Cerium oxide airflow crushing device and production process

Abstract

The invention relates to the technical field of smashing, and discloses a cerium oxide airflow smashing device and a production technology.The cerium oxide airflow smashing device comprises a base, four supporting legs arranged at equal angles are arranged on the base, a first tank is connected to the supporting legs, and an air injection mechanism used for spraying high-pressure airflow and driving materials to collide with one another to be smashed is installed in the first tank; a feeding pipeline positioned above the air injection mechanism is mounted on the first tank body; the inner wall of the first tank body is provided with four cooling assemblies which are arranged at equal angles, the upper port of the first tank body is connected with a second tank body through a flange, the second tank body is provided with a grading mechanism and a discharging pipeline corresponding to the grading mechanism, and the upper port of the second tank body is provided with a top cover; according to the device, efficient production is achieved through multi-dimensional innovation, a double-layer S-shaped cooling flow channel dissipates heat quickly, and high-temperature agglomeration of materials is avoided so as to guarantee stable physicochemical properties; and the four groups of opposed nozzles form a vortex field, so that the particle size refining rate of the material is more than 90%, and the energy consumption is reduced by 35%.

Description

Technical Field

[0001] The invention relates to the field of pulverization technology, in particular to a cerium oxide airflow pulverization device and a production process. Background Art

[0002] As an important rare earth functional material, the crystal structure and chemical purity of cerium oxide directly determine its application performance in high-end fields. For example, cubic phase cerium oxide is the core component of fuel cell catalysts and automobile exhaust purifiers because of its excellent oxygen storage and release capacity; and electronic grade cerium oxide (purity> 99.99%) is the key raw material for the preparation of high-precision optical coatings and semiconductor polishing liquids. Airflow pulverization technology has become the mainstream method for fine processing of cerium oxide because it can achieve nano-level particle size control and avoid mechanical pollution, but there are still significant technical bottlenecks in crystal maintenance and purity control. Traditional airflow pulverization devices mainly control the temperature of the pulverization chamber through a water-cooled interlayer. Its structure usually includes an external circulating water pipe in contact with the wall of the chamber, and uses the principle of heat conduction to reduce local temperature rise. However, this method can only control the surface temperature of the chamber and cannot solve the problem of heat accumulation in the central area of the pulverization chamber. The instantaneous heat generated by high-speed airflow friction and particle collision can cause the local temperature to exceed 300°C, causing the cerium oxide to undergo a crystal transformation (such as the transformation from cubic phase to orthorhombic phase), and the crystal transformation rate increases with the processing time.

[0003] Therefore, how to achieve precise control of the temperature field during the crushing process has become a technical problem that needs to be urgently solved in the cerium oxide airflow crushing device. Summary of the invention

[0004] The purpose of the present invention is to provide a cerium oxide airflow pulverization device and a production process to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the present invention is as follows: a cerium oxide airflow pulverizing device, comprising a base, the base is provided with four equiangularly arranged supporting legs, the supporting legs are provided with a first tank body, the first tank body is provided with a jet mechanism for ejecting high-pressure airflow and driving materials to collide and crush each other, and the first tank body is provided with a feed pipe located above the jet mechanism; the inner wall of the first tank body is provided with cooling components arranged at equal angles, and there is an installation gap between adjacent cooling components, the cooling component includes an arc-shaped cooling plate, the top surface of the cooling plate is provided with two layers of refrigerant flow channels arranged at equal angles, the two layers of refrigerant flow channel ports are connected by a U-shaped tube, and the U-shaped tube located at the edge is connected with a liquid inlet pipe and a liquid outlet pipe extending to the outside of the first tank body; the upper port of the first tank body is provided with a second tank body, the second tank body is provided with a grading mechanism and a discharge pipe corresponding to the grading mechanism, and the upper port of the second tank body is provided with a top cover.

[0006] The first tank body is of a barrel-shaped structure, and the second tank body is of a tubular structure. The base is a rectangular frame, and the top surface of the base has a vertically penetrating opening, and the side surface has a laterally penetrating opening. Three equally angled pedestals are connected to the cooling tray, and a third nozzle for purging the wall-hanging materials in the first tank body and the second tank body is installed on the pedestals; the third nozzle includes a T-shaped tubular outer pipe body provided on the pedestal, a nozzle with a funnel-shaped air guide opening at the center is fixed to the upper port of the outer pipe body by screws, two symmetrically arranged support blocks are fixed to the outer pipe body by screws, an inner pipe body is fixedly connected with a gap between the two support blocks, a cone-shaped sliding core adapted to the air guide opening is slidably connected to the chute on the upper end surface of the inner pipe body; a guide sleeve is fixed in the middle of the inner pipe body, a guide post with an upper end connected to the sliding core is slidably connected to the guide sleeve, a first air inlet hole and a second air inlet hole are opened in the air injection cavity at the lower end of the inner pipe body, a push air pipe is installed on the first air inlet hole, and a pressure air pipe is installed on the second air inlet hole; a sealing air cover slidably adapted to the air injection cavity is connected to the side wall of the guide post, a step groove for limiting the upward movement of the sealing air cover is provided in the air injection cavity, a guide seat slidably connected to the guide post is fixed to the lower port of the inner pipe body by screws, and a tail cap is connected to the guide seat. Support rods arranged at equal angles are connected to the inner bottom surface of the first tank body, a sleeve located at the center of the first tank body is connected to the support rods, and a third nozzle is installed on the sleeve; a ball bearing is installed on the side wall of the sleeve, two symmetrically arranged bases are connected to the outer ring of the ball bearing, two groups of first connecting rods and second connecting rods are rotatably connected to the bases, an arc-shaped air guide cover is rotatably connected to the free ends of each group of first connecting rods and second connecting rods, and an inverted V-shaped air flow channel is formed after the two air guide covers are buckled; a convex rod is connected to the side wall of the second connecting rod, a guide rail is installed in the middle of the base, a slider is slidably connected to the guide rail, a driving rod with two symmetrically arranged notch grooves is connected to the slider, the notch grooves are slidably adapted to the convex rod, and a telescopic rod connected to the base is connected to the driving rod. The beneficial effects of the present invention are as follows: The device realizes efficient production through multi-dimensional innovation, and the double-layer serpentine cooling flow channel quickly dissipates heat, avoiding high-temperature agglomeration of materials to ensure stable physical and chemical properties; Four groups of counter-jet nozzles form a vortex field, so that the particle size refinement rate of the materials exceeds 90% and the energy consumption is reduced by 35%; The double-layer baffle strips are combined with the precise docking structure to achieve a D50 particle size fluctuation of ≤±2μm and a classification efficiency improvement of 40%; The shaking mechanism is combined with nozzle purging to reduce the caking rate by 95% and achieve dead-angle-free cleaning; The spiral air curtain and the sealing structure reduce wear by 60% and extend the service life of components by 2 times, and the air pressure fluctuation is controlled within ≤5%. The device has the advantages of high-efficiency crushing, precise classification, stable temperature control and self-cleaning and anti-caking, and the particle size uniformity of the finished product reaches ISO Class 1 level. Brief Description of the Drawings

[0007] Figure 1 It is a front view structural schematic diagram of the present application.

[0008] Figure 2 It is a front view sectional structural schematic diagram of the present application.

[0009] Figure 3 It is a three-dimensional structural schematic diagram of the cooling assembly.

[0010] Figure 4 It is a front view sectional structural schematic diagram of the cooling assembly.

[0011] Figure 5 It is a top view sectional structural schematic diagram of the cooling assembly.

[0012] Figure 6 It is a three-dimensional structural schematic diagram of the jetting mechanism.

[0013] Figure 7 It is a side view sectional structural schematic diagram of the first retaining bar.

[0014] Figure 8 It is a three-dimensional structural schematic diagram of the end cap.

[0015] Figure 9 It is a three-dimensional structural schematic diagram of the pressure ring.

[0016] Figure 10 It is a top view sectional structural schematic diagram of the seventh gas pipeline.

[0017] Figure 11 It is a front view sectional structural schematic diagram of the valve body.

[0018] Figure 12 It is a side view sectional structural schematic diagram of the valve body.

[0019] Figure 13 It is a three-dimensional structural schematic diagram of the valve body.

[0020] Figure 14 It is a front view sectional structural schematic diagram of the housing.

[0021] Figure 15 It is a front view sectional structural schematic diagram of the shaking mechanism.

[0022] Figure 16 It is a three-dimensional structural schematic diagram of the carrier plate.

[0023] Figure 17 It is a front view sectional structural schematic diagram of the ball head seat.

[0024] Figure 18 It is a front view structural schematic diagram of the first compression spring.

[0025] Figure 19It is a schematic diagram of the front view cross-section structure of the corrugated pipe.

[0026] Figure 20 It is a schematic diagram of the front view cross-section structure of the rubber pipe.

[0027] Figure 21 It is a schematic diagram of the front view structure of the cooling plate.

[0028] Figure 22 It is a schematic diagram of the top view cross-section structure of the cooling plate.

[0029] Figure 23 It is a three-dimensional structure schematic diagram of the third nozzle.

[0030] Figure 24 It is a schematic diagram of the front view cross-section structure of the third nozzle.

[0031] Figure 25 It is a schematic diagram of the side view cross-section structure of the third nozzle.

[0032] Figure 26 It is a schematic diagram of the front view cross-section structure of the push air pipe.

[0033] Figure 27 It is a schematic diagram of the front view cross-section structure of the support rod.

[0034] Figure 28 It is a schematic diagram of the front view cross-section structure of the flow deflector.

[0035] Figure 29 It is a three-dimensional structure schematic diagram of the flow deflector.

[0036] Figure 30 It is a flow chart of the production process.

[0037] In the figure: 1, base; 2, supporting feet; 3, first tank body; 4, jet mechanism; 5, feed pipeline; 6, cooling assembly; 7, cooling plate; 8, refrigerant flow channel; 9, U-shaped pipe; 10, arc-shaped flow channel; 11, liquid inlet pipe; 12, liquid outlet pipe; 13, second tank body; 14, grading mechanism; 15, discharge pipeline; 16, top cover; 17, first gas transmission pipe; 18, first nozzle; 19, second gas transmission pipe; 20, third gas transmission pipe; 21, fourth gas transmission pipe; 22, fifth gas transmission pipe; 23, sixth gas transmission pipe; 24, pressure gauge; 25, flow meter; 26, control valve; 27, first branch pipe; 28, second branch pipe; 29, drive motor; 30, sealing bearing; 31, shaft sleeve; 32, rotating plate; 33, first stop bar; 34, circular ring; 35, flange; 36, second stop bar; 37, manhole; 38, end cover; 39, inspection opening; 40, pressing ring; 41, pressing rod; 42, screw rod; 43, rocker; 44, gland; 45, buckle; 46, seventh gas transmission pipe; 47, second nozzle; 48, pulse mechanism; 49, valve body; 50, valve cavity; 51, piston cavity; 52, piston cylinder; 53, pressing block; 54, return spring; 55, first bearing seat; 56, first rotating shaft; 57, first motor; 58, cam; 59, shaft rod; 60, lever; 61, contact; 62, housing; 63, main gas cavity; 64, sliding cavity; 65, air sealing cap; 66, compression spring; 67, bypass gas cavity; 68, third branch pipe; 69, cover plate; 70, shaking mechanism; 71, second rotating shaft; 72, second motor; 73, eccentric seat; 74, eccentric shaft; 75, spherical head; 76, ball head seat; 77, spherical groove; 78, conical groove; 79, carrier plate; 80, first compression spring; 81, spring seat; 82, bellows; 83, first flange ring; 84, second flange ring; 85, first retaining ring; 86, first fixing ring; 87, rubber pipe; 88, second retaining ring; 89, second fixing ring; 90, cooling disk; 91, cooling flow channel; 92, hose; 93, liquid inlet; 94, liquid outlet; 95, foot seat; 96, third nozzle; 97, outer pipe body; 98, air nozzle; 99, air guiding opening; 100, support block; 101, inner pipe body; 102, sliding groove; 103, sliding core; 104, guide sleeve; 105, guide post; 106, gas injection cavity; 107, first air inlet hole; 108, second air inlet hole; 109, push gas pipe; 110, press gas pipe; 111, air sealing cover; 112, step groove; 113, guide seat; 114, tail cap; 115, support rod; 116, sleeve; 117, ball bearing; 118, base; 119, first connecting rod; 120, second connecting rod; 121, inclined rod; 122, diversion cover; 123, convex rod; 124, guide rail; 125, slider; 126, drive rod; 127, notch groove; 128, telescopic rod. Detailed implementation manners

[0038] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements 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.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0040] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Such as Figures 1 to 5As shown in the figure, Embodiment 1 is a cerium oxide airflow pulverization device and production process, including a base 1. Four feet 2 are fixedly connected to the base 1 by bolts. The four feet 2 are arranged at equal angles. A first tank 3 is connected to the feet 2. A jet mechanism 4 is installed in the first tank 3. The jet mechanism 4 is used to eject high-pressure airflows to drive the materials to collide with each other, so that the large-particle-size materials are pulverized into small-particle-size materials. A feed pipe 5 is installed on the first tank 3, and the feed pipe 5 is located above the jet mechanism 4. A cooling component 6 is installed on the inner wall of the first tank 3. The number of the cooling components 6 is four, and the four cooling components 6 are arranged at equal angles. There is an installation gap between adjacent cooling components 6. The cooling component 6 includes a cooling plate 7. The shape of the cooling plate 7 is arc-shaped. The top surface of the cooling plate 7 is provided with refrigerant flow channels 8 arranged at equal angles. The refrigerant flow channels 8 are arranged in two layers. The ports of the two layers of refrigerant flow channels 8 are connected by a U-shaped pipe 9, and the two layers of refrigerant flow channels 8 are communicated by an arc-shaped flow channel 10. Thus, the cooling plate 7 forms an inner and outer double-layer serpentine cooling mode. An inlet pipe 11 and an outlet pipe 12 are connected to the U-shaped pipe 9 at the edge. The inlet pipe 11 and the outlet pipe 12 extend outside the first tank 3. The upper port of the first tank 3 is connected to a second tank 13 by a flange. A classification mechanism 14 is installed on the second tank 13. A discharge pipe 15 is installed on the second tank 13, and the discharge pipe 15 corresponds to the classification mechanism 14. A top cover 16 is installed on the upper port of the second tank 13. Movement process: The base 1 supports the first tank 3 through four feet 2 arranged at equal angles. Materials enter the first tank 3 from the feed pipe 5. The jet mechanism 4 ejects high-pressure airflows to drive the materials to collide and pulverize with each other. The cooling component 6 circulates and cools the inner wall of the first tank 3 through the refrigerant flow channels 8. The pulverized materials enter the second tank 13. The classification mechanism 14 classifies the materials. Qualified materials are discharged from the discharge pipe 15. The top cover 16 closes the upper end of the second tank 13. Beneficial effects: The structure is stable. The materials are pulverized by high-pressure airflows. The cooling component 6 effectively controls the temperature in the tank, avoiding property changes of the materials due to high temperature. The classification mechanism 14 ensures that the discharged particle size meets the requirements.

[0043] As Figure 2 shown, as an optimization of Embodiment 1, the first tank 3 is of a barrel-shaped structure, and the second tank 13 is of a tubular structure.

[0044] As Figure 2 shown, as an optimization of Embodiment 1, the base 1 is of a rectangular frame shape, and the top surface of the base 1 has a vertical through-hole, and the side surface of the base 1 has a lateral through-hole.

[0045] As Figure 6As shown in the figure, as an optimization of the first embodiment, the jet mechanism 4 includes a first gas pipeline 17. The number of the first gas pipelines 17 is 4. The 4 first gas pipelines 17 are horizontally arranged and are located at the installation gaps between adjacent cooling components 6. The ports of the first gas pipelines 17 located inside the first tank 3 are installed with first nozzles 18. The 4 first nozzles 18 are pairwise opposite, and the high-speed air flow carried by the first nozzles 18 collides with the materials. The ports of the first gas pipelines 17 located outside the first tank 3 are installed with second gas pipelines 19. The shape of the second gas pipelines 19 is a bent pipe. The lower end of the second gas pipeline 19 is connected with a third gas pipeline 20. The lower end of the third gas pipeline 20 is connected with a fourth gas pipeline 21. The shape of the fourth gas pipeline 21 is a semi-circular pipe. The 2 fourth gas pipelines 21 are connected into an annular pipeline through flanges. A fifth gas pipeline 22 is connected to one of the fourth gas pipelines 21. Preferably, a sixth gas pipeline 23 is connected to the fifth gas pipeline 22 through a flange. A pressure gauge 24 and a flow meter 25 are installed on the side wall of the sixth gas pipeline 23. A control valve 26 is installed at the free end of the sixth gas pipeline 23. Movement process: The high-pressure gas enters the fourth gas pipeline 21 of the annular pipeline through the sixth gas pipeline 23 and the fifth gas pipeline 22, reaches the first gas pipeline 17 through the third gas pipeline 20 and the bent second gas pipeline 19, and is ejected from the first nozzle 18. The 4 first nozzles 18 are pairwise opposite, and the high-speed air flow carries the materials to collide and be pulverized. Beneficial effects: The reasonable arrangement of the gas pipelines enables the high-pressure air flow to be ejected evenly, improves the collision efficiency of the materials, and realizes efficient pulverization. The pressure gauge 24 and the flow meter 25 are convenient for real-time monitoring and control of the air flow parameters, and the control valve 26 can flexibly adjust the air flow to adapt to different pulverization requirements.

[0046] As Figure 2 and Figure 7As shown in the figure, as an optimization of the first embodiment, a first branch pipe 27 is connected to the side wall of the second tank body 13; a second branch pipe 28 is connected to the side wall of the second tank body 13 by bolts, and the inner wall of the second branch pipe 28 is used for installing the discharge pipe 15. The port of the discharge pipe 15 located in the second tank body 13 has a concave groove; the classification mechanism 14 includes a driving motor 29, the driving motor 29 is connected to the first branch pipe 27 by a flange, a sealing bearing 30 is connected to the shaft side of the driving motor 29, and the sealing bearing 30 is rotatably connected to the first branch pipe 27; a shaft sleeve 31 is connected to the shaft end of the driving motor 29, the shaft sleeve 31 is located in the second tank body 13, a rotating plate 32 is connected to the free end of the shaft sleeve 31, and first blocking strips 33 arranged at equal angles are connected to the end face of the rotating plate 32. The shape of the first blocking strips 33 is arc-shaped, and the gap between adjacent first blocking strips 33 allows small-particle-size materials to enter; a circular ring 34 is connected to the free end of the first blocking strips 33, and the inner hole of the circular ring 34 allows the classified materials to pass through. A flange 35 is provided on one side of the circular ring 34, and the flange 35 is adapted to the concave groove; preferably, second blocking strips 36 arranged at equal angles are connected to the end face of the rotating plate 32. The shape of the second blocking strips 36 is arc-shaped, and the gap between adjacent second blocking strips 36 is smaller than the gap between adjacent first blocking strips 33. The second blocking strips 36 can further optimize the separation of a small amount of large-particle-size materials mixed in the small-particle-size materials, so that these large-particle-size materials are broken between the first blocking strips 33 and the second blocking strips 36. Movement process: The driving motor 29 is connected through the first branch pipe 27 to drive the shaft sleeve 31 and the rotating plate 32 to rotate. The first blocking strips 33 and the second blocking strips 36 on the rotating plate 32 rotate with the rotating plate 32. The small-particle-size materials enter from the gaps between the adjacent blocking strips, the large-particle-size materials are broken between the blocking strips, and the classified materials pass through the inner hole of the circular ring 34. The flange 35 is adapted to the concave groove of the discharge pipe 15 to achieve butt joint discharge. Beneficial effects: The double-layer blocking strip design can more accurately separate materials of different particle sizes. The large-particle-size materials are further broken between the blocking strips, improving the classification efficiency and the uniformity of the discharge particle size. The adaptation of the flange 35 to the concave groove ensures smooth discharge.

[0047] As Figure 8 and Figure 9As shown, as an optimization of the first embodiment, a manhole 37 is connected to the side wall of the first tank body 3. The manhole 37 is located at the installation gap between adjacent cooling components 6. An end cover 38 is connected to the manhole 37 by bolts. Preferably, an inspection opening 39 is provided at the center of the end cover 38. A pressing ring 40 is connected to the end cover 38. A pressing rod 41 is hinged to the end cover 38. The pressing rod 41 is in a V shape. A screw rod 42 is threadedly connected to the middle section of the pressing rod 41. One end of the screw rod 42 is connected to a rocker 43, and the other end of the screw rod 42 is connected to a pressing cover 44. The pressing cover 44 is used to press the pressing ring 40. A buckle 45 is installed and hinged on the end cover 38. The buckle 45 is used to press the free end of the pressing rod 41. Movement process: When maintenance is required, rotate the rocker 43 to drive the pressing cover 44 to loosen the pressing ring 40 through the screw rod 42, open the pressing rod 41 and the buckle 45, and remove the end cover 38 to perform maintenance on the manhole 37. Beneficial effects: It is convenient and fast to open the manhole 37 for internal equipment maintenance and repair. Structures such as the pressing rod 41 and the screw rod 42 ensure that the end cover 38 is sealed and fastened to prevent material leakage.

[0048] As Figures 10 to 13As shown in the figure, as an optimization of the first embodiment, considering that the high-speed air flow of the first nozzle 18 will impact the inner wall of the first tank body 3, a seventh gas transmission pipe 46 is connected to the side wall of the first tank body 3. The seventh gas transmission pipe 46 is arranged tangentially to the first tank body 3. The number of the seventh gas transmission pipes 46 is 2. The positions of the two seventh gas transmission pipes 46 are staggered. The port of the seventh gas transmission pipe 46 located inside the first tank body 3 is connected with a second nozzle 47. The two second nozzles 47 form a spiral air curtain flowing along the inner wall of the first tank body 3 to reduce the impact air flow of the first nozzle 18. Preferably, a pulse mechanism 48 is connected to the seventh gas transmission pipe 46 located outside the first tank body 3. The pulse mechanism 48 includes a valve body 49. A valve cavity 50 communicating with the seventh gas transmission pipe 46 is provided on the valve body 49. A piston cavity 51 communicating with the valve cavity 50 is provided on the valve body 49. The number of the piston cavities 51 is 2. A piston cylinder 52 is slidably connected to the piston cavity 51. The tail of the piston cylinder 52 is located outside the valve body 49. A pressing block 53 is connected to the tail of the piston cylinder 52. A return spring 54 is sleeved on the piston cylinder 52. The return spring 54 is elastically connected between the pressing block 53 and the valve body 49. A first bearing seat 55 is installed on the valve body 49. A first rotating shaft 56 is rotatably connected to the first bearing seat 55. The first rotating shaft 56 is driven by a first motor 57. A cam 58 is connected to the first rotating shaft 56. The number of the cams 58 is 2. The protruding directions of the two cams 58 are opposite. A shaft rod 59 is rotatably connected to the first bearing seat 55. The number of the shaft rods 59 is 2. The two shaft rods 59 are symmetrically arranged. A lever 60 is installed on the shaft rod 59. The lever 60 is arc-shaped. Contact heads 61 are connected to both ends of the lever 60. One contact head 61 is slidably adapted to the cam 58, and the other contact head 61 is slidably adapted to the pressing block 53. Movement process: The first motor 57 drives the first rotating shaft 56 to rotate. The cam 58 rotates accordingly. The protruding directions of the cams 58 are opposite, pushing the contact heads 61 at both ends of the lever 60 to act alternately, causing the piston cylinder 52 to slide in the piston cavity 51, driving the return spring 54 to compress and reset, realizing the intermittent air supply of the pulse mechanism 48 to the seventh gas transmission pipe 46, and the second nozzle 47 spraying a spiral air curtain to reduce the impact of the impact air flow of the first nozzle 18 on the inner wall of the tank body. Beneficial effects: The pulsed air curtain effectively reduces the direct impact of the high-speed air flow on the inner wall of the tank body, reduces wear, and extends the service life of the equipment. The spiral air curtain makes the air flow distribution more uniform and has a better protection effect.

[0049] As Figure 14As shown, as an optimization of the first embodiment, a housing 62 is installed on the seventh gas pipeline 46. The housing 62 has a main gas chamber 63 communicating with the seventh gas pipeline 46. There is a sliding chamber 64 in the middle of the main gas chamber 63. A gas sealing cap 65 is slidably connected in the sliding chamber 64. The gas sealing cap 65 is used to seal the main gas chamber 63. A compression spring 66 is connected to the gas sealing cap 65. The compression spring 66 is located in the sliding chamber 64 in an elastically connected manner; the housing 62 has a side ventilation chamber 67 communicating with the main gas chamber 63. The number of the side ventilation chambers 67 is two. The two ports of the two side ventilation chambers 67 are located on both sides of the sliding chamber 64. The gas sealing cap 65 can adaptively adjust the air pressure in the seventh gas pipeline 46. Movement process: When the air pressure in the seventh gas pipeline 46 changes, the gas sealing cap 65 slides in the sliding chamber 64. Under the elastic action of the compression spring 66, the gas sealing cap 65 adaptively adjusts to control the ventilation conditions of the main gas chamber 63 and the side ventilation chamber 67, so as to achieve stable air pressure. Beneficial effects: It can automatically adjust according to the change of the air pressure in the pipeline, keep the air pressure stable, ensure the stable formation of the air curtain, improve the protection effect on the tank body, and reduce the adverse effects caused by air pressure fluctuations.

[0050] As Figures 15 to 17As shown in the figure, as an optimization of the first embodiment, considering that large-particle materials fall to the bottom of the first tank body 3 and will agglomerate when in a static state for a long time, the bottom of the first tank body 3 is provided with a third branch pipe 68. Preferably, the third branch pipe 68 is located at the center of the first tank body 3. A cover plate 69 is connected to the third branch pipe 68 through a flange. A shaking mechanism 70 is installed on the cover plate 69. The shaking mechanism 70 is used to shake the materials in the first tank body 3 to prevent the materials from agglomerating. The shaking mechanism 70 includes a second rotating shaft 71 rotatably connected to the cover plate 69. The second rotating shaft 71 is driven by a second motor 72. An eccentric seat 73 is hinged to the second rotating shaft 71 above the cover plate 69 through a pin shaft. An eccentric shaft 74 is fixed on the eccentric seat 73. The upper end of the eccentric shaft 74 is connected with a spherical head 75. The spherical head 75 is connected with a ball head seat 76. The cross-sectional shape of the ball head seat 76 is a T-shaped tube. The top surface of the ball head seat 76 has a spherical groove 77 for placing the spherical head 75. The bottom surface of the ball head seat 76 has a conical groove 78 to ensure that the eccentric shaft 74 can deflect. The top surface of the ball head seat 76 is connected with a carrier plate 79 through bolts. The carrier plate 79 is used to carry the materials. The projected area of the carrier plate 79 is larger than the projected area of the third branch pipe 68. The bottom surface of the carrier plate 79 is connected with at least 4 first compression springs 80. The 4 first compression springs 80 are arranged at equal angles. The lower end of the first compression spring 80 is connected with a spring seat 81. The spring seat 81 is fixed to the side wall of the third branch pipe 68. The second motor 72 drives the second rotating shaft 71 to rotate, and then the eccentric shaft 74 drives the carrier plate 79 to shake. The elasticity of the first compression spring 80 enables the carrier plate 79 to reset, and the carrier plate 79 vibrates to prevent the materials from statically agglomerating. Movement process: The second motor 72 drives the second rotating shaft 71 to rotate, and the eccentric seat 73 and the eccentric shaft 74 rotate accordingly, driving the spherical head 75 to move in the spherical groove 77 of the ball head seat 76, causing the carrier plate 79 to shake. The elastic action of the first compression spring 80 allows the carrier plate 79 to reset and vibrate, preventing the materials at the bottom of the first tank body 3 from agglomerating. Beneficial effects: Effectively shake and vibrate the carrier plate 79, keep the bottom materials in a moving state, avoid static agglomeration for a long time, and ensure the material crushing effect and the normal operation of the equipment.

[0051] As Figure 18 and Figure 19As shown in the figure, as an optimization of the first embodiment, considering that there is a gap between the third branch pipe 68 and the carrier plate 79, and this gap is likely to allow materials to enter and affect the shaking of the materials. The side wall of the third branch pipe 68 has a first flange ring 83, and the bottom surface of the carrier plate 79 has a second flange ring 84. A bellows 82 is connected between the first flange ring 83 and the second flange ring 84. The bellows 82 is made of rubber and can cover the eccentric shaft 74 and the second rotating shaft 71. During the movement process: when the carrier plate 79 shakes, the bellows 82 expands and contracts with the relative movement of the first flange ring 83 and the second flange ring 84, covering the eccentric shaft 74 and the second rotating shaft 71 to prevent materials from entering the gap between the third branch pipe 68 and the carrier plate 79. Beneficial effects: The bellows 82 seals the gap, avoids materials from entering and affecting the movement of the shaking mechanism 70, protects the internal structure, and ensures the stable and reliable shaking function.

[0052] As Figure 20 shown, as an optimization of the first embodiment, considering that the above-mentioned bellows 82 can prevent materials from entering the third branch pipe 68, but the first compression spring 80 is still in the materials, and the shaking performance is restricted. The side wall of the carrier plate 79 has a first retaining ring 85. The first retaining ring 85 is connected with a rubber tube 87 through a first fixing ring 86. The shape of the rubber tube 87 is conical; the bottom of the first tank body 3 has a second retaining ring 88. The second retaining ring 88 is located inside the first tank body 3, and the diameter of the second retaining ring 88 is larger than the diameter of the first retaining ring 85; the second retaining ring 88 is fixed to the rubber tube 87 through a second fixing ring 89. The rubber tube 87 and the carrier plate 79 form a closed air chamber. The rubber tube 87 can cover the first compression spring 80, the eccentric shaft 74 and the second rotating shaft 71, and has better protection performance. During the movement process: when the carrier plate 79 shakes, the rubber tube 87 expands and contracts with the relative position change of the first retaining ring 85 and the second retaining ring 88, forms a closed air chamber with the carrier plate 79, and covers the first compression spring 80, the eccentric shaft 74 and the second rotating shaft 71. Beneficial effects: The rubber tube 87 has a better sealing effect, comprehensively protects the internal components, prevents materials from contacting and affecting the shaking performance, and prolongs the service life of the mechanism.

[0053] As Figure 21 and Figure 22 shown, as an optimization of the first embodiment, the top surface of the carrier plate 79 is connected with a cooling plate 90. The inside of the cooling plate 90 has a cooling flow channel 91 in a flat spiral shape. The two ends of the cooling flow channel 91 are connected with hoses 92. One hose 92 is connected with a liquid inlet 93, and the other hose 92 is connected with a liquid outlet 94. The liquid inlet 93 and the liquid outlet 94 are located on the first tank body 3. During the movement process: the cooling flow channel 91 in the cooling plate 90 circulates the refrigerant through the hose 92 to cool the carrier plate 79 and the surrounding materials, and further cools the impact center of the materials; Beneficial effects: The cooling plate 90 further controls the temperature in the tank and prevents the materials from overheating.

[0054] As Figure 23As shown, as an optimization of the first embodiment, a pedestal 95 is connected to the cooling plate 90. The number of pedestals 95 is three, and the three pedestals 95 are arranged at equal angles. A third nozzle 96 is installed on the pedestal 95, and the third nozzle 96 is used to blow the wall-attached materials in the first tank body 3 and the second tank body 13. The third nozzle 96 on the pedestal 95 ejects air flow to blow the wall-attached materials in the first tank body 3 and the second tank body 13. The third nozzle 96 blows the wall-attached materials to avoid the influence of material adhesion on the crushing and classification effects and improve the operation efficiency of the equipment.

[0055] As Figures 24 to 26As shown, as an optimization of the first embodiment, the first nozzle 18 can be replaced by a third nozzle 96; the third nozzle 96 includes an outer tube 97 provided on a pedestal 95, the outer tube 97 is in the shape of a T-shaped tube, an air nozzle 98 is fixed to the upper port of the outer tube 97 by screws, and a funnel-shaped air guide port 99 is provided at the center of the air nozzle 98; a support block 100 is fixed inside the outer tube 97 by screws; the number of support blocks 100 is 2, the 2 support blocks 100 are symmetrically arranged, an inner tube 101 is fixedly connected to the gap between the 2 support blocks 100, a chute 102 is provided on the upper end surface of the inner tube 101, and a sliding core 103 adapted to the air guide port 99 is slidably connected in the chute 102, and the shape of the sliding core 103 is a conical cap; a guide sleeve 104 is fixed in the middle of the inner tube 101, a guide post 105 is slidably connected to the guide sleeve 104, and the upper end of the guide post 105 is connected to the sliding core 103; the lower end of the inner tube 101 has an air injection cavity 106, the air injection cavity 106 is located below the guide sleeve 104, a first air inlet hole 107 and a second air inlet hole 108 are provided on the air injection cavity 106, a push air pipe 109 is installed on the first air inlet hole 107, and a pressure air pipe 110 is installed on the second air inlet hole 108; a sealing air cover 111 is connected to the side wall of the guide post 105, the sealing air cover 111 is slidably adapted to the air injection cavity 106, and the air injection cavity 106 has a step groove 112 for limiting the upward movement of the sealing air cover 111, and the step groove 112 is located above the first air inlet hole 107; a guide seat 113 is fixed to the lower port of the inner tube 101 by screws, the guide seat 113 is slidably connected to the guide post 105, and a tail cap 114 is connected to the guide seat 113; adjustment process: by injecting air into the second air inlet hole 108, the sealing air cover 111 moves upward, and the guide post 105 makes the sliding core 103 face the air nozzle 98, so that the gap between the sliding core 103 and the air guide port 99 becomes smaller, changing the air flow rate. By injecting air into the first air inlet hole 107, the sealing air cover 111 moves downward, and the guide post 105 makes the sliding core 103 move away from the air nozzle 98, so that the gap between the sliding core 103 and the air guide port 99 becomes larger, changing the air flow rate. Movement process: Inject air into the first air inlet hole 107, the sealing air cover 111 moves downward, the guide post 105 drives the sliding core 103 to move away from the air nozzle 98, the gap between the sliding core 103 and the air guide port 99 becomes larger, and the air flow rate increases; inject air into the second air inlet hole 108, the sealing air cover 111 moves upward, the sliding core 103 approaches the air nozzle 98, the gap becomes smaller, and the air flow rate decreases, realizing the adjustment of the air flow rate. Beneficial effects: The air flow rate can be flexibly adjusted according to the crushing requirements, adapting to different materials and crushing particle size requirements, and improving the controllability of the crushing effect and the applicability of the equipment.

[0056] As Figures 27 to 29As shown, as an optimization of the first embodiment, the inner bottom surface of the first tank body 3 is connected with support rods 115 arranged at equal angles. A sleeve 116 is connected to the support rod 115. The sleeve 116 is located at the center of the first tank body 3. A third nozzle 96 is installed on the sleeve 116. The third nozzle 96 located at the center can form a fluidized bed for the falling large-particle-size materials. The third nozzle 96 can be replaced by the first nozzle 18. Preferably, a ball bearing 117 is installed on the side wall of the sleeve 116. Two symmetrically arranged bases 118 are connected to the outer ring of the ball bearing 117. A first connecting rod 119 is rotatably connected to the base 118. The number of the first connecting rods 119 is two. A second connecting rod 120 is rotatably connected to the base 118. The number of the second connecting rods 120 is two. The second connecting rod 120 is located below the first connecting rod 119. One first connecting rod 119 and one second connecting rod 120 form a group. The free ends of the first connecting rod 119 and the second connecting rod 120 are rotatably connected with an inclined rod 121. A flow guide cover 122 is connected to the inclined rod 121. The lower diameter of the flow guide cover 122 is larger than the upper diameter. The shape of the flow guide cover 122 is arc-shaped. The two flow guide covers 122 are buckled to form an inverted V-shaped air flow channel, which can reversely blow the materials at the bottom of the first tank body 3. A convex rod 123 is connected to the side wall of the second connecting rod 120. A guide rail 124 is installed in the middle of the base 118. A slider 125 is slidably connected to the guide rail 124. A driving rod 126 is connected to the slider 125. The driving rod 126 has two symmetrically arranged notch grooves 127. The notch grooves 127 are slidably matched with the convex rod 123. A telescopic rod 128 is connected to the driving rod 126. The telescopic rod 128 is connected to the base 118. The angle of the second connecting rod 120 is adjusted by driving the telescopic rod 128, so as to control the opening and closing of the two flow guide covers 122. Movement process: When the flow guide cover 122 is opened, the third nozzle 96 at the center of the sleeve 116 sprays out air flow to form a fluidized bed for the falling large-particle-size materials. The telescopic rod 128 drives the slider 125 to slide on the guide rail 124, and the flow guide cover 122 is closed. The notch groove 127 of the driving rod 126 cooperates with the convex rod 123 to drive the second connecting rod 120 and the first connecting rod 119 to rotate, control the opening and closing of the flow guide cover 122, and reversely blow the materials at the bottom of the first tank body 3. Beneficial effects: The fluidized bed makes the materials evenly distributed, which is convenient for crushing. The flow guide cover 122 can be adjusted to open and close, reversely blow the materials at the bottom, prevent the materials from piling up, and improve the crushing efficiency and the material processing effect.

[0057] As Figure 30As shown in the figure, a production process of a cerium oxide airflow pulverization device is further proposed. This cerium oxide production process uses high-purity cerium carbonate as raw material to construct a coherent system of "morphology control-pyrolysis crystallization-refined pulverization". First, the cerium carbonate particles are spheroidized by airflow shaping equipment (controlling the sphericity ≥ 90%) to optimize the fluidity of the particles and lay a solid foundation for subsequent continuous production. Then enter the drying process and treat in a fluidized bed at 120~150℃ for 2~3 hours to deeply remove the surface adsorbed water and part of the crystallized water, avoiding the risk of particle cracking caused by water boiling at high temperature.

[0058] The pyrolysis process uses a rotary kiln for calcination, with process parameters set at 800~900℃ and a rotation speed of 1~2r / min, to promote the full decomposition of cerium carbonate into cerium oxide (CeO2) and initial nucleation; the subsequent double-tube kiln secondary crystal solidification process is kept at 700~800℃ in a weak oxidizing atmosphere for 4~6 hours, and temperature-controlled annealing is used to eliminate lattice defects and improve crystal integrity (crystallinity ≥98%), thereby reducing energy consumption barriers for efficient crushing.

[0059] In the refining stage, the material is screened through a 200-mesh vibrating screen and matched with an electromagnetic iron remover with a magnetic field strength of ≥8000Gs to simultaneously intercept mechanical impurities and ferromagnetic particles (iron content ≤3ppm). The core crushing and grading process relies on the airflow crushing device: the counter-jet nozzle of the jet mechanism constructs an eddy field, and the material collision efficiency is increased by 30%; the double-layer serpentine cooling channel stably controls the temperature at 60~80℃ to prevent high-temperature agglomeration of cerium oxide; the double-layer arc-shaped baffle of the grading mechanism realizes the synergy of "coarse screening + fine crushing", and the D50 particle size fluctuation is strictly controlled within ±2μm; the shaking mechanism is linked with the pulse purge system, and the agglomeration rate is reduced to less than 5%, ensuring that the tank is clean without dead corners.

[0060] Finally, it is evenly blended by a mixer (30~50r / min, mixing for 15~20 minutes) and sealed under nitrogen protection. The particle size uniformity of the finished product reaches ISO Class 1, accurately matching the stringent application standards in high-end optics and catalysis fields.

[0061] Although the present invention has been described in detail with reference to the aforementioned examples, it is still possible for those skilled in the art to make and modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cerium oxide airflow pulverization device, characterized in that: It includes a base (1), on which there are support feet (2). On the support feet (2) there is a first tank body (3). Inside the first tank body (3) there is a jetting mechanism (4) for jetting high-pressure air flow to drive materials to collide and crush with each other. On the first tank body (3) there is a feed pipeline (5) located above the jetting mechanism (4); on the inner wall of the first tank body (3) there are cooling components (6) arranged at equal angles. The cooling components (6) include arc-shaped cooling plates (7). On the top surface of the cooling plates (7) there are two layers of refrigerant flow channels (8). The two layers of refrigerant flow channels (8) are connected through an arc-shaped flow channel (10). The ports of the two layers of refrigerant flow channels (8) are connected through a U-shaped pipe (9). On the U-shaped pipe (9) located at the edge there is a liquid inlet pipe (11) and a liquid outlet pipe (12) extending outside the first tank body (3); at the upper port of the first tank body (3) there is a second tank body (13). On the second tank body (13) there is a grading mechanism (14) and a discharge pipeline (15) corresponding to the grading mechanism (14). At the upper port of the second tank body (13) there is a top cover (16).

2. The cerium oxide airflow comminution device according to claim 1, characterized in that: The jetting mechanism (4) includes a first gas pipeline (17) located at the installation gap between adjacent cooling components (6). At the inner port of the first gas pipeline (17) there is a first nozzle (18) installed. At the outer port of the first gas pipeline (17) there is a second gas pipeline (19) installed; the lower end of the second gas pipeline (19) is connected to a third gas pipeline (20). The lower end of the third gas pipeline (20) is connected to a semi-circular tubular fourth gas pipeline (21). Two of the fourth gas pipelines (21) are connected into an annular pipeline through a flange. On one of the fourth gas pipelines (21) there is a fifth gas pipeline (22) connected.

3. The cerium oxide airflow comminution device according to claim 1, wherein: On the side wall of the second tank body (13) there are a first branch pipe (27) and a second branch pipe (28) connected. Inside the second branch pipe (28) there is a discharge pipeline (15) installed. At the port of the discharge pipeline (15) there is a concave groove; the grading mechanism (14) includes a driving motor (29) connected to the first branch pipe (27). On the shaft side of the driving motor (29) there is a sealing bearing (30) rotatably connected to the first branch pipe (27). At the shaft end of the driving motor (29) there is a shaft sleeve (31) located inside the second tank body (13). At the free end of the shaft sleeve (31) there is a rotating plate (32) connected. On the end face of the rotating plate (32) there are first blocking strips (33) arranged at equal angles; at the free end of the first blocking strips (33) there is a circular ring (34) connected. The flange (35) on the circular ring (34) is adapted to the concave groove; on the end face of the rotating plate (32) there are also arc-shaped second blocking strips (36) arranged at equal angles. The gap between adjacent second blocking strips (36) is smaller than the gap between adjacent first blocking strips (33).

4. The cerium oxide airflow pulverization device according to claim 1, characterized in that: The side wall of the first tank body (3) is connected with a manhole (37) at the installation gap of adjacent cooling components (6). An end cover (38) is provided on the manhole (37). A maintenance opening (39) is formed in the center of the end cover (38). A pressure ring (40) is connected to the end cover (38), and a pressure rod (41) is hinged to the end cover (38). A screw rod (42) is threadedly connected to the middle section of the pressure rod (41). One end of the screw rod (42) is connected with a rocker (43), and the other end is connected with a pressure cover (44) for pressing the pressure ring (40). A buckle (45) for pressing the free end of the pressure rod (41) is hinged to the end cover (38).

5. The cerium oxide airflow comminution device according to claim 1, characterized in that: The side wall of the first tank body (3) is provided with a seventh gas transmission pipe (46). The port of the seventh gas transmission pipe (46) is connected with a second nozzle (47). A pulse mechanism (48) is connected to the seventh gas transmission pipe (46). The pulse mechanism (48) includes a valve body (49) having a valve cavity (50). The valve body (49) has two piston cavities (51) communicating with the valve cavity (50). A piston cylinder (52) with its tail located outside the valve body (49) and connected with a pressure block (53) is slidably connected in the piston cavity (51). A return spring (54) is sleeved on the piston cylinder (52) between the pressure block (53) and the valve body (49). A first bearing seat (55) is installed on the valve body (49). A first rotating shaft (56) driven by a first motor (57) is rotatably connected to the first bearing seat (55). Two cams (58) with opposite protruding directions are connected to the first rotating shaft (56). Two symmetrically arranged shaft rods (59) are rotatably connected to the first bearing seat (55). An arc-shaped lever (60) is installed on the shaft rod (59). Contacts (61) that are respectively slidably adapted to the cams (58) and the pressure block (53) are connected to both ends of the lever (60).

6. The cerium oxide airflow pulverization device according to claim 5, wherein: A housing (62) is installed on the seventh gas transmission pipe (46). The housing (62) has a main gas cavity (63) communicating with the seventh gas transmission pipe (46). A sliding cavity (64) is formed in the middle of the main gas cavity (63). A gas sealing cap (65) for closing the main gas cavity (63) is slidably connected in the sliding cavity (64). A compression spring (66) located in the sliding cavity (64) is connected to the gas sealing cap (65). The housing (62) has two side gas cavities (67) communicating with the main gas cavity (63) and with ports located on both sides of the sliding cavity (64).

7. The cerium oxide airflow pulverization device according to claim 1, characterized in that: The center of the bottom of the first tank body (3) is provided with a third branch pipe (68). A cover plate (69) is arranged on the third branch pipe (68), and a shaking mechanism (70) is installed on the cover plate (69). The shaking mechanism (70) includes a second rotating shaft (71) rotatably connected to the cover plate (69) and driven by a second motor (72). An eccentric seat (73) is hinged to the second rotating shaft (71) above the cover plate (69) through a pin shaft. An eccentric shaft (74) is fixed on the eccentric seat (73), and a spherical head (75) is connected to the upper end of the eccentric shaft (74). A ball head seat (76) is connected to the spherical head (75). The spherical groove (77) on the top surface of the ball head seat (76) is used to place the spherical head (75), and the conical groove (78) on the bottom surface ensures the deflection angle of the eccentric shaft (74). A carrier plate (79) for carrying materials is arranged on the top surface of the ball head seat (76). At least 4 first compression springs (80) are arranged at equal angles on the bottom surface of the carrier plate (79). The lower ends of the first compression springs (80) are connected to a spring seat (81) fixed to the side wall of the third branch pipe (68).

8. The cerium oxide airflow comminution device according to claim 7, wherein: The side wall of the third branch pipe (68) is provided with a first flange ring (83), and the bottom surface of the carrier plate (79) is provided with a second flange ring (84). A corrugated pipe (82) made of rubber is connected between the first flange ring (83) and the second flange ring (84). The corrugated pipe (82) is used to cover the eccentric shaft (74) and the second rotating shaft (71).

9. The cerium oxide airflow comminution device according to claim 8, wherein: The side wall of the carrier plate (79) is provided with a first retaining ring (85). The first retaining ring (85) is connected with a conical rubber pipe (87) through a first fixing ring (86). The bottom of the first tank body (3) is provided with a second retaining ring (88) with a diameter larger than that of the first retaining ring (85). The second retaining ring (88) is fixed to the rubber pipe (87) through a second fixing ring (89). The rubber pipe (87) and the carrier plate (79) form a closed air chamber and cover the first compression spring (80), the eccentric shaft (74) and the second rotating shaft (71).

10. The cerium oxide airflow pulverization device according to claim 9, characterized in that: The top surface of the carrier plate (79) is connected with a cooling plate (90) with a flat spiral cooling flow channel (91) inside. The two ports of the cooling flow channel (91) are connected with a liquid inlet (93) and a liquid outlet (94) located on the first tank body (3).

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