Impurity filtering device for industrial waste oil

By designing a slidable filter mounting plate and push plate filter filter device, the problem of filtration efficiency reduction caused by solid impurities accumulation is solved, efficient cleaning and oil-water separation is achieved, and production efficiency and waste oil purity are improved.

CN223144267UActive Publication Date: 2025-07-25ZHEJIANG HUAXING GLASS CO LTD
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Patent Information

Application Number
CN202422370306.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-07-25
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

The existing industrial waste oil filtration device increases the resistance of the filter mesh due to the accumulation of solid impurities, reduces the filtration efficiency, and the cleaning process is time-consuming and requires shutdown, which increases maintenance costs and affects production efficiency.

Method used

A filter device including a movable cavity, a collection seat and a slidable filter mounting plate is designed to clean solid impurities through the push plate, and oil-water separation is achieved in combination with the sedimentation tank, simplifying the cleaning process.

Benefits of technology

It improves the cleaning efficiency of the filter cavity, reduces downtime, reduces maintenance costs, and improves production efficiency and purity of waste oil.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an impurity filtering device for industrial waste oil, which relates to the field of industrial waste oil treatment, and is technically characterized by comprising a filtering tank, a movable cavity is formed in the filtering tank, a collecting seat is slidably connected in the movable cavity, a mounting cavity is formed in the collecting seat, and the mounting cavity is connected with the collecting seat in a sliding manner. A filter mounting plate is slidably connected into the mounting cavity, and a filter screen is arranged in the filter mounting plate, so that the problems that a large amount of solid impurities can be quickly accumulated in the filter tank when the filter screen intercepts the impurities due to more solid impurities in the waste oil, the resistance of the filter screen is increased, and the waste oil is polluted are solved. The technical problem that the maintenance cost is increased and the production efficiency is influenced due to the fact that the filter tank is not detachable and the cleaning process of the filter tank is time-consuming and possibly needs to be stopped is solved.
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Description

Technical Field

[0001] The utility model relates to the field of industrial waste oil treatment, and particularly relates to an impurity filtering device for industrial waste oil. Background Art

[0002] With the increase in the number of industries, the output of waste oil has also increased accordingly. The disposal of waste oil is an issue that cannot be ignored. Reusing waste oil is an important measure to save resources. Currently, the treatment process for waste oil mainly includes solid impurity filtration and water-oil separation steps. Among them, solid impurity filtration refers to using a filtering device to remove solid impurities in industrial waste oil, and water-oil separation refers to allowing waste oil containing water to stand for a period of time so that the water in the oil-water mixture gradually precipitates to the bottom, and then using an oil-water separator to separate the precipitated waste oil from the water to extract waste oil with higher purity for recycling.

[0003] In the prior art, the filtering device usually consists of a filtering tank and a filter screen. However, due to the large amount of solid impurities in the waste oil, when the filter screen intercepts these impurities, a large amount of solid impurities will quickly accumulate in the filtering tank. The large amount of solid impurities will increase the resistance of the filter screen, resulting in a decrease in the filtering efficiency. However, since the filtering tank is not detachable, the cleaning process of the filtering tank is not only time-consuming but also may require the machine to stop, which will increase the maintenance cost and affect the production efficiency. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides an impurity filtering device for industrial waste oil, aiming to solve the technical problems that due to the large amount of solid impurities in the waste oil, when the filter screen intercepts these impurities, a large amount of solid impurities will quickly accumulate in the filtering tank, the large amount of solid impurities will increase the resistance of the filter screen, resulting in a decrease in the filtering efficiency, and since the filtering tank is not detachable, the cleaning process of the filtering tank is not only time-consuming but also may require the machine to stop, which will increase the maintenance cost and affect the production efficiency.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] An impurity filtering device for industrial waste oil includes a filtering tank. An activity cavity is opened inside the filtering tank. A collecting seat is slidably connected inside the activity cavity. An installation cavity is opened inside the collecting seat. A filtering installation plate is slidably connected inside the installation cavity. A filter screen is arranged inside the filtering installation plate. The filtering installation plate divides the installation cavity into a purification cavity and a filtering cavity. The filtering cavity communicates with the purification cavity. A pushing plate is horizontally arranged at the bottom of the filtering installation plate. The pushing plate is located at the bottom of the filtering cavity. An oil outlet pipe is arranged on one side of the filtering tank. One end of the oil outlet pipe faces the filtering cavity.

[0007] When the waste oil flows into the filtration tank and then enters the filtration cavity, the waste oil passes through the filter screen on the filter mounting plate, and the solid impurities are intercepted on the filter screen. The filtration cavity accommodates the solid impurities during the filtration process, while the filtered oil enters the purification cavity through the filter screen. As the filtration progresses, the solid impurities accumulate at the bottom of the filtration cavity. When cleaning is required, the collection seat is taken out from the installation cavity, and then the filter mounting plate is pushed upward. During the process of pushing out the filter mounting plate, the pushing plate will be driven to move, so that the pushing plate pushes out the solid impurities in the filtration cavity, thereby simplifying the cleaning method of the filtration cavity and improving the cleaning efficiency of the filtration cavity.

[0008] Further, in the present application, it further includes a sedimentation tank. The sedimentation tank is arranged on the other side of the filtration tank. A sedimentation cavity is opened inside the sedimentation tank. A first flow channel is opened on the other side of the filtration tank, and the first flow channel communicates with the sedimentation cavity. A second flow channel is opened on one side of the collection seat, and the second flow channel communicates with the first flow channel and the purification cavity.

[0009] After the waste oil removes most of the solid impurities through the filter screen and flows into the purification cavity, at this time, although the waste oil is already relatively clean, it still contains moisture. Therefore, the waste oil in the purification cavity flows into the first flow channel through the second flow channel, and then flows into the sedimentation cavity of the sedimentation tank. After the waste oil and water are left standing for a period of time, the waste oil floats on the water surface because of its smaller density, while the water sinks to the bottom of the sedimentation cavity, thereby achieving effective separation to facilitate improving the purity of the waste oil.

[0010] Further, in the present application, guide chutes are opened on both sides inside the installation cavity, and guide sliders are arranged on both sides of the filter mounting plate. The guide sliders on both sides of the filter mounting plate are respectively in sliding fit with the guide chutes on both sides of the installation cavity.

[0011] The guide sliders on both sides of the filter mounting plate and the guide chutes on both sides of the installation cavity form a sliding fit relationship. This design ensures the linear movement of the filter mounting plate during movement, prevents the filter mounting plate from swinging or shifting laterally, and improves the stability of the pushing plate in pushing the solid impurities.

[0012] Further, in the present application, a detachable cleaning seat is arranged on the top of the collection seat. A cleaning brush is arranged on one side of the cleaning seat. The cleaning seat is located above the filtration cavity, and the cleaning brush faces the filter screen.

[0013] Further, in the present application, a first fixing hole is opened on the top of the collection seat, a second fixing hole is opened inside the cleaning seat, and a fixing bolt is inserted into the second fixing hole. The fixing bolt is in threaded fit with the first fixing hole.

[0014] Furthermore, in the present application, a support base is provided on one side of the filter tank. An activity slot is formed at the top of the support base. An activity seat is slidably connected inside the activity slot. A fuel pump is provided on the top of the activity seat. The oil outlet pipe is connected to the oil outlet end of the fuel pump, and an oil suction pipe is provided at the oil inlet end of the fuel pump.

[0015] Furthermore, in the present application, a first adjustment hole is formed inside the activity seat. A plurality of second adjustment holes are formed on one side of the support base. The plurality of second adjustment holes communicate with the activity slot. An adjustment bolt passes through any one of the second adjustment holes, and the adjustment bolt is in threaded cooperation with the first adjustment hole.

[0016] Furthermore, in the present application, a support plate is provided on one side of the filter tank. An oil blocking elastic plate is provided on the top of the support plate. The oil blocking elastic plate is elastic and abuts against one end of the oil outlet pipe.

[0017] Furthermore, in the present application, a first separation pipe and a second separation pipe are provided on one side of the sedimentation tank. The first separation pipe is located below the second separation pipe, and the first separation pipe and the second separation pipe communicate with the sedimentation cavity.

[0018] Furthermore, in the present application, a setting cavity is formed inside the filter mounting plate. The setting cavity matches the shape of the filter net, and the filter net is installed inside the setting cavity.

[0019] The present utility model has the following beneficial effects:

[0020] When waste oil flows into the filter tank and then enters the filtering cavity, the waste oil passes through the filter net on the filter mounting plate, and solid impurities are intercepted on the filter net. The filtering cavity accommodates the solid impurities during the filtering process, while the filtered oil enters the purification cavity through the filter net. As the filtering progresses, the solid impurities accumulate at the bottom of the filtering cavity. When cleaning is required, the collection seat is taken out of the installation cavity, and then the filter mounting plate is pushed upward. During the pushing process of the filter mounting plate, the pushing plate will be driven to move, so that the pushing plate pushes out the solid impurities in the filtering cavity, thereby simplifying the cleaning method of the filtering cavity and improving the cleaning efficiency of the filtering cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model.

[0022] Figure 2 is a schematic structural diagram of the activity cavity of the present utility model.

[0023] Figure 3 is a schematic structural diagram of the fuel pump of the present utility model.

[0024] Figure 4 It is a schematic structural diagram of the collection seat of the present utility model.

[0025] Figure 5 It is a schematic structural diagram of the pushing plate of the present utility model.

[0026] Figure 6 It is a schematic structural diagram of the second flow channel and the third flow channel of the present utility model.

[0027] Figure 7 It is a schematic structural diagram of the cleaning brush of the present utility model.

[0028] Among them, reference numerals:

[0029] 1, sedimentation tank; 2, filtration tank; 3, sedimentation cavity; 4, first flow channel; 5, movable cavity; 7, installation cavity; 8, filtration cavity; 9, purification cavity; 10, second flow channel; 11, filtration installation plate; 12, set cavity; 13, filter screen; 14, pushing plate; 15, guiding slider; 16, guiding chute; 18, third flow channel; 19, first separation pipe; 20, cleaning seat; 21, cleaning brush; 22, first fixing hole; 23, second fixing hole; 24, fixing bolt; 25, oil pumping pump; 26, oil pumping pipe; 27, oil outlet pipe; 28, second separation pipe; 29, movable seat; 30, first adjustment hole; 31, second adjustment hole; 32, adjustment bolt; 33, support plate; 34, oil blocking elastic plate; 35, collection seat; 36, support seat; 38, movable groove. Specific embodiments

[0030] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Referring to Figures 1-6 , in some specific embodiments, an impurity filtering device for industrial waste oil includes a filtering tank 2. An activity cavity 5 is opened inside the filtering tank 2. A collecting seat 35 is slidably connected inside the activity cavity 5. An installation cavity 7 is opened inside the collecting seat 35. A filtering installation plate 11 is slidably connected inside the installation cavity 7. A filter screen 13 is provided inside the filtering installation plate 11. The filtering installation plate 11 divides the installation cavity 7 into a purification cavity 9 and a filtering cavity 8. The filtering cavity 8 communicates with the purification cavity 9. A pushing plate 14 is horizontally provided at the bottom of the filtering installation plate 11. The pushing plate 14 is located at the bottom of the filtering cavity 8. An oil outlet pipe 27 is provided on one side of the filtering tank 2. One end of the oil outlet pipe 27 faces the filtering cavity 8.

[0034] Through the above technical solution, when the waste oil flows into the filtration tank 2 and then enters the filtration cavity 8, the waste oil passes through the filter screen 13 on the filtration mounting plate 11, and the solid impurities are intercepted on the filter screen 13. The filtration cavity 8 accommodates the solid impurities during the filtration process, while the filtered oil passes through the filter screen 13 and enters the purification cavity 9. As the filtration progresses, the solid impurities accumulate at the bottom of the filtration cavity 8. When cleaning is required, the collection seat 35 is taken out from the installation cavity 7, and then the filtration mounting plate 11 is pushed upward. During the pushing process of the filtration mounting plate 11, the pushing plate 14 will be driven to move, so that the pushing plate 14 pushes out the solid impurities in the filtration cavity 8, thereby simplifying the cleaning method of the filtration cavity 8 and improving the cleaning efficiency of the filtration cavity 8.

[0035] Referring to Figures 1-2 , in some specific embodiments, it further includes a sedimentation tank 1. The sedimentation tank 1 is arranged on the other side of the filtration tank 2. A sedimentation cavity 3 is opened inside the sedimentation tank 1. A first flow channel 4 is opened on the other side of the filtration tank 2, and the first flow channel 4 communicates with the sedimentation cavity 3. A second flow channel 10 is opened on one side of the collection seat 35, and the second flow channel 10 communicates with the first flow channel 4 and the purification cavity 9.

[0036] Through the above technical solution, after the waste oil removes most of the solid impurities through the filter screen 13, it flows into the purification cavity 9. At this time, although the waste oil is already relatively clean, it still contains moisture. Therefore, the waste oil in the purification cavity 9 flows into the first flow channel 4 through the second flow channel 10, and then flows into the sedimentation cavity 3 of the sedimentation tank 1. After the waste oil and water are left standing for a period of time, the waste oil floats on the water surface due to its lower density, while the water sinks to the bottom of the sedimentation cavity 3, thereby achieving effective separation to facilitate improving the purity of the waste oil.

[0037] In addition, a third flow channel 18 can be provided at the bottom of the collection seat 35, and the third flow channel 18 communicates with the purification cavity 9, so that after the collection seat 35 is taken out, the waste oil can be quickly discharged from the purification cavity 9 and the filtration cavity 8.

[0038] Referring to Figures 5-6 , in some specific embodiments, guiding sliding grooves 16 are opened on both sides inside the installation cavity 7, guiding sliding blocks 15 are provided on both sides of the filtration mounting plate 11, and the guiding sliding blocks 15 on both sides of the filtration mounting plate 11 are respectively in sliding fit with the guiding sliding grooves 16 on both sides of the installation cavity 7.

[0039] Through the above technical solution, the guiding sliding blocks 15 on both sides of the filtration mounting plate 11 and the guiding sliding grooves 16 on both sides of the installation cavity 7 form a sliding fit relationship. This design ensures the linear movement of the filtration mounting plate 11 during movement, prevents the filtration mounting plate 11 from swinging or shifting laterally, and improves the stability of the pushing plate 14 in pushing the solid impurities.

[0040] Referring to Figures 1-4, in some specific embodiments, a detachable cleaning base 20 is provided at the top of the collection base 35. A cleaning brush 21 is provided on one side of the cleaning base 20. The cleaning base 20 is located above the filtering cavity 8, so that the cleaning brush 21 faces the filter screen 13.

[0041] Through the above technical solution, the cleaning brush 21 is located on one side of the cleaning base 20, and the cleaning base 20 is installed on the top of the collection base 35, just above the filter screen 13. Such a design ensures that when the filtering mounting plate 11 slides upward, the hard bristles of the cleaning brush 21 will pass through the mesh holes of the filter screen 13 to brush off the solid impurities attached to the filter screen 13, so that the brushed-off solid impurities fall onto the pushing plate 14 and are pushed out together.

[0042] Refer to Figure 7 , in some specific embodiments, a first fixing hole 22 is formed at the top of the collection base 35, a second fixing hole 23 is formed inside the cleaning base 20, a fixing bolt 24 is inserted into the second fixing hole 23, and the fixing bolt 24 is in threaded cooperation with the first fixing hole 22.

[0043] Through the above technical solution, a large amount of solid impurities will accumulate on the cleaning brush 21 during use, and these solid impurities will affect the cleaning effect of the cleaning brush 21. In order to maintain the efficiency of the cleaning brush 21 and extend its service life, it is necessary to regularly disassemble the cleaning base 20 for cleaning or replace the cleaning brush 21. Therefore, after the fixing bolt 24 passes through the second fixing hole 23, it is tightly fitted with the first fixing hole 22 on the collection base 35 through threads to form a detachable connection, so as to facilitate the cleaning of the cleaning brush 21.

[0044] Refer to Figures 1-7 , in some specific embodiments, a support base 36 is provided on one side of the filter tank 2. An activity groove 38 is formed at the top of the support base 36. An activity seat 29 is slidably connected inside the activity groove 38. A fuel pump 25 is provided at the top of the activity seat 29. An oil outlet pipe 27 is connected to the oil outlet end of the fuel pump 25, and an oil suction pipe 26 is provided at the oil inlet end of the fuel pump 25.

[0045] Through the above technical solution, when it is necessary to extract the oil liquid, the operator starts the fuel pump 25. The fuel pump 25 sucks the oil liquid from the external waste oil tank through the oil suction pipe 26, so that the oil liquid is discharged through the oil outlet pipe 27 to the filtering cavity 8 for filtering, thus facilitating the flexible treatment of the waste oil.

[0046] In addition, when the collection base 35 slides out of the activity cavity 5, the activity seat 29 can slide along the activity groove 38, so that the oil suction pipe 26 is separated from facing the filtering cavity 8, thereby preventing the oil suction pipe 26 from interfering with the sliding out of the collection base 35.

[0047] Refer to Figure 3, in some specific embodiments, a first adjustment hole 30 is formed inside the movable seat 29, and a plurality of second adjustment holes 31 are formed on one side of the support seat 36. The plurality of second adjustment holes 31 communicate with the movable slot 38. Any one of the second adjustment holes 31 is penetrated by an adjustment bolt 32, and the adjustment bolt 32 is in threaded cooperation with the first adjustment hole 30.

[0048] Through the above technical solution, when the movable seat 29 slides along the movable slot 38, any one of the second adjustment holes 31 corresponds to the first adjustment hole 30. By threading the adjustment bolt 32 with the first adjustment hole 30, it is convenient to fix the position of the movable seat 29.

[0049] Refer to Figure 3 , in some specific embodiments, a support plate 33 is provided on one side of the filter tank 2, and an oil-blocking elastic plate 34 is provided on the top of the support plate 33. The oil-blocking elastic plate 34 has elasticity, and the oil-blocking elastic plate 34 abuts against one end of the oil outlet pipe 27.

[0050] Through the above technical solution, when the collection seat 35 slides out of the movable cavity 5, the function of the filter net 13 will be lost at this time. The oil pump 25 is stopped, and the movable seat 29 is slid, so that the oil-blocking elastic plate 34 can temporarily block the oil outlet pipe 27 to prevent the remaining oil in the oil outlet pipe 27 from dripping into the movable cavity 5.

[0051] Refer to Figures 1-2 , in some specific embodiments, a first separation pipe 19 and a second separation pipe 28 are provided on one side of the sedimentation tank 1. The first separation pipe 19 is located below the second separation pipe 28, and the first separation pipe 19 and the second separation pipe 28 communicate with the sedimentation cavity 3.

[0052] Through the above technical solution, the oil-water mixture in the sedimentation tank 1 is left standing in the sedimentation cavity 3 for a period of time. The waste oil and water will naturally separate due to the density difference. When the oil-water mixture is left standing, the waste oil will float on the water surface. The second separation pipe 28 above the first separation pipe 19 will first collect the oil floating on the water surface, and the first separation pipe 19 will collect the water in the oil-water mixture, thus facilitating the separation of oil and water.

[0053] In addition, in order to achieve the best sedimentation time for the waste oil, control valves can be provided on the first separation pipe 19 and the second separation pipe 28 to facilitate controlling the opening and closing of the first separation pipe 19 and the second separation pipe 28.

[0054] Refer to Figure 5 , in some specific embodiments, a setting cavity 12 is formed inside the filter mounting plate 11. The shape of the setting cavity 12 matches the shape of the filter net 13, and the filter net 13 is installed inside the setting cavity 12.

[0055] Note that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

Claims

1. An impurity filtering device for industrial waste oil, including a filtering tank, wherein an active cavity is provided inside the filtering tank, and it is characterized in that, A collection seat is slidably connected inside the active cavity. An installation cavity is formed inside the collection seat. A filter installation plate is slidably connected inside the installation cavity. A filter screen is provided inside the filter installation plate. The filter installation plate divides the installation cavity into a purification cavity and a filtration cavity. The filtration cavity communicates with the purification cavity. A pushing plate is horizontally provided at the bottom of the filter installation plate. The pushing plate is located at the bottom of the filtration cavity. An oil outlet pipe is provided on one side of the filter tank. One end of the oil outlet pipe faces the filtration cavity.

2. The impurity filtering device for industrial waste oil according to claim 1, wherein, It further includes a sedimentation tank. The sedimentation tank is provided on the other side of the filter tank. A sedimentation cavity is formed inside the sedimentation tank. A first flow channel is formed on the other side of the filter tank. The first flow channel communicates with the sedimentation cavity. A second flow channel is formed on one side of the collection seat. The second flow channel communicates with the first flow channel and the purification cavity.

3. An impurity filtering device for industrial waste oil according to claim 1, characterized in that, Guide chutes are formed on both sides inside the installation cavity. Guide sliders are provided on both sides of the filter installation plate. The guide sliders on both sides of the filter installation plate are respectively in sliding cooperation with the guide chutes on both sides of the installation cavity.

4. An impurity filtering device for industrial waste oil according to claim 1, characterized in that, A detachable cleaning seat is provided on the top of the collection seat. A cleaning brush is provided on one side of the cleaning seat. The cleaning seat is located above the filtration cavity, so that the cleaning brush faces the filter screen.

5. An impurity filtering device for industrial waste oil according to claim 4, characterized in that, A first fixing hole is formed on the top of the collection seat. A second fixing hole is formed inside the cleaning seat. A fixing bolt is inserted into the second fixing hole. The fixing bolt is in threaded cooperation with the first fixing hole.

6. The impurity filtering device for industrial waste oil according to claim 1, characterized in that, A support seat is provided on one side of the filter tank. An activity slot is formed on the top of the support seat. An activity seat is slidably connected inside the activity slot. An oil extraction pump is provided on the top of the activity seat. The oil outlet pipe is connected to the oil outlet end of the oil extraction pump. An oil extraction pipe is provided at the oil inlet end of the oil extraction pump.

7. An impurity filtering device for industrial waste oil according to claim 6, characterized in that, A first adjustment hole is formed inside the activity seat. A plurality of second adjustment holes are formed on one side of the support seat. The plurality of second adjustment holes communicate with the activity slot. An adjustment bolt is inserted into any one of the second adjustment holes. The adjustment bolt is in threaded cooperation with the first adjustment hole.

8. An impurity filtration device for industrial waste oil according to claim 6, characterized in that, A support plate is provided on one side of the filter tank. A blocking oil elastic plate is provided on the top of the support plate. The blocking oil elastic plate has elasticity. The blocking oil elastic plate abuts against one end of the oil outlet pipe.

9. The impurity filtering device for industrial waste oil according to claim 2, characterized in that, A first separation pipe and a second separation pipe are provided on one side of the sedimentation tank. The first separation pipe is located below the second separation pipe. The first separation pipe and the second separation pipe communicate with the sedimentation cavity.

10. An impurity filtering device for industrial waste oil according to claim 2, characterized in that, A setting cavity is formed inside the filter installation plate. The setting cavity matches the shape of the filter screen. The filter screen is installed inside the setting cavity.