Connecting device for collecting and recycling organic gas in coating and drying process

Abstract

The utility model provides a connecting device for collecting and recycling organic gas in a coating and drying process, and relates to the technical field of coating and drying. The connecting device for collecting and recycling the organic gas in the coating and drying process comprises a connecting body, and the connecting body is provided with a connecting cavity. According to the connecting device for collecting and recycling the organic gas in the coating and drying process, by arranging the single variable-frequency regulating valve, the exhaust speed and the exhaust amount of the organic gas can be accurately controlled, production and quality stability are ensured, and the situation that the wind direction and the wind speed in a drying box and the stability of the temperature of the drying box are affected due to excessive exhaust of the organic gas is effectively prevented; the surface of the photosensitive liquid which is coated on the surface of the aluminum plate and is not dried generates wind lines and wind patterns, so that a product is scrapped; and the problems that solvent steam cannot be discharged in time, the temperature of the drying oven is increased, 'solvent drops' are formed in the drying oven and drop to the plate surface, waste products are generated, and even explosion danger is generated due to overhigh steam pressure are effectively prevented due to the fact that the discharge speed and discharge amount of organic gas are too small.

Description

TECHNICAL FIELD

[0001] The utility model relates to organic gas collection and recovery connecting device, concretely is connecting device for organic gas collection and recovery in coating and drying process, belongs to coating and drying technical field. BACKGROUND

[0002] In the photosensitive agent coating and drying process of CTP plate production process, because the preparation of photosensitive liquid adopts organic solvents such as propylene glycol methyl ether, therefore a certain amount of organic waste gas will be produced, the original mode is to use activated carbon adsorption, catalytic combustion or regenerative combustion (RTO) and other environmental protection facilities to handle, ensure that tail gas reaches the standard discharge, with the continuous improvement of enterprise to carbon dioxide emission, energy saving, cost reduction requirement, enterprises gradually begin to establish relevant devices, and organic gas is collected, condensed, purified and so on to realize the reuse of organic solvents, further reduce cost, reduce carbon dioxide emission, therefore coating and drying organic gas collection and recovery device arises at the historic moment.

[0003] The coating and drying process organic gas collection and recovery device in the prior art can reduce the direct emission of these gases into the atmosphere by collecting and recycling organic gases, thereby reducing environmental pollution. This is of great significance for reducing the emission of volatile organic compounds (VOCs), improving air quality, and reducing damage to the ozone layer. Recycling organic gases can convert them into valuable resources, such as recycling organic solvents through condensation, adsorption, etc. This not only reduces production costs, but also creates additional economic value. Some connecting devices are equipped with a waste heat recovery system that can recover heat energy from waste gas for heating requirements of the solution and coating and drying process of the CTP production line, thereby reducing energy consumption and improving energy utilization efficiency. However, the production line oven pipeline and organic gas condensation and liquefaction device in the prior art can cause temperature fluctuations, air volume fluctuations, waste gas backflow, solvent dripping and other abnormal phenomena. Therefore, we provide a coating and drying process organic gas collection and recovery connecting device to solve the above problems. SUMMARY

[0004] To solve the above problems, the utility model provides a coating and drying process organic gas collection and recovery connecting device to solve the above problems, and the specific technical scheme is:

[0005] The utility model provides a connecting device for organic gas collection and recovery in coating drying process, comprising a connecting body, the connecting body is provided with a connecting cavity, the connecting body is provided with a one-way air introduction window, the one-way air introduction window is connected with an organic gas conveying pipeline, the organic gas conveying pipeline is provided with a one-way air valve, the one-way air introduction window is installed with a grating plate, the connecting body is provided with a plurality of first through holes, the connecting body is provided with a plurality of frequency conversion adjustment one-way valves, the connecting body is provided with a second through hole, the connecting body is provided with a connecting pipe, the connecting pipe is provided with a residual solvent discharge valve, and the connecting body is provided with a sealing plate.

[0006] Preferably, the connecting cavity is connected with the one-way air introduction window, and the connecting cavity is connected with the first through hole.

[0007] Preferably, the frequency conversion adjustment one-way valve is fixedly installed outside the connecting body, and the input end of the frequency conversion adjustment one-way valve is connected with the first through hole.

[0008] Preferably, the output end of the frequency conversion adjustment one-way valve is connected with a production line solvent evaporation pipeline, and the second through hole is connected with the connecting cavity.

[0009] Preferably, the connecting pipe is fixedly connected to the outside of the connecting body, and the input end of the connecting pipe is connected with the second through hole.

[0010] Preferably, the output end of the connecting pipe is connected with the input end of the residual solvent discharge valve, and the connecting body is fixedly connected with the sealing plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The connecting device for organic gas collection and recovery in coating drying process can accurately control the discharge speed and discharge amount of organic gas by setting the single frequency conversion adjustment valve, ensure the stability of production and quality, prevent the discharge of too much organic gas, affect the stability of the wind direction, wind speed and oven temperature in the drying box, cause the "wind pattern and wind flower" on the surface of the photosensitive liquid that has not been dried on the surface of the aluminum plate, and cause the product to be scrapped, and effectively prevent the discharge speed and discharge amount of organic gas from being too small, so that the solvent vapor cannot be discharged in time, the oven temperature rises, and "solvent drops" are formed in the oven, which drop on the plate surface and also produce waste products, and even cause explosion danger due to too high steam pressure.

[0013] 2. The connecting device for organic gas collection and recovery in coating drying process is provided with a one-way air valve, so that the system pressure is constant, the system safety is increased, the device is simple to adjust, and once adjusted, no special person is needed to control. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1This is a three-dimensional front view structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional front view exploded view of the present invention;

[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] Figure descriptions: 1. Connector; 2. Connecting cavity; 3. One-way air inlet window; 4. Grille plate; 5. First through hole; 6. Variable frequency control one-way valve; 7. Second through hole; 8. Connecting pipe; 9. Residual solvent discharge valve; 10. Sealing plate. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] Please see Figure 1 , Figure 2 , Figure 3 The system includes a connector 1, a connecting cavity 2, and a one-way air inlet window 3 connected to an organic gas delivery pipeline. The organic gas delivery pipeline is equipped with a one-way air valve. The one-way air inlet window 3 is fitted with a grille 4. The connector 1 has multiple first through holes 5 and multiple frequency-controlled one-way valves 6. The connector 1 has second through holes 7 and a connecting pipe 8 with a residual solvent discharge valve 9. The connector 1 also has a sealing plate 10. The connecting cavity 2 is connected to the one-way air inlet window 3. The window 3 is connected, the connecting cavity 2 is connected to the first through hole 5, the frequency conversion regulating one-way valve 6 is fixedly installed on the outside of the connecting body 1, the input end of the frequency conversion regulating one-way valve 6 is connected to the first through hole 5, the output end of the frequency conversion regulating one-way valve 6 is connected to the solvent evaporation pipeline of the production line, the second through hole 7 is connected to the connecting cavity 2, the connecting pipe 8 is fixedly connected to the outside of the connecting body 1, the input end of the connecting pipe 8 is connected to the second through hole 7, the output end of the connecting pipe 8 is connected to the input end of the residual solvent discharge valve 9, and the connecting body 1 is fixedly connected to the sealing plate 10.

[0020] The frequency conversion regulating one-way valve 6 in the application is prior art and is not described in detail. By arranging the single frequency conversion regulating valve, the organic gas discharge speed and discharge amount can be accurately controlled, the production and quality stability can be ensured, the excessive discharge of the organic gas can be effectively prevented, the wind direction, wind speed and oven temperature stability in the drying box can be affected, the "wind lines and wind flowers" can be caused on the photosensitive liquid surface on the aluminum plate surface which is not dried, the product is scrapped, the excessive discharge speed and discharge amount of the organic gas can be effectively prevented, the solvent vapor cannot be discharged in time, the oven temperature is increased, the "solvent drops" are formed in the oven, the waste product is caused, and even the explosion risk is caused due to the excessively high steam pressure. By arranging the one-way air valve, the system constant pressure can be ensured, and the system safety is increased. The device is simple to adjust, and after one-time adjustment, no special person is needed to control.

[0021] In use, the one-way air introduction window 3 is connected in communication with the organic gas conveying pipeline, the output end of the frequency conversion regulating one-way valve 6 is connected in communication with the production line solvent evaporation pipeline, the organic gas is conveyed to the inside of the connecting body 1 through the organic gas conveying pipeline, the one-way air valve arranged on the organic gas conveying pipeline controls the organic gas pressure balance, then the frequency conversion regulating one-way valve 6 is cooperated to accurately control the organic gas discharge speed and discharge amount, the production and quality stability is ensured, the single frequency conversion regulating valve is arranged, the organic gas discharge speed and discharge amount can be accurately controlled, the production and quality stability is ensured, the excessive discharge of the organic gas is effectively prevented, the wind direction, wind speed and oven temperature stability in the drying box are affected, the "wind lines and wind flowers" are caused on the photosensitive liquid surface on the aluminum plate surface which is not dried, the product is scrapped, the excessive discharge speed and discharge amount of the organic gas is effectively prevented, the solvent vapor cannot be discharged in time, the oven temperature is increased, the "solvent drops" are formed in the oven, the waste product is caused, and even the explosion risk is caused due to the excessively high steam pressure, and the practicability of the device is realized.

[0022] The technical principle of the utility model is described above in combination with specific embodiments. The description is only for explaining the principle of the utility model, and cannot be explained as the limitation of the protection scope of the utility model in any way. Based on the explanation herein, the other specific embodiments of the utility model can be thought of by the person skilled in the art without the creative labor, and these embodiments will fall into the protection scope of the claims of the utility model.

Claims

1. A connecting device for collecting and recovering organic gases in a coating and drying process, comprising a connecting body (1), characterized in that: The connecting body (1) is provided with a connecting cavity (2), the connecting body (1) is provided with a one-way air introduction window (3), the one-way air introduction window (3) is connected with an organic gas conveying pipeline in communication, the organic gas conveying pipeline is provided with a one-way air valve, the one-way air introduction window (3) is provided with a grating plate (4), the connecting body (1) is provided with a plurality of first through holes (5), the connecting body (1) is provided with a plurality of frequency conversion adjustment one-way valves (6), the connecting body (1) is provided with a second through hole (7), the connecting body (1) is provided with a connecting pipe (8), the connecting pipe (8) is provided with a residual solvent discharge valve (9), and the connecting body (1) is provided with a sealing plate (10).

2. The connecting device for collecting and recovering organic gas in a coating and drying process according to claim 1, characterized in that: The connecting cavity (2) is connected with the one-way air introduction window (3) in communication, and the connecting cavity (2) is connected with the first through hole (5) in communication.

3. The connecting device for collecting and recovering organic gas in a coating and drying process according to claim 2, characterized in that: The frequency conversion adjustment one-way valve (6) is fixedly installed outside the connecting body (1), and the input end of the frequency conversion adjustment one-way valve (6) is connected with the first through hole (5) in communication.

4. The connecting device for collecting and recovering organic gas in a coating and drying process according to claim 3, characterized in that: The output end of the frequency conversion adjustment one-way valve (6) is connected with a production line solvent evaporation pipeline in communication, and the second through hole (7) is connected with the connecting cavity (2) in communication.

5. The connecting device for collecting and recovering organic gas in a coating and drying process according to claim 4, characterized in that: The connecting pipe (8) is fixedly connected to the outside of the connecting body (1), and the input end of the connecting pipe (8) is connected with the second through hole (7) in communication.

6. The connecting device for collecting and recovering organic gas in a coating and drying process according to claim 5, characterized in that: The output end of the connecting pipe (8) is connected with the input end of the residual solvent discharge valve (9) in communication, and the connecting body (1) is fixedly connected with the sealing plate (10).

Images