Device for compression and processing of the material of the mat in the production of cardboard

 

(57) Abstract:

Device for compression and processing of the material of the Mat in paperboard production from lignocellulosic material contains a rotating crimp rolls. At least one of the squeeze rolls 2 is made with a perforated surface 6 of the roll shell and the axial channel system 7 located on the inner side surface 6. The sliding Shoe 8 uplatnena abuts against the end wall of the roll 2 for injection (injection) of the manufacturing environment to the Mat through the channel system 7 in a restricted sector of the roll 2, where the compression of the Mat. Flow manufacturing environment through the crimp roller allows you to avoid sliding friction, which reduces the wear of the contacting surfaces of the Mat and elements of the device for its compression and processing. 8 C.p. f-crystals, 7 Il.

The invention relates to the continuous production of cardboard by a dry process using as raw material lignocellulosic material such as wood, straw, sugar cane, etc., More specifically, the invention relates to a device for pressing and processing of the Mat of lignocellulosic material in the production of cardboard.

The process of appropriate size, drying them to a moisture, sizing material before or after drying, education of glued material of the Mat, compression and hot pressing the Mat to the finished carton.

Continuous compression and compressing the Mat to get cardboard positive effect introduction (injection box) in the Mat corresponding to the manufacturing environment in the form of a gas or liquid, than also improve the properties of the finished carton. An example of such a manufacturing environment is steam, which heats and moisturizes the fibers in the material and thus facilitates the operation of pressing and/or accelerates the curing process. You can also enter curing or accelerating components in already glued the Mat.

For the introduction of steam or other gas in the mats usually use the injection method, in which the slides Mat or wire bearing Mat. The box is equipped with a large number of injection holes or slots and the edge, sealing Mat or wire support. The box may be made, for example, in the form of a tubular packaging or may be made in any other way. Common to all different forms of trunking is that these boxes should be designed so that the Mat sludge which is on one side of the Mat, and the suction duct on the opposite side, directly in front of or in the shifted condition. Injection and suction boxes are usually the same shape.

The relative sliding between the Mat or wire support and, accordingly, the suction ducts leads to significant wear of the sliding surfaces, therefore, at least the sliding surfaces must be replaced. In addition, the slip Mat or wire support and ducts often causes problems sealing the edges.

The aforementioned problems are eliminated with the present invention, according to which the flow of the processing environment is performed via a crimping roller that allows you to avoid sliding. Distinctive features of the present invention are evident from the claims.

The invention is described below in more detail with reference to the attached drawings, which illustrate examples of various embodiments of the invention, in which:

in Fig. 1 is a schematic diagram of the location of the device,

in Fig. 2-5 schematically shows the various devices in which the invention is applied,

in Fig. 6 shows a fragment of the end with the">

When compression and processing of the Mat 1 in the manufacture of cardboard perform compression crimp roller 2 (Fig. 1). This roller can work satisfactorily in a pair of opposing roller 3, which ensures a symmetrical compression of the Mat 1 on both sides (Fig. 2-5). The manufacturing environment may be injected through the rolls 2, 3 is symmetrical on both sides (Fig. 2, 3). This provides a uniform treatment of the Mat as well as the optimal removal of air from the Mat to the entrance. Alternative roller 2 can be used for injection at the time, as opposed roller 3 works only as a reference swath (Fig. 4) or as a suction roller (Fig. 5). In Fig. 2, 4 and 5 show the device in which the wire 4 with the rollers 5 are used as a support Mat 1, while in Fig. 3 shows the device without wires.

It is shown in Fig. 6 crimp and injection roller 2 has a perforated surface 6 of the shell for submission to the Mat 1 of the manufacturing environment. With the inner side surface 6 of the shell around the circumference of the roll 2 is system 7 axial channels designed to distribute the processing environment across the width of the roll 2 and, consequently, the Mat 1. In the end wall of the roller 2 abuts with adjustable seal is done in a limited sector 9 of the roll 2, where the compression of the Mat 1. This limited sector 9 is covered on both sides, in the direction around the circle, the sealing zone 10, where the roller 2 is in contact with the Mat 1. Channel system 7 can be closed in the opposite end wall of the roll 2. Alternative sliding Shoe 8 may be performed in each end wall.

The sliding Shoe is held in place by means of an adjustable stand so that he could move in the direction around the circle. Thus it is possible to change the position of the injection sector 9. Sliding Shoe, perform, preferably with replaceable wear part 14 of miscorrection material, which rests on the working surface on the end wall of the roll 2. The sliding Shoe 8 is held pressed against the end wall of the roll, for example, by means of a spring, compressed air or hydraulics to leak in the sealing surfaces have been minimized.

The sliding Shoe can be performed with one or more channels 11, 12, 13, which may have different cross-sections. Can also be used replaceable wear part 14 with a different orifice, for example, this may be the IC is clonage sector 9. In various parts of the injection sector 9 can be supported by different flows and pressures. The channels of the sliding Shoe can also be used for cleaning by blowing and suction.

In Fig. 6 schematically shows the contact surface of the sliding Shoe 8 and the end wall of the roll 2. The sliding Shoe 8 is equipped with injection channels 11 for the manufacturing environment, the channel 12 for cleaning by blowing and suction channel 13. The manufacturing environment may be, for example, low pressure steam, going by the first injection inlet channel 11, appears in the drawing in the direction of flow, and high pressure steam, running on the second injection channel 11. Perforated surface 6 of the roll shell 2 may consist of a stamped or perforated metal sheet with cavities, which is in the form of rings firmly planted on the swath. Axial support strip 15 to the hollow sheet metal can be made in the metal sheet 16 of the shell of the roll by means of milling or casting, or they may consist of separate strips fixed in the grooves of the metal sheet 16 of the shell. Strip 15 can determine the channel system 7 with the inner side surface 6 of the shell.

The holes in the channel system 7, which in the end wall of the roll 2 is not covered with the sliding Shoe 8 can be sealed by means of an adjustable sliding ring of miscorrection material, which is held pressed against the end wall.

To prevent condensation in the duct system 7 roller 2 can be heated. This can be done preferably with grooves 17 located throughout the channel system 7, preferably in a spiral in felling 2 inside the system 7. These grooves can be placed in heating the metal sheet 18 from the inner side of the metal sheet 16 of the shell of the roll. In the grooves 17 steam, oil or hot water circulating so that the metal sheet 16 heat flows evenly.

The invention is not limited to the above-described variants of its implementation, and it may be modified within the scope of patent claims.

1. Device for compression and processing of the material of the Mat in paperboard production from lignocellulosic material containing a rotating crimp rolls (2) and means for supplying the processing creditu (6) of the roll shell and the axial channel system (7), located on the inner side surface of the shell, and the sliding Shoe (8) is configured to rest on the end wall of the roll (2) to summarize the manufacturing environment to the Mat through the channel system (7) in the area of the bounding sector (9) of the roll (2), where the compression of the Mat.

2. The device under item 1, characterized in that the channel system (7) of the roll (2) is defined by many axial bearing strips (15), which are perforated metal sheet constituting the surface (6) of the shell of the roll.

3. The device under item 1 or 2, characterized in that the sliding Shoe (8) contains several channels (11) for introducing one or more processing environments.

4. Device according to any one of the preceding paragraphs, characterized in that the sliding Shoe (8) also contains channels (12, 13) for cleaning by blowing and/or suction.

5. Device according to any one of the preceding paragraphs, characterized in that the sliding Shoe (8) is arranged to move in the circumferential direction of the roll (2) for adjusting the position of the injection sector (9).

6. Device according to any one of the preceding paragraphs, characterized in that it comprises means (17, 18) and grooves (17) metal heating plate (18) is located within the channel system (7).

8. Device according to any one of the preceding paragraphs, characterized in that the sliding Shoe (8) is located at each end wall of the roll (2).

9. Device according to any one of the preceding paragraphs, characterized in that the sliding Shoe (8) is configured to rest on the end wall of the roll (2) through a replaceable wear part (14).

 

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