Lubricating oil bag type filter

Abstract

According to the technical scheme, the lubricating oil bag type filter is characterized in that the lubricating oil bag type filter comprises a barrel, a supporting mesh basket is arranged in an inner cavity of the barrel, a filter bag is installed at the upper end of the supporting mesh basket, a cover plate is movably connected to the upper end of the barrel, a conveying pipe is arranged at the upper end of the cover plate, a sleeve is further arranged on the outer side of the conveying pipe in a sleeved mode, and the sleeve is connected with the supporting mesh basket. The upper end of the sleeve is provided with a handle, the cover plate below the handle and the handle are internally provided with screwing holes, the handle can be screwed to the cover plate through the screwing holes, the sleeve and the conveying pipe are both located above the filter bag, a sealing plate used for sealing the filter bag is arranged below the sleeve, the bottom of the conveying pipe is provided with an installation convex ring, and the installation convex ring is provided with a clamping groove. The mounting convex ring is rotationally connected with a rotating assembly used for dispersing and outputting lubricating oil, the bottom of the sleeve abuts against the rotating assembly, and the rotating assembly is arranged in the filter bag.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter field especially relates to a lubricating oil bag filter. BACKGROUND

[0002] As a commonly used lubricant, lubricating oil is widely used in mechanical equipment of various industries, plays a role in reducing friction and protecting mechanical components, and in the long-term use process, some mechanical particles or impurities inevitably mix in the inside, and long-term cleaning may cause damage to the equipment components, therefore, most of the equipment will be installed with some filtering devices for filtering treatment to ensure the normal operation of the equipment.

[0003] The existing lubricating oil filter mostly adopts a bag filter, that is, the filter bag is filtered by a bag filter, since the inlet of the general filter is fixed, the filter bag opposite to the inlet is always subjected to a large impact, and under the long-time work, a single position is prone to damage or blockage, thereby affecting the service life of the filter bag, meanwhile, since the lubricating oil has strong viscosity, the impurities are prone to be adhered to the filter bag during the filtering period, thereby blocking the filter bag, and the filtering effect is poor, at this time, the filter bag needs to be replaced manually, and the operation is complicated, meanwhile, when the filter bag is replaced, some lubricating oil is often left in the filter bag, and when the filter bag is taken out, the lubricating oil is taken out and dripped everywhere, thereby polluting the working environment and causing waste. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a lubricating oil bag filter which avoids that a single position of the filter bag is subjected to continuous impact, has a cleaning function on the impurities adhered to the filter bag, and has a certain recycling effect on the lubricating oil in the filter bag.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lubricating oil bag filter, comprising a cylinder, a support basket is arranged in the inner cavity of the cylinder, a filter bag is installed on the upper end of the support basket, a cover plate is movably connected to the upper end of the cylinder, characterized in that: a conveying pipe is arranged on the upper end of the cover plate, a sleeve is further sleeved outside the conveying pipe, a handle is arranged on the upper end of the sleeve, screw holes are arranged in the cover plate below the handle and in the handle, the handle can be screwed to the cover plate through the screw holes, the sleeve and the conveying pipe are located above the filter bag, a sealing plate for sealing the filter bag is arranged below the sleeve, an installation protruding ring is arranged at the bottom of the conveying pipe, a rotating assembly for dispersing and outputting lubricating oil is rotatably connected to the installation protruding ring, the bottom of the sleeve and the rotating assembly abut each other, and the rotating assembly is arranged in the filter bag.

[0006] Furthermore, the rotating assembly includes a rotating tube and a cleaning ring, the rotating tube is rotatably connected to the mounting convex ring, and a plurality of groups of nozzles are provided on the side wall below the rotating tube at equal intervals, and a plurality of the nozzles are connected to the rotating tube, and a plurality of the nozzles are of arc-shaped design, and a plurality of groups of nozzles are provided with a booster nozzle at the tail end, and a plurality of slide rails are also provided on the side wall of the rotating tube, and the slide rails are spaced apart from the nozzles, and a plurality of sliders are provided in the cleaning ring, and a plurality of the sliders slide in a plurality of slide rails respectively, and the cleaning ring is movably connected to the outside of the rotating tube through the sliders, and a cleaning rod is hinged to the bottom of a plurality of the sliders, and a scraper is provided at the tail end of the cleaning rod, and the scraper and the cleaning rod are arranged vertically, and the cleaning ring abuts against the bottom of the sleeve, and when the sleeve is pressed down, the cleaning ring can push the scraper to unfold in the filter bag.

[0007] Furthermore, a preset cavity is provided at the bottom of several of the slide rails, a push rod is provided in the preset cavity, the top of the push rod is facing the bottom of the slider, a return spring is provided at the bottom of the push rod, and both ends of the return spring respectively abut the bottom of the push rod and the bottom of the preset cavity.

[0008] Furthermore, a block is provided at the upper end of the cleaning rod.

[0009] Furthermore, a limiting groove is provided on the side wall of the delivery pipe, a limiting block is provided in the sleeve, the limiting block is clamped in the limiting groove, and the sleeve slides vertically on the outside of the delivery pipe through the limiting block.

[0010] Furthermore, the supporting mesh basket is provided with a protrusion, the filter bag includes a mounting ring and a filter screen, grooves are provided on both sides of the mounting ring, the grooves can be snapped into the protrusion, the mounting ring and the bottom of the sealing plate are both provided with magnets, and the mounting ring can be adsorbed to the bottom end of the sealing plate through the magnet.

[0011] Furthermore, a feed pipe is provided on the side wall of the cylinder, the delivery pipe and the feed pipe are in contact with each other and are connected to each other, and a sealing gasket is provided at the contact point between the delivery pipe and the feed pipe.

[0012] Furthermore, a servo electric cylinder is provided on the outer side of the cylinder, and the top end of the piston rod of the servo electric cylinder is screwed to the cover plate.

[0013] Beneficial effects of the utility model:

[0014] 1. Through the arrangement of the rotating tube and various components, when the lubricating oil is transported to the rotating tube through the delivery pipe, the rotating tube can transport the lubricating oil through several groups of nozzles. At the same time, due to the arc design of the nozzle, the reverse thrust generated when the lubricating oil is sprayed out will drive the rotating tube to rotate horizontally, thereby performing rotary spraying to avoid damage to a single position of the filter bag caused by continuous impact, thereby increasing the service life of the filter bag.

[0015] 2. Through the setting of the cleaning ring and various components, when the sleeve is pressed down to close the filter screen, the scraper at the tail of the cleaning rod will be expanded at 90 degrees and abut against the inside of the filter bag, so that the filter screen of the filter bag can be fully expanded, avoiding repeated stacking between the filter screens and affecting the filtration efficiency.

[0016] 3. Through the combination of the rotating tube and the cleaning ring, when the lubricating oil delivery generates thrust to make the rotating tube rotate horizontally, the scraper abutting against the filter bag can also be driven by it to scrape off the impurities adhering to the filter bag filter screen, ensuring smooth filtration of the filter screen and improving the service life and working efficiency of the filter bag.

[0017] 4. Through the setting of the sealing plate and the magnet inside the mounting ring, when the filter bag needs to be replaced, the user can shake the filter bag by moving the sleeve up and down to make the residual lubricating oil inside it flow out, thereby reducing the residual lubricating oil content in the filter bag, reducing the waste of lubricating oil and improving its recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main view of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is an exploded view of the components of the rotating assembly;

[0021] Figure 4 is an enlarged top view of the rotating tube;

[0022] Figure 5 This is an enlarged top view of the filter bag;

[0023] Figure markings: 1. Cylinder; 2. Support basket; 21. Bump; 3. Filter bag; 31. Mounting ring; 311. Groove; 312. Magnet; 32. Filter screen; 4. Cover plate; 5. Delivery pipe; 51. Mounting convex ring; 52. Limiting groove; 6. Sleeve; 61. Handle; 62. Sealing plate; 63. Limiting block; 7. Screw hole; 8. Rotating assembly; 81. Rotating tube; 811. Nozzle; 812. Booster nozzle; 813. Slide rail; 814. Preset cavity; 815. Push rod; 816. Return spring; 82. Cleaning ring; 821. Slider; 822. Cleaning rod; 823. Scraper; 824. Block; 9. Feed pipe; 10. Sealing gasket; 11. Servo electric cylinder. DETAILED DESCRIPTION

[0024] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0025] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the device or element; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance, in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be point connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For the ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Referring to Figures 1-5 The working principle of the embodiment is as follows:

[0027] When filtering is needed:

[0028] The handle 61 is lowered and screwed to the cover plate 4, and the sealing plate 62 below the sleeve 6 is closed on the filter bag 3 to form a seal, so as to avoid leakage of lubricating oil; at the same time, the sleeve 6 is lowered to push the cleaning ring 82 to move downward along the slide rail 813, and when the cleaning ring 82 moves downward, the cleaning rod 822 thereof is gradually unfolded because it abuts against the bottom of the slide rail 813, and the scraper 823 at the tail of the cleaning rod 822 is unfolded and abuts against the filter screen 32 of the filter bag 3, so as to avoid mutual stacking of the filter screens 32; at this time, the feeding pipe 9 is opened, and the lubricating oil enters the rotating pipe 81 from the feeding pipe 9 and the conveying pipe 5 and is sprayed out through the plurality of groups of spray pipes 811, and since the plurality of groups of spray pipes 811 are designed in an arc shape, when the lubricating oil is sprayed out, the generated counter thrust will drive the rotating pipe 81 to rotate horizontally, so as to perform rotary spraying, so as to avoid continuous impact on a single position of the filter bag 3; at the same time, since the rotating pipe 81 rotates horizontally, the plurality of groups of scrapers 823 abutting against the filter screen 32 can also be scraped off the impurities adhered to the filter screen 32 of the filter bag 3 under the driving of the rotating pipe 81, so as to ensure the smoothness of the filter screen 32, and improve the service life and working efficiency of the filter bag 3.

[0029] When filter bag 3 needs to be replaced:

[0030] The user first releases the screw connection between the handle 61 and the cover plate 4, and drives the sleeve 6 to move by shaking the handle 61 up and down. Due to the mutual magnetic attraction between the sealing plate 62 and the mounting ring 31, the shaking of the sleeve 6 can drive the filter bag 3 to shake, thereby reducing the residual lubricating oil content in the filter bag 3 and reducing the waste of lubricating oil; after the shaking is completed, the screw connection between the cover plate 4 and the cylinder 1 and the cover plate 4 and the handle 61 is released, and the user can start the servo electric cylinder 11, and the piston rod rises to drive the cover plate 4 and the sleeve 6 to rise. At this time, the filter bag 3 under the sealing plate 62 adsorbed by the magnet 312 will also rise together. When the piston rod is fully extended, the user only needs to remove the filter bag 3; the reinstalled filter bag 3 only needs to fit the groove 311 in the mounting ring 31 into the protrusion 21 of the supporting net basket 2, and when operating the servo electric cylinder 11, the piston rod retracts to drive the cover plate 4 to reset, and the installation is completed.

[0031] The user can also use the servo electric cylinder 11 to lift the filter bag 3 for a long time to force the lubricating oil remaining in the filter bag 3 to flow out of the filter bag 3, thereby recovering the lubricating oil.

[0032] Reference Figure 2 and Figure 3 As an improved specific embodiment, this high-efficiency lubricating oil bag filter includes a cylinder 1, the inner cavity of the cylinder 1 is provided with a supporting mesh basket 2, the upper end of the supporting mesh basket 2 is installed with a filter bag 3, the upper end of the cylinder 1 is movably connected with a cover plate 4, and is characterized in that: the upper end of the cover plate 4 is provided with a delivery pipe 5, the outer side of the delivery pipe 5 is also sleeved with a sleeve 6, the upper end of the sleeve 6 is provided with a handle 61, the cover plate 4 below the handle 61 and the handle 61 are both provided with screw holes 7, the handle 61 can be screwed to the cover plate 4 through the screw holes 7, the sleeve 6 and the delivery pipe 5 are both located above the filter bag 3, and a sealing plate 62 for sealing the filter bag 3 is provided below the sleeve 6, the bottom of the delivery pipe 5 is provided with a mounting convex ring 51, the mounting convex ring 51 is rotatably connected to a rotating component 8 for dispersing the output lubricating oil, the bottom of the sleeve 6 and the rotating component 8 conflict with each other, and the rotating component 8 is placed in the filter bag 3.

[0033] Through the arrangement of the rotating assembly 8, when the lubricating oil is delivered to the rotating pipe 81 through the delivery pipe 5, the rotating pipe 81 can deliver the lubricating oil through a plurality of groups of spray pipes 811, and at the same time, due to the arc design of the spray pipes 811, the reverse thrust generated when the lubricating oil is sprayed will drive the rotating pipe 81 to rotate horizontally, thereby performing rotary spraying, so as to avoid damage to the filter bag 3 caused by continuous impact on a single position, thereby improving the service life of the filter bag 3; at the same time, when the rotating pipe 81 rotates horizontally, the scraper 823 abutting against the filter bag 3 can also be driven to scrape off the impurities adhering to the filter screen 32 of the filter bag 3, thereby ensuring the smoothness of the filter screen 32 and improving the service life and working efficiency of the filter bag 3.

[0034] Through the arrangement of the sleeve 6, when the sleeve 6 is pressed down, the sealing plate 62 below can cover the filter bag 3 above to form a seal, thereby avoiding leakage of the lubricating oil; at the same time, when the sleeve 6 moves down, the scraper 823 in the cleaning ring 82 of the rotating assembly 8 can be expanded and abutted against the filter screen 32 of the filter bag 3, so that the filter screen 32 is fully expanded, thereby avoiding the influence of stacking on the working efficiency.

[0035] Reference Figure 2 and Figure 3 As an improved specific embodiment, the rotating assembly 8 comprises a rotating pipe 81 and a cleaning ring 82, the rotating pipe 81 is rotationally connected to the mounting convex ring 51, a plurality of groups of spray pipes 811 are arranged at equal intervals on the side wall below the rotating pipe 81, a plurality of the spray pipes 811 are in communication with the rotating pipe 81, a plurality of the spray pipes 811 are arc-shaped, a plurality of groups of the spray pipes 811 are provided with booster nozzles 812 at the tail portions, the side wall of the rotating pipe 81 is further provided with a plurality of slide rails 813, the slide rails 813 are distributed at intervals with the spray pipes 811, the cleaning ring 82 is provided with a plurality of slide blocks 821, a plurality of the slide blocks 821 are respectively slid in a plurality of the slide rails 813, the cleaning ring 82 is movably connected to the outer side of the rotating pipe 81 through the slide blocks 821, a plurality of the slide blocks 821 are further hingedly connected with cleaning rods 822, the cleaning rods 822 are provided with scrapers 823 at the tail portions, the scrapers 823 are arranged perpendicularly to the cleaning rods 822, the cleaning ring 82 abuts against the sleeve 6 below, and when the sleeve 6 is pressed down, the cleaning ring 82 can drive the scrapers 823 to expand in the filter bag 3.

[0036] When the sleeve 6 is pressed down, the cleaning ring 82 can be moved down along the slide rail 813 by the slider 821, and in the process of moving down, the cleaning rod 822 at the sliding bottom will be gradually unfolded due to the resistance to the bottom end of the slide rail 813. When the slider 821 moves to the bottom of the slide rail 813, the scraper 823 at the tail of the cleaning rod 822 will be unfolded by 90 degrees and abut against the filter bag 3. At this time, the user can deliver the lubricating oil to the rotating tube 81 through the delivery pipe 5 and spray it out through the booster nozzle 812 at the tail of the spray pipe 811. Since the spray pipes 811 are all arc-shaped in design, when the lubricating oil is sprayed out, the counter-thrust generated thereby will drive the rotating tube 81 to rotate horizontally, so that the rotating spray is realized, thereby avoiding the continuous impact on a single position of the filter bag 3. At the same time, since the rotating tube 81 rotates horizontally, the several groups of scrapers 823 abutting against the filter screen 32 can also be driven to scrape off the impurities adhered to the filter screen 32 of the filter bag 3, so that the smoothness of the filter screen 32 is ensured, and the service life and working efficiency of the filter bag 3 are improved.

[0037] When the output power of the lubricating oil delivered by the delivery pipe 5 is insufficient, the user can add a booster pump or other booster components at the feeding pipe 9. This is the prior art and will not be described in detail herein.

[0038] With reference to Figure 2 As an improved specific embodiment, the bottom of each of the slide rails 813 is provided with a preset cavity 814, and a push rod 815 is arranged in the preset cavity 814. The top of the push rod 815 is opposite to the bottom of the slider 821, and a return spring 816 is arranged at the bottom of the push rod 815.

[0039] With the combined arrangement of the push rod 815 and the return spring 816, when the filter works, the sleeve 6 moves down and pushes the cleaning ring 82 to move down. At this time, the push rod 815 and the return spring 816 are arranged in the preset cavity 814, so as to ensure the normal work of the components in the cleaning ring 82. When the filter bag 3 needs to be replaced, the sleeve 6 moves up and the cleaning ring 82 loses the pushing force. At this time, the return spring 816 in each of the preset cavities 814 pushes the push rod 815 to move up. At this time, the slider 821 moves up together under the pushing of the push rod 815. In the process of moving up of the slider 821, the cleaning rod 822 hinged at the tail of the slider 821 will be gradually folded up. After the cleaning rod 822 is folded up, the scraper 823 at the tail of the cleaning rod 822 will also be folded up, so as to avoid that the scraper 823 interferes with the filter screen 32 when the filter bag 3 is replaced, thereby affecting the normal replacement of the filter bag 3.

[0040] With reference to Figure 2 and Figure 3 As an improved specific embodiment, the upper end of the cleaning rod 822 is further provided with a clamping block 824.

[0041] When the cleaning rod 822 is expanded under pressure, the clamping block 824 ensures that the maximum expansion angle of the cleaning rod 822 is 90 degrees. When the cleaning rod 822 is expanded by 90 degrees, the clamping block 824 will abut against the side wall of the sliding block 821 to prevent the angle of the cleaning rod 822 from continuously expanding, thereby affecting the normal abutment of the scraper 823 against the filter screen 32 of the filter bag 3, and ensuring the work of the scraper 823.

[0042] With reference to Figure 2 And Figure 3 As an improved specific embodiment, the side wall of the conveying pipe 5 is provided with a limiting groove 52, the sleeve 6 is provided with a limiting block 63, the limiting block 63 is clamped in the limiting groove 52, and the sleeve 6 vertically slides outside the conveying pipe 5 through the limiting block 63.

[0043] Through the combined arrangement of the limiting groove 52 and the limiting block 63, the sleeve 6 can only vertically slide outside the conveying pipe 5, avoiding displacement, so as to ensure that the knob 61 can be normally screwed in the cover plate 4 for fixation, and also to avoid the position deviation of the magnetic stone 312 of the mounting ring 31 and the sealing plate 62 from being unable to be attracted.

[0044] With reference to Figure 2 And Figure 4 As an improved specific embodiment, the support basket 2 is provided with a protrusion 21, the filter bag 3 includes a mounting ring 31 and a filter screen 32, the mounting ring 31 is provided with a recess 311 on both sides, the recess 311 can be clamped in the protrusion 21, the mounting ring 31 and the bottom of the sealing plate 62 are each provided with a magnetic stone 312, and the mounting ring 31 can be attracted to the bottom end of the sealing plate 62 through the magnetic stone 312.

[0045] Through the combined arrangement of the recess 311 and the protrusion 21, the filter bag 3 can be clamped in the protrusion 21 of the support basket 2 through the recess 311 for limiting installation, avoiding displacement of the filter bag 3, so as to ensure the normal work of the rotating assembly 8; and through the arrangement of the magnetic stone 312, the sealing plate 62 can be attracted to the mounting ring 31 after being pressed down. When the filter bag 3 needs to be replaced, the user can move the sleeve 6 up and down to drive the sealing plate 62 to move up and down, and the movement of the sealing plate 62 can drive the filter bag 3 to shake, thereby reducing the content of residual lubricating oil in the filter bag 3, reducing the waste of lubricating oil, and improving the recycling benefit.

[0046] With reference to Figure 2 As an improved specific embodiment, the side wall of the cylinder body 1 is provided with a feeding pipe 9, the conveying pipe 5 and the feeding pipe 9 abut and are in communication with each other, and the abutment position of the conveying pipe 5 and the feeding pipe 9 is further provided with a sealing gasket 10.

[0047] Through the arrangement that the conveying pipe 5 and the feeding pipe 9 abut and conduct with each other, when the conveying pipe 5 and the feeding pipe 9 are separated from each other, the feeding pipe 9 can be directly connected with the external feeding equipment, and when the conveying pipe 5 moves, the feeding pipe 9 can not be affected and does not need to be disassembled from the feeding equipment; meanwhile, when the filter works normally, the conveying pipe 5 and the feeding pipe 9 can normally conduct, which is convenient for users to use.

[0048] With reference to Figure 2 As a specific embodiment of the improvement, the outer side of the barrel 1 is provided with a servo electric cylinder 11, and the top end of the piston rod of the servo electric cylinder 11 is screwed with the cover plate 4.

[0049] Through the arrangement of the servo electric cylinder 11, when the filter bag 3 is replaced, the user only needs to start the servo electric cylinder 11, and then the cover plate 4 can be lifted or lowered through the piston rod, which is convenient for the user to operate.

[0050] The barrel 1 and the cover plate 4 can be additionally provided with a plurality of screw holes 7 and are screwed and fixed with each other through the screw holes 7.

[0051] The user can screw according to the sealing requirement or the hoisting requirement, so as to meet the use requirement of the user, which is the prior art and will not be described too much herein.

[0052] Finally, it should be noted that: the above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A lubricating oil bag filter, comprising a cylinder (1), a support basket (2) provided in the inner cavity of the cylinder (1), a filter bag (3) mounted on the upper end of the support basket (2), and a cover plate (4) movably connected to the upper end of the cylinder (1), characterized in that: The upper end of the cover plate (4) is provided with a delivery pipe (5), the outer side of the delivery pipe (5) is also provided with a sleeve (6), the upper end of the sleeve (6) is provided with a handle (61), the cover plate (4) below the handle (61) and the handle (61) are both provided with screw holes (7), and the handle (61) can be screwed to the cover plate (4) through the screw holes (7), the sleeve (6) and the delivery pipe (5) are both located above the filter bag (3), and a sealing plate (62) for sealing the filter bag (3) is provided below the sleeve (6), and a mounting convex ring (51) is provided at the bottom of the delivery pipe (5), and the mounting convex ring (51) is rotatably connected to a rotating assembly (8) for dispersing and outputting lubricating oil, the bottom of the sleeve (6) and the rotating assembly (8) are in conflict with each other, and the rotating assembly (8) is placed in the filter bag (3).

2. The lubricating oil bag filter according to claim 1, characterized in that: The rotating assembly (8) includes a rotating tube (81) and a cleaning ring (82). The rotating tube (81) is rotatably connected to the mounting convex ring (51). A plurality of groups of nozzles (811) are provided at equal intervals on the side wall below the rotating tube (81). The plurality of nozzles (811) are connected to the inside of the rotating tube (81). The plurality of nozzles (811) are all of arc-shaped design. The tails of the plurality of groups of nozzles (811) are provided with a boost nozzle (812). The side wall of the rotating tube (81) is also provided with a plurality of slide rails (813). The slide rails (813) are spaced apart from the nozzles (811). The cleaning ring (82) A plurality of sliders (821) are provided inside the filter bag, and the plurality of sliders (821) slide in a plurality of slide rails (813) respectively. The cleaning ring (82) is movably connected to the outside of the rotating tube (81) through the sliders (821). The bottoms of the plurality of sliders (821) are also hinged with cleaning rods (822). The tail of the cleaning rod (822) is provided with a scraper (823). The scraper (823) and the cleaning rod (822) are arranged vertically. The cleaning ring (82) abuts against the bottom of the sleeve (6). When the sleeve (6) is pressed down, the cleaning ring (82) can push the scraper (823) to unfold in the filter bag (3).

3. The lubricating oil bag filter according to claim 2, characterized in that: A preset cavity (814) is provided at the bottom of each of the plurality of slide rails (813), a push rod (815) is provided in the preset cavity (814), the top of the push rod (815) faces the bottom of the slider (821), a return spring (816) is provided at the bottom of the push rod (815), and both ends of the return spring (816) respectively abut against the bottom of the push rod (815) and the bottom of the preset cavity (814).

4. The lubricating oil bag filter according to claim 2, characterized in that: The upper end of the cleaning rod (822) is also provided with a clamping block (824).

5. The lubricating oil bag filter according to claim 1, characterized in that: A limiting groove (52) is provided on the side wall of the delivery pipe (5), a limiting block (63) is provided in the sleeve (6), the limiting block (63) is clamped in the limiting groove (52), and the sleeve (6) slides vertically on the outside of the delivery pipe (5) through the limiting block (63).

6. The lubricating oil bag filter according to claim 1, characterized in that: The supporting mesh basket (2) is provided with a protrusion (21), and the filter bag (3) comprises a mounting ring (31) and a filter screen (32). Grooves (311) are provided on both sides of the mounting ring (31), and the grooves (311) can be snapped into the protrusion (21). Magnets (312) are provided at the bottom of the mounting ring (31) and the sealing plate (62), and the mounting ring (31) can be adsorbed on the bottom end of the sealing plate (62) through the magnet (312).

7. The lubricating oil bag filter according to claim 1, characterized in that: A feed pipe (9) is provided on the side wall of the cylinder (1), the delivery pipe (5) and the feed pipe (9) are in contact with each other and are in communication with each other, and a sealing gasket (10) is also provided at the contact point between the delivery pipe (5) and the feed pipe (9).

8. The lubricating oil bag filter according to claim 1, characterized in that: A servo electric cylinder (11) is provided on the outside of the cylinder (1), and the top end of the piston rod of the servo electric cylinder (11) is screwed to the cover plate (4).

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