Dust collecting bag convenient to install

Abstract

The invention discloses a dust collection bag convenient to install, and relates to the technical field of bag dust collection. Twelve top edge blocks are jacked out in a limited mode, the twelve top edge blocks are jacked out synchronously, a filter bag is expanded to be in a regular dodecagon shape, the dodecagon shape is expanded to enable the surface tension of the filter bag to be uniform, local too tight or loose is avoided, and the service life of the filter bag is prolonged. The dodecagonal structure increases the effective filtering area of the filter bag, the dust load in unit area is reduced, the regular shape guides airflow to uniformly penetrate through the filter bag, the dust layer is flatly distributed, the system resistance is reduced, the gas pressure in the sealing groove enables the top edge block to be tightly attached to the filter bag, gas leakage is prevented, and the service life of the filter bag is prolonged. Compared with a traditional round filter bag, the dodecagonal structure has the advantages that under the same cage skeleton diameter, the side edge unfolding area is increased, the surface tension distribution of the filter bag is more uniform, dust escape caused by local relaxation is avoided, and particles in airflow are fully intercepted.

Description

Technical Field

[0001] This invention relates to the field of baghouse dust collection technology, specifically to a dust collection bag that is easy to install. Background Technology

[0002] In the production process of alumina balls and alumina carriers, baghouse dust collectors serve as key environmental protection equipment. They achieve efficient dry dust removal through the filter bag filtration principle. A baghouse dust collector is a dry dust removal device that utilizes the filter bag filtration principle. It intercepts particulate matter in dust-laden gas through the filter bags, thus purifying the gas. The gas enters the dust collector housing through the inlet. As the gas passes through the filter bags, dust is captured by the surface or internal fibers of the filter bags. The filtered gas then enters the clean air chamber through the filter bag pores and is discharged by a fan. Regular cleaning is performed using methods such as pulse backflushing and mechanical vibration. Dust accumulates on the surface of the filter bag to maintain filtration efficiency. The filter bag, also known as a dust collector bag, is the core component for filtering dust. It is usually made of fibers such as polyester, polypropylene, and aramid. The surface can be coated with a membrane to improve filtration accuracy. The cage is a metal cage that supports the filter bag and prevents it from collapsing under the impact of airflow. Through a pulse jet cleaning system, compressed air is periodically sprayed in reverse to clean the filter bag, ensuring that alumina dust is removed in a timely manner. At the same time, it protects the quality of the downstream alumina balls. The dust removal cycle is dynamically adjusted according to the amount of alumina fed, achieving a balance between energy saving and high-efficiency dust removal.

[0003] Existing cages are mainly circular and polygonal. Circular cages are convenient for installing filter bags, but the overall filtration effect of the filter bags is poor. Polygonal cages are inconvenient for installing filter bags. When the edges of the polygonal cages come into contact with the flexible material of the filter bags, if the installation angle or force is not properly controlled, the edges will press on the surface of the filter bags, forming local depressions or wrinkles. The fit gap between the polygonal cages and the filter bags usually needs to be controlled at 10-15 mm. If the gap is too small, the filter bags are easily scratched by the edges. If the gap is too large, the filter bags will swing under the impact of airflow and collide with the cages to produce wrinkles. The airflow speed is increased at the wrinkles, and dust can easily pass directly through the filter bags, resulting in excessive emission concentrations. The wrinkles reduce the actual filtration area of ​​the filter bags, and the cleaning airflow cannot fully cover the wrinkles, so dust can easily accumulate and form a hardened layer, increasing the difficulty of cleaning. Summary of the Invention

[0004] Technical problems to be solved To address the problem that existing filter bags are easy to install onto circular cages but have insufficient filtration efficiency, this invention provides a dust collector bag that is easy to install.

[0005] Technical solution The present invention is achieved through the following technical solution: a dust collector bag that is easy to install, including a bag dust collector, wherein a partition is installed inside the bag dust collector, a pulse jet cleaning system is installed inside the bag dust collector, and several adjusting components are evenly distributed inside the bag dust collector. The adjustment assembly includes a cage and a polygonal frame. The cage is mounted on the inner surface of the partition, and the cage has several polygonal frames. Each polygonal frame has several supporting surfaces on its outer surface. Several sealing grooves are evenly distributed inside the cage. Top edge blocks are movably mounted on the inner walls of each sealing groove. Several fixed columns are evenly distributed on the inner walls of each sealing groove. Springs are installed inside each fixed column. Movable columns are mounted on one end of each spring. The outer surfaces of the movable columns are in contact with the interior of the fixed columns. One end of each movable column is fixedly connected to one end of the top edge block. Filter bags are movably mounted on the outer surface of the cage. The outer surfaces of the top edge blocks are in contact with the inner surface of the filter bags. The top edge blocks expand the filter bags into polygons, increasing the contact area, preventing filter bag wrinkles, reducing dust load per unit area, improving air permeability, ensuring uniform airflow penetration, and resulting in a flat dust layer distribution.

[0006] Furthermore, the adjustment assembly also includes positioning holes and positioning posts. Two positioning posts are installed on the top surface of the partition, and two positioning holes are opened inside the cage. The outer surface of the positioning post is in contact with the inner wall of the positioning hole.

[0007] Furthermore, an air pipe is installed on the outer surface of the pulse jet cleaning system, and two air pipes are installed on the outer surface of the pulse jet cleaning system.

[0008] Furthermore, a flexible tube is installed on one end surface of each of the two air tubes, and a ring tube is installed on one end surface of the two flexible tubes. A plurality of air supply tubes are evenly distributed on the bottom surface of the ring tube, and one end surface of the plurality of air supply tubes extends into the interior of the sealing groove.

[0009] Furthermore, the cage has two limiting cavities inside, and limiting sliders are movably installed on the inner walls of the two limiting cavities. A clamping ring is installed on the outer surface of the two limiting sliders.

[0010] Furthermore, the inner surface of the clamping ring is in movable contact with the outer surface of the filter bag, and a magnetic ring is movably installed on the top surface of the cage.

[0011] Furthermore, the cage is movably fitted with threaded nails, and a fastening groove is provided inside the cage. Two fixing rings are movably installed on the inner wall of the fastening groove.

[0012] Furthermore, a sealing rubber ring is installed on one end surface of each of the two fixing rings, and the outer surface of the sealing rubber ring is in contact with the outer surface of the filter bag.

[0013] Furthermore, a plurality of springs are evenly distributed and installed on the inner wall of the fastening groove, and one end surface of each spring is in movable contact with the outer surface of the fixing ring, and one end surface of the threaded pin is in movable contact with the outer surface of the fixing ring.

[0014] Beneficial effects The present invention has the following beneficial effects: (1) This easy-to-install dust collector bag, by limiting and ejecting the twelve top edge blocks, expands the filter bag into a regular dodecagon. The dodecagon expands the filter bag so that the surface tension of the filter bag is uniform, avoiding local over-tightness or looseness, and extending the filter bag life. The shape of the filter bag after expansion eliminates wrinkles and reduces dust accumulation dead corners. The dodecagon structure increases the effective filtration area of ​​the filter bag and reduces the dust load per unit area. The regular shape guides the airflow to penetrate the filter bag evenly, the dust layer is evenly distributed, and the system resistance is reduced. The gas pressure in the sealing groove makes the top edge blocks fit tightly with the filter bag to prevent air leakage. Compared with the traditional round filter bag, the dodecagon structure increases the side unfolding area under the same cage diameter, and the surface tension distribution of the filter bag is more uniform, avoiding dust escape caused by local looseness, ensuring that the particles in the airflow are fully intercepted. Moreover, after installation, the top edge blocks are ejected, which is more distributed for filter bag installation than directly limiting the position of the top edge blocks.

[0015] (2) This easy-to-install dust collector bag guides the airflow in a spiral and uniform upward motion through the regular shape of the filter bag. The dust forms a filter cake layer of uniform thickness on the surface of the filter bag, avoiding the excessive local dust accumulation caused by airflow vortex in traditional round filter bags. The flat surface of the dodecagonal filter bag reduces airflow friction and lowers the pressure drop. The uniformly distributed dust layer forms a porous media structure, further reducing the airflow penetration resistance. When the pulse jet cleaning system performs back-blowing cleaning through the air pipe, the pulse airflow diffuses evenly along the side of the dodecagonal support surface. This design avoids localized over- or under-cleaning of circular filter bags due to concentrated airflow. The flat dust layer is easily peeled off, reducing secondary dust generation and extending the filter bag's service life. The dodecagonal structure disperses the airflow pressure and mechanical tension on the filter bag along the sides, preventing damage caused by stress concentration at the top of the circular filter bag. The dodecagonal structure is more adaptable to high humidity and high viscosity dust, preventing dust from accumulating and clumping in corners. The uniform airflow distribution reduces the system's sensitivity to airflow fluctuations and minimizes filter bag swaying or collisions caused by uneven airflow.

[0016] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the bag filter dust collector of the present invention; Figure 2 This is a schematic diagram of the internal structure of the bag filter of the present invention; Figure 3 This is a schematic diagram of the overall structure of the pulse jet cleaning system of the present invention; Figure 4 This is a schematic diagram of the overall structure of the adjustment component of the present invention; Figure 5 This invention provides Figure 4 Enlarged schematic diagram of section A in the middle; Figure 6 This is a schematic diagram of the internal structure of the cloth adjustment component of the present invention; Figure 7 This invention provides Figure 6 Enlarged schematic diagram of section B; Figure 8 This is a schematic diagram of the overall structure of the polygonal frame of the present invention; Figure 9 This invention provides Figure 8 Enlarged schematic diagram of section C.

[0018] In the diagram: 1. Baghouse dust collector; 2. Partition plate; 3. Filter bag; 4. Cage; 5. Pulse jet cleaning system; 501. Air pipe one; 502. Air pipe two; 6. Positioning hole; 7. Positioning column; 8. Magnetic ring; 9. Fastening groove; 10. Threaded nail; 11. Fixing ring; 12. Sealing rubber ring; 13. Spring one; 14. Clamping ring; 15. Limiting slide cavity; 16. Limiting slider; 17. Ring pipe; 18. Flexible hose; 19. Air supply pipe; 20. Polygonal frame; 21. Support surface; 22. Sealing groove; 23. Fixing column; 24. Movable column; 25. Spring two; 26. Top edge block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0021] Please see Figures 1-9The present invention provides a technical solution: a dust collector bag that is easy to install, including a bag dust collector 1, a partition 2 installed inside the bag dust collector 1, a pulse jet cleaning system 5 installed inside the bag dust collector 1, and several adjusting components evenly distributed inside the bag dust collector 1. The adjustment assembly includes a cage 4 and polygonal frames 20. The cage 4 is mounted on the inner surface of the partition 2. Several polygonal frames 20 are provided on the cage 4. Several support surfaces 21 are provided on the outer surfaces of the polygonal frames 20. Several sealing grooves 22 are evenly distributed inside the cage 4. Top edge blocks 26 are movably installed on the inner walls of the sealing grooves 22. Several fixed posts 23 are evenly distributed on the inner walls of the sealing grooves 22. Springs 25 are installed inside the fixed posts 23. Movable posts 24 are installed on one end surface of the springs 25. The outer surfaces of the movable posts 24 are in movable contact with the interior of the fixed posts 23. One end surface of the movable posts 24 is in contact with the interior of the fixed posts 23. One end of the top edge block 26 is fixedly connected, and a filter bag 3 is movably installed on the outer surface of the cage 4. The outer surfaces of several top edge blocks 26 are in contact with the inner surfaces of the filter bag 3. The top edge blocks 26 expand the filter bag 3 into a polygon, increasing the contact area, preventing wrinkles in the filter bag 3, reducing the dust load per unit area, improving air permeability, ensuring uniform airflow penetration, and resulting in a smooth dust layer distribution. The filter bag 3 is expanded into a regular dodecagon. The dodecagon expansion ensures uniform surface tension of the filter bag 3, preventing local over-tightness or looseness, extending the life of the filter bag 3. The expanded shape of the filter bag 3 eliminates wrinkles, reduces dust accumulation dead corners, increases the effective filtration area of ​​the filter bag 3, reduces the dust load per unit area, and the regular shape guides the airflow to penetrate evenly. The filter bag 3 features a flat dust layer distribution, reducing system resistance. Gas pressure within the sealing groove 22 ensures a tight seal between the top edge block 26 and the filter bag 3, preventing air leakage. Compared to traditional circular filter bags 3, the dodecagonal structure increases the lateral surface area for the same cage diameter 4, resulting in a more uniform surface tension distribution and preventing dust escape due to localized relaxation. This ensures that particles in the airflow are effectively intercepted. The regular shape of the filter bag 3 guides the airflow in a spiral, uniform upward motion, forming a uniformly thick filter cake layer on the surface of the filter bag 3. This avoids the excessive localized dust accumulation caused by airflow vortices in traditional circular filter bags 3. The flat surface of the dodecagonal filter bag 3 reduces airflow friction, lowers pressure drop, and the uniformly distributed dust layer forms a porous media structure, further... By reducing airflow penetration resistance, and then using the pulse jet cleaning system 5 to perform back-blowing cleaning through the air pipe 501, the pulse airflow is evenly diffused along the side of the dodecagonal support surface 21, avoiding local over-cleaning or under-cleaning of the circular filter bag 3 due to concentrated airflow. The flat dust layer is easily peeled off, reducing secondary dust and extending the service life of the filter bag 3. The dodecagonal structure disperses the airflow pressure and mechanical tension borne by the filter bag 3 along the side, avoiding damage caused by stress concentration at the top of the circular filter bag 3. The dodecagonal structure is more adaptable to high humidity and high viscosity dust, and dust is less likely to accumulate and clump in corners. The uniform airflow distribution reduces the system's sensitivity to airflow fluctuations and reduces the swaying or collision of the filter bag 3 caused by uneven airflow.

[0022] The adjustment assembly also includes positioning holes 6 and positioning posts 7. Two positioning posts 7 are installed on the top surface of the partition plate 2. Two positioning holes 6 are opened inside the cage 4. The outer surface of the positioning post 7 is in contact with the inner wall of the positioning hole 6. An air pipe 501 is installed on the outer surface of the pulse jet cleaning system 5. Two air pipes 502 are installed on the outer surface of the pulse jet cleaning system 5. A flexible hose 18 is installed on one end of each of the two air pipes 502. A ring pipe 17 is installed on one end of each of the two flexible hoses 18. Twelve air supply points are evenly distributed on the bottom surface of the ring pipe 17. Pipe 19, one end of each of the twelve air supply pipes 19 extends into the interior of the sealing groove 22. By opening the solenoid valve of the second air pipe 502, air is supplied to the ring pipe 17 through the hose 18, and then gas is filled into the sealing groove 22 through the air supply pipes 19, thereby causing the top edge block 26 to move within the sealing groove 22. The top edge block 26 drives several movable columns 24 to move. The movable columns 24 stretch the second spring 25 within the fixed column 23, thereby causing the twelve top edge blocks 26 to be pushed out in a limited position. The twelve top edge blocks 26 are pushed out simultaneously, stretching the filter bag 3 into a regular dodecagon.

[0023] The cage 4 has two limiting sliding cavities 15 inside. Limiting sliders 16 are movably installed on the inner walls of both limiting sliding cavities 15. Clamping rings 14 are installed on the outer surfaces of both limiting sliders 16. The inner surface of the clamping rings 14 is in movable contact with the outer surface of the filter bag 3. A magnetic ring 8 is movably installed on the top surface of the cage 4. Threaded pins 10 are movably installed inside the cage 4. A fastening groove 9 is provided inside the cage 4. Two fixing rings 11 are movably installed on the inner wall of the fastening groove 9. A sealing rubber ring 12 is installed on one end surface of each fixing ring 11. The outer surface of the sealing rubber ring 12 is in contact with the outer surface of the filter bag. The outer surface of the filter bag 3 is in active contact with the inner wall of the fastening groove 9. Several springs 13 are evenly distributed and installed on the inner wall of the fastening groove 9. One end of each spring 13 is in active contact with the outer surface of the fixing ring 11. One end of the threaded nail 10 is in active contact with the outer surface of the fixing ring 11. The threaded nail 10 compresses the fixing ring 11, and the fixing ring 11 stretches the springs 13. This causes the fixing ring 11 to drive the sealing rubber ring 12 to compress and fix the outer surface of the filter bag 3. This makes the top surface of the filter bag 3 fixedly and quickly fixed inside the top of the keel, thus quickly fixing the filter bag 3 to the outside of the cage 4.

[0024] The specific workflow of this invention is as follows: During the production of alumina balls and alumina carriers, when it is necessary to install the filter bag 3, the filter bag 3 is placed on the outside of the cage 4. The clamping part of the clamping ring 14 is made of elastic 304 stainless steel, and the bottom opening is designed to expand radially, which facilitates clamping the filter bag 3. The top is made of magnetic material. The top of the filter bag 3 is inserted into the clamping ring 14. The magnetic ring 8 is attracted to the top surface of the cage 4, and the magnetic ring 8 attracts the clamping ring 14, thereby causing the clamping ring 14 to drive the two limiting sliders 16 to move in the limiting sliding cavity 15, so that the clamping ring 14 moves to the top of the cage 4. By rotating the threaded nail 10, the threaded nail 10 squeezes the fixing ring 11, and the fixing ring 11 stretches the spring 13, so that the fixing ring 11 drives the sealing rubber ring 12 to squeeze and fix the outer surface of the filter bag 3, thereby limiting and quickly fixing the top surface of the filter bag 3 in the cage 4, thus quickly fixing the filter bag 3 on the outside of the cage 4.

[0025] Insert the cage 4 into the positioning hole 6 corresponding to the positioning post 7, thereby limiting the installation of the cage 4. Connect the second air pipe 502 to the air pipe connector of the clamp ring 14 through the hose 18. Solenoid valves are installed inside the first air pipe 501 and the two second air pipes 502. By opening the solenoid valve of the second air pipe 502, air is supplied to the ring pipe 17 through the hose 18, and then gas is filled into the sealing groove 22 through the air supply pipe 19, thereby moving the top edge block 26 within the sealing groove 22. The polygonal frame 20 is polygonal, usually dodecagonal. The top edge block 26 drives several movable posts 24 to move. The movable posts 24 are on the fixed post The spring 25 is stretched within the 23, causing the twelve top edge blocks 26 to be ejected simultaneously, expanding the filter bag 3 into a regular dodecagon. This dodecagonal expansion ensures uniform surface tension of the filter bag 3, preventing localized over-tightness or looseness, thus extending its lifespan. The expanded shape of the filter bag 3 eliminates wrinkles, reducing dust accumulation dead zones. The dodecagonal structure increases the effective filtration area of ​​the filter bag 3, reducing dust load per unit area. The regular shape guides airflow to penetrate the filter bag 3 evenly, resulting in a smooth dust layer distribution and reduced system resistance. The gas pressure within the sealing groove 22 ensures a tight seal between the top edge blocks 26 and the filter bag 3, preventing air leakage. Compared to traditional circular filter bags 3, the dodecagonal structure increases the lateral unfolding area under the same cage diameter 4, resulting in a more uniform surface tension distribution. This prevents dust escape caused by localized relaxation and ensures that particles in the airflow are fully intercepted. The regular shape of the filter bag 3 guides the airflow to rise evenly in a spiral pattern, forming a uniformly thick filter cake layer on the surface of the filter bag 3. This avoids excessive localized dust accumulation caused by airflow vortices in traditional circular filter bags 3. The flat surface of the dodecagonal filter bag 3 reduces airflow friction and lowers pressure drop. The uniformly distributed dust layer forms a porous media structure, further reducing airflow penetration resistance. Then, the dust is removed through the pulse jet cleaning system 5 via an air duct. When the 501 performs backflushing cleaning, the pulse airflow is evenly diffused along the side of the dodecagonal support surface 21, avoiding local over-cleaning or under-cleaning of the circular filter bag 3 due to concentrated airflow. The flat dust layer is easy to peel off, reducing secondary dust and extending the service life of the filter bag 3. The dodecagonal structure disperses the airflow pressure and mechanical tension borne by the filter bag 3 along the side, avoiding damage caused by stress concentration at the top of the circular filter bag 3. The dodecagonal structure is more adaptable to high humidity and high viscosity dust, and dust is less likely to accumulate and clump in corners. The uniform airflow distribution reduces the system's sensitivity to airflow fluctuations and reduces the swaying or collision of the filter bag 3 caused by uneven airflow.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dust collector bag that is easy to install, comprising a bag dust collector (1), characterized in that: The bag filter (1) is equipped with a partition (2), a pulse jet cleaning system (5) is installed inside the bag filter (1), and several adjustment components are evenly distributed inside the bag filter (1). The adjustment assembly includes a cage (4) and a polygonal frame (20). The cage (4) is installed on the inner surface of the partition (2). Several polygonal frames (20) are provided on the cage (4). Several support surfaces (21) are provided on the outer surfaces of the polygonal frames (20). Several sealing grooves (22) are evenly distributed inside the cage (4). Top edge blocks (26) are movably installed on the inner walls of the several sealing grooves (22). Several fixing posts (23) are evenly distributed on the inner walls of the several sealing grooves (22). Springs (25) are installed inside the several fixing posts (23). One end surface of each spring (25) is equipped with a movable column (24). The outer surfaces of several movable columns (24) are in contact with the interior of the fixed column (23). One end surface of several movable columns (24) is fixedly connected to one end surface of the top edge block (26). The outer surface of the cage (4) is movably equipped with a filter bag (3). The outer surfaces of several top edge blocks (26) are in contact with the inner surface of the filter bag (3). Several top edge blocks (26) support the filter bag (3) into a polygon, increasing the contact area, avoiding wrinkles in the filter bag (3), reducing the dust load per unit area, improving air permeability, allowing airflow to penetrate evenly, and ensuring a flat dust layer distribution.

2. The dust collector bag that is easy to install according to claim 1, characterized in that: The adjustment assembly also includes positioning holes (6) and positioning posts (7). Two positioning posts (7) are installed on the top surface of the partition (2). Two positioning holes (6) are opened inside the cage (4). The outer surface of the positioning post (7) is in contact with the inner wall of the positioning hole (6).

3. The dust collector bag that is easy to install according to claim 2, characterized in that: The outer surface of the pulse jet cleaning system (5) is equipped with an air pipe (501) and two air pipes (502) are installed on the outer surface of the pulse jet cleaning system (5).

4. A dust collector bag that is easy to install according to claim 3, characterized in that: Both of the two air tubes (502) have a hose (18) installed on one end surface. Both hoses (18) have a ring tube (17) installed on one end surface. Several air supply tubes (19) are evenly distributed on the bottom surface of the ring tube (17). One end surface of several air supply tubes (19) extends into the interior of the sealing groove (22).

5. A dust collector bag that is easy to install according to claim 1, characterized in that: The cage (4) has two limiting cavities (15) inside. Limiting sliders (16) are movably installed on the inner walls of the two limiting cavities (15). A clamping ring (14) is installed on the outer surface of the two limiting sliders (16).

6. A dust collector bag that is easy to install according to claim 5, characterized in that: The inner surface of the clamping ring (14) is in active contact with the outer surface of the filter bag (3), and a magnetic ring (8) is movably installed on the top surface of the cage (4).

7. A dust collector bag that is easy to install according to claim 6, characterized in that: The cage (4) is movably fitted with threaded nails (10), and the cage (4) is provided with a fastening groove (9). Two fixing rings (11) are movably installed on the inner wall of the fastening groove (9).

8. A dust collector bag that is easy to install according to claim 7, characterized in that: A sealing rubber ring (12) is installed on one end surface of each of the two fixing rings (11), and the outer surface of the sealing rubber ring (12) is in active contact with the outer surface of the filter bag (3).

9. A dust collector bag that is easy to install according to claim 8, characterized in that: A number of springs (13) are evenly distributed on the inner wall of the fastening groove (9). One end surface of each spring (13) is in contact with the outer surface of the fixing ring (11). One end surface of the threaded nail (10) is in contact with the outer surface of the fixing ring (11).

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