Screening device suitable for large particle grading

Abstract

The utility model discloses a screening device suitable for grading large particles, which comprises a frame body, one end of the frame body is hinged with an adjusting frame, the adjusting frame is provided with a pair of supporting plates, a roller is rotatably connected between the supporting plates through a rotating shaft, a pair of conical sieves with gradually decreased sieve pores are arranged in the roller, and the conical sieves are arranged on the frame body. The roller is provided with a gear ring and a discharging port, the gear ring is matched with a gear, the gear is connected with a motor, the lower end of the adjusting frame is hinged to one end of a telescopic rod, and the other end of the telescopic rod is hinged to the frame body. The device has the advantages of reducing impact damage, improving the grading screening efficiency and dynamically adjusting the angle.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing and screening device technology, and more specifically, to a screening device suitable for large particle classification. Background Technology

[0002] Currently, in industrial production, especially in industries involving particulate material processing such as mining and construction, it is often necessary to classify and screen large particles. Traditional screening devices have many limitations when processing large particles. Common flat-plate screens have low throughput for large particles; they also lack adjustment flexibility, with a fixed screening angle that cannot dynamically adjust the screening speed and tilt angle according to material characteristics. While some vibrating screens can improve screening efficiency to some extent, they lack sufficient control over the impact force during the screening process for large particles, which may lead to excessive material breakage and affect product quality.

[0003] In summary, the following technical problems exist:

[0004] Flat screen screening equipment has a low throughput for large particles.

[0005] It has poor adjustment flexibility, the screening angle is fixed, and it is impossible to dynamically adjust the screening speed and tilt angle according to the material characteristics.

[0006] While some vibrating screening equipment can improve screening efficiency to a certain extent, it may not be able to control the impact force during the screening of large particles, which may lead to excessive crushing of materials and affect product quality. Utility Model Content

[0007] The main objective of this invention is to provide a screening device suitable for classifying large particles, thereby addressing at least one of the following technical problems in existing flat-panel screen screening equipment: low throughput for large particles; poor adjustment flexibility; fixed screening angle, making it impossible to dynamically adjust screening speed and tilt angle according to material characteristics; and the fact that while some vibrating screens can improve screening efficiency to a certain extent, they lack sufficient control over the impact force during the screening process of large particles, which may lead to excessive material breakage and affect product quality.

[0008] To achieve the above objectives, according to one aspect of the present invention, a screening device suitable for large particle classification is provided, comprising: a frame, an adjusting frame hinged to one end of the frame, a pair of support plates on the adjusting frame, a roller rotatably connected between the support plates via a rotating shaft, a pair of conical sieves with decreasing sieve apertures inside the roller, a gear ring and a discharge port on the roller, the gear ring engaging with a gear, the gear being connected to a motor, the lower end of the adjusting frame hinged to one end of a telescopic rod, and the other end of the telescopic rod hinged to the frame.

[0009] Preferably, one end of the roller is provided with a hopper, and the conical tip of the conical screen faces the hopper.

[0010] Preferably, the conical screen includes a first screen and a second screen, which divide the inside of the drum into a first hopper, a second hopper, and a third hopper.

[0011] Preferably, the aperture size of the first screen is larger than that of the second screen. The first screen is used to pass through medium-sized and small-sized particles, and the second screen is used to pass through small-sized particles.

[0012] Preferably, the discharge port is located at the bottom end of the conical screen, opposite to the tip.

[0013] Preferably, the discharge port is equipped with an automatic discharge control gate.

[0014] Preferably, the adjusting frame is provided with a flexible guide cylinder, the flexible guide cylinder has a feeding channel, and a material transport trolley is provided at the lower end of the flexible guide cylinder.

[0015] Preferably, the motor drives the gear to rotate, the gear drives the gear ring to rotate, the gear ring drives the drum to rotate, and the drum drives the material to pass through the conical screen for grading and screening in sequence, and then discharges the material through the corresponding discharge port after screening.

[0016] Preferably, the telescopic rod is an electric telescopic rod, which is used to lift the adjustment frame and thus adjust the tilt angle of the roller.

[0017] Preferably, the roller is inclined.

[0018] The application of the technical solution of this utility model has the following technical effects:

[0019] This patented technology effectively improves the screening throughput of large particles and reduces screen clogging by using a drum with a pair of conical screens featuring decreasing aperture sizes. The conical screen structure allows materials to be screened progressively during drum rotation, providing a more efficient screening path for particles of different sizes and thus improving screening efficiency.

[0020] By utilizing the different sizes of sieve openings in the first and second sieves, precise grading of large particles can be achieved, accurately distinguishing between large, medium, and small particles, thus meeting the requirements for fine grading of materials in industrial production.

[0021] Throughout the screening process, the material is screened smoothly inside the drum as the drum rotates. Compared with vibrating screening equipment, this reduces excessive impact between materials, lowers the risk of excessive material breakage, and ensures product quality.

[0022] The motor drives the gears and gear rings, which in turn drive the drum to rotate. This power transmission method can operate stably and efficiently with good controllability, enabling the screening device to meet the needs of large-scale industrial production, improving the overall working capacity, and adapting to different working conditions by adjusting the tilt angle of the drum. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a screening device suitable for large particle classification according to the present invention is shown.

[0025] Figure 2 It shows Figure 1 A side view of a screening device suitable for large particle classification.

[0026] Figure 3 It shows Figure 1 Front view of a screening device suitable for large particle classification;

[0027] Figure 4 It shows Figure 1 Left view of a screening device suitable for large particle classification;

[0028] Figure 5 It shows Figure 1 A top view of a screening device suitable for large particle classification;

[0029] Figure 6 It shows Figure 1 A bottom view of a screening device suitable for large particle classification.

[0030] Figure 7 It shows Figure 1 Right view of a screening device suitable for large particle classification;

[0031] Figure 8 It shows Figure 1 A view of the drum structure of a screening device suitable for large particle classification;

[0032] Figure 9 It shows Figure 1 A view of a conical screen structure suitable for screening devices for large particle classification.

[0033] The above figures include the following reference numerals:

[0034] Frame 1; Telescopic rod 2; Adjusting frame 3; Hopper 4; Support plate 5; Drum 6; Discharge port 7; Gear ring 8; Gear 9; Motor 10; Hinge shaft 11; Bracket 12; Flexible guide cylinder 13; Rotating shaft 14; Discharge channel 15; Conical screen 16; Screen hole 17; First hopper 18; Second hopper 19; Third hopper 20; Large particles 21; Medium particles 22; Small particles 23. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] like Figures 1 to 9 As shown, this utility model embodiment provides a screening device suitable for large particle grading, including: a frame 1, an adjusting frame 3 hinged to one end of the frame 1, a pair of support plates 5 on the adjusting frame 3, a roller 6 rotatably connected between the support plates 5 via a rotating shaft 14, a pair of conical sieves 16 with decreasing sieve holes 17 inside the roller 6, a gear ring 8 and a discharge port 7 on the roller 6, the gear ring 8 cooperating with a gear 9, the gear 9 being connected to a motor 10, the lower end of the adjusting frame 3 being hinged to one end of a telescopic rod 2, and the other end of the telescopic rod 2 being hinged to the frame 1.

[0037] In this embodiment, a hopper 4 is provided at one end of the drum 6, and the conical tip of the conical screen 16 faces the hopper 4. The conical screen 16 includes a first screen and a second screen, which divide the interior of the drum 6 into a first hopper 18, a second hopper 19, and a third hopper 20. The screen aperture 17 of the first screen is larger than that of the second screen. The first screen is used to pass through medium-sized particles 22 and small particles 23, while the second screen is used to pass through small particles 23. The discharge port 7 is located near the bottom end of the conical screen 16 opposite to the tip. An automatic discharge control gate is provided at the discharge port 7. A flexible guide cylinder 13 is provided on the adjusting frame 3. The flexible guide cylinder 13 has a discharge channel 15, and a material transport trolley is provided at the lower end of the flexible guide cylinder 13. The motor 10 drives the gear 9 to rotate, the gear 9 drives the gear ring 8 to rotate, the gear ring 8 drives the drum 6 to rotate, and the drum 6 carries the material through the conical screen 16 for grading and screening. After screening, the material is discharged through the corresponding discharge port 7. Telescopic rod 2 is an electrically operated telescopic rod, which is used to lift and adjust the adjusting frame 3, thereby adjusting the tilt angle of roller 6. Roller 6 is tilted.

[0038] In this embodiment, large particulate materials 21 can be processed efficiently, screen clogging can be avoided, screening throughput can be improved, and large particulate materials 21 can be accurately graded. Particles of different sizes, such as large, medium and small, can be accurately distinguished. Excessive crushing of materials can be reduced during the screening process, product quality can be guaranteed, and the working capacity of the screening device under large processing capacity can be improved to meet the high efficiency requirements of industrial production.

[0039] In this embodiment, the frame 1 serves as the supporting structure for the entire screening device, providing an installation foundation for other components and ensuring the stability of the device. A stable frame 1 ensures that the positions of each component are fixed during operation, enabling the entire screening device to operate normally and serving as a prerequisite for the functioning of other components. The telescopic rod 2 is an electrically operated telescopic rod, which adjusts the tilt angle of the drum 6 via the lifting and adjusting frame 3 to adapt to different material characteristics and screening requirements. The adjustable tilt angle of the drum 6 optimizes the movement trajectory of materials within the drum 6, improving screening efficiency and increasing the applicability of the device. One end of the adjusting frame 3 is hinged to the frame 1, and the other end is equipped with components such as the support plate 5. This supports the drum 6 and adjusts its tilt angle under the action of the telescopic rod 2, enabling flexible adjustment of the position and angle of the drum 6 and providing mechanical structural support for optimizing the screening process.

[0040] In this embodiment, the hopper 4 is located at one end of the drum 6 and is used to convey the material to be screened into the drum 6, guiding the material into the drum 6 in an orderly manner to ensure the continuity and stability of the screening process. The support plate 5 is located on the adjusting frame 3 and is rotatably connected to the drum 6 through the rotating shaft 14. It supports the drum 6 and allows it to rotate freely, stabilizing the drum 6 and ensuring that the drum 6 rotates smoothly under the drive of the motor 10. It is a key support component for material screening. The drum 6 is equipped with a conical screen 16, in which the material is classified by the rotation of the drum 6 and the screening by the conical screen 16. It is the core working component of screening. It provides working space for material screening, and its rotation and internal screen structure work together to complete the material classification process.

[0041] In this embodiment, the discharge port 7 is located near the bottom of the conical screen 16 to discharge materials of different particle sizes after screening. Precise positioning at the appropriate location facilitates the smooth discharge of materials of different particle sizes according to the screening results, ensuring the integrity of the screening process. An infrared sensor can be installed at the discharge port 7 to ensure alignment between the discharge port 7 and the flexible guide cylinder 13. The gear ring 8, in conjunction with the gear 9, transmits the power of the motor 10 to the drum 6, causing the drum 6 to rotate. This achieves efficient power transmission from the motor 10 to the drum 6 and is the power transmission link driving the drum 6. The gear 9 is connected to the motor 10 and, through meshing with the gear ring 8, transmits the rotational motion output by the motor 10 to the gear ring 8, thereby driving the drum 6 to rotate. A power transmission bridge is built between the motor 10 and the gear ring 8 to ensure the accuracy and stability of power transmission.

[0042] In this embodiment, the motor 10 serves as the power source for the entire device, providing power for the rotation of the gear 9, gear ring 8, and drum 6. Stable power output is the guarantee of power for the operation of the entire screening device and determines its working efficiency. The hinge shaft 11 is used to connect the frame 1 and the adjusting frame 3, allowing the adjusting frame 3 to rotate around the hinge shaft 11 to achieve tilt angle adjustment. It provides a movable joint for the rotation of the adjusting frame 3 and is a key connecting component for realizing the tilt angle adjustment function of the drum 6. The bracket 12 provides auxiliary support for the device, enhancing the overall stability of the device. Working in conjunction with the frame 1, it further stabilizes the device structure and ensures the stability of the equipment during operation.

[0043] In this embodiment, the flexible guide cylinder 13 has a feeding channel 15, which is set on the adjusting frame 3 and its lower end corresponds to the material transport trolley, used to guide the screened material into the transport trolley. This realizes the smooth transfer of material from the screening device to the transport vehicle, avoids material scattering, and improves material collection efficiency. The rotating shaft 14 connects the support plate 5 and the roller 6, allowing the roller 6 to rotate freely between the support plate 5. It provides a rotating shaft for the rotation of the roller 6, ensuring the flexibility and stability of the roller 6's rotation. The feeding channel 15 is located inside the flexible guide cylinder 13, providing a conveying path for the screened material. It standardizes the material conveying direction, ensures that the material accurately enters the transport trolley, and improves material transfer efficiency.

[0044] In this embodiment, the conical screen 16 includes a first screen and a second screen, with decreasing screen aperture 17, dividing the interior of the drum 6 into different hoppers for material grading and screening. The unique screen aperture 17 design and structural layout enable precise material grading, making it the core screening component for achieving the screening function of this patent. The screen apertures 17 are distributed on the conical screen 16, with the number set according to requirements; different sizes of screen apertures 17 are used to screen materials of different particle sizes. As the direct point of action for material screening, its size design determines the accuracy of material grading. The first hopper 18, formed by the conical screen 16, is used to temporarily store large particles 21. It provides temporary storage space for large particles 21, waiting to be discharged from the corresponding discharge port 7, ensuring the orderliness of the screening process. The second hopper 19, located inside the drum 6, is used to temporarily store medium-sized particles 22 after being screened by the first screen. It collects and temporarily stores medium-sized particles 22, providing space for subsequent discharge and classification. The third hopper 20 is used to temporarily store small particles 23 after being screened by the second screen. Collect small particulate materials 23 for centralized discharge and treatment, and complete the storage process after material classification.

[0045] Large particles 21, larger-sized materials to be screened, are temporarily stored in the first hopper 18 after screening. The characteristics of the material being screened determine the design direction and parameter requirements of the screening device. Medium particles 22, materials with particle sizes between large and small, enter the second hopper 19 after being screened by the first screen. This reflects the finer detail in material grading of this patent, enriching the diversity of screening results. Small particles 23, materials with smaller particle sizes, enter the third hopper 20 after being screened by two stages of screens. This fully presents the final result of material grading, demonstrating the comprehensive processing capability of this patented screening device for materials of different particle sizes.

[0046] Working principle:

[0047] After the motor 10 starts, it outputs rotational power to drive the gear 9 to rotate. The gear 9 meshes with the gear ring 8, transmitting power to the gear ring 8, which in turn drives the drum 6 to rotate around the shaft 14. Large particles 21 to be screened enter the drum 6 from the hopper 4. Due to the inclined setting of the drum 6, and during rotation, the material moves along the inner wall of the drum 6 under the combined action of gravity and centrifugal force. The conical screen 16 inside the drum 6 includes a first screen and a second screen, with the screen aperture 17 decreasing in size. During the movement of the large particles 21, medium particles 22 and small particles 23 with a particle size smaller than the first screen aperture 17 pass through the first screen and enter the second hopper 19, while the large particles 21 remain in the first hopper 18. The material entering the second hopper 19 continues to move, with the small particles 23 with a particle size smaller than the second screen aperture 17 passing through the second screen and entering the third hopper 20, while the medium particles 22 remain in the second hopper 19, achieving graded screening. After the material has been screened, the material in different hoppers is discharged through the discharge port 7 at the corresponding position. If an automatic feeding control gate is installed at the feeding port 7, the timing of material discharge can be controlled as needed. The discharged material falls into the material transport trolley below through the feeding channel 15 of the flexible guide cylinder 13.

[0048] Throughout the screening process, the tilt angle of the drum 6 can be changed by lifting the adjusting frame 3 with the telescopic rod 2 according to the material characteristics and screening requirements, thereby optimizing the movement trajectory of the material in the drum 6 and improving the screening effect.

[0049] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0050] This patent effectively improves the screening throughput of large particles 21 and reduces screen clogging by setting up a drum 6 with a pair of conical screens 16 with decreasing screen holes 17. The conical screen 16 structure allows the material to be screened step by step during the rotation of the drum 6, and particles of different sizes have a more reasonable screening path, thus improving screening efficiency.

[0051] By utilizing the different sizes of sieve openings 17 in the first and second sieves, the large particles 21 are accurately classified, and large particles 21, medium particles 22 and small particles 23 can be accurately distinguished, meeting the requirements for fine classification of materials in industrial production.

[0052] Throughout the screening process, the material is screened smoothly inside the drum 6 as the drum 6 rotates. Compared with vibrating screening equipment, this reduces excessive impact between materials, lowers the risk of excessive material breakage, and ensures product quality.

[0053] Motor 10 drives gear 9 and gear ring 8 to drive drum 6 to rotate. This power transmission method can operate stably and efficiently with good controllability, enabling the screening device to meet the needs of large-scale industrial production, improving the overall working capacity, and adapting to different working conditions by adjusting the tilt angle of drum 6.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A screening device suitable for classifying large particles, characterized in that, include: The frame has an adjustable frame hinged at one end, a pair of support plates on the adjustable frame, and a roller rotatably connected between the support plates via a rotating shaft. The roller contains a pair of conical sieves with decreasing screen holes. The roller has a gear ring and a discharge port. The gear ring engages with a gear, which is connected to a motor. The lower end of the adjustable frame is hinged to one end of a telescopic rod, and the other end of the telescopic rod is hinged to the frame.

2. The screening device suitable for large particle classification as described in claim 1, characterized in that, The drum is equipped with a hopper at one end, and the cone tip of the cone screen faces the hopper.

3. The screening device suitable for large particle classification as described in claim 1, characterized in that, The conical screen includes a first screen and a second screen, which divide the inside of the drum into a first hopper, a second hopper, and a third hopper.

4. The screening device suitable for large particle classification as described in claim 3, characterized in that, The screen aperture size of the first screen is larger than that of the second screen. The first screen is used to pass through medium and small particulate materials, while the second screen is used to pass through small particulate materials.

5. The screening device suitable for large particle classification as described in claim 1, characterized in that, The discharge port is located at the bottom end, near the cone screen and opposite to the tip.

6. The screening device suitable for large particle classification as described in claim 1, characterized in that, An automatic feeding control gate is provided at the feeding port.

7. The screening device suitable for large particle classification as described in claim 1, characterized in that, The adjusting frame is equipped with a flexible guide cylinder, which has a material feeding channel, and a material transport trolley is installed at the lower end of the flexible guide cylinder.

8. The screening device suitable for large particle classification as described in claim 1, characterized in that, The motor drives the gear to rotate, the gear drives the gear ring to rotate, the gear ring drives the drum to rotate, and the drum drives the material to pass through the conical screen for grading and screening in sequence. After screening, the material is discharged through the corresponding discharge port.

9. The screening device suitable for large particle classification as described in claim 1, characterized in that, The telescopic rod is an electric telescopic rod, which is used to lift the adjustment frame and thus adjust the tilt angle of the roller.

10. The screening device suitable for large particle classification as described in claim 1, characterized in that, The roller is set at an angle.

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