JPH0473290A - Finishing and processing device in papermaking machine - Google Patents

Abstract

PURPOSE:To simply carry out cleaning of dust clogging and inspection by pivoting a vacuum chamber on a main body of steam foil by a pivoting part and connecting and disconnecting the vacuum chamber from the main body of steam foil by fastening mechanism. CONSTITUTION:A vacuum chamber 6 is rotatably pivoted on a main body 8 of steam foil by a pivoting part 7 and fastening mechanism 9 capable of connecting and disconnecting the vacuum chamber from the main body of steam foil is installed. In the case of causing dust clogging by sucking foreign matters such as paper piece from a suction port, a nut 92 of a helical shaft 91 is loosened and the fastening mechanism 9 is removed or the vacuum chamber is rotated around the pivoting part as a support in a loosened state of the nut 92, a gap between the vacuum chamber of the main body of steam foil is widened to carry out cleaning and inspection.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is used in paper machines, coating machines, processing machines, etc. to improve the gloss and smoothness of paper, or to promote the dehydration effect, in order to improve the quality of paper. It also relates to steam foil as a finishing machine used to control moisture and prevent curling.

[Conventional technology]

Traditionally, paper finishing machines spray steam directly onto the paper, that is, flow the steam parallel to and in the opposite direction to the flow of the paper to not only heat the paper, but also provide a humidifying effect to give the final finish to the paper. Therefore, it is known to install a steam foil that also serves as a preheater.

As shown in Fig. 7, this steam foil has preheating chambers a and b on the plane side of the paper and on the steam blowing side with a gap above the running paper, and a steam blowing nozzle C and a flu air blowing nozzle. A unit equipped with a steam foil e equipped with a pulp drive actuator d for supplying air to the steam foil is used, but depending on the machine to which this steam foil is installed and the surrounding airflow conditions, it can be installed on either the paper inlet side or the paper outlet side. Since steam may leak and condense and fall onto the paper, attempts have been made to attach vacuum chambers f for mist suction to both sides of the main body.

[Problem to be solved by the invention]

However, in conventional steam foils with a vacuum chamber attached to the main body, the vacuum chamber is fixed with a suction port placed on the paper inlet side and the paper outlet side with a slight gap from the main body. Dust, foreign matter, curled or torn paper is also sucked up, which tends to cause dust clogging, and the vacuum chamber must be removed to clean and repair the dust, which is also time-consuming. This is complicated and requires the operation of the papermaking machine to be stopped during the cleaning process, which poses problems such as a significant drop in productivity when the cleaning process is frequent.

The present invention aims to eliminate these conventional drawbacks, and allows for quick cleaning and inspection of dirt jams with simple operations, and allows for stable work as adjustments can be made even during operation without stopping the paper machine. The aim is to provide a highly reliable finishing machine that can guarantee paper quality, improve paper quality, and significantly reduce production costs.

[Means to solve the problem]

The present invention includes a preheating chamber 1 having a heating surface disposed close to the running paper along the width direction of the paper, and a preheating chamber 3 on the steam blowing side of a steam blowing nozzle, and the steam blowing nozzle 2 is connected to In a steam foil unit comprising a steam hender 5 connected by an air supply line 4 containing conditioned pulp and a vacuum chamber 6.6 on the inlet side and on the outlet side of the running paper, the vacuum chamber 6 is connected to a pivoting support 7. The vacuum chamber 6 is rotatably connected to the steam foil main body 8 so that the vacuum chamber 6 can be separated from the steam foil main body, and the vacuum chamber 6
This is a finishing device for a paper making machine characterized by being equipped with a fastening mechanism 9 that can attach and detach between the steam foil body 8 and the steam foil body 8.

[Function] The finishing machine of the present invention blows out teal into the gap between the preheating chamber 1 of the steam foil main body and the moving paper surface, to explain with an example installed in the wet section of a paper machine.
That is, steam is ejected from the steam blowing nozzle 2 parallel to and opposite to the paper moving direction to efficiently heat and humidify the paper, and the steam leaking to the paper inlet and paper outlet sides is removed by the vacuum chamber 6. Even if the paper and running conditions change, there is no fear of condensed water falling or condensed condensate blowing out, so it can be used safely.

In addition, if foreign objects such as pieces of paper are sucked in from the suction port and cause a dirt blockage, the screw shafts 9 on both sides of the steam foil main body 8. Naft 9. After loosening and removing the fastening mechanism 9, or the nut 9 of the screw shaft 9! While maintaining the loosened state, the vacuum chamber 6 is rotated by the drive unit 11 or by hand using the pivot 7 as a fulcrum, and the gap between the main body and the main body is widened and separated, making it easy and quick to remove clogged foreign objects. After the foreign matter is removed or inspected or repaired, the vacuum chamber 6 is returned to its original position and the tightening mechanism 9 is tightened to fix the suction port for efficient use.

In this case, when the driving force cannot be used due to a failure or maintenance of the drive unit 11, the tightening mechanism 9 is used as a bank up, and when the steam foil device is long and a large force is required to operate the vacuum chamber 6, , is effectively used when operations are performed from a remote location, but in the case of short steam foils or test machines, the drive unit 1
1 may be omitted and only the tightening mechanism 9 may be operated manually.

〔Example〕

Embodiments of the present invention will be described with reference to FIGS. 1 to 6. A preheating chamber l with a heating surface II, a steam blowing nozzle 2, and a steam blowing nozzle 2 are arranged close to each other along the paper width direction on a running paper P. A preheating chamber 3 is provided on the steam blowing side of 2, and the steam header 5 communicates the steam blowing nozzle 2 with an air supply system path 4 containing steam amount adjusting pulp 14, and the inlet side and outlet side of the running paper P. and a vacuum chamber 6.6 to form a steam foil main body 8, the vacuum chamber harrow is rotatably pivoted to the steam foil main body 8 with a pivot portion 7, and the vacuum chamber 6 is separated from the steam foil main body 8. This is a finishing device for a paper making machine, and is equipped with a fastening mechanism 9 that can attach and detach the vacuum chamber halo and the steam foil main body 8.

In this case, the vacuum chamber 6 is connected by piping to a suction source (not shown) including a vacuum pump, and a seal apron 10 that contacts the steam foil body 8 is interposed between the vacuum chamber 6 and the steam foil body 8, and the vacuum chamber 6 is provided with a drive unit 11 that can be pressed tightly against the steam foil main body 8 and can be remotely controlled by an air cylinder or a hydraulic cylinder, and the gap between the paper and the steam foil is automatically stabilized by steam circulation and suction. It is used as a standard.

Further, as the fastening mechanism 9, a screw shaft 9. and the spiral shaft 9.
It consists of a nut 9□ that is screwed into the screw shaft 9, and is connected and assembled to a fixed bracket 13 that has a guide groove 12 into which the screw shaft 9 is inserted. It is also possible to have a tightening structure composed of a combination of.

Note that the vacuum chamber 6 is preferably provided with a heating chamber 61 that covers the suction port to prevent condensation on peripheral equipment, and it is also advisable to provide a drain outlet (not shown) if necessary. In addition, it is preferable that the vacuum chamber 6 be opened and closed by a manual handle or an interlocking mechanism using a motor or cylinder.

In the figure, reference numeral 15 denotes a calendar, which is made up of a large number of rolls 16 groups. 17 is a frame, 18 is an adjustment connection mechanism, and 19 is a heat insulating material.

Note that it can be effectively used anywhere from the wet end of the paper machine to the dry end of the processing machine.
Other papermaking dryers, coaters, other coatings,
The finishing machine of the present invention can be effectively used to improve the gloss, smoothness, and curl prevention of paper in the dry end, wafer, or toe end of a processing machine.

〔Effect of the invention〕

The present invention provides a preheating chamber with a heating surface disposed close to the running paper along the paper width direction, and a preheating chamber on the steam blowing side of a steam blowing nozzle, and the steam blowing nozzle is connected to a steam amount adjusting pulp. In a steam foil unit equipped with a steam header communicating with an air supply system including a vacuum chamber on the inlet side and the outlet side of the running paper,
The vacuum chamber is rotatably connected to the steam foil main body by a pivot portion so that the vacuum chamber can be separated from the steam foil main body, and the vacuum chamber and the steam foil main body are removably fastened together. Equipped with a mechanism, even if the gap in the vacuum chamber gets clogged with paper, dirt, or other foreign matter, it is possible to quickly clean and inspect the blockage with simple operations, even stopping the paper making machine. It is a highly reliable finishing machine that can be adjusted even during operation, guarantees stable work, improves paper quality, and significantly reduces production costs, and greatly reduces adjustment and handling work. It can be simplified, and maintenance and security can be easily performed.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 2 is a partial side view, Fig. 3 is an enlarged front view of the main part, and Fig. 4 is a third
Figure 1-1 is a side view, Figure 5 is a perspective view, Figure 6 is a perspective view of the
The figure is a side view of the double-use state, and FIG. 7 is a partially cutaway perspective view of a conventional example. 1.3... Preheating chamber, 2... Steam blowing nozzle, 4...
... Air supply system path, 5... Steam header, 6... Vacuum chamber, 7... Pivotal part, 8... Steam foil body, 9°° tightening mechanism, 10... Seal apron , 11... Drive unit, 3... Fixed bracket. Patent applicant Kinume Iron Works Co., Ltd.

Claims (4)

[Claims] (1) A preheating chamber with a heating surface arranged close to the running paper along the paper width direction and a preheating chamber on the steam blowing side of the steam blowing nozzle are provided, and the steam blowing nozzle includes a steam amount adjusting pulp. In a steam foil unit equipped with a steam header communicating with an air supply line and vacuum chambers on the inlet side and the outlet side of the running paper, the vacuum chamber is rotatably attached to the steam foil body with a pivot. 1. A finishing device for a paper making machine, characterized in that the vacuum chamber is configured to be able to be separated from the steam foil body, and is equipped with a fastening mechanism that can attach and detach the vacuum chamber and the steam foil body. (2) The steam foil according to claim 1, wherein the vacuum chamber includes a seal apron that contacts the steam foil body and is interposed between the vacuum chamber and the steam foil body. (3) The steam foil according to claim 1 or 2, wherein the vacuum chamber includes a drive unit that can be pressed against the steam foil main body. (4) The fastening mechanism includes a screw shaft and a nut screwed onto the screw shaft, and is connected to a fixed bracket having a guide groove into which the screw shaft is inserted. steam foil.