CN102900890B - Bridged water hammer prevention valve group with filtering and backflushing functions - Google Patents
Bridged water hammer prevention valve group with filtering and backflushing functions Download PDFInfo
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- CN102900890B CN102900890B CN201210385448.0A CN201210385448A CN102900890B CN 102900890 B CN102900890 B CN 102900890B CN 201210385448 A CN201210385448 A CN 201210385448A CN 102900890 B CN102900890 B CN 102900890B
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- exhaust valve
- water hammer
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Abstract
The invention discloses a bridged water hammer prevention valve group with filtering and backflushing functions. The bridged water hammer prevention valve group comprise a main air exhaust valve and a buffer valve group connected with an inlet of the main air exhaust valve, wherein a filtering net is arranged between the inlet of the main air exhaust valve and the buffer valve group; a reverse water inlet is formed in a valve body at an inlet end of an overhauling valve; a sundry outlet is formed in a valve body at an outlet end of the overhauling valve; a micro-air exhaust valve and the reverse water outlet are communicated with a cavity of a body of the main air exhaust valve at the rear end of the filtering net through a pipeline; the buffer valve group comprises a buffer plate and throttling holes; back flow of a water column is restricted by the buffer plate and the throttling holes, a phenomenon that the water column is bridged and impacted is avoided, and a bridged water hammer is fundamentally eliminated; and water in the pipeline is reversely connected to the reverse backflushing filtering net in the main air exhaust valve through the reverse water inlet in the overhauling valve, and sundries in a filtering net filtering pipeline between the inlet of the main air exhaust valve and an outlet of the overhauling valve are discharged from the sundry outlet through the pipeline, so that a function of preventing blockage is realized.
Description
Technical field
The invention belongs to the outlet valve in pipeline, be specifically related to a kind of composite exhaust valve.
Background technique
Composite exhaust valve comprises the valve body of vertical runner at present, connects valve gap on valve body, and valve body is established bracket, and bracket is provided with ball float, and the runner hole wall of valve gap is provided with the sealing pair between ball float, and the top of valve body is connected with micro-exhaust valve.In the time of a large amount of exhaust of main exhaust valve, because pipeline supplies water initial stage current in acceleration mode, this state pressurized air makes outlet valve enter a large amount of exhausts, in the time that flow velocity is too high, will cause intense impact to pipeline, particularly drained moment of air, it is maximum that the intensity of impact reaches, and now pipeline is easy to produce booster.In pipeline, can sneak into foreign material, foreign material can stop up outlet valve entrance in exhaust process simultaneously, thereby affect the normal work of outlet valve.
Summary of the invention
The object of the present invention is to provide a kind of band with anti-plugging, protecting against shock to filter the composite bar air valve group of backwash function.
The technical solution used in the present invention is: band filters making up the property water hammer prevention valve group of backwash function, comprises main exhaust valve, and main exhaust valve valve body below is provided with perforate; Micro-exhaust valve connects perforate by pipeline and is communicated with main exhaust valve; The service valve that is located at main exhaust valve inlet, is characterized in that: also comprise
Trimmer valve group between main exhaust valve import and service valve outlet;
Between main exhaust valve import and trimmer valve group, be provided with filter screen;
On the valve body of service valve entrance point, be provided with reverse water intake, the valve body of service valve outlet end is provided with miscellaneous object outlet;
Oppositely water intake is communicated with the main exhaust valve valve body cavity of filter screen rear end by reverse intake pipe.
Preferably, described trimmer valve group comprises buffering valve body, in buffering valve body, is lifted with the axis of guide, and cushion plate is sleeved on the axis of guide.
Further preferred, described cushion plate is provided with throttle orifice.
Preferably, described filter screen external diameter is greater than the internal diameter of main exhaust valve valve body, and it coordinates for interference fit.
Preferably, described filter screen is located in main exhaust valve valve body.
Preferably, described filter screen is connected by Cock screw with main exhaust valve valve body suction flange.
Preferably, between micro-exhaust valve and perforate, be connected by T connector, wherein one end of T connector is connected with reverse intake pipe outlet.
Further preferred, between described reverse intake pipe and T connector, be provided with ball valve.
Preferably, described filter screen comprises net circle and screen, and screen is arranged in net circle in length and breadth, and the flat board of screen arranges along media flow direction.
Preferably, the area of passage of filter screen is at least 90%.
The invention has the beneficial effects as follows: suppress water column backflow by the trimmer valve group being located between main exhaust valve import and service valve outlet, prevent that water column from making shock up, fundamentally eliminate and make water hammer up.By being located at the foreign material in the strainer filtering pipeline between main exhaust valve import and the outlet of trimmer valve group, by the reverse water intake on service valve, the water in pipeline is oppositely accessed to main exhaust valve inner counter to flushing filtering net, again foreign material are discharged by pipeline from miscellaneous object outlet, thus the anti-blockage function of realizing.The screen filter screen that is welded on the upper composition of net circle in length and breadth, not only met filter require simultaneously can pipeline in hydraulic pressure, and less on area of passage impact, screen plate face is arranged along media flow direction, can be improved impact resistance.
Brief description of the drawings
Fig. 1 is making up the property water hammer prevention valve block structure sketch that band filters backwash function
Fig. 2 is filter screen scheme of installation
Fig. 3 is filter structure schematic diagram
Embodiment
As shown in Figure 1, band filters making up the property water hammer prevention valve group of backwash function, main exhaust valve 1 import has connected trimmer valve group 3, trimmer valve group 3 comprises buffering valve body 3-1, in buffering valve body 3-1, be lifted with axis of guide 3-2, cushion plate 3-3 is sleeved on the axis of guide, and cushion plate 3-3 is provided with throttle orifice 3-4.3 imports of trimmer valve group have connected service valve 2, between main exhaust valve 1 import and 3 outlets of trimmer valve group, are provided with filter screen 4.
The valve body of service valve 2 entrance points is provided with reverse water intake 2-1, miscellaneous object outlet 2-2 on the valve body of service valve 2 outlet end, between micro-exhaust valve 5 and perforate 1-1, be connected by T connector 1-2, wherein one end of T connector 1-2 is connected with reverse intake pipe 2-3 outlet, oppositely between intake pipe 2-3 and T connector 1-2, be also provided with ball valve 2-4, miscellaneous object outlet 2-2 discharges foreign material by pipeline.
As shown in Figure 2, filter screen 4 external diameters are slightly larger than the internal diameter of main exhaust valve valve body 1-3, and it coordinates for interference fit, and filter screen 4 is located in main exhaust valve valve body 1-3, and 1-3 is connected by Cock screw 4-1 with main exhaust valve valve body.
As shown in Figure 3, filter screen comprises net circle 4-2 and screen 4-3, and screen 4-3 is arranged in net circle 4-2 in length and breadth, and the flat board of screen 4-3 arranges along media flow direction, and said structure can effectively increase the impact resistance of filter screen, improves the life-span of filter screen.Existing filter screen adopts common reticular structure, and its shock resistance is poor, and working life is low; In the present embodiment, arranging of screen ensures that the area of passage of filter screen is at least 90%.
The realization of making up property of prevention water hammer function: when water column refluxes under gravity and suction function, main exhaust valve 1 pressure is malleation, cushion plate 3-3 flows down along axis of guide 3-2 and rises 3 outlets of trimmer valve group are blocked at positive pressure gas, main exhaust valve 1 flow is diminished, the air that now separates water column can not be discharged fast, therefore suppressing water column refluxes, prevent that water column from making shock up, fundamentally eliminate and make water hammer up, through certain hour, the air sucking is discharged by throttle orifice 3-4, current enter main exhaust valve 1, main exhaust valve ball float rises closes, simultaneous buffering plate 3-3 landing.
The realization of filtering function: open service valve 2, close ball valve 2-4 simultaneously, gas enters main exhaust valve valve body 1-3 inside from service valve 2, gas is discharged by main exhaust valve 1 and micro-exhaust valve 5, the foreign material that are mingled with in pipeline do not enter in main exhaust valve 1 under the effect of filter screen 4, thereby have realized filtering function.The simultaneously screen 4-3 filter screen that is welded on the upper composition of net circle 4-2 in length and breadth, not only met filter require simultaneously can pipeline in hydraulic pressure, and less on area of passage impact, screen 4-3 plate face is arranged along media flow direction simultaneously, has improved impact resistance.
The realization of backwashing function: close service valve 2, open ball valve 2-4 simultaneously, press water in pipeline flows into main exhaust valve 1 inside by flow through reverse intake pipe 2-3 and T connector 1-2 of reverse water intake 2-1, water rinses filter screen 4 from the rear end of filter screen 4, finally by miscellaneous object outlet 2-2 and pipeline, foreign material are developed, realize backwashing function, effectively prevented the obstruction of outlet valve group, reached anticlogging object.
Claims (10)
1. band filters making up the property water hammer prevention valve group of backwash function, comprises main exhaust valve, and main exhaust valve valve body below is provided with perforate; Micro-exhaust valve connects described perforate by pipeline and is communicated with main exhaust valve; The service valve that is located at main exhaust valve inlet, is characterized in that: also comprise
Be located at the trimmer valve group between main exhaust valve import and service valve outlet;
Between main exhaust valve import and trimmer valve group, be provided with filter screen;
The valve body that is located at service valve entrance point is provided with reverse water intake, and the valve body of service valve outlet end is provided with miscellaneous object outlet;
Oppositely water intake is communicated with the main exhaust valve valve body cavity of filter screen rear end by reverse intake pipe.
2. band as claimed in claim 1 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: described trimmer valve group comprises buffering valve body, and in buffering valve body, be lifted with the axis of guide, cushion plate is sleeved on the axis of guide.
3. band as claimed in claim 2 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: described cushion plate is provided with throttle orifice.
4. band as claimed in claim 1 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: described filter screen external diameter is greater than the internal diameter of main exhaust valve valve body, and it coordinates for interference fit.
5. band as claimed in claim 1 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: described filter screen is located in main exhaust valve valve body.
6. the band as described in claim 1 or 4 or 5 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: described filter screen is connected by Cock screw with main exhaust valve valve body suction flange.
7. band as claimed in claim 1 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: between micro-exhaust valve and perforate, be connected by T connector, wherein one end of T connector is connected with reverse intake pipe outlet.
8. band as claimed in claim 7 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: between described reverse intake pipe and T connector, be provided with ball valve.
9. band as claimed in claim 1 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: described filter screen comprises net circle and screen, and screen is arranged in net circle in length and breadth, and the flat board of screen arranges along media flow direction.
10. the band as described in claim 1 or 7 filters making up the property water hammer prevention valve group of backwash function, it is characterized in that: the area of passage of filter screen is at least 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385448.0A CN102900890B (en) | 2012-10-10 | 2012-10-10 | Bridged water hammer prevention valve group with filtering and backflushing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385448.0A CN102900890B (en) | 2012-10-10 | 2012-10-10 | Bridged water hammer prevention valve group with filtering and backflushing functions |
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| Publication Number | Publication Date |
|---|---|
| CN102900890A CN102900890A (en) | 2013-01-30 |
| CN102900890B true CN102900890B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210385448.0A Active CN102900890B (en) | 2012-10-10 | 2012-10-10 | Bridged water hammer prevention valve group with filtering and backflushing functions |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373742A (en) * | 2014-10-10 | 2015-02-25 | 武汉大学 | Pressure limiting type liquid column separation preventing air valve |
| CN104913111B (en) * | 2015-06-05 | 2017-09-29 | 株洲南方阀门股份有限公司 | Water hammer-resistant method for exhausting during water hammer-resistant air valve and pipeline use |
| CN107956886B (en) * | 2017-11-29 | 2021-01-12 | 株洲南方阀门股份有限公司 | From quick-suction slow-discharge type air valve with overhaul and filtration functions |
| CN107781495A (en) * | 2017-12-05 | 2018-03-09 | 博纳斯威阀门股份有限公司 | A kind of combined type air inlet and exhaust valve of water hammer-resistant structure |
| CN110332369A (en) * | 2019-08-13 | 2019-10-15 | 天津卡尔斯阀门股份有限公司 | A kind of water hammer-resistant composite bar air valve |
| CN112037746B (en) * | 2020-07-31 | 2023-03-14 | 清华大学 | Diversion noise reduction structure, diversion noise reduction assembly and control rod hydraulic drive system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193197Y (en) * | 1994-06-04 | 1995-03-29 | 张忠樵 | Full automatic back-flushing filter |
| CN102401155A (en) * | 2011-08-30 | 2012-04-04 | 深圳市华力大机电技术有限公司 | Air valve set with four functions for waterproof hammer |
| CN202992351U (en) * | 2012-10-10 | 2013-06-12 | 武汉大禹阀门股份有限公司 | Bridging water hammer prevention valve unit with filtering backflushing function |
-
2012
- 2012-10-10 CN CN201210385448.0A patent/CN102900890B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193197Y (en) * | 1994-06-04 | 1995-03-29 | 张忠樵 | Full automatic back-flushing filter |
| CN102401155A (en) * | 2011-08-30 | 2012-04-04 | 深圳市华力大机电技术有限公司 | Air valve set with four functions for waterproof hammer |
| CN202992351U (en) * | 2012-10-10 | 2013-06-12 | 武汉大禹阀门股份有限公司 | Bridging water hammer prevention valve unit with filtering backflushing function |
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| Publication number | Publication date |
|---|---|
| CN102900890A (en) | 2013-01-30 |
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Denomination of invention: Bridging water hammer prevention valve group with filtering and backwashing function Effective date of registration: 20230420 Granted publication date: 20141029 Pledgee: Bank of China Limited Wuhan Economic and Technological Development Zone sub branch Pledgor: WUHAN DAYU VALVE Co.,Ltd. Registration number: Y2023420000169 |