JP2001271285A - Foil blade for papermaking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a foil blade for a papermaking apparatus scarcely abrasive and easy in its fixing work. SOLUTION: Individual or mixed particles of diamond, CBN or the like are electrodeposited on the sliding surface of a main foil blade 10 made of an ABS resin or the like to form an electrodeposited layer 11 having improved durability. The electrodeposited layer 11 is fixed to a papermaking apparatus by encasing a titanium-made sash 12 without using a liner to improve the workability of the fixing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a paper making apparatus,
In particular, that foil blade.

[0002]

2. Description of the Related Art FIG. 7 is an explanatory view of a paper making process, which is well known, and will be briefly described. In FIG. 7, reference numeral 71 denotes a top wire, and 72 denotes an underwire. Belt conveyor. 7
Reference numeral 3 denotes a main foil blade group, in which a large number of main foil blades made of FRP and ceramic are arranged in parallel, and the length of the main foil blade is about 3 to 9 meters long, and is vertically symmetrical. Similar things are arranged. In the upper group of the main foil blade group 73, the main foil blades are arranged in an arc shape as shown, and in the lower group, the main foil blades are arranged in a straight line as shown. 75 is a top wire foil blade arranged in front of the main foil blade group 73 and on the lower surface of the top wire 71; 76 is in front of the main foil blade group 73 and an underwire 72
Underwire foil blade 77
Is the top wire 7 after the main foil blade group 73
5. Suction foil blades arranged on the lower surfaces of the underwires 76, respectively. The pulp stock solution is jetted from the nozzle 74 onto the underwire 72 having such a configuration,
Moving to the right in the drawing, the moisture contained in the paper is scraped off by the foil blade while passing through each foil blade.

FIG. 8 is an enlarged cross-sectional view of a portion where a main foil blade is attached to a paper making device. Reference numeral 1 denotes a main foil blade, and 2 denotes a mounting portion on the paper making device side. After inserting the mounting portion 1a of the foil blade 1, the liner 3
Is inserted into the gap and tightened with the screw 4 to fix it.

[0004]

In the foil blade of such a conventional paper making apparatus, since the surface of the blade is made of ceramic, it is broken by external force, and its durability is limited by chipping or abrasion. Ingenuity is required.

[0005] Further, since the length is about 3 to 9 meters, the weight becomes considerable, and replacement work and the like are difficult. Therefore, an early solution has been expected.

Also, since it is necessary to sandwich the liner,
The replacement operation was complicated. An object of the present invention is to reduce the weight of the foil blade of such a paper making apparatus, prevent the sliding surface thereof from being worn, improve the durability, and simplify the work by eliminating pinching of the liner in the mounting work. And

[0007]

According to the present invention, the above object can be attained by forming the main foil blade from a synthetic resin or carbon.

Further, in the preceding paragraph, including the blade surface and the rising surfaces following the blade surface on both sides thereof,
The problem can be solved by providing an electrodeposition layer on which particles such as diamond, CBN and other carbides and nitrides are electrodeposited.

[0009] In addition, in the above-mentioned items and the preceding items, the problem is solved by fitting and attaching a main foil blade having a titanium sash attached to a portion to be attached to a papermaking device.

In the above-mentioned aspect, the problem can be solved by dividing the main foil blade into a plurality of pieces in the longitudinal direction and connecting these via a sash.

In addition, the joint at an adjacent portion of the divided main foil blade is solved by forming an oblique angle.

Further, according to the present invention, the above problems can be solved by forming the material of the top wire foil blade, the underwire foil blade, and the suction foil blade from synthetic resin or carbon.

Further, in the preceding paragraph, including the blade surface and the rising surfaces following the blade surface on both sides thereof,
The problem can be solved by providing an electrodeposition layer on which particles such as diamond, CBN and other carbides and nitrides are electrodeposited.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a foil blade is formed of a synthetic resin, carbon or the like instead of a conventional product. And on the blade surface and the subsequent rising surfaces on both sides, diamond, CBN and other carbides,
The abrasion resistance is increased by electrodepositing particles such as nitrides by an electrodeposition method, and a foil blade with improved durability is obtained. When the foil blade is used for each of the main, top wire, underwire, and suction foil blades used in the papermaking apparatus, a remarkable effect can be obtained.

As for the particle size, for example, in the case of diamond, a commercially available mesh having a size of 100 to 10,000 can be used, and in the case of other materials, the same size can be used. .

The blade surface is plated with resin, and diamond and other particles are electrodeposited thereon. Electrodeposited particles are
One type may be selected from diamond, CBN and other carbides, nitrides, and the like, or a mixture of two or more types may be used.

A titanium sash is fitted into the main foil blade mounting portion with the paper making device, eliminating the need for a conventional liner. Since the sash is made of titanium, it is lightweight, easy to handle, and has corrosion resistance and strength. It is also excellent in workability because it is only fitted and screwed in the longitudinal direction.

If the main foil blade is divided into a plurality of parts in the longitudinal direction, and these are connected via a sash, it is easy to handle and workability is improved. In addition, if the seam at an adjacent portion of the divided foil blade is formed at an oblique angle, the strength is improved.

[0019]

FIG. 1 shows an embodiment of the present invention. Reference numeral 10 denotes a main foil blade, which is made of ABS resin in this embodiment. Although the shape itself is not different from the conventional one, the weight can be remarkably reduced as compared with the conventional one.

Reference numeral 11 denotes an electrodeposition layer provided on the blade surface of the main foil blade 10. Details will be described later.

Reference numeral 12 denotes a sash. It is formed of a titanium material. FIG. 2 shows a perspective view of the sash 12. Sash 12
Is formed in a shape that can be fitted along the outer shape of the mounting portion 10a of the main foil blade 10, and is fitted in the longitudinal direction.

FIGS. 3 and 4 are sectional views of the main foil blade. In FIG. 3, the blade surface is straight,
The one in FIG. 4 is curved. It is known that such two types of main foil blades are alternately provided in a papermaking apparatus. In both figures, 10 is a main foil blade, and 11 is an electrodeposition surface.

As the particles used for the electrodeposition, commercially available particles having a particle size of 100 to 10,000 can be used.

By treating the blade surface of the main foil blade of the paper making apparatus as described above, an electrodeposition layer is formed on the surface, and the sliding surface can have excellent wear resistance.

The materials of the above particles may be used alone or in combination of two or more. As for the mesh of the particles of the material other than the diamond grains, those having a mesh of 100 to 10,000 can be used similarly to diamond.

FIG. 6 shows the main foil blade 1 of the present invention.
FIG. 9 is a view in which 0 is attached to a paper making apparatus, and corresponds to FIG. 8 which is a conventional structure. Reference numeral 2 denotes a mounting portion on the side of the paper making apparatus, into which a mounting portion 10a of the main foil blade 10 in which the sash 12 is inserted is fitted and mounted. As described above, the sash 12 made of titanium is lightweight, and is easy to install since it is only fitted. Further, when the main foil blade 10 with the sash 12 mounted thereon is fitted into the mounting portion 2 on the papermaking apparatus side, the gap that required a conventional liner is filled with the sash 12 so that the liner is not required and the operation is simplified. . And screw 14
Fix with.

A top view of FIG. 5A and a sectional view of FIG. 5B show another embodiment different from the above. In this embodiment, the longitudinal direction of the main foil blade is divided into a plurality of parts, and in this embodiment, the main foil blade is divided into three parts. 51, 5
Reference numerals 2 and 53 denote foil blades obtained by dividing the main foil blade, respectively.
Has one end face cut at a right angle and the other end face cut at 45 °. The foil blade 52 has 45
° has been cut. The foil blade 53 has one end face cut at 45 ° and the other end face at a right angle. These three foil blades are used by being fitted into one long sash 54. 55 is a screw for fixing the two. The adjacent blades are fixed to the sash by the screws 55. By doing so, it is easy to produce and good workability can be achieved including transport. Also,
Total cost is also reduced. It is desirable to standardize the length of the divided blade.

It should be noted that the sash 54 may be the total length of the blades divided into a plurality,
It can also be divided in consideration of workability. P in FIG. 5 is a joint when the sash 54 is divided into two. In this case, the seam does not need to be inclined, and may be a right angle.

In the above embodiment, the embodiment in which the present invention is applied to the main foil blade has been described. However, the top wire foil blade 75, the under wire foil blade 76, and the suction foil blade 77 in FIG.
By forming the material from a synthetic resin or carbon, the same effect as described above can be obtained. In addition, including the blade surfaces of the top wire foil blade, the underwire foil blade, and the suction foil blade, and the rising surfaces following the blade surface on both sides thereof, diamond, CBN and other carbides, nitrided materials, etc. The same effect can be obtained by providing an electrodeposition layer on which particles such as an object are electrodeposited.

FIG. 9 is a sectional view of a top wire foil blade or an under wire foil blade, and FIG. 10 is a sectional view of a suction foil blade. 9, 80 is a top wire foil blade or an under wire foil blade, 81 is an electrodeposition surface, and 90 is a suction foil blade, 91 in FIG.
Is an electrodeposition surface.

[0031]

As described above, according to the present invention, particles such as diamond, CBN and other carbides and nitrides are formed on the blade surfaces of the main foil blade, the top wire foil blade, the underwire foil blade and the suction foil blade. Since the sliding surface is formed by the electrodeposition method, the corrosion resistance and abrasion resistance of the sliding surface can be greatly improved.

Further, since the material of the main foil blade, top wire foil blade, under wire foil blade and suction foil blade itself is made of synthetic resin or carbon from the conventional material, the weight is greatly reduced and it is easy to handle. Was.

Further, since the main foil blade is attached to the main body of the paper making apparatus via a titanium sash instead of the liner, the work is much easier.

Further, if the length direction of the main foil blade is divided, the workability is improved, including the ease of manufacture and the transportation. Also, there is an effect of reducing the total cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cross section of an embodiment of the present invention.

FIG. 2 is a perspective view of a cross section of one embodiment of the present invention.

FIG. 3 is a sectional view of one embodiment of the present invention.

FIG. 4 is a sectional view of one embodiment of the present invention.

FIGS. 5A and 5B are assembly views of another embodiment of the present invention.

FIG. 6 is a sectional view of an assembled state according to an embodiment of the present invention.

FIG. 7 is an explanatory diagram of a general paper making process.

FIG. 8 is a partially enlarged view of FIG. 7;

FIG. 9 is a sectional view of one embodiment of the present invention.

FIG. 10 is a sectional view of one embodiment of the present invention.

[Explanation of symbols]

10, 51, 52, 53 Main foil blade 11, 81, 91 Electrodeposited layer 12, 54 Sash 75 Top wire foil blade 76 Under wire foil blade 77 Suction foil blade

Claims (7)

[Claims] 1. A foil blade for a paper making machine, wherein a material of a main foil blade is made of synthetic resin or carbon. 2. An electrodeposition layer on which a particle such as diamond, CBN and other carbides and nitrides is electrodeposited, including a blade surface of a main foil blade and a rising surface following the blade surface on both sides thereof. The foil blade of the papermaking apparatus according to claim 1, wherein the foil blade is provided. 3. A main foil blade in which a titanium sash is assembled is fitted and attached to a portion to be attached to a paper making device.
The foil blade of the papermaking apparatus according to item 1. 4. The foil blade of a paper making apparatus according to claim 3, wherein the main foil blade is divided into a plurality of pieces in the longitudinal direction, and these are connected via a sash. 5. The foil blade of a paper making apparatus according to claim 3, wherein a seam at a position adjacent to the divided main foil blade forms an oblique angle. 6. A foil blade for a paper making machine, wherein the material of the top wire foil blade, the under wire foil blade, and the suction foil blade is made of synthetic resin or carbon. 7. Diamond, CBN and other carbides, nitrides, etc., including the blade surfaces of the top wire foil blade, the underwire foil blade, and the suction foil blade, and the rising surfaces following the blade surface on both sides thereof. The foil blade of the paper making apparatus according to claim 6, further comprising an electrodeposition layer on which the particles of (1) are electrodeposited.