A device for regenerating waste lubricating oil by grading and removing impurities

Abstract

The application provides a waste lubricating oil grading impurity removal and regeneration treatment device, waste lubricating oil is introduced into a filter drum, the filter drum is driven to rotate by a rotary drive mechanism, and the waste lubricating oil is filtered and treated; when a coil in the hollow shaft body is supplied with high-frequency alternating current, a high-strength and rapidly changing alternating magnetic field in a direction is generated around the coil; the filter drum outside is a conductive closed loop, and eddy current is induced inside when the alternating magnetic field passes through the filter drum; when the eddy current passes through the filter drum with resistance, electric energy is directly converted into heat energy, the filter drum is heated by itself, the filter drum is directly heated by electromagnetic induction, waste oil is synchronously heated in the moment of penetrating the filter screen, viscosity is sharply reduced, the problem of rapid blockage caused by low-temperature high-viscosity oil liquid entering the filter in the traditional process is avoided, heat transfer efficiency is high, the filter drum rotates at a uniform speed around the coil, and the uniformity of heating is ensured.

Description

Technical Field

[0001] This invention relates to the field of waste lubricating oil regeneration, and in particular to a waste lubricating oil classification, impurity removal, and regeneration treatment device. Background Technology

[0002] Waste lubricating oil refers to the lubricating oil that is replaced during the use of various mechanical equipment due to high-temperature oxidation, mechanical shearing, impurity contamination, and additive consumption. Improper disposal not only causes serious environmental pollution but also represents a huge waste of petroleum resources. Recycling and reusing the base oil in waste lubricating oil is an important way to achieve resource recycling.

[0003] Waste lubricating oil contains a wide variety of impurities in complex forms, mainly including: solid particles such as metal shavings, carbon deposits, and dust; free water, emulsified water, and dissolved water; as well as gums, asphaltenes, and degraded additives produced by high-temperature oxidation. In the regeneration process, these impurities must be removed in stages to provide qualified feedstock for subsequent distillation or hydrorefining. If pretreatment is incomplete, solid particles will clog and wear down subsequent equipment; gums and asphaltenes are prone to coking on heated surfaces at high temperatures; and residual moisture will lead to a significant increase in distillation energy consumption and cause equipment corrosion.

[0004] In the pretreatment stage, precision filtration is a key process, its function being to further remove fine suspended particles and colloids remaining in the oil after coarse filtration and demulsification. However, waste lubricating oil has high viscosity and high colloid content, making conventional cartridge or bag filters prone to clogging by viscous sludge during use, resulting in frequent filter media replacements and high operating costs. To solve the clogging problem, it is usually necessary to heat the waste oil before filtration to reduce its viscosity. However, heating and filtration are performed in separate steps, which not only increases the number of devices and heat loss in pipelines, but also means that thermal hysteresis still exists when the low-temperature oil enters the high-temperature filter, resulting in a still high risk of clogging in the initial stage of filtration.

[0005] To address these issues, the industry has begun exploring technologies that integrate heating and filtration functions into a single device. One approach involves installing an induction heating coil on a rotary drum microfilter, using electromagnetic induction to heat the metal filter screen. This heats the waste oil, reducing its viscosity and improving filtration efficiency while filtering, thus reducing clogging. However, current designs typically rotate the induction coil along with the drum, requiring a conductive slip ring to supply power to the rotating components. This structure has significant engineering drawbacks: the slip ring and brush operate in an oily / gas-laden environment, making them prone to wear, poor contact, and sparks, resulting in poor reliability and high maintenance requirements. Summary of the Invention

[0006] (a) Technical problems to be solved To address the aforementioned problems in the prior art, the present invention provides a waste lubricating oil grading, impurity removal, and regeneration treatment device.

[0007] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by the present invention include: A waste lubricating oil grading, impurity removal, and regeneration treatment device includes an impurity removal filter box, a heating magnetic core, a filter drum, and a rotary drive mechanism. The impurity removal filter box is equipped with a partition, which divides the interior of the impurity removal filter box into a filter chamber and a feed chamber, and the partition is provided with a feed window; The filter drum has a hollow cylindrical structure, and one end of the filter drum is open, covering the feed window. The cylinder wall of the filter drum is evenly distributed with a number of filter holes. The rotary drive mechanism is connected to the filter drum and is used to drive the filter drum to rotate; The heating magnetic core is fixedly installed on one side wall of the impurity removal filter box, extends through the feed window into the filter drum, and is coaxially arranged with the filter drum. The heating magnetic core includes a hollow shaft body and a coil. The hollow shaft body has an axially extending sealed cavity inside, and both ends of the hollow shaft body are closed. The coil is wound around the inner wall of the hollow shaft body, and the coil generates an alternating magnetic field when energized.

[0008] Preferably, the hollow shaft body has a lead hole, through which the coil lead extends to the outside and is connected to an external power source.

[0009] Preferably, the hollow shaft body is made of a non-magnetic material.

[0010] Preferably, the rotary drive mechanism includes a servo motor and a reducer, the servo motor is connected to the reducer, and the drive shaft of the reducer is connected to the filter drum.

[0011] Preferably, it also includes a cleaning mechanism, which includes a water distribution pipe, nozzles and a collection box. The water distribution pipe is located directly above the filter drum, and a plurality of nozzles are provided at the bottom of the water distribution pipe. The collection box is located inside the filter drum and directly below the water distribution pipe.

[0012] Preferably, the bottom of both the filter chamber and the feed chamber is provided with a connecting pipe that communicates with the outside.

[0013] (III) Beneficial Effects The beneficial effects of this invention are as follows: Using the above technical solution, waste lubricating oil is introduced into the filter drum, and the filter drum is driven to rotate by a rotary drive mechanism to achieve filtration of the waste lubricating oil. When high-frequency alternating current is applied to the coil inside the hollow shaft body, a rapidly changing alternating magnetic field with high direction and intensity is generated around the coil. The external filter drum is a conductive closed loop; when the alternating magnetic field passes through it, eddy currents are induced inside. When these eddy currents flow through the resistive filter drum, electrical energy is directly converted into heat energy, causing the filter drum itself to heat up. This directly heats the filter drum through electromagnetic induction, allowing the waste oil to be simultaneously heated the instant it penetrates the filter screen, resulting in a sharp decrease in viscosity. This avoids the rapid clogging problem caused by low-temperature, high-viscosity oil entering the filter in traditional processes. Furthermore, the heat transfer efficiency is high, and the uniform rotation of the filter drum around the coil ensures the uniformity of heating. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a waste lubricating oil classification, impurity removal, and regeneration treatment device. Figure 2 This is a schematic diagram of the internal structure of a waste lubricating oil grading, impurity removal, and regeneration treatment device. Figure 3 This is a schematic diagram of the internal structure of the heating magnetic core.

[0015] [Explanation of Labels in the Attached Image] 1. Impurity removal filter box; 2. Partition; 3. Filter roller; 4. Cleaning up the organization; 41. Water distribution pipe; 42. Nozzle; 43. Collection box; 5. Rotary drive mechanism; 51. Servo motor; 52. Gear reducer; 6. Heating magnetic core; 61. Hollow shaft body; 62. Coil. Detailed Implementation

[0016] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Please refer to Figures 1 to 3 The present invention provides a waste lubricating oil grading, impurity removal and regeneration treatment device, including an impurity removal filter box 1, a heating magnetic core 6, a filter drum 3 and a rotary drive mechanism 5; The impurity removal filter box 1 is equipped with a partition 2, which divides the interior of the impurity removal filter box 1 into a filter chamber and a feeding chamber, and a feeding window is provided on the partition 2. The filter drum 3 has a hollow cylindrical structure, and one end of the filter drum 3 is open, covering the feed window. The cylinder wall of the filter drum 3 is evenly distributed with several filter holes. The rotary drive mechanism 5 is connected to the filter drum 3 and is used to drive the filter drum 3 to rotate. The heating magnetic core 6 is fixedly installed on one side wall of the impurity removal filter box 1 and extends through the feed window into the filter drum 3, and is coaxially arranged with the filter drum 3. The heating magnetic core 6 includes a hollow shaft body 61 and a coil 62. The hollow shaft body 61 has a closed cavity extending along the axial direction inside, and both ends of the hollow shaft body 61 are closed. The coil 62 is wound on the inner wall surface of the hollow shaft body 61, and the coil 62 generates an alternating magnetic field after being energized. In use, waste lubricating oil is fed into the filter drum 3, and the filter drum 3 is driven to rotate by the rotary drive mechanism 5 to filter the waste lubricating oil. When high-frequency alternating current is applied to the coil 62 inside the hollow shaft body 61, an alternating magnetic field with a rapidly changing direction and intensity is generated around the coil 62. The external filter drum 3 is a conductive closed loop. When the alternating magnetic field passes through it, eddy currents are induced inside. When these eddy currents flow through the filter drum 3 which has resistance, electrical energy is directly converted into heat energy, causing the filter drum 3 to heat up. The filter drum 3 is directly heated through electromagnetic induction, so that the waste oil is heated synchronously the moment it penetrates the filter screen, and the viscosity drops sharply. This avoids the problem of rapid clogging caused by low temperature and high viscosity oil entering the filter in traditional processes, and the heat transfer efficiency is high. The filter drum 3 rotates around the coil 62 at a uniform speed, ensuring the uniformity of heating.

[0018] In this embodiment, a lead wire hole is provided on the hollow shaft body 61, and the lead wire of the coil 62 extends to the outside through the lead wire hole and is connected to an external power source.

[0019] In this embodiment, the hollow shaft body 61 is made of a non-magnetic material.

[0020] In this embodiment, the rotary drive mechanism 5 includes a servo motor 51 and a reducer 52. The servo motor 51 is connected to the reducer 52, and the drive shaft of the reducer 52 is connected to the filter roller 3. In use, the servo motor 51 drives the filter roller 3 to rotate through the reducer 52 to achieve rotary filtration.

[0021] In this embodiment, a cleaning mechanism 4 is also included. The cleaning mechanism 4 includes a water distribution pipe 41, nozzles 42, and a collection box 43. The water distribution pipe 41 is located directly above the filter drum 3, and multiple nozzles 42 are provided at the bottom of the water distribution pipe 41. The collection box 43 is located inside the filter drum 3 and directly below the water distribution pipe 41. During use, the impurities in the waste lubricating oil adhere to the inside of the filter drum 3 under the action of centrifugal force. The water distribution pipe 41 is connected to a water pump and a water tank in sequence through pipelines. The impurities adhering to the inner wall of the filter drum 3 are washed into the collection box 43 by water supply, thereby achieving the filtration and collection of impurities.

[0022] In this embodiment, both the bottom of the filter chamber and the feed chamber are provided with connecting pipes that communicate with the outside.

[0023] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The scope of protection of this invention does not involve any improvement to the software and methods.

[0024] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waste lubricating oil grading, impurity removal, and regeneration treatment device, characterized in that, It includes a filter box for removing impurities, a heating magnetic core, a filter drum, and a rotary drive mechanism; The impurity removal filter box is equipped with a partition, which divides the interior of the impurity removal filter box into a filter chamber and a feed chamber, and the partition is provided with a feed window; The filter drum has a hollow cylindrical structure, and one end of the filter drum is open, covering the feed window. The cylinder wall of the filter drum is evenly distributed with a number of filter holes. The rotary drive mechanism is connected to the filter drum and is used to drive the filter drum to rotate; The heating magnetic core is fixedly installed on one side wall of the impurity removal filter box, extends through the feed window into the filter drum, and is coaxially arranged with the filter drum. The heating magnetic core includes a hollow shaft body and a coil. The hollow shaft body has an axially extending sealed cavity inside, and both ends of the hollow shaft body are closed. The coil is wound around the inner wall of the hollow shaft body, and the coil generates an alternating magnetic field when energized.

2. The waste lubricating oil classification, impurity removal, and regeneration treatment device according to claim 1, characterized in that, The hollow shaft body has a lead hole, through which the coil lead extends to the outside and is connected to an external power source.

3. The waste lubricating oil classification, impurity removal, and regeneration treatment device according to claim 1, characterized in that, The hollow shaft body is made of non-magnetic material.

4. The waste lubricating oil classification, impurity removal, and regeneration treatment device according to claim 1, characterized in that, The rotary drive mechanism includes a servo motor and a reducer. The servo motor is connected to the reducer, and the drive shaft of the reducer is connected to the filter drum.

5. The waste lubricating oil classification, impurity removal, and regeneration treatment device according to claim 1, characterized in that, It also includes a cleaning mechanism, which includes a water distribution pipe, nozzles and a collection box. The water distribution pipe is located directly above the filter drum, and multiple nozzles are located at the bottom of the water distribution pipe. The collection box is located inside the filter drum and directly below the water distribution pipe.

6. The waste lubricating oil classification, impurity removal, and regeneration treatment device according to claim 1, characterized in that, Both the bottom of the filter chamber and the feed chamber are equipped with connecting pipes that communicate with the outside.

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