | A kind of spring piston type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208687045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017381A (en) * | 2019-04-04 | 2019-07-16 | 北消安全设备(北京)有限公司 | A kind of pilot valve for pressure reducing valve |
-
2018
- 2018-08-02 CN CN201821236427.1U patent/CN208687045U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017381A (en) * | 2019-04-04 | 2019-07-16 | 北消安全设备(北京)有限公司 | A kind of pilot valve for pressure reducing valve |
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