RU2591163C1 - Installation for application of paint materials and bitumen-mastic emulsions - Google Patents

Abstract

FIELD: pipes.

SUBSTANCE: invention relates to application of coating on long articles and is aimed at processing of any diameters of pipes with dense and viscous paints. Installation for application of paint materials and bitumen-mastic emulsions represents conveyor. Conveyor sections are arranged on guides cleaning and degreasing, application of coating material and drying of pipe inner surface. Plant also includes facility for pipe displacement between said sections. Section of cleaning and degreasing comprises electric actuator with retention mechanism and pipe rotation and mechanism of attachment and movement of shaft inside pipe. At one end of shaft pipe inner surface cleaning brushes are arranged, degreasing fluid spray nozzles, and rollers for uniform cleaning of pipe inner surface. Second end of shaft is fixed on platform with lifter with degreasing feed pump connected with motor, and fluid tank. Section of application of coating material involves electric actuator, on which there are retention mechanism and pipe rotation, a mechanism for attachment and movement inside pipe shaft with its one end of nozzle feed coating material and rollers for uniform application of coating material onto pipe inner surface. Section of application also includes a pump to feed coating material coupled with motor, and capacity for coating material. Drying section of pipe inner surface is a drying chamber with hot air.

EFFECT: technical result is increased efficiency and reliability during operation of pipes.

18 cl, 22 dwg

Description

The invention relates to the field of coating of long products, in particular to installations for applying coatings, mainly paints or bitumen-mastic emulsions, to the inner surface of pipes (pipelines), and is intended for coating the inner surface of a pipe with paints of any viscosity.

A nozzle equipped with a brush for internal cavities and nozzles is known in the art. This device for cleaning or surface treatment is a shaft (rod), at the end of which there are fluid nozzles and brushes (JPH 0890351, 04/09/1996).

The disadvantage of this device is insufficient surface cleaning, which leads to subsequent poor-quality application of materials to the surface.

A device for painting the inner surfaces of pipes is known, which is a shaft on which a brush for cleaning and a nozzle for applying liquid are located (GB 491868, 09/12/1938).

Such a device does not allow to process any pipe diameters with the thickest and most viscous paints and varnishes.

The problem to which the invention is directed is to create an installation for applying paint and varnish materials and bitumen-mastic emulsions, which would eliminate the above disadvantages.

The technical result achieved by the implementation of this invention is to ensure the processing of any diameter of the pipes with the thickest and most viscous paints and varnishes, increasing the efficiency and reliability during operation of the pipes. A wider and more durable brush will clean the surface of the pipe completely, and the injecting degreasing liquid is evenly applied using the rollers located on the shaft after the brushes at the stage of cleaning. NEP (scissor electric lift) at the stage of cleaning, application and at the stage of drying will evenly clean, apply and affect for the better at the stage of drying. The wheels on the NEP are driven into rotation by applying torque from electric. engine with chains. Keep the chain in tension will allow the tension roller. A stop with a bearing is installed at the ends of the NEP, which will not allow the pipe to move during its processing. Inside the furnace, the wheels on the NEP also rotate the pipe during drying to prevent the formation of tears, tubercles and peeling from the inner walls of the pipe of the applied material. Removable nozzles will allow you to choose the right nozzle for each pipe diameter. Also, this installation allows for a short time to easily replace failed parts. After this treatment, the pipe will have an inner surface covered with durable material and will withstand aggressive liquids when pumping through it under high pressure and temperatures, which greatly increases the strength and performance of the pipelines.

This installation considers the use of the paint and varnish material when applying (Fig. 13-15), where the fluid enters the nozzles on the inside of the main shaft, which eliminates the possibility of pressure increase during pumping, Fig. 19 discusses the use of bitumen-mastic emulsions when applied to the inner surface of a pipe. In FIG. 20-22 roller is designed for processing small pipe diameters.

The specified technical result is achieved in the installation for applying paint and varnish materials and bitumen-mastic emulsions, which is a conveyor, on the guides of which there are successively located sections for cleaning and degreasing, applying coating material and drying the inner surface of the pipe and including means for moving the pipe between these sections.

The cleaning and degreasing section contains an electric lift, on which a pipe fastening and rotation mechanism is installed, a shaft fastening and moving mechanism inside the shaft pipe with cleaning brushes for cleaning the inner surface of the pipe, nozzles for injecting degreasing liquid and rollers for uniform cleaning of the inner surface of the pipe, while the second the shaft end is mounted on a platform with a hoist, on which a pump for supplying a degreasing liquid, connected with an electric motor, and a container for liquid are located.

The coating material application section includes an electric lift, on which a pipe fastening and rotation mechanism is located, a shaft fastening and moving mechanism inside the shaft pipe with a nozzle for supplying coating material and rollers mounted at one end thereof for uniformly applying coating material to the inner surface of the pipe, and comprising a coating pump material associated with the electric motor; and a container for coating material.

The drying section of the inner surface of the pipe is a hot air drying chamber.

The degreasing fluid is supplied from the degreasing fluid supply pump to the degreasing fluid injection nozzles through tubes located inside the shaft.

The shaft is made of a triangular section.

Brushes for cleaning the inner surface of the pipe and rollers for uniform cleaning of the inner surface of the pipe are fixed by means of removable nozzles on three axisymmetric rods located on the sides of the shaft and on which the nozzles for the injection of degreasing liquid are placed.

Rollers for uniform application of the coating material are fixed by means of removable nozzles on three axisymmetric rods located on the faces of the shaft.

The electric lift is a height-adjustable table for installing the pipe.

The coating material is a viscous liquid or a bitumen-mastic emulsion, the supply of which from the coating material supply pump to the coating material supply nozzle is through tubes located inside the shaft.

The hot air drying chamber is a furnace, the entrance to the dryer of which consists of automatic lifting curtains to retain heat inside the furnace and containing pipes located inside, made with the possibility of lifting by means of an electric lift and rotation to avoid the formation of drops and tears on the inner surface of the pipe, and electric fans or heat guns to bring the temperature inside the oven to a drying temperature.

The coating material feed pump and the coating material container are located on a platform with a lift that is fixed to the second end of the shaft of the coating material application section.

The coating material feed pump is a UODN 130-100-75 UT24 pump, or a PN80 series vane pump, or a DS-125 or DS-135 bitumen pump.

The coating material supply pump is a screw pump located inside the shaft of the coating material deposition section and into which the coating material (liquid) enters from the coating material container through the collection channel and is moved with a screw to the discharge channel to the coating material supply nozzle.

Brushes for cleaning the inner surface of the pipe are made of metal.

Cleaning the inner surface of the pipe at the site of cleaning and degreasing is made with the possibility of using flame.

The degreasing fluid is acetone or metaph.

The electric lift is made by foot.

The conveyor is made with a control stop to avoid movement during rotation of the pipe, consisting of a freely rotating bearing.

The platform is movable by means of an electric motor with a gearbox and a chain.

The lift is made with an emphasis that prevents the shaft from going sideways and allows you to adjust the height of the shaft for different pipe diameters.

The invention is illustrated by drawings, where in FIG. 1 shows a General view of the installation for applying paint and varnish materials and bitumen-mastic emulsions on the inner surface of the pipe; in FIG. 2 is a front view of a platform with a lift; figure 3 is a top view of a platform with a lift; in FIG. 4 is a side view of a platform with a lift; in FIG. 5 - lift; in FIG. 6 - brush cleaning the inner surface of the pipe; in FIG. 7 - three axisymmetric rod; in FIG. 8 - rollers for uniform cleaning of the inner surface of the pipe on a three-axisymmetric rod with degassing liquid injection nozzles; in FIG. 9-11 - electric lift; in FIG. 12 - freely rotating bearing; in FIG. 13-15 - platform with a lift at the site of applying the coating material; in FIG. 16 - rollers for uniform application of coating material; in FIG. 17 - a shaft with nozzles for supplying coating material installed at one end thereof; in FIG. 18 - a chamber for drying with hot air; in FIG. 19 is a plot of applying a coating material with a pump for supplying a coating material in the form of a screw pump located inside the shaft; in FIG. 20-22 - a roller for processing small pipe diameters.

The installation for applying paintwork materials and bitumen-mastic emulsions is a conveyor, on the guides 4 of which there are successively located sections for cleaning and degreasing 1, applying coating material 2 and drying the inner surface of the pipe 3, and including means for moving the pipe (trolley with nozzle) between the indicated plots. The conveyor is made with a control stop 19 to avoid movement during rotation of the pipe, consisting of a freely rotating bearing.

The cleaning and degreasing section 1 contains a foot electric lift (a height-adjustable table for installing the pipe), on which a fastening and rotation mechanism for the pipe (not shown), a mechanism (not shown) for fastening and moving the shaft 16 (triangular section) inside and outside the pipe are installed with one end of it with metal brushes 12 for cleaning the inner surface of the pipe, nozzles 14 for the injection of degreasing liquid (acetone or metaph, or the like) and rollers 13 for uniform cleaning of the inner surface of the pipe. The second end of the shaft 16 is mounted on a platform 5 with a hoist 6, on which a degreasing fluid supply pump 10 is connected, connected to the electric motor 15, and a fluid reservoir 11. The brushes 12 for cleaning the inner surface of the pipe and rollers 13 for uniform cleaning of the inner surface of the pipe are fixed using removable nozzles 17 on three axisymmetric rods 18 located on the faces of the shaft 16. On three axisymmetric rods 18 there are nozzles 14 for the injection of degreasing liquid. The supply of degreasing fluid from the pump 10 for the supply of degreasing fluid to the nozzles 14 of the injection of degreasing fluid is carried out through tubes located inside the shaft 16 (not shown). The specified cleaning can be performed with the possibility of using a flame.

Section 2 of the application of the coating material includes a foot electric lift (a height-adjustable table for installing the pipe), on which the fastening and rotation mechanism of the pipe (not shown), the mechanism (not shown) of fastening and moving inside the pipe shaft 16 (triangular section) are installed with one end thereof with nozzles 25 for supplying coating material and rollers 24 for uniformly applying coating material on the inner surface of the pipe, and comprising a pump 20 for supplying coating material associated with an electric motor I have 21, and a container 23 (vat) for covering material. The rollers 24 for uniform application of the coating material are fixed by means of removable nozzles 17 on three axisymmetric rods 18 located on the faces of the shaft 16. The coating material is a viscous liquid (paint material of any viscosity) or a bitumen-mastic emulsion, the supply of which from the pump 20 for supplying the coating material to the nozzle 25 of the supply of coating material is carried out through tubes located inside the shaft 16. The pump 20 of the supply of coating material (UODN 130-100-75 UT24, or a plate pump series PN80, or bitumen pump ДС-125 or ДС-135) and a container 23 for coating material are located on a platform with a hoist, which is mounted on the second end of the shaft 16. In the case of the pump 20 for supplying the coating material in the form of a screw pump, it is located inside the shaft 16 of the application section the coating material and into which the liquid (coating material) enters from the coating material container 23 through the collection channel 28 and by means of a screw 29 is advanced to the discharge channel 30 to the nozzle 25 for supplying the coating material, while the pump 20 for feeding kryvayuschego material connected to the motor 21 via a reduction gear 31 with gland.

Section 3 of the drying of the inner surface of the pipe is a drying chamber with hot air. The hot air drying chamber is a furnace, the entrance to the dryer of which consists of automatic lifting curtains 26 for retaining heat inside the furnace and containing pipes located inside, which can be lifted by means of a foot electric lift (height-adjustable table for installing the pipe) and rotation to prevent formation drops and tears on the inner surface of the pipe, and electric fans 27 or heat guns to bring the temperature inside the furnace to a drying temperature.

The platform 5 is movable by means of an electric motor 7 with a gearbox 8 and a chain 9, and the hoist 6 is made with an emphasis preventing the shaft 16 from going sideways and allowing the height of the shaft 16 to be adjusted for different pipe diameters.

Installation for applying paintwork materials and bitumen-mastic emulsions works as follows.

At the cleaning and degreasing section (first cleaning stage), the inner surface of the pipe is cleaned of dust with the help of brushes for cleaning the inner surface of the pipe with the possible use of flame. Subsequently, a degreasing liquid (acetone, metaph, etc.) is applied using the pump for supplying a degreasing liquid.

At the site of application of the coating material (second stage), the application and coating of paints and varnishes (LKM) of any viscosities to the inner side of the pipe is carried out using rollers for uniform application of the coating material.

On the drying section of the inner surface of the pipe (third stage), the processed pipes are dried in the furnace (dryer).

This technology allows you to process any pipe diameters with the thickest and most viscous coatings. Using removable nozzles mounted on the shaft, it is possible to process pipes from the inside from 159 mm to 219 mm or more. The use of such pipes is more efficient and reliable in the operation of aggressive liquids. In addition, for processing small pipe diameters, you can use a roller (Fig. 20-22) having an iron posture 32, a clip of a roller 34, an emphasis of the roller 35 and a drain hole 33.

Strength to high pressures, to high and low temperatures, ease of installation and the ability to operate pipes, after this treatment, in any industry are also important.

When installing the pipe on the conveyor at the site of cleaning and degreasing, the pipe is lifted to a small height, using scissor lifts. Then, using an electric motor, one of the rollers on the lift starts to rotate, which leads to the rotation of the pipe. In order to avoid movement during rotation, the pipe abuts against the regulating stop installed on the conveyor. The stop consists of a conventional, freely rotating bearing.

Then, during the rotation of the pipe, a triangular section shaft begins to enter the pipe. On the one hand, metal brushes mounted on it, degreasing liquid injection nozzles and uniform cleaning rollers of the inner surface of the pipe. And on the other hand, the specified shaft is mounted on a platform with a hoist, where there is an electric motor with a pump for supplying degreasing liquid and a container for liquid (degreasing liquid). The platform is driven by a fixed electric motor with gear and chain. To strengthen the shaft from going to the side, a stop with a lift is installed, which allows you to adjust the height of the shaft for different pipe diameters.

The degreasing fluid supply from the degreasing fluid supply pump to the degreasing fluid injection nozzles is supplied through tubes located inside the shaft.

After cleaning the pipe, the scissor lift (NEP) is lowered and the pipe is installed back onto the means for moving the pipe with the nozzle and then moves along the conveyor to the coating application area. When it arrives at a given point, the pipe is also lifted using the NEP and driven into rotation. During rotation, the same shaft begins to flow into the pipe, as in the cleaning and degreasing section, only with paint coating nozzle (spray / drain) installed at one end and paint rollers for uniform application of coating material (uniform lubrication of the pipe inner surface). The coating material (liquid) enters the nozzle for supplying coating material on the inside of the shaft. At the other end, the shaft is also mounted on a platform with a hoist. An electric motor with a pump is installed on the platform (UODN 130-100-75 UT24 (Face seal 24UT), vane pumps (vane pumps) of the PN80 or DS-125, DS-135 series), which allows you to pump any viscous liquids from the tank (tank for paintwork materials or bitumen mastic emulsions / liquids) for coating material. The platform is driven in the same way as in the cleaning and degreasing section. The shaft is fixed to the stop with the lift, as well as in the cleaning and degreasing section.

Further, after the coating material deposition area (lubricating the inner surface of the paintwork pipe), the NEP lowers the pipe onto the means for moving the pipe with the nozzle and then the pipe enters the drying section of the pipe's inner surface (into the oven / dryer) through the conveyor. The entrance to the furnace consists of automatic lifting curtains to retain heat inside the furnace. Pipes inside the furnace are also lifted by NEP and rotated during drying to prevent droplets and tears from forming on the inner surface of the pipe. The oven temperature is brought to the drying temperature using electric fans, an electric heater or the use of heat guns is possible.

After the coating (drying) material deposition section, the pipes are returned back to the coating material deposition section and the process is repeated, after which the pipe enters the drying section of the pipe inner surface (into the furnace). For the best coating of the inner surface of the pipe and further failure-free operation of the pipe in aggressive environments, the stages of applying the coating material and drying the inner surface of the pipe can be repeated several times.

It is also possible to use a screw pump with an electric motor located inside the shaft of a triangular section to process the inner surface of the pipes at the coating material deposition site. The coating material enters the coating material supply pump from the coating material container through the collection channel, and is advanced to the discharge channel by a screw. Then, with the help of rollers for uniform application of the coating material, the inner surface of the pipe is lubricated.

This technology makes it easy to change the failed parts of the claimed installation in a short time.

In order to avoid hardening of the coating material inside the working bodies of the installation, the coating material deposition area is located inside a small corridor where the storage temperature of coatings or bitumen-mastic emulsions is maintained. Also, after application, the rotation of the shaft changes in the opposite direction and is in constant rotation at minimum speed. The shafts are located strictly point down.

The claimed invention improves the following characteristics: improves cleaning and degreasing of the inner surface of the pipe, improves the application of coating material on the inner surface of the pipe.

Claims (18)

1. Installation for applying paint and varnish materials and bitumen-mastic emulsions, characterized in that it is a conveyor, on the guides of which there are successively located sections for cleaning and degreasing, applying coating material and drying the inner surface of the pipe and comprising means for moving the pipe between these sections;
the cleaning and degreasing section contains an electric lift on which a pipe fastening and rotation mechanism is mounted, a shaft fastening and moving mechanism inside the shaft pipe with brushes for cleaning the inner surface of the pipe, nozzles for injecting degreasing liquid and rollers for uniform cleaning of the inner surface of the pipe, mounted on one end thereof, the second the end of the shaft is fixed on a platform with a lift, on which the pump for the supply of degreasing fluid associated with the electric motor, and a container for liquid;
the coating material application section includes an electric lift, on which a pipe fastening and rotation mechanism, a shaft fastening and moving mechanism inside the shaft pipe with a nozzle for supplying coating material and rollers mounted at one end thereof, for uniformly applying coating material on the inner surface of the pipe, and comprising a coating pump material associated with the electric motor and a container for coating material;
the drying section of the inner surface of the pipe is a hot air drying chamber. 2. Installation according to claim 1, characterized in that the supply of degreasing fluid from the pump for supplying degreasing fluid to the nozzles for the injection of degreasing fluid is carried out through tubes located inside the shaft. 3. Installation according to claim 1, characterized in that the shaft is made of triangular section. 4. Installation according to claim 1, characterized in that the brush for cleaning the inner surface of the pipe and the rollers for uniform cleaning of the inner surface are fixed by means of removable nozzles on three axisymmetric rods located on the sides of the shaft and on which the nozzles for the injection of degreasing liquid are placed. 5. Installation according to claim 1, characterized in that the rollers for uniform application of the coating material are fixed by means of removable nozzles on three axisymmetric rods located on the sides of the shaft. 6. Installation according to claim 1, characterized in that the electric lift is a height-adjustable table for installing the pipe. 7. Installation according to claim 1, characterized in that the coating material is a viscous liquid or a bitumen-mastic emulsion, the supply of which from the pump for supplying the coating material to the nozzle for supplying the coating material is carried out through tubes located inside the shaft. 8. Installation according to claim 1, characterized in that the hot air drying chamber is a furnace, the entrance to the dryer of which consists of automatic lifting curtains to retain heat inside the furnace and containing pipes located inside, made with the possibility of lifting by means of an electric lift and rotation to avoid the formation of drops and tears on the inner surface of the pipe, and electric fans or heat guns to bring the temperature inside the furnace to a drying temperature. 9. Installation according to claim 1, characterized in that the pump for supplying the coating material and the container for the coating material are located on a platform with a lift, which is mounted on the second end of the shaft of the coating material application section. 10. Installation according to claim 9, characterized in that the pump for supplying the coating material is a pump UODN 130-100-75 UT24, or a plate pump of the PN80 series, or a bitumen pump DS-125 or DS-135. 11. Installation according to claim 1, characterized in that the coating material supply pump is a screw pump located inside the shaft of the coating material application section and into which the coating material is supplied from the coating material container through the collection channel and is advanced to the discharge channel by means of a screw to the nozzle for supplying coating material. 12. Installation according to claim 4, characterized in that the brushes for cleaning the inner surface of the pipe are made of metal. 13. Installation according to claim 1, characterized in that the cleaning of the inner surface of the pipe at the site of cleaning and degreasing is made with the possibility of using a flame. 14. Installation according to claim 1, characterized in that the degreasing liquid is acetone or metaph. 15. Installation according to claim 1, characterized in that the electric lift is made by foot. 16. Installation according to claim 1, characterized in that the conveyor is made with a regulating stop to avoid movement during rotation of the pipe, consisting of a freely rotating bearing. 17. Installation according to claim 1 or 9, characterized in that the platform is movable by means of an electric motor with a gearbox and a chain. 18. Installation according to claim 1 or 9, characterized in that the hoist is made with an emphasis that prevents the shaft from going sideways and allows you to adjust the height of the shaft for different pipe diameters.

Images