Environment-friendly sewage treatment oil-water separation device and use method thereof

Abstract

The application discloses an environment-friendly oil-water separation device for sewage treatment and a use method thereof, and relates to the technical field of sewage treatment.The structure of the application comprises a base, a base is fixedly installed on the top of the base, a water inlet pipe is arranged through the top side wall of the base, and the base further comprises an oil absorption assembly.The oil absorption assembly comprises a water pump, a first cover body is fixedly arranged on the top of the treatment cylinder, and a plastic sheet made of a plastic material with a density smaller than that of water and larger than that of oil is adopted in the application.Therefore, when waste oil first contacts the plastic sheet, the plastic sheet does not float up, and the plastic sheet floats up only when it contacts the water surface, so as to drive the telescopic rod to slide in the telescopic cylinder until the second metal foil contacts the first metal foil to form a loop, and the water pump is started to start pumping the oil above the sewage, so as to reduce the waste water mixing and suction, and further improve the oil / water separation effect, and the overall structure is simple and ingenious.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an environmentally friendly wastewater treatment oil-water separation device and its usage method. Background Technology

[0002] In wastewater treatment, especially in kitchen wastewater and industrial wastewater, waste oil is often mixed in with the wastewater. Before purifying the wastewater, the waste oil needs to be separated from the wastewater. Existing oil-water separation equipment mainly uses gravity separation, which allows the layered waste oil to flow out from the top and the wastewater to flow out from the bottom. However, this method cannot fully separate the oil and water, so the separation effect is poor.

[0003] A patent publication number CN114804295A discloses an environmentally friendly oil-water separation device for wastewater treatment, comprising an oil-water separator. The oil-water separator includes a housing, an oil removal component disposed inside the housing, and a drive shaft. An oil removal roller is fixedly connected to the outer wall of the drive shaft, and an oleophilic-hydrophobic membrane is fixedly connected to the outer wall of the oil removal roller. A scraper is in contact with the outer wall of the oleophilic-hydrophobic membrane. A third driven shaft is connected to one side of the drive shaft via a transmission component, and a swivel is connected to the outer wall of the third driven shaft. A cooling component is also included. This invention enhances the adsorption of grease, improves the oil-water separation effect, and ensures the accuracy of oil-water separation during use, guaranteeing the purity of the separated grease and wastewater. It effectively adsorbs and collects grease, significantly improving the grease separation efficiency and reducing grease residue.

[0004] Although the device can increase the adsorption of oil, it can only adsorb waste oil on the surface of sewage and cannot separate the water-oil mixture inside the sewage in multiple stages. Since the water-oil mixture has already been emulsified and will not separate into layers, the oil-water separation effect is still poor. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly wastewater treatment oil-water separation device and its usage method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly wastewater treatment oil-water separation device, comprising a base, a base fixedly installed on the top of the base, and a water inlet pipe penetrating one side wall of the top of the base, and further comprising:

[0007] An oil suction assembly includes a water pump. A first cover is fixedly installed on the top of the processing cylinder. The water pump is fixedly installed on the top of the first cover. An oil suction pipe extending into the processing cylinder is fixedly connected to the oil suction end of the water pump. A telescopic cylinder is fixedly installed at the bottom of the first cover. A telescopic rod made of lightweight material is slidably sleeved at the bottom of the telescopic cylinder. A plastic sheet is fixedly installed at the bottom of the telescopic rod. The density of the plastic sheet is between that of water and oil. A second metal foil is fixedly installed at the top of the telescopic rod. A first metal foil is fixedly installed on the inner wall of the top of the telescopic cylinder. The first and second metal foils are electrically connected to the water pump. The bottom horizontal plane of the oil suction pipe is positioned 1 mm above the horizontal plane of the plastic sheet when the second and first metal foils are in contact.

[0008] Wastewater treatment components, which integrate auxiliary oil level rise and secondary filtration of wastewater, are fixedly installed inside the treatment cylinder.

[0009] Preferably, the wastewater treatment assembly includes a motor, and a water outlet is provided on one side wall of the bottom of the treatment cylinder. The motor is fixedly installed on the top of the first cover. The output end of the motor is detachably and fixedly connected to a drive shaft with a hollow structure. A fixed shaft is fixedly connected to the center of the bottom plate of the treatment cylinder. The bottom end of the drive shaft extends into the interior of the treatment cylinder and is seamlessly and movably sleeved on the outside of the fixed shaft. A piston disc that is seamlessly in contact with and fits against the inner wall of the treatment cylinder is threaded onto the bottom end of the drive shaft. Two limiting posts slide through the piston disc. The bottom ends of the limiting posts are fixedly connected to the bottom plate of the treatment cylinder. The piston disc is used to lift the wastewater upward.

[0010] Preferably, the wastewater treatment assembly further includes a return trough, and the inner wall of the treatment cylinder is provided with an annular return trough. A filter screen aligned with the inner wall of the treatment cylinder is fixedly installed on the outside of the return trough. The return trough is divided into upper and lower regions, and the pore size of the upper region of the return trough is larger than that of the lower region.

[0011] Preferably, the top surface of the piston disc is fixedly provided with Velcro, and the top surface of the Velcro is fixedly provided with multiple plastic filaments for adsorbing sewage sediment.

[0012] Preferably, a fixed sleeve is fixedly fitted to the outside of the drive shaft, and a Z-shaped rod is fixedly connected to the outside of the fixed sleeve. A discharge channel is provided inside the Z-shaped rod, which passes through both ends of the discharge channel and is connected to the hollow interior of the drive shaft.

[0013] Preferably, a blocking disc is fixedly connected to the top end of the fixed shaft, and a partition disc that fits against the blocking disc is fixedly disposed inside the drive shaft. The blocking disc and the partition disc are respectively provided with a first material hole and a second material hole that are staggered.

[0014] Preferably, the top end of the drive shaft is provided with an opening to facilitate the injection of an oil-water separator.

[0015] Preferably, the top of the limiting post is provided with a cavity, and a T-shaped post is slidably installed inside the cavity. The top of the T-shaped post slides through the upper side wall of the cavity and is fixedly provided with a semi-circular extrusion block. A spring is fixedly connected between the T-shaped post and the upper side wall of the cavity. A pressure ring is fixedly installed at the bottom of the Z-shaped rod. The bottom surface of the pressure ring is set as an inclined surface, and the bottom of the pressure ring abuts against both extrusion blocks. The side wall of the cavity is provided with multiple air bubble holes.

[0016] Preferably, the treatment cylinder has a treatment box integrally formed on one side where the water outlet is provided, a water outlet valve is fixedly provided on the bottom side plate of the treatment box, and a second cover is fixedly provided on the top of the treatment box. A thin rope is movably passed through the second cover, and both ends of the thin rope extend into the interior of the treatment box, and multiple sheets of oil-absorbing paper are fixedly adhered in layers.

[0017] A method for using an environmentally friendly wastewater treatment oil-water separation device, comprising the following steps:

[0018] S1. Extract waste oil. Sewage is slowly introduced into the treatment cylinder through the water inlet pipe. Since the plastic sheet is made of a plastic material with a density less than water but greater than oil, the plastic sheet will only float on the water surface and not on the oil surface. As the sewage is introduced, it will rise continuously. The plastic sheet drives the telescopic rod to slide inside the telescopic cylinder until the second metal foil comes into contact with the first metal foil to form a circuit. The water pump starts and gradually sucks out the waste oil through the oil extraction pipe. The water surface is always at the bottom mm of the oil extraction pipe, which greatly reduces the mixing and intake of sewage.

[0019] S2. Separating oil-water mixture: Pre-fill the drive shaft with an appropriate amount of oil-water separator. Start the motor, and the motor will drive the drive shaft to rotate slowly and evenly. When the drive shaft rotates, the separator plate inside the drive shaft will rotate with it relative to the fixed shaft. When the second material hole coincides with the first material hole, the oil-water separator will fall and flow out along the discharge channel inside the Z-shaped rod. The oil-water separator will react quickly with the oil, causing the oil or oily substances in the water-oil mixture to precipitate, thus resulting in stratification.

[0020] S3. Raise the sewage water level. As the oil in the water-oil mixture separates into layers, the original sewage level will continue to decrease. The piston disc, which is threaded onto the bottom of the drive shaft, will gradually rise under the limiting action of the limiting post when the drive shaft rotates, thereby raising the sewage water level. This allows the first metal foil and the second metal foil to continue to contact each other and form a circuit, so that the water pump can continuously extract the separated waste oil.

[0021] S4. Bubble generation accelerates oil / water separation. The bottom surface of the pressure ring is set as an inclined surface. When the pressure ring rotates with the Z-shaped rod, the inclined surface of the pressure ring will intermittently squeeze the extrusion block downwards. With the help of the spring, the extrusion block will drive the T-shaped column to move up and down reciprocally inside the cavity, thereby generating microbubbles through the bubble holes. The emulsified oil particles in the water will adhere to the generated microbubbles and float to the water surface with the bubbles.

[0022] S5. The wastewater is returned and filtered. The piston disc continues to move upward until it is limited by the Z-shaped rod and can no longer move upward. The motor stops running temporarily. At this time, the piston disc is exactly in the center of the filter screen. The piston disc acts as a dividing line. The wastewater accumulated on the top surface of the piston disc will flow into the interior of the return tank through the upper part of the filter screen and flow out from the lower part of the filter screen under the action of gravity. By setting the pores of the upper and lower parts of the filter screen to gradually decrease, the impurities in the wastewater are filtered in two stages.

[0023] S6. Adsorbing residual waste oil: Start the motor to drive the drive shaft to rotate in the opposite direction, and the piston disc moves down to its original position. The piston disc will help squeeze the sewage out of the outlet hole, so that the liquid level of the sewage in the treatment tank continues to rise and come into contact with the oil-absorbing paper. The oil-absorbing paper can absorb the last remaining waste oil in the sewage.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention uses a plastic material with a density less than water but greater than oil to make a plastic sheet. Therefore, when waste oil first comes into contact with the plastic sheet, the plastic sheet will not float. It will only float when the plastic sheet comes into contact with the water surface, thereby driving the telescopic rod to slide inside the telescopic cylinder until the second metal foil comes into contact with the first metal foil to form a circuit. Only then will the water pump start. Since the bottom end of the oil suction pipe is set 1 mm above the horizontal plane of the plastic sheet when the second metal foil comes into contact with the first metal foil, when the water pump starts, the oil above the sewage will be gradually sucked out by the water pump through the oil suction pipe, while the water surface is always 1 mm below the bottom of the oil suction pipe, thereby reducing the mixing and intake of wastewater and improving the oil / water separation effect. Moreover, the overall structure is simple and ingenious.

[0026] 2. In this invention, the motor is started, which drives the drive shaft to rotate slowly and uniformly. The separator rotates with the fixed shaft. When the second material hole coincides with the first material hole, the oil-water separator flows out through the discharge channel inside the Z-shaped rod. The oil-water separator reacts quickly with the oil, causing the oil or oily substances in the water-oil mixture to precipitate out, resulting in stratification, which is convenient for the water pump to extract.

[0027] 3. By setting a columnar Z-shaped rod, the present invention can not only make the oil-water separator fully contact with the sewage, but also reduce the contact area with the sewage, preventing the sewage from turning upside down and causing the oil / water to not separate easily. By setting the Z-shaped rod to a "Z" shape, the backflow of sewage into the drive shaft can be reduced.

[0028] 4. In this invention, a piston disc is threaded onto the bottom of the drive shaft. When the drive shaft rotates, the piston disc gradually rises under the limiting action of the limiting post. Therefore, when the oil in the water-oil mixture separates into layers and the original sewage level continues to drop, the piston disc can promptly raise the sewage level, allowing the first metal foil and the second metal foil to continue to contact and form a circuit, thereby enabling the water pump to continuously extract the separated waste oil.

[0029] 5. This invention provides a pressure ring at the bottom of the Z-shaped rod, with the bottom surface of the pressure ring being an inclined surface. As the pressure ring rotates with the Z-shaped rod, the inclined surface of the pressure ring intermittently presses down on the extrusion block. In conjunction with the spring, the extrusion block drives the T-shaped column to move up and down reciprocally inside the cavity, thereby generating microbubbles through the bubble holes. Emulsified oil particles in the water adhere to the generated microbubbles and float to the surface with the bubbles, thus further improving the oil / water separation effect.

[0030] 6. By setting up a filter screen, when the piston disc continues to move upward and contacts the Z-shaped rod, the piston disc is limited and cannot move upward further. The motor is temporarily stopped due to resistance. At this time, the piston disc is exactly in the center of the filter screen. The piston disc serves as a dividing line, dividing the upper and lower areas of the filter screen. Therefore, the sewage accumulated on the top surface of the piston disc will flow into the interior of the return tank through the upper part of the filter screen and flow out from the lower part of the filter screen under the action of gravity, which facilitates the subsequent entry of sewage into the interior of the treatment tank for further treatment.

[0031] 7. This invention sets the pore size of the filter screen to gradually decrease in the upper and lower areas. When the sewage flows into the upper and lower areas of the filter screen, the impurities in the sewage are filtered in two stages. Furthermore, since the residual waste oil has a stronger adhesion to the impurity particles, the filter screen will also indirectly separate the residual waste oil when filtering the impurities in two stages, thereby further improving the sewage treatment effect.

[0032] 8. The present invention sets up a return channel so that the sewage falls into the bottom of the piston plate. Only the sediment and impurities in the sewage remain on the top surface of the piston plate. By setting long plastic filaments on the top surface of the piston plate, not only can most of the sediment and impurities be blocked when the sewage flows to the filter screen, but also the impurities remaining on the surface of the Z-shaped rod can be cleaned during the subsequent downward movement.

[0033] 9. The present invention provides a plastic filament between the piston disc and the plastic filament, which makes it easier to remove the plastic filament attached to the Velcro by using a tool after opening the first cover, thereby facilitating the cleaning of sewage and impurities on the top surface of the piston disc.

[0034] 10. This invention reverses the start-up motor to move the piston disc downwards and back into position. During the downward movement of the piston disc, it assists in squeezing the sewage out of the outlet hole. This not only increases the speed at which sewage flows into the treatment tank, but also prevents sewage from flowing back into the treatment tank. This causes the sewage level in the treatment tank to rise continuously and come into contact with the oil-absorbing paper. The oil-absorbing paper can absorb the last remaining waste oil in the sewage, thereby further improving the overall sewage treatment effect of this invention. Attached Figure Description

[0035] Figure 1 This is a first perspective view of the present invention;

[0036] Figure 2 This is a front sectional view of the present invention;

[0037] Figure 3 This is a second perspective view of the present invention;

[0038] Figure 4 This is a third perspective view of the present invention;

[0039] Figure 5 This is a cross-sectional view of the telescopic cylinder of the present invention;

[0040] Figure 6 For the present invention Figure 4 A partial structural diagram;

[0041] Figure 7 For the present invention Figure 2 A partial structural diagram;

[0042] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point A in the middle.

[0043] The attached diagram lists the components represented by each number as follows:

[0044] Base;

[0045] 21. Processing cylinder; 22. First cover; 23. Inlet pipe; 24. Outlet hole; 25. Return trough; 26. Filter screen;

[0046] 31. Water pump; oil suction pipe;

[0047] 41. Telescopic cylinder; 42. Telescopic rod; 43. First metal foil; 44. Second metal foil; 45. Plastic sheet;

[0048] Motor; 51, drive shaft; 52, fixed shaft; 53, blocking disc; 531, first material hole; 54, separating disc; 541, second material hole;

[0049] 61. Fixed sleeve; 62. Z-shaped rod; 63. Discharge channel; 64. Pressure ring;

[0050] Piston disc; 71. Velcro; 72. Plastic filaments;

[0051] 81. Limiting post; 82. Cavity; 83. T-shaped post; 84. Spring; 85. Extrusion block; 86. Bubble hole;

[0052] 9. Processing box; 91. Second cover; 92. Water outlet valve; 93. String; 94. Oil-absorbing paper. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Please see Figures 1 to 8 The present invention provides a technical solution:

[0055] An environmentally friendly wastewater treatment oil-water separation device includes a base 1, with a base 1 fixedly mounted on the top of the base 1, and an inlet pipe 22 penetrating through one side wall of the top of the base 1. It also includes:

[0056] An oil suction assembly includes a water pump 3. A first cover 21 is fixedly installed on the top of the processing cylinder 2. The water pump 3 is fixedly installed on the top of the first cover 21. An oil suction pipe 31 extending into the processing cylinder 2 is fixedly connected to the oil suction end of the water pump 3. A telescopic cylinder 4 is fixedly installed at the bottom of the first cover 21. A telescopic rod 41 made of lightweight material is slidably sleeved at the bottom of the telescopic cylinder 4. A plastic sheet 44 is fixedly installed at the bottom of the telescopic rod 41. The density of the plastic sheet 44 is between the density of water and the density of oil. A second metal foil 43 is fixedly installed at the top of the telescopic rod 41. A first metal foil 42 is fixedly installed on the inner wall of the top of the telescopic cylinder 4. The first metal foil 42 and the second metal foil 43 are electrically connected to the water pump 3. The bottom horizontal plane of the oil suction pipe 31 is positioned 1 mm above the horizontal plane of the plastic sheet 44 when the second metal foil 43 contacts the first metal foil 42.

[0057] The wastewater treatment component, which integrates auxiliary oil level rise and secondary filtration of wastewater, is fixedly installed inside the treatment cylinder 2. Example

[0058] The wastewater treatment assembly includes a motor 5. A water outlet 23 is provided on one side wall of the bottom of the treatment cylinder 2. The motor 5 is fixedly installed on the top of the first cover 21. The output end of the motor 5 is detachably and fixedly connected to a drive shaft 51 with a hollow structure. A fixed shaft 52 is fixedly connected to the center of the bottom plate of the treatment cylinder 2. The bottom end of the drive shaft 51 extends into the interior of the treatment cylinder 2 and is seamlessly and movably sleeved on the outside of the fixed shaft 52. A piston disc 7 is threadedly sleeved on the bottom end of the drive shaft 51 and is in seamless contact with the inner wall of the treatment cylinder 2. Two limiting posts 8 slide through the piston disc 7. The bottom end of the limiting posts 8 is fixedly connected to the bottom plate of the treatment cylinder 2. The piston disc 7 is used to lift the wastewater upward.

[0059] The piston disc 7 is fixedly provided with a Velcro 71 on its top surface, and the top surface of the Velcro 71 is fixedly provided with a plurality of plastic filaments 72 for adsorbing sewage sediments.

[0060] The drive shaft 51 is externally fixedly sleeved with a fixed sleeve 6, and the fixed sleeve 6 is externally fixedly connected with a Z-shaped rod 61. The Z-shaped rod 61 is internally provided with a discharge channel 62, which passes through both ends of the discharge channel 62 and is connected to the hollow interior of the drive shaft 51.

[0061] The top end of the fixed shaft 52 is fixedly connected to a blocking disk 53, and the inside of the drive shaft 51 is fixedly provided with a partition disk 54 that fits against the blocking disk 53. The blocking disk 53 and the partition disk 54 are respectively provided with a first material hole 531 and a second material hole 541 that are staggered.

[0062] The top end of the drive shaft 51 is provided with an opening to facilitate the injection of oil-water separator.

[0063] During operation, an appropriate amount of oil-water separator is pre-filled into the drive shaft 51, and then the motor 5 is started. The motor 5 will drive the drive shaft 51 to rotate slowly and uniformly. When the drive shaft 51 rotates, the partition plate 54 set inside the drive shaft 51 will rotate together with the fixed shaft 52. When the second material hole 541 coincides with the first material hole 531, the oil-water separator will fall and flow out along the discharge channel 62 set inside the Z-shaped rod 61. The Z-shaped rod 61 will rotate together with the drive shaft 51. By setting the columnar Z-shaped rod 61, not only can the oil-water separator be fully contacted with the sewage, but the contact area with the sewage can also be reduced to prevent the sewage from turning upside down and causing the oil / water to not separate easily. By setting the Z-shaped rod 61 to a "Z" shape, the backflow of sewage into the drive shaft 51 can be reduced. In addition to the separated oil, the sewage also contains a large amount of water-oil mixture. By adding the oil-water separator and mixing it with the sewage, the oil-water separator will react quickly with the oil, causing the oil or oily substances in the water-oil mixture to precipitate out, thus resulting in separation.

[0064] Because the oil in the water-oil mixture separates into layers, the original sewage level will continue to decrease. The piston disc 7, which is threaded onto the bottom of the drive shaft 51, will gradually rise under the limiting action of the limiting post 8 when the drive shaft 51 rotates, thereby raising the sewage level and allowing the first metal foil 42 and the second metal foil 43 to continue to contact and form a circuit, so that the water pump 3 can continuously extract the separated waste oil. Example

[0065] The wastewater treatment assembly also includes a return trough 24. The inner wall of the treatment cylinder 2 is provided with an annular return trough 24. A filter screen 241 aligned with the inner wall of the treatment cylinder 2 is fixedly installed on the outside of the return trough 24. The return trough 24 is divided into upper and lower regions, and the pore size of the upper region of the return trough 24 is larger than that of the lower region.

[0066] During operation, the piston disc 7 continuously moves upward until it contacts the Z-shaped rod 61. At this point, the piston disc 7 is limited and cannot move further upward. The motor 5 will temporarily stop operating due to this resistance. At this time, the piston disc 7 is exactly at the center of the filter screen 241. The piston disc 7 serves as a dividing line, dividing the upper and lower areas of the filter screen 241. Therefore, the sewage accumulated on the top surface of the piston disc 7 will flow into the interior of the return tank 24 through the upper part of the filter screen 241 and flow out from the lower part of the filter screen 241 under the action of gravity. By setting the pores of the upper and lower areas of the filter screen 241 to gradually decrease, the impurities in the sewage are filtered in two stages. Since the residual waste oil has a stronger adhesion to the impurity particles, the filter screen 241 will also indirectly separate the residual waste oil during the two-stage filtration of impurities, thereby further improving the sewage treatment effect. Example

[0067] The top of the limiting post 8 is provided with a cavity 81. A T-shaped post 82 is slidably installed inside the cavity 81. The top of the T-shaped post 82 slides through the upper side wall of the cavity 81 and is fixedly provided with a semi-circular extrusion block 84. A spring 83 is fixedly connected between the T-shaped post 82 and the upper side wall of the cavity 81. A pressure ring 63 is fixedly installed at the bottom of the Z-shaped rod 61. The bottom surface of the pressure ring 63 is set as an inclined surface, and the bottom of the pressure ring 63 abuts against the two extrusion blocks 84. The side wall of the cavity 81 is provided with a plurality of bubble holes 85.

[0068] During operation, a pressure ring 63 is set at the bottom of the Z-shaped rod 61. Since the bottom surface of the pressure ring 63 is set as an inclined surface, when the pressure ring 63 rotates with the Z-shaped rod 61, the inclined surface of the pressure ring 63 will intermittently press the extrusion block 84 downward. With the help of the spring 83, the extrusion block 84 will drive the T-shaped column 82 to move up and down inside the cavity 81. By setting the bubble hole 85, when the T-shaped column 82 moves up and down inside the cavity 81, it will generate tiny bubbles through the bubble hole 85. The emulsified oil particles in the water will adhere to the generated tiny bubbles and float to the surface of the water with the bubbles, thereby further improving the oil / water separation effect. Example

[0069] The treatment cylinder 2 has a treatment box 9 integrally formed on one side where the water outlet 23 is provided. A water outlet valve 92 is fixedly provided on the bottom side plate of the treatment box 9. A second cover 91 is fixedly provided on the top of the treatment box 9. A thin rope 93 is movably passed through the second cover 91. Both ends of the thin rope 93 extend into the interior of the treatment box 9 and multiple oil-absorbing papers 94 are fixedly glued in layers.

[0070] During operation, the starter motor 5 drives the drive shaft 51 to rotate in the opposite direction, and the piston disc 7 moves down to its original position. During the downward movement of the piston disc 7, it assists in squeezing the sewage out of the outlet hole 23. This not only increases the speed at which the sewage flows into the treatment tank 9, but also prevents the sewage from flowing back into the treatment tank 9. This causes the sewage level in the treatment tank 9 to rise continuously and come into contact with the oil-absorbing paper 94. The oil-absorbing paper 94 can absorb the last remaining waste oil in the sewage, thereby further improving the overall sewage treatment effect of the present invention. After standing for a few minutes, the outlet valve 92 is opened to obtain water that has been separated from waste oil and impurities.

[0071] A method for using an environmentally friendly wastewater treatment oil-water separation device, comprising the following steps:

[0072] S1. Extract waste oil and slowly introduce wastewater into the treatment cylinder 2 through the water inlet pipe 22. Since the plastic sheet 44 is made of a plastic material with a density less than water and greater than oil, the plastic sheet 44 will only float on the water surface and will not float on the oil surface. As the wastewater is introduced, it will rise continuously. The plastic sheet 44 drives the telescopic rod 41 to slide inside the telescopic cylinder 4 until the second metal foil 43 contacts the first metal foil 42 to form a circuit. The water pump 3 starts and gradually sucks out the waste oil through the oil extraction pipe 31. The water surface is always 1 mm below the bottom of the oil extraction pipe 31, which greatly reduces the mixing and intake of wastewater.

[0073] S2. Separate the oil-water mixture. Pre-fill the inside of the drive shaft 51 with an appropriate amount of oil-water separator. Start the motor 5. The motor 5 will drive the drive shaft 51 to rotate slowly and uniformly. When the drive shaft 51 rotates, the partition disk 54 set inside the drive shaft 51 will rotate together with the fixed shaft 52. When the second material hole 541 coincides with the first material hole 531, the oil-water separator will fall and flow out along the discharge channel 62 set inside the Z-shaped rod 61. The oil-water separator will react quickly with the oil, causing the oil or oily substances in the water-oil mixture to precipitate out, thus resulting in stratification.

[0074] S3. Raise the sewage water level. Since the oil in the water-oil mixture has separated into layers, the original sewage level will continue to decrease. Through the piston disc 7 threaded to the bottom of the drive shaft 51, when the drive shaft 51 rotates, the piston disc 7 will gradually rise under the limiting action of the limiting post 8, thereby raising the sewage water level, so that the first metal foil 42 and the second metal foil 43 continue to contact to form a circuit, thereby allowing the water pump 3 to continuously extract the separated waste oil.

[0075] S4. Bubble generation accelerates oil / water separation. The bottom surface of the pressure ring 63 is set as an inclined surface. When the pressure ring 63 rotates together with the Z-shaped rod 61, the inclined surface of the pressure ring 63 will intermittently press the extrusion block 84 downward. With the help of the spring 83, the extrusion block 84 will drive the T-shaped column 82 to move up and down inside the cavity 81, thereby generating tiny bubbles through the bubble hole 85. The emulsified oil particles in the water will adhere to the generated tiny bubbles and float to the water surface with the bubbles.

[0076] S5. The wastewater is returned and filtered. The piston disk 7 continues to move upward until it is limited by the Z-shaped rod 61 and can no longer move upward. The motor 5 temporarily stops running. At this time, the piston disk 7 is exactly in the center of the filter screen 241. The piston disk 7 serves as the dividing line. The wastewater accumulated on the top surface of the piston disk 7 will flow into the interior of the return tank 24 through the upper part of the filter screen 241 and flow out from the lower part of the filter screen 241 under the action of gravity. By setting the pores of the upper and lower parts of the filter screen 241 to gradually decrease, the impurities in the wastewater are filtered in two stages.

[0077] S6. Adsorb residual waste oil. Start motor 5 drives drive shaft 51 to rotate in the opposite direction. Piston disc 7 moves down and returns to its original position. Piston disc 7 will assist in squeezing the sewage out of outlet hole 23, so that the liquid level of sewage in treatment tank 9 continues to rise and comes into contact with oil-absorbing paper 94. Oil-absorbing paper 94 can adsorb the last remaining waste oil in sewage.

[0078] Working principle: Wastewater to be treated is slowly introduced into the treatment cylinder 2 through the inlet pipe 22. Because the piston disc 7 is tightly fitted to the inner wall of the treatment cylinder 2, and the outlet hole 23 is located below the piston disc 7, the wastewater will not flow out but will accumulate above the piston disc 7. The oil and water in the wastewater will separate, with the oil level higher than the water level. However, because the plastic sheet 44 is made of a plastic material with a density less than water but greater than oil, when the waste oil first comes into contact with the plastic sheet 44, the plastic sheet 44 will not float. When the plastic sheet 44 comes into contact with the water surface, it will rise continuously as the wastewater is introduced, thereby driving the expansion joint made of the connected lightweight material. The rod 41 slides inside the telescopic cylinder 4 until the second metal foil 43 at the top of the telescopic rod 41 contacts the first metal foil 42 to form a circuit, at which point the water pump 3 will start and the sewage will stop flowing in. Since the bottom of the oil suction pipe 31 is located 1 mm above the horizontal plane of the plastic sheet 44 when the second metal foil 43 contacts the first metal foil 42, when the water pump 3 starts, the oil above the sewage will be gradually sucked out by the water pump 3 through the oil suction pipe 31, while the water surface is always 1 mm below the bottom of the oil suction pipe 31, thereby greatly reducing the mixing and suction of sewage, thus improving the oil / water separation effect, and the structure is simple and ingenious.

[0079] A suitable amount of oil-water separator is pre-filled into the drive shaft 51. Then, the motor 5 is started. The motor 5 will drive the drive shaft 51 to rotate slowly and uniformly. When the drive shaft 51 rotates, the partition plate 54 set inside the drive shaft 51 will rotate together with the fixed shaft 52. When the second material hole 541 coincides with the first material hole 531, the oil-water separator will fall and flow out along the discharge channel 62 set inside the Z-shaped rod 61. The Z-shaped rod 61 will rotate together with the drive shaft 51. By setting the columnar Z-shaped rod 61, not only can the oil-water separator be fully contacted with the sewage, but the contact area with the sewage can also be reduced to prevent the sewage from turning upside down and causing the oil / water to not separate easily. By setting the Z-shaped rod 61 to a "Z" shape, the backflow of sewage into the drive shaft 51 can be reduced. In addition to the separated oil, the sewage also contains a large amount of water-oil mixture. By adding the oil-water separator and mixing it with the sewage, the oil-water separator will react quickly with the oil, causing the oil or oily substances in the water-oil mixture to precipitate out, thus resulting in separation.

[0080] Because the oil in the water-oil mixture separates into layers, the original sewage level will continue to decrease. The piston disc 7, which is threaded onto the bottom of the drive shaft 51, will gradually rise under the limiting action of the limiting post 8 when the drive shaft 51 rotates, thereby raising the sewage level and allowing the first metal foil 42 and the second metal foil 43 to continue to contact and form a circuit, so that the water pump 3 can continuously extract the separated waste oil.

[0081] By setting a pressure ring 63 at the bottom of the Z-shaped rod 61, since the bottom surface of the pressure ring 63 is set as an inclined surface, when the pressure ring 63 rotates with the Z-shaped rod 61, the inclined surface of the pressure ring 63 will intermittently press the extrusion block 84 downward. With the help of the spring 83, the extrusion block 84 will drive the T-shaped column 82 to move up and down inside the cavity 81. By setting bubble holes 85, when the T-shaped column 82 moves up and down inside the cavity 81, it will generate tiny bubbles through the bubble holes 85. The emulsified oil particles in the water will adhere to the generated tiny bubbles and float to the water surface with the bubbles, thereby further improving the oil / water separation effect.

[0082] After most of the waste oil in the sewage is extracted by the water pump 3, the piston disc 7 will continue to move upward until it contacts the Z-shaped rod 61. At this point, the piston disc 7 is limited and cannot move upward further. The motor 5 will temporarily stop operating due to this resistance. At this time, the piston disc 7 is exactly at the center of the filter screen 241. The piston disc 7 serves as a dividing line, separating the upper and lower areas of the filter screen 241. Therefore, the sewage accumulated on the top surface of the piston disc 7 will flow into the interior of the return tank 24 through the upper area of ​​the filter screen 241 and flow out from the lower area of ​​the filter screen 241 under the action of gravity. By setting the pores of the upper and lower areas of the filter screen 241 to gradually decrease, impurities in the sewage are filtered in two stages. Because the residual waste oil has a stronger adhesion to impurity particles, This filter 241 also indirectly separates residual waste oil during the two-stage filtration of impurities, thereby further improving the sewage treatment effect. The sewage will eventually flow to the bottom of the piston plate 7, and only the sediment and impurities in the sewage will remain on the top surface of the piston plate 7. By setting long plastic filaments 72 on the top surface of the piston plate 7, not only can most of the sediment and impurities be blocked during the sewage flow to the filter 241, but also the impurities remaining on the surface of the Z-shaped rod 61 can be cleaned during the subsequent downward movement. The plastic filaments 72 are set on the top surface of the piston plate 7 by Velcro 71, which makes it easy to peel off the plastic filaments 72 attached to the Velcro 71 with a tool after opening the first cover 21, thereby making it easy to clean the sewage impurities on the top surface of the piston plate 7.

[0083] A few minutes later, the motor 5 starts to drive the drive shaft 51 to rotate in the opposite direction, and the piston disc 7 moves down to its original position. During the downward movement of the piston disc 7, it will help to squeeze the sewage out of the outlet hole 23. This not only increases the speed at which the sewage flows into the treatment tank 9, but also prevents the sewage from flowing back into the treatment tank 9. This causes the sewage level in the treatment tank 9 to rise continuously and come into contact with the oil-absorbing paper 94. The oil-absorbing paper 94 can absorb the last remaining waste oil in the sewage, thereby further improving the overall sewage treatment effect of the present invention.

[0084] After letting it stand for a few minutes, open the water outlet valve 92 to get water that has been separated from waste oil and impurities.

[0085] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly wastewater treatment oil-water separation device, comprising a base (1), a treatment cylinder (2) mounted on the top of the base (1), and an inlet pipe (22) penetrating one side wall of the top of the treatment cylinder (2), characterized in that, Also includes: An oil suction assembly includes a water pump (3). A first cover (21) is fixedly installed on the top of the processing cylinder (2). The water pump (3) is fixedly installed on the top of the first cover (21). The oil suction end of the water pump (3) is fixedly connected to an oil suction pipe (31) extending to the inside of the processing cylinder (2). A telescopic cylinder (4) is fixedly installed at the bottom of the first cover (21). A telescopic rod (41) made of lightweight material is slidably sleeved at the bottom of the telescopic cylinder (4). A plastic sheet (44) is fixedly installed at the bottom of the telescopic rod (41). The density value of the plastic sheet (44) is between the density value of water and the density value of oil. The telescopic rod (41) has a density value between the density value of water and the density value of oil. A second metal foil (43) is fixedly installed at the top, and a first metal foil (42) is fixedly installed on the inner wall of the top of the telescopic cylinder (4). The first metal foil (42) and the second metal foil (43) are electrically connected to the water pump (3). The bottom horizontal plane of the oil extraction pipe (31) is set 1 mm above the horizontal plane of the plastic sheet (44) when the second metal foil (43) and the first metal foil (42) are in contact. The second metal foil (43) and the first metal foil (42) are in contact to form a circuit, and the water pump (3) is started. The sewage treatment component, which is used to assist the oil level to rise and integrate secondary filtration of sewage, is fixedly installed inside the treatment cylinder (2). The wastewater treatment assembly includes a motor (5), and a water outlet (23) is provided on one side wall of the bottom of the treatment cylinder (2). The motor (5) is fixedly installed on the top of the first cover (21). The output end of the motor (5) is detachably fixedly connected to a drive shaft (51) with a hollow structure. A fixed shaft (52) is fixedly connected to the center of the bottom plate of the treatment cylinder (2). The bottom end of the drive shaft (51) extends into the interior of the treatment cylinder (2) and is seamlessly and movably sleeved on the outside of the fixed shaft (52). The bottom end of the drive shaft (51) is threadedly sleeved with a piston disc (7) that is seamlessly in contact with the inner wall of the treatment cylinder (2). The piston disc (7) slides through two limiting posts (8). The bottom end of the limiting posts (8) is fixedly connected to the bottom plate of the treatment cylinder (2). The piston disc (7) is used to lift the wastewater upward. The drive shaft (51) is fixedly sleeved with a fixed sleeve (6), and a Z-shaped rod (61) is fixedly connected to the outside of the fixed sleeve (6). The Z-shaped rod (61) is provided with a discharge channel (62) inside. The discharge channel (62) passes through both ends of the discharge channel (62) and is connected to the hollow interior of the drive shaft (51). The top end of the fixed shaft (52) is fixedly connected to a blocking disc (53), and the inside of the drive shaft (51) is fixedly provided with a partition disc (54) that fits against the blocking disc (53). The blocking disc (53) and the partition disc (54) are respectively provided with a first material hole (531) and a second material hole (541) that are staggered. The top end of the drive shaft (51) is provided with an opening to facilitate the injection of oil-water separator.

2. The environmentally friendly wastewater treatment oil-water separation device according to claim 1, characterized in that: The wastewater treatment assembly also includes a return trough (24). The inner wall of the treatment cylinder (2) is provided with an annular return trough (24). A filter screen (241) aligned with the inner wall of the treatment cylinder (2) is fixedly provided on the outside of the return trough (24). The return trough (24) is divided into upper and lower regions. The pore size of the upper region of the return trough (24) is larger than that of the lower region.

3. The environmentally friendly wastewater treatment oil-water separation device according to claim 2, characterized in that: The piston disc (7) is fixedly provided with a Velcro (71) on its top surface, and the top surface of the Velcro (71) is fixedly provided with multiple plastic filaments (72) for adsorbing sewage sediment.

4. The environmentally friendly wastewater treatment oil-water separation device according to claim 3, characterized in that: The top of the limiting post (8) is provided with a cavity (81), and a T-shaped post (82) is slidably installed inside the cavity (81). The top of the T-shaped post (82) slides through the upper side wall of the cavity (81) and is fixedly provided with a semi-circular extrusion block (84). A spring (83) is fixedly connected between the T-shaped post (82) and the upper side wall of the cavity (81). A pressure ring (63) is fixedly installed at the bottom of the Z-shaped rod (61). The bottom surface of the pressure ring (63) is set as an inclined surface, and the bottom of the pressure ring (63) abuts against the two extrusion blocks (84). The side wall of the cavity (81) is provided with multiple bubble holes (85).

5. The environmentally friendly wastewater treatment oil-water separation device according to claim 4, characterized in that: The treatment cylinder (2) has a treatment box (9) integrally formed on one side with a water outlet (23). A water outlet valve (92) is fixedly installed on one side plate at the bottom of the treatment box (9). A second cover (91) is fixedly installed on the top of the treatment box (9). A thin rope (93) is movably passed through the second cover (91). Both ends of the thin rope (93) extend into the interior of the treatment box (9) and multiple oil-absorbing papers (94) are fixedly glued in layers.

6. A method of using an environmentally friendly wastewater treatment oil-water separation device, applied to the environmentally friendly wastewater treatment oil-water separation device according to any one of claims 1-5, characterized in that, The method of using the environmentally friendly wastewater treatment oil-water separation device includes the following steps: S1. Extract waste oil and slowly introduce sewage into the treatment cylinder (2) through the water inlet pipe (22). Since the plastic sheet (44) is made of a plastic material with a density less than water and greater than oil, the plastic sheet (44) will only float on the water surface and will not float on the oil surface. As the sewage is introduced, it will rise continuously. The plastic sheet (44) drives the telescopic rod (41) to slide inside the telescopic cylinder (4) until the second metal foil (43) contacts the first metal foil (42) to form a circuit. The water pump (3) starts and gradually sucks out the waste oil through the oil extraction pipe (31). The water surface is always 1 mm below the bottom of the oil extraction pipe (31), which greatly reduces the mixing and intake of sewage. S2. Separate the oil-water mixture. Pre-fill the inside of the drive shaft (51) with an appropriate amount of oil-water separator. Start the motor (5). The motor (5) will drive the drive shaft (51) to rotate slowly at a uniform speed. When the drive shaft (51) rotates, the partition disk (54) set inside the drive shaft (51) will rotate together with the fixed shaft (52). When the second material hole (541) coincides with the first material hole (531), the oil-water separator will fall and flow out along the discharge channel (62) set inside the Z-shaped rod (61). The oil-water separator will react quickly with the oil, causing the oil or oily substances in the water-oil mixture to precipitate out, thus resulting in stratification. S3. Raise the sewage water level. Since the oil in the water-oil mixture has separated into layers, the original sewage level will continue to decrease. The piston disc (7) is threaded onto the bottom of the drive shaft (51). When the drive shaft (51) rotates, the piston disc (7) will gradually rise under the limiting action of the limiting post (8), thereby raising the sewage water level. This allows the first metal foil (42) and the second metal foil (43) to continue to contact each other and form a circuit, so that the water pump (3) can continuously extract the separated waste oil. S4. Bubble generation accelerates oil / water separation. The bottom surface of the pressure ring (63) is set as an inclined surface. When the pressure ring (63) rotates together with the Z-shaped rod (61), the inclined surface of the pressure ring (63) will intermittently press down on the extrusion block (84). With the help of the spring (83), the extrusion block (84) will drive the T-shaped column (82) to move up and down in the cavity (81), thereby generating tiny bubbles through the bubble hole (85). The emulsified oil particles in the water will adhere to the generated tiny bubbles and float to the water surface with the bubbles. S5. The wastewater is returned and filtered. The piston disc (7) continues to move upward until the piston disc (7) is limited by the Z-shaped rod (61) and cannot move upward. The motor (5) temporarily stops running. At this time, the piston disc (7) is exactly in the center of the filter screen (241). The piston disc (7) serves as the dividing line. The wastewater accumulated on the top surface of the piston disc (7) will flow into the interior of the return tank (24) through the upper part of the filter screen (241) and flow out from the lower part of the filter screen (241) under the action of gravity. By setting the pores of the upper and lower parts of the filter screen (241) to gradually decrease, the impurities in the wastewater are filtered in two stages. S6. Adsorb residual waste oil. Start the motor (5) to drive the drive shaft (51) to rotate in the opposite direction. The piston disc (7) moves down and returns to its position. The piston disc (7) will help squeeze the sewage out of the outlet hole (23), so that the liquid level of the sewage in the treatment tank (9) continues to rise and comes into contact with the oil-absorbing paper (94). The oil-absorbing paper (94) can adsorb the last residual waste oil in the sewage.

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