A novel paper dispersing device

Abstract

This utility model discloses a novel papermaking dispersion device, relating to the field of paper processing technology. It includes a papermaking trough with a reverse stirring mechanism inside. The reverse stirring mechanism is used to stir the pulp inside the trough. The reverse stirring mechanism includes rotating rods rotatably connected to two side walls of the trough. Several propellers are fixedly connected to the outer walls of each rotating rod. A bevel gear is fixedly connected to one opposite end of each rotating rod. Two bevel gears are rotatably connected via a connecting ring. This utility model further disperses fibers through bidirectional convection via the reverse stirring mechanism. A servo motor drives the drive shaft to rotate, causing the bevel gears to rotate. Through perpendicular meshing with the two bevel gears, the rotating rods on both sides rotate in opposite directions. The propellers on the rotating rods generate an axial and radial composite flow field, forming a bidirectional convection circulation within the papermaking trough. This avoids the problem of uneven pulp dispersion caused by uneven manual stirring.

Description

Technical Field

[0001] This utility model relates to the field of paper processing technology, specifically a novel paper dispersing device. Background Technology

[0002] Papermaking technology is mainly divided into two types based on different process principles, equipment scale, and development stages: manual papermaking and machine papermaking. Papermaking dispersion equipment refers to special equipment used in the papermaking process to evenly disperse fiber raw materials in water to form a stable pulp and prevent fiber flocculation or sedimentation. Manual papermaking first softens raw materials, such as bark and bamboo, by soaking and cooking, then disperses them into fiber pulp through a pulping machine. The pulp is then scooped up with a bamboo screen to make the fibers evenly adhere to the screen surface. After filtering out the water, excess water is pressed out, and finally, the paper is dried or baked to form a paper with a unique texture.

[0003] Before papermaking, operators typically need to use wooden paddles or bamboo rakes to stir the pulp clockwise or counterclockwise in the papermaking vat to create a vortex, which allows the fibers to be evenly dispersed in the water. However, the strength, speed, and depth of manual stirring are difficult to be completely consistent, which can easily lead to local over-stirring or under-stirring. Under-stirring will cause the fibers to clump together, resulting in uneven paper thickness, a rough surface, and ultimately, unusable finished paper. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a new type of papermaking dispersion equipment, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel papermaking dispersion device includes a papermaking trough. A reverse stirring mechanism is provided inside the papermaking trough to stir the slurry inside. The reverse stirring mechanism includes rotating rods rotatably connected to two side walls of the papermaking trough. Several propellers are fixedly connected to the outer walls of each rotating rod. A bevel gear is fixedly connected to one opposite end of each rotating rod. Two bevel gears are rotatably connected via a connecting ring. A drive shaft is rotatably provided on the rear inner wall of the papermaking trough. A bevel gear is fixedly connected to one end of the drive shaft located inside the papermaking trough. The bevel gear meshes with two bevel gears. A servo motor is provided on the outside of the papermaking trough. The drive shaft is fixedly connected to the output end of the servo motor at one end located outside the papermaking trough.

[0006] The lower inner surface of the papermaking trough is provided with a bubble generating mechanism, which is used to inject bubbles into the pulp.

[0007] The bubble generating mechanism includes a grid tube disposed on the lower inner surface of the paper forming trough, a plurality of nozzles fixedly connected to the grid tube, an injection pipe fixedly connected to one side of the rear end of the grid tube, an air compressor disposed on the outside of the paper forming trough, and the other end of the injection pipe passing through the paper forming trough and fixedly connected to the output end of the air compressor.

[0008] The papermaking trough has a fine mesh installed on the inner side of the upper end of the grid tube, and the fine mesh is detachably connected to the papermaking trough.

[0009] The papermaking trough has a mounting plate fixedly connected to its top rear end. A pulping device is mounted on the mounting plate to produce pulp. The pulping device includes a pulverizing tank mounted on the mounting plate. A feeding port is provided on one side of the top of the pulverizing tank. A connecting pipe is fixedly connected to the bottom of the pulverizing tank. The end of the connecting pipe is connected to the papermaking trough. A manual butterfly valve is provided on the connecting pipe. A pulverizing mechanism is provided inside the pulverizing tank to pulverize the papermaking raw materials.

[0010] The crushing mechanism includes a drive motor mounted on the top of the crushing tank, a rotating shaft rotatably mounted inside the crushing tank, the top of the rotating shaft passing through the crushing tank and fixedly connected to the output end of the drive motor, and a crushing blade fixedly connected to the outer wall of the rotating shaft.

[0011] The paper forming trough has a placement plate fixedly connected to the top of its front end, a canopy fixedly connected to the top of its top end, a suspension ring fixedly connected to the middle of the lower surface of the canopy, and a wet paper forming device provided below the suspension ring.

[0012] The wet paper forming device includes a paper forming screen located below the suspension ring. The paper forming screen has suspension ropes at both ends, which pass through the suspension ring. A handle is fixedly connected to the front end of the paper forming screen. When the handle is pulled, the paper forming screen slides outward along the paper forming groove.

[0013] This utility model provides a novel papermaking dispersion device, which has the following beneficial effects:

[0014] 1. This utility model uses a reverse stirring mechanism to further disperse fibers through bidirectional convection. A servo motor drives the drive shaft to rotate, which in turn drives the second bevel gear to rotate. Through perpendicular meshing with the two first bevel gears, the rotating rods on both sides rotate in opposite directions. The propellers on the rotating rods generate a composite axial and radial flow field, forming a bidirectional convection circulation in the papermaking trough. This avoids the problem of uneven pulp dispersion caused by uneven manual stirring.

[0015] 2. This utility model uses a bubble generating mechanism to generate microbubbles to suspend the fibers. An air compressor generates compressed air, which is delivered to the mesh tube through an injection pipe. The air is cut into microbubbles by the densely distributed nozzles on the mesh tube and injected into the slurry. During the rising process of the microbubbles, the buoyancy and the micro-jet generated by the rupture cause the fibers to float up and down, thus avoiding fiber sedimentation in the slurry. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0018] Figure 3 This is a side sectional view of the papermaking trough structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the reverse stirring mechanism of this utility model;

[0020] Figure 5 This is a side sectional view of the crushing tank of this utility model.

[0021] In the diagram: 1. Papermaking trough; 11. Canopy; 12. Suspension ring; 13. Placement plate; 14. Mounting plate; 2. Reverse stirring mechanism; 21. Rotating rod; 22. Propeller; 23. Bevel gear one; 24. Connecting ring; 25. Drive shaft; 26. Bevel gear two; 27. Servo motor; 3. Bubble generating mechanism; 31. Grid tube; 32. Nozzle; 33. Injection pipe; 34. Air compressor; 4. Fine screen; 5. Pulping device; 51. Crushing tank; 52. Connecting pipe; 53. Manual butterfly valve; 54. Crushing mechanism; 541. Drive motor; 542. Rotating shaft; 543. Crushing blade; 6. Wet paper sheet forming device; 61. Papermaking curtain; 62. Suspension rope; 63. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figures 1 to 5This utility model provides a technical solution: a novel papermaking dispersion device, including a papermaking trough 1, a reverse stirring mechanism 2 is provided inside the papermaking trough 1, the reverse stirring mechanism 2 is used to stir the slurry inside the papermaking trough 1, the reverse stirring mechanism 2 includes rotating rods 21 rotatably connected to two side walls of the papermaking trough 1, several propellers 22 are fixedly connected to the outer walls of the rotating rods 21, and bevel gears 23 are fixedly connected to opposite ends of the rotating rods 21, the two bevel gears 23 are rotatably connected to each other through a connecting ring 24, a drive shaft 25 is rotatably provided on the rear inner wall of the papermaking trough 1, a bevel gear 26 is fixedly connected to one end of the drive shaft 25 located inside the papermaking trough 1, the bevel gear 26 meshes with the two bevel gears 23, a servo motor 27 is provided on the outside of the papermaking trough 1, and the output end of the drive shaft 25 located on the outside of the papermaking trough 1 is fixedly connected to the output end of the servo motor 27;

[0024] The servo motor 27 is mounted on the outer wall of the papermaking trough 1 via a mounting bracket. As the core power component, it is rigidly connected to the drive shaft 25 through a precision coupling, enabling it to output stable and adjustable torque. When the servo motor 27 operates, the drive shaft 25 rotates accordingly, and the bevel gear 26 mounted at its end rotates synchronously. The bevel gear 26 and the two bevel gears 23 form a vertical meshing transmission, precisely transmitting the rotational power at a 90-degree angle. This drives the rotating rods 21 on both sides of the papermaking trough 1 to rotate in opposite directions. The propellers 22 evenly distributed on the surface of the rotating rods 21 adopt a biomimetic curved surface design. During high-speed rotation, they not only generate strong axial thrust but also form controllable radial vortices. The two superimposed on each other in the papermaking trough 1 construct a bidirectional convection circulation flow field. This flow field, through continuous turbulent stirring, can effectively overcome the problem of uneven pulp concentration distribution in traditional papermaking equipment, suppress fiber sedimentation and flocculation, and significantly improve the uniformity and stability of pulp dispersion, laying the foundation for high-quality paper forming.

[0025] Among them, a bubble generating mechanism 3 is provided on the lower inner surface of the papermaking trough 1. The bubble generating mechanism 3 is used to inject bubbles into the pulp.

[0026] The bubble generating mechanism 3 adopts a modular integrated design, consisting of four core components: grid tube 31, nozzle 32, injection pipe 33, and air compressor 34. These components work together to drive the fibers in the slurry to rise and fall and continuously tumble, forming a three-dimensional circulating flow field.

[0027] Among them, the bubble generating mechanism 3 includes a grid tube 31 set on the lower inner surface of the paper forming trough 1, a number of nozzles 32 are fixedly connected to the grid tube 31, an injection tube 33 is fixedly connected to one side of the rear end of the grid tube 31, an air compressor 34 is set on the outside of the paper forming trough 1, and the other end of the injection tube 33 passes through the paper forming trough 1 and is fixedly connected to the output end of the air compressor 34.

[0028] Air compressor 34 serves as the air source device, outputting a stable airflow through precise pressure control. This airflow is then directed to the grid tube 31 via injection pipe 33. The top of the grid tube 31 is densely covered with uniformly arranged mounting holes, which fit tightly into the nozzle 32. Its porous flow distribution structure can evenly distribute the airflow to each nozzle. The nozzle 32 adopts a biomimetic micropore design, which can convert compressed air into fine bubbles with a diameter of micrometers. These bubbles are injected into the slurry in a high-speed jet manner. During their ascent, these bubbles generate strong disturbance, causing the fibers in the slurry to rise and fall and continuously tumble, forming a three-dimensional circulating flow field. This fundamentally prevents fiber sedimentation, significantly improves the mixing uniformity and stability of the slurry, and provides high-quality raw material conditions for subsequent production processes.

[0029] Among them, a fine mesh 4 is provided on the inner side of the paper forming trough 1 at the upper end of the grid tube 31, and the fine mesh 4 is detachably connected to the paper forming trough 1.

[0030] The fine wire 4 is installed directly above the grid tube 31 with a modular and detachable structure. It is precisely connected to the side wall of the papermaking trough 1 through a snap-fit ​​quick-connect component, which facilitates quick disassembly and maintenance. The fine wire is woven from high-strength stainless steel wire, and the mesh size is precisely designed to ensure that the fine water flow can pass through smoothly, while effectively intercepting the crushed fibers. When the pulp flows through the fine wire 4, the water flow quickly seeps down through the mesh gaps, while the fibers are evenly spread and retained on the wire surface, achieving efficient solid-liquid separation and providing an ideal raw material layer with uniform fiber distribution for subsequent papermaking processes.

[0031] Among them, the top of the rear end of the papermaking trough 1 is fixedly connected to the mounting plate 14, and the mounting plate 14 is equipped with a pulping device 5. The pulping device 5 is used to manufacture pulp. The pulping device 5 includes a crushing tank 51 set on the mounting plate 14. A feeding port is opened on one side of the top of the crushing tank 51. A connecting pipe 52 is fixedly connected to the bottom of the crushing tank 51. The end of the connecting pipe 52 is connected to the papermaking trough 1. A manual butterfly valve 53 is set on the connecting pipe 52. A crushing mechanism 54 is set inside the crushing tank 51. The crushing mechanism 54 is used to crush the papermaking raw materials.

[0032] Papermaking raw materials are fed into the crushing tank 51 through the feeding port at the top. The crushing mechanism 54 built into the tank operates at high speed under the strong power output of the drive motor 541. Through the cooperation of the precisely designed blade assembly and the grinding chamber, the raw materials are gradually crushed and refined until they become uniform fine fibers. The crushed fibers are transported along the connecting pipe 52 under the combined action of gravity and air pressure. The manual butterfly valve 53 set in the middle of the pipeline can realize precise flow control. The operator can flexibly control the speed and amount of fibers entering the papermaking vat 1 by adjusting the opening of the manual butterfly valve 53, so as to ensure the stable operation of the papermaking process.

[0033] The crushing mechanism 54 includes a drive motor 541 installed at the top of the crushing tank 51, a rotating shaft 542 rotatably installed inside the crushing tank 51, the top end of the rotating shaft 542 passing through the crushing tank 51 and fixedly connected to the output end of the drive motor 541, and a crushing blade 543 fixedly connected to the outer wall of the rotating shaft 542.

[0034] The drive motor 541 serves as the core power source, rigidly connected to the rotating shaft 542 via a high-precision coupling to achieve zero-backlash, efficient power transmission. Driven by the motor's strong torque, the rotating shaft 542 carries the crushing blade 543 at extremely high speeds, creating a powerful centrifugal force field inside the crushing tank 51. The crushing blade 543, made of high-strength alloy material, features a sharp edge and a special blade angle design. Combined with the high-speed rotation of the rotating shaft, it continuously cuts, tears, and grinds the raw materials fed into the tank. As the crushing process progresses, the raw materials gradually break down into fine fibers. Once the preset fiber fineness standard is reached, the operator manually adjusts the butterfly valve 53 to open the pipeline channel. Under the influence of gravity and airflow, the crushed fibers are discharged in an orderly manner through the connecting pipe 52 and enter subsequent processing steps.

[0035] Among them, a placement plate 13 is fixedly connected to the top of the front end of the paper forming trough 1, a canopy 11 is fixedly connected to the top of the paper forming trough 1, a hanging ring 12 is fixedly connected to the middle of the lower surface of the canopy 11, and a wet paper sheet forming device 6 is provided below the hanging ring 12.

[0036] The suspension ring 12 is made of high-strength metal and is integrally molded to provide reliable suspension support for the papermaking screen 61. The papermaking screen 61 is a key forming component in the entire papermaking process. It can effectively trap fibers suspended in the pulp and make the fibers intertwine to form a uniform thin layer, thereby producing a wet paper sheet with a specific thickness and density.

[0037] The wet paper forming device 6 includes a paper forming curtain 61 set below the suspension ring 12. The paper forming curtain 61 has suspension ropes 62 at both ends. The suspension ropes 62 pass through the suspension ring 12. The front end of the paper forming curtain 61 is fixedly connected to a handle 63. When the handle 63 is pulled, the paper forming curtain 61 slides outward along the paper forming groove 1.

[0038] The handle 63 is ergonomically designed with a non-slip rubber surface, providing operators with a comfortable and stable grip. It serves as a key point of leverage for precise control of the papermaking screen 61. It is securely connected to the top of the papermaking screen 61 via a durable and wear-resistant suspension rope 62. Under the operator's traction, the papermaking screen 61 slides smoothly along the high-precision guide rail pre-set on the side wall of the papermaking trough 1, slowly immersing itself in the pulp. The papermaking screen 61 is composed of a special woven mesh and a reinforced frame, possessing both excellent water filtration performance and fiber adsorption capacity. When in full contact with the pulp, the fine mesh quickly filters out water while uniformly adsorbing and weaving suspended fibers into layers. Once the fiber adsorption reaches the ideal state, the operator applies force again through the handle 63 to smoothly pull the papermaking screen 61 along the guide rail, transferring it to a dedicated placement plate 13. As the remaining water further drains, the wet paper sheet is successfully formed, completing the crucial conversion process from pulp to paper.

[0039] After the equipment is started, the papermaking raw materials are fed into the special feeding port on the outer wall of the crushing tank 51. The top drive motor 541 rotates at a preset speed at high speed. With the help of a high-precision coupling and transmission system, the drive motor 541 drives the rotating shaft 542 to rotate synchronously. The crushing blades 543 fixed on the outer wall of the rotating shaft 542 are arranged in a spiral staggered array. Through high-frequency cutting, tearing and grinding, the raw materials are quickly crushed into micron-sized fibers. The operator manually opens the butterfly valve 53 on the connecting pipe 52. Under the drive of gravity, the crushed fibers fall precisely along the pipeline onto the surface of the stainless steel fine mesh 4 in the papermaking tank 1. The fine mesh 4 adopts a precision weaving process, and its gap width is strictly calculated to ensure that water can penetrate quickly and efficiently intercept fibers, preventing them from sinking to the bottom of the tank and accumulating.

[0040] Subsequently, clean water is injected into the papermaking trough 1. When the water level overflows the bubble nozzles 32, the air compressor 34 automatically starts, delivering compressed air through the injection pipe 33 to the grid tube 31. The bubble nozzles 32, densely packed around the grid tube 31, adopt a biomimetic micropore design, which can cut the airflow into fine bubbles with a diameter of micrometers and inject them evenly into the liquid medium. During the rising process, the microbubbles, due to buoyancy and the micro-jet effect generated when they burst, drive the fibers in the pulp to circulate up and down, forming a dynamic suspension effect, effectively inhibiting fiber deposition. During this process, the reverse stirring mechanism 2 and the bubble generating mechanism 3 enter a cooperative working mode. The servo motor 27 drives the drive shaft 25 to rotate through a precision transmission device. The bevel gear 26 at the end of the drive shaft 25 rotates accordingly and forms a high-efficiency transmission with two bevel gears 23 that mesh perpendicularly at 90°. Under the precise drive of the gear set, the rotating rods 21 on both sides of the papermaking trough 1 rotate at high speed in opposite directions. The propellers 22 installed on the outer wall of the rotating rods 21 Through biomimetic curved surface design, a composite axial and radial flow field is generated, creating a strong bidirectional convection circulation within the tank. This convection field, combined with the rising bubble flow, forms a high-intensity turbulence effect, effectively breaking up fiber agglomerates and significantly improving the uniformity of fiber distribution in the pulp, completely eliminating pulp stratification. Once the pulp mixing reaches an ideal state, the operator holds the ergonomic handle 63 of the wet paper sheet forming device 6 and, through the flexible traction system of the suspension rope 62, smoothly immerses the papermaking screen 61 into the pulp. The papermaking screen 61, with its special woven mesh and reinforced frame structure, possesses both excellent water filtration performance and fiber adsorption capacity. After fully adsorbing the pulp, the papermaking screen 61 is pulled out at a uniform speed and placed on the placement plate 13. At this point, a layer of wet paper with uniform thickness and dense fiber distribution has been formed, ready to proceed directly to subsequent key papermaking processes such as vacuum dewatering and hot-press drying. This equipment utilizes a reverse stirring mechanism 2 and a bubble generating mechanism 3. The innovative linkage design fundamentally solves the technical problems of pulp sedimentation and stratification in traditional papermaking processes, providing a solid guarantee for the stable production of high-quality paper.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new type of papermaking dispersing device comprising a papermaking tank (1), characterized in that: A reverse stirring mechanism (2) is provided inside the papermaking trough (1). The reverse stirring mechanism (2) is used to stir the slurry inside the papermaking trough (1). The reverse stirring mechanism (2) includes rotating rods (21) rotatably connected to the two side walls of the papermaking trough (1). Several propellers (22) are fixedly connected to the outer walls of the rotating rods (21). A bevel gear (23) is fixedly connected to one end of the rotating rods (21). The two bevel gears (23) are rotatably connected to each other through a connecting ring (24). A drive shaft (25) is rotatably provided on the inner wall of the rear side of the papermaking trough (1). A bevel gear (26) is fixedly connected to one end of the drive shaft (25) located inside the papermaking trough (1). The bevel gear (26) meshes with the two bevel gears (23). A servo motor (27) is provided on the outer side of the papermaking trough (1). The drive shaft (25) is fixedly connected to the output end of the servo motor (27) at one end located outside the papermaking trough (1).

2. A new type of papermaking dispersing equipment according to claim 1, characterized in that: A bubble generating mechanism (3) is provided on the lower inner surface of the papermaking trough (1), which is used to inject bubbles into the pulp.

3. A new type of papermaking dispersing equipment according to claim 2, characterized in that: The bubble generating mechanism (3) includes a grid tube (31) disposed on the lower inner surface of the paper forming trough (1), a plurality of nozzles (32) are fixedly connected to the grid tube (31), an injection tube (33) is fixedly connected to one side of the rear end of the grid tube (31), an air compressor (34) is disposed on the outside of the paper forming trough (1), and the other end of the injection tube (33) passes through the paper forming trough (1) and is fixedly connected to the output end of the air compressor (34).

4. A new type of papermaking dispersing equipment according to claim 3, characterized in that: A fine mesh (4) is provided on the inner side of the papermaking trough (1) at the upper end of the grid tube (31), and the fine mesh (4) is detachably connected to the papermaking trough (1).

5. A novel papermaking dispersion device according to claim 1, characterized in that: A mounting plate (14) is fixedly connected to the top of the rear end of the papermaking trough (1). A pulping device (5) is provided on the mounting plate (14). The pulping device (5) is used to manufacture pulp. The pulping device (5) includes a crushing tank (51) provided on the mounting plate (14). A feeding port is provided on one side of the top of the crushing tank (51). A connecting pipe (52) is fixedly connected to the bottom of the crushing tank (51). The end of the connecting pipe (52) is connected to the papermaking trough (1). A manual butterfly valve (53) is provided on the connecting pipe (52). A crushing mechanism (54) is provided inside the crushing tank (51). The crushing mechanism (54) is used to crush the papermaking raw materials.

6. A new type of papermaking dispersing equipment according to claim 5, characterized in that: The crushing mechanism (54) includes a drive motor (541) installed at the top of the crushing tank (51). A rotating shaft (542) is rotatably installed inside the crushing tank (51). The top of the rotating shaft (542) passes through the crushing tank (51) and is fixedly connected to the output end of the drive motor (541). A crushing blade (543) is fixedly connected to the outer wall of the rotating shaft (542).

7. A new type of papermaking dispersing equipment according to claim 1, characterized in that: A placement plate (13) is fixedly connected to the top of the front end of the papermaking trough (1), a canopy (11) is fixedly connected to the top of the papermaking trough (1), a hanging ring (12) is fixedly connected to the middle of the lower surface of the canopy (11), and a wet paper sheet forming device (6) is provided below the hanging ring (12).

8. A new type of papermaking dispersing equipment according to claim 7, characterized in that: The wet paper forming device (6) includes a paper forming curtain (61) set below the suspension ring (12). The paper forming curtain (61) has suspension ropes (62) at both ends. The suspension ropes (62) pass through the suspension ring (12). The front end of the paper forming curtain (61) is fixedly connected to a handle (63). When the handle (63) is pulled, the paper forming curtain (61) slides outward along the paper forming groove (1).

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