Vertical hydrapulper
By using an inverted funnel-shaped slurry ring and suspended airbag structure in the vertical hydraulic slurry, the position of the slurry ring is dynamically adjusted and the airbag buoyancy is used to prevent slurry splashing, the problem of slurry splashing in existing equipment is solved, and the equipment efficiency and environmental cleanliness are improved.
Patent Information
- Application Number
- CN202421926755.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-09
AI Technical Summary
During the working process of existing vertical hydraulic pulpers, the slurry is prone to splash due to the centrifugal force and shear force generated by the rotor at high speed, resulting in reduced equipment efficiency and environmental pollution.
A vertical hydraulic pulping machine is designed, using an inverted funnel-shaped slurry ring and suspended airbag structure. The slurry ring can dynamically adjust its position as the liquid level changes. The suspended airbag floats on the slurry surface through the internally charged gas to jointly prevent slurry from splashing.
Effectively prevent slurry from splashing during rotation, improve the operating efficiency of the equipment and the cleanliness of the environment, and reduce maintenance costs.
Smart Images
Figure CN222923522U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic pulpers, in particular to a vertical hydraulic pulper. Background Technique
[0002] The vertical hydraulic pulper is a key papermaking equipment, which is widely used in paper mills and the waste paper recycling industry. Its main function is to mix waste paper, water and other additives, and generate strong water flow and shear force through the high-speed rotating blades to separate and break the waste paper fibers into uniform pulp-like substances. During operation, the waste paper is quickly dissociated under the action of centrifugal force and shear force in water, turning into fine fibers suspended in water to form uniform pulp. This equipment has many advantages. First of all, the vertical design makes it occupy a small area and is suitable for factories of various scales; secondly, it has a strong processing capacity and can quickly and efficiently complete the processing tasks of a large amount of waste paper; in addition, it is easy to operate and maintain, which can greatly reduce the labor intensity and maintenance cost. Modern vertical hydraulic pulpers are also equipped with an automated control system, which can monitor and adjust the operating state of the equipment in real time to ensure the stability and efficiency of the production process. In terms of environmental protection, the vertical hydraulic pulper helps the recycling of waste paper, reduces the environmental pollution caused by waste paper, and conforms to the concept of green production. Therefore, it occupies an indispensable important position in the modern papermaking industry and provides strong support for improving pulp quality and production efficiency.
[0003] However, during the operation of the existing vertical hydraulic pulper, when the pulp in the tank reaches a certain amount, the high-speed rotating rotor located at the center of the tank will generate strong centrifugal force and shear force. These forces cause the pulp to be thrown towards the inner wall of the tank and form turbulence and eddies on its surface. Due to the high-speed rotation of the rotor, the pulp is quickly dispersed and broken in the tank, forming smaller fiber bundles and particles. During this process, the kinetic energy of the pulp increases, resulting in some of the pulp splashing to the upper part of the tank. Summary of the Invention
[0004] (1) Technical problems to be solved: Aiming at the deficiencies of the existing technology, the utility model provides a vertical hydraulic pulper, which has the advantages of avoiding pulp splashing during the operation of the equipment and being able to dynamically adjust according to the pulp height, and solves the problem that the pulp is prone to splashing during the rotation process of the existing vertical hydraulic pulper.
[0005] (2) Technical solution: To achieve the purpose of avoiding slurry splashing during the operation of the equipment and being able to dynamically adjust according to the height of the slurry, the present utility model provides the following technical solution: A vertical hydraulic pulper, comprising a tank body, a pulping rotor, and a pulp outlet. The tank body is filled with slurry. The pulping rotor is coaxially rotatably arranged in the tank body. An outlet communicating with the inside of the tank body is opened at the bottom inside the tank body. A slurry blocking ring in the shape of an inverted funnel is slidably arranged in the tank body. An inlet is coaxially opened at the center of the slurry blocking ring. A floating airbag is coaxially fixedly arranged at the bottom of the inlet. The floating airbag is filled with gas and is in contact with the slurry in the tank body and floats on the surface of the slurry.
[0006] Preferably, an annular sliding groove is coaxially opened in the tank body. A plurality of sliding rods are arranged in the sliding groove. A plurality of sliding blocks corresponding to the sliding rods are arranged in an array in the circumferential direction of the slurry blocking ring. The sliding blocks are slidably arranged on the sliding rods.
[0007] Preferably, the diameter of the inlet is larger than the minimum diameter of the pulping rotor. The lowest point of the sliding range of the slurry blocking ring is higher than the highest point of the pulping rotor.
[0008] Preferably, the gas filled in the floating airbag is nitrogen or helium.
[0009] Preferably, the floating airbag is made of polyurethane or silica gel.
[0010] Preferably, a driving motor for driving its rotation is arranged at the bottom of the pulping rotor.
[0011] (3) Beneficial effects: Compared with the prior art, the present utility model provides a vertical hydraulic pulper, having the following beneficial effects:
[0012] 1. For this vertical hydraulic pulper, through the combined use of the sliding groove structure, the slurry blocking ring structure, the floating airbag structure, and the sliding block structure, compared with the traditional technical structure where the slurry is prone to splash during rotation, the slurry blocking ring in this vertical hydraulic pulper can move up and down with the change of the liquid level height. This structure enables the floating airbag to immediately respond to the liquid level change, float or sink accordingly, and directly drive the slurry blocking ring to move up and down together, so that the slurry blocking ring can always maintain an appropriate distance from the slurry liquid level, effectively blocking the slurry from splashing. Moreover, the slurry blocking ring is designed in the shape of an inverted funnel, and its structure with a wider top and narrower bottom can effectively guide the splashed slurry to flow back. Due to the action of gravity, any slurry splashed onto the surface of the slurry blocking ring will flow back into the tank body along the inclined surface and will not splash outside the tank body. The design of this shape can also increase the coverage area of the slurry blocking ring, thus preventing the slurry from splashing out of the tank body to a greater extent.
[0013] 2. This vertical hydraulic pulper, through the combined use of the tank structure, the pulp inlet structure, the slurry retaining ring structure, and the floating airbag structure, is less prone to splashing when injecting pulp into the tank compared to traditional technical structures. Since the slurry retaining ring structure of this vertical hydraulic pulper is designed in an inverted funnel shape and has the characteristic of being able to change its own height following the change in the height of the pulp liquid level, this characteristic of adjusting the position with the change in the liquid level height enables the pulp inlet to always maintain a fixed height with the pulp liquid level, thereby effectively reducing pulp splashing during feeding. Due to the inverted funnel shape of the slurry retaining ring and its self - adaptive height adjustment characteristic, even when the pulping rotor is running at high speed and during the pulp feeding process, if the pulp liquid level fluctuates, the slurry retaining ring can effectively prevent the pulp from splashing out of the tank. At the same time, any pulp splashing caused by agitation or pulp feeding will be guided by the slurry retaining ring to flow back into the tank and will not spill outside the tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 FIG. 6 is a three - dimensional structure schematic diagram of a vertical hydraulic pulper in the present utility model;
[0015] Figure 2 FIG. 10 is a top view of the structure of a vertical hydraulic pulper in the present utility model;
[0016] Figure 3 FIG. 14 is a cross - sectional view of the slurry retaining ring structure of a vertical hydraulic pulper in the present utility model at the lowest point;
[0017] Figure 4 FIG. 18 is a cross - sectional view of the slurry retaining ring structure of a vertical hydraulic pulper in the present utility model at the highest point;
[0018] Figure 5 FIG. 22 is a three - dimensional cross - sectional view of a vertical hydraulic pulper in the present utility model;
[0019] Figure 6 FIG. 26 is a three - dimensional structure schematic diagram of the slurry retaining ring of a vertical hydraulic pulper in the present utility model.
[0020] In the figures: 1 - pulping rotor, 20 - tank, 21 - pulp outlet, 22 - sliding groove, 23 - sliding rod, 30 - slurry retaining ring, 31 - pulp inlet, 32 - floating airbag, 33 - sliding block, 4 - drive motor. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 A vertical hydraulic pulper, comprising a tank body 20, a pulping rotor 1, and a pulp outlet 21. The tank body 20 is filled with pulp. The pulping rotor 1 is coaxially rotatably arranged in the tank body 20. An outlet 21 communicating with the inside of the tank body 20 is provided at the bottom inside the tank body 20. A slurry retaining ring 30 having an inverted funnel shape is slidably arranged in the tank body 20. The slurry retaining ring 30 has an inverted funnel shape. Such a structure can effectively prevent the pulp from splashing out of the tank body 20 during the pulping process due to high-speed rotation. The design of the inverted funnel shape can guide the splashed pulp back into the inside of the tank body 20, thereby keeping the environment clean and reducing waste. A pulp inlet 31 is coaxially provided at the center of the slurry retaining ring 30. The design of coaxially providing the pulp inlet 31 at the center ensures the stability and uniformity of the pulp inlet process. The pulp inlet 31 is located at the center of the slurry retaining ring 30. The coaxial arrangement means that the pulp can enter from the center and be evenly distributed, which helps the efficient progress of the pulping process. In addition, this also enables the pulp inlet 31 to maintain a fixed height with the pulp liquid level, reducing the risk of pulp splashing. A floating airbag 32 is coaxially fixedly arranged at the bottom of the pulp inlet 31. The floating airbag 32 is filled with gas. After the floating airbag 32 is filled with gas, it has sufficient buoyancy to float up and down with the change of the liquid level height. In this way, the floating airbag 32 and the slurry retaining ring 30 can move synchronously, always keeping the slurry retaining ring 30 covering above the pulp liquid level, effectively preventing the pulp from splashing. At the same time, the buoyancy of the airbag enables the slurry retaining ring 30 to adapt to the change of the liquid level height and maintain an appropriate distance between the pulp inlet 31 and the pulp liquid level, further reducing splashing. A driving motor 4 for driving the rotation of the pulping rotor 1 is provided at the bottom of the pulping rotor 1.
[0023] Please refer to Figure 1 、 Figure 3 、 Figure 5 and Figure 6, a ring-shaped sliding groove 22 is coaxially provided in the tank body 20. A number of sliding rods 23 are arranged in the sliding groove 22. The design of the ring-shaped sliding groove 22 and the sliding rods 23 provides a stable sliding path for the slurry retaining ring 30. The sliding grooves 22 are coaxially arranged to ensure that the slurry retaining ring 30 can move up and down smoothly when the liquid level changes, without tilting or shifting. The sliding rods 23 provide support and guidance for the vertical movement of the slurry retaining ring 30, ensuring its stability and accuracy. A number of sliding blocks 33 corresponding to the sliding rods 23 are arranged in an array in the circumferential direction of the slurry retaining ring 30. The sliding blocks 33 are slidably arranged on the sliding rods 23. The arrangement of the sliding blocks 33 in the circumferential direction of the slurry retaining ring 30 and their cooperation with the sliding rods 23 ensure that the slurry retaining ring 30 can move up and down freely and smoothly when the liquid level changes. The sliding mechanism of the sliding blocks 33 on the sliding rods 23 makes the movement of the slurry retaining ring 30 smoother, while maintaining its horizontal state and avoiding tilting. This design ensures that the slurry retaining ring 30 can always maintain an appropriate distance from the liquid surface, effectively preventing the slurry from splashing.
[0024] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the diameter of the slurry inlet 31 is larger than the minimum diameter of the pulping rotor 1, ensuring that the opening of the slurry inlet 31 is large enough to allow a large amount of slurry to pass through smoothly, while avoiding blockage or flow restriction during the slurry inlet process. This helps to improve the pulping efficiency and ensure that the slurry can enter the inside of the tank body 20 evenly. The lowest point of the sliding range of the slurry retaining ring 30 is higher than the highest point of the pulping rotor 1. This design ensures that the slurry retaining ring 30 will not come into contact with the high-speed rotating pulping rotor 1 under any circumstances, avoiding possible mechanical failures and damages. That is to say, even when the liquid level drops to the lowest point, the slurry retaining ring 30 still remains above the rotor, thus protecting the slurry retaining ring 30 and the rotor and extending the service life of the equipment. The gas filled in the floating airbag 32 is nitrogen or helium. Nitrogen and helium are both inert gases with low densities, which can provide sufficient buoyancy to make the floating airbag 32 float stably on the surface of the slurry. These gases also have the characteristics of high safety and stable chemical properties and will not react with the slurry, ensuring the safety of the production process. The floating airbag 32 is made of polyurethane or silica gel. Polyurethane and silica gel are materials that are corrosion-resistant, wear-resistant, and high-temperature-resistant, and can be used in the slurry environment for a long time without being easily damaged. These materials also have good elasticity and flexibility, can adapt to the up and down fluctuations of the liquid level, and ensure the normal function of the floating airbag 32. In addition, the physical properties of these materials enable the airbag to withstand a certain amount of pressure and stress, and are not easily broken or deformed, thus providing more reliable buoyancy support.
[0025] Working principle: When the vertical hydraulic pulper is working, pulp is continuously fed into the tank body 20, and the pulping rotor 1 is driven by the driving motor 4 to rotate for pulping and separation. The shape of the slurry retaining ring 30 is an inverted funnel shape and is located inside the tank body 20. Such a structure enables the slurry retaining ring 30 to cover above the pulp, forming a protective cover to prevent the pulp from splashing outside the tank body 20 due to the high-speed rotation of the pulping rotor 1; when the pulp in the tank body 20 comes into contact with the floating airbag 32, the floating airbag 32 is filled with gases with a relatively low density such as nitrogen or helium, and these gases enable the floating airbag 32 to have sufficient buoyancy to float on the surface of the pulp. Due to the buoyancy of the floating airbag 32, the floating airbag 32 will always float up and down with the change in the height of the pulp liquid level, and one side of the slurry retaining ring 30 is fixedly connected to the floating airbag 32, while the other side is slidably installed in the sliding groove 22 through the sliding block 33. This means that when the floating airbag 32 floats up and down with the liquid level, the slurry retaining ring 30 will also move accordingly. Through this fixed connection, the slurry retaining ring 30 can always remain above the pulp liquid level, forming a protective cover to prevent the pulp from splashing. And the other side of the slurry retaining ring 30 is slidably installed on the sliding groove 22 inside the tank body 20 through the sliding block 33. The sliding groove 22 is annular and coaxially arranged, and the sliding block 33 can freely move up and down in the sliding groove 22. This design ensures that the slurry retaining ring 30 can move up and down smoothly with the change in the liquid level height without tilting or shifting. This structure enables the floating airbag 32 to immediately respond to the change in the liquid level and float up or sink when the height of the pulp liquid level in the tank body 20 changes, whether it rises or falls. Since one side of the floating airbag 32 is fixedly connected to the slurry retaining ring 30, this floating will directly drive the slurry retaining ring 30 to move up and down together. The sliding mechanism of the sliding block 33 in the sliding groove 22 ensures that the movement of the slurry retaining ring 30 is vertical and can freely adjust the height to adapt to the liquid level change. This design enables the slurry retaining ring 30 to always maintain an appropriate distance from the pulp liquid level, thus effectively blocking the pulp from splashing. And the slurry retaining ring 30 is designed in an inverted funnel shape, and its structure with a wider upper part and a narrower lower part can effectively guide the splashed pulp to flow back. Due to the action of gravity, any pulp splashed onto the surface of the slurry retaining ring 30 will flow back into the tank body 20 along the inclined surface and will not splash outside the tank body 20. The design of this shape can also increase the coverage area of the slurry retaining ring 30, thereby preventing the pulp from splashing out of the tank body 20 to a greater extent.
[0026] And since the slurry retaining ring 30 is designed in an inverted funnel shape and has the characteristic of being able to change its own height following the change in the height of the slurry liquid level, this characteristic of adjusting the position according to the liquid level height enables the slurry inlet 31 to always maintain a fixed height with respect to the slurry liquid level, thereby effectively reducing slurry splashing during feeding. Due to the inverted funnel shape of the slurry retaining ring 30 and its self-adaptive height adjustment characteristic, even when the slurry liquid level fluctuates during the high-speed rotation of the pulping rotor 1 and the slurry feeding process, the slurry retaining ring 30 can effectively prevent the slurry from splashing out of the tank body 20. At the same time, any slurry splashing caused by agitation or feeding will be guided by the slurry retaining ring 30 to flow back into the tank body 20 and will not spill outside the tank body 20.
[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.
[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A vertical hydraulic pulper, comprising a tank body (20), a pulping rotor (1), and a pulp outlet (21), wherein the tank body (20) is filled with pulp, the pulping rotor (1) is coaxially rotatably arranged in the tank body (20), and the tank body (20) is provided with a pulp outlet (21) at the bottom thereof and communicated with the interior of the tank body (20), characterized in that: A slurry retaining ring (30) in the shape of an inverted funnel is slidably arranged in the tank body (20), a slurry inlet (31) is coaxially opened at the center of the slurry retaining ring (30), a floating air bag (32) is coaxially fixedly arranged at the bottom of the slurry inlet (31), the floating air bag (32) is filled with gas, and the floating air bag (32) contacts the slurry in the tank body (20) and floats on the slurry surface.
2. A vertical hydraulic pulper according to claim 1, characterized in that: An annular sliding groove (22) is coaxially provided in the groove body (20), a plurality of sliding rods (23) are arranged in the sliding groove (22), a plurality of sliding blocks (33) corresponding to the sliding rods (23) are arranged in an array in the circumferential direction of the slurry retaining ring (30), and the sliding blocks (33) are slidably arranged on the sliding rods (23).
3. A vertical hydraulic pulper according to claim 1, characterized in that: The diameter of the pulp inlet (31) is greater than the minimum diameter of the pulping rotor (1), and the lowest point of the sliding range of the pulp retaining ring (30) is higher than the highest point of the pulping rotor (1).
4. A vertical hydraulic pulper according to claim 1, characterized in that: The gas filled into the floating airbag (32) is nitrogen or helium.
5. A vertical hydraulic pulper according to claim 1, characterized in that: The floating airbag (32) is made of polyurethane or silica gel.
6. A vertical hydraulic pulper according to claim 1, characterized in that: A driving motor (4) for driving the pulping rotor (1) to rotate is arranged at the bottom thereof.