Disinfection device and disinfection method for petroleum wastewater treatment

Abstract

The invention discloses a disinfection device and a disinfection method for petroleum wastewater treatment, and belongs to the technical field of petroleum wastewater treatment. The problems that in the disinfectant solution preparation process of an existing disinfection device, disinfectant powder cannot be fully dissolved well, part of the powder is likely to be bonded to the device and is not completely dissolved into water, and therefore the concentration of the prepared disinfectant solution is not accurate enough are solved. The disinfection device for petroleum wastewater treatment comprises a water pipe and the like, storage boxes are fixedly connected to the lower portions of the two sides of the water pipe, a liquid changing mechanism is arranged on a shell, and a pushing mechanism is arranged on the liquid changing mechanism. An operator starts a double-shaft motor, so that two hollow pipes and a rotating frame rotate, a part of petroleum wastewater is brought into a shell, then the petroleum wastewater flowing in a water pipe drives an impeller to rotate, a disinfectant solution in the shell is stirred, and disinfectant powder is dissolved more fully.

Description

Technical Field

[0001] The invention relates to the field of petroleum wastewater treatment, and in particular to a disinfection device and a disinfection method for petroleum wastewater treatment. Background Art

[0002] Petroleum wastewater refers to industrial wastewater discharged by petrochemical plants when producing petroleum. The nature of petroleum wastewater is complex and changeable, so it needs to go through multiple processes to purify the wastewater. Nowadays, the water quality of petroleum wastewater has been improved after secondary treatment, but the absolute number of bacteria and pathogens is still very objective. In order to remove microorganisms in petroleum wastewater, chlorine dioxide disinfectant is needed to disinfect the petroleum wastewater. Chlorine dioxide disinfectant is generally prepared and used immediately, and the main preparation method is to add the required amount of water to the container, and then add the required amount of powder. After the powder is completely dissolved, the disinfectant solution is obtained, and then the prepared disinfectant solution is added to the petroleum wastewater.

[0003] However, the existing disinfection device cannot fully dissolve the disinfectant powder during the preparation of the disinfectant solution, and it is easy for part of the powder to stick to the device and not be completely dissolved in the water, so that the concentration of the prepared disinfectant solution is not accurate enough. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned deficiencies of the prior art and to provide a disinfection device and a disinfection method for treating petroleum wastewater, which can make the disinfectant powder dissolve more fully and the concentration of the configured disinfectant solution more accurate.

[0005] A disinfection device and method for treating petroleum wastewater, comprising a water pipe, a shell being fixedly connected to the lower portion of the water pipe, storage boxes being fixedly connected to the lower portions of both sides of the water pipe, a liquid changing mechanism being provided on the shell, the liquid changing mechanism being used to replace a prepared disinfectant solution into the wastewater, a pushing mechanism being provided on the liquid changing mechanism, the pushing mechanism being used to push the disinfectant powder in the storage box into the shell, a mixing mechanism being provided on the liquid changing mechanism, the mixing mechanism being used to mix the disinfectant powder with part of the petroleum wastewater, the mixing mechanism stirring the disinfectant solution in the shell so that the disinfectant powder is dissolved more fully, and a feeding mechanism being provided inside the rotating frame, the feeding mechanism being used to add the powder in the storage box into the shell.

[0006] In one embodiment, the liquid changing mechanism includes two hollow tubes, the two storage boxes are rotatably connected to both sides of the shell, a rotating frame is fixedly connected between the two hollow tubes, a dual-axis motor is fixedly connected to the lower surface of the shell, and two output shafts of the dual-axis motor are respectively connected to transmission components between the two hollow tubes.

[0007] In one embodiment, the transmission assembly includes a transmission wheel 1, a transmission wheel 2 and a belt. The two transmission wheels 1 are respectively fixedly connected to the two hollow tubes, the two transmission wheels 2 are respectively fixedly connected to the two output shafts of the dual-axis motor, and a belt is wound between the transmission wheels 1 and 2.

[0008] In one embodiment, the pushing mechanism includes two transverse axis swing plates, which are rotatably connected to the side of the storage box close to the hollow tube, and fan gears are fixedly connected to the upper sides of each of the transverse axis swing plates. Two guide rails are fixedly connected to the side of each storage box close to the hollow tube, and a rack rack is slidably connected between the two guide rails on the same side. Each rack rack is meshed with the two fan gears on the same side, and two return springs are connected between each rack rack and the storage box on the same side. A cam is fixedly connected to each of the hollow tubes, and the cam is in contact with one side of the rack rack.

[0009] In one embodiment, the mixing mechanism includes a vertical shaft, the vertical shaft is rotatably connected to the middle of the rotating frame, and both ends of the vertical shaft are fixedly connected to impellers.

[0010] In one embodiment, the feeding mechanism includes a cavity one, and the cavity one is arranged in the middle of the rotating frame. Two planetary gear reduction assemblies are fixedly connected to the inner wall of the cavity one, and screw conveying shafts are rotatably connected in the two hollow tubes. A bevel gear assembly is connected between the input shafts of the two planetary gear reduction assemblies and the vertical shaft, and the output shafts of the two planetary gear reduction assemblies are respectively connected to the two screw conveying shafts.

[0011] In one embodiment, the bevel gear assembly includes bevel gear 1, bevel gear 2 and bevel gear 3. Bevel gear 1 and bevel gear 2 are respectively fixedly connected to the two spiral conveying shafts, bevel gear 3 is fixedly connected to the vertical shaft, and bevel gear 1 and bevel gear 2 are both meshed with bevel gear 3.

[0012] In one of the embodiments, a scraping mechanism is also included, which is used to scrape off the disinfectant powder that may be stuck in the rotating frame. The scraping mechanism is arranged inside the rotating frame, and the scraping mechanism includes four cavity twos, and the four cavity twos are all arranged in the middle of the rotating frame. There are two movable blocks slidably connected inside the rotating frame, and the movable blocks are located in the blanking trough of the rotating frame. A sliding groove is opened in the middle of the movable blocks, and each of the movable blocks is fixedly connected with a driven rack on both sides, and each of the cavity two is rotatably connected with a column gear. A counterweight rack is slidably connected to the inner wall of each cavity two, and the driven rack and the counterweight rack are both meshed with the column gear.

[0013] In one of the embodiments, there are two baffles, which are respectively slidably connected to one end of the two hollow tubes close to the bevel gear assembly, and a square groove is opened in the middle of the baffle.

[0014] A method for disinfecting a disinfection device for treating petroleum wastewater comprises the following steps:

[0015] S1. First, connect the two ends of the water pipe so that the petroleum wastewater continuously flows in from one side of the water pipe and flows out from the other side of the water pipe;

[0016] S2, start the double-shaft motor, and the two output shafts of the double-shaft motor drive the two hollow tubes and the rotating frame to rotate 180 degrees through the transmission assembly, bringing a part of the petroleum wastewater into the shell;

[0017] S3, adding disinfectant A powder and B powder into two storage boxes respectively, pushing the disinfectant A powder and B powder in the two hollow tubes into the shell through the rotation of two spiral conveying shafts, and configuring them together with a part of the petroleum wastewater in the shell into a disinfectant solution;

[0018] S4. Start the dual-axis motor again. The two output shaft transmission components of the dual-axis motor drive the two hollow tubes and the rotating frame to rotate 180 degrees again, bringing the configured disinfectant solution into the petroleum wastewater flowing in the water pipe, thereby completing the disinfection of the petroleum wastewater.

[0019] Beneficial effects: 1. The operator starts the dual-axis motor, and the two output shafts of the dual-axis motor drive the two hollow tubes to rotate 180° through the transmission assembly. Then the dual-axis motor is turned off, and the rotation of the two hollow tubes will drive the rotating frame to rotate 180°. The rotation of the rotating frame 180° will bring part of the petroleum wastewater into the shell. Then the operator adds disinfectant A powder and B powder into the two storage boxes respectively, and the two disinfectant powders fall from the storage boxes into the two hollow tubes respectively. Then the petroleum wastewater flowing in the water pipe will drive one of the impellers to rotate, and the rotation of one of the impellers will drive the vertical shaft to rotate, and the rotation of the vertical shaft will pass through the bevel gear set. The components drive the input shafts of the two planetary gear reduction assemblies to rotate, and then through the deceleration effect of the two planetary gear reduction assemblies, the output shafts of the two planetary gear reduction assemblies drive the two spiral conveying shafts to rotate slowly. The rotation of the two spiral conveying shafts pushes the disinfectant A powder and B powder in the two hollow tubes into the shell, and together with a part of the petroleum wastewater in the shell, they are configured into a disinfectant solution. Then, the rotation of one of the impellers will drive the other impeller to rotate synchronously through the vertical axis, so that the other impeller stirs the solution in the shell, speeds up the configuration speed of the solution, and also allows the disinfectant A powder and B powder to be more fully dissolved.

[0020] 2. After the rotating frame rotates 180°, the counterweight rack will slide from top to bottom due to gravity, and drive the driven rack to slide from bottom to top through the column gear. The sliding of the driven rack will drive the movable block to slide from bottom to top. The sliding of the movable block can scrape off the powder that may be adhered to the inner wall of the rotating frame, thereby making the concentration of the configured disinfectant solution more accurate.

[0021] 3. Due to gravity, the baffle will always isolate the discharge port at one end of the hollow tube close to the bevel gear assembly from the chute in the middle of the movable block when the rotating frame and the hollow tube rotate 180°, so that the powder in the hollow tube will not fall into the chute in the middle of the movable block, thereby preventing the concentration of the configured disinfectant from being inaccurate due to part of the powder not being dissolved in the petroleum wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0024] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged three-dimensional structure at point A in the middle.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the material pushing mechanism of the present invention.

[0026] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0027] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged three-dimensional structure at point B in the middle.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the feeding mechanism of the present invention.

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the liquid changing mechanism of the present invention.

[0031] Fig.10 It is a three-dimensional structural schematic diagram of the scraping mechanism of the present invention.

[0032] Fig.11 It is a schematic diagram of the separated three-dimensional structure of the feeding mechanism of the present invention.

[0033] Markings in the figure are: 1-water pipe, 11-shell, 12-storage box, 21-hollow tube, 22-rotating frame, 23-dual-axis motor, 24-transmission assembly, 31-horizontal axis swing plate, 32-sector gear, 33-guide rail, 34-rack rack, 35-reset spring, 36-cam, 41-vertical axis, 42-impeller, 511-cavity one, 51-planetary gear reduction assembly, 52-screw conveyor shaft, 53-bevel gear assembly, 61-cavity two, 62-movable block, 63-driven rack, 64-column gear, 65-counterweight rack, 7-baffle. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0035] Embodiment 1: A disinfection device and disinfection method for treating petroleum wastewater, such as Figure 1-Figure 11 As shown, it includes a water pipe 1, the lower part of the water pipe 1 is fixedly connected to a shell 11, the lower parts of both sides of the water pipe 1 are fixedly connected to storage boxes 12, the shell 11 is provided with a liquid changing mechanism, the liquid changing mechanism is used to replace the configured disinfectant solution into the wastewater, the liquid changing mechanism is provided with a pushing mechanism, the pushing mechanism is used to push the disinfectant powder in the storage box 12 into the shell 11, the liquid changing mechanism is provided with a mixing mechanism, the mixing mechanism is used to mix the disinfectant powder and part of the petroleum wastewater, the mixing mechanism stirs the disinfectant solution in the shell 11, so that the disinfectant powder is dissolved more fully.

[0036] The liquid changing mechanism includes two hollow tubes 21, and the hollow tubes 21 are rotatably connected between the two storage boxes 12 and the two sides of the shell 11. A rotating frame 22 is fixedly connected between the two hollow tubes 21. The rotating frame 22 is used to rotate 180° to bring petroleum wastewater into the shell 11, and to bring the disinfectant solution configured in the shell 11 out of the shell 11. Two material dropping grooves are formed on the rotating frame 22, and a dual-axis motor 23 is fixedly connected to the lower surface of the shell 11. The two output shafts of the dual-axis motor 23 are respectively connected to the two hollow tubes 21 with a transmission assembly 24.

[0037] The transmission assembly 24 includes a transmission wheel 1, a transmission wheel 2 and a belt. The two transmission wheels 1 are respectively fixedly connected to the two hollow tubes 21, and the two transmission wheels 2 are respectively fixedly connected to the two output shafts of the dual-axis motor 23. A belt is wound between the transmission wheels 1 and 2.

[0038] The pushing mechanism includes two transverse swing plates 31, which are rotatably connected to one side of the storage box 12 close to the hollow tube 21. The transverse swing plates 31 are used to swing back and forth to push the powder into the hollow tube 21. Fan gears 32 are fixedly connected to both sides of the upper part of each transverse swing plate 31, and two guide rails 33 are fixedly connected to one side of each storage box 12 close to the hollow tube 21. A rack rack 34 is slidably connected between the two guide rails 33 on the same side, and each rack rack 34 is meshed with the two fan gears 32 on the same side. Two return springs 35 are connected between each rack rack 34 and the storage box 12 on the same side. A cam 36 is fixedly connected to each hollow tube 21, and the cam 36 contacts one side of the rack rack 34.

[0039] The mixing mechanism includes a vertical shaft 41, which is rotatably connected to the middle of the rotating frame 22. Impellers 42 are fixedly connected to both ends of the vertical shaft 41, and the upper impeller 42 is used to be impacted by the flowing petroleum wastewater to drive the other impeller 42 below to rotate and stir the disinfectant solution in the shell 11.

[0040] The feeding mechanism includes a cavity 511, and the cavity 511 is arranged in the middle of the rotating frame 22. Two planetary gear reduction assemblies 51 are fixedly connected to the inner wall of the cavity 511. A screw conveying shaft 52 is rotatably connected in the two hollow tubes 21. A bevel gear assembly 53 is connected between the input shafts of the two planetary gear reduction assemblies 51 and the vertical shaft 41. The output shafts of the two planetary gear reduction assemblies 51 are respectively connected to the two screw conveying shafts 52. The screw conveying shafts 52 are used to slowly rotate and push the powder into the shell 11.

[0041] The bevel gear assembly 53 includes bevel gear 1, bevel gear 2 and bevel gear 3. Bevel gear 1 and bevel gear 2 are respectively fixedly connected to the two screw conveying shafts 52, and bevel gear 3 is fixedly connected to the vertical shaft 41. Bevel gear 1 and bevel gear 2 are both meshed with bevel gear 3.

[0042] In actual work, the configuration of the disinfectant solution requires adding disinfectant A powder and B powder into water together, and then mixing them to obtain a disinfectant solution, and then adding the disinfectant solution into the wastewater to be treated for disinfection. When petroleum wastewater needs to be disinfected, the operator first connects the two ends of the water pipe 1 so that the petroleum wastewater continuously flows in from one side of the water pipe 1 and flows out from the other side of the water pipe 1, and then flows into the water reservoir. Then the operator starts the dual-axis motor 23, and the two output shafts of the dual-axis motor 23 drive the two hollow tubes 21 to rotate 180° through the transmission assembly 24. Then the dual-axis motor 23 is turned off, and the rotation of the two hollow tubes 21 will drive the rotating frame 22 to rotate 180°. The rotating frame 22 rotates 180°. 0° will bring a part of the petroleum wastewater into the shell 11, and then the operator will add the disinfectant A powder and B powder into the two storage boxes 12 respectively, and the two disinfectant powders will fall from the storage boxes 12 into the two hollow tubes 21 respectively, and then the petroleum wastewater flowing in the water pipe 1 will drive one of the impellers 42 to rotate, and the rotation of one of the impellers 42 will drive the vertical shaft 41 to rotate, and the rotation of the vertical shaft 41 will drive the input shafts of the two planetary gear reduction assemblies 51 to rotate through the bevel gear assembly 53, and then through the deceleration effect of the two planetary gear reduction assemblies 51, the output shafts of the two planetary gear reduction assemblies 51 drive the two spiral conveying shafts 52 to rotate slowly, and the rotation of the two spiral conveying shafts 52 will drive the two hollow The disinfectant powder A and powder B in the tube 21 are pushed into the shell 11 and configured into a disinfectant solution together with a portion of the petroleum wastewater in the shell 11. Then, the rotation of one of the impellers 42 will drive the other impeller 42 to rotate synchronously through the vertical shaft 41, so that the other impeller 42 stirs the solution in the shell 11, speeds up the configuration of the solution, and also enables the disinfectant powder A and powder B to be more fully dissolved. When the disinfectant solution is fully stirred and after a certain period of time, the operator starts the dual-axis motor 23 again to drive the rotating frame 22 to rotate 180°, bringing the disinfectant solution that has been configured in the shell 11 into the water pipe 1, and mixing the disinfectant solution into the petroleum wastewater to disinfect the petroleum wastewater. After the operator starts the dual-axis motor 23 again, the two output shafts of the dual-axis motor 23 drive the two hollow tubes 21 to rotate 180° through the transmission assembly 24. The rotation of the hollow tube 21 by 180° will drive the cam 36 to rotate 180°. The rotation of the cam 36 will first squeeze the rack 34 to move horizontally, the reset spring 35 is compressed, and then the cam 36 continues to rotate, and the rack 34 will move horizontally in the opposite direction to reset. The horizontal movement and reset of the rack 34 will drive the sector gear 32 and the horizontal axis swing plate 31 to swing and reset. The swinging and resetting of the horizontal axis swing plate 31 will transfer the powder in the storage box 12 into the hollow tube 21, and the powder will be pushed into the shell 11 through the rotation of the spiral conveying shaft 52 again to configure the disinfectant solution.

[0043] Embodiment 2: Based on embodiment 1, Fig.10 and Fig.11 As shown, it also includes a scraping mechanism, which is used to scrape off the disinfectant powder that may be adhered to the rotating frame 22. The scraping mechanism is arranged inside the rotating frame 22. The scraping mechanism includes four cavity twos 61, and the four cavity twos 61 are all arranged in the middle of the rotating frame 22. Two movable blocks 62 are slidably connected inside the rotating frame 22. The movable blocks 62 are located in the blanking trough of the rotating frame 22. The movable blocks 62 are used to slide up and down to scrape off the powder adhered to the inner wall of the blanking trough of the rotating frame 22. A sliding groove is opened in the middle of the movable blocks 62. A driven rack 63 is fixedly connected to both sides of each of the movable blocks 62. Each of the cavity twos 61 is rotatably connected to a column gear 64. A counterweight rack 65 is slidably connected to the inner wall of each of the cavity twos 61, and the driven rack 63 and the counterweight rack 65 are both meshed with the column gear 64.

[0044] After the rotating frame 22 rotates 180°, the counterweight rack 65 will slide from top to bottom due to gravity, and drive the driven rack 63 to slide from bottom to top through the column gear 64. The sliding of the driven rack 63 will drive the movable block 62 to slide from bottom to top. The sliding of the movable block 62 can scrape off the powder that may be adhered to the inner wall of the rotating frame 22, thereby making the concentration of the configured disinfectant solution more accurate.

[0045] Embodiment 3: Based on embodiment 2, Figure 6 and Figure 7 As shown, two baffles 7 are also included. The two baffles 7 are respectively slidably connected to one end of the two hollow tubes 21 close to the bevel gear assembly 53, and a square groove is opened in the middle of the baffle 7.

[0046] Due to gravity, the baffle 7 will always isolate the discharge port at one end of the hollow tube 21 close to the bevel gear assembly 53 from the chute in the middle of the movable block 62 when the rotating frame 22 and the hollow tube 21 rotate 180°, so that the powder in the hollow tube 21 will not fall into the chute in the middle of the movable block 62, thereby preventing the concentration of the configured disinfectant from being inaccurate due to part of the powder not being dissolved in the petroleum wastewater.

[0047] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A disinfection device for treating petroleum wastewater, characterized in that: The invention comprises a water pipe (1), the lower part of which is fixedly connected to a shell (11), the lower parts of both sides of the water pipe (1) are fixedly connected to storage boxes (12), the shell (11) is provided with a liquid replacement mechanism, the liquid replacement mechanism is used to replace the prepared disinfectant solution into the wastewater, the liquid replacement mechanism is provided with a pushing mechanism, the pushing mechanism is used to push the disinfectant powder in the storage box (12) into the shell (11), the liquid replacement mechanism is provided with a mixing mechanism, the mixing mechanism is used to mix the disinfectant powder with part of the petroleum wastewater, and the mixing mechanism stirs the disinfectant solution in the shell (11) so that the disinfectant powder is dissolved more fully.

2. A disinfection device for treating petroleum wastewater as claimed in claim 1, characterized in that: The liquid replacement mechanism comprises two hollow tubes (21), the two storage boxes (12) are rotatably connected to the two sides of the shell (11), a rotating frame (22) is fixedly connected between the two hollow tubes (21), two material dropping grooves are provided on the rotating frame (22), a double-axis motor (23) is fixedly connected to the lower surface of the shell (11), and two output shafts of the double-axis motor (23) are respectively connected to the two hollow tubes (21) with a transmission assembly (24), and a feeding mechanism is arranged inside the rotating frame (22), and the feeding mechanism is used to add the powder in the storage box (12) into the shell (11).

3. A disinfection device for treating petroleum wastewater as claimed in claim 2, characterized in that: The transmission assembly (24) comprises a transmission wheel 1, a transmission wheel 2 and a belt. The two transmission wheels 1 are respectively fixedly connected to the two hollow tubes (21), the two transmission wheels 2 are respectively fixedly connected to the two output shafts of the dual-axis motor (23), and a belt is wound between the transmission wheels 1 and 2.

4. A disinfection device for treating petroleum wastewater as claimed in claim 3, characterized in that: The pushing mechanism comprises two transverse axis swing plates (31), the transverse axis swing plates (31) are rotatably connected to one side of the material storage box (12) close to the hollow tube (21), and both sides of the upper part of each of the transverse axis swing plates (31) are fixedly connected with fan gears (32), and each of the material storage boxes (12) is fixedly connected with two guide rails (33) on one side close to the hollow tube (21), and a rack rack (34) is slidably connected between the two guide rails (33) on the same side, and each of the rack racks (34) is meshed with the two fan gears (32) on the same side, and two return springs (35) are connected between each of the rack racks (34) and the material storage box (12) on the same side, and each of the hollow tubes (21) is fixedly connected with a convex plate (36), and the convex plate (36) contacts one side of the rack rack (34).

5. A disinfection device for treating petroleum wastewater as claimed in claim 4, characterized in that: The mixing mechanism comprises a vertical shaft (41), the vertical shaft (41) is rotatably connected to the middle of the rotating frame (22), and both ends of the vertical shaft (41) are fixedly connected to impellers (42).

6. A disinfection device for treating petroleum wastewater as claimed in claim 5, characterized in that: The feeding mechanism comprises a cavity (511), the cavity (511) is arranged in the middle of the rotating frame (22), two planetary gear reduction assemblies (51) are fixedly connected to the inner wall of the cavity (511), a screw conveying shaft (52) is rotatably connected in the two hollow tubes (21), a bevel gear assembly (53) is connected between the input shafts of the two planetary gear reduction assemblies (51) and the vertical shaft (41), and the output shafts of the two planetary gear reduction assemblies (51) are respectively connected to the two screw conveying shafts (52).

7. A disinfection device for treating petroleum wastewater as claimed in claim 6, characterized in that: The bevel gear assembly (53) comprises bevel gear 1, bevel gear 2 and bevel gear 3. Bevel gear 1 and bevel gear 2 are respectively fixedly connected to the two screw conveying shafts (52), and bevel gear 3 is fixedly connected to the vertical shaft (41). Bevel gear 1 and bevel gear 2 are both meshed with bevel gear 3.

8. A disinfection device for treating petroleum wastewater as claimed in claim 7, characterized in that: The utility model also comprises a scraping mechanism, wherein the scraping mechanism is used for scraping off the disinfectant powder that may be adhered in the rotating frame (22), and the scraping mechanism is arranged inside the rotating frame (22), and the scraping mechanism comprises four cavity bodies (61), and the four cavity bodies (61) are all arranged in the middle of the rotating frame (22), and two movable blocks (62) are slidably connected inside the rotating frame (22), and the movable blocks (62) are located in the drop groove of the rotating frame (22), and a sliding groove is opened in the middle of the movable blocks (62), and each of the movable blocks (62) is fixedly connected with a driven rack (63) on both sides, and each of the cavity bodies (61) is rotatably connected with a column gear (64), and a counterweight rack (65) is slidably connected on the inner wall of each of the cavity bodies (61), and the driven rack (63) and the counterweight rack (65) are both meshed with the column gear (64).

9. A disinfection device for treating petroleum wastewater as claimed in claim 8, characterized in that: It also includes two baffles (7), which are respectively slidably connected to one end of the two hollow tubes (21) close to the bevel gear assembly (53), and a square groove is opened in the middle of the baffle (7).

10. The disinfection method of a disinfection device for treating petroleum wastewater according to claim 9, characterized in that: The following steps are involved: S1, first connect the two ends of the water pipe (1) so that the petroleum wastewater continuously flows into the water pipe (1) from one side and flows out from the other side of the water pipe (1); S2, starting the dual-shaft motor (23), the two output shafts of the dual-shaft motor (23) drive the two hollow tubes (21) and the rotating frame (22) to rotate 180 degrees through the transmission assembly (24), and bring a part of the petroleum wastewater into the housing (11); S3, adding disinfectant A powder and B powder into the two storage boxes (12) respectively, pushing the disinfectant A powder and B powder in the two hollow tubes (21) into the housing (11) by rotating the two spiral conveying shafts (52), and configuring the disinfectant solution together with a portion of the petroleum wastewater in the housing (11); S4, the dual-axis motor (23) is started again, and the two output shaft transmission components (24) of the dual-axis motor (23) drive the two hollow tubes (21) and the rotating frame (22) to rotate 180 degrees again, bringing the prepared disinfectant solution into the petroleum wastewater flowing in the water pipe (1), thereby completing the disinfection of the petroleum wastewater.

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