Dust removal device for furnace kiln

Abstract

The utility model relates to the technical field of furnace dust removal, and discloses a dust removal device for a furnace, which comprises a shell, a filter cavity is arranged in the shell, an air inlet communicated with the filter cavity is arranged at the bottom of the shell, an air outlet communicated with the filter cavity is arranged on the outer wall of the shell, and a turbofan is coaxially and rotatably arranged in the shell. According to the dust removal device for the furnace kiln, when a large amount of dust is attached to the inner surface of the filter net bag, the liquid spraying head is started to spray cleaning liquid in the rotating direction of the turbine fan, the cleaning liquid is driven to flow along the surface of the filter net bag through the rotating motion of the turbine fan, and therefore the dust removal effect is achieved. The adhesive force of dust particles is reduced, the dust is easily cleaned and removed, and is discharged from the backflow outlet along with the cleaning liquid, so that a large amount of dust is prevented from being attached to the filtering net bag, and in addition, the dust attached to fan blades of the turbofan can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace dust removal, in particular to a furnace dust removal device. Background Art

[0002] The dust removal device for furnaces and kilns is a device used to remove solid particles and particulate matter such as dust and smoke from furnace and kiln emissions. In industrial production, furnaces and kilns are common heat treatment equipment used to heat materials, carry out combustion or other chemical reactions. During the operation of the furnace and kiln, the emissions will contain a large amount of solid particles. If they are directly discharged into the atmosphere, they will not only cause environmental pollution, but also cause harm to human health. The dust removal device for furnaces and kilns captures and removes solid particles in the furnace and kiln emissions through physical or chemical methods to purify the exhaust gas. Common dust removal equipment includes cyclone dust collectors, bag dust collectors, electrostatic precipitators, wet dust collectors, etc. These devices can effectively remove solid particles from furnace and kiln emissions, improve the environmental protection performance of the furnace and kiln, and meet environmental protection regulations and standards. The dust removal device plays a key role in the furnace and kiln equipment, which can not only protect the environment, but also protect the health of workers. Therefore, in the production process of furnaces and kilns, the dust removal device is one of the indispensable equipment.

[0003] However, the existing dust removal devices for furnaces and kilns need to frequently replace the bags during use. Since bag replacement requires downtime, it will increase production interruption time, affect production progress and efficiency, and increase maintenance costs, including the purchase of new bags, manual replacement and other costs, which increase the company's operating costs. In addition, after the device stops working, some dust will flow back into the furnace. After entering the furnace, the dust will adhere to the surface inside the combustion system, including the combustion chamber, burner and other components, causing serious dust accumulation inside the system. This will affect the normal operation of the combustion system, reduce heat exchange efficiency, increase fuel consumption, and may cause fire hazards. Utility Model Content

[0004] (I) Technical problems to be solved: In view of the deficiencies of the prior art, the utility model provides a dust removal device for furnaces, which has the advantages of reducing the frequency of bag replacement during the use of the device and reducing dust reflux, thereby solving the problem of frequent bag replacement and dust reflux during the use of the prior art dust removal device for furnaces.

[0005] (ii) Technical solution: In order to achieve the above-mentioned purpose of reducing the frequency of bag replacement during the use of the device and reducing dust reflux, the utility model provides the following technical solution: A dust removal device for a furnace, comprising a shell, a filter chamber is arranged in the shell, an air inlet connected to the filter chamber is arranged at the bottom of the shell, a flange structure is arranged around the air inlet, the shell is cylindrical, an air outlet connected to the filter chamber is opened on the outer wall of the shell, an annular turbofan is coaxially arranged in the shell, the turbofan exhausts air from the bottom air inlet side, a filter mesh bag is coaxially arranged on the outside of the turbofan, the diameter of the filter mesh bag is larger than the diameter of the turbofan, a reflux groove is arranged at the bottom of the filter chamber, the reflux groove and the shell are designed as a whole, a reflux outlet penetrating the shell is also opened on the reflux groove, and the filter mesh bag is fixedly installed at the upper end of the reflux groove.

[0006] Preferably, a liquid spray head connected to the filter chamber is further provided on the side of the shell, the liquid spray head and the shell are sealed, and the liquid spraying direction of the liquid spray head is toward the rotation direction of the turbo fan.

[0007] Preferably, the diameter of the filter bag is smaller than the diameter of the inner wall of the shell.

[0008] Preferably, the cross-section of the reflow groove is a trapezoidal shape that is larger at the top and smaller at the bottom.

[0009] Preferably, the rotating shaft of the turbofan passes through the shell and is connected to a motor, and the motor is fixedly mounted on the top end surface of the shell.

[0010] Preferably, a flange structure is coaxially arranged at the air outlet position.

[0011] (III) Beneficial effects: Compared with the prior art, the utility model provides a dust removal device for a furnace, which has the following beneficial effects:

[0012] 1. The dust removal device for a furnace uses a turbofan structure, a filter bag structure, and a liquid spray head. Compared with the traditional technical structure, dust will clog the filter bag after long-term use. When a large amount of dust is attached to the inner surface of the filter bag, the dust removal device for the furnace sprays cleaning liquid in the direction of rotation of the turbofan by starting the liquid spray head, and uses the rotating motion of the turbofan to drive the cleaning liquid to flow along the surface of the filter bag, thereby reducing the adhesion of dust particles, making the dust easy to be cleaned and removed, and discharged from the reflux outlet together with the cleaning liquid. The rotating motion of the turbofan can not only drive the cleaning liquid to flow on the surface of the filter bag, but also generate a certain scraping force to scrape off the dust condensate attached to the filter bag and discharge it into the reflux tank, and discharge the system through the reflux outlet, thereby avoiding a large amount of dust attached to the filter bag.

[0013] 2. This kind of dust removal device for furnaces and kilns, through the use of a turbofan structure and a liquid spray head structure, is compared with the traditional turbofan, which will have a large amount of dust attached to the surface of the blades after long-term use. The design of this dust removal device for furnaces and kilns can not only effectively reduce the attachment of dust to the turbofan blades, but also avoid the reduction of turbofan efficiency caused by dust attached to the blades, through the design of continuously spraying cleaning liquid in the direction of rotation of the turbofan. This regular cleaning practice can keep the surface of the turbofan clean, reduce the accumulation of dust on the fan blades, and prevent dust from affecting the normal operation of the fan and the air circulation efficiency. In addition, continuously spraying cleaning liquid to the turbofan can also help prevent dust from forming an adhesion layer on the fan surface, reduce wind resistance, and improve the working efficiency and performance stability of the fan. By keeping the fan clean and reducing the impact of adhered particles, it can ensure that the turbofan maintains an efficient and stable working state during long-term operation, extend the service life of the equipment, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural front view of a dust removal device for a furnace according to the utility model;

[0015] Figure 2 This is a structural side view of a dust removal device for a furnace according to the utility model;

[0016] Figure 3 This is a top view of the structure of a dust removal device for a furnace according to the utility model;

[0017] Figure 4 It is a three-dimensional schematic diagram of the structure of a dust removal device for a furnace of the utility model;

[0018] Figure 5 This is a cross-sectional view of the structure of a dust removal device for a furnace in the utility model taken along the AA direction;

[0019] Figure 6 This is a cross-sectional view of the structure of a dust removal device for a furnace in the utility model taken along the BB direction;

[0020] Figure 7 This is a cross-sectional view of the structure of a dust removal device for a furnace according to the utility model, taken along the CC direction.

[0021] In the figure: 1-housing, 2-filter chamber, 3-air inlet, 4-air outlet, 5-turbo fan, 6-filter mesh bag, 7-reflux groove, 8-reflux outlet, 9-liquid spray head, 10-motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A dust removal device for a furnace comprises a shell 1, a filter chamber 2 is arranged in the shell 1, an air inlet 3 connected to the filter chamber 2 is arranged at the bottom of the shell 1, a flange structure is arranged around the air inlet 3, the shell 1 is cylindrical, and an air outlet 4 connected to the filter chamber 2 is opened on the outer wall of the shell 1. Figure 7 As shown, a ring-shaped turbofan 5 is coaxially arranged in the housing 1, and the turbofan 5 takes in air from the bottom and discharges air from the side. The turbofan 5 takes in air from the bottom, which can better utilize the power of the air flow below, increase the air intake, and improve the working efficiency of the fan. At the same time, the air discharge from the side can avoid blowing the dust-containing smoke directly to the side, reduce the possibility of dust spreading again, and improve the dust removal effect. At the same time, the design of the bottom air intake and the side air discharge allows the fan to fully suck the smoke into the filter chamber 2 for filtration, ensuring the thoroughness of dust treatment, effectively reducing the possibility of dust remaining in the kiln, and improving the dust removal efficiency. Please refer to Figure 5 A filter bag 6 is coaxially arranged outside the turbofan 5. The diameter of the filter bag 6 is larger than that of the turbofan 5. By designing the diameter of the filter bag 6 to be larger than that of the turbofan 5, it can be ensured that all smoke drawn in by the fan must be filtered through the filter bag 6, thereby avoiding the possibility of dust being diffused into the environment again after entering the fan, and improving the dust removal effect. A reflux groove 7 is arranged at the bottom of the filter chamber 2. The reflux groove 7 is designed as an integral whole with the housing 1. A reflux outlet 8 penetrating the housing 1 is also provided on the reflux groove 7. The filter bag 6 is fixedly mounted on the upper end of the reflux groove 7.

[0024] Please participate Figure 4 , Figure 5 , Figure 6The side of the housing 1 is also provided with a liquid spray head 9 connected to the filter chamber 2. The liquid spray head 9 and the housing 1 are sealed. The liquid spray head 9 sprays liquid in the direction of rotation of the turbofan 5. The liquid spray head 9 sprays a solution that dissolves dust. When a large amount of dust is attached to the inner surface of the filter mesh bag 6, the liquid spray head 9 is started to spray cleaning liquid in the direction of rotation of the turbofan 5. The rotating motion of the turbofan 5 drives the cleaning liquid to flow along the surface of the filter mesh bag 6. The flowing cleaning liquid can effectively wet and infiltrate the surface of the filter mesh bag 6, reduce the adhesion of dust particles, and make the dust easy to be cleaned and removed and dissolved in the cleaning liquid, flow into the reflux groove 7, and be discharged from the reflux outlet 8. At the same time, the cleaning liquid can dissolve and decompose a certain degree of dust condensation attached to the filter mesh bag 6, making it easy to remove. At the same time, this structure can not only avoid frequent blockage of the filter mesh bag 6, but also avoid the reduction of the efficiency of the turbofan 5 due to dust attached to the fan blades. This regular cleaning practice can keep the surface of the turbofan 5 clean, reduce the accumulation of dust on the fan blades, and prevent dust from affecting the normal operation of the fan and the air circulation efficiency. In addition, continuously spraying cleaning liquid to the turbofan 5 can also help prevent dust from forming an adhesion layer on the fan surface, reduce wind resistance, and improve the working efficiency and performance stability of the fan. By keeping the fan clean and reducing the impact of adhered particles, it can ensure that the turbofan 5 maintains an efficient and stable working state during long-term operation, extend the service life of the equipment, and reduce maintenance costs. The diameter of the filter mesh bag 6 is smaller than the diameter of the inner wall of the shell 1. Since the diameter of the filter mesh bag 6 is smaller than the diameter of the inner wall of the shell 1, there will be a certain gap between the two, which can provide more flow space for the cleaning liquid, so that the cleaning liquid can fully cover the surface of the filter mesh bag 6 and effectively remove dust. The cross-sectional shape of the reflux groove 7 is a trapezoidal shape with a large top and a small bottom. The trapezoidal reflux groove 7 can help the cleaning liquid flow naturally to the lower part along the surface of the reflux groove 7, reduce the possibility of the cleaning liquid being retained in the reflux groove 7, improve the efficiency of the cleaning liquid reflux, and at the same time reduce the possibility of the cleaning liquid entering the kiln, avoiding damage to the internal equipment and materials of the kiln. A flange structure is coaxially arranged at the position of the air outlet 4. The rotating shaft of the turbo fan 5 passes through the housing 1 and is connected to a motor 10, which is fixedly mounted on the top surface of the housing 1.

[0025] Working principle: When in use, the air inlet 3 is connected to the exhaust port of the kiln and sealed by the flange structure; the motor 10 is started to drive the turbofan 5 to rotate, so that negative pressure is generated in the filter chamber 2, so that the smoke located in the exhaust port of the kiln is sucked into the filter chamber 2 for filtration. When the smoke moves into the filter chamber 2, it will diffuse outward along its circumferential direction. During the diffusion process, it will pass through the filter bag 6 and be discharged from the air outlet 4; when a large amount of dust is attached to the inner surface of the filter bag 6, the cleaning liquid is sprayed toward the rotation direction of the turbofan 5 by starting the liquid spray head 9, and the cleaning liquid is driven to flow along the surface of the filter bag 6 by the rotation of the turbofan 5. The flowing cleaning liquid can effectively wet and infiltrate the surface of the filter bag 6, reduce the adhesion of dust particles, and make the dust easy to be cleaned and removed and dissolved in the cleaning liquid, flow into the reflux tank 7, and be discharged from the reflux outlet 8. At the same time, the cleaning liquid can dissolve and decompose a certain degree of dust condensation attached to the filter bag 6, making it easy to remove. The rotation of the turbofan 5 can not only drive the cleaning liquid to flow on the surface of the filter bag 6, but also generate a certain scraping force to scrape off the dust condensation attached to the filter bag 6 and discharge it into the reflux groove 7, and then discharge it from the system through the reflux outlet 8. At the same time, the liquid spray head 9 continuously sprays the cleaning liquid in the rotation direction of the turbofan 5 to reduce the adhesion of dust on the blades of the turbofan 5, thereby avoiding the reduction of the efficiency of the turbofan 5 due to the adhesion of dust on the blades.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for a furnace, comprising a housing (1), a filter chamber (2) being arranged in the housing (1), an air inlet (3) communicating with the filter chamber (2) being arranged at the bottom of the housing (1), a flange structure being arranged around the air inlet (3), and characterized in that: The shell (1) is cylindrical in shape, and an air outlet (4) connected to the filter chamber (2) is provided on the outer wall of the shell (1). A turbofan (5) in the shape of an annulus is also coaxially rotatably arranged in the shell (1), and the turbofan (5) discharges air from the bottom air inlet side. A filter bag (6) is also coaxially arranged on the outer side of the turbofan (5), and the diameter of the filter bag (6) is larger than that of the turbofan (5). A reflow groove (7) is provided at the bottom of the filter chamber (2), and the reflow groove (7) is designed as an integral unit with the shell (1). A reflow outlet (8) penetrating the shell (1) is also provided on the reflow groove (7), and the filter bag (6) is fixedly mounted on the upper end of the reflow groove (7).

2. A dust removal device for a furnace according to claim 1, characterized in that: A liquid spray head (9) connected to the filter chamber (2) is also provided on the side of the shell (1); the liquid spray head (9) and the shell (1) are sealed and connected; the liquid spray direction of the liquid spray head (9) is towards the rotation direction of the turbo fan (5).

3. A dust removal device for a furnace according to claim 1, characterized in that: The diameter of the filter mesh bag (6) is smaller than the diameter of the inner wall of the shell (1).

4. A dust removal device for a furnace according to claim 1, characterized in that: The cross-sectional shape of the reflow groove (7) is a trapezoidal shape that is larger at the top and smaller at the bottom.

5. The dust removal device for a furnace according to claim 1, characterized in that: The rotating shaft of the turbofan (5) passes through the casing (1) and is connected to a motor (10); the motor (10) is fixedly mounted on the top end surface of the casing (1).

6. A dust removal device for a furnace according to claim 1, characterized in that: A flange structure is coaxially arranged at the position of the air outlet (4).

Images