SU1304903A1 - Apparatus for painting articles - Google Patents

Abstract

This invention relates to spray booths used to paint products in various industries. The purpose of the invention is to improve working conditions. The aerodynamic and amorphous control mechanism of the flap 11 type is switched on in the water supply 4 and compressed air lines 7 by parallel bypass ducts made outside the ventilation duct 10 and connected to the hydraulic filter 3 and the spray gun 6 via the bypass valve 16. At that, the compressed air supply is blocked . to sprayer 6 in the absence of a water supply to the hydro-filter 3, i.e. when the fan 9 is running and the water recycling pump 5 is not running. 2. W. p. f-ly, 7 ill. (L

Description

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11304903

The invention relates to painting booths and can be used in any industry for painting products.

The purpose of the budget is to improve working conditions.

FIG. 1 shows the scheme of the proposed device for painting products, a general view; in fig. 2 is a section A-A in FIG. 1 (exhaust vent with a control mechanism in the working position); in fig. 3 shows a section BB in FIG. 2. (Exhaust vent with damper in working position); in fig. 4 - non-working (closed) position of the control mechanism; in fig. 5 - bypass valve in the working position, longitudinal section; in fig. 6 and 7 - bypass valve. In non-working (closed) position, longitudinal section, variants.

The device comprises a chamber 1 with an opening 2 for air intake, a hydraulic filter 3 included in the pressure line 4 of the water supply by means of a recirculation pump 5, a spray gun b included in the pressure line 7 of the compressed air supply, and supply and exhaust ventilation 8 with a fan 9 and the exhaust channel 10 (Fig. 1). Channel 10 has an aerodynamic control mechanism, such as a flap 11, made in the form of a rotating-return angle (Fig. 3). The support 12 and the axis 13 of the flap 11 outside the exhaust channel 10 are provided with parallel bypass channels 14-15 that are connected when the fan 9 is running, respectively, to the water supply line 4 and to the compressed air supply line 7 (Fig. 2).

The device also has a bypass valve 16 connected by one

a controllable locking element 21 in the absence of water supply to the valve 16, for which the differential piston 17 and the housing 22 of the valve 16 are interconnected telescopically and have a through axial channel 23 for the passage of compressed air through the built-in locking element 21 and the working small cavity 20 valve 16 to the sprayer 6. The locking element 21 may be made in the form of an elastomeric bushing located between the inner end profiled surfaces of the piston 17 and the housing 22 and volumetrically deformed by them Springs 18 (Fig. 6, position closed) with no water supply to valve 16 (fan 9 or pump 5 is faulty),

In the second embodiment, the locking element 21 can be made in the form of a controlled check valve (Fig. 5 and 7), which operates at the end of the stroke of the piston 17 due to the stop of the check valve in the lower inner end of the housing 22 (Fig. 5).

In order to improve serviceability, the valve 16 is preferably mounted at the bottom of the device. To reduce the noise from exhaust ventilation 8, the fan 9 can be installed in a separate room from the device.

The device works as follows:

Place the product to be painted 24 in the chamber 1 and turn on the fan 9 and the pump 5.

If the exhaust fan valve is working properly, then a pressure head is created in the exhaust channel 10, under the influence of which the butterfly valve 11 is closed from the position (horizontal expansion

25

thirty

40

  .-, ---, -, - position) occupies the position of the opening to the bypass channels 14-15, then (the vertical position on the other side - to the hydraulic filter 3 of FIG. 3). In this case, support 12 screen 11

50

and the sprayer 6. The valve 16 is located outside the device and is made with a differential pressure 17 loaded with a spring 18 in the direction of blocking the water supply to the hydraulic filter 3 and compressed air to the sprayer 6. The large working cavity 19 of the valve 16 is bypass for water with the valve running The torus 9 and the small working cavity 20 is a bypass for compressed air when the fan 9 and the pump 5 are working and the locks 11 open the bypass channels 14–15, through which water from the main 4 and compressed air from the main 7 goes to the inlet d the relief valve 16, which powers the guide, the rofilter 3 with water and the sprayer 6 with compressed air when the device is operational.

If the exhaust fan 8 does not work (the fan 9 is faulty), then there is no pressure in the exhaust channel 10 and the valve 11 does not work (horizon

five

a controllable locking element 21 in the absence of water supply to the valve 16, for which the differential piston 17 and the housing 22 of the valve 16 are interconnected telescopically and have a through axial channel 23 for the passage of compressed air through the built-in locking element 21 and the working small cavity 20 valve 16 to the sprayer 6. The locking element 21 may be made in the form of an elastomeric bushing located between the inner end profiled surfaces of the piston 17 and the housing 22 and volumetrically deformed by them Springs 18 (Fig. 6, position closed) with no water supply to valve 16 (fan 9 or pump 5 is faulty),

In the second embodiment, the locking element 21 can be made in the form of a controlled check valve (Fig. 5 and 7), which operates at the end of the stroke of the piston 17 due to the stop of the check valve in the lower inner end of the housing 22 (Fig. 5).

In order to improve serviceability, the valve 16 is preferably mounted at the bottom of the device. To reduce the noise from exhaust ventilation 8, the fan 9 can be installed in a separate room from the device.

The device works as follows:

Place the product to be painted 24 in the chamber 1 and turn on the fan 9 and the pump 5.

If the exhaust fan valve is working properly, a pressure head is created in the exhaust channel 10, under the influence of which the butterfly valve 11 is closed from the position (horizontal distance

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eleven

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The ki 11 opens the bypass channels 14-15, through which water from the line 4 and compressed air from the line 7 enters the inlet of the bypass valve 16, which supplies the guide, filter 3 with water and spray 6 with compressed air when the device is in service.

If the exhaust fan 8 does not work (the fan 9 is faulty), then there is no pressure in the exhaust channel 10 and the valve 11 does not work (horizon 313049034

Its location, in which the operation of the device due to the bypass-use bore sections of structurally simple and channel 14-15 in FIG. four). The elements that are reliable in operation are in the event of poor ventilation. blocking. the water supply to the hydro

Claims (3)

filter 3 and compressed air to the spray formula 6. In this case, the excessive consumption of water and compressed air is eliminated. 1. A device for painting the product. An LI containing a chamber connected If the pump 5 recirculation of water pa-fO with supply and exhaust ventilation, is in good condition, then when it is running; a filter with a water supply line and exhaust ventilation; water receives a spray gun mounted in the chamber through channel 14 to the valve 16 inlet, and the connection to the urine-compressed air supply line through channel 15 into that air is installed through valve 23 .. J5 in the exhaust duct Under the influence of the water pressure of the aerodynamic mechanism, the piston 17 moves downwards. In this case, the spring 18 is compressed, releasing, in order to improve working conditions, the working cavity 19 is bypass, it is equipped with a relief valve that has water to the hydraulic filter 3, and the spring 20 is blocked by a blocking element, the mechanism element 21 It bypasses compressed air. The control is connected to the supply line from channel 23 to the small working cavity. water and compressed air parallel to valve 20 16 and further to the spray-by-pass channels located 6.. outside the ventilation duct If the pump 5 recirculating water is not-25 and connected to the hydrofilter and is in good condition when the fan is running, the dust collector is through the bypass valve, then water does not flow to the valve inlet, the blocking element of which is T6 and the piston 17 under the influence of water supplied and turns off the holders 18 is at the top (in the non-compressed air supply to the sprayer than the position). In this position 30, in the absence of a supply of water to the hydraulic piston, the locking element 21 is in the filter. in the closed position (elastomer the sleeve is volumetric deformed between 2. The device according to claim 1, 1 and 2 is the ends of the piston 17 and the housing 22, which is blocked by the blocking of its opening or the return element (the 35 element of the relief valve is a valve with compressed air pressure), and spring-loaded differs blocking the supply of compressed air to the potential piston, the large cavity of the sprayer 6. This improves the bypass condition for the sanitary and hygienic conditions of the work, and the small cavity improves the discharge condition and the requirements for the explosion are 40 for the compressed air , with the case of fire and fire, presented valve and differential piston to the device for painting products. have an axial bypass duct; in the proposed device, an equal shut-off element inside it is mounted outside the dual-device to pass compressed air to a stepwise blockage of water supply to the sprayer through the small working polyfilter and compressed air to the valve gap and are interconnected Dust Collector allows comparing with telescopic. known device to increase the reliability - - 3. The device according to claim 2, the difference in operation and operational characteristics is that the shut-off device, reduce the consumption, is made in the form of elastomeric water and compressed air in the case of a sleeve located between the internal outlet By exhausting them with the ends of a telescopically interoperable or recirculating water pump and pov- ervically operating bodies, and to smash the explosion and fire safety of its piston.  I ld AT 6 / 3 X / 13 eleven Fiz.Z (8.2 1C-15 Fig.C I'm hydro  sprayer FIG. five i 1 21 FIG. 6 20 eleven I Have yy / VC / Th Jv l .ZI T / / I / 2J / (U 21 / 22 / 77. JA FIG. 7 Compiled by O. Pozdnkov Editor A. Vorovich Tehred M. Khodanich Proofreader I. Muska   .j-- jp -.- Order 1339/7 Circulation 646 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production printing enterprise, Uzhgorod, st. Project, 4