Anti-caking pellet induration furnace

Abstract

The utility model provides a kind of anti-caking pellet induration furnace, belong to pellet production and processing technical field, including induration machine body, further include: trolley subassembly, trolley subassembly is placed in the inside of induration machine body, trolley subassembly includes the car body being arranged in the inside of induration machine body, the inside top of car body is array distribution with fixed roller, rotating roller is uniformly arranged between mutually close fixed roller;Transmission subassembly, transmission subassembly is placed in the both ends of car body and is used to continuously drive rotating roller rotation;By setting trolley subassembly, when car body receives pellet, pellet is connected in the gap, fixed roller and rotating roller cooperation provide turning basis for pellet, so that car body in the process of driving pellet movement, fixed roller always remains stationary, rotating roller is continuously rotated, and the cooperation of both makes pellet constantly be turned, to avoid the problem that pellet appears uneven heating due to long time stationary adhesion in high-temperature induration stage, it is favorable to improve the heating uniformity of pellet in high-temperature induration process.

Description

Technical Field

[0001] This utility model relates to the field of pellet production and processing technology, and in particular to an anti-caking pellet roasting furnace. Background Technology

[0002] A pellet roasting furnace is a device used to solidify raw iron ore powder into high-strength, metallurgically superior roasted pellets through high-temperature heating. The pellet roasting furnace uses multi-stage temperature control to precisely control the temperature at each stage, avoiding agglomeration problems caused by improper temperature.

[0003] In the process of using a pellet roasting furnace, the feed material and green pellets are first stacked on the top surface of the trolley in sequence. After drying and preheating, they are roasted. Finally, the roasted pellets are cooled and wrought iron balls are output. However, because the pellets are statically stacked on the feed material, the bottom surface of the pellets in contact with the trolley is less heated than the top surface of the feed material that is in direct contact with the hot air. This can easily lead to a larger temperature difference in the pellets, which is not conducive to improving the uniformity of pellet heating.

[0004] Therefore, this application provides an anti-caking pellet roasting furnace to meet the requirements. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and propose an anti-caking pellet roasting furnace.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an anti-caking pellet roasting furnace, comprising a roasting machine body, and further comprising: A trolley assembly is placed inside the roasting machine body. The trolley assembly includes a trolley body disposed inside the roasting machine body. Fixed rollers are arranged in an array on the top inner side of the trolley body, and rotating rollers are arranged between the fixed rollers that are close to each other. A transmission assembly is located at both ends of the vehicle body and is used to continuously drive the rotating roller to rotate. The transmission assembly includes rollers inserted at both ends of the rotating roller. A friction plate is connected to the side of the roasting machine body near the rollers. The rollers are connected to the friction plate in a transmission connection.

[0007] Furthermore, a slide rail is connected between the roasting machine body and the rollers, and a wheel is connected to the side of the vehicle body near the slide rail. The vehicle body is slidably connected to the slide rail through the wheel.

[0008] The beneficial effects of adopting the above-mentioned further solution are: ensuring the stability of the car body during movement, preventing deviation, and supporting the car body located at the bottom of the trolley.

[0009] Furthermore, star wheels are rotatably connected to both ends of the roasting machine body on the side closest to the vehicle body, and a pin is connected to one side of the star wheel on the vehicle body. The vehicle body is connected to the star wheel via the pin.

[0010] The beneficial effect of adopting the above-mentioned further solution is to ensure continuous connection and transportation of multiple car bodies, thereby guaranteeing calcination efficiency.

[0011] Furthermore, both the fixed roller and the rotating roller are connected to side plates, which are arranged in an array along the axial direction on the fixed roller and the rotating roller.

[0012] The beneficial effects of adopting the above-mentioned further solutions are: to avoid the lateral accumulation and displacement of pellets when the rollers rotate or the trolley moves, thereby ensuring that the pellets in each area can be evenly contacted with heat and improving the roasting quality.

[0013] Furthermore, a grate bar is connected to the inner side of the vehicle body near the bottom of the fixed roller and the rotating roller.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the slag and dust generated during the roasting process can fall through the gaps into the slag discharge channel under the trolley, and the gas generated during roasting can also flow smoothly through the gaps.

[0015] Furthermore, the roller is provided with an anti-slip coating on the side near the friction plate.

[0016] The beneficial effects of adopting the above-mentioned further solutions are: to avoid slippage caused by wear of rollers or friction plates under high temperature conditions, and to ensure that the rotating roller rotates continuously and stably.

[0017] Furthermore, a snap-fit ​​block is connected to one end of the roller near the rotating roller, and the roller is snapped into the rotating roller through the snap-fit ​​block.

[0018] The beneficial effect of adopting the above-mentioned further solution is that it enables the roller and the rotating roller to rotate synchronously, thereby ensuring that the roller stably drives the rotating roller to rotate.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. This utility model, by setting up a trolley assembly, when the trolley body receives the pellets, the pellets are engaged in the gap. The fixed roller and the rotating roller cooperate to provide a basis for turning the pellets, so that the fixed roller remains stationary while the trolley body moves the pellets, and the rotating roller continues to rotate. The two work together to make the pellets constantly turn over, thereby avoiding the problem of uneven heating of the pellets due to prolonged static adhesion during the high-temperature roasting stage, which is conducive to improving the heating uniformity of the pellets during the high-temperature roasting process.

[0020] 2. This utility model, by setting up a transmission component, inserts rollers inside the rotating roller. When the rotating roller moves with the vehicle body inside the roasting machine body, the rollers will generate friction with the friction plate, thereby driving the rotating roller to rotate. The kinetic energy generated by the movement of the vehicle body is converted into the rotational power of the rotating roller, thus providing a stable power source for the continuous rotation of the rotating roller. Attached Figure Description

[0021] Figure 1 This is a front view of an anti-caking pellet roasting furnace according to the present invention; Figure 2 This is a structural diagram of the trolley assembly in an anti-caking pellet roasting furnace according to this utility model; Figure 3 This is a structural diagram of a transmission component in an anti-caking pellet roasting furnace according to the present invention; Figure 4 This is a split view of the car body of an anti-caking pellet roasting furnace according to this utility model; Figure 5 This is a split view of the rotating roller in an anti-caking pellet roasting furnace according to the present invention.

[0022] Attached Figure

[0023] 1. The roasting machine body; 2. Cart assembly; 21. Car body; 22. Fixed roller; 23. Rotating roller; 24. Wheel; 25. Slide rail; 26. Star wheel; 27. Pin shaft; 28. Side plate; 29. ​​Grate bar; 3. Transmission components; 31. Rollers; 32. Friction plates; 33. Anti-slip coating; 34. Connecting blocks. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-5As shown, this utility model provides a technical solution: an anti-caking pellet roasting furnace, including a roasting machine body 1. The roasting machine body 1 consists of a frame, a wind box, a blower and an exhaust fan, a combustion chamber and burners, and a control system. The frame supports the entire device and all its components. The wind box is located below the trolley and is divided into multiple independent chambers along the length of the entire machine body. Each chamber corresponds to a process section and is mainly used to guide and distribute airflow. The blower and exhaust fan work together to achieve the circulation of hot and cold air inside. The combustion chamber and burners are located above the roasting section and the soaking section, and are used to provide high-temperature flames and hot flue gas. The control system is used to control the start and stop of each device and component to achieve automation. It also includes: like Figures 1-4 As shown, the trolley assembly 2 is placed inside the roasting machine body 1. The trolley assembly 2 includes a car body 21 disposed inside the roasting machine body 1. Fixed rollers 22 are arranged in an array on the top inner side of the car body 21, and rotating rollers 23 are disposed between the fixed rollers 22 that are close to each other. like Figures 2-4 The transmission assembly 3 shown is located at both ends of the vehicle body 21 and is used to continuously drive the rotating roller 23 to rotate. The transmission assembly 3 includes rollers 31 inserted at both ends of the rotating roller 23. A friction plate 32 is connected to the side of the roasting machine body 1 near the rollers 31. The rollers 31 and the friction plate 32 are connected in a transmission manner. By installing the rotating roller 23 and the fixed roller 22 on the vehicle body 21, and making the gap between the rotating roller 23 and the fixed roller 22 smaller than the diameter of the material, when the vehicle body 21 receives the pellets, the pellets are caught in the gap. At this time, the fixed roller 22 and the rotating roller 23 cooperate with the pellets to provide a bearing and turning base. During the process of the vehicle body 21 driving the pellets to move, the fixed roller 22 remains stationary, while the rotating roller 23 continues to rotate. The rotation, in conjunction with the other two, continuously turns the pellets above, preventing them from remaining stationary and stuck together for extended periods during high-temperature roasting. This solves the problem of statically stacked pellets on the material, where the bottom surface of the pellets in contact with the trolley receives less heat than the top surface of the material layer in direct contact with the hot air, which can easily lead to a greater temperature difference in the pellets. This is beneficial for improving the heating uniformity of the pellets during high-temperature roasting. Furthermore, by inserting rollers 31 inside the rotating roller 23, when the rotating roller 23 moves inside the roasting machine body 1, the rollers 31 drive the rotating roller 23 to rotate through the friction between them and the friction plate 32. This utilizes the kinetic energy of the moving vehicle body 21 to convert into the rotational power of the rotating roller 23, continuously providing power for the rotation of the rotating roller 23.

[0026] Furthermore, such as Figures 3-4As shown, a slide rail 25 connects the roasting machine body 1 and the roller 31. A wheel 24 is connected to the side of the car body 21 near the slide rail 25. The car body 21 is slidably connected to the slide rail 25 through the wheel 24. By welding the slide rail 25 to both sides of the roasting machine body 1 and welding the friction plate 32 to the slide rail 25, when the car body 21 moves, the wheel 24 and the slide rail 25 cooperate to limit the path of one end of the car body 21 and support the movement of the car body 21, thereby ensuring the stability of the car body 21 when moving and preventing deviation. At the same time, it supports the car body 21 located at the bottom of the trolley.

[0027] Furthermore, such as Figures 3-4 As shown, star wheels 26 are rotatably connected to both ends of the roasting machine body 1 near the side of the car body 21. A pin 27 is connected to one side of the star wheel 26 on the car body 21. The car body 21 is connected to the star wheel 26 through the pin 27. By installing the star wheel 26 at both ends of the roasting machine body 1 and connecting the star wheel 26 to the external output shaft, the output end drives the star wheel 26 to rotate. The star wheel 26 drives the car body 21 to slide continuously along the slide rail 25 through the meshing pin 27, ensuring that multiple sets of car bodies 21 are continuously connected and transported, thus ensuring roasting efficiency.

[0028] Furthermore, such as Figure 4 As shown, both the fixed roller 22 and the rotating roller 23 are connected to side plates 28. The side plates 28 are arranged in an array along the axial direction on the fixed roller 22 and the rotating roller 23. By welding the array of side plates 28 to the fixed roller 22 and the rotating roller 23, the side plates 28 are perpendicular to the roller surface, dividing the space above the roller body into multiple independent small areas along the axial direction. The pellets are confined within the area formed by adjacent side plates 28, which prevents the pellets from laterally accumulating or shifting when the roller body rotates or the trolley moves, thereby ensuring that the pellets in each area can be uniformly contacted with heat and improving the roasting quality.

[0029] Furthermore, such as Figure 4 As shown, a grate bar 29 is connected to the inner side of the car body 21 near the bottom of the fixed roller 22 and the rotating roller 23. The grate bar 29 is installed inside the car body 21, and there is a gap between each adjacent grate bar 29. The gap is located at the bottom of the gap between the car body 21 and the fixed roller 22, so that the slag and dust generated during the roasting process can fall through the gap into the slag discharge channel under the trolley. At the same time, the gas generated during roasting can also flow smoothly through the gap.

[0030] Furthermore, such as Figure 5 As shown, an anti-slip coating 33 is provided on the side of the roller 31 near the friction plate 32. By spraying the anti-slip coating 33 onto the roller 31, the anti-slip coating 33 increases the friction between the roller 31 and the friction plate 32, avoiding slippage caused by wear of the roller 31 or the friction plate 32 under high temperature conditions, and ensuring that the rotating roller 23 continues to rotate stably.

[0031] Furthermore, such as Figure 5 As shown, a snap-fit ​​block 34 is connected to one end of the roller 31 near the rotating roller 23. The roller 31 is snapped into the rotating roller 23 through the snap-fit ​​block 34. By welding the snap-fit ​​block 34 onto the roller 31, when the roller 31 is inserted into the rotating roller 23, the roller 31 is snapped into the rotating roller 23 through the snap-fit ​​block 34, thereby achieving synchronous rotation of the roller 31 and the rotating roller 23, thus ensuring that the roller 31 stably drives the rotating roller 23 to rotate.

[0032] Working principle: such as Figures 1-5 As shown, iron powder is granulated into green pellets by a granulator. The green pellets are evenly distributed on a trolley by a feeding system. The trolley body 21 receives the pellets, which slide down the arc surface of the trolley body 21 and the fixed roller 22 into the gap between them. At the same time, the side plates 28 form independent areas on both sides to confine the pellets inside. Then, the output shaft drives the star wheel 26 to rotate. The star wheel 26 pushes the trolley body 21 to move through the meshing with the pin 27. The trolley body 21 moves along the slide rail 25 on the calciner body 1 via wheels 24, causing the pellets to move inside the calciner body 1. The pellets first pass through the blower drying section and... The pellets are dried in the exhaust drying section, then preheated in the preheating section, and finally roasted in the roasting section to heat the raw pellets into mature pellets. During this process, the roller 31 increases the friction between itself and the friction plate 32 through the anti-slip coating 33. The roller 31 rotates along the friction plate 32, causing the roller 31 to drive the rotating roller 23 to rotate on the car body 21. The rotating roller 23 cooperates with the fixed roller 22 to make the pellets tumble, avoiding the pellets from remaining stationary and sticking together for a long time during the high-temperature roasting process, which helps to improve the heating uniformity of the pellets during the high-temperature roasting process.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A calcining furnace for preventing agglomeration of pellets, comprising a calcining machine body (1), characterized in that, Also includes: The trolley assembly (2) is placed inside the roasting machine body (1). The trolley assembly (2) includes a car body (21) located inside the roasting machine body (1). Fixed rollers (22) are arranged in an array on the top inner side of the car body (21), and rotating rollers (23) are arranged between the fixed rollers (22) that are close to each other. The transmission assembly (3) is located at both ends of the vehicle body (21) and is used to continuously drive the rotating roller (23) to rotate. The transmission assembly (3) includes rollers (31) inserted at both ends of the rotating roller (23). A friction plate (32) is connected to the side of the roasting machine body (1) near the roller (31). The roller (31) and the friction plate (32) are connected in a transmission connection.

2. The anti-caking pellet roasting furnace according to claim 1, characterized in that, A slide rail (25) is connected between the roasting machine body (1) and the roller (31). A wheel (24) is connected to the side of the vehicle body (21) near the slide rail (25). The vehicle body (21) is slidably connected to the slide rail (25) through the wheel (24).

3. The anti-caking pellet roasting furnace according to claim 1, characterized in that, Star wheels (26) are rotatably connected to both ends of the roasting machine body (1) on the side near the vehicle body (21). A pin (27) is connected to one side of the star wheel (26) on the vehicle body (21). The vehicle body (21) is connected to the star wheel (26) through the pin (27).

4. The anti-caking pellet roasting furnace according to claim 1, characterized in that, Both the fixed roller (22) and the rotating roller (23) are connected to side plates (28), which are arranged in an array along the axial direction on the fixed roller (22) and the rotating roller (23).

5. The anti-caking pellet roasting furnace according to claim 4, characterized in that, A grate bar (29) is connected to the inner side of the vehicle body (21) near the bottom of the fixed roller (22) and the rotating roller (23).

6. The anti-caking pellet roasting furnace according to claim 1, characterized in that, The roller (31) is provided with an anti-slip coating (33) on the side near the friction plate (32).

7. The anti-caking pellet roasting furnace according to claim 1, characterized in that, A snap-fit ​​block (34) is connected to one end of the roller (31) near the rotating roller (23), and the roller (31) is snapped into the rotating roller (23) through the snap-fit ​​block (34).

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