A segmented drum screen device for mineral processing

Abstract

This invention discloses a segmented drum screen device for mineral processing, comprising a base, a storage box, a screening machine, and a mounting frame. The storage box and mounting frame are both fixedly connected to the base, and the screening machine is inclinedly positioned on top of the storage box. The screening machine includes a casing, a main shaft, and several circular screens. The main shaft is rotatably connected to the casing. Several connecting rods are fixedly connected between the circular screens and the main shaft. Several screen holes are evenly distributed on the circular screens. Baffles are rotatably connected between adjacent circular screens, and discharge holes are provided on the baffles. A drive gear is fixedly connected to one end of the main shaft, and a drive reduction motor is fixedly connected to the top of the mounting frame. A receiving box is provided inside the storage box, located below the corresponding circular screen. This invention employs a mechanical structure for mineral particle size classification. The inclination degree controls the mineral's movement speed, and the baffles control the classification and discharge speed, ensuring good classification results for minerals at each stage and improving the efficiency of mineral processing and classification operations.

Description

Technical Field

[0001] This invention relates to the field of mineral processing equipment technology, and in particular to a segmented drum screen device for mineral processing. Background Technology

[0002] Screening is a crucial preparatory step in mineral processing, classifying the input materials by particle size to ensure they are separated into different grades based on their size characteristics. Existing classification devices often employ a combination of screening machines and hydraulic systems. However, the classification process is influenced by numerous factors, including particle size and specific gravity. The settling of mineral particles within the screening machine is also affected by the rotational speed of the spiral blades, the movement of the medium, and the constraints of the tank boundaries. This can easily lead to overflow of coarse particles and underflow of fine particles. The entire classification process is inefficient, resource-intensive, and subject to numerous influencing factors. Furthermore, the process is difficult to control, resulting in poor separation performance and significant time and labor costs. Summary of the Invention

[0003] The purpose of this invention is to provide a segmented drum screen device for mineral processing. This device uses a mechanical structure to classify minerals by particle size. The movement speed of the minerals is controlled by the degree of inclination, and the classification and feeding speed of the minerals are controlled by baffles, so that the minerals at each stage can maintain a good classification effect and improve the efficiency of mineral processing and classification operations.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a segmented drum screen device for mineral processing, comprising a base, a storage box, a screening machine, and a mounting frame. The storage box and mounting frame are both fixedly connected to the base. The screening machine is inclinedly positioned on top of the storage box. The screening machine includes a casing, a main shaft, and several circular screens. The casing is fixedly connected to the top of the storage box. A feed inlet is located at the higher end of the casing, and a discharge outlet is located at the lower end. The main shaft is rotatably connected to the casing. Several connecting rods are fixedly connected between the circular screens and the main shaft. Several screen holes are evenly distributed on the circular screens, and the screen holes on each segment of the circular screen... The circular screens, arranged from high to low with uniform apertures, have progressively increasing aperture sizes. Adjacent circular screens are rotatably connected by baffles, which are rotatably connected to the main shaft. The baffles have discharge holes. The end of the main shaft near the mounting frame passes through the machine housing and is fixedly connected to a drive gear. A drive reduction motor is fixedly connected to the top of the mounting frame, and a drive gear is fixedly connected to the output end of the drive reduction motor. The brake gear meshes with the drive gear. The storage tank contains receiving boxes corresponding to each section of the circular screen, located below the corresponding circular screen. A return box corresponding to the discharge port is located on one side of the storage tank.

[0005] Optionally, a driven gear is provided on the outer periphery of the baffle, and a stirring reduction motor corresponding to the driven gear is provided on the top of the housing. The output end of the stirring reduction motor is fixedly connected to the stirring gear. The top of the housing is provided with a mounting hole corresponding to the stirring gear, and the driven gear passes through the mounting hole and meshes with the stirring gear. Several stirring rods are evenly fixedly connected to one side of the baffle.

[0006] Optionally, the stirring rod is set in the same direction as the main shaft, and the stirring rod is arranged in a ring around the baffle.

[0007] Optionally, the edge of the baffle is provided with an installation groove for the edge of the circular screen to be inserted, and a roller bearing is provided in the installation groove, through which the circular screen is rotatably connected to the installation groove.

[0008] Optionally, protective covers are provided on the outer sides of both the driving gear and the driven gear.

[0009] Optionally, a flow restrictor is hinged to the rear side of the discharge port.

[0010] Optionally, a baffle plate is provided at the discharge port.

[0011] The segmented drum screen device for mineral processing of the present invention has the following advantages:

[0012] (1) The inclined setting of the screening machine allows the minerals to flow from the inlet to the outlet. During the mineral flow, the circular screen rotates to screen the minerals. At the same time, the corresponding baffle can prevent the material from sliding down quickly, ensuring that the circular screen can screen the minerals fully. The minerals screened by the multiple circular screens will fall into the receiving box of the corresponding particle size below.

[0013] (2) The stirring reducer motor can drive the baffle to rotate actively and control the rotation speed of the baffle, adjust the stirring effect of the stirring rod, so that the mineral can be fully spread on the circular screen and ensure the grading effect.

[0014] (3) The mounting groove can position and limit the circular screen, making it easy to install. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0017] Figure 3 This is a schematic diagram of the connection between the main shaft and the circular screen.

[0018] Figure 4 This is a schematic diagram showing the connection between the baffle and the circular screen.

[0019] Figure 5This is a cross-sectional schematic diagram of the connection between the baffle and the circular screen.

[0020] Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. Figure 1 The direction in the middle is the reference.

[0022] like Figures 1-6 As shown, a segmented rotary drum screen device for mineral processing includes a base 1, a storage tank 2, a screening machine 3, and a mounting frame 4. The storage tank 2 and mounting frame 4 are both fixedly connected to the base 1, with the mounting frame 4 located on the right side of the storage tank 2. The screening machine 3 is inclined at the top of the storage tank 2, with the left side lower than the right. The screening machine 3 includes a casing 5, a main shaft 6, and several circular screens 7. The casing 5 is fixedly connected to the top of the storage tank 2. A feed inlet 8 is located at the right end of the casing 5, and a discharge outlet is located at the left end. The main shaft 6 is rotatably connected to the casing 5. Several connecting rods 9 are fixedly connected between the circular screens 7 and the main shaft 6, connecting the circular screens 7 and the main shaft 6 into a single unit. Rotation of the main shaft 6 drives all the circular screens 7 to rotate synchronously. Several screen holes 10 are evenly distributed on each segment of the circular screen 7. The diameter of the screen holes 10 on each segment of the circular screen 7 is consistent, and the diameter of the screen holes 10 gradually increases from high to low. The storage bin 2 is equipped with receiving bins 11 corresponding to each section of the circular screen 7. The receiving bins 11 are located below the corresponding circular screen 7. Minerals of different particle sizes will fall into the corresponding receiving bins 11 after being classified by the circular screen 7. On the left side of the storage bin 2, there is a return box 12 corresponding to the discharge port. A guide plate 13 is provided at the discharge port. The guide plate 13 can pour the unclassified minerals into the return box 12, and then transport them back to the crushing mechanism for crushing and classification.

[0023] A baffle 14 is provided between adjacent circular screens 7. Mounting grooves 15 are provided on both sides of the baffle 14 for the edges of the circular screens 7 to be inserted. The mounting grooves 15 provide positioning and limiting for the baffle 14, facilitating installation. Roller bearings 16 are installed within the mounting grooves 15, and the circular screens 7 are rotatably connected to the mounting grooves 15 via the roller bearings 16. The center of the baffle 14 is rotatably connected to the main shaft 6, and the rotation of the baffle 14, the circular screens 7, and the main shaft 6 does not affect each other. A discharge hole 17 is provided on the baffle 14, and the discharge holes 17 on adjacent baffles 14 are staggered. A flow-limiting plate is hinged to the rear side of the discharge hole 17. The flow-limiting plate prevents a large amount of mineral from flowing out of the discharge hole 17 at once, thus preventing the mineral from flowing into the next stage before being graded.

[0024] The right end of the main shaft 6 passes through the housing 5 and is fixedly connected to a drive gear 18. A drive reduction motor 19 is fixedly connected to the top of the mounting bracket 4. The output end of the drive reduction motor 19 is fixedly connected to a drive gear 20. The brake gear meshes with the drive gear 18. The drive reduction motor 19 can drive the main shaft 6 and the circular screen 7 to rotate. A driven gear 21 is provided on the outer periphery of the baffle 14. A stirring reduction motor 22 corresponding to the driven gear 21 is provided on the top of the housing 5. A stirring gear 23 is fixedly connected to the output end of the stirring reduction motor 22. The top of the housing 5 has a mounting hole corresponding to the stirring gear 23. The driven gear 21 passes through the mounting hole and meshes with the stirring gear 23. The stirring reduction motor 22 can drive the corresponding baffle 14 to rotate. Several stirring rods 24 are evenly fixedly connected to the right side of the baffle 14. The stirring rods 24 are set in the same direction as the main shaft 6 and are arranged in a ring around the baffle 14. When the stirring reduction motor 22 drives the baffle 14 to rotate, the stirring rods 24 will agitate the minerals on the circular screen 7, so that the minerals are fully spread out, avoiding mineral accumulation, and also helping to improve the grading effect. Protective covers 25 are provided on the outer sides of the driving gear 20 and the driven gear 21. The protective covers can protect the rotating parts and improve the stability of the device operation.

[0025] The grading process of this invention is as follows: The drive reduction motor 19 and the stirring reduction motor 22 are started, causing the circular screen 7 and baffle 14 to rotate. Then, raw materials are added to the screening machine 3 through the feed inlet 8. Under the action of the stirring rod 24 and the rotating circular screen 7, smaller particles in the raw materials pass through the screen holes 10 and fall into the receiving box 11. Since the screening machine 3 is inclined, the graded minerals will enter the next circular screen 7 from the discharge port. The above grading operation is repeated. Finally, the remaining minerals will fall into the return box 12 from the discharge port. The graded minerals will fall into different receiving boxes 11 according to their particle size.

[0026] The embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the protection scope of the present invention.

Claims

1. A segmented drum screen device for mineral processing, comprising a base, characterized in that: It also includes a storage bin, a screening machine, and a mounting frame. The storage bin and mounting frame are fixedly connected to the base. The screening machine is tilted and positioned on top of the storage bin. The screening machine includes a chassis, a main shaft, and several circular screens. The chassis is fixedly connected to the top of the storage bin. The higher end of the chassis has a feed inlet, and the lower end has a discharge outlet. The main shaft is rotatably connected to the chassis. Several connecting rods are fixedly connected between the circular screens and the main shaft. The circular screens have evenly distributed screen holes, with the hole diameter being the same on each section. The hole diameter gradually increases from high to low. Adjacent circular screens are rotatably connected to baffles, which are rotatably connected to the main shaft. The baffles have discharge holes. Driven gears are located on the outer periphery of the baffles. The top of the casing is equipped with a stirring gear reducer motor corresponding to the driven gear. The output end of the stirring gear reducer motor is fixedly connected to the stirring gear. The top of the casing has a mounting hole corresponding to the stirring gear. The driven gear passes through the mounting hole and meshes with the stirring gear. Several stirring rods are evenly fixedly connected to one side of the baffle. The end of the main shaft near the mounting frame passes through the casing and is fixedly connected to the drive gear. The top of the mounting frame is fixedly connected to the drive gear reducer motor. The output end of the drive gear reducer motor is fixedly connected to the drive gear, which meshes with the drive gear. The storage tank is equipped with a receiving box corresponding to each section of the circular screen. The receiving box is located below the corresponding circular screen. A return box corresponding to the discharge port is set on one side of the storage tank.

2. The segmented drum screen device for mineral processing as described in claim 1, characterized in that: The stirring rods are set in the same direction as the main shaft, and the stirring rods are arranged in a ring around the baffle.

3. The segmented drum screen device for mineral processing as described in claim 1, characterized in that: The edge of the baffle is provided with an installation groove for the edge of the circular screen to be inserted. A roller bearing is installed in the installation groove, and the circular screen is rotatably connected in the installation groove through the roller bearing.

4. The segmented drum screen device for mineral processing as described in claim 1, characterized in that: Both the driving gear and the driven gear are equipped with protective covers on their outer sides.

5. The segmented drum screen device for mineral processing as described in claim 1, characterized in that: A flow restrictor is hinged to the rear side of the feed hole.

6. The segmented drum screen device for mineral processing as described in claim 1, characterized in that: A guide plate is installed at the discharge port.

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