An automatic sifter

Abstract

The utility model relates to a sieving equipment technical field especially, is involved in an automatic sieving machine, including frame, casing, upper screen, lower screen, electric ring and rotation drive component, casing and frame rotation connection, upper screen, lower screen and electric ring are arranged in casing from top to bottom in proper order, upper screen and casing elastic connection, lower screen and casing fixed connection, electric ring and casing fixed connection, electric ring is used for ionizing air to produce positive and negative electric charge to offset the static electricity on rare earth oxide particle, rotation drive component and frame fixed connection, rotation drive component and casing transmission connection, the side wall of casing is equipped with feed inlet, feed inlet is located between upper screen and lower screen, the bottom surface of casing is equipped with the discharge gate, and the mechanical automatic is completed to press down and rotate screening, and the low -efficient manual pressing friction operation is completely replaced, and the production efficiency is improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, and in particular to an automatic screening machine. Background Technology

[0002] In the processing of rare earth oxide lumps, sieving is a crucial step used to separate materials according to particle size. Currently, conventional sieving methods rely heavily on manual labor, requiring operators to manually press and rub the lumps on the screen to break them down and pass them through. This manual operation method has many drawbacks: First, it is extremely inefficient, labor-intensive, and costly; second, during sieving, a large amount of fine powder is easily generated and floats in the air, causing material loss and potentially leading to occupational health problems if inhaled by operators; furthermore, traditional screen fixing methods are unreliable and can easily detach under vibration or pressure, causing the screened and unscreened materials to mix, severely affecting the sieving effect and product quality. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the problem that the traditional screen fixing method in the prior art is unreliable and is easy to fall off under vibration or pressure, resulting in the mixing of screened and unscreened materials, which seriously affects the screening effect and product quality, an automatic screening machine is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an automatic sieving machine, including a frame, a housing, an upper screen, a lower screen, an electric coil, and a rotary drive assembly. The housing and the frame are rotatably connected. The upper screen, the lower screen, and the electric coil are arranged in the housing from top to bottom. The upper screen and the housing are elastically connected. The lower screen and the housing are fixedly connected. The electric coil and the housing are fixedly connected. The electric coil is used to ionize the air to generate positive and negative charges to cancel the static electricity on the rare earth oxide particles. The rotary drive assembly is fixedly connected to the frame and is driven by the housing. The rotary drive assembly is used to provide power for the rotation of the housing. The upper screen can move away from or closer to the lower screen under the cooperation of rotational force and elastic force. The shell has a feed inlet on its side wall, located between the upper and lower screens, and a discharge outlet on its bottom surface. The mechanical automatic pressing and rotating screening completely replaces the inefficient manual pressing and friction operation, significantly improving production efficiency and reducing the labor intensity and skill requirements of workers.

[0005] To address the issue of how to specifically achieve the elastic connection of the upper screen to provide stable and reliable downward pressure and ensure effective grinding of lumpy materials, the sieving machine further includes an elastic element, one end of which is fixedly connected to the housing and the other end of which is fixedly connected to the upper screen.

[0006] To address the issues of ensuring the stability and straightness of the upper screen during its up-and-down movement, preventing deflection or jamming, and guaranteeing uniform pressure transmission, the sieving machine further includes a slider and a matching slide rail. The slide rail is fixedly connected to the housing, the slide rail and the slider are slidably connected, and the slider and the upper screen are fixedly connected.

[0007] To address the issue of providing active and adjustable downward pressure to handle materials of varying hardness or size, thereby enhancing the adaptability and screening power of the equipment, the screening machine further includes a pressure component. The pressure component is fixedly connected to the housing and is located inside the housing, above the upper screen. The pressure component provides power for the upper screen to actively move closer to the lower screen.

[0008] The rotary drive assembly may include a motor, a transmission gear, and an external gear ring, with the external gear ring fixedly connected to the housing, the motor fixedly connected to the frame, the transmission gear mounted on the output shaft of the motor, and the external gear ring meshing with the transmission gear.

[0009] The beneficial effects of this utility model are: the automatic screening machine provided by this utility model can automatically complete the pressing and rotating screening by machinery, completely replacing the inefficient manual pressing and friction operation, significantly improving production efficiency, and reducing the labor intensity and skill requirements of workers; The electric coil can ionize the air and neutralize the static electricity on rare earth oxide particles, fundamentally reducing screen clogging and dust floating caused by electrostatic adsorption. This not only improves the working environment and protects the health of employees, but also reduces material loss. The dynamic motion of the upper screen, generated by the combination of elastic force and centrifugal force, and the rotation of the lower screen, both produce a self-cleaning effect, effectively preventing screen mesh blockage and reducing the frequency of equipment downtime for cleaning and maintenance costs. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a utility model Figure 1 A magnified structural diagram of point A in the middle.

[0012] In the diagram: 1. Frame, 2. Housing, 21. Feed inlet, 22. Discharge outlet, 3. Upper screen, 4. Lower screen, 5. Electric coil, 6. Rotary drive assembly, 61. Motor, 62. Transmission gear, 63. External gear ring, 7. Elastic element, 8. Slider, 9. Slide rail, 10. Pressing component. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0014] like Figure 1 This is a schematic diagram of the structure of this utility model. An automatic sieving machine includes a frame 1, a housing 2, an upper screen 3, a lower screen 4, an electric coil 5, and a rotary drive assembly 6. The housing 2 and the frame 1 are rotatably connected. The upper screen 3, the lower screen 4, and the electric coil 5 are arranged sequentially from top to bottom inside the housing 2. The upper screen 3 and the housing 2 are elastically connected, and the lower screen 4 and the housing 2 are fixedly connected. The electric coil 5 is fixedly connected to the housing 2 and is used to ionize air to generate positive and negative charges to counteract the static electricity on rare earth oxide particles. The rotary drive assembly 6 is fixedly connected to the frame 1 and is also connected to the housing 2 via a transmission connection. The rotary drive assembly 6 is used to provide power for the rotation of the housing 2. The upper screen 3 can move away from or closer to the lower screen 4 under the combined action of rotational force and elastic force. A feed inlet 21 is provided on the side wall of the housing 2, which is located between the upper screen 3 and the lower screen 4. A discharge outlet 22 is provided on the bottom surface of the housing 2, realizing fully automatic screening. Static electricity is eliminated by the electric coil 5, reducing dust and clogging. Dynamic screening is realized through the elastic connection of the upper screen 3 and the rotation drive, and screen falling off is prevented, ensuring screening quality and efficiency.

[0015] like Figure 1 As shown, the screening machine includes an elastic element 7. One end of the elastic element 7 is fixedly connected to the housing 2, and the other end is fixedly connected to the upper screen 3. By setting the elastic element 7, a continuous and flexible downward pressure is provided to the upper screen 3, so that the material can be crushed and screened evenly and fully, while buffering hard impacts and protecting the equipment.

[0016] like Figure 1 , 2 As shown, the screening machine also includes a slider 8 and a slide rail 9 that matches the slider 8. The slide rail 9 is fixedly connected to the housing 2, the slide rail 9 is slidably connected to the slider 8, and the slider 8 is fixedly connected to the upper screen 3. Through the sliding pair structure of the slider 8 and the slide rail 9, precise guidance is provided for the reciprocating motion of the upper screen 3, ensuring smooth movement, uniform pressure application, and improving the reliability of the equipment and the consistency of the screening effect.

[0017] like Figure 1As shown, the screening machine also includes a lower pressing component 10, which is fixedly connected to the housing 2. The lower pressing component 10 is located inside the housing 2 and above the upper screen 3. The lower pressing component 10 is used to provide power for the upper screen 3 to actively approach the lower screen 4. The lower pressing component 10 can be one of a cylinder, hydraulic cylinder, electric push rod, or screw drive mechanism. By adding an independent lower pressing component 10, the positive pressure of the upper screen 3 on the material can be actively controlled and enhanced, thereby improving the grinding and crushing capacity, enabling the equipment to handle more difficult-to-screen block materials, and broadening the application range.

[0018] The rotary drive assembly 6 can be a motor 61, a transmission gear 62, and an external gear ring 63. The external gear ring 63 is fixedly connected to the housing 2, and the motor 61 is fixedly connected to the frame 1. The transmission gear 62 is mounted on the output shaft of the motor 61, and the external gear ring 63 meshes with the transmission gear 62. The gear transmission method (motor 61 - transmission gear 62 - external gear ring 63) is adopted, which has a precise transmission ratio, smooth and reliable power transmission, and a compact structure. It can withstand the vibration and load brought by the screening operation, ensuring the long-term stable operation of the equipment.

[0019] Working process: Start the equipment, the rotary drive assembly 6 starts working, and the drive housing 2 and its internal structure begin to rotate. The rare earth oxide block material to be screened is fed into the feed port 21 on the side wall of the housing, and the material falls between the upper screen 3 and the lower screen 4; During the rotation of the shell 2, the upper screen 3, under the action of centrifugal force and the elastic force of the elastic element 7 (when the downward pressure is insufficient (the situation of rare earth oxide particles can be detected by the sensor), continuously and periodically moves downward toward and presses against the lower screen 4. The blocky material sandwiched between the two screens is subjected to strong squeezing, shearing and grinding action, and is quickly broken. Fine particles of qualified particle size pass through the mesh of the upper screen 3 under pressure and reach the surface of the lower screen 4. The fine particles that reach the lower screen 4 are further screened under the action of centrifugal force generated by the rotation of the shell. Micron-sized particles that meet the final particle size requirements fall through the lower screen 4. During the fall, these particles pass through the energized coil 5. The positive and negative charges generated by the ionization of air by the coil 5 neutralize the static charge carried by the particles themselves, thereby eliminating the static electricity of the particles. The screened material after the static electricity is eliminated continues to fall and is finally discharged from the discharge port 22 on the bottom surface of the shell 2, completing the entire automated screening and static electricity removal process.

[0020] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automatic sieving machine, characterized in that, The device includes a frame (1), a housing (2), an upper screen (3), a lower screen (4), an electric coil (5), and a rotary drive assembly (6). The housing (2) and the frame (1) are rotatably connected. The upper screen (3), the lower screen (4), and the electric coil (5) are arranged sequentially from top to bottom inside the housing (2). The upper screen (3) and the housing (2) are elastically connected. The lower screen (4) and the housing (2) are fixedly connected. The electric coil (5) and the housing (2) are fixedly connected. The electric coil (5) is used to ionize air to generate positive and negative charges to counteract the static electricity on rare earth oxide particles. The rotary drive assembly (6) is fixedly connected to the frame (1) and is driven by the housing (2). The rotary drive assembly (6) is used to provide power for the rotation of the housing (2). The upper screen (3) can move away from or closer to the lower screen (4) under the combined action of rotational force and elastic force. The housing (2) has a feed inlet (21) on its side wall, which is located between the upper screen (3) and the lower screen (4). The housing (2) has a discharge outlet (22) on its bottom surface.

2. The automatic sieving machine as described in claim 1, characterized in that: The sieving machine includes an elastic element (7), one end of which is fixedly connected to the housing (2), and the other end is fixedly connected to the upper screen (3).

3. An automatic sieving machine as described in claim 1, characterized in that: The sieving machine also includes a slider (8) and a slide rail (9) that matches the slider (8). The slide rail (9) is fixedly connected to the housing (2), the slide rail (9) is slidably connected to the slider (8), and the slider (8) is fixedly connected to the upper screen (3).

4. An automatic sieving machine as described in claim 1, characterized in that: The sieving machine also includes a lower pressing component (10), which is fixedly connected to the housing (2). The lower pressing component (10) is located inside the housing (2) and above the upper screen (3). The lower pressing component (10) is used to provide power for the upper screen (3) to actively approach the lower screen (4).

5. An automatic sieving machine as described in claim 1, characterized in that: The rotary drive assembly (6) may be a motor (61), a transmission gear (62) and an external gear ring (63). The external gear ring (63) is fixedly connected to the housing (2), the motor (61) is fixedly connected to the frame (1), the transmission gear (62) is mounted on the output shaft of the motor (61), and the external gear ring (63) meshes with the transmission gear (62).

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