Dust falling device for metallurgical waste gas

Abstract

The invention discloses a dust falling device for metallurgical waste gas, and relates to the technical field of waste gas dust falling, the dust falling device comprises a waste gas dust falling box, the two ends of the waste gas dust falling box are respectively provided with a waste gas inlet and a waste gas outlet for waste gas entering and discharging, and a waste gas dust falling unit for carrying out dust falling on the metallurgical waste gas is arranged in the waste gas dust falling box; four supporting leg columns which are in contact with the ground to support the base are arranged at the bottom of the base; the waste gas dust falling unit comprises a first dust filtering plate and a second dust filtering plate which are arranged in a spaced mode and are fixed in the waste gas dust falling box in a sealed mode in parallel, a dust falling cavity is formed between the first dust filtering plate and the second dust filtering plate, and the dust falling cavity is filled with activated carbon particles used for conducting adsorption and dust falling treatment on waste gas. Metallurgy waste gas can make contact with most activated carbon particles, so that the contact area of the whole activated carbon particles and the waste gas can be increased, and the utilization rate of the whole activated carbon particles is increased.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas dust reduction, and in particular to a dust reduction device for metallurgical waste gas. Background Art

[0002] The activated carbon adsorption box is the best purification equipment for treating organic waste gas and odor. Activated carbon adsorption is an effective measure to remove water odor, natural and synthetic dissolved organic matter, micro-pollutants, etc. Most of the larger organic molecules, aromatic compounds, halogenated alkynes, etc. can be firmly adsorbed on the surface or in the gaps of activated carbon, and it has a significant removal effect on humus, synthetic organic matter and low molecular weight organic matter. When there are more dust and particulate matter, the activated carbon adsorption device can be used together with the water curtain machine, water spray tower and UV plasma to achieve waste gas purification and emission standards.

[0003] In the prior art, due to long-term use, a large amount of dust and debris will adhere to the two inlets and outlets of the activated carbon box, which are difficult to clean and may even affect the effect of subsequent exhaust gas treatment. In addition, the activated carbon box does not have a shock-resistant structure. When the vibration is too strong, the activated carbon plate inside the activated carbon box will fall off.

[0004] The existing patent (publication number: CN210331969U) proposes an activated carbon box for exhaust gas dust removal, including a box body, frames are sleeved on both sides of the outer wall of the box body, and multiple first shock-absorbing springs are fixedly arranged between the box body and the two frames. Support rods are fixedly arranged at the four corners on one side of one frame, and one end of the four support rods is fixedly connected to the four corners on one side of the other frame. Two box doors are hingedly arranged in the middle part of one side of the box body. The two frames are sleeved on the outside of the activated carbon box and the first shock-absorbing springs are arranged between the frames and the box body to increase the seismic resistance of the activated carbon box, thereby preventing the activated carbon plate inside the box from falling off; the cleaning rollers are arranged on the two connecting plates, and the cleaning rollers clean the inlet and outlet. When not in use, the connecting plates are rotated to fit on the box door, thereby not occupying the space inside the box.

[0005] The existing patent (Announcement No.: CN114345075A) proposes a horizontal activated carbon adsorption box, including a box body provided with an air inlet and an air outlet, an inlet and outlet I is opened on the top wall of the box body, wherein a receiving box is recessed downward on the bottom wall of the box body, and two groups of filter screens with bottom ends inserted into the receiving box are arranged in the inlet and outlet I, wherein the corresponding top ends of the front and rear sides of the two groups of filter screens are connected by a connecting plate, and the cavity formed between the filter screens and the connecting plate is filled with activated carbon, and recessed portions are evenly arranged on the side walls of the filter screens, and an inlet and outlet II is arranged at the bottom of the receiving box, wherein a guide hopper is arranged in the bottom between the two groups of filter screens and the connecting plate, and a discharge pipe inserted into the inlet and outlet II is arranged at the bottom of the guide hopper, wherein a lifting frame is arranged on the discharge pipe, and a cylinder I is arranged directly below the bottom of the receiving box outside the inlet and outlet II, and the cylinder guide column of the cylinder I extends into the receiving box and is fixedly connected to the lifting frame, which has a simple structure and is easy to use.

[0006] The above-mentioned activated carbon box for dust removal has the following disadvantages when in use: the activated carbon particles filled in the activated carbon box are in a static state, and the exhaust gas entering the filter chamber can only come into contact with a part of the activated carbon particles, thereby reducing the contact area between the exhaust gas and the activated carbon particles, reducing the utilization rate of the activated carbon particles, and at the same time, it does not have the function of cleaning the contacted activated carbon particles. After long-term use, a large amount of impurities and dust are adsorbed on the surface of the activated carbon particles, and the activated carbon is in a saturated state, which will cause the dust removal effect of the activated carbon particles to deteriorate. For this reason, we propose a dust reduction device for metallurgical exhaust gas to solve the above problems. Summary of the invention

[0007] The present invention provides a dust reduction device for metallurgical waste gas, which solves the technical problem that the activated carbon particles filled in the activated carbon box are all in a static state, and the waste gas can only contact with a part of the activated carbon particles when entering the filter cavity, thereby reducing the contact area between the waste gas and the activated carbon particles, reducing the utilization rate of the activated carbon particles, and at the same time has no function of cleaning the contacted activated carbon particles. After long-term use, the surface of the activated carbon particles adsorbs a lot of impurities and dust, and the activated carbon is in a saturated state, which will lead to poor dust removal effect of the activated carbon particles.

[0008] In order to solve the above technical problems, the present invention provides a dust reduction device for metallurgical waste gas, comprising:

[0009] The exhaust gas dust reduction box has an exhaust gas inlet and an exhaust gas outlet at both ends for exhaust gas to enter and discharge, and an exhaust gas dust reduction unit for metallurgical exhaust gas is arranged inside, and four supporting legs are arranged at the bottom for contacting with the ground to support it;

[0010] The exhaust gas dust reduction unit comprises: a first dust filter plate and a second dust filter plate which are separated and parallel to each other and sealed and fixed in an exhaust gas dust reduction box, a dust reduction chamber is formed between the first dust filter plate and the second dust filter plate, the dust reduction chamber is filled with activated carbon particles for adsorbing and dust reduction treatment of the exhaust gas, a feed inlet for placing the activated carbon particles is provided on the exhaust gas dust reduction box above the dust reduction chamber, a discharge port for discharging the activated carbon particles is provided on the exhaust gas dust reduction box below the dust reduction chamber, a return box is fixedly installed on the top of the exhaust gas dust reduction box, the return box cover is arranged above the feed inlet, a discharge box is fixedly installed on the bottom of the exhaust gas dust reduction box, and the discharge box is located below the discharge port;

[0011] The exhaust gas dust reduction box is also provided with a control component for controlling the activated carbon particles in the dust reduction chamber to be in a circulating motion state, and the control component includes a receiving plate, a discharge port, a movable plate, a support spring, a discharge channel, a cleaning box, a mounting shell, a rotating shaft, a spiral conveying auger, a driving motor and a return channel. The receiving plate can be slidably arranged inside the discharge box, and the discharge port is through the lower part of the right side wall of the discharge box. A slide groove is arranged inside the discharge port, and the movable plate is slidably arranged inside the slide groove. The support spring is fixedly mounted on the bottom end of the movable plate, and the discharge channel is fixedly mounted on the right side outer wall of the discharge box, and one end of the discharge channel is connected to the discharge port. The cleaning box is fixedly installed on the bottom of the discharge box, and the end of the discharge channel away from the discharge port is fixedly connected to the inner cavity of the cleaning box, the mounting shell is fixedly installed inside the cleaning box, the mounting shell has a straight cylindrical structure, the top of the mounting shell passes through the exhaust gas dust reduction box and extends to the upper part of the exhaust gas dust reduction box, the rotating shaft is rotatably arranged inside the mounting shell, the spiral conveying auger is fixedly installed on the outer wall of the rotating shaft, the driving motor is fixedly installed on the top of the mounting shell, and the driving end of the driving motor is fixedly connected to the top of the rotating shaft, the return channel is fixedly installed on the outer wall of the upper part of the mounting shell, and the end of the return channel away from the mounting shell is fixedly connected to the inner cavity of the return box.

[0012] Preferably, both the first dust filter plate and the second dust filter plate are provided with filter holes for filtering exhaust gas, the filter holes provided on the first dust filter plate are located on the lower half of the first dust filter plate, and the filter holes provided on the second dust filter plate are located on the upper half of the second dust filter plate, and the interior of the dust reduction chamber is also staggered and separated by vertical plates, one of which is fixedly connected to the bottom wall of the exhaust gas dust reduction box, and the other is fixedly connected to the top wall of the exhaust gas dust reduction box.

[0013] Preferably, an upper guide plate and a lower guide plate are fixedly installed inside the cleaning box, the upper guide plate is fixedly connected to the inner top wall of the cleaning box, the lower guide plate is fixedly connected to the inner bottom wall of the cleaning box, and the upper guide plate and the lower guide plate are staggered and inclined.

[0014] Preferably, it also includes an intermittent plugging component arranged at the lower part of the exhaust gas dust reduction box to reduce the amount of exhaust gas escaping from the exhaust gas dust reduction box during the circulation movement of the activated carbon particles, the intermittent plugging component includes the lower air blocking plate, the air supply channel, the air supply pipe, the air supply hole, the upper stroke switch, the lower stroke switch, the exhaust channel, the cylinder and the connecting rod, the lower air blocking plate is slidably plugged into the bottom wall of the exhaust gas dust reduction box, the air supply channel is penetrated and opened on the bottom wall of the exhaust gas dust reduction box, the air supply hole is penetrated and opened on the lower air blocking plate, and the lower air blocking plate is used to block the exhaust gas When the lower discharge port of the exhaust dust reduction box is closed, the air supply hole can be vertically symmetrical with the air supply channel, the air supply pipe is fixedly installed on the bottom surface of the exhaust dust reduction box, the top of the air supply pipe is connected with the air supply channel, the bottom of the air supply pipe is connected with the inner cavity of the discharge box, the upper stroke switch is fixedly embedded in the bottom surface of the lower air baffle plate, the lower stroke switch is fixedly installed on the inner side wall of the discharge box, the exhaust channel is opened on the side wall of the discharge box, the cylinder is fixedly installed on the lower surface of the exhaust dust reduction box, and the connecting rod is fixedly installed in the middle of the bottom surface of the lower air baffle plate.

[0015] Preferably, the return box is provided with a reciprocating plugging assembly for reducing the amount of exhaust gas escaping from the exhaust dust suppression box during the circulation of activated carbon particles. The reciprocating plugging assembly includes a weighing plate, a lower rack, a linkage gear, an upper air blocking plate, an upper rack, an electric push rod and a weighing sensor. The weighing plate is slidably arranged on the upper side wall of the exhaust dust suppression box, the lower rack is fixedly mounted on the top surface of the weighing plate, the linkage gear is rotatably arranged on the top of the exhaust dust suppression box, the upper air blocking plate is slidably arranged on the return box, and the upper air blocking plate is located above the weighing plate, the upper rack is fixedly mounted on the bottom surface of the upper air blocking plate, the lower rack and the upper rack are both meshed with the linkage gear, the electric push rod is fixedly mounted on the top of the return box, the telescopic end of the electric push rod is fixedly connected to the upper air blocking plate, and the weighing sensor is mounted on the top surface of the weighing plate.

[0016] Preferably, the interior of the cleaning box is provided with a stirring assembly for stirring the activated carbon particles entering therein, the stirring assembly comprising a stirring rod, a driven bevel gear, a rotating rod, an active bevel gear, a transmission gear, a connecting rod and a transmission rack; the stirring rod is rotatably arranged inside the cleaning box, and a stirring blade is installed on the outer wall of the stirring rod extending to one end of the inner wall of the cleaning box, the driven bevel gear is fixedly installed on the outer end of the stirring rod, a cross beam is installed on the side wall of the cleaning box, the rotating rod is rotatably installed on the cross beam, the active bevel gear is fixedly installed on the bottom end of the rotating rod, the active bevel gear is meshingly connected with the driven bevel gear, the transmission gear is fixedly installed on the top end of the rotating rod, the transmission rack is fixedly installed on the bottom end of the connecting rod, and the transmission rack is meshingly connected with the transmission gear.

[0017] Preferably, a water supply tank for storing clean water is also fixedly installed at the bottom of the cleaning box, and a water supply assembly for supplying water to the inside of the cleaning box is arranged on the water supply tank, and the water supply assembly includes a partition, a piston plate, a piston rod, a return spring, a water supply pipe and a first solenoid valve, the partition is fixedly installed inside the water supply tank, and the inner cavity of the water supply tank is divided into a water storage chamber and a water supply chamber by the partition, and a water diversion hole connecting the water storage chamber and the water supply chamber is opened at the bottom of the partition, and a one-way valve is fixedly installed inside the water diversion hole, and the piston plate is slidably arranged inside the water supply chamber. The piston rod is slidably arranged on the side wall of the water supply tank, and one end of the piston rod extending to the inside of the water supply chamber is fixedly connected to the side wall of the piston plate, the return spring is sleeved on the outer wall of the piston rod, one end of the return spring is fixedly connected to the piston plate, and the other end of the return spring is fixedly connected to the inner wall of the water supply tank, the water supply pipe is fixedly installed on the side wall of the water supply tank at one end and is connected to the water supply chamber, the other end of the water supply pipe is fixedly installed on the side wall of the cleaning box and is connected to the inner cavity of the cleaning box, and the first solenoid valve is fixedly installed on the water supply pipe.

[0018] Preferably, an air pump is fixedly mounted on the outer wall of the water supply box, and an air suction pipe and an air supply pipe are connected to the air suction pump. The end of the air suction pipe away from the air suction pump is connected to the inner cavity of the cleaning box, and the end of the air supply pipe away from the air suction pump is connected to the inner cavity of the water supply chamber.

[0019] Preferably, the water supply tank is also provided with a spray assembly for spraying dust reduction inside the exhaust gas dust reduction box, the spray assembly includes an air pressure sensor, an exhaust pipe, a spray pipe and a second solenoid valve, the air pressure sensor is fixedly mounted on the water supply tank, and the detection end of the air pressure sensor extends to the inside of the water supply chamber, one end of the exhaust pipe extends to the inside of the exhaust gas dust reduction box, and the other end of the exhaust pipe is connected to the inner cavity of the water supply chamber, the spray pipe is fixedly mounted on the end of the exhaust pipe extending to the inside of the exhaust gas dust reduction box, and the second solenoid valve is fixedly mounted on the exhaust pipe.

[0020] Preferably, there is a small gap between the outer peripheral wall of the spiral conveying auger and the inner wall of the mounting shell through which activated carbon particles cannot pass, and microholes for drainage are penetrated through the end surface of the lower half of the spiral conveying auger.

[0021] Compared with the related art, the dust reduction device for metallurgical waste gas provided by the present invention has the following beneficial effects:

[0022] In the present invention, the activated carbon particles filled in the dust reduction chamber are in a circulating motion state, so that the activated carbon particles can be fully and evenly contacted with the exhaust gas, thereby improving the processing efficiency and quality of the entire device, increasing the contact area between the activated carbon particles and the exhaust gas, and improving the utilization rate of the entire activated carbon particles.

[0023] In the present invention, the transmission rack installed at the bottom of the connecting rod can drive the transmission gear meshing with it to rotate, the transmission gear drives the rotating rod to rotate, the rotating rod drives the active bevel gear to rotate, the active bevel gear drives the driven bevel gear meshing with it to rotate, and the driven bevel gear drives the stirring rod to rotate inside the cleaning box, thereby achieving the effect of stirring and cleaning the activated carbon particles and improving the cleaning cleanliness.

[0024] In the present invention, the reciprocating push-pull piston rod can drive the piston plate to move back and forth inside the water supply chamber. When the piston plate is pulled, the clean water in the water storage chamber can be pumped into the water supply chamber from the water inlet hole. When the piston plate is pushed, the clean water pumped into the water supply chamber can be transported from the water supply pipe to the inside of the cleaning box, thereby achieving the effect of replenishing water inside the cleaning box and ensuring water for cleaning the activated carbon particles.

[0025] In the present invention, since the activated carbon particles entering the cleaning box are in a high-temperature state, when the activated carbon in the high-temperature state contacts the clean water inside the cleaning box, heat is exchanged with the water. During the heat exchange process, the water temperature rises and steam is generated. The steam inside the cleaning box can be pumped into the water supply chamber through the cooperation of the vacuum pump, the vacuum pipe and the air supply pipe, and then the steam is used to push the piston plate to move back and forth, thereby achieving an energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of a dust reduction device for metallurgical waste gas;

[0027] Figure 2 It is a three-dimensional structural schematic diagram of a dust reduction device for metallurgical waste gas;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of a dust reduction device for metallurgical waste gas;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of a dust suppression device for metallurgical waste gas;

[0030] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of a dust suppression device for metallurgical waste gas;

[0031] Figure 6 The schematic diagram of the structure of a gas blocking plate in a dust suppression device for metallurgical waste gas;

[0032] Figure 7 It is a structural schematic diagram of a spiral conveying auger in a dust reduction device for metallurgical waste gas;

[0033] Figure 8 It is a schematic diagram of the structure of a water supply box in a dust suppression device for metallurgical waste gas;

[0034] Fig. 9It is a schematic diagram of the cross-sectional structure of a return box in a dust suppression device for metallurgical waste gas;

[0035] Fig.10 for Figure 4 A magnified view of the structure at center A;

[0036] Fig.11 for Figure 4 A magnified view of the structure at point B.

[0037] Numbers in the figure: 1. Exhaust dust suppression box; 2. First dust filter plate; 3. Second dust filter plate; 4. Vertical plate; 5. Discharge box; 6. Lower air blocking plate; 7. Air supply channel; 8. Air supply pipe; 9. Air supply hole; 10. Material receiving plate; 11. Discharge port; 12. Movable plate; 13. Support spring; 14. Discharge channel; 15. Cleaning box; 16. Upper guide plate; 17. Upper travel switch; 18. Lower travel switch; 19. Exhaust channel; 20. Lower guide plate; 21. Mounting shell; 22. Rotating shaft; 23. Screw conveyor auger; 24. Driving motor; 25. Return channel; 26. Return box; 27. Stirring rod; 28. Driven bevel gear; 29. ​​Rotating rod; 3 0. Active bevel gear; 31. Transmission gear; 32. Cylinder; 33. Connecting rod; 34. Transmission rack; 35. Water supply tank; 36. Partition; 37. Water storage chamber; 38. Water supply chamber; 39. Water diversion hole; 40. One-way valve; 41. Piston plate; 42. Piston rod; 43. Return spring; 44. Air pump; 45. Air suction pipe; 46. Air supply pipe; 47. Air pressure sensor; 48. Exhaust pipe; 49. Spray pipe; 50. Water supply pipe; 51. First solenoid valve; 52. Second solenoid valve; 53. Weighing plate; 54. Lower rack; 55. Linkage gear; 56. Upper air blocking plate; 57. Upper rack; 58. Electric push rod; 59. Weighing sensor. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Embodiment 1, by Figure 1-11 Provided is a dust suppression device for metallurgical waste gas, comprising:

[0042] The exhaust gas dust reduction box 1 has an exhaust gas inlet and an exhaust gas outlet at both ends thereof for exhaust gas to enter and discharge, and an exhaust gas dust reduction unit for dust reduction of metallurgical exhaust gas is arranged inside thereof, and four supporting legs are arranged at the bottom thereof for contacting with the ground to support it;

[0043] The exhaust gas dust reduction unit comprises: a first dust filter plate 2 and a second dust filter plate 3 which are separated and parallel to each other and sealed and fixed in an exhaust gas dust reduction box 1; a dust reduction chamber is formed between the first dust filter plate 2 and the second dust filter plate 3; the dust reduction chamber is filled with activated carbon particles for adsorbing and dust reduction treatment of the exhaust gas; a feed port for placing activated carbon particles is provided on the exhaust gas dust reduction box 1 above the dust reduction chamber; a discharge port for discharging activated carbon particles is provided on the exhaust gas dust reduction box 1 below the dust reduction chamber; a return box 26 is fixedly installed on the top of the exhaust gas dust reduction box 1; the return box 26 cover is arranged above the feed port; a discharge box 5 is fixedly installed on the bottom of the exhaust gas dust reduction box 1; the discharge box 5 is located below the discharge port;

[0044] The exhaust gas dust reduction box 1 is also provided with a control component for controlling the activated carbon particles in the dust reduction chamber to be in a circulating motion state. The control component includes a receiving plate 10, a discharge port 11, a movable plate 12, a support spring 13, a discharge channel 14, a cleaning box 15, a mounting shell 21, a rotating shaft 22, a spiral conveying auger 23, a driving motor 24 and a return channel 25. The receiving plate 10 can be slidably arranged inside the discharge box 5, the discharge port 11 is through the lower part of the right side wall of the discharge box 5, a slide groove is arranged inside the discharge port 11, and the movable plate 12 is slidably arranged inside the slide groove. The support spring 13 is fixedly installed at the bottom end of the movable plate 12, and the discharge channel 14 is fixedly installed on the right side outer wall of the discharge box 5, and one end of the discharge channel 14 is connected to the discharge port 11 The cleaning box 15 is fixedly installed at the bottom of the discharge box 5, and the end of the discharge channel 14 away from the discharge port 11 is fixedly connected to the inner cavity of the cleaning box 15. The mounting shell 21 is fixedly installed inside the cleaning box 15. The mounting shell 21 has a straight cylindrical structure. The top of the mounting shell 21 passes through the exhaust gas dust reduction box 1 and extends to the upper part of the exhaust gas dust reduction box 1. The rotating shaft 22 is rotatably arranged inside the mounting shell 21. The spiral conveying auger 23 is fixedly installed on the outer wall of the rotating shaft 22. The driving motor 24 is fixedly installed on the top of the mounting shell 21, and the driving end of the driving motor 24 is fixedly connected to the top of the rotating shaft 22. The return channel 25 is fixedly installed on the outer wall of the upper part of the mounting shell 21, and the end of the return channel 25 away from the mounting shell 21 is fixedly connected to the inner cavity of the return box 26.

[0045] In a specific implementation, the metallurgical waste gas containing dust enters the waste gas dust reduction box 1 through the waste gas inlet, and then the waste gas is adsorbed and dusted by the activated carbon particles filled in the waste gas dust reduction unit arranged inside the waste gas dust reduction box 1, and then discharged from the waste gas outlet;

[0046] When the activated carbon particles adsorb and reduce dust on the exhaust gas, the activated carbon particles at the bottom of the exhaust gas dust reduction unit can be discharged from the discharge port into the interior of the discharge box 5, and the activated carbon particles discharged into the discharge box 5 fall on the receiving plate 10, and the receiving plate 10 moves downward due to the weight of the activated carbon particles. During the downward movement of the receiving plate 10, the movable plate 12 is pressed down to compress the supporting spring 13, so that the discharge port 11 can be opened. When the receiving plate 10 moves downward to below the discharge port 11, since its top surface has a certain inclination, the activated carbon particles gathered thereon will be discharged from the discharge port 11 into the discharge channel 14, and then discharged from the discharge channel 14 to the interior of the cleaning box 15. The activated carbon particles entering the cleaning box 15 will enter the interior of the mounting shell 21, and the rotating shaft 22 is driven to rotate by the driving motor 24. The rotating shaft 22 drives The dynamic spiral conveying auger 23 rotates, thereby being able to lift the activated carbon particles entering the mounting shell 21 upward, and the activated carbon particles lifted to the upper part can be discharged from the return channel 25 to the interior of the return box 26 through the return channel 25, and then transported from the feed port to the dust reduction chamber arranged inside the exhaust gas dust reduction box 1, so that the activated carbon particles filled in the dust reduction chamber are in a circulating motion state, thereby enabling the activated carbon particles to fully and evenly contact with the exhaust gas, thereby improving the processing efficiency and quality of the entire device, increasing the contact area between the activated carbon particles and the exhaust gas, and improving the utilization rate of the entire activated carbon particles. At the same time, the interior of the cleaning box 15 is filled with cleaning liquid, and the activated carbon particles entering the cleaning box 15 will clean the dust adsorbed on its surface under the action of the cleaning liquid, ensuring that the activated carbon particles can always remove dust from the exhaust gas well.

[0047] Specifically: filter holes for filtering exhaust gas are provided on the first dust filter plate 2 and the second dust filter plate 3, the filter holes provided on the first dust filter plate 2 are located on the lower half of the first dust filter plate 2, and the filter holes provided on the second dust filter plate 3 are located on the upper half of the second dust filter plate 3, and vertical plates 4 are staggered and separated inside the dust reduction chamber, one of the vertical plates 4 is fixedly connected to the inner bottom wall of the exhaust gas dust reduction box 1, and the other vertical plate 4 is fixedly connected to the inner top wall of the exhaust gas dust reduction box 1;

[0048] During specific implementation, when high-dust exhaust gas enters the exhaust dust reduction box 1 from the exhaust gas inlet, it will enter the dust reduction chamber from the filter holes set at the bottom of the first dust filter plate 2, and filter the high-dust exhaust gas through the first dust filter plate 2, so that the high-dust exhaust gas becomes low-dust exhaust gas. After entering the dust reduction chamber, the low-dust exhaust gas contacts the activated carbon particles filled therein, and the activated carbon particles adsorb the dust in the low-dust exhaust gas, so that the low-dust exhaust gas becomes low-dust exhaust gas, and then the low-dust exhaust gas passes through the filter holes set at the top of the second dust filter plate 3 and is discharged from the dust reduction chamber, so that the low-dust exhaust gas becomes low-dust exhaust gas, and then is discharged from the exhaust gas outlet to the outside of the exhaust dust reduction box 1, thereby achieving the effect of dust reduction for metallurgical waste gas. By setting the vertical plate 4 between the first dust filter plate 2 and the second dust filter plate 3, the travel of the dust-containing exhaust gas in the exhaust dust reduction box 1 can be increased, thereby increasing the filtration time of the dust-containing exhaust gas, thereby improving the filtration effect of the device.

[0049] Specifically: an upper guide plate 16 and a lower guide plate 20 are fixedly installed inside the cleaning box 15, the upper guide plate 16 is fixedly connected to the inner top wall of the cleaning box 15, the lower guide plate 20 is fixedly connected to the inner bottom wall of the cleaning box 15, and the upper guide plate 16 and the lower guide plate 20 are staggered and inclined;

[0050] In specific implementation, the upper guide plate 16 can guide the activated carbon particles entering the cleaning box 15 to the left side thereof, and the lower guide plate 20 can guide the activated carbon particles to the right side thereof, thereby limiting the travel of the activated carbon particles inside the cleaning box 15 and increasing the cleaning time.

[0051] Embodiment 2, by Figure 1-11 It is given that, on the basis of embodiment 1, it also includes an intermittent plugging component arranged at the lower part of the exhaust gas dust reduction box 1 for reducing the amount of exhaust gas escaping from the exhaust gas dust reduction box 1 during the circulation of activated carbon particles. The intermittent plugging component includes a lower air baffle plate 6, an air supply channel 7, an air supply pipe 8, an air supply hole 9, an upper stroke switch 17, a lower stroke switch 18, an exhaust channel 19, a cylinder 32 and a connecting rod 33. The lower air baffle plate 6 is slidably plugged into the bottom wall of the exhaust gas dust reduction box 1, the air supply channel 7 is penetrated and opened on the bottom wall of the exhaust gas dust reduction box 1, the air supply hole 9 is penetrated and opened on the lower air baffle plate 6, and the lower When the air blocking plate 6 closes the lower discharge port of the exhaust gas dust suppression box 1, the air supply hole 9 can be vertically symmetrical with the air supply channel 7, the air supply pipe 8 is fixedly installed on the bottom surface of the exhaust gas dust suppression box 1, the top of the air supply pipe 8 is connected with the air supply channel 7, and the bottom of the air supply pipe 8 is connected with the inner cavity of the discharge box 5. The upper stroke switch 17 is fixedly embedded and installed on the bottom surface of the lower air blocking plate 6, and the lower stroke switch 18 is fixedly installed on the inner side wall of the discharge box 5. The exhaust channel 19 is opened on the side wall of the discharge box 5. The cylinder 32 is fixedly installed on the lower surface of the exhaust gas dust suppression box 1, and the connecting rod 33 is fixedly installed in the middle of the bottom surface of the lower air blocking plate 6;

[0052] During specific implementation, when the lower air baffle plate 6 closes the lower discharge port of the exhaust gas dust reduction box 1, the air supply hole 9 can be vertically symmetrical with the air supply channel 7, and part of the gas inside the exhaust gas dust reduction box 1 will be discharged from the air supply channel 7 into the inside of the air supply pipe 8, and then enter the inside of the discharge box 5 through the air supply pipe 8, so that the air pressure inside the discharge box 5 increases, and the material receiving plate 10 is pushed vertically upward under the action of the air pressure. When the material receiving plate 10 contacts the upper stroke switch 17, the upper stroke switch 17 controls the retractable end of the cylinder 32 to be recovered, and the cylinder 32 pulls the connecting rod 33 to drive the lower air baffle plate 6 to slide, so that the discharge port is in an open state. As the activated carbon particles continue to fall, the material receiving plate 10 moves downward under the weight of the activated carbon particles. As the material receiving plate 10 continues to move downward, its bottom surface will contact the lower stroke switch 18, and the lower stroke switch 18 can control the extension of the retractable end of the cylinder 32, and the cylinder 32 pushes the connecting rod 33 to drive the lower air baffle plate 6 to slide, so that the discharge port is in a closed state.

[0053] Specifically: the return box 26 is provided with a reciprocating plugging assembly for reducing the amount of exhaust gas escaping from the exhaust dust reduction box 1 during the circulation of activated carbon particles. The reciprocating plugging assembly includes a weighing plate 53, a lower rack 54, a linkage gear 55, an upper air blocking plate 56, an upper rack 57, an electric push rod 58 and a weighing sensor 59. The weighing plate 53 is slidably arranged on the upper side wall of the exhaust dust reduction box 1, the lower rack 54 is fixedly mounted on the top surface of the weighing plate 53, and the linkage gear 55 rotates. The upper air blocking plate 56 is slidably arranged on the return box 26, and the upper air blocking plate 56 is located above the weighing plate 53. The upper rack 57 is fixedly installed on the bottom surface of the upper air blocking plate 56, and the lower rack 54 and the upper rack 57 are both meshed and connected with the linkage gear 55. The electric push rod 58 is fixedly installed on the top of the return box 26, and the telescopic end of the electric push rod 58 is fixedly connected with the upper air blocking plate 56. The weighing sensor 59 is installed on the top surface of the weighing plate 53;

[0054] During specific implementation, the activated carbon particles discharged into the return box 26 through the return channel 25 will fall on the top surface of the weighing plate 53. The activated carbon can be weighed by the weighing sensor 59 arranged on the top surface of the weighing plate 53. When the activated carbon particles reach a certain weight, the electric push rod 58 can pull the upper air blocking plate 56 to slide into the return box 26. When the upper air blocking plate 56 slides into the return box 26, the upper rack 57 on its bottom surface drives the linkage gear 55 to rotate, and the rotation of the linkage gear 55 drives the lower rack 54 to move horizontally, so that the weighing plate 53 can be pulled out from the inside of the return box 26. In the process of pulling out the weighing plate 53, the activated carbon particles accumulated on its top surface can enter the interior of the exhaust gas dust reduction box 1 from the feed port.

[0055] The intermittent plugging assembly and the reciprocating plugging assembly can reduce the amount of exhaust gas escaping from the exhaust gas dust reduction box 1 during the circulation of activated carbon particles.

[0056] Embodiment 3, by Figure 1-11 It is given that, on the basis of the first embodiment, a stirring assembly for stirring the activated carbon particles entering the cleaning box 15 is provided inside the cleaning box 15, and the stirring assembly includes a stirring rod 27, a driven bevel gear 28, a rotating rod 29, an active bevel gear 30, a transmission gear 31, a connecting rod 33 and a transmission rack 34; the stirring rod 27 is rotatably arranged inside the cleaning box 15, and a stirring blade is installed on the outer wall of the stirring rod 27 extending to one end of the inner wall of the cleaning box 15, the driven bevel gear 28 is fixedly installed on the outer end of the stirring rod 27, a cross beam plate is installed on the side wall of the cleaning box 15, the rotating rod 29 is rotatably installed on the cross beam plate, the active bevel gear 30 is fixedly installed on the bottom end of the rotating rod 29, the active bevel gear 30 is meshedly connected with the driven bevel gear 28, the transmission gear 31 is fixedly installed on the top end of the rotating rod 29, the transmission rack 34 is fixedly installed on the bottom end of the connecting rod 33, and the transmission rack 34 is meshedly connected with the transmission gear 31;

[0057] During specific implementation, when the cylinder 32 pushes the connecting rod 33 to drive the lower air blocking plate 6 to move, the transmission rack 34 installed at the bottom of the connecting rod 33 can drive the transmission gear 31 meshing with it to rotate, and the transmission gear 31 drives the rotating rod 29 to rotate, and the rotating rod 29 drives the active bevel gear 30 to rotate, and the active bevel gear 30 drives the driven bevel gear 28 meshing with it to rotate, and the driven bevel gear 28 drives the stirring rod 27 to rotate inside the cleaning box 15, thereby achieving the effect of stirring and cleaning the activated carbon particles and improving the cleaning cleanliness.

[0058] Specifically: A water supply tank 35 for storing clean water is also fixedly installed at the bottom of the cleaning box 15. A water supply assembly for supplying water to the inside of the cleaning box 15 is arranged on the water supply tank 35. The water supply assembly includes a partition 36, a piston plate 41, a piston rod 42, a return spring 43, a water supply pipe 50 and a first solenoid valve 51. The partition 36 is fixedly installed inside the water supply tank 35. The inner cavity of the water supply tank 35 is divided into a water storage chamber 37 and a water supply chamber 38 by the partition 36. A water diversion hole 39 connecting the water storage chamber 37 and the water supply chamber 38 is opened at the bottom of the partition 36. A one-way valve 40 is fixedly installed inside the water diversion hole 39. The piston plate 41 is slidably arranged in the water supply chamber 38. , a piston rod 42 is slidably arranged on the side wall of the water supply box 35, one end of the piston rod 42 extending to the inside of the water supply chamber 38 is fixedly connected to the side wall of the piston plate 41, a return spring 43 is sleeved on the outer wall of the piston rod 42, one end of the return spring 43 is fixedly connected to the piston plate 41, and the other end of the return spring 43 is fixedly connected to the inner wall of the water supply box 35, a water supply pipe 50 is fixedly installed on the side wall of the water supply box 35 at one end, and is communicated with the water supply chamber 38, and the other end of the water supply pipe 50 is fixedly installed on the side wall of the cleaning box 15, and is communicated with the inner cavity of the cleaning box 15, and a first solenoid valve 51 is fixedly installed on the water supply pipe 50;

[0059] During specific implementation, the reciprocating push-pull piston rod 42 can drive the piston plate 41 to move back and forth inside the water supply chamber 38. When the piston plate 41 is pulled, the clean water in the water storage chamber 37 can be pumped into the water supply chamber 38 from the water inlet hole 39. When the piston plate 41 is pushed, the clean water pumped into the water supply chamber 38 can be transported from the water supply pipe 50 to the inside of the cleaning box 15, thereby achieving the effect of replenishing water inside the cleaning box 15 and ensuring water for cleaning the activated carbon particles.

[0060] Specifically, an air pump 44 is fixedly mounted on the outer wall of the water supply box 35, and an air extraction pipe 45 and an air supply pipe 46 are connected to the air extraction pump 44. The end of the air extraction pipe 45 away from the air extraction pump 44 is connected to the inner cavity of the cleaning box 15, and the end of the air supply pipe 46 away from the air extraction pump 44 is connected to the inner cavity of the water supply chamber 38.

[0061] During specific implementation, since the activated carbon particles entering the cleaning box 15 are in a high-temperature state, when the high-temperature activated carbon contacts the clean water inside the cleaning box 15, heat is exchanged with the water. During the heat exchange process, the water temperature rises and steam is generated. The steam inside the cleaning box 15 can be pumped into the water supply chamber 38 through the cooperation of the vacuum pump 44, the vacuum pipe 45 and the air supply pipe 46, and then the steam is used to push the piston plate 41 to move back and forth, thereby achieving an energy-saving effect.

[0062] Specifically: the water supply tank 35 is also provided with a spray assembly for spraying dust reduction inside the exhaust gas dust reduction box 1, the spray assembly includes an air pressure sensor 47, an exhaust pipe 48, a spray pipe 49 and a second solenoid valve 52, the air pressure sensor 47 is fixedly installed on the water supply tank 35, and the detection end of the air pressure sensor 47 extends to the inside of the water supply chamber 38, one end of the exhaust pipe 48 extends to the inside of the exhaust gas dust reduction box 1, and the other end of the exhaust pipe 48 is connected to the inner cavity of the water supply chamber 38, the spray pipe 49 is fixedly installed on one end of the exhaust pipe 48 extending to the inside of the exhaust gas dust reduction box 1, and the second solenoid valve 52 is fixedly installed on the exhaust pipe 48.

[0063] During specific implementation, the pressure of the steam entering the water supply chamber 38 can be detected by the air pressure sensor 47. When the air pressure in the water supply chamber 38 exceeds the threshold value set by the air pressure sensor 47, the air pressure sensor 47 controls the second solenoid valve 52 to open, and the steam inside the water supply chamber 38 will enter the spray pipe 49 from the exhaust pipe 48 in a high-pressure state. The high-pressure steam entering the spray pipe 49 will be sprayed inside the exhaust gas dust reduction box 1. The water vapor liquefied into small water droplets can directly combine with the dust particles in the metallurgical exhaust gas, thereby achieving the effect of spraying dust reduction.

[0064] Specifically, there is a small gap between the outer wall of the spiral conveying auger 23 and the inner wall of the mounting shell 21 through which the activated carbon particles cannot pass, and micro-holes for drainage are formed through the end surface of the lower half of the spiral conveying auger 23 .

[0065] Working principle: When high-dust exhaust gas enters the exhaust gas dust reduction box 1 from the exhaust gas inlet, it will enter the dust reduction chamber from the filter hole set at the bottom of the first dust filter plate 2, and filter the high-dust exhaust gas through the first dust filter plate 2, so that the high-dust exhaust gas becomes low-dust exhaust gas. After the low-dust exhaust gas enters the dust reduction chamber, it contacts the activated carbon particles filled inside. The activated carbon particles adsorb the dust in the low-dust exhaust gas, so that the low-dust exhaust gas becomes low-dust exhaust gas, and then the low-dust exhaust gas passes through the filter hole set at the top of the second dust filter plate 3 to discharge the dust reduction chamber, so that the low-dust exhaust gas becomes low-dust exhaust gas, and then is discharged from the exhaust gas outlet to the outside of the exhaust dust reduction box 1, so as to achieve the effect of dust reduction for metallurgical exhaust gas. By setting the vertical plate 4 between the first dust filter plate 2 and the second dust filter plate 3, the travel of the dust-containing exhaust gas in the exhaust dust reduction box 1 can be increased, thereby increasing the filtering time of the dust-containing exhaust gas, thereby improving the filtering effect of the device.

[0066] When the activated carbon particles adsorb and reduce dust on the exhaust gas, the activated carbon particles at the bottom of the exhaust gas dust reduction unit can be discharged from the discharge port into the interior of the discharge box 5. The activated carbon particles discharged into the discharge box 5 fall on the receiving plate 10, and the receiving plate 10 moves downward due to the weight of the activated carbon particles. During the downward movement of the receiving plate 10, the movable plate 12 is pressed down to compress the supporting spring 13, so that the discharge port 11 can be opened. When the receiving plate 10 moves downward to below the discharge port 11, since its top surface has a certain inclination, the activated carbon particles gathered thereon will be discharged from the discharge port 11 into the discharge channel 14, and then discharged from the discharge channel 14 to the interior of the cleaning box 15, and the activated carbon entering the cleaning box 15 The particles will enter the interior of the mounting shell 21, and the rotating shaft 22 will be driven to rotate by the driving motor 24, and the rotating shaft 22 will drive the spiral conveying auger 23 to rotate, so that the activated carbon particles entering the mounting shell 21 can be lifted upward, and the activated carbon particles lifted to the upper part can be discharged from the return channel 25 to the interior of the return box 26 through the return channel 25, and then transported from the feed port to the dust reduction chamber provided in the exhaust gas dust reduction box 1, so that the activated carbon particles filled in the dust reduction chamber are in a circulating motion state, so that the activated carbon particles can be fully and evenly contacted with the exhaust gas, thereby improving the processing efficiency and quality of the entire device, increasing the contact area between the activated carbon particles and the exhaust gas, and improving the utilization rate of the entire activated carbon particles.

[0067] 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 reduction device for metallurgical waste gas, comprising: An exhaust gas dust reduction box (1) is provided with an exhaust gas inlet and an exhaust gas outlet at both ends thereof for exhaust gas to enter and discharge, an exhaust gas dust reduction unit for reducing dust on metallurgical exhaust gas is arranged inside the box, and four supporting legs are arranged at the bottom thereof for contacting with the ground to support the box; The waste gas dust reduction unit comprises: a first dust filter plate (2) and a second dust filter plate (3) which are separated and parallel to each other and sealed and fixed in a waste gas dust reduction box (1); a dust reduction chamber is formed between the first dust filter plate (2) and the second dust filter plate (3); the dust reduction chamber is filled with activated carbon particles for adsorbing and dust reduction treatment on waste gas; a feed inlet for placing activated carbon particles is provided on the waste gas dust reduction box (1) above the dust reduction chamber; a discharge outlet for discharging activated carbon particles is provided on the waste gas dust reduction box (1) below the dust reduction chamber; a return box (26) is fixedly installed on the top of the waste gas dust reduction box (1); the return box (26) cover is arranged above the feed inlet; a discharge box (5) is fixedly installed on the bottom of the waste gas dust reduction box (1); the discharge box (5) is located below the discharge outlet; The invention is characterized in that the exhaust gas dust reduction box (1) is also provided with a control component for controlling the activated carbon particles in the dust reduction chamber to be in a circulating motion state, the control component comprises a receiving plate (10), a discharge port (11), a movable plate (12), a support spring (13), a discharge channel (14), a cleaning box (15), a mounting shell (21), a rotating shaft (22), a spiral conveying auger (23), a driving motor (24) and a return channel (25), the receiving plate (10) can be slidably arranged inside the discharge box (5), the discharge port (11) penetrates through the lower part of the right side wall of the discharge box (5), a slide groove is arranged inside the discharge port (11), the movable plate (12) is slidably arranged inside the slide groove, the support spring (13) is fixedly mounted on the bottom end of the movable plate (12), the discharge channel (14) is fixedly mounted on the right side outer wall of the discharge box (5), and one end of the discharge channel (14) is connected to the discharge port (11). The cleaning box (15) is fixedly mounted on the bottom of the discharge box (5); one end of the discharge channel (14) away from the discharge port (11) is fixedly connected to the inner cavity of the cleaning box (15); the mounting shell (21) is fixedly mounted inside the cleaning box (15); the mounting shell (21) is a straight cylindrical structure; the top end of the mounting shell (21) passes through the exhaust gas dust reduction box (1) and extends to the upper part of the exhaust gas dust reduction box (1); the rotating shaft (22) is rotatably arranged inside the mounting shell (21); the spiral conveying auger (23) is fixedly mounted on the outer wall of the rotating shaft (22); the driving motor (24) is fixedly mounted on the top end of the mounting shell (21), and the driving end of the driving motor (24) is fixedly connected to the top end of the rotating shaft (22); the return channel (25) is fixedly mounted on the outer wall of the upper part of the mounting shell (21); one end of the return channel (25) away from the mounting shell (21) is fixedly connected to the inner cavity of the return box (26).

2. A dust suppression device for metallurgical waste gas according to claim 1, characterized in that: The first dust filter plate (2) and the second dust filter plate (3) are both provided with filter holes for filtering the exhaust gas, the filter holes provided on the first dust filter plate (2) are located on the lower half of the first dust filter plate (2), and the filter holes provided on the second dust filter plate (3) are located on the upper half of the second dust filter plate (3), and the interior of the dust removal chamber is also staggeredly divided with vertical plates (4), one of the vertical plates (4) is fixedly connected to the inner bottom wall of the exhaust gas dust removal box (1), and the other vertical plate (4) is fixedly connected to the inner top wall of the exhaust gas dust removal box (1).

3. The dust suppression device for metallurgical waste gas according to claim 1, characterized in that: An upper guide plate (16) and a lower guide plate (20) are fixedly installed inside the cleaning box (15); the upper guide plate (16) is fixedly connected to the inner top wall of the cleaning box (15); the lower guide plate (20) is fixedly connected to the inner bottom wall of the cleaning box (15); and the upper guide plate (16) and the lower guide plate (20) are arranged in a staggered and inclined manner.

4. The dust suppression device for metallurgical waste gas according to claim 1, characterized in that: It also includes an intermittent plugging component arranged at the lower part of the exhaust gas dust reduction box (1) for reducing the amount of exhaust gas escaping from the exhaust gas dust reduction box (1) during the circulation of activated carbon particles, the intermittent plugging component including a lower air blocking plate (6), an air supply channel (7), an air supply pipe (8), an air supply hole (9), an upper travel switch (17), a lower travel switch (18), an exhaust channel (19), a cylinder (32) and a connecting rod (33), the lower air blocking plate (6) is slidably plugged into the bottom wall of the exhaust gas dust reduction box (1), the air supply channel (7) is penetrated and opened on the bottom wall of the exhaust gas dust reduction box (1), the air supply hole (9) is penetrated and opened on the lower air blocking plate (6), and the lower air blocking plate (6) is connected to the exhaust gas dust reduction box (1) 1) When the lower discharge port is closed, the air supply hole (9) can be vertically symmetrical with the air supply channel (7), the air supply pipe (8) is fixedly installed on the bottom surface of the exhaust gas dust suppression box (1), the top end of the air supply pipe (8) is connected to the air supply channel (7), the bottom end of the air supply pipe (8) is connected to the inner cavity of the discharge box (5), the upper stroke switch (17) is fixedly embedded in the bottom surface of the lower air blocking plate (6), the lower stroke switch (18) is fixedly installed on the inner wall of the discharge box (5), the exhaust channel (19) is opened on the side wall of the discharge box (5), the cylinder (32) is fixedly installed on the lower surface of the exhaust gas dust suppression box (1), and the connecting rod (33) is fixedly installed in the middle of the bottom surface of the lower air blocking plate (6).

5. A dust suppression device for metallurgical waste gas according to claim 4, characterized in that: The return box (26) is provided with a reciprocating plugging assembly for reducing the amount of exhaust gas escaping from the exhaust gas dust reduction box (1) during the circulation of activated carbon particles. The reciprocating plugging assembly comprises a weighing plate (53), a lower rack (54), a linkage gear (55), an upper air blocking plate (56), an upper rack (57), an electric push rod (58) and a weighing sensor (59). The weighing plate (53) is slidably arranged on the upper side wall of the exhaust gas dust reduction box (1), the lower rack (54) is fixedly mounted on the top surface of the weighing plate (53), and the linkage gear (55) is rotatably arranged on the exhaust gas dust reduction box (1). The top of the dust suppression box (1), the upper air blocking plate (56) is slidably arranged on the return box (26), and the upper air blocking plate (56) is located above the weighing plate (53), the upper rack (57) is fixedly mounted on the bottom surface of the upper air blocking plate (56), the lower rack (54) and the upper rack (57) are both meshed with the linkage gear (55), the electric push rod (58) is fixedly mounted on the top of the return box (26), the telescopic end of the electric push rod (58) is fixedly connected to the upper air blocking plate (56), and the weighing sensor (59) is mounted on the top surface of the weighing plate (53).

6. A dust suppression device for metallurgical waste gas according to claim 4, characterized in that: The interior of the cleaning box (15) is provided with a stirring assembly for stirring the activated carbon particles entering the interior thereof, the stirring assembly comprising a stirring rod (27), a driven bevel gear (28), a rotating rod (29), a driving bevel gear (30), a transmission gear (31), a connecting rod (33) and a transmission rack (34); the stirring rod (27) is rotatably arranged inside the cleaning box (15), the stirring rod (27) extends to the outer wall of one end of the inner wall of the cleaning box (15) and a stirring blade is installed on the outer wall, the driven bevel gear (28) is fixed to the inner wall of the cleaning box (15) and the stirring blade is installed on the outer wall of the cleaning box (15). The driving bevel gear (30) is fixedly mounted on the outer end of the stirring rod (27); a cross beam is mounted on the side wall of the cleaning box (15); the rotating rod (29) is rotatably mounted on the cross beam; the driving bevel gear (30) is fixedly mounted on the bottom end of the rotating rod (29); the driving bevel gear (30) is meshingly connected with the driven bevel gear (28); the transmission gear (31) is fixedly mounted on the top end of the rotating rod (29); the transmission rack (34) is fixedly mounted on the bottom end of the connecting rod (33); the transmission rack (34) is meshingly connected with the transmission gear (31).

7. The dust suppression device for metallurgical waste gas according to claim 1, characterized in that: A water supply tank (35) for storing clean water is also fixedly installed at the bottom of the cleaning box (15). A water supply assembly for supplying water to the inside of the cleaning box (15) is arranged on the water supply tank (35). The water supply assembly comprises a partition (36), a piston plate (41), a piston rod (42), a return spring (43), a water supply pipe (50) and a first solenoid valve (51). The partition (36) is fixedly installed inside the water supply tank (35). The inner cavity of the water supply tank (35) is divided into a water storage chamber (37) and a water supply chamber (38) by the partition (36). A water inlet hole (39) connecting the water storage chamber (37) and the water supply chamber (38) is opened at the bottom of the partition (36). A one-way valve (40) is fixedly installed inside the water inlet hole (39). The piston plate (41) is slidably arranged in the water supply chamber ( 38), the piston rod (42) is slidably arranged on the side wall of the water supply box (35), one end of the piston rod (42) extending to the inside of the water supply chamber (38) is fixedly connected to the side wall of the piston plate (41), the return spring (43) is sleeved on the outer wall of the piston rod (42), one end of the return spring (43) is fixedly connected to the piston plate (41), the other end of the return spring (43) is fixedly connected to the inner wall of the water supply box (35), the water supply pipe (50) is fixedly installed on the side wall of the water supply box (35) at one end, and is connected to the water supply chamber (38), the other end of the water supply pipe (50) is fixedly installed on the side wall of the cleaning box (15), and is connected to the inner cavity of the cleaning box (15), and the first solenoid valve (51) is fixedly installed on the water supply pipe (50).

8. The dust suppression device for metallurgical waste gas according to claim 7, characterized in that: An air pump (44) is fixedly mounted on the outer wall of the water supply box (35), and an air suction pipe (45) and an air supply pipe (46) are connected to the air suction pump (44). One end of the air suction pipe (45) away from the air suction pump (44) is connected to the inner cavity of the cleaning box (15), and one end of the air supply pipe (46) away from the air suction pump (44) is connected to the inner cavity of the water supply chamber (38).

9. The dust suppression device for metallurgical waste gas according to claim 7, characterized in that: The water supply box (35) is also provided with a spray assembly for spraying dust inside the exhaust gas dust reduction box (1), and the spray assembly includes an air pressure sensor (47), an exhaust pipe (48), a spray pipe (49) and a second solenoid valve (52). The air pressure sensor (47) is fixedly mounted on the water supply box (35), and the detection end of the air pressure sensor (47) extends to the inside of the water supply chamber (38). One end of the exhaust pipe (48) extends to the inside of the exhaust gas dust reduction box (1), and the other end of the exhaust pipe (48) is connected to the inner cavity of the water supply chamber (38). The spray pipe (49) is fixedly mounted on one end of the exhaust pipe (48) extending to the inside of the exhaust gas dust reduction box (1), and the second solenoid valve (52) is fixedly mounted on the exhaust pipe (48).

10. The dust suppression device for metallurgical waste gas according to claim 1, characterized in that: There is a small gap between the outer peripheral wall of the spiral conveying auger (23) and the inner wall of the mounting shell (21) through which activated carbon particles cannot pass, and microholes for drainage are provided through the end surface of the lower half of the spiral conveying auger (23).

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