A kind of protective slag drying device and method

Abstract

The present invention relates to the technical field of powder drying, and specifically discloses a protective slag drying device and method, wherein the protective slag drying device includes a base, a drying drum 1 and a driving assembly, a heating assembly is provided on the outer periphery of the drying drum 1, convex strips are evenly spaced on the inner periphery of the drying drum 1, end covers are provided at both ends of the drying drum 1, and arc plates are connected to the end covers, a drying drum 2 is provided inside the drying drum 1, a discharge assembly is connected to the drying drum 2, a stirring device is provided inside the drying drum 2, when the convex strips are in contact with the arc plates, two adjacent convex strips, the inner wall of the drying drum 1 and the arc plates form a space for storing protective slag, and when the convex strips are out of contact with the arc plates, the protective slag falls into the drying drum 2. The protective slag drying device and method of the present invention can improve the phenomenon that protective slag with a better drying degree is mixed again with protective slag with a higher moisture content, and achieve the effect of timely drying and discharging protective slag with a better drying degree.

Description

Technical Field

[0001] The invention relates to the technical field of powder drying, and in particular to a protective slag drying device and method. Background Art

[0002] During use, the mold slag needs to form a specific three-layer structure (powder slag layer - sintered layer - liquid slag layer) on the molten steel surface to play its various functions. If there is water in the mold slag, the water will destroy the formation of this structure and affect the melting speed and pattern of the mold slag. Therefore, the mold slag needs to be dried.

[0003] A Chinese patent with announcement number CN220959306U discloses a drum dryer for metal powder coating production, including a support base, the top of the support base is fixedly connected to a support outer cylinder, the inside of the support outer cylinder is rotatably connected to a loading inner cylinder, the inner wall of the support outer cylinder is fixedly connected to a plurality of electric heating wires, one end of the support outer cylinder is connected to a sealing door via a hinge, the outside of the support outer cylinder is fixedly connected to an air supply pipe, and the other end of the support outer cylinder is provided with a transmission mechanism, the transmission mechanism is used to cooperate with the electric heating wire to form a drying process for metal powder coating raw materials, and the transmission mechanism includes an extension frame, a positioning shaft, a transmission shaft, a transmission motor, a transmission worm, a matching worm gear and a contact sheet.

[0004] The above technical solution utilizes the transmission shaft to drive the inner cylinder of the material carrier to rotate, thereby causing the metal powder coating raw materials to be turned over, so that the raw materials can be heated evenly, and thus the moisture in the raw materials can be fully removed. Through the structural design of the air supply fan, hot air can be introduced into the positioning shaft to heat its surface, and then the contact between the metal powder coating raw materials and the positioning shaft can be utilized to assist the electric heating wire in drying, thereby improving the overall drying efficiency.

[0005] However, in the actual drying process, since the loading inner cylinder is close to the electric heating wire, the powder in contact with the inner wall of the loading inner cylinder will be heated and dried first, while the moisture content of the powder not in contact with the inner wall of the loading inner cylinder is still relatively high. During the rotation of the loading inner cylinder, the powder that is heated and dried first will be mixed with the powder with relatively high moisture content, resulting in the powder with relatively high moisture content unable to contact and heat with the inner wall of the loading inner cylinder in time, and the dried powder is repeatedly contacted and heated with the inner wall of the loading inner cylinder, which not only wastes energy, but also greatly affects the drying efficiency.

[0006] Therefore, the art needs a protective slag drying device and method to solve the above problems. Summary of the invention

[0007] The present invention provides a protective slag drying device and method, aiming to solve the problem that the drying device in the related art cannot discharge the dried material out of the loading inner cylinder in time, causing energy waste and affecting the drying efficiency.

[0008] On the one hand, the present invention provides a protective slag drying device, comprising a base, a drying cylinder 1 arranged on the base and a driving assembly driving the drying cylinder 1 to rotate, a heating assembly is arranged on the outer periphery of the drying cylinder 1, the extension direction of the central axis of the drying cylinder 1 is defined as the left and right direction, convex strips are evenly arranged on the inner periphery of the drying cylinder 1, end covers connected to the base are respectively arranged on the left and right ends of the drying cylinder 1, an arc-shaped plate fitted with the convex strips is fixedly connected to the end covers, a drying cylinder 2 fixedly connected to the base is arranged inside the drying cylinder 1, a feeding port and a discharging port are opened in the drying cylinder 2, a discharging port is connected to a discharging assembly, and a stirring device is arranged inside the drying cylinder 2;

[0009] During the rotation of drying drum one, when the convex strips come into contact with the arc plate, the two adjacent convex strips, the inner wall of drying drum one and the arc plate form a space for storing protective slag. When the convex strips are separated from the arc plate, the protective slag falls into the feed port of drying drum two, and after being stirred by the stirring device, it enters the discharge assembly for discharge.

[0010] The present invention forms a space for storing protective slag through two adjacent convex strips, the inner wall of the drying cylinder and the arc plate. During the rotation of the drying cylinder, the convex strips drive the protective slag to move along the arc plate, so as to separate the protective slag close to the inner wall of the drying cylinder from the protective slag at other positions, avoid re-mixing of the protective slag with a better drying degree and the protective slag with a higher moisture content, and in the process of moving along the arc plate, the protective slag close to the inner wall of the drying cylinder is further heated and dried; after the convex strip is separated from the contact with the arc plate, the protective slag between the two adjacent convex strips falls into the drying cylinder, is stirred and dried for a second time, and the energy is fully utilized while the drying effect of the protective slag is improved.

[0011] Preferably, a push plate is provided between two adjacent convex strips, and the push plate slides with the convex strip along the radial direction of the drying cylinder. The protective slag drying device also includes a driving structure for driving the push plate to move along the radial direction of the drying cylinder. When the space between two adjacent convex strips is aligned with the feed port, the driving structure drives the push plate to move toward the center of the drying cylinder.

[0012] The present invention drives the push plate to move toward the center of the drying cylinder one, which is beneficial for quickly pushing the protective slag between two adjacent convex strips into the drying cylinder two during the rotation of the drying cylinder one, so that the protective slag with a better degree of drying can be discharged from the drying cylinder one in time, which helps to quickly dry the remaining protective slag in the drying cylinder one.

[0013] Preferably, the driving structure includes a spring and a guide groove arranged on the two end covers, the left and right ends of the push plate are respectively fixedly connected with guide blocks extending into the guide groove, the spring is connected between the push plate and the inner wall of the drying cylinder 1, the elastic force of the spring squeezes the guide block of the push plate against the groove wall of the guide groove, the guide groove includes a guide section 1 and a guide section 2, the guide section 2 corresponds to the position of the feed port, and when the guide block is located in the guide section 1, the distance between the push plate and the center of the drying cylinder 1 is greater than the distance between the push plate and the center of the drying cylinder 1 when the guide block is located in the guide section 2.

[0014] By providing the guide groove and the guide block, when the drying drum rotates, the guide groove can drive the push plate to move through the cooperation of the guide block and the spring. The structure is simple and ingenious, and no additional driving source is required, thus saving costs.

[0015] Preferably, a crushing assembly is arranged between two adjacent convex strips, and the crushing assembly includes crushing rods evenly spaced along the left-right direction, the crushing rods are located on the side of the push plate toward the center of the drying cylinder, and the crushing rods are fixedly connected to a mounting rod passing through the push plate, and the protective slag drying device also includes a driving member that drives the mounting rod to drive the crushing rod to rotate.

[0016] Since the protective slag to be dried contains a certain amount of moisture, there may be agglomeration in the protective slag after entering the drying cylinder. The present invention provides a crushing rod to stir and beat the protective slag between two adjacent convex strips, which is beneficial to crushing the agglomerates and improving the drying efficiency.

[0017] Preferably, the driving member includes gear 1, a ring gear and a transmission assembly. One end of the push plate is rotatably connected to a mounting shaft, and the mounting shaft slides with the push plate along its axial direction. Gear 1 is fixedly connected to the mounting shaft, the ring gear is arranged on the corresponding end cover, and the mounting shaft is transmission-connected to each mounting rod through the transmission assembly. During the rotation of the drying cylinder 1, gear 1 rotates along the ring gear, and the mounting shaft fixedly connected to gear 1 drives the mounting rod and the breaking rod to rotate through the transmission assembly.

[0018] Preferably, the transmission assembly includes gear 2 fixedly connected to the mounting shaft, gear 3 fixedly connected to each mounting rod, and a toothed belt meshing with gear 2 and gear 3. The mounting shaft drives gear 2 to rotate, gear 2 drives gear 3 to rotate through the toothed belt, and gear 3 drives the corresponding mounting rod and breaking rod to rotate.

[0019] Preferably, the stirring device includes a motor 1, a stirring shaft and stirring blades, the motor 1 is fixedly connected to the drying cylinder 2, the stirring shaft is fixedly connected to the output end of the motor 1, and the stirring blades are evenly distributed along the circumference of the stirring shaft and fixedly connected to the stirring shaft.

[0020] Preferably, a movable plate is hinged at one end of the stirring blade away from the stirring shaft, and a torsion spring is arranged at the hinge. When the movable plate is not subject to external force, it is located in the same plane with the corresponding stirring blade. A scraper is arranged at the discharge port of the second drying cylinder. When the stirring blade rotates upward until the movable plate contacts the scraper, the scraper pushes the movable plate to rotate and scrapes the protective slag on the movable plate close to the wall of the second drying cylinder into the discharge assembly.

[0021] Since the wall temperature of the drying drum 2 is relatively high, the protective slag close to the wall of the drying drum 2 is dried to a better degree. By setting a scraper, the protective slag with a better degree of drying can be discharged in time, and the other protective slag continues to remain in the drying drum 2 for drying, thereby realizing graded drying of the protective slag, making full use of energy and improving the drying effect and efficiency.

[0022] Preferably, the discharge assembly includes a discharge barrel and an auger structure disposed in the discharge barrel, and the rotating shaft of the auger structure is transmission-connected to a motor via a transmission member.

[0023] On the other hand, the present invention further provides a method for drying a protective slag, using the protective slag drying device described in any one of the above preferred technical solutions, the protective slag drying method comprising the following steps:

[0024] Turn on the heating component to heat the drying drum 1, control the driving component to drive the drying drum 1 to rotate, and control the stirring device to stir in the drying drum 2;

[0025] Put the protective slag into the drying cylinder 1. During the rotation of the drying cylinder 1, the two adjacent convex strips bring the protective slag close to the inner wall of the drying cylinder 1 into between the arc plate and the drying cylinder 1. As the drying cylinder 1 rotates, the protective slag falls into the drying cylinder 2 for secondary drying.

[0026] The stirring device in the second drying drum stirs the protective slag and then sends it to the discharge assembly for discharge.

[0027] The beneficial effects of a protective slag drying method of the present invention are the same as the beneficial effects of the above-mentioned protective slag drying device, which will not be repeated here.

[0028] The beneficial effects of the present invention are:

[0029] (1) The present invention uses the convex strips to bring the protective slag close to the inner wall of the drying cylinder into between the arc plate and the inner wall of the drying cylinder, so as to separate the protective slag close to the inner wall of the drying cylinder from the protective slag at other positions, thereby preventing the protective slag with a better drying degree from being mixed with the protective slag with a higher moisture content, thereby improving the drying efficiency. In addition, in the process of moving along the arc plate, the protective slag close to the inner wall of the drying cylinder is further heated and dried, thereby improving the drying effect.

[0030] (2) The present invention provides a second drying drum. After the convex strips are separated from the contact with the arc plate, the protective slag between two adjacent convex strips falls into the second drying drum. Since the second drying drum is located inside the first drying drum, the inside of the second drying drum is also heated. After the protective slag falls into the second drying drum, it is stirred and dried for a second time, thereby fully utilizing energy and further improving the drying effect of the protective slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a protective slag drying device of the present invention.

[0032] Figure 2 A cross-sectional view of a protective slag drying device according to the present invention Figure 1 .

[0033] Figure 3 A cross-sectional view of a protective slag drying device according to the present invention Figure 2 .

[0034] Figure 4 It is a structural schematic diagram of an end cover of a protective slag drying device of the present invention.

[0035] Figure 5 The structure diagram of the push plate and stirring rod of the protective slag drying device of the present invention is Figure 1 .

[0036] Figure 6 The structure diagram of the push plate and stirring rod of the protective slag drying device of the present invention is Figure 2 .

[0037] Figure 7 It is a structural schematic diagram of a protective slag drying device of the present invention when the end cover is removed.

[0038] Figure 8 yes Figure 7 A partial enlarged view of part A.

[0039] Reference numerals:

[0040] 1. Base; 11. Support wheel; 12. Drive motor; 2. Drying cylinder 1; 21. Support ring; 22. Gear ring; 23. Heating assembly; 3. Feed cylinder; 4. Raised strip; 5. End cover; 51. Arc plate; 52. Guide section 1; 53. Guide section 2; 54. Gear ring; 6. Drying cylinder 2; 60. Bracket; 61. Feed port; 62. Discharge port; 63. Scraper; 7. Push plate; 71. Guide block; 72. Spring; 73. Mounting shaft; 74. Gear 1; 75. Gear 2; 8. Breaking rod; 81. Mounting rod; 82. Gear 3; 84. Toothed belt; 9. Stirring blade; 91. Motor 1; 92. Stirring shaft; 93. Movable plate; 10. Discharge cylinder; 101. Drive wheel 1; 102. Drive belt. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0042] like Figures 1 to 8 As shown, a protective slag drying device of the present invention comprises a base 1, a drying cylinder 2 arranged on the base 1 and a driving assembly driving the drying cylinder 2 to rotate. Two groups of supporting assemblies are arranged on the base 1. The supporting assembly comprises supporting wheels 11 symmetrically arranged on both sides of the drying cylinder 2. The supporting wheels 11 are rotatably connected to the base 1. The outer periphery of the drying cylinder 2 is fixedly connected with a supporting ring 21, and the supporting ring 21 is supported between the corresponding two supporting wheels 11. The driving assembly comprises a driving motor 12 and a gear ring 22. The driving motor 12 is fixedly mounted on the base 1. The gear ring 22 is fixedly connected to the drying cylinder 2. The output end of the driving motor 12 is fixedly connected with a gear 4 (not shown in the figure) meshing with the gear ring 22. The driving motor 12 drives the gear 4 to rotate, and the gear 4 drives the drying cylinder 2 to rotate through the gear ring 22.

[0043] A feed assembly is arranged inside the drying cylinder 2, and the feed assembly includes a feed cylinder 3 fixedly mounted on the base 1 and an auger structure (not shown in the figure) arranged inside the feed cylinder 3. A leakage hole (not shown in the figure) is provided on the feed cylinder 3, and a motor 2 (not shown in the figure) is fixedly connected to the rotating shaft of the auger structure. The motor 2 drives the auger structure to push the protective slag to move along the feed cylinder 3. During the movement of the protective slag, it falls into the drying cylinder 2 from the leakage hole on the feed cylinder 3. A heating assembly 23 is arranged on the periphery of the drying cylinder 2, and the heating assembly 23 includes a heat preservation shell arranged around the periphery of the drying cylinder 2 and an electric heating wire arranged in the heat preservation shell.

[0044] The extension direction of the central axis of the drying cylinder 2 is defined as the left-right direction. The inner circumference of the drying cylinder 2 is evenly spaced with convex strips 4, which extend in the left-right direction. The left and right ends of the drying cylinder are respectively provided with end covers 5 connected to the base 1, and the end covers 5 are rotatably matched with the drying cylinder 2. An arc plate 51 is fixedly connected to the end cover 5, and the arc plate 51 fits with the side of the convex strip 4 facing the center of the drying cylinder 2. A drying cylinder 2 6 is fixedly connected to the base 1 through a bracket 60 in the drying cylinder 2. The drying cylinder 2 6 is provided with a feed port 61 and a discharge port 62. The discharge port 62 is connected to a discharge assembly, and a stirring device is provided inside the drying cylinder 2 6.

[0045] The drying cylinder 2 drives the convex strips 4 to rotate upward, and when the convex strips 4 come into contact with the arc plate 51, two adjacent convex strips 4, the inner wall of the drying cylinder 2 and the arc plate 51 form a space for storing the protective slag, and in the process of the drying cylinder 2 continuing to rotate, the convex strips 4 drive the protective slag to move along the arc plate 51, so as to separate the protective slag close to the inner wall of the drying cylinder 2 from the protective slag at other positions, and avoid remixing of the protective slag with a better drying degree and the protective slag with a higher moisture content, and in the process of moving along the arc plate 51, the protective slag close to the inner wall of the drying cylinder 2 is The protective slag on the wall is further heated and dried. After the convex strips 4 are separated from the contact with the arc plate 51, the space between the two adjacent convex strips 4 is aligned with the feed port 61 of the drying cylinder 2 6, and the protective slag between the two adjacent convex strips 4 falls into the drying cylinder 2 6. Since the drying cylinder 2 6 is located in the drying cylinder 1 2, the inside of the drying cylinder 2 6 is also heated. After the protective slag falls into the drying cylinder 2 6, it is stirred and dried for a second time, which fully utilizes the energy while improving the drying effect of the protective slag. Finally, the protective slag is sent into the discharge assembly by the stirring device for discharge.

[0046] like Figures 3 to 8 As shown, in order to clearly show the structure, only one push plate 7 is shown in the attached figure. A push plate 7 is arranged between two adjacent convex strips 4, and the push plate 7 slides with the convex strips 4 along the radial direction of the drying cylinder 2. The protective slag drying device also includes a driving structure for driving the push plate 7 to move along the radial direction of the drying cylinder 2, and the driving structure includes a spring 72 and a guide groove arranged on the two end covers 5. The left and right ends of the push plate 7 are respectively fixedly connected with guide blocks 71 extending into the guide groove. The spring 72 is connected between the push plate 7 and the inner wall of the drying cylinder 2, and the elastic force of the spring 72 presses the guide block 71 of the push plate 7 against the groove wall of the guide groove. The guide groove includes a guide section 1 52 and a guide section 2 53. An inclined transition section is arranged between the end of the guide section 2 53 away from the arc plate 51 and the guide section 1 52. When the guide block 71 is located in the guide section 1 52, the distance between the push plate 7 and the center of the drying cylinder 2 is greater than the distance between the push plate 7 and the center of the drying cylinder 2 when the guide block 71 is located in the guide section 2 53. The position of the guide section 2 53 corresponds to the feed port 61. When the guide block 71 moves to the guide section 2 53, the spring 72 pushes the push plate 7 to move toward the center of the drying cylinder 2, which is conducive to quickly pushing the protective slag between two adjacent convex strips 4 into the drying cylinder 2 6.

[0047] like Figures 4 to 8As shown, since the protective slag to be dried contains a certain amount of moisture, after entering the drying cylinder 2, there may be agglomeration in the protective slag. In order to improve the drying efficiency, a crushing assembly is provided between two adjacent convex strips 4 in this embodiment. The crushing assembly includes crushing rods 8 evenly spaced in the left and right directions. The crushing rods 8 are located on the side of the push plate 7 facing the center of the drying cylinder 2, and the crushing rods 8 are fixedly connected to the mounting rods 81 penetrating the push plate 7. The protective slag drying device also includes a driving member that drives the mounting rods 81 to drive the crushing rods 8 to rotate. During the rotation of the drying cylinder 2, the crushing rods 8 and the arc plate 51 do not interfere with each other.

[0048] The driving member includes a gear 1 74, a gear ring 54 and a transmission assembly. One end of the push plate 7 is rotatably connected to a mounting shaft 73, and the mounting shaft 73 is slidably matched with the push plate 7 along its axial direction. The gear 1 74 is fixedly connected to the mounting shaft 73, and the gear ring 54 is arranged on the corresponding end cover 5. The transmission assembly includes a gear 2 75 fixedly connected to the mounting shaft 73, a gear 3 82 fixedly connected to each mounting rod 81, and a toothed belt 84 meshing with the gear 2 75 and the gear 3 82. During the rotation of the drying cylinder 1 2, the gear 1 74 rotates along the gear ring 54, the mounting shaft 73 fixedly connected to the gear 1 74 drives the gear 2 75 to rotate, the gear 2 75 drives the gear 3 82 to rotate through the toothed belt 84, and the gear 3 82 drives the corresponding mounting rod 81 and the crushing rod 8 to rotate. The crushing rod 8 stirs and beats the protective slag between the two convex strips 4 to prevent the protective slag from agglomerating, and at the same time is conducive to the crushing of the agglomerated protective slag. When the push plate 7 moves along the radial direction of the drying cylinder 2, the mounting shaft 73 slides in the guide block 71 of the push plate 7, and will not affect the movement of the push plate 7.

[0049] like Figure 2 , Figure 3 and Figure 7As shown, the stirring device in the drying cylinder 2 6 includes a motor 1 91, a stirring shaft 92 and stirring blades 9. The motor 1 91 is fixedly connected to the drying cylinder 2 6, the stirring shaft 92 is fixedly connected to the output end of the motor 1 91, and the stirring blades 9 are evenly distributed along the circumferential interval of the stirring shaft 92 and are fixedly connected to the stirring shaft 92. A movable plate 93 is hinged at one end of the stirring blade 9 away from the stirring shaft 92, and a torsion spring (not shown in the figure) is arranged at the hinge. When the movable plate 93 is not subjected to external force, it is located in the same plane as the corresponding stirring blade 9. A scraper 63 is arranged at the discharge port 62 of the drying cylinder 2 6. When the stirring blade 9 rotates upward until the movable plate 93 contacts the scraper 63, the scraper 63 scrapes the protective slag on the movable plate 93 close to the wall of the drying cylinder 2 6 into the discharge assembly, and as the stirring blade 9 rotates, the scraper 63 pushes the movable plate 93 to rotate downward to avoid. Since the wall temperature of the drying cylinder 2 6 is relatively high, the protective slag close to the wall of the drying cylinder 2 6 is dried to a better degree. By setting the scraper 63, the protective slag with a better degree of drying can be discharged in time, and the other protective slag continues to remain in the drying cylinder 2 6 for drying, thereby realizing graded drying of the protective slag, making full use of energy and improving the drying effect and efficiency.

[0050] The discharge assembly includes a discharge barrel 10 and an auger structure disposed in the discharge barrel 10. The rotating shaft of the auger structure is fixedly connected to a transmission wheel 101. The output shaft of the motor 191 is fixedly connected to a transmission wheel 2. A transmission belt 102 is connected between the transmission wheel 101 and the transmission wheel 2. The discharge barrel 10 is connected to the discharge port 62. The motor 191 drives the transmission wheel 2 to rotate. The transmission wheel 2 drives the transmission wheel 101 to rotate through the transmission belt 102. The transmission wheel 101 drives the auger structure to rotate, and the auger structure discharges the dried protective slag.

[0051] A method for drying a protective slag of the present invention uses the protective slag drying device of the above embodiment, and the protective slag drying method comprises the following steps:

[0052] Turn on the heating assembly 23 to heat the drying drum 1 2, control the driving assembly to drive the drying drum 1 2 to rotate, and control the stirring device to stir in the drying drum 2 6;

[0053] The protective slag is put into the drying cylinder 2 through the feeding assembly. During the rotation of the drying cylinder 2, the two adjacent convex strips 4 bring the protective slag close to the inner wall of the drying cylinder 2 into between the arc plate 51 and the drying cylinder 2. As the drying cylinder 2 rotates, the convex strips 4 are separated from the arc plate 51, and the push plate 7 pushes the protective slag between the two adjacent convex strips 4 into the drying cylinder 6 for secondary drying.

[0054] The stirring blades 9 and the movable plate 93 in the drying cylinder 2 6 stir the protective slag and drive the protective slag to move toward the discharge port 62. When the movable plate 93 contacts the scraper 63, the scraper 63 scrapes the protective slag on the movable plate 93 close to the wall of the drying cylinder 2 6 into the discharge cylinder 10, and the auger structure in the discharge cylinder 10 discharges the dried protective slag.

[0055] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A protective slag drying device, comprising a base, a drying drum 1 arranged on the base and a driving assembly for driving the drying drum 1 to rotate, a heating assembly is arranged on the periphery of the drying drum 1, and the extension direction of the central axis of the drying drum 1 is defined as the left-right direction, characterized in that: The inner circumference of the drying cylinder 1 is evenly spaced with convex strips extending in the left and right directions. The left and right ends of the drying cylinder 1 are respectively provided with end covers connected to the base, and the end covers are fixedly connected with an arc-shaped plate that fits with the side of the convex strip toward the center of the drying cylinder. The drying cylinder 1 is provided with a drying cylinder 2 fixedly connected to the base. The drying cylinder 2 is provided with a feed inlet and a discharge outlet, and the discharge outlet is connected with a discharge assembly. A stirring device is provided inside the drying cylinder 2. During the rotation of the drying drum 1, when the convex strips come into contact with the arc plate, two adjacent convex strips, the inner wall of the drying drum 1 and the arc plate form a space for storing the protective slag. When the convex strips are out of contact with the arc plate, the protective slag falls into the feed port of the drying drum 2, and after being stirred by the stirring device, it enters the discharge assembly for discharge; A push plate is provided between two adjacent convex strips, and the push plate slides with the convex strips along the radial direction of the drying cylinder. The protective slag drying device also includes a driving structure for driving the push plate to move along the radial direction of the drying cylinder. When the space between the two adjacent convex strips is aligned with the feed port, the driving structure drives the push plate to move toward the center of the drying cylinder. The driving structure includes a spring and guide grooves arranged on two end covers, and the left and right ends of the push plate are respectively fixedly connected with guide blocks extending into the guide grooves, and the spring is connected between the push plate and the inner wall of the drying cylinder 1. The elastic force of the spring squeezes the guide block of the push plate against the groove wall of the guide groove, and the guide groove includes a guide section 1 and a guide section 2. The guide section 2 corresponds to the position of the feed port. When the guide block is located in the guide section 1, the distance between the push plate and the center of the drying cylinder 1 is greater than the distance between the push plate and the center of the drying cylinder 1 when the guide block is located in the guide section 2. A crushing assembly is provided between two adjacent convex strips. The crushing assembly includes crushing rods evenly spaced along the left-right direction. The crushing rods are located on the side of the push plate toward the center of the drying cylinder, and the crushing rods are fixedly connected to a mounting rod that passes through the push plate. The protective slag drying device also includes a driving member that drives the mounting rod to drive the crushing rod to rotate.

2. The protective slag drying device according to claim 1, characterized in that: The driving part includes gear 1, a gear ring and a transmission assembly. One end of the push plate is rotatably connected to a mounting shaft, and the mounting shaft slides with the push plate along its axial direction. Gear 1 is fixedly connected to the mounting shaft, and the gear ring is arranged on the corresponding end cover. The mounting shaft is transmission-connected to each mounting rod through the transmission assembly. During the rotation of the drying cylinder 1, gear 1 rotates along the gear ring, and the mounting shaft fixedly connected to gear 1 drives the mounting rod and the breaking rod to rotate through the transmission assembly.

3. The protective slag drying device according to claim 2, characterized in that: The transmission assembly includes gear 2 fixedly connected to the mounting shaft, gear 3 fixedly connected to each mounting rod, and a toothed belt meshing with gear 2 and gear 3. The mounting shaft drives gear 2 to rotate, gear 2 drives gear 3 to rotate through the toothed belt, and gear 3 drives the corresponding mounting rod and breaking rod to rotate.

4. The protective slag drying device according to claim 1, characterized in that: The stirring device comprises a motor 1, a stirring shaft and stirring blades. The motor 1 is fixedly connected to the drying drum 2, the stirring shaft is fixedly connected to the output end of the motor 1, and the stirring blades are evenly distributed along the circumference of the stirring shaft and are fixedly connected to the stirring shaft.

5. The protective slag drying device according to claim 4, characterized in that: A movable plate is hinged at one end of the stirring blade away from the stirring shaft, and a torsion spring is arranged at the hinge. When the movable plate is not subjected to external force, it is located in the same plane with the corresponding stirring blade. A scraper is arranged at the discharge port of the second drying cylinder. When the stirring blade rotates upward until the movable plate contacts the scraper, the scraper pushes the movable plate to rotate and scrapes the protective slag on the movable plate close to the wall of the second drying cylinder into the discharge assembly.

6. The protective slag drying device according to claim 5, characterized in that: The discharge assembly comprises a discharge barrel and an auger structure arranged in the discharge barrel, and the rotating shaft of the auger structure is connected to the motor through a transmission member.

7. A method for drying mold slag, characterized in that: Using the protective slag drying device described in any one of claims 1 to 6, the protective slag drying method comprises the following steps: Turn on the heating component to heat the drying drum 1, control the driving component to drive the drying drum 1 to rotate, and control the stirring device to stir in the drying drum 2; Put the protective slag into the drying cylinder 1. During the rotation of the drying cylinder 1, the two adjacent convex strips bring the protective slag close to the inner wall of the drying cylinder 1 into between the arc plate and the drying cylinder 1. As the drying cylinder 1 rotates, the protective slag falls into the drying cylinder 2 for secondary drying. The stirring device in the second drying drum stirs the protective slag and then sends it to the discharge assembly for discharge.

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