Nd-Fe-B magnet airflow mill grading impeller replacement device

Abstract

A classifying impeller replacement device for a NdFeB magnet airflow mill, comprising a working position and a maintenance position, and including: a classifying chamber fixedly disposed on the airflow mill body; and a separable assembly including a first rotating component, a second rotating component, and an impeller assembly, wherein the second rotating component is fixedly disposed on the classifying chamber, the first rotating component and the second rotating component are movably connected by a hinge, and the impeller assembly is configured to be accommodated in a first space formed by the first rotating component and the second rotating component facing each other. The impeller assembly can move within the separable assembly, and in conjunction with the opening and closing of the first rotating component, the impeller assembly is subjected to the lifting force of the second rotating component and the pulling force of the first rotating component during movement, making the replacement process more convenient and labor-saving.

Description

Technical Field

[0001] This invention belongs to the field of neodymium iron boron magnet air jet mills, specifically relating to a classifying impeller replacement device for neodymium iron boron magnet air jet mills. Background Technology

[0002] Neodymium iron boron (NdFeB) magnetic materials are tetragonal crystals composed of neodymium, iron, and boron. They are widely used in the manufacture of NdFeB magnets, which are extensively applied in electronic products such as hard drives, mobile phones, headphones, and battery-powered tools. The production process of NdFeB materials requires pulverization, typically achieved using an air jet mill to refine large metal particles. The air jet mill, also known as an air pulverizer, is characterized by its wide applicability and high-fineness finished product due to its pulverization mechanism.

[0003] The classifying impeller is a component in an air jet mill used for screening materials. It needs to withstand friction from the materials. After long-term operation, the classifying impeller will wear down, thus affecting the material separation effect. Therefore, a classifying impeller replacement device is needed to replace the classifying impeller more conveniently and effortlessly. Summary of the Invention

[0004] The present invention addresses the problems existing in the prior art. Specifically, the technical problem to be solved by the present invention is to provide a neodymium iron boron magnet airflow mill classifier impeller replacement device, which can replace the classifier impeller more conveniently and effortlessly.

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

[0006] A classifying impeller replacement device for a NdFeB magnet airflow mill, the device having a working position and a maintenance position, and comprising: a classifying chamber fixedly disposed on the airflow mill body; and a detachable assembly including a first rotating component, a second rotating component, and an impeller assembly, wherein the second rotating component is fixedly disposed on the classifying chamber, the first and second rotating components are movably connected by a hinge and can be opened or closed, and the impeller assembly is configured to be accommodated in a first space formed after the first and second rotating components are closed; the first rotating component has a groove, the impeller assembly has a slider, the slider has a protrusion, and the slider can move in the first space.

[0007] According to this scheme, the impeller assembly can move within the separate assembly. In conjunction with the opening and closing of the first rotating component, the impeller assembly is subjected to an upward lifting force from the second rotating component during the movement, making it more convenient and labor-saving during replacement.

[0008] In a preferred embodiment, the impeller assembly further includes: a piston, a first connecting rod, a first housing fixedly disposed on one end of the first connecting rod, and a movably disposed on the other end of the first connecting rod; wherein, the piston is disposed on the first connecting rod and fixed to the slider, and when in the working position, the grading impeller is accommodated in the accommodating chamber of the grading chamber, making its structure more compact.

[0009] In a preferred embodiment, the first housing includes a fixed part and a movable part, the movable part being rotatably disposed within the fixed part, the fixed part housing a motor, and the graded impeller being connected to the motor via a power shaft passing through the first connecting rod.

[0010] In a preferred embodiment, the first housing is provided with a gear assembly. The gear assembly is configured such that the first locking hole and the second locking hole on the first rotating member and the second rotating member correspond and abut with the first slide rail and the second slide rail on the gear assembly, thereby fixing the positions of the first rotating member and the second rotating member. The movable part is fixedly connected to the first gear of the gear assembly. The first slide rail and the second slide rail have teeth. The first gear abuts with the first slide rail through the teeth. A second gear is provided between the second slide rail and the first gear. One end of the second gear abuts with the first gear, and the other end abuts with the second slide rail through the teeth. The structure is simple and the cost is low.

[0011] In a preferred embodiment, the grading chamber has a seal that seals the grading impeller within the receiving chamber.

[0012] In a preferred embodiment, the movable part has a handle.

[0013] In a preferred embodiment, the cross-section of the protrusion and the groove is T-shaped.

[0014] Beneficial effects: The impeller assembly can move within the separate assembly. In conjunction with the opening and closing of the first rotating component, the impeller assembly is supported by the upward force of the second rotating component during its movement, making it more convenient and labor-saving during replacement. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a neodymium iron boron magnet air jet mill according to the present invention.

[0016] Figure 2 This is a three-dimensional schematic diagram of the graded impeller replacement device in this invention.

[0017] Figure 3 This is a three-dimensional schematic diagram of the graded impeller replacement device for maintenance position in this invention.

[0018] Figure 4 for Figure 3 A magnified view of a section of A.

[0019] Figure 5 This is a three-dimensional schematic diagram of the first rotating component in this invention.

[0020] Figure 6 This is a three-dimensional schematic diagram of the staged impeller replacement device after the first rotating component is removed in this invention.

[0021] Figure 7 for Figure 6 A bottom view.

[0022] Figure 8 This is a three-dimensional schematic diagram of the impeller assembly in this invention.

[0023] Figure 9 This is a cross-sectional view of the graded impeller replacement device in this invention.

[0024] Figure 10 This is a three-dimensional schematic diagram of the gear assembly in this invention.

[0025] Figure 11 This is a cross-sectional view of the gear assembly in this invention. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] In the following embodiments, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the description of this invention; therefore, they should not be construed as limiting this invention. Furthermore, terms such as first, second, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this invention, unless otherwise expressly specified and limited, terms such as installation, connection, linking, etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Please refer to Figure 1The figure shows a neodymium iron boron magnet air jet mill. The grading chamber 103 and the separation assembly 101 are installed at the upper end of the air jet mill, and one side is the discharge port. The principle of the air jet mill is that the airflow drives the material to collide with each other or with the grading impeller 136 from below. Material of appropriate size will pass through the grading impeller 136 and then be discharged from the discharge port.

[0030] Please refer to Figures 2 to 3 The NdFeB magnet airflow mill grading impeller replacement device has a working position and a maintenance position and includes: a grading chamber 103, which is fixedly disposed on the airflow mill body 104; and a separation assembly 101, including a first rotating member 1, a second rotating member 2, and an impeller assembly 105, wherein the second rotating member 2 is fixedly disposed on the grading chamber 103, the first rotating member 1 and the second rotating member 2 can be opened or closed, and the impeller assembly 105 is configured to be accommodated in a first space formed after the first rotating member 1 and the second rotating member 2 are closed; the first rotating member 1 has a groove portion 10, the impeller assembly 105 has a slider 8, the slider 8 has a protrusion portion 9, and the slider 8 can move in the first space.

[0031] The first rotating component 1 and the second rotating component 2 are two semi-cylinders that are combined to form a complete cylinder. A hinge 3 is installed between them, which allows the first rotating component 1 to rotate 0-180° relative to the second rotating component 2. There are two hinges 3, which makes the fixing structure more secure.

[0032] Please refer to Figures 4 to 9 The impeller assembly 105 also includes: a piston 7, a first connecting rod 4, a first housing 18 fixedly disposed on one end of the first connecting rod 4, and a movably disposed graded impeller 136 disposed on the other end of the first connecting rod 4; wherein, the piston 7 is disposed on the first connecting rod 4 and fixed to the slider 8. When in the working position, the graded impeller 136 is accommodated in the receiving chamber 16 of the graded cavity 103, making its structure more compact. The cross-section of the protrusion 9 and the groove 10 is T-shaped. The T-shaped groove can restrict the lateral movement of the object with the T-shaped protrusion 9 and enable the object to make relative horizontal movement corresponding to the track path of the T-shaped groove 10. The components on the first connecting rod 4 are, in sequence, the first housing 18, the slider 8, the piston 7, and the graded impeller 136. The diameter of the first housing 18, the piston 7, and the graded impeller 136 is smaller than the diameter of the circular tube formed by the first rotating member 1 and the second rotating member 2, so that they can move within the restriction of the T-shaped track.

[0033] Please refer to Figure 9The first outer casing 18 includes a fixed part 5 and a movable part 11. The movable part 11 is rotatably disposed inside the fixed part 5. The fixed part 5 is provided with a motor 14. The classifying impeller 136 is connected to the motor 14 by a power shaft 15 passing through the first connecting rod 4. The interior of the first connecting rod 4 is a hollow structure, the purpose of which is to place and install the power shaft 15 so that the motor 14 of the fixed part 5 can transmit power to the classifying impeller 136.

[0034] Please refer to Figures 10 to 11 The first housing 18 is provided with a gear assembly 102, which is configured to allow the first locking hole 1e and the second locking hole 1f on the first rotating member 1 and the second rotating member 2 to abut against the first slide rail 1c and the second slide rail 1d on the gear assembly 102, thereby fixing the positions of the first rotating member 1 and the second rotating member 2. The movable part 11 is fixedly connected to the first gear 1a of the gear assembly 102. The first slide rail 1c and the second slide rail 1d have teeth 20, and the first gear 1a abuts against the first slide rail 1c through the teeth 20. A second gear 1b is provided between the second slide rail 1d and the first gear 1a, and one end of the second gear 1b is connected to the first gear 1a. The first slide rail 1c and the second slide rail 1d abut against each other through teeth 20. The structure is simple and low in cost. It is worth noting that this fixing structure can fix the first rotating part 1 and the second rotating part 2, and also fix the impeller assembly 105. When the gear is rotating and preparing to close, the first slide rail 1c and the second slide rail 1d abut against the first locking hole 1e and the second locking hole 1f, applying a lateral force to the first rotating part 1, thereby restricting the rotation of the first rotating part 1 and fixing it. The movable part 11 is connected to the gear assembly 102. The movable part 11 also has a handle 19, which can be conveniently fixed through the structure of the handle 19. At the same time, the movable part 11 has a limiting structure that can limit the rotation position.

[0035] Please refer to Figure 9The grading chamber 103 has a sealing element 17, which seals the grading impeller 136 within the receiving chamber 16. During operation, the NdFeB magnet airflow mill grading impeller 136 replacement device is in the working position. The grading impeller 136 corresponds to the receiving chamber 16 in the grading chamber 103. Both ends of the grading impeller 136 are sealed with sealing elements 17, allowing material to pass through the grading impeller 136 and reach the discharge port. Through the fixing of the gear assembly 102, the grading impeller 136 is firmly fixed within the grading chamber 103. When the NdFeB magnet airflow mill grading impeller 136 replacement device is in the maintenance position, first turn counterclockwise... Rotate the handle 19 to disengage the gear assembly 102 from the first locking hole 1e and the second locking hole 1f. The first slide rail 1c and the second slide rail 1d will no longer abut against the first locking hole 1e and the second locking hole 1f. Then, pull out the impeller assembly 105. Since the protrusion 9 of the impeller assembly 105 and the groove 10 of the first rotating member 1 are not equipped with a pull-out limit device, they can be pulled out completely for maintenance. Maintenance personnel can also choose to pull out the grade assembly directly until the slider 8 is exactly at the end of the first rotating member 1. At this time, rotate the first rotating member 1 so that the grade assembly can be supported by the first rotating member 1, making maintenance more convenient.

[0036] The scope of protection of this invention includes, but is not limited to, the above embodiments. The scope of protection of this invention is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art fall within the scope of protection of this invention.

Claims

1. A classifier impeller replacement device for a neodymium iron boron magnet airflow mill, characterized in that, The NdFeB magnet airflow mill classifier impeller replacement device has a working position and a maintenance position, and includes: A grading chamber (103) is fixedly disposed on the air jet mill body (104); and The separate assembly (101) includes a first rotating component (1), a second rotating component (2), and an impeller assembly (105). The second rotating member (2) is fixedly disposed on the grading chamber (103), the first rotating member (1) and the second rotating member (2) can be opened or closed, and the impeller assembly (105) is configured to be accommodated in the first space formed after the first rotating member (1) and the second rotating member (2) are closed; The first rotating member (1) has a groove (10), the impeller assembly (105) has a slider (8), the slider (8) has a protrusion (9), and the slider (8) can move in the first space; The impeller assembly (105) further includes a piston (7), a first connecting rod (4), a first housing (18) fixedly disposed on one end of the first connecting rod (4), and a movably disposed on the other end of the first connecting rod (4); the piston (7) is disposed on the first connecting rod (4) and fixed to the slider (8), and when in the working position, the grading impeller (136) is accommodated in the accommodating chamber (16) of the grading chamber (103); The first housing (18) includes a fixed part (5) and a movable part (11). The movable part (11) is rotatably disposed within the fixed part (5). A motor (14) is disposed within the fixed part (5). The graded impeller (136) is connected to the motor (14) via a power shaft (15) passing through the first connecting rod (4). A gear assembly (102) is disposed within the first housing (18). The gear assembly (102) is configured such that the first locking hole (1e) and the second locking hole (1f) on the first rotating member (1) and the second rotating member (2) are connected to the first slide rail (1c) on the gear assembly (102). The first slide rail (1c) and the second slide rail (1d) are aligned and abut against each other, and the positions of the first rotating member (1) and the second rotating member (2) are fixed. The movable part (11) is fixedly connected to the first gear (1a) of the gear assembly (102). The first slide rail (1c) and the second slide rail (1d) have teeth (20). The first gear (1a) and the first slide rail (1c) abut against each other through the teeth (20). A second gear (1b) is provided between the second slide rail (1d) and the first gear (1a). One end of the second gear (1b) abuts against the first gear (1a), and the other end abuts against the second slide rail (1d) through the teeth (20).

2. The NdFeB magnet airflow mill grading impeller replacement device according to claim 1, characterized in that, The grading chamber (103) has a seal (17) that allows the grading impeller (136) to be sealed within the receiving chamber (16).

3. The NdFeB magnet airflow mill classifier impeller replacement device according to claim 1, characterized in that, The movable part (11) has a handle (19).

4. The NdFeB magnet airflow mill grading impeller replacement device according to claim 1, characterized in that, The cross-sections of the protrusion (9) and the groove (10) are both T-shaped.

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