Industrial dedusting inert powder pre-spraying device

Abstract

The utility model provides an industry dedusting inert powder pre -spraying device relates to industry dedusting technical field to solve the technical problem of serious inert powder waste in the prior art in the process of industry dedusting inert powder pre -spraying, an industry dedusting inert powder pre -spraying device, include: dust remover ash bucket box body and spiral conveying component, dust remover ash bucket box body is equipped with the air inlet, and dust remover ash bucket box body bottom is equipped with the discharge gate, spiral conveying component includes spiral conveying shaft, driving part, blow -off spare and a plurality of gas spray head, spiral conveying shaft is connected in dust remover ash bucket box body along horizontal direction rotation and is located dust remover ash bucket box body bottom, spiral conveying shaft is equipped with spiral piece along the axial direction on, driving part connects spiral conveying shaft and drives spiral conveying shaft rotation, a plurality of gas spray head is equipped on spiral conveying shaft along the axial direction of spiral conveying shaft interval, spiral conveying shaft adopts hollow steel pipe, and the compressed gas is in the inside, and blow -off spare is connected in spiral conveying shaft and is communicated all gas spray head.

Description

Technical Field

[0001] This utility model relates to the field of industrial dust removal technology, specifically to an industrial dust removal inert powder pre-coating device. Background Technology

[0002] In the field of industrial dust removal, for places with explosive, flammable, or oily dust exhaust gases, it is necessary to add inert powder to the exhaust gas and use the inert powder for pre-spraying. This allows the inert powder to mix with the dust in the exhaust gas to form agglomerated particles, thereby reducing the danger during treatment and making the dust easier to handle.

[0003] In the existing inert powder pre-coating process, exhaust gas is drawn into the chamber by a negative pressure fan, while inert powder is simultaneously supplied into the chamber by an inert powder adder. The inert powder mixes with the dust in the exhaust gas inside the chamber. Currently, the inert powder pre-coating process consumes a large amount of inert powder, resulting in significant waste. The main reason for this is that the inert powder and dust do not mix sufficiently during the mixing process, with some inert powder remaining unmixed, leading to waste. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an industrial dust removal inert powder pre-coating device to solve the technical problem of serious waste of inert powder in the existing industrial dust removal inert powder pre-coating process.

[0005] To solve the above-mentioned technical problems, this utility model provides an industrial dust removal inert powder pre-coating device, comprising: The dust collector hopper housing is equipped with an air inlet and a discharge port at the bottom. The screw conveyor assembly includes a screw conveyor shaft, a drive unit, an air blowing unit, and several air nozzles. The screw conveyor shaft is rotatably connected to the dust collector hopper box in the horizontal direction and is located at the bottom of the dust collector hopper box. The screw conveyor shaft is provided with screw blades along the axial direction. The drive unit is connected to the screw conveyor shaft and drives the screw conveyor shaft to rotate. Several air nozzles are spaced apart on the screw conveyor shaft along the axial direction. The screw conveyor shaft is provided with a cavity. The air blowing unit is connected to the screw conveyor shaft and communicates with all the air nozzles through the cavity.

[0006] With the above structure, the industrial dust removal inert powder pre-coating device of this utility model has the following advantages: the dust and inert powder filtered down by the dust collector fall through the ash hopper to the spiral conveying assembly at the bottom of the dust collector ash hopper box. During the process of being spirally conveyed to the discharge port, the blowing of the air nozzles arranged at intervals on the hollow spiral conveying shaft causes the inert powder that has not been fully mixed with the sticky dust to be agitated again. Under the combined action of the dust collector's filtering airflow, the aforementioned inert powder rises again and mixes with the target sticky dust for adsorption or filtration onto the surface of the dust collector filter element, thus being reused and reducing the waste of inert powder.

[0007] As an improvement, all air nozzles are tilted away from the discharge port. With this structure, the tilt direction of the air nozzles is opposite to the feeding direction of the screw conveyor shaft, which makes the inert powder that is blown up stay in the dust collector hopper for a longer time, reducing the waste of inert powder.

[0008] As an improvement, all air nozzles are equidistantly distributed circumferentially; this structure allows for more complete air spraying and reduces waste of inert powder.

[0009] As an improvement, this utility model also includes a reducing four-way valve located below the screw conveyor assembly. The reducing four-way valve includes a first end and a second end arranged opposite to each other, as well as a third end and a fourth end arranged opposite to each other. The first end is connected to the discharge port, the second end is connected to a collection box, the third end is connected to the air inlet, and the fourth end is connected to an axial flow fan. With this structure, a small portion of inert powder is pushed into the reducing four-way valve along with the agglomerated particles. This portion of inert powder can be blown back into the dust collector ash hopper by the axial flow fan through the third end for secondary use, reducing the waste of inert powder.

[0010] As an improvement, the third end is connected to the air inlet via a negative pressure pipe. With this structure, the synergistic effect of the negative pressure pipe and the axial flow fan helps the inert powder return to the dust collector hopper for secondary utilization, reducing the waste of inert powder.

[0011] As an improvement, an air blowing pipe is connected to the reducing four-way connector, which is located between the second and fourth ends. With this structure, the intermittent air blowing of the negative pressure pipe, axial flow fan and air blowing pipe helps the inert powder to return to the air inlet pipe for secondary use, reducing the waste of inert powder. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a side view of the present invention.

[0014] Figure 3 This is a three-dimensional structural diagram of the spiral conveyor shaft part in this utility model.

[0015] Figure 4 This is a schematic diagram of the connection structure between the gas nozzle and the spiral conveyor shaft of this utility model.

[0016] Figure 5 This is a cross-sectional schematic diagram of the spiral conveyor shaft in this utility model.

[0017] Reference numerals in the attached drawings: 1. Dust collector hopper housing; 2. Air inlet; 3. Air outlet; 4. Discharge port; 5. Inert powder adder; 6. Collection box; 7. Screw conveyor assembly; 71. Screw conveyor shaft; 72. Drive component; 73. Air nozzle; 8. Spiral blade; 9. Cavity; 10. Air inlet duct; 11. Reducing four-way connector; 111. First end; 112. Second end; 113. Third end; 114. Fourth end; 12. Axial flow fan; 13. Rotary rotary valve; 14. Negative pressure pipe; 15. Air blowing pipe; 16. Filter element. Detailed Implementation

[0018] The following is a detailed description of an industrial dust removal inert powder pre-coating device according to the present invention, with reference to the accompanying drawings.

[0019] like Figures 1 to 5 As shown, an industrial dust removal inert powder pre-coating device includes a dust collector hopper box 1, an inert powder adder 5, a collection box 6, and a screw conveyor assembly 7. The dust collector hopper box 1 is provided with an air inlet 2 and an air outlet 3 and is connected to a negative pressure fan for drawing exhaust gas from the air inlet 2. The bottom end of the dust collector hopper box 1 is provided with a discharge port 4.

[0020] like Figure 2 As shown, the dust collector hopper box 1 is provided with an air inlet pipe 10. An air inlet 2 is provided on the air inlet pipe 10 at one end away from the dust collector hopper box 1. An air outlet 3 is provided at the top of the dust collector hopper box 1. A negative pressure fan (not shown in the figure) is also provided at the top of the dust collector hopper box 1. The air inlet pipe 10 is set horizontally.

[0021] In addition, such as Figure 1 As shown, the dust collector hopper box 1 is equipped with a filter element 16. The filter element 16 is located between the air inlet 2 and the air outlet 3 in the height direction. The filter element 16 filters the dust and inert powder in the exhaust gas discharged from the air outlet 3.

[0022] like Figure 2 As shown, the inert powder adder 5 is used to input inert powder into the dust collector hopper box 1. The inert powder adder 5 is connected to the air inlet pipe 10. The inert powder adder 5 directly delivers inert powder into the air inlet pipe 10. The specific structure and working principle of the inert powder adder 5 are existing technologies and will not be described in detail here.

[0023] like Figure 1As shown, the screw conveyor assembly 7 includes a screw conveyor shaft 71, a drive component 72, an air blowing component, and several air nozzles 73. The screw conveyor shaft 71 is rotatably connected to the dust collector hopper box 1 in the horizontal direction and is located at the bottom of the dust collector hopper box 1, while the air inlet 2 is higher than the screw conveyor shaft 71 in the height direction. The screw conveyor shaft 71 is provided with a screw blade 8 along the axial direction. The drive component 72 is connected to the screw conveyor shaft 71 and drives the screw conveyor shaft 71 to rotate. In this embodiment, the drive component 72 is a reducer motor and is connected to the outer wall of the dust collector hopper box 1.

[0024] like Figure 1 As shown, several air nozzles 73 are spaced apart on the screw conveyor shaft 71 along its axial direction. A cavity 9 is provided inside the screw conveyor shaft 71. An air blowing component is connected to the screw conveyor shaft 71 and communicates with all the air nozzles 73 through the cavity 9. For more details, please refer to... Figure 1 In this embodiment, the spiral conveying shaft 71 is arranged in the left-right direction. The right end of the spiral conveying shaft 71 is exposed outside the dust collector ash hopper box 1 and is connected to a rotary joint. The spiral conveying shaft 71 is connected to the compressed air solenoid valve through the rotary joint. The compressed air solenoid valve is connected to the air blowing component. During the rotation of the spiral conveying shaft 71, the rotary joint prevents the compressed air solenoid valve and the air blowing component from rotating.

[0025] like Figure 1 and Figure 2 As shown, the collection box 6 is located at the bottom of the dust collector ash hopper box 1 and is connected to the discharge port 4.

[0026] The dust and inert powder filtered by the dust collector fall through the ash hopper to the screw conveyor assembly 7 at the bottom of the dust collector ash hopper box 1. During the process of being screw conveyed to the discharge port 4, the air nozzles 73 arranged at intervals on the hollow screw conveyor shaft 71 blow the inert powder that has not been fully mixed with the sticky dust and adhered and accumulated, causing it to be agitated again. Under the combined action of the dust collector's filtering airflow, the aforementioned inert powder rises again and mixes with the target sticky dust for adsorption or filtration onto the surface of the dust collector filter element, thus being reused and reducing the waste of inert powder.

[0027] In addition, such as Figure 3 and Figure 5 As shown, all air nozzles 73 are equidistantly distributed along the circumference. In this embodiment, two adjacent air nozzles 73 are spaced 120° apart in the circumferential direction, and three consecutive air nozzles 73 are equidistantly arranged at 120° on the cross-section of the spiral conveyor shaft 71, so that the air spraying effect is more complete and the waste of inert powder is reduced.

[0028] Furthermore, such as Figure 4 As shown, all air nozzles 73 are inclined away from the discharge port 4. Specifically, taking this embodiment as an example, the discharge port 4 in this embodiment is located close to the side wall of the dust collector hopper box 1, that is... Figure 1 On the left side, the end of the spiral blade 8 is located above the discharge port 4. The spiral conveyor shaft 71 pushes the agglomerated particles from right to left, while the air nozzle 73 is tilted to the right, with an angle of 80° between the air nozzle 73 and the horizontal plane. This allows the blown inert powder to remain in the dust collector hopper 1 for a longer time, reducing waste of inert powder. In this embodiment, the diameter of the air nozzle 73 is 3-5 mm to reduce the airflow rate.

[0029] In this embodiment, the discharge port 4 is located near the side wall of the dust collector hopper box 1, which can extend the falling path of the agglomerated particles and thus extend the residence time of the unmixed inert powder in the dust collector hopper box 1. In addition, the discharge port 4 can also be located in the middle of the bottom of the dust collector hopper box 1. In this embodiment, a screw conveyor shaft 71 needs to be set on each side of the discharge port 4. The pushing direction of the two screw conveyor shafts 71 and the air outlet direction of their respective air nozzles 73 are opposite, which leads to a shortening of the length of the screw conveyor shafts 71. In this embodiment, the structure in which the discharge port 4 is located near the side wall of the dust collector hopper box 1 is more conducive to reducing the waste of inert powder.

[0030] like Figure 2 As shown, a reducing four-way connector 11 connects the discharge port 4 and the collection box 6. The reducing four-way connector 11 is located below the screw conveyor assembly 7. The reducing four-way connector 11 includes a first end 111 and a second end 112 arranged opposite to each other, and a third end 113 and a fourth end 114 arranged opposite to each other. That is, in this embodiment, the reducing four-way connector 11 is a four-way pipe. The first end 111 and the second end 112 are respectively connected to the discharge port 4 and the collection box 6, the third end 113 is connected to the air inlet 2, specifically the air inlet pipe 10, and the fourth end 114 is connected to the axial flow fan 1. 2. The first end 111 is connected to a star-shaped ash discharge valve 13. The star-shaped ash discharge valve 13 is located between the first end 111 and the discharge port 4. The star-shaped ash discharge valve 13 can isolate the reducing four-way valve 11 from the outside atmosphere, ensuring that the material is discharged while preventing air from entering. The third end 113 is connected to the air inlet 2 through a negative pressure pipe 14. Specifically, the third end 113 is connected to the air inlet pipe 10 through a negative pressure pipe 14. The negative pressure pipe 14 and the axial flow fan 12 work together to help the inert powder return to the air inlet pipe 10 for secondary use, reducing the waste of inert powder.

[0031] In addition, continue to refer to Figure 2A reducing four-way valve 11 is connected to an air blowing pipe 15, which is located between the second end 112 and the fourth end 114. Specifically, the air blowing pipe 15 is located on the side wall near the second end 112, and is connected to the reducing four-way valve 11 via another compressed air solenoid valve. Negative pressure can be generated in the negative pressure pipe 14 by installing a negative pressure fan. The intermittent air blowing from the negative pressure pipe 14, the axial flow fan 12, and the air blowing pipe 15 works synergistically to help the inert powder return to the air inlet pipe 10 for secondary utilization, reducing waste of inert powder.

[0032] This utility model adopts a recycling process to reduce the waste of inert powder, achieve energy saving and environmental protection, and has good versatility and high reliability. Different sizes of screw conveyor shafts 71 can be selected according to the air volume of the dust collector.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. An industrial dust removal inert powder pre-coating device, characterized in that, include: The dust collector hopper box (1) is provided with an air inlet (2), and the bottom end of the dust collector hopper box (1) is provided with a discharge port (4). The spiral conveyor assembly (7) includes a spiral conveyor shaft (71), a drive unit (72), an air blowing unit, and several air nozzles (73). The spiral conveyor shaft (71) is rotatably connected to the dust collector hopper box (1) in the horizontal direction and is located at the bottom of the dust collector hopper box (1). Spiral blades (8) are provided on the spiral conveyor shaft (71) along the axial direction. The drive unit (72) is connected to the spiral conveyor shaft (71) and drives the spiral conveyor shaft (71) to rotate. Several air nozzles (73) are spaced apart on the spiral conveyor shaft (71) along the axial direction. A cavity (9) is provided inside the spiral conveyor shaft (71). The air blowing unit is connected to the spiral conveyor shaft (71) and communicates with all the air nozzles (73) through the cavity (9).

2. The industrial dust removal inert powder pre-coating device according to claim 1, characterized in that, All of the air nozzles (73) are tilted away from the discharge port (4).

3. The industrial dust removal inert powder pre-coating device according to claim 1, characterized in that, All of the gas nozzles (73) are equidistantly distributed in the circumferential direction.

4. The industrial dust removal inert powder pre-coating device according to claim 1, characterized in that, It also includes a reducing cross (11) located below the spiral conveyor assembly (7). The reducing cross (11) includes a first end (111) and a second end (112) arranged opposite to each other, as well as a third end (113) and a fourth end (114) arranged opposite to each other. The first end (111) is connected to the discharge port (4), the second end (112) is connected to the collection box (6), the third end (113) is connected to the air inlet (2), and the fourth end (114) is connected to the axial flow fan (12).

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