CN215692389U - Filter device - Google Patents
Filter device Download PDFInfo
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- CN215692389U CN215692389U CN202120767636.4U CN202120767636U CN215692389U CN 215692389 U CN215692389 U CN 215692389U CN 202120767636 U CN202120767636 U CN 202120767636U CN 215692389 U CN215692389 U CN 215692389U
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- tank
- filter
- filter aid
- waste liquid
- aid
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Abstract
The utility model belongs to the technical field of filtration, and relates to a filtering device which comprises a waste liquid tank, a filter aid tank and a filtering tank, wherein the filter aid tank is filled with the filter aid, the filtering tank is used for performing dead-end filtration when the filter aid tank is communicated with the filtering tank, a filter aid layer is formed on a filter membrane, and the filtering tank is used for performing cross-flow filtration when the waste liquid tank is communicated with the filtering tank.
Description
Technical Field
The utility model belongs to the technical field of filtration, and particularly relates to a filtering device.
Background
Dead-end filtration: the traditional plate-frame filtration, diatomite filtration and filter element filtration are that raw water is placed at the upstream of a membrane, under the push of pressure difference, water and particles smaller than the membrane pores permeate the membrane, and particles larger than the membrane pores are intercepted by the membrane. The pressure difference can be created either by applying pressure on the water side or by applying a vacuum on the filtrate side. With the extension of the filtration time of the dead-end filtration, the trapped particles form a pollution layer on the surface of the membrane, so that the filtration resistance is increased, and the filtration transmittance of the membrane is reduced under the condition of unchanged operating pressure.
Cross-flow filtration: the water flow generates two component forces on the surface of the membrane, one is a normal force vertical to the membrane surface to enable water molecules to penetrate through the membrane surface, and the other is a tangential force parallel to the membrane surface to flush out the intercepted matters on the membrane surface. When the cross-flow filtration transmittance is reduced, the membrane can be effectively cleaned by only trying to reduce the normal force of the membrane surface and improve the tangential force of the membrane surface, so that the original performance of the membrane is recovered. Therefore, the surface of the filter membrane for cross-flow filtration is not easy to generate concentration polarization phenomenon and scaling problem, and the filtration transmittance is attenuated slowly.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the background art, the utility model provides a filtering device which has the advantages of protecting a filter membrane and being suitable for high-viscosity filter membrane waste liquid which is easy to damage.
The utility model is realized by the following technical scheme:
a filter device comprises a waste liquid tank, a filter aid tank and a filter tank, wherein the filter aid tank is filled with a filter aid, the filter tank is used for carrying out dead-end filtration when the filter aid tank is communicated with the filter tank, and the filter tank is used for carrying out cross-flow filtration when the waste liquid tank is communicated with the filter tank.
As a further explanation of the utility model: the filter tank is provided with a cross-flow filtration adjusting port, and the cross-flow adjusting port is used for adjusting the shearing force of the fluid in the filter tank on the filter membrane.
As a further explanation of the utility model: the waste liquid tank and the filter aid tank are communicated with the filter tank, and isolating valves are arranged between the waste liquid tank and the filter aid tank and the filter tank.
As a further explanation of the utility model: and a pressure pump is arranged between the waste liquid tank and the filter aid tank and the filter tank.
As a further explanation of the utility model: the filter aid is one or more of diatomite, perlite, cellulose, asbestos, graphite powder, sawdust, magnesium oxide, gypsum, active carbon and acid clay.
As a further explanation of the utility model: and a filter aid recovery port is arranged on the filter tank.
Compared with the prior art, the utility model has the following beneficial technical effects:
1. the device during operation, at first communicate filter aid jar and filter tank, carry out the dead end through filtering the jar and filter the filter aid, make in the filter aid help the filter particle in filter membrane surface formation help the filter bed, then cut off help filter tank and filter tank, and communicate waste liquid jar and filter tank, help filter bed and filter membrane to filter the waste liquid through filtering in the jar, because the filter membrane surface has formed the one deck and has helped the filter bed, consequently, impurity can not the direct contact filter membrane in the waste liquid, form the protection to the filter membrane, be applicable to the waste liquid of high viscosity and fragile filter membrane.
2. The filter aid recovery port is used for recovering the filter aid in the process of dead-end filtration, and the cross-flow filtration regulating port is used for changing the flow direction of fluid in the filter tank so that the fluid in the filter tank generates shearing force on the surface of the filter membrane.
Drawings
Fig. 1 is a schematic view showing the connection of the components of the present invention.
Description of the reference numerals
1. A waste liquid tank; 2. a filter aid tank; 3. a filter tank; 31. a cross-flow regulation port; 32. a filter aid recovery port; 4. a block valve; 5. a booster pump.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be given below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, the filtering device comprises a waste liquid tank 1, a filter aid tank 2 and a filtering tank 3, wherein the filter aid tank 2 is filled with the filter aid, the filtering tank 3 is used for dead-end filtration when the filter aid tank 2 is communicated with the filtering tank 3, a filter aid layer is formed on the filter membrane, and the filtering tank 3 is used for cross-flow filtration when the waste liquid tank 1 is communicated with the filtering tank 3. The filtration tank 3 is provided with a filtration aid recovery port 32. Specifically, the waste liquid tank 1 is filled with waste liquid, the filter aid tank 2 is filled with filter aid, when the device works, dead-end filtration is carried out on the filter aid, filter aid particles in the filter aid are filtered to a filter screen of the filter tank 3 to form a filter aid layer, and meanwhile, redundant filter aid is recycled to the filter aid tank 2 through the filter aid recycling opening 32; then the cross flow filtration is carried out, so that the waste liquid can not directly contact with the filter screen, but contact with the filter-aid layer at first, and the method is particularly suitable for the waste liquid which has high viscosity and is easy to pollute the filter membrane.
The filter tank 3 is provided with a cross-flow filtration adjusting port, and the cross-flow adjusting port 31 is used for adjusting the shearing force of the fluid in the filter tank 3 on the filter membrane. Specifically, because the liquid in the filter tank 3 flows perpendicular to the filter membrane during dead-end filtration, the shearing force does not exist on the surface of the filter membrane for the fluid in the filter tank 3, when the fluid in the filter tank 3 flows out of the filter tank 3 through the cross flow adjusting port 31, the fluid in the filter tank 3 generates the shearing force on the surface of the filter membrane, the liquid flowing out through the cross flow adjusting port 31 can be recycled to the waste liquid tank 1 to treat all the waste liquid, and can also be discharged into a sewage treatment center, and the waste liquid flowing out through the adjusting port only accounts for 1/10 of the total amount of the whole waste liquid.
The filter aid is one or more of diatomite, perlite, cellulose, asbestos, graphite powder, sawdust, magnesium oxide, gypsum, active carbon and acid clay. Specifically, the filter aid forms a filter aid layer on the filter membrane to protect the filter membrane when passing through the filter membrane.
The waste liquid tank 1 and the filter aid tank 2 are both communicated with the filter tank 3, and isolating valves 4 are arranged between the waste liquid tank 1 and the filter aid tank 2 and the filter tank 3. A pressure pump 5 is arranged between the waste liquid tank 1 and the filter aid tank 2 and the filter tank 3. Specifically, the isolating valve 4 is used for controlling the connection and disconnection of the waste liquid tank 1, the filter aid tank 2 and the filter tank 3, and the pressure pump 5 is used for increasing pressure for filtering the filter tank 3 and pumping waste liquid or filter aid.
The working principle of the utility model is as follows:
when the device works, the filter aid is subjected to dead-end filtration, filter aid particles in the filter aid are filtered to a filter screen of the filter tank 3 to form a filter aid layer, and meanwhile, redundant filter aid is recovered to the filter aid tank 2 through the filter aid recovery port 32; then the cross-flow filtration adjusting port is opened to carry out cross-flow filtration on the liquid in the filtration tank 3, the filter-aid layer ensures that the waste liquid can not directly contact with the filter screen, but firstly contacts with the filter-aid layer to protect the filter screen, and the waste liquid discharged from the filtration tank 3 through the cross-flow filtration adjusting port is recycled into the waste liquid tank 1 for circular filtration.
The embodiments given above are preferable examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the utility model by a person skilled in the art belong to the protection scope of the utility model.
Claims (6)
1. A filter device, characterized by: the filter aid is characterized by comprising a waste liquid tank (1), a filter aid tank (2) and a filter tank (3), wherein the filter aid tank (2) is filled with a filter aid, the filter tank (3) is subjected to dead-end filtration when the filter aid tank (2) is communicated with the filter tank (3), a filter aid layer is formed on a filter membrane, and the filter tank (3) is subjected to cross flow filtration when the waste liquid tank (1) is communicated with the filter tank (3).
2. The filtration device of claim 1, wherein: the cross-flow adjusting port (31) is arranged on the filtering tank (3), and the cross-flow adjusting port (31) is used for adjusting the shearing force of the fluid in the filtering tank (3) on the filter membrane.
3. The filtration device of claim 1, wherein: the waste liquid tank (1) and the filter aid tank (2) are communicated with the filter tank (3), and isolating valves (4) are arranged between the waste liquid tank (1) and the filter aid tank (2) and the filter tank (3).
4. The filtration device of claim 1, wherein: and a pressure pump (5) is arranged between the waste liquid tank (1) and the filter aid tank (2) and the filter tank (3).
5. The filtration device of claim 1, wherein: the filter aid is one or more of diatomite, perlite, cellulose, asbestos, graphite powder, sawdust, magnesium oxide, gypsum, active carbon and acid clay.
6. The filtration device of claim 1, wherein: the filter tank (3) is provided with a filter aid recovery port (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120767636.4U CN215692389U (en) | 2021-04-14 | 2021-04-14 | Filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120767636.4U CN215692389U (en) | 2021-04-14 | 2021-04-14 | Filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215692389U true CN215692389U (en) | 2022-02-01 |
Family
ID=80029065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120767636.4U Active CN215692389U (en) | 2021-04-14 | 2021-04-14 | Filter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215692389U (en) |
-
2021
- 2021-04-14 CN CN202120767636.4U patent/CN215692389U/en active Active
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