Stirring device for papermaking

Abstract

The stirring device comprises a machine frame, a stirring barrel, a motor and a bearing seat are arranged on the machine frame, an upper cover is arranged on the top of the stirring barrel, a discharging opening is formed in the lower portion of the stirring barrel, and a stirring mechanism driven by the motor is arranged in the stirring barrel. A stirring paddle of the stirring mechanism not only can efficiently stir waste paper and water under the driving of a motor to form uniform paper pulp, but also can realize telescopic movement under the action of a cam of an adjusting shaft so as to be in contact with the inner wall of the stirring barrel and scrape off the attached paper pulp, so that the design effectively replaces a traditional manual cleaning mode, and the cleaning efficiency is improved. The labor intensity is obviously reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp processing equipment, in particular to a stirring device for papermaking. Background Art

[0002] In the papermaking process of waste paper recycling and reuse, the stirring device fully mixes and hydrates the waste paper raw materials to form uniform pulp, which is the basis for the smooth progress of subsequent processing steps.

[0003] However, when waste paper is put into the stirring device and stirred with water, due to uneven water distribution, complex fiber structure and other reasons, some pulp is likely to adhere to the inner wall of the stirring tank or barrel. Especially after the equipment stops, with the evaporation of water, these adhered pulp will gradually solidify to form residues that are difficult to remove. The existence of these residues not only affects the working efficiency of the stirring device, but also may lead to a decline in pulp quality, because the impurities in the residues may be remixed into the new batch of pulp.

[0004] To remove these solidified pulp residues, the existing technology usually relies on manual cleaning. Manual cleaning not only has a high labor intensity and low efficiency, but also is difficult to completely remove all residues. In addition, frequent manual cleaning will increase the equipment maintenance cost and affect the continuous operation of the production line. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a stirring device for papermaking to solve the problem that the pulp adheres to the inner wall of the stirring equipment and is not easy to clean in the existing technology.

[0006] To achieve the above technical purpose, the technical solution of the utility model provides a stirring device for papermaking, including a frame. A stirring barrel, a motor and a bearing seat are arranged on the frame. The top of the stirring barrel is provided with an upper cover, and the lower part is provided with a discharge port. A stirring mechanism is arranged in the stirring barrel. The stirring mechanism includes a main shaft. One end of the main shaft is connected to the output shaft of the motor, and the other end passes through the stirring barrel and is arranged on the bearing seat. A plurality of stirring paddles are arranged on the main shaft. The main shaft is hollow and an adjusting shaft is arranged inside. The main shaft and the adjusting shaft are coaxially and rotationally connected. The adjusting shaft drives the blades of the stirring paddles to approach or move away from the main shaft. The adjusting shaft and the main shaft are kept rotating synchronously through a positioning mechanism.

[0007] Furthermore, the stirring paddle includes a paddle tube which is perpendicular to and communicates with the axis of the main shaft. A telescopic rod is arranged inside the paddle tube. A ball head is arranged at one end of the telescopic rod inside the main shaft. A cam matching with it is arranged on the adjusting shaft. The paddle blade is arranged at the other end of the main shaft. A limiting ring is arranged inside the paddle tube. A reset ring is arranged on the telescopic rod. A spring is arranged on the telescopic rod between the reset ring and the limiting ring. The restoring force of the spring drives the telescopic rod to approach the adjusting shaft.

[0008] Furthermore, a sealing ring is arranged inside the paddle tube. The sealing ring is arranged between the limiting ring and the paddle blade. A chute is arranged at one end of the paddle tube far away from the main shaft. The width of the chute is adapted to the thickness of the paddle blade.

[0009] Furthermore, the positioning mechanism includes a positioning pin which is polygonal. A telescopic groove matching with it is arranged on the adjusting shaft. A tension spring is arranged between the positioning pin and the bottom of the telescopic groove. A positioning rod is arranged at one end of the positioning pin outside the telescopic groove. The positioning rod is arranged along the radial direction of the adjusting shaft. A positioning groove matching with the positioning rod is arranged at the end of the main shaft.

[0010] Furthermore, the telescopic rod and the paddle blade are connected by a guide pin. A guide groove matching with the guide pin is arranged at one end of the paddle tube far away from the main shaft. Open cover cylinders are arranged at both ends of the stirring barrel. The cylinder body of the open cover cylinder is rotatably connected with the frame, and the piston rod is rotatably connected with the upper cover.

[0011] Compared with the prior art, the beneficial effects of the present utility model include:

[0012] 1. By setting the stirring mechanism, the present utility model realizes the combination of stirring and cleaning functions. Specifically, the stirring paddle can not only efficiently stir waste paper and water under the drive of the motor to form uniform pulp, but also the paddle blade thereon can realize telescopic movement under the action of the cam of the adjusting shaft, so as to contact the inner wall of the stirring barrel and scrape off the attached pulp. This design effectively replaces the traditional manual cleaning method, significantly reduces the labor intensity, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of a stirring device for papermaking provided by the present utility model;

[0014] Figure 2 is a schematic diagram of the stirring mechanism of a stirring device for papermaking provided by the present utility model;

[0015] Figure 3 is an exploded view of the stirring paddle of a stirring device for papermaking provided by the present utility model;

[0016] Figure 4 This is a cross-sectional view of the end of the main shaft of a stirring device for papermaking provided by the present utility model. Detailed implementation manners

[0017] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] Referring to Figure 1 , the present utility model provides a stirring device for papermaking, including a frame 1, on which a stirring barrel 2, a motor 3 and a bearing seat 9 are arranged; a top cover 5 is arranged on the top of the stirring barrel 2 for closing the stirring barrel 2 to prevent the pulp from splashing out during the stirring process. Opening / closing cylinders 4 are installed on the frame 1 at both ends of the stirring barrel 2. The cylinder body of the opening / closing cylinder 4 is rotatably connected to the frame 1, and the piston rod is rotatably connected to the top cover 5. The top cover 5 is automatically opened and closed by the opening / closing cylinder 4, thereby reducing the labor intensity and improving the efficiency; a discharge port (not shown in the figure) is arranged at the lower part of the stirring barrel 2, and a stirring mechanism driven by the motor 3 is installed in the stirring barrel 2.

[0019] Referring to Figure 2 , Figure 3 , the stirring mechanism includes a main shaft 6. One end of the main shaft 6 is connected to the output shaft of the motor 3, and the other end passes through the stirring barrel 2 and is arranged on the bearing seat 9. A number of stirring paddles 8 are arranged on the main shaft 6. The motor 3 drives the main shaft 6 to rotate, thereby driving the stirring paddles 8 to rotate to stir the waste paper and water in the stirring barrel 2; the main shaft 6 is hollow and an adjusting shaft 7 is arranged therein. A positioning mechanism is installed between the main shaft 6 and the adjusting shaft 7 so that the adjusting shaft 7 can rotate together with the main shaft 6.

[0020] The stirring paddle 8 includes a paddle tube 801, which is perpendicular to and communicated with the axis of the main shaft 6. A telescopic rod 802 is installed in the paddle tube 801. A ball head is arranged at one end of the telescopic rod 802 located in the main shaft 6, and a cam 701 is arranged on the adjusting shaft 7 to cooperate with it. When the adjusting shaft 7 rotates, the cam 701 will push the ball head, causing the telescopic rod 802 to expand and contract in the paddle tube 801; the paddle blade 803 is installed at the other end of the main shaft 6, that is, at the end of the paddle tube 801 away from the main shaft 6. The telescopic rod 802 and the paddle blade 803 are connected by a guide pin (not shown in the figure), and a guide groove 809 adapted to the guide pin is arranged at the end of the paddle tube 801 away from the main shaft 6. Such a setting can ensure that the paddle blade 803 does not deviate from the direction during the expansion and contraction process and maintains a stable movement trajectory.

[0021] A limiting ring 804 and a sealing ring 805 are arranged inside the paddle tube 801. The sealing ring 805 is arranged between the limiting ring 804 and the paddle blade 803, and is used to prevent the pulp from entering the inside of the paddle tube 801 and affecting the telescopic movement of the telescopic rod 802. A reset ring 807 is arranged on the telescopic rod 802, and a spring 806 is installed on the telescopic rod 802 between the reset ring 807 and the limiting ring 804. The restoring force of the spring 806 drives the telescopic rod 802 to approach the adjusting shaft 7, so that the paddle blade 803 can maintain a position close to the main shaft 6 when not pushed by the cam 701; a chute 808 is opened at one end of the paddle tube 801 far from the main shaft 6, and the width of the chute 808 is adapted to the thickness of the paddle blade 803. Normally, one side of the paddle blade 803 is kept inside the chute 808. Such a setting can make the paddle blade 803 more stable during the stirring process.

[0022] Referring to Figure 2 、 Figure 4 , the positioning mechanism includes a positioning pin 702. The positioning pin 702 is polygonal. A telescopic groove 704 adapted thereto is arranged on the adjusting shaft 7. A tension spring 705 is arranged between the positioning pin 702 and the bottom of the telescopic groove 704. A positioning rod 703 is arranged at one end of the positioning pin 702 outside the telescopic groove 704. The positioning rod 703 is arranged along the radial direction of the adjusting shaft 7. A positioning groove 601 adapted to the positioning rod 703 is arranged at the end of the main shaft 6. The tension spring 705 keeps the positioning rod 703 in the positioning groove 601, so that the main shaft 6 and the adjusting shaft 7 are fixed together to rotate synchronously. In practical applications, a force adding rod insertion hole is opened on the positioning pin 702 or a pull ring is installed, which is convenient for pulling out the positioning pin 702 and rotating the adjusting shaft 7.

[0023] For the convenience of understanding the present invention, the working principle of the present solution will be described in detail below in conjunction with Figure 1 - Figure 4 :

[0024] During operation, the motor 3 drives the main shaft 6 to rotate, and the main shaft 6 drives the stirring paddle 8 to stir the waste paper and water.

[0025] When it is necessary to clean the inner wall of the stirring barrel 2, pull out the positioning pin 702 and rotate it, so that the cam 701 on the adjusting shaft 7 pushes the ball head on the telescopic rod 802, so that the paddle blade 803 moves away from the main shaft 6 and contacts the inner wall of the stirring barrel 2 to scrape off the pulp attached thereto. Such a setting can effectively replace manual cleaning, reduce the labor intensity and improve the production efficiency.

[0026] After the cleaning is completed, pull out the positioning pin 702 and rotate it again. Due to the restoring force of the spring 806, the paddle blade 803 approaches the main shaft 6 and resets.

[0027] The specific embodiments of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A stirring device for papermaking, comprising a frame, a stirring barrel, a motor and a bearing seat are arranged on the frame, an upper cover is arranged at the top of the stirring barrel, a discharge port is arranged at the lower part, and a stirring mechanism is arranged in the stirring barrel, and it is characterized in that: The stirring mechanism includes a main shaft, one end of the main shaft is connected to the output shaft of the motor, and the other end penetrates through the stirring barrel and is arranged on the bearing seat. A plurality of stirring paddles are arranged on the main shaft. The main shaft is hollow and an adjusting shaft is arranged inside. The main shaft and the adjusting shaft are coaxially and rotationally connected. The adjusting shaft drives the blades of the stirring paddles to approach or move away from the main shaft, and the adjusting shaft and the main shaft are kept rotating synchronously through a positioning mechanism.

2. The stirring device for papermaking according to claim 1, characterized in that: The stirring paddle includes a paddle tube, the paddle tube is perpendicular to the axis of the main shaft and communicates with it. A telescopic rod is arranged inside the paddle tube. A ball head is arranged at one end of the telescopic rod inside the main shaft. A cam matching with it is arranged on the adjusting shaft. The blade is arranged at the other end of the main shaft. A limiting ring is arranged inside the paddle tube. A return ring is arranged on the telescopic rod. A spring is arranged on the telescopic rod between the return ring and the limiting ring. The restoring force of the spring drives the telescopic rod to approach the adjusting shaft.

3. A stirring device for papermaking according to claim 2, characterized in that: A sealing ring is arranged inside the paddle tube, and the sealing ring is arranged between the limiting ring and the blade. A sliding groove is arranged at one end of the paddle tube away from the main shaft, and the width of the sliding groove is adapted to the thickness of the blade.

4. A stirring device for papermaking according to claim 2 or 3, characterized in that: The positioning mechanism includes a positioning pin. The positioning pin is polygonal. A telescopic groove matching with it is arranged on the adjusting shaft. A tension spring is arranged between the positioning pin and the bottom of the telescopic groove. A positioning rod is arranged at one end of the positioning pin outside the telescopic groove. The positioning rod is arranged along the radial direction of the adjusting shaft. A positioning groove matching with the positioning rod is arranged at the end of the main shaft.

5. The stirring device for papermaking according to claim 4, characterized in that: The telescopic rod and the blade are connected through a guide pin. A guide groove matching with the guide pin is arranged at one end of the paddle tube away from the main shaft. Open cover cylinders are arranged at both ends of the stirring barrel. The cylinder body of the open cover cylinder is rotationally connected to the frame, and the piston rod is rotationally connected to the upper cover.

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