TWI695787B - Exhaust system for printing machine in printing industry - Google Patents

Abstract

An exhaust system for multiple printing presses includes: an intake manifold, a first heater, a first printing press, a second printing press, and an air collecting manifold. The first heater is connected to the intake manifold. The first printing press includes a first reaction zone and a first exhaust zone connected to the first reaction zone. The first reaction zone is connected to the first heater through a first conveying branch pipe, and the first exhaust zone collects exhaust gas. The second printing press includes a second reaction zone and a second exhaust zone connected to the second reaction zone. The second reaction zone is connected to the first exhaust zone of the first printing machine through a second conveying branch pipe and receives The exhaust gas discharged from the first exhaust zone and the second exhaust zone collect the exhaust gas. The gas collecting header is connected to the second exhaust zone and delivers exhaust gas discharged from the second exhaust zone.

Description

Exhaust system for printing machine in printing industry

The invention relates to an exhaust system, in particular to an exhaust system for printing machines in the printing industry.

The widely used organic solvents are easily volatile into gases at room temperature, so they are also known as volatile organic compounds (Volatile Organic Compounds, VOCs). Most VOCs are toxic to the human body and must be treated.

Referring to FIG. 1, the existing exhaust system for multiple printing presses includes an intake manifold 91, a heater 92, multiple delivery branch pipes 93, multiple printing presses 94, a gas collecting manifold 95, and a purification device 96. The intake manifold 91 is used to convey gas. The heater 92 is disposed on the conveying path of the intake manifold 91, and each of the printing presses 94 includes an ink tank 98 containing ink, a reaction zone 941, and an exhaust zone 942. The reaction zones of the printing presses 94 941 are respectively connected to the intake manifold 91 through the delivery branch pipes 93, and the exhaust zones 942 are connected to the collector manifold 95, so that the total collector air volume of the collector manifold 95 is each exhaust zone The sum of the collected air volume discharged by 942. Since the equipment cost and the operating cost of the purification device 96 are directly proportional to the total gas collection air volume that must be processed, the exhaust zones 942 are connected to the gas collection header in parallel The design method of 95 will cause the equipment specifications of the purification device 96 to be improved, thereby increasing the overall equipment cost and operating cost.

Also, referring to FIG. 2, another aspect of the existing exhaust system for multiple printing presses includes an intake manifold 91, multiple heaters 92, multiple conveying branch pipes 93, multiple printing presses 94, and an episode Gas main pipe 95, and a purification device 96. The heater 92 is connected to the intake manifold 91, the reaction zones 941 of the printing presses 94 are respectively connected to the corresponding heaters 92 through the conveying branch pipes 93, and the exhaust zones 942 are connected to the manifold In the gas header 95, similarly, the total air collection air volume of the air collection header 95 is the sum of the air collection air volume discharged from each exhaust zone 942. Therefore, the design method in which the exhaust zones 942 are connected in parallel to the gas collecting header 95 will cause the equipment specifications of the purification device 96 to be improved, thereby increasing the overall equipment cost and operating cost.

Therefore, one of the objects of the present invention is to provide an exhaust system for multiple printing machines that reduces the total air collection air volume discharged into an air collection header.

Therefore, in some embodiments, the exhaust system of the present invention for multiple printing presses includes: an intake manifold, a first heater, a first printing press, a second printing press, and an episode Gas main. The intake manifold is used to transport gas. The first heater is connected to the intake manifold and heats the gas. The first printing machine includes a first reaction zone, a first exhaust zone connected to the first reaction zone, and a first ink tank containing liquid raw materials, the first reaction zone is connected through a first conveying branch pipe On the first heating It also receives the heated gas, the first reaction zone reacts the heated gas with a printed product dipped in the liquid raw material to generate exhaust gas, and the first exhaust zone collects the exhaust gas. The second printing machine includes a second reaction zone, a second exhaust zone connected to the second reaction zone, and a second ink tank containing liquid raw materials, the second reaction zone is connected through a second conveying branch pipe In the first exhaust zone of the first printing press and receiving the exhaust gas discharged from the first exhaust zone, the second reaction zone reacts the exhaust gas with a printed product that dipped in the liquid raw material to generate exhaust gas, the The second exhaust zone collects the exhaust gas. The gas collecting header is connected to the second exhaust zone and delivers the exhaust gas discharged from the second exhaust zone.

In some embodiments, the exhaust system for multiple printing machines further includes a second heater, and the second heater is disposed on the conveying path of the second conveying branch pipe.

In some embodiments, the exhaust system for multiple printing machines further includes a dehumidification device, which is disposed on the conveying path of the intake manifold and used for dehumidification.

The present invention has at least the following effects: connecting the first exhaust area of the first printing machine to the second reaction area of the second printing machine through the second conveying branch pipe, so that the second reaction area receives the first row The exhaust gas discharged from the gas area; and then connected to the gas collecting header by the second exhaust area, so that the second exhaust area can discharge all the exhaust gas into the gas collecting header, so that the gas collecting header only Receiving the collected air volume of the second exhaust area, rather than conventionally receiving the total collected air volume of all exhaust areas, so that The equipment specifications of a purification device need not be too high, thereby reducing equipment costs and operating costs.

1: intake manifold

2. 2a~2d: heater

3a~3d: conveyor branch

4a~4d: printing machine

41: Reaction area

42: Exhaust area

5: Gas collector

6: Purification device

7: Dehumidification equipment

8: ink tank

91: intake manifold

92: Heater

93: conveyor branch

94: printing machine

95: Gas Collector

96: Purification device

98: ink tank

941: Reaction area

942: Exhaust area

Other features and functions of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a schematic diagram of a conventional exhaust system for multiple printing machines; FIG. 2 is a conventional Another schematic diagram of the exhaust system of multiple printing machines; FIG. 3 is a schematic diagram of a first embodiment of the exhaust system of the present invention for multiple printing machines; FIG. 4 is a schematic view of the present invention for multiple printing machines A schematic view of a second embodiment of the exhaust system; FIG. 5 is a schematic view of a third embodiment of the exhaust system of the present invention for multiple printing machines; FIG. 6 is a schematic view of the present invention for multiple printing machines A schematic diagram of a fourth embodiment of the exhaust system; FIG. 7 is a schematic diagram of a fifth embodiment of the exhaust system of the present invention for multiple printing machines; and FIG. 8 is a schematic view of the present invention for multiple printing machines A schematic diagram of a sixth embodiment of the exhaust system.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

Referring to FIG. 3, a first embodiment of an exhaust system for multiple printing machines of the present invention includes: an intake manifold 1, four heaters 2a-2d, four conveying branch pipes 3a-3d, and four printing machines Machines 4a-4d, a gas collecting header 5, and a purification device 6.

The intake manifold 1 is used to transport gas.

The heater 2a is connected to the intake manifold 1 and heats the gas. The printing presses 4a, 4b, 4c, 4d include a reaction zone 41, an exhaust zone 42 connected to the reaction zone 41, and an ink tank 8 containing liquid raw materials. In this embodiment, the liquid raw materials For printing ink and the reaction zone 41 is a baking zone, and the exhaust zone 42 can collect the exhaust gas generated by the reaction zone 41 and exhaust the exhaust gas. The reaction zone 41 of the printing machine 4a is connected to the heater 2a through the conveying branch pipe 3a and receives the heated gas, and then the reaction zone 41 of the printing machine 4a allows the heated gas and a liquid that dipped the liquid raw material Printed matter (not shown) reacts to produce exhaust gas.

The reaction zone 41 of the printing machine 4b is connected to the exhaust zone 42 of the printing machine 4a through the conveying branch pipe 3b and the heater 2b is provided on the conveying path of the conveying branch pipe 3b. The reaction zone 41 of the printing machine 4b is received by The exhaust gas discharged from the exhaust zone 42 of the printing machine 4a, and then the reaction zone 41 of the printing machine 4b reacts the exhaust gas with a printed product that dipped in the liquid raw material to generate exhaust gas, and then the exhaust zone of the printing machine 4b 42 close Collect the exhaust gas. Similarly, the reaction zone 41 of the printing press 4c is connected to the exhaust zone 42 of the printing press 4b through the transfer branch 3c and the heater 2c is provided on the transfer path of the transfer branch 3c, the reaction zone of the printing press 4c 41 receives the exhaust gas discharged from the exhaust zone 42 of the printing machine 4b, and then the reaction zone 41 of the printing machine 4c reacts the exhaust gas with a printed product dipped in the liquid raw material to generate exhaust gas, and the exhaust of the printing machine 4c The gas zone 42 collects the exhaust gas. Next, the reaction zone 41 of the printing machine 4d is connected to the exhaust zone 42 of the printing machine 4c through the conveying branch pipe 3d and the heater 2d is provided on the conveying path of the conveying branch pipe 3d, the reaction zone 41 of the printing machine 4d Receiving the exhaust gas discharged from the exhaust zone 42 of the printing machine 4c, and then the reaction zone 41 of the printing machine 4d causes the exhaust gas to react with a printed product dipped in the liquid raw material to generate exhaust gas, the exhaust of the printing machine 4d Zone 42 collects the exhaust gas.

The gas collecting header 5 is connected to the exhaust area 42 of the printing machine 4d and the purification device 6, and the gas collecting header 5 delivers the exhaust gas discharged from the exhaust area 42 of the printing machine 4d to the purification device 6. Since the printing presses 4a, 4b, 4c, and 4d are connected in series, the exhaust gases to be discharged by the printing presses 4a, 4b, 4c, and 4d are only discharged through the exhaust area 42 of the printing press 4d. The amount of collected air received by the gas collecting header 5 can be reduced, so that the equipment specification of the purification device 6 does not need to be too high, thereby further reducing equipment costs and operating costs.

In particular, in this first embodiment, four printing machines 4a, 4b, 4c, 4d are used for description, but the first embodiment may also include only two or Three printing machines, even if the safety standards of exhaust gas concentration are not exceeded, the first embodiment may include more than five printing machines, not limited to the aspect disclosed in the first embodiment.

Referring to FIG. 4, one of the second embodiments of the exhaust system of the present invention for multiple printing machines is substantially the same as the first embodiment, but in the second embodiment, the exhaust system further includes a dehumidifying device 7. The dehumidification device 7 is provided on the conveying path of the intake manifold 1 and used for dehumidification. Furthermore, since the composition of the liquid raw material in the ink tank 8 has components such as pigments, resins and additives, which are After contact with the gas, chlorine gas will be generated, and the combination of chlorine gas and water gas will produce corrosive hydrogen chloride (HCl), which will cause the printer 4a, 4b, 4c, 4d to be corroded, thereby increasing the risk of damage. Therefore, the The dehumidifying device 7 of the second embodiment helps to reduce the moisture content, thereby reducing the risk of the printing presses 4a, 4b, 4c, 4d being corroded. In this way, not only can the printing quality be improved, but also the printing presses 4a, 4b can be extended , 4c, 4d service life, is more conducive to the back-end control equipment to deal with chlorine alone.

Referring to FIG. 5, a third embodiment of an exhaust system for multiple printing machines of the present invention includes: an intake manifold 1, a heater 2, four conveying branch pipes 3a-3d, and four printing machines 4a- 4d, a gas collecting main pipe 5, and a purification device 6. It should be noted that, in the third embodiment, the structures and functions of the printers 4a-4d are the same as those of the printers 4a-4d of the first embodiment, so they will not be repeated here.

The gas collecting main pipe 5 is connected to the purification device 6, and the heater 2 is arranged at the On the delivery path of the intake manifold 1. The reaction zone 41 of the printing machine 4a is connected to the intake manifold 1 through the conveying branch pipe 3a; and the reaction zone 41 of the printing machine 4b is connected to the exhaust zone 42 of the printing machine 4a through the conveying branch pipe 3b. The exhaust area 42 of 4b is connected to the gas collecting header 5. Similarly, the reaction zone 41 of the printing press 4c is connected to the intake manifold 1 through the delivery branch 3c; and the reaction zone 41 of the printing machine 4d is connected to the exhaust zone 42 of the printing machine 4c through the delivery branch 3d, and The exhaust area 42 of the printing press 4d is connected to the gas collecting header 5.

In the third embodiment, since the delivery branch pipe 3b connects the exhaust zone 42 of the printing press 4a to the reaction zone 41 of the printing press 4b, the printing press 4b receives the exhaust gas discharged by the printing press 4a, In this way, the exhaust gas to be discharged by the printing press 4a and the printing press 4b is only discharged to the gas collecting header 5 through the exhaust area 42 of the printing press 4b; similarly, the printing press 4c and the printing press 4d All the exhaust gas to be discharged is discharged to the gas collecting header 5 only through the exhaust area 42 of the printing machine 4d. Therefore, the third embodiment can also reduce the equipment cost and operating cost of the purification device 6.

Referring to FIG. 6, a fourth embodiment of an exhaust system for multiple printing machines according to the present invention is substantially the same as the third embodiment. However, in the fourth embodiment, the exhaust system further includes a dehumidifier 7. The dehumidification device 7 is arranged on the conveying path of the intake manifold 1 and used for dehumidification, which helps to reduce the moisture content, thereby reducing the risk of damage to the printing presses 4a, 4b, 4c, 4d.

Referring to FIG. 7, the present invention is used in one of the exhaust systems of multiple printing machines The embodiment is substantially the same as the fourth embodiment, except that in the fifth embodiment, the exhaust system includes four heaters 2a-2d, and the heaters 2a-2d are respectively disposed in the delivery branch pipes 3a -On the 3d conveying path, this can make the gas heating effect better.

Referring to FIG. 8, a sixth embodiment of an exhaust system for multiple printing machines of the present invention is substantially the same as the fifth embodiment. However, in the sixth embodiment, the exhaust system does not include the dehumidification equipment 7.

In summary, the exhaust system for multiple printing machines of the present invention connects the exhaust zone 42 of the printing machine 4a to the reaction zone 41 of the printing machine 4b through the delivery branch pipe 3b, so that the printing machine 4b receives The exhaust gas discharged by the printing machine 4a, so that the exhaust gas to be discharged by the printing machine 4a and the printing machine 4b is only discharged through the exhaust area 42 of the printing machine 4b, so the series connected Such as a printing machine, can reduce the amount of air collected by the gas collecting header 5, so that the equipment specifications of a purification device 6 connected to the gas collecting header 5 need not be too high, thereby reducing equipment costs and operating costs; , The printing machines connected in this series can save the energy used by the heater, because the heater can use the waste heat of the exhaust gas discharged by the previous printing machine as the next heating base, thereby saving heating energy; In addition, the printing machines are connected in series, so that the amount of air collected by the gas collecting header 5 can be greatly reduced, which can not only reduce the horsepower required by the windmill, but also save the electricity required by the windmill, so It can indeed achieve the purpose of cost invention.

However, the above are only the embodiments of the present invention. This limits the scope of implementation of the present invention, and any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification still fall within the scope of the present invention.

1‧‧‧ Intake manifold

2. 2a~2d‧‧‧heater

3a~3d‧‧‧Transport branch pipe

4a~4d‧‧‧Printing machine

41‧‧‧Reaction area

42‧‧‧Exhaust area

5‧‧‧Gas Collector

6‧‧‧ Purification device

7‧‧‧Dehumidification equipment

8‧‧‧Ink tank

Claims (3)

An exhaust system for multiple printing presses includes: an intake manifold for conveying gas; a first heater connected to the intake manifold and heating the gas; a first printing press including a first A reaction zone, a first exhaust zone connected to the first reaction zone, and a first ink tank containing liquid raw materials, the first reaction zone is connected to the first heater through a first delivery branch pipe and receives The heated gas, the first reaction zone reacts the heated gas with a printed product that dipped in the liquid raw material to generate exhaust gas, and the first exhaust zone collects the exhaust gas; a second printing machine, including a first Two reaction zones, a second exhaust zone connected to the second reaction zone, and a second ink tank containing liquid raw materials, the second reaction zone is connected to the first printing machine through a second conveying branch pipe An exhaust area receives the exhaust gas discharged from the first exhaust area, the second reaction area reacts the exhaust gas with a printed material dipped in the liquid raw material to generate exhaust gas, and the second exhaust area collects the exhaust gas ; And a gas collecting header connected to the second exhaust zone and transporting the exhaust gas discharged by the second exhaust zone. The exhaust system for multiple printing machines as described in claim 1 further includes a second heater, and the second heater is provided on the conveying path of the second conveying branch pipe. The exhaust system for multiple printing machines as described in claim 2 further includes a dehumidification device, which is provided on the conveying path of the intake manifold and used for dehumidification.

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