Multi-stage screening device

Abstract

The utility model discloses a multistage screening device which comprises a screening frame, two side edge blocking plates are fixedly connected to the interior of the screening frame, a middle blocking plate is fixedly connected to the interior of the screening frame, a plurality of first screening rods are evenly and fixedly connected between one side edge blocking plate and the middle blocking plate, and a plurality of second screening rods are evenly and fixedly connected between the other side edge blocking plate and the middle blocking plate. And a plurality of second screening rods are uniformly and fixedly connected between the other side edge plugging plate and the middle plugging plate. According to the ore screening device, by arranging the side edge blocking plate, the middle blocking plate, the first screening rods, the second screening rods, the material guiding plate, the arc-shaped guiding plate, the water inlet corrugated pipe, the anti-vibration motor and the spiral conveying rod, along with operation of the vibration motor, ore materials are screened through the multiple first screening rods and the multiple second screening rods, and after water is mixed with the ore materials, the ore materials are screened through the anti-vibration motor. And part of impurities are taken away, fine impurities and dust in the screened ore materials can be cleared away, the purpose of multi-stage screening is achieved, and continuous operation can be conducted.

Description

Technical Field

[0001] This utility model relates to the field of ore screening technology, and in particular to a multi-stage screening device. Background Technology

[0002] Screening is a standardized material classification technology that uses sieves with different apertures to separate materials into multiple particle sizes based on their particle size. In mineral processing, screening can obtain ore powder of the target particle size for subsequent beneficiation or smelting processes.

[0003] For example, a multi-stage screening device with prior art disclosure number CN221208903U, consisting of a second pulley, a linkage rod, gears, and a third pulley, operates by a drive motor that rotates the second pulley. This rotation, in turn, causes the linkage rod to pull the primary screen plate in a reciprocating motion. Simultaneously, the rack at the bottom of the primary screen plate effectively drives the gears in a reciprocating motion. The second pulley, in turn, causes the gears above the fixed frame to move the secondary screen plate in a reciprocating motion, allowing quartz sand to be poured onto the top of the primary screen plate. The sand then undergoes multiple sieving processes through both the primary and secondary screens before being discharged through the hopper. This device significantly improves the convenience of quartz sand purification and simplifies operation. However, in practical use, the materials screened by the secondary and primary screens require separate processing. Furthermore, impurities that cannot pass through the screen holes tend to remain on both screens, necessitating subsequent cleaning and preventing continuous operation. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-stage screening device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage screening device includes a screening frame. Two side sealing plates and a middle sealing plate are fixedly connected inside the screening frame. Multiple first screening rods are uniformly fixedly connected between one side sealing plate and the middle sealing plate. Multiple second screening rods are uniformly fixedly connected between the other side sealing plate and the middle sealing plate. A material guiding mechanism is provided on the outer wall of the screening frame. Four springs are fixedly connected to the bottom of the screening frame, and each spring is fixedly connected to a U-shaped frame in pairs. A conveying mechanism is provided inside the screening frame. Two discharge pipes and two drain pipes are fixedly connected to the bottom of the screening frame. Two vibrating motors are fixedly connected to the outer wall of the screening frame.

[0007] Preferably, the material guiding mechanism includes a material guiding plate, one end of which is fixedly connected to the outer wall of the screening frame. Two supports are fixedly connected to the outer wall of the material guiding plate, and one end of each support is fixedly connected to the outer wall of the screening frame. The material guiding mechanism guides the ore material.

[0008] Preferably, the conveying mechanism includes a spiral conveying rod, four arc-shaped guide plates are fixedly connected inside the screening frame, two water inlet corrugated pipes are fixedly interconnected on the outer wall of the screening frame, a water pump is fixedly interconnected at one end of each of the two water inlet corrugated pipes, an equipment frame is fixedly connected to the outer wall of the screening frame, an anti-vibration motor is fixedly connected inside the equipment frame, and a spiral conveying rod is fixedly connected to one end of the output shaft of the anti-vibration motor. The wet material is conveyed by setting the spiral conveying rod.

[0009] Preferably, the bottom of each of the two U-shaped frames is fixedly connected to a base, which supports the screening frame.

[0010] Preferably, the outer wall of the screening frame has a through hole, and the inner wall of the through hole is rotatably connected to the outer wall of the output shaft of the anti-vibration motor. The anti-vibration motor, through special design and material selection, can maintain stable operation in a vibration environment and reduce the impact of vibration on motor performance. The specific model can be selected according to the actual use.

[0011] Preferably, the outer wall of the spiral conveyor rod is slidably connected to the outer walls of the four arc-shaped guide plates, which are located in pairs on the front and rear sides of the spiral conveyor rod to assist in the stable conveying of ore materials.

[0012] Preferably, the outer wall of the intermediate sealing plate has a circular hole, and a bearing is fixedly connected to the inner wall of the circular hole. The inner ring of the bearing is fixedly connected to the outer wall of the spiral conveying rod, and the spiral conveying rod is stably rotated by setting the bearing.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution incorporates side sealing plates, a middle sealing plate, a first screening rod, a second screening rod, a guide plate, an arc-shaped guide plate, a water inlet corrugated pipe, a vibration-damping motor, and a screw conveyor. As the vibrating motor operates, the ore material is screened through multiple first and second screening rods. After water mixes with the ore material, some impurities are carried away, which helps to clean fine impurities and dust from the screened ore material, achieving the purpose of multi-stage screening and enabling continuous operation. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a multi-stage screening device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of a multi-stage screening device proposed in this utility model;

[0018] Figure 3 This utility model proposes a multi-stage screening device. Figure 2 A magnified structural diagram of part A in the diagram;

[0019] Figure 4 This is a schematic diagram of the arc-shaped guide plate and spiral conveyor rod structure of a multi-stage screening device proposed in this utility model.

[0020] In the diagram: 1. Screening frame; 2. Side sealing plate; 3. Middle sealing plate; 4. First screening rod; 5. Second screening rod; 6. Guide plate; 7. Support; 8. Spring; 9. U-shaped frame; 10. Base; 11. Arc-shaped guide plate; 12. Water inlet corrugated pipe; 13. Equipment frame; 14. Anti-vibration motor; 15. Spiral conveyor rod; 16. Bearing; 17. Discharge pipe; 18. Drainage pipe; 19. Vibration motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Depend on Figures 1-4 As shown, a multi-stage screening device is disclosed, including a screening frame 1. Two side sealing plates 2 are fixedly connected inside the screening frame 1, and the two side sealing plates 2 seal the left and right sides of the screening frame 1. A middle sealing plate 3 is fixedly connected inside the screening frame 1. Multiple first screening rods 4 are evenly fixedly connected between one side sealing plate 2 and the middle sealing plate 3, and multiple second screening rods 5 are evenly fixedly connected between the other side sealing plate 2 and the middle sealing plate 3. The multiple first screening rods 4 and the multiple second screening rods 5 are arranged horizontally for screening ore.

[0023] Four springs 8 are fixedly connected to the bottom of the screening frame 1. The four springs 8 are fixedly connected to U-shaped frames 9 in pairs. The bottom of each of the two U-shaped frames 9 is fixedly connected to a base 10. The bottom of the screening frame 1 is fixedly connected to two discharge pipes 17 and two drain pipes 18. The two drain pipes 18 are made of corrugated metal pipes, and the discharge pipes 17 are at the water outlet. The bottom of the two discharge pipes 17 is facing down. The wet material after screening is transported by two existing belt conveyors. Two vibrating motors 19 are fixedly connected to the outer wall of the screening frame 1. The vibrating motors 19 generate vibration by the centrifugal force generated when the eccentric blocks installed at both ends of the rotor shaft rotate at high speed. The specific model can be selected according to the actual situation.

[0024] The outer wall of the screening frame 1 is provided with a material guiding mechanism, which includes a material guiding plate 6. One end of the material guiding plate 6 is fixedly connected to the outer wall of the screening frame 1. Two supports 7 are fixedly connected to the outer wall of the material guiding plate 6. One end of each of the two supports 7 is fixedly connected to the outer wall of the screening frame 1, and the two supports 7 support the material guiding plate 6.

[0025] The screening frame 1 is equipped with a conveying mechanism, which includes a spiral conveying rod 15. Four arc-shaped guide plates 11 are fixedly connected inside the screening frame 1. Two water inlet corrugated pipes 12 are fixedly connected to the outer wall of the screening frame 1. A water pump is fixedly connected to one end of each of the two water inlet corrugated pipes 12. The water pump is placed near the water source. The water inlet corrugated pipes 12 have shock resistance, mainly through their own elasticity.

[0026] The outer wall of the screening frame 1 is fixedly connected to the equipment frame 13, and the inside of the equipment frame 13 is fixedly connected to the anti-vibration motor 14. The outer wall of the screening frame 1 has a through hole, and the inner wall of the through hole is rotatably connected to the outer wall of the output shaft of the anti-vibration motor 14.

[0027] One end of the output shaft of the anti-vibration motor 14 is fixedly connected to a spiral conveyor rod 15. When the anti-vibration motor 14 is running, it drives the spiral conveyor rod 15 to rotate. The spiral conveyor rod 15 rotates and conveys the ore material to the left. The outer wall of the spiral conveyor rod 15 is slidably connected to the outer wall of the four arc-shaped guide plates 11. The outer wall of the middle sealing plate 3 has a round hole. The inner wall of the round hole is fixedly connected to a bearing 16. The inner ring of the bearing 16 is fixedly connected to the outer wall of the spiral conveyor rod 15.

[0028] Working principle: In use, the screening frame 1 is tilted with its right side facing down, which facilitates subsequent material discharge. The tilt angle should not be too large. The ore to be screened enters from the left side of the screening frame 1. The ore material moves through multiple first screening rods 4. At this time, the vibration motors 19 on the front and rear sides of the screening frame 1 operate, and with the cooperation of multiple springs 8, the screening frame 1 vibrates. Smaller ore materials and impurities fall into the interior of the screening frame 1 through the gaps between the multiple first screening rods 4. The subsequent ore material is then screened through the gaps between multiple second screening rods 5. The gaps between the multiple second screening rods 5 are larger than the gaps between the multiple first screening rods 4, which is used to screen larger ore materials, while the rest are not screened. The ore material that passes through the screening process is discharged through the guide plate 6. The screened ore material falls between four arc-shaped guide plates 11, and the screening frame 1 is divided into two areas by the middle sealing plate 3. As the anti-vibration motor 14 operates, it drives the spiral conveyor rod 15 to rotate. The spiral conveyor rod 15 rotates and conveys the ore material to the left. During the conveying process, the water pump starts in advance to deliver external water to the screening frame 1 through the water inlet corrugated pipe 12. After the water mixes with the ore material, some impurities are carried away, which is beneficial for cleaning the screened ore material. The ore material after the two screenings is discharged through the two discharge pipes 17 by the rotation of the spiral conveyor rod 15, while the sewage is discharged through the two drain pipes 18.

[0029] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0030] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-level screening device, comprising a screening frame (1), characterized in that, The screening frame (1) has two side sealing plates (2) fixedly connected inside, and a middle sealing plate (3) fixedly connected inside. One side sealing plate (2) and the middle sealing plate (3) are evenly fixedly connected to a plurality of first screening rods (4), and the other side sealing plate (2) and the middle sealing plate (3) are evenly fixedly connected to a plurality of second screening rods (5). The outer wall of the screening frame (1) is provided with a material guiding mechanism. The bottom of the screening frame (1) is fixedly connected to four springs (8). The four springs (8) are fixedly connected to a U-shaped frame (9) in pairs. The screening frame (1) has a conveying mechanism inside. The bottom of the screening frame (1) is fixedly connected to two discharge pipes (17) and two drain pipes (18). The outer wall of the screening frame (1) is fixedly connected to two vibration motors (19).

2. The multi-stage screening device according to claim 1, characterized in that, The material guiding mechanism includes a material guiding plate (6), one end of which is fixedly connected to the outer wall of the screening frame (1). Two supports (7) are fixedly connected to the outer wall of the material guiding plate (6), and one end of each support (7) is fixedly connected to the outer wall of the screening frame (1).

3. The multi-stage screening device according to claim 1, characterized in that, The conveying mechanism includes a spiral conveying rod (15), four arc-shaped guide plates (11) are fixedly connected inside the screening frame (1), two water inlet corrugated pipes (12) are fixedly connected to the outer wall of the screening frame (1), and a water pump is fixedly connected to one end of each of the two water inlet corrugated pipes (12). An equipment frame (13) is fixedly connected to the outer wall of the screening frame (1), and an anti-vibration motor (14) is fixedly connected inside the equipment frame (13). The spiral conveying rod (15) is fixedly connected to one end of the output shaft of the anti-vibration motor (14).

4. The multi-stage screening device according to claim 1, characterized in that, The bottom of each of the two U-shaped frames (9) is fixedly connected to a base (10).

5. The multi-stage screening device according to claim 3, characterized in that, The outer wall of the screening box (1) has a through hole, and the inner wall of the through hole is rotatably connected to the outer wall of the output shaft of the anti-vibration motor (14).

6. The multi-stage screening device according to claim 3, characterized in that, The outer wall of the spiral conveyor rod (15) is slidably connected to the outer walls of the four arc-shaped guide plates (11).

7. The multi-stage screening device according to claim 3, characterized in that, The outer wall of the intermediate sealing plate (3) has a circular hole, and the inner wall of the circular hole is fixedly connected to a bearing (16). The inner ring of the bearing (16) is fixedly connected to the outer wall of the spiral conveying rod (15).

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