A multi-layer screening device for the particle size of crushed ore powder

Abstract

This utility model relates to the field of mineral powder processing technology, and in particular to a multi-layer particle size screening device for crushed mineral powder. It includes a frame, on which a screening mechanism is mounted for multi-layer particle size screening of crushed mineral powder. The screening mechanism includes: a main component mounted on the frame for multi-layer screening; a power component mounted on the frame for controlling the vibration of the main component; and an adjustment component including a first connector mounted on the power component. A cylindrical rod is fixed to the front end of the first connector, and a nut is rotatably installed on the outer wall of the front end of the cylindrical rod. A threaded rod is provided inside the cylindrical rod, and the inner wall of the nut is threaded to the outer wall of the threaded rod. The adjustment component enables precise control of the vibration amplitude, ensuring stable screening results. By converting rotational power into reciprocating screening motion, automated continuous operation is achieved. It features simple operation, stable operation, and high screening efficiency, meeting the precise grading requirements of materials of different particle sizes.

Description

Technical Field

[0001] This utility model relates to the field of mineral powder processing technology, specifically to a multi-layer particle size screening device for crushed mineral powder. Background Technology

[0002] As an important raw material in industrial production, mineral powder particle size classification is a key process in mineral processing, metallurgy, and building materials. During mineral processing, crushed mineral powder needs to be precisely screened according to different particle size specifications to meet the stringent particle size requirements of subsequent processes.

[0003] According to CN219442383U, a mineral powder screening device is disclosed. This technology discloses a technical solution including: "a main body containing a drum, the drum having a frustum-shaped interior. A first screen is located on the side of the drum with a larger diameter. A second screen is located inside the first screen. A rotating shaft, penetrating the side wall of the main body and connected to a motor, is located inside the second screen. The end of the rotating shaft near the drum is connected to the inner wall of the drum via several first connecting rods. A sliding sleeve is fitted on the end of the rotating shaft near the motor. The sliding sleeve is connected to a discharge hood via several second connecting rods. An annular cover plate is located on the outside of the discharge hood. The rotating shaft on the side of the sliding sleeve near the motor has threads, and bolts adapted to the threads are provided on the rotating shaft on that side. Through two layers of rotating screens, the mineral powder is screened in multiple stages. During the rotation of the screens, the internal mineral powder is continuously lifted, increasing the spacing between the mineral powder particles and preventing excessive accumulation of mineral powder on the screens, thus avoiding screen blockage and affecting screening efficiency."

[0004] Existing mineral powder screening devices have significant shortcomings in vibration amplitude adjustment. Traditional equipment often uses a fixed vibration mode or simple mechanical adjustment method, which cannot achieve precise control and flexible adjustment of vibration amplitude during the screening process. As a result, when dealing with mineral powder materials of different particle sizes and characteristics, either the vibration intensity is insufficient, resulting in low screening efficiency and screen blockage, or the vibration is too large, causing material splashing and excessive wear on the equipment. This rigid adjustment method seriously restricts the adaptability of screening equipment to different working conditions, especially when processing mineral powders with high viscosity or wide particle size distribution, which directly affects the screening effect and production efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a multi-layer particle size screening device for crushed mineral powder. By adjusting the components, the vibration amplitude can be precisely controlled to ensure stable screening results. By converting rotational power into reciprocating screening motion, automated continuous operation is achieved. It features simple operation, stable operation, and high screening efficiency, meeting the precise grading requirements of materials of different particle sizes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer particle size screening device for crushed mineral powder, comprising a frame, wherein a screening mechanism is mounted on the frame for multi-layer particle size screening of crushed mineral powder, the screening mechanism comprising:

[0007] The main component is mounted on the frame and is used for multi-layer screening;

[0008] The power unit, mounted on the frame, is used to control the vibration of the main components.

[0009] The adjustment assembly includes a first connector mounted on the power assembly. A cylinder rod is fixed to the front end of the first connector. A nut is rotatably mounted on the outer wall of the front end of the cylinder rod. A threaded rod is provided inside the cylinder rod, and the inner wall of the nut is threadedly installed with the outer wall of the threaded rod. A second connector is fixed to the front end of the threaded rod. An axially arranged sliding groove is opened on the outer wall of the threaded rod. A bolt head is installed through the cylinder rod, and the inner end of the bolt head is located inside the sliding groove.

[0010] Preferably, the main component includes a frame mounted on a machine frame, an upper screening trough fixed at the upper end inside the frame, an upper discharge port provided at the front right side of the upper screening trough, a lower screening trough fixed at the lower end inside the frame, a lower discharge port provided at the front left side of the lower screening trough, and a connector fixed at the rear end of the frame, with a second connector pivotally connected to the connector.

[0011] Preferably, the power assembly further includes a shaft rotatably mounted above the rear end of the frame via a bearing seat, a circular plate fixed on the shaft, and a first connector pivotally connected to the outer edge of the circular plate.

[0012] Preferably, the power assembly further includes a driven pulley fixed on the shaft, a motor installed at the rear end inside the frame, a driving pulley fixed at the output end of the motor, and a belt installed between the driving pulley and the driven pulley.

[0013] Preferably, the main component also includes two rollers installed at the left and right ends of the frame.

[0014] Preferably, the screening mechanism further includes a first collection box and a second collection box placed below the upper discharge port and the lower discharge port, and a third collection box placed below the frame.

[0015] Beneficial effects

[0016] This invention provides a multi-layer screening device for particle size distribution after mineral powder crushing. Compared with the prior art, it has the following advantages:

[0017] 1. By rotating the nut, the rotation of the threaded rod is restricted by the fit between the bolt head and the slide groove, so that the threaded rod can only move along the axial direction of the cylinder rod, thereby achieving precise adjustment of the overall length of the adjustment assembly;

[0018] This method is not only easy to operate, but also ensures stable control of the vibration amplitude, avoiding the impact of excessive or insufficient vibration on the screening effect.

[0019] 2. The motor output drives the active pulley to rotate in conjunction with the belt, which in turn drives the driven pulley to rotate. The driven pulley drives the circular plate to rotate through the shaft. The circular plate converts the circular motion into the reciprocating linear motion of the main component through the adjustment component, thereby realizing continuous automated screening operation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the front end of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the rear end of this utility model;

[0022] Figure 3 This utility model Figure 2 A schematic diagram of the structure of part A in the middle;

[0023] Figure 4 This is a schematic diagram of the adjustment component in this utility model;

[0024] Figure 5 This is a cross-sectional view of the adjustment component in this utility model.

[0025] In the diagram: 1. Frame; 2. Screening mechanism; 21. Main component; 211. Frame; 212. Upper screening trough; 213. Upper discharge port; 214. Lower screening trough; 215. Lower discharge port; 216. Connecting part; 217. Roller; 22. Power component; 221. Shaft; 222. Circular plate; 223. Driven pulley; 224. Motor; 225. Drive pulley; 226. Belt; 23. Adjusting component; 231. First connector; 232. Cylindrical rod; 233. Nut; 234. Threaded rod; 235. Second connector; 236. Slide groove; 237. Bolt head; 24. First collection box; 25. Second collection box; 26. Third collection box. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 - Figure 5This utility model provides a technical solution: a multi-layer particle size screening device for crushed mineral powder, including a frame 1, on which a screening mechanism 2 is provided for multi-layer particle size screening of crushed mineral powder, the screening mechanism 2 including:

[0028] Main component 21 is mounted on frame 1 and used for multi-layer screening;

[0029] The power unit 22 is mounted on the frame 1 and is used to control the vibration of the main body component 21;

[0030] The adjusting assembly 23 includes a first connector 231 mounted on the power assembly 22. A cylinder rod 232 is fixed to the front end of the first connector 231. A nut 233 is rotatably mounted on the outer wall of the front end of the cylinder rod 232. A threaded rod 234 is provided inside the cylinder rod 232, and the inner wall of the nut 233 is threadedly installed with the outer wall of the threaded rod 234. A second connector 235 is fixed to the front end of the threaded rod 234. An axially arranged sliding groove 236 is provided on the outer wall of the threaded rod 234. A bolt head 237 is installed through the cylinder rod 232, and the inner end of the bolt head 237 is located inside the sliding groove 236.

[0031] In this embodiment, when rotating the nut 233, the rotation of the threaded rod 234 is restricted by the cooperation between the bolt head 237 and the slide groove 236, so that the threaded rod 234 can only move along the axial direction of the cylinder rod 232, thereby achieving precise adjustment of the overall length of the adjustment component 23. This method is not only easy to operate, but also ensures stable control of the vibration amplitude, avoiding the impact on the screening effect due to excessive or insufficient vibration.

[0032] Specifically, the main component 21 includes a frame 211 mounted on the frame 1. An upper screening trough 212 is fixed at the upper end of the frame 211. An upper discharge port 213 is provided on the right side of the front end of the upper screening trough 212. A lower screening trough 214 is fixed at the lower end of the frame 211. A lower discharge port 215 is provided on the left side of the front end of the lower screening trough 214. A connector 216 is fixed at the rear end of the frame 211, and a second connector 235 is pivotally connected to the connector 216.

[0033] In this embodiment, during the vibration process, the upper screening trough 212 screens the fine particles that meet the requirements to the lower screening trough 214, while the remaining coarse particles are automatically discharged through the upper discharge port 213; after further screening in the lower screening trough 214, the qualified materials fall into the third collection box 26, and the remaining coarse particles are discharged through the lower discharge port 215, thus realizing continuous automated screening operation.

[0034] Specifically, the power assembly 22 also includes a shaft 221 rotatably mounted above the rear end of the frame 1 via a bearing seat. A circular plate 222 is fixed on the shaft 221, and the first connector 231 is pivotally connected to the outer edge of the surface of the circular plate 222.

[0035] In this embodiment, the circular plate 222 is rotated by the shaft 221, and the circular motion is converted into the reciprocating linear motion of the main component 21 by the adjustment component 23.

[0036] Specifically, the power assembly 22 also includes a driven pulley 223 fixed on the shaft 221, a motor 224 installed at the rear end inside the frame 1, a drive pulley 225 fixed at the output end of the motor 224, and a belt 226 installed between the drive pulley 225 and the driven pulley 223.

[0037] In this embodiment, the output end of the motor 224 drives the active pulley 225 to rotate in conjunction with the belt 226, which in turn drives the driven pulley 223 to rotate. The driven pulley 223 drives the circular plate 222 to rotate via the shaft 221.

[0038] Specifically, the main component 21 also includes two rollers 217 installed at the left and right ends of the frame 211.

[0039] In this embodiment, the reciprocating motion of the main component 21 on the frame 1 is made smoother and more stable by installing rollers 217 symmetrically at both ends of the frame 211.

[0040] Specifically, the screening mechanism 2 also includes a first collection box 24 and a second collection box 25 placed below the upper discharge port 213 and the lower discharge port 215, and a third collection box 26 placed below the frame 211.

[0041] In this embodiment, the coarse particles discharged from the upper discharge port 213 fall directly into the first collection box 24, the medium-sized particles discharged from the lower discharge port 215 enter the second collection box 25, and the fine particles after double-layer screening fall into the third collection box 26.

[0042] The working principle and usage process of this utility model are as follows: First, the output end of the motor 224 drives the active pulley 225 to rotate in conjunction with the belt 226, which in turn drives the driven pulley 223 to rotate. The driven pulley 223 drives the circular plate 222 to rotate through the shaft 221. The circular plate 222 converts the circular motion into the reciprocating linear motion of the main component 21 through the adjustment component 23.

[0043] During vibration, the upper screening trough 212 screens the fine particles that meet the requirements to the lower screening trough 214, while the remaining coarse particles are automatically discharged through the upper discharge port 213. The coarse particles discharged from the upper discharge port 213 fall directly into the first collection box 24. After further screening in the lower screening trough 214, the qualified materials fall into the third collection box 26, and the remaining coarse particles are discharged through the lower discharge port 215. The medium-sized materials discharged from the lower discharge port 215 enter the second collection box 25, realizing continuous automated screening operation.

[0044] Furthermore, by rotating the nut 233, the rotation of the threaded rod 234 is restricted by the engagement of the bolt head 237 and the slide groove 236, so that the threaded rod 234 can only move along the axial direction of the cylinder rod 232, thereby achieving precise adjustment of the overall length of the adjustment component 23. This method is not only easy to operate, but also ensures stable control of the vibration amplitude, avoiding the impact on the screening effect due to excessive or insufficient vibration.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for multi-layer screening of the size of crushed ore fines, comprising a frame (1), characterized in that: The frame (1) is equipped with a screening mechanism (2) for multi-layer screening of mineral powder after crushing. The screening mechanism (2) includes: The main component (21) is mounted on the frame (1) and is used for multi-layer screening; A power unit (22) is mounted on the frame (1) and is used to control the vibration of the main component (21); The adjusting assembly (23) includes a first connector (231) disposed on the power assembly (22). A cylinder rod (232) is fixed to the front end of the first connector (231). A nut (233) is rotatably installed on the outer wall of the front end of the cylinder rod (232). A threaded rod (234) is disposed inside the cylinder rod (232), and the inner wall of the nut (233) is threadedly installed with the outer wall of the threaded rod (234). A second connector (235) is fixed to the front end of the threaded rod (234). An axially arranged sliding groove (236) is opened on the outer wall of the threaded rod (234). A bolt head (237) is installed through the cylinder rod (232), and the inner end of the bolt head (237) is located inside the sliding groove (236).

2. A multi-deck screening device for screening the particle size of crushed ore fines as claimed in claim 1, wherein: The main component (21) includes a frame (211) mounted on the frame (1). An upper screening trough (212) is fixed at the upper end inside the frame (211). An upper discharge port (213) is provided on the right side of the front end of the upper screening trough (212). A lower screening trough (214) is fixed at the lower end inside the frame (211). A lower discharge port (215) is provided on the left side of the front end of the lower screening trough (214). A connector (216) is fixed at the rear end of the frame (211), and a second connector (235) is pivotally connected to the connector (216).

3. A multi-deck particle size classification device for crushed ore fines as claimed in claim 1, wherein: The power assembly (22) also includes a shaft (221) rotatably mounted above the rear end of the frame (1) via a bearing seat. A circular plate (222) is fixed on the shaft (221), and the first connector (231) is pivotally connected to the outer edge of the surface of the circular plate (222).

4. A multi-layer particle size screening device for crushed mineral powder according to claim 3, characterized in that: The power assembly (22) also includes a driven pulley (223) fixed on the shaft (221), a motor (224) is installed at the rear end inside the frame (1), a drive pulley (225) is fixed at the output end of the motor (224), and a belt (226) is installed between the drive pulley (225) and the driven pulley (223).

5. A multi-deck particle sizing device for crushed ore fines as claimed in claim 1, wherein: The main component (21) also includes two rollers (217) installed at the left and right ends of the frame (211).

6. A multi-deck particle sizing device for crushed ore fines as claimed in claim 2, wherein: The screening mechanism (2) also includes a first collection box (24) and a second collection box (25) placed below the upper discharge port (213) and the lower discharge port (215), and a third collection box (26) is placed below the frame (211).

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