CN218621561U

CN218621561U - High vacuum paper stabilizing device

Info

Publication number: CN218621561U
Application number: CN202123313106.1U
Authority: CN
Inventors: 韦渊
Original assignee: Jiangsu Bohui Paper Industry Co Ltd
Current assignee: Jiangsu Bohui Paper Industry Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2023-03-14
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a high vacuum paper stabilizing device, which comprises a stabilizing roller, a sealing blade, a paper stabilizer and a sealing plate; it is characterized in that a plurality of groups of high-pressure air blowing boxes are arranged in a pressure chamber arranged in the paper stabilizer; the sealing strip support is in a groove shape; and the sealing strip penetrates through the sealing strip bracket for installation. A trapezoidal closed space is formed by the stabilizing roll, the drying cylinder, the dry net, the wet paper web moving along with the dry net and the paper stabilizer. A high vacuum area is formed at the inlet of a dry net of the paper stabilizer, a vacuum area is formed between the dry net and the paper stabilizer, and the paper web is tightly adsorbed on the dry net under the action of negative pressure of the vacuum area, so that the paper web is more attached to the surface of a drying cylinder, the stability of the paper web guiding process and operation is improved, and the problems of wrinkles and paper breakage caused by speed difference fluctuation are reduced.

Description

High vacuum paper stabilizing device

Technical Field

The utility model relates to a papermaking equipment especially relates to a steady paper device of high vacuum.

Background

The paper making machine is a complete set of equipment which enables paper pulp to form partial linkage of paper webs, and comprises a head box, a net part, a pressing part, a drying part, a calender, a winder, a transmission part and other main machines and steam, water, vacuum, lubrication, heat recovery and other auxiliary systems. The pulp flowing box is also called as a front box of the net, and the pulp flowing box uniformly and stably sends pulp with proper concentration to the net through a pulp distributor, a rectifying device, a weir pool, a weir plate nozzle and other parts; after the pulp is sprayed from the head box onto the copper wire, a wet paper sheet is formed on the wire part and is dewatered; then pressing, namely, mechanically extruding the moisture of the wet paper sheet from the wire part to improve the dryness of the paper sheet, simultaneously improving the surface property of the paper sheet, eliminating wire marks and increasing the smoothness, tightness and strength; and then the wet paper enters a drying part to further dehydrate the squeezed wet paper so as to shrink the paper, tightly combine the fibers and increase the strength.

When the paper web moves along with a dry net and passes through the drying cylinders and the stabilizing rolls, the air bags are wrinkled, the traditional paper machine mainly solves the problem by utilizing the speed difference between the drying cylinders of the drying part, but the paper web can generate transverse shrinkage deformation and is easy to break. At present, paper machines run at high speed, and the effective production efficiency is influenced undoubtedly by the problem of paper breaking.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the invention aims to provide a high vacuum paper stabilizing device for improving the running stability of paper webs.

The technical scheme is as follows: the utility model relates to a high vacuum paper stabilizing device, which comprises a stabilizing roller, a sealing blade, a paper stabilizer and a sealing plate; it is characterized in that a plurality of groups of high-pressure air blowing boxes are arranged in a pressure chamber arranged in the paper stabilizer; the sealing strip support is in a groove shape; and the sealing strip penetrates through the sealing strip bracket for installation.

The device forms a trapezoidal closed space among the stabilizing roll, the drying cylinder, the dry net, the wet paper web moving along with the dry net and the paper stabilizer. The high-pressure blowing boxes blow out high-pressure air, a high vacuum area is formed at a dry net inlet of the paper stabilizer, a vacuum area is generated between the dry net and the paper stabilizer, and the paper web is tightly adsorbed on the dry net under the action of negative pressure of the vacuum area.

The four groups of high-pressure air blowing boxes are respectively arranged at the edges of the inlet, the outlet, the operation side and the transmission side of the dry net of the paper stabilizer; and a plurality of high-pressure air nozzles are arranged in the high-pressure air blowing box. The high-pressure air blown out by the multiple groups of high-pressure air blowing boxes generates a vacuum area between the drying net and the paper stabilizer, and the paper web is tightly adsorbed on the drying net under the action of negative pressure of the vacuum area. The utility model discloses the high pressure case of blowing is different from traditional steady paper ware nozzle, and the traditional steady paper ware nozzle is to propping up sealed scraper and drying the net through the production negative pressure of blowing and transporting cleanly, and the utility model discloses the high pressure case of blowing adopts the sealed of blowing, blows off high atmospheric pressure gas and drying the net and producing the vacuum area between the paper ware steadily, dries the net entry at steady paper ware and forms the high vacuum area, realizes adjustable vacuum and cuts off, dries the net deformation minimum in the high vacuum area, to drying the wearing and tearing minimizing of net.

A first sealing blade, which can peel the web moving with the wire from the surface of the drying cylinder, is mounted above the stabilizer. The sealing blade works on the principle that contact with the wire causes a vacuum to be created to quickly and stably peel the high speed paper web from the cylinder surface.

And a second sealing blade and a third sealing blade for sealing the paper stabilizer and the stabilizing roller are arranged at two ends of the fixed support. The sealing blade has excellent sealing performance and adjustability, and can seal the paper stabilizer and stabilize the roller gap in a sealing mode.

The sealing strip support is in a U-shaped clamping groove shape. The sealing strip support is in a U-shaped clamping groove shape and is installed above the paper stabilizer, and the sealing strip can penetrate through the middle of the clamping groove of the support to prevent falling.

The sealing strip is arranged below the transverse nozzle of the dry net inlet of the paper stabilizer. The sealing strip divides the areas among the dry net inlet, the dry net and the paper stabilizer of the paper stabilizer into: a high vacuum zone and a vacuum zone.

The installation distance between the paper stabilizer and the dry net is 12 +/-2 mm. The gap width between the paper stabilizer and the dry net is controlled by adjusting the position of the fixing frame. If the distance is too small, a positive pressure is created between the wire and the stabilizer causing the paper to flutter.

The sealing strip and the sealing plate are made of high-temperature resistant rubber materials. Because this steady paper device of high vacuum uses in the drying portion between each stoving jar, so sealing strip and closing plate need high temperature resistant rubber materials to make, increase life.

In the production process, a high vacuum area is formed at the inlet of the dry net of the paper stabilizer, and the high vacuum degree is more than 3Kpa. And the higher speed of the paper machine is matched, and the paper breaking probability is reduced.

During the production process, the paper stabilizer and the dry net form a vacuum area, and the vacuum degree is 1.2-1.5Kpa.

Has the beneficial effects that: compared with the prior art, the utility model, it is showing the advantage and is: 1. the paper web is tightly attached to the dry net, so that air bags are not generated, and the problem of wrinkles is reduced. 2. The paper breaking problem of the paper web is reduced, and the running stability of the paper web is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an installation schematic diagram of the present invention.

Fig. 3 is a schematic view of the pressure control process circuit of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

A steady paper device of high vacuum, set up between the individual dryer 2 of stoving portion, 2 diameters of dryer are 1.81m, paper machine speed of a motor vehicle 1000m/min. The high-vacuum paper stabilizing device comprises a stabilizing roller 6, wherein the diameter of the stabilizing roller 6 is 1.25m; sealing the blade; the paper stabilizer 3 is arranged above the stabilizing roller 6 through a fixed frame, and a certain gap is formed between the paper stabilizer 3 and the stabilizing roller; the fixing frame is fixed in the drying area of the paper machine by using bolts; sealing plates 8 respectively mounted on the end surfaces of both sides of the paper stabilizer 3; a plurality of groups of high-pressure air blowing boxes arranged in the stabilizing box; the sealing strip support 1 is arranged above the paper stabilizer 3, and the sealing strip support 1 is in a U-shaped groove shape and is arranged above the paper stabilizer 3; the sealing strip 5 penetrates through the middle of the bracket clamping groove and is arranged below a transverse nozzle at the entrance of a dry net of the sealing strip paper stabilizer 3, and the sealing strip 5 divides the area among the entrance of the dry net of the paper stabilizer, the dry net and the paper stabilizer 3 into: a high vacuum zone and a vacuum zone.

The sealing tape 5 has a length of 8470mm, a width of 40mm and a thickness of 2 to 2.5mm, and is preferably made of a high-temperature (120 + -20 deg.C) resistant rubber material because it functions to prevent the paper surface from being undulated by being closely adhered to the surface of the drying wire.

The device forms a trapezoidal closed space among the stabilizing roll 6, the drying cylinder 2, the dry net, the wet paper web moving along with the dry net and the paper stabilizer. The high-pressure air blown out by the multiple groups of high-pressure air blowing boxes forms a high vacuum area at the dry net inlet of the paper stabilizer, a vacuum area is generated between the dry net and the paper stabilizer 3, and the paper web is tightly adsorbed on the dry net under the action of the negative pressure of the vacuum area.

Four groups of high-pressure air blowing boxes are respectively arranged at the edges of the inlet, the outlet, the operation side and the transmission side of the dry net of the paper stabilizer 3; and a plurality of high-pressure air nozzles, preferably 3 high-pressure air nozzles, are arranged in the high-pressure air blowing box. When the flow of the high-speed airflow ejected by the high-speed nozzle is insufficient, the generated vacuum is insufficient, and paper folds are easily caused; on the contrary, when the air flow is too large, the fluttering of the paper web is caused to cause paper leading difficulty. From the effect of the air flow on the web and stabilizer vacuum, the value of the high speed air flow can be determined, the air flow being 1250m ³ /h/m ² . The high-pressure air blown out by the high-pressure air blowing box generates a vacuum area between the dry net and the paper stabilizer, and the paper web is tightly adsorbed on the dry net under the action of negative pressure of the vacuum area. The utility model discloses the high pressure case of blowing is different from traditional steady paper ware nozzle, and the traditional steady paper ware nozzle is supported sealed scraper and will be peeled off from the dryer surface along with the paper web that net motion is dried through blowing to produce the negative pressure, and the utility model discloses the high pressure case of blowing adopts the sealed formula of blowing, blows off high atmospheric pressure gas and dry the net and produce the vacuum area between the ware with steady paper, dry the net entry at steady paper ware and form the high vacuum area, realizes adjustable vacuum and cuts off, dry the net deformation minimum in the high vacuum area, to the wearing and tearing minimizing that dry the net.

A first sealing blade, which can peel the web moving with the wire from the surface of the drying cylinder, is mounted above the stabilizer. The sealing blade works on the principle that contact with the wire causes a vacuum to be created to quickly and stably peel the high speed paper web from the cylinder surface. And a second blade and a third blade of the sealing paper stabilizer and the stabilizing roller are arranged at two ends of the fixed support. The sealing blade has excellent sealing performance and adjustability, and can seal the paper stabilizer and stabilize the roller gap in a sealing mode. The sealing blade is fixed on the fixing frame and is inserted into the fixing frame, so that the sealing blade is convenient for an operator to replace.

The utility model discloses a guarantee steady paper ware normal operating performance and realize the maximize, need pay special attention to when installing steady paper ware and dry the installation distance of net, preferred steady paper ware is 12 ± 2mm with the installation distance who dries the net, and the distance is too little can form the malleation between drying the net and steady paper ware and arouse that the paper waves, and the distance is too big occupation machine space. The gap width between the paper stabilizer and the dry net is controlled by adjusting the position of the fixing frame. If the distance is too small, a positive pressure is created between the wire and the stabilizer causing the paper to flutter.

The seal plate is 5mm thick, and length, width are 600 x 80mm respectively, and the closing plate setting forms the end face seal at steady paper ware both sides terminal surface. The sealing plate material also selects high-temperature-resistant rubber material, the main body of the paper stabilizer is formed by processing high-strength aluminum alloy or hot-dip galvanized sheet material, the strength is high, the welding performance is excellent, and the paper stabilizer can adapt to the installation environment of the baking area.

In the production process, a high vacuum area is formed at the inlet of the dry net of the paper stabilizer, and the high vacuum degree is more than 3Kpa. And the higher paper machine speed is matched, and the paper breaking probability is reduced.

Claims

1. A high vacuum paper stabilizing device comprises a stabilizing roller (6), a sealing blade (4), a paper stabilizer (3) and a sealing plate (8); it is characterized in that a plurality of groups of high-pressure blow boxes are arranged in a pressure chamber arranged in the paper stabilizer (3); the riveted sealing strip support (1) is arranged above the paper stabilizer and is in a groove shape; and the sealing strip (5) penetrates through the sealing strip bracket (1) to be installed.

2. The high-vacuum paper stabilizing device according to claim 1, wherein the high-pressure blow boxes are four groups, and are respectively arranged at the edges of the inlet, the outlet, the operation side and the transmission side of the dry net of the paper stabilizer; and a plurality of high-pressure air nozzles are arranged in the high-pressure air blowing box.

3. A high vacuum paper stabilizing apparatus according to claim 1, wherein a first sealing blade is mounted above the paper stabilizer to peel the web moving with the wire from the surface of the drying cylinder.

4. The high vacuum paper stabilizing apparatus according to claim 1, wherein a second sealing blade and a third sealing blade for sealing the paper stabilizer and the stabilizing roller are provided at both ends of the fixing bracket.

5. The high-vacuum paper stabilizing device according to claim 1, wherein the sealing strip holder is in the shape of a U-shaped slot.

6. The high vacuum paper stabilizing apparatus according to claim 1, wherein the sealing strip is disposed below the transverse nozzle of the entrance of the dryer fabric of the paper stabilizer.

7. The high vacuum paper stabilizing apparatus according to claim 1, wherein the paper stabilizer is installed at a distance of 12 ± 2mm from the dry wire.

8. The high vacuum paper stabilizer according to claim 1, wherein the sealing strip and the sealing plate are made of high temperature resistant rubber material.

9. The high vacuum paper stabilizing device according to claim 1, wherein the entrance of the dry net of the paper stabilizer forms a high vacuum area in the production process, and the high vacuum degree is more than 3Kpa.

10. The high vacuum paper stabilizing device according to claim 1, wherein during production, the paper stabilizer and the dry wire form a vacuum area with a vacuum degree of 1.2-1.5Kpa.