Hard alloy washing material recovery device for spray drying tower

Abstract

The hard alloy washing material recovery device for the spray drying tower comprises a base, a separator outer barrel is arranged at the upper end of the base, an air outlet is formed in the upper end of the separator outer barrel, an air outlet pipe is arranged in the separator outer barrel, two electrostatic rings are arranged on the inner side of the air outlet pipe, and the two electrostatic rings are rotationally connected with the air outlet pipe; the two electrostatic rings are located on the two sides of the air outlet pipe respectively, the electrostatic rings generate static electricity in the working state, two guide cutting blocks are arranged in the air outlet pipe and located at the lower ends of the two electrostatic rings respectively, the diameters of the guide cutting blocks are gradually reduced from top to bottom, and the air outlet pipe is provided with conveying channels corresponding to the electrostatic rings one to one. The lower end of the separator outer cylinder is provided with an ash discharge port, a collecting box is arranged at the ash discharge port, the lower end of the conveying channel points to the collecting box, the air outlet pipe is sleeved with a sleeve, a rotating piece driving the electrostatic rings to rotate is arranged in the sleeve, and the upper end of the conveying channel is attached to the lower end of the corresponding electrostatic ring. The recovery device has the effect of improving the recovery efficiency of the recovery device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cemented carbide production equipment technology, in particular to a cemented carbide washing material recovery device for a spray drying tower. BACKGROUND

[0002] In the field of cemented carbide powder production, the spray drying tower converts the raw material into powder particles with a certain particle size distribution and morphology by placing the atomized slurry in a high-temperature environment for rapid drying. These powder particles are the key raw materials for subsequent preparation of cemented carbide products, and their quality directly determines the performance and quality of the final alloy product. However, during the normal operation of the spray drying tower, part of the powder will adhere to the tower wall due to the action of the gas flow, and a small amount of powder will be discharged from the drying tower along with the exhaust gas into the subsequent exhaust gas treatment system. These powder adhering to the tower wall or discharged with the exhaust gas is called washing material. With the continuous development of the cemented carbide industry, the recycling value of these washing materials is increasingly prominent.

[0003] The related technology can refer to the Chinese patent with publication number CN217662058U, which discloses a powder recovery assembly for a spray dryer, including a cyclone separator connected to the spray dryer for separating exhaust gas and its fine powder, and a powder recovery assembly connected to the lower end of the cyclone separator. The powder recovery assembly includes a connecting piece, and the connecting piece is connected with a collection bag that can be replaced without stopping the cyclone separator. The powder recovery assembly proposed by the utility model mainly consists of a collection bag, a connecting plate, a moving plate and other components. The moving plate is connected to the connecting plate through a sliding groove, which is beneficial to the positioning and movement of the moving plate. The moving plate can be moved in the sliding groove without stopping the cyclone separator, and a new collection bag can be replaced. This facilitates the replacement of the collection bag and improves the working efficiency of the cyclone separator.

[0004] For the related technology in the above, when the gas carries the powder through the cyclone separator, the cyclone separator uses the rotational motion of the gas flow to separate the large particle size powder particles from the gas flow by the action of centrifugal force. The large particle size powder particles are thrown to the wall of the cyclone separator when the centrifugal force is greater than the centripetal force, and then slide down the wall to achieve effective separation from the gas flow. Although the cyclone separator can separate the gas and the powder to some extent, the small particle size powder has strong suspension ability and is not easy to settle, so it is difficult to achieve effective capture and separation when passing through the cyclone separator. Therefore, the fine powder is lost with the gas flow during the separation process and cannot be effectively recovered. SUMMARY

[0005] In order to improve the recovery efficiency of the recovery device, the present application provides a cemented carbide washing material recovery device for a spray drying tower.

[0006] This application provides a hard alloy detergent recovery device for spray drying towers, which adopts the following technical solution: A hard alloy detergent recovery device for spray drying towers includes a base, with a spray drying tower fixed to the upper end of the base. A separator outer cylinder is located on one side of the spray drying tower, and a connecting pipe connects the separator outer cylinder to the spray drying tower. An air outlet is located at the upper end of the separator outer cylinder, and an air outlet pipe is fixed inside the separator outer cylinder at the air outlet. The airflow enters the separator outer cylinder tangentially and flows in a spiral pattern. Two electrostatic rings are located inside the air outlet pipe, rotatably connected to it. The two electrostatic rings are located on opposite sides of the air outlet pipe. The electrostatic rings generate static electricity during operation. The air outlet pipe contains... There are two guide cutting blocks, located at the lower ends of two electrostatic rings respectively. The diameter of the guide cutting blocks gradually decreases from top to bottom. The air outlet pipe is vertically fixedly connected to a conveying channel corresponding to each electrostatic ring. The lower end of the separator outer cylinder is provided with an ash discharge port, and a collection box is provided at the ash discharge port. The lower end of the conveying channel points to the collection box. A sleeve is fitted on the outside of the air outlet pipe, and a rotating component is provided between the sleeve and the air outlet pipe. The rotating component is used to drive the electrostatic ring to rotate. The upper end of the conveying channel is in contact with the lower end of the corresponding electrostatic ring. A cleaning component is provided inside the sleeve, which is used to clean the powder adsorbed on the lower end face of the electrostatic ring.

[0007] By adopting the above technical solution, the exhaust gas enters the outer cylinder of the separator from the spray drying tower through the connecting pipe. After entering, the airflow flows in a spiral shape along the tangential direction, which separates the powder in the exhaust gas from the gas. The separated powder reaches the collection box from the ash discharge port under the action of gravity. The remaining gas flows towards the gas outlet pipe. The guide block guides the gas reaching the gas outlet pipe, causing the gas to move towards the electrostatic ring. The electrostatic ring generates static electricity in the working state, which causes the electrostatic ring to adsorb the fine powder in the gas. After the adsorption is completed, the cleaning component cleans the fine powder adsorbed on the surface of the electrostatic ring, so that the powder reaches the ash discharge port along the conveying channel and is collected in the collection box after ash discharge. This reduces the probability of fine powder being lost with the gas during the separation process and improves the recovery efficiency of the recovery device.

[0008] Optionally, several electrostatic plates are embedded in the lower end face of the electrostatic ring. The lower end face of the electrostatic plates is higher than the lower end face of the electrostatic ring, and the projection of the electrostatic plates in the horizontal direction falls completely into the projection of the conveying channel.

[0009] By adopting the above technical solution, the lower end face of the electrostatic plate is higher than the lower end face of the electrostatic ring. The static electricity generated when the electrostatic plate is working can be used to adsorb the powder. The horizontal projection of the electrostatic plate falls completely into the projection of the conveying channel, which facilitates the subsequent falling of the fine powder adsorbed on the electrostatic plate into the conveying channel, thereby improving the stability of the equipment.

[0010] Optionally, a metal ring is fixed at the upper end of the air outlet pipe, and a metal plate corresponding to the electrostatic plate is provided on the electrostatic ring. The metal ring and the metal plate cooperate to make the electrostatic plate generate static electricity to adsorb the powder. An elastic element is fixed between the metal plate and the electrostatic plate, and an inclined block is fixed in the conveying channel to separate the metal plate.

[0011] By adopting the above technical solution, the metal ring and the metal plate work together to generate electrostatic force on the electrostatic plate. After adsorption is completed, the rotating component starts to drive the electrostatic ring to rotate, which in turn drives the electrostatic plate to rotate. The rotation of the electrostatic plate causes the metal plate to come into contact with the inclined block, causing the metal plate to shift under the action of the elastic component. At this time, the electrostatic plate no longer has electrostatic force, and the powder falls into the conveying channel under the action of gravity, which improves the efficiency of powder cleaning.

[0012] Optionally, the rotating component includes a motor, a rotating rod, and two gears. The motor is fixed to the upper end of the outer cylinder of the separator. The rotating rod is located inside the sleeve and is coaxially fixed with the output shaft of the motor. The two gears correspond one-to-one with the electrostatic rings. The electrostatic rings have rotating teeth on their outer side, which mesh with the corresponding gears. Both gears are fixedly connected to the rotating rod.

[0013] By adopting the above technical solution, the motor starts and drives the rotating rod to rotate, which in turn drives the gear to rotate. The gear then drives the electrostatic ring to rotate under the action of the rotating teeth, thereby improving the stability of the equipment.

[0014] Optionally, the cleaning components include a second motor, a second gear, a rack, and an impact block. The second motor is fixed to the upper end of the outer cylinder of the separator. A connecting rod is fixed to the output shaft of the second motor. The second gear is fixed to the end of the connecting rod away from the second motor. The rack meshes with the second gear. The impact block is fixed to the end of the rack near the air outlet pipe and is in contact with the electrostatic ring.

[0015] By adopting the above technical solution, the second motor starts and drives the second gear to rotate. The rotation of the second gear drives the rack to move laterally. The lateral movement of the rack drives the impact block to move laterally. The lateral movement of the impact block impacts the electrostatic plate, so that the powder adsorbed on the electrostatic plate, which has lost its electrostatic force, falls off better, thereby improving the powder collection effect.

[0016] Optionally, a guide ring is provided between the two electrostatic rings. The guide ring is fixedly connected to the inner wall of the exhaust pipe, and the diameter of the guide ring gradually increases from top to bottom.

[0017] By adopting the above technical solution, when the airflow is guided to the first electrostatic ring by the first guide block, the guide ring guides the outgoing airflow to the second guide block, and the second guide block guides the airflow to the second electrostatic ring for adsorption again. This allows the second guide block to better guide the airflow and make the airflow contact the second electrostatic ring better, thereby improving the adsorption effect on fine powders in the gas.

[0018] Optionally, a rotating ring is provided on the outside of the guide ring, the rotating ring is fixedly connected to the electrostatic ring, an opening is provided on one side of the air outlet pipe, the opening is located directly above the rotating ring, a scraper is provided at the upper end of the rotating ring, and the scraper is located at the opening.

[0019] By adopting the above technical solution, the guide ring guides the gas, causing some of the gas to move outward and be adsorbed onto the rotating ring. The electrostatic ring rotates, driving the rotating ring to rotate. The scraper scrapes off the fine powder on the rotating ring and transports it into the conveying channel at the opening, thereby improving the powder recovery effect.

[0020] Optionally, the base is provided with a separator outer cylinder symmetrical to the separator outer cylinder, and both connecting pipes are equipped with valves, which are used to control the flow of exhaust gas.

[0021] By adopting the above technical solution, when one separator outer cylinder is cleaning the powder on the electrostatic ring, the exhaust gas is prevented from entering the separator outer cylinder for separation by the valve, while the other separator outer cylinder continues to separate the exhaust gas, thus improving the flexibility of equipment use.

[0022] Optionally, fixed rods are fixed at both ends of the outer cylinder of the separator, and a connecting rod is fixed below the fixed rod. A motor is fixed at the upper end of the base, and a drive rod is fixed at the output shaft of the motor. Hinged rods are fixed at both ends of the drive rod, and the hinged rods are hinged to the connecting rod.

[0023] By adopting the above technical solution, the motor starts three times to drive the drive rod to rotate, the drive rod rotates to drive the hinge rod to rotate, the hinge rod rotates to drive the vertical connecting rod to move, and the vertical movement of the connecting rod drives the fixed rod to move vertically, thereby realizing the vibration of the outer cylinder of the separator. This helps to shake off the material attached to the outer cylinder of the separator and improve the material recovery efficiency.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The guide block guides the gas reaching the outlet pipe, causing the gas to move towards the electrostatic ring. The electrostatic ring generates static electricity during operation, which causes the electrostatic ring to adsorb fine powder in the gas, reducing the probability of fine powder being lost with the gas during the separation process and improving the recovery efficiency of the recovery device. 2. The horizontal projection of the electrostatic plate falls completely into the projection of the conveying channel, which facilitates the subsequent falling of fine powder adsorbed on the electrostatic plate into the conveying channel, thus improving the stability of the equipment. 3. When one separator outer cylinder is cleaning the powder on the electrostatic ring, the valve prevents the exhaust gas from entering the separator outer cylinder for separation, while the other separator outer cylinder continues to separate the exhaust gas, improving the flexibility of equipment use. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the overall structure of the hard alloy detergent recovery device for spray drying towers.

[0026] Figure 2 A cross-sectional diagram designed to highlight the tracheal connection structure. Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0027] Figure 4 This is a cross-sectional schematic diagram designed to highlight the electrostatic plate connection structure.

[0028] Figure 5 This is a schematic diagram designed to highlight the fixed rod connection structure.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 11. Spray drying tower; 12. Separator outer cylinder; 121. Air outlet; 122. Ash discharge port; 1221. Collection box; 1222. Motor 3; 1223. Drive rod; 1224. Hinge rod; 1225. Connecting rod; 1226. Fixing rod; 123. Air outlet pipe; 1231. Electrostatic plate; 1232. Guide block; 1233. Rotating ring; 1234. Guide ring; 1235. Metal ring; 1236. 1237. Metal plate; 1238. Scraper; 1239. Elastic component; 124. Conveying channel; 1241. Inclined block; 125. Rotating component; 1251. Motor 1; 1252. Rotating rod; 1253. Gear 1; 1254. Rotating gear; 126. Motor 2; 1261. Connecting rod; 1262. Gear 2; 1263. Rack; 1264. Impact block; 127. Static ring; 128. Sleeve; 13. Connecting pipe; 131. Valve. Detailed Implementation

[0030] The present application will be further described in detail below with reference to all the accompanying drawings.

[0031] This application discloses a hard alloy detergent recovery device for spray drying towers. Example

[0032] Reference Figure 1 A hard alloy washing material recovery device for spray drying tower includes a base 1, a spray drying tower 11 is fixedly mounted on the upper end of the base 1, the base 1 supports the spray drying tower 11, two separator outer cylinders 12 are provided on one side of the spray drying tower 11, the two separator outer cylinders 12 are symmetrically arranged, a connecting pipe 13 is connected between the separator outer cylinder 12 and the spray drying tower 11, and a valve 131 is provided at the connecting pipe 13.

[0033] Reference Figure 1 and Figure 2An air outlet 121 is provided at the upper end of the outer cylinder 12 of the separator, and an air outlet pipe 123 is provided at the air outlet 121. The exhaust gas in the spray drying tower 11 enters the outer cylinder 12 of the separator through the connecting pipe 13. The airflow enters the outer cylinder 12 of the separator in a spiral flow along the tangential direction, so that the powder in the exhaust gas is separated from the gas. An ash discharge port 122 is provided at the lower end of the outer cylinder 12 of the separator, and a collection box 1221 is provided at the upper end of the base 1. The ash discharge port 122 and the collection box 1221 are directly opposite each other. The powder separated from the exhaust gas reaches the collection box 1221 after ash discharge under the action of gravity.

[0034] Reference Figure 2 and Figure 3 Two electrostatic rings 127 are provided inside the vent pipe 123. The two electrostatic rings 127 are rotatably connected to the vent pipe 123. The two electrostatic rings 127 are located on both sides of the vent pipe 123. Several electrostatic plates 1231 are embedded in the lower end face of the electrostatic rings 127. The electrostatic plates 1231 are evenly distributed around the circumference of the electrostatic rings 127. The lower end face of the electrostatic plates 1231 is higher than the lower end face of the electrostatic rings 127. A metal ring 1235 is fixed at the upper end of the vent pipe 123. A metal plate 1236 corresponding to the electrostatic plates 1231 is provided on the upper end face of the electrostatic rings 127. The metal rings 1235 and the metal plates 1236 cooperate to make the electrostatic plates 1231 generate static electricity to adsorb the powder.

[0035] Reference Figure 4 Two guide blocks 1232 are provided inside the gas outlet pipe 123. The two guide blocks 1232 are located at the lower ends of the two electrostatic rings 127 respectively. The diameter of the guide blocks 1232 gradually decreases from top to bottom. The separated gas flows into the gas outlet pipe 123. The guide blocks 1232 guide the gas that reaches the gas outlet pipe 123, causing the gas to move towards the electrostatic rings 127. When the electrostatic plate 1231 is working, it generates electrostatic force, which causes the electrostatic plate 1231 to adsorb the fine powder in the gas, reducing the probability of the fine powder being lost with the gas during the separation process and improving the recovery efficiency of the recovery device. A gas collecting cylinder is fixed at the upper end of the base 1. After the fine powder in the gas is adsorbed by the electrostatic plate 1231, the gas enters the gas collecting cylinder from the gas outlet 121 and is collected.

[0036] Reference Figure 2 and Figure 4The exhaust pipe 123 is vertically fixedly connected to a conveying channel 124 corresponding to the electrostatic ring 127. The horizontal projection of the electrostatic plate 1231 falls completely within the projection of the conveying channel 124. A sleeve 128 is fitted around the outside of the exhaust pipe 123. A rotating component 125 is provided between the sleeve 128 and the exhaust pipe 123. The rotating component 125 includes a motor 1251, a rotating rod 1252, and two gears 1253. The motor 1251 is fixed to the upper end of the separator outer cylinder 12. The rotating rod 1252 is located inside the sleeve 128, and the rotating rod 1252 is connected to the motor 1251. The output shaft of 1251 is fixed coaxially. After the electrostatic plate 1231 adsorbs the fine powder in the gas, the motor 1251 starts and drives the rotating rod 1252 to rotate. Two gears 1253 correspond one-to-one with the electrostatic ring 127. The outer side of the electrostatic ring 127 is provided with rotating teeth 1254, which mesh with the corresponding gears 1253. Both gears 1253 are fixedly connected to the rotating rod 1252. The rotation of the rotating rod 1252 drives the gears 1253 to rotate. The rotation of the gears 1253, under the action of the rotating teeth 1254, drives the electrostatic ring 127 to rotate.

[0037] Reference Figure 3 An elastic element 1238 is fixed between the metal plate 1236 and the electrostatic plate 1231. An inclined block 1241 is fixed in the conveying channel 124. The rotation of the electrostatic plate 1231 causes the metal plate 1236 to contact the inclined block 1241. The inclined block 1241 pushes the metal plate 1236 and the electrostatic plate 1231 to shift. As the metal plate 1236 shifts, the electrostatic plate 1231 no longer has electrostatic force. The powder that was originally adsorbed by the electrostatic force on the electrostatic plate 1231 falls into the conveying channel 124 under the action of gravity, which improves the efficiency of powder cleaning.

[0038] Reference Figure 4 A second motor 126 is fixedly installed at the upper end of the outer cylinder 12 of the separator. A connecting rod 1261 is fixedly installed on the output shaft of the second motor 126. When the second motor 126 starts, it drives the connecting rod 1261 to rotate. A second gear 1262 is fixedly installed at the end of the connecting rod 1261 away from the second motor 126. When the connecting rod 1261 starts, it drives the second gear 1262 to rotate. A rack 1263 is provided on one side of the second gear 1262. The second gear 1262 meshes with the rack 1263. When the second gear 1262 rotates, it drives the rack 1263 to move laterally. An impact block 1264 is fixedly installed on the side of the rack 1263 near the air outlet pipe 123. When the rack 1263 moves laterally, it drives the impact block 1264 to move laterally, so that the impact block 1264 impacts the electrostatic plate 1231, allowing the powder that has lost its electrostatic adsorption to fall more smoothly, thereby better detaching from the electrostatic plate 1231 and improving the collection effect of the powder.

[0039] Reference Figure 1Both connecting pipes 13 are equipped with valves 131. When one separator outer cylinder 12 is cleaning the powder on the electrostatic ring 127, valve 131 controls the flow of exhaust gas to prevent it from entering the outer cylinder 12 for further separation. This allows the outer cylinder 12 to focus on cleaning the powder without being disturbed by newly entering exhaust gas. Meanwhile, the other separator outer cylinder 12 remains unaffected, continuing its efficient operation and normal separation of exhaust gas. This design ensures that the equipment maintains continuous exhaust gas treatment capacity while guaranteeing the quality of powder cleaning. It effectively cleans the powder on the electrostatic ring 127 while ensuring continuous exhaust gas treatment. This design not only improves the equipment's working efficiency but also enhances its adaptability to different working conditions, enabling it to operate more stably and efficiently in complex and changing industrial environments, thus increasing the flexibility of equipment use.

[0040] Reference Figure 4 A guide ring 1234 is provided between the two electrostatic rings 127. The guide ring 1234 is fixedly connected to the inner wall of the outlet pipe 123, and the diameter of the guide ring 1234 gradually increases from top to bottom. When the gas flows in the outlet pipe 123, it is guided to the first electrostatic ring 127 by the first guide block 1232, and the powder in the gas flow is initially adsorbed. At this time, the guide ring 1234 guides the gas flow from the first electrostatic ring 127, so that the gas reaches the second guide block 1232. The second guide block 1232 guides the gas flow to the second electrostatic ring 127 for adsorption again, so that the second guide block 1232 can better guide the gas flow and make the gas flow better contact with the second electrostatic ring 127, thereby improving the adsorption effect of fine powder in the gas and ensuring the high efficiency and stability of the entire adsorption process.

[0041] Reference Figure 5 A motor 1222 is fixedly mounted on the upper end of the base 1. A drive rod 1223 is fixedly mounted on the output shaft of the motor 1222. When the motor 1222 starts, it drives the drive rod 1223 to rotate. Hinged rods 1224 are fixedly mounted on both ends of the drive rod 1223. The rotation of the drive rod 1223 drives the hinged rods 1224 to rotate. Fixed rods 1226 are fixedly mounted on both ends of the separator outer cylinder 12. A connecting rod 1225 is fixedly mounted below the fixed rods 1226. The hinged rods 1224 are hinged to the connecting rods 1225. The rotation of the hinged rods 1224 drives the connecting rods 1225 to move vertically. The vertical movement of the connecting rods 1225 drives the fixed rods 1226 to move vertically, thereby achieving vibration at the ash discharge port 122. This helps to shake off the powder adhering inside the separator outer cylinder 12, reducing the probability of powder accumulation at the ash discharge port 122 and improving material recovery efficiency.

[0042] Reference Figure 4A rotating ring 1233 is provided on the outer side of the guide ring 1234. The rotating ring 1233 is fixedly connected to the electrostatic ring 127. An opening is provided on one side of the gas outlet pipe 123, which is located directly above the rotating ring 1233. A scraper 1237 is provided at the upper end of the rotating ring 1233, and the scraper 1237 is located at the opening. The guide ring 1234 guides the gas, causing some of the gas to move outward and be adsorbed onto the rotating ring 1233. The rotation of the electrostatic ring 127 drives the rotating ring 1233 to rotate. The scraper 1237 scrapes off the fine powder on the rotating ring 1233. Under the action of gravity, these scraped powders are smoothly transported from the opening into the conveying channel 124 along the inclined surface of the scraper 1237. This process not only efficiently completes the recovery of powder, but also reduces the accumulation of powder inside the device and improves the recovery effect of powder.

[0043] The implementation principle of the hard alloy washing material recovery device for spray drying tower in this application embodiment is as follows: Waste gas enters the outer cylinder 12 of the separator from the spray drying tower 11 through the connecting pipe 13. After entering, the gas flows in a spiral shape along the tangential direction, separating the powder in the waste gas from the gas. The remaining gas flows towards the outlet pipe 123. At this time, the metal ring 1235 and the metal plate 1236 cooperate to generate electrostatic force on the electrostatic plate 1231. Under the guidance of the guide block 1232, the remaining gas passes through two electrostatic plates 1231 at a time. The electrostatic plates 1231 adsorb the fine powder in the gas. After adsorption is completed, the gas flows out from the outlet 121. The motor 1251 starts and drives the rotating rod 125. 2. Rotation: Rotating rod 1252 drives two gears 1253 to rotate, which in turn drives the corresponding electrostatic ring 127 to rotate. The rotation of electrostatic ring 127 drives electrostatic plate 1231 to rotate. The rotation of electrostatic plate 1231 causes metal plate 1236 to contact inclined block 1241, causing metal plate 1236 to shift under the action of elastic element 1238. At this time, electrostatic plate 1231 no longer has electrostatic force, and the powder falls into conveying channel 124 under the action of gravity. Under the action of gravity, it reaches collection box 1221 from conveying channel 124, reducing the probability of fine powder being lost with gas during separation and improving the recovery efficiency of the recovery device.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hard alloy washing material recovery device for spray drying tower, comprising a base (1), characterized in that: A spray drying tower (11) is fixedly mounted on the upper end of the base (1). A separator outer cylinder (12) is provided on one side of the spray drying tower (11). A connecting pipe (13) connects the separator outer cylinder (12) and the spray drying tower (11). An air outlet (121) is opened at the upper end of the separator outer cylinder (12). An air outlet pipe (123) is fixedly mounted inside the separator outer cylinder (12). The air outlet pipe (123) is located at the air outlet (121). The airflow enters the separator outer cylinder (12) tangentially and flows in a spiral. Two electrostatic rings (127) are provided inside the air outlet pipe (123). The two electrostatic rings (127) are rotatably connected to the air outlet pipe (123). The two electrostatic rings (127) are located on both sides of the air outlet pipe (123). The electrostatic rings (127) generate static electricity when working. Two guide cutting blocks (1232) are provided inside the air outlet pipe (123). Located at the lower ends of the two electrostatic rings (127), the diameter of the guide block (1232) gradually decreases from top to bottom. The exhaust pipe (123) is vertically fixedly connected to a conveying channel (124) corresponding to the electrostatic ring (127). The lower end of the separator outer cylinder (12) is provided with an ash discharge port (122), and a collection box (1221) is provided at the ash discharge port (122). The lower end of the conveying channel (124) points to the collection box (122). 1) A sleeve (128) is fitted on the outside of the air outlet pipe (123). A rotating part (125) is provided between the sleeve (128) and the air outlet pipe (123). The rotating part (125) is used to drive the electrostatic ring (127) to rotate. The upper end of the conveying channel (124) is in contact with the lower end of the corresponding electrostatic ring (127). A cleaning part is provided inside the sleeve (128). The cleaning part is used to clean the powder adsorbed on the lower end face of the electrostatic ring (127).

2. The hard alloy washing material recovery device for spray drying tower according to claim 1, characterized in that: The lower end face of the electrostatic ring (127) is embedded with several electrostatic plates (1231). The lower end face of the electrostatic plates (1231) is higher than the lower end face of the electrostatic ring (127). The projection of the electrostatic plates (1231) in the horizontal direction falls completely into the projection of the conveying channel (124).

3. The hard alloy washing material recovery device for spray drying tower according to claim 2, characterized in that: A metal ring (1235) is fixedly provided at the upper end of the air outlet pipe (123). A metal plate (1236) corresponding to the electrostatic plate (1231) is provided on the electrostatic ring (127). The metal ring (1235) and the metal plate (1236) cooperate to make the electrostatic plate (1231) generate static electricity to adsorb the powder. An elastic element (1238) is fixed between the metal plate (1236) and the electrostatic plate (1231). An inclined block (1241) is fixedly provided in the conveying channel (124). The inclined block (1241) separates the metal plate (1236).

4. The hard alloy washing material recovery device for spray drying tower according to claim 1, characterized in that: The rotating component (125) includes a motor (1251), a rotating rod (1252), and two gears (1253). The motor (1251) is fixed at the upper end of the outer cylinder (12) of the separator. The rotating rod (1252) is located inside the sleeve (128), and the rotating rod (1252) is coaxially fixed with the output shaft of the motor (1251). The two gears (1253) correspond one-to-one with the electrostatic ring (127). The electrostatic ring (127) has rotating teeth (1254) on its outer side. The rotating teeth (1254) mesh with the corresponding gears (1253), and both gears (1253) are fixedly connected to the rotating rod (1252).

5. The hard alloy washing material recovery device for spray drying tower according to claim 1, characterized in that: The cleaning components include a second motor (126), a second gear (1262), a rack (1263), and an impact block (1264). The second motor (126) is fixed to the upper end of the outer cylinder (12) of the separator. A connecting rod (1261) is fixed to the output shaft of the second motor (126). The second gear (1262) is fixed to the end of the connecting rod (1261) away from the second motor (126). The rack (1263) meshes with the second gear (1262). The impact block (1264) is fixed to the end of the rack (1263) near the air outlet pipe (123), and the impact block (1264) is in contact with the electrostatic ring (127).

6. The hard alloy washing material recovery device for spray drying tower according to claim 1, characterized in that: A guide ring (1234) is provided between the two electrostatic rings (127). The guide ring (1234) is fixedly connected to the inner wall of the air outlet pipe (123), and the diameter of the guide ring (1234) gradually increases from top to bottom.

7. The hard alloy detergent recovery device for spray drying towers according to claim 6, characterized in that: A rotating ring (1233) is provided on the outside of the guide ring (1234). The rotating ring (1233) is fixedly connected to the electrostatic ring (127). An opening is provided on one side of the air outlet pipe (123), which is located directly above the rotating ring (1233). A scraper (1237) is provided at the upper end of the rotating ring (1233), and the scraper (1237) is located at the opening.

8. The hard alloy detergent recovery device for spray drying towers according to claim 1, characterized in that: The base (1) is provided with a separator outer cylinder (12) symmetrical to the separator outer cylinder (12), and both connecting pipes (13) are provided with valves (131), which are used to control the flow of waste gas.

9. The hard alloy washing material recovery device for spray drying tower according to claim 1, characterized in that: The separator outer cylinder (12) is fixed with fixed rods (1226) at both ends, and a connecting rod (1225) is fixed below the fixed rods (1226). The upper end of the base (1) is fixed with a motor (1222), and the output shaft of the motor (1222) is fixed with a drive rod (1223). The two ends of the drive rod (1223) are fixed with hinge rods (1224), and the hinge rods (1224) are hinged to the connecting rods (1225).

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