An oil-water separation system for treating needle coke wastewater

Abstract

The present invention relates to the technical field of needle coke wastewater treatment, and specifically relates to an oil-water separation system for needle coke wastewater treatment, which includes a separation tank. A tank cover is slidably installed on the upper side of the separation tank. A rotation hole is opened on the upper side of the tank cover, and a separation mechanism is rotatably installed in the rotation hole. A cross bar is fixedly installed on the side of the hollow column. Two scraping plates are fixedly installed on the lower side of the cross bar. A medicine injection assembly is fixedly installed in the air injection hole, and the air injection hole is fixedly connected to a stirring pipe. In the present invention, the driving motor drives the secondary bevel gear to rotate, the secondary bevel gear drives the primary bevel gear to rotate, the primary bevel gear drives the secondary bevel gear to rotate, the secondary bevel gear drives the hollow column to rotate, and the hollow column drives the primary ratchet pawl to move, so that the primary ratchet pawl moves clockwise, enabling it to be fully mixed and demulsified, thereby increasing the effect of oil-water separation.

Description

Technical Field

[0001] The present invention relates to the technical field of needle coke wastewater treatment, and specifically to an oil-water separation system for needle coke wastewater treatment. Background Technique

[0002] Needle coke wastewater is the wastewater generated during the production process of needle coke carbon materials. The needle coke wastewater contains a large amount of oil stains, which cannot be decomposed normally by nature. Direct discharge will have a huge impact on the environment. Therefore, it is necessary to carry out oil-water separation treatment on it. When carrying out oil-water separation treatment, an oil-water separation device is required.

[0003] Chinese Utility Model Patent CN215975256U discloses an oil-water separation device for treating oily wastewater, including a separation tank. The lower end surface of the separation tank is fixedly connected with a fixed column, the lower end surface of the fixed column is welded with a chassis, the upper end surface of the chassis is provided with a threaded hole, an adjusting rod is threadedly connected inside the threaded hole, the lower end surface of the adjusting rod is fixedly connected with a support seat, universal wheels are installed at the four corners of the lower end surface of the chassis, and the upper and lower end surfaces of the separation tank are respectively communicated with an oil discharge pipe and a sewage discharge pipe. This oil-water separation device for treating oily wastewater is provided with universal wheels, an adjusting rod and a support seat, and their mutual cooperation is convenient for the mobile transportation of the oil-water separation device. Moreover, the whole device is of an integrated design, making it flexible and changeable during use. When it is necessary to fix the oil-water separation device, rotate the adjusting rod to make the support seat move down and support on the ground, greatly improving the practicability of the oil-water separation device.

[0004] However, this device still has some problems. Among them, the oil and water flow into the separation tank through a flow pipe for separation. After separation, the oil liquid floats on the upper layer of the sewage, and the fine impurities in the oil and water precipitate at the bottom of the separation tank to complete the oil-water separation. This separation method only relies on gravity for stratification. Although the upper oil layer is separated, there is still an emulsified oil layer in the needle coke wastewater. The emulsified oil layer refers to the formation of tiny oil droplets between the oil and water. These oil droplets are evenly dispersed in the water to form an emulsion. These emulsified oil layers cannot be separated by gravity alone, resulting in incomplete oil-water separation. Therefore, it is necessary to treat the emulsified oil layer to achieve oil-water separation. Summary of the Invention

[0005] The purpose of the present invention is to provide an oil-water separation system for needle coke wastewater treatment to solve the problem proposed in the above background technique that relying on gravity for stratification, although the upper oil layer is separated, there are a large number of emulsified oil-water mixtures in the needle coke wastewater, and these emulsified oils cannot be separated by this method, resulting in incomplete oil-water separation.

[0006] The technical solution of the present invention is: an oil-water separation system for treating needle coke wastewater, including a separation tank, a tank cover is slidably installed on the upper side of the separation tank, a rotation hole is opened on the upper side of the tank cover, and a separation mechanism is rotatably installed in the rotation hole;

[0007] The separation mechanism includes a hollow column, the upper part of the hollow column is rotatably installed in the rotation hole, a plurality of air injection holes are opened on the surface of the hollow column, a cross bar is fixedly installed on the side of the hollow column, a scraper is fixedly installed on the lower side of the cross bar, a medicine injection component is fixedly installed in the air injection hole, the air injection holes are all fixedly connected with stirring pipes, and each medicine injection component is arranged in the corresponding stirring pipe. A filtering component is installed in the separation tank, and the filtering component is located below the stirring pipe;

[0008] The filtering component includes a partition plate, the partition plate is rotatably installed in the separation tank, a plurality of water drainage holes are opened on the surface of the partition plate, a movable plate is rotatably installed on the lower side of the partition plate, and a blocking part corresponding to the water drainage hole one by one is arranged on the movable plate. When the blocking part is aligned with the water drainage hole, the water drainage hole is closed. A plurality of limiting pieces are fixedly installed on the lower side of the partition plate, a transmission unit is fixedly installed on the upper side of the movable plate, an oil-water separation net is fixedly installed on the inner wall of the separation tank, two sliding grooves are opened on the inner wall of the separation tank, and a vibration unit is slidably installed in the two sliding grooves. A particle filter screen is installed between the two vibration units.

[0009] Further, the medicine injection component includes a plurality of spray nozzles opened on the surface of the stirring pipe, a fixed block is fixedly installed on the inner wall of the stirring pipe, a telescopic rod is fixedly installed on the upper side of the fixed block, an anti-backflow cover is fixedly installed at the top of the telescopic rod, a return spring is sleeved on the surface of the telescopic rod, a plurality of support rods are fixedly installed on the upper side of the tank cover, and the same vacuum tank is fixedly installed at the top of the plurality of support rods. A piston is slidably installed on the inner wall of the vacuum tank, a suction port is opened on one side of the vacuum tank, the suction port is fixedly connected with a suction pipe, a one-way valve is installed on the suction pipe, a reagent tank is fixedly installed on the upper side of the vacuum tank, a feeding hole is opened on one side of the reagent tank, the other end of the suction pipe is communicated with the feeding hole, an adding port is opened on the upper side of the reagent tank, a discharge port is opened on one side of the vacuum tank, the discharge port is fixedly connected with a conveying pipe, a one-way valve is fixedly installed on the conveying pipe, the other end of the conveying pipe is rotatably connected with the top end of the hollow column, and a driving unit is fixedly installed on one side of the piston.

[0010] Further, the driving unit includes a first-stage ratchet, the first-stage ratchet is rotatably installed on the surface of the hollow column, a first-stage compression spring is arranged between the first-stage ratchet and the hollow column, a first-stage gear is rotatably installed on the upper side of the tank cover, and a plurality of first-stage ratchet teeth are arranged at intervals on the inner wall of the first-stage gear.

[0011] Further, the driving unit further includes a secondary gear rotatably installed on the upper side of the separation box. The secondary gear meshes with the primary gear. A driving column is fixedly installed on the upper side of the secondary gear. One side of the piston is rotatably installed with a driving rod. A sliding groove is formed on the surface of the driving rod, and the driving column is slidably installed in the sliding groove.

[0012] Further, the driving unit further includes a primary bevel gear fixedly installed on the surface of the hollow column. A driving motor is fixedly installed on the upper side of the box cover. The output end of the driving motor is fixedly installed with a secondary bevel gear, and the primary bevel gear meshes with the secondary bevel gear.

[0013] Further, the transmission unit includes a torsion spring shaft fixedly installed on the upper side of the movable plate. A primary avoidance opening is formed on the partition plate. A connecting block is fixedly installed at the top of the torsion spring shaft. A clamping block is fixedly installed at the bottom end of the hollow column. A rotating rod is slidably installed on the lower side of the clamping block. A clamping groove is formed at the top end of the rotating rod, and the clamping block can slidably extend into the clamping groove. An installation groove is formed at the bottom end of the rotating rod, and the top of the connecting block is rotatably installed in the installation groove. A secondary ratchet pawl is rotatably installed at the top end of the torsion spring shaft. Secondary ratchet teeth are formed on the inner wall of the installation groove. A secondary compression spring is arranged between the secondary ratchet pawl and the connecting block.

[0014] Further, the vibration unit includes two bearing blocks respectively slidably installed in the two sliding grooves. Positioning columns are fixedly installed on the upper sides of the bearing blocks. The particle filter screen is slidably installed on the surfaces of the positioning columns. Secondary avoidance holes matching the positioning columns are formed on the surface of the particle filter screen. Vibration springs are fixedly installed on both the upper and lower sides of the bearing blocks.

[0015] Further, the vibration unit further includes a plurality of knocking blocks all fixedly installed on the upper side of the partition plate. Top blocks are fixedly installed on the lower sides of the two bearing blocks.

[0016] Further, a feed inlet is formed on the surface of the separation box. The feed inlet is fixedly connected with a guiding pipe. A sewage outlet is formed on one side of the lower part of the separation box. A sewage door is rotatably installed on the separation box on one side of the sewage outlet. A guiding outlet is formed at the bottom end of the separation box. A guiding pipe is fixedly installed in the guiding outlet, and a valve is installed on the guiding pipe.

[0017] Further, a bracket is fixedly installed on the lower side of the separation box.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the driving motor drives the secondary bevel gear to rotate, the secondary bevel gear drives the primary bevel gear to rotate, the primary bevel gear drives the secondary bevel gear to rotate, the secondary bevel gear drives the hollow column to rotate, the hollow column drives the primary pawl to move, causing the primary pawl to move clockwise. The primary pawl drives the primary gear to rotate through the secondary ratchet teeth, the primary gear drives the secondary gear to rotate, the secondary gear drives the driving column to move, the driving column drives the driving rod to move, and the driving rod drives the piston to slide reciprocally along the inner wall of the vacuum chamber. When the piston gradually moves away from the vacuum chamber, the demulsifier in the reagent tank is sucked into the vacuum chamber through the suction pipe. When the piston gradually extends into the vacuum chamber, the demulsifier sucked into the vacuum chamber by the piston is transported into the hollow column through the delivery pipe and then transported into the mixing pipe through the hollow column. When the demulsifier fills the entire mixing pipe and is continuously squeezed by the pressure generated in the vacuum chamber, the anti-backflow cover is pushed up. At this time, the demulsifier is sprayed out through the nozzle into the needle coke wastewater. When the primary bevel gear rotates, it will simultaneously drive the hollow column to rotate, and the hollow column drives multiple mixing pipes to rotate, adding and mixing the needle coke wastewater injected with the demulsifier while stirring, enabling it to be fully mixed and demulsified, and enhancing the effect of oil-water separation.

[0020] 2. In the present invention, the driving motor rotates clockwise, the output end of the driving motor drives the secondary bevel gear to rotate, the secondary bevel gear drives the primary bevel gear to rotate, the primary bevel gear drives the hollow column to rotate. At this time, the primary pawl driven by the hollow column moves, but disengages from the primary ratchet teeth and the primary gear no longer rotates, causing the gas injection at the nozzle to stop. The hollow column drives the rotating rod to rotate counterclockwise through the clamping block, and the rotating rod drives the secondary ratchet teeth arranged at the bottom to rotate counterclockwise, causing the secondary ratchet teeth to engage with the secondary pawl. At this time, the rotating rod drives the torsion spring shaft to rotate. The torsion spring shaft first drives the movable plate to rotate, and the movable plate is misaligned with the water drainage port. At this time, the water drainage port opens, enabling the needle coke wastewater after demulsification to be transported downward and respectively filtered for the particles in the wastewater and separated for oil and water through the particle filter screen and the oil-water separation screen, achieving the effect of multi-stage separation of oil and water.

[0021] 3. In the present invention, by rotating and squeezing the torsion spring shaft, when the torsion spring shaft is squeezed to the maximum torsion degree, the movable plate drives the partition plate to rotate through the limiting piece, and the partition plate drives multiple knocking blocks to move, causing the multiple knocking blocks to squeeze and knock the top block. When the knocking block squeezes and knocks the top block, the top block drives the bearing block to move upward, and the bearing block drives the particle filter screen to move upward through two positioning columns and, under the action of four vibration springs, drives the particle filter screen to vibrate, preventing the particle filter screen from being blocked during impurity filtration and affecting the filtration rate, and improving the rate of multi-stage separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further explained below with reference to the drawings and embodiments:

[0023] Figure 1It is the overall structural schematic diagram of the present invention;

[0024] Figure 2 It is the sectional structural schematic diagram of the separation box in the present invention;

[0025] Figure 3 It is the sectional structural schematic diagram of the medicine injection assembly of the present invention;

[0026] Figure 4 It is the sectional structural schematic diagram of the box cover in the present invention;

[0027] Figure 5 It is Figure 4 the enlarged structural schematic diagram of area A in

[0028] Figure 6 It is the sectional structural schematic diagram of the hollow column and the stirring tube in the present invention;

[0029] Figure 7 It is the schematic diagram of the partition plate, the oil-water separation net and their related structures in the present invention;

[0030] Figure 8 It is Figure 7 the enlarged structural schematic diagram of area B in

[0031] Figure 9 It is the exploded structural schematic diagram of the vibration unit in the present invention;

[0032] Figure 10 It is the exploded structural schematic diagram of the transmission unit in the present invention;

[0033] Figure 11 It is Figure 10 the enlarged structural schematic diagram of area C in

[0034] Explanation of reference numerals:

[0035] 1. Separation box; 2. Hollow column; 3. Stirring tube; 4. Fixed block; 5. Telescopic rod; 6. Anti-backflow cover; 7. Return spring; 8. Box cover; 9. Bracket; 10. First-stage bevel gear; 11. Driving motor; 12. Second-stage bevel gear; 13. First-stage gear; 14. Second-stage gear; 15. Driving column; 16. Support rod; 17. Vacuum box; 18. Piston; 19. Driving rod; 20. Delivery pipe; 21. Suction pipe; 22. Reagent box; 23. First-stage ratchet; 24. First-stage compression spring; 25. First-stage ratchet teeth; 26. Cross bar; 27. Scraper; 28. Oil-water separation net; 29. Bearing block; 30. Positioning column; 31. Particle filter net; 32. Vibration spring; 33. Partition board; 34. Movable board; 35. Torsion spring shaft; 36. Limit piece; 37. Top block; 38. Knocking block; 39. Drain opening; 40. Connecting block; 41. Rotating rod; 42. Second-stage ratchet; 43. Second-stage compression spring; 44. Second-stage ratchet teeth; 45. Clamping groove; 46. Clamping block; 47. Outlet pipe; 48. Valve; 49. Inlet pipe; 50. Drain valve. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with specific embodiments. However, those skilled in the art should understand that the detailed description given here in conjunction with the accompanying drawings is for better explanation. The structure of the present invention necessarily goes beyond these limited embodiments, and for some equivalent replacement schemes or common means, no detailed description will be given herein, but they still fall within the protection scope of this application.

[0037] Figures 1 to 11 This is the best embodiment of the present invention. The following will further describe the present invention in conjunction with the attached Figures 1 to 11 to further describe the present invention.

[0038] As Figures 1 to 11 shown, an oil-water separation system for treating needle coke wastewater includes a separation box 1. A box cover 8 is slidably installed on the upper side of the separation box 1. A rotation hole is opened on the upper side of the box cover 8, and a separation mechanism is rotatably installed in the rotation hole.

[0039] The separation mechanism includes a hollow column 2. The lower part of the hollow column 2 is quadrangular prism-shaped, and the upper part is cylindrical. The upper part of the hollow column 2 is rotatably installed in the rotation hole. A plurality of air injection holes are opened on the surface of the hollow column 2. A medicine injection assembly is fixedly installed in the air injection holes. A cross bar 26 is fixedly installed on the surface of the hollow column 2. Two scrapers 27 are fixedly installed on the lower side of the cross bar 26. Each air injection hole is connected to a stirring tube 3. One end of the stirring tube 3 is closed, and the other end is fixedly connected to the hollow column 2 and communicated with the corresponding air injection hole. A medicine injection assembly is arranged in each stirring tube 3. A filtering assembly is installed in the separation box 1, and the filtering assembly is located below the stirring tube 3. The bottom of the hollow column 2 is closed.

[0040] The filtering component includes a partition plate 33. The partition plate 33 is disc-shaped and is rotatably installed in the separation tank 1. A plurality of water drainage holes 39 are formed in the partition plate 33. An activity plate 34 is rotatably installed on the lower side of the partition plate 33. A blocking portion corresponding to each water drainage hole 39 is provided on the activity plate 34. When the blocking portion is aligned with the corresponding water drainage hole 39, the water drainage hole 39 can be closed. A plurality of limiting pieces 36 are fixedly installed on the lower side of the partition plate 33. The blocking portion of the activity plate 34 can push the partition plate 33 to rotate through the limiting pieces 36. A transmission unit is fixedly installed on the upper side of the activity plate 34. An oil-water separation net 28 is fixedly installed on the inner wall of the separation tank 1. Two sliding grooves are symmetrically formed on both sides of the inner wall of the separation tank 1. A vibration unit is slidably installed in each of the two sliding grooves. A disc-shaped particle filter screen 31 is arranged in the separation tank 1. The particle filter screen 31 is located in the lower part of the separation tank 1. The particle filter screen 31 is fixedly connected to the two vibration units. Among them, the partition plate 33 is located below the particle filter screen 31, and the oil-water separation net 28 is located below the activity plate 34.

[0041] With the above structure, four insertion holes are formed in the upper side of the separation tank 1. Four insertion blocks are fixedly installed on the lower side of the box cover 8. When installing the box cover 8, the four insertion blocks can be respectively inserted into the four insertion holes to complete the sliding installation of the box cover 8 and also facilitate the removal of the box cover 8. The hollow column 2 is hollow inside and can conduct the transmission of gas and liquid. Two cross bars 26 are symmetrically installed on both sides of the hollow column 2. The cross bars 26 are slidably attached to the lower side of the box cover 8. A scraper 27 is installed on the lower side of each cross bar 26. The scraper 27 is attached to the inner wall of the separation tank 1. When the hollow column 2 rotates, it will drive the two scrapers 27 to move through the two cross bars 26, so that the scraper 27 fits the inner wall of the separation tank 1 to scrape the stains adsorbed on the inner wall of the separation tank 1 and prevent them from sticking to the inner wall. Four air outlet holes are formed on the surface of the hollow column 2. The oil-water separation net 28 on the inner wall of the separation tank 1 is installed below the particle filter screen 31. Both the oil-water separation net 28 and the particle filter screen 31 are prior arts, and the filtering aperture of the oil-water separation net 28 is smaller than the aperture of the particle filter screen 31.

[0042] Further, the medicine injection assembly includes a plurality of nozzles opened on the surface of the stirring tube 3. A fixing block 4 is fixedly installed on the inner wall of the stirring tube 3. An expansion rod 5 is fixedly installed on the upper side of the fixing block 4. An anti-backflow cover 6 is fixedly installed at the top of the expansion rod 5. A return spring 7 is sleeved on the surface of the expansion rod 5. A plurality of support rods 16 are fixedly installed on the upper side of the box cover 8. The same vacuum box 17 is fixedly installed at the top of the plurality of support rods 16. A piston 18 is slidably installed on the inner wall of the vacuum box 17. An inhalation port is opened on one side of the vacuum box 17. The inhalation port is connected to an inhalation tube 21. A one-way valve is installed on the inhalation tube 21. A reagent box 22 is fixedly installed on the upper side of the vacuum box 17. A feeding hole is opened on one side of the reagent box 22. The other end of the inhalation tube 21 communicates with the reagent box 22 through the feeding hole. An addition port is opened on the upper side of the reagent box 22. A discharge port is opened on one side of the vacuum box 17. The discharge port is connected to a delivery tube 20. A one-way valve is installed on the delivery tube 20. The other end of the delivery tube 20 communicates with the top of the hollow column 2 through a rotary joint. A driving unit is fixedly installed on one side of the piston 18.

[0043] With the above structure, two nozzles are opened on each stirring tube 3. An anti-backflow cover 6 is installed in each nozzle. One end of the return spring 7 is fixedly connected to the lower side of the anti-backflow cover 6, and the other end of the return spring 7 is fixedly connected to the upper side of the fixing block 4. The fixing block 4 is fixedly connected to the inner wall of the corresponding stirring tube 3. The one-way valve on the inhalation tube 21 allows the reagent to enter the vacuum box 17 from the reagent box 22. The one-way valve on the delivery tube 20 allows the reagent to enter the hollow column 2 from the vacuum box 17. When the pressure generated in the vacuum box 17 is transmitted to the nozzle, the anti-backflow cover 6 is opened under the pressure. When the vacuum box 17 stops working, the anti-backflow cover 6 will be pulled by the return spring 7 to close again at the nozzle, sealing the nozzle to prevent the backflow of sewage. In addition, when the medicine in the reagent box 22 is emptied, the addition port is kept open, and the outside air can be inhaled. The reagent box 22, the hollow column 2 and the stirring tube 3 are filled with air, and the gas is continuously injected into the wastewater through the nozzle. At this time, the separation efficiency of the oil and water after the demulsification of the emulsion layer can be promoted, which is consistent with the principle of the air flotation method in the common oil-water separation of the emulsion layer of needle coke wastewater.

[0044] Further, the driving unit includes a first pawl 23. The first pawl 23 is rotatably installed on the surface of the hollow column 2. A first compression spring 24 is arranged between the first pawl 23 and the hollow column 2. A first gear 13 is rotatably installed on the upper side of the box cover 8. A number of first ratchet teeth 25 are evenly distributed at intervals around the inner wall of the first gear 13.

[0045] With the above structure, when the first pawl 23 moves clockwise and cooperates with the first compression spring 24, it will engage with the first ratchet teeth 25 to drive the first gear 13 and provide driving force for the medicine injection assembly. And when the first pawl 23 moves clockwise.

[0046] Further, the driving unit further includes a secondary gear 14 rotatably mounted on the upper side of the box cover 8. The secondary gear 14 meshes with the primary gear 13. A driving column 15 is fixedly mounted on the upper side of the secondary gear 14. The driving column 15 is eccentrically arranged with respect to the secondary gear 14. One side of the piston 18 is rotatably mounted with a driving rod 19. A sliding groove is formed on the surface of the driving rod 19. The driving column 15 is slidably mounted in the sliding groove.

[0047] With the above structure, the driving column 15 rotates synchronously with the secondary gear 14. When the secondary gear 14 rotates, it cooperates with the sliding groove formed on the surface of the driving rod 19 to make the driving rod 19 perform a linear reciprocating motion, thereby driving the piston 18 to perform a reciprocating motion.

[0048] Further, the driving unit further includes a primary bevel gear 10 fixedly mounted on the hollow column 2. A driving motor 11 is fixedly mounted on the upper side of the box cover 8. The output end of the driving motor 11 is fixedly mounted with a secondary bevel gear 12. The primary bevel gear 10 meshes with the secondary bevel gear 12.

[0049] With the above structure, the driving motor 11 is a servo motor, which can be controlled to rotate forward or backward, and drives the hollow column 2 to rotate clockwise or counterclockwise through the secondary gear 14 and the primary gear 13.

[0050] Further, the transmission unit includes a torsion spring shaft 35 fixedly mounted on the upper side of the movable plate 34. A primary avoidance opening is formed on the partition plate 33. A connecting block 40 is fixedly mounted on the top of the torsion spring shaft 35. The bottom end of the connecting block 40 is coaxially and fixedly connected to the top end of the torsion spring shaft 35. A clamping block 46 is fixedly mounted on the bottom end of the hollow column 2. A rotating rod 41 is slidably mounted on the lower side of the clamping block 46. A clamping groove 45 is formed at the top end of the rotating rod 41. The clamping block 46 can slidably extend into the clamping groove 45, and the cross sections of both the clamping block 46 and the clamping groove 45 are square or other regular polygons. An installation groove is formed at the bottom end of the rotating rod 41. The top of the connecting block 40 is rotatably mounted in the installation groove. A secondary ratchet pawl 42 is rotatably mounted at the top end of the torsion spring shaft 35. Secondary ratchet teeth 44 are formed on the inner wall of the installation groove. A secondary compression spring 43 is arranged between the secondary ratchet pawl 42 and the connecting block 40.

[0051] With the above structure, the torsion spring shaft 35 is a prior art, which consists of a torsion spring, a shaft, and a fixing device. The torsion spring is wound around a shaft and fixed by the fixing device to ensure that they do not slide relative to each other or fall off during use. The elastic characteristics of the torsion spring are utilized to achieve the reset function, which will not be elaborated here. When the secondary pawl 42 rotates counterclockwise, it engages with the secondary ratchet 44 under the action of the secondary compression spring 43, so that the rotating rod 41 provides power for the torsion spring shaft 35. When the torsion spring shaft 35 is compressed to the maximum torsion degree, the movable plate 34 drives the partition plate 33 to rotate through the limit piece 36. The fixing device can be a bolt or a barb. One end of the torsion spring is fixed on the shaft, and the other end is fixed on the rotating rod 41.

[0052] Further, the vibration unit includes two bearing blocks 29, which are respectively slidably installed in two chutes. A positioning post 30 is fixedly installed on the upper side of the bearing block 29. The particle filter screen 31 is slidably installed on the surface of the positioning post 30. A secondary avoidance hole for inserting the positioning post 30 is provided on the surface of the particle filter screen 31. Vibration springs 32 are fixedly installed on both the upper and lower sides of the bearing block 29, and the vibration springs 32 are fixedly connected to the corresponding sides of the chutes.

[0053] With the above structure, the two bearing blocks 29 are symmetrically installed, the particle filter screen 31 is slidably installed on the two positioning posts 30, and the secondary avoidance hole facilitates the connection between the positioning post 30 and the particle filter screen 31. The vibration springs 32 are fixedly installed between the bearing block 29 and the inner wall of the chute.

[0054] Further, the vibration unit further includes a plurality of knocking blocks 38, which are all fixedly installed on the upper side of the partition plate 33. A top block 37 is fixedly installed on the lower side of each of the two bearing blocks 29.

[0055] With the above structure, the knocking blocks 38 are installed at equal intervals in the outer ring area of the partition plate 33. A top block 37 is correspondingly installed on the lower side of each of the two bearing blocks 29. The two top blocks 37 and the plurality of knocking blocks 38 are all hemispherical, which is convenient for guiding and extrusion.

[0056] Further, a feed port is provided on the surface of the separation box 1. The feed port is fixedly connected with an inlet pipe 49. A sewage discharge port is provided on one side of the lower part of the separation box 1. A sewage discharge door 50 for closing the sewage discharge port is rotatably installed on the side of the separation box 1. The sewage discharge door 50 is fixedly connected to the separation box 1 by bolts. A discharge port is provided at the bottom end of the separation box 1. The discharge port is fixedly connected with a discharge pipe 47. A valve 48 is installed on the discharge pipe 47.

[0057] With the above structure, the sewage discharge door 50 facilitates the discharge of the filtered oil stain, the discharge port facilitates the discharge of the waste water, and the inlet pipe 49 is obliquely installed to prevent the waste water from overflowing.

[0058] Further, a bracket 9 is fixedly installed on the surface of the separation box 1.

[0059] With the above structure, the bracket 9 lifts the separation box 1 to facilitate its operation.

[0060] Working principle: When the device is in use, first, the needle coke wastewater to be treated is introduced into the separation box 1 through the inlet pipe 49. Then, a sufficient amount of demulsifier is introduced into the reagent box 22 through the addition port. Next, the drive motor 11 is started to rotate counterclockwise. The output end of the drive motor 11 drives the secondary bevel gear 12 to rotate. The secondary bevel gear 12 drives the primary bevel gear 10 to rotate. The primary bevel gear 10 drives the secondary bevel gear 12 to rotate. The secondary bevel gear 12 drives the hollow column 2 to rotate. The hollow column 2 drives the primary pawl 23 to move, causing the primary pawl 23 to move clockwise. The primary pawl 23 drives the primary gear 13 to rotate through the secondary ratchet teeth 44. The primary gear 13 drives the secondary gear 14 to rotate. The secondary gear 14 drives the drive column 15 to move. The drive column 15 drives the drive rod 19 to move. The drive rod 19 drives the piston 18 to slide reciprocally along the inner wall of the vacuum box 17. When the piston 18 gradually moves away from the vacuum box 17, the demulsifier in the reagent box 22 is sucked into the vacuum box 17 through the suction pipe 21. When the piston 18 gradually extends into the vacuum box 17, the piston 18 transports the demulsifier sucked into the vacuum box 17 to the hollow column 2 through the delivery pipe 20 and is transported to the mixing pipe 3 by the hollow column 2. When the demulsifier fills the entire mixing pipe 3 and is continuously squeezed by the pressure generated in the vacuum box 17, the anti-backflow cover 6 is lifted. At this time, the demulsifier is sprayed out through the nozzle into the needle coke wastewater. When the primary bevel gear 10 is rotating, it will also drive the hollow column 2 to rotate. The hollow column 2 drives multiple mixing pipes 3 to rotate, adding and mixing the needle coke wastewater injected with the demulsifier at the same time to make it fully mixed and demulsified.

[0061] After all the demulsifier is injected into the needle coke wastewater, the drive motor 11 continues to operate. At this time, air is injected into the reagent box 22, the hollow column 2, and the mixing pipe 3, and the gas is continuously injected into the wastewater through the nozzle. At this time, the separation efficiency of the oil and water after the emulsified layer is demulsified can be promoted.

[0062] When the driving motor 11 runs continuously until the demulsification layer is completely decomposed to meet the separation requirements, the driving motor 11 rotates clockwise. At this time, the output end of the driving motor 11 drives the secondary bevel gear 12 to rotate, the secondary bevel gear 12 drives the primary bevel gear 10 to rotate, the primary bevel gear 10 drives the hollow column 2 to rotate. At this time, the primary pawl 23 driven by the hollow column 2 moves. At this time, the primary gear 13 stops rotating, so that the gas injection at the nozzle stops. The hollow column 2 drives the rotating rod 41 to rotate counterclockwise through the clamping block 46. The rotating rod 41 drives the secondary ratchet 44 arranged at the bottom to rotate counterclockwise, so that the secondary ratchet 44 meshes with the secondary pawl 42. At this time, the rotating rod 41 drives the torsion spring shaft 35 to rotate. The torsion spring shaft 35 first drives the movable plate 34 to rotate. The movable plate 34 is misaligned with the water drainage port 39. At this time, the water drainage port 39 is opened, so that the needle coke wastewater after demulsification is conveyed downward, and the particles in the wastewater are filtered and the oil-water separation are respectively carried out through the particle filter screen 31 and the oil-water separation net 28. When one side of the movable plate 34 abuts against one side of the limit piece 36, the torsion spring shaft 35 starts to be rotationally squeezed. When the torsion spring shaft 35 is squeezed to the maximum torsion degree, the movable plate 34 drives the partition plate 33 to rotate through the limit piece 36. The partition plate 33 drives a plurality of knocking blocks 38 to move, so that the plurality of knocking blocks 38 squeeze and knock the top block 37. When the knocking block 38 squeezes and knocks the top block 37, the top block 37 drives the bearing block 29 to move upward. The bearing block 29 drives the particle filter screen 31 to move upward through the two positioning columns 30, and drives the particle filter screen 31 to vibrate under the action of the four vibration springs 32, so as to prevent the particle filter screen 31 from being blocked during impurity filtration and affecting the filtration rate.

[0063] Finally, a waste liquid tank is externally connected under the outlet pipe 47. The valve 48 is manually opened to discharge the wastewater filtered without particulate impurities and oil stains. When all the wastewater is discharged, the driving motor 11 is turned off. After the driving motor 11 is turned off, the torsion spring shaft 35 is not subject to external force. At this time, the movable plate 34 starts to be reset by the torsion force, so that the partition plate 33 and the movable plate 34 are re-closed. The sewage door 50 is manually opened to discharge the filtered oil stains. The box cover 8 and its associated mechanism are manually opened to take out the impurities on the particle filter screen 31, and the treatment of the needle coke wastewater is completed.

[0064] The above is only a preferred embodiment of the present invention, and is not a limitation of the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An oil-water separation system for treating needle coke wastewater, comprising a separation tank (1), characterized in that: A lid (8) is slidably mounted on the upper side of the separation box (1). A rotation hole is formed in the upper side of the lid (8), and a separation mechanism is rotatably mounted in the rotation hole. The separation mechanism includes a hollow column (2). The upper part of the hollow column (2) is rotatably mounted in the rotation hole. A plurality of air injection holes are formed in the surface of the hollow column (2). A cross bar (26) is fixedly mounted on the side of the hollow column (2). A scraping plate (27) is fixedly mounted on the lower side of the cross bar (26). A medicine injection assembly is fixedly mounted in the air injection holes. The air injection holes are all fixedly connected with stirring pipes (3). Each medicine injection assembly is arranged in the corresponding stirring pipe (3). A filtering assembly is mounted in the separation box (1), and the filtering assembly is located below the stirring pipes (3). The filtering assembly includes a partition plate (33). The partition plate (33) is rotatably mounted in the separation box (1). A plurality of water drainage holes (39) are formed in the surface of the partition plate (33). A movable plate (34) is rotatably mounted on the lower side of the partition plate (33). A blocking part corresponding to the water drainage hole (39) one by one is arranged on the movable plate (34). When the blocking part is aligned with the water drainage hole (39), the water drainage hole (39) is closed. A plurality of limiting pieces (36) are fixedly mounted on the lower side of the partition plate (33). A transmission unit is fixedly mounted on the upper side of the movable plate (34). An oil-water separation net (28) is fixedly mounted on the inner wall of the separation box (1). Two sliding grooves are formed in the inner wall of the separation box (1). A vibration unit is slidably mounted in the two sliding grooves. A particle filter screen (31) is mounted between the two vibration units. The medicine injection assembly includes a plurality of spray nozzles formed in the surface of the stirring pipe (3). A fixed block (4) is fixedly mounted on the inner wall of the stirring pipe (3). A telescopic rod (5) is fixedly mounted on the upper side of the fixed block (4). An anti-backflow cover (6) is fixedly mounted at the top of the telescopic rod (5). A return spring (7) is sleeved on the surface of the telescopic rod (5). A plurality of support rods (16) are fixedly mounted on the upper side of the lid (8). The tops of the plurality of support rods (16) are fixedly mounted with the same vacuum box (17). A piston (18) is slidably mounted on the inner wall of the vacuum box (17). An air suction port is formed in one side of the vacuum box (17). The air suction port is fixedly connected with a suction pipe (21). A one-way valve is mounted on the suction pipe (21). A reagent box (22) is fixedly mounted on the upper side of the vacuum box (17). A material injection hole is formed in one side of the reagent box (22). The other end of the suction pipe (21) is communicated with the material injection hole. An adding port is formed in the upper side of the reagent box (22). A discharge port is formed in one side of the vacuum box (17). The discharge port is fixedly connected with a delivery pipe (20). A one-way valve is fixedly mounted on the delivery pipe (20). The other end of the delivery pipe (20) is rotatably connected with the top end of the hollow column (2). A driving unit is fixedly mounted on one side of the piston (18).

2. The oil-water separation system for treating needle coke wastewater according to claim 1, wherein: The driving unit includes a first - stage pawl (23), the first - stage pawl (23) is rotatably installed on the surface of the hollow column (2), a first - stage compression spring (24) is arranged between the first - stage pawl (23) and the hollow column (2), a first - stage gear (13) is rotatably installed on the upper side of the box cover (8), and a number of first - stage ratchet teeth (25) are arranged at intervals on the inner wall of the first - stage gear (13).

3. An oil-water separation system for treating needle coke wastewater according to claim 2, characterized in that: The driving unit further includes a second - stage gear (14), the second - stage gear (14) is rotatably installed on the upper side of the separation box (1), the second - stage gear (14) meshes with the first - stage gear (13), a driving column (15) is fixedly installed on the upper side of the second - stage gear (14), a driving rod (19) is rotatably installed on one side of the piston (18), a chute is formed on the surface of the driving rod (19), and the driving column (15) is slidably installed in the chute.

4. The oil-water separation system for treating needle coke wastewater according to claim 3, wherein: The driving unit further includes a first - stage bevel gear (10), the first - stage bevel gear (10) is fixedly installed on the surface of the hollow column (2), a driving motor (11) is fixedly installed on the upper side of the box cover (8), a second - stage bevel gear (12) is fixedly installed at the output end of the driving motor (11), and the first - stage bevel gear (10) meshes with the second - stage bevel gear (12).

5. The oil-water separation system for treating needle coke wastewater according to claim 1, wherein: The transmission unit includes a torsion - spring shaft (35), the torsion - spring shaft (35) is fixedly installed on the upper side of the movable plate (34), a first - stage avoidance opening is formed on the partition plate (33), a connecting block (40) is fixedly installed at the top of the torsion - spring shaft (35), a clamping block (46) is fixedly installed at the bottom end of the hollow column (2), a rotating rod (41) is slidably installed under the clamping block (46), a clamping groove (45) is formed at the top end of the rotating rod (41), and the clamping block (46) can slide into the clamping groove (45). An installation groove is formed at the bottom end of the rotating rod (41), the top of the connecting block (40) is rotatably installed in the installation groove, a second - stage pawl (42) is rotatably installed at the top end of the torsion - spring shaft (35), second - stage ratchet teeth (44) are formed on the inner wall of the installation groove, and a second - stage compression spring (43) is arranged between the second - stage pawl (42) and the connecting block (40).

6. The oil-water separation system for treating needle coke wastewater according to claim 1, wherein: The vibration unit includes two bearing blocks (29), the two bearing blocks (29) are respectively slidably installed in the two chutes, positioning columns (30) are fixedly installed on the upper sides of the bearing blocks (29), a particle filter screen (31) is slidably installed on the surfaces of the positioning columns (30), second - stage avoidance holes matching with the positioning columns (30) are formed on the surface of the particle filter screen (31), and vibration springs (32) are fixedly installed on the upper and lower sides of the bearing blocks (29).

7. An oil-water separation system for treating needle coke wastewater according to claim 6, characterized in that: The vibration unit further includes a plurality of knocking blocks (38), the plurality of knocking blocks (38) are all fixedly installed on the upper side of the partition plate (33), and top blocks (37) are fixedly installed on the lower sides of the two bearing blocks (29).

8. An oil-water separation system for treating needle coke wastewater according to claim 1, characterized in that: A feed inlet is formed on the surface of the separation tank (1), and an inlet pipe (49) is fixedly connected to the feed inlet. A sewage discharge port is formed on one side of the lower part of the separation tank (1), and a sewage discharge door (50) is rotatably installed on the separation tank (1) on one side of the sewage discharge port. A discharge outlet is formed at the bottom end of the separation tank (1), and a discharge pipe (47) is fixedly installed in the discharge outlet. A valve (48) is installed on the discharge pipe (47).

9. An oil-water separation system for treating needle coke wastewater according to claim 1, characterized in that: A bracket (9) is fixedly installed on the lower side of the separation tank (1).

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