CN2080604U - Static pressure reducing valve - Google Patents
Static pressure reducing valve Download PDFInfo
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- CN2080604U CN2080604U CN 90221593 CN90221593U CN2080604U CN 2080604 U CN2080604 U CN 2080604U CN 90221593 CN90221593 CN 90221593 CN 90221593 U CN90221593 U CN 90221593U CN 2080604 U CN2080604 U CN 2080604U
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Abstract
The utility model relates to a static pressure reducing valve used for air pressure devices or hydraulic devices, which is composed of a valve body, a valve core, a spring, a water inlet valve sleeve, a water outlet valve sleeve, etc., wherein, the valve core is arranged inside an axial hole of the valve body, the upper and the lower parts of the valve body are hermetically connected with the water inlet and water outlet valve sleeves, and a ring shoulder and a square rafter bottom are arranged on the valve core. The pressure difference of air or liquid acts on the upper surface of the ring shoulder and the lower end face of a square rafter body is utilized to automatically regulate the relative separation of the square rafter bottom and a water inlet, so that a pressure reducing ratio required by users is stably obtained, and flow quantity is kept basically unchanged or slightly changed. The pressure reducing ratio required by the users can also be obtained in a static state, so that the static pressure reducing valve can also keep pressure in the static state without producing airflow reflux. The utility model has the advantages of simple and reasonable structure, and high sensitivity. The utility model can save energy source and manufacturing cost.
Description
The utility model relates to a kind of air pressure or hydraulic pressure installation of being used for and gas or liquid is carried out pressure is regulated and the proportional pressure-reducing valve of control, particularly a kind of can be according to the inlet pressure that the user required or worked out and the decompression ratio of outlet pressure, the promptly best pressure range of using and regulating, outlet pressure is remained in the required decompression ratio basicly stablely, and can keep constant substantially reduction valve in this decompression ratio down-off.
The utility model is No. 89220398, the Chinese patent application that the inventor proposed on December 16th, 1989 that continues, and exercise question is the improvement on " can regulate static pressure-reducing valve " basis.Reduction valve comprises in above-mentioned patent application, valve body, valve nozzle, spool, vavle shelf etc., valve nozzle is placed in the valve body axial bore, mangetic core assembly is made up of upper-lower seal rubber membrane etc. and is erected on the vavle shelf, because the relative spacing that constitutes between the upper-end surface of the lower end surface of slide core and valve nozzle opening can be set up automatically with effects such as inlet pressures down, can reach the decompression ratio of desired inlet pressure of user and outlet pressure, realized static decompression, static pressurize and the backflow phenomenon that does not produce gas and liquid, and has an accurate sensitivity, safe and reliable, advantages such as energy saving, but, this reduction valve flow is subjected to the influence of valve nozzle radial bore apertures and can not reaches very big, in addition because other parts of valve are many, and complex structure, Pressure reducing ratio sensitivity descends in the time of dynamically, and is difficult to realize product percent of pass.
The present invention seeks to a kind of improved static pressure-reducing valve is provided, in this valve, use newly-designed spool, the spool of former adjustable compression release valve and valve nozzle effect are integrated and enlarge the aperture of through hole in the spool and the ratio of paddle hole, reach and keeping under function that former valve has and the principle, further improve sensitivity and stability, prolong the working life of product.
Comprise a valve body according to the object of the invention static pressure-reducing valve, one spool, one spring, an one water inlet valve pocket and a water outlet valve pocket, described valve body is cylindrical, two of its outer wall is provided with joint, the top of its inwall has a convex anchor ring, have one by its extension edge and this extension edge L shaped ring seat that vertical side constituted of not holding radially near the middle part, between convex anchor ring and L shaped ring seat, be provided with the side face radial hole, described water inlet valve pocket and water outlet valve pocket all have step-like hole, the one end respectively is provided with the joint that can be fixedly connected with the joint at valve body two respectively or be connected by bolt as water inlet and osculum, and the other end is provided with the screw buckle that can be complementary and be connected with outside water inlet or outlet conduit.Described spool is a circle square rafter shape, be installed in the axial bore of valve body, it has at the bottom of a center hole that does not penetrate and the square rafter, then be respectively equipped with on the outer wall of spool with the convex anchor ring of valve body and L shaped ring seat perpendicular paste mutually one fall L shaped ring shoulder with an evagination anchor ring and constitute slipper seal each other and be connected, and they surround an annular chamber, and form tank and intake chamber are drilled with equal and opposite in direction and interlaced arrangement on the evagination anchor ring of spool and the wall between an end radial hole respectively at the bottom of the square rafter of the plane, rank of the ring of spool shoulder and water outlet valve pocket and spool with between the plane, rank of the valve pocket of intaking, described radial hole upwards is communicated with osculum by center hole, by being communicated with the water inlet by the formed chute of the inside and outside wall of valve body and spool, the section area of this radial hole and center hole generally is designed to the section area more than or equal to the water inlet pipeline downwards.In addition, lower end surface at the bottom of the described spool square rafter with the water inlet valve pocket the rank interplanar every relative, be commonly called valve nozzle portion, be subjected under gas or the liquid medium effect in the spool lower end surface, spool glides, can be involutory with the rank planar surface portion that inlet valve overlaps upside, described spring is placed in the L shaped ring seat of annular chamber and falls between the L shaped ring shoulder, and described chute section area generally is designed to more than two times of water inlet pipeline section area.
For this reason, this static pressure-reducing valve can be according to desired decompression ratio of user and flow specification, be installed on the pipeline of air pressure or hydraulic pressure installation, when gas or liquid flow into chute from the water inlet of the water inlet valve pocket of reduction valve through intake chamber, with after the radial hole of spool and center hole flow to effluent trough and osculum, at this moment, gas that enters or liquid effects are on the upper surface and the lower surface at the bottom of the square rafter of slide core ring shoulder, because the difference of area, forming pressure reduction makes valve assembly generation vibration and the trend that presses down is arranged, but be subjected to the be tightly connected reaction of surface friction drag of spring and valve body and valve core chamber, valve assembly will not be in balance, the end overcome elastic force and frictional force and moves down to make and reduce or close passage between the plane, rank of lower end surface and the valve pocket of intaking at the bottom of the spool square rafter.In general when inlet pressure is less than or equal to spring and valve body and valve core chamber and is tightly connected sum, outlet pressure or be substantially equal to inlet pressure promptly often is in and opens under the pressure.Because the import medium acts on the lower end surface at the bottom of ring shoulder upper surface and the square rafter, along with inlet pressure increases, pressure reduction is just bigger.The vibration of spool will overcome spring and valve body and the valve core chamber resistance that is tightly connected, and make spool gradually near the water inlet valve pocket the plane, rank, lower end surface at the bottom of the spool square rafter is in floats or light pressure to the water inlet of water inlet valve pocket and the top on plane, rank on every side, at this moment reach the most stable static decompression state, the outlet pressure fluctuation is minimum, and the pressure divergence value is also very little.
Yet, if being subjected to the impact in extraneous gas or liquid source, inlet pressure continues to rise, when surpassing the active force of spool ring shoulder upper surface, the lower end surface that will occur this moment at the bottom of the spool square rafter is weakened on the plane, rank around the water inlet unsteady, increased downforce simultaneously to the plane, rank, close described water inlet and carry out cushioning balance, overcome the impact of this inlet gas or liquid very soon, make valve return to original normal working.
In addition, be at input pod under the situation of static pressurize, float and the light pressure of core member changes into relative static, seals the into water inlet of water valve pocket, can make the medium of Way out can not blow back into import, produces so-called refluence phenomenon.Be at input pod under the situation of dynamic consumption pressure, core member is because the variation of above-described two pressure side differences and the elastic force of spring, spool moves that perpendicular distance slowly increases between the lower end surface that makes at the bottom of the spool square rafter and the plane, rank around the inlet valve cover water inlet on gradually, until restoring largest passages or intake chamber, the assurance peak rate of flow is passed through, thereby guarantees the stable of outlet pressure.So, use this valve to need not to close or use to transfer to valve part is set in the container conduit.
Reduction valve of the present utility model can be by used those the same material systems of prior art " can regulate static pressure-reducing valve ", also are applicable in the pipeline of many departments of indication or living facilities to use.Because this reduction valve can be regulated supply flow automatically according to user's consumption, can be stabilized in best decompression ratio again, and can both realize at gas or flow of fluid or when static, and can when medium is static, keep the constant pressure of container and when interrupting air feed or feed flow because of the import that meets accident (hole), the gas or the liquid of outlet (hole) can not return, can not cause to the damage of valve assembly or pipe fitting and to the damaging effect of environment, so it is wide that it has using scope, pressure stability, be active in one's movements, simple in structure especially, rationally, compact, durable, and can reduce the advantages such as capital cost of product cost and engineering.
Elaborate below in conjunction with accompanying drawing:
Fig. 1 is the best sectional view of implementing of the present utility model.
Static pressure-reducing valve of the present utility model comprises valve body 1, spool 2, spring 3, water inlet valve pocket 4 and water outlet valve pocket 5, has a convex anchor ring 11 on the cylindrical shell of valve body 1, an one L shaped ring seat 13 and a radial hole 12 that on the wall between L shaped ring seat 13 and the convex anchor ring 11, forms, be provided with joint two of valve bodies, this joint can be the screw section, also can be flange part.
Then spring 3 selects for use coil spring to be placed in the annular chamber 6 usually, and its two ends are resisted against down respectively on the apparent surface of L shaped ring shoulder 15 and L shaped ring seat 13.
Water inlet valve pocket 4 and outlet valve pocket 5 adopt stepped shaft in the utility model, have water inlet 27 respectively, osculum 37, and each valve pocket and valve body connecting end have joint, and joint is and valve body respective threads portion or flange part, is the screw section in the present embodiment.The free end outer wall of each valve pocket is made hexagon (not drawing among the figure), and inwall is provided with the screw thread 26,36 that is connected with external pipe.In addition, be spirally connected by joint and be installed to the lower end of valve body at water inlet valve pocket 4, between the little stage 21 of one of the lower end of valve body 1 and shoulder hole of water inlet valve pocket 4 seal ring 20 can be set, seal ring 20 is to be embedded in the caulking groove of valve body 1 underpart in the present embodiment.Water inlet valve pocket 4 also has the big stage of a shoulder hole, and its stage planar section is called plane, rank 22.Form intake chamber 24 between the lower end of the square rafter degree 18 of this plane, rank and spool.Be spirally connected by joint at water outlet valve pocket 5 and be installed to the upper end of valve body, between the little stage 31 of one of the upper end of valve body 1 and shoulder hole of water outlet valve pocket 4, seal ring 30 can be set, the internal diameter of the planar section of this little stage 31 and seal ring 30 is slightly larger than spool 2 and falls the maximum outside diameter of L shaped ring shoulder, when making spool 2 be in the valve body extreme higher position, the L shaped ring that falls takes on and anchor ring can partly lean on seal ring 30, also guarantee planar surface portion that movement position that valve when work spool 2 moves upward is controlled at the little stage 31 of water outlet valve pocket 5 to increase suddenly and be shifted malfunctioning or make spool produce bump and damage, play buffer function with the interior ratio that prevents to reduce pressure.Equally, in the big stage of water outlet valve pocket 5, its stage planar surface portion claims plane, rank 32, falls L shaped ring at plane, described rank and spool and takes on and then form tank 34 between 15 upper surfaces.
The upper and lower end face of valve body 1 or center hole keep vertical or concentric with the central axis of water inlet valve pocket 4 and water outlet valve pocket 5 in design, make higher perpendicularity and concentricity increase the steady effect of spool travel.Guarantee maximum data on flows in the size design of intake chamber 24, be chosen in peak rate of flow in the adjustable distance scope of closing the water inlet so that guarantee the lower end surface of square rafter tube 18 when reduction valve is worked and the adjustable range on plane, rank, water inlet.In addition, can on 18 lower end surface at the bottom of the square rafter of spool, offer circular groove, wherein place rubber packing volume 28 and be provided with annular boss 29 on the water intake of relative therewith water inlet valve pocket, under spool was in the water intake closing state, the rubber at the bottom of the described square rafter can cover on the boss of water inlet valve pocket.
The sectional area of valve body 1 and 2 formed chutes 7 of spool is more than two times or two times of sectional area of water inlet 27, to satisfy the needs of import peak rate of flow and flow velocity.Simultaneously, for guaranteeing to flow to center hole 17 gas or the constant or small variations of liquid stream flow of spool 2 from chute 7, with the sectional area sum of 4 radial holes 16 on the spool that chute 7 is connected should be more than or equal to the sectional area of the center hole 17 of spool.
Reduction valve of the present utility model for being designed to have low pressure reduce pressure the less power or the power that do not reduce pressure, and can design 1-20 doubly according to the ratio of practical application inlet pressure and outlet pressure, or a little bigger again.For this reason, can being designed of the upper surface area of the L shaped ring of spool 2 shoulder and its square rafter degree lower end surface area according to the Pressure reducing ratio of user's needs, ratio can the 1-20:1 scope in, 2:1 for example, 2.5:1,3:1 ... etc. the series of standards form.
This static pressure-reducing valve is according to the principle of fluidics in sum, utilize each pressure side poor, and the needs of flow and flow velocity consider that composite factor such as moving element friction consume designs, make the pressure conversion that can utilize water, oil gas body etc. self, the realization spool vibrates or moves down, automatically regulate on the position that keeps relative certain distance to float with water inlet tap or almost be harmonious and float, thereby reach under the situation of customer requirements flow realization the decompression purpose of inlet pressure.
And according to the static pressure-reducing valve of user to the specification of the needs manufacturing various sizes of flow.The continue tandem product of original 89220398.6 adjustable static pressure-reducing valve patents of the utility model, the particularly suitable tall building, the decompression of supplying water, it has simple in structure, firm, reasonable in design, guarantee that the ratio of decompression can be stabilized in again in the decompression ratio range of design outside user's the water supply flow.
The valve detection center test of table 1(Ministry of Machine-building and Electronics Industry increases condition) the static decompression characteristic of NH25 2:1.
Pressure ratio value amount flow behind the container pressure upstream pressure valve
P（mpa） P
1（mpa） P
2（mpa） P
2／P
1T／h
0.1 0.1 0.09 90％ 0
0.18 0.18 0.11 0.61 0
0.28 0.28 0.14 0.50 0
0.41 0.41 0.19 0.47 0
0.5 0.5 0.23 0.46 0
0.58 0.58 0.27 0.47 0
The decompression characteristic of table 2 attitude alive
0.18 0.1 0.049 0.49 6.6
0.28 0.16 0.078 0.487 8
0.41 0.24 0.114 0.475 9.7
0.50 0.3 0.145 0.48 10.9
0.58 0.36 0.168 0.467 12.8
0.8 0.50 0.25 0.50 16.8
1.00 0.6 0.29 0.48 18.4
Claims (5)
1, a kind of static pressure-reducing valve comprises a valve body, one spool, one spring, an one water inlet valve pocket and a water outlet valve pocket, it is characterized in that described valve body is cylindrical, two of its outer wall is provided with joint, the top of its inwall has an internal projecting ring, have one by its extension edge and this extension edge L shaped ring seat that vertical side constituted of not holding radially near the middle part, between convex anchor ring and L shaped ring seat, be provided with the side face radial hole, described water inlet valve pocket and water outlet valve pocket all have step-like hole, the one end respectively is provided with the joint that can be fixedly connected with the joint at valve body two respectively or be connected by bolt as water inlet and osculum, and the other end is provided with the screw buckle that can be complementary and be connected with outside water inlet or outlet conduit.Described spool is a circle square rafter shape, be installed in the axial bore of valve body, it has at the bottom of a center hole that does not penetrate and the square rafter, then be respectively equipped with on the outer wall of spool with the convex anchor ring of valve body and L shaped ring seat perpendicular paste mutually one fall L shaped ring shoulder with an evagination anchor ring and constitute slipper seal each other and be connected, and they surround an annular chamber, and form tank and intake chamber are drilled with equal and opposite in direction and interlaced arrangement on the evagination anchor ring of spool and the wall between an end radial hole respectively at the bottom of the square rafter of the plane, rank of the ring of spool shoulder and water outlet valve pocket and spool with between the plane, rank of the valve pocket of intaking, described radial hole upwards is communicated with osculum by center hole, downwards by being communicated with the water inlet by the formed chute of the inside and outside wall of valve body and spool, the carrier area of this radial hole and center hole generally is designed to the section area more than or equal to the water inlet pipeline, in addition, lower end surface at the bottom of the described spool square rafter with the water inlet valve pocket the rank interplanar every relative, be commonly called valve nozzle portion, be subjected under gas or the liquid medium effect in the spool lower end surface, spool glides, can be involutory with the rank planar surface portion that inlet valve overlaps upside, described spring is placed in the L shaped ring seat of annular chamber and falls between the L shaped ring shoulder, and described chute section area generally is designed to more than two times of water inlet pipeline section area.
2, reduction valve according to claim 1 is characterized in that being provided with circular groove on the lower end surface at the bottom of the square rafter of spool, lays rubber gasket in circular groove.
3, reduction valve according to claim 2 is characterized in that the distance between the plane, rank of lower end surface at the bottom of the described spool square rafter and water inlet valve pocket is chosen in the maximum inlet flow in the adjustable distance of closing.
4, reduction valve according to claim 3 is characterized in that the internal diameter of the planar section of little stage of described water outlet valve pocket and seal ring is slightly larger than the maximum outside diameter of the L shaped ring shoulder of falling of spool.
5, reduction valve according to claim 4 is characterized in that the area ratio of the upper surface area of the L shaped ring of described spool shoulder and the lower end surface at the bottom of the square rafter can be in the 1-20:1 scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221593 CN2080604U (en) | 1990-09-29 | 1990-09-29 | Static pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90221593 CN2080604U (en) | 1990-09-29 | 1990-09-29 | Static pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2080604U true CN2080604U (en) | 1991-07-10 |
Family
ID=4899703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90221593 Granted CN2080604U (en) | 1990-09-29 | 1990-09-29 | Static pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2080604U (en) |
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1990
- 1990-09-29 CN CN 90221593 patent/CN2080604U/en active Granted
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| CN105952932B (en) * | 2016-06-30 | 2018-08-31 | 江苏金荣森制冷科技有限公司 | Piston bidirectional pressure relief valve |
| CN106122545B (en) * | 2016-06-30 | 2018-11-13 | 江苏金荣森制冷科技有限公司 | The working method of hydraulic pressure bypass with adjusting flexible plunger type bidirection press relief valve |
| CN105952937B (en) * | 2016-06-30 | 2019-03-26 | 江苏金荣森制冷科技有限公司 | Protecting against shock accumulation of energy radiator with adjustable movable plug double-direction relief valve |
| CN108261710A (en) * | 2018-04-12 | 2018-07-10 | 福建省沪航消防科技有限公司 | A kind of pressure-reduced and-regulated type indoor fire hydrant |
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| CN109731702B (en) * | 2019-01-18 | 2020-06-26 | 青岛诺凯达机械制造有限公司 | Non-return device and drum for tubular separator with same |
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