Double-layer hot air oven

Abstract

A double-layer hot air oven comprises an oven body and a drying system arranged on the oven body, the drying system comprises a first drying assembly and a second drying assembly, the first drying assembly is located over the oven body, and the first drying assembly and the oven body form a first drying chamber with material openings in the left side and the right side; the second drying assembly is located under the box body, and the second drying assembly and the box body form a second drying chamber with material openings in the left side and the right side, so that the total drying time of printing stock ink is prolonged, the better drying effect is achieved, the occupied space is saved through the upper-lower double-layer structure, and the maximum reasonable utilization of the workshop space is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of printing equipment, in particular to a double-layer hot air drying oven. Background Art

[0002] With the development of society and the progress of social life, the printing industry continues to grow and develop, and printed materials are everywhere in our lives. In order to be able to firmly print the color ink on the substrate, the substrate usually needs to go through an ink drying process.

[0003] The printing industry generally uses hot air drying in devices for drying ink. Existing hot air oven drying systems include, for example, a hot air oven drying system specifically for water-based ink printing on plastics disclosed in Chinese utility model CN207736952U, in which a box body is provided with at least one air inlet connected to a heat exchanger, and at least one air outlet connected to the heat exchanger; the air inlet and the air outlet are both arranged on one side of the box body and connected to the heat exchanger. However, poor ink drying effect is often caused by too short drying time. In order to ensure that the printed substrates have sufficient drying time to achieve better drying effect, manufacturers generally adopt the improvement method of extending the length of the box body. This increases the volume of the entire drying device, which is not conducive to the rational use of factory space. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to design a double-layer hot air oven. On the basis of the traditional hot air oven which has only one drying process, another drying chamber is added to make it a double-layer drying oven. The printed material passes through the first drying chamber and is flipped and transferred to the second drying chamber, thereby extending the drying time and achieving better drying effect, saving floor space, and maximizing the rational use of factory space.

[0005] To achieve the above-mentioned purpose, the utility model provides a double-layer hot air oven, including a box body and a drying system arranged around the box body, the drying system including: a first drying component and a second drying component, the first drying component is located directly above the box body, and forms a first drying chamber with first material openings on both sides of the left and right sides with the box body, the second drying component is located directly below the box body, and forms a second drying chamber with second material openings on both sides of the left and right sides with the box body.

[0006] Furthermore, the first drying component includes: an upper box cover, an upper partition, and several first air knives, a first air duct, a first air inlet duct, and two first air outlet ducts arranged on the upper surface of the upper partition. The upper box cover is arranged directly above the box body, the upper partition is located between the upper box cover and the box body, and the upper box cover and the upper partition form a first air chamber, the upper partition and the box body form a first drying chamber, the two first air ducts are respectively located on the left and right sides of the first air chamber, the two first air outlet ducts are respectively arranged at the front ends of the two first air ducts, and the first air inlet duct is arranged at the front end of the upper box cover and is connected to the first air chamber.

[0007] Furthermore, the second drying component includes: a lower box cover, a lower partition, and several second air knives, a second air duct, a second air inlet duct, and two second air outlet ducts arranged on the upper surface of the lower partition. The lower box cover is arranged directly below the box body, the lower partition is located between the lower box cover and the box body, and the lower box cover and the lower partition form a second air chamber, the lower partition and the box body form a second drying chamber, the two second air ducts are respectively located on the left and right sides of the second air chamber, the two second air outlet ducts are respectively arranged at the front ends of the two second air ducts, and the second air inlet duct is arranged at the front end of the lower box cover and is connected to the second air chamber.

[0008] Furthermore, the lower surfaces of the two first air guide ducts are each provided with a first air guide groove, and the upper surfaces of the two second air guide ducts are each provided with a second air guide groove, and the openings of the two first air guide grooves and the two second air guide grooves are both narrow in front and wide in the back.

[0009] Furthermore, the first wind knife is provided with two first air guide blades, the distance between the two first air guide blades gradually decreases from top to bottom, and the inclination angle is 30°~60°, and the second wind knife is provided with two second air guide blades, the distance between the two second air guide blades gradually increases from top to bottom, and the inclination angle is 30°~60°.

[0010] Furthermore, the double-layer hot air oven also includes a first handle and a second handle, the first handle is arranged at the rear end of the upper box cover, the front end of the upper box cover and the front end of the box body are hinged, and the rear end of the upper box cover is connected to the box body through a buckle, and the second handle is arranged at the rear end of the lower box cover, the front end of the lower box cover and the front end of the box body are hinged, and the rear end of the lower box cover is connected to the box body through a buckle.

[0011] After adopting the above technical solution, the beneficial effects are:

[0012] An additional drying chamber is added to create a double-layer drying device. The hot air gathered in the drying chamber is sucked into the air outlet chamber below through the air guide groove and then sucked out. The printing substrate is transferred from the first drying chamber to the second drying chamber, which extends the total drying time of the printing ink and achieves better drying effect. The upper and lower double-layer structure saves space and is conducive to maximizing the rational use of factory space. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a product schematic diagram of a double-layer hot air drying oven involved in the present utility model;

[0014] Figure 2 This is a rear view of the double-layer hot air oven involved in the utility model;

[0015] Figure 3a It is a left view of the utility model;

[0016] Figure 3b for Figure 3a sectional view of ;

[0017] Figure 4 This is a schematic structural diagram of the air duct of the double-layer hot air oven involved in the present utility model;

[0018] The accompanying drawings are marked as follows: 1. box body; 2. first drying component; 3. second drying component; 4. first handle; 5. second handle; 21. upper box cover; 22. upper partition; 23. first air knife; 24. first air guide duct; 25. first air inlet duct; 26. first air outlet duct; 31. lower box cover; 32. lower partition; 33. second air knife; 34. second air guide duct; 35. second air inlet duct; 36. second air outlet duct; 231. first air guide vane; 241. first air guide trough; 331. second air guide vane; 341. second air guide trough; A. first air chamber; a. first drying chamber; B. second air chamber; b. second drying chamber DETAILED DESCRIPTION

[0019] like Figure 1 、 2 , 3a, 3b and 4, the utility model provides a double-layer hot air drying oven, comprising a box body 1 and a drying system arranged around the box body 1, the drying system comprising: a first drying component 2 and a second drying component 3, the first drying component 3 is located directly above the box body 1, and forms a first drying chamber a with first material openings on both sides of the left and right sides thereof together with the box body 1, the second drying component 3 is located directly below the box body 1, and forms a second drying chamber b with second material openings on both sides of the left and right sides thereof together with the box body 1.

[0020] The substrate to be dried is conveyed through one of the first feed ports to the first drying chamber a for the first drying process, and is conveyed through another first feed port to the second drying component 3. After the first drying process is completed, the substrate is conveyed through one of the second feed ports to the second drying chamber b for the second drying process, and is conveyed out through another second feed port to complete the second drying process, thereby extending the total drying time of the substrate.

[0021] The first drying component 2 includes: an upper box cover 21, an upper partition 22, and several first air knives 23, a first air duct 24, a first air inlet duct 25 and two first air outlet ducts 26 arranged on the upper surface of the upper partition 22. The upper box cover 21 is arranged directly above the box body 1, and the upper partition 22 is located between the upper box cover 21 and the box body 1. The upper box cover 21 and the upper partition 22 form a first air chamber A, and the upper partition 22 and the box body 1 form a first drying chamber a. The two first air ducts 24 are respectively located on the left and right sides of the first air chamber A, and the two first air outlet ducts 26 are respectively arranged at the front ends of the two first air ducts 24. The first air inlet duct 25 is located at the front end of the upper box cover 21 and is connected to the first air chamber A.

[0022] The second drying component 3 includes: a lower box cover 31, a lower partition 32, and several second air knives 33, a second air duct 34, a second air inlet duct 35 and two second air outlet ducts 36 arranged on the upper surface of the lower partition 32. The lower box cover 31 is arranged directly below the box body 1, and the lower partition 32 is located between the lower box cover 31 and the box body 1. The lower box cover 31 and the lower partition 32 form a second air chamber B, and the lower partition 32 and the box body 1 form a second drying chamber b. The two second air ducts 34 are respectively located on the left and right sides of the second air chamber B, and the two second air outlet ducts 36 are respectively arranged at the front ends of the two second air ducts 34. The second air inlet duct 35 is located at the front end of the lower box cover 31 and is connected to the second air chamber B.

[0023] In this embodiment, the double-layer hot air drying oven further includes a first handle 4 and a second handle 5. The first handle 4 is located at the rear end of the upper cover 21, the front end of which is hinged to the front end of the housing 1 and connected to the housing 1 via a buckle. The second handle 5 is located at the rear end of the lower cover 31, the front end of which is hinged to the front end of the housing 1 and connected to the housing 1 via a buckle. The provision of the first handle 4 and the second handle 5 not only protects hands from burns when opening the upper and lower covers but also facilitates the removal and replacement of worn parts within the first drying assembly 2 and the second drying assembly 3.

[0024] Among them, the double-layer hot air oven can be connected to an external material conveying mechanism to convey the printed material that has completed the first drying process to the second drying chamber b for the second drying process. The air inlet pipe of the double-layer hot air oven is connected to an external electric heating air supply system, and the air outlet pipe is connected to an external fan to suck hot air from the box body 1.

[0025] In addition, when the double-layer hot air drying oven is used alone without an external material conveying mechanism, the first drying chamber a and the second drying chamber b can dry two printing substrates at the same time, and the operation is flexible and simple.

[0026] Preferably, the lower surfaces of the two first air ducts 24 are each provided with a first air guide groove 241, and the upper surfaces of the two second air ducts 34 are each provided with a second air guide groove 341. The openings of the two first air guide grooves 241 and the two second air guide grooves 341 are both narrow in front and wide in the back. The hot air flows from the drying chamber to the air outlet duct via the air guide duct through the air guide groove. The narrow in front and wide in the back structural design is conducive to the hot air in the drying chamber to flow quickly to the air outlet duct for discharge, thereby effectively reducing the problem of the box body getting hot due to excessive hot air gathering in the drying chamber.

[0027] Preferably, the first air knife 23 is provided with two first air guide blades 231, the distance between the two first air guide blades 231 gradually decreasing from top to bottom, and the inclination angle is 30° to 60°. The second air knife 33 is provided with two second air guide blades 331, the distance between the two second air guide blades 331 gradually increasing from top to bottom, and the inclination angle is 30° to 60°. When the angle is 30°, the air blown by the air knife has a wider distribution range and moderate intensity, which is suitable for drying inks with high water content. When the angle is 60°, the air blown by the air knife is more concentrated and has greater intensity, which is suitable for rapid drying of inks with low water content.

Claims

1. A double-layer hot air drying oven, comprising a box body and a drying system arranged around the box body, characterized in that: The drying system includes: a first drying component and a second drying component, the first drying component is located directly above the box body and forms a first drying chamber with material openings on both sides of the box body, and the second drying component is located directly below the box body and forms a second drying chamber with material openings on both sides of the box body.

2. The double-layer hot air oven according to claim 1, characterized in that: The first drying component includes: an upper box cover, an upper partition, and several first air knives, a first air duct, a first air inlet duct, and two first air outlet ducts arranged on the upper surface of the upper partition. The upper box cover is arranged directly above the box body, the upper partition is located between the upper box cover and the box body, and the upper box cover and the upper partition form a first air chamber, the upper partition and the box body form a first drying chamber, the two first air ducts are respectively located on the left and right sides of the first air chamber, the two first air outlet ducts are respectively arranged at the front ends of the two first air ducts, and the first air inlet duct is arranged at the front end of the upper box cover and is connected to the first air chamber.

3. The double-layer hot air oven according to claim 2, characterized in that: The second drying component includes: a lower box cover, a lower partition, and several second air knives, a second air duct, a second air inlet duct and two second air outlet ducts arranged on the upper surface of the lower partition. The lower box cover is arranged directly below the box body, the lower partition is located between the lower box cover and the box body, and the lower box cover and the lower partition form a second air chamber, the lower partition and the box body form a second drying chamber, the two second air ducts are respectively located on the left and right sides of the second air chamber, the two second air outlet ducts are respectively arranged at the front ends of the two second air ducts, and the second air inlet duct is arranged at the front end of the lower box cover and is connected to the second air chamber.

4. The double-layer hot air oven according to claim 3, characterized in that: The lower surfaces of the two first air guide pipes are each provided with a first air guide groove, and the upper surfaces of the two second air guide pipes are each provided with a second air guide groove. The openings of the two first air guide grooves and the two second air guide grooves are both narrow in front and wide in the back.

5. The double-layer hot air oven according to claim 4, characterized in that: The first wind knife is provided with two first air guide blades, the distance between the two first air guide blades gradually decreases from top to bottom, and the inclination angle is 30°~60°. The second wind knife is provided with two second air guide blades, the distance between the two second air guide blades gradually increases from top to bottom, and the inclination angle is 30°~60°.

6. The double-layer hot air oven according to claim 3, characterized in that: It also includes a first handle and a second handle, the first handle is arranged at the rear end of the upper box cover, the front end of the upper box cover and the front end of the box body are hinged, and the rear end of the upper box cover is connected to the box body through a buckle, and the second handle is arranged at the rear end of the lower box cover, the front end of the lower box cover and the front end of the box body are hinged, and the rear end of the lower box cover is connected to the box body through a buckle.

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