A rotary kiln type drying equipment for galvanizing waste pretreatment

Abstract

This invention provides a rotary kiln drying equipment for pretreatment of galvanized waste, relating to the field of galvanized waste resource utilization pretreatment technology. The rotary kiln drying equipment for pretreatment of galvanized waste includes: a base plate, a rotary kiln drying equipment body, a discharge cylinder, and a feed cylinder. The rotary kiln drying equipment body is rotatably mounted on top of the base plate, the feed cylinder is fixedly mounted on top of the base plate, and the discharge cylinder is fixedly mounted on top of the base plate, with the feed cylinder and discharge cylinder located at opposite ends of the rotary kiln drying equipment body. Mounting frames are fixedly installed inside both the discharge cylinder and the feed cylinder. A powder collecting mechanism is provided inside the discharge cylinder, the rotary kiln drying equipment body, and the feed cylinder. The powder collecting mechanism includes a removal component and a powder guiding component. The rotary kiln drying equipment for pretreatment of galvanized waste provided by this invention has the advantages of extending the residence time of zinc-containing ash airflow inside the kiln, facilitating rapid collection of zinc ash, and achieving automatic cleaning of zinc ash.

Description

Technical Field

[0001] This invention relates to the field of pretreatment technology for the resource recovery of galvanized waste, and in particular to a rotary kiln drying equipment for the pretreatment of galvanized waste. Background Technology

[0002] Rotary kiln drying equipment for galvanized waste is a commonly used high-temperature drying and impurity removal device in the pretreatment process of galvanized waste resource recovery. It is mainly used to dry the moisture adhering to the surface of galvanized edge scraps and galvanized slag, while simultaneously removing zinc ash impurities generated by high-temperature pyrolysis to peel off the galvanized layer on the surface of the waste, providing dry and clean raw materials for subsequent zinc recycling and smelting processes.

[0003] In traditional rotary kiln drying equipment for galvanized waste pretreatment, the high-temperature hot air inside the kiln moves in a straight, unidirectional line along the axis of the kiln body during the waste drying operation. The hot air flow path is straight and the flow speed is relatively fast. The high-temperature airflow containing fine zinc ash quickly passes through the inside of the kiln body. The fine zinc ash powder has a very small weight and a slow natural settling speed. Under the entrainment of the straight, high-speed hot air, it cannot escape the airflow. Traditional rotary kilns do not have an airflow disturbance structure, making it difficult to intercept and collect zinc ash.

[0004] Therefore, it is necessary to provide a rotary kiln drying equipment for the pretreatment of galvanized waste to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a rotary kiln drying equipment for pretreatment of galvanized waste that can extend the residence time of zinc ash-containing airflow in the kiln, facilitate rapid collection of zinc ash, and realize automatic cleaning of zinc ash.

[0006] To solve the above-mentioned technical problems, the present invention provides a rotary kiln drying equipment for pretreatment of galvanized waste, comprising: a base plate, a rotary kiln drying equipment body, a discharge cylinder, and a feed cylinder. The rotary kiln drying equipment body is rotatably mounted on the top of the base plate, the feed cylinder is fixedly mounted on the top of the base plate, and the discharge cylinder is fixedly mounted on the top of the base plate, with the feed cylinder and discharge cylinder located at opposite ends of the rotary kiln drying equipment body. Mounting frames are fixedly installed inside both the discharge cylinder and the feed cylinder. A powder collecting mechanism is provided inside the discharge cylinder, the rotary kiln drying equipment body, and the feed cylinder. The powder collecting mechanism includes a removal component and a powder collecting and guiding component. The removal component is used to remove the collected zinc ash powder, and the powder collecting and guiding component is used to change the airflow direction and intercept the zinc ash powder.

[0007] Preferably, the removal assembly includes a first motor, two conveying cylinders, and two augers. Both conveying cylinders are fixedly mounted on the mounting frame and are disposed throughout the rotary kiln drying equipment body. The two augers are rotatably mounted inside the two conveying cylinders. The first motor is fixedly mounted at one end of one of the conveying cylinders, and the output shaft of the first motor is fixedly connected to one end of one of the augers. Pulleys are fixedly mounted on the outer walls of one end of each of the two augers, and the same belt is fitted around the outer sides of the two pulleys. Baffles are fixedly mounted on the tops of both conveying cylinders, and the baffles have multiple openings. A discharge plate is fixedly mounted at the end of each of the two conveying cylinders away from the first motor, and the other end of the discharge plate extends outside the feed cylinder.

[0008] Preferably, the powder collecting and guiding assembly includes multiple guide plates, multiple telescopic scrapers, multiple trapezoidal blocks, and multiple trapezoidal plates. The multiple trapezoidal plates are all fixedly installed on the inner wall of the rotary kiln drying equipment body. Multiple fixing plates are fixedly installed on the outer walls of the two conveying cylinders. The multiple guide plates are respectively fixedly installed on the top of the multiple fixing plates. The multiple telescopic scrapers are respectively slidably installed on one side of the outer wall of the multiple guide plates. Each of the multiple guide plates has a lifting seat at its top. The top of the lifting seat has a groove, and a roller is rotatably installed in the groove. One end of a support rod is fixedly installed at the bottom of the lifting seat, and the other end of the support rod is fixedly connected to the telescopic scraper. The multiple trapezoidal blocks are respectively slidably installed on the multiple guide plates. Inside the flow plate, one end of two guide rods is fixedly installed at the bottom of the lifting seat. The other ends of the two guide rods extend into the flow plate and are fixedly connected to the trapezoidal block. A first spring is sleeved on the outer side of each of the two guide rods. The two ends of the first spring are fixedly connected to the lifting seat and the flow plate, respectively. Multiple limiting frames are fixedly installed on one inner wall of multiple flow plates. A connecting rod is slidably installed through and in each of the multiple limiting frames. A top block is fixedly installed on the end of the connecting rod near the telescopic scraper. A limiting plate is fixedly installed on the end of the connecting rod away from the telescopic scraper. A second spring is sleeved on the outer side of the connecting rod. The two ends of the second spring are fixedly connected to the top block and the limiting frame, respectively.

[0009] Furthermore, each of the multiple guide plates has a connecting support plate slidably installed inside it, and each of the multiple trapezoidal blocks inside the same guide plate is fixedly connected to the corresponding connecting support plate.

[0010] Furthermore, each of the trapezoidal blocks has two first inclined surfaces on one side of its outer wall.

[0011] Furthermore, the outer wall of one side of the guide plate is provided with two sliding grooves, and the telescopic scraper includes a fixed scraper and a movable scraper. The movable scraper is slidably installed in the fixed scraper. Both the movable scraper and the fixed scraper have protrusions fixedly installed on the outer wall of the side near the guide plate. The protrusions are slidably installed in the sliding grooves.

[0012] Furthermore, the top of the base plate is also provided with two sets of collection mechanisms for collecting zinc ash powder, and the two sets of collection mechanisms are located on both sides of the feed cylinder.

[0013] Preferably, each of the collection mechanisms includes a conveying device, a feed hopper, a discharge hopper, and a float. A fixed base is fixedly installed on the top of the base plate. The conveying device is disposed within the fixed base. A collection box is provided on the top of the conveying device. A vibrating motor is fixedly installed on one side of the outer wall of the collection box. A bracket is fixedly installed on the top of the base plate. The feed hopper is installed on the top of the bracket. A discharge pipe is integrally formed at the bottom of the feed hopper. The bottom of the discharge pipe extends into the bracket. The discharge pipe is fixedly connected to the bracket. A blocking plate is slidably installed on one side of the outer wall of the discharge pipe. One end of the blocking plate extends into the discharge pipe. A first cylinder is fixedly installed on the top of the bracket. The telescopic end of the first cylinder is fixedly connected to the blocking plate. The discharge... The hopper is slidably installed inside the bracket. One end of a connecting ear is fixedly installed on one outer wall of the hopper, and the other end of the connecting ear extends to the outside of the bracket. A second cylinder is fixedly installed on one outer wall of the bracket, and the telescopic end of the second cylinder is fixedly connected to the connecting ear. Two connecting arms are slidably installed on the inner walls of both sides of the hopper. A float plate is fixedly installed at the bottom of the two connecting arms. An end plate is fixedly installed at the top of each of the two connecting arms. A first conductive block and a steel block are fixedly installed at the top of the end plate. L-shaped plates are fixedly installed on both outer walls of the hopper. A suction cup electromagnet is fixedly installed at the top of the L-shaped plate, and the suction end of the suction cup electromagnet extends to the bottom of the L-shaped plate. A second conductive block is also fixedly installed at the bottom of the L-shaped plate.

[0014] Preferably, the outer walls of both connecting arms are fitted with a third spring located above the discharge hopper, and the two ends of the third spring are fixedly connected to the end plate and the discharge hopper respectively, and the two connecting arms are symmetrically distributed at 180 degrees.

[0015] Preferably, the bottom of the float plate is provided with a second inclined surface.

[0016] Compared with related technologies, the rotary kiln drying equipment for pretreatment of galvanized waste provided by the present invention has the following beneficial effects: This invention provides a rotary kiln drying equipment for pretreatment of galvanized waste. By combining the removal component and the powder collection and guiding component, it can change the straight flow path of hot gas inside the kiln, and extend the residence time of zinc ash-containing hot gas inside the rotary kiln. This allows fine zinc ash particles to fully decelerate, settle, and adhere to the outer wall of the guide plate, thus solving the problem of excessively fast hot gas flow rate in traditional rotary kilns, resulting in zinc ash overflowing directly with the exhaust gas before it can be collected. Furthermore, during the rotation of the rotary kiln, the lifting seat can be periodically driven to press down. The step-by-step push and pull of the limit plate and connecting rod is achieved by the inclined surface of the trapezoidal block. The rebound of the second spring drives the top block to impact the inner wall of the guide plate at high frequency, which can autonomously peel off the loose zinc ash on the outer wall of the guide plate through vibration, without the need for manual shutdown and cleaning. Combined with the structure of the split telescopic scraper and the sliding groove protrusion, when the lifting seat presses down, the movable scraper is driven to extend relative to the fixed scraper to scrape off the stubborn zinc ash that is firmly adhered to the surface of the guide plate and cannot be removed by vibration. This achieves dual ash removal by vibration and scraper cleaning, eliminating dead corners of powder residue. Through the coordinated collection mechanism and internal components, the system can accurately receive and collect scattered zinc ash, preventing dust dispersion during zinc ash transfer. Combined with the vibrating motor and the collection box, it can break up the loose zinc ash inside the collection box in real time, eliminating voids in the powder, improving the space utilization of the collection box, and reducing the frequency of collection box replacement. Furthermore, the floating plate, symmetrical connecting arms, and double conductive block interlocking sensing structure, relying on the zinc ash level rising and pushing the floating plate upward trigger circuit, can realize automatic material level detection without the need for manual real-time material level inspection. In conjunction with the suction cup electromagnet, steel block, and third spring, after the circuit is turned on, the electromagnet quickly locks the upward displacement of the connecting arm, and at the same time, the first cylinder is interlocked to block the feed hopper discharge pipe, stopping the waste material feeding and terminating zinc ash production from the source, realizing automatic shutdown interlocking control when the material is full. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first embodiment of the rotary kiln drying equipment for pretreatment of galvanized waste provided by the present invention. Figure 2 for Figure 1 The diagram shows another perspective of the structure. Figure 3 for Figure 2 The diagram shows a cross-sectional view of the rotary kiln drying equipment body, the discharge cylinder, and the feed cylinder. Figure 4 for Figure 2 The diagram shows a cross-sectional view of the rotary kiln drying equipment. Figure 5 for Figure 3 The diagram shows the guide vane and the transport cylinder separated. Figure 6 for Figure 5 The diagram shows the baffle and the transport cylinder separated. Figure 7 for Figure 5 The diagram shows a partial structural representation. Figure 8 for Figure 7 The diagram shows a cross-sectional view of the guide vane, top block, and connecting rod. Figure 9 for Figure 7 The diagram shows a cross-sectional view of the deflector. Figure 10 for Figure 7 The diagram shows the assembly of the lifting seat, telescopic scraper, and trapezoidal block. Figure 11 This is a schematic diagram of a second embodiment of the rotary kiln drying equipment for pretreatment of galvanized waste provided by the present invention. Figure 12 for Figure 11 The diagram shows the support and conveying device separated. Figure 13 for Figure 12 The diagram shows a cross-sectional view of the support structure. Figure 14 for Figure 13 The diagram shown illustrates the separation of the feed hopper and discharge hopper. Figure 15 for Figure 14 The diagram shows a cross-sectional view of the feed hopper. Figure 16 for Figure 14 The diagram shows a cross-sectional view of the discharge hopper and float. Figure 17 for Figure 16 The diagram shows a partial structural schematic.

[0018] Labels in the diagram: 1. Base plate; 2. Rotary kiln drying equipment body; 3. Discharge cylinder; 4. Feed cylinder; 5. Discharge plate; 6. First motor; 7. Conveying cylinder; 8. Trapezoidal plate; 9. Baffle; 10. Screwdriver; 11. Guide plate; 12. Belt; 13. Roller; 14. Lifting seat; 15. Guide rod; 16. First spring; 17. Telescopic scraper; 18. Second spring; 19. Limiting plate; 20. Top block ; 21. Connecting rod; 22. Trapezoidal block; 23. Fixed seat; 24. Bracket; 25. Conveying device; 26. Vibrating motor; 27. Concentrating box; 28. First cylinder; 29. ​​Feed hopper; 30. Discharge hopper; 31. Suction cup electromagnet; 32. Second cylinder; 33. Blocking plate; 34. Steel block; 35. Connecting arm; 36. Float plate; 37. First conductive block; 38. Third spring; 39. Second conductive block. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] First embodiment: Please refer to the following: Figures 1-10 In the first embodiment of the present invention, the rotary kiln drying equipment for pretreatment of galvanized waste includes: a base plate 1, a rotary kiln drying equipment body 2, a discharge cylinder 3, and a feed cylinder 4. The rotary kiln drying equipment body 2 is rotatably installed on the top of the base plate 1, the feed cylinder 4 is fixedly installed on the top of the base plate 1, and the discharge cylinder 3 is fixedly installed on the top of the base plate 1. The feed cylinder 4 and the discharge cylinder 3 are respectively located at both ends of the rotary kiln drying equipment body 2. An installation frame is fixedly installed inside both the discharge cylinder 3 and the feed cylinder 4. A powder collection mechanism is provided inside the discharge cylinder 3, the rotary kiln drying equipment body 2, and the feed cylinder 4. The powder collection mechanism includes a removal component and a powder collection and guiding component. The removal component is used to remove the collected zinc ash powder, and the powder collection and guiding component is used to change the airflow direction and intercept the zinc ash powder.

[0021] The removal assembly includes a first motor 6, two conveying cylinders 7, and two augers 10. Both conveying cylinders 7 are fixedly mounted on the mounting frame and are both installed inside the rotary kiln drying equipment body 2. The two augers 10 are rotatably mounted inside the two conveying cylinders 7 respectively. The first motor 6 is fixedly mounted at one end of one of the conveying cylinders 7, and the output shaft of the first motor 6 is fixedly connected to one end of one of the augers 10. Pulleys are fixedly mounted on the outer walls of one end of each of the two augers 10, and the same belt 12 is fitted on the outer side of the two pulleys. Baffles 9 are fixedly mounted on the top of each of the two conveying cylinders 7, and the baffles 9 have multiple openings. A discharge plate 5 is fixedly mounted at the end of each of the two conveying cylinders 7 away from the first motor 6. The other end of the discharge plate 5 extends outside the feed cylinder 4. When the first motor 6 is started, the first motor 6 drives one of the augers 10 to rotate, and the two augers 10 rotate synchronously and at the same speed by means of two sets of pulleys and belt 12, which facilitates the continuous outward conveying of fine zinc ash particles by the augers 10.

[0022] The powder collection and guiding assembly includes multiple guide plates 11, multiple telescopic scrapers 17, multiple trapezoidal blocks 22, and multiple trapezoidal plates 8. The trapezoidal plates 8 are all fixedly installed on the inner wall of the rotary kiln drying equipment body 2. Multiple fixed plates are fixedly installed on the outer walls of the two conveying cylinders 7. Multiple guide plates 11 are respectively fixedly installed on the tops of the multiple fixed plates. Multiple chip guide plates are fixedly installed on one side of the outer wall of each guide plate 11. Fine zinc ash particles contact the outer walls of the guide plates 11 and then fall onto the chip guide plates on one side of the guide plate 11 due to gravity. Finally, they slide down the chip guide plates to the opening and fall into the conveying cylinder 7. Multiple telescopic scrapers 17 are slidably installed on one side of the outer wall of each guide plate 11. Each guide plate 11 has a lifting mechanism at its top. The lifting seat 14 has a groove on its top, in which a roller 13 is rotatably mounted. One end of a support rod is fixedly mounted on the bottom of the lifting seat 14, and the other end of the support rod is fixedly connected to a telescopic scraper 17. Multiple trapezoidal blocks 22 are slidably mounted within multiple guide plates 11. Connecting support plates are slidably mounted within each guide plate 11, and multiple trapezoidal blocks 22 within the same guide plate 11 are fixedly connected to their corresponding connecting support plates. Each trapezoidal block 22 has two first inclined surfaces on one outer wall. Two guide rods 15 are fixedly mounted on the bottom of the lifting seat 14, and the other ends of the two guide rods 15 extend into the guide plate 11 and are fixedly connected to the trapezoidal blocks 22. A first spring 16 is sleeved on the outer side of each guide rod 15. The two ends of 6 are fixedly connected to the lifting seat 14 and the guide plate 11, respectively. Multiple limiting frames are fixedly installed on one inner wall of multiple guide plates 11. Connecting rods 21 are slidably installed through and in multiple limiting frames. A top block 20 is fixedly installed at the end of the connecting rod 21 near the telescopic scraper 17, and a limiting plate 19 is fixedly installed at the end of the connecting rod 21 away from the telescopic scraper 17. A second spring 18 is sleeved on the outside of the connecting rod 21. The two ends of the second spring 18 are fixedly connected to the top block 20 and the limiting frame, respectively. When the rotary kiln drying equipment body 2 rotates, multiple sets of trapezoidal plates 8 rotate together with the rotary kiln drying equipment body 2, and cyclically touch the rollers 13. The rollers 13 are pressed down, driving the lifting seat 14 to move downward, and synchronously compressing the first spring 1. 6. During the downward movement of the lifting seat 14, the trapezoidal block 22 is driven to move downward synchronously through the guide rod 15. The first inclined surfaces on both sides of the trapezoidal block 22 contact the limiting plate 19. With the help of the inclined surface thrust, the limiting plate 19, together with the connecting rod 21 and the top block 20, are pulled backward. During this process, the second spring 18 is compressed and stored energy. As the lifting seat 14 and the trapezoidal block 22 continue to move downward, the inclined surface of the trapezoidal block 22 is separated from the limiting plate 19. The second spring 18 rebounds instantly, pushing the top block 20 to quickly reset forward and directly impact the inner wall of the guide plate 11. The impact vibration directly shakes off the loose zinc ash particles attached to the outer wall of the guide plate 11. At the same time as the lifting seat 14 moves downward, the telescopic scraper 17 adheres to the side wall of the guide plate 11 to scrape off the tightly attached zinc ash remaining on the plate surface, making up for the cleaning blind spots of vibration powder removal.

[0023] Two grooves are provided on one outer wall of the guide plate 11. The telescopic scraper 17 includes a fixed scraper and a movable scraper. The movable scraper is slidably installed in the fixed scraper. Both the movable scraper and the fixed scraper have protrusions fixedly installed on the outer wall of the side near the guide plate 11. The protrusions are slidably installed in the grooves. Through the cooperation of the protrusions and the grooves, when the lifting seat 14 is pressed down, it synchronously drives the movable scraper to extend relative to the fixed scraper, scraping off the stubborn zinc ash that is firmly adhered to the surface of the guide plate 11 and cannot be removed by vibration. This achieves dual ash removal by vibration cleaning and scraper ash removal, eliminating dead corners of powder residue.

[0024] In this embodiment: Start the rotary kiln drying equipment body 2 and make it rotate at low speed. Pour the galvanized waste into the feed cylinder 4 and start the first motor 6. The first motor 6 drives one of the augers 10 to rotate. The two augers 10 are synchronized and run at the same speed by relying on two sets of pulleys and belts 12. Then, hot air is introduced from the discharge cylinder 3. When the high temperature zinc ash hot air generated by the drying of galvanized waste in the kiln passes through multiple sets of guide plates 11, the guide plates 11 change the straight airflow path and prolong the flow residence time of the hot air in the rotary kiln drying equipment body 2. This allows the fine zinc ash particles in the hot air to decelerate fully. The fine zinc ash particles come into contact with the outer wall of multiple guide plates 11 and then fall onto the chip guide plate on one side of the outer wall of the guide plate 11 by gravity. Finally, they slide down through the chip guide plate to the opening and fall into the conveyor cylinder 7. When the rotary kiln drying equipment body 2 rotates, multiple sets of trapezoidal plates 8 rotate together with the rotary kiln drying equipment body 2, cyclically contacting the rollers 13. The rollers 13 are pressed down, driving the lifting seat 14 to move downward, synchronously compressing the first spring 16. During the downward movement of the lifting seat 14, the trapezoidal blocks 22 are driven to move downward synchronously through the guide rod 15. The first inclined surfaces on both sides of the trapezoidal blocks 22 contact the limiting plate 19. With the push force of the inclined surfaces, the limiting plate 19, together with the connecting rod 21 and the top block 20, are pulled backward. During this process, the second spring 18 is compressed and stores energy. As the lifting seat 14 and the trapezoidal blocks 22 continue to move downward, the inclined surfaces of the trapezoidal blocks 22 disengage from the limiting plate 19, and the second spring 18 rebounds instantly, pushing the top block 20 to quickly return to its original position and directly impact the inner wall of the guide plate 11. The loose zinc ash particles attached to the outer wall of the guide plate 11 are directly shaken off by the impact vibration. At the same time as the lifting seat 14 moves down, its bottom support rod simultaneously drives the telescopic scraper 17 to slide down the slide groove on the side wall of the guide plate 11. The movable scraper inside the telescopic scraper 17 extends out along the convex slide groove relative to the fixed scraper, and scrapes off the tightly attached zinc ash remaining on the side wall of the guide plate 11, making up for the blind spot of the vibration powder removal. When the trapezoidal block 22 rotates and disengages from the roller 13 with the rotary kiln drying equipment body 2, the first spring 16, which loses the downward squeezing force, rebounds, driving the lifting seat 14, trapezoidal block 22, and telescopic scraper 17 to reset. Finally, the zinc ash particles that have been shaken off and scraped off fall into the conveying cylinder 7 through the opening of the baffle 9 and are continuously conveyed out by the auger 10 to complete the drying operation.

[0025] Second embodiment: The second embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Please refer to the following: Figures 11-17 In the rotary kiln drying equipment for pretreatment of galvanized waste provided in this embodiment, the top of the bottom plate 1 is also provided with two sets of collection mechanisms for collecting zinc ash powder, and the two sets of collection mechanisms are located on both sides of the feed cylinder 4.

[0027] Each set of collection mechanisms includes a conveying device 25, a feed hopper 29, a discharge hopper 30, and a float 36. A fixed base 23 is fixedly installed on the top of the base plate 1. The conveying device 25 is set inside the fixed base 23. The conveying device 25 adopts the conventional design of conveying devices in the prior art, such as a motor, conveyor belt, and drum. A collection box 27 is provided on the top of the conveying device 25. A vibrating motor 26 is fixedly installed on one side of the outer wall of the collection box 27. A bracket 24 is fixedly installed on the top of the base plate 1. The feed hopper 29 is installed on the top of the bracket 24. A discharge pipe is integrally formed at the bottom of the feed hopper 29. The bottom of the discharge pipe extends into the bracket 24 and is fixedly connected to the bracket 24. One side of the outer wall of the discharge pipe... A blocking plate 33 is slidably installed, with one end of the blocking plate 33 extending into the discharge pipe. A first cylinder 28 is fixedly installed on the top of the bracket 24, and the telescopic end of the first cylinder 28 is fixedly connected to the blocking plate 33. A discharge hopper 30 is slidably installed inside the bracket 24. One end of a connecting ear is fixedly installed on one side of the outer wall of the discharge hopper 30, and the other end of the connecting ear extends outside the bracket 24. A second cylinder 32 is fixedly installed on one side of the outer wall of the bracket 24, and the telescopic end of the second cylinder 32 is fixedly connected to the connecting ear. Two connecting arms 35 are slidably installed on the inner walls of both sides of the discharge hopper 30. The two connecting arms 35 are symmetrically distributed at 180 degrees of rotation. A float plate 36 is fixedly installed at the bottom of the two connecting arms 35. The bottom of the float plate 36 is provided with a second... On the inclined surface, end plates are fixedly installed at the top of both connecting arms 35. A third spring 38, located above the discharge hopper 30, is fitted onto the outer wall of each connecting arm 35. The two ends of the third spring 38 are fixedly connected to the end plate and the discharge hopper 30, respectively. A first conductive block 37 and a steel block 34 are fixedly installed on the top of the end plate. L-shaped plates are fixedly installed on both outer walls of the discharge hopper 30. A suction cup electromagnet 31 is fixedly installed on the top of the L-shaped plate, with its adsorption end extending to the bottom of the L-shaped plate. A second conductive block 39 is also fixedly installed at the bottom of the L-shaped plate. When zinc ash accumulates to the top level in the collection box 27, and the top surface of the powder contacts the floating plate 36, the continuously rising powder will push the floating plate 36 upwards, driving the two sets of connecting arms... The connecting arm 35 slides upward synchronously, stretching the third spring 38 on the outside of the connecting arm 35. When the connecting arm 35 moves upward, it drives the end plate to rise synchronously, so that the first conductive block 37 on the end plate is attached to the second conductive block 39 at the bottom of the L-shaped plate. The circuit is then connected. After the circuit is connected, the operation is triggered, and the suction cup electromagnet 31 is energized to attract the steel block 34 on the top of the end plate and lock the floating position of the connecting arm 35. At this time, the first cylinder 28 is started, and the telescopic end of the first cylinder 28 extends quickly, pushing the blocking plate 33 to be inserted horizontally into the inside of the feeding pipe, blocking the feeding channel of the feeding hopper 29, suspending the subsequent feeding of galvanized waste, stopping the production of new zinc ash from the source, and then starting the conveying device 25 to move the collection box 27 filled with zinc ash out of the bracket 24.

[0028] In this embodiment: When the zinc ash inside the rotary kiln drying equipment body 2 begins to be discharged into the feed hopper 29, the second cylinder 32 is activated first. The telescopic end of the second cylinder 32 pushes the discharge hopper 30 down along the support 24, so that the discharge hopper 30 covers the top of the collection box 27. At this time, the float plate 36 is located inside the collection box 27. The zinc ash falling from the discharge plate 5 falls directly into the bottom collection box 27 through the discharge hopper 30. As the zinc ash continues to accumulate in the collection box 27, the vibration motor 26 is activated. The vibration motor 26 vibrates at a low frequency to break up the accumulated loose zinc ash and prevent the powder from being suspended or accumulating in local gaps. When the zinc ash in the collection box 27 accumulates to the top material level, after the top surface of the powder contacts the float plate 36, the continuously rising powder will push the float plate 36 upward, causing the two sets of connecting arms 35 to slide upward synchronously, stretching the third spring 38 on the outside of the connecting arm 35. When the connecting arm 35 moves upward, it drives the end plate to rise synchronously, so that the end plate... The first conductive block 37 attaches upwards to the second conductive block 39 at the bottom of the L-shaped plate, and the circuit is immediately turned on. After the circuit is turned on, the operation is triggered, the suction cup electromagnet 31 is energized, the steel block 34 at the top of the end plate is attracted, and the connecting arm 35 is locked in the floating position. At this time, the first cylinder 28 is started, and the telescopic end of the first cylinder 28 extends quickly, pushing the blocking plate 33 to be inserted horizontally into the inside of the feeding pipe, blocking the feeding channel of the feeding hopper 29, suspending the subsequent feeding of galvanized waste, and stopping the production of new zinc ash from the source. Then the conveying device 25 is started, and the collection box 27 filled with zinc ash is moved out of the bracket 24. The collection box 27 is manually transferred, and the collection box 27 without zinc ash is put into the bracket 24. The suction cup electromagnet 31 is de-energized and no longer attracts the steel block 34. The floating plate 36 loses its upward pushing force, the third spring 38 retracts and drives the connecting arm 35 and the floating plate 36 to reset. The two sets of conductive blocks are disconnected from the circuit and the next operation begins.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A rotary kiln drying equipment for pretreatment of galvanized waste, comprising: The equipment comprises a base plate, a rotary kiln drying equipment body, a discharge cylinder, and a feed cylinder. The rotary kiln drying equipment body is rotatably mounted on top of the base plate, the feed cylinder is fixedly mounted on top of the base plate, and the discharge cylinder is fixedly mounted on top of the base plate, with the feed cylinder and discharge cylinder located at opposite ends of the rotary kiln drying equipment body. The equipment is characterized by having mounting frames fixedly installed inside both the discharge cylinder and the feed cylinder. A powder collecting mechanism is provided inside the discharge cylinder, the rotary kiln drying equipment body, and the feed cylinder. The powder collecting mechanism includes a removal component and a powder collecting and guiding component. The removal component is used to remove the collected zinc ash powder, and the powder collecting and guiding component is used to change the airflow direction and intercept the zinc ash powder.

2. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 1, characterized in that, The removal assembly includes a first motor, two conveying cylinders, and two augers. Both conveying cylinders are fixedly mounted on the mounting frame and are disposed throughout the rotary kiln drying equipment body. The two augers are rotatably mounted inside the two conveying cylinders. The first motor is fixedly mounted at one end of one of the conveying cylinders, and the output shaft of the first motor is fixedly connected to one end of one of the augers. Pulleys are fixedly mounted on the outer walls of one end of each of the two augers, and the same belt is fitted on the outer side of the two pulleys. Baffles are fixedly mounted on the top of each of the two conveying cylinders, and the baffles have multiple openings. A discharge plate is fixedly mounted at the end of each of the two conveying cylinders away from the first motor, and the other end of the discharge plate extends outside the feed cylinder.

3. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 2, characterized in that, The powder collection and guiding assembly includes multiple guide plates, multiple telescopic scrapers, multiple trapezoidal blocks, and multiple trapezoidal plates. The trapezoidal plates are fixedly installed on the inner wall of the rotary kiln drying equipment body. Multiple fixing plates are fixedly installed on the outer walls of the two conveying cylinders. The guide plates are respectively fixedly installed on the top of the fixing plates. The telescopic scrapers are slidably installed on one side of the outer wall of the guide plates. Each guide plate has a lifting seat at its top, with a groove at its top. A roller is rotatably installed in the groove. One end of a support rod is fixedly installed at the bottom of the lifting seat, and the other end of the support rod is fixedly connected to the telescopic scraper. The trapezoidal blocks are slidably installed on the guide plates. Inside, the bottom of the lifting seat is fixedly installed with one end of two guide rods, the other end of the two guide rods extends into the guide plate and is fixedly connected to the trapezoidal block. A first spring is sleeved on the outer side of each of the two guide rods. The two ends of the first spring are fixedly connected to the lifting seat and the guide plate, respectively. Multiple limiting frames are fixedly installed on one inner wall of multiple guide plates. A connecting rod is slidably installed through and in each of the multiple limiting frames. A top block is fixedly installed on the end of the connecting rod near the telescopic scraper, and a limiting plate is fixedly installed on the end of the connecting rod away from the telescopic scraper. A second spring is sleeved on the outer side of the connecting rod, and the two ends of the second spring are fixedly connected to the top block and the limiting frame, respectively.

4. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 3, characterized in that, Each of the multiple guide plates has a connecting support plate slidably installed inside it, and each of the multiple trapezoidal blocks in the same guide plate is fixedly connected to the corresponding connecting support plate.

5. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 3, characterized in that, Each of the trapezoidal blocks has two first inclined surfaces on one side of its outer wall.

6. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 3, characterized in that, The guide plate has two grooves on one outer wall. The telescopic scraper includes a fixed scraper and a movable scraper. The movable scraper is slidably installed in the fixed scraper. Both the movable scraper and the fixed scraper have protrusions fixedly installed on the outer wall near the guide plate. The protrusions are slidably installed in the grooves.

7. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 3, characterized in that, The top of the base plate is also provided with two sets of collection mechanisms for collecting zinc ash powder, and the two sets of collection mechanisms are located on both sides of the feed cylinder.

8. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 7, characterized in that, Each of the aforementioned collection mechanisms includes a conveying device, a feed hopper, a discharge hopper, and a float. A fixed base is fixedly installed on the top of the base plate. The conveying device is disposed within the fixed base. A collection box is provided on the top of the conveying device. A vibrating motor is fixedly installed on one outer wall of the collection box. A bracket is fixedly installed on the top of the base plate. The feed hopper is installed on the top of the bracket. A discharge pipe is integrally formed at the bottom of the feed hopper. The bottom of the discharge pipe extends into the bracket and is fixedly connected to the bracket. A blocking plate is slidably installed on one outer wall of the discharge pipe, with one end of the blocking plate extending into the discharge pipe. A first cylinder is fixedly installed on the top of the bracket. The telescopic end of the first cylinder is fixedly connected to the blocking plate. The discharge hopper slides... The hopper is movably installed inside the bracket. One end of a connecting ear is fixedly installed on one outer wall of the discharge hopper, and the other end of the connecting ear extends to the outside of the bracket. A second cylinder is fixedly installed on one outer wall of the bracket, and the telescopic end of the second cylinder is fixedly connected to the connecting ear. Two connecting arms are slidably installed on the inner walls of both sides of the discharge hopper. A float plate is fixedly installed at the bottom end of the two connecting arms. An end plate is fixedly installed at the top end of each of the two connecting arms. A first conductive block and a steel block are fixedly installed at the top of the end plate. L-shaped plates are fixedly installed on both outer walls of the discharge hopper. A suction cup electromagnet is fixedly installed at the top of the L-shaped plate, and the suction end of the suction cup electromagnet extends to the bottom of the L-shaped plate. A second conductive block is also fixedly installed at the bottom of the L-shaped plate.

9. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 8, characterized in that, The outer walls of both connecting arms are fitted with a third spring located above the discharge hopper. The two ends of the third spring are fixedly connected to the end plate and the discharge hopper, respectively, and the two connecting arms are symmetrically distributed at 180 degrees.

10. The rotary kiln drying equipment for pretreatment of galvanized waste according to claim 8, characterized in that, The bottom of the float plate is provided with a second inclined surface.

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