A plastic waste white oil regeneration device

Abstract

The utility model relates to waste oil regeneration technical field discloses a kind of plastic waste white oil regeneration equipment, including bottom plate, the recovery assembly is arranged at the top of bottom plate, the recovery assembly includes caustic wash tank, water wash tank, clay refining tank, the stirring assembly is uniformly arranged in caustic wash tank, water wash tank, clay refining tank, the heating coil is fixedly connected in caustic wash tank and clay refining tank outer wall, the input pipe is fixedly connected in caustic wash tank, water wash tank, clay refining tank outer wall top, the conveying pipe is arranged between caustic wash tank, water wash tank, clay refining tank.In the utility model, first waste white oil and sodium hydroxide solution are reacted in caustic wash tank, then flow into water wash tank, cleaning and phase separation are carried out, oil phase enters clay refining tank, active clay is added for adsorption, after filtration, regenerated white oil is obtained, the effect of efficient recovery of white oil is achieved, the problem of complex and large pollution of traditional recovery process is solved, and the white oil recovery rate and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of waste oil recycling technology, and in particular to a plastic waste white oil recycling device. Background Technology

[0002] In the plastics processing industry, waste white oil loses its usability due to high-temperature oxidation and impurity contamination. Direct disposal not only wastes resources but also causes environmental pollution. Therefore, developing efficient waste white oil recycling technology has become a key focus of the industry. Waste white oil recycling equipment needs to achieve functions such as impurity removal, decolorization and deodorization, and oil separation. The stability of the process, energy consumption level, and ease of operation directly affect the quality of recycled oil and production costs. With the increasing environmental protection requirements, traditional high-pollution and low-efficiency recycling processes can no longer meet the needs. Developing integrated and low-energy-consumption new recycling equipment is of great practical significance.

[0003] Existing waste white oil regeneration equipment typically employs a segmented process. For example, acidic impurities are neutralized through an acid washing tank, volatile substances in the oil are separated using a distillation tower, and solid particles are removed through a conventional filtration device. The technical principle is mainly based on a combination of chemical neutralization, high-temperature distillation, and physical filtration. It relies on manual control of parameters such as temperature and stirring time in each stage. The equipment structure is mostly composed of independent tanks connected in series, lacking automated linkage design, and the process connection depends on manual operation.

[0004] However, existing technologies have significant drawbacks: traditional regeneration processes require multiple manual steps, are complex, and consume a lot of energy. In particular, the high-temperature distillation stage can easily lead to secondary oxidation of the oil, affecting the quality of the regenerated oil. In addition, the acidic wastewater generated by traditional pickling processes is costly to treat and can easily cause secondary pollution. These problems result in low regeneration efficiency, high operating costs, and unstable quality of regenerated oil in existing equipment, making it impossible to efficiently solve the problem of recycling waste white oil. Therefore, a plastic waste white oil regeneration equipment is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a plastic waste white oil recycling device, which aims to improve the problems of complex recycling processes and high pollution in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A plastic waste white oil recycling device includes a base plate, a recycling component is provided on the top of the base plate, and a filter component is provided on one side of the recycling component;

[0008] The recycling assembly includes an alkaline washing tank, a water washing tank, and a clay refining tank. The bottoms of the alkaline washing tank, water washing tank, and clay refining tank are all fixedly connected to the top of the base plate. Each of the alkaline washing tank, water washing tank, and clay refining tank is equipped with a stirring assembly. Heating coils are fixedly connected to the outer walls of the alkaline washing tank and the clay refining tank. An input pipe is fixedly connected to the top of the outer walls of each of the alkaline washing tank, water washing tank, and clay refining tank. A conveying pipe is provided between the alkaline washing tank, water washing tank, and clay refining tank. A discharge pipe is fixedly connected to the bottom of the clay refining tank, and the side wall of the discharge pipe is fixedly connected to the outer wall of the filter assembly.

[0009] As a further description of the above technical solution:

[0010] A control console is fixedly connected to the top of the base plate. The control console is located between the washing tank and the clay refining tank. The control console is used to control the equipment operating parameters.

[0011] As a further description of the above technical solution:

[0012] The stirring assembly includes stirring paddles, and multiple stirring paddles are located inside the alkali washing tank, water washing tank, and kaolin refining tank. A drive motor is provided on the top of the stirring paddle, and the bottom of the multiple drive motors is fixedly connected to the center position of the top of the alkali washing tank, water washing tank, and kaolin refining tank. The output end of the multiple drive motors is fixedly connected to one end of the top of the multiple stirring paddles.

[0013] As a further description of the above technical solution:

[0014] The filtration assembly includes a filter box, a vacuum pump is installed on the side of the filter box, the bottom of the filter box and the vacuum pump are fixedly connected to the top of the base plate, and a pipeline is provided between the filter box and the vacuum pump for interconnection.

[0015] As a further description of the above technical solution:

[0016] A sealing cover is slidably connected to the top of the filter box, and a base is fixedly connected inside the filter box.

[0017] As a further description of the above technical solution:

[0018] Multiple filter plates are slidably connected inside the base. The filter plates are arranged in an array. Each filter plate has a handle fixedly connected to its top and a locking block fixedly connected to its bottom.

[0019] As a further description of the above technical solution:

[0020] Each locking block has a locking box on its outer wall, and the outer wall of each locking box is fixedly connected to the inside of the base. Each locking block has a limit ball on its left and right sides.

[0021] As a further description of the above technical solution:

[0022] Each limiting ball has a limiting plate fixedly connected to its side wall. Both the limiting plate and the outer wall of the limiting ball are slidably connected inside the locking box. Each limiting plate has a limiting spring on its side. One end of the limiting spring is fixedly connected inside the locking box, and the other end of the limiting spring is fixedly connected to the side wall of the limiting plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, waste white oil and sodium hydroxide solution are first heated and stirred in an alkaline washing tank. After the reaction, the mixture flows into a water washing tank and is rinsed with deionized water. After standing and phase separation, the oil phase enters a clay refining tank, where activated clay is added and the temperature is controlled while stirring. After adsorption is completed, the mixture is pumped into a filter box for filtration. The clay is then separated by vacuum filtration to obtain regenerated white oil. This achieves the effect of efficient white oil recovery, solves the problems of complex and polluting traditional recycling processes, and improves the white oil recovery rate and regeneration quality.

[0025] 2. In this utility model, the operator first opens the sealing cover, holds the handle and lifts the filter plate upwards. The bottom locking block disengages from the locking box to unlock. Then, the new filter plate is inserted into the base, the locking block is inserted into the locking box, the limit spring pushes the limit plate and the limit ball back to reset, and the limit ball is locked into the recesses on both sides of the locking block. This achieves the effect of quick filter replacement, solves the problem of cumbersome filter replacement in the filter box, and improves equipment maintenance efficiency. Attached Figure Description

[0026] Figure 1 This is a perspective view of a plastic waste white oil recycling device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the white clay refining tank structure of a plastic waste white oil recycling equipment proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the filter box structure of a plastic waste white oil recycling device proposed in this utility model;

[0029] Figure 4 This is a side sectional view of the base structure of a plastic waste white oil recycling device proposed in this utility model;

[0030] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Base plate; 2. Control console; 3. Alkali washing tank; 4. Heating coil; 5. Drive motor; 6. Agitator; 7. Conveying pipe; 8. Water washing tank; 9. White clay refining tank; 10. Discharge pipe; 11. Input pipe; 12. Filter box; 13. Vacuum pump; 14. Sealing cover; 15. Base; 16. Filter plate; 17. Handle; 18. Locking block; 19. Locking box; 20. Limiting spring; 21. Limiting plate; 22. Limiting ball. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a plastic waste white oil recycling device, including a base plate 1, which is a basic load-bearing structure. The base plate 1 is welded from a 20mm thick Q235B steel plate, and the surface is sandblasted and then coated with anti-rust paint to stably support the entire device. A recycling component is provided on the top of the base plate 1, which is responsible for pretreatment processes such as alkaline washing, water washing and white clay refining of the waste white oil. A filter component is provided on one side of the recycling component for solid-liquid separation of the white oil after white clay refining.

[0035] The recycling system comprises an alkaline washing tank (3), a water washing tank (8), and a clay refining tank (9). These three tanks form the core processing unit. All three tanks are welded from 10mm thick 316L stainless steel, providing excellent corrosion resistance. The bottoms of the alkaline washing tank (3), water washing tank (8), and clay refining tank (9) are all fixed to the top of the base plate (1) using anchor bolts. Each tank is equipped with a stirring assembly to promote thorough mixing and reaction of the materials. The water washing tank (8) is used for water washing and desalination of the white oil after alkaline washing. Its bottom is equipped with a 30°-45° inclined phase-separating baffle (made of stainless steel with a smooth surface to reduce oil adhesion). A wastewater discharge port is located below the baffle for easy discharge of separated wastewater. The alkaline washing tank (3) is used for alkaline washing of the waste white oil. In the deacidification process, the stirring components inside the tank rotate at 300-800 r / min to ensure uniform mixing of waste oil and alkaline solution. The clay refining tank 9, used for clay adsorbing impurities, has a stirring component rotating at 400-600 r / min to ensure full contact between the clay and oil, adsorbing pigments, odors, and colloidal substances. Both the alkaline washing tank 3 and the clay refining tank 9 have heating coils 4 welded to their outer walls. These heating coils 4 are made of seamless 304 stainless steel and can be circulated with heat transfer oil or steam to heat the materials inside the tanks. The temperature can be precisely controlled between 25℃ and 80℃. Heating the liquid inside the tanks through heat conduction promotes the acid-base neutralization reaction. An input pipe 1 is fixedly connected to the top of the outer walls of the alkaline washing tank 3, water washing tank 8, and clay refining tank 9. 1. The input pipe 11 is made of seamless 304 stainless steel and is used to transport materials such as waste white oil, sodium hydroxide solution, deionized water, and activated clay to the corresponding tanks. A conveying pipe 7, also made of seamless 304 stainless steel, is installed between the alkaline washing tank 3, the water washing tank 8, and the clay refining tank 9. This conveying pipe 7 is used to transport the processed materials to the next process. A discharge pipe 10 is fixedly connected to the bottom of the clay refining tank 9, and its side wall is fixedly connected to the outer wall of the filter assembly. This discharge pipe 10 is used to transport the refined white oil to the filter box 12. A control console 2 is fixedly connected to the top of the base plate 1. The control console 2 is located between the water washing tank 8 and the clay refining tank 9. The control console 2 integrates a PLC control system, frequency converter, relays, and other electrical components to control the drive motor 5 at 5 revolutions per minute. The operating parameters of the equipment, such as speed, heating coil 4 temperature, and vacuum pump 13 start / stop, are existing technologies and will not be elaborated here. The stirring assembly includes a stirring paddle 6, which is made of 316L stainless steel and is designed as a slanted turbine blade. Multiple stirring paddles 6 are located inside the alkali washing tank 3, water washing tank 8, and clay refining tank 9. A drive motor 5 is installed on the top of the stirring paddle 6. The drive motor 5 is a three-phase asynchronous motor, which is existing technology and will not be elaborated here. The bottom of multiple drive motors 5 is fixedly connected to the center of the top of the alkali washing tank 3, water washing tank 8, and clay refining tank 9 by bolts to provide rotational power for the stirring paddles 6. The output ends of multiple drive motors 5 are fixedly connected to one end of the top of multiple stirring paddles 6 by couplings. The filter assembly includes a filter box 12.The filter box 12 is welded from 304 stainless steel and contains multiple layers of filter media for solid-liquid separation of white oil. A vacuum pump 13, a rotary vane pump, is located on the side of the filter box 12. This pump is used to transfer the white oil and provide negative pressure suction; this is existing technology and will not be described in detail here. Both the filter box 12 and the vacuum pump 13 are fixedly connected to the top of the base plate 1, and are interconnected by piping.

[0036] Specifically, when using the equipment, waste white oil and sodium hydroxide solution (concentration 0.5wt%-2wt%, mass ratio 1:500-1:100) flow into the alkaline washing tank 3 through the input pipe 11. The drive motor 5 drives the stirring paddle 6 to rotate clockwise (taking 500r / min as an example) to make the liquid form a turbulent state. At the same time, the heating coil 4 is heated to 60°C through heat transfer oil and the stirring reaction is maintained for 30 minutes to neutralize acidic impurities and initially decolorize. After the reaction is completed, the oil flows into the water washing tank 8 from the bottom of the alkaline washing tank 3 through the delivery pipe 7. In the washing tank 8, deionized water (added at a rate of 30% to 50% of the waste oil mass) is injected through the inlet pipe 11. The agitator 6 is stirred counterclockwise at a speed of 300 r / min for 1 hour to fully mix the oil and water. After standing for 30 minutes, the oil phase floats to the surface due to the density difference, and the wastewater is discharged through the bottom outlet. The upper oil phase flows into the clay refining tank 9 through the conveying pipe 7. Activated clay is quantitatively added through the inlet pipe 11. The heating coil 4 is heated to 60°C, and the agitator 6 is stirred clockwise at a speed of 500 r / min for 1 hour. The clay adsorbs pigments and odors in the oil. After adsorption is complete, vacuum pump 13 starts to form negative pressure, which draws the oil in the clay refining tank 9 into the filter box 12 through the discharge pipe 10. The oil passes through the filter core plate 16, and the clay particles are trapped. The regenerated white oil is discharged from the outlet of the filter box 12 and transported to the workshop storage tank through the pipeline. In the whole process, the valves of each tank are automatically controlled by the control console 2 to open and close, and the stirring and heating parameters are executed according to the preset program to realize continuous production.

[0037] Reference Figures 3-5A sealing cover 14 is slidably connected to the top of the filter box 12. The sealing cover 14 is made of 304 stainless steel with a brushed surface. It is used to seal the filter box 12 and prevent impurities from entering. A base 15 is fixedly connected inside the filter box 12. The base 15 is made of 316L stainless steel, which is corrosion resistant. It is used to support and fix the filter plates 16. Multiple installation channels for the filter plates 16 are set inside the base 15 through slotting and drilling processes. Multiple filter plates 16 are slidably connected inside the base 15, and a 304 stainless steel frame is used for mounting. The filter media (such as filter paper and filter screen) are composite and pressed together for filtering and purifying white oil. The filter element plates 16 are arranged in an array. Each filter element plate 16 has a handle 17 fixedly connected to its top. The handle 17 is made of 304 stainless steel round steel with a knurled surface to facilitate the operator to lift the filter element plate 16. Each filter element plate 16 has a symmetrical locking block 18 fixedly connected to its bottom. The locking block 18 is made of 45 steel and quenched. It has recessed grooves on both sides to cooperate with the locking box 19 to achieve the desired effect. The filter plate 16 is locked by locking boxes 19 on the outer walls of locking blocks 18. The outer walls of the locking boxes 19 are fixedly connected to the inside of the base 15. Limiting ball 22 mounting cavities are provided on the left and right sides of the locking blocks 18 through milling and drilling processes. Limiting balls 22 are installed inside these cavities. The limiting balls 22 are made of GCr15 bearing steel, with a diameter of 8mm and a surface hardness of HRC60-62. Their outer walls slide against the guide grooves inside the locking boxes 19. Limiting plates 21 are fixedly connected to the side walls of the limiting balls 22. 1. It is made of 304 stainless steel and stamped with a thickness of 2mm. The outer walls of the limiting plate 21 and the limiting ball 22 form a sliding fit with the guide groove inside the locking box 19. The side of the limiting plate 21 is provided with a limiting spring 20. The limiting spring 20 is made of 65Mn spring steel with a wire diameter of 1.5mm. After heat treatment, the elastic coefficient is stable. One end of the limiting spring 20 is fixedly connected to the spring seat preset inside the locking box 19, and the other end of the limiting spring 20 is fixedly connected to the side wall of the limiting plate 21 to provide a reset force for the limiting ball 22.

[0038] Working principle: When using this plastic waste white oil recycling equipment, waste white oil and sodium hydroxide solution first enter the alkaline washing tank 3 through the input pipe 11. Then, the drive motor 5 drives the stirring paddle 6 to rotate, stirring the waste white oil and sodium hydroxide solution. At the same time, the heating coil 4 starts to heat the alkaline washing tank 3. After the reaction, it flows into the water washing tank 8 through the conveying pipe 7. Then, deionized water is added to the alkaline washed white oil in the water washing tank 8. After stirring and mixing at room temperature, it is allowed to stand for phase separation. Then, the wastewater is discharged from the bottom, and the oil phase enters the white clay refining tank 9 through the conveying pipe 7. Activated white clay is added into the white clay refining tank 9 through the input pipe 11 and heated and stirred. After the white clay adsorption is completed, the vacuum pump 13 generates suction to pump the white oil into the filter box 12 for filtration. Finally, it is discharged to the workshop for further processing, thus achieving the effect of efficient white oil recovery.

[0039] When the filter plate 16 inside the filter box 12 needs to be replaced, the operator first opens the sealing cover 14, holds the handle 17, and lifts the filter plate 16 upwards. The locking block 18 at the bottom of the filter plate 16 disengages from the locking box 19 and is unlocked. Then, the new filter plate 16 is inserted into the base 15, and the locking block 18 is inserted back into the locking box 19. The limiting spring 20 pushes the limiting plate 21 and the limiting ball 22 back to their original positions. The limiting ball 22 is engaged in the recesses on both sides of the locking block 18, thereby locking the filter plate 16 and achieving the effect of quickly replacing the filter plate 16.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic waste white oil regeneration apparatus comprising a base plate (1), characterized in that: A recycling component is provided on the top of the base plate (1), and a filter component is provided on one side of the recycling component; The recycling assembly includes an alkaline washing tank (3), a water washing tank (8), and a clay refining tank (9). The bottoms of the alkaline washing tank (3), the water washing tank (8), and the clay refining tank (9) are all fixedly connected to the top of the base plate (1). A stirring assembly is provided inside the alkaline washing tank (3), the water washing tank (8), and the clay refining tank (9). A heating coil (4) is fixedly connected to the outer wall of the alkaline washing tank (3) and the clay refining tank (9). An input pipe (11) is fixedly connected to the top of the outer wall of the alkaline washing tank (3), the water washing tank (8), and the clay refining tank (9). A conveying pipe (7) is provided between the alkaline washing tank (3), the water washing tank (8), and the clay refining tank (9). A discharge pipe (10) is fixedly connected to the bottom of the clay refining tank (9). The side wall of the discharge pipe (10) is fixedly connected to the outer wall of the filter assembly.

2. The plastic waste white oil regeneration apparatus according to claim 1, characterized by: A control console (2) is fixedly connected to the top of the base plate (1). The control console (2) is located between the washing tank (8) and the clay refining tank (9). The control console (2) is used to control the operating parameters of the equipment.

3. The plastic waste white oil regeneration apparatus according to claim 1, characterized by: The stirring assembly includes stirring paddles (6), and multiple stirring paddles (6) are located inside the alkaline washing tank (3), water washing tank (8), and clay refining tank (9). A drive motor (5) is provided on the top of each stirring paddle (6), and the bottom of each drive motor (5) is fixedly connected to the center position of the top of the alkaline washing tank (3), water washing tank (8), and clay refining tank (9). The output end of each drive motor (5) is fixedly connected to one end of the top of each stirring paddle (6).

4. The plastic waste white oil regeneration apparatus according to claim 1, characterized by: The filter assembly includes a filter box (12), a vacuum pump (13) is provided on the side of the filter box (12), the bottom of the filter box (12) and the vacuum pump (13) are both fixedly connected to the top of the base plate (1), and a pipeline is provided between the filter box (12) and the vacuum pump (13) for interconnection.

5. The plastic waste white oil regeneration apparatus according to claim 4, characterized by: The filter box (12) is slidably connected to a sealing cover (14) on the top, and a base (15) is fixedly connected inside the filter box (12).

6. The plastic waste white oil regeneration apparatus according to claim 5, characterized by: The base (15) has multiple filter plates (16) slidably connected inside. The filter plates (16) are arranged in an array. Each filter plate (16) has a handle (17) fixedly connected to its top and a locking block (18) symmetrically connected to its bottom.

7. The plastic waste white oil regeneration apparatus according to claim 6, characterized by: The outer wall of each locking block (18) is provided with a locking box (19), and the outer wall of each locking box (19) is fixedly connected to the inside of the base (15). Limiting balls (22) are provided on both the left and right sides of the locking block (18).

8. The plastic waste white oil regeneration apparatus according to claim 7, characterized by: The side wall of the limiting ball (22) is fixedly connected with a limiting plate (21), the limiting plate (21) and the outer wall of the limiting ball (22) are slidingly connected in the locking box (19), the side edge of the limiting plate (21) is provided with a limiting spring (20), one end of the limiting spring (20) is fixedly connected in the locking box (19), and the other end of the limiting spring (20) is fixedly connected to the side wall of the limiting plate (21).

Images