Energy-saving hot pressing device for high-strength corrugated paper production

Abstract

The utility model relates to paperboard processing technical field, concretely relates to a kind of energy-saving hot-pressing device for high-strength corrugated paper production, it includes: rack, the outer wall of the rack is fixedly connected with support plate symmetrically, it is characterized in that, the inner wall of the support plate is equipped with hot-pressing mechanism. Through heat conduction fin, increase the contact area of hot steam and roll wall, accelerate heat conduction, avoid local temperature deficiency, while the inclined surface of inside wall two sides high middle low guides condensate to water collecting tank, cooperate with water suction pipe and remove condensate, prevent condensate heat absorption and lead to corrugated roll temperature fluctuation, it is favorable to reduce heat loss, through air pipe, low-temperature waste heat steam after releasing heat in corrugated roll, through air pipe and external pipeline and import hot-pressing roller in bonding stage, as auxiliary heat source, it is favorable to reduce the dependence of hot-pressing roller on new hot steam, realize heat one-time heat production, twice utilization.

Description

Technical Field

[0001] This utility model relates to the field of paperboard processing technology, specifically to an energy-saving hot pressing device for the production of high-strength corrugated paper. Background Technology

[0002] In the hot pressing production of high-strength corrugated paper, the existing hot pressing equipment's corrugated rollers are mostly of ordinary hollow structure. The smooth inner wall results in a small contact area between hot steam and the roller wall, leading to low heat transfer efficiency. At the same time, the condensate generated by the hot steam contacting the roller wall is difficult to collect and drain, and easily forms a water film on the roller wall, hindering heat transfer. Furthermore, the condensate absorbs heat, causing temperature fluctuations in the corrugated roller and increasing heat loss.

[0003] Therefore, this utility model discloses an energy-saving hot pressing device for the production of high-strength corrugated paper. By setting a circumferential array of heat-conducting fins on the inner wall of the corrugated roll to increase the heat contact area, the device uses the inclined surface of the inner wall, which is high on both sides and low in the middle, to guide the condensate to the water collection tank. The condensate is then drained away with the suction pipe, avoiding heat loss and temperature fluctuations. At the same time, the waste heat steam discharged from the corrugated roll is introduced into the hot pressing roll of the bonding stage for secondary utilization, thus meeting the energy-saving requirements of the paperboard processing industry for corrugated paper hot pressing devices. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: an energy-saving hot-pressing device for the production of high-strength corrugated paper, comprising: a frame, with a support plate symmetrically fixedly connected to the outer wall of the frame, and a hot-pressing mechanism provided on the inner wall of the support plate; the hot-pressing mechanism includes corrugated rollers, which are linearly arrayed along the inner wall of the support plate and their outer walls mesh with each other; a limit ring is symmetrically fixedly connected to the outer wall of the rotating shaft of the corrugated roller; the corrugated rollers are hollow rollers; heat-conducting fins are symmetrically fixedly connected to the inner wall of the corrugated rollers, which are circumferentially arrayed along the inner wall of the corrugated rollers; the inner wall of the corrugated rollers is an inclined surface that is higher on both sides and lower in the middle; a water collection groove is provided at the lowest point of the inner wall of the corrugated rollers; a guide tube is fixedly connected to the inner wall of the corrugated rollers through a bracket; and a water suction pipe is rotatably connected to the outer wall of the guide tube away from the limit ring. The outer wall of the corrugated roller shaft is rotatably connected to an air pipe. During use, this energy-saving hot pressing device is supported by a frame. The symmetrically fixed support plates on its outer wall provide a stable installation environment for the hot pressing mechanism. The corrugated rollers in the hot pressing mechanism are linearly arrayed along the inner wall of the support plate and their outer walls mesh with each other, ensuring that the core paper can be smoothly formed when it is pressed. The corrugated roller has a hollow structure. The limiting ring on the outer wall of the shaft is rotatably connected to the inner wall of the support plate, which can prevent the corrugated roller from deviating during operation. At the same time, the pulley group consists of pulleys and a drive belt, which can drive multiple sets of corrugated rollers to rotate synchronously, providing stable power for pressing. The heat-conducting fins distributed in a circumferential array on the inner wall of the corrugated roller increase the contact area between the hot steam and the roller wall. Since the inner wall of the air pipe is fixed with a conduit, it can serve as an air inlet for external hot steam to enter the corrugated roller. After entering the inside of the corrugated roller, the heat can be transferred to the outer wall of the corrugated roller through the heat-conducting fins.

[0005] Preferably, the outer wall of the limiting ring is rotatably connected to the inner wall of the support plate, the water suction pipe is located above the water collection tank, the outer wall of the air pipe is fixedly connected to the outer wall of the frame through the support frame, and the outer wall of the conduit is fixedly connected to the inner wall of the air pipe. During the heat transfer process of hot steam in the corrugated roll, condensate will be generated when it comes into contact with the roll wall with a lower temperature. Since the inner wall of the corrugated roll is designed as an inclined surface with high sides and low middle, the condensate can be guided by gravity to naturally collect in the water collection tank at the lowest point inside the roll. This helps to avoid the formation of a water film on the roll wall that hinders heat conduction. At the same time, the inner wall of the corrugated roll is rotatably connected to one end of the conduit fixed by the bracket, and the water suction pipe is located above the water collection tank. The end of the conduit away from the water suction pipe is fixedly connected to the external extraction device, which can quickly suck out the condensate collected in the water collection tank and discharge it outside the device. This prevents the condensate from absorbing heat and evaporating, thus avoiding the condensate from absorbing heat inside the roll and causing the temperature of the corrugated roll to drop. This also helps to stabilize the temperature of the outer wall of the corrugated roll within the range required for core paper corrugation.

[0006] Preferably, a pulley assembly is connected to the outer wall of one end of the corrugated roll. When the hot steam releases most of its heat inside the corrugated roll and the temperature decreases but still retains some residual heat, the inner wall of one side of the air pipe is not fixed with a conduit, which can serve as the outlet for hot steam to exit the corrugated roll. After the hot steam exits the corrugated roll, the device directly introduces the discharged low-temperature residual heat steam into the hot press roll in the bonding stage of high-strength corrugated paper production through an external connecting pipe. At this time, the heat of the residual heat steam can serve as an auxiliary heat source for the hot press roll, reducing the hot press roll's dependence on new hot steam and realizing a heat cycle mode of generating heat once and utilizing it twice, which is beneficial to reduce the overall heat source consumption of the device.

[0007] Preferably, the pulley assembly includes pulleys and a drive belt, and the outer walls of the corrugated rolls are fixedly connected to the inner walls of the pulleys. The entire device optimizes the structural design and heat circulation path of the corrugated rolls. On the one hand, it increases the heat conduction area by using heat-conducting fins, and with the help of inclined surfaces, water collection tanks, and water suction pipes, it can promptly discharge condensate, which helps reduce heat loss. On the other hand, through the cooperation of air pipes and external pipelines, the waste heat steam discharged from the corrugated rolls can be recovered to the hot press rolls for secondary use, forming a complete energy-saving closed loop. Ultimately, while ensuring the corrugating quality and bonding effect of high-strength corrugated paper, it helps reduce energy consumption in the production process.

[0008] The beneficial effects of this utility model are as follows:

[0009] 1. This utility model increases the contact area between hot steam and the roller wall by setting heat-conducting fins, which accelerates heat conduction and avoids local temperature deficiency. At the same time, the inclined surface of the inner wall, which is high on both sides and low in the middle, guides the condensate to the water collection tank. The condensate is drained away with the water suction pipe, which prevents the condensate from absorbing heat and causing temperature fluctuations in the corrugated roller, thus helping to reduce heat loss.

[0010] 2. By setting up an air pipe, the low-temperature waste heat steam released from the corrugated roller is introduced into the hot press roller in the bonding stage through the air pipe and external pipe as an auxiliary heat source, which helps to reduce the hot press roller's dependence on fresh hot steam and realizes heat generation once and utilization twice. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the back structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the hot pressing device of this utility model;

[0015] Figure 5yes Figure 4 A magnified view of a portion of point A in the middle.

[0016] In the diagram: 1. Frame; 2. Support plate; 3. Hot pressing mechanism; 4. Pulley assembly; 30. Corrugated roller; 31. Limiting ring; 32. Heat-conducting fins; 33. Inclined surface; 34. Water collection tank; 35. Conduit; 36. Suction pipe; 37. Air pipe. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] Example:

[0019] Please see Figure 1 - Figure 5 This utility model provides a technical solution: an energy-saving hot pressing device for the production of high-strength corrugated paper, comprising: a frame 1, with a support plate 2 symmetrically fixedly connected to the outer wall of the frame 1, and a hot pressing mechanism 3 provided on the inner wall of the support plate 2; the hot pressing mechanism 3 includes corrugated rollers 30, which are linearly arrayed along the inner wall of the support plate 2, and their outer walls mesh with each other; limit rings 31 are symmetrically fixedly connected to the outer wall of the rotating shaft of the corrugated rollers 30, and the corrugated rollers 30 are hollow rollers. The inner wall of the corrugated roller 30 is symmetrically and fixedly connected with heat-conducting fins 32, which are arranged in a circumferential array along the inner wall of the corrugated roller 30. The inner wall of the corrugated roller 30 is an inclined surface 33 with high sides and low middle. A water collection groove 34 is provided at the lowest point of the inner wall of the corrugated roller 30. A conduit 35 is fixedly connected to the inner wall of the corrugated roller 30 through a bracket. A water suction pipe 36 is rotatably connected to the outer wall of the end of the conduit 35 away from the limiting ring 31. An air pipe 37 is rotatably connected to the outer wall of the rotating shaft of the corrugated roller 30.

[0020] The outer wall of the limiting ring 31 is rotatably connected to the inner wall of the support plate 2. The water suction pipe 36 is located above the water collection tank 34. The outer wall of the air pipe 37 is fixedly connected to the outer wall of the frame 1 through the support frame. The outer wall of the conduit 35 is fixedly connected to the inner wall of the air pipe 37.

[0021] A pulley set 4 is connected to the outer wall of one end of the corrugated roller 30. The pulley set 4 includes a pulley and a drive belt. The outer wall of the corrugated roller 30 is fixedly connected to the inner wall of the pulley.

[0022] Working principle:

[0023] In use, this energy-saving hot pressing device is based on the frame 1, and the support plates 2, which are symmetrically fixed on the outer wall, provide a stable installation environment for the hot pressing mechanism 3. The corrugated rollers 30 in the hot pressing mechanism 3 are linearly arrayed along the inner wall of the support plate 2 and their outer walls mesh with each other to ensure smooth forming of the core paper during corrugation. The corrugated rollers 30 have a hollow structure, and the limiting ring 31 on the outer wall of the rotating shaft is rotatably connected to the inner wall of the support plate 2 to prevent the corrugated rollers 30 from shifting during operation. At the same time, the pulley group 4 consists of pulleys and a drive belt, which can drive multiple sets of corrugated rollers 30 to rotate synchronously, providing stable power for corrugation. The heat-conducting fins 32 distributed in a circumferential array on the inner wall of the corrugated rollers 30 increase the contact area between the hot steam and the roller wall. Since the inner wall of the air pipe 37 is fixed with a conduit 35, it can serve as an air inlet for external hot steam to enter the corrugated rollers 30. After the hot steam enters the interior of the corrugated rollers 30, the heat can be transferred to the outer wall of the corrugated rollers 30 through the heat-conducting fins 32.

[0024] During the heat transfer process of hot steam inside the corrugated roll 30, condensation will be generated when it comes into contact with the roll wall, which has a lower temperature. Since the inner wall of the corrugated roll 30 is designed as an inclined surface 33 with higher sides and lower middle, the condensation can be guided by gravity to naturally collect in the water collection tank 34 at the lowest point inside the roll. This helps to prevent the condensation from forming a water film on the roll wall and hindering heat conduction. At the same time, a water suction pipe 36 is rotatably connected to one end of a conduit 35 fixed by a bracket on the inner wall of the corrugated roll 30. The water suction pipe 36 is located directly above the water collection tank 34. The end of the conduit 35 away from the water suction pipe 36 is fixedly connected to an external extraction device, which can quickly suck out the condensation collected in the water collection tank 34 and discharge it outside the device. This prevents the condensation from absorbing heat and evaporating, thus avoiding the condensation from absorbing heat inside the roll and causing the temperature of the corrugated roll 30 to drop. This also helps to stabilize the temperature of the outer wall of the corrugated roll 30 within the range required for core paper corrugation.

[0025] After the hot steam releases most of its heat and the temperature decreases but still retains some residual heat in the corrugated roll 30, since the inner wall of the air pipe 37 on one side is not fixed with a conduit 35, it can be used as an outlet for hot steam to exit the corrugated roll 30. After the hot steam exits the corrugated roll 30, the device directly introduces the discharged low-temperature residual heat steam into the hot press roll in the bonding stage of high-strength corrugated paper production through an external connecting pipe. At this time, the heat of the residual heat steam can be used as an auxiliary heat source for the hot press roll, reducing the hot press roll's dependence on new hot steam and realizing a heat cycle mode of generating heat once and utilizing it twice, which is beneficial to reduce the overall heat source consumption of the device.

[0026] The entire device optimizes the structural design and heat circulation path of the corrugated roll 30. On the one hand, it increases the heat conduction area by using the heat-conducting fins 32, and in conjunction with the inclined surface 33, water collection tank 34 and water suction pipe 36, it can promptly discharge condensate, which helps to reduce heat loss. On the other hand, through the cooperation of the air pipe 37 and the external pipeline, the waste heat steam discharged from the corrugated roll 30 is recovered to the hot press roll for secondary use, forming a complete energy-saving closed loop. Ultimately, while ensuring the corrugating quality and bonding effect of high-strength corrugated paper, it helps to reduce energy consumption in the production process.

[0027] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An energy-saving hot pressing device for the production of high-strength corrugated paper, comprising: A frame (1) is provided with a support plate (2) symmetrically fixed to the outer wall of the frame (1), characterized in that a hot pressing mechanism (3) is provided on the inner wall of the support plate (2). The hot pressing mechanism (3) includes corrugated rollers (30), which are arranged in a linear array along the inner wall of the support plate (2), and the outer walls of the corrugated rollers (30) mesh with each other. Limiting rings (31) are symmetrically fixedly connected to the outer walls of the rotating shafts of the corrugated rollers (30). The corrugated rollers (30) are hollow rollers, and heat-conducting fins (32) are symmetrically fixedly connected to the inner walls of the corrugated rollers (30). The heat-conducting fins (32) are arranged along the inner walls of the corrugated rollers (30). The inner wall is arranged in a circular array. The inner wall of the corrugated roller (30) is an inclined surface (33) with high sides and low middle. A water collection groove (34) is provided at the lowest point of the inner wall of the corrugated roller (30). A guide tube (35) is fixedly connected to the inner wall of the corrugated roller (30) through a bracket. A water suction pipe (36) is rotatably connected to the outer wall of the end of the guide tube (35) away from the limiting ring (31). An air pipe (37) is rotatably connected to the outer wall of the rotating shaft of the corrugated roller (30).

2. The energy-saving hot pressing device for producing high-strength corrugated paper according to claim 1, characterized in that: The outer wall of the limiting ring (31) is rotatably connected to the inner wall of the support plate (2), the water suction pipe (36) is located above the water collection tank (34), the outer wall of the air pipe (37) is fixedly connected to the outer wall of the frame (1) through the support frame, and the outer wall of the conduit (35) is fixedly connected to the inner wall of the air pipe (37).

3. The energy-saving hot pressing device for producing high-strength corrugated paper according to claim 1, characterized in that: One end of the corrugated roller (30) is connected to a pulley group (4).

4. The energy-saving hot pressing device for producing high-strength corrugated paper according to claim 3, characterized in that: The pulley assembly (4) includes pulleys and a drive belt, and the outer wall of the corrugated roller (30) is fixedly connected to the inner wall of the pulley.

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