Linear vibrating screen

Abstract

The utility model discloses a linear vibrating screen, which belongs to the technical field of screening devices and comprises a screen box arranged on a base through a buffer mechanism and provided with double vibrating motors. The blocky material sieve plate and the powdery material sieve plate are correspondingly arranged on the sieve box up and down and incline downwards; the blanking box is arranged on the sieve box and is close to the upper end of the blocky material sieve plate; the blocky material guide plate and the powdery material bin are respectively arranged at the lower end and the bottom of the powdery material sieve plate; the screen box is provided with protective plates which are located on the left side and the right side of the blocky material screen plate respectively and incline downwards, and the protective plate on one side is provided with a cleaning device which moves in the inclining direction of the blocky material screen plate in a reciprocating mode to clean the blocky material screen plate. According to the linear vibrating screen, powder blocks in tailings can be effectively separated, and screen holes are prevented from being blocked.

Description

Technical Field

[0001] This utility model belongs to the technical field of screening devices, specifically relating to a linear vibrating screen. Background Technology

[0002] The steel smelting process generates a large amount of steel slag, which not only occupies land resources but also pollutes the environment. Therefore, the effective treatment and resource utilization of tailings slag is a crucial aspect of achieving sustainable development for steel enterprises.

[0003] The slag beneficiation workshop is a facility in the steel industry that processes tailings generated during steelmaking. Its main task is to refine the tailings, typically involving multiple steps such as crushing, screening, and magnetic separation. During screening, a linear vibrating screen is usually used to separate powder and lumps from the tailings. Existing linear vibrating screens mainly consist of a screen box mounted on a base via a buffer mechanism, two vibrating motors mounted on the screen box, multiple layers of screen plates on the screen box, and inlet and outlet ports located at opposite ends of the screen plates. The two vibrating motors rotate synchronously in opposite directions, and the eccentric blocks on the two motor shafts generate centrifugal force. These centrifugal forces cancel each other out vertically but superimpose horizontally. This combined force causes the material to vibrate linearly on the screen surface, achieving efficient material screening. However, in the process of screening tailings, the volume of tailings is enormous, and traditional linear vibrating screens easily clog the screen holes of the upper screen plate, resulting in poor powder and lump screening.

[0004] Therefore, there is a need for a linear vibrating screen that can effectively separate powder lumps from tailings and prevent screen clogging. Utility Model Content

[0005] The purpose of this invention is to provide a linear vibrating screen that can effectively separate powder lumps from tailings and prevent screen holes from clogging.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A linear vibrating screen includes a screen box mounted on a base via a buffer mechanism and equipped with dual vibrating motors; it also includes a block screen plate and a powder screen plate arranged vertically and vertically on the screen box and inclined downwards; a feed box arranged on the screen box and near the upper end of the block screen plate; and a block guide plate and a powder hopper respectively arranged at the lower end and bottom of the powder screen plate; the screen box is provided with downwardly inclined guard plates located on the left and right sides of the block screen plate, and one of the guard plates is provided with a cleaning device that moves back and forth along the inclined direction of the block screen plate to clean the block screen plate.

[0008] A further improvement of the present invention is that the block material sieve plate is divided into upper and lower parts, the lower part of which is evenly distributed with coarse sieve holes, and the upper part of which is evenly distributed with medium sieve holes with a diameter smaller than that of the coarse sieve holes; the powder material sieve plate is correspondingly arranged below the medium sieve hole part of the block material sieve plate, and is evenly distributed with fine sieve holes with a diameter smaller than that of the medium sieve holes.

[0009] A further improvement of this utility model is that: the block material guide plate is set at the lower end of the powder material sieve plate and extends downward at an angle to correspond to the coarse sieve hole portion of the block material sieve plate.

[0010] A further improvement of the present invention is that the cleaning device includes a linear transmission mechanism disposed on the outer wall of a protective plate on one side of the block screen plate, a slide groove that passes through the protective plate and is adapted to the linear transmission mechanism, a slider that is slidably disposed on the slide groove and connected to the linear transmission mechanism on one side, and a cleaning brush that is connected to the other side of the slider and located on the top of the block screen plate. The linear transmission mechanism and the slide groove are both disposed along the inclined direction of the protective plate, and their inclination angles are adapted to the block screen plate.

[0011] A further improvement of the present invention is that the linear transmission mechanism includes a lead screw mounted on the outer wall of a guard plate on one side of a block screen plate via bearing seats at both ends, a nut sleeve mounted on the lead screw and connected to a slider, and a forward and reverse motor connected to the end of the lead screw. The lead screw is arranged along the inclined direction of the guard plate, and its inclined angle is adapted to the block screen plate.

[0012] A further improvement of the present invention is that the buffer mechanism includes supports respectively arranged on the left and right sides of the screen box, elastic components respectively arranged on the top of each support, and triangular frames respectively arranged on each support and connected to the outer wall of the screen box through the elastic components.

[0013] A further improvement of this utility model is that the elastic component is an elastic rubber block or a spring; the cleaning brush is a bristle brush or a wire brush.

[0014] A further improvement of the present invention is that a feeding port is provided on the side wall of the feeding box near the block screen plate, a feeding guide plate is provided on the feeding port and its bottom is hinged thereto, and a buckle is provided between the feeding guide plate and the feeding box around the feeding port.

[0015] A further improvement of this utility model is that the coarse and medium sieve holes on the block sieve plate and the fine sieve holes on the powder sieve plate are all rectangular holes.

[0016] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0017] This utility model of a linear vibrating screen can effectively separate powder lumps from tailings, and at the same time, it can regularly clean the screen plate to prevent screen holes from clogging.

[0018] The block material sieve plate used in this invention is divided into upper and lower parts. The lower part is evenly distributed with coarse sieve holes, and the upper part is evenly distributed with medium sieve holes with a diameter smaller than the coarse sieve holes. The powder material sieve plate is correspondingly arranged below the medium sieve hole part of the block material sieve plate, and is evenly distributed with fine sieve holes with a diameter smaller than the medium sieve holes. The block material guide plate is arranged at the lower end of the powder material sieve plate and extends downward at an angle corresponding to the coarse sieve hole part of the block material sieve plate. After the tailings are fed, larger lumps cannot pass through the medium screen holes on the lumps screen plate and are directly screened through the coarse screen holes. They are then guided by the lumps guide plate and collected into the lumps container. Smaller lumps and powders are screened through the medium screen holes on the lumps screen plate and transferred to the powder screen plate. Smaller lumps cannot pass through the fine screen holes on the powder screen plate and are guided by the lumps guide plate and collected into the lumps container. Powders are screened through the fine screen holes on the powder screen plate and collected into the powder hopper at the bottom of the powder screen plate. This method can quickly and effectively separate the powder lumps in the tailings.

[0019] The cleaning device of this utility model includes a linear transmission mechanism mounted on the outer wall of a protective plate on one side of a block screen plate, a sliding groove through the protective plate and adapted to the linear transmission mechanism, a slider connected to the linear transmission mechanism on one side and slidably mounted on the sliding groove of the protective plate, and a cleaning brush connected to the other side of the slider and located on the top of the block screen plate. The linear transmission mechanism drives the slider to reciprocate along the sliding groove in the inclined direction of the protective plate, thereby driving the cleaning brush to reciprocate along the inclined direction of the block screen plate on the top of the block screen plate. The cleaning brush, in conjunction with the vibration of the vibrating screen itself, can quickly and effectively clean the block screen plate, preventing the screen holes from clogging. Through regular cleaning, the screen holes can be effectively prevented from being blocked, ensuring the filtration efficiency of the screen plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the linear vibrating screen of this utility model;

[0021] Figure 2 This is an exploded view of the linear vibrating screen of this utility model;

[0022] Figure 3 This is a schematic diagram of the cleaning device in the linear vibrating screen of this utility model;

[0023] The components are as follows: 1. Base; 2. Screen box; 3. Dual vibrating motors; 4. Block screen plate; 4-1. Coarse screen hole; 4-2. Medium screen hole; 5. Powder screen plate; 5-1. Fine screen hole; 6. Feed box; 6-1. Feed port; 6-2. Feed guide plate; 6-3. Buckle; 7. Powder hopper; 8. Block guide plate; 9. Protective plate; 10. Support; 11. Elastic component; 12. Triangular frame; 13. Slide groove; 14. Slider; 15. Cleaning brush; 16. Linear transmission mechanism; 16-1. Bearing seat; 16-2. Lead screw; 16-3. Nut sleeve. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to embodiments:

[0025] like Figure 1 and Figure 2 As shown, this utility model provides a linear vibrating screen, including a buffer mechanism mounted on a base 1 and a screen box 2 mounted on the base 1 via the buffer mechanism and equipped with dual vibrating motors 3. The buffer mechanism includes four supports 10, elastic components 11 respectively mounted on the top of each support 10, and tripods 12 respectively mounted on each support 10 via the elastic components 11. The four supports 10 are arranged correspondingly on the left and right sides of the screen box 2, and the tripods 12 on the four supports 10 are respectively connected to the outer wall of the screen box 2. Preferably, the elastic components 11 are elastic blocks or springs.

[0026] The linear vibrating screen also includes a block screen plate 4, a powder screen plate 5, a feed box 6, a block guide plate 8, and a powder hopper 7. The block screen plate 4 and the powder screen plate 5 are arranged vertically on the screen box 2, with the block screen plate 4 and powder screen plate 5 located at the top of the screen box 2. Both the block screen plate 4 and the powder screen plate 5 are inclined downwards at the same angle. The feed box 6 is located on the screen box 2 near the upper end of the block screen plate 4 to facilitate material feeding from the upper end of the block screen plate 4. The upper end of the downwardly inclined block screen plate 4 is its highest point of inclination. The block material guide plate 8 and the powder hopper 7 are respectively located at the lower end and bottom of the powder sieve plate 5. The block material guide plate 8 is used to guide the block material screened by the block material sieve plate 4, and the powder hopper 7 is used to hold the powder material screened by the powder sieve plate 5. The lower end of the downwardly inclined powder sieve plate 5 is its lowest point of inclination. The sieve box 2 is provided with guard plates 9 located on the left and right sides of the block material sieve plate 4, that is, the two guard plates 9 are respectively located on the top of the side walls on the left and right sides of the sieve box 2, which raises the side walls on the left and right sides of the sieve box 2. Both guard plates 9 are inclined downwards, and the inclination angle is the same as that of the block material sieve plate 4. One of the guard plates 9 is provided with a cleaning device that moves back and forth along the inclination direction of the block material sieve plate 4, so as to clean the block material sieve plate 4.

[0027] Specifically, a discharge port 6-1 is provided on the side wall of the feeding box 6 near the block screen plate 4. A discharge guide plate 6-2 is provided on the discharge port 6-1, and its bottom is hinged to it. That is, the bottom of the discharge guide plate 6-2 and the bottom of the discharge port 6-1 can be hinged by a pin. A buckle 6-3 is provided between the discharge guide plate 6-2 and the feeding box 6 around the discharge port 6-1. The buckle 6-3 can be a magnetic buckle or a pin buckle, etc. When not in use, the discharge port 6-1 can be closed.

[0028] Furthermore, the block material sieve plate 4 is divided into upper and lower parts. The lower part has coarse sieve holes 4-1 evenly distributed, and the upper part has medium sieve holes 4-2 with a diameter smaller than the coarse sieve holes 4-1 evenly distributed. The powder material sieve plate 5 is correspondingly located below the medium sieve hole 4-2 portion of the block material sieve plate 4, and has fine sieve holes 5-1 with a diameter smaller than the medium sieve holes 4-2 evenly distributed. The block material guide plate 8 is located at the lower end of the powder material sieve plate 5 and extends downward at an angle corresponding to the coarse sieve hole 4-1 portion of the block material sieve plate 4. Preferably, the coarse sieve holes 4-1 and medium sieve holes 4-2 on the block material sieve plate 4 and the fine sieve holes 5-1 on the powder material sieve plate 5 are all rectangular holes.

[0029] After the tailings are discharged from the feeding box 6, larger lumps cannot pass through the medium screen hole 4-2 on the lumps screen plate 4. They are directly screened through the coarse screen hole 4-1 and then guided by the lumps guide plate 8 into the lumps container. Smaller lumps and powders are screened through the medium screen hole 4-2 on the lumps screen plate 4 and onto the powder screen plate 5. Smaller lumps cannot pass through the fine screen hole 5-1 on the powder screen plate 5. They are guided by the lumps guide plate 8 and then into the lumps container. Powders are screened through the fine screen hole 5-1 on the powder screen plate 5 and are collected into the powder hopper 7 at the bottom of the powder screen plate 5. This effectively separates the powder lumps in the tailings.

[0030] Furthermore, the cleaning device includes a linear transmission mechanism 16, a chute 13, a slider 14, and a cleaning brush 15 that cooperate with each other. The linear transmission mechanism 16 is disposed on the outer wall of the guard plate 9 on one side of the block screen plate 4, and is arranged along the inclined direction of the guard plate 9. The chute 13 is formed through the guard plate 9 and is adapted to the linear transmission mechanism 16; that is, the chute 13 is also arranged along the inclined direction of the guard plate 9. Therefore, the inclination angles of the linear transmission mechanism 16 and the chute 13 are adapted to the block screen plate 4, i.e., the inclination angles of all three are consistent. The slider 14 is slidably disposed on the chute 13 of the guard plate 9, and one side of the slider 14 is connected to the linear transmission mechanism 16. The cleaning brush 15 is connected to the other side of the slider 14 and is located on the top of the block screen plate 4. Preferably, the cleaning brush 15 is a bristle brush or a wire brush.

[0031] When it is necessary to clean the block screen plate 4, which is most prone to clogging, the tailings feeding can be stopped first and the feed port 6-1 closed, but the linear vibrating screen is kept running. The linear transmission mechanism 16 is started, which drives the slider 14 to move back and forth along the slide groove 13 in the inclined direction of the guard plate 9. This drives the cleaning brush 15 to move back and forth along the inclined direction of the block screen plate 4 on the top of the block screen plate 4. The cleaning brush 15, in conjunction with the vibration of the vibrating screen itself, can quickly and effectively clean the block screen plate 4 and prevent the screen holes from clogging. Through regular cleaning, the screen holes can be effectively prevented from being clogged, ensuring the filtration efficiency of the screen plate.

[0032] Specifically, such as Figure 3 As shown, the linear transmission mechanism 16 includes a lead screw 16-2, a nut sleeve 16-3, and a forward / reverse motor. The two ends of the lead screw 16-2 are respectively mounted on the outer wall of the guard plate 9 on one side of the block screen plate 4 via bearing seats 16-1, and the lead screw 16-2 is arranged along the inclined direction of the guard plate 9, with the inclination angle of the lead screw 16-2 matching that of the block screen plate 4. The nut sleeve 16-3 is sleeved on the lead screw 16-2 and connected to one side of the slider 14. The forward / reverse motor is connected to the end of the lead screw 16-2. When the forward / reverse motor starts and rotates forward, the nut sleeve 16-3 moves along the axial direction of the lead screw 16-2, thereby driving the slider 14 to move obliquely upward along the slide groove 13. When the forward / reverse motor rotates in reverse, the nut sleeve 16-3 moves in the opposite direction along the axial direction of the lead screw 16-2, driving the slider 14 to move obliquely downward along the slide groove 13. By controlling the forward and reverse rotation of the motor, the slider 14 and the cleaning brush 15 connected to it are reciprocated on the top of the block screen plate 4, thereby cleaning the screen plate.

[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A linear vibrating screen, comprising a screen box (2) mounted with dual vibrating motors (3) on a base (1) via a buffer mechanism, characterized in that: It also includes a block screen plate (4) and a powder screen plate (5) that are arranged vertically on the screen box (2) and tilted downwards, a feeding box (6) that is arranged on the screen box (2) and close to the upper end of the block screen plate (4), and a block guide plate (8) and a powder hopper (7) that are respectively arranged at the lower end and bottom of the powder screen plate (5); the screen box (2) is provided with downward tilting guard plates (9) located on the left and right sides of the block screen plate (4), and a cleaning device that moves back and forth along the tilt direction of the block screen plate (4) to clean the block screen plate (4).

2. A linear vibrating screen according to claim 1, characterized in that: The block sieve plate (4) is divided into upper and lower parts. The lower part is evenly distributed with coarse sieve holes (4-1), and the upper part is evenly distributed with medium sieve holes (4-2) with a diameter smaller than that of the coarse sieve holes (4-1). The powder sieve plate (5) is correspondingly arranged below the medium sieve hole (4-2) part of the block sieve plate (4), and is evenly distributed with fine sieve holes (5-1) with a diameter smaller than that of the medium sieve holes (4-2).

3. A linear vibrating screen according to claim 2, characterized in that: The block material guide plate (8) is located at the lower end of the powder material sieve plate (5) and extends downward at an angle to correspond to the coarse sieve hole (4-1) of the block material sieve plate (4).

4. A linear vibrating screen according to any one of claims 1-3, characterized in that: The cleaning device includes a linear transmission mechanism (16) disposed on the outer wall of a guard plate (9) on one side of the block screen plate (4), a slide groove (13) that passes through the guard plate (9) and is adapted to the linear transmission mechanism, a slider (14) that is slidably disposed on the slide groove (13) and connected to the linear transmission mechanism (16) on one side, and a cleaning brush (15) that is connected to the other side of the slider (14) and located on the top of the block screen plate (4). The linear transmission mechanism (16) and the slide groove (13) are both disposed along the inclined direction of the guard plate (9), and their inclined angles are adapted to the block screen plate (4).

5. A linear vibrating screen according to claim 4, characterized in that: The linear transmission mechanism (16) includes a lead screw (16-2) mounted on the outer wall of a guard plate (9) on one side of the block screen plate (4) via bearing seats (16-1) at both ends, a nut sleeve (16-3) sleeved on the lead screw (16-2) and connected to the slider (14), and a forward and reverse motor connected to the end of the lead screw (16-2). The lead screw (16-2) is set along the inclined direction of the guard plate (9), and its inclination angle is adapted to the block screen plate (4).

6. A linear vibrating screen according to claim 5, characterized in that: The buffer mechanism includes brackets (10) respectively arranged on the left and right sides of the sieve box (2), elastic components (11) respectively arranged on the top of each bracket (10), and tripods (12) respectively arranged on each bracket (10) through the elastic components (11) and connected to the outer wall of the sieve box (2).

7. A linear vibrating screen according to claim 6, characterized in that: The elastic component (11) is an elastic rubber block or a spring; the cleaning brush (15) is a bristle brush or a wire brush.

8. A linear vibrating screen according to claim 1, characterized in that: The feeding box (6) has a feeding port (6-1) on the side wall near the block screen plate (4). A feeding guide plate (6-2) with its bottom hinged is provided on the feeding port (6-1), and a buckle (6-3) is provided between the feeding guide plate (6-2) and the feeding box (6) around the feeding port (6-1).

9. A linear vibrating screen according to claim 2, characterized in that: The coarse sieve holes (4-1) and medium sieve holes (4-2) on the block sieve plate (4) and the fine sieve holes (5-1) on the powder sieve plate (5) are all rectangular holes.

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