A pulp mixing and stirring device

Abstract

The utility model provides a kind of paper pulp mixing and stirring device, it is related to paper pulp processing technical field, and the paper pulp in storage cylinder can form more intense, more comprehensive three-dimensional circulation flow effect by the cooperation of two groups of high-speed rotating cone pipe stirring assembly and the high-pressure airflow blowing from bottom to top, while the synergistic effect of cone pipe stirring and blowing makes the fiber more evenly and more detailed dispersed in paper pulp, and then the paper pulp in different areas of storage cylinder can be fully intermingled, and the mixing and stirring effect of paper pulp is better.

Description

Technical Field

[0001] This utility model relates to the field of pulp processing technology, and more specifically, to a pulp mixing and stirring device. Background Technology

[0002] Pulp is a fibrous material made from plant fibers through various processing methods. It is the main raw material in the papermaking industry. Currently, it is necessary to mix and stir the pulp to ensure that different fiber raw materials (such as wood pulp, straw pulp, and recycled pulp) are fully mixed, ensuring uniform pulp composition and avoiding uneven paper properties.

[0003] The announcement number CN221432868U proposes a pulp mixing and stirring device. Although the device can achieve pulp mixing and stirring, it can only form horizontal stirring during the stirring process. The pulp in the upper part and the pulp in the lower part cannot be fully mixed, so the mixing and stirring effect of the pulp needs to be improved. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to propose a pulp mixing and stirring device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A pulp mixing and stirring device includes a storage cylinder. The cover and the storage cylinder are movably connected via mounting components; The open-ended circular tube is rotatably connected to the cover. The servo gear transmission assembly is fixed to the cover and connected to the round tube; The rotary joint is connected to the high-pressure air pump and the top of the round pipe respectively, and the high-pressure air pump is connected to the air source; Two sets of conical tube mixing components are arranged along the height direction of the circular tube; The bottom end of the round shell is connected to the bottom end of the round tube, and several jet pipes are arranged on the circumference of the round shell; A one-way valve that only allows air to flow out and not into is installed on each jet pipe.

[0006] Furthermore, the mounting assembly includes a mounting plate, a fixing plate, a screw, and threaded holes. The mounting plates are symmetrically welded onto the cover, and the mounting plates are internally threaded with screws. The fixing plates are symmetrically welded onto the storage cylinder, and the fixing plates and the mounting plates are distributed opposite each other. The threaded hole is made on the fixed plate and mates with the screw.

[0007] Furthermore, the servo gear transmission assembly includes a servo motor, a main gear, and a secondary gear. The servo motor is fixed to the cover and is connected to the main gear; The auxiliary gear is fixed on the round tube and meshes with the main gear.

[0008] Furthermore, the conical tube stirring assembly includes a mounting ring, a connecting rod, and several tapered tubes. Two mounting rings are fixed sequentially along the height direction of the circular tube; Four connecting rods are circumferentially welded to the mounting ring; The tapered tubes are welded to the connecting rods one by one, and the four tapered tubes on the same mounting ring face different directions.

[0009] Furthermore, the circular tube is provided with a dual stirring and shearing assembly that is staggered and spaced apart from the conical tube stirring assembly.

[0010] Furthermore, the dual-stirring and shearing assembly includes a stirring rod and an arc-shaped blade. The stirring rod is welded obliquely onto the round tube, and the stirring rod is equipped with several arc-shaped blades that are spaced apart from the tapered tube.

[0011] Furthermore, the cover is provided with a protective shell that allows the circular tube to pass through and is located outside the servo gear transmission assembly.

[0012] Furthermore, handles are symmetrically arranged on the cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This application uses two sets of high-speed rotating conical tube stirring components combined with high-pressure airflow from bottom to top to make the pulp form a stronger and more comprehensive three-dimensional circulation effect in the storage tank. At the same time, the synergistic effect of the conical tube stirring and air blowing allows the fibers to be dispersed more evenly and finely in the pulp, so that the pulp in different areas of the storage tank can be fully mixed, and the mixing effect of the pulp is better. 2. Based on the synergistic effect of tapered tube stirring and air blowing, this application further widens the stirring direction through a double stirring and shearing component, making the fibers in the pulp finer and the dispersion effect better. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation of the dual-stirring and shearing assembly; Figure label: 1. Storage cylinder; 2. Cover; 3. Mounting assembly; 31. Mounting plate; 32. Fixing plate; 33. Screw; 4. Round tube; 5. Servo gear transmission assembly; 6. Rotary joint; 7. High-pressure air pump; 8. Conical tube stirring assembly; 81. Mounting ring; 82. Tapered tube; 9. Round shell; 10. Jet pipe; 11. One-way valve; 12. Stirring rod; 13. Arc blade; 14. Protective shell; 15. Handle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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 scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments: like Figure 1 As shown, a pulp mixing and stirring device includes a storage cylinder 1. The cover 2 and the storage cylinder 1 are movably connected by the mounting assembly 3; The open-ended circular tube 4 is rotatably connected to the cover 2 via bearings; The servo gear transmission assembly 5 is fixed on the cover 2 and connected to the round tube 4; The rotary joint 6 is connected to the high-pressure air pump 7 and the top of the round pipe 4 respectively, and the high-pressure air pump 7 is connected to the air source (the air source is not shown in the figure). Two sets of conical tube stirring components 8 are arranged along the height direction of the circular tube 4; The round shell 9 is connected to the bottom end of the round tube 4, and several jet pipes 10 are arranged on the circumference of the round shell 9. A one-way valve 11 that only allows outflow and not inflow is installed on each jet pipe 10.

[0016] Specific implementation of this utility model solution, such as Figure 1 As shown, the mounting assembly 3 includes a mounting plate 31, a fixing plate 32, a screw 33, and threaded holes. Mounting plates 31 are symmetrically welded to the cover 2, and screws 33 are internally threaded onto the mounting plates 31 (more preferably, a knob is provided at the top of the screws 33). The fixing plates 32 are symmetrically welded onto the storage cylinder 1, and the fixing plates 32 and the mounting plates 31 are distributed opposite each other. A non-penetrating threaded hole is provided on the fixed plate 32, and the threaded hole mates with the bottom end of the screw 33 (the threaded hole is not shown in the figure).

[0017] Specific implementation of this utility model solution, such as Figure 1 As shown, the servo gear transmission assembly 5 includes a servo motor, a main gear, and a secondary gear. The servo motor is fixed on the cover 2 and is connected to the main gear; The auxiliary gear is fixed on the circular tube 4, and the auxiliary gear meshes with the main gear.

[0018] Specific implementation of this utility model solution, such as Figure 1 As shown, the conical tube stirring assembly 8 includes a mounting ring 81, a connecting rod, and several tapered tubes 82 (the connecting rod is shown in the figure but is not labeled). Two mounting rings 81 are fixed sequentially along the height direction of the circular tube 4; Four connecting rods are circumferentially welded onto the mounting ring 81; The tapered tubes 82 correspond one-to-one with the connecting rods and are welded together, and the four tapered tubes 82 on the same mounting ring 81 face different directions.

[0019] To further improve the mixing effect of the pulp and enhance the fiber refinement effect, further optimizations to the above-mentioned embodiments are made, such as... Figure 2 As shown, the circular tube 4 is provided with a double stirring and shearing assembly that is staggered and spaced apart from the conical tube stirring assembly 8; The dual-stirring and shearing assembly includes a stirring rod 12 and an arc-shaped blade 13. The stirring rod 12 is welded obliquely to the circular tube 4, and the stirring rod 12 is provided with several arc-shaped blades 13 that are spaced apart from the tapered tube 82. The arc-shaped blades 13 can further cut the fibers in the pulp to refine them.

[0020] To make the design more aesthetically pleasing and reduce safety hazards during operation, the above-described embodiments are further optimized, such as... Figure 2 As shown, a protective shell 14 is provided on the cover 2 by bolts, which allows the round tube 4 to pass through and is located outside the servo gear transmission assembly 5; At the same time, in order to facilitate the removal and placement of the cover 2, such as Figure 2 As shown, handles 15 are symmetrically arranged on the cover 2.

[0021] It should be noted that the servo motor and the high-pressure air pump 7 are both electrically connected to the PLC control panel, which is not shown in the figure.

[0022] The working process of this utility model: Initially, the cover 2 is moved away from the storage cylinder 1, and then the pulp is added into the storage cylinder 1. After the pulp is added, the cover 2 is accurately installed through the installation component 3 to seal the top of the storage cylinder 1 (a rubber ring is provided on the inner edge of the cover to reduce the probability of pulp overflowing during subsequent mixing). Then, the servo motor and high-pressure air pump 7 are started through the PLC control panel. After the servo motor is running, it can realize the high-speed rotation of the conical tube stirring assembly 8 in conjunction with the gear transmission. At the same time, the pressurized air source flows through the inside of the circular tube 4 and is injected into the circular shell 9. Then the air source is sprayed out from the jet pipe 10 and blows air from the lower part of the storage cylinder 1 to the upper part (the one-way valve 11 can prevent the pulp from flowing into the inside of the circular shell 9). At this time, the airflow pushes the pulp upward and accelerates the pulp rise. In the upper part, the conical tube stirring assembly 8 drives the pulp to rotate and diffuse, and the airflow assists the pulp to disperse more quickly in all directions, so that the pulp forms a stronger and more comprehensive three-dimensional circulation flow effect in the storage cylinder 1. This all-round circulation flow allows the chemical pulp, mechanical pulp, recycled pulp and additives in the pulp to come into contact and mix more frequently, regardless of where they are in the storage cylinder 1, which significantly improves the uniformity of pulp mixing. In addition, the shear force generated by the high-speed rotating tapered tubes through the change in linear velocity gradient can initially disperse the fiber aggregates. Furthermore, the upward airflow exerts additional impact and friction on the fibers during its ascent, further breaking down larger fiber aggregates and refining the fiber structure. The presence of airflow keeps the fibers in a suspended and dynamic state within the storage cylinder 1, reducing the probability of fibers agglomerating due to gravity or mutual adsorption. This synergistic effect of the tapered tube 82 stirring and blowing allows the fibers to be dispersed more evenly and finely in the pulp, avoiding paper quality problems caused by uneven fiber distribution, thereby improving the quality of subsequent paper production. In addition, this design further shears larger fibers and fiber aggregates in the pulp through a double mixing and shearing assembly. At the same time, the inclined stirring rod 12 forms a stirring in more directions to further improve the mixing effect of the pulp. After the mixing is completed, the installation assembly 3 can be operated to release the lock between the cover 2 and the storage cylinder 1. Then, the cover 2 can be removed by the handle 15. Then, the storage cylinder 1 can be transferred for pulp unloading and subsequent processing.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pulp mixing and stirring device, characterized in that, Including storage tube (1) The cover (2) and the storage tube (1) are movably connected by the mounting assembly (3); The open-ended circular tube (4) is rotatably connected to the cover (2); The servo gear transmission assembly (5) is fixed on the cover (2) and connected to the round tube (4); The rotary joint (6) is connected to the high-pressure air pump (7) and the top of the round pipe (4) respectively, and the high-pressure air pump (7) is connected to the air source; Two sets of conical tube stirring components (8) are arranged along the height direction of the circular tube (4); The bottom end of the round shell (9) is connected to the round tube (4), and several jet pipes (10) are arranged on the circumference of the round shell (9). A one-way valve (11) that only allows outflow and not inflow is installed on each jet pipe (10).

2. The pulp mixing and stirring device according to claim 1, characterized in that, The mounting assembly (3) includes a mounting plate (31), a fixing plate (32), a screw (33), and threaded holes. The mounting plate (31) is symmetrically welded to the cover (2), and the mounting plate (31) is internally threaded with a screw (33). The fixing plate (32) is symmetrically welded to the storage cylinder (1), and the fixing plate (32) and the mounting plate (31) are distributed opposite each other; The threaded hole is opened on the fixed plate (32) and the threaded hole is matched with the screw (33).

3. The pulp mixing and stirring device according to claim 1, characterized in that, The servo gear transmission assembly (5) includes a servo motor, a main gear, and a secondary gear. The servo motor is fixed on the cover (2) and is connected to the main gear; The auxiliary gear is fixed on the round tube (4) and meshes with the main gear.

4. The pulp mixing and stirring device according to claim 1, characterized in that, The conical stirring assembly (8) includes a mounting ring (81), a connecting rod, and several tapered tubes (82). Two mounting rings (81) are fixed sequentially along the height direction of the circular tube (4); Four connecting rods are circumferentially welded onto the mounting ring (81); The tapered tubes (82) correspond one-to-one with the connecting rods and are welded together, and the four tapered tubes (82) on the same mounting ring (81) face different directions.

5. The pulp mixing and stirring device according to claim 4, characterized in that, The circular tube (4) is provided with a double stirring and shearing assembly that is staggered and spaced apart from the conical tube stirring assembly (8).

6. The pulp mixing and stirring device according to claim 5, characterized in that, The dual stirring and shearing assembly includes a stirring rod (12) and an arc-shaped blade (13). The stirring rod (12) is welded obliquely to the round tube (4), and the stirring rod (12) is provided with several arc-shaped blades (13) that are spaced apart from the tapered tube (82).

7. The pulp mixing and stirring device according to claim 1, characterized in that, The cover (2) is covered with a protective shell (14) that allows the round tube (4) to pass through and is located outside the servo gear transmission assembly (5).

8. The pulp mixing and stirring device according to claim 1, characterized in that, The cover (2) is symmetrically provided with handles (15).

Images