Rotary hydrogen decrepitation furnace

Abstract

The utility model discloses a rotary hydrogen decrepitation furnace, which belongs to the technical field of hydrogen decrepitation furnaces, and is characterized in that the rotary hydrogen decrepitation furnace comprises a hydrogen decrepitation furnace barrel body; the feeding barrel is mounted at one end of the hydrogen decrepitation furnace barrel; the discharging barrel is mounted at the other end of the hydrogen decrepitation furnace barrel; the shaft body penetrates through the hydrogen decrepitation furnace barrel body and is movably connected with the feeding barrel body and the discharging barrel body; the cooling mechanism comprises a cooling sleeve which is sleeved on the hydrogen decrepitation furnace barrel body; wherein a cooling cavity is formed between the cooling sleeve and the hydrogen decrepitation furnace barrel body, the cooling cavity is filled with cooling liquid, and the cooling sleeve is provided with a liquid inlet pipe and a liquid outlet pipe. The cooling speed of the powder can be increased, and the production efficiency of the powder is further improved.

Description

Technical Field

[0001] The present application belongs to the technical field of hydrogen crushing furnaces, and in particular, relates to a rotary hydrogen crushing furnace. Background Art

[0002] With the development of science and technology, NdFeB rare earth permanent magnet devices are now playing an important role in various electronic products as indispensable electronic components. The main production process of sintered NdFeB includes batching, smelting, hydrogen crushing, air flow grinding, isostatic pressing, forming sintering, etc. The hydrogen crushing process uses the hydrogen absorption characteristics of rare earth metal compounds to place the NdFeB alloy in a hydrogen environment. Hydrogen enters the alloy along the Nd-rich phase thin layer, causing it to expand, burst and break, and crack along the Nd-rich phase layer, thereby turning the thin sheet into powder.

[0003] The existing Chinese patent with publication number CN110614374B discloses a NdFeB casting sheet hydrogen crushing low-oxygen rotary discharging device, which belongs to the technical field of NdFeB magnet preparation, and comprises: a hydrogen crushing furnace barrel; a pressure cover, which is arranged at one end of the hydrogen crushing furnace barrel; a first valve, which is arranged between one end of the hydrogen crushing furnace barrel and the pressure cover; an inflation rotary joint, which is arranged on the pressure cover; a rotating sleeve, one end of the rotating sleeve is fixedly connected to the other end of the hydrogen crushing furnace barrel; a second valve, which is arranged between the other end of the hydrogen crushing furnace barrel and one end of the rotating sleeve; a discharge interface, one end of the discharge interface is fixedly connected to the other end of the rotating sleeve, and an inflation interface is arranged on the discharge interface; a discharge port valve, which is arranged at the other end of the discharge interface.

[0004] Although the above hydrogen crushing furnace prevents air from entering the furnace body, the high-speed friction between the powders generates a large amount of heat during the hydrogen crushing process. After dehydrogenation is completed, the material needs to be cooled and discharged. However, the cooling time of the existing equipment is too long, resulting in low production efficiency. Summary of the invention

[0005] The purpose of this application is to provide a rotary hydrogen crushing furnace to address the above-mentioned technical problems, which can accelerate the cooling rate of powder and further improve the production efficiency of powder.

[0006] The present application provides a rotary hydrogen crushing furnace, comprising:

[0007] Hydrogen crushing furnace barrel;

[0008] The feed cylinder is installed at one end of the hydrogen crushing furnace barrel;

[0009] The discharge barrel is installed at the other end of the hydrogen crushing furnace barrel;

[0010] The shaft body penetrates through the hydrogen crushing furnace barrel and is movably connected with the feed barrel body and the discharge barrel body;

[0011] The cooling mechanism includes a cooling sleeve which is sleeved on the barrel of the hydrogen crushing furnace;

[0012] Wherein, a cooling cavity is arranged between the cooling sleeve and the barrel of the hydrogen crushing furnace, the cooling cavity is filled with coolant, and the cooling sleeve is provided with a liquid inlet pipe and a liquid outlet pipe.

[0013] The powder enters the hydrogen crushing furnace barrel through the feed cylinder, and is discharged through the discharge cylinder after crushing. The shaft body is connected to the feed cylinder and the discharge cylinder through sealed bearings and seals to ensure mutual sealing and mobility. The shaft body facilitates the installation and connection of the hydrogen crushing furnace barrel, the feed cylinder and the discharge cylinder. The hydrogen crushing furnace can be quickly cooled through the cooling mechanism to improve production efficiency. The coolant enters the cooling chamber through the liquid inlet pipe and then flows out from the liquid outlet pipe. The heat on the surface of the hydrogen crushing furnace barrel is quickly exchanged through the coolant.

[0014] Furthermore, the outer wall surface of the hydrogen crushing furnace barrel is provided with heat dissipation fins.

[0015] The contact area between the outer wall surface of the hydrogen crushing furnace barrel and the coolant is increased by the heat dissipation fins, thereby improving the cooling efficiency. The heat dissipation fins are installed and connected to the hydrogen crushing furnace barrel or are integrally connected.

[0016] Furthermore, the feeding cylinder comprises:

[0017] Two first valves are provided and installed on the feed cylinder;

[0018] A first air inlet is installed on the feed cylinder and is placed between the two first valves;

[0019] A first air outlet is installed on the feed cylinder and is placed between the two first valves;

[0020] Wherein, the feed cylinder and the hydrogen crushing furnace barrel are connected through a sealed bearing and a seal.

[0021] The material is placed in the feed cylinder, and the opening and closing of the first valve far away from the hydrogen crushing furnace barrel is controlled, the material is first placed between the two first valves, hydrogen is introduced through the first air inlet, and the gas is discharged from the first air outlet, and the gas in the space between the two valves where the feed cylinder is placed is completely replaced with hydrogen, and then the first valve close to the hydrogen crushing furnace barrel is controlled to open, so that the material enters the hydrogen crushing furnace barrel, and the feed cylinder and the hydrogen crushing furnace barrel are connected by a sealing bearing and a sealing member to improve the sealing between the feed cylinder and the hydrogen crushing furnace barrel.

[0022] Furthermore, the discharging cylinder comprises:

[0023] The second valve is provided with two and is installed on the discharge cylinder;

[0024] A second air inlet is installed on the discharge cylinder and is placed between the two second valves;

[0025] A second air outlet is installed on the discharge cylinder and is placed between the two second valves;

[0026] Wherein, the discharging cylinder is connected to the hydrogen crushing furnace barrel through a sealing bearing and a sealing member.

[0027] When the powder in the hydrogen crushing furnace barrel enters the discharge cylinder, first open the second valve close to the hydrogen crushing furnace barrel. When the powder is placed between the two second valves, nitrogen is introduced through the second air inlet to cool it again. The discharged hydrogen and nitrogen mixed gas is collected through the second air outlet. When the gas between the two second valves is completely replaced with nitrogen, open the second valve away from the hydrogen crushing furnace barrel to discharge the powder, and then close the valve to replace the gas between the two second valves with hydrogen through the second air inlet and the second air outlet.

[0028] Furthermore, the shaft body comprises:

[0029] The roller body is placed in the barrel of the hydrogen crushing furnace;

[0030] A bracket, connected between the roller body and the shaft body;

[0031] The outer surface of the roller body is provided with a threaded portion, the shaft body is provided with a conveying hole, the bracket is provided with a conveying channel connected to the conveying hole, and the roller body is provided with a cavity connected to the conveying channel.

[0032] The roller body is installed on the shaft body through the bracket. When the hydrogen crushing furnace barrel is driven to rotate by the driving device, the roller body acts on the material to pre-crush the material. The crushing effect of the roller body is improved by the threaded part. The coolant is connected through the conveying hole, conveying channel and cavity, so that the coolant can cool the material in the hydrogen crushing furnace barrel. The roller body is installed at one end close to the feed cylinder.

[0033] Furthermore, the shaft body comprises:

[0034] There are two gas delivery channels, and the axes thereof are parallel to the axis of the shaft body;

[0035] The gas transmission hole is connected to the gas transmission channel.

[0036] Hydrogen is transported into the hydrogen crushing furnace barrel through the gas transmission channel and the gas transmission hole, the amount of hydrogen in the hydrogen crushing furnace barrel is maintained, and the crushing of powder is ensured.

[0037] Furthermore, the hydrogen crushing furnace barrel is provided with a plurality of filter screens.

[0038] By setting up a filter, powder that meets the particle size can pass through and large particles of powder can be intercepted to prevent large particles of powder from affecting subsequent processing. The filter is installed between the shaft and the inner wall of the hydrogen crushing furnace barrel.

[0039] The beneficial effects of this application are:

[0040] 1. The cooling mechanism enables the hydrogen crushing furnace to be cooled quickly to improve production efficiency, and the heat on the surface of the hydrogen crushing furnace barrel is quickly exchanged through the coolant.

[0041] 2. The contact area between the outer wall of the hydrogen crushing furnace barrel and the coolant is increased by heat dissipation fins, thereby improving the cooling efficiency.

[0042] 3. When the barrel of the hydrogen crushing furnace is driven to rotate by the driving device, the roller acts on the material to pre-crush the material, and the crushing effect of the roller is improved through the threaded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the structure of the hydrogen crushing furnace barrel of the present application;

[0044] Figure 2 This is a cross-sectional view of the barrel of the hydrogen crushing furnace of the present application;

[0045] Figure 3 This is a schematic diagram of the structure of the roller body of the present application;

[0046] Figure 4 For this application Figure 3 Schematic diagram of the structure of AA;

[0047] The reference numerals in the figure are as follows: 100, hydrogen crushing furnace barrel; 200, feed cylinder; 210, first valve; 220, first air inlet; 230, first air outlet; 300, discharge cylinder; 310, second valve; 320, second air inlet; 330, second air outlet; 400, shaft; 410, roller; 411, threaded portion; 412, cavity; 420, bracket; 421, conveying channel; 430, conveying hole; 440, air delivery channel; 441, air delivery hole; 500, cooling mechanism; 510, cooling sleeve; 520, cooling cavity; 530, liquid inlet pipe; 540, liquid outlet pipe; 550, heat sink fins; 600, filter screen. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0049] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0050] The following provides a detailed description of the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0051] Embodiment 1:

[0052] like Figure 1 , Figure 2 As shown, the embodiment of the present application provides a rotary hydrogen crushing furnace, comprising:

[0053] Hydrogen crushing furnace barrel 100;

[0054] The feed cylinder 200 is installed at one end of the hydrogen crushing furnace barrel 100;

[0055] The discharge barrel 300 is installed at the other end of the hydrogen crushing furnace barrel 100;

[0056] The shaft 400 penetrates through the hydrogen crushing furnace barrel 100 and is movably connected with the feed barrel 200 and the discharge barrel 300;

[0057] The cooling mechanism 500 includes a cooling sleeve 510, which is sleeved on the hydrogen crushing furnace barrel 100;

[0058] A cooling cavity 520 is provided between the cooling sleeve 510 and the hydrogen crushing furnace barrel 100 . The cooling cavity 520 is filled with coolant. The cooling sleeve 510 is provided with a liquid inlet pipe 530 and a liquid outlet pipe 540 .

[0059] The powder enters the hydrogen crushing furnace barrel through the feed cylinder 200, and is discharged through the discharge cylinder 300 after being crushed. The shaft 400 is connected to the feed cylinder 200 and the discharge cylinder 300 through sealed bearings and seals to ensure mutual sealing and mobility. The shaft 400 facilitates the installation and connection of the hydrogen crushing furnace barrel 100, the feed cylinder 200, and the discharge cylinder 300. The cooling mechanism 500 enables the hydrogen crushing furnace to be quickly cooled to improve production efficiency. The coolant enters the cooling chamber 520 through the liquid inlet pipe 530, and then flows out from the liquid outlet pipe 540. The heat on the surface of the hydrogen crushing furnace barrel 100 is quickly exchanged through the coolant.

[0060] Furthermore, the outer wall surface of the hydrogen crushing furnace barrel 100 is provided with heat dissipation fins 550 .

[0061] The contact area between the outer wall surface of the hydrogen crushing furnace barrel 100 and the coolant is increased by the heat dissipation fins 550, thereby improving the cooling efficiency. The heat dissipation fins 550 are installed and connected to the hydrogen crushing furnace barrel 100 or are integrally connected.

[0062] Embodiment 2:

[0063] like Figure 1 , Figure 2 As shown, the embodiment of the present application provides a rotary hydrogen crushing furnace. In addition to the above technical features, the feed cylinder 200 further includes:

[0064] Two first valves 210 are provided and installed on the feeding cylinder 200;

[0065] The first air inlet 220 is installed on the feed cylinder 200 and is placed between the two first valves 210;

[0066] The first gas outlet 230 is installed on the feed cylinder 200 and is placed between the two first valves 210;

[0067] The feed cylinder 200 is connected to the hydrogen crushing furnace barrel 100 via a sealed bearing and a seal.

[0068] The material is placed in the feed cylinder 200, and by controlling the opening and closing of the first valve 210 far away from the hydrogen crushing furnace barrel 100, the material is first placed between the two first valves 210, hydrogen is introduced through the first air inlet 220, and the gas is discharged through the first air outlet 230, and the gas in the space between the two valves of the feed cylinder 200 is completely replaced with hydrogen, and then the first valve 210 close to the hydrogen crushing furnace barrel 100 is controlled to open, so that the material enters the hydrogen crushing furnace barrel 100, and the feed cylinder 200 and the hydrogen crushing furnace barrel 100 are connected by a sealing bearing and a sealing member to improve the sealing between the feed cylinder 200 and the hydrogen crushing furnace barrel 100.

[0069] Furthermore, the discharging cylinder 300 comprises:

[0070] Two second valves 310 are provided and installed on the discharge cylinder 300;

[0071] The second air inlet 320 is installed on the discharge cylinder 300 and is placed between the two second valves 310;

[0072] The second gas outlet 330 is installed on the discharge cylinder 300 and is placed between the two second valves 310;

[0073] The discharge barrel 300 is connected to the hydrogen crushing furnace barrel 100 via a sealing bearing and a sealing member.

[0074] When the powder in the hydrogen crushing furnace barrel 100 enters the discharge barrel 300, the second valve 310 close to the hydrogen crushing furnace barrel 100 is opened first. When the powder is placed between the two second valves 310, nitrogen is introduced through the second air inlet 320 to cool it again. The discharged hydrogen and nitrogen mixed gas is collected through the second air outlet 330. When the gas between the two second valves 310 is completely replaced with nitrogen, the second valve 310 away from the hydrogen crushing furnace barrel 100 is opened to discharge the powder, and then the valve is closed. The gas between the two second valves 310 is replaced with hydrogen through the second air inlet 320 and the second air outlet 330.

[0075] Embodiment 3:

[0076] like Figure 2 , Figure 3 As shown, the embodiment of the present application provides a rotary hydrogen crushing furnace. In addition to the above technical features, the shaft body 400 further includes:

[0077] The roller body 410 is placed in the hydrogen crushing furnace barrel 100;

[0078] The bracket 420 is connected between the roller body 410 and the shaft body 400;

[0079] The outer surface of the roller body 410 is provided with a threaded portion 411 , the shaft body 400 is provided with a conveying hole 430 , the bracket 420 is provided with a conveying channel 421 connected to the conveying hole 430 , and the roller body 410 is provided with a cavity 412 connected to the conveying channel 421 .

[0080] The roller body 410 is installed on the shaft body 400 through the bracket 420. When the hydrogen crushing furnace barrel body 100 is driven to rotate by the driving device, the roller body 410 acts on the material to pre-crush the material. The crushing effect of the roller body 410 is improved by the threaded portion 411. The coolant is connected through the conveying hole 430, the conveying channel 421, and the cavity 412, so that the coolant can cool the material in the hydrogen crushing furnace barrel body 100. The roller body 410 is installed at one end close to the feeding cylinder 200.

[0081] Embodiment 4:

[0082] like Figure 3 , Figure 4 As shown, the embodiment of the present application provides a rotary hydrogen crushing furnace. In addition to the above technical features, the shaft body 400 further includes:

[0083] Two gas delivery channels 440 are provided and their axes are parallel to the axis of the shaft body 400;

[0084] The gas delivery hole 441 is connected to the gas delivery channel 440 .

[0085] Hydrogen is delivered to the hydrogen crushing furnace barrel 100 through the gas delivery channel 440 and the gas delivery hole 441 to maintain the amount of hydrogen in the hydrogen crushing furnace barrel 100 and ensure the crushing of powder.

[0086] Embodiment 5:

[0087] like Figure 2 As shown, an embodiment of the present application provides a rotary hydrogen crushing furnace. In addition to the above technical features, the hydrogen crushing furnace barrel 100 is further provided with a plurality of filter screens 600 .

[0088] The filter 600 is provided to allow powders of the appropriate particle size to pass through and to intercept large particles of powders, thereby preventing the large particles of powders from affecting subsequent processing. The filter 600 is installed between the shaft 400 and the inner wall surface of the hydrogen crushing furnace barrel 100 .

[0089] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes 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 one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0090] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A rotary hydrogen crushing furnace, characterized in that: include: Hydrogen crushing furnace barrel (100); A feed cylinder (200) is installed at one end of the hydrogen crushing furnace barrel (100); A discharge barrel (300) is installed at the other end of the hydrogen crushing furnace barrel (100); The shaft (400) penetrates through the hydrogen crushing furnace barrel (100) and is movably connected to the feed barrel (200) and the discharge barrel (300); The cooling mechanism (500) comprises a cooling sleeve (510) sleeved on the hydrogen crushing furnace barrel (100); A cooling cavity (520) is provided between the cooling sleeve (510) and the hydrogen crushing furnace barrel (100), the cooling cavity (520) is filled with coolant, and the cooling sleeve (510) is provided with a liquid inlet pipe (530) and a liquid outlet pipe (540).

2. The rotary hydrogen crushing furnace according to claim 1, characterized in that: The outer wall surface of the hydrogen crushing furnace barrel (100) is provided with heat dissipation fins (550).

3. The rotary hydrogen crushing furnace according to claim 1, characterized in that: The feeding cylinder (200) comprises: Two first valves (210) are provided and installed on the feeding cylinder (200); A first air inlet (220) is installed on the feed cylinder (200) and is placed between the two first valves (210); A first gas outlet (230) is installed on the feed cylinder (200) and is disposed between the two first valves (210); The feed cylinder (200) and the hydrogen crushing furnace barrel (100) are connected via a sealing bearing and a sealing member.

4. The rotary hydrogen crushing furnace according to claim 1, characterized in that: The discharging cylinder (300) comprises: Two second valves (310) are provided and installed on the discharge cylinder (300); A second air inlet (320) is installed on the discharge cylinder (300) and is placed between the two second valves (310); A second air outlet (330) is installed on the discharge cylinder (300) and is placed between the two second valves (310); The discharge barrel (300) is connected to the hydrogen crushing furnace barrel (100) via a sealing bearing and a sealing member.

5. The rotary hydrogen crushing furnace according to claim 1, characterized in that: The shaft body (400) comprises: The roller body (410) is placed in the barrel body (100) of the hydrogen crushing furnace; A bracket (420) connected between the roller body (410) and the shaft body (400); The outer surface of the roller body (410) is provided with a threaded portion (411), the shaft body (400) is provided with a conveying hole (430), the bracket (420) is provided with a conveying channel (421) connected to the conveying hole (430), and the roller body (410) is provided with a cavity (412) connected to the conveying channel (421).

6. The rotary hydrogen crushing furnace according to claim 1, characterized in that: The shaft body (400) comprises: Two gas delivery channels (440) are provided and their axes are parallel to the axis of the shaft body (400); The gas delivery hole (441) is connected to the gas delivery channel (440).

7. The rotary hydrogen crushing furnace according to claim 1, characterized in that: The hydrogen crushing furnace barrel (100) is provided with a plurality of filter screens (600).

Images