A solid-liquid mixing preprocessor

Abstract

This utility model discloses a solid-liquid mixing pre-processor, including a mixing tank, a tank cover installed on top of the mixing tank, a drive motor fixed on the tank cover, a solid feed inlet and a liquid feed inlet, a rotating shaft rotatably connected inside the mixing tank and driven by the drive motor, a mixing arm fixedly installed on the rotating shaft, and a discharge port fixedly connected to the bottom of the mixing tank. A feeding disc located above the mixing arm and a turntable located below the mixing arm are fixed to the surface of the rotating shaft. The feeding disc has evenly distributed perforations, and rotatable beads are installed within the perforations. By setting a feeding disc above the mixing arm, solid and liquid materials are preferentially caught by the high-speed rotating feeding disc driven by the rotating shaft when added. The design of the feeding disc, the beads, and the perforations disperses the solid materials downwards, preventing the accumulation of solid materials and improving the initial dispersion effect, thereby increasing mixing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mixing tank technology, specifically a solid-liquid mixing preprocessor. Background Technology

[0002] In the papermaking process, selecting the right mixing equipment is crucial to ensuring paper quality and production efficiency, and a solid-liquid mixing preprocessor is a good choice. A solid-liquid mixing preprocessor is a device used to uniformly mix solid and liquid materials; it can be used to mix pulp fibers with water and solvents and is very common in the papermaking industry.

[0003] The mixing process in solid-liquid mixing pre-processors primarily relies on stirring blades. While the shapes of stirring blades in commercially available solid-liquid mixing pre-processors vary, the mixing process is consistently achieved by changing the rotational speed and direction of the stirring blades. When solid materials are added to the mixing tank, their higher density causes them to sink directly and tend to accumulate at the bottom. During mixing, the liquid must be stirred first to drive the flow, and only then can the solid materials be indirectly dispersed. Only through continuous mixing for a certain period can the desired mixing effect be achieved, meeting the mixing requirements.

[0004] Because the dispersion of solid materials is poor in the early stage of mixing, it directly affects the mixing effect in the early stage, increases the overall time consumption, and limits the overall mixing efficiency. In order to improve the mixing efficiency, a solid-liquid mixing preprocessor to accelerate the early stage mixing efficiency is designed and proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a solid-liquid mixing preprocessor to solve the problem that existing solid-liquid mixing preprocessors have poor dispersion effects on solid materials, which affects the overall mixing efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A solid-liquid mixing preprocessor includes a mixing tank, a tank cover mounted on top of the mixing tank, a drive motor fixed on the tank cover, a solid feed inlet and a liquid feed inlet, a rotating shaft rotatably connected inside the mixing tank and driven by the drive motor, a mixing arm fixedly mounted on the rotating shaft, and a discharge port fixedly connected to the bottom of the mixing tank. Vertical protrusions are equidistantly arranged along the circumference on the inner wall of the mixing tank. An electric heating film is provided in the middle and lower part of the surface of the mixing tank. The surface of the electric heating film is covered with an aluminum foil reflective layer. A protective outer tank is installed on the mixing tank at the position corresponding to the aluminum foil reflective layer. An insulation layer is fixed on the inner wall of the protective outer tank.

[0008] The surface of the rotating shaft is fixed with a feeding disc located above the mixing arm and a turntable located below the mixing arm. The feeding disc is evenly provided with multiple fan-shaped areas. Each fan-shaped area is provided with multiple rows of perforations. The perforations are elongated and perpendicular to the center line of the fan-shaped area. The two ends of the perforations are close to the edge of the fan-shaped area. A rotating shaft perpendicular to the center line of the fan-shaped area is provided in the perforation. The rotating shaft is provided with rotatable beads. The surface of the turntable is provided with a pusher plate and through holes.

[0009] Preferably, the diameter of the liquid inlet is smaller than the diameter of the solid inlet, the liquid inlet corresponds to the position of the feeding plate, and a guide pipe is fixed on the top of the inner wall of the can cover, which corresponds to the position of the solid inlet and extends obliquely to the position above the feeding plate near the rotating shaft.

[0010] Preferably, the outer wall of the mixing tank is fixed with a mounting groove, and the top of the protective outer tank is inserted into the mounting groove.

[0011] Preferably, the height of the protective outer tank is two-thirds of the height of the mixing tank, and the height of the feeding plate corresponds to the height of the mounting groove.

[0012] Preferably, there are several pusher plates arranged in two circles around the rotating shaft, and the surface of the pusher plates is uniformly provided with mixing holes.

[0013] Preferably, the pusher plate includes an inclined pusher plate near the rotating shaft and a pusher mixing plate located outside the inclined pusher plate, wherein the angle between the pusher mixing plate and the horizontal vertical plane is greater than the angle between the inclined pusher plate and the horizontal vertical plane.

[0014] Preferably, a scraper that matches the shape of the bottom of the inner wall of the mixing tank is provided on the surface of the rotating shaft near the bottom.

[0015] Preferably, the scraper includes a bracket fixed on the rotating shaft and a soft scraper blade fixed at the bottom of the bracket in contact with the bottom of the inner wall of the mixing tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) This utility model sets a feeding plate above the mixing arm. When solid and liquid materials are added, they will be preferentially caught by the feeding plate driven by the rotating shaft at high speed. Through the design of the feeding plate, the rotating ball and the perforation, the solid materials are dispersed and sprinkled below, avoiding the accumulation of solid materials and improving the dispersion effect of solid materials in the early stage, thereby achieving the purpose of improving the mixing efficiency. This solves the problem that the existing solid-liquid mixing pre-processor has a poor dispersion effect on solid materials, which affects the overall mixing efficiency.

[0018] (2) Based on the mixing arm, this utility model also adds a turntable and a pusher plate. When the turntable and pusher plate rotate, they can promote the centrifugal motion of the material, thereby promoting the material above the pusher plate to fall. While forming a circular mixing in the circumferential direction, it also forms a vertical mixing in the vertical direction, increasing the types of mixing and improving the mixing efficiency.

[0019] (3) This utility model heats the mixing tank by means of an electric heating film. Compared with the three-dimensional structure of traditional electric heating tubes or fluid heating jackets, the structure of the electric heating film is flatter, which can reduce the space occupied, reduce the size of the equipment, and reduce the weight, thus bringing convenience to the use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the outer protective tank and the mixing tank of this utility model;

[0022] Figure 3 This is a cross-sectional view of the feeding disc of this utility model;

[0023] Figure 4 This is a top cross-sectional view of the corresponding position of the pusher plate of this utility model;

[0024] Figure 5 This is a cross-sectional view of the scraper of this utility model.

[0025] In the diagram: 1. Mixing tank; 2. Tank lid; 3. Drive motor; 4. Solid feed inlet; 5. Liquid feed inlet; 6. Rotating shaft; 7. Mixing arm; 8. Discharge port; 9. Heating film; 10. Aluminum foil reflective layer; 11. Protective outer tank; 12. Insulation layer; 13. Feeding disc; 14. Turntable; 15. Feeding rod; 16. Perforation; 17. Pusher plate; 18. Through hole; 19. Guide pipe; 20. Mounting groove; 21. Inclined pusher plate; 22. Pusher mixing plate; 23. Mixing hole; 24. Scraper; 25. Support; 26. Soft scraper; 27. Raised ridge. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5As shown, this utility model provides a technical solution: a solid-liquid mixing preprocessor, including a mixing tank 1, a tank cover 2 installed on the top of the mixing tank 1, a drive motor 3 fixed on the tank cover 2, a solid feed inlet 4 and a liquid feed inlet 5, a rotating shaft 6 rotatably connected inside the mixing tank 1 and drivingly connected to the drive motor 3, a mixing arm 7 fixedly installed on the rotating shaft 6, and a discharge port 8 fixedly connected to the bottom of the mixing tank 1. Vertical protrusions 27 are equidistantly arranged along the circumference on the inner wall of the mixing tank 1.

[0028] An electric heating film 9 is provided in the middle and lower part of the surface of the mixing tank 1. The surface of the electric heating film 9 is covered with an aluminum foil reflective layer 10. A protective outer tank 11 is installed in the mixing tank 1 at the position corresponding to the aluminum foil reflective layer 10. A ring of mounting grooves 20 is fixed on the outer wall of the mixing tank 1. The top of the protective outer tank 11 is inserted into the mounting grooves 20. The height of the protective outer tank 11 is two-thirds of the height of the mixing tank 1. The height position of the feeding plate 13 corresponds to that of the mounting grooves 20. An insulation layer 12 is fixed on the inner wall of the protective outer tank 11.

[0029] The surface of the rotating shaft 6 is fixed with a feeding plate 13 located above the mixing arm 7 and a turntable 14 located below the mixing arm 7. The feeding plate 13 is evenly provided with multiple fan-shaped areas. Each fan-shaped area is provided with multiple rows of perforations 16. The perforations 16 are long strips and are all perpendicular to the center line of the fan-shaped area. The two ends of the perforations 16 are close to the edge of the fan-shaped area. A rotating shaft perpendicular to the center line of the fan-shaped area is provided in the perforations 16. A rotatable ball bearing 15 is provided on the rotating shaft. The diameter of the liquid inlet 5 is smaller than the diameter of the solid inlet 4. The liquid inlet 5 corresponds to the position of the feeding plate 13. The top of the inner wall of the tank cover 2 is fixed with a guide pipe 19 that corresponds to the position of the solid inlet 4 and extends obliquely to the position above the feeding plate 13 near the rotating shaft 6.

[0030] The surface of the turntable 14 is provided with a pusher plate 17 and a through hole 18. There are several pusher plates 17 and they are arranged in two circles around the rotating shaft 6. The surface of the pusher plate 17 is evenly provided with mixing holes 23. The pusher plate 17 includes an inclined pusher plate 21 close to the rotating shaft 6 and a pusher mixing plate 22 located outside the inclined pusher plate 21. The angle between the pusher mixing plate 22 and the horizontal vertical plane is greater than the angle between the inclined pusher plate 21 and the horizontal vertical plane.

[0031] A scraper 24, which is adapted to the shape of the bottom of the inner wall of the mixing tank 1, is provided on the surface of the rotating shaft 6 near the bottom. The scraper 24 includes a bracket 25 fixed on the rotating shaft 6 and a soft scraper 26 fixed at the bottom of the bracket 25 in contact with the bottom of the inner wall of the mixing tank 1.

[0032] Working principle:

[0033] The drive motor 3 drives the mixing arm 7, the feeding disc 13, the turntable 14, and the scraper 24 to rotate at high speed via the rotating shaft 6. Solid materials are added through the solid feed port 4 and the liquid feed port 5, respectively. The materials are preferentially added to the rotating feeding disc 13. Under the action of centrifugal force, the materials are dispersed on the surface of the feeding disc 13 and agitate the rotating beads 15 in the perforation 16. The rotating beads 15 apply frictional force to the fibers. The dispersed solid materials mixed with the liquid materials enter the lower part of the material through the gap between the perforation 16 and the beads 15 under the action of frictional force. The feeding disc 13 helps to disperse the aggregated fiber materials. The material is dispersed into multiple streams and evenly distributed downwards through the perforations 16. In the mixing tank 1, the material is mixed by the rotation of the mixing arm 7, the pusher plate 17, and the scraper 24. The pusher plate 17, driven by the turntable 14, can push the material around it, promoting the centrifugal motion of the material and promoting the material above the pusher plate 17 to fall down, forming a circular mixing cycle in both the circumferential and vertical directions, thus improving the mixing efficiency. During the mixing process, heating and heat preservation can be achieved through the electric heating film 9. When discharging after mixing, the scraper 24 can clean the residual material at the bottom of the inner wall of the mixing tank 1, promoting the discharge of material.

[0034] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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 solid-liquid mixing preprocessor, comprising a mixing tank (1), a tank cover (2) mounted on the top of the mixing tank (1), a drive motor (3) fixed on the tank cover (2), a solid feed inlet (4) and a liquid feed inlet (5), a rotating shaft (6) rotatably connected inside the mixing tank (1) and driven by the drive motor (3), a mixing arm (7) fixedly mounted on the rotating shaft (6), and a discharge port (8) fixedly connected to the bottom of the mixing tank (1), wherein vertical protrusions (27) are equidistantly arranged along the circumferential direction on the inner wall of the mixing tank (1), characterized in that: An electric heating film (9) is provided in the middle and below the surface of the mixing tank (1). An aluminum foil reflective layer (10) is wrapped around the surface of the electric heating film (9). A protective outer tank (11) is installed in the mixing tank (1) at the position corresponding to the aluminum foil reflective layer (10). An insulation layer (12) is fixed on the inner wall of the protective outer tank (11). The surface of the rotating shaft (6) is fixed with a feeding plate (13) above the mixing arm (7) and a turntable (14) below the mixing arm (7). The feeding plate (13) is evenly provided with multiple fan-shaped areas. Each fan-shaped area is provided with multiple rows of perforations (16). The perforations (16) are long strips and are all perpendicular to the center line of the fan-shaped area. The two ends of the perforations (16) are close to the edge of the fan-shaped area. A rotating shaft perpendicular to the center line of the fan-shaped area is provided in the perforations (16). Rotary beads (15) are provided on the rotating shaft. The surface of the turntable (14) is provided with a pusher plate (17) and a through hole (18).

2. The solid-liquid mixing pre-processor according to claim 1, characterized in that: The diameter of the liquid inlet (5) is smaller than that of the solid inlet (4). The liquid inlet (5) corresponds to the position of the feeding plate (13). The top of the inner wall of the can cover (2) is fixed with a guide pipe (19) that corresponds to the position of the solid inlet (4) and extends obliquely to the position above the feeding plate (13) near the rotating shaft (6).

3. The solid-liquid mixing pre-processor according to claim 1, characterized in that: The outer wall of the mixing tank (1) is fixed with a ring of mounting grooves (20), and the top of the protective outer tank (11) is inserted into the mounting grooves (20).

4. A solid-liquid mixing pre-processor according to claim 3, characterized in that: The height of the protective outer tank (11) is two-thirds of the height of the mixing tank (1), and the height of the feeding plate (13) corresponds to the height of the mounting groove (20).

5. A solid-liquid mixing pre-processor according to claim 1, characterized in that: The pusher plate (17) has several of them and is arranged in two circles around the rotating shaft (6), and the surface of the pusher plate (17) is evenly provided with mixing holes (23).

6. A solid-liquid mixing pre-processor according to claim 5, characterized in that: The pusher plate (17) includes an inclined pusher plate (21) near the rotating shaft (6) and a pusher mixing plate (22) located outside the inclined pusher plate (21). The angle between the pusher mixing plate (22) and the horizontal vertical plane is greater than the angle between the inclined pusher plate (21) and the horizontal vertical plane.

7. A solid-liquid mixing pre-processor according to claim 1, characterized in that: The rotating shaft (6) is provided with a scraper (24) near the bottom, which is adapted to the shape of the bottom of the inner wall of the mixing tank (1).

8. A solid-liquid mixing pre-processor according to claim 7, characterized in that: The scraper (24) includes a bracket (25) fixed on the rotating shaft (6) and a soft scraper (26) fixed at the bottom of the bracket (25) in contact with the bottom of the inner wall of the mixing tank (1).

Images