Medicinal powder filtering device for pharmaceutical production

Abstract

The utility model discloses a medicine powder filtering device for pharmaceutical production, relates to the field of pharmaceutical equipment, and aims to solve the problems that in the sieving process of conventional medicine powder, overlarge medicine powder particles cannot be treated in time, large-particle medicine powder cannot be treated in a sieving cavity, sieve pores are easily blocked, and the medicine powder sieving efficiency is low. The upper end of the base is fixedly connected with the filter cartridge, the side edge of the filter cartridge is provided with a feed port, the feed port is connected with a filter cavity, the lower end of the filter cavity is fixedly connected with a first sieve plate, the first sieve plate is rotatably connected with a spiral feeder, and the upper end of the spiral feeder is matched with a second sieve plate; the second sieve plate is fixedly connected with the filter cartridge, the second sieve plate is located at the upper end of the feeding port, and a discharging cavity communicated with the filter cavity is formed in the base. The spiral feeder is used for conveying and transferring large-particle medicine, and the screening efficiency of the first sieve net is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical equipment, in particular to a powder filtering device for pharmaceutical production. Background Art

[0002] In traditional Chinese medicine, the particle sizes of the crushed drug powders vary greatly. To meet the needs of medical treatment and pharmaceutical preparation, the operation process of separating the thick and fine powders from the mixture of thick and fine powders through a mesh-like tool is called "sieving" or "screening". However, when using a mesh-like tool to sieve the drug powder, the mesh holes may be blocked. In particular, large particle drug powders cannot be processed in time on the sieve plate, resulting in the accumulation of these particles in the screening cavity, occupying the space of the screening cavity. Over time, these accumulated large particle drug powders may even block the screening holes, seriously affecting the screening efficiency. Content of the Utility Model

[0003] In view of the above situation, to overcome the defects of the prior art, the utility model provides a powder filtering device for pharmaceutical production. Through this design, it effectively solves the problem that during the sieving process of conventional drug powders, the over-sized drug powder particles cannot be processed in time, the large particle drug powders cannot be processed in the screening cavity, which easily causes the screening holes to be blocked and results in low powder screening efficiency.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: The utility model includes a base, a filter cylinder is fixedly connected to the upper end of the base, a feed inlet is opened on the side of the filter cylinder, a filter cavity is connected to the feed inlet, a first sieve plate is fixedly connected to the lower end of the filter cavity, a spiral feeder is rotatably connected to the first sieve plate, a second sieve plate is matched with the upper end of the spiral feeder, the second sieve plate is fixedly connected to the filter cylinder, the second sieve plate is located above the feed inlet, and a discharge cavity communicated with the filter cavity is arranged on the base.

[0005] Preferably, the spiral feeder includes a conical connecting block, a spiral feeding rod is fixedly connected to the upper end of the connecting block, a sleeve is matched with the outside of the spiral feeding rod, the sleeve is fixedly connected to the second sieve plate, a spiral groove matched with the spiral feeding rod is fixedly connected to the side of the connecting block, and a shifting rod is matched with the lower end of the spiral groove, and the shifting rod is located above the first sieve plate.

[0006] Preferably, the front side of the shifting rod is a wedge-shaped inclined surface, and a brush hair is fixedly connected to the rear side of the shifting rod.

[0007] Preferably, a connecting cover is fixedly connected to the lower end of the sleeve, and the connecting cover is located around the connecting block.

[0008] Preferably, the upper surface of the spiral groove is an inclined surface that is lower on the inner side and higher on the outer side.

[0009] Preferably, the bottom of the discharge chamber is cleaned forward, and a card slot is provided on the base, and the card slot is located below the discharge chamber.

[0010] Compared with the prior art, the outstanding advantages of the present invention are:

[0011] In the present invention, a second sieve plate and a first sieve plate are installed up and down in the screening chamber. The spiral feeder conveys the large-particle medicinal powder on the first sieve plate to the second sieve plate, avoiding the influence of large-particle medicinal powder on the screening efficiency of the first sieve plate. At the same time, the stirring rod in the spiral feeder has a cleaning effect on the sieve holes of the first sieve plate, effectively avoiding the problem of sieve hole blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the sectional axonometric structure of the filter cartridge of the present invention.

[0014] Figure 3 It is a schematic diagram of the sectional front structure of the filter cartridge of the present invention.

[0015] Figure 4 It is a schematic diagram of the base structure of the present invention.

[0016] Reference numerals in the drawings: 1, base; 2, filter cartridge; 3, feed inlet; 4, filtration chamber; 5, first sieve plate; 6, second sieve plate; 7, discharge chamber; 8, connecting block; 9, spiral feeding rod; 10, sleeve; 11, spiral groove; 12, stirring rod; 13, connecting cover; 14, card slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to the attached Figures 1-4 , a pharmaceutical powder filtering device in this embodiment: including a base 1, the upper end of the base 1 is fixedly connected with a filter cartridge 2, a feed inlet 3 is opened on the side of the filter cartridge 2, a filtration chamber 4 is connected at the feed inlet 3, the lower end of the filtration chamber 4 is fixedly connected with a first sieve plate 5, a spiral feeder is rotatably connected on the first sieve plate 5, the upper end of the spiral feeder is fitted with a second sieve plate 6, the second sieve plate 6 is fixedly connected with the filter cartridge 2, the second sieve plate 6 is located above the feed inlet 3, and a discharge chamber 7 communicating with the filtration chamber 4 is provided on the base 1.

[0019] The size of the base 1 is larger than that of the filter cartridge 2. Four adjustable feet are provided at the bottom of the base 1. The large-size design of the base 1 can provide stable support for the filter cartridge 2, ensuring the stability of the device during the filtering operation. The feed inlet 3 is located on the side of the filter cartridge 2. The powder to be filtered enters the filtering chamber 4 from the position of the feed inlet 3. Under the action of gravity, the powder will fall onto the first sieve plate 5 below the filter opening. After passing through the first sieve plate 5, the smaller powder will enter the discharge chamber 7 and flow out, while the larger powder particles will remain on the upper end of the first sieve plate 5. To prevent excessive retention of powder particles on the first sieve plate 5, a screw feeder is designed on the first sieve plate 5. The screw feeder conveys the powder particles on the first sieve plate 5 upward. The powder particles on the first sieve plate 5 enter the second sieve plate 6 through the screw feeder. The second sieve plate 6 is also provided with sieve holes. The second sieve plate 6 can block the larger powder particles and at the same time sieve out the smaller powder particles downward, screening out the small-particle powder carried out by the screw feeder again to avoid powder waste. The first sieve plate 5 and the second sieve plate 6 are respectively located above and below the feed inlet 3. The lower first sieve plate 5 functions to screen the powder, and the upper second sieve plate 6 is used for storing the large particles after screening, ensuring the continuous operation of the first sieve plate 5. The large-particle drugs are conveyed between the first sieve plate 5 and the second sieve plate 6 through the screw feeder.

[0020] The screw feeder includes a conical connecting block 8. A screw feeding rod 9 is fixedly connected to the upper end of the connecting block 8. A sleeve 10 is fitted on the outer side of the screw feeding rod 9. The sleeve 10 is fixedly connected to the second sieve plate 6. A spiral groove 11 that cooperates with the screw feeding rod 9 is fixedly connected to the side of the connecting block 8. The lower end of the spiral groove 11 is fitted with a dial rod 12, and the dial rod 12 is located above the first sieve plate 5.

[0021] ​The connecting block 8 inside the spiral feeder is located above the first sieve plate 5. The connecting block 8 is in contact with the first sieve plate 5. A driving shaft is installed on the connecting block 8. The driving shaft is rotatably connected to the first sieve plate 5. The lower end of the driving shaft is located on the base 1. Inside the base 1, there is a motor and a reducer that drive the driving shaft to rotate. The driving shaft rotates in a low-speed and one-way manner inside the base 1. The rotation of the driving shaft drives the connecting block 8 to rotate. The connecting block 8 drives the thread groove, the lever 12, and the spiral feeding rod 9 to rotate synchronously. The outer end of the lever 12 is closely attached to the inner wall of the filtering cavity 4. The bottom surface of the lever 12 is in contact with the first sieve plate 5. The lever 12 is a smooth plane with a higher outer side and a lower inner side. When the lever 12 rotates while in contact with the first sieve plate 5, the lever 12 will gather the large-particle medicinal powder on the first sieve plate 5 at the front side of the lever 12. Under the mutual extrusion of the large-particle medicinal powder, a part of the large-particle medicinal powder will gather at the connection between the lever 12 and the thread groove. At the same time, under the relative rotation of the thread groove and the lever 12, the large-particle medicinal powder will move upward along the thread groove. The upper end of the thread groove is seamlessly connected to the spiral feeding rod 9. The spiral feeding rod 9 can convey the large-particle medicinal powder upward. A sleeve 10 is provided on the periphery of the spiral conveying rod. The sleeve 10 is closely attached to the periphery of the spiral conveying rod. The sleeve 10 can prevent the large-particle medicinal powder from falling during the upward conveyance. After being conveyed to the uppermost section, the medicinal powder falls onto the second sieve plate 6 from the top end of the spiral feeding rod 9 under the action of inertia and gravity.

[0022] Further, in order for the lever 12 to easily scoop up the large-particle medicinal powder on the first sieve plate 5, one side of the rotation direction of the lever 12 is set as an inclined surface to avoid pushing away the large-particle medicinal powder when contacting it. A brush is installed on the other side of the lever 12. The brush inclines downward. During the rotation of the lever 12, the brush can clean the sieve holes of the first sieve plate 5 to avoid blockage of the sieve holes.

[0023] The connecting shaft at the lower end of the sleeve 10 is also a conical structure. The connecting shaft is located outside the spiral groove 11. The spiral groove 11 is spirally wound around the connecting block 8. At the same time, to prevent the large-particle medicinal powder in the spiral groove 11 from falling, the inner side of the spiral groove 11 is lower than the outer side of the spiral groove 11. When conveying the large-particle medicinal powder, the large-particle medicinal powder is closely attached to the outer wall of the connecting block 8 to prevent the large-particle medicinal powder from being thrown out due to centrifugal force.

[0024] Further, to facilitate the collection of the filtered medicinal powder at the base 1, a card slot 14 is opened at the bottom of the discharge cavity 7. The collection box for storing the medicinal powder can be stuck in the card slot 14 to ensure that the medicinal powder does not fall on the side of the collection box and avoid waste of the medicinal powder.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pharmaceutical powder filtration device for pharmaceutical production, characterized in that: It includes a base (1), a filter cylinder (2) is fixedly connected to the upper end of the base (1), a feed inlet (3) is formed on the side of the filter cylinder (2), a filter chamber (4) is connected at the feed inlet (3), a first sieve plate (5) is fixedly connected to the lower end of the filter chamber (4), a screw feeder is rotatably connected to the first sieve plate (5), the upper end of the screw feeder is fitted with a second sieve plate (6), the second sieve plate (6) is fixedly connected to the filter cylinder (2), the second sieve plate (6) is located above the feed inlet (3), and a discharge chamber (7) communicating with the filter chamber (4) is provided on the base (1).

2. The pharmaceutical powder filtering device according to claim 1, wherein: The screw feeder includes a conical connecting block (8), a screw feeding rod (9) is fixedly connected to the upper end of the connecting block (8), a sleeve (10) is fitted on the outer side of the screw feeding rod (9), the sleeve (10) is fixedly connected to the second sieve plate (6), a spiral groove (11) cooperating with the screw feeding rod (9) is fixedly connected to the side of the connecting block (8), a lever (12) is fitted at the lower end of the spiral groove (11), and the lever (12) is located above the first sieve plate (5).

3. A pharmaceutical powder filtration device according to claim 2, characterized in that: The front side of the lever (12) is a wedge-shaped inclined surface, and a brush is fixedly connected to the rear side of the lever (12).

4. The pharmaceutical powder filtration device according to claim 2, characterized in that: A connecting cover (13) is fixedly connected to the lower end of the sleeve (10), and the connecting cover (13) is located around the connecting block (8).

5. A pharmaceutical production powder filtering device according to claim 2 or 4, characterized in that: The upper surface of the spiral groove (11) is an inclined surface that is lower on the inner side and higher on the outer side.

6. The pharmaceutical powder filtering device according to claim 1, characterized in that: The bottom of the discharge chamber (7) is cleaned forward, and a card slot (14) is provided on the base (1), and the card slot (14) is located below the discharge chamber (7).

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