CS261430B1 - The method of cleaning internal surfaces, especially branched pipe circuits and equipment for its execution - Google Patents

Abstract

The surface of the pipe is moved by irregular steel rollers, which are alternately blown with compressed air in a closed circuit. The device consists of a mobile working gallery, on which the compressed air distribution is arranged. The compressed air is controlled by a cycler and flows into the connection ends. The connection ends contain catch inserts equipped with exhaust holes.

Description

261430

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for the cleaning of internal surfaces of particularly rounded orifice tubes and apparatus for its operation.

So far, grit technologies have been used to clean the inner surface tubes. Among the best known and most advanced ones are degreasing and pickling in an aggressive bath, where the internal surfaces of the pipes are free of all dirt, scale and grease. The advantage of this cleaning technology is that the cleaned surfaces have a metallic luster. The disadvantage, however, is the high level of work safety and poor hygiene in the workroom. This technology is demanding on the need for technological equipment, for the disposal and neutralization of pickling, degreasing and neutralizing baths. It is known to purify the interior surfaces by blasting. pipes by means of compressed air and, for example, cast iron. The disadvantage of this method is that the efficiency of the cleaning with the fastening drops rapidly as a result of the cleaned tube. The drawback here is also high dustiness, because the pulp used for the wastewater treatment deteriorates and forms dust, for these jobs become hazardous. A method of cleaning the inner surfaces of the tubes by means of the ultrasonication is also known, but it is suitable for shorter tubes and must be combined with mechanical cleaning to remove the scale from the tube surfaces.

The above-mentioned drawbacks are eliminated by the technical problem of cleaning, which is solved by the method of cleaning the inner surfaces, in particular the branched pipe circuits and the device according to the invention, the principle of which is that the inner surface of the pipe, which is treated mechanically by a steel wall in the axial direction of the cleaned tube moving through the pressurized air in a closed cleaning circuit. The angle bar of the longitudinal section of the steel roller is at least half the size of the smallest diameter of the cleaned tube. Released impurities from the cleaned tube are blown out at the ends during the entire cleaning process. The essence of the invention is also that the work station of the device is mobile, in which the compressed air cycler is connected to the compressed air outlet. The compressed air distribution is terminated by connecting terminals provided with retaining inserts. Exhaust openings are provided in the receiving inserts, the diameter of which is smaller than the smallest dimension of the cleaning steel roller.

Through the cleaning of the inner surfaces, the most branched circuits. the pipes and the apparatus for doing so, complete cleaning of the inner surface of the pipe is achieved throughout the entire cross-section and along the length of the pipes of the same quality. Cleaning also has a smoothing effect on the surface. It is also an advantage of the invention that it makes it possible to clean tubes of different cross-sections for any pressures, different branched circuits and even stably embedded in the devices, possibly concreted in technological channels and the like. The device operates in a closed cleaning circuit, so it is safe for the operator.

1 is a schematic cross-sectional view of the apparatus, and FIG. 2 is a partial cross-sectional view of FIG.

The method of cleaning the inner surface of the tube was carried out as follows: 12 pieces of steel rollers 0 to 0 mm were saturated into a cleaning tube 32 mm, 2500 mm long. Purifying steel rollers were purged with compressed air in the range of 0.5 to 1.0 MPa in a sealed, cleaned tube. Cleaning steel rollers arranged in the cleaned pipe with impact on the inner surface of the pipe loosen dirt, such as scale and the like, from the pipe surface, leaving loose dirt blown out of the cleaned pipe at each work cycle.

A device for performing the process of cleaning the inner surface of a tube consists of a processing gallery 1 formed by a top plate 2 which is fixedly mounted on four legs 3. In the lower part there is a rigidly mounted bottom plate 4. On one end of the working gallery 1 feet two legs 3 is fitted with wheels 5. A pressure air distribution 10 is arranged on the work table 1, which is formed by a cycler 6 mounted on the lower plate 4 with a supply 7 of compressed air connected via the control valve 8 fixedly fixed to the lower flat bottom 2. From the cycler 6, the outlet branches 9, the ends of which are provided with connecting terminals 11, are provided. In the connecting terminals 11 there are exchangeable receiving inserts 12 in which the exhaust openings 13 are formed. branch 16.

The function of the device is as follows: Connecting terminals 11 are connected to both ends of the cleaned tube 15, with about 12 steel rollers 14 being poured into the cleaning tube 15. The cleaned pipe 15 is fixed to the upper wall 2 of the working gallery 1. Through the control valve 8, compressed air is introduced into the pipe 10 and the cycler 6 admits pressurized air through the distributors 9 to the pipe 15 to be cleaned by the steel rollers 14 blasting the inner surface of the pipe 15 For each cycle, the impurities released are blown through the exhaust openings 13 of the catch insert 12 and the exhaust branch 16 into the filter and the silencer (not shown in the figure). This is done for 5 minutes. Thereafter, the cleaned pipe 15 is disconnected from the connecting terminals 11 and releases the working gallery 1. If the pipe 15 to be cleaned is branched (FIG. 2), a plurality of cleaned circuits are divided, the opening of the uncleaned circuit being capped.

Claims (2)

5 281430 The cleaning device can be used to clean pipes stably stored in machinery, or pipes sewn in technological channels. PR E D Μ E T 1. A method for cleaning inner surfaces of branched tube circuits, characterized in that they are mechanically steered on the inner surface of the tube by steel rollers oriented in an orderly manner, which alternately move in the axial direction of the cleaning tube by means of compressed air in a closed cleaning circuit, where the angle section of the longitudinal section a steel roller at least half the smaller diameter of the cleaned pipe, which imparts loosened impurities to the cleaned pipe simultaneously at both ends throughout the purification process. vynalezu 2. Apparatus for performing a method of cleaning a stage 1, comprising a working gallery, on which a pressurized air distribution is arranged, characterized in that the working table (1) is mobile, in which the pressurized air outlet (10) is a pressurized air cycler (6), wherein the pressurized air conduit (10) is terminated by connecting terminals (11) provided with catch inserts (12), while exhaust apertures (13) are formed in the receiving inserts (12), the diameter of which is smaller than is the smallest dimension of the cleaning steel roller (14). 1 sheet of drawings