CN203002061U - Filter with pressing membrane - Google Patents
Filter with pressing membrane Download PDFInfo
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- CN203002061U CN203002061U CN 201220680077 CN201220680077U CN203002061U CN 203002061 U CN203002061 U CN 203002061U CN 201220680077 CN201220680077 CN 201220680077 CN 201220680077 U CN201220680077 U CN 201220680077U CN 203002061 U CN203002061 U CN 203002061U
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- filter
- squeezing
- substrate
- filtering
- band
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- Filtration Of Liquid (AREA)
Abstract
The utility model discloses a filter with a pressing membrane. The filter comprises a pressing base plate, a filtering medium and a filtering base plate, which are sequentially overlapped, wherein the peripheries of the pressing base plate, the filtering medium and the filtering base plate are in sealed connection; the filtering base plate is provided with a filtering channel communicated with the surface of the filtering medium; one side of the pressing base plate, which faces the filtering medium, is provided with a pressing cavity; the pressing cavity is internally provided with the elastic pressing membrane; the pressing membrane is used for dividing the pressing cavity into a filtering cake containing cavity which is adjacent to the filtering medium, and a pressurizing cavity which is separated from the filtering medium; and the pressing base plate is further provided with a high-pressure fluid inlet communicated with the pressurizing cavity, and a material liquid inlet communicated with the filtering cake containing cavity. The filter disclosed by the utility model has the beneficial effects that aiming at the fields of small-sized and miniature experiments and production, not only can the solid content of a filtering cake be higher, but also needed filtering materials are fewer; and therefore, the operation is more convenient and the working efficiency is higher.
Description
Technical field
The utility model relates to a kind of filter plant, especially relates to a kind of filter with the squeezing diaphragm.
Background technology
Filter plant is mainly to carry 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 purpose is often in order to obtain the solid in solidliquid mixture, wherein involved principle is: the solidliquid mixture filter medium of flowing through, due to the aperture of solid particle volume greater than filter medium, can't pass through filter medium, thereby rest on the filter medium surface, and pile up gradually to form and filter filter cake, formed filter cake has also played further filtration simultaneously; Liquid by filter medium, thereby is realized Separation of Solid and Liquid due to the aperture of molecular volume less than filter medium.
For large-scale production operation, selecting of filter plant, mainly take large-scale filter press as main.Have that equipment volume is large, treatment effect good, receive the characteristics such as the material ability is strong by large-scale filter press, 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, the laboratory material analyzing, the situations such as valuable ingredient of traditional Chinese medicine purification, the large-scale filter press purpose that often can not fulfil assignment, common way is that large-scale filter press is dwindled according to equal proportion, and it can be used 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 can't 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, can't be widely used.
The utility model content
The utility model provides a kind of filter with the squeezing diaphragm, has the characteristics such as required filter material is few, gained filter cake solid content is high, simple to operation, is specially adapted to need small-sized, microscale experiment and production.
The filter of band squeezing diaphragm of the present utility model, comprise stacked successively, and squeezing substrate, filter medium and filter substrate that periphery is tightly connected, have the filtrate channel that is connected with the surface of filter medium on described filter substrate, 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 with crushing chamber; Described squeezing substrate also offers the high-pressure fluid entrance that is communicated with described pressurizing chamber, and the feed liquid entrance that is communicated with described filter cake container cavity.
When normal the use, treat that the screening material enters in the filter cake container cavity from the feed liquid entrance, filter medium this moment (as filter cloth etc.) touches and treats the screening material, because filter medium has by little molecule, hold back macromolecular characteristic, treat in the filter cake container cavity that the liquid component in the screening material passes through filter medium thereby make, enter into the filtrate channel in downstream, discharge through the outlet of filtrate channel, solid particle can't pass through filter medium, is blocked in the filter cake container cavity again.The process for the treatment of is constantly carried out, and the muddy solid particle in the filter cake container cavity increases gradually, and compression membrane is extruded distortion, fits in gradually the applying cambered surface.When slimy solid is full of the filter cake container cavity, stop treating sending into of screening material, cut off the feed liquid entrance, make and be in the semitight state in the filter cake container cavity at this moment, so-called semitight state refers to can be by filter medium except liquid, and other materials all can't be by other any part turnover filter cake container cavities in the filter cake container cavity.
Enter the squeezing stage this moment.Start compressed gas source or high-pressure water, Compressed Gas or highly pressurised liquid enter pressurizing chamber through the high-pressure fluid entrance.Along with the pressure in pressurizing chamber raises gradually, this moment is because the compression membrane that the solid particle extruding that is subject in the filter cake container cavity is recessed in pressurizing chamber is rebounded gradually.Muddy solid in the filter cake container cavity is because be subject to the extruding of compression membrane, thus further dehydration.Constantly carry out when the squeezing stage, 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 and treat slowly stable the entering in the filter cake container cavity of screening material, due to filter medium perpendicular to ground, when treating that the screening material flows in the filter cake container cavity, at first flow to the bottom, and due to self gravitation, contained liquid can enter the downstream by filter medium, discharge through filtrate channel, continue to pass into and treat the screening material, the solid height in the filter cake container cavity can slowly increase, and filter process is also constantly carrying out simultaneously, and can push the material of lower floor due to the material on upper strata, thereby make the better effects if of filtration.
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; The 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 the position, its objective is in order to save the energy.To treat that the screening material sends into the feed liquid entrance, not borrow other power-assisted effects, only with self gravitation, can enter the filter cake container cavity.What be arranged in the filter cake container cavity treats the screening material, and contained liquid can by filter medium, enter the filtrate channel in downstream by the gravity of self equally, and the outlet of the filtrate channel through being in lowest part is automatically outside discharge filter.So the position of design high-pressure fluid entrance, its objective is to make the more even of the interior pressure distribution of pressurizing chamber, the stability when increasing the work of this device.
With the applying cambered surface, described crushing chamber is surrounded by this applying cambered surface and filter medium described squeezing substrate towards a side of compression membrane.So the purpose of design is that compression membrane can better fit in the applying cambered surface, makes it not fragile.
Can more be evenly distributed in for the pressure that makes Compressed Gas or highly pressurised liquid on each aspect of compression membrane, described high-pressure fluid entrance runs through the centre of applying cambered surface.
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 can be evenly distributed on compression membrane better with 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 the squeezing substrate, its reason is because the distortion pulling force that the compression membrane edge bears is very large, general fixing means is easily damaged under long-term the use, fix by pressure ring and screw, not only can guarantee the reliability of fixing, and dismounting after convenient, clean and change.
With a plurality of salient points, a plurality of salient points become positive triangle dot matrix to distribute to described filter substrate, are described filtrate channel between salient point towards a side surface of filter medium.The effect of salient point is to support 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 the triangle dot matrix to distribute, can Uniform Dispersion pressure, thus avoid that to bear pressure than other salient points 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 and because binding face is circle, not have knuckle so that salient point is better fitted with filter medium, 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 each salient point of Uniform Dispersion, 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 that distributes around crushing chamber.Its purpose of design is, can improve the sealing of filter cake container cavity, when guaranteeing work, has enough safety and reliabilities.
Compared with prior art, the beneficial effects of the utility model are, for small-sized, microscale experiment and production field, the utility model not only gained filter cake solid content is higher, and required filter material is still less, more convenient operation, and operating efficiency is higher.
Description of drawings
Fig. 1 is the side schematic view of the filter of band squeezing diaphragm of the present utility model;
Fig. 2 is the front schematic view of the filter of band squeezing diaphragm of the present utility model;
Fig. 3 is the partial schematic diagram of filtrate channel of the filter of band of the present utility model squeezing diaphragm.
The specific embodiment
In conjunction with the accompanying drawings and embodiments the utility model is done further detailed description:
With reference to Fig. 1, Fig. 2, the filter of band of the present utility model squeezing diaphragm, comprise stacked successively, and periphery the squeezing substrate 2, filter medium and the filter substrate 1 that are tightly connected, the three fixes by bolt seal, has guaranteed that device inside can bear larger pressure.Treating the screening material due to the present embodiment is mud, thereby selects hydrophilic microporous filter membrane 3 as filter medium.Have the filtrate channel 4 that is connected with the surface of hydrophilic microporous filter membrane 3 on filter substrate 1, 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, discharges through the outlet of filtrate channel 4.
With reference to Fig. 3, filter substrate 1 is provided with the identical cylindrical salient point 6 of a plurality of shapes towards hydrophilic microporous filter membrane 3 one sides, between adjacent salient point 6, distance is 2:1 with salient point 6 diameter ratio, it act as and supports hydrophilic microporous filter membrane 3, prevent that hydrophilic microporous filter membrane 3 from because of the pressurized gross distortion, affecting its service life.
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, discharges through the outlet of filtrate channel 4, sandy soil can't pass through, and are trapped within filter cake container cavity 12.Continue slowly to pass into mud, this moment, the outlet flow rate of liquid of filtrate channel 4 increased, 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, stops passing into mud this moment, cuts off feed liquid entrance 8.This moment is 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 applying cambered surface 5 fully.
The air pump delivery port is joined by pipeline and high-pressure fluid entrance 9, open the 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, compression membrane 11 pushes the interior mud of filter cake container cavities 12 simultaneously, and the liquid in mud is squeezed out gradually, enters the downstream by hydrophilic microporous filter membrane 3.No longer during discharge opeing, close the air pump switch until the outlet of filtrate channel 4, this moment, whole expressing process finished.Open at last flange, take out filter cake and get final product.
Claims (10)
- One kind with the squeezing diaphragm filter, comprise stacked successively, and squeezing substrate, filter medium and filter substrate that periphery is tightly connected, have the filtrate channel that is connected with the surface of filter medium on described filter substrate, 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 with crushing chamber; Described squeezing substrate also offers the high-pressure fluid entrance that is communicated with described pressurizing chamber, and the feed liquid entrance that is communicated with described filter cake container cavity.
- 2. the filter of band squeezing diaphragm as claimed in claim 1, is characterized in that, described squeezing substrate, filter medium and filter substrate along continuous straight runs are stacked successively.
- 3. the filter of band squeezing diaphragm as claimed in claim 2, is characterized in that, 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; The high-pressure fluid entrance is opened in the middle part of squeezing substrate.
- 4. the filter of band as claimed in claim 3 squeezing diaphragm, is characterized in that, with the applying cambered surface, described crushing chamber is surrounded by this applying cambered surface and filter medium described squeezing substrate towards a side of compression membrane.
- 5. the filter of band squeezing diaphragm as claimed in claim 4, is characterized in that, described high-pressure fluid entrance runs through the centre of applying cambered surface.
- 6. the filter of band squeezing diaphragm 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.
- 7. the filter of band squeezing diaphragm as claimed in claim 1, is characterized in that, described compression membrane is circular.
- 8. the filter of band as claimed in claim 1 squeezing diaphragm, is characterized in that, is provided with pressure ring around the periphery of described compression membrane, and this pressure ring is fixed by screws on the squeezing substrate.
- 9. the filter of band as claimed in claim 1 squeezing diaphragm, is characterized in that, with a plurality of salient points, a plurality of salient points become positive triangle dot matrix to distribute to described filter substrate, are described filtrate channel between salient point towards a side surface of filter medium.
- 10. the filter of band as claimed in claim 9 squeezing diaphragm, is characterized in that, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680077 CN203002061U (en) | 2012-12-11 | 2012-12-11 | Filter with pressing membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680077 CN203002061U (en) | 2012-12-11 | 2012-12-11 | Filter with pressing membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203002061U true CN203002061U (en) | 2013-06-19 |
Family
ID=48593699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220680077 Expired - Fee Related CN203002061U (en) | 2012-12-11 | 2012-12-11 | Filter with pressing membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203002061U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989217A (en) * | 2012-12-11 | 2013-03-27 | 浙江大学 | Filter having squeeze diaphram |
-
2012
- 2012-12-11 CN CN 201220680077 patent/CN203002061U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989217A (en) * | 2012-12-11 | 2013-03-27 | 浙江大学 | Filter having squeeze diaphram |
| CN102989217B (en) * | 2012-12-11 | 2014-12-03 | 浙江大学 | Filter having squeeze diaphram |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20141211 |
|
| EXPY | Termination of patent right or utility model |