White corundum electric frit quality sorting device

Abstract

The utility model belongs to the field of white corundum production and application equipment, and particularly relates to a white corundum electric frit quality sorting device. Comprising a frit bin and a plate chain conveying belt arranged below the frit bin, color sorting recognition equipment is arranged on the plate chain conveying belt, a material shifting device is arranged behind the color sorting recognition equipment, the frit bin comprises a bin body and material guiding plates arranged at the bottom of the bin body, and the material guiding plates are obliquely arranged up and down. According to the frit bin, the structure of an existing frit bin is improved, the front end plate is vertically arranged, the rear end plate is obliquely arranged, blanking is convenient, the expansion notch and the sealing door are arranged, the sealing door is arranged on the front end plate, the sealing door is arranged on the rear end plate, and the sealing door is arranged on the sealing door. The temporary expansion of the discharge port is realized, so that the discharge requirement is met, and meanwhile, the arrangement of multiple channels is realized through the arrangement of the isolation columns, so that the sorting speed is improved, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to white corundum production application equipment field, especially relate to a white corundum fused block quality sorting device. BACKGROUND

[0002] White corundum is white fused block that is made of industrial alumina powder as raw material, melted in electric arc furnace and then recrystallized after cooling, and its main chemical component is Al2O3, with content above 99%, and impurity content is very small. The smelting process of white corundum is basically the process of melting and recrystallization of industrial alumina powder, and there is no reduction process. Industrial alumina contains Al2O3 above 98.5%, a small amount of Na2O, SiO2 and trace amount of Fe2O3 and other impurities. Although the electric melting process has certain purification effect, it cannot completely eliminate the impurities. Na2O and Al2O3 generate β-Al2O3 (Na2O·11Al2O3) in the molten state, and the generation amount increases with the increase of Na2O content. Because the melting point of β-Al2O3 is low and the density is small, when the fused block is cooled and crystallized, it is segregated in the upper and middle parts of the fused block, and although it can be removed through crushing and sorting, a small amount of it still remains in the corundum melt, which seriously affects the refractory performance of white corundum fused block. Therefore, the content of Na2O in industrial alumina must be strictly controlled. In order to eliminate or weaken the harmfulness of Na2O, quartz sand or aluminum fluoride (AlF3) is added. The former makes β-Al2O3 become nepheline, and the latter promotes the volatilization of Na2O. The temperature of white corundum is generally 2100℃, and the smelting time is generally 4 hours. The molten liquid after electric melting is poured into a receiving package, and after cooling, it becomes a large mushroom-shaped fused block with a diameter of 3m and a height of 0.7m. After the first crushing, the fused block is irregularly shaped with a size of 250mm*250mm*250mm, and then it is put into a crusher for secondary and tertiary crushing.

[0003] Due to the constraints of raw material purity and asynchronous cooling, the fused block after electric melting has certain defects. First, there is black β-Al2O3 in the upper and middle parts of the fused block, and second, the edge crystalline organization density is slightly lower than that of the middle part. Black β-Al2O3 must be removed through sorting, otherwise it will affect the refractory performance of white corundum fused block. The fused block with lower density also needs to be sorted out. The price of fused block with different densities is different, and the price of fused block with higher density is higher. At present, the sorting of white corundum fused block is entirely relied on experienced workers, and different quality fused blocks are put into different hoppers through sorting, which is time-consuming and labor-intensive, and the production efficiency is low.

[0004] With the entry of scientific society, the application of high-speed industrial camera is realized, and color selection is realized, which provides help for the screening of white corundum blocks. For example, a white corundum electric block quality sorting device disclosed by the State Intellectual Property Office (Patent No. CN201821921325.3) includes a workbench, a block bin, a plate chain conveyor, a flow limiting device, and a material stirring device. Corundum blocks fall from the discharge port of the block bin onto the plate chain conveyor, and the flow limiting device uniformly distributes the blocks to the plate chain conveyor. The material stirring device stirs the blocks of different qualities into the classified bins. The discharge port of the block bin is connected with a slide, and the slide is provided with a vibrator. The material stirring device is arranged above the plate chain conveyor and includes a first swing mechanism and a stirring plate. The workbench is provided with a controller, which controls the swing mechanism to drive the stirring plate to swing.

[0005] Although the above structure can realize the quality sorting of white corundum electric blocks, the sizes of the white corundum electric blocks are different and there are many edges and corners. Therefore, it is difficult to move the white corundum electric blocks one by one, which may cause the outlet to be blocked and the entire device to stop. Utility model content

[0006] The utility model provides a white corundum electric block quality sorting device which is reasonable in design, simple in structure, convenient to process, can effectively avoid blockage, and is convenient to sort.

[0007] In order to achieve the above purpose, the utility model adopts the technical scheme that a white corundum electric block quality sorting device is provided, which includes a block bin and a plate chain conveyor arranged below the block bin. A color selection identification device is arranged on the plate chain conveyor. A material stirring device is arranged behind the color selection identification device. The block bin includes a bin body and a guide plate arranged at the bottom of the bin body. The guide plate is arranged obliquely. One end of the guide plate away from the bin body is arranged above the plate chain conveyor. A guide groove is arranged on the guide plate. The bin body includes a front end plate, a rear end plate, and side plates arranged on both sides of the front end plate and the rear end plate. The front end plate is arranged vertically. The rear end plate is arranged obliquely and horizontally with the guide plate. The top of the front end plate, the rear end plate, and the side plates encloses an inlet of the bin body. The bottom of the front end plate, the rear end plate, and the side plates encloses a discharge port of the bin body. The discharge port is above the guide groove. An expansion gap is arranged at the bottom of the front end plate. A door is arranged on the expansion gap to close the expansion gap. The top of the door is hingedly connected with the front end plate. A turnover cylinder is arranged on the side plate to turn over the door.

[0008] Preferably, a partition column is arranged between the front end plate and the rear end plate, the partition column is arranged between the front end plate and the rear end plate in a spaced manner, and the partition column divides the discharging port into a plurality of discharging ports.

[0009] Preferably, the top of the partition column is arranged in a sharp angle.

[0010] Compared with the prior art, the white corundum fused block quality sorting device has the advantages and positive effects that:

[0011] 1. The white corundum fused block quality sorting device is improved on the basis of the structure of the existing fused block bin, the vertical arrangement of the front end plate and the inclined arrangement of the rear end plate facilitate material falling, the expansion gap and the door are arranged to temporarily expand the discharging port, thereby meeting the requirement of discharging, and the partition column is arranged to realize the arrangement of multiple channels, thereby improving the sorting speed and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0013] Fig. 1 A structure schematic view of the white corundum fused block quality sorting device provided for the embodiment 1 is shown in the figure.

[0014] Fig. 2 A structure schematic view of the fused block bin provided for the embodiment 1 is shown in the figure.

[0015] Fig. 3 A top view of the fused block bin provided for the embodiment 1 is shown in the figure.

[0016] Fig. 4 A structure schematic view of the bin body provided for the embodiment 1 is shown in the figure.

[0017] In the above figures, 1, fused block bin; 11, bin body; 111, front end plate; 112, side plate; 113, rear end plate; 114, feeding port; 115, discharging port; 116, expansion gap; 17, partition column; 12, guide plate; 121, guide groove; 13, door; 14, overturning cylinder; 2, plate chain conveyor; 3, color sorting identification device; 4, material stirring device; 5, material collecting barrel. DETAILED DESCRIPTION

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figs. 1-4 As shown, this embodiment aims to solve the problems of clogging and efficiency encountered in the sorting of white fused alumina. To this end, the white fused alumina electric fused alumina ingot quality sorting device provided in this embodiment includes an ingot hopper 1 and a plate chain conveyor belt 2 set below the ingot hopper 1. A color sorting and identification device 3 is set on the plate chain conveyor belt 2, and a material feeding device 4 is set behind the color sorting and identification device 3. Here, "behind" refers to the movement direction of the plate chain conveyor belt 2, that is, moving backward.

[0021] The above structure is a common structure of existing sorting equipment, and therefore will not be described in detail in this embodiment. Considering that clogging can be reduced in two ways, one is to adjust the falling to prevent the white fused alumina blocks from getting stuck together, and the other is to appropriately adjust the size of the discharge port to allow it to fall smoothly, in order to achieve the above objectives, the fused alumina hopper 1 provided in this embodiment includes a hopper body 11 and a guide plate 12 disposed at the bottom of the hopper body 11. The guide plate 12 is inclined and positioned vertically, with one end of the guide plate 12 away from the hopper body 11 positioned above the plate chain conveyor belt 2. In order to prevent the sliding direction on the lower guide plate 12 of the fused alumina blocks from deviating, in this embodiment, a guide groove 121 is provided on the guide plate 12.

[0022] To regulate the descent, in this embodiment, the chamber 11 includes a front plate 111, a rear plate 113, and side plates 112 disposed on both sides of the front plate 111 and the rear plate 113. The front plate 111 is vertically positioned, while the rear plate 113 is inclined and horizontally aligned with the guide plate 12. This allows for staggered descent relative to vertical descent, reducing the likelihood of jamming. Furthermore, the horizontal alignment between the rear plate 113 and the guide plate 12 further facilitates the sliding of the molten metal, further reducing the occurrence of jamming.

[0023] In this way, the top of the front end plate 111, the rear end plate 113 and the side plate 112 enclose the feed inlet 114 of the bin 11, and the bottom of the front end plate 111, the rear end plate 113 and the side plate 112 enclose the discharge outlet 115 of the bin 11, which is above the guide chute 121.

[0024] Considering that the discharge outlet is the most likely place to be blocked, therefore, an expansion gap 116 is arranged at the bottom of the front end plate 111, and a closure door 13 for closing the expansion gap 116 is arranged on the expansion gap 116, the top of the closure door 13 is hingedly arranged on the front end plate 111, and a turnover cylinder 14 for turning over the closure door 13 is arranged on the side plate 112. In this way, during normal discharging, the closure door 13 is in a state of closing the expansion gap 116, and when blocked, the turnover cylinder 14 is opened, the area of the discharge outlet is increased, thereby solving the problem of blockage.

[0025] Considering that white corundum belongs to abrasive and consumable, and its yield is large, relying on individual detection is low in efficiency, therefore, an isolation column 117 is further arranged between the front end plate 111 and the rear end plate 113, and the isolation column 117 is arranged at intervals between the front end plate 111 and the rear end plate 113, so that the isolation column 117 sets the discharge outlet 115 into several, of course, the guide plate 12 is provided with a guide chute 121 matched with the several discharge outlets 115, and in order to more conveniently stir the material, the plate chain conveyor 2 comprises a rack and several conveying belts matched with the guide chute 121, that is, the several conveying belts share one rack and the roller at both ends of the rack, which belongs to the existing mature technology, therefore, in the embodiment, no detailed description is given, of course, the stirring device 4 is arranged on each conveying belt. A material collecting barrel is arranged between the conveying belts and at both sides of the rack, so as to conveniently collect the frits of different qualities.

[0026] In order to avoid the frits falling on the isolation column 117, in the embodiment, the top of the isolation column 117 is arranged in a sharp angle. In this way, the frits are conveniently caused to slide off.

[0027] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A quality sorting device for white fused alumina ingots, comprising an ingot hopper and a plate chain conveyor belt disposed below the ingot hopper, wherein a color sorting and identification device is disposed on the plate chain conveyor belt, and a material feeding device is disposed behind the color sorting and identification device, characterized in that, The smelting block bin comprises a bin body and a guide plate arranged at the bottom of the bin body, the guide plate is arranged in an up-down inclined manner, one end of the guide plate away from the bin body is arranged above a plate chain conveyor, a guide groove is arranged on the guide plate, the bin body comprises a front end plate, a rear end plate and side plates arranged on both sides of the front end plate and the rear end plate, the front end plate is arranged vertically, the rear end plate is arranged in an inclined manner and is kept horizontal with the guide plate, the top of the front end plate, the rear end plate and the side plates encloses a feeding port of the bin body, the bottom of the front end plate, the rear end plate and the side plates encloses a discharging port of the bin body, the discharging port is above the guide groove, the bottom of the front end plate is provided with an expansion gap, an expansion gap is arranged on the expansion gap and is used for closing the expansion gap, the top of the closure is hingedly arranged with the front end plate, a turnover cylinder for turning over the closure is arranged on the side plate.

2. A white corundum electrofusion block quality sorting device according to claim 1, characterized in that, An isolation column is further arranged between the front end plate and the rear end plate, the isolation column is arranged in a spaced manner between the front end plate and the rear end plate, the isolation column sets the discharging port into several discharging ports, the guide plate is provided with guide grooves matched with the several discharging ports, the plate chain conveyor comprises a rack and several transmission belts matched with the guide grooves, a material stirring device is arranged on each transmission belt.

3. A white corundum electrofusion cake quality sorting device according to claim 2, characterized in that The top of the isolation column is arranged in a sharp angle.

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