Pelletizing unit for SAP production

Abstract

The invention relates to the field of water-absorbent resin manufacturing, in particular to a granulating unit for SAP (super absorbent polymer) production, which comprises a crushing chamber for raw materials to enter, a plurality of stirring plates positioned in the crushing chamber and capable of stirring the raw materials, and a granulating part for extruding and cutting the raw materials, all the middle side rods are connected with the same ejector block, a motor shell is arranged outside the crushing chamber, a stirring motor for driving the ejector block to rotate is installed in the motor shell, an extrusion air cylinder for driving the motor shell and the ejector block to move synchronously is arranged outside the crushing chamber, each stirring plate is slidably connected with a plate sliding block, and each plate sliding block is rotatably connected with a side rod. And a switching cylinder for driving all the side rods to synchronously move so as to adjust the angle between the stirring plate and the middle side rod is arranged outside the crushing chamber, so that the angle adjustment of the stirring plate is more quickly completed, and the influence on the granulation progress is reduced.

Description

Technical Field

[0001] The present application relates to the field of water-absorbing resin production, and in particular to a granulation unit for SAP production. Background Art

[0002] The manufacturing process of water-absorbent resin begins with polymerization and neutralization to obtain a gel-like raw material, which is then granulated and dried to obtain the initial product. The granulation process, which converts the gel into granules, generally involves crushing the raw material and then extruding and cutting it into granules.

[0003] For example, the announcement number CN208052523U is an integrated stirring, drying and cutting equipment for the production of high-molecular water-absorbent resin. The stirring plate can rotate along with the stirring rod to stir and crush the gel raw material, and then the stirring plate rotates to be perpendicular to the stirring rod, and then the stirring plate presses down to press the crushed raw material into the extrusion port, and cooperates with the rotating cutting blade to cut the extruded raw material into corresponding particles.

[0004] With regard to the above-mentioned related technologies, after each stirring and crushing is completed, it is necessary to open the inspection window to rotate the stirring plate so that the stirring plate is perpendicular to the stirring rod, and then the raw materials can be extruded and cut, which is very inconvenient and can easily have a great impact on the granulation progress. Summary of the Invention

[0005] In order to reduce the impact on the granulation progress, the present application provides a granulation unit for SAP production.

[0006] The present application provides a granulation unit for SAP production adopts the following technical solution.

[0007] A granulating unit for SAP production includes a crushing chamber for raw materials to enter, several stirring plates located in the crushing chamber and capable of stirring the raw materials, and a granulating section for extruding and cutting the raw materials, each of the stirring plates is rotatably connected to a middle side rod, all of the middle side rods are connected to the same top block, a motor housing is provided outside the crushing chamber, a stirring motor for driving the top block to rotate is installed in the motor housing, an extrusion cylinder for driving the motor housing and the top block to move synchronously is provided outside the crushing chamber, each stirring plate is slidably connected to a plate slider, each plate slider is rotatably connected to a side rod, and a switching cylinder is provided outside the crushing chamber for driving all the side rods to move synchronously so that the angle between the stirring plate and the middle side rod can be adjusted.

[0008] By adopting the above technical solution, the stirring plate is driven to rotate by the movement of the side rod, so that when the raw materials in the crushing chamber need to be stirred and crushed, the stirring plate close to the side of the side rod can move upward, and when the raw materials in the crushing chamber need to be squeezed downward, the stirring plate can be turned over to be horizontal, and the stirring plate can change its state more quickly, which can reduce the impact on the granulation progress.

[0009] Optionally, the power rod of the switching cylinder is connected with a moving ring located in the crushing chamber. The moving ring is rotatably connected with a rotating ring around the rotation axis of the stirring motor, and the rotating ring is detachably connected to all the side rods.

[0010] By adopting the above technical solution, while the stirring plate can be smoothly driven by the middle rod to rotate, the switching cylinder can also smoothly drive the side rods to move.

[0011] Optionally, a middle shaft is detachably connected between the top block and the output shaft of the stirring motor. A convex portion is formed on the outer surface of the middle shaft, and the convex portion is inserted into the rotating ring.

[0012] By adopting the above technical solution, the rotating ring can be smoothly driven to rotate while the middle shaft rotates, so as to avoid excessive external force on the side rods when only driven by the stirring plate.

[0013] Optionally, several detection blocks are provided on the part of the middle shaft exposed outside the crushing chamber, and a photoelectric sensor with a detection end that can be aligned with the detection blocks is provided on the part of the power rod of the switching cylinder exposed outside the crushing chamber.

[0014] By adopting the above technical solution, the angle adjustment between the stirring plate and the middle rod is more accurate.

[0015] Optionally, several segments are provided on the surface of the stirring plate.

[0016] By adopting the above technical solution, the stirring and crushing efficiency of the raw materials is improved.

[0017] Optionally, each segment is rotatably connected to the stirring plate, and the segment can rotate to completely enter the stirring plate.

[0018] By adopting the above technical solution, when the stirring needs to move down to be close to the bottom surface of the crushing chamber to extrude the raw materials as fully as possible after the raw materials are crushed, the segments are not likely to contact the bottom surface of the crushing chamber.

[0019] Optionally, a rod gear is coaxially and fixedly connected at the rotation point of the middle rod. An internal rack that can mesh with the rod gear is slidably connected in the stirring plate. A sub-gear is coaxially and fixedly connected at the rotation point of each segment, and the internal rack in each stirring plate meshes with all the sub-gears in the corresponding stirring plate.

[0020] By adopting the above technical solution, the segments can be synchronously rotated during the rotation of the stirring plate.

[0021] Optionally, the granulating part includes an orifice plate detachably connected to the bottom of the crushing chamber for extruding raw materials, a knife ring member rotatably connected to the orifice plate for cutting the extruded raw materials, and a cutting motor for driving the knife ring member to rotate.

[0022] By adopting the above technical solution, the material extruded from the orifice plate is originally slit by the cutter ring so that the raw material forms particulate matters of a certain shape.

[0023] In summary, the present application has at least the following beneficial effects.

[0024] 1. The stirring plate can quickly change its state, reducing the impact on the granulation progress.

[0025] 2. Avoid excessive external force on the side rod when it is only driven by the stirring plate.

[0026] 3. The shards can be synchronously rotated during the rotation of the stirring plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the main structure of the present application;

[0028] Figure 2 is a schematic diagram of the structure as viewed from below at the bottom of the crushing chamber;

[0029] Figure 3 is a schematic diagram of the structure as viewed from below at the bottom surface of the stirring plate with only the top cover plate of the crushing chamber retained;

[0030] Figure 4 is a schematic diagram of the structure as viewed from above at the top surface of the stirring plate;

[0031] Figure 5 is Figure 4 an enlarged view of part A in

[0032] Description of the reference numerals: 1. Crushing chamber; 2. Stirring plate; 3. Middle side rod; 31. Cutting motor; 32. Feed hopper; 4. Top block; 41. Detection block; 42. Photoelectric sensor; 43. Shard; 44. Rod gear; 45. Inner rack; 46. Sub-gear; 47. Granulation part; 48. Orifice plate; 49. Cutter ring part; 5. Motor housing; 51. Stirring motor; 52. Extrusion cylinder; 53. Plate slider; 54. Side rod; 55. Switching cylinder; 56. Moving ring; 57. Rotating ring; 58. Central axis; 59. Convex part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further describes the present application in detail with reference to the drawings.

[0034] An embodiment of the present application discloses a granulation unit for SAP production. Referring to Figure 1 and Figure 2 , it includes a crushing chamber 1 with support legs at the bottom for placing on the ground. The internal shape of the crushing chamber 1 is cylindrical, and a feed hopper 32 for putting gel raw materials is connected to the side of the crushing chamber 1. A granulation part 47 for extruding and cutting the raw materials is provided at the discharge port at the bottom of the crushing chamber 1.

[0035] Referring to Figure 1 and Figure 3 , there are several stirring plates 2 in the crushing chamber 1. In this embodiment, the number of stirring plates 2 is three. The three stirring plates 2 can rotate so that the three stirring plates 2 can be spliced to form a disc, so as to extrude the raw materials in the crushing chamber 1 downward. And a rubber sleeve can be arranged around the stirring plate 2 to ensure that the stirring plates 2 can rotate smoothly while remaining close to each other. Each stirring plate 2 is rotatably connected to a middle-side rod 3 at the upper surface near the vertical center line of the crushing chamber 1. A rubber sleeve that surrounds the rotation point of the middle-side rod 3 is arranged at the rotation point of the stirring plate 2 where the middle-side rod 3 is located. The middle-side rod 3 is vertical, and all the upper ends of the middle-side rods 3 are fixedly connected to the same top block 4. A vertical central shaft 58 is fixedly connected to the center of the upper surface of the top block 4. A motor housing 5 is slidably connected to the outside of the top of the crushing chamber 1 in the vertical direction. A stirring motor 51 with an output shaft coaxially and detachably connected to the upper end of the central shaft 58 is detachably connected inside the motor housing 5. An extrusion cylinder 52 is detachably connected to the outside of the top of the crushing chamber 1 above the motor housing 5. The power rod of the extrusion cylinder 52 is vertical.

[0036] Referring to Figure 3 and Figure 4 , a plate slider 53 is slidably connected to each side of the stirring plate 2 away from the vertical center line of the crushing chamber 1. A slide rail made of self-lubricating material can be arranged on the stirring plate 2 for the stable sliding of the plate slider 53. The straight line where the moving direction of the plate slider 53 is located intersects with the vertical center line of the crushing chamber 1. Each plate slider 53 is rotatably connected to a side rod 54. The bottom rotation axis directions of the side rods 54 of each stirring plate 2 are the same as those of the middle-side rod 3. All the upper ends of the side rods 54 are fixedly connected to the same rotating ring 57. The axis of the rotating ring 57 is the same as the vertical center line of the crushing chamber 1. A moving ring 56 is coaxially rotatably connected to the upper surface of the rotating ring 57. Two switching cylinders 55 are detachably connected to the outside of the top of the crushing chamber 1. The bottom end of the vertical power rod of the switching cylinder 55 is detachably connected to the upper surface of the moving ring 56, so as to adjust the angle between the stirring plate 2 and the middle-side rod 3 by the extension and shortening of the power rod of the switching cylinder 55.

[0037] Referring to Figure 4 , a vertical convex part 59 is formed on the outer circumferential surface of the central shaft 58. The convex part 59 can be formed in several numbers around the axis of the central shaft 58. The convex part 59 is inserted into the inner ring of the rotating ring 57, so that the central shaft 58 can drive the rotating ring 57 to rotate, and the rotating ring 57 can also move smoothly relative to the central shaft 58 in the vertical direction, so that the rotation of the rotating ring 57 and the rotation of the stirring plate 2 around the vertical center line of the crushing chamber 1 can drive the side rod 54 to rotate, so that the side rod 54 is not easily subjected to excessive external force.

[0038] Referring to Figure 1, several detection blocks 41 are detachably connected vertically along the upper part of the central axis 58 exposed outside the crushing chamber 1. A power rod of a switching cylinder 55 is detachably connected with a photoelectric sensor 42 located outside the crushing chamber 1. The photoelectric sensor 42 and the switching cylinder 55 are electrically connected to an external controller. When the photoelectric sensor 42 is facing the detection block 41 with the lowest height, all the stirring plates 2 form a complete disc at this time; when the photoelectric sensor 42 is facing the detection block 41 with the highest height, the height at the side of the stirring plate 2 away from the middle side rod 3 is the highest at this time.

[0039] Refer to Figure 3 , a row of segments 43 is rotatably connected to the surface of each stirring plate 2 on the side away from the middle side rod 3, and several segments 43 are arranged along the moving direction of the plate slider 53 on the corresponding stirring plate 2.

[0040] Refer to Figure 4 and Figure 5 , each segment 43 is coaxially and fixedly connected with a sub-gear 46 located inside the stirring plate 2, and all the sub-gears 46 are meshed with the same internal rack 45, and the internal rack 45 moves along the arrangement direction of each row of segments 43. A rod gear 44 is coaxially and fixedly connected to the rotation point of each middle side rod 3, and the rod gear 44 is meshed with the side of the internal rack 45 away from the sub-gear 46, so that during the process of the stirring plate 2 rotating from horizontal to inclined, the segments 43 can rotate synchronously, so that the segments 43 rotate from the state of being completely embedded in the stirring plate 2 to the state of being exposed outside the stirring plate 2.

[0041] Refer to Figure 2 , the granulating part 47 includes an orifice plate 48 detachably connected to the bottom of the crushing chamber 1 for raw material extrusion. A knife ring part 49 is rotatably connected to the horizontal bottom surface of the orifice plate 48. The knife ring part 49 can be composed of a ring and blades fixed on the inner ring of the ring. A cutting motor 31 is detachably connected to the bottom of the crushing chamber 1 and meshed with the tooth ring around the knife ring part 49 through gears to make the knife ring part 49 rotate, so that the knife ring part 49 rotates continuously in one direction to cut the raw material extruded by the orifice plate 48 into grains.

[0042] The implementation principle of a granulating unit for SAP production in the embodiment of the present application is as follows: after the raw material is fed into the crushing chamber 1, the stirring plate 2 remains inclined, and the power rods of the switching cylinder 55 and the extrusion cylinder 52 extend and then shorten synchronously and repeat, and the stirring motor 51 runs synchronously, so that the stirring plate 2 continuously stirs and crushes the raw material in the crushing chamber 1.

[0043] After the stirring motor 51 operates for a predetermined period of time, the power rods of the switching cylinder 55 and the extrusion cylinder 52 synchronously move upward to a predetermined high height. At this time, all the stirring plates 2 are higher than the top height of the raw materials in the crushing chamber 1. Then, the power rod of the switching cylinder 55 extends until the photoelectric sensor 42 is aligned with the detection block 41 with the lowest height. At this time, all the stirring plates 2 are turned horizontally to form a complete disc, and at this time, all the segments 43 also rotate into the stirring plates 2, that is, the bottom surface of the segment 43 is flush with or higher than the bottom surface of the stirring plate 2. Then, the power rods of the switching cylinder 55 and the extrusion cylinder 52 synchronously extend so that the stirring plate 2 can extrude the raw materials from the orifice plate 48, and the rotating knife ring member 49 cuts the raw materials.

[0044] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A granulating unit for SAP production, comprising a crushing chamber (1) for raw materials to enter, several stirring plates (2) located in the crushing chamber (1) and capable of stirring the raw materials, and a granulating part (47) for extruding and cutting the raw materials, characterized in that: Each of the stirring plates (2) is rotatably connected to a middle side rod (3), all the middle side rods (3) are connected to the same top block (4), a motor housing (5) is provided outside the crushing chamber (1), a stirring motor (51) for driving the top block (4) to rotate is installed inside the motor housing (5), an extrusion cylinder (52) for driving the motor housing (5) and the top block (4) to move synchronously is provided outside the crushing chamber (1), each stirring plate (2) is slidably connected to a plate slider (53), each plate slider (53) is rotatably connected to a side rod (54), and a switching cylinder (55) for driving all the side rods (54) to move synchronously to adjust the angle between the stirring plate (2) and the middle side rod (3) is provided outside the crushing chamber (1).

2. The granulation unit for SAP production according to claim 1, characterized in that: A power rod of the switching cylinder (55) is connected to a moving ring (56) located inside the crushing chamber (1), the moving ring (56) is rotatably connected to a rotating ring (57) around the rotation axis of the stirring motor (51), and the rotating ring (57) is detachably connected to all the side rods (54).

3. The granulation unit for SAP production according to claim 2, characterized in that: A middle shaft (58) is detachably connected between the top block (4) and the output shaft of the stirring motor (51), a convex portion (59) is formed on the outer surface of the middle shaft (58), and the convex portion (59) is inserted into the rotating ring (57).

4. A granulation unit for SAP production according to claim 3, characterized in that: Several detection blocks (41) are provided on the part of the middle shaft (58) exposed outside the crushing chamber (1), and a photoelectric sensor (42) with a detection end capable of aligning with the detection blocks (41) is provided on the part of the power rod of the switching cylinder (55) exposed outside the crushing chamber (1).

5. A granulation unit for SAP production according to claim 1, characterized in that: Several segments (43) are provided on the surface of the stirring plate (2).

6. The granulation unit for SAP production according to claim 5, characterized in that: Each of the segments (43) is rotatably connected to the stirring plate (2), and the segment (43) can rotate to completely enter the stirring plate (2).

7. A granulation unit for SAP production according to claim 6, characterized in that: A rod gear (44) is coaxially and fixedly connected to the rotation point of the middle side rod (3), an internal rack (45) capable of meshing with the rod gear (44) is slidably connected inside the stirring plate (2), a sub-gear (46) is coaxially and fixedly connected to the rotation point of each segment (43), and the internal rack (45) in each stirring plate (2) meshes with all the sub-gears (46) in the corresponding stirring plate (2).

8. A granulation unit for SAP production according to claim 1, characterized in that: The granulating part (47) includes an orifice plate (48) detachably connected to the bottom of the crushing chamber (1) for extruding raw materials, a knife ring part (49) rotatably connected to the orifice plate (48) for cutting the extruded raw materials, and a cutting motor (31) for driving the knife ring part (49) to rotate.

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