Industrial waste oil high-efficiency purification filtering equipment

Abstract

This application discloses a high-efficiency purification and filtration device for industrial waste oil, including a control device, a primary oil tank, a primary filter, a vacuum dehumidification device, a secondary oil tank, a high-efficiency filter, and a fine filter. The primary oil tank is connected to the oil inlet, the rear end of the primary oil tank is connected to the primary filter, the rear end of the primary filter is connected to the vacuum dehumidification device, the rear end of the vacuum dehumidification device is connected to the primary oil tank, the oil outlet of the primary oil tank is also connected to the high-efficiency filter, the oil outlet of the high-efficiency filter is connected to the secondary oil tank, the oil outlet of the secondary oil tank is connected to the fine filter, and the oil outlet of the fine filter is connected to an oil outlet. The control device is connected to each component. This application maintains a stable oil temperature during the purification and filtration process of waste oil, solving the problems of low purification and filtration efficiency and high cost of high-viscosity stretching oil.

Description

Technical Field

[0001] This utility model relates to the technical field of waste oil treatment equipment, and in particular to a high-efficiency purification and filtration equipment for industrial waste oil. Background Technology

[0002] The stretching oil used in the manufacturing process of automotive lithium battery casings contains highly efficient extreme pressure additives, such as sulfurized fatty acid esters and ammonium phosphate salts. This stretching oil maintains high kinematic viscosity even at high temperatures, effectively reducing friction between the aluminum casing and the mold, preventing scratches, breakage, and mold wear, and improving the surface finish of the aluminum casing. However, its viscosity is greatly affected by temperature; its fluidity increases (viscosity decreases) at high temperatures, while it is more viscous and has low fluidity at room temperature. Therefore, when performing secondary recycling and waste oil purification filtration of this type of stretching oil, problems such as high viscosity, slow flow, slow filtration speed, and difficulty in separating impurities exist. Conventional waste oil dewatering and slag removal processes are not only inefficient and costly, but also cannot guarantee that the performance after treatment still meets the production process requirements. Utility Model Content

[0003] To address the problems in related technologies, this application discloses an efficient purification and filtration device for industrial waste oil, which maintains a stable oil temperature during the purification and filtration process, thus solving the problems of low purification and filtration efficiency and high cost of high-viscosity stretching oil.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] An efficient purification and filtration device for industrial oily waste includes a control device, a primary oil tank, a primary filter, a vacuum dehumidification device, a secondary oil tank, a high-efficiency filter, and a fine filter. The primary oil tank is connected to an oil inlet. The rear end of the primary oil tank is connected to the primary filter. The rear end of the primary filter is connected to the vacuum dehumidification device. The rear end of the vacuum dehumidification device communicates with the primary oil tank. The oil outlet of the primary oil tank is also connected to the high-efficiency filter. The oil outlet of the high-efficiency filter is connected to the secondary oil tank. The oil outlet of the secondary oil tank is connected to the fine filter. The oil outlet of the fine filter is connected to an oil outlet. The control device is connected to each of the components.

[0006] By adopting the above technical solution, the sludge is introduced into the primary storage tank through the oil inlet. After being pumped out of the primary storage tank, the sludge enters the primary filtration device, where it is pre-filtered. Then, it enters the vacuum dehumidification device, where it is dehumidified before flowing back into the primary storage tank. This cycle is repeated until all the sludge in the primary storage tank is dehydrated. The dehydrated sludge then enters the high-efficiency filtration device, where solid impurities are filtered out through a filter cloth before flowing into the secondary storage tank. The oil in the secondary storage tank is pumped out again and enters the fine filtration device for decolorization. The decolorized oil then flows out through the oil outlet, completing the sludge purification and filtration process.

[0007] As a further aspect of this application, a primary heater is provided inside the primary oil storage tank. The primary heater is located at the bottom inside the primary oil storage tank. The primary heater heats the sludge oil in the primary oil storage tank, so that the sludge oil maintains good fluidity. A first stirring device is provided at the top of the primary oil storage tank. The first stirring device can stir the sludge oil inside the primary oil storage tank, so that the sludge oil is heated evenly and the oil temperature is kept stable.

[0008] As a further aspect of this application, the primary filtration device includes a multi-stage primary filter element. The primary filter element performs initial filtration of the sludge oil, removing water and slag simultaneously, and filtering out solid metal impurities mixed into the drawing oil during the production process.

[0009] As a further aspect of this application, the vacuum dehumidification device includes a vacuum dehumidification tank, which dehumidifies the sludge oil under vacuum. The vacuum dehumidification tank is connected to a condenser, which condenses and discharges high-temperature steam. This structure can quickly evaporate and condense the water in the sludge oil before discharging it.

[0010] As a further aspect of this application, a vacuum heater is connected to the front end of the vacuum dehumidification tank. The vacuum heater heats the sludge oil before it enters the vacuum dehumidification tank, ensuring that the stretching oil is at an ideal working oil temperature before vacuum dehumidification, which is beneficial for the flow of sludge oil and improves the dehumidification effect.

[0011] As a further embodiment of this application, the high-efficiency filtration device is a cloth-type oil filter, including a filter box with an inclined mesh filter plate inside. It also includes a negative pressure structure, a pressure plate, a feeding structure, and a winding structure. The air outlet of the negative pressure structure is located above the filter plate, and the air inlet is located below the filter plate. The filter cloth is drawn out from the feeding structure, passes through the filter box, and reaches the winding structure. The pressure plate presses the filter cloth onto the bottom of the filter plate, and the filter cloth lies flat on the filter plate. The inclined filter plate and negative pressure structure accelerate the rapid passage of sludge through the filter cloth, and the rolling conveyor method allows the filter cloth to move from bottom to top along the inclined filter plate, achieving automatic filter cloth replacement and removing solid impurities remaining on the filter cloth, thus completing high-efficiency filtration.

[0012] As a further aspect of this application, a secondary heater is provided inside the secondary oil storage tank. The secondary heater is located on the bottom side inside the secondary oil storage tank and can heat the oil inside the secondary oil storage tank. A second stirring device is provided on the top of the secondary oil storage tank. The second stirring device can stir the sludge oil inside the secondary oil storage tank, so that the oil temperature inside the tank can be quickly stabilized and the oil flowability can be guaranteed.

[0013] As a further embodiment of this application, the fine filtration device is a precision decolorization device. The fine filtration device performs fine filtration on the sludge oil to complete the decolorization treatment, thereby achieving complete removal of sludge oil. The oil outlet is connected to the oil storage point, and compliant oil products are output.

[0014] As a further embodiment of this application, the primary oil storage tank and the secondary oil storage tank share the same side wall and are symmetrically arranged on both sides of the side wall. The primary heater, secondary heater, first agitator, and second agitator are symmetrically arranged, making the primary oil storage tank and the secondary oil storage tank a symmetrical whole. This structure is beneficial for maintaining a small oil temperature difference between adjacent tanks by utilizing the heat conduction effect of the tank wall, thereby reducing heat loss from the primary oil storage tank and the secondary oil storage tank to the surrounding environment.

[0015] In summary, the beneficial effects of this application are as follows:

[0016] 1. The system employs a segmented heating method, with heating occurring in the primary oil tank, secondary oil tank, and vacuum dehumidifier. This ensures stable oil temperature during the sludge purification process, preventing fluctuations in oil temperature that could lead to unstable oil flow rate and thus affecting the purification effect. This improves purification efficiency and enhances the economic efficiency of equipment operation.

[0017] 2. Pre-filtration followed by vacuum dehumidification avoids solid impurities in the sludge from clogging the vacuum pipeline, improving the vacuum dehumidification efficiency. Furthermore, reheating before vacuum dehumidification ensures a stable oil temperature before entering the vacuum dehumidification process, preventing a decrease in dehumidification efficiency due to low oil temperature.

[0018] 3. The system employs a filter cloth roller conveyor, an inclined filtration system, and a negative pressure structure to achieve efficient and automated sludge removal from sludge and oil. Attached Figure Description

[0019] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 This is a three-dimensional structural diagram of this application.

[0022] Figure 2 This is a schematic diagram of the primary and secondary oil storage tanks in this application.

[0023] Figure 3This is a schematic diagram of the structure of the primary filtration device and the vacuum dehumidification device of this application.

[0024] Figure 4 This is a cross-sectional structural diagram of the high filtration device of this application.

[0025] Figure 5 This is a schematic diagram of the structural control of this application.

[0026] Figure label annotations:

[0027] 1. Control device; 2. Initial oil tank; 21. Initial heater; 22. First stirring device; 23. First temperature acquisition device; 24. First level gauge; 25. Oil inlet; 26. Initial oil outlet; 27. Initial oil return port; 3. Initial filter device; 31. Initial filter inlet; 4. Vacuum dehumidification device; 41. Vacuum dehumidification tank; 42. Condenser; 43. Vacuum heater; 44. Initial filter outlet; 5. High-pressure filter device; 51. Negative pressure filter. 52. Pressing structure; 53. Winding structure; 54. Filter plate; 55. Pressing plate; 56. Filter box; 57. Oil collection box; 58. Liquid level detector; 59. Distributor; 6. Secondary oil storage tank; 61. Secondary heater; 62. Secondary stirring device; 63. Secondary temperature acquisition device; 64. Secondary liquid level gauge; 65. Secondary oil inlet; 66. Secondary oil outlet; 67. Secondary oil outlet; 7. Fine filtration device; 8. Side tank wall. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects disclosed in this embodiment as detailed in the appended claims.

[0029] It should be noted that all directional indicators in the embodiments (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, the use of terms such as "first" and "second" in the embodiments is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. It is merely to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] To further understand the content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0032] like Figure 1 , Figure 5 As shown, an efficient purification and filtration device for industrial waste oil includes a control device 1, a primary oil storage tank 2, a primary filter device 3, a vacuum dehumidification device 4, a secondary oil storage tank 6, a high-efficiency filter device 5, and a fine filter device 7. The primary oil storage tank 2 is connected to the oil inlet. The rear end of the primary oil storage tank 2 is connected to the primary filter device 3. The rear end of the primary filter device 3 is connected to the vacuum dehumidification device 4. The rear end of the vacuum dehumidification device 4 is connected to the primary oil storage tank. The oil outlet of the primary oil storage tank 2 is also connected to the high-efficiency filter device 5. The oil outlet of the high-efficiency filter device 5 is connected to the secondary oil storage tank 6. The oil outlet of the secondary oil storage tank 6 is connected to the fine filter device 7. The oil outlet of the fine filter device 7 is connected to an oil outlet. The control device 1 is connected to each of the control components.

[0033] like Figure 1 , Figure 2 As shown, the sludge enters the primary oil storage tank 2 through the oil inlet 25. The primary oil storage tank 2 is equipped with a primary heater 21 located at the bottom of the tank. A first stirring device 22 is located at the top of the tank, stirring the sludge inside to rapidly and fully preheat it. The sludge then flows out through the primary oil outlet 26, is filtered by the primary filter 3, dehydrated by the vacuum dehumidification device 4, and then flows back into the primary oil storage tank 2 through the primary return oil outlet 27. This cycle of filtration continues until the sludge is completely dehydrated. The dehydrated oil then flows out through the primary oil outlet 26 to the high-efficiency filter 5.

[0034] like Figure 3As shown, the primary filtration device 3 includes a multi-stage primary filter element, and the vacuum dehumidification device 4 includes a vacuum dehumidification tank 41. The vacuum dehumidification tank 41 performs vacuum dehumidification on the sludge oil. The vacuum dehumidification tank 41 is connected to a condenser 42, and a vacuum heater 43 is connected to the front end of the vacuum dehumidification tank 41. After the sludge oil flows in from the primary filter inlet 31, the primary filter element performs primary filtration on the sludge oil. The filtered oil flows into the vacuum heater 43, which heats the sludge oil before it enters the vacuum dehumidification tank 41. The oil that has been dehydrated by vacuum in the vacuum dehumidification tank 41 flows back to the primary oil storage tank 2 through the primary filter outlet 44. The water in the sludge oil vaporizes and is condensed and discharged by the condenser 42, thus achieving dehydration of the sludge oil.

[0035] like Figure 4 As shown, the high-pressure filtration device 5 is a cloth-type oil filter, including a negative pressure structure 51, a feeding structure 52, a winding structure 53, a filter plate 54, a pressure plate 55, a filter box 56, an oil collection tank 57, a liquid level detector 58, and a distributor 59. The filter plate 54 is a mesh plate, which is obliquely placed in the filter box 56. The filter cloth is attached to the filter plate 54. The feeding structure 52 and the winding structure 53 together realize the feeding and winding of the filter cloth. During filtration, the filter cloth is drawn out from the feeding structure 52, passes through the pressure plate 55 to the bottom of the filter plate 54, and then passes through the filter box 56 from bottom to top along the filter plate 54 before reaching the winding structure 53. The sludge is sprayed onto the filter cloth after passing through the distributor 59, and after being filtered by the filter cloth, it flows into the oil collection tank 57 below. The oil in the oil collection tank 57 is pumped back to the secondary oil storage tank 6 through the second oil inlet 65. When the liquid level detector 58 detects a high liquid level, it automatically controls the filter cloth to move from the feeding structure 52 to the winding structure 53, realizing automatic replacement of the filter cloth. The air outlet of the negative pressure structure 51 is located above the filter plate 54, and the air inlet is located below the filter plate 54, forming a negative pressure above and below the filter cloth and filter plate, which accelerates the filtration speed of sludge and oil. The entire filtration process has a high degree of automation and good filtration effect.

[0036] like Figure 2 As shown, the secondary oil storage tank 6 is equipped with a secondary heater 61, which is located on the bottom side of the secondary oil storage tank 6. The top of the secondary oil storage tank 6 is equipped with a second stirring device 62, which can stir the sludge oil inside the secondary oil storage tank 6. The secondary oil storage tank 6 is also equipped with a second temperature acquisition device 63, a second level gauge 64, a second oil inlet 65 connected to the oil outlet at the rear end of the high-efficiency filter, a secondary oil outlet 66 connected to the oil inlet pipe of the high-efficiency filter 5, and a second oil outlet 67 connected to the oil inlet pipe of the fine filter.

[0037] The primary oil storage tank 2 and the secondary oil storage tank 6 share one side wall 8 and are symmetrically distributed on both sides of the side wall 8. The primary heater 21 and the secondary heater 61, the first stirring device 22 and the second stirring device 62 are symmetrically distributed on both sides of the side wall 8. This structure is conducive to maintaining stable oil temperature and reducing energy consumption when heating and keeping sludge oil warm.

[0038] like Figure 1 As shown, the fine filtration device 7 is a precision decolorization device that achieves decolorization treatment.

[0039] The implementation principle of the high-efficiency purification and filtration device for industrial waste oil in this application is as follows:

[0040] Step 1: Dehydration of sludge and oil:

[0041] The waste oil dehydration process device consists of a primary oil storage tank 2, a primary filter device 3, and a vacuum dehumidification device 4. The waste oil flows sequentially through the primary oil storage tank 2, the primary filter device 3, and the vacuum dehumidification device 4 and circulates. Through the control device 1, the primary heater 21 and the vacuum heater 43 are controlled to keep the waste oil dehydration circulation pipeline at a stable temperature. After 3 hours of circulation dehydration, the water content of the oil is ≤500PPM. The dehydrated oil is temporarily stored in the primary oil storage tank 2.

[0042] Step 2, Removal of sludge and oil:

[0043] Following step 1, the dehydrated oil is pumped into the high-pressure filtration device 5. The oil falls onto the inclined filter cloth via the distributor 59. The filtered oil flows into the collection box. The waste residue remaining on the filter cloth is automatically rolled out of the filter box 56 along with the filter cloth by the feeding structure 52 and the winding structure 53, automatically completing the slag removal. The oil after slag removal is pumped into the secondary oil storage tank 6.

[0044] Step 3: Decolorizing the sludge and oil:

[0045] In step 2, the oil in the secondary oil storage tank 6 is kept at a constant temperature by the secondary heater 61, and then finely filtered by the fine filter device 7. After the oil is decolorized, it flows out.

[0046] After undergoing the above three processes, the waste oil is purified and filtered into compliant oil that can be reused.

[0047] Finally, it should be noted that the above disclosure is merely a preferred embodiment of this application and is not intended to limit this application. Although this application 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 this application should be included within the protection scope of this application. The scope of this application is limited only by the appended claims.

Claims

1. A high-efficiency purification and filtration device for industrial waste oil, characterized in that: The system includes a control device (1), a primary oil tank (2), a primary filter (3), a vacuum dehumidification device (4), a secondary oil tank (6), a high-efficiency filter (5), and a fine filter (7). The primary oil tank (2) is connected to the oil inlet. The rear end of the primary oil tank (2) is connected to the primary filter (3). The rear end of the primary filter (3) is connected to the vacuum dehumidification device (4). The rear end of the vacuum dehumidification device (4) is connected to the primary oil tank (2). The oil outlet of the primary oil tank (2) is also connected to the high-efficiency filter (5). The oil outlet of the high-efficiency filter (5) is connected to the secondary oil tank (6). The oil outlet of the secondary oil tank (6) is connected to the fine filter (7). The oil outlet of the fine filter (7) is connected to an oil outlet. The control device (1) is connected to each control unit.

2. The industrial waste oil high-efficiency purification and filtration equipment according to claim 1, characterized in that: The initial oil storage tank (2) is equipped with an initial heater (21) located on the bottom side of the initial oil storage tank (2). The initial oil storage tank (2) is equipped with a first stirring device (22) on the top. The first stirring device (22) can stir the sludge oil inside the initial oil storage tank (2).

3. The industrial waste oil high-efficiency purification and filtration equipment according to claim 1, characterized in that: The primary filtration device (3) includes a multi-stage primary filtration filter element, which performs primary filtration of sludge and oil.

4. The industrial waste oil high-efficiency purification and filtration equipment according to claim 1, characterized in that: The vacuum dehumidification device (4) includes a vacuum dehumidification tank (41), which dehumidifies the sludge oil. The vacuum dehumidification tank (41) is connected to a condenser (42), which condenses and discharges high-temperature steam.

5. The industrial waste oil high-efficiency purification and filtration equipment according to claim 4, characterized in that: The vacuum dehumidification tank (41) is equipped with a vacuum heater (43) at the front end, which heats the sludge before it enters the vacuum dehumidification tank (41).

6. The industrial waste oil high-efficiency purification and filtration equipment according to claim 1, characterized in that: The high-filtration device (5) is a cloth oil filter, including a filter box (56), in which an inclined mesh filter plate (54) is provided. It also includes a negative pressure structure (51), a pressure plate (55), a feeding structure (52), and a winding structure (53). The air outlet of the negative pressure structure (51) is located above the filter plate (54), and the air inlet of the negative pressure structure (51) is located below the filter plate (54). The filter cloth is drawn out from the feeding structure (52), passes through the filter box (56), and then reaches the winding structure (53). The pressure plate (55) presses the filter cloth onto the bottom of the filter plate (54), and the filter cloth lies flat on the filter plate (54).

7. The industrial waste oil high-efficiency purification and filtration equipment according to claim 1, characterized in that: The secondary oil storage tank (6) is equipped with a secondary heater (61) located on the bottom side inside the secondary oil storage tank (6). The top of the secondary oil storage tank (6) is equipped with a second stirring device (62), which can stir the sludge oil inside the secondary oil storage tank (6).

8. The industrial waste oil high-efficiency purification and filtration equipment according to claim 1, characterized in that: The fine filtration device (7) includes a precision decolorization device.

9. The industrial waste oil high-efficiency purification and filtration equipment according to claim 1, characterized in that: The primary oil storage tank (2) and the secondary oil storage tank (6) share a side wall (8) and are symmetrically arranged on both sides of the side wall (8).

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