Spraying room and spraying system

Abstract

The utility model provides a spraying room and a spraying system, the spraying room comprises a spraying chamber, a purification assembly and a gas circulation assembly, the gas inlet end of the purification assembly is communicated with the spraying chamber, the gas circulation assembly comprises a gas extractor and a gas exhaust pipeline, the gas exhaust pipeline is provided with a gas inlet end, and a first gas exhaust end and a second gas exhaust end which are communicated with the gas inlet end; the air inlet end of the air extractor is connected with the air outlet end of the purification assembly, the exhaust end of the air extractor is connected with the air inlet end of the exhaust pipeline, the first exhaust end communicates with the interior of the spraying chamber, and the second exhaust end communicates with the exterior of the spraying chamber. According to the utility model, the gas purified by the purification component can be extracted by the same air extractor and discharged in two paths, and the same air extractor is utilized to supply the gas to the spraying chamber area to form positive pressure and extract the gas from the purification component area to form negative-pressure purified gas internal circulation function; and the number of air exhaust devices required by air exhaust and internal circulation of the spraying room is reduced, so that the structure of the spraying room is simplified, and the material cost of the spraying room is reduced.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, specifically to a spray booth and a spraying system including the spray booth. Background Technology

[0002] Spray coating is commonly used in hardware, plastics, furniture, military, shipbuilding and other fields. It usually uses spray coating equipment to spray paint onto the surface of the workpiece, which serves to beautify and protect the product. Spray coating is highly efficient and provides uniform and reliable coating coverage on the workpiece surface, making it the most widely used coating method today.

[0003] To prevent paint components dispersed in the air from escaping into the atmosphere, the spraying process is generally carried out in a sealed spray booth, where a negative pressure environment is created through continuous air extraction. Simultaneously, to ensure the cleanliness of the air within the spray booth, continuous purification of the air is required through internal circulation. However, both external air extraction and internal circulation require multiple fans, resulting in a complex spray booth structure and high material and scheduling costs.

[0004] Therefore, how to simplify the structure of the spray booth has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a spray booth and a spraying system including the spray booth. The spray booth has a simple structure and low material and scheduling costs.

[0006] To achieve the above objectives, as one aspect of this utility model, a spray booth is provided, comprising a spray chamber, a purification component, and a gas circulation component. The air inlet of the purification component is connected to the spray chamber. The gas circulation component includes an air extraction device and an exhaust pipe. The exhaust pipe has an air inlet and a first exhaust end and a second exhaust end connected to the air inlet. The air inlet of the air extraction device is connected to the air outlet of the purification component, and the exhaust end of the air extraction device is connected to the air inlet of the exhaust pipe. The first exhaust end is connected to the interior of the spray chamber, and the second exhaust end is connected to the exterior of the spray chamber.

[0007] Optionally, the exhaust pipe includes a main circulation pipe and an exhaust branch pipe. The two ends of the main circulation pipe are respectively formed as the intake end and the first exhaust end of the exhaust pipe. One end of the exhaust branch pipe is connected to the main circulation pipe, and the other end of the exhaust branch pipe is formed as the second exhaust end of the exhaust pipe.

[0008] Optionally, both the main circulation pipe and the exhaust branch pipe have circular cross-sectional shapes.

[0009] Optionally, the cross-sectional dimension of the exhaust branch pipe is smaller than that of the circulation main pipe.

[0010] Optionally, the exhaust pipeline further includes a flow control valve, which is disposed on the exhaust branch pipe and is capable of controlling the minimum flow cross-sectional area of ​​the exhaust branch pipe.

[0011] Optionally, the flow control valve includes a valve plate, a valve shaft, and a rotating handle. The valve plate is located inside the exhaust branch pipe, the valve shaft is fixedly connected to the valve plate, the side wall of the exhaust branch pipe has a hinged through hole, one end of the valve shaft passes through the hinged through hole to the outside of the exhaust branch pipe, and is fixedly connected to the rotating handle.

[0012] Optionally, the flow control valve is a ball valve, gate valve, or shut-off valve.

[0013] Optionally, the main circulation pipe includes a transverse air guide tube and a connecting bend tube. The air extraction device is disposed on the top of the purification component. One end of the transverse air guide tube is formed as the air inlet of the exhaust pipe, and the other end is connected to the connecting bend tube. The end of the connecting bend tube away from the transverse air guide tube is formed as the first exhaust end, and the first exhaust end is connected to the top of the spray chamber. The exhaust branch pipe is connected to the transverse air guide tube.

[0014] Optionally, the spray booth includes multiple gas circulation components.

[0015] Optionally, the spray chamber includes two of the aforementioned gas circulation components.

[0016] Optionally, the purification assembly includes a purification chamber, a sprayer, and at least one purification tank. The air outlet of the purification assembly is located at the top of the purification chamber, and the air inlet of the purification assembly is located at the bottom side of the purification chamber. The purification tank is vertically arranged and can draw gas from the bottom of the purification tank and discharge the gas to the top of the purification tank. The sprayer is located at the top of the purification tank and can spray liquid into the purification tank.

[0017] Optionally, the diameter of the bottom of the purification tank gradually decreases from top to bottom.

[0018] Optionally, the purification tank is provided with fan-shaped blades, which can change the airflow path through the purification tank into a spiral shape to increase the contact area between the gas to be purified and the liquid and enhance the purification effect.

[0019] Optionally, the spray booth further includes a purification water tank and a liquid circulation assembly. The purification water tank is located at the bottom of the spray booth and the purification chamber. The liquid circulation assembly can draw liquid from the purification water tank and supply the liquid to the sprayer.

[0020] Optionally, the spray booth further includes at least one partition water tank disposed in the spray chamber and located on the side facing the air inlet of the purification component. The liquid circulation component can also supply liquid to the partition water tank so that the liquid overflowing from the partition water tank forms a partition water curtain that separates the air inlet of the purification component from the internal space of the spray chamber.

[0021] Optionally, the spray booth includes multiple partition water tanks and multiple water curtain plates. The water curtain plates are arranged one-to-one on the side of the multiple partition water tanks away from the air inlet end of the purification component. The bottom position of the water curtain plate of the upper partition water tank corresponds to the position of the adjacent partition water tank below. The liquid circulation component can supply the liquid to the uppermost partition water tank.

[0022] Optionally, the spray booth further includes a spraying station, which is disposed in the spraying chamber, and multiple spraying fixtures are fixedly disposed on the spraying station.

[0023] Optionally, a workpiece transfer port is provided on the wall of the spraying chamber, which is used for a transfer device to drive the workpiece in and out of the spraying chamber.

[0024] Optionally, the spraying chamber is further provided with a filter ceiling, which is horizontally arranged above the spraying station, and the filter ceiling divides the top of the spraying chamber to form a filter space, and the first exhaust end of the exhaust pipe is connected to the filter space.

[0025] As a second aspect of this utility model, a spraying system is provided, the spraying system including a curing oven, a conveying device and the aforementioned spray booth, the conveying device being able to sequentially convey workpieces to the spray booth and the curing oven.

[0026] In the spray booth and spraying system provided by this utility model, the gas circulation component includes an extraction device and an exhaust pipe. The exhaust pipe has an inlet end connected to the extraction device, and a first exhaust end and a second exhaust end connected to the interior and exterior of the spray booth, respectively. Thus, the gas purified by the purification component can be extracted by the same extraction device and discharged in two separate paths. The same extraction device is used to achieve the function of internal circulation of purified gas, which is to send gas to the spray booth area to form positive pressure and extract gas to the purification component area to form negative pressure. This reduces the number of extraction devices required for air extraction and internal circulation in the spray booth, thereby simplifying the spray booth structure, reducing the material cost of the spray booth, and reducing the scheduling cost of controlling multiple fans in the spray booth. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the spray booth provided in this embodiment of the utility model;

[0029] Figure 2 yes Figure 1 A schematic diagram of the structure of the spray booth after one side wall has been removed;

[0030] Figure 3 This is a schematic diagram of the structure of the spray booth provided in this embodiment of the utility model;

[0031] Figure 4 yes Figure 3 A schematic diagram of the structure of the spray booth after one side wall has been removed;

[0032] Figure 5 This is a half-sectional schematic diagram of the exhaust pipe in the spray booth provided in this embodiment of the utility model;

[0033] Figure 6 This is a schematic diagram of the exhaust pipe structure in the spray booth provided in this embodiment of the utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] Spray booth 100; workpiece transfer port 110; filter ceiling 120; purification component 200; purification chamber 210; sprayer 220; purification tank 230; gas circulation component 300; exhaust device 310; exhaust pipe 320; circulation main pipe 321; exhaust branch pipe 322; air inlet a; first exhaust end b; second exhaust end c; flow control valve 330; valve plate 331; valve shaft 332; rotating handle 333; purification water tank 410; liquid circulation component 420; partition water tank 430; water curtain plate 440; spray table 510. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0037] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0038] To address the aforementioned technical problems, as one aspect of this utility model, a spray booth is provided, such as... Figures 1 to 4As shown, the spray booth includes a spray chamber 100, a purification component 200, and a gas circulation component 300. The air inlet of the purification component 200 is connected to the spray chamber 100. The gas circulation component 300 includes an air extraction device 310 and an exhaust pipe 320. The exhaust pipe 320 has an air inlet a and a first exhaust end b and a second exhaust end c connected to the air inlet a. The air inlet of the air extraction device 310 is connected to the air outlet of the purification component 200. The exhaust end of the air extraction device 310 is connected to the air inlet a of the exhaust pipe 320. The first exhaust end b is connected to the interior of the spray chamber 100, and the second exhaust end c is connected to the exterior of the spray chamber 100.

[0039] In the spray booth provided by this utility model, the gas circulation component 300 includes an extraction device 310 and an exhaust pipe 320. The exhaust pipe 320 has an inlet end a connected to the extraction device 310, and a first exhaust end b and a second exhaust end c connected to the inside and outside of the spray booth 100, respectively. Thus, the gas purified by the purification component 200 can be extracted by the same extraction device 310 and discharged in two separate paths. The same extraction device 310 is used to realize the internal circulation function of purified gas, which is to send gas to the area of ​​the spray booth 100 to form positive pressure and extract gas to the area of ​​the purification component 200 to form negative pressure. This reduces the number of extraction devices 310 required for air extraction and internal circulation in the spray booth, thereby simplifying the spray booth structure, reducing the material cost of the spray booth and the scheduling cost of controlling multiple fans in the spray booth.

[0040] Optionally, such as Figures 1 to 5 As shown, the air extraction device 310 can be a fan.

[0041] As an optional embodiment of this utility model, such as Figures 1 to 5 As shown, the exhaust pipe 320 includes a main circulation pipe 321 and an exhaust branch pipe 322. The two ends of the main circulation pipe 321 are respectively formed as the intake end a and the first exhaust end b of the exhaust pipe 320. One end of the exhaust branch pipe 322 is connected to the main circulation pipe 321, and the other end of the exhaust branch pipe 322 is formed as the second exhaust end c of the exhaust pipe 320.

[0042] As an optional embodiment of this utility model, such as Figures 1 to 5 As shown, the cross-sectional shape of both the circulation main pipe 321 and the exhaust branch pipe 322 is circular.

[0043] As an optional embodiment of this utility model, such as Figures 1 to 5 As shown, the cross-sectional dimension of the exhaust branch pipe 322 is smaller than that of the circulation main pipe 321.

[0044] As a preferred embodiment of this utility model, such as Figures 1 to 6As shown, the exhaust pipe 320 also includes a flow control valve 330, which is installed on the exhaust branch pipe 322 and can control the minimum flow cross-sectional area of ​​the exhaust branch pipe 322.

[0045] In this embodiment of the utility model, a flow control valve 330 is provided on the exhaust branch pipe 322. The flow control valve 330 can control the gas flow of the exhaust branch pipe 322 to change the ratio of the exhaust volume of the circulation main pipe 321 and the exhaust volume of the exhaust branch pipe 322, thereby realizing flexible control of the internal circulation gas volume and the suction volume that forms a negative pressure.

[0046] As an optional embodiment of this utility model, such as Figure 6 As shown, the flow control valve 330 can be a butterfly valve. Specifically, the flow control valve 330 includes a valve plate 331, a valve shaft 332, and a rotary handle 333. The valve plate 331 is located inside the exhaust branch pipe 322. The valve shaft 332 is fixedly connected to the valve plate 331. The side wall of the exhaust branch pipe 322 has a hinged through hole. One end of the valve shaft 332 passes through the hinged through hole to the outside of the exhaust branch pipe 322 and is fixedly connected to the rotary handle 333.

[0047] In other embodiments of this utility model, the flow control valve 330 may also be a ball valve, a gate valve, or a stop valve.

[0048] As an optional embodiment of this utility model, such as Figures 1 to 5 As shown, the circulation main pipe 321 includes a transverse air guide tube and a connecting bend tube. The air extraction device 310 is disposed on the top of the purification component 200. One end of the transverse air guide tube is formed as the air inlet a of the exhaust pipe 320, and the other end is connected to the connecting bend tube. The end of the connecting bend tube away from the transverse air guide tube is formed as the first exhaust end b, and the first exhaust end b is connected to the top of the spray chamber 100. The exhaust branch pipe 322 is connected to the transverse air guide tube.

[0049] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the spray booth includes multiple gas circulation components 300.

[0050] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, the spray booth includes two gas circulation components 300.

[0051] As an optional embodiment of this utility model, such as Figure 2 , Figure 4As shown, the purification component 200 includes a purification chamber 210, a sprayer 220, and at least one purification tank 230. The air outlet of the purification component 200 is located at the top of the purification chamber 210, and the air inlet of the purification component 200 is located at the bottom side of the purification chamber 210. The purification tank 230 is vertically arranged and can draw gas from the bottom of the purification tank 230 and discharge the gas to the top of the purification tank 230. The sprayer 220 is located at the top of the purification tank 230 and can spray liquid into the purification tank 230.

[0052] In this embodiment of the present invention, the purification component 200 includes a purification chamber 210 and a sprayer 220 and a purification tank 230 disposed in the purification chamber 210. The bottom of the purification chamber 210 is connected to the spraying chamber 100 (for example, by opening the partition between the two at the bottom). The purification tank 230 is used to extract and transport the gas to be purified from the bottom of the spraying chamber 100 into the bottom of the purification chamber 210 upward. At the same time, the sprayer 220 sprays liquid (for example, water) into the purification tank 230 so that the liquid can fully contact the gas in the purification tank 230 and absorb harmful substances in the gas. The purified gas is discharged from the top of the purification tank 230 and extracted by the exhaust device 310.

[0053] As an optional embodiment of this utility model, the diameter of the bottom end of the purification tank 230 gradually decreases from top to bottom, thereby forming a guiding slope at the bottom of the purification tank 230 to facilitate the liquid to flow out of the purification tank 230.

[0054] As an optional embodiment of this utility model, the purification tank 230 is provided with fan-shaped blades (not shown in the figure). The fan-shaped blades can change the airflow path through the purification tank into a spiral shape, so as to increase the contact area between the gas to be purified and the liquid and enhance the purification effect.

[0055] As an optional embodiment of this utility model, such as Figure 2 , Figure 4 As shown, the spray booth also includes a purification water tank 410 and a liquid circulation assembly 420. The purification water tank 410 is located at the bottom of the spray booth 100 and the purification chamber 210. The liquid circulation assembly 420 can draw liquid from the purification water tank 410 and supply the liquid to the sprayer 220, thereby continuously circulating the liquid flowing out from the bottom of the purification tank 230 to the top of the purification tank 230 to achieve water circulation.

[0056] As an optional embodiment of this utility model, such as Figure 2 , Figure 4As shown, the spray booth also includes at least one partition water tank 430, which is disposed in the spray chamber 100 and located on the side facing the air inlet of the purification component 200. The liquid circulation component 420 can also supply liquid to the partition water tank 430 so that the liquid overflowing from the partition water tank 430 forms a partition water curtain that separates the air inlet of the purification component 200 from the internal space of the spray chamber 100, thereby performing preliminary purification on the gas flowing into the bottom of the purification chamber 210 from the bottom of the spray chamber 100 through the partition water curtain.

[0057] As an optional embodiment of this utility model, such as Figure 2 , Figure 4 As shown, the spray booth includes multiple partition water tanks 430 and multiple water curtain plates 440. The water curtain plates 440 are arranged one-to-one with the partition water tanks 430 on the side away from the air inlet end of the purification component 200. The bottom position of the water curtain plate 440 of the upper partition water tank 430 corresponds to the position of the adjacent partition water tank 430 below. The liquid circulation component 420 can supply liquid to the uppermost partition water tank 430. That is, the water overflowing from the upper partition water tank 430 forms a partition water curtain below under the guiding action of the water curtain plate 440. The partition water curtain flows into the lower partition water tank 430 and forms a new partition water curtain after overflowing, thus forming a multi-level water curtain structure.

[0058] As an optional embodiment of this utility model, such as Figure 2 , Figure 4 As shown, the spray booth also includes a spraying station 510, which is located in the spraying chamber 100. Multiple spraying fixtures are fixedly installed on the spraying station 510, and the spraying fixtures are used to perform spraying operations on the workpiece.

[0059] As an optional embodiment of this utility model, such as Figures 1 to 4 As shown, a workpiece transfer port 110 is provided on the wall of the spraying chamber 100. The workpiece transfer port 110 is used for the transfer device to drive the workpiece in and out of the spraying chamber 100.

[0060] As an optional embodiment of this utility model, such as Figure 2 , Figure 4 As shown, a filter ceiling 120 is also provided in the spray booth 100. The filter ceiling 120 is horizontally arranged above the spray table 510, and the filter ceiling 120 divides the top of the spray booth 100 to form a filter space. The first exhaust end b of the exhaust pipe 320 is connected to the filter space.

[0061] As an optional embodiment of this utility model, such as Figure 1 , Figure 2As shown, the walls of the spray booth 100 are equipped with windows and doors to allow staff to enter and exit the spray booth 100 and observe the internal condition of the spray booth 100.

[0062] As a second aspect of this utility model, a spraying system is provided, which includes a curing oven, a conveying device, and a spray booth provided by this utility model. The conveying device is capable of sequentially conveying the workpiece to the spray booth and the curing oven.

[0063] It is understood that the curing oven is used to heat the sprayed workpiece to dehydrate and cure the coating on the workpiece surface. In the spraying system provided by this utility model, the gas circulation component 300 of the spray booth includes an extraction device 310 and an exhaust pipe 320. The exhaust pipe 320 has an inlet end a connected to the extraction device 310, and a first exhaust end b and a second exhaust end c connected to the inside and outside of the spray booth 100, respectively. Thus, the gas purified by the purification component 200 can be extracted by the same extraction device 310 and discharged in two separate paths. The same extraction device 310 is used to realize the internal circulation function of purified gas, which is to send gas to the area of ​​the spray booth 100 to form positive pressure and to extract gas to the area of ​​the purification component 200 to form negative pressure. This reduces the number of extraction devices 310 required for the air extraction and internal circulation of the spray booth, thereby simplifying the structure of the spray booth, reducing the material cost of the spray booth and the scheduling cost of controlling multiple fans in the spray booth.

[0064] Optionally, the conveying device may include a guide rail structure extending from the spray booth to the curing oven.

[0065] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A spray booth, comprising a spray chamber (100), a purification component (200), and a gas circulation component (300), wherein the air inlet of the purification component (200) is connected to the spray chamber (100), characterized in that, The gas circulation assembly (300) includes an exhaust device (310) and an exhaust pipe (320). The exhaust pipe (320) has an inlet end (a) and a first exhaust end (b) and a second exhaust end (c) connected to the inlet end (a). The inlet end of the exhaust device (310) is connected to the outlet end of the purification assembly (200). The exhaust end of the exhaust device (310) is connected to the inlet end (a) of the exhaust pipe (320). The first exhaust end (b) is connected to the interior of the spray chamber (100), and the second exhaust end (c) is connected to the exterior of the spray chamber (100).

2. The spray booth according to claim 1, characterized in that, The exhaust pipe (320) includes a main circulation pipe (321) and an exhaust branch pipe (322). The two ends of the main circulation pipe (321) are respectively formed as the air intake end (a) and the first exhaust end (b) of the exhaust pipe (320). One end of the exhaust branch pipe (322) is connected to the main circulation pipe (321), and the other end of the exhaust branch pipe (322) is formed as the second exhaust end (c) of the exhaust pipe (320).

3. The spray booth according to claim 2, characterized in that, The exhaust pipe (320) also includes a flow control valve (330), which is disposed on the exhaust branch pipe (322) and is capable of controlling the minimum flow cross-sectional area of ​​the exhaust branch pipe (322).

4. The spray booth according to claim 3, characterized in that, The flow control valve (330) includes a valve plate (331), a valve shaft (332), and a rotating handle (333). The valve plate (331) is located inside the exhaust branch pipe (322). The valve shaft (332) is fixedly connected to the valve plate (331). The side wall of the exhaust branch pipe (322) has a hinged through hole. One end of the valve shaft (332) passes through the hinged through hole to the outside of the exhaust branch pipe (322) and is fixedly connected to the rotating handle (333).

5. The spray booth according to claim 2, characterized in that, The circulation main pipe (321) includes a transverse air guide tube and a connecting bend tube. The air extraction device (310) is located on the top of the purification component (200). One end of the transverse air guide tube is formed as the air inlet (a) of the exhaust pipe (320), and the other end is connected to the connecting bend tube. The end of the connecting bend tube away from the transverse air guide tube is formed as the first exhaust end (b), and the first exhaust end (b) is connected to the top of the spraying chamber (100). The exhaust branch pipe (322) is connected to the transverse air guide tube.

6. The spray booth according to claim 5, characterized in that, The spray chamber includes multiple gas circulation components (300).

7. The spray booth according to any one of claims 1 to 6, characterized in that, The purification component (200) includes a purification chamber (210), a sprayer (220), and at least one purification tank (230). The air outlet of the purification component (200) is located at the top of the purification chamber (210), and the air inlet of the purification component (200) is located at the bottom side of the purification chamber (210). The purification tank (230) is vertically arranged and can draw gas from the bottom of the purification tank (230) and discharge the gas to the top of the purification tank (230). The sprayer (220) is located at the top of the purification tank (230) and can spray liquid into the purification tank (230).

8. The spray booth according to claim 7, characterized in that, The spray booth also includes a purification water tank (410) and a liquid circulation assembly (420). The purification water tank (410) is located at the bottom of the spray booth (100) and the purification chamber (210). The liquid circulation assembly (420) can draw liquid from the purification water tank (410) and supply the liquid to the sprayer (220).

9. The spray booth according to claim 8, characterized in that, The spray booth also includes at least one partition water tank (430), which is disposed in the spray chamber (100) and located on the side facing the air inlet of the purification component (200). The liquid circulation component (420) can also supply liquid to the partition water tank (430) so that the liquid overflowing from the partition water tank (430) forms a partition water curtain that separates the air inlet of the purification component (200) from the interior space of the spray chamber (100).

10. A spraying system, characterized in that, The spraying system includes a curing oven, a conveying device, and a spray booth as described in any one of claims 1 to 9, wherein the conveying device is capable of sequentially conveying the workpiece to the spray booth and the curing oven.

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