CN203750259U - Secondary filtering device for blowdown ditch at bottom layer of coal transfer station of heat-engine plant - Google Patents
Secondary filtering device for blowdown ditch at bottom layer of coal transfer station of heat-engine plant Download PDFInfo
- Publication number
- CN203750259U CN203750259U CN201420149974.1U CN201420149974U CN203750259U CN 203750259 U CN203750259 U CN 203750259U CN 201420149974 U CN201420149974 U CN 201420149974U CN 203750259 U CN203750259 U CN 203750259U
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- CN
- China
- Prior art keywords
- filter screen
- blowdown ditch
- transfer station
- level
- reinforcing bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a secondary filtering device for a blowdown ditch at the bottom layer of a coal transfer station of a heat-engine plant. The secondary filtering device comprises a primary filter screen and a secondary filter screen, which are both formed by steel angles and steel bars, the primary filter screen is formed by one row of vertical steel bars welded on the side wall of the steel angle at unequal horizontal intervals, the secondary filter screen is in a grating shape welded by a row of vertical steel bars and a row of horizontal steel bars, and the secondary filter screen is arranged behind the primary filter screen. The secondary filtering device has the advantages that coal slime flushing water in the blowdown ditch at the bottom layer is secondarily filtered to prevent a great amount of impurities from flowing into a sewage pool, and the flow rate of the coal slime flushing water can be reduced to enable coal slime to be deposited in the blowdown ditch, therefore, the content of the coal slime of the sewage pool can be reduced and the blowdown ditch is shallow and is easy to clean; the working environment in the coal transfer station can be improved, the service life of a sewage pump is prolonged, and the filtering device has simplicity in manufacture, low cost, simplicity, practicability and easiness in cleaning.
Description
Technical field
Utility model belongs to thermal power plant's defeated coal transfer station filter, especially relates to a kind of thermal power plant defeated coal transfer station bottom blowdown ditch two-stage filter.
Background technology
Ground area coal in existing domestic electric power plant coal transportation transfer station running layer is serious, a large amount of coal slime flushing waters need be collected to blowdown ditch and drain into next running layer through floor drain pollution-discharging pipe again, after being finally collected to transfer station bottom blowdown ditch, enter cesspool, finally deliver to professional slurry pond by dredge pump in cesspool.The flushing water that collects cesspool not only contains a large amount of coal slimes, and carry foreign material, and as branch, fragment, braid over braid etc., cesspool is deep is simultaneously difficult for labor cleaning.Therefore often cause dredge pump by foreign material jam, have a strong impact on the normal work of transfer station drainage, worsen the working environment in transfer station; And in sewage, the coal slime of high-load has been accelerated the wearing and tearing of dredge pump blade, has reduced the dredge pump life-span, has improved operating cost.
Summary of the invention
It is a kind of by the cascade filtration effect of bottom blowdown ditch coal slime flushing water being stopped to a large amount of foreign material flow into cesspool that the purpose of this utility model is to provide; The flow velocity that can reduce again coal slime flushing water is deposited in blowdown ditch coal slime, thereby reduces the coal slurry content of cesspool, the more shallow thermal power plant's defeated coal transfer station bottom blowdown ditch two-stage filter of being convenient to labor cleaning of blowdown ditch simultaneously.The utility model has not only improved the working environment in transfer station, has extended the life-span of dredge pump.The utility model is made simple, with low cost, simple and practical.
The technical solution of the utility model is:
A kind of thermal power plant defeated coal transfer station bottom blowdown ditch two-stage filter, comprise one-level filter screen and secondary filter screen by angle steel and reinforcement fabrication, it is characterized in that, one-level filter screen is welded on the sidewall of angle steel with the level interval not waiting by the vertical reinforcing bar of a row, secondary filter screen is welded to each other into grid-like by the vertical reinforcing bar of a row and the reinforcing bar of a row of horizontal, secondary filter screen is arranged on after one-level filter screen.
In order to obtain better technique effect, the angle steel length of one-level filter screen is greater than blowdown ditch width, the reinforcing bar of a level of bottom welding of its vertical setting of types reinforcing bar, then under horizontal reinforcement, weld 2 reinforcing bar filter screen supporting legs; One-level filter screen vertical setting of types reinforcing bar therefrom mind-set both sides level interval increases gradually, because coal slime flushing water is the highest foreign material that also more easily carry of center flow velocity in the time that blowdown ditch flows, therefore middle ware reduces the flow velocity of coal slime flushing water apart from I effectively to stop foreign material simultaneously, makes to be reduced and be beneficial to coal slime precipitation by the flow velocity of coal slime flushing water after one-level filter screen.Open civil engineering draw-in groove at the blowdown ditch sidewall scene that one-level filter screen is installed, the on-the-spot perforate in filter screen supporting leg installation place simultaneously, therefore, first-level filtering holds angle steel can ride over blowdown ditch top on the net, both sides can be fixed in civil engineering draw-in groove, lower end filter screen supporting leg can inject in civil engineering perforate, therefore one-level filter screen obtains the effectively fixing impact that can resist coal slime flushing water; Secondary filter screen is arranged in the blowdown ditch after one-level filter screen, and at intervals can effectively precipitate with coal slime after ensureing one-level filter screen; The angle steel length of secondary filter screen is greater than blowdown ditch width, and the horizontal reinforcement in the vertical direction of its grid is constantly increased to upper end spacing by bottom; Grill space is less than the minimum level spacing of the vertical reinforcing bar of one-level filter screen, because coal slime flushing water is Speed Reduction after one-level filter screen, coal slime trends towards precipitation, therefore blowdown ditch center is high with lower section coal slurry content, therefore the horizontal reinforcement in the vertical direction of grid is constantly increased to upper end spacing by blowdown ditch bottom, with interception coal slime and foreign material, further reduce coal slime flushing water flow velocity a part of coal slime is deposited in before secondary filter screen.In the time that coal slime is piled up in secondary filter screen bottom, coal slime flushing water can only pass through from secondary filter screen top, has increased undoubtedly flow resistance, and flow velocity is further reduced.Finally allow coal slime fully precipitate in secondary filter screen front and back are remote, therefore greatly reduce the coal slurry content that flows into cesspool; At grid bottom welding filter screen supporting leg, open civil engineering draw-in groove at the blowdown ditch sidewall scene that secondary filter screen is installed equally, the on-the-spot perforate in filter screen supporting leg installation place simultaneously, fixes secondary filter screen.In the time of cleaning filter screen, directly extract out, simple to operate.
The utility model has the advantage of: it can be by stopping that to the cascade filtration effect of bottom blowdown ditch coal slime flushing water a large amount of foreign material flow into cesspool; The flow velocity that can reduce again coal slime flushing water is deposited in blowdown ditch coal slime, thereby reduces the coal slurry content of cesspool, and the ditch of blowdown is simultaneously more shallow is convenient to labor cleaning.Not only improve the working environment in transfer station, extended the life-span of dredge pump.This filter is made simple, with low cost, simple and practical, easily cleaning.
Brief description of the drawings
Fig. 1 is the utility model thermal power plant defeated coal transfer station bottom blowdown ditch two-stage filter scheme of installation;
Fig. 2 is the utility model one-level filter screen A-A cross-sectional view;
Fig. 3 is the utility model secondary filter screen B-B cross-sectional view.
Detailed description of the invention
A kind of thermal power plant defeated coal transfer station bottom blowdown ditch two-stage filter, comprises one-level filter screen 5 and secondary filter screen 6.One-level filter screen 5 and secondary filter screen 6 are by angle steel and reinforcement fabrication.One-level filter screen 5 is welded on the sidewall of angle steel 1 with the level interval not waiting by the vertical reinforcing bar 2 of a row, angle steel 1 length is greater than blowdown ditch 4 width, at the reinforcing bar of a level of the bottom of vertical setting of types reinforcing bar 2 welding, then under horizontal reinforcement, welds 2 reinforcing bar filter screen supporting legs 9.The vertical setting of types reinforcing bar 2 of one-level filter screen 5 therefrom mind-set both sides level interval increases gradually.Open civil engineering draw-in groove at the blowdown ditch 4 sidewall scenes that one-level filter screen 5 is installed, simultaneously in the on-the-spot perforate in filter screen supporting leg 9 installation places.Ensure that one-level filter screen 5 upper end angle steel 1 can ride over blowdown ditch 4 tops, both sides can be fixed in civil engineering draw-in groove, and lower end filter screen supporting leg 9 can inject in civil engineering perforate.Secondary filter screen 6 is at intervals arranged on after one-level filter screen 5.Secondary filter screen 6 is welded to each other into grid 21 by the vertical reinforcing bar of a row with the reinforcing bar of a row of horizontal, finally grid 21 is welded on to angle steel 11 sidewalls, and angle steel 11 length are greater than blowdown ditch 4 width.The horizontal reinforcement in the vertical direction of grid 21 is constantly increased to upper end spacing by blowdown ditch bottom, and grid 21 spacing are less than the minimum level interval of one-level filter screen 5 vertical reinforcing bars.At grid 21 bottom welding filter screen supporting legs 91, open civil engineering draw-in groove at the blowdown ditch 4 sidewall scenes that secondary filter screen 6 is installed equally, in the on-the-spot perforate in filter screen supporting leg 91 installation places, secondary filter screen is fixed simultaneously.This two-stage filter has reduced the coal slurry content that flows into cesspool 7.
Claims (6)
1. thermal power plant's defeated coal transfer station bottom blowdown ditch two-stage filter, comprise one-level filter screen and secondary filter screen by angle steel and reinforcement fabrication, it is characterized in that, one-level filter screen is welded on the sidewall of angle steel with the level interval not waiting by the vertical reinforcing bar of a row, secondary filter screen is welded to each other into grid-like by the vertical reinforcing bar of a row and the reinforcing bar of a row of horizontal, secondary filter screen is arranged on after one-level filter screen.
2. the defeated coal transfer station of thermal power plant claimed in claim 1 bottom blowdown ditch two-stage filter, it is characterized in that, the angle steel length of described one-level filter screen is greater than blowdown ditch width, the reinforcing bar of a level of bottom welding of its vertical setting of types reinforcing bar, then under horizontal reinforcement, weld 2 reinforcing bar filter screen supporting legs.
3. the defeated coal transfer station of the thermal power plant described in claim 1 or 2 bottom blowdown ditch two-stage filter, is characterized in that, described one-level filter screen vertical setting of types reinforcing bar therefrom mind-set both sides level interval increases gradually.
4. the defeated coal transfer station of thermal power plant claimed in claim 1 bottom blowdown ditch two-stage filter, is characterized in that, the angle steel length of described secondary filter screen is greater than blowdown ditch width, and the horizontal reinforcement in the vertical direction of its grid is constantly increased to upper end spacing by bottom.
5. the defeated coal transfer station of thermal power plant claimed in claim 4 bottom blowdown ditch two-stage filter, is characterized in that, described Grill space is less than the minimum level spacing of the vertical reinforcing bar of one-level filter screen.
6. the defeated coal transfer station of thermal power plant claimed in claim 1 bottom blowdown ditch two-stage filter, is characterized in that, described grid bottom welding filter screen supporting leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149974.1U CN203750259U (en) | 2014-03-31 | 2014-03-31 | Secondary filtering device for blowdown ditch at bottom layer of coal transfer station of heat-engine plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149974.1U CN203750259U (en) | 2014-03-31 | 2014-03-31 | Secondary filtering device for blowdown ditch at bottom layer of coal transfer station of heat-engine plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203750259U true CN203750259U (en) | 2014-08-06 |
Family
ID=51245570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420149974.1U Expired - Fee Related CN203750259U (en) | 2014-03-31 | 2014-03-31 | Secondary filtering device for blowdown ditch at bottom layer of coal transfer station of heat-engine plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203750259U (en) |
-
2014
- 2014-03-31 CN CN201420149974.1U patent/CN203750259U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20190331 |