A drying device for processing iron slag powder

Abstract

The present invention relates to the technical field of iron slag powder processing, and specifically to a drying device for iron slag powder processing, which includes a dryer. The dryer includes a continuously rotating drying drum. Inside the drying drum, a crushing unit, a material leveling unit, and a high-throwing unit are sequentially installed from right to left, so that the drying drum is sequentially divided into a pretreatment area, a main drying area, and a final drying area from right to left. The present invention adopts the method of dividing the inside of the drying drum into a pretreatment area, a main drying area, and a final drying area, and conducts different treatments for different stages of the water content of the iron slag powder. Among them, a crushing unit is arranged in the pretreatment area to perform extrusion and crushing treatment on the iron slag powder with a higher water content to prevent the iron slag powder with a higher water content from caking; a material leveling unit is arranged in the main drying area to prevent the iron slag powder from accumulating and ensure that the lifted iron slag powder can fully contact with the hot air; a high-throwing unit is arranged in the final drying area to increase the lifting height of the iron slag powder and extend the contact time between the iron slag powder and the hot air.

Description

Technical Field

[0001] The present invention relates to the technical field of iron slag powder processing, and specifically, it is a drying device for iron slag powder processing. Background Art

[0002] Iron slag powder is a powdery substance formed by crushing and grinding solid waste generated in the metallurgical industry. Its main components are iron oxide, silicate, calcium oxide, and a small amount of metal oxides. After being recycled, iron slag powder can be used as building material raw materials, soil improvers, or metallurgical raw materials, etc. However, since iron slag powder contains moisture, it is necessary to dry the iron slag powder.

[0003] Currently, a rotary dryer is often used to dry iron slag powder. The rotary dryer drives the lifting plates inside through a continuously rotating rotating cylinder, so that the lifting plates drive the iron slag powder to move and lift the iron slag powder. At the same time, the air inside the rotating cylinder is heated through a heating chamber, so that the lifted iron slag powder contacts the hot air to achieve the drying of the iron slag powder.

[0004] However, the above drying process has the following problems: 1. Iron slag powder caking: In the initial stage of iron slag powder drying, due to the relatively high water content inside the iron slag powder, there is an easy problem of iron slag powder caking, and the moisture inside the caked iron slag powder is difficult to be completely dried, thus affecting the quality of the final product.

[0005] 2. Incomplete drying: The lifting height of the existing lifting plates for iron slag powder is usually a fixed height. At the same time, since iron slag powder is likely to accumulate in large quantities, when the lifting plates lift the iron slag powder, a large amount of lifted iron slag powder may not be able to fully contact the hot air, and thus it is easy to cause some iron slag powder to not be completely dried. Summary of the Invention

[0006] To solve the above technical problems, the present invention adopts the following technical solutions. A drying device for processing iron slag powder includes a dryer, and the dryer includes a continuously rotating drying drum. A plurality of material lifting plates are fixedly installed in the drying drum. A crushing unit, a material leveling unit, and a high-throwing unit are sequentially installed in the drying drum from right to left, so that the drying drum is sequentially divided into a pretreatment area, a main drying area, and a final drying area from right to left. The crushing unit includes a plurality of material deflecting plates fixedly installed in the drying drum. A plurality of uniformly arranged and flared collecting grooves are formed on one side of the material deflecting plate in the same rotation direction as the drying drum. An extrusion member for extruding the iron slag is installed on the material deflecting plate. The material leveling unit includes a plurality of speed-reducing plates fixedly installed in the drying drum. One side of the speed-reducing plate in the same rotation direction as the drying drum is arranged in a wavy structure. The high-throwing unit includes a plurality of high-throwing plates fixedly installed in the drying drum. A plurality of square holes are uniformly arranged left and right on the high-throwing plate. A material blocking member is installed on the high-throwing plate, and the material blocking member is used to block the square holes and increase the material lifting height of the iron slag. The material lifting plates, high-throwing plates, and speed-reducing plates are all arranged in an inclined structure for driving the iron slag powder to move leftward. The high-throwing plates, speed-reducing plates, and material deflecting plates are all circumferentially staggered with their corresponding material lifting plates.

[0007] Preferably, the continuous rotation of the drying drum is realized by a driving member installed on its right side. An inlet member is installed on the right side of the drying drum. The inlet member includes a fixing plate rotatably installed at the right end inside the drying drum. An inlet is formed in the middle of the fixing plate. The right end of the fixing plate is fixedly connected to the frame of the dryer through two U-shaped connecting rods symmetrically arranged front and back.

[0008] Preferably, the extrusion member includes extrusion plates distributed on one side of the material deflecting plate in the same rotation direction as the drying drum, and grid holes staggered with the collecting grooves are formed on the extrusion plates. L-shaped connecting rods are fixedly installed at the four corners on the side of the extrusion plate close to the material deflecting plate. The horizontal sections of the connecting rods are located on the side of the material deflecting plate opposite to the rotation direction of the drying drum, and the horizontal sections of the connecting rods are fixedly connected to elastic reset rods fixedly installed on the material deflecting plate.

[0009] Preferably, a crushing block corresponding to the collecting groove is fixedly installed on one side of the extrusion plate close to the corresponding material deflecting plate, and the crushing block is arranged in a triangular structure.

[0010] Preferably, a plurality of transmission rods are fixedly installed together on the opposite sides of two adjacent extrusion plates on the left and right. A matching rod is fixedly installed in the middle of the right end of the rightmost extrusion plate.

[0011] Preferably, a plurality of circumferentially uniformly arranged elastic pressing rods are distributed at the rear part to the left of the fixing plate, and the right sides of the elastic pressing rods are fixedly connected to the fixing plate through fixing blocks. One side of the elastic pressing rods close to the middle of the drying drum is provided with an inclined surface that cooperates with the matching rod.

[0012] Preferably, a plurality of arc-shaped deceleration plates arranged in a wave shape are fixedly installed on the wavy surface of the slow-down plate, and the arc-shaped deceleration plates are used to reduce the falling speed of the iron slag on the slow-down plate.

[0013] Preferably, on the left end of the slow-down plate and on the side in the same rotation direction as the drying drum, a plurality of material distribution blocks are fixedly installed. The plurality of material distribution blocks are evenly distributed along the width direction of the slow-down plate, and the right end of the material distribution block is arranged in a triangular structure. The material distribution blocks are used to make the iron slag fall evenly and re-crush the iron slag powder.

[0014] Preferably, the high-throw plate is arranged in a hollow structure. The material blocking member includes a dislocation plate installed in the high-throw plate. The dislocation plate is slidably connected to the high-throw plate along the length direction of the high-throw plate through a connecting spring, and dislocation holes are formed at positions corresponding to the square holes on the dislocation plate.

[0015] Preferably, the left end of the dislocation plate slidably penetrates through the high-throw plate and is fixedly installed with a material blocking plate. One end of the material blocking plate away from the dislocation plate is inclined towards the side in the same rotation direction as the dislocation plate and the drying drum.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention adopts the method of dividing the inside of the drying drum into a pretreatment area, a main drying area, and a final drying area, and performs different treatments on different stages of the water content of the iron slag powder. Among them, a crushing unit is arranged in the pretreatment area of the drying drum to perform extrusion and crushing treatment on the iron slag powder with a higher water content, preventing the iron slag powder with a higher water content from caking and ensuring the quality of the final product; a material leveling unit is arranged in the main drying area of the drying drum to prevent the iron slag powder from accumulating, ensuring that the lifted iron slag powder can fully contact with the hot air and ensuring that the iron slag powder is evenly and effectively dried; a high-throw unit is arranged in the final drying area of the drying drum to increase the lifting height of the iron slag powder, extend the contact time between the iron slag powder and the hot air, and further ensure that the iron slag powder is thoroughly dried.

[0017] 2. When the extrusion plate performs extrusion and crushing on the iron slag powder, the present invention squeezes the iron slag powder through the crushing block with a triangular structure, thereby ensuring that the caked iron slag powder is thoroughly crushed and further ensuring the quality of the final product.

[0018] 3. The present invention reduces the falling speed of the iron slag powder from the slow-down plate through the arc-shaped deceleration plate, and at the same time makes the iron slag powder fall evenly from the slow-down plate through the material distribution blocks, further ensuring that the iron slag powder is evenly distributed and undergoes multiple crushing, and making the falling iron slag powder fully contact with the hot air.

[0019] 4. Through the settings of the high-throw plate, the dislocation holes, and the square holes, the present invention makes the iron slag powder be lifted at a higher height, ensuring that the iron slag powder is evenly distributed, and further ensuring that the iron slag powder is thoroughly dried. Brief Description of the Drawings

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0022] Figure 2 It is a sectional view of a part of the structure of the present invention.

[0023] Figure 3 It is a schematic diagram of the partial structure inside the drying drum of the present invention.

[0024] Figure 4 It is a schematic three-dimensional structure diagram of a part of the crushing unit of the present invention.

[0025] Figure 5 It is a schematic diagram of the elastic reset rod, connecting rod and sectioned extrusion plate of the present invention.

[0026] Figure 6 It is a schematic three-dimensional structure diagram of the slow-down plate, arc-shaped deceleration plate and material distribution block of the present invention.

[0027] Figure 7 It is a schematic three-dimensional structure diagram of the dislocation plate, dislocation hole, connecting spring and baffle plate of the present invention.

[0028] Reference numerals: 1, dryer; 11, drying drum; 12, material lifting plate; 13, driving member; 14, feeding member; 141, fixing plate; 142, connecting rod; 143, elastic pressing rod; 2, crushing unit; 21, material deflecting plate; 22, collecting trough; 23, extruding member; 231, extrusion plate; 232, connecting rod; 233, elastic reset rod; 234, crushing block; 235, transmission rod; 236, mating rod; 3, material leveling unit; 31, slow-down plate; 311, arc-shaped deceleration plate; 312, material distribution block; 4, high-throw unit; 41, high-throw plate; 42, baffle member; 421, dislocation plate; 422, connecting spring; 423, dislocation hole; 424, baffle plate. Detailed implementation manners

[0029] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. For those technical or conditions not specified in the embodiments, they shall be carried out according to the techniques or conditions described in the literature in the field or according to the product instructions.

[0030] Refer to Figure 1 and Figure 2, A drying device for processing iron slag powder, including a dryer 1. The dryer 1 includes a continuously rotating drying drum 11. A plurality of material lifting plates 12 are fixedly installed in the drying drum 11, and the material lifting plates 12 are arranged in an inclined structure for driving iron filings to move to the left. A crushing unit 2, a material leveling unit 3, and a high - throwing unit 4 are sequentially installed in the drying drum 11 from right to left, so that the drying drum 11 is divided into a pretreatment area, a main drying area, and a final drying area from right to left in sequence. The continuous rotation of the drying drum 11 is realized by a driving member 13 installed on its right side.

[0031] It should be noted that the dryer 1 further includes a heating chamber sleeved outside the drying drum 11, and the drying drum 11 is rotatably connected to the heating chamber. The heating chamber is used to heat the air in the drying drum 11, so that the hot air dries the iron slag powder. A machine frame is installed on the heating chamber, and it is fixed at the working position through the machine frame. Supporting wheels for supporting the drying drum 11 and assisting its rotation are installed on both the left and right sides of the machine frame. And the dryer 1 further includes a feeding member installed on the left side of the drying drum 11. The feeding member is used to feed the dried iron slag powder. The feeding member is composed of an outer cover and a spiral plate installed inside the outer cover.

[0032] It should be noted that the driving member 13 includes a gear ring fixedly sleeved outside the right side of the drying drum 11. A gear is meshed and installed below the gear ring. The gear is connected to the output shaft of the motor fixedly installed on the machine frame in a spline - fitting manner. By starting the motor to drive the gear to rotate, the gear and the gear ring cooperate to drive the drying drum 11 to rotate continuously.

[0033] The present invention is used for drying iron slag powder. The present invention can perform different treatments for different stages of the water content of iron slag powder, thereby ensuring thorough drying of the iron slag powder and ensuring the quality of the final product. Specifically, first, connect the right side of the drying drum 11 to an external feeding device, and continuously feed the iron slag powder into the drying drum 11 through the feeding device. Then start the driving member 13 to drive the drying drum 11 to rotate continuously, and at the same time start the heating chamber to make the heating chamber dry the iron slag powder in the drying drum 11. And the drying drum 11 drives the material lifting plates 12 to rotate. The material lifting plates 12 can drive the iron slag powder to move to the left, and at the same time the material lifting plates 12 can lift the iron slag powder, so that the iron slag powder can contact the hot air in the drying drum 11 to realize the drying of the iron slag.

[0034] Meanwhile, under the action of the material lifting plate 12, the iron slag powder successively passes through the pretreatment area, the main drying area and the final drying area. When the iron slag powder starts to be dried, the water content of the iron slag powder is relatively high, and the iron slag powder may agglomerate. At this time, the crushing unit 2 installed in the pretreatment area of the drying drum 11 can crush the agglomerated iron slag powder, thereby ensuring the quality of the final product. Then, the material leveling unit 3 installed in the main drying area of the drying drum 11 can make the iron slag powder evenly distributed, thereby preventing the iron slag powder from piling up excessively and ensuring that the iron slag powder can be in full contact with the hot air. Next, the high-throwing unit 4 installed in the final drying area of the drying drum 11 can increase the lifting height of the iron slag powder, thereby increasing the contact time between the iron slag powder and the hot air and ensuring thorough drying of the iron slag powder. Finally, the dried iron slag powder moves to the position corresponding to the blanking part on the left side of the drying drum 11, and the blanking part discharges the dried iron slag powder.

[0035] Refer to Figure 1 and Figure 2 , a feeding part 14 is installed on the right side of the drying drum 11. The feeding part 14 includes a fixing plate 141 rotatably installed at the right end inside the drying drum 11. A feeding port is opened in the middle of the fixing plate 141. The right end of the fixing plate 141 is fixedly connected to the frame of the dryer 1 through two connecting rod frames 142 arranged symmetrically in the front and back and having a U-shaped structure; wherein, the feeding port of the fixing plate 141 is connected to an external feeding device.

[0036] When continuously feeding the iron slag powder through the feeding device, the iron slag powder enters the drying drum 11 through the feeding port of the fixing plate 141. When the drying drum 11 rotates, since the fixing plate 141 is fixedly connected to the frame of the dryer 1 through the connecting rod frame 142, the fixing plate 141 always remains stationary.

[0037] Refer to Figure 2 , Figure 3 and Figure 4 , the crushing unit 2 includes a plurality of material deflecting plates 21 fixedly installed in the drying drum 11. A plurality of uniformly arranged and flared aggregate grooves 22 are formed on one side of the material deflecting plate 21 in the same rotation direction as the drying drum 11. An extrusion member 23 for extruding the iron slag is installed on the material deflecting plate 21; the material deflecting plate 21 and the material lifting plate 12 corresponding to the pretreatment area of the drying drum 11 are arranged circumferentially in a staggered manner.

[0038] The crushing unit 2 is used to crush the agglomerated iron slag powder in the pretreatment area of the drying drum 11; specifically, when the iron slag powder enters the pretreatment area of the drying drum 11, the water content of the iron slag powder is relatively high at this time. When the drying drum 11 rotates, the drying drum 11 drives the material distributing plate 21 to rotate. Since the iron slag powder is basically located at the lower side inside the drying drum 11, when the material distributing plate 21 rotates to the lower limit position, the material distributing plate 21 can drive the iron slag powder to rotate and make the iron slag powder distributed on the material distributing plate 21. The iron slag powder can slide into the aggregate chute 22 with a flared structure. At the same time, the extrusion member 23 can extrude the iron slag powder in the aggregate chute 22. Thus, when there is an agglomeration phenomenon in the iron slag powder, the extrusion member 23 can extrude and crush the agglomerated iron slag powder. And when the material distributing plate 21 rotates from the lower limit position to a certain height, the iron slag powder can fall from the material distributing plate 21 into the drying drum 11.

[0039] Refer to Figure 2 、 Figure 4 and Figure 5 The extrusion member 23 includes an extrusion plate 231 distributed on the same side as the rotation direction of the material distributing plate 21 and the drying drum 11. And grid holes staggered with the aggregate chute 22 are formed on the extrusion plate 231. L-shaped connecting rods 232 are fixedly installed at the four corners on the side of the extrusion plate 231 close to the material distributing plate 21. The horizontal section of the connecting rod 232 is located on the side opposite to the rotation direction of the material distributing plate 21 and the drying drum 11, and the horizontal section of the connecting rod 232 is fixedly connected with an elastic reset rod 233 fixedly installed on the material distributing plate 21.

[0040] Refer to Figure 3 and Figure 4 A plurality of transmission rods 235 are fixedly installed together on the opposite sides of two adjacent extrusion plates 231 from left to right. A matching rod 236 is fixedly installed in the middle of the right end of the rightmost extrusion plate 231.

[0041] Refer to Figure 3 A plurality of elastic pressing rods 143 arranged circumferentially and uniformly are distributed at the rear part to the left of the fixing plate 141. And the right sides of the elastic pressing rods 143 are fixedly connected with the fixing plate 141 through fixing blocks. The sides of the elastic pressing rods 143 close to the middle of the drying drum 11 are all provided with inclined surfaces matched with the matching rod 236; among them, the elastic force of the elastic pressing rods 143 is much greater than that of the elastic reset rod 233.

[0042] Refer to Figure 3 、 Figure 4 and Figure 5, the extruding member 23 is used to extrude and crush the agglomerated iron slag powder; specifically, when the drying drum 11 drives the material distributing plate 21 to rotate, the material distributing plate 21 drives the extrusion plate 231 to rotate through the elastic reset rod 233 and the connecting rod 232. Before the material distributing plate 21 drives the iron slag powder to rotate, the extrusion plate 231 can drive the iron slag powder to rotate first. The iron slag powder falls on the material distributing plate 21 through the grid holes of the extrusion plate 231. Although the grid holes and the material collecting grooves 22 of the material distributing plate 21 are arranged staggeredly, since the material collecting grooves 22 are of a flared structure, the iron slag powder entering from the grid holes can be evenly distributed in a plurality of material collecting grooves 22.

[0043] When the extrusion plate 231 drives the cooperating rod 236 to rotate to the corresponding position of the elastic pressing rod 143, the cooperating rod 236 drives the extrusion plate 231 to move towards the material distributing plate 21 under the action of the inclined surface of the elastic pressing rod 143. At the same time, the extrusion plate 231 stretches the elastic reset rod 233 through the connecting rod 232. Since the elastic force of the elastic pressing rod 143 is much greater than that of the elastic reset rod 233, during this process, the elastic pressing rod 143 does not expand or contract. Because the grid holes and the material collecting grooves 22 of the material distributing plate 21 are arranged staggeredly, the extrusion plate 231 can extrude the iron slag powder in the material collecting grooves 22, realizing the crushing of the agglomerated iron slag powder.

[0044] When the extrusion plate 231 moves towards the material distributing plate 21 to the limit position, the extrusion plate 231 can no longer move. At this time, the inclined surface cooperation between the cooperating rod 236 and the elastic pressing rod 143 will compress the elastic telescopic end of the elastic pressing rod 143. When the cooperating rod 236 and the elastic pressing rod 143 are separated, the extrusion plate 231 returns to the initial position under the restoring force of the elastic reset rod 233. And there are multiple elastic pressing rods 143, so that the extrusion plate 231 can extrude the iron slag powder in the material collecting grooves 22 multiple times, and the extrusion plate 231 is evenly stressed, ensuring the complete extrusion and crushing of the agglomerated iron slag powder. A plurality of transmission rods 235 are connected between two adjacent extrusion plates 231 on the left and right, so that a plurality of extrusion plates 231 arranged left and right can synchronously extrude the iron slag powder in the corresponding material collecting grooves 22.

[0045] Refer to Figure 4 and Figure 5 , a crushing block 234 corresponding to the material collecting groove 22 is fixedly installed on one side of the extrusion plate 231 close to the corresponding material distributing plate 21, and the crushing block 234 is arranged in a triangular structure.

[0046] When the extrusion plate 231 extrudes and crushes the iron slag powder in the material collecting groove 22, the extrusion plate 231 can drive the crushing block 234 to extrude the iron slag powder in the material collecting groove 22, and the crushing block 234 is arranged in a triangular structure with the tip facing the material collecting groove 22, so as to ensure the complete crushing of the agglomerated iron slag powder.

[0047] Refer toFigure 2 and Figure 6 The material leveling unit 3 includes a plurality of retarder plates 31 fixedly installed in the drying drum 11. One side of the retarder plate 31 in the same rotation direction as the drying drum 11 is arranged in a wavy structure; the retarder plate 31 is arranged in an inclined structure for driving the iron slag powder to move leftward, and the retarder plate 31 and the lifting plate 12 corresponding to the main drying area of the drying drum 11 are arranged in a circumferential staggered manner.

[0048] The material leveling unit 3 is used to make the iron slag powder evenly distributed; specifically, when the iron slag powder enters the main drying area of the drying drum 11, at this time the iron slag powder is preliminarily dried, and the water content in the iron slag powder decreases. When the drying drum 11 rotates, the drying drum 11 drives the retarder plate 31 to rotate. When the retarder plate 31 rotates to the lower limit position, the retarder plate 31 can drive the iron slag powder to rotate and make the iron slag powder distributed on the retarder plate 31. When the retarder plate 31 rotates from the lower limit position to a certain height, the iron slag powder drops from the retarder plate 31 into the drying drum 11, and the retarder plate 31 is arranged in an inclined structure, so that the iron slag powder can move leftward while dropping from the retarder plate 31.

[0049] The wavy structure of the retarder plate 31 can increase the moving stroke of the iron slag powder on the retarder plate 31, improve the dispersion effect of the iron gate powder through the retarder plate 31. When the iron slag powder on one retarder plate 31 completely drops, there are still a plurality of retarder plates 31 or lifting plates 12 rotating through the lower limit position, thereby increasing the dispersion degree of the iron slag powder, preventing the iron slag powder from over-accumulating, and ensuring that the iron slag powder can be in full contact with the hot air.

[0050] Refer to Figure 6 , a plurality of arc-shaped retarder plates 311 arranged in a wavy shape are fixedly installed on the wavy surface of the retarder plate 31, and the arc-shaped retarder plates 311 are used to reduce the falling speed of the iron slag on the retarder plate 31.

[0051] Refer to Figure 6 , on the left end of the retarder plate 31 and on the side in the same rotation direction as the drying drum 11, a plurality of material distributing blocks 312 are fixedly installed. The plurality of material distributing blocks 312 are evenly distributed along the width direction of the retarder plate 31, and the right end of the material distributing block 312 is arranged in a triangular structure. The material distributing blocks 312 are used to make the iron slag fall evenly and re-crush the iron slag powder.

[0052] When the iron slag powder falls from the slow-down plate 31, the falling speed of the iron slag powder is reduced to a certain extent under the action of the wavy structure of the arc-shaped slow-down plate 311, and the iron slag powder can be dispersed. At the same time, when the iron slag powder moves leftward along the inclined slow-down plate 31, under the action of the material dividing block 312, the iron slag powder is further evenly dispersed and falls into the drying drum 11, so that the iron slag powder during the falling process can be in full contact with the hot air. Moreover, the right end of the material dividing block 312 is set as a triangular structure, which can also crush the iron slag powder again.

[0053] Refer to Figure 2 and Figure 7 , the high-throwing unit 4 includes a plurality of high-throwing plates 41 fixedly installed in the drying drum 11. A plurality of square holes are evenly arranged left and right on the high-throwing plates 41. A material blocking member 42 is installed on the high-throwing plates 41. The material blocking member 42 is used to block the square holes and increase the height of lifting the iron slag; the high-throwing plates 41 are set as inclined structures for driving the iron slag powder to move leftward, and the high-throwing plates 41 and the lifting plates 12 corresponding to the final drying area of the drying drum 11 are arranged in a circumferential staggered manner.

[0054] The high-throwing unit 4 is used to increase the height of lifting the iron slag powder; specifically, when the iron slag powder enters the final drying area of the drying drum 11, at this time the iron slag powder is basically dried. When the drying drum 11 rotates, the drying drum 11 drives the high-throwing plates 41 to rotate. When the high-throwing plates 41 rotate to the lower limit position, the high-throwing plates 41 can drive the iron slag powder to rotate. When the high-throwing plates 41 rotate from the lower limit position to a certain height, the iron slag powder falls from the high-throwing plates 41 into the drying drum 11; by blocking the iron slag powder with the material blocking member 42, the iron slag powder can uniformly fall from the high-throwing plates 41 only after the high-throwing plates 41 rotate from the lower limit position to a relatively high height, thereby increasing the height of lifting the iron slag powder, increasing the contact time between the hot air and the iron slag powder, and further ensuring that the iron slag powder is thoroughly dried.

[0055] Refer to Figure 2 and Figure 7 , the high-throwing plates 41 are set as hollow structures. The material blocking member 42 includes a misaligned plate 421 installed in the high-throwing plates 41. The misaligned plate 421 is slidably connected to the high-throwing plates 41 along the length direction of the high-throwing plates 41 through connecting springs 422. Misaligned holes 423 are formed at positions corresponding to the square holes on the misaligned plate 421.

[0056] Refer to Figure 2 and Figure 7 , the left end of the misaligned plate 421 slidably penetrates through the high-throwing plates 41 and is fixedly installed with a baffle plate 424. One end of the baffle plate 424 away from the misaligned plate 421 is inclined towards the side in the same rotation direction as the misaligned plate 421 and the drying drum 11.

[0057] The baffle 42 is used to block the iron slag powder on the high-toss plate 41; specifically, initially, the misaligned holes 423 are aligned with the square holes of the high-toss plate 41 one by one. When the high-toss plate 41 rotates to the lower limit position, at this time, a small part of the iron slag powder located on the lower side inside the drying drum 11 can pass through the misaligned holes 423 and the square holes of the high-toss plate 41. The high-toss plate 41 drives the remaining most of the iron slag powder to rotate. Since the iron slag powder moves and is conveyed to the left inside the drying drum 11, the iron slag powder can squeeze the baffle plate 424 to the left, causing the baffle plate 424 to drive the misaligned plate 421 to move to the left and stretch the connecting spring 422. As a result, the misaligned holes 423 of the misaligned plate 421 and the square holes of the high-toss plate 41 are arranged staggeredly. At this time, most of the iron slag powder on the high-toss plate 41 will not fall downward through the misaligned holes 423 and the square holes of the high-toss plate 41.

[0058] When the high-toss plate 41 rotates upward from the lower limit position, at this time, most of the iron slag powder moves to the left along the inclined high-toss plate 41 under the action of gravity. Most of the iron slag powder will not fall to the lower side inside the drying drum 11 under the blocking action of the baffle plate 424. A small part of the iron slag powder will fall from the side of the baffle plate 424 close to the center of the drying drum 11. When the high-toss plate 41 rotates to a certain height from the lower limit position, at this time, the iron slag powder corresponding to the baffle plate 424 accumulates too much, causing the iron slag powder to start falling to the lower side inside the drying drum 11, thereby increasing the lifting height of the iron slag powder. When part of the iron slag powder falls to the lower side inside the drying drum 11, the baffle plate 424 starts to overcome the pressure of the iron slag powder under the resilience of the misaligned plate 421 and the connecting spring 422 and starts to move to the right to the initial position. As a result, the misaligned holes 423 of the misaligned plate 421 and the square holes of the high-toss plate 41 are aligned again, enabling the iron slag powder on the misaligned plate 421 to fall downward through the square holes of the high-toss plate 41. While increasing the lifting height of part of the iron slag powder, it can also ensure the uniform distribution of the iron slag powder and further ensure that the iron slag powder is thoroughly dried.

[0059] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drying device for processing iron slag powder, comprising a dryer, the dryer includes a continuously rotating drying drum, and a plurality of material lifting plates are fixedly installed in the drying drum, characterized in that, A crushing unit, a material leveling unit, and a high-throwing unit are sequentially installed in the drying drum from right to left, so that the drying drum is sequentially divided into a pretreatment area, a main drying area, and a final drying area from right to left; The crushing unit includes a plurality of feeding plates fixedly installed in the drying drum. A plurality of uniformly arranged and flared aggregate grooves are formed on the side of the feeding plate in the same rotation direction as the drying drum. An extrusion member for extruding iron slag is installed on the feeding plate; The material leveling unit includes a plurality of speed-reducing plates fixedly installed in the drying drum. The side of the speed-reducing plate in the same rotation direction as the drying drum is provided with a wavy structure; The high-throwing unit includes a plurality of high-throwing plates fixedly installed in the drying drum. A plurality of square holes are uniformly arranged left and right on the high-throwing plates. A material blocking member is installed on the high-throwing plates. The material blocking member is used to block the square holes and increase the height of the iron slag being lifted; The lifting plates, the high-throwing plates, and the speed-reducing plates are all provided with an inclined structure for driving the iron slag powder to move leftward. The high-throwing plates, the speed-reducing plates, and the feeding plates are all circumferentially staggered with their corresponding lifting plates; A feeding member is installed on the right side of the drying drum. The feeding member includes a fixing plate rotatably installed at the right end inside the drying drum. A feeding port is formed in the middle of the fixing plate; The extrusion member includes extrusion plates distributed on the side of the feeding plate in the same rotation direction as the drying drum. Grid holes staggered with the aggregate grooves are formed on the extrusion plates. L-shaped connecting rods are fixedly installed at the four corners on the side of the extrusion plate close to the feeding plate. The horizontal sections of the connecting rods are located on the side of the feeding plate opposite to the rotation direction of the drying drum, and the horizontal sections of the connecting rods are fixedly connected to elastic reset rods fixedly installed on the feeding plate; A plurality of transmission rods are fixedly installed together on the opposite sides of two adjacent extrusion plates. A mating rod is fixedly installed in the middle of the right end of the rightmost extrusion plate; A plurality of circumferentially uniformly arranged elastic pressing rods are distributed at the rear part on the left side of the fixing plate. The right sides of the elastic pressing rods are fixedly connected to the fixing plate through fixing blocks. The sides of the elastic pressing rods close to the middle of the drying drum are all provided with inclined surfaces that cooperate with the mating rod; 2. The drying device for processing iron slag powder according to claim 1, characterized in that, The continuous rotation of the drying drum is realized by a driving member installed on its right side; the right end of the fixing plate is fixedly connected to the frame of the dryer through two U-shaped connecting rods arranged symmetrically front and back; 3. A drying device for processing iron slag powder according to claim 1, characterized in that, Crushing blocks corresponding to the aggregate grooves are fixedly installed on the side of the extrusion plate close to the corresponding feeding plate, and the crushing blocks are set in a triangular structure; 4. A drying device for processing iron slag powder according to claim 1, characterized in that, A plurality of arc-shaped speed-reducing plates arranged in a wavy shape are fixedly installed on the wavy surface of the speed-reducing plate. The arc-shaped speed-reducing plates are used to reduce the falling speed of the iron slag on the speed-reducing plate; 5. A drying device for processing iron slag powder according to claim 1, characterized in that, A plurality of material dividing blocks are fixedly installed on the left end of the speed-reducing plate and on the side in the same rotation direction as the drying drum. The plurality of material dividing blocks are evenly distributed along the width direction of the speed-reducing plate. The right ends of the material dividing blocks are set in a triangular structure. The material dividing blocks are used to make the iron slag fall evenly and re-crush the iron slag powder; 6. A drying device for processing iron slag powder according to claim 1, characterized in that, The high-throwing plate is set in a hollow structure. The material blocking member includes a dislocation plate installed in the high-throwing plate. The dislocation plate is slidably connected to the high-throwing plate along the length direction of the high-throwing plate through a connecting spring. Dislocation holes are formed in the dislocation plate at positions corresponding to the square holes.

7. The drying device for processing iron slag powder according to claim 6, wherein, The left end of the dislocation plate slides through the high-throw plate and is fixedly installed with a baffle plate. One end of the baffle plate away from the dislocation plate is inclined towards the same side as the rotation direction of the dislocation plate and the drying roller.

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