Crucible raw material screening device

Abstract

The utility model discloses a crucible raw material screening device which comprises a screening box, a power motor, a power rotating shaft, a power belt wheel, a discharging hopper, a screening device body and a transmission belt, a feeding port and a discharging port are formed in the top and the bottom of the screening box respectively, the power rotating shaft is movably connected into the screening box, and one end of the power rotating shaft is connected with a power rod of the power motor. The power motor is installed on the top of the screening box, the power belt wheels are connected to the power rotating shaft, the screening devices are installed in the screening box, the power belt wheels are in transmission connection with the corresponding screening devices through transmission belts, and the discharging hoppers are connected to the side wall of the screening box and matched with the corresponding screening devices. The crucible raw material screening device is simple in structure, convenient to use and practical, the screen plate moves horizontally through the eccentric shaking device, the situation that dust is generated due to jumping when raw materials are screened is avoided, and meanwhile the raw materials are rapidly spread and screened.

Description

Technical Field

[0001] This utility model belongs to the field of raw material screening, and specifically relates to a crucible raw material screening device. Background Technology

[0002] A crucible is a container used for melting and refining molten metals, as well as for solid-liquid heating and reactions. Types include porcelain crucibles, iron crucibles, and alumina crucibles. Crucibles are heat-resistant and used for calcining precipitates, melting salts that do not react with the crucible, and dehydrating hydrated crystals. Crucibles are made from materials such as lime, carbon, and various refractory clays. The selection of raw materials for crucibles is extremely rigorous. To ensure the production quality of coated graphite crucibles, the raw materials need to be screened to prevent impurities from appearing on the crucible surface. Traditionally, vibrating screens are used for sorting, but this method generates a large amount of dust during screening. This is mainly because the finer the raw materials, the more they are stirred up when falling onto the screen below. The vibrating screen's intense vibration and open design further amplify the dust generation. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a crucible raw material screening device, which has a simple structure and is convenient and practical. The eccentric shaking device makes the screen plate move horizontally, so that the raw material will not jump and generate dust during screening, and at the same time, the raw material can be spread out for screening quickly.

[0004] A crucible raw material screening device includes a screening box, a power motor, a power shaft, power pulleys, a discharge hopper, screening devices, and a transmission belt. The screening box has an inlet and an outlet at its top and bottom, respectively. The power shaft is movably connected inside the screening box and one end is connected to the power rod of the power motor. The power motor is installed on the top of the screening box. Several power pulleys are connected to the power shaft. Several screening devices are installed inside the screening box. The power pulleys are connected to the corresponding screening devices via the transmission belt. Several discharge hoppers are connected to the side wall of the screening box and cooperate with the corresponding screening devices.

[0005] Preferably, the screening device includes a screen positioning ring, an L-shaped guide ring, a screen plate, a centralized hopper, an eccentric shaking device, and a fixing rod. The screen plate is installed on the screen positioning ring. One end of the L-shaped guide ring is connected to the circumference of the screen positioning ring. The L-shaped guide ring has a discharge port. At least one of the eccentric shaking devices is connected to the inner wall of the screening box through the fixing rod. The upper and lower ends of the eccentric shaking device are respectively connected to the screen positioning ring and the centralized hopper. A drive pulley is connected to one of the eccentric shaking devices. The drive pulley is connected to the power pulley through a drive belt.

[0006] Preferably, the eccentric shaking device includes a rotating shaft, an eccentric bearing, and a bearing. The rotating shaft is connected to a fixed rod via the bearing, and eccentric bearings are connected to both ends of the rotating shaft. The two eccentric bearings are respectively connected to the screen positioning ring and the centralized hopper.

[0007] Preferably, the upper side wall of the screening box is connected to a negative pressure dust exhaust pipe.

[0008] Preferably, a sealing door is provided on the side wall of the screening box. Beneficial effects

[0009] (1) The crucible raw material screening device of this utility model has a simple structure and is convenient and practical. The screen plate moves horizontally by means of the eccentric shaking device, so that the raw material will not jump and generate dust during screening, and the raw material can be spread out quickly for screening.

[0010] (2) The crucible raw material screening device of this utility model makes the hopper move horizontally by means of the eccentric shaking device, so that the raw material is screened and then concentrated and introduced into the screen plate below the hopper to extend the screening distance, while avoiding the phenomenon of raw material adhering to the inner wall of the hopper and hanging on the wall. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the raw material screening device;

[0012] Figure 2 This is a schematic diagram of the screening device;

[0013] 1-Screening box, 2-Inlet, 3-Outlet, 4-Power motor, 5-Power shaft, 6-Power pulley, 7-Outlet hopper, 8-Screening device, 81-Screen positioning ring, 82-L-shaped guide ring, 83-Discharge port, 84-Screen plate, 85-Concentrated hopper, 86-Eccentric shaking device, 87-Fixing rod, 88-Shaft, 89-Eccentric bearing, 810-Bearing, 9-Drive pulley. Detailed Implementation

[0014] The embodiments of this utility model are further described below with reference to the accompanying drawings. Example

[0015] like Figures 1 to 2As shown; a crucible raw material screening device includes a screening box 1, a power motor 4, a power shaft 5, power pulleys 6, a discharge hopper 7, screening devices 8, and a transmission belt. The screening box 1 has an inlet 2 and a discharge outlet 3 at its top and bottom, respectively. The power shaft 5 is movably connected inside the screening box 1, with one end connected to the power rod of the power motor 4. The power motor 4 is mounted on the top of the screening box 1. Several power pulleys 6 are connected to the power shaft 5. Several screening devices 8 are installed inside the screening box 1, and the power pulleys 6 are connected to the corresponding screening devices 8 via the transmission belt. Several discharge hoppers 7 are connected to the side wall of the screening box 1 and cooperate with the corresponding screening devices 8. The screening device 8 includes a screen positioning ring 81, an L-shaped guide ring 82, a screen plate 84, a centralized hopper 85, an eccentric shaking device 86, and a fixing rod 87. The screen plate 84 is mounted on the screen positioning ring 81. One end of the L-shaped guide ring 82 is connected to the circumferential surface of the screen positioning ring 81. The L-shaped guide ring 82 has a discharge port 83. At least three eccentric shaking devices 86 are connected to the inner wall of the screening box 1 through fixed rods 87. The upper and lower ends of the eccentric shaking device 86 are respectively connected to the screen positioning ring 81 and the centralized hopper 85. One of the eccentric shaking devices 86 is connected to a drive pulley 9, which is connected to the power pulley 6 through a drive belt. The eccentric shaking device 86 includes a rotating shaft 88, an eccentric bearing 89, and a bearing 810. The rotating shaft 88 is connected to the fixed rod 87 through the bearing 810. Both ends of the rotating shaft 88 are connected to eccentric bearings 89. Two of the eccentric bearings 89 are respectively connected to the screen positioning ring 81 and the centralized hopper 85. A negative pressure dust discharge pipe is connected to the upper side wall of the screening box 1. A sealing door is provided on the side wall of the screening box 1.

[0016] Raw materials are introduced through the feed inlet 2 and fall onto the screening device 8 for screening. The screened raw materials then enter the adjacent screening device 8 below and are discharged from the discharge hopper 7. This process is repeated to gradually screen raw materials of different particle sizes through the screening device 8 to complete the screening purpose. The power motor 4 drives the power shaft 5 to rotate, which in turn drives the power pulley 6 to rotate. The power pulley 6 drives the drive pulley 9 to rotate via the transmission belt, which in turn drives the shaft 88 to rotate. The shaft 88 drives the two eccentric bearings 89 to make the screen positioning ring 81 and the centralized hopper 85 move horizontally eccentrically, so that the raw materials on the screen plate 84 are quickly spread out for screening. The small raw materials after screening enter the centralized hopper 85 through the screen plate 84 and are then concentrated and introduced into the next screening device 8 for screening, while the large particles gradually move and fall into the L-shaped guide inclined ring 82 and are discharged through the discharge port 83.

[0017] The specific embodiments of this utility model have been described in detail above, but they are merely examples, and this utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model are covered within the scope of this utility model.

Claims

1. A crucible raw material screening device, characterized in that: The system includes a screening box (1), a power motor (4), a power shaft (5), a power pulley (6), a discharge hopper (7), a screening device (8), and a transmission belt. The screening box (1) has an inlet (2) and a discharge outlet (3) at its top and bottom, respectively. The power shaft (5) is movably connected inside the screening box (1) and one end is connected to the power rod of the power motor (4). The power motor (4) is installed on the top of the screening box (1). Several power pulleys (6) are connected to the power shaft (5). Several screening devices (8) are installed inside the screening box (1). The power pulleys (6) are connected to the corresponding screening devices (8) via the transmission belt. Several discharge hoppers (7) are connected to the side wall of the screening box (1) and cooperate with the corresponding screening devices (8).

2. The crucible raw material screening device as described in claim 1, characterized in that: The screening device (8) includes a screen positioning ring (81), an L-shaped guide ring (82), a screen plate (84), a centralized hopper (85), an eccentric shaking device (86), and a fixing rod (87). The screen plate (84) is installed on the screen positioning ring (81). One end of the L-shaped guide ring (82) is connected to the circumference of the screen positioning ring (81). The L-shaped guide ring (82) has a discharge port (83). At least three eccentric shaking devices (86) are connected to the inner wall of the screening box (1) through the fixing rod (87). The upper and lower ends of the eccentric shaking device (86) are connected to the screen positioning ring (81) and the centralized hopper (85) respectively. A drive pulley (9) is connected to one of the eccentric shaking devices (86). The drive pulley (9) is connected to the power pulley (6) through a drive belt.

3. The crucible raw material screening device as described in claim 2, characterized in that: The eccentric shaking device (86) includes a rotating shaft (88), an eccentric bearing (89), and a bearing (810). The rotating shaft (88) is connected to the fixed rod (87) through the bearing (810). Both ends of the rotating shaft (88) are connected to the eccentric bearing (89). The two eccentric bearings (89) are respectively connected to the screen positioning ring (81) and the centralized hopper (85).

4. The crucible raw material screening device as described in claim 3, characterized in that: The upper side wall of the screening box (1) is connected to a negative pressure dust discharge pipe.

5. The crucible raw material screening device as described in claim 4, characterized in that: A sealed door is provided on the side wall of the screening box (1).

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