Protection device for preventing arc-shaped rubber roller from being burnt

Abstract

The utility model discloses a protection device for preventing an arc-shaped rubber roller from being burnt, the protection device is arranged between a hot air box of a sizing machine and the arc-shaped rubber roller, the protection device comprises a negative pressure wind chamber and a positive pressure wind chamber, the bottom of the negative pressure wind chamber is provided with an inclined suction opening, and the bottom end of the suction opening is provided with a wind shield; an air blowing opening is formed in the bottom of the positive pressure air blowing box, and an air guide plate is installed at the air blowing opening and guides air to the position close to the top of the arc-shaped rubber roller; the negative-pressure air draft box is connected with the air draft driving shell through an air draft pipeline, the positive-pressure air draft box is connected with the air blowing driving shell through an air blowing pipeline, and the air draft driving shell and the air blowing driving shell are fixedly installed on the two sides of the gear box. According to the protection device provided by the utility model, the problem that the arc-shaped rubber roller is easy to burn and damage can be solved on the premise of not changing a paper guiding loop path, and waste heat recovery of high-temperature and high-humidity air can be realized.

Description

Technical Field

[0001] The utility model relates to a protective device for preventing an arc-shaped rubber roller from being burned, and belongs to the technical field of papermaking equipment. Background Art

[0002] After the sizing machine in the prior art has applied glue to the paper, it is necessary to use a hot air box to dry the glue layer in time.

[0003] The working temperature in the hot air box is as high as 380℃. A curved rubber roller is installed behind the hot air box, and the distance between the hot air box and the curved rubber roller is about 500mm. Since the roller surface of the curved rubber roller is made of Teflon, the high temperature and high humidity air in the production process will follow the paper sheets to the roller surface of the curved rubber roller, causing the curved rubber roller to be burned and damaged. In addition, the high temperature and high humidity air will follow the paper sheets into the air, causing energy waste.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] The utility model aims at the deficiencies in the background technology and provides a protective device for preventing the arc-shaped rubber roller from being burned. The utility model can solve the problem that the arc-shaped rubber roller is easily burned and damaged without changing the paper feeding loop, and can realize the waste heat recovery of high-temperature and high-humidity air.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A protective device for preventing a curved rubber roller from being burned, the protective device being installed between a hot air box of a glue applicator and the curved rubber roller, the protective device comprising a negative pressure exhaust box and a positive pressure blowing box, the bottom of the negative pressure exhaust box being provided with an exhaust port arranged obliquely, the bottom end of the exhaust port being provided with a wind shield; the bottom of the positive pressure blowing box being provided with an air blowing port, the outlet of the air blowing port being provided with an air guide plate, the air guide plate guiding the air to a position close to the top of the curved rubber roller;

[0008] The negative pressure exhaust box is connected to the exhaust drive shell through an exhaust pipeline, and the positive pressure blowing box is connected to the blowing drive shell through a blowing pipeline. The exhaust drive shell and the blowing drive shell are fixedly installed on both sides of the gear box.

[0009] Furthermore, the distance between the bottom end of the windshield and the paper sheet is 30 mm-40 mm.

[0010] Furthermore, a negative pressure exhaust box is installed at the bottom of the exhaust duct, one end of the exhaust duct is sealed, and the other end is connected to the exhaust drive shell; a positive pressure blow box is installed at the bottom of the blow duct, one end of the blow duct is sealed, and the other end is connected to the blow drive shell.

[0011] Furthermore, the negative pressure exhaust box and the exhaust pipeline are connected through a plurality of evenly distributed branch pipes; the positive pressure blowing box and the blowing pipeline are connected through a plurality of evenly distributed branch pipes.

[0012] Furthermore, a rotating shaft is installed through the exhaust drive housing, the gear box and the blowing drive housing, and two bearings are installed at the connection between the rotating shaft and the gear box, so that the rotation support of the rotating shaft is achieved through the bearings.

[0013] Furthermore, an exhaust impeller is installed in the exhaust drive housing, a blowing impeller is installed in the blowing drive housing, and the exhaust impeller and the blowing impeller are installed on the shaft heads at both ends of the rotating shaft.

[0014] Furthermore, both the exhaust drive housing and the blow drive housing are provided with an inlet and an outlet, the inlet of the exhaust drive housing is connected to the exhaust pipeline, and the outlet of the exhaust drive housing is connected to the waste heat recovery system of the paper machine.

[0015] Furthermore, the inlet of the blowing drive shell is connected to the air, and the outlet of the blowing drive shell is connected to the blowing pipeline.

[0016] Furthermore, a bevel gear set is installed inside the gear box, and the bevel gear set connects the rotating shaft with the output shaft of the motor for power transmission, and the motor is installed outside the gear box.

[0017] Furthermore, the bevel gear set includes a driving bevel gear and a driven bevel gear that are meshed and connected, the driving bevel gear is mounted on the output shaft of the motor, and the driven bevel gear is mounted on the rotating shaft.

[0018] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0019] The high-temperature and high-humidity air brought out by the hot air box of the glue-applying machine is blocked by the wind shield and then taken away by the negative pressure exhaust box to the waste heat recovery system of the paper machine for energy recovery. At the same time, the positive pressure blowing box blows normal-temperature air to the curved rubber roller, and the roller surface of the curved rubber roller is cooled by the normal-temperature air. The air inlet and outlet systems cooperate with each other to solve the problem of the curved rubber roller being burned and damaged. The air inlet and outlet systems are synchronously driven by a motor to reduce the consumption of electricity resources.

[0020] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the installation diagram of the utility model;

[0022] Figure 2 It is a top view of the structure of the utility model;

[0023] Figure 3 yes Figure 2The structural cross-sectional view at M in the middle;

[0024] Figure 4 It is a distribution diagram of the exhaust box, the blow box and the curved rubber roller.

[0025] In the figure, 1-arc glue roller, 2-sizing machine hot air box, 3-paper sheet, 4-negative pressure exhaust box, 5-positive pressure blowing box, 6-exhaust duct, 7-blowing duct, 8-wind shield, 9-air guide plate, 10-exhaust drive shell, 11-blowing drive shell, 12-gear box, 13-rotating shaft, 14-exhaust impeller, 15-blowing impeller, 16-bevel gear set, 17-motor. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0027] like Figure 1-Figure 4 As shown together, the utility model provides a protective device for preventing the arc-shaped rubber roller from being burned. The protective device is installed between the hot air box 2 of the glue applicator and the arc-shaped rubber roller 1.

[0028] The protective device includes a negative pressure exhaust box 4 and a positive pressure blowing box 5. The bottom of the negative pressure exhaust box 4 has an exhaust port arranged obliquely. The bottom of the exhaust port is provided with a wind shield 8. The distance between the bottom of the wind shield 8 and the paper sheet 3 is 30mm-40mm.

[0029] After the gluing, the high-temperature and high-humidity air brought out by the hot air box at 380° C. is blocked by the wind shield 8 and then taken away by the negative pressure exhaust box 4.

[0030] A blowing port is arranged at the bottom of the positive pressure blowing box 5 , and an air guide plate 9 is installed at the blowing port. The air guide plate 9 guides the wind to a position close to the top of the arc-shaped rubber roller 1 .

[0031] The positive pressure blowing box 5 blows normal temperature air to the curved rubber roller 1. Firstly, the normal temperature air is blown evenly to the roller surface of the curved rubber roller 1 to cool it down (the temperature difference between the wind blown to the roller surface and the roller surface cannot be too large). Secondly, it can destroy the roller surface wind ring of the curved rubber roller 1 to prevent the roller surface wind ring from causing the paper sheet 3 to fold.

[0032] The negative pressure exhaust box 4 is installed at the bottom of the exhaust duct 6, and the negative pressure exhaust box 4 is connected to the exhaust duct 6 through a plurality of evenly distributed branch pipes, ensuring that the wind force of the negative pressure exhaust box 4 is uniform along the length direction, and further ensuring that the paper sheet 3 is evenly exhausted along the width direction.

[0033] One end of the exhaust pipe 6 is blocked, and the other end is connected to the exhaust drive housing 10 .

[0034] The positive pressure blowing box 5 is installed at the bottom of the blowing pipeline 7. The positive pressure blowing box 5 and the blowing pipeline 7 are connected through a plurality of evenly distributed branch pipes to ensure that the wind force of the positive pressure blowing box 5 is even along the length direction.

[0035] One end of the blowing pipeline 7 is blocked, and the other end is connected to the blowing driving housing 11 .

[0036] The exhaust drive shell 10 and the blowing drive shell 11 are fixedly installed on both sides of the gear box 12. A rotating shaft 13 is installed through the exhaust drive shell 10, the gear box 12 and the blowing drive shell 11. Two bearings are installed at the connection between the rotating shaft 13 and the gear box 12, and the rotating shaft 13 is supported by the bearings.

[0037] An exhaust impeller 14 is installed in the exhaust drive shell 10, and a blowing impeller 15 is installed in the blowing drive shell 11. The exhaust impeller 14 and the blowing impeller 15 are installed on the shaft heads at both ends of the rotating shaft 13, and the exhaust impeller 14 and the blowing impeller 15 drive the air flow.

[0038] The exhaust drive housing 10 and the blower drive housing 11 are both provided with an inlet and an outlet. The inlet of the exhaust drive housing 10 is connected to the exhaust duct 6, and the outlet of the exhaust drive housing 10 is connected to the waste heat recovery system of the paper machine so as to recover energy from the high temperature and high humidity air.

[0039] The inlet of the blowing driving shell 11 is connected to the air, and the outlet of the blowing driving shell 11 is connected to the blowing pipeline 7 .

[0040] A bevel gear set 16 is installed inside the gear box 12, and the bevel gear set 16 connects the rotating shaft 13 with the output shaft of the motor 17 for power transmission. The motor 17 is installed outside the gear box 12, and the motor 17 synchronously provides power for the air intake and blowing system.

[0041] The bevel gear set 16 includes a driving bevel gear and a driven bevel gear that are meshed and connected. The driving bevel gear is mounted on the output shaft of the motor 17 , and the driven bevel gear is mounted on the rotating shaft 13 .

[0042] The specific working principle of this utility model:

[0043] The utility model is installed between the hot air box 2 of the glue applicator and the curved rubber roller 1. The high-temperature and high-humidity air brought out by the hot air box 2 of the glue applicator for the paper sheet 3 is blocked by the wind shield 8 and then taken away by the negative pressure exhaust box 4 to be sent to the waste heat recovery system of the paper machine for energy recovery; most of the high-temperature and high-humidity air is sucked away by the negative pressure exhaust box 4, but some of the high-temperature and high-humidity air is brought to the curved rubber roller 1, and at the same time, the positive pressure blowing box 5 blows normal-temperature air to the curved rubber roller 1, and the roller surface of the curved rubber roller 1 is cooled by the normal-temperature air, and the air inlet and outlet systems cooperate with each other to prevent the curved rubber roller 1 from being burned.

[0044] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A protective device for preventing a curved rubber roller from being burned, the protective device being installed between a hot air box (2) of a glue machine and a curved rubber roller (1), characterized in that: The protective device comprises a negative pressure exhaust box (4) and a positive pressure blowing box (5); the bottom of the negative pressure exhaust box (4) is provided with an exhaust port arranged obliquely, and the bottom end of the exhaust port is provided with a wind shield (8); the bottom of the positive pressure blowing box (5) is provided with an air outlet, and an air guide plate (9) is provided at the outlet of the air outlet, and the air guide plate (9) guides the air to a position close to the top of the arc-shaped rubber roller (1); The negative pressure exhaust box (4) is connected to the exhaust drive housing (10) via an exhaust pipe (6), and the positive pressure blowing box (5) is connected to the blowing drive housing (11) via a blowing pipe (7). The exhaust drive housing (10) and the blowing drive housing (11) are fixedly mounted on both sides of the gear box (12).

2. A protective device for preventing arc-shaped rubber roller from burning as claimed in claim 1, characterized in that: The distance between the bottom end of the wind deflector (8) and the paper sheet (3) is 30 mm to 40 mm.

3. A protective device for preventing arc-shaped rubber roller from burning as claimed in claim 1, characterized in that: The negative pressure exhaust box (4) is installed at the bottom of the exhaust pipe (6), one end of the exhaust pipe (6) is blocked, and the other end is connected to the exhaust drive housing (10); the positive pressure blowing box (5) is installed at the bottom of the blowing pipe (7), one end of the blowing pipe (7) is blocked, and the other end is connected to the blowing drive housing (11).

4. A protective device for preventing arc-shaped rubber rollers from being burned as claimed in claim 3, characterized in that: The negative pressure exhaust box (4) and the exhaust pipeline (6) are connected via a plurality of evenly distributed branch pipes; and the positive pressure blowing box (5) and the blowing pipeline (7) are connected via a plurality of evenly distributed branch pipes.

5. A protective device for preventing arc-shaped rubber roller from burning as claimed in claim 1, characterized in that: A rotating shaft (13) is installed through the exhaust drive housing (10), the gear box (12) and the blowing drive housing (11); two bearings are installed at the connection between the rotating shaft (13) and the gear box (12), and the rotating shaft (13) is supported by the bearings for rotation.

6. A protective device for preventing arc-shaped rubber roller from burning as claimed in claim 5, characterized in that: An exhaust impeller (14) is installed in the exhaust drive housing (10), and a blowing impeller (15) is installed in the blowing drive housing (11). The exhaust impeller (14) and the blowing impeller (15) are installed on shaft heads at both ends of the rotating shaft (13).

7. A protective device for preventing arc-shaped rubber roller from burning as claimed in claim 1, characterized in that: An inlet and an outlet are provided on the exhaust drive housing (10) and the blowing drive housing (11); the inlet of the exhaust drive housing (10) is connected to the exhaust pipeline (6), and the outlet of the exhaust drive housing (10) is connected to the waste heat recovery system of the paper machine.

8. A protective device for preventing arc-shaped rubber rollers from being burned as claimed in claim 7, characterized in that: The inlet of the blowing drive housing (11) is connected to the air, and the outlet of the blowing drive housing (11) is connected to the blowing pipeline (7).

9. A protective device for preventing arc-shaped rubber roller from burning as claimed in claim 1, characterized in that: A bevel gear set (16) is installed inside the gear box (12). The bevel gear set (16) connects the rotating shaft (13) with the output shaft of the motor (17) for power transmission. The motor (17) is installed outside the gear box (12).

10. A protective device for preventing arc-shaped rubber rollers from being burned as claimed in claim 9, characterized in that: The bevel gear set (16) comprises a driving bevel gear and a driven bevel gear which are meshed and connected, the driving bevel gear is mounted on the output shaft of the motor (17), and the driven bevel gear is mounted on the rotating shaft (13).

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