CN210495513U - Coal water sedimentation tank capable of automatically collecting coal slime - Google Patents
Coal water sedimentation tank capable of automatically collecting coal slime Download PDFInfo
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- CN210495513U CN210495513U CN201920692380.8U CN201920692380U CN210495513U CN 210495513 U CN210495513 U CN 210495513U CN 201920692380 U CN201920692380 U CN 201920692380U CN 210495513 U CN210495513 U CN 210495513U
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Abstract
The utility model discloses an automatic collect coal slime's coal water sedimentation tank, including coal water collecting pit and coal water sedimentation tank, coal water collecting pit passes through coal water delivery pump and coal water sedimentation tank intercommunication, and coal water sedimentation tank includes coal water sedimentation one room and two rooms of coal water sedimentation, and coal water sedimentation one room and two rooms of coal water sedimentation pass through the filter screen intercommunication, and is provided with the filter pocket in coal water sedimentation one room, and two rooms of coal water sedimentation and three rooms of coal water sedimentation intercommunication, and be provided with the overflow weir between two rooms of coal water sedimentation and the three rooms of coal water sedimentation, and three rooms of coal water sedimentation are through elevator pump and contain coal effluent treatment plant intercommunication. The utility model is suitable for an among any coal wastewater treatment system, can collect the coal slime at the coal water entry, the coal slime that significantly reduces gets into the content of coal water sedimentation tank, can realize unmanned on duty, the fault rate is low, play water stable in quality of water, can adapt to into the water flow undulant, fault rate and the cost of labor that can greatly reduced coal wastewater treatment system.
Description
Technical Field
The utility model relates to an automatic coal water sedimentation tank of collection coal slime.
Background
The conventional coal-containing wastewater treatment process comprises the following steps:
coal yard washing water → a coal water collecting tank → a coal water delivery pump → a coal-containing wastewater sedimentation tank → an intermediate water pump (supernatant liquid) → a coal-containing wastewater treatment device → qualified treated water is recycled to the coal yard.
The coal slime in the coal water sedimentation tank is grabbed out by a coal slime grab bucket and then sent back to the coal yard, and the flow chart is shown in figure 1.
The treatment process of the coal-containing wastewater is different according to different treatment devices of the coal-containing wastewater, and can be roughly divided into a coagulation dosing method, an electronic flocculation method, a high tower method and the like, such as Chinese patent with application number 201610650012.8, but the same points are that a coal water collecting tank and a coal-containing wastewater sedimentation tank are required. The coal-containing wastewater treatment system is a water treatment system with the highest failure rate of a coal-fired power plant, and is mainly characterized in that the coal-containing wastewater treatment system is stopped due to the fact that coal slime deposits in a coal-containing wastewater sedimentation tank and a grab bucket cannot be thoroughly cleaned.
Because of the coal water in the coal water collecting tank contains solid content higher, the coal slime deposition speed in the coal water collecting tank is very fast, if the coal slime is not cleaned in time, the whole coal-containing wastewater treatment system can be stopped, and the coal water overflows from the collecting tank all the time, so that the environment is polluted.
The following problems exist in the method of adopting a grab bucket to clean coal slime:
1. the coal water sedimentation tank is generally of a rectangular underground type, and due to the fact that the mud bucket is fixed, the coal slime is deposited and deposited to form dead angles, and the mud bucket cannot be cleaned.
2. When the grab bucket clears up the coal slime, the coal slime is not separately with the coal water, leads to the coal slime moisture content high.
3. The mud grab bucket has high failure rate, which causes large workload of manual cleaning.
SUMMERY OF THE UTILITY MODEL
The utility model aims at automatically collecting the coal slime that gets into coal water sedimentation tank, greatly reduced gets into the coal slime content of coal water sedimentation tank, for subsequent contain coal effluent treatment plant create more excellent water inlet condition, reduces and contains coal effluent treatment system fault rate.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides an automatic collect coal slime's coal water sedimentation tank, characterized by includes coal water collecting pit and coal water sedimentation tank, coal water collecting pit passes through coal water delivery pump and coal water sedimentation tank intercommunication, coal water sedimentation tank includes coal water sedimentation one room and two rooms of coal water sedimentation, coal water sedimentation one room and two rooms of coal water sedimentation pass through the filter screen intercommunication, and are provided with in coal water sedimentation one room and strain the pocket, two rooms of coal water sedimentation and three rooms of coal water sedimentation communicate, and are provided with the overflow between two rooms of coal water sedimentation and the three rooms of coal water sedimentation and strain the weir, three rooms of coal water sedimentation are through the elevator pump and contain coal effluent treatment plant intercommunication.
Furthermore, strain the top of pocket and be provided with automatic pull-out rod for when the pocket is strained in the clearance, will strain the pocket and deposit an indoor pull-out from the coal water.
The working method comprises the following steps: the coal water output from the coal water collecting tank through the coal water delivery pump enters the filter pocket firstly, the coal slime in the coal water is left in the filter pocket, the water in the coal water is precipitated from the coal water through the filter pocket and enters the coal water precipitation secondary chamber through the filter screen, after the coal water precipitation secondary chamber stays for a period of time, the water in the coal water flows to the coal water precipitation tertiary chamber through the overflow filter weir, and then is delivered to the coal-containing wastewater treatment device through the lifting pump to be treated.
When the pocket was strained in the clearance, earlier strain the pocket through automatic pull-out rod removal, make it keep away from coal water inlet pipe way, then upwards pull up, clear up the coal slime of straining in the pocket.
Compared with the prior art, the utility model, have following advantage and effect:
1) the filter pocket can intercept and collect more than 90% of coal slime, and the filter pocket can be directly pulled out during cleaning, so that the centralized collection of the coal slime is ensured;
2) three coal water sedimentation chambers are designed, so that the coal water retention time is greatly guaranteed, and the supernatant enters the three coal water sedimentation chambers through the overflow weir, so that the stability of the effluent quality is guaranteed to the maximum extent.
3) The automatic pull-out rod is designed above the filter bag, and when the filter bag is cleaned, the net bag is moved firstly, so that the net bag is far away from a coal water inlet pipeline and is pulled upwards, and the filter bag is convenient and fast.
Drawings
FIG. 1 is a schematic structural diagram of the conventional coal-containing wastewater treatment process device of the utility model.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
In the figure: the coal water sedimentation device comprises a coal water collection tank 1, a coal water delivery pump 2, a coal water sedimentation tank 3, a coal water sedimentation first chamber 4, a coal water sedimentation second chamber 5, a coal water sedimentation third chamber 6, a filter bag 7, an overflow filter weir 8, a lift pump 9 and a filter screen 10.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 2, the coal water sedimentation tank for automatically collecting coal slime in the embodiment includes a coal water collection tank 1 and a coal water sedimentation tank 3, the coal water collection tank 1 is communicated with the coal water sedimentation tank 3 through a coal water delivery pump 2, the coal water sedimentation tank 3 includes a coal water sedimentation first chamber 4 and a coal water sedimentation second chamber 5, the coal water sedimentation first chamber 4 and the coal water sedimentation second chamber 5 are communicated through a filter screen 10, a filter bag 7 is arranged in the coal water sedimentation first chamber 4, the coal water sedimentation second chamber 5 is communicated with a coal water sedimentation third chamber 6, an overflow filter weir 8 is arranged between the coal water sedimentation second chamber 5 and the coal water sedimentation third chamber 6, and the coal water sedimentation third chamber 6 is communicated with a coal-containing wastewater treatment device through a lift pump 9.
An automatic pull-out rod is arranged above the filtering pocket 7 and used for pulling out the filtering pocket 7 from the coal water sedimentation chamber 4 when the filtering pocket 7 is cleaned.
The working method comprises the following steps: the coal water from the coal water collecting pool 1 through the output of the coal water delivery pump 2 firstly enters the filter pocket 7, the coal slime in the coal water is left in the filter pocket 7, the water in the coal water is deposited in the first chamber 4 through the coal water through the filter pocket 7 and enters the second chamber 5 through the filter screen 10, after the second chamber 5 stays for a period of time, the water in the coal water flows to the third chamber 6 through the overflow filter weir 8, and then is conveyed to the coal-containing wastewater treatment device through the lifting pump 9 to be treated.
When pocket 7 was strained in the clearance, earlier strain pocket 7 through automatic pull-out rod removal, make it keep away from coal water inlet pipe way, then upwards pull up, clear up the coal slime of straining in the pocket 7.
In this embodiment, the coal water sedimentation tank of automatic collection coal slime is applicable to in any coal wastewater treatment system, can collect the coal slime at the coal water entry, and the coal slime that significantly reduces gets into the content of coal water sedimentation tank 3 can realize unmanned on duty, the fault rate is low, play water quality of water is stable, can adapt to into the inflow fluctuation of flow, can greatly reduced contain coal wastewater treatment system's fault rate and cost of labor.
Example 1:
the operation flow of the wastewater of the coal yard of a certain power plant in Anhui province is as follows: coal yard washing water → coal water collecting tank → coal water sedimentation tank → lift pump → coal-containing wastewater treatment system → wastewater reuse. Because the coal slurry deposition speed of the coal water collecting tank is high, the mud grab bucket fails, and the manual cleaning cannot meet the production requirements, the coal-containing wastewater treatment system is often in a shutdown state, and coal-containing wastewater overflows.
Through this application technical transformation back, increase the filter screen and strain the pocket at original coal water sedimentation tank, strain the periodic automatic clearance of pocket every week, the coal slime rate of recovery can reach 92%, most coal slime backward flow, run for half a year, no longer because of the unable coal slime that discharges of coal water sedimentation tank leads to the system to shut down the scene and take place.
Example 2:
the flow of the coal-containing wastewater system of a certain closed coal yard in Shandong is as follows: coal yard washing water → coal water collecting tank → coal water sedimentation tank → lift pump → coal-containing wastewater treatment system → wastewater reuse. Coal slime can't be cleared up in the coal water sedimentation tank, contains coal waste water behind the elevator pump and contains the solid rate high, leads to elevator pump impeller often to damage to and follow-up coal waste water treatment device blocks up the condition seriously. The coal yard water system can not form closed circulation, and the coal-containing wastewater can not be recycled after normal treatment and only overflows to pollute the environment.
Through this application transformation back, increase the filter screen and strain the pocket at original coal water sedimentation tank, strain the periodic automatic clearance of pocket every week, the coal slime rate of recovery can reach 93%, moves 3 months, promotes pump export waste water turbidity 15NTU, and the naked eye is watched, does not have obvious large granule coal slime, and coal-containing wastewater treatment system operates normally.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as being included in the following claims.
Claims (2)
1. The utility model provides an automatic collect coal slime's coal water sedimentation tank, characterized by includes coal water collecting pit (1) and coal water sedimentation tank (3), coal water collecting pit (1) is through coal water delivery pump (2) and coal water sedimentation tank (3) intercommunication, coal water sedimentation tank (3) are including coal water deposit one room (4) and two rooms of coal water deposit (5), coal water deposit one room (4) and two rooms of coal water deposit (5) are through filter screen (10) intercommunication, and are provided with in coal water deposit one room (4) and strain pocket (7), two rooms of coal water deposit (5) and three rooms of coal water deposit (6) intercommunication, and be provided with between two rooms of coal water deposit (5) and the three rooms of coal water deposit (6) and spill filter weir (8), three rooms of coal water deposit (6) through elevator pump (9) and contain coal effluent treatment plant intercommunication.
2. The coal water sedimentation tank for automatically collecting coal slime according to claim 1, wherein an automatic pull-out rod is arranged above the filter bag (7) and is used for pulling the filter bag (7) out of the coal water sedimentation chamber (4) when the filter bag (7) is cleaned.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920692380.8U CN210495513U (en) | 2019-05-10 | 2019-05-10 | Coal water sedimentation tank capable of automatically collecting coal slime |
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| CN201920692380.8U CN210495513U (en) | 2019-05-10 | 2019-05-10 | Coal water sedimentation tank capable of automatically collecting coal slime |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110180256A (en) * | 2019-05-10 | 2019-08-30 | 华电电力科学研究院有限公司 | A kind of coal water sedimentation pond of automatic collection coal slime and its working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180256A (en) * | 2019-05-10 | 2019-08-30 | 华电电力科学研究院有限公司 | A kind of coal water sedimentation pond of automatic collection coal slime and its working method |
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