Powder conveying device

Abstract

A powder conveying device, comprising: a feeding mechanism, which comprises a powder bin (110) and a stirring paddle (120), wherein the stirring paddle (120) is rotatably arranged in the powder bin (110); a discharging mechanism (300), which comprises a screw tube (330) and a screw assembly, wherein the screw assembly is arranged in the screw tube (330), and the powder bin (110) is in communication with the screw tube (330); and a driving mechanism (200), which comprises an electric motor (210), a first transmission gear (220) and an output gear (230), wherein the electric motor (210) drives the output gear (230) to rotate by means of the first transmission gear (220), and the output gear (230) drives both the stirring paddle (120) and the screw assembly to move. The electric motor (210) drives both the stirring paddle (120) and the screw assembly to move, such that the stirring paddle (120) stirs powder in the powder bin (110), causing the powder to fall into the screw tube (330); and the screw assembly then conveys the powder out of the screw tube (330). The structure is simple and stable, and production costs are reduced.

Description

Powder conveying device TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveying, in particular to a powder conveying device. BACKGROUND

[0002] Most of the existing powder conveying devices use a separate motor to open and close the powder outlet through a gear or connecting rod mechanism, and another motor is used to realize the transmission of the powder. The mechanism is cumbersome and has high cost and poor stability. At the same time, most of the powder outlets use powder grids to intermittently discharge powder, and the powder discharge amount is limited by the size and number of the grids and cannot be accurately controlled.

[0003] SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a powder conveying device with simple and stable structure and reduced cost.

[0005] The powder conveying device according to the first aspect of the present application comprises: a feeding mechanism comprising a powder bin and a stirring paddle, the stirring paddle being rotatably arranged in the powder bin; a discharging mechanism comprising a screw pipe and a screw rod assembly, the screw rod assembly being arranged in the screw pipe, the powder bin being in communication with the screw pipe; and a driving mechanism comprising a motor, a first transmission gear and an output gear, the motor driving the output gear to rotate through the first transmission gear, the output gear driving the stirring paddle and the screw rod assembly to move simultaneously.

[0006] The powder conveying device according to the present application has at least the following beneficial effects: the motor drives the stirring paddle and the screw rod assembly to move simultaneously, the stirring paddle stirs the powder in the powder bin, the powder falls into the screw pipe, and the screw rod assembly sends the powder out of the screw pipe, thus achieving a simple and stable structure and reducing production cost.

[0007] According to some embodiments of the present application, the powder conveying device further comprises a control mechanism, the control mechanism comprising a control device and a control assembly, the control device being electrically connected with the control assembly and the motor respectively, and the control device adjusting the rotating speed of the motor in cooperation with the control assembly.

[0008] According to some embodiments of the present application, the control assembly comprises a Hall sensor and a plurality of magnets, the plurality of magnets being arranged on the first transmission gear, and the plurality of magnets being arranged equidistantly along the circumference, the Hall sensor being used for sensing the magnets.

[0009] According to some embodiments of the present application, the output gear comprises a first tooth portion and a second tooth portion, the first tooth portion driving the stirring paddle to rotate, and the second tooth portion driving the screw rod assembly to move.

[0010] According to some embodiments of the present application, a lower end of the powder bin is rotatably provided with a transmission pipe, the transmission pipe is in communication with the screw rod, a third tooth portion is provided outside the transmission pipe and is engaged with the first tooth portion, and the transmission pipe is clamped with the stirring paddle.

[0011] According to some embodiments of the present application, the stirring paddle comprises a first connecting block and a plurality of stirring blocks, the plurality of stirring blocks are circumferentially arranged on the first connecting block, and the plurality of stirring blocks are arranged at intervals.

[0012] According to some embodiments of the present application, a reinforcing block is connected between two adjacent stirring blocks.

[0013] According to some embodiments of the present application, the first connecting block is hollow, the first connecting block is in a square shape as a whole, the transmission pipe is provided with a second connecting block, the second connecting block is provided with a plug-in hole matched with the first connecting block, and the first connecting block is plug-in matched with the plug-in hole.

[0014] According to some embodiments of the present application, the screw rod assembly comprises a connecting shaft and a screw rod, one end of the screw rod is sleeved with the connecting shaft, the other end of the screw rod is provided with an end cover, and the output gear drives the screw rod to move through the connecting shaft, so that the end cover opens or closes the discharge port of the screw pipe.

[0015] According to some embodiments of the present application, the screw rod is provided with a guide column in the radial direction, a side wall of the connecting shaft is provided with a guide hole matched with the guide column, the guide column is plug-in matched with the guide hole, and the guide hole spirally extends along the axial direction of the connecting shaft.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0018] FIG. 1 is a schematic view of a powder conveying device according to an embodiment of the present application;

[0019] FIG. 2 is a sectional view of the powder conveying device according to an embodiment of the present application;

[0020] FIG. 3 is a schematic view of a stirring paddle in the powder conveying device according to an embodiment of the present application;

[0021] FIG. 4 is a schematic view of the cooperation between a connecting shaft and a screw rod in the powder conveying device according to an embodiment of the present application.

[0022] Explanation of reference signs: powder bin 110, stirring paddle 120, stirring block 121, reinforcing block 122, first connecting block 123, transmission pipe 130, third tooth part 131, second connecting block 132; driving mechanism 200, motor 210, first transmission gear 220, output gear 230, first tooth part 231, second tooth part 232; discharging mechanism 300, connecting shaft 310, guide hole 311, screw rod 320, guide column 321, screw pipe 330, end cover 340; Hall sensor 410, magnet 420. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0024] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application, which indicates or implies that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two. Greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If the first and second are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0026] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0027] Referring to FIG. 1 and FIG. 2, the powder conveying device of the first aspect embodiment of the present application comprises: a feeding mechanism comprising a powder bin 110 and a stirring paddle 120, the stirring paddle 120 being rotatably arranged in the powder bin 110; a discharging mechanism 300 comprising a screw pipe 330 and a screw assembly, the screw assembly being arranged in the screw pipe 330, the powder bin 110 being in communication with the screw pipe 330; a driving mechanism 200 comprising a motor 210, a first transmission gear 220 and an output gear 230, the motor 210 driving the output gear 230 to rotate through the first transmission gear 220, the output gear 230 simultaneously driving the stirring paddle 120 and the screw assembly to move.

[0028] The motor 210 drives the output gear 230 to rotate through the first transmission gear 220, and the output gear 230 simultaneously drives the stirring paddle 120 and the screw assembly to move, so that the stirring paddle 120 stirs the powder in the powder bin 110, and at the same time, the screw assembly starts to send the powder out of the screw pipe 330, which simplifies the transmission structure, reduces the production cost and has a simple and stable structure.

[0029] It can be understood that, referring to FIG. 1 and FIG. 2, the powder conveying device further comprises a control mechanism, the control mechanism comprising a control device and a control assembly, the control device being electrically connected with the control assembly and the motor 210 respectively, and the control device adjusting the rotating speed of the motor 210 in cooperation with the control assembly. Through the cooperation of the control device and the control assembly, the rotating speed of the motor 210 is adjusted, so as to realize the control of the powder conveying amount of the screw assembly.

[0030] Specifically, referring to FIG. 1 and FIG. 2, the control assembly comprises a Hall sensor 410 and a plurality of magnets 420, the plurality of magnets 420 being arranged on the first transmission gear 220, and the plurality of magnets 420 being arranged at equal intervals along the circumference, and the Hall sensor 410 being used for sensing the magnets 420. When the first transmission gear 220 rotates, the magnets 420 pass through the Hall sensor 410, and the Hall sensor 410 reads a pulse, so that the number of rotations and the angle of the first transmission gear 220 can be known, and thus the rotating speed of the motor 210 is controlled through the control device, so that the powder conveying amount can be conveyed according to the user's demand, and the accuracy of the powder conveying amount is improved.

[0031] It can be understood that, referring to FIG. 1 and FIG. 2, the output gear 230 comprises a first tooth portion 231 and a second tooth portion 232, the first tooth portion 231 driving the stirring paddle 120 to rotate, and the second tooth portion 232 driving the screw assembly to move. The first tooth portion 231 and the second tooth portion 232 on the output gear 230 are respectively in transmission with the stirring paddle 120 and the screw assembly, so that the screw assembly and the stirring paddle 120 move synchronously.

[0032] It can be understood that, with reference to Figures 1 and 2, the lower end of the powder bin 110 is rotatably provided with a transmission pipe 130, the transmission pipe 130 is in communication with the screw rod 320, the outer side of the transmission pipe 130 is provided with a third tooth portion 131 which is engaged with the first tooth portion 231, and the transmission pipe 130 is clamped with the stirring paddle 120. The stirring paddle 120 is clamped with the transmission pipe 130, so that when the output gear 230 rotates, the transmission pipe 130 is driven to rotate through the engagement between the first tooth portion 231 and the third tooth portion 131, thereby driving the stirring paddle 120 to rotate. The transmission pipe 130 is hollow, and the powder in the powder bin 110 flows into the screw pipe 330 through the transmission pipe 130.

[0033] It can be understood that, with reference to Figures 1 and 3, the stirring paddle 120 comprises a first connecting block 123 and a plurality of stirring blocks 121, the plurality of stirring blocks 121 are circumferentially arranged on the first connecting block 123, the plurality of stirring blocks 121 are arranged at intervals, and the first connecting block 123 is clamped with the transmission pipe 130. When the stirring paddle 120 rotates, the stirring blocks 121 agitate the powder in the powder bin 110, so that the powder enters the transmission pipe 130 from the gaps between the stirring blocks 121 and is sent into the screw pipe 330 through the transmission pipe 130, thereby avoiding the powder from caking in the powder bin 110.

[0034] It can be understood that, with reference to Figure 3, a reinforcing block 122 is connected between two adjacent stirring blocks 121, so as to reinforce the structural strength of the stirring blocks 121 and improve the service life of the stirring paddle 120.

[0035] It can be understood that, with reference to Figures 1 and 3, the first connecting block 123 is hollow, the first connecting block 123 is in the shape of a square as a whole, the transmission pipe 130 is provided with a second connecting block 132, the second connecting block 132 is provided with a plug-in hole which is matched with the first connecting block 123, and the first connecting block 123 is plug-in matched with the plug-in hole. The first connecting block 123 is in the shape of a square as a whole, and the plug-in hole is matched with the first connecting block 123, so that when the first connecting block 123 is plugged into the plug-in hole, the resistance between the first connecting block 123 and the second connecting block 132 is increased when the transmission pipe 130 drives the stirring paddle 120 to rotate, thereby reducing the risk of the first connecting block 123 slipping in the plug-in hole. Meanwhile, an elastic buckle can be arranged on the first connecting block 123, so that when the first connecting block 123 is plugged into the plug-in hole, the buckle is buckled with the second connecting block 132, thereby stably combining the first connecting block 123 with the second connecting block 132.

[0036] It can be understood that, referring to FIG. 2 and FIG. 4, the screw assembly comprises the connecting shaft 310 and the screw 320, one end of the screw 320 is sleeved with the connecting shaft 310, and the other end of the screw 320 is provided with the end cover 340. The output gear 230 drives the screw 320 to move through the connecting shaft 310, so as to open or close the discharge port of the screw pipe 330. The output gear 230 drives the connecting shaft 310 to rotate, and the connecting shaft 310 drives the screw 320 to move, drives the screw 320 to rotate and move along the axial direction of the screw pipe 330, drives the end cover 340 to open the discharge port of the screw pipe 330, and the screw 320 sends out the powder. Or the screw 320 drives the end cover 340 to close the discharge port of the screw pipe 330, so as to avoid the powder from spilling. It should be noted that the second tooth part 232 is a bevel gear, and the output gear 230 and the connecting shaft 310 are driven through the bevel gear.

[0037] Specifically, referring to FIG. 2 and FIG. 4, the screw 320 is provided with the guide column 321 in the radial direction, the sidewall of the connecting shaft 310 is provided with the guide hole 311 matched with the guide column 321, the guide column 321 is inserted and matched with the guide hole 311, and the guide hole 311 extends spirally along the axial direction of the connecting shaft 310. When the output gear 230 rotates to drive the connecting shaft 310 to rotate, the screw 320 is blocked from rotating due to the powder filled in the screw pipe 330. At this time, the guide column 321 moves along the guide hole 311, so that the screw 320 moves along the axial direction of the screw pipe 330, and the end cover 340 opens the discharge port of the screw pipe 330. Then, the guide column 321 abuts against the sidewall of the guide hole 311, so as to drive the screw 320 to convey the powder. After the powder conveying is completed, the connecting shaft 310 is reversely rotated, so that the guide column 321 drives the screw 320 to be recovered into the screw pipe 330, the end cover 340 closes the discharge port of the screw pipe 330, and the opening and closing of the screw pipe 330 are realized.

[0038] The above describes the embodiments of the application in detail in combination with the drawings, but the application is not limited to the above embodiments. Within the scope of the knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the application.

Claims

1. Powder delivery device, characterized in that, The utility model relates to a powder feeding device, which comprises a powder bin, a stirring paddle, a screw pipe, a screw rod assembly, a motor, a first transmission gear, an output gear, a control device and a control assembly. The utility model relates to a powder feeding device, which comprises a powder bin, a stirring paddle, a screw pipe, a screw rod assembly, a motor, a first transmission gear, an output gear, a control device and a control assembly. The control assembly comprises a Hall sensor and a plurality of magnets, the plurality of magnets are arranged on the first transmission gear, the plurality of magnets are arranged at equal intervals in the circumferential direction, and the Hall sensor is used for sensing the magnets. The output gear comprises a first tooth portion and a second tooth portion, the first tooth portion drives the stirring paddle to rotate, and the second tooth portion drives the screw rod assembly to move.

2. The powder delivery device of claim 1, wherein, The lower end of the powder bin is rotatably provided with a transmission pipe, the transmission pipe is in communication with the screw rod, the outer side of the transmission pipe is provided with a third tooth portion which is engaged with the first tooth portion, and the transmission pipe is clamped with the stirring paddle.

3. The powder delivery device of claim 2, wherein, The stirring paddle comprises a first connecting block and a plurality of stirring blocks, the plurality of stirring blocks are arranged in the circumferential direction on the first connecting block, the plurality of stirring blocks are arranged at intervals, the first connecting block is clamped with the transmission pipe.

4. The powder delivery device of claim 1, wherein, The first connecting block is hollow, the first connecting block is in the form of a square as a whole, the transmission pipe is provided with a second connecting block, the second connecting block is provided with a plug-in hole which is matched with the first connecting block, and the first connecting block is plug-in matched with the plug-in hole.

5. The powder delivery device of claim 4, wherein, The screw rod assembly comprises a connecting shaft and a screw rod, one end of the screw rod is sleeved with the connecting shaft, the other end of the screw rod is provided with an end cover, the output gear drives the screw rod to move through the connecting shaft, so that the end cover opens or closes the discharge port of the screw pipe.

6. The powder delivery device of claim 5, wherein, The screw rod is provided with a guide column in the radial direction, the side wall of the connecting shaft is provided with a guide hole which is matched with the guide column, the guide column is plug-in matched with the guide hole, and the guide hole spirally extends along the axial direction of the connecting shaft.

7. The powder delivery device of claim 6, wherein, ​ 8. The powder delivery device of claim 6, wherein, ​ 9. The powder delivery device of claim 1, wherein, ​ 10. The powder delivery device of claim 9, wherein, ​

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