An inner peripheral heating corrugated roller

Abstract

The present invention relates to an inner peripheral heating corrugated roller, comprising a corrugated roller body, wherein a plurality of steam channels are arranged in the corrugated roller body, each group of steam channels is evenly distributed in a ring around the center of the corrugated roller body and close to the outer wall of the corrugated roller body, each group of steam channels includes more than four pipelines, the pipelines are directed along the axis direction of the corrugated roller body, and the pipelines are connected in sequence; a steam inlet channel and a steam return channel are arranged at one end of the corrugated roller body, and the two ends of each group of steam channels are connected to the steam inlet channel and the steam return channel respectively. The inner peripheral heating corrugated roller has steam channels distributed on the wall of the corrugated roller body, and since the steam channels are close to the outer wall of the corrugated roller body, the heating speed is fast and the heat loss is reduced.

Description

Technical Field

[0001] The invention relates to a corrugated roller, in particular to an inner periphery heated corrugated roller. Background Art

[0002] At present, the heating method of corrugated rollers used in corrugated board equipment is: a hot cylinder is set inside the roller body. Due to the large internal space of the hot cylinder, it takes a long time to be filled with saturated high-temperature steam. In addition, due to the thick wall, it takes a long time for the heat of the steam to be transferred to the surface of the roller body, which increases the heat loss. In addition, due to the large temperature difference between the upper and lower parts of the roller body, the roller body is deformed. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide an inner peripheral heating corrugated roller which reduces heat loss, reduces deformation of the corrugated roller and has a fast heating speed.

[0004] The object of the present invention is achieved in that:

[0005] A corrugated roller with inner peripheral heating includes a corrugated roller body, characterized in that a plurality of steam channels are arranged in the corrugated roller body, each group of steam channels is evenly distributed in a ring around the center of the corrugated roller body and close to the outer wall of the corrugated roller body, each group of steam channels includes more than four pipelines, the pipelines are directed along the axis direction of the corrugated roller body, and the pipelines are connected in series in sequence; a steam inlet channel and a steam return channel are arranged at one end of the corrugated roller body, and the two ends of each group of steam channels are connected to the steam inlet channel and the steam return channel respectively. When the corrugated roller is used in this structure, steam enters the steam inlet channel and then flows into each group of steam channels, and this structure connects more than four pipelines in series so that the path of the steam in each group of steam channels on the corrugated roller body is like a W shape, so as to improve the heat utilization rate, and appropriately reduce the number of steam channel groups, so as to avoid the steam entering the steam inlet channel from rapidly reducing the steam pressure due to too many tributaries, thereby affecting the steam temperature. Although the input steam pressure can be increased if there are too many tributaries, if the steam pressure is increased, the pressure resistance of the corresponding parts will also need to be further improved, which will greatly increase the cost and require higher technology to overcome this problem. In addition, the risk will also increase exponentially. Therefore, this approach is difficult to achieve.

[0006] The purpose of the present invention can also be solved by the following technical measures:

[0007] As a more specific solution, the corrugated roller body includes a roller body, a first shaft head and a second shaft head; the roller body is cylindrical, and the pipeline is arranged in the wall of the roller body and passes through both ends of the wall body; the first shaft head and the second shaft head are respectively arranged at both ends of the roller body, and the first shaft head and the second shaft head are respectively supported on the end surface of the roller body, and the first shaft head and the second shaft head are respectively provided with a first series groove and a second series groove for connecting the pipelines.

[0008] As a further solution, both ends of the pipeline pass through the first shaft head and the second shaft head respectively, the first shaft head is provided with a first plug for closing one end of the pipeline, and the second shaft head is provided with a second plug for closing the other end of the pipeline.

[0009] As a further solution, the first shaft head is provided with the steam inlet channel and the steam return channel, and the steam inlet channel and the steam return channel lead to the outer end surface of the first shaft head.

[0010] As a further solution, the first shaft head is provided with a center hole, the inner end of the first shaft head is provided with a concave cavity, a center tube is provided in the center hole, the steam inlet channel is formed on the inner side of the center tube, the steam return channel is connected between the outer wall of the center tube and the inner wall of the center hole, and the inner end of the center tube extends into the concave cavity; the inner end of the first shaft head is embedded in the end of the roller body, a partition is provided in the concave cavity, the partition and the inner end of the center tube together divide the inside of the concave cavity into a steam inlet cavity and a steam return cavity, a shunt pipe is provided on the side wall of the steam inlet cavity, a steam return pipe is provided on the side wall of the steam return cavity, one end of the shunt pipe is connected to one end of the steam channel, the other end of the shunt pipe is connected to the steam inlet channel through the steam inlet cavity, one end of the steam return pipe is connected to the other end of the steam channel, and the other end of the steam return pipe is connected to the steam return channel through the steam return cavity.

[0011] As a further solution, the concave cavity leads to the inner end surface of the first shaft head, and the inner end surface of the first shaft head is provided with a cover plate, which is welded to the inner end surface of the first shaft head and closes the concave cavity.

[0012] As a further solution, a plurality of annular grooves are provided on the outer circumference of the roller body, and the annular grooves are arranged along the axial direction of the roller body.

[0013] As a further solution, a ventilation channel is provided at the center of the second shaft head, one end of the ventilation channel leads to the outer end surface of the second shaft head, and the other end of the ventilation channel is connected to the inner cavity of the roller body.

[0014] As a further solution, the steam channels are provided in five to ten groups, and each group of the steam channels includes four pipelines.

[0015] As a further solution, the steam channels are provided in seven groups.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) The inner peripheral heating corrugated roller has a steam channel distributed on the wall of the corrugated roller body. Since the steam channel is close to the outer wall of the corrugated roller body, the heating speed is fast and the heat loss is reduced;

[0018] (2) The inner peripheral heating corrugated roller is constructed by connecting more than four pipelines in series, so that the steam in each group of steam channels travels in a W-shaped path on the corrugated roller body, thereby improving the heat utilization rate and appropriately reducing the number of steam channels to avoid the steam entering the steam inlet channel from rapidly reducing the steam pressure due to too many branches, thereby affecting the steam temperature; at the same time, steam with a lower pressure can be used to input into the steam channel, which is lower in cost;

[0019] (3) The inner peripheral heating corrugated roller has evenly distributed pipes on its wall, forming a hollow structure, which has higher rigidity than a solid structure (this phenomenon is the same as the wheel hub, which also adopts a hollow structure instead of a solid structure). BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0021] Figure 2 for Figure 1 AA cross-sectional structure schematic diagram.

[0022] Figure 3 for Figure 2 Schematic diagram of the BB cross-sectional structure.

[0023] Figure 4 for Figure 2 Schematic diagram of the CC cross-sectional structure.

[0024] Figure 5 for Figure 2 Schematic diagram of DD cross-sectional structure.

[0025] Figure 6 for Figure 1 Schematic diagram of EE cross-sectional structure.

[0026] Figure 7 It is a schematic diagram of the steam flow direction of each group of steam channels in the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0028] See also Figures 1 to 6 As shown, an inner peripheral heating corrugated roller comprises a corrugated roller body, wherein a plurality of steam channels are arranged in the corrugated roller body, each group of steam channels is evenly distributed in a ring around the center of the corrugated roller body and close to the outer wall of the corrugated roller body, each group of steam channels comprises four pipelines 12, the pipelines 12 are pointed along the axis direction of the corrugated roller body, and the pipelines 12 are connected in series in sequence; a steam inlet channel 21 and a steam return channel 22 are arranged at one end of the corrugated roller body, and both ends of each group of steam channels are connected to the steam inlet channel 21 and the steam return channel 22 respectively.

[0029] The corrugated roller body includes a roller body 1, a first shaft head 2 and a second shaft head 6; the roller body 1 is cylindrical, and the pipeline 12 is arranged in the wall of the roller body 1 and passes through both ends of the wall; the first shaft head 2 and the second shaft head 6 are respectively arranged at both ends of the roller body 1, and the first shaft head 2 and the second shaft head 6 are respectively supported on the end surfaces of the roller body 1, and the first shaft head 2 and the second shaft head 6 are respectively provided with a first series groove 27 and a second series groove 62 for connecting the pipeline 12.

[0030] The two ends of the pipeline 12 pass through the first shaft head 2 and the second shaft head 6 respectively. The first shaft head 2 is provided with a first plug 3 for closing one end of the pipeline 12, and the second shaft head 6 is provided with a second plug 7 for closing the other end of the pipeline 12.

[0031] The first shaft head 2 is provided with the steam inlet channel 21 and the steam return channel 22 , and the steam inlet channel 21 and the steam return channel 22 lead to the outer end surface of the first shaft head 2 .

[0032] The first shaft head 2 is provided with a center hole, and the inner end of the first shaft head 2 is provided with a concave cavity. A center tube 4 is provided in the center hole. The steam inlet channel 21 is formed on the inner side of the center tube 4. The steam return channel 22 is formed between the outer wall of the center tube 4 and the inner wall of the center hole, and the inner end of the center tube 4 extends into the concave cavity; the inner end of the first shaft head 2 is embedded in the end of the roller body 1, and a partition 8 is provided in the concave cavity. The partition 8 and the inner end of the center tube 4 jointly divide the interior of the concave cavity into a steam inlet chamber 23 and a steam return chamber 24. A shunt pipe 26 is provided on the side wall of the steam inlet chamber 23, and a steam return pipe 25 is provided on the side wall of the steam return chamber 24. One end of the shunt pipe 26 is connected to one end of the steam channel, and the other end of the shunt pipe 26 is connected to the steam inlet channel 21 through the steam inlet chamber 23. One end of the steam return pipe 25 is connected to the other end of the steam channel, and the other end of the steam return pipe 25 is connected to the steam return channel 22 through the steam return chamber 24.

[0033] The concave cavity leads to the inner end surface of the first shaft head 2. The inner end surface of the first shaft head 2 is provided with a cover plate 5. The cover plate 5 is welded to the inner end surface of the first shaft head 2 and closes the concave cavity.

[0034] The outer periphery of the roller body 1 is provided with a plurality of annular grooves 11 , and the annular grooves 11 are arranged along the axial direction of the roller body 1 .

[0035] A ventilation channel 61 (J) is provided at the center of the second shaft head 6 , one end of the ventilation channel 61 leads to the outer end surface of the second shaft head 6 , and the other end of the ventilation channel 61 is communicated with the inner cavity of the roller body 1 .

[0036] The steam channel is provided with seven groups, i.e., 28 pipes 12 (see Figures 3 to 5 As shown, the 28 pipelines 12 include a1-a28 in sequence, and the cross-sectional area of ​​the steam inlet channel 21 is greater than the sum of the cross-sectional areas of all the branch pipes 26.

[0037] Its working principle is: there are seven groups of steam channels, namely: pipelines a1-a4 constitute the first group of steam channels, pipelines a5-a8 constitute the second group of steam channels, pipelines a9-a12 constitute the third group of steam channels, pipelines a13-a16 constitute the fourth group of steam channels, pipelines a17-a20 constitute the fifth group of steam channels, pipelines a21-a24 constitute the sixth group of steam channels, and pipelines a25-a28 constitute the seventh group of steam channels; taking the flow direction of the first group of steam channels as an example, the external high-temperature steam enters one end of the pipeline a1 along the F arrow through the steam inlet channel 21, the steam inlet cavity 23, and the diverter pipe 26 in sequence, and then the steam flows to the other end of the pipeline a1, and then along the G arrow through a second series groove 62 enters one end of pipeline a2 (the end near the second shaft head 6), the steam flows along the inside of pipeline a2 to the other end of pipeline a2 (the end near the first shaft head 2), and then enters one end of pipeline a3 (the end near the first shaft head 2) through a first series of grooves 27 along the arrow H, the steam flows along the inside of pipeline a3 to the other end of pipeline a3 (the end near the second shaft head 6), and then enters one end of pipeline a4 (the end near the second shaft head 6) through another second series of grooves 62 along the arrow G, the steam flows along the inside of pipeline a4 to the other end of pipeline a4 (the end near the first shaft head 2), and finally, it is discharged in the direction of the arrow H through the return steam pipe 25, the return steam chamber 24, and the return steam channel 22. The above steam flow path can be seen in Figure 7 As shown, and from Figure 7 As can be seen from the dashed line, the steam flow path is W-shaped.

Claims

1. An inner peripheral heating corrugated roller, comprising a corrugated roller body, characterized in that: A plurality of steam channels are provided in the corrugating roller body, each group of steam channels is evenly distributed in a ring around the center of the corrugating roller body and close to the outer wall of the corrugating roller body, each group of steam channels includes more than four pipelines (12), the pipelines (12) are directed along the axis direction of the corrugating roller body, and the pipelines (12) are connected in series in sequence; a steam inlet channel (21) and a steam return channel (22) are provided at one end of the corrugating roller body, and both ends of each group of steam channels are respectively connected to the steam inlet channel (21) and the steam return channel (22); The corrugated roller body comprises a roller body (1), a first shaft head (2) and a second shaft head (6); the roller body (1) is cylindrical, and the pipeline (12) is arranged in the wall of the roller body (1) and passes through both ends of the wall; the first shaft head (2) and the second shaft head (6) are respectively arranged at both ends of the roller body (1), the first shaft head (2) and the second shaft head (6) are respectively supported on the end surface of the roller body (1), and the first shaft head (2) and the second shaft head (6) are respectively provided with a first connecting groove (27) and a second connecting groove (62) which are connected in series with the pipeline (12); The two ends of the pipeline (12) respectively pass through the first shaft head (2) and the second shaft head (6); the first shaft head (2) is provided with a first plug (3) for closing one end of the pipeline (12); and the second shaft head (6) is provided with a second plug (7) for closing the other end of the pipeline (12); The first shaft head (2) is provided with the steam inlet channel (21) and the steam return channel (22), and the steam inlet channel (21) and the steam return channel (22) lead to the outer end surface of the first shaft head (2); The first shaft head (2) is provided with a center hole, the inner end of the first shaft head (2) is provided with a concave cavity, a center tube (4) is provided in the center hole, the inner side of the center tube (4) forms the steam inlet channel (21), the outer wall of the center tube (4) and the inner wall of the center hole form the steam return channel (22), and the inner end of the center tube (4) extends into the concave cavity; the inner end of the first shaft head (2) is embedded in the end of the roller body (1), a partition (8) is provided in the concave cavity, and the partition (8) and the inner end of the center tube (4) together seal the interior of the concave cavity. The steam inlet chamber (23) is divided into a steam inlet chamber (23) and a steam return chamber (24). A shunt pipe (26) is provided on the side wall of the steam inlet chamber (23), and a steam return pipe (25) is provided on the side wall of the steam return chamber (24). One end of the shunt pipe (26) is connected to one end of the steam channel, and the other end of the shunt pipe (26) is connected to the steam inlet channel (21) through the steam inlet chamber (23). One end of the steam return pipe (25) is connected to the other end of the steam channel, and the other end of the steam return pipe (25) is connected to the steam return channel (22) through the steam return chamber (24).

2. The inner periphery heated corrugated roller according to claim 1, characterized in that: The concave cavity leads to the inner end surface of the first shaft head (2); the inner end surface of the first shaft head (2) is provided with a cover plate (5); the cover plate (5) is welded to the inner end surface of the first shaft head (2) and closes the concave cavity.

3. The inner periphery heated corrugated roller according to claim 1, characterized in that: The outer circumference of the roller body (1) is provided with a plurality of annular grooves (11), and the annular grooves (11) are arranged along the axial direction of the roller body (1).

4. The inner periphery heated corrugated roller according to claim 1, characterized in that: A ventilation channel (61) is provided at the centre of the second shaft head (6), one end of the ventilation channel (61) leads to the outer end surface of the second shaft head (6), and the other end of the ventilation channel (61) is communicated with the inner cavity of the roller body (1).

5. The inner periphery heated corrugated roller according to claim 1, characterized in that: The steam channels are provided in five to ten groups, and each group of steam channels comprises four pipelines (12).

6. The inner periphery heated corrugated roller according to claim 5, characterized in that: The steam channels are provided with seven groups.

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