A cold-rolled steel strip acid mist purification device

Abstract

The application discloses a cold-rolled steel strip acid mist purification device and belongs to the technical field of acid mist purification. The cold-rolled steel strip acid mist purification device comprises a supporting frame, a purification bin is arranged in the supporting frame, a spraying pump is fixedly connected to the top of the purification bin, a liquid inlet is arranged in the spraying pump, a fixing frame is fixedly connected to the bottom outer side of the liquid inlet, and a plurality of spraying heads are fixedly connected to the bottom of the fixing frame. When the device is started, the hollow rotating shaft, the protective shell, the fixed ventilation block, the bevel gear one, the bevel gear two, the rotating shaft one and the conical flow guide block are matched, so that the airflow is sprayed out from the air outlet nozzle, the air outlet disc is continuously rotated, the acid mist airflow is fully mixed with the alkali liquid inside, the alkali liquid sprayed from the upper part flows through the conical flow guide block and the flow guide ring to form two layers of water curtains, the acid mist airflow after primary treatment is in contact with the water curtains, secondary treatment is formed, acid mist treatment is more thorough, and the treatment efficiency of the device is improved.

Description

Technical Field

[0001] This invention belongs to the field of acid mist purification technology, specifically relating to an acid mist purification device for cold-rolled steel strip. Background Technology

[0002] As industrialization increases, the resulting air pollution problems are attracting more and more attention. These harmful gases must undergo strict treatment to meet the comprehensive atmospheric emission standards before being released into the atmosphere. Currently, a large amount of acid mist is generated during the pickling process in chemical and electroplating production and processing, polluting the air and affecting health. Acid mist purification towers are commonly used purification equipment in waste gas treatment projects. Because acidic gases are very harmful to human health and the environment, these harmful gases must usually undergo strict treatment to meet the comprehensive atmospheric pollution emission standards before being released into the atmosphere.

[0003] Chinese invention patent CN118267843A discloses an acid mist purification machine based on alkali neutralization, including a treatment cylinder and a support frame. The treatment cylinder is disposed inside the support frame and fixedly connected to the inner wall of the support frame. One side of the bottom of the treatment cylinder is connected to an external alkali storage device through a connecting pipe. The machine also includes: an air inlet device disposed inside the treatment cylinder, used to discharge the waste gas to be treated into the treatment cylinder; the air inlet device is fixedly connected to the inner wall of the treatment cylinder through a bracket; and an air inlet end of the air inlet device penetrates through the treatment cylinder and extends to the outside of the treatment cylinder; and a spray device disposed at the top of the treatment cylinder, used to atomize the alkali solution and spray it into the treatment cylinder. In the aforementioned application, when the equipment is started, the bottom air outlet directly sprays out airflow to mix with the alkali solution, while the air outlet of the air outlet device remains fixed, causing the airflow to always maintain a single angle to mix with the alkali solution, while there is no flow inside the alkali solution. This results in poor mixing of the airflow and alkali solution, which easily leads to a deterioration in the acid mist treatment effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an acid mist purification device for cold-rolled steel strip, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides an acid mist purification device for cold-rolled steel strip, including a support frame, a purification chamber assembled inside the support frame, a spray pump fixedly connected to the top of the purification chamber, a liquid inlet assembled inside the spray pump, a fixing frame fixedly connected to the bottom outer side of the liquid inlet, a plurality of spray heads fixedly connected to the bottom of the fixing frame, an air inlet pipe fixedly connected to the bottom of the purification chamber, and an air outlet fixedly connected to the top of the purification chamber. A hollow shaft is rotatably connected to the top of the air intake pipe. A sealed bearing is fixedly connected to the connection between the hollow shaft and the air intake pipe. A drive gear set is fixedly connected to the outer bottom of the hollow shaft. A motor is fixedly connected to the bottom of the drive gear set. Multiple support plates are fixedly connected to the inner surface of the purification chamber. A protective shell is fixedly connected to the inner side of the support plates. The outer side of the hollow shaft is rotatably connected to the inner side of the protective shell. A bevel gear is fixedly connected to the outer side of the hollow shaft. Multiple shafts are rotatably connected to the inner side of the protective shell. A bevel gear is fixedly connected to the outer side of each shaft, and the bevel gear meshes with the bevel gear. A fixed ventilation block is fixedly connected to the top of the inner side of the protective shell. The bottom of the fixed ventilation block is rotatably connected to the top of the shaft. An air outlet plate is fixedly connected to the bottom of the shaft. Multiple air outlet nozzles are fixedly connected to the bottom surface of the air outlet plate. A conical guide block is fixedly connected to the top of the protective shell. A guide ring is fixedly connected to the inner wall surface of the purification chamber. The system is equipped with air outlet nozzles and conical guide blocks. When the equipment starts up, it works in conjunction with a hollow rotating shaft, protective shell, fixed vent block, bevel gear one, bevel gear two, rotating shaft one, and conical guide blocks to allow airflow to enter the fixed vent block from the hollow rotating shaft and then be ejected from the air outlet nozzles on the air outlet plate. At the same time, the air outlet plate rotates continuously, which allows the acid mist airflow to mix thoroughly with the alkaline solution. Meanwhile, the alkaline solution sprayed from above flows through the conical guide block and guide ring to form two layers of water curtain. This allows the acid mist airflow after the first treatment to come into contact with the water curtain, thus forming a secondary treatment, making the acid mist treatment more thorough and improving the equipment's treatment efficiency.

[0006] According to the above technical solution, the hollow rotating shaft, the fixed vent block and the first rotating shaft are internally connected, and a sealed bearing is fixedly connected at the connection between the first rotating shaft and the fixed vent block.

[0007] According to the above technical solution, a ventilation ring gap is provided between the guide ring and the conical guide block, and the outer movement trajectory of the air outlet plate does not contact the outer side of the protective shell.

[0008] According to the above technical solution, the purification chamber is pre-filled with alkaline solution, the bottom of the guide ring and the center line of the conical guide block are both located above the alkaline solution surface inside the purification chamber, and the top of the conical guide block is equipped with a guide component.

[0009] According to the above technical solution, the flow guiding assembly includes a reciprocating screw, a threaded block, a limiting rod, a fixing rod, a C-shaped frame, a second rotating shaft, a torsion spring, a flow guiding plate, flow guiding fins, a cam, and a trigger block. The top of the hollow rotating shaft is fixedly connected to the reciprocating screw, the upper half of which is a reciprocating threaded section. The outer side of the reciprocating threaded section is threadedly connected to a threaded block. The top of the conical flow guiding block is fixedly connected to multiple limiting rods, the outer side of which is slidably connected to the inside of the threaded block. Multiple fixing rods are fixedly connected around the threaded block. The end of the fixing rod away from the center of the purification chamber is fixedly connected to a C-shaped frame. The inside of the C-shaped frame is rotatably connected to a second rotating shaft. A torsion spring is fixedly connected at the connection between the second rotating shaft and the C-shaped frame. The outer side of the second rotating shaft is fixedly connected to a flow guiding plate. Multiple flow guiding fins are fixedly connected to both the upper and lower surfaces of the flow guiding plate. The end of the second rotating shaft away from the center of the purification chamber is fixedly connected to a cam. Multiple trigger blocks are fixedly connected to the inner surface of the purification chamber. The flow guiding component is set up so that when the equipment is started, it works with the reciprocating screw, threaded block, limit rod, fixing rod, C-shaped frame, rotating shaft 2, torsion spring, cam, and trigger block to make the flow guiding plate move up and down reciprocally. When the flow guiding plate moves to the bottom, it rotates counterclockwise by a small angle so that the flow guiding effect is better when the flow guiding plate is close to the ventilation ring gap. This makes the acid mist airflow turbulent as it moves upward, so that the alkaline solution sprayed by the spray pump and the acid mist airflow are mixed more thoroughly.

[0010] According to the above technical solution, the motion trajectory of the cam contacts the top of the trigger block, and the motion trajectory of the guide plate does not contact the outer side of the conical guide block and the guide ring.

[0011] According to the above technical solution, the trigger block is located above the top of the flow guide ring, and the bottom of the purification chamber is equipped with a circulating drainage component.

[0012] According to the above technical solution, the circulating drainage assembly includes a bevel gear three, a bevel gear four, a rotating shaft three, a fixed plate, a drainage pipe, a gear one, a gear two, a fixed drainage plate, a fixed turbine blade, and a drainage groove. The bottom outer side of the hollow rotating shaft is fixedly connected to the bevel gear three. The bottom outer side of the purification chamber is fixedly connected to the fixed plate. The rotating shaft three is rotatably connected through the inside of the fixed plate. The end of the rotating shaft three near the center of the purification chamber is fixedly connected to the bevel gear four. The bevel gear three meshes with the bevel gear four. The other end of the rotating shaft three is fixedly connected to the gear one. The bottom outer side of the purification chamber is fixedly connected to the drainage pipe. The inside of the drainage pipe is fixedly connected to the fixed drainage plate. The right side of the fixed drainage plate is slidably connected to the fixed turbine blade. A sealed bearing is fixedly connected at the connection between the fixed turbine blade and the drainage pipe. The outside of the sealed bearing is fixedly connected to the gear two. The gear two meshes with the gear one. Multiple drainage grooves are formed on the surface of the fixed turbine blade and the fixed drainage plate. A circulating drainage component is installed. When the equipment is started, it works with bevel gear three, bevel gear four, rotating shaft three, drainage pipe, gear one, and gear two to make the fixed turbine blades rotate continuously. This causes the drainage channels between the fixed turbine blades and the fixed drainage plates to continuously interweave, so that the alkali solution is continuously discharged from the drainage pipe into the recovery device. The fixed turbine blades assist in the intermittent discharge of alkali solution, thereby saving energy and making the alkali solution circulation more efficient.

[0013] According to the above technical solution, the drain pipe is equipped with a switching valve, and the outer diameter of the fixed turbine blade is smaller than the outer diameter of the fixed drain plate.

[0014] According to the above technical solution, the movement trajectories of the bevel gear three and bevel gear four do not contact the outer side of the intake pipe.

[0015] The advantages of this application are: (1) When the equipment is started, the hollow rotating shaft, protective shell, fixed ventilation block, bevel gear one, bevel gear two, rotating shaft one, and conical guide block are used to make the airflow enter the fixed ventilation block from the hollow rotating shaft and then spray it out from the air outlet nozzle of the air outlet plate. At the same time, the air outlet plate rotates continuously, so that the acid mist airflow and the alkaline solution are fully mixed. Meanwhile, the alkaline solution sprayed from above flows through the conical guide block and guide ring to form two layers of water curtain, so that the acid mist airflow after the first treatment comes into contact with the water curtain, thereby forming a secondary treatment, making the acid mist treatment more thorough and improving the treatment efficiency of the equipment.

[0016] (2) When the equipment is started, the reciprocating screw, threaded block, limit rod, fixing rod, C-shaped frame, rotating shaft II, torsion spring, cam and trigger block make the guide plate move up and down reciprocally. When the guide plate moves to the bottom, it rotates counterclockwise by a small angle, so that the guide plate has a better guiding effect when it is close to the ventilation ring gap, so that the acid mist airflow forms turbulence when it moves upward, and the alkaline liquid and acid mist airflow sprayed by the spray pump are mixed more fully.

[0017] (3) When the equipment is started, the fixed turbine blades rotate continuously in conjunction with bevel gear three, bevel gear four, rotating shaft three, drain pipe, gear one, and gear two, so that the drain groove between the fixed turbine blades and the fixed drain plate is constantly intersecting, thereby causing the alkali solution to be continuously discharged from the drain pipe into the recovery device, and the fixed turbine blades assist in the intermittent discharge of alkali solution, thereby saving energy and making the alkali solution circulation more efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall internal structure of the present invention; Figure 3 This is a schematic diagram of some components of the present invention; Figure 4 This is a schematic diagram of the internal structure of some components of the present invention; Figure 5 This is a schematic diagram of the flow guiding component structure of the present invention; Figure 6 This is the present invention. Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the circulating drainage component structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the circulating drainage component of the present invention.

[0019] Explanation of key figure labels: 1. Support frame; 2. Purification chamber; 3. Spray pump; 4. Liquid inlet; 5. Fixing frame; 6. Spray head; 7. Air inlet pipe; 8. Air outlet; 91. Hollow rotating shaft; 92. Drive gear set; 93. Protective shell; 94. Fixed vent block; 95. Bevel gear one; 96. Bevel gear two; 97. Rotating shaft one; 98. Air outlet plate; 99. Air outlet nozzle; 910. Conical guide block; 911. Guide ring; 10. Flow guide assembly; 101. Reciprocating lead screw; 102. Threaded block; 103. Limiting rod; 104. Fixing rod; 105. C-shaped frame; 106. Rotating shaft two; 107. Torsion spring; 108. Flow guide plate; 109. Flow guide oblique fin; 1010. Cam; 1011. Trigger block; 11. Circulating drainage assembly; 111. Bevel gear three; 112. Bevel gear four; 113. Rotating shaft three; 114. Fixing plate; 115. Drainage pipe; 116. Gear one; 117. Gear two; 118. Fixing drainage plate; 119. Fixing turbine blade; 1110. Drainage trough. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0021] Example 1, as Figures 1-4 As shown, an acid mist purification device for cold-rolled steel strip includes a support frame 1, a purification chamber 2 is installed inside the support frame 1, a spray pump 3 is fixedly connected to the top of the purification chamber 2, the spray pump 3 is set so that the alkaline solution is driven by the spray pump 3 to be atomized and sprayed downward from the spray head 6, the spray pump 3 is equipped with a liquid inlet 4, a fixing frame 5 is fixedly connected to the bottom outside of the liquid inlet 4, a plurality of spray heads 6 are fixedly connected to the bottom of the fixing frame 5, an air inlet pipe 7 is fixedly connected to the bottom of the purification chamber 2, and an air outlet 8 is fixedly connected to the top of the purification chamber 2. A hollow shaft 91 is rotatably connected to the top of the air intake pipe 7. A sealed bearing is fixedly connected to the connection between the hollow shaft 91 and the air intake pipe 7. A drive gear set 92 is fixedly connected to the bottom outer side of the hollow shaft 91. A motor is fixedly connected to the bottom of the drive gear set 92. Multiple support plates are fixedly connected to the inner surface of the purification chamber 2. A protective shell 93 is fixedly connected to the inner side of the support plates. The protective shell 93 is provided to prevent acid mist and alkali liquid from corroding the internal equipment parts. The outer side of the hollow shaft 91 is rotatably connected to the inside of the protective shell 93. A bevel gear 95 is fixedly connected to the outer side of the hollow shaft 91. Multiple shafts 97 are rotatably connected to the inside of the protective shell 93. A bevel gear 96 is fixedly connected to the outer side of each shaft 97. The bevel gear 96 meshes with the bevel gear 95. A fixed vent block 94 is fixedly connected to the top inner side of the protective shell 93. The fixed vent block 94 is provided to allow the hollow shaft 91 to rotate. Shaft 91 is internally connected to rotating shaft 97. The bottom of fixed vent block 94 is rotatably connected to the top of rotating shaft 97. A vent plate 98 is fixedly connected to the bottom of rotating shaft 97. The vent plate 98 allows airflow to enter the interior of fixed vent block 94 from hollow rotating shaft 91 and then be sprayed out from the vent nozzle 99 of vent plate 98. At the same time, vent plate 98 rotates continuously, thereby fully mixing the acid mist airflow with the alkaline solution. Multiple vent nozzles 99 are fixedly connected to the bottom surface of vent plate 98. A conical guide block 910 is fixedly connected to the top of protective shell 93. The conical guide block 910 allows the alkaline solution sprayed from above to flow through the conical guide block 910 and guide ring 911 to form two layers of water curtain. This allows the acid mist airflow after primary treatment to contact the water curtain, thereby forming secondary treatment, making the acid mist treatment more thorough and improving the treatment efficiency of the equipment. A guide ring 911 is fixedly connected to the inner wall surface of purification chamber 2.

[0022] The hollow rotating shaft 91, the fixed vent block 94, and the rotating shaft 97 are internally connected. A sealed bearing is fixedly connected to the connection between the rotating shaft 97 and the fixed vent block 94. The sealed bearing improves the airtightness of the acid mist airflow from the inlet pipe 7 to the outlet nozzle 99. A venting annular gap is provided between the guide ring 911 and the conical guide block 910. The venting annular gap ensures that the upward flow space of the acid mist airflow coincides with the spray area of ​​the spray head 6, and the outer movement trajectory of the outlet plate 98 does not contact the outer side of the protective shell 93. The purification chamber 2 is pre-filled with alkaline solution. The bottom of the guide ring 911 and the center line of the conical guide block 910 are both above the alkaline solution surface inside the purification chamber 2. A guide assembly 10 is installed on the top of the conical guide block 910.

[0023] In practical use, when the above-mentioned equipment is started, acid mist is introduced into the air inlet pipe 7, and the spray pump 3 is started simultaneously, causing the alkaline solution to spray downwards from the spray head 6, allowing the acid mist to enter the hollow rotating shaft 91. The motor is started, causing the motor to drive the drive gear set 92, which in turn drives the hollow rotating shaft 91 to rotate. The hollow rotating shaft 91 then drives the first bevel gear 95 to rotate, which in turn drives the second bevel gear 96 to rotate. The second bevel gear 96 then drives the first rotating shaft 97 to rotate, which in turn drives the air outlet plate 98 to rotate. The rotation is interrupted, allowing the acid mist to enter the fixed ventilation block 94 from the hollow rotating shaft 91, and then from the fixed ventilation block 94 into the rotating shaft 97 and the air outlet plate 98. The acid mist is then sprayed out from the air outlet nozzle 99 and mixed with the alkaline solution. After the acid mist and the bottom alkaline solution react once, the acid mist moves upward from the ventilation ring gap, while the alkaline solution sprayed from above flows through the conical guide block 910 and the guide ring 911 to form two layers of water curtain. This allows the acid mist airflow after the first treatment to come into contact with the water curtain, thus forming a secondary treatment, making the acid mist treatment more thorough and improving the treatment efficiency of the equipment.

[0024] Example 2, as Figures 2-6As shown, based on Embodiment 1, the flow guiding assembly 10 includes a reciprocating lead screw 101, a threaded block 102, a limiting rod 103, a fixing rod 104, a C-shaped frame 105, a second rotating shaft 106, a torsion spring 107, a flow guiding plate 108, a flow guiding inclined fin 109, a cam 1010, and a trigger block 1011. The top of the hollow rotating shaft 91 is fixedly connected to the reciprocating lead screw 101. The upper half of the reciprocating lead screw 101 is a reciprocating threaded section. The outer side of the reciprocating threaded section is threadedly connected to the threaded block 102. The top of the tapered flow guiding block 910 is fixedly connected to multiple limiting rods 103. The outer side of the limiting rod 103 is slidably connected to the inside of the threaded block 102. Multiple fixing rods 104 are fixedly connected around the threaded block 102. The end of the fixing rod 104 away from the center of the purification chamber 2 is fixedly connected to the C-shaped frame 105. The inside of the C-shaped frame 105 is rotatably connected to the second rotating shaft 106. The second rotating shaft 106 and the C-shaped frame 105 are connected to each other. A torsion spring 107 is fixedly connected at the connection of frame 105. The torsion spring 107 is provided so that the second rotating shaft 106 can rotate and reset. A guide plate 108 is fixedly connected to the outer side of the second rotating shaft 106. The guide plate 108 is provided so that it moves up and down back and forth, thereby forming turbulence when the acid mist airflow moves upward, so that the alkaline liquid sprayed by the spray pump 3 and the acid mist airflow are mixed more thoroughly. Multiple guide fins 109 are fixedly connected to the upper and lower surfaces of the guide plate 108. The guide fins 109 are provided so that the acid mist airflow is guided by the guide fins 109 to form turbulence. A cam 1010 is fixedly connected to the end of the second rotating shaft 106 away from the center of the purification chamber 2. Multiple trigger blocks 1011 are fixedly connected to the inner surface of the purification chamber 2. The trigger blocks 1011 are provided so that when the guide plate 108 moves to the bottom, it rotates counterclockwise by a small angle, so that the guide plate 108 has a better guiding effect when it is close to the ventilation ring gap.

[0025] The movement trajectory of cam 1010 contacts the top of trigger block 1011, while the movement trajectory of guide plate 108 does not contact the outer side of conical guide block 910 and guide ring 911. Trigger block 1011 is located above the top of guide ring 911, and circulation drainage assembly 11 is installed at the bottom of purification chamber 2.

[0026] In practical use, when the hollow shaft 91 rotates, it drives the reciprocating screw 101 to rotate, which in turn drives the threaded block 102 to move up and down along the limit rod 103. The threaded block 102 then drives the fixed rod 104, C-frame 105, and guide plate 108 to move up and down, creating turbulence as the acid mist airflow moves upward. This results in a more thorough mixing of the alkaline solution and acid mist airflow sprayed by the spray pump 3. When the guide plate 108 reaches its lowest point, the outer side of the cam 1010 contacts the top of the trigger block 1011, causing the cam 1010 to rotate counterclockwise. This causes the cam 1010 to drive the second shaft 106 to rotate, which in turn drives the guide plate 108 to rotate counterclockwise by a small angle. This increases the contact area between the guide plate 108 and the acid mist airflow as it approaches the ventilation annular gap, thus improving the guiding effect.

[0027] Example 3, as Figures 2-8 As shown, based on Embodiment 1, the circulating drainage assembly 11 includes a bevel gear 3 111, a bevel gear 4 112, a rotating shaft 3 113, a fixed plate 114, a drainage pipe 115, a gear 1 116, a gear 2 117, a fixed drainage plate 118, a fixed turbine blade 119, and a drainage trough 1110. A bevel gear 3 111 is fixedly connected to the outer bottom of the hollow rotating shaft 91. A fixed plate 114 is fixedly connected to the bottom outer side of the purification chamber 2. The rotating shaft 3 113 is rotatably connected through the interior of the fixed plate 114. A bevel gear 4 112 is fixedly connected to one end of the rotating shaft 3 113 near the center of the purification chamber 2. The bevel gear 3 111 meshes with the bevel gear 4 112. A gear 1 116 is fixedly connected to the other end of the rotating shaft 3 113. A drainage pipe 115 is fixedly connected to the outer bottom of the purification chamber 2. A fixed drainage plate 118 is fixedly connected inside the drainage pipe 115. The fixed drainage plate 118 is provided to facilitate drainage... The flow rate of the alkali solution to be recovered in the liquid pipe 115 is more stable. A fixed turbine blade 119 is slidably connected to the right side of the fixed drain plate 118. The fixed turbine blade 119 is set so that it rotates continuously, and the drain groove 1110 between the fixed turbine blade 119 and the fixed drain plate 118 is constantly interlaced, so that the alkali solution is continuously discharged from the drain pipe 115 into the recovery device. The fixed turbine blade 119 assists in the intermittent discharge of alkali solution, thereby saving energy and making the alkali solution circulation more efficient. A sealed bearing is fixedly connected at the connection between the fixed turbine blade 119 and the drain pipe 115. A gear 2 117 is fixedly connected to the outside of the sealed bearing. The gear 2 117 meshes with the gear 1 116. Multiple drain grooves 1110 are opened on the surface of the fixed turbine blade 119 and the fixed drain plate 118. The drain grooves 1110 are set so that the drain grooves 1110 rotate and interlac, thereby achieving intermittent control of the drain flow rate.

[0028] The drain pipe 115 is equipped with a switching valve, and the outer diameter of the fixed turbine blade 119 is smaller than the outer diameter of the fixed drain plate 118. The movement trajectories of bevel gear three 111 and bevel gear four 112 do not contact the outer side of the intake pipe 7.

[0029] In practical use, when the above-mentioned equipment is started, the hollow rotating shaft 91 drives the bevel gear 111 to rotate, the bevel gear 111 drives the bevel gear 112 to rotate, the bevel gear 112 drives the rotating shaft 113 to rotate, the rotating shaft 113 drives the gear 116 to rotate, the gear 116 drives the gear 2 117 to rotate, and the gear 2 117 drives the fixed turbine blade 119 to rotate. This causes the drainage groove 1110 between the fixed turbine blade 119 and the fixed drainage plate 118 to continuously interweave, thereby continuously discharging the alkali solution from the drainage pipe 115 into the recovery device. The fixed turbine blade 119 assists in the intermittent discharge of the alkali solution, thus saving energy and making the alkali solution circulation more efficient.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An acid mist purification device for cold-rolled steel strip, comprising a support frame, a purification chamber assembled inside the support frame, a spray pump fixedly connected to the top of the purification chamber, a liquid inlet assembled inside the spray pump, a fixing frame fixedly connected to the bottom outer side of the liquid inlet, a plurality of spray heads fixedly connected to the bottom of the fixing frame, an air inlet pipe fixedly connected to the bottom of the purification chamber, and an air outlet fixedly connected to the top of the purification chamber. Its features are, A hollow shaft is rotatably connected to the top of the air intake pipe. A sealed bearing is fixedly connected to the connection between the hollow shaft and the air intake pipe. A drive gear set is fixedly connected to the outer bottom of the hollow shaft. A motor is fixedly connected to the bottom of the drive gear set. Multiple support plates are fixedly connected to the inner surface of the purification chamber. A protective shell is fixedly connected to the inner side of the support plates. The outer side of the hollow shaft is rotatably connected to the inner side of the protective shell. A bevel gear is fixedly connected to the outer side of the hollow shaft. Multiple shafts are rotatably connected to the inner side of the protective shell. A bevel gear is fixedly connected to the outer side of each shaft, and the bevel gear meshes with the bevel gear. A fixed ventilation block is fixedly connected to the top of the inner side of the protective shell. The bottom of the fixed ventilation block is rotatably connected to the top of the shaft. An air outlet plate is fixedly connected to the bottom of the shaft. Multiple air outlet nozzles are fixedly connected to the bottom surface of the air outlet plate. A conical guide block is fixedly connected to the top of the protective shell. A guide ring is fixedly connected to the inner wall surface of the purification chamber.

2. The acid mist purification device for cold-rolled steel strip according to claim 1, characterized in that, The hollow rotating shaft, the fixed vent block, and the first rotating shaft are internally connected, and a sealed bearing is fixedly connected at the connection between the first rotating shaft and the fixed vent block.

3. The acid mist purification device for cold-rolled steel strip according to claim 2, characterized in that, A ventilation ring gap is provided between the flow guide ring and the conical flow guide block, and the outer movement trajectory of the air outlet plate does not contact the outer side of the protective shell.

4. The acid mist purification device for cold-rolled steel strip according to claim 3, characterized in that, The purification chamber is pre-filled with alkaline solution. The bottom of the guide ring and the center line of the conical guide block are both located above the alkaline solution surface inside the purification chamber. The top of the conical guide block is equipped with a guide assembly.

5. The acid mist purification device for cold-rolled steel strip according to claim 4, characterized in that, The flow guiding assembly includes a reciprocating lead screw, a threaded block, a limiting rod, a fixing rod, a C-shaped frame, a second rotating shaft, a torsion spring, a flow guide plate, flow guiding fins, a cam, and a trigger block. The top of the hollow rotating shaft is fixedly connected to the reciprocating lead screw, the upper half of which is a reciprocating threaded section. A threaded block is threadedly connected to the outer side of the reciprocating threaded section. Multiple limiting rods are fixedly connected to the top of the conical flow guiding block, with the outer side of the limiting rods slidingly connected to the inside of the threaded block. Multiple fixing rods are fixedly connected around the threaded block. A C-shaped frame is fixedly connected to the end of the fixing rod furthest from the center of the purification chamber. A second rotating shaft is rotatably connected inside the C-shaped frame. A torsion spring is fixedly connected at the connection between the second rotating shaft and the C-shaped frame. A flow guide plate is fixedly connected to the outer side of the second rotating shaft. Multiple flow guiding fins are fixedly connected to both the upper and lower surfaces of the flow guide plate. A cam is fixedly connected to the end of the second rotating shaft furthest from the center of the purification chamber. Multiple trigger blocks are fixedly connected to the inner surface of the purification chamber.

6. The acid mist purification device for cold-rolled steel strip according to claim 5, characterized in that, The cam's movement trajectory contacts the top of the trigger block, while the guide plate's movement trajectory does not contact the outer side of the tapered guide block and the guide ring.

7. The acid mist purification device for cold-rolled steel strip according to claim 6, characterized in that, The trigger block is located above the top of the flow guide ring, and the bottom of the purification chamber is equipped with a circulating drainage component.

8. The acid mist purification device for cold-rolled steel strip according to claim 7, characterized in that, The circulating drainage assembly includes a bevel gear three, a bevel gear four, a rotating shaft three, a fixed plate, a drainage pipe, a gear one, a gear two, a fixed drainage plate, a fixed turbine blade, and a drainage groove. A bevel gear three is fixedly connected to the outer bottom of the hollow rotating shaft. A fixed plate is fixedly connected to the bottom outer side of the purification chamber. The rotating shaft three is rotatably connected through the interior of the fixed plate. A bevel gear four is fixedly connected to one end of the rotating shaft three near the center of the purification chamber. The bevel gear three meshes with the bevel gear four. Gear one is fixedly connected to the other end of the rotating shaft three. A drainage pipe is fixedly connected to the outer bottom of the purification chamber. A fixed drainage plate is fixedly connected inside the drainage pipe. A fixed turbine blade is slidably connected to the right side of the fixed drainage plate. A sealed bearing is fixedly connected at the connection between the fixed turbine blade and the drainage pipe. Gear two is fixedly connected to the outer side of the sealed bearing. Gear two meshes with gear one. Multiple drainage grooves are formed on the surfaces of the fixed turbine blade and the fixed drainage plate.

9. The acid mist purification device for cold-rolled steel strip according to claim 8, characterized in that, The drain pipe is equipped with a switch valve, and the outer diameter of the fixed turbine blade is smaller than the outer diameter of the fixed drain plate.

10. The acid mist purification device for cold-rolled steel strip according to claim 9, characterized in that, The movement trajectories of bevel gear three and bevel gear four do not contact the outer side of the intake pipe.

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