Dry granulation system

Abstract

The utility model discloses a dry granulation system which comprises a feeding shell, a feeding screw arranged in the feeding shell, a granulator shell, an upper press roll and a lower press roll, the upper press roll and the lower press roll are arranged in the granulator shell, a collecting cover is arranged in the granulator shell, and the upper press roll and the lower press roll are located on the inner side of the collecting cover. A first material suction component and a second material suction component are arranged on the collecting cover, the first material suction component is located above the feeding shell, and the second material suction component is located below the lower pressing roller. The utility model has the advantages that the structure is simple, leaked materials can be collected, the waste is reduced, the health of operators is prevented from being influenced, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of food and medicine packaging machinery, in particular to a dry granulation system. Background Art

[0002] Dry granulation is to mix drugs, fillers, lubricants and other auxiliary materials, and then use rollers to press the mixture into uniform and qualified tablets, which are then crushed by crushing knives, granulated by granulating knives, and sieved by granulating screens and sieving machines to obtain qualified materials. When the feed screw of the existing dry granulator feeds and extrude powder materials, due to the characteristics of material fluidity, part of the powder materials in the roller triangle area (the area between the feed screw, the upper roller and the lower roller) will be squeezed out through the gap between the sealing block and the roller and accumulated behind the upper roller, and part of the materials will enter the qualified materials on the granulating screen through the gap between the lower roller and the baffle plate, resulting in poor granulation rate.

[0003] When the upper and lower rollers are tableting, the force between the molecules when the powder is squeezed will cause the powder materials to stick together to obtain qualified tablets. At the same time, some materials will also stick to the surface of the roller. The surface of the rollers on the market has texture. After being squeezed, some powder materials will also stick to the grooves of the roller texture due to static electricity. The roller will bring part of the material to the rear end of the roller after rotation. The sealing block in contact with the roller will scrape off all the bonded powder materials and drop them into the blind spot at the rear end of the roller. The longer the equipment runs, the more materials accumulate. This part of the material cannot be effectively utilized and is often abandoned as waste when the equipment is cleaned, resulting in waste of raw materials. At the same time, this part of the material is easy to overflow into the air when the equipment is opened for cleaning, and it will affect the health of the operators after being absorbed by the human body. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a dry granulation system which has a simple structure and can collect leaked materials, reduce waste, and avoid affecting the health of operators.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A dry granulation system comprises a feeding shell, a feeding screw arranged in the feeding shell, a granulator shell, and an upper pressing roller and a lower pressing roller arranged in the granulator shell, wherein a collecting cover is arranged in the granulator shell, the upper pressing roller and the lower pressing roller are located inside the collecting cover, and a first material suction component and a second material suction component are arranged on the collecting cover, wherein the first material suction component is located above the feeding shell, and the second material suction component is located below the lower pressing roller.

[0007] As a further improvement of the above technical solution: the collecting cover is detachably connected to the granulator housing.

[0008] As a further improvement of the above technical solution: a plurality of connecting ears are provided on the collecting cover, and the connecting ears are connected to the granulator housing through threaded fasteners.

[0009] As a further improvement of the above technical solution: a protective hole plate is provided at the entrance of the second suction component.

[0010] As a further improvement of the above technical solution: the dry granulation system further includes a screening machine, the screening machine is provided with a first vacuum feeding component, and the first suction component and the second suction component are both connected to the first vacuum feeding component.

[0011] As a further improvement of the above technical solution: the screening machine is provided with a first discharge port at the top and a second discharge port at the bottom, the first discharge port is connected to a first collecting container, and the second discharge port is connected to a second collecting container.

[0012] As a further improvement of the above technical solution: a feeding hopper is provided on the feeding shell, a second vacuum feeding component is provided on the feeding hopper, and the second collecting container is connected to the second vacuum feeding component.

[0013] Compared with the prior art, the advantages of the present invention are as follows: in the dry granulation system disclosed in the present invention, during operation, when the powder is tableted, part of the material will be adsorbed in the grooves of the upper and lower pressing rollers due to static electricity, and at the same time, part of the material will adhere to the surfaces of the upper and lower pressing rollers. When the upper pressing roller rotates counterclockwise, the sealing block in the feeding shell will scrape off the material adhered to the upper pressing roller, and the material will fall into the triangular area between the feeding shell and the blind area of ​​the upper pressing roller for accumulation. The material in the grooves of the lower pressing roller will rotate clockwise with the lower pressing roller, and the material will adhere to the surface of the upper and lower pressing rollers due to its own Gravity will fall on the lower part of the collecting hood. When the feeding screw extrude the powder material, due to the fluidity characteristics of the powder itself, part of the material will overflow from the gap between the triangular area of ​​the pressure roller and the sealing block, and accumulate in the triangular area between the upper pressure roller and the feeding shell. Another part of the material will also fall to the lower part of the collecting hood by its own gravity. The first suction component and the second suction component on the collecting hood can be used to absorb and collect the leaked materials in the two places respectively, reducing waste and avoiding absorption by operators during subsequent equipment cleaning. The structure is simple and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the dry granulation system of the utility model.

[0015] Figure 2 yes Figure 1 A partial enlarged view of .

[0016] The symbols in the figure represent:

[0017] 1. Feeding shell; 11. Feed hopper; 12. Second vacuum feeding component; 13. Sealing block; 2. Feeding screw; 3. Granulator shell; 4. Upper pressure roller; 5. Lower pressure roller; 6. Collecting cover; 61. First suction component; 62. Second suction component; 63. Connecting ear; 7. Screening machine; 71. First vacuum feeding component; 72. First discharge port; 73. Second discharge port; 74. First collecting container; 75. Second collecting container; 76. Multi-way valve. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 to Figure 2An embodiment of the dry granulation system of the utility model is shown. The dry granulation system of this embodiment includes a feeding shell 1, a feeding screw 2 arranged in the feeding shell 1, a granulator shell 3, and an upper pressing roller 4 and a lower pressing roller 5 arranged in the granulator shell 3. A collecting cover 6 is provided in the granulator shell 3, and the upper pressing roller 4 and the lower pressing roller 5 are located on the inner side of the collecting cover 6. A first suction component 61 and a second suction component 62 are provided on the collecting cover 6. The first suction component 61 is located above the feeding shell 1, and the second suction component 62 is located below the lower pressing roller 5.

[0023] In the dry granulation system of this embodiment, during operation, when the powder is compressed into tablets, part of the material will be adsorbed in the grooves of the upper pressing roller 4 and the lower pressing roller 5 due to static electricity, and at the same time, part of the material will adhere to the surfaces of the upper pressing roller 4 and the lower pressing roller 5. When the upper pressing roller 4 rotates counterclockwise, the sealing block 13 in the feeding shell 1 will scrape off the material adhered to the upper pressing roller 4, and the material will fall into the triangular area between the feeding shell 1 and the blind area of ​​the upper pressing roller 4 for accumulation. The material in the grooves of the lower pressing roller 5 will rotate clockwise with the lower pressing roller 5, and the material will fall into the collecting cover 6 due to its own gravity. At the lower part, when the feeding screw 2 squeezes the powder material, due to the fluidity of the powder itself, part of the material will overflow from the gap between the triangular area of ​​the pressure roller and the sealing block 13, and will also accumulate in the triangular area between the upper pressure roller 4 and the feeding shell 1. Another part of the material will also fall to the lower part of the collecting cover 6 by its own gravity. The first suction component 61 and the second suction component 62 on the collecting cover 6 can be used to adsorb and collect the leaked materials in the two places respectively, reducing waste and avoiding absorption by operators during subsequent equipment cleaning. The structure is simple and effective. Among them, the first suction component 61 and the second suction component 62 are preferably material guns, or simple hard suction pipes to reduce costs.

[0024] Furthermore, in the present embodiment, the collecting cover 6 is detachably connected to the granulator housing 3 (specifically, on the front panel of the granulator housing 3 ), so as to facilitate the installation and maintenance of the collecting cover 6 .

[0025] As a preferred embodiment, the collecting cover 6 is provided with a plurality of connecting ears 63, and the connecting ears 63 are connected to the granulator housing 3 by threaded fasteners, which has a simple and reliable structure and is easy to install and disassemble. Of course, in other embodiments, a detachable connection can also be achieved by means of buckles, locks, etc.

[0026] Furthermore, in this embodiment, a protective orifice plate (not shown in the figure) is provided at the entrance of the second suction component 62. Since the second suction component 62 is located below the lower pressure roller 5, in order to prevent the material with a relatively large particle size from falling and blocking the entrance of the second suction component 62, a protective orifice plate is provided at the entrance of the second suction component 62, which further improves reliability and does not affect the normal suction of the second suction component 62.

[0027] Furthermore, in this embodiment, the dry granulation system further includes a sieving machine 7, on which a first vacuum feeding component 71 is provided, and the first suction component 61 and the second suction component 62 are both connected to the first vacuum feeding component 71. Preferably, the first suction component 61, the second suction component 62 and the first vacuum feeding component 71 are connected through a multi-way valve 76. The first vacuum feeding component 71 and the multi-way valve 76 are opened, and the materials in the corresponding areas of the first suction component 61 and the second suction component 62 are fed into the sieving machine 7 by the suction force formed by the negative pressure, and the collected materials are screened by the different mesh sizes of the sieves provided in the sieving machine 7 for subsequent reuse, which has a reasonable and effective structure.

[0028] Furthermore, in this embodiment, the sieving machine 7 is provided with a first discharge port 72 at the top and a second discharge port 73 at the bottom, the first discharge port 72 is connected to a first collecting container 74 (such as a collecting box, a collecting box, etc.), and the second discharge port 73 is connected to a second collecting container 75 (such as a collecting bucket, a collecting bucket, etc.). The collected materials are screened by the different mesh sizes of the sieves provided in the sieving machine 7, and the unusable large particles will be screened by the sieve at the top of the sieving machine 7 and fall into the first collecting container 74 through the first discharge port 72 at the top, and the reusable fine powder will be screened by the remaining sieves and fall into the second collecting container 75 through the second discharge port 73, so as to be reused later, and the structure is reasonable and effective.

[0029] Furthermore, in this embodiment, a feed hopper 11 is provided on the feeding housing 1, a second vacuum feeding component 12 is provided on the feeding hopper 11, and the second collecting container 75 is connected to the second vacuum feeding component 12. When the second vacuum feeding component 12 is turned on, the fine powder material in the second collecting container 75 can be fed to the feed hopper 11 through the suction force formed by the negative pressure, and then fall into the feeding housing 1, and the material is fed by the feeding screw 2 to continue the tableting production, and the cycle is repeated.

[0030] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A dry granulation system, comprising a feeding housing (1), a feeding screw (2) arranged in the feeding housing (1), a granulator housing (3), and an upper pressing roller (4) and a lower pressing roller (5) arranged in the granulator housing (3), characterized in that: A collecting cover (6) is provided inside the granulator housing (3); the upper pressure roller (4) and the lower pressure roller (5) are located inside the collecting cover (6); a first material suction component (61) and a second material suction component (62) are provided on the collecting cover (6); the first material suction component (61) is located above the feeding housing (1), and the second material suction component (62) is located below the lower pressure roller (5).

2. The dry granulation system according to claim 1, characterized in that: The collecting cover (6) is detachably connected to the granulator housing (3).

3. The dry granulation system according to claim 2, characterized in that: The collecting cover (6) is provided with a plurality of connecting ears (63), and the connecting ears (63) are connected to the granulator housing (3) via threaded fasteners.

4. The dry granulation system according to claim 1, characterized in that: A protective orifice plate is provided at the inlet of the second material suction component (62).

5. The dry granulation system according to any one of claims 1 to 4, characterized in that: It also comprises a screening machine (7), on which a first vacuum feeding component (71) is provided, and the first suction component (61) and the second suction component (62) are both connected to the first vacuum feeding component (71).

6. The dry granulation system according to claim 5, characterized in that: The screening machine (7) is provided with a first discharge port (72) at the top and a second discharge port (73) at the bottom. The first discharge port (72) is connected to a first collecting container (74), and the second discharge port (73) is connected to a second collecting container (75).

7. The dry granulation system according to claim 6, characterized in that: The feeding shell (1) is provided with a feeding hopper (11), the feeding hopper (11) is provided with a second vacuum feeding component (12), and the second collecting container (75) is connected to the second vacuum feeding component (12).

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