A medicine body weighing device
Patent Information
- Application Number
- CN202611255083.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-18
- Publication Date
- 2026-11-03
AI Technical Summary
Existing volumetric metering devices have problems such as insufficient filling of gunpowder, serious residue, low metering accuracy, and safety hazards in gunpowder metering. In addition, they lack an orderly conveying structure for the gunpowder, making it difficult to meet the precise requirements of subsequent filling processes.
The device employs a coaxial arrangement of push-push through-holes, discharge through-holes, and a rotating core, combined with a screw feeder and push-push assembly, to achieve active push-push of the drug, ensuring complete filling and quantitative accuracy. The drug dispensing assembly enables secondary directional delivery of the drug, adapting to the production cycle of the filling equipment.
It improves the accuracy and safety of drug quantification, reduces production safety hazards, and enhances production efficiency and applicability. It is suitable for weighing and conveying materials with poor flowability.
Smart Images
Figure CN123028477A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of drug quantitative feeding technology, specifically to a drug weighing device. Background Technology
[0002] In the production of gunpowder (including propellants, explosives, and other energetic materials), it is usually necessary to weigh the propellant according to a preset dosage so that it can be subsequently filled into cartridges, tubes, or other containers. The accuracy and efficiency of quantitative weighing are directly related to product quality and production safety.
[0003] Currently, volumetric metering technology is a common technique in the quantitative weighing of gunpowder and powder materials. Most existing volumetric metering devices rely on the material's own weight to fall from the hopper into the metering cavity, lacking active feeding and compaction mechanisms. For gunpowder materials, which often have poor flowability and unstable bulk density, gravity alone cannot guarantee complete filling of the metering cavity, easily leading to inconsistent gunpowder volume in each weighing, thus affecting metering accuracy. Meanwhile, existing volumetric metering devices typically rely on gravity to allow the material to be discharged naturally from the outlet after metering. However, due to the adhesiveness and residue properties of gunpowder materials, gravity alone is insufficient to completely and cleanly remove the gunpowder from the metering chamber, easily resulting in gunpowder residue within the chamber. This not only affects the accuracy of subsequent weighings but may also pose safety hazards. Furthermore, the outlet of existing volumetric metering devices is usually directly connected to the next process, lacking a structure for the orderly and controllable secondary directional transport of the metered gunpowder, making it difficult to meet the precise requirements of subsequent filling processes regarding the rhythm and position of gunpowder transport. Summary of the Invention
[0004] In view of the above, the purpose of this invention is to overcome the shortcomings of the prior art and provide a drug weighing device. This application provides the following technical solution: A drug weighing device includes a drug delivery mechanism, a metering mechanism, and a discharging mechanism. The metering mechanism includes a core seat and a rotating core. The core seat has a rotating cavity that rotates in conjunction with the rotating core. The rotating core has a weighing through hole arranged radially. The core seat has a feed through hole and a discharge through hole correspondingly arranged on it. When the rotating core rotates, the weighing through hole is coaxially connected to the feed through hole or coaxially connected to the discharge through hole. The drug delivery mechanism is connected to the feed through hole. The discharge mechanism includes a drug pushing component and a drug dispensing component. The core seat has a drug pushing through hole, which is coaxially arranged with the discharge through hole. When the weighing through hole is coaxially connected with the discharge through hole, the weighing through hole, the discharge through hole, and the drug pushing through hole are interconnected to form a pushing pipeline. The drug pushing component pushes the drug in the weighing through hole out along the pushing pipeline. The discharge through hole is vertically connected to the middle of the drug dispensing component, and the drug dispensing component pushes out the drug flowing out of the discharge through hole.
[0005] As a preferred or supplementary option to the aforementioned drug weighing equipment, the drug delivery mechanism includes a receiving chamber, a drug delivery tube, and a screw feeder. The two ends of the drug delivery tube are respectively connected to the receiving chamber and the feed through hole, and the screw feeder is disposed inside the drug delivery tube.
[0006] As a preferred or supplementary material weighing device, the drug pushing assembly includes a piston, a push rod, and a telescopic device. The piston is slidably and sealed within the pushing pipeline, and the push rod is connected to the piston and the telescopic device respectively.
[0007] As a preferred or supplementary material for the above-mentioned drug weighing equipment, the drug pushing assembly includes a gas source and an intermittent solenoid valve. The gas source is connected to the drug pushing through hole, and the intermittent solenoid valve controls the gas source to introduce gas into the drug pushing through hole.
[0008] As a preferred or supplementary option to the aforementioned drug weighing equipment, the drug dispensing assembly includes a drug dispensing tube and a drug dispensing actuator, wherein the discharge through hole is vertically connected to the middle of the drug dispensing tube, and the drug dispensing actuator is disposed inside the drug dispensing tube.
[0009] As a preferred or supplementary option to the aforementioned drug weighing equipment, the drug dispensing actuator includes a telescopic cylinder, which is disposed inside the drug dispensing tube.
[0010] As a preferred or supplementary device for weighing the aforementioned drug, the drug dispensing actuator includes a gas source and an intermittent solenoid valve. The gas source is connected to the drug dispensing pipe, and the intermittent solenoid valve controls the gas source to introduce gas into the drug dispensing pipe.
[0011] As a preferred or supplementary device for weighing the drug, a first tube is connected to the external of the drug pushing through hole, and a second tube is connected to the external of the discharge through hole. Both the first tube and the second tube are provided with flanges at their ends.
[0012] As a preferred or supplementary option to the aforementioned drug weighing equipment, a sealing ring is provided between the rotating core and the rotating cavity.
[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present invention is provided with a coaxially arranged drug pushing through hole and discharge through hole. After the rotating core is rotated into position, the weighing through hole, discharge through hole and drug pushing through hole are connected to form a pushing pipeline. The drug pushing component actively pushes the drug body. Unlike gravity discharge, it can completely push out the drug body that is adhered or retained in the weighing through hole, eliminating drug body residue. This ensures that the weighing accuracy of each batch is not affected by the previous batch of materials, and also avoids the accumulation of energetic drugs in the cavity, reducing production safety hazards.
[0014] 2. The present invention is equipped with a screw feeder, which is set inside the drug delivery tube and can actively and forcibly deliver the gunpowder from the receiving chamber to the weighing through hole. The screw pushing action can continuously and stably deliver the gunpowder into the weighing through hole and achieve compaction and filling, overcoming the defects of poor gunpowder flowability and unstable bulk density, ensuring that the gunpowder inside the weighing through hole is fully filled, and the volume of the gunpowder is highly consistent each time under volumetric weighing, and the weighing accuracy is significantly improved.
[0015] 3. The discharge through hole of this invention is vertically connected to the middle of the drug feeding component. After the drug enters the drug feeding tube, it is transported in a secondary direction by the drug feeding pusher. This decouples and buffers the quantitative process and the filling process, and allows for independent control of the drug output timing. It is compatible with the production rhythm of the downstream filling equipment, facilitates automated assembly line operation, and improves overall production efficiency.
[0016] 4. The various mechanisms of this invention are integrated around the core seat and rotating core. The rotating core is used to switch the work position, realizing the switching of feeding, quantitative and pushing / discharging functions. The overall structure is compact. At the same time, the pushing and discharging through holes are connected to the flanged pipes, which are convenient for disassembly and maintenance. A sealing ring is configured between the rotating core and the rotating cavity to ensure the cavity is sealed. The medicine is transported in the closed pipeline cavity, reducing dust and further improving the safety of handling flammable and explosive materials.
[0017] 5. This invention is not only applicable to the quantitative weighing of gunpowder-type energetic materials, but also to the weighing and conveying of materials with poor flowability and high metering accuracy requirements, such as pharmaceutical powders and fine chemical granules. It has a wide range of applications.
[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1This is a schematic diagram of the cross-sectional structure of the present invention from a frontal view. Figure 2 This is a side-view cross-sectional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention.
[0021] Reference numerals in the attached drawings: 1-Core seat; 2-Rotating core; 3-Rotating cavity; 4-Weighing through hole; 5-Feeding through hole; 6-Discharge through hole; 7-Pushing through hole; 8-Screw feeder; 9-Receiving bin; 10-Administration tube; 11-Discharge tube; 12-Telescopic cylinder; 13-Push plate; 14-Piston; 15-Push rod; 16-Telescopic device; 17-Sealing ring; 18-First tube body; 19-Second tube body. Detailed Implementation
[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0025] Please refer to Figure 1 As shown in Figure 3, this embodiment provides a drug weighing device, including a drug delivery mechanism, a quantitative mechanism, and a discharging mechanism. The quantitative mechanism includes a core seat 1 and a rotating core 2. The core seat 1 has a rotating cavity 3 that rotates in conjunction with the rotating core 2. The rotating core 2 has a weighing through hole 4 arranged radially. The core seat 1 has a feed through hole 5 and a discharge through hole 6. When the rotating core 2 rotates, the weighing through hole 4 is coaxially connected with the feed through hole 5 or coaxially connected with the discharge through hole 6. The drug delivery mechanism is connected to the feed through hole 5. The discharge mechanism includes a drug pushing component and a drug dispensing component. The core seat 1 has a drug pushing through hole 7, which is coaxially arranged with the discharge through hole 6. When the weighing through hole 4 and the discharge through hole 6 are coaxially connected, the weighing through hole 4, the discharge through hole 6 and the drug pushing through hole 7 are interconnected to form a pushing pipeline. The drug pushing component pushes the drug in the weighing through hole 4 out along the pushing pipeline. The discharge through hole 6 is vertically connected to the middle of the drug dispensing component, and the drug dispensing component pushes out the drug flowing out of the discharge through hole 6. The drug delivery mechanism includes a receiving chamber 9, a drug delivery tube 10, and a screw feeder 8. The two ends of the drug delivery tube 10 are respectively connected to the receiving chamber 9 and the feed through hole 5. The screw feeder 8 is disposed inside the drug delivery tube 10. The drug pushing assembly includes a piston 14, a push rod 15, and a telescopic device 16. The piston 14 is slidably disposed inside the pushing pipe, and the push rod 15 is connected to the piston 14 and the telescopic device 16. The drug dispensing assembly includes a drug dispensing tube 11 and a drug dispensing pusher. The discharge through hole 6 is perpendicularly connected to the middle of the drug dispensing tube 11, and the drug dispensing pusher is disposed inside the drug dispensing tube 11. The drug dispensing pusher includes a telescopic cylinder 12, which is disposed inside the drug dispensing tube 11. A sealing ring 17 is disposed between the rotating core 2 and the rotating cavity 3.
[0026] In the above embodiments, such as Figure 3 As shown, a drug weighing device of the present invention includes a drug delivery mechanism, a metering mechanism, and a dispensing mechanism. The metering mechanism includes a core seat 1 and a rotating core 2. A rotating cavity 3 is formed inside the core seat 1, and the rotating core 2 is rotatably assembled inside the rotating cavity 3. Figure 2 and Figure 3 As shown, a rotary drive assembly is configured at the end of the rotating core 2, which can consist of a stepper motor, a reducer, and a coupling. A sealing ring 17 is installed between the rotating core 2 and the rotating cavity 3 to achieve sealing at the rotational position and prevent leakage of the drug. A weighing through hole 4 is opened radially on the rotating core 2, which serves as a volumetric metering cavity. A feed through hole 5 and a discharge through hole 6 are opened on the core seat 1. When the rotating core 2 rotates, the weighing through hole 4 can be rotated to the feed position coaxially connected with the feed through hole 5, or it can be rotated to the discharge position coaxially connected with the discharge through hole 6.
[0027] like Figure 1 and Figure 2 As shown, the drug delivery mechanism includes a receiving chamber 9, a drug delivery tube 10, and a screw feeder 8. The two ends of the drug delivery tube 10 are connected to the receiving chamber 9 and the feed port 5, respectively. The screw feeder 8 is arranged inside the drug delivery tube 10, with its blades extending to the junction of the feed port 5 and the weighing port 4. During operation, the screw feeder 8 rotates, taking material from the receiving chamber 9 and actively pushing the drug into the weighing port 4, compacting and filling it completely. The fixed volume of the weighing port 4 ensures the quantitative dispensing of the drug.
[0028] The discharge mechanism includes a drug pushing component and a drug dispensing component; the core seat 1 has a drug pushing through hole 7, and the drug pushing through hole 7 and the discharge through hole 6 are arranged coaxially. When the rotating core 2 rotates to the discharge position, the weighing through hole 4, the discharge through hole 6, and the drug pushing through hole 7 are coaxially connected to form a pushing pipeline.
[0029] In this embodiment, the drug pushing assembly adopts a mechanical piston pushing structure, including a piston 14, a push rod 15, and a telescopic device 16. The piston 14 is sealed and slidably assembled in the pushing pipeline. One end of the push rod 15 is connected to the piston 14, and the other end is connected to the telescopic device 16. The telescopic device 16 drives the push rod 15 forward, which in turn drives the piston 14 to move along the pushing pipeline, pushing out the drug that has been quantitatively measured inside the weighing through hole 4 and sending it into the drug dispensing assembly.
[0030] The drug dispensing assembly includes a drug dispensing tube 11 and a drug dispensing pusher; the discharge through hole 6 is vertically connected to the middle of the drug dispensing tube 11. In this embodiment, the drug dispensing pusher is a telescopic cylinder 12, which is installed inside the drug dispensing tube 11. The output end of the telescopic cylinder 12 is equipped with a pusher plate 13. After the drug enters the drug dispensing tube 11 through the discharge through hole 6, the telescopic cylinder 12 moves, and the pusher plate 13 pushes the drug in the drug dispensing tube 11 laterally and transports it to the rear filling station.
[0031] In a preferred embodiment, the push-through hole 7 is externally connected to a first tube 18, and the discharge through hole 6 is externally connected to a second tube 19. Both the first tube 18 and the second tube 19 are provided with flanges at their ends.
[0032] In this preferred embodiment, the push hole 7 can be externally connected to the first pipe body 18, and the discharge hole 6 can be externally connected to the second pipe body 19; flanges are provided at the ends of the first pipe body 18 and the second pipe body 19 to facilitate pipeline disassembly, assembly, and maintenance.
[0033] When using this invention, the medicine to be weighed is stored in the receiving chamber 9, the rotating core 2 rotates, and the weighing through hole 4 is aligned with the feeding through hole 5; the screw feeder 8 is activated, forcibly pressing the medicine into the weighing through hole 4 until the weighing through hole 4 is compacted and filled with medicine; then the rotating core 2 rotates, driving the weighing through hole 4 filled with medicine to switch to the discharge position, and the weighing through hole 4 is simultaneously connected to the discharge through hole 6 and the pushing through hole 7; the telescopic device 16 drives the piston 14 to move forward, the piston 14 passes through the pushing through hole 7, and pushes out all the medicine inside the weighing through hole 4, and the medicine enters the medicine supply pipe 11 through the discharge through hole 6; the telescopic cylinder 12 is activated, pushing the medicine inside the medicine supply pipe 11 outward to supply the next filling process; after the discharge is completed, all components are reset and the next weighing cycle begins.
[0034] In a preferred embodiment, the drug delivery assembly includes a gas source and an intermittent solenoid valve. The gas source is connected to the drug delivery through-hole 7, and the intermittent solenoid valve controls the gas source to deliver gas into the drug delivery through-hole 7.
[0035] The preferred solution is generally consistent with the structure of the above embodiment, except that the pushing component adopts a pneumatic drive. Specifically, the pushing component includes an air source and an intermittent solenoid valve; the air source pipeline is connected to the pushing through hole 7, and the intermittent solenoid valve controls the on / off of the air source; when the weighing through hole 4 reaches the discharge station, the intermittent solenoid valve opens, and high-pressure gas is introduced into the pushing through hole 7, using the airflow to blow the medicine inside the weighing through hole 4 into the drug delivery pipe 11.
[0036] In a preferred embodiment, the drug delivery actuator includes a gas source and an intermittent solenoid valve. The gas source is connected to the drug delivery tube 11, and the intermittent solenoid valve controls the gas source to introduce gas into the drug delivery tube 11.
[0037] The preferred solution is generally consistent with the structure of the above embodiment, except that the drug delivery pusher adopts a pneumatic drive structure. Specifically, the drug delivery pusher includes an air source and an intermittent solenoid valve. The air source is connected to the drug delivery pipe 11, and the intermittent solenoid valve controls the gas to enter the drug delivery pipe 11. The compressed air flow is used to blow the drug inside the drug delivery pipe 11 outward to supply the downstream process.
[0038] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A drug weighing device, characterized in that: The device includes a drug delivery mechanism, a metering mechanism, and a dispensing mechanism. The metering mechanism includes a core seat and a rotating core. The core seat has a rotating cavity that rotates in conjunction with the rotating core. The rotating core has a weighing through hole arranged radially. The core seat has a corresponding feeding through hole and a dispensing through hole. When the rotating core rotates, the weighing through hole is coaxially connected to the feeding through hole or coaxially connected to the dispensing through hole. The drug delivery mechanism is connected to the feeding through hole. The discharge mechanism includes a drug pushing component and a drug dispensing component. The core seat has a drug pushing through hole, which is coaxially arranged with the discharge through hole. When the weighing through hole is coaxially connected with the discharge through hole, the weighing through hole, the discharge through hole, and the drug pushing through hole are interconnected to form a pushing pipeline. The drug pushing component pushes the drug in the weighing through hole out along the pushing pipeline. The discharge through hole is vertically connected to the middle of the drug dispensing component, and the drug dispensing component pushes out the drug flowing out of the discharge through hole.
2. The drug weighing device according to claim 1, characterized in that: The drug delivery mechanism includes a receiving chamber, a drug delivery tube, and a screw feeder. The two ends of the drug delivery tube are respectively connected to the receiving chamber and the feed through hole, and the screw feeder is disposed inside the drug delivery tube.
3. The drug weighing device according to claim 1, characterized in that: The drug delivery assembly includes a piston, a push rod, and a telescopic device. The piston is slidably and sealed within the delivery pipeline, and the push rod is connected to both the piston and the telescopic device.
4. The drug weighing device according to claim 1, characterized in that: The drug delivery assembly includes a gas source and an intermittent solenoid valve. The gas source is connected to the drug delivery through-hole, and the intermittent solenoid valve controls the gas source to supply gas to the drug delivery through-hole.
5. The drug weighing device according to claim 1, characterized in that: The drug dispensing assembly includes a drug dispensing tube and a drug dispensing actuator. The discharge through hole is vertically connected to the middle part of the drug dispensing tube, and the drug dispensing actuator is disposed inside the drug dispensing tube.
6. The drug weighing device according to claim 5, characterized in that: The drug dispensing actuator includes a telescopic cylinder, which is disposed inside the drug dispensing tube.
7. A drug weighing device according to claim 5, characterized in that: The drug delivery actuator includes a gas source and an intermittent solenoid valve. The gas source is connected to the drug delivery tube, and the intermittent solenoid valve controls the gas source to introduce gas into the drug delivery tube.
8. A drug weighing device according to claim 1, characterized in that: The pushing hole is connected to a first pipe, and the discharge hole is connected to a second pipe. Both the first pipe and the second pipe are provided with flanges at their ends.
9. A drug weighing device according to claim 1, characterized in that: A sealing ring is provided between the rotating core and the rotating cavity.