Uniform discharging device for neodymium iron boron hydrogen decrepitation furnace

Abstract

The uniform discharging device comprises a discharging hopper and a discharging pipe which are located at the bottom of the hydrogen decrepitation furnace, a rotating motor connected with a rotating shaft is arranged in the discharging hopper, a plurality of first stirring rods are arranged on the periphery of the rotating shaft, a filter screen is arranged on the top of the discharging hopper, and a plurality of second stirring rods are arranged on the top of the discharging hopper. The first stirring rod located at the bottom end is provided with a plurality of grinding rollers making contact with the surface of the filter screen. The scraping and scattering effects are achieved, and uniform discharging is achieved; and meanwhile, the materials above the filter screen are fully refined, secondary manual crushing is not needed after collection is completed, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron technology, and specifically to a uniform discharge device for a neodymium iron boron hydrogen crushing furnace. Background Technology

[0002] Sintered NdFeB, as a permanent magnet material, has excellent magnetic properties and is widely used in electronics, power machinery, medical devices, toys, packaging, hardware machinery, aerospace and other fields. Common applications include permanent magnet motors, loudspeakers, magnetic separators, computer disk drives, and magnetic resonance imaging equipment.

[0003] Currently, the main steps for hydrogen crushing operations using a hydrogen crushing furnace include feeding, vacuuming, hydrogen filling, heating to remove hydrogen, cooling, filling with inert gas, and unloading. In existing hydrogen crushing furnaces, during the discharge process, alloy powders of varying particle sizes are discharged and collected, requiring secondary manual crushing, which is time-consuming and labor-intensive. Furthermore, powder blockages in the discharge pipe necessitate manual unblocking, and a significant amount of alloy powder adheres to the inner wall of the discharge pipe, resulting in waste. Utility Model Content

[0004] The purpose of this invention is to provide a uniform discharge device for a neodymium iron boron hydrogen crushing furnace, which enables the alloy powder to be discharged uniformly through the discharge hopper and discharge pipe without the need for secondary manual crushing, and at the same time scrapes off the alloy powder adhering to the inner wall of the discharge hopper and discharge pipe in a timely manner.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0006] A uniform discharge device for a NdFeB hydrogen crushing furnace includes a discharge hopper and a discharge pipe located at the bottom of the furnace. A rotary motor connected to a rotating shaft is installed inside the discharge hopper. Multiple first stirring rods are arranged on the outer periphery of the rotating shaft. A filter screen is installed at the top of the discharge hopper. Multiple grinding rollers are arranged on the first stirring rods at the bottom end to contact the surface of the filter screen.

[0007] Furthermore, the bottom surface of the first stirring rod located at the bottom end is provided with multiple welded mounting plates, and the grinding roller is located between adjacent mounting plates.

[0008] Furthermore, a circular plate is provided at the top of the discharge hopper, a through hole is provided in the circular plate through the rotating shaft, and a sleeve is provided at the top of the rotating shaft. A scraper is provided on the outer periphery of the sleeve to contact the surface of the circular plate.

[0009] Furthermore, a bearing is provided inside the through hole to connect with the rotating shaft.

[0010] Furthermore, the outer diameter of the sleeve is larger than the inner diameter of the through hole.

[0011] Furthermore, the circular plate is provided with a first drain hole and a second drain hole for feeding, wherein the diameter of the first drain hole is larger than the diameter of the second drain hole.

[0012] Furthermore, scrapers are provided at the ends of the multiple first stirring rods away from the rotating shaft, which are in contact with the inner wall of the discharge hopper.

[0013] Furthermore, multiple second stirring rods are provided on the outer periphery of the rotating shaft of the discharge pipe, and retractable scraper three is provided on the end of the second stirring rod away from the rotating shaft.

[0014] Furthermore, a groove is provided at the end of the second stirring rod, and multiple protrusions are provided on the side of the scraper three, the protrusions being located within the groove for telescopic movement.

[0015] Furthermore, a spring fixedly connected to the protrusion is provided in the groove.

[0016] The beneficial effects of this utility model are:

[0017] This invention achieves uniform material discharge by setting up a rotary motor, a first stirring rod, and a second stirring rod, and by setting up three types of scrapers to scrape and disperse the circular plate, the discharge hopper, and the discharge pipe respectively; at the same time, a grinding roller is set at the bottom of the first stirring rod to fully refine the material above the filter screen, so that no secondary manual crushing is required after collection, thus improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a top view of the circular plate of this utility model.

[0020] Figure 3 for Figure 1 A magnified schematic diagram of the structure of circle A in the middle;

[0021] Figure 4 for Figure 1 A magnified schematic diagram of the structure of circle B in the middle.

[0022] Reference numerals: 1-Discharge hopper, 2-Discharge pipe, 3-Rotary motor, 30-Shaft, 31-Sleeve, 32-First stirring rod, 33-Second stirring rod, 4-Circular plate, 40-Through hole, 41-Leakage hole one, 42-Leakage hole two, 43-Bearing, 5-Scraper one, 6-Scraper two, 7-Scraper three, 70-Protruding rod, 71-Spring, 8-Mounting plate, 80-Grinding roller, 9-Filter screen. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1

[0027] Embodiment 1 of this utility model is a uniform discharge device for a NdFeB hydrogen crushing furnace, including a discharge hopper 1 and a discharge pipe 2 located at the bottom of the hydrogen crushing furnace. A rotary motor 3 connected to a rotating shaft 30 is installed inside the discharge hopper 1. Multiple first stirring rods 32 are arranged on the outer periphery of the rotating shaft 30. A filter screen 9 is installed on the top of the discharge hopper 1. Multiple grinding rollers 80 are arranged on the first stirring rods 32 at the bottom end to contact the surface of the filter screen 9.

[0028] Reference Figures 1 to 3The hydrogen crushing furnace is generally placed horizontally during operation. During discharge, the overall angle of the furnace is changed so that the discharge hopper 1 and discharge pipe 2 are tilted or perpendicular to the ground. Therefore, this invention mainly addresses this by setting the discharge hopper 1 and discharge pipe 2 at the bottom of the hydrogen crushing furnace, i.e., on one side of the furnace (referring to the furnace's state during discharge). The rotary motor 3 inside the discharge hopper 1 drives the rotating shaft 30 to rotate, thereby causing the first stirring rod 32 to uniformly stir the material in the hopper, preventing blockages and slowing down the discharge speed. Simultaneously, material passing through the filter screen 9 is directly discharged through the discharge pipe 2. Material not passing through the filter screen 9, under the rotation of the first stirring rod 32 at the bottom, causes the grinding roller 80 connected below to rotate concentrically with the first stirring rod 32, grinding the material above the filter screen 9, thus fully refining the material. This eliminates the need for secondary manual crushing after collection, improving work efficiency.

[0029] The actual pore size of filter screen 9 is set according to requirements to better suit the particle size requirements of the material in the hydrogen crushing furnace.

[0030] It should be noted that multiple welded mounting plates 8 are provided on the bottom surface of the first stirring rod 32 located at the bottom end, and the grinding roller 80 is located between adjacent mounting plates 8. The mounting plates 8 provide conditions for the installation of the grinding roller 80, thereby ensuring the stable installation of the grinding roller 80 and facilitating its grinding function.

[0031] Meanwhile, to provide a stable installation for the rotary motor 3, a circular plate 4 is provided at the top of the discharge hopper 1. The rotating shaft 30 passes through a through hole 40 in the circular plate 4, and a sleeve 31 is provided at the top of the rotating shaft 30. A scraper 5 is provided on the outer periphery of the sleeve 31, which contacts the surface of the circular plate 4. The sleeve 31 is located above and in contact with the circular plate 4, and is fixedly connected to the rotating shaft 30, providing conditions and support for the installation of the rotary motor 3. At the same time, multiple connecting rods fixed to the inner wall of the discharge hopper 1 can also be provided on the outer periphery of the rotary motor 3. The connecting rods here are existing technology and will not be described in detail here.

[0032] In addition, a scraper 5 is provided on the outer periphery of the sleeve 31. The scraper 5 contacts the surface of the circular plate 4, so that it scrapes off the material that the circular plate 4 avoids during rotation, and the material falls through the circular plate 4 into the discharge pipe 2.

[0033] In some preferred embodiments, a bearing 43 is provided in the through hole 40 and connected to the rotating shaft 30. The bearing 43 mainly provides conditions for the rotational movement of the rotating shaft 30 at the circular plate 4, and prevents the circular plate 4 from shifting as the rotating shaft 30 rotates.

[0034] To ensure the sleeve 31 is more securely positioned above the circular plate 4, the outer diameter of the sleeve 31 is larger than the inner diameter of the through hole 40. Furthermore, the inner diameter of the sleeve 31 is smaller than the inner diameter of the through hole 40, so that the bottom of the sleeve 31 is in contact with the surface of the circular plate 4 and the bearing 43 located inside the through hole 40. To reduce the frictional force at the bottom of the sleeve 31 when it rotates with the shaft 30, multiple ball bearings can be installed at the bottom of the sleeve 31 to contact the surfaces of the circular plate 4 and the bearing 43, reducing wear and extending service life.

[0035] Specifically, the circular plate 4 is provided with a first drain hole 41 and a second drain hole 42 for material discharge, wherein the diameter of the first drain hole 41 is larger than the diameter of the second drain hole 42. The material scraped from the surface of the circular plate 4 by the first drain hole 41 and the second drain hole 42 falls downwards into the discharge pipe 2 for discharge. There are multiple first drain holes 41 and second drain holes 42, evenly distributed throughout the circular plate 4.

[0036] Furthermore, scraper blades 6 are provided at the ends of the multiple first stirring rods 32 away from the rotating shaft 30, which are in contact with the inner wall of the discharge hopper 1. The side portions of the scraper blades 6 are connected to the multiple first stirring rods 32 respectively, providing a stable rotational action for the scraper blades 6 to promptly scrape the material on the inner wall of the discharge hopper 1.

[0037] Example 2

[0038] This embodiment 2 is implemented based on embodiment 1. Multiple second stirring rods 33 are arranged around the outer periphery of the rotating shaft 30 of the discharge pipe 2. A retractable scraper 7 is provided at the end of each second stirring rod 33 away from the rotating shaft 30. Under the action of the second connecting rod, the scraper 7 promptly scrapes away material from the inside of the discharge hopper 1 and disperses the material inside the discharge hopper 1, preventing blockage and accumulation, and improving the discharge speed.

[0039] In addition, refer to Figure 4 The second stirring rod 33 has a groove at its end, and the scraper 7 has multiple protruding rods 70 on its side. These protruding rods 70 extend and retract within the groove. A spring 71 is fixedly connected to the protruding rod 70 within the groove. By providing a groove at the connection point of the two stirring rods, and using the spring 71 to assemble the protruding rod 70 into the groove, the protruding rod 70 extends and retracts within the groove, adapting to scraping materials of varying thicknesses adhering to the discharge pipe 2, thus improving the utilization rate of the scraper 7. The groove is not shown in the figure.

[0040] The working principle of this utility model is as follows: During use, the rotary motor 3 is started, and the material moves downwards through the first hole 41 and the second hole 42 into the filter screen 9 and the discharge pipe 2. The scraper 5 scrapes away the material avoided by the circular plate 4, causing the material to fall into the discharge pipe 2 through the circular plate 4. The first stirring rod 32 drives the grinding roller 80 to rotate in the same direction, grinding the material above the filter screen 9, thereby fully refining the material and eliminating the need for secondary manual crushing after collection, thus improving work efficiency. The second stirring rod 33 drives the scraper 7 to disperse the material in the discharge pipe 2, while simultaneously scraping away materials of different thicknesses adhering to the discharge pipe 2, improving the utilization rate of the scraper 7. Ultimately, the alloy powder is uniformly discharged through the discharge hopper 1 and the discharge pipe 2, eliminating the need for secondary manual crushing, and simultaneously scraping away the alloy powder adhering to the inner walls of the discharge hopper 1 and the discharge pipe 2.

[0041] 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 way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A uniform discharge device for a NdFeB-H hydrogen pulverizer, characterized in that, It includes a discharge hopper (1) and a discharge pipe (2) located at the bottom of the hydrogen crushing furnace. The discharge hopper (1) is equipped with a rotary motor (3) connected to a rotating shaft (30). Multiple first stirring rods (32) are arranged on the outer periphery of the rotating shaft (30). A filter screen (9) is arranged on the top of the discharge hopper (1). Multiple grinding rollers (80) are arranged on the first stirring rods (32) at the bottom end to contact the surface of the filter screen (9).

2. The uniform discharge device for a NdFeB-H hydrogen pulverizer according to claim 1, characterized in that, The bottom surface of the first stirring rod (32) located at the bottom end is provided with multiple welded mounting plates (8), and the grinding roller (80) is located between adjacent mounting plates (8).

3. A uniform discharge device for a NdFeB-H hydrogen pulverizer according to claim 1, characterized in that, The top of the discharge hopper (1) is provided with a circular plate (4), the rotating shaft (30) has a through hole (40) in the circular plate (4) and the top of the rotating shaft (30) is provided with a sleeve (31), and the outer periphery of the sleeve (31) is provided with a scraper (5) that contacts the surface of the circular plate (4).

4. A uniform discharge device for a NdFeB-H hydrogen pulverizer according to claim 3, characterized in that, The through hole (40) is provided with a bearing (43) that is connected to the rotating shaft (30).

5. A uniform discharge device for a NdFeB-H hydrogen pulverizer according to claim 3, characterized in that, The outer diameter of the sleeve (31) is larger than the inner diameter of the through hole (40).

6. A uniform discharge device for a NdFeB-H hydrogen pulverizer according to claim 3, characterized in that, The circular plate (4) is provided with a first drain hole (41) and a second drain hole (42) for feeding, wherein the diameter of the first drain hole (41) is larger than the diameter of the second drain hole (42).

7. A uniform discharge device for a NdFeB-H hydrogen pulverizer according to claim 3, characterized in that, Multiple first stirring rods (32) are provided with scraper two (6) at the ends away from the rotating shaft (30) that contact the inner wall of the discharge hopper (1).

8. A uniform discharge device for a NdFeB-H hydrogen pulverizer according to claim 3, characterized in that, Multiple second stirring rods (33) are provided on the outer periphery of the rotating shaft (30) of the discharge pipe (2), and a retractable scraper (7) is provided at the end of the second stirring rod (33) away from the rotating shaft (30).

9. A uniform discharge device for a NdFeB-H hydrogen crushing furnace according to claim 8, characterized in that, The end of the second stirring rod (33) is provided with a groove, and the side of the scraper (7) is provided with a plurality of protrusions (70), which are located in the groove and can extend and retract.

10. A uniform discharge device for a NdFeB-H hydrogen crushing furnace according to claim 9, characterized in that, A spring (71) is provided in the groove and is fixedly connected to the protrusion (70).

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