Oil filtering device for removing lubricating oil paint film

Abstract

The invention relates to an oil filtering device, in particular to an oil filtering device for removing a lubricating oil paint film, which comprises a rack, an oil filtering cylinder, a liquid inlet pipe, a top cover, a filtering mechanism and a cleaning mechanism, the top of the rack is connected with the oil filtering cylinder, the top of the oil filtering cylinder is connected with the top cover, the middle of the top cover is connected with the liquid inlet pipe, and the liquid inlet pipe is connected with the cleaning mechanism. A liquid inlet pipe is arranged on the top cover, the oil filter cylinder is provided with a slag discharge port, the top cover is provided with a liquid guide channel, one end of the liquid guide channel is communicated with the liquid inlet pipe, and the oil filter cylinder is internally provided with a filter mechanism used for filtering impurities in lubricating oil and a cleaning mechanism used for cleaning the impurities at the filtering position. When oil is filtered, filtered impurities can be located at the spiral feeding track, then the impurities can be cleaned through rotation of the spiral feeding track, the effect of automatically cleaning the impurities is achieved, the impurities are prevented from being attached to the filter frame, it is guaranteed that the filtering work is conducted, operation is more convenient, and the filtering efficiency is higher.

Description

Technical Field

[0001] The invention relates to an oil filter device, in particular to an oil filter device for removing lubricating paint film. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It mainly plays the role of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering. During the use of lubricating oil, some impurities will be mixed in. If the lubricating oil needs to be recycled, the impurities in the lubricating oil need to be removed.

[0003] At present, when removing impurities from lubricating oil, filtering equipment is usually used to remove impurities. However, during the removal, the impurities will adhere to the filter frame of the filtering equipment. If it is not cleaned for a long time, it will easily cause the filter frame to be blocked, affecting the filtering efficiency and the filtering effect on the lubricating oil. Therefore, the filter frame needs to be cleaned regularly. Each time the filter frame is cleaned, it needs to be removed for operation. The operation process is cumbersome and the cleaning efficiency is low. Summary of the invention

[0004] In view of this, the present invention provides an oil filtering device for removing lubricating paint film.

[0005] An oil filter device for removing lubricating paint film comprises a frame, an oil filter cartridge, a liquid inlet pipe, a top cover, a filtering mechanism and a cleaning mechanism, wherein the top of the frame is connected to the oil filter cartridge, the top of the oil filter cartridge is connected to the top cover, the middle of the top cover is connected to the liquid inlet pipe, the oil filter cartridge is provided with a slag discharge port, the top cover is provided with a liquid guide channel, one end of the liquid guide channel is connected to the liquid inlet pipe, and the oil filter cartridge is provided with a filtering mechanism for filtering impurities in the lubricating oil and a cleaning mechanism for cleaning impurities at the filtering point.

[0006] More preferably, the filtering mechanism includes an interlayer plate, a filter frame and a material guide frame, the interlayer plate is connected to the middle part of the oil filter cartridge, the filter frame is connected to the top of the interlayer plate, the space between the filter frame and the oil filter cartridge constitutes a filter chamber, the other end of the liquid guide channel extends to above the filter chamber, the bottom of the interlayer plate is connected to the material guide frame, the bottom of the material guide frame is connected to the bottom of the oil filter cartridge, an oil drain port is opened in the middle of the bottom of the oil filter cartridge, and the oil drain port is communicated with the material guide frame.

[0007] More preferably, the cleaning mechanism includes a spiral feed track, an outer gear ring, a servo motor, a driving gear and an extrusion block, the upper part of the oil filter cartridge is rotatably connected to the outer gear ring, the spiral feed track is connected to the outer gear ring, the spiral feed track is located in the filter chamber, a servo motor is installed on the oil filter cartridge, the output shaft of the servo motor is connected to the driving gear, the driving gear is meshed with the outer gear ring, and the oil filter cartridge is connected to an extrusion block, and the extrusion block is close to the oil drain port.

[0008] More preferably, it also includes a containing mechanism, which includes a mounting frame, a material guide pipe and a sealing cover. The lower inner portion of the oil filter cartridge is connected to the mounting frame, the mounting frame is connected to the material guide pipe, the material guide pipe passes through the oil filter cartridge, and a sealing cover is provided on the material guide pipe.

[0009] More preferably, a feeding mechanism is also included, which includes a guide tube, a connecting rope, a blocking block, an elastic member and a connecting frame, a plurality of guide tubes are connected to the lower part of the installation frame at evenly spaced intervals along the circumferential direction, the guide tube is inserted into the material guide frame, a blocking block is slidably connected to the inner side of the guide tube, an elastic member is connected between the blocking block and the guide tube, a connecting rope is connected to the sides of the plurality of blocking blocks that are close to each other, a connecting frame is connected between the plurality of connecting ropes, and the connecting frame is located in the material guide frame.

[0010] More preferably, it also includes an extrusion mechanism, which includes a lower pressure plate, a guide frame, a second elastic member, an inner tube, an extrusion disk, an outer tube and a third elastic member, the lower pressure plate is slidably connected to the upper inner portion of the filter frame, the top of the lower pressure plate is connected to the guide frame, the guide frame is slidably connected to the top cover, the second elastic member is connected between the guide frame and the top cover, the inner tube is connected to the middle of the bottom of the lower pressure plate, the outer tube is slidably connected to the outer side of the inner tube, the extrusion disk is connected to the outer tube, the extrusion disk is located above the material guide frame, the outer tube is located in the material guide frame, and the third elastic member is connected between the inner bottom of the outer tube and the lower pressure plate.

[0011] More preferably, a measuring mechanism is also included, which includes a measuring tube, a floating rod and a piston block. The oil filter cartridge is connected to a measuring tube, the outer side of the measuring tube is engraved with scales, the measuring tube is connected to the inside of the mounting frame, a floating rod is slidably connected inside the measuring tube, one end of the floating rod located outside the measuring tube is aligned with the scale outside the measuring tube, the position where the floating rod extends into the measuring tube is connected to a piston block, and the piston block is located inside the measuring tube.

[0012] More preferably, a reflux mechanism is also included, which includes a connecting pipe, a pump body and a reflux pipe. The oil discharge port is connected to a connecting pipe, a pump body is installed on the connecting pipe, the liquid suction end of the pump body is connected to the connecting pipe, and the liquid outlet end of the pump body is connected to the reflux pipe.

[0013] More preferably, a collecting frame is further included, the oil filter cartridge is connected with the collecting frame, and the collecting frame is located below the slag discharge port.

[0014] Beneficial effects of the present invention: 1. When filtering oil, the filtered impurities of the present invention will be located at the spiral feeding track, and then the impurities can be cleaned by rotating the spiral feeding track to achieve the effect of automatically cleaning the impurities, avoiding the impurities from adhering to the filter frame, ensuring the filtering work, making the operation more convenient and the filtering efficiency higher.

[0015] 2. When the lubricating oil of the present invention is discharged, it will push the connecting frame to move downward. When the connecting frame moves downward, the blockage will be pulled out through the connecting rope. Then the remover can enter the material guide frame and mix with the lubricating oil, thereby removing the paint film in the lubricating oil, so as to achieve the effect of treating the paint film in the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the oil filter cartridge, top cover and outer gear ring of the present invention.

[0018] Figure 3 It is a cross-sectional view of the oil filter cartridge of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the filtering mechanism and the cleaning mechanism of the present invention.

[0020] Figure 5 It is a schematic structural diagram of the filter frame, spiral feeding track and outer gear ring of the present invention.

[0021] Figure 6 It is a schematic structural diagram of the containing mechanism and the feeding mechanism of the present invention.

[0022] Figure 7 It is a cross-sectional view of the feeding mechanism of the present invention.

[0023] Figure 8 It is a structural schematic diagram of the extrusion mechanism of the present invention.

[0024] Fig. 9 It is a cross-sectional view of the extrusion mechanism of the present invention.

[0025] Fig.10 This is a schematic diagram of the first structure of the measuring mechanism of the present invention.

[0026] Fig.11 It is a second structural schematic diagram of the measuring mechanism of the present invention.

[0027] Fig.12 It is a structural schematic diagram of the reflux mechanism and the collection frame of the present invention.

[0028] Names of the numbers in the figure: 1. frame, 2. oil filter cartridge, 21. slag discharge port, 3. liquid inlet pipe, 4. top cover, 41. liquid guide channel, 51. interlayer plate, 52. filter frame, 53. material guide frame, 54. oil discharge port, 61. spiral feeding track, 62. outer gear ring, 63. servo motor, 64. driving gear, 65. extrusion block, 71. mounting frame, 72. material guide pipe, 73. sealing cover, 74. connecting frame, 81. guide pipe, 82. connecting rope, 83. blocking block, 84. elastic part one, 91. lower pressure plate, 92. guide frame, 93. elastic part two, 94. inner tube, 95. extrusion plate, 96. outer tube, 97. elastic part three, 101. measuring tube, 102. floating rod, 103. piston block, 111. connecting pipe, 112. pump body, 113. reflux pipe, 12. collecting frame. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0030] An oil filter device for removing lubricating paint film, such as Figure 1-Figure 5 As shown, it includes a frame 1, an oil filter cartridge 2, a liquid inlet pipe 3, a top cover 4, a filtering mechanism and a cleaning mechanism. The top of the frame 1 is connected to the oil filter cartridge 2, the top of the oil filter cartridge 2 is connected to the top cover 4, the middle of the top cover 4 is connected to the liquid inlet pipe 3, a slag discharge port 21 is provided on the upper left side of the oil filter cartridge 2, a liquid guide channel 41 is provided on the top cover 4, one end of the liquid guide channel 41 is connected to the liquid inlet pipe 3, and a filtering mechanism for filtering impurities in the lubricating oil and a cleaning mechanism for cleaning impurities at the filtering point are provided in the oil filter cartridge 2.

[0031] like Figure 2 and Figure 3 As shown, the filtering mechanism includes an interlayer plate 51, a filter frame 52 and a material guide frame 53. The interlayer plate 51 is connected to the middle part of the oil filter cartridge 2, and the filter frame 52 is connected to the top of the interlayer plate 51. The space between the filter frame 52 and the oil filter cartridge 2 constitutes a filter chamber. The other end of the liquid guide channel 41 extends to the top of the filter chamber so that the lubricating oil added at the liquid inlet pipe 3 can enter the filter chamber through the liquid guide channel 41. The interlayer plate 51 is connected to the material guide frame 53 in the middle of the bottom. The material guide frame 53 is communicated with the upper space of the interlayer plate 51, and the bottom of the material guide frame 53 is connected to the bottom of the oil filter cartridge 2. An oil discharge port 54 is opened in the middle of the bottom of the oil filter cartridge 2, and the oil discharge port 54 is communicated with the inside of the material guide frame 53.

[0032] like Figure 2-Figure 5As shown, the cleaning mechanism includes a spiral feeding track 61, an outer gear ring 62, a servo motor 63, a driving gear 64 and an extrusion block 65. The upper part of the oil filter cartridge 2 is rotatably connected to the outer gear ring 62, and the spiral feeding track 61 is connected inside the outer gear ring 62. The spiral feeding track 61 is located at the filter chamber. A servo motor 63 is installed on the right side outside the oil filter cartridge 2. The output shaft of the servo motor 63 is connected to the driving gear 64, and the driving gear 64 is meshed with the outer gear ring 62, so that the operation of the servo motor 63 can drive the spiral feeding track 61 to rotate through the driving gear 64 and the outer gear ring 62. An extrusion block 65 is connected to the upper left side of the oil filter cartridge 2, and the extrusion block 65 is close to the oil discharge port 54, so that the spiral feeding track 61 can transport the residue to the oil discharge port 54 when rotating, and discharge it through the oil discharge port 54.

[0033] When the lubricating oil needs to be filtered, the present device can be used. When in use, the liquid inlet pipe 3 is connected to the oil discharge end of the machine, so that the lubricating oil discharged by the machine will enter the liquid guide channel 41 through the liquid inlet pipe 3, and the lubricating oil in the liquid guide channel 41 will enter the filter chamber, and the lubricating oil will be filtered by the filter frame 52. The impurities mixed in the lubricating oil will be blocked by the filter frame 52 and remain in the filter chamber. At this time, the servo motor 63 is controlled to drive the driving gear 64 to rotate. When the driving gear 64 rotates, it drives the outer gear ring 62 to rotate. When the outer gear ring 62 rotates, it can drive the spiral conveyor The material track 61 rotates, and the spiral feeding track 61 can gradually transfer the impurities in the filter chamber upward when rotating. When the impurities are transferred to the slag discharge port 21, the impurities can be squeezed by the squeezing block 65, so that they are squeezed to the slag discharge port 21, and then discharged through the slag discharge port 21. The filtered lubricating oil will enter the filter frame 52, and finally flow into the material guide frame 53 and be discharged through the oil discharge port 54. In this way, the present device can be used to filter the lubricating oil and process the filtered impurities to avoid impurity accumulation and hinder the subsequent filtering work.

[0034] like Figure 6 and Figure 7 As shown, it also includes a containing mechanism, which includes a mounting frame 71, a material guide pipe 72 and a sealing cover 73. The lower part of the oil filter cartridge 2 is connected to the mounting frame 71, and the right side of the mounting frame 71 is connected to the material guide pipe 72. The material guide pipe 72 passes through the oil filter cartridge 2, and a sealing cover 73 is provided on the material guide pipe 72. After the sealing cover 73 is pulled out, a lubricating oil oxidation paint film remover, hereinafter referred to as the remover, can be added into the mounting frame 71 through the material guide pipe 72.

[0035] like Figure 6 and Figure 7As shown, it also includes a feeding mechanism, which includes a guide tube 81, a connecting rope 82, a blocking block 83, an elastic member 84 and a connecting frame 74. A plurality of guide tubes 81 are connected to the lower inner part of the installation frame 71 at uniform intervals along the circumferential direction. The guide tubes 81 penetrate into the material guide frame 53. The inner side of the guide tube 81 is slidably connected with a blocking block 83. Pulling out the blocking block 83 can make the interior of the installation frame 71 communicate with the interior of the material guide frame 53. An elastic member 84 is connected between the blocking block 83 and the guide tube 81. The elastic member 84 is a reset spring. The connecting rope 82 is connected to the side of the plurality of blocking blocks 83 that are close to each other. The connecting frame 74 is connected between the plurality of connecting ropes 82. The connecting frame 74 is located in the material guide frame 53.

[0036] Initially, the cover 73 can be opened, and then the remover can be injected into the installation frame 71 through the guide tube 72. After the remover is added, the cover 73 can be closed again, and the filtered lubricating oil will impact the connecting frame 74 when flowing through the guide frame 53, causing the connecting frame 74 to move downward. When the connecting frame 74 moves downward, it will pull the blocking block 83 outward through the connecting rope 82, and the elastic member 84 will be stretched. After the blocking block 83 moves, it will no longer block the guide tube 81. At this time, the remover in the installation frame 71 will enter the guide frame 53 through the guide tube 81, so that the remover is mixed with the lubricating oil, allowing the remover to dissolve the chemical agents and organic substances of the paint film in the lubricating oil, and restore the fluidity and lubricity of the lubricating oil. In this way, the paint film chemicals in the lubricating oil can be treated while filtering the oil.

[0037] like Figure 8 and Fig. 9 As shown, it also includes an extrusion mechanism, which includes a lower pressure plate 91, a guide frame 92, an elastic member 2 93, an inner tube 94, an extrusion disk 95, an outer tube 96 and an elastic member 3 97. The upper inner part of the filter frame 52 is slidably connected with the lower pressure plate 91, the top of the lower pressure plate 91 is connected to the guide frame 92, the guide frame 92 is slidably connected to the top cover 4, an elastic member 2 93 is connected between the guide frame 92 and the top cover 4, and the elastic member 2 93 is a connecting spring. The middle of the bottom of the lower pressure plate 91 is connected to the inner tube 94, the outer side of the inner tube 94 is slidably connected to the outer tube 96, the outer tube 96 is connected to the extrusion disk 95, the extrusion disk 95 is located above the material guide frame 53, the outer tube 96 is located in the material guide frame 53, and the inner bottom of the outer tube 96 is connected to the elastic member 3 97 between the lower pressure plate 91, and the elastic member 3 97 is a supporting spring.

[0038] After the oil filtering is completed, the guide frame 92 can be squeezed to move downward, and the elastic member 93 is compressed. When the guide frame 92 moves, it will drive the lower pressure plate 91 to move. When the lower pressure plate 91 moves, it will drive the inner tube 94, the extrusion plate 95 and the outer tube 96 to move downward together, until the extrusion plate 95 moves down to against the guide frame 53, and the extrusion plate 95 and the outer surface no longer move. At this time, the lower pressure plate 91 continues to move to drive the inner tube 94 to move downward, and the elastic member 3 97 is compressed. At this time, the lower pressure plate 91 and the extrusion plate 95 cooperate to squeeze the gas in the filter frame 52, so that the gas in the filter frame 52 is discharged through the filter holes thereon. When discharged, the impurities attached to the filter frame 52 will be squeezed, so that the impurities enter the spiral feeding track 61. In this way, the impurities attached to the filter frame 52 can be cleaned.

[0039] like Fig.10 and Fig.11 As shown, a measuring mechanism is also included, which includes a measuring tube 101, a floating rod 102 and a piston block 103. The measuring tube 101 is connected to the lower left side of the oil filter cartridge 2. The measuring tube 101 is engraved with scales. The measuring tube 101 is connected to the inside of the mounting frame 71. The floating rod 102 is slidably connected inside the measuring tube 101. One end of the floating rod 102 located outside the measuring tube 101 is aligned with the scale outside the measuring tube 101. The position where the floating rod 102 extends into the measuring tube 101 is connected to the piston block 103, and the piston block 103 is located in the measuring tube 101.

[0040] The remover in the mounting frame 71 will enter the measuring tube 101, and the remover in the measuring tube 101 will squeeze the piston block 103 upward, thereby driving the floating rod 102 to move upward. Through the principle of communicating vessels, the liquid level of the remover in the measuring tube 101 can be made consistent with the liquid level of the remover in the mounting frame 71. Subsequently, the liquid level in the mounting frame 71 can be observed through the position of the floating rod 102 at the measuring tube, so as to judge the amount of the remover in the mounting frame 71.

[0041] like Fig.12 As shown, a reflux mechanism is also included, which includes a connecting pipe 111, a pump body 112 and a reflux pipe 113. The oil discharge port 54 is connected to the connecting pipe 111, and the pump body 112 is installed on the connecting pipe 111. The liquid suction end of the pump body 112 is connected to the connecting pipe 111, and the liquid outlet end of the pump body 112 is connected to the reflux pipe 113.

[0042] When filtering the lubricating oil, the return pipe 113 can be connected to the oil inlet end of the machine, and the oil discharged through the oil discharge port 54 will enter the connecting pipe 111. Then, the pump body 112 can be controlled to operate to send the lubricating oil back to the machine through the return pipe 113, thereby achieving the effect of automatically sending the processed lubricating oil back to the machine.

[0043] like Fig.12 As shown, a collecting frame 12 is also included. The collecting frame 12 is connected to the upper left side of the oil filter cartridge 2. The collecting frame 12 is located below the slag discharge port 21 so that impurities flowing out of the slag discharge port 21 will fall into the collecting frame 12 and the impurities will be collected by the collecting frame 12.

[0044] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having benefit of this disclosure will appreciate that various other embodiments can be devised without departing from the scope of the present invention. Accordingly, the scope of the present invention should be limited only by the appended claims.

Claims

1. An oil filter device for removing lubricating paint film, characterized in that: The invention comprises a frame (1), an oil filter cartridge (2), a liquid inlet pipe (3), a top cover (4), a filtering mechanism and a cleaning mechanism, wherein the top of the frame (1) is connected to the oil filter cartridge (2), the top of the oil filter cartridge (2) is connected to the top cover (4), the middle of the top cover (4) is connected to the liquid inlet pipe (3), the oil filter cartridge (2) is provided with a slag discharge port (21), the top cover (4) is provided with a liquid guide channel (41), one end of the liquid guide channel (41) is connected to the liquid inlet pipe (3), and the oil filter cartridge (2) is provided with a filtering mechanism for filtering impurities in the lubricating oil and a cleaning mechanism for cleaning impurities at the filtering position.

2. An oil filter device for removing lubricating paint film as claimed in claim 1, characterized in that: The filtering mechanism comprises an interlayer plate (51), a filter frame (52) and a material guide frame (53); the middle part of the oil filter cartridge (2) is connected to the interlayer plate (51); the top of the interlayer plate (51) is connected to the filter frame (52); the space between the filter frame (52) and the oil filter cartridge (2) constitutes a filtering chamber; the other end of the liquid guide channel (41) extends to the top of the filtering chamber; the bottom of the interlayer plate (51) is connected to the material guide frame (53); the bottom of the material guide frame (53) is connected to the bottom of the oil filter cartridge (2); an oil discharge port (54) is provided in the middle of the bottom of the oil filter cartridge (2); the oil discharge port (54) is communicated with the inside of the material guide frame (53).

3. An oil filter device for removing lubricating paint film as claimed in claim 2, characterized in that: The cleaning mechanism comprises a spiral feeding track (61), an outer gear ring (62), a servo motor (63), a driving gear (64) and an extrusion block (65); the upper part of the oil filter cartridge (2) is rotatably connected to the outer gear ring (62); the spiral feeding track (61) is connected inside the outer gear ring (62); the spiral feeding track (61) is located at the filter chamber; the oil filter cartridge (2) is mounted with a servo motor (63); the output shaft of the servo motor (63) is connected to a driving gear (64); the driving gear (64) is meshed with the outer gear ring (62); the oil filter cartridge (2) is connected to an extrusion block (65); the extrusion block (65) is close to the oil discharge port (54).

4. An oil filter device for removing lubricating paint film as claimed in claim 3, characterized in that: It also includes a containing mechanism, the containing mechanism including a mounting frame (71), a material guide pipe (72) and a sealing cover (73); the lower part of the oil filter cartridge (2) is connected to the mounting frame (71); the mounting frame (71) is connected to the material guide pipe (72); the material guide pipe (72) passes through the oil filter cartridge (2); and the sealing cover (73) is provided on the material guide pipe (72).

5. An oil filter device for removing lubricating paint film as claimed in claim 4, characterized in that: The invention also comprises a feeding mechanism, the feeding mechanism comprising a guide tube (81), a connecting rope (82), a blocking block (83), an elastic member (84) and a connecting frame (74); a plurality of guide tubes (81) are connected to the lower inner part of the installation frame (71) at even intervals along the circumferential direction; the guide tubes (81) penetrate into the material guide frame (53); a blocking block (83) is slidably connected to the inner side of the guide tube (81); an elastic member (84) is connected between the blocking block (83) and the guide tube (81); a connecting rope (82) is connected to the sides of the plurality of blocking blocks (83) close to each other; a connecting frame (74) is connected between the plurality of connecting ropes (82); and the connecting frame (74) is located in the material guide frame (53).

6. An oil filter device for removing lubricating paint film as claimed in claim 5, characterized in that: The filter frame (52) further comprises an extrusion mechanism, wherein the extrusion mechanism comprises a lower pressure plate (91), a guide frame (92), a second elastic member (93), an inner tube (94), an extrusion disc (95), an outer tube (96) and a third elastic member (97); the lower pressure plate (91) is slidably connected to the upper inner portion of the filter frame (52); the top of the lower pressure plate (91) is connected to the guide frame (92); the guide frame (92) is slidably connected to the top cover (4); the guide frame (92) is slidably connected to the top cover (4); ), an elastic member 2 (93) is connected between the lower pressure plate (91), an inner tube (94) is connected to the middle of the bottom, an outer tube (96) is slidably connected to the outer side of the inner tube (94), an extrusion plate (95) is connected to the outer tube (96), the extrusion plate (95) is located above the material guide frame (53), the outer tube (96) is located inside the material guide frame (53), and an elastic member 3 (97) is connected between the inner bottom of the outer tube (96) and the lower pressure plate (91).

7. An oil filter device for removing lubricating paint film as claimed in claim 6, characterized in that: The invention also comprises a measuring mechanism, the measuring mechanism comprising a measuring tube (101), a floating rod (102) and a piston block (103); the oil filter cartridge (2) is connected to the measuring tube (101); the measuring tube (101) is engraved with scales on the outside; the measuring tube (101) is communicated with the inside of the mounting frame (71); the measuring tube (101) is slidably connected with the floating rod (102); one end of the floating rod (102) located outside the measuring tube (101) is aligned with the scales on the outside of the measuring tube (101); the piston block (103) is connected to the position where the floating rod (102) extends into the measuring tube (101); the piston block (103) is located inside the measuring tube (101).

8. An oil filter device for removing lubricating paint film as claimed in claim 7, characterized in that: The oil discharge port (54) further comprises a reflux mechanism, the reflux mechanism comprising a connecting pipe (111), a pump body (112) and a reflux pipe (113); the oil discharge port (54) is connected to the connecting pipe (111); the pump body (112) is mounted on the connecting pipe (111); the liquid extraction end of the pump body (112) is in communication with the connecting pipe (111); and the liquid discharge end of the pump body (112) is in communication with the reflux pipe (113).

9. An oil filter device for removing lubricating paint film as claimed in claim 8, characterized in that: It also includes a collecting frame (12), the oil filter cartridge (2) being connected to the collecting frame (12), the collecting frame (12) being located below the slag discharge port (21).

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