CN203320342U - Drying device of papermaking machine - Google Patents

Abstract

The utility model relates to a paper machine drying device. It includes a box body sealed around, several hot air rollers installed in the box body, a blower installed at the bottom of one side of the box body and connected to the hot air pipe, and an air extractor installed above the other side of the box body. There is a variable frequency motor Ⅰ for driving the air extractor to rotate, and a variable frequency motor Ⅱ for driving the blower to rotate is installed on the blower, a humidity sensor is installed at the connection between the air exhauster and the box, the variable frequency motor Ⅰ and the variable frequency motor II is respectively connected to the single-chip microcomputer through the frequency converter I and the frequency converter II, and the humidity sensor is connected to the single-chip microcomputer. The humidity sensor monitors the humidity value at the outlet in real time and feeds back to the single-chip microcomputer. The single-chip microcomputer adjusts the speed of the variable-frequency motor Ⅰ and the variable-frequency motor Ⅱ through the frequency converter Ⅰ and the frequency converter Ⅱ according to the humidity, thereby controlling the air extraction and blowing volume of the air extractor and blower. So as to achieve energy saving and reduce power consumption.

Description

Paper Machine Drying Unit

technical field

The utility model relates to the technical field of papermaking, in particular to a drying device.

Background technique

As we all know, after the paper is dehydrated by the press, there is still about 60%-70% of moisture, and then the finished product with a dryness of 92%-95% is dried by the drying device. The drying device uses dry hot air to make The moisture of the paper attached to the hot air roller turns into steam and is extracted by the air extractor, but the speed of the air extractor and the blower in the existing drying device is constant and cannot be changed according to the requirements, resulting in unnecessary consumption of electricity.

Contents of the invention

In order to overcome the deficiencies of the above technologies, the utility model provides an energy-saving paper machine drying device.

The technical solution adopted by the utility model to overcome its technical problems is:

The drying device of the paper machine consists of a closed box around, a number of hot air rollers installed in the box, a blower installed at the bottom of one side of the box and connected to the hot air pipe, and an air extractor installed above the other side of the box. The air extractor is equipped with a variable frequency motor I for driving the air extractor to rotate, the air blower is equipped with a variable frequency motor II for driving the blower to rotate, and a humidity sensor is installed at the connection between the air extractor and the box body, so The variable-frequency motor I and the variable-frequency motor II are connected to the single-chip microcomputer through the frequency converter I and the frequency converter II respectively, and the humidity sensor is connected to the single-chip microcomputer.

In order to realize the control of the intake air volume of the hot air, an electric control valve is installed on the above-mentioned hot air pipe, and the electric control valve is connected to a single-chip microcomputer.

The beneficial effects of the utility model are: the blower sends the dry hot air transported by the hot air pipeline into the box body, and the paper on the surface of the hot air roller generates water vapor under the action of the hot air, and the water vapor floats upward due to the high temperature, and passes through the upper The air extractor is pumped out, and the humidity sensor monitors the humidity value at the outlet in real time, and feeds back to the single-chip microcomputer. The single-chip microcomputer adjusts the speed of the frequency conversion motor Ⅰ and the frequency conversion motor Ⅱ through the frequency converter Ⅰ and frequency converter Ⅱ according to the humidity, so as to control the exhaust machine and the blower. Air extraction and blowing volume, so as to achieve energy saving and reduce power consumption.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the functional block diagram of the control system of the present utility model;

In the figure, 1. Cabinet 2. Hot air roller 3. Humidity sensor 4. Air extractor 5. Frequency conversion motor Ⅰ 6. Blower 7. Frequency conversion motor Ⅱ 8. Electric control valve 9. Hot air duct.

Detailed ways

Below in conjunction with accompanying drawing 1, accompanying drawing 2 the utility model is described further.

The drying device of the paper machine comprises a box body 1 sealed all around, a number of hot air rollers 2 installed in the box body 1, a blower 6 installed at the bottom of one side of the box body 1 and connected to the hot air pipeline 9, and a blower fan 6 installed in the box body 1. The air extractor 4 above the other side, the air extractor 4 is equipped with a variable frequency motor I 5 for driving the air extractor 4 to rotate, and the air blower 6 is equipped with a variable frequency motor II 7 for driving the air blower 6 to rotate, A humidity sensor 3 is arranged at the connecting part between the air extractor 4 and the box body 1, the variable frequency motor I 5 and the variable frequency motor II 7 are respectively connected to the single-chip microcomputer through the frequency converter I and the frequency converter II, and the humidity sensor 3 is connected to the single chip microcomputer . The blower 6 sends the dry hot air conveyed by the hot air pipe 9 into the box body 1, and the paper on the surface of the hot air roller 2 generates water vapor under the action of the hot air, and the water vapor floats upward due to the high temperature, and passes through the air exhauster above 4, the humidity sensor 3 monitors the humidity value at the outlet in real time, and feeds back to the single-chip microcomputer. The single-chip microcomputer adjusts the speed of the variable-frequency motor Ⅰ 5 and the variable-frequency motor Ⅱ 7 through the frequency converter Ⅰ and frequency converter Ⅱ according to the humidity, thereby controlling the air extractor 4 and the blower 6 air extraction volume and blowing volume, so as to achieve energy saving and reduce power consumption.

An electric control valve 8 is installed on the above-mentioned hot air pipeline 9, and the electric control valve 8 is connected to a single-chip microcomputer. According to the humidity value measured by the humidity sensor 3, the single-chip microcomputer controls the opening range of the electric control valve 8 to control the air intake of the dry hot air, avoid unnecessary waste of the dry hot air, and further improve the energy-saving effect.

Claims (2)

1. a drying device of paper machine, it is characterized in that: comprise the casing that surrounding is airtight (1), be installed on the some hot air rolls (2) in casing (1), the air exhauster (4) that is installed on casing (1) one side bottom and is connected in the air blast (6) of hot air duct (9) and is installed on casing (1) opposite side top, variable-frequency motor I (5) for driving air exhauster (4) to rotate is installed on described air exhauster (4), the variable-frequency motor II (7) of rotating for blower (6) is installed on described air blast (6), described air exhauster (4) is provided with humidity sensor (3) with casing (1) connecting portion, described variable-frequency motor I (5) and variable-frequency motor II (7) are connected in single-chip microcomputer by frequency converter I and frequency converter II respectively, described humidity sensor (3) is connected in single-chip microcomputer.

2. drying device of paper machine according to claim 1, it is characterized in that: electrically-controlled valve (8) is installed on described hot air duct (9), and described electrically-controlled valve (8) is connected in single-chip microcomputer.

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