Medicinal glycerol filling device

Abstract

The utility model relates to the technical field of liquid medicine filling, in particular to a filling device for medicinal glycerol, which comprises a storage tank for storing glycerol raw materials with set pressure; the filling cylinder is connected to the discharging end of the storage tank, and a plurality of discharging nozzles are arranged on one side of the filling cylinder; the filling mandrel is installed in the filling cylinder, matched with the filling cylinder and capable of rotating along the axis of the filling mandrel and sealing a gap between the filling mandrel and the filling cylinder, a plurality of filling concave cavities are formed in one side of the filling mandrel, and the multiple filling concave cavities correspond to the multiple discharging nozzles one to one; the elastic energy storage mechanisms are mounted in the corresponding filling concave cavities; wherein in the state that the filling concave cavity right faces the feeding side of the filling cylinder, the glycerin raw material enters the filling concave cavity and compresses the elastic energy storage mechanism, and in the state that the filling concave cavity right faces the discharging nozzle, the elastic energy storage mechanism outputs the glycerin in the filling concave cavity from the corresponding discharging nozzle. According to the utility model, each medicine bottle can be filled with glycerol with a set dosage through a pure mechanical structure.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical liquid filling technology, specifically to a filling device for pharmaceutical glycerin. Background Technology

[0002] Glycerin, a pharmaceutical excipient, is a viscous liquid. The purity of pharmaceutical-grade glycerin is 95%, while that for injection is 98%. Since injectable formulations are directly injected into the human body, controlling the impurity content is crucial to their quality. However, the molecular structure of glycerin makes it easily oxidized by oxygen into various impurities, necessitating filling in an anaerobic environment. This anaerobic environment requires vacuuming before injecting protective gas, resulting in a long waiting time. Therefore, in production, a single-can filling system with multiple nozzles is used for simultaneous filling to improve efficiency. While this filling method improves efficiency, it requires metering each vial, involves numerous metering devices, complex dosage control, and relatively low metering reliability. This necessitates increasing the frequency and quantity of sampling inspections, leading to higher production costs. Utility Model Content

[0003] To address the technical problem of poor measurement reliability and the need for frequent sampling inspections during existing glycerin filling processes, this invention provides a filling device for pharmaceutical glycerin. This device uses a purely mechanical structure to fill each medicine bottle with a set dosage of glycerin, resulting in high measurement reliability and small deviation. It can reduce the frequency and number of sampling inspections of glycerin bottle dosages, thereby reducing production costs.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model provides a filling device for pharmaceutical glycerin, comprising: a storage tank for storing glycerin raw material at a set pressure; a filling cylinder connected to the discharge end of the storage tank, with multiple discharge nozzles on one side, the multiple discharge nozzles being spaced apart along the axial direction of the filling cylinder; a filling mandrel installed inside the filling cylinder, adapted to the filling cylinder, and capable of rotating along its own axis and sealing the gap between itself and the filling cylinder, with multiple filling cavities on one side, the multiple filling cavities corresponding one-to-one with the multiple discharge nozzles; and an elastic energy storage mechanism installed in the corresponding filling cavity; wherein, when the filling cavity is facing the feed side of the filling cylinder, the glycerin raw material enters the filling cavity and compresses the elastic energy storage mechanism; when the filling cavity is facing the discharge nozzle, the elastic energy storage mechanism outputs the glycerin in the filling cavity from the corresponding discharge nozzle.

[0006] The present invention provides a filling device for pharmaceutical glycerin, comprising a storage tank, a filling cylinder, a filling mandrel, and an elastic energy storage mechanism. The filling cylinder is connected to the discharge end of the storage tank and has multiple discharge nozzles on one side. The filling mandrel is installed inside the filling cylinder, capable of rotating along its own axis and sealing the gap between itself and the filling cylinder, and has multiple filling cavities on one side, each corresponding to a discharge nozzle. The elastic energy storage mechanism is installed in the corresponding filling cavity. In use, glycerin raw material is filled into the storage tank at a set pressure, and the medicine is conveyed to the lower part of the corresponding discharge nozzle. By rotating the filling mandrel, the filling cavity is aligned with the feed side of the filling cylinder. At this time, the glycerin raw material enters the filling cavity and compresses the elastic energy storage mechanism, allowing the filling cavity to accommodate a set volume of glycerin. Then, the filling mandrel is driven to rotate, causing the filling cavity to move to face the discharge nozzle. The elastic energy storage mechanism resets, thereby allowing the glycerin in the filling cavity to be output from the corresponding discharge nozzle and filled into the corresponding medicine bottle through the elastic energy storage mechanism.

[0007] Therefore, the pharmaceutical glycerin filling device provided by this utility model, through a purely mechanical structure, fills a set amount of glycerin into the medicine bottle. Compared with using a metering device to measure the dosage of glycerin, the measurement reliability is high and the deviation is small. It can reduce the frequency and number of sampling inspections of the dosage of glycerin medicine bottles, thereby reducing production costs.

[0008] In an optional embodiment of this application, a feeding groove is provided on one side of the inner wall of the filling cylinder. The bottom of the feeding groove is connected to the discharge end of the storage tank, and the feeding groove extends along the axial direction of the filling cylinder to ensure that the glycerin in the storage tank can smoothly enter the corresponding filling cavity.

[0009] In an optional embodiment of this application, a sealing sleeve is further included; the sealing sleeve is fixed inside the filling cylinder and sleeved outside the filling mandrel to seal the gap between the filling mandrel and the inner wall of the filling cylinder; the sealing sleeve is provided with a feed slit, the feed slit being directly opposite the feed groove of the filling cylinder; the sealing sleeve is also provided with a discharge boss, the discharge boss being embedded in the discharge nozzle, and a filling flow channel is provided in the middle of the discharge boss, the filling flow channel being able to connect to the corresponding filling cavity to ensure the sealing of the gap between the filling mandrel and the filling cylinder and to prevent glycerin raw material leakage.

[0010] In an optional embodiment of this application, the filling mandrel is made of polytetrafluoroethylene (PTFE) to utilize the self-lubricating properties of PTFE to reduce the resistance during rotation of the filling mandrel.

[0011] In an optional embodiment of this application, the sealing sleeve is made of fluororubber to ensure that the sealing sleeve has sufficient oil resistance and sufficient service life.

[0012] In an optional embodiment of this application, the filling cavity is a cylindrical hole structure, which facilitates the processing of the filling cavity and the setting of the elastic energy storage mechanism.

[0013] In an optional embodiment of this application, the elastic energy storage mechanism includes: a piston adapted to the cross-section of the filling cavity and capable of moving axially along the filling cavity; a sealing ring sleeved on the side wall of the piston for sealing the gap between the piston and the side wall of the filling cavity; and an energy storage spring installed between the bottom of the filling cavity and the piston to ensure that the elastic energy storage is compressed under the pressure of the glycerin raw material in the storage tank and that the glycerin is pushed out of the filling cavity when the filling cavity is facing the discharge nozzle.

[0014] In an optional embodiment of this application, a limiting part is provided at the opening end of the filling cavity. The limiting part is used to confine the piston within the filling cavity to prevent the piston from being pushed out of the filling cavity when the energy storage spring rebounds.

[0015] In an optional embodiment of this application, a filling motor is further included, which is connected to the filling mandrel to drive the filling mandrel to rotate.

[0016] In an optional embodiment of this application, the filling motor is a stepper motor to facilitate precise control of the rotation angle of the filling mandrel.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] The present invention provides a filling device for pharmaceutical glycerin, comprising a storage tank, a filling cylinder, a filling mandrel, and an elastic energy storage mechanism. The filling cylinder is connected to the outlet end of the storage tank and has multiple outlet nozzles on one side. The filling mandrel is installed inside the filling cylinder, capable of rotating along its own axis and sealing the gap between itself and the filling cylinder. It has multiple filling cavities on one side, each corresponding to one of the outlet nozzles. The elastic energy storage mechanism is installed in a corresponding filling cavity. The storage tank can store glycerin raw material at a set pressure. By rotating the filling mandrel, the filling cavities are aligned with the feed side of the filling cylinder. When the glycerin raw material enters the filling cavity and compresses the elastic energy storage mechanism, the filling cavity contains a set volume of glycerin. Then, the filling mandrel is driven to rotate, causing the filling cavity to move directly opposite the discharge nozzle. The elastic energy storage mechanism then resets, and the glycerin in the filling cavity is output from the corresponding discharge nozzle and poured into the corresponding medicine bottle through the elastic energy storage mechanism. This purely mechanical structure fills the medicine bottle with a set amount of glycerin. Compared with using metering devices to measure the dosage of glycerin, the measurement reliability is high and the deviation is small. It can reduce the frequency and number of sampling inspections of the dosage of glycerin medicine bottles, thereby reducing production costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] In the attached diagram:

[0021] Figure 1 A cross-sectional view of the filling apparatus for pharmaceutical glycerin provided in the embodiments of this application;

[0022] Figure 2 This is a schematic cross-sectional view of the filling cylinder provided in an embodiment of this application;

[0023] Figure 3 Examples of this application Figure 2 A magnified structural diagram of part A.

[0024] The attached figures include reference numerals and their corresponding component names:

[0025] 10-Storage tank, 20-Filling cylinder, 21-Discharge nozzle, 22-Feed trough, 30-Filling mandrel, 31-Filling cavity, 32-Limiting part, 40-Elastic energy storage mechanism, 41-Piston, 42-Sealing ring, 43-Energy storage spring, 50-Sealing sleeve, 51-Feeding slot, 52-Discharge boss. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0030] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Example

[0032] Combination Figure 1 and Figure 2 This embodiment provides a filling device for pharmaceutical glycerin, comprising: a storage tank 10 for storing glycerin raw material at a set pressure; a filling cylinder 20 connected to the discharge end of the storage tank 10, with a plurality of discharge nozzles 21 arranged on one side, the plurality of discharge nozzles 21 being spaced apart along the axial direction of the filling cylinder 20; and a filling mandrel 30 installed inside the filling cylinder 20, adapted to the filling cylinder 20, and capable of rotating along its own axis and sealing the gap between itself and the filling cylinder 20, with a plurality of filling cavities 3 on one side. 1. The plurality of filling cavities 31 are provided in a one-to-one correspondence with the plurality of discharge nozzles 21; the elastic energy storage mechanism 40 is installed in the corresponding filling cavity 31; wherein, when the filling cavity 31 is facing the feeding side of the filling cylinder 20, the glycerol raw material enters the filling cavity 31 and compresses the elastic energy storage mechanism 40, and when the filling cavity 31 is facing the discharge nozzle 21, the elastic energy storage mechanism 40 outputs the glycerol in the filling cavity 31 from the corresponding discharge nozzle 21.

[0033] It should be understood that the storage tank 10 is a sealable tank capable of storing glycerin at a corresponding pressure. Pressurizing the glycerin in the storage tank 10 can be achieved using a structure similar to a hydraulic accumulator, such as a diaphragm structure or a spring diaphragm structure. Alternatively, it can be achieved by configuring a compressed gas source (protective gas, not oxygen, but usually an inert gas or nitrogen), such as a nitrogen compressed gas storage tank supplying gas, so that the glycerin pressure in the storage tank 10 is maintained above the set pressure value. Simultaneously, a limit rod is provided at the bottom of the filling cavity 31, and the glycerin pressure in the storage tank 10 should ensure that the piston of the elastic energy storage mechanism 40 is pressed against the limit rod, thereby ensuring that the volume of glycerin contained in the filling cavity 31 is equal each time.

[0034] It is understood that a feed groove 22 is provided on one inner wall of the filling cylinder 20, and the bottom of the feed groove 22 is connected to the discharge end of the storage tank 10. The feed groove 22 extends along the axial direction of the filling cylinder 20, and the length of the feed groove 22 should be greater than the distance between the two filling cavities 31. That is, all filling cavities 31 should be directly aligned with the feed groove 22 to ensure that the glycerin in the storage tank 10 can smoothly enter the corresponding filling cavity 31.

[0035] In this embodiment, the filling cavity 31 has a cylindrical hole structure, which facilitates the processing of the filling cavity 31 and the setting of the elastic energy storage mechanism 40.

[0036] Combination Figure 3 The elastic energy storage mechanism 40 includes: a piston 41 adapted to the cross-section of the filling cavity 31 and capable of moving along the axial direction of the filling cavity 31; a sealing ring 42 sleeved on the side wall of the piston 41 for sealing the gap between the piston 41 and the side wall of the filling cavity 31; and an energy storage spring 43 installed between the bottom of the filling cavity 31 and the piston 41 to ensure that the elastic energy storage is compressed under the pressure of the glycerin raw material in the storage tank 10 and that the glycerin is pushed out of the filling cavity 31 when the filling cavity 31 is facing the discharge nozzle 21.

[0037] Generally, the opening end of the filling cavity 31 is provided with a limiting part 32, which is used to limit the piston 41 within the filling cavity 31 to prevent the piston 41 from being pushed out of the filling cavity 31 when the energy storage spring 43 rebounds.

[0038] Based on this, this embodiment also includes a sealing sleeve 50; the sealing sleeve 50 is fixed inside the filling cylinder 20 and sleeved outside the filling mandrel 30 to seal the gap between the filling mandrel 30 and the inner wall of the filling cylinder 20; the sealing sleeve 50 is provided with a feed slit 51, which is directly opposite the feed groove 22 of the filling cylinder 20; the sealing sleeve 50 is also provided with a discharge boss 52, which is embedded in the discharge nozzle 21, and a filling flow channel is provided in the middle of the discharge boss 52, which can connect to the corresponding filling cavity 31 to ensure the sealing of the gap between the filling mandrel 30 and the filling cylinder 20 and prevent glycerin raw material leakage.

[0039] It is understood that the filling mandrel 30 is made of metal or other non-metallic materials with high structural strength. In this embodiment, the filling mandrel 30 is made of polytetrafluoroethylene (PTFE) to utilize the self-lubricating properties of PTFE to reduce the resistance during rotation of the filling mandrel 30.

[0040] Accordingly, the sealing sleeve 50 is generally made of rubber to ensure that it has sufficient sealing performance. In this embodiment, the sealing sleeve 50 is made of fluororubber to ensure that it has sufficient oil resistance and a sufficient service life.

[0041] It should be noted that this embodiment also includes a filling motor, which is connected to the filling mandrel 30 for driving the filling mandrel 30 to rotate. The filling motor is a stepper motor to facilitate precise control of the rotation angle of the filling mandrel 30.

[0042] In summary, the pharmaceutical glycerin filling device provided in this embodiment includes a storage tank 10, a filling cylinder 20, a filling mandrel 30, an elastic energy storage mechanism 40, and a filling motor. The filling cylinder 20 is connected to the discharge end of the storage tank 10 and has multiple discharge nozzles 21 on one side. The filling mandrel 30 is installed inside the filling cylinder 20, can rotate along its own axis and seal the gap between itself and the filling cylinder 20, and has multiple filling cavities 31 on one side. The multiple filling cavities 31 are arranged one-to-one with the multiple discharge nozzles 21. The elastic energy storage mechanism 40 is installed in the corresponding filling cavity 31. The filling motor is connected to the filling mandrel 30 for transmission.

[0043] In use, glycerin raw material is filled into the storage tank 10 at a set pressure, while the medicine is conveyed to the corresponding outlet 21. The filling motor drives the filling mandrel 30 to rotate, so that the filling cavity 31 is directly opposite the feed side of the filling cylinder 20. At this time, due to the pressure inside the storage tank 10, the glycerin raw material enters the filling cavity 31 and compresses the elastic energy storage mechanism 40, so that the filling cavity 31 can accommodate the set volume of glycerin. Then, the filling motor drives the filling mandrel 30 to rotate toward the outlet 21. Due to the pressure inside the storage tank 10 and the sealing sleeve 50 sealing the gap between the filling mandrel 30 and the filling cylinder 20, the glycerin in the filling cavity 31 is kept within the filling cavity 31. When the filling cavity 31 moves to the position directly opposite the discharge nozzle 21, the energy storage spring 43 of the elastic energy storage mechanism rebounds, driving the piston 41 to reset. The piston 41 then presses the glycerin in the filling cavity 31 into the discharge boss 52, thereby allowing the elastic energy storage mechanism 40 to output the glycerin in the filling cavity 31 from the corresponding discharge nozzle 21 and fill it into the corresponding medicine bottle.

[0044] In summary, the pharmaceutical glycerin filling device provided in this embodiment, through a purely mechanical structure, fills a set amount of glycerin into a medicine bottle. Compared with using a metering device to measure the dosage of glycerin, it has high measurement reliability and small deviation, and can reduce the frequency and number of sampling inspections of the dosage of glycerin medicine bottles, thereby reducing production costs.

[0045] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A filling device for pharmaceutical glycerol, characterized in that include: Storage tank (10) is used to store glycerin raw material at a set pressure; A filling cylinder (20) is connected to the discharge end of the storage tank (10), and a plurality of discharge nozzles (21) are provided on one side. The plurality of discharge nozzles (21) are spaced apart along the axial direction of the filling cylinder (20). A filling mandrel (30) is installed inside the filling cylinder (20), is adapted to the filling cylinder (20), and can rotate along its own axis and seal the gap between itself and the filling cylinder (20). A plurality of filling cavities (31) are provided on one side, and the plurality of filling cavities (31) are provided in a one-to-one correspondence with the plurality of discharge nozzles (21). An elastic energy storage mechanism (40) is installed in the corresponding filling cavity (31); When the filling cavity (31) is facing the feeding side of the filling cylinder (20), the glycerol raw material enters the filling cavity (31) and compresses the elastic energy storage mechanism (40). When the filling cavity (31) is facing the discharge nozzle (21), the elastic energy storage mechanism (40) outputs the glycerol in the filling cavity (31) from the corresponding discharge nozzle (21).

2. The pharmaceutical glycerol filling device according to claim 1, characterized in that A feeding groove (22) is provided on one side of the inner wall of the filling cylinder (20). The bottom of the feeding groove (22) is connected to the discharge end of the storage tank (10), and the feeding groove (22) extends along the axial direction of the filling cylinder (20).

3. The pharmaceutical glycerol filling device according to claim 2, characterized in that It also includes a sealing sleeve (50); The sealing sleeve (50) is fixed inside the filling cylinder (20) and sleeved outside the filling mandrel (30) to seal the gap between the filling mandrel (30) and the inner wall of the filling cylinder (20); The sealing sleeve (50) is provided with a feed slit (51), which is directly opposite the feed groove (22) of the filling cylinder (20); The sealing sleeve (50) is also provided with a discharge boss (52), which is embedded in the discharge nozzle (21), and a filling channel is provided in the middle of the discharge boss (52), which can connect to the corresponding filling cavity (31).

4. The pharmaceutical glycerol filling device according to claim 3, characterized in that The filling mandrel (30) is made of polytetrafluoroethylene.

5. The pharmaceutical glycerin filling device according to claim 3, wherein The sealing sleeve (50) is made of fluororubber.

6. The pharmaceutical glycerol filling device according to claim 1, characterized in that The filling cavity (31) has a cylindrical hole structure.

7. The filling apparatus for pharmaceutical glycerin according to claim 6, characterized in that, The elastic energy storage mechanism (40) includes: The piston (41) is adapted to the cross section of the filling cavity (31) and is able to move along the axial direction of the filling cavity (31); A sealing ring (42) is fitted onto the side wall of the piston (41) to seal the gap between the piston (41) and the side wall of the filling cavity (31); An energy storage spring (43) is installed between the bottom of the filling cavity (31) and the piston (41).

8. The pharmaceutical glycerol filling device according to claim 7, characterized in that The opening end of the filling cavity (31) is provided with a limiting part (32), which is used to limit the piston (41) within the filling cavity (31).

9. The pharmaceutical glycerol filling device according to any one of claims 1 to 8, characterized in that It also includes a filling motor, which is connected to the filling mandrel (30) in a transmission connection.

10. The pharmaceutical glycerol filling device according to claim 9, characterized in that The filling motor is a stepper motor.

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