CN211513554U

CN211513554U - Back flush filter

Info

Publication number: CN211513554U
Application number: CN201922347478.2U
Authority: CN
Inventors: 要革委
Original assignee: Baoding Beijie Environmental Protection Equipment Manufacturing Co ltd
Current assignee: Baoding Beijie Environmental Protection Equipment Manufacturing Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-18
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a backwashing filter, which comprises a water inlet pipe, a water outlet pipe, a filter, a backwashing water inlet pipe and a backwashing water drain pipe; more than two filter layers are arranged in the filter, the diameters of particles in the filter layers are sequentially increased from top to bottom, a flow guide channel is reserved between every two adjacent filter layers, and a spray plate is arranged in the flow guide channel; the spray plate is provided with a vertically through flow guide through hole, the lower end surface and the periphery of the spray plate are provided with flushing spray holes, and a water inlet of the spray plate is communicated with a backwashing water inlet pipe; this application is washed its filter layer of below separately through the board that sprays in the water conservancy diversion passageway to spray the board washing orifice slope water that sprays all around, can wash the filter layer and be close to the region at filter edge, the thoroughness that the guarantee washed, this application is effectual to be improved and is washed effect and cleaning efficiency.

Description

Back flush filter

Technical Field

The utility model relates to a sewage purification treatment device field especially relates to a back flush filter.

Background

In the sewage treatment process, water enters the filter from the inlet, as the filtration is carried out, dirt and impurities in the water are gradually accumulated on the filter layer, the filter layer is blocked, so that the filtration effect and the water quality of the effluent are influenced, at the moment, the filter is cleaned to recover the treatment capacity of the filter, the traditional cleaning process is generally manual operation or automatic backwashing at regular intervals, if the filter which cannot be automatically backwashed is used, the filter needs to be disassembled after the filter element is blocked, the filter element is taken out for cleaning, and the production pause and the reduction of the working efficiency are caused; the existing backwashing filter is only flushed by water columns, so that the flushing effect is poor and the cleaning efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a back flush filter to solve the problem that above-mentioned prior art exists, it is poor to solve current back flush filter washing effect, problem that the cleaning efficiency is low.

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

the utility model provides a backwashing filter, which comprises a water inlet pipe, a water outlet pipe, a filter, a backwashing water inlet pipe and a backwashing water drain pipe; the water inlet pipe is communicated with the sewage tank and the bottom of the filter, and the water outlet pipe is communicated with the upper layer of the filter and the clean water tank; the water inlet of the back-flushing water inlet pipe is communicated with the clean water tank, and the back-flushing water discharge pipe is communicated with the bottom of the filter and the back-flushing sewage tank.

More than two filter layers are arranged in the filter, the diameters of particles in the filter layers are sequentially increased from top to bottom, a flow guide channel is reserved between every two adjacent filter layers, and a spray plate is arranged in the flow guide channel; in order to ensure that the spray plate can completely clean the lower filter layer, the area of the spray plate should cover most of the area of the flow guide channel, preferably 2/3-3/4 of the area of the flow guide channel; in order to ensure that water flow can smoothly pass through different filter layers, the spraying plate is provided with a vertically through flow guide through hole; the lower end surface and the periphery of the spraying plate are provided with flushing spray holes, so that sprayed water can cover the upper surface of the whole filter layer; and the water inlet of the spraying plate is communicated with the backwashing water inlet pipe.

Preferably, the traditional filter layer is fixed on the inner wall of the filter, so that the filter is inconvenient to maintain and replace, and in order to be convenient to disassemble, a fixed shaft is fixedly arranged at the central position of the bottom surface of the filter, and the filter layer is fixedly connected with the fixed shaft and can be integrally disassembled and assembled; the periphery of the filter layer is fixed with the inner wall of the filter.

Preferably, a gap is reserved between the spraying plate and the inner wall of the filter, so that water flow in the spraying plate can be smoothly sprayed out.

Preferably, the water outlet of the backwashing water inlet pipe is close to the uppermost spraying plate.

Preferably, the top end of the filter is provided with an exhaust valve.

Preferably, the bottom end of the filter is a slope with an inclined angle.

The utility model discloses a following technological effect: this application is through setting up the water conservancy diversion passageway between adjacent filter layer, sets up in the water conservancy diversion passageway and sprays the board, sprays the board and washes its filter layer of below separately to spray board washing orifice slope water jet downwards all around, can wash the region that the filter layer is close to the filter edge, the thoroughness that the guarantee was washed, the utility model discloses effectual back flush effect and the cleaning efficiency of having improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

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

fig. 2 is a schematic diagram of the structure of the spray plate of the present invention.

The system comprises a water inlet pipe 1, a water inlet valve 2, a first water pumping motor 3, a water outlet pipe 4, a water outlet valve 5, a filter 6, a filter layer 61, a flow guide channel 62, a spray plate 63, a flushing spray hole 64, a flow guide through hole 65, a backwashing water inlet pipe 7, a backwashing water inlet valve 8, a second water pumping motor 9, a backwashing water discharge pipe 10, a backwashing water discharge valve 11, a sewage tank 12, a clean water tank 13, a backwashing sewage tank 14, an exhaust valve 15 and a fixed shaft 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The utility model provides a back flush filter, it includes inlet tube 1, outlet pipe 4, filter 6, back flush inlet tube 7 and back flush drain pipe 10.

The water inlet pipe 1 is communicated with the sewage pool 12 and the bottom of the filter 6, and the first water pumping motor 3 and the water inlet valve 2 are sequentially arranged on the water inlet pipe 1; the water outlet pipe 4 is communicated with the upper layer of the filter 6 and the clean water tank 13, and the water outlet pipe 4 is provided with a water outlet valve 5.

A water inlet of the back flush water inlet pipe 7 is communicated with a clean water tank 13, and a second water pumping motor 9 and a back flush water inlet valve 8 are sequentially arranged on the back flush water inlet pipe 7; the back flushing water discharging pipe 10 is communicated with the bottom of the filter 6 and a back flushing sewage pool 14, and the back flushing water discharging pipe 10 is provided with a back flushing water discharging valve 11.

More than two filter layers 61 are arranged in the filter 6, and the diameters of the particles in the filter layers 61 are sequentially increased from top to bottom, namely the diameter of the particle in the uppermost filter layer 61 is the smallest, and the diameter of the particle in the lowermost filter layer 61 is the largest; a flow guide channel 62 is reserved between the adjacent filter layers 61, and a spray plate 63 is arranged in the flow guide channel 62; in order to ensure that the spray plate can completely clean the lower filter layer, the area of the spray plate should cover most of the area of the flow guide channel, preferably 2/3-3/4 of the area of the flow guide channel; in order to ensure that water flow can smoothly pass through different filter layers, the spraying plate 63 is provided with a vertically through flow guide through hole 65; a gap is reserved between the spraying plate 63 and the inner wall of the filter 6, so that the fluid can move in the flow guide channel 62, and the phenomenon that the filtering speed is reduced due to the arrangement of the spraying plate 63 is avoided; the lower end surface and the periphery of the spray plate 63 are provided with washing spray holes 64, and the washing spray holes 64 on the periphery of the spray plate 63 spray water downwards in an inclined mode; the water inlet of the spray plate 63 is communicated with the backwashing water inlet pipe 7, the water outlet of the backwashing water inlet pipe 7 is close to the spray plate 63 on the uppermost layer, because the diameter of the particles of the filtering layer 61 on the uppermost layer is smallest, dirt and impurities in water are easy to block gaps among the particles, the filtering layer 61 on the uppermost layer is most difficult to be washed clean, and the pressure intensity at the water outlet of the backwashing water inlet pipe 7 is largest, the spray plate 63 on the uppermost layer close to the water outlet of the backwashing water inlet pipe 7 can divide the largest water flow, and the backwashing effect of the filtering layer 61 on the uppermost.

The fixed shaft 16 is fixedly arranged at the central position of the bottom surface of the filter 6, the filter layer 61 is fixedly connected with the fixed shaft 16, the whole assembly and disassembly can be carried out, the periphery of the filter layer 61 is fixed with the inner wall of the filter 6, the stability of installation of the filter layer 6 is guaranteed by the fixed shaft 16 and the inner wall of the filter 6, and meanwhile, the whole assembly and disassembly are convenient. The top end of the filter 6 is provided with an exhaust valve 15 for exhausting the gas in the filter, so that the reduction of the filtering efficiency due to the existence of the gas is avoided. The bottom end of the filter 6 is a slope surface with an inclination angle, and the slope surface design at the bottom end of the filter 6 ensures that sewage can be gathered together in the backwashing process and then smoothly discharged.

During the filtering process of the filter, the water inlet valve 2, the first water pumping motor 3 and the water outlet valve 5 are in an open state, the backwashing water inlet valve 8, the second water pumping motor 9 and the backwashing water discharge valve 11 are in a closed state, sewage enters the bottom of the filter 6 through the sewage tank 12 and the water inlet pipe 1, is filtered by the multi-layer filtering layer 61, enters the upper part of the filter 6, and enters the clean water tank 13 through the water outlet pipe 4.

During the back flushing operation of the filter, before the back flushing, after the first water pumping motor 3 is closed, the water inlet valve 2 and the water outlet valve 5 are closed, the back flushing water inlet valve 8 and the back flushing water discharge valve 11 are opened, and the second water pumping motor 9 is started; the second water pumping motor 9 pumps clean water in the clean water tank, then the clean water enters each spray plate 63 through the back flush water inlet pipe 7, the spray plates 63 flush the filter layers 61 below the spray plates, and the flushing spray holes 64 on the periphery of the spray plates 63 spray clean water downwards in an inclined mode, so that the areas, close to the edges of the filters 6, of the filter layers 61 can be cleaned, and the flushing thoroughness is guaranteed; the sewage after washing enters a backwashing sewage tank 14 through a backwashing water discharge pipe 10.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. A backwash filter, characterized in that: which comprises a water inlet pipe (1), a water outlet pipe (4), a filter (6), a backwashing water inlet pipe (7) and a backwashing water outlet pipe (10);

the water inlet pipe (1) is communicated with a sewage tank (12) and the bottom of the filter (6), and the water outlet pipe (4) is communicated with the upper layer of the filter (6) and a clean water tank (13);

the water inlet of the backwashing water inlet pipe (7) is communicated with the clean water tank (13), and the backwashing water discharge pipe (10) is communicated with the bottom of the filter (6) and the backwashing sewage tank (14);

more than two filter layers (61) are arranged in the filter (6), the diameters of particles in the filter layers (61) are sequentially increased from top to bottom, a flow guide channel (62) is reserved between every two adjacent filter layers (61), and a spray plate (63) is arranged in the flow guide channel (62); the water-saving backwashing water supply device is characterized in that a flow guide through hole (65) which is through from top to bottom is formed in the spraying plate (63), flushing spray holes (64) are formed in the lower end face and the periphery of the spraying plate (63), and a water inlet of the spraying plate (63) is communicated with the backwashing water inlet pipe (7).

2. The backflush filter of claim 1, wherein: the center position of filter (6) bottom surface is fixed and is provided with fixed axle (16), filter layer (61) with fixed axle (16) fixed connection, the filter layer (61) around with filter (6) inner wall is fixed.

3. The backflush filter of claim 2, wherein: and a gap is reserved between the spraying plate (63) and the inner wall of the filter (6).

4. The backflush filter of claim 1, wherein: the water outlet of the backwashing water inlet pipe (7) is close to the uppermost spraying plate (63).

5. The backflush filter of claim 1, wherein: an exhaust valve (15) is arranged at the top end of the filter (6).

6. The backflush filter of claim 1, wherein: the bottom end of the filter (6) is a slope surface with an inclination angle.