CN203683284U - Low-pressure filter - Google Patents

Low-pressure filter Download PDF

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Publication number
CN203683284U
CN203683284U CN201420061925.2U CN201420061925U CN203683284U CN 203683284 U CN203683284 U CN 203683284U CN 201420061925 U CN201420061925 U CN 201420061925U CN 203683284 U CN203683284 U CN 203683284U
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CN
China
Prior art keywords
filter
liquid
cone
central tube
low
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Expired - Fee Related
Application number
CN201420061925.2U
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Chinese (zh)
Inventor
赵洪贵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Flies Bole Ingegneria Ambientale Srl
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Wuhan Flies Bole Ingegneria Ambientale Srl
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Priority to CN201420061925.2U priority Critical patent/CN203683284U/en
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Publication of CN203683284U publication Critical patent/CN203683284U/en
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Abstract

The utility model discloses a low-pressure filter, comprising a stoste supply device, a dosing device, a gas-liquid separation tank and a filter body, wherein an aggregate cone, a center cylinder, a water distributor, a cant board, a filter packing layer and an upper sieve plate are arranged inside the filter body; a liquid inlet, a liquid outlet and a mud discharge hole are formed in the filter body; the stoste supply device is connected with the gas-liquid separation tank through a pipe; the dosing device is connected with the pipe between the stoste supply device and the gas-liquid separation tank through the pipe; the gas-liquid separation tank is connected with the liquid inlet of the filter body through the pipe; the liquid inlet is connected to a liquid inlet port at the upper part of the center cylinder through the pipe; a liquid outlet port is formed in the lower part of the center tube; the aggregate cone is arranged at the bottom of the filter body; the mud discharge hole is formed above the aggregate cone; the center cylinder is arranged above the aggregate cone; the water distributor and the cant board are arranged above the liquid outlet port at the lower part of the center cylinder. The liquid filter is high in filtering accuracy and easy to backwash.

Description

A kind of low-pressure filter
Technical field
The utility model relates to a kind of strainer, especially a kind of low-pressure filter.
Background technology
In industrial production, there is a lot of liquid need to carry out solid-liquid separation, for example:
(1) sulfurous iron ore, flue gas during smelting sulfuric acid processed, purification section can discharge a large amount of diluted acids, and this part diluted acid contains a large amount of slags cannot reuse spray flue gas, needs solid-liquid separation slag and clear acid.In addition, outer row's diluted acid need to add lime neutralizing treatment, and after neutralization, producing a large amount of gypsum tailings also needs solid-liquid separation.
(2) in hydrometallurgy, acid solution leaching low grade ore, the acid solution after leaching contains a large amount of slags and needs solid-liquid separation.Lean solution in hydrometallurgy and your liquid also need solid-liquid separation in addition.
(3) in colliery industry, mining wastewater contains slag and coal dust, and coal washing water contains a large amount of cinders, and these all need solid-liquid separation.
(4), at Mineral Processing Industry, beneficiation wastewater also needs solid-liquid separation.
(5), in titanium white production, spray plain boiled water and dense spent acid need the titanium dioxide in solid-liquid separation waste acid recovery.
(6), in chlor-alkali industry, primary refined brine needs solid-liquid separation.
(7) liquid of other industry need to be used solid-liquid separation.
For these liquid, the solid-liquid separating method of present stage has following several:
(1) with what settling tank processing continuously, the method floor space is large, the difficult cleaning of mud, and outlet effect is poor.
(2) with swash plate, inclined tube settler processing, the method outlet effect is poor, is difficult to reuse or qualified discharge.
(3) with the method processing of thickener sedimentation, the method underflow density is high, but supernatant liquor is more muddy, need to again install filter plant additional, and thickener entirety floor space is huge, invests higher and is difficult to mobile.
(4) working medium strainer, as medium filters such as quartz sand, manganese sand, hard coals, the method outlet effect is good, but because liquid is the feed liquor that from top to bottom flows, liquid is wrapped in suspended solid and enters filler and be easy to stop up, and the water environment capacity of packing layer is very little, difficult backwash cleaning.As use the supporting medium filter of large-scale subsider, and flow process complexity, floor space is large.
(5) film filter, comprises surface film strainer and deep layer film filter, and the method shortcoming is that suspended substance is easy to stopping up film, and is difficult to backwash cleaning, and film will often be changed, and use cost is very high.
Utility model content
The purpose of this utility model is to overcome defect of the prior art, and a kind of novel low-pressure filter is provided, and this liquid filter filtering accuracy is high, easily backwash.
A kind of low-pressure filter, comprise stoste generator, chemicals dosing plant, knockout drum, filter body, gather materials cone, central tube, water distributor and swash plate, filter packing layer, upper sieve plate are set in described filter body, described filter body is provided with fluid inlet, liquid outlet, mud discharging mouth, wherein:
Described stoste generator connects described knockout drum by pipeline, described chemicals dosing plant connects the pipeline between described stoste generator and described knockout drum by pipeline, described knockout drum connects the fluid inlet of described filter body by pipeline, described fluid inlet connects the feed liquor port on described central tube top by pipeline, described central tube bottom arranges fluid port;
Cone gathers materials described in the bottom of described filter body arranges, below the described cone that gathers materials, be provided with mud discharging mouth, above the described cone that gathers materials, described central tube is set, above the fluid port arranging in described central tube bottom, described water distributor and swash plate are set, described filter packing layer is set above described central tube and described water distributor and swash plate, described upper sieve plate is set above described filter packing layer, above the top of described filter body and described upper sieve plate, liquid outlet is set.
Preferably, the cone that gathers materials described in is also provided with exhaust-valve.
Preferably, the height of described filter packing layer is 0.5~1m.
Preferably, the fluid inlet height of described filter body is greater than the height of the liquid outlet of described filter body, and the difference of height is more than or equal to 0.5m.
The beneficial effects of the utility model are, use this low-pressure filter filter liquide, in meeting industrial production demand, have that technical process is simple, facility investment is few, floor space is little, filtering accuracy is high, stable water outlet is high, without advantages such as power consumptions, can make stoste suspended substance be down to below 10mg/l.And the cycle of operation of strainer is long, and belong to low press filtration, only need the liquid level of strainer fluid inlet to exceed the liquid outlet 50cm water column feed liquor that can flow automatically, do not need electricity charge investment, overall economic efficiency is high, is extremely suitable for industrial application.
Brief description of the drawings
Fig. 1 is the structural representation of low-pressure filter provided by the utility model.
In Fig. 1, the parts of each label representative are as follows:
1, stoste generator, 2, chemicals dosing plant, 3, knockout drum, 4, filter body, 41, fluid inlet, 42, liquid outlet, 43, mud discharging mouth, 5, the cone that gathers materials, 6, central tube, 7, water distributor and swash plate, 8, filter packing layer, 9, upper sieve plate.
Embodiment
Below principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
In a concrete embodiment, a kind of low-pressure filter, comprise stoste generator 1, chemicals dosing plant 2, knockout drum 3, filter body 4, gather materials cone 5, central tube 6, water distributor and swash plate 7, filter packing layer 8, upper sieve plate 9 are set in described filter body, and described filter body 4 is provided with fluid inlet 41, liquid outlet 42, mud discharging mouth 43.
Described stoste generator 1 connects described knockout drum 3 by pipeline, described chemicals dosing plant 2 connects the pipeline between described stoste generator 1 and described knockout drum 3 by pipeline, described knockout drum 3 connects the fluid inlet 41 of described filter body 4 by pipeline, described fluid inlet 41 connects the feed liquor port on described central tube 6 tops by pipeline, described central tube 6 bottoms arrange fluid port.Cone 5 gathers materials described in the bottom of described filter body 4 arranges, below the cone 5 that gathers materials, be provided with mud discharging mouth 43, above the described cone that gathers materials, described central tube 6 is set, above the fluid port arranging in described central tube 6 bottoms, described water distributor and swash plate 7 are set, above described central tube 6 and described water distributor and swash plate 7, described filter packing layer 8 is set, described upper sieve plate 9 is set above described filter packing layer, above the top of described filter body 4 and described upper sieve plate 9, liquid outlet 42 is set.
By low-pressure filter provided by the utility model, the stoste that stoste generator 1 provides is adding after a small amount of flocculation agent by chemicals dosing plant 2, isolates gas and discharges through knockout drum 3; Add the gravity flow of stoste after flocculation agent and enter filter body 4, enter central tube 6 through filter body fluid inlet 41, in central tube, realize mixing of stoste and flocculation agent; Stoste baffling after mixing flows from bottom to top, and after water distributor and swash plate 7 sedimentations, oarse-grained suspended substance down lands, and after the cone 5 cone collection mud that gather materials, is deposited on cone base; Clear liquid upwards flows into filter packing layer 8, through filling adsorption interception fine particle thing; After interception, suspended substance forms filter cake, and filter cake also has interdiction capability; After filler interception, stoste becomes as clear as crystal, enters liquid outlet 42 by upper sieve plate 9, completes whole filtration work.
Stoste needs to add a certain amount of flocculation agent before entering filter body 4, can be by described chemicals dosing plant 2 dosings.For neutrality or meta-alkalescence and there is the liquid of the difficult sedimentation of colloid, before adding flocculation agent, also need to add coagulating agent.
The filler of the described filter packing layer 8 in filter body 4 is selected light plastic particle filler or other fillers, includes but not limited to the medium fillers such as quartz sand, manganese sand, hard coal.The loading height of filler is 0.5~1.0m.
Because described central tube 6 bottoms arrange fluid port, after the mixing of stoste and flocculation agent, flow out, enter into the region of paddling in filter body 4.And water level raises, reduce the impact that causes filter packing to pollute because of liquid suspension from bottom to top.
Preferably, the cone 5 that gathers materials described in is also provided with exhaust-valve.Stoste entered after strainer operation for some time, cone base sedimentation a large amount of mud, and some not finely ground particle substances of free settling in filler, are wrapped up, it is large that inlet hydraulic becomes, at this moment need discharge bottom mud, in discharge mud, liquid level fast-descending in strainer, the clear liquid of filter top carries out once flushing to packing layer, and this process is that blowdown mud is realized automatic backwash.
Preferably, the fluid inlet 41 of described filter body 4 is highly greater than the height of the liquid outlet 42 of described filter body 4, and the difference of height is more than or equal to 0.5m.Filter body can adopt low pressure feed liquor mode, only needs fluid inlet liquid level can realize gravity flow feed liquor than the high 50cm of liquid outlet, also can use the pump feed liquor of low lift.
Effect example
Effect example 1
Jinchang, Gansu flue gas during smelting sulfuric acid processed, can produce the dirty acid of a part in clean-up stage, and this factory adopted circular cone subsider to process this part dirty acid originally, but treatment effect is not good, now adopts New Low Voltage filter process.
To contain slag, AS and heavy metal-polluted acid and be filter inner filtration from flowing into, and before entering to filter, add a small amount of polyacrylamide flocculant, the liquid after filtration is as clear as crystal, is back to clean-up stage spray.
When a part of mud of strainer operation for some time bottom accumulation, in packing layer, adsorb fine particle simultaneously, when filter pressure increases, needed to open bottom blow-down Valved discharge mud, supernatant liquid to filler backwash once, discharges complete strainer and continues operation simultaneously.
Operation result is as follows:
Unit: mg/L
Effect example 2
Guizhou phosphate fertilizer plant, produces thiamines, has one tail washing and spraying water to need solid-liquid separation, and this factory adopts this New Low Voltage strainer to filter.。
The washings that contains slag, coal ash has been to filter inner filtration from flowing into, before entering to filter, has added a small amount of polyacrylamide flocculant, the liquid after filtration is as clear as crystal, is back to clean-up stage spray.
When a part of mud of strainer operation for some time bottom accumulation, in packing layer, adsorb fine particle simultaneously, when filter pressure increases, needed to open bottom blow-down Valved discharge mud, supernatant liquid to filler backwash once, discharges complete strainer and continues operation simultaneously.
Unit: mg/L
Effect example 3
Hunan solution of gold smelting plant, has one dirty sour neutralizing treatment in production, after processing, solution produces a large amount of suspended substances after electrochemical treatment, needs solid-liquid separation.This factory selects New Low Voltage strainer to process this part electrochemistry waste water.
The electrochemistry liquid that contains slag, ferric oxide has been to filter inner filtration from flowing into, before entering to filter, has added a small amount of polyacrylamide flocculant, the liquid after filtration is as clear as crystal, is back to clean-up stage spray.
When a part of mud of strainer operation for some time bottom accumulation, in packing layer, adsorb fine particle simultaneously, when filter pressure increases, needed to open bottom blow-down Valved discharge mud, supernatant liquid to filler backwash once, discharges complete strainer and continues operation simultaneously.
Unit: mg/L
The foregoing is only preferred embodiments of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (4)

1. a low-pressure filter, comprise stoste generator, chemicals dosing plant, knockout drum, filter body, gather materials cone, central tube, water distributor and swash plate, filter packing layer, upper sieve plate are set in described filter body, described filter body is provided with fluid inlet, liquid outlet, mud discharging mouth, wherein:
Described stoste generator connects described knockout drum by pipeline, described chemicals dosing plant connects the pipeline between described stoste generator and described knockout drum by pipeline, described knockout drum connects the fluid inlet of described filter body by pipeline, described fluid inlet connects the feed liquor port on described central tube top by pipeline, described central tube bottom arranges fluid port;
Cone gathers materials described in the bottom of described filter body arranges, below the described cone that gathers materials, be provided with mud discharging mouth, above the described cone that gathers materials, described central tube is set, above the fluid port arranging in described central tube bottom, described water distributor and swash plate are set, described filter packing layer is set above described central tube and described water distributor and swash plate, described upper sieve plate is set above described filter packing layer, above the top of described filter body and described upper sieve plate, liquid outlet is set.
2. low-pressure filter according to claim 1, is characterized in that: described in the cone that gathers materials be also provided with exhaust-valve.
3. low-pressure filter according to claim 1 and 2, is characterized in that: the height of described filter packing layer is 0.5~1m.
4. low-pressure filter according to claim 1 and 2, is characterized in that: the fluid inlet height of described filter body is greater than the height of the liquid outlet of described filter body, and the difference of height is more than or equal to 0.5m.
CN201420061925.2U 2014-02-11 2014-02-11 Low-pressure filter Expired - Fee Related CN203683284U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104229921A (en) * 2014-09-24 2014-12-24 云南驰宏锌锗股份有限公司 Adsorption tower for purifying acidic wastewater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104229921A (en) * 2014-09-24 2014-12-24 云南驰宏锌锗股份有限公司 Adsorption tower for purifying acidic wastewater
CN104229921B (en) * 2014-09-24 2016-02-10 云南驰宏锌锗股份有限公司 A kind of adsorption tower for purifying dirty acid

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140702

Termination date: 20160211

CF01 Termination of patent right due to non-payment of annual fee