CN1900572A - Automatic pressure reducing flow stable valve - Google Patents
Automatic pressure reducing flow stable valve Download PDFInfo
- Publication number
- CN1900572A CN1900572A CN 200610052580 CN200610052580A CN1900572A CN 1900572 A CN1900572 A CN 1900572A CN 200610052580 CN200610052580 CN 200610052580 CN 200610052580 A CN200610052580 A CN 200610052580A CN 1900572 A CN1900572 A CN 1900572A
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- low pressure
- hole
- seal diaphragm
- pressure seal
- spool
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Abstract
The disclosed steady flow valve includes valve body, valve core, liquid inlet, and liquid outlet. Characters are that spring cavity, inlet cavity and outlet cavity is setup in inner cavity of valve body; current limiting hole is setup between inlet cavity and outlet cavity; a through hole is setup between spring cavity and inlet cavity, and area of the through hole is larger than area of the current limiting hole; elastic seal membrane piece is at left side of the through hole, moveable piston withstands left side of the elastic seal membrane piece, and compression spring is at left side of the moveable piston; push rod withstands right end of the valve core; the seal membrane piece provides thrust force for the push rod, and thrust force of the seal membrane piece is from liquid pressure at liquid outlet cavity. The steady flow valve reduces pressure at output end and stabilizes flux. The valve is suitable to matching water heater and equipment needed decompression and steady flow.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of automatic pressure reducing flow stable valve with reduction outlet end pressure and regime flow function.
Background technique
The effect of common valve is the opening and closing fluid line, and its control to flow is controlled by the aperture of regulating valve.But in actual use, the hydrodynamic pressure of valve inlet end is also unstable usually, thereby its flow is also also unstable, and in most use occasions, the hydrodynamic pressure of the valve inlet end hydrodynamic pressure of fluid supply tube net in other words is usually higher and be not easy to direct use, and the delivery pressure of common valve outlet end is common and flow is directly related, particularly be to say flow greatly then decompression is little, delivery pressure is big, otherwise then little.Therefore, common valve can not satisfy the requirement of some special occasions.
A common example is the valve that water heater is used.Water heater has belonged to popular Family Day electric consumer at present, and its main effect in the family is to supply to have a bath to use hot water.The height of its water temperature generally is that the flow size that the aisle spare by regulating valve changes water realizes, but because the hydraulic pressure in the public water pipe network and unstable, thereby under the situation that the valve regulated knob position is fixed, wherein the size of water flow is also also unstable, thereby directly cause the temperature of hot water fluctuated, cause the user to need frequent regulating valve and very it is tired.Under the too big situation of the water pressure fluctuations of public water pipe network, even influence the normal use of water heater.Based on this, the someone has developed tool pressure regulation current stabilization effect valve and has been used for water heater, as Chinese patent 91204831.X disclosed " water heater pressure regulator valve ".In addition, also be useful on the valve with similar functions of other purposes, as Chinese patent 96219247.0 disclosed " decompression venting valve ", Chinese patent 01262647.3 disclosed " horizontal permanent-flow valve reduces pressure " and Chinese patent 00221412.1 disclosed " full-automatic constant current reduction valve " etc.
Summary of the invention
Technical problem to be solved by this invention is a kind of automatic pressure reducing flow stable valve with reduction outlet end pressure and regime flow function of exploitation.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: this automatic pressure reducing flow stable valve, it has valve body, spool, the valve body middle part is provided with fluid inlet and fluid output, it is characterized in that described body cavity is provided with spring chamber from left to right, the fluid inlet chamber corresponding with described fluid inlet reaches the fluid output chamber corresponding with described fluid output; Be provided with metering hole between fluid inlet chamber and the fluid output chamber, be provided with through hole between spring chamber and the fluid inlet chamber, and the area of through hole is greater than the area of metering hole; Described spool stretches into body cavity and is assemblied in the body cavity from the right-hand member of valve body, the left end of spool passes metering hole and through hole and is against the right side of elastic packing diaphragm, spool is provided with large-diameter portion, the right side that this large-diameter portion is positioned at metering hole nearby and its size greater than the size of metering hole; The right side of elastic packing diaphragm is limited in described through hole and takes on outward, and its left side is then located at its peripheral sealing film bar by clinching, and the left side of sealing film bar is then by the fastening body location that is screwed onto in the valve body spring chamber; Be provided with mobile piston in the inner chamber of sealing film bar, the right side of mobile piston is close to the left side of elastic packing diaphragm, and its left side is then propped up by the spring seat that is arranged in the fastening body inner chamber; The left end of valve body is bolted with adjusting knob, is provided with pressure spring between adjusting knob and the spring seat; The valve body right-hand member is bolted with low pressure seal diaphragm seat pedestal, and flap is fixed and be connected with hermetically to the right-hand member of low pressure seal diaphragm seat pedestal; Be provided with the flexible low pressure seal diaphragm of tool between low pressure seal diaphragm seat pedestal and the flap, thereby form two independently spaces in the left and right sides of low pressure seal diaphragm, wherein the space on right side is an enclosed space, and the space in left side then communicates with ambient atmosphere by the gas port of opening on low pressure seal diaphragm seat pedestal; The left side of low pressure seal diaphragm has ram seat; Also including can be with respect to the push rod of low pressure seal diaphragm seat pedestal move left and right, the right-hand member of push rod is limited in ram seat, its left end then passes low pressure seal diaphragm seat pedestal and is against the right-hand member of spool, is provided with seal ring between push rod and the low pressure seal diaphragm seat pedestal; Also include the fluid course that connects fluid output chamber and described low pressure seal diaphragm right side enclosed space.
The elastic force adjusting excursion of turriform spring is big, helps obtaining the bigger valve of flow adjustable extent, therefore the preferred turriform spring of described pressure spring.
Described fluid inlet place is provided with filter screen.
Described runner comprises the space between the duct that is located on the described spool, described spool and the described low pressure seal diaphragm seat pedestal and is located at duct on the described low pressure seal diaphragm seat pedestal.
The aperture of the right-hand member of described fastening body is less than the size of described mobile piston.Such design helps guaranteeing the residing position of mobile piston.
For the valve that is applied to water heater and Yan Eryan, according to its general required traffic requirement, described fastening body right-hand member end to the distance of the outer shoulder of described through hole is advisable with the big 1.5～2.5mm of axial thickness than described mobile piston, correspondingly, the left side of the large-diameter portion of described spool to the ultimate range of described metering hole right-hand member is 1.5～2.5mm.
Usually, the pressure in fluid output chamber can give spool enough thrust much smaller than the pressure of fluid inlet chamber for making push rod, and the left side area of the enclosed space on described low pressure seal diaphragm right side is advisable with the section area greater than described valve body.
The center of described low pressure seal diaphragm seat pedestal is provided with interior threaded hole, be bolted with the packing holder of tape spool in the interior threaded hole to center hole, the left end of described push rod promptly passes this center hole and is against the right-hand member of described spool, and is equipped with seal ring between described low pressure seal diaphragm seat pedestal and packing holder, packing holder and the described push rod.Such design helps making processing.
Compared with prior art, the invention has the advantages that:
1, the adjusting knob position of valve left end and fluid output aperture are once fixing, and then the rate of discharge of valve keeps stable automatically, and because of the variation of fluid inlet pressure big variation are not arranged.Its reason is, when fluid inlet pressure becomes big, because the area of valve body inner via hole is greater than the area of metering hole, therefore, fluid to the pressure of flexible sheet greater than the pressure of fluid to the spool large-diameter portion, therefore total effect is to promote the elastic force that flexible sheet overcomes pressure spring to be moved to the left, spool promptly moves to left under the push rod effect, make the gap smaller between metering hole and the spool large-diameter portion, thereby keep the stable of flow, and, because gap smaller has increased flow resistance, therefore, the pressure in fluid output chamber also remains unchanged substantially.Otherwise inlet pressure diminishes, and then the gap between metering hole and the spool large-diameter portion becomes big, and same, it is stable that flow still keeps, and outlet pressure remains unchanged substantially.With the valve that is used for water heater is example, the sample that the claimant makes at inlet pressure from 0.5Kg/cm
2Be changed to 3Kg/cm
2Process in, the variation of flow remains in 3%, the variation of outlet pressure is also very little.
2, adopt described low pressure seal diaphragm to promote push rod, for spring, when having following advantage: a, inlet pressure to become big, pressure has a little usually and increases in the outlet plenum, therefore, described low pressure seal diaphragm will strengthen the pressure of push rod, be moved to the left to reduce the gap between metering hole and the spool large-diameter portion thereby will promote spool; Otherwise, then help to increase the gap; We can say to have the effect that synchronous change is big, diminish; And if the employing spring then needs when moving to left at spool, the elastic force of spring can diminish along with moving to left of spool on the contrary, otherwise, then become big, thereby do not reach the effect that synchronous change is big, diminish.B, help regulating rate of discharge, but the rate of discharge of valve has bigger adjustable extent.Its reason is, the outlet aperture is transferred when big, and the pressure in fluid output chamber can diminish comparatively speaking, and the diminishing of fluid output cavity pressure, described low pressure seal diaphragm is diminished to the pressure of push rod, thereby the gap between metering hole and the spool large-diameter portion is increased, on the contrary gap smaller then.
3, designed mobile piston, and the left end of mobile piston is spacing by fastening body, in the time of can effectively preventing to take off pressure spring and operation such as change, the elastic packing diaphragm is damaged by pressure by internal pressure.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the embodiment of the invention one.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment
As schematically shown in Figure 1, be a preferred embodiment of the present invention.As shown in the figure, the present embodiment automatic pressure reducing flow stable valve, it has valve body 1, spool 2, and valve body 1 middle part is provided with fluid inlet 3 and fluid output 4.Fluid inlet 3 places are provided with filter screen 5.Valve body 1 inner chamber is provided with spring chamber 6, the fluid inlet chamber 7 corresponding with described fluid inlet 3 and the fluid output chamber 8 corresponding with described fluid output 4 from left to right.Be provided with metering hole 9 between fluid inlet chamber 7 and the fluid output chamber 8, be provided with through hole 10 between spring chamber 6 and the fluid inlet chamber 7, and the diameter of through hole 10 be greater than the diameter of metering hole 9.Spool 2 stretches into valve body 1 inner chamber and is assemblied in valve body 1 inner chamber from the right-hand member of valve body 1, the left end of spool 2 passes metering hole 9 and through hole 10 and is against the right side of elastic packing diaphragm 11, the middle part of spool 2 is provided with large-diameter portion 2a, the right side that this large-diameter portion 2a is positioned at metering hole 9 nearby and its diameter greater than the diameter of metering hole 9.The right side of elastic packing diaphragm 11 is limited in described through hole 10 outer shoulders, and its left side is then located at its peripheral sealing film bar 12 by clinching, and the left side of sealing film bar 12 is then by fastening body 13 location that are screwed onto in the valve body spring chamber 6.Be provided with mobile piston 14 in the inner chamber of sealing film bar 12, the right side of mobile piston 14 is close to the left side of elastic packing diaphragm 11, and its left side is then propped up by the spring seat 15 that is arranged in fastening body 13 inner chambers.The left end of valve body 1 is bolted with adjusting knob 16, is provided with turriform pressure spring 17 between adjusting knob 16 and the spring seat 15.Valve body 1 right-hand member is bolted with low pressure seal diaphragm seat pedestal 18 by internal thread, and flap 19 is fixed and be connected with hermetically to the right-hand member of low pressure seal diaphragm seat pedestal 18.Be provided with the flexible low pressure seal diaphragm 20 of tool between low pressure seal diaphragm seat pedestal 18 and the flap 19, thereby form two independently spaces in the left and right sides of low pressure seal diaphragm 20, wherein the space on right side is an enclosed space, and the space in left side then communicates with ambient atmosphere by the gas port of opening on low pressure seal diaphragm seat pedestal 18 25.The left side of low pressure seal diaphragm 20 has ram seat 21.Also including can be with respect to the push rod 22 of low pressure seal diaphragm seat pedestal 18 move left and right, the right-hand member of push rod 22 is limited in ram seat 21, the center of described low pressure seal diaphragm seat pedestal 18 is provided with interior threaded hole, be bolted with the packing holder 23 of tape spool in the interior threaded hole to center hole, the left end of described push rod 22 promptly passes this center hole and the right-hand member of the spool 2 that is against, and is equipped with seal ring between described low pressure seal diaphragm seat pedestal 18 and packing holder 23, packing holder 23 and the described push rod 22.Also include the fluid course that connects fluid output chamber 8 and described low pressure seal diaphragm 20 right side enclosed spaces, runner by the space 24 between the duct 2b, described spool 2 and the described low pressure seal diaphragm seat pedestal 18 that are located on the described spool 2, be located at the duct 18a on the described low pressure seal diaphragm seat pedestal 18 and the duct 19a that is located on the described flap 19 forms.
In addition, the diameter of described mobile piston 14 is greater than the diameter in the hole of the right-hand member of fastening body 13.Described fastening body 13 right-hand member ends are to the axial thickness big 2mm of the described through hole 10 outer distances of takeing on than described mobile piston 14.The left side of the large-diameter portion 2a of described spool 2 to the ultimate range of described metering hole 9 right-hand members is 2mm.The left side area of the enclosed space on described low pressure seal diaphragm 20 right sides is greater than the section area of described valve body 1.
Claims (9)
1, a kind of automatic pressure reducing flow stable valve, it has valve body, spool, the valve body middle part is provided with fluid inlet and fluid output, it is characterized in that described body cavity is provided with spring chamber from left to right, the fluid inlet chamber corresponding with described fluid inlet reaches the fluid output chamber corresponding with described fluid output; Be provided with metering hole between fluid inlet chamber and the fluid output chamber, be provided with through hole between spring chamber and the fluid inlet chamber, and the area of through hole is greater than the area of metering hole; Described spool stretches into body cavity and is assemblied in the body cavity from the right-hand member of valve body, the left end of spool passes metering hole and through hole and is against the right side of elastic packing diaphragm, spool is provided with large-diameter portion, the right side that this large-diameter portion is positioned at metering hole nearby and its size greater than the size of metering hole; The right side of elastic packing diaphragm is limited in described through hole and takes on outward, and its left side is then located at its peripheral sealing film bar by clinching, and the left side of sealing film bar is then by the fastening body location that is screwed onto in the valve body spring chamber; Be provided with mobile piston in the inner chamber of sealing film bar, the right side of mobile piston is close to the left side of elastic packing diaphragm, and its left side is then propped up by the spring seat that is arranged in the fastening body inner chamber; The left end of valve body is bolted with adjusting knob, is provided with pressure spring between adjusting knob and the spring seat; The valve body right-hand member is bolted with low pressure seal diaphragm seat pedestal, and flap is fixed and be connected with hermetically to the right-hand member of low pressure seal diaphragm seat pedestal; Be provided with the flexible low pressure seal diaphragm of tool between low pressure seal diaphragm seat pedestal and the flap, thereby form two independently spaces in the left and right sides of low pressure seal diaphragm, wherein the space on right side is an enclosed space, and the space in left side then communicates with ambient atmosphere by the gas port of opening on low pressure seal diaphragm seat pedestal; The left side of low pressure seal diaphragm has ram seat; Also including can be with respect to the push rod of low pressure seal diaphragm seat pedestal move left and right, the right-hand member of push rod is limited in ram seat, its left end then passes low pressure seal diaphragm seat pedestal and is against the right-hand member of spool, is provided with seal ring between push rod and the low pressure seal diaphragm seat pedestal; Also include the fluid course that connects fluid output chamber and described low pressure seal diaphragm right side enclosed space.
2, automatic pressure reducing flow stable valve according to claim 1 is characterized in that described pressure spring is the turriform spring.
3, automatic pressure reducing flow stable valve according to claim 1 and 2 is characterized in that described fluid inlet place is provided with filter screen.
4, automatic pressure reducing flow stable valve according to claim 1 and 2 is characterized in that described runner comprises the space between the duct that is located on the described spool, described spool and the described low pressure seal diaphragm seat pedestal and is located at duct on the described low pressure seal diaphragm seat pedestal.
5, automatic pressure reducing flow stable valve according to claim 1 and 2, the aperture of right-hand member that it is characterized in that described fastening body is less than the size of described mobile piston.
6, automatic pressure reducing flow stable valve according to claim 1 and 2 is characterized in that described fastening body right-hand member end is to the axial thickness big 1.5～2.5mm of the outer distance of takeing on of described through hole than described mobile piston.
7, automatic pressure reducing flow stable valve according to claim 6 is characterized in that left side to the ultimate range of described metering hole right-hand member of the large-diameter portion of described spool is 1.5～2.5mm.
8, automatic pressure reducing flow stable valve according to claim 1 and 2, the left side area of enclosed space that it is characterized in that described low pressure seal diaphragm right side is greater than the section area of described valve body.
9, automatic pressure reducing flow stable valve according to claim 1 and 2, the center that it is characterized in that described low pressure seal diaphragm seat pedestal is provided with interior threaded hole, be bolted with the packing holder of tape spool in the interior threaded hole to center hole, the left end of described push rod promptly passes this center hole and is against the right-hand member of described spool, and is equipped with seal ring between described low pressure seal diaphragm seat pedestal and packing holder, packing holder and the described push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100525804A CN100408899C (en) | 2006-07-21 | 2006-07-21 | Automatic pressure reducing flow stable valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100525804A CN100408899C (en) | 2006-07-21 | 2006-07-21 | Automatic pressure reducing flow stable valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1900572A true CN1900572A (en) | 2007-01-24 |
| CN100408899C CN100408899C (en) | 2008-08-06 |
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ID=37656514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100525804A Expired - Fee Related CN100408899C (en) | 2006-07-21 | 2006-07-21 | Automatic pressure reducing flow stable valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN100408899C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251645A (en) * | 2015-11-24 | 2016-01-20 | 温岭市锦鹏日用品有限公司 | Convenient-to-maintain water heater water outlet sprayer component |
| CN110131454A (en) * | 2019-06-05 | 2019-08-16 | 浙江埃泰克环境科技有限公司 | A kind of Constant flow sample flow-limiting valve |
| CN111364957A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Miniaturized constant-current water distribution structure and detection device thereof |
| CN111779662A (en) * | 2020-07-14 | 2020-10-16 | 王伟权 | Water quantity control device for water supply pump |
| CN113203557A (en) * | 2021-03-25 | 2021-08-03 | 北京精密机电控制设备研究所 | Test equipment for natural storage life test of sealing diaphragm |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2186717B (en) * | 1986-03-06 | 1990-05-30 | Vinnitsky Pk T I Gidroagregato | Pressure regulator |
| CN2436741Y (en) * | 2000-06-11 | 2001-06-27 | 田耀刚 | Pressure-reducing valve |
| CN2530117Y (en) * | 2002-03-04 | 2003-01-08 | 杨叶 | Gas compressor governor |
| JP2005165667A (en) * | 2003-12-02 | 2005-06-23 | Toyoda Mach Works Ltd | Regulator |
| CN200946707Y (en) * | 2006-07-21 | 2007-09-12 | 王海平 | Decompression steady flow valve |
-
2006
- 2006-07-21 CN CNB2006100525804A patent/CN100408899C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251645A (en) * | 2015-11-24 | 2016-01-20 | 温岭市锦鹏日用品有限公司 | Convenient-to-maintain water heater water outlet sprayer component |
| CN110131454A (en) * | 2019-06-05 | 2019-08-16 | 浙江埃泰克环境科技有限公司 | A kind of Constant flow sample flow-limiting valve |
| CN110131454B (en) * | 2019-06-05 | 2024-05-10 | 浙江埃泰克环境科技有限公司 | Constant-current sampling flow limiting valve |
| CN111364957A (en) * | 2020-04-09 | 2020-07-03 | 中国石油天然气股份有限公司 | Miniaturized constant-current water distribution structure and detection device thereof |
| CN111364957B (en) * | 2020-04-09 | 2024-03-01 | 中国石油天然气股份有限公司 | Miniaturized constant-current water distribution structure and detection device thereof |
| CN111779662A (en) * | 2020-07-14 | 2020-10-16 | 王伟权 | Water quantity control device for water supply pump |
| CN111779662B (en) * | 2020-07-14 | 2022-04-12 | 深圳市效利工程设备有限公司 | Water quantity control device for water supply pump |
| CN113203557A (en) * | 2021-03-25 | 2021-08-03 | 北京精密机电控制设备研究所 | Test equipment for natural storage life test of sealing diaphragm |
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| Publication number | Publication date |
|---|---|
| CN100408899C (en) | 2008-08-06 |
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Granted publication date: 20080806 |