A water curtain system for capturing paint mist

Abstract

The present invention proposes a water curtain system for capturing paint mist, comprising a paint mist collection component, a water curtain generating component and an air-water separation component, wherein the air inlet of the paint mist collection component is connected to a paint spraying space, and the air outlet thereof is connected to an exhaust device; the water curtain generating component is assembled in the paint mist collection component and is located at the air inlet of the paint mist collection component, the inlet of the water curtain generating component is connected to a water supply device, and the outlet thereof is connected to a recovery device, a water curtain is generated in the process of water flowing in the water curtain generating component, and the paint mist in the paint spraying space enters the paint mist collection component and passes through the water curtain; the air-water separation component is assembled in the paint mist collection component and is located at the air outlet of the paint mist collection component, the inlet of the air-water separation component is connected to the outlet of the water curtain generating component, the outlet thereof is connected to the air outlet of the paint mist collection component, the drain outlet thereof is connected to the recovery device, and the air-water mixture in the water curtain generating component enters the air-water separation component.

Description

Technical Field

[0001] The invention relates to paint spraying equipment, in particular to a water curtain system for capturing paint mist. Background Art

[0002] During the painting process, the paint is atomized into particles under high pressure, but after being sprayed from the spray gun, not all the paint will adhere to the surface of the object to be painted. About half of the paint will float in the air, and this part of the paint is called "overspray". The oversprayed paint particles form paint mist with the airflow. If these oversprayed paint mists are not treated, not only will the air cleanliness in the spraying area fail to meet the requirements, but also pollute the objects to be painted, and a large amount of toxic gases will accumulate in the spraying area, which will not only pollute the surrounding air but also prevent personnel from entering the area for normal operation. In order to create a space that can meet the conditions required for spraying operations, the paint mist must be centrally treated and discharged in compliance with standards. Commonly used wet paint mist capture equipment uses a water curtain system to capture and process paint mist, but its capture efficiency needs to be improved. The mixing of paint mist and water curtain is not sufficient, resulting in a large amount of paint mist dissipation, which greatly increases the cost of subsequent waste gas treatment and air recycling. Therefore, it is necessary to optimize the structure of this water curtain system to overcome the above defects. Summary of the invention

[0003] The purpose of the present invention is to provide a water curtain system for capturing paint mist to improve the paint mist capturing efficiency.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A water curtain system for capturing paint mist, comprising:

[0006] A paint mist collection component, the air inlet of which is connected to the paint spraying space, and the air outlet of which is connected to the exhaust device, so that the paint mist generated by the paint spraying operation in the paint spraying space is brought into the paint mist collection component by the exhaust device;

[0007] A water curtain generating component, which is assembled in the paint mist receiving component and is located at the air inlet of the paint mist receiving component. The inlet of the water curtain generating component is connected to the water supply device, and the outlet thereof is connected to the recovery device. The water supply device supplies water to the water curtain generating component. The water generates a water curtain during the flow of water in the water curtain generating component. The paint mist in the spray painting space enters the paint mist receiving component and passes through the water curtain. The paint in the paint mist combines with water to form a paint-water mixture. The air in the paint mist combines with water to form an air-water mixture. The paint-water mixture enters the recovery device through the outlet of the water curtain generating component.

[0008] An air-water separation component is installed in the paint mist collection component and is located at the air outlet of the paint mist collection component. The inlet of the air-water separation component is connected with the outlet of the water curtain generation component, and its outlet is connected with the air outlet of the paint mist collection component. Its drain port is connected with the recovery equipment. The air-water mixture in the water curtain generation component enters the air-water separation component. The air-water mixture is separated into waste gas and waste water during the flow in the air-water separation component. The waste gas enters the exhaust equipment through the air outlet, and the waste water enters the recovery equipment through the drain port.

[0009] Specifically, the paint mist collection component includes:

[0010] A supporting frame is equipped with a protective shell, and a paint mist containing space is formed in the protective shell. The protective shell is located below the paint spraying space, an air inlet is opened in the top side wall plate of the protective shell, and an air outlet is opened at the lower end of the front side wall plate of the protective shell, so that the paint mist flows from top to bottom in the protective shell.

[0011] Furthermore, the water curtain generating assembly includes:

[0012] A first water storage tank and a first guide plate. The first water storage tank is mounted on the upper end of the front side wall plate and is connected to a water supply device. The water supply device supplies water to the first water storage tank. The rear side of the first water storage tank is connected to the front side of the first guide plate. A first overflow edge is provided at the connection. The first overflow edge extends in a horizontal direction. When the water in the first water storage tank is full, the water overflows from the first overflow edge and flows to the top surface of the first guide plate. The rear side of the first guide plate has a first drainage edge. The first drainage edge is folded below the first guide plate. When the water on the top surface of the first guide plate flows down from the first drainage edge, a first water curtain is formed.

[0013] A second water storage tank and a second guide plate. The second water storage tank is located at the upper end of the rear side wall plate and is connected to the water supply device. The water supply device supplies water to the second water storage tank. The front side of the second water storage tank is connected to the rear side of the second guide plate. A second overflow edge is provided at the connection. The second overflow edge extends in a horizontal direction. After the water in the second water storage tank is full, it overflows from the second overflow edge and flows to the top surface of the second guide plate. The front side of the second guide plate has a second drainage edge. The second drainage edge is located below the first drainage edge and is folded below the second guide plate. A gap is left between the first drainage edge and the second drainage edge for water supply and paint mist to pass through. When the water on the top surface of the second guide plate flows down from the second drainage edge, a second water curtain is formed. The paint mist first passes through the first water curtain and then passes through the second water curtain to form a paint-water mixture and an air-water mixture;

[0014] A third guide plate, the top edge of which is joined to the bottom surface of the first guide plate, the bottom edge of which is located below the second guide plate, and a gap is left between the third guide plate and the second guide edge for the paint-water mixture and the air-water mixture to pass through, a Z-shaped channel is formed between the first guide plate, the second guide plate and the third guide plate, the recovery equipment is joined to the bottom side wall plate of the enclosure shell, and is located below the third guide plate, the paint-water mixture flows from the bottom edge of the third guide plate to the recovery equipment.

[0015] Further, the gas-water separation component comprises:

[0016] A first baffle plate, wherein the bottom edge of the first baffle plate is connected to the bottom side wall plate of the enclosure shell, and the top edge of the first baffle plate is connected to the bottom surface of the third guide plate, the top of the first baffle plate is provided with a first deflection port, and the bottom of the first baffle plate is provided with a first drainage port;

[0017] A second baffle plate, the bottom edge of which is connected to the bottom side wall plate of the enclosure shell, and the top edge of which is connected to the bottom surface of the first guide plate, a primary separation space is formed between the first baffle plate and the second baffle plate, a second deflection port and a second drain port are provided at the bottom of the second baffle plate, the gas-water mixture enters the primary separation space through the first deflection port, the water in the gas-water mixture is separated from the gas under the action of gravity, and flows from the first drain port to the recovery device;

[0018] A third baffle plate, the bottom edge of which is joined to the bottom side wall of the enclosure shell, and the top edge of which is joined to the bottom surface of the first guide plate, forming a secondary separation space between the second baffle plate and the third baffle plate, and forming a final separation space between the third baffle plate and the front side wall of the enclosure shell. After separation in the first separation space, the gas-water mixture enters the secondary separation space through the second deflection port, and the water therein is separated from the gas under the action of gravity, and flows from the second drain port and the first drain port to the recovery equipment. A third deflection port is provided on the top of the third baffle plate, and a third drain port is provided on the bottom of the third baffle plate. After separation in the second separation space, the gas-water mixture enters the third separation space through the third deflection port, and the water therein is separated from the gas under the action of gravity, and flows from the third drain port, the second drain port and the first drain port to the recovery equipment.

[0019] The advantages of the present invention are:

[0020] According to the Venturi effect, the water curtain system is equipped with multiple guide structures to form a Z-shaped channel for air flow to pass through, so that the paint mist and water are fully mixed, and multiple baffles are arranged to form multiple gas-water separation spaces. In the gas-water separation space, the gas-water mixture undergoes multiple deflections, so that the water in the gas is fully separated, which is convenient for subsequent discharge and treatment, and is beneficial to improving the paint mist treatment efficiency and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the structure of the water curtain system for capturing paint mist proposed by the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the water curtain system. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.

[0024] like Figure 1 , Figure 2 As shown, the water curtain system for capturing paint mist proposed by the present invention includes a paint mist collecting component, a water curtain generating component and an air-water separation component. The air inlet of the paint mist collecting component is connected to the paint spraying space, and the air outlet thereof is connected to the exhaust device, and the exhaust device brings the paint mist generated by the paint spraying operation in the paint spraying space into the paint mist collecting component; the water curtain generating component is assembled in the paint mist collecting component and is located at the air inlet of the paint mist collecting component, the inlet of the water curtain generating component is connected to the water supply device, and the outlet thereof is connected to the recovery device, and water is supplied to the water curtain generating component by the water supply device. A water curtain is generated in the process of water flowing in the water curtain generating component, and the paint mist in the paint spraying space enters the paint mist collecting component and is discharged from the water curtain The paint in the paint mist combines with water to form a paint-water mixture, and the air in the paint mist combines with water to form an air-water mixture, and the paint-water mixture enters the recovery equipment through the outlet of the water curtain generating component; the air-water separation component is assembled in the paint mist collecting component and is located at the air outlet of the paint mist collecting component, the inlet of the air-water separation component is connected with the outlet of the water curtain generating component, and its outlet is connected with the air outlet of the paint mist collecting component, and its drain is connected with the recovery equipment, the air-water mixture in the water curtain generating component enters the air-water separation component, and the air-water mixture is separated into waste gas and waste water during the flow in the air-water separation component, the waste gas enters the exhaust equipment through the air outlet, and the waste water enters the recovery equipment through the drain.

[0025] Specifically, the paint mist collecting component includes a supporting frame 1, in which a protective shell 2 is installed, and a paint mist containing space is formed in the protective shell. The protective shell is located below the paint spraying space, and an air inlet is opened in the top side wall plate of the protective shell, and an air outlet is opened at the lower end of the front side wall plate of the protective shell, so that the paint mist flows from top to bottom in the protective shell; the water curtain generating component includes a first water storage tank 3, a first guide plate 4, a second water storage tank 5, a second guide plate 6 and a third guide plate 7. The first water storage tank is installed at the upper end of the front side wall plate and is connected to the water supply equipment. The water supply equipment supplies water to the first water storage tank. The rear side edge of the first water storage tank is connected with the front side edge of the first guide plate. A first overflow edge 8 is provided at the joint. The first overflow edge extends in the horizontal direction. After the water in the second water storage tank is full, it overflows from the first overflow edge and flows to the top surface of the first guide plate. The rear side of the first guide plate has a first drainage edge 9, and the first drainage edge is folded toward the bottom of the first guide plate. When the water on the top surface of the first guide plate flows down from the first drainage edge, a first water curtain is formed; the second water storage tank is located at the upper end of the rear side wall plate and is connected to the water supply equipment, and water is supplied to the second water storage tank by the water supply equipment. The front side of the second water storage tank is connected with the rear side of the second guide plate, and a second overflow edge 10 is provided at the connection. The second overflow edge extends in the horizontal direction. After the water in the second water storage tank is full, it overflows from the second overflow edge and flows to the top surface of the second guide plate. The front side of the second guide plate has a second drainage edge 11, and the second drainage edge is located below the first drainage edge and flows toward the bottom of the second guide plate. The invention relates to a square fold, and a gap is left between the first guide edge and the second guide edge for water and paint mist to pass through. When the water on the top surface of the second guide plate flows down from the second guide edge, a second water curtain is formed. The paint mist first passes through the first water curtain and then passes through the second water curtain to form a paint-water mixture and an air-water mixture. The top edge of the third guide plate is connected to the bottom surface of the first guide plate, and its bottom edge is located below the second guide plate, and a gap is left between the third guide edge and the second guide edge for the paint-water mixture and the air-water mixture to pass through. A Z-shaped channel is formed between the first guide plate, the second guide plate and the third guide plate. The recovery device is connected to the bottom side wall plate of the enclosure shell and is located below the third guide plate. The paint-water mixture flows from the bottom edge of the third guide plate to the recovery device. The air-water separation component includes a first baffle plate 1 2. A second baffle plate 13 and a third baffle plate 14. The bottom edge of the first baffle plate is connected to the bottom side wall plate of the enclosure shell, and the top edge thereof is connected to the bottom surface of the third guide plate. A first deflection port 15 is provided on the top of the first baffle plate, and a first drain port 16 is provided on the bottom thereof. The bottom edge of the second baffle plate is connected to the bottom side wall plate of the enclosure shell, and the top edge thereof is connected to the bottom surface of the first guide plate. A primary separation space is formed between the first baffle plate and the second baffle plate. A second deflection port 17 and a second drain port are provided on the bottom of the second baffle plate. In this embodiment, the second drain port is combined with the second deflection port, and the gas-water mixture enters the primary separation space through the first deflection port. The water in the gas-water mixture is separated from the gas under the action of gravity and flows from the first drain port to the recovery device.The bottom edge of the third baffle is connected to the bottom side wall of the enclosure shell, and the top edge is connected to the bottom surface of the first guide plate, forming a secondary separation space between the second baffle and the third baffle, and a final separation space is formed between the third baffle and the front side wall of the enclosure shell. After separation in the first separation space, the gas-water mixture enters the secondary separation space through the second deflection port, and the water therein is separated from the gas under the action of gravity, and flows to the recovery equipment from the second drain port and the first drain port. A third deflection port 18 is provided on the top of the third baffle, and a third drain port 19 is provided on the bottom. After separation in the second separation space, the gas-water mixture enters the third separation space through the third deflection port, and the water therein is separated from the gas under the action of gravity, and flows to the recovery equipment from the third drain port, the second drain port and the first drain port. The water curtain system is equipped with multiple flow guide structures to form a Z-shaped channel for air flow to pass through, so that the paint mist and water are fully mixed, and multiple baffles are set to form multiple gas-water separation spaces. In the gas-water separation space, the gas-water mixture undergoes multiple deflections, so that the water in the gas is fully separated, which is convenient for subsequent discharge and treatment, and is conducive to improving the paint mist treatment efficiency and improving production efficiency. ;

[0026] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable technicians in this field to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A water curtain system for capturing paint mist, characterized in that: include: A paint mist collection component, the air inlet of which is connected to the paint spraying space, and the air outlet of which is connected to the exhaust device, so that the paint mist generated by the paint spraying operation in the paint spraying space is brought into the paint mist collection component by the exhaust device; A water curtain generating component, which is assembled in the paint mist receiving component and is located at the air inlet of the paint mist receiving component. The inlet of the water curtain generating component is connected to the water supply device, and the outlet thereof is connected to the recovery device. The water supply device supplies water to the water curtain generating component. The water generates a water curtain during the flow of water in the water curtain generating component. The paint mist in the spray painting space enters the paint mist receiving component and passes through the water curtain. The paint in the paint mist combines with water to form a paint-water mixture. The air in the paint mist combines with water to form an air-water mixture. The paint-water mixture enters the recovery device through the outlet of the water curtain generating component. An air-water separation component is installed in the paint mist collection component and is located at the air outlet of the paint mist collection component. The inlet of the air-water separation component is connected to the outlet of the water curtain generation component, and its outlet is connected to the air outlet of the paint mist collection component. Its drain port is connected to the recovery device. The air-water mixture in the water curtain generation component enters the air-water separation component. The air-water mixture is separated into waste gas and waste water during the flow in the air-water separation component. The waste gas enters the exhaust device through the air outlet, and the waste water enters the recovery device through the drain port. The paint mist collection components include: A support frame, wherein an enclosure shell is assembled in the support frame, a paint mist receiving space is formed in the enclosure shell, the enclosure shell is located below the paint spraying space, an air inlet is opened in the top side wall plate of the enclosure shell, and an air outlet is opened at the lower end of the front side wall plate of the enclosure shell, so that the paint mist flows from top to bottom in the enclosure shell; The water curtain hair growth components include: A first water storage tank and a first guide plate. The first water storage tank is mounted on the upper end of the front side wall plate and is connected to a water supply device. The water supply device supplies water to the first water storage tank. The rear side of the first water storage tank is connected to the front side of the first guide plate. A first overflow edge is provided at the connection. The first overflow edge extends in a horizontal direction. When the water in the first water storage tank is full, the water overflows from the first overflow edge and flows to the top surface of the first guide plate. The rear side of the first guide plate has a first drainage edge. The first drainage edge is folded below the first guide plate. When the water on the top surface of the first guide plate flows down from the first drainage edge, a first water curtain is formed. A second water storage tank and a second guide plate. The second water storage tank is located at the upper end of the rear side wall plate and is connected to the water supply device. The water supply device supplies water to the second water storage tank. The front side of the second water storage tank is connected to the rear side of the second guide plate. A second overflow edge is provided at the connection. The second overflow edge extends in a horizontal direction. After the water in the second water storage tank is full, it overflows from the second overflow edge and flows to the top surface of the second guide plate. The front side of the second guide plate has a second drainage edge. The second drainage edge is located below the first drainage edge and is folded below the second guide plate. A gap is left between the first drainage edge and the second drainage edge for water supply and paint mist to pass through. When the water on the top surface of the second guide plate flows down from the second drainage edge, a second water curtain is formed. The paint mist first passes through the first water curtain and then passes through the second water curtain to form a paint-water mixture and an air-water mixture; A third guide plate, the top edge of which is connected to the bottom surface of the first guide plate, the bottom edge of which is located below the second guide plate, and a gap is left between the third guide plate and the second guide edge for the paint-water mixture and the air-water mixture to pass through. The recovery device is connected to the bottom side wall plate of the enclosure shell and is located below the third guide plate, and the paint-water mixture flows from the bottom edge of the third guide plate to the recovery device; The gas-water separation components include: A first baffle plate, wherein the bottom edge of the first baffle plate is connected to the bottom side wall plate of the enclosure shell, and the top edge of the first baffle plate is connected to the bottom surface of the third guide plate, the top of the first baffle plate is provided with a first deflection port, and the bottom of the first baffle plate is provided with a first drainage port; A second baffle plate, the bottom edge of which is connected to the bottom side wall plate of the enclosure shell, and the top edge of which is connected to the bottom surface of the first guide plate, a primary separation space is formed between the first baffle plate and the second baffle plate, a second deflection port and a second drain port are provided at the bottom of the second baffle plate, the gas-water mixture enters the primary separation space through the first deflection port, the water in the gas-water mixture is separated from the gas under the action of gravity, and flows from the first drain port to the recovery device; A third baffle plate, the bottom edge of which is joined to the bottom side wall of the enclosure shell, and the top edge of which is joined to the bottom surface of the first guide plate, forming a secondary separation space between the second baffle plate and the third baffle plate, and forming a final separation space between the third baffle plate and the front side wall of the enclosure shell. After separation in the first separation space, the gas-water mixture enters the secondary separation space through the second deflection port, and the water therein is separated from the gas under the action of gravity, and flows from the second drain port and the first drain port to the recovery equipment. A third deflection port is provided on the top of the third baffle plate, and a third drain port is provided on the bottom of the third baffle plate. After separation in the second separation space, the gas-water mixture enters the third separation space through the third deflection port, and the water therein is separated from the gas under the action of gravity, and flows from the third drain port, the second drain port and the first drain port to the recovery equipment.

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