Gas-liquid separation device of spiral-flow type air floatation tank

Abstract

The invention relates to the technical field of gas-liquid separation, and discloses a spiral-flow type gas-liquid separation device with an air floatation tank, which comprises an air floatation tank mechanism for air floatation treatment, the outer side of the air floatation tank mechanism is connected with a primary spiral-flow separation mechanism for primarily separating gas and liquid, and the primary spiral-flow separation mechanism is connected with a secondary spiral-flow separation mechanism for primarily separating gas and liquid. The other side of the first-stage cyclone separation mechanism is connected with a second-stage cyclone recovery mechanism for separating gas and liquid again; the air floatation tank mechanism comprises a tank body, a partition plate is fixedly installed in the tank body and divides the interior of the tank body into a collecting cavity and an air floatation cavity, a bubble plate is installed in the air floatation cavity, and an air inlet and a liquid inlet are formed in the side wall of the tank body. According to the air floatation device, the air floatation tank mechanism, the first-stage cyclone separation mechanism and the second-stage cyclone recovery mechanism are matched with one another, so that gas and liquid are separated, meanwhile, separated waste liquid and gas are independently recovered, the separated gas can be recycled, the air floatation device has extremely high applicability, and the economical efficiency of the air floatation device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas-liquid separation, in particular to a cyclone type air flotation tank gas-liquid separation device. Background Art

[0002] The flotation tank is a device that uses a large number of microbubbles with a diameter of 10 to 120 μm to release from the oil-water suspension. With the help of surface tension, the tiny oil droplets dispersed in the wastewater adhere to the microbubbles, increasing the buoyancy of the bubbles and floating them up, thus achieving effective separation of oil and water. Some flotation oil removal technologies can remove suspended matter and some organic pollutants in wastewater while removing oil. However, during the flotation process, suspended matter, grease and other substances may be deposited inside the equipment, causing pipes and equipment to be blocked, affecting the generation and distribution of bubbles, and thus reducing the treatment efficiency. Therefore, the flotation tank needs to be cleaned and unblocked regularly to ensure that the bubbles in the flotation process can be evenly distributed and improve the removal effect of suspended matter.

[0003] In order to quickly and effectively clean the flotation device, technicians have proposed some solutions. Solution 1, such as a sludge dehydration combined with flotation treatment device and treatment process disclosed in Chinese patent announcement number CN108503058A, first puts the wastewater into a sludge concentration tank for sedimentation, the bottom layer is sludge, the upper layer is supernatant, the supernatant is discharged into the reservoir through a pipe, the reservoir is input into the treatment tank through the first drainage pipe and pump, a bubble generating device is provided at the bottom of the treatment tank, bubbles are continuously emitted from the bottom, and the sludge in the water is brought to the surface by the bubbles, forming a sludge layer on the surface of the treatment tank, and the sludge layer on the surface of the treatment tank is scraped into the device through the sludge discharge device, and the sludge and water are separated. However, the device uses gravity sedimentation for separation, which takes a long time to separate, and the gas used for flotation cannot be recycled and utilized. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a cyclone type flotation tank gas-liquid separation device, which solves the problems in the prior art that separation is usually performed by gravity sedimentation, the separation time is long, and the used gas cannot be recovered and utilized.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cyclone type flotation tank gas-liquid separation device, comprising an air flotation tank mechanism for flotation treatment, a primary cyclone separation mechanism for preliminary separation of gas and liquid connected to the outside of the air flotation tank mechanism, and a secondary cyclone recovery mechanism for further separation of gas and liquid connected to the other side of the primary cyclone separation mechanism;

[0006] The flotation tank mechanism includes a tank body, a partition plate is fixedly installed inside the tank body, the partition plate divides the inside of the tank body into a collection chamber and an air flotation chamber, a bubble plate is installed inside the air flotation chamber, an air inlet and a liquid inlet are opened on the side wall of the tank body, the outlet end of the air inlet is located at the lower part of the bubble plate, a three-way pipe is connected to the outside of the air inlet through a flange, a liquid outlet pipe is connected to the outside of the tank body, the inlet end of the liquid outlet pipe is located at the upper part of the bubble plate, and the other end of the liquid outlet pipe is connected to the primary cyclone separation mechanism.

[0007] Preferably, the flotation tank mechanism further includes a switch valve 1 and a swirl shunt pipe, the switch valve 1 is fixedly connected to the outlet end of the liquid outlet pipe, the swirl shunt pipe is fixedly connected to the outside of the switch valve 1, and a drain pipe is also installed at the bottom of the tank body.

[0008] Preferably, the primary cyclone separation mechanism comprises a parallel cyclone group, which is composed of a plurality of axial hydrocyclones, one side input port of the axial hydrocyclone is connected to the cyclone diversion pipe, the top output port of the axial hydrocyclone is connected to a primary cyclone overflow pipe, and the bottom output port of the axial hydrocyclone is connected to a primary cyclone underflow pipe.

[0009] Preferably, the inlet end of the shaft-entered hydrocyclone is set as a cyclone inlet, the cyclone inlet is connected to the cyclone diversion pipe through a flange, a spiral flow channel is installed at the upper end of the shaft-entered hydrocyclone through a flange, a cyclone overflow port is opened in the middle of the spiral flow channel, and the bottom outlet end of the shaft-entered hydrocyclone is set as a cyclone bottom flow port, and an inverted cone is connected to the middle of the cyclone bottom flow port through a flange.

[0010] Preferably, the secondary cyclone recovery mechanism includes a liquid inlet chamber, a secondary separation chamber and a liquid collecting chamber. An inclined flow channel is installed inside the secondary separation chamber. The two ends of the inclined flow channel are respectively connected to the liquid inlet chamber and the liquid collecting chamber. An inlet pipe one is installed on the top of the liquid inlet chamber, and the input end of the inlet pipe one is connected to the primary cyclone overflow pipe.

[0011] Preferably, a liquid collecting inclined plate is fixedly connected to the inside of the liquid collecting chamber, a secondary water outlet pipe is installed on one side of the liquid collecting inclined plate, the other end of the secondary water outlet pipe is fixedly connected to a switch valve three, and the other end of the switch valve three is fixedly connected to a pump end pipe.

[0012] Preferably, an air pump is fixedly connected to the outside of the liquid collecting chamber, an output end of the air pump is fixedly connected to an outlet pipe, and the other end of the outlet pipe is connected to the three-way pipe.

[0013] Preferably, the outer end of the first-stage cyclone underflow pipe is fixedly connected to a second switch valve, and the other end of the second switch valve is fixedly connected to the bottom of the pump end pipe.

[0014] Preferably, an exhaust pipe is connected to the top of the liquid collecting chamber, and the exhaust pipe passes through the side wall of the liquid inlet chamber and is fixedly connected to an inlet pipe 2, and the other end of the inlet pipe 2 is connected to the input end of the air pump.

[0015] Working principle: When the equipment is working, gas is injected through the air inlet. The gas disperses into small bubbles after passing through the bubble plate. The bubbles float up and absorb the suspended particles in the sewage inside the tank, causing the particles to float to the water surface. After the water level inside the air flotation chamber reaches the height of the partition plate, the scum enters the collection chamber and can be discharged through the drain pipe, thus achieving sewage separation. The sewage treated with suspended particles can flow to the cyclone diversion pipe through the outlet pipe, and enter the shaft-entered hydrocyclone through the cyclone diversion pipe. After the sewage enters the cyclone from the inlet position, it first contacts the spiral flow channel and flows downward through the spiral channel outside the spiral flow channel. When passing through the spiral flow channel, it is subjected to the centrifugal acceleration of the spiral channel, which can make the gas and liquid undergo preliminary separation. When the separated liquid flows downward, the gas carried by it will be lifted by the inverted cone surface. The effect is to speed up the separation, thereby improving the separation efficiency. At this time, the gas moves upward and is discharged from the overflow port of the cyclone, and the liquid is discharged from the bottom flow port of the cyclone. The discharged liquid is transported through the first-level cyclone bottom flow pipe and then transported to the pump end pipe through the switch valve 2. The gas discharged from the overflow port of the cyclone is transported to the inlet pipe 1 through the first-level cyclone overflow pipe, and is injected into the liquid inlet cavity through the inlet pipe 1. After the gas enters the liquid inlet cavity, the gas and the liquid carried by the gas flow downward along the inclined flow channel and finally enter the liquid collecting cavity. When passing through the inclined flow channel, the gas and liquid are further centrifuged through the channel of the inclined flow channel. The gas entering the liquid collecting cavity is discharged from the exhaust pipe and enters the air pump through the guidance of the inlet pipe 2. The gas is recovered by the air pump and injected from the air inlet again, thereby realizing the recycling of the gas. The liquid entering the liquid collecting chamber is gathered by the liquid collecting inclined plate, and finally enters the pump end pipe through the secondary outlet pipe, and is discharged together with the liquid after preliminary separation, thereby realizing gas-liquid separation and recovery of waste liquid and gas. The cyclone separation technology is used to achieve efficient separation of gas-liquid two-phase media, and the separated carbon dioxide gas is recycled to reduce the cost of gas-liquid separation.

[0016] The present invention provides a cyclone type air flotation tank gas-liquid separation device. It has the following beneficial effects:

[0017] 1. The present invention separates gas and liquid through the cooperation of the flotation tank mechanism, the primary cyclone separation mechanism and the secondary cyclone recovery mechanism, and recovers the separated waste liquid and gas separately. The separated gas can be recycled again, which has extremely high applicability and enhances the economy of the flotation device.

[0018] 2. The present invention connects multiple axial-entry hydrocyclones in parallel and uses them in series with an oblique flow channel cyclone separator. Under large-volume conditions, multiple-stage cyclones work in parallel and perform multi-stage cyclone separation on gas and liquid through spiral flow channels and oblique flow channels. Centrifugal force is used to achieve efficient separation of gas and liquid phases, and the equipment occupies a small space, further saving costs.

[0019] 3. The present invention injects carbon dioxide gas to attach to the suspended particles in the sewage, and the gas carries the particles to the water surface to achieve separation. It can be used to remove oil droplets and fine solid particles with a density close to or less than water, and has a wide range of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall plan view of the present invention;

[0021] Figure 2 It is a cross-sectional schematic diagram of the present invention as a whole;

[0022] Figure 3 Schematic diagram of the installation position of the three-way pipe in the present invention;

[0023] Figure 4 Schematic diagram of the installation position of the bubble plate in the present invention;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the tank body in the present invention;

[0025] Figure 6 It is a structural schematic diagram of the bubble plate in the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the cyclone diverter pipe in the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the three-way pipe in the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the primary cyclone separation mechanism in the present invention;

[0029] Fig.10 It is a cross-sectional schematic diagram of the axial-entry hydrocyclone of the present invention;

[0030] Fig.11 It is a structural schematic diagram of the first-level cyclone overflow pipe in the present invention;

[0031] Fig.12 It is a structural schematic diagram of the parallel cyclone group in the present invention;

[0032] Fig.13 It is a schematic diagram of the structure of the first-level cyclone underflow tube in the present invention;

[0033] Fig.14It is a schematic plan view of the secondary cyclone recovery mechanism of the present invention;

[0034] Fig.15 It is a cross-sectional schematic diagram of the secondary cyclone recovery mechanism in the present invention;

[0035] Fig.16 is a cross-sectional schematic diagram of the liquid collecting chamber in the present invention;

[0036] Fig.17 It is a structural schematic diagram of the oblique flow channel in the present invention.

[0037] Among them, 1. flotation tank mechanism; 101. tank body; 103. liquid inlet; 104. air inlet; 105. three-way pipe; 106. collection chamber; 107. discharge pipe; 108. flotation chamber; 109. partition plate; 110. bubble plate; 111. liquid outlet pipe; 112. switch valve 1; 113. cyclone diversion pipe; 2. primary cyclone separation mechanism; 201. parallel cyclone group; 202. shaft-entered hydrocyclone; 2021. cyclone inlet; 2022. cyclone overflow; 2023. cyclone Bottom flow outlet; 203, spiral flow channel; 204, inverted cone; 205, primary cyclone overflow pipe; 206, primary cyclone bottom flow pipe; 207, switch valve two; 3, secondary cyclone recovery mechanism; 301, inlet pipe one; 302, liquid inlet chamber; 303, secondary separation chamber; 304, inclined flow channel; 305, liquid collecting inclined plate; 306, liquid collecting chamber; 307, exhaust pipe; 308, secondary water outlet pipe; 309, switch valve three; 310, pump end pipe; 311, inlet pipe two; 312, air pump; 313, outlet pipe. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example:

[0040] Please see attached Figure 1 -Attached Figure 2The embodiment of the present invention provides a cyclone type flotation tank gas-liquid separation device, including an air flotation tank mechanism 1 for flotation treatment, through which the suspended particles carried in the sewage are separated and treated, the outer side of the air flotation tank mechanism 1 is connected with a primary cyclone separation mechanism 2 for preliminary separation of gas and liquid, the sewage treated by the air flotation tank mechanism 1 enters the first cyclone separation mechanism 2 for preliminary gas-liquid separation treatment, the other side of the first cyclone separation mechanism 2 is connected with a secondary cyclone recovery mechanism 3 for re-separation of gas and liquid, and the gas and liquid treated by the first cyclone separation mechanism 2 are separated again by the secondary cyclone recovery mechanism 3;

[0041] Please see attached Figure 3 -Attached Figure 8 The flotation tank mechanism 1 includes a tank body 101, and a partition plate 109 is fixedly installed inside the tank body 101. The partition plate 109 divides the inside of the tank body 101 into a collection chamber 106 and an air flotation chamber 108. When sewage treatment is performed, the sewage to be treated is first injected into the air flotation chamber 108. A bubble plate 110 is installed inside the air flotation chamber 108, and an air inlet 104 and a liquid inlet 103 are provided on the side wall of the tank body 101. The outlet end of the air inlet 104 is located at the lower part of the bubble plate 110. The outside of the air inlet 104 is connected to a tee pipe 105 through a flange, and the air source is connected through the tee pipe 105. When sewage is treated, the gas transported through the tee pipe 105 enters from the air inlet 104, and then passes through the bubble plate 110, and the large gas blocks are divided into fine small bubbles. When the small bubbles float up, the floating impurities carried in the sewage are adsorbed and transported upward to the water surface. When the liquid level inside the air flotation chamber 108 is higher than the partition plate 109, the surface impurities pass over the partition plate 109 and enter the collection chamber 106, thereby achieving preliminary treatment of the sewage.

[0042] Please see attached Figure 4 -Attached Figure 5 A liquid outlet pipe 111 is connected to the outside of the tank body 101, the inlet end of the liquid outlet pipe 111 is located on the upper part of the bubble plate 110, and the other end of the liquid outlet pipe 111 is connected to the primary cyclone separation mechanism 2. The treated sewage flows from the liquid outlet pipe 111 to the inside of the primary cyclone separation mechanism 2 for preliminary separation of gas and liquid.

[0043] The flotation tank mechanism 1 also includes a switch valve 112 and a swirl shunt pipe 113. The switch valve 112 is fixedly connected to the outlet end of the liquid outlet pipe 111, and the swirl shunt pipe 113 is fixedly connected to the outside of the switch valve 112. The liquid outlet pipe 111 is connected to the swirl shunt pipe 113 through the switch valve 112. When the device is in use, the liquid delivery speed can be controlled by switching the switch valve 112. A drain pipe 107 is also installed at the bottom of the tank body 101. The liquid with more impurities entering the collection chamber 106 can be discharged from the drain pipe 107. It should be noted that during the sewage treatment process, it is necessary to always keep the liquid inside the flotation chamber 108 lower than the liquid inside the collection chamber 106 to avoid impurities from flowing back.

[0044] Please see attached Fig. 9 -Attached Fig.13 The primary cyclone separation mechanism 2 includes a parallel cyclone group 201, which is composed of a plurality of axially inserted hydrocyclones 202. An input port on one side of the axially inserted hydrocyclone 202 is connected to a cyclone diversion pipe 113. The plurality of axially inserted hydrocyclones 202 are connected in parallel to the cyclone diversion pipe 113. The axially inserted hydrocyclones 202 can be flexibly connected according to the amount of sewage to be treated. The top output port of the axially inserted hydrocyclone 202 is connected to a primary cyclone overflow pipe 205, and the bottom output port of the axially inserted hydrocyclone 202 is connected to a primary cyclone underflow pipe 206. The inlet end of the shaft-entered hydrocyclone 202 is set as a cyclone inlet 2021, which is connected to the cyclone diversion pipe 113 through a flange. The sewage discharged from the liquid outlet pipe 111 enters the shaft-entered hydrocyclone 202 after passing through the cyclone diversion pipe 113 and the cyclone inlet 2021. A spiral flow channel 203 is installed on the upper end of the shaft-entered hydrocyclone 202 through a flange. When the sewage enters from the cyclone inlet 2021, it will contact the outer surface of the spiral flow channel 203, and then the sewage will be accelerated by the outer surface of the spiral flow channel 203, and a centrifugal effect will be generated. At this time, under the influence of centrifugation, the gas and liquid in the sewage are separated, the liquid flows downward along the outer wall of the spiral flow channel 203, and the gas is squeezed to the middle. A cyclone overflow port 2022 is provided in the middle of the spiral flow channel 203. After the separated gas enters the shaft-entered hydrocyclone 202, it is discharged from the cyclone overflow port 2022 and finally transported to the secondary cyclone recovery mechanism 3 for further processing. The bottom outlet of the shaft-entered hydrocyclone 202 is set as a cyclone bottom flow port 2023. The middle of the cyclone bottom flow port 2023 is connected with an inverted cone 204 through a flange. The separated liquid flows downward and contacts the inverted cone 204. In this process, the gas carried down will be lifted by the conical surface of the inverted cone 204 to accelerate the separation, thereby improving the separation efficiency.

[0045] Please see attached Fig.14 -Attached Fig.17The secondary cyclone recovery mechanism 3 includes a liquid inlet chamber 302, a secondary separation chamber 303 and a liquid collecting chamber 306. An inclined flow channel 304 is installed inside the secondary separation chamber 303. The two ends of the inclined flow channel 304 are connected to the liquid inlet chamber 302 and the liquid collecting chamber 306 respectively. An inlet pipe 301 is installed on the top of the liquid inlet chamber 302. The input end of the inlet pipe 301 is connected to the primary cyclone overflow pipe 205. The gas and a small amount of liquid carried by the axial hydrocyclone 202 after preliminary separation enter the inlet pipe 301 through the primary cyclone overflow pipe 205, and then after being gathered through the liquid inlet chamber 302, they flow from the inclined flow channel 304 to the liquid collecting chamber 306. When flowing through the inclined flow channel 304, the liquid is subjected to the centrifugal effect of the inclined flow channel 304 and is separated from the gas again, thereby achieving further separation of gas and liquid. The liquid collecting chamber 306 is fixedly connected with a liquid collecting inclined plate 305, and a secondary outlet pipe 308 is installed on one side of the liquid collecting inclined plate 305. The separated liquid is gathered through the liquid collecting inclined plate 305 and finally discharged from the secondary outlet pipe 308. The other end of the secondary outlet pipe 308 is fixedly connected with a switch valve 309, and the other end of the switch valve 309 is fixedly connected with a pump end pipe 310. The discharge speed of the liquid is controlled by the switch valve 309 to achieve flow control. An air pump 312 is fixedly connected to the outside of the liquid collecting chamber 306, and an outlet pipe 313 is fixedly connected to the output end of the air pump 312. The other end of the outlet pipe 313 is connected to the three-way pipe 105. The external air is extracted by the air pump 312 and transported to the three-way pipe 105 through the outlet pipe 313, so that the air is injected from the air inlet 104 to complete the separation of impurities in the sewage.

[0046] The outer end of the primary cyclone underflow pipe 206 is fixedly connected with a switch valve 207, and the other end of the switch valve 207 is fixedly connected to the bottom of the pump end pipe 310. The liquid separated by the shaft-entry hydrocyclone 202 is transported to the pump end pipe 310 through the primary cyclone underflow pipe 206, and the transport speed is controlled by the switch valve 207. The top of the liquid collecting chamber 306 is connected with an exhaust pipe 307, and the gas separated by the inclined flow channel 304 enters the exhaust pipe 307 from the top of the liquid collecting chamber 306 to complete the gas discharge. The exhaust pipe 307 passes through the side wall of the liquid inlet chamber 302 and is fixedly connected with an inlet pipe 2 311. The other end of the inlet pipe 2 311 is connected to the input end of the air pump 312. The discharged gas is transported to the air pump 312 through the inlet pipe 2 311, and is transported to the outlet pipe 313 again through the air pump 312, so that the gas is recycled and the production cost is reduced.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cyclone type air flotation tank gas-liquid separation device, characterized in that: It comprises an air flotation tank mechanism (1) for performing air flotation treatment, wherein the outer side of the air flotation tank mechanism (1) is connected to a primary cyclone separation mechanism (2) for performing preliminary separation of gas and liquid, and the other side of the primary cyclone separation mechanism (2) is connected to a secondary cyclone recovery mechanism (3) for performing secondary separation of gas and liquid; The flotation tank mechanism (1) comprises a tank body (101), a partition plate (109) is fixedly installed inside the tank body (101), the partition plate (109) divides the inside of the tank body (101) into two parts, namely a collection chamber (106) and an air flotation chamber (108), a bubble plate (110) is installed inside the air flotation chamber (108), a side wall of the tank body (101) is provided with an air inlet (104) and a liquid inlet (103), the outlet end of the air inlet (104) is located at the bottom of the bubble plate (110), the outside of the air inlet (104) is connected to a three-way pipe (105) via a flange, the outside of the tank body (101) is connected to a liquid outlet pipe (111), the inlet end of the liquid outlet pipe (111) is located at the top of the bubble plate (110), and the other end of the liquid outlet pipe (111) is connected to the primary cyclone separation mechanism (2).

2. A cyclone type air flotation tank gas-liquid separation device according to claim 1, characterized in that: The flotation tank mechanism (1) further comprises a switch valve (112) and a swirl shunt pipe (113); the switch valve (112) is fixedly connected to the outlet end of the liquid outlet pipe (111); the swirl shunt pipe (113) is fixedly connected to the outside of the switch valve (112); and a liquid discharge pipe (107) is also installed at the bottom of the tank body (101).

3. A cyclone type air flotation tank gas-liquid separation device according to claim 2, characterized in that: The primary cyclone separation mechanism (2) comprises a parallel cyclone group (201), wherein the parallel cyclone group (201) is composed of a plurality of axially inserted hydrocyclones (202), an input port on one side of the axially inserted hydrocyclone (202) is connected to the cyclone diversion pipe (113), a top output port of the axially inserted hydrocyclone (202) is connected to a primary cyclone overflow pipe (205), and a bottom output port of the axially inserted hydrocyclone (202) is connected to a primary cyclone underflow pipe (206).

4. A cyclone type air flotation tank gas-liquid separation device according to claim 3, characterized in that: The inlet end of the shaft-entered hydrocyclone (202) is set as a cyclone inlet (2021), and the cyclone inlet (2021) is connected to the cyclone diversion pipe (113) through a flange. A spiral flow channel (203) is installed on the upper end of the shaft-entered hydrocyclone (202) through a flange, and a cyclone overflow port (2022) is opened in the middle of the spiral flow channel (203). The bottom outlet end of the shaft-entered hydrocyclone (202) is set as a cyclone bottom flow port (2023), and the middle of the cyclone bottom flow port (2023) is connected to an inverted cone (204) through a flange.

5. The cyclone type air flotation tank gas-liquid separation device according to claim 3, characterized in that: The secondary cyclone recovery mechanism (3) comprises a liquid inlet chamber (302), a secondary separation chamber (303) and a liquid collecting chamber (306); an inclined flow channel (304) is installed inside the secondary separation chamber (303); two ends of the inclined flow channel (304) are respectively connected to the liquid inlet chamber (302) and the liquid collecting chamber (306); an inlet pipe (301) is installed at the top of the liquid inlet chamber (302); the input end of the inlet pipe (301) is connected to the primary cyclone overflow pipe (205).

6. A cyclone type air flotation tank gas-liquid separation device according to claim 5, characterized in that: The liquid collecting chamber (306) is fixedly connected to a liquid collecting inclined plate (305), one side of the liquid collecting inclined plate (305) is provided with a secondary water outlet pipe (308), the other end of the secondary water outlet pipe (308) is fixedly connected to a switch valve three (309), and the other end of the switch valve three (309) is fixedly connected to a pump end pipe (310).

7. The cyclone type air flotation tank gas-liquid separation device according to claim 5, characterized in that: An air pump (312) is fixedly connected to the outside of the liquid collecting chamber (306), an output end of the air pump (312) is fixedly connected to an outlet pipe (313), and the other end of the outlet pipe (313) is connected to the three-way pipe (105).

8. The cyclone type air flotation tank gas-liquid separation device according to claim 6, characterized in that: The outer end of the first-stage cyclone underflow pipe (206) is fixedly connected to a second switch valve (207), and the other end of the second switch valve (207) is fixedly connected to the bottom of the pump end pipe (310).

9. The cyclone type air flotation tank gas-liquid separation device according to claim 7, characterized in that: The top of the liquid collecting chamber (306) is connected to an exhaust pipe (307), and the exhaust pipe (307) passes through the side wall of the liquid inlet chamber (302) and is fixedly connected to an inlet pipe 2 (311), and the other end of the inlet pipe 2 (311) is connected to the input end of the air pump (312).

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