Silicon carbide micro-powder drying waste heat recovery device and process

Abstract

The silicon carbide micro powder drying waste heat recovery device comprises a heating furnace, a cavity is formed in the bottom of the inner wall of the heating furnace, heating modules are fixedly installed in the middles of the front face and the back face of the heating furnace in a penetrating mode, and a tank is fixedly installed on the left side of the top face of the heating furnace in a penetrating mode; a guide pipe is fixed to the top face of the tank body, the end, away from the tank body, of the guide pipe penetrates through the left side of the heating furnace and is fixedly connected with the left side of the heating furnace, the guide pipe is located in a cavity of the heating furnace, and a screening assembly is arranged on the left side of the top face of the heating furnace and comprises an electric telescopic rod which is fixedly installed on the left side of the top face of the heating furnace. According to the silicon carbide micro powder heat recovery device, wet and caked silicon carbide micro powder is sieved in a left-right reciprocating mode through the alloy wire mesh, and therefore the problem that the heat recovery effect is poor due to the fact that the silicon carbide micro powder is clustered and accumulated together is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery, and in particular to a device and process for recovering waste heat from drying silicon carbide micropowder. Background Art

[0002] The silicon carbide micropowder drying waste heat recovery device is a device used to dry silicon carbide micropowder. It reheats the air with residual temperature in the drying chamber by continuously recycling it, which significantly reduces the energy consumption required to heat the air and effectively improves the energy utilization efficiency.

[0003] The patent number CN215337416U discloses a high-efficiency silicon carbide micropowder drying waste heat recovery device, which belongs to the field of silicon carbide production, processing and manufacturing technology. By designing a stirring device, a feeding device I, a feeding device II and a cooler, the stirring device adopts mechanical driving to stir from time to time to improve the drying efficiency of silicon carbide micropowder, and the silicon carbide powder agglomerated in the drying box is broken into particles. The feeding device I makes it easier for the silicon carbide micropowder in the drying box to be fed into the cooling box, and the feeding device II makes it easier for the silicon carbide micropowder in the cooling box to be discharged and enter the next process. The cooler ensures that the water in the water pipe to be transported to the outer wall of the cooling box is in a completely cooled state, thereby improving the cooling effect. Compared with the prior art, the equipment stirs more evenly, improves the overall quality of the product, makes feeding easier, has a good cooling effect, and is convenient to discharge. The problems of poor quality of silicon carbide micropowder, difficult feeding, inconvenient discharging and poor cooling effect are solved, and the equipment is mainly used in silicon carbide production.

[0004] However, the current high-efficiency silicon carbide micropowder drying waste heat recovery device has the following problems: when the high-efficiency silicon carbide micropowder drying waste heat recovery device is in use, since the wet silicon carbide micropowder is poured into the heating furnace, the wet and agglomerated silicon carbide micropowder will accumulate together, resulting in poor heat recovery effect of the silicon carbide micropowder. Therefore, we proposed a silicon carbide micropowder drying waste heat recovery device and process. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device and process for recovering waste heat from drying silicon carbide micropowder, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a silicon carbide micropowder drying waste heat recovery device, comprising a heating furnace, a chamber is provided at the bottom of the inner wall of the heating furnace, a heating module is penetrated and fixedly installed in the middle of the front and back sides of the heating furnace, a feed inlet is provided in the middle of the top surface of the heating furnace, a discharge port is provided at the bottom of the right side of the heating furnace, a tank body is penetrated and fixedly installed on the left side of the top surface of the heating furnace, a water inlet is provided on the top surface of the tank body, the tank body is located on the left side of the feed inlet of the heating furnace, a conduit is fixed on the top surface of the tank body, one end of the conduit away from the tank body is penetrated and fixedly connected to the left side of the heating furnace, the conduit is located in the chamber of the heating furnace, the heat of the silicon carbide micropowder during drying heats the tank body, the hot air in the tank body enters into the conduit, the conduit transports the hot air to the chamber of the heating furnace, so that the waste heat of the silicon carbide micropowder during drying heats the bottom of the silicon carbide micropowder, and a screening component is provided on the left side of the top surface of the heating furnace; The screening component includes an electric telescopic rod, which is fixedly installed on the left side of the top surface of the heating furnace, and the electric telescopic rod is located on the left side of the tank body. An L-shaped plate is fixed on the left side of the telescopic end of the electric telescopic rod. A three-rod frame is penetrated and slidably installed in the middle of the left and right sides of the heating furnace. The left side of one of the three-rod frames is fixedly connected to the outer wall of the L-shaped plate, and a circular frame is embedded in the side where two three-rod frames are close to each other. An alloy wire mesh is fixed in the middle of the inner wall of the circular frame. The alloy wire mesh reciprocates left and right to screen the wet and agglomerated silicon carbide micropowder. The heating module transfers heat to the alloy wire mesh, and the alloy wire mesh quickly heats and dries the wet and agglomerated silicon carbide micropowder so that the wet and agglomerated silicon carbide micropowder will not agglomerate together. A limiting component is arranged on the top right side of the L-shaped plate; The limiting assembly includes a sliding rod, which is fixed to the top right side of the L-shaped plate, and the outer wall of the sliding rod passes through and is slidably installed on the top left side of the heating furnace. A sliding plate is fixed to the end of the sliding rod away from the L-shaped plate, and a spring is fixed to the left side of the sliding plate. The end of the spring away from the sliding plate is fixedly connected to the right side of the inner wall of the heating furnace, and a round tube is fixed to the right side of the inner wall of the heating furnace. The inner wall of the round tube is slidably connected to the outer wall of the sliding plate. Under the elastic force of the spring, the sliding rod is pressed against the L-shaped plate, so that when the L-shaped plate reciprocates left and right to pull the three-rod frame, the amplitude of the three-rod frame is reduced; A fanning device is arranged in the middle of the right side of the sliding plate, and an anti-sticking device is arranged on the right side of the fanning device.

[0007] According to the above technical scheme, a cover plate is hinged on the right side of the feed port of the heating furnace, a furnace cover is fixedly installed on the outer wall of the discharge port of the heating furnace, the two heating modules include two shells, a plurality of resistance heating rods and two heat conducting plates, the two shells pass through and are fixed in the middle of the front and back sides of the heating furnace, a plurality of resistance heating rods are fixedly installed on the left and right sides of the inner walls of the two shells, the two heat conducting plates are respectively fixed on the inner walls of the two shells, the two heat conducting plates are respectively located on the side where the plurality of resistance heating rods are close to each other, the circular frame is located between the two heating modules, and the spring is sleeved above the outer wall of the slide rod.

[0008] According to the above technical scheme, the fan device includes a long rod, an inner groove ring, a circular pad and a cross fan. The long rod is rotatably installed in the middle of the right side of the sliding plate. A spiral groove is opened on the right side of the outer wall of the long rod. The inner groove ring passes through and is fixedly installed on the right top of the heating furnace. The inner wall of the inner groove ring and the outer wall of the spiral groove of the long rod are meshed with each other. A circular pad is fixed on the right end of the long rod. The cross fan is fixed in the middle of the outer wall of the long rod. The cross fan is provided with four strip-shaped fan blades. Under the action of the spiral groove of the long rod, the long rod rotates back and forth in the inner groove ring, and the long rod drives the cross fan to rotate back and forth. The reciprocating cross fan breaks up the moist silicon carbide micropowder, so that the moist silicon carbide micropowder can be evenly distributed on the alloy wire mesh.

[0009] According to the above technical solution, the fan material device also includes four thin rods, a connecting plate and an arc-shaped elastic strip. The four thin rods are fixed on the right side of the four strip-shaped fan blades of the cross fan. The connecting plate is fixed on the top of the inside of the heating furnace. The connecting plate is located on the right side of the feed port of the heating furnace. The arc-shaped elastic strip is fixed in the middle of the bottom surface of the connecting plate. The thin rod hits the arc-shaped elastic strip, and the thin rod vibrates. The thin rod transmits the vibration to the cross fan, so that a large amount of silicon carbide powder will not be attached to the surface of the cross fan.

[0010] According to the above technical solution, the cross fan is located below the feed port of the heating furnace, and the outer wall of the arc-shaped elastic strip is on the movement trajectory of the four thin rods.

[0011] According to the above technical solution, the anti-sticking device includes a ring block, a baffle, a sliding tube and a cylinder, the ring block is fixed on the right side of the four thin rods, the baffle is fixed in the middle of the inner wall of the ring block, the inner wall of the baffle is in contact with the outer wall of the long rod, the sliding tube is fixed on the right side of the ring block, the cylinder is fixed on the left side of the inner wall of the heating furnace, a circular hole is opened in the middle of the right side of the cylinder, the inner wall of the cylinder is slidably connected with the outer wall of the sliding tube, and the sliding tube blocks the silicon carbide micropowder from adhering to the spiral groove of the long rod, so that the spiral groove of the long rod will not have silicon carbide micropowder adhering.

[0012] According to the above technical solution, the anti-sticking device also includes a ring plate, a short rod, a square plate and a spring sheet. The ring plate is fixed on the right side of the inner wall of the sliding tube, the short rod passes through and is slidably installed on the right side of the ring plate, the square plate is fixed on the right end of the short rod, the spring sheet is fixed on the bottom left side of the square plate, and the end of the spring sheet away from the square plate is fixedly connected to the right side of the ring plate. Under the elastic force of the spring sheet, the square plate is pressed against the cylinder to prevent the sliding tube from hitting the cylinder.

[0013] According to the above technical solution, the circular hole of the cylinder contacts the outer wall of the spiral groove of the long rod, and the left side of the inner wall of the cylinder is on the movement track of the square plate.

[0014] A recovery process of a silicon carbide micropowder drying waste heat recovery device comprises the following steps: S1. The staff starts the heating module, which heats the heating furnace, and the heating furnace heats and dries the silicon carbide powder; S2. The heat from the drying of silicon carbide micropowder heats the tank body, and the hot air in the tank body enters the conduit, which transports the hot air to the chamber of the heating furnace, so that the residual heat from the drying of silicon carbide micropowder heats the bottom of the silicon carbide micropowder; S3, the alloy wire mesh reciprocates left and right to screen the wet and agglomerated silicon carbide powder, and the heating module transfers heat to the alloy wire mesh, which quickly heats and dries the wet and agglomerated silicon carbide powder, so that the wet and agglomerated silicon carbide powder will not clump together; S4. Under the elastic force of the spring, the slide bar rests on the L-shaped plate, so that the L-shaped plate can reduce the amplitude of the three-bar frame when pulling the three-bar frame back and forth left and right; S5. The cross fan rotates back and forth to break up the wet silicon carbide powder, so that the wet silicon carbide powder can be evenly distributed on the alloy wire mesh; S6. The thin rod will hit the arc-shaped elastic bar, causing the thin rod to vibrate, and the thin rod transmits the vibration to the cross fan, so that a large amount of silicon carbide powder will not adhere to the surface of the cross fan; S7, the sliding tube blocks the silicon carbide powder from adhering to the spiral groove of the long rod, so that the spiral groove of the long rod will not have silicon carbide powder adhering; S8. Under the elastic force of the spring, the square plate presses against the cylinder, so that the sliding tube will not hit the cylinder.

[0015] The present invention provides a device for recovering residual heat from drying silicon carbide micropowder. It has the following beneficial effects: (1) The present invention uses an electric telescopic rod, an L-shaped plate, a three-rod frame, a circular frame, an alloy wire mesh, a sliding rod, a sliding plate and a spring to cooperate with a round tube. The alloy wire mesh reciprocates to screen the damp and agglomerated silicon carbide micropowder. The heating module transfers heat to the alloy wire mesh. The alloy wire mesh quickly heats and dries the damp and agglomerated silicon carbide micropowder, so that the damp and agglomerated silicon carbide micropowder will not be agglomerated together, thereby preventing the silicon carbide micropowder from agglomerating together and causing poor heat recovery effect. In addition, under the elastic force of the spring, the sliding rod is pressed against the L-shaped plate, so that when the L-shaped plate reciprocates to pull the three-rod frame left and right, the amplitude of the three-rod frame is reduced, thereby preventing the three-rod frame from vibrating violently and causing the equipment to run unsmoothly.

[0016] (2) The present invention arranges a fan device so that the long rod, the inner groove ring, the round pad, the cross fan, the thin rod and the connecting plate cooperate with the arc-shaped elastic strip. Under the action of the spiral groove of the long rod, the long rod rotates back and forth in the inner groove ring, and the long rod drives the cross fan to rotate back and forth. The reciprocating cross fan breaks up the wet silicon carbide micropowder, so that the wet silicon carbide micropowder can be evenly distributed on the alloy wire mesh, thereby preventing the silicon carbide micropowder from being unevenly distributed on the alloy wire mesh, resulting in poor drying effect of the equipment. In addition, the thin rod hits the arc-shaped elastic strip, and the thin rod vibrates. The thin rod transmits the vibration to the cross fan, so that a large amount of silicon carbide micropowder will not adhere to the surface of the cross fan, thereby preventing a large amount of silicon carbide micropowder from adhering to the surface of the cross fan, resulting in poor effect of the cross fan in breaking up the silicon carbide micropowder.

[0017] (3) The present invention sets an anti-sticking device so that the ring block, baffle plate, sliding tube, cylinder, ring plate, short rod and square plate cooperate with the spring sheet. The sliding tube blocks the silicon carbide micropowder from adhering to the spiral groove of the long rod, so that the silicon carbide micropowder will not adhere to the spiral groove of the long rod, and the spiral groove of the long rod will not be easily damaged by the silicon carbide micropowder adhering to the spiral groove of the long rod. In addition, under the elastic force of the spring sheet, the square plate is pressed against the cylinder, so that the sliding tube will not hit the cylinder, and the sliding tube will not hit the cylinder, which will cause the internal parts of the equipment to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 It is a cross-sectional schematic diagram of the present invention as a whole; Figure 3 It is a cross-sectional schematic diagram of the heating furnace of the present invention; Figure 4 For the present invention Figure 3 A local enlarged schematic diagram of the middle A; Figure 5 It is a schematic diagram of the fan material device of the present invention; Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle; Figure 7is a cross-sectional schematic diagram of the anti-sticking device of the present invention; Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0019] In the figure: 1. heating furnace; 2. heating module; 3. tank body; 4. conduit; 21. screening assembly; 211. electric telescopic rod; 212. L-shaped plate; 213. three-rod frame; 214. circular frame; 215. alloy wire mesh; 22. limit assembly; 221. slide rod; 222. slide plate; 223. spring; 224. round tube; 5. fan device; 51. long rod; 52. inner groove ring; 53. round pad; 54. cross fan; 55. thin rod; 56. connecting plate; 57. arc spring strip; 6. anti-sticking device; 61. ring block; 62. baffle plate; 63. slide tube; 64. cylinder; 65. ring plate; 66. short rod; 67. square plate; 68. spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figure 1-Figure 8 , one embodiment of the present invention is: a silicon carbide micropowder drying waste heat recovery device, comprising a heating furnace 1, a chamber is provided at the bottom of the inner wall of the heating furnace 1, a heating module 2 is penetrated and fixedly installed in the middle of the front and back sides of the heating furnace 1, a feed port is provided in the middle of the top surface of the heating furnace 1, a discharge port is provided at the bottom of the right side of the heating furnace 1, a tank body 3 is penetrated and fixedly installed on the left side of the top surface of the heating furnace 1, a water inlet is provided on the top surface of the tank body 3, the tank body 3 is located on the left side of the feed port of the heating furnace 1, a conduit 4 is fixed on the top surface of the tank body 3, one end of the conduit 4 away from the tank body 3 is penetrated and fixedly connected to the left side of the heating furnace 1, the conduit 4 is located in the chamber of the heating furnace 1, a cover plate is hinged on the right side of the feed port of the heating furnace 1, a furnace cover is fixedly installed on the outer wall of the discharge port of the heating furnace 1, and two heating modules are provided. Group 2 includes two shells, a number of resistance heating rods and two heat conducting plates. The two shells penetrate and are fixed in the middle of the front and back sides of the heating furnace 1. The resistance heating rods are fixedly installed on the left and right sides of the inner walls of the two shells. The two heat conducting plates are respectively fixed on the inner walls of the two shells. The two heat conducting plates are respectively located on the side where the resistance heating rods are close to each other. The staff starts the heating module 2, and the heating module 2 heats the heating furnace 1. The heating furnace 1 heats and dries the silicon carbide micropowder. The heat from the drying of the silicon carbide micropowder heats the tank body 3. The liquid in the tank body 3 evaporates hot gas. The hot gas in the tank body 3 enters the conduit 4. The conduit 4 transports the hot gas to the chamber of the heating furnace 1, so that the residual heat from the drying of the silicon carbide micropowder heats the bottom of the silicon carbide micropowder. A screening component 21 is arranged on the left side of the top surface of the heating furnace 1. The screening component 21 includes an electric telescopic rod 211, which is fixedly installed on the left side of the top surface of the heating furnace 1. The electric telescopic rod 211 is located on the left side of the tank body 3. An L-shaped plate 212 is fixed to the left side of the telescopic end of the electric telescopic rod 211. A three-rod frame 213 is penetrated and slidably installed in the middle of the left and right sides of the heating furnace 1. The left side of one of the three-rod frames 213 is fixedly connected to the outer wall of the L-shaped plate 212. A circular frame 214 is embedded in the side where the two three-rod frames 213 are close to each other. The middle of the inner wall of the circular frame 214 is fixed with The alloy wire mesh 215 and the circular frame 214 are located between the two heating modules 2. The alloy wire mesh 215 reciprocates to screen the wet and agglomerated silicon carbide micropowder. The fine powder in the silicon carbide micropowder will fall from the mesh slits of the alloy wire mesh 215. At the same time, the heating module 2 transfers heat to the alloy wire mesh 215, so that the alloy wire mesh 215 quickly heats and dries the wet and agglomerated silicon carbide micropowder, so that the wet and agglomerated silicon carbide micropowder will not be agglomerated together, thereby preventing the silicon carbide micropowder from agglomerating together when the waste heat recovery device is drying the silicon carbide micropowder, resulting in poor heat recovery effect. A limit assembly 22 is provided at the top right side of the L-shaped plate 212. The limit assembly 22 includes a slide bar 221, which is fixed to the top right side of the L-shaped plate 212. The outer wall of the slide bar 221 passes through and is slidably installed on the top left side of the heating furnace 1. A slide plate 222 is fixed to the end of the slide bar 221 away from the L-shaped plate 212. A spring 223 is fixed to the left side of the slide plate 222. The end of the spring 223 away from the slide plate 222 is fixedly connected to the right side of the inner wall of the heating furnace 1. A round tube 224 is fixed to the right side of the inner wall of the furnace 1, and the inner wall of the round tube 224 is slidably connected to the outer wall of the sliding plate 222. The spring 223 is sleeved on the outer wall of the sliding rod 221. Under the elastic force of the spring 223, the sliding rod 221 is pressed against the L-shaped plate 212, so that when the L-shaped plate 212 reciprocates the three-rod frame 213 to the left and right, the amplitude of the three-rod frame 213 is reduced, so as to avoid the three-rod frame 213 from vibrating violently when the waste heat recovery device is drying the silicon carbide micropowder, causing the equipment to run unsmoothly.

[0022] When in use, the heating furnace 1 supports the heating module 2, the staff rotates to open the cover, pours the wet silicon carbide powder into the feed port of the heating furnace 1, closes the cover, and starts the heating module 2. The resistance heating rod in the heating module 2 starts to heat up, and the resistance heating rod transfers heat to the heat conducting plate, and the heat conducting plate transfers heat to the heating furnace 1, so that the heating furnace 1 heats up and dries the silicon carbide powder. At the same time, under the action of air pressure, the heat of the silicon carbide powder during drying will move upward, and the heat of the silicon carbide powder during drying will heat the tank 3. The liquid in the tank 3 evaporates and produces hot gas, which enters the conduit 4. The conduit 4 transports the hot gas to the chamber of the heating furnace 1, so that the residual heat of the silicon carbide micropowder during drying heats the bottom of the silicon carbide micropowder. When the wet silicon carbide micropowder is poured into the heating furnace 1, the wet agglomerated silicon carbide micropowder will accumulate together. When the staff pours the wet silicon carbide micropowder, the wet silicon carbide micropowder will fall onto the alloy wire mesh 215. The staff starts the electric telescopic rod 211 on the heating furnace 1, and the electric telescopic rod 212 is turned on. The telescopic end of the electric telescopic rod 211 starts to move back and forth quickly, the telescopic end of the electric telescopic rod 211 drives the L-shaped plate 212 to move back and forth, the L-shaped plate 212 drives the three-rod frame 213 to move back and forth, the three-rod frame 213 moves back and forth on the heating furnace 1, the three-rod frame 213 drives the circular frame 214 to move back and forth, the circular frame 214 drives another three-rod frame 213 to move back and forth, and at the same time, the circular frame 214 drives the alloy wire mesh 215 to move back and forth, and the alloy wire mesh 215 reciprocates left and right to screen the wet structure. The agglomerated silicon carbide powder and the fine powder in the silicon carbide powder will fall from the mesh gaps of the alloy wire mesh 215. At the same time, the heating module 2 will transfer heat to the alloy wire mesh 215, so that the alloy wire mesh 215 can quickly heat and dry the damp agglomerated silicon carbide powder, so that the damp agglomerated silicon carbide powder will not clump together, thereby preventing the damp agglomerated silicon carbide powder from clumping together when the equipment is in use, thereby avoiding the problem of poor heat recovery effect caused by the silicon carbide powder clumping together when the waste heat recovery device is drying the silicon carbide powder.

[0023] When the telescopic end of the electric telescopic rod 211 drives the L-shaped plate 212 to move back and forth left and right, the L-shaped plate 212 drives the sliding rod 221 to move back and forth left and right, and the sliding rod 221 moves back and forth left and right on the heating furnace 1. The sliding rod 221 drives the sliding plate 222 to move back and forth left and right, and the sliding plate 222 slides back and forth left and right in the round tube 224. The sliding plate 222 drives the spring 223 to move back and forth left and right, and the spring 223 reciprocates and contracts in the round tube 224. Under the elastic force of the spring 223, the sliding rod 221 is pressed against the L-shaped plate 212, so that when the L-shaped plate 212 pulls the three-rod frame 213 back and forth left and right, the amplitude of the three-rod frame 213 is reduced, so as to prevent the three-rod frame 213 from vibrating violently when the equipment is in use, thereby avoiding the problem of the equipment running not being smooth due to the violent vibration of the three-rod frame 213 when the waste heat recovery device is drying the silicon carbide micropowder.

[0024] See also Figure 1-Figure 8 On the basis of the above embodiment, another embodiment of the present invention further includes a fan device 5 and an anti-sticking device 6, wherein the fan device 5 is arranged in the middle of the right side of the sliding plate 222, and the fan device 5 includes a long rod 51, an inner groove ring 52, a round pad 53 and a cross fan 54. The long rod 51 is rotatably installed in the middle of the right side of the sliding plate 222, and a spiral groove is opened on the right side of the outer wall of the long rod 51. The inner groove ring 52 penetrates and is fixedly installed on the top of the right side of the heating furnace 1. The inner wall of the inner groove ring 52 is meshed with the outer wall of the spiral groove of the long rod 51. The right end of the long rod 51 is fixed with a round pad 53, and the cross fan 54 is fixed at In the middle of the outer wall of the long rod 51, the cross fan 54 is provided with four strip-shaped fan blades. The cross fan 54 is located below the feed port of the heating furnace 1. Under the action of the spiral groove of the long rod 51, the long rod 51 rotates back and forth in the inner groove ring 52, and the long rod 51 drives the cross fan 54 to rotate back and forth. The reciprocating cross fan 54 breaks up the wet silicon carbide micropowder, so that the wet silicon carbide micropowder can be evenly distributed on the alloy wire mesh 215, thereby avoiding the uneven distribution of silicon carbide micropowder on the alloy wire mesh 215 when the waste heat recovery device is drying the silicon carbide micropowder, resulting in poor drying effect of the equipment.

[0025] The fan device 5 also includes four thin rods 55, a connecting plate 56 and an arc-shaped elastic strip 57. The four thin rods 55 are fixed on the right side of the four strip-shaped blades of the cross fan 54. The connecting plate 56 is fixed on the top of the inside of the heating furnace 1. The connecting plate 56 is located on the right side of the feed port of the heating furnace 1. The arc-shaped elastic strip 57 is fixed in the middle of the bottom surface of the connecting plate 56. The outer wall of the arc-shaped elastic strip 57 is on the movement trajectory of the four thin rods 55. In the process of the thin rods 55 reciprocating and moving left and right, the thin rods 55 will collide with the arc-shaped elastic strip 57, and the thin rods 55 will vibrate. The thin rods 55 transmit the vibration to the cross fan 54, so that a large amount of silicon carbide micropowder will not be attached to the surface of the cross fan 54, so as to avoid the silicon carbide micropowder being attached to the surface of the cross fan 54 when the waste heat recovery device is drying the silicon carbide micropowder, resulting in poor effect of the cross fan 54 in breaking up the silicon carbide micropowder.

[0026] The right side of the fan device 5 is provided with an anti-sticking device 6, which includes a ring block 61, a baffle 62, a slide pipe 63 and a cylinder 64. The ring block 61 is fixed on the right side of the four thin rods 55, the baffle 62 is fixed in the middle of the inner wall of the ring block 61, the inner wall of the baffle 62 is in contact with the outer wall of the long rod 51, the slide pipe 63 is fixed on the right side of the ring block 61, and the cylinder 64 is fixed on the left side of the inner wall of the heating furnace 1. A circular hole is opened in the middle of the right side of the cylinder 64, and the inner wall of the cylinder 64 is slidably connected with the outer wall of the slide pipe 63. The circular hole of the cylinder 64 contacts the outer wall of the spiral groove of the long rod 51. When the thin rod 55 rotates back and forth and moves left and right, the thin rod 55 hits the arc-shaped elastic strip 57, causing the thin rod 55 to vibrate. The thin rod 55 transmits the vibration to the cross fan 54, so that a large amount of silicon carbide micropowder will not be attached to the surface of the cross fan 54, thereby preventing the silicon carbide micropowder from being attached to the surface of the cross fan 54 when the waste heat recovery device is drying the silicon carbide micropowder, resulting in poor effect of the cross fan 54 in breaking up the silicon carbide micropowder.

[0027] The anti-sticking device 6 also includes an annular plate 65, a short rod 66, a square plate 67 and a spring plate 68. The annular plate 65 is fixed to the right side of the inner wall of the sliding tube 63, the short rod 66 penetrates and is slidably installed on the right side of the annular plate 65, the square plate 67 is fixed to the right end of the short rod 66, the spring plate 68 is fixed to the bottom of the left side of the square plate 67, and the end of the spring plate 68 away from the square plate 67 is fixedly connected to the right side of the annular plate 65. The left side of the inner wall of the cylinder 64 is on the movement trajectory of the square plate 67. Under the elastic force of the spring plate 68, the square plate 67 is against the cylinder 64, so that the sliding tube 63 will not hit the cylinder 64 during the reciprocating movement of the sliding tube 63 to the left and right, so as to avoid the sliding tube 63 hitting the cylinder 64 when the waste heat recovery device is drying the silicon carbide micropowder, causing damage to the internal parts of the equipment.

[0028] A recovery process of a silicon carbide micropowder drying waste heat recovery device comprises the following steps: S1. The staff starts the heating module 2, and the heating module 2 heats the heating furnace 1, and the heating furnace 1 heats and dries the silicon carbide powder; S2, the heat from the drying of silicon carbide micropowder heats the tank body 3, the hot air in the tank body 3 enters the conduit 4, the conduit 4 transports the hot air to the chamber of the heating furnace 1, and the residual heat from the drying of silicon carbide micropowder heats the bottom of the silicon carbide micropowder; S3, the alloy wire mesh 215 reciprocates to screen the wet and agglomerated silicon carbide powder, and the heating module 2 transfers heat to the alloy wire mesh 215, which quickly heats and dries the wet and agglomerated silicon carbide powder, so that the wet and agglomerated silicon carbide powder will not agglomerate together; S4. Under the elastic force of the spring 223, the slide bar 221 presses against the L-shaped plate 212, so that the L-shaped plate 212 can reduce the amplitude of the three-rod frame 213 when pulling the three-rod frame 213 back and forth left and right; S5, the cross fan 54 rotates back and forth to break up the wet silicon carbide powder, so that the wet silicon carbide powder can be evenly distributed on the alloy wire mesh 215; S6, the thin rod 55 will hit the arc-shaped elastic bar 57, and the thin rod 55 will vibrate, and the thin rod 55 will transmit the vibration to the cross fan 54, so that a large amount of silicon carbide powder will not be attached to the surface of the cross fan 54; S7, the sliding pipe 63 blocks the silicon carbide powder from adhering to the spiral groove of the long rod 51, so that the spiral groove of the long rod 51 will not have silicon carbide powder adhering; S8. Under the elastic force of the spring piece 68 , the square plate 67 presses against the cylinder 64 , so that the sliding tube 63 will not hit the cylinder 64 .

[0029] While the slide bar 221 drives the slide plate 222 to move back and forth, the slide plate 222 drives the long rod 51 to move back and forth, and the long rod 51 moves back and forth in the inner groove ring 52. Under the action of the spiral groove of the long rod 51, the long rod 51 rotates back and forth in the inner groove ring 52, and the long rod 51 drives the round pad 53 to rotate back and forth, and the long rod 51 drives the cross fan 54 to rotate back and forth. At the same time, the long rod 51 drives the round pad 53 to move back and forth, and the long rod 51 drives the cross fan 54 The cross fan 54 reciprocates left and right, and when the staff pours the wet silicon carbide micropowder, the forward and reverse reciprocating cross fan 54 breaks up the wet silicon carbide micropowder, so that the wet silicon carbide micropowder can be evenly distributed on the alloy wire mesh 215, thereby preventing the wet silicon carbide micropowder from being unevenly distributed on the alloy wire mesh 215 when the equipment is in use, thereby avoiding the problem of poor drying effect of the equipment caused by uneven distribution of silicon carbide micropowder on the alloy wire mesh 215 when the waste heat recovery device is drying the silicon carbide micropowder.

[0030] While the long rod 51 drives the cross fan 54 to rotate back and forth, the cross fan 54 drives the thin rod 55 to rotate back and forth, and the cross fan 54 drives the thin rod 55 to move back and forth. At the same time, the heating furnace 1 supports the connecting plate 56, and the connecting plate 56 supports the arc-shaped elastic bar 57. In the process of the thin rod 55 rotating back and forth and moving left and right, the thin rod 55 will hit the arc-shaped elastic bar 57, and the thin rod 55 will vibrate. The thin rod 55 transmits the vibration to the cross fan 54, so that a large amount of silicon carbide micropowder will not be attached to the surface of the cross fan 54, preventing a large amount of silicon carbide micropowder from being attached to the surface of the cross fan 54 when the equipment is in use, thereby avoiding the problem that when the waste heat recovery device is drying the silicon carbide micropowder, a large amount of silicon carbide micropowder is attached to the surface of the cross fan 54, resulting in the cross fan 54 not being effective in breaking up the silicon carbide micropowder.

[0031] When the cross fan 54 drives the thin rod 55 to rotate forward and backward, the thin rod 55 drives the ring block 61 to rotate forward and backward, the thin rod 55 drives the ring block 61 to move back and forth, the ring block 61 drives the baffle plate 62 to rotate forward and backward, the ring block 61 drives the baffle plate 62 to move back and forth, the ring block 61 drives the slide tube 63 to rotate forward and backward, the ring block 61 drives the slide tube 63 to move back and forth, and the slide tube 63 rotates and moves back and forth in the cylinder 64. During the process of the slide tube 63 rotating and moving in the cylinder 64, the slide tube 63 blocks the silicon carbide micropowder from adhering to the spiral groove of the long rod 51, so that the spiral groove of the long rod 51 will not have silicon carbide micropowder adhering, and the spiral groove of the long rod 51 is prevented from being attached to silicon carbide micropowder when the equipment is in use, thereby avoiding the problem that the spiral groove of the long rod 51 is easily damaged due to the silicon carbide micropowder adhering to the spiral groove of the long rod 51 when the waste heat recovery device is drying the silicon carbide micropowder.

[0032] When the ring block 61 drives the sliding tube 63 to move back and forth left and right, the sliding tube 63 drives the ring plate 65 to move back and forth left and right, the ring plate 65 drives the short rod 66 to move back and forth left and right, the short rod 66 drives the square plate 67 to move back and forth left and right, and the square plate 67 drives the spring piece 68 to move back and forth left and right. During the reciprocating movement of the square plate 67, the square plate 67 will contact the cylinder 64. Under the action of the extrusion force, the square plate 67 drives the short rod 66 to move left, and the short rod 66 slides left in the ring plate 65. The spring piece 68 on the square plate 67 begins to deform. Under the elastic force of the spring piece 68, the square plate 67 is pressed against the cylinder 64, so that the sliding tube 63 will not hit the cylinder 64 during the reciprocating movement of the sliding tube 63, so as to prevent the sliding tube 63 from hitting the belt cylinder 64 when the equipment is in use, thereby avoiding the problem of the sliding tube 63 hitting the belt cylinder 64 when the waste heat recovery device is drying the silicon carbide micropowder, causing the internal parts of the equipment to be damaged.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for recovering residual heat from drying silicon carbide micropowder, comprising a heating furnace (1), wherein a chamber is provided at the bottom of the inner wall of the heating furnace (1), and a heating module (2) is fixedly installed through the middle of both the front and back sides of the heating furnace (1), characterized in that: A feed inlet is provided in the middle of the top surface of the heating furnace (1), a discharge port is provided at the bottom right side of the heating furnace (1), a tank body (3) is penetrated and fixedly installed on the left side of the top surface of the heating furnace (1), a water inlet is provided on the top surface of the tank body (3), the tank body (3) is located on the left side of the feed inlet of the heating furnace (1), a conduit (4) is fixed on the top surface of the tank body (3), an end of the conduit (4) away from the tank body (3) penetrates and is fixedly connected to the left side of the heating furnace (1), the conduit (4) is located in the chamber of the heating furnace (1), and a screening assembly (21) is provided on the left side of the top surface of the heating furnace (1); The screening component (21) comprises an electric telescopic rod (211), the electric telescopic rod (211) being fixedly mounted on the left side of the top surface of the heating furnace (1), the electric telescopic rod (211) being located on the left side of the tank body (3), an L-shaped plate (212) being fixedly mounted on the left side of the telescopic end of the electric telescopic rod (211), a three-rod frame (213) penetrating and slidably mounted in the middle of the left and right sides of the heating furnace (1), the left side of one of the three-rod frames (213) being fixedly connected to the outer wall of the L-shaped plate (212), a circular frame (214) being embedded in the side where the two three-rod frames (213) are close to each other, an alloy wire mesh (215) being fixedly mounted in the middle of the inner wall of the circular frame (214), and a limit position component (22) being arranged at the top of the right side of the L-shaped plate (212); The limiting assembly (22) comprises a sliding rod (221), wherein the sliding rod (221) is fixed to the top right side of the L-shaped plate (212), the outer wall of the sliding rod (221) penetrates and is slidably mounted on the top left side of the heating furnace (1), a sliding plate (222) is fixed to the end of the sliding rod (221) away from the L-shaped plate (212), a spring (223) is fixed to the left side of the sliding plate (222), the end of the spring (223) away from the sliding plate (222) is fixedly connected to the right side of the inner wall of the heating furnace (1), a round tube (224) is fixed to the right side of the inner wall of the heating furnace (1), and the inner wall of the round tube (224) is slidably connected to the outer wall of the sliding plate (222); A fanning device (5) is provided in the middle of the right side of the sliding plate (222), and an anti-sticking device (6) is provided on the right side of the fanning device (5); A cover plate is hingedly connected to the right side of the feed port of the heating furnace (1); a furnace cover is fixedly installed on the outer wall of the discharge port of the heating furnace (1); the two heating modules (2) include two shells, a plurality of resistance heating rods and two heat conducting plates; the two shells penetrate and are fixed in the middle of the front and back sides of the heating furnace (1); the plurality of resistance heating rods are fixedly installed on the left and right sides of the inner walls of the two shells; the two heat conducting plates are respectively fixed on the inner walls of the two shells; the two heat conducting plates are respectively located on the side where the plurality of resistance heating rods are close to each other; the circular frame (214) is located between the two heating modules (2); and the spring (223) is sleeved on the outer wall of the slide bar (221); The fan device (5) comprises a long rod (51), an inner groove ring (52), a round pad (53) and a cross fan (54). The long rod (51) is rotatably mounted in the middle of the right side of the sliding plate (222). A spiral groove is provided on the right side of the outer wall of the long rod (51). The inner groove ring (52) penetrates and is fixedly mounted on the top of the right side of the heating furnace (1). The inner wall of the inner groove ring (52) and the outer wall of the spiral groove of the long rod (51) are meshed with each other. A round pad (53) is fixed at the right end of the long rod (51). The cross fan (54) is fixed in the middle of the outer wall of the long rod (51). The cross fan (54) is provided with four strip-shaped fan blades.

2. The device for recovering waste heat from drying silicon carbide powder according to claim 1, characterized in that: The fan material device (5) further comprises four thin rods (55), a connecting plate (56) and an arc-shaped elastic strip (57), wherein the four thin rods (55) are fixed to the right sides of the four strip-shaped fan blades of the cross fan (54), the connecting plate (56) is fixed to the top end inside the heating furnace (1), the connecting plate (56) is located on the right side of the feed port of the heating furnace (1), and the arc-shaped elastic strip (57) is fixed to the middle of the bottom surface of the connecting plate (56).

3. A silicon carbide micropowder drying waste heat recovery device according to claim 2, characterized in that: The cross fan (54) is located below the feed port of the heating furnace (1), and the outer wall of the arc-shaped elastic strip (57) is located on the movement trajectory of the four thin rods (55).

4. The device for recovering waste heat from drying silicon carbide powder according to claim 3, characterized in that: The anti-sticking device (6) comprises a ring block (61), a baffle plate (62), a sliding tube (63) and a cylinder (64); the ring block (61) is fixed to the right side of the four thin rods (55); the baffle plate (62) is fixed in the middle of the inner wall of the ring block (61); the inner wall of the baffle plate (62) contacts the outer wall of the long rod (51); the sliding tube (63) is fixed to the right side of the ring block (61); the cylinder (64) is fixed to the left side of the inner wall of the heating furnace (1); a circular hole is opened in the middle of the right side of the cylinder (64); the inner wall of the cylinder (64) is slidably connected to the outer wall of the sliding tube (63).

5. The device for recovering waste heat from drying silicon carbide powder according to claim 4, characterized in that: The anti-sticking device (6) further comprises an annular plate (65), a short rod (66), a square plate (67) and a spring sheet (68), wherein the annular plate (65) is fixed to the right side of the inner wall of the sliding tube (63), the short rod (66) penetrates and is slidably mounted on the right side of the annular plate (65), the square plate (67) is fixed to the right end of the short rod (66), the spring sheet (68) is fixed to the bottom left side of the square plate (67), and one end of the spring sheet (68) away from the square plate (67) is fixedly connected to the right side of the annular plate (65).

6. The device for recovering residual heat from drying silicon carbide powder according to claim 5, characterized in that: The circular hole of the cylinder (64) contacts the outer wall of the spiral groove of the long rod (51), and the left side of the inner wall of the cylinder (64) is located on the movement track of the square plate (67).

7. A recovery process of a silicon carbide micropowder drying waste heat recovery device, using the silicon carbide micropowder drying waste heat recovery device according to claim 6, characterized in that: The following steps are involved: S1, a staff member starts the heating module (2), the heating module (2) heats the heating furnace (1), and the heating furnace (1) heats and dries the silicon carbide micropowder; S2, the heat generated during the drying of the silicon carbide micropowder heats the tank body (3), the hot air in the tank body (3) enters the conduit (4), and the conduit (4) transports the hot air to the chamber of the heating furnace (1), so that the residual heat generated during the drying of the silicon carbide micropowder heats the bottom of the silicon carbide micropowder; S3, the alloy wire mesh (215) reciprocates left and right to screen the wet and agglomerated silicon carbide micropowder, and the heating module (2) transfers heat to the alloy wire mesh (215), and the alloy wire mesh (215) quickly heats and dries the wet and agglomerated silicon carbide micropowder, so that the wet and agglomerated silicon carbide micropowder does not agglomerate together; S4. Under the elastic force of the spring (223), the slide bar (221) is pressed against the L-shaped plate (212), so that the L-shaped plate (212) can reduce the amplitude of the three-bar frame (213) when pulling the three-bar frame (213) back and forth left and right; S5, the cross fan (54) rotates back and forth to break up the wet silicon carbide micropowder, so that the wet silicon carbide micropowder can be evenly distributed on the alloy wire mesh (215); S6, the thin rod (55) will hit the arc-shaped elastic strip (57), the thin rod (55) will vibrate, and the thin rod (55) will transmit the vibration to the cross fan (54), so that a large amount of silicon carbide powder will not be attached to the surface of the cross fan (54); S7, the sliding tube (63) blocks the silicon carbide powder from adhering to the spiral groove of the long rod (51), so that the spiral groove of the long rod (51) will not be adhered to by the silicon carbide powder; S8. Under the elastic force of the spring sheet (68), the square plate (67) abuts against the cylinder (64), so that the slide tube (63) does not collide with the cylinder (64).

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