CN201921611U - Rotating wheel paint mist purifying device - Google Patents

Abstract

A rotary wheel paint mist purification device, the upper part of the rotary wheel (1) driven by an electric mechanism forms a filter area (16) with an exhaust mechanism, and forms a cleaning area (8) with a cleaning mechanism downstream along the direction of rotation, and with a The drying mechanism forms a drying area (7); the runner (1) includes a casing on the outer periphery, a shaft sleeve for installing a central shaft, and a medium layer installed between the casing and the shaft sleeve. The utility model has the advantages of novel structure, good purification effect and low operation cost, and the medium layer of the filter part can be cleaned and regenerated and used continuously.

Description

A wheel paint mist purification device

technical field

The utility model relates to a purification device, in particular to a rotary paint mist purification device which is used in paint mist purification in the coating industry, can be used continuously, has good filtering effect and low operating cost.

Background technique

The spray painting process is widely used in the surface anticorrosion and decoration of materials such as metal, plastic and wood. Spraying is generally carried out in the spray booth. During the painting process, most of the paint forms a paint film on the surface of the workpiece, while the other part of the paint diffuses in the spray booth with the ambient air flow in the form of paint mist to form pollution. In order to meet the requirements of the air cleanliness in the spray booth and the working environment of the operators, an exhaust system is installed in the spray booth to discharge the polluted air. The discharged polluted air must be purified before being discharged into the atmosphere. It is mainly paint mist pollution and organic solvent pollution formed by the phase change of diluent into gas during the spraying process. At present, the method of purifying paint mist pollution is mainly water washing method, that is, let the air containing paint mist pass through the water curtain cabinet and water washing cabinet to capture paint mist. When the paint particles and atomized water droplets or the water formed on the baffle After the film is in contact, it will be captured by water droplets or water film and brought into the pool, and paint residue will be formed in the water to be salvaged. This method of dealing with paint mist is widely used in the painting industry, but it also has some disadvantages. One is that it occupies a large area; The water pipes and water nozzles are blocked, which requires manual cleaning. The workload is large, and there is water mist during the operation of the device, which will corrode all equipment, shorten the service life of the equipment, and increase the maintenance cost of the equipment; thirdly, according to the requirements of environmental protection regulations, discharge The sewage also needs to be purified, and this part of the operating cost is also quite large; Fourth, when the water temperature is higher than the air temperature, the washing process is actually a process of humidifying the air, and in the treatment of spray paint exhaust gas, the treatment of organic solvents is common. With the method of activated carbon, the increase of air humidity will greatly reduce the adsorption effect of activated carbon or even completely invalidate it, which brings difficulties to the treatment of organic solvents. Another method to deal with paint mist is a dry purification device, which allows the air containing paint mist to pass through a dry filter, and separates the paint mist from the airflow by changing the direction of inertial force and impact rate of the paint mist particles. At present, paint mist filter cotton is mainly used. This filter cotton has a variable filter density, and the pore size gradually decreases along the airflow direction to enhance the content of paint mist absorbed by the filter cotton, so that the filter cotton will not be blocked quickly. This kind of paint mist filter cotton has a high filtration efficiency and avoids the problems caused by the water washing method. However, the filter cotton cannot be regenerated after absorbing the paint mist and can only be replaced. In the case of serious paint mist pollution or large air volume Under the circumstances, the paint mist filter cotton is used in a large amount, the operating cost is astonishing, and it cannot meet the requirements of continuous operation of the system.

Contents of the invention

The purpose of the utility model is to aim at the deficiencies of the prior art, and provide a rotary paint mist purification device with novel structure, good purification effect, low operating cost, cleaning and regeneration of the filter device and continuous use.

The utility model provides a paint mist purification device with a rotary wheel. The upper part of the rotary wheel driven by an electric mechanism forms a filter area with a ventilation mechanism, and forms a cleaning area with a cleaning mechanism downstream along the rotation direction, and a drying mechanism with a drying mechanism. area; the runner includes a casing on the outer periphery, a shaft sleeve for installing the central shaft, and a medium layer installed between the casing and the shaft sleeve.

The medium layer forms a layered shape according to the direction of the air to be filtered. Each layer is arranged with a certain gap by a wave-shaped metal plate 22 or plastic plate, and along the direction of the air, the metal plates or plastic plates are formed layer by layer from sparse to dense. air circulation channels.

The ventilation mechanism includes a main air duct, the filter area is located in the main air duct, one side of the main air duct has a polluted air inlet, and the other side is provided with an exhaust fan. The cleaning mechanism includes a liquid spray nozzle arranged on the same side as the exhaust fan, and the liquid spray nozzle is connected to the liquid pump through the liquid spray pipe. The drying mechanism includes a circulating air duct, the drying area is located in the circulating air duct, and a fan is arranged on the same side as the polluted air inlet.

The projections of the formed filtration area, cleaning area and drying area on both sides of the runner are fan-shaped, wherein the cleaning area and drying area account for 1/4 and 1/8 of the area of the runner respectively, and the rest is the filtering area.

Compared with the prior art, the utility model has the following advantages:

1. The utility model has the advantages of reasonable structure, small footprint, and simple operation and maintenance.

2. The structural design of the continuous operation of the runner enables the purification process to be carried out continuously, avoiding the impact of replacing the filter material with filter cotton on the purification process, and the design of the filter material can be cleaned and regenerated greatly reduces consumables and operating costs.

3. According to different painting processes, filter screens with different pore sizes can be used in series and configured with different cleaning fluids, which has wide adaptability.

4. The utility model belongs to a dry purification device, which does not affect the adsorption capacity of activated carbon to organic solvent pollution, and the temperature and humidity of the treated air do not change. It can be used in conjunction with other air heat recovery devices to effectively reduce air conditioning energy consumption.

Description of drawings

Fig. 1 is a working principle diagram of the present utility model.

Fig. 2 is the sectional schematic diagram of the filtration zone, the cleaning zone and the drying zone formed by the runner in the utility model;

Fig. 3 is the exploded schematic diagram of the runner of the present utility model;

Figure 4 is an enlarged view of one of the media layers in the wheel.

Detailed ways

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of wheel paint mist purifying device provided by the utility model, the upper part of the wheel 1 driven by the electric mechanism forms a filter area 16 with an exhaust mechanism, and the downstream along the direction of rotation The cleaning area 8 is formed with a cleaning mechanism and the drying area 7 is formed with a drying mechanism in turn; the runner 1 includes a casing 19 on the outer periphery, a shaft sleeve 20 on which the central shaft is installed, and a medium layer installed between the casing 19 and the shaft sleeve 20 2. The medium layer 2 forms a layered shape according to the direction of the air to be filtered. Each layer is arranged with a certain gap by wavy metal plates 22 or plastic plates to form a mesh structure, and the metal plates 22 or 22 are layered along the air direction. The plastic plate forms the air circulation channel from sparse to dense. The above-mentioned metal plate 22 is fixed on a shelf, which includes an outer cover 21, an inner cover 24 and a fixed rod 25. Be enclosed within on axle sleeve 20 outer circumferences. The metal plate 22 or plastic plate has a certain width to ensure that the passing air has a certain residence time. The width of the formed air circulation channel can be determined according to actual needs. The metal plate 22 or plastic plate has the effect of filtering paint mist. Since the air circulation channel of the metal plate 22 or plastic plate along the air moves towards each layer from sparse to dense, the filter density between the layers is different, and a certain gradient is maintained, showing a trend from weak to strong, which improves the filter density. Effect.

Both sides of the medium layer 2 are provided with fence-shaped protective frames 23 , which have the function of fixing the medium layer 2 .

The exhaust mechanism includes a main air duct 15, and the filter area 16 is located in the main air duct 15. There is a polluted air inlet 3 on one side of the main air duct 15, and an exhaust fan 14 is arranged on the other side. The cleaning mechanism includes a liquid spray nozzle 13 arranged on the same side as the exhaust fan 14. The liquid spray nozzle 13 is connected to the liquid pump 9 through the liquid spray pipe 11, and the liquid pump 9 is connected to the liquid pool 6 through the pipeline. The liquid pool 6 has a liquid supply pipe 18 and Drain pipe 17. A baffle 4 is arranged on the outer side of the liquid spray nozzle 13 and the other side of the runner 1 corresponding to the cleaning area. The drying mechanism includes a circulating air duct 10, and the drying area is located in the circulating air duct 10. A fan 5 is arranged on the same side of the circulating air duct 10 and the polluted air inlet 3, and a liquid baffle 12 is arranged on the other side.

The projections of the formed filter area 16, cleaning area 8 and drying area 7 on both sides of the runner 1 are fan-shaped, wherein the cleaning area 8 and the drying area 7 account for 1/4 and 1/8 of the area of the runner 1 respectively, The rest are filter areas 16, see FIG. 2 .

When in use, it can be seen from Figure 1 that the three parts of the filter, cleaning and drying of the runner 1 are carried out at the same time. Driven by the motor, the runner 1 rotates at a fixed speed, and the treatment air that needs to remove paint mist passes through the polluted air inlet 3 Enter the filter area 16 through the main air duct 16, and the air filtered by the medium layer 2 is discharged from the air outlet under the action of the exhaust fan 14, and the runner 1 with paint mist is transferred into the cleaning area 8, and the liquid spray nozzle 13 is in the cleaning area. Under the action of the liquid pump 9, the cleaning liquid in the liquid pool 6 is sprayed to the cleaning area 8 of the runner 1 at a high speed. According to the different types of paint mist, the cleaning agent that can dissolve the paint mist is stored in the liquid pool 6. Under chemical action, the paint mist attached to the medium layer 2 is separated from the air flow, the liquid hits the baffle 4 and then falls, and enters the liquid pool 6 under the action of gravity. After passing through the cleaning area 8, the paint mist attached to the runner 1 is removed, but there is still a small amount of cleaning fluid attached to the runner. At this time, the runner 1 is transferred to the drying zone 7, and the fan 5 blows the wind against the direction of spraying the liquid through the runner 1. The cleaning liquid on 1 is blown off, and enters the circulating air duct 10 together with the air flow, and the liquid baffle plate 12 arranged in the circulating air duct 10 separates the cleaning liquid of small particles from the air flow, flows into the liquid pool 6 at the lower part, and then With the gradual progress of the treatment process, the concentration of the cleaning solution in the liquid pool 6 gradually decreases, and the discharge pipe 17 can be opened to discharge part of the low-concentration cleaning solution and the liquid supply pipe 18 can be opened to supplement part of the high-concentration cleaning solution to ensure cleaning. Effect. After cleaning and drying, the rotor turns back into the filter area to start the next round of filtration, realizing continuous paint mist purification process.

The utility model is not limited to the above-mentioned embodiment, anyone can obtain other forms of products under the enlightenment of the utility model, such as changing the partition mode and the partition area, not setting a drying area or adding other areas, spraying The liquid direction is not opposite to the air flow direction but consistent with the air flow direction, the fan placement position is different, etc., but regardless of any changes in its shape or structure, all deformations within the scope of the technical ideas of the utility model should be regarded as It is included in the technical scope of protection required by the utility model.

Claims (9)

1. A runner paint mist purification device, characterized in that the upper part of the runner (1) driven by an electric mechanism forms a filter area (16) with an exhaust mechanism, and forms a cleaning zone with a cleaning mechanism downstream along the direction of rotation (8), forming a drying zone (7) with a drying mechanism; the runner (1) includes a casing (19) on the outer periphery, a shaft sleeve (20) for installing a central shaft, and a medium layer installed between the casing and the shaft sleeve (2). 2. A kind of wheel paint mist purifying device according to claim 1, characterized in that, the medium layer (2) forms a stacked shape according to the direction of the air to be filtered, and each layer is made of a corrugated metal plate (22) or plastic plates, and layer-by-layer metal plates (22) or plastic plates along the air direction form air circulation channels from sparse to dense. 3. A paint mist purifying device for a wheel according to claim 2, characterized in that fence-shaped protective frames (23) are provided on both sides of the medium layer (2). 4. A kind of wheel paint mist purifying device according to claim 1, characterized in that, the exhaust mechanism comprises a main air duct (15), and the filter area (16) is located in the main air duct (15), and the main air duct (15) There is polluted air inlet (3) on one side, and exhaust fan (14) is arranged on the other side. 5. A kind of wheel paint mist purification device according to claim 1, characterized in that, the cleaning mechanism includes a liquid spray nozzle (13) arranged on the same side as the exhaust fan, and the liquid spray nozzle (13) passes through the liquid spray pipe (11) liquid contact pump (9). 6. A kind of wheel paint mist purification device according to claim 1, characterized in that, the drying mechanism comprises a circulating air duct (10), the drying area (7) is in the circulating air duct (10), and the circulating air A fan (5) is arranged on the same side of the road (10) as the polluted air inlet (3). 7. A paint mist purification device for a rotary wheel according to claim 5, characterized in that a baffle (4) is provided on the outer side of the liquid spray nozzle (13) and on the other side of the rotary wheel (1) corresponding to the cleaning area. 8. A paint mist purification device for a rotary wheel according to claim 6, characterized in that there is a liquid baffle (12) on the other side of the circulating air duct (10) opposite to the fan (5). 9. A kind of wheel paint mist purification device according to claim 1, characterized in that, the filter area (16), the cleaning area (8) and the drying area (7) are formed on both sides of the wheel (1) The projections are all fan-shaped, wherein the cleaning area (8) and the drying area (7) account for 1/4 and 1/8 of the area of the runner (1) respectively, and the rest are filter areas (16). the

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