JPH066493U - Suction box drainer mounting structure - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] The synthetic resin draining plate in the suction box of a paper machine is firmly attached to the suction box body, and the structure of the mounting plate is used to heat the synthetic resin draining plate. The expansion is absorbed well and the occurrence of distortion is eliminated to promote the spread of the draining plate. [Structure] A drainage plate 2 made of synthetic resin is formed with an engaging groove 8 in the papermaking width direction on the side in the papermaking width direction, and on the other hand, an inverted L-shaped mounting plate 9 having a latch portion 10 and a mounting portion 11 is formed. 10
Is engaged with the engaging groove 8 and the mounting portion 11 is bolted to the opening end of the suction box body 1, so that the lower engaging groove defining wall 16 is pressed by the latch portion 10, and the inverted L-shaped mounting plate 9 is attached. The first expansion absorption interval 19 and the second expansion absorption interval 22 are provided on the tip end surface of the latch portion and the inner surface of the bent portion, and are attached to the suction box 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suction box in which a draining plate contacting the backside of a papermaking belt of a paper machine is formed of synthetic resin, and more particularly to a draining plate mounting structure for properly mounting a synthetic resin draining plate to a suction box.

[0002]

[Prior art]

 Conventionally, the suction box has a draining plate that comes into contact with the backside of the papermaking belt.However, this draining plate is worn by high speed running of the papermaking belt, and in order to prevent this, the whole thing made of ceramic is used. It was

However, since ceramics are expensive and require careful handling, in recent years, the entire draining plate is made of a special synthetic resin, or the main body of the draining plate is made of a synthetic resin so that The contact part made of ceramic is now used.

As shown in FIG. 6, these synthetic resin draining plates are provided with an inclined notch 24 at the lower edge of the side face in the papermaking width direction of the draining plate 2 similarly to the mounting structure of the ceramic draining plate. A mounting portion 25 is formed at an opening end in the paper width direction of the main body 1, and an inclined mounting surface 26 is provided at an outer end of the mounting portion 25 so as to straddle the mounting surface 26 and the inclined bevel notch 24. This is a structure in which a mounting plate 27 formed of a flat plate is fastened to the filling mounting portion 25 with bolts 15, and the inclined notch portion 24 is pressed with the bolts 15 to mount the draining plate 2.

[0005]

[Problems to be solved by the device]

 However, when the draining plate is ceramic, there is no thermal expansion or contraction due to temperature difference, so it is possible to fix it so that it does not loosen on both sides.However, the synthetic resin draining plate is inexpensive and can be installed and handled. On the other hand, it has the advantage of not paying attention to ceramics, but on the other hand, it has a large coefficient of thermal expansion and cannot be properly absorbed by the conventional mounting structure, and the expansion causes strain on the surface of the drainboard made of synthetic resin. However, there is a problem in that the required dehydration performance cannot be obtained, which is a cause of hindering the spread of synthetic resin drainage boards.

[0006]

[Means for solving problems]

 The present invention solves the above-mentioned problems in a drainboard made of synthetic resin. As a means thereof, an inverted L-shaped mounting plate is formed, and a latch portion formed by one L-shaped piece of the inverted L-shaped mounting plate is used. Insert the fitting part formed on the side of the width direction of the drainage plate made of synthetic resin in the width direction of the papermaking direction and the L-shaped piece on the other side to the outside surface of the suction box opening direction in the papermaking direction. When the latch is pressed, the wall defining the engagement groove is pressed down and attached to the suction box. Further, the first expansion absorption gap is formed between the end surface of the latch and the inner end surface of the engagement groove. A second expansion absorbing space is formed between the inner surface of the inverted L-shaped bent portion at the upper end of the plate and the outer end surface of the engagement groove defining wall.

[0007]

[Action]

 According to the present invention, the drainage plate made of synthetic resin is pressed down by the latch portion of the inverted L-shaped mounting plate which engages the engagement groove defining wall with the first expansion absorption interval and the second expansion. Mounted on the suction box with an absorption interval.

Therefore, the thermal expansion of the synthetic resin draining plate is efficiently absorbed at the first and second expansion absorption intervals while achieving the purpose of securely attaching the draining plate to the suction box at the latch part, Effectively prevents the occurrence of distortion and secures the adhesion to the backside of the papermaking belt to achieve the required dehydration performance. By adopting this mounting structure, it is possible to promote the use of synthetic resin for the draining plate, which was difficult to achieve in the past, and it is possible to obtain the merits for practical use even under higher operating conditions and provide an economical suction box. .

[0009]

【Example】

 An embodiment of the present invention will be described in detail below with reference to FIGS. Reference numeral 1 is the suction box body. Reference numeral 2 is a draining plate which is attached so as to cover the suction surface, that is, the opening surface 3 of the suction box 1 and which comes into contact with the back surface of the papermaking belt 4 and drains the stock solution flowing on the surface of the papermaking belt 4.

The draining plate 2 is entirely made of synthetic resin as shown in FIG. 2A, or the main body 5 of the draining plate 2 is made of synthetic resin as shown in FIG. The contact portion 6 is made of ceramic, and an engaging groove 8 having a U-shape in the papermaking width direction is formed on a side 7 of the synthetic resin draining plate 2 in the papermaking width direction. On the other hand, a mounting plate 9 having an inverted L-shape as a whole is formed, and one L-shaped piece of the mounting plate 9 forms a latch portion 10 and the other L-shaped piece forms a mounting portion 11 to form a mounting portion 11. A bolt insertion hole 12 is provided.

The inverted L-shaped mounting plate 9 thus formed has its latch portion 10 engaged with the engagement groove 8 of the synthetic resin draining plate 2 and the other attachment portion 11 with the opening of the suction box body 1. Fill the outer side surface 14 of the flange portion 13 formed at the end in the papermaking width direction, insert the bolt 15 into the bolt insertion hole 12 of the mounting portion 11, and tighten.

By this tightening, the lower engaging groove defining wall 16 of the draining plate 2 is pressed by the latch portion 10 of the inverted L-shaped mounting plate 9, and the draining plate 2 is firmly attached to the suction box body 1.

FIGS. 5A to 5C show a mounting form of the inverted L-shaped mounting plate 9. As shown in FIGS. 5A and 5B, the engaging groove 8 extends from one end to the other end of the draining plate 2 in the papermaking width direction. The latch portions 10 are made to extend and the latch portions 10 of a plurality of attachment plates 9 are engaged in the engagement grooves 8 at intervals, or one attachment plate 9 having a wide width in the papermaking direction is formed. And tighten bolt 15.

Alternatively, as shown in FIG. 5C, the engaging grooves 8 are formed at both ends in the papermaking width direction, the ratchet portions 10 are inserted into the grooves 8 and the mounting plate 9 is tightened with bolts 15. The engaging groove 8 is formed on one side or both sides of the draining plate 2 in the papermaking width direction, and the mounting plate 9 is tightened with bolts 15.

As shown in FIGS. 3 and 4, by mounting the draining plate 2 by the inverted L-shaped mounting plate 9, between the latch part leading end surface 17 and the engagement groove inner end surface 18 of the synthetic resin draining plate 2. The first expansion absorption space 19 is formed, and the second expansion absorption space 22 is formed between the inner surface 20 of the bent portion at the upper end of the mounting plate 9 and the outer end surface 21 of the lower engagement groove defining wall.

In FIG. 3, the side in the width direction 7 of the draining plate 2, that is, the upper engaging groove defining wall 23 of the upper and lower engaging groove defining walls 21 and 23 is projected outward to define the lower engaging groove. A step is provided between the wall 21 and the first expansion / absorption gap 19 to form a path between the outer end surface 23 of the upper engagement groove defining wall and the outer surface of the mounting portion 11 of the inverted L-shaped mounting plate 9. The mounting plate 9 is tightened with the bolts 15 while forming the second expansion absorbing space 22 while making the surfaces substantially coincide with each other so as to form a vertical surface. In this embodiment, the stock L gas is effectively prevented from adhering to the inverted L-shaped mounting plate 9 and growing.

In FIG. 4, the outer end surfaces 21, 23 of the upper and lower engaging groove defining walls are substantially aligned with each other, and the outer end surfaces 21, 23 are formed in the opening end portion of the suction box body 1 in the papermaking width direction of the flange portion 13. A step is formed so as to be inside the outer side surface 14, and an inverted L-shaped mounting plate 9 is bolted to the outer side surface 14 with a bolt 15, and the step forms a first expansion absorption interval 19 and a second expansion absorption interval 22. There is.

Thus, the draining plate 2 is firmly fixed to the lower engagement groove defining wall 16 by the inverted L-shaped attachment plate 9 which is engaged with the engagement groove 8 and bolted to the suction box body 1 with the bolt 15. While being held, expansion due to heat is allowed by the first and second expansion and absorption intervals 19 and 22 to prevent contact with the papermaking belt 4 and generation of strain harmful to dehydration.

[0019]

[Effect of device]

 According to the present invention, the drainage plate made of synthetic resin has the first expansion and absorption interval and the second expansion and absorption interval by pressing the engagement groove defining wall with the latch portion of the inverted L-shaped attachment plate engaged with the engagement groove. It can be attached to the suction box with an expansion and absorption interval. Therefore, while achieving the purpose of firmly attaching the draining plate to the suction box at the ratchet portion, the thermal expansion of the synthetic resin draining plate is effectively absorbed by the first and second expansion absorption intervals, and the straining of the draining plate occurs. It is possible to effectively prevent the generation and to ensure the adhesion to the back side of the papermaking belt and to exhibit the required dehydration performance.

By adopting this mounting structure, it is possible to promote the use of a synthetic resin for the draining plate, which has been difficult to achieve in the past, and it is possible to obtain the merit of practical application even under higher operating conditions and to provide an economical suction box. it can.

That is, although the expansion of the synthetic resin draining plate has impeded the spread of the synthetic resin draining plate which impairs the dehydration performance, the present invention solves this problem and promotes the spread of the synthetic resin draining plate. It is a thing.

[Brief description of drawings]

FIG. 1 is a sectional view of a suction box showing an embodiment of the present invention.

FIG. 2A is a cross-sectional view of a draining plate which is entirely made of synthetic resin.

FIG. 2B is a cross-sectional view of a draining plate which is entirely made of synthetic resin and whose contact portion is made of ceramic.

FIG. 3 is an enlarged sectional view showing a mounting portion of the draining plate.

FIG. 4 is an enlarged cross-sectional view showing another example of the attachment structure of the draining plate.

FIG. 5A is a rear view illustrating the attachment structure of the engagement groove of the draining plate and the inverted L-shaped attachment plate.

FIG. 5B is a side view showing the other example.

FIG. 5C is a side view showing the other example.

FIG. 6 is a sectional view of a suction box showing a conventional example.

[Explanation of symbols]

 1 Suction Box Main Body 2 Drainer 4 Paper Making Band 8 Engagement Groove 9 Reverse L-shaped Mounting Plate 10 Latch Part 11 Mounting Part 15 Bolt 16 Lower Engagement Groove Defining Wall 19 First Expansion Absorption Interval 22 Second Expansion Absorption Interval

Claims (1)

[Scope of utility model registration request] 1. A dewatering suction box in a paper machine, wherein a suction surface of a suction box body is fitted with a synthetic resin draining plate that comes into contact with the back surface of a papermaking belt. On the other hand, an engaging groove is formed in the width direction, and on the other hand, a mounting plate having an inverted L-shape as a whole is formed, and the latch portion formed by one L-shaped piece of the inverted L-shaped mounting plate is inserted into the engaging groove. At the same time, a mounting portion formed by the other L-shaped piece is filled on the outer side surface of the suction box opening end in the papermaking width direction by bolts, and the latch portion presses the engaging groove defining wall by the bolts. Further, a first expansion gap is formed between the tip end surface of the latch portion and the inner end surface of the engagement groove, and a second expansion absorption gap is provided between the inner surface of the bent portion at the upper end of the inverted L-shaped mounting plate and the outer end surface of the engagement groove defining wall. Suction body characterized by forming Draining plate mounting structure of the box.