JPH0594300U - Rolls for paper machines - Google Patents

Abstract

(57) [Summary] [Purpose] The space required for the duct is omitted. A hollow cylindrical rotating roll shell 18 having a large number of small holes 25 is rotatably arranged at intervals on the outer periphery, and both ends of the inner periphery of the rotating roll shell 18 are
A vane unit 27 having a large number of fan vanes 26 extending toward the space 19 between the rotating roll shell 18 and the fixed barrel 15 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a roll for a papermaking machine.

[0002]

[Prior Art]

 For example, in a dryer part of a paper machine, a large number of dryer rolls are provided to dry strips of paper and the like, and the strips are guided to the dryer rolls at positions between the dryer rolls. In order to achieve this, rolls for paper machines that suck and hold air to hold the strips and rolls for paper machines that blow off hot air to supplementally dry the strips are installed. Has been.

A conventional papermaking machine roll will be described with reference to FIGS. 4 to 6.

A cylindrical support shaft portion 2 is attached to both ends of a hollow cylindrical fixed cylinder 1 so as to communicate with the inside of the fixed cylinder 1. The support shaft portion 2 is supported by a support base 3 and A hollow cylindrical rotating roll shell 4 is arranged concentrically with the fixed cylinder 1 to form a cylindrical space 5 between the two, and further, a cylindrical cylindrical shape is attached to both ends of the rotating roll shell 4. The support shaft portion 6 is rotatably supported by a bearing 7 provided on the support base 3.

A frame body 10 for forming a chamber 9 inside is attached to the outer periphery of the fixed body 1 so as to surround a portion of the ring-shaped space 5 through which the belt-shaped material 8 passes, and a rotary roll shell 4 has a large number of small holes 11 formed all around the body portion, and through holes 12 are appropriately formed in a portion of the fixed body 1 surrounded by the frame body 10. The other end of the duct 14 whose one end is connected to the blower 13 is connected to the end opening.

Here, in the case where the roll for the papermaking machine sucks air, one end of the duct 14 is connected to the suction port side of the blower 13, and conversely, when hot air is blown out. Although not shown in the figure, one end of the duct 14 is connected to the discharge port side of the blower 13 to provide a heater in the middle of the duct 14.

Further, the rotary roll shell 4 may be rotationally driven by a driving device (not shown) or may be rotationally driven by a whirl.

Then, by driving the blower 13, the inside of the fixed barrel 1 is sucked through the duct 14 and both supporting shaft portions 2, and the frame body 10 is passed through the through hole 12 formed in the fixed barrel 1. The inside of the chamber 9 surrounded by is sucked, and as a result, of the small holes 11 formed in the rotating roll shell 4 that is rotating, air is sucked only from the small holes 11 in the portion passing through the chamber 9, and the strip shape is formed. Object 8 is sucked.

When hot air is blown out, the hot air is blown out only from the small holes 11 in the portion passing through the chamber 9 contrary to the above.

[0010]

[Problems to be solved by the device]

 However, the above-mentioned conventional papermaking machine roll has the following problems.

That is, since the above-described conventional papermaking machine roll needs to be connected to an external blower 13, a thick and long duct 14 must be provided between the blower 13 and the papermaking machine. Usually, 50 to 60 or more machine rolls are provided at one time, and therefore, the duct 14 is required to have about a hundred or more, and a duct work alone requires a very large space.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a roll for a papermaking machine in which a space required for a duct can be omitted.

[0013]

[Means for Solving the Problems]

 According to the present invention, a hollow cylindrical rotating roll shell 18 having a large number of small holes 25 is rotatably disposed at the outer periphery of the fixed barrel 15 and is provided at both ends of the inner periphery of the rotating roll shell 18. The present invention relates to a roll for a papermaking machine, which is characterized in that a vane unit 27 having a large number of fan vanes 26 extending toward the space 19 between the rotary roll shell 18 and the fixed cylinder 15 is provided.

[0014]

[Action]

 According to the present invention, when the rotating roll shell 18 rotates, the fan vanes 26 provided at both ends of the inner periphery of the rotating roll shell 18 rotate, and the inside of the space 19 between the rotating roll shell 18 and the fixing cylinder 15 is rotated. Is sucked in, or air is sent into the space 19, and air is sucked in or blown out from the small holes 25 formed in the rotary roll shell 18.

This eliminates the need to connect an external blower, so that a duct for connection is unnecessary and the space required for the duct is omitted.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention.

A cylindrical support shaft portion 16 is attached to both ends of the hollow cylindrical fixed barrel 15 so as not to communicate with the fixed barrel 15, and the support shaft portion 16 is rotatably supported with respect to a support base 17. At the same time, a hollow cylindrical rotating roll shell 18 is arranged on the outer periphery of the fixed cylinder 15 concentrically with the fixed cylinder 15 to form a cylindrical space 19 between the two, and is attached to both ends of the rotating roll shell 18. The cylindrical support shaft portion 20 is rotatably supported by the bearing 21 provided on the support base 17.

As shown in FIG. 3, a frame 23 is attached to the outer periphery of the fixed body 15 to cover a portion of the ring-shaped space 19 other than the range through which the strip 22 passes, and the strip 22 2 An air passage 24 extending in the axial direction of the rotary roll shell 18 is formed in a portion of a range where the air passes.

A large number of small holes 25 are formed on the entire circumference of the body of the rotating roll shell 18, and fan vanes that extend radially toward the support shaft 16 are formed on the inner circumferences of both ends of the rotating roll shell 18. A plurality of vane units 27, each having a plurality of 26 mounted in the circumferential direction, are arranged in multiple stages in the axial direction to form an axial fan 28, which penetrates the support shaft portion 16 at a position closer to the end than the axial fan 28. A hole 29 is formed, and an air inlet / outlet 30 communicating with the end of the support shaft portion 16 and opening upward is attached to the support base 17.

If necessary, through holes 31 and through holes 32 may be formed on the peripheral surface and the end surface of the fixed cylinder 15, and the inside of the fixed cylinder 15 may be partitioned by a partition 33 or the like to penetrate the through holes 31 and the through holes 31 and 32. The volume of the portion in which the holes 32 are formed may be adjusted, and as shown in the drawing, the space is adjusted according to the width dimension of the leading end portion of the strip 22 whose leading end is thinly cut for the passage of paper. The passage 24 may be partitioned by a partition 34 so as to form a portion 38 adapted to accommodate the narrow strip 22 at the time of sheet passing, and further, a supporting shaft mounted on the fixed cylinder 15 in multiple stages. A fixed vane (not shown) may be attached at a position between the vane units 27 of the portion 16.

Depending on the mounting angle of the fan vanes 26, the papermaking machine roll can be set to suck air or blow air.

The rotating roll shell 18 may be rotated by a driving device (not shown) or may be rotated by a swing.

Reference numeral 35 denotes a phase adjusting device for rotating the support shaft portion 16 and the fixed barrel 15 by the action of the worm 36 and the worm wheel 37 to adjust or change the phase of the air passage 24.

Next, the operation will be described.

The operation of the papermaking machine roll when sucking air is as follows.

Whether the rotary roll shell 18 is rotationally driven by a drive device (not shown) or is rotated by a swing, when the rotary roll shell 18 is rotated, the rotary roll shell 18 is rotated. The fan vane 26 provided at the inner peripheral end of the frame rotates, and the rotation of the fan vane 26 causes the frame 23 in the ring-shaped space 19 formed between the rotating roll shell 18 and the fixing cylinder 15. The inside of the air passage 24 formed in the uncovered portion is sucked, and as a result, the small hole 25 passing through the air passage 24 of the small holes 25 formed in the rotating roll roll 18 is rotated. The air is sucked from the chisel, and the strip 22 is sucked.

Then, the air sucked from the air passage 24 by the fan vanes 26 and the water dewatered from the belt-like material 22 together with the air penetrate through the supporting shaft portion 16 of the fixed barrel 15 from the air passage 24. It enters the inside of the support shaft portion 16 through the hole 29, and is discharged to the outside from the support shaft portion 16 through the air inlet / outlet port 30.

If it is desired to increase the volume of the air passage 24 from the relationship between the suction capacity of the axial fan 28 and the volume of the air passage 24, the through holes 31 and 32 are formed in the fixed barrel 15. A part of the air in the air passage 24 may once enter the fixed barrel 15 and be guided from the fixed barrel 15 into the support shaft portion 16 by the fan vanes 26.

At this time, the interior of the fixed barrel 15 may be partitioned by a partition 33 to adjust the volume of the portion of the fixed barrel 15 where the through holes 31 and the through holes 32 are formed.

As described above, by providing the fan vanes 26 inside the rotating roll shell 18, since the axial fan 28 is built in the roll for the papermaking machine, as compared with the case of FIGS. 4 to 6, The large number of large ducts 14 for connecting to the external blower 13 is eliminated, and it is not necessary to secure a large space for duct work.

On the contrary, in order to blow out the wind from the roll for the papermaking machine, the mounting angle of the fan vane 26 may be set to the opposite of the above.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0034]

[Effect of the device]

 As described above, according to the papermaking machine roll of the present invention, the hollow cylindrical rotating roll shell 18 having a large number of small holes 25 is rotatably arranged at the outer periphery and the rotating roll shell 18 is rotated. Since the vane units 27 having a large number of fan vanes 26 extending toward the space 19 between the rotating roll shell 18 and the fixed barrel 15 are provided at both ends of the inner circumference of the roll shell 18, the space required for the duct is omitted. It can have an excellent effect that it can.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of an embodiment of the present invention.

2 is a view taken along the line II-II of FIG.

FIG. 3 is a schematic perspective view of a frame portion of FIG.

FIG. 4 is a schematic side sectional view of a conventional example.

5 is a view on arrow VV in FIG. 4. FIG.

FIG. 6 is a schematic perspective view of a frame portion of FIG.

[Explanation of symbols]

 15 Fixed Cylinder 18 Rotating Roll Shell 19 Space 25 Small Hole 26 Fan Vane 27 Vane Unit

Claims (1)

[Scope of utility model registration request] 1. A hollow cylindrical rotating roll shell 18 having a large number of small holes 25 at intervals on the outer periphery of a fixed cylinder 15.
Is rotatably disposed and the rotating roll shell 18
A roll for a papermaking machine, comprising vane units 27 having a large number of fan vanes 26 extending toward the space 19 between the rotating roll shell 18 and the fixed cylinder 15 at both ends of the inner periphery of the roll.