A drying device for a paper mill

Abstract

The utility model relates to paper mill equipment technical field, concretely is a kind of drying device for paper mill, including;The utility model is driven to move downward by the one end of electric control air cylinder with down-pressing pedestal, will make down-pressing pedestal drive down-pressing cylinder to move downward with rotating rod, will make down-pressing cylinder move to the side of transmission cylinder, and then make down-pressing cylinder to the raw material paper of transmission cylinder outer wall preliminary extrusion limit;Through air guide ventilation fan, hot air flow is entered into the inner chamber of air guide shell through the communicating groove, simultaneously air outlet fan operates, and then the controller controls circulating water pump to operate, and heat-conducting oil is injected in the pipeline of circulating water pump, and then circulating water pump drives heat-conducting oil in the pipeline to circulate, and then heat-conducting oil absorbs heat when circulating in pipe, when heat-conducting oil is injected into hollow shell through circulating water pipe, will make hollow shell temperature rise and preheat.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a drying equipment for paper mills. Background Technology

[0002] The drying unit in a paper mill is a key piece of equipment in the pulp and paper production process. Its main function is to quickly remove moisture from the wet paper web by heating, transforming the initially formed wet paper into finished paper with the required dryness. The unit usually consists of multiple drying cylinders or drums, drying tunnels, and a supporting ventilation system. It uses high-temperature airflow generated by steam, heat transfer oil, or electric heating to contact the wet paper, promoting the evaporation and discharge of moisture, thereby improving the drying efficiency and quality of the paper. The drying process requires precise control of temperature, speed, and tension to avoid paper shrinkage, deformation, or damage to strength, while also taking into account energy conservation and production efficiency, providing dry paper substrate that meets the process requirements for subsequent calendering, winding, and other processes. However, when existing drying equipment is in use, the lack of an efficient waste heat recovery system leads to a large amount of waste heat being lost with the exhaust air, resulting in high energy consumption of the drying equipment. At the same time, during the paper drying process, the existing drying equipment is not adaptable to paper of different thicknesses, and it is difficult to effectively clamp paper of different thicknesses and control the squeezing function.

[0003] Therefore, a drying device for paper mills is needed to improve the above-mentioned problems. Utility Model Content

[0004] To address the issue that paper mill drying equipment suffers from high energy consumption due to the lack of an efficient waste heat recovery system, resulting in significant waste heat loss during exhaust, this invention provides a drying device for paper mills to solve the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A drying device for a paper mill includes a mounting base, a controller mounted on the outer wall of the mounting base, a drive motor mounted on the outer wall of the mounting base, a transfer roller rotatably connected to one side of the drive motor and located on the inner wall opposite to the mounting base, and one end of the transfer roller connected to the drive shaft of the drive motor. A pressing component is installed on the inner wall opposite to the mounting base. A limiting groove is opened on the outer wall opposite to the mounting base. A waste heat utilization component is installed on one side of the pressing component and on the side wall of the mounting base. A heating and drying drum is rotatably connected to the inner wall of the mounting base. Multiple sets of heating and drying drums are provided and are respectively located on the inner wall opposite to the mounting base. The heating and drying drum is located on one side of the transfer drum. As a preferred embodiment of this utility model, the pressing component includes a fixed frame, which is installed on the outer wall of the mounting base. An electrically controlled cylinder is embedded in the top outer wall of the fixed frame. Two sets of electrically controlled cylinders are provided and are respectively located on the top outer wall of the fixed frame. One end of the electrically controlled cylinder passes through the fixed frame and extends into the inner cavity of the fixed frame to install a pressing base. A rotating rod is rotatably connected to the opposing inner walls of the pressing base.

[0006] As a preferred embodiment of this utility model, a pressing roller is installed on the outer wall of the rotating rod, wherein the rotating rod is provided in two sets and is located on the inner wall opposite to the pressing base, and the outer wall of the rotating rod is slidably connected to the inner wall of the limiting groove, and the pressing roller is located directly above the transmission roller.

[0007] As a preferred embodiment of this utility model, the waste heat utilization component includes an air guide shell, which is embedded in the outer wall of the mounting base. The cross-section of the air guide shell is L-shaped. The air guide shell is located directly above the heating and drying drum. A connecting groove is sequentially opened from left to right on the outer wall of the air guide shell, which is located directly above the heating and drying drum. An air guide ventilation fan is installed on the inner wall of the connecting groove.

[0008] As a preferred embodiment of this utility model, the air guide fan is provided in multiple sets and is located on the inner wall of the connecting groove, and a connecting seat is installed on the side wall of the air guide housing, wherein the connecting seat is provided in two sets and is located on the outer wall of the air guide housing.

[0009] As a preferred embodiment of this utility model, one end of the connecting seat penetrates through the air guide housing and extends to the inner wall of the air guide housing to install a surrounding pipe, wherein the surrounding pipe is located in the inner cavity of the air guide housing, and the other end of the connecting seat is equipped with a connecting pipe, one end of the connecting pipe is equipped with a circulating water pump, and one end of the surrounding pipe is connected to the outer wall of the circulating water pump.

[0010] As a preferred embodiment of this utility model, a circulating water pipe is installed at one end of the circulating water pump, wherein two sets of circulating water pipes are provided and are respectively located at the inlet and outlet of the circulating water pump, and a hollow shell is installed at one end of the circulating water pipe.

[0011] As a preferred embodiment of this utility model, the hollow housing is embedded in the port of the mounting base, the hollow housing is located on one side of the transmission roller, and an exhaust fan is installed on one side of the surrounding pipe and on the side wall of the air guide housing, wherein multiple sets of exhaust fans are provided and are respectively located on the side wall of the air guide housing.

[0012] As a preferred embodiment of this utility model, the controller is electrically connected to a drive motor, a heating and drying drum, an electrically controlled cylinder, a ventilator fan, a circulating water pump, and an exhaust fan via wires.

[0013] Compared with existing technologies, this invention enables the compression of paper of different thicknesses by setting a pressing component in the drying device used in paper mills. The controller controls the operation of the electric cylinder, which in turn drives the pressing base downward. This causes the pressing base to move downward via a rotating rod, which in turn moves the pressing roller downward. This causes the pressing roller to move to one side of the conveyor roller, thus initially compressing and limiting the raw paper on the outer wall of the conveyor roller. When the set parameters are reached, the operator turns off the controller. This solves the problem that existing drying devices are not adaptable to different paper thicknesses and are difficult to effectively clamp paper of different thicknesses and control the compression function during paper drying.

[0014] This invention enables the reuse of waste heat generated during the drying process in a paper mill by incorporating a waste heat recovery component. A ventilator guides hot air through a connecting slot into the inner cavity of the ventilator housing, while an exhaust fan operates simultaneously, creating airflow within the housing. A controller then activates a circulating water pump, injecting heat-conducting oil into its pipeline. This circulation of the oil allows it to absorb heat as it flows around the pipes. When the oil is injected into the hollow shell through the circulating water pipe, it raises the shell's temperature, preheating the raw paper inside. This process utilizes the waste heat generated by the device, solving the problem of high energy consumption in existing drying systems due to the lack of an efficient waste heat recovery system, which leads to significant waste heat loss during exhaust. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the right-side structure of this utility model; Figure 3 This is a schematic diagram of the heating and drying drum structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the air guide shell of this utility model; Figure 5 This utility model Figure 4 An enlarged schematic diagram of the structure at point A.

[0016] In the diagram: 1. Mounting base; 2. Controller; 3. Drive motor; 4. Transmission roller; 5. Pressing assembly; 501. Fixing frame; 502. Electric cylinder; 503. Pressing base; 504. Rotating rod; 505. Pressing roller; 6. Limiting slide; 7. Waste heat utilization assembly; 701. Air guide shell; 702. Connecting groove; 703. Air guide fan; 704. Connecting seat; 705. Circulating pipe; 706. Connecting pipe; 707. Circulating water pump; 708. Circulating water pipe; 709. Hollow shell; 710. Exhaust fan; 8. Heating and drying roller. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Example: Please refer to Figure 1-5 The drying device shown includes a mounting base 1, a controller 2 mounted on the outer wall of the mounting base 1, a drive motor 3 mounted on the outer wall of the mounting base 1, a transmission roller 4 rotatably connected to one side of the drive motor 3 and located on the inner wall opposite to the mounting base 1, and one end of the transmission roller 4 connected to the drive shaft of the drive motor 3. A pressing component 5 is installed on the inner wall opposite to the mounting base 1. A limiting groove 6 is opened on the outer wall opposite to the mounting base 1. A waste heat utilization component 7 is installed on one side of the pressing component 5 and on the side wall of the mounting base 1. A heating and drying drum 8 is rotatably connected to the inner wall of the mounting base 1. Multiple sets of heating and drying drums 8 are provided and are respectively located on the inner wall opposite to the mounting base 1. The heating and drying drum 8 is located on one side of the transfer drum 4. In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The pressing component 5 includes a fixed frame 501, which is mounted on the outer wall of the mounting base 1. An electric cylinder 502 is embedded in the top outer wall of the fixed frame 501. Two sets of electric cylinders 502 are provided and are located on the top outer wall of the fixed frame 501 respectively. One end of the electric cylinder 502 passes through the fixed frame 501 and extends into the inner cavity of the fixed frame 501 to install a pressing base 503. A rotating rod 504 is rotatably connected to the opposing inner wall of the pressing base 503. A pressing roller 505 is installed on the outer wall of the rotating rod 504. Two sets of rotating rods 504 are provided and are located on the opposing inner walls of the pressing base 503 respectively. The outer wall of the rotating rod 504 is slidably connected to the inner wall of the limiting groove 6. The pressing roller 505 is located directly above the transmission roller 4.

[0019] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The waste heat utilization component 7 includes an air guide housing 701, which is embedded in the outer wall of the mounting base 1. The air guide housing 701 has an L-shaped cross-section and is located directly above the heating and drying drum 8. A connecting groove 702 is sequentially formed on the outer wall of the air guide housing 701 from left to right, with the connecting groove 702 located directly above the heating and drying drum 8. Multiple sets of air guide fans 703 are installed on the inner wall of the connecting groove 702. Two sets of connecting seats 704 are installed on the side wall of the air guide housing 701, each located on the outer wall of the air guide housing 701. One end of each connecting seat 704 penetrates the air guide housing 701 and extends to the inner wall of the air guide housing 701, where a surrounding pipe is installed. 705, wherein the surrounding pipe 705 is located in the inner cavity of the air guide housing 701, the other end of the connecting seat 704 is equipped with a connecting pipe 706, one end of the connecting pipe 706 is equipped with a circulating water pump 707, and one end of the surrounding pipe 705 is connected to the outer wall of the circulating water pump 707. One end of the circulating water pump 707 is equipped with a circulating water pipe 708, wherein two sets of circulating water pipes 708 are provided and are respectively located at the inlet and outlet of the circulating water pump 707. One end of the circulating water pipe 708 is equipped with a hollow housing 709, which is embedded in the port of the mounting base 1. The hollow housing 709 is located on one side of the transmission roller 4. One side of the surrounding pipe 705 and on the side wall of the air guide housing 701 is equipped with an exhaust fan 710, wherein multiple sets of exhaust fans 710 are provided and are respectively located on the side wall of the air guide housing 701.

[0020] Based on the above structural features and connection relationships, a water storage tank is provided directly below the surrounding pipe 705 and on the inner wall of the air guide housing 701, and the water storage tank is located directly below the exhaust fan 710. The controller 2 is electrically connected to the drive motor 3, the heating and drying drum 8, the electric cylinder 502, the air guide fan 703, the circulating water pump 707, and the exhaust fan 710 via wires. This connection enables the device to be powered on, thereby allowing the controller 2 to control the operation of the drive motor 3, the heating and drying drum 8, the electric cylinder 502, the air guide fan 703, the circulating water pump 707, and the exhaust fan 710.

[0021] This solution is used in a paper mill drying device. During operation, raw paper is placed into the device, positioned on the outer wall of the conveyor roller 4. The controller 2 is then turned on, causing the drive motor 3 to operate. The drive shaft of the drive motor 3 drives the conveyor roller 4, which then conveys the raw paper. Subsequently, the controller 2 controls the heating and drying roller 8 to heat and dry the raw paper. Simultaneously, the controller 2 is turned on again, causing the electrically controlled cylinder 502 to operate, thereby activating the electrically controlled cylinder 502. One end of 2 drives the lower pressure base 503 to move downward, which causes the lower pressure base 503 to drive the lower pressure roller 505 to move downward via the rotating rod 504. This causes the lower pressure roller 505 to move towards one side of the transmission roller 4, thereby causing the lower pressure roller 505 to initially squeeze and limit the raw material paper on the outer wall of the transmission roller 4. When the set parameters are reached, the operator turns off the switch of controller 2, thus solving the problem that the existing drying device has insufficient adaptability to different thicknesses of paper during the paper drying process, making it difficult to effectively clamp paper of different thicknesses and control the squeezing function. By turning on the switch of controller 2, controller 2 controls the air guide fan 703 to operate. The air guide fan 703 guides the hot air generated by the rotating heating drying drum 8, causing the hot airflow to enter the inner cavity of the air guide housing 701 through the connecting groove 702. Simultaneously, controller 2 controls the air guide fan 703 to operate, causing the exhaust fan 710 to operate, thus creating airflow within the inner cavity of the air guide housing 701. Subsequently, when the airflow passes through the surrounding pipe 705, the surrounding pipe 705 absorbs the heat from the hot airflow. Meanwhile, controller 2... The circulating water pump 707 is operated, and heat transfer oil is injected into the pipeline of the circulating water pump 707. This causes the circulating water pump 707 to drive the heat transfer oil in the pipeline to circulate. As the heat transfer oil surrounds the pipe 705, it absorbs heat. When the heat transfer oil is injected into the hollow shell 709 through the circulating water pipe 708, it raises the temperature of the hollow shell 709, thereby preheating the raw material paper inside the hollow shell 709. This utilizes the waste heat of the device, thus solving the problem that existing drying devices, due to the lack of an efficient waste heat recovery system, result in a large amount of waste heat being lost with the exhaust air, leading to high energy consumption of the drying device.

[0022] The drive motor 3, heating and drying drum 8, electrically controlled cylinder 502, air guide fan 703, circulating water pump 707, exhaust fan 710, and controller 2 used in this utility model are all existing known electrical devices, and can all be purchased and used directly on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the drive motor 3, heating and drying drum 8, electrically controlled cylinder 502, air guide fan 703, circulating water pump 707, exhaust fan 710, and controller 2 will not be described in detail here.

[0023] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying device for a paper mill, comprising a mounting base (1), characterized in that: A controller (2) is installed on the outer wall of the mounting base (1), and a drive motor (3) is installed on the outer wall of the mounting base (1). A transmission roller (4) is rotatably connected to one side of the drive motor (3) and to the inner wall opposite to the mounting base (1), and one end of the transmission roller (4) is connected to the drive shaft of the drive motor (3). A pressing component (5) is installed on the inner wall opposite to the mounting base (1). A limiting groove (6) is opened on the outer wall opposite to the mounting base (1). A waste heat utilization component (7) is installed on one side of the pressing component (5) and on the side wall of the mounting base (1). A heating drying drum (8) is rotatably connected to the inner wall of the mounting base (1). Multiple sets of heating drying drums (8) are provided and are respectively located on the inner wall opposite to the mounting base (1). The heating drying drum (8) is located on one side of the transfer drum (4). The pressing component (5) includes a fixed frame (501), which is mounted on the outer wall of the mounting base (1). An electric cylinder (502) is embedded in the top outer wall of the fixed frame (501). Two sets of electric cylinders (502) are provided and are located on the top outer wall of the fixed frame (501). One end of the electric cylinder (502) passes through the fixed frame (501) and extends into the inner cavity of the fixed frame (501) to install a pressing base (503). A rotating rod (504) is rotatably connected to the inner wall of the pressing base (503) opposite to the pressing base (503).

2. A drying device for a paper mill according to claim 1, characterized in that: The rotating rod (504) is equipped with a pressing roller (505) on its outer wall. The rotating rod (504) is provided in two sets and is located on the inner wall opposite to the pressing base (503). The outer wall of the rotating rod (504) is slidably connected to the inner wall of the limiting groove (6). The pressing roller (505) is located directly above the transmission roller (4).

3. A drying apparatus for a paper mill according to claim 2, characterized in that: The waste heat utilization component (7) includes an air guide housing (701), which is embedded in the outer wall of the mounting base (1). The cross-section of the air guide housing (701) is L-shaped. The air guide housing (701) is located directly above the heating and drying drum (8). A connecting groove (702) is sequentially opened from left to right on the outer wall of the air guide housing (701). The connecting groove (702) is located directly above the heating and drying drum (8). An air guide ventilation fan (703) is installed on the inner wall of the connecting groove (702).

4. A drying apparatus for a paper mill according to claim 3, characterized in that: The air guide fan (703) is provided in multiple sets and is located on the inner wall of the connecting groove (702). The air guide housing (701) is provided with a connecting seat (704) on the side wall, wherein the connecting seat (704) is provided in two sets and is located on the outer wall of the air guide housing (701).

5. A drying apparatus for a paper mill according to claim 4, characterized in that: One end of the connecting seat (704) penetrates through the air guide housing (701) and extends to the inner wall of the air guide housing (701) where a surrounding pipe (705) is installed. The surrounding pipe (705) is located in the inner cavity of the air guide housing (701). The other end of the connecting seat (704) is equipped with a connecting pipe (706). One end of the connecting pipe (706) is equipped with a circulating water pump (707), and one end of the surrounding pipe (705) is connected to the outer wall of the circulating water pump (707).

6. A drying apparatus for a paper mill according to claim 5, characterized in that: One end of the circulating water pump (707) is equipped with a circulating water pipe (708), wherein the circulating water pipe (708) is provided in two sets and is located at the inlet and outlet of the circulating water pump (707) respectively, and a hollow shell (709) is installed at one end of the circulating water pipe (708).

7. A drying apparatus for a paper mill according to claim 6, characterized in that: The hollow housing (709) is embedded in the port of the mounting base (1). The hollow housing (709) is located on one side of the transmission roller (4). An exhaust fan (710) is installed on one side of the surrounding pipe (705) and on the side wall of the air guide housing (701). Multiple sets of exhaust fans (710) are provided and are located on the side wall of the air guide housing (701).

8. A drying apparatus for a paper mill according to claim 7, characterized in that: The controller (2) is connected to the drive motor (3), heating and drying drum (8), electric cylinder (502), air guide fan (703), circulating water pump (707) and exhaust fan (710) via wires, and the connection method is electrical connection.

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