Device for controlling visible foreign matters in powder split charging

Abstract

The utility model relates to the technical field of powder subpackaging machines, in particular to a device for controlling visible foreign matters in powder subpackaging, which comprises a mounting seat, a powder viewing cabin is arranged on the mounting seat, a powder feeding tee joint communicated with the powder viewing cabin is arranged on one side of the mounting seat, and a powder feeding screw is mounted in the powder feeding tee joint. A powder feeding screw guiding and positioning assembly is arranged at the end, away from the powder viewing cabin, of the powder feeding screw. The labyrinth assembly is fixedly connected with the powder feeding screw guiding and positioning block, the labyrinth assembly cannot rotate along with rotation of the powder feeding screw, in the reverse rotation process of the powder feeding screw, powder can be close to the transmission gear along with reverse rotation of the powder feeding screw, an outlet can be provided for the powder through the arrangement of the labyrinth assembly, the powder is moved out from the powder outlet, and the powder feeding efficiency is improved. And the influence of powder blockage on rotation of the powder feeding screw is avoided.

Description

Technical Field

[0001] This utility model relates to the field of powder dispensing machine technology, specifically to a device for controlling visible foreign matter during powder dispensing. Background Technology

[0002] The original powder filling machine consisted of a powder feeding tee, a powder feeding screw, a filling screw, a viewing chamber, a powder hopper, a powder nozzle, a stirrer, an αβ valve, a servo system, and a detection switch. When the product bag or vial arrived at the filling station, the detection switch detected the product bag or vial and sent a signal to the PLC. The PLC then sent a signal to the servo control system, and the servo motor drove the filling screw to fill the product bag or vial. During the filling process, the stirrer in the viewing chamber ran continuously to ensure the fluffiness of the raw material in the viewing chamber. When the servo motor reached the set value, it stopped running, and the filling was completed. When the number of fillings reached the set value, the powder feeding motor drove the powder feeding screw to replenish the viewing chamber. During the entire cycle, uncontrollable factors caused friction between the components, resulting in visible foreign matter, which seriously affected product quality and made it difficult to reliably guarantee patient medication safety.

[0003] Some powder filling machines use a powder feeding screw in the powder feeding mechanism, driven by a motor, to send the raw material powder from the raw material tank through an αβ valve into the powder viewing chamber. In the powder viewing chamber, a stirrer continuously and evenly mixes the raw material powder fed by the powder feeding mechanism. The filling screw rotates under the drive of a servo motor according to preset pulse parameters, filling the raw material powder into product bags or vials. This type of filling mechanism has the characteristics of simple structure and high efficiency, but it has poor foreign object control during operation. Foreign objects generated by friction between components cannot be effectively and timely defended against, which brings significant quality risks to the product. Specifically, when powder is transported by a horizontally positioned powder feeding screw, backflow of powder may occur within the screw. This backflowing powder may flow towards the transmission gears that drive the screw, causing blockage. The blocked powder may affect the rotation of the screw, leading to damage and the generation of visible foreign matter. This visible foreign matter can easily contaminate the powder, affecting the quality of the produced product. Therefore, powder dispensing machines urgently need a device to effectively control visible foreign matter during the dispensing process to solve the current problem of visible foreign matter. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a device for controlling visible foreign matter in powder dispensing. This device solves the problem that in the prior art, when powder is transported by a horizontally arranged powder feeding screw, powder may flow back into the screw. The backflowing powder may flow towards the transmission gear that drives the powder feeding screw, causing blockage. The blocked powder may affect the rotation of the powder feeding screw, causing damage to the screw and generating visible foreign matter. This visible foreign matter can easily contaminate the powder and affect the quality of the produced product.

[0005] A device for controlling visible foreign matter in powder dispensing includes a mounting base, a powder viewing chamber on the mounting base, a powder feeding tee communicating with the powder viewing chamber on one side of the mounting base, a powder feeding screw installed in the powder feeding tee, and a powder feeding screw guide and positioning assembly provided at the end of the powder feeding screw away from the powder viewing chamber.

[0006] The powder feeding screw guide and positioning assembly includes a powder feeding screw guide and positioning block connected to the mounting base. A rotating connector is provided on the side of the powder feeding screw guide and positioning block away from the toner compartment, which is rotatably connected to the powder feeding screw guide and positioning block. The inner side of the rotating connector is connected to the powder feeding screw, and the outer side of the rotating connector is connected to the transmission gear. A labyrinth assembly is provided on the side of the powder feeding screw guide and positioning block near the toner compartment, which is sleeved on the powder feeding screw. A toner outlet is provided at the bottom of the labyrinth assembly.

[0007] Furthermore, the maze components include a first maze, a second maze, and a third maze;

[0008] One end of the first labyrinth is fixedly connected to the guide block of the powder feeding screw, and the other end is fixedly connected to the second labyrinth. A third labyrinth is inserted into the end of the second labyrinth near the toner chamber. The end of the third labyrinth away from the second labyrinth is connected to the end of the powder feeding tee near the third labyrinth. The bottom of the third labyrinth is provided with the powder outlet, and the outer diameter of the third labyrinth is adapted to the end of the powder feeding tee near the third labyrinth.

[0009] Furthermore, a powder outlet hole is provided at the bottom of the powder feeding tee corresponding to the powder outlet.

[0010] Furthermore, the inner diameter of the second maze near the end of the third maze is adapted to the outer diameter of the third maze, and a step is provided in the second maze to abut against the end of the third maze.

[0011] Furthermore, an installation compartment is provided on the upper side of the toner chamber, and a drive shaft is provided inside the installation compartment. The bottom end of the drive shaft is connected to a stirrer and a dispensing screw located inside the toner chamber.

[0012] Furthermore, a powder hopper is provided at the bottom of the powder chamber, and a powder outlet is provided at the bottom of the powder hopper.

[0013] Furthermore, a powder tank connected to the powder feeding tee is provided at the top of the powder feeding tee.

[0014] Beneficial effects: The labyrinth assembly is fixedly connected to the powder feeding screw guide positioning block. The labyrinth assembly will not rotate with the rotation of the powder feeding screw. During the reverse rotation of the powder feeding screw, the powder will move closer to the transmission gear. The labyrinth assembly can provide an outlet for the powder, allowing the powder to move out from the outlet and avoiding powder blockage that may affect the rotation of the powder feeding screw. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the stirrer installation in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the powder feeding screw guide and positioning assembly in an embodiment of this utility model. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the structure of the powder feeding screw guide and positioning assembly in an embodiment of this utility model. Figure 2 ;

[0021] Figure 6 This is a schematic diagram of the first maze structure in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the second maze structure in an embodiment of this utility model;

[0023] Figure 8 This is a schematic diagram of the third maze structure in an embodiment of this utility model;

[0024] Figure 9 This is a schematic diagram of the rotating connector structure in an embodiment of this utility model.

[0025] In the diagram: 1. Mounting base; 101. Toner viewing chamber; 1011. Observation window; 102. Mounting chamber; 2. Transmission gear; 301. Toner feeding screw guide positioning block; 302. First labyrinth; 303. Second labyrinth; 304. Third labyrinth; 3041. Toner outlet; 305. Rotating connector; 4. Toner feeding tee; 6. Drive shaft; 7. Agitator; 8. Toner tank; 9. Toner hopper; 10. Toner outlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] It should be noted that the embodiments and features involved in the embodiments of this utility model can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] like Figures 1-7 The device shown is for controlling visible foreign matter in powder dispensing. It includes a mounting base 1, a powder viewing chamber 101 on the mounting base 1, and a powder feeding tee 4 communicating with the powder viewing chamber 101 on one side of the mounting base 1. A powder feeding screw is installed inside the powder feeding tee 4, and the end of the powder feeding screw away from the powder viewing chamber 101 is connected to the mounting base 1 through a powder feeding screw guide and positioning assembly. A transmission gear 2 for driving the powder feeding screw to rotate is connected to the powder feeding screw positioning assembly.

[0029] The powder feeding screw guide and positioning assembly includes a powder feeding screw guide and positioning block 301 mounted on the mounting base 1. A rotating connector 305 is rotatably connected to the side of the powder feeding screw guide and positioning block 301 away from the toner chamber 101. The inner side of the rotating connector 305 is connected to the end of the powder feeding screw, and a transmission gear 2 is connected to the outer side of the rotating connector 305. A labyrinth assembly is fixedly connected to the side of the powder feeding screw guide and positioning block 301 near the toner chamber 101. The labyrinth assembly is sleeved on the powder feeding screw, and a toner outlet is provided at the bottom of the labyrinth assembly. A powder feeding tee 4 is sleeved on the outer side of the labyrinth assembly, and a toner outlet hole is provided at the bottom of the powder feeding tee 4 corresponding to the toner outlet. Specifically, the outer contour of the end of the powder feeding screw is approximately square, the inner contour of the rotating connector 305 is adapted to the end of the powder feeding screw, the outer contour of the end of the rotating connector 305 is approximately square, and the inner contour of the transmission gear 2 is adapted to the outer contour of the end of the rotating connector 305.

[0030] In this embodiment, the labyrinth assembly is fixedly connected to the powder feeding screw guide positioning block 301. The labyrinth assembly will not rotate with the rotation of the powder feeding screw. During the reverse rotation of the powder feeding screw, the powder will move closer to the transmission gear 2. The labyrinth assembly can provide an outlet for the powder, allowing the powder to move out from the outlet and avoiding powder blockage that could affect the rotation of the powder feeding screw.

[0031] The maze assembly includes a first maze 302, a second maze 303, and a third maze 304. One end of the first maze 302 is inserted into the powder feeding screw guide positioning block 301 and is fixedly connected to the powder feeding screw guide positioning block 301. The other end of the first maze 302 is fixedly connected to the second maze 303. The third maze 304 is inserted into the end of the second maze 303 opposite to the first maze 302. The third maze 304 is sleeved on the powder feeding screw. The end of the third maze 304 opposite to the second maze 303 is inserted into the powder feeding tee 4 and snapped onto the powder feeding tee 4. The outer diameter of the third maze 304 is adapted to the end of the powder feeding tee 4 near the third maze 304. The bottom of the third maze 304 has a powder outlet for powder to pass through. The inner diameter of the second maze 303 near the end of the third maze 304 is adapted to the outer diameter of the third maze 304, and a step is provided inside the second maze 303 to abut against the end of the third maze 304.

[0032] In this embodiment, the maze component has a simple structure that is easy to install and use, and the powder outlet on the third maze 304 is used to facilitate the movement of powder.

[0033] The powder feeding tee 4 is equipped with a powder tank 8 connected to the powder feeding tee 4 at its top.

[0034] In this embodiment, conveying powder through the powder tank 8 is convenient, quick, and relatively clean.

[0035] The toner chamber 101 has a toner inlet on one side that is connected to the toner delivery tee 4, and an observation window 1011 on the other side away from the toner delivery tee 4.

[0036] In this embodiment, the observation window 1011 is provided for observing the internal conditions of the powder chamber 101.

[0037] An installation chamber 102 is provided on the upper side of the toner chamber 101. A drive shaft 6 is rotatably connected inside the installation chamber 102. The bottom end of the drive shaft 6 extends downward into the toner chamber 101 and is connected to a stirrer 7 and a dispensing screw installed inside the toner chamber 101. The stirrer 7 and the dispensing screw are existing technologies and will not be described in detail here. A powder hopper 9 is provided at the bottom of the toner chamber 101, and a powder outlet 10 is provided at the bottom of the powder hopper 9.

[0038] In this embodiment, the stirrer 7 is used to stir the powder in the powder chamber 101 to make the powder more fluffy, and the dispensing screw is used to dispense the powder in a quantitative manner. The powder leaves the powder chamber 101 through the powder outlet 10.

[0039] Working principle: In the existing technology, the drive device drives the transmission gear 2 to rotate, the transmission gear 2 drives the rotating connecting piece 305 to rotate, and the rotating connecting piece 305 drives the powder feeding screw to rotate; the powder in the powder tank 8 enters the powder feeding tee 4, the powder feeding screw feeds the powder through the powder inlet into the powder viewing chamber 101, the drive shaft 6 drives the agitator 7 to agitate the powder and the powder is distributed by the dispensing screw, and the powder leaves the powder viewing chamber 101 from the powder outlet 10;

[0040] After the powder flows back into the powder feeding tee 4, it will move downward through the powder outlet when passing through the third labyrinth 304, thus preventing the backflowing powder from moving towards the transmission gear 2 and affecting the rotation of the transmission gear 2.

[0041] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A device for dispensing powder and controlling visible foreign matter, characterized in that, The device includes a mounting base, on which a toner compartment is provided. A toner delivery tee is provided on one side of the mounting base and communicates with the toner compartment. A toner delivery screw is installed inside the toner delivery tee, and a toner delivery screw guide and positioning assembly is provided at the end of the toner delivery screw that is away from the toner compartment. The powder feeding screw guide and positioning assembly includes a powder feeding screw guide and positioning block connected to the mounting base. A rotating connector is provided on the side of the powder feeding screw guide and positioning block away from the toner compartment, which is rotatably connected to the powder feeding screw guide and positioning block. The inner side of the rotating connector is connected to the powder feeding screw, and the outer side of the rotating connector is connected to the transmission gear. A labyrinth assembly is provided on the side of the powder feeding screw guide and positioning block near the toner compartment, which is sleeved on the powder feeding screw. A toner outlet is provided at the bottom of the labyrinth assembly.

2. The device for controlling visible foreign matter in powder dispensing according to claim 1, characterized in that, The maze components include a first maze, a second maze, and a third maze; One end of the first labyrinth is fixedly connected to the guide block of the powder feeding screw, and the other end is fixedly connected to the second labyrinth. A third labyrinth is inserted into the end of the second labyrinth near the toner chamber. The end of the third labyrinth away from the second labyrinth is connected to the end of the powder feeding tee near the third labyrinth. The bottom of the third labyrinth is provided with the powder outlet, and the outer diameter of the third labyrinth is adapted to the end of the powder feeding tee near the third labyrinth.

3. The device for controlling visible foreign matter in powder dispensing according to claim 2, characterized in that, The powder feeding tee has a powder outlet hole at its bottom corresponding to the powder outlet.

4. The device for controlling visible foreign matter in powder dispensing according to claim 2, characterized in that, The inner diameter of the second maze near the end of the third maze is adapted to the outer diameter of the third maze, and a step is provided in the second maze to abut the end of the third maze.

5. The device for controlling visible foreign matter in powder dispensing according to claim 1, characterized in that, An installation compartment is provided on the upper side of the toner chamber, and a drive shaft is installed inside the installation compartment. The bottom end of the drive shaft is connected to a stirrer and a dispensing screw located inside the toner chamber.

6. The device for controlling visible foreign matter in powder dispensing according to claim 5, characterized in that, The bottom of the powder chamber is provided with a powder hopper, and the bottom of the powder hopper is provided with a powder outlet.

7. The device for controlling visible foreign matter in powder dispensing according to claim 1, characterized in that, The powder feeding tee is equipped with a powder tank at its top, which is connected to the powder feeding tee.

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