Filtering equipment with automatic cleaning function

Abstract

The invention relates to the field of filtering equipment, in particular to filtering equipment with an automatic cleaning function, and belongs to the research and test development category of environmental protection technology and the like. The equipment comprises a butt joint part, a lower discharging part is arranged at the bottom of the butt joint part, a filtering part is arranged in the butt joint part, and an external control part is arranged above the filtering part; a cleaning part is arranged in the butt joint part, an inner adjusting groove is formed in the inner filter cylinder, a telescopic cylinder is slidably connected with the inner adjusting groove, and two groups of filter holes are designed, so that during filtration, an auxiliary through hole is communicated with the two groups of filter holes, wastewater can enter the inner adjusting groove through the filter holes and then flow into the telescopic cylinder through the auxiliary through hole, and efficient filtration is realized; in the cleaning state, the auxiliary through holes and the filtering holes are staggered, waste water can be prevented from continuously flowing in, meanwhile, conditions are created for cleaning operation, impurities are prevented from being mixed into filtered water again in the cleaning process, the filtering holes are prevented from being blocked by the impurities, and the problem that the impurities are likely to be squeezed into the filtering holes in the cleaning process is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of filtering equipment, in particular to an automatic cleaning filtering equipment. Background Art

[0002] In industrial wastewater treatment systems, as the filtration process continues, impurities will continue to accumulate on the filter medium, gradually blocking the filter channel and causing a significant drop in filtration efficiency. Against the backdrop of research and experimental development of environmental protection technologies, this problem has become increasingly prominent. In actual operation, the filter screen will be covered with a large amount of impurities in a short period of time, causing a sharp decrease in water flow. In order to maintain normal treatment flow, the filter medium has to be replaced frequently, which not only consumes a lot of manpower and material resources, but also seriously violates the principles of pursuing high efficiency, energy saving and rational use of resources in environmental protection technology. It also seriously affects the continuity of production and hinders the stable operation and technological innovation of industrial wastewater treatment systems in the field of environmental protection. In order to ensure the continuous operation of the wastewater treatment process, in the process of research and experimental development of environmental protection technologies, a new type of filtration equipment is urgently needed.

[0003] In the industrial wastewater treatment process, filters are often used to perform preliminary treatment on the wastewater. The current traditional cleaning methods mainly include regular replacement of filters and scraping to clean the inside of the filters. However, the filters are generally installed inside the filtration equipment, which makes the operation process of replacing the filters cumbersome and complicated. In actual operation, frequent shutdowns to replace filters will seriously affect the treatment efficiency and is not conducive to the long-term stable operation of the equipment. In addition, a large amount of impurities in industrial wastewater adhere to the surface of the filter. When using a scraper to clean, it is very easy to squeeze the impurities into the filter holes. Even after the cleaning process is completed, the filter may still be in a blocked state, which greatly reduces the filtration effect, greatly reducing the practicality of the filter and the operating efficiency of the filtration equipment, and cannot meet the needs of efficient industrial wastewater treatment. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic cleaning filter device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an automatic cleaning filtering device, comprising a docking part, the docking part comprising an outer cylinder, a debris removal screw opening being provided at the bottom of the docking part, a lower discharge part being provided at the bottom of the docking part, the lower discharge part comprising a docking screw block, the docking screw block being threadedly connected to the inside of the debris removal screw opening, the docking screw block being provided with six slag discharge holes distributed in a circular manner, a filter part being provided inside the docking part, the filter part comprising an inner filter cartridge, the inner filter cartridge being fixedly connected to the top of the inner wall of the outer cylinder, an inner adjustment groove being provided inside the inner filter cartridge, a telescopic cylinder being slidably connected inside the inner adjustment groove, an external control part being provided above the filter part, the external control part comprising an inner control ring, the inner control ring being rotatably connected to the top of the inner wall of the inner filter cartridge, and a cleaning part being provided inside the docking part.

[0006] Preferably, a circular axial hole is provided at the center position of the top of the outer cylinder, a dividing ring is fixedly connected to the inner wall of the outer cylinder, the inner wall of the dividing ring is fixedly connected to the bottom of the outer wall of the inner filter cylinder, four circumferentially distributed outer fixing frames are fixedly connected to the outer wall of the outer cylinder, a feed port is fixedly connected to the outer wall of the lower half of the outer cylinder, a discharge port is fixedly connected to the outer wall of the upper half of the outer cylinder, three circumferentially distributed limiting adjustment holes are provided at the top of the outer cylinder, a sealing groove is provided at the top of the inner wall of the outer cylinder, and the sealing groove is located at the center position of the three limiting adjustment holes.

[0007] Preferably, a center adjustment screw hole is provided at the center position of the docking screw block, and the center positions of the six slag discharge holes are provided with the center adjustment screw holes. The internal thread of the center adjustment screw hole is connected with an adjusting screw, and the top of the adjusting screw is fixed with a blocking block. The blocking block is movably inserted into the top of the docking screw block, and the blocking block can block the six slag discharge holes.

[0008] Preferably, a group of filter holes are provided on the inner and outer walls of the inner filter cylinder, and the two groups of filter holes are respectively connected to the inner and outer sides of the inner adjustment groove. The top of the inner adjustment groove is connected with three circumferentially distributed telescopic slots, and a group of circular ring structures are fixed on the top outer wall of the telescopic cylinder.

[0009] Preferably, an auxiliary through hole is provided on the outer wall of the telescopic cylinder, and the auxiliary through hole remains connected with the two groups of filter holes in the filtering state, and the auxiliary through hole remains staggered with the two groups of filter holes in the cleaning state. Three circumferentially distributed push arc plates are fixedly connected to the top of the telescopic cylinder, and the three push arc plates are respectively slidably connected to the inside of the three telescopic slots, and six groups of circumferentially distributed return springs are fixed to the bottom of the circular ring structure of the telescopic cylinder.

[0010] Preferably, the bottom of the inner control ring is provided with three circumferentially distributed outward slots, and the three outward slots are respectively inserted with the pushing arc plates corresponding to their respective positions in the cleaning state.

[0011] Preferably, a sealing ring is fixed to the top of the inner control ring, and the sealing ring is rotatably connected to the sealing groove. Three circumferentially distributed connecting rods are fixed to the top of the inner control ring, and the three connecting rods are slidably inserted in the limit adjustment holes corresponding to their respective positions. The tops of the three connecting rods are all fixed with locking screws, and the tops of the three connecting rods are covered with an outer control ring. Three circumferentially distributed docking holes are opened on the outer control ring, and the locking screws corresponding to their respective positions are inserted into the insides of the three docking holes. The outer control ring is fixed to the tops of the three connecting rods through the three locking screws and the external nuts. The tops of the three locking screws are all fixed with hand control handles through threads.

[0012] Preferably, the cleaning part includes a fixed frame, which is fixed to the top of the outer cylinder, and a control motor is fixed to the top of the fixed frame. The control motor is connected to a driving rod, and two pin holes are provided on the outer wall of the driving rod. The driving rod is movably inserted into the interior of the outer cylinder, and an assembly block is movably sleeved on the outer wall of the driving rod, and the assembly block is fixed in the axial hole of the outer cylinder.

[0013] Preferably, the outside of the driving rod is fixed with a docking sleeve, and two pin holes are opened on the docking sleeve. When the two pin holes of the driving rod and the docking sleeve are in an aligned state, pins are respectively inserted inside. Six groups of circumferentially distributed connecting brackets are fixedly connected to the outer wall of the docking sleeve, and the outside of the six groups of connecting brackets are fixed with scrapers, and the scraper positions of the six groups of scrapers are kept in contact with the inner wall of the inner filter cartridge.

[0014] Compared with the prior art, the present invention has the following beneficial effects: After the sewage is purified, the lower discharge part is threadedly connected to the impurity removal screw port at the bottom of the outer cylinder through a docking screw block. This detachable connection method makes it extremely convenient to clean impurities at the bottom of the equipment. When cleaning is needed, only the adjusting screw needs to be rotated to control the blocking block to separate from the slag discharge hole through the thread to release the blockage of the slag discharge hole, making it convenient to evenly and effectively discharge the remaining sewage with impurities through the slag discharge hole. By unscrewing it from the impurity removal screw port through the docking screw block, the impurities accumulated in the slag discharge hole can be cleaned centrally. There is no need to carry out complicated disassembly of the entire filter equipment like traditional equipment, which greatly saves cleaning time and labor costs.

[0015] The inner filter cartridge is fixedly connected to the top of the inner wall of the outer cartridge. The inner adjustment groove opened inside it and the slidingly connected telescopic cylinder, as well as the design of two groups of filter holes, realize a unique filtering function. In the filtering state, the auxiliary through-holes are connected to the two groups of filter holes. Wastewater can enter the inner adjustment groove through the filter holes and then flow into the telescopic cylinder through the auxiliary through-holes to achieve efficient filtration. In the cleaning state, the auxiliary through-holes and the filter holes are misaligned, which can prevent the wastewater from continuing to flow in and create conditions for the cleaning operation, avoiding impurities from mixing into the filtered water again during the cleaning process, and preventing impurities from clogging the filter holes, effectively avoiding the problem of impurities being squeezed into the filter holes during cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional assembly structure of the present invention; Figure 2 This is a bottom-up structural diagram of the three-dimensional assembly of the present invention; Figure 3 It is a schematic diagram of the decomposition structure of the present invention; Figure 4 It is a schematic diagram of the exploded bottom view structure of the present invention; Figure 5 It is a partial cross-sectional structural schematic diagram of the filtering state of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram of part A is shown; Figure 7 It is a partial cross-sectional structural schematic diagram of the present invention in a cleaning state; Figure 8 For the present invention Figure 7 The enlarged structural diagram of part B is shown; Figure 9 This is a schematic diagram of the assembly structure of the docking portion of the present invention; Figure 10 This is a schematic diagram of the assembly structure of the lower row portion of the present invention; Figure 11 This is a schematic diagram of the assembly structure of the filter portion and the dividing ring of the present invention; Figure 12 This is a schematic diagram of the assembly structure of the external control unit of the present invention; Figure 13 This is a schematic diagram of the cleaning unit assembly structure of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Docking unit; 101. Outer cylinder; 102. Outer fixing frame; 103. Feed port; 104. Discharge port; 105. Screw port for removing impurities; 106. Position adjustment hole; 107. Sealing groove; 2. Lower discharge unit; 201. Docking screw block; 202. Middle adjustment screw hole; 203. Slag discharge hole; 204. Adjusting screw; 205. Blocking block; 3. Filter unit; 301. Inner filter cartridge; 302. Inner adjustment slot; 303. Filter hole; 304. Telescopic slot; 305. Telescopic cylinder; 306. Auxiliary through hole ; 307, push arc plate; 308, reset spring; 4, dividing ring; 5, external control part; 501, internal control ring; 502, extended slot; 503, sealing ring; 504, connecting rod; 505, locking screw; 506, external control ring; 507, docking jack; 508, hand control handle; 6, cleaning part; 601, fixed frame; 602, control motor; 603, driving rod; 604, assembly block; 605, docking sleeve; 606, pin; 607, connecting bracket; 608, scraper. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1 - Figure 13 , an automatic cleaning filtering device comprises a docking part 1, the docking part 1 comprises an outer cylinder 101, a debris removal screw opening 105 is opened at the bottom of the outer cylinder 101, a lower discharge part 2 is provided at the bottom of the docking part 1, the lower discharge part 2 comprises a docking screw block 201, the docking screw block 201 is threadedly connected to the inside of the debris removal screw opening 105, and six slag discharge holes 203 distributed in a circumference are provided on the docking screw block 201. A filter part 3 is provided inside the docking part 1, and the filter part 3 comprises an inner filter cartridge 301, the inner filter cartridge 301 is fixed to the top of the inner wall of the outer cylinder 101, an inner adjustment groove 302 is opened inside the inner filter cartridge 301, and a telescopic cylinder 305 is slidably connected to the inside of the inner adjustment groove 302, an external control part 5 is provided above the filter part 3, the external control part 5 comprises an inner control ring 501, the inner control ring 501 is rotatably connected to the top of the inner wall of the inner filter cartridge 301, and a cleaning part 6 is provided inside the docking part 1.

[0020] A circular axial hole is provided at the center position of the top of the outer cylinder 101, a dividing ring 4 is fixedly connected to the inner wall of the outer cylinder 101, the inner wall of the dividing ring 4 is fixedly connected to the bottom of the outer wall of the inner filter cylinder 301, four circumferentially distributed outer fixing frames 102 are fixedly connected to the outer wall of the outer cylinder 101, a feed port 103 is fixedly connected to the outer wall of the lower half of the outer cylinder 101, a discharge port 104 is fixedly connected to the outer wall of the upper half of the outer cylinder 101, three circumferentially distributed limiting adjustment holes 106 are provided at the top of the outer cylinder 101, a sealing groove 107 is provided at the top of the inner wall of the outer cylinder 101, and the sealing groove 107 is located at the center position of the three limiting adjustment holes 106.

[0021] A central adjustment screw hole 202 is provided at the center position of the docking screw block 201, and a central adjustment screw hole 202 is provided at the center position of the six slag discharge holes 203. The internal thread of the central adjustment screw hole 202 is connected to an adjusting screw 204, and a blocking block 205 is fixed to the top of the adjusting screw 204. The blocking block 205 is movably inserted into the top of the docking screw block 201, and the blocking block 205 can block the six slag discharge holes 203.

[0022] Under the background of research and experimental development of environmental protection technology, the optimization of industrial wastewater treatment system is of great importance. In this embodiment, significant advantages are shown in this process. After the sewage is preliminarily purified, its lower discharge part 2 is threadedly connected to the impurity removal screw port 105 at the bottom of the outer tube 101 through the docking screw block 201. This detachable connection method makes it extremely convenient to clean impurities at the bottom of the equipment. When cleaning is needed, it is only necessary to rotate the adjusting screw 204 to control the blocking block 205 to separate from the slag discharge hole 203 through the thread to release the blockage of the slag discharge hole 203, so as to facilitate the uniform and effective discharge of sewage with impurities through the slag discharge hole 203. By unscrewing it from the impurity removal screw port 105 through the docking screw block 201, the impurities accumulated in the slag discharge hole 203 can be centrally cleaned without the need to disassemble the entire filter screen as in traditional equipment. This makes the operation process of the cleaning process smoother, greatly saving cleaning time and labor costs, and facilitating its use.

[0023] Example 2: Please refer to Figures 1-13 A group of filter holes 303 are provided on the inner and outer walls of the inner filter cylinder 301. The two groups of filter holes 303 are respectively connected to the inner and outer sides of the inner adjustment groove 302. The top of the inner adjustment groove 302 is connected with three circumferentially distributed telescopic slots 304, and a group of circular ring structures are fixed on the top outer wall of the telescopic cylinder 305.

[0024] An auxiliary through hole 306 is provided on the outer wall of the telescopic cylinder 305. The auxiliary through hole 306 is connected to the two groups of filter holes 303 in the filtering state. The auxiliary through hole 306 is staggered with the two groups of filter holes 303 in the cleaning state. Three circumferentially distributed push arc plates 307 are fixed to the top of the telescopic cylinder 305. The three push arc plates 307 are respectively slidably connected to the inside of the three telescopic slots 304. Six groups of circumferentially distributed return springs 308 are fixed to the bottom of the circular ring structure of the telescopic cylinder 305.

[0025] The bottom of the inner control ring 501 is provided with three circumferentially distributed outward slots 502 , and in the cleaning state, the three outward slots 502 are respectively inserted with push arc plates 307 corresponding to their respective positions.

[0026] The top of the inner control ring 501 is fixed with a sealing ring 503, and the sealing ring 503 is rotatably connected to the sealing groove 107. The top of the inner control ring 501 is fixed with three circumferentially distributed connecting rods 504, and the three connecting rods 504 are respectively slidably inserted in the limit adjustment holes 106 corresponding to their respective positions. The tops of the three connecting rods 504 are fixed with locking screws 505, and the tops of the three connecting rods 504 are covered with an outer control ring 506. Three circumferentially distributed docking holes 507 are opened on the outer control ring 506, and locking screws 505 corresponding to their respective positions are respectively inserted into the inside of the three docking holes 507. The outer control ring 506 is fixed to the tops of the three connecting rods 504 through three locking screws 505 and external nuts. The tops of the three locking screws 505 are all fixed with hand control handles 508 through threads.

[0027] The cleaning part 6 includes a fixed frame 601, which is fixedly connected to the top of the outer tube 101. A control motor 602 is fixedly connected to the top of the fixed frame 601. The control motor 602 is connected to a driving rod 603. Two pin holes are provided on the outer wall of the driving rod 603. The driving rod 603 is movably inserted into the interior of the outer tube 101. The outer wall of the driving rod 603 is movably covered with an assembly block 604, and the assembly block 604 is fixed to the axial hole of the outer tube 101.

[0028] The outside of the driving rod 603 is fixed with a docking sleeve 605, and two pin holes are opened on the docking sleeve 605. When the two pin holes of the driving rod 603 and the docking sleeve 605 are in an aligned state, pins 606 are respectively inserted inside. Six groups of connecting brackets 607 distributed in a circle are fixed to the outer wall of the docking sleeve 605. The outside of the six groups of connecting brackets 607 are all fixed with scrapers 608. The scraper positions of the six groups of scrapers 608 are kept in contact with the inner wall of the inner filter cartridge 301.

[0029] In this embodiment, the operator can rotate the hand control handle 508 to drive the connecting rod 504 and the inner control ring 501 to rotate. In the cleaning state, the outward extending slot 502 at the bottom of the inner control ring 501 can squeeze the push arc plate 307, thereby driving the telescopic cylinder 305 to move downward, changing the relative position of the auxiliary through hole 306 and the filter hole 303, and realizing the switching between the filtering and cleaning states. By controlling the misalignment of the auxiliary through hole 306 and the filter hole 303, the telescopic cylinder 305 blocks the filter hole 303, so as to prevent the impurities from being pushed and blocking the filter hole 303 during the cleaning process of impurities on the inner wall, and effectively avoid the problem that impurities may be squeezed into the filter hole 303 during cleaning and affect the later filtering effect.

[0030] It should be noted that after the dividing ring 4 is fixed inside the outer cylinder 101, it cooperates with the inner filter cylinder 301 to divide the internal space of the outer cylinder 101 into a feed area and a discharge area to prevent the wastewater from being remixed after treatment, so as to facilitate the filtration of the wastewater. At the same time, by connecting the feed area with the lower discharge part 2, it is convenient to directly drain and clean the blocked impurities, so as to maintain the clean state of the wastewater.

[0031] It should also be noted that the extended slot 502 and the push arc plate 307 maintain an active plug-in state, so that the inner control ring 501 cooperates with the extended slot 502 to squeeze the push arc plate 307 during the rotation process, forcing the push arc plate 307 and the telescopic cylinder 305 to be adjusted downward, so that the filter hole 303 and the auxiliary through hole 306 remain in a staggered state. Conversely, the reset spring 308 pushes the telescopic cylinder 305 to force the push arc plate 307 to retract, so that the filter hole 303 and the auxiliary through hole 306 remain in a connected state.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic cleaning filtering device, comprising a docking portion (1), characterized in that: The docking portion (1) comprises an outer casing (101), a screw opening (105) is provided at the bottom of the outer casing (101), a lower discharge portion (2) is provided at the bottom of the docking portion (1), the lower discharge portion (2) comprises a docking screw block (201), the docking screw block (201) is threadedly connected to the interior of the screw opening (105), six slag discharge holes (203) are provided on the docking screw block (201) and are distributed in a circumferential manner, a filter portion (3) is provided inside the docking portion (1), and the filter portion (3) comprises An inner filter cartridge (301) is fixedly connected to the top of the inner wall of the outer casing (101); an inner adjustment groove (302) is provided inside the inner filter cartridge (301); a telescopic cylinder (305) is slidably connected inside the inner adjustment groove (302); an outer control portion (5) is provided above the filter portion (3); the outer control portion (5) includes an inner control ring (501); the inner control ring (501) is rotatably connected to the top of the inner wall of the inner filter cartridge (301); and a cleaning portion (6) is provided inside the docking portion (1).

2. The automatic cleaning filter device according to claim 1, characterized in that: A circular axial hole is provided at the center position of the top of the outer tube (101); a dividing ring (4) is fixedly connected to the inner wall of the outer tube (101); the inner wall of the dividing ring (4) is fixedly connected to the bottom of the outer wall of the inner filter tube (301); four outer fixing frames (102) distributed in a circumferential manner are fixedly connected to the outer wall of the outer tube (101); a feed port (103) is fixedly connected to the outer wall of the lower half of the outer tube (101); a discharge port (104) is fixedly connected to the outer wall of the upper half of the outer tube (101); three limiting adjustment holes (106) distributed in a circumferential manner are provided at the top of the outer tube (101); a sealing groove (107) is provided at the top of the inner wall of the outer tube (101); the sealing groove (107) is located at the center position of the three limiting adjustment holes (106).

3. The automatic cleaning filter device according to claim 2, characterized in that: A central adjustment screw hole (202) is provided at the center of the butt screw block (201), and the central positions of the six slag discharge holes (203) are provided with the central adjustment screw holes (202). An adjusting screw rod (204) is connected to the inner thread of the butt screw block (201), and a blocking block (205) is fixed to the top of the adjusting screw rod (204). The blocking block (205) is movably plugged into the top of the butt screw block (201), and the blocking block (205) can block the six slag discharge holes (203).

4. The automatic cleaning filter device according to claim 1, characterized in that: A group of filter holes (303) are provided on the inner and outer walls of the inner filter cartridge (301), and the two groups of filter holes (303) are respectively connected to the inner side and the outer side of the inner adjustment groove (302). The top of the inner adjustment groove (302) is connected to three circumferentially distributed telescopic slots (304), and a group of circular ring structures are fixed to the outer wall of the top of the telescopic cylinder (305).

5. The automatic cleaning filter device according to claim 4, characterized in that: An auxiliary through hole (306) is provided on the outer wall of the telescopic cylinder (305). The auxiliary through hole (306) is connected to the two groups of filter holes (303) in the filtering state. The auxiliary through hole (306) is displaced from the two groups of filter holes (303) in the cleaning state. Three circumferentially distributed push arc plates (307) are fixedly connected to the top of the telescopic cylinder (305). The three push arc plates (307) are respectively slidably connected to the inside of the three telescopic slots (304). Six groups of circumferentially distributed return springs (308) are fixedly connected to the bottom of the circular ring structure of the telescopic cylinder (305).

6. The automatic cleaning filter device according to claim 5, characterized in that: The bottom of the inner control ring (501) is provided with three circumferentially distributed outward slots (502), and the three outward slots (502) are respectively inserted with the push arc plates (307) corresponding to their respective positions in the cleaning state.

7. The automatic cleaning filter device according to claim 2, characterized in that: The top of the inner control ring (501) is fixed with a sealing ring (503), and the sealing ring (503) is rotatably connected in the sealing groove (107). The top of the inner control ring (501) is fixed with three circumferentially distributed connecting rods (504), and the three connecting rods (504) are respectively slidably inserted in the limit adjustment holes (106) corresponding to their respective positions. The tops of the three connecting rods (504) are all fixed with locking screws (505). The outer control ring (506) is provided with three circumferentially distributed docking holes (507) on the outer control ring (506), and the locking screws (505) corresponding to their respective positions are inserted into the interiors of the three docking holes (507). The outer control ring (506) is fixed to the tops of the three connecting rods (504) through the three locking screws (505) and the external nuts. The tops of the three locking screws (505) are all fixed with hand control handles (508) through threads.

8. The automatic cleaning filter device according to claim 6, characterized in that: The cleaning portion (6) comprises a fixed frame (601), the fixed frame (601) is fixedly connected to the top of the outer tube (101), a control motor (602) is fixedly connected to the top of the fixed frame (601), the control motor (602) is connected to a driving rod (603), two pin holes are provided on the outer wall of the driving rod (603), the driving rod (603) is movably inserted into the interior of the outer tube (101), the outer wall of the driving rod (603) is movably covered with an assembly block (604), and the assembly block (604) is fixed in the axial hole of the outer tube (101).

9. The automatic cleaning filter device according to claim 8, characterized in that: The driving rod (603) is fixedly sleeved with a docking sleeve (605) on the outside. Two pin holes are provided on the docking sleeve (605). When the two pin holes of the driving rod (603) and the docking sleeve (605) are aligned, pins (606) are inserted into the inside respectively. Six groups of connecting brackets (607) distributed in a circumference are fixedly connected to the outer wall of the docking sleeve (605). The six groups of connecting brackets (607) are fixedly connected to the outside of each scraper (608). The scraper blades of the six groups of scrapers (608) are kept in contact with the inner wall of the inner filter cartridge (301).

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