CN202834257U - High pressure reducing ratio constant pressure pressure-reducing valve - Google Patents
High pressure reducing ratio constant pressure pressure-reducing valve Download PDFInfo
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- CN202834257U CN202834257U CN201220436884.1U CN201220436884U CN202834257U CN 202834257 U CN202834257 U CN 202834257U CN 201220436884 U CN201220436884 U CN 201220436884U CN 202834257 U CN202834257 U CN 202834257U
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Abstract
The utility model relates to a high pressure reducing ratio constant pressure pressure-reducing valve. The valve body is formed by a valve body 1 and a valve body 2 in threaded connection into a whole with a water inlet and a water outlet. The water inlet is screwed with a valve seat cover. The inner bore of the valve seat cover is provided with two grooves and a corresponding baled-edge. The downstream end of the valve seat cover is provided with an annular blade-edge and respectively acting as three valve seat of the reducing valve opening. A spool is a sleeve with a blind hole in the center. The upstream end of the sleeve is a stepped shaft and the downstream end is provided with a piston with a larger diameter. The larger side surface of the stepped shaft is processed with a groove. A valve clack matched with the annular blade-edge of the downstream end of the valve seat cover is arranged inside the stepped shaft. The shaft rod of the stepped shaft is provided with two bulge loops matched with two blade-edges inside the inner bore of the valve seat cover. The outer ring of the piston is slidingly matched with a cylinder on the upstream side of the valve body 2. A spring is arranged between the piston and the valve body1. The constant pressure pressure-reducing valve is adjusted when leaving the factory and has the advantages of possessing a simple structure, using a plurality of valve ports to process multilevel throttling on the flowing medium, effectively reducing the flowing speed when the medium flow through the valve ports and prolonging the service life of products.
Description
Technical field
The utility model relates to a kind of valve, relates in particular to a kind of high Pressure reducing ratio constant pressure pressure-reducing valve.
Background technique
Reduction valve has been widely used in tall building, water engineering and the municipal water supply engineering, and the having determined pressure adjusting problem of water supply system and pressure and the flow that water spot is used in control effectively is situated between.But the reduction valve of supply exists following point and affects popularization in the market: 1, and outlet pressure is adjustable, so complex structure, part is many, volume is large, cost is high.And when under many occasions, using, in case after outlet pressure is set up on demand, in use need not to regulate again.2, owing to being single valve seat, the actual Pressure reducing ratio that uses generally is not more than 3, when Pressure reducing ratio is larger, High Pressure Difference can all concentrate on the valve port of flap and valve seat composition, and consequent high speed flow cognition is washed away valve port, thereby produces noise or pipe vibration, even cause the cavitation cavitation erosion, shortened widely the working life of valve.Therefore at Pressure reducing ratio greater than 3 occasion, often Mining is with the methods of two or several reduction valve series connection, to be reduced in the pressure drop on every reduction valve, this has just increased the complexity of installation, makes troubles to daily maintenance, and has increased cost.
Summary of the invention
The utility model main purpose is: solve the existing deficiency of prior art, thereby develop a kind of high Pressure reducing ratio and high Pressure reducing ratio constant pressure pressure-reducing valve simple in structure, long service life.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of high Pressure reducing ratio constant pressure pressure-reducing valve, have valve body, spool, and it is characterized in that:
Described valve body is threaded into the integral body with water intake and water outlet by valve body one and valve body dual-purpose, and has seam to guarantee that the center line of water intake, water outlet and each endoporus is on the same straight line;
Be combined with the valve seat cover in the described water intake, be provided with two grooves and corresponding sword limit in the described valve seat cover endoporus, valve seat cover downstream is provided with an annular sword limit; Respectively as the decompression valve port one, valve port two and valve port three three Ma valve seats;
The valve body is a central blind hole drilled sleeve, the sleeve is a stepped shaft upstream end, a downstream end having a larger diameter piston; larger end face of said stepped shaft with a groove processing, equipped with seat cover next, downstream end of the annular blade edge with the flap valve, stepped shaft arbor with two holes Ma and seat kit with two convex ring blade edges were composed of three valve port; said two piston turning the upstream side of the valve body slidably cylinder, sleeve and body outer slide with a central hole.
The technical solution of the utility model can also be further perfect:
As preferably, be provided with spring between the groove of described valve core piston upstream side end face and the valve body one center hole hole shoulder.
As preferably, described spool end is provided with some radial holes, and described aperture is communicated with the blind hole at center.
As preferably, between the cylinder barrel of described outside piston and valve body two upstream sides and sleeve cylindrical and valve body one center hole sealing surface place be provided with for reduce between the two frictional force and the lattice of frictional coefficient enclose or this special envelope.
As preferably, described valve body one cylindrical is drilled with vent.
As preferably, described valve body one upstream extremity external diameter is provided with outside thread, and described valve body two downstream internal diameters are provided with internal thread, and described screw thread is respectively applied to be connected with outlet conduit with water supply line.
The beneficial effects of the utility model are:
1, the outlet pressure of reduction valve is set up when dispatching from the factory.In use need not to regulate, when import hydraulic pressure or flow generation fluctuation, outlet pressure can utilize the structure of self automatically to adjust, and substantially keeps definite value again.The large I of outlet pressure is selected according to the requirement of use occasion.Owing to there not being a pressure regulating mechanism, therefore simple in structure, part is few, volume is little, cost is low, regular maintenance is also more convenient.
2, high Pressure reducing ratio.Because the medium of Cai Yong Duo Ma valve port flow carries out multistage throttle, make the high pressure drop reasonable distribution on each valve port, like this, single valve port pressure drop is significantly reduced, effectively reduce MEDIA FLOW and crossed the flow velocity of valve port, prevented the generation of noise, vibration and cavitation.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Description of reference numerals: valve seat cover 1, valve body 1, flap 3, this special envelope 4, spring 5, sealing gasket 6, spool 7, lattice enclose 8, valve body 29, valve port one V1, valve port two V2, valve port three V3, vent a, runner b, aperture d, breach Z, inlet pressure P1, outlet pressure P2, intermediate cavity M, pressure-sensitive face S, pressure-sensitive chamber N, cavity H.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.
Embodiment:
High Pressure reducing ratio constant pressure pressure-reducing valve as shown in the figure, by valve seat cover 1, valve body 1, flap 3, this special envelope 4, spring 5, sealing gasket 6, spool 7, lattice enclose 8, the part such as valve body 29 forms.
Valve body 1 is one to have the stepped shaft cylinder of stepped shaft endoporus, is combined with valve seat cover 1 in the water intake of upstream extremity, and has seam to guarantee that the center line of the endoporus of valve seat cover 1 and water intake is consistent; Valve seat overlaps the corresponding sword limit of two grooves in 1 endoporus and the annular sword limit of downstream, respectively the three Ma valve seats of conduct decompression valve port one V1, valve port two V2 and valve port three V3; Cavity between valve seat cover 1 and the valve body 1 is intermediate cavity M; The water intake of valve body 1 is connected with water supply line with outside thread.
Valve body 29 is the cylinder of a hollow, and the endoporus of upstream side is a cylinder barrel, and downstream is water outlet, and is connected with outlet conduit with internal thread.
Valve body 1 is threaded into an integral body with valve body 29 usefulness, and has seam to guarantee that the center line of water intake, water outlet and each endoporus is on the same straight line; In the inner chamber that they form spool 7 is housed, each Inner hole and the cylindrical center line of spool 7 are consistent with the center line of entery and delivery port.
valve element 7 is a sleeve with a blind hole drill in the center , the sleeve is a stepped shaft upstream end, a downstream end having a large diameter piston.Be processed with groove on the large end face of multidiameter shaft, in establish flap 3, material is folder cloth ethylene propylene diene rubber; You Liang Ma bulge loop on the axostylus axostyle of multidiameter shaft, this two bulge loop and flap 3 overlaps the corresponding sword limit of two grooves in the 1 Inner hole with valve seat and the annular sword limit of downstream forms respectively reduction valve De San Ma valve port V1, V2 and V3.The cylinder barrel cunning of the cylindrical of piston and valve body 29 upstream sides is joined, and end face is pressure-sensitive face S, and the cavity between pressure-sensitive face S and the valve body 29 is pressure-sensitive chamber N; The center hole cunning of the cylindrical of sleeve and valve body 1 is joined, and spool 7 can be at the center hole of valve body 1 and freely mobile in the cylinder barrel of valve body 29 upstream sides, and in order to reduce friction and frictional coefficient, sealing surface adopts respectively this special envelope to pass and encloses sealing; The blind hole at spool 7 centers is as runner b, and its end has 4 aperture d to communicate with runner b.Be provided with spring 5 between the groove of piston upstream side end face and valve body one 2 center hole holes shoulder, spring 5 has certain pre compressed magnitude after installation, therefore, is acting on all the time on the spool 7 and is making its downstream mobile active force, even each valve port is opened large active force.The size of outlet hydraulic pressure changes the pressure of spring 5 by the pressure setting of spring 5, can change outlet hydraulic pressure.Correct position at valve body one 2 cylindricals is drilled with vent a, and the cavity H between valve body 1, the valve body 29 is communicated with atmosphere, in order to avoid produce gas-tight phenomenon when spool 7 moves.Several breach Z hooks screwing tool and uses on valve body one, two cylindricals when screwing them.
Working principle of the present utility model:
The upstream medium is through water intake, valve port one V1, valve port two V2, valve port three V3, and intermediate cavity M, aperture d, runner b pressure-sensitive chamber N and water outlet supply water downstream.Medium through three valve ports after pressure be down to P2 by P1, act on the pressure-sensitive face S, when outlet pressure P2 surpasses setting pressure, overcome the pressure of spring 5, promote spool 7 upstream direction and move, until with the pressure balance of spring 5.Basically mean allocation is on each valve port owing to high pressure drop, and for the reduction valve with three valve ports, the pressure drop △ P on each valve port only is 1/3rd of single valve mouth reduction valve, according to the fluid mechanics formula
, when same flow Q, pressure reduction △ P reduces, and circulation area A just increases, and the flow velocity when namely medium is by each valve port reduces, and has so just reduced medium to the washing away of valve port, and has prevented the generation of noise, vibration or cavitation.In like manner, the present invention is when not producing the permitted value of cavitation, can significantly improve Pressure reducing ratio at every grade of pressure reduction.
When inlet pressure P1 increases or flow when reducing, outlet pressure P2 also increases, destroyed and originally acted on equilibrium of forces on the spool 7, spool 7 is under the effect of P2, and the pressure upstream direction that overcomes spring 5 moves, each valve port is turned down, like this, the flow velocity through each valve port increases the flow resistance increase, P2 namely decreases, until return to former setting value.Otherwise when inlet pressure reduction or flow increase, the aperture of each valve port increases, and makes outlet pressure return to former setting value.In like manner, when outlet pressure raises or reduce, also can make outlet pressure return to former setting value.
Claims (6)
1. one kind high Pressure reducing ratio constant pressure pressure-reducing valve has valve body, spool, it is characterized in that:
Described valve body is used with valve body two (9) by valve body one (2) and is threaded into the integral body with water intake and water outlet, and has seam to guarantee that the center line of water intake, water outlet and each endoporus is on the same straight line;
Be combined with valve seat cover (1) in the described water intake, be provided with two grooves and corresponding sword limit in the described valve seat cover endoporus, valve seat cover downstream is provided with an annular sword limit;
Said valve body (7)is a sleeve with a blind hole drill in the center , the sleeve is a stepped shaft upstream end, a downstream end having a larger diameter piston; the large end face of the stepped shaft machining a recess, equipped with seat cover blade edge with the downstream end of the annular valve (3), stepped shaft arbor with two holes Ma and seat kit with two convex ring blade edges were composed of three valves mouth; said outer piston and valve bis (9) upstream side of the slide with the cylinder, the sleeve and body outer one (2) with center hole slide.
2. high Pressure reducing ratio constant pressure pressure-reducing valve according to claim 1 is characterized in that: be provided with spring (5) between the groove of described spool (7) piston upstream side end face and valve body one (2) the center hole hole shoulder.
3. high Pressure reducing ratio constant pressure pressure-reducing valve according to claim 1 and 2, it is characterized in that: described spool (7) end is provided with some radial holes (d), and described radial hole (d) is communicated with the blind hole at center.
4. high Pressure reducing ratio constant pressure pressure-reducing valve according to claim 1 and 2 is characterized in that: between the cylinder barrel of described outside piston and valve body two (9) upstream sides and sleeve cylindrical and valve body one (2) center hole sealing surface place be provided with for reduce between the two frictional force and Ge Laiquan (8) or this special envelope (4) of frictional coefficient.
5. high Pressure reducing ratio constant pressure pressure-reducing valve according to claim 1 and 2, it is characterized in that: described valve body one (2) cylindrical is drilled with vent (a).
6. high Pressure reducing ratio constant pressure pressure-reducing valve according to claim 1 and 2, it is characterized in that: described valve body one (2) upstream extremity external diameter is provided with outside thread, described valve body two downstream internal diameters are provided with internal thread, and described screw thread is respectively applied to be connected with outlet conduit with water supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220436884.1U CN202834257U (en) | 2012-08-30 | 2012-08-30 | High pressure reducing ratio constant pressure pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220436884.1U CN202834257U (en) | 2012-08-30 | 2012-08-30 | High pressure reducing ratio constant pressure pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202834257U true CN202834257U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220436884.1U Expired - Lifetime CN202834257U (en) | 2012-08-30 | 2012-08-30 | High pressure reducing ratio constant pressure pressure-reducing valve |
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| Country | Link |
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| CN (1) | CN202834257U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398192A (en) * | 2013-07-24 | 2013-11-20 | 上海亚核阀业成套有限公司 | Novel protective valve of pump |
| CN105276250A (en) * | 2014-07-24 | 2016-01-27 | 陈俊 | Constant pressure valve with safety |
| CN105716263A (en) * | 2014-12-03 | 2016-06-29 | 广东顺德光晟电器股份有限公司 | Metal water tank electric water heater provided with water flow switch with pressure reduction function |
| CN105715840A (en) * | 2014-12-03 | 2016-06-29 | 广东顺德光晟电器股份有限公司 | Water flow switch with pressure reduction function |
| CN105716245A (en) * | 2014-12-03 | 2016-06-29 | 广东顺德光晟电器股份有限公司 | Light wave heating nonmetallic injection-molded water tank electric water heater provided with water flow sensor with pressure reducing function |
| CN106949333A (en) * | 2017-03-31 | 2017-07-14 | 中核核电运行管理有限公司 | A kind of ceramic chamber lining throttle orifice component of sherardizing steel |
| CN110107555A (en) * | 2019-05-29 | 2019-08-09 | 青岛科技大学 | A kind of built-in decompression drainage device throttle valve |
| CN112032399A (en) * | 2020-08-17 | 2020-12-04 | 浙江理工大学 | Metering test and control method for internal pressure reduction flow characteristic of labyrinth disc pressure reducing valve |
-
2012
- 2012-08-30 CN CN201220436884.1U patent/CN202834257U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398192A (en) * | 2013-07-24 | 2013-11-20 | 上海亚核阀业成套有限公司 | Novel protective valve of pump |
| CN105276250A (en) * | 2014-07-24 | 2016-01-27 | 陈俊 | Constant pressure valve with safety |
| CN105716263A (en) * | 2014-12-03 | 2016-06-29 | 广东顺德光晟电器股份有限公司 | Metal water tank electric water heater provided with water flow switch with pressure reduction function |
| CN105715840A (en) * | 2014-12-03 | 2016-06-29 | 广东顺德光晟电器股份有限公司 | Water flow switch with pressure reduction function |
| CN105716245A (en) * | 2014-12-03 | 2016-06-29 | 广东顺德光晟电器股份有限公司 | Light wave heating nonmetallic injection-molded water tank electric water heater provided with water flow sensor with pressure reducing function |
| CN106949333A (en) * | 2017-03-31 | 2017-07-14 | 中核核电运行管理有限公司 | A kind of ceramic chamber lining throttle orifice component of sherardizing steel |
| CN110107555A (en) * | 2019-05-29 | 2019-08-09 | 青岛科技大学 | A kind of built-in decompression drainage device throttle valve |
| CN110107555B (en) * | 2019-05-29 | 2024-04-05 | 青岛科技大学 | Throttle valve with built-in pressure-reducing drainage device |
| CN112032399A (en) * | 2020-08-17 | 2020-12-04 | 浙江理工大学 | Metering test and control method for internal pressure reduction flow characteristic of labyrinth disc pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
| CX01 | Expiry of patent term |