CN201257420Y - Spraying cabinet with rotational flow board purifier - Google Patents

Abstract

A spraying cabinet with a swirl plate purifier, involving industrial equipment and purification technology in the field of environmental protection, consisting of a spraying work area and a paint mist purification room, wherein the paint mist purification room is equipped with a swirl plate purifier, a swirl plate The lower part of the air inlet channel of the purifier is connected with the spraying work area, the upper part of the air outlet channel is connected with the exhaust system, the lower part is the circulating liquid tank and the circulating pump for receiving the washing liquid, and the cleaning spray port is installed above the internal rotation mass transfer swirl plate purifier , A vertical separation baffle is installed between the two cabinet-type external rotation separation cyclone plate purifiers. The utility model has high purification efficiency, large processing capacity, low pressure drop, can directly separate and recycle materials, can transform existing spraying cabinets, and is suitable for purification of paint spraying, varnish spraying, and powder spraying, and is also suitable for air purification of workshops.

Description

Spray cabinet with swirl plate purifier

Technical field

The utility model relates to purification technology in the field of industrial equipment and environmental protection, in particular to a spraying cabinet with a swirl plate purifier.

Background technique

Known spraying includes spray paint, spray varnish, powder spraying etc., always have a part of raw material not to spray on the workpiece in the spraying process, and this part is called " overspray paint mist ". Overspray paint mist is generally composed of solvents and film-forming substances. Dust formed after the film-forming substances in overspray paint mist dries will affect the spraying quality. Therefore, spraying cabinets are used in industry to remove overspray paint mist.

Known spray booths are divided into dry type and wet type. The dry spray booth directly uses filter materials or devices to collect and process the paint mist. The air volume is small and the wind pressure is low, which does not produce secondary pollution. However, the paint mist collection efficiency is low, the equipment itself is seriously polluted, and it is prone to fire. The wet spray booth uses water, oil, oil-water dispersion or emulsion as an absorbent to collect paint mist, and then treats the waste liquid containing paint, so that the waste paint forms paint residue and remains in the water or oil phase for separation. Absorbents from spent paint are reused to collect paint mist. Water is most often used as an absorbent to form the circulating water in the spray booth, and the paint-containing waste liquid (water) needs to be specially treated, which is prone to secondary pollution. Water curtain cabinet is the most commonly used equipment for wet treatment of paint mist.

The water curtain spraying cabinet is the earliest and most widely used. It is divided into a semi-open working area at the front and a closed exhaust area at the rear by a partition with a flowing water film. Various recent improvements include dividing the water curtain plate into multiple sections to make the water curtain uniform, such as Chinese patent CN88105395, and also setting baffles in the rear exhaust area to increase the chance of gas-liquid collision, such as Chinese patent ZL200420105892.3, and Corrugated fillers are arranged in the rear exhaust area, such as Chinese patent ZL200620059853.3. Whether it is the early long water curtain, multi-stage water curtain or some improvements, they have not solved the problem of mass transfer and separation between the fine paint mist and the absorption liquid. The absorption effect is not ideal, and even the splash of water droplets affects the use. On the other hand, in some occasions that can be recycled, the use of water curtain cabinets for absorption will cause material waste and environmental pollution.

The known swirl plate is composed of a liquid distribution blind plate, a swirl blade, a cover tube, a sump, and an overflow pipe (cone). When the air flow passes through the blades, the rotating motion is generated, and the liquid is distributed to each blade by the blind plate to form a thin liquid layer, which is sprayed into fine droplets by the air flow blown out between the blades, and is thrown to the cylinder wall by centrifugal force in the rotating air flow to form a rotating liquid ring, and It flows to the liquid collection tank under the action of gravity, and then flows to the blind plate of the lower swirl plate through the overflow pipe (cone). Due to the large opening rate, the processing capacity is large, the pressure is low, and it is not easy to block. There are two kinds of swirl plates: inner swirl mass transfer mixing type and outer swirl centrifugal separation type.

Contents of the invention

In order to overcome the disadvantages of poor mass transfer and poor separation effect in the existing spraying cabinets, the utility model provides a spraying cabinet with a swirl plate purifier by referring to the swirl plate technology, so that the paint mist can be effectively purified or recovered.

The technical scheme that the utility model solves its technical problem to take is:

A spraying cabinet with a swirl plate purifier, including a closed purification cabinet with several swirl plates, a semi-open spraying work area, an exhaust system and a spraying system at the front, it is characterized in that the spraying purification Cabinet: a. The lower part is connected to the air inlet of the spraying work area, b. The upper part is connected to the exhaust port of the exhaust system, c. The lower part is connected to the circulating liquid tank and the circulating pump of the washing liquid, d. Above the internal rotation mass transfer mixing plate There is a washing liquid spray port, e. One side of the spraying cabinet is an openable movable door panel for easy maintenance and cleaning.

The above-mentioned spraying cabinet with a swirl plate purifier is characterized in that the swirl plate purifier is composed of a liquid distribution blind plate, a swirl vane, a cover tube, a liquid collection tank, a separation baffle, and an overflow pipe (cone) .

The above-mentioned spraying cabinet with a swirl plate purifier is also characterized in that the swirl plate purifier has an internal swirl mass transfer mixing plate for gas-water mixed washing and an external swirl centrifugal separation plate for gas-liquid separation material recovery two boards;

The above-mentioned spraying cabinet with a swirl plate purifier is also characterized in that the swirl plate purifier has three shapes: cabinet type, drawer type and steamer type.

The above-mentioned spraying cabinet with a swirl plate purifier is also characterized in that the above-mentioned drawer type and steamer type swirl plate purifiers are made into a "combined cabinet type", and several combined cabinet purifiers, circulating water tanks and exhaust systems Stacked together to form a spray cabinet.

The above-mentioned spraying cabinet with a swirl plate purifier is also characterized in that multiple sets of swirl plate purifiers of different forms can be installed in the spraying cabinet.

The beneficial effects of the utility model are:

1. The spraying cabinet with the swirl plate purifier of the utility model has high purification efficiency. The oversprayed paint mist enters the purification area from the lower part of the spraying cabinet with the airflow, passes through the swirl plate, and the airflow generates a rotating motion when passing through the swirl blades, and the washing liquid on the blades is blown into fine droplets on the inward mass transfer mixing plate, and then The air flow is guided to the top of the swirl plate to collide with each other for mass transfer, and finally the outward centrifugal separation plate guides the air flow to the outer wall to form a rotating liquid ring. The liquid droplets are thrown to the wall of the cylinder by centrifugal force in the rotating air flow, and flow to the liquid collection tank under the action of gravity. Realize gas-liquid separation.

2. The spraying cabinet with the swirl plate purifier of the utility model has large processing capacity, uniform air extraction, low pressure drop, and is not easy to be blocked.

3. The spraying cabinet with swirl plate purifier of this utility model can directly separate and recycle materials, reduce consumption, save cost, and eliminate the resulting environmental pollution.

4. The spraying cabinet with the swirl plate purifier of the utility model can be used to make a new spraying cabinet, or to modify the existing spraying cabinet, and install a swirl in the air duct behind the water curtain plate according to the utility model A plate purifier can achieve the same purification effect.

5. The spraying cabinet with the swirl plate purifier of the utility model has a wide range of applications. It is not only suitable for paint mist washing of spraying cabinets, PU paint powder washing in furniture factories, powder washing of powder spraying, but also suitable for paint and paint in hardware factories. The recovery of varnish in leather goods factories is also suitable for air purification in workshops.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a side sectional view of a spray cabinet with a swirl plate purifier;

Fig. 2 is a schematic diagram of a cabinet-type swirl plate purifier; Fig. 3 is a schematic diagram of a spraying cabinet with a cabinet-type swirl plate purifier;

Fig. 4 is a schematic diagram of a drawer-type swirl plate purifier; Fig. 5 is a schematic diagram of a spraying cabinet with a drawer-type swirl plate purifier;

Fig. 6 is a schematic diagram of a steamer type swirl plate purifier; Fig. 7 is a schematic diagram of a spraying cabinet with a steamer type swirl plate purifier;

In the figure: 1. Circulating liquid tank, 2. Air inlet channel, 3. Swirl plate purifier, 4. Spraying work area, 5. Washing spray port, 6. Separation baffle, 7. Air outlet channel, 8. Spray the cabinet.

Detailed ways

The essence of the spraying cabinet with the swirl plate purifier of the utility model is to modify the rear channel of the existing water curtain cabinet and add the swirl plate purifier. The preferred method is to install a cabinet-type swirl plate purifier at the channel level of the spraying cabinet, which is mainly used for washing and separation. Another preferred method is to vertically install a steamer-type swirl plate purifier in the channel of the spraying cabinet, which is suitable for washing separation and recovery separation. Another preferred method is to insert a drawer-type swirl plate purifier in the channel of the spraying cabinet, which is mainly used for recovery and separation.

As shown in Figure 1, a spraying cabinet with a swirl plate purifier is composed of a spraying work area (4) and a paint mist purification room, wherein a swirl plate purifier (3) is installed in the paint mist purification room, and the swirl plate purifier The air inlet channel (2) in the lower part of the flow plate purifier (3) communicates with the spraying work area (4), the upper air outlet channel (7) is connected with the exhaust system, and the lower part is the circulating liquid tank (1) and the circulating pump for receiving the washing liquid , a washing spray port (5) is installed above the internal swirl mass transfer swirl plate purifier (3), and a vertical separation baffle (6) is installed between the two cabinet-type external swirl separation swirl plate purifiers (3) ), one side of the spraying cabinet body (8) is an openable movable door panel for convenient maintenance and cleaning.

As shown in Figure 1, workers or robotic hands carry out spraying operations in the spraying work area (4) in front of the spraying cabinet, and the oversprayed paint mist enters the swirl plate purifier (3) from the lower air inlet channel (2) with the airflow, and the airflow passes through When the swirl plate purifier (3) blows off the washing liquid on the blades, it is sprayed into fine droplets, and the airflow guided by the swirl plate collides with the mass transfer violently above the swirl plate. The circulation pump draws the washing liquid from the circulating liquid tank (1) to the washing spray port (5) above the mass transfer swirl plate, distributes the liquid through the blind plate of the swirl plate to the washing air flow of the swirl blade, and finally guides it through the top outward separation plate Spray on the inner wall of the cabinet body (8) and the separation baffle (6), and finally flow back to the circulating fluid tank (1), and the clean air flow is discharged from the upper air outlet channel (7) under the suction of the exhaust fan.

As shown in Figure 2, a kind of cabinet type swirl plate purifier (3) is that one or a plurality of circular swirl plate purifiers (3) are arranged on a square plate similar to the cabinet plate, and it can be conveniently horizontal Fastened to the frame of the spray booth to isolate the air flow.

As shown in FIG. 3 , a spraying cabinet with a cabinet-type swirl plate purifier, several of the above-mentioned cabinet-type swirl plate purifiers (3) are horizontally installed in the cabinet.

As shown in Figure 4, a drawer-type swirl plate purifier (3) is a square drawer-like assembly, and a circular swirl plate purifier (3) is arranged on its flat plate, which can be easily inserted into the spraying The frame reserved for the cabinet separates the air flow.

As shown in Fig. 5, a spraying cabinet with a drawer-type swirl plate purifier has several drawer-type swirl plate purifiers (3) horizontally inserted in the cabinet.

As shown in Figure 6, a steamer-type swirl plate purifier (3) is a circular assembly similar to a steamer, and a flat plate similar to a steamer grate is a circular swirl plate purifier (3). Several steamer swirl plate purifiers can be connected end to end to form a unit, and the air inlet and outlet are connected by this steamer swirl plate purifier unit.

As shown in Figure 7, a kind of spray cabinet with steamer type swirl plate purifier, several above-mentioned steamer type swirl plate purifiers (3) are vertically installed in the cabinet, by steamer type swirl plate purifier (3) ) separates the air inlet and air outlet.

According to the technical advantages of the utility model, the existing spraying cabinet can be modified according to the above-mentioned embodiment, and a swirl plate purifier can be installed in the air duct behind the water curtain plate to achieve the same purification effect.

According to the technical advantages of the utility model, the spraying cabinet can be used for grinding and polishing waste gas and air purification of workshops.

Claims (7)

1. A spraying cabinet with a swirl plate purifier, consisting of a spraying work area (4) and a paint mist purification room, wherein a swirl plate purifier (3) is installed in the paint mist purification room, and the swirl plate purifier (3) The lower air inlet channel (2) communicates with the spraying work area (4), the upper air outlet channel (7) is connected with the exhaust system, and the lower part is the circulating liquid tank (1) and the circulating pump for receiving the washing liquid. A washing spray port (5) is installed above the mass swirl plate purifier (3), and a vertical separation baffle (6) is installed between the two cabinet-type external swirl separation swirl plate purifiers (3). One side of the body (8) is an openable movable door panel for convenient maintenance and cleaning. 2. The spraying cabinet with the swirl plate purifier according to claim 1, characterized in that, the swirl plate purifier (3) has three shapes: cabinet type, drawer type and steamer type. 3. The spraying cabinet with the swirl plate purifier according to claim 2 is characterized in that, the cabinet type swirl plate purifier (3) is a square plate assembly similar to the cabinet plate, and there are One or an array of multiple circular swirl plate purifiers. 4. The spraying cabinet with the swirl plate purifier according to claim 2 is characterized in that the drawer type swirl plate purifier (3) is a square drawer-like assembly, and there are A circular swirl plate purifier. 5. The spraying cabinet with the swirl plate purifier according to claim 2 is characterized in that, the steamer type swirl plate purifier (3) is a circular assembly similar to a steamer, and its similar steamer The flat plate of the grate is a circular swirl plate purifier. 6. The spraying cabinet with the swirl plate purifier according to claim 2, further characterized in that multiple groups of multiple different forms of swirl plate purifiers can be installed in the spraying cabinet with the swirl plate purifier device. 7. according to claim 2 or 4 described spraying cabinet with swirl plate purifier, it is characterized in that, described spraying cabinet with swirl plate purifier, drawer type and steamer type swirl plate purifier do Into a combined cabinet type, several combined cabinet purifiers, circulating water tanks and exhaust systems are stacked together to form a spraying cabinet with a swirl plate purifier.

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