CN223988232U - Sewage treatment device - Google Patents

Abstract

This utility model relates to the field of wastewater treatment equipment technology, specifically to a wastewater treatment device. The device includes a conical cylindrical shell, end caps, an annular mounting plate, multi-stage filtration units, a centrifuge chamber, and a backwashing system. By incorporating two or more stages of filters with gradually increasing filtration levels from bottom to top within the cylinder, combined with an overflow weir design, effective removal of pollutants of different particle sizes is achieved. A spiral guide plate is installed within the centrifuge chamber between the shell and the cylinder to separate large particles using centrifugal force. Backwash nozzles on the top end cap efficiently clean the filters, preventing clogging. Furthermore, the integrated design reduces the equipment's size and addresses the problems of low single-stage filtration efficiency, poor backwashing effect, and high energy consumption in traditional wastewater treatment equipment. This utility model features a compact structure, simple operation, and convenient maintenance, offering advantages such as high efficiency, energy saving, and environmental friendliness. It is suitable for treating complex wastewater, ensuring effluent quality while reducing operating costs.

Description

Sewage treatment device

Technical Field

The utility model relates to the technical field of sewage treatment equipment, in particular to a sewage treatment device.

Background

With the increasing shortage of global water resources and the aggravation of environmental pollution problems, sewage treatment becomes an important link of environmental protection. Although the conventional sewage treatment filter device can meet basic purification requirements to a certain extent, efficiency and technical defects of the conventional sewage treatment filter device are gradually revealed when the conventional sewage treatment filter device faces complex water quality.

Single stage filtration systems in widespread use today rely primarily on a single type of screen for contaminant interception. Because contaminants of different particle sizes need to be removed effectively by different filter media, a single screen can only provide an effective filtering effect against particulate matter of a particular size. In addition, for the complex water quality sewage with larger impurity granularity range, the filter screen is easy to be blocked, and the filtering efficiency is further reduced. In order to cope with such complex water quality, multiple filtration processes are often required to be overlapped, which not only increases the whole volume of the equipment, but also increases the maintenance cost and the operation difficulty. In addition, the back flushing pressure is large, the efficiency is low, and the water waste amount is large.

In view of the above problems, the present utility model aims to provide a sewage treatment device, which reduces the occupied space of the device through integrated design, improves the filtering efficiency, optimizes the back flushing process to enhance the cleaning effect, and achieves the sewage treatment goals of high efficiency, energy saving and environmental protection.

Disclosure of utility model

The utility model aims to provide a sewage treatment device for solving the technical problems.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The sewage treatment device comprises an outer shell, wherein an end cover is arranged at the top end of the outer shell;

The outer shell is a conical cylinder;

an annular mounting plate is arranged at the top in the outer shell, and a water inlet is arranged below the annular mounting plate;

The outer shell is sleeved with a filtering unit fixed on the annular mounting plate;

the filtering unit comprises a barrel, more than two stages of filtering screens with filtering grades gradually changed from low to high are sequentially arranged in the barrel from bottom to top, an overflow weir is arranged above the filtering screen positioned at the top, and a water outlet extending out of the outer shell is arranged on the overflow weir;

A centrifugal cavity is formed between the outer shell and the cylinder body, and a spiral guide plate is arranged in the centrifugal cavity;

The lower end of the outer shell is provided with a slag discharge port, and the slag discharge port is provided with a slag discharge valve;

And the end cover is provided with a back flushing spray head.

Preferably, the spiral guide plate is arranged on the inner side wall of the outer shell or the outer side wall of the barrel.

Preferably, the water inlet is arranged at the tangential inlet of the upper end of the spiral guide plate.

Preferably, at least a first filter screen, a second filter screen and a third filter screen are sequentially arranged in the cylinder from top to bottom.

Preferably, a sealing ring plate matched and sealed with the annular mounting plate is arranged at the top of the outer side wall of the cylinder body, and a flange plate used for sealing connection is arranged on the sealing ring plate.

Preferably, the overflow weir comprises an overflow plate arranged on the inner side of the closed ring plate, and an overflow port is formed in the overflow plate.

Preferably, the height of the overflow weir is lower than the height of the water inlet.

Compared with the prior art, the utility model has the following beneficial effects:

1. through installing the filter screen more than the two-stage of filtration grade from low to high gradual change in proper order from down to the supreme in the barrel, can effectively get rid of the pollutant of different particle diameters, promote whole filter effect. The design can adapt to complex water quality with larger impurity granularity range, and reduce the problem of efficiency reduction caused by the blockage of a single filter screen;

2. The compact design scheme is adopted, and the functions of physical filtration, centrifugal separation, back flushing cleaning and the like are integrated, so that the whole volume of the equipment is greatly reduced, the space is saved, and the equipment is more suitable for places with limited places;

3. The centrifugal force generated in the centrifugal cavity formed between the outer shell and the cylinder body by the spiral guide plate is utilized, so that heavier granular substances are precipitated to the bottom and discharged through the slag discharge port, and the process does not need additional power support, thereby reducing energy loss and improving the energy use efficiency.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a schematic diagram of the overall split structure of the present utility model.

The reference numeral 100-an outer shell, 110-a water inlet, 120-a spiral guide plate, 200-an end cover, 300-a back flushing spray head, 400-a slag discharging valve, 500-a filtering unit, 510-a third filter screen, 520-a second filter screen, 530-a first filter screen, 540-an overflow weir, 550-a closed annular plate and 560-a water outlet.

Detailed Description

In order that those skilled in the art will better understand the present utility model, the following technical scheme of the present utility model will be further described with reference to the accompanying drawings and examples.

Example 1

FIGS. 1 to 2 show a sewage treatment apparatus comprising an outer housing 100, an end cap 200 being installed at the top end of the outer housing 100;

the outer housing 100 is a conical cylinder;

An annular mounting plate is arranged at the inner top of the outer shell 100, and a water inlet 110 is arranged below the annular mounting plate;

The outer housing 100 is sleeved with a filter unit 500 fixed on the annular mounting plate;

The filtering unit 500 comprises a cylinder, wherein more than two stages of filtering screens with filtering grades gradually changed from low to high are sequentially arranged in the cylinder from bottom to top, an overflow weir 540 is arranged above the filtering screen positioned at the top, and the overflow weir 540 is provided with a water outlet 560 extending out of the outer shell 100;

A centrifugal cavity is formed between the outer shell 100 and the cylinder, and a spiral guide plate 120 is arranged in the centrifugal cavity;

The lower end of the outer shell 100 is provided with a slag discharging port, and the slag discharging port is provided with a slag discharging valve 400, of course, a slag discharging box can be arranged at the slag discharging port, the slag discharging valve 400 can be arranged on the slag discharging box, and the slag discharging valve 400 can be a pneumatic, electric or other slag discharging valve 400, so that the prior art is adopted;

a back-flushing spray head 300 is installed on the end cover 200, and is used for back flushing the multi-stage filter screen.

In the embodiment, the sewage treatment device has the core that the energy loss is reduced, the energy utilization efficiency is improved, and the sewage treatment task is ensured to be efficiently and energy-effectively completed by utilizing a mode of combining physical filtration, centrifugal separation and back flushing cleaning. In addition, the sewage treatment device adopts an integrated design, so that the whole volume of the equipment is reduced, and the space is saved.

The working principle of the sewage treatment device of the utility model is as follows:

With respect to multi-stage physical filtration, the contaminated water enters the apparatus through a water inlet 110 provided in the outer housing 100 below the top annular mounting plate and first enters the filter unit 500 in the cartridge. As the filter screen with more than two stages of gradually changed filter grades from low to high is arranged in the cylinder body from bottom to top. Along with the upward flow of water flow, the particulate matters are gradually intercepted by the filter screens of different grades, so that the pollutants with different particle diameters can be effectively removed, and the overall filtering effect is improved. The top is provided with an overflow weir 540, and the finest filtered clean water is discharged through a water outlet 560 on the overflow weir 540.

In the centrifugal separation filtration, a spiral baffle 120 is provided in a centrifugal chamber formed between the outer casing 100 and the cylindrical body. When the water containing impurities passes through this area, the large particle impurities are subjected to centrifugal force so that the heavier particulate matters move downward along the outer wall and finally settle to the bottom slag discharge port, which is equipped with a slag discharge valve 400 for controlling the discharge process, to be discharged.

Regarding backwash cleaning, backwash spray head 300 is mounted on end cap 200 for automatic flushing to prevent filter screen clogging from affecting efficiency. When back flushing is needed, high-pressure clean water can be injected into the filtering unit 500 through the spray head to back flush the multi-stage filter screen, so that pollutants on the multi-stage filter screen are removed, the flushing pressure is reduced by the multi-stage back flushing, the back flushing efficiency is improved, and the sewage treatment effect is facilitated.

Example two

Based on the above embodiments, the spiral baffle 120 is disposed at least in two ways, one is disposed on the inner side wall of the outer casing 100, and the other is disposed on the outer side wall of the cylinder. Of course, the spiral guide plate 120 may be detachably installed, so as to facilitate replacement and maintenance.

Example III

On the basis of the above embodiment, in order to ensure the centrifugal separation effect, the water inlet 110 is disposed at the tangential inlet of the upper end of the spiral baffle 120.

Example IV

On the basis of the above embodiment, in order to ensure the multi-stage filtering effect, at least 3-5 filter screens are sequentially disposed in the cylinder from top to bottom, and in this embodiment, a first filter screen 530, a second filter screen 520, and a third filter screen 510 are disposed.

Example five

On the basis of the above embodiment, in order to improve the tightness of the top of the centrifugal cavity, the filtered clean water is prevented from flowing back to the centrifugal cavity, and the sewage is prevented from entering the overflow weir 540 to pollute the clean water, the top of the outer side wall of the cylinder is provided with a sealing ring plate 550 matched and sealed with the annular mounting plate, the sealing ring plate 550 is provided with a flange plate used for sealing connection, and sealing components such as a sealing gasket or a sealing ring can be additionally arranged during mounting, so that the sealing effect is further ensured.

Example six

On the basis of the above embodiment, the specific structure of the overflow weir 540 may be simplified by including an overflow plate disposed inside the closed ring plate 550, where the overflow plate is provided with overflow ports, and a plurality of overflow ports may be disposed.

Example seven

On the basis of the above embodiment, in order to secure the treatment efficiency, to prevent the water inflow efficiency from being affected by the excessive hydraulic pressure in the centrifugal chamber, the height of the overflow weir 540 is set to be lower than that of the water inlet 110.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The sewage treatment device comprises an outer shell, wherein an end cover is arranged at the top end of the outer shell, and the sewage treatment device is characterized in that:

The outer shell is a conical cylinder;

an annular mounting plate is arranged at the top in the outer shell, and a water inlet is arranged below the annular mounting plate;

The outer shell is sleeved with a filtering unit fixed on the annular mounting plate;

the filtering unit comprises a barrel, more than two stages of filtering screens with filtering grades gradually changed from low to high are sequentially arranged in the barrel from bottom to top, an overflow weir is arranged above the filtering screen positioned at the top, and a water outlet extending out of the outer shell is arranged on the overflow weir;

A centrifugal cavity is formed between the outer shell and the cylinder body, and a spiral guide plate is arranged in the centrifugal cavity;

The lower end of the outer shell is provided with a slag discharge port, and the slag discharge port is provided with a slag discharge valve;

And the end cover is provided with a back flushing spray head.

2. The wastewater treatment device of claim 1, wherein the spiral deflector is disposed on an inner side wall of the outer housing or an outer side wall of the cylinder.

3. The wastewater treatment device of claim 1, wherein the water inlet is arranged at a tangential inlet of the upper end of the spiral deflector.

4. The sewage treatment device according to claim 1, wherein at least a first filter screen, a second filter screen and a third filter screen are sequentially arranged in the cylinder from top to bottom.

5. The sewage treatment device according to claim 1, wherein a sealing ring plate matched and sealed with the annular mounting plate is arranged at the top of the outer side wall of the cylinder body, and a flange plate used for sealing connection is arranged on the sealing ring plate.

6. The sewage treatment apparatus according to claim 5, wherein the overflow weir comprises an overflow plate arranged on the inner side of the closed ring plate, and an overflow port is formed in the overflow plate.

7. A sewage treatment apparatus according to any one of claims 1 to 6, wherein the overflow weir is lower than the water inlet.