Explosion-proof type single-machine pulse dust collector for dust
By introducing explosion-proof components and a pulse cleaning system into a single-unit pulse dust collector, the problem of poor stability of traditional dust collectors in explosive environments is solved, achieving efficient dust explosion prevention and safe operation.
Patent Information
- Application Number
- CN202423247936.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional single-unit pulse dust collectors are prone to dust explosions in flammable and explosive dust environments, resulting in poor equipment stability, high operational risks, and difficulty in meeting the industry requirements with high explosion-proof requirements.
Explosion-proof components such as spark arresters, diffusers, temperature sensors, buzzers, and explosion relief valves are used, combined with a pulse dust removal system, to prevent explosions and equipment damage by eliminating sparks, ensuring uniform airflow, real-time monitoring, and automatic dust discharge.
It features a highly efficient explosion-proof design, preventing dust explosion accidents, protecting operator safety, reducing equipment damage and downtime risks, and providing convenient dust control effects.
Smart Images
Figure CN223760639U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulse dust collector technology, and in particular to a dust explosion-proof single-unit pulse dust collector. Background Technology
[0002] A single-unit pulse jet dust collector is a highly efficient dust removal device that separates dust from the air through pulse-jet cleaning. It is commonly used for flue gas purification and dust control in industrial production. Explosion-proof single-unit pulse jet dust collectors are based on ordinary equipment but incorporate explosion-proof design to prevent safety accidents caused by the accumulation of combustible dust or its mixing with air to form an explosive atmosphere. Its explosion-proof function is mainly achieved through the use of explosion-proof motors, explosion-proof sensors, and other key components, along with anti-static measures. It is suitable for flammable and explosive dust environments such as chemical, food processing, and pharmaceutical industries, effectively ensuring production safety and personnel health while complying with relevant regulations.
[0003] Traditional single-unit pulse jet dust collectors introduce dust-laden gas into the collector, where filter bags or cartridges separate the dust. Clean air is discharged through the exhaust port, while dust adheres to the filter media surface. Over time, dust gradually accumulates on the filter media. At this point, a pulse control system periodically activates compressed air to back-flush the filter media, blowing the accumulated dust into the dust collection box. Regular cleaning of the collection box is then required. This equipment has a simple structure and is easy to operate, making it suitable for small-scale dust control applications. However, regular maintenance of the filter bags and cleaning system is necessary to ensure efficient operation.
[0004] Traditional single-unit pulse dust collectors are prone to dust explosions due to dust leakage or airflow turbulence, making it difficult to meet the industry requirements for high explosion protection. This results in poor equipment stability and high operational risks in extreme environments. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a dust explosion-proof single-unit pulse dust collector, which aims to improve the problem that traditional single-unit pulse dust collectors are prone to dust explosions, making it difficult to meet the industry requirements for high explosion protection, and thus resulting in poor stability and high operating risk of the equipment in extreme environments.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a dust explosion-proof single-unit pulse dust collector, comprising a fixed frame, a filter cylinder fixedly connected to the inner wall of the fixed frame, a feeding funnel fixedly connected to the lower surface of the filter cylinder, a filter bag fixedly connected to the inner wall of the filter cylinder, a pulse assembly provided at the top of the filter cylinder for unloading dust from the filter bag, an exhaust pipe fixedly connected to the inside of the filter cylinder, an air inlet pipe fixedly connected to the inside of the feeding funnel, and an explosion-proof component provided on the outer wall of the air inlet pipe for preventing explosion inside the filter cylinder;
[0007] The explosion-proof component includes a spark arrester, one end of which is fixedly connected to one end of the air inlet pipe, and the other end of the air inlet pipe is fixedly connected to a diffuser. A temperature sensor is fixedly connected to the inner wall of the feeding funnel, a buzzer is fixedly connected to the upper surface of the filter cylinder, and an explosion relief valve is provided in the middle of the upper surface of the filter cylinder.
[0008] Furthermore, the pulse assembly includes a blow pipe, the outer wall of which is fixedly connected to the top of the filter cylinder, a solenoid valve is fixedly connected to one end of the blow pipe, a pulse valve is fixedly attached to the outer wall of the filter cylinder, a compressed air chamber is provided inside the pulse valve, the output end of the pulse valve is fixedly connected to the inside of the blow pipe, and multiple perforated plates are fixedly connected inside the blow pipe.
[0009] Furthermore, a dust collection box is fixedly connected to the bottom of the feeding funnel, a one-way valve is provided between the feeding funnel and the dust collection box, a material level sensor is provided on the upper inside of the dust collection box, a grounding wire is provided on the lower inside of the dust collection box, a second explosion relief valve is fixedly connected to the lower surface of the dust collection box, and a feeding assembly is provided on the lower surface of the dust collection box. The feeding assembly is used to collect and discharge dust.
[0010] Furthermore, the feeding assembly includes a discharge pipe, one end of which is fixedly connected to the lower surface of the dust collection box, and a rotary valve is fixedly connected inside the dust collection box.
[0011] Furthermore, the porous plate is disposed on the top of the filter bag, and the porous plate is used to drive pulsed air to clean the filter bag.
[0012] Furthermore, the second explosion relief valve is installed at one end of the discharge pipe, and the second explosion relief valve is used to prevent the explosion pressure from damaging the discharge pipe.
[0013] Furthermore, the diffuser is positioned below the filter bag, and the diffuser is used to disperse the air so that the air passes evenly through the filter bag, thus preventing dust from concentrating.
[0014] Furthermore, the exhaust pipe is located above the filter bag and is used to discharge the air after dust removal.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, air is first transported through the air inlet pipe. During this process, a spark arrester is used to eliminate sparks and prevent explosion. Then, a diffuser drives the air to pass evenly through the filter bag to prevent dust accumulation. In addition, a temperature sensor and a buzzer can be used to detect the internal temperature to further prevent explosion. Finally, a solenoid valve, compressed air tank, pulse valve, blow pipe and perforated plate blow the dust, so that the dust falls into the dust collection box through the discharge funnel for centralized storage. This solves the problem that dust collectors are prone to dust explosions, resulting in poor stability of the equipment in extreme environments and high operating risks. It achieves a highly efficient explosion-proof design, avoids dust explosion accidents, protects the lives of operators, and reduces the risk of equipment damage and downtime.
[0017] 2. In this utility model, firstly, when the dust is transported into the dust collection box, a one-way valve can be used to prevent the dust from flowing back. Then, a grounding wire is used to reduce static electricity inside the dust collection box to prevent explosion. Next, in conjunction with a material level sensor, a second explosion relief valve, a rotary valve, and a discharge pipe, the dust is automatically transported when it reaches a certain amount, achieving automatic centralized discharge. This avoids equipment failure or safety hazards caused by excessive dust accumulation, and further provides a more efficient and convenient dust control. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of a dust explosion-proof single-unit pulse dust collector proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the upper part of the feeding hopper of a dust explosion-proof single-unit pulse dust collector proposed in this utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of the filter cartridge of a dust explosion-proof single-unit pulse dust collector proposed in this utility model;
[0021] Figure 4 This is a schematic diagram of one side of the dust collection box structure of a dust explosion-proof single-unit pulse dust collector proposed in this utility model.
[0022] Legend:
[0023] 1. Fixed frame; 2. Filter cartridge; 3. Feed hopper; 4. Air inlet pipe; 5. Spark catcher; 6. Diffuser; 7. Compressed air tank; 8. Pulse pipe; 9. Solenoid valve; 10. Pulse valve; 11. Perforated plate; 12. Filter bag; 13. Buzzer; 14. Temperature sensor; 15. Exhaust pipe; 16. Explosion relief valve one; 17. Dust collection box; 18. Check valve; 19. Material level sensor; 20. Grounding wire; 21. Explosion relief valve two; 22. Rotary valve; 23. Discharge pipe. Detailed Implementation
[0024] 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.
[0025] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a dust explosion-proof single-unit pulse dust collector, including a fixed frame 1, a filter cylinder 2 fixedly connected to the inner wall of the fixed frame 1, a feeding funnel 3 fixedly connected to the lower surface of the filter cylinder 2, a filter bag 12 fixedly connected to the inner wall of the filter cylinder 2, the filter bag 12 being made of high-efficiency anti-static material to ensure higher safety when handling flammable dust, a pulse assembly being provided at the top of the filter cylinder 2, the pulse assembly being used to unload dust from the filter bag 12, the pulse assembly being able to efficiently remove dust from the filter bag 12 through high-speed compressed air jetting, thereby maintaining the dust removal efficiency of the equipment and the air permeability of the filter bag 12, an exhaust pipe 15 being fixedly connected inside the filter cylinder 2, an air inlet pipe 4 being fixedly connected inside the feeding funnel 3, an explosion-proof component being provided on the outer wall of the air inlet pipe 4, the explosion-proof component being used to prevent explosion inside the filter cylinder 2, and effectively improving the operational safety of the equipment by eliminating sparks or suppressing the propagation of explosion pressure;
[0026] The explosion-proof components include a spark arrester 5, one end of which is fixedly connected to one end of the air inlet pipe 4. The spark arrester 5 has a built-in high-efficiency spark blocking device that can quickly capture sparks before air enters the equipment, preventing them from entering the filter cartridge 2 and causing an explosion. The other end of the air inlet pipe 4 is fixedly connected to a diffuser 6, which can evenly disperse the incoming airflow, thereby preventing the airflow from causing concentrated impact on the filter bag 12 and improving the dust removal effect. A temperature sensor 14 is fixedly connected to the inner wall of the feeding funnel 3, which can monitor the temperature change inside the feeding funnel 3 in real time. A buzzer 13 is fixedly connected to the upper surface of the filter cartridge 2, which can issue an alarm signal when the temperature is abnormal or the equipment malfunctions, reminding the operator to take timely measures. An explosion relief valve 16 is set in the middle of the upper surface of the filter cartridge 2. The explosion relief valve 16 can... When the explosion pressure exceeds the limit, it opens quickly to release the excessive pressure and protect the equipment. The pulse assembly includes a blowpipe 8, the outer wall of which is fixedly connected to the top of the filter cylinder 2. One end of the blowpipe 8 is fixedly connected to a solenoid valve 9. The solenoid valve 9 can precisely adjust the pulse cleaning time and frequency by controlling the switch of compressed air. A pulse valve 10 is fixedly attached to the outer wall of the filter cylinder 2. The pulse valve 10 has a compressed air tank 7 inside. The compressed air tank 7 has a large capacity design and can provide a continuous and stable high-pressure airflow for cleaning. The output end of the pulse valve 10 is fixedly connected to the inside of the blowpipe 8. Multiple perforated plates 11 are fixedly connected inside the blowpipe 8. The distribution and pore size of the perforated plates 11 are optimized to evenly disperse the compressed air to the outer surface of the filter bag 12, ensuring the comprehensive cleaning of the filter bag 12.
[0027] Reference Figure 1 and Figure 4A dust collection box 17 is fixedly connected to the bottom of the feeding hopper 3. The dust collection box 17 adopts a reinforced structure to cope with possible dust impact and explosion pressure. A one-way valve 18 is set between the feeding hopper 3 and the dust collection box 17. The one-way valve 18 can prevent dust from flowing back to the filter cartridge 2, ensuring the continuity and stability of the dust removal process. A material level sensor 19 is set on the upper inside of the dust collection box 17, which can monitor the accumulation height of dust in the dust collection box 17 in real time and send a signal to trigger the discharge operation when the dust amount reaches the set value. A grounding wire 20 is set on the lower inside of the dust collection box 17. The grounding wire 20 is used to discharge static charge and effectively prevent static electricity accumulation from causing sparks or explosions. An explosion relief valve 21 is fixedly connected to the lower surface of the dust collection box 17. The explosion relief valve 21 is designed to quickly release explosion pressure and avoid structural damage to the dust collection box 17 and the discharge pipe 23 caused by the explosion. A feeding assembly is set on the lower surface of the dust collection box 17. The dust collection and discharge assembly includes a discharge pipe 23, one end of which is fixedly connected to the lower surface of the dust collection box 17. The discharge pipe 23 is made of wear-resistant material and can withstand the wear of dust for a long time. A rotary valve 22 is fixedly connected inside the dust collection box 17. The rotary valve 22 can evenly transport dust to the discharge pipe 23 to avoid dust accumulation and poor discharge. A perforated plate 11 is set on the top of the filter bag 12. The perforated plate 11 is used to drive pulse air to clean the filter bag 12. A second explosion relief valve 21 is set at one end of the discharge pipe 23 to prevent explosion pressure from damaging the discharge pipe 23. A diffuser 6 is set below the filter bag 12 to disperse the air so that the air passes evenly through the filter bag 12 to avoid dust concentration. An exhaust pipe 15 is set above the filter bag 12 to discharge the air after dust removal.
[0028] Working Principle: When using a dust explosion-proof single-unit pulse dust collector, firstly, connect the spark arrester 5 to the external pipeline, thus supplying air through the spark arrester 5 to the interior of the air inlet pipe 4. During this process, the spark arrester 5 eliminates sparks to prevent explosion. Next, the air is supplied through the air inlet pipe 4 to the interior of the diffuser 6, where it is dispersed, allowing the air to pass evenly through the filter bag 12 for dust removal, preventing dust accumulation. During this process, the temperature sensor 14 (model WRN-2E) continuously monitors the temperature inside the filter cartridge 2 and the discharge hopper 3. When the temperature reaches the preset temperature, the buzzer 13 automatically activates to sound an alarm, stopping operation to prevent explosion. Additionally, the solenoid valve 9 is activated to supply air to the pulse valve 10, which in turn supplies air to the pulse valve 12. Compressed air is supplied to the inside of the blowpipe 8 via the compressed air tank 7 and then to the inside of the perforated plate 11 via the blowpipe 8. This compressed air is then blown onto the outer wall of the filter bag 12 to clean the filter bag 12. The dust that is knocked off falls into the dust collection box 17 through the discharge funnel 3 and the one-way valve 18 for collection. The dust level sensor 19 then monitors the amount of dust inside the dust collection box 17 in real time. The model of the dust collection box 17 is UYB-EX. When the amount of dust reaches a certain level, the rotary valve 22 is activated to evenly transport the dust to the inside of the discharge pipe 23, thereby achieving discharge. During this process, the grounding wire 20 reduces the static electricity inside the dust collection box 17, thereby preventing an explosion inside the dust collection box 17. If the dust collection box 17 does explode, the explosion relief valve 21 can be used to prevent the explosion from affecting the discharge pipe 23.
[0029] 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 dust explosion-proof single-pulse dust collector, comprising a fixed frame (1), characterized in that: The inner wall of the fixed frame (1) is fixedly connected with a filter cylinder (2), the lower surface of the filter cylinder (2) is fixedly connected with a discharging hopper (3), the inner wall of the filter cylinder (2) is fixedly connected with a filter bag (12), the top of the filter cylinder (2) is provided with a pulse assembly, the pulse assembly is used for discharging dust on the filter bag (12), the inside of the filter cylinder (2) is fixedly connected with an exhaust pipe (15), the inside of the discharging hopper (3) is fixedly connected with an air inlet pipe (4), the outer wall of the air inlet pipe (4) is provided with an explosion-proof assembly, and the explosion-proof assembly is used for preventing explosion in the filter cylinder (2); The explosion-proof assembly comprises a spark arrester (5), one end of the spark arrester (5) is fixedly connected with one end of the air inlet pipe (4), the other end of the air inlet pipe (4) is fixedly connected with a diffuser (6), the inner wall of the discharging hopper (3) is fixedly connected with a temperature sensor (14), the upper surface of the filter cylinder (2) is fixedly connected with a buzzer (13), and the middle of the upper surface of the filter cylinder (2) is provided with a first explosion vent valve (16).
2. A dust explosion prevention type single machine pulse dust collector according to claim 1, characterized in that: The pulse assembly comprises a blowing pipe (8), the outer wall of the blowing pipe (8) is fixedly connected with the top of the filter cylinder (2), one end of the blowing pipe (8) is fixedly connected with a solenoid valve (9), the outer wall of the filter cylinder (2) is fixedly connected with a pulse valve (10), the inside of the pulse valve (10) is provided with a compressed air bag (7), the output end of the pulse valve (10) is fixedly connected with the inside of the blowing pipe (8), and the inside of the blowing pipe (8) is fixedly connected with a plurality of porous plates (11).
3. The dust explosion prevention type single-machine pulse dust collector according to claim 1, characterized in that: The bottom of the discharging hopper (3) is fixedly connected with a dust collecting box (17), a one-way valve (18) is arranged between the discharging hopper (3) and the dust collecting box (17), a material level sensor (19) is arranged on the inside of the dust collecting box (17), a grounding wire (20) is arranged on the inside of the dust collecting box (17), a second explosion vent valve (21) is fixedly connected to the lower surface of the dust collecting box (17), and a discharging assembly is arranged on the lower surface of the dust collecting box (17) and used for dust collection and discharge.
4. A dust explosion prevention type single machine pulse dust collector according to claim 3, characterized in that: The discharging assembly comprises a discharging pipe (23), one end of the discharging pipe (23) is fixedly connected with the lower surface of the dust collecting box (17), and the inside of the dust collecting box (17) is fixedly connected with a rotary valve (22).
5. A dust explosion prevention type single machine pulse dust collector according to claim 2, characterized in that: The porous plate (11) is arranged on the top of the filter bag (12) and is used for driving pulse air to clean the filter bag (12).
6. A dust explosion prevention type single machine pulse dust collector according to claim 4, characterized in that: The second explosion vent valve (21) is arranged at one end of the discharging pipe (23) and is used for preventing explosion gas pressure from damaging the discharging pipe (23).
7. A dust explosion prevention type single machine pulse dust collector according to claim 2, characterized in that: The diffuser (6) is arranged below the filter bag (12) and is used for dispersing air to make the air pass through the filter bag (12) uniformly, so that dust is not concentrated.
8. A dust explosion prevention type single machine pulse dust collector according to claim 2, characterized in that: The exhaust pipe (15) is arranged above the filter bag (12) and is used for discharging air after dust removal.