CN102913653A - Micro-flow cutting valve with function of improving metering precision - Google Patents
Micro-flow cutting valve with function of improving metering precision Download PDFInfo
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- CN102913653A CN102913653A CN2012104114712A CN201210411471A CN102913653A CN 102913653 A CN102913653 A CN 102913653A CN 2012104114712 A CN2012104114712 A CN 2012104114712A CN 201210411471 A CN201210411471 A CN 201210411471A CN 102913653 A CN102913653 A CN 102913653A
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Abstract
The invention discloses a micro-flow cutting valve with a function of improving the metering precision. The invention relates to a spring valve, aiming at solving the problem that small flow quantity abnormality such as water droplet which is common in living water cannot be metered and precisely metering the small flow of the water use. An annular shoulder is arranged on the inner surface of the front end of a valve body; a front guide shaft and a rear guide shaft are respectively arranged at the front end surface and the rear end surface of a columnar slide valve; and the shafts and the columnar slide valve are at the same coaxial inner conductor; the front guide shaft threads into a front guide sleeve; the front guide sleeve is fixed at the inner wall of the valve body through a bracket; a rubber sealing pad is fixed at the front end surface of the columnar slide valve and is adhered to the annular shoulder; the rear guide shaft threads into a rear guide sleeve; the rear guide sleeve is fixed at the inner wall of the valve body through the bracket; a limiting shoulder is arranged at the inner surface of the rear end of the valve body; an annular waterflowing trough is formed in the inner wall of the valve body between the limiting shoulder and the columnar slide valve; and a compressed spring threads into the shaft body of the rear guide shaft and is arranged between the columnar slide valve and the rear guide sleeve.
Description
Technical field
The present invention relates to a kind of spring valve, be specifically related to the accurate metering valve of one way of life water small flow, belong to micrometeor accurate measurement field.
Background technique
China is the country of an arid, lack of water.Water resources only has 2200 cubic metres per capita, only is 1/4 of world average level.After setting up " Every household has an ammeter ", the poor increase of many regional water supply production and marketing is further obvious on the contrary, invalid water supply even surpassed for 10% of water inventory, and one of the main reasons causes because of the unusual water of the small flows such as water dripping.The initial-flow that present general usual speed formula B level water meter begins to measure is all at 6-8L/h, the tap water of water clock can not be by water meter measurement, water clock speed with 6L/h is calculated, more than 50 cubic metre of tap water of the annual water clock of single tap water user, this is a beyond doubt extremely huge loss for water resources and insufficient China.
Summary of the invention
The purpose of this invention is to provide a kind of fine bourn cut-off valve that can improve measuring accuracy, to solve the problem that the common unusual water of the small flows such as water dripping can't be measured in the domestic water.
It comprises valve body 14, cylindricality guiding valve 1, Compress Spring 2, front guide sleeve 3, the front axis of guide 4, the rear axis of guide 15, rubber gasket 5 and rear guide sleeve 8, be provided with annular shoulder 14-1 on the front end internal surface of valve body 14, the front axis of guide 4 and the rear axis of guide 15 are separately positioned on the front-end face of cylindricality guiding valve 1 and the ear end face and three's coaxial inner conductor, the front axis of guide 4 is through in the front guide sleeve 3, front guide sleeve 3 is fixed on the inwall of valve body 14 by support, rubber gasket 5 is fixed on the front-end face of cylindricality guiding valve 1 and with annular shoulder 14-1 and reclines mutually, the rear axis of guide 15 is through in the rear guide sleeve 8, rear guide sleeve 8 is fixed on the inwall of valve body 14 by support, be provided with spacing shoulder 14-2 on the rear end internal surface of valve body 14, have annular on valve body 14 inwalls between spacing shoulder 14-2 and the cylindricality guiding valve 1 and cross tank 17, Compress Spring 2 is through on the axis body of the rear axis of guide 15 and between cylindricality guiding valve 1 and rear guide sleeve 8.
Device of the present invention is arranged on the water pipeline that measure water-meter is installed, its working principle is: the current of small flow are blocked by the rubber gasket 5 of cylindricality guiding valve 1 front end and the sealing surface that annular shoulder 14-1 forms, after continuous rill water gaging builds up to certain water yield, caused the variation of cylindricality guiding valve 1 front and back pressure difference, pressure difference promotes cylindricality guiding valve 1 and moves, current are by sealing surface, but current at this time can promote the measure water-meter action, thereby can be measured.Above-mentioned working principle with continuous rill accumulative total to the continuously large flow that reaches the measure water-meter initial-flow by water meter and be measured, realized improving the purpose of accuracy of water meter; The present invention has simple in structure, stablize durable, successful, Non-energy-consumption, the advantage such as cost is low.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention, Fig. 2 is the pipeline schematic diagram in normal water flowing stage, Fig. 3 is the schematic diagram of pipeline dwell period, Fig. 4 is the schematic diagram of water dripping phase I, Fig. 5 is the schematic diagram of water dripping second stage, Fig. 6 was the schematic diagram in water stage, and Fig. 7 is the schematic diagram in recovery stage.
Embodiment
Embodiment one: specify present embodiment below in conjunction with Fig. 1.Present embodiment comprises valve body 14, cylindricality guiding valve 1, Compress Spring 2, front guide sleeve 3, the front axis of guide 4, the rear axis of guide 15, rubber gasket 5 and rear guide sleeve 8, be provided with annular shoulder 14-1 on the front end internal surface of valve body 14, the front axis of guide 4 and the rear axis of guide 15 are separately positioned on the front-end face of cylindricality guiding valve 1 and the ear end face and three's coaxial inner conductor, the front axis of guide 4 is through in the front guide sleeve 3, front guide sleeve 3 is fixed on the inwall of valve body 14 by support, rubber gasket 5 is fixed on the front-end face of cylindricality guiding valve 1 and with annular shoulder 14-1 and reclines mutually, the rear axis of guide 15 is through in the rear guide sleeve 8, rear guide sleeve 8 is fixed on the inwall of valve body 14 by support, be provided with spacing shoulder 14-2 on the rear end internal surface of valve body 14, have annular on valve body 14 inwalls between spacing shoulder 14-2 and the cylindricality guiding valve 1 and cross tank 17, Compress Spring 2 is through on the axis body of the rear axis of guide 15 and between cylindricality guiding valve 1 and rear guide sleeve 8.
Embodiment two: specify present embodiment below in conjunction with Fig. 1.The difference of present embodiment and mode of execution one is that it also comprises O RunddichtringO 6, and described O RunddichtringO 6 ring sets are on the external peripheral surface of valve body 14.So arrange, can improve the seal degree between valve body 14 and the cylindricality guiding valve 1.
Embodiment three: specify present embodiment below in conjunction with Fig. 1.The difference of present embodiment and mode of execution one is that it also comprises spring planet 9, and spring planet 9 is enclosed within on the axis body of the rear axis of guide 15 and between rear guide sleeve 8 and Compress Spring 2.Can regulate the pretightening force of Compress Spring 2 by spring planet 9.
Embodiment four: specify present embodiment below in conjunction with Fig. 1.The difference of present embodiment and mode of execution one is that it comprises that also it also comprises water pipe loose joint 10, and water pipe loose joint 10 is connected to the end, rear end of valve body 14.The present invention so is set by linking to each other with water pipeline with water pipe loose joint 10, can reaches the purpose of convenient assembling and disassembling.
Working principle of the present invention:
By the differential water pressures at cylindricality guiding valve 1 two ends and the elastic force control valve switch of Compress Spring 2, the unmeasurable water dripping of measure water-meter is added to certain amount, can the be measured large strand current of one-tenth thigh of water meter measurement of formation once pass through, be about to continuous rill and change the large stream of interruption into, thereby reach the purpose of accurate measurement water dripping.
In conjunction with Fig. 2 to Fig. 7 working principle is described, the valve water (flow) direction is seen shown in the figure and is anticipated.Apparatus of the present invention are installed in measure water-meter water intake front end, link to each other with measure water-meter.
Such as Fig. 2, during normal water flowing, water flow is greater than 6L/h, because cylindricality guiding valve 1 front end and back end differential water pressures is greater than Compress Spring 2, the cylindricality guiding valve is depressed into annular and crosses tank 17, relies on impulsive force to keep motionless, the current normal flow is crossed and by water meter measurement, can not exerted an influence to use.
Such as Fig. 3, during valve closing, because cylindricality guiding valve 1 front end and back end differential water pressures is less than Compress Spring 2 elastic force, Compress Spring 2 pushes back the cylindricality guiding valve to annular shoulder 14-1 place, this moment, spring force was greater than cylindricality guiding valve two ends hydraulic pressure pressure difference, rely on rubber gasket 5 and annular shoulder 14-1 on the cylindricality guiding valve 1 tight pressing that is stuck to play the effect of water-tight, water can't pass through the cylindricality guiding valve, accumulates at the valve front end.
Such as Fig. 4, water dripping during valve closing, along with increasing of water dripping, the water yield reduces gradually behind the valve, cylindricality guiding valve 1 front end and back end differential water pressures increases, but at a period of time inner spring elastic force still greater than cylindricality guiding valve two ends differential water pressures, the cylindricality guiding valve is still at initial position, rely on rubber gasket 5 and annular shoulder 14-1 on the cylindricality guiding valve 1 tight pressing that is stuck to play the effect of water-tight, the water of cylindricality guiding valve 1 front end can't flow through, the water of plug rear end reduces with water clock, and pressure difference increases before and after the plug.
Such as Fig. 5, along with increasing that water droplet leaks, cylindricality guiding valve 1 front end and back end differential water pressures constantly increases, until plug front and back differential water pressures is greater than spring force, cylindricality guiding valve 1 is passed forward, be called critical stroke at this section stroke that arrives before annular is crossed tank 17, in critical stroke, cylindricality guiding valve 1 relies on the effect of playing water-tight that fits tightly of O RunddichtringO 6 and valve body 14 inwalls, current still can't pass through, the continuous water clock of water behind the cylindricality guiding valve 1, differential water pressures constantly increases, and cylindricality guiding valve 1 is passed until annular is crossed tank 17.
Such as Fig. 6, water clock along with water, cylindricality guiding valve 1 is constantly passed, and the cylindricality guiding valve 1 critical stroke of passing by arrives annular and crosses tank 17, this moment, O RunddichtringO 6 broke away from the valve inwall, can not water-tight, the water yield of cylindricality guiding valve 1 rear end accumulation becomes rapidly large plume mistake, and its flow is greater than B level water meter initial-flow 6L/h, the water that flows through is reached the accurately purpose of metering of small flow by water meter measurement.
Such as Fig. 7, along with the water yield of accumulating flows through, the differential water pressures at cylindricality guiding valve 1 two ends constantly reduces, finally less than Compress Spring 2 elastic force, cylindricality guiding valve 1 is pushed back to annular shoulder 14-1 place, the tight pressing water-tight that the rubber gasket 5 on the dependence cylindricality guiding valve 1 and annular shoulder 14-1 block, and water can't pass through the cylindricality guiding valve, a circulation finishes, and goes round and begins again.
Claims (4)
1. can improve the fine bourn cut-off valve of measuring accuracy, it is characterized in that it comprises valve body (14), cylindricality guiding valve (1), Compress Spring (2), front guide sleeve (3), the front axis of guide (4), the rear axis of guide (15), rubber gasket (5) and rear guide sleeve (8), be provided with annular shoulder (14-1) on the front end internal surface of valve body (14), the front axis of guide (4) and the rear axis of guide (15) are separately positioned on the front-end face of cylindricality guiding valve (1) and the ear end face and three's coaxial inner conductor, the front axis of guide (4) is through in the front guide sleeve (3), front guide sleeve (3) is fixed on the inwall of valve body (14) by support, rubber gasket (5) is fixed on the front-end face of cylindricality guiding valve (1) and with annular shoulder (14-1) and reclines mutually, the rear axis of guide (15) is through in the rear guide sleeve (8), rear guide sleeve (8) is fixed on the inwall of valve body (14) by support, be provided with spacing shoulder (14-2) on the rear end internal surface of valve body (14), have annular on valve body (14) inwall between spacing shoulder (14-2) and the cylindricality guiding valve (1) and cross tank (17), Compress Spring (2) is through on the axis body of the rear axis of guide (15) and is positioned between cylindricality guiding valve (1) and the rear guide sleeve (8).
2. the fine bourn cut-off valve that can improve measuring accuracy according to claim 1 is characterized in that it also comprises O RunddichtringO (6), and described O RunddichtringO (6) ring set is on the external peripheral surface of valve body (14).。
3. the fine bourn cut-off valve that can improve measuring accuracy according to claim 1, it is characterized in that it also comprises spring planet (9), spring planet (9) is enclosed within on the axis body of the rear axis of guide (15) and is positioned between rear guide sleeve (8) and the Compress Spring (2).
4. the fine bourn cut-off valve that can improve measuring accuracy according to claim 1 is characterized in that it comprises that also it also comprises water pipe loose joint (10), and water pipe loose joint (10) is connected to the end, rear end of valve body (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411471.2A CN102913653B (en) | 2012-10-24 | 2012-10-24 | Micro-flow cutting valve with function of improving metering precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411471.2A CN102913653B (en) | 2012-10-24 | 2012-10-24 | Micro-flow cutting valve with function of improving metering precision |
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| Publication Number | Publication Date |
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| CN102913653A true CN102913653A (en) | 2013-02-06 |
| CN102913653B CN102913653B (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210411471.2A Active CN102913653B (en) | 2012-10-24 | 2012-10-24 | Micro-flow cutting valve with function of improving metering precision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673894A (en) * | 2016-04-15 | 2016-06-15 | 上海厚守工业科技有限公司 | Gas flow blocking valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2603887Y (en) * | 2003-03-11 | 2004-02-18 | 宋铁斌 | Water economizer |
| CN201083287Y (en) * | 2007-08-08 | 2008-07-09 | 周宏远 | Closed body piston universal check valve |
| CN102650342A (en) * | 2011-02-24 | 2012-08-29 | 自贡新地佩尔阀门有限公司 | Piston type compound sealing axial flow type check valve |
-
2012
- 2012-10-24 CN CN201210411471.2A patent/CN102913653B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2603887Y (en) * | 2003-03-11 | 2004-02-18 | 宋铁斌 | Water economizer |
| CN201083287Y (en) * | 2007-08-08 | 2008-07-09 | 周宏远 | Closed body piston universal check valve |
| CN102650342A (en) * | 2011-02-24 | 2012-08-29 | 自贡新地佩尔阀门有限公司 | Piston type compound sealing axial flow type check valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673894A (en) * | 2016-04-15 | 2016-06-15 | 上海厚守工业科技有限公司 | Gas flow blocking valve |
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| Publication number | Publication date |
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| CN102913653B (en) | 2014-09-17 |
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