Backwashing device of air floatation releaser

Abstract

The utility model discloses a backwashing device for an air floatation releaser, which is applied to the technical field of backwashing devices for air floatation releasers, and is characterized by comprising an air floatation tank and an air floatation pipeline, the air floatation tank comprises a clear water area and a sewage separation area, the air floatation pipeline comprises a dissolved air tank communicated with the clear water area, a releaser assembly communicated with the dissolved air tank is arranged in the sewage separation area, and a backwashing assembly is arranged between the dissolved air tank and the releaser assembly. The releaser assembly comprises a releaser panel and a releaser bottom plate which are arranged in parallel at an interval, a nozzle is formed in the releaser bottom plate, and a movable plunger used for sealing the nozzle is movably connected to the releaser panel; the flushing device has the technical effects of simple structure, stability in operation and high flushing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of backwashing devices for air flotation releasers, in particular to a backwashing device for air flotation releasers. Background Art

[0002] The flotation releaser is a key component of flotation. After the pressurized water in the container enters the flotation releaser, it collides and dissipates energy through the narrow gap inside to release a large number of dense small bubbles to achieve sewage treatment. Since the flotation releaser is prone to blockage during long-term use, thereby affecting the sewage treatment effect, it is necessary to clean the flotation releaser regularly to avoid blockage.

[0003] At present, a Chinese utility model with announcement number CN207294248U discloses a shallow flotation release device, including a release pipe and a releaser arranged on the release pipe, the releaser is a disc-type releaser, including a releaser body, a dissolved air water connecting pipe and a releaser pipe, the releaser body is fixed in the release pipe, a dissolved air water connecting pipe for introducing dissolved air water is provided on the top of the releaser body, the inner cavity of the releaser body is provided with a high-pressure air sealing device, a high-pressure air connecting pipe is provided at the center of the bottom of the releaser body, and a plurality of air sealing device support feet are evenly distributed on the upper surface of the high-pressure air sealing device of the releaser, and the air sealing device support feet are in close contact with the upper top surface of the inner cavity of the releaser body when the releaser is in the working state of releasing dissolved air water.

[0004] The existing utility model separates from the upper top surface of the inner cavity of the releaser body when the releaser is in the cleaning working state, increases the gap according to the pressure change of the high-pressure gas pipe input, and allows the blockage to be washed away by the pressurized dissolved water, thereby preventing the flotation releaser from being blocked. However, in the actual use of the flotation releaser, the place where congestion is most likely to occur is the releaser nozzle position. The existing flotation releasers on the market are currently unable to effectively clean the flotation releaser nozzle position, which causes the flotation releaser to be blocked and affects the sewage treatment effect, and needs to be improved. Utility Model Content

[0005] The utility model aims to provide a backwashing device for an air flotation releaser, which has the advantages of simple structure, stable operation and high flushing efficiency.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a flotation releaser backwashing device, including a flotation tank and a flotation pipeline; the flotation tank includes a clean water area and a sewage separation area, the flotation pipeline includes a dissolved air tank connected to the clean water area, the sewage separation area is provided with a releaser assembly connected to the dissolved air tank, a backwashing assembly is provided between the dissolved air tank and the releaser assembly, the releaser assembly includes a releaser panel and a releaser bottom plate arranged in parallel and at intervals, a nozzle is opened on the releaser bottom plate, and a movable plug for closing the nozzle is movably connected to the releaser panel.

[0007] The utility model is further configured as follows: the backwash component includes a first connecting pipe connecting the dissolved air tank and the releaser component and a water ejector connected to the first connecting pipe based on an electric reversing valve, and the suction chamber of the water ejector is connected to one end of the first connecting pipe close to the releaser component based on a second connecting pipe.

[0008] The utility model is further configured as follows: an electric switch valve is provided on the second connecting pipe. When the releaser assembly works normally, the electric reversing valve and the electric switch valve are closed, and pressurized dissolved air water enters the releaser assembly through the first connecting pipe to release dense small bubbles. When the releaser assembly is blocked, the electric reversing valve and the electric switch valve are opened, and pressurized dissolved air water is injected into the nozzle of the water ejector through the electric reversing valve. The suction chamber of the water ejector generates negative pressure to suck away the blockages between the nozzle and the releaser panel and the releaser bottom plate. At the same time, the negative pressure suction sucks the movable plug into the nozzle to push away the blockages in the nozzle.

[0009] The utility model is further configured as follows: a negative pressure sensor for measuring vacuum suction is externally connected to the second connecting pipe, and the water flow pressure acting on the nozzle of the water ejector by the air dissolving tank is regulated based on the reading of the negative pressure sensor.

[0010] The utility model is further configured as follows: a sliding hole for the movable plug to slide is opened on the releaser panel, and when the releaser assembly works normally, the pressurized dissolved gas water lifts up the movable plug, and the bottom of the movable plug is flush with the bottom of the sliding hole.

[0011] The utility model is further configured such that: the gravity of the movable plug is smaller than the water flow pressure of the pressurized dissolved air water output by the dissolved air tank and sprayed from the nozzle.

[0012] The utility model is further configured as follows: the air dissolving tank is connected to the clean water area based on a water pump.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. A backwash assembly is arranged between the air dissolving tank and the releaser assembly, and an active plug for closing the nozzle is arranged on the releaser panel. When the releaser assembly is operating normally, the electric reversing valve and the electric switch valve are closed, and pressurized air-dissolving water enters the nozzle through the first connecting pipe. The pressurized air-dissolving water lifts up the active plug so that the pressurized air-dissolving water enters between the releaser panel and the releaser bottom plate, thereby releasing dense small bubbles normally. When the releaser assembly is blocked, the electric reversing valve and the electric switch valve are opened, and the pressurized air-dissolving water is injected into the nozzle of the water ejector through the electric reversing valve, and the suction chamber of the water ejector generates negative pressure to suck away the air from the nozzle and the releaser. The blockage between the releaser panel and the releaser bottom plate, when the nozzle is not completely blocked, the plug has a certain weight and will automatically fall down to block the nozzle. At the same time, the vacuum suction will also assist the movable plug to slide into the nozzle to push away the blockage in the nozzle. Then the electric reversing valve and the electric switch valve are closed, and the pressurized dissolved gas water enters the nozzle through the first connecting pipe and pushes up the movable plug. Then the electric reversing valve and the electric switch valve are opened continuously to make the movable plug slide into the nozzle to push away the blockage in the nozzle. After repeating several times, the blockage in the nozzle is completely cleared, and efficient cleaning is achieved in a short time. The structure is simple, the operation is stable, and the flushing efficiency is high;

[0015] 2. A negative pressure sensor for measuring vacuum pressure is provided on the second connecting pipe, and the water flow pressure acting on the nozzle of the water ejector by the air dissolving tank is regulated based on the reading of the negative pressure sensor, thereby adjusting the vacuum suction force and improving the flushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 is a schematic diagram of the structure of the releaser assembly of this embodiment in normal operating state;

[0018] Figure 3 Schematic diagram of the structure of the releaser assembly of this embodiment in the backwash state.

[0019] Figure numerals: 1. flotation tank; 11. clean water area; 12. sewage separation area; 2. flotation pipeline; 21. dissolved air tank; 22. releaser assembly; 221. releaser panel; 222. releaser bottom plate; 223. nozzle; 224. movable plug; 225. sliding hole; 23. backwashing assembly; 231. first connecting pipe; 232. electric reversing valve; 233. water ejector; 234. second connecting pipe; 235. electric switch valve; 236. negative pressure sensor; 24. water pump. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Example:

[0022] refer to Figures 1 to 3 A flotation releaser backwashing device comprises an air flotation tank 1 and an air flotation pipeline 2. The air flotation tank 1 comprises a clean water area 11 and a sewage separation area 12. The air flotation pipeline 2 comprises an air dissolving tank 21 connected to the clean water area 11. The air dissolving tank 21 and the clean water area 11 are connected based on a water pump 24 so that the clean water in the clean water area 11 is pumped into the air dissolving tank 21 to prepare pressurized air-dissolving water. A releaser assembly 22 connected to the air dissolving tank 21 is provided in the sewage separation area 12. The pressurized air-dissolving water enters the releaser assembly 22 so as to release dense small bubbles. A backwashing assembly 23 is provided between the air dissolving tank 21 and the releaser assembly 22 so as to achieve Now let's clean the releaser assembly 22. The releaser assembly 22 includes a releaser panel 221 and a releaser bottom plate 222 that are arranged in parallel and at intervals. A nozzle 223 is opened on the releaser bottom plate 222. A movable plug 224 for closing the nozzle 223 is movably connected to the releaser panel 221. The movable plug 224 is made of metal. When no pressurized dissolved air water enters the nozzle 223, the movable plug 224 will fall and block the nozzle 223 because the density of the movable plug 224 is greater than that of water and it has a certain weight. When the pressurized dissolved air water directly enters the nozzle 223, it will push open the movable plug 224 to release dense small bubbles.

[0023] refer to Figure 1 Specifically, the backwashing assembly 23 includes a first connecting pipe 231 connecting the dissolved gas tank 21 and the releaser assembly 22, and a water ejector 233 connected to the first connecting pipe 231 based on an electric reversing valve 232. The suction chamber of the water ejector 233 is connected to one end of the first connecting pipe 231 close to the releaser assembly 22 based on a second connecting pipe 234. An electric switch valve 235 is provided on the second connecting pipe 234. When the releaser assembly 22 works normally, the electric reversing valve 232 and the electric switch valve 235 are closed, and the pressurized dissolved gas water is passed through the water ejector 233. The air enters the releaser assembly 22 through the first connecting pipe 231 to release dense small bubbles. When the releaser assembly 22 is blocked, the electric reversing valve 232 and the electric switch valve 235 are opened, and the pressurized dissolved air water is injected into the nozzle of the water ejector 233 through the electric reversing valve 232. The suction chamber of the water ejector 233 generates negative pressure to suck away the blockages in the nozzle 223 and between the releaser panel 221 and the releaser bottom plate 222. At the same time, the negative pressure suction sucks the movable plug 224 into the nozzle 223 to push away the blockages in the nozzle 223.

[0024] refer to Figure 1Specifically, the second connecting pipe 234 is externally connected with a negative pressure sensor 236 for measuring vacuum suction. Based on the reading of the negative pressure sensor 236, the water flow pressure of the dissolved gas tank 21 acting on the nozzle of the water ejector 233 is regulated to improve the flushing effect. A sliding hole 225 for the movable plug 224 to slide is provided on the releaser panel 221. When the releaser assembly 22 works normally, the pressurized dissolved gas water lifts up the movable plug 224, and the bottom of the movable plug 224 is flush with the bottom of the sliding hole 225, thereby avoiding interference caused by the generation of bubbles. In this embodiment, the gravity of the movable plug 224 is less than the water flow pressure of the pressurized dissolved gas water output by the dissolved gas tank 21 and ejected from the nozzle 223.

[0025] Brief description of the use process: When the releaser assembly 22 is working normally, the electric reversing valve 232 and the electric switch valve 235 are closed, and the pressurized dissolved air water enters the nozzle 223 through the first connecting pipe 231, and the pressurized dissolved air water pushes up the movable plug 224 so that the pressurized dissolved air water enters between the releaser panel 221 and the releaser bottom plate 222, thereby releasing dense small bubbles normally. When the releaser assembly 22 is blocked, the electric reversing valve 232 and the electric switch valve 235 are opened, and the pressurized dissolved air water is injected into the nozzle of the water ejector 233 through the electric reversing valve 232, and the suction chamber of the water ejector 233 generates negative pressure, thereby sucking away the nozzle 223 and the releaser panel 221 and the releaser bottom plate 2 22, when the nozzle 223 is not completely blocked, the movable plug 224 will automatically fall down to block the nozzle 223 due to its certain weight, and at the same time, the vacuum suction will also assist the movable plug 224 to slide into the nozzle 223 to push away the blockage in the nozzle 223, and then close the electric reversing valve 232 and the electric switch valve 235, and the pressurized dissolved gas water enters the nozzle 223 through the first connecting pipe 231 and pushes up the movable plug 224, and then continues to open the electric reversing valve 232 and the electric switch valve 235 so that the movable plug 224 slides into the nozzle 223 to push away the blockage in the nozzle 223, and after repeating several times, the blockage in the nozzle 223 can be completely cleared.

[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A flotation releaser backwashing device, comprising an air flotation tank (1) and an air flotation pipeline (2); characterized in that: The flotation tank (1) comprises a clean water area (11) and a sewage separation area (12); the flotation pipeline (2) comprises an air dissolving tank (21) connected to the clean water area (11); a releaser assembly (22) connected to the air dissolving tank (21) is arranged in the sewage separation area (12); a backwash assembly (23) is arranged between the air dissolving tank (21) and the releaser assembly (22); the releaser assembly (22) comprises a releaser panel (221) and a releaser bottom plate (222) arranged in parallel and spaced relation; a nozzle (223) is provided on the releaser bottom plate (222); and a movable plug (224) for closing the nozzle (223) is movably connected to the releaser panel (221).

2. The backwashing device of the air flotation releaser according to claim 1, characterized in that: The backwashing assembly (23) comprises a first connecting pipe (231) connecting the air dissolving tank (21) and the releaser assembly (22), and a water ejector (233) connected to the first connecting pipe (231) based on an electric reversing valve (232); a suction chamber of the water ejector (233) is connected to one end of the first connecting pipe (231) close to the releaser assembly (22) based on a second connecting pipe (234).

3. The backwashing device of the air flotation releaser according to claim 2 is characterized in that: The second connecting pipe (234) is provided with an electric switch valve (235). When the releaser assembly (22) works normally, the electric reversing valve (232) and the electric switch valve (235) are closed, and pressurized dissolved water enters the releaser assembly (22) through the first connecting pipe (231) to release dense small bubbles. When the releaser assembly (22) is blocked, the electric reversing valve (232) and the electric switch valve (235) are opened, and pressurized dissolved water is injected into the nozzle of the water ejector (233) through the electric reversing valve (232). The suction chamber of the water ejector (233) generates negative pressure to suck away the nozzle (223) and the blockage between the releaser panel (221) and the releaser bottom plate (222). At the same time, the negative pressure suction force sucks the movable plug (224) into the nozzle (223) to push away the blockage in the nozzle (223).

4. The backwashing device of the air flotation releaser according to claim 3 is characterized in that: The second connecting pipe (234) is externally connected to a negative pressure sensor (236) for measuring vacuum suction force.

5. The backwashing device of an air flotation releaser according to claim 1, characterized in that: The releaser panel (221) is provided with a sliding hole (225) for the movable plug (224) to slide. When the releaser assembly (22) is working normally, the pressurized dissolved gas water lifts up the movable plug (224), and the bottom of the movable plug (224) is flush with the bottom of the sliding hole (225).

6. The backwashing device of the air flotation releaser according to claim 1, characterized in that: The gravity of the movable plug (224) is smaller than the water flow pressure of the pressurized dissolved gas water outputted from the dissolved gas tank (21) and ejected from the nozzle (223).

7. The backwashing device of an air flotation releaser according to claim 1, characterized in that: The gas dissolving tank (21) is connected to the clean water area (11) via a water pump (24).

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