A crushing device for hafnium oxide production

Abstract

This utility model relates to a crushing device for hafnium oxide production, including a crusher, a screening mechanism, and a return mechanism. The crusher has a feed inlet and a discharge outlet. The screening mechanism includes a receiving bin, which is suspended at the bottom of the crusher's discharge outlet by a tension spring and is arranged at an incline. A screen is installed at the upper end of the receiving bin, and a drive assembly for driving its swing is connected to one side of the receiving bin. The return mechanism includes a conveying pipe with a receiving port and a discharge port. The receiving port is located at the bottom of the lower end of the bin, and the discharge port is connected to the crusher's feed inlet. A conveying auger is installed inside the conveying pipe. This utility model sets a screening mechanism at the crusher's discharge outlet to screen the crushed hafnium oxide. Particles that meet the size requirements are collected, while those that do not meet the requirements are returned to the crusher for secondary processing through the return mechanism until the requirements are met. Through multiple crushing operations, the hafnium oxide particles obtained are of consistent size.

Description

Technical Field

[0001] This utility model relates to the field of hafnium oxide processing technology, and in particular to a crushing device for hafnium oxide production. Background Technology

[0002] Hafnium oxide possesses properties such as high hardness, high wear resistance, high thermal stability, and high optical refractive index, and is widely used in ceramics, coatings, electronic materials, optical materials, refractory materials, and other fields.

[0003] The market prospects for high-purity hafnium oxide are broad. Currently, the main hafnium oxide purification process involves dissolving hafnium hydroxide in hydrochloric acid solution, adjusting the hafnium oxide concentration and acidity of the solution, crystallizing hafnium oxychloride, and then purifying the hafnium oxychloride through acid washing and recrystallization to obtain high-purity hafnium oxychloride product. Hafnium hydroxide is typically prepared using metallic hafnium and hafnium alloy waste as raw materials. The process involves dissolving in sulfuric acid solution, leaching in water, filtering, adding alkali to the filtrate to precipitate, washing the precipitate with water until near neutral, filtering, drying the filter cake, and crushing it to obtain the hafnium hydroxide raw material.

[0004] Because subsequent applications of hafnium oxide require strict particle size control during the crushing stage, it is necessary to precisely control the particle size during crushing to avoid inconsistent output sizes. Therefore, it is urgent to design a crushing device for hafnium oxide production that can control the precision. Utility Model Content

[0005] In order to overcome the shortcomings of the above-mentioned background technology, the present invention provides a crushing device for hafnium oxide production with controllable precision.

[0006] The technical solution is: a crushing device for hafnium oxide production, including a crusher, a screening mechanism and a return mechanism. The crusher has a feed inlet and a discharge outlet. The screening mechanism includes a receiving bin. The receiving bin is suspended at the bottom of the discharge outlet of the crusher by a tension spring and is arranged at an inclination. A screen is installed at the upper end of the receiving bin, and a drive assembly for driving its swing is connected to one side of the receiving bin.

[0007] The material return mechanism includes a conveying pipe with a receiving port and a discharge port. The receiving port is located at the bottom of the lower end of the silo, and the discharge port is connected to the feed port of the crusher. A conveying auger is installed inside the conveying pipe. The screened material is transferred from the lower end of the silo to the receiving port of the conveying pipe, and then re-enters the crusher through the discharge port for secondary crushing.

[0008] Furthermore, the receiving bin includes a fine material receiving bin and a screen frame. The screen frame is installed on the top of the fine material receiving bin, and the screen frame is provided with multiple mounting slots of different heights, in which the screen can be detachably installed.

[0009] Furthermore, the drive assembly includes a horizontal shaft mounted on the frame of the crusher. A turntable is coaxially mounted on the horizontal shaft. A connecting rod is provided between the turntable and the receiving bin. One end of the connecting rod is hinged to the receiving bin, and the other end is hinged to one side of the turntable at a position off-center from its center. The horizontal shaft is drive-connected to the roller shaft of the crusher.

[0010] Furthermore, the connecting rod includes an end and an adjusting part. The end has two parts, and threaded holes are respectively opened on the opposite side of the two ends along their length direction. The two ends of the adjusting part have external threads respectively, and the adjusting part is threadedly connected to the two ends.

[0011] Furthermore, the crusher includes a frame, a chamber, and two rollers. The chamber is mounted on the frame, with the feed inlet located at the top of the chamber and the discharge outlet located at the bottom of the chamber. The two rollers are located inside the chamber and are driven by a gear set. A drive motor I connected to one of the rollers is located outside the chamber. Several blades are evenly arranged along the axial direction on the sidewalls of the two rollers, and the blades on the two rollers are arranged in a cross pattern. Several toothed plates that intersect with the blades on the rollers are fixed on the inner sidewall of the chamber.

[0012] Furthermore, it also includes a dust removal component. A side opening is provided on one side of the top of the machine compartment, and a dust removal box is installed at the side opening. One end of the dust removal box is connected to a fan, and a dust collection bag is installed at the drain port of the dust removal box.

[0013] The beneficial effects of this utility model are as follows: By setting a screening mechanism at the discharge port of the crusher, the crushed hafnium oxide is screened. Those that meet the particle size requirements are collected, while those that do not meet the requirements are returned to the crusher for secondary processing through a return mechanism until the requirements are met. Through multiple crushing processes, the hafnium oxide particles obtained are of consistent size. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the screening mechanism and drive assembly of this utility model.

[0016] Figure 3 This is a schematic diagram of the material return mechanism of this utility model.

[0017] Figure 4 This is a cross-sectional view of the crusher of this utility model.

[0018] Reference numerals: 1_Crusher, 11_Frame, 12_Bucket, 13_Roller, 14_Gear Set, 15_Drive Motor I, 131_Cutter Plate, 121_Jaw Plate, 2_Screening Mechanism, 21_Receiving Bin, 211_Fine Material Receiving Bin, 212_Screen Frame, 213_Mounting Groove, 22_Tension Spring, 23_Screen, 24_Ear Plate, 3_Return Material Mechanism, 31_Conveying Pipe, 311_Receiving Plate 312_Discharge port, 32_Screw conveyor, 33_Drive motor II, 4_Drive assembly, 41_Horizontal shaft, 42_Turntable, 43_Connecting rod, 431_End, 432_Adjusting part, 44_Connecting plate, 5_Dust removal component, 51_Dust removal box, 52_Fan, 53_Dust collection bag, 6_First helical gear, 61_Second helical gear, 62_Pulley assembly, 63_Large gear, 64_Small gear. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-4 The crushing device for hafnium oxide production shown includes a crusher 1, a screening mechanism 2, and a return material mechanism 3. The crusher 1 has a feed inlet and a discharge outlet. After the hafnium oxide filter cake is crushed by the crusher 1, it is screened by the screening mechanism 2. The crushed material that does not meet the particle size requirements enters the return material mechanism 3 and is fed back into the crusher 1 for secondary crushing until the particle size meets the requirements.

[0021] refer to Figure 1 and Figure 4 The crusher 1 includes a frame 11, a chamber 12, and two rollers 13. The chamber 12 is mounted on the frame 11, with the feed inlet located at the top and the discharge outlet at the bottom. The two rollers 13 are located inside the chamber 12 and are driven by a gear set 14. Normally, the two rollers 13 rotate inwards; however, they may also rotate alternately inwards and outwards. A drive motor I 15, connected to one of the rollers 13, is located outside the chamber 12. The drive motor I 15 serves as the power source for the crusher 1. The power source consists of two rollers 13 with several blades 131 evenly arranged along the axial direction on their sidewalls. The blades 131 on the two rollers 13 are arranged in a cross pattern. The material is crushed by the shearing force between the cross blades 131. In addition, several toothed plates 121 that intersect with the blades 131 on the rollers 13 are fixed on the inner sidewall of the machine chamber 12. When the two rollers 13 rotate alternately inward and outward, the material can also be crushed by the action of the blades 131 and the toothed plates 121. The crushed hafnium oxide is transferred to the screening mechanism 2 through the discharge port.

[0022] Combination Figure 1 and Figure 2The screening mechanism 2 includes a receiving bin 21, which is suspended at the bottom of the discharge port of the crusher 1 by a tension spring 22 and is arranged at an incline. A screen 23 is installed at the upper end of the receiving bin 21. A drive assembly 4 for driving its swing is connected to one side of the receiving bin 21. Specifically, the receiving bin 21 includes a fine material receiving bin 211 and a screen frame 212. The screen frame 212 is installed on the top of the fine material receiving bin 211. Ear plates 24 are respectively arranged opposite to each other on the sides of the fine material receiving bin 211 and the screen frame 212. Bolts are installed on the ear plates 24. The screen frame 212 is provided with multiple mounting slots 213 of different heights. The screen 23 is detachably installed in the mounting slots 213. By installing multiple screens 23, the screening accuracy can be improved.

[0023] In addition, it should be noted that both the front end of the fine material receiving bin 211 and the screen frame 212 are formed with openings for unloading, and the openings on the fine material receiving bin 211 and the screen frame 212 face opposite directions, so that fine materials can be distinguished from coarse materials. Furthermore, the screen 23 is driven to swing by the drive component 4, thereby realizing the screening of chromium oxide fragments.

[0024] For details, please refer to the following: Figure 1 and Figure 2 The drive assembly 4 includes a horizontal shaft 41, a turntable 42, and a connecting rod 43. The horizontal shaft 41 is rotatably mounted on the frame 11 of the crusher 1. The turntable 42 is mounted on the horizontal shaft 41 and the two are coaxially arranged. The connecting rod 43 is arranged between the turntable 42 and the receiving bin 21. One end of the connecting rod 43 is hinged to the receiving bin 21, and the other end is hinged to a position off-center on one side of the turntable 42. The horizontal shaft 41 is connected to the roller shaft 13 of the crusher 1 for transmission.

[0025] In one specific embodiment, the connecting rod 43 includes two ends 431 and an adjusting part 432. The two ends 431 are respectively provided with threaded holes along their length on opposite sides. The two ends of the adjusting part 432 are respectively provided with external threads. The two ends 431 are connected by the adjusting part 432. The overall length of the connecting rod 43, which consists of the two ends 431 and the adjusting part 432, can be adjusted. The adjustment of the length of the connecting rod 43 can be used to fine-tune the swing amplitude of the docking hopper 21.

[0026] Specifically, a connecting plate 44 is installed at the bottom of the receiving bin 21. This connecting plate is hinged to one end 431, and the other end 431 is hinged to the turntable 42. A first helical gear 6 is coaxially mounted on the horizontal shaft 41, and a second helical gear 61 is mounted on the frame 11 via a rotating shaft. The first helical gear 6 and the second helical gear 61 mesh. A small gear 64 is coaxially mounted on one of the roller shafts 13 of the crusher 1, and a large gear 63 is mounted on one side of the machine compartment 12 via a rotating shaft. The small gear 64 and the large gear 63 are connected in a transmission relationship, and the transmission relationship between the small gear 64 and the large gear 63 can be adjusted. The large gear 63 and the second helical gear 61 are connected in a transmission relationship via a pulley group 62. The power of the drive assembly 4 comes from the crusher 1 itself, and no additional power mechanism is required. Through the cooperation of the drive assembly 4 and the tension spring 22, continuous and stable screening of the receiving bin 21 can be achieved. The screened fine material is collected, while the coarse screened material needs to be transported back to the crusher 1 for secondary processing via the return material mechanism 3.

[0027] refer to Figure 3 As shown, the return material mechanism 3 includes a conveying pipe 31 with a receiving port 311 and a discharge port 312. The receiving port 311 is located at the bottom of the receiving bin 21, specifically at the bottom of the opening of the screen frame 212, and is used to receive coarse material. The discharge port 312 of the return material mechanism 3 is connected to the feed port of the crusher 1. The conveying pipe 31 is equipped with a conveying auger 32. The auger 32 is driven by a drive motor II 33. When the coarse material enters the conveying pipe 31, it is lifted to a certain height by the auger 32 and discharged into the crusher 1 for secondary crushing.

[0028] Since the hafnium oxide crushing process generates dust, a dust collection component 5 is installed on the top of the machine compartment 12 to reduce harm to the human body. A side opening is provided on one side of the top of the machine compartment 12, and a dust collection box 51 is installed at the side opening. One end of the dust collection box 51 is connected to a fan 52, and a dust collection bag 53 is installed at the drain port of the dust collection box 51. After the fan 52 is started, the dust is sucked into the dust collection bag 53 through negative pressure, reducing pollution to the production workshop.

[0029] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A crushing device for hafnium oxide production, characterized by, The system includes a crusher (1), a screening mechanism (2), and a return mechanism (3). The crusher (1) has a feed inlet and a discharge outlet. The screening mechanism (2) includes a receiving bin (21). The receiving bin (21) is suspended at the bottom of the discharge outlet of the crusher (1) by a tension spring (22) and is arranged at an inclination. A screen (23) is installed at the upper end of the receiving bin (21). A drive assembly (4) for driving the receiving bin (21) to swing is connected to one side of the receiving bin (21). The return material mechanism (3) includes a conveying pipe (31) with a receiving port (311) and a discharge port (312). The receiving port (311) is located at the bottom of the lower end of the silo. The discharge port (312) is connected to the feed port of the crusher (1). A conveying auger (32) is provided in the conveying pipe (31). The screened material is transferred from the lower end of the silo to the receiving port (311) of the conveying pipe (31) and then re-enters the crusher (1) through the discharge port (312) for secondary crushing.

2. The crushing apparatus for producing hafnium oxide according to claim 1, wherein The receiving bin (21) includes a fine material receiving bin (211) and a screen frame (212). The screen frame (212) is installed on the top of the fine material receiving bin (211). The screen frame (212) is provided with multiple mounting slots (213) of different heights. The screen (23) is detachably installed in the mounting slot (213).

3. The crushing device for producing hafnium oxide according to claim 1 or 2, characterized by The drive assembly (4) includes a horizontal shaft (41) which is mounted on the frame of the crusher (1). A turntable (42) is coaxially mounted on the horizontal shaft (41). A connecting rod (43) is provided between the turntable (42) and the receiving bin (21). One end of the connecting rod (43) is hinged to the receiving bin (21), and the other end is hinged to a position off-center on one side of the turntable (42). The horizontal shaft (41) is connected to the roller shaft of the crusher (1) via a drive.

4. The crushing apparatus for producing hafnium oxide according to claim 3, wherein The connecting rod (43) includes an end (431) and an adjusting part (432). The end (431) has two parts, and threaded holes are respectively opened on the opposite side of the two ends (431) along its length direction. The two ends of the adjusting part (432) have external threads respectively, and the adjusting part (432) is threadedly connected to the two ends (431) respectively.

5. The crushing device for producing hafnium oxide according to claim 4, characterized by The crusher (1) includes a frame (11), a chamber (12) and two rollers (13). The chamber (12) is mounted on the frame (11). The feed inlet is located at the top of the chamber (12) and the discharge outlet is located at the bottom of the chamber (12). The two rollers (13) are located inside the chamber (12) and are driven by a gear set (14). The outside of the chamber (12) is provided with a drive motor I (15) connected to one of the rollers (13). Several blades (131) are evenly arranged on the sidewalls of the two rollers (13) along the axial direction. The blades (131) on the two rollers (13) are arranged in a cross pattern. Several toothed plates (121) that intersect with the blades (131) on the rollers (13) are fixed on the inner sidewall of the chamber (12).

6. The crushing apparatus for producing hafnium oxide according to claim 5, wherein Also include dust removal components (5), the top of the warehouse (12) one side is provided with side through hole, the side through hole is installed with dust removal box (51), dust removal box (51) one end is connected with fan (52), dust removal box (51) is installed with dust bag (53) in the pollution outlet.

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