Efficient roasting device for preparing iron oxide red

Abstract

An efficient roasting device for preparing iron oxide red relates to the technical field of roasting, and is characterized in that a first smoke exhaust pipe is fixedly arranged on a heating inner cylinder, a second smoke exhaust pipe is fixedly arranged on a heat insulation shell in a penetrating manner and is connected with external waste gas treatment equipment, and a feeding hopper is fixedly arranged at the upper part of the heating inner cylinder; the feeding hopper is fixedly arranged on the top wall of the heat insulation shell in a penetrating mode, the spiral heat conduction pipe is located in the heat insulation shell and arranged on the outer side of the heating inner cylinder in a sleeving mode, and the two ends of the spiral heat conduction pipe are connected with the first smoke exhaust pipe and the second smoke exhaust pipe correspondingly. A rotating plate is rotationally connected into an opening in the top wall of the heating inner barrel through a bearing, a stirring frame is fixedly arranged at the lower end of a vertical rod, and a stirring and mixing mechanism is arranged on the rotating plate, so that waste gas heat can be utilized, the temperature difference between the interior of the inner barrel and the environment where the inner barrel is located is reduced, and roasting temperature loss is reduced; and the raw materials can be fully stirred and mixed in a large range and turned up and down, so that roasting is more efficient.

Description

Technical Field

[0001] This utility model relates to the field of roasting technology, specifically to a high-efficiency roasting device for preparing iron oxide red. Background Technology

[0002] Iron oxide red is pure iron oxide with excellent lightfastness, high-temperature resistance, and resistance to atmospheric effects, polluted gases, and all alkalis. It is mainly used for coloring paints, rubber, plastics, and construction materials. The preparation of iron oxide red requires the use of a calcining furnace or other calcining equipment. Existing calcining furnaces have a large temperature difference between their internal temperature and the ambient temperature, which easily leads to heat loss through the side walls. Moreover, the stirring components in the calcining furnace generally use rotation to agitate the raw materials, which cannot achieve vertical material turning. This results in poor heating of some raw materials located in the lower part of the calcining furnace that are difficult to agitate. Therefore, there is an urgent need for a high-efficiency calcining device for the preparation of iron oxide red. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a rationally designed, high-efficiency calcination apparatus for the preparation of iron oxide red, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a heating inner cylinder and a heat-insulating outer shell, wherein the heating inner cylinder is fixedly disposed inside the heat-insulating outer shell;

[0005] It also includes:

[0006] The first exhaust pipe is fixedly installed on the heating inner cylinder, and the second exhaust pipe is fixedly installed on the heat insulation shell. The second exhaust pipe is connected to the external exhaust gas treatment equipment. A feed hopper is fixedly installed on the upper part of the heating inner cylinder and is fixedly installed on the top wall of the heat insulation shell.

[0007] A spiral heat-conducting pipe is located inside the heat-insulating shell and is sleeved on the outside of the heating inner cylinder. The two ends of the spiral heat-conducting pipe are connected to the No. 1 exhaust pipe and the No. 2 exhaust pipe, respectively.

[0008] The motor is fixedly mounted on the upper part of the heat insulation shell. A rotating plate is rotatably connected to the top wall opening of the heating inner cylinder via a bearing. The rotating plate is equipped with a lifting drive mechanism connected to the motor. A vertical rod connected to the lifting drive mechanism is provided inside the heating inner cylinder. A stirring frame is fixedly mounted at the lower end of the vertical rod. A mixing mechanism is provided on the rotating plate.

[0009] Furthermore, the lifting drive mechanism includes:

[0010] A rotating cylinder is movably mounted on a rotating plate, and the upper end of a vertical rod is fixedly connected to the rotating cylinder.

[0011] The drive rod is fixedly mounted on the output shaft of the motor and is movably inserted into the rotating cylinder. Fixing blocks are fixedly mounted on both sides of the top wall of the heat insulation shell. Guide blocks are fixedly mounted on the side walls of the fixing blocks and are movably mounted in the reciprocating guide groove opened on the outer ring wall of the rotating cylinder.

[0012] Furthermore, a limiting plate is fixedly provided at the lower end of the drive rod, and the limiting plate is movably disposed inside the rotating cylinder.

[0013] Furthermore, the mixing mechanism includes:

[0014] An internal gear ring is fixedly mounted on the upper part of a rotating plate. Two rotating shafts are rotatably mounted on the rotating plate via sealed bearings. Gears that mesh with the internal gear ring are fixedly sleeved on the upper ends of the rotating shafts.

[0015] A rotating frame is fixedly installed at the lower end of a rotating shaft, and several mixing plates are fixedly installed at the bottom of the rotating frame.

[0016] Furthermore, several support rods are fixedly installed inside the heat insulation shell, and one end of each support rod is fixedly connected to the heating inner cylinder.

[0017] Furthermore, a closed shell is fixedly installed at the bottom of the rotating plate, and the vertical rod is movably inserted through the closed shell via a linear sealed bearing.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the high-efficiency roasting device for preparing iron oxide red described in this utility model can not only realize the utilization of waste gas heat, reduce the temperature difference between the inner cylinder and the surrounding environment, and reduce the loss of roasting temperature, but also fully mix the raw materials over a large area and turn them over, making the roasting more efficient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a cross-sectional view of the heat insulation shell in this utility model.

[0021] Figure 3 This is an exploded view of the rotating plate, lifting drive mechanism, vertical rod, stirring frame, mixing mechanism and enclosed shell in this utility model.

[0022] Figure 4 yes Figure 3 Enlarged view of part A in the image.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Heating inner cylinder; 2. Insulated outer shell; 3. No. 1 exhaust pipe; 4. No. 2 exhaust pipe; 5. Feed hopper; 6. Spiral heat conduction pipe; 7. Motor; 8. Rotating plate; 9. Lifting drive mechanism; 9. Rotating cylinder; 9-1. Drive rod; 9-2. Fixing block; 9-3. Guide block; 9-4. Vertical rod; 10. Stirring frame; 11. Mixing mechanism; 12. Internal gear ring; 12-1. Rotating shaft; 12-2. Gear; 12-3. Rotating frame; 12-4. Mixing plate; 12-5. Reciprocating guide groove; 13. Limiting plate; 14. Support rod; 15. Enclosed shell; 16. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figures 1-4 As shown, this specific embodiment adopts the following technical solution: it includes a heating inner cylinder 1 and a heat insulation outer shell 2. The heating inner cylinder 1 is fixedly installed inside the heat insulation outer shell 2. Several support rods 15 are fixedly installed inside the heat insulation outer shell 2. One end of the support rod 15 is fixedly connected to the heating inner cylinder 1. The support rod 15 can provide auxiliary support for the heating inner cylinder 1 inside the heat insulation outer shell 2, thereby improving the stability of the heating inner cylinder 1.

[0027] It also includes:

[0028] The first exhaust pipe 3 is fixedly installed on the heating inner cylinder 1. The second exhaust pipe 4 is fixedly installed on the heat insulation shell 2. The second exhaust pipe 4 is connected to the external exhaust gas treatment equipment. The upper part of the heating inner cylinder 1 is fixedly installed with a feed hopper 5, and the feed hopper 5 is fixedly installed on the top wall of the heat insulation shell 2.

[0029] The spiral heat-conducting pipe 6 is located inside the heat insulation shell 2 and is sleeved on the outside of the heating inner cylinder 1. The two ends of the spiral heat-conducting pipe 6 are respectively connected to the first exhaust pipe 3 and the second exhaust pipe 4.

[0030] The motor 7 is fixedly installed on the upper part of the heat insulation shell 2. A rotating plate 8 is rotatably connected to the top wall opening of the heating inner cylinder 1 through a bearing. The rotating plate 8 is provided with a lifting drive mechanism 9 connected to the motor 7. The heating inner cylinder 1 is provided with a vertical rod 10 connected to the lifting drive mechanism 9. A stirring frame 11 is fixedly installed at the lower end of the vertical rod 10. A mixing mechanism 12 is provided on the rotating plate 8.

[0031] The lifting drive mechanism 9 includes:

[0032] Rotating cylinder 9-1 is movably mounted on rotating plate 8. The upper end of vertical rod 10 is fixedly connected to rotating cylinder 9-1. A closed shell 16 is fixedly installed at the bottom of rotating plate 8. Vertical rod 10 is movably mounted on closed shell 16 through linear sealing bearing. Closed shell 16 is used to ensure the sealing of heating inner cylinder 1 and prevent the temperature inside heating inner cylinder 1 from being lost due to gaps between rotating cylinder 9-1 and rotating plate 8.

[0033] A drive rod 9-2 is fixedly mounted on the output shaft of the motor 7 and movably inserted into the rotating cylinder 9-1. Fixing blocks 9-3 are fixedly mounted on both sides of the top wall of the heat insulation shell 2. Guide blocks 9-4 are fixedly mounted on the side walls of the fixing blocks 9-3 and movably mounted in the reciprocating guide groove 13 opened on the outer ring wall of the rotating cylinder 9-1. When the motor 7 drives the vertical rod 10 and the stirring frame to rotate via the drive rod 9-2 and the rotating cylinder 9-1, it heats the oxygen in the inner cylinder 1. When the iron oxide red is stirred, the guide block 9-4 will circulate in the reciprocating guide groove 13, so that the rotating cylinder 9-1, the vertical rod 10 and the stirring frame move up and down, realizing the turning of the iron oxide red in the lower part of the heating inner cylinder 1, improving the roasting effect. The lower end of the drive rod 9-2 is fixedly provided with a limit plate 14, and the limit plate 14 is movably set in the rotating cylinder 9-1. The limit plate 14 can provide restriction when the rotating cylinder 9-1 is in the lowest extreme position, so as to prevent the rotating cylinder 9-1 from detaching from the drive rod 9-2.

[0034] The mixing mechanism 12 includes:

[0035] An internal gear ring 12-1 is fixedly mounted on the upper part of a rotating plate 8. Two rotating shafts 12-2 are rotatably mounted on the rotating plate 8 through sealed bearings. A gear 12-3 that meshes with the internal gear ring 12-1 is fixedly sleeved on the upper end of the rotating shaft 12-2.

[0036] The rotating frame 12-4 is fixedly installed at the lower end of the rotating shaft 12-2. Several stirring plates 12-5 are fixedly installed at the bottom of the rotating frame 12-4. When the rotating plates 8 rotate, not only can the rotating shaft 12-2 revolve within the heating inner cylinder 1, but it can also rotate on its own axis by the cooperation of the internal gear ring 12-1 and the gear 12-3, so that the rotating frame 12-4 can drive the stirring plates 12-5 to achieve a large-scale stirring within the heating inner cylinder 1.

[0037] When using this invention, the raw materials are poured into the heating inner cylinder 1 through the feed hopper 5. The heating inner cylinder 1 then heats and roasts the raw materials inside. The exhaust gas generated during the roasting process enters the spiral heat-conducting pipe 6 through the first exhaust pipe 3. At this time, the heat contained in the exhaust gas is conducted to the heat-insulating outer shell 2, which not only realizes the utilization of the heat of the exhaust gas, but also ensures that the heating inner cylinder 1 is in a good temperature environment, avoiding the large temperature difference between the inside and outside of the heating inner cylinder 1, which would lead to the temperature loss of the heating inner cylinder 1. Subsequently, the exhaust gas can be discharged to the external exhaust gas treatment device through the second exhaust pipe 4. During the roasting process, the motor 7 can also be started. The motor 7 drives the drive rod 9-2 to rotate, the drive rod 9-2 drives the rotating cylinder 9-1 to rotate, the rotating cylinder 9-1 drives the vertical rod 10 to rotate, and the vertical rod 10 drives the agitator. The rotating frame 11 agitates the raw materials inside the heating inner cylinder 1. Simultaneously, the guide block 9-4 moves cyclically within the reciprocating guide groove 13, causing the rotating cylinder 9-1 to drive the vertical rod 10 and the agitating frame 11 to move up and down during rotation. This allows for the up-and-down turning of the raw materials at the bottom of the heating inner cylinder 1. The rotating cylinder 9-1 also drives the rotating plate 8 to rotate, causing the rotating shaft 12-2 to drive the rotating frame 12-4 and the mixing plate 12-5 to revolve within the heating inner cylinder 1. The meshing of the internal gear ring 12-1 and the gear 12-3 enables the rotating shaft 12-2 to rotate on its own axis. The rotating shaft 12-2 drives the mixing plate 12-5 to rotate through the rotating frame 12-4, achieving a wide-range agitation of the raw materials inside the heating inner cylinder 1, thereby achieving efficient roasting.

[0038] Compared with the prior art, the beneficial effects of this utility model are:

[0039] By combining the No. 1 exhaust pipe 3, the No. 2 exhaust pipe 4 and the spiral heat conduction pipe 6, the heat of the exhaust gas can be utilized, so that the heating inner cylinder 1 can be in a good temperature environment, and the large temperature difference between the inside and outside of the heating inner cylinder 1 can be avoided, which would lead to the loss of temperature of the heating inner cylinder 1.

[0040] With the cooperation of the lifting drive mechanism 9, the guide block 9-4 can move in the reciprocating guide groove 13, so that the rotating cylinder 9-1, the vertical rod 10 and the stirring frame 11 can move up and down in sync during the rotation, so as to turn the raw material in the lower part of the heating inner cylinder 1 up and down, and avoid the accumulation of raw material, which would lead to poor roasting effect.

[0041] With the cooperation of the mixing mechanism 12, the rotation of the mixing plate 12-5 inside the heating inner cylinder 1 can achieve large-scale mixing of the raw materials inside the heating inner cylinder 1, making the roasting of the raw materials more efficient.

[0042] With the cooperation of the support rod 15, auxiliary support can be provided for the heating inner cylinder 1, thereby improving the stability of the heating inner cylinder 1 within the heat insulation shell 2.

[0043] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency calcination apparatus for preparing iron oxide red, comprising a heating inner cylinder (1) and a heat-insulating outer shell (2), wherein the heating inner cylinder (1) is fixedly disposed inside the heat-insulating outer shell (2), and the heating inner cylinder (1) heats and calcines the raw materials inside; characterized in that It also includes: The first exhaust pipe (3) is fixedly installed on the heating inner cylinder (1), and the second exhaust pipe (4) is fixedly installed on the heat insulation shell (2). The second exhaust pipe (4) is connected to the external waste gas treatment equipment. The upper part of the heating inner cylinder (1) is fixedly installed with a feed hopper (5), and the feed hopper (5) is fixedly installed on the top wall of the heat insulation shell (2). Spiral heat pipe (6), the spiral heat pipe (6) is located inside the heat insulation shell (2), and the spiral heat pipe (6) is sleeved on the outside of the heating inner cylinder (1). The two ends of the spiral heat pipe (6) are connected to the first exhaust pipe (3) and the second exhaust pipe (4) respectively. The motor (7) is fixedly installed on the upper part of the heat insulation shell (2). A rotating plate (8) is rotatably connected to the top wall opening of the heating inner cylinder (1) through a bearing. A lifting drive mechanism (9) connected to the motor (7) is provided on the rotating plate (8). A vertical rod (10) connected to the lifting drive mechanism (9) is provided inside the heating inner cylinder (1). A stirring frame (11) is fixedly installed at the lower end of the vertical rod (10). A mixing mechanism (12) is provided on the rotating plate (8).

2. The efficient calcining device for preparing iron oxide red according to claim 1, characterized in that: The lifting drive mechanism (9) includes: Rotating cylinder (9-1), which is movably mounted on rotating plate (8), and the upper end of vertical rod (10) is fixedly connected to rotating cylinder (9-1); The drive rod (9-2) is fixedly mounted on the output shaft of the motor (7) and is movably inserted into the rotating cylinder (9-1). Fixing blocks (9-3) are fixedly mounted on both the left and right sides of the inner top wall of the heat insulation shell (2). Guide blocks (9-4) are fixedly mounted on the side wall of the fixing blocks (9-3). The guide blocks (9-4) are movably mounted in the reciprocating guide groove (13) opened on the outer ring wall of the rotating cylinder (9-1).

3. The efficient calcining device for preparing iron oxide red according to claim 2, characterized in that: The lower end of the drive rod (9-2) is fixedly provided with a limiting plate (14), and the limiting plate (14) is movably disposed inside the rotating cylinder (9-1).

4. The efficient calcining device for preparing iron oxide red according to claim 1, characterized in that: The mixing mechanism (12) includes: An internal gear ring (12-1) is fixedly mounted on the upper part of a rotating plate (8). Two rotating shafts (12-2) are rotatably mounted on the rotating plate (8) through a sealed bearing. A gear (12-3) that meshes with the internal gear ring (12-1) is fixedly mounted on the upper end of the rotating shaft (12-2). A rotating frame (12-4) is fixedly installed at the lower end of the rotating shaft (12-2), and several mixing plates (12-5) are fixedly installed at the bottom of the rotating frame (12-4).

5. The efficient calcining device for preparing iron oxide red according to claim 1, characterized in that: Several support rods (15) are fixedly installed inside the heat insulation shell (2), and one end of the support rod (15) is fixedly connected to the heating inner cylinder (1).

6. The efficient calcining device for preparing iron oxide red according to claim 1, characterized in that: The rotating plate (8) is fixedly provided with a closed shell (16) at the bottom, and the vertical rod (10) is movably arranged on the closed shell (16) through a linear sealing bearing.

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