Screening structure of drum screen at discharging end of ore washer

Abstract

The utility model belongs to the technical field of material screening, and particularly relates to an ore washer discharging end drum screen screening structure which comprises a rack and a supporting seat fixedly connected to the surface of the rack, a drum screen is arranged on the surface of the supporting seat, and supporting rods are connected to the four corners of the surface of the rack in a welded mode. The tops of the two supporting rods on the same side are fixedly connected with connecting rods, a driving motor is arranged on the outer side of one connecting rod, the output end of the driving motor is fixedly connected with a rotating rod inserted between the two connecting rods, the surface of the rotary screen is in contact connection with a knocking arc plate, and a connecting assembly is arranged between the knocking arc plate and the connecting plate. According to the rotary screen, the driving motor, the rotating rod and the knocking arc plate are arranged, the output end of the driving motor can drive the rotating rod to rotate at a constant speed, the knocking arc plate connected with the rotating rod can rotate along with the rotating rod, the rotary screen can be knocked every time the knocking arc plate rotates by a circle, materials clamped in screen holes can be effectively vibrated out, and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of material screening technology, specifically relating to a screening structure of a ore washing machine unloading end cylindrical screen. Background Technology

[0002] Ore washing machines are large-scale equipment used in ferrous and non-ferrous metallurgical mines, steel mills, metallurgical industries, chemical industries, and building materials industries to clean ores. They are divided into two main categories: spiral ore washing machines and cylindrical ore washing machines. Ore washing is the process of removing clayey materials from ores; it is widely used in the washing and desliming industry of phosphate and iron ore, installed before crushing, gravity separation, magnetic separation, and flotation operations to eliminate the influence and harm of ore slime on these operations, improve operational efficiency, and obtain good separation indicators. Ore washing machines are large-scale equipment used in ferrous and non-ferrous metallurgical mines, steel mills, metallurgical industries, chemical industries, and building materials industries to clean ores and stones. Ore washing can prevent clayey materials in clay-containing mineral raw materials from clogging crushing and screening equipment. Raw materials containing soluble useful or harmful components also need to be washed.

[0003] A drum screen, also known as a cylindrical sieve or rotary screen, is a screening device used in metallurgy for crushing, screening, and grading. Its core component is a rotating cylinder around which the entire screen revolves, typically at a small angle. The cylinder consists of multiple screen openings. Material is fed in from one end of the cylinder and tumbles and disperses as the cylinder rotates. Under the influence of gravity and centrifugal force, material gradually passes through the screen openings and is separated. Drum screens operate at very low speeds, ensuring stable operation and good dynamic balance.

[0004] However, in the existing drum screen process, because the materials inside the drum screen are of different sizes, it is necessary to set different sized screen holes in different areas of the drum screen for further screening. However, during the screening process, larger particles often block the smaller diameter screen holes, which leads to a decrease in the screening efficiency of the equipment, affects product quality, and even causes problems such as subsequent product use or failure to operate normally. Utility Model Content

[0005] The purpose of this utility model is to provide a screening structure for a ore washing machine's discharge end cylindrical screen. By setting up a drive motor, a striking arc plate, and connecting components, the striking arc plate is driven to perform a periodic striking action on the cylindrical screen, effectively preventing material from clogging the screen holes and improving screening efficiency.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A ore washing machine discharge end drum screen screening structure includes a frame and a support base fixedly connected to the surface of the frame. A drum screen is provided on the surface of the support base. Support rods are welded to the four corners of the frame surface. A connecting rod is fixedly connected to the top of two support rods on the same side. A drive motor is provided on the outer side of one of the connecting rods. A rotating rod inserted between the two connecting rods is fixedly connected to the output end of the drive motor. A connecting plate is fixedly connected to the surface of the rotating rod. A striking arc plate is contacted and connected to the surface of the drum screen. A connecting assembly is provided between the striking arc plate and the connecting plate.

[0008] As a preferred embodiment, the connecting assembly includes a fixed plate A fixedly connected to the surface of the connecting plate, a fixed plate B connected to the surface of the striking arc plate by bolts, fixed supports fixedly connected to both ends of the fixed plate A, a connecting shaft fixedly connected between the two fixed supports, a rotating plate movably connected to the surface of the connecting shaft, and one end of the rotating plate fixedly connected to the fixed plate B.

[0009] As a preferred embodiment, the drum screen has an inlet and an outlet at both ends, and the frame is provided with an outlet chute at the end near the outlet.

[0010] As a preferred embodiment, a through hole is provided in the middle of the frame, and a hopper is provided at the bottom of the frame directly below the through hole.

[0011] As a preferred embodiment, the striking arc plate is made of rubber.

[0012] As a preferred embodiment, the rotation direction of the rotating rod is opposite to the rotation direction of the drum screen.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This utility model is equipped with a drive motor, a rotating rod, and a striking arc plate. The output end of the drive motor will drive the rotating rod to rotate at a constant speed, and the striking arc plate connected to it will rotate with the rotating rod. Each rotation of the striking arc plate will be subjected to centrifugal force to strike the drum screen, which can effectively shake out the material stuck in the screen holes and improve the screening efficiency.

[0015] This utility model is equipped with a striking arc plate that works in conjunction with a connecting component. After the striking arc plate strikes the drum screen, it can rotate around the connecting shaft, thus passing through the drum screen to enter the next striking cycle. The striking arc plate can only rotate around one side of the connecting plate. When the striking arc plate passes the highest point, it will be subjected to gravity and centrifugal force, rotating around the connecting shaft back to the initial state and striking the drum screen. This process is repeated, and the striking arc plate can periodically strike the drum screen. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the combined structure of the striking arc plate and the rotating rod in an embodiment of this utility model;

[0018] Figure 3 This is an embodiment of the present utility model. Figure 2 A partial enlarged structural diagram of A.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Frame; 2. Support base; 3. Rotary drum screen; 4. Support rod; 5. Connecting rod; 6. Drive motor; 7. Rotating rod; 8. Connecting plate; 9. Connecting assembly; 91. Fixed plate A; 92. Fixed plate B; 93. Fixed support; 94. Connecting shaft; 95. Rotating plate; 10. Striking arc plate; 11. Through hole; 12. Drop hopper; 13. Feed inlet; 14. Discharge outlet; 15. Discharge chute. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] like Figure 1-3 As shown, a ore washing machine discharge end drum screen screening structure includes a frame 1 and a support base 2 fixedly connected to the surface of the frame 1. A drum screen 3 is provided on the surface of the support base 2 and is clamped above the support base 2. The screen hole size on the surface of the drum screen 3 is set in three sizes from small to large in the direction from the feed port 13 to the discharge port 14. The motor is connected to the drum screen 3 through a reducer. The rolling ring provides support for the rotation of the drum screen 3. Driven by the motor, the drum screen 3 can rotate at a uniform speed.

[0023] Furthermore, support rods 4 are welded to the four corners of the frame 1 surface. Connecting rods 5 are fixedly connected to the top of the two support rods 4 on the same side. A drive motor 6 is provided on the outside of one of the connecting rods 5. A rotating rod 7 that passes between the two connecting rods 5 is fixedly connected to the output end of the drive motor 6. A connecting plate 8 is fixedly connected to the surface of the rotating rod 7. When the drive motor 6 works, the rotating rod 7 drives the connecting plate 8 to rotate at a constant speed.

[0024] See attached document Figure 2The surface of the drum screen 3 is connected to a striking arc plate 10. A connecting component 9 is provided between the striking arc plate 10 and the connecting plate 8. When the rotating rod 7 drives the connecting plate 8 to rotate at a constant speed, the striking arc plate 10 connected to it will rotate with the rotating rod 7. When the striking arc plate 10 unfolds, it will contact the surface of the drum screen 3. That is, it will be subjected to centrifugal force every time it rotates once, so as to strike the surface of the drum screen 3. This can effectively shake out the material stuck in the screen hole and improve the screening efficiency.

[0025] See attached document Figures 2-3 In order for the striking arc plate 10 to pass smoothly through the drum screen 3 and enter the next striking cycle, the connecting assembly 9 includes a fixing plate A91 fixedly connected to the surface of the connecting plate 8, a fixing plate B92 connected to the surface of the striking arc plate 10 by bolts, a fixing support 93 fixedly connected to both ends of the fixing plate A91, and a connecting shaft 94 fixedly connected between the two fixing supports 93.

[0026] Among them, a rotating plate 95 is movably connected to the surface of the connecting shaft 94. One end of the rotating plate 95 is fixedly connected to the fixed plate B92. When the striking arc plate 10 contacts the surface of the drum screen 3, the rotating plate 95, which is fixedly connected to the striking arc plate 10, will rotate around the connecting shaft 94. After rotation, the striking arc plate 10 will release its contact with the drum screen 3, and the edge of the non-connecting side of the striking arc plate 10 will fold towards the connecting component 9. After the striking arc plate 10 passes the highest point, it will be affected by gravity and centrifugal force. Under the influence of gravity and centrifugal force, the edge of the non-connecting side of the striking arc plate 10 will unfold away from the connecting component 9, thus entering the next striking cycle.

[0027] Furthermore, in order to collect the screened material while discharging the unwanted waste, a through hole 11 is provided in the middle of the frame 1, and a hopper 12 is provided at the bottom of the frame 1 directly below the through hole 11. The two ends of the drum screen 3 are respectively provided with an inlet 13 and an outlet 14. A discharge chute 15 is provided at the end of the frame 1 near the outlet 14. After the material is discharged from the unloading end of the washing machine, it is transported into the drum screen 3 through the inlet 13. The three sizes of material are screened out from the screen holes at the corresponding positions and fall into the through hole 11, entering the three hoppers 12 provided below the through hole 11. The waste that does not meet the requirements is discharged through the outlet 14 and the discharge chute 15.

[0028] Furthermore, in this embodiment, in order to ensure the impact effect while protecting the structure of the drum screen 3 from damage due to the impact, the rotation direction of the rotating rod 7 is opposite to that of the drum screen 3. The striking arc plate 10 is made of rubber, and two sets of striking arc plates 10 are staggered on the surface of the rotating rod 7. The arrangement of the two sets ensures that the top of the drum screen 3 can be struck by the striking arc plates 10, and the staggered arrangement can increase the striking frequency, thereby improving the striking effect and improving the screening efficiency.

[0029] The working principle of this utility model is as follows: First, the drum screen 3 can rotate at a constant speed driven by the motor. After the material is discharged from the discharge end of the washing machine, it is transported into the drum screen 3 through the feed port 13. The drive motor 6 works, and the rotating rod 7 can drive the connecting plate 8 to rotate at a constant speed. At this time, the striking arc plate 10 connected to it will rotate with the rotating rod 7. When the striking arc plate 10 unfolds, it will contact the surface of the drum screen 3. That is, it will be subjected to centrifugal force every time it rotates once to strike the surface of the drum screen 3, which can effectively shake out the material stuck in the screen hole and improve the screening efficiency.

[0030] Secondly, after the striking arc plate 10 contacts the surface of the drum screen 3, the rotating plate 95, which is fixedly connected to the striking arc plate 10, will rotate around the connecting shaft 94. The striking arc plate 10 can then release its contact with the drum screen 3 after rotation, thus entering the next striking cycle. At this time, the edge of the non-connecting side of the striking arc plate 10 folds towards the connecting component 9. After the striking arc plate 10 rotates past the highest point, the striking arc plate 10 is affected by gravity and centrifugal force, and the edge of the non-connecting side of the striking arc plate 10 unfolds away from the connecting component 9, thus striking the drum screen 3 when it rotates to the bottom, thus completing another striking cycle.

[0031] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A screening structure for a ore washing machine's discharge end cylindrical screen, comprising a frame (1) and a support base (2) fixedly connected to the surface of the frame (1), characterized in that: The support base (2) is provided with a drum screen (3), and support rods (4) are welded to the four corners of the frame (1). The tops of the two support rods (4) on the same side are fixedly connected to a connecting rod (5). A drive motor (6) is provided on the outside of one of the connecting rods (5). The output end of the drive motor (6) is fixedly connected to a rotating rod (7) that passes between the two connecting rods (5). A connecting plate (8) is fixedly connected to the surface of the rotating rod (7). A striking arc plate (10) is contacted to the surface of the drum screen (3). A connecting assembly (9) is provided between the striking arc plate (10) and the connecting plate (8).

2. The screening structure of the discharge end cylinder screen of a ore washing machine according to claim 1, characterized in that: The connecting assembly (9) includes a fixed plate A (91) fixedly connected to the surface of the connecting plate (8), a fixed plate B (92) connected to the surface of the striking arc plate (10) by bolt thread, a fixed support (93) fixedly connected to both ends of the fixed plate A (91), a connecting shaft (94) fixedly connected between the two fixed supports (93), a rotating plate (95) movably connected to the surface of the connecting shaft (94), and one end of the rotating plate (95) fixedly connected to the surface of the fixed plate B (92).

3. The screening structure of the discharge end cylinder screen of a ore washing machine according to claim 1, characterized in that: The drum screen (3) has an inlet (13) and an outlet (14) at its two ends respectively, and the frame (1) is provided with an outlet slide (15) at the end near the outlet (14).

4. The screening structure of the discharge end cylinder screen of a ore washing machine according to claim 1, characterized in that: The frame (1) has a through hole (11) in the middle, and a hopper (12) is provided at the bottom of the frame (1) directly below the through hole (11).

5. The screening structure of the discharge end cylinder screen of a ore washing machine according to claim 1, characterized in that: The striking arc plate (10) is made of rubber.

6. The screening structure of the discharge end cylinder screen of a ore washing machine according to claim 1, characterized in that: The rotating rod (7) rotates in the opposite direction to the rotating drum screen (3).

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