A dual-furnace recycling treatment equipment for RTO waste gas from gravure printing

Abstract

The present invention discloses a dual-furnace circulation treatment device for RTO waste gas of gravure printing, comprising a first circulation furnace and a second circulation furnace, wherein a third gas outlet bin is arranged on the upper part of the first circulation furnace, a gas outlet is arranged on the third gas outlet bin, a first gas outlet bin is arranged in the middle part of the first circulation furnace, a first gas inlet bin is arranged on the side of the first gas outlet bin, a gas inlet is arranged on the upper part of the first gas inlet bin, a first combustion chamber is arranged at the bottom of the first circulation furnace; a second gas outlet bin is arranged on the upper part of the second circulation furnace, a second gas inlet bin is arranged on the side of the second gas outlet bin, and a second combustion chamber is arranged at the lower part of the second circulation furnace; the upper part of the first gas outlet bin is connected with the second gas inlet bin, and the upper part of the second gas outlet bin is connected with the third gas outlet bin. The recovered organic waste gas is preheated by the first circulation furnace, enters the second circulation furnace for rapid combustion, and while burning and treating the organic waste gas, the treated waste gas that meets the standards is used for printing and air drying.

Description

Technical Field

[0001] The invention relates to the field of gravure printing, and in particular to a gravure printing RTO waste gas double-furnace circulation treatment device. Background Art

[0002] Gravure printing is to cover the entire surface of the printing plate with ink, and then use a special scraper to remove the ink from the blank part, so that the ink remains only in the cells of the image part, and then transfer the ink to the surface of the substrate under greater pressure to obtain a printed product. Gravure printing belongs to direct printing. The image part of the printing plate is concave, and the degree of concave varies with the level of the image. The blank part of the printing plate is convex and on the same plane. The existing gravure printing RTO is a single furnace or multiple furnaces that use hot water circulation. The water temperature heating and air drying speed is slow, and improvements need to be made. Summary of the invention

[0003] The object of the present invention is to provide a dual-furnace circulation treatment device for gravure printing RTO waste gas to solve the above-mentioned technical problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A dual-furnace circulation treatment device for RTO waste gas from gravure printing, comprising a first circulation furnace and a second circulation furnace, wherein a third gas outlet bin is provided on the upper part of the first circulation furnace, a gas outlet is provided on the third gas outlet bin, a first gas outlet bin is provided in the middle part of the first circulation furnace, a first gas inlet bin is provided on the side of the first gas outlet bin, a gas inlet is provided on the upper part of the first gas inlet bin, a first combustion chamber is provided at the bottom of the first circulation furnace, and the first combustion chamber is communicated with the bottom of the first gas inlet bin and the bottom of the first gas outlet bin respectively;

[0006] The second circulation furnace is provided with a second gas outlet bin on the upper part, a second gas inlet bin is provided on the side of the second gas outlet bin, a second combustion chamber is provided at the lower part of the second circulation furnace, and the bottom of the second gas outlet bin and the bottom of the second gas inlet bin are both connected to the second combustion chamber;

[0007] The upper portion of the first air outlet bin is communicated with the second air inlet bin, and the upper portion of the second air outlet bin is communicated with the third air outlet bin.

[0008] Preferably, the upper portion of the first air outlet bin is connected to the upper portion of the second air inlet bin via a first connecting pipe.

[0009] Preferably, the upper portion of the second air outlet bin is connected to the third air outlet bin via a second connecting pipe.

[0010] Preferably, the air inlet is tubular, and two adjacent slide grooves are provided on the inner wall of the air inlet along the circumference of the air inlet, and a circular wind shield plate is slidably installed on each of the slide grooves, and each of the circular wind shield plates is provided with multiple circles of air inlet rings around the center of the circular wind shield plate, and the air inlet ring is composed of multiple air inlet holes.

[0011] The beneficial effects of the present invention are:

[0012] 1. Improve the printing air drying speed, reduce power loss, effectively reduce costs and increase production.

[0013] 2. Recycle hot air to reduce workshop odor.

[0014] 3. The recovered organic waste gas is preheated in the first circulation furnace and enters the second circulation furnace for rapid combustion. While the organic waste gas is being burned, the treated waste gas that meets the standards is used for printing and air drying.

[0015] 4. By rotating the two circular wind shields relative to each other, the size of the inlet channel formed by the superposition of the air inlet holes on the two circular wind shields can be controlled, thereby controlling the speed and volume of the organic waste gas entering the first circulation furnace and the second circulation furnace, and then controlling the temperature of the waste gas after combustion. At the same time, the circular wind shield can play a certain filtering role, so that some of the oil and large particles of dust in the waste gas hit the circular wind shield and fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the connection structure between the air inlet and the circular wind shield of the present invention;

[0018] Figure 3 It is a front view schematic diagram of a circular windshield of the present invention;

[0019] Figure 4 It is a left side schematic diagram of a circular windshield of the present invention;

[0020] Figure markings: 1-first circulation furnace; 2-second circulation furnace; 3-second connecting pipe; 4-first connecting pipe; 5-circular wind shield; 6-air inlet; 7-chute; 101-third air outlet bin; 102-first combustion chamber; 103-air outlet; 104-air inlet; 105-first air inlet bin; 106-first air outlet bin; 201-second air outlet bin; 202-second air inlet bin; 203-second combustion chamber. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0022] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, a dual-furnace circulation treatment device for RTO waste gas from gravure printing comprises a first circulation furnace 1 and a second circulation furnace 2, a third gas outlet bin 101 is arranged on the upper part of the first circulation furnace 1, a gas outlet 103 is arranged on the third gas outlet bin 101, a first gas outlet bin 106 is arranged in the middle part of the first circulation furnace 1, a first gas inlet bin 105 is arranged on the side of the first gas outlet bin 106, a gas inlet 104 is arranged on the upper part of the first gas inlet bin 105, a first combustion chamber 102 is arranged at the bottom of the first circulation furnace 1, and the first combustion chamber 102 is communicated with the bottom of the first gas inlet bin 105 and the bottom of the first gas outlet bin 106 respectively;

[0024] The second circulation furnace 2 is provided with a second gas outlet bin 201 on the upper part, a second gas inlet bin 202 on the side of the second gas outlet bin 201, and a second combustion chamber 203 on the lower part of the second circulation furnace 2. The bottom of the second gas outlet bin 201 and the bottom of the second gas inlet bin 202 are both connected to the second combustion chamber 203.

[0025] The upper part of the first air outlet bin 106 is connected to the upper part of the second air inlet bin 202 through the first connecting pipe 4 , and the upper part of the second air outlet bin 201 is connected to the third air outlet bin 101 through the second connecting pipe 3 .

[0026] The air inlet 104 is tubular, and two adjacent slide grooves 7 are opened on the inner wall of the air inlet 104 along the circumference of the air inlet 104, and a circular wind shield plate 5 is slidably installed on each slide groove 7. Each circular wind shield plate 5 is provided with multiple circles of air inlet rings around the center of the circular wind shield plate 5, and the air inlet ring is composed of multiple air inlet holes 6.

[0027] Working principle: The organic waste gas generated during printing is introduced into the first air inlet bin 105 of the first circulation furnace 1 through the air inlet 104. The waste gas enters the first combustion chamber 102 through the first air inlet bin 105 for preliminary preheating, and then enters the second combustion chamber 203 of the second circulation furnace 2 through the first air outlet bin 106, the first connecting pipe 4, and the second air inlet bin 202 for rapid combustion, and then is discharged through the second air outlet bin 201, the second connecting pipe 3, the third air outlet bin 101, and the air outlet 103 for use in printing and air drying.

[0028] By rotating the two circular wind shields 5 relative to each other, the size of the inlet channel formed by the superposition of the air inlet holes 6 on the two circular wind shields 5 can be controlled, thereby controlling the speed and volume of the organic waste gas entering the first circulation furnace 1 and the second circulation furnace 2, and further controlling the temperature of the waste gas after combustion. At the same time, the circular wind shield 5 can play a certain filtering role, so that some of the oil and large particles of dust in the waste gas hit the circular wind shield 5 and fall down.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dual-furnace recycling treatment device for RTO waste gas from gravure printing, characterized in that: The invention comprises a first circulation furnace (1) and a second circulation furnace (2), wherein a third gas outlet bin (101) is arranged at the top of the first circulation furnace (1), and a gas outlet (103) is arranged on the third gas outlet bin (101); a first gas outlet bin (106) is arranged at the middle of the first circulation furnace (1); a first gas inlet bin (105) is arranged on the side of the first gas outlet bin (106), and a gas inlet (104) is arranged at the top of the first gas inlet bin (105); a first combustion chamber (102) is arranged at the bottom of the first circulation furnace (1), and the first combustion chamber (102) is communicated with the bottom of the first gas inlet bin (105) and the bottom of the first gas outlet bin (106) respectively; The second circulation furnace (2) is provided with a second gas outlet bin (201) at the top, a second gas inlet bin (202) is provided on the side of the second gas outlet bin (201), a second combustion chamber (203) is provided at the bottom of the second circulation furnace (2), and the bottom of the second gas outlet bin (201) and the bottom of the second gas inlet bin (202) are both connected to the second combustion chamber (203); The upper portion of the first air outlet bin (106) is in communication with the second air inlet bin (202), and the upper portion of the second air outlet bin (201) is in communication with the third air outlet bin (101); The upper part of the first air outlet bin (106) is connected to the upper part of the second air inlet bin (202) via a first connecting pipe (4); The upper portion of the second air outlet bin (201) is connected to the third air outlet bin (101) via a second connecting pipe (3).

2. The gravure printing RTO waste gas double furnace circulation treatment equipment according to claim 1 is characterized by: The air inlet (104) is tubular, and two adjacent slide grooves (7) are provided on the inner wall of the air inlet (104) along the circumference of the air inlet (104), and a circular wind shield (5) is slidably mounted on each of the slide grooves (7), and each of the circular wind shields (5) is provided with a plurality of air inlet rings around the center of the circular wind shield (5), and the air inlet rings are composed of a plurality of air inlet holes (6).

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