Paint spray booth

Abstract

The paint spraying room comprises a shell, a partition plate is arranged in the shell, the shell is divided into a paint spraying area and an air suction area through the partition plate, an air suction device is arranged in the air suction area, an air inlet communicated with the paint spraying area and the air suction area is formed in the partition plate, and a grating for capturing non-atomized viscous liquid drop-shaped paint is arranged at the air inlet. According to the air suction device, the purification assembly is arranged in the air suction area, viscous liquid-drop-shaped paint is captured through the arrangement of the grating, the viscous liquid-drop-shaped paint is effectively prevented from entering the air suction device, and the air suction efficiency of the air suction device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paint spray booths, in particular to a paint spray booth. BACKGROUND

[0002] A paint spray booth, as the name implies, is a room for painting and coloring objects by filtering paint spraying. It is also called a paint baking room. The paint spray booth is a device that provides a special environment for painting operations. It can meet the requirements of painting operations for temperature, humidity, illuminance, air cleanliness, etc. It can limit and treat paint mist and organic waste gas generated during paint spraying and then discharge it, which is an environmentally friendly painting device.

[0003] The paint spray booth in the prior art usually has an air suction device that extracts paint mist that is not covered on the workpiece to avoid the paint mist escaping and harming the environment and the human body.

[0004] However, the paint mist in the paint spray booth usually contains sticky liquid droplet paint that has not formed mist. The sticky liquid droplet paint has high viscosity. After being extracted by the air suction device, the sticky liquid droplet paint is easily attached to the blades of the air suction device or the inside of the air duct, which seriously affects the air suction efficiency of the air suction device. In severe cases, it may cause damage to the air suction device, affect the normal extraction function of the air suction device for paint mist, and have obvious deficiencies. CONTENT OF THE INVENTION

[0005] In order to prevent the sticky liquid droplet paint that has not formed mist from entering the inside of the air suction device and improve the air suction efficiency of the air suction device, the present application provides a paint spray booth.

[0006] The paint spray booth provided by the present application adopts the following technical scheme:

[0007] A paint spray booth comprises a shell, a partition plate is arranged in the shell, the shell is divided into a paint spraying area and an air suction area by the partition plate, an air suction device is arranged in the air suction area, an air inlet is formed in the partition plate and communicates the paint spraying area and the air suction area, a grid for capturing sticky liquid droplet paint that has not formed mist is arranged at the air inlet, and a purification assembly is arranged in the air suction area.

[0008] By adopting the above technical scheme, the air suction device extracts air in the air suction area to form a negative pressure environment in the air suction area. At this time, the paint mist in the paint spraying area enters the inside of the air suction area through the air inlet under the driving of the pressure difference. When the paint mist passes through the grid, the sticky liquid droplet paint in the paint mist gas is intercepted by the grid. The remaining paint mist gas enters the inside of the air suction area through the grid and is purified by the purification assembly. The purified gas is discharged from the shell. The grid is arranged to capture the sticky liquid droplet paint, effectively prevent the sticky liquid droplet paint from entering the inside of the air suction device, and improve the air suction efficiency of the air suction device.

[0009] Optionally, connecting components are provided on both opposite sides of the grille, and the grille is detachably connected to the air inlet via the connecting components.

[0010] By adopting the above technical solution, as the number of viscous droplets of paint intercepted increases, the ventilation capacity and ability to capture sticky paint of the grille weaken. At this point, workers can remove the grille from the air inlet using the connecting components, and then clean or replace the grille to restore its ventilation performance and interception effect. Finally, workers install a new grille at the air inlet. The connecting components enable workers to easily replace the grille, ensuring the grille's ventilation performance and its ability to intercept viscous paint.

[0011] Optionally, the air inlet has a slot, the grille has a receiving groove with the same cross-sectional size as the slot, the connecting assembly includes an insert plate slidably connected in the receiving groove, the insert plate is provided with a toggle block, the grille has a toggle groove that slidably engages with the toggle block, and a first spring is provided in the receiving groove. When the receiving groove is connected to the slot, the end of the insert plate is pressed against the inside of the slot by the elastic force of the first spring, and the toggle block moves to the end of the toggle groove near the slot.

[0012] By adopting the above technical solution, during disassembly, the worker simultaneously moves two levers, causing the insert plate to move into the receiving groove. The insert plate disengages from the slot, and the worker removes the grille from the air inlet. During installation, the worker first moves the two levers to move the insert plate into the receiving groove, compressing the first spring. Then, the grille is placed at the air inlet with the receiving groove aligned with the slot. Finally, the worker releases the force on the levers, and the first spring returns to its original position, pushing the end of the insert plate into the slot, thus installing the grille. This design enables convenient disassembly and installation of the grille at the air inlet, improving the ease of operation for workers.

[0013] Optionally, the purification component includes an activated carbon adsorption layer and a demister. The demister is composed of multiple corrugated demister plates, and a demister channel is formed between two adjacent demister plates. The demister is located at one end of the activated carbon adsorption layer near the air inlet.

[0014] By adopting the above technical solution, the paint mist exhaust gas enters the suction zone after passing through the grille. The paint mist exhaust gas first comes into contact with the demister, and the flow direction of the gas is changed by the corrugated demister plate. The residual liquid droplets in the gas deviate from the flow direction of the gas under the action of inertia and finally collide with the demister plate and are separated. In this way, the viscous liquid droplets in the paint mist exhaust gas are further removed, and the possibility of the suction device being blocked is further reduced. Finally, the paint mist exhaust gas passes through the activated carbon adsorption layer. The activated carbon adsorption layer absorbs the harmful components in the paint mist gas, thereby purifying the paint mist gas. The setting of the purification components reduces the possibility of the suction device being blocked due to the residue of liquid droplets, and at the same time deeply purifies the harmful gases in the paint mist, reducing the pollution emissions to the environment.

[0015] 1. Optionally, both the activated carbon adsorption layer and the outer surface of the demister are fitted with mounting frames. The housing has mounting grooves that slide with the mounting frames. The mounting frames are fixed inside the mounting grooves by fixing components. The fixing components include two snap-fit ​​plates that slide with the outer surface of the mounting frames. The mounting frames have moving grooves that slide with the two snap-fit ​​plates. The outer surface of the housing is provided with snap-fit ​​sleeves that correspond one-to-one with the two snap-fit ​​plates. The snap-fit ​​sleeves snap with the corresponding snap-fit ​​plates. The mounting frames are provided with operating components that drive the snap-fit ​​plates to move along the moving grooves.

[0016] By adopting the above technical solution, when the activated carbon adsorption layer and demister need to be replaced due to prolonged use, the worker uses the operating component to separate the snap-fit ​​plate from the snap-fit ​​sleeve. The worker then pulls the installation frame out of the suction area, thus disassembling the activated carbon adsorption layer or demister. After disassembly, the worker slides the new installation frame into the installation slot and then uses the operating component to re-snap the snap-fit ​​plate into the snap-fit ​​sleeve, thereby installing the activated carbon adsorption layer or demister inside the suction area. This design enables convenient replacement of the activated carbon adsorption layer and demister. The entire replacement process does not require the worker to operate in the confined space inside the suction area, improving the ease of operation and ensuring the purification effect of the purification components.

[0017] Optionally, the operating component includes a gear rotatably connected to the outer surface of the mounting frame. Rack plates are meshed on opposite sides of the gear. Two rack plates are correspondingly arranged with two snap-fit ​​plates. The rack plates are slidably connected in the moving groove and fixedly connected to the corresponding snap-fit ​​plates. A second spring is provided in each moving groove. One end of the second spring is provided on the inner side wall of the moving groove, and the other end is provided on the rack plate. When the snap-fit ​​plate is snapped into the snap-fit ​​sleeve, the second spring is in its natural state.

[0018] By adopting the above technical solution, when the mounting frame needs to be removed, the worker rotates the gear forward. The rotation of the gear causes the two rack plates to slide towards the gear. The rack plates compress the second spring, and the movement of the rack plates causes the snap-fit ​​plate to disengage from the snap-fit ​​sleeve. The fixed state of the fixing component is released, and the mounting frame can be pulled out of the suction area. After the mounting frame is disassembled, the worker pushes the new mounting frame into the mounting groove, and then rotates the gear forward to keep the snap-fit ​​plate detached from the snap-fit ​​sleeve. When the snap-fit ​​plate moves to be directly opposite the insertion sleeve, the operation on the gear is released, the second spring resets, and pushes the rack plate towards the insertion sleeve. The rack plate drives the snap-fit ​​plate to re-insert into the snap-fit ​​sleeve, thus fixing the mounting frame.

[0019] Optionally, a shield is provided in the slot. The shield is a telescopic accordion cover. One end of the shield is located at the end of the slot away from the slot, and the other end is located on the lever.

[0020] By adopting the above technical solution, when the grille is installed at the air inlet, the shield always covers the slot, thereby effectively preventing paint mist gas from entering the receiving groove through the slot, preventing paint mist from accumulating and condensing in the receiving groove, and preventing the insert plate from being unable to slide normally in the receiving groove due to paint mist solidification, thus ensuring the stability of the connection of the connecting components.

[0021] Optionally, the inner wall of the suction zone is coated with a polytetrafluoroethylene coating.

[0022] By adopting the above technical solution, the polytetrafluoroethylene coating has good corrosion resistance and smoothness, effectively reducing the possibility of liquid adhering to the inner wall of the suction area in the paint mist gas, and improving the service life of the spray booth.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This application achieves the capture of viscous droplet-like paint by setting a grid, which effectively prevents viscous droplet-like paint from entering the suction device and improves the suction efficiency of the suction device;

[0025] 2. This application incorporates a connecting component, which enables workers to easily replace the grille, ensuring the grille's ventilation performance and its ability to intercept viscous paint.

[0026] 3. This application sets up an operating component and a fixing component, which enable convenient replacement of the activated carbon adsorption layer or the demister, thus ensuring the purification effect of the purification component. Attached Figure Description

[0027] Figure 1 This is a structural diagram of this application.

[0028] Figure 2 This is a cross-sectional view of the air intake zone in an embodiment of this application.

[0029] Figure 3 This is a cross-sectional view of the partition in an embodiment of this application.

[0030] Figure 4 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 5 This is a schematic diagram of the structure of the fixing component and the operating component in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 01, housing; 02, suction device; 011, paint spraying area; 012, suction area; 1, partition; 2, air inlet; 21, slot; 3, grille; 31, receiving groove; 32, toggle groove; 321, shield; 4, purification component; 41, activated carbon adsorption layer; 42, demister; 421, demister plate; 5, connecting component; 51, insert plate; 52, toggle block; 53, first spring; 6, mounting frame; 61, moving groove; 7, mounting groove; 8, fixing component; 81, snap-fit ​​plate; 82, snap-fit ​​sleeve; 9, operating component; 91, gear; 92, rack plate; 93, second spring. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0034] This application discloses a spray booth.

[0035] Reference Figure 1 and Figure 2 A spray booth includes a shell 01 constituting the spray booth. A partition 1 is fixedly installed inside the shell 01, dividing the interior of the shell 01 into a spraying area 011 and a suction area 012. A spray gun (not shown in the figure) for spraying is installed in the spraying area 011. A suction device 02 is installed on the top wall of the suction area 012. In this embodiment, the suction device 02 is a suction fan. The inner sidewall of the suction area is coated with a polytetrafluoroethylene coating. The polytetrafluoroethylene coating has good corrosion resistance and smoothness, effectively reducing the possibility of liquid in the paint mist adhering to the inner sidewall of the suction area 012.

[0036] Reference Figure 1 and Figure 2 The partition 1 has an air inlet 2, which connects the painting area 011 and the suction area 012. The air inlet 2 is equipped with a grille 3 to capture the viscous droplets of paint that have not yet formed a mist. The suction area 012 is equipped with a purification component 4 to purify the paint mist gas.

[0037] The suction device 02 draws in air from the suction zone 012, creating a negative pressure environment inside the suction zone 012. At this time, the paint mist in the painting zone 011 enters the suction zone 012 through the air inlet 2 under the pressure difference. When the paint mist passes through the grille 3, the viscous droplets of paint in the paint mist gas are intercepted by the mesh of the grille 3. After preliminary separation, the paint mist gas enters the suction zone 012 through the grille 3 and is purified by the purification component 4. The purified gas is discharged from the housing 01. The setting of the grille 3 achieves the capture of viscous droplets of paint, effectively preventing viscous droplets of paint from entering the suction device 02 and improving the suction efficiency of the suction device 02.

[0038] Reference Figure 2 and Figure 3 The grille 3 has connecting components 5 on both sides. The grille 3 is detachably connected to the air inlet 2 through the connecting components 5. Specifically, the air inlet 2 has a slot 21, and the grille 3 has a receiving groove 31 with the same cross-sectional size as the slot 21. The receiving groove 31 is slidably connected to the insert plate 51, which is inserted into the slot 21. A toggle block 52 is fixedly installed on the surface of the insert plate 51. The grille 3 has a toggle block 52 on the insert plate 51, which is slidably connected to the toggle block 52. The grille 3 has a toggle groove 32, which is slidably connected to the toggle block 52. The toggle groove 32 is connected to the receiving groove 31. A first spring 53 is installed inside the receiving groove 31. One end of the first spring 53 is fixedly connected to the side wall of the receiving groove 31 away from the slot 21, and the other end is fixedly connected to the insert plate 51. When the receiving groove 31 is connected to the slot 21, the end of the insert plate 51 is pressed against the inside of the slot 21 by the elastic force of the first spring 53, and the toggle block 52 moves to the end of the toggle groove 32 near the air inlet 2.

[0039] Reference Figure 2 , Figure 3 and Figure 4 The slot 32 is provided with a shield 321. The shield 321 is a telescopic accordion cover. One end of the shield 321 is fixedly connected to the inner side wall of the slot 32 away from the slot 21, and the other end is fixedly connected to the lever 52. When the insert plate 51 is inserted into the slot 21, the shield 321 and the lever 52 together shield the slot 32.

[0040] As the number of viscous droplets of paint intercepted by the grille increases, the ventilation capacity and ability to capture sticky paint of the grille 3 weaken. At this time, the worker simultaneously moves two levers 52. The levers 52 move and drive the insert plate 51 to move into the receiving groove 31. The insert plate disengages from the slot 21. The worker removes the grille 3 from the air inlet 2 and cleans or replaces the grille 3 to restore the ventilation performance and interception effect of the grille 3.

[0041] After cleaning, the worker moves the two levers 52 to move the insert into the receiving groove 31, compressing the first spring 53. Then, the grille 3 is placed at the air inlet 2 with the receiving groove 31 facing the slot 21. Finally, the worker releases the force on the levers 52, and the first spring 53 returns to its original position, pushing the end of the insert into the slot 21. At the same time, the insert plate 51 moves the levers 52 to the end of the groove 32 near the slot 21. The shield 321 and the levers 52 together cover the groove 32, effectively preventing paint mist gas from entering the receiving groove 31 through the groove 32 and affecting the connection between the grille 3 and the air inlet 2. This setting enables convenient disassembly and installation of the grille 3 at the air inlet 2, ensuring the ventilation performance of the grille 3 and the interception effect of viscous paint.

[0042] Reference Figure 2 and Figure 5 The purification component 4 includes an activated carbon adsorption layer 41 and a demister 42 disposed inside the suction zone 012. The demister 42 and the activated carbon adsorption layer 41 are arranged sequentially along the direction of paint mist gas flow. The demister 42 is composed of multiple wavy demister plates 421, and a demister channel is formed between two adjacent demister plates 421. After the paint mist exhaust gas enters the suction zone 012, it first contacts the demister 42. The wavy demister plates 421 change the direction of gas flow, and the residual droplets in the gas deviate from the direction of gas flow under the action of inertia, and finally collide with the demister plates 421 and are separated. In this way, the viscous droplets in the paint mist exhaust gas are further removed. Finally, the paint mist exhaust gas passes through the activated carbon adsorption layer 41, which absorbs the harmful components in the paint mist gas, thereby purifying the paint mist gas. The arrangement of the purification component 4 reduces the possibility of blockage of the suction device 02 due to residual droplets, and at the same time deeply purifies the harmful gases in the paint mist, reducing pollution emissions to the environment.

[0043] Reference Figure 2 and Figure 5 As the usage time increases, the activated carbon adsorption layer 41 and the demister 42 will become saturated, which will reduce the purification effect of the purification component 4 on the paint mist gas and make it unable to effectively remove residual droplets and harmful components in the paint mist gas.

[0044] To address this issue, mounting frames 6 are fixedly fitted onto the outer surfaces of both the activated carbon adsorption layer 41 and the demister 42. The housing 01 has mounting grooves 7 corresponding to the two mounting frames 6. The mounting frames 6 are slidably connected within their respective mounting grooves 7. The mounting frames 6 are fixed within the mounting grooves 7 by fixing components 8. The fixing components 8 include two snap-fit ​​plates 81 slidably connected to the outer surface of the mounting frames 6, with the two snap-fit ​​plates 81 positioned opposite each other. The mounting frames 6 have sliding grooves 61 that slidably engage with the two snap-fit ​​plates 81. The outer surface of the housing 01 is fixedly connected to snap-fit ​​sleeves 82 corresponding to the two snap-fit ​​plates 81. The two snap-fit ​​sleeves 82 are respectively positioned on both sides of the groove opening of the mounting groove 7. The snap-fit ​​plates 81 engage with their corresponding snap-fit ​​sleeves 82. The mounting frames 6 are equipped with an operating component 9 that drives the pin rod to move along the sliding rod groove.

[0045] Reference Figure 2 and Figure 5 The operating component 9 includes a gear 91 rotatably connected to the outer surface of the mounting frame 6. On opposite sides of the gear 91, there are rack plates 92 that mesh with the two snap-fit ​​plates 81. The rack plates 92 are slidably connected in the moving groove 61 and fixedly connected to the corresponding snap-fit ​​plates 81. Each moving groove 61 is provided with a second spring 93. One end of the second spring 93 is fixedly connected to the inner side wall of the moving groove 61, and the other end is fixedly connected to the rack plate 92. When the second spring 93 is in its natural state, the snap-fit ​​plate 81 is snapped into the snap-fit ​​sleeve 82.

[0046] When the activated carbon adsorption layer 41 or the demister 42 needs to be replaced, the worker rotates the gear 91 forward. The rotation of the gear 91 causes the two rack plates 92 to slide towards the gear 91. The rack plates 92 compress the second spring 93. The movement of the rack plates 92 causes the snap plate 81 to disengage from the snap sleeve 82, and the fixed state of the fixing component 8 is released. At this time, the worker pulls the mounting frame 6 to pull the mounting groove 7 out of the mounting groove 7, thereby realizing the disassembly of the activated carbon adsorption layer 41 or the demister 42.

[0047] After disassembly, the worker pushes the new mounting frame 6 into the mounting slot 7, and then rotates the gear 91 forward to keep the snap plate 81 detached from the snap sleeve 82. When the snap plate 81 moves to be directly opposite the insertion sleeve, the force on the gear 91 is released, the second spring 93 resets and pushes the rack plate 92 toward the insertion sleeve. The rack plate 92 drives the snap plate 81 to re-insert into the snap sleeve 82, thereby realizing the installation of the activated carbon adsorption layer 41 or the demister 42.

[0048] The implementation principle of a spray booth according to an embodiment of this application is as follows: the suction device 02 draws in air from the suction zone 012, creating a negative pressure environment inside the suction zone 012. At this time, the paint mist in the spray zone 011 enters the suction zone 012 through the air inlet 2 under the drive of the pressure difference. When the paint mist passes through the grid 3, the viscous droplets of paint in the paint mist gas are intercepted by the mesh of the grid 3. After preliminary separation, the paint mist gas enters the suction zone 012 through the grid 3 and is purified by the purification component 4. The purified gas is discharged from the housing 01. The grid 3 is set to capture the viscous droplets of paint, effectively preventing the viscous droplets of paint from entering the suction device 02 and improving the suction efficiency of the suction device 02.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A paint spraying room, comprising a housing (01), a partition (1) is arranged in the housing (01), the housing (01) is divided into a paint spraying area (011) and an air suction area (012) by the partition (1), an air suction device (02) is arranged in the air suction area (012), characterized in that, The partition plate (1) is provided with an air inlet (2) communicating the paint spraying area (011) and the air suction area (012), the air inlet (2) is provided with a grid (3) for capturing sticky liquid droplet paint, the air suction area (012) is internally provided with a purification assembly (4), the purification assembly (4) comprises an activated carbon adsorption layer (41) and a demister (42), the demister (42) is composed of a plurality of wave-shaped demisting plates (421), a demisting channel is formed between two adjacent demisting plates (421), the demisting plate (42) is arranged at one end of the activated carbon adsorption layer (41) close to the air inlet (2), the outer surfaces of the activated carbon adsorption layer (41) and the demister (42) are sleeved with mounting frames (6), the shell (01) is provided with mounting grooves (7) in sliding fit with the mounting frames (6), the mounting frames (6) are fixed in the mounting grooves (7) by fixing assemblies (8), the fixing assemblies (8) comprise two clamping plates (81) slidably connected to the outer surfaces of the mounting frames (6), the mounting frames (6) are provided with moving grooves (61) in sliding fit with the two clamping plates (81), the outer surface of the shell (01) is provided with clamping sleeves (82) corresponding to the two clamping plates (81), the clamping sleeves (82) are clamped and fitted with the corresponding clamping plates (81), the mounting frames (6) are provided with operation assemblies (9) for driving the clamping plates (81) to move along the moving grooves (61), the operation assemblies (9) comprise gear wheels (91) rotatably connected to the outer surfaces of the mounting frames (6), the gear wheels (91) are provided with rack plates (92) in engagement on opposite sides, the two rack plates (92) are provided in one-to-one correspondence with the two clamping plates (81), the rack plates (92) are slidably connected in the moving grooves (61) and fixedly connected with the corresponding clamping plates (81), each moving groove (61) is provided with a second spring (93), one end of the second spring (93) is arranged on the inner wall of the moving groove (61), and the other end is arranged on the rack plate (92), when the clamping plate (81) is clamped in the clamping sleeve (82), the second spring (93) is in a natural state.

2. A booth according to claim 1, wherein The opposite sides of the grid (3) are provided with connecting assemblies (5), and the grid (3) is detachably connected at the air inlet (2) through the connecting assemblies (5).

3. A booth according to claim 2, wherein The air inlet (2) is provided with a slot (21), the grid (3) is provided with a containing groove (31) with the same cross-sectional size as the slot (21), the connecting assembly (5) comprises an insertion plate (51) slidably connected in the containing groove (31), the insertion plate (51) is provided with a pushing block (52), the grid (3) is provided with a pushing groove (32) slidably matched with the pushing block (52), the containing groove (31) is provided with a first spring (53), when the containing groove (31) is communicated with the slot (21), the end of the insertion plate (51) is abutted against the inside of the slot (21) by the elastic force of the first spring (53), and the pushing block (52) is moved to the end of the pushing groove (32) close to the slot (21).

4. A booth according to claim 3, wherein The pushing groove (32) is provided with a shielding cover (321), the shielding cover (321) is a telescopic piano cover, one end of the shielding cover (321) is arranged at the end of the pushing groove (32) away from the slot (21), and the other end is arranged on the pushing block (52).

5. A booth as claimed in claim 1, wherein, The inner side wall of the air suction area (012) is coated with a polytetrafluoroethylene coating.

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