Dense bin structure for granulation production

Abstract

The utility model relates to the technical field of granulation, and provides a compact bin structure for granulation production, the compact bin structure comprises a shell, a compaction pipeline and an air blower, the shell is provided with a feed port and a material passing port; the compaction pipeline is connected to the shell, and an inner cavity of the compaction pipeline communicates with an inner cavity of the shell through the material passing opening. The compaction pipeline is connected with a compaction screw rod and a first motor, the compaction screw rod is located in the compaction pipeline and rotationally connected with the compaction pipeline, and the first motor is used for driving the compaction screw rod to rotate; a rotating shaft is rotationally connected into an inner cavity of the shell, a plurality of first cutters are arranged on the peripheral side of the rotating shaft, and a plurality of second cutters are arranged on the wall of the inner cavity of the shell; the shell is provided with a second motor, and the second motor is used for driving the rotating shaft to rotate; the air blower is connected to the shell and used for blowing materials into the compaction pipeline. The end, away from the shell, of the compaction pipeline is provided with a discharge port. The compaction bin has the effect of improving the density distribution uniformity of materials discharged by the compaction bin.

Description

Technical Field

[0001] This application relates to the field of granulation technology, and in particular, to a dense bin structure for granulation production. Background Art

[0002] A dense bin, also known as a compaction bin or a closed chamber bin, is a device in a granulator for compacting and preprocessing materials. In industries such as plastic granulation and pharmaceutical granule manufacturing, the dense bin compacts raw material powders or granules into materials with a certain density and shape through specific mechanical actions, facilitating subsequent granulation or molding processes.

[0003] The dense bin includes a housing and a compaction screw. The housing has a feed inlet and a discharge outlet. Materials enter the housing through the feed inlet, and the compaction screw compresses, heats, and plasticizes the materials through rotational motion. Then, the compressed materials leave the housing through the discharge outlet. However, the sizes of the materials in the housing vary, resulting in a low compaction uniformity of the compaction screw on the materials, and thus the uniformity of the density distribution of the discharged materials needs to be improved. Utility Model Content

[0004] In order to improve the uniformity of the density distribution of the materials discharged from the dense bin, this application provides a dense bin structure for granulation production.

[0005] The dense bin structure for granulation production provided by this application adopts the following technical solutions:

[0006] A dense bin structure for production includes a housing, a compaction pipeline, and a blower. The housing has a feed inlet and a material passing port; the compaction pipeline is connected to the housing, and the inner cavity of the compaction pipeline is communicated with the inner cavity of the housing through the material passing port; the compaction pipeline is connected with a compaction screw and a first motor. The compaction screw is located in the compaction pipeline and is rotationally connected to the compaction pipeline. The first motor is used to drive the compaction screw to rotate; a rotating shaft is rotationally connected in the inner cavity of the housing, and a plurality of first cutting blades are arranged on the circumferential side of the rotating shaft. A plurality of second cutting blades are arranged on the inner cavity wall of the housing; the housing is provided with a second motor, and the second motor is used to drive the rotating shaft to rotate; the blower is connected to the housing, and the blower is used to blow materials into the compaction pipeline; the end of the compaction pipeline away from the housing has a discharge outlet.

[0007] By adopting the above technical solution, when the dense bin is working, materials are fed into the inner cavity of the housing from the feed inlet, and at the same time, the first motor, the second motor and the blower are started. The second motor drives the rotating shaft to rotate, and the rotating shaft drives the second cutting knives to crush the materials. During the crushing process, the second cutting knives cooperate with some of the first cutting knives to shear the materials. Under the action of the blower, the crushed materials enter the compaction pipeline from the material passing port, and are discharged from the discharge port after being extruded by the extrusion rollers and the compaction screw. Since the materials are subjected to a certain degree of crushing treatment before entering the compaction pipeline, the volume sizes of the materials entering the compaction pipeline are relatively close and are easier to be compacted, thereby improving the uniformity of the density distribution of the materials discharged from the dense bin.

[0008] Optionally, the housing has a cylindrical structure, and the central axis of the housing is vertically arranged; the central axis of the compaction pipeline is horizontally arranged.

[0009] By adopting the above technical solution, the materials fall in the housing by means of gravity, eliminating the need for an additional conveying mechanism and saving energy.

[0010] Optionally, the second cutting knives extend along the radial direction of the housing, and a plurality of the second cutting knives are arranged in an interleaved manner.

[0011] By adopting the above technical solution, during the rotation of the rotating shaft, the materials not crushed by the first cutting knives are pushed by the first cutting knives and abut against the second cutting knives. The first cutting knives and the second cutting knives form a shear on the materials, facilitating the crushing of the materials, thereby improving the overall effect of material crushing and further ensuring the uniformity of the density distribution of the materials discharged from the dense bin.

[0012] Optionally, the second cutting knife includes a plurality of connecting sections, and the plurality of connecting sections are sequentially connected along the radial direction of the housing; adjacent connecting sections are detachably connected.

[0013] By adopting the above technical solution, it is convenient to adjust the length of the second cutting knife according to the type and size of the materials to be crushed.

[0014] Optionally, two extrusion rollers are rotatably connected in the compaction pipeline. Both of the two extrusion rollers extend in a direction perpendicular to the central axis of the compaction pipeline, and the two extrusion rollers abut against each other; two third motors are arranged on the compaction pipeline, and the two third motors are respectively used to drive the two extrusion rollers to rotate in opposite directions.

[0015] By adopting the above technical solution, after the materials are crushed, they enter the compaction pipeline under the action of the blower and are first extruded by the extrusion rollers, improving the compaction effect.

[0016] Optionally, the compaction pipe includes a cylindrical section and a square-section pipe section. The square-section pipe section is used for connecting with the housing, and the cylindrical section is connected to one end of the square-section pipe section away from the housing. The compaction screw is located in the cylindrical section, and the extrusion roller is located in the square-section pipe section. The side wall of the extrusion roller is attached to the inner wall of the square-section pipe section.

[0017] By adopting the above technical solution, the compaction pipe is divided into a cylindrical section and a square-section pipe section to adapt to the compaction screw and the extrusion roller. On the one hand, it is convenient for the installation of the compaction screw and the extrusion roller, and on the other hand, it ensures the compaction effect of the dense bin.

[0018] Optionally, the surface of the extrusion roller is provided with extrusion grooves, and the extrusion grooves are arranged in a circumferential direction around the extrusion roller. Extrusion ridges are formed between adjacent extrusion grooves, and the extrusion ridges of one extrusion roller abut against the bottom of the extrusion grooves of the other extrusion roller.

[0019] By adopting the above technical solution, on the one hand, the contact area between the material and the extrusion roller is increased to improve the compaction effect, and on the other hand, the shear force is formed on the material by the groove walls and the extrusion protrusions of the extrusion grooves, further improving the extrusion effect.

[0020] Optionally, the compaction pipe is provided with a vibration motor.

[0021] By adopting the above technical solution, it is possible to prevent the extruded material from adhering to the pipe wall of the compaction pipe.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By arranging the first cutter and the second cutter in the inner cavity of the housing, the material is crushed before being extruded, so that the difference in the volume size distribution of the material is small, thereby improving the uniformity of the density distribution of the material discharged from the dense bin;

[0024] 2. The second cutter includes a plurality of connecting segments, and the plurality of connecting segments are detachably connected, so as to adjust the length of the second cutter according to the type and size of the material, improving the flexibility of use of the dense bin;

[0025] 3. By arranging two extrusion rollers between the compaction screw and the housing, the material is extruded before reaching the compaction screw, improving the compaction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 is a schematic diagram for showing the internal structure of the housing.

[0028] Figure 3It is a schematic structural diagram for showing an extrusion roller.

[0029] Explanation of reference numerals: 1. Housing; 11. Feeding port; 12. Material passing port; 13. Second cutter; 131. Connection section; 14. Rotating shaft; 141. First cutter; 15. Second motor; 2. Compacting pipe; 21. Cylindrical section; 22. Square pipe section; 23. Discharge port; 24. Extrusion roller; 241. Extrusion groove; 242. Extrusion rib; 25. Compacting screw; 26. First motor; 27. Third motor; 28. Vibration motor; 3. Blower. Detailed implementation manners

[0030] The following will further elaborate on this application in conjunction with the attached Figures 1-3 drawings for a more detailed description.

[0031] An embodiment of this application discloses a compacting bin structure for granulation production. Referring to Figure 1 and Figure 2 , the compacting bin structure for granulation production includes a housing 1, a compacting pipe 2 and a blower 3.

[0032] The housing 1 has a feeding port 11 and a material passing port 12. The housing 1 is arranged in a cylindrical shape. The feeding port 11 is located at the upper part of the housing 1, and the material passing port 12 is opened on the side wall of the housing 1. The compacting pipe 2 is connected to the housing 1. The inner cavity of the compacting pipe 2 is communicated with the inner cavity of the housing 1 through the material passing port 12. The central axis of the compacting pipe 2 is perpendicular to the central axis of the housing 1. The blower 3 is installed on the housing 1, and the blowing direction of the blower 3 is towards the direction of the compacting pipe 2.

[0033] The compacting pipe 2 includes a cylindrical section 21 and a square pipe section 22. The square pipe section 22 is used for connecting to the housing 1, and the cylindrical section 21 is connected to one end of the square pipe section 22 far from the housing 1. The end of the cylindrical section 21 far from the housing 1 has a discharge port 23.

[0034] Two extrusion rollers 24 are rotatably connected inside the square pipe section 22. Both extrusion rollers 24 rotate around their own central axes as the rotating shafts 14. The central axes of the two extrusion rollers 24 are perpendicular to the central axis of the compacting pipe 2, and the two extrusion rollers 24 are in contact with each other. Two third motors 27 are installed on the outer wall of the square pipe section 22. The output shafts of the two third motors 27 are respectively connected to the two extrusion rollers 24, and the two third motors 27 are respectively used to drive the two extrusion rollers 24 to rotate in opposite directions.

[0035] Referring to Figure 2 and Figure 3 , an extrusion groove 241 is formed on the surface of one of the extrusion rollers 24. The extrusion groove 241 is arranged in a circumferential direction around the extrusion roller 24. An extrusion rib 242 is integrally formed on the surface of the other extrusion roller 24. The extrusion rib 242 of one extrusion roller 24 abuts against the bottom of the extrusion groove 241 of the other extrusion roller 24.

[0036] Inside the cylindrical section 21, there is a compaction screw 25. The compaction screw 25 is rotatably connected to one end of the cylindrical section 21 away from the housing 1. The compaction screw 25 extends along the length direction of the cylindrical section 21, and the compaction screw 25 rotates about its own central axis as the rotation axis 14. At one end of the cylindrical section 21 away from the housing 1, a first motor 26 is installed. The output end of the first motor 26 is connected to the compaction screw 25, and the first motor 26 is used to drive the compaction screw 25 to rotate.

[0037] In the inner cavity of the housing 1, a rotation axis 14 is rotatably connected. Outside the housing 1, a second motor 15 is provided. The output shaft of the second motor 15 is connected to the rotation axis 14, and the second motor 15 is used to drive the rotation axis 14 to rotate. On the circumferential side of the rotation axis 14, a plurality of first cutting blades 141 are provided. The plurality of first cutting blades 141 are evenly distributed on the circumferential side of the rotation axis 14, and the plurality of first cutting blades 141 all extend along the radial direction of the housing 1.

[0038] A plurality of second cutting blades 13 are installed on the inner cavity wall of the housing 1. The plurality of second cutting blades 13 are evenly distributed on the inner cavity wall of the housing 1. During the process of the rotation axis 14 driving the first cutting blades 141 to rotate, the first cutting blades 141 and the second cutting blades 13 cooperate with each other to cut the material, so as to improve the crushing effect and efficiency of the material.

[0039] Specifically, the second cutting blade 13 includes a plurality of connecting sections 131. The plurality of connecting sections 131 are sequentially connected along the radial direction of the housing 1, and the adjacent connecting sections 131 are detachably connected. Thus, it is convenient to adjust the length of the second cutting blade 13 according to the type and size of the material fed into the housing 1, and the use flexibility of the compaction bin is improved. In this embodiment, the adjacent connecting sections 131 are threadedly connected. In other embodiments, the adjacent connecting sections 131 can also be detachably connected by a clamping method.

[0040] Furthermore, a vibration motor 28 is installed on the outer wall of the compaction pipe 2. When the compaction bin is working, the vibration motor 28 is started to prevent the material that has been extruded and fluidized from caking on the inner wall of the compaction pipe 2.

[0041] The implementation principle of a compaction bin structure for granulation production in an embodiment of the present application is as follows: When the compaction bin is working, the material is fed into the inner cavity of the housing 1 from the feed port 11, and at the same time, the first motor 26, the second motor 15, and the blower 3 are started.

[0042] The second motor 15 drives the rotation axis 14 to rotate. The rotation axis 14 drives the second cutting blade 13 to crush the material. During the crushing process, the second cutting blade 13 and some of the first cutting blades 141 cooperate with each other to cut the material. Under the action of the blower 3, the crushed material enters the compaction pipe 2 from the material passing port 12, and is discharged from the discharge port 23 after being extruded by the extrusion roller 24 and the compaction screw 25.

[0043] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A dense bin structure for granulation production, characterized in that: It includes a housing (1), a compaction pipe (2) and a blower (3). The housing (1) has a feed inlet (11) and a material passing opening (12); the compaction pipe (2) is connected to the housing (1), and the inner cavity of the compaction pipe (2) communicates with the inner cavity of the housing (1) through the material passing opening (12); the compaction pipe (2) is connected with a compaction screw (25) and a first motor (26). The compaction screw (25) is located in the compaction pipe (2) and is rotatably connected to the compaction pipe (2). The first motor (26) is used to drive the compaction screw (25) to rotate; a rotating shaft (14) is rotatably connected in the inner cavity of the housing (1), and a plurality of first cutting blades (141) are arranged on the circumferential side of the rotating shaft (14). A plurality of second cutting blades (13) are arranged on the inner cavity wall of the housing (1); the housing (1) is provided with a second motor (15), and the second motor (15) is used to drive the rotating shaft (14) to rotate; the blower (3) is connected to the housing (1), and the blower (3) is used to blow materials into the compaction pipe (2); the end of the compaction pipe (2) away from the housing (1) has a discharge port (23).

2. The compact bin structure for granulation production according to claim 1, wherein: The housing (1) has a cylindrical structure, and the central axis of the housing (1) is vertically arranged; the central axis of the compaction pipe (2) is horizontally arranged.

3. The dense bin structure for granulation production according to claim 2, characterized in that: The second cutting blades (13) extend along the radial direction of the housing (1), and a plurality of the second cutting blades (13) are arranged in an alternating manner.

4. The compact silo structure for granulation production according to claim 3, characterized in that: The second cutting blade (13) includes a plurality of connecting segments (131), and the plurality of connecting segments (131) are sequentially connected along the radial direction of the housing (1); adjacent connecting segments (131) are detachably connected.

5. The compact silo structure for granulation production according to claim 1, characterized in that: Two pressing rollers (24) are rotatably connected in the compaction pipe (2). Both of the two pressing rollers (24) extend in a direction perpendicular to the central axis of the compaction pipe (2), and the two pressing rollers (24) are in mutual contact; the compaction pipe (2) is provided with two third motors (27), and the two third motors (27) are respectively used to drive the two pressing rollers (24) to rotate in opposite directions.

6. The compact bin structure for granulation production according to claim 5, characterized in that: The compaction pipe (2) includes a cylindrical section (21) and a square tube section (22). The square tube section (22) is used to be connected to the housing (1), and the cylindrical section (21) is connected to one end of the square tube section (22) away from the housing (1); the compaction screw (25) is located in the cylindrical section (21), the pressing rollers (24) are located in the square tube section (22), and the side walls of the pressing rollers (24) are attached to the inner wall of the square tube section (22).

7. The compact silo structure for granulation production according to claim 5 or 6, characterized in that: An extrusion groove (241) is formed on the surface of one of the pressing rollers (24), and the extrusion groove (241) is arranged in a circumferential manner around the pressing roller (24); an extrusion rib (242) is arranged on the circumferential side of the other pressing roller (24), and the extrusion rib (242) of one pressing roller (24) abuts against the bottom of the extrusion groove (241) of the other pressing roller (24).

8. The compact silo structure for granulation production according to claim 1, characterized in that: The compaction pipe (2) is provided with a vibration motor (28).

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