Cement-based composite material processing equipment and application based on cellulose nanofibrils

Abstract

The present invention relates to the technical field of material processing equipment, and discloses a cement-based composite material processing device based on cellulose nanofibrils and its application, comprising a barrel body and a plurality of legs fixedly installed at the bottom of the barrel body, wherein a discharge pipe is fixedly installed at the bottom of the barrel body. The present invention drives the second bevel gear to rotate through a connecting shaft, and the second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the turntable to rotate through a transmission shaft, so that the turntable drives the guide barrel to move to the bottom of the feed pipe, and the cellulose nanofibrils fall into the interior of the barrel body through the through hole and the guide barrel. The device can quantitatively put cellulose nanofibrils into the interior of the barrel body, so that the cellulose nanofibrils can be evenly mixed in cement, thereby avoiding the agglomeration of the cellulose nanofibrils and ensuring the performance of the cement-based composite material of the cellulose nanofibrils.

Description

Technical Field

[0001] The present invention relates to the technical field of material processing equipment, and in particular to cement-based composite material processing equipment based on cellulose nanofibrils and applications. Background Art

[0002] Ultra-high performance cement-based composite materials have excellent mechanical properties and durability, and can be used in facilities engineering in harsh environments, military defense facilities, large-span bridge box girders, etc. In order to achieve a denser matrix structure, ultra-high performance cement-based composite materials require a large amount of cement, and at the same time, the amount of free water must be controlled to reduce pore structure and internal defects.

[0003] Existing cellulose nanofibril cement-based composite material processing equipment has at least the following disadvantages when used:

[0004] Due to the high specific surface area and easy agglomeration of nanofibers, they will form clumps inside the cement when mixed with cement, resulting in the nanofibers being unable to be evenly mixed inside the cement, greatly reducing the performance of the cellulose nanofiber cement-based composite material. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a cement-based composite material processing device based on cellulose nanofibrils and its application.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Cement-based composite material processing equipment based on cellulose nanofibrils and its application, comprising a barrel body and a plurality of legs fixedly installed at the bottom of the barrel body, a discharge pipe fixedly installed at the bottom of the barrel body, a feeding hole is penetrated through the circumferential outer surface of the barrel body near the top, a cover plate is fixedly installed at the top of the barrel body, a mounting frame is fixedly installed on the upper surface of the cover plate, a through hole is penetrated through the upper surface of the mounting frame, a feed pipe is fixedly installed on the upper surface of the mounting frame, the feed pipe is connected with the through hole, and the feed pipe A storage hopper is fixedly installed on the top, and a feeding roller is rotatably installed between the inner walls at two opposite ends of the storage hopper, and a plurality of feeding grooves are equidistantly provided on the circumferential outer surface of the feeding roller, a circular hole is penetrated through the upper surface of the cover plate, a turntable is rotatably installed between the inner walls of the circular hole, and a plurality of drop holes are penetrated through the circumferential direction of the lower surface of the turntable at equal intervals, and a material guide cylinder is fixedly installed near the drop holes on the upper surface of the turntable, and the bottom end of the feeding pipe penetrates the lower surface of the mounting frame and is connected with the feeding end of the material guide cylinder.

[0008] As a further solution of the present invention, a driving motor is fixedly installed on the upper surface of the mounting frame, a first pulley is fixedly installed on the output end of the driving motor, an end of the feed roller close to the first pulley passes through the outer surface of the storage hopper and a second pulley is fixedly installed, and belts are sleeved on the outer surfaces of the first pulley and the second pulley.

[0009] As a further solution of the present invention, a plurality of hollow stirring shafts are equidistantly installed on the circumferential direction of the lower surface of the turntable for rotation, the top end of the hollow stirring shaft passes through the upper surface of the turntable and is fixedly installed with a first gear, the upper surface of the cover plate is fixedly installed with a first annular rack, and the first gear is meshed with the first annular rack.

[0010] As a further scheme of the present invention, a circular hole is opened on the upper surface of the first gear, a bearing is fixedly installed on the inner wall of the circular hole, a stirring shaft is inserted into the interior of the hollow stirring shaft, a spiral stirring blade is fixedly installed on the bottom end of the stirring shaft passing through the bottom of the hollow stirring shaft, the stirring shaft is rotatably mounted on the inner wall of the hollow stirring shaft, the outer surface of the stirring shaft near the top is fixedly mounted on the inner wall of the inner ring of the bearing, a second gear is fixedly installed on the top of the stirring shaft, a second annular rack is fixedly installed on the lower surface of the mounting frame, and the second gear is meshed with the second annular rack.

[0011] As a further solution of the present invention, a support block is fixedly installed on the upper surface of the cover plate, a connecting shaft is rotatably installed on the top of the support block, a second bevel gear is fixedly installed on one end of the connecting shaft, and the other end of the connecting shaft passes through the outer surface of the support block and is fixedly installed on the output end of the drive motor.

[0012] As a further solution of the present invention, a transmission shaft is rotatably installed on the upper surface of the mounting frame, a first bevel gear is fixedly installed on the top of the transmission shaft, the first bevel gear is meshed with the second bevel gear, and the bottom end of the transmission shaft passes through the lower surface of the mounting frame and is fixedly installed on the upper surface of the rotation center of the turntable.

[0013] As a further solution of the present invention, the number of the feeding troughs is the same as the number of the guide cylinders.

[0014] As a further solution of the present invention, the equipment for processing cement-based composite materials based on cellulose nanofibrils is used to prepare cement-based composite materials of cellulose nanofibrils.

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

[0016] The first pulley is driven to rotate by the rotation of the driving motor, and the first pulley drives the second pulley to rotate through the belt, and the second pulley drives the feed roller to rotate, and the feed roller adds the cellulose nanofibrils into the interior of the feed tube in a quantitative manner through the feeding trough. At the same time, the driving motor drives the second bevel gear to rotate through the connecting shaft, and the second bevel gear drives the first bevel gear to rotate, and the first bevel gear drives the turntable to rotate through the transmission shaft, so that the turntable drives the guide barrel to move to the bottom of the feed tube, and the cellulose nanofibrils fall into the interior of the barrel through the through hole and the guide barrel. Through this device, cellulose nanofibrils can be quantitatively added to the interior of the barrel, so that the cellulose nanofibrils can be evenly mixed in the cement, thereby avoiding the agglomeration of the cellulose nanofibrils and ensuring the performance of the cement-based composite material of the cellulose nanofibrils. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the cement-based composite material processing equipment based on cellulose nanofibrils proposed by the present invention;

[0018] Figure 2 A schematic diagram of the internal structure of a cement-based composite material processing device based on cellulose nanofibrils proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the bottom view of the cement-based composite material processing equipment based on cellulose nanofibrils proposed by the present invention;

[0020] Figure 4 A schematic diagram of a second annular rack of the cement-based composite material processing equipment based on cellulose nanofibrils proposed by the present invention;

[0021] Figure 5 A schematic diagram of a first annular rack of a cement-based composite material processing device based on cellulose nanofibrils proposed by the present invention;

[0022] Figure 6 A schematic diagram of a feed roller of a cement-based composite material processing device based on cellulose nanofibrils proposed by the present invention;

[0023] Figure 7 Schematic diagram of the spiral stirring blade of the cement-based composite material processing equipment based on cellulose nanofibrils proposed in the present invention.

[0024] In the figure: 1. barrel; 2. discharge pipe; 3. cover plate; 4. mounting frame; 5. storage hopper; 6. feed roller; 7. feed trough; 8. drive motor; 9. support block; 10. first pulley; 11. second pulley; 12. belt; 13. first bevel gear; 14. second bevel gear; 15. spiral stirring blade; 16. first ring rack; 17. first gear; 18. bearing; 19. second gear; 20. second ring rack; 21. connecting shaft; 22. transmission shaft; 23. guide barrel; 24. through hole; 25. feed pipe; 26. turntable; 27. drop hole; 28. stirring shaft; 29. ​​hollow stirring shaft; 30. support leg. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Reference Figure 1-Figure 7, a cement-based composite material processing device based on cellulose nanofibrils and its application, comprises a barrel body 1 and a plurality of legs 30 fixedly installed at the bottom of the barrel body 1, a discharge pipe 2 is fixedly installed at the bottom of the barrel body 1, a feeding hole is penetrated through the circumferential outer surface of the barrel body 1 near the top, a cover plate 3 is fixedly installed at the top of the barrel body 1, a mounting frame 4 is fixedly installed on the upper surface of the cover plate 3, a through hole 24 is penetrated through the upper surface of the mounting frame 4, a feed pipe 25 is fixedly installed on the upper surface of the mounting frame 4, the feed pipe 25 is connected with the through hole 24, a storage hopper 5 is fixedly installed at the top of the feed pipe 25, a feed roller 6 is rotatably installed between the inner walls at opposite ends of the storage hopper 5, and a plurality of equidistantly provided on the circumferential outer surface of the feed roller 6 A feeding trough 7 is provided, a circular hole is penetrated on the upper surface of the cover plate 3, a turntable 26 is rotatably installed between the inner walls of the circular hole, a plurality of drop holes 27 are equidistantly penetrated in the circumferential direction of the lower surface of the turntable 26, a material guide cylinder 23 is fixedly installed on the upper surface of the turntable 26 near the drop holes 27, the bottom end of the feed pipe 25 penetrates the lower surface of the mounting frame 4 and is connected with the feed end of the material guide cylinder 23, a drive motor 8 is fixedly installed on the upper surface of the mounting frame 4, a first pulley 10 is fixedly installed on the output end of the drive motor 8, the end of the feed roller 6 close to the first pulley 10 penetrates the outer surface of the storage hopper 5 and a second pulley 11 is fixedly installed, and the outer surfaces of the first pulley 10 and the second pulley 11 are sleeved with belts 12.

[0029] The first pulley 10 is driven to rotate by the rotation of the driving motor 8, so that the first pulley 10 drives the second pulley 11 to rotate through the belt 12, and the feed roller 6 is driven to rotate through the second pulley 11, and the feed roller 6 adds the cellulose nanofibrils into the feed pipe 25 in a quantitative manner through the feeding trough 7. At the same time, the driving motor 8 drives the second bevel gear 14 to rotate through the connecting shaft 21, and the second bevel gear 14 drives the first bevel gear 13 to rotate, and the first bevel gear 13 drives the turntable 26 to rotate through the transmission shaft 22, so that the turntable 26 drives the guide barrel 23 to move to the bottom of the feed pipe 25, and the cellulose nanofibrils fall into the interior of the barrel body 1 through the through hole 24 and the guide barrel 23. Through this device, cellulose nanofibrils can be quantitatively added into the interior of the barrel body 1, so that the cellulose nanofibrils can be evenly mixed in the cement, thereby avoiding the agglomeration of the cellulose nanofibrils and ensuring the performance of the cement-based composite material of the cellulose nanofibrils.

[0030] In this embodiment, a plurality of hollow stirring shafts 29 are equidistantly installed in a circumferential direction on the lower surface of the turntable 26, and the top end of the hollow stirring shaft 29 passes through the upper surface of the turntable 26 and is fixedly installed with a first gear 17. A first annular rack 16 is fixedly installed on the upper surface of the cover plate 3, and the first gear 17 is meshed with the first annular rack 16.

[0031] The hollow stirring shaft 29 is driven to rotate by the turntable 26, so that the hollow stirring shaft 29 drives the first gear 17 to rotate, and the first gear 17 drives the hollow stirring shaft 29 to rotate by the first circular rack 16. The stirring shaft 28 is driven to move by the hollow stirring shaft 29, so that the stirring shaft 28 is driven to rotate by the engagement of the second gear 19 and the second circular rack 20. The hollow stirring shaft 29 rotates by itself, so as to prevent the cellulose nanofibrils from adhering to the surface of the hollow stirring shaft 29 and affecting the uniform mixing of the cement-based composite material of the cellulose nanofibrils.

[0032] In this embodiment, a circular hole is opened on the upper surface of the first gear 17, and a bearing 18 is fixedly installed on the inner wall of the circular hole. A stirring shaft 28 is inserted into the interior of the hollow stirring shaft 29, and the bottom end of the stirring shaft 28 passes through the bottom of the hollow stirring shaft 29 and is fixedly installed with a spiral stirring blade 15. The stirring shaft 28 is rotatably installed with the inner wall of the hollow stirring shaft 29, and the outer surface of the stirring shaft 28 near the top is fixedly installed with the inner wall of the inner ring of the bearing 18. The top of the stirring shaft 28 is fixedly installed with a second gear 19, and the lower surface of the mounting frame 4 is fixedly installed with a second annular rack 20, and the second gear 19 is fixedly installed with the second annular rack 20. The ring rack 20 is meshed with each other, a support block 9 is fixedly installed on the upper surface of the cover plate 3, a connecting shaft 21 is rotatably installed on the top of the support block 9, one end of the connecting shaft 21 is fixedly installed with the second bevel gear 14, the other end of the connecting shaft 21 passes through the outer surface of the support block 9 and is fixedly installed with the output end of the drive motor 8, a transmission shaft 22 is rotatably installed on the upper surface of the mounting frame 4, a first bevel gear 13 is fixedly installed on the top of the transmission shaft 22, the first bevel gear 13 is meshed with the second bevel gear 14, and the bottom end of the transmission shaft 22 passes through the lower surface of the mounting frame 4 and is fixedly installed on the upper surface of the rotation center of the turntable 26.

[0033] The stirring shaft 28 is driven to move by the hollow stirring shaft 29, so that the stirring shaft 28 is driven to rotate itself through the meshing of the second gear 19 and the second annular rack 20, so that the stirring shaft 28 drives the spiral stirring blade 15 to rotate, and the cement-based composite material of cellulose nanofibrils can be stirred up and down by the spiral stirring blade 15 to avoid precipitation at the bottom. The hollow stirring shaft 29 is rotated to prevent the cellulose nanofibrils from adhering to the surface of the hollow stirring shaft 29, which affects the uniform mixing of the cement-based composite material of cellulose nanofibrils.

[0034] In this embodiment, the number of the feeding troughs 7 is set to be the same as the number of the material guiding cylinders 23 , thereby ensuring the movement matching between the feeding troughs 7 and the material guiding cylinders 23 .

[0035] In this embodiment, the cellulose nanofibril-based cement-based composite material processing equipment is used to prepare the cellulose nanofibril-based cement-based composite material.

[0036] It should be noted that when the present invention is in use, the operator first adds the cement raw material into the interior of the barrel body 1 through the feeding hole, and then the operator adds the required amount of cellulose nanofibrils into the interior of the storage hopper 5, and drives the first pulley 10 to rotate through the rotation of the driving motor 8, so that the first pulley 10 drives the second pulley 11 to rotate through the belt 12, and drives the feeding roller 6 to rotate through the second pulley 11, and the feeding roller 6 quantitatively adds the cellulose nanofibrils into the interior of the feeding pipe 25 through the feeding trough 7. At the same time, the driving motor 8 drives the second bevel gear 14 to rotate through the connecting shaft 21, and the second bevel gear 14 drives the first bevel gear 13 to rotate, and the first bevel gear 13 drives the turntable 26 to rotate through the transmission shaft 22, so that the turntable 26 drives the guide barrel 23 to move to the bottom of the feed pipe 25, and the cellulose nanofibrils fall into the interior of the barrel body 1 through the through hole 24 and the guide barrel 23. Through this device, the fibers can be quantitatively fed into the interior of the barrel body 1. The cellulose nanofibrils can be evenly mixed in the cement, avoiding the agglomeration of the cellulose nanofibrils and ensuring the performance of the cement-based composite material of the cellulose nanofibrils; the hollow stirring shaft 29 is driven to rotate by the turntable 26, so that the hollow stirring shaft 29 drives the first gear 17 to rotate, and the first gear 17 drives the hollow stirring shaft 29 to rotate by the first circular rack 16, and the stirring shaft 28 is driven to move by the hollow stirring shaft 29, so that the stirring shaft 28 drives itself to rotate through the engagement of the second gear 19 and the second circular rack 20, so that the stirring shaft 28 drives the spiral stirring blade 15 to rotate, and the cement-based composite material of the cellulose nanofibrils can be stirred up and down by the spiral stirring blade 15 to avoid precipitation at the bottom, and the hollow stirring shaft 29 is rotated to avoid the cellulose nanofibrils adhering to the surface of the hollow stirring shaft 29, which affects the uniform mixing of the cement-based composite material of the cellulose nanofibrils.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cement-based composite material processing device based on cellulose nanofibrils, comprising a barrel (1) and a plurality of legs (30) fixedly mounted on the bottom of the barrel (1), characterized in that: A discharge pipe (2) is fixedly mounted on the bottom of the barrel body (1); a feeding hole is formed through the circumferential outer surface of the barrel body (1) near the top; a cover plate (3) is fixedly mounted on the top of the barrel body (1); a mounting frame (4) is fixedly mounted on the upper surface of the cover plate (3); a through hole (24) is formed through the upper surface of the mounting frame (4); a feed pipe (25) is fixedly mounted on the upper surface of the mounting frame (4); the feed pipe (25) is connected to the through hole (24); a storage hopper (5) is fixedly mounted on the top of the feed pipe (25); a feed roller (6) is rotatably mounted between the inner walls at opposite ends of the storage hopper (5); a plurality of feed grooves (7) are formed at equal intervals on the circumferential outer surface of the feed roller (6); A circular hole is formed through the upper surface of the cover plate (3), a turntable (26) is rotatably mounted between the inner walls of the circular hole, a plurality of drop holes (27) are formed through the lower surface of the turntable (26) at equal intervals in the circumferential direction, a material guide cylinder (23) is fixedly mounted at positions near the drop holes (27) on the upper surface of the turntable (26), the bottom end of the feed pipe (25) passes through the lower surface of the mounting frame (4) and is connected to the feed end of the material guide cylinder (23), a drive motor (8) is fixedly mounted on the upper surface of the mounting frame (4), a first pulley (10) is fixedly mounted on the output end of the drive motor (8), and a second pulley (25) is fixedly mounted on the outer surface of the storage hopper (5) at one end of the feed roller (6) near the first pulley (10) The first belt pulley (11) and the second belt pulley (11) are sleeved with a belt (12) on their outer surfaces; a plurality of hollow stirring shafts (29) are equidistantly mounted on the lower surface of the turntable (26) in a circumferential direction; the top end of the hollow stirring shaft (29) passes through the upper surface of the turntable (26) and is fixedly mounted with a first gear (17); the upper surface of the cover plate (3) is fixedly mounted with a first annular rack (16); the first gear (17) is meshed with the first annular rack (16); a circular hole is formed on the upper surface of the first gear (17); a bearing (18) is fixedly mounted on the inner wall of the circular hole; a stirring shaft (28) is inserted into the interior of the hollow stirring shaft (29); the bottom of the stirring shaft (28) is fixedly mounted with a first gear (17); the first gear (17) is meshed with the first annular rack (16); a circular hole is formed on the upper surface of the first gear (17); a bearing (18) is fixedly mounted on the inner wall of the circular hole; a stirring shaft (28) is inserted into the interior of the hollow stirring shaft (29); and the bottom of the stirring shaft (28) is fixedly mounted with a first gear (16); A spiral stirring blade (15) is fixedly installed at the bottom of the hollow stirring shaft (29) penetrating through the end thereof; the stirring shaft (28) is rotatably mounted on the inner wall of the hollow stirring shaft (29); the outer surface of the stirring shaft (28) near the top is fixedly mounted on the inner wall of the inner ring of the bearing (18); a second gear (19) is fixedly installed at the top of the stirring shaft (28); a second annular rack (20) is fixedly installed on the lower surface of the mounting frame (4); the second gear (19) is meshed with the second annular rack (20); a support block (9) is fixedly installed on the upper surface of the cover plate (3); a connecting shaft (21) is rotatably mounted on the top of the support block (9); a second bevel gear (14) is fixedly installed at one end of the connecting shaft (21);The other end of the connecting shaft (21) passes through the outer surface of the support block (9) and is fixedly mounted on the output end of the driving motor (8); a transmission shaft (22) is rotatably mounted on the upper surface of the mounting frame (4); a first bevel gear (13) is fixedly mounted on the top of the transmission shaft (22); the first bevel gear (13) is meshed with the second bevel gear (14); and the bottom end of the transmission shaft (22) passes through the lower surface of the mounting frame (4) and is fixedly mounted on the upper surface of the rotation center of the turntable (26).

2. The cement-based composite material processing equipment based on cellulose nanofibrils according to claim 1, characterized in that: The number of the feeding troughs (7) is the same as the number of the material guiding cylinders (23).

3. The use of the cement-based composite material processing equipment based on cellulose nanofibrils according to any one of claims 1-2, characterized in that: Used in the preparation of cement-based composite materials of cellulose nanofibrils.

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