Energy-saving ball mill for treating carrier prepared based on cyclohexane dehydrogenation catalyst

Abstract

The invention belongs to the technical field of ball mill equipment, and particularly relates to an energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst, the energy-saving ball mill comprises a rack, the rack is rotatably connected with a cylinder, and the rack is provided with a brake device matched with the cylinder; the brake device comprises a first brake disc fixedly connected with the cylinder body, and a cylindrical second brake disc is fixedly connected to the periphery of the first brake disc. A brake frame is fixedly connected to the rack, and a pair of extrusion discs arranged on the two sides of the first brake disc are connected to the brake frame in a sliding mode; radial discs arranged on the two sides of the extrusion disc are connected to the brake frame in a sliding mode, and the radial discs extrude and brake the first brake disc along with the extrusion disc and slide in the radial direction of the second brake disc to extrude and brake the second brake disc. The invention provides the energy-saving ball mill for treating the carrier prepared based on the cyclohexane dehydrogenation catalyst, which has good braking performance.

Description

Technical Field

[0001] The invention belongs to the technical field of ball mill equipment, and particularly relates to an energy-saving ball mill for carrier treatment based on cyclohexane dehydrogenation catalyst preparation. Background Art

[0002] The cyclohexane dehydrogenation reaction process is called catalytic reforming in the petroleum refining industry. The active components of the catalyst are precious metals such as platinum, the acidic components are mainly halogens (chlorine or fluorine), and the carrier is alumina. Alumina (Al2O3) is the most commonly used carrier material in the preparation of cyclohexane dehydrogenation catalysts. Its unique physical and chemical properties play a decisive role in the catalyst performance.

[0003] Alumina, with the chemical formula A1O:, is one of the most commonly used carriers in industrial catalysts, accounting for approximately 70% of the market share. It typically appears as a white powder or preformed solids, such as bars, spheres, and ingots, to suit the needs of different reactors. Alumina has various crystalline forms, such as α, V, and θ. Transitional aluminas (such as y and n-types) are widely used in catalysis due to their large surface area (10-100 m2 / g) and rich pore structure.

[0004] In terms of physical properties, alumina supports exhibit high specific surface area, porosity, and adjustable pore size distribution. These properties enable them to effectively disperse active components, such as precious metals such as platinum and palladium, preventing them from sintering at high temperatures, thereby improving the stability and activity of the catalyst. In addition, the surface of alumina contains hydroxyl groups and exposed aluminum atoms, exhibiting B acid and L acid properties. Its acidity can be adjusted by heat treatment or doping with impurity ions (such as halogens) to meet the needs of different catalytic reactions.

[0005] In the cyclohexane dehydrogenation reaction, the alumina carrier mainly plays the following roles: first, it acts as a dispersant for the active components, highly dispersing metal particles such as platinum and molybdenum on the carrier surface, thereby increasing the effective active sites; second, the pore structure of alumina affects the diffusion rate of reactants and products, and optimizing the pore size distribution can improve the selectivity and stability of the catalyst; finally, the surface acidity of alumina can produce a synergistic effect with the loaded metal. For example, in the platinum-alumina catalyst, alumina acts as both a carrier and an acidic component to participate in the reaction, promoting the degassing process of cyclohexane.

[0006] In summary, alumina supports play a crucial role in cyclohexane dehydrogenation catalysts, with their physical and chemical properties directly influencing catalyst performance. By optimizing the support's crystal form, specific surface area, pore structure, and surface acidity, the catalyst's activity, selectivity, and stability can be significantly improved to meet the demands of industrial production.

[0007] The core raw material for alumina production is bauxite, which typically contains 40%-70% alumina. After crushing and screening, the raw material enters a ball mill for fine grinding. Through the impact, compression, and friction between steel balls and the material, the ball mill refines the bauxite from small particles of 3-30 mm to less than 100 μm, or even down to 5 μm.

[0008] However, the existing ball mill has the following technical problems when in use: when the ball mill is parked, the braking effect is poor, which can easily cause the brake pads to break and the brake to fail, causing equipment failure of the ball mill. Summary of the Invention

[0009] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an energy-saving ball mill for carrier processing based on cyclohexane dehydrogenation catalyst preparation with good braking performance.

[0010] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: an energy-saving ball mill for carrier processing based on cyclohexane dehydrogenation catalyst preparation, comprising a frame, a cylinder being rotatably connected to the frame, and a braking device cooperating with the cylinder being provided on the frame; the braking device comprising a first brake disc fixed to the cylinder, a cylindrical second brake disc being fixed to the outer periphery of the first brake disc; a brake frame being fixed to the frame, a pair of extrusion discs arranged on both sides of the first brake disc being slidably connected to the brake frame; radial discs arranged on both sides of the extrusion disc being slidably connected to the brake frame, the radial discs sliding radially along the second brake disc to extrude and brake the second brake disc as the extrusion discs squeeze and brake the first brake disc.

[0011] Furthermore, a motor is fixedly connected to the frame, and a reducer is connected to the output end of the motor; a coupling is connected to the output end of the reducer, and a discharge barrel coaxially arranged with the cylinder is connected to the coupling; a feed port is provided on the cylinder, and a discharge barrel is provided with a discharge port corresponding to the feed port.

[0012] Furthermore, the cylinder is provided with an inspection port, and the cylinder is provided with an inspection plate that cooperates with the inspection port.

[0013] Furthermore, a sliding rod is fixedly connected to the brake frame, and a sliding cylinder slidably connected to the sliding rod is fixedly connected to the extrusion disk; a hydraulic rod is fixedly connected to the brake frame, and the hydraulic rod is fixedly connected to one of the extrusion disks.

[0014] Furthermore, a bidirectional crank is rotatably connected to the brake frame, and the center position of the bidirectional crank is rotatably connected to the brake frame; both ends of the bidirectional crank are rotatably connected to connecting rods, and a pair of the connecting rods are rotatably connected to synchronization blocks, and a pair of the synchronization blocks are respectively fixed to the sliding cylinders of a pair of the extrusion plates.

[0015] Furthermore, a pair of radial discs are provided on both sides of the extrusion disc, and the pair of radial discs are provided on both sides of the first brake disc, and the first brake disc is provided at the center of the second brake disc.

[0016] Furthermore, both ends of the plurality of radial disks are rotatably connected to radial cylinders, a radial rod is fixed to the brake frame, and the radial cylinder is slidably connected to the radial rod.

[0017] Furthermore, a lifting rod is fixedly connected to the brake frame, and a lifting block is slidably connected to the lifting rod; a synchronization rod is rotatably connected to the radial disk, and the synchronization rod is rotatably connected to the lifting block.

[0018] Furthermore, one of the extrusion plates is rotatably connected to an input rod, the input rod is rotatably connected to an L-shaped rod, the middle part of the L-shaped rod is rotatably connected to the brake frame; the other end of the L-shaped rod is rotatably connected to the output rod, the other end of the output rod is rotatably connected to the lifting block.

[0019] Furthermore, the frame is rotatably connected to support wheels arranged on both sides of the cylinder and cooperating with the second brake disc, and the first brake disc is evenly distributed with perforations along the circumference.

[0020] Compared with the prior art, the advantages and beneficial effects of the present invention are: When braking is required, the present invention performs a single brake on the cylinder by cooperating with the extrusion disc and the first brake disc, and performs a double brake on the cylinder by cooperating with the radial disc and the second brake disc. The cylinder is braked by the double brake cooperation. The redundant setting of the double brake not only improves the braking effect of the present application, but also even if one of the brakes fails, the other brake can still play a braking role, which can effectively avoid the problem of failure of the ball mill caused by failure of the braking device, and improve the stability of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a first axonometric view of the braking device of the present invention; Figure 3 is a second axonometric view of the braking device of the present invention; Figure 4 Schematic diagram of the coordination of the radial disc, squeeze disc, hydraulic rod, brake rack and other structures in the present invention; Figure 5 Schematic diagram of the structure of the brake frame in the present invention; Figure 6 This is a schematic diagram of the coordination of the hydraulic rod, extrusion plate, two-way crank, connecting rod, lifting block and other structures in the present invention; Figure 7 This is a schematic diagram of the coordination of the hydraulic rod, extrusion plate, bidirectional crank, connecting rod and other structures in the present invention; Figure 8 Schematic diagram of the coordination of the radial disk, synchronization rod, input rod, output rod, lifting block, L-shaped rod and other structures in the present invention; In the figure: 1. frame, 2. motor, 3. reducer, 4. discharge port, 5. cylinder, 6. inspection port, 7. braking device, 8. feed port, 9. first brake disc, 10. second brake disc, 11. perforation, 12. brake frame, 13. support wheel, 14. radial disc, 15. synchronization rod, 16. hydraulic rod, 17. lifting block, 18. extrusion disc, 19. output rod, 20. input rod, 21. L-shaped rod, 22. radial rod, 23. slide rod, 24. lifting rod, 25. slide cylinder, 26. synchronization block, 27. connecting rod, 28. two-way crank, 29. through hole, 30. radial cylinder. DETAILED DESCRIPTION

[0022] An energy-saving ball mill for carrier treatment based on cyclohexane dehydrogenation catalyst preparation, such as Figure 1-8 As shown, it includes a frame 1, on which a cylinder 5 is rotatably connected, and a braking device 7 cooperating with the cylinder 5 is provided on the frame 1; the braking device 7 includes a first brake disc 9 fixed to the cylinder 5, and a cylindrical second brake disc 10 is fixed to the outer periphery of the first brake disc 9; a brake frame 12 is fixed to the frame 1, and a pair of extrusion discs 18 arranged on both sides of the first brake disc 9 are slidably connected to the brake frame 12; radial discs 14 arranged on both sides of the extrusion disc 18 are slidably connected to the brake frame 12, and the radial discs 14 slide radially along the second brake disc 10 to squeeze and brake the second brake disc 10 as the extrusion disc 18 squeezes and brakes the first brake disc 9.

[0023] When the present invention needs braking, the cylinder 5 is directly braked by the braking device 7 to achieve the purpose of braking the cylinder 5; specifically, the cylinder 5 is braked once by the extrusion disc 18 and the first brake disc 9, and the cylinder 5 is braked twice by the radial disc 14 and the second brake disc 10, and the cylinder 5 is braked by the double braking; the redundant setting of the double braking not only improves the braking effect of the present application; but even if one of the brakes fails, the other brake can still play a braking role, which can effectively avoid the problem of failure of the ball mill caused by failure of the braking device 7, and improve the stability of the present application.

[0024] Further, if Figure 1 As shown, a motor 2 is fixedly connected to the frame 1, and the output end of the motor 2 is connected to a reducer 3; the output end of the reducer 3 is connected to a coupling, and the coupling is connected to a discharge barrel coaxially arranged with the barrel 5; a feed port 8 is provided on the barrel 5, and a discharge barrel is provided with a discharge port 4 corresponding to the feed port 8; an inspection port 6 is provided on the barrel 5, and an inspection plate cooperating with the inspection port 6 is provided on the barrel 5.

[0025] When the ball mill is in use, grinding media (such as steel balls) and alumina raw materials are added to the barrel 5 through the feed port 8; the motor 2 drives the barrel 5 to rotate through the reducer 3, the coupling, and the discharge barrel. The barrel 5 uses centrifugal force, friction and gravity to lift the grinding media (such as steel balls) in the barrel to a certain height and then drop it. The material is crushed through the dual effects of impact and grinding, and the ground and crushed material can flow out through the discharge port 4.

[0026] Further, if Figure 5 and Figure 6 As shown, a slide rod 23 is fixed to the brake frame 12, and a slide cylinder 25 slidably connected to the slide rod 23 is fixed to the extrusion plate 18; a hydraulic rod 16 is fixed to the brake frame 12, and the hydraulic rod 16 is fixed to one of the extrusion plates 18; a two-way crank 28 is rotatably connected to the brake frame 12, and the center position of the two-way crank 28 is rotatably connected to the brake frame 12; both ends of the two-way crank 28 are rotatably connected to a connecting rod 27, and a pair of the connecting rods 27 are rotatably connected to a synchronization block 26, and a pair of the synchronization blocks 26 are respectively fixed to the slide cylinders 25 of a pair of the extrusion plates 18.

[0027] When the extrusion disc 18 is in use, the hydraulic rod 16 is started, and the hydraulic rod 16 drives one of the extrusion discs 18 to slide along the slide rod 23 through the slide cylinder 25; at the same time, the extrusion disc 18 drives the two-way crank 28 to rotate through the corresponding connecting rod 27, and the two-way crank 28 drives the slide cylinder 25 on the other extrusion disc 18 to slide along the slide rod 23 through another connecting rod 27, and the slide cylinder 25 drives the extrusion disc 18 to move, and a pair of extrusion discs 18 move synchronously to squeeze and brake the first brake disc 9, and the first brake disc 9 brakes the cylinder 5 to achieve the first heavy braking.

[0028] Further, if Figure 2 、 3 As shown in , 4, and 8, a pair of radial disks 14 are provided on both sides of the extrusion disk 18, and a pair of radial disks 14 are provided on both sides of the first brake disk 9, and the first brake disk 9 is provided at the center of the second brake disk 10; both ends of the multiple radial disks 14 are rotatably connected with radial cylinders 30, and a radial rod 22 is fixedly connected to the brake frame 12, and the radial cylinder 30 is slidably connected to the radial rod 22; a lifting rod 24 is fixed to the brake frame 12, and a lifting block 17 is slidably connected to the lifting rod 24, and the lifting block 17 is provided with a through hole 29 that can slide up and down along the lifting rod 24; a synchronization rod 15 is rotatably connected to the radial disk 14, and the synchronization rod 15 is rotatably connected to the lifting block 17.

[0029] When the radial disc 14 is in use, the lifting block 17 slides along the lifting rod 24, and the lifting block 17 drives the radial disc 14 to move through the synchronization rod 15; the radial disc 14 slides along the radial rod 22 through the radial cylinder 30, so that the outer periphery of the radial disc 14 contacts the inner periphery of the second brake disc 10 for braking, thereby achieving the second braking.

[0030] Further, if Figure 8 As shown, one of the extrusion plates 18 is rotatably connected to an input rod 20, and the input rod 20 is rotatably connected to an L-shaped rod 21, and the middle part of the L-shaped rod 21 is rotatably connected to the brake frame 12; the other end of the L-shaped rod 21 is rotatably connected to the output rod 19, and the other end of the output rod 19 is rotatably connected to the lifting block 17.

[0031] When the extrusion plate 18 moves, the extrusion plate 18 drives the L-shaped rod 21 to rotate through the input rod 20, and the L-shaped rod 21 drives the lifting block 17 to slide along the lifting rod 24 through the output rod 19, thereby realizing the synchronous movement of the extrusion plate 18 and the lifting block 17, that is, the synchronous movement of the extrusion plate 18 and the radial plate 14, so that the first brake and the second brake act synchronously to improve the linkage of the present application.

[0032] Furthermore, the frame 1 is rotatably connected to support wheels 13 which are arranged on both sides of the cylinder 5 and cooperate with the second brake disc 10. The second brake disc 10 is supported by the support wheels 13 to improve the stability of the cylinder 5; the first brake disc 9 is evenly distributed with perforations 11 along the circumference, and the setting of the perforations 11 improves the stability of the contact between the extrusion disc 18 and the first brake disc 9.

[0033] like Figures 1 to 8 As shown, the working process of the present invention is explained in detail below.

[0034] When the present invention is in use, grinding media (such as steel balls) and alumina raw materials are added to the barrel 5 through the feed port 8; the motor 2 drives the barrel 5 to rotate through the reducer 3, the coupling, and the discharge barrel. The barrel 5 uses centrifugal force, friction and gravity to lift the grinding media (such as steel balls) in the barrel to a certain height and then throw it down. The material is crushed through the dual effects of impact and grinding, and the ground and crushed material can flow out through the discharge port 4.

[0035] When the cylinder 5 needs to be braked, the motor 2 is turned off, the telescopic rod is started, and the hydraulic rod 16 drives one of the extrusion plates 18 to slide along the slide rod 23 through the slide cylinder 25; at the same time, the extrusion plate 18 drives the two-way crank 28 to rotate through the corresponding connecting rod 27, and the two-way crank 28 drives the slide cylinder 25 on the other extrusion plate 18 to slide along the slide rod 23 through another connecting rod 27, and the slide cylinder 25 drives the extrusion plate 18 to move, and a pair of extrusion plates 18 move synchronously to squeeze and brake the first brake disc 9, and the first brake disc 9 brakes the cylinder 5 to achieve the first heavy braking.

[0036] At the same time, the extrusion disk 18 drives the L-shaped rod 21 to rotate via the input rod 20, and the L-shaped rod 21 drives the lifting block 17 to slide along the lifting rod 24 via the output rod 19. The lifting block 17 drives the radial disk 14 to move via the synchronization rod 15, and the radial disk 14 slides along the radial rod 22 via the radial cylinder 30, thereby causing the outer periphery of the radial disk 14 to contact the inner periphery of the second brake disk 10 for braking, thereby achieving a second level of braking. By synchronizing the first and second levels of braking to brake the cylinder 5, not only is the braking effect of the present application improved, but even if one of the brakes fails, the other brake can still function, effectively avoiding the problem of a ball mill malfunction caused by a malfunction of the brake device 7, thereby improving the stability of the present application.

Claims

1. An energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst, comprising a frame (1), a barrel (5) rotatably connected to the frame (1), and a brake device (7) cooperating with the barrel (5) provided on the frame (1); characterized in that: The braking device (7) includes a first brake disc (9) fixed to the cylinder (5), and a cylindrical second brake disc (10) is fixed to the outer periphery of the first brake disc (9); a brake frame (12) is fixed to the frame (1), and a pair of extrusion discs (18) arranged on both sides of the first brake disc (9) are slidably connected to the brake frame (12); a radial disc (14) arranged on both sides of the extrusion disc (18) is slidably connected to the brake frame (12), and the radial disc (14) slides radially along the second brake disc (10) to squeeze and brake the second brake disc (10) as the extrusion disc (18) squeezes and brakes the first brake disc (9).

2. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 1, characterized in that: A motor (2) is fixedly connected to the frame (1), and the output end of the motor (2) is connected to a reducer (3); the output end of the reducer (3) is connected to a coupling, and the coupling is connected to a discharge barrel coaxially arranged with the barrel (5); a feed port (8) is provided on the barrel (5), and a discharge port (4) corresponding to the feed port (8) is provided on the discharge barrel.

3. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 2, characterized in that: The cylinder (5) is provided with an inspection port (6), and the cylinder (5) is provided with an inspection plate that cooperates with the inspection port (6).

4. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 1, characterized in that: A slide rod (23) is fixedly connected to the brake frame (12), and a slide cylinder (25) slidably connected to the slide rod (23) is fixedly connected to the extrusion plate (18); a hydraulic rod (16) is fixedly connected to the brake frame (12), and the hydraulic rod (16) is fixedly connected to one of the extrusion plates (18).

5. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 4, characterized in that: A bidirectional crank (28) is rotatably connected to the brake frame (12), and the center position of the bidirectional crank (28) is rotatably connected to the brake frame (12); both ends of the bidirectional crank (28) are rotatably connected to connecting rods (27), and a pair of the connecting rods (27) are rotatably connected to synchronization blocks (26), and the pair of synchronization blocks (26) are respectively fixed to the slide cylinders (25) of the pair of extrusion plates (18).

6. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 1, characterized in that: A pair of radial discs (14) are provided on both sides of the extrusion disc (18), and the pair of radial discs (14) are provided on both sides of the first brake disc (9), and the first brake disc (9) is provided at the center of the second brake disc (10).

7. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 6, characterized in that: Both ends of the plurality of radial disks (14) are rotatably connected to radial cylinders (30), a radial rod (22) is fixed to the brake frame (12), and the radial cylinder (30) is slidably connected to the radial rod (22).

8. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 7, characterized in that: A lifting rod (24) is fixedly connected to the brake frame (12), and a lifting block (17) is slidably connected to the lifting rod (24); a synchronization rod (15) is rotatably connected to the radial disk (14), and the synchronization rod (15) is rotatably connected to the lifting block (17).

9. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 8, characterized in that: An input rod (20) is rotatably connected to one of the extrusion plates (18), an L-shaped rod (21) is rotatably connected to the input rod (20), and a middle portion of the L-shaped rod (21) is rotatably connected to the brake frame (12); the other end of the L-shaped rod (21) is rotatably connected to the output rod (19), and the other end of the output rod (19) is rotatably connected to the lifting block (17).

10. The energy-saving ball mill for treating a carrier prepared based on a cyclohexane dehydrogenation catalyst according to claim 1, characterized in that: Support wheels (13) arranged on both sides of the cylinder (5) and cooperating with the second brake disc (10) are rotatably connected to the frame (1), and the first brake disc (9) is evenly distributed with perforations (11) along the circumference.

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