SU1389890A1 - Arrangement for scraping the internal surface of tubes - Google Patents

Description

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The invention relates to the cleaning of parts from scale, corrosion products and other contaminants.

The purpose of the invention is to increase productivity by making a working head with cleaning rods.

Figure 1 schematically depicts., Device, general view; figure 2 - node 1 in figure 1; on fig.Z - an element of variable elasticity; figure 4 - section aD on fig.Z; in FIG. 5 a working body.

The device contains a cylindrical hollow body 1 with a spherical cap 2 in the tail part in the direction of the device movement, and a fitting 3 is placed on it for supplying the working agent (compressed air) to the variable elastic element 4 consisting of outer 5 and 6 telescopic cups with a gland seal 7 and a locking ring 8, and fastened to the rear support and the piston with bolts 9, a knuckle 10 for supplying dry air into the housing, an impeller 11 rigidly mounted on the shaft 12 passing through the rear bearing 13 with holes 14 for passage p a working agent (compressed air), a piston 15 with openings for the passage of compressed air with cams 16, a coupling 17 with cams 18, an anvil ring 19 rigidly fixed on the housing 1,. front support 20 with openings 21 for the passage of a working agent, air distributor 22 of a trapezoidal shape with openings 23 for passage of a working agent, working member 24 located in the forward part of the device’s movement consists of a fixed outer casing 25 with channels 26 combined elements consisting of a cleaning rod 27, pressed into the holder 28, a return spring 29, an outer protective leatherette 30 with holes 31, an inner casing 32 with holes 33, a flange 34 for assembling the working member a, fastening screws 35, flap 36, sealing apron 37, transitional pipe 38, onopm-ix rollers 39, centering the device in the pipe 40.

The device works as follows.

Through shtucer 10 compressed air enters the housing 1, the rotation of the turbine 11 with the shaft., And further.

the passage through the openings 14 of the rear support 13, the piston 15 and through the openings 21 of the front support 20, through the nozzle 38 enters the air distributor 22, which rotates together with the shaft 12. At the same time, the air cavity 23 and 33 periodically communicates with the channels 26 stationary outer cage 25. Compressed air when communicating the cavity of the air distributor 22 with the channels 26, acting on the combined cleaning elements, tells them forward movement (push), while the cleaning rods 27 through the openings 31 of the outer surface The protective casing treats the surface of the pipe 40 to be cleaned with 30 ends, and compressing the air passing through the gaps in the channels 26 removes the cleaning products from the surface. Upon further rotation of the diffuser 22, the communication of its cavity with the channels 26. The return spring 29 is also terminated, opened and acted upon the holder 28, returns the cleaning rod 27 to its original position. The cleaning cycle is complete.

The device is moved along a pipe as follows. Through shtucer 3 squeezing air enters element 4 of variable elasticity, the pressure in it rises, the inner telescopic cup 6 extends the pressure piston 15 attached to it with cams 16 and cams 18 of clutch 1.7 rotating together with shaft 12. At this, cams) 8 at rotated with the shaft 12 with their oblique planes, interacting with the cams I6-, the piston 15 is taken away to the rear support 13 to the height of the cam 18. With further rotation of the shaft 12, the cam 16 slides off the plane of the cam 18, while under the action of the variable element and 4, piston 15 is fixed to the thrust ring 19 is rigidly fixed in the housing 1, and is removed in it. The impact energy is transmitted to the hull and informs him of the supply (supply). The change in pressure in the variable elastic element changes the impact force of the piston 15 against the stop ring 19, thereby changing the amount of energy transferred to the housing 1 and allows you to regulate the flow of the device, in the pipe being cleaned, the proposed device for cleaning the inner surface of pipes allows a change in the pressure of the compressed air supplied through the nozzle 10 to change the impact force of the cleaning rods 27, and a change in the pressure of the compressed air supplied through the nozzle 3 to the feed mechanism, which includes en-

elasticity with cups 5 and 6, a piston 15 with cams 16, muffs 17 with cams 18 and an anvil ring 19, allows the device to vary in flow to obtain the required capacity and quality of cleaning, and in addition provides the ability to clean pipes and pipelines from various - materials and any length.

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Claims (2)

1. DEVICE FOR CLEANING THE INTERNAL SURFACE OF PIPES, installed with the possibility of reciprocating movement along the workpiece and made in the form of a housing with a working head, consisting of a rotating part and a stationary one, characterized in that, in order to increase productivity, the rotating part of the working head is made in the form of an air distributor of a trapezoidal shape with holes on its lateral surface, and the fixed part is made in the form of a holder with channels and treatment rods located in the can ah, each of which is intended for contact with corresponding diffuser opening. 2. The device according to π.1, characterized in that it is equipped with a variable elasticity element, a piston with a cam and a thrust ring with a cam rigidly mounted on the housing and designed to interact with the piston cam, while the piston is connected with the variable elasticity element.