A nested double auger feeder

Abstract

The utility model provides a nested double-twisted auger feeder, specifically related to the technical field of feeder, this feeder is installed between the storage barrel and the weighing equipment for powder and includes PLC controller, drive equipment, fixed axle sleeve and conveying cylinder, the conveying cylinder is arranged in fixed axle sleeve far from one end of drive equipment, the conveying cylinder is provided with small spiral mechanism and big spiral mechanism along its length direction in, big spiral mechanism surrounds the periphery of small spiral mechanism and the rotation between two does not affect each other, small spiral mechanism and big spiral mechanism all control its rotation through drive equipment and the rotating speed of small spiral mechanism is greater than the rotating speed of big spiral mechanism, the utility model has the advantages of simple and reasonable structure, convenient installation, completes the transmission of powdery material, cooperates the different rotating speed of big and small spiral mechanism at the same time, has certain stirring effect to powdery material, avoids the material caking, realizes even and continuous discharge.

Description

Technical Field

[0001] This utility model relates to the field of feeding machine technology, specifically to a nested double auger feeder. Background Technology

[0002] Most existing powder material feeders for weighing and conveying only have one or two parallel conveying mechanisms with a single transmission speed. Furthermore, powder materials are prone to clumping during transport, leading to uneven discharge or even large pieces falling off, thus causing inaccurate weighing problems. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a nested double auger feeder, the specific technical solution of which is as follows:

[0004] A nested double auger feeder is used to install between a storage hopper and a powder weighing device, including a PLC controller, a drive unit, a fixed bushing, and a conveying cylinder; the conveying cylinder is located at the end of the fixed bushing away from the drive unit; a small spiral mechanism and a large spiral mechanism are arranged along the length of the conveying cylinder; the large spiral mechanism surrounds the small spiral mechanism and their rotations do not affect each other; both the small spiral mechanism and the large spiral mechanism are controlled by the drive unit to rotate, and the rotational speed of the small spiral mechanism is greater than that of the large spiral mechanism.

[0005] Preferably, the small helical mechanism includes a shaft and small helical blades surrounding the surface of the shaft; the large helical mechanism includes a support base and a shaftless large helical blade fixed to one end of the support base; the central axis of the shaftless large helical blade is collinear with the central axis of the shaft.

[0006] Preferably, the driving device includes a servo motor and a planetary reducer disposed between the servo motor and the fixed bushing; the reduction mechanism of the planetary reducer includes a sun gear, planetary gears, and an internal gear ring; the sun gear meshes with the internal gear ring through the planetary gears; one end of the input shaft of the planetary reducer is connected to the output shaft of the servo motor, and the other end passes through the sun gear and is connected to one end of the shaft of the small helical blade; the other end of the shaft is rotatably connected to the side wall of the conveying cylinder away from the fixed bushing through a bearing; one end of the output shaft of the planetary reducer is connected to the planet carrier of the planetary gear, and the other end is connected to the end of the support base away from the shaftless large helical blade; the support base is rotatably connected to the inner cavity of the fixed bushing; the shaft is rotatably connected to the inner cavity of the support base through a bearing.

[0007] Preferably, the top of the conveying cylinder is provided with a feed inlet that communicates with the bottom of the storage tank.

[0008] Preferably, a discharge channel is provided at the bottom of the conveying cylinder on the side away from the planetary reducer.

[0009] Preferably, a discharge baffle is provided on the side of the discharge channel near its discharge port; one end of the discharge baffle is fixed to the rotating shaft, and the other end is a free end; the rotating shaft is rotatably connected to the inner side wall of the discharge channel; a push plate is provided on the side of the rotating shaft away from the discharge baffle, and a structural clearance is provided on the side wall of the discharge channel corresponding to the position of the push plate, and the push plate passes through the structural clearance and extends out of the discharge channel.

[0010] Preferably, a cylinder for controlling the rotation of the discharge baffle is provided at the bottom of the conveying cylinder near the discharge channel.

[0011] More preferably, a limiting plate is provided on the inner sidewall of the discharge channel at a position above the rotating shaft, thereby limiting the upward rotation angle of the discharge baffle.

[0012] Furthermore, preferably, the servo motor, cylinder, and weight sensor of the weighing device are all electrically connected to the PLC controller.

[0013] More preferably, when the discharge channel needs to be closed, the cylinder piston rod extends to push the push plate, the push plate drives the rotating shaft to rotate, thereby realizing the discharge baffle flipping upward until it abuts against the bottom of the limit plate, at which point the discharge port is blocked;

[0014] When the discharge channel needs to be opened, the cylinder piston rod shortens and disengages from the push plate, so that the push plate is not subjected to external force, and the discharge baffle flips downward, at which time the discharge port opens.

[0015] The beneficial effects of this utility model are:

[0016] This utility model has a simple and reasonable structure and is easy to install. By setting up large and small spiral mechanisms with different rotation speeds, it can achieve a certain stirring effect on powdered materials while conveying them. Compared with traditional feeders with parallel or single-row spiral mechanisms, it effectively solves the problem of material agglomeration and achieves continuous and uniform powder output. Attached Figure Description

[0017] The accompanying drawings constituting this utility model are provided to further understand this application and do not constitute an undue limitation on this application.

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

[0019] Figure 2 for Figure 1 Side view;

[0020] Figure 3 for Figure 2 Sectional view at point AA;

[0021] In the diagram, 1-servo motor; 2-planetary reducer; 201-sun gear; 202-planetary gear; 2021-output shaft; 203-internal gear ring; 3-fixed bushing; 4-feed inlet; 5-conveying cylinder; 6-discharge channel; 601-rotating shaft; 6011-push plate; 602-discharge baffle; 603-limiting plate; 7-cylinder; 8-small helical blade; 9-shaftless large helical blade; 10-shaft; 11-support base. Detailed Implementation

[0022] The specific implementation of the nested double auger feeder provided by this utility model will be further described with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 and Figure 3 As shown, a nested double auger feeder is used to be installed between a storage hopper and a powder weighing device, including a PLC controller, a drive device, a fixed bushing 3 and a conveying cylinder 5; wherein, the conveying cylinder 5 is located at the end of the fixed bushing 3 away from the drive device.

[0024] To achieve material transfer within the conveying cylinder and simultaneously agitate the powdery material to ensure uniform discharge without clumping, a small spiral mechanism and a large spiral mechanism are arranged along the length of the conveying cylinder 5. Both the small and large spiral mechanisms are controlled by a drive device. It is worth emphasizing that, unlike common feeders with single-row or parallel spiral mechanisms, the large spiral mechanism provided in this invention surrounds the small spiral mechanism, and their rotations do not affect each other. Specifically, the small spiral mechanism includes a shaft 10 and small spiral blades 8 surrounding the surface of the shaft 10; the large spiral mechanism includes a support base 11 and a shaftless large spiral blade 9 fixed to one end of the support base 11. It is noteworthy that the central axis of the shaftless large spiral blade 9 is collinear with the central axis of the shaft 10, and the rotational speed of the small spiral mechanism is greater than that of the large spiral mechanism (preferably, the rotational speed of the small spiral mechanism is approximately three times that of the large spiral mechanism). Utilizing this difference in rotational speed, real-time agitation of the powdery material is achieved during conveying, preventing clumping.

[0025] Preferably, the drive device includes a servo motor 1 and a planetary reducer 2 disposed between the servo motor 1 and the fixed bushing 3. The planetary reducer 2's reduction mechanism includes a sun gear 201, planetary gears 202, and an internal gear ring 203; the sun gear 201 meshes with the internal gear ring 203 through the planetary gears 202.

[0026] Specifically, one end of the input shaft of the planetary reducer 2 is connected to the output shaft of the servo motor 1, and the other end passes through the sun gear 201 and is connected to one end of the shaft 10 of the small helical blade 8. The other end of the shaft 10 is rotatably connected to the side wall of the conveying cylinder 5 away from the fixed bushing 3 via a bearing. One end of the output shaft of the planetary reducer 2 is connected to the planet carrier (not marked in the figure) of the planetary gear 202, and the other end is connected to the end of the support base 11 away from the fixed shaftless large helical blade 9.

[0027] It is worth noting that the planetary reducer 2 mentioned in this utility model is a known prior art, and its detailed structure and working principle will not be described in detail here.

[0028] Preferably, the support base 11 is rotatably connected to the inner cavity of the fixed bushing 3; the shaft 10 is rotatably connected to the inner cavity of the support base 11 via a bearing.

[0029] like Figure 2 As shown, the top of the conveying cylinder 5 is provided with a feed inlet 4 that communicates with the bottom of the storage tank; a discharge channel 6 is provided on the bottom side of the conveying cylinder 5 away from the planetary reducer 2, and the discharge port at the bottom of the discharge channel 6 faces the top of the powder weighing equipment. Specifically, a discharge baffle 602 is provided on the side of the discharge channel 6 near its bottom discharge port; one end of the discharge baffle 602 is fixed to the rotating shaft 601, and the other end is a free end. The rotating shaft 601 is rotatably connected to the inner wall of the discharge channel 6, and a push plate 6011 is provided on the side of the rotating shaft 601 away from the discharge baffle 602. The side wall of the discharge channel 6 is provided with a structural clearance corresponding to the position of the push plate 6011. During installation, the push plate 6011 passes through the structural clearance and extends out of the discharge channel 6. A cylinder 7 is provided at the bottom of the conveying cylinder 5 near the discharge channel 6 to control the rotation of the discharge baffle 602.

[0030] In order to limit the upward tilting angle of the discharge baffle 602, a limit plate 603 is provided on the inner side wall of the discharge channel 6 at a position corresponding to the position above the rotating shaft 601.

[0031] It is worth noting that the servo motor 1, cylinder 7, and weight sensor of the weighing device are all electrically connected to the PLC controller.

[0032] When the discharge channel 6 needs to be closed, the piston rod of the cylinder 7 extends and pushes the push plate 6011. The push plate 6011 drives the rotating shaft 601 to rotate, thereby causing the discharge baffle 602 to flip upward until it abuts against the bottom of the limit plate 603. At this time, the discharge port is blocked.

[0033] When the discharge channel needs to be opened, the piston rod of cylinder 7 shortens and disengages from push plate 6011, so that push plate 6011 is not subject to external force, and discharge baffle 602 flips downward due to gravity, at which time the discharge port opens.

[0034] The specific working principle of this utility model is as follows:

[0035] In use, the feeder and weighing equipment are started by the PLC controller. The powder enters the feed inlet from the storage bin. The servo motor 1 sets the speed according to the required powder output, which drives the small spiral blade 8 and the shaftless large spiral blade 9 to rotate. The powdered material is transported by the small spiral blade 8 and the shaftless large spiral blade 9 at different speeds. On the one hand, the powdered material is transported, and on the other hand, the powdered material is agitated during the transport process to prevent the material from clumping and to ensure uniform and continuous output. When the weight sensor of the weighing equipment detects that the required weight of the material has been obtained, the weight sensor sends a signal to the PLC controller. The PLC controller immediately controls the cylinder to run, and the discharge baffle blocks the discharge port to prevent excess powder from falling onto the weighing equipment due to the vibration of the equipment, which would affect the weighing accuracy. At the same time, the servo motor 1 stops running, thus completing one accurate weighing of the material.

[0036] It is worth emphasizing that the feeding process of the large and small spiral mechanisms in this invention is divided into three stages: rapid feeding, slow feeding, and fine feeding. In use, the rotational speed of the spiral mechanism is preset via a PLC controller according to the required material mass, thereby controlling the output of the powdered material. All control programs and instructions in this invention can be implemented using existing technologies; therefore, further details on how known control programs and software work together are omitted here.

[0037] In this utility model, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this utility model and do not specifically refer to any part or element of this utility model; they should not be construed as limiting this utility model. Terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and they should not be construed as limiting this utility model.

[0038] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A nested double auger feeder, used for installation between a storage hopper and a powder weighing device, characterized in that, Includes PLC controller, drive unit, fixed bushing and conveyor cylinder; The conveying cylinder is located at the end of the fixed bushing away from the drive device; The conveying cylinder is provided with a small spiral mechanism and a large spiral mechanism along its length; the large spiral mechanism surrounds the small spiral mechanism and the rotation of the two does not affect each other; Both the small spiral mechanism and the large spiral mechanism are controlled to rotate by a drive device, and the rotational speed of the small spiral mechanism is greater than that of the large spiral mechanism.

2. The nested double auger feeder according to claim 1, characterized in that, The small helical mechanism includes a shaft and small helical blades surrounding the surface of the shaft; The large helical mechanism includes a support base and a shaftless large helical blade fixed to one end of the support base; The central axis of the shaftless large helical blade is collinear with the central axis of the shaft.

3. The nested double auger feeder according to claim 2, characterized in that, The drive device includes a servo motor and a planetary reducer disposed between the servo motor and the fixed bushing. The reduction mechanism of the planetary reducer includes a sun gear, planet gears, and an internal gear ring; the sun gear meshes with the internal gear ring through the planet gears. One end of the input shaft of the planetary reducer is connected to the output shaft of the servo motor, and the other end passes through the sun gear and is connected to one end of the shaft of the small helical blade. The other end of the shaft is rotatably connected to the side wall of the conveying cylinder away from the fixed bushing through a bearing. One end of the output shaft of the planetary reducer is connected to the planet carrier of the planetary gear, and the other end is connected to the end of the support base away from the shaftless large helical blade. The support base is rotatably connected to the inner cavity of the fixed bushing; the shaft is rotatably connected to the inner cavity of the support base via a bearing.

4. The nested double auger feeder according to claim 1, characterized in that, The top of the conveying cylinder is provided with a feed inlet that communicates with the bottom of the storage tank.

5. The nested double auger feeder according to claim 3, characterized in that, The bottom of the conveying cylinder, away from the planetary reducer, is provided with a discharge channel.

6. The nested double auger feeder according to claim 5, characterized in that, A discharge baffle is provided on one side of the discharge channel near its discharge port; one end of the discharge baffle is fixed to the rotating shaft, and the other end is a free end; the rotating shaft is rotatably connected to the inner wall of the discharge channel. A push plate is provided on the side of the rotating shaft away from the discharge baffle. A structural clearance is provided on the side wall of the discharge channel corresponding to the position of the push plate. The push plate passes through the structural clearance and extends out of the discharge channel.

7. The nested double auger feeder according to claim 6, characterized in that, A cylinder for controlling the rotation of the discharge baffle is installed at the bottom of the conveying cylinder near the discharge channel.

8. The nested double auger feeder according to claim 6, characterized in that, A limit plate is provided on the inner wall of the discharge channel at a position above the rotating shaft, which limits the upward rotation angle of the discharge baffle.

9. The nested double auger feeder according to claim 7, characterized in that, The servo motor, cylinder, and weight sensor of the weighing equipment are all electrically connected to the PLC controller.

10. The nested double auger feeder according to claim 9, characterized in that, When the discharge channel needs to be closed, the cylinder piston rod extends to push the push plate, which drives the rotating shaft to rotate, thereby causing the discharge baffle to flip upward until it abuts against the bottom of the limit plate, at which point the discharge port is blocked. When the discharge channel needs to be opened, the cylinder piston rod shortens and disengages from the push plate, so that the push plate is not subjected to external force, and the discharge baffle flips downward, at which time the discharge port opens.

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