A dust removal and recovery equipment for traditional Chinese medicine granules production

Abstract

This application relates to the technical field of traditional Chinese medicine processing equipment, and discloses a dust removal and recovery device for the production of traditional Chinese medicine granules, including a dust removal body with an air inlet on its side surface. In this application, by installing a filter cartridge inside the exhaust pipe, during use, a cyclone first separates most of the large dust particles, and the remaining small portion of fine dust particles is filtered through the filter cartridge, achieving "coarse separation + fine filtration," greatly improving dust removal accuracy. Secondly, through the combined design of a backflush pipe, a pulse valve, and a counter-attack wheel, compressed air is supplied to the backflush pipe via a pulse backflush air source, and released through a pulse valve-controlled gap. This impacts the filter cartridge and simultaneously drives the counter-attack wheel to rotate, enhancing the vibration cleaning effect on the dust collected in the filter cartridge. Compared to traditional single pulse backflush, the dust removal effect is higher, effectively reducing filter cartridge clogging, maintaining stable dust removal efficiency, and extending the service life of the filter cartridge.

Description

Technical Field

[0001] This utility model relates to the technical field of traditional Chinese medicine processing equipment, and in particular to a dust removal and recovery device for the production of traditional Chinese medicine granules. Background Technology

[0002] In the industrial production of traditional Chinese medicine granules, with the strict implementation of the "Emission Standards for Air Pollutants from Pharmaceutical Industry" and the high requirements of GMP (Good Manufacturing Practice) for cleanrooms, efficient dust removal and material recovery have become key links to ensure production compliance and economy. The production of traditional Chinese medicine granules involves multiple processes such as crushing, mixing, and granulation, which generate a large amount of dust.

[0003] While cyclone dust collectors can efficiently separate large dust particles, their collection efficiency for fine dust particles smaller than 5μm is less than 60%, which cannot meet emission requirements. Although cartridge dust collectors can achieve submicron-level fine filtration, when directly handling high-concentration dust-laden gases, the stickiness and hygroscopicity of the herbal dust can easily cause rapid clogging of the cartridges, resulting in a cleaning cycle as short as 2-3 days, which seriously affects production continuity. Furthermore, frequent replacement of filter media leads to a surge in operating costs. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a dust removal and recycling device for the production of traditional Chinese medicine granules.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a dust removal and recovery device for the production of traditional Chinese medicine granules, comprising a dust removal body, an air inlet on the side surface of the dust removal body, and a dust discharge pipe installed through the lower surface of the dust removal body via a flange structure. An exhaust pipe is installed through the upper surface of the dust removal body, and a negative pressure fan is connected to one side of the exhaust pipe via a pipe. A plug is threadedly connected to the upper surface of the exhaust pipe, and a backflush pipe is installed on the plug via a sealed bearing. The backflush pipe is connected to the outlet of a pulse backflush air source via a hose, and a pulse valve is installed on the surface of the outlet. A frame is connected to the side surface of the backflush pipe via a connecting rod, and a sealing ring is embedded on the outer side of the frame. A filter cylinder is fitted on the outer side of the frame, and a counter-attack wheel is connected to the inner side of the frame via a rotating shaft.

[0006] By adopting the above technical solution, and installing a filter cartridge inside the exhaust pipe, during use, a cyclone first separates most of the large dust particles, while the remaining small portion of fine dust particles is filtered through the filter cartridge, achieving "coarse separation + fine filtration," which greatly improves the dust removal accuracy. Secondly, through the combined design of the backflush pipe, pulse valve, and impact wheel, compressed air is supplied to the backflush pipe through the pulse backflush air source, and the gap is released by the pulse valve, impacting the filter cartridge and driving the impact wheel to rotate, enhancing the vibration cleaning effect of the dust collected in the filter cartridge. Compared with the traditional single pulse backflush, the dust removal effect is higher, which can effectively reduce filter cartridge clogging, maintain stable dust removal efficiency, and extend the service life of the filter cartridge.

[0007] Furthermore, a through hole is provided on the side surface of the exhaust pipe, and a rhomboid column is welded at the through hole, with the upper and lower rhomboid columns installed in a staggered manner.

[0008] By adopting the above technical solution, the diamond-shaped columns on the side surface of the exhaust pipe are installed in a staggered manner, which can disrupt the airflow and make the airflow more evenly dispersed when passing through the exhaust pipe, ensuring uniform airflow of the filter cartridge unit and avoiding local filter cartridge blockage due to excessive load.

[0009] Furthermore, the surface of the filter cartridge is coated with a hydrophobic and oleophobic coating.

[0010] By adopting the above technical solutions, dust adhesion is reduced and the dust removal effect is improved.

[0011] Furthermore, the inner surface of the dust removal body is coated with a Teflon coating.

[0012] By adopting the above technical solutions, the probability of dust adhesion is reduced, and the frequency of manual cleaning is decreased.

[0013] Furthermore, the lower surface of the dust removal body is welded with legs, and the lower surface of the legs is adhered with anti-slip pads.

[0014] By adopting the above technical solution, the design of the support legs and anti-slip pads on the lower surface of the dust collector enhances the stability of the equipment placement and avoids displacement or tipping due to vibration during equipment operation.

[0015] Furthermore, the negative pressure fan has a built-in self-starting switch.

[0016] By adopting the above technical solution, the negative pressure fan can be started and stopped.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. In this application, by installing a filter cartridge inside the exhaust pipe, during use, a cyclone is used to first separate most of the large dust particles and impurities, and the remaining small part of fine dust particles is filtered through the filter cartridge, achieving "coarse separation + fine filtration", which greatly improves the dust removal accuracy. Secondly, through the combined design of the back-blowing pipe, pulse valve and impact wheel, compressed air is supplied to the back-blowing pipe through the pulse back-blowing air source, and the gap is released by the pulse valve to impact the filter cartridge and drive the impact wheel to rotate, which enhances the vibration cleaning effect of the dust collection of the filter cartridge. Compared with the traditional single pulse back-blowing, the dust removal effect is higher, which can effectively reduce filter cartridge clogging, maintain stable dust removal efficiency, and extend the service life of the filter cartridge.

[0019] 2. In this application, the diamond-shaped columns on the side surface of the exhaust pipe are installed in a staggered manner, which can disrupt the airflow and make the airflow more evenly dispersed when passing through the exhaust pipe, ensuring that the air volume of the filter cartridge unit is uniform and avoiding local filter cartridge blockage due to excessive load. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the dust removal body and its connection structure according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the skeleton and its connection structure of an embodiment of this utility model.

[0023] In the diagram: 1. Dust collector body; 2. Air inlet; 3. Exhaust pipe; 4. Ash discharge pipe; 5. Negative pressure fan; 6. Frame; 7. Sealing ring; 8. Filter cartridge; 9. Backflush pipe; 10. Connecting rod; 11. Pulse backflush air source; 12. Pulse valve; 13. Plug; 14. Impact wheel; 15. Diamond column; 16. Hydrophobic and oleophobic coating; 17. Teflon coating; 18. Automatic start switch. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] like Figure 1-3As shown in the embodiment of this application, a dust removal and recovery device for the production of traditional Chinese medicine granules is disclosed, including a dust removal body 1. An air inlet 2 is provided on the side surface of the dust removal body 1, and a dust discharge pipe 4 is installed through the lower surface of the dust removal body 1 via a flange structure. An exhaust pipe 3 is installed through the upper surface of the dust removal body 1. A negative pressure fan 5 is connected to one side of the exhaust pipe 3 via a pipe. A plug 13 is threadedly connected to the upper surface of the exhaust pipe 3. A backflush pipe 9 is installed on the plug 13 via a sealed bearing. The backflush pipe 9 is connected to the outlet of a pulse backflush air source 11 via a hose. A pulse valve 12 is installed on the surface of the outlet. A frame 6 is connected to the side surface of the backflush pipe 9 via a connecting rod 10. A sealing ring 7 is embedded on the outer side of the frame 6. A filter cartridge 8 is sleeved on the outer side of the frame 6. A counter-attack wheel 14 is connected to the inner side of the frame 6 via a rotating shaft.

[0026] Dust Collector Body 1: As the core frame of the equipment, the dust collector body 1 has an air inlet 2 on its side surface, which is sealed to the upstream production equipment through a pipeline to ensure the directional introduction of dust-laden gas. An exhaust pipe 3 is installed through the lower surface, with rubber sealing gaskets installed between the flanges and fastened with bolts for easy disassembly, cleaning, and dust recovery. An exhaust pipe 3 is also installed through the upper surface, and the airtightness is ensured by welding. The exhaust pipe 3 extends to the outside of the equipment, providing a channel for subsequent filtration by the filter cartridge 8 and gas discharge. The dust collector body 1 forms a cyclone dust collection space. After the dust-laden gas enters, centrifugal force is used to achieve the initial separation of large dust particles. The Teflon coating 17 inside, with its low surface energy characteristics, significantly reduces the probability of dust adhesion to the wall surface, reduces the frequency of manual cleaning, and maintains a stable airflow environment for cyclone separation, avoiding the impact of dust accumulation on the centrifugal separation effect.

[0027] The exhaust pipe 3 and the negative pressure fan 5 are connected by a pipe on the side surface of the exhaust pipe 3 to the negative pressure fan 5, using a quick-install clamp interface for easy disassembly and maintenance. The upper surface of the exhaust pipe 3 is connected to the plug 13 by a thread. A sealed bearing is installed between the plug 13 and the backflush pipe 9 to ensure that the backflush pipe 9 can rotate flexibly and to prevent gas leakage. The negative pressure fan 5 has a built-in self-starting switch 18, which is connected to the equipment control system through a line. It can automatically control the operation of the fan according to the start and stop signals of the production equipment or the pressure sensor data in the pipeline. The negative pressure fan 5 provides the suction force required for the system operation and forms a stable airflow channel. The exhaust pipe 3 serves as the gas transmission path.

[0028] Backflush pipe 9, pulse valve 12 and counter-attack wheel 14: Backflush pipe 9 is connected to pulse backflush air source 11 via a hose, and the hose is pressure resistant. Wear-resistant materials ensure stable compressed air transmission. The pulse valve 12 is installed at the outlet of the pulse backflush air source 11 via a threaded interface, which can precisely control the intermittent release of compressed air. The side surface of the backflush pipe 9 is rigidly connected to the frame 6 via the connecting rod 10. The frame 6 provides support for the filter cartridge 8. The sealing ring 7 embedded on its outer side fits tightly against the inner wall of the exhaust pipe 3 to prevent gas bypass. The inner side of the frame 6 is connected to the impact wheel 14 via a rotating shaft. Deep groove ball bearings are set at both ends of the rotating shaft to ensure that the impact wheel 14 rotates flexibly. The pulse backflush air source 11 provides high-pressure compressed air, which, controlled by the pulse valve 12, intermittently impacts the inside of the filter cartridge 8 to remove dust accumulated on the surface of the filter cartridge 8. The impact force generated by the backflush airflow drives the impact wheel 14 to rotate. Through centrifugal force and vibration, the cleaning effect on the dust accumulated on the inner wall of the filter cartridge 8 is further enhanced. Compared with the traditional single pulse backflush, this combined design significantly improves the dust removal efficiency, reduces the clogging of the filter cartridge 8, and maintains the long-term stable operation of the equipment.

[0029] Filter cartridge 8: It is fitted onto the outer side of the frame 6 and fixed with clamps to form a tight filtration space. As the core component of fine filtration, filter cartridge 8 receives the dust-laden gas after cyclone separation and efficiently intercepts the remaining fine dust particles, realizing a graded dust removal mode of "coarse separation + fine filtration" and greatly improving the dust removal accuracy.

[0030] The side surface of the exhaust pipe 3 has a through hole, and a rhomboid column 15 is welded at the through hole, with the upper and lower rhomboid columns 15 installed in a staggered manner.

[0031] Diamond-shaped columns 15: The staggered diamond-shaped columns 15 disrupt the airflow, ensuring that the dust-laden gas is evenly dispersed before entering the filter cartridge 8. This prevents localized overload of the filter cartridge 8 due to excessive airflow, ensuring balanced load across the filter cartridge 8 units and improving overall filtration efficiency.

[0032] The surface of the filter cartridge 8 is coated with a hydrophobic and oleophobic coating 16.

[0033] Hydrophobic and oleophobic coating 16: This coating is combined with the filter material through a thermal spraying process to ensure uniform adhesion of the coating without affecting the filtration performance. The hydrophobic and oleophobic coating 16 effectively reduces the adhesion of sticky components (such as polysaccharides and volatile oils) in Chinese medicine dust. Combined with the backflushing dust removal system, it improves the dust removal effect and extends the service life of the filter cartridge 8.

[0034] The inner surface of the dust collector body 1 is coated with a Teflon coating 17.

[0035] Teflon coating 17: With its low surface energy properties, it significantly reduces the probability of dust adhesion to the wall surface, reducing the frequency of manual cleaning, while maintaining a stable airflow environment for cyclone separation and preventing dust accumulation from affecting centrifugal separation performance.

[0036] The lower surface of the dust collector body 1 is welded with legs, and the lower surface of the legs is adhered with anti-slip pads.

[0037] Support legs and anti-slip mats: Support legs are welded to the lower surface of the dust collector body 1. The support legs and dust collector body 1 are fully welded to ensure strength. Anti-slip mats are adhered to the lower surface of the support legs and fixed by strong adhesive. The combination of support legs and anti-slip mats enhances the stability of the equipment placement and prevents the equipment from shifting or tipping over due to vibration during operation, thus ensuring production safety and normal equipment operation.

[0038] The negative pressure fan 5 comes with a self-starting switch 18.

[0039] Self-starting switch 18: The negative pressure fan 5 comes with a self-starting switch 18, which is connected to the equipment control system via a line. It can automatically control the operation of the fan based on the start / stop signal of the production equipment or the pressure sensor data in the pipeline.

[0040] The working principle of the dust collection and recovery equipment for the production of traditional Chinese medicine granules in this embodiment is as follows: When the production equipment generates dust-laden gas, the automatic start switch 18 of the negative pressure fan 5 automatically starts after receiving the start / stop signal of the production equipment, forming a negative pressure environment in the dust collection system. The dust-laden gas enters the dust collection body 1 at high speed along the tangential direction through the air inlet 2 on the side surface of the dust collection body 1 under the action of negative pressure, forming a spiral downward rotating airflow. Under the action of centrifugal force, larger dust particles are thrown towards the inner wall of the dust collection body 1, slide down the wall to the bottom, and are collected and discharged through the ash discharge pipe 4. The inner surface of the gas chamber is coated with a Teflon coating. Its low surface energy effectively reduces the adhesion between dust and the wall, making it easier for dust to slide off and preventing accumulation that could affect the cyclone separation effect. Fine dust particles continue to move upward with the gas and enter the exhaust pipe 3. After the dust-laden gas enters the exhaust pipe 3, the airflow is disrupted by the diamond-shaped pillars 15 installed at different angles on the side surface of the exhaust pipe 3. The originally concentrated airflow is evenly dispersed, preventing excessive local airflow velocity that could overload the filter cartridge 8. The evenly dispersed airflow carries the remaining fine dust particles into the filter cartridge 8 area. The filter cartridge 8 is fitted onto the outer surface of the frame 6, forming a tight filtration space. When the dust-laden airflow passes through the filter cartridge 8, the fine dust particles are intercepted by the filter material, while the clean gas is discharged through the filter cartridge 8, achieving a graded dust removal mode of "coarse separation + fine filtration," which significantly improves the dust removal accuracy. The hydrophobic and oleophobic coating 16 applied to the surface of the filter cartridge 8 effectively reduces the adhesion of sticky components such as polysaccharides and volatile oils in the herbal dust, reducing dust accumulation on the surface of the filter cartridge 8, improving filtration efficiency and extending the service life of the filter cartridge 8. As the filtration process continues, a large amount of dust gradually accumulates on the surface of the filter cartridge 8, leading to increased system resistance. At this point, the pulse backflushing air source 11 is activated, and compressed air is transmitted through a hose to the backflushing pipe 9, controlled intermittently by the pulse valve 12. When the pulse valve 12 opens, the high-pressure compressed air instantly impacts the inside of the filter cartridge 8, causing the filter cartridge 8 to expand and contract in pulses, prompting the dust on the surface of the filter cartridge 8 to fall off. Simultaneously, the impact force generated by the backflushing airflow drives the impact wheel 14 on the inner side of the frame 6 to rotate, impacting and vibrating the frame 6, further enhancing the cleaning effect on the dust accumulated on the inner wall of the filter cartridge 8. This dust removal method, combining pulse backflushing with the vibration of the impact wheel 14, significantly improves dust removal efficiency compared to traditional single pulse backflushing, effectively reducing filter cartridge 8 clogging and maintaining stable dust removal efficiency of the equipment.

[0041] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A dust collection and recovery device for the production of traditional Chinese medicine granules, comprising a dust collection body (1), characterized in that: The dust collector body (1) has an air inlet (2) on its side surface, and a dust discharge pipe (4) is installed through the lower surface of the dust collector body (1) via a flange structure. An exhaust pipe (3) is installed through the upper surface of the dust collector body (1). A negative pressure fan (5) is connected to one side of the exhaust pipe (3) via a pipe. A plug (13) is threaded onto the upper surface of the exhaust pipe (3). A backflush pipe (9) is installed on the plug (13) via a sealed bearing. The backflush pipe (9) is connected to the outlet of the pulse backflush air source (11) via a hose. A pulse valve (12) is installed on the surface of the outlet. A frame (6) is connected to the side surface of the backflush pipe (9) via a connecting rod (10). A sealing ring (7) is inlaid on the outer side of the frame (6). A filter cartridge (8) is fitted on the outer side of the frame (6). A counter-attack wheel (14) is connected to the inner side of the frame (6) via a rotating shaft.

2. The dust removal and recovery equipment for the production of traditional Chinese medicine granules according to claim 1, characterized in that: The exhaust pipe (3) has a through hole on its side surface, and a rhomboid column (15) is welded at the through hole. The rhomboid columns (15) are installed in a staggered manner above and below.

3. The dust removal and recovery equipment for the production of traditional Chinese medicine granules according to claim 2, characterized in that: The surface of the filter cartridge (8) is coated with a hydrophobic and oleophobic coating (16).

4. The dust removal and recovery equipment for the production of traditional Chinese medicine granules according to claim 3, characterized in that: The inner surface of the dust removal body (1) is coated with a Teflon coating (17).

5. The dust removal and recovery equipment for the production of traditional Chinese medicine granules according to claim 4, characterized in that: The lower surface of the dust removal body (1) is welded with legs, and the lower surface of the legs is adhered with anti-slip pads.

6. The dust removal and recovery equipment for the production of traditional Chinese medicine granules according to claim 5, characterized in that: The negative pressure fan (5) has a built-in self-starting switch (18).

Images