Steam heating corrugated roller
By setting up drainage tanks and drainage channels in the steam-heated corrugated rollers, efficient discharge of condensed water and uniform diffusion of steam are achieved, and the problems of temperature difference of corrugated rollers and condensate accumulation are solved, and production efficiency and energy-saving effects are improved.
Patent Information
- Application Number
- CN202422025343.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing steam-heated corrugated rollers have large temperature differences on both sides of the corrugated rollers, inconsistent overall expansion, and incomplete condensate water, resulting in high defect rate and large high-temperature steam consumption.
A steam heating corrugated roller is designed. By setting a drainage tank and a drainage channel at the connection between the cylinder and the first shaft head, the steam pipe is directly transmitted to the intermediate position inside the cylinder and diffuses, and efficient discharge of condensate water is achieved by combining the drainage tank and the connection channel.
Effectively reduce the temperature difference between the two sides of the corrugated roller, improve expansion consistency, reduce defective rates, save energy, avoid deformation of the corrugated roller due to temperature difference, and improve heat transfer efficiency.
Smart Images
Figure CN223161461U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of corrugated paper heating equipment, in particular to a steam heating corrugating roll. Background Art
[0002] The corrugating roll is one of the essential components in the equipment for processing corrugated paperboard. The corrugated base paper is heated by a pair of upper and lower corrugating rolls and rolled into a wavy corrugated paper, which is then coated and laminated into a single-sided corrugated paperboard. The corrugating roll is generally heated in three forms: electric heating, oil heating, and steam heating. Among them, steam heating is widely accepted and used by customers for a long time because of its low cost, stable heat source, and good safety performance.
[0003] As Figure 1 shown, in the traditional steam heating corrugating roll, high-temperature steam generally enters the corrugating roll from the operating side 1' and gradually fills the entire internal cavity 2', causing the temperature of the corrugating roll to rise. When the high-temperature steam passes through the corrugating roll, it will condense and drip into the internal cavity 2' to form condensate, and then the condensate is continuously discharged through the siphon 3' by the steam pressure. However, the following problems will occur when using the above corrugating roll:
[0004] (1) Since the distance for the high-temperature steam to diffuse from the operating side 1' to the drive side 4' is relatively long, and the heat loss of the high-temperature steam is relatively large during the diffusion process, the temperature of the operating side 1' is higher than that of the drive side 4'. During normal production, the temperature difference between the two sides reaches about 5°C, resulting in inconsistent expansion of the entire corrugating roll, and thus the phenomenon of poor adhesion between the base paper and the corrugating roll will occur, ultimately leading to an increase in the defective rate of the corrugated paper and serious losses.
[0005] (2) When using the siphon 3' to absorb the condensate, since there must always be a certain gap between the siphon 3' and the inner wall of the internal cavity 2', the condensate 5' located below the mouth of the siphon 3' cannot be discharged by the siphon 3'. A certain amount of condensate 5' will always accumulate at the bottom of the internal cavity 2' of the corrugating roll. The existence of the condensate 5' will, on the one hand, hinder the heat transfer efficiency of the steam, thereby increasing the usage amount of the high-temperature steam. On the other hand, when the corrugating roll stops rotating, the condensate 5' will accumulate at the bottom of the internal cavity 2', while the high-temperature steam is located in the upper part of the internal cavity 2'. The corrugating roll will be deformed and bent due to the temperature difference between the upper and lower parts, resulting in a section of cardboard waste when the corrugating roll resumes operation until the entire roll body of the corrugating roll is gradually heated evenly and the deformation is restored and eliminated before normal production can resume.
[0006] Therefore, it is necessary to provide a technical solution to solve the above problems. Content of the Utility Model
[0007] The purpose of the present utility model is to provide a steam-heated corrugating roll, which can solve the technical problems in the prior art, such as large temperature difference on both sides of the corrugating roll, inconsistent overall expansion, and incomplete drainage of condensed water, resulting in high defect rate and large consumption of high-temperature steam.
[0008] In order to solve the above technical problems, the present utility model adopts the following technical solutions:
[0009] A steam-heated corrugating roll includes a cylinder body, a first shaft head and a second shaft head. The first shaft head and the second shaft head are respectively connected to the inner walls at both ends of the cylinder body. A drainage groove is recessed in the inner wall of the cylinder body where it is connected to the first shaft head. A drainage channel is provided through the middle of the first shaft head. Several connecting channels for communicating the drainage groove and the drainage channel are also provided in the first shaft head. A steam pipe is provided in the drainage channel, and one end of the steam pipe extends into the interior of the cylinder body.
[0010] Further, one end of the steam pipe extends to the middle position inside the cylinder body.
[0011] Further, a fixing mechanism for fixing the steam pipe is also provided in the drainage channel. The fixing mechanism includes a fixing baffle. The fixing baffle is arranged at one end of the drainage channel close to the cylinder body. One end of the steam pipe penetrates through the fixing baffle and extends into the interior of the cylinder body.
[0012] Further, the fixing mechanism further includes a fixing ring. The fixing ring is arranged at the end of the drainage channel far from the cylinder body. The other end of the steam pipe is inserted into the fixing ring. Several water passing holes are provided on the wall of the fixing ring.
[0013] Further, the water passing holes include inner water passing holes arranged from the inner surface of the ring wall to the outside and outer water passing holes arranged from the outer surface of the ring wall to the inside. The inner water passing holes and the outer water passing holes are alternately arranged in sequence along the ring wall.
[0014] Further, each connecting channel includes a connecting groove and a connecting through hole. The connecting groove is arranged on the outer surface of the side wall of the first shaft head, and the connecting groove communicates with the drainage groove. The connecting through hole is opened at the bottom of the connecting groove, and the connecting through hole penetrates through the side wall and communicates with the drainage channel.
[0015] Further, along the direction from the first shaft head to the cylinder body, the drainage channel is sequentially provided with a small-diameter section, a transition section and a large-diameter section. The connecting through hole is arranged at the position of the side wall corresponding to the transition section.
[0016] Further, a plurality of connecting channels are provided, and the plurality of connecting channels are uniformly distributed along the side wall of the first shaft head.
[0017] Further, a rotary joint is connected to the end of the first shaft head away from the cylinder body. An inner cavity communicating with the drainage channel is provided in the rotary joint. A steam inlet pipe is arranged in the inner cavity. A steam inlet and a condensate outlet communicating with the inner cavity are further provided on the rotary joint. One end of the steam inlet pipe is communicated with the steam inlet, and the other end is inserted into the steam pipe.
[0018] The beneficial effects of the present utility model are as follows:
[0019] (1) By providing a steam pipe in the drainage channel, and one end of the steam pipe extends into the interior of the cylinder body. The external high-pressure steam supply mechanism can directly transmit steam into the interior of the cylinder body through the steam pipe. Preferably, one end of the steam pipe extends to the middle position inside the cylinder body. In this way, the steam can be directly transmitted to the middle position inside the cylinder body, and then diffused from the middle position to both ends of the cylinder body. Compared with the traditional way that high-temperature steam directly enters the cylinder body from one end of the operation side, the diffusion distance is effectively reduced, thereby effectively reducing the temperature difference between both sides of the corrugating roll, improving the overall expansion consistency of the corrugating roll, ensuring good overall fitting between the corrugating roll and the base paper, and greatly reducing the defective rate of the corrugated paper.
[0020] (2) Since a drainage groove is recessed in the inner wall where the cylinder body is connected to the first shaft head, the condensate in the cylinder body will flow into the drainage groove. And because the drainage groove communicates with the drainage channel through the connecting channel, and high-temperature steam is continuously introduced into the cylinder body, the condensate is pushed by the pressure of the high-temperature steam, enters the connecting channel from the drainage groove, and finally enters the drainage channel and is discharged outwards. This solves the problem that in the traditional way of using a siphon to drain condensate, a certain amount of condensate always accumulates at the bottom of the inner cavity of the corrugating roll. On the one hand, it can improve the heat transfer efficiency of the steam and save energy. On the other hand, it also avoids the deformation and bending of the corrugating roll due to the temperature difference between the upper and lower parts, effectively reducing the scrap rate. Description of the Drawings
[0021] Figure 1 It is a schematic structural diagram of a traditional steam-heated corrugating roll.
[0022] Figure 2 It is a schematic overall structural diagram of the steam-heated corrugating roll of the present utility model.
[0023] Figure 3 It is a schematic cross-sectional structural diagram of the steam-heated corrugating roll of the present utility model.
[0024] Figure 4 For the present utility model Figure 3 The enlarged structural diagram at A in it.
[0025] Figure 5 For the present utility model Figure 3 is a schematic enlarged structure view of the position B in the present utility model.
[0026] Figure 6 is a partial structure schematic view of the steam heating corrugating roll of the present utility model.
[0027] Figure 7 For the present utility model Figure 6 is a schematic enlarged structure view of the position C in the present utility model.
[0028] Figure 8 is a schematic cross-sectional structure view of the first shaft head of the present utility model.
[0029] Figure 9 is a schematic structure view of the fixing ring of the present utility model.
[0030] Explanation of reference numerals:
[0031] 1 - Cylinder body; 2 - First shaft head; 21 - Side wall; 3 - Second shaft head; 4 - Drainage groove; 5 - Drainage channel; 51 - Small-diameter section; 52 - Transition section; 53 - Large-diameter section; 6 - Connecting channel; 61 - Connecting groove; 62 - Connecting through-hole; 71 - Fixed baffle; 72 - Fixing ring; 721 - Inner water-passing hole; 722 - Outer water-passing hole; 8 - Steam pipe; 9 - Rotary joint; 91 - Inner cavity; 92 - Steam inlet; 93 - Condensate outlet; 10 - Steam inlet pipe. Detailed implementation manners
[0032] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the implementation manners does not limit the present utility model.
[0033] As Figures 1 to 9 shown, a steam heating corrugating roll provided by the present utility model includes a cylinder body 1, a first shaft head 2 and a second shaft head 3. The first shaft head 2 and the second shaft head 3 are respectively connected to the inner walls at both ends of the cylinder body 1. A drainage groove 4 is recessed in the inner wall of the cylinder body 1 where it is connected to the first shaft head 2. A drainage channel 5 is disposed through the middle of the first shaft head 2. A plurality of connecting channels 6 for communicating the drainage groove 4 and the drainage channel 5 are further disposed in the first shaft head 2. A steam pipe 8 is disposed in the drainage channel 5, and one end of the steam pipe 8 extends into the interior of the cylinder body 1. Specifically, the first shaft head 2 is the operation side, the second shaft head 3 is the driving side, and the steam pipe 8 is connected to an external high-pressure steam supply mechanism.
[0034] In this embodiment, a steam pipe 8 is arranged in the drainage channel 5, and one end of the steam pipe 8 extends into the interior of the cylinder body 1. The external high-pressure steam supply mechanism can directly transmit steam into the interior of the cylinder body 1 through the steam pipe 8. Preferably, one end of the steam pipe 8 extends to the middle position inside the cylinder body 1. In this way, the steam can be directly transmitted to the middle position inside the cylinder body 1 and then spread from the middle position to both ends of the cylinder body 1. Compared with the traditional way that high-temperature steam directly enters the cylinder body 1 from one end of the operation side, the diffusion distance is effectively reduced, thereby effectively reducing the temperature difference between both sides of the corrugating roll, improving the overall expansion consistency of the corrugating roll, ensuring good overall fitting between the corrugating roll and the base paper, and greatly reducing the defective rate of the corrugated paper. In addition, since a drainage groove 4 is recessed at the inner wall where the cylinder body 1 is connected to the first shaft head 2, the condensed water in the cylinder body 1 will flow into the drainage groove 4. And because the drainage groove 4 is communicated with the drainage channel 5 through the connection channel 6, and high-temperature steam is continuously introduced into the cylinder body 1, the condensed water is pushed by the pressure of the high-temperature steam, enters the connection channel 6 from the drainage groove 4, and finally enters the drainage channel 5 and is discharged outwards, solving the problem that a certain amount of condensed water always accumulates at the bottom of the inner cavity of the corrugating roll in the traditional way of using a siphon to drain the condensed water. On the one hand, it can improve the heat transfer efficiency of the steam and save energy. On the other hand, it also avoids the corrugating roll from deforming and bending due to the temperature difference between the upper and lower parts, effectively reducing the reject rate.
[0035] Further, referring to the attached Figure 3 and 4 In addition, a fixing mechanism for fixing the steam pipe 8 is further arranged in the drainage channel 5. The fixing mechanism includes a fixing baffle 71. The fixing baffle 71 is arranged at one end of the drainage channel 5 close to the cylinder body 1. One end of the steam pipe 8 penetrates through the fixing baffle 71 and extends into the interior of the cylinder body 1. In this embodiment, by arranging the fixing mechanism, the steam pipe 8 can be suspended in the drainage channel 5, that is, there is a gap between any part of the outer surface of the steam pipe 8 and the surface of the drainage channel 5, which is beneficial to the discharge of condensed water from the gap between the two. Specifically, both the fixing baffle and the drainage channel 5, as well as the fixing baffle and the steam pipe 8, are hermetically connected. On the one hand, it prevents the steam in the cylinder body 1 from escaping from the fixing baffle, causing waste. On the other hand, it prevents the condensed water from flowing back into the cylinder body 1 from the drainage channel 5.
[0036] Further, referring to the attached Figure 5 and 9, the fixing mechanism further includes a fixing ring 72, which is arranged at one end of the drainage channel 5 away from the cylinder body 1. The other end of the steam pipe 8 is inserted into the fixing ring 72, and a plurality of water passing holes are arranged on the ring wall of the fixing ring 72. In this embodiment, since the length of the steam pipe 8 is relatively long, in order to ensure the stable fixing of the steam pipe 8, a fixing ring 72 is arranged at the other end of the steam pipe 8. The steam pipe 8 is fixed by the cooperation of the fixing ring 72 and the fixing baffle 71, and water passing holes are also formed in the fixing ring 72. The condensed water in the drainage channel 5 is discharged outward through the water passing holes.
[0037] Further, referring to the appendix Figure 9 , the water passing holes include inner water passing holes 721 arranged from the inner surface of the ring wall outward and outer water passing holes 722 arranged from the outer surface of the ring wall inward. The inner water passing holes 721 and the outer water passing holes 722 are alternately arranged along the ring wall in sequence. In this embodiment, by alternately arranging the inner water passing holes 721 and the outer water passing holes 722 on the ring wall of the fixing ring 72, on the one hand, the position on the ring wall where the outer water passing holes 722 are not arranged can be connected to the surface of the drainage channel 5, and on the other hand, the inner water passing holes 721 and the outer water passing holes 722 can increase the drainage area and prevent the fixing ring 72 from hindering the drainage speed of the condensed water.
[0038] Further, referring to the appendix Figure 4 , each connecting channel 6 includes a connecting groove 61 and a connecting through hole 62. The connecting groove 61 is arranged on the outer surface of the side wall 21 of the first shaft head 2, and the connecting groove 61 communicates with the drainage groove 4. A connecting through hole 62 is formed at the bottom of the connecting groove 61, and the connecting through hole 62 penetrates through the side wall 21 and communicates with the drainage channel 5. Specifically, the outer surface of the side wall 21 of the first shaft head 2 is in close contact with the bottom surface of the drainage groove 4 in the cylinder body 1. Thus, a water storage space is formed between the connecting groove 61 and the drainage groove 4. The condensed water in the cylinder body 1 flows into the water storage space, and then under the pressure of the high-temperature steam, the condensed water enters the drainage channel 5 along the connecting through hole 62, successfully completing the drainage.
[0039] Further, along the direction from the first shaft head 2 to the cylinder body 1, the drainage channel 5 is sequentially provided with a small-diameter section 51, a transition section 52, and a large-diameter section 53. The connecting through hole 62 is arranged at a position corresponding to the transition section 52 of the side wall 21. Specifically, the fixing baffle 71 is arranged at the large-diameter section 53. In this embodiment, by arranging the connecting through hole 62 in the transition section 52, there is a relatively large space to accommodate the condensed water flowing in from the connecting through hole 62, preventing the pressure in the drainage channel 5 from increasing due to the too small accommodation space for the condensed water and hindering the discharge of the condensed water from the cylinder body 1.
[0040] Further, a plurality of connecting channels 6 are provided, and the plurality of connecting channels 6 are evenly distributed along the side wall 21 of the first shaft head 2. In this embodiment, by evenly arranging the plurality of connecting channels 6, it is helpful for the condensate water in the cylinder body 1 to be discharged through the plurality of connecting channels 6 during the rotation of the corrugating roll.
[0041] Further, referring to the attached Figure 5 , one end of the first shaft head 2 away from the cylinder body 1 is connected to a rotary joint 9. An inner cavity 91 communicating with the drainage channel 5 is formed in the rotary joint 9. A steam inlet pipe 10 is arranged in the inner cavity 91. A steam inlet 92 and a condensate water outlet 93 communicating with the inner cavity 91 are further formed in the rotary joint 9. One end of the steam inlet pipe 10 is communicated with the steam inlet 92, and the other end is inserted into the steam pipe 8.
[0042] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.
Claims
1. A steam-heated corrugating roll, comprising a cylinder body (1), a first shaft head (2) and a second shaft head (3), wherein the first shaft head (2) and the second shaft head (3) are respectively connected to the inner walls of both ends of the cylinder body (1); characterized in that: At the inner wall where the cylinder body (1) is connected to the first shaft head (2), a drainage groove (4) is recessed. A drainage channel (5) is disposed through the middle of the first shaft head (2). A plurality of connecting channels (6) for communicating the drainage groove (4) and the drainage channel (5) are also provided in the first shaft head (2); a steam pipe (8) is disposed in the drainage channel (5), and one end of the steam pipe (8) extends into the interior of the cylinder body (1).
2. The steam-heated corrugating roll according to claim 1, wherein: One end of the steam pipe (8) extends to the middle position inside the cylinder body (1).
3. The steam-heated corrugating roll according to claim 1, wherein: A fixing mechanism for fixing the steam pipe (8) is further disposed in the drainage channel (5). The fixing mechanism includes a fixing baffle (71). The fixing baffle (71) is disposed at one end of the drainage channel (5) close to the cylinder body (1). One end of the steam pipe (8) penetrates through the fixing baffle (71) and extends into the interior of the cylinder body (1).
4. The steam-heated corrugating roll according to claim 3, wherein: The fixing mechanism further includes a fixing ring (72). The fixing ring (72) is disposed at one end of the drainage channel (5) far from the cylinder body (1). The other end of the steam pipe (8) is inserted into the fixing ring (72). A plurality of water passing holes are disposed on the ring wall of the fixing ring (72).
5. The steam-heated corrugating roll according to claim 4, wherein: The water passing holes include inner water passing holes (721) arranged from the inner surface of the ring wall to the outside and outer water passing holes (722) arranged from the outer surface of the ring wall to the inside. The inner water passing holes (721) and the outer water passing holes (722) are alternately arranged in sequence along the ring wall.
6. The steam-heated corrugating roll according to claim 1, characterized in that: Each of the connecting channels (6) includes a connecting groove (61) and a connecting through hole (62). The connecting groove (61) is disposed on the outer surface of the side wall (21) of the first shaft head (2), and the connecting groove (61) communicates with the drainage groove (4). A connecting through hole (62) is opened at the bottom of the connecting groove (61), and the connecting through hole (62) penetrates through the side wall (21) and communicates with the drainage channel (5).
7. The steam-heated corrugating roll according to claim 6, characterized in that: Along the direction from the first shaft head (2) to the cylinder body (1), the drainage channel (5) is sequentially provided with a small diameter section (51), a transition section (52), and a large diameter section (53). The connecting through hole (62) is disposed at a position corresponding to the transition section (52) of the side wall (21).
8. The steam-heated corrugating roll according to claim 1, wherein: A plurality of the connecting channels (6) are provided, and the plurality of connecting channels (6) are evenly distributed along the side wall (21) of the first shaft head (2).
9. The steam-heated corrugating roll according to any one of claims 1-8, characterized in that: A rotary joint (9) is connected to one end of the first shaft head (2) far from the cylinder body (1). An inner cavity (91) communicating with the drainage channel (5) is opened in the rotary joint (9). A steam inlet pipe (10) is disposed in the inner cavity (91). A steam inlet (92) and a condensate outlet (93) communicating with the inner cavity (91) are further opened on the rotary joint (9). One end of the steam inlet pipe (10) communicates with the steam inlet (92), and the other end is inserted into the steam pipe (8).