A western medicine screening device

Abstract

The present invention relates to the field of drug screening technology, specifically, a device for screening western medicine. It includes a screening disc, the screening disc is connected to a screening motor, the axis of the screening disc is connected to a feed hopper, the interior of the screening disc is provided with a plurality of screening channels, the screening channels are arranged horizontally, a flip section is arranged in the middle of the screening channel, when the medicine passes through the flip section, the top of the medicine flips to the bottom of the medicine; the screening shell includes an annular screening ring, the screening ring is arranged on the outside of the screening disc, the upper part of the screening shell is provided with a screening port, when the screening port is arranged relative to the screening channel, the medicine can pass through the screening port and be discharged outward. Qualified medicines can be screened through the screening port, and unqualified medicines are blocked inside the screening shell, so as to achieve efficient screening of unqualified medicines.

Description

Technical Field

[0001] The invention relates to the technical field of drug screening, in particular to a device for screening western medicines. Background Art

[0002] Western medicines usually refer to pharmaceutical preparations made by chemical synthesis or extracted from natural products. These medicines have clear ingredients and clear mechanisms of action and are an indispensable part of modern medicine. Tablets are a common dosage form of Western medicines.

[0003] During the tablet compression process, irregular tablets such as missing pieces and bulges may appear. Before packaging Western medicines, such irregular tablets need to be screened to remove unqualified tablets.

[0004] For example, Chinese patent publication number CN216631494U discloses a western medicine screening device, which includes a driving member and a screening frame. Two symmetrically distributed semicircular screening plates are detachably provided on the inner side of the screening frame. Both ends of the semicircular screening plates are fixedly connected to connecting seats. A movable slide is slidably provided on the inner side of the connecting seat. A connector is provided on one side of the connecting seat for mounting the semicircular screening plates on the inner side of the screening frame for positioning. The positioning seat is released by pulling the T-shaped positioning pin out of the inner side of the positioning pin, and the semicircular screening plates can be separated and disassembled in sequence by simply pulling the movable slide out of the inner side of the screening frame.

[0005] This application uses a semicircular screening plate to screen medicines, which can effectively screen out broken medicines, powdered medicines, etc. whose volumes are significantly smaller than qualified medicines. However, it is unable to effectively screen missing medicines whose volumes are not much different from those of qualified medicines, or convex medicines whose volumes are larger than those of qualified medicines.

[0006] In response to the above problems, the present application provides a western medicine screening device to screen out unqualified medicines and ensure the qualified rate of finished western medicines. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a device for screening western medicines.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a western medicine screening device, comprising a screening disk, the screening disk is connected to a screening motor, the axis of the screening disk is connected to a feed hopper, a plurality of screening channels are arranged inside the screening disk, the screening channels are arranged horizontally, a flip section is arranged in the middle of the screening channel, and when the medicine passes through the flip section, the top of the medicine flips to the bottom of the medicine;

[0009] The screening shell comprises an annular screening ring, which is arranged on the outside of the screening disk. A screening port is arranged on the upper part of the screening shell. When the screening port is arranged opposite to the screening channel, the medicine can be discharged outward through the screening port.

[0010] As an optimization, a lower material layer is provided inside the screening plate, and the lower material layer is connected with the ends of several screening channels. The distance between the lower end of the feed hopper and the bottom surface of the lower material layer is greater than the thickness of the medicine and less than the width of the medicine.

[0011] As an optimization, the bottom of the feed hopper is provided with guide frames having the same number as the screening channels, and the outer ends of the guide frames are arranged inside the ends of the screening channels;

[0012] The width of the guide frame is not less than the width of the medicine, and the outer end of the guide frame is rotatably connected to a control plate. An electromagnet is arranged on the inner side of the end of the screening channel, and the electromagnet and the control plate are arranged opposite to each other. A spring shaft is connected between the control plate and the guide frame. Under the action of the spring shaft, the distance between the outer end of the control plate and the outer end of the guide frame is less than the width of the medicine. When the electromagnet is energized, the control plate rotates outward, so that the medicine can enter the screening channel through the control plate.

[0013] As an optimization, the screening motor is fixedly connected to the bottom of the screening housing, and the screening motor and the screening housing are coaxially arranged.

[0014] As an optimization, the length direction of the screening channel is set along the radius of the screening plate, the two ends of the flip section are flipped 180°, both ends of the flip section are set horizontally, and there is a smooth transition between the flip section and the screening channel.

[0015] As an optimization, a material receiving box is arranged on the outer side of the screening port, a buffer pad is arranged on the side of the material receiving box opposite to the screening port, and a guide slope is connected to the lower side of the buffer pad.

[0016] As an optimization, the width of the screening port is greater than one times the width of the medicine and less than two times the width of the medicine.

[0017] As an optimization, the reagent enters the screening channel through the feed hopper, and moves outward along the screening channel under the action of centrifugal force. The complete reagent is thrown out from the screening channel and passes through the screening port.

[0018] This scheme provides a western medicine screening device, which has the following benefits:

[0019] The present application drives the medicine to rotate by the screening disk, and drives the medicine to rotate by the screening disk, so that the medicine moves outward along the screening channel. When there are missing pieces or bulges in the medicine, the weight of the unqualified medicine is different from that of the qualified medicine, and the flatness of its surface is also different from that of the qualified medicine. Therefore, the friction and centrifugal force experienced by the unqualified medicine are different from those of the qualified medicine, so that the qualified medicine can pass through the screening port to be screened, and the unqualified medicine is blocked inside the screening shell, thereby realizing efficient screening of the unqualified medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an axial schematic diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the bottom axial side of the present invention.

[0022] Figure 3 It is a main schematic diagram of the present invention.

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the AA section structure.

[0024] Figure 5 This is a schematic diagram of the position structure of the screening disk and the screening ring of the present invention.

[0025] Figure 6 This is an axial schematic diagram of the connection structure between the screening plate and the feed hopper of the present invention.

[0026] Figure 7 It is a schematic diagram of the axial side of the feed hopper of the present invention.

[0027] Figure 8 It is a schematic diagram of the axial side of the bottom of the feed hopper of the present invention.

[0028] Fig. 9 It is a top view schematic diagram of the screening disk of the present invention.

[0029] Fig.10 It is a schematic diagram of the screening disk axis side of the present invention.

[0030] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure of part B.

[0031] Fig.12 This is an axial schematic diagram of the screening channel of the present invention.

[0032] Fig.13 This is an axial schematic diagram of the screening channel of the present invention.

[0033] Among them, 1. screening plate, 2. screening motor, 3. feeding hopper, 4. screening channel, 5. turning section, 6. screening circle, 7. screening port, 8. unloading layer, 9. guide frame, 10. control plate, 11. electromagnet, 12. receiving box, 13. buffer pad. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] like Figure 1-Figure 12 As shown, a western medicine screening device comprises a screening disc 1, the screening disc 1 is connected to a screening motor 2, a feed hopper 3 is connected to the axis of the screening disc 1, a plurality of screening channels 4 are arranged inside the screening disc 1, the screening channels 4 are arranged horizontally, a flip section 5 is arranged in the middle of the screening channel 4, and when the medicine passes through the flip section 5, the top of the medicine flips to the bottom of the medicine;

[0036] The screening shell comprises an annular screening ring 6, which is arranged on the outside of the screening disk 1. A screening port 7 is arranged on the upper part of the screening shell. When the screening port 7 is arranged opposite to the screening channel 4, the medicine can be discharged outward through the screening port 7.

[0037] According to the size of the screening disc 1 and the medicine, a suitable number of screening channels 4 can be set. Figure 1-4 As shown, six screening channels 4 are arranged in the screening disk 1 , and the outer ends of the screening channels 4 are all connected with the outer side surface of the screening disk 1 .

[0038] During the rotation of the screening disc 1, the medicine is thrown outward through the screening channel 4. When the screening channel 4 is aligned with the screening port 7, the medicine can be thrown outward through the screening port 7. According to the size and quality of the medicine, the rotation speed of the screening disc 1 is set so that the complete medicine can be thrown out when the screening channel 4 is aligned with the screening port 7.

[0039] A hollow structure may be provided at the bottom of the screening shell so that unqualified medicines can be discharged downwards.

[0040] The missing or protruding medicine has different qualities, and the centrifugal force and friction force it receives are also different from those of the complete medicine. At the same speed, the protruding medicine will be thrown out earlier, while the missing medicine will be thrown out later. No matter it is earlier or later, it cannot pass through the screening port 7 smoothly.

[0041] like Figure 4 As shown, a lower material layer 8 is provided inside the screening plate 1, and the lower material layer 8 is connected with the ends of several screening channels 4, and the distance between the lower end of the feed hopper 3 and the bottom surface of the lower material layer 8 is greater than the thickness of the medicine and less than the width of the medicine.

[0042] The height of the lower material layer 8 is set so that the medicine can only be spread flat in the lower material layer 8. The feed hopper 3 is vertically set on the axis of the screening disk 1. The feed hopper 3 can be fixedly connected to the screening disk 1 or detachably connected. The rotation of the screening disk 1 does not affect the stability of the feed hopper 3.

[0043] like Figure 4 , Figure 8 and Fig.11 As shown, the bottom of the feed hopper 3 is provided with guide frames 9 having the same number as the screening channels 4, and the outer ends of the guide frames 9 are arranged inside the ends of the screening channels 4;

[0044] The width of the guide frame 9 is not less than the width of the medicine. The outer end of the guide frame 9 is rotatably connected to a control plate 10. An electromagnet 11 is provided on the inner side of the end of the screening channel 4. The electromagnet 11 is arranged opposite to the control plate 10. A spring shaft is connected between the control plate 10 and the guide frame 9. Under the action of the spring shaft, the distance between the outer end of the control plate 10 and the outer end of the guide frame 9 is less than the width of the medicine. When the electromagnet 11 is energized, the control plate 10 rotates outward, so that the medicine can enter the screening channel 4 through the control plate 10.

[0045] The setting of the guide frame 9 forms guide channels on the lower side of the lower hopper, the number of which is equal to the screening channels 4, so that the medicine passes through the feed hopper 3 and the guide channels and then enters the screening channels 4.

[0046] The control plate 10 is arranged at the outer end of the guide channel. Under the action of the spring shaft, the control plate 10 rotates toward the inner side of the guide channel, so that the medicine cannot flow out of the guide channel. When the electromagnet 11 is energized, the control plate 10 opens outwards, so that the medicine can be released into the screening channel 4.

[0047] like Figure 4 As shown, the screening motor 2 is fixedly connected to the bottom of the screening shell, and the screening motor 2 is coaxially arranged with the screening shell.

[0048] The screening motor 2 is used to drive the screening disc 1 to rotate. In order to ensure the stable rotation of the screening disc 1, a limiting support structure can also be set inside the screening shell so that the screening disc 1 can move relative to the limiting support structure to ensure the stable operation of the screening disc 1.

[0049] like Figure 4 , Fig.12 Shown and Fig.13 As shown, the length direction of the screening channel 4 is arranged along the radius of the screening plate 1, the two ends of the flip section 5 are flipped 180°, the two ends of the flip section 5 are arranged horizontally, and the flip section 5 and the screening channel 4 have a smooth transition.

[0050] like Fig.13 As shown, during the screening process, the medicine will move along one side and the bottom of the screening channel 4. When the medicine passes through the flipping section 5, the top of the medicine flips over to become the bottom and continues to contact the bottom of the screening channel 4.

[0051] When the medicine is complete, its side and bottom surfaces can be evenly fitted with the bottom surface of the screening channel 4, and the friction force on the medicine is even and stable. When the medicine is missing or convex, its top, bottom or side surfaces cannot be evenly and stably contacted with the bottom surface of the screening channel 4, affecting the friction force between the medicine and the screening channel 4. Therefore, the flip section 5 is provided to adjust the posture of the medicine and the contact surface between the medicine and the screening channel 4 to avoid excessive or too small friction force on the medicine.

[0052] like Figure 1 and Figure 4 As shown, a material receiving box 12 is arranged outside the screening port 7, a buffer pad 13 is arranged on the side of the material receiving box 12 opposite to the screening port 7, and a guide slope is connected to the lower side of the buffer pad 13.

[0053] When the medicine moves outward, it is thrown onto the buffer pad 13 and guided downward by the guide slope. The guide slope and the buffer pad 13 can be made of soft materials such as sponge to avoid damage to the medicine.

[0054] The width of the screening port 7 is greater than one times the width of the medicine and less than two times the width of the medicine.

[0055] The screening port 7 can accommodate one medicine to pass outward, and it is necessary to prevent the medicine thrown out earlier or later from passing through the screening port 7 .

[0056] like Figure 4 As shown, the medicine enters the screening channel 4 through the feed hopper 3 , and moves outward along the screening channel 4 under the action of centrifugal force. The complete medicine is thrown out from the screening channel 4 and passes through the screening port 7 .

[0057] The screening channels 4 are distributed along the radial direction of the screening disk 1 , so that the medicine can move outward along the screening channels 4 under the action of centrifugal force.

[0058] Directions:

[0059] When the device is used, the screening motor 2 drives the screening disc 1 to rotate;

[0060] Add the medicine into the feed hopper 3, and the medicine enters the lower material layer 8 through the feed hopper 3;

[0061] The medicine is evenly distributed in the multiple guide channels, and the electromagnet 11 is intermittently energized and de-energized, so that the medicine can be released into the screening channel 4 at intervals;

[0062] When the medicine is missing or convex, the smoothness of the contact surface between the medicine and the screening channel 4 is different, which affects the movement speed of the medicine in the screening channel 4. In order to reduce the influence of the integrity of the medicine surface on the movement speed of the medicine, the screening channel 4 is provided with a flip section 5, so that the medicine can adjust its posture inside the screening channel 4; in this process, the contact surface between the medicine and the screening channel 4 can be adjusted, reducing the influence of the surface condition of the medicine on the accuracy of medicine screening.

[0063] The reagent has a certain angular velocity ω inside the screening channel 4, and is subjected to centrifugal force Fc and friction force F;

[0064] Fc=mrω 2 ;

[0065] F = μN = μmg;

[0066] Where m is the mass of the reagent, r is the radius of the screening disc 1, and μ is the friction coefficient;

[0067] The centrifugal force on the medicine during its movement is greater than the friction force, so the medicine can smoothly pass through the screening channel 4 to the outside; the greater the mass of the medicine, the greater the friction force and centrifugal force on the medicine inside the screening channel 4. By adjusting the material of the inner wall of the screening channel 4, the friction coefficient of the screening channel 4 can be reduced;

[0068] At the same time, rω 2 >μg, ​​when the mass of the medicine increases, the increase in the centrifugal force on the medicine is greater than the increase in the friction force; when the mass of the medicine decreases, the decrease in the centrifugal force on the medicine is greater than the decrease in the friction force;

[0069] Therefore, when the medicine is missing a block, the mass of the medicine is less than that of the complete medicine, the centrifugal force on the medicine is reduced, and the movement speed of the medicine in the screening channel 4 is reduced. Compared with the complete medicine, the movement time in the screening channel 4 is longer and it is discharged from the outside of the screening channel 4 later;

[0070] When the medicine bulges, the movement speed of the medicine in the screening channel 4 increases. Compared with a complete medicine, the movement time in the screening channel 4 is shorter and the medicine will be discharged from the screening channel 4 earlier.

[0071] When the medicine is a complete medicine, the movement time of the medicine inside the screening channel 4 is t1, that is, the time from the release of the medicine to the discharge of the medicine from the screening channel 4 is t1; the angle between two adjacent screening channels 4 is α, that is, the time taken for the screening disk 1 to rotate α is also t1;

[0072] Therefore, when the complete medicine passes through the screening channel 4, the outer end of the screening channel 4 is opposite to the screening port 7, and the complete medicine can enter the receiving box 12 through the screening port 7, while the bulged medicine will be thrown out from the inside of the screening channel 4 earlier, and the missing medicine will be thrown out from the screening channel 4 later. Both the bulged medicine and the missing medicine will hit the inner side of the screening circle 6 and cannot be thrown out from the screening port 7.

[0073] The above structure can efficiently screen missing or protruding medicines to ensure the qualified rate of finished western medicines. Specifically, the material selection of the screening channel 4 and the size setting of the device are reasonably adjusted and set according to the size and quality of the actual medicines to be screened, and the details are not repeated here.

[0074] The above-mentioned specific embodiments are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific embodiments. Any western medicine screening device that complies with the claims of the present invention and any appropriate changes or modifications made thereto by ordinary technicians in the corresponding technical field shall fall within the patent protection scope of the present invention.

Claims

1. A western medicine screening device, characterized in that: The invention comprises a screening disc (1), the screening disc (1) is connected to a screening motor (2), the axis of the screening disc (1) is connected to a feed hopper (3), a plurality of screening channels (4) are arranged inside the screening disc (1), the screening channels (4) are arranged horizontally, a turning section (5) is arranged in the middle of the screening channel (4), and when the medicine passes through the turning section (5), the top of the medicine turns to the bottom of the medicine; A screening housing, comprising an annular screening ring (6), the screening ring (6) being arranged on the outside of the screening plate (1), and a screening port (7) being arranged on the upper part of the screening housing, and when the screening port (7) is arranged opposite to the screening channel (4), the medicine can pass through the screening port (7) and be discharged outward; The bottom of the feed hopper (3) is provided with guide frames (9) having the same number as the screening channels (4), and the outer ends of the guide frames (9) are arranged on the inner side of the ends of the screening channels (4); The width of the guide frame (9) is not less than the width of the medicine. The outer end of the guide frame (9) is rotatably connected to a control plate (10). An electromagnet (11) is arranged inside the end of the screening channel (4). The electromagnet (11) and the control plate (10) are arranged opposite to each other. A spring shaft is connected between the control plate (10) and the guide frame (9). Under the action of the spring shaft, the distance between the outer end of the control plate (10) and the outer end of the guide frame (9) is less than the width of the medicine. When the electromagnet (11) is energized, the control plate (10) rotates outward, so that the medicine can pass through the control plate (10) and enter the screening channel (4).

2. A western medicine screening device according to claim 1, characterized in that: A lower material layer (8) is provided inside the screening plate (1), and the lower material layer (8) is connected to the ends of a plurality of the screening channels (4). The distance between the lower end of the feed hopper (3) and the bottom surface of the lower material layer (8) is greater than the thickness of the medicine and less than the width of the medicine.

3. A western medicine screening device according to claim 1, characterized in that: The screening motor (2) is fixedly connected to the bottom of the screening shell, and the screening motor (2) and the screening shell are coaxially arranged.

4. A western medicine screening device according to claim 1, characterized in that: The length direction of the screening channel (4) is arranged along the radius of the screening disc (1), the two ends of the flip section (5) are flipped 180 degrees, the two ends of the flip section (5) are arranged horizontally, and there is a smooth transition between the flip section (5) and the screening channel (4).

5. A western medicine screening device according to claim 1, characterized in that: A material receiving box (12) is arranged outside the screening port (7), a buffer pad (13) is arranged on the side of the material receiving box (12) opposite to the screening port (7), and a guide slope is connected to the lower side of the buffer pad (13).

6. A western medicine screening device according to claim 1, characterized in that: The width of the screening port (7) is greater than one times the width of the medicine and less than two times the width of the medicine.

7. A western medicine screening device according to any one of claims 1 to 6, characterized in that: The medicine enters the screening channel (4) through the feed hopper (3), and moves outward along the screening channel (4) under the action of centrifugal force. The complete medicine is thrown out from the screening channel (4) and passes through the screening port (7).

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