Spraying waste gas absorption treatment method and system

Abstract

The invention discloses a spraying waste gas absorption treatment method and system, and relates to the technical field of spraying waste gas treatment.The method comprises the following steps that S1, a negative pressure absorption model is constructed according to waste gas characteristics corresponding to coating types; s2, constructing a shaking influence model according to the spraying element parameters and the negative pressure strength; s3, constructing an optimization objective function by taking the maximum negative pressure intensity as an optimization objective; s4, constructing a negative pressure adjustment model by using the negative pressure absorption model, the shake influence model and the optimization objective function; s5, the current coating type and the current spraying element parameters are obtained, and a negative pressure strength optimal solution is output according to the current coating type, the current spraying element parameters and the negative pressure adjusting model; and S6, spraying waste gas absorption treatment is executed by taking the optimal solution of the negative pressure intensity as parameters of the waste gas absorption device. The waste gas absorption device has the beneficial effects that the waste gas absorption requirements of different elements during spraying of different coatings are met, and the safety and stability in the spraying process are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying waste gas treatment, and in particular to a method and system for absorbing and treating spraying waste gas. Background Art

[0002] The exhaust gas in the paint shop mainly comes from the paint mist volatilized by the organic solvents contained in the paint during the spraying process and the volatile exhaust gas generated during the drying process, which is called volatile organic compounds (VOCs), and the main components are benzene, toluene, xylene, etc. Generally speaking, the VOCs (organic exhaust gas) generated during the use of mid-coat, top-coat and cleaning solvents have the highest content. Specifically in the production workshop, the spray paint room, airing room, paint mixing room, drying room, etc. generate the most organic exhaust gas, and the exhaust gas components generated by different workshops are not the same.

[0003] According to the composition structure of paint exhaust gas, the general treatment process equipment flow is: gas collection system-pretreatment spray dust system exhaust gas purification device system. When designing the pretreatment system, multi-stage spray washing or higher-level dust removal equipment (mechanical dust removal is recommended); in the exhaust gas purification process, if the air volume is large or the concentration is high, concentration can be considered, and catalytic thermal combustion process equipment can be used; if the concentration is low and the air volume is medium or low, activated carbon adsorption and desorption can be used.

[0004] In the related art, a fixed negative pressure intensity is usually used to absorb the spray exhaust gas. However, different spray exhaust gases require different negative pressure intensities. A fixed negative pressure intensity may cause the spray exhaust gas to exceed the standard, causing human injury or affecting the stability of the flexible suspended spray element.

[0005] The Chinese patent "Waste Gas Treatment System and Waste Gas Treatment Method", publication number: CN108212634A, publication date: June 29, 2018, specifically discloses a pre-treatment device, a circulating fan, a VOC treatment device, an exhaust tower and a post-treatment device; wherein the spraying workshop, the pre-treatment device, the circulating fan, the VOC treatment device and the post-treatment device are sequentially connected, and the post-treatment device is connected to the spraying workshop, and the post-treatment device is used to adjust the temperature and humidity of the gas before entering the spraying workshop; the exhaust tower is connected to the VOC treatment device. In this scheme, the treated purified gas that meets the emission standards replaces the air inhaled from the atmosphere by the original production equipment system, allowing it to be recycled again in the production process. Although the air circulation in the spraying room is improved, it cannot be automatically adjusted according to the spraying situation and cannot adapt to different spraying environments. Summary of the invention

[0006] In order to solve the problem in the prior art that a fixed absorption value is used for negative pressure absorption of spray exhaust gas, which cannot be adapted to different spray types and easily causes excessive exhaust gas concentration, the present invention provides a spray exhaust gas absorption treatment method and system, by constructing a negative pressure absorption model according to the negative pressure strength adapted to the paint type and constructing a sway influence model according to the influence of the negative pressure strength on the sway of different components, so as to take the maximum negative pressure strength as the optimization target, calculate the maximum negative pressure strength that is most suitable for the current paint type without affecting the sway of the component, and use the optimal solution of the negative pressure strength as the parameter of the exhaust gas absorption device to perform spray exhaust gas absorption treatment, so as to adapt to the exhaust gas absorption needs of different components when spraying different paints, and improve the safety and stability of the spraying process.

[0007] To achieve the above-mentioned technical objectives, the present invention provides a technical solution, which is a method for spraying waste gas absorption treatment, comprising the following steps: S1: constructing a negative pressure absorption model according to the waste gas characteristics corresponding to the paint type; S2: constructing a sway influence model according to the spray element parameters and the negative pressure intensity; S3: constructing an optimization objective function with the maximum negative pressure intensity as the optimization target; S4: constructing a negative pressure adjustment model with the negative pressure absorption model, the sway influence model and the optimization objective function; S5: obtaining the current paint type and the current spray element parameters, and outputting the optimal solution for the negative pressure intensity according to the current paint type, the current spray element parameters and the negative pressure adjustment model; S6: using the optimal solution for the negative pressure intensity as the exhaust gas absorption device parameter to perform spraying waste gas absorption treatment.

[0008] The present invention is further configured as follows: constructing a negative pressure absorption model according to the exhaust gas characteristics corresponding to the paint type includes: obtaining the exhaust gas characteristics corresponding to the paint type; selecting a first influencing factor according to the exhaust gas characteristics; obtaining historical spraying exhaust gas absorption data, and marking the first influencing factor weight according to the historical spraying exhaust gas absorption data; and constructing a negative pressure absorption model with the first influencing factor weight and the paint type.

[0009] The present invention is further configured as follows: constructing a sway influence model based on spray element parameters and negative pressure intensity includes: selecting a second influencing factor including at least negative pressure intensity based on the spray element parameters; obtaining historical spray element sway data, and marking the second influencing factor weight based on the historical spray element sway data; and constructing a sway influence model with the second influencing factor weight and spray element parameters.

[0010] The present invention is further configured as follows: the first influencing factor at least includes exhaust gas composition, exhaust gas concentration, ambient temperature and ambient humidity.

[0011] The present invention is further configured as follows: the second influencing factor at least includes the weight of the spraying component, the suspension method of the spraying component and the negative pressure intensity.

[0012] The present invention is further configured as follows: S5 also includes: determining whether the optimal solution of negative pressure strength meets the comfort threshold, if so, outputting the current optimal solution of negative pressure strength, if not, updating the optimal solution of negative pressure strength according to the comfort threshold.

[0013] The present invention is further configured as follows: S7: setting an exhaust gas concentration threshold, monitoring the exhaust gas parameters in the spray room in real time, and when the exhaust gas parameters in the spray room exceed the exhaust gas concentration threshold, executing an alarm prompt, and gradually increasing the negative pressure intensity after a first time period until the exhaust gas parameters in the spray room are lower than the exhaust gas concentration threshold.

[0014] The present invention is further configured as follows: S7 also includes: when the exhaust gas parameters in the spray room are lower than the exhaust gas concentration threshold, gradually reducing the negative pressure intensity to the minimum balanced negative pressure intensity, and using the minimum balanced negative pressure intensity as the exhaust gas absorption device parameter to perform spray exhaust gas absorption processing.

[0015] The present invention is further configured as follows: S7 also includes: when the minimum balanced negative pressure intensity is less than the comfort threshold, the difference between the minimum balanced negative pressure intensity and the optimal solution of the negative pressure intensity is used as a compensation value, and the first influencing factor weight and the second influencing factor weight of the negative pressure adjustment model are updated with the compensation value.

[0016] Another technical solution provided by the present invention is a spraying exhaust gas absorption treatment system, which is connected to the exhaust gas absorption device and is used to implement the method as mentioned above, including: a data acquisition module, used to collect the current paint type and the current spray element parameters; a data modeling module, used to construct a negative pressure absorption model according to the exhaust gas characteristics and to construct a sway influence model according to the sway characteristics; an optimization analysis module, used to construct a negative pressure adjustment model according to the optimization objective function, the negative pressure absorption model and the sway influence model, and output the optimal solution for the negative pressure intensity; an execution control module, used to adjust the exhaust gas absorption device parameters according to the optimal solution for the negative pressure intensity.

[0017] The beneficial effects of the present invention are as follows: a negative pressure absorption model and a shaking influence model are constructed according to the exhaust gas characteristics and the shaking characteristics of the spraying components, respectively, so as to use the model to show the changes in the demand for negative pressure strength of different types of coatings due to different exhaust gas characteristics, as well as the influence of negative pressure strength on the suspended spraying components. Then, the maximum negative pressure strength is used as the optimization target, and the maximum negative pressure strength for exhaust gas absorption is obtained under the premise of avoiding the shaking effect on the spraying components. This is used as the optimal solution for negative pressure strength to adjust the parameters of the exhaust gas absorption device, ensuring the exhaust gas absorption effect while ensuring the spraying stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic flow chart of the spraying waste gas absorption treatment method of the present invention; Figure 2 It is a structural schematic diagram of the spraying waste gas absorption and treatment system of the present invention.

[0019] In the figure: 1. Spraying room; 11. Air conditioner; 12. Spray station; 2. Drying room; 3. Hot air duct; 4. Equipment isolation room; 5. Dry exhaust gas filtration equipment; 6. Activated carbon box; 7. Filter exhaust fan; 8. External exhaust duct. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation method described herein is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1 As shown, as the first embodiment of the present invention, the spraying waste gas absorption treatment method includes the following steps: S1: Construct a negative pressure absorption model based on the exhaust gas characteristics corresponding to the coating type; S2: Construct a shaking influence model based on spray component parameters and negative pressure intensity; S3: Taking the maximum negative pressure intensity as the optimization target, construct the optimization objective function; S4: Construct a negative pressure adjustment model based on the negative pressure absorption model, sloshing impact model and optimization objective function; S5: obtaining the current coating type and the current spray component parameters, and outputting the optimal solution of negative pressure intensity according to the current coating type, the current spray component parameters and the negative pressure adjustment model; S6: Execute the spraying exhaust gas absorption process using the optimal solution of negative pressure intensity as the exhaust gas absorption device parameter.

[0022] In this embodiment, a negative pressure absorption model and a shaking influence model are constructed according to the exhaust gas characteristics and the shaking characteristics of the spraying element, respectively, so as to use the model to show the changes in the demand for negative pressure strength of different types of coatings due to different exhaust gas characteristics, as well as the influence of negative pressure strength on the suspended spraying elements. Then, the maximum negative pressure strength is used as the optimization target, and the maximum negative pressure strength for exhaust gas absorption is obtained under the premise of avoiding the shaking effect on the spraying elements. This is used as the optimal solution for negative pressure strength to adjust the parameters of the exhaust gas absorption device, ensuring the exhaust gas absorption effect while ensuring the spraying stability.

[0023] The negative pressure absorption model is constructed based on the exhaust gas characteristics corresponding to the coating type, including: Obtain exhaust gas characteristics corresponding to the coating type; Select the first influencing factor according to the exhaust gas characteristics; Obtain historical spraying waste gas absorption data, and mark the weight of the first influencing factor according to the historical spraying waste gas absorption data; The negative pressure absorption model was constructed based on the weight of the first influencing factor and the type of coating.

[0024] Different types of coatings, due to differences in their composition and properties, will also produce different exhaust gas characteristics during the spraying process. For example, epoxy coatings, polyurethane coatings, etc. may contain more volatile organic compounds (VOCs), which will be released into the air in large quantities during the spraying process to form exhaust gas. Although environmentally friendly coatings such as latex paints and water-based wood paints produce relatively few VOCs, they will still produce a certain amount of exhaust gas during the spraying process. Factors such as the composition, concentration, temperature, and humidity of the exhaust gas will affect the effect of negative pressure adsorption. For example, for exhaust gas containing a large amount of VOCs, a stronger negative pressure adsorption capacity is required to effectively collect and treat it. Therefore, in this embodiment, the corresponding exhaust gas characteristics are obtained according to the type of coating, and the first influencing factor is selected according to the exhaust gas characteristics. The first influencing factor includes at least exhaust gas composition, exhaust gas concentration, ambient temperature, and ambient humidity. It can be understood that different exhaust gas components can be used as different first influencing factors.

[0025] Obtain historical spraying exhaust gas absorption data, which at least includes historical spraying exhaust gas parameters and historical spraying exhaust gas absorption negative pressure intensity. The historical spraying exhaust gas parameters at least include historical spraying exhaust gas composition, historical spraying exhaust gas concentration, historical ambient temperature and historical ambient humidity. The historical spraying exhaust gas parameters correspond to the first influencing factor, that is, the historical spraying exhaust gas parameters are screened according to the first influencing factor. After assigning the initial weight, the historical spraying exhaust gas parameters and the historical spraying exhaust gas absorption negative pressure intensity are used for iterative calculation, and the weight is updated until convergence, and the first influencing factor weight is obtained. Then, the negative pressure absorption model is constructed with the coating type corresponding to the first influencing factor weight, and the correlation between the coating type and the negative pressure intensity is obtained. Therefore, when obtaining the coating type, the adapted negative pressure intensity can be obtained. Although the greater the negative pressure intensity, the better the absorption of the exhaust gas, in practice, it is necessary to consider the influence of the negative pressure intensity on the power consumption of the exhaust gas absorption device and the influence of excessive negative pressure on the operator's experience. According to the negative pressure absorption model, the adapted negative pressure intensity of the corresponding coating type can be obtained.

[0026] When taking power consumption into consideration, the first influencing factor also includes the power consumption of the exhaust gas absorption device. The historical spraying exhaust gas absorption data at least includes historical spraying exhaust gas parameters, historical spraying exhaust gas absorption negative pressure intensity and historical exhaust gas absorption device power consumption. The negative pressure absorption model is constructed with the lowest power consumption, so that the output negative pressure intensity not only adapts to the paint type but also meets the minimum power consumption requirements.

[0027] In this embodiment, the spray component parameters at least include the spray component type, the spray component suspension method and the spray component environment parameters. Constructing the shaking influence model according to the spray component parameters and the negative pressure strength includes: Selecting a second influencing factor including at least negative pressure intensity according to the spraying element parameters; Acquire historical spray component shaking data, and mark the weight of the second influencing factor according to the historical spray component shaking data; The shaking influence model is constructed with the weight of the second influencing factor and the spraying component parameters.

[0028] The second influencing factor includes the weight of the spraying element, the suspension mode of the spraying element, and the negative pressure strength. According to the spraying element parameters, the second influencing factor including at least the negative pressure strength is selected, that is, the second influencing factor must include the negative pressure strength, but the other second influencing factors are determined by the spraying element parameters. For example, when the spraying element suspension mode is rigid suspension, the negative pressure strength has negligible influence on the shaking of the spraying element, but when the spraying element suspension mode is flexible suspension, the negative pressure strength will have an impact on the spraying element. The shape of some spraying elements may be more likely to cause shaking, and the second influencing factor also includes the shape of the spraying element. The historical spraying element shaking data at least includes the spraying element parameters and negative pressure strength corresponding to the historical spraying element when shaking occurs. The weights of the spraying element parameters and the negative pressure strength are iteratively calculated using the historical spraying element shaking data to obtain the weights of the second influencing factor, so as to construct a shaking influence model and obtain the influence of the spraying element parameters and the negative pressure strength on the shaking of the spraying element. Only the data when the historical spraying element shakes are used for calculation, which ensures accuracy while reducing the amount of calculation and improving calculation efficiency.

[0029] Considering that spraying and exhaust gas absorption are usually carried out simultaneously, S5 also includes: Determine whether the optimal solution of negative pressure strength meets the comfort threshold. If so, output the current optimal solution of negative pressure strength. If not, update the optimal solution of negative pressure strength according to the comfort threshold.

[0030] The comfort threshold is the threshold of the operator's perception of negative pressure intensity, which prevents the operator from feeling uncomfortable due to excessive negative pressure intensity during negative pressure absorption. When the optimal solution of negative pressure intensity cannot meet the comfort threshold, the optimal solution of negative pressure intensity is updated with the comfort threshold to improve the operator experience.

[0031] At the same time, considering that the negative pressure intensity is reduced due to the comfort threshold, it is easy to cause the exhaust gas to be absorbed in time and cause damage to the human body, so S5 also includes: Obtaining a spraying exhaust gas concentration threshold value according to the current paint type; The spraying rate is calculated based on the spraying exhaust gas concentration threshold and the comfort threshold. When the optimal solution of the negative pressure intensity is greater than or equal to the comfort threshold, an alarm prompt is executed based on the spraying rate.

[0032] In this embodiment, the current spraying exhaust gas concentration threshold is calculated in advance based on the spraying rate calculated according to the spraying exhaust gas concentration threshold and the comfort threshold, so that when the optimal solution of the negative pressure strength is greater than or equal to the comfort threshold, the operator is prompted to control the spraying rate according to the calculated spraying rate. It can be understood that if used in a fully automated spraying workshop, the comfort threshold can also be the shaking threshold of the spray gun, that is, the negative pressure strength needs to be less than the shaking threshold of the spray gun, so as to avoid spraying errors caused by shaking of the spray gun due to negative pressure. In a fully automated spraying workshop, if the optimal solution of the negative pressure strength is greater than or equal to the comfort threshold, that is, the shaking threshold, the spraying rate is automatically controlled to reduce the increase in the concentration of the spraying exhaust gas over time.

[0033] Embodiment 2: The spraying waste gas absorption treatment method also includes: S7: Real-time monitoring of exhaust gas parameters in the spray room. When the exhaust gas parameters in the spray room exceed the spray exhaust gas concentration threshold, an alarm prompt is executed, and the negative pressure intensity is gradually increased after the first time period until the exhaust gas parameters in the spray room are lower than the spray exhaust gas concentration threshold.

[0034] In this embodiment, when the exhaust gas parameters in the spray room exceed the spray exhaust gas concentration threshold, it is considered that the operator will cause great damage to the body if he continues to stay in the spray room, and an alarm prompt is executed to inform the operator to evacuate the current spray room, and the negative pressure intensity is gradually increased until the exhaust gas parameters in the spray room are lower than the spray exhaust gas concentration threshold. The first time period is the reserved operator evacuation time, and the alarm prompt can be continuously executed during this time period.

[0035] When the exhaust gas parameters in the spray room are lower than the exhaust gas concentration threshold, the negative pressure strength needs to be adjusted to adapt to the continuation of the subsequent spraying operation. At this time, step S7 also includes: When the exhaust gas parameters in the spray room are lower than the exhaust gas concentration threshold, the negative pressure intensity is gradually reduced to the minimum balanced negative pressure intensity, and the minimum balanced negative pressure intensity is used as the exhaust gas absorption device parameter to perform spray exhaust gas absorption treatment.

[0036] The minimum balanced negative pressure intensity is the minimum negative pressure intensity when the exhaust gas parameters in the spray room are ensured to be lower than the exhaust gas concentration threshold. It can be understood that since the exhaust gas parameters in the spray room have been controlled to be lower than the exhaust gas concentration threshold in the early stage of the treatment, the minimum balanced negative pressure intensity can be the negative pressure intensity corresponding to the exhaust gas absorption rate equal to the exhaust gas generation rate. At this time, step S7 also includes: The exhaust gas generation rate is calculated based on the exhaust gas parameters in the spray booth monitored in real time; The minimum equilibrium negative pressure intensity is calculated based on the exhaust gas generation rate.

[0037] Since the exhaust gas parameters in the spraying room still exceed the standard under the optimal solution of negative pressure intensity, it is necessary to adjust the weight of the negative pressure adjustment model to avoid errors. At this time, step S7 also includes: When the minimum balanced negative pressure intensity is less than the comfort threshold, the difference between the minimum balanced negative pressure intensity and the optimal solution of the negative pressure intensity is used as the compensation value, and the first influencing factor weight and the second influencing factor weight of the negative pressure adjustment model are updated with the compensation value.

[0038] When the minimum balanced negative pressure intensity is less than the comfort threshold, the difference between the minimum balanced negative pressure intensity and the optimal solution of the negative pressure intensity is used as the compensation value. The compensation value is added to the negative pressure adjustment model training process and then iterated again to update the first influencing factor weight and the second influencing factor weight to improve the accuracy of the final output result.

[0039] Taking into account that if the minimum balanced negative pressure intensity is too high, it will affect the stability of the spraying element, after obtaining the minimum balanced negative pressure intensity, the output is updated using the updated negative pressure adjustment model. If the updated output result is less than the minimum balanced negative pressure intensity, the optimal spraying rate is calculated based on the updated output result, and an alarm is issued. If the updated output result is greater than the minimum balanced negative pressure intensity, the negative pressure intensity of the exhaust gas absorption device is adjusted based on the updated output result.

[0040] Embodiment three: The spraying waste gas absorption treatment system is connected to the waste gas absorption device, including: Data acquisition module, used to collect the current paint type and current spray component parameters; A data modeling module is used to construct a negative pressure absorption model according to the exhaust gas characteristics and a sloshing influence model according to the sloshing characteristics; an optimization analysis module is used to construct a negative pressure adjustment model according to the optimization objective function, the negative pressure absorption model and the sloshing influence model, and output the optimal solution for the negative pressure intensity; The execution control module is used to adjust the parameters of the exhaust gas absorption device according to the optimal solution of the negative pressure intensity.

[0041] In this embodiment, the data acquisition module is also used to collect historical spraying exhaust gas absorption data and historical spraying element shaking data, and monitor the exhaust gas parameters in the spraying room in real time. The data acquisition module is connected to the data modeling module, the data modeling module is connected to the optimization analysis module, the optimization analysis module is connected to the execution control module and the data acquisition module, and the execution control module is connected to the exhaust gas absorption device.

[0042] The data modeling module includes at least a first modeling unit and a second modeling unit. The first modeling unit is used to construct a negative pressure absorption model according to the exhaust gas characteristics, and the second modeling unit is used to construct a sloshing influence model according to the sloshing characteristics.

[0043] The optimization analysis module includes at least an optimization modeling unit and an analysis and processing unit. The optimization modeling unit is used to construct a negative pressure adjustment model according to the optimization objective function, the negative pressure absorption model and the sway impact model. The analysis and processing unit is used to output the optimal solution for the negative pressure intensity according to the negative pressure adjustment model and the current paint type and current spray element parameters collected by the data acquisition module.

[0044] In this embodiment, the spraying waste gas absorption and treatment system also includes: The alarm module is used to output the spraying rate and execute the alarm prompt according to the exhaust gas generation rate.

[0045] The alarm module is connected to the data acquisition module and the optimization analysis module, and includes at least a rate calculation unit and an alarm display unit. The alarm display unit can be connected to the operator terminal to facilitate the execution of alarm prompts. The rate calculation unit is used to calculate the spraying rate based on the data collected by the data acquisition module.

[0046] like Figure 2 As shown, the exhaust gas absorption device is connected to the spray room 1, and the spray room 1 is provided with an air conditioner 11 and a spray table 12. A drying room 2 is adjacent to the spray room, and an equipment isolation room 4 is adjacent to the drying room 2. The drying room 2 and the equipment isolation room 4 are connected through a hot air delivery pipe 3. The exhaust gas absorption device includes a dry exhaust gas filter 5, an activated carbon box 6, a filter exhaust fan 7 and an external exhaust pipe 8.

[0047] During the spraying operation, the filter exhaust fan 7 works at the same time, and the paint mist generated in the air during the spraying process is sucked into the spray station 12 by the suction pressure. The spray station 12 has a built-in multi-layer filter paper box to first absorb most of the paint mist, and then pass through the dry exhaust gas filter equipment 5, and the remaining paint mist is attached to the filter layer in the equipment. The remaining odor passes through the activated carbon box 6, and the odor conversion effect of the activated carbon is utilized to discharge the exhaust gas without odor.

[0048] The specific implementation described above is a preferred implementation of the spray exhaust gas absorption treatment method and system of the present invention, and is not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific implementation. All equivalent changes made in accordance with the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. A method for absorbing and treating spraying waste gas, characterized in that: The steps include: S1: Construct a negative pressure absorption model based on the exhaust gas characteristics corresponding to the coating type; S2: Construct a shaking influence model based on spray component parameters and negative pressure intensity; S3: Taking the maximum negative pressure intensity as the optimization target, construct the optimization objective function; S4: Construct a negative pressure adjustment model based on the negative pressure absorption model, sloshing impact model and optimization objective function; S5: obtaining the current coating type and the current spray component parameters, and outputting the optimal solution of negative pressure intensity according to the current coating type, the current spray component parameters and the negative pressure adjustment model; S6: Execute the spraying exhaust gas absorption process using the optimal solution of negative pressure intensity as the exhaust gas absorption device parameter.

2. The method for absorbing and treating spraying waste gas according to claim 1, characterized in that: The negative pressure absorption model is constructed according to the exhaust gas characteristics corresponding to the coating type, including: Obtain exhaust gas characteristics corresponding to the coating type; Select the first influencing factor according to the exhaust gas characteristics; Obtain historical spraying waste gas absorption data, and mark the weight of the first influencing factor according to the historical spraying waste gas absorption data; The negative pressure absorption model was constructed based on the weight of the first influencing factor and the type of coating.

3. The method for absorbing and treating spraying waste gas according to claim 1, characterized in that: The sloshing influence model is constructed according to the spraying element parameters and the negative pressure intensity, including: Selecting a second influencing factor including at least negative pressure intensity according to the spraying element parameters; Acquire historical spray component shaking data, and mark the weight of the second influencing factor according to the historical spray component shaking data; The shaking influence model is constructed with the weight of the second influencing factor and the spraying component parameters.

4. The method for absorbing and treating spraying waste gas according to claim 2, characterized in that: The first influencing factors include at least exhaust gas composition, exhaust gas concentration, ambient temperature and ambient humidity.

5. The method for absorbing and treating spraying waste gas according to claim 3, characterized in that: The second influencing factor at least includes the weight of the spraying component, the suspension method of the spraying component and the negative pressure intensity.

6. The method for absorbing and treating spraying waste gas according to claim 1, characterized in that: The S5 further includes: Determine whether the optimal solution of negative pressure strength meets the comfort threshold. If so, output the current optimal solution of negative pressure strength. If not, update the optimal solution of negative pressure strength according to the comfort threshold.

7. The method for absorbing and treating spraying waste gas according to claim 1, characterized in that: Also includes: S7: Real-time monitoring of exhaust gas parameters in the spray room. When the exhaust gas parameters in the spray room exceed the spray exhaust gas concentration threshold, an alarm prompt is executed, and the negative pressure intensity is gradually increased after the first time period until the exhaust gas parameters in the spray room are lower than the spray exhaust gas concentration threshold.

8. The method for absorbing and treating spraying waste gas according to claim 7, characterized in that: The S7 further comprises: When the exhaust gas parameters in the spray room are lower than the exhaust gas concentration threshold, the negative pressure intensity is gradually reduced to the minimum balanced negative pressure intensity, and the minimum balanced negative pressure intensity is used as the exhaust gas absorption device parameter to perform spray exhaust gas absorption treatment.

9. The method for absorbing and treating spraying waste gas according to claim 8, characterized in that: The S7 further comprises: When the minimum balanced negative pressure intensity is less than the comfort threshold, the difference between the minimum balanced negative pressure intensity and the optimal solution of the negative pressure intensity is used as the compensation value, and the first influencing factor weight and the second influencing factor weight of the negative pressure adjustment model are updated with the compensation value.

10. A spraying waste gas absorption treatment system, connected to a waste gas absorption device, for implementing the method according to any one of claims 1 to 9, characterized in that: include: Data acquisition module, used to collect the current paint type and current spray component parameters; A data modeling module, used to construct a negative pressure absorption model based on exhaust gas characteristics and a sloshing impact model based on sloshing characteristics; An optimization analysis module is used to construct a negative pressure adjustment model based on the optimization objective function, the negative pressure absorption model, and the sloshing impact model, and output the optimal solution for the negative pressure intensity; The execution control module is used to adjust the parameters of the exhaust gas absorption device according to the optimal solution of the negative pressure intensity.

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