Vacuum fan system for paper injection of paper winding cylinder of paper machine
By designing an independent paper lead vacuum pump and paper lead vacuum valve, the vacuum of the initial rolling cylinder is separated from the wet part of the paper machine, which solves the problem of vacuum consumption in the rolling cylinder affecting the vacuum degree of the wet part of the paper machine, and improves the drying and dehydration of the base paper The rate of the base paper roll base reduces the poor foundation and waste.
Patent Information
- Application Number
- CN202420902723.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-04-28
AI Technical Summary
During the production process of paper making machines, the vacuum area of the winding cylinder and the wet vacuum area of the paper machine are used to share a vacuum pump, which causes the vacuum consumption during the initial winding cylinder to lead the paper to affect the vacuum degree of the wet vacuum in the paper machine, and thus affects the drying and dehydration of the base paper. This results in poor foundation and waste of base paper roll base.
Design a paper rolling cylinder paper lead vacuum fan system to separate the vacuum of the initial rolling cylinder from the wet part of the paper machine, and use an independent paper lead vacuum pump and paper lead vacuum valve to ensure the winding area and the wet part of the paper machine zone independent operation.
By separating the vacuum of the initial rolling cylinder from the wet part of the paper machine, the effect of vacuum consumption during the initial rolling cylinder on the vacuum degree of the wet part of the paper machine is eliminated, the drying and dehydration rate of the base paper is improved, and the base paper roll bottom is reduced Bad and wasteful.
Smart Images
Figure CN222475641U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of papermaking machines, in particular to a paper-leading vacuum fan system for a paper reel cylinder of a paper machine. Background Art
[0002] During the production process of the paper machine, when changing rolls, the vacuum area of the reel cylinder needs to form a vacuum to adsorb the paper edge on the reel cylinder and then wind it onto the new roll to complete the roll change. The original design of the reel vacuum tube is connected to the wet end vacuum tube and shares a vacuum pump. The wet end vacuum tube is used to dehydrate the pulp on the wet end felt cloth to facilitate the drying of the base paper. When the vacuum is needed for the initial reel paper feeding, the wet end vacuum degree will be lowered, affecting the dehydration rate of the felt cloth, thereby affecting the moisture of the base paper, resulting in poor bottoming of the base paper roller and waste.
[0003] Therefore, it is necessary to develop a targeted vacuum fan system for the paper machine reel cylinder paper feeding, separate the vacuum of the initial reel cylinder from the vacuum of the wet end of the paper machine, and eliminate the influence of the vacuum consumption during the initial reel cylinder paper feeding on the vacuum degree of the wet end of the paper machine. Utility Model Content
[0004] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a paper machine reel cylinder paper feeding vacuum fan system, which separates the vacuum of the initial reel cylinder from the vacuum of the wet end of the paper machine, and eliminates the influence of the vacuum consumption during the initial reel cylinder paper feeding on the vacuum degree of the wet end of the paper machine.
[0005] Technical solution: The utility model is a paper machine reel cylinder paper feeding vacuum fan system, which is characterized by: comprising a vacuum tube in the winding vacuum area, the vacuum tube in the winding vacuum area is provided with a paper feeding vacuum valve, the vacuum tube in the winding vacuum area is provided with an independent paper feeding vacuum pump, and the vacuum tube in the winding vacuum area is connected to the paper reel cylinder.
[0006] Wherein, the paper reel cylinder is attached to the external paper roll, and the paper reel cylinder is connected to the drying cylinder.
[0007] Wherein, the drying cylinder is bonded to the paper machine felt cloth of the wet part of the paper machine.
[0008] Wherein, the wet section vacuum connecting pipe of the paper machine is provided with a connecting pipe vacuum pump.
[0009] Wherein, the connecting pipe vacuum pump is not connected to the vacuum pipe of the winding vacuum area.
[0010] The motor power of the paper feeding vacuum pump is 15KW, the wind pressure is 3942-5255Pa, and the air volume is 2438-4878m 3 / h.
[0011] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the utility model separates the vacuum of the initial roll cylinder from the vacuum of the wet end of the paper machine, eliminating the influence of the vacuum consumption of the initial roll cylinder during paper feeding on the vacuum degree of the wet end of the paper machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] In the figure, 1 is the paper machine felt; 2 is the drying cylinder; 3 is the vacuum connecting pipe of the wet part of the paper machine; 4 is the connecting pipe vacuum pump; 5 is the paper reel cylinder; 6 is the paper reel; 7 is the vacuum pipe of the reeling vacuum area; 8 is the paper feeding vacuum valve; and 9 is the paper feeding vacuum pump. DETAILED DESCRIPTION
[0014] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0015] The utility model discloses a paper machine reel cylinder paper feeding vacuum fan system, comprising a reel vacuum zone vacuum tube 7, the reel vacuum zone vacuum tube 7 is provided with a paper feeding vacuum valve 8, the reel vacuum zone vacuum tube 7 is provided with an independent paper feeding vacuum pump 9, and the reel vacuum zone vacuum tube 7 is connected to the reel cylinder 5. The reel cylinder 5 is bonded to the external paper roll 6, and the reel cylinder 5 is connected to the drying cylinder 2. The drying cylinder 2 is bonded to the paper machine felt cloth 1 of the wet section of the paper machine. The paper machine wet section vacuum connecting pipe 3 of the paper machine is provided with a connecting pipe vacuum pump 4. The connecting pipe vacuum pump 4 is not connected to the reel vacuum zone vacuum tube 7. The motor power of the paper feeding vacuum pump 9 is 15KW, the wind pressure is 3942-5255Pa, and the air volume is 2438-4878m 3 / h.
[0016] When using, 1. Cut off the vacuum pipe connecting the vacuum area of the reeling cylinder and the wet part of the paper machine. 2. Install a vacuum pump and connect it to the vacuum pipe of the reeling vacuum area. 3. Install a new vacuum pump, add a contactor and add a control circuit. 4. Modify the program. When the paper roll is opened and the paper is threaded, the paper threading vacuum valve opens and the installed vacuum pump starts to feed. 5. After the paper threading is completed, the installed vacuum pump stops automatically and the paper threading vacuum valve closes automatically.
Claims
1. A paper machine reel cylinder paper feeding vacuum fan system, characterized in that: The vacuum pipe (7) in the winding vacuum area is provided with a paper feeding vacuum valve (8), the vacuum pipe (7) in the winding vacuum area is provided with an independent paper feeding vacuum pump (9), and the vacuum pipe (7) in the winding vacuum area is connected to the paper winding cylinder (5).
2. The paper machine reel cylinder paper feeding vacuum fan system according to claim 1, characterized in that: The paper reel cylinder (5) is fitted with an external paper roll (6), and the paper reel cylinder (5) is connected to a drying cylinder (2).
3. The paper machine reel cylinder paper feeding vacuum fan system according to claim 2, characterized in that: The drying cylinder (2) is bonded to the paper machine felt (1) of the wet section of the paper machine.
4. The paper machine reel cylinder paper feeding vacuum fan system according to claim 3, characterized in that: The paper machine wet section vacuum connecting pipe (3) is provided with a connecting pipe vacuum pump (4).
5. The paper machine reel cylinder paper feeding vacuum fan system according to claim 4, characterized in that: The connecting pipe vacuum pump (4) is not connected to the vacuum pipe (7) of the winding vacuum area.
6. The paper machine reel cylinder paper feeding vacuum fan system according to claim 1, characterized in that: The motor power of the paper feeding vacuum pump (9) is 15KW, the wind pressure is 3942-5255Pa, and the wind volume is 2438-4878m 3 / h.