Electric heating constant-temperature drying chamber for printing flexible packaging film

Abstract

The utility model relates to an electric heating constant-temperature drying chamber for printing a flexible packaging film, which belongs to the technical field of drying equipment and comprises a drying chamber body, support rollers, an air outlet, a bottom plate, a partition plate, an inlet / outlet, an upper distribution filter plate, a lower distribution filter plate, an electric heating pipe and an air inlet pipe. A first air outlet is formed in the middle, facing the packaging film, of the blocking air pipe, a second air outlet obliquely spraying outwards is formed in the portion, on the outer side of the first air outlet, of the blocking air pipe, and a temperature sensor is arranged in each heating chamber. The drying chamber body is divided into the heating chambers through the partition plates, the upper distribution filter plate and the lower distribution filter plate are arranged in each heating chamber, the electric heating pipes are arranged between the upper distribution filter plates and the lower distribution filter plates, and it can be better guaranteed that the interior of the drying chamber body is heated at a constant temperature; obstructing air pipes are arranged at inlets and outlets in the left side and the right side of the drying chamber body, and the heating and drying effect is better guaranteed.

Description

Technical Field

[0001] The utility model relates to an electrothermal constant temperature drying chamber for printing flexible packaging films, belonging to the technical field of drying equipment. Background Art

[0002] When producing printed flexible packaging films, finished products are formed after processes such as printing, compounding, drying, cooling, inkjet coding, and slitting. After compounding, the printed flexible packaging films will pass through an electrothermal constant temperature chamber for drying. However, the current electrothermal constant temperature drying chamber has an integral structure inside, and the air is heated by electric heating tubes at the bottom. But such a structure is difficult to achieve constant temperature drying inside the chamber, and cold air is likely to enter or hot air is likely to be discharged at the inlet and outlet of the packaging film, affecting the heating and drying effect. Content of the Utility Model

[0003] The utility model provides an electrothermal constant temperature drying chamber for printing flexible packaging films, which solves the problems that the current drying chamber has an integral structure and is difficult to achieve constant temperature drying inside the chamber, and cold air is likely to enter or hot air is likely to be discharged at the inlet and outlet of the packaging film, affecting the heating and drying effect.

[0004] The utility model relates to an electrothermal constant temperature drying chamber for printing flexible packaging films, including a drying chamber body. A plurality of support rollers are rotatably installed on the inner and outer side walls of the drying chamber body. An air outlet is provided at the top of the drying chamber body. A bottom plate is fixed at the lower part inside the drying chamber body. A partition plate that divides the drying chamber body into a plurality of heating chambers is fixed on the top of the bottom plate along the left - right direction. Inlets and outlets are provided on both the partition plate and the left and right side walls of the drying chamber body. A upper distribution filter plate and a lower distribution filter plate are fixed in each heating chamber. A plurality of electric heating tubes are arranged between the upper distribution filter plate and the lower distribution filter plate. An air inlet pipe is connected to the bottom plate in the lower part of the heating chamber. Barrier air pipes are fixed at the top and bottom of the inlets and outlets on the drying chamber body. An air outlet one facing the exact middle of the packaging film is provided on the barrier air pipe. An air outlet two spraying obliquely outwards is provided on the barrier air pipe outside the air outlet one. A temperature sensor is provided in each heating chamber. The upper distribution filter plate and the lower distribution filter plate play a role in evenly distributing air, and at the same time, they can also reduce the speed of the air entering the heating chamber from the air inlet pipe, preventing the packaging film from being blown too high by excessive wind speed and damaging the packaging film.

[0005] As a preference, an air delivery pipe one is arranged in the cavity below the bottom plate. Both ends of the air delivery pipe one are fixed with air delivery pipes two. The two ends of the two air delivery pipes two are respectively connected to different heating chambers. The outlet of the air delivery pipe one is fixed in the middle of the air delivery pipe two. The outlet of the air inlet pipe is fixed in the middle of the air delivery pipe one, which can ensure the unified air pressure of the air entering each heating chamber, and better ensure the stable transportation of the packaging film during the heating and drying process.

[0006] As a preference, a blower is connected to the air inlet pipe. The inlet of the blower is connected to an air extraction pipe, and the other end of the air extraction pipe is connected to the air outlet. A dryer is provided on the air extraction pipe, enabling heat energy recovery and utilization, and thus being more energy-efficient.

[0007] As a preference, the air inlet pipe is connected to a delivery pipe, and the delivery pipe is connected to a barrier air pipe, supplying a part of the heat energy from the recovered air outlet to the barrier air pipe to achieve heat energy recovery and utilization.

[0008] As a preference, a support tray is fixed outside the inlet and outlet on the right side wall of the dryer body. A cooling pair roll machine is provided on the support tray, enabling the packaging film to be cooled after coming out, which is more convenient for subsequent processing.

[0009] The present utility model has the following beneficial effects:

[0010] The dryer body is divided into multiple heating chambers by a partition board. Upper distribution filter plates and lower distribution filter plates are provided in each heating chamber, and a plurality of electric heating tubes are provided between the upper distribution filter plates and the lower distribution filter plates, which can better ensure that the inside of the dryer body is heated at a constant temperature. Barrier air pipes are provided at the inlets and outlets on the left and right sides of the dryer body. An air outlet one that blows vertically towards the packaging film is provided on the barrier air pipe to prevent the hot air in the dryer body from being discharged, and an air outlet two that sprays obliquely outwards is provided to prevent cold air from entering, better ensuring the heating and drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is Figure 1 an enlarged structural diagram of part A in

[0013] Figure 3 a schematic connection structure diagram of the blower;

[0014] Figure 4 a schematic installation structure diagram of the cooling pair roll machine;

[0015] In the figure: 1. Dryer body, 2. Air outlet, 3. Partition board, 4. Inlet and outlet, 5. Support roller, 6. Upper distribution filter plate, 7. Electric heating tube, 8. Lower distribution filter plate, 9. Second air delivery pipe, 10. Heating chamber, 11. Blower, 12. Air inlet pipe, 13. First air delivery pipe, 14. Bottom plate, 15. Barrier air pipe, 16. Second air outlet, 17. First air outlet, 18. Air extraction pipe, 19. Dryer, 20. Delivery pipe, 21. Support tray, 22. Cooling pair roll machine. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further described below in conjunction with the embodiments.

[0017] Example 1, as Figures 1 to 4 shown, the utility model is an electrothermal constant temperature drying chamber for printing flexible packaging films, including a drying chamber body 1. A plurality of support rollers 5 are rotatably installed on the inner and outer side walls of the drying chamber body 1. An air outlet 2 is provided at the top of the drying chamber body 1. A bottom plate 14 is fixed at the lower part inside the drying chamber body 1. A partition plate 3 that divides the drying chamber body 1 into a plurality of heating chambers 10 is fixed on the top of the bottom plate 14 along the left-right direction. Import and export ports 4 are provided on both the partition plate 3 and the left and right side walls of the drying chamber body 1. A plurality of upper distribution filter plates 6 and lower distribution filter plates 8 are fixed in each heating chamber 10. A plurality of electric heating tubes 7 are arranged between the upper distribution filter plate 6 and the lower distribution filter plate 8. An air inlet pipe 12 is connected to the bottom plate 14 at the lower part of the heating chamber 10. Blocking air pipes 15 are fixed at the top and bottom of the import and export ports 4 on the drying chamber body 1. An air outlet one 17 is provided in the middle of the blocking air pipe 15 facing the packaging film. An air outlet two 16 that sprays obliquely outwards is provided on the blocking air pipe 15 outside the air outlet one 17. A temperature sensor is provided in each heating chamber 10.

[0018] During use, the printed flexible packaging film to be dried enters from the import and export port 4 on the left side of the drying chamber body 1, then passes through the import and export port 4 on the partition plate 3, and exits from the import and export port 4 on the right side of the drying chamber body 1. The support rollers 5 support the printed flexible packaging film. When the printed flexible packaging film passes through each heating chamber 10, it will be blown by the air flowing into the lower distribution filter plate 8 through the air inlet pipe 12 to slow down and reach the electric heating tubes 7 for heating, and then blown to the upper distribution filter plate 6 for redistribution and speed reduction, and then blown onto the printed flexible packaging film for drying. Moreover, the temperature sensor in the heating chamber 10 will monitor the temperature. When the temperature is too high or too low, the number of electric heating tubes 7 can be turned off or on for adjustment. In addition, the hot air sprayed from the air outlet two 16 and the air outlet one 17 of the blocking air pipe 15 can prevent external cold air from entering the drying chamber body 1 and prevent the hot air inside the drying chamber body 1 from being discharged from the import and export port 4.

[0019] Example 2, on the basis of Example 1, an air delivery pipe one 13 is provided in the cavity below the bottom plate 14. Both ends of the air delivery pipe one 13 are fixed with air delivery pipes two 9. The two ends of the two air delivery pipes two 9 are respectively connected to different heating chambers 10. The outlet of the air delivery pipe one 13 is fixed in the middle of the air delivery pipe two 9. The outlet of the air inlet pipe 12 is fixed in the middle of the air delivery pipe one 13.

[0020] The air inlet pipe 12 is connected to a fan 11. The inlet of the fan 11 is connected to an air extraction pipe 18. The other end of the air extraction pipe 18 is connected to the air outlet 2. A dryer 19 is provided on the air extraction pipe 18. The dryer 19 is prior art and will not be described here.

[0021] The air inlet pipe 12 is connected to a delivery pipe 20, and the delivery pipe 20 is connected to a barrier air pipe 15. A maintenance window is provided on the front or rear side wall of the drying chamber body 1, and a closing plate for closing it is fixed on the maintenance window. The closing plate is fixed to the side wall of the drying chamber body 1 by bolts. Each electric heating pipe 7 is connected to a control switch, the control switch is connected to a PLC controller, and the PLC controller is connected to a temperature sensor and a blower 11.

[0022] A support pallet 21 is fixed outside the inlet / outlet 4 on the right side wall of the drying chamber body 1, and there is at least one cooling pair roll machine 22 on the support pallet 21. The cooling pair roll machine 22 is an existing cold pressing pair roll machine, mainly including support rolls, pressing rolls, brackets, adjusting studs, adjusting nuts, hollow cylinders, support shafts, rotary joint one and rotary joint two, etc., which will not be described in detail here.

[0023] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0024] In the description of the present invention, the orientation or positional relationship indicated by terms such as "inside", "outside", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

Claims

1. An electric constant temperature drying chamber for printing flexible packaging film, comprising a drying chamber body (1), a plurality of supporting rollers (5) rotatably mounted on the inner and outer side walls of the drying chamber body (1), and an air outlet (2) is provided on the top of the drying chamber body (1), characterized in that: A bottom plate (14) is fixed to the lower part of the drying chamber body (1), and a partition plate (3) is fixed to the top of the bottom plate (14) along the left and right directions to divide the drying chamber body (1) into a plurality of heating chambers (10). The partition plate (3) and the left and right side walls of the drying chamber body (1) are provided with an inlet and outlet (4). An upper distribution filter plate (6) and a lower distribution filter plate (8) are fixed to each heating chamber (10), and a plurality of electric heating pipes (7) are provided between the upper distribution filter plate (6) and the lower distribution filter plate (8). An air inlet pipe (12) is connected to the bottom plate (14) at the lower part of the heating chamber (10), and a barrier air pipe (15) is fixed to the top and bottom of the inlet and outlet (4) on the drying chamber body (1), and an air outlet 1 (17) is provided on the barrier air pipe (15) toward the middle of the packaging film, and an air outlet 2 (16) inclined to spray outward is provided on the barrier air pipe (15) outside the air outlet 1 (17), and a temperature sensor is provided in each heating chamber (10).

2. The electric constant temperature drying chamber for printing flexible packaging film according to claim 1, characterized in that: An air delivery pipe 1 (13) is provided in the cavity below the bottom plate (14), and air delivery pipes 2 (9) are fixed to both ends of the air delivery pipe 1 (13). The two ends of the two air delivery pipes 2 (9) are respectively connected to different heating chambers (10). The outlet of the air delivery pipe 1 (13) is fixed at the middle of the air delivery pipe 2 (9), and the outlet of the air inlet pipe (12) is fixed at the middle of the air delivery pipe 1 (13).

3. The electric heating constant temperature drying chamber for printing flexible packaging film according to claim 1, characterized in that: The air inlet pipe (12) is connected to the fan (11), the inlet of the fan (11) is connected to the exhaust pipe (18), the other end of the exhaust pipe (18) is connected to the air outlet (2), and a dryer (19) is provided on the exhaust pipe (18).

4. The electric heating constant temperature drying chamber for printing flexible packaging film according to claim 3, characterized in that: The air inlet pipe (12) is connected to a delivery pipe (20), and the delivery pipe (20) is connected to the blocking air pipe (15).

5. The electric heating constant temperature drying chamber for printing flexible packaging film according to claim 1, characterized in that: A support plate (21) is fixed to the outside of the inlet and outlet (4) on the right side wall of the drying chamber body (1), and at least one cooling roller (22) is provided on the support plate (21).

Images