A multi-stage sifting circular vibrating screen

Abstract

This utility model relates to the field of vibrating screen technology, specifically a multi-stage circular vibrating screen. It includes a processing cylinder, a feed pipe located at the top of the processing cylinder, a vibrating screening mechanism, a turning mechanism, and a linkage shaft. The vibrating screening mechanism is mounted on the processing cylinder; the turning mechanism is slidably mounted on the vibrating screening mechanism; and the linkage shaft is mounted on the vibrating screening mechanism. Through the vibrating screening mechanism, motor two drives the vibrating block to rotate. During rotation, the vibrating block drives the screening plate two to vibrate via a fixed disc. Screening plate two, via the linkage shaft, simultaneously drives screening plate one and screening plate three to vibrate, thereby performing multi-stage screening of the material. Thus, a single device can complete coarse, medium, and fine screening. Furthermore, the high-frequency vibration causes the material to undergo a throwing motion on the screen surface, accelerating screening. During multi-stage screening, materials of different particle sizes quickly separate into layers, avoiding clogging, dispersing the material's impact force, and reducing wear on single-layer screens.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to a multi-stage circular vibrating screen. Background Technology

[0002] Multi-stage circular vibrating screens, also known as multi-layer circular vibrating screens or circular multi-layer screens, are a type of efficient and versatile particle grading equipment. They utilize the excitation force generated by a vibrating motor as a power source, causing the material on the screen surface to undergo three-dimensional motion in the horizontal, vertical, and inclined directions, thereby achieving rapid separation and screening of dry or wet materials into 2-6 different particle size classes.

[0003] Chinese Patent No. CN213825853U discloses a vibrating screen with a multi-stage screening structure, including a base assembly, a motor, and a vibrator. A screening component is fixedly connected above the base assembly. The screening component includes a first grading plate, a second grading plate fixedly connected above the first grading plate by a fixing clip, and a third grading plate fixedly connected above the second grading plate by a fixing clip. A hopper is fixedly connected to the left side of the third grading plate. The motor is disposed above the base assembly, and the vibrator is fixedly connected to the other end of the motor. A buffer assembly is fixedly connected to the outside of the first grading plate. This utility model features an assembled multi-stage screening structure, enabling multi-stage screening of sand and gravel. Furthermore, the number of screening layers can be adjusted according to actual usage through disassembly and reassembly, improving the usability of the device.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: the existing multi-stage screening devices cannot drive the material to vibrate and screen, which makes the screening plate easy to be jammed by the material, affecting subsequent screening work. At the same time, the material cannot be spread out during the screening process, which easily leads to material accumulation and further affects the screening effect. Utility Model Content

[0005] The purpose of this invention is to address the problem in the prior art that materials cannot be screened by multi-stage vibration and that the materials are spread out during screening, and to propose a multi-stage circular vibrating screen.

[0006] The technical solution of this utility model: A multi-stage screening circular vibrating screen, comprising a processing cylinder and a feed pipe disposed at the top of the processing cylinder; further comprising:

[0007] Vibrating screening mechanism, which is installed on the processing cylinder, is used to classify and screen materials by vibration;

[0008] The material turning mechanism is slidably mounted on the vibrating screening mechanism and is used to rotate to turn and agitate the material at each level to assist in screening.

[0009] The system includes a linkage shaft mounted on the vibrating screening mechanism. A first screening plate is slidably mounted on the top of the linkage shaft, a second screening plate is slidably mounted on the outer side of the linkage shaft and located below the first screening plate, and a third screening plate is slidably mounted on the bottom of the linkage shaft and located below the second screening plate. The outer side of each screening plate is slidably connected to the inner side of the processing cylinder. Each screening plate is provided with screening holes, and the screening holes become smaller as they go down. The three screening plates vibrate under the drive of the vibrating screening mechanism to screen the material.

[0010] Preferably, a discharge pipe is provided on the outside of the processing cylinder.

[0011] Preferably, the vibration screening mechanism includes a power component and a vibration component;

[0012] The power unit is located on the outside of the treatment cylinder and is used to provide power to the vibration assembly;

[0013] The vibration assembly is located inside the processing cylinder and is used for graded vibration screening of materials.

[0014] Preferably, the power assembly includes a second motor, a fixed frame, and a second rotating shaft;

[0015] The fixed frame is located on the outside of the processing unit, the second motor is located on the side of the fixed frame, the second rotating shaft is located at the output end of the second motor, and a vibration block is located at the end of the second rotating shaft away from the second motor.

[0016] Preferably, the vibration assembly includes a connecting block and a baffle;

[0017] The connecting block is slidably mounted on the processing cylinder, the baffle is located on the outside of the connecting block, the side of the connecting block away from the baffle is provided with a fixed plate, the side of the fixed plate away from the connecting block is provided with a sliding block, the side of the sliding block is provided with a slide rail, and the end of the sliding block is provided with a spring.

[0018] Preferably, the material turning mechanism includes a motor and a rotating shaft;

[0019] Motor 1 is located inside the processing cylinder and at the bottom. Rotary shaft 1 is located at the output end of motor 1. A connecting ring is provided on the outer side of rotary shaft 1. The outer side of the connecting ring is slidably connected to the inner side of the linkage shaft. A rotating ring is provided on the outer side of the linkage shaft. A rotating frame is provided on the outer side of the rotating ring.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] 1. Through the setting of the vibration screening mechanism, motor 2 drives the vibrating block to rotate. During the rotation of the vibrating block, the vibrating block drives the screening plate 2 to vibrate through the fixed plate. Screening plate 2 drives screening plate 1 and screening plate 3 to vibrate simultaneously through the linkage shaft, thereby performing multi-stage screening of materials. In this way, coarse, medium and fine screening can be completed by a single machine. Moreover, the high-frequency vibration makes the material throw on the screen surface, which accelerates the screening. During multi-stage screening, materials of different particle sizes are quickly separated into layers, avoiding blockage and dispersing the impact force of the material, and also reducing the wear of single-layer screens.

[0022] 2. With the addition of a material turning mechanism, the motor drives the rotating frame to spread the material evenly on each screening plate. This ensures uniform material distribution on the screen surface, fully utilizing the entire screen surface for screening and enhancing the loosening effect of the material. Fine particles are separated from the gaps between coarse particles more quickly and fall off. At the same time, through periodic turning, the material forms a dynamic flow on the screen surface, eliminating blind spots and preventing large particles from covering small particles or small particles from repeatedly impacting the screen due to local accumulation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0024] Figure 2 for Figure 1 Internal structure diagram;

[0025] Figure 3 This is a schematic diagram of the material turning mechanism;

[0026] Figure 4 for Figure 3 Enlarged diagram of A in the middle;

[0027] Figure 5 This is a schematic diagram of the vibration screening mechanism;

[0028] Figure 6 This is a schematic diagram of the rear structure of the vibration screening mechanism.

[0029] Reference numerals in the attached drawings: 1. Processing cylinder; 2. Feed pipe; 3. Discharge pipe; 401. Motor 1; 402. Rotating shaft 1; 403. Connecting ring; 404. Rotating frame; 405. Rotating ring; 501. Linkage shaft; 502. Screening plate 1; 503. Motor 2; 504. Rotating shaft 2; 505. Vibrating block; 506. Fixed frame; 507. Sliding block; 508. Fixed disc; 509. Slide rail; 510. Spring; 511. Connecting block; 512. Baffle; 513. Screening plate 2; 514. Screening plate 3. Detailed Implementation

[0030] Example 1

[0031] like Figures 1-6As shown, the present invention proposes a multi-stage screening circular vibrating screen, which includes a processing cylinder 1, a feed pipe 2 disposed at the top of the processing cylinder 1, a vibrating screening mechanism, a turning mechanism, and a linkage shaft 501.

[0032] The vibration screening mechanism is installed on the processing cylinder 1 and is used for graded vibration screening of materials;

[0033] The material turning mechanism is slidably mounted on the vibrating screening mechanism and is used to rotate to turn and agitate the material at each level to assist in screening.

[0034] The linkage shaft 501 is mounted on the vibrating screening mechanism. A screening plate 502 is slidably mounted on the top of the linkage shaft 501. A screening plate 513 is slidably mounted on the outside of the linkage shaft 501 and located below the screening plate 502. A screening plate 514 is slidably mounted on the bottom of the linkage shaft 501 and located below the screening plate 513. The outside of each screening plate is slidably connected to the inside of the processing cylinder 1. Each screening plate is provided with screening holes, and the screening holes become smaller as they go down. The three screening plates vibrate under the drive of the vibrating screening mechanism to screen the material.

[0035] The outer side of the processing cylinder 1 is provided with discharge pipes 3. There are three discharge pipes 3, each located on the side of a screening plate, which are used to guide the screened material out of the processing cylinder 1 and collect it.

[0036] The vibrating screening mechanism includes a power component and a vibration component. The power component is located on the outside of the processing cylinder 1 and provides power to the vibration component. The vibration component is located on the inside of the processing cylinder 1 and is used for grading and vibrating screening of materials. The power component includes a second motor 503, a fixed frame 506, and a second rotating shaft 504. The fixed frame 506 is located on the outside of the processing cylinder, the second motor 503 is located on the side of the fixed frame 506, and the second rotating shaft 504 is located at the output end of the second motor 503. A vibrating block 505 is provided at the end of the second rotating shaft 504 away from the second motor 503. The vibrating disk is polygonal, with one side of each corner being an arc surface and the other side being a vertical surface. Whenever the arc surface contacts the fixed disk 508, it drives the fixed plate to press down. When the arc surface disengages from the fixed disk 508, the fixed disk 508 rebounds under the action of the spring 510, thereby vibrating. The vibration assembly includes a connecting block 511 and a baffle 512. The connecting block 511 is slidably mounted on the processing cylinder 1, and its end is connected to the outer side of the screening plate 513. The baffle 512 is located on the outer side of the connecting block 511, and its side surface is in contact with the outer side of the processing cylinder 1, thereby sealing the processing cylinder 1 to prevent material leakage. A fixed plate 508 is provided on the side of the connecting block 511 away from the baffle 512, and a sliding block 507 is provided on the side of the fixed plate 508 away from the connecting block 511. A slide rail 509 is provided on the side of the sliding block 507. A spring 510 is provided at the end of the device. The motor 503 drives the rotating shaft 504 to rotate, and the rotating shaft 504 drives the vibrating block 505 to rotate. When the vibrating block 505 rotates, the arc-shaped surface of the extended end contacts the fixed plate 508 and gradually presses the fixed plate 508 downward. The fixed plate 508 drives the sliding block 507 and the screening plate 513 downward. At this time, the spring 510 deforms. When the arc-shaped surface disengages from the fixed plate 508, the fixed plate 508 quickly rebounds under the action of the spring 510, causing the screening plate 502, the screening plate 513 and the screening plate 514 to vibrate.

[0037] Example 2

[0038] like Figures 3-4 As shown, this utility model proposes a multi-stage screening circular vibrating screen. Compared with Embodiment 1, this embodiment details the structure of the material turning mechanism.

[0039] The material turning mechanism includes a motor 401 and a rotating shaft 402. The motor 401 is located inside the processing cylinder 1 at the bottom. The rotating shaft 402 is located at the output end of the motor 401. A connecting ring 403 is provided on the outer side of the rotating shaft 402. The outer side of the connecting ring 403 is slidably connected to the inner side of the linkage shaft 501. A rotating ring 405 is provided on the outer side of the linkage shaft 501. A rotating frame 404 is provided on the outer side of the rotating ring 405. The motor 401 drives the rotating shaft 402 to rotate. The rotating shaft 402 drives the linkage shaft 501 to rotate through the connecting ring 403. The linkage shaft 501 drives the rotating frame 404 to rotate through the rotating ring 405. This process turns and stirs the material during screening, preventing the material from piling up.

[0040] In summary, when using this utility model, the material is poured into the processing cylinder 1 through the feed pipe 2, and then motors 401 and 503 are started simultaneously. Motor 503 drives shaft 504 to rotate, which in turn drives vibrating block 505 to rotate. When vibrating block 505 rotates, the arc-shaped surface of its extended end contacts the fixed plate 508 and gradually presses it downwards. The fixed plate 508 drives sliding block 507 and screening plate 513 downwards. At this time, spring 510 deforms. When the arc-shaped surface disengages from the fixed plate 508, the fixed plate 508 will contact the vertical extension end. The materials come into direct contact and will quickly rebound under the action of spring 510, causing the screening plates 502, 513 and 514 to vibrate. At the same time, motor 401 drives shaft 402 to rotate, shaft 402 drives linkage shaft 501 to rotate through connecting ring 403, and linkage shaft 501 drives rotating frame 404 to rotate through rotating ring 405. This stirs the materials during the screening process. All three screening plates are placed at an incline, and the screened materials slide down the inclined surface into the discharge pipe 3, where they are collected.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A multi-stage circular vibrating screen, comprising a processing cylinder (1) and a feed pipe (2) disposed at the top of the processing cylinder (1); characterized in that, Also includes: Vibration screening mechanism, which is set on the processing cylinder (1), is used to classify and vibrate the material. The material turning mechanism is slidably mounted on the vibrating screening mechanism and is used to rotate to turn and agitate the material at each level to assist in screening. And a linkage shaft (501), which is set on the vibrating screening mechanism. A screening plate 1 (502) is slidably set on the top of the linkage shaft (501). A screening plate 2 (513) is slidably set on the outside of the linkage shaft (501) and located below the screening plate 1 (502). A screening plate 3 (514) is slidably set on the bottom of the linkage shaft (501) and located below the screening plate 2 (513). The outside of each screening plate is slidably connected to the inside of the processing cylinder (1). Each screening plate is provided with screening holes, and the screening holes are smaller as they go down. The three screening plates vibrate under the drive of the vibrating screening mechanism to screen the material. The vibration screening mechanism includes a power component and a vibration component; The power assembly is located on the outside of the processing cylinder (1) and is used to provide power to the vibration assembly; the power assembly includes a second motor (503), a fixed frame (506) and a second rotating shaft (504). The fixed frame (506) is located on the outside of the processing unit, the second motor (503) is located on the side of the fixed frame (506), the second rotating shaft (504) is located at the output end of the second motor (503), and a vibration block (505) is provided at the end of the second rotating shaft (504) away from the second motor (503). The vibration assembly is located inside the processing cylinder (1) and is used to classify and screen materials by vibration. The vibration assembly includes a connecting block (511) and a baffle (512). The connecting block (511) is slidably disposed on the processing cylinder (1), the baffle (512) is disposed on the outside of the connecting block (511), the side of the connecting block (511) away from the baffle (512) is provided with a fixed plate (508), the side of the fixed plate (508) away from the connecting block (511) is provided with a sliding block (507), the side of the sliding block (507) is provided with a slide rail (509), and the end of the sliding block (507) is provided with a spring (510).

2. The circular vibrating screen for multi-stage screening according to claim 1, characterized in that, A discharge pipe (3) is provided on the outside of the processing cylinder (1).

3. The circular vibrating screen for multi-stage screening according to claim 1, characterized in that, The material turning mechanism includes a motor (401) and a rotating shaft (402). Motor 1 (401) is located inside the processing cylinder (1) and at the bottom. Rotary shaft 1 (402) is located at the output end of motor 1 (401). A connecting ring (403) is provided on the outside of the rotating shaft 1 (402). The outside of the connecting ring (403) and the inside of the linkage shaft (501) are slidably connected. A rotating ring (405) is provided on the outside of the linkage shaft (501). A rotating frame (404) is provided on the outside of the rotating ring (405).

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