A hierarchical purification dry filtration dust removal system

Abstract

The application discloses a kind of hierarchical purification dry type filtration dust removal systems, including main control box and unloading ash belt, unloading ash belt end is equipped with dust collecting bin, dust collecting bin is connected with the unloading ash device of unloading ash belt drive connection, unloading ash belt top is equipped with primary dust removal module, secondary dust removal module, tertiary high-efficiency dust removal module, spray module in sequence;Primary dust removal module and secondary dust removal module below are equipped with gravity unloading ash plate equipped with gravity sensor;Primary dust removal module includes filter screen and blowback ash cleaning device;Secondary dust removal module includes filter plate and pulse ash cleaning device, filter plate is equipped with drainage plate, drainage plate surface is equipped with air hole, drainage plate is equipped with reverse blowing device connected with pulse ash cleaning device in;Tertiary high-efficiency dust removal module includes filter cartridge and spherical intelligent pulse ash cleaning device.The application can greatly reduce the concentration of dust in airflow, improve dust removal efficiency, ash cleaning efficiency and the service life of filter equipment.

Description

Technical Field

[0001] This invention belongs to the field of industrial dust removal technology, specifically relating to a graded purification dry filtration dust removal system. Background Technology

[0002] In industrial and mining enterprises, large amounts of dust are released into the air during production processes, severely impacting air quality. High concentrations of dust not only harm the health of workers, causing occupational health problems such as respiratory illnesses, but can also damage production equipment, shorten its lifespan, increase maintenance costs, and even disrupt normal production. Traditional dust collection equipment often suffers from low dust collection efficiency, incomplete dust removal, and difficulty in unloading ash. A single dust collection method is insufficient to handle the complex conditions of dust with varying particle sizes, leading to excessive dust emissions. Furthermore, inefficient dust removal processes can cause dust to accumulate on the outer surface of filter components, increasing filtration resistance and affecting the overall performance of the dust collection equipment. Improperly designed ash unloading processes can easily lead to dust leakage, causing further environmental pollution and increasing the workload and labor intensity of manual cleaning. Summary of the Invention

[0003] The purpose of this invention is to provide a graded purification dry filtration dust removal system that can greatly reduce the concentration of dust in the airflow, improve dust removal efficiency, ash removal efficiency, and the service life of the filtration equipment.

[0004] To achieve the above objectives, the present invention provides a graded purification dry filtration dust removal system, including a main control box and a dust discharge belt. A dust collection bin is provided at the end of the dust discharge belt, and a dust discharge device connected to the dust discharge belt is connected to the dust collection bin. A primary dust removal module, a secondary medium-efficiency dust removal module, a tertiary high-efficiency dust removal module, and a spray module are sequentially arranged above the dust discharge belt along the conveying direction of the dust discharge belt. An air inlet is connected to the front end of the primary dust removal module, and an air outlet is connected to the rear end of the spray module.

[0005] Gravity-loaded dust removal plates equipped with gravity sensors are installed below the primary dust removal module and the secondary medium-efficiency dust removal module.

[0006] The primary dust removal module includes a filter screen and a back-blowing cleaning device located behind the filter screen;

[0007] The secondary medium-efficiency dust removal module includes a filter plate and a pulse cleaning device. The filter plate is equipped with a flow guide plate, and the surface of the flow guide plate is provided with dense air vents. A reverse jet cleaning device connected to the pulse cleaning device is installed inside the flow guide plate.

[0008] The three-stage high-efficiency dust removal module includes a filter cartridge and a spherical intelligent pulse cleaning device that works in conjunction with the filter cartridge cleaning.

[0009] The pore size on the filter screen, filter plate, and filter cylinder decreases in that order.

[0010] The main control box connects and controls the ash discharge belt, gravity ash discharge plate, reverse air cleaning device, pulse cleaning device, spherical intelligent pulse cleaning device and spray module.

[0011] As a further aspect of the present invention: a gap is left between the flow guide plate and the filter plate; the reverse jet blowing device is provided with a built-in nozzle and a jet blowing hole on its surface, and the built-in nozzle is connected to the pulse cleaning device through a jet blowing pipe.

[0012] As a further aspect of the present invention: the spherical pulse cleaning device includes a control valve and an air tank connected thereto. Several horizontally arranged air guide rods are connected to the control valve, and several vertically arranged telescopic rods are connected to the air guide rods. A spherical nozzle is connected to the end of the telescopic rod, and the spherical nozzle is provided with small spray holes.

[0013] As a further aspect of the present invention: the spray module is provided with a spray device, which includes a support rod and a nozzle mounted on the support rod that can spray out dust binder.

[0014] As a further aspect of the present invention: the ash unloading device includes a roller and several scrapers, the scrapers are evenly spaced on the roller, adjacent scrapers are in a V-shape, the end of the roller is connected to the ash unloading belt through a gear assembly, and the roller and the ash unloading belt rotate in the same direction.

[0015] As a further aspect of the present invention: the scraper is made of a flexible material, and the end of the scraper away from the roller is in contact with the surface of the ash removal belt.

[0016] As a further aspect of the present invention, the secondary medium-efficiency dust removal module and the tertiary high-efficiency dust removal module are separated by a partition through which airflow passes.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] By working in tandem with the dust removal and ash removal system, the primary dust removal module removes large-particle dust, the secondary medium-efficiency dust removal module removes medium-particle dust, and the tertiary high-efficiency dust removal module removes small-particle dust. This not only effectively reduces the dust load on the tertiary high-efficiency dust removal module and increases its service life, but also effectively improves the filtration, purification, dust removal and ash removal efficiency of the entire system, achieving production safety and environmental protection. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the present invention is shown;

[0020] Figure 2 A three-dimensional schematic diagram of the diversion plate and internal reverse jet blowing device of the present invention is shown.

[0021] Figure 3A top view showing the installation method and position of the guide plate and reverse jetting device of the present invention inside the filter plate;

[0022] Figure 4 A plan view showing the guide plate and reverse jetting device of the present invention installed inside the filter plate is shown.

[0023] Figure 5 A schematic diagram of the connection of the reverse jet blowing device inside the diversion plate of the present invention is shown.

[0024] Figure 6 A three-dimensional schematic diagram of the spherical intelligent pulse cleaning device of the present invention is shown;

[0025] Figure 7 This diagram illustrates the operation of the telescopic rod controlling the spherical nozzle to extend to the bottom of the filter cartridge according to the present invention.

[0026] Figure 8 A schematic diagram of the telescopic rod of the present invention extending and retracting within the filter cylinder is shown.

[0027] Figure 9 A three-dimensional schematic diagram of the spray module of the present invention is shown;

[0028] Figure 10 A three-dimensional schematic diagram of the overall ash removal system of the present invention is shown;

[0029] Figure 11 A schematic diagram of the ash unloading device of the present invention is shown;

[0030] In the diagram: 1. Primary dust collector module; 2. Secondary medium-efficiency dust collector module; 3. Tertiary high-efficiency dust collector module; 4. Spraying module; 5. Ash discharge belt; 6. Filter screen; 7. Reverse-jet cleaning device; 8. Filter plate; 81. Drainage plate; 811. Ventilation holes; 82. Reverse-jet cleaning device; 821. Jet air hole; 822. Built-in nozzle; 823. Jet duct; 9. Pulse cleaning device; 10. Filter cartridge; 11. Spraying device; 111. 112. Nozzle, 12. Support rod, 12. Spherical intelligent pulse cleaning device, 121. Spherical blow head, 1211. Blowing hole, 122. Control valve, 123. Telescopic rod, 124. Air tank, 125. Air guide rod, 13. Ash collection bin, 14. Gear assembly, 15. Main control box, 16. Partition plate, 17. Ash unloading device, 171. Roller, 172. Scraper, 18. Air inlet, 19. Air outlet, 20. Gravity ash unloading plate. Detailed Implementation

[0031] The present invention will be further illustrated by the following examples.

[0032] like Figure 1 , Figure 2 and Figure 11As shown, a graded purification dry filtration dust removal system includes a main control box 15 and a dust discharge belt 5. The dust discharge belt 5 has a dust collection bin 13 at its end. The dust collection bin 13 is connected to a dust discharge device 17 that is connected to the dust discharge belt 5 for transmission. Above the dust discharge belt 5, along the conveying direction of the dust discharge belt 5, there are sequentially arranged a primary dust removal module 1, a secondary medium-efficiency dust removal module 2, a tertiary high-efficiency dust removal module 3, and a spray module 4. The front end of the primary dust removal module is connected to an air inlet 18, and the rear end of the spray module 4 is connected to an air outlet 19.

[0033] Below the primary dust removal module 1 and the secondary medium-efficiency dust removal module 2, there is a gravity unloading plate 20 equipped with a gravity sensor. The gravity sensor monitors the gravity in real time and unloads the ash downwards when the gravity reaches a certain value for centralized cleaning.

[0034] The primary dust removal module 1 includes a filter screen 6 and a back-blowing cleaning device 7 located behind the filter screen 6. The back-blowing cleaning device 7 is at a 45° angle to the filter screen 6, which helps the back-blowing airflow to more effectively flush the surface of the filter screen 6, regularly clean the dust particles accumulated on the filter screen 6, and ensure the air permeability and filtration performance of the filter screen 6.

[0035] The secondary medium-efficiency dust removal module 2 includes a filter plate 8 and a pulse cleaning device 9. The filter plate 8 is provided with a guide plate 81, and the surface of the guide plate 81 is provided with dense ventilation holes 811. A reverse jet cleaning device 82 connected to the pulse cleaning device 9 is installed in the guide plate 81. Part of the airflow of the pulse cleaning device 9 directly enters the interior of the filter plate 8, and part of it is ejected from the interior of the guide plate 81 through the ventilation holes 811 through the reverse jet cleaning device 82. This can change the pulse airflow entering the filter plate 8, thereby achieving the purpose of dust removal.

[0036] The three-stage high-efficiency dust removal module 3 includes a filter cartridge 10 and a spherical intelligent pulse cleaning device 12 that works in conjunction with cleaning the filter cartridge 10. The spherical intelligent pulse cleaning device 12 also has the function of cleaning the filter cartridge 10. Combined with the pulse cleaning device of the two-stage medium-efficiency dust removal module 2 and the back-flushing cleaning device 7 of the first-stage primary dust removal module 1, the filter screen 6, filter plate 8 and filter cartridge 10 in the system can maintain good filtration efficiency and extend their service life.

[0037] The pore size on filter screen 6, filter plate 8, and filter cartridge 10 decreases sequentially; this enables step-by-step filtration and dust removal, graded dust treatment, and reduces the dust load on filter screen 6, filter plate 8, and filter cartridge 10.

[0038] The main control box 15 is installed on the outer wall of the spray module 4. The main control box 15 connects and controls the ash discharge belt 5, the gravity ash discharge plate 20, the back-blowing cleaning device 7, the pulse cleaning device 9, the spherical intelligent pulse cleaning device 12, and the spray module 4.

[0039] To further improve the dust removal effect on filter plate 8, such as... Figures 2 to 5As shown, a gap is left between the guide plate 81 and the filter plate 8 to facilitate airflow. The reverse jet cleaning device 82 is equipped with a built-in nozzle 822 and jet air holes 821 on its surface. The built-in nozzle 822 is connected to the pulse cleaning device 9 through a jet pipe 823. The pulse air port of the pulse cleaning device 9 is rectangular to facilitate the entry of pulse airflow into the filter plate 8. When the reverse jet cleaning device 82 starts working, gas enters the device through the jet pipe 823, and the airflow enters the filter plate 8 through the jet air holes 821 and the ventilation holes 811, thereby changing the airflow trajectory of the pulse cleaning device 9 and achieving the purpose of cleaning.

[0040] To further improve the dust removal effect on filter cartridge 10, such as... Figures 6 to 8 As shown, the spherical pulse cleaning device includes a control valve 122 and an air tank 124 connected thereto. Several horizontally arranged air guide rods 125 are connected to the control valve 122, and several vertically arranged telescopic rods 123 are connected to the air guide rods 125. A spherical nozzle 121 is connected to the end of each telescopic rod 123, and the spherical nozzle 121 has small spray holes 1211. The telescopic rods 123 control the spherical nozzles 121 to move up and down reciprocally within the filter cartridge 10, enabling overall cleaning of the filter cartridge 10. Simultaneously, the main control box 15 adjusts and controls the interval skip-sequence cleaning mode of the multiple rows of filter cartridges 10. This interval skip-sequence cleaning mode avoids mutual interference between adjacent rows of filter cartridges 10 during cleaning, improving the cleaning effect and efficiency of the filter cartridges 10.

[0041] To facilitate centralized processing of the filtered dust, further, such as Figure 9 As shown, the spray module 4 is equipped with a spray device 11, which includes a support rod 112 and a nozzle 111 mounted on the support rod 112 that can spray out a dust binder. When the ash unloading belt 5 carrying dust particles passes by, the nozzle 111 will spray out a spray containing a dust binder to bind the dust particles into clumps, which facilitates subsequent ash unloading and reduces the dust from flying during the unloading process, thus reducing the risk of secondary dust generation.

[0042] Furthermore, such as Figure 10 and Figure 11 As shown, the ash unloading device 17 includes a roller 171 and several scrapers 172. The scrapers 172 are evenly spaced on the roller 171, and adjacent scrapers 172 form a V-shaped structure. The end of the roller 171 is connected to the ash unloading belt 5 via a gear assembly 14, and the roller 171 and the ash unloading belt 5 rotate in the same direction. The several scrapers 172 form several V-shaped ash unloading chambers, which can smoothly collect the clumps of dust on the ash unloading belt 5 into the ash hopper 13.

[0043] To prevent clumps of dust from adhering to the ash discharge belt 5 and affecting its transport efficiency, the scraper 172 is made of a flexible material. The end of the scraper 172 furthest from the roller 171 is in contact with the surface of the ash discharge belt 5. This allows for the cleaning of clumps of dust loaded on the ash discharge belt 5. The flexible material of the scraper 172 also extends the service life of both the ash discharge belt 5 and the scraper 172 itself, reducing equipment wear and replacement frequency.

[0044] Furthermore, such as Figure 1 As shown, the secondary medium-efficiency dust removal module 2 and the tertiary high-efficiency dust removal module 3 are separated by a baffle 16 through which airflow passes. This effectively optimizes the airflow trajectory within the system, ensuring orderly dust removal and improving overall dust removal efficiency.

[0045] In specific implementation of this invention: the dust-laden airflow first enters the primary dust removal module 1; larger dust particles are intercepted by the filter screen 6. As dust gradually accumulates on the filter screen 6, the back-blowing cleaning device 7 initiates the back-blowing operation according to the set time interval or the degree of dust accumulation. The back-blowing airflow blows towards the filter screen 6 at a 45° angle, blowing off the accumulated dust particles, which fall into the gravity discharge plate 20 below, thus achieving primary dust removal and preliminary cleaning.

[0046] After passing through the primary dust collector, the airflow enters the secondary medium-efficiency dust collector module 2. The airflow is filtered through the filter plate 8, and the pulse cleaning device 9 periodically sprays pulse airflow into the filter plate 8. The pulse air inlet adopts a rectangular structure, allowing the pulse airflow to enter the filter plate 8 quickly and evenly. Simultaneously, the reverse jet cleaning device 82 is activated inside the guide plate 81, and the built-in nozzle 822 sprays reverse airflow, changing the trajectory of the pulse airflow so that the cleaning airflow can more fully contact all parts of the filter plate 8, removing the dust particles attached to the filter plate 8. The dust particles also fall onto the gravity discharge plate 20. When the dust particles on the gravity discharge plate 20 reach the preset value monitored by the gravity sensor, the gravity discharge plate 20 concentrates the dust particles and discharges them onto the discharge belt 5.

[0047] Next, the airflow from the secondary dust removal stage enters the tertiary high-efficiency dust removal module 3. The filter cartridge 10 further filters the fine dust in the airflow, and the spherical intelligent pulse cleaning device 12 begins operation under the control of the main control box 15. According to the preset cleaning sequence, the control valve 122 controls the telescopic rod 123 to move the spherical blow nozzle 121 up and down inside the filter cartridge 10. The small nozzles 1211 on the surface of the spherical blow nozzle 121 spray high-pressure cleaning airflow from the air tank 124 in all directions, removing dust particles from the filter cartridge 10. The dust particles also fall into the dust discharge belt 5.

[0048] During the dust conveying process of the ash discharge belt 5, the nozzles 111 of the spray module 4 begin to operate. When the ash discharge belt 5 passes under the nozzles 111, the nozzles 111 spray out a spray containing a dust binder, which binds the dust particles on the ash discharge belt 5 into clumps. As the ash discharge belt 5 continues to run to the end, the gear assembly drives the roller 171 of the ash discharge device 17 to rotate, causing both the scraper 172 and the ash discharge belt 5 to rotate clockwise, thus the contact points between the scraper 172 and the ash discharge belt 5 are opposite. The scraper 172 can scrape the bound dust particles into the ash collection bin 13, thereby completing the ash discharge process.

Claims

1. A graded purification dry filtration dust removal system, comprising a main control box (15) and a dust discharge belt (5), wherein a dust collection bin (13) is provided at the end of the dust discharge belt (5), characterized in that, The ash collection bin (13) is connected to an ash discharge device (17) that is connected to the ash discharge belt (5). Above the ash discharge belt (5), along the conveying direction of the ash discharge belt (5), there are sequentially arranged a primary dust removal module (1), a secondary medium-efficiency dust removal module (2), a tertiary high-efficiency dust removal module (3), and a spray module (4). The front end of the primary dust removal module is connected to an air inlet (18), and the rear end of the spray module (4) is connected to an air outlet (19). A gravity dust removal plate (20) equipped with a gravity sensor is installed below the primary dust removal module (1) and the secondary medium-efficiency dust removal module (2). The primary dust removal module (1) includes a filter screen (6) and a back-blowing cleaning device (7) located behind the filter screen (6). The secondary medium-efficiency dust removal module (2) includes a filter plate (8) and a pulse cleaning device (9). The filter plate (8) is provided with a guide plate (81). The surface of the guide plate (81) is provided with dense ventilation holes (811). The guide plate (81) is equipped with a reverse jet cleaning device (82) connected to the pulse cleaning device (9). A gap is left between the flow guide plate (81) and the filter plate (8); the reverse jet cleaning device (82) is equipped with a built-in nozzle (822) and a jet air hole (821) on its surface. The built-in nozzle (822) is connected to the pulse cleaning device (9) through the jet pipe (823); the pulse air port of the pulse cleaning device (9) is set to be rectangular, and part of the pulse airflow directly enters the interior of the filter plate (8) through the pulse air port; at the same time, when the reverse jet cleaning device (82) starts to work, part of the gas enters the device through the jet pipe (823), and the airflow enters the interior of the filter plate (8) through the jet air hole (821) and the ventilation hole (811), changing the airflow trajectory of the pulse cleaning device (9) so that the cleaning airflow can contact the various parts of the filter plate (8) more fully; The three-stage high-efficiency dust removal module (3) includes a filter cartridge (10) and a spherical intelligent pulse cleaning device (12) that works in conjunction with the filter cartridge (10) for dust removal. The pore sizes on the filter screen (6), filter plate (8), and filter cylinder (10) decrease sequentially; The main control box (15) connects to control the ash discharge belt (5), gravity ash discharge plate (20), reverse air cleaning device (7), pulse cleaning device (9), spherical intelligent pulse cleaning device (12) and spray module (4); The spherical pulse cleaning device includes a control valve (122) and an air tank (124) connected thereto. Several horizontally arranged air guide rods (125) are connected to the control valve (122). Several vertically arranged telescopic rods (123) are connected to the air guide rods (125). A spherical nozzle (121) is connected to the end of the telescopic rod (123). The spherical nozzle (121) is provided with a small nozzle (1211). The multi-row filter cartridges (10) are adjusted and controlled by the main control box (15) to adopt an interval skip-sequence cleaning mode. The spray module (4) is equipped with a spray device (11), which includes a support rod (112) and a nozzle (111) installed on the support rod (112) that can spray out dust binder.

2. The graded purification dry filtration dust removal system according to claim 1, characterized in that, The ash unloading device (17) includes a roller (171) and several scrapers (172). The scrapers (172) are evenly distributed on the roller (171). The adjacent scrapers (172) form a V-shaped structure. The end of the roller (171) is connected to the ash unloading belt (5) through a gear assembly (14). The roller (171) and the ash unloading belt (5) rotate in the same direction.

3. The graded purification dry filtration dust removal system according to claim 2, characterized in that, The scraper (172) is made of flexible material, and the end of the scraper (172) away from the roller (171) is attached to the surface of the ash discharge belt (5).

4. The graded purification dry filtration dust removal system according to claim 1, characterized in that, The secondary medium-efficiency dust removal module (2) and the tertiary high-efficiency dust removal module (3) are separated by a partition (16) through which airflow passes.

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