CN207848511U - A kind of adjustable pressure reducing valve - Google Patents
A kind of adjustable pressure reducing valve Download PDFInfo
- Publication number
- CN207848511U CN207848511U CN201721892776.4U CN201721892776U CN207848511U CN 207848511 U CN207848511 U CN 207848511U CN 201721892776 U CN201721892776 U CN 201721892776U CN 207848511 U CN207848511 U CN 207848511U
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- valve
- diaphragm
- pressure chamber
- water
- gland
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Abstract
The utility model discloses a kind of adjustable pressure reducing valves, including valve body, water inlet is equipped on the right side of valve body, water outlet is equipped on the left of valve body, valve inner is equipped with flowing water mouth, valve deck is equipped on the upside of valve body, spool is equipped on the upside of flowing water mouth, valve deck is protruding upward, its inside forms pressure chamber, water inlet side is equipped with penstock, water outlet is equipped with water output duct, pressure gauge I is equipped on penstock successively, filter, needle-valve, and it is connected to pressure chamber, pressure gauge II is equipped on water output duct successively, ball valve, pilot valve, and it is connected to pressure chamber, bottom side is equipped with cutter inside water inlet.The beneficial effects of the utility model：Service life is long, easy to use.
Description
Technical field
The utility model is related to a kind of pressure reducing valve, specifically a kind of adjustable pressure reducing valve.
Background technology
Pressure reducing valve is by adjusting, inlet pressure being reduced to the outlet pressure of a certain needs, and by the energy of medium itself
Amount, makes outlet pressure automatically keep stable valve.From the viewpoint of hydrodynamics, pressure reducing valve, which is a local resistance, to be become
The restricting element of change makes the kinetic energy of flow velocity and fluid change, causes the different pressure losses that is, by change orifice size, from
And achieve the purpose that decompression.Then by the adjusting of control and regulating system, the fluctuation of downstream pressure is made to balance each other with spring force,
Downstream pressure is set to be kept constant in certain error range.
At present the pressure of traditional relief valve can only by unload debugging be adjusted, and the spool of traditional relief valve easily by
Water hammer effect influences, and causes service life impaired.
Utility model content
The purpose of this utility model is to provide a kind of adjustable pressure reducing valve.
To achieve the above object, the technical solution of the utility model includes valve body, and water inlet is equipped on the right side of valve body, and valve body is left
Side is equipped with water outlet, and valve inner is equipped with flowing water mouth, and valve deck is equipped on the upside of valve body, is equipped with spool on the upside of flowing water mouth, valve deck is upward
Protrusion, inside form pressure chamber, and water inlet side is equipped with penstock, and water outlet is equipped with water output duct, on penstock according to
It is secondary to be equipped with pressure gauge I, filter, needle-valve, and be connected to pressure chamber, pressure gauge II is equipped on water output duct successively, ball valve, is led
Valve, and be connected to pressure chamber, bottom side is equipped with cutter inside water inlet, and spool further includes sealing gland, sealing flange, diaphragm, film
Piece gland, diaphragm nut, spring and valve rod, valve rod sequentially pass through sealing gland, sealing flange, diaphragm, diaphragm gland, diaphragm spiral shell
Female, spring, and valve deck top is stretched into, valve deck top is equipped with guide groove corresponding with valve rod, and guide groove top is equipped with silk plug, spring
It is socketed in valve rod top, and is connect on the inside of spring upper end and valve deck, lower end covers side with pressing diaphragm and connect, sealing flange and sealing
Be equipped between sealing ring, diaphragm and sealing flange and diaphragm gland between gland and be equipped with O-ring, sealing flange and sealing gland it
Between be equipped with constant pressure chamber, constant pressure chamber connect by communicating pipe with water inlet.
Due to the adoption of the above technical scheme, the beneficial effects of the utility model：
1, by cutter, to being split, multi-strand flow is formed it into, mutually impact is offset, and water hammer effect is eliminated,
The impact to spool is prevented, the service life of spool is influenced.
2, it by controlling pilot valve, realizes regulation and control pressure, adjusts simply, easy to use, pressure is constant precisely.
Description of the drawings
The utility model is described further in conjunction with attached drawing.
Fig. 1 is the structural schematic diagram of the utility model.
In figure：1, valve body, 2, water inlet, 3, water outlet, 4, flowing water mouth, 5, valve deck, 6, spool, 7, pressure chamber, 8, water inlet
Conduit, 9, water output duct, 10, pressure gauge I, 11, filter, 12, needle-valve, 13, pressure gauge II, 14, ball valve, 15, pilot valve, 16,
Cutter, 17, sealing gland, 18, sealing flange, 19, diaphragm, 20, diaphragm gland, 21, diaphragm nut, 22, spring, 23, valve rod,
24, guide groove, 25, silk plug, 26, sealing ring, 27, O-ring, 28, constant pressure chamber, 29, communicating pipe.
Specific implementation mode
If Fig. 1 shows, the utility model includes valve body 1, and 1 right side of valve body is equipped with water inlet 2, and 1 left side of valve body is equipped with water outlet
3, valve body 1 is internally provided with flowing water mouth 4, and 1 upside of valve body is equipped with valve deck 5, and 4 upside of flowing water mouth is equipped with spool 6, and valve deck 5 is protruding upward,
Its inside forms pressure chamber 7, and 2 side of water inlet is equipped with penstock 8, and water outlet 3 is equipped with water output duct 9, on penstock 8 according to
It is secondary to be equipped with pressure gauge I10, filter 11, needle-valve 12, and be connected to pressure chamber 7, pressure gauge is equipped on water output duct 9 successively
II13, ball valve 14, pilot valve 15, and be connected to pressure chamber 7,2 inside bottom side of water inlet is equipped with cutter 16, and spool 6 further includes sealing
Gland 17, sealing flange 18, diaphragm 19, diaphragm gland 20, diaphragm nut 21, spring 22 and valve rod 23, valve rod 23 sequentially pass through
Sealing gland 17, sealing flange 18, diaphragm 19, diaphragm gland 20, diaphragm nut 21, spring 22, and stretch into 5 top of valve deck, valve
5 top of lid is equipped with guide groove 24 corresponding with valve rod 23, and 24 top of guide groove is equipped with silk plug 25, and spring 22 is socketed on valve rod 23
Portion, and 22 upper end of spring is connect with 5 inside of valve deck, lower end is connect with 20 upside of diaphragm gland, sealing flange 18 and sealing gland
Between 17 be equipped with sealing ring 26, between diaphragm 19 and sealing flange 18 and diaphragm gland 20 be equipped with O-ring 27, sealing flange 18 with
Constant pressure chamber 28 is equipped between sealing gland 17, constant pressure chamber 28 is connect by communicating pipe 29 with water inlet 2.
The operation principle of the utility model：When 2 water supply of water inlet, flow is by penstock 8, followed by filter
11, needle-valve 12 are flowed into along water output duct 9 in pilot valve 15 into pressure chamber 7, then through pressure chamber 7, at this time pressure chamber 7 and water inlet
2 pressure of mouth are constant, and sealing ring 26 is fitted closely with flowing water mouth 4, realize sealing, are more than pilot valve 15 when 2 pressure rise of water inlet
When setting pressure, pilot valve 15 drains, and enters water outlet 3 along water output duct 9 by ball valve 14, since the water supply of needle-valve 12 is less than
The displacement of pilot valve 15, at this time the pressure in pressure chamber 7 be less than water inlet 2 pressure, spool 6 rise, drained, work as water inlet
It after 2 pressure of mouth become smaller, is acted on by spring 22, spool 6 is fallen after rise, completes sealing, and prevented to flow segmentation by cutter 16
Water hammer effect.
Claims (3)
1. a kind of adjustable pressure reducing valve, including valve body, it is characterised in that：Water inlet is equipped on the right side of the valve body, the valve body is left
Side is equipped with water outlet, and the valve inner is equipped with flowing water mouth, and valve deck is equipped on the upside of the valve body, valve is equipped on the upside of the flowing water mouth
Core, the valve deck is protruding upward, and inside forms pressure chamber, and the water inlet side is equipped with penstock, and the water outlet is set
There is water output duct, is equipped with pressure gauge I, filter, needle-valve successively on the penstock, and be connected to pressure chamber, the water outlet
Pressure gauge II, ball valve, pilot valve are equipped on conduit successively, and is connected to pressure chamber, bottom side is equipped with cutter inside the water inlet.
2. a kind of adjustable pressure reducing valve according to claim 1, it is characterised in that：The spool further includes sealing gland, close
Envelope flange, diaphragm, diaphragm gland, diaphragm nut, spring and valve rod, the valve rod sequentially pass through sealing gland, sealing flange, film
Piece, diaphragm gland, diaphragm nut, spring, and valve deck top is stretched into, the valve deck top is equipped with guide groove corresponding with valve rod,
The guide groove top is equipped with silk plug, and the spring is socketed in valve rod top, and is connect on the inside of spring upper end and valve deck, lower end and
Pressing diaphragm covers side connection, and sealing ring, the diaphragm and sealing flange and film are equipped between the sealing flange and sealing gland
O-ring is equipped between piece gland.
3. a kind of adjustable pressure reducing valve according to claim 1, it is characterised in that：It is equipped between sealing flange and sealing gland
Constant pressure chamber, the constant pressure chamber are connect by communicating pipe with water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721892776.4U CN207848511U (en) | 2017-12-29 | 2017-12-29 | A kind of adjustable pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721892776.4U CN207848511U (en) | 2017-12-29 | 2017-12-29 | A kind of adjustable pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207848511U true CN207848511U (en) | 2018-09-11 |
Family
ID=63419841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721892776.4U Active CN207848511U (en) | 2017-12-29 | 2017-12-29 | A kind of adjustable pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207848511U (en) |
-
2017
- 2017-12-29 CN CN201721892776.4U patent/CN207848511U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |