Air flotation separation device for well washing sewage treatment

Abstract

The invention provides an air flotation separation device for well washing sewage treatment, and relates to the technical field of sewage treatment.The air flotation separation device comprises a main box body, the top of the main box body is fixedly connected with a top frame, and the right end of the main box body is fixedly connected with a water collecting pipe; the top of the top frame is fixedly connected with a servo motor A, and the bottom end of a rotating shaft of the servo motor A is coaxially connected with a belt pulley; the bottom of the top frame is fixedly connected with an aerator, the vertical face of the right side of the main box body is fixedly connected with a nitrogen generator, the front end of the nitrogen generator is fixedly connected with an air pump, the top of the aerator is fixedly connected with an air injection pipe, and the interior of the air injection pipe is connected with an electromagnetic valve through a flange. According to the air flotation separation device, sewage can be foamed by increasing the nitrogen content, external oxygen dissolution can be reduced, corrosion of reinjection water can be reduced, and the problem that a traditional air flotation separation device is inconvenient to reduce dissolved oxygen in the reinjection water is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to an air flotation separation device for treating well flushing sewage. Background Art

[0002] When the water injection of the oil reservoir fails to reach the planned water injection volume, the injection well must be backwashed to remove the solids and biofilms deposited on the filter screen. At this time, well flushing wastewater is generated. Oxygen plays a depolarizing role in electrochemical corrosion and will also exacerbate the corrosion caused by the formation of hydrogen sulfide. The presence of dissolved oxygen will also convert Fe2+ to Fe3+, which is not conducive to reinjection. In addition, dissolved oxygen can also accelerate the reproduction rate of aerobic bacteria, exacerbating biological corrosion. The reinjected water needs to reduce the content of dissolved oxygen, hydrogen sulfide and carbon dioxide in it to reduce its corrosiveness. The existing air flotation separation device is not convenient for reducing the hydrogen sulfide reduced by the reaction of sulfate in sewage and hydrocarbons in crude oil. The existing device is not convenient for reducing the content of dissolved oxygen and carbon dioxide in the reinjected water, not convenient for reducing its corrosiveness to the metal protective film, not convenient for recycling the sewage after treatment, and the existing separation device is not convenient for driving the aerator to operate by wind power and not convenient for saving electricity and reducing costs.

[0003] There is a need for an air flotation separation device for treating well flushing sewage to reduce the corrosiveness of the reinjected water. Summary of the Invention

[0004] In view of this, the present invention provides an air flotation separation device for treating well flushing sewage. By setting an air injection pipe, nitrogen can be injected into the impeller of the aerator, and the sewage can be foamed by increasing the nitrogen content, which can reduce the dissolution of external oxygen and reduce the corrosiveness of the reinjected water.

[0005] The present invention provides an air flotation separation device for treating well flushing sewage, which specifically includes: a main box body; a base is fixedly connected to the bottom of the main box body; an outer support is fixedly connected to the top of the base; a water inlet pipe is fixedly connected to the left end of the main box body, and a control valve is arranged inside the water inlet pipe through flange connection; a heating barrel is fixedly connected to the inside of the main box body, and the left end of the bottom of the heating barrel is fixedly connected to the water inlet pipe; a spiral heating pipe is fixedly connected to the inside of the heating barrel; a top frame is fixedly connected to the top of the main box body, and a water collecting pipe is fixedly connected to the right end of the main box body; a servo motor A is fixedly connected to the top of the top frame, and a pulley is arranged at the bottom end of the rotating shaft of the servo motor A through coaxial connection; an aerator is fixedly connected to the bottom of the top frame; a driving pulley is arranged at the top of the rotor of the aerator through coaxial connection; a connecting rod is arranged at the top of the driving pulley through coaxial connection; an external heating pipe is fixedly connected to the bottom inside the main box body.

[0006] Optionally, a bottom support is fixedly connected to the top of the top frame, an outer pipe is fixedly connected to the top of the bottom support, the outer curved surface of the outer pipe is fixedly connected to the top of the outer support, and a chute is arranged on the outer curved surface of the outer pipe.

[0007] Optionally, a sleeve is arranged on the outer side of the outer tube through a sliding connection. The number of sleeves is set to two groups. An inner rib is fixedly connected to the inner curved surface of the sleeve, and the sliding groove is slidably connected to the inner rib.

[0008] Optionally, a clamping piece is fixedly connected to the bottom end of the sleeve. A bolt is inserted through the inner side of the clamping piece, and a guard plate is clamped and arranged on the inner side of the clamping piece.

[0009] Optionally, a nitrogen generator is fixedly connected to the right side vertical surface of the main box body. An air pump is fixedly connected to the front end of the nitrogen generator. An injection pipe is fixedly connected to the top of the aerator, and a solenoid valve is arranged inside the injection pipe through a flange connection.

[0010] Optionally, a floating frame is arranged inside the main box body through a sliding connection. Slide rails are arranged on the left and right sides of the floating frame through a sliding connection, and the outer sides of the slide rails are fixedly connected to the left and right side vertical surfaces inside the main box body.

[0011] Optionally, a paddle conveyor belt is arranged inside the floating frame through a rotational connection. A reciprocating lead screw is fixedly connected to the right side of the main box body, and the bottom of the ball nut seat of the reciprocating lead screw is fixedly connected to the top of the floating frame.

[0012] Optionally, a detection box is fixedly connected to the top of the main box body. A sliding rheostat coil is fixedly connected to the inside of the detection box. A sliding tube is fixedly connected to the bottom of the detection box. A sleeve rod is arranged inside the sliding tube through a sliding connection. A floating plate is fixedly connected to the bottom end of the sleeve rod, and a sliding piece is fixedly connected to the top of the sleeve rod.

[0013] Optionally, a collecting pipe is fixedly connected to the right end of the main box body. A servo motor B is fixedly connected to the side end of the collecting pipe. An auger rod is arranged inside the collecting pipe through a rotational connection. The auger rod is coaxially connected to the rotating shaft of the servo motor B, and a slag discharge pipe is fixedly connected to the bottom end of the collecting pipe.

[0014] Optionally, an hourglass-shaped tube is arranged at the top of the outer tube through a rotational connection. A conduction fan blade is arranged inside the hourglass-shaped tube through a rotational connection. A bevel gear B is coaxially connected to the right end of the conduction fan blade. The bevel gear B meshes with the bevel gear A, and a guide plate is fixedly connected to the top of the hourglass-shaped tube.

[0015] Beneficial effects Compared with the traditional separation device, the separation device according to the embodiments of the present invention can heat the sewage by starting the external heating tube and the spiral heating tube, can reduce the solubility of carbon dioxide in the sewage, can reduce the corrosion of carbon dioxide, prevent it from reducing the pH value of the washing well water, prevent it from damaging the metal protective film, and at the same time, by heating, the hydrogen sulfide reduced by the reaction of sulfate in the sewage and hydrocarbons in the crude oil can be reduced, and the corrosion of the metal protective film can be reduced, which is convenient for recycling the sewage after treatment.

[0016] In addition, by setting up the sleeve pipe, after moving the main box body inside the movable prefabricated house, making an opening on the top of the house, extending the top of the outer pipe above the top of the house, passing the two groups of guard plates through the bolts inside the clamping pieces, docking the two groups of sleeve pipes with each other above and below the ceiling of the house respectively, and clamping and fixing the ceiling of the house with the two groups of clamping pieces through bolts, the guard plates and the sleeve pipes can cooperate to block the opening on the top of the house above, which can improve the firmness of the outer pipe and the house and prevent rainwater leakage at the same time.

[0017] In addition, by setting up the injection pipe, nitrogen can be injected into the impeller of the aerator, the sewage can be foamed by increasing the nitrogen content, the external oxygen dissolution can be reduced, and the corrosion of the reinjected water can be reduced.

[0018] In addition, by setting up the conduction fan blades, when the external wind passes through the hourglass-shaped pipe, the guide plate can be parallel to the wind direction, the wind can drive the conduction fan blades to rotate, the conduction fan blades can drive the bevel gear B to rotate, the bevel gear B can drive the bevel gear A to rotate, the bevel gear A can drive the connecting rod to rotate, the connecting rod can drive the rotor of the aerator to rotate, and the wind can be used to drive the aerator to operate, which can save electricity and reduce costs.

[0019] In addition, by setting up the auger rod, when the sleeve piece conveyor belt operates, the foam can be scraped into the collection pipe. By the operation of the servo motor B, the servo motor B can drive the auger rod to rotate, the scum can be transported to the slag discharge pipe, and the scum can be continuously discharged.

[0020] In addition, by setting up the spring rod, by starting the operation of the servo motor A and through belt transmission, it can drive the driving pulley to rotate, the driving pulley can drive the fixed-speed wheel to rotate at a high speed. Due to the centrifugal force, the spring rod can slide outward, the spring rod can slide into the limit groove, the fixed-speed wheel can drive the rotor of the aerator coaxial with the bottom of the outer fixed pipe to rotate. When the servo motor A is turned off and the connecting rod is driven to rotate by the wind and the outer fixed pipe rotates, when the rotation speed is lower than the transmission rotation speed of the servo motor A, the centrifugal force is lower, the spring rod retracts into the fixed-speed wheel, the fixed-speed wheel can be disengaged from the transmission of the outer fixed pipe, the connecting rod can be prevented from driving the driving pulley to rotate, and the operation resistance can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0022] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0023] In the drawings: Figure 1Shows a schematic diagram of the three-dimensional disassembled structure of the sleeve of the separation device according to Embodiment 1 of the present invention; Figure 2 Shows Embodiment 1 according to the present invention Figure 1 Schematic diagram of a partial enlargement of A in; Figure 3 Shows a schematic diagram of the left three-dimensional structure of the overall separation device according to Embodiment 1 of the present invention; Figure 4 Shows Embodiment 1 according to the present invention Figure 3 Schematic diagram of a partial enlargement of B in; Figure 5 Shows a schematic diagram of the side sectional three-dimensional structure of the main box body of the separation device according to Embodiment 1 of the present invention; Figure 6 Shows a schematic diagram of the side sectional three-dimensional structure of the detection box of the separation device according to Embodiment 1 of the present invention; Figure 7 Shows a schematic diagram of the rear three-dimensional structure of the overall separation device according to Embodiment 1 of the present invention; Figure 8 Shows a schematic diagram of the side sectional three-dimensional structure of the hourglass tube of the separation device according to Embodiment 2 of the present invention; Figure 9 Shows a schematic diagram of the three-dimensional disassembled structure of the fixed-speed wheel of the separation device according to Embodiment 2 of the present invention; List of reference numerals 1. Main box body; 101. Base; 1011. Outer bracket; 102. Water inlet pipe; 103. Heating barrel; 1031. Spiral heating pipe; 104. Water collecting pipe; 105. Detection box; 1051. Slide rheostat coil; 1052. Slide tube; 1053. Floating plate; 1054. Slide piece; 2. Top frame; 201. Servo motor A; 202. Aerator; 2021. Driving pulley; 2022. Connecting rod; 2023. Bevel gear A; 203. Air injection pipe; 2031. Solenoid valve; 204. Sleeve; 2041. Inner edge; 2042. Clamping piece; 205. Protective plate; 206. Bottom bracket; 2061. Outer tube; 2062. Slide groove; 207. Fixed-speed wheel; 2071. Spring rod; 208. Outer fixed tube; 2081. Limit groove; 3. Nitrogen generator; 301. Air pump; 4. Outer heating pipe; 5. Floating frame; 501. Slide rail; 502. Paddle conveyor belt; 6. Reciprocating lead screw; 7. Collection pipe; 701, Servo motor B; 702, Auger rod; 703, Slag discharge pipe; 8, Hourglass-shaped pipe; 801, Conductive fan blade; 8011, Bevel gear B; 802, Guide plate; 803, Solar top plate. Detailed implementation mode

[0024] In order to make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0025] Embodiment 1: Please refer to Figures 1 to 7 : The present invention provides a flotation separation device for washing well sewage treatment, including: main box body 1; a base 101 is fixedly connected to the bottom of the main box body 1; an outer bracket 1011 is fixedly connected to the top of the base 101; a water inlet pipe 102 is fixedly connected to the left end of the main box body 1, and a control valve is arranged inside the water inlet pipe 102 through flange connection; a heating barrel 103 is fixedly connected inside the main box body 1, and the left end of the bottom of the heating barrel 103 is fixedly connected to the water inlet pipe 102; a spiral heating pipe 1031 is fixedly connected to the inner side of the heating barrel 103; a top frame 2 is fixedly connected to the top of the main box body 1, and a water collecting pipe 104 is fixedly connected to the right end of the main box body 1; a servo motor A201 is fixedly connected to the top of the top frame 2, and a pulley is arranged at the bottom end of the rotating shaft of the servo motor A201 through coaxial connection; an aerator 202 is fixedly connected to the bottom of the top frame 2; a driving pulley 2021 is arranged at the top of the rotor of the aerator 202 through coaxial connection; a connecting rod 2022 is arranged at the top of the driving pulley 2021 through coaxial connection; an external heating pipe 4 is fixedly connected to the inner bottom of the main box body 1. By starting the external heating pipe 4 and the spiral heating pipe 1031, the sewage can be heated, the solubility of carbon dioxide in the sewage can be reduced, the carbon dioxide corrosion can be reduced, the pH value of the washing well water can be prevented from being reduced, and the metal protective film can be prevented from being damaged. At the same time, by heating, the hydrogen sulfide reduced by the reaction of sulfate in the water and hydrocarbons in the crude oil can be reduced, and the corrosion of the metal protective film can be reduced, which is convenient for recycling after sewage treatment.

[0026] As Figures 1 to 6As shown in the figure, a bottom bracket 206 is fixedly connected to the top of the top frame 2. An outer tube 2061 is fixedly connected to the top of the bottom bracket 206. The outer curved side of the outer tube 2061 is fixedly connected to the top of the outer bracket 1011. A chute 2062 is provided on the outer curved side of the outer tube 2061. A sleeve 204 is arranged on the outside of the outer tube 2061 through a sliding connection. The number of sleeves 204 is set to two groups. An inner rib 2041 is fixedly connected to the inner curved side of the sleeve 204. The chute 2062 is slidably connected to the inner rib 2041. A clamping piece 2042 is fixedly connected to the bottom end of the sleeve 204. A bolt is inserted through the inner side of the clamping piece 2042. A guard plate 205 is clamped and arranged on the inner side of the clamping piece 2042. After moving the main box body 1 into the mobile panel house and opening a hole in the top of the panel house, when the top of the outer tube 2061 extends above the top of the panel house, after passing the two guard plates 205 through the bolts on the inner side of the clamping piece 2042 and docking the two sleeves 204 above and below the ceiling of the panel house respectively, and then clamping and fixing the ceiling of the panel house by the bolts on the two clamping pieces 2042, the guard plate 205 and the sleeve 204 can cooperate to block the hole in the top of the panel house above, which can improve the firmness between the outer tube 2061 and the panel house and prevent rainwater leakage at the same time.

[0027] As Figures 1 to 7 As shown in the figure, a nitrogen generator 3 is fixedly connected to the right side surface of the main box body 1. An air pump 301 is fixedly connected to the front end of the nitrogen generator 3. An injection pipe 203 is fixedly connected to the top of the aerator 202. A solenoid valve 2031 is arranged inside the injection pipe 203 through a flange connection. By starting the nitrogen generator 3, nitrogen can be conducted to the air pump 301. Through pressurization by the air pump 301, nitrogen can be transported to the impeller at the bottom of the aerator 202, and nitrogen injection and foaming can be carried out on the sewage inside the heating barrel 103.

[0028] As Figure 6As shown, a detection box 105 is fixedly connected to the top of the main box body 1. A sliding rheostat coil 1051 is fixedly connected to the inner side of the detection box 105. A sliding tube 1052 is fixedly connected to the bottom of the detection box 105. A sleeve rod is arranged inside the sliding tube 1052 through a sliding connection. A floating plate 1053 is fixedly connected to the bottom end of the sleeve rod. A sliding piece 1054 is fixedly connected to the top of the sleeve rod. A floating frame 5 is arranged inside the main box body 1 through a sliding connection. Slide rails 501 are arranged on the left and right sides of the floating frame 5 through a sliding connection. The outer sides of the slide rails 501 are fixedly connected to the left and right side vertical surfaces inside the main box body 1. A paddle conveyor belt 502 is arranged inside the floating frame 5 through a rotational connection. A reciprocating lead screw 6 is fixedly connected to the right side of the main box body 1. The bottom of the ball nut seat of the reciprocating lead screw 6 is fixedly connected to the top of the floating frame 5. After injecting the well flushing sewage into the main box body 1 through the water inlet pipe 102, the floating plate 1053 can be driven to float by the buoyancy of the sewage. Then, the floating plate 1053 can drive the sliding piece 1054 to slide upward, the sliding piece 1054 can drive the electrical signal of the sliding rheostat coil 1051 to change, the liquid level height value can be coupled with the electrical signal, the detection box 105 can drive the reciprocating lead screw 6 to perform servo operation, the floating frame 5 can be driven to perform vertical displacement through the ball nut seat of the reciprocating lead screw 6, and the horizontal height of the paddle conveyor belt 502 can be adapted to the liquid level.

[0029] As Figure 1 shown, a collecting pipe 7 is fixedly connected to the right end of the main box body 1. A servo motor B701 is fixedly connected to the side end of the collecting pipe 7. A screw conveyor rod 702 is arranged inside the collecting pipe 7 through a rotational connection. The screw conveyor rod 702 is coaxially connected to the rotating shaft of the servo motor B701. A slag discharge pipe 703 is fixedly connected to the bottom end of the collecting pipe 7. By operating the paddle conveyor belt 502, the floating foam can be scraped into the collecting pipe 7. By operating the servo motor B701, the servo motor B701 can drive the screw conveyor rod 702 to rotate, and the floating slag can be transported to the slag discharge pipe 703, and the floating slag can be continuously discharged.

[0030] Embodiment 2: Please refer to Figures 8 to 9 : At the top of the outer pipe 2061, an hourglass-shaped pipe 8 is arranged through a rotating connection. Inside the hourglass-shaped pipe 8, a conduction fan blade 801 is arranged through a rotating connection. At the right end of the conduction fan blade 801, a bevel gear B8011 is arranged through a coaxial connection. The bevel gear B8011 meshes with the bevel gear A2023. At the top of the hourglass-shaped pipe 8, a guide plate 802 is fixedly connected. When external wind passes through the hourglass-shaped pipe 8, the guide plate 802 can be parallel to the wind direction, the wind can drive the conduction fan blade 801 to rotate, the conduction fan blade 801 can drive the bevel gear B8011 to rotate, the bevel gear B8011 can drive the bevel gear A2023 to rotate, the bevel gear A2023 can drive the connecting rod 2022 to rotate, the connecting rod 2022 can drive the rotor of the aerator 202 to rotate, the aerator 202 can be driven to operate by the wind, and electricity can be saved and costs can be reduced.

[0031] As Figure 8 shown, a solar roof panel 803 is fixedly connected to the top of the guide plate 802. Inside the transmission pulley 2021, a fixed-speed wheel 207 is fixedly connected. A circular groove is formed on the curved surface of the fixed-speed wheel 207, and a spring rod 2071 is fixedly connected inside the circular groove. An outer fixed pipe 208 is sleeved outside the fixed-speed wheel 207. A limiting groove 2081 is formed inside the outer fixed pipe 208. The bottom of the outer fixed pipe 208 is coaxially connected to the rotor of the aerator 202. By starting the operation of the servo motor A201 and through belt transmission, it can drive the transmission pulley 2021 to rotate, the transmission pulley 2021 can drive the fixed-speed wheel 207 to rotate at a high speed. Due to centrifugal force, the spring rod 2071 can slide outward, the spring rod 2071 can slide into the limiting groove 2081, and the fixed-speed wheel 207 can drive the rotor of the aerator 202 coaxially connected to the bottom of the outer fixed pipe 208 to rotate. When the servo motor A201 is turned off and the connecting rod 2022 is driven to rotate by the wind, when the rotation speed of the outer fixed pipe 208 driven by the connecting rod 2022 is lower than the transmission rotation speed of the servo motor A201, the centrifugal force is lower, the spring rod 2071 retracts into the inside of the fixed-speed wheel 207, the fixed-speed wheel 207 can be disengaged from the transmission with the outer fixed pipe 208, the connecting rod 2022 can be prevented from driving the transmission pulley 2021 to rotate, and the operating resistance can be reduced.

[0032] Specific usage and functions of this embodiment: In the present invention, during use, after moving the main box body 1 into the movable plank house, an opening is made in the top of the plank house, and after the top of the outer pipe 2061 extends above the top of the plank house, by passing the two sets of guard plates 205 through the bolts inside the clamping pieces 2042, and then docking the two sets of sleeves 204 above and below the ceiling of the plank house respectively, and then clamping and fixing the ceiling of the plank house with the two sets of clamping pieces 2042 through bolts, the guard plates 205 and the sleeves 204 can cooperate to block the opening in the top of the plank house above, which can improve the firmness between the outer pipe 2061 and the plank house and prevent rainwater leakage. After injecting the well flushing sewage into the main box body 1 through the water inlet pipe 102, the floating plate 1053 floats upward driven by the buoyancy of the sewage, which can drive the sliding piece 1054 to slide upward, and the sliding piece 1054 can drive the electrical signal of the sliding rheostat coil 1051 to change, so that the liquid level height value and the electrical signal can be coupled, and the detection box 105 can drive the reciprocating lead screw 6 to operate servo. The floating frame 5 makes a vertical displacement driven by the ball nut seat of the reciprocating lead screw 6, so that the horizontal height of the dial conveyor belt 502 can adapt to the liquid level. By starting the nitrogen generator 3, nitrogen can be conducted to the air pump 301, and the nitrogen can be transmitted to the impeller at the bottom of the aerator 202 through pressurization by the air pump 301, so as to inject nitrogen into the sewage in the heating barrel 103 to generate bubbles. By starting the external heating pipe 4 and the spiral heating pipe 1031, the sewage can be heated, which can reduce the solubility of carbon dioxide in the sewage, reduce the corrosiveness of carbon dioxide, prevent it from reducing the pH value of the well flushing water, and prevent it from damaging the metal protective film. At the same time, heating can reduce the hydrogen sulfide reduced by the reaction of sulfate in water and hydrocarbons in crude oil, reduce the corrosion of the metal protective film, and facilitate the recycling of the sewage after treatment. Due to the external wind, the guide plate 802 can be parallel to the wind direction, which can drive the conduction fan blade 801 to rotate, and the conduction fan blade 801 can drive the bevel gear B8011 to rotate, the bevel gear B8011 can drive the bevel gear A2023 to rotate, the bevel gear A2023 can drive the connecting rod 2022 to rotate, and the connecting rod 2022 can drive the rotor of the aerator 202 to rotate, so that the aerator 202 can be driven to operate by the wind, which can save electricity and reduce costs.

[0033] Finally, it should be noted that when describing the positions and the cooperation relationships between various components of the present invention, usually one / a pair of components are taken as examples. However, those skilled in the art should understand that such positions, cooperation relationships, etc. are equally applicable to other components / other pairs of components. The above description is only an exemplary embodiment of the present invention and is not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. An air flotation separation device for treating well-washing wastewater, characterized in that: include: A main box (1); a base (101) is fixedly connected to the bottom of the main box (1); an external bracket (1011) is fixedly connected to the top of the base (101); a water inlet pipe (102) is fixedly connected to the left end of the main box (1), and a control valve is provided inside the water inlet pipe (102) via a flange connection; a heating barrel (103) is fixedly connected to the inside of the main box (1), and the left end of the bottom of the heating barrel (103) is fixedly connected to the water inlet pipe (102); a spiral heating pipe (1031) is fixedly connected to the inside of the heating barrel (103); the top of the main box (1) is fixedly connected to A top frame (2) is provided, and a water collecting pipe (104) is fixedly connected to the right end of a main box body (1); a servo motor A (201) is fixedly connected to the top of the top frame (2), and a pulley is coaxially connected to the bottom end of the rotating shaft of the servo motor A (201); an aerator (202) is fixedly connected to the bottom of the top frame (2); a transmission pulley (221) is coaxially connected to the top of the rotor of the aerator (202); a connecting rod (222) is coaxially connected to the top of the transmission pulley (221); and an external heating pipe (4) is fixedly connected to the bottom of the inner side of the main box body (1).

2. The air flotation separation device for treating well-washing wastewater according to claim 1, characterized in that: The top of the top frame (2) is fixedly connected to a bottom bracket (206), the top of the bottom bracket (206) is fixedly connected to an outer tube (2061), the outer curved side surface of the outer tube (2061) is fixedly connected to the top of the outer bracket (1011), and a slide groove (2062) is provided on the outer curved side surface of the outer tube (2061).

3. The air flotation separation device for treating well-washing wastewater according to claim 2, characterized in that: The outer side of the outer tube (2061) is provided with a sleeve (204) in a sliding connection, the sleeve (204) is provided in two groups, the inner curved side surface of the sleeve (204) is fixedly connected with an inner edge (2041), and the slide groove (2062) is slidably connected to the inner edge (2041).

4. The air flotation separation device for treating well-washing wastewater as claimed in claim 3, characterized in that: The bottom end of the sleeve (204) is fixedly connected to a clamping piece (2042), a bolt is passed through the inner side of the clamping piece (2042), and a guard plate (205) is clamped and arranged on the inner side of the clamping piece (2042).

5. The air flotation separation device for treating well-washing wastewater according to claim 1, characterized in that: A nitrogen generator (3) is fixedly connected to the right vertical surface of the main box body (1), an air pump (301) is fixedly connected to the front end of the nitrogen generator (3), an air injection pipe (203) is fixedly connected to the top of the aerator (202), and a solenoid valve (2031) is provided inside the air injection pipe (203) via a flange connection.

6. The air flotation separation device for treating well-washing wastewater according to claim 1, characterized in that: A floating frame (5) is provided inside the main box body (1) through a sliding connection, and slide rails (501) are provided on the left and right sides of the floating frame (5) through a sliding connection, and the outer sides of the slide rails (501) are fixedly connected to the left and right vertical surfaces inside the main box body (1).

7. The air flotation separation device for treating well-washing wastewater according to claim 6, characterized in that: A paddle conveyor belt (502) is provided inside the floating frame (5) through a rotatable connection, a reciprocating screw (6) is fixedly connected to the right side of the main box body (1), and the bottom of the ball nut seat of the reciprocating screw (6) is fixedly connected to the top of the floating frame (5).

8. The air flotation separation device for treating well-washing wastewater according to claim 1, characterized in that: The top of the main box body (1) is fixedly connected to a detection box (105), the inner side of the detection box (105) is fixedly connected to a sliding variable resistance coil (1051), the bottom of the detection box (105) is fixedly connected to a sliding tube (1052), the inner side of the sliding tube (1052) is provided with a sleeve rod through a sliding connection, the bottom end of the sleeve rod is fixedly connected to a floating plate (1053), and the top of the sleeve rod is fixedly connected to a sliding sheet (1054).

9. The air flotation separation device for treating well-washing wastewater according to claim 1, characterized in that: The right end of the main box (1) is fixedly connected to a collecting pipe (7), the side end of the collecting pipe (7) is fixedly connected to a servo motor B (701), an agitator rod (702) is provided inside the collecting pipe (7) through a rotatable connection, the agitator rod (702) is coaxially connected to the rotating shaft of the servo motor B (701), and a slag discharge pipe (703) is fixedly connected to the bottom end of the collecting pipe (7).

10. The air flotation separation device for treating well-washing wastewater according to claim 2, characterized in that: An hourglass-shaped tube (8) is provided at the top of the outer tube (2061) through a rotatable connection, a conduction blade (801) is provided inside the hourglass-shaped tube (8) through a rotatable connection, a bevel gear B (8011) is provided at the right end of the conduction blade (801) through a coaxial connection, the bevel gear B (8011) is meshed with the bevel gear A (2023), and a guide plate (802) is fixedly connected to the top of the hourglass-shaped tube (8).

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