Powder suction device of tablet press

Abstract

The utility model discloses a powder suction device of a tablet press. The problem that a powder suction device in the prior art cannot adapt to different types of materials is solved. A powder suction device of a tablet press is used for a rotary tablet press and comprises a shell, a middle hole plate, a lower plate and a bottom plate. A cavity with an opening in one side is defined by the shell and the bottom plate. The upper edge and the lower edge of the opening are parallel, and C-shaped recesses are formed in the two side edges of the opening and used for limiting the punching disc of the tablet press to move in the direction perpendicular to the horizontal plane. And the middle hole plate and the lower plate are detachably and fixedly connected and seal the C-shaped recess. Through holes are formed in the middle hole plate and the bottom plate. And a dust collection pipe connecting hole is formed in the bottom plate. The mode that the middle-layer dust collection pore plate can be replaced is adopted, so that different middle-layer dust collection pore plates can be replaced corresponding to different materials, and suction and removal are more thorough.

Description

Technical Field

[0001] This application relates to the technical field of pharmaceutical machinery, and particularly relates to a powder suction device for a tablet press. Background Art

[0002] Rotary tablet presses are mainly used for processing tablets in the pharmaceutical industry, to press granular or powdery media into round, shaped or tablets with words, symbols or graphics, and are key equipment suitable for mass production. The working process of the tablet press includes feeding, metering, pre-pressing, main pressing and tablet discharging processes. Among them, the feeding and metering stages are related to the amount of material filling, and these two processes are both carried out in the feeder. When these two processes are in progress, there is a risk that the material will overflow from the feeder. In order to avoid the remaining of the overflowed material on the surface of the middle punch plate of the machine, a powder suction device for a tablet press is required to suck out the overflowed material to avoid contamination.

[0003] Traditional powder suction devices are composed of a powder suction head, a fixed bracket, screws, etc. The realization of the function depends on an external dust suction system, creating a negative pressure state inside the powder suction head, and then making its powder suction port as close as possible to the surface of the punch plate to achieve the purpose of sucking out the material. This structure not only has an unsatisfactory effect but also generally uses a welding process with high processing difficulty, and the suction of the material is not ideal, and the deformation of its structural parts is uncontrollable, such as perpendicularity, flatness of the contact surface with the punch plate, etc. Summary of the Utility Model

[0004] The embodiment of this application provides a powder suction device for a tablet press, which solves the problem that the existing powder suction device cannot adapt to different types of materials.

[0005] The embodiment of this application provides a powder suction device for a tablet press, which is used for a rotary tablet press and includes a housing, a middle hole plate, a lower plate and a bottom plate. The housing and the bottom plate enclose a cavity with an opening on one side; the upper and lower edges of the opening are parallel, and there are C-shaped depressions on both side edges of the opening for limiting the movement of the punch plate of the tablet press in the direction perpendicular to the horizontal plane. The middle hole plate and the lower plate are detachably and fixedly connected to seal the C-shaped depression. Through holes are provided on the middle hole plate and the bottom plate. A dust suction pipe connection hole is provided on the bottom plate.

[0006] In one embodiment, it further includes a cantilever, and the cantilever is fixedly arranged on the side of the housing opposite to the opening. One end of the cantilever is connected to the housing, and the other end is detachably and fixedly arranged on the frame of the tablet press.

[0007] In one embodiment, the middle hole plate includes various different models of through holes.

[0008] In one embodiment, the middle hole plate seals the upper bottom surface and the side surface of the C-shaped depression. The lower plate seals the lower bottom surface of the C-shaped depression.

[0009] In one embodiment, the C-shaped recess is a right-angled recess, which is adapted to the punching disc of the tablet press.

[0010] In one embodiment, the upper and lower edges of the opening are provided with a horizontal curvature for surrounding the punching disc of the tablet press.

[0011] The above at least one technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:

[0012] The appearance of the present application is more beautiful. It adopts an integrated structure and is assembled in a stacked manner at the bottom of the powder suction head. Such a design can make the appearance more beautiful and the corresponding dimensional accuracy more precise. By adopting the method of replacing the middle layer dust suction hole plate, different middle layer dust suction hole plates can be replaced according to different materials, so as to achieve more thorough suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0014] Figure 1 It is a structural diagram of a powder suction device of a tablet press in the prior art;

[0015] Figure 2 It is a structural diagram of a powder suction device of a tablet press in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0017] The following will describe in detail the technical solutions provided by the embodiments of the present application with reference to the drawings.

[0018] Schematic structure of a traditional powder suction device Figure 1 As shown, it is composed of a powder suction head, a fixed bracket, screws, etc. The realization of its function depends on an external dust suction system to create a negative pressure state inside the powder suction head, and then make its powder suction port as close as possible to the surface of the punching disc, so as to achieve the purpose of sucking materials. This structure not only has an unsatisfactory effect, but also generally uses a welding process, which is difficult to process. The suction of materials is not ideal, and the deformation of its structural parts is uncontrollable, such as perpendicularity, flatness of the attached surface with the punching disc, etc.

[0019] Figure 2 This is a structural diagram of a powder suction device for a tablet press in an embodiment of the present application, which includes a housing 1, a middle hole plate 2, a lower plate 3, and a bottom plate 4.

[0020] The housing and the bottom plate enclose a cavity with an opening on one side; the upper and lower edges of the opening are parallel, and there are C-shaped depressions on both side edges of the opening for limiting the movement of the tablet press punch plate in the direction perpendicular to the horizontal plane.

[0021] The middle hole plate and the lower plate are detachably and fixedly connected to seal the C-shaped depression. Through holes are provided on the middle hole plate and the bottom plate. A dust suction pipe connection hole is provided on the bottom plate.

[0022] For example, the structure of the present application uses aviation aluminum, eliminates the welded structure, and adopts a layered assembly form. After improvement, the device is more concise and beautiful.

[0023] In one of the embodiments, the middle hole plate includes various different models of through holes.

[0024] By replacing the middle hole plate with different models of through holes, different materials can be adapted.

[0025] For example, different middle hole plates are selected according to different materials to suck the materials. The connection by screws is simple and convenient. Due to the cantilever installation method, the middle hole plate and the middle punch plate can fit more closely, which is more accurate than the old powder suction head.

[0026] In one of the embodiments, it further includes a cantilever 5, which is fixedly arranged on the side of the housing opposite to the opening. One end of the cantilever is connected to the housing, and the other end is detachably and fixedly arranged on the tablet press frame.

[0027] For another example, the structure of the present application eliminates the bottom fixing method and adopts the lateral cantilever method, which improves the problem of inaccurate positioning of the punch plate.

[0028] The powder suction device of the prior art is integrally formed with the dust suction pipe, so the dust suction pipe is fixed by a clamp to fix the powder suction device.

[0029] However, in the present application, since the powder suction device and the dust suction pipe are detachable structures and are connected through the dust suction pipe connection hole provided on the bottom plate, the position of the powder suction device can be freely adjusted through the cantilever. The positioning between the powder suction device and the punch plate is more accurate.

[0030] In one of the embodiments, the middle hole plate seals the upper bottom surface and the side surface of the C-shaped depression. The lower plate seals the lower bottom surface of the C-shaped depression.

[0031] By installing the middle hole plate and the lower plate, the upper bottom surface, side surface and lower bottom surface of the C-shaped recess are sealed. The installation of the powder suction device is completed. Since the middle hole plate is provided with through holes for sucking material dust, the middle hole plate needs to be replaced according to different materials. Therefore, the middle hole plate and the lower plate are detachably fixedly connected together.

[0032] In one embodiment, the inside of the C-shaped recess is a right-angled recess. The right-angled recess is adapted to the punching die of the tablet press.

[0033] Since the punching die of the tablet press is a cylinder, the corners inside the C-shaped recess are right angles. The straight recess is adapted to the punching die of the tablet press so that the C-shaped recess can fit the punching die of the tablet press.

[0034] In one embodiment, the upper edge and the lower edge of the opening are provided with arcs in the horizontal direction for surrounding the punching die of the tablet press.

[0035] Since the punching die of the tablet press is a cylinder, preferably, the powder suction device has an arc in the horizontal direction. For example, the powder suction device surrounds the punching die of the tablet press within a range of 15° in the horizontal direction. This increases the efficiency of sucking material dust.

[0036] The above are only the embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A powder suction device for a tablet press, which is used for a rotary tablet press, and is characterized in that, It includes a housing, a middle hole plate, a lower plate and a bottom plate; The housing and the bottom plate enclose a cavity with an opening on one side; the upper edge and the lower edge of the opening are parallel, and there are C-shaped depressions on both side edges of the opening for limiting the movement of the punching disc of the tablet press in the direction perpendicular to the horizontal plane; The middle hole plate and the lower plate are detachably and fixedly connected to seal the C-shaped depression; Through holes are provided on the middle hole plate and the bottom plate; A dust suction pipe connection hole is provided on the bottom plate.

2. The powder suction device of the tablet press according to claim 1, characterized in that, It also includes a cantilever, and the cantilever is fixedly arranged on the side of the housing opposite to the opening; One end of the cantilever is connected to the housing, and the other end is detachably and fixedly arranged on the frame of the tablet press.

3. The powder suction device of the tablet press according to claim 1, characterized in that, The middle hole plate includes a variety of through holes with different models; 4. The powder suction device of the tablet press according to claim 1, characterized in that, The middle hole plate seals the upper bottom surface and the side surface of the C-shaped depression; The lower plate seals the lower bottom surface of the C-shaped depression.

5. The powder suction device according to claim 1, wherein The C-shaped depression is a right-angled depression inside; The right-angled depression is adapted to the punching disc of the tablet press.

6. The powder suction device of the tablet press according to claim 1, wherein The upper edge and the lower edge of the opening have a horizontal curvature for surrounding the punching disc of the tablet press.

Images