Organic solvent recovery device of printing machine

Abstract

The utility model relates to the technical field of printing machines, and discloses a printing machine organic solvent recovery device which comprises a drying box, the front side and the rear side of the inner wall of the drying box are fixedly connected with fixing blocks, the opposite ends of the fixing blocks are fixedly connected with fans, a recovery pipe is arranged at the right end of the drying box in a penetrating mode, and a flow dividing pipe is arranged at the right end of the recovery pipe in a penetrating mode. The right end of the flow dividing pipe is connected with a flow converging pipe through a cooling assembly, a guide pipe penetrates through the bottom end of the flow converging pipe, the other end of the guide pipe is fixedly connected with a recycling box, and an air conveying pipe penetrates through the top end of the recycling box. According to the drying device, the heating block is used for drying a printing piece, waste gas with an organic solvent is discharged into the recycling pipe under the action of the fan, and then the waste gas is cooled through the cooling box, so that the organic solvent in the waste gas is liquefied and flows into the recycling box to be collected, and the organic solvent is prevented from being volatilized and blended into air in the drying process; and the health of workers is influenced by human body inhalation.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to an organic solvent recovery device for printing machines. Background Art

[0002] Most of the printing inks used in some printing industries are printed after being dissolved in volatile organic solvents (including toluene, xylene, ethanol, ethyl acetate and other volatile solvents), and then dried after printing to evaporate the organic solvents. However, if the organic solvents are not recycled after evaporation, they are likely to pollute the surrounding environment.

[0003] After searching, the publication number CN205044293U is a printing press drying structure with a recovery device, including a drying bellows, the drying bellows is a closed cavity composed of a front box body and a rear box body, the front box body is provided with an air guide frame, the air guide frame is provided with an air duct connecting the front chamber and the rear chamber, the rear box body is provided with an oven guide roller for conveying printed materials, the air guide frame divides the drying bellows into a front chamber and a rear chamber, the oven guide roller is located in the rear chamber, the front chamber is connected to a hot air conveying pipe, the rear chamber is connected to an exhaust pipe, and the exhaust pipe is connected to an exhaust gas recovery device. The utility model of the printing press drying structure with a recovery device is provided with a closed drying box body, which can not only ensure that the drying gas can effectively dry the ink on the printed materials, but also prevent the organic solvent volatilized in the ink from leaking to the surrounding environment, and the exhaust pipe extracts the waste gas containing the organic solvent, so as to facilitate the collection of the waste gas containing the organic solvent after drying, and recycle it through the waste gas recovery device, which is both environmentally friendly and energy-saving;

[0004] Based on the above patent, the background technology thereof mentions that the organic solvent volatilized during the drying of printed materials is dispersed in the environment around the equipment along with the drying airflow, causing great pollution to the production environment and threatening the health of workers. In view of this technical problem, this application proposes a printing press organic solvent recovery device. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and proposes a printing press organic solvent recovery device, which can dry printed parts and recover the volatilized organic solvent to prevent it from affecting the health of workers.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A printing press organic solvent recovery device comprises a drying box, wherein both front and rear sides of the inner wall of the drying box are fixedly connected with fixed blocks, an opposite end of the fixed block is fixedly connected with a fan, a recovery pipe is passed through the right end of the drying box, a shunt pipe is passed through the right end of the recovery pipe, the right end of the shunt pipe is connected with a confluence pipe through a cooling assembly, a guide pipe is passed through the bottom end of the confluence pipe, the other end of the guide pipe is fixedly connected with a recovery box, and an air supply pipe is passed through the top of the recovery box.

[0008] Furthermore, the cooling assembly includes a cooling pipe fixedly connected to the right end of the diversion pipe, the outer wall of the cooling pipe is fixedly connected to a cooling box, the front end of the cooling box is connected to a return pipe through a cooling assembly, and the other end of the cooling pipe is passed through the left end of the confluence pipe.

[0009] Furthermore, the cooling component includes a water pipe passing through the front end of the cooling box, a water pump is provided on the outer wall of the water pipe, the other end of the water pipe is fixedly connected to the cooling box, and one end of the return pipe is passed through the rear end of the cooling box.

[0010] Furthermore, a heating block is fixedly connected to the left side of the inner wall of the drying box.

[0011] Furthermore, the other end of the air delivery pipe is passed through the top of the drying box.

[0012] Furthermore, the other end of the reflux pipe is passed through the rear end of the cooling box.

[0013] Furthermore, the outer wall of the cooling box is arranged on the inner wall of the air duct.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the fan cooperates with the recovery pipe, the shunt pipe, the cooling pipe, the cooling box, the confluence pipe, the guide pipe, the recovery box and the heating block to realize that the device can dry the printed parts and recover the volatilized organic solvent to prevent it from affecting the workers' bodies.

[0016] 2. In the utility model, the cooling box cooperates with the air pipe, water pipe, water pump and return pipe, so that the device can re-cool the used cooling water and use the obtained heat for auxiliary drying of printed parts, thereby improving resource utilization and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of an organic solvent recovery device for a printing press proposed by the utility model;

[0018] Figure 2 This is a rear perspective view of an organic solvent recovery device for a printing press proposed by the utility model;

[0019] Figure 3 The utility model is a cross-sectional view of a drying box in an organic solvent recovery device of a printing press.

[0020] Legend:

[0021] 1. Drying box; 2. Air supply pipe; 3. Recovery pipe; 4. Diversion pipe; 5. Cooling pipe; 6. Cooling box; 7. Water supply pipe; 8. Water pump; 9. Cooling box; 10. Converging pipe; 11. Guide pipe; 12. Recovery box; 13. Return pipe; 14. Heating block; 15. Fixing block; 16. Fan. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-3 The utility model provides an embodiment: a printing press organic solvent recovery device, including a drying box 1, a heating block 14 is fixedly connected to the left side of the inner wall of the drying box 1, a fixing block 15 is fixedly connected to the front and rear sides of the inner wall of the drying box 1, a fan 16 is fixedly connected to the opposite end of the fixing block 15, a recovery pipe 3 is passed through the right end of the drying box 1, a shunt pipe 4 is passed through the right end of the recovery pipe 3, a cooling pipe 5 is fixedly connected to the right end of the shunt pipe 4, a cooling box 6 is fixedly connected to the outer wall of the cooling pipe 5, and a water supply pipe 16 is passed through the front end of the cooling box 6. Tube 7, a water pump 8 is arranged on the outer wall of the water pipe 7, a cooling box 9 is fixedly connected to the other end of the water pipe 7, the outer wall of the cooling box 9 is arranged on the inner wall of the air pipe 2, a return pipe 13 is penetrated through the rear end of the cooling box 9, the other end of the return pipe 13 is penetrated through the rear end of the cooling box 6, the other end of the cooling pipe 5 is fixedly connected to the confluence pipe 10, the bottom end of the confluence pipe 10 is penetrated through a guide pipe 11, the other end of the guide pipe 11 is fixedly connected to a recovery box 12, the top of the recovery box 12 is penetrated through the air pipe 2, and the other end of the air pipe 2 is penetrated through the top of the drying box 1;

[0024] Specifically, the handle on the drying box 1 is pulled to open the box door provided at the front end of the drying box 1, and then the printed piece to be dried is placed in the drying box 1 and the box door is closed, and the heating block 14 and the fan 16 inside the drying box 1 are started, and the heating block 14 heats the inside of the drying box 1 to increase its temperature to dry the printed piece, so that the organic solvent on the surface of the printed piece is volatilized, and the waste gas containing the organic solvent is discharged into the recovery pipe 3 under the action of the fan 16, and then dispersed through the shunt pipe 4 connected to the right end of the recovery pipe 3, and the waste gas is divided into a plurality of cooling pipes 5, and then passed through The cooling water inside the supercooling box 6 cools down the exhaust gas inside the cooling pipe 5. Passing the exhaust gas into multiple cooling pipes 5 for cooling can increase the contact area between the exhaust gas and the cooling water in the cooling box 6, thereby improving the cooling effect and liquefying the organic solvent contained in the exhaust gas inside the cooling pipe 5. The liquefied organic solvent is then integrated through the confluence pipe 10 and flows into the recovery box 12 along the guide pipe 11 for collection, thereby preventing the organic solvent from volatilizing into the air during the drying process and being inhaled by the human body to affect the health of the workers. The treated gas is then discharged back into the drying box 1 through the air duct 2.

[0025] Specifically, when the cooling water inside the cooling box 6 is used to cool the exhaust gas, the heated cooling water inside the cooling box 6 is sent to the cooling box 9 along the water pipe 7 through the water pump 8. The cooling water is cooled by contacting the cooling box 9 with the outside through the water pipe 7. At the same time, the cooling box 9 is partially inserted in the air pipe 2, and the cooling of the cooling water inside the cooling box 9 can be accelerated by the cold air flowing inside the air pipe 2. The cooled cooling water flows back to the cooling box 6 through the return pipe 13 for recycling. At this time, the temperature released by the cooling water inside the cooling box 9 will be brought to the drying box 1 by the wind inside the air pipe 2, forming hot air blowing on the printed parts to assist in drying them, thereby improving resource utilization and reducing production costs.

[0026] Working principle: pull the handle on the drying box 1 to open the door set at the front end of the drying box 1, then put the printed piece to be dried into the drying box 1 and close the door, start the heating block 14 and the fan 16 inside the drying box 1, and heat the inside of the drying box 1 through the heating block 14 to increase its temperature to dry the printed piece, so that the organic solvent on the surface of the printed piece evaporates, and the waste gas with organic solvent is discharged into the recovery pipe 3 under the action of the fan 16, and then dispersed through the diversion pipe 4 connected to the right end of the recovery pipe 3, and the waste gas is divided into multiple cooling pipes 5, and then the cooling water inside the cooling box 6 is used to cool the waste gas inside the cooling pipe 5. Passing the waste gas into multiple cooling pipes 5 for cooling can increase the contact area between the waste gas and the cooling water in the cooling box 6, improve the cooling effect, and liquefy the organic solvent contained in the waste gas inside the cooling pipe 5, and then integrate the liquefied organic solvent through the confluence pipe 10 and pass it along The guide pipe 11 flows into the recovery box 12 for collection to prevent the organic solvent from volatilizing and dissolving into the air during the drying process and being inhaled by the human body to affect the health of the workers. The treated gas is discharged back into the drying box 1 through the air duct 2. When the cooling water inside the cooling box 6 is used to cool the exhaust gas, the cooling water heated inside the cooling box 6 is sent to the cooling box 9 along the water duct 7 through the water pump 8. The cooling water is cooled by contacting the cooling box 9 with the outside world through the water duct 7. At the same time, the cooling box 9 is partially inserted in the air duct 2, and the cooling of the cooling water inside the cooling box 9 can be accelerated by the cold air flowing inside the air duct 2. The cooling water after cooling flows back to the cooling box 6 through the return pipe 13 for recycling. At this time, the temperature released by the cooling water inside the cooling box 9 will be brought to the drying box 1 by the wind inside the air duct 2, forming hot air blowing on the printed piece, which assists in drying it, improves resource utilization and reduces production costs.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A printing press organic solvent recovery device, comprising a drying box (1), characterized in that: The front and rear sides of the inner wall of the drying box (1) are fixedly connected with fixed blocks (15); the opposite end of the fixed block (15) is fixedly connected with a fan (16); a recovery pipe (3) is passed through the right end of the drying box (1); a shunt pipe (4) is passed through the right end of the recovery pipe (3); the right end of the shunt pipe (4) is connected with a confluence pipe (10) through a cooling assembly; a guide pipe (11) is passed through the bottom end of the confluence pipe (10); the other end of the guide pipe (11) is fixedly connected with a recovery box (12); and an air supply pipe (2) is passed through the top end of the recovery box (12).

2. The printing press organic solvent recovery device according to claim 1, characterized in that: The cooling assembly comprises a cooling pipe (5) fixedly connected to the right end of the shunt pipe (4); the outer wall of the cooling pipe (5) is fixedly connected to a cooling box (6); the front end of the cooling box (6) is connected to a return pipe (13) via a cooling assembly; and the other end of the cooling pipe (5) is passed through the left end of the confluence pipe (10).

3. The printing press organic solvent recovery device according to claim 2, characterized in that: The cooling component comprises a water pipe (7) passing through the front end of the cooling box (6), a water pump (8) is arranged on the outer wall of the water pipe (7), the other end of the water pipe (7) is fixedly connected to a cooling box (9), and one end of the return pipe (13) passes through the rear end of the cooling box (9).

4. The printing press organic solvent recovery device according to claim 1, characterized in that: A heating block (14) is fixedly connected to the left side of the inner wall of the drying box (1).

5. The printing press organic solvent recovery device according to claim 1, characterized in that: The other end of the air delivery pipe (2) is passed through the top of the drying box (1).

6. The printing press organic solvent recovery device according to claim 2, characterized in that: The other end of the return pipe (13) is passed through the rear end of the cooling box (6).

7. The printing press organic solvent recovery device according to claim 3, characterized in that: The outer wall of the cooling box (9) is arranged on the inner wall of the air delivery pipe (2).

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