A raw material screening device for calcium carbonate production
By adopting a rolling limit wheel and a forward and reverse motor drive design in the calcium carbonate production unit, the problems of limit wear and manual intervention of the screening cylinder are solved, thus extending the service life of components and automating screening, making it suitable for industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HONGYUAN IND GROUP CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-29
AI Technical Summary
In existing calcium carbonate production equipment, the limiting mechanism of the screening cylinder slides within the slide rail via a slider, resulting in severe wear of the components, requiring frequent replacement, and necessitating manual intervention in the screening operation, making it difficult to adapt to continuous industrial production.
The traditional sliding limiter is replaced by a rolling limiter. The limiter is installed in the grooves on the top and bottom of the frame, and a horizontal plate and wheel seat are installed on the right side of the screening cylinder. The limiter rolls in the grooves and is driven by a forward and reverse motor to tilt the screen for unloading, which reduces component wear and realizes automated operation.
It reduces component wear, extends service life, reduces labor costs, is suitable for continuous industrial production, and improves screening efficiency and automation.
Smart Images
Figure CN224293828U_ABST
Abstract
Description
Technical Field
[0001] This patent relates to the field of calcium carbonate production technology, specifically a calcium carbonate production raw material powder selection device. Background Technology
[0002] After calcium carbonate production is completed, it needs to be screened by a powder classifier to separate calcium carbonate of different particle sizes. The existing powder classifier consists of a screening cylinder and an external vibrating motor. The vibrating motor can drive the screening cylinder to move left and right, thereby increasing the screening efficiency. However, the limiting mechanism of the screening cylinder is mostly a sliding block that slides in the slide rail. The limiting is a sliding limit, and the wear between the parts is serious, requiring frequent replacement. Therefore, we propose a powder classifier for calcium carbonate production raw materials. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this patent is to provide a powder selection device for calcium carbonate production raw materials. This patent features wheel grooves at the top and bottom of the frame, a horizontal plate installed on the right side of the screening cylinder, and limit wheels mounted on the inner sides of both horizontal plates via wheel seats. The edge of the limit wheel is rolled within the wheel groove. This rolling limit, instead of the traditional sliding limit, significantly reduces wear between components and extends service life. The forward and reverse motor drives the screen to tilt and discharge material, eliminating the need for manual intervention, reducing labor costs, and making it suitable for continuous industrial production.
[0004] The technical solution adopted by this patent to solve its technical problem is: a powder selection device for calcium carbonate production raw materials, including a frame and a screening cylinder. The top left side of the frame is provided with an installation port. The top and bottom front and rear sides of the frame are provided with wheel grooves. A vibration motor is fixedly installed inside the left end of the installation port. The eccentric end of the vibration motor is installed on the left end of the outer shell of the screening cylinder. A crossbar is fixedly installed on the upper and lower sides of the right end of the screening cylinder. A cross plate is fixedly installed on the right end of the crossbar. Wheel seats are fixedly installed at the four corners of the inner side of the cross plate. A limiting wheel is installed in the wheel seat. The edge of the limiting wheel is rolled in the wheel groove.
[0005] A motor is fixedly installed on the front side of the outer shell of the screening cylinder. A shaft is fixedly installed at the front end of the motor shaft. Screens are fixedly installed at both ends of the side wall of the shaft. An arc-shaped baffle is fixedly installed at the outer end of the screen. The outer side of the arc-shaped baffle is slidably installed on the inner side wall of the screening cylinder. A feed hopper is embedded at the top of the screening cylinder. A first discharge hopper and a second discharge hopper are embedded at the bottom of the screening cylinder.
[0006] Furthermore, the left end of the crossbar is detachably connected to the right side of the outer shell of the screening cylinder.
[0007] Furthermore, the left end of the wheel groove is in an open state.
[0008] Furthermore, it also includes a first conveyor belt and a second conveyor belt, which are located below the first discharge hopper and the second discharge hopper, respectively.
[0009] Furthermore, the wheel seat includes a U-shaped seat and a bolt. One end of the outer side of the U-shaped seat is provided with a hexagonal groove. The end of the bolt passes through the U-shaped seat and is screwed with a nut. The end of the bolt is hexagonal and is inserted into the hexagonal groove.
[0010] Furthermore, a blank area is provided on the side wall of the bolt.
[0011] The beneficial effects of this patent are:
[0012] 1. This patent features wheel grooves at the top and bottom of the frame, a horizontal plate on the right side of the screening cylinder, and limit wheels mounted on the inner sides of both horizontal plates via wheel seats. The limit wheels are rolled in the wheel grooves at their edges. This rolling limit instead of the traditional sliding limit greatly reduces wear between components and extends service life. The forward and reverse motors drive the screen to tilt and unload material without manual intervention, reducing labor costs and making it suitable for continuous industrial production. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this patent.
[0014] Figure 2 This is a 3D view of the frame of this patent.
[0015] Figure 3 This is a schematic diagram of the screening cylinder of this patent.
[0016] Figure 4 This is a schematic diagram of the screening cylinder of this patent.
[0017] Figure 5 This is a schematic diagram of the wheel seat of this patent.
[0018] Explanation of reference numerals in the attached drawings: 1. Frame, 2. Mounting port, 3. Wheel groove, 4. Vibrating motor, 5. Screening cylinder, 6. Crossbar, 7. Horizontal plate, 8. Wheel seat, 9. Limiting wheel, 10. Motor, 11. Shaft, 12. Screen, 13. Arc-shaped baffle, 14. Feed hopper, 15. First discharge hopper, 16. Second discharge hopper, 17. First conveyor belt, 18. Second conveyor belt, 19. U-shaped seat, 20. Hexagonal groove, 21. Bolt, 22. Nut, 23. Blank area. Detailed Implementation
[0019] The present patent is further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the patent. Furthermore, it should be understood that after reading the teachings of this patent, those skilled in the art can make various alterations or modifications to this patent, and these equivalent forms also fall within the scope defined by the appended claims.
[0020] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This is a schematic diagram of the structure of this patent. A powder selection device for calcium carbonate production raw materials includes a frame 1 and a screening cylinder 5. The top left side of the frame 1 is provided with an installation port 2. The top and bottom front and rear sides of the frame 1 are provided with wheel grooves 3. The left end of the installation port 2 is fixedly installed with a vibration motor 4. The eccentric end of the vibration motor 4 is installed on the left end of the outer shell of the screening cylinder 5. The upper and lower sides of the right end of the screening cylinder 5 are fixedly installed with crossbars 6. The right end of the crossbars 6 is fixedly installed with a cross plate 7. The four corners of the inner side of the cross plate 7 are fixedly installed with wheel seats 8. The wheel seats 8 are equipped with limit wheels 9. The edge of the limit wheel 9 is rolled in the wheel groove 3.
[0021] The limiting wheel 9 is made of polyurethane coated wheel, which has wear-resistant and shock-absorbing properties. It has a diameter of 80mm and a width of 30mm. The clearance between the wheel wheel and the groove 3 is controlled at 0.5-1mm to ensure the smooth operation of the screening cylinder 5.
[0022] The vibratory motor 4 is an excitation source that integrates the power source and the vibration source. An adjustable eccentric block is installed at each end of the rotor shaft. The excitation force is obtained by utilizing the centrifugal force generated by the high-speed rotation of the shaft and eccentric blocks. After the power is turned on, the current passes through the stator coils to generate a magnetic field. Under the action of the magnetic field, the rotor begins to rotate. The eccentric blocks on the rotor generate eccentric force during rotation, causing the entire motor to vibrate. The direction of the vibration is the same as the direction of rotation of the eccentric blocks.
[0023] Based on the size of the screening cylinder and the material processing capacity, select a 1.5-3kW vibrating motor, such as the YZU series vibrating motor, set to 1440r / min (corresponding to 50Hz AC power). The speed range can be adjusted from 1000 to 1600r / min via a frequency converter. Use adjustable eccentric blocks with a single block mass adjustment range of 0.5-2kg. The excitation force can be adjusted by adding or removing counterweights or adjusting the eccentric angle.
[0024] A motor 10 is fixedly installed on the front side of the outer shell of the screening cylinder 5. A shaft 11 is fixedly installed at the front end of the rotating shaft of the motor 10. Screens 12 are fixedly installed on both the left and right ends of the side wall of the shaft 11. An arc-shaped baffle 13 is fixedly installed on the outer end of the screen 12. The outer side of the arc-shaped baffle 13 is slidably installed on the inner side wall of the screening cylinder 5. A feed hopper 14 is embedded at the top of the screening cylinder 5. A first discharge hopper 15 and a second discharge hopper 16 are embedded at the bottom side of the screening cylinder 5.
[0025] Motor 10 is a forward and reverse reversible motor, such as Figure 3 As shown, this is the initial state. Calcium carbonate particles falling from the feed hopper 14 can fall through the screen 12 and into the first discharge hopper 15. Particles that cannot pass through the screen 12 are retained on it. The motor 10 can drive the shaft 11 to rotate clockwise until... Figure 4 As shown in the diagram, the calcium carbonate particles on screen 12 can fall from the second discharge hopper 16, and then the motor 10 reverses to rotate screen 12 to... Figure 3 Repeat the powder selection process at the indicated positions.
[0026] Motor 10 can be a three-phase asynchronous forward and reverse motor, such as the YE3 series, with a power of 0.75kW, a torque of 3.8N・m, a speed of 1400r / min, and a forward and reverse switching time interval set to 10-30s, controlled by a PLC or time relay.
[0027] The screen 12 is made of 304 stainless steel, which is corrosion resistant and has high strength. Different mesh sizes are selected according to the particle size requirements of calcium carbonate products. For example, when producing fine powder, a 200 mesh (mesh size of about 74μm) with a wire diameter of 0.15mm can be selected; when producing coarse powder, a 40 mesh (mesh size of about 425μm) with a wire diameter of 0.35mm can be selected.
[0028] Specifically, the left end of the crossbar 6 is detachably connected to the right side of the outer shell of the screening cylinder 5.
[0029] The crossbar 6 and the screening cylinder 5 are connected by M12 high-strength bolts. Corresponding bolt holes are set on the outer shell of the screening cylinder 5 and the end of the crossbar 6. Four bolts are arranged at each connection point to ensure a firm connection and easy disassembly.
[0030] The left end of the crossbar 6 is detachably connected to the right side of the outer shell of the screening cylinder 5, which facilitates the initial assembly of the crossbar 6 and the screening cylinder 5.
[0031] Specifically, the left end of the wheel groove 3 is in the open state.
[0032] The left end of the wheel groove 3 is open, which makes it easy to install the limiting wheel 9 in the wheel groove 3 from the left end of the wheel groove 3.
[0033] Specifically, it also includes a first conveyor belt 17 and a second conveyor belt 18, which are located below the first discharge hopper 15 and the second discharge hopper 16, respectively.
[0034] Specifically, the wheel seat 8 includes a U-shaped seat 19 and a bolt 21. One end of the outer side of the U-shaped seat 19 is provided with a hexagonal groove 20. The end of the bolt 21 passes through the U-shaped seat 19 and is screwed with a nut 22. The end of the bolt 21 is hexagonal and is inserted into the hexagonal groove 20.
[0035] Traditional wheel seats are made by directly passing bolts through the central hole of the wheel body. The rotation of the wheel body can easily cause the bolts and nuts to loosen or even fall off. However, by inserting the end of the hexagonal bolt 21 into the hexagonal groove 20, the loosening of the bolt 21 and nut 22 can be avoided.
[0036] Specifically, a blank area 23 is provided on the side wall of bolt 21.
[0037] The blank area 23 is not threaded, so as to avoid the thread from hindering the rotation of the limit wheel 9.
[0038] Working principle: Calcium carbonate granules are fed into the feed hopper 14. The falling granules pass through the screen 12 and fall into the first discharge hopper 15. Granules that cannot pass through the screen 12 are trapped on the screen 12. The motor 10 drives the shaft 11 to rotate clockwise until... Figure 4 As shown in the diagram, the calcium carbonate particles on screen 12 can fall from the second discharge hopper 16, and then the motor 10 reverses to rotate screen 12 to... Figure 3 The powder selection operation is repeated at the position shown. At the same time, the vibrating motor 4 can drive the screening cylinder 5 to vibrate left and right, increasing the screening efficiency of the screen 12. While the screening cylinder 5 moves left and right, the limiting wheel 9 can roll left and right in the wheel groove 3, thereby limiting the movement trajectory of the screening cylinder 5.
[0039] It should be noted that the device structure and accompanying drawings of this patent mainly describe the principle of this patent. In terms of the technical aspects of this design principle, the setting of the device's power mechanism, power supply system and control system is not fully described. However, those skilled in the art who understand the principle of the above patent can clearly understand the specifics of its power mechanism, power supply system and control system.
[0040] This patented technology features wheel grooves at the top and bottom of the frame, a horizontal plate on the right side of the screening cylinder, and limit wheels mounted on the inner sides of both horizontal plates via wheel seats. The limit wheels are rolled within the wheel grooves at their edges. This rolling limit mechanism replaces the traditional sliding limit mechanism, significantly reducing wear between components and extending service life. The forward and reverse motors drive the screen to tilt and unload material without manual intervention, reducing labor costs and making it suitable for continuous industrial production.
[0041] In the description of this patent, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0042] Although embodiments of this patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this patent, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A powder sorting device for calcium carbonate production raw materials, characterized in that: The machine includes a frame (1) and a screening cylinder (5). The top left side of the frame (1) is provided with an installation port (2). The top and bottom front and rear sides of the frame (1) are provided with wheel grooves (3). The left end of the installation port (2) is fixedly installed with a vibration motor (4). The eccentric end of the vibration motor (4) is installed on the left end of the outer shell of the screening cylinder (5). The upper and lower sides of the right end of the screening cylinder (5) are fixedly installed with crossbars (6). The right end of the crossbars (6) is fixedly installed with a horizontal plate (7). The four corners of the inner side of the horizontal plate (7) are fixedly installed with wheel seats (8). The wheel seats (8) are installed with limit wheels (9). The wheel body edge of the limit wheels (9) is rolled in the wheel groove (3). A motor (10) is fixedly installed on the front side of the outer shell of the screening cylinder (5). A shaft (11) is fixedly installed at the front end of the rotating shaft of the motor (10). Screens (12) are fixedly installed on both the left and right ends of the side wall of the shaft (11). An arc-shaped baffle (13) is fixedly installed on the outer end of the screen (12). The outer side of the arc-shaped baffle (13) is slidably installed on the inner side wall of the screening cylinder (5). A feed hopper (14) is embedded at the top of the screening cylinder (5). A first discharge hopper (15) and a second discharge hopper (16) are embedded on the bottom side of the screening cylinder (5).
2. The calcium carbonate production raw material powder selection device according to claim 1, characterized in that: The left end of the crossbar (6) is detachably connected to the right side of the outer shell of the screening cylinder (5).
3. The calcium carbonate production raw material powder selection device according to claim 1, characterized in that: The left end of the wheel groove (3) is in the open state.
4. The calcium carbonate production raw material classification device according to claim 1, characterized in that: It also includes a first conveyor belt (17) and a second conveyor belt (18), which are located below the first discharge hopper (15) and the second discharge hopper (16), respectively.
5. A calcium carbonate production raw material powder selection device according to claim 1, characterized in that: The wheel seat (8) includes a U-shaped seat (19) and a bolt (21). One end of the outer side of the U-shaped seat (19) is provided with a hexagonal groove (20). The end of the bolt (21) passes through the U-shaped seat (19) and is screwed with a nut (22). The end of the bolt (21) is hexagonal and is inserted into the hexagonal groove (20).
6. The calcium carbonate production raw material powder selection device according to claim 5, characterized in that: The bolt (21) has a blank area (23) on its side wall.