Plasticizer removal device
By using a superparamagnetic particle adsorption method and an electromagnetic coil-controlled plasticizer removal device, the problem of poor plasticizer removal in edible oil has been solved, achieving efficient and low-cost plasticizer removal and improving production efficiency and equipment utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-07
AI Technical Summary
Existing technologies for removing plasticizers from edible oils suffer from poor removal efficiency, complex equipment, and high costs, making it difficult to achieve industrial-scale mass production.
The superparamagnetic particle adsorption method utilizes the special adsorption capacity of superparamagnetic particles for plasticizers, combined with electromagnetic coil control and bubble dispersion technology, to achieve efficient separation and recovery of plasticizers. Pure oil and oil containing plasticizers are stored separately through a one-way oil drain pipe.
It improves the removal efficiency of plasticizers, reduces the complexity and cost of equipment, achieves efficient and low-cost plasticizer removal, reduces impurity residues, and improves production efficiency.
Smart Images
Figure CN224091833U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plasticizer removal devices, specifically a plasticizer removal device. Background Technology
[0002] Plasticizers in edible oils mainly originate from plastic packaging materials, environmental pollution, and introduction during the production, transportation, and storage of raw materials or finished products. These plasticizers can be introduced through various means, such as aging of rubber gaskets in plastic parts of production equipment, oil tanks, pipes, valve interfaces, or aging of steel hoses used for oil delivery. Therefore, there is an urgent need for effective methods and equipment to remove plasticizers from edible oils. Existing technologies typically employ activated carbon adsorption, extraction, and molecular distillation to remove plasticizers from edible oils. However, activated carbon adsorption is not very effective at removing plasticizers and easily leaves impurities inside the container, making complete recovery difficult. While extraction and molecular distillation offer better removal results, they involve complex equipment, high costs, and low production efficiency, making them unsuitable for industrial-scale production. Therefore, we propose a plasticizer removal device. Utility Model Content
[0003] The purpose of this invention is to provide a plasticizer removal device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a plasticizer removal device, comprising an oil storage tank, a pair of removal tanks connected to the bottom of the oil storage tank via a pipe, an electromagnetic coil being sleeved around the outside of each removal tank, a first oil pipe fixedly connected to the top between the two removal tanks, a receiving tank fixedly connected to one end of the first oil pipe, a second oil pipe fixedly connected to the bottom between the two removal tanks, an unremoved tank fixedly connected to one end of the second oil pipe, a conical hood fixedly installed at the bottom inside each removal tank, an air flotation plate fixedly installed at the top of the conical hood, and a bubble dispersion zone formed between the air flotation plate and the conical hood.
[0005] Preferably, a pair of mounting plates are fixedly installed on the top of the oil storage tank, and a cylinder is fixedly connected to the end of each mounting plate. A lifting plate is oscillatingly connected to the bottom of the cylinder. Multiple feed holes are opened on the lifting plate, and the edge of the lifting plate abuts against the inner ring of the tank.
[0006] Preferably, a grate is rotatably connected to the top of the lifting plate near each feed hole, and a storage cavity is opened on the grate. A drain basket is fixedly connected to the top of each decanting tank, and a retaining ring is fixedly installed on the top of the decanting tank. The retaining ring is located inside the decanting tank away from the drain basket.
[0007] Preferably, each grate has an opening that communicates with the storage cavity.
[0008] Preferably, each drain basket has a cleaning pipe connected to one end via a pipe, a motor is fixedly installed at one end of the cleaning pipe, the motor output shaft extends into the cleaning pipe, a spiral blade is sleeved on the motor output shaft, multiple agent pipes are fixedly connected to one side of the cleaning pipe, multiple drain pipes are fixedly connected to the bottom of the cleaning pipe, and the other side of the cleaning pipe is fixedly connected to the removal tank via a pipe.
[0009] Preferably, the height of the air flotation plate above the ground is lower than the height of the second row of oil pipes above the ground, and the height of the retaining ring above the air flotation plate is greater than the height of the first row of oil pipes above the air flotation plate.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] In this invention, after the two removal tanks have been brought to a constant volume for a period of time, the superparamagnetic particles descend. The closer to the top of the removal tank, the lower the proportion of plasticizer in the oil. Therefore, the oil is fed into the receiving tank for storage through a unidirectional first oil pipe. Since the first oil pipe is located at the top of the removal tanks, the oil in the receiving tank has high purity. Simultaneously, a second oil pipe connects the two removal tanks, allowing any oil containing plasticizer that has not been completely adsorbed by the superparamagnetic particles to be discharged into the unremoved tank for storage, so that it can be processed again, thus improving the removal and refining efficiency. Furthermore, the adsorption of plasticizer by the superparamagnetic particles can be controlled by an electromagnetic coil, making recovery convenient. There is a very low probability that the plasticizer will remain on the tank body or in the oil after plasticizer removal, avoiding subsequent specialized impurity removal operations (such as oil filtration). This also ensures that there are no interfering factors during the subsequent plasticizer removal process, thereby reducing costs and increasing efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the internal structure of the removal tank of this utility model;
[0014] Figure 3 This is a schematic diagram of the internal structure of the cleaning tube of this utility model;
[0015] Figure 4 This is a schematic diagram of the comb structure of this utility model.
[0016] In the diagram: 1-Oil storage tank; 2-Electromagnetic coil; 3-Receiving tank; 4-Unremoved tank; 5-First oil drain pipe; 6-Second oil drain pipe; 7-Mounting plate; 8-Cylinder; 9-Removal tank; 10-Cleaning pipe; 11-Motor; 12-Discharge basket; 13-Spiral blade; 14-Agent pipe; 15-Drain pipe; 16-Baffle ring; 17-Lifting plate; 18-Conical cover; 19-Air flotation plate; 20-Grate; 21-Feed hole; 22-Storage chamber. Detailed Implementation
[0017] 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.
[0018] Please see Figure 1-4 This utility model provides a technical solution: a plasticizer removal device, including an oil storage tank 1, a pair of removal tanks 9 connected to the bottom of the oil storage tank 1 by a pipe, an electromagnetic coil 2 wrapped around the outside of each removal tank 9, a first oil pipe 5 fixedly connected to the top between the two removal tanks 9, a receiving tank 3 fixedly connected to one end of the first oil pipe 5, a second oil pipe 6 fixedly connected to the bottom between the two removal tanks 9, an unremoved tank 4 fixedly connected to one end of the second oil pipe 6, a conical cover 18 fixedly installed inside the bottom of each removal tank 9, an air flotation plate 19 fixedly installed on the top of the conical cover 18, and a bubble dispersion zone formed between the air flotation plate 19 and the conical cover 18.
[0019] The pipelines between oil storage tank 1 and descaling tank 9 are both unidirectional transport connections. First, oil is fed into oil storage tank 1 via an oil conveying device. An appropriate amount of superparamagnetic particles (magnetic particles with special adsorption properties for plasticizers; typically employing a three-layer structure: a core of polystyrene providing physical stability, a middle layer encapsulating superparamagnetic iron oxide particles, and an outer layer modified with functional groups (such as carboxyl, amino, or hydrophobic groups) to achieve specific adsorption of the target substance) are placed inside each descaling tank 9. Then, an electromagnetic coil 2 is energized, causing the superparamagnetic particles to become magnetically attracted and suspended inside each descaling tank 9, thereby adsorbing the plasticizers inside each tank 9. Since plasticizers are usually more viscous than oil, the superparamagnetic particles can effectively adhere to the plasticizers. During the adhesion process, the plasticizers separate the oil from the superparamagnetic particles. Then, a bubble generator at the bottom of each descaling tank 9 is activated, allowing bubbles to pass through the conical shroud 18 and the flotation plate 19, thus propelling the oil to tumble inside the descaling tank 9, effectively improving... The superparamagnetic particles have high adhesion efficiency, and a first oil pipe 5 is fixedly installed at the top between the two removal tanks 9. After the two removal tanks 9 have been settled for a period of time, the superparamagnetic particles descend. The closer to the top of the removal tank 9, the lower the proportion of plasticizer in the oil. Therefore, it is input into the receiving tank 3 for storage through the one-way first oil pipe 5. The first oil pipe 5 is located at the top of the removal tank 9, so the receiving tank 3 can store pure oil. At the same time, the bottom of the two removal tanks 9 is connected to the second oil pipe 6, which can discharge the oil that has not been completely adsorbed by the superparamagnetic particles and contains plasticizer into the unremoved tank 4 for storage. The oil that has been removed and refined and the oil containing plasticizer are stored separately, which can reduce the probability of oil mixing in the receiving tank 3 and the removal tank 9. The superparamagnetic particles adsorb plasticizer without leaving impurities on the tank body or in the oil that has been removed from plasticizer, avoiding the need for subsequent special impurity removal operations. There are no interfering factors in the oil filtration plasticizer removal process, which improves the working efficiency of the equipment.
[0020] The oil containing plasticizer in the unremoved tank 4 can be pumped back into the two removal tanks 9 (connecting pipes not shown) through a one-way pipe for plasticizer removal. Overall, this makes the entire removal process more time-saving and efficient.
[0021] Furthermore, a pair of mounting plates 7 are fixedly installed on the top of the oil storage tank 1. A cylinder 8 is fixedly connected to the end of each mounting plate 7. A lifting plate 17 is oscillatingly connected to the bottom of the cylinder 8. Multiple feed holes 21 are opened on the lifting plate 17. The edge of the lifting plate 17 abuts against the inner ring of the removal tank 9. A grate 20 is rotatably connected to the top of the lifting plate 17 near each feed hole 21. A storage cavity 22 is opened on the grate 20. A drain basket 12 is fixedly connected to the top of each removal tank 9. A retaining ring 16 is fixedly installed on the top of the inside of the removal tank 9. The retaining ring 16 is located inside the removal tank 9 away from the drain basket 12. Each grate 20 has an opening. The inlet and storage chamber 22 are connected; one end of each drain basket 12 is connected to a cleaning pipe 10 through a pipe, and a motor 11 is fixedly installed at one end of the cleaning pipe 10. The output shaft of the motor 11 extends into the cleaning pipe 10, and a spiral blade 13 is sleeved on the output shaft of the motor 11. Multiple agent pipes 14 are fixedly connected to one side of the cleaning pipe 10, and multiple drain pipes 15 are fixedly connected to the bottom of the cleaning pipe 10. The other side of the cleaning pipe 10 is fixedly connected to the removal tank 9 through a pipe; the height of the air flotation plate 19 from the ground is lower than the height of the second oil drain pipe 6 from the ground, and the height of the retaining ring 16 from the air flotation plate 19 is greater than the height of the first oil drain pipe 5 from the air flotation plate 19.
[0022] The cylinder 8 is then driven to descend, causing the lifting plate 17 to descend. When the lifting plate 17 descends to near the top of the air flotation plate 19, the superparamagnetic particles follow the oil through the feed hole 21. A small portion of the superparamagnetic particles then enter the grate 20 through the storage chamber 22. The cylinder 8 is then driven to rise again. When the cylinder 8 moves the lifting plate 17 past the height of the first row of oil pipes 5, and the edge of the lifting plate 17 contacts the retaining ring 16, the lifting plate 17 tilts at the bottom of the cylinder 8. The gravity at one end of the grate 20 is greater than in other areas (a counterweight can be installed during installation). Because the superparamagnetic particles are inside the grate 20, the grate 20 is positioned above the lifting plate 17. The device rotates, causing the lifting plate 17 to pour the superparamagnetic particles into the drain basket 12. The superparamagnetic particles then flow along the drain basket 12 into the cleaning pipe 10. Then, the motor 11 is turned on, causing the spiral blade 13 to rotate at a low speed. At the same time, the agent that reacts with the plasticizer is discharged into the cleaning pipe 10 through the agent pipe 14, causing the plasticizer to decompose on the surface of the superparamagnetic particles. After the plasticizer on the surface of the superparamagnetic particles is cleaned off, the liquid can be discharged by opening multiple drain pipes 15. Finally, clean water is injected from the agent pipe 14 to repeatedly rinse the inside of the cleaning pipe 10. Then, the multiple drain pipes 15 are sealed, so that the pump generates pressure to flush the superparamagnetic particles into each removal tank 9. Since oil and water coexist in this treatment device, the oil and water can be separated by constant volume during the process of discharge into the receiving tank 3, thereby improving the recycling rate of the device.
[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0024] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A plasticizer removal device, comprising an oil storage tank (1), characterized in that: The bottom of the oil storage tank (1) is connected to a pair of removal tanks (9) by a pipe. Each removal tank (9) is surrounded by an electromagnetic coil (2). A first oil drain pipe (5) is fixedly connected to the top of the two removal tanks (9). A receiving tank (3) is fixedly connected to one end of the first oil drain pipe (5). A second oil drain pipe (6) is fixedly connected to the bottom of the two removal tanks (9). An unremoved tank (4) is fixedly connected to one end of the second oil drain pipe (6). A conical hood (18) is fixedly installed at the bottom of each removal tank (9). An air flotation plate (19) is fixedly installed on the top of the conical hood (18). A bubble dispersion zone is formed between the air flotation plate (19) and the conical hood (18).
2. The plasticizer removal device according to claim 1, characterized in that: A pair of mounting plates (7) are fixedly installed on the top of the oil storage tank (1). A cylinder (8) is fixedly connected to the end of each mounting plate (7). A lifting plate (17) is swung to the bottom of the cylinder (8). Multiple feed holes (21) are opened on the lifting plate (17). The edge of the lifting plate (17) abuts against the inner ring of the removal tank (9).
3. The plasticizer removal device according to claim 2, characterized in that: The top of the lifting plate (17) is rotatably connected to a grate (20) near each feed hole (21). The grate (20) has a storage cavity (22). Each removal tank (9) is fixedly connected to a drain basket (12) on its outer top. A retaining ring (16) is fixedly installed on the top of the inside of the removal tank (9). The retaining ring (16) is located inside the removal tank (9) on the side away from the drain basket (12).
4. The plasticizer removal device according to claim 3, characterized in that: Each of the grates (20) has an opening that is connected to the storage cavity (22).
5. The plasticizer removal device according to claim 3, characterized in that: Each of the drain baskets (12) is connected to a cleaning pipe (10) at one end via a pipe. A motor (11) is fixedly installed at one end of the cleaning pipe (10). The output shaft of the motor (11) extends into the cleaning pipe (10). A spiral blade (13) is sleeved on the output shaft of the motor (11). Multiple medicine tubes (14) are fixedly connected to one side of the cleaning pipe (10). Multiple drain pipes (15) are fixedly connected to the bottom of the cleaning pipe (10). The other side of the cleaning pipe (10) is fixedly connected to the removal tank (9) via a pipe.
6. The plasticizer removal device according to claim 3, characterized in that: The height of the air flotation plate (19) above the ground is lower than the height of the second oil pipe (6) above the ground, and the height of the retaining ring (16) above the air flotation plate (19) is greater than the height of the first oil pipe (5) above the air flotation plate (19).