A self-cleaning pulse bag filter

Abstract

This utility model relates to the technical field of baghouse dust collectors and discloses a self-cleaning pulse-jet baghouse dust collector, including a dust collector shell. A dust hopper is fixedly connected to the bottom of the dust collector shell. An air inlet pipe is connected to the left side of the dust hopper. An air guiding mechanism is provided inside the dust hopper. A buffer mechanism is provided in the upper middle part of the inner side of the dust collector shell. A dust removal mechanism is provided in the middle of the inner side of the dust collector shell, used to filter the gas entering the dust collector shell. A pulse mechanism is provided at the rear side of the dust collector shell, and an exhaust mechanism is provided on the right side of the dust collector shell. In this utility model, spiral guide vanes inside the air inlet pipe guide the airflow, ensuring it enters the filter bags evenly, reducing localized wear on the filter bags. During pulse cleaning, an electric actuator pushes a semi-conical dust baffle plate to adhere, forming a dust guide plate structure that blocks the air outlet of the air inlet pipe, preventing dust from back-blocking the air inlet pipe and ensuring stable operation of the dust collector.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to a self-cleaning pulse bag filter. Background Technology

[0002] Baghouse dust collectors, as an air purification device used in the industrial field, are used to capture and separate solid particulate matter from gases. Their working principle is that when dust-laden gas passes through the filter bags, the dust is trapped on the surface of the filter bags, and the purified gas is discharged through the filter bags, thereby effectively reducing the dust content in the air, achieving the effects of improving air quality, protecting the environment, and meeting the clean air requirements of industrial production.

[0003] Self-cleaning pulse jet baghouse dust collectors are an optimized and upgraded type of baghouse dust collectors. Based on traditional baghouse dust collectors, a pulse cleaning system is added. This system can periodically spray high-pressure gas into the filter bags, causing the filter bags to expand and contract instantly, shaking off the dust adhering to the surface of the filter bags, realizing automatic cleaning of the filter bags, ensuring the continuous and stable operation of the dust collector, effectively extending the service life of the filter bags, and reducing the workload and frequency of manual cleaning.

[0004] Traditional pulse jet baghouse dust collectors have pulse jet pipes arranged in a straight line with a fixed distance between the nozzle and the filter bag. This results in varying pulse jet intensity received by filter bags at different positions on the pipe, leading to uneven overall dust removal. To address this issue, existing technologies employ nozzles with adjustable angles and distances to ensure each filter bag receives a relatively uniform pulse jet intensity, guaranteeing overall dust removal uniformity. However, in actual use, when the airflow enters the dust collector through the inlet pipe, filter bags closer to the outlet are the first to come into contact with the high-speed airflow and experience greater impact, while filter bags farther from the outlet receive relatively weaker airflow. This uneven airflow impact exacerbates localized wear on the filter bags. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a self-cleaning pulse bag dust collector, which aims to improve the problem of uneven airflow impact in the prior art, which leads to increased local wear of the filter bag.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a self-cleaning pulse-jet bag filter, comprising a dust collector shell, a dust hopper fixedly connected to the bottom of the dust collector shell, an air inlet pipe connected to the left side of the dust hopper, an air guide mechanism provided inside the dust hopper, a buffer mechanism provided in the upper middle part of the inner side of the dust collector shell, a dust removal mechanism provided in the middle of the inner side of the dust collector shell, the dust removal mechanism being used to filter the gas entering the dust collector shell, a pulse mechanism provided at the rear side of the dust collector shell, and an exhaust mechanism provided on the right side of the dust collector shell; The air guiding mechanism includes a bearing ring, the outer wall of which is fixedly connected to the inner wall of the air inlet pipe. A rotating shaft is fixedly connected to the inner wall of the bearing ring. Spiral guide vanes are fixedly connected to the upper and lower sides of the outer wall of the rotating shaft. A dispersion hood is fixedly connected to the top of the air inlet pipe. Semi-conical dust baffles are provided on the left and right sides of the top of the dispersion hood. The front and rear sides of the two semi-conical dust baffles are slidably connected to the same H-shaped carriage. Electric push rods are fixedly connected to the left and right sides of the two semi-conical dust baffles. The far ends of the two electric push rods are respectively fixedly connected to the left and right sides of the inner wall of the ash hopper.

[0007] As a further description of the above technical solution: The buffer mechanism includes multiple fixed rings, which are equidistantly arranged on the upper inner side of the dust collector housing. Multiple guide rods are fixedly connected to the top of each fixed ring, and springs are slidably connected to the outer walls of each guide rod. Top plates are fixedly connected to the tops of each spring, and buffer blocks are fixedly connected to the tops of each top plate. Fixing components are provided on the tops of each fixed ring.

[0008] As a further description of the above technical solution: The dust removal mechanism includes a tube sheet, the outer wall of which is fixedly connected to the upper part of the inner wall of the dust collector shell. Multiple filter bags are equidistantly arranged on the inner wall of the tube sheet. The top of each filter bag is fixedly connected to an mounting ring. The outer walls of multiple guide rods are slidably connected to the inner walls of their respective mounting rings. The tops of multiple buffer blocks are respectively attached to the bottoms of their respective mounting rings.

[0009] As a further description of the above technical solution: The pulse mechanism includes two fixed frames. The front sides of the two fixed frames are respectively fixedly connected to the left and right rear ends of the dust collector shell. The top of each of the two fixed frames is fixedly connected to the same compressed air storage tank. The top of each compressed air storage tank is equidistantly connected to multiple pulse jet pipes. The top of each of the multiple filter bags is provided with a jet head. The top of each of the multiple jet heads is connected to the bottom of the corresponding pulse jet pipe.

[0010] As a further description of the above technical solution: The exhaust mechanism includes an exhaust pipe, the left side of which is connected to the top right side of the dust collector housing, the right end of which is connected to an air pump, and the top of the air pump is connected to an exhaust chimney.

[0011] As a further description of the above technical solution: The fixing component includes multiple screws, which are equidistantly arranged around the top of the corresponding fixing ring. The bottom ends of the multiple screws penetrate the top of the corresponding fixing ring and are threaded to the inner wall of the tube sheet. The outer walls of the multiple screws are slidably connected with washers, and the bottoms of the multiple washers are respectively in contact with the top of the corresponding fixing ring.

[0012] As a further description of the above technical solution: The inner walls of the multiple filter bags are fixedly connected with cage-type flexible frames, and the bottoms of the multiple cage-type flexible frames are fixedly connected with chassis.

[0013] As a further description of the above technical solution: Each of the multiple guide rods has a limiting block fixedly connected to its top end, and the bottom of each of the multiple limiting blocks is respectively attached to the top of the corresponding mounting ring.

[0014] This utility model has the following beneficial effects: 1. In this utility model, when the self-cleaning pulse bag dust collector is working, the spiral guide vanes in the inlet pipe guide the airflow so that it enters the filter bag evenly, reducing local wear of the filter bag. During pulse cleaning, the electric push rod pushes the semi-conical baffle plate to fit together, forming a ash guide plate, blocking the air outlet of the inlet pipe, guiding the dust into the ash hopper, and preventing dust from back-blocking the inlet pipe. After cleaning, the baffle plate separates, and the inlet pipe resumes air intake, realizing uniform airflow introduction and anti-blocking, ensuring stable and efficient operation of the dust collector.

[0015] 2. In this utility model, when the pulse mechanism starts cleaning, the compressed air sprayed at high speed onto the filter bag generates an impact. The vibration force of the filter bag is transmitted to the buffer block through the mounting ring, and then to the top plate, which compresses the spring. Under the constraint of the guide rod, the elastic deformation of the spring absorbs and buffers the impact force, ensuring the stability of the spring deformation direction and maintaining the smooth movement of the top plate. This provides reliable buffer protection for the filter bag, effectively extends the filter bag life, and ensures the stable operation of the dust collector. Attached Figure Description

[0016] Figure 1 This is a perspective view of a self-cleaning pulse-type bag filter proposed in this utility model; Figure 2 This is a front view of a self-cleaning pulse bag filter proposed in this utility model; Figure 3 This is a cross-sectional view of the ash hopper structure of a self-cleaning pulse bag filter proposed in this utility model; Figure 4 This is a schematic diagram of the air guide mechanism of a self-cleaning pulse bag filter proposed in this utility model; Figure 5 This is a schematic diagram of the dust removal mechanism of a self-cleaning pulse bag filter proposed in this utility model; Figure 6 This is a split view of the cage-type soft frame structure of a self-cleaning pulse bag dust collector proposed in this utility model. Figure 7 This is a structurally exploded view of the buffer mechanism of a self-cleaning pulse bag filter proposed in this utility model; Figure 8 This is a schematic diagram of the pulse mechanism structure of a self-cleaning pulse bag filter proposed in this utility model.

[0017] Legend: 1. Dust collector housing; 2. Air guide mechanism; 201. Bearing ring; 202. Rotating shaft; 203. Spiral guide vane; 204. Dispersion hood; 205. Semi-conical dust baffle; 206. H-shaped slide; 207. Electric actuator; 3. Buffer mechanism; 301. Fixing ring; 302. Guide rod; 303. Spring; 304. Top plate; 305. Buffer block; 306. Fixing assembly; 3061. Screw; 306 2. Gasket; 4. Dust hopper; 5. Air inlet pipe; 6. Dust removal mechanism; 601. Tube sheet; 602. Filter bag; 603. Mounting ring; 7. Pulse mechanism; 701. Fixing frame; 702. Compressed air storage tank; 703. Pulse jet pipe; 704. Pulse nozzle; 8. Exhaust mechanism; 801. Exhaust pipe; 802. Air pump; 803. Exhaust chimney; 9. Cage-type flexible frame; 10. Chassis; 11. Limiting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 , Figure 3 and Figure 4 The present invention provides an embodiment of a self-cleaning pulse-jet bag filter, comprising a dust collector housing 1, which serves as the main frame of the entire device and provides an installation base for other components. A dust hopper 4 is fixedly connected to the bottom of the dust collector housing 1. The dust hopper 4 is used to collect dust separated from the gas and serves to store the dust. An air inlet pipe 5 is connected to the left side of the dust hopper 4. The air inlet pipe 5 is the channel for the dust-laden gas to enter the dust collector and guides the dust-laden gas into the device. An air guide mechanism 2 is provided on the inner side of the dust hopper 4. The air guide mechanism 2 is used to adjust the direction and speed of the airflow entering the dust collector to make the airflow distribution more uniform. The air guide mechanism 2 includes a bearing ring 201, which is installed on the inner wall of the air intake pipe 5 and serves to support and position the rotating shaft 202. The outer wall of the bearing ring 201 is fixedly connected to the inner wall of the air intake pipe 5 to ensure a stable connection between the bearing ring 201 and the air intake pipe 5 and to ensure its normal function. The rotating shaft 202 is fixedly connected to the inner wall of the bearing ring 201. The rotating shaft 202 provides rotational support for the spiral guide vane 203, enabling it to rotate and guide the airflow. The upper and lower sides of the outer wall of the rotating shaft 202... All are fixedly connected with spiral guide vanes 203. Driven by the rotating shaft 202, the spiral guide vanes 203 rotate, guiding the airflow in the intake pipe 5 into a spiral upward direction, changing the airflow direction and reducing the airflow speed. A dispersion hood 204 is fixedly connected to the top of the intake pipe 5. The dispersion hood 204 further disperses the airflow guided by the spiral guide vanes 203, making the airflow more evenly diffused. Semi-conical dust baffles 205 are provided on the left and right sides of the top of the dispersion hood 204. The semi-conical dust baffles 205... During ash removal, the two semi-conical ash baffles 205 are positioned so that adjacent sides are joined together, forming a ash guide plate with a conical top, guiding the dust into the ash hopper 4. The front and rear sides of each semi-conical ash baffle 205 are slidably connected to the same H-shaped carriage 206. The H-shaped carriage 206 provides a sliding track for the semi-conical ash baffles 205, ensuring smooth movement. The left and right ends of the H-shaped carriage 206 are fixedly connected to the inner wall of the ash hopper 4. On the left and right sides, the H-shaped slide 206 is firmly installed in the ash hopper 4, providing stable support for the sliding of the semi-conical ash baffle 205. Electric push rods 207 are fixedly connected to the left and right sides of the two semi-conical ash baffles 205. The electric push rods 207 provide power for the movement of the semi-conical ash baffles 205 and control their opening and closing. The two electric push rods 207 are fixedly connected to the left and right sides of the inner wall of the ash hopper 4 at opposite ends, ensuring that the electric push rods 207 are firmly installed and can stably push the semi-conical ash baffles 205. Specifically, the bearing ring 201 securely connects the air inlet pipe 5 and the rotating shaft 202 to ensure structural stability. The spiral guide vane 203, driven by the rotating shaft 202, guides the airflow upward in a spiral shape, reducing speed and distributing it evenly, thus reducing uneven impact on the filter bag. The dispersion hood 204 further disperses the airflow and optimizes the distribution effect. The semi-conical dust baffle 205, the H-shaped slide 206, and the electric push rod 207 work together to prevent dust from back-blocking the air inlet pipe 5 during pulse cleaning, ensuring the continuous and stable operation of the dust collector.

[0020] Reference Figure 1 , Figure 5 and Figure 8The dust removal mechanism 6 includes a tube sheet 601, which serves to divide the internal space of the dust collector into upper and lower parts, providing a mounting base for the filter bags 602. The outer wall of the tube sheet 601 is fixedly connected to the upper part of the inner wall of the dust collector shell 1, ensuring that the tube sheet 601 is stably installed inside the dust collector shell 1 and will not shift during operation. Multiple filter bags 602 are equidistantly arranged on the inner wall of the tube sheet 601. The filter bags 602 are the core components of the dust removal system, used to filter dust particles in the dust-laden gas to achieve gas-dust separation. The tops of the multiple filter bags 602 are fixedly connected to mounting rings 603. The mounting ring 603 facilitates the connection of the filter bag 602 with other components, ensuring that the filter bag 602 is securely installed. The outer walls of multiple guide rods 302 are slidably connected to the inner walls of their respective mounting rings 603. The guide rods 302 guide the mounting rings 603 and allow the mounting rings 603 some room to move when the filter bag 602 is impacted, thus buffering the impact force. The tops of multiple buffer blocks 305 are respectively attached to the bottoms of their respective mounting rings 603. When the filter bag 602 is subjected to pulse impact force, the buffer blocks 305 can absorb and buffer part of the impact force, protecting the filter bag 602 from damage caused by excessive impact. The pulse mechanism 7 includes two fixed brackets 701, which support the compressed air storage tank 702, ensuring its secure installation on the rear side of the dust collector housing 1. The front sides of the two fixed brackets 701 are respectively fixedly connected to the left and right ends of the rear side of the dust collector housing 1, making the fixed brackets 701 tightly connected to the dust collector housing 1 and enhancing the overall structural stability. The same compressed air storage tank 702 is fixedly connected to the top of each of the two fixed brackets 701. The compressed air storage tank 702 stores compressed air, providing a power source for the pulse cleaning. The tops of the compressed air storage tanks 702 are evenly spaced. Multiple pulse jet pipes 703 are connected to each other. The pulse jet pipes 703 guide the compressed air in the compressed air storage tank 702 to the top of each filter bag 602. Each filter bag 602 is equipped with a blow nozzle 704 at the top. The blow nozzle 704 sprays the compressed air delivered by the pulse jet pipes 703 at high speed onto the filter bag 602, causing the filter bag 602 to expand and shake instantly, shaking off the dust attached to the surface. The top of each blow nozzle 704 is connected to the bottom of the corresponding pulse jet pipe 703 to ensure that the compressed air can be smoothly transmitted from the pulse jet pipe 703 to the blow nozzle 704. The exhaust mechanism 8 includes an exhaust pipe 801, which is the channel for the purified gas to exit the dust collector and guides the purified gas to the air pump 802. The left side of the exhaust pipe 801 is connected to the top right side of the dust collector housing 1, so that the purified gas can be smoothly discharged from the top right side of the dust collector. The right end of the exhaust pipe 801 is connected to the air pump 802, which provides power for the discharge of the purified gas and accelerates the gas discharge speed. The top of the air pump 802 is connected to the exhaust chimney 803, which discharges the purified gas pressurized by the air pump 802 into the atmosphere, and at the same time guides the direction and height of the discharged gas to a certain extent, reducing the impact on the surrounding environment. Specifically, the tube sheet 601 is fixed to the upper part of the inner wall of the dust collector shell 1, providing a stable installation base for multiple filter bags 602 to achieve efficient air-dust separation. The mounting ring 603 on the top of the filter bag 602 is slidably connected to the guide rod 302, and together with the buffer block 305, it effectively buffers the impact brought by the pulse mechanism 7 and extends the service life of the filter bag 602. Two fixing brackets 701 are fixed to the rear side of the dust collector shell 1 to support the compressed air storage tank 702. The filter bag 602 is cleaned by pulse jet cleaning through the pulse jet pipe 703 and the jet head 704. The exhaust pipe 801 of the exhaust mechanism 8 connects the dust collector shell 1 and the air pump 802. The air pump 802 provides power and the purified gas is discharged in an orderly manner through the exhaust chimney 803.

[0021] Reference Figure 2 , Figure 5 and Figure 7 The buffer mechanism 3 includes multiple fixing rings 301. These fixing rings 301 provide the mounting base and support structure for the entire buffer mechanism 3, ensuring the orderly installation of all components. The multiple fixing rings 301 are equidistantly arranged on the upper inner side of the dust collector housing 1. This layout allows the buffer mechanism 3 to evenly provide buffer protection for the filter bags 602 at different positions. Multiple guide rods 302 are fixedly connected to the top perimeter of each fixing ring 301. The guide rods 302 guide the movement of the spring 303 and subsequent components, ensuring the accuracy of their movement direction. Springs 303 are slidably connected to the outer wall of the guide rod 302. The springs 303 absorb and buffer external forces by their own elastic deformation, thus playing a buffering role. The top of the multiple springs 303 is fixedly connected to the top plate 304. The top plate 304 transmits the buffering force of the springs 303 to the buffer block 305 above and plays a role in dispersing the buffering force. The top of the multiple top plates 304 is fixedly connected to the top of the buffer block 305. The buffer block 305 directly contacts the filter bag 602 mounting ring 603, transmits the buffering force to the relevant components, and protects the filter bag from excessive impact force. Each of the multiple retaining rings 301 has a retaining component 306 at its top. The retaining component 306 is used to firmly connect the retaining rings 301 to other key components, enhancing the stability of the entire buffer mechanism 3. The retaining component 306 includes multiple screws 3061, which are key components for achieving the fixed connection. They provide fastening force through threaded connections. The multiple screws 3061 are equidistantly arranged around the top of the corresponding retaining rings 301. This equidistant distribution ensures that the retaining rings 301 are subjected to uniform force in all directions, guaranteeing the stability of the connection. The bottom ends of the multiple screws 3061 penetrate the corresponding retaining rings. The top of the ring 301 is threaded to the inner wall of the tube sheet 601, achieving a reliable connection between the fixed ring 301 and the tube sheet 601, ensuring a tight connection between the buffer mechanism 3 and the dust removal mechanism 6. The outer walls of multiple screws 3061 are slidably connected with washers 3062. The washers 3062 increase the friction between the screws 3061 and the fixed ring 301, preventing the screws 3061 from loosening, and at the same time dispersing the pressure of the screws 3061 on the fixed ring 301. The bottoms of the multiple washers 3062 are respectively attached to the tops of the corresponding fixed rings 301, so that the washers 3062 can effectively play their role in increasing friction and dispersing pressure. Specifically, multiple fixing rings 301 are equidistantly distributed inside the dust collector housing 1 to stably support and position the buffer assembly. The guide rod 302 guides the extension and retraction of the spring 303 to ensure the stability of the buffer direction. The elastic deformation of the spring 303 absorbs the pulse impact energy. The top plate 304 and the buffer block 305 transmit the buffering force to the installation position of the filter bag 602 to protect the filter bag 602. The fixing assembly 306 uses screws 3061 and washers 3062 to firmly connect the fixing rings 301 and the tube sheet 601, ensuring the overall stability of the buffer mechanism 3 and extending the service life of the filter bag 602.

[0022] Reference Figure 6 and Figure 7 Multiple filter bags 602 have cage-type soft skeletons 9 fixedly connected to their inner walls. The cage-type soft skeletons 9 provide an internal support structure for the filter bags 602, so that they can maintain their shape stability during the filtration process and are not easy to collapse. The bottom of multiple cage-type soft skeletons 9 is fixedly connected to a base plate 10. The base plate 10 further enhances the stability of the bottom of the cage-type soft skeletons 9, and also helps to guide the dust collected by the filter bags 602 to the dust hopper 4. The top of multiple guide rods 302 is fixedly connected to a limiting block 11. The limiting block 11 restricts the upward sliding distance of the mounting ring 603 along the guide rod 302, preventing the mounting ring 603 from detaching from the guide rod 302. The bottom of multiple limiting blocks 11 is respectively attached to the top of the corresponding mounting ring 603 to ensure that the limiting block 11 and the mounting ring 603 are in close contact. Specifically, the cage-type flexible skeleton 9 enhances the structural stability of the filter bag 602, prevents it from being excessively deformed, and ensures the filtration effect. The chassis 10 stabilizes the bottom of the cage-type flexible skeleton 9 and facilitates dust flow. The limiting block 11 cooperates with the guide rod 302 to restrict the sliding of the mounting ring 603, prevent the filter bag 602 from shifting, and ensure the stable operation of the dust collector.

[0023] Working Principle: When the self-cleaning pulse-jet bag filter is working, dust-laden gas enters through the inlet pipe 5. The bearing ring 201 on the inner wall of the inlet pipe 5 fixes the rotating shaft 202. The spiral guide vanes 203 on the upper and lower sides of its outer wall guide the airflow into a spiral shape, changing the airflow direction and reducing the airflow velocity, so that the airflow enters the dust collector more evenly, thereby making more even contact with each filter belt 602. This effectively solves the problem of uneven airflow in the inlet pipe 5 impacting the filter bag 602 in the existing technology, and avoids the problem of localized accelerated wear of the filter belt 602. As dust accumulates, the pulse mechanism 7 begins to operate. Two fixed brackets 701, fixed to the rear side of the dust collector housing 1, support the compressed air storage tank 702. When dust removal is required, the compressed air in the compressed air storage tank 702 is sprayed onto the filter bag 602 through the pulse jet pipe 703 and the jet nozzle 704, causing the filter bag 602 to expand instantly and shake off the dust. At this time, the electric actuator 207 starts to operate, pushing the two semi-conical dust baffles 205 to move towards each other along the front and rear sides of the H-shaped slide 206. The left and right ends of the H-shaped slide 206 are respectively fixed to the inner wall of the dust hopper 4. On the right side, a stable track is provided for the sliding of the semi-conical dust baffle 205. As the electric push rod 207 pushes, the two semi-conical dust baffles 205 gradually approach each other until they are completely attached. At this point, they together form a dust guide plate structure with a cone-shaped dust guiding structure at the top, which just covers the top air outlet of the air inlet pipe 5. Some of the dust will fall directly vertically into the dust hopper 4, while the other part of the dust will be guided along the cone-shaped dust guiding structure formed by the two semi-conical dust baffles 205 and fall into the dust hopper 4, preventing dust from falling from the filter bag 602 due to pulse cleaning. The dust that falls off the surface falls back into the inlet pipe 5, preventing blockage. After each pulse cleaning is completed, the electric push rod 207 moves in the opposite direction, causing the two semi-conical dust baffles 205 to separate along the H-shaped slide 206, reopening the top air outlet of the inlet pipe 5, restoring its normal air intake function, and not hindering the smooth entry of dust-laden gas into the dust collector, ensuring that the dust collector can operate continuously and stably, achieving uniform airflow introduction, reducing local wear of the filter bag 602, and effectively preventing dust from clogging the inlet pipe 5 during pulse cleaning, ensuring stable and efficient operation of the dust collector. Furthermore, when the pulse mechanism 7 starts the dust removal program, compressed air is sprayed at high speed from the compressed air storage tank 702 through the pulse jet pipe 703 and the jet head 704 onto the filter bag 602. When the filter bag 602 is subjected to pulse impact and generates vibration and impact force, it is transmitted to the buffer block 305 through the mounting ring 603. The buffer block 305 transmits the force to the top plate 304. The top plate 304 presses down on the spring 303. Under the constraint of the guide rod 302, the spring 303 undergoes elastic deformation, absorbing and buffering the huge force brought by the pulse impact. The guide rod 302 ensures that the deformation direction of the spring 303 is stable, while maintaining the stability of the up and down movement of the top plate 304, thereby providing reliable buffer protection for the filter bag 602, effectively extending the service life of the filter bag 602, and ensuring the stable operation of the dust collector.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning pulse baghouse filter comprising a filter housing (1), characterized in that: The bottom of the dust collector housing (1) is fixedly connected to a hopper (4), and the left side of the hopper (4) is connected to an air inlet pipe (5). An air guide mechanism (2) is provided on the inner side of the hopper (4). A buffer mechanism (3) is provided on the upper middle part of the inner side of the dust collector housing (1). A dust removal mechanism (6) is provided on the middle part of the inner side of the dust collector housing (1). The dust removal mechanism (6) is used to filter the gas entering the dust collector housing (1). A pulse mechanism (7) is provided on the rear side of the dust collector housing (1). An exhaust mechanism (8) is provided on the right side of the dust collector housing (1). The air guiding mechanism (2) includes a bearing ring (201), the outer wall of which is fixedly connected to the inner wall of the air inlet pipe (5), a rotating shaft (202) is fixedly connected to the inner wall of the bearing ring (201), and spiral guide vanes (203) are fixedly connected to the upper and lower sides of the outer wall of the rotating shaft (202). A dispersion cover (204) is fixedly connected to the top of the air inlet pipe (5), and a semi-conical dust baffle (205) is provided on the top left and right sides of the dispersion cover (204). The front and rear sides of the two semi-conical dust baffles (205) are slidably connected to the same H-shaped slide (206), and electric push rods (207) are fixedly connected to the left and right sides of the two semi-conical dust baffles (205). The two electric push rods (207) are respectively fixedly connected to the left and right sides of the inner wall of the ash hopper (4) at opposite ends.

2. A self-cleaning pulse-type cloth bag precipitator according to claim 1, characterized in that: The buffer mechanism (3) includes multiple fixed rings (301), which are equidistantly arranged on the upper inner side of the dust collector housing (1). Multiple guide rods (302) are fixedly connected to the top of each of the multiple fixed rings (301). Springs (303) are slidably connected to the outer walls of each of the multiple guide rods (302). Top plates (304) are fixedly connected to the tops of each of the multiple springs (303). Buffer blocks (305) are fixedly connected to the tops of each of the multiple top plates (304). Fixing components (306) are provided on the tops of each of the multiple fixed rings (301).

3. A self-cleaning pulse-jet baghouse according to claim 2, characterized in that: The dust removal mechanism (6) includes a tube sheet (601). The outer wall of the tube sheet (601) is fixedly connected to the upper part of the inner wall of the dust collector shell (1). Multiple filter bags (602) are equidistantly arranged on the inner wall of the tube sheet (601). The top of each filter bag (602) is fixedly connected to an mounting ring (603). The outer walls of multiple guide rods (302) are slidably connected to the inner walls of the corresponding mounting rings (603). The tops of multiple buffer blocks (305) are respectively attached to the bottoms of the corresponding mounting rings (603).

4. A self-cleaning pulse bag filter according to claim 3, characterized in that: The pulse mechanism (7) includes two fixed frames (701). The front sides of the two fixed frames (701) are fixedly connected to the left and right rear ends of the dust collector housing (1). The top of the two fixed frames (701) is fixedly connected to the same compressed air storage tank (702). The top of the compressed air storage tank (702) is equidistantly connected to multiple pulse jet pipes (703). The top of the multiple filter bags (602) is provided with a jet nozzle (704). The top of the multiple jet nozzles (704) is connected to the bottom of the corresponding pulse jet pipe (703).

5. A self-cleaning pulse-jet cloth bag filter according to claim 1, characterized in that: The exhaust mechanism (8) includes an exhaust pipe (801), the left side of which is connected to the top right side of the dust collector housing (1), the right end of which is connected to an air pump (802), and the top of which is connected to an exhaust chimney (803).

6. A self-cleaning pulse-jet cloth bag filter according to claim 2, characterized in that: The fixing component (306) includes a plurality of screws (3061), which are equidistantly arranged around the top of the corresponding fixing ring (301). The bottom ends of the plurality of screws (3061) penetrate the top of the corresponding fixing ring (301) and are threaded to the inner wall of the tube sheet (601). The outer walls of the plurality of screws (3061) are slidably connected with washers (3062), and the bottoms of the plurality of washers (3062) are respectively in contact with the top of the corresponding fixing ring (301).

7. A self-cleaning pulse bag filter according to claim 3, characterized in that: The inner walls of the multiple filter bags (602) are fixedly connected with cage-type soft skeletons (9), and the bottoms of the multiple cage-type soft skeletons (9) are fixedly connected with chassis (10).

8. A self-cleaning pulse-jet cloth bag filter according to claim 2, characterized in that: Each of the multiple guide rods (302) has a limiting block (11) fixedly connected to its top end, and the bottom of each of the multiple limiting blocks (11) is respectively attached to the top of the corresponding mounting ring (603).

Images