A heat treatment exhaust gas treatment device

Abstract

The present application belongs to the technical field of waste gas purification, and discloses a heat treatment waste gas treatment device, which comprises an industrial carburizing furnace and a centrifugal pipe. A convex cap is fixed between the top of the centrifugal pipe. A fixing sleeve is fixed to the inner top surface of the convex cap. The bottom of the fixing sleeve extends downward to the inside of the centrifugal pipe. An air inlet pipe is connected to the side of the centrifugal pipe close to the top edge. When the waste gas is introduced into the centrifugal pipe for separation, the air delivered to the inside of the centrifugal pipe is driven to rotate by a centrifugal driving device. Under the action of centrifugal force, the fine particulate matter suspended in the air is collected to the middle of the bottom of the centrifugal pipe. The fine particles can fall into the neutralizing solution in the inside of the conical disc. As the fine particles are absorbed by the neutralizing solution, the weight of the conical disc as a whole is increased, so that it slides downward to trigger the traction device to drive the switching assembly to switch the flow direction of the air flow through the filter cartridge, so that the filter cartridge can be cleaned.

Description

Technical Field

[0001] This invention relates to the field of waste gas purification technology, and in particular to a heat treatment waste gas treatment device. Background Technology

[0002] Currently, carburizing furnaces are widely used in industrial production. However, the exhaust gas emitted by carburizing furnaces during the production processes of steel, aluminum, organic chemicals, and pharmaceuticals will produce fine particles containing combustible organic matter and harmful substances such as sulfur dioxide. These toxic substances cannot be directly emitted and need to be treated before they can be released.

[0003] Currently, when treating exhaust gas, relying solely on filtration equipment to filter particulate matter in the gas is insufficient to address the fine particles that accumulate after filtration. Furthermore, when the density of fine particles in the air is high, they can easily clog the filter screen, affecting its filtration rate. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a heat treatment waste gas treatment device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a heat treatment waste gas treatment device, comprising an industrial carburizing furnace and centrifuge tubes, a convex cap fixed between the tops of the centrifuge tubes, a fixing sleeve fixed on the inner top surface of the convex cap, the bottom of the fixing sleeve extending downward into the interior of the centrifuge tubes, an air inlet pipe connected to one side of the centrifuge tubes near the top edge, a top cover provided between the tops of the industrial carburizing furnace, a conduit connected to the top cover, one end of the conduit connected to the air inlet pipe, a centrifugal drive device provided at the bottom of the fixing sleeve, and a switching component provided inside the fixing sleeve;

[0006] A floating cavity is formed between the inner walls of the centrifuge tubes near the bottom edge. A support base is provided between the inner walls of the floating cavity. A traction device is installed inside the support base. Marking lines are provided between the inner walls of the floating cavity near the bottom edge.

[0007] Preferably, a threaded ring is threaded between the inner walls of the floating cavity near the bottom edge, the top of the threaded ring is in contact with the bottom of the support, a collection hood is provided between the outer surfaces of the centrifuge tubes near the bottom edge, the bottom of the collection hood is connected to a bent tube, an annular sleeve is fitted on the outer surface of the bent tube, a liquid sensor is provided at the bottom of the annular sleeve, and the sensing part of the liquid sensor extends through to the inner bottom surface of the bent tube.

[0008] Preferably, the centrifugal drive device includes a fixed ring, which is installed at the bottom of the fixed sleeve. A drive ring is rotatably disposed on the outer surface of the fixed ring. Multiple blades are fixedly fixed at equal intervals along the circumferential direction on the outer surface of the drive ring. A filter cartridge is fixed between the bottom of the fixed ring and the inner wall, and the bottom of the filter cartridge is closed. The inner wall of the drive ring is flush with the inner wall of the fixed sleeve and the inner wall of the filter cartridge.

[0009] Preferably, a bending ring is fixed at the bottom of the drive ring near the edge of the outer surface. Multiple brush rods are fixed at equal intervals along the circumferential direction at the bottom of the bending ring. Multiple bristles are equally spaced on one side of each brush rod, and one end of each bristle slides against the outer surface of the filter cartridge.

[0010] Preferably, the switching component includes an inner sliding sleeve with a closed top. The inner sliding sleeve slides between the inner walls of the fixed sleeve. The outer surface of the fixed sleeve has a waist-shaped opening near the air inlet pipe. The other outer surface of the fixed sleeve is connected to an air outlet pipe near the top edge. One end of the air outlet pipe is connected to the inside of the fixed sleeve. A connecting pipe is connected to one side of the inner sliding sleeve near the top edge. The connecting pipe is located inside the waist-shaped opening, and one end of the connecting pipe is opposite to one end of the air inlet pipe.

[0011] Preferably, an air outlet is provided on the other side of the inner sliding sleeve near the bottom edge, the air outlet is opposite to one end of the air outlet pipe, and a through hole is provided at the top of the convex cap in the middle. A connecting rod is slidably arranged between the inner walls of the through hole, the bottom of the connecting rod slides through to the bottom of the filter cartridge, and the top of the connecting rod is in contact with the top of the inner sliding sleeve.

[0012] Preferably, the traction device includes a bridging column, a threaded groove is provided at the middle of the bottom of the support base, a threaded sleeve is threaded between the inner walls of the threaded groove, the bridging column is slidably disposed between the inner walls of the threaded sleeve, the top of the bridging column slides through to the top of the support base, an annular cavity is provided between the inner walls of the threaded sleeve near the top edge, a plurality of elastic paddles are fixed equidistantly along the circumferential direction on the inner top surface of the annular cavity, and the bottom of the plurality of elastic paddles extends to the bottom of the annular cavity.

[0013] Preferably, the outer surface of the bridging post is provided with an annular stepped groove, which is located above multiple elastic tabs. The arc surfaces of the multiple elastic tabs slide against the outer surface of the bridging post. The top of the bridging post is provided with multiple guide holes at equal intervals along the circumferential direction. The bottom of the multiple guide holes extends to the outer surface of the bridging post. The bottom end of the guide hole slides and seals against the inner wall of the threaded sleeve and is located below the annular cavity.

[0014] Preferably, a conical disk is slidably disposed between the inner walls of the floating cavity in the middle section. The inner bottom surface of the conical disk is inverted cone shape. An annular tube is disposed at the top of the conical disk near the outer edge of the surface. Multiple nozzles are equidistantly opened on the inner side of the annular tube along the circumferential direction. The top of the bridging column is threaded through to the inner bottom surface of the conical disk. The bottom of the connecting rod extends into the interior of the conical disk and is threadedly connected to the top of the bridging column.

[0015] Preferably, the bottom of the conical disc is fixed with tubes near both sides, the tops of the two tubes are connected to the inside of the annular tube, and the bottom of the two tubes are provided with bevels on both sides. The top of the support base is provided with one-way valves near both sides, and the two one-way valves are located directly below the tubes. The inner walls of both sides of the centrifuge tube are provided with openings that penetrate into the floating cavity. The two sides of the support base are fixed with high-pressure pipes that communicate with the one-way valves, and the two high-pressure pipes are located inside the side openings. The bottom of the conical disc is provided with an annular opening, and a slip ring is slidably arranged between the inner walls of the annular opening. A thin wire spring is fixed to the bottom of the slip ring, and the bottom of the thin wire spring is fixed to the top of the support base.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, when air containing fine particles is discharged from the inside of an industrial carburizing furnace, it is transported through a conduit to the inside of a centrifuge tube for separation. Inside the centrifuge tube, a centrifugal drive device rotates the air, causing the fine particulate matter suspended in the air to gather at the bottom center of the centrifuge tube under the action of centrifugal force. At the bottom, a large number of fine particles can fall into the neutralization solution inside the conical disk for absorption. As the fine particles are absorbed by the neutralization solution, the overall weight of the conical disk increases, causing it to slide downwards and triggering a traction device to drive the switching component to switch the airflow direction through the filter cartridge, thereby cleaning the filter cartridge.

[0018] 2. When the centrifugal drive device in this invention is working, the airflow enters the centrifugal tube from the air inlet pipe and flows downward, which will impact the inclined blades and drive the blades to rotate. When the blades rotate, the airflow inside the centrifugal tube will rotate, thereby generating centrifugal force. Under the action of centrifugal force, the fine particles in the airflow will gather towards the middle of the bottom of the airflow vortex.

[0019] 3. When the traction device of this invention is working, as fine particles are deposited, the total weight inside the conical disk increases. As the weight of the conical disk increases, it will slowly slide downwards, causing the thin wire spring to contract and driving the bridging column to slide downwards towards the threaded sleeve. During the sliding process, when the bottom of multiple elastic paddles comes into contact with the bottom slope of the annular stepped groove, the elastic force of the elastic paddles causes the bottom of the elastic paddles to engage in the middle part of the annular stepped groove, limiting the bridging column. During the pulling process, the connecting rod will slide downwards synchronously. At this time, the bottom opening of the guide hole on the bridging column will slide to the bottom of the support base, allowing the neutralized solution after the conical disk absorbs a large number of fine particles to be discharged into the collection hood through the guide hole.

[0020] 4. When the switching component is working in this invention, when the connecting rod slides down, it will simultaneously drive the inner sliding sleeve to slide down. At this time, the connecting pipe will be connected to the air inlet pipe, and the air outlet will slide to the bottom of the air outlet pipe. One end of the air outlet pipe will be in contact with the outer surface of the inner sliding sleeve to seal the air outlet pipe. At this time, when the airflow enters the centrifuge tube through the air inlet pipe, it will enter the inner sliding sleeve through the connecting pipe and then flow out from the inside of the filter cartridge to the outside. When it flows out, it can flush out the dust on the filter cartridge in the opposite direction and clean the filter cartridge. Attached Figure Description

[0021] Figure 1 This invention provides a front-view three-dimensional structural schematic diagram of a heat treatment waste gas treatment device;

[0022] Figure 2 This invention provides a front-view three-dimensional structural diagram of a centrifuge tube in a heat treatment waste gas treatment device;

[0023] Figure 3 This invention provides a three-dimensional cross-sectional view of one side of a centrifuge tube in a heat treatment waste gas treatment device.

[0024] Figure 4 This invention provides a three-dimensional cross-sectional view of the other side of a centrifuge tube in a heat treatment waste gas treatment device.

[0025] Figure 5 This invention provides a partial cross-sectional three-dimensional structural schematic diagram of a centrifuge tube in a heat treatment waste gas treatment device;

[0026] Figure 6 This invention provides a cross-sectional three-dimensional structural diagram of a conical disk and a support base in a heat treatment waste gas treatment device.

[0027] Figure 7 This invention provides a cross-sectional three-dimensional structural diagram of a threaded sleeve in a heat treatment waste gas treatment device.

[0028] Figure 8 For the present invention Figure 3 A magnified view of a portion of point A in the middle.

[0029] In the diagram: 1. Industrial carburizing furnace; 2. Top cover; 3. Guide tube; 4. Centrifuge tube; 5. Collection hood; 6. Bending tube; 7. Inlet pipe; 8. Outlet pipe; 9. Annular sleeve; 10. Liquid sensor; 11. Side port; 12. High-pressure pipe; 13. Floating chamber; 14. Conical disk; 15. Annular tube; 16. Nozzle; 17. Support base; 18. Threaded ring; 19. Marking line; 20. Threaded groove; 21. Bridging post; 22. Threaded sleeve; 23. Flow guide hole; 24. Insert 25. Tube; 26. Twisted joint; 27. Fine wire spring; 28. Slip ring; 29. ​​Annular cavity; 30. Elastic lever; 31. Annular stepped groove; 32. One-way valve; 33. Annular opening; 34. Convex cap; 35. Fixing sleeve; 36. Waist-shaped opening; 37. Connecting pipe; 38. Inner sliding sleeve; 39. Air outlet; 40. Fixing ring; 41. Drive ring; 42. Blade; 43. Bending ring; 44. Brush rod; 45. Brush bristles; 46. Filter cartridge; 47. Connecting rod; 48. Through-hole. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-8 The present invention provides a technical solution: a heat treatment waste gas treatment device, including an industrial carburizing furnace 1 and a centrifuge tube 4. A convex cap 33 is fixed between the tops of the centrifuge tube 4. A fixing sleeve 34 is fixed on the inner top surface of the convex cap 33. The bottom of the fixing sleeve 34 extends downward into the interior of the centrifuge tube 4. An air inlet pipe 7 is connected to one side of the centrifuge tube 4 near the top edge. A top cover 2 is provided between the tops of the industrial carburizing furnace 1. A conduit 3 is connected to the top cover 2. One end of the conduit 3 is connected to the air inlet pipe 7. A centrifugal drive device is provided at the bottom of the fixing sleeve 34. A switching component is provided inside the fixing sleeve 34.

[0032] A floating cavity 13 is provided between the inner walls of the centrifuge tube 4 near the bottom edge. A support seat 17 is provided between the inner walls of the floating cavity 13. A traction device is provided inside the support seat 17. A marking line 19 is provided between the inner walls of the floating cavity 13 near the bottom edge. A threaded ring 18 is threaded between the inner walls of the floating cavity 13 near the bottom edge. The top of the threaded ring 18 fits against the bottom of the support seat 17. A collection cover 5 is provided between the outer surfaces of the centrifuge tube 4 near the bottom edge. A bent tube 6 is connected to the bottom of the collection cover 5. An annular sleeve 9 is fitted onto the outer surface of the bent tube 6. A liquid sensor 10 is provided at the bottom of the annular sleeve 9. The sensing part of the liquid sensor 10 extends through to the inner bottom surface of the bent tube 6.

[0033] The effect achieved is that when air containing fine particles is discharged from the industrial carburizing furnace 1, it is transported through the conduit 3 to the centrifuge tube 4 for separation. Inside the centrifuge tube 4, the air transported to the centrifuge tube 4 is centrifuged and rotated by a centrifugal drive device. Under the action of centrifugal force, the fine particulate matter suspended in the air is caused to gather at the bottom center of the centrifuge tube 4. At the bottom, a large number of fine particles can fall into the neutralization solution inside the conical disk 14 for absorption. The air located above the centrifuge tube 4 is filtered through the filter cartridge 45 and discharged from the air outlet pipe 8. As the fine particles are absorbed by the neutralization solution, the overall weight of the conical disk 14 increases, causing it to slide downwards. When sliding downwards, the traction device is triggered to drive the switching component, which switches the airflow direction through the filter cartridge 45, so that the filter cartridge 45 can be cleaned.

[0034] like Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the centrifugal drive device includes a fixed ring 39, which is installed at the bottom of a fixed sleeve 34. A drive ring 40 is rotatably mounted on the outer surface of the fixed ring 39. Multiple blades 41 are fixedly and equidistantly on the outer surface of the drive ring 40 along the circumferential direction. A filter cartridge 45 is fixed near the inner wall of the bottom of the fixed ring 39, and the bottom of the filter cartridge 45 is closed. The inner wall of the drive ring 40 is flush with the inner wall of the fixed sleeve 34 and the inner wall of the filter cartridge 45. A bending ring 42 is fixed near the edge of the outer surface of the bottom of the drive ring 40. Multiple brush rods 43 are fixedly and equidistantly on the bottom of the bending ring 42 along the circumferential direction. Multiple bristles 44 are equidistantly arranged on one side of each of the multiple brush rods 43. One end of each of the multiple bristles 44 slides against the outer surface of the filter cartridge 45.

[0035] The effect achieved is as follows: In the initial stage, the conical disk 14 stores a certain amount of neutralizing solution, and the annular tube 15 is located on the inner top surface of the floating cavity 13. At this time, the inner sliding sleeve 37 is located on the inner top surface of the fixed sleeve 34, and one end of the connecting tube 36 is in contact with the inner wall of the convex cap 33, forming a closed shape. The air outlet 38 is connected to the air outlet pipe 8. When the airflow enters the centrifuge tube 4 from the air inlet pipe 7 and flows downward, it will impact the inclined blades 41, thereby driving the blades 41 to rotate. When the blades 41 rotate, the airflow inside the centrifuge tube 4 will be affected. The airflow rotates, generating centrifugal force. Under the action of centrifugal force, fine particles in the airflow gather at the bottom center of the airflow vortex. There are fewer fine particles in the air at the upper filter cartridge 45, which facilitates filtration by the filter cartridge 45. When the blade 41 rotates, it drives the drive ring 40 to rotate, which in turn drives the bending ring 42 to rotate. This causes the bristles 44 on the multiple brush rods 43 to rotate around the outer surface of the filter cartridge 45, brushing off the fine particles filtered on the outer surface of the filter cartridge 45. Combined with the centrifugal force of the airflow rotation, the brushed-off fine particles are concentrated at the bottom of the airflow vortex.

[0036] like Figure 3 , Figure 4 and Figure 8 As shown, the switching assembly includes an inner sliding sleeve 37, the top of which is closed. The inner sliding sleeve 37 slides between the inner walls of the fixed sleeve 34. The outer surface of the fixed sleeve 34 near the air inlet pipe 7 has a waist-shaped opening 35. The other outer surface of the fixed sleeve 34 near the top edge is connected to an air outlet pipe 8. One end of the air outlet pipe 8 is connected to the inside of the fixed sleeve 34. One side of the inner sliding sleeve 37 near the top edge is connected to a connecting pipe 36. The connecting pipe 36 is located inside the waist-shaped opening 35, and one end of the connecting pipe 36 is opposite to one end of the air inlet pipe 7. The other side of the inner sliding sleeve 37 near the bottom edge has an air outlet 38, which is opposite to one end of the air outlet pipe 8. The top of the convex cap 33 has a through-hole 47 in the middle. A connecting rod 46 is slidably arranged between the inner walls of the through-hole 47. The bottom of the connecting rod 46 slides through to the bottom of the filter cartridge 45, and the top of the connecting rod 46 is in contact with the top of the inner sliding sleeve 37.

[0037] The effect achieved is that when the connecting rod 46 slides downward, it will simultaneously drive the inner sliding sleeve 37 to slide downward. At this time, the connecting pipe 36 will be connected to the air inlet pipe 7, and the air outlet 38 will slide to the bottom of the air outlet pipe 8. One end of the air outlet pipe 8 will be in contact with the outer surface of the inner sliding sleeve 37 to seal the air outlet pipe 8. When the airflow enters the centrifuge tube 4 through the air inlet pipe 7, it will enter the inner sliding sleeve 37 through the connecting pipe 36 and then flow out from the inside of the filter cartridge 45 to the outside. When it flows out, it can flush out the dust on the filter cartridge 45 in the opposite direction and clean the filter cartridge 45. At the same time, the airflow after flushing out the filter cartridge 45 will be discharged through the guide hole 23 along with the neutralization solution inside the centrifuge tube 4. When the airflow after flushing out the filter cartridge 45 is discharged through the guide hole 23, it will exert downward pressure on the neutralization solution inside the conical disk 14 and can also accelerate the discharge of the neutralization solution.

[0038] like Figure 3 , Figure 6 and Figure 7As shown, the traction device includes a bridging column 21. A threaded groove 20 is formed at the center of the bottom of the support base 17. A threaded sleeve 22 is threaded between the inner walls of the threaded groove 20. The bridging column 21 is slidably disposed between the inner walls of the threaded sleeve 22. The top of the bridging column 21 slides through to the top of the support base 17. An annular cavity 28 is formed near the top edge between the inner walls of the threaded sleeve 22. Multiple elastic tabs 29 are equidistantly fixed along the circumferential direction on the inner top surface of the annular cavity 28. The bottoms of the multiple elastic tabs 29 extend to the bottom of the annular cavity 28. The bridging column 21... An annular stepped groove 30 is formed on the outer surface of the bridging post 21. The annular stepped groove 30 is located above multiple elastic tabs 29. The arc surfaces of the multiple elastic tabs 29 slide against the outer surface of the bridging post 21. Multiple guide holes 23 are equidistantly formed at the top of the bridging post 21 along the circumferential direction. The bottom of the multiple guide holes 23 extends to the outer surface of the bridging post 21. The bottom end of the guide holes 23 slides and seals against the inner wall of the threaded sleeve 22 and is located below the annular cavity 28. A conical disk 14 is slidably arranged in the middle section between the inner walls of the floating cavity 13. The inner bottom surface of the conical disk 14 is inverted conical. The conical disc 14 has an annular tube 15 near the outer edge of its top surface. Multiple nozzles 16 are evenly spaced along the circumference of the inner side of the annular tube 15. The top of the bridging post 21 is threaded through to the inner bottom surface of the conical disc 14. The bottom of the connecting rod 46 extends into the interior of the conical disc 14 and is threaded to the top of the bridging post 21. Inserted tubes 24 are fixed to the bottom of the conical disc 14 near both sides. The tops of the two inserted tubes 24 connect to the interior of the annular tube 15. Both sides of the bottom of the two inserted tubes 24 have bevels 25. The top of the support base 17 is near... One-way valves 31 are provided at both sides of the edge. The two one-way valves 31 are located directly below the insertion tube 24. The inner walls of both sides of the centrifuge tube 4 are provided with openings that extend into the floating cavity 13. High-pressure pipes 12 that communicate with the one-way valves 31 are fixed on both sides of the support base 17. The two high-pressure pipes 12 are located inside the side opening 11. The bottom of the conical disk 14 is provided with an annular opening 32. A slip ring 27 is slidably arranged between the inner walls of the annular opening 32. A thin wire spring 26 is fixed at the bottom of the slip ring 27. The bottom of the thin wire spring 26 is fixed to the top of the support base 17.

[0039] The effect is that fine particles at the bottom of the airflow vortex come into contact with the neutralizing solution in large quantities, causing them to sink into the neutralizing solution. As the fine particles settle, the total weight inside the conical disk 14 increases. As the weight of the conical disk 14 increases, it slowly slides downwards, causing the thin wire spring 26 to contract. This, in turn, causes the bridging post 21 to slide downwards towards the threaded sleeve 22. During this sliding process, when the bottoms of multiple elastic tabs 29 contact the bottom inclined surface of the annular trapezoidal groove 30, the elastic force of the elastic tabs 29 causes the bottoms of the elastic tabs 29 to be pushed towards the axis of the bridging post 21. Combined with the action of the inclined surface inside the annular trapezoidal groove 30, the bridging post 21 is pulled downwards instantaneously, causing the bottoms of the elastic tabs 29 to engage in the middle part of the annular trapezoidal groove 30, thus limiting the bridging post 21. At this time, the insertion tube 24... The bottom of the centrifuge tube 4 is inserted into a one-way valve 31. Once the one-way valve 31 is open, the external pipeline for delivering the neutralizing solution is connected to the high-pressure pipe 12. The neutralizing solution can then enter the insertion tube 24 through the one-way valve 31 and finally enter the annular pipe 15, from which it is sprayed out from the nozzle 16 into the conical disc 14 to replace the solution inside the conical disc 14. During the pulling process, the connecting rod 46 will slide downwards synchronously. At this time, the bottom opening of the guide hole 23 on the bridging column 21 will slide to the bottom of the support seat 17, allowing the neutralizing solution inside the conical disc 14, after absorbing a large number of fine particles, to be discharged into the collection hood 5 through the guide hole 23 and finally discharged through the bent pipe 6. During the discharge process, when the liquid sensor 10 detects fluid flowing through the bent pipe 6, it will issue an alarm to remind people to maintain and replace the internal components of the centrifuge tube 4.

[0040] Working Principle: When using this device, air mixed with fine particles is discharged from the industrial carburizing furnace 1 and transported through the conduit 3 to the centrifuge tube 4 for separation. Initially, the conical disk 14 inside the centrifuge tube 4 stores a certain amount of neutralizing solution, and the annular tube 15 is located on the top surface of the floating chamber 13. At this time, the inner sliding sleeve 37 is located on the top surface of the fixed sleeve 34, and one end of the connecting pipe 36 is fitted against the inner wall of the convex cap 33, forming a closed shape. The air outlet 38 is connected to the air outlet pipe 8. When the airflow enters the centrifuge tube 4 from the inlet pipe 7 and flows downwards, it impacts the inclined blades 41, causing them to rotate. The rotation of the blades 41 causes the airflow inside the centrifuge tube 4 to rotate, thereby generating centrifugal force. The centrifugal force causes fine particles in the airflow to gather towards the center of the bottom of the airflow vortex. The air at the upper filter cartridge 45 contains fewer fine particles, facilitating filtration. When the blades 41 rotate, they drive the drive ring 40 to rotate, which in turn drives the bending ring 42 to rotate. This causes the bristles 44 on the multiple brush rods 43 to rotate around the outer surface of the filter cartridge 45, brushing off the fine particles filtered from the outer surface. Combined with the centrifugal force of the rotating airflow, the brushed-off fine particles concentrate at the bottom of the airflow vortex. At the bottom of the airflow vortex, a large number of fine particles come into contact with the neutralizing solution, causing them to sink into the neutralizing solution. As the fine particles accumulate, the total weight inside the conical disk 14 increases. With the increased weight of the conical disk 14, it slowly slides downwards, causing... As the thin wire spring 26 contracts, it drives the bridging post 21 to slide downwards towards the threaded sleeve 22. During this sliding process, when the bottoms of multiple elastic tabs 29 contact the bottom inclined surface of the annular stepped groove 30, the elastic force of the elastic tabs 29 causes the bottoms of the elastic tabs 29 to move towards the axis of the bridging post 21. Combined with the action of the inclined surface inside the annular stepped groove 30, the bridging post 21 is pulled downwards instantaneously, causing the bottoms of the elastic tabs 29 to engage in the middle part of the annular stepped groove 30, thus limiting the bridging post 21. At this time, the bottom of the insertion tube 24 will be inserted into the one-way valve 31, opening the one-way valve 31. After the external pipeline for conveying the neutralizing solution is connected to the high-pressure pipe 12, the neutralizing solution can enter the insertion tube 24 through the one-way valve 31 and finally enter the annular pipe 15. The solution inside the centrifuge tube 4 is sprayed from nozzle 16 into the conical disk 14, replacing the solution inside the conical disk 14. During the pulling process, the connecting rod 46 slides downwards synchronously. At this time, the bottom opening of the guide hole 23 on the bridging column 21 slides below the support seat 17, allowing the neutralized solution after absorbing a large number of fine particles inside the conical disk 14 to be discharged into the collection hood 5 through the guide hole 23, and finally discharged through the bent tube 6. During the discharge process, when the liquid sensor 10 detects fluid flowing inside the bent tube 6, it will sound an alarm to remind people to maintain and replace the inside of the centrifuge tube 4. When the connecting rod 46 slides downwards, it will synchronously drive the inner sliding sleeve 37 to slide downwards. At this time, the connecting pipe 36 will be connected to the air inlet pipe 7, and the air outlet 38 will slide below the air outlet pipe 8.One end of the outlet pipe 8 is sealed by fitting against the outer surface of the inner sliding sleeve 37. When the airflow enters the centrifuge tube 4 through the inlet pipe 7, it then enters the inner sliding sleeve 37 through the connecting pipe 36, and flows out from the inside of the filter cartridge 45. This outflow washes away dust from the filter cartridge 45, cleaning it. Simultaneously, the airflow after washing out of the filter cartridge 45, along with the neutralization solution, is discharged through the guide hole 23 inside the centrifuge tube 4. As the airflow exits through the guide hole 23, it exerts downward pressure on the neutralization solution inside the conical disk 14, further accelerating the discharge of the neutralization solution.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat treatment waste gas treatment device, characterized in that, The system includes an industrial carburizing furnace (1) and a centrifuge tube (4). A convex cap (33) is fixed between the tops of the centrifuge tube (4). A fixing sleeve (34) is fixed on the inner top surface of the convex cap (33). The bottom of the fixing sleeve (34) extends downward into the interior of the centrifuge tube (4). An air inlet pipe (7) is connected to one side of the centrifuge tube (4) near the top edge. A top cover (2) is provided between the tops of the industrial carburizing furnace (1). A conduit (3) is connected to the top cover (2). One end of the conduit (3) is connected to the air inlet pipe (7). A centrifugal drive device is provided at the bottom of the fixing sleeve (34). A switching component is provided inside the fixing sleeve (34). A floating cavity (13) is provided between the inner walls of the centrifuge tube (4) near the bottom edge. A support seat (17) is provided between the inner walls of the floating cavity (13). A traction device is provided inside the support seat (17). A marking line (19) is provided between the inner walls of the floating cavity (13) near the bottom edge. The switching assembly includes an inner sliding sleeve (37). The top of the inner sliding sleeve (37) is closed. The inner sliding sleeve (37) slides between the inner walls of the fixed sleeve (34). The outer surface of the fixed sleeve (34) is provided with a waist-shaped opening (35) near the air inlet pipe (7). The other outer surface of the fixed sleeve (34) is connected to an air outlet pipe (8) near the top edge. One end of the air outlet pipe (8) is connected to the inside of the fixed sleeve (34). The inner sliding sleeve (37) is connected to a connecting pipe (36) near the top edge. The connecting pipe (36) is located inside the waist-shaped opening (35), and one end of the connecting pipe (36) is opposite to one end of the air inlet pipe (7). The traction device includes a bridging column (21), and a threaded groove (20) is provided at the middle of the bottom of the support base (17). A threaded sleeve (22) is threaded between the inner walls of the threaded groove (20). The bridging column (21) is slidably disposed between the inner walls of the threaded sleeve (22). The top of the bridging column (21) slides through to the top of the support base (17). An annular cavity (28) is provided between the inner walls of the threaded sleeve (22) near the top edge. Multiple elastic paddles (29) are fixed at equal intervals along the circumferential direction on the inner top surface of the annular cavity (28). The bottom of the multiple elastic paddles (29) extends to the bottom of the annular cavity (28).

2. The heat treatment waste gas treatment device according to claim 1, characterized in that: A threaded ring (18) is threaded between the inner walls of the floating cavity (13) near the bottom edge. The top of the threaded ring (18) fits against the bottom of the support base (17). A collection cover (5) is provided between the outer surfaces of the centrifuge tube (4) near the bottom edge. A bent tube (6) is connected to the bottom of the collection cover (5). An annular sleeve (9) is fitted on the outer surface of the bent tube (6). A liquid sensor (10) is provided at the bottom of the annular sleeve (9). The sensing part of the liquid sensor (10) extends through to the inner bottom surface of the bent tube (6).

3. The heat treatment waste gas treatment device according to claim 1, characterized in that: The centrifugal drive device includes a fixed ring (39), which is installed at the bottom of a fixed sleeve (34). A drive ring (40) is rotatably provided on the outer surface of the fixed ring (39). Multiple blades (41) are fixed at equal intervals along the circumferential direction on the outer surface of the drive ring (40). A filter cylinder (45) is fixed between the bottom of the fixed ring (39) and the inner wall. The bottom of the filter cylinder (45) is closed. The inner wall of the drive ring (40) is flush with the inner wall of the fixed sleeve (34) and the inner wall of the filter cylinder (45).

4. The heat treatment waste gas treatment device according to claim 3, characterized in that: A bending ring (42) is fixed at the bottom of the drive ring (40) near the edge of the outer surface. Multiple brush rods (43) are fixed at equal intervals along the circumferential direction at the bottom of the bending ring (42). Multiple bristles (44) are equally spaced on one side of each of the multiple brush rods (43). One end of each of the multiple bristles (44) slides and adheres to the outer surface of the filter cartridge (45).

5. The heat treatment waste gas treatment device according to claim 4, characterized in that: An air outlet (38) is provided on the other side of the inner sliding sleeve (37) near the bottom edge. The air outlet (38) is opposite to one end of the air outlet pipe (8). A through-hole (47) is provided at the top of the convex cap (33) in the middle. A connecting rod (46) is slidably arranged between the inner walls of the through-hole (47). The bottom of the connecting rod (46) slides through to the bottom of the filter cartridge (45), and the top of the connecting rod (46) is in contact with the top of the inner sliding sleeve (37).

6. The heat treatment waste gas treatment device according to claim 5, characterized in that: The outer surface of the bridging post (21) is provided with an annular stepped groove (30), which is located above a plurality of elastic paddles (29). The arc surfaces of the plurality of elastic paddles (29) slide against the outer surface of the bridging post (21). The top of the bridging post (21) is provided with a plurality of guide holes (23) at equal intervals along the circumferential direction. The bottom of the plurality of guide holes (23) extends to the outer surface of the bridging post (21). The bottom end of the guide hole (23) slides and seals against the inner wall of the threaded sleeve (22) and is located below the annular cavity (28).

7. The heat treatment waste gas treatment device according to claim 6, characterized in that: A conical disk (14) is slidably disposed between the inner walls of the floating cavity (13) in the middle section. The inner bottom surface of the conical disk (14) is inverted cone shape. An annular tube (15) is disposed near the outer edge of the top of the conical disk (14). Multiple nozzles (16) are equidistantly opened on the inner side of the annular tube (15) along the circumferential direction. The top of the bridging column (21) is threaded through to the inner bottom surface of the conical disk (14). The bottom of the connecting rod (46) extends to the interior of the conical disk (14) and is threaded to the top of the bridging column (21).

8. The heat treatment waste gas treatment device according to claim 7, characterized in that: The conical disc (14) has two insertion tubes (24) fixed at the bottom near the two side edges. The tops of the two insertion tubes (24) are connected to the inside of the annular tube (15). The bottom sides of the two insertion tubes (24) are provided with bevels (25). The top of the support base (17) is provided with one-way valves (31) near the two side edges. The two one-way valves (31) are located directly below the insertion tubes (24). The inner walls of the centrifuge tube (4) are provided with openings that penetrate to the floating cavity (13). Inside the support base (17), high-pressure pipes (12) connected to one-way valves (31) are fixed on both sides of the support base (17). The two high-pressure pipes (12) are located inside the side opening (11). The bottom of the conical disc (14) is provided with an annular opening (32). A slip ring (27) is slidably arranged between the inner walls of the annular opening (32). A thin wire spring (26) is fixed at the bottom of the slip ring (27). The bottom of the thin wire spring (26) is fixed at the top of the support base (17).

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