CN220328038U

CN220328038U - Sewage pretreatment device

Info

Publication number: CN220328038U
Application number: CN202321435534.8U
Authority: CN
Inventors: 刘永强; 张莹
Original assignee: Zhuhai Zhonglan Environmental Protection Technology Co ltd
Current assignee: Zhuhai Zhonglan Environmental Protection Technology Co ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2024-01-12
Anticipated expiration: 2033-06-06

Abstract

The utility model relates to a sewage pretreatment device which is convenient to clean and operate and mainly comprises a sewage separator and a sewage filter, wherein the sewage separator comprises a first box body, a cover plate is arranged at the top of the first box body, a first water inlet is formed in the cover plate, a static screen is arranged at the bottom of the cover plate, a rotating plate is arranged at the bottom of the static screen, the bottom of the rotating plate is connected with a motor, an inclined plate is arranged at the bottom of the box body and is connected with a discharge hole, a first water outlet is formed in the side edge of the bottom of the first box body, the sewage filter comprises a second box body, a second water inlet is formed in the bottom of the second box body, a first filter plate, a second filter plate and a third filter plate are arranged in the second box body, and a second water outlet is formed in the bottom of the second box body. The utility model primarily separates the massive garbage of sewage from liquid, filters the residual massive particles in the liquid, realizes self-cleaning function, and is suitable for the technical field of sewage treatment.

Description

Sewage pretreatment device

Technical Field

The utility model is suitable for the technical field of sewage treatment, and particularly relates to a sewage pretreatment device.

Background

The sewage treatment is to make sewage reach a certain water quality standard by physical, chemical, biological and other methods so as to facilitate the recycling or discharging process, the sewage treatment aims at protecting water resources and environment and preventing water pollution and water shortage, the sewage treatment process is generally divided into four stages of pretreatment, primary treatment, secondary treatment and tertiary treatment, and the pretreatment is to perform preliminary separation, filtration, adjustment and other operations on the original sewage so as to remove massive garbage, grease, suspended matters and the like in the original sewage, lighten the burden of the subsequent process and improve the quality of effluent.

The existing sewage pretreatment devices mainly comprise grids, grit chambers, regulating tanks and the like, and the devices can realize preliminary separation and filtration of sewage, but have some defects. For example, the grid cannot effectively remove fine particles and soluble substances in the sewage, the grit chamber cannot effectively remove floating oil and organic matters in the sewage, and the conditioning chamber cannot effectively remove odor and microorganisms in the sewage. These deficiencies can affect the effectiveness and efficiency of subsequent processes, increasing operating costs and maintenance difficulties.

Disclosure of Invention

The utility model aims to solve the technical problems of overcoming the defects of the prior art, and provides a sewage pretreatment device which can initially separate massive garbage of sewage from liquid, filter residual massive particles in the liquid and realize a certain self-cleaning function.

In order to achieve the above purpose, the sewage pretreatment device of the utility model adopts the following technical scheme:

the utility model provides a sewage pretreatment device, includes sewage separator, sewage filter, sewage separator includes first box, first box top is equipped with the apron, apron department is equipped with first water inlet, the apron bottom is equipped with static screen, and sewage gets into static screen and separates big piece rubbish in the sewage and liquid, and big piece rubbish remains in the static screen, and liquid then discharges outside the static screen, static screen bottom is equipped with the rotor plate, the motor is connected to the rotor plate bottom, and the motor drive rotor plate rotates, and outside the static screen of big piece rubbish discharge, first box bottom is equipped with the swash plate, the discharge gate is connected to the swash plate, and rubbish passes through the swash plate slides the discharge gate and discharges, first box bottom side is equipped with first delivery port, carries out preliminary filtration's sewage and passes through first delivery port discharges, sewage filter includes the second box, the second box side is equipped with the second water inlet, be equipped with first filter, second filter, third in the second box, sewage exists big type granule through first, second filter, third filter.

Further, the second box top is equipped with self-cleaning device, self-cleaning device includes the storage water tank, is equipped with the water pump in the storage water tank, and clean pipeline is connected to the water pump, and the water pump is to cleaning solution or water propelling movement to clean pipeline, and clean pipeline department is equipped with first valve, and the speed of valve control cleaning solution output, clean pipeline end-to-end connection high-pressure squirt.

Further, the back flushing device is connected to the second water outlet, the back flushing device comprises a shell, a filter screen is arranged in the shell, the filter screen effectively intercepts impurities in water and is easy to back flushing, an electric valve is arranged on the side edge of the shell, the electric valve is connected with a valve plate, the electric valve controls the direction of the valve plate according to an electric signal, a differential pressure switch is arranged below the electric valve, the differential pressure switch detects the inlet and outlet differential pressure and is beneficial to controlling back flushing time, a third water outlet is arranged below the shell, an electric blowdown valve is arranged on the side edge of the third water outlet, and blowdown is started according to the signal.

Further, the diameters of the filtering holes of the first filtering plate, the second filtering plate and the third filtering plate of the second box body are sequentially arranged from top to bottom from large to small, and sewage sequentially passes through the first filtering plate, the second filtering plate and the third filtering plate to filter particles from coarse particles to fine particles.

Further, be connected by the connecting pipe between first box and the second box, connecting pipe department is equipped with the second valve, controls the second valve and controls the sewage inflow second box's that carries out preliminary filtration speed, prevents that sewage inflow speed can't match filtration efficiency, leads to filtering quality low.

Further, the first box top is equipped with visual window form, and the static screen behavior and the interior rubbish accumulation condition of sieve are looked over to the accessible window form, and the outside of window form is equipped with the baffle, prevents dust or spot pollution window form, causes window form visibility to become low.

Compared with the prior traditional sewage pretreatment device, the utility model has at least the following

The beneficial effects are that:

1. in the sewage pretreatment device provided by the utility model, sewage enters the static screen through the water inlet to complete the filtration of large garbage in the sewage in the first stage, the filtered garbage is discharged through the notch exposed after the rotation of the rotary plate and then slides out to the discharge port through the inclined plate, the filtered sewage flows into the second box body through the connecting pipe, the sewage is in the second box body and passes through the three layers of filter plates to sequentially complete the filtration of particles in the sewage from large to small, and after the filtration is completed, purified water is discharged through the second water outlet, so that the pretreatment of the sewage is completed.

2. In the spraying dust fall type absorption device provided by the utility model, the self-cleaning device is arranged at the top of the second box body, when self-cleaning is needed, the valve is opened, so that cleaning liquid is sprayed out of the spray head, the interior of the sewage separator is flushed, and garbage and particles attached to the interior are flushed away; the washed garbage and particles are discharged from the first water outlet along with the cleaning liquid, and the second water outlet is connected with a back flushing device and used for flushing and cleaning the filter screen, so that the blockage is prevented, the efficiency is prevented from being influenced, and the service life is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic cross-sectional structure of the sewage pretreatment apparatus;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A;

fig. 3 is a schematic cross-sectional structure of the sewage pretreatment apparatus;

fig. 4 is a schematic cross-sectional structure of the sewage pretreatment apparatus;

fig. 5 is a schematic structural view of the static screen.

Detailed Description

The present utility model will be further described with reference to the following specific examples, but it should be noted that the present examples are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation procedures are given, but the protection scope of the present utility model is not limited to the following examples.

As shown in fig. 1-5, a sewage pretreatment device comprises a sewage separator 1 and a sewage filter 2, wherein the sewage separator 1 comprises a first box body 3, a cover plate 31 is arranged at the top of the first box body 3, a first water inlet 4 is arranged at the position of the cover plate 31, a static screen 5 is arranged at the bottom of the cover plate 31, sewage enters the static screen 5 from the first water inlet 4, the static screen 5 separates massive garbage in the sewage from liquid, the massive garbage is left in the static screen 5, the liquid is discharged out of the static screen 5, a visual window 21 is arranged at the top of the first box body 3, the working condition of the static screen 5 and the garbage accumulation condition in the screen can be checked through the visual window 21, a baffle 22 is arranged at the outer part of the visual window 21, the visual window 21 is prevented from being polluted by dust or dirt, the visibility of the visual window 21 is reduced, a rotating plate 6 is arranged at the bottom of the static screen 5, the motor 7 is connected to the bottom of the rotating plate 6, when the excessive accumulation of garbage is seen from the window 21, the motor 7 can be controlled by the button 23, the rotating plate 6 is driven to rotate, the notch at the bottom of the static screen 5 is exposed, the massive garbage is discharged out of the static screen 5, the bottom of the first box 3 is provided with the inclined plate 32, the inclined plate 32 is connected with the discharge hole 33, the garbage slides to the discharge hole 33 to be discharged through the inclined plate 32, the side edge of the bottom of the first box 3 is provided with the first water outlet 41, the sewage filter comprises the second box 8, the side edge of the second box 8 is provided with the second water inlet 9, the first box 3 and the second box 8 are connected by the connecting pipe 19, the second valve 20 is arranged at the connecting pipe 19, the speed of the sewage which is primarily filtered is controlled by the second valve 20 to flow into the second box 8 is prevented from being matched with the filtering efficiency, leading to filtering quality low, preliminary filtration's sewage flows into second box 8 from first box 3 through connecting pipe 19, be equipped with first filter 81, second filter 82, third filter 83 in the second box 8, sewage passes through first filter 81, second filter 82, third filter 83, filters large-scale granule and the greasy dirt that exist in the sewage, second box 8 bottom is equipped with second delivery port 91, and the sewage after the filtration is discharged from second delivery port 91.

Embodiment two: the top of the second box body 8 is provided with a self-cleaning device 10, the self-cleaning device 10 comprises a water storage tank 11, the side edge of the water storage tank 11 is provided with a third water inlet 111, a water pump 12 is arranged in the water storage tank 11, the water pump 12 is connected with a cleaning pipeline 13, the water pump 12 pushes cleaning liquid or water to the cleaning pipeline 13, a first valve 131 is arranged in the cleaning pipeline 13, the first valve 131 controls the output speed of the cleaning liquid, the tail end of the cleaning pipeline 13 is connected with a high-pressure water gun 14 to extend into the first box body 3, so as to conveniently clean stains on a static screen 5, the blockage is prevented, the position of a second water outlet 91 is connected with a back flushing device 15, the back flushing device 15 comprises a shell 151, a filter screen 152 is arranged in the shell 151, the filter screen 152 effectively intercepts impurities in water, the back flushing is easy, the side edge of the shell 151 is provided with an electric valve 153, the electric valve 153 is connected with a valve plate 1531, the electric valve 153 controls the direction of the valve plate 1531 according to the electric signal, the electric valve 153 has a differential pressure switch 16 under the electric valve 153, the differential pressure switch 16 detects the inlet and outlet differential pressure, which is beneficial to controlling the backwashing time, the casing 151 has a third water outlet 17 under the casing, the side of the third water outlet 17 has an electric blow-down valve 18, the electric valve 153 controls the valve plate 1531 to be opened according to the signal to start to blow down, during normal filtration, the water to be treated filters the water to flow out from the third water outlet 17 through the filter screen 152, the fine particle impurities and suspended matters in the water are deposited near the blow-down outlet due to the inertia effect, during backwashing, the electric valve 153 controls the valve plate 1531 to be closed, the water enters the interlayer of the casing 151 after filtered by the first half filter screen 152 due to the differential pressure effect, enters the filter screen 152 from the outside of the filter screen 152 reversely due to the differential pressure effect, washes the impurities adhered on the mesh, and is discharged from the sewage outlet to achieve the purpose of cleaning the filter screen 152.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather as utilizing the equivalent structural changes made by the description of the present utility model and the accompanying drawings or directly/indirectly applied to other related technical fields are included in the scope of the utility model.

Claims

1. The utility model provides a sewage pretreatment device, includes sewage separator (1), sewage filter (2), its characterized in that: the sewage separator (1) comprises a first box body (3), a cover plate (31) is arranged at the top of the first box body (3), a first water inlet (4) is formed in the cover plate (31), a static screen (5) is arranged at the bottom of the cover plate (31), a rotating plate (6) is arranged at the bottom of the static screen (5), a motor (7) is connected to the bottom of the rotating plate (6), an inclined plate (32) is arranged at the bottom of the first box body (3), a discharge hole (33) is connected to the inclined plate (32), a first water outlet (41) is formed in the side edge of the bottom of the first box body (3), a second water inlet (9) is formed in the side edge of the sewage filter (2), a first filter plate (81), a second filter plate (82) and a third filter plate (83) are arranged in the second box body (8), and a second water outlet (91) is formed in the bottom of the second box body (8).

2. The wastewater pretreatment apparatus according to claim 1, wherein: the self-cleaning device is characterized in that the self-cleaning device (10) is arranged at the top of the second box body (8), the self-cleaning device (10) comprises a water storage tank (11), a water pump (12) is arranged in the water storage tank (11), the water pump (12) is connected with a cleaning pipeline (13), a first valve (131) is arranged at the cleaning pipeline (13), and the tail end of the cleaning pipeline (13) is connected with a high-pressure water gun (14).

3. The wastewater pretreatment apparatus according to claim 1, wherein: the back flushing device is characterized in that the second water outlet (91) is connected with the back flushing device (15), the back flushing device comprises a shell (151), a filter screen (152) is arranged in the shell (151), an electric valve (153) is arranged on the side edge of the shell (151), the electric valve (153) is connected with a valve plate (1531), a differential pressure switch (16) is arranged below the electric valve (153), a third water outlet (17) is arranged below the shell (151), and an electric blow-down valve (18) is arranged on the side edge of the third water outlet (17).

4. The wastewater pretreatment apparatus according to claim 1, wherein: the diameters of the filter holes of the first filter plate (81), the second filter plate (82) and the third filter plate (83) of the second box body (8) are sequentially arranged from top to bottom from large to small.

5. The wastewater pretreatment apparatus according to claim 1, wherein: the first box body (3) is connected with the second box body (8) through a connecting pipe (19), and a second valve (20) is arranged at the connecting pipe (19).

6. The wastewater pretreatment apparatus according to claim 1, wherein: the top of the first box body (3) is provided with a visual window body (21), and a baffle plate (22) is arranged outside the window body.