An improved dust extraction device

Abstract

The utility model discloses an improved dust removal equipment, including dust removal box, dust removal box includes the pulse box, cloth bag box and hopper connected from top to bottom in proper order, make the adjustment to the barrel -shaped framework structure creatively, add the spring between barrel -shaped framework and blow -off funnel, the inner bottom of barrel -shaped cloth bag also sticks to end cover, after the dust cleaning controller sends dust cleaning instruction, compressed air makes cloth bag inflation momentarily, the bottom of barrel -shaped cloth bag is lifted up quickly and impact on end cover, because the setting of spring, this impact force is absorbed by spring buffering, and the effect between cloth bag and end cover is weakened, and cloth bag service life is prolonged significantly, in addition, when spraying in each row, the barrel -shaped framework of first spraying has not stopped axial vibration when the barrel -shaped cloth bag of later spraying, and the dust of barrel -shaped cloth bag of later spraying is difficult to cover on the surface of first spraying, and the dust cleaning effect is better.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to bag filters, especially an improved 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] Its working principle is as follows: After the dust-laden gas enters the dust collector, due to the rapid expansion of the gas volume, some of the coarser dust particles fall into the ash hopper due to inertia or natural settling, while most of the remaining dust particles rise with the airflow and enter the filter bags. After being filtered by the filter bags, the dust particles are retained on the outside of the filter bags. The purified gas enters the pulse box from the inside of the filter bags and is then discharged into the atmosphere through the exhaust port. When the dust on the surface of the filter bags continues to increase, causing the equipment resistance to rise to the set value, the dust removal controller issues a dust removal command, opening the pulse valves one by one, so that compressed air is sprayed through the nozzles to clean the filter bags. This causes the filter bags to suddenly expand. Under the action of the reverse airflow, the dust attached to the surface of the filter bags quickly falls off and into the ash hopper. The dust is discharged by the unloader. After all the filter bags have been cleaned by the pulse jet, the dust collector returns to normal operation.

[0004] In the existing technology, there are two problems in the above process: 1) The filter bags are frequently blown, and the rapidly expanding filter bags will shrink inward in the axial direction. The bottom of the bag will frequently hit the bottom of the frame, resulting in a very high damage rate of the filter bags; 2) There are a large number of filter bags and the compressed air is limited, so it is impossible to blow all the filter bags at once. The dust removal controller can only open the corresponding pulse valve one by one and blow the bags row by row. The dust from the filter bags that are blown later will quickly cover the surface of the filter bags that have already been blown, resulting in incomplete dust removal. Utility Model Content

[0005] The purpose of this invention is to provide an improved dust removal device. It innovatively adjusts the barrel-shaped frame structure by adding a spring between the barrel-shaped frame and the blowing funnel. The inner bottom of the barrel-shaped filter bag is also tightly attached to the end cap. After the dust removal controller issues a dust removal command, compressed air instantly expands the filter bag, causing the bottom of the barrel-shaped filter bag to quickly rise 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, significantly extending the service life of the filter bag. Furthermore, during sequential blowing, when the later-blown barrel-shaped filter bag is being blown, the barrel-shaped frame that was blown earlier has not yet stopped axial vibration. Therefore, the dust blown by the later-blown filter bag is less likely to cover the surface of the earlier-blown filter bag, resulting in better dust removal.

[0006] To achieve the above objectives, this utility model provides an improved dust removal device, which includes a dust collection box, a pulse jet cleaning system, a discharger, and a dust removal fan;

[0007] The dust collector box includes a pulse jet box, a bag filter box, and a dust hopper connected sequentially from top to bottom. A mounting plate is welded inside the pulse jet box, and the mounting plate has an array of mounting holes on its surface. An exhaust port is opened on the side wall of the pulse jet box. The air inlet of the dust collector fan is connected to the exhaust port via a pipe. The pulse jet cleaning system includes a cleaning controller and several jet rods. The cleaning controller is installed on the outside of the pulse jet box. The outer end of each jet rod is connected to the cleaning controller, and its inner end extends into the inner cavity of the pulse jet box. Several nozzles are evenly distributed on the side wall of each jet rod, and each nozzle points downwards towards its corresponding mounting hole. The side wall of the dust hopper is provided with a dust-laden gas inlet pipe and a manual cleaning port. The lower end of the dust hopper is provided with a dust discharge port, and a discharge device is installed at the dust discharge port.

[0008] The bag box contains several barrel-shaped frames and barrel-shaped bags. The upper end of the barrel-shaped frame is fitted onto the lower end of a spring, and the upper end of the spring is fitted into a blow-drilling funnel. The lower end of the barrel-shaped frame is covered with an end cap. The blow-drilling funnel is installed in the mounting hole. The barrel-shaped bag is fitted onto the outer periphery of the barrel-shaped frame, and the opening of the barrel-shaped bag is connected to the outer edge of the blow-drilling funnel. The inner bottom of the barrel-shaped bag is tightly attached to the end cap.

[0009] Furthermore, this utility model provides an improved dust removal device, wherein the barrel-shaped frame includes several rings and several steel wires, the steel wires are arranged in a ring array, the rings are alternately sleeved on the outer circumference of the steel wires, the rings and the steel wires are welded together, and the lower end of the spring is connected to the inner ring of the steel wire.

[0010] Furthermore, this utility model provides an improved dust removal device, wherein each of the steel wires and the spring has at least two welding points.

[0011] Furthermore, this utility model provides an improved dust removal device, wherein the upper end of the spring is welded to the blowing funnel.

[0012] This invention has the following advantages over the prior art:

[0013] On the one hand, the barrel-shaped frame structure is uniquely adjusted by adding a spring between the barrel-shaped frame and the blowing funnel. The inner bottom of the barrel-shaped filter bag is also tightly attached to the end cap. After the dust removal controller issues the dust removal command, the compressed air instantly expands the filter bag, and the bottom of the filter bag quickly rises and impacts the end cap. Due to the spring, this impact force is buffered and absorbed by the spring, weakening the force between the filter bag and the end cap, and significantly extending the service life of the filter bag. On the other hand, when blowing in rows, the barrel-shaped filter bag being blown later is still vibrating axially in the barrel-shaped frame that has been blown earlier. The dust blown by the later barrel-shaped filter bag is difficult to cover the surface of the barrel-shaped filter bag that has been blown earlier, resulting in better dust removal effect. In addition, in order to prevent the frame from undergoing significant radial vibration under the compression of the filter bag, this invention welds at least two points between each steel wire and the spring, which improves the connection strength and significantly suppresses the radial vibration of the frame. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an improved dust removal device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the dust removal bag box of an improved dust removal device according to this utility model;

[0016] Figure 3 This is a schematic diagram of the barrel-shaped frame and barrel-shaped filter bag structure in an improved dust removal device according to this utility model.

[0017] The components include: 1. Unloader; 2. Dust collector fan; 3. Pulse box; 4. Bag hopper; 5. Dust hopper; 6. Mounting plate; 7. Mounting hole; 8. Exhaust outlet; 9. Pipeline; 10. Dust removal controller; 11. Pulse jet bar; 12. Dust-laden gas inlet pipe; 13. Manual dust removal port; 14. Barrel-shaped filter bag; 15. Pulse jet funnel; 16. Spring; 17. End cap; 18. Ring; 19. Steel wire. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] like Figures 1-3 As shown, this embodiment provides an improved dust removal device, which includes a dust collection box, a pulse jet cleaning system, a discharger 1, and a dust removal fan 2;

[0022] The dust collector box includes a pulse jet box 3, a bag filter box 4, and a dust hopper 5 connected sequentially from top to bottom. A mounting plate 6 is welded inside the pulse jet box 3. The mounting plate 6 has several mounting holes 7 arranged in an array on its surface. An exhaust port 8 is opened on the side wall of the pulse jet box 3. The air inlet of the dust collector fan 2 is connected to the exhaust port 8 via a pipe 9. The pulse jet cleaning system includes a dust removal controller 10 and several jet rods 11. The dust removal controller 10 is installed on the outside of the pulse jet box 3. The outer end of each jet rod 11 is connected to the dust removal controller 10, and its inner end extends into the inner cavity of the pulse jet box 3. Several nozzles are evenly distributed on the side wall of each jet rod 11, and each nozzle points downwards towards its corresponding mounting hole 7. The side wall of the dust hopper 5 is provided with a dust-laden gas inlet pipe 12 and a manual dust removal port 13. The lower end of the dust hopper 5 is provided with a dust discharge port, and the unloader 1 is installed at the dust discharge port.

[0023] The bag box 4 contains several barrel-shaped frames and barrel-shaped bags 14. The upper end of the barrel-shaped frame is fitted onto the lower end of the spring 16, and the upper end of the spring 16 is fitted into the blowing funnel 15. In this embodiment, the upper end of the spring 16 is welded to the blowing funnel 15. The lower end of the barrel-shaped frame is covered by an end cap 17. The blowing funnel 15 is installed in the mounting hole 7. The barrel-shaped bags 14 are fitted onto the outer periphery of the barrel-shaped frame. The opening of the barrel-shaped bags 14 is connected to the outer edge of the blowing funnel 15, and the inner bottom of the barrel-shaped bags 14 is tightly attached to the end cap 17.

[0024] The specific structure of the barrel-shaped skeleton is as follows: Figure 3 As shown, the barrel-shaped frame includes several rings 18 and several steel wires 19. The steel wires 19 are arranged in a ring array, and the rings 18 are alternately sleeved on the outer periphery of the steel wires 19. The rings 18 and the steel wires 19 are welded together. The lower end of the spring 16 is connected to the inner ring of the steel wire 19. In order to improve the connection strength, there are at least two welding points between each steel wire 19 and the spring 16.

[0025] The usage method and principle of the improved dust removal equipment in this embodiment are as follows:

[0026] Dust-laden gas enters the dust hopper 5 through the dust-laden gas inlet pipe 12. Due to the rapid expansion of the gas volume, some of the coarser dust particles fall to the bottom of the dust hopper 5 due to inertia or natural settling. Most of the remaining dust particles rise with the airflow and enter the bag filter box 4. After being filtered by numerous barrel-shaped filter bags 14, the dust particles are retained on the outside of the barrel-shaped filter bags 14. The purified gas enters the pulse box 3 from inside the barrel-shaped filter bags 14 and is then discharged into the atmosphere through the exhaust port 8. When the dust on the surface of the barrel-shaped filter bags 14 continuously increases, causing the equipment resistance to rise to the set value, the dust removal controller 10 issues a dust removal command, opening the pulse valves one by one, so that compressed air is sprayed through the nozzles to clean the filter bags. This causes the barrel-shaped filter bags 14 to suddenly expand. Under the action of the reverse airflow, the dust attached to the surface of the filter bags quickly falls off and into the dust hopper 5. The dust is discharged by the unloader 1, and all the dust is discharged from the bag. After the cleaning of the barrel-shaped filter bag 14 is completed, the dust collector resumes normal operation. When the barrel-shaped filter bag 14 suddenly expands, there will be a strong upward force at the inner bottom of the barrel-shaped filter bag 14. This force forces the inner bottom of the barrel-shaped filter bag 14 to hit the end cover 17. In this invention, a spring 16 is added between the cleaning funnel 15 and the barrel-shaped frame. The spring 16 absorbs this impact force. That is, when the barrel-shaped filter bag 14 is lifted, the impact is transmitted to the spring 16 through the end cover 17 and the barrel-shaped frame. The impact energy is significantly slowed down, which greatly extends the service life of the barrel-shaped filter bag 14. Secondly, when cleaning row by row, when the barrel-shaped filter bag 14 is cleaned later, the barrel-shaped frame that was cleaned earlier has not yet stopped axial vibration. The dust cleaned by the barrel-shaped filter bag 14 after cleaning later is difficult to cover the surface of the barrel-shaped filter bag 14 that was cleaned earlier, resulting in a better cleaning effect.

[0027] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0028] 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. An improved dust removal device, characterized in that, Includes a dust collection box, a pulse jet cleaning system, a discharger (1), and a dust collection fan (2); The dust collection box includes a pulse box (3), a bag box (4), and a dust hopper (5) connected sequentially from top to bottom; a mounting plate (6) is welded inside the pulse box (3), and the mounting plate (6) has several mounting holes (7) arrayed on its surface; an exhaust port (8) is opened on the side wall of the pulse box (3); the air inlet of the dust collector fan (2) is connected to the exhaust port (8) through a pipe (9); the pulse jet cleaning system includes a dust removal controller (10) and several jet rods (11), and the dust removal controller (10) is installed... Installed on the outside of the pulse box (3), the outer end of the blow rod (11) is connected to the dust removal controller (10), and the inner end extends into the inner cavity of the pulse box (3). Each blow rod (11) has several nozzles evenly distributed on its side wall, and each nozzle points downwards to the corresponding mounting hole (7). The side wall of the ash hopper (5) is provided with a dust-laden gas inlet pipe (12) and a manual dust removal port (13). The lower end of the ash hopper (5) is provided with an ash discharge port, and the unloader (1) is installed at the ash discharge port. The bag box (4) is provided with several barrel-shaped frames and barrel-shaped bags (14). The upper end of the barrel-shaped frame is fitted onto the lower end of the spring (16). The upper end of the spring (16) is fitted into the blowing funnel (15). The lower end of the barrel-shaped frame is covered with an end cap (17). The blowing funnel (15) is installed in the mounting hole (7). The barrel-shaped bag (14) is fitted onto the outer periphery of the barrel-shaped frame. The bag opening of the barrel-shaped bag (14) is connected to the outer edge of the blowing funnel (15). The inner bottom of the barrel-shaped bag (14) is tightly attached to the end cap (17).

2. The improved dust removal equipment according to claim 1, characterized in that, The barrel-shaped frame includes several rings (18) and several steel wires (19). The steel wires (19) are arranged in a ring array. The rings (18) are alternately sleeved on the outer periphery of the steel wires (19). The rings (18) and the steel wires (19) are welded together. The lower end of the spring (16) is connected to the inner ring of the steel wires (19).

3. The improved dust removal equipment according to claim 2, characterized in that, There are at least two welding points between each of the steel wires (19) and the spring (16).

4. The improved dust removal equipment according to claim 1, characterized in that, The upper end of the spring (16) is welded to the blow-off funnel (15).

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