阅读说明：本技术 一种压区在上方的靴辊 (Shoe roll with a nip above ) 是由 姜博恩 刘铸红 祝红军 李长国 盛海鹏 赵建峰 李荣君 张卫军 原小新 郭卫民 于 2020-05-29 设计创作，主要内容包括：一种压区在上方的靴辊,包括靴辊梁、套接在靴辊梁外面的靴套以及连接在靴套两端的靴套夹持装置,还包括安装在靴辊梁顶部的靴板、驱动靴板的加载液压缸、安装在靴辊梁侧面的接油盒、沿纸页行进方向安装在靴辊梁上的位于靴板前面的喷油管以及位于靴板后面的刮刀,接油盒连接有大回油管,加载液压缸的输出轴竖直向上且输出轴顶端设置靴板,靴辊梁的中部安装有用于提供液压油、润滑油、压缩空气、温度检测和压力检测的管道装置。本发明提供一种压区在上方的靴辊,适用于正压处,其压区在靴辊上方,压榨效率高。(The utility model provides a shoe roller of nip above, including the shoe roller roof beam, cup joint the shoe cover and the shoe cover clamping device of connecting at the shoe cover both ends outside the shoe roller roof beam, still include the boot board of installing at shoe roller roof beam top, the loading pneumatic cylinder of drive boot board, install the oil receiving box in the side of shoe roller roof beam, install the oil spout pipe that is located the front of the shoe board and the scraper that is located the shoe board back on the shoe roller roof beam along the page advancing direction, the oil receiving box is connected with big oil pipe that returns, the output shaft of loading pneumatic cylinder is vertical upwards and the output shaft top sets up the shoe board, the mid-mounting of shoe roller roof beam is used for providing hydraulic oil, lubricating oil, compressed air, temperature detect and pressure detection's. The invention provides a shoe roll with a nip above, which is suitable for positive pressure, and the nip is above the shoe roll, so that the pressing efficiency is high.)

1. A shoe roller with a press area above comprises a shoe roller beam, a shoe sleeve sleeved outside the shoe roller beam and a shoe sleeve clamping device connected to two ends of the shoe sleeve, and is characterized in that: the automatic oil collecting device is characterized by further comprising a boot plate arranged at the top of the boot roller beam, a loading hydraulic cylinder for driving the boot plate, an oil collecting box arranged on the side face of the boot roller beam, an oil spraying pipe arranged in front of the boot plate and a scraper arranged behind the boot plate, wherein the oil spraying pipe is arranged on the boot roller beam in the paper advancing direction, the oil collecting box is connected with a large oil return pipe, the boot plate is arranged vertically upwards on an output shaft of the loading hydraulic cylinder and at the top end of the output shaft, and a pipeline device used for providing hydraulic oil, lubricating oil, compressed air, temperature detection and pressure detection.

2. A nip-up shoe roll according to claim 1 wherein: an oil pool is arranged on the working surface of the boot plate.

3. A nip-up shoe roll according to claim 2, characterized in that: the pipeline device comprises an oil inlet pipe, a hydraulic oil pipeline, a lubricating oil pipeline, a compressed air pipeline and a temperature and humidity detection pipeline, wherein the oil inlet pipe is communicated with an oil pool, the hydraulic oil pipeline is communicated with the loading hydraulic cylinder, and the lubricating oil pipeline is communicated with an oil injection pipe.

4. A nip-up shoe roll according to claim 1 wherein: and a middle oil return device is also installed at the bottom of the shoe roller beam.

5. A nip-up shoe roll according to claim 1 wherein: and the two side surfaces of the shoe roller beam are respectively provided with an oil receiving box, one oil receiving box is arranged on the side surface of the shoe roller beam corresponding to the lower part of the scraper, and the other oil receiving box is arranged on the side surface of the shoe roller beam corresponding to the lower part of the oil spraying pipe.

Technical Field

The invention relates to the field of papermaking machinery, in particular to a shoe roll with a nip above, belonging to a shoe-shaped wide-nip press.

Background

The shoe extended nip press is the most efficient press type recognized in the paper industry today. Because of the wide nip, high line pressure, and long press times, the resulting pressed sheet has high dryness. A conventional shoe press, whether arranged as a straight press or a compound press, typically has a nip below a shoe roll (shown in fig. 1 as a shoe roll), i.e., the shoe roll is arranged above a mating roll (also called a backing roll). The greatest advantages of such an arrangement are: the shoe plate is surrounded by the lubricating oil, the cooling effect is better, in addition, the collection of the return oil is more convenient, but the shoe roller with the structure is not suitable for being used at positive pressure. In the positive pressure structure, the counter roller needs to be arranged above the sheet, and the shoe roller needs to be arranged below. In a conventional paper machine, if a press section requires positive pressure, a conventional roll press is generally used, and the conventional roll press is much less efficient than the shoe press.

Disclosure of Invention

The object of the invention is to provide a specially constructed nip-up shoe roll which can be adapted to a press with a counter roll or backing roll on top and a shoe roll on bottom. The technical scheme of the invention is as follows:

the utility model provides a shoe roller of nip above, including the shoe roller roof beam, cup joint the shoe cover and the shoe cover clamping device of connecting at the shoe cover both ends outside the shoe roller roof beam, still include the boot board of installing at shoe roller roof beam top, the loading pneumatic cylinder of drive boot board, install the oil receiving box in the side of shoe roller roof beam, install the oil spout pipe that is located the front of the shoe board and the scraper that is located the shoe board back on the shoe roller roof beam along the page advancing direction, the oil receiving box is connected with big oil pipe that returns, the output shaft of loading pneumatic cylinder is vertical upwards and the output shaft top sets up the shoe board, the mid-mounting of shoe roller roof beam is used for providing hydraulic oil, lubricating oil, compressed air, temperature detect and pressure detection's.

An oil pool is arranged on the working surface of the boot plate.

The pipeline device comprises an oil inlet pipe, a hydraulic oil pipeline, a lubricating oil pipeline, a compressed air pipeline and a temperature and humidity detection pipeline, wherein the oil inlet pipe is communicated with an oil pool, the hydraulic oil pipeline is communicated with the loading hydraulic cylinder, and the lubricating oil pipeline is communicated with an oil injection pipe.

And a middle oil return device is also installed at the bottom of the shoe roller beam.

And the two side surfaces of the shoe roller beam are respectively provided with an oil receiving box, one oil receiving box is arranged on the side surface of the shoe roller beam corresponding to the lower part of the scraper, and the other oil receiving box is arranged on the side surface of the shoe roller beam corresponding to the lower part of the oil spraying pipe.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a shoe roll with a nip above, which is suitable for positive pressure, and the nip is above the shoe roll, so that the pressing efficiency is high.

Drawings

FIG. 1 is a schematic view of a conventional nip-down shoe roll configuration;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a cross-sectional view a-a of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, in the present invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, are only used for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have this particular orientation, be configured to operate in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise specified, a plurality means two or more.

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

As shown in fig. 2-3, a shoe roll with a nip above comprises a shoe roll beam 1, a shoe cover 4 sleeved outside the shoe roll beam 1, a shoe cover clamping device 5 connected to two ends of the shoe cover 4, a shoe plate 3 mounted on the top of the shoe roll beam 1, a loading hydraulic cylinder 2 driving the shoe plate 3, an oil receiving box 8 mounted on the side surface of the shoe roll beam 1, an oil spraying pipe 7 mounted on the shoe roll beam 1 along the paper sheet advancing direction and located in front of the shoe plate 3, and a scraper 6 located behind the shoe plate 3, wherein the oil receiving box 8 is connected with a large oil return pipe 9, the oil receiving box 8 is communicated with the large oil return pipe 9, the output shaft of the loading hydraulic cylinder 2 is vertically upward, the output shaft of the loading hydraulic cylinder 2 is fixedly connected with the shoe plate, and a pipeline device 11 for providing hydraulic oil, lubricating oil, compressed air, temperature detection and pressure detection is mounted in the middle of the shoe roll beam

The working surface of the shoe plate 3 is provided with an oil pool 15.

The pipeline device 11 comprises an oil inlet pipe 14, a hydraulic oil pipeline, a lubricating oil changing pipeline, a compressed air pipeline and a temperature and humidity detection pipeline, wherein the oil inlet pipe 14 is communicated with an oil pool 15, high-pressure oil can enter the oil pool 15 through the oil inlet pipe 14 to lubricate the shoe plate 3 and the shoe sleeve 4, the hydraulic oil pipeline is communicated with the loading hydraulic cylinder 2 to provide power for the loading hydraulic cylinder 2, the lubricating oil pipeline is communicated with an oil injection pipe 7 to spray lubricating oil into a clamping area of the shoe plate 3 and the shoe sleeve 4.

The bottom of the shoe roll beam 1 is also provided with a middle oil return device 10.

The two side surfaces of the shoe roller beam 1 are respectively provided with an oil receiving box 8, one oil receiving box is arranged on the side surface of the shoe roller beam corresponding to the lower part of the scraper 6, the other oil receiving box is arranged on the side surface of the shoe roller beam corresponding to the lower part of the oil spraying pipe 7, lubricating oil scraped by the scraper 6 and lubricating oil sprayed and scattered by the oil spraying pipe 7 are respectively collected, and then the oil is discharged out of the shoe roller through a middle large oil return pipe 9.

A counter roll (also called backing roll) 13 is located above the shoe roll.

The loading hydraulic cylinder 2, the shoe plate 3, the scraper 6, the oil spraying pipe 7, the oil receiving box 8, the large oil return pipe 9, the middle oil return device 10 and the pipeline device 11 are all arranged on the shoe roller beam 1. The boot sleeve 4 is sleeved outside the boot roller beam 1, a closed space is formed by the boot sleeve clamping device 5, and the loading hydraulic cylinder 2, the boot plate 3, the scraper 6, the oil spraying pipe 7, the oil receiving box 8, the large oil return pipe 9, the middle oil return device 10 and the pipeline device 11 are all surrounded inside.

The loading cylinder 2 can push up the shoe board 3, push it toward the back roller 13, and pressurize the shoe board 3. The shoe plate working surface pushes the shoe cover 4, and great linear pressure is generated between the shoe cover 4 and the back roll 13 roll surface, so that the paper sheet 12 between the shoe cover 4 and the back roll is squeezed and dewatered.

The oil spray pipe 7 is installed in front of the shoe plate 3, i.e., an inlet side of the nip when the shoe cover 4 rotates, so as to spray oil into the nip of the shoe plate 3 and the shoe cover 4.

The working surface of the shoe plate 3 is provided with an oil pool 15, and high-pressure oil can enter the oil pool 15 through an oil inlet pipe 14 to lubricate the shoe plate 3 and the shoe sleeve 4.

A scraper 6 is installed behind the shoe plate 3, i.e., at the outlet side of the rotary nip of the shoe cover 4, to scrape off the lubricating oil carried on the shoe cover 4.

And oil receiving boxes 8 are arranged on two side surfaces of the shoe roller beam 1, and are used for collecting lubricating oil scraped by the scraper 6 and lubricating oil sprayed by the oil spraying pipe 7 respectively and discharging the oil out of the shoe roller through a middle large oil return pipe 9.

In the middle of the shoe roll beam 1, the bottom of the shoe roll beam is provided with a middle oil return device 10. The oil return device consists of a cylinder, an oil collection pipe, a hose, a small oil return pipe and the like. The middle oil return device 10 can collect the lubricating oil which is not collected by the oil receiving box 8 and falls to the bottom of the shoe roller beam, and the lubricating oil is discharged out of the shoe roller.

The pipe arrangement 11 installed in the middle of the shoe roll beam 1 is mainly used for supplying hydraulic oil, lubricating oil, compressed air and temperature and pressure sensing.

The upper shoe roll of the press area of the invention is characterized in that when the press area runs, the loading hydraulic cylinder 2 is filled with oil to load the shoe plate 3, jack up the shoe plate 3, push the shoe plate to the back roll 13 and pressurize the shoe plate 3. So that a great linear pressure is generated between the working surface of the shoe plate 3 and the roll surface of the backing roll 13 to press-dewater the sheet between the shoe cover 4 and the backing roll 13. In order to reduce friction between the shoe 4 and the shoe plate 3, the oil jet pipe 7 in front of the shoe plate jets lubricating oil into the nip of the shoe plate 3 and the shoe 4. In addition, high-pressure oil enters an oil pool 15 on the working surface of the shoe plate 3 through an oil inlet pipe 14 to further lubricate the shoe sleeve 4. After passing through the shoe plate 3, the lubricating oil carried on the shoe cover 4 is scraped off by the scraper 6, collected in the oil receiver 8, and then discharged out of the shoe roll through the large oil return pipe 9 in the middle. The lubricating oil which does not collect in the oil receiver box 8 and falls to the bottom of the shoe roll beam can be collected by the middle oil return device 10 and then discharged to the outside of the shoe roll.

The invention provides a shoe roll with a nip above, which is suitable for positive pressure, and the nip is above the shoe roll, so that the pressing efficiency is high.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.