Anti-blocking flue gas treatment device for lead bullion preparation

Abstract

The invention relates to the technical field of air pollution control equipment, in particular to an anti-blocking flue gas treatment device for crude lead preparation. The device comprises a ventilation mechanism, the ventilation mechanism comprises a rotating channel used for driving to-be-treated flue gas to rotate, the rotating channel is communicated with a gas inlet, a driving mechanism is arranged at one end of the rotating channel, and a blocking mechanism is arranged at the end, away from the driving mechanism, of the rotating channel; the driving mechanism is used for driving flue gas to move forwards in the rotating channel, the rotating channel can increase the speed of flue gas moving forwards in the rotating channel, and when flue gas rotates in the rotating channel, under the action of the centrifugal force of the flue gas and the friction force of the inner wall of the rotating channel, the flue gas can move forwards in the rotating channel. And large-particle impurities in the flue gas can be intercepted on the inner wall of the rotating channel. The spraying mechanism forms a water curtain in the cleaning cavity so as to absorb small-particle impurities and water-soluble gas in the flue gas, and meanwhile the water curtain formed in the cleaning cavity generates driving force opposite to the moving direction of the flue gas.

Description

Technical Field

[0001] The invention relates to the technical field of air pollution prevention and control equipment, and in particular to an anti-clogging fume treatment device for crude lead preparation. Background Art

[0002] Since flue gas containing pollutants such as sulfur dioxide, particulate matter, and heavy metals is generated during the preparation of crude lead, the flue gas needs to be treated before it can be discharged in order to reduce the emission of atmospheric pollutants, recycle resources, and prevent equipment damage. In the prior art, the tail gas after the preparation of crude lead is mainly removed by cyclone separation and spray washing to remove impurities such as solid particles and dust.

[0003] However, since the water curtain is set on the path of the ventilation duct, the water curtain will be tilted by the smoke. That is to say, the pollutants mixed in the water curtain (or water mist) will move with the water flow to the subsequent equipment to cause pollution. In addition, the water flow is driven by the flowing gas in the pipeline. After the water curtain is blown crooked, the mixing time with the pollutants in the smoke becomes shorter, and the water curtain's absorption effect on pollutants will be weakened.

[0004] In view of this, we propose an anti-clogging flue gas treatment device for crude lead preparation to improve the deficiencies in the prior art. Summary of the invention

[0005] In view of the technical problems existing in the prior art, the present invention provides an anti-clogging flue gas treatment device for crude lead preparation to solve the problem that after the water curtain is blown crooked in the above-mentioned background technology, the absorption effect of the water curtain on pollutants is weakened.

[0006] In order to solve the above-mentioned problems, the technical solution of the present invention is as follows: a fume treatment device for crude lead preparation with anti-clogging, comprising a ventilation mechanism, the ventilation mechanism comprising a rotating channel for driving the fume to be treated to rotate, the rotating channel being connected to an air inlet, one end of the rotating channel being provided with a driving mechanism, the rotating channel being provided with a blocking mechanism at an end away from the driving mechanism, the blocking mechanism at least comprising a cleaning chamber, the cleaning chamber being provided with a spraying mechanism;

[0007] The driving mechanism is used to drive the smoke to move forward in the rotating channel, and the rotating channel can accelerate the speed of the smoke moving forward inside it, and the rotating channel can intercept large particles of impurities in the smoke;

[0008] The spray mechanism forms a water curtain inside the cleaning chamber to absorb small particle impurities and water-soluble gases in the flue gas. The water curtain formed in the cleaning chamber can weaken the moving speed of the flue gas to increase the time for the water curtain to clean the flue gas.

[0009] The blocking mechanism is used to intercept the water curtain after absorbing impurities, and the blocking mechanism can increase the path that the smoke passes through in the cleaning chamber.

[0010] Based on the above description, it can be seen that compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The driving mechanism is used to drive the smoke forward in the rotating channel, and the rotating channel can speed up the speed of the smoke inside it. When the smoke rotates in the rotating channel, under the action of the centrifugal force of the smoke and the friction of the inner wall of the rotating channel, the large particles of impurities in the smoke will be trapped on the inner wall of the rotating channel. The spray mechanism forms a water curtain inside the cleaning chamber to absorb small particles of impurities and water-soluble gases in the smoke. At the same time, the water curtain formed in the cleaning chamber generates a driving force in the opposite direction of the smoke movement, thereby weakening the movement speed of the smoke and increasing the time for the water curtain to clean the smoke.

[0012] 2. The blocking mechanism is used to intercept the water curtain after absorbing impurities, preventing the contaminated water from moving with the flue gas to the subsequent equipment and causing pollution, and the blocking mechanism can increase the path that the flue gas travels in the cleaning chamber.

[0013] On the basis of the above technical solution, the present invention can also make the following improvements:

[0014] As a further improvement of the technical solution, the rotating channel includes a straight cylindrical portion and a tapered portion, the straight cylindrical portion is connected to the tapered portion, and the radius of the tapered portion gradually decreases along the direction of the smoke moving path.

[0015] As a further improvement of the present technical solution, the air intake direction of the air intake port is perpendicular to the axial direction of the straight tube portion.

[0016] The beneficial effect of adopting the above-mentioned improvement scheme is that the flue gas to be treated is introduced into the rotating channel through the air inlet in a direction perpendicular to the axial direction of the straight cylinder portion, and the rotating fan generates a driving force along the axial direction of the rotating channel. Under the combined action of the centrifugal force of the flue gas and the friction force of the inner wall of the rotating channel, the inner wall of the rotating channel intercepts large particles of impurities in the flue gas.

[0017] As a further improvement of the present technical solution, the driving mechanism includes a fan arranged in the straight tube portion, and the fan is used to provide positive pressure to a side of the straight tube portion close to the air inlet.

[0018] As a further improvement of the technical solution, the driving mechanism further comprises a mounting frame arranged on the inner wall of the straight tube portion, a motor is mounted on the mounting frame, and an output shaft of the motor is coaxially connected to the fan.

[0019] The beneficial effect of adopting the above-mentioned improvement scheme is that the motor drives the fan coaxially connected to its own output shaft to rotate, and the fan forms a positive pressure on the side of the rotating channel close to the air inlet (where the smoke is introduced), while driving the smoke to rotate around the inner wall of the rotating channel and giving the smoke a driving force to move axially along the rotating channel.

[0020] As a further improvement of the technical solution, the blocking mechanism includes a cleaning chamber connected to the tapered portion, the cleaning chamber is provided with a blocking arm on a side away from the tapered portion, and the cleaning chamber is provided with an air outlet at the top of the cleaning chamber.

[0021] As a further improvement of the technical solution, the barrier arm is inclined toward a side away from the tapered portion.

[0022] As a further improvement of the technical solution, a plurality of horizontally arranged damping grooves are provided on the barrier arm, and guide grooves are provided at both ends of the barrier arm which are away from each other from the plurality of damping grooves, and the guide grooves are perpendicular to the plurality of damping grooves.

[0023] The beneficial effect of adopting the above-mentioned improvement scheme is that when the contaminated water flows to the barrier arm position under the action of gravity, the inclined barrier arm will change the flow direction of the water, so that the water flows along the inclined direction of the barrier arm, and the residence time of the water at the barrier arm is increased. When the water flows through the damping groove, the flow of the water is hindered due to the structure of the groove, and the water will form eddies or turbulence in the groove, which consumes the kinetic energy of the water flow and reduces the speed of the water flow. At the same time, the water will accumulate in the damping groove, increasing the possibility of the water being intercepted by the barrier arm, so that more water can be blocked on the barrier arm instead of continuing to flow directly with the smoke or other airflows.

[0024] Furthermore, the existence of the barrier arm itself will hinder the flow of smoke, preventing the smoke from flowing smoothly along the original straight line direction. Since the barrier arm is set at an angle, when the smoke hits the barrier arm, it will be forced to change the flow direction and flow along the surface of the barrier arm and the surrounding space, thereby increasing the length of the smoke flow path in the horizontal direction. Multiple horizontally arranged damping grooves will cause more disturbances and eddies in the smoke when it flows through the barrier arm. When the smoke passes through the damping groove, a complex flow state will be formed in the groove. It is no longer a simple straight line flow, but shuttles back and forth and rotates in the groove, which greatly increases the length of the smoke flow path in the direction perpendicular to the barrier arm.

[0025] As a further improvement of the technical solution, the spray mechanism includes a turbine blade, the rotating shaft of the turbine blade is rotatably connected to the barrier arm, and the turbine blade located in the cleaning chamber is used to form a positive pressure toward the side close to the conical portion.

[0026] As a further improvement of the present technical solution, the spray mechanism further comprises a spray gun, which is connected to a water pump and is used to spray a high-pressure water column into the cleaning chamber, and the water column sprayed by the spray gun is located on one side of the axis of the turbine blade.

[0027] The beneficial effect of adopting the above-mentioned improvement scheme is that the water pump sprays a high-pressure water column into the cleaning chamber through the spray gun. When the water column is sprayed to the edge of the turbine blade, the movement direction and shape of the water column change due to the obstruction and impact of the turbine blade. The high-speed water column will be broken into many small water droplets under the impact, and these water droplets will spread in the cleaning chamber to form a layer of water curtain. The water curtain greatly increases the contact area between water and smoke.

[0028] At the same time, the turbine blades rotate under the impact of the water column, generating a driving force on the surrounding flue gas in the opposite direction of the flue gas movement. After the flue gas flow speed slows down, the residence time in the cleaning chamber is prolonged. The water curtain continues to exist in the cleaning chamber, so the flue gas has more time to contact and interact with the water curtain. In this process, the water-soluble gases in the flue gas have more time to dissolve in the water, and small particles of impurities have more opportunities to collide with water droplets and be captured. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0031] Figure 2 It is a partially cutaway perspective view of the present invention;

[0032] Figure 3 It is a cut-away left side view of the ventilation mechanism of the present invention;

[0033] Figure 4 is a cutaway front view of the ventilation mechanism of the present invention;

[0034] Figure 5 It is a front structural diagram of the driving mechanism of the present invention;

[0035] Figure 6 is a cutaway perspective view of the blocking mechanism of the present invention;

[0036] Figure 7 is a cutaway front view of the blocking mechanism of the present invention;

[0037] Figure 8 It is a front structural diagram of the spray mechanism of the present invention.

[0038] The meaning of each number in the figure is:

[0039] 100, ventilation mechanism; 110, rotating channel; 111, straight tube portion; 112, tapered portion; 120, air inlet; 130, air outlet;

[0040] 200, driving mechanism; 210, fan; 220, mounting frame; 230, motor;

[0041] 300, blocking mechanism; 310, cleaning chamber; 320, blocking arm; 321, damping groove;

[0042] 400. Spraying mechanism; 410. Spray gun; 420. Turbine blade. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in 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.

[0044] In order to prevent the wind force that drives the flue gas to move from blowing the water curtain askew, thereby causing the contaminated water that has absorbed water-soluble gases and small particulate impurities to flow into the subsequent equipment, the blocking device used in the present application, namely the blocking mechanism 300 to be described below, is arranged at an angle, and the height of the air outlet 130 is opened at the top, so that the amount of contaminated water that enters the subsequent equipment along with the flue gas flow will be greatly reduced, and the contact time between the flue gas and the water curtain will be increased, thereby improving the washing effect of the flue gas.

[0045] See also Figure 1 and Figure 2 As shown, the purpose of this embodiment is to provide an anti-clogging fume treatment device for crude lead preparation, including a ventilation mechanism 100, the ventilation mechanism 100 includes a rotating channel 110 for driving the fume to be treated to rotate, the rotating channel 110 is connected to an air inlet 120, one end of the rotating channel 110 is provided with a driving mechanism 200, and the rotating channel 110 is provided with a blocking mechanism 300 at one end away from the driving mechanism 200, the blocking mechanism 300 includes at least a cleaning chamber 310, and a spray mechanism 400 is provided in the cleaning chamber 310;

[0046] The driving mechanism 200 is used to drive the smoke to move forward in the rotating channel 110, and the rotating channel 110 can accelerate the speed of the smoke moving forward inside it, and the rotating channel 110 can intercept large particles of impurities in the smoke;

[0047] The spray mechanism 400 forms a water curtain inside the cleaning chamber 310 to absorb small particles of impurities and water-soluble gases in the flue gas. The water curtain formed in the cleaning chamber 310 can reduce the moving speed of the flue gas to increase the time for the water curtain to clean the flue gas.

[0048] The blocking mechanism 300 is used to intercept the water curtain after absorbing impurities, and the blocking mechanism 300 can increase the path that the smoke passes through in the cleaning chamber 310.

[0049] Working principle:

[0050] First, the smoke to be treated is introduced into the rotating channel 110 through the air inlet 120. Since the cross-sectional shape of the rotating channel 110 is circular, the smoke will rotate after entering the interior thereof.

[0051] Next, the power of the driving mechanism 200 is turned on, and the driving mechanism 200 generates an axial driving force into the rotating channel 110, so that the flue gas can move forward along the axial direction of the rotating channel 110 while rotating. Therefore, under the combined action of the rotating centrifugal force and the friction resistance of the inner wall of the rotating channel 110, the large particles of impurities contained in the flue gas are retained on the inner wall of the rotating channel 110.

[0052] When the smoke enters the cleaning chamber 310, the spray mechanism 400 forms a water curtain inside the cleaning chamber 310 to absorb small particles of impurities and water-soluble gases in the smoke. At the same time, the water curtain formed in the cleaning chamber 310 generates a driving force in the opposite direction of the smoke movement, thereby weakening the movement speed of the smoke and increasing the time for the water curtain to clean the smoke.

[0053] When small particles of impurities and water-soluble gases in the flue gas are absorbed by the water curtain, the water curtain will be contaminated, and the blocking mechanism 300 can intercept the water curtain after absorbing the impurities, preventing the contaminated water from moving with the flue gas to the subsequent equipment and causing cross contamination. The inclined setting of the blocking mechanism 300 can increase the path of the flue gas in the cleaning chamber 310, so as to increase the mixing time of the flue gas and the water curtain, thereby improving the cleaning effect.

[0054] like Figure 3 and Figure 4 As shown, the rotating channel 110 includes a straight tube portion 111 and a tapered portion 112 . The straight tube portion 111 is connected to the tapered portion 112 . The radius of the tapered portion 112 gradually decreases along the direction of the smoke moving path.

[0055] The improvement lies in that the air intake direction of the air intake port 120 is perpendicular to the axial direction of the straight tube portion 111 .

[0056] It should be noted that the treated flue gas (i.e., the exhaust gas generated by the preparation of crude lead) is introduced into the rotating channel 110 in a direction perpendicular to the axial direction of the straight cylinder portion 111, and at the same time, the driving mechanism 200 generates a driving force along the axial direction of the rotating channel 110. Under the combined action of the centrifugal force of the flue gas and the friction force of the inner wall of the rotating channel 110, the inner wall of the rotating channel 110 intercepts large particles of impurities in the flue gas.

[0057] Principle of centrifugal force:

[0058] (1) Generate centrifugal force: The smoke enters the rotating channel 110 in a direction perpendicular to the axial direction of the straight tube portion 111. As the smoke rotates around the axial direction of the rotating channel 110, the particles in the smoke are affected by the centrifugal force according to the principle of circular motion. Centrifugal force F = mω 2 r, where m is the mass of the particle, ω is the angular velocity of rotation, and r is the distance between the particle and the axis of rotation. For large impurities, their mass m is relatively large, and under the same rotation conditions, the centrifugal force they experience is greater.

[0059] (2) Moving toward the wall: Under the action of centrifugal force, large impurities tend to move toward the inner wall of the rotating channel 110, just like when a washing machine is spinning, the water in the clothes is thrown toward the wall of the drum under the action of centrifugal force. This centrifugal force drives the large impurities to quickly approach the inner wall of the rotating channel 110, creating conditions for them to be trapped by the inner wall.

[0060] Friction principle:

[0061] (1) The inner wall provides friction: The inner wall of the rotating channel 110 is relatively rough. When large impurities approach and contact the inner wall under the action of centrifugal force, the inner wall will generate friction on the particles. The magnitude of the friction is related to the positive pressure between the particles and the inner wall and the roughness of the inner wall. According to the friction formula F f =μF N , where F f is the friction force, μ is the friction coefficient, which depends on the inner wall material and particle characteristics, F N It is positive pressure. Under the action of centrifugal force, large particles of impurities exert a greater positive pressure on the inner wall, thereby generating greater friction.

[0062] (2) Preventing particle movement: The direction of this friction force is opposite to the direction of movement of the particles relative to the inner wall, which will prevent large particles from sliding or rolling along the inner wall. When the friction force is large enough, large particles can stop moving after contacting the inner wall, and thus be successfully intercepted by the inner wall and separated from other components in the flue gas.

[0063] The auxiliary function of the tapered portion 112 is:

[0064] (1) Accelerating particle movement: The diameter of the tapered portion 112 of the rotating channel 110 gradually decreases. According to the principle of fluid continuity, when the flue gas enters the tapered portion 112 from the straight tube portion 111, the flow rate of the flue gas will gradually increase due to the gradual decrease in the cross-sectional area of ​​the rotating channel 110. For large impurity particles that have already approached the inner wall under the action of centrifugal force, the increase in the flue gas velocity will further push them to move in the direction of the smaller diameter of the tapered portion 112, making the contact between the particles and the inner wall closer, thereby enhancing the particle retention effect of the inner wall.

[0065] (2) Enhanced separation effect: As the diameter of the conical portion 112 decreases, large particles of impurities will be more concentratedly retained on the inner wall of the conical portion 112 under the combined action of centrifugal force and friction, while the relatively pure flue gas after separation can be discharged from the small mouth of the conical portion 112, thereby achieving more effective separation of large particles of impurities and flue gas.

[0066] exist Figure 5 In the embodiment, the driving mechanism 200 includes a fan 210 disposed in the straight tube portion 111 , and the fan 210 is used to provide positive pressure to a side of the straight tube portion 111 close to the air inlet 120 .

[0067] The improvement lies in that the driving mechanism 200 further comprises a mounting frame 220 arranged on the inner wall of the straight tube portion 111 , a motor 230 is mounted on the mounting frame 220 , and an output shaft of the motor 230 is coaxially connected to the fan 210 .

[0068] That is to say, after the power of the motor 230 is turned on, the motor 230 drives the fan 210 coaxially connected to its own output shaft to rotate, and the fan 210 forms a positive pressure on the side of the rotating channel 110 close to the air inlet 120 (for the introduction of flue gas), while driving the flue gas to rotate around the inner wall of the rotating channel 110, giving the flue gas a driving force to move axially along the rotating channel 110.

[0069] Since the water curtain is arranged on the path of the rotating channel 110, the water curtain will be tilted by the smoke, that is, the pollutants mixed in the water curtain (or water mist) will move with the water flow to the subsequent equipment to cause pollution.

[0070] Next, through Figure 6-Figure 7 The specific structure of the blocking mechanism 300 is disclosed. The blocking mechanism 300 includes a cleaning chamber 310 connected to the tapered portion 112 . The cleaning chamber 310 is provided with a blocking arm 320 on a side away from the tapered portion 112 . The cleaning chamber 310 is provided with an air outlet 130 at the top of the cleaning chamber 310 .

[0071] Furthermore, the blocking arm 320 is tilted toward a side away from the tapered portion 112 .

[0072] In addition, a plurality of horizontally arranged damping grooves 321 are formed on the barrier arm 320 , and guide grooves are formed at both ends of the plurality of damping grooves 321 which are away from each other, and the guide grooves are perpendicular to the plurality of damping grooves 321 .

[0073] Principle of intercepting polluted water:

[0074] (1) The role of the inclined barrier arm 320: The barrier arm 320 is inclined toward the side away from the conical portion 112. When the contaminated water flows to the barrier arm 320 under the action of gravity and other forces (such as the impact force generated by the flow of smoke, etc.), the inclined barrier arm 320 will change the flow direction of the water, causing the water to flow along the inclined direction of the barrier arm 320, thereby playing a role in initially blocking and guiding the water flow, thereby increasing the residence time of the water at the barrier arm 320.

[0075] (2) Function of the damping groove 321: The damping grooves 321 arranged horizontally on the barrier arm 320 can increase the contact area and friction between the water and the barrier arm 320. When water flows through the damping groove 321, the flow of water is hindered due to the structure of the groove, and the water will form eddies or turbulence in the groove, which consumes the kinetic energy of the water flow and reduces the speed of the water flow. At the same time, water will accumulate in the damping groove 321, increasing the possibility of water being intercepted by the barrier arm 320, so that more water can be blocked on the barrier arm 320 instead of continuing to flow directly with the smoke or other airflow.

[0076] (3) Function of the guide groove: When the amount of water accumulated in the damping groove 321 reaches a certain level, the water will be guided through the guide groove. The guide groove guides the water to flow in a specific direction, so that the water can be distributed and accumulated on the barrier arm 320 in a more orderly manner, avoiding the situation where the water accumulates excessively in a certain area and causes overflow or cannot be effectively intercepted, and further improving the interception effect of the barrier arm 320 on the contaminated water.

[0077] The principle of increasing the movement path of the smoke in the cleaning chamber 310 is as follows:

[0078] (1) Changing the flow direction of smoke: The existence of the barrier arm 320 itself will hinder the flow of smoke, so that the smoke cannot flow smoothly along the original straight direction. Since the barrier arm 320 is set at an angle, when the smoke hits the barrier arm 320, it will be forced to change the flow direction and flow along the surface of the barrier arm 320 and the surrounding space, thereby increasing the flow path length of the smoke in the horizontal direction.

[0079] (2) Disturbance caused by the damping grooves 321: Multiple horizontally arranged damping grooves 321 will cause more disturbances and eddies in the smoke when it flows through the barrier arm 320. When the smoke passes through the damping grooves 321, a complex flow state will be formed in the grooves. Instead of a simple straight-line flow, the smoke will shuttle back and forth and rotate in the grooves, which greatly increases the flow path length of the smoke in the direction perpendicular to the barrier arm 320.

[0080] (3) Guiding effect of the guide groove: The guide groove not only guides water, but also has a certain guiding effect on smoke. The smoke will be affected by the guide groove during the flow process, and will flow along the direction guided by the guide groove, and will be guided from one damping groove 321 area to another damping groove 321 area, or from one part of the barrier arm 320 to another part, so that the smoke forms a more complex and tortuous flow path around the barrier arm 320, further increasing the overall movement path of the smoke in the cleaning chamber 310.

[0081] The water flow is driven by the flowing gas in the pipe. When the water curtain is blown crookedly, the mixing time between it and the pollutants in the smoke becomes shorter, so the absorption effect of the water curtain on the pollutants will be weakened.

[0082] Based on the above description, Figure 8 The preferred effect of the spray mechanism 400 is explained. The spray mechanism 400 includes a turbine blade 420. The rotating shaft of the turbine blade 420 is rotatably connected to the blocking arm 320. The turbine blade 420 located in the cleaning chamber 310 is used to form a positive pressure toward the side close to the conical portion 112.

[0083] Furthermore, the spray mechanism 400 also includes a spray gun 410 , which is connected to a water pump to spray a high-pressure water column into the cleaning chamber 310 . The water column sprayed by the spray gun 410 is located on one side of the axis of the turbine blade 420 .

[0084] First, the water curtain is formed: the water pump sprays a high-pressure water column into the cleaning chamber 310 through the spray gun 410. When the water column is sprayed to the edge of the turbine blade 420, the movement direction and shape of the water column are changed due to the obstruction and impact of the turbine blade 420. The high-speed water column will be broken into many small water droplets under the impact, and these water droplets will spread in the cleaning chamber 310 to form a layer of water curtain.

[0085] The water curtain greatly increases the contact area between water and flue gas. According to the principle of like dissolves like, water-soluble gases in flue gas can quickly dissolve in the water droplets in the water curtain. For example, water-soluble gases such as sulfur dioxide will react with water to produce sulfurous acid, which will be absorbed by water and removed from flue gas.

[0086] For small particles of impurities in the flue gas, on the one hand, when the particles come into contact with the water droplets in the water curtain, they will be adsorbed by the tension of the water droplet surface, just like dust will stick to the surface of a wet object; on the other hand, when small particles of impurities collide with high-speed moving water droplets, they will be embedded in the water droplets due to inertia, and separated from the flue gas as the water droplets settle due to gravity, thereby achieving the capture and cleaning of small particles of impurities.

[0087] At the same time, the turbine blades 420 rotate under the impact of the water column. Due to the special shape and rotation direction of the turbine blades 420, a driving force opposite to the moving direction of the smoke is generated on the surrounding flue gas. According to Newton's third law, the action of force is mutual. The turbine blades 420 give the flue gas a reverse force, which slows down the flow of the flue gas. After the flow of the flue gas slows down, the residence time in the cleaning chamber 310 is prolonged. The water curtain continues to exist in the cleaning chamber 310, so that the flue gas has more time to contact and interact with the water curtain. In this process, the water-soluble gases in the flue gas have more time to dissolve in the water, and small particles of impurities have more opportunities to collide with water droplets and be captured, thereby improving the cleaning effect of water-soluble gases and small particles of impurities in the flue gas.

[0088] In summary, the working principle of the present invention is as follows:

[0089] First, the flue gas to be treated is introduced into the rotating channel 110 through the air inlet 120 in a direction perpendicular to the axial direction of the straight cylinder portion 111, and the rotating fan 210 generates a driving force along the axial direction of the rotating channel 110. Under the combined action of the centrifugal force of the flue gas and the friction force of the inner wall of the rotating channel 110, the inner wall of the rotating channel 110 intercepts large particles of impurities in the flue gas.

[0090] When the contaminated water flows to the position of the barrier arm 320 under the action of gravity, the inclined barrier arm 320 will change the flow direction of the water, so that the water flows along the inclined direction of the barrier arm 320, and the residence time of the water at the barrier arm 320 is increased. When the water flows through the damping groove 321, the flow of the water is hindered due to the structure of the groove, and the water will form eddies or turbulent flows in the groove, consuming the kinetic energy of the water flow and reducing the speed of the water flow. At the same time, the water will accumulate in the damping groove 321, increasing the possibility of the water being intercepted by the barrier arm 320, so that more water can be blocked on the barrier arm 320 instead of continuing to flow directly with the smoke or other airflows.

[0091] The existence of the barrier arm 320 itself will hinder the flow of smoke, so that the smoke cannot flow smoothly along the original straight line direction. Since the barrier arm 320 is set at an angle, when the smoke hits the barrier arm 320, it will be forced to change the flow direction and flow along the surface of the barrier arm 320 and the surrounding space, thereby increasing the length of the flow path of the smoke in the horizontal direction. Multiple horizontally arranged damping grooves 321 will cause more disturbances and eddies in the smoke when it flows through the barrier arm 320. When the smoke passes through the damping groove 321, a complex flow state will be formed in the groove. It is no longer a simple straight line flow, but shuttles back and forth and rotates in the groove, which greatly increases the length of the flow path of the smoke in the direction perpendicular to the barrier arm 320.

[0092] The water pump sprays a high-pressure water column into the cleaning chamber 310 through the spray gun 410. When the water column is sprayed to the edge of the turbine blade 420, the direction and shape of the water column change due to the obstruction and impact of the turbine blade 420. The high-speed water column will be broken into many small water droplets under the impact, and these water droplets will spread in the cleaning chamber 310 to form a layer of water curtain. The water curtain greatly increases the contact area between water and smoke. According to the principle of like dissolves like, the water-soluble gas in the smoke can quickly dissolve in the water droplets in the water curtain.

[0093] At the same time, the turbine blades 420 rotate under the impact of the water column, generating a driving force on the surrounding flue gas in the opposite direction of the flue gas movement. The turbine blades 420 give the flue gas a reverse force, slowing down the flow of the flue gas. After the flow of the flue gas slows down, the residence time in the cleaning chamber 310 is prolonged. The water curtain continues to exist in the cleaning chamber 310, so that the flue gas has more time to contact and interact with the water curtain. In this process, the water-soluble gases in the flue gas have more time to dissolve in the water, and small particles of impurities have more opportunities to collide with water droplets and be captured, thereby improving the cleaning effect of water-soluble gases and small particles of impurities in the flue gas.

[0094] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fume treatment device for preventing clogging in crude lead preparation, characterized in that: The invention comprises a ventilation mechanism (100), wherein the ventilation mechanism (100) comprises a rotating channel (110) for driving the smoke to be treated to rotate, the rotating channel (110) is connected to an air inlet (120), one end of the rotating channel (110) is provided with a driving mechanism (200), the rotating channel (110) is provided with a blocking mechanism (300) at one end away from the driving mechanism (200), the blocking mechanism (300) comprises at least a cleaning chamber (310), and a spraying mechanism (400) is provided in the cleaning chamber (310); The driving mechanism (200) is used to drive the smoke to move forward in the rotating channel (110), and the rotating channel (110) can accelerate the speed of the smoke moving forward inside the rotating channel (110), and the rotating channel (110) can intercept large particles of impurities in the smoke; The spray mechanism (400) forms a water curtain inside the cleaning chamber (310) to absorb small particle impurities and water-soluble gases in the smoke. The water curtain formed in the cleaning chamber (310) can reduce the moving speed of the smoke, thereby increasing the time for the water curtain to clean the smoke. The blocking mechanism (300) is used to intercept the water curtain after absorbing impurities, and the blocking mechanism (300) can increase the path that the smoke passes through in the cleaning chamber (310).

2. The anti-clogging fume treatment device for crude lead preparation according to claim 1, characterized in that: The rotating channel (110) comprises a straight cylindrical portion (111) and a tapered portion (112); the straight cylindrical portion (111) is connected to the tapered portion (112); and the radius of the tapered portion (112) gradually decreases along the direction of the smoke moving path.

3. The anti-clogging fume treatment device for crude lead preparation according to claim 2, characterized in that: The air intake direction of the air intake port (120) is perpendicular to the axial direction of the straight tube portion (111).

4. The anti-clogging fume treatment device for crude lead preparation according to claim 2, characterized in that: The driving mechanism (200) comprises a fan (210) disposed in the straight tube portion (111), and the fan (210) is used to provide positive pressure to a side of the straight tube portion (111) close to the air inlet (120).

5. The anti-clogging fume treatment device for crude lead preparation according to claim 4, characterized in that: The driving mechanism (200) further comprises a mounting frame (220) arranged on the inner wall of the straight tube portion (111), a motor (230) being mounted on the mounting frame (220), and an output shaft of the motor (230) being coaxially connected to the fan (210).

6. The anti-clogging fume treatment device for crude lead preparation according to claim 2, characterized in that: The blocking mechanism (300) comprises a cleaning chamber (310) connected to the conical portion (112); a blocking arm (320) is provided on a side of the cleaning chamber (310) away from the conical portion (112); and an air outlet (130) is provided at the top of the cleaning chamber (310).

7. The anti-clogging fume treatment device for crude lead preparation according to claim 6, characterized in that: The blocking arm (320) is arranged to be inclined toward a side away from the tapered portion (112).

8. The anti-clogging fume treatment device for crude lead preparation according to claim 6, characterized in that: The barrier arm (320) is provided with a plurality of horizontally arranged damping grooves (321), and the barrier arm (320) is provided with guide grooves at both ends of the plurality of damping grooves (321) that are away from each other, and the guide grooves are perpendicular to the plurality of damping grooves (321).

9. The anti-clogging fume treatment device for crude lead preparation according to claim 6, characterized in that: The spray mechanism (400) comprises a turbine blade (420), the rotation shaft of the turbine blade (420) being rotatably connected to the barrier arm (320), and the turbine blade (420) located in the cleaning chamber (310) is used to form a positive pressure toward a side close to the conical portion (112).

10. The anti-clogging fume treatment device for crude lead production according to claim 9, characterized in that: The spray mechanism (400) further comprises a spray gun (410), which is connected to a water pump and is used to spray a high-pressure water column into the cleaning chamber (310). The water column sprayed by the spray gun (410) is located on one side of the axis of the turbine blade (420).

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