A dust removal device

Abstract

A dust removal device includes a frame, a cyclone dust collector, a pulse dust collector, and a dust removal fan. It innovatively combines a cyclone dust collector and a pulse dust collector. High-dust-laden air first enters the cyclone dust collector, where the high concentration of dust rapidly settles under centrifugal force and is discharged through a discharger. Low-dust-laden air then rises into the pulse dust collector, significantly reducing the dust content. The cleaning action is triggered only after the pulse dust collector has been running for a period of time, resulting in a longer cleaning interval and effectively extending the equipment's health. The low-frequency pulse jets also significantly extend the service life of the filter bags. Furthermore, this invention replaces the traditional steel wire frame with a spring structure. After the cleaning controller issues a cleaning command, compressed air instantly inflates the filter bag, causing the bottom of the bag to rise rapidly and impact the end cap. Due to the spring, this impact force is buffered and absorbed, weakening the force between the filter bag and the end cap, further extending the filter bag's service life.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to dust removal technology, and in particular to a dust removal device. Background Technology

[0002] Baghouse dust collectors are a type of high-efficiency air purification equipment. They employ compartment-based pulse jet cleaning technology, which features strong cleaning ability, high dust removal efficiency, and low emission concentration.

[0003] However, in the existing technology, there are two problems in the operation of bag dust collectors: 1) High-concentration dust-laden air directly entering the bag dust collector will cause the filter bags to be quickly covered with dust, resulting in a high frequency of dust removal and accelerated equipment aging; 2) The filter bags will be frequently blown, and the rapidly expanding filter bags will shrink inward axially, with the bottom of the bag frequently hitting the bottom of the frame, resulting in an extremely high rate of filter bag damage. Utility Model Content

[0004] The purpose of this invention is to provide a dust removal device that uniquely combines a cyclone dust collector and a pulse dust collector. High-dust-laden air first enters the cyclone dust collector, where the high concentration of dust rapidly settles under centrifugal force and is discharged through the unloader. Low-dust-laden air then enters the pulse dust collector, where the dust content is significantly reduced. The cleaning action is triggered only after the pulse dust collector has been running for a period of time, resulting in a long cleaning interval and low cleaning frequency, effectively extending the equipment's health. In addition, the low-frequency pulse jet cleaning also significantly extends the service life of the filter bags.

[0005] To achieve the above objectives, this utility model provides a dust removal device, which includes a frame, a cyclone dust collector, a pulse dust collector, and a dust removal fan;

[0006] The frame is divided into an upper pulse dust collector box and a lower cyclone dust collector box by a partition, and a connecting window is opened in the center of the partition.

[0007] The cyclone dust collector is arranged in the lower cyclone dust collector box. The upper end of the cyclone dust collector is connected to the connecting window through a flange pipe. The air inlet of the cyclone dust collector is connected to the dust-laden gas. The bottom of the cyclone dust collector is equipped with a discharge device.

[0008] The pulse dust collector is arranged in the upper pulse dust collector box. The pulse dust collector includes a cleaning controller, a blowpipe, a dust collector bag, and a dust hopper arranged sequentially from top to bottom. An mounting plate is provided between the blowpipe and the dust collector bag. The outer periphery of the mounting plate is welded to the inner wall of the upper pulse dust collector box. The mounting plate divides the upper pulse dust collector box into a pulse chamber and a dust collector bag chamber. An exhaust port is opened on the side wall of the pulse chamber. The air inlet of the dust collector fan is connected to the exhaust port through a pipe. The mounting plate has an array of mounting holes. The cleaning controller is installed on the outside of the pulse chamber. The blowpipe... The outer end of the pipe connects to the dust removal controller, and the inner end extends into the inner cavity of the pulse box. Several nozzles are evenly distributed on the side wall of each of the jet pipes, with each nozzle pointing downwards towards its corresponding mounting hole. The dust collector bag includes a barrel-shaped frame, a bag, an end cap, and a jet funnel. The jet funnel is fitted into the upper end of the barrel-shaped frame, the end cap covers the lower end of the barrel-shaped frame, the jet funnel is installed in the mounting hole, and the bag is fitted around the outer periphery of the barrel-shaped frame. The ash hopper is located between the dust collector bag and the partition plate, and dust spilled from the jet bag is guided into the connecting window through the ash hopper.

[0009] Furthermore, the present invention provides a dust removal device in which an upper flange is provided at the upper end of the flange pipe, the upper flange being bolted to the partition plate, and a lower flange is provided at the lower end of the flange pipe, the lower flange being bolted to the upper end of the cyclone dust collector.

[0010] Furthermore, the present invention provides a dust removal device in which the upper edge of the ash hopper is bolted to the side wall of the dust collector bag box, and the lower opening of the ash hopper is welded to the partition plate.

[0011] Furthermore, the present invention provides a dust removal device in which a manual dust removal port is provided on the side wall of the cyclone dust collector.

[0012] Furthermore, the present invention provides a dust removal device in which the barrel-shaped frame is replaced by a spring, the upper end of the spring is sleeved on the blowing funnel, and the end cap is closed on the lower end of the spring.

[0013] This invention has the following advantages over the prior art:

[0014] On the one hand, this invention innovatively combines a cyclone dust collector and a pulse dust collector. High-dust-laden air first enters the cyclone dust collector, where the high concentration of dust rapidly settles under centrifugal force and is discharged through the unloader. Low-dust-laden air then rises into the pulse dust collector, where the dust content is significantly reduced. The cleaning action is triggered only after the pulse dust collector has been running for a period of time, resulting in a long cleaning interval and low cleaning frequency, effectively extending the equipment's health. The low-frequency pulse jets also significantly extend the service life of the filter bags. On the other hand, this invention replaces the traditional steel wire frame with a spring structure. After the cleaning controller issues a cleaning command, compressed air instantly inflates the filter bag, causing the bottom of the bag to rise rapidly and impact the end cap. Due to the spring, this impact force is buffered and absorbed, weakening the force between the filter bag and the end cap, further extending the service life of the filter bag. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a dust removal device according to the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the dust removal bag box of the dust removal device of this utility model;

[0017] Figure 3 This is a schematic diagram of the frame and barrel-shaped filter bag structure in a dust removal device according to this utility model.

[0018] The components include: 1. Dust collector fan; 2. Partition plate; 3. Pulse box; 4. Lower cyclone dust collector box; 5. Flange pipe; 6. Air inlet; 7. Unloader; 8. Cyclone dust collector; 9. Manual dust removal port; 10. Dust removal controller; 11. Pulse jet pipe; 12. Filter bag; 13. Dust hopper; 14. Mounting plate; 15. Dust collector bag box; 16. Exhaust outlet; 17. Pipeline; 18. Mounting hole; 19. End cap; 20. Pulse jet funnel; 21. Spring. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-3 As shown, this embodiment provides a dust removal device, which includes a frame, a cyclone dust collector 8, a pulse dust collector and a dust removal fan 1;

[0023] The frame is divided into an upper pulse dust collector box and a lower cyclone dust collector box 4 by a partition 2, and a connecting window is opened in the center of the partition 2;

[0024] The cyclone dust collector 8 is arranged in the lower cyclone dust collector box 4. The upper end of the cyclone dust collector 8 is connected to the connecting window through the flange pipe 5. The air inlet 6 of the cyclone dust collector 8 is connected to the dust-laden gas. The bottom of the cyclone dust collector 8 is equipped with a discharge device 7. The side wall of the cyclone dust collector 8 is provided with a manual cleaning port 9. The upper end of the flange pipe 5 is provided with an upper flange, which is bolted to the partition plate 2. The lower end of the flange pipe 5 is provided with a lower flange, which is bolted to the upper end of the cyclone dust collector 8.

[0025] The pulse dust collector is arranged in the upper pulse dust collector box. The pulse dust collector includes a dust removal controller 10, a blowpipe 11, a dust collector bag, and a dust hopper 13 arranged sequentially from top to bottom. A mounting plate 14 is provided between the blowpipe 11 and the dust collector bag. The outer periphery of the mounting plate 14 is welded to the inner wall of the upper pulse dust collector box. The mounting plate 14 divides the upper pulse dust collector box into a pulse box 3 and a dust collector bag box 15. An exhaust port 16 is opened on the side wall of the pulse box 3. The air inlet of the dust collector fan 1 is connected to the exhaust port 16 through a pipe 17. The mounting plate 14 has an array of mounting holes 18. The dust removal controller 10 is installed on the outside of the pulse box 3. The outer end of the blowpipe 11 is connected to the dust removal controller 10, and the inner end extends into the inner cavity of the pulse box 3. Each of the aforementioned blowpipes 11 has several nozzles evenly distributed on its sidewall, with each nozzle pointing downwards towards its corresponding mounting hole 18; the dust collector bag includes a barrel-shaped frame, a bag 12, an end cap 19, and a blowpipe funnel 20. In this embodiment, the barrel-shaped frame is replaced by a spring 21; the blowpipe funnel 20 is fitted into the upper end of the barrel-shaped frame, the end cap 19 is fitted into the lower end of the barrel-shaped frame, the blowpipe funnel 20 is installed in the mounting hole 18, and the bag 12 is fitted around the outer periphery of the barrel-shaped frame; the ash hopper 13 is disposed between the dust collector bag and the partition plate 2, and the dust scattered from the blowpipe dust collector bag is guided into the communicating window through the ash hopper 13. The upper edge of the ash hopper 13 is bolted to the sidewall of the dust collector bag box 15, and the lower opening of the ash hopper 13 is welded to the partition plate 2;

[0026] The usage method and principle of the dust removal device in this embodiment are as follows:

[0027] High-dust-content gas enters the cyclone dust collector 8 through inlet 6 and rotates at high speed along the inner wall. The high-dust content moves downwards under strong centrifugal force until it is discharged by unloader 7. Low-dust-content gas moves upwards along the axis of the cyclone dust collector 8, passes through flange 5, and enters the upper ash hopper 13. The inner cavity of ash hopper 13 is significantly larger than that of flange 5. The dust-laden gas expands within ash hopper 13, and dust particles rise with the airflow into the filter bags. After being filtered by numerous filter bags, the dust particles are retained on the outside of the filter bags. The purified gas enters the pulse box 3 from inside the filter bags and is then discharged into the atmosphere through exhaust port 16. When the dust on the surface of the filter bags continuously increases, causing the equipment resistance to rise to a set value, the cyclone dust collector 8 stops, and the dust removal controller 10 issues a dust removal warning. The command opens the pulse valves one by one, allowing compressed air to blow dust onto the filter bags through the nozzles, causing the filter bags to suddenly expand. Under the action of the reverse airflow, the dust adhering to the surface of the filter bags quickly falls into the ash hopper 13, slides down the inner wall of the ash hopper 13 to the connecting window, and falls through the connecting window to the bottom of the cyclone dust collector 8, and is finally discharged by the unloader 7. After all the filter bags have been blown and cleaned, the dust collector returns to normal operation. When the filter bags suddenly expand, there will be a strong upward force on the inner bottom of the barrel-shaped filter bags. This force forces the inner bottom of the filter bags to hit the end cap 19. This utility model relies on the spring 21 to absorb this impact force, that is, the impact is significantly mitigated when the filter bags are lifted, which greatly extends the service life of the filter bags.

[0028] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0029] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A dust removal device, characterized in that, Includes frame, cyclone dust collector (8), pulse dust collector and dust removal fan (1); The frame is divided into an upper pulse dust collector box and a lower cyclone dust collector box (4) by a partition (2), and a connecting window is opened in the center of the partition (2); The cyclone dust collector (8) is arranged in the lower cyclone dust collector box (4). The upper end of the cyclone dust collector (8) is connected to the connecting window through the flange pipe (5). The air inlet (6) of the cyclone dust collector (8) is connected to the dust-laden gas. The bottom of the cyclone dust collector (8) is equipped with a discharger (7). The pulse dust collector is arranged in the upper pulse dust collector box. The pulse dust collector includes a dust removal controller (10), a blow pipe (11), a dust collector bag, and a dust hopper (13) arranged sequentially from top to bottom. An installation plate (14) is provided between the blow pipe (11) and the dust collector bag. The outer periphery of the installation plate (14) is welded to the inner wall of the upper pulse dust collector box. The installation plate (14) divides the upper pulse dust collector box into a pulse box (3) and a dust collector bag box (15). An exhaust port (16) is opened on the side wall of the pulse box (3). The air inlet of the dust collector fan (1) is connected to the exhaust port (16) through a pipe (17). The surface of the installation plate (14) has an array of several mounting holes (18). The dust removal controller (10) is installed in the pulse box (3). On the outside, the outer end of the blowpipe (11) is connected to the dust removal controller (10), and the inner end extends into the inner cavity of the pulse box (3). Each blowpipe (11) has several nozzles evenly distributed on its side wall, and each nozzle points downward to the corresponding mounting hole (18). The dust collector bag includes a barrel-shaped frame, a bag (12), an end cap (19), and a blowpipe funnel (20). The blowpipe funnel (20) is fitted into the upper end of the barrel-shaped frame, and the end cap (19) is fitted into the lower end of the barrel-shaped frame. The blowpipe funnel (20) is installed in the mounting hole (18), and the bag (12) is fitted around the outer periphery of the barrel-shaped frame. The ash hopper (13) is located between the dust collector bag and the partition (2), and the ash hopper (13) is connected to the connecting window.

2. The dust removal device according to claim 1, characterized in that, The upper end of the flange pipe (5) is provided with an upper flange, which is bolted to the partition plate (2). The lower end of the flange pipe (5) is provided with a lower flange, which is bolted to the upper end of the cyclone dust collector (8).

3. The dust removal device according to claim 1, characterized in that, The upper edge of the ash hopper (13) is bolted to the side wall of the dust collector bag box (15), and the lower opening of the ash hopper (13) is welded to the partition plate (2).

4. The dust removal device according to claim 1, characterized in that, The cyclone dust collector (8) has a manual cleaning port (9) on its side wall.

5. The dust removal device according to claim 1, characterized in that, The barrel-shaped frame is replaced by a spring (21), the upper end of which is fitted onto the blow-off funnel (20), and the end cap (19) is fitted onto the lower end of the spring (21).

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