Dry type spray booth system

Abstract

The invention discloses a dry type spray booth system which comprises an operation room, a spray booth body, a spray booth body, a spray booth body, a spray booth body and a spray booth body. The operating room comprises a first air supply area and a second air supply area, the air supply direction of the first air supply area faces the second air supply area, the second air supply area supplies air downwards, and the air speed of the second air supply area is larger than that of the first air supply area. According to the paint mist collecting device, the second air supply area is arranged, by means of the second air supply area, extra paint mist is enriched in the air direction of the second air supply area and enters the paint mist filtering unit for paint mist collection, the situation that a large amount of paint mist is left on the rear side of the paint spraying chamber is avoided, and pollution caused in the paint spraying process is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a paint spray booth, in particular to a dry paint spray booth system. BACKGROUND

[0002] Traditional paint spraying needs to be carried out in a paint spray booth. First, the workpiece is placed in the paint spray booth, and the paint spraying is completed by spraying paint on the workpiece. During the paint spraying process, additional paint mist cannot be avoided, which will adhere to the inside of the paint spray booth, causing pollution of the paint spray booth. To solve this pollution problem, the paint spray booth needs to be cleaned regularly, or a plastic film is laid on the inner wall of the paint spray booth, and the collection of the over-sprayed paint mist is achieved by replacing the plastic film.

[0003] However, the above two methods require a large amount of manual work or frequent replacement of the inner film of the paint spray booth, which does not meet the current green environmental protection concept, and the quality fluctuation caused by the solid particles generated after the over-sprayed paint particles are dried. SUMMARY

[0004] To solve the above problems, the present application discloses a dry paint spray booth system, comprising:

[0005] An operation room is used to place the workpiece for paint spraying. The operation room comprises a first air supply area and a second air supply area. The air supply direction of the first air supply area is towards the second air supply area. The second air supply area supplies air downward. The air speed of the second air supply area is greater than that of the first air supply area.

[0006] Further, the wind field speed of the second air supply area is 1.5-7 times the wind field speed of the first air supply area.

[0007] Further, the dry paint spray booth system further comprises:

[0008] A paint mist filtering unit is provided with a recovery port. The paint mist filtering unit is located below the operation room. The air supply direction of the second air supply area is towards the recovery port of the paint mist filtering unit.

[0009] Further, the recovery port of the paint mist filtering unit is a funnel-shaped structure.

[0010] Further, the dry paint spray booth system further comprises:

[0011] A variable frequency exhaust fan is connected to the paint mist filtering unit, which is used to provide negative pressure to the paint mist filtering unit.

[0012] Further, the dry paint spray booth system further comprises:

[0013] A dynamic pressure chamber and a differential speed static pressure chamber are connected by an electrically-operated fine adjustment air valve, the differential speed static pressure chamber is connected with a second air supply area, and is used for supplying air downward into the second air supply area.

[0014] Further, the dry paint spraying room system further comprises:

[0015] A differential pressure sensor A is used for acquiring the pressure difference between the dynamic pressure chamber and the differential speed static pressure chamber.

[0016] A differential pressure sensor B is used for acquiring the pressure difference between the differential speed static pressure chamber and the second air supply area.

[0017] Further, the differential speed static pressure chamber is provided with a differential speed generating device, the differential speed generating device is provided with a variable frequency cross-flow fan, and the differential speed static pressure chamber supplies air to the second air supply area through the differential speed generating device.

[0018] Further, the dry paint spraying room system further comprises:

[0019] A variable frequency air supply fan is connected with the dynamic pressure chamber and is used for supplying air into the dynamic pressure chamber.

[0020] Further, the first air supply area is provided with an anemometer A, and the paint mist filtering unit is provided with an anemometer B.

[0021] Compared with the prior art, the second air supply area is arranged, the additional paint mist is enriched downward by the air of the second air supply area, and is introduced into the paint mist filtering unit to collect the paint mist, so that the paint mist is prevented from remaining at the rear side of the paint spraying room in a large amount, and pollution caused by the paint spraying process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the principle of the embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to enable personnel in the technical field to better understand the present application scheme, the technical solutions in the embodiments of the present application will be clearly and completely described below, and obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments.

[0025] The present application discloses a dry paint spraying room system, which comprises:

[0026] The operation room, such as Figure 1As shown, the operation room is used for placing workpieces for paint spraying; the operation room comprises a first air supply area and a second air supply area, the air supply direction of the first air supply area is towards the second air supply area, the second air supply area supplies air downward, and the air speed of the second air supply area is greater than that of the first air supply area.

[0027] The operation room is provided with a chamber rear wall plate in the second air supply area, the chamber rear wall plate can be used as a flow guide interface to achieve the air guide effect and conduct the air in the second air supply area downward.

[0028] In actual work, workers can place workpieces in the first air supply area through a conveyor belt or a mechanical arm or manually, spray paint on the workpieces in the first air supply area from a side far away from the second air supply area, and the paint mist is partially attached to the workpieces in the first air supply area, while the extra paint mist is not attached to the first air supply area and flies to the second air supply area and moves downward directly under the action of the air field in the second air supply area without being attached to the chamber rear wall plate, so that the chamber rear wall plate is cleaned.

[0029] Compared with the same plastic film, the maintenance period of the present application is undoubtedly greatly prolonged, the production efficiency is improved, and the quality fluctuation in the maintenance period is reduced.

[0030] The paint spraying room system with a mixed air field is designed based on the Bernoulli principle and the Coanda effect, over-sprayed paint mist is efficiently collected in the paint spraying operation room, and the production rate loss caused by maintenance in the paint spraying room is greatly reduced.

[0031] Optionally, the air field speed of the second air supply area is 1.5-7 times that of the first air supply area.

[0032] Optionally, the air field speed of the second air supply area is 1.5-7 times that of the first air supply area.

[0033] The accurate control of the chamber in the embodiment is particularly important, and if the design structure is unreasonable, the air field in the working area will be disordered and turbulent, which not only cannot play a role in directional collection of paint mist but also can cause the paint mist to scatter and pollute more seriously, and if the speed difference is too small, the paint mist cannot be isolated, the embodiment sets the air field speed of the second air supply area to be 2-5 times that of the first air supply area, and it is measured that the isolation and recovery efficiency is good, that is, no obvious turbulence is caused, and the paint mist cannot pass through the air field of the second air supply area to pollute the back plate structure of the paint spraying room.

[0034] Optionally, the dry paint spraying room system further comprises:

[0035] The paint mist filtering unit is provided with a recovery port, is located below the operation room, and the air supply direction of the second air supply area is towards the recovery port of the paint mist filtering unit.

[0036] As shown in Figure 1 , 2 The paint mist filtering unit is provided with filter cotton, which can effectively filter the paint mist in the air and avoid diffusion into the air.

[0037] The paint mist filtering unit can filter the blown air, achieving the effect of purifying the air.

[0038] In particular, the recovery port of the paint mist filtering unit is in a funnel structure.

[0039] As shown in Figure 1 The recovery port of the paint mist filtering unit is provided above, the air field of the second air supply area blows downwards into the recovery port of the paint mist filtering unit, and the funnel-shaped recovery port is wide at the top and narrow at the bottom, which can facilitate the air blowing into the paint mist filtering unit without causing excessive turbulence.

[0040] In particular, the dry paint spraying room system further comprises:

[0041] The variable frequency exhaust fan is connected with the paint mist filtering unit and is used to provide negative pressure into the paint mist filtering unit.

[0042] Optionally, the dry paint spraying room system further comprises:

[0043] The dynamic pressure chamber and the speed static pressure chamber are connected through the electric micro-adjusting air valve, the speed static pressure chamber is connected with the second air supply area, and is used to send the downward air into the second air supply area.

[0044] As shown in Figure 1 , Figure 2 The pressure in the dynamic pressure chamber dynamically changes, the air force can be adjusted through the electric micro-adjusting air valve, the pressure in the speed static pressure chamber is constant, and the control of the air speed in the second air supply area is facilitated.

[0045] In particular, the dry paint spraying room system further comprises:

[0046] The differential pressure sensor A is used to obtain the pressure difference between the dynamic pressure chamber and the speed static pressure chamber.

[0047] The differential pressure sensor B is used to obtain the pressure difference between the speed static pressure chamber and the second air supply area.

[0048] As shown in Figure 1As shown, differential pressure sensor A can monitor the pressure difference between the dynamic pressure chamber and the velocity-dependent static pressure chamber, thereby enabling precise control of the electric fine-tuning air valve and ensuring pressure stability within the velocity-dependent static pressure chamber. Differential pressure sensor B, on the other hand, can monitor the pressure difference between the velocity-dependent static pressure chamber and the second air supply zone, thereby enabling pressure monitoring of the second air supply zone and preventing airflow disturbances in the second air supply zone.

[0049] Specifically, the velocity-dividing static pressure chamber is equipped with a variable velocity generator, which contains a variable frequency cross-flow fan. The velocity-dividing static pressure chamber supplies air to the second air supply zone via the variable velocity generator.

[0050] Among them, such as Figure 1 As shown, the variable speed generator is equipped with a variable frequency cross-flow fan or high-speed air nozzle, which allows the velocity-dividing static pressure chamber to deliver multiple air speeds to the second air supply zone.

[0051] Specifically, the dry spray booth system also includes:

[0052] A variable frequency blower is connected to the dynamic pressure chamber and is used to supply air into the dynamic pressure chamber.

[0053] Specifically, the first air supply zone is equipped with an anemometer A, and the paint mist filtration unit is equipped with an anemometer B.

[0054] By setting up anemometers A and B, the wind speed in the first air supply zone and the wind speed at the outlet of the paint mist filtration unit can be monitored, thereby obtaining the wind speed value in the second air supply zone and realizing the monitoring of wind speed at multiple locations in the paint spray booth system.

[0055] In some optional embodiments, a blower may be installed in the first air supply zone. Data from differential pressure sensors A and B, as well as anemometers A and B, is collected and combined with the outlet wind speed of the variable-speed air generator. Based on an airflow balance algorithm within the paint booth, the opening of the damper and the frequency of the blower are adjusted. Specifically, the wind speed in the first air supply zone is converted from data from differential pressure sensor B using an algorithm and compared with data from anemometer A. The wind speed of the variable-speed air generator is then adjusted to 1.5-5 times that of the low-speed air supply zone. The variable-frequency exhaust fan calculates its exhaust operating frequency by multiplying the total airflow of the high and low-speed airflow zones in the first air supply zone by a constant, ensuring that the air pressure inside the paint booth remains in a slightly negative pressure state. Anemometer B serves as a data verification tool, only collecting and correcting data when the airflow balance algorithm fails.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading this application specification, they can still modify or make equivalent substitutions to the specific implementation of the present invention, but these modifications or changes do not depart from the protection scope of the pending claims of the present invention.

Claims

1. A dry paint spray booth system characterized by, The dry paint spraying chamber system comprises: An operation room for placing workpieces for paint spraying; the operation room comprises a first air supply area and a second air supply area, the air supply direction of the first air supply area is towards the second air supply area, the second air supply area supplies air downward, and the air speed of the second air supply area is greater than that of the first air supply area.

2. A dry paint booth system according to claim 1, wherein, The air field speed of the second air supply area is 1.5-7 times that of the first air supply area.

3. A dry paint booth system as defined in claim 1, wherein, The dry paint spraying chamber system further comprises: A paint mist filtering unit provided with a recovery port, the paint mist filtering unit is located below the operation room, and the air supply direction of the second air supply area is towards the recovery port of the paint mist filtering unit.

4. A dry spray booth system according to claim 3, wherein, The recovery port of the paint mist filtering unit is a funnel structure.

5. A dry spray booth system according to claim 3, wherein, The dry paint spraying chamber system further comprises: A variable frequency exhaust fan connected with the paint mist filtering unit, used for providing negative pressure in the paint mist filtering unit.

6. A dry paint booth system as defined in claim 1, wherein, The dry paint spraying chamber system further comprises: A dynamic pressure chamber and a speed-dividing static pressure chamber, the dynamic pressure chamber and the speed-dividing static pressure chamber are connected through an electric micro-adjusting air valve, the speed-dividing static pressure chamber is connected with the second air supply area, and used for supplying air downward into the second air supply area.

7. A dry spray booth system according to claim 6, wherein, The dry paint spraying chamber system further comprises: A differential pressure sensor A used for acquiring the pressure difference between the dynamic pressure chamber and the speed-dividing static pressure chamber; A differential pressure sensor B used for acquiring the pressure difference between the speed-dividing static pressure chamber and the second air supply area.

8. A dry paint booth system as defined in claim 6, wherein, The speed-dividing static pressure chamber is provided with a different speed generating device, the different speed generating device is provided with a variable frequency cross-flow fan or a high-speed airflow generating device, and the speed-dividing static pressure chamber supplies air to the second air supply area through the different speed generating device.

9. A dry paint booth system as defined in claim 6, wherein, The dry paint spraying chamber system further comprises: A variable frequency air supply fan connected with the dynamic pressure chamber, used for supplying air into the dynamic pressure chamber.

10. A dry paint booth system as defined in claim 3, wherein, The first air supply area is provided with an anemometer A, and the paint mist filtering unit is provided with an anemometer B.

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