Paper pulp crushing and mixing device

Abstract

The utility model is suitable for the technical field of paper pulp manufacturing process, and provides a paper pulp crushing and mixing device which comprises a barrel body, a toothed spiral rotor and a sieve plate which is matched with the toothed spiral rotor and has a filtering function, the toothed spiral rotor is conical, is mounted at the bottom of the barrel and can rotate freely; the toothed spiral rotor comprises a core shaft, toothed spiral blades arranged on the core shaft and a base plate. Therefore, a common spiral rotor is changed into the spiral rotor with the teeth, the spiral rotor with the teeth is conical, the waste paper can be quickly crushed, meanwhile, the pulp property of the waste paper can be kept, the spiral rotor with the teeth avoids crushing impurities and stickies in the paper pulp crushing process, and the problems of follow-up removal of the stickies and the impurities and the like are solved. And the working efficiency is greatly improved, and energy conservation and consumption reduction are realized.

Description

Technical Field

[0001] This utility model relates to the field of pulp manufacturing technology, and in particular to a pulp crushing and mixing device. Background Technology

[0002] Pulp, as a pollution-free, recyclable, biodegradable, and high-performance green product, is widely used in the pulp molding industry. Existing pulping machines suffer from low pulping efficiency, high energy consumption, some damage to fibers during the pulping process, poor pulp quality, and the breaking down of impurities and adhesives during pulp crushing, which is not conducive to the subsequent removal of adhesives and impurities.

[0003] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this invention is to provide a pulp crushing and mixing device with a toothed helical rotor in a conical shape. The toothed helical rotor reduces rotor weight, and its notches avoid and eliminate obstacles in the double-vortex pulping process, reducing motion resistance, enhancing the shear force of the pulping impeller and the double-vortex diffusion crushing capability, lowering motor energy consumption, and improving pulping efficiency. Simultaneously, it alleviates mechanical damage to fibers during the pulping process, protecting fiber properties, and almost completely eliminates impurities and adhesives, facilitating subsequent removal of adhesives and impurities, improving pulp quality, and significantly increasing work efficiency.

[0005] To achieve the above objectives, this utility model provides a pulp crushing and mixing device, including a cylinder, a toothed spiral rotor, and a sieve plate with a filtering function that cooperates with the toothed spiral rotor; the toothed spiral rotor includes a spindle, toothed spiral blades and a base plate disposed on the spindle; the toothed spiral rotor is installed at the bottom of the cylinder and can rotate freely.

[0006] According to the pulp crushing and mixing device of this utility model, the toothed spiral rotor is conical.

[0007] According to the pulp crushing and mixing device of this utility model, the mandrel is installed at the bottom of the cylinder, passes through the screen plate, and is located at the center of the screen plate.

[0008] According to the pulp crushing and mixing device of this utility model, the toothed spiral blades arranged on the mandrel are distributed circumferentially around the mandrel and connected to the mandrel, and there are three or more blades.

[0009] According to the pulp crushing and mixing device of this utility model, the chassis set on the mandrel is connected to the mandrel, and its bottom is located above the screen plate surface but is not connected to the screen plate.

[0010] According to the pulp crushing and mixing device of this utility model, the base plate set on the mandrel has a diameter larger than the diameter of the toothed spiral blade, is connected to it, and is located at its bottom.

[0011] According to the pulp crushing and mixing device of this utility model, the bottom of the cylinder is an inclined surface, and an installation hole is provided at the bottom. At least one guide plate is arranged circumferentially around the installation hole at the bottom of the cylinder.

[0012] According to the pulp crushing and mixing device of this utility model, the guide plate is triangular in shape.

[0013] The pulp crushing and mixing device according to this utility model is characterized in that the sieve plate has an annular perforated structure.

[0014] This invention provides a pulp crushing and mixing device, comprising a cylinder, a toothed spiral rotor, and a sieve plate with a filtering function that cooperates with the toothed spiral rotor. The toothed spiral rotor is conical, installed at the bottom of the cylinder, and can rotate freely. The toothed spiral rotor includes a core shaft, toothed spiral blades mounted on the core shaft, and a base. The conical toothed spiral rotor generates two shear forces, namely mechanical shear force and water shear force, which enables waste paper and other materials to be quickly drawn into the circulating flow. The toothed spiral blades reduce the rotor's weight, and their notches avoid and eliminate obstacles in the double-vortex pulping process, reducing motion resistance, enhancing the shear force of the toothed spiral blades and the double-vortex diffusion crushing ability, reducing motor energy consumption, and improving pulping efficiency. At the same time, it alleviates mechanical damage to fibers during the pulping process, protects fiber properties, and almost completely breaks down impurities and adhesives, which is beneficial for subsequent removal of adhesives and impurities, improving pulp quality and greatly increasing work efficiency. The bottom of the cylinder is an inclined surface, and at least one guide plate is arranged circumferentially around the mounting hole. The shape is triangular. The triangular guide plate can hinder the circumferential movement of the slurry, promote the slurry on the outer edge to flow towards the center of the rotor, and accelerate the slurry fragmentation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is another schematic diagram of the present invention.

[0017] In the figure, 1-cylinder, 2-toothed spiral rotor, 3-screen plate, 4-core shaft, 5-toothed spiral blade, 6-chassis, 7-guide plate, 8-fixed tray. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] See Figure 1 , Figure 2 This utility model provides a pulp crushing and mixing device, which includes a cylinder 1, a toothed spiral rotor 2, and a sieve plate 3 with a filtering function that cooperates with the toothed spiral rotor. The toothed spiral rotor is conical, installed at the bottom of the cylinder 1, and can rotate freely. The toothed spiral rotor includes a spindle 4, toothed spiral blades 5 disposed on the spindle, and a base 6. The spindle 4 is installed at the bottom of the cylinder 1, passes through the sieve plate 3, and is located at the center of the sieve plate. The toothed spiral blades 5 disposed on the spindle are distributed circumferentially around the spindle 4 and are connected to the spindle 4, with three or more blades. The base 6 disposed on the spindle is connected to the spindle 4, and its bottom is located above the sieve plate surface but not connected to the sieve plate 3. The diameter of the base 6 disposed on the spindle is larger than the diameter of the toothed spiral blades 5, and is connected to them, located at its bottom. The conical toothed helical rotor generates two shearing forces: mechanical shearing and water shearing. This allows waste paper and other materials to be quickly drawn into the circulating flow. The toothed helical blades reduce the rotor's weight, and their notches avoid and eliminate obstacles in the double-vortex pulping process, reducing motion resistance and enhancing the shearing force of the toothed helical blades and the diffusion and fragmentation capabilities of the double-vortex. This reduces motor energy consumption and improves pulping efficiency. At the same time, it alleviates mechanical damage to fibers during the pulping process, protecting fiber properties. Furthermore, impurities and adhesives are almost completely broken down, which is beneficial for subsequent removal of adhesives and impurities, improving pulp quality and significantly increasing work efficiency.

[0022] In addition, the bottom of the cylinder 1 of this utility model is an inclined surface, and the cylinder has a large effective pulping volume. The bottom is provided with a mounting hole, and a guide plate 7 is arranged circumferentially around the mounting hole at the bottom of the cylinder. The guide plate 7 is triangular in shape. The triangular guide plate can hinder the circumferential movement of the pulp, promote the pulp on the outer edge to flow towards the center of the rotor, and accelerate the pulping.

[0023] Furthermore, the sieve plate 3 of this invention has an annular structure with round holes. The main function of the sieve holes on the sieve plate is to screen out coarse impurities in the pulp. During the pulping process, the sieve holes can separate the pulped pulp from the impurities, allowing the pulp to pass through smoothly, while larger impurities are retained on the sieve holes, thereby purifying the pulp. This design helps improve the quality of the pulp and ensures the smooth progress of subsequent processes. In this invention, there is a gap between the sieve plate 3 and the rotor tray. Below the rotor tray is a fixed tray 8 with a diameter larger than the rotor tray, which is used to fix one side of the sieve plate.

[0024] In summary, this utility model provides a pulp crushing and mixing device, including a cylinder, a toothed spiral rotor, and a sieve plate with a filtering function that cooperates with the toothed spiral rotor. The toothed spiral rotor is conical, installed at the bottom of the cylinder, and can rotate freely. The toothed spiral rotor includes a core shaft, toothed spiral blades disposed on the core shaft, and a base. The conical toothed spiral rotor generates two shear forces, namely mechanical shear force and water shear force, which enables waste paper and other materials to be quickly drawn into the circulating flow. The toothed spiral blades reduce the rotor's weight, and their notches avoid and eliminate obstacles in the double-vortex pulping process, reducing motion resistance, enhancing the shear force of the toothed spiral blades and the double-vortex diffusion crushing ability, reducing motor energy consumption, and improving pulping efficiency. At the same time, it alleviates the mechanical damage to fibers during the pulping process, protects fiber properties, and almost completely breaks down impurities and adhesives, which is beneficial for subsequent removal of adhesives and impurities, improving pulp quality and greatly increasing work efficiency. The bottom of the cylinder is an inclined surface, and at least one guide plate is arranged circumferentially around the mounting hole. The shape is triangular. The triangular guide plate can hinder the circumferential movement of the slurry, promote the slurry on the outer edge to flow towards the center of the rotor, and accelerate the slurry fragmentation.

[0025] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A pulp crushing and mixing device, characterized in that, It includes a cylindrical body, a toothed spiral rotor, and a sieve plate with filtering function that cooperates with the toothed spiral rotor; The toothed helical rotor includes a spindle, toothed helical blades mounted on the spindle, and a chassis. The toothed helical rotor is installed at the bottom of the cylinder and can rotate freely.

2. The pulp crushing and mixing device according to claim 1, characterized in that, The toothed helical rotor is conical.

3. The pulp crushing and mixing device according to claim 1, characterized in that, The mandrel is installed at the bottom of the cylinder, passes through the sieve plate, and is located at the center of the sieve plate.

4. The pulp crushing and mixing device according to claim 1, characterized in that, The toothed helical blades arranged on the mandrel are distributed circumferentially around the mandrel and connected to the mandrel, and there are three or more blades.

5. The pulp crushing and mixing device according to claim 1, characterized in that, The chassis, which is mounted on the spindle, is connected to the spindle, and its bottom is located above the sieve plate but is not connected to the sieve plate.

6. The pulp crushing and mixing device according to claim 1, characterized in that, The chassis mounted on the spindle has a diameter larger than that of the toothed helical blades, and is connected to the spindle at its bottom.

7. The pulp crushing and mixing device according to claim 1, characterized in that, The bottom of the cylinder is an inclined surface with a mounting hole. At least one guide plate is arranged circumferentially around the mounting hole at the bottom of the cylinder.

8. The pulp crushing and mixing device according to claim 7, characterized in that, The guide vane is triangular in shape.

9. The pulp crushing and mixing device according to claim 1, characterized in that, The sieve plate has an annular perforated structure.

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