A paper tube raw paper pulp tower pulp material circulating device

Abstract

The utility model relates to papermaking technical field discloses a kind of paper tube raw paper pulp tower slurry circulation device, including pulp tower body, the left side of pulp tower body is provided with pulp tower circulating pump, the input end of pulp tower circulating pump is fixedly connected with pipeline one, the output end of pulp tower circulating pump is fixedly connected with pipeline two, the top of pipeline two is fixedly connected with circulating pipeline solenoid valve, the top of circulating pipeline solenoid valve is fixedly connected with pipeline three, the right side of pulp tower body is provided with pulp tower thickener pump, the input end of pulp tower thickener pump is fixedly connected with pipeline four, the output end of pulp tower thickener pump is fixedly connected with pipeline five, the inner wall of pulp tower body is provided with pulp tower agitator on one side.In the utility model, the rapid vertical circulation of slurry is forced to be realized by pulp tower circulating pump, so that the new formula slurry is uniformly mixed with the original slurry in the tower in a short time, the transition time of product switching is shortened, and the overall production efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and in particular to a pulp circulation device for a paper tube pulp tower. Background Technology

[0002] As the core material for producing high-strength paper tubes, paper tube base paper has stringent requirements for interlayer bonding strength and bursting strength. In order to meet these special performance requirements, the fibers need to be beaten to a higher degree during the pulping process to increase the bonding force between the fibers. This specially treated high-freeze pulp requires a stable, large-capacity storage and buffering system to ensure a continuous and uniform supply to the papermaking section. Therefore, paper tube base pulp towers, which are specially designed to store this specific pulp, have emerged. The paper tube pulp tower is equipped with a pulp inlet, a pulp outlet, and an agitator. Its working principle is as follows: qualified pulp that has been screened and purified is pumped into the tower through the pulp inlet at the top for storage. The agitator inside the tower runs continuously to keep the pulp concentration and physical properties uniform and prevent fiber sedimentation. When production is required, the pulp is drawn out from the pulp outlet at the bottom of the tower. The whole process aims to achieve continuous pulp supply and buffering to match the uninterrupted production needs of the paper machine. However, existing pulp towers have shortcomings in papermaking production. The pulp in tall pulp towers is difficult to mix evenly, and it usually enters the subsequent stages in a first-in-first-out mode. When producing high-requirement paper tube base paper that requires high beating degree, it will deteriorate the dewatering efficiency of the wire section, forcing the paper machine to slow down and reduce the pulp circulation speed. When switching products, this flow characteristic will cause fluctuations in the pulp beating degree, leading to paper machine instability and paper breakage, which seriously affects the continuity and efficiency of production. To solve these problems, a pulp circulation device for paper tube base paper pulp tower is proposed. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a pulp circulation device for paper tube pulp towers, which aims to improve the problems of uneven pulp mixing in the pulp tower, the first-in-first-out mode affecting dewatering efficiency, paper machine speed reduction, and slowed circulation in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pulp circulation device for a paper tube pulp tower, comprising a pulp tower body, a pulp tower circulation pump arranged on the left side of the pulp tower body, a pipe one fixedly connected to the input end of the pulp tower circulation pump, a pipe two fixedly connected to the output end of the pulp tower circulation pump, a circulation pipe solenoid valve fixedly connected to the top end of the pipe two, and a pipe three fixedly connected to the top end of the circulation pipe solenoid valve. As a further description of the above technical solution: A slurry tower pump is installed on the right side of the slurry tower body. The input end of the slurry tower pump is fixedly connected to pipe four, and the output end of the slurry tower pump is fixedly connected to pipe five. As a further description of the above technical solution: A slurry tower agitator is provided on one side of the inner wall of the slurry tower body; As a further description of the above technical solution: A storage well is provided on the right side of the slurry tower body; As a further description of the above technical solution: The end of the pipeline away from the solenoid valve of the circulating pipeline is located at the top of the slurry tower body; As a further description of the above technical solution: One end of the pipeline, away from the slurry tower circulation pump, is located on the left side of the slurry tower body; As a further description of the above technical solution: The end of the pipeline furthest from the slurry tower pump is located on the right side of the slurry tower body; As a further description of the above technical solution: The end of the pipeline away from the slurry tower pump is located inside the storage well.

[0005] This utility model has the following beneficial effects: 1. In this utility model, the rapid vertical circulation of slurry is achieved by the slurry tower circulation pump. Compared with the slow process of traditional first-in-first-out, it can make the new formula slurry mix evenly with the original slurry in the tower in a short time, shorten the transition time of product switching and effectively improve the overall production efficiency.

[0006] 2. In this utility model, forced circulation ensures that the old and new pulps are fully premixed when switching products, which solves the problem of drastic changes in the freeness index of the pulp on the paper machine caused by uneven mixing in traditional pulp towers. By forming a pulp system with a smooth performance transition, the changes in the pulp index supplied to the paper machine are guaranteed to be gradual, avoiding operational fluctuations or even paper breaks caused by the paper machine's inability to adapt to sudden changes in pulp, thereby improving the stability of the production process.

[0007] 3. In this utility model, when the paper is downgraded due to low interlayer bonding strength, pulp with high solubility can be recycled more quickly to correct the index and reduce the loss caused by downgrade, thereby reducing the economic loss caused by product downgrade. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of a pulp circulation device for a paper tube pulp tower proposed in this utility model.

[0009] Legend: 1. Pulp tower body; 2. Pulp tower agitator; 3. Pulp tower slurry pump; 4. Storage well; 5. Solenoid valve for circulation pipeline; 6. Pulp tower circulation pump; 7. Pipeline 1; 8. Pipeline 2; 9. Pipeline 3; 10. Pipeline 4; 11. Pipeline 5. Detailed Implementation

[0010] 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.

[0011] Reference Figure 1 This utility model provides an embodiment of a pulp circulation device for a paper tube pulp tower, comprising a pulp tower body 1. When product specification switching or online adjustment of pulp performance is required, the pulp tower circulation pump 6 located on the left side of the pulp tower body 1 will function to achieve rapid vertical mixing of pulp through forced circulation, shortening the product switching transition time and improving production efficiency. The input end of the pulp tower circulation pump 6 is fixedly connected to a pipe 7, which is used to extract pulp from the middle and lower part of the pulp tower body 1 to provide raw material for subsequent circulation mixing. The output end of the pulp tower circulation pump 6 is fixedly connected to a pipe 8, which is responsible for transporting the pulp extracted by the pulp tower circulation pump 6 to the circulation pipe solenoid valve 5. The top end of the pipe 8 is fixedly connected to the circulation pipe solenoid valve 5, which controls the opening and closing of the pulp circulation path to ensure smooth conduction when circulation is required. The top end of the circulation pipe solenoid valve 5 is fixedly connected to... Pipeline 3 (9) is connected to the pulp tower body 1. Pipeline 3 (9) sends the pulp that has passed through the circulating pipeline solenoid valve 5 back to the top of the pulp tower body 1, realizing the vertical circulation of the pulp from top to bottom. A pulp tower agitator 2 is set on one side of the inner wall of the pulp tower body 1. The pulp tower agitator 2 works in conjunction with the pulp tower circulation pump 6 to further promote the uniform mixing of the pulp and solve the problem of uneven mixing in traditional pulp towers. A storage well 4 is set on the right side of the pulp tower body 1. The storage well 4 is used to store the uniformly mixed pulp and provide a stable pulp supply for the paper machine. The end of pipe 3 (9) away from the circulating pipeline solenoid valve 5 is set at the top of the pulp tower body 1. This setting can ensure that the pulp flows back from the top and realize the effective circulation and mixing of the pulp in the entire pulp tower. The end of pipe 1 (7) away from the pulp tower circulation pump 6 is set on the left side of the pulp tower body 1. This position setting can draw pulp from the lower part of the pulp tower body 1, providing a basis for the subsequent rapid vertical circulation of the pulp through the pulp tower circulation pump 6.

[0012] Reference Figure 1A slurry pump 3 is installed on the right side of the slurry tower body 1. The slurry pump 3 is used to extract the uniformly mixed slurry inside the slurry tower body 1 to provide power for subsequent transportation to the storage well 4. The input end of the slurry pump 3 is fixedly connected to a pipe 4 10, which is responsible for extracting the mixed slurry from the right side of the slurry tower body 1. The output end of the slurry pump 3 is fixedly connected to a pipe 5 11, which transports the slurry extracted by the slurry pump 3 to the storage well 4. The end of the pipe 4 10 furthest from the slurry pump 3 is located on the right side of the slurry tower body 1. This setup ensures that the pulp extraction location is reasonable, and that uniformly mixed pulp can be obtained. The end of pipe 5 11 away from the pulp tower pump 3 is located inside the storage well 4. Through the cooperation of the pulp tower pump 3, pipe 4 10 and pipe 5 11, the changes in pulp parameters supplied to the paper machine are ensured to be gradual, avoiding fluctuations in the paper machine's operation or even paper breakage due to its inability to adapt to sudden changes in pulp, thus improving the stability of the production process. At the same time, when the paper is downgraded due to low interlayer bonding strength, pulp with high beating degree can be circulated more quickly to correct the parameters and reduce the losses caused by downgrade.

[0013] Working principle: When product specification switching or online adjustment of pulp performance is required, the operator will start the pulp tower circulation pump 6. The pulp tower circulation pump 6 draws pulp from the middle and lower part of the pulp tower body 1 through pipe 1 7, passes through pipe 2 8 and the opened circulation pipe solenoid valve 5, and then sends the pulp back to the top of the pulp tower body 1 through pipe 3 9. This process forces the rapid, top-down vertical circulation and mixing of the pulp inside the pulp tower body 1, effectively coordinating with the work of the pulp tower agitator 2. Whether it is newly added high-grade pulp or adjusted high-beating-degree pulp, it can be quickly and evenly mixed with the existing pulp in the tower. The evenly mixed pulp is then drawn by the pulp tower lifting pump 3 to the storage well 4 for use by the paper machine. In this way, the device ensures that during the formula adjustment, the key indicator of beating degree of the pulp delivered to the paper machine changes smoothly and stably, thus giving the operator sufficient reaction time, reducing the risk of unstable paper machine operation or paper breakage caused by drastic changes in pulp properties, and shortening the response time of process adjustment.

[0014] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A paper tube base paper pulp tower pulp circulation device comprising a pulp tower body (1), characterized in that: A slurry tower circulation pump (6) is provided on the left side of the slurry tower body (1). The input end of the slurry tower circulation pump (6) is fixedly connected to a pipe (7). The output end of the slurry tower circulation pump (6) is fixedly connected to a pipe (8). A circulation pipe solenoid valve (5) is fixedly connected to the top end of the pipe (8). A pipe (9) is fixedly connected to the top end of the circulation pipe solenoid valve (5).

2. A paper tube base paper pulp tower pulp circulation device according to claim 1, characterized in that: A slurry pump (3) is provided on the right side of the slurry tower body (1). The input end of the slurry pump (3) is fixedly connected to pipe four (10), and the output end of the slurry pump (3) is fixedly connected to pipe five (11).

3. A paper tube raw paper pulp tower pulp circulating device according to claim 1, characterized in that: A slurry tower agitator (2) is provided on one side of the inner wall of the slurry tower body (1).

4. The pulp circulation device for a paper tube pulp tower according to claim 1, characterized in that: A storage well (4) is provided on the right side of the slurry tower body (1).

5. A paper tube body pulp tower pulp circulating device according to claim 1, characterized in that: The end of the third pipe (9) away from the solenoid valve (5) of the circulating pipe is located at the top of the slurry tower body (1).

6. A paper tube body pulp tower pulp circulating device according to claim 1, characterized in that: The end of the pipeline (7) away from the slurry tower circulating pump (6) is located on the left side of the slurry tower body (1).

7. A paper tube body pulp tower pulp circulating device according to claim 2, characterized in that: The end of the fourth pipe (10) away from the slurry pump (3) is located on the right side of the slurry tower body (1).

8. A paper tube body pulp tower pulp circulating device according to claim 2, characterized in that: The end of the pipeline five (11) away from the slurry tower pump (3) is located inside the storage well (4).

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