Auxiliary discharging mechanism for preventing powder from hardening and overhead

Abstract

The utility model discloses an auxiliary blanking mechanism for preventing powder from hardening and overhead, which relates to the field of filter stock solution batching, and adopts the technical scheme that the auxiliary blanking mechanism comprises a hopper, a main transmission shaft driven by a motor is mounted at the bottom end inside the hopper, and an auger is fixedly connected onto the main transmission shaft; the main transmission shaft drives the movable frames located on the two side walls of the interior of the hopper through the transmission assembly, the effect is that the powder can be continuously disturbed through vertical movement of the movable frames, the tight meshing state between fibers is destroyed, and the powder can be conveyed out of the hopper from the top of the hopper. When the material accumulation or preliminary compaction trend occurs in the area above the auger, the reciprocating motion of the movable frame can disperse the powder through mechanical force, so that the powder above smoothly falls and is supplemented to the conveying area of the auger under the action of gravity, and material conveying interruption caused by hardening and overhead is avoided; therefore, continuous and stable conveying of powder in the hopper is ensured.

Description

Technical Field

[0001] This utility model relates to the field of filter raw material preparation, and more specifically, it relates to an auxiliary feeding mechanism to prevent powder from caking and becoming loose. Background Technology

[0002] In the batching operation of the filter raw material tank, an auxiliary feeding mechanism is needed to put powder into the tank and stir it. This mechanism mainly consists of a hopper and a feeding component.

[0003] The auger, a commonly used feeding component (one part of the feeding assembly), faces a challenging problem when conveying fibrous powders such as wood fibers. Wood fibers have a unique fibrous structure. When they enter the hopper and are continuously compressed and pushed by the auger's spiral blades, the fibers become entangled and tightly interlocked due to high friction. As the auger continues to operate, this compression gradually intensifies, compacting the powder in the hopper above the auger into a highly dense solid. Due to the combined effects of gravity and the mechanical compression of the material in the hopper, this solid gradually forms a hardened layer above the auger. A void is created below this hardened layer due to the auger's conveying action, but the powder above cannot fall smoothly to fill it, ultimately leading to a void inside the hopper. Once this occurs, the auger loses its continuous material supply, forcing the conveying process to stop, severely impacting the batching efficiency of the filter feed tank and the continuity of the production process.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes an auxiliary feeding mechanism to prevent powder from caking and becoming loose. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an auxiliary feeding mechanism to prevent powder from caking and becoming loose.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary feeding mechanism to prevent powder from caking and becoming loose, comprising a hopper, wherein a main drive shaft driven by a motor is installed at the bottom of the hopper, and an auger is fixedly connected to the main drive shaft to feed the powder entering the hopper from the top of the hopper out of the discharge port. The main drive shaft drives the movable frame located on the two side walls inside the hopper through a transmission assembly, so that the movable frame can move up and down relative to the inner side wall of the hopper.

[0007] Preferably, the motor is connected to the surface of the hopper via a mounting bracket, and a reducer is installed at the output shaft end of the motor.

[0008] Preferably, the transmission assembly includes a gear A fixed on the outer wall of the main drive shaft, and two gears B meshing on the outer wall of gear A, with a transmission rod embedded in the center of gear B.

[0009] Preferably, the side end of the transmission rod 703 is connected to the cam 706 via a hexagonal rod 705. Two cams 706 are provided on one transmission rod 703, and the cams 706 are connected to each other via a connecting rod 715. The lower part of the inner side wall of the hopper is provided with connecting plates A with U-shaped grooves and vertical orientation on both sides. The two ends of the movable frame near the bottom are fixedly connected with crossbars passing through the U-shaped grooves. Circular baffles are provided on the outer side walls of the crossbars to abut against the opposing surfaces of the two connecting plates A, thereby restricting the crossbars within the U-shaped grooves. The part of the crossbar passing through the U-shaped grooves contacts the cams.

[0010] Preferably, the transmission assembly further includes a connecting plate B fixed to the upper part of the inner side wall of the hopper and in a horizontal position. The top two sides of the movable frame are fixedly connected to connecting discs, and the top of the connecting discs are welded with vertical rods. The connecting plate B has a circular through groove for the vertical rods to pass through. The outer side wall of the vertical rod is fitted with a spring at the lower part of the connecting plate B.

[0011] Preferably, a bearing B is fitted on the outer wall of the crossbar and rotatably connected thereto, and the bearing B contacts the cam.

[0012] Preferably, the mounting bracket has three bearings A installed inside, which respectively provide rotational support for the main drive shaft and the two drive rods.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model can continuously disturb the powder by moving the movable frame up and down, breaking the tight interlocking state between fibers and preventing the formation and solidification of the screed layer. When material accumulates or shows a preliminary compaction trend in the area above the auger, the reciprocating motion of the movable frame can disperse the powder through mechanical force, allowing the powder above to fall smoothly under the action of gravity to replenish the auger conveying area, avoiding material conveying interruption caused by screeding and emptying, thereby ensuring the continuous and stable conveying of powder inside the hopper, and effectively solving the problem of low batching efficiency caused by screeding and emptying of fibrous powder in the background technology.

[0015] 2. This utility model uses a speed reducer to precisely control the rotation speed, reducing the high-speed rotation of the motor to a low-speed range suitable for material conveying, thus avoiding excessive fiber compression and caking due to excessive speed.

[0016] 3. This utility model uses bearing B to contact the cam, transforming traditional sliding friction into rolling friction, effectively dispersing contact stress and avoiding pitting on the cam surface and localized wear on the crossbar that are easily caused by traditional sliding contact. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This utility model Figure 1 Another perspective on the specific structure;

[0020] Figure 3 This is a schematic diagram of the internal structure of the hopper in this utility model;

[0021] Figure 4 This is a schematic diagram of the specific structure of this utility model after the hopper is removed;

[0022] Figure 5 For the present utility model in Figure 4 A schematic diagram of the specific structure after removing the mounting bracket side plates;

[0023] Figure 6 This is a schematic diagram of the specific structure of the cam in this utility model.

[0024] In the diagram: 1. Hopper; 2. Motor; 3. Mounting frame; 4. Main drive shaft; 5. Screwdriver; 6. Movable frame; 7. Transmission assembly; 701. Gear A; 702. Gear B; 703. Transmission rod; 704. Bearing A; 705. Hexagonal rod; 706. Cam; 707. Connecting plate A; 7071. U-shaped groove; 708. Connecting plate B; 7081. Circular through groove; 709. Connecting disc; 710. Vertical rod; 711. Spring; 712. Bearing B; 713. Horizontal rod; 714. Circular baffle; 715. Connecting rod; 8. Reducer; 9. Discharge port. Detailed Implementation

[0025] like Figure 1-6As shown, this utility model provides an auxiliary feeding mechanism to prevent powder from caking and becoming loose. It includes a hopper 1, and a main drive shaft 4 driven by a motor 2 is installed at the bottom of the hopper 1. An auger 5 is fixedly connected to the main drive shaft 4 to feed the powder entering the hopper 1 from the top through the discharge port 9. The main drive shaft 4 drives the movable frame 6 located on the two inner side walls of the hopper 1 through a transmission assembly 7, so that the movable frame 6 can move up and down relative to the inner side wall of the hopper 1. The motor 2 is connected to the surface of the hopper 1 through a mounting bracket 3. A reducer 8 is installed at the output shaft end of the motor 2. The speed is precisely controlled by the reducer 8 to reduce the high speed of the motor 2 (usually 1500-3000 rpm) to a low speed range (20-100 rpm) suitable for material conveying, so as to avoid excessive fiber compression and caking due to excessive speed.

[0026] When motor 2 starts, it drives the main drive shaft 4 to rotate. The auger 5, fixed on the main drive shaft 4, rotates accordingly, pushing the powder entering from the top of hopper 1 out of the discharge port 9 through the pushing action of the spiral blades, thus realizing the powder conveying function. At the same time, the main drive shaft 4 transmits power to the movable frame 6 on the inner side walls of hopper 1 through the transmission assembly 7, allowing it to move up and down relative to the inner side walls of hopper 1. During the process of the auger 5 extruding and pushing the powder, in response to the problem that wood fibers and other materials are prone to forming a compacted and caking layer in the hopper 1 area above the auger 5 due to friction and entanglement, the up and down movement of the movable frame 6 can continuously disturb the powder in this area, breaking the tight interlocking state between the fibers and preventing the formation and solidification of the caking layer. When material accumulates or shows a preliminary compaction trend in the area above the auger 5, the reciprocating motion of the movable frame 6 can disperse the powder through mechanical force, allowing the powder above to fall smoothly under the action of gravity to replenish the conveying area of ​​the auger 5, avoiding the interruption of material conveying due to caking and emptying, thereby ensuring the continuous and stable conveying of powder inside hopper 1.

[0027] The following is the specific structure of the transmission assembly 7: The transmission assembly 7 includes a gear A701 fixed on the outer wall of the main drive shaft 4, and two gears B702 meshing on the outer wall of gear A701. A transmission rod 703 is embedded and fixed in the center of gear B702. The side end of the transmission rod 703 is connected to a cam 706 through a hexagonal rod 705. Two cams 706 are equipped on one transmission rod 703, and the cams 706 are connected to each other through a connecting rod 715. On both sides of the lower part of the inner side wall of the hopper 1, there are vertical connecting plates A707 with U-shaped grooves 7071 (the connecting plates A707 also have through holes for the transmission rod 703 to pass through). The two ends of the movable frame 6 near the bottom are fixedly connected with crossbars 713 passing through the U-shaped grooves 7071. Circular baffles 714 are provided on the outer side walls to abut the opposing surfaces of the two connecting plates A707, thereby restricting the crossbar 713 within the U-shaped groove 7071. The part of the crossbar 713 passing through the U-shaped groove 7071 contacts the cam 706. The transmission assembly 7 also includes a horizontal connecting plate B708 ​​fixed to the upper part of the inner side wall of the hopper 1. Connecting discs 709 are fixedly connected to both sides of the top of the movable frame 6, and vertical rods 710 are welded to the top of the connecting discs 709. A circular through groove 7081 for the vertical rod 710 to pass through is opened inside the connecting plate B708. A spring 711 is sleeved on the outer side wall of the vertical rod 710 below the connecting plate B708. Three bearings A704 are installed inside the mounting frame 3 to provide rotational support for the main drive shaft 4 and the two drive rods 703, respectively.

[0028] When motor 2 drives the main drive shaft 4 to rotate, gear A701, fixed to the outer wall of the main drive shaft 4, rotates synchronously, driving gears B702 on both sides to rotate in opposite directions through meshing. The transmission rod 703 at the center of gear B702 rotates stably under the support of bearing A704, and the hexagonal rod 705 at its side end transmits torque to cam 706, causing cam 706 to make circular motion around the axis. The bottom crossbar 713 of the movable frame 6 passes through the U-shaped groove 7071 of the connecting plate A707 and contacts the contour of cam 706. The circular baffle 714 restricts the crossbar 713 from sliding in the U-shaped groove 7071. When the cam 706 rotates to the point where the protruding part lifts the crossbar 713, the movable frame 6 rises as a whole. At this time, the vertical rod 710 moves upward in the circular through groove 7081 of the connecting plate B708 ​​and compresses the spring 711. When the protruding part of the cam 706 moves away from the crossbar 713, the elastic restoring force of the spring 711 pushes the connecting plate 709 and the movable frame 6 to descend and reset. Through the continuous rotation of the cam 706, the movable frame 6 achieves periodic up-and-down reciprocating motion on the inner wall of the hopper 1. Its motion frequency is proportional to the rotation speed of the main drive shaft 4, thereby continuously disturbing the powder above the auger and effectively preventing caking and bridging. (The movement of the crossbar 713 in the U-shaped groove 7071 and the vertical rod 670 moving up and down along the circular through groove 7081 can limit the movable frame 6, making it only able to move up and down relative to the inner wall of the hopper 1.)

[0029] Furthermore, a bearing B712 is fitted on the outer wall of the crossbar 713 and rotates therewith. Through the contact between the bearing B712 and the cam 706, the traditional sliding friction is transformed into rolling friction, which effectively disperses the contact stress and avoids pitting on the surface of the cam 706 and local wear of the crossbar 713 that are easily caused by traditional sliding contact.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. An auxiliary feeding mechanism for preventing powder from caking and becoming loose, comprising a hopper (1), wherein a main drive shaft (4) driven by a motor (2) is installed at the bottom of the hopper (1), and an auger (5) is fixedly connected to the main drive shaft (4) to feed powder entering the hopper (1) from the top through a discharge port (9), characterized in that: The main drive shaft (4) drives the movable frame (6) located on both sides of the inner wall of the hopper (1) through the transmission assembly (7), so that the movable frame (6) can move up and down relative to the inner wall of the hopper (1).

2. The auxiliary feeding mechanism for preventing powder from caking and becoming loose, as described in claim 1, is characterized in that: The motor (2) is connected to the surface of the hopper (1) via a mounting bracket (3), and a reducer (8) is installed on the output shaft end of the motor (2).

3. The auxiliary feeding mechanism for preventing powder from caking and becoming loose, as described in claim 2, is characterized in that: The transmission assembly (7) includes a gear A (701) fixed on the outer wall of the main drive shaft (4), and two gears B (702) meshing on the outer wall of the gear A (701), with a transmission rod (703) embedded in the center of the gear B (702).

4. The auxiliary feeding mechanism for preventing powder from caking and becoming loose, as described in claim 3, is characterized in that: The side end of the transmission rod (703) is connected to the cam (706) via a hexagonal rod (705). Two cams (706) are provided on one transmission rod (703). The cams (706) are connected to each other via a connecting rod (715). The inner side wall of the hopper (1) is provided with connecting plates A (707) with U-shaped grooves (7071) and vertical orientation on both sides. The movable frame (6) is fixedly connected with crossbars (713) passing through the U-shaped grooves (7071) at both ends near the bottom. Circular baffles (714) are provided on the outer side wall of the crossbars (713) to abut against the opposite surfaces of the two connecting plates A (707), thereby restricting the crossbars (713) within the U-shaped grooves (7071). The part of the crossbars (713) passing through the U-shaped grooves (7071) contacts the cams (706).

5. The auxiliary feeding mechanism for preventing powder from caking and becoming loose, as described in claim 4, is characterized in that: The transmission assembly (7) also includes a connecting plate B (708) fixed to the upper part of the inner side wall of the hopper (1) and in a horizontal position. The top of the movable frame (6) is fixedly connected to both sides of the connecting plate (709), and the top of the connecting plate (709) is welded with a vertical rod (710). The connecting plate B (708) has a circular through groove (7081) for the vertical rod (710) to pass through. The outer side wall of the vertical rod (710) is fitted with a spring (711) at the part below the connecting plate B (708).

6. The auxiliary feeding mechanism for preventing powder from caking and becoming loose, as described in claim 4, is characterized in that: The crossbar (713) is fitted with a bearing B (712) that is rotatably connected to it, and the bearing B (712) contacts the cam (706).

7. The auxiliary feeding mechanism for preventing powder caking and bridging according to claim 3, characterized in that: The mounting bracket (3) has three bearings A (704) installed inside, which provide rotational support for the main drive shaft (4) and the two drive rods (703).

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