Electric smelting magnesium-aluminum spinel furnace distributing device

Abstract

The utility model discloses a kind of electric melting magnesium-aluminium spinel furnace distributing devices, including conveying line, the rear upper side of conveying line is equipped with mounting bracket, further including distributing mechanism;Distributing mechanism: it includes fixed rectangular cylinder, mobile slide cylinder, fixed plate, fixed cylinder, slewing bearing, carousel, pivot and material scraping plate, the upper side wall middle part of mounting bracket is fixedly connected to the fixed rectangular cylinder, mobile slide cylinder is movably sleeved in the inside of fixed rectangular cylinder, the lower end of mobile slide cylinder is fixedly connected with fixed plate, the lower end of fixed plate is fixedly connected with fixed cylinder, the lower side of fixed cylinder is rotatably connected with carousel by slewing bearing, the middle rear side of carousel is rotatably connected with pivot, the lower end of pivot is fixedly connected with material scraping plate, this electric melting magnesium-aluminium spinel furnace distributing device, make electric melting magnesium-aluminium spinel raw material evenly distribute in the inside of electric arc furnace, ensure the uniformity when electric melting raw material distributes.

Description

Technical Field

[0001] This utility model relates to the field of fused magnesium aluminum spinel production technology, specifically to a feeding device for an fused magnesium aluminum spinel furnace. Background Technology

[0002] Fused magnesium aluminum spinel is a spinel-like refractory material synthesized by electrofusion method using magnesium oxide and aluminum oxide as the main raw materials. The specific manufacturing method is to mix industrial alumina with a purity ≥98.5% and lightly calcined magnesium oxide with a purity ≥96% in a certain proportion, add an appropriate amount of high-purity magnesite and other ingredients, put it into an electric arc furnace, melt it at a high temperature of about 2200℃, and then control the cooling process to crystallize it into ingots. In the prior art, patent publication number CN215909687U discloses a feeding device for an fused magnesium furnace, including a fixed frame, side plates on both sides of the fixed frame, a top plate fixedly connected to the top of the side plates, an adjusting component inside the top plate, a conveying component on one side of the fixed frame, a first bolt threaded to the inside of the top plate, and a second bolt threaded to the inside of the top plate. The feeding device for an fused magnesium furnace provided by this utility model solves the problem that the material unloaded onto the top of the conveyor belt is often unevenly distributed. The above-mentioned electric fused magnesium furnace feeding device has some problems in actual use. The position of the electric fused magnesium aluminum spinel raw material entering the electric arc furnace cannot be adjusted. These raw materials tend to accumulate on one side of the electric arc furnace and cannot be evenly distributed inside the electric arc furnace. Therefore, we propose an electric fused magnesium aluminum spinel furnace feeding device. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a feeding device for an electrofused magnesium-aluminum spinel furnace, which ensures the uniformity of feeding the electrofused raw material and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a feeding device for an electric fused magnesium-aluminum spinel furnace, comprising a conveyor line, an mounting frame provided on the upper rear side of the conveyor line, and a feeding mechanism; The material feeding mechanism includes a fixed rectangular cylinder, a movable slide cylinder, a fixed plate, a fixed cylinder, a slewing bearing, a turntable, a rotating shaft, and a scraper. The fixed rectangular cylinder is fixedly connected to the middle of the upper side wall of the mounting frame. The movable slide cylinder is movably fitted inside the fixed rectangular cylinder. The lower end of the movable slide cylinder is fixedly connected to a fixed plate. The lower end of the fixed plate is fixedly connected to a fixed cylinder. The lower side of the fixed cylinder is rotatably connected to a turntable via a slewing bearing. The middle and rear side of the turntable is rotatably connected to a rotating shaft. The lower end of the rotating shaft is fixedly connected to a scraper, which ensures that the fused magnesium aluminum spinel raw material is evenly distributed inside the electric arc furnace, thus ensuring the uniformity of the fused raw material feeding.

[0005] Furthermore, a control switch is provided on the right side of the conveyor line. The input end of the control switch is electrically connected to an external power source to control the normal operation of the motor.

[0006] Furthermore, the fabric-making mechanism also includes a transmission component, which includes a gear and a gear ring. The gear is fixedly connected to the upper end of the rotating shaft, and a gear ring is fixedly connected to the middle of the inner arc surface of the fixed cylinder. The gear and the gear ring mesh to achieve the transmission function.

[0007] Furthermore, a motor is fixedly connected to the middle of the lower side wall of the movable slide via a frame, the output shaft of the motor is fixedly connected to the middle of the turntable, and the input end of the motor is electrically connected to the output end of the control switch.

[0008] Furthermore, a cylinder is fixedly connected to the middle of the fixed rectangular cylinder. The telescopic end of the cylinder is fixedly connected to the upper end of the frame. An external air pump is connected to the air inlet of the cylinder to drive the scraper plate to move up and down.

[0009] Furthermore, the lower end of the scraper is provided with evenly distributed notches to reduce the resistance of the scraper and prevent jamming.

[0010] Furthermore, an electric arc furnace is provided at the rear of the conveyor line. The power input terminal of the electric arc furnace is electrically connected to an external power source to realize the function of electro-melting magnesium aluminum spinel raw materials.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This electric fused magnesium-aluminum spinel furnace charging device has the following advantages: The system employs a planetary gear structure in conjunction with an eccentric structure to drive the scraper plate to revolve around the central axis of the turntable within the electric arc furnace. The scraper plate itself also rotates, continuously scraping or moving the fused magnesium-aluminum spinel raw material, ensuring that the fused magnesium-aluminum spinel raw material is evenly distributed inside the electric arc furnace and guaranteeing the uniformity of the fused raw material distribution. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the fabric-making mechanism of this utility model; Figure 3 This is an exploded structural diagram of the fabric-laying mechanism of this utility model; Figure 4 This is a bottom view of the exploded structure of the fabric-making mechanism of this utility model.

[0013] In the diagram: 1. Electric arc furnace, 2. Conveyor line, 3. Mounting frame, 4. Material feeding mechanism, 41. Fixed rectangular cylinder, 42. Moving slide, 43. Fixed plate, 44. Fixed cylinder, 45. Slewing bearing, 46. Turntable, 47. Rotating shaft, 48. Scraper, 49. Transmission assembly, 491. Gear, 492. Gear ring, 5. Motor, 6. Cylinder, 7. Control switch. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-4 This embodiment provides a technical solution: a feeding device for an fused magnesium-aluminum spinel furnace, including a conveyor line 2, with a mounting frame 3 on the upper rear side of the conveyor line 2. The device further includes a feeding mechanism 4, a control switch 7 on the right side of the conveyor line 2, the input of which is electrically connected to an external power source, and an electric arc furnace 1 on the rear side of the conveyor line 2, with its power input connected to an external power source. When the feeding device is needed, the front end of the conveyor line 2 is inserted into the feed inlet of the electric arc furnace 1. At this time, the center of the mounting frame 3 is located inside the upper middle part of the electric arc furnace 1. The external materials for fused magnesium-aluminum spinel, magnesium oxide and alumina, are then fed into the electric arc furnace 1 via the conveyor line 2. It is important to ensure that the alumina, magnesium oxide, and other raw materials are evenly distributed within the furnace, avoiding... To avoid localized accumulation or sparse distribution and ensure uniform heating of the material within the furnace, raw materials of different particle sizes are mixed and distributed. Typically, larger particles are placed at the bottom, smaller particles are used in the middle, and a layer of fine powder is placed at the top. Therefore, the material entering the electric arc furnace 1 first consists of larger particles, which occupy 1 / 3 of the lower chamber of the electric arc furnace 1. Next, some smaller particles are added to the furnace, occupying 1 / 3 of the lower chamber of the electric arc furnace 1. Then, fine powder is added, occupying 1 / 3 of the lower chamber of the electric arc furnace 1. It is important to note that after adding the larger particles, the smaller particles cannot be added directly. After completing the above operations, the conveyor line 2 and the mounting frame 3 need to be removed from the electric arc furnace 1. Then, the electric arc furnace 1 is operated to perform the electrofusion operation on the fused magnesium aluminum spinel raw material. Fabric feeding mechanism 4: It includes a fixed rectangular cylinder 41, a movable slide cylinder 42, a fixed plate 43, a fixed cylinder 44, a slewing bearing 45, a turntable 46, a rotating shaft 47, and a scraper 48. The fixed rectangular cylinder 41 is fixedly connected to the middle of the upper side wall of the mounting frame 3. The movable slide cylinder 42 is movably sleeved inside the fixed rectangular cylinder 41. The lower end of the movable slide cylinder 42 is fixedly connected to the fixed plate 43. The lower end of the fixed plate 43 is fixedly connected to the fixed cylinder 44. The lower side of the fixed cylinder 44 is rotatably connected to the turntable 46 through the slewing bearing 45. The middle and rear side of the turntable 46 is rotatably connected to the rotating shaft 47. The lower end of the rotating shaft 47 is fixedly connected to the scraper 48. The lower end of the scraper 48 has evenly distributed notches. A motor 5 is fixedly connected to the middle of the lower side wall of the movable slide 42 via a frame. The output shaft of the motor 5 is fixedly connected to the middle of the turntable 46. The input end of the motor 5 is electrically connected to the output end of the control switch 7. During operation, the control switch 7 is adjusted, the motor 5 operates, and the output shaft of the motor 5 rotates, causing the turntable 46 to rotate. This, in turn, causes the rotating shaft 47 to rotate clockwise around the central axis of the turntable 46. This, in turn, causes the scraper 48 to rotate counterclockwise around the central axis of the rotating shaft 47 and clockwise around the central axis of the turntable 46. The distance from the rear end of the scraper 48 to the central axis of the rotating shaft 47 is three times the distance from the front end of the scraper 48 to the central axis of the rotating shaft 47. Therefore, the scraper 48 rotates eccentrically and revolves around the turntable 46. During this process, the scraper 48 uses a notch on its lower side to agitate large particles of raw material, distributing them evenly and preventing them from concentrating inside the electric arc furnace 1. The distance between the central axis of the turntable 46 and the central axis of the rotating shaft 47, plus the distance from the rear end to the central axis of the rotating shaft 47, is exactly the diameter of the electric arc furnace 1 (ensuring that the distal end of the scraper 48 moves to the edge of the electric arc furnace 1, ensuring the uniformity of material distribution inside the electric arc furnace 1). The rotation speed of the scraper 48 is greater than that of the turntable 46. As the scraper 48 rotates continuously, large particles of raw material will be evenly distributed inside the electric arc furnace 1. After the feeding of large particles of raw material is completed, the cylinder 6 operates, and the scraper 48 moves upward to the highest point. Then, fine fragments are added into the electric arc furnace 1. Then, the cylinder 6 moves downward. At this time, the extension length of the extension end of the cylinder 6 is 2 / 3 of its total extension length. The scraper 48 extends into the fragments. The above steps are repeated to agitate the fragments, so that some fragments fill the gaps of the large particles of raw material. Then, the above steps are also repeated for the fine fragments to complete the final material distribution operation. The fabric feeding mechanism 4 also includes a transmission assembly 49, which includes a gear 491 and a gear ring 492. The gear 491 is fixedly connected to the upper end of the rotating shaft 47, and the gear ring 492 is fixedly connected to the middle of the inner arc surface of the fixed cylinder 44. The gear 491 and the gear ring 492 are meshed (both the gear 491 and the gear ring 492 are located inside the fixed cylinder 44, and the fixed cylinder 44 is in a sealed state, which can prevent the dust generated by the raw material during the feeding process from contaminating the outer surface of the gear 491 and the gear ring 492 and affecting the transmission efficiency). During the revolution, the gear 491 and the gear ring 492 maintain a meshing relationship, which will drive the rotating shaft 47 to rotate counterclockwise. A cylinder 6 is fixedly connected to the middle of the fixed rectangular cylinder 41. The telescopic end of the cylinder 6 is fixedly connected to the upper end of the frame. An external air pump is connected to the air inlet of the cylinder 6. (During the telescopic period, when the telescopic end of the cylinder 6 pushes the movable slide cylinder 42 to move vertically, the fixed rectangular cylinder 41 and the movable slide cylinder 42 maintain a movable sleeve relationship. Therefore, when the movable slide cylinder 42 moves vertically, it mainly bears vertical load, while the radial load is small and no vibration effect is generated.) When the external air pump is adjusted, the cylinder 6 is operated, and the telescopic end of the cylinder 6 is extended to its longest length, which pushes the movable slide cylinder 42 downward, thereby driving the scraper 48 to move downward. It should be noted that when the conveyor line 2 extends into or out of the electric arc furnace 1, the scraper 48 must be in a longitudinal orientation rather than a transverse orientation. If it is in a transverse orientation, the scraper 48 cannot extend into the interior of the electric arc furnace 1.

[0016] The working principle of the feeding device for an electric arc furnace of fused magnesium-aluminum spinel provided by this utility model is as follows: When the feeding device is needed, the front end of the conveyor line 2 can be inserted into the feed inlet of the electric arc furnace 1. At this time, the center of the mounting frame 3 is located in the upper middle part of the electric arc furnace 1. Then, the materials for making fused magnesium-aluminum spinel, magnesium oxide and alumina, can be conveyed into the electric arc furnace 1 through the conveyor line 2. It is important to ensure that the raw materials such as alumina and magnesium oxide are evenly distributed in the furnace to avoid local accumulation or sparseness, and to ensure that the materials are heated evenly in the furnace. Raw materials of different particle sizes are used for feeding. Generally, larger particles of material can be placed at the bottom, smaller particles of crushed material can be placed in the middle, and a layer of material can be placed at the top. Since the material entering the electric arc furnace 1 is initially larger particles, these larger particles occupy about one-third of the lower chamber. Next, smaller fragments are added, also occupying about one-third of the lower chamber. Then, fine powder is added, again occupying about one-third of the lower chamber. It's important to note that after adding the larger particles, the smaller fragments cannot be added directly. At this point, the external air pump and cylinder 6 are activated, extending their telescopic ends to their maximum length, pushing the sliding cylinder 42 downwards. This, in turn, moves the scraper 48 downwards. During this process, the control switch 7 is activated, and the motor 5 operates. The output shaft of the motor 5 rotates, causing the turntable 46 to rotate. The rotating shaft 47 revolves clockwise around the central axis of the turntable 46. During this revolution, gear 491 and gear ring 492 remain meshed, causing the rotating shaft 47 to rotate counterclockwise. This, in turn, causes the scraper plate 48 to rotate counterclockwise around the central axis of the rotating shaft 47 and clockwise around the central axis of the turntable 46. The distance from the rear end of the scraper plate 48 to the central axis of the rotating shaft 47 is three times the distance from the front end of the scraper plate 48 to the central axis of the rotating shaft 47. Therefore, the scraper plate 48 rotates eccentrically around the turntable 46. During this revolution, large particles of raw material are evenly distributed through the notch on the lower side of the scraper plate 48, preventing them from concentrating in the electric arc furnace 1. The distance between the central axis of the turntable 46 and the central axis of the rotating shaft 47, plus the distance from the rear end to the central axis of the rotating shaft 47, is exactly the diameter of the electric arc furnace 1. The rotation speed of the scraper plate 48 is greater than that of the turntable 46. As the scraper plate 48 rotates continuously, large particles of raw material are evenly spread inside the electric arc furnace 1. After feeding the large particles of raw material, the cylinder 6 operates, and the scraper plate 48 moves upward to its highest position, then adds fine fragments into the electric arc furnace 1. Then, the cylinder 6 moves downward, at which point the extension length of the cylinder 6's telescopic end is 2 / 3 of its total extension length. The scraper plate 48 extends into the fragments, and the above steps are repeated to agitate the fragments, causing some of the fragments to fill the gaps in the large particles of raw material.Then, repeat the above steps for smaller fragments to complete the final material feeding operation. After completing the above operations, conveyor line 2 and mounting frame 3 need to be removed from electric arc furnace 1. Then, operate electric arc furnace 1 to perform electrofusion of the fused magnesium aluminum spinel raw material.

[0017] It is worth noting that the electric arc furnace 1, conveyor line 2, motor 5 and cylinder 6 disclosed in the above embodiments can be freely configured according to the actual application scenario. The electric arc furnace 1 is selected according to the actual working conditions. It is recommended to use a mining telescopic belt conveyor for the conveyor line 2. It is recommended to use an HL series high-efficiency high-torque direct drive motor for the motor 5. It is recommended to use an SC series standard cylinder for the cylinder 6. The control switch 7 is equipped with a control button corresponding to the motor 5 and used to control its switch.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A feeding device for an electrofused magnesium-aluminum spinel furnace, comprising a conveyor line (2), wherein a mounting frame (3) is provided on the upper rear side of the conveyor line (2), characterized in that: It also includes the fabric mechanism (4); Fabric feeding mechanism (4): It includes a fixed rectangular tube (41), a movable slide tube (42), a fixed plate (43), a fixed tube (44), a slewing bearing (45), a turntable (46), a rotating shaft (47), and a scraper (48). The fixed rectangular tube (41) is fixedly connected to the middle of the upper side wall of the mounting frame (3). The movable slide tube (42) is movably sleeved inside the fixed rectangular tube (41). The lower end of the movable slide tube (42) is fixedly connected to the fixed plate (43). The lower end of the fixed plate (43) is fixedly connected to the fixed tube (44). The lower side of the fixed tube (44) is rotatably connected to the turntable (46) through the slewing bearing (45). The middle and rear side of the turntable (46) is rotatably connected to the rotating shaft (47). The lower end of the rotating shaft (47) is fixedly connected to the scraper (48).

2. The feeding device for an electrofused magnesium-aluminum spinel furnace according to claim 1, characterized in that: A control switch (7) is provided on the right side of the conveyor line (2), and the input end of the control switch (7) is electrically connected to an external power source.

3. The feeding device for an electrofused magnesium-aluminum spinel furnace according to claim 1, characterized in that: The fabric mechanism (4) also includes a transmission assembly (49), which includes a gear (491) and a gear ring (492). The gear (491) is fixedly connected to the upper end of the rotating shaft (47), and the gear ring (492) is fixedly connected to the middle of the inner arc surface of the fixed cylinder (44). The gear (491) and the gear ring (492) are meshed together.

4. The feeding device for an electrofused magnesium-aluminum spinel furnace according to claim 2, characterized in that: The lower side wall of the movable slide (42) is fixedly connected to a motor (5) via a frame. The output shaft of the motor (5) is fixedly connected to the middle of the turntable (46). The input end of the motor (5) is electrically connected to the output end of the control switch (7).

5. The feeding device for an electrofused magnesium-aluminum spinel furnace according to claim 4, characterized in that: A cylinder (6) is fixedly connected to the middle of the fixed rectangular tube (41). The telescopic end of the cylinder (6) is fixedly connected to the upper end of the frame. An external air pump is connected to the air inlet of the cylinder (6).

6. The feeding device for an electrofused magnesium-aluminum spinel furnace according to claim 1, characterized in that: The scraper (48) has evenly distributed notches at its lower end.

7. The feeding device for an electrofused magnesium-aluminum spinel furnace according to claim 1, characterized in that: An electric arc furnace (1) is provided on the rear side of the conveyor line (2), and the power input terminal of the electric arc furnace (1) is electrically connected to an external power source.

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