Alloy rapid-hardening sheet discharging and impurity removing device

Abstract

The utility model relates to the technical field of alloy smelting auxiliary equipment, in particular to an alloy rapid hardening sheet discharging and impurity removing device, which comprises a fixed inclined rake mechanism, a fixed inclined rake mechanism, a discharging mechanism and a discharging mechanism, and the material collecting box is arranged on the lateral lower portion of the fixed inclined rake mechanism and used for collecting the flaky alloy. And the vibrating screen is arranged at the tail end of the fixed inclined rake mechanism and is used for separating granular alloy in leaked materials of the fixed inclined rake mechanism. According to the discharging and impurity removing device for the alloy rapid-hardening sheets, the alloy rapid-hardening sheets are separated, dust in a furnace is removed, the alloy purity can be improved, the performance of products made of the alloy rapid-hardening sheets is improved, meanwhile, product grading is achieved, and further quality evaluation, management, market pricing and the like of the products are facilitated. And the fixed inclined rake mechanism and the passive separation rapid hardening sheet are simple in structure, free of extra energy consumption and low in maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy smelting auxiliary equipment, in particular to an alloy quick-solidification thin sheet discharging and impurity removal device. Background Art

[0002] NdFeB alloy products are produced in vacuum melting furnaces, and the product emerging from these furnaces is rapidly solidified alloy flakes. NdFeB alloy is brittle, and the tearing forces and collisions experienced during the ejection process can easily break the rapidly solidified flakes, resulting in a primarily flake-like product with a mixture of granular and powdered alloy. If the NdFeB alloy product is pure, the flake or granular form has little impact on the quality of subsequent processed products. However, in actual production, the ejection of NdFeB alloy from the vacuum melting furnace inevitably releases furnace dust. This dust mixes with the granular and powdered alloy, making it difficult to separate, seriously affecting the quality and performance of subsequent products. Utility Model Content

[0003] The main purpose of the utility model is to provide an alloy quick-setting sheet discharging and impurity removal device, which can separate the furnace dust in the alloy quick-setting sheet coming out of a vacuum melting furnace and improve the purity of the alloy quick-setting sheet.

[0004] The following is an introduction to the idea of ​​solving the problem in this embodiment. The screen coming out of the vacuum melting furnace is a mixture of block materials and granular powders, with the granular powders accounting for a small proportion. The traditional way to separate block materials and powders is cyclone separation, vibrating screen, etc., but cyclone separation consumes a lot of energy, requires many auxiliary equipment such as dust collection equipment, and has high maintenance costs. The vibrating screen is suitable for products with little screen residue, and most of the alloy quick-setting flakes coming out of the vacuum furnace are products, and granular powders are a minority. If a vibrating screen is used directly, it is necessary to frequently flip the vibrating screen to pour out the quick-setting flakes, and the loss of the vibrating screen is too large. For this reason, this embodiment first separates out most of the flaky quick-setting flakes, so that a small amount of granular powdery materials are left and are separated by a vibrating screen. A fixed inclined rake mechanism is used to achieve separation by the material's own gravity, which can reduce energy consumption and has low maintenance costs.

[0005] In order to realize the above idea, according to one aspect of the present invention, a device for discharging and removing impurities from alloy quick-setting thin sheets is provided, comprising:

[0006] Fixed inclined rake mechanism for separating flake alloys;

[0007] The collecting box is arranged at the side and lower part of the fixed inclined rake mechanism and is used for collecting the flake alloy.

[0008] The vibrating screen is arranged at the end of the fixed inclined rake mechanism and is used to separate the granular alloy in the material leaked from the fixed inclined rake mechanism.

[0009] As a further improvement, the fixed oblique rake mechanism includes:

[0010] As a further improvement, its upper end receives the quick-setting thin slices coming out of the vacuum furnace;

[0011] One or more rows of rake teeth are mounted on the upper surface of the material flow inclined plate.

[0012] As a further improvement, the material flow inclined plate is rectangular and has an inclination angle along the direction of the material flow.

[0013] As a further improvement, a material discharge chute is provided on one side of the material flow inclined plate, and the end of the material discharge chute is connected to the material collection box.

[0014] As a further improvement, a feed knob is provided at the upper end of the material flow inclined plate, and a discharge chute is provided at the lower end.

[0015] As a further improvement, the rake teeth are column-shaped, with the lower diameter being larger than the upper diameter.

[0016] As a further improvement, the rake teeth are arranged in no less than two rows, the spacing between the rake teeth in the same row is the same, and the spacing between the rake teeth in different rows is such that the spacing between the rake teeth increases the further up they are.

[0017] The application of the technical solution of the utility model has the following technical effects:

[0018] (1) The separation of alloy rapid solidification flakes and the removal of furnace dust are achieved, which is beneficial to improving the purity of the alloy and the performance of the products made from it.

[0019] (2) Product grading is conducive to further product quality assessment and management, market pricing, etc.

[0020] (3) The fixed inclined rake mechanism in the alloy quick-setting thin sheet discharging and impurity removal device can passively separate the quick-setting thin sheets, which has a simple structure, no extra energy consumption and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 The figure shows the overall structure of the alloy quick-setting sheet discharging and impurity removal device according to the present invention;

[0023] Figure 2 A three-dimensional schematic diagram of a fixed-angle rake mechanism is shown;

[0024] Figure 3A top view of the fixed rake mechanism is shown;

[0025] Figure 4 A side view of the fixed rake mechanism is shown.

[0026] The above drawings include the following reference numerals:

[0027] 1. Fixed oblique rake mechanism;

[0028] 11. Material flow inclined plate;

[0029] 12. Feed chute;

[0030] 13. First row of rake teeth;

[0031] 14. Second row of rake teeth;

[0032] 15. Third row of rake teeth

[0033] 16. Feeding chute;

[0034] 17. Discharge chute;

[0035] 2. Aggregate box;

[0036] 3. Vibrating screen;

[0037] 4. Rake teeth. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] The utility model provides an alloy quick-setting sheet discharging and impurity removal device, such as Figure 1 As shown, the system comprises a fixed oblique rake mechanism 1, a collection bin 2, and a vibrating screen 3. The fixed oblique rake mechanism 1 is used to separate flake alloys; the collection bin 2, located to the side and below the fixed oblique rake mechanism, collects the flake alloys separated by the fixed oblique rake mechanism as the primary finished product. The unseparated portion enters the vibrating screen 3. The vibrating screen 3 is located at the end of the fixed oblique rake mechanism. The remaining portion, which is granular alloy, is also considered part of the finished product, the secondary finished product. Furnace dust and a small amount of powdered alloy are screened off by the vibrating screen and are not considered finished products.

[0040] In this embodiment, the aggregate box and the vibrating screen are common devices, and the structure and working principle of the fixed inclined rake mechanism are mainly introduced below.

[0041] like Figure 2-4 As shown, the fixed inclined rake mechanism 1 includes a material flow inclined plate 11, which is rectangular and has an inclined angle along the direction of material flow.

[0042] The upper end of the material flow inclined plate 11 is provided with a feeding chute 12 to receive the quick-setting thin slices coming out of the vacuum furnace. On the upper surface of the material flow inclined plate 11, three rows of rake teeth are fixed, namely the first row of rake teeth 13, the second row of rake teeth 14, and the third row of rake teeth 15.

[0043] The surface of the material flow inclined plate 11 is a smooth metal surface, and can also be made of other smooth and wear-resistant materials. The rake teeth can be fixed to the material flow inclined plate 11 by welding or riveting.

[0044] A discharge chute 16 is provided on one side of the material flow inclined plate 11, and the end of the discharge chute 16 is connected to the collecting box 2. A discharge chute 17 is provided at the lower end of the material flow inclined plate 11, which is connected to the vibrating screen 3.

[0045] The first row of rake teeth 13 , the second row of rake teeth 14 and the third row of rake teeth 15 are all composed of a plurality of rake teeth 4 .

[0046] The rake teeth 4 can be elongated, preferably in the present embodiment in the form of a columnar platform, with the lower diameter being larger than the upper diameter. This columnar shape is chosen to reduce the chance of the quick-setting sheet becoming stuck. In the event of a material jam, the stuck material is impacted by material rushing down from above. The columnar shape of the rake teeth increases the clearance, making it easier for the impacted quick-setting sheet to loosen and be flushed away.

[0047] The purpose of providing multiple rows of rake teeth is to improve the efficiency of separating the screen sheets and to separate the leaked screen sheets again. In the present embodiment, the number of rows of rake teeth is taken as an example of three rows, and can actually be set as needed.

[0048] The first row of teeth 13, the second row of teeth 14, and the third row of teeth 15 follow the following pattern: the spacing between the teeth of each row is the same. The spacing between the teeth of the first row of teeth 13 is greater than that of the teeth of the second row of teeth 14, and the spacing between the teeth of the second row of teeth 14 is greater than that of the teeth of the third row of teeth 15. This arrangement is intended to separate the screen pieces in a graded manner, prioritizing the large, bulky, and rapidly setting flakes, which are easier to separate, thereby improving overall efficiency.

[0049] Operational Process: After exiting the vacuum furnace, alloy flakes containing granular powder enter the feed chute 12. The material layer should be as thin as possible, ideally a single layer. Once in the feed chute, the flakes slide under gravity toward the first row of rake teeth 13. Particles larger than the spacing between the teeth of the first row 13 are intercepted and forced to slide diagonally to the side, into the discharge chute 16, and then into the collection box. The remaining flakes continue along the material flow ramp 11, passing through the second and third rows of rake teeth 14, 15 for separation. The separated flakes then enter the discharge chute 16 and the collection box, where they are collected as the primary product. After separation by the final row of rake teeth, the remaining flakes primarily consist of granular alloy and powdered furnace dust, with a small amount of flakes of a smaller size remaining. These particles are then screened by a vibrating screen. The remaining fraction, consisting primarily of granular alloy, constitutes the secondary product. The remaining fraction, consisting of furnace dust and dried powdered alloy, is discarded or processed separately.

[0050] As can be seen, this embodiment not only separates the alloy rapid solidification flakes and removes furnace dust, which is beneficial for improving the purity of the alloy and the performance of products made from it, but also achieves product classification. Compared with existing separation methods, it has a simple structure, low energy consumption, and low maintenance costs.

[0051] It should be noted that in this embodiment and this application, the term "discharging" is a noun, referring to the material of the alloy sieve and granular powder mixed from the vacuum melting furnace. In short, discharging refers to the material that comes out, not the verb for the action of discharging.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for discharging and removing impurities from alloy quick-setting thin sheets, characterized in that: include: Fixed inclined rake mechanism for separating flake alloys; A collection box, which is arranged on the side and below the fixed inclined rake mechanism and is used to collect flake alloys; The vibrating screen is arranged at the end of the fixed inclined rake mechanism and is used to separate the granular alloy in the material leaked from the fixed inclined rake mechanism.

2. The alloy rapid solidification sheet discharging and impurity removal device according to claim 1, characterized in that: The fixed oblique rake mechanism comprises: The material flow inclined plate, the upper end of which receives the quick-setting thin slices from the vacuum furnace; One or more rows of rake teeth are mounted on the upper surface of the material flow inclined plate.

3. The alloy rapid solidification sheet discharging and impurity removal device according to claim 2, characterized in that: The material flow inclined plate is rectangular and has an inclination angle along the direction of material flow.

4. The alloy rapid solidification sheet discharging and impurity removal device according to claim 3, characterized in that: A material discharge chute is provided on one side of the material flow inclined plate, and the end of the material discharge chute is connected with the material collection box.

5. The alloy rapid solidification sheet discharging and impurity removal device according to claim 2, characterized in that: The upper end of the material flow inclined plate is provided with a feed knob, and the lower end is provided with a discharge chute.

6. The alloy rapid solidification sheet discharging and impurity removal device according to claim 5, characterized in that: The rake teeth are in the shape of a column, and the diameter of the lower part is larger than the diameter of the upper part.

7. The alloy rapid solidification sheet discharging and impurity removal device according to claim 6, characterized in that: There are no less than two rows of rake teeth, and the spacing between the rake teeth in the same row is the same. The spacing between the rake teeth in different rows has a rule that the spacing between the rake teeth increases the further up they are.

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