Device for measuring tap density of powder

Abstract

The utility model discloses a device for measuring the tap density of powder, which relates to the technical field of powder tap and comprises a base, a glass cover, a sealing cover, a dustproof cover and an electromagnetic vibrator in the dustproof cover, the electromagnetic vibrator is arranged above the sealing cover, a vibrating shaft of the electromagnetic vibrator penetrates through the sealing cover and is fixedly provided with a connecting rod, and the connecting rod is connected with the glass cover. A connecting plate is fixed to the bottom end of the connecting rod, vibrating rods are arranged at the bottom end of the connecting plate in a circumferential array mode, elastic assemblies are evenly fixed to the side face of the connecting plate, a vibrating plate is fixed to the bottom ends of the elastic assemblies, and through holes matched with the vibrating rods are evenly formed in the vibrating plate. The device is reasonable in design structure, stable vibration can be generated through the electromagnetic vibrator, medicine powder can be fully and uniformly compacted by combining the synergistic effect of the elastic assembly and the vibration rod, so that the measurement accuracy is improved, the magnifying lens and the glass cover are arranged on the connecting frame, the position of the magnifying lens and the position of the glass cover can be adjusted, and the measurement accuracy is improved. And an operator can conveniently observe the state change of the powder in real time in the compaction process.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical powder compaction technology, specifically a device for measuring the compaction density of pharmaceutical powder. Background Technology

[0002] In the pharmaceutical field, the physical properties of drug powder, especially tap density, play a crucial role in drug research and development, production, and quality control. Tap density refers to the mass per unit volume of powder in a container after it has been tapped under specified conditions. It reflects the degree of compact packing of drug powder under a certain pressure.

[0003] With the continuous development of modern pharmaceutical technology, higher requirements have been placed on the measurement accuracy and efficiency of the tapped density of pharmaceutical powders. Traditional measurement methods and devices have many limitations. For example, some simple manual tapping tools cannot guarantee the consistency and accuracy of the tapping process because the force, frequency and time of manual operation are difficult to control precisely, which leads to large errors and poor repeatability of the measurement results.

[0004] In observing the compaction process of pharmaceutical powder, observations are typically limited to fixed angles or a few observation points, making it difficult to fully understand the dynamic changes of the powder during compaction. For example, it is impossible to clearly observe the differences in compaction effects at different heights of the powder, which is highly detrimental to in-depth research into the compaction mechanism of pharmaceutical powder and the optimization of the measurement process.

[0005] Furthermore, the sealing and stability of the device are also key factors affecting the measurement results. Some devices are prone to powder leakage during the compaction process, which not only pollutes the environment but also leads to inaccurate measurements of powder mass and volume, while also exhibiting insufficient stability during vibration. Therefore, we provide a device for measuring the compacted density of pharmaceutical powder to solve these problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a device for measuring the tap density of pharmaceutical powder.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a device for measuring the tap density of pharmaceutical powder, comprising a base, a glass cover, a sealing cover, a dust cover, and an electromagnetic vibrator within the dust cover. The electromagnetic vibrator is positioned above the sealing cover, and a connecting rod is fixed to the vibrating shaft of the electromagnetic vibrator through the sealing cover. A connecting plate is fixed to the bottom end of the connecting rod, and vibrating rods are arranged in a circumferential array at the bottom end of the connecting plate. Elastic components are uniformly fixed to the side of the connecting plate, and a vibrating plate is fixed to the bottom end of the elastic components. Through holes adapted to the vibrating rods are uniformly opened in the vibrating plate, and rubber rings are placed in the through holes and fitted onto the surface of the vibrating rods. A connecting frame is provided on the base, and glass covers are fixed to the front and rear of the connecting frame. Magnifying lenses are fitted onto the surfaces of the glass cover and the connecting frame.

[0010] Furthermore, an opening is formed at the upper end of the connecting frame and the glass cover, and a sealing cap is provided at the opening at the upper end of the connecting frame and the glass cover.

[0011] Furthermore, the elastic component includes a fixed plate fixed to the connecting plate, a telescopic rod fixed between the fixed plate and the vibrating plate, a spring sleeved on the surface of the telescopic rod, and the upper and lower ends of the spring overlapping the surfaces of the fixed plate and the vibrating plate, respectively.

[0012] Furthermore, a limiting groove is provided on the base, and the bottom end of the connecting frame is locked inside the limiting groove. A powder container is provided on the base, and the elastic mechanism and the vibration rod are located inside the powder container.

[0013] Furthermore, the surface of the connecting frame is provided with a sliding groove, a slider is provided in the sliding groove, a slot is provided on the surface of the slider, a block is provided in the slot, and a magnifying lens is fixed on the surface of the block.

[0014] (III) Beneficial Effects:

[0015] Compared with existing technologies, this device for measuring the tap density of pharmaceutical powder has the following advantages:

[0016] I. This utility model generates stable vibration through an electromagnetic vibrator. Combined with the synergistic effect of the elastic component and the vibrating rod, it can fully and uniformly compact the medicine powder, thereby improving the accuracy of measurement. The design of the adjustable magnifying lens and glass cover on the connecting frame allows the operator to observe the state changes of the medicine powder in real time during the compaction process, which helps to judge the compaction effect and adjust the measurement parameters in a timely manner.

[0017] Second, this utility model effectively prevents the leakage of medicine powder during the measurement process through the sealing design between the cover and the base and the connecting frame, as well as the sealing cover on the top. This avoids environmental pollution and measurement errors. The reasonable design and connection method of the base, connecting frame and other components ensure the stability of the entire device during vibration. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 In this utility model Figure 1 Schematic diagram of a partial three-dimensional structure;

[0020] Figure 3 This is a three-dimensional structural diagram of the glass cover and connecting frame in this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the electromagnetic vibrator and elastic component in this utility model;

[0022] Figure 5 This is a cross-sectional enlarged structural schematic diagram of the vibration plate in this utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the base in this utility model;

[0024] Figure 7 This is a schematic diagram of the disassembled magnifying lens structure in this utility model.

[0025] In the diagram: 1. Base; 2. Glass cover; 3. Magnifying lens; 4. Connecting frame; 5. Sealing cover; 6. Dust cover; 7. Connecting rod; 8. Connecting plate; 9. Elastic component; 901. Fixing plate; 902. Spring; 903. Telescopic rod; 10. Powder container; 11. Slide groove; 12. Vibrating plate; 13. Vibrating rod; 14. Electromagnetic vibrator; 15. Rubber ring; 16. Through hole; 17. Limiting groove; 18. Locking block; 19. Sliding block; 20. Locking slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-7As shown, this utility model provides a technical solution: a device for measuring the compaction density of pharmaceutical powder, including a base 1, a glass cover 2, a sealing cover 5, a dust cover 6, and an electromagnetic vibrator 14 in the dust cover 6. The electromagnetic vibrator 14 is placed above the sealing cover 5, and the vibration shaft of the electromagnetic vibrator 14 passes through the sealing cover 5 and is fixed with a connecting rod 7. A connecting plate 8 is fixed to the bottom end of the connecting rod 7, and vibration rods 13 are arranged in a circular array at the bottom end of the connecting plate 8. Through the electromagnetic conversion of the electromagnetic vibrator 14, electrical energy can be efficiently converted into stable mechanical vibration energy to meet the compaction requirements of different pharmaceutical powders. Its control circuit can be connected to an external controller so that the operator can accurately adjust the vibration parameters according to the characteristics of the pharmaceutical powder.

[0028] Meanwhile, elastic components 9 are uniformly fixed on the side of the connecting plate 8. The elastic components 9 include a fixing plate 901 fixed to the connecting plate 8, a telescopic rod 903 fixed between the fixing plate 901 and the vibrating plate 12, and a spring 902 sleeved on the surface of the telescopic rod 903. The upper and lower ends of the spring 902 overlap with the surfaces of the fixing plate 901 and the vibrating plate 12, respectively. The telescopic rod 903 is adjustable in length, which can control the extension speed of the spring 902 and the return speed of the vibrating plate 12, so as to avoid uneven movement of the powder inside the powder container 10 due to the spring 902 rebounding too fast.

[0029] Specifically, a vibrating plate 12 is fixed to the bottom of the elastic component 9. The surface of the vibrating plate 12 is smoothed to reduce the adhesion of drug powder. The number, diameter, and distribution of through holes 16 on the vibrating plate 12 are matched to the number of vibrating rods 13 and the circumferential array spacing, ensuring that each vibrating rod 13 can pass through smoothly and fit tightly with the rubber ring 15. Through holes 16, adapted to the vibrating rods 13, are evenly distributed in the vibrating plate 12. A rubber ring 15 is placed in each through hole 16 and fits onto the surface of the vibrating rod 13. The rubber ring 15 is made of wear-resistant and drug-corrosion-resistant rubber material, and its inner diameter is slightly smaller than the outer diameter of the vibrating rod 13. This mutual cooperation achieves good sealing and shock absorption. The installation of the rubber ring 15 in the through holes 16 adopts an embedded or clamp-type structure to ensure that it will not fall off during vibration.

[0030] Specifically, a connecting frame 4 is provided on the base 1, and a limiting groove 17 is provided on the base 1. The bottom end of the connecting frame 4 is locked inside the limiting groove 17. A powder container 10 is provided on the base 1, and the elastic mechanism and the vibration rod 13 are located inside the powder container 10. The shape and size of the limiting groove 17 match the shape of the bottom end of the connecting frame 4 to ensure that the connecting frame 4 will not shake or shift after installation, and at the same time ensure that the connecting frame 4 can be stably locked in it.

[0031] Specifically, the surface of the connecting frame 4 is provided with a sliding groove 11, in which a sliding block 19 is provided to slide up and down. A slot 20 is provided on the surface of the sliding block 19, in which a locking block 18 is provided. A magnifying lens 3 is fixed on the surface of the locking block 18. Glass covers 2 are fixed at the front and rear of the connecting frame 4. The magnifying lens 3 is fitted onto the surface of the glass cover 2 and the connecting frame 4. An opening is formed at the upper end of the connecting frame 4 and the glass cover 2. A sealing cover 5 is provided at the opening at the upper end of the connecting frame 4 and the glass cover 2. The sliding block 19 can move up and down on the surface of the glass cover 2 in cooperation with the magnifying lens 3. At the same time, during the process of compacting the medicine powder inside the powder container 10, the compaction of the medicine powder inside the powder container 10 can be observed through the magnifying lens 3.

[0032] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model 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 utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the tap density of a pharmaceutical powder comprising a base (1), a glass cover (2), a sealing cover (5) and a dust cover (6) and an electromagnetic vibrator (14) in the dust cover (6), characterized in that: The electromagnetic vibrator (14) is arranged above the sealing cover (5), the electromagnetic vibrator (14) is fixed with the connecting rod (7) through the sealing cover (5), the bottom end of the connecting rod (7) is fixed with the connecting plate (8), the bottom end of the connecting plate (8) is arranged in a circumferential array and is provided with the vibration rod (13), the side of the connecting plate (8) is uniformly fixed with the elastic assembly (9), the bottom end of the elastic assembly (9) is fixed with the vibration plate (12), the vibration plate (12) is uniformly provided with the through hole (16) matched with the vibration rod (13), the rubber ring (15) is arranged in the through hole (16), and the rubber ring (15) is sleeved on the surface of the vibration rod (13), the base (1) is provided with the connecting frame (4), the glass cover (2) is fixed on the front and back of the connecting frame (4), and the glass cover (2) and the connecting frame (4) are sleeved with the magnifying lens (3).

2. The device of claim 1, wherein: The connecting frame (4) and the glass cover (2) are provided with the sealing cover (5) on the upper end.

3. The device of claim 1, wherein: The elastic assembly (9) comprises the fixed plate (901) fixed with the connecting plate (8), the telescopic rod (903) fixed between the fixed plate (901) and the vibration plate (12), the spring (902) sleeved on the surface of the telescopic rod (903), and the upper end and the lower end of the spring (902) are respectively connected with the surface of the fixed plate (901) and the vibration plate (12).

4. The device of claim 2, wherein: The base (1) is provided with the limiting groove (17), and the bottom end of the connecting frame (4) is clamped in the limiting groove (17); the base (1) is provided with the powder container (10), and the elastic mechanism and the vibration rod (13) are located in the powder container (10).

5. The device of claim 1, wherein: The surface of the connecting frame (4) is provided with the sliding groove (11), the sliding groove (11) is provided with the sliding block (19), the surface of the sliding block (19) is provided with the clamping groove (20), the clamping groove (20) is provided with the clamping block (18), and the surface of the clamping block (18) is fixed with the magnifying lens (3).

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