Anti-explosion pulse cloth bag dust collector
Patent Information
- Application Number
- CN202522458672.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-20
AI Technical Summary
Existing baghouse dust collectors are prone to generating secondary dust during low-pressure pulse cleaning, and pose a risk of combustion or explosion when handling flammable and explosive dust.
Dust-prevention components, including rectangular corrugated pipes and adjustment mechanisms, are installed on the outside of the bag filter assembly. The expansion and repositioning of the rectangular corrugated pipes seal and guide the dust blown off the surface of the dust collector bag, preventing secondary dust generation inside the dust collector box and isolating flammable and explosive dust from the inner wall of the box to prevent friction or electrostatic sparks.
It effectively prevents secondary dust generation, reduces the risk of combustion or explosion, improves production safety, extends the service life of filter bags and equipment, and reduces maintenance costs.
Smart Images
Figure CN224925783U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bag filter technology, and in particular to an explosion-proof pulse bag filter. Background Technology
[0002] A baghouse dust collector is a highly efficient dust removal device that uses fiber fabric filter bags to separate solids from gas. Its basic principle is that when dust-laden gas passes through the filter bags, dust particles are trapped on the surface of the bags due to inertial collision, sieving, and electrostatic adsorption, while the purified gas passes through the filter bags into the exhaust system, thus achieving air purification.
[0003] In the existing field of industrial dust control, baghouse dust collectors are widely used due to their high dust removal efficiency and strong adaptability. However, during the use of existing baghouse dust collectors, the lack of effective safety protection structures on the outside of the filter bags means that when dust adhering to the outer surface of the bags is detached during low-pressure pulse cleaning, it often creates secondary dust inside the dust collector. This dust not only easily adheres to the inner wall of the dust collection box, affecting the cleanliness and operating efficiency of the equipment, but also takes a long time to settle into the ash hopper. Especially when dealing with flammable and explosive dust, the dust detached during backflushing can generate static sparks through friction or contact with the inner wall of the dust collection box, which can easily cause combustion or even explosion accidents, seriously threatening production safety and the stable operation of the equipment.
[0004] Therefore, there is an urgent need to develop an explosion-proof pulse jet baghouse dust collector that can effectively reduce secondary dust generation and improve dust collection safety, in order to address the shortcomings of existing technologies. Based on this, we propose an explosion-proof pulse jet baghouse dust collector. Utility Model Content
[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0006] Therefore, the purpose of this utility model is to provide an explosion-proof pulse bag filter, which can solve the problems of existing bag filters that are prone to secondary dust generation during low-pressure pulse cleaning, have low dust settling efficiency, and pose combustion or explosion safety hazards when handling flammable and explosive dust.
[0007] To solve the above-mentioned technical problems, this utility model provides an explosion-proof pulse bag dust collector, which adopts the following technical solution: it includes a dust collection box, inside which a bag filter assembly is installed, and a dust prevention component is connected to the middle of the bag filter assembly. The dust prevention component includes a first connecting frame, a second connecting frame is provided at the bottom of the first connecting frame, a rectangular corrugated pipe is installed between the second connecting frame and the first connecting frame, an adjusting screw is threaded to one corner of the second connecting frame, and a drive motor is installed at one corner of the first connecting frame. The output end of the drive motor is connected to the adjusting screw by a transmission connection.
[0008] Optionally, the bag filter assembly includes a lifting plate, with multiple sets of dust collection bags at the bottom of the lifting plate, and a third connecting frame at the bottom of the lifting plate. One corner of the third connecting frame is connected to an adjusting screw via a bearing. Guide rods are connected between the triangle of the lifting plate and the third connecting frame, and a chip discharge port is also provided in the middle of the third connecting frame.
[0009] Optionally, both the first and second connecting frames have wire holes in their triangles, and the bottom of the second connecting frame is also provided with a dust discharge channel.
[0010] Optionally, the wire hole and the guide rod are in a sliding fit, and the ash discharge channel and the chip discharge port are in a plug-in fit.
[0011] Optionally, the dust collector has recessed grooves at both ends, a pulse cleaner is installed on the top of the dust collector, and a ash hopper is connected to the bottom of the dust collector. A recessed plate is connected to one end of the pulse cleaner and the ash hopper. A limit groove is also provided on the inner side of the ash hopper near the recessed plate.
[0012] Optionally, the recessed panel and the recessed slot are snap-fitted together, and the recessed panel and the third connecting frame are transition-fitted together.
[0013] In summary, this utility model has at least one of the following beneficial effects: The explosion-proof pulse bag dust collector designed in this scheme, by setting dust-proof components on the outside of the bag filter assembly and utilizing the synergistic effect of the rectangular corrugated pipe and the adjustment mechanism, can seal and guide the dust blown off the surface of the dust collector bag during the pulse cleaning process, preventing secondary dust generation inside the dust collector box and avoiding dust adhering to the inner wall of the dust collector box; through the expansion and resetting of the rectangular corrugated pipe in conjunction with the adjustment mechanism, it can also isolate the blown dust from the inner wall of the dust collector box when handling flammable and explosive dust, avoiding friction or contact with electrostatic sparks between the dust and the inner wall of the box, thereby significantly reducing the risk of combustion or explosion, improving production safety, and realizing convenient maintenance, extended service life of filter bags and equipment, and reduced operation and maintenance costs. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the disassembled dust collection box of this utility model; Figure 3 This is a schematic diagram of the dust-proof component structure of this utility model; Figure 4 This is a schematic diagram of the structure of the bag filter assembly of this utility model.
[0016] Explanation of reference numerals in the attached drawings: 1. Dust collector box; 2. Bag filter assembly; 3. Dust-proof component; 4. First connecting frame; 5. Second connecting frame; 6. Rectangular corrugated pipe; 7. Adjusting screw; 8. Drive motor; 9. Lifting plate; 10. Dust collector bag; 11. Third connecting frame; 12. Guide rod; 13. Chip discharge port; 14. Wire hole; 15. Ash discharge channel; 16. U-shaped inner groove; 17. Pulse cleaner; 18. Ash hopper; 19. U-shaped inner plate; 20. Limiting groove. Detailed Implementation
[0017] 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.
[0018] Example: Refer to Figures 1 to 4 This utility model provides an embodiment of an explosion-proof pulse bag filter dust collector, including a dust collection box 1. A bag filter assembly 2 is installed inside the dust collection box 1. A dust-prevention component 3 is connected to the middle of the bag filter assembly 2. The dust-prevention component 3 includes a first connecting frame 4, a second connecting frame 5 at the bottom of the first connecting frame 4, and a rectangular corrugated pipe 6 installed between the second connecting frame 5 and the first connecting frame 4. An adjusting screw 7 is threadedly connected to one corner of the second connecting frame 5, and a drive motor 8 is installed at one corner of the first connecting frame 4. The output end of the drive motor 8 is connected to the adjusting screw 7 via a transmission connection. This bag filter dust collector utilizes the adjusting screw 7 and the drive motor 8... The guide rod 12 and wire hole 14 work together to drive the adjusting screw 7 connected to the output end to rotate in the forward and reverse directions when the drive motor 8 is powered on. This allows for the raising and lowering adjustment of the rectangular corrugated pipe 6 connected to the bottom of the first connecting frame 4 and the second connecting frame 5 in the middle of the dustproof component 3. The lowering adjustment of the second connecting frame 5 can unfold the rectangular corrugated pipe 6, which has an elastic telescopic structure design. The unfolded rectangular corrugated pipe 6 can cover and seal the exposed dust collector bag 10, preventing dust blown off the surface of the dust collector bag 10 from being stirred up inside the dust collector box 1, and also preventing the blown dust from adhering to the inner wall of the dust collector box 1.
[0019] The bag filter assembly 2 includes a lifting plate 9. Multiple sets of dust collector bags 10 are installed at the bottom of the lifting plate 9. A third connecting frame 11 is installed at the bottom of the lifting plate 9. One corner of the third connecting frame 11 is connected to an adjusting screw 7 via a bearing. Guide rods 12 are connected between the triangular part of the lifting plate 9 and the third connecting frame 11. A chip discharge port 13 is also provided in the middle of the third connecting frame 11. By adding the third connecting frame 11 and guide rods 12 to the bottom of the lifting plate 9, the lifting plate 9 with the dust collector bags 10 installed at the bottom can be reliably supported and fixed between the dust collector box 1 and the ash discharge hopper 18. Wire holes 14 are provided in the triangular parts of the first connecting frame 4 and the second connecting frame 5. A ash discharge channel 15 is also provided at the bottom of the second connecting frame 5. By providing the ash discharge channel 15 at the bottom of the second connecting frame 5, the dust collector bags 10 can be discharged smoothly. Dust blown off the surface of the dust collector bag 10 is smoothly discharged into the dust discharge hopper 18, preventing dust from accumulating or clogging at the bottom of the frame, thus achieving efficient dust collection and discharge. The wire hole 14 and the guide rod 12 are in sliding fit, while the dust discharge channel 15 and the chip discharge port 13 are in plug-in fit. Through the sliding fit between the wire hole 14 and the guide rod 12, when the adjusting screw 7 moves the second connecting frame 5 up and down, it is ensured that it is smoothly guided along the guide rod 12, preventing the frame from shifting or shaking during operation, thereby improving the adjustment accuracy and stability of the dust-proof component 3. Through the plug-in fit between the dust discharge channel 15 and the chip discharge port 13, the dust blown off the surface of the dust collector bag 10 can be smoothly guided into the dust discharge hopper 18, preventing dust from leaking or accumulating at the connection, thus achieving efficient dust collection and discharge, and improving the overall dust removal effect and operational reliability of the equipment.
[0020] The dust collector 1 has recessed grooves 16 at both ends. A pulse jet cleaner 17 is installed on the top of the dust collector 1, and a ash hopper 18 is connected to the bottom of the dust collector 1. A recessed plate 19 is connected to one end of the pulse jet cleaner 17 and the ash hopper 18. A limiting groove 20 is also provided on the inner side of the ash hopper 18 near the recessed plate 19. By opening recessed grooves 16 at both ends of the dust collector 1, installing a pulse jet cleaner 17 at the top, connecting the ash hopper 18 to the bottom, and connecting a recessed plate 19 to one end of the pulse jet cleaner 17 and the ash hopper 18, and by providing a limiting groove 20 on the inner side of the ash hopper 18 near the recessed plate 19, the dust collector 1 achieves its function. The side-mounted limiting groove 20 allows the pulse jet cleaner 17 and the ash discharge hopper 18 to be stably positioned during installation, further improving the sealing and connection stability between them and the dust collector 1. The U-shaped inner plate 19 and the U-shaped inner groove 16 are snap-fitted together, and the U-shaped inner plate 19 and the third connecting frame 11 are transition fits together. Through the structural design of the transition fit between the U-shaped inner plate 19 and the third connecting frame 11, the bag filter assembly 2, which is equipped with dust prevention components 3, can be stably supported and fixed between the dust collector 1 and the ash discharge hopper 18, achieving reliable installation of the bag filter assembly 2 and improving the dust prevention effect.
[0021] Working Principle: The explosion-proof pulse bag dust collector designed in this scheme mainly consists of a dust collection box 1, a pulse cleaner 17, a dust discharge hopper 18, a bag filter assembly 2, and a dust prevention component 3. The dust prevention component 3 includes a first connecting frame 4, a second connecting frame 5, a rectangular corrugated pipe 6, an adjusting screw 7, a drive motor 8, and other components. When the pulse cleaner 17 cleans the dust adhering to the surface of the dust collector bag 10, the first connecting frame 4 is first fixed to the bottom of the lifting plate 9 using bolts and other fasteners. Then, with the help of… The adjustment screw 7, drive motor 8, guide rod 12, and wire hole 14 work together to drive the adjustment screw 7 to rotate in the forward or reverse direction when the drive motor 8 is powered on. Since the adjustment screw 7 is threaded to one corner of the second connecting frame 5 and the wire hole 14 is slidingly fitted to the guide rod 12, the adjustment screw 7, which is driven to rotate in the forward direction by the drive motor 8, can adjust the downward movement of the rectangular bellows 6 connected to the bottom of the first connecting frame 4 and the second connecting frame 5.
[0022] By adjusting the descent, the second connecting frame 5 drives the rectangular corrugated tube 6, which has an elastic telescopic structure, to unfold, thereby covering and sealing the exposed dust collector bag 10. This covering structure not only effectively prevents dust blown off the surface of the dust collector bag 10 from forming dust inside the dust collector box 1, but also prevents dust from adhering to the inner wall of the dust collector box 1. At the same time, for dust with flammable and explosive properties, this structure design can prevent it from rubbing or contacting the inner wall of the dust collector box 1 to generate electrostatic sparks, thereby reducing the risk of combustion or explosion accidents. Correspondingly, after the bag filter has completed the dust removal treatment of industrial production waste gas, the rectangular corrugated tube 6 that has been unfolded on the outside of the dust collector bag 10 can be reset and stored by simply driving the adjusting screw 7 at the output end of the drive motor 8 to rotate in the opposite direction.
[0023] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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. An explosion-proof pulse bag filter, comprising a dust collection box (1), characterized in that: The dust collection box (1) is equipped with a bag filter assembly (2). A dust prevention component (3) is connected to the middle of the bag filter assembly (2). The dust prevention component (3) includes a first connecting frame (4). A second connecting frame (5) is provided at the bottom of the first connecting frame (4). A rectangular corrugated pipe (6) is installed between the second connecting frame (5) and the first connecting frame (4). An adjusting screw (7) is threaded to one corner of the second connecting frame (5). A drive motor (8) is installed to one corner of the first connecting frame (4). The output end of the drive motor (8) is connected to the adjusting screw (7) by transmission.
2. The explosion-proof pulse bag filter according to claim 1, characterized in that: The bag filter assembly (2) includes a lifting plate (9), with multiple sets of dust collection bags (10) at the bottom of the lifting plate (9). A third connecting frame (11) is provided at the bottom of the lifting plate (9). One corner of the third connecting frame (11) is connected to the adjusting screw (7) through a bearing. Guide rods (12) are connected between the triangle of the lifting plate (9) and the third connecting frame (11). A chip discharge port (13) is also provided in the middle of the third connecting frame (11).
3. The explosion-proof pulse bag filter according to claim 2, characterized in that: Both the first connecting frame (4) and the second connecting frame (5) have wire holes (14) in their triangles, and the bottom of the second connecting frame (5) is also provided with a dust discharge channel (15).
4. The explosion-proof pulse bag filter according to claim 3, characterized in that: The wire hole (14) and the guide rod (12) are in sliding fit, and the ash discharge channel (15) and the chip discharge port (13) are in plug fit.
5. The explosion-proof pulse bag filter according to claim 4, characterized in that: The dust collector (1) has a U-shaped inner groove (16) on both sides. A pulse cleaner (17) is installed on the top of the dust collector (1). A ash discharge hopper (18) is connected to the bottom of the dust collector (1). A U-shaped inner plate (19) is connected to one end of the pulse cleaner (17) and the ash discharge hopper (18). A limit groove (20) is also opened on the inner side of the ash discharge hopper (18) near the U-shaped inner plate (19).
6. The explosion-proof pulse bag filter according to claim 5, characterized in that: The recessed panel (19) and the recessed groove (16) are in a snap-fit fit, and the recessed panel (19) and the third connecting frame (11) are in a transition fit.