CN212076689U

CN212076689U - Novel dissolved air flotation device

Info

Publication number: CN212076689U
Application number: CN202020715243.4U
Authority: CN
Inventors: 刘刚; 李国辉; 张秀婷
Original assignee: Daqing Zhongke Qingxi Water Treatment Technology Service Co ltd
Current assignee: Daqing Zhongke Qingxi Water Treatment Technology Service Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-12-04
Anticipated expiration: 2030-04-30

Abstract

A novel dissolved air flotation device relates to a dissolved air device. The right side of the air flotation tank is provided with a clean water tank, the bottom of the air flotation tank is provided with a water collecting pipe communicated with the clean water tank, a dissolved air tank is connected with the clean water tank through a water supply pipeline, a dissolved air water pump is arranged on the water supply pipeline, a releaser is arranged in the air flotation tank and is connected with the dissolved air tank through a water discharge pipeline, an air compressor supplies air to the dissolved air tank through an air supply pipeline, the releaser is connected with the dissolved air tank through a flushing pipeline, the flushing pipeline is provided with a back flush ball valve, a residue scraping machine is fixed on the top of the air flotation tank, two conveying belts of the residue scraping machine are arranged into right-angled triangles, so that a space for placing a sludge filter box is reserved in the middle of the conveying belts, the scraping plate rotates around the right-angled triangles, the scraping plate is provided with a baffle and a side wing, the wing is, is more reasonable and convenient.

Description

Novel dissolved air flotation device

Technical Field

The utility model relates to a dissolve gas equipment, especially a novel dissolve gas air supporting device.

Background

The dissolved air floatation equipment is a common device for sewage treatment, forms flocs by adding a treatment agent into sewage, floats to the water surface in the floatation tank, is cleaned to a sludge tank by a residue scraper, and clear water at the bottom can be directly stored in a clear water tank through a water collecting pipe. But present dissolved air flotation equipment can scrape the floc water into the sludge groove together when clearing up the floc in sewage treatment process, reduces the clear water yield in the flotation tank to follow-up still need filter once more, lead to the process to increase, reduce the treatment effeciency. Therefore, it is necessary to optimize the dissolved air floatation device to solve the above problems and make it more suitable for sewage treatment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel dissolved air flotation device, it optimizes scraping sediment machine structure, and the scraper blade encircles along right angled triangle and rotates can mix the floc and hold and pour the mud rose box in, makes in the hourglass gets back to the air supporting pond down, more reasonable convenience.

In order to achieve the above purpose, the utility model adopts the following technical proposal: a novel dissolved air flotation device comprises an air flotation tank, a dissolved air water pump, a dissolved air tank, a releaser, an air compressor and a residue scraping machine, wherein a clear water tank is integrally arranged on the right side of the air flotation tank, a water collecting pipe communicated with the clear water tank is arranged at the bottom of the air flotation tank, the dissolved air tank is connected with the clear water tank through a water supply pipeline, the dissolved air water pump is installed on the water supply pipeline, the releaser is arranged in the air flotation tank, a water inlet of the releaser is connected with the dissolved air tank through a water drainage pipeline, the air compressor supplies air to the dissolved air tank through the air supply pipeline, a backwashing water port of the releaser is connected with the dissolved air tank through a flushing pipeline, the flushing pipeline is provided with a backwashing ball valve, the residue scraping machine is fixed at the top of the air flotation tank and comprises a sludge filter tank, two L-shaped supports, two conveyor belts, three, the three rotating shafts are respectively rotatably installed between the corners and the two end portions of the two L-shaped supports, two belt wheels are fixed on each rotating shaft at intervals, the belt wheels are located at the same side, one conveying belt is tightly wound between the belt wheels, a plurality of scraper blades are fixed between the two conveying belts along the winding direction of the two conveying belts, each scraper blade outer end is vertically provided with a baffle, side wings are arranged on two sides of the baffle, the side wings are located on one side of a scraper blade connecting end and contract towards the middle to leave pouring openings, the rotating shaft located above the side wings is driven by a driving motor, two angle iron cross beams are fixed between the two L-shaped supports, and the sludge filter box is made into a groove shape by a metal mesh and.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses optimize the sediment machine structure of scraping, the conveyer belt adopts two and the appearance sets up to right triangle, make and leave the space of placing the sludge filtration case among them, and the scraper blade encircles along right triangle and rotates in addition, and the scraper blade is provided with baffle and flank, and the flank leaves the pouring opening, can mix the floc when the scraper blade removes and hold and pour into the sludge filtration incasement, in the sludge filtration case made the flute profile for the metal mesh and can make the hourglass get back to the air supporting pond down, the cooperation sets up the dosing tank that has stirring function, facilitate for sewage treatment.

Drawings

FIG. 1 is a schematic structural view of the novel dissolved air flotation device of the present invention;

fig. 2 is an axonometric view of the slag scraper of the utility model.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

The first embodiment is as follows: as shown in figures 1-2, the utility model discloses a novel dissolved air flotation device, which comprises an air flotation tank 1, a dissolved air water pump 3, a dissolved air tank 4, a releaser 6, an air compressor 7 and a slag scraping machine 11, wherein the right side of the air flotation tank 1 is integrally provided with a clear water tank 1-1, the bottom of the air flotation tank 1 is provided with a water collecting pipe 1-2 communicated with the clear water tank 1-1, the dissolved air tank 4 is connected with the clear water tank 1-1 through a water supply pipeline 2, the dissolved air water pump 3 is arranged on the water supply pipeline 2, the releaser 6 is arranged in the air flotation tank 1, the water inlet of the releaser 6 is connected with the dissolved air tank 4 through a water discharge pipeline 5, the air compressor 7 supplies air to the dissolved air tank 4 through an air supply pipeline 8, the back flush of the releaser 6 is connected with the dissolved air tank 4 through a flush pipeline 9, the flush pipeline 9 is provided with, the slag scraping machine 11 is fixed on the top of the air flotation tank 1, the slag scraping machine 11 comprises a sludge filter box 17, two L-shaped supports 12, two conveyor belts 14, three rotating shafts 13 and a plurality of scrapers 15, the two L-shaped supports 12 are fixed on the top of the inner side wall of the air flotation tank 1 in parallel, the three rotating shafts 13 are respectively rotatably installed between the corners and the two end portions of the two L-shaped supports 12, two belt wheels 13-1 are fixed on each rotating shaft 13 at intervals, one conveyor belt 14 is tightly encircled between the three belt wheels 13-1 positioned on the same side, a plurality of scrapers 15 are fixed between the two conveyor belts 14 along the encircling direction, a baffle 15-1 is vertically arranged at the outer end of each scraper 15, side wings 15-2 are arranged on the two sides of the baffle 15-1, the side wings 15-2 are positioned at the connecting end, the upper rotating shaft 13 is driven by a driving motor 16, two angle iron beams 12-1 are fixed between the two L-shaped supports 12, and the sludge filter box 17 is made of metal mesh into a groove shape and is placed on the two angle iron beams 12-1.

The second embodiment is as follows: as shown in fig. 1, in the present embodiment, a chemical feeding box 10 is fixed to the left side of the air flotation tank 1, a chemical feeding pipe 10-1 is provided at the bottom of the chemical feeding box 10 to communicate with the air flotation tank 1 and to be provided below the releaser 6, and a stirring motor 10-2 is attached to the chemical feeding box 10 to stir the interior by a stirring paddle.

The third concrete implementation mode: as shown in fig. 1, in the present embodiment, a pressure gauge 5-1 is installed on the drain line 5 to further explain the first embodiment or the second embodiment.

The fourth concrete implementation mode: as shown in fig. 1, this embodiment is a further description of the third embodiment, and the gas supply line 8 is provided with a check valve.

Referring to fig. 1, clean water in a clean water tank 1-1 is pressurized by a dissolved air water pump 3 and flows into a dissolved air tank 4 through a water supply pipeline 2, air and water are dissolved, separated and circulated in the dissolved air tank 4, water after full dissolved air is released into an air floatation tank 1 through a discharge pipeline 5 and a releaser 6, at the moment, a backwashing ball valve 9-1 is in a closed state, air in the dissolved air tank 4 is supplied by an air compressor 7 through a gas supply pipeline 8, a sewage treatment agent is added into a medicine adding tank 10, is stirred by a stirring motor 10-2 through a stirring paddle and flows into the air floatation tank 1 through a medicine feeding pipe 10-1 to react with sewage to form flocs, the flocs are fully mixed and contacted with the dissolved air water released by the releaser 6, the flocs fully absorb and adhere to micro bubbles, float to the water surface under the action of bubble buoyancy to form a scum layer, the scum is transferred by a scum scraper 11, the lower layer of clean water flows into, one part of the scum is used by the backflow gas-dissolving water, the other part of the residual clear water can be discharged to the outside, the scum is transferred by a scum scraper 11 to drive two conveyor belts 14 to carry a plurality of scrapers 15 to rotate by a driving motor 16, the outer end of each scraper 15 is vertically provided with a baffle 15-1, two sides of each baffle 15-1 are provided with side wings 15-2, the side wings 15-2 are positioned on one side of the connecting end of each scraper 15 and are contracted towards the middle, a pouring opening is reserved in the middle, when the scrapers 15 move upwards, flocs can be mixed and contained under the cooperation of the baffles 15-1 and the side wings 15-2, when the scrapers 15 are positioned at the highest points and begin to incline, the flocs are mixed and poured into a sludge filter box 17 through the pouring opening, the sludge filter box 17 is made into a groove shape by a metal mesh, the flocs are filtered, water leaks back into the floatation tank 1, when the releaser 6 is blocked, large bubbles are generated in the air floatation tank 1, the pressure of the pressure gauge 5-1 is increased, the backwashing ball valve 9-1 is opened at the moment, high-pressure air with the large bubbles rapidly enters the releaser 6, the generated high-speed airflow flushes out the blockages, the backwashing ball valve 9-1 is opened every time for 10-20 seconds and then is closed, the operations are repeated for 3-4 times, the blockages in the releaser 6 can be effectively removed, and the backwashing ball valve 9-1 is kept normally closed during normal operation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other forms of embodiment without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A novel dissolved air flotation device comprises an air flotation tank (1), a dissolved air water pump (3), a dissolved air tank (4), a releaser (6), an air compressor (7) and a slag scraping machine (11), wherein a clear water tank (1-1) is integrally arranged on the right side of the air flotation tank (1), a water collecting pipe (1-2) communicated with the clear water tank (1-1) is arranged at the bottom of the air flotation tank (1), the dissolved air tank (4) is connected with the clear water tank (1-1) through a water supply pipe (2), the dissolved air water pump (3) is arranged on the water supply pipe (2), the releaser (6) is arranged in the air flotation tank (1), a water inlet of the releaser (6) is connected with the dissolved air tank (4) through a water drainage pipe (5), the air compressor (7) supplies air to the dissolved air tank (4) through an air supply pipe (8), a water inlet of the releaser (6) is connected with the dissolved air tank (4) through a flushing pipe (9), the washing pipeline (9) is provided with a backwashing ball valve (9-1), and the slag scraper (11) is fixed at the top of the air floatation tank (1), and is characterized in that: the slag scraping machine (11) comprises a sludge filtering box (17), two L-shaped supports (12), two conveying belts (14), three rotating shafts (13) and a plurality of scrapers (15), the two L-shaped supports (12) are fixed on the top of the inner side wall of the air floatation tank (1) in parallel, the three rotating shafts (13) are respectively rotatably installed between the corners and the two end parts of the two L-shaped supports (12), two belt wheels (13-1) are fixed on each rotating shaft (13) at intervals, one conveying belt (14) is tightly encircled between the three belt wheels (13-1) positioned on the same side, the plurality of scrapers (15) are fixed between the two conveying belts (14) along the encircling direction, a baffle (15-1) is vertically arranged at the outer end of each scraper (15), side wings (15-2) are arranged on the two sides of the baffle (15-1), the side wings (15-2) are positioned at the connecting end of the scraper (15) and, the rotating shaft (13) positioned above is driven by a driving motor (16), two angle iron beams (12-1) are fixed between the two L-shaped supports (12), and the sludge filter box (17) is made of metal mesh into a groove shape and is placed on the two angle iron beams (12-1).

2. The novel dissolved air flotation device according to claim 1, characterized in that: a dosing box (10) is fixed on the left side of the air flotation tank (1), a dosing pipe (10-1) communicated with the air flotation tank (1) and arranged below the releaser (6) correspondingly is arranged at the bottom of the dosing box (10), and a stirring motor (10-2) is installed on the dosing box (10) to stir the inside through a stirring paddle.

3. The novel dissolved air flotation device according to claim 1 or 2, characterized in that: the drainage pipeline (5) is provided with a pressure gauge (5-1).

4. The novel dissolved air flotation device according to claim 3, characterized in that: the gas supply line (8) is provided with a one-way valve.