A low-permeability dry wire paper stabilization structure

Abstract

This utility model discloses a low-permeability dry wire paper stabilization structure, including a drying cylinder, a paper stabilization cylinder, a low-permeability dry wire, a paper stabilization box disposed between the drying cylinder and the paper stabilization cylinder, and a negative pressure vacuum pump connected to the paper stabilization cylinder and the paper stabilization box through an air extraction pipe; the paper stabilization box has negative pressure ports on both sides facing the low-permeability dry wire, the negative pressure ports extending towards and abutting against the low-permeability dry wire; the paper stabilization box is provided with a transverse moving dry wire and a pressure assembly; the pressure assembly is arrayed inside the paper stabilization box and faces the low-permeability dry wire, the transverse moving dry wire is fixedly installed on the movable end of the pressure assembly, the transverse moving dry wire is parallel to the low-permeability dry wire at the negative pressure port, and the pressure assembly pushes the transverse moving dry wire to move towards the low-permeability dry wire; by pushing the transverse moving dry wire towards the low-permeability dry wire by the pressure assembly, the air permeability can be flexibly adjusted, and the vacuum degree in the paper stabilization box can be maintained, thereby improving the quality of the paper.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment, specifically to a low-permeability dry wire paper stabilization structure. Background Technology

[0002] Paper drying involves using multiple cylinders filled with steam to heat and dry the paper. The paper web is repeatedly wound around the drying surface by the drying wire, with stabilizing cylinders and stabilizers to keep the paper web stable and reduce swaying. In the production of linerboard, there are thick and thin sheets. Thin linerboard, due to its thinness and high air permeability, draws in a large amount of air when the blower picks up the paper web, preventing the vacuum from being established. Existing drying wires have excessively high air permeability, which is not adjustable. This often results in the drying wire covering the stabilizing system exceeding the width of the paper web. The exposed portion can draw in a large amount of air, preventing the vacuum from being established, causing the paper web to stick to the drying cylinder surface, leading to folds or even breaks. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a low-permeability dry wire paper stabilization structure to solve the above-mentioned problems.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a low-permeability dry wire paper stabilizing structure, including symmetrically and spaced-apart drying cylinders, a paper stabilizing cylinder disposed below the drying cylinders, a low-permeability dry wire wrapped around the drying cylinders and the paper stabilizing cylinders, a paper stabilizing box disposed between the drying cylinders and the paper stabilizing cylinders, and a negative pressure vacuum pump connected to the paper stabilizing cylinders and the paper stabilizing box through an air extraction pipe; the paper stabilizing box is provided with negative pressure ports on both sides of the low-permeability dry wire, the negative pressure ports extending toward and abutting against the low-permeability dry wire; a transverse dry wire and a pressure assembly are disposed inside the paper stabilizing box; the pressure assembly array is disposed inside the paper stabilizing box and facing the low-permeability dry wire, the transverse dry wire is fixedly installed on the movable end of the pressure assembly, the transverse dry wire is parallel to the low-permeability dry wire at the negative pressure port, and the pressure assembly pushes the transverse dry wire to move toward the low-permeability dry wire.

[0005] Preferably, the pressure assembly is an elastic pressure assembly, which includes a housing, a movable rod, a flange, and a pressure spring. The housing includes a receiving cavity and a limiting groove. One end of the movable rod enters the receiving cavity through the limiting groove. The flange is disposed in the receiving cavity and fixed to one end of the movable rod. The pressure spring is disposed in the receiving cavity, with one end abutting against the flange and the other end abutting against the interior of the receiving cavity.

[0006] Preferably, the end of the housing away from the movable rod has a hinge hole, an adjusting screw is provided in the hinge hole, a movable block is provided between the pressure spring and the housing, the movable block has a threaded hole, and one end of the adjusting screw enters the threaded hole to achieve threaded engagement.

[0007] Preferably, the movable block has a storage groove at the end facing the movable rod.

[0008] Preferably, a limiting strip is provided at the negative pressure port, and a fixing frame is provided around the transverse moving mesh, with a slot on the fixing frame corresponding to the limiting strip.

[0009] Preferably, the pressure component is an electric push rod, and a pressure detection sensor is fixedly installed on the inner wall of the paper box, and the pressure detection sensor is electrically connected to the electric push rod.

[0010] Preferably, the air permeability of the transverse dry net is lower than or equal to the air permeability of the low-permeability dry net.

[0011] The main technical effects of this invention are as follows: A pressure component pushes the transverse moving wire towards a specific direction, followed by a negative pressure vacuum pump drawing a vacuum into the paper stabilizing cylinder of the paper stabilizing box. When the paper is thin, its permeability increases, causing the vacuum level inside the paper stabilizing box to decrease. The thrust on the transverse moving wire decreases after the negative pressure vacuum and external gas passes through the paper and the low-permeability wire. Driven by the pressure component, the transverse moving wire moves closer to the low-permeability wire, reducing permeability and increasing the vacuum level inside the paper stabilizing box, thus maintaining the paper's suction. Conversely, when the paper is thick, permeability decreases, and the transverse moving wire is pressured away from the low-permeability wire, increasing permeability. Furthermore, the low-permeability wire further reduces permeability, preventing the vacuum level inside the paper stabilizing box from becoming too low. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention;

[0013] Figure 2 A cross-sectional view of a stable cardboard box;

[0014] Figure 3 for Figure 1 A cross-sectional view along line AA.

[0015] The attached diagram is labeled as follows: 1-drying cylinder, 2-paper stabilizing cylinder, 3-low-permeability drying net, 4-paper stabilizing box, 41-negative pressure port, 42-limiting edge strip, 5-extraction pipe, 6-negative pressure vacuum pump, 7-transverse drying net, 71-fixed frame, 72-slot, 8-elastic pressure component, 81-shell, 811-storage cavity, 812-limiting groove, 813-hinge hole, 82-moving rod, 83-flange, 84-pressure spring, 85-adjusting screw, 86-moving block, 861-threaded hole, 862-storage groove. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0017] In this embodiment, it should be understood that the terms "middle," "upper," "lower," "top," "right side," "left end," "above," "back," "center," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0018] Furthermore, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, pin fixing, or pin connection commonly used in the prior art. Therefore, it will not be described in detail in this embodiment.

[0019] This utility model provides a low-air-permeability dry wire paper stabilization structure, such as Figure 1-3As shown, the system includes symmetrically spaced drying cylinders 1, a paper stabilizing cylinder 2 positioned below the drying cylinders 1, low-permeability drying mesh 3 wound around the drying cylinders 1 and the paper stabilizing cylinder 2, a paper stabilizing box 4 positioned between the drying cylinders 1 and the paper stabilizing cylinder 2, and a negative pressure vacuum pump 6 connected to the paper stabilizing cylinder 2 and the paper stabilizing box 4 via a suction pipe 5. The paper stabilizing box 4 has negative pressure ports 41 facing the low-permeability drying mesh 3 on both sides, extending towards and abutting the low-permeability drying mesh 3. A transverse moving dry mesh 7 and a pressure assembly are disposed inside the paper stabilizing box 4. The pressure assembly array is disposed inside the paper stabilizing box 4 and faces the low-permeability drying mesh 3. The transverse moving dry mesh 7 is fixedly installed on the movable end of the pressure assembly, and is parallel to the low-permeability drying mesh 3 at the negative pressure ports 41. The force component pushes the transverse dry wire 7 towards the low-permeability dry wire 3. The pressure component further pushes the transverse dry wire 7 towards the low-permeability dry wire 3. Then, the negative pressure vacuum pump 6 evacuates the paper stabilizing box 4 and the paper stabilizing cylinder 2. When the paper is thin, the air permeability increases, and the vacuum level inside the paper stabilizing box 4 decreases. The thrust on the transverse dry wire 7 decreases after the negative pressure vacuum and external gas passes through the paper and the low-permeability dry wire 3. The transverse dry wire 7 then moves closer to the low-permeability dry wire 3 under the push of the pressure component. When the transverse dry wire 7 approaches the low-permeability dry wire 3, the air permeability decreases, thus increasing the vacuum level inside the paper stabilizing box 4 and maintaining the paper's suction. Conversely, when the paper is thick, the air permeability decreases, and the transverse dry wire 7 is pressured away from the low-permeability dry wire 3, increasing the air permeability. Furthermore, the low-permeability dry wire 3 also reduces the air permeability, preventing the vacuum level inside the paper stabilizing box 4 from becoming too low.

[0020] In this embodiment, preferably, the air permeability of the transverse dry net 7 is lower than or equal to the air permeability of the low-permeability dry net 3. In this embodiment, when the transverse dry net 7 comes into contact with the low-permeability dry net 3, the overall vertical void area of ​​the low-permeability dry net 3 and the transverse dry net 7 is reduced due to overlap, thereby reducing the air permeability.

[0021] Preferably, the pressure assembly is an elastic pressure assembly 8, which includes a housing 81, a movable rod 82, a flange 83, and a pressure spring 84. The housing 81 includes a receiving cavity 811 and a limiting groove 812. One end of the movable rod 82 enters the receiving cavity 811 through the limiting groove 812. The flange 83 is disposed in the receiving cavity 811 and fixed to one end of the movable rod 82. The pressure spring 84 is disposed in the receiving cavity 811, with one end abutting against the flange 83 and the other end abutting against the interior of the receiving cavity 811. The pressure spring 84 pushes the transverse dryer 7, and the transverse dryer 7 changes its transverse position according to the air permeability and the vacuum degree of the cardboard box 4, thereby correspondingly compressing the pressure spring 84.

[0022] Preferably, the end of the housing 81 away from the movable rod 82 is provided with a hinge hole 813, and an adjusting screw 85 is provided in the hinge hole 813. A movable block 86 is provided between the pressure spring 84 and the housing 81. A threaded hole 861 is provided on the movable block 86. One end of the adjusting screw 85 enters the threaded hole 861 to achieve threaded engagement. By rotating the adjusting screw 85, the feed amount of the movable block 86 can be adjusted, thereby adjusting the compression amount and pressure of the pressure spring 84, so as to facilitate the corresponding adjustment of the vacuum degree of the cardboard box 4.

[0023] Preferably, the movable block 86 has a receiving groove 862 at one end facing the movable rod 82, so that after the movable block 86 moves toward the movable rod 82, the transverse dry net 7 pushes the movable rod 82 toward the receiving groove 862, thus avoiding interference and restriction of movement.

[0024] Preferably, a limiting strip 42 is provided at the negative pressure port 41 to limit the maximum lateral movement range of the transverse dry net 7 and prevent the transverse dry net 7 from generating thrust on the low-permeability dry net 3. A fixing frame 71 is provided around the transverse dry net 7, and a slot 72 is provided on the fixing frame 71 corresponding to the limiting strip 42.

[0025] Preferably, the pressure component is an electric push rod, and a pressure detection sensor is fixedly installed on the inner wall of the paper stabilizing box 4. The pressure detection sensor is electrically connected to the electric push rod. The pressure detection sensor detects the vacuum level inside the paper stabilizing box 4, thereby adjusting the extension and retraction of the electric push rod, and thus adjusting the position of the transverse dry wire 7.

[0026] The main technical effects of this invention are as follows: A pressure component pushes the transverse moving wire towards a specific direction, followed by a negative pressure vacuum pump drawing a vacuum into the paper stabilizing cylinder of the paper stabilizing box. When the paper is thin, its permeability increases, causing the vacuum level inside the paper stabilizing box to decrease. The thrust on the transverse moving wire decreases after the negative pressure vacuum and external gas passes through the paper and the low-permeability wire. Driven by the pressure component, the transverse moving wire moves closer to the low-permeability wire, reducing permeability and increasing the vacuum level inside the paper stabilizing box, thus maintaining the paper's suction. Conversely, when the paper is thick, permeability decreases, and the transverse moving wire is pressured away from the low-permeability wire, increasing permeability. Furthermore, the low-permeability wire further reduces permeability, preventing the vacuum level inside the paper stabilizing box from becoming too low.

[0027] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A low permeability dry net paper stabilizing structure characterized by, The system includes symmetrically spaced drying cylinders, a paper stabilizing cylinder positioned below the drying cylinders, a low-permeability drying wire wrapped around the drying cylinders and the paper stabilizing cylinders, a paper stabilizing box positioned between the drying cylinders and the paper stabilizing cylinders, and a negative pressure vacuum pump connected to the paper stabilizing cylinders and the paper stabilizing box via a suction pipe. The paper stabilizing box has negative pressure ports on both sides facing the low-permeability drying wires, extending towards and abutting against the low-permeability drying wires. A transverse moving drying wire and a pressure assembly are disposed inside the paper stabilizing box. An array of pressure assemblies is arranged inside the paper stabilizing box and facing the low-permeability drying wires. The transverse moving drying wire is fixedly installed on the movable end of the pressure assembly, parallel to the low-permeability drying wire at the negative pressure port. The pressure assembly pushes the transverse moving drying wire towards the low-permeability drying wire.

2. A low permeability dry web stabilizing structure according to Claim 1 wherein, The pressure assembly is an elastic pressure assembly, which includes a housing, a movable rod, a flange, and a pressure spring. The housing includes a receiving cavity and a limiting groove. One end of the movable rod enters the receiving cavity through the limiting groove. The flange is disposed in the receiving cavity and fixed to one end of the movable rod. The pressure spring is disposed in the receiving cavity, with one end abutting against the flange and the other end abutting against the interior of the receiving cavity.

3. A low permeability dry net paper stabilizing structure as claimed in claim 2, wherein, A hinge hole is provided at one end of the housing away from the movable rod. An adjusting screw is provided in the hinge hole. A movable block is provided between the pressure spring and the housing. A threaded hole is provided on the movable block. One end of the adjusting screw enters the threaded hole to achieve threaded engagement.

4. A low permeability dry web stabilizing structure according to Claim 3, wherein, The movable block has a storage groove at one end facing the movable rod.

5. A low permeability dry web paper structure as defined in claim 1, wherein, A limiting strip is provided at the negative pressure port, and a fixing frame is provided around the transverse moving mesh. A slot is provided on the fixing frame corresponding to the limiting strip.

6. The low-permeability dry wire paper stabilizing structure as described in claim 1, characterized in that, The pressure component is an electric push rod, and a pressure detection sensor is fixedly installed on the inner wall of the paper box. The pressure detection sensor is electrically connected to the electric push rod.

7. The low-permeability dry wire paper stabilizing structure as described in claim 1, characterized in that, The air permeability of the transverse dry net is lower than or equal to the air permeability of the low-permeability dry net.

Images