A pharmaceutical powder refining and screening device

Abstract

The present application relates to the technical fields of screening device, in particular to a pharmaceutical powder refining and screening device, which comprises a screening inner cover, a sieve hole is arranged on the screening inner cover, a refining assembly, a rotating seat is arranged in the screening inner cover, a grinding head is arranged on the rotating seat; a bottom cavity is arranged at the grinding head, a rotating brush head is rotatably arranged in the bottom cavity; an annular hole cover is rotatably arranged on the rotating seat through a transmission assembly, the annular hole cover is filled with ball milling beads; the refining assembly can grind and refine the powder in the screening inner cover, and the rotating brush head can prevent the ground powder from adhering to the cover wall of the screening inner cover; the rotating seat is rotated through the transmission assembly, the annular hole cover and the rotating brush head are rotated, the annular hole cover and the rotating seat are matched to improve the refining effect of the powder; compared with the traditional screening device, the device does not need to repeatedly pour out the large-particle-size powder screened out, can continuously refine and crush the large-particle-size powder, and is beneficial to improve the utilization rate of the pharmaceutical powder.

Description

Technical Field

[0001] This invention relates to the field of screening equipment technology, and specifically to a pharmaceutical powder refining and screening device. Background Technology

[0002] In the pharmaceutical manufacturing process, a large amount of pharmaceutical powder is required. In order to facilitate subsequent dissolution, mixing or preparation, the raw materials need to be finely sieved. Most of the current sieving devices do not have the function of crushing raw materials and mainly achieve grading through vibrating sieve action.

[0003] A patent with publication number CN112604959A discloses a powder sieving device, comprising: a sieving chamber having a positive pressure interface and a negative pressure interface; and a screen disposed within the sieving chamber, positioned between the positive pressure interface and the negative pressure interface. A high-pressure air source generates airflow disturbance on the powder sample above the screen, preventing fine powder particles from adhering to the screen openings. The powder passes through the screen under negative pressure at the lower end, while large-diameter impurities are filtered out. However, this device only achieves the sieving function, filtering out only large-diameter particles, and is therefore not suitable for crushing and sieving pharmaceutical raw materials.

[0004] In summary, considering the need for continuous grinding and sieving of powder raw materials for use in pharmaceutical production, rather than simply sieving to retain large-particle-size powder, it is necessary to make full use of pharmaceutical raw materials. Therefore, we propose a pharmaceutical powder refining and sieving device. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section and provide a pharmaceutical powder refining and sieving device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A pharmaceutical powder refining and sieving device includes a sieving inner cover for holding the powder to be refined and sieved, the sieving inner cover having sieve holes, and further includes:

[0008] The refining component includes a rotating seat rotatably mounted inside the screening inner cover, and the rotating seat is provided with a grinding head for conforming to the screening inner cover to refine the powder;

[0009] The grinding head is provided with a bottom cavity, and a rotating brush head is rotatably installed in the bottom cavity;

[0010] An annular perforated cover is rotatably mounted on the rotating seat via a transmission assembly and is coaxially arranged with the inner sieve cover. The interior of the annular perforated cover is filled with grinding balls.

[0011] Preferably, the rotating seat is provided with a shaft cavity coaxially arranged with the inner screen cover, and an insert cylinder is provided below the shaft cavity, with a first gear provided on the outer wall of the insert cylinder.

[0012] Preferably, the rotating seat is provided with a groove for installing the annular hole cover, and a limiting plate for limiting the annular hole cover is installed on the groove;

[0013] The inner wall of the annular cover is provided with meshing teeth.

[0014] Preferably, the transmission assembly includes a insert shaft rotatably mounted in the shaft cavity, and a second gear is provided at the bottom of the insert shaft;

[0015] The first gear and the second gear are respectively meshed with the fourth gear and the third gear;

[0016] The first gear and the second gear are coaxially mounted with a drive motor;

[0017] A transmission belt is installed between the rotating brush head and the insertion shaft.

[0018] A transmission gear is coaxially connected to the rotating shaft of the rotating brush head, and the transmission gear meshes with the meshing teeth.

[0019] Preferably, the screening inner cover includes a shaft hole for inserting the insert cylinder, and a bottom cylinder is provided below the screening inner cover;

[0020] An mounting plate is installed at the bottom cylinder, and the drive motor is mounted on the mounting plate.

[0021] Preferably, the grinding head adopts an inverted trapezoidal structure with the bottom surface increasing in size from bottom to top.

[0022] Preferably, the screening inner cover is provided with an annular groove that fits into the grinding head.

[0023] Preferably, the sieve holes are located at the bottom of the annular groove, and the rotation path of the rotating brush head is aligned with the position of the sieve holes.

[0024] Preferably, an outer unloading cover is installed outside the inner screening cover, and an unloading cavity is left between the outer unloading cover and the inner screening cover. The unloading cavity is used to discharge the refined screened powder discharged through the screen holes.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This pharmaceutical powder refining and sieving device can grind and refine the powder in the sieving inner shroud through the provided refining components, and the provided rotating brush head can prevent the ground powder from adhering to the wall of the sieving inner shroud.

[0027] 2. This device innovatively achieves the rotation of the rotating seat through a transmission component, which in turn drives the annular orifice cover and the rotating brush head to rotate. The cooperation between the annular orifice cover and the rotating seat can improve the fineness of the powder.

[0028] 3. Compared with traditional screening devices, this device does not require repeated emptying of the large-diameter powder retained by the sieve. It can continuously refine and crush large-diameter powder, which is conducive to improving the utilization rate of pharmaceutical powder. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is an exploded view of the overall structure of the present invention;

[0032] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0033] Figure 4 This is an exploded cross-sectional view of the overall structure of the present invention;

[0034] Figure 5 This is a cross-sectional view of the overall structure of the present invention;

[0035] Figure 6 This is a cross-sectional view of the screening inner cover of the present invention;

[0036] Figure 7 This is one of the detailed exploded cross-sectional views of the components of this invention;

[0037] Figure 8 This is the second detailed exploded cross-sectional view of the components of this invention.

[0038] The meanings of the labels in the diagram are as follows:

[0039] 1. Unloading outer cover; 2. Screening inner cover; 201. Shaft hole; 21. Screen hole; 22. Bottom cylinder; 3. Annular hole cover; 31. Meshing teeth; 4. Refining component; 41. Rotating seat; 411. Shaft cavity; 412. Insert cylinder; 413. First gear; 414. Grinding head; 415. Insert groove; 416. Bottom cavity; 42. Limiting plate; 43. Insert shaft; 431. Second gear; 44. Transmission belt; 45. Rotating brush head; 46. Transmission gear; 47. Third gear; 48. Fourth gear; 5. Mounting plate; 6. Drive motor; 7. Grinding balls. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-8 The present invention will describe the above technical solution in detail through the following embodiments:

[0042] A pharmaceutical powder refining and sieving device includes a sieving inner cover 2 for holding the powder to be refined and sieved, the sieving inner cover 2 having sieve holes 21, including:

[0043] The refining component 4 includes a rotating seat 41 rotatably mounted inside the screening inner cover 2. The rotating seat 41 is equipped with a grinding head 414 for adhering to and refining the powder within the screening inner cover 2. Figures 3-5 ,as well as Figure 7 , Figure 8 As shown in the structure, a bottom cavity 416 is provided at the grinding head 414, and a rotating brush head 45 is rotatably installed in the bottom cavity 416. A transmission gear 46 is coaxially connected above the rotating brush head 45 through a rotating shaft.

[0044] The annular hole cover 3 is rotatably mounted on the rotating seat 41 via a transmission assembly and is coaxially arranged with the inner sieve cover 2. The annular hole cover 3 is filled with grinding balls 7. It should be noted that in this embodiment, the inner wall of the annular hole cover 3 is provided with meshing teeth 31. In order to ensure that the annular hole cover 3 can rotate smoothly, this embodiment is provided with a groove 415 for mounting the annular hole cover 3 on the rotating seat 41. A limiting plate 42 for limiting the annular hole cover 3 is installed on the groove 415, so that the annular hole cover 3 keeps rotating horizontally at the groove 415. This rotation process will allow the powder to enter the annular hole cover 3, and the grinding balls 7 will grind and crush the powder, thereby enhancing the powder refinement effect.

[0045] like Figures 5-8 As shown in the structure, the rotating seat 41 is provided with a shaft cavity 411 coaxially arranged with the screening inner cover 2, and a tube 412 is provided below the shaft cavity 411. The outer wall of the tube 412 is provided with a first gear 413. In this embodiment, the screening inner cover 2 includes a shaft hole 201 for inserting the tube 412, and a bottom cylinder 22 is provided below the screening inner cover 2. A mounting plate 5 is installed at the bottom cylinder 22, and the drive motor 6 is installed on the mounting plate 5.

[0046] The transmission assembly includes a insert shaft 43 rotatably mounted in a shaft cavity 411, and a second gear 431 is provided at the bottom of the insert shaft 43; the first gear 413 and the second gear 431 are respectively meshed with a fourth gear 48 and a third gear 47;

[0047] The first gear 413 and the second gear 431 are coaxially mounted with the drive motor 6, and a transmission belt 44 is installed between the rotating brush head 45 and the insert shaft 43. The transmission gear 46 meshes with the meshing teeth 31.

[0048] It should be explained that when the drive motor 6 is driven, the rotation of the fourth gear 48 and the third gear 47 will respectively drive the meshing first gear 413 and second gear 431. The rotation of the first gear 413 and the second gear 431 will respectively cause the rotating seat 41 and the insert shaft 43 to rotate. It is worth noting that the rotating seat 41 will drive the grinding head 414 to grind and refine the powder, while the insert shaft 43 will drive the rotating brush head 45 to rotate in the bottom cavity 416. At the same time, the insert shaft 43 will drive the transmission gear 46 to rotate through the transmission belt 44, which will cause the meshing annular hole cover 3 to rotate. The above processes can occur simultaneously to complete the fine sieving of the powder.

[0049] In this embodiment, the grinding head 414 adopts the following... Figure 5 , Figure 7 and Figure 8 The structure shown adopts an inverted trapezoidal structure with the bottom surface increasing from bottom to top. The inner sieve cover 2 is provided with an annular groove that fits with the grinding head 414. The sieve hole 21 is set at the bottom of the annular groove, and the rotation path of the rotating brush head 45 is aligned with the position of the sieve hole 21, which allows the powder to slide down the inclined surface to the sieve hole 21, and the rotation of the brush head 45 prevents the powder from adhering to the inner sieve cover 2.

[0050] like Figure 5 As shown in the structure, in order to better unload the material, an outer unloading cover 1 is installed outside the inner screening cover 2. An unloading cavity is left between the outer unloading cover 1 and the inner screening cover 2. The unloading cavity is used to discharge the refined screening powder discharged through the screen hole 21. The bottom cylinder 22 provided here can prevent the powder from interfering with the transmission components of the drive motor 6.

[0051] The working principle of the pharmaceutical powder refining and sieving device in this embodiment is as follows: pharmaceutical solid powder is poured into the inner sieve cover 2, and after the sealed cover is closed, the drive motor 6 is started. The drive motor 6 drives the rotating seat 41 to rotate, realizing the grinding function. At the same time, the annular hole cover 3 rotates. During this process, the ball milling beads 7 in the annular hole cover 3 will ball mill the powder. The finely refined powder will be discharged through the sieve hole 21. At the same time, the rotating brush head 45 rotates to prevent the powder from sticking to the wall of the inner sieve cover 2 during the grinding process. Pharmaceutical powder with qualified particle size can be obtained. It does not require separate sieving, is convenient to use, and has high application efficiency.

[0052] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0053] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A pharmaceutical powder refining and sieving device, comprising a sieving inner cover (2) for holding the powder to be refined and sieved, wherein the sieving inner cover (2) is provided with sieve holes (21), characterized in that: Also includes: The refining component (4) includes a rotating seat (41) rotatably mounted inside the sieve inner cover (2), and the rotating seat (41) is provided with a grinding head (414) for adhering to the sieve inner cover (2) to refine the powder. The grinding head (414) is provided with a bottom cavity (416), and a rotating brush head (45) is rotatably installed in the bottom cavity (416). The annular hole cover (3) is rotatably mounted on the rotating seat (41) via a transmission assembly and is coaxially arranged with the screening inner cover (2). The annular hole cover (3) is filled with ball milling beads (7). The rotating seat (41) is provided with a shaft cavity (411) coaxially arranged with the screening inner cover (2), and a tube (412) is provided below the shaft cavity (411). The outer wall of the tube (412) is provided with a first gear (413). The rotating seat (41) is provided with a groove (415) for installing the annular hole cover (3), and a limiting plate (42) for limiting the annular hole cover (3) is installed on the groove (415). The inner wall of the annular hole cover (3) is provided with meshing teeth (31). The transmission assembly includes a insert shaft (43) rotatably mounted in the shaft cavity (411), a second gear (431) is provided at the bottom of the insert shaft (43), the first gear (413) and the second gear (431) are respectively meshed with a fourth gear (48) and a third gear (47), and a drive motor (6) is coaxially mounted on the first gear (413) and the second gear (431). A transmission belt (44) is installed between the rotating brush head (45) and the insert shaft (43). A transmission gear (46) is coaxially connected to the rotating shaft of the rotating brush head (45). The transmission gear (46) meshes with the meshing teeth (31). The screening inner cover (2) includes a shaft hole (201) for inserting the insert (412), and a bottom cylinder (22) is provided below the screening inner cover (2). An mounting plate (5) is installed at the bottom cylinder (22), and the drive motor (6) is mounted on the mounting plate (5).

2. The pharmaceutical powder refining and sieving device as described in claim 1, characterized in that: The grinding head (414) adopts an inverted trapezoidal structure with the bottom surface increasing in size from bottom to top.

3. The pharmaceutical powder refining and sieving device as described in claim 2, characterized in that: The screening inner cover (2) is provided with an annular groove that fits into the grinding head (414).

4. The pharmaceutical powder refining and sieving device as described in claim 3, characterized in that: The sieve hole (21) is located at the bottom of the annular groove, and the rotation path of the rotating brush head (45) is aligned with the position of the sieve hole (21).

5. The pharmaceutical powder refining and sieving device as described in claim 1, characterized in that: The screening inner cover (2) is equipped with a discharge outer cover (1), and a discharge cavity is left between the discharge outer cover (1) and the screening inner cover (2). The discharge cavity is used to discharge the refined screening powder discharged through the screen hole (21).

Images