Air dissolving system of dissolved air flotation machine

Abstract

The utility model relates to an air dissolving system of an air dissolving flotation machine, which belongs to the technical field of air dissolving flotation machines, and comprises two air dissolving devices, namely a first air dissolving device and a second air dissolving device, the first air dissolving device is connected with the second air dissolving device through a second water passing pipe, the first air dissolving device is connected with a first water passing pipe, and the second air dissolving device is connected with a second water passing pipe. The first water passing pipe is connected with a pressure pump, the pressure pump is connected with a water inlet pipe, the second air dissolving device is connected with a third water passing pipe, the third water passing pipe is connected with a micro-nano releaser, and the micro-nano releaser is connected with a micro-nano air water inlet pipe. The air flotation device has the advantages that the effect of removing emulsified oil of a grease surfactant is obvious, and meanwhile, for different air flotation requirements and operation conditions, the most suitable dissolved air quantity selection can be realized, and different operation conditions are met.

Description

Technical Field

[0001] The utility model relates to an air dissolving system of a dissolved air flotation machine, belonging to the technical field of dissolved air flotation machines. Background Art

[0002] Dissolved air flotation is a water treatment device that generates a large number of fine bubbles in the water by a dissolved air system, so that the air is attached to the suspended particles in the form of highly dispersed tiny bubbles, resulting in a state where the density is less than that of water. The buoyancy principle is used to make it float on the water surface, thereby achieving solid-liquid separation. It is currently used in water supply, industrial wastewater and urban sewage treatment. However, the volume of bubbles generated by the current dissolved air system is still very large, and the removal effect of grease surfactant emulsified oil is not good. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a dissolved air flotation machine dissolved air system in view of the above shortcomings, combined with a micro-nano dissolved air releaser to form a new full-pressure flotation pretreatment system, the released bubbles are tiny, and the removal effect of grease surfactant emulsified oil is remarkable. At the same time, for different flotation requirements and operating conditions, the most suitable dissolved air amount can be selected to meet different operating conditions.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a dissolved air flotation machine dissolved air system, including two dissolved air devices, the two dissolved air devices are respectively a first dissolved air device and a second dissolved air device, the first dissolved air device and the second dissolved air device are connected through a second water pipe, the first dissolved air device is connected to a first water pipe, the first water pipe is connected to a pressure pump, the pressure pump is connected to a water inlet pipe, the second dissolved air device is connected to a third water pipe, the third water pipe is connected to a micro-nano releaser, and the micro-nano releaser is connected to a micro-nano air-water inlet pipe.

[0005] As a further improvement of the above technical solution:

[0006] The micro-nano air-water inlet pipe is connected to a dissolved air flotation machine.

[0007] The first gas dissolving device and the second gas dissolving device have the same structure, and both the first gas dissolving device and the second gas dissolving device are provided with ejectors.

[0008] A dissolved air flotation machine dissolved air system also includes an air compressor, the air compressor is connected to a pressure reducing valve, and the pressure reducing valve is connected to a gas flow meter.

[0009] The gas flow meter is connected to the first gas dissolving device and the second gas dissolving device respectively.

[0010] The first gas dissolving device is provided with a second exhaust valve.

[0011] The second gas dissolving device is provided with a first exhaust valve.

[0012] The utility model adopts the above technical scheme and has the following advantages: the utility model adopts unique hydraulic cavitation technology, combined with a micro-nano dissolved air releaser, to form a new full-pressure flotation pretreatment system, which releases tiny bubbles and has a significant effect on the removal of grease surfactant emulsified oil. At the same time, for different flotation requirements and operating conditions, the most suitable dissolved air volume can be selected to meet different operating conditions.

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a dissolved air system of a dissolved air flotation machine in an embodiment of the utility model.

[0015] In the figure,

[0016] 1-water inlet pipe, 2-boosting pump, 3-first water pipe, 4-first gas dissolving device, 5-second water pipe, 6-second gas dissolving device, 7-third water pipe, 8-micro-nano releaser, 9-micro-nano gas-water inlet pipe, 10-air compressor, 11-pressure reducing valve, 12-gas flow meter, 13-first exhaust valve, 14-second exhaust valve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. Example

[0020] like Figure 1 As shown, an air dissolving system of an air flotation machine includes two air dissolving devices, the two air dissolving devices are respectively a first air dissolving device 4 and a second air dissolving device 6, the first air dissolving device 4 and the second air dissolving device 6 have the same structure, both the first air dissolving device 4 and the second air dissolving device 6 are provided with ejectors, the first air dissolving device 4 and the second air dissolving device 6 are connected through a second water pipe 5, the first air dissolving device 4 is connected to a first water pipe 3, the first water pipe 3 is connected to a pressure pump 2, the pressure pump 2 is connected to a water inlet pipe 1, the second air dissolving device 6 is connected to a third water pipe 7, the third water pipe 7 is connected to a micro-nano releaser 8, the micro-nano releaser 8 is connected to a micro-nano air-water inlet pipe 9, and the micro-nano air-water inlet pipe 9 is connected to the air dissolving flotation machine.

[0021] A dissolved air flotation machine air dissolving system also includes an air compressor 10, the air compressor 10 is connected to a pressure reducing valve 11, the pressure reducing valve 11 is connected to a gas flow meter 12, and the gas flow meter 12 is connected to a first dissolved air device 4 and a second dissolved air device 6 respectively.

[0022] The first gas dissolving device 4 is provided with a second exhaust valve 14 , and the second gas dissolving device 6 is provided with a first exhaust valve 13 .

[0023] During operation, water is pressurized by the pressure pump 2 and enters the first gas dissolving device 4 and the second gas dissolving device 6 respectively. The air compressor 10 fills the pressurized gas into the first gas dissolving device 4 and the second gas dissolving device 6 to form water with air pressure, which forms tiny bubbles after passing through the micro-nano releaser 8, and has a significant effect on removing emulsified oil of grease surfactants.

[0024] According to different flotation requirements and operating conditions, the most suitable dissolved air volume can be achieved by increasing or decreasing the number of dissolved air devices to meet different operating conditions.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dissolved air flotation system, characterized in that: The invention comprises two gas dissolving devices, the two gas dissolving devices are respectively a first gas dissolving device (4) and a second gas dissolving device (6), the first gas dissolving device (4) and the second gas dissolving device (6) are connected via a second water pipe (5), the first gas dissolving device (4) is connected to a first water pipe (3), the first water pipe (3) is connected to a pressure pump (2), the pressure pump (2) is connected to a water inlet pipe (1), the second gas dissolving device (6) is connected to a third water pipe (7), the third water pipe (7) is connected to a micro-nano releaser (8), and the micro-nano releaser (8) is connected to a micro-nano gas-water inlet pipe (9).

2. The dissolved air flotation system according to claim 1, characterized in that: The micro-nano air-water inlet pipe (9) is connected to a dissolved air flotation machine.

3. The dissolved air flotation system according to claim 2, characterized in that: The first gas dissolving device (4) and the second gas dissolving device (6) have the same structure, and both the first gas dissolving device (4) and the second gas dissolving device (6) are provided with ejectors.

4. A dissolved air flotation system according to claim 3, characterized in that: It also includes an air compressor (10), the air compressor (10) is connected to a pressure reducing valve (11), and the pressure reducing valve (11) is connected to a gas flow meter (12).

5. A dissolved air flotation system according to claim 4, characterized in that: The gas flow meter (12) is connected to the first gas dissolving device (4) and the second gas dissolving device (6) respectively.

6. A dissolved air flotation system according to claim 5, characterized in that: The first gas dissolving device (4) is provided with a second gas exhaust valve (14).

7. A dissolved air flotation system according to claim 6, characterized in that: The second gas dissolving device (6) is provided with a first exhaust valve (13).

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