Particle screening equipment

Abstract

The utility model provides particle screening equipment, which comprises a lower cavity, a lower cavity, a lower cavity, a lower cavity, a lower cavity, an upper cavity, an upper cavity and a lower cavity, and the top of the lower cavity is matched with a screen rotating along the axis; the upper cavity is detachably matched with the top of the lower cavity, and an air inlet channel is formed in the top of the upper cavity in a penetrating mode; the guide cylinder is matched with the air inlet channel and is rotationally arranged along the axis of the guide cylinder, the top of the guide cylinder extends out of the top of the upper cavity and is rotationally connected to the bottom end of the air inlet pipeline, the lower portion of the guide cylinder is located in the upper cavity, and a bottom plate provided with a plurality of flow dividing holes is arranged at the bottom of the guide cylinder; the air supply pipes correspond to the flow dividing holes, the top ends of the air supply pipes are connected with the flow dividing holes so as to be communicated with the flow guide cylinder, the bottom ends of the air supply pipes are used for supplying air to the screen, and the air supply pipes are spiral. According to the equipment, the screen is rotated and is matched with a spiral rotating air supply mode to blow air to the screen so as to realize screening, good blanking efficiency can be guaranteed, and the equipment has a drying effect so as to facilitate dispersion of agglomerated particles.

Description

Technical Field

[0001] The present application relates to drug preparation technology, and in particular to a particle screening device. Background Art

[0002] After granulation is completed, some particles will agglomerate due to the influence of humidity. If screening is not performed, the subsequent process will be affected. In the existing process, screening is performed through a screen. In order to ensure that the screen is unobstructed, the sun will be cleaned continuously to avoid affecting the material dropping efficiency. However, this method requires the screen to be scraped or vibrated. Scraping will cause adhesion. Although vibration can solve the problem of screen pass rate to a certain extent, it is not easy to disperse the agglomerated particles through screening. Therefore, it is necessary to improve it. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies of the prior art, the present application provides a particle screening device, which can ensure a good screening and dropping efficiency and facilitate the dispersion of agglomerated particles.

[0004] In order to achieve the above purpose, the utility model adopts the following technologies:

[0005] A particle screening device, comprising:

[0006] The lower cavity has a screen mesh rotating along the axis on the top thereof, and the main body of the screen mesh is located in the lower cavity;

[0007] The upper cavity is detachably matched with the top of the lower cavity, and an air inlet passage is provided through the top of the upper cavity;

[0008] The guide tube is matched with the air inlet passage, the guide tube is rotatably arranged along its own axis, the top of the guide tube extends out of the top of the upper cavity, and is rotatably connected to the bottom end of the air inlet pipe, the lower part of the guide tube is located in the upper cavity, and the bottom of the guide tube has a bottom plate with a plurality of diversion holes;

[0009] There are multiple air supply pipes, which are arranged corresponding to the diversion holes. The top end of the air supply pipe is connected to the diversion hole to communicate with the guide tube, and the bottom end of the air supply pipe is used to supply air to the screen. The air supply pipe is spiral.

[0010] Furthermore, a lower mating platform is installed on the top of the lower cavity, and a first gear ring is rotatably mounted on the lower mating platform. The screen is detachably mounted on the inner wall of the first gear ring. The first gear ring is meshed with the first gear, and the first gear is connected to the output shaft of the first motor. The first motor is mounted on the outer wall of the lower cavity.

[0011] Furthermore, the inner wall of the first toothed ring is provided with at least two installation grooves, the peripheral side of the screen has protrusions with the same number as the installation grooves, and the screen is installed on the first toothed ring by the protrusions fitting in the installation grooves.

[0012] Furthermore, the mounting groove is formed by being recessed outward from the inner wall of the first gear ring.

[0013] Furthermore, the upper cavity has a top plate, the air intake passage passes through the top plate, an upper matching platform arranged outside the air intake passage is provided on the top plate, and the top of the guide tube is rotatably matched with the upper matching platform.

[0014] Furthermore, a second gear ring is connected to the peripheral side of the top of the guide tube, the second gear ring is meshed with the second gear, the second gear is connected to the output shaft of the second motor, and the second motor is installed on the top plate.

[0015] The beneficial effects of the utility model are:

[0016] There is no need to vibrate or scrape the screen. Screening is achieved by rotating the screen and blowing air on it in combination with spiral rotation air supply, which can ensure better material dropping efficiency and has a drying effect to facilitate the dispersion of agglomerated particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the installation structure of the screen and the first gear ring of an embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of the installation structure of the guide tube and the second gear ring in an embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0021] The present application embodiment provides a particle screening device, such as Figure 1-Figure 3 As shown, it includes a lower cavity 1, an upper cavity 2, a screen 31, a guide tube 4,

[0022] The top of the lower cavity 1 is equipped with a screen 31 that rotates along the axis, and the main body of the screen 31 is located in the lower cavity 1. Specifically, the screen 31 is installed and rotated in the following manner: a lower matching platform 10 is installed on the top of the lower cavity 1, and a first gear ring 3 is rotatably matched on the lower matching platform 10, and the screen 31 is detachably installed on the inner wall of the first gear ring 3, the first gear ring 3 is meshed with the first gear 33, and the first gear 33 is connected to the output shaft of the first motor 34, and the first motor 34 is installed on the outer wall of the lower cavity 1. At least two installation grooves 32 are provided on the inner wall of the first gear ring 3, and the installation grooves 32 are formed by being recessed outward from the inner wall of the first gear ring 3. The circumferential side of the screen 31 has protrusions that are the same in number as the installation grooves 32, and the screen 31 is installed on the first gear ring 3 by the protrusions matching the installation grooves 32, so that the screen 31 can be detachably installed on the first gear ring 3 and can rotate with the first gear ring 3. The first motor 34 drives the first gear 33 to rotate to act on the first gear ring 3, so that the first gear ring 3 and the screen 31 rotate together on the lower matching platform 10.

[0023] The upper cavity 2 is detachably fitted on the top of the lower cavity 1 . When the filter screen 31 needs to be taken out, the upper cavity 2 and the lower cavity 1 can be separated to facilitate the removal of the filter screen 31 .

[0024] The bottom side of the upper cavity 2 is provided with a feed port 22 for connecting with a feed channel.

[0025] An air intake passage is provided through the top of the upper cavity 2, and the guide tube 4 cooperates with the air intake passage. The guide tube 4 is rotatably arranged along its own axis, and the top of the guide tube 4 extends out of the top of the upper cavity 2 and is rotatably connected to the bottom end of the air intake pipe 5. The lower part of the guide tube 4 is located in the upper cavity 2, and the bottom of the guide tube 4 has a bottom plate with a plurality of diversion holes 43; there are a plurality of air supply pipes 44, which are arranged corresponding to the diversion holes 43, and the top end of the air supply pipe 44 is connected to the diversion holes 43 to communicate with the guide tube 4, and the bottom end of the air supply pipe 44 is used to supply air to the screen 31, and the air supply pipe 44 is spiral.

[0026] Specifically, the upper cavity 2 has a top plate 20, the air inlet passage passes through the top plate 20, and an upper matching platform 21 arranged outside the air inlet passage is provided on the top plate 20, and the top of the guide tube 4 is rotatably matched with the upper matching platform 21. A second gear ring 40 is connected to the circumferential side of the top of the guide tube 4, and the second gear ring 40 is meshed with a second gear 41, and the second gear 41 is connected to the output shaft of a second motor 42, and the second motor 42 is installed on the top plate 20. The second gear 41 is driven to rotate by the second motor 42 to act on the rotation of the second gear ring 40, so that the entire guide tube 4 and the air supply pipe 44 are rotated accordingly.

[0027] The rotation of the screen 31 can prevent the particles from gathering in one place, and reduce the probability of particles blocking the mesh of the screen 31. At the same time, the air can be supplied to the screen 31 through the spiral air supply pipes 44, which can not only supply air downward, but also help to blow away the residual powder in the granulation process, and can also dehumidify and dry the particles, which is beneficial for the dispersion of agglomerated particles. In addition, because the air is supplied by the rotating spiral, it also has the effect of turning over the particles in the screen 31, so as to improve the drop efficiency.

[0028] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A particle screening device, characterized in that: include: The lower cavity (1) has a screen (31) on its top that rotates along an axis, and the main body of the screen (31) is located in the lower cavity (1); The upper cavity (2) is detachably mounted on the top of the lower cavity (1), and an air intake passage is provided through the top of the upper cavity (2); A guide tube (4) is matched with the air inlet passage, the guide tube (4) is rotatably arranged along its own axis, the top of the guide tube (4) extends out of the top of the upper cavity (2) and is rotatably connected to the bottom of the air inlet pipe (5), the lower part of the guide tube (4) is located in the upper cavity (2), and the bottom of the guide tube (4) has a bottom plate with a plurality of diversion holes (43); There are a plurality of air supply pipes (44) which are arranged corresponding to the diversion holes (43). The top end of the air supply pipe (44) is connected to the diversion hole (43) to communicate with the guide tube (4). The bottom end of the air supply pipe (44) is used to supply air to the screen (31). The air supply pipe (44) is spiral-shaped.

2. The particle screening device according to claim 1, characterized in that: A lower mating platform (10) is mounted on the top of the lower cavity (1), a first gear ring (3) is rotatably mounted on the lower mating platform (10), a screen (31) is detachably mounted on the inner wall of the first gear ring (3), the first gear ring (3) is meshed with a first gear (33), the first gear (33) is connected to an output shaft of a first motor (34), and the first motor (34) is mounted on the outer wall of the lower cavity (1).

3. The particle screening device according to claim 2, characterized in that: The inner wall of the first toothed ring (3) is provided with at least two mounting grooves (32), the peripheral side of the screen (31) is provided with protrusions whose number is the same as the mounting grooves (32), and the screen (31) is mounted on the first toothed ring (3) by the protrusions fitting into the mounting grooves (32).

4. The particle screening device according to claim 3, characterized in that: The mounting groove (32) is formed by being recessed outward from the inner wall of the first gear ring (3).

5. The particle screening device according to claim 1, characterized in that: The upper cavity (2) has a top plate (20), an air intake passage passes through the top plate (20), an upper matching platform (21) arranged outside the air intake passage is provided on the top plate (20), and the top of the guide tube (4) is rotatably matched with the upper matching platform (21).

6. The particle screening device according to claim 5, characterized in that: A second gear ring (40) is connected to the top peripheral side of the guide tube (4); the second gear ring (40) is meshed with a second gear (41); the second gear (41) is connected to an output shaft of a second motor (42); and the second motor (42) is mounted on the top plate (20).

7. The particle screening device according to claim 1, characterized in that: The bottom side of the upper cavity (2) is provided with a feed opening (22) for connecting to a feed channel.

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