Screening device for small concentrating table

Abstract

The utility model relates to a small-sized screening device for a concentrating table, which comprises two fixing plates, a plurality of rotating shafts are jointly and rotatably connected between the two fixing plates, transmission components are mounted on the rotating shafts, two rotating rods are respectively and rotatably connected to the top surfaces of the two fixing plates, and a bidirectional hydraulic rod is mounted on the fixing plate between the two rotating rods. The two ends of the two-way hydraulic rod are hinged to the two rotating rods correspondingly, and the inner sides of the four rotating rods are jointly connected with a screening box. Two transverse sliding grooves and two vertical sliding grooves are symmetrically formed in the two opposite inner side walls of the screening box, sliding rods are arranged in the two transverse sliding grooves in a sliding mode, clamping rods are arranged in the two vertical sliding grooves in a sliding mode, the inner sides of the two sliding rods and the inner sides of the two clamping rods are jointly connected with a screening plate, and the clamping rods are connected with the screening plate through first springs. And a plurality of baffles are rotationally connected into the two vertical sliding grooves. Through the adjustable inclination angle of the sieve plate, the ore screening device can flexibly adapt to ores with different densities and granularities, the screening efficiency is remarkably improved, and material accumulation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ore screening technology, specifically to a screener for a small mineral processing shaking table. Background Technology

[0002] Mineral processing shaking tables are gravity separation devices based on the principle of film separation, widely used for the separation of fine-grained minerals, especially in the fields of metallic minerals (such as tungsten, tin, and gold) and coal. They allow mineral particles to move in different directions according to their density and size, spreading out in a fan shape diagonally from the feed trough and discharging sequentially along the edge of the bed. This allows for the precise production of various products of different qualities, such as concentrate, secondary concentrate, medium concentrate, and tailings. However, existing mineral processing shaking tables have several problems in practical use, such as the inability to adjust the bed inclination, limiting the separation effect of materials with different densities and particle sizes; insufficient control of material flow velocity, leading to low screening efficiency and easy material accumulation; low screening efficiency for fine particles, with traditional shaking tables achieving a recovery rate of less than 20% for particles smaller than -0.030mm; and strong shaking and vibration of the bed box, leading to loose connections and shortened equipment lifespan.

[0003] These problems severely impact mineral processing efficiency and equipment stability. To address these issues, this application proposes a small-scale mineral processing shaking table screener that improves screening efficiency and equipment stability through optimized screening structure and vibration damping design. Utility Model Content

[0004] This invention provides a screener for a small mineral processing shaking table.

[0005] The specific technical solution is: a small mineral processing shaking table screener, comprising two fixed plates, with multiple rotating shafts rotatably connected between the two fixed plates, a transmission assembly installed on the rotating shafts, two rotating rods rotatably connected to the top surfaces of the two fixed plates respectively, a bidirectional hydraulic rod installed on the fixed plate between the two rotating rods, the two ends of the bidirectional hydraulic rod being hinged to the two rotating rods respectively, and a screening box being connected to the inner sides of the four rotating rods;

[0006] The screening box has two symmetrically arranged horizontal and two vertical sliding grooves on its two opposite inner side walls. Sliding rods are slidably installed in the two horizontal sliding grooves, and locking rods are slidably installed in the two vertical sliding grooves. A screen plate is connected to the inner side of the two sliding rods and the two locking rods. The locking rods are connected to the screen plate by a spring. Multiple baffles are rotatably connected in the two vertical sliding grooves. Each baffle can rotate upwards but cannot rotate downwards. A push rod is correspondingly installed above each baffle. The other end of all the push rods slides through the side wall of the screening box and is connected to a handle. The handle is connected to the side wall of the screening box by a spring.

[0007] Furthermore, preferably, the transmission assembly includes a drive motor, a drive roller, and a transmission belt. The drive motor is mounted on the side wall of the fixed plate, the output shaft of the drive motor is connected to one of the rotating shafts, the drive roller is sleeved on the outer circumference of each rotating shaft, and a transmission belt is rotatably sleeved on the outer side of the plurality of drive rollers.

[0008] Furthermore, preferably, an inclined plate is connected between the two fixed plates, and one end of the inclined plate is positioned just below the transmission belt, forming a support relationship with the transmission belt.

[0009] Furthermore, preferably, connecting rods are connected to the bottom surfaces of both fixed plates near the inclined plate, and sliding grooves are provided on the inner sides of both connecting rods. A collection box is slidably connected in the sliding grooves, and sliders corresponding to the sliding grooves are provided on both sides of the collection box.

[0010] Furthermore, preferably, two support plates are connected to the two fixed plates respectively, the bottom of the support plate is provided with a sliding groove, and a column foot is slidably connected in the sliding groove. Two fixed blocks are connected to both sides of each support plate, and a spring is connected between the fixed block and the column foot.

[0011] The beneficial effects of this utility model are as follows: This utility model can effectively adjust the tilt angle of the screen plate through an adjustment mechanism, making it adaptable to ores of different densities and particle sizes, rationally controlling the material flow rate, reducing material accumulation, ensuring a smoother screening process, and significantly improving screening efficiency. Its tilting plate and collection box design enables convenient ore collection, while the introduction of a shock-absorbing mechanism effectively reduces vibration during equipment operation, extends service life, and lowers maintenance costs. Furthermore, this screener is easy to operate, highly automated, and has a compact overall structure, making it suitable for screening various ores and possessing high practicality and promotional value. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a small mineral processing shaking table screen according to the present invention. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of a small mineral processing shaking table screen according to the present invention. Figure 2 ;

[0014] Figure 3 This is a three-dimensional structural cross-sectional view of the transmission component of this utility model;

[0015] Figure 4 This is a three-dimensional sectional view of the adjustment structure of this utility model;

[0016] Figure 5 This is a three-dimensional structural cross-sectional view of the push rod and locking rod of this utility model;

[0017] Figure 6 This is a three-dimensional structural cross-sectional view of the screening box of this utility model;

[0018] Figure 7 This is a diagram showing the changes in the motion state of the sieve plate of this utility model;

[0019] In the diagram: 1-Fixed plate; 2-Rotating shaft; 31-Drive motor; 32-Drive roller; 33-Transmission belt; 4-Rotating rod; 5-Two-way hydraulic rod; 6-Screening box; 61-Horizontal chute; 62-Vertical chute; 63-Baffle; 64-Push rod; 65-Handle; 66-Spring 2; 7-Screen plate; 71-Slide rod; 72-Clamping rod; 73-Spring 1; 8-Inclined plate; 91-Connecting rod; 92-Collection box; 101-Support plate; 102-Column foot; 103-Fixed block; 104-Spring 3. Detailed Implementation

[0020] To make the technical problems and solutions solved by this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 3 As shown, this embodiment provides a small-scale mineral processing shaking table screener, comprising two fixed plates 1, with multiple rotating shafts 2 rotatably connected between the two fixed plates 1. Transmission components are mounted on the rotating shafts 2 for transporting the screened ore. Figure 4As shown, the transmission assembly includes a drive motor 31, a drive roller 32, and a transmission belt 33. The drive motor 31 is mounted on the side wall of the fixed plate 1. The output shaft of the drive motor 31 is connected to one of the rotating shafts 2. The drive roller 32 is sleeved on the outer circumference of each rotating shaft 2, and the transmission belt 33 is rotatably sleeved on the outer side of the multiple drive rollers 32. The drive motor 31 can drive the rotating shafts 2 and the drive rollers 32 to rotate, thereby driving the transmission belt 33 to transport the screened ore to the collection device.

[0024] like Figures 1 to 3 As shown, two rotating rods 4 are rotatably connected to the top surfaces of the two fixed plates 1, and a bidirectional hydraulic rod 5 is installed on the fixed plate between the two rotating rods 4. The two ends of the bidirectional hydraulic rod 5 are hinged to the two rotating rods 4 respectively. The screening box 6 is connected to the inner side of the four rotating rods 4. The bidirectional hydraulic rod 5 can drive the two rotating rods 4 to move to one side simultaneously. By moving back and forth, the screening box 6 is driven to sway back and forth, thereby performing the screening operation.

[0025] like Figures 4-6 As shown, two transverse grooves 61 and two vertical grooves 62 are symmetrically formed on the two opposite inner sidewalls of the screening box 6. A sliding rod 71 is slidably mounted in the two transverse grooves 61, and a locking rod 72 is slidably mounted in the two vertical grooves 62. A screen plate 7 is connected to the inner sides of the two sliding rods 71 ​​and the two locking rods 72, and the locking rods 72 are connected to the screen plate 7 by a spring 73. Multiple baffles 63 (which can be connected by torsion springs) are rotatably connected within the two vertical grooves 62. Each baffle 63 can rotate upwards but cannot rotate downwards. A push rod 64 is correspondingly mounted above each baffle 63, and the other end of all push rods 64 slides through the sidewall of the screening box 6 and connects to a handle 65, forming a single unit. The handle 65 is connected to the sidewall of the screening box 6 by a spring 66. The horizontal slide 61, the vertical slide 62, the baffle 63, the push rod 64, the handle 65, the second spring 66, the slide rod 71, the locking rod 72, and the first spring 73 together constitute the adjustment mechanism of the sieve plate 7, which can realize the adjustment of the inclination of the sieve plate 7.

[0026] The tilt adjustment mechanism of sieve plate 7 is as follows:

[0027] When the sieve plate 7 needs to be adjusted from a horizontal position to a tilt angle, such as Figure 7 As shown, pulling the screen plate 7 near the vertical chute 62 upwards causes the locking rod 72 to slide upwards along the vertical chute 62. When the locking rod 72 slides to the baffle 63, under the elastic restoring force of the spring 73, the locking rod 72 lifts the baffle 63, causing the baffle 63 to flip upwards, providing a channel for the locking rod 72 to move upwards. Until the locking rod 72 passes the baffle 63, the baffle 63 falls back to its original position, and the locking rod 72 is blocked by the baffle 63 and cannot slide downwards, thus fixing the screen plate 7 at an inclined angle inside the screening box 6.

[0028] When it is necessary to reduce the tilt angle of the screen plate 7, push the push rod 64 inward by the handle 65. The push rod 64 extends into the vertical slide groove 62 and pushes the locking rod 72. The spring 73 is compressed, and the locking rod 72 is no longer blocked by the baffle 63 and can slide downward along the slide groove, thereby causing the screen plate 7 to slide downward. When it slides to the appropriate angle, release the handle 65. The handle 65 moves outward under the restoring force of the spring 66, thereby driving the push rod 64 to slide outward away from the vertical slide groove 62. At the same time, the locking rod 72 returns to its original position under the restoring force of the spring 73, fixing the screen plate 7 in the screening box 6, thus completing the tilt angle adjustment.

[0029] Furthermore, to facilitate the collection of screened ore, this embodiment also includes an inclined plate 8 and a collection box 91. Specifically, the inclined plate 8 is connected between two fixed plates 1, with one end of the inclined plate 8 positioned directly below the transmission belt 33, forming a support relationship with it. Connecting rods 91 are connected to the bottom surfaces of both fixed plates 1 near the inclined plate 8. Sliding grooves are formed on the inner sides of both connecting rods 91, and a collection box 92 is slidably connected within these grooves. Sliding blocks corresponding to the sliding grooves are provided on both sides of the collection box 92. When the ore screened by the screening box 6 is conveyed by the transmission belt 33, the ore slides down the inclined plate 8 into the collection box 92, completing the ore collection.

[0030] Furthermore, to effectively reduce the vibration of the screen, this embodiment also includes a vibration damping mechanism. The specific structure is as follows: two support plates 101 are connected to two fixed plates 1 respectively. Each support plate 101 has a sliding groove at its bottom, within which a column foot 102 is slidably connected. Two fixed blocks 103 are fixedly connected to both sides of each support plate 101, and a spring 104 connects the fixed blocks 103 to the column foot 102. The support plates 101, column feet 102, fixed blocks 103, and spring 104 together constitute the vibration damping mechanism. The combined action of the support plates 101 and column feet 102, along with the spring 104, significantly releases the impact force generated by the vibration of the equipment above, providing a damping and buffering effect and effectively protecting the equipment.

[0031] Working Principle: Before screening, the screen plate 7 is adjusted to a suitable tilt angle according to the adjustment mechanism. Then, the drive motor 31 is started to activate the transmission components. The ore to be screened is poured into the screening box 6, and the hydraulic system drives the bidirectional hydraulic rod 5 to move back and forth, thus initiating the screening operation. The ore product screened by the screening box 6 is conveyed to the inclined plate 8 by the transmission belt 33 and then falls into the collection box 92. During the screening process, the tilt angle of the screen plate 7 can be adjusted according to the screening conditions to adapt to the screening needs of ores with different densities and particle sizes, reasonably control the flow speed of the material, reduce material accumulation, and ensure a smoother screening process, thereby improving screening efficiency. In addition, the spring 3 104 allows the column foot 102 to slide up and down within the support plate 101, releasing the impact force generated by the vibration of the equipment above, playing a shock absorption and buffering role, and effectively protecting the equipment.

[0032] Through the above design, the small mineral processing shaking table screener of this embodiment can not only effectively adjust the tilt angle of the screen plate and improve the screening efficiency, but also significantly reduce the vibration during equipment operation and extend the service life of the equipment, providing an efficient and stable solution for mineral processing operations.

[0033] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A screening device for a small mineral processing shaking table, characterized in that: It includes two fixed plates (1), and multiple rotating shafts (2) are rotatably connected between the two fixed plates (1). A transmission assembly is installed on the rotating shafts (2). Two rotating rods (4) are rotatably connected to the top surfaces of the two fixed plates (1). A bidirectional hydraulic rod (5) is installed on the fixed plate between the two rotating rods (4). The two ends of the bidirectional hydraulic rod (5) are respectively hinged to the two rotating rods (4). A screening box (6) is connected to the inner side of the four rotating rods (4). The screening box (6) has two horizontal sliding grooves (61) and two vertical sliding grooves (62) symmetrically opened on its two inner side walls. Sliding rods (71) are slidably arranged in the two horizontal sliding grooves (61), and locking rods (72) are slidably arranged in the two vertical sliding grooves (62). The inner sides of the two sliding rods (71) and the two locking rods (72) are connected to a screen plate (7). The locking rods (72) are connected to the screen plate (7) by a spring (73). Multiple baffles (63) are rotatably connected in the two vertical sliding grooves (62). Each baffle (63) can rotate upward but cannot rotate downward. A push rod (64) is correspondingly arranged above each baffle (63). The other end of all the push rods (64) slides through the side wall of the screening box (6) and is connected to a handle (65). The handle (65) is connected to the side wall of the screening box (6) by a spring (66).

2. A sifter for a small-scale mineral separation table according to claim 1, characterized in that: The transmission assembly includes a drive motor (31), a drive roller (32), and a transmission belt (33). The drive motor (31) is mounted on the side wall of the fixed plate (1). The output shaft of the drive motor (31) is connected to one of the rotating shafts (2). The drive roller (32) is sleeved on the outer circumference of each rotating shaft (2). The transmission belt (33) is rotatably sleeved on the outer side of the multiple drive rollers (32).

3. A sizer for a small mineral concentrating table as claimed in claim 2, characterised in that: An inclined plate (8) is connected between the two fixed plates (1). One end of the inclined plate (8) is located just below the transmission belt (33) and forms a support relationship with the transmission belt (33).

4. A sizer for a small mineral concentrating table as claimed in claim 3, characterised in that: Both of the fixed plates (1) are connected to connecting rods (91) on the bottom surface near the inclined plate (8). The inner sides of the two connecting rods (91) are provided with sliding grooves. A collection box (92) is slidably connected in the sliding groove. The collection box (92) has sliders on both sides corresponding to the sliding groove.

5. A small-scale concentrator table screen according to any one of claims 1 to 4, characterised in that: Two support plates (101) are connected to the two fixed plates (1) respectively. The bottom of the support plate (101) is provided with a sliding groove, and a column foot (102) is slidably connected in the sliding groove. Two fixed blocks (103) are connected to both sides of each support plate (101). A spring three (104) is connected between the fixed block (103) and the column foot (102).

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