RU18298U1 - LOCAL VENTILATION DEVICE WITH GAS CLEANING - Google Patents

Abstract

1. A local ventilation device with gas cleaning, containing a hydraulic filter, a fan and an irrigated polluted air extraction unit and a water tank with a pump mounted on a trolley, characterized in that an adsorber and a container for collecting contaminants are introduced into the device, the hydraulic filter is made in the form of a vortex gas-liquid reactor, the fan is made by the supply and exhaust, the block of selection of polluted air consists of two vortex devices of local suction installed with the possibility of movement at the ends vertically about the supply and exhaust duct, the supply duct of which is connected to the fan, the exhaust duct is with the first inlet of the hydraulic filter, the second inlet of which is connected to the pump, and the first, second and third outlets are connected respectively to the pollution collection container, water tank and adsorber, upper part of the exhaust duct of the supply and exhaust duct is connected to the pump, and the lower part is connected to the water tank, an adsorber, a hydraulic filter, a fan and a container for collecting dirt are fixed on the trolley. 2. The local ventilation device with gas purification according to claim 1, characterized in that the supply and exhaust duct of the polluted air extraction unit contains two coaxial rigid ducts, of which the internal is exhaust and the external is supply, the ends of the internal duct are made of movably connected pipes, the ends of the external Ducts are flexible. 3. The local ventilation device with gas cleaning according to claim 1, characterized in that the adsorber contains removable cartridges with carbon fiber adsorbent. The local ventilation device with gas cleaning according to claim 1, characterized

Description

The utility model relates to equipment for applying paints and varnishes, in particular, to filter-ventilation units designed to maintain normalized parameters of the air at non-fixed workplaces, and can be used for painting large products by spraying methods.

A device for local ventilation with gas cleaning, containing a block for the selection of contaminated air, a hydraulic filter, supply and exhaust fans, a cart and a water tank (see USSR author's certificate No. 975111 of 07.29.81, MKI V05C 15/00). The hydraulic filter is connected to an exhaust fan. The polluted air sampling unit contains exhaust ducts located in the lower part of the spray booth, which are connected through the supply fan to the supply ducts containing filters located in the upper part of the spray booth. Supply & e

boxes move synchronously with the cart and the work platform in the vertical direction.

A disadvantage of the known device is due to the fact that first the contaminated air passes through the part of the chamber in which the working platform is located, and only then it passes through the air exhaust channels to the filters, which does not allow removing contaminants near the source of their emission. In addition, the degree of purification of polluted air provided by the known device is not high enough.

The closest in technical essence to the claimed solution is a local ventilation device with gas purification, containing a hydraulic filter, a fan and an irrigated polluted air sampling unit and a water tank with a pump mounted on a trolley (see A. p. No. 1801612 of 04.22.91, MKI B05V 5/12). The polluted air sampling unit is a water-washed hopper, with a suction pipe connected through a water trap containing a filter partition, with an exhaust ventilation duct, a hydraulic filter and a fan. Water to create a film on the inner surface of the hopper is pumped from a hydraulic filter channel located in the water tank. The cart is mounted to move along the painted product.

In the known device, in comparison with the above-described analogue, a significant portion of the contaminated air is removed from the coloring zone. In addition, the degree of purification of polluted air increases due to its passage through a water curtain formed by water flowing from the walls of the hopper.

However, the known device does not allow the selection of contaminated air in the upper part of the coloring zone, and the filters used in the known device do not provide complete air purification.

The creation of a utility model is based on the task of improving the design of a local ventilation device with gas purification, in which, due to the new design of the contaminated air extraction unit and the gas purification system, as well as the relative position of the units, forced-air and exhaust ventilation is provided with complete air purification directly in the paint zone, and therefore, is increased the effectiveness of the claimed device.

To solve this problem, a well-known adsorber and container are introduced into the well-known local ventilation device with gas cleaning, containing a hydraulic filter, a fan and an irrigated polluted air extraction unit and a water tank with a pump mounted on a trolley, according to a utility model

$ JQ-COSZ (JL60

for the collection of contaminants, the hydraulic filter is made in the form of a vortex gas-liquid reactor, the fan is made inlet and exhaust, the polluted air sampling unit consists of two local suction vortex devices installed with the ability to move at the ends of a vertically located supply and exhaust duct, the supply duct of which is connected to the fan, the exhaust duct - with the first input of the hydraulic filter, the second input of which is connected to the pump, and the first, second and third outputs are connected respectively to the container for boron contamination of the water tank and the adsorber. The upper part of the exhaust duct of the supply and exhaust duct is connected to the pump, and the lower part to the water tank. The adsorber, hydraulic filter, fan and dirt collection container are mounted on a trolley.

In addition, the supply and exhaust duct of the polluted air sampling unit contains two coaxial rigid ducts, of which the internal is exhaust and the external supply, the ends of the internal duct are made of movably connected pipes, the ends of the external duct are flexible.

The adsorber contains removable cartridges with carbon fiber adsorbent.

In a specific example, the trolley is equipped with a working platform with a control panel for moving and operating the device.

In the inventive local ventilation device with gas purification due to the introduction of an adsorber and a container for collecting contaminants, the use of more efficient, compared with the analogue and prototype, vortex devices for the selection of polluted air and its filtration, the execution of the ends of the vertical supply and exhaust air water with the possibility of their location in the place of pollution, as well as the compact placement of the device elements on the trolley, ventilation is provided with complete air purification directly of a coloring zone, and hence increased efficiency of the device.

The drawing schematically shows the inventive device.

The local ventilation device with gas cleaning includes a hydraulic filter 1, a fan 2, an irrigated block 3 for the selection of contaminated air, a water tank 4 with a pump 5, an adsorber 6 and a container 7 for collecting contaminants. The hydraulic filter 1 is made in the form of a vortex gas-liquid reactor. The fan 2 is made of supply and exhaust. Block 3 of the selection of polluted air consists of two vortex devices 8 local suction installed with the ability to move at the ends of a vertically located supply and exhaust duct 9, the supply duct of which is connected to the fan 2, the exhaust duct to the first input of the hydraulic filter 1, the second input of which is connected to pump 5, and the first, second and third outputs are connected respectively to the container 7 for collecting impurities, the tank 4 for water and the adsorber 6. The upper part of the exhaust channel of the supply and exhaust duct 9 is connected Nena pump 5, and the bottom - with a capacity of 4 for water. All units of the device are mounted on the cart 10.

The supply and exhaust duct 9 of the polluted air extraction unit 3 contains two coaxial rigid ducts, of which the internal duct 11 is the exhaust duct and the external duct 12 is the supply duct. The ends 13 of the internal duct 11 are made of movably connected nozzles. The ends 14 of the external duct 12 are flexible.

The adsorber 6 contains removable cartridges 15 with a carbon fiber adsorber.

The cart 10 is equipped with a work platform 16 with a remote control 17 control the movement and operation of the device.

As a hydraulic filter 1, a vortex gas-liquid reactor according to the patent of the Russian Federation No. 2084269 can be used.

An example of a fan 2 used is fan No. 4, L 5000 m / h, h 160 mm water. pillar.

Capacity 4 for irrigation water is made, for example, in the form of a standard tank, the volume of which depends on the duration of painting, for example, 100 l of water for applying two layers

2 paints per 1.5 thousand m surface of the aircraft.

Pump 5 can serve as a standard device with a capacity of 5 m / h and a pressure of 30 m.

An example of a local suction vortex apparatus is a device protected by patent of the Russian Federation No. 2046258.

The ends 13 of the internal duct 11 may comprise

for example, formed by the nozzles of the last turn node

o around the axis by 90 and telescopic units for vertical and horizontal feed with a rotation of 45.

A local ventilation device with gas cleaning works as follows.

The device is installed at a distance of at least 300 m from the product to be painted. His work and the movement of the trolley 10 is carried out from the remote control 17 under the control of a worker, which can be located both on the platform 16 of the trolley, moving with it, and on a stationary platform.

3

about

The vortex apparatus 8 of local suction using the movable ends 13 of the internal exhaust duct 11 of the supply and exhaust duct 9 focuses on the areas of application of paints and varnishes, that is, in the zone of maximum emission of environmentally harmful gaseous and aerosol products, for example, solvent vapors and paint aerosols. When compressed air is supplied to the painting unit (not shown in the drawing), fan 2 and pump 5 are simultaneously turned on, which supplies irrigation water to the hydraulic filter 1 and the upper part of the internal exhaust duct 11 of the supply and exhaust duct 9. The waste water is discharged into a water tank 4. The supply air from the fan 2, passing through the supply channel of the duct 9 of the block 3 for the selection of contaminated air, namely, through the supply air duct 12 through its flexible ends 14 enters the corresponding vortex devices 8 local suction.

In vortex apparatuses, air swirls and exits, perpendicular to the axis of the apparatus, in the form of a swirling fan stream, not mixing with contaminated air, and is evenly distributed in the breathing zone of the worker. The high ejection ability of the supply jet, without introducing interference into the technical process of painting, forms a suction torch through which polluted air is transported. Last through

the movable ends 13 of the internal exhaust air duct 11 of the supply and exhaust duct 9 irrigated with water enters the first inlet of the hydraulic filter 1 irrigated through the second inlet with water.

In hydrofilter 1, made in the form of a vortex gas-liquid reactor, the air is cleaned from paint aerosols to a degree of 99%, and from solvent vapors to a degree of 90%, due to the creation of a bubble-foam gas-liquid layer in its vortex chamber (not shown). structure stabilized by centrifugal force field. The layer is characterized by a large phase contact surface, high update rate, structure homogeneity and stability in a wide range of gas and liquid flow rates, which makes it possible to sharply intensify the exchange process.

Thus, there is an effective separation of gas and liquid after their interaction with subsequent separate removal through the first, second and third outlet pipes of respectively coagulated pollutants into a container 7 for collecting contaminants, irrigation waste water into a water tank 4 and partially purified air into adsorber 6. In the latter, with the help of cartridges 15 with a carbon fiber adsorbent, air is purged from solvent vapor to a degree of 99%.

The suction of completely purified air from the adsorber 6 and its supply to the supply duct of the supply and exhaust duct 9 is carried out by the fan 2, after which the cycle repeats.

The results of the experiments showed that the long-range vortex devices 8 of local suction is 6-7.5 calibers (the diameter is taken as the diameter of the suction pipe of these devices), which ensures that the product is painted in accordance with sanitary standards on a section up to 4 m long from one position of the cart 10 .

Applicant:

Director of the South State Aviation Engineering Research Institute

industry / N

"Yuzhgiproniiaviaprom - 1 / JVB.U. Silich

v cii - i

Claims (4)

1. A local ventilation device with gas cleaning, containing a hydraulic filter, a fan and an irrigated polluted air extraction unit and a water tank with a pump mounted on a trolley, characterized in that an adsorber and a container for collecting contaminants are introduced into the device, the hydraulic filter is made in the form of a vortex gas-liquid reactor, the fan is made by the supply and exhaust, the block of selection of polluted air consists of two local vortex suction devices installed with the possibility of movement at the ends vertically located about the supply and exhaust duct, the supply duct of which is connected to the fan, the exhaust duct is with the first inlet of the hydraulic filter, the second inlet of which is connected to the pump, and the first, second and third outlets are connected respectively to the pollution collection container, water tank and adsorber, upper a part of the exhaust duct of the supply and exhaust duct is connected to the pump, and the lower part is connected to a water tank, an adsorber, a hydraulic filter, a fan and a container for collecting contaminants are mounted on a trolley.  2. The local ventilation device with gas purification according to claim 1, characterized in that the supply and exhaust duct of the polluted air sampling unit contains two coaxial rigid ducts, of which the internal is exhaust and the external is supply, the ends of the internal duct are made of movably connected nozzles, the ends of the external duct are flexible.  3. The local ventilation device with gas purification according to claim 1, characterized in that the adsorber contains removable cartridges with carbon fiber adsorbent. 4. The local ventilation device with gas cleaning according to claim 1, characterized in that the trolley is equipped with a work platform with a remote control for movement and operation of the device.