Rotor drying device and drying method for hot blast furnace

Abstract

A rotor drying device and drying method for a hot blast furnace, comprising a rotor drying shaft driven to rotate by a driving device and a drying outer cylinder arranged on the outer side of the rotor drying shaft and driven by the driving device to rotate in the opposite direction to the rotor drying shaft, a cavity for accommodating materials and introducing hot air is formed between the rotor drying shaft and the drying outer cylinder, a feed port and a discharge port connected to the cavity are respectively provided on the cavity, the cavity comprises a dewatering cavity close to a side of the feed port, a first material dividing portion arranged around the outer side of the rotor drying shaft is provided in the dewatering cavity, a second material dividing portion arranged around the inner wall of the drying outer cylinder is provided in the dewatering cavity, the first material dividing portion brings up part of the materials in the dewatering cavity to separate from the overall materials when the rotor drying shaft rotates to the lower end, and brings into contact with the hot air in the dewatering cavity for heat exchange, and the second material dividing portion brings up another part of the materials at the bottom of the dewatering cavity to separate from the overall materials at the lower end, and brings into contact with the hot air in the dewatering cavity for heat exchange when the drying outer cylinder rotates to the lower end.

Description

Technical Field

[0001] The invention relates to sludge treatment rotor drying equipment, and in particular to a rotor drying device for a hot blast furnace and a drying treatment method. Background Art

[0002] During sludge treatment, since the sludge contains a large amount of water, it is usually necessary to dehydrate and dry the sludge during treatment so as to facilitate subsequent incineration and harmless treatment. In the prior art, the sludge is generally dried by a rotor dryer. For example, the patent application number is: CN201410628103.2, a rotor drying device, including a horizontally placed drying main cylinder, a frame for positioning the drying main cylinder and a rotor main shaft, a feed end is arranged at one end of the drying main cylinder, and a discharge end is arranged at the other end, the drying main cylinder can rotate relative to the feed end and the discharge end, a hot flue gas inlet is arranged at the top of the feed end, and a wet flue gas outlet is arranged at the top of the discharge end, The rotor main shaft is located inside the drying main cylinder, the frame is provided with a bearing seat for positioning the rotor main shaft, the frame is provided with a main shaft driving motor that can drive the rotor main shaft to rotate and a main cylinder driving motor that can drive the drying main cylinder to rotate, the rotation direction of the rotor main shaft is opposite to that of the drying main cylinder, and the rotor main shaft is provided with a plurality of stirring push rods. The rotor drying equipment in the invention of the above-mentioned application cannot effectively dry the sludge in one time, and a secondary drying device is required to perform secondary heating and drying on the output material, which makes the structure of the overall rotor drying equipment complex and the volume relatively increased, and the corresponding production cost is also increased accordingly. Summary of the invention

[0003] The present invention aims to solve the problems existing in the above-mentioned prior art and provides a rotor drying device and a drying treatment method for a hot blast furnace. The material only needs to be dried once through the rotor drying device to ensure the drying quality and drying efficiency. The structure is relatively simple and the overall volume is small.

[0004] The present invention solves the technical problem by adopting a technical solution: the rotor drying device for a hot blast furnace comprises a rotor drying shaft driven to rotate by a driving device and a drying outer cylinder arranged on the outer side of the rotor drying shaft and driven by the driving device to rotate in the opposite direction relative to the rotor drying shaft, a cavity for accommodating materials and introducing hot air is formed between the rotor drying shaft and the drying outer cylinder, a feed port and a discharge port connected to the cavity are respectively arranged on the cavity, a stirring rod for pushing the material to move directional from the feed port to the discharge port is arranged on the outer side of the rotor drying shaft, the cavity comprises a dewatering cavity close to one side of the feed port, a plurality of first material dividing parts arranged around the outer side of the rotor drying shaft are arranged in the dewatering cavity, and a first material dividing part is arranged in the dewatering cavity. A plurality of groups of second material dividing parts are arranged on the inner wall of the drying outer cylinder in a surrounding manner. When the rotor drying shaft rotates to the lower end, the first material dividing part brings up part of the material in the dewatering chamber and separates it from the overall material so as to contact and exchange heat with the hot air in the dewatering chamber. When the drying outer cylinder rotates to the lower end, the second material dividing part brings up another part of the material at the bottom of the dewatering chamber and separates it from the overall material at the lower end so as to contact and exchange heat with the hot air in the dewatering chamber. A first material dividing part that rotates with the rotor drying shaft and a second material dividing part that rotates with the drying outer cylinder are provided. Part of the material in the dewatering chamber is separated separately by the first material dividing part and the second material dividing part, thereby relatively increasing the contact area between the material and the hot air, thereby increasing the dehydration speed of the material.

[0005] Preferably, a rotor accommodating chamber for accommodating materials is formed between the first material distribution part and the rotor drying shaft, and a first opening for entering and exiting materials is opened on the rotor accommodating chamber, which is arranged toward the rotation direction of the rotor drying shaft. The materials enter the rotor accommodating chamber through the first opening and rotate with the first material distribution part until the first material distribution part rotates to the highest point, and the materials in the rotor accommodating chamber fall out of the first opening and are re-mixed with the overall materials in the dewatering chamber.

[0006] Preferably, the second material distribution part is extended inward from the inner wall of the drying outer cylinder, and an outer cylinder accommodating chamber for accommodating materials is formed between the second material distribution part and the inner wall of the drying outer cylinder. The outer cylinder accommodating chamber is provided with a second opening for entering and exiting materials, which is arranged toward the rotation direction of the drying outer cylinder. The materials enter the outer cylinder accommodating chamber through the second opening and rotate with the second material distribution part until the second material distribution part rotates to the highest point, and the materials in the outer cylinder accommodating chamber fall out of the second opening and are re-mixed with the overall materials in the dewatering chamber.

[0007] Preferably, the cavity also includes a molding cavity connected to the dewatering cavity and a caking cavity connected to the molding cavity, an external extrusion molding part fixedly connected to the inner wall of the drying outer cylinder is provided in the molding cavity, an internal extrusion molding part fixedly connected to the outer side of the rotor drying shaft and corresponding to the external extrusion molding part is provided in the molding cavity, a molding space is formed between the internal extrusion molding part and the external extrusion molding part, the external extrusion molding part includes a first guide surface connected to the dewatering cavity and gradually inclined inward from the dewatering cavity to the molding cavity, and a first extrusion molding surface connected to the first guide surface, the internal extrusion molding part includes a second guide surface connected to the dewatering cavity and gradually inclined outward from the dewatering cavity to the molding cavity, and a second extrusion molding surface connected to the second guide surface.

[0008] Preferably, a dividing rod is provided in the agglomeration cavity, and a vertical shear surface arranged perpendicular to the axial direction of the rotor drying axis is formed on the first extrusion molding surface and the second extrusion molding surface on one side close to the agglomeration cavity. The dividing rod includes a plurality of groups of cutting rods evenly arranged on the outside of the rotor drying axis and fine cutting rods arranged on the inner wall of the drying outer cylinder and staggered with the cutting rods, and the cutting rod close to the molding cavity is arranged in contact with the vertical shear surface.

[0009] Preferably, the cavity also includes a crushing chamber connected to the agglomeration chamber, a crushing rod is provided in the crushing chamber, and the crushing rod includes a rotor shaft crushing rod arranged outside the rotor drying shaft and a guide crushing part arranged on the inner wall of the drying outer cylinder and staggered with the rotor shaft crushing rod.

[0010] Preferably, the cutting rod includes a vertical rod axially arranged in the vertical rotor drying axis, a shearing blade arranged on the outside of the vertical rod, and a material dividing and anti-sticking part arranged on the outer side of the vertical rod away from the molding cavity and connected to the shearing blade. The outer side of the material dividing and anti-sticking part is provided with a material dividing guide surface connected to the shearing blade and gradually inclined toward the rotation direction of the vertical rotor drying axis in the axial direction from the agglomeration cavity to the molding cavity.

[0011] Preferably, the rotor shaft crushing rod includes a connecting rod vertically arranged in the axial direction of the rotor drying shaft and a plurality of horizontal crushing rods arranged on the outside of the connecting rod and perpendicular to the rotation plane of the connecting rod. The guiding crushing part includes a plurality of limit blocks arranged on the inner wall of the drying outer cylinder and protruding from the inner wall of the drying outer cylinder. The limit block is provided with a limit surface opened on the outer side surface of the limit block and an acceleration guide surface arranged on a side close to the agglomeration chamber and connected to the limit surface. The limit surface and the acceleration guide surface are respectively arranged to be gradually inclined toward the outside of the drying outer cylinder in the axial direction from the crushing chamber to the agglomeration chamber, and the inclination of the acceleration guide surface is greater than the inclination of the limit surface.

[0012] Preferably, a screening groove is provided on the limit block, and the screening groove includes a guide channel opened in the limit block and gradually inclined toward the inner side of the drying outer cylinder in the axial direction from the agglomeration chamber to the crushing chamber, and a particle feed port opened on the limit surface and the acceleration guide surface and connected to the guide channel, and the width of the particle feed port is smaller than the width of the guide channel.

[0013] A method for using a rotor drying device for a hot blast furnace comprises the following steps:

[0014] Step 1: The liquid material enters the dewatering chamber of the cavity from the feed port through the pipeline, and hot air is introduced into the cavity from the feed port to the discharge port. The first material distribution part rotates under the drive of the rotor drying shaft. When it rotates to the lower end position, part of the material enters the rotor accommodating chamber from the first opening, and the first material distribution part drives the material entering the rotor accommodating chamber to separate from the overall material in the dewatering chamber until the first material distribution part rotates to the highest point and falls back into the overall material from the rotor accommodating chamber; the second material distribution part rotates under the drive of the drying outer cylinder. When it rotates to the lower end position, part of the material enters the outer cylinder accommodating chamber from the second opening, and the second material distribution part drives the material entering the outer cylinder accommodating chamber to separate from the overall material in the dewatering chamber until the second material distribution part rotates to the highest point and falls back into the overall material from the outer cylinder accommodating chamber;

[0015] Step 2: After the material in the dewatering chamber is initially dried in step 1, the liquid material is dehydrated to form a semi-solid material. The semi-solid material enters the shaping space in the molding chamber under the action of the first guide surface and the second guide surface, and is extruded into a strip material form under the action of the rotating outer extrusion molding part and the inner extrusion molding part and extruded from the left side of the molding chamber;

[0016] Step 3: The dividing rod rotates under the action of the rotor drying shaft, and the dividing rod on the right side shears the strip material extruded in step 2, so that the extruded strip material is cut into long sections in sequence and falls into the agglomeration chamber. The long sections of the material are driven by the drying outer cylinder to rotate and roll, and are further cut into small sections by the cutting rod and the fine cutting rod during the rotation and rolling process. The several small sections of the cut materials are further heat-exchanged and dehydrated with the hot air in the agglomeration chamber, so that the semi-solid material gradually loses water and hardens into a solid material;

[0017] Step 4: The solid material after step 3 enters the crushing chamber under the push of the stirring rod and the subsequent entering materials. The solid material is crushed under the action of the rotating crushing rod. At the same time, the small particles of material falling on the guide crushing part can enter the guide channel through the particle feed port, and are gradually guided to the side of the discharge port under the action of the guide channel so that the crushed small particles fall out of the discharge port. The corresponding solid material that has not been crushed cannot enter the guide channel, and is then guided to the side away from the discharge port under the action of the limiting surface to extend the crushing time of the solid material.

[0018] The beneficial effect of the present invention is as follows: the present invention is provided with a first material dividing part which rotates with the rotor drying shaft and a second material dividing part which rotates with the drying outer cylinder, and during the rotation of the first material dividing part and the second material dividing part, part of the material in the dewatering chamber is separated from the overall material and is contacted with the hot air for heat exchange, and finally when the first material dividing part and the second material dividing part move to a higher position, the separated part of the material falls again under the action of gravity and is mixed into the overall material in the dewatering chamber, and is also heat exchanged with the hot air during the falling process of the material, thereby further accelerating the dehydration and drying efficiency in the dewatering chamber, and thus ensuring the drying quality and drying efficiency of the rotor drying device; at the same time, the first material dividing part and the second material dividing part are arranged on the inner side of the drying outer cylinder, which will not affect the volume change of the overall rotor drying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the rotor drying shaft;

[0022] Figure 4 It is a schematic diagram of the structure of the drying outer cylinder;

[0023] Figure 5 for Figure 2 View in AA direction;

[0024] Figure 6 It is the structural schematic diagram of the cutting rod;

[0025] Figure 7 It is a schematic diagram of the structure of the guiding crushing part;

[0026] Figure 8 This is a schematic diagram of the structure when a plate is arranged on the rotor accommodating chamber.

[0027] Description of the accompanying drawings: 1. rotor drying shaft, 2. drying outer cylinder, 3. cavity, 3-1. dewatering cavity, 3-2. molding cavity, 3-3. agglomeration cavity, 3-4. crushing cavity, 4. feed port, 5. discharge port, 6. first material distribution part, 7. second material distribution part, 8. rotor accommodating cavity, 9. first opening, 10. outer cylinder accommodating cavity, 11. second opening, 12. outer extrusion molding part, 12-1. first guide surface, 12-2. first extrusion molding surface, 13. inner extrusion molding part, 13-1. second guide surface, 13-2. second extrusion molding surface, 14. Blocking rod, 14-1. Cutting rod, 14-2. Fine cutting rod, 15. Vertical shear surface, 17. Crushing rod, 17-1. Rotor shaft crushing rod, 17-2. Guide crushing part, 18. Vertical rod, 19. Shear blade, 20. Material separation and anti-sticking part, 21. Material separation guide surface, 22. Connecting rod, 23. Horizontal crushing rod, 24. Limit block, 25. Limit surface, 26. Acceleration guide surface, 27. Guide channel, 28. Particle feed port, 29. Plate, 30. Support sleeve, 31. Gas pipeline, 32. Pipeline, 33. Shaping space. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings:

[0029] Referring to the accompanying drawings: In this embodiment, a rotor drying device for a hot blast furnace comprises a rotor drying shaft 1 driven to rotate by a driving device and a drying outer cylinder 2 arranged on the outer side of the rotor drying shaft 1 and driven by the driving device to rotate in the opposite direction relative to the rotor drying shaft 1. A cavity 3 for accommodating materials and introducing hot air is formed between the rotor drying shaft 1 and the drying outer cylinder 2. A feed port 4 and a discharge port 5 connected to the cavity 3 are respectively provided on the cavity 3. A stirring rod for pushing the material to move directional from the feed port 4 to the discharge port 5 is provided on the outer side of the rotor drying shaft 1. In this embodiment, support sleeves 30 connected to the feed port 4 and the discharge port 5 are rotatably connected on the left and right sides of the drying outer cylinder 2, and a gas pipeline 31 is connected to the support sleeve 30. The material is fed into the cavity 3 from the feed port 4 through the pipeline 32. Figure 2 As shown, the pipeline 32 is correspondingly arranged on the right support sleeve 30, and the hot air guided out of the hot air furnace is input into the cavity 3 through the right gas pipeline 31, moves to the left through the cavity 3 to the left support sleeve 30 and is discharged from the left gas pipeline 31, and the rotor drying shaft 1 and the drying outer cylinder 2 rotate in opposite directions; Figure 2 and Figure 5 As shown, in this embodiment, the rotor drying shaft 1 rotates clockwise when viewed from left to right, and the drying outer cylinder 2 rotates counterclockwise when viewed from left to right. After the material enters the cavity 3, the contact area between the material and the hot air is increased under the action of the stirring rod, and the material is also directed from the feed port 4 to the discharge port 5.

[0030] like Figure 1 and Figure 2 As shown, since the water content of the material just entering the cavity 3 is relatively high, the material presents a fluid device. In order to accelerate the water loss rate of the material in the cavity 3, the cavity 3 in this embodiment includes a dewatering chamber 3-1 close to the side of the feed port 4, and the dewatering chamber 3-1 is provided with a plurality of groups of first material dividing parts 6 arranged around the outside of the rotor drying shaft 1, and the dewatering chamber 3-1 is provided with a plurality of groups of second material dividing parts 7 arranged around the inner wall of the drying outer cylinder 2. When the rotor drying shaft 1 rotates to the lower end, the first material dividing part 6 brings up part of the material in the dewatering chamber 3-1 to separate the material from the overall material and contact with the hot air in the dewatering chamber 3-1. When the drying outer cylinder 2 rotates to the lower end, the second material dividing part 7 brings up another part of the material at the bottom of the dewatering chamber 3-1 to separate the material from the lower end and contact with the dewatering chamber. 3-1; when the separated material loses part of its moisture due to contact with the hot air, the material falls back into the overall material under the action of gravity; specifically, when the material is dried in the dewatering chamber 3-1, the first material dividing section 6 and the second material dividing section 7 gradually rotate from bottom to top, and in this process, the materials at relative positions in the dewatering chamber 3-1 are driven to gradually separate from the overall material, and then the separated parts of the material can be heated separately by the hot air; when the first material dividing section 6 and the second material dividing section 7 gradually rotate to the highest point, in this process the separated material contacts with the hot air for dehydration and drying, and when the first material dividing section 6 and the second material dividing section 7 rotate to the highest point, the separated material falls back into the overall material at the bottom of the dewatering chamber 3-1 under the action of gravity.

[0031] Furthermore, Figure 5 As shown, a rotor accommodating chamber 8 for accommodating materials is formed between the first material distribution part 6 and the rotor drying shaft 1 in this embodiment, and a first opening 9 for material entry and exit is opened on the rotor accommodating chamber 8, which is arranged in the rotation direction of the rotor drying shaft 1. Specifically, the first material distribution part 6 in this embodiment is an arc-shaped plate fixedly arranged on the outside of the rotor drying shaft 1, and the arc-shaped plate is bent in the rotation direction of the rotor drying shaft 1, thereby forming the above-mentioned rotor accommodating chamber 8 in the rotation direction of the rotor drying shaft 1 by the first material distribution part 6; when the rotor drying shaft 1 drives the first material distribution part 6 to rotate to the position where the lower end contacts the material, the material enters the rotor accommodating chamber 8 through the first opening 9 and gradually rises and separates from the overall material at the lower end as the first material distribution part 6 rotates, and when the first material distribution part 6 rotates to the highest position, the material in the rotor accommodating chamber 8 falls out from the first opening 9 and re-enters the overall material in the dewatering chamber 3-1, and at the same time, the material also contacts the hot air in the cavity 3 during the falling process to exchange heat and lose water, thereby further accelerating the dehydration rate of the material in the dewatering chamber 3-1; similarly, Figure 5As shown, the second material distribution part 7 in this embodiment extends inward from the inner wall of the drying outer cylinder 2, and an outer cylinder accommodating chamber 10 for accommodating materials is formed between the second material distribution part 7 and the inner wall of the drying outer cylinder 2, and a second opening 11 for entering and exiting materials is provided on the outer cylinder accommodating chamber 10, which is arranged in the rotation direction of the drying outer cylinder 2; specifically, the second material distribution part 7 in this embodiment can be an arc-shaped plate fixed on the inner wall of the drying outer cylinder 2, and the arc-shaped plate arranged on the inner wall of the drying outer cylinder 2 is bent in the rotation direction of the drying outer cylinder 2; similarly, the arc-shaped plate arranged on the inner wall of the drying outer cylinder 2 The arc-shaped plate forms an outer cylinder accommodating chamber 10 in the rotation direction of the drying outer cylinder 2. When the drying outer cylinder 2 drives the second material dividing part 7 to rotate, the second material dividing part 7 gradually rotates to the bottom of the dewatering chamber 3-1. During this process, the material at the bottom of the dewatering chamber 3-1 enters the outer cylinder accommodating chamber 10 through the second opening 11, and gradually rises and separates from the overall material at the lower end as the second material dividing part 7 rotates to the highest position. When the second material dividing part 7 rotates to the highest position, the material in the outer cylinder accommodating chamber 10 falls out from the second opening 11 and re-enters the overall material in the dewatering chamber 3-1. Furthermore, as Figure 8 As shown, in order to accommodate more materials in the rotor accommodating chamber 8 and the outer cylinder accommodating chamber 10, the arc-shaped plate can have a larger curvature, and at the same time, the two sides of the arc-shaped plate can be blocked by the plate 29, so that only one entrance and exit is provided on the rotor accommodating chamber 8 and the outer cylinder accommodating chamber 10, thereby ensuring that the rotor accommodating chamber 8 and the outer cylinder accommodating chamber 10 can only escape from the accommodating chamber when they are rotated to the highest position.

[0032] Furthermore, the cavity 3 also includes a forming cavity 3-2 connected to the dewatering cavity 3-1 and a caking cavity 3-3 connected to the forming cavity 3-2; Figure 2As shown, in this embodiment, from right to left are the water removal chamber 3-1, the molding chamber 3-2 and the agglomeration chamber 3-3; specifically, in this embodiment, the molding chamber 3-2 is provided with an external extrusion molding portion 12 fixedly connected to the inner wall of the drying outer cylinder 2, and the molding chamber 3-2 is provided with an internal extrusion molding portion 13 fixedly connected to the outer side of the rotor drying shaft 1 and arranged corresponding to the external extrusion molding portion 12, and a molding space 33 is formed between the internal extrusion molding portion 13 and the external extrusion molding portion 12, the external extrusion molding portion 12 includes a first guide surface 12-1 connected to the water removal chamber 3-1 and gradually inclined inwardly from the water removal chamber 3-1 to the molding chamber 3-2, and a first extrusion molding surface 12-2 connected to the first guide surface 12-1, and the internal extrusion molding portion 13 includes a first extrusion molding surface 12-2 connected to the first extrusion molding surface 12-1, and the internal extrusion molding portion 13 includes a first extrusion molding surface 12-2 connected to the first extrusion molding surface 12-1, and the internal extrusion molding portion 13 includes a first extrusion molding surface 12-2 connected to the first extrusion molding surface 12-2, and the internal extrusion molding surface ... The first extrusion molding surface 12-2 and the second extrusion molding surface 13-2 are connected to the agglomeration cavity 3-3, and a second guide surface 13-1 is gradually inclined outward from the dewatering cavity 3-1 to the molding cavity 3-2, and a second extrusion molding surface 13-2 is connected to the second guide surface 13-1; at the same time, in this embodiment, a dividing rod 14 is provided in the agglomeration cavity 3-3, and a vertical shear surface 15 arranged perpendicular to the axial direction of the rotor drying axis 1 is formed on the first extrusion molding surface 12-2 and the second extrusion molding surface 13-2 on the side close to the agglomeration cavity 3-3. The dividing rod 14 includes a plurality of groups of cutting rods 14-1 evenly arranged on the outside of the rotor drying axis 1 and fine cutting rods 14-2 arranged on the inner wall of the drying outer cylinder 2 and staggered with the cutting rods 14-1. The cutting rod 14-1 on the side close to the molding cavity 3-2 is arranged in contact with the vertical shear surface 15.

[0033] After the material is dehydrated in large quantities in the dehydration chamber 3-1, it forms a semi-solid state with flexibility and can be bonded and agglomerated. The semi-solid material enters the shaping space 33 through the first guide surface 12-1 and the second guide surface 13-1, and is squeezed into a strip structure under the action of the counter-rotating rotor drying shaft 1 and the drying outer cylinder 2 and is extruded from the left side of the forming chamber 3-2. In this process, the hot air also moves to the left through the shaping space 33 to the agglomeration chamber 3-3, and exchanges heat with the extruded strip material during the movement; the extruded strip material is cut into several long sections by the cutting rod 14-1 and enters the agglomeration chamber 3-3; further, as Figure 6As shown, the cutting rod 14-1 in this embodiment includes a vertical rod 18 axially arranged on the vertical rotor drying axis 1, a shearing blade 19 arranged on the outside of the vertical rod 18, and a dividing and anti-sticking portion 20 arranged on the outer side of the vertical rod 18 away from the molding cavity 3-2 and connected to the shearing blade 19; in order to prevent the strip-shaped material from sticking again after the cutting rod 14-1 shears the strip-shaped material, in this embodiment, a dividing guide surface 21 connected to the shearing blade 19 is provided on the outer side of the dividing and anti-sticking portion 20 and gradually inclined in the axial direction from the agglomeration cavity 3-3 to the molding cavity 3-2 toward the rotation direction of the vertical rotor drying axis 1; and then, after the shearing blade 19 shears the strip-shaped material, the cut-off part of the material will move outward a certain distance under the action of the dividing guide surface 21 and then separate from the original The strip materials are completely separated, thereby preventing the cut materials from re-bonding with the subsequently cut materials; the long sections of materials cut in the agglomeration chamber 3-3 are further cut into small sections by the cutting rod 14-1 and the fine cutting rod 14-2 during the rotation process, and the several small sections of materials after cutting are further heat-exchanged and dehydrated with the hot air in the agglomeration chamber 3-3, thereby causing the semi-solid materials to gradually lose water and harden into solid materials. Furthermore, in order to further promote the directional movement of materials and ensure the drying efficiency, the stirring rods in this embodiment can be correspondingly arranged in the water removal chamber 3-1 and the agglomeration chamber 3-3, thereby allowing the liquid material in the water removal chamber 3-1 to be directed toward the forming chamber 3-2, and the solid material in the agglomeration chamber 3-3 to be directed toward the crushing chamber 3-4.

[0034] like Figure 2 As shown, in this embodiment, the solid material in the agglomeration chamber 3-3 needs to be further crushed, so that the cavity 3 also includes a crushing chamber 3-4 connected to the agglomeration chamber 3-3, and a crushing rod 17 is provided in the crushing chamber 3-4. The crushing rod 17 includes a rotor shaft crushing rod 17-1 arranged on the outside of the rotor drying shaft 1 and a guide crushing part 17-2 arranged on the inner wall of the drying outer cylinder 2 and staggered with the rotor shaft crushing rod 17-1; specifically, as Figure 2 and Figure 3 As shown, the rotor shaft crushing rod 17-1 in this embodiment includes a connecting rod 22 vertically arranged axially on the rotor drying shaft 1 and a plurality of horizontal crushing rods 23 arranged on the outside of the connecting rod 22 and perpendicular to the rotation plane of the connecting rod 22. The vertical connecting rod 22 and the horizontal crushing rod 23 are driven to rotate by the rotation of the rotor drying shaft 1, and then the solid material is impacted by the vertical connecting rod 22 and the horizontal crushing rod 23, and then the solid material in the crushing chamber 3-4 is crushed.

[0035] Further, such as Figure 7As shown, in order to ensure that the material in this embodiment is completely crushed, the guiding crushing part 17-2 includes a plurality of limit blocks 24 arranged on the inner wall of the drying outer cylinder 2 and protruding from the inner wall of the drying outer cylinder 2. The limit block 24 is provided with a limit surface 25 opened on the outer side of the limit block 24 and an acceleration guide surface 26 arranged on the side close to the agglomeration chamber 3-3 and connected to the limit surface 25. The limit surface 25 and the acceleration guide surface 26 are respectively arranged to be gradually inclined toward the outside of the drying outer cylinder 2 in the axial direction from the crushing chamber 3-4 to the agglomeration chamber 3-3, and the inclination of the acceleration guide surface 26 is greater than the inclination of the limit surface 25; the limit block 24 is provided with a screening groove, which includes a guide channel 27 opened in the limit block 24 and gradually inclined toward the inside of the drying outer cylinder 2 in the axial direction from the agglomeration chamber 3-3 to the crushing chamber 3-4, and a particle feeding port 28 opened on the limit surface 25 and the acceleration guide surface 26 and connected to the guide channel 27, so that the particles falling on the limit block 24 can be easily crushed. The small particle materials on the guided crushing part 17-2 can enter the guide channel 27 through the particle feed port 28, and are gradually guided to the left discharge port 5 under the action of the guide channel 27, while the corresponding solid materials that have not been crushed cannot enter the guide channel 27, and are then guided to the side away from the discharge port 5 under the action of the limiting surface 25 to extend the crushing time of the solid materials. At the same time, an acceleration guide surface 26 is connected to the limiting surface 25, which can further increase the moving speed of the solid materials, thereby increasing the impact force when the solid materials contact and crush with the rotor shaft crushing rod 17-1, so as to further improve the crushing efficiency; at the same time, the width of the particle feed port 28 in this embodiment is smaller than the width of the guide channel 27, and when the material blocked in the particle feed port 28 is hit by other materials and falls into the guide channel 27, it will not cause the blockage of the guide channel 27, thereby avoiding the incomplete crushing caused by the long-term blockage of the guide channel 27.

[0036] Certain words are used in the specification and claims of the present invention to refer to specific products. It should be understood by those skilled in the art that manufacturers may refer to the same component by different names. It is not intended to distinguish between components that have the same function but different names. In the following specification and patent scope, the words "comprise", "have" and "include" are open-ended words and should be interpreted as "including but not limited to...".

[0037] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A rotor drying device for a hot blast furnace, comprising a rotor drying shaft (1) driven to rotate by a driving device and a drying outer cylinder (2) arranged outside the rotor drying shaft (1) and driven by the driving device to rotate in the opposite direction relative to the rotor drying shaft (1), a cavity (3) for accommodating materials and introducing hot air is formed between the rotor drying shaft (1) and the drying outer cylinder (2), a feed port (4) and a discharge port (5) respectively connected to the cavity (3) are provided on the cavity (3), a stirring rod for driving the materials to move in a directional manner from the feed port (4) to the discharge port (5) is provided on the outside of the rotor drying shaft (1), and the characteristics are: The cavity (3) comprises a dewatering chamber (3-1) on one side close to the feed port (4), wherein the dewatering chamber (3-1) is provided with a plurality of first material distribution parts (6) arranged around the outside of the rotor drying shaft (1), and wherein the dewatering chamber (3-1) is provided with a plurality of second material distribution parts (7) arranged around the inner wall of the drying outer cylinder (2), wherein the first material distribution parts (6) carry part of the material in the dewatering chamber (3-1) away from the overall material when the rotor drying shaft (1) rotates to the lower end, and the first material distribution parts (6) carry part of the material in the dewatering chamber (3-1) away from the overall material, and the material is contacted with the hot air in the dewatering chamber (3-1) for heat exchange, and the second material distribution parts (7) carry another part of the material at the bottom of the dewatering chamber (3-1) away from the overall material at the lower end, and the material is contacted with the hot air in the dewatering chamber (3-1) for heat exchange when the drying outer cylinder (2) rotates to the lower end; The cavity (3) further comprises a molding cavity (3-2) connected to the dewatering cavity (3-1) and a caking cavity (3-3) connected to the molding cavity (3-2); an outer extrusion molding portion (12) fixedly connected to the inner wall of the drying outer cylinder (2) is provided in the molding cavity (3-2); an inner extrusion molding portion (13) fixedly connected to the outer side of the rotor drying shaft (1) and corresponding to the outer extrusion molding portion (12) is provided in the molding cavity (3-2); a molding space (33) is formed between the inner extrusion molding portion (13) and the outer extrusion molding portion (12); The outer extrusion shaping portion (12) comprises a first guide surface (12-1) connected to the water removal cavity (3-1) and arranged to be gradually inclined inward from the water removal cavity (3-1) to the molding cavity (3-2), and a first extrusion molding surface (12-2) connected to the first guide surface (12-1); the inner extrusion shaping portion (13) comprises a second guide surface (13-1) connected to the water removal cavity (3-1) and arranged to be gradually inclined outward from the water removal cavity (3-1) to the molding cavity (3-2), and a second extrusion molding surface (13-2) connected to the second guide surface (13-1); The cavity (3) further comprises a crushing chamber (3-4) connected to the agglomeration chamber (3-3), a crushing rod (17) being arranged in the crushing chamber (3-4), the crushing rod (17) comprising a rotor shaft crushing rod (17-1) arranged outside the rotor drying shaft (1) and a guide crushing portion (17-2) arranged on the inner wall of the drying outer cylinder (2) and staggered with the rotor shaft crushing rod (17-1).

2. A rotor drying device for a hot blast stove according to claim 1, characterized in that: A rotor accommodating chamber (8) for accommodating materials is formed between the first material distribution portion (6) and the rotor drying shaft (1), and a first opening (9) for the entry and exit of materials is provided on the rotor accommodating chamber (8) and is arranged in the direction of rotation of the rotor drying shaft (1).

3. A rotor drying device for a hot blast furnace according to claim 1 or 2, characterized in that: The second material distribution portion (7) is extended inwardly from the inner wall of the drying outer cylinder (2), and an outer cylinder accommodating chamber (10) for accommodating materials is formed between the second material distribution portion (7) and the inner wall of the drying outer cylinder (2). The outer cylinder accommodating chamber (10) is provided with a second opening (11) arranged toward the rotation direction of the drying outer cylinder (2) for the entry and exit of materials.

4. The rotor drying device for a hot blast stove according to claim 1, characterized in that: A dividing rod (14) is provided in the agglomeration cavity (3-3); a vertical shearing surface (15) arranged perpendicular to the axial direction of the rotor drying axis (1) is formed on the first extrusion molding surface (12-2) and the second extrusion molding surface (13-2) on one side close to the agglomeration cavity (3-3); the dividing rod (14) comprises a plurality of groups of cutting rods (14-1) evenly arranged on the outside of the rotor drying axis (1) and fine cutting rods (14-2) arranged on the inner wall of the drying outer cylinder (2) and staggered with the cutting rods (14-1); the cutting rod (14-1) on one side close to the molding cavity (3-2) is arranged in contact with the vertical shearing surface (15).

5. The rotor drying device for a hot blast furnace according to claim 4, characterized in that: The cutting rod (14-1) comprises a vertical rod (18) arranged axially of the vertical rotor drying shaft (1), a shearing blade (19) arranged outside the vertical rod (18), and a material distribution and anti-sticking portion (20) arranged on the outer side of the vertical rod (18) away from the molding cavity (3-2) and connected to the shearing blade (19); a material distribution and anti-sticking portion (20) is provided on the outer side of the material distribution and anti-sticking portion (20), which is connected to the shearing blade (19) and is gradually inclined toward the rotation direction of the vertical rotor drying shaft (1) in the axial direction from the agglomeration cavity (3-3) to the molding cavity (3-2).

6. The rotor drying device for a hot blast stove according to claim 1, characterized in that: The rotor shaft crushing rod (17-1) comprises a connecting rod (22) arranged vertically and axially of the rotor drying shaft (1) and a plurality of horizontal crushing rods (23) arranged outside the connecting rod (22) and arranged vertically to the rotation plane of the connecting rod (22); the guide crushing part (17-2) comprises a plurality of limit blocks (24) arranged on the inner wall of the drying outer cylinder (2) and protruding from the inner wall of the drying outer cylinder (2); the limit blocks (24) are provided with a limit surface (25) opened on the outer side surface of the limit blocks (24) and an acceleration guide surface (26) arranged on a side close to the agglomeration chamber (3-3) and connected to the limit surface (25); the limit surface (25) and the acceleration guide surface (26) are respectively arranged to be gradually inclined toward the outer side of the drying outer cylinder (2) in the axial direction from the crushing chamber (3-4) to the agglomeration chamber (3-3); the inclination of the acceleration guide surface (26) is greater than the inclination of the limit surface (25).

7. The rotor drying device for a hot blast stove according to claim 6, characterized in that: The limit block (24) is provided with a screening slot, the screening slot comprising a guide channel (27) opened in the limit block (24) and gradually inclined toward the inner side of the drying outer cylinder (2) in the axial direction from the agglomeration chamber (3-3) to the crushing chamber (3-4), and a particle feed port (28) opened on the limit surface (25) and the acceleration guide surface (26) and connected to the guide channel (27), wherein the width of the particle feed port (28) is smaller than the width of the guide channel (27).

8. The method for using the rotor drying device for a hot blast furnace according to claim 7, comprising the following steps: Step 1: The liquid material enters the dewatering chamber (3-1) of the cavity (3) from the feed port (4) through the pipeline (32), and hot air flows from the feed port (4) to the discharge port (5) in the cavity (3). The first material distribution part (6) rotates under the drive of the rotor drying shaft (1). When it rotates to the lower end position, part of the material enters the rotor accommodating chamber (8) from the first opening (9). The first material distribution part (6) drives the material entering the rotor accommodating chamber (8) to separate from the overall material in the dewatering chamber (3-1) until When the first material distribution part (6) rotates to the highest position, it falls back from the rotor accommodating chamber (8) into the overall material; the second material distribution part (7) rotates under the drive of the drying outer cylinder (2), and when it rotates to the lower end position, part of the material enters the outer cylinder accommodating chamber (10) from the second opening (11), and the second material distribution part (7) drives the material entering the outer cylinder accommodating chamber (10) to separate from the overall material in the dewatering chamber (3-1) until the second material distribution part (7) rotates to the highest position and falls back from the outer cylinder accommodating chamber (10) into the overall material; Step 2: After the material in the dewatering chamber (3-1) is initially dried in step 1, the liquid material is dehydrated to form a semi-solid material. The semi-solid material enters the shaping space (33) in the shaping chamber (3-2) under the action of the first guide surface (12-1) and the second guide surface (13-1), and is squeezed into a strip-shaped material form under the action of the rotating external extrusion shaping part (12) and the internal extrusion shaping part (13), and is extruded from the left side of the shaping chamber (3-2); Step 3: The dividing rod (14) rotates under the action of the rotor drying shaft (1), and the dividing rod (14) on the right side shears the strip material extruded in step 2, so that the extruded strip material is cut into long segments in sequence and falls into the agglomeration chamber (3-3). The long segments are driven by the drying outer cylinder (2) to rotate and roll, and are further cut into small segments by the cutting rod (14-1) and the fine cutting rod (14-2) during the rotation and rolling process. The several small segments of the cut materials are further heat-exchanged and dehydrated with the hot air in the agglomeration chamber (3-3), so that the semi-solid material gradually loses water and hardens to become a solid material; Step 4: The solid material after step 3 enters the crushing chamber (3-4) under the push of the stirring rod and the subsequent entering materials. The solid material is crushed under the action of the rotating crushing rod (17). At the same time, the small particles of material falling on the guide crushing part (17-2) can enter the guide channel (27) through the particle feed port (28), and are gradually guided to the side of the discharge port (5) under the action of the guide channel (27) so that the crushed small particles fall out of the discharge port (5). The corresponding solid material that has not been crushed cannot enter the guide channel (27), and is then guided to the side away from the discharge port (5) under the action of the limit surface (25) to extend the crushing time of the solid material.

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