Paper pulp stirrer
By introducing a crushing shaft and a mixing shaft into the pulp mixer, the fibers are shredded and energy is recovered, solving the problems of high fiber viscosity and high energy consumption, and achieving efficient mixing and energy reuse.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-20
AI Technical Summary
Existing pulp mixers cannot effectively break down fibers, resulting in high fiber viscosity and poor flowability, which affects mixing efficiency, and also consumes a lot of energy and cannot recover energy.
A pulp mixer with a crushing shaft and a stirring shaft was designed. The fiber is shredded by a crushing blade and the energy of the stirring process is recovered by a generator, realizing multi-shaft stirring and energy reuse.
It improves the mixing efficiency of pulp, reduces fiber viscosity and fluidity, and reduces the overall energy consumption of the production line.
Smart Images

Figure CN224009679U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixer technology, specifically a pulp mixer. Background Technology
[0002] Pulp mixers are crucial equipment in the papermaking industry, primarily used to thoroughly mix pulp raw materials with water, chemical additives, and other ingredients to create a homogeneous suspension, laying the foundation for subsequent papermaking processes. Through mechanical agitation, they ensure the uniform dispersion of pulp fibers in the liquid, improving the consistency of paper quality.
[0003] Existing technology publication CN213913480U discloses a pulp mixer, including a stirring shaft, a spline transmission mechanism, and a fixed frame. The stirring shaft includes a vertically arranged main shaft, and two layers of spiral stirring blades are arranged along the axis at the lower end of the main shaft. The spiral directions of the two layers of spiral stirring blades are opposite, and the vertical distance between the two layers of spiral stirring blades is greater than one-tenth of the total length of the main shaft. The stirring shaft can reciprocate relative to the fixed frame along the axis. The part of the stirring shaft at the upper end of the fixed frame is connected to an external power source through the spline transmission mechanism. The stirring shaft of this pulp mixer can move along the axis, and the use of double-layer stirring blades with opposite directions of rotation enables the pulp to generate convection, thereby promoting uniform mixing inside the pulp.
[0004] However, existing pulp mixers typically use single-shaft or dual-shaft mixing modes during operation. This mixing method cannot break down the fibers in the pulp, resulting in the presence of some coarse fibers in the pulp. This leads to high viscosity and poor flowability of the pulp fibers, which affects the mixing efficiency. Furthermore, the pulp mixer cannot recover and reuse energy during high-speed mixing, resulting in high overall energy consumption of the pulp mixer production line. To address this issue, we propose a new pulp mixer. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the shortcomings of the prior art, the present invention provides a pulp mixer to solve the problems mentioned in the background art.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a pulp mixer, comprising a mixing chamber, a generator fixedly connected to the bottom of the mixing chamber, a mixing frame fixedly connected to the top of the mixing chamber, a mixing motor fixedly connected to the top of the mixing frame, a crushing shaft fixedly connected to the drive end of the mixing motor, a crushing blade and a drive wheel fixedly connected to the outer side of the crushing shaft, a transmission belt movably connected to the outer side of the drive wheel, a mixing shaft movably connected through the top of the mixing chamber, a mixing rod fixedly connected to the outer side of the mixing shaft, a transmission wheel fixedly connected to the top end of the mixing shaft, and a feeding hopper fixedly connected to one side of the mixing chamber.
[0009] Preferably, a discharge pipe is fixedly connected to the front of the mixing tank, and a solenoid valve is fixedly connected to one end of the discharge pipe.
[0010] Preferably, there are two stirring shafts, both of which extend from top to bottom through the top and bottom of the mixing tank.
[0011] Preferably, support legs are fixedly connected to the four corners of the bottom of the mixing tank, and four support legs are provided, all of which are of the same length.
[0012] Preferably, three generators are provided, two of which are fixedly connected to the stirring shaft, and one of which is fixedly connected to the crushing shaft.
[0013] Preferably, the mixing tank is made of metal material and has a smooth outer surface.
[0014] Preferably, there are multiple stirring shafts, and the multiple stirring shafts are arranged symmetrically in pairs.
[0015] (III) Beneficial Effects
[0016] This utility model provides a pulp mixer, which has the following beneficial effects:
[0017] (1) This type of pulp mixer, through the setting of crushing shaft, crushing blade, stirring shaft and stirring rod, when using the pulp mixer, the operator adds pulp into the mixing tank through the feeding hopper, and then starts the stirring motor. The stirring motor drives the crushing shaft to rotate. At the same time, the crushing shaft drives the drive wheel and crushing blade to rotate. At this time, the crushing blade will cut the fibers in the pulp. The drive wheel drives the transmission wheel to rotate through the transmission belt. At the same time, the transmission wheel drives the stirring shaft to rotate. At this time, the stirring rod will stir the pulp. This allows the pulp mixer to perform multi-shaft stirring and crushing operations at the same time, thereby reducing the viscosity of pulp fibers and enhancing the fluidity of pulp, thus improving the stirring efficiency.
[0018] (2) This type of pulp mixer is equipped with a generator. During the rotation of the crushing shaft and the mixing shaft, since the crushing shaft and the mixing shaft are both connected to the generator, the crushing shaft and the mixing shaft will drive the generator to run. At this time, the generator will generate electrical energy, which can be recovered and used on other equipment on the pulp mixer production line. This enables the pulp mixer to recover and reuse energy, thereby reducing the overall energy consumption of the pulp mixer production line. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a partial structural schematic diagram of the mixing tank of this utility model;
[0021] Figure 3 This is a partial structural schematic diagram of the stirring motor of this utility model;
[0022] Figure 4 This is a cross-sectional view of the mixing tank of this utility model.
[0023] In the diagram: 1. Mixing tank; 2. Support leg; 3. Generator; 4. Discharge pipe; 5. Solenoid valve; 6. Feed hopper; 7. Mixing frame; 8. Mixing motor; 9. Crushing shaft; 901. Crushing blade; 10. Drive wheel; 11. Transmission belt; 12. Mixing shaft; 13. Transmission wheel; 14. Mixing rod. Detailed Implementation
[0024] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-4 This utility model provides a technical solution: a pulp mixer, including a mixing tank 1, a generator 3 fixedly connected to the bottom of the mixing tank 1, a mixing frame 7 fixedly connected to the top of the mixing tank 1, a mixing motor 8 fixedly connected to the top of the mixing frame 7, a crushing shaft 9 fixedly connected to the drive end of the mixing motor 8, a crushing blade 901 and a drive wheel 10 fixedly connected to the outer side of the crushing shaft 9, a transmission belt 11 movably connected to the outer side of the drive wheel 10, a mixing shaft 12 movably connected through the top of the mixing tank 1, a mixing rod 14 fixedly connected to the outer side of the mixing shaft 12, a transmission wheel 13 fixedly connected to the top end of the mixing shaft 12, and a feeding hopper 6 fixedly connected to one side of the mixing tank 1.
[0026] Furthermore, a discharge pipe 4 is fixedly connected to the front of the mixing tank 1, and a solenoid valve 5 is fixedly connected to one end of the discharge pipe 4. After mixing, the operator opens the solenoid valve 5, and the pulp can be discharged through the discharge pipe 4, thus facilitating unloading.
[0027] Furthermore, there are two stirring shafts 12, both of which extend from top to bottom through the top and bottom of the mixing tank 1.
[0028] Furthermore, support legs 2 are fixedly connected to the four corners of the bottom of the mixing tank 1. There are four support legs 2, and the four support legs 2 are of the same length. The support legs 2 make the mixing tank 1 more stable.
[0029] Furthermore, there are three generators 3, two of which are fixedly connected to the stirring shaft 12 and one of which is fixedly connected to the crushing shaft 9, so that the stirring shaft 12 and the crushing shaft 9 can simultaneously drive the three generators 3 to move and generate electricity during rotation.
[0030] Furthermore, the mixing tank 1 is made of metal, and its outer surface is smooth. The mixing tank 1 made of metal is more robust and durable, and is less prone to damage.
[0031] Furthermore, multiple stirring shafts 12 are provided, and the multiple stirring shafts 12 are arranged symmetrically in pairs. The pulp can be stirred by stirring shafts 12, and pulp at different depths can be stirred at the same time.
[0032] Working Principle: After installation, first check the installation, fixation, and safety precautions of this utility model. When using the pulp mixer, the operator adds pulp into the mixing tank 1 through the feeding hopper 6, and then starts the mixing motor 8. The mixing motor 8 drives the crushing shaft 9 to rotate, and at the same time, the crushing shaft 9 drives the drive wheel 10 and the crushing blade 901 to rotate. At this time, the crushing blade 901 will cut the fibers in the pulp. The drive wheel 10 drives the transmission wheel 13 to rotate through the transmission belt 11, and at the same time, the transmission wheel 13 drives the mixing shaft 12 to rotate. At this time, the mixing rod 14... The pulp will be stirred, and during the rotation of the crushing shaft 9 and the stirring shaft 12, since both the crushing shaft 9 and the stirring shaft 12 are connected to the generator 3, the crushing shaft 9 and the stirring shaft 12 will drive the generator 3 to run. At this time, the generator 3 will generate electrical energy, which can be recovered and used on other equipment on the pulp mixer production line. After the stirring is completed, the operator opens the solenoid valve 5, and the pulp can be discharged through the discharge pipe 4. This completes the use of this utility model. This utility model has a simple structure and is safe and convenient to use.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pulp mixer, comprising a mixing tank (1), characterized in that: A generator (3) is fixedly connected to the bottom of the mixing tank (1), a mixing frame (7) is fixedly connected to the top of the mixing tank (1), a mixing motor (8) is fixedly connected to the top of the mixing frame (7), a crushing shaft (9) is fixedly connected to the drive end of the mixing motor (8), a crushing blade (901) and a drive wheel (10) are fixedly connected to the outside of the crushing shaft (9), a transmission belt (11) is movably connected to the outside of the drive wheel (10), a mixing shaft (12) is movably connected through the top of the mixing tank (1), a mixing rod (14) is fixedly connected to the outside of the mixing shaft (12), a transmission wheel (13) is fixedly connected to the top of the mixing shaft (12), and a feeding hopper (6) is fixedly connected to one side of the mixing tank (1).
2. The pulp mixer according to claim 1, characterized in that: A discharge pipe (4) is fixedly connected to the front of the mixing tank (1), and a solenoid valve (5) is fixedly connected to one end of the discharge pipe (4).
3. A pulp mixer according to claim 1, characterized in that: There are two stirring shafts (12), and both stirring shafts (12) extend from top to bottom through the top and bottom of the mixing tank (1).
4. A pulp mixer according to claim 1, characterized in that: The mixing tank (1) is fixedly connected to four corners at the bottom of the tank. There are four support legs (2), and the four support legs (2) are of the same length.
5. A pulp mixer according to claim 1, characterized in that: There are three generators (3), two of which are fixedly connected to the stirring shaft (12), and one of which is fixedly connected to the crushing shaft (9).
6. A pulp mixer according to claim 1, characterized in that: The mixing tank (1) is made of metal material and has a smooth outer surface.
7. A pulp mixer according to claim 1, characterized in that: Multiple stirring shafts (12) are provided, and the multiple stirring shafts (12) are arranged symmetrically in pairs.
Citation Information
Patent Citations
Paper pulp stirrer
CN213913480U