A pre-treatment device for scrap oil

Abstract

This application discloses a pretreatment device for waste oil refining, including an arched frame and a cleaning water tank. A movable seat on the arched frame corresponds to the cleaning water tank. The movable seat includes a horizontal movable seat and a vertical movable frame, with the vertical movable frame mounted on the horizontal movable seat. A mixing mounting plate is mounted on the movable end of the vertical movable frame, and a drive motor is fixedly mounted on the horizontal end of the mixing mounting plate. The output shaft of the drive motor extends downwards and is connected to the mixing frame. This application uses a horizontal motor to drive a screw mechanism to move the mixing frame back and forth along the length of the water tank, while the vertical motor controls the mixing frame to move up and down within the water tank. Combined with the drive motor driving the mixing frame to rotate at high speed, this achieves three-dimensional full-coverage mixing of the materials in the cleaning water tank. Compared to traditional fixed or unidirectional stirring equipment, this effectively avoids cleaning dead zones.

Description

Technical Field

[0001] This application relates to the field of plastic cleaning technology, specifically a pretreatment device for waste oil refining. Background Technology

[0002] The thermal pyrolysis of waste plastics can convert mixed, contaminated, or physically difficult-to-recycle waste plastics (such as polyethylene PE, polypropylene PP, etc.) into pyrolyzed oil that can replace fossil fuels by pyrolysis under anaerobic conditions at high temperatures, thus turning waste into treasure.

[0003] However, the efficiency and product quality of waste plastic pyrolysis are highly dependent on the purity of the raw materials. Actual recycled waste plastics typically carry large amounts of mud, oil, label residue, moisture, and metallic impurities (such as nails, aluminum foil, and iron filings). If these impurities are not effectively pretreated before entering the pyrolysis system, a series of problems will arise: First, impurities will increase pyrolysis energy consumption and reduce pyrolysis efficiency; second, metallic impurities may catalyze side reactions at high temperatures, affecting oil and gas yields and oil composition, and even causing equipment wear or safety hazards; third, elements such as chlorine and sulfur (if from PVC or other pollutants) may generate corrosive gases such as HCl and SO2 or dioxin-like pollutants during pyrolysis, increasing the difficulty of exhaust gas treatment and environmental risks.

[0004] In existing technologies, the cleaning of waste plastics is often used as a key pretreatment step before pyrolysis. Traditional methods suffer from problems such as static soaking or unidirectional mechanical agitation and incomplete cleaning. Although automated equipment such as spiral cleaners, drum cleaners, and high-pressure water jets are used, conventional equipment has limited removal capabilities for small or embedded dirt and magnetic metal impurities. In addition, most cleaning devices use fixed agitation methods with insufficient freedom of movement, resulting in incomplete cleaning coverage. Summary of the Invention

[0005] The technical problem to be solved by this application is to overcome the existing defects and provide a pretreatment device for waste oil refining, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a pretreatment device for waste oil refining, comprising an arched frame and a cleaning water tank, wherein a movable seat on the arched frame is correspondingly arranged with respect to the cleaning water tank, and the movable seat comprises a horizontal movable seat and a vertical movable frame, wherein the vertical movable frame is arranged on the horizontal movable seat;

[0007] The movable end of the vertical moving frame is equipped with a drive motor, and the output axis of the drive motor extends downward and is connected to the mixing frame.

[0008] The mixing rack has a multi-branch radial structure, including a central hub and multiple stirring arms extending outward from the central hub. Magnetic blades are provided at the ends and middle sections of the stirring arms.

[0009] As a preferred technical solution of this application, the transverse moving seat includes a transverse motor, a transverse slide rail, an intermediate connecting seat, a lower bottom support plate, and a lead screw mechanism. The lower surface of the arch frame is provided with a lower bottom support plate, and the lower surface of the lower bottom support plate is provided with a transverse slide rail. The transverse slide rail is slidably provided with an intermediate connecting seat, which is sleeved with a lead screw nut in the lead screw mechanism. The lead screw mechanism is connected to the output end of the transverse motor located on the right side of the arch frame.

[0010] As a preferred technical solution of this application, the vertical moving frame includes a side frame support plate, a vertical guide rail, a vertical motor and a top frame plate. The side frame support plate is connected to the intermediate connecting seat. The side frame support plate is provided with a vertical guide rail. The upper surface of the vertical guide rail is provided with a top frame plate. The upper end of the top frame plate is provided with a vertical motor.

[0011] As a preferred technical solution of this application, the bottom of the cleaning water tank is inclined, and inlet and outlet are provided at both ends.

[0012] As a preferred technical solution of this application, a rectangular hole is provided on the workbench, the rectangular hole is correspondingly provided with the cleaning water tank, the cleaning water tank is provided with an edge around its perimeter, and a baffle is provided on the inner side of the cleaning water tank, the baffle being made of a flexible material.

[0013] As a preferred technical solution of this application, the magnetic blades are covered with a layer of magnetic material, and the magnetic blades are set at a certain angle relative to the stirring arm.

[0014] Compared with existing technologies, the advantages of this application are as follows: This application uses a horizontal motor to drive a lead screw mechanism to move the mixing rack back and forth along the length of the water tank, while a vertical motor controls the mixing rack to move up and down within the water tank. Combined with the drive motor to rotate the mixing rack at high speed, this achieves three-dimensional, full-coverage mixing of the materials within the cleaning water tank. Compared with traditional fixed or unidirectional mixing equipment, this effectively avoids cleaning dead zones.

[0015] The stirring arm is equipped with magnetic blades with a magnetic material layer. During rotation, it can not only act as a stirring element to enhance the hydraulic shearing effect, but also simultaneously adsorb ferromagnetic metal impurities such as iron nails and iron filings mixed in the plastic; thus preventing metal impurities from entering the subsequent pyrolysis system and causing equipment wear, catalyst deactivation, or oil contamination.

[0016] The magnetic blades are arranged at an angle, which can generate a strong vortex water flow when rotating, enhancing the mutual friction between plastic particles and the flushing and stripping effect of the water flow on dirt.

[0017] The bottom of the cleaning water tank is tilted, which, together with the inlet and outlet, forms a directional water flow circulation. This facilitates the timely discharge of suspended sediment, oil, and other impurities with the water flow, preventing secondary sedimentation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is the main view of this application;

[0020] Figure 3 This is the left view of this application.

[0021] In the diagram: 1. Arched frame, 2. Vertical motor, 3. Top frame plate, 4. Intermediate connecting seat, 5. Horizontal motor, 6. Workbench, 7. Cleaning water tank, 8. Horizontal slide rail, 9. Vertical guide rail, 10. Mixing mounting plate, 11. Drive motor, 12. Mixing rack, 12a. Central hub, 12b. Mixing arm, 13. Magnetic blades, 14. Screw mechanism, 15. Bottom support plate, 16. Side frame support plate. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0023] Please see Figure 1-3 This application provides a technical solution: a pretreatment device for waste oil refining, comprising an arched frame 1 and a cleaning water tank 7, wherein the arched frame 1 supports the entire movable base. The cleaning water tank 7 is disposed within a rectangular hole in the workbench 6, and the tank is made of 304 stainless steel, which has good corrosion resistance.

[0024] The arched frame 1 is equipped with a movable seat, and the movable seat corresponds to the position of the cleaning water tank 7 to ensure the stable operation of the stirring and cleaning process.

[0025] The movable seat includes a horizontal movable seat and a vertical movable frame. The horizontal movable seat is used to drive the vertical movable frame to move horizontally above the cleaning water tank 7, while the vertical movable frame is used to drive the cleaning components to move up and down, so as to achieve stirring and cleaning in a three-dimensional range.

[0026] Specifically, the movable end of the vertical moving frame is provided with a mixing mounting plate 10, and the horizontal end of the mixing mounting plate 10 is fixedly installed with a drive motor 11. The output axis of the drive motor 11 extends downward and is connected to the mixing frame 12.

[0027] The mixing rack 12 adopts a multi-branch radial structure, including a central hub 12a and multiple stirring arms 12b extending outward from the central hub 12a. Magnetic blades 13 are provided at the ends and middle sections of the stirring arms 12b. The mixing rack 12 is driven to rotate by the drive motor 11. During the rotation, the magnetic blades 13 generate turbulent water flow, which, together with the magnetic adsorption effect, achieves the agitation, friction, and adsorption of impurities in the plastic particles, thereby improving the cleaning effect.

[0028] The lateral moving seat includes a lateral motor 5, a lateral slide rail 8, an intermediate connecting seat 4, a lower base plate 15, and a lead screw mechanism 14. The lower base plate 15 is fixedly mounted on the lower surface of the arched frame 1. The lateral slide rail 8 is parallel to the lower surface of the lower base plate 15. The intermediate connecting seat 4 is slidably mounted on the lateral slide rail 8. The intermediate connecting seat 4 is engaged with the lead screw nut of the lead screw mechanism 14. The lead screw mechanism 14 is connected to the output end of the lateral motor 5 located on the right side of the arched frame 1. The lateral motor 5 drives the lead screw mechanism 14 to rotate, thereby causing the intermediate connecting seat 4 to reciprocate along the lateral slide rail 8, realizing the lateral movement of the mixing rack 12 above the water tank 7.

[0029] Furthermore, the vertical moving frame includes a side support plate 16, a vertical guide rail 9, a vertical motor 2, and a top frame plate 3. The side support plate 16 is fixedly connected to the intermediate connecting seat 4. The vertical guide rail 9 is vertically installed on the side support plate 16. The top frame plate 3 is installed on the sliding end of the vertical guide rail 9. The vertical motor 2 is fixed on the top frame plate 3, and the output end of the vertical motor 2 is connected to the mixing mounting plate 10. The vertical motor 2 drives the mixing mounting plate 10 and the mixing rack 12 to move in the vertical direction, thereby achieving cleaning and mixing at different depths.

[0030] The bottom of the cleaning water tank 7 is arranged at an angle, with an inlet and an outlet at each end, which facilitates water circulation during the cleaning process, removes suspended impurities in a timely manner, and improves cleaning efficiency.

[0031] This embodiment also includes a workbench 6 with a rectangular hole corresponding to the position of the cleaning water tank 7, which is embedded in the rectangular hole. The cleaning water tank 7 has edges around its perimeter, allowing it to be stably fixed to the inside of the workbench 6. A flexible baffle is also provided around the inner wall of the cleaning water tank 7 to prevent plastic particles from splashing out of the tank during vigorous stirring, ensuring a clean and safe operating environment.

[0032] Furthermore, the outer surface of the magnetic blade 13 is covered with a layer of magnetic material, and the magnetic blade 13 is arranged at a certain angle relative to the stirring arm 12b. By tilting the blades, a stronger vortex water flow can be formed when the blades rotate, enhancing the stirring intensity; at the same time, the magnetic material layer can adsorb metal impurities in the plastic particles, improving the impurity removal effect.

[0033] In use: First, place the waste plastic to be treated and the cleaning solution into the cleaning tank 7. Start the vertical motor 2, causing the mixing mounting plate 10 and the entire mixing assembly on it to descend, completely immersing the mixing rack 12 in the liquid in the cleaning tank 7. Next, start the drive motor 11, causing the mixing rack 12 to rotate at high speed. The rotating stirring arm 12b and the magnetic blades 13, set at a specific angle, powerfully agitate, mix, and rub the plastic and water, thereby removing dirt from the plastic surface. During this process, the magnetic material layer on the magnetic blades 13 simultaneously adsorbs and captures magnetic metal impurities such as iron nails and iron filings mixed in the plastic.

[0034] To ensure thorough cleaning, the horizontal motor 5 can be activated to drive the entire stirring and lifting mechanism (i.e., the intermediate connecting seat 4 and all components above it) to move back and forth along the horizontal slide rail 8 in the length direction of the cleaning tank 7, thereby achieving comprehensive cleaning and impurity removal of the materials in the entire tank.

[0035] After the cleaning and impurity removal process is completed, the vertical motor 2 rotates in the reverse direction, raising the mixing rack 12 above the liquid surface. At this time, the outlet of the cleaning water tank 7 can be opened to discharge the waste liquid and the cleaned plastic for subsequent dehydration and drying. The metal impurities adsorbed on the magnetic blades 13 can be cleaned up after the mixing rack 12 is raised.

[0036] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for waste oil refining, comprising an arched frame (1) and a cleaning water tank (7), wherein a movable seat on the arched frame (1) is correspondingly arranged with respect to the cleaning water tank (7), characterized in that: The movable seat includes a horizontal movable seat and a vertical movable frame, and the vertical movable frame is provided on the horizontal movable seat; The movable end of the vertical moving frame is equipped with a drive motor (11), and the output shaft of the drive motor (11) extends downward and is connected to the mixing frame (12). The mixing rack (12) has a multi-branch radial structure, including a central hub (12a) and multiple stirring arms (12b) extending outward from the central hub (12a). Magnetic blades (13) are provided at the ends and middle sections of the stirring arms (12b).

2. The pretreatment device for waste oil refining according to claim 1, characterized in that: The transverse moving seat includes a transverse motor (5), a transverse slide rail (8), an intermediate connecting seat (4), a lower bottom support plate (15), and a lead screw mechanism (14). The lower surface of the arch frame (1) is provided with a lower bottom support plate (15), and the lower surface of the lower bottom support plate (15) is provided with a transverse slide rail (8). The transverse slide rail (8) is slidably provided with an intermediate connecting seat (4). The intermediate connecting seat (4) is sleeved with the lead screw nut in the lead screw mechanism (14). The lead screw mechanism (14) is connected to the output end of the transverse motor (5) located on the right side of the arch frame (1).

3. The pretreatment device for waste oil refining according to claim 1, characterized in that: The vertical moving frame includes a side support plate (16), a vertical guide rail (9), a vertical motor (2), and a top frame plate (3). The side support plate (16) is connected to the intermediate connecting seat (4). The side support plate (16) is provided with a vertical guide rail (9). The top frame plate (3) is provided on the upper surface of the vertical guide rail (9). The vertical motor (2) is provided at the upper end of the top frame plate (3).

4. The pretreatment device for waste oil refining according to claim 1, characterized in that: The bottom of the cleaning water tank (7) is inclined, and inlet and outlet are provided at both ends.

5. The pretreatment device for waste oil refining according to claim 1, characterized in that: It also includes a workbench (6), on which a rectangular hole is provided, and a cleaning water tank (7) is corresponding to the rectangular hole. The cleaning water tank (7) has edges around its perimeter, and a baffle is provided on the inner side of the cleaning water tank (7). The baffle is made of flexible material.

6. The pretreatment device for waste oil refining according to claim 1, characterized in that: The magnetic blade (13) is covered with a layer of magnetic material, and the magnetic blade (13) is set at a certain angle relative to the stirring arm (12b).

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