A drying device applied to paper printing

Abstract

This utility model relates to a drying device for paper printing, belonging to the field of printing equipment. It includes a base, on which a conveyor motor, a conveyor shaft, and a conveyor belt are mounted. A housing is located above the base. Inside the housing, a fixing plate is horizontally positioned above the conveyor belt. A heating plate is horizontally fixed to the fixing plate below and near the conveyor belt. Both ends of the fixing plate are movably connected to the housing, allowing for height adjustment. This utility model features a reasonable structure, high drying efficiency, low energy consumption, environmental friendliness, and safety.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment, and in particular to a drying device for paper printing. Background Technology

[0002] Paper printing, as a crucial process in the paper processing industry, is widely used in the production of various paper products. However, the use of ink and glue during printing inevitably leads to a large amount of moisture and organic solvents adhering to the paper surface. If not removed in time, this can cause problems such as paper curling, deformation, and adhesion damage, seriously affecting product quality. Furthermore, the evaporation of moisture and organic solvents can deteriorate the air quality in the workshop, endangering the health of operators and potentially causing safety accidents such as fires.

[0003] Currently, the drying methods commonly used in the paper printing industry mainly include natural air drying, hot air circulation drying, electric heating drying, infrared drying, and microwave drying. While natural air drying is low-cost and pollution-free, it is limited by environmental temperature and humidity, resulting in extremely slow drying speeds, low production efficiency, and a large footprint, clearly failing to meet the high-efficiency requirements of modern large-scale industrial production. Hot air circulation drying achieves drying through heat exchange between hot air and paper; however, uneven heat distribution during circulation leads to inconsistent drying results, and the hot air contains incompletely evaporated moisture and organic solvents, which are easily reabsorbed onto the paper surface, affecting drying quality. Electric heating uses electric heating elements to directly generate heat, providing a stable heat source, but energy consumption is high. Furthermore, traditional electric heating equipment has a simple structure and cannot flexibly adjust the distance between the heating elements and the paper according to its thickness and dryness, resulting in low drying efficiency and potentially burning the paper. Infrared drying and microwave drying offer advantages such as fast drying speed and energy saving, but the equipment costs are high, the technical requirements for operators are high, and the long-term maintenance costs are significant, making them unaffordable for most small and medium-sized enterprises.

[0004] In addition, most existing drying equipment neglects to effectively treat the waste gas generated during the drying process. The waste gas, which contains a large amount of moisture, volatile organic solvents and ink dust, is directly discharged into the workshop or environment. This not only seriously pollutes the air, but may also cause safety accidents such as explosions due to the accumulation of organic solvents, posing a great threat to the production environment and the living environment of surrounding residents.

[0005] Existing paper printing drying technologies have many shortcomings, such as low drying efficiency, high energy consumption, uneven drying results, and inadequate waste gas treatment, making it difficult to meet the modern paper printing industry's demands for efficient, energy-saving, environmentally friendly, and safe drying processes. Therefore, there is an urgent need to develop a paper printing drying device with a reasonable structure, high drying efficiency, low energy consumption, environmental friendliness, and safety and reliability to overcome the deficiencies of existing technologies, improve the production level and market competitiveness of the paper printing industry, and promote the industry's sustainable development. Utility Model Content

[0006] The purpose of this invention is to provide a drying device for paper printing, which has the characteristics of reasonable structure, high drying efficiency, low energy consumption, environmental protection and safety, so as to overcome the defects of the prior art, improve the production level and market competitiveness of the paper printing industry, and promote the sustainable development of the industry.

[0007] To achieve the above objectives, the present invention provides a drying device for paper printing, comprising a base, a conveyor motor, a conveyor shaft and a conveyor belt on the base, a housing above the base, a fixing plate horizontally arranged on the inner side of the housing above the conveyor belt, a heating plate horizontally fixedly connected to the fixing plate below the conveyor belt, and the two ends of the fixing plate being movably connected to the housing so that the fixing plate can be raised and lowered.

[0008] Preferably, the device housing has vertical lifting grooves on the inner sidewalls of both sides of the fixed plate, and a lifting screw is vertically installed in the lifting groove. The lifting screw is connected to the end of the fixed plate, and the device housing has a lifting motor at the top, which is driven by the lifting screw.

[0009] Preferably, the equipment housing has a purification box at the top, the top of the fixed plate has a vertical telescopic air duct, the telescopic air duct connects to the bottom of the fixed plate and extends upward until it connects to the purification box, and the top of the purification box has an air-gathering box.

[0010] Preferably, the telescopic air duct is equipped with an air intake fan near the fixed plate.

[0011] Preferably, a preheating box is provided at the front of the equipment housing, a filter box is provided at the top of the preheating box, an air outlet pipe is connected to one side of the air gathering box, the air outlet pipe extends from the air gathering box to the filter box, and the interior of the filter box is connected to the interior of the preheating box.

[0012] Preferably, the filter box is slidably connected to a drawer for placing absorbent sponges, and the drawer contains absorbent sponges.

[0013] Preferably, the top of the device housing is provided with handrails on both sides of the purification box.

[0014] Preferably, the purification chamber is filled with an activated carbon adsorption layer and a HEPA high-efficiency filter air purification material.

[0015] Preferably, the heating plate uses a ceramic electric heating element.

[0016] Preferably, the absorbent sponge is made of high-density polyurethane foam material.

[0017] In summary, this utility model has the following beneficial technical effects: This utility model features a compact and rationally laid-out structure. The conveying system, composed of a conveyor motor, conveyor shaft, and conveyor belt, stably and efficiently transports the paper to be dried to the drying area, ensuring uniform movement of the paper during the drying process and improving the uniformity of the drying effect. The heating plate uses ceramic heating elements, which have excellent heat radiation performance and a smooth surface, enabling rapid heat generation and even transfer to the paper surface, effectively improving drying efficiency. Simultaneously, the transmission structure, composed of a lifting motor, lifting screw, and lifting slide, enables vertical lifting adjustment of the heating plate. The distance between the heating plate and the paper can be flexibly adjusted according to the drying requirements of paper of different thicknesses, preventing overheating damage due to excessive proximity and heat loss due to excessive distance, ensuring uniformity and consistency of the drying effect. It is highly adaptable and has a wide range of applications.

[0018] This invention features a waste gas purification and heat energy recycling system. It can collect and treat the waste gas generated during the drying process, effectively removing moisture, harmful substances, and particulate matter, preventing waste gas overflow from harming the working environment and the health of operators, thus meeting environmental protection requirements. Simultaneously, the purified hot gas, after being absorbed by the absorbent sponge 13, continues to flow into the preheating box to preheat the paper products about to enter the drying area. This reduces the temperature stress on the paper products under high-temperature drying, preventing curling and deformation, improving the stability of paper quality, and significantly increasing the heat energy recycling rate, thus reducing energy consumption and achieving excellent energy-saving and environmental protection effects.

[0019] This invention features handrails on both sides of the top of the equipment casing, facilitating the movement and transport of the entire drying unit by operators, thus improving its portability and flexibility. Furthermore, the drawer design for storing the absorbent sponge makes sponge replacement and maintenance convenient and efficient, eliminating the need to disassemble other parts, reducing equipment maintenance costs and downtime, and ensuring continuous and stable operation of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a drying device for paper printing according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the housing of a drying device for paper printing according to the present invention; Figure 3 This is a schematic diagram of the internal structure of the housing of a drying device for paper printing, used to demonstrate the air intake fan inside the telescopic air duct. Figure 4 This is a schematic diagram of a drawer for placing absorbent sponges and the structure of absorbent sponges in a drying device for paper printing according to this utility model. Figure 5 This is a cross-sectional view of the overall structure of a drying device for paper printing according to the present invention, taken along the direction of the conveyor belt.

[0021] Reference numerals: 1. Equipment base; 2. Equipment housing; 3. Lifting slide; 4. Fixing plate; 5. Heating plate; 6. Telescopic air duct; 7. Intake fan; 8. Purification box; 9. Air gathering box; 10. Air outlet pipe; 11. Filter box; 12. Drawer for placing absorbent sponge; 13. Absorbent sponge; 14. Preheating box; 15. Handrail; 16. Lifting motor; 17. Lifting screw; 18. Conveyor motor; 19. Conveyor shaft; 20. Conveyor belt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model discloses a drying device for paper printing, including a base 1, a housing 2, a conveyor motor 18, a conveyor shaft 19, and a conveyor belt 20 as main components. The base 1 serves as the basic support structure for the entire drying device. The conveyor motor 18 is fixedly mounted on its upper surface. The output shaft of the conveyor motor 18 is connected to the conveyor shaft 19 via a coupling. The conveyor shaft 19 is horizontally positioned on the base 1 and supported and fixed by bearing seats. The conveyor belt 20 is fitted onto the outer surface of the conveyor shaft 19. The conveyor belt 20 carries the paper to be dried and conveys it to the drying area. The housing 2 is bolted to the top of the base 1. The housing 2 has a box-like structure and contains a drying chamber.

[0024] A fixing plate 4 is horizontally arranged inside the equipment housing 2. The fixing plate 4 has a flat plate structure, and its two ends are movably connected to the inner walls of both sides of the equipment housing 2 through a sliding structure. Specifically, the equipment housing 2 has vertically formed lifting grooves 3 on the inner side walls of both sides of the fixing plate 4. The lifting grooves 3 have a vertical groove structure, and the ends of the fixing plate 4 are located in the lifting grooves 3. A lifting screw 17 is vertically threaded to the fixing plate 4 within the lifting grooves 3. A heating plate 5 is horizontally fixed below the fixing plate 4 near the conveyor belt 20. The heating plate 5 uses a ceramic electric heating element with a smooth surface and good heat radiation performance. It is connected to an external power supply and control switch through wires and can generate heat to dry the paper conveyed on the conveyor belt 20.

[0025] A lifting motor 16 is fixedly installed at one corner of the top of the equipment housing 2. The output shaft of the lifting motor 16 is vertically downward and connected to a lifting screw 17 via a coupling. The lifting screw 17 vertically penetrates the top wall of the equipment housing 2 and extends into the lifting slide 3, and is connected to the end of the fixed plate 4 via a threaded structure. When the lifting motor 16 is started, its output shaft drives the lifting screw 17 to rotate through the coupling. Due to the threaded transmission between the lifting screw 17 and the fixed plate 4, the fixed plate 4 can move vertically along the lifting slide 3, thereby adjusting the distance between the heating plate 5 and the paper on the conveyor belt 20 to meet the drying requirements of paper of different thicknesses, while precisely controlling the drying temperature and rate to improve the uniformity and consistency of the drying effect.

[0026] The vertically opened lifting slide 3 on the inner wall of the equipment housing 2, the fixed plate 4 inside which is movably connected, and the transmission structure connected to the lifting motor 16 through the lifting screw 17, realize the lifting and adjusting function of the heating plate 5. The distance between the heating plate 5 and the paper can be flexibly adjusted according to the thickness of different paper products and drying requirements to ensure the uniformity and consistency of the drying effect.

[0027] A telescopic air duct 6 is vertically fixed to the center of the top of the fixed plate 4. The telescopic air duct 6 adopts a corrugated sleeve structure, which has good telescopicity. Its lower end is sealed and connected to the top of the fixed plate 4, and its upper end extends upward and penetrates the top wall of the equipment housing 2, finally connecting to the purification box 8 installed on the top of the equipment housing 2. An air intake fan 7 is embedded inside the telescopic air duct 6 near the fixed plate 4. The air intake fan 7 is driven by a motor and draws the exhaust gas containing moisture and organic solvents generated during the drying process from below the fixed plate 4 into the telescopic air duct 6, and transports it into the purification box 8 for purification treatment, effectively preventing exhaust gas from overflowing and protecting the working environment and the health and safety of operators.

[0028] The purification chamber 8 has a box-like structure and is fixedly installed at the top center of the equipment housing 2. Its interior is filled with air purification materials such as an activated carbon adsorption layer and a HEPA high-efficiency filter to adsorb and filter harmful substances and particulate matter in the exhaust gas. The top of the purification chamber 8 is connected to a gas-gathering chamber 9 via a pipe. The gas-gathering chamber 9 also has a box-like structure with a hollow interior, used to collect the purified hot air. The hot air is then transported to the filter chamber 11 through an outlet pipe 10 located on one side of the chamber.

[0029] The exhaust pipe 10 is made of high-temperature resistant metal pipe, with one end connected to the side wall of the air-gathering box 9 and the other end extending into the filter box 11. The filter box 11 has a box-type structure, installed in front of the equipment housing 2 and located at the top of the preheating box 14. Its interior is a hollow structure, and a water-absorbing sponge placement drawer 12 is connected to it via a horizontal sliding structure. The water-absorbing sponge placement drawer 12 has a drawer-type structure and can be horizontally slid out or pushed in along the guide rail at the front opening of the filter box 11. It contains a water-absorbing sponge 13. The water-absorbing sponge 13 is made of high-density polyurethane foam material, which has good water absorption and air permeability. It can effectively absorb the moisture in the hot air, allowing the dry hot air to continue flowing into the preheating box 14 to preheat the paper products that are about to enter the drying area. This prevents the paper products from curling and deforming due to excessive temperature difference under the high-temperature drying of the electric heating plate 5, while improving the heat energy recycling rate and reducing energy consumption.

[0030] A pair of handrails 15 are symmetrically arranged on both sides of the top of the equipment housing 2. The handrails 15 are connected to the top of the equipment housing 2 by welding or bolting, which makes it easy for operators to move and transport the entire drying device.

[0031] In actual operation, the paper to be dried is placed on the conveyor belt 20. The conveyor motor 18 drives the conveyor shaft 19 to rotate, which in turn moves the conveyor belt 20, conveying the paper to the drying area below the heating plate 5. At this time, the heating plate 5 is energized to generate heat, drying the paper. Simultaneously, the intake fan 7 starts, drawing the exhaust gas generated during the drying process into the telescopic air duct 6 from below the fixed plate 4, and then sequentially transporting it to the purification box 8 and the air collection box 9 for purification and collection. The purified hot air enters the filter box 11 through the exhaust pipe 10. After being absorbed by the water-absorbing sponge 13, the dry hot air flows into the preheating box 14 to preheat the paper about to enter the drying area, preventing the paper from curling and deforming due to excessive temperature difference, while improving the recycling rate of heat energy and reducing energy consumption.

[0032] When it is necessary to replace the absorbent sponge 13, the operator can slide the absorbent sponge placement drawer 12 to pull it out from the front of the filter box 11, so as to conveniently carry out the replacement and maintenance of the absorbent sponge 13 and ensure the continuous and stable operation of the equipment.

[0033] The present invention provides a drying device for paper printing, which achieves efficient drying of paper, purification of waste gas and recycling of heat energy through the rational layout of various functional components and their interconnection and cooperation. It has the advantages of compact structure, convenient operation, energy saving and environmental protection, and can be widely used in the drying process of the paper printing industry.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drying apparatus for use in the printing of paper products, characterized in that, The device includes a base (1), on which a conveyor motor (18), a conveyor shaft (19) and a conveyor belt (20) are provided. A device housing (2) is provided above the base (1). A fixing plate (4) is provided horizontally above the conveyor belt (20) on the inner side of the device housing (2). An electric heating plate (5) is horizontally fixedly connected to the fixing plate (4) below the conveyor belt (20). Both ends of the fixing plate (4) are movably connected to the device housing (2) so that the fixing plate (4) can be raised and lowered.

2. A drying apparatus for use in the printing of paper products according to claim 1, wherein, The equipment housing (2) has vertical lifting grooves (3) on the inner sidewalls on both sides of the fixed plate (4). A lifting screw (17) is vertically installed in the lifting groove (3). The lifting screw (17) is connected to the end of the fixed plate (4). The equipment housing (2) has a lifting motor (16) at the top. The lifting motor (16) is connected to the lifting screw (17).

3. A drying apparatus for use in the printing of paper products according to claim 2, wherein, The equipment housing (2) has a purification box (8) on the top, and the top of the fixed plate (4) has a vertical telescopic air duct (6). The telescopic air duct (6) connects to the bottom of the fixed plate (4) and extends upward until it connects to the purification box (8). The top of the purification box (8) has an air gathering box (9).

4. A drying apparatus for use in the printing of paper products according to claim 3, wherein, The telescopic air duct (6) is equipped with an air intake fan (7) near the fixed plate (4).

5. A drying apparatus for use in the printing of paper products according to claim 4, wherein, A preheating box (14) is provided in front of the equipment housing (2). A filter box (11) is provided on the top of the preheating box (14). An air outlet pipe (10) is connected to one side of the gas gathering box (9). The air outlet pipe (10) extends from the gas gathering box (9) into the filter box (11). The interior of the filter box (11) is connected to the interior of the preheating box (14).

6. A drying apparatus for use in the printing of paper products according to claim 5, wherein, The filter box (11) is slidably connected to a water-absorbing sponge placement drawer (12), and the water-absorbing sponge placement drawer (12) is provided with a water-absorbing sponge (13).

7. A drying apparatus for use in the printing of paper products according to claim 6, wherein, The top of the equipment housing (2) is provided with handrails (15) on both sides of the purification box (8).

8. A drying apparatus for use in the printing of paper products according to claim 6, wherein, The purification box (8) is filled with an activated carbon adsorption layer and a HEPA high-efficiency filter air purification material.

9. A drying apparatus for use in the printing of paper products according to claim 6, wherein, The heating plate (5) uses a ceramic electric heating element.

10. The drying apparatus for printing on paper according to claim 6, wherein The absorbent sponge (13) is made of high-density polyurethane foam.

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