Closed rotary screen

Abstract

The utility model relates to the technical field of drum screens, in particular to a closed drum screen which not only prevents impurities from blocking a screen mesh and improves screening efficiency, but also accelerates an impurity discharge device and prevents the impurities from influencing next screening. Comprising a discharging mechanism; the industrial silicon screening device further comprises a screening mechanism, a driving mechanism, a feeding mechanism, an impurity discharging mechanism and an auger mechanism, the screening mechanism is installed on the discharging mechanism and screens industrial silicon, the driving mechanism is installed on the screening mechanism and drives the screening mechanism to rotate, and the feeding mechanism is installed on the screening mechanism and facilitates feeding. The impurity discharging mechanism is installed on the screening mechanism and facilitates impurity discharging, the auger mechanism is installed on the impurity discharging mechanism and prevents impurities from blocking a screen, and impurity discharging is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of drum screens, in particular to a closed drum screen. Background Art

[0002] Metallic silicon, also known as crystalline silicon or industrial silicon, is used to make semiconductor materials and metallic silicon products. When smelting metallic silicon, there are usually certain particle size requirements for the silica entering the furnace. At the same time, impurities are easily brought in, affecting product quality. Therefore, the silica raw materials need to be crushed and screened in advance.

[0003] An existing drum screen, for example, an energy-saving and environmentally friendly powder screening machine for industrial silicon crushing processing disclosed in the utility model patent with application number 202320609439.9, has a main structure including a powder screening device body, on which a cleaning assembly is arranged, the cleaning assembly including a fixed plate, the internal rotation of the fixed plate is connected with a threaded rod, the surface of the threaded rod is threadedly connected with a threaded block, and a moving block is fixedly installed on the surface of the threaded block; when in use, the transmission disk is rotated to drive the threaded rod to rotate, the rotation of the threaded rod will cause the threaded block to move downward, the downward movement of the threaded block will drive the moving block to move downward, the downward movement of the moving block will drive the scraping block to move downward, and then the scraping block will contact the drum, so that when the drum rotates, the scraping block cleans foreign matter on the drum.

[0004] However, most of the existing drum screens are difficult to discharge impurities, which greatly affects the next use. In addition, when there is too much material, it is easy to affect the discharge and cause the screen to be blocked. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a closed drum screen which not only prevents impurities from clogging the screen and improves the screening efficiency, but also accelerates the impurity discharge device to prevent impurities from affecting the next screening.

[0006] The utility model discloses a closed drum screen, comprising a discharging mechanism; further comprising a screening mechanism, a driving mechanism, a feeding mechanism, a debris removal mechanism and an auger mechanism, wherein the screening mechanism is mounted on the discharging mechanism and screens industrial silicon, the driving mechanism is mounted on the screening mechanism and drives the screening mechanism to rotate, the feeding mechanism is mounted on the screening mechanism and facilitates feeding, the debris removal mechanism is mounted on the screening mechanism and facilitates impurity discharge, the auger mechanism is mounted on the debris removal mechanism and prevents impurities from clogging the screen, and accelerates impurity discharge; the feeding mechanism is opened to transport impurities into the screening mechanism, and then the feeding mechanism is closed, the driving mechanism drives the screening mechanism to rotate to facilitate the screening mechanism to screen the industrial silicon, and at the same time the auger mechanism is started to prevent impurities from clogging the screen, the screened industrial silicon falls into the discharge device in the discharging mechanism, and the debris removal mechanism is opened after the screening is completed, and the impurities are discharged through the debris removal mechanism under the action of the auger mechanism.

[0007] Preferably, the discharge mechanism includes supporting legs, a collecting cylinder, two sets of sealing rings and a discharge hopper, the bottom end of the supporting legs is connected to the ground, the bottom end of the collecting cylinder is connected to the top end of the supporting legs, a cavity is provided inside the collecting cylinder and a discharge port is opened at the bottom end of the collecting cylinder, the two sets of sealing rings are respectively installed at the front end and the rear end of the collecting cylinder, and the discharge hopper is installed at the discharge port at the bottom end of the collecting cylinder; the industrial silicon screened out in the screening mechanism enters the cavity of the collecting cylinder and is then discharged through the discharge hopper, and the two sets of sealing rings are provided to prevent the industrial silicon from overflowing and prevent the collecting cylinder from rotating with the screening mechanism.

[0008] Preferably, the screening mechanism comprises a screen, two sets of gears one, two sets of bases, two sets of transmission shafts one, four sets of gears two and two sets of pulleys one, the screen is installed in the cavity of the collecting barrel and is rotatably connected with the sealing ring, an inner cavity is arranged inside the screen, a feed port and a debris discharge port are opened on the screen, the two sets of gears one are both installed on the screen, the bottom ends of the two sets of bases are connected to the ground, and grooves are opened inside the two sets of bases, the two sets of transmission shafts one are connected and installed on the two sets of bases, the four sets of gears two are respectively installed on the two sets of transmission shafts one, and the two sets of pulleys one are respectively installed on the two sets of transmission shafts one; the raw materials are added into the inner cavity of the screen through the feeding mechanism, the driving mechanism drives the two sets of pulleys one to rotate, the two sets of pulleys one drive the two sets of transmission shafts one to rotate, the two sets of transmission shafts one drive the four sets of gears two to rotate, the four sets of gears two drive the two sets of gears one to rotate, the two sets of gears one drive the screen to rotate, the screen rotates to screen the raw materials, and the qualified industrial silicon is discharged and falls into the cavity of the collecting barrel.

[0009] Preferably, the driving mechanism includes an electric motor 1, a reducer 1, a transmission shaft 2, two sets of pulleys 2 and two sets of belts, the bottom end of the electric motor 1 is connected to the ground, the bottom end of the reducer 1 is connected to the ground, the transmission shaft 2 is rotatably mounted on the reducer 1, the two sets of pulleys 2 are both mounted on the transmission shaft 2, and the two sets of belts are tensioned and mounted on the two sets of pulleys 2 and the two sets of pulleys 1 respectively; start the electric motor 1, the electric motor 1 drives the transmission shaft 2 to rotate through the reducer 1, the transmission shaft 2 drives the two sets of pulleys 2 to rotate, and the two sets of pulleys 2 drive the two sets of pulleys 1 to rotate through the two sets of belts.

[0010] Preferably, the feeding mechanism includes a bracket, a hinge, a sealing door, a handle and a lock, the bracket is installed on the screen, the hinge is installed on the bracket, the sealing door is installed on the hinge, the handle is rotatably installed on the sealing door, and the lock is fixedly installed on the screen; the staff rotates the handle to drive the sealing door to rotate upward, which is convenient for adding raw materials into the inner cavity of the screen, and then pulls the sealing door through the handle to cover the inner cavity feed port of the screen, and then rotates the handle to make the handle and the lock cooperate and lock.

[0011] Preferably, the impurity removal mechanism includes a sleeve, a fixed seat, hinge 2 and a cover plate, the sleeve is sleeved on the impurity removal port of the screen, the fixed seat is installed on the sleeve, hinge 2 is installed on the fixed seat, and the cover plate is installed on hinge 2; by arranging the sleeve, the fixed seat is prevented from rotating with the screen, and after the screening is completed, the staff opens the cover plate to facilitate the discharge of impurities remaining in the inner cavity of the screen.

[0012] Preferably, the auger mechanism comprises a second motor, a second reducer, a third transmission shaft, a first bevel gear, a rotating shaft, a second bevel gear, a auger and a limiting wheel. The second motor is mounted on a fixed seat, the second reducer is mounted on a fixed seat, the third transmission shaft is rotatably mounted on the second reducer, the first bevel gear is mounted on the third transmission shaft, the rotating shaft is rotatably mounted in the inner cavity of the screen, the second bevel gear is mounted on the rotating shaft, the auger is mounted on the rotating shaft, the limiting wheel is mounted on the rotating shaft, and a sliding groove is provided in the inner cavity of the screen, and the limiting wheel rotates in the sliding groove; the second motor is started, the second motor drives the third transmission shaft to rotate through the second reducer, the third transmission shaft drives the first bevel gear to rotate, the first bevel gear and the second bevel gear are meshed for transmission, the second bevel gear drives the rotating shaft to rotate, the rotating shaft drives the auger to rotate, the auger rotation drives the raw materials in the inner cavity of the screen to be transmitted back and forth, the second motor continuously reverses forward and backward, drives the auger to rotate back and forth, prevents impurities from clogging the screen, and maintains the stability of the rotating shaft by setting the limiting wheel. After the screening is completed, the auger drives the impurities to move toward the cover plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the feeding mechanism is opened to transport the impurities into the screening mechanism, and then the feeding mechanism is closed; the driving mechanism drives the screening mechanism to rotate to facilitate the screening mechanism to screen the industrial silicon; and at the same time, the auger mechanism is started to prevent the impurities from clogging the screen; the screened industrial silicon falls into the discharge device in the discharging mechanism; after the screening is completed, the impurities are discharged through the impurity discharging mechanism under the action of the auger mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-section axonometric structure of the discharging mechanism and the screening mechanism of the utility model;

[0016] Figure 3 It is a partially enlarged isometric structural diagram of the screening mechanism, driving mechanism and feeding mechanism of the utility model;

[0017] Figure 4 It is a partially enlarged axonometric structural diagram of the debris removal mechanism and the auger mechanism of the utility model;

[0018] Figure 5 It is a schematic diagram of the cross-section axonometric structure of the utility model auger mechanism.

[0019] Markings in the attached drawings: 01, discharge mechanism; 11, support leg; 12, collection barrel; 13, sealing ring; 14, discharge hopper; 02, screening mechanism; 21, screen; 22, gear 1; 23, base; 24, transmission shaft 1; 25, gear 2; 26, pulley 1; 03, driving mechanism; 31, motor 1; 32, reducer 1; 33, transmission shaft 2; 34, pulley 2; 35, belt; 0 4. Feeding mechanism; 41. Bracket; 42. Hinge 1; 43. Sealing door; 44. Handle; 45. Lock; 05. Discharging mechanism; 51. Sleeve; 52. Fixed seat; 53. Hinge 2; 54. Cover plate; 06. Auger mechanism; 61. Motor 2; 62. Reducer 2; 63. Transmission shaft 3; 64. Bevel gear 1; 65. Rotating shaft; 66. Bevel gear 2; 67. Auger; 68. Limiting wheel. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] The utility model discloses a closed drum screen, comprising a discharging mechanism 01; further comprising a screening mechanism 02, a driving mechanism 03, a feeding mechanism 04, a debris removal mechanism 05 and an auger mechanism 06, wherein the screening mechanism 02 is mounted on the discharging mechanism 01 and screens industrial silicon, the driving mechanism 03 is mounted on the screening mechanism 02 and drives the screening mechanism 02 to rotate, the feeding mechanism 04 is mounted on the screening mechanism 02 and facilitates the feeding, the debris removal mechanism 05 is mounted on the screening mechanism 02 and facilitates the discharge of impurities, the auger mechanism 06 is mounted on the debris removal mechanism 05 and prevents impurities from clogging the screen and accelerates the discharge of impurities; the discharging mechanism 01 comprises Support legs 11, collecting barrel 12, two sets of sealing rings 13 and discharge hopper 14, the bottom end of the support leg 11 is connected to the ground, the bottom end of the collecting barrel 12 is connected to the top of the support leg 11, the collecting barrel 12 is provided with a cavity inside and a discharge port is opened at the bottom end of the collecting barrel 12, the two sets of sealing rings 13 are respectively installed at the front end and the rear end of the collecting barrel 12, and the discharge hopper 14 is installed at the discharge port at the bottom end of the collecting barrel 12; the screening mechanism 02 includes a screen 21, two sets of gears 22, two sets of bases 23, two sets of transmission shafts 24, four sets of gears 25 and two sets of pulleys 26, the screen 21 is installed in the cavity of the collecting barrel 12 The screen 21 is provided with an inner cavity, and a feed port and a debris discharge port are provided on the screen 21. Two sets of gears 22 are installed on the screen 21. The bottom ends of the two sets of bases 23 are connected to the ground, and grooves are provided inside the two sets of bases 23. Two sets of transmission shafts 24 are connected and installed on the two sets of bases 23. Four sets of gears 25 are respectively installed on the two sets of transmission shafts 24, and two sets of pulleys 26 are respectively installed on the two sets of transmission shafts 24. The driving mechanism 03 includes a motor 31, a reducer 32, a transmission shaft 33, two sets of pulleys 34 and two sets of belts 35. The motor 31 is provided with an inner cavity, and a feed port and a debris discharge port are provided on the screen 21. Two sets of gears 22 are installed on the screen 21. The bottom ends of the two sets of bases 23 are connected to the ground, and grooves are provided inside the two sets of bases 23. Two sets of transmission shafts 24 are connected and installed on the two sets of bases 23. Four sets of gears 25 are respectively installed on the two sets of transmission shafts 24, and two sets of pulleys 26 are respectively installed on the two sets of transmission shafts 24. The driving mechanism 03 includes a motor 31, a reducer 32, a transmission shaft 33, two sets of pulleys 34 and two sets of belts 35. The bottom end of 31 is connected to the ground, the bottom end of reducer 1 32 is connected to the ground, transmission shaft 2 33 is rotatably mounted on reducer 1 32, two sets of pulleys 2 34 are both mounted on transmission shaft 2 33, and two sets of belts 35 are respectively tensioned and mounted on two sets of pulleys 2 34 and two sets of pulleys 1 26; the feeding mechanism 04 includes a bracket 41, a hinge 1 42, a sealing door 43, a handle 44 and a lock 45, the bracket 41 is mounted on the screen 21, the hinge 1 42 is mounted on the bracket 41, the sealing door 43 is mounted on the hinge 1 42, the handle 44 is rotatably mounted on the sealing door 43, and the lock 45 is fixedly mounted on the screen 21;When it is working, the staff first rotates the handle 44 to drive the sealing door 43 to rotate upward, so as to add the raw materials into the inner cavity of the screen 21, and then pulls the sealing door 43 through the handle 44 to cover the inner cavity feed port of the screen 21, and then rotates the handle 44 to lock the handle 44 and the lock buckle 45, and then starts the motor 31, and the motor 31 drives the transmission shaft 2 33 to rotate through the reducer 1 32, and the transmission shaft 2 33 drives the two sets of pulleys 2 34 to rotate, and the two sets of pulleys 2 34 are driven by the two sets of belts 35. The two sets of pulleys 126 are driven to rotate, the two sets of pulleys 126 drive the two sets of transmission shafts 124 to rotate, the two sets of transmission shafts 124 drive the four sets of gears 25 to rotate, the four sets of gears 25 drive the two sets of gears 12 to rotate, the two sets of gears 12 drive the screen 21 to rotate, the screen 21 rotates to screen the raw materials, and the qualified industrial silicon is discharged and falls into the cavity of the collection barrel 12, and then discharged through the discharge hopper 14. The two sets of sealing rings 13 are set to prevent the industrial silicon from overflowing, and at the same time prevent the collection barrel 12 from rotating with the screening mechanism 02. ;

[0023] Example 2

[0024] like Figures 1 to 5As shown, a closed drum screen of the utility model is based on Example 1; the impurity discharge mechanism 05 includes a sleeve 51, a fixed seat 52, a hinge 2 53 and a cover plate 54, the sleeve 51 is sleeved at the impurity discharge port of the screen 21, the fixed seat 52 is installed on the sleeve 51, the hinge 2 53 is installed on the fixed seat 52, and the cover plate 54 is installed on the hinge 2 53; the auger mechanism 06 includes a motor 2 61, a reducer 2 62, a transmission shaft 3 63, a bevel gear 1 64, a rotating shaft 65, a bevel gear 2 66, an auger 67 and a limiting wheel 68, the motor 2 61 is installed on the fixed seat 52, the reducer 2 62 is installed on the fixed seat 52, the transmission shaft 3 63 is rotatably installed on the reducer 2 62, and the bevel gear 1 6 4 is installed on the transmission shaft three 63, the rotating shaft 65 is rotatably installed in the inner cavity of the screen 21, the bevel gear two 66 is installed on the rotating shaft 65, the auger 67 is installed on the rotating shaft 65, the limiting wheel 68 is installed on the rotating shaft 65, and a sliding groove is opened in the inner cavity of the screen 21, and the limiting wheel 68 rotates in the sliding groove; when it is working, first the staff rotates the handle 44 to drive the sealing door 43 to rotate upward, so as to facilitate the addition of raw materials into the inner cavity of the screen 21, and then pulls the sealing door 43 through the handle 44 to cover the inner cavity feed port of the screen 21, and then rotates the handle 44 to make the handle 44 and the lock buckle 45 cooperate and lock, and then starts the motor 31, and the motor 31 drives the transmission shaft two through the reducer 32 33 rotates, transmission shaft 2 33 drives two sets of pulleys 2 34 to rotate, two sets of pulleys 2 34 drive two sets of pulleys 1 26 to rotate through two sets of belts 35, two sets of pulleys 1 26 drive two sets of transmission shafts 1 24 to rotate, two sets of transmission shafts 1 24 drive four sets of gears 2 25 to rotate, four sets of gears 2 25 drive two sets of gears 1 22 to rotate, two sets of gears 1 22 drive screen 21 to rotate, screen 21 rotates to screen raw materials, start motor 2 61, motor 2 61 drives transmission shaft 3 63 to rotate through reducer 2 62, transmission shaft 3 63 drives bevel gear 1 64 to rotate, bevel gear 1 64 and bevel gear 2 66 mesh for transmission, bevel gear 2 66 drives rotating shaft 65 to rotate, rotating shaft 65 drives The auger 67 rotates, and the rotation of the auger 67 drives the raw materials in the inner cavity of the screen 21 to be transported back and forth. The motor 61 is continuously rotated forward and reversely to drive the auger 67 to rotate back and forth to prevent impurities from clogging the screen 21. The stability of the rotating shaft 65 is maintained by setting the limiting wheel 68. Qualified industrial silicon is discharged and falls into the cavity of the collecting barrel 12, and then discharged through the discharge hopper 14. Two sets of sealing rings 13 are set to prevent industrial silicon from overflowing, and at the same time prevent the collecting barrel 12 from rotating with the screening mechanism 02. The auger 67 drives the impurities to move toward the cover plate 54, and the sleeve 51 is set to prevent the fixed seat 52 from rotating with the screen 21. After the screening is completed, the staff opens the cover plate 54 to facilitate the discharge of impurities remaining in the inner cavity of the screen 21.

[0025] The motor 1 31 , the reducer 1 32 , the motor 2 61 and the reducer 2 62 of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for technicians in the field to make creative efforts.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A closed drum screen, comprising a discharging mechanism (01); characterized in that: It also includes a screening mechanism (02), a driving mechanism (03), a feeding mechanism (04), a debris removal mechanism (05) and an auger mechanism (06), wherein the screening mechanism (02) is mounted on the discharge mechanism (01) and screens industrial silicon, the driving mechanism (03) is mounted on the screening mechanism (02) and drives the screening mechanism (02) to rotate, the feeding mechanism (04) is mounted on the screening mechanism (02) and facilitates feeding, the debris removal mechanism (05) is mounted on the screening mechanism (02) and facilitates the discharge of impurities, and the auger mechanism (06) is mounted on the debris removal mechanism (05) and prevents impurities from clogging the screen and accelerates the discharge of impurities; The discharge mechanism (01) comprises a support leg (11), a collecting tube (12), two sets of sealing rings (13) and a discharge hopper (14); the bottom end of the support leg (11) is connected to the ground, the bottom end of the collecting tube (12) is connected to the top end of the support leg (11), a cavity is provided inside the collecting tube (12) and a discharge port is provided at the bottom end of the collecting tube (12); the two sets of sealing rings (13) are respectively installed at the front end and the rear end of the collecting tube (12); and the discharge hopper (14) is installed at the discharge port at the bottom end of the collecting tube (12); The screening mechanism (02) comprises a screen (21), two groups of gears (22), two groups of bases (23), two groups of transmission shafts (24), four groups of gears (25) and two groups of pulleys (26). The screen (21) is installed in the cavity of the collecting barrel (12) and is rotatably connected to the sealing ring (13). An inner cavity is arranged inside the screen (21). A feed port and a debris discharge port are provided on the screen (21). The two groups of gears (22) are both installed on the screen (21). The bottom ends of the two groups of bases (23) are connected to the ground, and grooves are provided inside the two groups of bases (23). The two groups of transmission shafts (24) are connected and installed on the two groups of bases (23). The four groups of gears (25) are respectively installed on the two groups of transmission shafts (24). The two groups of pulleys (26) are respectively installed on the two groups of transmission shafts (24). The debris discharge mechanism (05) comprises a sleeve (51), a fixing seat (52), a second hinge (53) and a cover plate (54); the sleeve (51) is sleeved on the debris discharge port of the screen (21); the fixing seat (52) is mounted on the sleeve (51); the second hinge (53) is mounted on the fixing seat (52); and the cover plate (54) is mounted on the second hinge (53).

2. A closed drum screen as claimed in claim 1, characterized in that: The driving mechanism (03) comprises an electric motor (31), a reducer (32), a transmission shaft (33), two sets of pulleys (34) and two sets of belts (35). The bottom end of the electric motor (31) is connected to the ground, the bottom end of the reducer (32) is connected to the ground, the transmission shaft (33) is rotatably mounted on the reducer (32), the two sets of pulleys (34) are both mounted on the transmission shaft (33), and the two sets of belts (35) are tensionedly mounted on the two sets of pulleys (34) and the two sets of pulleys (26) respectively.

3. A closed drum screen as claimed in claim 1, characterized in that: The feeding mechanism (04) comprises a bracket (41), a hinge (42), a sealing door (43), a handle (44) and a lock (45); the bracket (41) is mounted on the screen (21); the hinge (42) is mounted on the bracket (41); the sealing door (43) is mounted on the hinge (42); the handle (44) is rotatably mounted on the sealing door (43); and the lock (45) is fixedly mounted on the screen (21).

4. A closed drum screen as claimed in claim 1, characterized in that: The auger mechanism (06) comprises a second motor (61), a second reducer (62), a third transmission shaft (63), a first bevel gear (64), a rotating shaft (65), a second bevel gear (66), an auger (67) and a limiting wheel (68). The second motor (61) is mounted on a fixed seat (52), the second reducer (62) is mounted on the fixed seat (52), the third transmission shaft (63) is rotatably mounted on the second reducer (62), the first bevel gear (64) is mounted on the third transmission shaft (63), the rotating shaft (65) is rotatably mounted in the inner cavity of the screen (21), the second bevel gear (66) is mounted on the rotating shaft (65), the auger (67) is mounted on the rotating shaft (65), the limiting wheel (68) is mounted on the rotating shaft (65), and a sliding groove is opened in the inner cavity of the screen (21), and the limiting wheel (68) rotates in the sliding groove.

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