A circular vibrating screen with a dust suppression structure

Abstract

This utility model relates to the field of dust prevention technology, specifically a dust prevention structure for a circular vibrating screen. It includes a housing 12 located at the channel outlet below the circular vibrating screen body 11 and support feet for supporting the housing 12. The housing 12 has dust prevention channels 13 matching the number of channels on the circular vibrating screen body 11. The dust prevention components include a first dustproof plate 16 separating two adjacent dust prevention channels 13 and two second dustproof plates 15. This utility model uses several dust prevention channels 13 on the housing 12 to allow material particles discharged from the channel outlet of the circular vibrating screen body 11 to move and be guided to a designated location for collection. After the material is discharged from the circular vibrating screen body 11, the dust prevention components on the dust prevention channels 13 blow up dust from below and then suck in the blown-up dust from above, thereby discharging small particles of dust adhering to the surface of large particles.

Description

Technical Field

[0001] This utility model relates to the field of dust suppression technology, specifically a circular vibrating screen with a dust suppression structure. Background Technology

[0002] A circular vibrating screen is a mechanical device that uses a vibrating motor or exciter to generate a circular vibration trajectory to screen and classify materials. Its working principle is based on the rotational motion of the vibrating motor or exciter, which causes the screen box to vibrate in a circular motion, thereby driving the material to make a circular motion on the screen surface, realizing the separation of materials of different particle sizes, and allowing the separated materials to be removed from different screen surfaces, thus completing the screening. It is widely used in the processing of particulate materials in industries such as mining, metallurgy, building materials, chemicals, and coal.

[0003] However, ordinary circular vibrating screens have an exposed structure. When moving materials, they are very easy to cause small-diameter material particles (the size of dust particles) to be lifted up and form dust. The particles at the top with a diameter larger than the dust particle diameter are also easily shaken away (away from the screen surface due to vibration) and fall to the ground, which greatly affects the working environment and the screening effect.

[0004] Therefore, a circular vibrating screen with a dust suppression structure is needed to solve the dust problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a circular vibrating screen with a dust suppression structure.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A circular vibrating screen with a dust suppression structure includes a circular vibrating screen body, the circular vibrating screen body including a side plate, a vibrating device connected to the side plate and driving the side plate to vibrate, four supporting devices supporting the side plate and evenly distributed on both sides of the side plate, and two screening devices for screening the ore inside the side plate. The side plate is composed of two supporting plates and several connecting columns, and has openings in the upper, lower, left, and right directions. The line connecting the openings on the left and right sides of the side plate is inclined to the lower right. The screening devices are detachable from the inner wall of the side plate. The two screening devices are connected and arranged vertically, dividing the inner cavity of the side plate into two channels for ore movement that are distributed vertically and run from left to right. An upper cover is fixedly connected above the side plate to close its upper opening. A lower shell located below the side plate is fixedly connected between the four support devices, and the lower shell has an opening facing upward. The lower opening of the side plate is inserted into the lower shell. Several upper air pipes arranged in the left-right direction are provided through the top wall of the inner cavity of the upper cover. The upper air pipes are connected to the external positive air pressure pipe. Several lower air pipes are provided through the side wall of the lower shell. The lower air pipes are connected to the external negative air pressure pipe.

[0007] By adopting the above technical solution, the upper and lower openings of the lower shell are sealed by the upper cover and the lower shell. The upper air duct on the upper cover blows airflow into the screening device inside the side plate. The airflow passes through the screening device and then enters the lower shell. It is then sucked out from the lower air duct on the side of the lower shell, so that the dust can be sucked out, which increases the hygiene of the working environment and protects the health of the operators. At the same time, sealing it with the upper cover can also prevent the ore particles from being directly ejected by the smaller particles when the ore particles are in the uppermost screening device, thereby increasing the screening efficiency and reducing material loss.

[0008] The present invention is further configured such that the axis of the upper air duct located at the leftmost and highest position is perpendicular to the surface of the screening device, and the angle of the axis of the remaining upper air ducts relative to the axis of the leftmost upper air duct increases with the distance away from the leftmost position, and their tilting direction is tilted to the lower left.

[0009] By adopting the above technical solution, the inclined arrangement of several upper air ducts makes the airflow blown out of the upper air ducts directed towards the inside of the side plate, preventing dust from overflowing from the opening on the right side of the side plate. The airflow can also blow directly onto the material, thereby directly driving the dust through the screening device and being sucked out through the lower air duct, further reducing dust.

[0010] The present invention is further configured such that the opening of the lower air duct located inside the lower shell is inclined downward.

[0011] By adopting the above technical solution, and utilizing the downward-facing structure of the lower air duct located inside the lower shell, particles passing through the lower screening device will not fall directly into the lower air duct, preventing material particles that meet the specifications from being directly sucked away. Instead, smaller particles are carried into the lower air duct by airflow and sucked away, further increasing the screening effect.

[0012] The present invention is further configured such that: the screening device includes a filter screen, two positioning rods and two connecting blocks. The two positioning rods are respectively positioned at the front and rear of the upper end of the filter screen in the left-right direction. The two connecting blocks are positioned at the lower end of the filter screen and are positioned opposite to the positioning rods. The cross-section of the connecting block is U-shaped, and the U-shaped openings of the two side plates face the front and rear side walls of the side plates respectively. The connecting blocks are fixedly connected to the front and rear side walls of the side plates and are snapped into the connecting blocks. The positioning rods, filter screen, connecting blocks and support blocks are provided with connecting holes through the top and bottom, and the four are connected by bolts through the connecting holes.

[0013] By adopting the above technical solution, the screening device can be detachably connected to the inner wall of the side plate through the detachable connection of the filter screen, positioning rod, connecting block and support block. It is also possible to replace the filter screen with different mesh sizes, thereby increasing the scope of application.

[0014] The present invention is further configured such that: the side wall of the positioning rod is provided with a plurality of through holes penetrating the side wall of the side plate, and is detachably connected to the inner wall of the side plate by bolts.

[0015] By adopting the above technical solution, and utilizing the structure in which the sidewall of the positioning rod is provided with several through holes penetrating the sidewall of the side plate, the connection and positioning effects between the screening device and the inner wall of the side plate are further enhanced.

[0016] In summary, this utility model has the following beneficial effects: The upper cover and lower shell cover the exposed openings of the circular vibrating screen, allowing the ore to be screened to enter through the left opening of the side plate. The ore is then screened by a screening device to different diameters onto the screening devices and the lower shell at different heights. Some ore is discharged from the right opening of the side plate at different heights. Airflow is then blown upwards from the upper duct of the upper cover onto the screening device, and then drawn out from the lower shell through the lower duct. This process allows the airflow to pass through the screening device and into the lower shell, before flowing out through the lower duct, thus removing dust generated during ore screening. This reduces dust during screening, ensuring a safe and hygienic working environment, and also allows the airflow to remove excessively small ore particles, further enhancing the screening effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the screening device in this utility model; Figure 4 This is a schematic diagram of the screening device in this utility model from another direction; Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0018] In the picture: 11. Side panel; 12. Top cover; 13. Support device; 14. Lower shell; 16. Filter screen; 17. Positioning rod; 18. Connecting block; 19. Support block; 20. Support rod; 21. Upper air duct; 22. Lower air duct. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings of the embodiments thereof.

[0020] Example: This type of circular vibrating screen with a dust suppression structure, such as Figures 1 to 5As shown, the screen includes a circular vibrating screen body, which comprises a side plate 11, a vibrating device connected to and driving the side plate 11 to vibrate, four support devices 13 supporting the side plate 11 and evenly distributed on both sides of the side plate 11, and two screening devices for screening the ore inside the side plate 11. The side plate 11 is composed of two support plates and several connecting columns, and has openings in the upper, lower, left, and right directions. The line connecting the openings on the left and right sides of the side plate 11 is inclined to the lower right. The screening devices are detachably connected to the inner wall of the side plate 11, and the two screening devices are distributed vertically, dividing the inner cavity of the side plate 11 into two vertically distributed channels that run from left to right for the ore to move. A screen is fixedly connected to the upper part of the side plate 11. The upper cover 12 has a closed opening at the top. The lower shell 14 located below the side plate 11 is fixedly connected between the four support devices 13. The lower shell 14 has an opening at the top. The lower opening of the side plate 11 is inserted into the lower shell 14. Several upper air pipes 21 arranged in the left-right direction are installed through the top wall of the inner cavity of the upper cover 12. The upper air pipes 21 are connected to the external positive air pressure pipe. Several lower air pipes 22 are installed through the side wall of the lower shell 14. The lower air pipes 22 are connected to the external negative air pressure pipe. The axis of the upper air pipe 21 located at the leftmost and highest position is perpendicular to the surface of the screening device. The angle of the axis of the other upper air pipes 21 relative to the axis of the leftmost upper air pipe 21 increases with the distance away from the leftmost position, and the tilting direction is tilted to the lower left.

[0021] like Figure 2 As shown, the opening of the lower air duct 22 inside the lower shell 14 is inclined downwards.

[0022] like Figures 3 to 5 As shown, the screening device includes a filter screen 16, two positioning rods 17, and two connecting blocks 18. The two positioning rods 17 are respectively positioned at the front and rear of the upper end of the filter screen 16 in the left and right directions. The two connecting blocks 18 are positioned at the lower end of the filter screen 16 and are opposite to the positioning rods 17. The connecting blocks 18 have a U-shaped cross-section, and the U-shaped openings of the two side plates 11 face the front and rear side walls of the side plates 11 respectively. The connecting blocks 18 are fixedly connected to the front and rear side walls of the side plates 11 and are snapped into the connecting blocks 18. The positioning rods 17, the filter screen 16, the connecting blocks 18, and the support blocks 19 are provided with connecting holes running through them vertically. The four are connected by bolts passing through the connecting holes. The side wall of the positioning rods 17 is provided with several through holes that pass through the side wall of the side plate 11 and is detachably connected to the inner wall of the side plate 11 by bolts.

[0023] First, connect the four support devices 13 to the two sides of the lower shell 14 by bolts or welding. Then, install the circular vibrating screen body on the upper end of the support devices 13, and insert the side plate 11 on the circular vibrating screen body into the lower shell 14 through the upper opening of the lower shell 14, with a gap between the side plate 11 and the side wall of the lower shell 14. The other end of the vibrating device is connected to the ground. When the vibrating device drives the side plate 11 to vibrate, the gap between the side plate 11 and the inner wall of the lower shell 14 can prevent the vibration from being transmitted to the lower shell 14 when the side plate 11 vibrates. Then, clamp the connecting block 18. The filter screen 16 is placed on the connecting block 18 on the inner wall of the side plate 11, and the positioning rod 17 is placed on the filter screen 16. The holes on the filter screen 16, positioning rod 17, connecting block 18, and supporting block 19 are aligned, and the holes on the side wall of the positioning rod 17 are aligned with the holes on the side wall of the side plate 11. The bolts are then passed through the corresponding holes and locked, thus completing the fixation of the filter screen 16, positioning rod 17, connecting block 18, supporting block 19, and side plate 11, and also achieving the positioning of the screening device. Then, the upper cover 12 is placed on top. The upper cover 12 is installed on the upper part of the circular vibrating screen body by bolt connection, covering the exposed part of the circular vibrating screen body, thus completing the installation of the equipment. Then, the external positive air pressure pipe is connected to the upper air pipe 21 on the upper cover 12, and airflow is introduced into the circular vibrating screen through the upper air pipe 21. The airflow passes through the screen surface of the filter screen 16 and carries material particles with a diameter smaller than the screen hole through the corresponding position of the filter screen 16, while material particles with a diameter larger than the screen hole diameter of the corresponding position of the filter screen 16 are driven to the lower right along the screen surface of the filter screen 16 under the influence of vibration and gravity. Material particles smaller than the diameter of the bottom filter screen 16 fall into the lower shell 14 and accumulate at the bottom of the lower shell 14 due to gravity. Material particles with too small a diameter will form dust and flow synchronously with the airflow. The lower air duct 22 on the side wall of the lower shell 14 is connected to the external negative air pressure pipe and applies negative pressure to the lower shell 14, so that the airflow passes through several screening devices from the upper air duct 21 and enters the lower shell 14, and then flows out from the lower air duct 22, thereby sucking out the dust and preventing dust from flying during the use of this utility model. Several support rods 20 are fixedly connected to the lower end face of the filter screen 16, thereby forming reinforcing ribs on the filter screen 16 to prevent the filter screen 16 from deforming during vibration.

[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A circular vibrating screen with a dust suppression structure, comprising a circular vibrating screen body, the circular vibrating screen body comprising a side plate (11), a vibrating device connected to the side plate (11) and driving the side plate (11) to vibrate, four support devices (13) supporting the side plate (11) and evenly distributed on both sides of the side plate (11), and two screening devices for screening the ore in the side plate (11), the side plate (11) being formed by two support plates and several connecting columns and having openings in the upper, lower, left and right directions, and the line connecting the openings on the left and right sides of the side plate (11) being inclined to the lower right, the screening devices being detachably connected to the inner wall of the side plate (11), and the two screening devices being distributed vertically and dividing the inner cavity of the side plate (11) into two channels for ore movement that are distributed vertically and pass through from left to right, characterized in that: The side plate (11) is fixedly connected to an upper cover (12) that closes its upper opening. The four support devices (13) are fixedly connected to a lower shell (14) located below the side plate (11). The lower shell (14) has an opening facing upwards. The lower opening of the side plate (11) is inserted into the lower shell (14). The top wall of the inner cavity of the upper cover (12) is provided with several upper air pipes (21) arranged in the left-right direction. The upper air pipes (21) are connected to the external positive air pressure pipe. The side wall of the lower shell (14) is provided with several lower air pipes (22). The lower air pipes (22) are connected to the external negative air pressure pipe.

2. A circular vibrating screen with a dust suppression structure according to claim 1, characterized in that: The axis of the upper air duct (21) located at the leftmost and highest position is perpendicular to the surface of the screening device. The angle of the axis of the other upper air ducts (21) relative to the axis of the leftmost upper air duct (21) increases with the distance away from the leftmost position, and their tilting direction is tilted to the lower left.

3. A circular vibrating screen with a dust suppression structure according to claim 1, characterized in that: The opening of the lower air duct (22) inside the lower shell (14) is inclined downward.

4. A circular vibrating screen with a dust suppression structure according to claim 1, characterized in that: The screening device includes a filter screen (16), two positioning rods (17) and two connecting blocks (18). The two positioning rods (17) are respectively positioned at the front and rear of the upper end of the filter screen (16) in the left and right direction. The two connecting blocks (18) are positioned at the lower end of the filter screen (16) and are opposite to the positioning rods (17). The connecting blocks (18) have a U-shaped cross-section, and the U-shaped openings of the two side plates (11) face the front and rear side walls of the side plates (11) respectively. The connecting blocks (18) are fixedly connected to the front and rear side walls of the side plates (11) and are inserted into the connecting blocks (18). The positioning rods (17), filter screen (16), connecting blocks (18) and support blocks (19) are provided with connecting holes running through them, and the four are connected by bolts through the connecting holes.

5. A circular vibrating screen with a dust suppression structure according to claim 4, characterized in that: The positioning rod (17) has several through holes through the side wall of the side plate (11) and is detachably connected to the inner wall of the side plate (11) by bolts.

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