Micro-bubble air dissolving device

Abstract

The utility model discloses a microbubble air dissolving device which comprises a tank body, a plurality of axially spaced partition plates are arranged in the tank body to form a plurality of independent mixing cavities, a water inlet is formed in the mixing cavity at the head end, and a water outlet is formed in the mixing cavity at the tail end; an internal mixing cylinder core is arranged in each mixing cavity, each internal mixing cylinder core comprises a cylinder body, a plurality of mixing holes penetrating through the inside and the outside of the cylinder body are distributed in the cylinder wall of the cylinder body, a joint pipeline is arranged at the end part of the cylinder body in the mixing cavity, and the cylinder body is in butt joint with the joint pipeline and is communicated with the next mixing cavity; an air inlet is formed in a mixing cylinder core in the head-end mixing cavity, and water and air are mixed in the head-end mixing cavity, are subjected to multi-stage segmentation in the rear mixing cavity through mixing holes and are discharged from a water outlet. Water and air are mixed in the internal mixing cylinder core at the head end, non-uniform air-dissolved water is subjected to subsequent multi-stage segmentation, large bubbles are segmented into fine bubbles by the slender mixing holes, and the small bubbles in the air-dissolved water are gradually uniform and stable, so that the air dissolving efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of pipeline mixing technology, and in particular to a microbubble dissolved gas device. Background Technology

[0002] Existing dissolved air flotation (DAF) devices are divided into two types: full dissolved air flotation (FAF) and partial dissolved air flotation (DAF). Full DAF has high dissolved air efficiency but low flocculant utilization efficiency. Partial DAF often uses jet dissolution in its dissolved air tanks, combined with a flocculant mixing tank. The flocculant utilization rate is higher than that of full DAF, but the dissolved air efficiency is relatively low, and the tank volume is larger for the same treatment capacity. Summary of the Invention

[0003] Purpose of the utility model: In order to overcome the shortcomings of the prior art, this utility model requests the disclosure of a microbubble dissolved gas device.

[0004] Technical solution: The microbubble dissolved gas device disclosed in this utility model includes a tank body, in which multiple axially spaced baffles are arranged to form multiple independent mixing chambers, and an inlet is provided at the first mixing chamber and an outlet is provided at the last mixing chamber.

[0005] Each mixing chamber is equipped with an internal mixing core, which includes a cylinder body. The cylinder body has multiple mixing holes that penetrate the inside and outside of the cylinder. A connector pipe is provided at the end of the cylinder body in the mixing chamber. The cylinder body is connected to the connector pipe and communicates with the next mixing chamber.

[0006] The mixing cylinder core inside the first mixing chamber is equipped with an air inlet. Water and air are mixed in the first mixing chamber and then divided into multiple stages through mixing holes in the rear mixing chamber before being discharged from the water outlet.

[0007] Furthermore, the tank body is horizontally positioned and extends axially; the baffles are arranged parallel and evenly spaced inside the tank.

[0008] Furthermore, the internal mixing cylinder core includes an axially penetrating cylinder, with a connecting plate at the front end of the cylinder, a flange hole in the tank, and the cylinder being radially inserted through the flange hole and sealed by a flange cover.

[0009] The partition plate has a through hole, the inner end of the cylinder is sealed and connected to the joint pipe, and is connected to the next mixing chamber through the through hole.

[0010] Furthermore, sealing gaskets are provided between the connecting plate and the flange hole and flange cover, and between the cylinder and the joint pipe.

[0011] Furthermore, the internal mixing cylinder adopts an intermittent insertion structure on the upper and lower sides of the tank body, with the first part inserted from top to bottom and the last part inserted from bottom to top;

[0012] The water inlet is located at the axial position of the first mixing chamber, the air inlet is located at the outer end of the first internal mixing core, and the water outlet is located at the outer end of the last internal mixing core; forming an S-shaped multi-stage mixing channel inside the tank.

[0013] Furthermore, the mixing hole has a slender hole structure, extending from the outside to the inside of the cylinder and inclined in the direction of medium flow.

[0014] Furthermore, pressure gauges are installed at both the inlet and outlet, and a pressure relief valve is provided at the mixing chamber at the front end of the tank.

[0015] Furthermore, the air inlet is equipped with a solenoid valve, a one-way valve, and an air pipe connector.

[0016] Beneficial effects: Compared with the prior art, the advantages of this utility model are as follows: water and gas are mixed in the internal mixing cylinder core at the first end. The uneven dissolved air water is divided into small bubbles by the slender mixing holes after subsequent multi-stage segmentation. The small bubbles in the dissolved air water gradually become uniform and stable, resulting in higher dissolved air efficiency. At the same time, when the medium passes through the small hole at high speed into the cylinder core, a negative pressure is generated inside the cylinder core, which facilitates the entry of air. The cartridge-type internal mixing cylinder core facilitates later maintenance and replacement. The pressure relief valve ensures that the pressure inside the tank does not exceed the design pressure, ensuring safe operation. Attached Figure Description

[0017] Figure 1 This is an overall appearance drawing of the present utility model;

[0018] Figure 2 This is an overall radial sectional view of the present invention. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 and 2 The microbubble dissolved air device shown includes a tank 1. Multiple axially spaced baffles 2 form multiple independent mixing chambers within the tank 1. An inlet 3 is located in the first mixing chamber, and an outlet 4 is located in the last mixing chamber. The tank is a sealed pressure vessel with a design pressure of 0.8 MPa. The outlet has back pressure to ensure the internal pressure is maintained at approximately 0.3-0.5 MPa.

[0021] The tank body 1 is horizontally positioned and extends axially; the partitions 2 are arranged parallel and evenly spaced inside the tank.

[0022] Each mixing chamber is provided with an internal mixing core 5, which includes a cylinder 501. The cylinder wall of the cylinder 501 is provided with a plurality of mixing holes 502 that penetrate the inside and outside of the cylinder. A connector pipe 201 is provided at the end of the cylinder 501 in the mixing chamber. The cylinder 501 is connected to the connector pipe 201 and communicates with the next mixing chamber.

[0023] The mixing core 5 inside the first mixing chamber is equipped with an air inlet 6. Water and air are mixed in the first mixing chamber and then divided into multiple stages through the mixing hole 502 in the rear mixing chamber before being discharged from the water outlet 4.

[0024] The internal mixing cylinder core 5 includes an axially penetrating cylinder 501. A connecting plate 503 is provided at the first end of the cylinder 501. The tank body 1 is provided with a flange hole 101. The cylinder 501 is radially inserted through the flange hole 101 and sealed and connected by a flange cover 102.

[0025] The partition 2 has a partition through hole 202, the inner end of the cylinder 501 is sealed and connected to the joint pipe 201, and is connected to the next mixing chamber through the partition through hole 202.

[0026] Sealing gaskets are provided between the connecting plate 503 and the flange hole 101 and the flange cover 102, and between the cylinder 501 and the joint pipe 201, to facilitate the disassembly of the internal mixing cylinder core 5 and ensure sealing.

[0027] The internal mixing cylinder core 5 adopts an intermittent insertion structure on the upper and lower sides of the tank body 1, with the first part inserted from top to bottom and the last part inserted from bottom to top.

[0028] The water inlet 3 is located axially in the first mixing chamber, the air inlet 6 is located at the outer end of the first internal mixing core 5, and the water outlet 4 is located at the outer end of the last internal mixing core 5; an S-shaped multi-stage mixing channel is formed inside the tank 1, such as... Figure 2 As shown.

[0029] The mixing hole 502 has a slender hole structure, which is inclined from the outside to the inside of the cylinder in the direction of medium flow.

[0030] Pressure gauges 7 are installed at both the inlet 3 and outlet 4. A pressure relief valve 8 is installed at the mixing chamber at the first end of the tank body 1. A solenoid valve, a one-way valve and an air pipe connector are installed at the air inlet 6 to prevent the dissolved air water in the tank from flowing back.

Claims

1. A microbubble dissolved gas device, characterized in that: Includes a tank (1), in which multiple axially spaced baffles (2) are provided to form multiple independent mixing chambers, and an inlet (3) is provided in the first mixing chamber and an outlet (4) is provided in the last mixing chamber. Each mixing chamber is provided with an internal mixing core (5), the internal mixing core (5) includes a cylinder (501), the cylinder wall of the cylinder (501) is provided with a plurality of mixing holes (502) penetrating inside and outside the cylinder, and a connector pipe (201) is provided at the end of the cylinder (501) in the mixing chamber, the cylinder (501) is connected to the connector pipe (201) and connected to the next mixing chamber; The mixing core (5) inside the first mixing chamber is provided with an air inlet (6). Water and air are mixed in the first mixing chamber and then divided in multiple stages through the mixing hole (502) in the rear mixing chamber before being discharged from the water outlet (4).

2. The microbubble dissolved gas device according to claim 1, characterized in that: The tank (1) is horizontally positioned and extends axially; the partitions (2) are evenly spaced parallel inside the tank.

3. The microbubble dissolved gas device according to claim 1, characterized in that: The internal mixing cylinder (5) includes an axially penetrating cylinder (501), with a connecting plate (503) at the head end of the cylinder (501), and a flange hole (101) provided in the tank (1). The cylinder (501) is radially inserted through the flange hole (101) and sealed by a flange cover (102). The partition (2) has a partition through hole (202), the inner end of the cylinder (501) is sealed and connected to the joint pipe (201), and is connected to the next mixing chamber through the partition through hole (202).

4. The microbubble dissolved gas device according to claim 3, characterized in that: Sealing gaskets are provided between the connecting plate (503) and the flange hole (101) and the flange cover (102), and between the cylinder (501) and the joint pipe (201).

5. The microbubble dissolved gas device according to claim 3, characterized in that: The internal mixing cylinder core (5) adopts an intermittent insertion structure on the upper and lower sides of the tank body (1), with the first part inserted from top to bottom and the last part inserted from bottom to top; The water inlet (3) is located at the axial position of the first mixing chamber, the air inlet (6) is located at the outer end of the first internal mixing cylinder (5), and the water outlet (4) is located at the outer end of the last internal mixing cylinder (5); an S-shaped multi-stage mixing channel is formed in the tank (1).

6. The microbubble dissolved gas device according to claim 1, characterized in that: The mixing hole (502) has a slender hole structure, which is inclined from the outside to the inside of the cylinder in the direction of medium flow.

7. The microbubble dissolved gas device according to claim 1, characterized in that: Pressure gauges (7) are installed at both the inlet (3) and outlet (4). A pressure relief valve (8) is installed at the mixing chamber at the head end of the tank (1).

8. The microbubble dissolved gas device according to claim 1, characterized in that: The air inlet (6) is equipped with a solenoid valve, a one-way valve and an air pipe connector.

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