Anti-blocking and anti-explosion central dust collection system

Abstract

The utility model relates to the technical field of central dust collection, in particular to an anti-blocking and anti-explosion central dust collection system which comprises a rack and a funnel, the bottom of the funnel is fixedly connected with a switching funnel, the switching funnel is fixed at the top of a shearing module through bolts, and the bottom of the shearing module is fixedly provided with a discharging hopper through bolts. The bottom of the discharging hopper is fixedly connected with a vacuum discharging valve. And the shearing module comprises a motor, a rotating shaft, a shearing blade, a box body and a bottom plate, the box body is fixedly installed at the top of the bottom plate, a communicating discharging hopper is formed in the bottom of the box body and the bottom of the bottom plate, and the top of the box body communicates with a transfer funnel. The problem of blockage caused by metal wire winding is effectively solved, the oxygen concentration in the box body can be diluted, and explosion during metal wire shearing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of central dust collection technology, specifically to an anti-clogging and explosion-proof central dust collection system. Background Technology

[0002] A central dust collection system is a large-scale air purification system used in industrial or commercial environments to centrally collect, treat, and discharge pollutants such as dust, debris, and fumes. It uses a complete network of pipes, filtration devices, and power equipment to collect and treat pollutants from multiple dust-generating points. Widely used in industries such as machining, chemicals, pharmaceuticals, food processing, and electronics manufacturing, it is an important piece of equipment for improving the production environment, protecting occupational health, and meeting environmental protection requirements.

[0003] When handling dust containing metal filaments, existing central dust collectors are prone to clogging of their conical funnels due to the filaments becoming entangled. Traditional methods such as reverse-flushing or mechanical rapping are ineffective in addressing this clogging problem. Furthermore, using a pulverizer to handle the clogging could easily trigger a dust explosion, while vacuum conveying alone has limited effectiveness. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses an anti-clogging and explosion-proof central dust collection system. The technical solution adopted includes a frame and a funnel. The bottom of the funnel is fixedly connected to a transfer funnel, which is fixed to the top of the shearing module by bolts. The bottom of the shearing module is fixedly installed with a feeding hopper by bolts, and the bottom of the feeding hopper is fixedly connected to a vacuum feeding valve. The shearing module includes a motor, a rotating shaft, shearing blades, a housing, and a base plate. The housing is fixedly installed on the top of the base plate, and the bottom of the housing and the base plate have a passage connecting to the feeding hopper. The top of the chamber is connected to a transfer funnel. The opposite sides of the chamber are rotatably connected to the two ends of two rotating shafts. Several shearing blades are fixedly installed on each of the two rotating shafts. The shearing blades are staggered. There are two motors, which are fixedly installed on both sides of the top of the base plate. The output shafts of the two motors pass through through holes on the two ends of the chamber and are fixedly connected to one end of the two rotating shafts. The inner wall of the chamber has nozzles for spraying nitrogen. An oxygen concentration sensor and a temperature sensor are fixedly installed on the other inner wall of the chamber.

[0005] As a preferred embodiment of this utility model, a nitrogen chamber is provided inside the side wall of the box, the nitrogen chamber is connected to the spray hole, and a connector is fixedly installed on the side of the box, the connector being connected to the nitrogen chamber.

[0006] As a preferred technical solution of this utility model, the shredding part on the shredding blade is fixedly connected to a shearing blade, and the shearing blade is made of aluminum bronze or beryllium copper.

[0007] As a preferred embodiment of this utility model, two guide rails are fixedly installed on the frame, and four sliders are slidably installed on the two guide rails. The four sliders are respectively fixedly installed at the four corners of the bottom of the base plate.

[0008] As a preferred embodiment of this utility model, the transfer funnel has an upper round shape and a lower square shape, and the discharge hopper has an upper round shape and a lower square shape.

[0009] As a preferred embodiment of this utility model, the motor is provided, the output shaft of the motor passes through a through hole on the side of the housing and is fixedly connected to one end of a rotating shaft therein, and the other ends of the two rotating shafts pass through through holes on the inner side of the housing and are fixedly connected to the middle of the end faces of two gears respectively, and the two gears mesh with each other.

[0010] The beneficial effects of this utility model are as follows: 1. This utility model uses a motor-driven rotating shaft to enable staggered shearing blades to thoroughly shred materials, breaking larger materials into smaller particles. This effectively solves the clogging problem caused by tangled metal wires, ensuring the continuous and stable operation of the dust collection system, improving dust collection efficiency, reducing the number of downtime cleanings due to clogging, and lowering the company's operating costs. 2. Nitrogen gas can be introduced into the nitrogen chamber through the connector, allowing it to be sprayed from the nozzle into the chamber, diluting the oxygen concentration inside and preventing explosions during metal wire shearing. Simultaneously, oxygen concentration and temperature sensors installed inside the chamber monitor environmental parameters in real time. If abnormal oxygen concentration or temperature is detected, appropriate measures can be taken promptly, increasing the nitrogen injection rate. This proactive approach eliminates the risk of explosion, significantly improving safety compared to traditional passive explosion-proof methods.

[0011] 3. The shearing blades made of aluminum bronze and beryllium copper are explosion-proof materials, which do not easily generate sparks during friction with materials, further enhancing the explosion-proof performance of the system. Through the cooperation of guide rails and sliders, the base plate of the shearing module can slide on the guide rails. When a fault occurs inside the shearing module, the shearing module can be easily removed from the frame by sliding the base plate, which is convenient for maintenance personnel to inspect, repair and replace parts, greatly shortening maintenance time and improving the maintainability of the equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 ;

[0014] Figure 3 This is a schematic diagram of the shearing module structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the connection structure of the shearing module of this utility model;

[0016] Figure 5 This is a schematic diagram of the internal structure of the box body of this utility model;

[0017] Figure 6 This is a schematic diagram of the shearing blade structure of this utility model;

[0018] Figure 7 This is a schematic diagram of the single-motor structure of the shredding module of this utility model.

[0019] In the diagram: 1. Frame, 2. Funnel, 3. Transfer funnel, 4. Shredding module, 41. Motor, 42. Rotating shaft, 43. Shredding blade, 44. Housing, 45. Base plate, 5. Feed hopper, 6. Vacuum feeding valve, 7. Oxygen concentration sensor, 8. Temperature sensor, 9. Connector, 10. Nitrogen chamber, 11. Spray nozzle, 12. Shearing blade, 13. Guide rail, 14. Slider. Detailed Implementation

[0020] Example 1

[0021] like Figures 1 to 6 As shown, this utility model discloses an anti-clogging and explosion-proof central dust collection system. The technical solution adopted includes a frame 1 and a funnel 2. The bottom of the funnel 2 is fixedly connected to a transfer funnel 3. The transfer funnel 3 is fixed to the top of the shearing module 4 by bolts. The bottom of the shearing module 4 is fixedly installed with a feeding hopper 5 by bolts. The bottom of the feeding hopper 5 is fixedly connected to a vacuum feeding valve 6. The transfer funnel 3 has an upper round and lower bottom structure, and the feeding hopper 5 has an upper round and lower bottom structure.

[0022] The shredding module 4 includes a motor 41, a rotating shaft 42, shredding blades 43, a housing 44, and a base plate 45. The housing 44 is fixedly mounted on the top of the base plate 45. A through groove connecting the housing 44 and the bottom of the base plate 45 is provided, allowing access to the hopper 5. Two guide rails 13 are fixedly mounted on the frame 1, and four sliders 14 are slidably mounted on the guide rails 13. The four sliders 14 are fixedly mounted at the four corners of the bottom of the base plate 45. Through the cooperation of the guide rails 13 and the sliders 14, the base plate of the shredding module 4 can slide on the guide rails 13. When a fault occurs inside the shredding module 13, the shredding module 4 can be easily removed from the frame 1 by sliding the base plate 45, facilitating inspection and repair by maintenance personnel. The replacement of parts significantly shortens maintenance time and improves equipment maintainability. The top of the housing 44 is connected to the transfer funnel 3. The opposite sides inside the housing 44 are rotatably connected to the two ends of two rotating shafts 42. Several shearing blades 43 are fixedly installed on each of the two rotating shafts 42. The shearing blades 43 are staggered. The shearing parts on the shearing blades 43 are fixedly connected to shearing blades 12. The shearing blades 12 are made of aluminum bronze or beryllium copper. The shearing blades 12 made of aluminum bronze and beryllium copper are explosion-proof materials, which are not easy to generate sparks during friction with materials, further enhancing the explosion-proof performance of the system. There are two motors 41, which are fixedly installed on the top of the base plate 45. On both sides, the output shafts of two motors 41 pass through through holes on the sides of the housing 44 and are fixedly connected to one end of two rotating shafts 42. The inner wall of the housing 44 has nozzles 11 for spraying nitrogen gas. A nitrogen chamber 10 is provided inside the side wall of the housing 44, communicating with the nozzles 11. A connector 9 is fixedly installed on the side of the housing 44, communicating with the nitrogen chamber 10. Nitrogen gas can be introduced into the nitrogen chamber 10 through the connector 9, causing it to be sprayed from the nozzles 11 into the housing 44, diluting the oxygen concentration inside the housing 44 and preventing an explosion when cutting the metal wire. Simultaneously, an oxygen concentration sensor 7 and a temperature sensor 8 installed inside the housing can monitor environmental parameters in real time. Once an abnormal oxygen concentration or temperature is detected, corresponding measures can be taken in a timely manner to increase the nitrogen injection volume, eliminating the risk of explosion from a proactive prevention perspective. Compared with traditional passive explosion-proof methods, safety is significantly improved. An oxygen concentration sensor 7 and a temperature sensor 8 are fixedly installed on the other inner wall of the housing 44. The rotating shaft 42 is driven by the motor 41, which causes the staggered shearing blades 43 to fully shred the material. This can shred larger materials into smaller particles, effectively solving the blockage problem caused by metal wire entanglement, ensuring the continuous and stable operation of the dust collection system, improving dust collection efficiency, reducing the number of shutdowns for cleaning due to blockage, and reducing the company's operating costs.

[0023] Among them, such as Figure 7As shown, a motor 41 is provided. The output shaft of the motor 41 passes through a through hole on the side of the housing 44 and is fixedly connected to one end of a rotating shaft 42 therein. The other ends of the two rotating shafts 42 pass through through holes on the inner side of the housing 44 and are fixedly connected to the middle of the end faces of two gears 15 respectively. The two gears 15 mesh with each other. At this time, the output shaft of the motor 41 drives one of the rotating shafts 42 to rotate. This rotating shaft 42 drives one of the gears 15 to rotate. This gear 15 drives the other gear 15 to rotate synchronously in the opposite direction, so that the other gear 15 drives the other rotating shaft 42 to rotate in the opposite direction, causing the staggered shearing blades 43 to rotate in the opposite direction at high speed. The shearing blades 12 of the shearing part of the shearing blades 43 cut large pieces of materials such as metal wires into small particles, realizing the shearing and anti-clogging of a single motor.

[0024] The working principle of this invention is as follows: Dust containing metal wires falls from funnel 2 into transfer funnel 3, which has a round upper part and a square lower part to guide the material into the chamber 44. At this time, two motors 41 simultaneously drive two rotating shafts 42 to make the staggered shearing blades 43 rotate in opposite directions at high speed. The shearing blades 12 of the shearing part of the shearing blades 43 cut large pieces of material such as metal wires into small particles to prevent blockage. At the same time, nitrogen gas enters the nitrogen chamber 10 in the side wall of the chamber 44 through the connector 9, and is then sprayed out through the nozzle 11 to dilute the oxygen concentration in the chamber. The oxygen concentration sensor 7 and the temperature sensor 8 monitor the environmental parameters in real time to reduce the oxygen concentration in the chamber 44 to below 12%, thereby preventing dust explosion. When the temperature sensor 7 detects an abnormal oxygen concentration inside the chamber 44, it increases the nitrogen injection volume to prevent an explosion. When the temperature sensor 8 detects an abnormally high temperature inside the chamber 44, it can automatically shut down the system. The shredded material falls into the upper circular hopper 5 through the bottom opening of the chamber 44 and the bottom plate 45, and is then transported to the subsequent processing stage through the vacuum discharge valve 6. The vacuum discharge valve 6 achieves sealed material transport through rotor rotation. Its rotation speed is linked with the negative pressure of the vacuum pump to ensure uniform material discharge and maintain the system vacuum environment. The entire process achieves anti-blocking and explosion prevention through mechanical shredding, nitrogen inerting, explosion-proof materials, and intelligent monitoring. The bottom plate 45 is installed on the frame 1 through the guide rail 13 and the slider 14, which facilitates the overall removal and cleaning when the material is jammed.

[0025] It is worth noting that only the lower half of the frame 1 and funnel 2 in the attached drawings of this utility model are depicted. In actual use, the upper half of the funnel 2 is fixed to the frame 1 by bolts.

[0026] Components not described in detail in this article are existing technologies.

[0027] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A clog-proof and explosion-proof central dust collection system, characterized in that, Includes a frame (1) and a funnel (2). The bottom of the funnel (2) is fixedly connected to a transfer funnel (3). The transfer funnel (3) is fixed to the top of the shearing module (4) by bolts. The bottom of the shearing module (4) is fixedly installed with a feeding hopper (5) by bolts. The bottom of the feeding hopper (5) is fixedly connected to a vacuum feeding valve (6). The shearing module (4) includes a motor (41), a rotating shaft (42), shearing blades (43), a housing (44), and a base plate (45). The housing (44) is fixedly installed on the top of the base plate (45). The bottom of the housing (44) and the base plate (45) are provided with a through groove that connects to the feed hopper (5). The top of the housing (44) is connected to the transfer funnel (3). The opposite sides inside the housing (44) are rotatably connected to the two ends of the two rotating shafts (42). Several shearing blades are fixedly installed on each of the two rotating shafts (42). Shredder blades (43) are arranged in an alternating manner. There are two motors (41). The two motors (41) are fixedly installed on both sides of the top of the base plate (45). The output shafts of the two motors (41) pass through the through holes on the sides of both ends of the housing (44) and are fixedly connected to one end of the two rotating shafts (42). The inner wall of the housing (44) is provided with a nozzle (11) for spraying nitrogen gas. An oxygen concentration sensor (7) and a temperature sensor (8) are fixedly installed on the other inner wall of the housing (44).

2. The anti-clogging and explosion-proof central dust collection system according to claim 1, characterized in that: A nitrogen chamber (10) is provided inside the side wall of the housing (44), and the nitrogen chamber (10) is connected to the nozzle (11). A connector (9) is fixedly installed on the side of the housing (44), and the connector (9) is connected to the nitrogen chamber (10).

3. The anti-clogging and explosion-proof central dust collection system according to claim 1, characterized in that: The shredding part of the shredding blade (43) is fixedly connected to a shearing blade (12), which is made of aluminum bronze or beryllium copper.

4. The anti-clogging and explosion-proof central dust collection system according to claim 1, characterized in that: Two guide rails (13) are fixedly installed on the frame (1), and four sliders (14) are slidably installed on the two guide rails (13). The four sliders (14) are respectively fixedly installed at the four corners of the bottom of the base plate (45).

5. The anti-clogging and explosion-proof central dust collection system according to claim 1, characterized in that: The transfer funnel (3) has an upper circle and a lower circle structure, and the feeding hopper (5) has an upper circle and a lower circle structure.

6. The anti-clogging and explosion-proof central dust collection system according to claim 1, characterized in that: The motor (41) is provided, and the output shaft of the motor (41) passes through the through hole on the side of the housing (44) and is fixedly connected to one end of the rotating shaft (42) therein. The other ends of the two rotating shafts (42) pass through the through holes on the inner side of the housing (44) and are fixedly connected to the middle of the end face of the two gears (15) respectively. The two gears (15) mesh with each other.

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