Feeding device for preventing material blockage of vibrating screen in sample preparation

Abstract

The utility model belongs to the technical field of vibrating screen equipment, and discloses a feeding device for preventing a vibrating screen from being stuck in sample preparation, which comprises a stock bin for storing feeding materials, a circulating feeding mechanism for transferring the feeding materials is arranged at the bottom of the stock bin, and a feeding hopper communicated with a feeding port of the vibrating screen is arranged at the bottom of the circulating feeding mechanism. A material loosening mechanism used for loosening materials is arranged in the circulating feeding mechanism, and a conveying mechanism used for improving the mobility of the materials is further arranged on the feeding hopper. The circulating feeding mechanism is arranged between the stock bin and the feeding hopper, and the conveying mechanism is arranged on the feeding hopper, so that the feeding hopper is prevented from being blocked by materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibrating screen equipment, and in particular relates to a feeding device for preventing material from being stuck in a vibrating screen during sample preparation. Background Art

[0002] Vibrating screen is a screening machine widely used in coal and other industries for grading, washing, dehydrating and removing media from materials. Vibrating screens are mainly divided into linear vibrating screens, circular vibrating screens and high-frequency vibrating screens.

[0003] Vibrating screens can be divided into single-axis vibrating screens and double-axis vibrating screens according to the type of vibrator.

[0004] Regardless of the form of vibrating screen, it is necessary to perform a loading operation when using it. When the existing vibrating screen pours the material into the hopper, the narrow discharge pipe of the hopper is prone to accumulation and clogging. Utility Model Content

[0005] The utility model provides a feeding device for preventing material from being stuck on a vibrating screen during sample preparation, which can avoid material accumulation and blockage.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A feeding device for preventing material from being stuck on a vibrating screen during sample preparation, comprising:

[0008] Silos, used to store the materials to be loaded;

[0009] The circulating feeding mechanism is arranged at the bottom of the silo for feeding the transfer materials;

[0010] A feed hopper is arranged at the bottom of the circulating feed bin and is connected to the feed port of the vibrating screen;

[0011] Among them, a loosening mechanism for loosening materials is arranged inside the circulating feeding mechanism, and a conveying mechanism for improving the fluidity of materials is also arranged on the feeding hopper.

[0012] Preferably, the circulating feeding mechanism comprises:

[0013] Disc transition bin, used for circulating feeding;

[0014] The rotating mechanism drives the disc transition bin to rotate.

[0015] The rotating mechanism includes a motor 1 and a reducer arranged at the output end of the motor 1, and the output shaft of the reducer is coaxially connected with the disc transition bin;

[0016] Preferably, a partition is arranged in the disc transition bin, and the disc transition bin is divided into three identical transition chambers by the partition.

[0017] Preferably, the loosening mechanism comprises:

[0018] A material loosening rack, wherein three of the material loosening racks are arranged, and the three material loosening racks are movably installed in each transition room one by one;

[0019] The driving device drives the loosening rack to move back and forth in the transition chamber to accelerate the unloading of materials;

[0020] Each of the loosening racks includes a main rod slidably connected to the transition chamber and a secondary rod arranged on the main rod, a plurality of secondary rods are arranged, and the main rod is connected to a driving device.

[0021] Preferably, the driving device comprises:

[0022] The movable frame is slidably arranged in the disc transition bin to drive the main rod to move;

[0023] A driving mechanism is arranged in the disc transition bin to control the reciprocating movement of the movable frame;

[0024] Wherein, the movable frame is an isosceles trapezoidal structure.

[0025] Preferably, the driving mechanism comprises:

[0026] Motor 2 is arranged on one side of the movable frame;

[0027] Two return springs are symmetrically arranged on both sides of the second motor;

[0028] The output end of the second motor is provided with a cam for driving the movable frame to move.

[0029] Preferably, slots slidably connected to two of the main rods are arranged on both sides of the movable frame, and the middle of the movable frame is fixedly connected to another main rod located between the two main rods.

[0030] Preferably, the conveying mechanism comprises:

[0031] A discharge cylinder is arranged at the bottom of the feed hopper and is used to convey materials to the vibrating screen;

[0032] A passive gear is sleeved on the outer wall of the discharge barrel and fixedly connected to the discharge barrel;

[0033] A driving gear meshingly connected with the driven gear;

[0034] Motor three drives the driving gear to rotate;

[0035] The spiral inner cavity is arranged on the inner wall of the discharge barrel;

[0036] Wherein, the discharging cylinder is rotatably connected to the feeding hopper.

[0037] Compared with the prior art, the beneficial effects of the utility model are:

[0038] (1) A circulating feeding mechanism is arranged between the silo and the feed hopper. The circulating feeding mechanism uses three transition chambers to circulate and transfer materials. The material conveying amount is controlled by controlling the speed of the three transition chambers to convey materials in an orderly and controllable manner from the silo to the feed hopper to avoid material blockage in the feed hopper.

[0039] (2) By arranging a loosening mechanism for loosening materials in the circulating feeding mechanism, the materials can flow by themselves when loading materials in the transition chamber, thereby increasing the loading capacity; and the material unloading speed can be accelerated when unloading materials in the transition chamber.

[0040] (3) By arranging a conveying mechanism on the feed hopper, the motor, the driving gear and the passive gear are used to drive the discharge barrel to rotate. The inner cavity of the discharge barrel is arranged as a spiral inner cavity. When the discharge barrel rotates, the fluidity of the internal material is accelerated, thereby further avoiding material blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the utility model;

[0042] Figure 2 This is a structural schematic diagram of the disc transition bin of the utility model;

[0043] Figure 3 This is a schematic diagram of the structure of the circulating feeding mechanism of the utility model;

[0044] Figure 4 It is a structural schematic diagram of the conveying mechanism of the utility model.

[0045] Description of reference numerals:

[0046] 1-bin, 2-feed hopper, 3-disc transition bin, 4-motor 1, 5-reducer, 6-partition, 7-transition chamber, 8-loosening rack, 9-main rod, 10-auxiliary rod, 11-movable rack, 12-motor 2, 13-reset spring, 14-cam, 15-slot, 16-discharge barrel, 17-passive gear, 18-driving gear, 19-motor 3, 20-spiral inner cavity. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] Embodiment 1:

[0049] like Figures 1 to 4 As shown, the utility model provided in this embodiment adopts the following technical scheme: a feeding device for preventing material jamming of a vibrating screen during sample preparation, comprising a silo 1 for storing feeding materials, a circulating feeding mechanism for transferring material feeding is arranged at the bottom of the silo 1, a feeding hopper 2 connected to the feeding port of the vibrating screen is arranged at the bottom of the circulating feeding mechanism, and the feeding transfer is performed by arranging the circulating feeding mechanism to avoid material feeding jam;

[0050] Among them, a loosening mechanism for loosening materials is arranged inside the circulating feeding mechanism, and a conveying mechanism for improving material fluidity is also arranged on the feed hopper 2 to improve material fluidity and avoid material blockage. The material is stored in the silo 1. When loading, it is first transported to the feed hopper 2 through the transition of the circulating feeding mechanism, and then transferred from the feed hopper 2 to the feed port of the vibrating screen.

[0051] Embodiment 2:

[0052] On the basis of Example 1, in order to avoid material blockage during feeding, a circulating feeding mechanism is arranged between the silo 1 and the feed hopper 2 for transit feeding. The circulating feeding mechanism includes a disc transition bin 3 for circulating feeding and a rotating mechanism for driving the disc transition bin 3 to rotate. A partition 6 is arranged in the disc transition bin 3, and is divided into three identical transition chambers 7 by the partition 6.

[0053] Among them, the rotating mechanism includes a motor 4 and a reducer 5 arranged at the output end of the motor 4. The output shaft of the reducer 5 is coaxially connected with the disc transition bin 3. The output of the motor 4 drives the disc transition bin 3 to rotate through the transmission of the reducer 5, so that the three transition chambers 7 are used to take turns to receive and discharge materials, thereby alleviating the feeding pressure of the bottom feed hopper 2 and avoiding the phenomenon of material blockage in the feed hopper 2.

[0054] Embodiment 3:

[0055] On the basis of Example 2, in order to improve the unloading of the transition chamber 7 more thoroughly and to load more materials during loading, a loosening mechanism for loosening materials is arranged inside the circulating feeding mechanism. Specifically, the loosening mechanism includes a loosening rack 8 movably installed in each transition chamber 7, and a driving device that drives the three loosening racks 8 to move back and forth in the transition chamber 7;

[0056] Among them, each loosening rack 8 includes a main rod 9 slidably connected to the transition chamber 7 and a sub-rod 10 arranged on the main rod 9. There are multiple sub-rods 10. The main rod 9 is connected to the driving device. The main rod 9 is driven to move and at the same time drives the sub-rod 10 to move back and forth, so as to loosen the material. When the transition chamber 7 is in the feeding state, the material is loosened to make the material reasonably stacked, which plays a role of carrying more materials. When the transition chamber 7 is in the unloading state, the material is loosened, so as to quickly unload the material in the transition chamber 7.

[0057] Specifically, the driving device includes a movable frame 11 slidably arranged in the disc transition bin 3 to drive the main rod 9 to move, and a driving mechanism arranged in the disc transition bin 3 to control the reciprocating movement of the movable frame 11;

[0058] Specifically, the driving mechanism includes a motor 12 arranged on one side of the movable frame 11 and two return springs 13 symmetrically arranged on both sides of the motor 12;

[0059] The output end of the motor 2 12 is provided with a cam 14 for driving the movable frame 11 to move;

[0060] Among them, the movable frame 11 is an isosceles trapezoidal structure, and the two sides of the movable frame 11 are respectively arranged with slots 15 slidably connected to two of the main rods 9. The ends of the main rods 9 slide in the slots 15, and the movement of the movable frame 9 pushes the two main rods 9 to slide on the slots 15. The middle of the movable frame 11 is fixedly connected to another main rod 9 located between the two main rods 9. Therefore, when the movable frame 11 moves under the drive of the cam 14, the two sides push the main rods 9 on both sides to move through the slots 15 (a wedge-shaped structure is formed between the movable frame 11 of the isosceles trapezoidal structure and the main rods 9, so as to push the main rods 9 to move when the movable frame 11 moves). At the same time, the other main rod 9 fixedly connected to the movable frame 11 at the center also moves synchronously. When the movable frame 11 is not in contact with the cam 14, the movable frame 11 is reset under the action of the reset spring 13, thereby driving the three main rods 9 to move again.

[0061] Embodiment 4:

[0062] On the basis of Example 3, in order to further avoid material blockage in the feed hopper 2, a conveying mechanism is arranged in the feed hopper 2, and the specific conveying mechanism includes a discharge barrel 16 arranged at the bottom of the feed hopper 2 for conveying materials to the vibrating screen, a passive gear 17 sleeved on the outer wall of the discharge barrel 16 and fixedly connected to the discharge barrel 16, a driving gear 18 meshing with the passive gear 17 and a motor 19 driving the driving gear 18 to rotate;

[0063] Among them, the inner wall of the discharge barrel 16 is arranged with a spiral inner cavity 20, and the discharge barrel 16 is rotatably connected to the feed hopper 2. When the discharge barrel 16 rotates, the spiral conveying direction of the spiral inner cavity 20 is arranged toward the discharge port. Under the drive of the motor three 19, the discharge barrel 16 is driven to rotate through the transmission action of the active gear 18 and the passive gear 17, so that the material inside it has a downward loosening force, thereby accelerating the flow of materials and further avoiding material blockage.

[0064] Working principle: When in use, the material is stored in the silo 1, and the material is transported to the disc transition bin 3 through the discharge port. Under the action of the motor 4 and the reducer 5, the three transition chambers 7 on the disc transition bin 3 are rotated to receive and discharge the material in a cycle. When the transition bin 3 opens upward, it starts to receive the material, and when the transition bin 3 opens toward the feed hopper 2 at the bottom, it starts to discharge the material. By controlling the rotation speed of the disc transition bin 3, the amount of material in the feed hopper 2 is adjusted, thereby relieving the material pressure in the feed hopper 2 and avoiding the material in the feed hopper 2 from being blocked.

[0065] When the feed hopper 2 is unloading, the motor 3 19 drives the driving gear 18 to rotate, and drives the driven gear 17 to drive the discharge barrel 6 to rotate. Since the inner wall of the discharge barrel 6 is arranged as a spiral inner cavity, the material can be transported downward when the discharge barrel 6 rotates, thereby improving the fluidity of the material and further avoiding material blockage.

[0066] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A feeding device for preventing material from getting stuck on a vibrating screen during sample preparation, characterized in that: include: A silo (1) for storing the loaded materials; A circulating feeding mechanism, arranged at the bottom of the silo (1) for feeding the transfer material; A feed hopper (2) is arranged at the bottom of the circulating feed bin (1) and is connected to the feed port of the vibrating screen; A loosening mechanism for loosening the material is arranged inside the circulating feeding mechanism, and a conveying mechanism for improving the fluidity of the material is also arranged on the feeding hopper (2).

2. A feeding device for preventing material from getting stuck in a vibrating screen during sample preparation according to claim 1, characterized in that: The circulating feeding mechanism comprises: A disc transition bin (3) for circulating material feeding; The rotating mechanism drives the disc transition bin (3) to rotate. The rotating mechanism comprises a motor (4) and a reducer (5) arranged at the output end of the motor (4), and the output shaft of the reducer (5) is coaxially connected to the disc transition bin (3).

3. A feeding device for preventing material from being stuck in a vibrating screen during sample preparation according to claim 2, characterized in that: A partition plate (6) is arranged in the disc transition bin (3), and the disc transition bin (3) is divided into three identical transition chambers (7) by the partition plate (6).

4. A feeding device for preventing material from being stuck in a vibrating screen during sample preparation according to claim 3, characterized in that: The loosening mechanism comprises: A material loosening rack (8), wherein three of the material loosening racks (8) are arranged, and the three material loosening racks (8) are movably installed one by one in each transition chamber (7); The driving device drives the material loosening rack (8) to move back and forth in the transition chamber (7) to accelerate the unloading of the materials; Each of the loosening racks (8) comprises a main rod (9) slidably connected to the transition chamber (7) and a secondary rod (10) arranged on the main rod (9), wherein a plurality of secondary rods (10) are arranged, and the main rod (9) is connected to a driving device.

5. A feeding device for preventing material from being stuck in a vibrating screen during sample preparation according to claim 4, characterized in that: The driving device comprises: A movable frame (11) is slidably arranged in the disc transition bin (3) to drive the main rod (9) to move; A driving mechanism is arranged in the disc transition bin (3) to control the reciprocating movement of the movable frame (11); Wherein, the movable frame (11) is an isosceles trapezoidal structure.

6. A feeding device for preventing material from getting stuck on a vibrating screen during sample preparation according to claim 5, characterized in that: The driving mechanism comprises: Motor 2 (12) is arranged on one side of the movable frame (11); Two return springs (13) are symmetrically arranged on both sides of the second motor (12); The output end of the second motor (12) is provided with a cam (14) for driving the movable frame (11) to move.

7. A feeding device for preventing material from getting stuck on a vibrating screen during sample preparation according to claim 6, characterized in that: The movable frame (11) has slots (15) arranged on both sides thereof for sliding connection with two of the main rods (9), and the middle of the movable frame (11) is fixedly connected with another main rod (9) located between the two main rods (9).

8. A feeding device for preventing material from getting stuck on a vibrating screen during sample preparation according to claim 7, characterized in that: The conveying mechanism comprises: A discharge cylinder (16) is arranged at the bottom of the feed hopper (2) and is used to convey materials to the vibrating screen; A passive gear (17) is sleeved on the outer wall of the discharge barrel (16) and is fixedly connected to the discharge barrel (16); A driving gear (18) meshingly connected with the driven gear (17); Motor 3 (19) drives the driving gear (18) to rotate; A spiral inner cavity (20) is arranged on the inner wall of the discharge barrel (16); Wherein, the discharge cylinder (16) is rotatably connected to the feed hopper (2).

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