CN211946576U

CN211946576U - Novel partial reflux dissolved air flotation device

Info

Publication number: CN211946576U
Application number: CN202020244913.9U
Authority: CN
Inventors: 乔劲松
Original assignee: Hongyun Honghe Tobacco Group Co Ltd
Current assignee: Hongyun Honghe Tobacco Group Co Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-11-17
Anticipated expiration: 2030-03-03

Abstract

The utility model discloses a novel partial reflux dissolved air flotation device, which comprises an air flotation reaction box (1), a dissolved air tank (2) and a dissolved air release pipe (3), wherein the dissolved air release pipe (3) is arranged at the bottom inside the air flotation reaction box (1), the liquid outlet of the dissolved air tank (2) is connected with the dissolved air release pipe (3), and the device also comprises a return water filter box (4), the air flotation reaction box (1) is connected with the return water filter box (4) through a first connecting pipe (5), and the return water filter box (4) is connected with the liquid inlet of the dissolved air tank (2) through a second connecting pipe (6); the top surface of the backwater filter tank (4) is higher than the top surface of the air flotation reaction tank (1). The utility model discloses can effectively solve the undulant problem that leads to the pipeline jam greatly easily of raw water quality of water.

Description

Novel partial reflux dissolved air flotation device

Technical Field

The utility model relates to a water treatment facilities, concretely relates to novel partial reflux dissolved air flotation device.

Background

After the sewage passes through the dissolved air flotation device, the indexes of pollutants such as grease, suspended matters, COD and the like in the sewage can be effectively reduced. The dissolved air flotation process is subdivided according to the basic flow of producing dissolved air water, and can be divided into three types: 1. full flow air-dissolving air-floating method; 2. partially dissolved air flotation; 3. partially refluxing the dissolved air floatation process.

In the prior art, a partial reflux dissolved air floatation process is commonly used. The existing partial reflux dissolved air floatation method has the following problems: under the normal operating mode of sewage quality, current partial backward flow dissolved air flotation technology can the steady operation, but when raw water quality of water is undulant, especially the water suspended solid content risees, partial backward flow dissolved air flotation technology's stability will be destroyed, and the most common condition is that Y type filter jam before the backward flow motor and the filler in dissolving the gas pitcher is blockked up by a large amount of impurity, leads to the air supporting device to be forced to shut down and overhaul. When the quality of the inflow water of the raw water is deteriorated, the effective operation rate of the partial reflux dissolved air floatation process equipment is greatly reduced, the filter or the dissolved air tank is required to be continuously disassembled for long-term use for cleaning, and even the condition that a reflux pump motor is burnt out sometimes occurs, so that the maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel partial reflux dissolved air supporting device to solve the technical problem among the prior art, it can effectively solve the undulant problem that leads to the pipeline to block up greatly easily of raw water quality of water.

The utility model provides a novel partial reflux dissolved air flotation device, which comprises an air flotation reaction box, a dissolved air tank and a dissolved air release pipe, wherein the dissolved air release pipe is arranged at the bottom in the air flotation reaction box; the top surface of the backwater filter tank is higher than the top surface of the air flotation reaction tank.

In the aforementioned novel partial reflux gas-dissolving and air-floating device, preferably, a partition plate is disposed in the air-floating reaction box, the partition plate divides a lower portion in the air-floating reaction box into a first region and a second region, a space of the first region is larger than a space of the second region, the gas-dissolving release pipe is disposed in the first region, and the first connection pipe is communicated with the second region.

In the novel partial reflux dissolved air flotation device, preferably, the height of the partition plate is lower than that of the air flotation reaction tank.

In the novel partial reflux gas-dissolving air flotation device, preferably, one end of the first connecting pipe extends into the second area, and the height of the end is one third of the height of the air flotation reaction tank.

Among the aforesaid novel partial backward flow solution gas floatation device, preferably, the return water rose box includes box, apron and filter plate, be equipped with return water import and drainage export on the box, the filter plate sets up the return water import with between the drainage export, the apron is articulated to be installed the top of box.

In the aforementioned novel partial backflow gas-dissolving air-floating device, preferably, the filter plate is provided with three, be equipped with three filter plate slot in the box, the filter plate passes through the filter plate slot is pegged graft along vertical direction in the box.

In the novel partial-reflux gas-dissolved air flotation device, the filter plate is preferably composed of a metal frame and a filter screen, and a handle is arranged at the top of the metal frame.

In the novel partial reflux gas-dissolving air flotation device, preferably, the box body is further provided with a cleaning port.

In the novel partial reflux gas-dissolving air flotation device, preferably, a Y-shaped filter, a reflux pump and a valve are arranged on the second connecting pipe.

Compared with the prior art, the utility model is provided with the backwater filter box, the air floatation reaction box is connected with the backwater filter box through the first connecting pipe, and the backwater filter box is connected with the liquid inlet of the dissolved air tank through the second connecting pipe; the top surface of the backwater filter tank is higher than the top surface of the air flotation reaction tank. Through setting up the return water rose box, according to the principle of linker, the return water can filter in the return water rose box, even raw water quality of water is undulant big, the return water after the filtration can not be to pipeline and pump body jam, has effectively reduced equipment maintenance and maintenance cost. And can be applied to various water qualities.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a front view of a return water filter tank;

FIG. 3 is a top view of a return water filter tank;

fig. 4 is a schematic structural view of the filter plate.

Description of reference numerals: 1-an air flotation reaction tank, 2-a dissolved air tank, 3-a dissolved air release pipe, 4-a backwater filter tank, 5-a first connecting pipe, 6-a second connecting pipe, 7-a partition plate, 8-a first area, 9-a second area, 10-a tank body, 11-a cover plate, 12-a filter plate, 13-a backwater inlet, 14-a filtered water outlet, 15-a filter plate slot, 16-a metal frame body, 17-a filter screen, 18-a handle, 19-a cleaning port, 20-a Y-shaped filter, 21-a reflux pump, 22-a valve, 23-a sewage inlet pipe, 24-a water outlet pipe, 25-a medicine feeding pipe, 26-a slag scraping machine and 27-a slag collecting tank.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The embodiment of the utility model provides a: as shown in fig. 1, a novel partial reflux dissolved air flotation device comprises an air flotation reaction box 1, a dissolved air tank 2 and a dissolved air release pipe 3, wherein the dissolved air release pipe 3 is arranged at the bottom inside the air flotation reaction box 1, a liquid outlet of the dissolved air tank 2 is connected with the dissolved air release pipe 3 through a connecting pipeline, a sewage inlet pipe 23 and a water outlet pipe 24 are further arranged on the air flotation reaction box 1, and a chemical adding pipe 25 is further arranged on the sewage inlet 23; the air floatation reaction tank 1 is connected with the backwater filter tank 4 through a first connecting pipe 5, the backwater filter tank 4 is connected with a liquid inlet of the dissolved gas tank 2 through a second connecting pipe 6, and a Y-shaped filter 20, a reflux pump 21 and a valve 22 are arranged on the second connecting pipe 6; the top surface of the backwater filter tank 4 is higher than the top surface of the air flotation reaction tank 1.

During operation, after adding medicine to sewage through adding pencil 25, advance pipe 23 through sewage and get into in the air supporting reaction box 1, form separable flocculus in air supporting reaction box 1, some sewage in the raw water gets into return water rose box 4 through first connecting pipe 5 in, filter back through return water rose box 4 and pass through second connecting pipe 6, get into in the dissolved air jar 2 after drawing through backwash pump 21, dissolve in the air jar 2 and mix each other with the pneumatics gas, form the gas water that dissolves of certain pressure, container tank 2 is prior art, its inner structure is no longer repeated, dissolve in the gas water and release to air supporting reaction box 1 through installing dissolving gas release pipe 3 of bottom in air supporting reaction box 1 in, the micro bubble that forms after the release (bubble diameter scope 30um-50 um). These micro-bubbles adhere to flocs in the sewage to form an air-floating body having a specific gravity smaller than that of water. The air floating body rises to the water surface to form a floating slag layer, and is collected to a slag collecting groove 27 through a slag scraper 26.

Because the utility model discloses set up return water rose box 4, return water rose box 4 can effectively filter the silt etc. of aquatic, has effectively prevented Y type filter 20's jam, has prolonged maintenance cycle, has reduced the maintenance cost.

In a specific embodiment, a partition plate 7 is further arranged in the air flotation reaction tank 1, the partition plate 7 divides the lower part in the air flotation reaction tank 1 into a first area 8 and a second area 9, the space of the first area 8 is larger than that of the second area 9, the dissolved air release pipe 3 is arranged in the first area 8, and the first connecting pipe 5 is communicated with the second area 9.

The height of the partition plate 7 is lower than that of the air flotation reaction box 1, and preferably, the height of the partition plate 7 is lower than that of the total height of the air flotation reaction box 1. Through the arrangement of the partition plate 7, impurities formed by polymerization in the air floatation reaction process can be effectively prevented from entering the backflow water pipe.

Because the air supporting reaction box 1 is after operation for a period of time, the impurity of large granule can form the sedimentation layer in the bottom, if inhaled a large amount of impurity, just cause follow-up filtration equipment's jam easily, consequently though set up baffle 7, still have the chance of inhaling a large amount of impurity, and further, the one end of first connecting pipe 5 stretches into in the second region 9, and the height of this end is the third of air supporting reaction box 1 height. This makes it possible to suck in as little impurities as possible.

Further, the upper surface of the backwater filter tank 4 is preferably 5cm to 10cm higher than the top surface of the air flotation reaction tank 1, and the volume of the backwater filter tank is 1/15 to 1/20 of the volume of the air flotation reaction tank 1, as shown in fig. 2 and 3, the backwater filter tank specifically comprises a tank body 10, a cover plate 11 and a filter plate 12, the tank body 10 is provided with a backwater inlet 13 and a filtered water outlet 14, the filter plate 12 is arranged between the backwater inlet 13 and the filtered water outlet 14, and the cover plate 11 is hinged to the top of the tank body 10. Preferably, three filter plates 12 are provided, three filter plate slots 15 are provided in the tank 10, and the filter plates 12 are inserted into the tank 10 through the filter plate slots 15 in the vertical direction.

The sewage enters the tank body 10 through the backwater inlet 13, is filtered layer by layer in the tank body 10 through the filter plate 12, finally enters the second connecting pipe 6 through the filtered water outlet 14, and then sequentially flows through the Y-shaped filter 20, the reflux pump 21 and the valve 22. In order to ensure the cleanliness of the inside of the tank 10, it is necessary to periodically clean it, and therefore, a cleaning port 19 is provided, through which the contaminated water can be discharged.

As shown in fig. 4, the filter sheet 12 is composed of a metal frame 16 and a filter mesh 17, and a handle 18 is provided on the top of the metal frame 16.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims

1. The utility model provides a novel partial reflux dissolves gas air supporting device, includes air supporting reaction box (1), dissolves gas pitcher (2) and dissolves gas release pipe (3), dissolve gas release pipe (3) and locate bottom in air supporting reaction box (1), dissolve the liquid outlet of gas pitcher (2) with dissolve gas release pipe (3) and connect its characterized in that: the air floatation reaction tank (1) is connected with the return water filter tank (4) through a first connecting pipe (5), and the return water filter tank (4) is connected with a liquid inlet of the dissolved air tank (2) through a second connecting pipe (6); the top surface of the backwater filter tank (4) is higher than the top surface of the air flotation reaction tank (1).

2. The novel partial reflux dissolved air flotation device as set forth in claim 1, characterized in that: be equipped with baffle (7) in air supporting reaction box (1), baffle (7) will lower part in air supporting reaction box (1) is first region (8) and second region (9), the space of first region (8) is greater than the space of second region (9), dissolve gas release pipe (3) and locate in first region (8), first connecting pipe (5) with the regional (9) intercommunication of second.

3. The novel partial reflux dissolved air flotation device as set forth in claim 2, characterized in that: the height of the partition plate (7) is lower than that of the air flotation reaction box (1).

4. The novel partial reflux dissolved air flotation device as set forth in claim 2 or 3, characterized in that: one end of the first connecting pipe (5) extends into the second area (9), and the height of the end is one third of the height of the air flotation reaction box (1).

5. The novel partial reflux dissolved air flotation device as set forth in claim 1, characterized in that: the backwater filter tank (4) comprises a tank body (10), a cover plate (11) and a filter plate (12), a backwater inlet (13) and a filtered water outlet (14) are formed in the tank body (10), the filter plate (12) is arranged between the backwater inlet (13) and the filtered water outlet (14), and the cover plate (11) is hinged to the top of the tank body (10).

6. The novel partial reflux dissolved air flotation device as set forth in claim 5, characterized in that: the device is characterized in that the number of the filter plates (12) is three, three filter plate slots (15) are arranged in the box body (10), and the filter plates (12) are inserted in the box body (10) through the filter plate slots (15) along the vertical direction.

7. The novel partial reflux dissolved air flotation device as set forth in claim 5, characterized in that: the filter plate (12) is composed of a metal frame body (16) and a filter screen (17), and a handle (18) is arranged at the top of the metal frame body (16).

8. The novel partial reflux dissolved air flotation device as set forth in claim 5, characterized in that: the box body (10) is also provided with a cleaning opening (19).

9. The novel partial reflux dissolved air flotation device as set forth in claim 1, characterized in that: and the second connecting pipe (6) is provided with a Y-shaped filter (20), a reflux pump (21) and a valve (22).