Oil heating papermaking drying device

Abstract

The utility model relates to an oil heating papermaking drying device which comprises a high-temperature oil roller heated through hot oil, the downstream of an oil way of the high-temperature oil roller is connected with a drying assembly heated through hot oil, and the downstream of the drying assembly is connected with a low-temperature oil roller heated through hot oil. The high-temperature oil roller and the low-temperature oil roller are both rolled on a conveying device for conveying paper samples, the low-temperature oil roller is located at the upstream of the conveying device, and the high-temperature oil roller is located at the downstream of the conveying device. The high-temperature oil roller internally provided with high-temperature oil, the low-temperature oil roller internally provided with low-temperature hot oil and the drying assembly formed through the rotary coil pipe are arranged, gradual temperature rising of a wet paper sample is achieved, the situation that a large amount of water vapor is generated due to direct contact with the high-temperature oil roller is avoided, and the flatness of the paper sample is improved through two times of rolling. In addition, the drying process comprises a rolling hot drying mode and a hot air drying mode, the utilization rate of hot oil is increased, and the drying effect of independent rolling hot drying is enhanced through hot air drying.

Description

An oil-heated paper drying device Technical Field

[0001] This utility model relates to the field of papermaking technology, and in particular to an oil-heated papermaking drying device. Background Technology

[0002] Traditional paper drying methods use hot oil rollers for drying. When the paper sample has a high moisture content, direct contact with the high-temperature oil rollers can easily generate a large amount of water vapor instantaneously, which can damage the surface material of the high-temperature oil rollers and reduce their lifespan. Existing patents 1 (CN205641876U) and 2 (CN2401584Y) both use roller drying with built-in hot oil, and both will produce the above-mentioned problems. Summary of the Invention

[0003] The purpose of this application is to provide an oil-thermal paper drying apparatus, which aims to solve the problems existing in the prior art.

[0004] This application provides an oil-heated paper drying apparatus, including a high-temperature oil roller heated by hot oil, a drying component heated by hot oil connected downstream of the high-temperature oil roller, and a low-temperature oil roller heated by hot oil connected downstream of the drying component; both the high-temperature and low-temperature oil rollers are rolled onto a conveying device for conveying paper samples, with the low-temperature oil roller located upstream of the conveying device and the high-temperature oil roller located downstream of the conveying device; the drying component includes a rotary disc tube suspended above the conveying device; a fan is provided above the rotary disc tube, and the fan blows air onto the surface of the conveying device.

[0005] Furthermore, the oil inlet pipe of the high-temperature oil roller and the oil return pipe of the low-temperature oil roller constitute an oil circulation pipeline. The oil circulation pipeline passes through the boiler unit, and the oil in the oil circulation pipeline is heated by the boiler unit.

[0006] Furthermore, the rotary tube is composed of multiple S-shaped rotating pipelines. The rotary tube is fixed to the conveying device by a bracket, which has a height, so that the rotary tube is suspended above the conveying device.

[0007] Furthermore, a cover is fixedly connected to the bottom of the fan, which covers the lower part of the rotary tube and the rotary tube of the conveying device.

[0008] Furthermore, the enclosure is equipped with an inlet and an outlet corresponding to the conveying device, and baffle curtains are fixed at both the inlet and outlet.

[0009] The beneficial effects of this invention are as follows: This invention is equipped with a high-temperature oil roller with built-in high-temperature oil, a low-temperature oil roller with built-in low-temperature hot oil, and a drying assembly formed by a rotary disc tube. This allows for gradual heating of the wet paper sample, avoiding direct contact with the high-temperature oil roller and the generation of a large amount of water vapor. Furthermore, the double rolling process improves the flatness of the paper sample. In addition, the drying process includes both rolling heat drying and hot air drying modes, improving the utilization rate of hot oil, and hot air drying enhances the drying effect of rolling heat drying alone. Attached Figure Description

[0010] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 is a schematic diagram of the oil pipe circulation pipeline of this utility model.

[0012] Figure 3 is a schematic diagram of the cover box structure.

[0013] In the picture:

[0014] 1. High-temperature oil roller; 2. Drying assembly; 3. Low-temperature oil roller; 4. Conveying device; 5. Rotary disc tube; 6. Support; 7. Fan; 8. Boiler unit; 9. Cover box; 10. Baffle curtain; 11. Oil inlet pipe; 12. Oil return pipe. Detailed Implementation

[0015] 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.

[0016] As shown in Figure 1, an oil-heated paper drying device includes a high-temperature oil roller 1 heated by hot oil. Downstream of the high-temperature oil roller 1 is a drying assembly 2 heated by hot oil, and downstream of the drying assembly 2 is a low-temperature oil roller 3 heated by hot oil. Both the high-temperature oil roller 1 and the low-temperature oil roller 3 are pressed onto a conveying device 4 that transports paper samples. The low-temperature oil roller 3 is located upstream of the conveying device 4, and the high-temperature oil roller 1 is located downstream. The paper sample to be dried passes through the low-temperature oil roller 3 first, then the drying assembly 2, and finally the high-temperature oil roller 1 on the conveying device 4. This process gradually heats the paper sample, achieving both pressing and drying effects. Regarding the oil circuit, the inlet pipe 11 of the high-temperature oil roller 1 and the return pipe 12 of the low-temperature oil roller 3 constitute an oil circulation pipeline, as shown in Figure 2. The oil circulation pipeline passes through a boiler unit 8, which heats the oil within the oil circulation pipeline. Hot oil at around 85°C first passes through high-temperature oil roller 1. After heat exchange, the temperature of the hot oil drops to around 70°C. Then it enters the drying component 2. During the drying process, the temperature of the hot oil further decreases to around 50°C. Finally, it passes through low-temperature oil roller 3. During the process, the oil temperature gradually decreases. The low-temperature hot oil that comes out of the low-temperature oil roller 3 is reheated by the boiler unit 8 and then transported back to the high-temperature oil roller 1 to form an oil circulation.

[0017] Specifically, the drying assembly 2 includes a rotary tube 5, which is composed of multiple S-shaped rotating pipes. The rotary tube 5 is fixed to the conveying device 4 by a bracket 6, which suspends the rotary tube 5 above the conveying device 4. When the paper sample passes under the rotary tube 5 on the conveying device 4, it is heated and dried by the heat radiation generated by the rotary tube 5. Furthermore, a fan 7 is installed above the rotary tube 5, blowing air onto the surface of the conveying device 4 to accelerate the rate of moisture loss.

[0018] As shown in Figure 3, preferably, a cover 9 is fixedly connected to the bottom of the fan 7. The cover 9 covers the rotary tube 5 and the lower part of the rotary tube 5 of the conveying device 4, so that the drying assembly 2 and the corresponding part of the conveying device 4 are covered by the cover 9. This creates a high-temperature drying oven environment at the drying assembly 2, preventing insufficient drying temperature and an increase in the overall working environment temperature caused by the diffusion of hot air into the surrounding environment. In addition, a return air duct can be fixed to the cover 9 to connect to the air inlet of the fan 7 to achieve air circulation.

[0019] The cover box 9 has an inlet and an outlet corresponding to the conveying device 4, and a baffle curtain 10 is fixed at both the inlet and outlet. The baffle curtain 10 is composed of multiple naturally hanging baffles, which can isolate the internal and external environments of the cover box 9. The length of the baffle curtain 10 is controlled so that the baffle curtain 10 is at a certain distance from the surface of the conveying device 4, so as not to hinder the conveying of the paper pattern.

[0020] The above embodiments are not intended to limit the present invention. Unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention is not limited to the examples above. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention. Furthermore, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects.

Claims

1. An oil-heated paper drying apparatus, characterized in that, The system includes a high-temperature oil roller heated by hot oil, a drying assembly heated by hot oil connected downstream of the high-temperature oil roller, and a low-temperature oil roller heated by hot oil connected downstream of the drying assembly. Both the high-temperature and low-temperature oil rollers are pressed onto a conveying device for conveying paper samples, with the low-temperature oil roller located upstream of the conveying device and the high-temperature oil roller located downstream of the conveying device. The drying assembly includes a rotary disc tube suspended above the conveying device. A fan is installed above the rotary disc tube, and the fan blows air onto the surface of the conveying device.

2. The oil-thermal paper drying apparatus according to claim 1, characterized in that, The oil inlet pipe of the high-temperature oil roller and the oil return pipe of the low-temperature oil roller constitute an oil circulation pipeline. The oil circulation pipeline passes through the boiler unit, and the oil in the oil circulation pipeline is heated by the boiler unit.

3. The oil-thermal paper drying apparatus according to claim 1, characterized in that, The rotary tube is composed of multiple S-shaped rotating pipelines. The rotary tube is fixed to the conveying device by a bracket. The bracket has a height, which allows the rotary tube to be suspended above the conveying device.

4. The oil-thermal paper drying apparatus according to claim 1, characterized in that, The bottom of the fan is fixedly connected to a cover, which covers the lower part of the rotary tube and the rotary tube of the conveying device.

5. The oil-thermal paper drying apparatus according to claim 4, characterized in that, The enclosure is equipped with an inlet and an outlet corresponding to the conveying device, and baffle curtains are fixed at both the inlet and outlet.

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