CN106731120A - A kind of filter stack chip architecture and laminated filter - Google Patents

A kind of filter stack chip architecture and laminated filter Download PDF

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Publication number
CN106731120A
CN106731120A CN201611040121.4A CN201611040121A CN106731120A CN 106731120 A CN106731120 A CN 106731120A CN 201611040121 A CN201611040121 A CN 201611040121A CN 106731120 A CN106731120 A CN 106731120A
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China
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lamination
filter
runner
stack chip
chip architecture
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CN201611040121.4A
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CN106731120B (en
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杨培岭
马子萱
任树梅
张重
张钟莉莉
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China Agricultural University
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China Agricultural University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/44Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/46Edge filtering elements, i.e. using contiguous impervious surfaces of flat, stacked bodies

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

The present invention provides a kind of filter stack chip architecture, the structure includes the lamination of annular, the lamination is provided with runner of the section in Pentagram shape, and the cross sectional shape of the runner is the Pentagram shape using the centre three/part in koch fractal curve second order figures.Also propose a kind of laminated filter, including multiple above-mentioned filter stack chip architectures.Filter lamination proposed by the present invention can improve the filter efficiency of filter, effectively provide the settling zone of more sand grains, wide using scope;Lamination section provides bigger area of passage on the premise of original filtering accuracy is ensured, the loss of flood peak on the premise of by same volume water produced by it is to a certain extent less than traditional lamination;The present invention, using to chitin fiber, condenses the microorganism for suspending in the making of lamination, and biofiltration is played a part of while physical filtering, has the effect of disinfection concurrently.

Description

A kind of filter stack chip architecture and laminated filter
Technical field
The present invention relates to agricultural water-saving irrigation technical field, especially with respect to a kind of filter stack chip architecture and stacked mistake Filter.
Background technology
The shortage of water resource has turned into global problem, and this problem is to grain security, economic security, Population safety etc. A series of problem generates tremendous influence.By long-term research and development, slight irrigation has become the irrigation side of present popularization Formula, this mode with considerably reducing Water Consumption in Agriculture, but it is more strict for the requirement of water quality.If All kinds of impurity in irrigation water can not be effectively removed, the quality of water can be had a strong impact on, cause the blocking of equipment at different levels, it is serious The paralysis of whole irrigation system can be caused and scrapped.By taking the Hetao Irrigation District for quoting Huanghe water as an example, the major impurity in its diversion It is silt, whether successfully the filter efficiency of silt just becomes irrigation system key.By the performance test research of filter It was found that, several filters have certain limitation for the filtering of silt in existing irrigation system, main removal bulky grain Silt, and the less floating type silt of particle diameter cannot be removed effectively.The filter efficiency of laminated filter is one and urgently solves Problem certainly, and lamination is the core of laminated filter, therefore the most effectual way of transformation laminated filter is exactly to lamination Transformed.
Because applying for laminated filter is relatively broad in middle-size and small-size peasant household, substantial amounts of scientific research scholar attempts from many aspects To solve the efficiency of filter, although the research for internal laminations does not launch also on a large scale, but also achieves one A little achievements.Also there are many experts and scholars to propose many prioritization schemes for lamination at present, such as:Control in Beijing engineering research (the application publication numbers such as institute Li Yonghua:CN104888511A a kind of design for changing laminate shape) is disclosed, the design passes through will Traditional disc type lamination transform the outer rim length of side that petal type lamination is effectively increased lamination as, at the same time increased runner Quantity, the region of sediment settlement is increased to a certain extent, but because the structure of its runner is relatively simple, although increased Efficiency and precision of the runner quantity still to filtering do not have clear improvement.
And for example China Water Resources & Hydropower Science Research Institute Wu Wen bravely waits (application publication number:CN104785003 A) disclose one The new grade cross section of fluid channel filter lamination of kind, the runner of its annular lamellar body is semi-circular runner, and inside and outside cross section of fluid channel is partly Footpath is identical, and traditional lamination high energy consumption and problem not easy to clean are overcome in a sense, but filter efficiency is relatively low.
The content of the invention
The present invention provides a kind of filter stack chip architecture for overcoming above mentioned problem or solving the above problems at least in part And laminated filter, can effectively improve filter efficiency, reduce the brought loss of flood peak of filtering.
According to an aspect of the present invention, there is provided a kind of filter stack chip architecture, the structure includes the lamination of annular, described Lamination is provided with runner of the section in Pentagram shape.
Further, the cross sectional shape of the runner is using the centre 1/3rd in koch fractal curve second order figures The Pentagram shape divided.
Further, each wedge angle of the cross section of fluid channel carries out rounding.The wedge angle of the cross section of fluid channel uses rounding The design at angle, is easy to process the runner of accurate size;In addition, the flushing that the radian of fillet is conducive to improving when backwashing is imitated Rate, and sharp corner easily stockpiles the impurity for being difficult to clean.
Further, the outside sectional dimension of the runner is more than the sectional dimension on the inside of it.The cross section of fluid channel of the lamination Direction according to filtering is gradually reduced from outside to inner side, is reduced rule and is followed linear equation rule.
Further, it is evenly equipped with runner described in multiple identicals on the lamination.The trend of the runner is respectively with it in institute The tangent line angle for stating edge on the outside of lamination is 67 °.
Further, the both sides up and down of the lamination are equipped with the runner.After multiple lamination superpositions, the upside of lower section lamination The runner in face may be combined into various different new runners from the runner of the downside of top lamination, improve filter efficiency.
Further, the internal diameter of the lamination and the ratio range of external diameter are 0.75-0.8:1, the flow channel length be 20 (± 2)mm。
Further, the material of the lamination mainly includes chitin fiber and polyethylene.It is also cold-resistant including a small amount of plastics Softening agent and organo-arsenic.Wherein, chitin fiber accounts for 12.5%, and polyethylene accounts for 85.9%, in addition it is also necessary to which the plastics for adding 1.0% are resistance to Cold softening agent and 0.6% organo-arsenic.
Further, after the lamination is manufactured, soaked using bacillus subtilis solution.Bacillus subtilis is molten Liquid concentration is preferably 108CFU/g, soak time is preferably 24 hours.
According to another aspect of the present invention, the present invention also proposes a kind of laminated filter, including multiple above-mentioned mistakes Filter lamination.
Based on above-mentioned technical proposal, the invention has the advantages that:
(1) filter lamination proposed by the present invention can improve the filter efficiency of filter, effective to provide more high concentration of sediment The settling zone of particle, it is wide using scope.
(2) the Cross section Design form of lamination of the invention provides bigger mistake on the premise of original filtering accuracy is ensured Flow area, the loss of flood peak on the premise of by same volume water produced by it is to a certain extent less than traditional lamination.
(3) present invention condenses the microorganism for suspending, in physical filtering using to chitin fiber in the making of lamination Play a part of biofiltration simultaneously, have the effect of disinfection concurrently.And after lamination making terminates, the present invention proposes to use The method of bacillus subtilis solution impregnation lamination makes the filter not only can successfully filter physical impurity, while can also be effective The generation for preventing biomembrane, make it flow out water body with the backwash of filter, reduce the biological probability for hindering filtering and significantly Reduce the blocking probability of douche.
Brief description of the drawings
Fig. 1 is the schematic diagram of koch curve construction second order figures;
Fig. 2 is the schematic diagram of the cross section of fluid channel according to the embodiment of the present invention;
Fig. 3 is the schematic diagram of the lamination according to the embodiment of the present invention;
Fig. 4 is enlarged diagram at A in Fig. 3;
Fig. 5 is enlarged diagram at B in Fig. 3;
Fig. 6 is the schematic diagram of the laminated filter according to the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement Example is not limited to the scope of the present invention for illustrating the present invention.
The application is by transforming lamination runner to improve filter efficiency.By Fractal Theory Applications to laminated filter runner Design in, using its complicated geometrical construction for the water source for needing filtering provides the sufficient runner of area and to expand the grains of sand heavy Drop region, the lamination can improve the design conveyance capacity and filter efficiency of filter, effectively intercept tiny silt, together When reduce the loss of flood peak of filter process to a certain extent.
The application is transformed the material of traditional lamination.The material that traditional lamination is used is PP, PP have light weight, Good toughness and the good advantage of chemical resistance, but its dimensional accuracy is low, rigidity is not enough, it may appear that after-contraction phenomenon, hold after the demoulding Easily occur it is aging, become fragile or deform.In long-term filtering, have many sand grains collision is carried out to lamination and cause in runner Portion's many " scar ", the filter efficiency that will cause filter by long-term accumulation is substantially reduced, and it will seriously scrapped.This hair It is bright that chitin fiber and bacillus subtilis solution applied into the making of lamination, enable filter while carrying out physics mistake Filter and biofiltration.
In the one embodiment according to the application, with reference to Fig. 3, Fig. 4 and Fig. 5, there is provided a kind of filter stack chip architecture, should Structure includes the lamination of annular, and the lamination is provided with runner of the section in Pentagram shape.
When the runner uses moderate-length, preferable filter effect can be reached.Too short runner can cause filtering It is insufficient;Long runner can cause the difficulty for filtering and backwashing again.The present invention is by the model to various flow channel lengths Simulation calculates adaptability flow channel length scope the most excellent, it is believed that it can be reduced while filter effect is ensured The unnecessary loss of flood peak.
The cross sectional shape of the runner is five using the centre three/part in koch fractal curve second order figures Angle starriness.As shown in Fig. 2 the shape has good self-similarity nature, the complexity of lamination can be improved, improve filtering Efficiency.
The major design theory of the cross sectional shape of the runner is launched based on the koch curves in point shape, koch curves Main thought be:Three sections, i.e. one line segment of trisection are cut at the left and right 1/3rd of straight line;It is equilateral with one again Triangle substitutes the center section that the first step divides trisection;And on every straight line, repeat previous step, the structure of koch curves Make and refer to Fig. 1.
On the premise of the inscribed circle for ensureing lamination cross section of fluid channel is constant, the complexity in section is constructed using koch fractal curves Shape, using its complicated self-similar structure, can reach two purposes:
First, increase area of section.Because the loss of flood peak is fluid machinery loss of energy, before speed is constant Put, make the ratio of the length of runner and area of section as far as possible small, the purpose of the loss of flood peak is reduced to reach.When fractal curve When introducing is effectively increased the area of overflow section, make the current of identical speed in the same time, make inflow-rate of water turbine greatly increase, The loss of flood peak is effectively reduced, filtering energy consumption is diminished, filtered more economical.
Second, improve the complexity of runner.The runner of traditional lamination only has three wedge angles, and filtering at base angle two is sunk Shallow lake poor-performing, in the case where a large amount of silts are poured in and is not suitable for the sedimentation of silt, and the section carried out using fractal curve Construction can effectively increase the low regime in runner, and the koch curves selected by the present invention utilize the self-similarity of triangle Matter, twice is increased by the wedge angle region on section, because the cardinal principle of laminated filter is to make sediment settlement using low regime The effect of filtering is reached, low speed wedge angle is taken in this invention increases to five by three so that low regime area increases, by benefit Base angle is ignored at relatively low two, and sediment settlement rate of the invention is approximately three times of traditional lamination runner.It is sinking for more grains of sand Product is provided may.
Each wedge angle of the cross section of fluid channel carries out rounding.The wedge angle of the cross section of fluid channel is set using rounding Meter, is easy to process the runner of accurate size;In addition, the radian of fillet is conducive to improving flush efficiency when backwashing, and it is sharp Easily the impurity for being difficult to clean is stockpiled at angle.
The outside sectional dimension of the runner is more than the sectional dimension on the inside of it.The cross section of fluid channel of the lamination is according to filtering Direction be gradually reduced from outside to inner side, reduce rule follow linear equation rule.
Runner described in multiple identicals is evenly equipped with the lamination.The trend of the runner is respectively with it outside the lamination The tangent line angle of side edge is 67 °.
The both sides up and down of the lamination are equipped with the runner.After multiple lamination superpositions, the stream of the upper side of lower section lamination Road may be combined into various different new runners from the runner of the downside of top lamination, improve filter efficiency.
The internal diameter of the lamination is preferably 0.75-0.8 with the ratio range of external diameter:1, the flow channel length is about 20 (±2)mm。
The material of the lamination mainly includes chitin fiber and polyethylene.Also include a small amount of plastics cold-resistant flexible agent and Organo-arsenic.Wherein it is preferred to, chitin fiber accounts for 12.5%, and polyethylene accounts for 85.9%, in addition it is also necessary to which the plastics for adding 1.0% are resistance to Cold softening agent and 0.6% organo-arsenic.Chitin fiber is made by the method for wet drawing.
After the lamination is manufactured, soaked using bacillus subtilis solution.Bacillus subtilis solution concentration Preferably 108CFU/g, soak time is preferably 24 hours, and the making of lamination is completed after immersion.
Laminate of the invention not only avoid a series of inconvenience that the pp used in traditional laminate is brought, At the same time and flocks suspend to a certain extent microorganism and the grains of sand, make it easier to precipitate and filtered, moreover it is possible to The aggregation of microorganism processed is enough reached, the biomembrane to form sheet is prevented, promotes the decomposition and dead effect of microorganism.
The slow release that the shitosan microbial inoculum being mixed into runner first can continue during filtering, in long-term filtering The middle stroke for suppressing biomembrane, the decomposition of effective acceleration biomembrane, makes it fully to be peeled off in filter process, with flushing Current outflow filter together;Secondly the dipping of lamination is carried out using the drip irrigation of flora in irrigation water, can be effectively pressed down The knot group of flora processed simultaneously makes it can only settle and can not be attached on lamination, be able to will be come off in backwash using this advantage The blocking material of sedimentation goes out filter.Offering convenience for the use of irrigation system for high degree, reduces douche and is held The pressure received.
The present invention also proposes a kind of laminated filter, as shown in fig. 6, including multiple above-mentioned filter stack chip architectures.
Finally, the present processes are only preferably embodiment, are not intended to limit the scope of the present invention.It is all Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc. should be included in protection of the invention Within the scope of.

Claims (10)

1. a kind of filter stack chip architecture, it is characterised in that the lamination including annular, the lamination is provided with section in five-pointed star The runner of shape.
2. a kind of filter stack chip architecture according to claim 1, it is characterised in that the cross sectional shape of the runner is for should With the Pentagram shape of the centre three/part in koch fractal curve second order figures.
3. a kind of filter stack chip architecture according to claim 1, it is characterised in that each wedge angle of the cross section of fluid channel Carry out rounding.
4. a kind of filter stack chip architecture according to claim 1, it is characterised in that the outside sectional dimension of the runner More than the sectional dimension on the inside of it.
5. a kind of filter stack chip architecture according to claim 1, it is characterised in that multiple phases are evenly equipped with the lamination The same runner, the tangent line angle of edge is 67 ° to the trend of the runner on the outside of the lamination with it respectively.
6. a kind of filter stack chip architecture according to claim 1, it is characterised in that the both sides up and down of the lamination are all provided with There is the runner.
7. a kind of filter stack chip architecture according to claim 1, it is characterised in that the internal diameter of the lamination and external diameter Ratio range is 0.75-0.8:1.
8. a kind of filter stack chip architecture according to claim 1, it is characterised in that the material of the lamination is poly- including shell Sugared fiber, polyethylene, the agent of plastics cold-resistant flexible and organo-arsenic.
9. a kind of filter stack chip architecture according to claim 1, it is characterised in that after the lamination is manufactured, profit Soaked with bacillus subtilis solution.
10. a kind of laminated filter, including multiple filter stack chip architectures as described in claim 1-9.
CN201611040121.4A 2016-11-11 2016-11-11 A kind of filter stack chip architecture and laminated filter Active CN106731120B (en)

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Cited By (3)

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CN107510973A (en) * 2017-08-02 2017-12-26 中国农业大学 A kind of filter lamination
CN108745214A (en) * 2018-07-11 2018-11-06 江苏揽山环境科技股份有限公司 A kind of reaction system for realizing the heat transfer of chaos state gas-liquid mass transfer
CN109357854A (en) * 2018-11-01 2019-02-19 中国农业大学 A kind of integrated evaluating method of laminated filter performance

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107510973A (en) * 2017-08-02 2017-12-26 中国农业大学 A kind of filter lamination
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CN108745214A (en) * 2018-07-11 2018-11-06 江苏揽山环境科技股份有限公司 A kind of reaction system for realizing the heat transfer of chaos state gas-liquid mass transfer
CN109357854A (en) * 2018-11-01 2019-02-19 中国农业大学 A kind of integrated evaluating method of laminated filter performance
CN109357854B (en) * 2018-11-01 2020-05-12 中国农业大学 Comprehensive evaluation method for performance of laminated filter

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