Paper pulp stirrer
The multi-layered stirring blades and spoiler structure enhance the pulp stirring intensity, solving the problem of poor stirring effect of traditional stirring equipment, achieving efficient mixing of pulp and fiber refinement, and improving paper quality and production efficiency.
Patent Information
- Application Number
- CN202422575144.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-24
AI Technical Summary
Traditional mixing equipment has low stirring intensity, resulting in poor pulp stirring effect, affecting the uniformity and fiber refinement of the pulp, and thus affecting the forming quality and strength of the paper.
A multi-level stirring blade structure is adopted, including the first stirring blade on the shaft, the second stirring blade on the inner wall of the mixing tank and the third stirring blade at the bottom. Combined with the spoiler and overflow hole, a complex shear and friction force field is formed to enhance the stirring effect and avoid blockage through the discharge mechanism.
It significantly improves the stirring and mixing effect of the pulp, enhances the swelling and refinement of the fibers, improves the forming quality, strength and uniformity of the paper, avoids pulp agglomeration, and improves the mixing efficiency and the smoothness of the discharge.
Smart Images
Figure CN223366702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stirring equipment, in particular to a pulp mixer. Background Art
[0002] Pulp is a fibrous substance made from plant fibers through different processing methods. It is the main raw material for the papermaking industry and is widely used in the manufacture of paper, cardboard and specialty paper. It is also used in the manufacture of cellulose derivatives, artificial fibers, plastics, coatings, films, gunpowder and other industries.
[0003] In the pulping and papermaking process, in order to enable the fibers, fillers and other additives in the pulp to be evenly dispersed in the slurry, avoid the formation of fiber bundles, improve the uniformity of the pulp, and at the same time utilize the shear force and friction in the stirring process to fine fiberize, promote the bonding between fibers, improve the strength and tightness of the paper and many other factors, the paper needs to be stirred and mixed. However, the traditional stirring structure is only equipped with a single stirring paddle as a stirring structure, and the stirring intensity is low. For the production of pulp, it is difficult to ensure the fiber refinement effect during the pulp stirring process, which affects the subsequent papermaking performance of the pulp. Therefore, the present application provides a pulp mixer to meet the needs. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a paper pulp mixer to solve the problem that the existing stirring equipment has low stirring intensity and poor stirring effect on the paper pulp.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:
[0006] A pulp mixer comprises a mixing cylinder, a discharging mechanism is provided at the bottom of the mixing cylinder, a frame is fixed horizontally to the top of the mixing cylinder, a shaft is vertically rotatably mounted on the frame and extends into the mixing cylinder, a first stirring blade is radially provided on the shaft, a second stirring blade is horizontally provided on the inner wall of the mixing cylinder, and the second stirring blade and the first stirring blade are staggered.
[0007] Optionally, a third stirring blade is radially arranged at the bottom end of the shaft, and a first motor for driving the shaft to rotate is installed on the top of the frame.
[0008] Optionally, a plurality of pairs of the first stirring blades are provided, and each pair of the first stirring blades is arranged tilted toward the rotation direction of the shaft.
[0009] Optionally, a plurality of the second stirring blades are evenly arranged, each of the second stirring blades is provided with an overflow hole, and a plurality of the overflow holes are provided side by side.
[0010] Optionally, a first spoiler is provided at the bottom of the second stirring blade, and the first spoiler is curved in an arc shape in a direction opposite to the rotation direction of the first stirring blade.
[0011] Optionally, at least a pair of the third stirring blades are symmetrically arranged, and a second spoiler is provided at the bottom of the third stirring blade, and the second spoiler is curved in an arc shape toward the direction of rotation of the shaft.
[0012] Optionally, a detachable assembly block is provided on the shaft, and the first stirring blade is assembled on the ring plate.
[0013] Optionally, the assembly block includes a pair of buckle blocks that are buckled and sleeved on the shaft, the pair of buckle blocks are bolted together, and the first stirring blade is fixed on the buckle blocks.
[0014] Optionally, a ring plate is fixedly provided at the bottom end of the mixing tank, and a plurality of support columns are evenly arranged at the bottom of the ring plate.
[0015] Optionally, the discharge mechanism includes a discharge hopper fixed on the bottom end surface of the mixing tank, the discharge hopper is connected to the interior of the mixing tank, the bottom end of the discharge hopper is connected to a discharge pipe, a propeller blade is installed at one end of the discharge pipe facing the discharge hopper, a second motor for driving the propeller blade to rotate is installed on the end surface of the discharge pipe facing the discharge hopper, and the discharge pipe extends to the outside of the mixing tank away from the end of the discharge hopper.
[0016] Compared with the prior art, the present invention has at least the following beneficial effects:
[0017] In the above scheme, by setting the first stirring blade and the third stirring blade, the pulp is put into the stirring tank, the first motor is started to drive the shaft to rotate, and the shaft drives the first stirring blade and the third stirring blade to rotate. During the rotation of the third stirring blade, the second spoiler at the bottom of the third stirring blade is used to stir and push the pulp at the bottom of the stirring tank upward, and multiple pairs of first stirring blades efficiently stir and mix the pulp.
[0018] Through the arrangement of the first stirring blade and the second stirring blade, when the first stirring blade rotates past the second stirring blade, the second stirring blade can intercept the pulp, and the overflow hole opened on the second stirring blade allows part of the pulp to overflow through, and the generated shear force and friction force are beneficial to the pulp fiber refinement. In addition, the first stirring blade arranged obliquely toward the rotation direction of the shaft can push the pulp toward the second stirring blade, and the first spoiler at the bottom of the second stirring blade is bent toward the direction opposite to the rotation direction of the first stirring blade, which can intercept the pulp while guiding it upward, and part of the pulp overflows through the overflow hole, and the remaining pulp can be mixed with the pulp pushed subsequently through the first stirring blade, thereby increasing the stirring intensity of the pulp, being more conducive to the swelling of the fibers, adjusting the water filterability of the pulp, and significantly improving the forming quality, strength, tightness and uniformity of the paper, thereby improving the overall stirring and mixing effect and mixing efficiency of the pulp, and being more suitable for the stirring and mixing processing of the pulp.
[0019] By setting up the discharge mechanism, the valve between the discharge hopper and the discharge pipe is opened, and the pulp mixed in the mixing tank is discharged through the discharge hopper and the discharge pipe. The second motor is started to drive the propeller blades to rotate, which can forcefully guide the pulp discharged from the discharge hopper through the discharge pipe, avoiding the phenomenon of pulp being blocked at the connection between the discharge hopper and the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and enable those skilled in the relevant art to make and use the invention.
[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a pulp mixer;
[0022] Figure 2 Schematic diagram of the structure of the shaft, the first stirring blade and the second stirring blade;
[0023] Figure 3 Schematic diagram of the structure of the first stirring blade and the second stirring blade;
[0024] Figure 4 Schematic diagram of the structure of the third stirring blade;
[0025] Figure 5 for Figure 2 A magnified view of point A in the figure;
[0026] Figure 6 It is a structural diagram of the discharge mechanism.
[0027] [reference numerals]
[0028] 1. Mixing tank; 2. Frame; 3. Shaft; 4. First stirring blade; 5. Second stirring blade; 6. Ring plate; 7. Support column; 8. Discharge mechanism; 9. First motor; 10. Third stirring blade; 11. Overflow hole; 12. First spoiler; 13. Second spoiler; 14. Buckle block; 15. Discharge hopper; 16. Discharge pipe; 17. Propeller blade; 18. Second motor; 19. Assembly block.
[0029] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, devices and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION
[0030] The following describes a pulp mixer provided by the present invention in detail with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement the invention with respect to known technologies. Furthermore, the accompanying drawings are only for the purpose of describing the embodiments in more detail and are not intended to limit the present invention to any specific extent.
[0031] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).
[0032] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.
[0033] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.
[0034] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.
[0035] like Figure 1 、 Figure 2 and Figure 4 As shown, an embodiment of the present invention provides a pulp mixer, comprising a mixing cylinder 1, a frame 2 being horizontally fixed to the top of the mixing cylinder 1, a shaft 3 being vertically rotatably mounted on the frame 2 and extending into the mixing cylinder 1, a first stirring blade 4 being radially arranged on the shaft 3, a third stirring blade 10 being radially arranged at the bottom end of the shaft 3, a first motor 9 being mounted on the top of the frame 2 for driving the shaft 3 to rotate, at least a pair of third stirring blades 10 being symmetrically arranged, a second spoiler 13 being disposed at the bottom of the third stirring blade 10, the second spoiler 13 being curved in an arc shape toward the direction of rotation of the shaft 3. When pulp is put into the mixing cylinder 1, the first motor 9 is started to drive the shaft 3 to rotate, and the shaft 3 drives the first stirring blade 4 and the third stirring blade 10 to rotate. During the rotation of the third stirring blade 10, the second spoiler 13 at the bottom of the third stirring blade 10 is used to stir and push the pulp at the bottom of the mixing cylinder 1 upward, and the first stirring blade 4 stirs and mixes the pulp, thereby achieving efficient stirring and mixing of the pulp.
[0036] like Figure 2 and Figure 5 As shown, the first stirring blade 4 is provided with multiple pairs, and a detachable assembly block 19 is provided on the shaft 3. The first stirring blade 4 is assembled on the ring plate 6. The assembly block 19 includes a pair of buckle blocks 14 that are snap-fitted and sleeved on the shaft 3. The pair of buckle blocks 14 are bolted together, and the first stirring blade 4 is fixed on the buckle blocks 14. Through this structural method, the assembly of the first stirring blade 4 can be facilitated.
[0037] like Figures 1 to 3As shown, a second stirring blade 5 is horizontally arranged on the inner wall of the mixing cylinder 1, and the second stirring blade 5 and the first stirring blade 4 are staggered. Each first stirring blade 4 is arranged tilted toward the rotation direction of the shaft 3, and multiple second stirring blades 5 are evenly arranged. An overflow hole 11 is provided on each second stirring blade 5, and multiple overflow holes 11 are provided side by side. A first spoiler 12 is provided at the bottom of the second stirring blade 5, and the first spoiler 12 is curved in an arc shape toward the direction of rotation away from the first stirring blade 4. During the process of stirring and mixing the pulp, the first stirring blade 4 rotates past the second stirring blade 5, and the second stirring blade 5 can intercept the pulp. The overflow hole 11 opened on the second stirring blade 5 allows part of the pulp to overflow through. The generated shear force and friction force are beneficial to the refinement of the pulp fibers. In addition, the first stirring blade 4 arranged obliquely toward the rotation direction of the shaft 3 can push the pulp toward the second stirring blade 5. The first spoiler 12 bent at the bottom of the second stirring blade 5 facing away from the rotation direction of the first stirring blade 4 can intercept the pulp while guiding it upward. Part of the pulp overflows through the overflow hole 11, and the remaining pulp can be mixed with the pulp pushed subsequently through the first stirring blade 4. As a result, the stirring intensity of the pulp is increased, which is more conducive to the swelling of the fibers and the adjustment of the water filterability of the pulp. It can significantly improve the forming quality, strength, tightness and uniformity of the paper, and improve the stirring and mixing effect and mixing efficiency of the pulp as a whole, and can effectively avoid the problem of pulp agglomeration affecting subsequent paper processing.
[0038] like Figure 1 and Figure 6 As shown, a ring plate 6 is fixedly provided at the bottom end of the mixing tank 1, and a plurality of support columns 7 are evenly arranged at the bottom of the ring plate 6. A discharge mechanism 8 is provided at the bottom of the mixing tank 1, and the discharge mechanism 8 includes a discharge hopper 15 fixed on the bottom end surface of the mixing tank 1, the discharge hopper 15 is conductively connected to the interior of the mixing tank 1, and the bottom end of the discharge hopper 15 is conductively connected to a discharge pipe 16, and a propeller blade 17 is installed at the end of the discharge pipe 16 facing the discharge hopper 15, and a second motor 18 for driving the propeller blade 17 to rotate is installed on the end surface of the discharge pipe 16 facing the discharge hopper 15, and the discharge pipe 16 extends to the outside of the mixing tank 1 at one end away from the discharge hopper 15. A valve is provided at the bottom end of the discharge hopper 15. During the process of stirring and mixing the pulp, the valve is in a closed state. After the stirring is completed, the valve is opened, and the pulp in the mixing tank 1 is discharged through the discharge hopper 15 and the discharge pipe 16. At the same time, the second motor 18 is started to drive the propeller blade 17 to rotate, so that the pulp discharged from the discharge hopper 15 can be forcefully discharged from the discharge pipe 16, thereby avoiding the phenomenon of pulp being blocked at the connection between the discharge hopper 15 and the discharge pipe 16.
[0039] The working principle of the technical solution provided by the utility model is as follows:
[0040] When in use, put the pulp into the mixing tank 1, start the first motor 9 to drive the shaft 3 to rotate, and the shaft 3 drives the first stirring blade 4 and the third stirring blade 10 to rotate. During the rotation of the third stirring blade 10, the second spoiler 13 at the bottom of the third stirring blade 10 is used to stir and push the pulp at the bottom of the mixing tank 1 upward, and multiple pairs of first stirring blades 4 stir and mix the pulp. During this process, when the first stirring blade 4 rotates past the second stirring blade 5, the second stirring blade 5 can intercept the pulp, and the overflow hole 11 opened on the second stirring blade 5 allows part of the pulp to overflow. The shear force and friction force generated are beneficial to the refinement of the pulp fibers. In addition, the first stirring blade 4, which is arranged obliquely in the direction of rotation of the shaft 3, can push the pulp toward the second stirring blade 5. The bottom of the second stirring blade 5 faces the first spoiler 12 which is curved and faces the direction opposite to the rotation direction of the first stirring blade 4. It can intercept the pulp and guide it upward at the same time. Part of the pulp overflows through the overflow hole 11, and the rest of the pulp can be mixed with the pulp pushed subsequently through the first stirring blade 4. As a result, the stirring intensity of the pulp is increased, which is more conducive to the swelling of the fiber, adjusts the water filterability of the pulp, and can significantly improve the forming quality, strength, tightness and uniformity of the paper. The overall stirring and mixing effect and mixing efficiency of the pulp are improved, and the problem of pulp agglomeration affecting subsequent paper processing is avoided. Furthermore, after the stirring and mixing is completed, the valve between the discharge hopper 15 and the discharge pipe 16 is opened, and the pulp in the mixing tank 1 is discharged through the discharge hopper 15 and the discharge pipe 16. The second motor 18 is started to drive the propeller blade 17 to rotate, which can forcefully guide the pulp discharged from the discharge hopper 15 from the discharge pipe 16, avoiding the phenomenon of pulp being blocked at the connection between the discharge hopper 15 and the discharge pipe 16.
[0041] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. To provide a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention, but those skilled in the art will be able to fully understand this invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A pulp mixer, comprising a mixing tank, wherein a discharge mechanism is provided at the bottom of the mixing tank, characterized in that: A frame is horizontally fixed on the top of the mixing tank, and a shaft extending into the mixing tank is vertically rotatably installed on the frame. A first stirring blade is radially arranged on the shaft, and a second stirring blade is horizontally arranged on the inner wall of the mixing tank. The second stirring blade and the first stirring blade are staggered.
2. The pulp mixer according to claim 1, characterized in that: A third stirring blade is radially arranged at the bottom end of the shaft, and a first motor for driving the shaft to rotate is installed on the top of the frame.
3. The pulp mixer according to claim 1, characterized in that: The first stirring blades are provided in a plurality of pairs, and each of the first stirring blades is arranged tilted toward the rotation direction of the shaft.
4. The pulp mixer according to claim 1, characterized in that: A plurality of the second stirring blades are evenly arranged, each of the second stirring blades is provided with an overflow hole, and a plurality of the overflow holes are provided side by side.
5. The pulp mixer according to claim 1, characterized in that: A first spoiler is provided at the bottom of the second stirring blade, and the first spoiler is curved in an arc shape in a direction opposite to the rotation direction of the first stirring blade.
6. The pulp mixer according to claim 2, characterized in that: At least one pair of the third stirring blades are symmetrically arranged. A second spoiler is arranged at the bottom of the third stirring blade, and the second spoiler is curved in an arc shape toward the direction of rotation of the shaft.
7. The pulp mixer according to claim 1, characterized in that: The shaft is provided with a detachable assembly block, and the first stirring blade is assembled on the ring plate.
8. The pulp mixer according to claim 7, characterized in that: The assembly block includes a pair of buckle blocks that are buckled and sleeved on the shaft, the pair of buckle blocks are bolted together, and the first stirring blade is fixed on the buckle blocks.
9. The pulp mixer according to claim 1, characterized in that: A ring plate is fixedly provided at the bottom end of the mixing tank, and a plurality of support columns are evenly arranged at the bottom of the ring plate.
10. The pulp mixer according to claim 1, characterized in that The discharge mechanism includes a discharge hopper fixed on the bottom end surface of the mixing tank, the discharge hopper is connected to the interior of the mixing tank, the bottom end of the discharge hopper is connected to a discharge pipe, a propeller blade is installed in the discharge pipe at one end facing the discharge hopper, and a second motor for driving the propeller blade to rotate is installed on the end surface of the discharge pipe facing the discharge hopper, and the discharge pipe extends to the outside of the mixing tank at one end away from the discharge hopper.