Discharging device of tablet press

Abstract

The utility model discloses a blanking device of a tablet press, which comprises a mounting rack, a switching device, a powder blanking device and a particle blanking device, the switching device is arranged on the mounting rack, and the switching end of the switching device is positioned above a tabletting area; the powder discharging device and the particle discharging device are arranged at the two switching ends of the switching device correspondingly. The powder discharging device and the particle discharging device are arranged at the two switching ends of the switching device respectively, the powder discharging device and the particle discharging device can be switched to the position above a tabletting area according to different material characteristics, the vibrator in the powder discharging device is used for conducting vibration discharging on powder materials, and the wall hanging situation of the powder materials is reduced; the spiral discharging device in the particle discharging device is used for conducting spiral conveying discharging on the granular materials, the situation that the granular materials are blocked during discharging is reduced, and therefore targeted discharging operation can be conducted according to the characteristics of the materials.

Description

Technical Field

[0001] The utility model relates to the technical field of facilities supporting a tablet press, and particularly relates to a feeding device for a tablet press. Background Art

[0002] The feeding device of a tablet press is one of the key components in the tablet pressing process. It is responsible for evenly, continuously and properly conveying materials from the hopper to the tablet pressing area to ensure the quality and production efficiency of tablets.

[0003] In related technologies, in order to ensure smooth feeding of materials, a vibrator is mostly arranged outside the hopper to prevent materials from accumulating in the hopper.

[0004] For example, a tablet press auxiliary feeding device with the application number CN202222127839.4 includes a tablet press hopper. An observation port is opened on the side of the tablet press hopper, and an observation mirror is fixedly installed inside the observation port. One side of the bottom of the tablet press hopper is fixedly connected with a vibration motor connection base, and a vibration motor is arranged on one side of the vibration motor connection base. In this tablet press auxiliary feeding device, by installing a vibration motor above the feeding port of the tablet press hopper and using vibration to assist feeding during the production of varieties with poor particle fluidity, the phenomenon of blockage at the feeding port of the hopper can be effectively avoided.

[0005] However, in the actual use process of the above patent, there are still some problems. For example, when the above patent is used for feeding powdery materials, the vibration method can effectively reduce the situation of powdery materials sticking to the wall and ensure smooth feeding. However, when feeding granular materials, since the phenomenon of granular materials sticking to the wall is rare and the blockage generally occurs at the feeding port, the effect of feeding granular materials by vibrating the vibrator is not good. Therefore, targeted feeding operations cannot be carried out according to the characteristics of the materials. Summary of the Invention

[0006] The utility model aims to solve at least one of the technical problems in the above technologies to a certain extent.

[0007] To achieve the above object, the first aspect of the present utility model provides a feeding device for a tablet press, comprising: a mounting frame, a switching device, a powder feeding device, and a granule feeding device. Among them, the switching device is arranged on the mounting frame, and the switching end of the switching device is located above the tablet pressing area; the powder feeding device and the granule feeding device are respectively arranged on two switching ends of the switching device; the powder feeding device includes a first hopper and a vibrator, wherein the first hopper is detachably arranged on one switching end of the switching device; the vibrator is arranged on the first hopper; the granule feeding device includes a second hopper and a screw feeder, wherein the second hopper is detachably arranged on the other switching end of the switching device; the working end of the screw feeder is arranged in the second hopper and extends downward to the discharge end.

[0008] In addition, the feeding device for a tablet press proposed above according to the present utility model may further have the following additional technical features:

[0009] As a further description of the above technical solution: the switching device includes a first driving motor and a rotating frame. Among them, the first driving motor is arranged on the mounting frame; the rotating frame is a V-shaped frame structure, and the folding angle of the rotating frame is connected to the output end of the first driving motor; the first hopper and the second hopper are respectively detachably arranged at both ends of the rotating frame.

[0010] As a further description of the above technical solution: fixing rings are respectively arranged at both ends of the rotating frame. The first hopper and the second hopper are respectively sleeved in the corresponding fixing rings and locked by bolts. For example, positioning holes are provided on the fixing rings, positioning ring grooves are provided on both the first hopper and the second hopper. When the first hopper and the second hopper are sleeved in the fixing rings, the locking bolts pass through the positioning holes and abut against the positioning ring grooves.

[0011] As a further description of the above technical solution: a first feed inlet is provided at the top of the side wall of the first hopper, a first discharge outlet that contracts towards the center is provided at the bottom of the first hopper, and a first switching valve is provided at the first discharge outlet.

[0012] As a further description of the above technical solution: a second feed inlet is provided at the top of the side wall of the second hopper, a straight cylindrical second discharge outlet that extends vertically downward is provided at the bottom of the second hopper, and a second switching valve is provided at the second discharge outlet.

[0013] As a further description of the above technical solution: The spiral feeder includes a second driving motor, a rotating shaft, and a spiral conveying blade. Among them, the second driving motor is arranged on the top of the second hopper; the rotating shaft is connected to the output end of the second driving motor and extends downward into the second discharge port; the spiral conveying blade is arranged on the rotating shaft and fits against the inner wall of the second discharge port.

[0014] As a further description of the above technical solution: The spiral conveying blade has a gradually changing pitch, and the pitch at the end close to the second driving motor is smaller than that at the other end, which can increase the contact area and friction force between the materials, and helps to improve the conveying efficiency and reduce the voids during the downward sliding of the materials in the case of less materials or when fine control of the feeding speed is required, thereby reducing the possibility of blockage.

[0015] According to the tablet press feeding device of the present invention, by respectively arranging the powder feeding device and the granule feeding device at the two switching ends of the switching device, it can be switched above the tablet pressing area according to different material characteristics. Moreover, the vibrator in the powder feeding device is used for vibrating the powder-like materials to reduce the situation of the powder-like materials sticking to the wall; the spiral feeder in the granule feeding device is used for spirally conveying and feeding the granule-like materials to reduce the situation of blockage when the granule-like materials are fed. Thus, targeted feeding operations can be carried out according to the characteristics of the materials.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0017] The above-mentioned and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0018] Figure 1 is a schematic structural diagram of a tablet press feeding device according to an embodiment of the present invention;

[0019] Figure 2 is a schematic internal structural diagram of a tablet press feeding device according to an embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of a switching device according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a spiral feeder according to an embodiment of the present invention;

[0022] As shown in the figure:

[0023] Mounting frame; 200, switching device; 210, first drive motor; 220, rotating frame; 221, fixing ring; 300, powder feeding device; 310, first hopper; 311, first feed inlet; 312, first discharge outlet; 313, first switching valve; 320, vibrator; 400, granular material feeding device; 410, second hopper; 411, second feed inlet; 412, second discharge outlet; 413, second switching valve; 420, screw feeder; 421, second drive motor; 422, rotating shaft; 423, screw conveyor blade. Detailed implementation mode

[0024] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0025] The tablet press feeding device according to the embodiments of the present invention will be described below with reference to the drawings.

[0026] As Figures 1 to 4 shown, the tablet press feeding device according to the embodiments of the present invention can realize the efficient and accurate feeding of powdery materials and granular materials, significantly improve the stability and production efficiency of the tablet pressing process, ensure the continuity and high quality of tablet production, and enhance the versatility and flexibility of the equipment.

[0027] A tablet press auxiliary feeding device with the application number CN202222127839.4 (hereinafter referred to as "this patent") includes a tablet press hopper. An observation port is opened on the side of the tablet press hopper, and an observation mirror is fixedly installed inside the observation port. One side of the bottom of the tablet press hopper is fixedly connected with a vibration motor connection base, and a vibration motor is connected to one side of the vibration motor connection base. By installing a vibration motor above the feeding port of the tablet press hopper, this tablet press auxiliary feeding device can use vibration to assist feeding during the production of varieties with poor particle fluidity, and can effectively avoid the phenomenon of particle blockage at the feeding port of the hopper.

[0028] When this patent feeds powdery materials, it can effectively reduce the adhesion of powdery materials on the inner wall of the tablet press hopper (i.e., the wall hanging phenomenon) and ensure the smooth feeding of powdery materials. However, for granular materials, the wall hanging phenomenon of granular materials is not much, and the main problem during the feeding process is blockage at the discharge end. When this patent feeds granular materials, through the vibration of the vibration motor, the feeding effect is average and it cannot achieve targeted feeding.

[0029] For the blanking device of the tablet press of the present utility model, by respectively arranging the powder blanking device 300 and the granule blanking device 400 on two switching ends of the switching device 200, it is possible to make a selection according to the characteristics of the material before blanking, that is, pour the powdery material into the powder blanking device 300 and the granular material into the granule blanking device 400, and through the switching of the switching device 200 (that is, drive the rotation of the rotating frame 220 by the first driving motor 210, so that the powder blanking device 300 or the granule blanking device 400 rotates into the tablet pressing area and performs the blanking operation), which has strong pertinence and flexibility.

[0030] Among them, when the powder blanking device 300 is blanking, relevant staff can pour the powdery material along the first feed port 311 into the first hopper 310, and by starting the vibrator 320, make the powdery material smoothly blank from the first discharge port 312.

[0031] When the granule blanking device 400 is blanking, relevant staff can pour the granular material along the second feed port 411 into the second hopper 410, and start the screw blanking device 420 (that is, drive the rotation of the rotating shaft 422 by the second driving motor 421, and the screw conveying blade 423 rotates following the rotating shaft 422, so as to realize the blanking transmission of the granular material), so that the granular material is blanked from the second discharge port 412.

[0032] In addition, when the screw blanking device 420 blanks the powdery material, due to the small particle size and large surface area of the powdery material, it is easy to adhere to each other or form agglomerates. Especially in the case of higher humidity or more fine powder in the powder, the finer powder particles are easily stuck in the gaps of the screw blanking device 420, resulting in blockage, especially when the rotation speed of the screw is insufficient or the fluidity of the material is poor. Therefore, through targeted design, when blanking the powdery material, it is better to blank it through the powder blanking device 300, and when blanking the granular material, it is better to blank it through the granule blanking device 400.

[0033] In summary, for the blanking device of the tablet press according to the embodiment of the present utility model, by respectively arranging the powder blanking device 300 and the granule blanking device 400 on two switching ends of the switching device 200, it can be switched above the tablet pressing area according to different material characteristics, and the vibrator 320 in the powder blanking device 300 is used for vibrating blanking of the powdery material to reduce the situation of the powdery material adhering to the wall; the screw blanking device 420 in the granule blanking device 400 is used for screw conveying blanking of the granular material to reduce the situation of blockage when the granular material is blanking. Therefore, it can perform targeted blanking operations according to the characteristics of the material.

[0034] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In the description of this specification, descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0036] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A tablet press unloading device, characterized in that: include: A mounting frame (100), a switching device (200), a powder feeding device (300) and a particle feeding device (400), wherein the switching device (200) is arranged on the mounting frame (100), and the switching end of the switching device (200) is located above the tablet pressing area; the powder feeding device (300) and the particle feeding device (400) are respectively arranged on two switching ends of the switching device (200); the powder feeding device (300) comprises a first hopper (310) and a vibrator (320), The first hopper (310) is detachably arranged on one switching end of the switching device (200); the vibrator (320) is arranged on the first hopper (310); the particle feeding device (400) comprises a second hopper (410) and a spiral feeder (420), wherein the second hopper (410) is detachably arranged on the other switching end of the switching device (200); and the working end of the spiral feeder (420) is arranged in the second hopper (410) and extends downward to the discharge end.

2. The tablet press unloading device according to claim 1, characterized in that: The switching device (200) comprises a first drive motor (210) and a rotating frame (220), wherein the first drive motor (210) is arranged on the mounting frame (100); the rotating frame (220) is a V-shaped frame structure, and the corner of the rotating frame (220) is connected to the output end of the first drive motor (210); the first hopper (310) and the second hopper (410) are respectively detachably arranged at two ends of the rotating frame (220).

3. The tablet press unloading device according to claim 2, characterized in that: Fixed rings (221) are respectively provided at both ends of the rotating frame (220); the first hopper (310) and the second hopper (410) are respectively sleeved in the corresponding fixed rings (221) and are locked by bolts.

4. The tablet press unloading device according to claim 1, characterized in that: A first feed port (311) is provided at the top of the side wall of the first hopper (310), a first discharge port (312) contracting toward the center is provided at the bottom of the first hopper (310), and a first switch valve (313) is provided at the first discharge port (312).

5. The tablet press unloading device according to claim 1, characterized in that: A second feed port (411) is provided at the top of the side wall of the second hopper (410), a second discharge port (412) in a straight cylindrical shape extending vertically downward is provided at the bottom of the second hopper (410), and a second switch valve (413) is provided at the second discharge port (412).

6. The tablet press unloading device according to claim 5, characterized in that: The spiral feeder (420) comprises a second drive motor (421), a rotating shaft (422) and a spiral transmission blade (423), wherein the second drive motor (421) is arranged on the top of the second hopper (410); the rotating shaft (422) is connected to the output end of the second drive motor (421) and extends downward into the second discharge port (412); the spiral transmission blade (423) is arranged on the rotating shaft (422) and fits against the inner wall of the second discharge port (412).

7. The tablet press unloading device according to claim 6, characterized in that: The spiral transmission blade (423) has a gradually changing pitch, and the pitch at one end close to the second drive motor (421) is smaller than that at the other end.

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