Coating waste gas and waste liquid treatment device

Abstract

The utility model relates to the technical field of spraying, in particular to a coating waste gas and waste liquid treatment device. The treatment device is located below the spraying operation position of a spraying device and comprises a waste gas treatment structure and a waste liquid treatment structure, the waste liquid treatment structure comprises a liquid flushing assembly, a recycling box and a liquid pipeline, and the output end of the liquid flushing assembly communicates with the input end of the recycling box; the liquid pipeline is connected between the output end of the recycling box and the input end of the liquid flushing assembly. According to the treatment device, waste gas formed in the spraying operation is collected and discharged through the waste gas treatment structure, dripping paint is treated and collected through the waste liquid treatment structure, and waste liquid and waste gas are treated at the same time in a targeted mode; in addition, the liquid flushing assembly and the recycling box of the waste liquid treatment structure recycle the permeate liquid through the liquid pipeline, so that the cost and the space for additionally arranging a discharge pipeline are avoided, and meanwhile, the environmental protection target is also achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spraying technology, in particular to a coating waste gas and waste liquid treatment device. BACKGROUND

[0002] The coating used in the spraying process is usually composed of resin, solvent, pigment and additive, etc., wherein the solvent is a volatile substance, which will volatilize a lot into the air during the spraying and drying process, forming organic waste gas. These waste gases not only contain harmful volatile organic compounds (VOCs), but also may contain particulate matter, odor and toxic substances, which pose a threat to human health and the atmospheric environment. Secondly, during the spraying process, the spraying equipment and tools need to be cleaned regularly, and these cleaning liquids contain a large amount of coating residues, solvents and other chemical substances. In addition, part of the coating may not be attached to the workpiece due to various reasons (such as uneven spraying, excessive spraying, etc.) during the spraying process, and these excess coatings will also form waste liquid. If these waste liquids are not properly treated and directly discharged into the environment, they will cause serious pollution to water bodies. As can be seen, spraying operations will form waste gas and waste liquid, which not only pose a threat to the environment, but also affect human health.

[0003] The existing spraying device usually only has an exhaust system to treat waste through air circulation, but if the dripping coating is directly treated by the exhaust system, the coating will be attached to the pipeline of the exhaust system in a large area, not only causing secondary pollution, but also requiring additional time and labor costs for subsequent treatment, which has the problems of untimely cleaning, high cost and environmental pollution.

[0004] Therefore, a coating waste gas and waste liquid treatment device is needed to treat waste gas and waste liquid in real time during spraying operation to minimize the impact of waste gas and waste liquid on the human body and the environment. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide a coating waste gas and waste liquid treatment device that can treat waste gas and waste liquid in real time during spraying operation to minimize the impact of waste gas and waste liquid on the human body and the environment.

[0006] The embodiments of the present application can be implemented by the following technical solutions:

[0007] A coating waste gas and waste liquid treatment device, the treatment device is located below the spraying operation position of the spraying device, comprising a waste gas treatment structure and a waste liquid treatment structure, the waste liquid treatment structure comprises a liquid flushing assembly, a recovery tank and a liquid pipeline, the output end of the liquid flushing assembly is in communication with the input end of the recovery tank, and the liquid pipeline is connected between the output end of the recovery tank and the input end of the liquid flushing assembly.

[0008] Further, the liquid flushing assembly comprises a liquid supply part, a first overflow baffle, a slope part, a liquid receiving tank and a first empty part, the slope part is connected to the top of the inside of the liquid receiving tank, the liquid supply part and the first overflow baffle are connected to the top of the slope part, the first empty part is located at the bottom of the slope part and between the slope part and the liquid receiving tank, and the liquid receiving tank is communicated with the recovery tank.

[0009] The first overflow baffle, the slope part and the liquid receiving tank form a space for containing the flushing liquid provided by the liquid supply part, and when the liquid in the space is full, the liquid can overflow from the top of the first overflow baffle and flow through the slope part, the first empty part and the liquid receiving tank.

[0010] Further, the slope part comprises a liquid containing plate and an overflow slope connected in sequence along the slope direction of the slope part, the liquid containing plate is connected between the first overflow baffle and the liquid receiving tank along the horizontal direction, and the liquid containing plate, the first overflow baffle and the liquid receiving tank form a semi-closed structure with an open top.

[0011] Further, the slope part further comprises a liquid leakage plate, the liquid leakage plate is connected to one side of the overflow slope along the slope direction, the length of the liquid leakage plate along the slope width direction is less than the slope width of the overflow slope, and at least one first empty part is formed between at least one side of the liquid leakage plate along the slope width direction and the liquid receiving tank.

[0012] Preferably, the overflow slope comprises a plurality of slope structures connected in sequence, and the corresponding elevation angles of the plurality of slope structures increase in sequence along the direction close to the slope bottom.

[0013] Preferably, the recovery tank comprises a transition tank, a filtrate tank and a filter part, the transition tank is communicated with the liquid receiving tank, and the transition tank is permeatedly communicated with the filtrate tank through the filter part.

[0014] Further, one end of the liquid pipeline is communicated with the filtrate tank, and the other end is communicated with the liquid supply part.

[0015] Further, the waste gas treatment structure comprises a cover body and an exhaust pipeline communicated with the cover body, the cover body and the exhaust pipeline are connected to the side of the liquid receiving tank in sequence, and the cover body is arranged towards the slope of the slope part.

[0016] Preferably, the waste gas treatment structure further comprises a liquid baffle, the liquid baffle is arranged at one end of the cover body close to the exhaust pipeline along the vertical direction.

[0017] The paint waste gas and waste liquid treatment device provided by the embodiment of the present application has at least the following beneficial effects:

[0018] The processing device in the application collects and discharges the waste gas formed in the spraying operation through the waste gas treatment structure, and processes and collects the dripping coating through the waste liquid treatment structure, thereby simultaneously processing the waste liquid and waste gas, and further reducing different safety problems and environmental problems caused by different waste;

[0019] The liquid flushing assembly and the recovery tank of the waste liquid treatment structure in the application circulate the permeate through the liquid pipeline, thereby avoiding the cost and space of additional discharge pipeline, and achieving the environmental protection goal;

[0020] The overflow slope in the application includes a plurality of slope structures connected in head-to-tail, and the corresponding elevation angles of the plurality of slope structures are larger than the slope of a single slope structure in the direction close to the slope bottom. Since the elevation angle of the slope structure close to the slope bottom of the plurality of slope structures is large, the waste liquid mixed with the coating liquid is prevented from rebounding when flowing through adjacent slope structures, and the probability of the coating in the waste liquid adhering to the overflow slope is further reduced, thereby reducing the labor cost and time cost in the later processing;

[0021] The recovery tank in the application intercepts the coating in the transition tank through the filtrate tank, and flows the filtered permeate into the filtrate tank, so that the liquid pipeline is recycled to the liquid supply part, thereby avoiding the problem of coating solidification caused by directly recycling the waste liquid with coating, and avoiding the problem of coating adhesion caused by too high coating concentration. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure diagram of the spraying device in the application;

[0023] Figure 2 It is the overall structure diagram of the processing device in the application;

[0024] Figure 3 It is the overall structure diagram of the waste liquid treatment structure in the application;

[0025] Figure 4 It is the overall structure diagram of the hidden liquid receiving tank of the waste liquid treatment structure in the application;

[0026] Figure 5 It is the exploded view of the hidden liquid receiving tank of the waste liquid treatment structure in the application;

[0027] Figure 6 It is Figure 4 the side view of the structure in the application;

[0028] Figure 7 It is the overall structure diagram of the liquid supply part in the application;

[0029] Figure 8 It is the structure diagram of the waste gas treatment structure and the slope part in the application;

[0030] Figure 9 For Figure 8 Local enlarged view of the A area in the middle.

[0031] Reference numerals: 2, spraying device, 21, support fence mechanism, 23, paint supply mechanism, 24, treatment device, 241, exhaust gas treatment structure, 2411, cover body, 2412, exhaust pipeline, 2413, liquid blocking plate, 242, waste liquid treatment structure, 2421, liquid flushing assembly, 24211, liquid supply part, 24212, first overflow blocking plate, 24213, slope part, 242131, liquid containing plate, 242132, overflow slope, 242133, liquid leakage plate, 24214, liquid receiving tank, 24215, first empty part, 24216, surrounding connecting part, 24217, limiting part, 2422, recovery tank, 24221, transition tank, 24222, filtrate tank, 24223, filtering part, 2423, liquid pipeline, 25, feeding mechanism, 26, spraying operation tank. DETAILED DESCRIPTION

[0032] Hereinafter, the present application will be further described based on the preferred embodiments and with reference to the accompanying drawings.

[0033] The words in the present specification are used for explaining the embodiments of the present application, but are not intended to limit the present application. Unless otherwise explicitly specified and limited, if the terms "arranged", "connected", "linked" appear, they should be interpreted in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be specifically understood.

[0034] In addition, in the description in the embodiments of the present application, various components on the drawing are enlarged or reduced for the convenience of understanding, but this practice is not intended to limit the protection scope of the present application.

[0035] Figure 1 The overall structure diagram of the spraying device 2 equipped with the treatment device 24 in the present application is shown as follows: Figure 1As shown, the spraying device 2 includes a support fence mechanism 21 for fixedly mounting other mechanisms, a paint supply mechanism 23 for providing paint, a spraying work box 26 for providing a relatively closed space for spraying work of the execution mechanism, a processing device 24 for processing excess substances formed by spraying of the execution mechanism to achieve environmental protection treatment of the work environment, a feeding mechanism 25 for transferring the to-be-sprayed object into the spraying work box 26, and the execution mechanism for spraying the paint provided by the paint supply mechanism 23 onto the to-be-sprayed object in the spraying work box 26. The application synchronously processes waste gas, waste liquid and other waste generated during the spraying work through the processing device 24, reduces the time cost and labor cost of separate processing after spraying, and reduces the safety and environmental protection problems caused by waste, which has the advantages of low cost, high safety and significant environmental protection effect.

[0036] Further, to achieve the processing of the waste generated by spraying, the processing device 24 in the application is located below the spraying work position of the spraying device 2, so that Figure 1 For example, the processing device 24 is located below the execution mechanism and the spraying work box 26 to synchronously process the waste gas and waste liquid generated during the spraying work.

[0037] Specifically, Figure 2 The overall structure diagram of the processing device 24 in the application is shown in FIG. 4, which shows that Figure 2 The processing device 24 includes a waste gas processing structure 241 for collecting and discharging the waste gas generated during the spraying work and a waste liquid processing structure 242 for processing and collecting the dripping paint. The waste liquid cannot be directly discharged, so it needs to be collected after processing.

[0038] Figure 3 The overall structure diagram of the waste liquid processing structure 242 in the application is shown in FIG. 5, which shows that Figure 3 The waste liquid processing structure 242 includes a liquid flushing assembly 2421 and a recovery tank 2422. The liquid flushing assembly 2421 is located below the execution mechanism to complete the spraying work, which is used to flush away the dripping paint and form waste liquid mixed with paint to prevent the dripping paint from adhering to the surface of the device, thereby reducing the labor cost and time cost of later processing. The output end of the liquid flushing assembly 2421 is in communication with the input end of the recovery tank 2422, and the recovery tank 2422 is used to collect the waste liquid mixed with paint formed by the liquid flushing assembly 2421 to prevent the waste liquid from spreading and causing environmental problems.

[0039] Specifically, Figure 4 , Figure 5The overall structural diagram and the exploded view of the partial structure of the liquid flushing assembly 2421 in the present application are shown in FIGS. Figure 3 , Figure 4 and Figure 5 The liquid flushing assembly 2421 includes a liquid supply part 24211, a first overflow baffle 24212, a slope part 24213, a liquid receiving tank 24214, and a first empty part 24215. The slope part 24213 is connected to the upper part of the inside of the liquid receiving tank 24214. The liquid supply part 24211 and the first overflow baffle 24212 are connected to the upper part of the slope part 24213. The liquid supply part 24211 is used to provide liquid for flushing paint. The first overflow baffle 24212 is used to ensure that the liquid provided by the liquid supply part 24211 can overflow after reaching a certain amount. The slope part 24213 is used to cooperate with the first overflow baffle 24212 to store liquid and guide the liquid after overflowing along the slope to flow into the liquid receiving tank 24214 through the first empty part 24215.

[0040] Further, as shown in FIG. Figures 3-5 The slope part 24213 includes a liquid containing plate 242131 and an overflow slope 242132 connected in sequence along the slope direction. The liquid containing plate 242131 is connected between the first overflow baffle 24212 and the liquid receiving tank 24214 in the horizontal direction. The liquid containing plate 242131, the first overflow baffle 24212, and the liquid receiving tank 24214 form a semi-closed structure with an open top. The liquid provided by the liquid supply part 24211 flows into the semi-closed structure. The top surface height of the first overflow baffle 24212 is lower than the top surface height of the liquid receiving tank 24214 in the semi-closed structure. When the liquid level in the semi-closed structure reaches the top surface of the first overflow baffle 24212, the liquid will overflow from the top surface of the first overflow baffle 24212 to the overflow slope 242132. On the one hand, the top surface height of the first overflow baffle 24212 is higher than the overflow slope 242132, which increases the liquid flow rate and reduces the probability of paint adhering to the overflow slope 242132. On the other hand, compared with the case where the first overflow baffle 24212 is not provided, the liquid flushing assembly 2421 with the first overflow baffle 24212 can ensure that the liquid continuously flows out after filling the semi-closed structure, thereby keeping the overflow slope 242132 covered with liquid at all times. This ensures that the paint dropped by the actuator 22 flows from the semi-closed structure through the overflow slope 242132 and the first empty part 24215 into the liquid receiving tank 24214 in a timely and continuous manner, and prevents the paint from adhering to the overflow slope 242132.

[0041] In some preferred embodiments of the present application, Figure 6 The side view of the waste liquid treatment structure 242 hidden behind the liquid receiving tank 24214 is shown in FIG. Figures 3-6As shown, the overflow slope surface 242132 comprises a plurality of slope surface structures connected end to end, and the corresponding elevation angles of the plurality of slope surface structures gradually increase in the direction close to the slope bottom. Compared with the slope surface of a single slope surface structure, since the elevation angle of the slope surface structure close to the slope bottom of the plurality of slope surface structures is large, when the waste liquid mixed with the coating flows through adjacent slope surface structures, the waste liquid is prevented from rebounding, and the probability of the coating in the waste liquid adhering to the overflow slope surface 242132 is further reduced.

[0042] Further, as shown, Figures 3-6 As shown, the slope surface part 24213 further comprises a liquid leakage plate 242133 connected to one end of the overflow slope surface 242132 along the slope surface extension direction of the liquid leakage plate 242133. The length of the liquid leakage plate 242133 along the slope surface width direction is smaller than the slope surface width of the overflow slope surface 242132, so that at least one first gap part 24215 is formed between at least one side of the liquid leakage plate 422133 along the slope surface width direction and the liquid receiving tank 24214. The waste liquid flowing down the overflow slope surface 242132 flows into the liquid receiving tank 24214 through the first gap part 24215, and then flows into the recovery tank 2422 from the liquid receiving tank 24214.

[0043] Further, to ensure that the waste liquid can flow from the liquid receiving tank 24214 into the recovery tank 2422, the bottom surface of the liquid receiving tank 24214 is in a slope surface structure, and the slope surface is arranged towards the direction of the recovery tank 2422.

[0044] Further, the recovery tank 2422 is a tank type structure with an open top end.

[0045] Further, the waste liquid with coating continuously flows into the recovery tank 2422. To improve the processing efficiency of the waste liquid, the present application processes the waste liquid in the recovery tank 2422. As shown, Figure 3 The recovery tank 2422 comprises a transition tank 24221, a filtrate tank 24222, and a filter part 24223. The transition tank 24221 is in communication with the liquid receiving tank 24214, and is in permeable communication with the filtrate tank 24222 through the filter part 24223. When the waste liquid in the transition tank 24221 flows to the filtrate tank 24222, under the permeation of the filter part 24223, the filter part 24223 only allows small molecules such as water to pass through, and the coating cannot permeate through the filter part 24223, so that the coating remains in the transition tank 24221, and the filtrate tank 24222 contains the permeated liquid without coating.

[0046] In some preferred embodiments of the present application, as the spraying operation proceeds, the permeated liquid in the filtrate tank 24222 will continuously increase. On the one hand, the permeated liquid can be discharged by arranging an external pipeline on the filtrate tank 24222, and on the other hand, the volume of the filtrate tank 24222 can be increased to accommodate a sufficient amount of permeated liquid. The above two methods have problems of high cost, large space occupation, and waste of water resources. Therefore, as shown,Figure 5 As shown, the waste liquid treatment structure 242 in the application further comprises a liquid pipeline 2423, one end of which is in communication with the filtrate tank 24222, and the other end of which is in communication with the liquid supply part 24211. The application can recycle the permeate through the liquid pipeline 2423, thereby saving cost and space, and achieving the environmental protection goal. In addition, the liquid in the filtrate tank 24222 is returned to the liquid supply part 24211 through the liquid pipeline 2423, thereby avoiding the problem of paint solidification caused by direct recycling of the paint waste liquid, and avoiding the problem of device adhesion caused by too high paint concentration.

[0047] In some specific embodiments of the application, as shown in Figure 7 Due to the arrangement of the liquid pipeline 2423, the liquid in the liquid supply part 24211 does not need to be taken from the external pipeline, so the liquid supply part 24211 in the application is a tubular structure with a plurality of through holes in the bottom, and the liquid can flow into the semi-closed structure formed by the liquid containing plate 242131, the first overflow baffle 24212 and the liquid receiving tank 24214 from the bottom through holes.

[0048] In some preferred embodiments of the application, as shown in Figure 4 and Figure 5 To ensure the stable connection of the slope part 24213, the liquid flushing assembly 2421 further comprises a surrounding connecting part 24216 and a limiting part 24217, the surrounding connecting part 24216 is connected to the outer side of the liquid containing plate 242131 and the both ends of the slope width of the overflow slope 242132, the slope part 24213 is connected to the liquid receiving tank 24214 through the surrounding connecting part 24216, and the limiting part 24217 is connected to one end of the liquid leakage plate 242133 along the slope extension direction of the slope part 24213, and extends along the vertical direction, the outer side of which abuts against the inner side of the liquid receiving tank 24214, and the end of the liquid leakage plate 242133 abuts against the end surface of the liquid receiving tank 24214. Through the above arrangement, it is ensured that the slope part 24213 can be stably connected to the inside of the liquid receiving tank 24214.

[0049] Further, to ensure the abutting cooperation of the overflow slope 242132, the limiting part 24217 and the liquid receiving tank 24214, a second hollow part is provided on the side of the liquid receiving tank 24214, the second hollow part is provided on the side of the liquid receiving tank 24214 corresponding to the slope bottom of the overflow slope 242132, the bottom end of the side abuts against the top end of the overflow slope 242132, and the upper inner side of the side abuts against the outer side of the limiting part 24217.

[0050] In some specific embodiments of the application, Figure 8 a structural schematic view of the waste gas treatment structure 241 cooperating with the slope part 24213 is shown, Figure 2 and Figure 8As shown, the waste gas treatment structure 241 comprises a cover body 2411 and an exhaust duct 2412 in communication with the cover body 2411, the cover body 2411 and the exhaust duct 2412 are connected to the side of the liquid receiving tank 2421 in sequence, the cover body 2411 is arranged towards the slope surface of the slope part 2421, and the exhaust duct 2412 is connected with an external exhaust device, which carries away and discharges the waste gas in the air formed in the spraying operation by the airflow generated by the internal fan and collects the waste gas.

[0051] Further, as shown in Figure 8 the flowing liquid on the overflow slope surface 2421 flows directly into the liquid receiving tank 2421 from the first gap 2421, and part of the liquid flows along the bottom surface of the cover body 2411 towards the exhaust duct 2412, therefore, in some specific embodiments of the present application, the bottom surface of the cover body 2411 is a slope surface structure, and the slope surface of the cover body 2411 is arranged towards the slope part 2421.

[0052] In some preferred embodiments of the present application, Figure 9 a local enlarged view of the A area in Figure 8 is shown, as shown in Figure 8 and Figure 9 to avoid the situation that the liquid in the cover body 2411 flows into the exhaust duct 2412 when the amount of liquid is too large, the waste gas treatment structure 241 further comprises a liquid blocking plate 2413, which is connected to one end of the cover body 2411 near the exhaust duct 2412 in the vertical direction, and can block the backflow of the liquid to the exhaust duct 2412.

[0053] The specific embodiments of the present application are described in detail above, and for those skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also belong to the protection scope of the claims of the present application.

Claims

1. A paint exhaust and waste liquid treatment device (24) is located below the spraying working position of a spraying device (2), comprising an exhaust treatment structure (241), characterized in that: It further comprises a waste liquid treatment structure (242), which comprises a liquid flushing assembly (2421), a recovery tank (2422) and a liquid pipeline (2423), the output end of the liquid flushing assembly (2421) is communicated with the input end of the recovery tank (2422), and the liquid pipeline (2423) is connected between the output end of the recovery tank (2422) and the input end of the liquid flushing assembly (2421).

2. The paint exhaust and waste liquid treatment device (24) according to claim 1, characterized in that: The liquid flushing assembly (2421) comprises a liquid supply part (24211), a first overflow baffle (24212), a slope part (24213), a liquid receiving tank (24214) and a first empty part (24215), the slope part (24213) is connected above the inside of the liquid receiving tank (24214), the first overflow baffle (24212), the slope part (24213) and the liquid receiving tank (24214) surround a space to contain the flushing liquid provided by the liquid supply part (24211), the liquid supply part (24211) and the first overflow baffle (24212) are connected above the slope part (24213), the first empty part (24215) is located at the bottom of the slope part (24213) and between the slope part (24213) and the liquid receiving tank (24214), and the liquid receiving tank (24214) is communicated with the recovery tank (2422).

3. The paint exhaust and waste liquid treatment device (24) according to claim 2, characterized in that: The slope part (24213) comprises a liquid containing plate (242131) and an overflow slope (242132) connected in sequence along the slope direction thereof, the liquid containing plate (242131) is connected between the first overflow baffle (24212) and the liquid receiving tank (24214) along the horizontal direction, and the liquid containing plate (242131), the first overflow baffle (24212) and the liquid receiving tank (24214) form a semi-closed structure with an open top end.

4. The paint exhaust and waste liquid treatment device (24) according to claim 3, characterized in that: The slope part (24213) further comprises a liquid leakage plate (242133) connected to one side of the overflow slope (242132) along the slope direction, the length of the liquid leakage plate (242133) along the slope width direction is less than the slope width of the overflow slope (242132), and at least one first empty part (24215) is formed between at least one side of the liquid leakage plate (242133) along the slope width direction and the liquid receiving tank (24214).

5. The coating waste gas and liquid treatment device (24) according to claim 3, characterized in that: the overflow slope (242132) comprises a plurality of slope structures connected head to tail, and the corresponding elevation angles of the plurality of slope structures gradually increase along the direction close to the slope bottom.

6. The coating waste gas and liquid treatment device (24) according to claim 2, characterized in that: the recovery tank (2422) comprises a transition tank (24221), a filtrate tank (24222) and a filter part (24223), the transition tank (24221) is in communication with the liquid receiving tank (24214), and the transition tank (24221) is in permeation communication with the filtrate tank (24222) through the filter part (24223).

7. The coating waste gas and liquid treatment device (24) according to claim 6, characterized in that: one end of the liquid pipeline (2423) is in communication with the filtrate tank (24222), and the other end is in communication with the liquid supply part (24211).

8. The coating waste gas and liquid treatment device (24) according to claim 2, characterized in that: the waste gas treatment structure (241) comprises a cover body (2411) and an exhaust pipeline (2412) in communication with the cover body (2411), the cover body (2411) and the exhaust pipeline (2412) are sequentially connected to the side of the liquid receiving tank (24214), and the cover body (2411) is arranged towards the slope surface of the slope part (24213).

9. The coating waste gas and liquid treatment device (24) according to claim 8, characterized in that: the waste gas treatment structure (241) further comprises a liquid blocking plate (2413), and the liquid blocking plate (2413) is arranged in the vertical direction at one end of the cover body (2411) close to the exhaust pipeline (2412).

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