A repose angle detector and detection method for powder or granular materials

Abstract

An angle of repose detector and method applicable to powdered or granular raw materials are disclosed. The detector includes a base plate (with a bubble level and leveling bolts), a receiving trough, a support column, a 6cm diameter stacking tray, a column, a sliding sleeve, a locking bolt, a rack-and-pinion telescopic slide, and a transparent semi-circular protractor. The protractor is connected to the movable part of the slide via a damping shaft, and a horizontal reference line is provided on the movable part. During detection: first, level the base plate and move the protractor to the far right; then, slowly pour the raw material to be tested onto the stacking tray to form a cone-shaped material; adjust the height of the sliding sleeve so that the straight edge of the protractor is approximately parallel to the cone surface; adjust the telescopic slide to the left so that the straight edge of the protractor is close to and conforms to the cone surface; directly read the angle between the protractor and the horizontal reference line to obtain the angle of repose. This invention has a simple structure and is easy to operate. It can simulate the actual flow of raw materials and quickly and accurately read the angle of repose, providing quantitative flow parameters for tableting, filling, and canning processes in the pharmaceutical industry.

Description

Technical Field

[0001] This invention relates to an angle of repose detector and detection method suitable for powder or granular raw materials. Background Technology

[0002] In the pharmaceutical industry, the flowability of powders or granules used in the production of oral solid dosage forms has a significant impact on the quality attributes of processes such as tableting, filling, and canning. The size of the angle of repose can directly reflect the flowability of powders and granules. By detecting the angle of repose of powders or granules, the angle of repose of powders or granules can be directly quantified, providing accurate process parameters for production.

[0003] Existing angle of repose measuring devices are complex in structure and cumbersome to operate. For details, please refer to Chinese Patent CN202410881858.7. Currently, there is no simple and effective means to directly quantify the flowability of powder or granules, thereby determining effective process parameters. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide a repose angle detector suitable for powder or granular raw materials. This detector can simulate the actual flow of powder or granular raw materials to detect the repose angle of powder or granules. It has a simple structure and is easy to operate.

[0005] The second technical problem to be solved by the present invention is to provide a detection method for the angle of repose detector applicable to powder or granular raw materials. The method is simple in steps, easy to operate, and allows direct reading. It can quickly and accurately obtain the angle of repose of powder or granular raw materials in a very short time.

[0006] To address the aforementioned technical problems, this invention provides a repose angle detector suitable for powdered or granular raw materials. The detector includes a horizontally arranged rectangular base plate, with a bubble level embedded in the upper side of the base plate. Leveling bolts are located at the four corners of the lower side of the base plate. A receiving groove with an open upper side is located in the center of the upper side of the base plate. A vertically extending support column is located in the center of the receiving groove, and a circular stacking tray with a diameter of 6 cm is mounted on the support column. The vertical projection of the stacking tray falls into the receiving groove. A circular upright column is located on the right side of the receiving groove on the upper side of the base plate. A sliding sleeve is fitted on the column, which slides vertically with the column. A locking bolt is provided on the sliding sleeve, which passes through the sliding sleeve radially and fits tightly with the column. A horizontally arranged rack-and-pinion telescopic slide is also provided on the outside of the sliding sleeve. The movable part of the rack-and-pinion telescopic slide extends horizontally to the left. A vertically arranged semi-circular protractor is provided at the left end of the movable part. The protractor is made of transparent material. The protractor is connected to the movable part through a damping shaft with the axis running back and forth. The protractor has an angle scale. A horizontal reference line is provided on the movable part.

[0007] To solve the second technical problem mentioned above, the present invention provides a detection method for an angle of repose detector suitable for powder or granular raw materials, comprising the following steps:

[0008] (1) By observing the deviation of the bubble level, adjust the four leveling bolts to keep the base plate level, and adjust the rack and pinion telescopic slide to move the protractor to the rightmost position.

[0009] (2) Slowly pour the powder or granular raw material to be tested onto the material tray, allowing the powder or granular raw material to flow freely and finally form a cone-shaped material;

[0010] (3) Loosen the locking bolt and adjust the sliding sleeve to a suitable height. Rotate the protractor so that the straight edge of the protractor is roughly parallel to the cone surface of the conical material.

[0011] (4) Adjust the rack and pinion telescopic slide to extend to the left so that the right-angle side of the protractor is close to the cone surface of the conical material. At the same time, fine-tune the angle of the protractor so that the right side of the protractor is in contact with the cone surface of the conical material. At this time, read the angle between the protractor and the horizontal baseline, which is the angle of repose of the material to be measured.

[0012] Advantages of this invention:

[0013] This invention discloses an angle of repose detector suitable for powdered or granular raw materials. It can simulate the actual flow of powdered or granular raw materials to detect the angle of repose. It features a simple structure, convenient operation, and direct reading, allowing for rapid and accurate acquisition of the angle of repose in a very short time. The size of the angle of repose directly reflects the flowability of powdered or granular raw materials. By detecting the angle of repose, accurate process parameters can be provided for production, thereby improving the quality of processes such as tableting, filling, and packaging in the pharmaceutical industry. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the usage state of the present invention. Detailed Implementation

[0015] See Figure 1A repose angle detector suitable for powder or granular raw materials includes a horizontally arranged rectangular base plate 1. A bubble level 11 is embedded on the upper side of the base plate 1. Leveling bolts 12 are provided at the four corners of the lower side of the base plate 1. A receiving groove 2 with an open upper side is provided in the middle of the upper side of the base plate 1. A support column 3 extending vertically upward is provided in the middle of the receiving groove 2. A circular stacking tray 4 with a diameter of 6 cm is provided on the support column 3. The vertical projection of the stacking tray 4 falls into the receiving groove 2. A circular column 5 is provided on the upper side of the base plate 1 corresponding to the right side of the receiving groove 2. A sliding sleeve 51 is fitted on the column 5 and slides vertically with the column 5. Two locking bolts 52 are provided on the sliding sleeve 51, which penetrate the sliding sleeve 51 radially and are tightly fitted with the column 5. A further locking bolt is provided on the outer side of the sliding sleeve 51. A horizontally arranged rack-and-pinion telescopic slide 6 is provided. The fixed part 61 of the rack-and-pinion telescopic slide 6 is connected to the sliding sleeve, the movable part 62 extends horizontally to the left, and the gear knob 63 is located on the upper side of the fixed part 61 (the rack-and-pinion telescopic slide 6 is an existing mature product and will not be described in detail in this embodiment). A vertically arranged semi-circular protractor 7 is provided at the left end of the movable part 62. The protractor 7 is made of transparent material. The protractor 7 is connected to the movable part 62 through a damping shaft 71 with the axis direction running back and forth (the damping shaft 71 is an existing conventional part and will not be described in detail here). The protractor 7 has an angle scale, and the movable part 62 has a horizontal reference line (the angle scale on the protractor is only for illustration, and the horizontal reference line is not shown in the figure).

[0016] A detection method for an angle of repose detector suitable for powder or granular raw materials includes the following steps:

[0017] (1) By observing the deviation of the bubble level 11, adjust the four leveling bolts 12 to keep the base plate 1 horizontal, and adjust the rack and pinion telescopic slide 6 by the gear knob 63 to move the protractor 7 to the rightmost position.

[0018] (2) Slowly pour the powder or granular raw material 8 to be tested onto the material tray, so that the powder or granular raw material 8 flows freely and finally forms a cone-shaped material;

[0019] (3) Loosen the locking bolt 52 and operate the sliding sleeve 51 to adjust the appropriate height, and rotate the protractor 7 so that the straight edge of the protractor 7 is approximately parallel to the cone surface of the conical material;

[0020] (4) Adjust the rack and pinion telescopic slide 6 to extend to the left by the gear knob 63 so that the right-angle side of the protractor 7 is close to the cone surface of the conical material. At the same time, finely adjust the angle of the protractor 7 so that the right side of the protractor 7 is in contact with the cone surface of the conical material. At this time, read the angle between the protractor 7 and the horizontal baseline, which is the angle of repose of the raw material 8 to be measured.

Claims

1. A repose angle detector suitable for powdered or granular raw materials, characterized in that: The device includes a horizontally arranged rectangular base plate with a bubble level embedded on its upper side. Leveling bolts are located at the four corners of the lower side of the base plate. A receiving groove with an open upper side is located in the center of the upper side of the base plate. A vertically extending support column is located in the center of the receiving groove, and a circular stacking tray with a diameter of 6cm is mounted on the support column. The vertical projection of the stacking tray falls into the receiving groove. A circular upright is located on the right side of the receiving groove on the upper side of the base plate. A sliding sleeve is fitted onto the upright and slides vertically. A locking bolt is located on the sliding sleeve, penetrating radially and tightly engaging with the upright. A horizontally arranged rack-and-pinion telescopic slide is located outside the sliding sleeve. The movable part of the rack-and-pinion telescopic slide extends horizontally to the left. A vertically arranged semi-circular protractor is located at the left end of the movable part. The protractor is made of transparent material and is connected to the movable part via a damping shaft with a front-to-back axial direction. The protractor has angle graduations, and a horizontal reference line is located on the movable part.

2. The detection method of the angle of repose detector applicable to powder or granular raw materials according to claim 1, characterized in that, Includes the following steps: (1) By observing the deviation of the bubble level, adjust the four leveling bolts to keep the base plate level, and adjust the rack and pinion telescopic slide to move the protractor to the rightmost position. (2) Slowly pour the powder or granular raw material to be tested onto the material tray, allowing the powder or granular raw material to flow freely and finally form a cone-shaped material; (3) Loosen the locking bolt and adjust the sliding sleeve to a suitable height. Rotate the protractor so that the straight edge of the protractor is roughly parallel to the cone surface of the conical material. (4) Adjust the rack and pinion telescopic slide to extend to the left so that the right-angle side of the protractor is close to the cone surface of the conical material. At the same time, fine-tune the angle of the protractor so that the right side of the protractor is in contact with the cone surface of the conical material. At this time, read the angle between the protractor and the horizontal baseline, which is the angle of repose of the material to be measured.

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