Low-temperature heat-conducting oil production wastewater treatment equipment

Abstract

The invention discloses low-temperature heat-conducting oil production wastewater treatment equipment in the technical field of wastewater treatment equipment. The low-temperature heat conduction oil production wastewater treatment equipment comprises a tank body, the side wall of the tank body is fixedly communicated with a waste inlet pipe, the middle of the bottom wall of the tank body is fixedly communicated with a water outlet pipe, the upper end and the lower end of the inner side wall of the tank body are fixedly connected with an upper ring and a lower ring respectively, and a rotating pipe is further arranged in the tank body; the upper end and the lower end of the rotating pipe are movably connected to the upper ring and the lower ring correspondingly, and the waste inlet pipe is located between the upper ring and the lower ring. According to the low-temperature heat-conducting oil production wastewater treatment equipment, by means of the design of the first filtering mechanism, the annular filter screen, the second filtering mechanism and the electrolysis mechanism, oil-containing wastewater can be subjected to multi-stage treatment, meanwhile, electrochemical treatment is additionally arranged, efficient separation is achieved for emulsified grease and small oil droplets, and the problems proposed in the background technology are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment equipment, in particular to a low-temperature heat-conducting oil production wastewater treatment equipment. BACKGROUND

[0002] Low-temperature heat-conducting oil is a synthetic heat-conducting oil suitable for a temperature range of-110 DEG C to 320 DEG C, which has low-temperature pumping capacity and high-temperature stability. The product is composed of modified high-level alkanes, and its application covers fine chemical industry, pharmaceutical reaction kettle, chemical fiber spinning equipment and low-temperature experiment, etc. Its composition is mainly based on base oil, and additives such as antioxidants, anti-wear agents, rust inhibitors, etc. are added for different purposes.

[0003] A large amount of wastewater is generated in the production process of low-temperature heat-conducting oil, mainly the wastewater generated by flushing the equipment during the production process. The flushing is mainly for the mixing equipment and the related oil pipeline. In order to ensure that the oil is not contaminated by the residual oil in the last processing, the wastewater generated by flushing contains a large amount of oil and additives. In the prior art, although most of the waste oil and impurities can be separated by the oil separation sedimentation tank, a large amount of suspended particles and emulsified oil in the wastewater cannot be efficiently separated. For this kind of difficult wastewater, we propose a low-temperature heat-conducting oil production wastewater treatment equipment. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a low-temperature heat-conducting oil production wastewater treatment equipment, which solves the problems raised in the background art.

[0005] The purpose of the present application is achieved by a low-temperature heat-conducting oil production wastewater treatment equipment, comprising a tank body, a waste inlet pipe is fixedly connected to the side wall of the tank body, a water outlet pipe is fixedly connected to the middle of the bottom wall of the tank body, an upper ring and a lower ring are respectively fixedly connected to the upper and lower ends of the inner side wall of the tank body, a rotating pipe is further arranged in the tank body, and the upper and lower ends of the rotating pipe are respectively movably connected to the upper ring and the lower ring, the waste inlet pipe is between the upper ring and the lower ring, a plurality of leakage holes are uniformly arranged on the lower ring, and an annular filter screen is laid on the upper surface of the lower ring.

[0006] A filter mechanism is arranged on the outer wall of the rotating pipe for rough filtration of wastewater, a second filter mechanism is arranged on the inner bottom wall of the tank body, and an electrolysis mechanism is further arranged in the tank body for electrolytic treatment of wastewater.

[0007] A driving assembly is fixedly installed on the upper surface of the upper ring for driving the rotating pipe, the water outlet pipe extends upward into the rotating pipe, an annular frame is sleeved on the outer side wall of the water outlet pipe and filled with activated carbon, the limiting ring on the outer wall of the water outlet pipe is in contact with the bottom of the annular frame for limiting, and the annular frame is in the rotating pipe.

[0008] Preferably, the leakage hole is rectangular, and the length direction of the leakage hole points to the axis of the rotating tube, and the upper surface of the annular filter screen is bent up and down at the position corresponding to the leakage hole.

[0009] Preferably, the filter mechanism comprises a spiral frame, a roller, a movable piece, a pull rope, a tension spring, a spiral filter screen and a lever, a plurality of the spiral frames are arranged on the outer side wall of the rotating tube, the bottom end gap of the spiral frame is movably connected with the roller, and the roller is in contact with the bent part of the annular filter screen, the movable piece is movably connected with the spiral frame through a fixed shaft along the direction of the spiral frame, the movable pieces are connected in series through the pull rope, the spiral filter screen is fixedly connected to the surface of the spiral frame, one end of the tension spring is fixedly connected to the bottom wall of the tension spring slot in the spiral frame, the other end of the tension spring is fixedly connected with one end of the pull rope, the other end of the pull rope penetrates through the top wall of the spiral frame and is fixedly connected with the lever, the lever is in contact with the top wall of the spiral frame, the lever is in the shape of "7", the lower surface of the upper ring is fixedly connected with a hanging ring, and the lever can hook the hanging ring to pull the pull rope and drive the movable piece to move.

[0010] Preferably, the spiral filter screen is provided with an outwardly expanding space at the position corresponding to the movable piece, so that the spiral filter screen is attached to the movable piece but does not limit the movement of the movable piece.

[0011] Preferably, one end of the movable piece extends outwardly of the spiral frame, when the tension spring is in a compressed state, the one end of the movable piece is inclined upwardly, and the included angle with the horizontal plane is in the range of 30°-60°.

[0012] Preferably, an electromagnetic valve one is fixedly installed on the side wall of the tank body at a position slightly higher than the annular filter screen, for communicating inside and outside of the tank body to discharge the filtered waste.

[0013] Preferably, the driving assembly comprises a driving motor and bevel gears, the driving motor is installed on the upper ring, and the bevel gears on the output end of the driving motor are engaged with the bevel gears on the outer wall of the rotating tube.

[0014] Preferably, the second filter mechanism comprises a filter frame, a secondary filter screen, a bearing, a rotating ring, an insertion block, a filter screen brush, a waste discharge pipe and an electromagnetic valve two, the filter frame is in the shape of a circular truncated cone, the secondary filter screen is arranged on the outer side wall of the filter frame, the small end of the filter frame is fixedly connected to the inner bottom wall of the tank body and is located outside the water outlet pipe, the top end of the outer wall of the filter frame is movably connected with the rotating ring through a bearing, the insertion block on the upper surface of the rotating ring is inserted into the insertion slot at the bottom end of the rotating tube, the lower surface of the rotating ring is fixedly connected with the filter screen brush, the filter screen brush is inclined to the secondary filter screen and is in contact with the secondary filter screen, the bottom wall of the tank body and outside the filter frame is fixedly connected with the waste discharge pipe and is provided with the electromagnetic valve two.

[0015] Preferably, the electrolysis mechanism comprises a ring-shaped filler frame, a dial ring, a dial wheel, a connecting spring, an electrode filler, an anode plate and a cathode plate, the ring-shaped filler frame is a hollow ring structure, uniformly distributed water leakage holes are formed on the ring-shaped filler frame, the upper surface of the ring-shaped filler frame is connected with the inner bottom wall of the tank body through a plurality of connecting springs, the electrode filler is filled in the ring-shaped filler frame, a plurality of anode plates and a plurality of cathode plates are inserted in the electrode filler, and the anode plates and the cathode plates are arranged alternately, the upper surface of the ring-shaped filler frame is fixedly connected with the dial ring, a plurality of dial wheels arranged at equal distances are arranged on the dial ring, the lower surface of the rotating ring is fixedly connected with a dial rod corresponding to the position of the dial ring, and the bottom end of the dial rod is in contact with the upper surface of the dial ring, and a maintenance window is formed on the side wall of the tank body for maintenance and maintenance of the electrolysis mechanism.

[0016] Preferably, the inner side of the lower surface of the lower ring is fixedly connected with the top end of the material guide ring, the material guide ring is in the shape of a circular truncated cone, the bottom end of the material guide ring extends to the side wall of the tank body, the bottom wall of the tank body is provided with an oil discharge pipe and is provided with an electromagnetic valve three, and the top end of the oil discharge pipe extends to the inner side of the material guide ring and is located outside the filter frame.

[0017] Compared with the prior art, the low-temperature heat conducting oil production wastewater treatment equipment has the advantages that: 1. The low-temperature heat conducting oil production wastewater treatment equipment utilizes the design of the filter mechanism, the ring-shaped filter screen, the second filter mechanism and the electrolysis mechanism, can perform multi-stage treatment on the oil-containing wastewater, and is additionally provided with an electrochemical treatment, so that the emulsified oil and small oil droplets can be efficiently separated, and the problems in the background art are solved.

[0018] 2. The low-temperature heat conducting oil production wastewater treatment equipment utilizes the design of the filter mechanism, cooperates with the ring-shaped filter screen, and drives the spiral frame by the rotating pipe, which can guide the wastewater on one hand, guide the wastewater to the ring-shaped filter screen by the spiral structure, and preliminarily filter the wastewater by the spiral filter screen and the ring-shaped filter screen, and the bending design of the ring-shaped filter screen and the movable piece cooperated with the spiral filter screen can collect the filtered sundries, the hooking ring is pulled up by the hooking of the dial rod, the movable piece is inclined downward, the collected filtered sundries can be released, and the rolling wheel can also drive the movable piece to shake off the sundries when rolling through the bending part of the ring-shaped filter screen, which helps the sundries to quickly pass through the electromagnetic valve one and be discharged from the tank body, the structure is simple, and the low-temperature heat conducting oil production wastewater treatment equipment is suitable for continuous treatment of wastewater, especially wastewater with more sundries in the coarse filtration process.

[0019] 3. The low-temperature heat conducting oil production wastewater treatment equipment utilizes the design of the second filter mechanism, cooperates with the electrolysis mechanism, can perform electrolysis treatment on the wastewater, electrolytically separates the emulsified waste oil, and performs fine filtration on the wastewater by the secondary filter screen, so as to further improve the cleanliness of the wastewater, and the wastewater after fine filtration enters the rotating pipe upward and is further filtered by the activated carbon, so that the oil-containing wastewater can be efficiently treated, and the problems in the background art are solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle.

[0025] Figure 5 For the present invention Figure 2 A magnified view of point C in the middle.

[0026] Figure 6 This is a schematic diagram of the structure of the movable plate and spiral filter screen of the present invention.

[0027] Figure 7 This is a schematic diagram of the structure of the annular filter screen of the present invention.

[0028] In the diagram: 1. Tank; 2. Waste inlet pipe; 3. Water outlet pipe; 4. Upper ring; 5. Lower ring; 6. Rotating pipe; 7. Primary filter mechanism; 71. Spiral frame; 72. Roller; 73. Lever; 74. Movable plate; 75. Pull rope; 76. Tension spring; 77. Spiral filter screen; 8. Secondary filter mechanism; 81. Filter frame; 82. Secondary filter screen; 83. Bearing; 84. Rotating ring; 85. Insert block; 86. Filter brush; 87. Waste discharge pipe; 88. Solenoid valve II; 9. Electrolysis mechanism; 91. 92. Annular packing frame; 93. Actuating ring; 94. Actuating wheel; 95. Connecting spring; 96. Electrode packing; 97. Anode plate; 98. Cathode plate; 10. Leakage hole; 11. Annular filter screen; 12. Drive assembly; 121. Drive motor; 122. Bevel gear; 13. Solenoid valve one; 14. Actuating rod; 15. Inspection window; 16. Guide ring; 17. Oil drain pipe; 18. Solenoid valve three; 19. Annular frame; 20. Limiting ring; 21. Hanging ring; 22. V-shaped elastic mesh frame. Detailed Implementation

[0029] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0030] As shown in Figures 1-7 , the present application provides a technical solution: a low-temperature heat-conducting oil production wastewater treatment equipment, comprising a tank body 1, the side wall of the tank body 1 is fixedly connected with an inlet pipe 2, the bottom wall of the tank body 1 is fixedly connected with a water outlet pipe 3 in the middle, the upper and lower ends of the inner side wall of the tank body 1 are respectively fixedly connected with an upper ring 4 and a lower ring 5, a rotating pipe 6 is further arranged in the tank body 1, and the upper and lower ends of the rotating pipe 6 are respectively movably connected to the upper ring 4 and the lower ring 5, the inlet pipe 2 is between the upper ring 4 and the lower ring 5, the lower ring 5 is provided with uniformly arranged leakage holes 10, and an annular filter screen 11 is laid on the upper surface of the lower ring 5.

[0031] The outer wall of the rotating pipe 6 is provided with a filter mechanism 7 for rough filtration of wastewater, the inner bottom wall of the tank body 1 is provided with a filter mechanism 8, and an electrolysis mechanism 9 is further arranged in the tank body 1 for electrolytic treatment of wastewater.

[0032] The upper surface of the upper ring 4 is fixedly provided with a driving assembly 12 for driving the rotating pipe 6, the water outlet pipe 3 extends upward into the rotating pipe 6, and an annular frame 19 is sleeved on the outer side wall of the water outlet pipe 3 and filled with activated carbon, a limiting ring 20 on the outer wall of the water outlet pipe 3 is in contact with the bottom of the annular frame 19 for limiting, and the annular frame 19 is in the rotating pipe 6, the top of the tank body 1 is provided with a tank cover, and the annular frame 19 is movably sleeved on the water outlet pipe 3, so that the operator can conveniently replace the activated carbon.

[0033] The leakage holes 10 are rectangular, and the length direction of the leakage holes 10 points to the axis of the rotating pipe 6, the upper surface of the annular filter screen 11 is bent up and down at the positions corresponding to the leakage holes 10, as another embodiment, to maintain the shape of the annular filter screen 11, please refer to Figure 7 , a V-shaped elastic net rack 22 is bonded at the position corresponding to the bent part of the bottom of the annular filter screen 11 to maintain the bent state of the annular filter screen 11, when the roller 72 passes, it will press down the bent part of the annular filter screen 11, so that the connection part of each bent position is stretched, the deformation of the annular filter screen 11 can release the filtered sundries, which is helpful for the discharge of waste.

[0034] The filter mechanism 7 comprises a spiral frame 71, a roller 72, a push rod 73, a movable piece 74, a pull rope 75, a tension spring 76 and a spiral filter screen 77. A plurality of spiral frames 71 are arranged on the outer side wall of the rotating pipe 6. The bottom end gap of the spiral frame 71 movably connects the roller 72, and the roller 72 is in contact with the bent part of the annular filter screen 11. The movable piece 74 is movably connected in the spiral frame 71 along the direction thereof through a fixed shaft fixed between the two side walls of the spiral frame 71. The movable piece 74 can rotate about the fixed shaft. The movable pieces 74 are connected in series through the pull rope 75. The spiral filter screen 77 is fixedly connected to the surface of the spiral frame 71. One end of the tension spring 76 is fixedly connected to the groove bottom wall of the inner bottom wall of the spiral frame 71. The other end of the tension spring 76 is fixedly connected to one end of the pull rope 75. The other end of the pull rope 75 penetrates through the top wall of the spiral frame 71 and is fixedly connected to the push rod 73. The push rod 73 is in contact with the top wall of the spiral frame 71. The push rod 73 is in the shape of "7". The lower surface of the upper ring 4 is fixedly connected with a hanging ring 21.

[0035] The spiral filter screen 77 is provided with an outwardly expanding space corresponding to the position of the movable piece 74, so that the spiral filter screen 77 is attached to the movable piece 74 but does not limit the movement of the movable piece 74. Please refer to Figure 7 .

[0036] One end of the movable piece 74 extends outwardly of the spiral frame 71. When the tension spring 76 is in a compressed state, one end of the movable piece 74 is inclined upwardly, and the included angle with the horizontal plane is in the range of 30°-60°. The angle design enables the movable piece 74 to cooperate with the spiral filter screen 77 to collect the filtered sundries. When the push rod 73 passes through the hanging ring 21, it can be hooked to pull the pull rope 75 to drive the movable piece 74 to move, so that the movable piece 74 is rotated to be inclined downwardly, and the collected sundries are released. When the spiral frame 71 continues to rotate away from the hanging ring 21, the push rod 73 can be separated from the hanging ring 21, and the movable piece 74 returns to the state of being inclined upwardly to continue collecting the waste water sundries.

[0037] An electromagnetic valve one 13 is fixedly installed on the side wall of the tank body 1 at a position slightly higher than the annular filter screen 11, for communicating inside and outside of the tank body 1 to discharge the filtered sundries. The electromagnetic valve one 13 is regularly opened and closed to release the filtered sundries in rhythm. Based on the spiral structure of the spiral frame 71, it will push the waste water downwardly to move during the rotation of the rotating pipe 6, to improve the water pressure, to provide and to make the filtered sundries gather on the annular filter screen 11, to help them to be quickly discharged from the tank body 1 through the electromagnetic valve one 13.

[0038] The drive assembly 12 comprises a drive motor 121 and bevel gears 122. The drive motor 121 is installed on the upper ring 4. The bevel gears 122 at the output end of the drive motor 121 are engaged with the bevel gears 122 on the outer wall of the rotating pipe 6.

[0039] The secondary filter mechanism 8 comprises a filter frame 81, a secondary filter screen 82, a bearing 83, a rotating ring 84, an insertion block 85, a filter screen brush 86, a waste discharge pipe 87 and a solenoid valve two 88. The filter frame 81 is in the shape of a circular truncated cone. The secondary filter screen 82 is arranged on the outer sidewall of the filter frame 81. The small end of the filter frame 81 is fixedly connected to the inner bottom wall of the tank body 1 and is located outside the water outlet pipe 3. The top end of the outer wall of the filter frame 81 is movably connected with the rotating ring 84 through the bearing 83. The insertion block 85 on the upper surface of the rotating ring 84 is inserted into the insertion slot at the bottom end of the rotating pipe 6. The rotating ring 84 can rotate with the rotating pipe 6. The lower surface of the rotating ring 84 is fixedly connected with the filter screen brush 86. The filter screen brush 86 is inclined to the secondary filter screen 82 and is in contact with the secondary filter screen 82. The filter screen brush 86 rotates with the rotating ring 84 and can continuously sweep the surface of the secondary filter screen 82 to sweep away the waste filtered out. The bottom wall of the tank body 1 and the outer side of the filter frame 81 are fixedly connected with the waste discharge pipe 87 and are provided with the solenoid valve two 88.

[0040] The electrolysis mechanism 9 comprises an annular filler frame 91, a dial ring 92, a dial wheel 93, a connecting spring 94, an electrode filler 95, an anode plate 96 and a cathode plate 97. The annular filler frame 91 is in a hollow annular structure. Uniformly distributed water leakage holes are formed in the annular filler frame 91. The upper surface of the annular filler frame 91 is connected to the inner bottom wall of the tank body 1 through a plurality of connecting springs 94. The electrode filler 95 is filled in the annular filler frame 91. A plurality of anode plates 96 and a plurality of cathode plates 97 are inserted in the electrode filler 95. The anode plates 96 and the cathode plates 97 are arranged alternately. The anode plates 96 and the cathode plates 97 are all led out from the bottom wall of the tank body 1. The dial ring 92 is fixedly connected to the upper surface of the annular filler frame 91. A plurality of dial wheels 93 are arranged on the dial ring 92 at equal distances. The dial rod 14 is fixedly connected to the lower surface of the rotating ring 84 at a position corresponding to the dial ring 92. The bottom end of the dial rod 14 is in contact with the upper surface of the dial ring 92. A maintenance window 15 is formed in the sidewall of the tank body 1 for the maintenance and repair of the electrolysis mechanism 9.

[0041] The design of the electrolysis mechanism 9 can perform electrochemical treatment on the wastewater. The chemical reaction generated in the electrolysis process can decompose grease molecules to achieve the purpose of purifying water quality. As a known technology, no further description is given.

[0042] Please refer to Figure 2 The top end of the material guide ring 16 is fixedly connected to the inner side of the lower surface of the lower ring 5. The material guide ring 16 is in the shape of a circular truncated cone. The bottom end of the material guide ring 16 extends to the sidewall of the tank body 1. The bottom wall of the tank body 1 is provided with an oil discharge pipe 17 and is provided with a solenoid valve three 18. The top end of the oil discharge pipe 17 extends to the inner side of the material guide ring 16 and is located outside the filter frame 81.

[0043] When the device works, the rotating tube 6 is rotated by the driving motor 121, and the wastewater is injected into the tank 1 from the inlet pipe 2. In the rotating process of the rotating tube 6, the spiral filter screen 77 continuously sweeps the wastewater, and the sundries in the wastewater are filtered and collected in the space formed by the downward inclination of the movable piece 74. At the same time, the wastewater is guided by the spiral frame 71 to flow to the annular filter screen 11, and the sundries are filtered on the slope formed by the bending of the annular filter screen 11. When the lever 73 moves to the position of the hanging ring 21, the lever 73 is hung on the hanging ring 21 and is pulled, the pulling rope 75 is pulled to move the movable piece 74 to the downward inclination, the collected sundries are released, the lever 73 is away from the hanging ring 21, the extension spring 76 is retracted to drive the movable piece 74 to move to the upward inclination through the pulling rope 75, and when the spiral frame 71 moves, the roller 72 is pressed on the corresponding bending of the annular filter screen 11 to be pressed down to shake off the sundries. The electromagnetic valve one 13 is opened and closed rhythmically, and the sundries filtered by the annular filter screen 11 and the spiral filter screen 77 are discharged from the tank 1 through the electromagnetic valve one 13. The wastewater filtered through the annular filter screen 11 and the spiral filter screen 77 enters the lower side of the lower ring 5 through the leakage hole 10, the anode plate 96 and the cathode plate 97 are electrified, the wastewater is guided into the annular filler frame 91 by the guide ring 16, and is subjected to electrolysis treatment. The bubbles generated in the electrolysis process carry the oil droplets to float up and are discharged through the oil discharge pipe 17. The stirring rod 14 stirs the stirring wheel 93 to drive the annular filler frame 91 to shake up and down, the sundries on the electrode filler 95 are shaken off, the sundries on the secondary filter screen 82 are brushed off by the brush 86, the generated precipitated sundries and the sundries filtered by the secondary filter screen 82 are discharged through the waste discharge pipe 87, and the sundries treated for many times enter the rotating tube 6 through the filter frame 81, are filtered by the activated carbon in the annular frame 19, and are discharged through the water outlet pipe 3.

[0044] The above examples are only used to help understand the method of the present application and its core idea. It should be noted that those skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A wastewater treatment device for low-temperature heat transfer oil production, comprising a tank, wherein a waste inlet pipe is fixedly connected to the side wall of the tank, and a water outlet pipe is fixedly connected to the middle of the bottom wall of the tank, characterized in that: The upper and lower ends of the inner sidewall of the tank are fixedly connected to an upper ring and a lower ring, respectively. A rotating tube is also provided inside the tank, and the upper and lower ends of the rotating tube are movably connected to the upper ring and the lower ring, respectively. The waste inlet tube is located between the upper ring and the lower ring. The lower ring has evenly arranged leakage holes, and the upper surface of the lower ring is covered with an annular filter screen. The outer wall of the rotating tube is provided with a filter mechanism for coarse filtration of wastewater, the bottom wall of the tank is provided with a second filter mechanism, and the tank is also provided with an electrolysis mechanism for electrolytic treatment of wastewater. A drive assembly is fixedly installed on the upper surface of the upper ring to drive the rotating tube. The water outlet pipe extends upward into the rotating tube, and an annular frame is fitted onto the outer wall of the water outlet pipe and filled with activated carbon. The limiting ring on the outer wall of the water outlet pipe contacts the bottom of the annular frame for limiting, and the annular frame is located inside the rotating tube.

2. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 1, characterized in that: The leakage hole is rectangular, and the length of the leakage hole points to the axis of the rotating tube. The upper surface of the annular filter screen is bent up and down corresponding to the position of the leakage hole.

3. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 2, characterized in that: The filter mechanism includes a spiral frame, rollers, movable plates, pull ropes, tension springs, a spiral filter screen, and a lever. Several spiral frames are arranged on the outer wall of the rotating tube. A roller is movably connected to the bottom notch of each spiral frame, and the roller contacts the bend of the annular filter screen. Movable plates are movably connected to the spiral frame along its direction via a fixed shaft. Each movable plate is connected in series via a pull rope. A spiral filter screen is fixedly connected to the surface of the spiral frame. One end of a tension spring is fixedly connected to the bottom wall of the tension spring groove in the bottom wall of the spiral frame. The other end of the tension spring is fixedly connected to one end of the pull rope. The other end of the pull rope passes through the top wall of the spiral frame and is fixedly connected to the lever. The lever contacts the top wall of the spiral frame. The lever is in the shape of a "7". A hanging ring is fixedly connected to the lower surface of the upper ring. When the lever passes through the hanging ring, it can hook and pull the pull rope to drive the movable plates to move.

4. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 3, characterized in that: The spiral filter screen has an outward expansion space corresponding to the position of the movable piece, so that the spiral filter screen is attached to the movable piece but does not restrict the movement of the movable piece.

5. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 4, characterized in that: One end of the movable piece extends outward from the spiral frame. When the tension spring is in a compressed state, one end of the movable piece tilts upward, and the angle between it and the horizontal plane is in the range of 30°-60°.

6. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 5, characterized in that: A solenoid valve is fixedly installed on the side wall of the tank, slightly above the position of the annular filter screen, to connect the inside and outside of the tank to discharge filtered waste.

7. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 6, characterized in that: The drive assembly includes a drive motor and a bevel gear. The drive motor is mounted on the upper ring, and the bevel gear at the output end of the drive motor meshes with the bevel gear on the outer wall of the rotating tube.

8. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 7, characterized in that: The secondary filtration mechanism includes a filter frame, a secondary filter screen, a bearing, a rotating ring, a plug, a filter brush, a waste discharge pipe, and a second solenoid valve. The filter frame is frustum-shaped, and the secondary filter screen is located on the outer wall of the filter frame. The small end of the filter frame is fixedly connected to the inner bottom wall of the tank and is located outside the outlet pipe. The top of the outer wall of the filter frame is movably connected to the rotating ring through a bearing. The plug on the upper surface of the rotating ring is inserted into the slot at the bottom end of the rotating pipe. The lower surface of the rotating ring is fixedly connected to the filter brush, which is inclined towards and in contact with the secondary filter screen. The bottom wall of the tank, located outside the filter frame, is fixedly connected to the waste discharge pipe and equipped with a second solenoid valve.

9. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 8, characterized in that: The electrolysis mechanism includes an annular packing frame, a deflecting ring, deflecting wheels, connecting springs, electrode packing, anode plates, and cathode plates. The annular packing frame is a hollow annular structure with evenly distributed drainage holes. The upper surface of the annular packing frame is connected to the bottom wall of the tank through several connecting springs. The electrode packing is filled inside the annular packing frame, and several anode plates and several cathode plates are interspersed in the electrode packing, with the anode plates and cathode plates arranged alternately. A deflecting ring is fixedly connected to the upper surface of the annular packing frame, and several deflecting wheels are arranged at equal intervals on the deflecting ring. A deflecting rod is fixedly connected to the lower surface of the rotating ring at the position corresponding to the deflecting ring, and the bottom end of the deflecting rod contacts the upper surface of the deflecting ring. An inspection window is provided on the side wall of the tank for the inspection and maintenance of the electrolysis mechanism.

10. The low-temperature heat transfer oil production wastewater treatment equipment according to claim 9, characterized in that: The bottom of the lower ring is fixedly connected to the top of the guide ring. The guide ring is frustum-shaped and its bottom end extends toward the side wall of the tank. The bottom wall of the tank is provided with an oil drain pipe and equipped with a solenoid valve. The top of the oil drain pipe extends to the inside of the guide ring and is located outside the filter frame.

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