A purification device for the tail gas of antimony crystallization salt reaction of crude antimony alloy with low copper content

Abstract

This invention belongs to the field of waste gas treatment and discloses a tail gas purification device for antimony crystallization salt reaction of crude antimony alloy with low copper content. The device consists of an inlet pipe, a filter chamber, a blade cylinder, a transition pipe, and an exhaust pipe connected in sequence. In use, the invention achieves dynamic self-adaptation between the amount of reagent fed and the tail gas flow through the rotation of the spiral blades, effectively avoiding the waste of excessive reagent or insufficient reagent that leads to substandard purification. At the same time, the transmission component and the flow guiding component in the transition pipe cooperate to realize the continuous reciprocating non-fully closed opening and closing of the flow guiding plate. This not only creates continuous disturbance to the gas-pharmaceutical mixed airflow, greatly improving the mixing uniformity and ensuring that harmful components in the tail gas fully react with the reagent, but also regulates the airflow velocity and direction, avoiding component accumulation and corrosion caused by airflow deviation. This achieves self-adaptation and unattended operation in the waste gas treatment process, improving waste gas purification efficiency and device operation stability.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a device for purifying the tail gas of antimony crystallization salt reaction in crude antimony alloy with low copper content. Background Technology

[0002] During the low-copper treatment of crude antimony alloys, the antimony crystallization salt reaction will produce exhaust gas containing antimony oxides, acidic components and a small amount of dust. If this exhaust gas is directly emitted, it will not only pollute the atmospheric environment, but also harm the surrounding soil and water bodies. At the same time, it does not meet the relevant standards for industrial waste gas emissions. Therefore, the exhaust gas must be purified before it is emitted.

[0003] Currently, the common industrial method for purifying this type of exhaust gas is to add purification agents to the exhaust gas emission process. These agents react chemically with the harmful components in the exhaust gas, converting them into harmless or easily treatable substances, thereby achieving compliant emissions.

[0004] However, some existing exhaust gas purification devices use manual addition of reagents, while others use mechanical feeding. Manual addition is labor-intensive, difficult to control in terms of dosage, and prone to over-dosing and waste or under-dosing, resulting in substandard purification. Mechanical feeding devices mostly feed at a fixed rate, which cannot adapt to dynamic changes in exhaust gas flow. Furthermore, most require external electrical power to drive the reagent stirring, feeding, and airflow mixing structure, leading to high energy consumption. Additionally, some devices exhibit uneven mixing of reagents and exhaust gas, causing airflow deviation and turbulence in the transition pipe, resulting in incomplete reaction of harmful components in the exhaust gas and poor purification effect. (Invention Content)

[0005] The present invention provides an antimony crystallization salt reaction tail gas purification device for crude antimony alloy with low copper content. The device achieves self-adaptation and unmanned operation of the waste gas treatment process through turbine blades, thereby improving the waste gas purification efficiency and the stability of device operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a purification device for the tail gas of antimony crystallization reaction of crude antimony alloy with low copper content. The device includes: an inlet pipe, a filter chamber, a blade cylinder, a transition pipe, and an exhaust pipe connected in sequence; a reagent chamber connected to the blade cylinder, the discharge end of the reagent chamber being provided with a discharge pipe; a fixed frame, a blade shaft, and turbine blades disposed inside the blade cylinder, wherein the turbine blades are fixedly sleeved on the outer surface of the blade shaft, the blade shaft is rotatably connected to the fixed frame, a first bevel gear is fixedly disposed at one end of the blade shaft, the first bevel gear meshes with a second bevel gear, a vertical shaft is fixedly disposed on one side of the second bevel gear, the vertical shaft passes through the discharge pipe, and a spiral blade and a stirring blade are fixedly installed on the vertical shaft; a transmission assembly and a flow guiding assembly disposed inside the transition pipe, the transmission assembly being connected to the end of the blade shaft near the transition pipe, and the flow guiding assembly cooperating with the transmission assembly to disturb the airflow inside the transition pipe.

[0007] As a further improvement of the present invention: the fixing frame is fixedly disposed on the inner wall of the blade cylinder, the blade shaft and the fixing frame are rotatably connected by bearings, and the turbine blades are arranged in a circumferential array along the blade shaft.

[0008] As a further improvement of the present invention: the stirring blade is disposed inside the discharge chamber of the medicine tank, the spiral blade is disposed inside the discharge pipe, and the outer diameter of the spiral blade is adapted to the inner wall of the discharge pipe.

[0009] As a further improvement of the present invention: both the blade shaft and the vertical shaft are equipped with protective covers through bearings, the discharge port of the feed pipe is connected to the interior of the blade cylinder, and the discharge port faces the air inlet side of the turbine blade.

[0010] As a further improvement of the present invention: the transmission assembly includes two connecting rods and two rollers, one end of the two connecting rods is fixedly connected to the end of the blade shaft near the transition tube, and the two rollers are respectively disposed at the other end of the two connecting rods.

[0011] As a further improvement of the present invention: the flow guiding assembly includes two support rods and two flow guiding plates. The two support rods are disposed on the inner wall of the transition tube by bearings, and the two flow guiding plates are respectively fixedly sleeved on the outer surface of the two support rods.

[0012] As a further improvement of the present invention: both sides of the inner wall of the transition tube are fixedly connected to a sealing box, and the inner walls of the two sealing boxes are slidably embedded with a pressure plate. The pressure plate abuts against the roller, and multiple sets of metal springs are arranged between the inner walls of the two sealing boxes and the pressure plate.

[0013] As a further improvement of the present invention: the air outlets of the two sealed boxes are connected to hollow tubes, the air outlets of the two hollow tubes are connected to cylinders, push plates are slidably embedded in the inner walls of the two cylinders, springs are provided between the two push plates and the inner walls of the two cylinders respectively, and transmission rods are fixedly provided on one side of the two push plates.

[0014] As a further improvement of the present invention: the ends of the two transmission rods away from the push plate are respectively hinged to the rear middle of the two guide plates, and the outer wall of the push plate is in contact with the inner wall of the cylinder.

[0015] As a further improvement of the present invention: the intake pipe and the filter chamber, the filter chamber and the blade cylinder, the blade cylinder and the transition pipe, and the transition pipe and the exhaust pipe are all sealed together by flanges, and the interior of the filter chamber is filled with adsorption filter packing.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0017] This invention achieves dynamic self-adaptation between the amount of reagent fed and the volume of exhaust gas through the rotation of the spiral blades, effectively avoiding the waste of excessive or insufficient reagent that leads to substandard purification. At the same time, the transmission component and the flow guiding component in the transition pipe cooperate to realize the continuous reciprocating non-fully closed opening and closing of the flow guiding plate. This not only creates continuous disturbance to the gas-pharmaceutical mixed airflow, greatly improving the mixing uniformity and ensuring that harmful components in the exhaust gas fully react with the reagent, but also regulates the airflow velocity and direction, avoiding material accumulation and corrosion of components caused by airflow deviation. This achieves self-adaptation and unmanned operation in the waste gas treatment process, improving waste gas purification efficiency and the stability of device operation. Attached Figure Description

[0018] Figure 1 This invention presents an overall schematic diagram of an antimony crystallization salt reaction tail gas purification device for low-copper conversion of crude antimony alloy.

[0019] Figure 2 This is a cross-sectional view of the blade tube in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the internal structure of the medicine tank and the feed pipe in the embodiments of this application.

[0021] Figure 4 This is a schematic diagram of the internal structure of the transition tube in an embodiment of this application.

[0022] Figure 5 This is a cross-sectional schematic diagram of the transition tube in an embodiment of this application.

[0023] Figure 6This is a schematic diagram of the transmission component and the flow guiding component in the embodiments of this application.

[0024] Figure 7 This is a schematic diagram of the internal structure of the sealed box in an embodiment of this application.

[0025] Figure 8 This is a cross-sectional view of the cylinder in an embodiment of this application.

[0026] Figure 9 For this application Figure 3 Enlarged view of point A in the middle.

[0027] Legend: 1. Inlet pipe; 101. Filter chamber; 102. Blade tube; 103. Transition pipe; 104. Exhaust pipe; 2. Chemical chamber; 201. Feed pipe; 3. Fixing frame; 301. Blade shaft; 302. First bevel gear; 303. Second bevel gear; 304. Vertical shaft; 305. Spiral blade; 306. Stirring blade; 307. Protective cover; 308. Turbine blade; 4. Support rod; 401. Guide plate; 402. Sealing box; 403. Metal spring; 404. Pressure plate; 405. Hollow tube; 406. Cylinder; 407. Push plate; 408. Transmission rod; 409. Spring; 410. Connecting rod; 411. Roller. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-9 This invention provides a purification device for the tail gas of antimony crystallization reaction of crude antimony alloy with low copper content. The device includes: an inlet pipe 1, a filter chamber 101, a blade cylinder 102, a transition pipe 103, and an exhaust pipe 104 connected in sequence; a reagent chamber 2 connected to the blade cylinder 102, the discharge end of the reagent chamber 2 is provided with a discharge pipe 201, and the inlet pipe 1 and the filter chamber 101, the filter chamber 101 and the blade cylinder 102, the blade cylinder 102 and the transition pipe 103, and the transition pipe 103 and the exhaust pipe 104 are all sealed by flanges. The filter chamber 101 is filled with adsorption filter packing.

[0030] During operation, the blower discharges the pretreated antimony crystallization salt reaction exhaust gas into the filter chamber 101 through the inlet pipe 1. The gas undergoes filtration and adsorption treatment through the internal adsorption filter packing. The end cap of the discharge pipe 201 of the reagent chamber 2 is opened, and the purification agent is added into the reagent chamber 2 to prepare for exhaust gas purification. The exhaust gas treated by the filter chamber 101 enters the blade cylinder 102. During the flow of the exhaust gas, the turbine blades 308 are rotated, which in turn drives the linkage structure to operate, realizing automatic agent feeding and mixing with the exhaust gas, secondary mixing and regulation of the airflow in the transition pipe 103, and finally, the exhaust gas is discharged through the exhaust pipe 104 in compliance with standards, completing the entire exhaust gas purification process.

[0031] like Figures 1-9 As shown, in one embodiment, a fixed frame 3, a blade shaft 301, and a turbine blade 308 are disposed inside the blade cylinder 102. The turbine blade 308 is fixedly sleeved on the outer surface of the blade shaft 301. The blade shaft 301 is rotatably connected to the fixed frame 3. A first bevel gear 302 is fixedly disposed at one end of the blade shaft 301. A second bevel gear 303 is meshed with the first bevel gear 302. A vertical shaft 304 is fixedly disposed on one side of the second bevel gear 303. The vertical shaft 304 passes through the feed pipe 201, and a spiral blade 305 and a stirring blade 306 are fixedly installed on the vertical shaft 304.

[0032] Furthermore, the fixing frame 3 is fixedly installed on the inner wall of the blade cylinder 102. The fixing frame 3 provides a stable support point for the blade shaft 301. The blade shaft 301 and the fixing frame 3 are rotatably connected by bearings. The bearings can reduce the friction when the blade shaft 301 rotates, reduce component wear, ensure smooth rotation, and reduce exhaust gas thrust loss. The turbine blades 308 are arranged in a circumferential array along the blade shaft 301. The circumferential array of turbine blades 308 can make the exhaust gas thrust on the turbine blades 308 more uniform, drive the blade shaft 301 to rotate at a uniform speed, and at the same time promote the diffusion of exhaust gas in the blade cylinder 102, creating conditions for the initial mixing of the agent and exhaust gas.

[0033] Furthermore, the stirring blade 306 is installed inside the discharge chamber of the reagent chamber 2. The stirring blade 306 can continuously stir the purification agent in the reagent chamber 2 to prevent the agent from bridging and clumping due to moisture absorption and accumulation, ensuring smooth agent discharge and avoiding blockage of the discharge pipe 201. The spiral blade 305 is installed inside the discharge pipe 201, and the outer diameter of the spiral blade 305 is adapted to the inner wall of the discharge pipe 201. When the spiral blade 305 rotates, it can quantitatively and evenly push the agent in the reagent chamber 2 into the blade cylinder 102, avoiding agent leakage and uneven discharge, and ensuring accurate ratio of agent to exhaust gas.

[0034] Furthermore, both the blade shaft 301 and the vertical shaft 304 are equipped with protective covers 307 via bearings. The protective covers 307 seal and protect the transmission components of the first bevel gear 302 and the second bevel gear 303, preventing dust and reagent residues in the exhaust gas from adhering. The discharge port of the feed pipe 201 is connected to the interior of the blade cylinder 102, and the discharge port faces the air inlet side of the turbine blade 308. After the reagent enters the blade cylinder 102, it encounters the high-speed flowing exhaust gas. With the help of the rotational disturbance of the turbine blade 308, the reagent and the exhaust gas are initially swirled and mixed, improving the initial mixing uniformity.

[0035] It is worth noting that the feeding of the agent by the spiral blade 305 in this device is a self-adaptive quantitative feeding that precisely matches the exhaust gas flow rate, rather than a fixed-rate quantitative feeding. Its quantitative characteristic is achieved through a linear correlation structure between rotational speed and feeding amount. The core is to convert the rotational speed of the turbine blade 308 generated by the exhaust gas thrust into the quantitative feeding action of the spiral blade 305. Throughout the process, a fixed relationship between rotational speed and feeding amount is formed through the mechanical structure, ultimately achieving a quantitative feeding effect where the feeding amount changes synchronously with the exhaust gas flow rate. Specifically:

[0036] Quantitative nature of the power source rotation speed: The rotation speed of the turbine blade 308 is strictly positively correlated with the exhaust gas flow rate entering the blade cylinder 102. That is, the greater the exhaust gas flow rate, the greater the thrust on the turbine blade 308 and the higher its rotation speed. The smaller the exhaust gas flow rate, the smaller the thrust and the lower the rotation speed. Moreover, the turbine blade 308 has no additional power drive and is driven only by the exhaust gas thrust. Its rotation speed is completely determined by the exhaust gas flow rate, forming the basis for the quantitative correlation between exhaust gas flow rate and turbine rotation speed.

[0037] Fixed speed ratio of the transmission chain: Turbine blades 308 drive blade shaft 301 to rotate coaxially. Blade shaft 301 is driven by a fixed gear ratio of first bevel gear 302 and second bevel gear 303 to drive vertical shaft 304 to rotate synchronously. The gear ratio of this bevel gear set is a fixed value, without speed adjustment, slippage or other variables. Therefore, a fixed speed transmission ratio is formed between blade shaft 301 and vertical shaft 304. Vertical shaft 304 is coaxially fixed with helical blade 305 and stirring blade 306. The speed of vertical shaft 304 is directly equal to the rotational speed of helical blade 305, and finally the turbine speed is quantitatively transmitted to the helical blade speed without any speed loss or variable interference.

[0038] The quantitative structure of the spiral blade 305: The spiral blade 305 is a constant-volume spiral feeding structure with equal pitch and equal outer diameter. Its pitch, blade outer diameter and the gap between the inner wall of the feed pipe 201 are all fixed values. This structure determines that the amount of medicine pushed by the spiral blade is a fixed value for each rotation, that is, the feed amount per week is constant. Combined with the characteristic that the rotation speed of the spiral blade is quantitatively determined by the exhaust gas flow rate, the number of rotations of the spiral blade per unit time is positively correlated with the exhaust gas flow rate. Finally, the quantitative feeding effect of feed amount per unit time = fixed feed amount per week × number of rotations per unit time is achieved.

[0039] Furthermore, the continuous rotation of the turbine blades 308 and the spiral blades 305 is not an irregular continuous feeding, but rather a dynamic quantitative feeding under continuous rotation. This is achieved by using the fixed feeding amount per revolution of the constant-volume spiral blades 305 and the fixed transmission ratio between the first bevel gear 302 and the second bevel gear 303, plus the strict positive correlation between the rotational speed of the turbine blades 308 and the exhaust gas flow rate. The core of quantitative feeding is that the feeding amount per revolution is fixed and the feeding amount per unit time is uniquely determined by the exhaust gas flow rate, rather than intermittent feeding, which is suitable for the actual working conditions of continuous generation and continuous treatment of industrial waste gas.

[0040] After the agent enters the blade cylinder 102, it is initially mixed with the exhaust gas. Most of the mixed airflow flows through the gap between the turbine blades 308 and the blade cylinder 102, forming a swirling mixing effect and improving the uniformity of gas-pharmaceutical mixing. However, due to the high exhaust gas velocity inside the blade cylinder 102 and the limited disturbance range of the turbine blades 308, uneven mixing of the agent and exhaust gas still occurs in some areas. Furthermore, the mixed airflow may experience uneven flow velocity and flow deviation after passing through the gap. If it is directly discharged into the exhaust pipe 104, it will result in the residue of unreacted harmful components in the exhaust gas, affecting the purification effect. Therefore, it is necessary to perform secondary mixing and airflow regulation through the transition pipe 103. The core purpose of the transition pipe 103 and its internal transmission and guiding components is to further improve the uniformity of gas-pharmaceutical mixing, regulate the airflow velocity and direction, ensure that the harmful components in the mixed airflow react fully with the agent, and at the same time avoid the airflow deviation that may cause localized material accumulation and corrosion in the exhaust pipe 104, ensuring that the exhaust gas is discharged smoothly and meets the standards.

[0041] like Figures 1-9 As shown, in one embodiment, a transmission component and a flow guiding component are disposed inside the transition tube 103. The transmission component is connected to one end of the blade shaft 301 near the transition tube 103. The flow guiding component cooperates with the transmission component to disturb the airflow inside the transition tube 103, thereby completing secondary mixing and airflow regulation.

[0042] Furthermore, the transmission assembly includes two connecting rods 410 and two rollers 411. One end of the two connecting rods 410 is fixedly connected to the end of the blade shaft 301 near the transition tube 103. The two rollers 411 are respectively disposed at the other end of the two connecting rods 410. The rollers 411 convert the circumferential motion of the connecting rods 410 into intermittent squeezing action on the pressure plate 404. At the same time, the rolling contact reduces the friction between the rollers and the pressure plate 404, reduces wear, and ensures smooth transmission. The flow guiding assembly includes two support rods 4 and two guide plates 401. The two support rods 4 are disposed on the inner wall of the transition tube 103 through bearings. The support rods 4 serve as the fulcrum of rotation. The two guide plates 401 are respectively fixedly sleeved on the outer surface of the two support rods 4. The guide plates 401 are the core structure for realizing airflow disturbance, secondary mixing, and airflow regularization. Their reciprocating opening and closing action can continuously shear and disturb the mixed airflow, while regularizing the airflow direction.

[0043] Furthermore, sealing boxes 402 are fixedly connected to both sides of the inner wall of the transition pipe 103. Pressure plates 404 are slidably embedded in the inner walls of the two sealing boxes 402. The pressure plates 404 bear the pressure of the rollers 411, converting the circular motion into linear motion, thereby compressing the gas and metal springs 403 in the sealing boxes 402. The pressure plates 404 abut against the rollers 411. Multiple sets of metal springs 403 are provided between the inner walls of the two sealing boxes 402 and the pressure plates 404. When the rollers 411 separate from the pressure plates 404, they push the pressure plates 404 to quickly reset, ensuring the continuous reciprocating swing of the guide plate 401.

[0044] Furthermore, both air outlets of the two sealed boxes 402 are connected to hollow tubes 405. The function of the hollow tubes 405 is to stably transport the compressed gas inside the sealed box 402 to the cylinder 406 to achieve power transmission. The air outlets of the two hollow tubes 405 are connected to the cylinders 406. Push plates 407 are slidably embedded in the inner walls of the two cylinders 406, pushing the transmission rod 408 to drive the guide plate 401 to swing. Springs 409 are respectively installed between the two push plates 407 and the inner walls of the two cylinders 406. When the gas pressure inside the sealed box 402 decreases, the springs 409... The resetting force pulls the push plate 407 to slide in the opposite direction, thereby causing the guide plate 401 to swing in the opposite direction, while reducing the sliding impact force of the push plate 407. A transmission rod 408 is fixedly installed on one side of each of the two push plates 407. The ends of the two transmission rods 408 away from the push plate 407 are respectively hinged to the middle of the rear side of the two guide plates 401. The hinge structure can avoid the hard interference between the linear motion of the push plate 407 and the swing motion of the guide plate 401, and prevent the transmission rod 408 and the guide plate 401 from bending or being damaged. The outer wall of the push plate 407 is in contact with the inner wall of the cylinder 406.

[0045] Specifically, the blade shaft 301 drives the connecting rod 410 and roller 411 to rotate. The roller 411 intermittently squeezes the pressure plate 404, compressing the gas in the sealed box 402. The gas is then transported through the hollow tube 405 to the cylinder 406, pushing the push plate 407 and the transmission rod 408. This causes the guide plate 401 to swing around the support rod 4. After the roller 411 separates from the pressure plate 404, the metal spring 403 and spring 409 synchronously reset, pulling the guide plate 401 to swing in the opposite direction. This cycle achieves the continuous reciprocating opening and closing action of the two guide plates 401. Since the guide plates 401 are not fully closed, the opening and closing process will create continuous shear force and vortex disturbance on the gas-powder mixture in the transition tube 103, which will initially... The unevenly mixed reagents and exhaust gas are further disrupted and recombined, allowing unreacted reagent particles to fully contact and react with harmful components in the exhaust gas, significantly improving the uniformity of gas-pharmaceutical mixing and achieving the core purpose of secondary mixing. At the same time, the reciprocating opening and closing action of the guide plate 401 can regulate the airflow direction, buffer the airflow velocity, and eliminate the deviation and turbulence of the airflow discharged from the blade cylinder 102, so that the mixed airflow enters the exhaust pipe 104 at a stable and uniform flow rate, avoiding local material accumulation and corrosion in the exhaust pipe 104 caused by uneven airflow. At the same time, it ensures that all harmful components in the exhaust gas can fully react with the reagents, improve the exhaust gas purification efficiency, ensure that the exhaust gas meets emission standards, and make the antimony crystallization of crude antimony alloy low copper salt reaction exhaust gas treatment stable.

[0046] Working principle and usage process of this invention:

[0047] After pretreatment, the exhaust gas is discharged into the filter chamber 101 through the inlet pipe 1 by the fan to complete the primary treatment of filtration and adsorption. Before treatment, the end cap of the feed pipe 201 of the agent chamber 2 is opened and the purification agent is added into the agent chamber 2 to prepare for the purification of exhaust gas.

[0048] After being treated by the filter chamber 101, the exhaust gas enters the blade cylinder 102. During the flow of the exhaust gas, the turbine blades 308 rotate. Because the fixed frame 3 is rotatably connected to the blade shaft 301 through the bearing, the turbine blades 308 rotate synchronously and drive the blade shaft 301 to rotate coaxially around the fixed frame 3. The rotation of the blade shaft 301 drives the first bevel gear 302 at its end to rotate. Through gear meshing, the second bevel gear 303 rotates, which in turn drives the vertical shaft 304 to rotate synchronously. When the vertical shaft 304 rotates, it synchronously drives the spiral blades 305 and the stirring blades 306 to rotate. The stirring blades 306 stir the medicine in the medicine chamber 2 to prevent bridging. The spiral blades 305 transport the medicine into the blade cylinder 102, realizing the automatic feeding of the medicine. Moreover, the rotation speed of the turbine blades 308 is positively correlated with the exhaust gas flow rate. The faster the rotation speed, the higher the feeding rate, realizing the self-adaptation of the medicine feeding amount and the exhaust gas volume.

[0049] After the agent enters the blade cylinder 102, it mixes with the exhaust gas. Most of the mixed airflow passes through the gap between the turbine blade 308 and the blade cylinder 102, forming a swirling mixing effect, which improves the uniformity of gas-pharmaceutical mixing. The mixed exhaust gas and agent mixture enters the transition pipe 103 through the blade cylinder 102 for secondary mixing and airflow regulation.

[0050] The blade shaft 301, near the end of the transition tube 103, synchronously drives the connecting rod 410 to rotate. When the connecting rod 410 rotates, it drives the roller 411 at its end to make a circular motion. As the two rollers 411 rotate with the connecting rod 410, they continuously abut against and squeeze the pressure plate 404, causing the two pressure plates 404 to slide within the two sealed boxes 402 and compress multiple metal springs 403. At the same time, the gas in the two sealed boxes 402 is compressed. The compressed gas is transported to the cylinder 406 through the two hollow tubes 405. After entering the cylinder 406, the gas pushes the push plate 407 to slide, which in turn pushes the guide plate 401 to swing around the support rod 4 via the transmission rod 408. When the roller 411 separates from the pressure plate 404, the elastic restoring force of the metal spring 403 pushes the pressure plate 404 to reset, and the elastic restoring force of the spring 409 pushes the push plate 407 to reset, thereby pulling the guide plate 401 to swing in the opposite direction. This cycle is repeated so that the two guide plates 401 can perform continuous reciprocating opening and closing actions with the rotation of the blade shaft 301. Moreover, the guide plates 401 are not fully closed. During the opening and closing process, they continuously disturb the gas-powder mixed airflow in the transition pipe 103, further improving the uniformity of gas-powder mixing. The exhaust gas that has completed secondary mixing and airflow regularization through the transition pipe 103 is finally discharged through the exhaust pipe 104 in compliance with standards, completing the entire exhaust gas purification process.

[0051] In summary, this invention uses turbine blades 308 as the core power source, relying on the thrust of the exhaust gas flow to achieve rotation, simultaneously completing the stirring, feeding, and reciprocating opening and closing disturbance of the guide plate, realizing the self-adaptation and unmanned operation of the exhaust gas treatment process, improving the exhaust gas purification efficiency and the stability of the device operation.

[0052] The above-mentioned models are all commercially available products in the prior art. This application is only used as an example of an embodiment and does not limit the use of other equivalent models.

[0053] All standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for purifying the tail gas of antimony crystallization salt reaction in crude antimony alloy with low copper content, characterized in that, The device includes an intake pipe (1), a filter chamber (101), a blade tube (102), a transition pipe (103), and an exhaust pipe (104) connected in sequence. A medicine chamber (2) is connected to the blade cylinder (102), and the discharge end of the medicine chamber (2) is provided with a discharge pipe (201). The fixed frame (3), blade shaft (301) and turbine blade (308) are arranged inside the blade cylinder (102). The turbine blade (308) is fixedly sleeved on the outer surface of the blade shaft (301). The blade shaft (301) is rotatably connected to the fixed frame (3). A first bevel gear (302) is fixedly arranged at one end of the blade shaft (301). A second bevel gear (303) is meshed with the first bevel gear (302). A vertical shaft (304) is fixedly arranged on one side of the second bevel gear (303). The vertical shaft (304) passes through the feed pipe (201). A spiral blade (305) and a stirring blade (306) are fixedly installed on the vertical shaft (304). The transmission assembly and the flow guide assembly are disposed inside the transition tube (103). The transmission assembly is connected to one end of the blade shaft (301) near the transition tube (103). The flow guide assembly cooperates with the transmission assembly to disturb the airflow inside the transition tube (103).

2. The antimony crystallization salt reaction tail gas purification device according to claim 1, characterized in that: The fixing frame (3) is fixedly installed on the inner wall of the blade cylinder (102). The blade shaft (301) and the fixing frame (3) are rotatably connected by bearings. The turbine blades (308) are arranged in a circumferential array along the blade shaft (301).

3. The antimony crystallization salt reaction tail gas purification device according to claim 2, characterized in that: The stirring blade (306) is disposed inside the discharge chamber of the medicine chamber (2), the spiral blade (305) is disposed inside the feed pipe (201), and the outer diameter of the spiral blade (305) is adapted to the inner wall of the feed pipe (201).

4. The antimony crystallization salt reaction tail gas purification device according to claim 3, characterized in that: Both the blade shaft (301) and the vertical shaft (304) are equipped with protective covers (307) through bearings. The discharge port of the feed pipe (201) is connected to the interior of the blade cylinder (102), and the discharge port faces the air inlet side of the turbine blade (308).

5. The antimony crystallization salt reaction tail gas purification device according to claim 1, characterized in that: The transmission assembly includes two connecting rods (410) and two rollers (411). One end of the two connecting rods (410) is fixedly connected to the end of the blade shaft (301) near the transition tube (103), and the two rollers (411) are respectively disposed at the other end of the two connecting rods (410).

6. The antimony crystallization salt reaction tail gas purification device according to claim 5, characterized in that: The flow guiding assembly includes two support rods (4) and two flow guiding plates (401). The two support rods (4) are set on the inner wall of the transition tube (103) by bearings, and the two flow guiding plates (401) are respectively fixedly sleeved on the outer surface of the two support rods (4).

7. The antimony crystallization salt reaction tail gas purification device according to claim 6, characterized in that: Both sides of the inner wall of the transition tube (103) are fixedly connected to a sealing box (402). The inner walls of the two sealing boxes (402) are slidably embedded with a pressure plate (404). The pressure plate (404) abuts against the roller (411). Multiple sets of metal springs (403) are provided between the inner walls of the two sealing boxes (402) and the pressure plate (404).

8. The antimony crystallization salt reaction tail gas purification device according to claim 7, characterized in that: The air outlets of the two sealed boxes (402) are connected to hollow tubes (405), and the air outlets of the two hollow tubes (405) are connected to cylinders (406). Push plates (407) are slidably embedded in the inner walls of the two cylinders (406). Springs (409) are provided between the two push plates (407) and the inner walls of the two cylinders (406), respectively. A transmission rod (408) is fixedly provided on one side of each of the two push plates (407).

9. The antimony crystallization salt reaction tail gas purification device according to claim 8, characterized in that: The ends of the two transmission rods (408) away from the push plate (407) are respectively hinged to the rear middle of the two guide plates (401), and the outer wall of the push plate (407) is in contact with the inner wall of the cylinder (406).

10. The antimony crystallization salt reaction tail gas purification device according to claim 1, characterized in that: The air intake pipe (1) and the filter chamber (101), the filter chamber (101) and the blade cylinder (102), the blade cylinder (102) and the transition pipe (103), and the transition pipe (103) and the exhaust pipe (104) are all sealed by flanges. The filter chamber (101) is filled with adsorption filter material.

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