RU1820137C - Connection of high pressure hose tip and tubular member - Google Patents

Abstract

Usage: in the hydraulic drive of high pressure machines. SUMMARY OF THE INVENTION: The connection of the tip of a high pressure hose to a tubular member comprises a nipple with an elastic ring in a groove, a sleeve crimping hose. A seal is located between the hose, nipple and coupling. A cylindrical tube is installed inside the nipple. The double seal is made in the form of an elastic ring and a conical seal. On the open side, the elastic ring interacts with the cylindrical surface of the tubular element, on the hose side, with a conical surface in diameter equal to the outer diameter of the cylindrical surface of the nipple from its open side. 2 ill.

Description

The invention relates to the mining, machine tool and other industries, and can be used in the hydraulic drive of high pressure machines for various purposes.

The purpose of the invention is to increase the reliability of the connection of the hose to the valve body by increasing the tightness.

Fig. 1 shows a general view of the connection of the tip of the high pressure hose to the tubular element: Fig. 2 shows the assembly of the connection of the tip of the high pressure hose to the valve body.

The connection of the tip of the high-pressure hose consists of nipples 1, in the central bore of which a tube 2 is installed, inserted into the high-pressure hose 3, which abuts against the end of the nipple and the sealing ring 4, and with its outer surface interacts with the sleeve 5, which is crimped on this hose 3

and nipple 1. For connecting the valve body 7 to the tubular element 7 (FIG. 2), the tip is provided with a union nut 8. The nipple 1 is provided with an annular protrusion 9 on which a conical surface 10 is formed, turning into a cylindrical surface 11. A sealing gasket is made on the interface groove 12, in which a seal 13 (elastic ring) is placed, interacting with the cylindrical surface 14 of the tubular element of the valve body 7. On the hose side, the elastic ring interacts with the conical surface in diameter, p the same diameter of the cylindrical surface of the nipple with its open side. The conical surface 10 of the nipple 1 interacts with a similar conical surface 14 of the tubular element and is one of the seals.

The assembly of the compound is as follows.

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WITH

00 K O

CA) XJ

A seal 13 is mounted on the nipple 1 (Fig. 1), a union nut 8, a tube 2 and a sealing ring are installed in the central bores of the nipple 1. 4, then the sleeve 5 is screwed on, between the sleeve 5 and the tube 2, a high pressure hose 3 is installed against the end of the nipple 1. Then the sleeve is crimped around the hose to the required diameter. This is the starting position of all parts of the high pressure hose tip.

In operation, the nozzle of the high pressure hose is connected as follows.

A sleeve nut 8 is screwed onto the socket of the tubular element 7 of the valve body (FIG. 2) and a part of the nipples 1 with the cylindrical surface 11 is inserted into the central bore until the conical surfaces 10 and 14 of the nipples 1 and the tubular element of the valve body interact, and then the sleeve nut is pressed with the necessary force / eat,.

At the same time, the joint is double-sealed due to the seal 13 and the conical surfaces interacting with each other. In addition, the extrusion of the seal 13 is excluded, since the seal is mounted on the interface of the cylindrical and conical surfaces of the tubular element and the nipple 1, and between

and

10

fifteen

twenty

25

thirty

conical surfaces 10 and 14, the gap is practically absent. The implementation of the sealing groove on a cylindrical surface increases the manufacturability.

As a result of such a construction, the reliability of the connection is improved when operating at high pressures and low viscosity fluids.

Claims (1)

SUMMARY OF THE INVENTION A connection of a nozzle of a high-pressure hose to a tubular member comprising a nipple with an elastic ring in a groove, a sleeve, a compression sleeve, and a seal located between the hose, nipple and sleeve and a cylindrical tube installed inside the nipple. that it is provided with a combined double seal made in the form of an elastic ring and a metal conical seal formed by the conical surface of the nipple protrusion and the mating conical surface of the tubular elements, the elastic ring interacting with the cylindrical surface of the tubular element on the open side and with the conical surface on the hose side in diameter equal to the outer diameter of the cylindrical surface of the nipple from its open side. 7 13 8 4 2  / L /// / y . " eleven . itnif ..- y -.-.--, - .. -. - .. Mr. W. " ) / / .-, / / /} /// FIG. I L /// / U f ..- y -.-.--, - .. -. - .. ) ///. .. //. II FIR. 2