CN211198824U

CN211198824U - Walnut shell filter with filter material cleaned circularly

Info

Publication number: CN211198824U
Application number: CN201922312406.4U
Authority: CN
Inventors: 王轲; 李长俊
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-07
Anticipated expiration: 2029-12-20

Abstract

The utility model relates to a walnut shell filter for circularly cleaning filter materials, which comprises a filter, an ultrasonic generator, a cylindrical filter screen, a buffer column, a back flush sewage outlet, a circulating pump, a stirring motor, a sewage inlet, a filter tank, a stirring rod, a filter material layer, a back flush water inlet, a filter bed, a sewage discharge outlet, a knife gate valve and a flushing ball valve; through set up puddler and corresponding pipeline in the filter tank, set up extrinsic cycle's supersonic generator and correspond the filter outside the filter tank to use the circulating pump to provide power, make the filter material that has adsorbed more oily impurity obtain effectual dispersion and desorption. The utility model discloses a through above design, improved filter material and adsorbed impurity's separation effect greatly, made the separation degree effectively promote to the effect of oily waste water is handled to the walnut shell filter has been guaranteed.

Description

Walnut shell filter with filter material cleaned circularly

Technical Field

The utility model relates to an environmental protection treatment facility field, especially a walnut shell filter of filter material is washd in circulation.

Background

The walnut shell is an oil-resistant material, has the characteristics of large specific surface area, strong adsorption force, low cost and easiness in obtaining, is commonly used for treating oily wastewater, can effectively remove oil and suspended matters in water, and has wide application in petroleum-related industries. The walnut shell filter matched with the device is a device which specially uses walnut shells as filter materials to filter oily wastewater. When the equipment is used for filtering, sewage flows through the filter material from top to bottom, and is purified in a self-adsorption mode, stirring is not used, and the walnut shells are easily crushed into small fragments due to rapid stirring, so that the filter screen is blocked, and the filtering effect is reduced. After the device is used for a long time, clean water is injected into the washing filter material from bottom to top, and backwashing regeneration can be carried out on the filter material, so that the aim of long-term cyclic sewage treatment is fulfilled. However, the walnut shell has the characteristic of large specific surface area, which means that the filter material has strong adsorption capacity, in addition, the treated pollutants are mostly oily pollutants, and the filter material has strong hydrophobicity, and the filter material used for a long time often shows the state that caking and the like are difficult to clean, and the effect of completely backwashing oily substances by means of water flow impact force under the stirring-free condition to make the oily substances desorbed from the walnut shell is very limited, and a device capable of effectively backwashing the filter material is needed to be used for regeneration of the walnut shell.

Ultrasonic waves, which are a high-energy beam of acoustic energy, are widely used for cleaning various objects. When propagating in the washing liquid, the ultrasonic wave can arouse cavitation, produces a large amount of micro-bubbles and constantly bursts and disintegrate to produce high temperature high pressure shock wave at local, when shock wave and cleaning object contact, the attached impurity that local high temperature high pressure condition can make on the cleaning object effectively drops, to oil adsorption of impurities, for simple water washing, ultrasonic cleaning has fine clean effect undoubtedly.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the walnut shell filter for circularly cleaning the filter material is provided.

A walnut shell filter for circularly cleaning filter materials comprises a filter, an ultrasonic generator, a cylindrical filter screen, a buffer column, a back flush drain outlet, a circulating pump, a stirring motor, a sewage inlet, a filter tank, a stirring rod, a filter material layer, a back flush water inlet, a filter bed, a sewage discharge outlet, a knife gate valve and a flushing ball valve, wherein the top of the filter tank is provided with the sewage inlet which is connected with an external sewage pipeline, the back flush water inlet is arranged below the side of the filter tank body, the filter bed is arranged inside the filter tank, the filter material layer is arranged on the filter bed, the sewage discharge outlet is arranged at the bottom of the filter tank, the top of the filter tank is also provided with the stirring motor which is connected with the stirring rod, the stirring rod extends into the filter tank from the top of the filter tank, the circulating pump is arranged beside the filter tank and is connected with the filter tank through a pipeline, the filter is arranged outside the filter tank and is respectively, the ultrasonic generator is abutted against the outer wall of the filter in a parallel plate mode, the cylindrical filter screen is overlapped with the central axis of the filter and is vertically arranged on a base inside the filter, and the back flushing sewage discharge outlet is arranged at the bottom of the filter and is communicated with the inner base and an external pipeline.

Preferably, the stirring rod is divided into a rod body and a stirring part, the rod body is positioned on the central axis in the vertical direction of the filter tank, and the stirring part is shaped like a Chinese character 'tian' and is completely buried in the filter material layer.

Preferably, the filter is provided with a knife gate valve on the pipeline connected with the circulating pump and the top of the filter tank respectively.

Preferably, the inner wall of the filter is also provided with a buffer column, and the buffer column is inclined to point to the direction of the backwashing sewage outlet.

Preferably, a flushing ball valve connected with an external clean water pipeline is further arranged on the upper surface of the pipeline section between the knife gate valve on the connecting pipeline of the filter tank and the circulating pump.

The utility model has the advantages that:

1. an external circulation type ultrasonic auxiliary backwashing system is introduced into the device, the filter material is sent into an external filter for ultrasonic desorption cleaning, and then is sent back into the filter tank for the circulation of the process, so that the regeneration effect of the filter material in backwashing can be greatly improved.

2. The stirring rod shaped like a Chinese character 'tian' is introduced into the tank body, so that the filtering material is stirred at a low rotating speed, the filtering material and backwashing water are mixed more fully when the filtering material is backwashed in an external circulation mode, the ultrasonic desorption effect of the filtering material entering the filter is improved, and the degree of separation of the filtering material and oil dirt on the filtering net in the filter is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure, 1 a filter, 2 an ultrasonic generator, 3 a cylindrical filter screen, 4 a buffer column, 5 a back flushing sewage discharge outlet, 6 a circulating pump, 7 a stirring motor, 8 a sewage inlet, 9 a filter tank, 10 a stirring rod, 11 a filter material layer, 12 a back flushing water inlet, 13 a filter bed, 14 a sewage discharge outlet, 15 a knife gate valve and 16 a flushing ball valve.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.

Example (b):

referring to fig. 1, a sewage inlet is arranged at the top of a filter tank 9, a sewage inlet 8 is connected with an external sewage pipeline, a back flush water inlet 12 is arranged below the side of the filter tank 9, a filter bed 13 is arranged inside the filter tank 9, a filter material layer 11 is arranged on the filter bed 13, a sewage discharge port 14 is arranged at the bottom of the filter tank 9, a stirring motor 7 is further arranged at the top of the filter tank 9, the stirring motor 7 is connected with a stirring rod 10, the stirring rod 10 extends into the filter tank 9 from the top of the filter tank 9, the stirring rod 10 is divided into a rod body and a stirring part, the rod body is positioned on a central axis in the vertical direction of the filter tank 9, and the stirring part is shaped like a Chinese character. Circulating pump 6 sets up by straining jar 9, and the pipeline links to each other with straining jar 9, and filter 1 sets up outside straining jar 9, links to each other with circulating pump 6 and straining jar 9 top respectively, is provided with knife gate valve 15 on the pipeline of filter 1 and circulating pump 6 and straining jar 9 top connection respectively, and pipeline section upper surface between knife gate valve 15 and the circulating pump 6 on straining jar 9 and the circulating pump 6 connecting line still is provided with the ball valve 16 that washes of connecting outside clean water pipeline. The ultrasonic generator 2 abuts against the outer wall of the filter 1 in a parallel plate mode, the cylindrical filter screen 3 is overlapped with the central axis of the filter 1 and is vertically arranged on a base inside the filter 1, the back flushing sewage discharge outlet 5 is arranged at the bottom of the filter 1 and is communicated with the inner base and an external pipeline, the filter 1 is also provided with a buffer column 4 on the inner wall, and the buffer column 4 obliquely points to the direction of the back flushing sewage discharge outlet 5.

The utility model discloses at the during operation, the outside pipeline valve that knife gate valve 15 and back flush water inlet 12 among the at first closing means link to each other opens the outside pipeline valve that sewage import 8 and sewage row mouth 14 are connected respectively, carries out normal filtering operation.

When the operation is carried out until the content of the treated water discharged from the sewage discharge port 14 is obviously reduced, the filter material layer 11 is prepared for regeneration operation.

Respectively closing the sewage inlet 8 and the sewage outlet 14, opening a valve connected with the knife gate valve 15 and the backwashing water inlet 12 and an external valve connected with the backwashing sewage outlet 5, and closing the flushing ball valve 16.

And (3) injecting backwashing water into the device from a backwashing water inlet 12, beginning to immerse the filter material layer 11 by a backwashing water overflowing filter bed 13, starting the stirring motor 7 and the ultrasonic generator 2 after the water level in the filter tank 9 exceeds the height of the filter material layer 11, and beginning to slowly rotate the stirring rod 10 at the moment to drive the stirring part shaped like the Chinese character 'tian' to uniformly disperse the filter material in water.

Then the circulating pump 6 is started, the backwashing water mixed with the filter material passes through the pipeline and moves according to the sequence of the filter tank 9, the circulating pump 6 and the filter 1, when the mixed liquid enters the filter 1, the filter material is blocked by the buffer column 4 and slowly moves to the bottom of the filter 1, so the mixed liquid is fully cleaned by the ultrasonic wave generated by the ultrasonic generator 2, the separated oily sewage passes through the cylindrical filter screen 3 and passes through the backwashing sewage outlet 5 discharge device, the cleaned filter material moving to the bottom of the filter 1 is driven by the backwashing water flow to enter the filter tank 9 again and is uniformly mixed in the residual filter material layer 11 in the filter tank 9, and the integral cleaning and desorption degree of the filter material layer 11 is improved.

The device is operated circularly, and the adsorbed pollutants in the filter material layer 11 are thoroughly removed after passing through the filter 1 for multiple times and are discharged from the back flushing sewage outlet 5. After cleaning is finished, a knife gate valve 15, a backwashing water inlet 12 and a backwashing sewage outlet 5 on a pipeline connecting the filter tank 9 and the circulating pump 6 are closed, the stirring motor 7 is closed, the flushing ball valve 16 and the sewage outlet 14 are opened, and cleaning water is injected from the flushing ball valve 16 to flush residual filter materials in the pipeline until the whole number of residual filter materials are flushed back into the filter material layer 11.

Then the sewage inlet 8 is opened and all the knife gate valves 15 are closed, and the filter tank 9 can be used for normal sewage filtration.

The utility model discloses the device is through setting up stirring part and ultrasonic filter system, can regenerate oiliness caking filter material effectively, has ensured the normal operating of the device after long-time use.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiments of the present invention are all covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A walnut shell filter for circularly cleaning filter materials comprises a filter (1), an ultrasonic generator (2), a cylindrical filter screen (3), a buffer column (4), a back flush drain outlet (5), a circulating pump (6), a stirring motor (7), a sewage inlet (8), a filter tank (9), a stirring rod (10), a filter material layer (11), a back flush water inlet (12), a filter bed (13), a sewage discharge outlet (14), a knife gate valve (15) and a flushing ball valve (16), wherein the top of the filter tank (9) is provided with the sewage inlet (8), the sewage inlet (8) is connected with an external sewage pipeline, the back flush water inlet (12) is arranged below the side of the tank body of the filter tank (9), the filter bed (13) is arranged inside the filter tank (9), the filter material layer (11) is arranged on the filter bed (13), the sewage discharge outlet (14) is arranged at the bottom of the filter tank (9), the novel filter is characterized in that a stirring motor (7) is further arranged at the top of the filter tank (9), the stirring motor (7) is connected with a stirring rod (10) and extends into the filter tank (9) from the top of the filter tank (9), the circulating pump (6) is arranged beside the filter tank (9) and is connected with the filter tank (9) through a pipeline, the filter (1) is arranged outside the filter tank (9) and is respectively connected with the circulating pump (6) and the top of the filter tank (9), the ultrasonic generator (2) is close to the outer wall of the filter (1) in a parallel plate mode, the cylindrical filter screen (3) is superposed with the central axis of the filter (1) and is vertically arranged on the base inside the filter (1), and the backwashing sewage outlet (5) is arranged at the bottom of the filter (1) and is communicated with the base inside and the external pipeline.

2. The walnut shell filter of claim 1, wherein the filter material is cleaned in a circulating manner by: the stirring rod (10) is divided into a rod body and a stirring part, the rod body is positioned on the central axis of the filtering tank (9) in the vertical direction, and the stirring part is shaped like a Chinese character 'tian' and is completely buried in the filtering material layer (11).

3. The walnut shell filter of claim 1, wherein the filter material is cleaned in a circulating manner by: and the filter (1) is respectively provided with a knife gate valve (15) on pipelines connected with the top of the circulating pump (6) and the top of the filtering tank (9).

4. The walnut shell filter of claim 1, wherein the filter material is cleaned in a circulating manner by: the filter (1) is also provided with a buffer column (4) on the inner wall, and the buffer column (4) is inclined to point to the direction of the backwashing sewage outlet (5).

5. The walnut shell filter of claim 3, wherein the filter material is cleaned in a circulating manner by: and a flushing ball valve (16) connected with an external clean water pipeline is further arranged on the upper surface of the pipeline section between the knife gate valve (15) on the connecting pipeline of the filter tank (9) and the circulating pump (6).