Waste gas treatment device for metal smelting

Abstract

The invention relates to the technical field of metallurgical engineering, and provides a metal smelting waste gas treatment device which is characterized in that a motor is arranged on the outer surface of a water tank, a treatment chamber with the bottom end extending into the water tank is fixed to the top of the water tank, and a third guide plate, two second guide plates and a first guide plate with the bottom being an arc are fixedly connected to the inner top of the treatment chamber; two guide plates are fixedly connected to the inner wall of the water tank, and two hollow rotating shafts concentric with circular arcs at the bottoms of the first guide plates penetrate through one side of the water tank, so that stable vortexes are formed, water spray and waste gas are effectively guided, the water spray and the waste gas are uniformly distributed, the contact area and the contact time of the water spray and the waste gas are ensured, and the waste gas purification efficiency is improved; and meanwhile, industrial water enters the flared pipe immediately after being sprayed out of the spraying holes, no extra straight pipe section is used for transition, the length of the flared pipe is shorter, and occupied space is reduced.

Description

Technical Field

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

[0002] Most of the waste gas treatment devices used in metal smelting are cyclone treatment devices or water-jet treatment devices, which can remove harmful substances such as particulate matter, sulfur dioxide, nitrogen oxides, carbon monoxide and volatile organic compounds in the waste gas, reduce harm to the environment and human health, and ensure that waste gas emissions meet environmental protection standards.

[0003] The existing water-jet treatment device creates splashes by causing the exhaust gas to hit the water surface, and then guides the splashes and the exhaust gas to mix to form a vortex through the guidance of a guide plate. At the same time, the splashes contain chemicals, which then carry the chemicals to contact the exhaust gas to remove harmful substances in the exhaust gas.

[0004] However, when the water splash and exhaust gas form a vortex, the guide plate does not have a dynamic adjustment function and cannot be adjusted in real time according to the changes in the air flow and water flow, resulting in unstable vortex. In addition, the water splash and exhaust gas cannot be effectively guided, resulting in the water splash and exhaust gas being unable to form a stable vortex. The unstable vortex prevents the bubbles from being evenly dispersed, causing the bubbles to be concentrated in certain areas, reducing the total gas-liquid contact area.

[0005] The reduction in the total gas-liquid contact area means that the pollutants in the exhaust gas have fewer opportunities to come into contact with water, resulting in a decrease in purification efficiency, which in turn reduces the overall effectiveness of the equipment, affecting production efficiency and environmental performance. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide a waste gas treatment device for metal smelting to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a waste gas treatment device for metal smelting, comprising: a water pool, a motor is arranged on the outer surface of the water pool, a treatment chamber is fixed on the top of the water pool, and the bottom end of the treatment chamber extends to the inside of the water pool, a guide plate three and two guide plates two and a guide plate one with a circular arc bottom are fixedly connected to the inner top of the treatment chamber, two guide plates are fixedly connected to the inner wall of the water pool, and two hollow rotating shafts concentric with the circular arc at the bottom of the guide plate one are penetrated on one side of the water pool.

[0008] The output shaft end of the motor is fixedly connected to one end of the hollow rotating shaft, a plurality of hollow fan blades connected to the inner cavity of the hollow rotating shaft are fixed on the outer surface of the hollow rotating shaft, a plurality of conical tubes connected to the inner cavity of the hollow fan blade are fixed on the hollow fan blade, a nozzle is threadedly connected to the output end of the conical tube, a plurality of spray holes are opened on the nozzle, a fixing rod is rotatably connected in the spray hole, and a ball matching the spray hole is fixedly installed on the fixing rod.

[0009] A header box connected to a hollow rotating shaft is fixed on the inner wall of one side of the water pool. The header box is connected to a submersible pump installed at the bottom of the water pool through a connecting pipe, which ensures the contact area and contact time between water splashes and exhaust gas and improves the exhaust gas purification efficiency.

[0010] As a preferred embodiment, a support plate is fixedly connected to the bottom of the motor, the support plate is fixedly connected to the outer surface of the water pool, the treatment chamber is connected to the water pool through a bottom opening, and the motor can provide power for the rotation of the hollow shaft.

[0011] As a preferred embodiment, the outer surface of the output end of the conical tube is fixedly connected to a trumpet tube coaxial with the conical tube, the outer surface of the sphere is provided with a plurality of grooves, and the end surfaces of the two hollow shafts close to the collecting box are provided with sealing gaskets, which can prevent water leakage at the connection between the collecting box and the hollow shaft.

[0012] As a preferred embodiment, a water supply pipe is fixedly connected to the top of one side of the water pool, a sewage pipe is fixedly connected to the bottom of one side of the water pool, a fixed block is fixedly connected to the top of the water pool close to the sewage pipe, a waste gas pipe connected to the inner cavity of the treatment chamber passes through the fixed block, and an exhaust pipe connected to the inner cavity of the treatment chamber is fixedly connected to the top of the treatment chamber, and the sewage pipe can lead out dirt inside the water pool.

[0013] As a preferred embodiment, a water level gauge connected to the inside of the water pool through connecting pipe 2 is fixed on the outer surface of the water pool, and the water level gauge can display the liquid level in the water pool.

[0014] As a preferred embodiment, the spray hole is opened at an angle and has a slope equal to that of the bell pipe, which can reduce the contact between the atomized industrial water and the bell pipe.

[0015] As a preferred embodiment, the water pool is used to store the medicine liquid, the submersible pump is used to transport the medicine liquid to the interior of the collecting box, and the outer sleeve of the water inlet of the submersible pump is provided with a filter screen, which can filter the submersible pump to prevent impurities from entering the interior of the submersible pump.

[0016] As a preferred implementation manner, the guide plate 1 and the guide plate 2 are both fixedly connected to the top of the processing chamber, and the two guide plates 1 and the two guide plates 2 are alternately arranged.

[0017] A guide block is fixedly connected to the outer surface of one of the guide plates 1, the upper part of the guide block is a convex arc shape, and the lower part is a concave arc shape. The guide plate 3 is fixedly connected to the inner top of the treatment chamber and is located between the guide plate 2 and the inner wall of the treatment chamber. The guide plate is fixedly connected to the inner wall of the pool and is located below the guide plate 1. The guide plate is composed of an arc plate and an inclined plate, and the arc plate and the inclined plate are connected by a horizontal plate in the middle. The protrusion of the guide block accelerates the exhaust gas when passing through the guide block, and the accelerated exhaust gas will hit the water surface again.

[0018] As a preferred embodiment, the guide plate three and the guide plate one are both J-shaped, a section of the guide plate two close to the bottom is arc-shaped, the arc-shaped surface of the guide plate two is lower than the water level of the guide plate, and the guide plates one, three, two and three can guide the exhaust gas.

[0019] As a preferred embodiment, the exhaust pipe is installed at the top of the processing chamber and is located between the guide plate three and the inner wall of the processing chamber. The exhaust pipe can lead out the exhaust gas inside the processing chamber.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are:

[0021] 1. The present invention designs a rotating hollow fan blade at the center of the arc at the bottom of the guide plate, so that a stable vortex is formed here, which effectively guides the water splash and exhaust gas, makes the water splash and exhaust gas evenly distributed, ensures the contact area and contact time between the water splash and the exhaust gas, improves the exhaust gas purification efficiency, ensures the overall efficiency of the equipment, and ensures the production efficiency and environmental protection performance.

[0022] 2. In the present invention, the conical tube, trumpet tube and nozzle on the hollow fan blade form a venturi tube-type nozzle, and the trumpet tube is not directly fixed on the end face of the nozzle, but fixed on the inclined surface of the conical tube, so that the industrial water immediately enters the inside of the trumpet tube after being sprayed out from the spray hole, and there is no additional straight pipe section transition, so that its length is shorter, reducing the space occupied, and the cancellation of the straight pipe also reduces the resistance along the way of industrial water, thereby reducing the unstable factors in the fluid flow, thereby improving the stability and controllability of the system to a certain extent, and also shortening the distance from the injection point to the separation area of ​​the fluid, thereby making the agent react chemically with the harmful substances in the exhaust gas faster, shortening the chemical reaction time to a certain extent, and further improving the purification efficiency. The sphere can block impurities from entering the spray hole, preventing the impurities from clogging the spray hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the main structure of a waste gas treatment device for metal smelting provided by the present invention;

[0024] Figure 2 A schematic diagram of the position structure of an exhaust pipe of an exhaust gas treatment device for metal smelting provided by the present invention;

[0025] Figure 3 A schematic diagram of the internal structure of a waste gas treatment device for metal smelting provided by the present invention;

[0026] Figure 4 A schematic diagram of the structure of the header position of a waste gas treatment device for metal smelting provided by the present invention;

[0027] Figure 5 A partial structural schematic diagram of a waste gas treatment device for metal smelting provided by the present invention;

[0028] Figure 6 A schematic diagram of the nozzle position structure of a waste gas treatment device for metal smelting provided by the present invention;

[0029] Figure 7 A schematic cross-sectional structure diagram of a waste gas treatment device for metal smelting provided by the present invention;

[0030] Figure 8 A metal smelting waste gas treatment device provided by the present invention Figure 7 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Legend:

[0032] 1. Water tank; 101. Water supply pipe; 102. Exhaust pipe; 103. Fixed block; 104. Drain pipe; 2. Treatment chamber; 201. Exhaust pipe; 3. Collecting box; 301. Connecting pipe one; 302. Submersible pump; 4. Hollow shaft; 401. Hollow fan blade; 402. Conical pipe; 403. Trumpet pipe; 404. Nozzle; 405. Spray hole; 406. Sphere; 407. Fixed rod; 408. Sealing pad; 409. Groove; 5. Motor; 6. Support plate; 7. Connecting pipe two; 701. Water level gauge; 8. Guide plate one; 801. Guide block; 9. Guide plate; 10. Guide plate two; 11. Guide plate three. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the present invention provides a technical solution: a waste gas treatment device for metal smelting, comprising: a water pool 1, a motor 5 is arranged on the outer surface of the water pool 1, a treatment chamber 2 is fixed on the top of the water pool 1, and the bottom end extends to the inside of the water pool 1, a guide plate three 11 and two guide plates two 10 and a guide plate one 8 with a circular arc bottom are fixedly connected to the inner top of the treatment chamber 2, two guide plates 9 are fixedly connected to the inner wall of the water pool 1, and two hollow rotating shafts 4 concentric with the bottom circular arc of the guide plate one 8 are penetrated on one side of the water pool 1.

[0035] The output shaft end of the motor 5 is fixedly connected to one end of the hollow rotating shaft 4, and a plurality of hollow fan blades 401 connected to the inner cavity of the hollow rotating shaft 4 are fixed on the outer surface of the hollow rotating shaft 4. A plurality of conical tubes 402 connected to the inner cavity of the hollow fan blade 401 are fixed on the hollow fan blade 401. The output end of the conical tube 402 is threadedly connected to a nozzle 404, and a plurality of spray holes 405 are opened on the nozzle 404. A fixed rod 407 is rotatably connected in the spray hole 405, and a ball 406 matching the spray hole 405 is fixedly installed on the fixed rod 407.

[0036] A collecting box 3 connected to a hollow rotating shaft 4 is fixed on the inner wall of one side of the water pool 1. The collecting box 3 is connected to a submersible pump 302 installed at the bottom of the water pool 1 through a connecting pipe 301, thereby ensuring the contact area and contact time between the water splash and the exhaust gas, improving the exhaust gas purification efficiency, ensuring the overall efficiency of the equipment, and ensuring the production efficiency and environmental protection performance.

[0037] like Figure 1 As shown, the bottom of the motor 5 is fixedly connected to a support plate 6, the support plate 6 is fixedly connected to the outer surface of the water pool 1, the treatment chamber 2 is connected to the water pool 1 through the bottom opening, and the motor 5 can provide power for the rotation of the hollow shaft 4, so that the hollow shaft 4 rotates.

[0038] like Figure 5 , Figure 6 and Figure 7 As shown, the outer surface of the output end of the conical tube 402 is fixedly connected to a trumpet tube 403 coaxial with the conical tube 402, the outer surface of the sphere 406 is provided with a plurality of grooves 409, and the two hollow shafts 4 are provided with sealing gaskets 408 on one end surface close to the header 3. The sealing gaskets 408 can prevent water leakage at the connection between the header 3 and the hollow shaft 4, making it convenient for users to use.

[0039] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a water supply pipe 101 is fixedly connected to the top of one side of the pool 1, a sewage pipe 104 is fixedly connected to the bottom of one side of the pool 1, a fixed block 103 is fixedly connected to the top of the pool 1 near the sewage pipe 104, a waste gas pipe 102 connected to the inner cavity of the treatment chamber 2 passes through the fixed block 103, and an exhaust pipe 201 connected to the inner cavity of the treatment chamber 2 is fixedly connected to the top of the treatment chamber 2. The sewage pipe 104 can lead out the dirt inside the pool 1, thereby ensuring the normal water quality inside the pool 1 to a certain extent.

[0040] like Figure 1 and Figure 2 As shown, a water level gauge 701 is fixed on the outer surface of the water pool 1 and is connected to the inside of the water pool 1 through a connecting pipe 2 7. The water level gauge 701 can display the liquid level in the water pool 1, making it easy for users to monitor and discover changes in the water level inside the water pool 1.

[0041] like Figure 7 As shown, the spray hole 405 is opened at an angle and has the same slope as the bell tube 403, which can reduce the contact between the atomized industrial water and the bell tube 403 and improve the utilization rate of the atomized industrial water.

[0042] like Figure 4 As shown, the pool 1 is used to store the medicine liquid, the submersible pump 302 is used to transport the medicine liquid to the interior of the collecting box 3, and a filter is provided on the outside of the water inlet of the submersible pump 302. The filter can filter the submersible pump 302 to prevent impurities from entering the interior of the submersible pump 302, thereby ensuring the normal operation of the submersible pump 302.

[0043] like Figure 3 and Figure 4 As shown, the guide plate 1 8 and the guide plate 2 10 are both fixedly connected to the top of the processing chamber 2 , and the two guide plates 1 8 and the two guide plates 2 10 are alternately arranged.

[0044] A guide block 801 is fixedly connected to the outer surface of one of the guide plates 8, the upper part of the guide block 801 is a convex arc shape, and the lower part is a concave arc shape. The guide plate 3 11 is fixedly connected to the inner top of the treatment chamber 2 and is located between the guide plate 2 10 and the inner wall of the treatment chamber 2. The guide plate 9 is fixedly connected to the inner wall of the pool 1 and is located below the guide plate 8. The guide plate 9 is composed of an arc plate and an inclined plate, and the arc plate and the inclined plate are connected by a horizontal plate in the middle. The protrusion of the guide block 801 accelerates the exhaust gas when passing through the guide block 801. The accelerated exhaust gas will hit the water surface again and treat the harmful substances in the exhaust gas again.

[0045] like Figure 3 and Figure 4As shown, the shapes of guide plate three 11 and guide plate one 8 are both J-shaped, a section of guide plate two 10 near the bottom is arc-shaped, and the arc-shaped surface of guide plate two 10 is lower than the water level of guide plate 9. Guide plate one 8, guide plate three 11, guide plate two 10 and guide plate 9 can guide the exhaust gas so that the exhaust gas moves along a prescribed route inside the treatment chamber 2.

[0046] like Figure 3 and Figure 4 As shown, the exhaust pipe 201 is installed on the top of the processing chamber 2 and is located between the guide plate 3 11 and the inner wall of the processing chamber 2. The exhaust pipe 201 can lead out the exhaust gas inside the processing chamber 2 for the convenience of users.

[0047] Working principle: This equipment is a waste gas treatment device for metal smelting. When in use, first connect the water supply pipe 101 to the industrial water, add chemical agents to the industrial water, and then use the water supply pipe 101 to guide the industrial water into the pool 1, and the liquid level is higher than the highest point of the guide plate 9 and lower than the lowest point of the guide plate 8. The cooperation of the water level meter 701 and the connecting pipe 2 7 can monitor the liquid level changes inside the pool 1, and the sewage pipe 104 can discharge the dirt in the pool 1.

[0048] Then, the submersible pump 302 is started, and the submersible pump 302 introduces industrial water into the header 3 through the connecting pipe 1 301. Then, the industrial water in the header 3 enters the hollow fan blade 401 through the hollow shaft 4, and then the industrial water in the hollow fan blade 401 enters the conical tube 402. When the industrial water in the conical tube 402 leaves the conical tube 402, the diameter of the conical tube 402 is reduced, and thus the industrial water obtains a greater flow rate when leaving the conical tube 402. The industrial water with a greater flow rate will enter the nozzle 404, and then be sprayed out in an atomized manner from the nozzle hole 405, and the sealing gasket 408 is sealed. The leakage of industrial water when entering the hollow rotating shaft 4 can be avoided. The sphere 406 on the fixed rod 407 blocks the entrance of the spray hole 405, and the groove 409 provided on the sphere 406 makes the surface of the sphere 406 uneven, so that the sphere 406 can block larger impurities from entering the spray hole 405. The sphere 406 can make a circular motion with the fixed rod 407 as the center under the impact of the industrial water to avoid the blockage of the spray hole 405. The trumpet tube 403 can guide the atomized industrial water so that the atomized industrial water is evenly distributed inside the designated working area.

[0049] Start the motor 5 on the support plate 6, so that the motor 5 drives the hollow shaft 4 to rotate through the output shaft, and the hollow shaft 4 drives the hollow fan blade 401 to rotate, and then the exhaust pipe 102 inside the fixed block 103 is connected to the exhaust main pipe, and the exhaust gas enters the interior of the treatment chamber 2 through the exhaust pipe 102, and then hits the industrial water surface on the lower side under the restriction of one of the guide plates 8, and stirs up a large amount of water splashes. At this time, a large amount of water splashes combine with the dust in the exhaust gas, making the dust heavier and falling into the water, and the chemical agents in the industrial water will react chemically with the harmful substances in the exhaust gas to remove the harmful substances in the exhaust gas, and then the exhaust gas is guided forward by one of the guide plates 9. At this time, the exhaust gas will hit one of the guide plates 10 and move upward. At this time, the exhaust gas reaches the center of the arc at the bottom of one of the guide plates 8. Because the hollow fan blade 401 is in a rotating state, the exhaust gas will be guided by the hollow fan blade 401 to form a stable vortex, and the spray hole 405 will spray the industrial water to treat the exhaust gas again, further improving the exhaust gas treatment efficiency.

[0050] Then the exhaust gas continues to move upward, passes through the highest point of one of the guide plates 2 10, and then moves downward. Because of the protrusion of the guide block 801, the exhaust gas is accelerated when passing through the guide block 801. The accelerated exhaust gas will hit the water surface again and process the harmful substances in the exhaust gas again. Then, when the exhaust gas diffuses to the center of the arc at the bottom of another guide plate 18, the hollow fan blades 401 again form a vortex for the exhaust gas and purify the exhaust gas again. Then, the exhaust gas passes through the highest point of another guide plate 2 10 and diffuses downward. Then, after passing through the lowest point of the guide plate 3 11, it diffuses upward and is finally discharged through the exhaust pipe 201.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A waste gas treatment device for metal smelting, comprising: A water pool (1), wherein a motor (5) is arranged on the outer surface of the water pool (1), characterized in that: A treatment chamber (2) whose bottom end extends into the interior of the water pool (1) is fixed on the top of the water pool (1); a guide plate three (11), two guide plates two (10) and two guide plates one (8) with circular arc bottoms are fixedly connected to the inner top of the treatment chamber (2); two guide plates (9) are fixedly connected to the inner wall of the water pool (1); and two hollow rotating shafts (4) concentric with the circular arc bottoms of the guide plates one (8) are penetrated on one side of the water pool (1); The output shaft end of the motor (5) is fixedly connected to one end of the hollow rotating shaft (4); a plurality of hollow blades (401) in communication with the inner cavity of the hollow rotating shaft (4) are fixedly provided on the outer surface of the hollow rotating shaft (4); a plurality of conical tubes (402) in communication with the inner cavity of the hollow blades (401) are fixedly provided on the hollow fan blades (401); a nozzle (404) is threadedly connected to the output end of the conical tube (402); a plurality of spray holes (405) are provided on the nozzle (404); a fixing rod (407) is rotatably connected inside the spray hole (405); a ball (406) matching the spray hole (405) is fixedly mounted on the fixing rod (407); A header (3) connected to a hollow rotating shaft (4) is fixed on the inner wall of one side of the water pool (1); the header (3) is connected to a submersible pump (302) installed at the bottom of the water pool (1) through a connecting pipe (301).

2. The metal smelting waste gas treatment device according to claim 1, characterized in that: A support plate (6) is fixedly connected to the bottom of the motor (5), and the support plate (6) is fixedly connected to the outer surface of the water pool (1). The treatment chamber (2) is connected to the water pool (1) through a bottom opening.

3. The metal smelting waste gas treatment device according to claim 1, characterized in that: The outer surface of the output end of the conical tube (402) is fixedly connected to a trumpet tube (403) coaxial with the conical tube (402), the outer surface of the sphere (406) is provided with a plurality of grooves (409), and the end surfaces of the two hollow shafts (4) close to the header (3) are sleeved with sealing gaskets (408).

4. The metal smelting waste gas treatment device according to claim 2, characterized in that: A water supply pipe (101) is fixedly connected to the top of one side of the water pool (1), a sewage pipe (104) is fixedly connected to the bottom of one side of the water pool (1), a fixed block (103) is fixedly connected to the top of the water pool (1) near the sewage pipe (104), a waste gas pipe (102) connected to the inner cavity of the treatment chamber (2) passes through the fixed block (103), and an exhaust pipe (201) connected to the inner cavity of the treatment chamber (2) is fixedly connected to the top of the treatment chamber (2).

5. The metal smelting waste gas treatment device according to claim 1, characterized in that: A water level gauge (701) is fixed on the outer surface of the water pool (1) and is connected to the interior of the water pool (1) via a second connecting pipe (7).

6. The metal smelting waste gas treatment device according to claim 1, characterized in that: The spray hole (405) is opened at an angle, and has the same slope as that of the bell tube (403).

7. The metal smelting waste gas treatment device according to claim 2, characterized in that: The water pool (1) is used to store the medicine liquid, the submersible pump (302) is used to transport the medicine liquid to the interior of the header (3), and a filter screen is provided on the outside of the water inlet of the submersible pump (302).

8. The metal smelting waste gas treatment device according to claim 4, characterized in that: The guide plate 1 (8) and the guide plate 2 (10) are both fixedly connected to the top of the processing chamber (2), and the two guide plates 1 (8) and the two guide plates 2 (10) are arranged alternately; A guide block (801) is fixedly connected to the outer surface of one of the guide plates (8), the upper portion of the guide block (801) is convex in arc shape and the lower portion is concave in arc shape, the guide plate (11) is fixedly connected to the inner top of the treatment chamber (2) and is located between the guide plate (10) and the inner wall of the treatment chamber (2), the guide plate (9) is fixedly connected to the inner wall of the pool (1) and is located below the guide plate (8), the guide plate (9) is composed of an arc plate and an inclined plate, and the arc plate and the inclined plate are connected by a horizontal plate in the middle.

9. The metal smelting waste gas treatment device according to claim 8, characterized in that: The guide plate three (11) and the guide plate one (8) are both J-shaped, and a section of the guide plate two (10) close to the bottom is arc-shaped, and the arc surface of the guide plate two (10) is lower than the water surface height of the guide plate (9).

10. The metal smelting waste gas treatment device according to claim 8, characterized in that: The exhaust pipe (201) is installed on the top of the processing chamber (2) and is located between the guide plate three (11) and the inner wall of the processing chamber (2).

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