CN210409808U - Sand film composite filtering device and filtering system - Google Patents

Abstract

The utility model discloses a compound filter equipment of sand membrane and filtration system relates to a filter equipment, and it includes casing, membrane filter core, sand filtering layer and drain pipe, is equipped with the stoste import on the casing, be equipped with the sand filtering layer in the casing, the membrane filter core buries in the sand filtering layer, and the membrane filter core is connected with the drain pipe, is equipped with the clear liquid export on the drain pipe, the beneficial effects of the utility model are that: the characteristics of strong dirt-containing capacity of the sand filter layer are utilized to pre-filter a large number of thicker particles, so that the flow loss of a more precise membrane filter core due to the blockage of large particles is avoided, the defect of insufficient precision of the sand filter layer is overcome by the membrane filter core, the remaining small number of fine insoluble substances are intercepted and filtered, and when the membrane filter core is cooperated with an aeration pipe and a backflushing port, a good backflushing effect can be realized, and the recovery of the flux of the membrane filter core is effectively ensured.

Description

Sand film composite filtering device and filtering system

Technical Field

The utility model relates to a filter equipment specifically is a compound filter equipment of sand membrane and filtration system.

Background

The filtering membrane is a microporous filtering membrane with the pore size of consistent specification and the rated pore size range of less than 0.01 micron. Solute molecules smaller than the pore size can be screened out by applying a suitable pressure to one side of the membrane.

The industrial application of the filter membrane is very wide, and the filter membrane becomes one of novel chemical unit operations. For use in the separation, concentration, purification of biologics, pharmaceuticals and food industries; also used for terminal treatment devices in blood treatment, wastewater treatment and ultrapure water preparation.

However, in practical applications, impurities with large particles exist in the sewage or the stock solution, and when the impurities are attached to the surface of the filtering membrane, the flow is lost, so that the filtering efficiency is reduced.

Based on this, this application has proposed a sand membrane composite filter equipment and filtration system.

Disclosure of Invention

An object of the utility model is to provide a sand membrane composite filter and filtration system to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a sand membrane composite filter device, includes casing, membrane filter core, sand filtration layer and drain pipe, is equipped with the stoste import on the casing, be equipped with the sand filtration layer in the casing, the membrane filter core buries in the sand filtration layer, and the membrane filter core is connected with the drain pipe, is equipped with the clear liquid export on the drain pipe.

As a further aspect of the present invention: the liquid outlet pipe is also provided with a backflushing port, and the shell is provided with an overflow drain outlet.

As a further aspect of the present invention: still be equipped with the aeration pipe in the casing, the aeration pipe is connected with compressed air pipe.

As a further aspect of the present invention: and valves are arranged on the compressed air pipe, the clear liquid outlet, the backflushing port, the stock solution inlet and the overflow drain outlet.

A filtration system comprising a sand membrane composite filtration device as described above.

Compared with the prior art, the beneficial effects of the utility model are that: the characteristics of strong dirt-containing capacity of the sand filter layer are utilized to pre-filter a large number of thicker particles, so that the flow loss of a more precise membrane filter core due to the blockage of large particles is avoided, the defect of insufficient precision of the sand filter layer is overcome by the membrane filter core, the remaining small number of fine insoluble substances are intercepted and filtered, and when the membrane filter core is cooperated with an aeration pipe and a backflushing port, a good backflushing effect can be realized, and the recovery of the flux of the membrane filter core is effectively ensured.

Drawings

Fig. 1 is a schematic structural diagram of a sand-membrane composite filtering device.

In the figure: 1-shell, 2-compressed air pipe, 3-membrane filter element, 4-aeration pipe, 5-sand filter layer, 6-liquid outlet pipe, 7-clear liquid outlet, 8-back flushing port, 9-stock solution inlet and 10-overflow drain outlet.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Example 1

Referring to fig. 1, in an embodiment of the present invention, a sand-membrane composite filter device includes a housing 1, a membrane filter element 3, a sand filter layer 5 and a liquid outlet pipe 6, wherein a raw liquid inlet 9 is disposed on the housing 1, the casing 1 is internally provided with a sand filtering layer 5, as can be seen from the figure, the sand filtering layer 5 is actually a layer of filtering sand (quartz) laid at the bottom of the casing 1, the membrane filter element 3 is embedded in the sand filtering layer 5, the membrane filter element 3 is connected with a liquid outlet pipe 6, the liquid outlet pipe 6 is provided with a clear liquid outlet 7, in practical application, the clear liquid outlet 7 is connected with negative pressure for vacuum filtration, the stock solution entering the shell 1 from the stock solution inlet 9 is firstly filtered by the sand filter 5, so as to remove large-particle impurities in the raw liquor, then the raw liquor is pumped out from a clear liquid outlet 7 after being subjected to the precise filtration of the membrane filter element 3, and because large granule impurity is filtered by sand filter 5 in advance, can effectively avoid membrane filter element 3 because receive the influence of large granule impurity and lose the problem of flow.

Further, still be equipped with back flush mouth 8 on the drain pipe 6 for back flush to membrane filter core 3, it is corresponding, be equipped with overflow drain 10 on the casing 1, when the back flush, the sparge water outwards discharges from membrane filter core 3, will adhere to the impurity on membrane filter core 3 surface and wash, and the sparge water can also drive the movement of the filter sand in the sand filtration layer 5 simultaneously for the filter sand of motion can with the surperficial contact friction of membrane filter core 3, in order to realize efficient impurity clearance.

Further, in order to improve the flushing effect, an aeration pipe 4 is further arranged in the shell 1, certainly, the aeration pipe is positioned below the membrane filter element 3, the aeration pipe 4 is connected with the compressed air pipe 2, during back flushing, the filter sand and the liquid in the shell 1 are fully stirred by the compressed air and flow, the high-speed flow of the filter sand can rapidly wipe off the pollutant and impurities on the surface of the membrane filter element 3, and the flux of the membrane filter element 3 is recovered by matching with the back flushing process; after the sand is fully stirred, the filtered sand is rapidly precipitated due to high density, and other insoluble substances, dust, impurities and the like in the sand filtering layer 5 can be cleaned to the upper liquid level and discharged out of the shell 1 through the overflow sewage discharge outlet 10, so that the cleaning process of the sand filtering layer is completed.

Of course, in order to simplify the technical solution, the valves installed on the compressed air pipe 2, the clear liquid outlet 7, the backflush port 8, the raw liquid inlet 9 and the overflow drain outlet 10 are not specifically described in detail in the embodiment, but those skilled in the art are fully aware of the need to arrange the valves on the above components in practical application in combination with the drawings and practical application.

Example 2

The embodiment of the utility model provides an in, a filtration system, it includes as above embodiment the compound filter equipment of sand membrane, it is stable consequently also has 3 fluxes of membrane filter core, is difficult for receiving the advantage that large granule impurity influences.

It should be particularly noted that, in the technical scheme, by utilizing the characteristic of strong dirt-containing capacity of the sand filter layer 5, a large amount of coarse particles are pre-filtered, so that the flow loss of the precise membrane filter element 3 due to the blockage of large particles is avoided, the defect of insufficient precision of the sand filter layer 5 is overcome by the membrane filter element 3, the remaining small amount of fine insoluble substances are intercepted and filtered, and when the residual fine insoluble substances are cooperated with the aeration pipe 4 and the back flushing port 8, a good back flushing effect can be realized, and the flux recovery of the membrane filter element 3 is effectively ensured.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (5)

1. The utility model provides a sand membrane composite filter device, includes casing (1), membrane filter core (3), sand filter layer (5) and drain pipe (6), its characterized in that is equipped with stoste inlet (9) on casing (1), be equipped with sand filter layer (5) in casing (1), membrane filter core (3) bury in sand filter layer (5), and membrane filter core (3) are connected with drain pipe (6), are equipped with clear liquid export (7) on drain pipe (6).

2. The sand-film composite filtering device as claimed in claim 1, wherein the liquid outlet pipe (6) is further provided with a backflushing port (8), and the shell (1) is provided with an overflow sewage draining outlet (10).

3. The sand-film composite filter device according to claim 2, wherein an aeration pipe (4) is further arranged in the shell (1), and the aeration pipe (4) is connected with the compressed air pipe (2).

4. The sand-film composite filtering device as claimed in claim 3, wherein valves are arranged on the compressed air pipe (2), the clear liquid outlet (7), the backflushing port (8), the stock solution inlet (9) and the overflow drain outlet (10).

5. A filtration system comprising the sand membrane composite filtration device according to any one of claims 1 to 4.

Images