CN216986445U - Multi-medium filter - Google Patents

Abstract

The utility model relates to the technical field of water treatment equipment, in particular to a multi-media filter, which comprises a tank body and a plurality of support legs for supporting the tank body, wherein a backwashing water outlet is formed in the top of the tank body, a trapezoidal wire grating net is arranged at the tail end of the backwashing water outlet and is positioned above the inner part of the tank body, a water inlet is formed in the tangent position above the outer side wall of the tank body, a filter material is arranged in the tank body, a plurality of filter caps are arranged below the filter material, a primary filter water discharge port and a three-way pipe fitting II are respectively connected to the center of the bottom of the tank body through a three-way pipe fitting I, and a backwashing water inlet and a backwashing water outlet are respectively connected to the three-way pipe fitting II. The utility model has reasonable design, effectively avoids the disorder of the filter material layer, reduces the abrasion and the loss of the filter material during back flushing and improves the back flushing effect.

Description

Multi-medium filter

Technical Field

The utility model relates to the technical field of water treatment equipment, in particular to a multi-media filter.

Background

The multi-medium filter adopts more than two mediums as a medium filter of a filter layer, water with higher turbidity passes through granular or non-granular materials with certain thickness under certain pressure, thereby effectively removing suspended impurities to clarify the water, and common filter materials comprise quartz sand, anthracite, manganese sand and the like, and are mainly used for water treatment turbidity removal, water softening, pre-stage pretreatment of pure water and the like, and the effluent turbidity can reach below 3 ℃. In an industrial circulating water treatment system, the device is used for removing impurities, adsorption oil and the like in sewage, so that the water quality meets the requirement of recycling. The filtering effect is mainly to remove suspended or colloidal impurities in water, particularly to effectively remove micro particles, bacteria and the like which cannot be removed by a precipitation technology, and BOD5, COD and the like also have a certain removing effect.

The water inlet of the existing multi-media filter is opposite to the filter material layer, the filter material layer is directly impacted by sewage, the stability of the filter material layer can be damaged, suspended matters and impurities in the sewage can enter the filter material layer along with the impact force of the sewage, and the cleaning difficulty of the filter material layer in the later period is increased. After filtering a period of time, the filter material layer needs to be reversely cleaned, a large amount of backwash water and high-lift backwash water pump need to be configured in the conventional process, a large amount of backwash water and electric power are consumed, the sewage treatment burden is increased, the power consumption is also large, and the excessive backwash strength can cause disorder of the multi-medium filter material layer and loss of the filter material.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model provides a multi-media filter.

In order to realize the purpose, the technical scheme of the utility model is as follows: a multi-media filter comprises a tank body and a plurality of supporting legs for supporting the tank body, wherein a backwashing water outlet is formed in the top of the tank body, a trapezoidal wire grating net is arranged at the tail end of the backwashing water outlet and located above the inner portion of the tank body, a water inlet is formed in the tangent position above the outer side wall of the tank body, a filter material is arranged in the tank body, a plurality of filter caps are arranged below the filter material, a primary filter water outlet and a three-way pipe fitting II are connected to the center of the bottom of the tank body through the three-way pipe fitting I respectively, and a backwashing water inlet and a backwashing water outlet are connected to the three-way pipe fitting II respectively.

Furthermore, a micropore air distribution pipe is arranged below the filter cap and connected with an air inlet arranged on the outer side of the tank body.

Furthermore, trapezoidal silk grid net includes connecting pipe, reducing pipe, trapezoidal silk and blind plate, the winding of trapezoidal silk is in the lower extreme of trapezoidal silk grid net constitutes outer narrow wide passageway in, blind plate detachable sets up the lower surface of trapezoidal silk grid net.

Furthermore, reinforcing ribs are arranged on the outer sides of the trapezoidal filaments.

Furthermore, the micropore gas distribution pipe comprises a gas distribution main pipe and a plurality of gas distribution branch pipes, and the gas distribution branch pipes are detachably arranged on the gas distribution main pipe.

Furthermore, an upper manhole is arranged above the outer side wall of the tank body, and a bottom manhole is arranged at the bottom of the tank body.

Furthermore, a discharge opening is formed in the lower portion of the outer side wall of the tank body.

The utility model has the following beneficial effects:

1. according to the utility model, the pipeline of the water inlet is horizontally tangent to the surface of the tank body, when sewage enters the tank body from the water inlet, the sewage rotationally flows in the tank body, and suspended matters and water are layered and float on the upper layer of liquid by utilizing a rotational flow division principle, so that the interception load of the suspended matters in the filter material is reduced, the normal filtering working time is prolonged, the working efficiency of the multi-medium filter is improved, and meanwhile, the phenomenon that the filter material is disordered due to the fact that the sewage directly impacts the filter material is avoided; during back washing, the amount of back washing water is reduced, and water resources are saved.

2. The multi-media filter is provided with the ladder-shaped wire grating net, when backwashing is carried out on the multi-media filter, backwashing water flows through the ladder-shaped wire grating net, filter materials are intercepted by the grating net, gaps between the grating net and the grating net are in a ladder shape, a small amount of broken filter materials with small volume are discharged through the gaps, and the filter materials larger than the gaps are intercepted by the grating net. Because of the gap from little grow, the filter material is difficult for blocking in the gap, and a small amount of filter materials that block in the gap also can break away from the gap under the rotatory scouring force of crossing water. The ladder-shaped wire grating net bottom is provided with the blind plate, and the blind plate can block most filter material that rebounds, and the effectual wearing and tearing that have reduced the filter material run off, avoid the filter material layer chaotic, keep normal filter effect.

3. The bottom of the tank body is provided with the microporous air distribution pipe, and air flow discharged by the air distribution pipe can be uniformly dispersed into a filter material in the multi-medium filter, so that the filter material is uniformly stressed and the distribution of the filter material layer is not easy to damage; the gas distribution branch pipe is detachably arranged on the gas distribution main pipe, and when the gas outlet hole of the gas distribution branch pipe is blocked, a worker can conveniently detach and maintain the gas distribution branch pipe.

Drawings

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

FIG. 2 is a schematic view of a ladder wire grid mesh structure of the present invention;

FIG. 3 is a horizontal cross-sectional view of a ladder wire grid mesh of the present invention;

FIG. 4 is a schematic view of a microporous gas distribution tube structure of the present invention;

FIG. 5 is a schematic vertical view of the microporous gas distribution tube of the present invention;

FIG. 6 is a connection diagram of the water inlet and the tank body according to the present invention;

FIG. 7 is a schematic diagram of backwash water inlet and outlet configurations of the present invention.

The notation in the figure is: 1. a ladder wire grid mesh; 2. a micropore air distribution pipe; 3. a water inlet; 4. backwashing the water inlet; 5. a water outlet; 6. backwashing the water outlet; 7. a tank body; 8. filtering the material; 9. an air inlet; 10. an upper manhole; 11. a discharge opening; 12. a filter cap; 13. a support leg; 14. a bottom manhole; 15. a primary filter water discharge port; 16. a three-way pipe fitting I; 17. a three-way pipe fitting II; 101. a connecting pipe; 102. a reducer pipe; 103. reinforcing ribs; 104. trapezoidal filaments; 105. a blind plate; 201. a gas distribution main pipe; 202. a gas distribution branch pipe; 203. a release aperture; 204. a communicating pipe; 205. a connecting member.

Detailed Description

For a better understanding of the objects, structure and function of the utility model, a multimedia filter of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, a multimedia filter includes a tank 7 and three legs 13 for supporting the tank 7. The top of the tank body 7 is provided with a backwashing water outlet 6, the tail end of the backwashing water outlet 6 is connected with a trapezoidal wire grating net 1, and the trapezoidal wire grating net 1 is positioned above the inner part of the tank body 7. A water inlet 3 is arranged above the side wall of the tank body 7, and a pipeline of the water inlet 3 is tangent to the side wall of the circular tank body 7. An upper manhole 10 is further arranged above the side wall of the tank body 7, and the upper manhole 10 can facilitate workers to maintain and disassemble the trapezoidal wire grating net 1. The inside layering of jar body 7 is provided with the filter material 8 granule of equidimension not, and filter material 8 below is provided with a plurality of filter cap 12, has seted up discharge opening 11 with jar body 7 of 8 same level eminences in filter material bottom. A micropore air distribution pipe 2 is arranged below the filter cap 12, the bottom end of the micropore air distribution pipe 2 is connected with an air inlet 9, and the air inlet 9 is arranged on the outer side of the tank body 7. A bottom manhole 14 is arranged below the tank body 7. The central position of the bottom of the tank body 7 is respectively connected with an initial filtered water discharge port 15 and a three-way pipe fitting II 17 through a three-way pipe fitting I16, and the three-way pipe fitting II 17 is respectively connected with a backwashing water inlet 4 and a water outlet 5.

The ladder wire grating net 1 comprises a connecting pipe 101, a radius pipe 102, a reinforcing rib 103, ladder wires 104 and a blind plate 105. The connecting pipe 101 is used for connecting the backwashing water outlet 6, the reducer pipe 102 is connected below the connecting pipe 101, the grille net formed by winding the trapezoidal wires 104 is connected below the reducer pipe 102, and the blind plate 105 is detachably connected below the grille net. The material of the ladder-shaped wire grid net 1 is 304 stainless steel, so that the ladder-shaped wire grid net is strong in corrosion resistance and not easy to damage. The vertical walls of the ladder-shaped wire grating net 1 form a plurality of channels with narrow outer parts and wide inner parts, and the horizontal sections of the channels are in a ladder shape. When backwashing is carried out, part of filter materials 8 are driven by backwashing water to impact the blind plate 105 below the trapezoidal wire grating net 1 to rebound, a small part of filter materials 8 touch the outer wall of the trapezoidal wire grating net 1 and are blocked at the outer side of the grating net, the damaged filter materials 8 can be discharged along with the backwashing water through the grating net, the channel is designed to be in a structure with a narrow outer part and a wide inner part, the condition that the filter materials 8 block the trapezoidal wire grating net 1 cannot occur, and the normal operation of the backwashing process is ensured.

The microporous gas distribution pipe 2 comprises a gas distribution main pipe 201, a plurality of gas distribution branch pipes 202, a release hole 203, a communicating pipe 204 and a connecting piece 205. The gas distribution branch pipe 202 is detachably connected to the gas distribution main pipe 201 through a connecting piece 205, a plurality of release holes 203 are formed in both the gas distribution main pipe 201 and the gas distribution branch pipe 202, and the gas distribution main pipe 201 is connected with the gas inlet 9 on the outer side of the tank body 7 through a communicating pipe 204 below.

When the filter material is used, sewage enters the tank body 7 through the water inlet 3, flows in the tank body 7 in a rotating mode, and is layered and floats on the upper layer of liquid by utilizing the cyclone separation principle, so that the interception load of suspended matters in the filter material 8 is reduced, and the working time of normal filtration is prolonged.

After a period of filtration, the multimedia filter needs to be back-cleaned. The staff closes the valves of the water inlet 3 and the water outlet 5 and opens the valve of the backwashing water inlet 4 and the valve of the backwashing water outlet 6 at the lower part. The backwash water enters the tank body 7 through the backwash water inlet 4, partial impurities on the upper surface layer of the filter material 8 can be washed away by water flow, after a period of time, the valve of the air inlet 9 is opened, compressed air enters the tank body 7 through the release holes 203 in the microporous air distribution pipe 2, the compressed air uniformly accompanies the rising water flow, trapped objects of the filter material 8 are entrained and rise, and the filter is sent out from the backwash water outlet 6. After backwashing is finished, the backwashing water inlet 4 valve and the backwashing water outlet 5 valve are closed, the water inlet 3 valve and the initial filtered water discharge port 15 valve are opened, after sewage flows through for a period of time, the initial filtered water discharge port 15 valve is closed, the water outlet 5 valve is opened, and the multi-media filter starts to work normally again.

It is to be understood that the present invention has been described with reference to certain embodiments and that various changes in form and details may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (7)

1. A multimedia filter comprising a tank (7) and a plurality of legs (13) supporting said tank (7), characterized in that: the backwashing water purifier is characterized in that a backwashing water outlet (6) is formed in the top of the tank body (7), a trapezoidal wire grating net (1) is arranged at the tail end of the backwashing water outlet (6), the trapezoidal wire grating net (1) is located above the inner part of the tank body (7), a water inlet (3) is formed in the tangent position above the outer side wall of the tank body (7), a filter material (8) is arranged inside the tank body (7), a plurality of filter caps (12) are arranged below the filter material (8), the center of the bottom of the tank body (7) is respectively connected with a primary filter water outlet (15) and a tee pipe fitting II (17) through a tee pipe fitting I (16), and the tee pipe fitting II (17) is respectively connected with a backwashing water inlet (4) and a water outlet (5).

2. A multi-media filter according to claim 1, wherein: a micropore air distribution pipe (2) is arranged below the filter cap (12), and the micropore air distribution pipe (2) is connected with an air inlet (9) arranged at the outer side of the tank body (7).

3. A multi-media filter according to claim 2, wherein: trapezoidal silk grid net (1) is including connecting pipe (101), reducing pipe (102), trapezoidal silk (104) and blind plate (105), trapezoidal silk (104) winding is in the narrow interior wide passageway outside the lower extreme of trapezoidal silk grid net (1) constitutes, blind plate (105) detachable sets up the lower surface of trapezoidal silk grid net (1).

4. A multi-media filter according to claim 3, wherein: and reinforcing ribs (103) are arranged on the outer sides of the trapezoidal filaments (104).

5. A multi media filter according to any one of claims 2 to 4, wherein: micropore gas distribution pipe (2) are responsible for (201) and a plurality of gas distribution branch pipe (202) including the gas distribution, gas distribution branch pipe (202) detachable sets up be responsible for on (201) the gas distribution.

6. A multi-media filter as defined in claim 1, wherein: an upper manhole (10) is arranged above the outer side wall of the tank body (7), and a bottom manhole (14) is arranged at the bottom of the tank body.

7. A multi-media filter according to claim 1, wherein: and a discharge opening (11) is formed below the outer side wall of the tank body (7).

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