Self-cleaning bag filter

Abstract

The invention discloses a self-cleaning bag filter, and relates to the technical field of bag filters. Comprising a tank body and a filter bag, a rotating seat is rotatably installed in the tank body and divides the interior of the tank body into a filter cavity and a cleaning cavity, cleaning rings are symmetrically installed on the two sides of the top of the rotating seat, sliding grooves for the cleaning rings to move are formed in the two sides of the rotating seat, and first limiting blocks are fixed to the side walls, away from the rotating seat, of the cleaning rings; a plurality of groups of nozzles are mounted on the inner wall of the cleaning ring, adjusting assemblies are arranged in the nozzles, a threaded rod is rotatably mounted at the bottom end of the inner wall of the tank body through a motor, a moving seat is mounted on the outer wall of the threaded rod, two limiting seats are symmetrically fixed to the side wall of the moving seat, and limiting assemblies are arranged in the limiting seats. The interior of the tank body is divided into the independent filtering cavity and the independent cleaning cavity, switching between filtering and cleaning operation is achieved through alternate switching of the two cavities, and continuous operation of the filtering operation is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of bag filters, and particularly to a self-cleaning bag filter. Background Art

[0002] A filter is a device used to separate solid impurities, particles, and other pollutants in a fluid, and is widely used in many fields such as chemical industry, food, and environmental protection. Its working principle is mainly to use filter media such as filter screens and filter elements to intercept and adsorb impurities in the fluid, thereby achieving the purification of the fluid. The self-cleaning bag filter is an innovative product of the filter. By integrating automation technology on the basis of the filter, the pressure sensor monitors the clogging state of the filter bag, automatically triggers the self-cleaning system, and uses methods such as backwashing, mechanical brushing, and vibration peeling to remove impurities on the surface of the filter bag, so that the impurities on the filter bag fall off and into the collection chamber. There is no need to manually disassemble and replace the filter bag frequently, which can reduce manual intervention and maintenance costs, and balance efficiency and environmental protection.

[0003] There are various self-cleaning methods for existing self-cleaning bag filters, among which backwashing is the most common. Its working principle is to flush the filter bag with reverse-flowing liquid or gas. When the differential pressure sensor detects that the differential pressure inside and outside the filter bag reaches the set value, the control system will automatically start the backwashing program to strongly flush the surface of the filter bag, so that the particulate matter attached to the filter bag falls off and is discharged through the sewage valve. However, to ensure the self-cleaning effect, the device needs to temporarily stop the liquid inlet and suspend the filtration process, resulting in the interruption of the filtration operation and possibly interfering with the continuous production process.

[0004] In view of the above problems, there is an urgent need for innovative design on the original basis. Summary of the Invention

[0005] The purpose of the present invention is to provide a self-cleaning bag filter to solve the problem of stopping the filtration work during self-cleaning proposed in the above background art. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A self-cleaning bag filter, including a tank body and a filter bag. A rotating seat is rotatably installed inside the tank body, and the rotating seat divides the inside of the tank body into a filtration chamber and a cleaning chamber. Cleaning rings are symmetrically installed on both sides of the top of the rotating seat. Sliding grooves for the movement of the cleaning rings are opened on both sides of the rotating seat. A first limit block is fixed on the side wall of the cleaning ring away from the rotating seat. Multiple groups of nozzles are installed on the inner wall of the cleaning ring, and an adjustment component is arranged inside the nozzles. A threaded rod is rotatably installed at the bottom end of the inner wall of the tank body through a motor, a moving seat is installed on the outer wall of the threaded rod, two limit seats are symmetrically fixed on the side wall of the moving seat, and a limit component is arranged inside the limit seats.

[0007] The limiting component includes two sliding blocks vertically and limitingly slidably mounted on the surface of the upper limiting seat, and a fixed seat fixed inside the inner cavity of the upper limiting seat. The fixed seat is composed of a bottom plate member and a top sleeve. A transmission rod is slidably mounted at the central position of the fixed seat. A second limiting block is fixed at the bottom end of the transmission rod. A guiding block is slidably mounted on the upper part of the transmission rod. There are also two third limiting blocks vertically and limitingly slidably mounted inside the lower limiting seat.

[0008] Preferably, an extrusion block corresponding to the sliding block is mounted on the inner wall of the tank body.

[0009] Preferably, a sliding groove for the movement of the first limiting block is formed on the inner wall of the tank body, and the position of the first limiting block corresponds to the position of the limiting seat.

[0010] Preferably, the cross-section of the guiding block is designed in a Z shape, and the two side walls of the guiding block are designed as inclined surfaces.

[0011] Preferably, the inner wall of the sliding block is designed as an inclined surface corresponding to the side wall of the guiding block, and the sliding block is connected to the top of the fixed seat by a spring.

[0012] Preferably, the side walls of the two second limiting blocks away from the central position of the limiting seat are designed as inclined surfaces, and the two side walls of the two third limiting blocks are designed as inclined surfaces.

[0013] Preferably, the adjusting component includes multiple groups of rotating shafts rotatably mounted inside the nozzle, and multiple groups of first moving grooves formed inside the nozzle. A blade is fixed in the middle of the side wall of the rotating shaft. A driving ring is rotatably mounted inside the nozzle. Multiple groups of second moving grooves are formed on the surface of the driving ring. A driving block is rotatably mounted in the cavity of the side wall of the driving ring. There is also an adjusting ring rotatably mounted on the inner wall of the cleaning ring. An adjusting block is fixed on the side wall of the adjusting ring close to the rotating seat. An electric push rod with an extending end connected to the adjusting block is installed inside the cleaning ring.

[0014] Preferably, both ends of the rotating shaft are respectively located on the inner walls of the first moving groove and the second moving groove, and the bottom end of the driving block is limitingly and slidably mounted on the inner wall of the adjusting ring.

[0015] Preferably, the adjusting block is designed with an oblique angle, and a pressure sensor is arranged at the bottom of the rotating seat. The pressure sensor drives the electric push rod to move through a controller.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, through the rotation base, sliding groove, cleaning ring, first limit block, threaded rod and limit component provided, the interior of the tank is divided into an independent filtration chamber and a cleaning chamber. The seamless switching between filtration and cleaning operations is achieved through the alternating conversion of the two chambers, maintaining the continuous operation of the filtration work, improving production continuity and efficiency. With the cooperation of the limit component, after the rotation base rotates, the first limit block is locked by the limit component to ensure the stability of cleaning. The threaded rod can drive the cleaning ring to move vertically in a straight line along the sliding groove under the drive of the motor to comprehensively clean the filter bag.

[0017] 2. In the present invention, through the cleaning ring, nozzle and adjustment component provided, when the impurities accumulated on the inner wall of the filter bag are relatively thick, the nozzle diameter is automatically changed and the spraying pressure is adjusted to strongly impact the relatively thick impurities. The pressure sensor monitors the change of the filtration pressure in real time. When the pressure value exceeds the set threshold, a signal is immediately transmitted to the controller. After receiving the signal, the controller drives the electric push rod to extend, apply pressure to the adjustment block, cause the adjustment ring to rotate, and then push the drive block to make the drive ring rotate, so that multiple groups of blades rotate synchronously to adjust the nozzle diameter. When the nozzle diameter shrinks, the fluid spraying pressure increases, and with a strong impact force acting on the thick impurities on the inner wall of the filter bag, they are completely peeled off. It is dynamically adjusted according to the actual working conditions, improving the cleaning effect while avoiding damage to the filter bag caused by continuous strong impact and reducing the operation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic cross-sectional three-dimensional structure diagram of the present invention; Figure 3 is of the present invention Figure 2 the enlarged structure diagram at A in; Figure 4 is a schematic structure diagram of the filtration chamber, cleaning chamber, filter bag and rotation base of the present invention; Figure 5 is a schematic structure diagram of the cleaning ring of the present invention; Figure 6 is a schematic cross-sectional structure diagram of the cleaning ring of the present invention; Figure 7 is of the present invention Figure 6 the enlarged structure diagram at B in; Figure 8 is a schematic disassembled structure diagram of the nozzle of the present invention; Figure 9 is a schematic cross-sectional disassembled structure diagram of the nozzle of the present invention; Figure 10 is a schematic structure diagram of the moving base of the present invention; Figure 11 is a schematic cross-sectional structure diagram of the moving base of the present invention; Figure 12 For the present invention Figure 11 is a schematic enlarged view of the structure at position C in the present invention.

[0019] In the figure: 1, tank body; 101, filtration chamber; 102, cleaning chamber; 103, filter bag; 104, extrusion block; 2, rotating seat; 201, sliding groove; 3, cleaning ring; 301, first limiting block; 4, spray head; 401, first moving groove; 402, blade; 403, rotating shaft; 404, driving ring; 405, second moving groove; 406, driving block; 5, adjusting ring; 501, adjusting block; 502, electric push rod; 6, threaded rod; 601, moving seat; 602, limiting seat; 7, sliding block; 701, guiding block; 702, transmission rod; 703, fixing seat; 704, second limiting block; 705, third limiting block. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 12 , the present invention provides a technical solution: a self-cleaning bag filter, including a tank body 1 and a filter bag 103. A rotating seat 2 is rotatably installed inside the tank body 1. The rotating seat 2 divides the inside of the tank body 1 into a filtration chamber 101 and a cleaning chamber 102. On both sides of the top of the rotating seat 2, cleaning rings 3 are symmetrically installed. Sliding grooves 201 for the movement of the cleaning rings 3 are opened on both sides of the rotating seat 2. A first limiting block 301 is fixed on the side wall of the cleaning ring 3 away from the rotating seat 2. Multiple groups of spray heads 4 are installed on the inner wall of the cleaning ring 3. An adjusting assembly is arranged inside the spray head 4. The bottom end of the inner wall of the tank body 1 is rotatably installed with a threaded rod 6 through a motor. A moving seat 601 is installed on the outer wall of the threaded rod 6. Two limiting seats 602 are symmetrically fixed on the side wall of the moving seat 601. A limiting assembly is arranged inside the limiting seat 602. The rotating seat 2 divides the tank body 1 into a filtration chamber 101 and a cleaning chamber 102. By rotating regularly, the function switching of the two chambers is realized, and the cleaning of the filter bag 103 can be completed without stopping the machine, improving production continuity. The adjusting assembly monitors the pressure of the filter bag 103 in real time through a pressure sensor. When the pressure exceeds the threshold due to the accumulation of impurities, the controller drives the electric push rod 502 to adjust the caliber of the spray head 4, enhancing the spraying pressure to peel off thick-layer impurities, dynamically adjusting the cleaning intensity according to the working conditions, and avoiding damaging the filter bag 103 due to excessive impact.

[0022] The limit assembly includes two sliding blocks 7 vertically limited and slidably installed on the surface of the upper limit seat 602, and a fixed seat 703 fixed in the internal cavity of the upper limit seat 602. The fixed seat 703 is composed of a bottom plate and a top sleeve. A transmission rod 702 is slidably installed at the center position of the fixed seat 703. A second limit block 704 is fixed at the bottom end of the transmission rod 702. A guide block 701 is slidably installed on the upper part of the transmission rod 702. It also includes two third limit blocks 705 vertically limited and slidably installed inside the lower limit seat 602. The second limit block 704 and the third limit block 705 lock the first limit block 301 to ensure the stability of the work.

[0023] As an embodiment of the present invention, an extrusion block 104 corresponding to the sliding block 7 is installed on the inner wall of the tank body 1. When the rotating seat 2 rotates to switch the chamber function, the cleaning ring 3 drives the first limit block 301 to move. At this time, the sliding block 7 is in an initial state. When the first limit block 301 follows the moving seat 601 to descend, the sliding block 7 loses the restriction of the extrusion block 104 and extends out of the limit seat 602. With the cooperation of the spring and the guide block 701, the second limit block 704 extends out of the limit seat 602 to lock the first limit block 301, thereby ensuring the stability of the position of the cleaning ring 3 during the cleaning operation.

[0024] As an embodiment of the present invention, a slide groove for the movement of the first limit block 301 is opened on the inner wall of the tank body 1, and the position of the first limit block 301 corresponds to the position of the limit seat 602. When the rotating seat 2 drives the cleaning ring 3 to rotate, the first limit block 301 moves smoothly along the slide groove. The guiding effect of the slide groove effectively constrains the movement trajectory of the cleaning ring 3 to prevent it from deflecting or shaking during the rotation process, ensuring that the cleaning ring 3 can accurately reach the preset cleaning position. The first limit block 301 is designed to correspond to the position of the limit seat 602, so that after the cleaning ring 3 is in place, the first limit block 301 can be accurately embedded in the gap of the limit seat 602, providing basic conditions for the locking of the subsequent limit assembly.

[0025] As an embodiment of the present invention, the guide block 701 has a Z-shaped cross-section, and the two side walls of the guide block 701 are inclined. The guide block 701 with a Z-shaped cross-section can achieve force direction conversion, so that the sliding block 7 and the second limit block 704 can move towards each other.

[0026] As an embodiment of the present invention, the inner wall of the sliding block 7 is designed with an inclined surface corresponding to the side wall of the guide block 701. The sliding block 7 is connected to the top of the fixed seat 703 by a spring. When the sliding block 7 is away from the extrusion block 104, the spring is released to push the sliding block 7 inward, and the guide block 701 is driven to move laterally through the inclined surface, so that the second limit block 704 is extended to complete the locking. When the sliding block 7 contacts the extrusion block 104, the external force overcomes the spring force to move the sliding block 7 outward, driving the guide block 701 to move in the opposite direction, and releasing the locked state.

[0027] As an implementation manner of the present invention, the side walls of the two second limiting blocks 704 away from the central position of the limiting seat 602 are designed as inclined surfaces, and the two side walls of the two third limiting blocks 705 are designed as inclined surfaces. When the cleaning ring 3 is in place, the first limiting block 301 gradually enters the gap between the two third limiting blocks 705 along the inclined surface of the third limiting block 705 to form a fixed state. When the moving seat 601 moves downward, the sliding block 7 moves away from the extrusion block 104, and the sliding block 7 and the second limiting block 704 synchronously extend out of the limiting seat 602. The second limiting block 704 locks the first limiting block 301. When it is necessary to switch chambers, the first limiting block 301 can withdraw along the inclined surface of the third limiting block 705, avoiding difficult unlocking caused by component jamming and making the switching process of the rotating seat 2 more flexible and smooth.

[0028] As an implementation manner of the present invention, the adjusting assembly includes a plurality of groups of rotating shafts 403 rotatably installed inside the nozzle 4, and a plurality of groups of first moving grooves 401 opened inside the nozzle 4. A blade 402 is fixed in the middle of the side wall of the rotating shaft 403. A driving ring 404 is rotatably installed inside the nozzle 4. A plurality of groups of second moving grooves 405 are opened on the surface of the driving ring 404. A driving block 406 is rotatably installed in the cavity of the side wall of the driving ring 404. It further includes an adjusting ring 5 rotatably installed on the inner wall of the cleaning ring 3. An adjusting block 501 is fixed on the side wall of the adjusting ring 5 close to the rotating seat 2. An electric push rod 502 with an extending end connected to the adjusting block 501 is installed inside the cleaning ring 3.

[0029] As an implementation manner of the present invention, both ends of the rotating shaft 403 are respectively located on the inner walls of the first moving groove 401 and the second moving groove 405. The bottom end of the driving block 406 is slidably installed in the inner wall of the adjusting ring 5 in a limited manner. The cooperation of the rotating shaft 403, the moving groove and the driving block 406 constitutes an efficient and stable transmission link of the adjusting assembly. The bottom end of the driving block 406 is slidably installed in the inner wall of the adjusting ring 5 in a limited manner. When the electric push rod 502 drives the adjusting ring 5 to rotate, the adjusting ring 5 will push the driving block 406 to move, thereby driving the driving ring 404 to rotate synchronously. When the driving ring 404 rotates, the second moving groove 405 precisely drives the blade 402 to rotate around its own axis through the thrust on the rotating shaft 403, realizing the precise scaling of the nozzle diameter of the nozzle 4, making the fluid injection pressure adapt to impurities of different thicknesses, ensuring the cleaning effect and avoiding damage to the filter bag 103 caused by excessive flushing.

[0030] As an implementation manner of the present invention, the adjusting block 501 is designed with an inclined angle. A pressure sensor is provided at the bottom of the rotating seat 2. The pressure sensor drives the electric push rod 502 to move through the controller. When the extending end of the electric push rod 502 pushes the adjusting block 501, the adjusting ring 5 can rotate synchronously through the guidance of the inclined angle.

[0031] Working principle: After the self-cleaning bag filter has been used for a period of time, the rotating seat 2 starts to rotate, switching the filter bags 103 inside the filtration chamber 101 and the cleaning chamber 102, enabling the device to continuously carry out the filtration operation. As the rotating seat 2 rotates, the first limit block 301 installed on the side wall of the cleaning ring 3 moves smoothly along the chute, gradually approaching the moving seat 601, contacting and squeezing the third limit block 705. The inclined surface on the side wall of the third limit block 705 is squeezed and temporarily retracts into the limit seat 602. When the first limit block 301 smoothly enters the gap between the two limit seats 602, the third limit block 705 extends out of the limit seat 602 again under the push of the spring. Subsequently, the motor starts, the threaded rod 6 rotates, driving the moving seat 601 and the limit seat 602 to move downward synchronously. As the sliding block 7 moves away from the extrusion block 104, after losing the extrusion of the extrusion block 104, the sliding block 7 extends out towards the outer wall of the limit seat 602 under the elastic force of the spring. The inclined surface on the inner wall of the sliding block 7 contacts and squeezes the guide block 701, and the guide block 701 moves horizontally, driving the second limit block 704 to extend downward out of the outer wall of the limit seat 602, accurately locking the third limit block 705 and ensuring the stability of each component during the cleaning process; Since the rotating seat 2 rotates at a fixed time, the thickness of the impurities accumulated on the surface of the filter bag 103 is not uniform. The pressure sensor continuously monitors the pressure change of the filtration by the filter bag 103. When the impurities accumulated on the surface of the filter bag 103 are thick, resulting in the pressure value exceeding the set threshold, the pressure sensor immediately transmits the signal to the controller. After receiving the signal, the controller drives the electric push rod 502 to extend. The extending end of the electric push rod 502 presses against the adjusting block 501. The adjusting block 501 is designed with an inclined angle. When the adjusting block 501 is pushed, the adjusting ring 5 rotates synchronously. The bottom end of the driving block 406 is limited and slides on the inner wall of the adjusting ring 5. When the adjusting ring 5 rotates, it pushes the driving block 406, and the driving block 406 pushes the driving ring 404 to rotate. The second moving groove 405 squeezes the rotating shaft 403, and the rotating shaft 403 drives the blade 402 to move with the cooperation of the first moving groove 401, adjusting the diameter of the nozzle 4. When the diameter of the nozzle 4 shrinks, the fluid jet pressure increases. The strong impact force acts on the thick layer of impurities accumulated on the surface of the filter bag 103, completely peeling them off. The cleaning intensity is adjusted adaptively according to the actual working conditions, improving the cleaning effect, avoiding damage to the filter bag 103 caused by continuous strong impact, and extending the service life of the filter bag 103.

[0032] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cleaning bag filter, comprising a tank body (1) and a filter bag (103), characterized in that: A rotating seat (2) is rotatably installed inside the tank body (1). The rotating seat (2) divides the interior of the tank body (1) into two parts, a filtering chamber (101) and a cleaning chamber (102). On both sides of the top of the rotating seat (2), cleaning rings (3) are symmetrically installed. Sliding grooves (201) for the cleaning rings (3) to move are formed on both sides of the rotating seat (2). A first limiting block (301) is fixed on the side wall of the cleaning ring (3) away from the rotating seat (2). A plurality of groups of spray heads (4) are installed on the inner wall of the cleaning ring (3). An adjusting assembly is arranged inside the spray heads (4). At the bottom end of the inner wall of the tank body (1), a threaded rod (6) is rotatably installed by a motor. A moving seat (601) is installed on the outer wall of the threaded rod (6). Two limiting seats (602) are symmetrically fixed on the side wall of the moving seat (601). A limiting assembly is arranged inside the limiting seats (602); The limiting assembly includes two sliding blocks (7) vertically and limitingly slidably installed on the surface of the upper limiting seat (602), and a fixed seat (703) fixed in the inner cavity of the upper limiting seat (602). The fixed seat (703) is composed of a bottom plate member and a top sleeve. A transmission rod (702) is slidably installed at the central position of the fixed seat (703). A second limiting block (704) is fixed at the bottom end of the transmission rod (702). A guiding block (701) is slidably installed on the upper part of the transmission rod (702). It also includes two third limiting blocks (705) vertically and limitingly slidably installed inside the lower limiting seat (602).

2. The self-cleaning bag filter according to claim 1, characterized in that: An extrusion block (104) corresponding to the sliding block (7) is installed on the inner wall of the tank body (1).

3. The self-cleaning bag filter according to claim 2, wherein: A sliding groove for the first limiting block (301) to move is formed on the inner wall of the tank body (1). The position of the first limiting block (301) corresponds to the position of the limiting seat (602).

4. The self-cleaning bag filter according to claim 3, characterized in that: The cross section of the guiding block (701) is designed in a Z shape, and the two side walls of the guiding block (701) are designed as inclined surfaces.

5. The self-cleaning bag filter according to claim 4, characterized in that: The inner wall of the sliding block (7) is designed as an inclined surface corresponding to the side wall of the guiding block (701). The sliding block (7) is connected to the top of the fixed seat (703) by a spring.

6. The self-cleaning bag filter according to claim 5, characterized in that: The side walls of the two second limiting blocks (704) away from the central position of the limiting seat (602) are designed as inclined surfaces. The two side walls of the two third limiting blocks (705) are designed as inclined surfaces.

7. The self-cleaning bag filter according to claim 6, wherein: The adjusting assembly includes a plurality of groups of rotating shafts (403) rotatably installed inside the spray heads (4), and a plurality of groups of first moving grooves (401) formed inside the spray heads (4). Vanes (402) are fixed in the middle of the side walls of the rotating shafts (403). A driving ring (404) is rotatably installed inside the spray heads (4). A plurality of groups of second moving grooves (405) are formed on the surface of the driving ring (404). A driving block (406) is rotatably installed in the cavity of the side wall of the driving ring (404). It also includes an adjusting ring (5) rotatably installed on the inner wall of the cleaning ring (3). An adjusting block (501) is fixed on the side wall of the adjusting ring (5) close to the rotating seat (2). An electric push rod (502) with an extending end connected to the adjusting block (501) is installed inside the cleaning ring (3).

8. The self-cleaning bag filter according to claim 7, characterized in that: Both ends of the rotating shaft (403) are respectively located on the inner walls of the first moving groove (401) and the second moving groove (405), and the bottom end of the driving block (406) is installed in a limited sliding manner on the inner wall of the adjusting ring (5).

9. The self-cleaning bag filter according to claim 8, wherein: The adjusting block (501) is designed with an inclined angle, and a pressure sensor is arranged at the bottom of the rotating seat (2). The pressure sensor drives the electric push rod (502) to move through a controller.

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