CN103175710B - Continuous grit chamber sampler - Google Patents
Continuous grit chamber sampler Download PDFInfo
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- CN103175710B CN103175710B CN201310064864.5A CN201310064864A CN103175710B CN 103175710 B CN103175710 B CN 103175710B CN 201310064864 A CN201310064864 A CN 201310064864A CN 103175710 B CN103175710 B CN 103175710B
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Abstract
The invention relates to a continuous grit chamber sampler which is used for measuring and evaluating the sand removal rate of the grit chamber, and comprises a settling tank, wherein the settling tank is a cylindrical container, and the bottom of the settling tank is provided with a water inlet; the water inlet is connected along the tangential direction of the base circle of the settling tank; the input raw water forms a circulation flow state, so that the sand particles in the raw water are dropped and collected in a sand hopper under the action of the centrifugal force and gravity; a sliding abrasive cone which is coaxial with the settling tank and of which the cone bottom diameter is smaller than the diameter of the cylinder of the settling tank is arranged at the lower end in the settling tank cavity, so that the circulation flow state in the settling tank forms a flow state gradient difference from bottom to top, and the settling of the sand particles of different particle sizes is benefited. The settled raw water is continuously discharged from the upper separated water outlet groove, and the sand particles settled to the sand collecting hopper are collected and measured. The continuous sampler can be used for measuring the total sand amount of the inflowing water of the grit chamber and the sand content of each size grading and can measure the total sand content of escaped effluent of the grit chamber and the sand content of each size grading, and the measured difference of the sand amount is the sand removal rate of the grit chamber.
Description
Technical field
The present invention relates to the servicing unit in a kind of pre-treating process for sewage, specifically belong to the continuous sampler of measuring and evaluating settling pit desanding effect.
Background technology
Settling pit is, in sewage treatment process, former water is carried out to pretreated structures, and its function is to utilize physical principle to remove the larger inorganic particle of proportion in sewage.Sewage unavoidably can be sneaked into silt particle in moving, flow and collecting process.If the sand in sewage not sedimentation separation is in advance removed, affect the operation of subsequent processing device.Most importantly wear and tear pump, stop up pipe network, disturb and even destroy biochemical processing process process.Settling pit is mainly used in removing particle diameter in sewage and is greater than 0.2mm, and density is greater than the sand grains of 2.65t/ cubic meter, to protect the facility such as pipeline, valve avoid wearing and tearing and block.Its principle of work is taking gravity separation as basis, therefore should control the water inlet flow velocity of settling pit, heavy inorganic particle is sunk, and organic suspension particle can be taken away with current.Settling pit mainly contains horizontal-flow grit chamber, aerated grit chamber, rotational flow grit chamber etc.
At present, the mainly test based on to Inlet and outlet water sand cut of evaluation to settling pit except sand coarse aggregate ratio, its method of testing mainly contains suspension sampling method, immersion method and water delivering orifice tamisage etc., but three kinds of method of testings all exist very large deficiency, as ignores the difference of sand grains and suspension; Process operation complexity, sampling not representative, can not reflect sand grains size grading; Screen cloth easily stops up.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide a kind of settling pit continuous sampler, for measuring and evaluate settling pit except sand coarse aggregate ratio.
The technical solution used in the present invention is as follows: a kind of settling pit continuous sampler, comprise subsider, and described subsider is hydrostatic column, its bottom is provided with water inlet; Described water inlet is justified tangential direction connection at the bottom of subsider; Below the water inlet of subsider, water inlet flow channel is set, described water inlet flow channel is a cambered plate; In sedimentation vallecular cavity, lower end arranges sliding abrasive cone, and described sliding abrasive cone is one, and coaxial and cone bottom diameter is less than the cone of subsider cylinder diameter with subsider central axis; In the cylindrical lower end of subsider, sand collecting hopper is set, described sand collecting hopper be one with the isometrical reverse taper of subsider right cylinder; At the sand collecting hopper vertex of a cone, place offers sand removing hole, and described sand removing hole is by a valve gauge tap; Above subsider cylinder is endoceliac, be separated out an effluent trough, water is strained with a kind of overflow weir in the upper end of described effluent trough and subsider dividing plate, and described overflow weir is a kind of serration plate, mounting hole is set for regulating the level of crest of weir on plate; In effluent trough, set out the mouth of a river and evacuation port, for emptying of continuous effluent and final outflow water groove.The water inlet of described subsider is connected with submersible pump water delivering orifice by after flow control valve, and described submerged pump water-sucking mouth is placed in the turbulent region of settling pit inlet/outlet canal.
As shown from the above technical solution:
The former water that submersible pump extracts desired flow after by flow control valve is input in subsider, because water inlet is and circle tangential direction setting at the bottom of subsider, the former water of input forms circulation fluidised form, and sand grains in former water is fallen along cell wall under the effect of centrifugal force and gravity.Because sliding abrasive cone is near water inlet, make the circulation fluidised form in subsider form fluidised form gradient from bottom to top, this fluidised form gradient difference more contributes to the sedimentation of different-grain diameter sand grains.Due to covering of water inlet flow channel and sliding abrasive cone, be deposited to sand water in sand collecting hopper and avoided the interference of circulation fluidised form.Sand settling takes out and measures in good time after sand collecting hopper.Former water in subsider flows into effluent trough from top overflow weir and is discharged by water delivering orifice after sedimentation.This continuous sampler can be used for measuring total sand cut of settling pit water inlet and the sand cut of each size grading, also can measure total sand cut of settling pit water outlet escape and the sand cut of each size grading, and the difference that both measure is settling pit except sand coarse aggregate ratio.
Brief description of the drawings
Fig. 1 is the main TV structure schematic diagram of the present invention.
Fig. 2 is plan structure schematic diagram of the present invention.
Fig. 3 is overflow plate structural representation of the present invention.
Fig. 4 is principle of work schematic diagram of the present invention.
Embodiment
As shown in Figure 1, 2, continuous sampler comprises water inlet 3, subsider 4, sliding abrasive cone 5, sand collecting hopper 6, sand removing hole 7, effluent trough 8, overflow weir 9, water delivering orifice 10, evacuation port 11 and water inlet flow channel 12.Subsider 4 is hydrostatic column, its volume 0.8m
3.Water inlet 3 connects along 4 end of subsider circle tangential direction, and the below, water inlet of subsider 4 arranges water inlet flow channel 12.Curved of the bottom surface structure of water inlet flow channel 12, with the subsider inwall of relevant position, bottom surface and the two sides of sliding abrasive cone face formation runner of water inlet flow channel 12.In subsider 4 chambeies, bottom arranges the sliding abrasive cone 5 that coaxial and cone bottom diameter is less than cylinder diameter.The cone bottom diameter of sliding abrasive cone is than the little 200mm of subsider body diameter, and its cone angle is 120 °.
Subsider 4 bottoms arrange the back taper sand collecting hopper 6 isometrical with the right cylinder of subsider 4.The volume of sand collecting hopper is 0.2m
3, its cone angle is 75 °.Sand collecting hopper 6 vertex of a cone places arrange sand removing hole 7, and in subsider 4 chambeies, top is separated to form effluent trough 8, and subsider 4 arranges overflow weir 9 with the upper end of effluent trough 8 dividing plates, and effluent trough 8 sets out the mouth of a river 10 and evacuation port 11.Overflow weir 9 is serration plate, mounting hole is set for regulating the level of crest of weir on plate.The water inlet of subsider is connected with submersible pump 1 water delivering orifice by flow control valve 2 is rear, and submerged pump water-sucking mouth is placed in the turbulent region 13 of settling pit inlet/outlet canal.
Specific works process as shown in Figure 4, submersible pump 1 is input in subsider 4 by the former water of the rear extraction desired flow of flow control valve 2, because water inlet 3 is and the circle tangential direction setting of 4 end of subsider, the former water of input forms circulation fluidised form, and sand grains in former water is fallen along cell wall under the effect of centrifugal force and gravity.Because sliding abrasive cone 5 is near water inlet 4, make the circulation fluidised form in subsider 4 form fluidised form gradient from bottom to top, this fluidised form gradient difference more contributes to the sedimentation of different-grain diameter sand grains.Due to covering of water inlet flow channel 12 and sliding abrasive cone 5, be deposited to sand water in sand collecting hopper 6 and avoided the interference of circulation fluidised form.Sand settling is measured to the rear in good time taking-up of sand collecting hopper 6.Former water in subsider 4 flows into effluent trough 8 from top overflow weir 9 and is discharged by water delivering orifice 10 after sedimentation.This continuous sampler can be used for measuring total sand cut of settling pit water inlet and the sand cut of each size grading, also can measure total sand cut of settling pit water outlet escape and the sand cut of each size grading, and the difference that both measure is settling pit except sand coarse aggregate ratio.
In the present invention, the flow that the former water that submersible pump 1 extracts enters subsider 4 after flow control valve 2 regulates is crucial, and this is to ensure that former water sets up suitable annular fluidised form subsider 4 is interior, makes the complete sedimentation of sand grains.
The present invention is the key device that serial sampling sedimentation is calculated sand grains clearance, and for measuring settling pit desanding effect, its test result is accurate, simple and quick.
Above are only embodiments of the invention, to one skilled in the art, the present invention has multiple change and variation.Allly within invention thought of the present invention and principle, make any amendment, be equal to replacement, improve etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a settling pit continuous sampler, is characterized in that: comprise subsider, described subsider is hydrostatic column, and its bottom is provided with water inlet; Described water inlet is justified tangential direction connection at the bottom of subsider; Below the water inlet of subsider, water inlet flow channel is set; In sedimentation vallecular cavity, bottom arranges sliding abrasive cone, and described sliding abrasive cone is cone-shaped, and the coaxial and cone bottom diameter of the central axis of its central axis and subsider is less than subsider cylinder diameter; In the cylindrical lower end of subsider, sand collecting hopper is set, described sand collecting hopper be one with the isometrical reverse taper of subsider right cylinder; At the sand collecting hopper vertex of a cone, place offers sand removing hole, and described sand removing hole is by a valve gauge tap; Above subsider cylinder is endoceliac, be separated out an effluent trough, in effluent trough, set out the mouth of a river and evacuation port, for emptying of continuous effluent and final outflow water groove; The bottom of described water inlet flow channel is arc surfaced structure, with the subsider inwall of relevant position, bottom surface and the two sides of sliding abrasive cone face formation runner of water inlet flow channel; The upper end of described effluent trough and subsider dividing plate is established overflow weir and is strained water, and described overflow weir is serration plate, mounting hole is set for regulating the level of crest of weir on plate.
2. settling pit continuous sampler according to claim 1, is characterized in that: the water inlet of described subsider is connected with submersible pump water delivering orifice by after flow control valve, and described submerged pump water-sucking mouth is placed in the turbulent region of settling pit inlet/outlet canal.
3. settling pit continuous sampler according to claim 1, is characterized in that: the volume of described subsider is not less than 0.4m
3.
4. settling pit continuous sampler according to claim 1, is characterized in that: the cone bottom diameter of described sliding abrasive cone is than the little 180-220mm of subsider body diameter, and its cone angle is 110 °～120 °.
5. settling pit continuous sampler according to claim 1, is characterized in that: the volume of described sand collecting hopper is not less than 0.15m
3, its cone angle is 65 °～75 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310064864.5A CN103175710B (en) | 2013-02-28 | 2013-02-28 | Continuous grit chamber sampler |
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| CN201310064864.5A CN103175710B (en) | 2013-02-28 | 2013-02-28 | Continuous grit chamber sampler |
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| CN103175710B true CN103175710B (en) | 2014-12-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104181013B8 (en) * | 2014-09-10 | 2017-04-12 | 四川农业大学 | Atmospheric dry deposition simple collection device |
| CN104655453B (en) * | 2015-02-10 | 2017-07-07 | 浦华环保有限公司 | A kind of silt particle sampling system and its sampling method |
| CN106153584A (en) * | 2016-08-15 | 2016-11-23 | 力合科技（湖南）股份有限公司 | A kind of liquid transparency detection device |
| CN107165628B (en) * | 2017-06-26 | 2021-05-07 | 中国石油天然气股份有限公司 | Annular multi-stage sampling type sand measuring instrument |
| CN114199715B (en) * | 2021-12-09 | 2023-01-24 | 国投信开水环境投资有限公司 | Continuous sewage sand content acquisition device and test method |
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| KR20010009598A (en) * | 1999-07-12 | 2001-02-05 | 류재근 | Sludge Separation in Aeration Tank Type Livestock Wastewater Treatment Facility |
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Address after: 230088 No. 91 science Avenue, hi tech Zone, Anhui, Hefei Patentee after: Cecep Guozhen Environmental Protection Technology Co.,Ltd. Address before: 230088 No. 91 science Avenue, hi tech Zone, Anhui, Hefei Patentee before: Anhui Guozhen environmental protection and energy saving Technology Co.,Ltd. |
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