CN102989217B - Filter having squeeze diaphram - Google Patents
Filter having squeeze diaphram Download PDFInfo
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- CN102989217B CN102989217B CN201210537738.2A CN201210537738A CN102989217B CN 102989217 B CN102989217 B CN 102989217B CN 201210537738 A CN201210537738 A CN 201210537738A CN 102989217 B CN102989217 B CN 102989217B
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- filter
- substrate
- compression membrane
- filter medium
- squeeze
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- Filtration Of Liquid (AREA)
Abstract
The invention discloses a filter having a squeeze diaphragm. The filter comprises a squeeze substrate, a filtering medium and a filtering substrate which are superimposed successively and are peripherally connected sealingly. The filtering substrate is provided with a filtrate channel which is communicated with the surface of the filtering medium; a squeeze cavity is arranged at one side facing the filtering medium of the squeeze substrate; an elastic squeeze diaphragm is disposed in the squeeze cavity; the squeeze cavity is divided into a filter cake containing chamber adjacent to the filtering medium and a pressurizing chamber isolated from the filtering medium by the squeeze diaphragm; and the squeeze substrate is also provided with a high-pressure fluid inlet which is communicated with the pressurizing chamber and a feed liquid inlet which is communicated with the filter cake containing chamber. The filter has the beneficial effects that the solid content of the filter cake is higher; the required filter materials are less; operation is more convenient; and work efficiency is higher, for miniature experiments, microscale experiments and the production field.
Description
Technical field
The present invention relates to a kind of filter plant, especially relate to a kind of filter with compression membrane.
Background technology
Filter plant is mainly for carrying out Separation of Solid and Liquid.In many industries, as chemical industry, pharmacy, metallurgy, dyestuff, food, brewage, the industry such as pottery, environmental protection, the design of filtering technique, its object is often in order to obtain the solid in solidliquid mixture, wherein involved principle is: the solidliquid mixture filter medium of flowing through, because solid particle volume is greater than the aperture of filter medium, cannot pass through filter medium, thereby rest on filter medium surface, and pile up gradually to form and filter filter cake, formed filter cake has also played further filtration simultaneously; Liquid is less than the aperture of filter medium due to molecular volume, by filter medium, thereby realize Separation of Solid and Liquid.
For large-scale production operation, selecting of filter plant, mainly take large-scale filter press as main.By large-scale filter press, have that equipment volume is large, treatment effect good, receive the features such as material ability is strong, can carry out fast pace, high yield, production operation capable of circulation.
For small-sized or miniature production operation, as carry out small lot batch manufacture, laboratory material analyzing, the situations such as valuable ingredient of traditional Chinese medicine purification, the large-scale filter press object that often can not fulfil assignment, common way is that large-scale filter press is dwindled according to equal proportion, and it can be applied and small-sized production operation.But in some miniature production operations, because quality of material may only have several kilograms or a few hectogram, even tens grams, be far smaller than the minimum quality of material that it can carry out operation, so cannot be applied.Suction filtration is for small-sized, microscale experiment or production and the filtering scheme of designing, but not only gained filter cake solid content is low, output is few due to suction filtration, and operating process is loaded down with trivial details, time used time is long, cannot be widely used.
Summary of the invention
The invention provides a kind of filter with compression membrane, there is the features such as required filter material is few, gained filter cake solid content is high, simple to operation, be specially adapted to need small-sized, microscale experiment and production.
Filter with compression membrane of the present invention, comprise stacked successively, and squeezing substrate, filter medium and filter substrate that periphery is tightly connected, on described filter substrate, have the filtrate channel being connected with the surface of filter medium, described squeezing substrate with crushing chamber, is provided with flexible compression membrane towards a side of filter medium in crushing chamber; This compression membrane is divided into the filter cake container cavity adjacent with filter medium and the pressurizing chamber isolated with filter medium by crushing chamber; Described squeezing substrate also offers the high-pressure fluid entrance being communicated with described pressurizing chamber, and the feed liquid entrance being communicated with described filter cake container cavity.
When normal use, treat that screening material enters in filter cake container cavity from feed liquid entrance, now filter medium (as filter cloth etc.) touches and treats screening material, because filter medium has by little molecule, hold back macromolecular characteristic, thereby make to treat that the liquid component in screening material passes through filter medium in filter cake container cavity, enter into the filtrate channel in downstream, through the outlet of filtrate channel, discharge, solid particle cannot pass through filter medium, is blocked in filter cake container cavity again.The process for the treatment of is constantly carried out, and the muddy solid particle in filter cake container cavity increases gradually, and compression membrane is extruded distortion, fits in gradually laminating cambered surface.When slimy solid is full of filter cake container cavity, stop treating sending into of screening material, cut off feed liquid entrance, make in filter cake container cavity now in semitight state, so-called semitight state refers to can be by filter medium except liquid, and other materials all cannot be by other any part turnover filter cake container cavities in filter cake container cavity.
Now enter the squeezing stage.Start compressed gas source or high-pressure water, Compressed Gas or highly pressurised liquid enter pressurizing chamber through high-pressure fluid entrance.Along with the pressure in pressurizing chamber raises gradually, the compression membrane being now recessed in pressurizing chamber due to the solid particle extruding being subject in filter cake container cavity is rebounded gradually.Muddy solid in filter cake container cavity is because be subject to the extruding of compression membrane, thus further dehydration.When the squeezing stage, constantly carry out, the outlet draining flow of filtrate channel reduces gradually, after a period of time, when the outlet no liquid of filtrate channel is discharged, closes compression source of the gas or high-pressure water switch, the balance of recovery pressurizing chamber and ambient atmosphere air pressure, the squeezing stage finishes thus.
Described squeezing substrate, filter medium and filter substrate along continuous straight runs are stacked successively.Its objective is, can make to treat slowly stable the entering in filter cake container cavity of screening material, because filter medium is perpendicular to ground, when treating that screening material flows in filter cake container cavity, first flow to bottom, and due to self gravitation, contained liquid can enter downstream by filter medium, through filtrate channel, discharge, continue to pass into and treat screening material, the solid height in filter cake container cavity can slowly increase, and filter process is also constantly carrying out simultaneously, and because the material on upper strata can push the material of lower floor, thereby make the better effects if of filtering.
Described feed liquid entrance is opened in the top of squeezing substrate; The outlet of described filtrate channel is opened in the bottom of filter substrate; High-pressure fluid entrance is opened in the middle part of squeezing substrate.So the outlet of design feed liquid entrance and filtrate channel offer position, its objective is in order to save the energy.To treat that screening material sends into feed liquid entrance, not borrow other power-assisted effects, only with self gravitation, can enter filter cake container cavity.What be arranged in filter cake container cavity treats screening material, and contained liquid can by filter medium, enter the filtrate channel in downstream by the gravity of self equally, through the outlet of the filtrate channel in lowest part, automatically outside discharge filter.Like this position of design high-pressure fluid entrance, its objective is the more even of the pressure distribution that can make in pressurizing chamber, the stability while increasing the work of this device.
Described squeezing substrate is towards a side of compression membrane with laminating cambered surface, and described crushing chamber is surrounded by this laminating cambered surface and filter medium.So the object of design is that compression membrane can better fit in laminating cambered surface, makes it not fragile.
For the pressure of Compressed Gas or highly pressurised liquid can be evenly distributed on each aspect of compression membrane more, described high-pressure fluid entrance runs through the centre of the cambered surface of fitting.
In order to realize the remote conveying of Compressed Gas or highly pressurised liquid, facilitate technological design and can carry out the parallel connection use of a plurality of devices, described high-pressure fluid entrance is connected to compressed gas source or high-pressure water by pipeline.
Described compression membrane is circular, to its objective is in order being evenly distributed on compression membrane better by the pressure in pressurizing chamber, and to make each fixing point at compression membrane edge, all bears identical distortion pulling force, makes its firm and durable more.
Periphery around described compression membrane is provided with pressure ring, this pressure ring is fixed by screws on squeezing substrate, its reason is because the distortion pulling force that compression membrane edge bears is very large, general fixing means is easily damaged under long-term use, by pressure ring and screw, fix, not only can guarantee fixing reliability, and dismounting after convenient, cleaning and replacing.
Described filter substrate is towards a side surface of filter medium with a plurality of salient points, and a plurality of salient points become positive triangle dot matrix to distribute, and are described filtrate channel between salient point.The effect of salient point is for supporting filter medium, guarantees that filter medium can be not recessed to filtrate channel because of pressurized, causes its gross distortion, affects service life.A plurality of salient points become triangle dot matrix to distribute, can dispersed pressure, thus avoid that compared with other salient points, to bear pressure excessive because of salient points individually, and puncture filter medium.
Described salient point is identical cylindrical of shape, and the spacing of adjacent salient point is 1.5 to 3 times of salient point diameters.Due to salient point be designed to cylindrical, thereby can so that salient point better with filter medium laminating, and because binding face is circle, there is not knuckle, can not cause serious damage to filter medium.The spacing of adjacent salient point so designs, its objective is in order to guarantee that the quantity of salient point is abundant when having enough filtrate channel areas, and the pressure of dispersed each salient point, and directly improved the withstand voltage degree of filter medium.
The position that described squeezing substrate and filter medium fit is provided with the sealing ring distributing around crushing chamber.Its purpose of design is, can improve the sealing of filter cake container cavity, while guaranteeing work, has enough safety and reliabilities.
Compared with prior art, the invention has the beneficial effects as follows, for small-sized, microscale experiment and production field, the present invention not only gained filter cake solid content is higher, and required filter material is still less, more convenient operation, and operating efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the side schematic view of the filter with compression membrane of the present invention;
Fig. 2 is the front schematic view of the filter with compression membrane of the present invention;
Fig. 3 is the partial schematic diagram of the filtrate channel of the filter with compression membrane of the present invention.
The specific embodiment
In conjunction with the accompanying drawings and embodiments the present invention is described in further detail:
With reference to Fig. 1, Fig. 2, the filter with compression membrane of the present invention, comprise stacked successively, and periphery the squeezing substrate 2, filter medium and the filter substrate 1 that are tightly connected, three fixes by bolt seal, has guaranteed that device inside can bear larger pressure.Due to the present embodiment, treating screening material is mud, thereby selects hydrophilic microporous filter membrane 3 as filter medium.On filter substrate 1, have the filtrate channel 4 being connected with the surface of hydrophilic microporous filter membrane 3, the outlet of filtrate channel 4 is positioned at the bottom of filter substrate 1, and during work, liquid enters filtrate channel 4 by hydrophilic microporous filter membrane 3, through the outlet of filtrate channel 4, discharges.
Squeezing substrate 2 with crushing chamber, is provided with flexible compression membrane 11 towards a side of hydrophilic microporous filter membrane 3 in crushing chamber, the present embodiment selects elastoplast thin slice as compression membrane 11.Crushing chamber is squeezed diaphragm 11 and is divided into two parts, and a part is the filter cake container cavity 12 adjacent with hydrophilic microporous filter membrane 3, and another part is the pressurizing chamber 10 isolated with hydrophilic microporous filter membrane 3.When normal work, filter cake container cavity 12 is mainly used to hold treats screening material, and treats the last filter cake forming of screening material.10 connection air pumps of pressurizing chamber, provide pressure, and the compression membrane 11 promoting in crushing chamber rebounds, thereby the screening material for the treatment of in filter cake container cavity 12 is squeezed.Filter cake container cavity 12 upper ends are communicated with feed liquid entrance 8.Squeezing substrate 2 towards a side of compression membrane 11 with laminating cambered surface 5, the centre that high-pressure fluid entrance 9 runs through the cambered surface 5 of fitting communicates with the external world, during work, high-pressure fluid entrance 9 joins by pipeline and air pump, wherein pressurizing chamber 10 is designed to cambered surface with the binding face of compression membrane 11, its main purpose be for can be better and compression membrane 11 fit.Compression membrane 11 in crushing chamber is circular, and periphery is provided with pressure ring 7, and pressure ring 7 is fixed by screws on squeezing substrate 2, not only makes compression membrane 11 more firm, and unpicks and washes replacing after convenient.
With reference to Fig. 3, filter substrate 1 is provided with towards hydrophilic microporous filter membrane 3 one sides the cylindrical salient point 6 that a plurality of shapes are identical, between adjacent salient point 6, distance and salient point 6 diameter ratio are 2:1, it act as and supports hydrophilic microporous filter membrane 3, prevent that hydrophilic microporous filter membrane 3 from, because of pressurized gross distortion, affecting its service life.
Squeezing substrate 2 is provided with the part that hydrophilic microporous filter membrane 3 fits the sealing ring 13 distributing around crushing chamber, can guarantee the reliability of sealing.
During work, mud is sent into from feed liquid entrance 8, enters in filter cake container cavity 12, due to the effect of hydrophilic microporous filter membrane 3, the moisture in mud enters filtrate channel 4 by hydrophilic microporous filter membrane 3, through the outlet of filtrate channel 4, discharges, sandy soil cannot pass through, and are trapped within filter cake container cavity 12.Continue slowly to pass into mud, now the outlet flow rate of liquid of filtrate channel 4 increases, and the mud liquid level in filter cake container cavity 12 raises gradually, treats to be full of mud in filter cake container cavity 12, now stops passing into mud, cuts off feed liquid entrance 8.Now, owing to there being a large amount of mud in filter cake container cavity 12, compression membrane 11 is pressed into pressurizing chamber 10 inside, is close to laminating cambered surface 5 completely.
Air pump delivery port is joined by pipeline and high-pressure fluid entrance 9, open air pump switch, gases at high pressure are pressed in pressurizing chamber 10, gas pressure intensity in pressurizing chamber 10 increases gradually, compression membrane 11 is pushed back by gases at high pressure, the mud that compression membrane 11 pushes in filter cake container cavities 12 simultaneously, the liquid in mud is squeezed out gradually, by hydrophilic microporous filter membrane 3, enters downstream.Until the outlet of filtrate channel 4, no longer during discharge opeing, close air pump switch, now whole expressing process finishes.Finally open flange, take out filter cake.
Claims (6)
1. the filter with compression membrane, comprise stacked successively, and squeezing substrate, filter medium and filter substrate that periphery is tightly connected, on described filter substrate, have the filtrate channel being connected with the surface of filter medium, it is characterized in that, described squeezing substrate with crushing chamber, is provided with flexible compression membrane towards a side of filter medium in crushing chamber; This compression membrane is divided into the filter cake container cavity adjacent with filter medium and the pressurizing chamber isolated with filter medium by crushing chamber; Described squeezing substrate also offers the high-pressure fluid entrance being communicated with described pressurizing chamber, and the feed liquid entrance being communicated with described filter cake container cavity;
Described squeezing substrate, filter medium and filter substrate along continuous straight runs are stacked successively;
Described feed liquid entrance is opened in the top of squeezing substrate; The outlet of described filtrate channel is opened in the bottom of filter substrate; High-pressure fluid entrance is opened in the middle part of squeezing substrate;
Described filter substrate is towards a side surface of filter medium with a plurality of salient points, and a plurality of salient points become positive triangle dot matrix to distribute, and are described filtrate channel between salient point;
Described salient point is identical cylindrical of shape, and the spacing of adjacent salient point is 1.5 to 3 times of salient point diameters.
2. the filter with compression membrane as claimed in claim 1, is characterized in that, described squeezing substrate is towards a side of compression membrane with laminating cambered surface, and described crushing chamber is surrounded by this laminating cambered surface and filter medium.
3. the filter with compression membrane as claimed in claim 2, is characterized in that, described high-pressure fluid entrance runs through the centre of the cambered surface of fitting.
4. the filter with compression membrane as claimed in claim 1, is characterized in that, described high-pressure fluid entrance is connected to compressed gas source or high-pressure water by pipeline.
5. the filter with compression membrane as claimed in claim 1, is characterized in that, described compression membrane is circular.
6. the filter with compression membrane as claimed in claim 1, is characterized in that, around the periphery of described compression membrane, is provided with pressure ring, and this pressure ring is fixed by screws on squeezing substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537738.2A CN102989217B (en) | 2012-12-11 | 2012-12-11 | Filter having squeeze diaphram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537738.2A CN102989217B (en) | 2012-12-11 | 2012-12-11 | Filter having squeeze diaphram |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102989217A CN102989217A (en) | 2013-03-27 |
| CN102989217B true CN102989217B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210537738.2A Expired - Fee Related CN102989217B (en) | 2012-12-11 | 2012-12-11 | Filter having squeeze diaphram |
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| CN (1) | CN102989217B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230723A (en) * | 2021-05-13 | 2021-08-10 | 河海大学 | Method for filter-pressing dehydration test of water-containing solid waste |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202342965U (en) * | 2011-10-28 | 2012-07-25 | 郑州华一高科工程有限公司 | Air cushion diaphragm type two-stage squeezing solid-liquid separation filter press |
| CN203002061U (en) * | 2012-12-11 | 2013-06-19 | 四川多维过滤设备有限公司 | Filter with pressing membrane |
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2012
- 2012-12-11 CN CN201210537738.2A patent/CN102989217B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202342965U (en) * | 2011-10-28 | 2012-07-25 | 郑州华一高科工程有限公司 | Air cushion diaphragm type two-stage squeezing solid-liquid separation filter press |
| CN203002061U (en) * | 2012-12-11 | 2013-06-19 | 四川多维过滤设备有限公司 | Filter with pressing membrane |
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| Publication number | Publication date |
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| CN102989217A (en) | 2013-03-27 |
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