Permanent magnet pulverization recovery device
By designing a permanent magnet powder recovery device in a permanent magnet motor, the permanent magnet rotor is sprayed out and powdered by using pressurized gas, the problem of low recycling efficiency of permanent magnets is solved, and efficient separation and utilization of rare earth resources is achieved, which is alleviated. Resource supply pressure.
Patent Information
- Application Number
- CN202420889000.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-26
AI Technical Summary
It is difficult to achieve efficient recycling of permanent magnets in existing permanent magnet motors, resulting in an increase in the supply pressure of rare earth resources and it is difficult to effectively reuse these scarce resources.
A permanent magnet powder recycling device is designed to destroy the explosion-proof disc by pressurizing gas inside the permanent magnet rotor, and spraying out and powdering the permanent magnet rotor, thereby achieving efficient separation and improving recycling efficiency.
It effectively improves the recycling efficiency of permanent magnets, realizes efficient separation and reuse of rare earth resources, and alleviates the pressure of resource supply.
Smart Images
Figure CN222274640U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of magnetic powder recovery, in particular to a permanent magnet pulverization recovery device. Background Art
[0002] With the development of existing technologies, a new type of permanent magnet electrode has emerged. Compared with traditional electrodes, permanent magnet electrodes are more efficient, stable and quiet. The reason for all this lies in its core component, the permanent magnet rotor. The permanent magnets in the permanent magnet rotor provide a strong magnetic force for the motor, allowing the motor to generate high-speed rotation power without an external power supply, making its efficiency many times higher than that of traditional motors.
[0003] At present, the materials used for permanent magnet rotors in permanent magnet motors are mainly neodymium, iron, and boron, which contain a large amount of rare earth and other rare metals. However, due to the complex internal structure of permanent magnet electrodes, it is difficult to efficiently recycle the rare earth resources in permanent magnets. In order to further ease the supply pressure of rare earth resources and reuse these scarce resources, the efficient recycling of permanent magnets is of great significance. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide a permanent magnet pulverization recovery device, which can achieve efficient separation by pulverizing the permanent magnets in the original part and separating them from the original part during the permanent magnet recovery process, thereby improving the efficiency of permanent magnet recovery.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] An embodiment of the present invention provides a permanent magnet pulverization and recovery device, which includes: a first accommodating space, the second end of the first accommodating space is detachably connected to the first end of the second accommodating space; a second accommodating space, the second end of the second accommodating space is provided with a sealing assembly; a sealing assembly, the sealing assembly is detachably connected to the second accommodating space; and a boosting device, the boosting device is arranged on the outer surfaces of the first accommodating space and the second accommodating space.
[0007] Optionally, the sealing assembly includes a piston, a flameproof disc and a sealing head;
[0008] The sealing head is a hollow cylindrical structure, one end of which is an open end and the other end is a closed end. The inner surface of the sealing head is provided with an internal thread near the open end, and the outer surface of the second accommodating space is provided with an external thread matching the internal thread near the second end. The open end of the sealing head is sealed and connected with the second end of the second accommodating space through the matching of the internal thread and the external thread.
[0009] The piston is arranged inside the second accommodation space and is in close contact with the inner wall of the second accommodation space, and can move axially under the action of a force;
[0010] The explosion-proof disc is arranged on the end surface of the second end of the second accommodating space, blocks the second end of the second accommodating space, and abuts against the inner surface of the sealing head in the circumferential direction to form a closed space in the second accommodating space; when the high-pressure gas in the second accommodating space reaches a predetermined pressure threshold, the explosion-proof disc is damaged, so that the second end of the second accommodating space is opened.
[0011] Optionally, the boosting device includes a first boosting device and a second boosting device;
[0012] The first boosting device is disposed at a first end of the first accommodating space and is detachably connected to the first accommodating space;
[0013] The second boosting device is arranged on the surface of the second accommodating space and is detachably connected to the second accommodating space.
[0014] Optionally, the distance between the second boosting device and the first end of the second accommodating space is smaller than the distance between the second boosting device and the second end of the second accommodating space.
[0015] Optionally, the predetermined pressure threshold is a first preset pressure value that the explosion-proof disk can withstand, and the predetermined pressure threshold is determined by the following formula:
[0016]
[0017] Wherein, r is the inner diameter of the second accommodation space, d is the thickness of the explosion-proof disk, It is the shear strength of the material used for the explosion-proof disk.
[0018] Optionally, the first accommodating space and the second accommodating space are used for filling gas, and the shear strength of the explosion-proof disc is less than a first preset pressure value and greater than a second preset pressure value; wherein the first preset pressure value is the maximum pressure that the explosion-proof disc can withstand, and the second preset pressure value is half of the shear strength that the explosion-proof disc can withstand.
[0019] The utility model provides a permanent magnet pulverization and recovery device, which can fill gas into the first accommodating space and / or the second accommodating space through the boosting device to increase the internal pressure of the first accommodating space and / or the second accommodating space until the explosion-proof disk in the sealing component is destroyed due to being unable to withstand the pressure, and the permanent magnet rotor is ejected together with the high-pressure airflow. During the ejection process, the permanent magnets in the original part are pulverized, and other parts are also destroyed but not pulverized, so that the permanent magnets are separated from the original part, and efficient separation of the permanent magnets is achieved, so that the efficiency of permanent magnet recovery is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 It is a structural schematic diagram of a permanent magnet pulverization recovery device in one embodiment of the utility model. DETAILED DESCRIPTION
[0022] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.
[0023] It should be clear that the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The embodiment of the utility model provides a permanent magnet pulverization recovery device, which can improve the efficiency of permanent magnet recovery by pulverizing the permanent magnets in the original part and separating them from the original part during the permanent magnet recovery process.
[0025] The present invention is further described in detail below with reference to the accompanying drawings.
[0026] See also Figure 1 The present embodiment provides a permanent magnet pulverization recovery device, the permanent magnet pulverization recovery device comprising: a first accommodating space 11, the second end of the first accommodating space 11 is detachably connected to the first end of the second accommodating space 12; a second accommodating space 12, the second end of the second accommodating space 12 is provided with a sealing assembly 13; the sealing assembly 13, the sealing assembly 13 is detachably connected to the second accommodating space 12; a boosting device 14, the boosting device is arranged on the outer surfaces of the first accommodating space 11 and the second accommodating space 12;
[0027] Among them, the second end 111 of the first accommodating space 11 is an end of the first accommodating space provided with an opening and an internal thread, and the first end 112 is a closed end of the first accommodating space; the second end 121 of the second accommodating space 12 is an end of the second accommodating space provided with an opening, and the first end 122 is an end of the second accommodating space connected to the first accommodating space; the sealing assembly 13 is detachably connected to the second accommodating space 12, thereby ensuring the reliability of the connection and sealing between the first accommodating space and the second accommodating space.
[0028] The utility model provides a permanent magnet pulverization and recovery device, which can fill gas into a first accommodating space and / or a second accommodating space through a pressurizing device to increase the internal pressure of the first accommodating space and / or the second accommodating space until the explosion-proof disk in the sealing component is destroyed due to being unable to withstand the pressure, and the permanent magnet rotor is ejected together with the high-pressure airflow. During the ejection process, the permanent magnets in the original part are pulverized, and other parts are also destroyed but not pulverized, so that the permanent magnets are separated from the original part, and efficient separation of the permanent magnets is achieved, so that the efficiency of permanent magnet recovery is improved.
[0029] See also Figure 1 In order to improve the sealing effect of the sealing assembly, in some embodiments, the sealing assembly 13 includes a piston 131, a flameproof disc 132 and a sealing head 133; the sealing head 133 is a hollow cylindrical structure, one end of which is an open end and the other end is a closed end, the inner surface of the sealing head 133, near the open end, is provided with an internal thread, the outer surface of the second accommodating space 12, near the second end, is provided with an external thread matching the internal thread, the open end of the sealing head 133 and the second end of the second accommodating space 12 are sealed and connected by the internal thread and the external thread; the piston 131 is arranged inside the second accommodating space 12, and is tightly connected to the inner wall of the second accommodating space 12, and can move axially under the action of the force; The explosion-proof disc 132 is arranged on the end surface of the second end 121 of the second accommodating space 12, blocks the second end 121 of the second accommodating space 12, and abuts against the inner surface of the sealing head 133 in the circumferential direction, so that a closed space is formed in the second accommodating space 12; when the high-pressure gas in the second accommodating space 12 reaches a predetermined pressure threshold, the explosion-proof disc 132 is damaged, so that the second end of the second accommodating space 12 is opened; wherein, the sealing head is used in combination with the piston and the explosion-proof disc, which can ensure the airtightness of the equipment and prevent gas leakage, thereby ensuring the stability of the gas pressure inside the device, and also preventing the entry of external gas, so as to keep the process from being disturbed by the external environment and ensure the recovery efficiency of the permanent magnet.
[0030] See also Figure 1In order to facilitate the control of air pressure in different devices, in some embodiments, the boosting device 14 includes a first boosting device 141 and a second boosting device 142; the first boosting device 141 is arranged at the first end 112 of the first accommodating space 11, and is detachably connected to the first accommodating space 11; the second boosting device 142 is arranged on the surface of the second accommodating space 12, and is detachably connected to the second accommodating space 12; wherein the boosting device includes a needle valve, which can be arranged on the outer surface of the first end of the first accommodating space and / or the middle outer surface of the second accommodating space, and is detachably connected to the first accommodating space and / or the second accommodating space by a thread; the first boosting device 141 is threadedly connected to the first accommodating space 11, and the second boosting device 142 is threadedly connected to the second accommodating space 12, so that gas can be filled into different spaces by controlling different boosting devices, and it is also convenient for operators to disassemble and assemble.
[0031] See also Figure 1 In some embodiments, the distance between the second boosting device 142 and the first end of the second accommodating space 12 is smaller than the distance between the second boosting device 142 and the second end 121 of the second accommodating space; wherein, the filling gas enters the second accommodating space along the second boosting device 142, and the position of the second boosting device 142 cannot be set directly above the piston 131 in the second accommodating space. At the same time, the piston 131 can also move axially under the push of the force to prevent the piston 131 from hindering the filling gas from entering the second accommodating space 12. Therefore, the second boosting device 142 needs to maintain a certain distance from the first end 122 of the second accommodating space so that the filling gas can smoothly enter the second accommodating space.
[0032] See also Figure 1 In order to ensure that the explosion-proof disk is not damaged when the containment device is inflated, in some embodiments, the maximum pressure that the explosion-proof disk can withstand is determined by the following formula:
[0033]
[0034] Wherein, r is the inner diameter of the second accommodation space, d is the thickness of the explosion-proof disk, is the shear strength of the material used for the explosion-proof disk; r can also be the inner diameter of the object serving as the accommodation space. When the second booster device fills the second accommodation space with high-pressure gas, in order to destroy the explosion-proof disk and make the permanent magnet powder spray out together with the high-pressure gas, the maximum pressure that the explosion-proof disk can withstand can be calculated by the above formula. r is the diameter of the inner surface of the second accommodation space, d is the distance between the upper and lower surfaces of the explosion-proof disk, The maximum strength that the explosion-proof disk can withstand can be obtained by referring to the manual based on the materials used, and then calculated through the formula.
[0035] See also Figure 1In some embodiments, the first accommodating space 11 and the second accommodating space 12 are used to fill gas, and the shear strength of the explosion-proof disc 132 is less than the first preset pressure value and greater than the second preset pressure value; wherein the first preset pressure value is the maximum pressure that the explosion-proof disc 132 can withstand, and the second preset pressure value is half of the shear strength that the explosion-proof disc 132 can withstand;
[0036] The shear strength of the explosion-proof plate 132 is less than the first preset pressure value and greater than the second preset pressure value. The purpose is that when the second accommodating space 12 is filled with gas for the first time, the explosion-proof plate 132 is damaged if the permanent magnet separation condition is not achieved inside, thereby causing the permanent magnet to be unable to be separated from the original part; when the second accommodating space 12 is filled with gas for the second time, it is ensured that the explosion-proof plate 132 is damaged if the permanent magnet separation condition is achieved, thereby separating the permanent magnet from the original part, thereby ensuring the separation effect of the permanent magnet.
[0037] In some examples, the explosion-proof plate material can be selected from shear-resistant materials, including 304 stainless steel; the accommodation space can be selected from alloy materials, including 304 stainless steel; and the length, width and height of the accommodation space can also be adjusted according to the length, width and height of the material.
[0038] Among them, the gas filled into the containing space has the characteristic of not reacting with the filled material during the pulverization and recovery process, including oxygen, nitrogen, and carbon dioxide.
[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0040] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A permanent magnet pulverization recovery device, characterized in that: include: a first accommodating space, wherein a second end of the first accommodating space is detachably connected to a first end of the second accommodating space; a second accommodating space, wherein a sealing assembly is provided at a second end of the second accommodating space; A sealing assembly, each of which is detachably connected to the second accommodating space; A pressurizing device is provided on the outer surfaces of the first accommodating space and the second accommodating space.
2. The permanent magnet pulverization recovery device according to claim 1, characterized in that: The sealing assembly includes a piston, a flameproof disc and a sealing head; The sealing head is a hollow cylindrical structure, one end of which is an open end and the other end is a closed end. The inner surface of the sealing head is provided with an internal thread near the open end, and the outer surface of the second accommodating space is provided with an external thread matching the internal thread near the second end. The open end of the sealing head is sealed and connected with the second end of the second accommodating space through the matching of the internal thread and the external thread. The piston is arranged inside the second accommodation space and is in close contact with the inner wall of the second accommodation space, and can move axially under the action of a force; The explosion-proof plate is arranged on the end surface of the second end of the second accommodating space, blocks the second end of the second accommodating space, and abuts against the inner surface of the sealing head in the circumferential direction, so that a closed space is formed in the second accommodating space; When the high-pressure gas in the second accommodation space reaches a predetermined pressure threshold, the explosion-proof disk is damaged, so that the second end of the second accommodation space is opened.
3. The permanent magnet pulverization recovery device according to claim 1, characterized in that: The supercharging device comprises a first supercharging device and a second supercharging device; The first boosting device is disposed at a first end of the first accommodating space and is detachably connected to the first accommodating space; The second boosting device is arranged on the surface of the second accommodating space and is detachably connected to the second accommodating space.
4. The permanent magnet pulverization recovery device according to claim 3, characterized in that: The distance between the second boosting device and the first end of the second accommodating space is smaller than the distance between the second boosting device and the second end of the second accommodating space.
5. The permanent magnet pulverization recovery device according to claim 2, characterized in that: The predetermined pressure threshold is a first preset pressure value that the explosion-proof disk can withstand, and the predetermined pressure threshold is determined by the following formula: ； Wherein, r is the inner diameter of the second accommodation space, d is the thickness of the explosion-proof disk, It is the shear strength of the material used for the explosion-proof disk.
6. The permanent magnet pulverization recovery device according to claim 5, characterized in that: The first accommodating space and the second accommodating space are used for filling gas, and the shear strength of the explosion-proof disc is less than a first preset pressure value and greater than a second preset pressure value; wherein the first preset pressure value is the maximum pressure that the explosion-proof disc can withstand, and the second preset pressure value is half of the shear strength that the explosion-proof disc can withstand.