Double-layer water-cooling crushing device for neodymium iron boron vacuum rapid hardening furnace

Abstract

A double-layer water-cooling crushing device for a neodymium iron boron vacuum rapid hardening furnace relates to the field of neodymium iron boron vacuum rapid hardening furnaces, and comprises a water-cooling hopper, the water-cooling hopper is of a double-layer structure with a cavity, the water-cooling hopper comprises an upper part and a lower part which are communicated, the upper part of the water-cooling hopper is a big-end-up trapezoidal section, and the lower part of the water-cooling hopper is a square section; a water return pipe is communicated with an upper cavity of the water-cooling hopper, a lower port of the water return pipe is connected with a water outlet of an external water-cooling circulating device, a water inlet pipe opening is communicated with a lower cavity of the water-cooling hopper, and the water inlet pipe opening is connected with a water inlet of the external water-cooling circulating device. A first-stage crushing device is arranged at the lower part of the trapezoidal section, a second-stage crushing device is arranged in the square section, and a driving assembly connected with the first-stage crushing device and the second-stage crushing device is arranged outside the lower part of the water-cooling hopper; the device is simple, reasonable and compact in structure, and the product quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of NdFeB vacuum rapid solidification furnaces, in particular to a double-layer water-cooling crushing device used for NdFeB vacuum rapid solidification furnaces. Background Art

[0002] At present, the new NdFeB vacuum rapid solidification furnace has cancelled the furnace collecting mechanism and replaced it with a lower collecting tank structure. All NdFeB vacuum rapid solidification furnace castings are collected by the collecting tank under the furnace body. Since the initial NdFeB castings are strip-shaped structures, they must be broken into pieces before they can fall into the collecting tank. Therefore, a crushing device must be added to the furnace to complete the entire process. Since the temperature of the NdFeB castings formed by the rapid cooling copper roller is relatively high, they need to be cooled after crushing. The crushing device hoppers on the existing market are all coarse crushing, which is insufficient. The cooling device installed in the hopper has a small area and uneven cooling, which affects the performance of the NdFeB castings after cooling. If a special cooling mechanism is added, it will not only seriously occupy the production space, but also require the overall optimization and upgrading of the existing equipment, causing great waste to the production enterprises. Summary of the invention

[0003] In order to overcome the deficiencies in the background technology, the utility model discloses a double-layer water-cooled crushing device for a NdFeB vacuum rapid solidification furnace.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A double-layer water-cooled crushing device for a NdFeB vacuum rapid solidification furnace comprises a water-cooled hopper, which is arranged as a double-layer structure with a cavity, and the water-cooled hopper comprises two parts connected up and down, the upper part is a trapezoidal section with a larger upper part and a smaller lower part, and the lower part is a square section; a return water pipe is connected to the upper cavity of the water-cooled hopper, and the lower end of the return water pipe is connected to the water outlet of an external water-cooled circulation device; a water inlet pipe is connected to the lower cavity of the water-cooled hopper, and the water inlet pipe is connected to the water inlet of the external water-cooled circulation device; a primary crushing device is arranged at the lower part of the trapezoidal section, a secondary crushing device is arranged in the square section, and a driving component connected to the primary crushing device and the secondary crushing device is arranged outside the lower part of the water-cooled hopper.

[0006] The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace, the first-level crushing device includes a support, an upper bearing seat and a transmission shaft, two supports are provided, respectively fixed on the two side walls outside the water-cooled hopper, the upper bearing seats are respectively fixed on the upper part of the support, a transmission shaft is provided between the two bearing seats, a sleeve is fixed in the middle of the transmission shaft, and a plurality of cross-shaped hammers are evenly distributed along the length and circumferential direction of the sleeve; the second-level crushing device includes a lower bearing seat, a driven shaft and a driving shaft, two lower bearing seats are provided on both sides of the lower part of the support, the driven shaft and the driving shaft are respectively connected between the two corresponding lower bearing seats at the lower part of the supports on both sides, and transmission rollers are installed on the driven shaft and the driving shaft.

[0007] The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace, the driving assembly includes an external motor, an upper sprocket fixed to the outside of the right side of the transmission shaft, and a lower sprocket fixed to the outside of the right side of the driving shaft. The diameter of the upper sprocket is larger than the diameter of the lower sprocket, and a chain is connected between the upper sprocket and the lower sprocket. A driving wheel is fixed on the left side of the driving shaft, and the driving wheel is meshed with a driven wheel fixed on the left side of the driven shaft. The output end of the external motor is fixedly connected to the left end of the driving shaft.

[0008] The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace has mounting holes evenly distributed on the double-layer wall of the water-cooled hopper, and hopper reinforcement ribs are sealed and fixed in the mounting holes.

[0009] The double-layer water-cooled crushing device used in the NdFeB vacuum rapid solidification furnace is provided with a rotatably connected front end shield on the upper opening side of the water-cooled hopper.

[0010] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0011] The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace described in the utility model, by setting the water-cooled hopper as a double-layer structure with a cavity, cooling water is introduced into the cavity, so that the entire water-cooled hopper forms a cold cavity, and the processes of falling and crushing of the NdFeB casting are all completed in the cold cavity, thereby improving the cooling speed and product quality of the NdFeB casting, and crushing the NdFeB casting twice by a primary crushing device and a secondary crushing device, so that the NdFeB casting is fully crushed and meets the crushing process requirements; the utility model has a simple structure, is reasonably compact, and effectively improves the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the external structure of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the drive assembly of the utility model.

[0015] Figure 4 It is a structural schematic diagram of the primary crushing device of the utility model.

[0016] In the figure: 1. Rapidly cooled copper roller; 2. Front end shield; 3. Water-cooled hopper; 4. Hopper reinforcement rib; 5. Return pipe; 6. Water inlet pipe; 7. Primary crushing device; 8. Secondary crushing device; 9. Mounting hole; 10. Upper bearing seat; 11. Support; 12. Driven wheel; 13. Driving wheel; 14. Upper sprocket; 15. Chain; 16. Lower sprocket; 17. Transmission shaft; 18. Hammer; 19. Sleeve; 20. Lower bearing seat; 21. Driving shaft; 22. Driven shaft. DETAILED DESCRIPTION

[0017] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0018] Combined with Figure 1-4The double-layer water-cooled crushing device for the NdFeB vacuum quick-setting furnace comprises a water-cooled hopper 3, which is arranged as a double-layer structure with a cavity. The water-cooled hopper 3 comprises two parts connected up and down, the upper part of which is a trapezoidal section with a larger upper part and a smaller lower part, and the lower part is a square section; a return water pipe 5 is connected to the upper cavity of the water-cooled hopper 3, and the lower end of the return water pipe 5 is connected to the water outlet of the external water-cooled circulation device; a water inlet pipe port 6 is connected to the lower cavity of the water-cooled hopper 3, and the water inlet pipe port 6 is connected to the external water-cooled circulation device. The first crushing device 7 is provided at the lower part of the trapezoidal section, the second crushing device 8 is provided in the square section, and the driving assembly connected with the first crushing device 7 and the second crushing device 8 is provided outside the lower part of the water-cooled hopper 3; the first crushing device 7 includes a support 11, an upper bearing seat 10 and a transmission shaft 17, and two supports 11 are provided, which are respectively fixed on the two side walls outside the water-cooled hopper 3, and the upper bearing seats 10 are respectively fixed on the upper part of the supports 11, and a drive shaft 17 is provided between the two bearing seats 10. A transmission shaft 17 is arranged, a sleeve 19 is fixed in the middle of the transmission shaft 17, and a plurality of cross-shaped hammers 18 are evenly distributed along the length and circumferential direction of the sleeve 19; the secondary crushing device 8 includes a lower bearing seat 20, a driven shaft 22 and a driving shaft 21, two lower bearing seats 20 are arranged on both sides of the lower part of the support 11, and the driven shaft 22 and the driving shaft 21 are connected between the two corresponding lower bearing seats 20 at the lower part of the supports 11 on both sides, and transmission hammers 18 are installed on the driven shaft 22 and the driving shaft 21. The driving assembly includes an external motor, an upper sprocket 14 fixed to the outside of the right side of the transmission shaft 17, and a lower sprocket 16 fixed to the outside of the right side of the driving shaft 21. The diameter of the upper sprocket 14 is larger than the diameter of the lower sprocket 16, and a chain is connected between the upper sprocket 14 and the lower sprocket 16. A driving wheel 13 is fixed to the left side of the driving shaft 21, and the driving wheel 13 is meshed with the driven wheel 12 fixed to the left side of the driven shaft 22. The output end of the external motor is fixedly connected to the left end of the driving shaft 21.

[0019] Furthermore, mounting holes 9 are evenly distributed on the double-layer wall of the water-cooled hopper 3 , and hopper reinforcement ribs 4 are sealed and fixed in the mounting holes 9 .

[0020] Furthermore, a rotatably connected front end shield 2 is provided on the upper opening side of the water-cooling hopper 3 .

[0021] In the double-layer water-cooled crushing device for the NdFeB vacuum quick-setting furnace of the utility model, when in use, the strip-shaped NdFeB casting sheet falling from the quenching copper roller 1 first enters the water-cooling hopper 3. The quenching copper roller 1 is a prior art and is not within the protection range of the double-layer water-cooled crushing device. Figure 1As shown by the arrow at A in the figure, the falling strip-shaped NdFeB casting sheet slides into the crushing range of the primary crushing device 7, and is initially crushed by the primary crushing device 7. During the crushing process of the primary crushing device 7, the initially crushed NdFeB casting sheet is thrown on the inclined water-cooled inner wall of the hopper, and then slides to the secondary crushing device 8. After being crushed by the primary crushing device 7, it becomes NdFeB fragments of appropriate size and falls into the collecting tank at the bottom of the water-cooled hopper 3. During the whole crushing process, the NdFeB casting sheet is always in the cold cavity composed of the double-layer water-cooled hopper, and the NdFeB casting sheet is in contact with the water-cooled wall of the hopper in most of the process, which can greatly improve the cooling speed of the NdFeB casting sheet. degree, thereby improving the product quality of NdFeB castings; the primary crushing device 7 and the secondary crushing device 8 are driven by an external driving component. First, the external motor is turned on to drive the driving shaft 21 to rotate, and the driving wheel 13 on the driving shaft 21 is meshed with the driven wheel 12 on the driven shaft 22, so that the driven shaft 22 and the transmission roller on the driving shaft 21 complete the secondary crushing; at the same time, the lower sprocket 16 on the driving shaft 21 drives the upper sprocket 14 to rotate through the chain 15, and the upper sprocket 14 drives the transmission shaft 17 to rotate. When the transmission shaft 17 rotates, the cross-shaped hammer 18 arranged outside the sleeve 19 on the transmission shaft 17 completes the primary crushing of the falling NdFeB casting.

[0022] The parts not described in detail in this utility model are prior art.

[0023] The embodiments selected in this article for the purpose of disclosing the invention of the utility model are currently considered to be suitable, but it should be understood that the utility model is intended to include all changes and improvements of the embodiments that belong to the scope of the present concept and utility model.

Claims

1. A double-layer water-cooled crushing device for a NdFeB vacuum rapid solidification furnace, comprising a water-cooled hopper, characterized in that: The water-cooling hopper is configured as a double-layer structure with a cavity, and the water-cooling hopper includes two parts connected up and down, the upper part of which is a trapezoidal section that is larger at the top and smaller at the bottom, and the lower part is a square section; a return water pipe is connected to the upper cavity of the water-cooling hopper, and the lower end of the return water pipe is connected to the water outlet of an external water-cooling circulation device; a water inlet pipe port is connected to the lower cavity of the water-cooling hopper, and the water inlet pipe port is connected to the water inlet of the external water-cooling circulation device; a primary crushing device is provided at the lower part of the trapezoidal section, a secondary crushing device is provided in the square section, and a driving assembly connected to the primary crushing device and the secondary crushing device is provided outside the lower part of the water-cooling hopper.

2. The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace according to claim 1 is characterized in that: The first-stage crushing device includes a support, an upper bearing seat and a transmission shaft. There are two supports, which are respectively fixed on the two side walls of the outside of the water-cooled hopper. The upper bearing seats are respectively fixed on the upper part of the supports. A transmission shaft is arranged between the two bearing seats. A sleeve is fixed in the middle of the transmission shaft. A plurality of cross-shaped hammers are evenly distributed along the length and circumferential direction of the sleeve. The second-stage crushing device includes a lower bearing seat, a driven shaft and a driving shaft. Two lower bearing seats are arranged on both sides of the lower part of the support. The driven shaft and the driving shaft are respectively connected between the two corresponding lower bearing seats at the lower part of the supports on both sides, and transmission rollers are installed on the driven shaft and the driving shaft.

3. The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace according to claim 1 is characterized in that: The driving assembly includes an external motor, an upper sprocket fixed to the outside of the right side of the transmission shaft, and a lower sprocket fixed to the outside of the right side of the driving shaft. The diameter of the upper sprocket is larger than the diameter of the lower sprocket, and a chain is connected between the upper sprocket and the lower sprocket. A driving wheel is fixed on the left side of the driving shaft, and the driving wheel is meshed with a driven wheel fixed on the left side of the driven shaft. The output end of the external motor is fixedly connected to the left end of the driving shaft.

4. The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace according to claim 1 is characterized in that: Mounting holes are evenly distributed on the double-layer wall of the water-cooled hopper, and hopper reinforcing ribs are sealed and fixed in the mounting holes.

5. The double-layer water-cooled crushing device for the NdFeB vacuum rapid solidification furnace according to claim 1 is characterized in that: A rotatably connected front end shield is arranged on one side of the upper opening of the water-cooling hopper.

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