A waste gas collecting device for a crystal hot-fixing process

Abstract

The utility model discloses a kind of waste gas collecting devices in crystal hot diamond plating film process, it is related to waste gas treatment technical field, including gas collecting hood and mounting plate, the upper end of the gas collecting hood is equipped with profiled pipe, the upper end of the mounting plate is sequentially equipped with prefiltering device, condensation recovery component, fine filter device and air draught fan from left to right, the upper end of the mounting plate is equipped with control system, the inner wall of the profiled pipe is equipped with pressure sensor, the inner wall of the gas collecting hood is equipped with concentration sensor.The utility model, by prefiltering device, condensation recovery component, fine filter device and the multistage processing of activated carbon adsorption tower, gradually remove dust, volatile organic compounds and other harmful substances in waste gas, so that waste gas is fully purified, meet environmental protection emission requirement.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a waste gas collection device for the crystal hot-stamping coating process. Background Technology

[0002] Crystal rhinestones, widely used in clothing, footwear, and accessories, typically undergo a coating process during production to impart high gloss, wear resistance, and corrosion resistance. Coating processes (such as vacuum coating and chemical coating) generate large amounts of waste gas containing harmful substances due to high-temperature heating, chemical reactions, or physical evaporation. These substances mainly include volatile organic compounds, metal oxide dust, and acidic / alkaline gases.

[0003] However, in the existing technology, the industry mostly uses simple collection devices for the collection of waste gas in the crystal hot-fix coating process, which has the following technical defects: the existing devices can only realize the simple transportation of waste gas without pre-treatment of the waste gas. The large amount of metal oxide dust contained in the waste gas directly enters the subsequent treatment system (such as adsorption tower, combustion device, etc.), which can easily cause pipeline blockage, catalyst poisoning or adsorption material failure, reduce the overall operating efficiency and stability of the treatment system, and also increase the treatment cost. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a waste gas collection device for the crystal hot-fix coating process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a waste gas collection device for the crystal hot-dip rhinestone coating process, comprising a gas collection hood and a mounting plate. A special-shaped tube is installed at the upper end of the gas collection hood. From left to right, a pre-filter, a condensation recovery component, a fine filter, and an induced draft fan are sequentially installed at the upper end of the mounting plate. A control system is installed at the upper end of the mounting plate. A pressure sensor is installed on the inner wall of the special-shaped tube, and a concentration sensor is installed on the inner wall of the gas collection hood.

[0006] Preferably, the other end of the shaped tube is fixed to the air inlet of the pre-filter, and the air inlet of the condensation recovery component is fixed to the air outlet of the pre-filter.

[0007] Preferably, the air outlet of the condensation recovery component is fixed to the air inlet of the induced draft fan, and the induced draft fan, pressure sensor and concentration sensor are all connected to the control system signal.

[0008] Preferably, an activated carbon adsorption tower is provided on one side of the mounting plate, and a flexible sealing curtain is installed inside the gas collecting hood.

[0009] Preferably, the exhaust port of the induced draft fan is equipped with a connecting pipe, and two sets of mounting seats are installed on both sides of the air collection hood.

[0010] Preferably, the other end of the connecting pipe is fixed to the air inlet of the activated carbon adsorption tower, and the mounting plate is located on one side of the gas collection hood.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, through multi-stage treatment including a pre-filtration device, a condensation recovery component, a fine filtration device, and an activated carbon adsorption tower, harmful substances such as dust and volatile organic compounds in the waste gas are gradually removed, so that the waste gas is fully purified and meets environmental emission requirements. Secondly, the condensation recovery component can condense and recover the volatile organic compounds in the waste gas, realize resource reuse, reduce the production cost of enterprises, and have both environmental and economic benefits.

[0013] 2. In this utility model, the control system receives signals from the pressure sensor and the concentration sensor, and automatically adjusts the operating status of the induced draft fan to realize intelligent operation of the equipment, reduce manual operation, and improve the stability and reliability of the equipment operation.

[0014] 3. In this utility model, the gas collection hood, combined with the flexible sealing curtain, can effectively reduce exhaust gas leakage. Combined with the negative pressure generated by the induced draft fan, it can significantly improve the exhaust gas collection rate. The reasonable design of the special-shaped pipe ensures the smoothness of exhaust gas transportation and reduces airflow resistance. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a waste gas collection device for the crystal hot-fix rhinestone coating process;

[0016] Figure 2 This utility model provides a front structural schematic diagram of a waste gas collection device for the crystal hot-fix rhinestone coating process;

[0017] Figure 3 A bottom view of the mounting plate and gas collection hood of the waste gas collection device for the crystal hot-rhine coating process is provided for this utility model;

[0018] Figure 4 The present invention provides a bottom view of the gas collection hood of a waste gas collection device for the crystal hot-rhine coating process.

[0019] Legend: 1. Gas collection hood; 2. Mounting plate; 3. Irregularly shaped pipe; 4. Activated carbon adsorption tower; 5. Pre-filtration device; 6. Condensation recovery assembly; 7. Control system; 8. Fine filtration device; 9. Exhaust fan; 10. Connecting pipe; 11. Flexible sealing curtain; 12. Mounting base; 13. Pressure sensor; 14. Concentration sensor. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a waste gas collection device for the crystal hot-dip rhinestone coating process, including a gas collection hood 1 and a mounting plate 2. A special-shaped tube 3 is installed on the upper end of the gas collection hood 1. From left to right, a pre-filter 5, a condensation recovery component 6, a fine filter 8, and an induced draft fan 9 are installed on the upper end of the mounting plate 2. A control system 7 is installed on the upper end of the mounting plate 2. A pressure sensor 13 is installed on the inner wall of the special-shaped tube 3, and a concentration sensor 14 is installed on the inner wall of the gas collection hood 1. The other end of the special-shaped tube 3 is fixed to the air inlet of the pre-filter 5. The air inlet of the condensation recovery component 6 is fixed to the air outlet of the pre-filter 5, and the air outlet of the condensation recovery component 6 is fixed to the air inlet of the induced draft fan 9. The induced draft fan 9, the pressure sensor 13, and the concentration sensor 14 are all connected to the control system 7.

[0023] The specific settings and functions of this embodiment are described in detail below. The gas collection hood 1, as the core component of the front end of the exhaust gas collection, is shaped and sized to fit the crystal hot-drill coating equipment, and can accurately cover the coating reaction area. A special-shaped tube 3 is installed at the upper end of the gas collection hood 1. Its shape is customized according to the position of the air outlet of the gas collection hood 1 and the air inlet of the subsequent pre-filter device 5 to ensure that the exhaust gas can flow smoothly. A pressure sensor 13 is installed on the inner wall of the special-shaped tube 3, which can monitor the air pressure in the pipe in real time and provide data for the control system 7 to adjust the speed of the induced draft fan 9. A concentration sensor 14 is installed on the inner wall of the gas collection hood 1 to detect the concentration of exhaust gas in the gas collection hood 1 in real time so as to adjust the equipment operating parameters in a timely manner.

[0024] Processing and conveying components:

[0025] Mounting plate 2 is located on one side of gas collection hood 1. It serves as the foundation for supporting various processing and conveying components. It is made of high-strength metal material to ensure sufficient load-bearing capacity and stability. From left to right, the upper end of mounting plate 2 is equipped with a pre-filter 5, a condensate recovery component 6, a fine filter 8, and an induced draft fan 9. The components are connected by sealed pipes to form an orderly waste gas treatment process.

[0026] The pre-filter 5 has its air inlet fixed to the other end of the shaped tube 3. It is equipped with multiple layers of filters, including a primary filter and a medium-efficiency filter, which can effectively intercept large particles of metal oxide dust, flocculent matter and other impurities in the exhaust gas, preventing these impurities from entering the subsequent condensation recovery component 6 and avoiding blockage of the condensation coil or affecting the condensation efficiency.

[0027] The air inlet of the condensation recovery component 6 is fixed to the air outlet of the pre-filter device 5. It is equipped with a condensation coil and a liquid collection tank. After the pre-filtered waste gas enters the condensation recovery component 6, the temperature of the waste gas decreases under the action of the condensation coil. The volatile organic compounds (such as the volatile organic solvents used in the coating process) in the gas condense into liquid as they reach the dew point and flow into the liquid collection tank for collection, thereby realizing the recycling and reuse of resources.

[0028] The fine filtration device 8 is located between the condensation recovery component 6 and the induced draft fan 9. It uses a combination of high-efficiency filter screen and activated carbon filter screen inside, which can further filter the fine particulate matter and small amount of volatile organic compounds that are not condensed in the exhaust gas, improve the purification level of the exhaust gas, and reduce the burden on subsequent treatment equipment. The air inlet of the induced draft fan 9 is fixed to the air outlet of the condensation recovery component 6 (after passing through the fine filtration device 8).

[0029] The control system 7 is installed on the upper end of the mounting plate 2 and adopts a PLC control module. The induced draft fan 9, pressure sensor 13 and concentration sensor 14 are all connected to the control system 7. The control system 7 receives the pressure data in the pipeline detected by the pressure sensor 13 and the exhaust gas concentration data detected by the concentration sensor 14. When the pressure is abnormal or the exhaust gas concentration exceeds the preset threshold, the speed of the induced draft fan 9 is automatically adjusted to ensure the negative pressure in the gas collection hood 1 is stable and improve the exhaust gas collection efficiency. At the same time, if an abnormal situation occurs, the control system 7 can also issue an alarm signal to remind the staff to deal with it in time.

[0030] Example 2: Figure 1 , Figure 2 and Figure 4 As shown, an activated carbon adsorption tower 4 is installed on one side of the mounting plate 2, a flexible sealing curtain 11 is installed inside the gas collection hood 1, a connecting pipe 10 is installed at the air outlet of the induced draft fan 9, two sets of mounting seats 12 are installed on both sides of the gas collection hood 1, and the other end of the connecting pipe 10 is fixed to the air inlet end of the activated carbon adsorption tower 4. The mounting plate 2 is located on one side of the gas collection hood 1.

[0031] The overall effect of this embodiment is that the exhaust fan 9 is equipped with a connecting pipe 10 at its outlet, and the other end of the connecting pipe 10 is fixed to the air inlet of the activated carbon adsorption tower 4 set on one side of the mounting plate 2. The exhaust fan 9 provides power for the flow of exhaust gas. Under its action, a negative pressure is formed in the gas collection hood 1, which allows the exhaust gas to smoothly enter the treatment system and finally be sent to the activated carbon adsorption tower 4 for deep purification.

[0032] The inside of the gas collection hood 1 is equipped with a flexible sealing curtain 11. The sealing curtain is made of heat-resistant and corrosion-resistant silicone material, which can fit tightly against the surface of the coating equipment to minimize the leakage of exhaust gas from the gap between the gas collection hood 1 and the equipment and enhance the sealing performance of the collection.

[0033] Two sets of mounting bases 12 are installed on both sides of the gas collection hood 1. The gas collection hood 1 can be stably fixed to the bracket or the ground next to the coating equipment through the mounting bases 12, so as to ensure that its position is stable during operation and avoid the collection effect being affected by vibration and other factors.

[0034] The operating method and working principle of this device are as follows: When the coating equipment is started and generates exhaust gas, the induced draft fan 9 starts under the initial command of the control system 7. It forms a negative pressure in the entire air path through the special-shaped pipe 3. At this time, because the internal air pressure of the gas collection hood 1 is lower than that of the outside, it quickly draws the exhaust gas (including VOCs, metal oxide dust, etc.) generated in the coating reaction area into the hood. The flexible sealing curtain 11 is tightly attached to the surface of the coating equipment, blocking the path of exhaust gas from the gaps and ensuring that most of the exhaust gas is captured by the gas collection hood 1. A small amount of edge exhaust gas that is not captured by the main hood will also converge towards the gas collection hood 1 under the action of negative pressure, further improving the collection efficiency.

[0035] The collected exhaust gas enters the conveying stage through the special-shaped tube 3 at the upper end of the gas collection hood 1. The customized shape of the special-shaped tube 3 reduces airflow resistance, allowing the exhaust gas to flow smoothly to the pre-filter device 5. During this process, the pressure sensor 13 on the inner wall of the special-shaped tube 3 monitors the gas pressure in the pipe in real time, and the concentration sensor 14 on the inner wall of the gas collection hood 1 detects the exhaust gas concentration simultaneously. Both transmit the data to the control system 7 in real time to provide a basis for subsequent regulation.

[0036] The exhaust gas first enters the pre-filtration device 5, where the primary and secondary filters intercept large particles of metal oxide dust, flocculent matter, and other impurities, preventing these solid pollutants from entering subsequent equipment. After pre-filtration, the exhaust gas flows into the condensation and recovery assembly 6. Under the low temperature of the condensation coil, the volatile organic compounds (such as organic solvent volatiles) in the exhaust gas condense into liquid as the temperature drops below the dew point, dripping into the liquid recovery tank for recovery and recycling as raw materials. The uncondensed gaseous components (containing a small amount of VOCs and small molecule gases) continue to be transported forward.

[0037] Next, the exhaust gas enters the fine filtration device 8, where the high-efficiency filter and activated carbon filter further adsorb the remaining fine particulate matter and a small amount of VOCs, reducing the concentration of pollutants in the exhaust gas. The purified exhaust gas is then sent to the activated carbon adsorption tower 4 through the connecting pipe 10 under the suction of the induced draft fan 9. The strong adsorption properties of activated carbon are used to deeply treat the remaining trace pollutants, and finally the exhaust gas is discharged after meeting the emission standards.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A waste gas collection device for a crystal hot-fix rhinestone coating process, comprising a gas collection hood (1) and a mounting plate (2), characterized in that: The upper end of the gas collection hood (1) is equipped with a special-shaped tube (3). The upper end of the mounting plate (2) is equipped with a pre-filter (5), a condensation recovery component (6), a fine filter (8) and an induced draft fan (9) from left to right. The upper end of the mounting plate (2) is equipped with a control system (7). The inner wall of the special-shaped tube (3) is equipped with a pressure sensor (13). The inner wall of the gas collection hood (1) is equipped with a concentration sensor (14).

2. The waste gas collection device for the crystal hot-fix rhinestone coating process according to claim 1, characterized in that: The other end of the shaped tube (3) is fixed to the air inlet of the pre-filter (5), and the air inlet of the condensation recovery assembly (6) is fixed to the air outlet of the pre-filter (5).

3. The waste gas collection device for the crystal hot-fix rhinestone coating process according to claim 2, characterized in that: The outlet of the condensation recovery assembly (6) is fixed to the inlet of the induced draft fan (9), and the induced draft fan (9), pressure sensor (13) and concentration sensor (14) are all connected to the control system (7) via signal.

4. The waste gas collection device for the crystal hot-fix rhinestone coating process according to claim 1, characterized in that: An activated carbon adsorption tower (4) is provided on one side of the mounting plate (2), and a flexible sealing curtain (11) is installed inside the gas collection hood (1).

5. The waste gas collection device for the crystal hot-fix rhinestone coating process according to claim 4, characterized in that: The exhaust port of the blower (9) is equipped with a connecting pipe (10), and two sets of mounting seats (12) are installed on both sides of the air collection hood (1).

6. The waste gas collection device for the crystal hot-fix rhinestone coating process according to claim 5, characterized in that: The other end of the connecting pipe (10) is fixed to the air inlet of the activated carbon adsorption tower (4), and the mounting plate (2) is located on one side of the gas collecting hood (1).

Images