Double-disc refiner

Abstract

The utility model relates to the technical field of pulp mill, concretely is double disc pulp mill. Including material cylinder, crushing mechanism and the blanking tube, the bottom of material cylinder is provided with support, the crushing mechanism includes the bottom disc that rotates the installation in the inside of material cylinder, is located the polishing disc above bottom disc and is installed in material cylinder for driving polishing disc and bottom disc first power component that each other reverse rotation, polishing disc is double cone structure, and the upper end of bottom disc is in accord with the bottom of polishing disc, the circumferential side of bottom disc is installed with sealing ring, the outer surface of polishing disc, the inner surface of bottom disc and the inside wall upper portion of material cylinder all are installed with a plurality of grinding teeth, and the blanking tube communicates with the inside recessed chamber of bottom disc. The utility model discloses through increasing polishing area and improving the relative speed of polishing disc and bottom disc to improve the pulping efficiency of equipment.

Description

Technical Field

[0001] This utility model relates to the field of pulping machine technology, and in particular to a double-disc pulping machine. Background Technology

[0002] Currently, in the papermaking and pulping industry, the double-disc refiner is a key pulping equipment widely used in paper mills for processing chemical wood pulp, mechanical pulp, and waste paper pulp. It can achieve constant power or constant energy consumption pulping control and has a large market share. "Papermaking is 30% papermaking and 70% pulping," meaning that pulping generally utilizes the mechanical action between the teeth of the double-disc refiner discs to process the fibers in the pulp, loosening, appropriately cutting, and flocculentizing them. The fibers in the pulp absorb water and swell during pulping, exhibiting high elasticity and plasticity, which meets the production requirements of the papermaking machine, enabling the produced paper to achieve the expected quality indicators.

[0003] In existing technologies, a dual-disc grinding process is typically used to crush and grind pulp raw materials. However, existing grinding discs are usually flat discs, resulting in a small disc size relative to the raw material, which affects grinding efficiency. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a double-disc grinding machine.

[0005] The technical solution of this utility model, a double-disc refiner, includes:

[0006] The material cylinder has a support at its bottom.

[0007] The crushing mechanism includes a chassis rotatably mounted inside the material cylinder, a grinding disc located above the chassis, and a first power component mounted on the material cylinder for driving the grinding disc and the chassis to rotate in opposite directions. The grinding disc has a double-cone structure, with the upper end of the chassis fitting into the bottom of the grinding disc. A sealing ring is installed around the chassis. Several grinding teeth are installed on the outer surface of the grinding disc, the inner surface of the chassis, and the upper part of the inner wall of the material cylinder.

[0008] The feed pipe is connected to the inner recessed cavity of the chassis.

[0009] Preferably, the outer side of the material cylinder is provided with an outer shell, which is "L"-shaped. The first power assembly includes a splined shaft, a splined sleeve, a first drive shaft, a first synchronous pulley, a first synchronous belt, a first gear, a second gear, a second drive shaft, a second synchronous pulley, a second synchronous belt, and a motor. Two first and two synchronous pulleys are provided. The splined sleeve, the first drive shaft, and the second drive shaft are rotatably mounted inside the outer shell. The two first synchronous pulleys are respectively mounted on the feed pipe and the first drive shaft, and are connected by the first synchronous belt. A through hole is provided on the side of the material cylinder for the first synchronous belt to pass through. The two second synchronous pulleys are respectively mounted on the splined sleeve and the second drive shaft, and are connected by the second synchronous belt. The first gear and the second gear are respectively mounted on the first drive shaft and the second drive shaft, and are meshed. The splined shaft is connected to the grinding disc and movably passes through the outer shell and the splined sleeve, and is slidably connected to the splined sleeve. A second power assembly for driving the splined shaft to move up and down is installed on the outer shell.

[0010] Preferably, the second power assembly includes a first linear drive mechanism, a lifting plate, and two turntables. The first linear drive mechanism is mounted on the upper end of the housing. The lifting plate is connected to the output shaft of the first linear drive mechanism. A spline shaft moves through the lifting plate. Both turntables are mounted on the spline shaft and are located at the upper and lower ends of the lifting plate, respectively.

[0011] Preferably, multiple first balls are installed on both turntables.

[0012] Preferably, a second linear drive mechanism is installed on the lifting plate, and a connecting frame is connected to the output shaft of the second linear drive mechanism, and a push ring is connected to the connecting frame.

[0013] Preferably, a support ring is provided on the inner wall of the barrel, the chassis is rotatably mounted on the support ring, and multiple second ball bearings are installed on the support ring.

[0014] Preferably, there is a gap between the grinding disc and the inner wall of the barrel.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] 1. The first power component can drive the grinding disc and the chassis to rotate in opposite directions, thereby greatly increasing the relative speed between the grinding disc and the chassis and improving the crushing effect on the raw materials.

[0017] 2. Because the bottom of the grinding disc and the top of the chassis are conical, the grinding surface area is increased, which further improves the grinding efficiency of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the present invention.

[0020] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A.

[0021] Reference numerals: 1. Material cylinder; 2. Base; 3. Grinding disc; 4. Support ring; 5. Bracket; 6. Feed tube; 7. First linear drive mechanism; 8. Second linear drive mechanism; 9. Push ring; 10. Splined shaft; 11. Turntable; 12. Lifting plate; 13. Splined sleeve; 14. First transmission shaft; 15. Housing; 16. First synchronous pulley; 17. First synchronous belt; 18. Sealing ring; 19. First gear; 20. Second gear; 21. Second transmission shaft; 22. Second synchronous pulley; 23. Second synchronous belt; 24. Motor; 25. Connecting frame. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-3 As shown, the double-disc grinder proposed in this embodiment includes a feed cylinder 1, a crushing mechanism, and a feed pipe 6.

[0024] A support 5 is provided at the bottom of the material cylinder 1; an outer shell 15 is provided on the outside of the material cylinder 1, and the outer shell 15 is "L" shaped; the crushing mechanism includes a base 2 rotatably mounted inside the material cylinder 1, a grinding disc 3 located above the base 2, and a first power component mounted on the material cylinder 1 to drive the grinding disc 3 and the base 2 to rotate in opposite directions; a support ring 4 is provided on the inner wall of the material cylinder 1, and the base 2 is rotatably mounted on the support ring 4. Multiple second balls are installed on the support ring 4. The support ring 4 allows the base 2 to roll and provides support for the base 2, while the second balls reduce the resistance of the base 2 during rotation; the feed pipe 6 communicates with the inner recessed chamber of the base 2, and the crushed raw material is discharged to the outside through the feed pipe 6; there is a gap between the grinding disc 3 and the inner wall of the material cylinder 1.

[0025] The first power assembly includes a splined shaft 10, a splined sleeve 13, a first drive shaft 14, a first synchronous pulley 16, a first synchronous belt 17, a first gear 19, a second gear 20, a second drive shaft 21, a second synchronous pulley 22, a second synchronous belt 23, and a motor 24. Two first synchronous pulleys 16 and two second synchronous pulleys 22 are provided. The splined sleeve 13, the first drive shaft 14, and the second drive shaft 21 are all rotatably mounted inside the housing 15. The two first synchronous pulleys 16 are respectively mounted on the feed pipe 6 and the first drive shaft 14, and are connected by a [connection / connection]. The first synchronous belt 17 is connected for transmission. The side of the material cylinder 1 has a through hole for the first synchronous belt 17 to pass through. Two second synchronous belt pulleys 22 are respectively mounted on the spline sleeve 13 and the second drive shaft 21. The two second synchronous belt pulleys 22 are connected for transmission through the second synchronous belt 23. The first gear 19 and the second gear 20 are respectively mounted on the first drive shaft 14 and the second drive shaft 21. The first gear 19 and the second gear 20 are meshed. The spline shaft 10 is connected to the grinding disc 3. The spline shaft 10 movably passes through the outer shell 15 and the spline sleeve 13, and the spline shaft 10 and the spline sleeve 13 are slidably connected.

[0026] Motor 24 drives the first transmission shaft 14 to rotate, which in turn drives the feed tube 6 to rotate under the cooperation of the first synchronous belt 17 and the two first synchronous pulleys 16, thereby driving the chassis 2 to rotate. The rotation of the first transmission shaft 14 drives the first gear 19 to rotate, and the rotation of the first gear 19 drives the second transmission shaft 21 to rotate, so that the rotation direction of the second transmission shaft 21 is opposite to that of the first transmission shaft 14. Under the cooperation of the second synchronous belt 23 and the two second synchronous pulleys 22, the spline sleeve 13 is driven to rotate, and the rotation of the spline sleeve 13 drives the spline shaft 10 to rotate, and the rotation of the spline shaft 10 drives the grinding disc 3 to rotate. The grinding disc 3 has a double cone structure, and the upper end of the chassis 2 fits with the bottom of the grinding disc 3. A sealing ring 18 is installed on the periphery of the chassis 2. Several grinding teeth are installed on the outer surface of the grinding disc 3, the inner surface of the chassis 2, and the upper part of the inner wall of the feed tube 1. A second power component for driving the spline shaft 10 to rise and fall is installed on the outer shell 15.

[0027] Specifically, the raw material is first fed into the upper opening of the feed cylinder 1. After initial crushing in the upper part of the inner cavity of the feed cylinder 1, the raw material passes through the gap around the grinding disc 3 and then falls downwards between the grinding disc 3 and the base plate 2. The raw material is finely ground by the synchronous counter-rotation of the grinding disc 3 and the base plate 2. Finally, the ground raw material is discharged through the discharge pipe 6. In the technical solution, the first power component can drive the grinding disc 3 and the base plate 2 to rotate in opposite directions, which greatly increases the relative speed of the grinding disc 3 and the base plate 2 and improves the crushing effect on the raw material. In addition, since the bottom of the grinding disc 3 and the upper end of the base plate 2 are conical, the grinding surface area is increased, which further improves the grinding efficiency of the equipment.

[0028] Example 2

[0029] like Figure 1 and Figure 2 As shown, the dual-disc grinder proposed in this embodiment, compared with the first embodiment, has a second power component including a first linear drive mechanism 7, a lifting plate 12, and two turntables 11. The first linear drive mechanism 7 is installed on the upper end of the housing 15, the lifting plate 12 is connected to the output shaft of the first linear drive mechanism 7, the spline shaft 10 moves through the lifting plate 12, and the two turntables 11 are both installed on the spline shaft 10, and the two turntables 11 are respectively located at the upper and lower ends of the lifting plate 12. Multiple first ball bearings are installed on both turntables 11. In this technical solution, the first linear drive mechanism 7 can drive the lifting plate 12 to move, and the movement of the lifting plate 12 can drive the spline shaft 10 and the grinding disc 3 to move, thereby adjusting the gap between the grinding disc 3 and the chassis 2, so that the grinding fineness of the raw materials can be adjusted.

[0030] Example 3

[0031] like Figure 2 As shown, in this embodiment of the double-disc grinder, compared with embodiment two, in this embodiment, preferably, a second linear drive mechanism 8 is installed on the lifting plate 12, a connecting frame 25 is connected to the output shaft of the second linear drive mechanism 8, and a push ring 9 is connected to the connecting frame 25; the push ring 9 can be driven to move up and down by the second linear drive mechanism 8, which can prevent the raw material from getting stuck in the peripheral gap of the grinding disc 3.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A double-disc refiner, characterized in that, include: A material cylinder (1) is provided with a support (5) at its bottom end; The crushing mechanism includes a chassis (2) rotatably mounted inside the material cylinder (1), a grinding disc (3) located above the chassis (2), and a first power component mounted on the material cylinder (1) for driving the grinding disc (3) and the chassis (2) to rotate in opposite directions. The grinding disc (3) has a double cone structure, and the upper end of the chassis (2) fits into the bottom of the grinding disc (3). A sealing ring (18) is installed on the periphery of the chassis (2). Several grinding teeth are installed on the outer surface of the grinding disc (3), the inner surface of the chassis (2), and the upper part of the inner wall of the material cylinder (1). The feed pipe (6) is connected to the inner recessed cavity of the chassis (2).

2. The double-disc refiner according to claim 1, characterized in that, The outer side of the material cylinder (1) is provided with a housing (15), which is "L" shaped. The first power assembly includes a splined shaft (10), a splined sleeve (13), a first drive shaft (14), a first synchronous pulley (16), a first synchronous belt (17), a first gear (19), a second gear (20), a second drive shaft (21), a second synchronous pulley (22), a second synchronous belt (23), and a motor (24). There are two of each of the first synchronous pulley (16) and the second synchronous pulley (22). The splined sleeve (13), the first drive shaft (14), and the second drive shaft (21) are rotatably mounted on the inner side of the housing (15). The two first synchronous pulleys (16) are respectively mounted on the feed pipe (6) and the first drive shaft (14). The two first synchronous pulleys (16) are connected by a first synchronous belt. A synchronous belt (17) is connected for transmission. The side of the material cylinder (1) is provided with a through hole for the first synchronous belt (17) to pass through. Two second synchronous belt pulleys (22) are respectively installed on the spline sleeve (13) and the second drive shaft (21). The two second synchronous belt pulleys (22) are connected to each other by a second synchronous belt (23). The first gear (19) and the second gear (20) are respectively installed on the first drive shaft (14) and the second drive shaft (21). The first gear (19) and the second gear (20) are meshed. The spline shaft (10) is connected to the grinding disc (3). The spline shaft (10) moves through the outer shell (15) and the spline sleeve (13), and the spline shaft (10) and the spline sleeve (13) are slidably connected. A second power component for driving the spline shaft (10) to rise and fall is installed on the outer shell (15).

3. The double-disc refiner according to claim 2, characterized in that, The second power assembly includes a first linear drive mechanism (7), a lifting plate (12), and two turntables (11). The first linear drive mechanism (7) is installed on the upper end of the housing (15). The lifting plate (12) is connected to the output shaft of the first linear drive mechanism (7). A spline shaft (10) moves through the lifting plate (12). The two turntables (11) are both installed on the spline shaft (10) and are located at the upper and lower ends of the lifting plate (12), respectively.

4. The double-disc refiner according to claim 3, characterized in that, Multiple first balls are installed on both turntables (11).

5. The double-disc refiner according to claim 4, characterized in that, A second linear drive mechanism (8) is installed on the lifting plate (12). A connecting frame (25) is connected to the output shaft of the second linear drive mechanism (8). A push ring (9) is connected to the connecting frame (25).

6. The double-disc refiner according to claim 1, characterized in that, A support ring (4) is provided on the inner wall of the barrel (1), and the chassis (2) is rotatably mounted on the support ring (4). Multiple second balls are installed on the support ring (4).

7. The double-disc refiner according to claim 1, characterized in that, There is a gap between the grinding disc (3) and the inner wall of the barrel (1).

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