CN202992351U - Bridging water hammer prevention valve unit with filtering backflushing function - Google Patents
Bridging water hammer prevention valve unit with filtering backflushing function Download PDFInfo
- Publication number
- CN202992351U CN202992351U CN 201220521445 CN201220521445U CN202992351U CN 202992351 U CN202992351 U CN 202992351U CN 201220521445 CN201220521445 CN 201220521445 CN 201220521445 U CN201220521445 U CN 201220521445U CN 202992351 U CN202992351 U CN 202992351U
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- Prior art keywords
- valve
- water hammer
- main exhaust
- hammer prevention
- exhaust valve
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- Withdrawn - After Issue
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Abstract
The utility model discloses a bridging water hammer prevention valve unit with a filtering backflushing function. The bridging water hammer prevention valve unit with the filtering backflushing function comprises a main vent valve. A main vent valve inlet is connected with a communicated buffering valve unit. A filtering net is arranged between the main vent valve inlet and the buffering valve unit. A backflushing water inlet port is formed in a valve body at a service valve inlet end. A sundry outlet is formed in a valve body of a service valve outlet end. A micro vent valve and a backflushing water inlet port are communicated through a pipeline and a main vent valve cavity of a pipeline at the rear end of the filtering net. The buffering valve unit comprises a buffering plate and a throttling hole. The bridging water hammer prevention valve unit with the filtering backflushing function avoids water column bridging impact due to the fact that water column backflushing is controlled by the main vent valve inlet and the service valve outlet, enables water in a pipeline of a backflushing water inlet of the service valve to be connected to a backflushing filtering net inside the main vent valve, enables the sundries to be expelled from the sundry outlet through a pipeline and achieves an anti-blocking function.
Description
Technical field
The utility model belongs to the outlet valve in pipeline, is specifically related to a kind of composite exhaust valve.
Background technique
At present composite exhaust valve comprises the valve body of vertical runner, connects valve gap on valve body, and valve body is established carriage, and carriage is provided with ball float, the runner hole wall of valve gap be provided with and ball float between sealing pair, and the top of valve body is connected with micro-exhaust valve.When a large amount of exhaust of main exhaust valve, because pipeline water supply initial stage current are in acceleration mode, this state pressurized air makes outlet valve enter a large amount of exhausts, when flow velocity is too high, will cause intense impact to pipeline, particularly air drained moment, it is maximum that the intensity of impact reaches, and this moment, pipeline was easy to produce booster.Simultaneously can sneak into foreign material in pipeline, foreign material can stop up the outlet valve entrance in exhaust process, thereby affect the normal operation of outlet valve.
Summary of the invention
The purpose of this utility model 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 adopted in the utility model is: band filters making up the property water hammer prevention valve group of backwash function, comprises main exhaust valve, is provided with perforate below the main exhaust valve valve body; Micro-exhaust valve connects perforate by pipeline and is communicated with main exhaust valve; Be located at the service valve of main exhaust valve inlet, it is characterized in that: also comprise
Trimmer valve group between main exhaust valve import and service valve outlet;
Be provided with filter screen between main exhaust valve import and trimmer valve group;
Be provided with reverse water intake on the valve body of service valve entrance point, 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 the buffering valve body, is lifted with the axis of guide in the buffering valve body, 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 is interference fit.
Preferably, described filter screen is located in the main exhaust valve valve body.
Preferably, described filter screen is connected by Cock screw with main exhaust valve valve body suction flange.
Preferably, be connected by T connector between micro-exhaust valve and perforate, a wherein end of T connector is connected with reverse intake pipe outlet.
Further preferred, be provided with ball valve between described reverse intake pipe and T connector.
Preferably, described filter screen comprises net circle and screen, and screen is arranged in the net circle in length and breadth, and the flat board of screen arranges along the media flow direction.
Preferably, the area of passage of filter screen is at least 90%.
The beneficial effects of the utility model are: suppress the water column backflow by the trimmer valve group that is located between the outlet of main exhaust valve import and service valve, 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 the outlet of main exhaust valve import and trimmer valve group, by the reverse water intake on service valve, the water in pipeline is oppositely accessed the 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.Screen in length and breadth be welded on the upper filter screen that forms of net circle, not only satisfied filter require simultaneously can pipeline in hydraulic pressure, and less on the area of passage impact, screen plate face is arranged along the media flow direction, can be improved impact resistance.
Description of drawings
Fig. 1 is making up the property water hammer prevention valve block structure sketch that band filters the backwash function
Fig. 2 is the filter screen scheme of installation
Fig. 3 is the 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, be lifted with axis of guide 3-2 in buffering valve body 3-1, 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, are provided with filter screen 4 between main exhaust valve 1 import and 3 outlets of trimmer valve group.
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, be connected by T connector 1-2 between micro-exhaust valve 5 and perforate 1-1, the wherein end of T connector 1-2 is connected with reverse intake pipe 2-3 outlet, oppositely also be provided with ball valve 2-4 between intake pipe 2-3 and T connector 1-2, 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 is 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 the 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 the 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, the area of passage that guarantees filter screen that arranges of 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 to rise along axis of guide 3-2 at positive pressure gas 3 outlets of trimmer valve group is blocked, make main exhaust valve 1 flow diminish, separating the air of water column this moment can not discharge 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 that sucks is discharged by throttle orifice 3-4, current enter main exhaust valve 1, the main exhaust valve ball float rises closes, simultaneous buffering plate 3-3 landing.
The realization of filtering function: open service valve 2, close simultaneously ball valve 2-4, it is inner that gas enters main exhaust valve valve body 1-3 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.Simultaneously screen 4-3 in length and breadth be welded on the upper filter screen that forms of net circle 4-2, not only satisfied filter require simultaneously can pipeline in hydraulic pressure, and less on the area of passage impact, screen 4-3 plate face is arranged along the media flow direction simultaneously, has improved impact resistance.
The realization of backwashing function: close service valve 2, open simultaneously ball valve 2-4, 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, by miscellaneous object outlet 2-2 and pipeline, foreign material are developed at last, realize backwashing function, effectively prevented the obstruction of outlet valve group, reached anticlogging purpose.
Claims (10)
1. band filters making up the property water hammer prevention valve group of backwash function, comprises main exhaust valve, is provided with perforate below the main exhaust valve valve body; Micro-exhaust valve connects perforate by pipeline and is communicated with main exhaust valve; Be located at the service valve of main exhaust valve inlet, it is characterized in that: also comprise
Be located at the trimmer valve group between the outlet of main exhaust valve import and service valve;
Be provided with filter screen between main exhaust valve import and trimmer valve group;
The valve body that is located at the 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, and it is characterized in that: described trimmer valve group comprises the buffering valve body, is lifted with the axis of guide in the buffering valve body, and 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, and 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 is interference fit.
5. band as claimed in claim 1 filters making up the property water hammer prevention valve group of backwash function, and it is characterized in that: described filter screen is located in the main exhaust valve valve body.
6. as making up the property water hammer prevention valve group of claim 1 or 4 or 5 described bands filtration backwash functions, 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: is connected by T connector between micro-exhaust valve and perforate, a wherein end of T connector exports with reverse intake pipe and is connected.
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: be provided with ball valve between described reverse intake pipe and T connector.
9. band as claimed in claim 1 filters making up the property water hammer prevention valve group of backwash function, and it is characterized in that: described filter screen comprises net circle and screen, and screen is arranged in the net circle in length and breadth, and the flat board of screen arranges along the media flow direction.
10. band as described in claim 1 or 7 filters making up the property water hammer prevention valve group of backwash function, and 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 |
|---|---|---|---|
| CN 201220521445 CN202992351U (en) | 2012-10-10 | 2012-10-10 | Bridging water hammer prevention valve unit with filtering backflushing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521445 CN202992351U (en) | 2012-10-10 | 2012-10-10 | Bridging water hammer prevention valve unit with filtering backflushing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992351U true CN202992351U (en) | 2013-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220521445 Withdrawn - After Issue CN202992351U (en) | 2012-10-10 | 2012-10-10 | Bridging water hammer prevention valve unit with filtering backflushing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992351U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900890A (en) * | 2012-10-10 | 2013-01-30 | 武汉大禹阀门股份有限公司 | Bridged water hammer prevention valve group with filtering and backflushing functions |
| CN104896184A (en) * | 2015-06-05 | 2015-09-09 | 株洲南方阀门股份有限公司 | Water hammer air valve and water hammer gas discharging method during pipeline use |
| CN107789913A (en) * | 2017-11-29 | 2018-03-13 | 株洲南方阀门股份有限公司 | The air valve set of anti-cleaning function is filtered in a kind of band maintenance |
-
2012
- 2012-10-10 CN CN 201220521445 patent/CN202992351U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900890A (en) * | 2012-10-10 | 2013-01-30 | 武汉大禹阀门股份有限公司 | Bridged water hammer prevention valve group with filtering and backflushing functions |
| CN102900890B (en) * | 2012-10-10 | 2014-10-29 | 武汉大禹阀门股份有限公司 | Bridged water hammer prevention valve group with filtering and backflushing functions |
| CN104896184A (en) * | 2015-06-05 | 2015-09-09 | 株洲南方阀门股份有限公司 | Water hammer air valve and water hammer gas discharging method during pipeline use |
| CN104896184B (en) * | 2015-06-05 | 2018-01-19 | 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 |
| CN107789913A (en) * | 2017-11-29 | 2018-03-13 | 株洲南方阀门股份有限公司 | The air valve set of anti-cleaning function is filtered in a kind of band maintenance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20141029 |
|
| RGAV | Abandon patent right to avoid regrant |