A kind of air flotation oven specially used for gravure printing machine

Abstract

The invention relates to the technical field of oven equipment, and provides an air flotation oven dedicated to a gravure printing machine, wherein the inlet of the air flotation oven is connected to the output end of the gravure printing machine; a partition plate is arranged in the air flotation oven, and the partition plate divides the inner cavity of the air flotation oven into an air flotation cavity and an air regulating cavity; the air regulating cavity is divided into an air inlet cavity, a fresh air cavity and a return air cavity; an air inlet and a fresh air inlet are arranged on the side end of the air flotation oven close to the air regulating cavity, and an air outlet duct and a return air duct for connecting a waste heat recovery device are arranged on the other side end of the air flotation oven; the air flotation oven provided by the invention can provide an air flotation support force for gravure printed products, so as to prevent gravure printed products whose ink is not dried from contacting the internal structure of the oven and damaging the ink structure of the gravure printed products, thereby improving the processing quality of the gravure printed products; circulating drying gas is provided in the air flotation oven, and the gravure printed products are repeatedly dried, thereby further improving the processing quality of the gravure printed products, and the overall design is reasonable, the structure is compact, and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of oven equipment, and in particular to an air flotation oven dedicated to a gravure printing machine. Background Art

[0002] A gravure printing machine is a machine used for gravure printing. After gravure printing, a drying device is needed to dry the ink on its surface.

[0003] The existing drying equipment used with gravure printing machines has the following problems when drying printed products:

[0004] 1. There is no structure for drying gas treatment in the drying equipment, and the drying gas cannot circulate in the drying equipment, resulting in poor drying effect in areas with heavy ink;

[0005] 2. The internal temperature of the drying equipment is inconvenient to adjust, which affects the drying effect and processing quality of gravure printed products.

[0006] For this purpose, we propose a special air flotation oven for gravure printing press. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies in the prior art, the present invention provides an air flotation oven dedicated to a gravure printing machine, which overcomes the deficiencies in the prior art and solves the problems that the existing drying equipment has no structure for processing the drying gas and that the temperature inside the drying equipment is inconvenient to adjust; 5. After the gravure printed product is pulled into the air flotation oven provided by the present invention, the first air collecting box group and the second air collecting box group blow air relative to the gravure printed product to provide an air flotation supporting force, thereby preventing the gravure printed product with undried ink from contacting the internal structure of the oven to damage the ink structure of the gravure printed product, thereby improving the processing quality of the gravure printed product; circulating drying gas is provided in the air flotation oven to repeatedly dry the gravure printed product, thereby further improving the processing quality of the gravure printed product, and the overall design is reasonable, the structure is compact, and the practicability is high.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0011] An air flotation oven dedicated to a gravure printing machine, wherein an inlet and an outlet are respectively arranged on opposite side ends of the air flotation oven, and the inlet is connected to the output end of the gravure printing machine;

[0012] The air flotation oven is provided with a partition plate, which divides the inner cavity of the air flotation oven into an air flotation cavity and an air conditioning cavity; the air conditioning cavity is provided with a first transverse plate and a second transverse plate, which divide the air conditioning cavity into an air inlet cavity, a fresh air cavity and a return air cavity, wherein the fresh air cavity and the return air cavity are both connected to the air flotation cavity;

[0013] The side end of the air flotation oven close to the air regulating chamber is provided with an air inlet for connecting to the fan and a fresh air inlet for connecting to the compensating fan, the air inlet is connected to the air inlet chamber, and the fresh air inlet is connected to the fresh air chamber; the other side end of the air flotation oven close to the air regulating chamber is provided with an air outlet duct and a return air duct for connecting to the waste heat recovery device, the air outlet duct passes through the first horizontal plate and is connected to the fresh air chamber, and the return air duct is connected to the return air chamber;

[0014] The air flotation chamber is provided with a first air collecting box group and a second air collecting box group for blowing air relative to each other, and a passage connecting an inlet and an outlet is provided between the first air collecting box group and the second air collecting box group, through which the gravure printed product can pass;

[0015] A heating structure is provided in the air inlet chamber, and the output end of the heating structure can be connected to the first air collecting box group and the second air collecting box group at the same time, and the air inlet chamber can also be connected to the second air collecting box group, and a first air valve adjustment structure is provided at the connection point between the second air collecting box group and the air inlet chamber.

[0016] Preferably, the first air collecting box group and the second air collecting box group each include at least two boxes, and a second air valve adjustment structure is provided between two adjacent boxes in the same air collecting box group.

[0017] Preferably, the box body is provided with a plurality of distributed air flotation nozzles.

[0018] Preferably, filter plates are connected to both sides of the partition plate, and the filter plates filter the gas flow between the fresh air chamber, the return air chamber and the air flotation chamber.

[0019] Preferably, a first inspection port is provided on the side end of the air flotation oven close to the connection between the second air collecting box group and the air inlet chamber.

[0020] Preferably, a second inspection port is provided on the side end of the air flotation oven away from the air regulating chamber.

[0021] Preferably, a third air valve adjustment structure is provided in both the air outlet duct and the air return duct.

[0022] Preferably, the first air valve regulating structure, the second air valve regulating structure and the third air valve regulating structure are all the same air valve regulating structure, which includes an air regulating plate, a rotating shaft passing through the air regulating plate, and a rotating handle connected to the end of the rotating shaft.

[0023] Preferably, the air flotation oven is also provided with a differential pressure gauge.

[0024] Preferably, the heating structure is provided with a plurality of evenly distributed ceramic heating tubes.

[0025] (III) Beneficial effects

[0026] The embodiment of the present invention provides a special air flotation oven for a gravure printing machine. It has the following beneficial effects:

[0027] 1. The present invention provides an air conditioning chamber in the air flotation oven, wherein the air inlet chamber is used for air intake to enable the air flotation chamber to work; wherein the fresh air chamber is used for replenishing fresh air and allowing the used dry gas in the air flotation chamber to flow into the waste heat recovery device; wherein the return air chamber is used for returning the gas treated by the waste heat recovery device to the air flotation chamber for continued use; the dry gas can circulate in the air flotation oven, repeatedly act on the gravure printed matter to dry it, thereby improving the drying effect of the gravure printed matter;

[0028] 2. The waste heat recovery device recovers the waste heat of the used dry gas, and then flows it back into the air flotation chamber for continued use, saving energy and avoiding waste heat;

[0029] 3. By setting a first air valve regulating structure at the connection point between the second air collecting box group and the air inlet chamber, when the temperature in the air flotation chamber is too high, the first air valve regulating structure is adjusted to allow part of the incoming air to directly enter the second air collecting box group, and then enter the air flotation chamber, so as to achieve temperature regulation of the drying gas in the air flotation oven and improve the drying effect and processing quality of the gravure printed matter;

[0030] 4. The air collecting box group includes at least two boxes. By setting a second air valve regulating structure between two adjacent boxes, when the gravure printed product entering the air flotation oven is wide, the second air valve regulating structure is adjusted to connect the two boxes, and air is blown to the gravure printed product at the same time, thereby improving the drying efficiency of the wide gravure printed product; when the gravure printed product entering the air flotation oven is narrow, the second air valve regulating structure is adjusted to close the connection between the two boxes, and only one box is kept working, thereby meeting the drying requirements of the narrow gravure printed product and avoiding energy waste;

[0031] 5. After the gravure printed product is pulled into the air flotation oven provided by the present invention, the first air box group and the second air box group blow air relative to the gravure printed product to provide an air flotation support force, thereby preventing the gravure printed product with undried ink from contacting the internal structure of the oven to damage the ink structure of the gravure printed product, thereby improving the processing quality of the gravure printed product; circulating dry gas is provided in the air flotation oven to repeatedly dry the gravure printed product, thereby further improving the processing quality of the gravure printed product. The overall design is reasonable, the structure is compact, and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0034] Figure 3 This is a schematic diagram of the structure of the present invention without the outer plate;

[0035] Figure 4 It is an enlarged view of the local structure inside the present invention;

[0036] Figure 5 It is a structural schematic diagram of the stroke valve regulating structure of the present invention;

[0037] In the figure: air flotation oven 1; inlet 1.1; outlet 1.2; air inlet 1.3; fresh air inlet 1.4; first inspection port 1.5; second inspection port 1.6; partition plate 2; first horizontal plate 3; second horizontal plate 4; air outlet duct 5; return air duct 6; heating structure 7; first air collecting box group 8; second air collecting box group 9; first air valve regulating structure 10; differential pressure gauge 11; second air valve regulating structure 12; filter plate 13; third air valve regulating structure 14; air flotation chamber a; air regulating chamber b; air inlet chamber b1; fresh air chamber b2; return air chamber b3; channel X; air regulating plate F1; rotating shaft F2; rotating handle F3. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See attached Figure 1-5 , a special air flotation oven for a gravure printing machine, the air flotation oven 1 is provided with an inlet 1.1 and an outlet 1.2 on opposite side ends, the inlet 1.1 is connected to the output end of the gravure printing machine;

[0040] The air flotation oven 1 is provided with a partition plate 2, which divides the inner cavity of the air flotation oven 1 into an air flotation chamber a and an air conditioning chamber b; the air flotation chamber a is used for processing gravure printed products; the air conditioning chamber b is provided with a first transverse plate 3 and a second transverse plate 4, which divide the air conditioning chamber b into an air inlet chamber b1, a fresh air chamber b2 and a return air chamber b3, wherein the fresh air chamber b2 and the return air chamber b3 are both connected to the air flotation chamber a;

[0041] The side end of the air flotation oven 1 close to the air regulating chamber b is provided with an air inlet 1.3 for connecting to the fan and a fresh air inlet 1.4 for connecting to the compensation fan, the air inlet 1.3 is connected to the air inlet chamber b1, and the fresh air inlet 1.4 is connected to the fresh air chamber b2; the other side end of the air flotation oven 1 close to the air regulating chamber b is provided with an air outlet duct 5 and a return air duct 6 for connecting to the waste heat recovery device, the air outlet duct 5 passes through the first horizontal plate 3 and is connected to the fresh air chamber b2, and the return air duct 6 is connected to the return air chamber b3; by providing the air regulating chamber b in the air flotation oven 1, the air inlet chamber b1 therein is used for air intake, so that The air flotation chamber a performs air flotation operation; the fresh air chamber b2 is used to replenish fresh air and allow the used dry gas in the air flotation chamber a to flow into the waste heat recovery device; the return air chamber b3 is used to return the gas treated by the waste heat recovery device to the air flotation chamber a for continued use; the dry gas can circulate in the air flotation oven 1 to repeatedly dry the gravure printed matter, thereby improving the drying effect of the gravure printed matter; the waste heat recovery device recovers the used dry gas for waste heat, and then re-flows it into the air flotation chamber a for continued use, thereby saving energy consumption and avoiding waste of waste heat;

[0042] The air flotation chamber a is provided with a first air collecting box group 8 and a second air collecting box group 9 for blowing air relative to each other, and a channel X is provided between the first air collecting box group 8 and the second air collecting box group 9, which is connected with the inlet 1.1 and the outlet 1.2 and allows the gravure printed product to pass through;

[0043] The air inlet chamber b1 is provided with a heating structure 7, and a number of evenly distributed ceramic heating tubes are provided in the heating structure 7. The ceramic tubes have high electrothermal conversion efficiency, fast heating, small thermal inertia, high temperature resistance, corrosion resistance, good thermochemical performance stability, long service life, high insulation strength, and no pollution. Compared with other electric heating elements, it can save energy by about 30%; the output end of the heating structure 7 can be connected to the first air collecting box group 8 and the second air collecting box group 9 at the same time, and the air inlet chamber b1 can also be connected to the second air collecting box group 9, and the second air collecting box group 9 is connected to the air inlet chamber b1. A first air valve regulating structure 10 is provided at the place where the second air collecting box group 9 is connected to the air inlet chamber b1; a differential pressure gauge 11 is also provided on the flotation oven 1; by providing the first air valve regulating structure 10 at the place where the second air collecting box group 9 is connected to the air inlet chamber b1, the staff detects the temperature difference in the flotation chamber a through the differential pressure gauge 11. When the temperature in the flotation chamber a is too high, the first air valve regulating structure 10 is adjusted to allow part of the incoming air to directly enter the second air collecting box group 9, and then enter the flotation chamber a, thereby achieving temperature regulation of the drying gas in the flotation oven 1 and improving the drying effect and processing quality of the gravure printed matter.

[0044] In the air flotation oven 1 provided by the present invention, after the gravure printed product is drawn into the air flotation oven 1, the first air collecting box group 8 and the second air collecting box group 9 blow air relative to the gravure printed product to provide an air flotation support force, thereby preventing the gravure printed product whose ink is not yet dry from contacting the internal structure of the oven to damage the ink structure of the gravure printed product, thereby improving the processing quality of the gravure printed product; circulating dry gas is provided in the air flotation oven 1, and the gravure printed product is repeatedly dried to further improve the processing quality of the gravure printed product. The overall design is reasonable, the structure is compact, and the practicability is high.

[0045] In the present embodiment, the first air collecting box group 8 and the second air collecting box group 9 each include at least two boxes, on which a number of distributed flotation nozzles are provided, through which air is evenly discharged outwards; a second air valve regulating structure 12 is arranged between two adjacent boxes in the same air collecting box group; the air collecting box group includes at least two boxes, and by arranging the second air valve regulating structure 12 between two adjacent boxes, when the gravure print entering the air flotation oven 1 is wide, the second air valve regulating structure 12 is adjusted to connect the two boxes, and at the same time, air is blown to the gravure print, thereby improving the drying efficiency of the wide gravure print; when the gravure print entering the air flotation oven 1 is narrow, the second air valve regulating structure 12 is adjusted to close the connection between the two boxes, leaving only one box working, thereby meeting the drying requirements of the narrow gravure print and avoiding energy waste.

[0046] In this embodiment, filter plates 13 are connected to both sides of the partition plate 2, and the filter plates 13 filter the gas flowing between the fresh air chamber b2, the return air chamber b3 and the air flotation chamber a.

[0047] In this embodiment, a first inspection port 1.5 is provided on the side end of the air flotation oven 1 close to the connection between the second air collecting box group 9 and the air inlet chamber b1, which is convenient for adjusting the first air valve adjustment structure 10 and facilitating the inspection and maintenance of the connection between the second air collecting box group 9 and the air inlet chamber b1; a second inspection port 1.6 is provided on the side end of the air flotation oven 1 away from the air regulating chamber b, which is convenient for the inspection and maintenance of the internal structure of the air flotation chamber a.

[0048] In this embodiment, the air outlet duct 5 and the air return duct 6 are both provided with a third air valve regulating structure 14. According to the use of the dry gas inside the flotation oven 1, if it is necessary to recover the waste heat of the used dry gas, the third air valve regulating structure 14 is adjusted to connect the waste heat recovery device for recovery treatment; if the used dry gas in the flotation oven 1 has no waste heat recovery value, the third air valve regulating structure 14 is adjusted to close the connection between the waste heat recovery device and the flotation oven 1 to avoid ineffective work.

[0049] In this embodiment, the first air valve regulating structure 10, the second air valve regulating structure 12, and the third air valve regulating structure 14 are all the same air valve regulating structure, which includes an air regulating plate F1, a rotating shaft F2 passing through the air regulating plate F1, and a handle F3 connected to the end of the rotating shaft F2. By rotating the rotating handle F3, the rotating shaft F2 drives the air regulating plate F1 to rotate, thereby achieving the purpose of adjusting the air inlet and outlet.

[0050] Working method: After the gravure printed product is discharged from the gravure printing machine, the outer end of the gravure printed product is pulled from the entrance into the flotation chamber a of the flotation oven 1; the fan sends gas from the air inlet 1.3 to the air inlet chamber b1, and after being heated by the heating structure 7, it enters the first air collecting box group 8 and the second air collecting box group 9, and the air is discharged evenly outward from the air flotation nozzle on the box body to perform air flotation support and drying treatment on the gravure printed product; the used gas flows into the fresh air chamber b2, and flows into the waste heat recovery device through the air outlet pipe 5 for waste heat recovery treatment, and part of the treated gas enters the return air chamber b3 through the return air pipe 6, and then flows back into the flotation chamber a to continue working.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special air flotation oven for a gravure printing machine, wherein an inlet and an outlet are respectively arranged on opposite side ends of the air flotation oven, and the inlet is connected to the output end of the gravure printing machine; Features: The air flotation oven is provided with a partition plate, which divides the inner cavity of the air flotation oven into an air flotation cavity and an air conditioning cavity; the air conditioning cavity is provided with a first transverse plate and a second transverse plate, which divide the air conditioning cavity into an air inlet cavity, a fresh air cavity and a return air cavity, wherein the fresh air cavity and the return air cavity are both connected to the air flotation cavity; The side end of the air flotation oven close to the air regulating chamber is provided with an air inlet for connecting to the fan and a fresh air inlet for connecting to the compensating fan, the air inlet is connected to the air inlet chamber, and the fresh air inlet is connected to the fresh air chamber; the other side end of the air flotation oven close to the air regulating chamber is provided with an air outlet duct and a return air duct for connecting to the waste heat recovery device, the air outlet duct passes through the first horizontal plate and is connected to the fresh air chamber, and the return air duct is connected to the return air chamber; The air flotation chamber is provided with a first air collecting box group and a second air collecting box group for blowing air relative to each other, and a passage connecting an inlet and an outlet for the gravure printed product to pass through is provided between the first air collecting box group and the second air collecting box group; The air inlet cavity is provided with a heating structure, the output end of the heating structure can be connected to the first air collecting box group and the second air collecting box group at the same time, and the air inlet cavity can also be connected to the second air collecting box group, and the connection point between the second air collecting box group and the air inlet cavity is provided with a first air valve adjustment structure; The first air collecting box group and the second air collecting box group each include at least two boxes, and a second air valve adjustment structure is provided between two adjacent boxes in the same air collecting box group; Filter plates are connected to both sides of the partition plate, and the filter plates filter the gas flow between the fresh air chamber, the return air chamber and the air flotation chamber; The air outlet duct and the air return duct are both provided with a third air valve adjustment structure; The first air valve regulating structure, the second air valve regulating structure and the third air valve regulating structure are all the same air valve regulating structure, which includes an air regulating plate, a rotating shaft passing through the air regulating plate, and a rotating handle connected to the end of the rotating shaft.

2. A special air flotation oven for gravure printing press as claimed in claim 1, Features: The box body is provided with a plurality of distributed air flotation nozzles.

3. A special air flotation oven for gravure printing press as claimed in claim 1, Features: The air flotation oven is provided with a first inspection port on the side end close to the connection between the second air collecting box group and the air inlet cavity.

4. The air flotation oven for gravure printing press according to claim 1, Features: The side end of the air flotation oven away from the air regulating chamber is provided with a second inspection port.

5. The air flotation oven for gravure printing press according to claim 1, Features: The air flotation oven is also provided with a differential pressure gauge.

6. A special air flotation oven for gravure printing press as claimed in claim 1, Features: The heating structure is provided with a plurality of evenly distributed ceramic heating tubes.

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