SU1707392A1 - Flow restrictor - Google Patents

Abstract

The invention allows to increase the reliability of throttles in operation. In the internal cavity 3 of the housing 1, the throttling element 2 is mounted for axial movement. In cavity 3, it is made; central cylindrical bore 4, in which the sleeve 2 covering element 2 is installed. Sleeve 5 is made on the outer surface of sleeve 5 and groove 7 with inclined walls b is made. On the end surfaces of the element 2, the grooves 9, 10 are made. The grooves 9, 10 and the flats 6 in the extreme positions of the element 2 and the sleeves 5 form throttling slots respectively with the end surfaces of the cavity 3 and the bore 4. In the wall 13 of the housing 1 there is a screw 14 with a tapered shank 15, interacting with the walls. 3 il. with s

Description

1

This invention relates to armored growth.

The aim of the invention is to increase the reliability of E operation drossel.

FIG. 1 shows the choke) in FIG. 2 - section LA in Fig. 1 | on fig.Z - section bb in fig, 1.

The throttle has a housing 1 and a throttling element 2 mounted for axial movement in the inner cavity 3 of the housing 1. In the cavity of the housing 1 there is a central cylindrical bore k and a sleeve 5 is installed in it that surrounds the throttling element 2. On the outer surface of the sleeve 5 there are flats 6 and a groove 7 with inclined walls 8. Grooves 9 and 10 are made on the end surfaces of element 2. Grooves 9 and 10 in the extreme positions of the throttling element 2 form throttling slots 11, and flats 6 in the extreme positions of the sleeve 5 o. form a throttling slot 12 respectively with the end surfaces of the cavity 3 and the cylindrical bore of the housing 1. In the wall 13 of the housing 1 zakreplen1 screw with a tapered shank 13 cooperating with inclined walls 8 of the groove 7.

.-Choke works as follows.

If the screw 1k is screwed all the way into the groove 7 of the sleeve 5, then when the working medium is supplied to the channel 16, the sleeve 5 does not mix, and the throttling element 2 by the medium pressure shifts to the extreme left position, blocking the opposite end of the channel 17 of the housing 1, so that the medium is choked only through the throttling slots 11. When the screw 14 is unscrewed by the pressure of the working medium, the sleeve 5 moves to the left until the screw shank 15 contacts the inclined wall 8 of the groove 7, reducing the gap 18 between the end of the sleeve 5 and the end of the cylindrical plant chki housing 1. The resistance to expiration

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whose medium will increase as the ginta is unscrewed and will reach the maximum value when the end face of the bushing 5 is in contact with the end face of the bore 4, since the medium will additionally be throttled through the throttling slots 12.

When supplying the working medium to the channel 17, the choke works in a similar way.

If necessary, the diameters of the flow channels 16 and 17, as well as the dimensions of the throttling slots 18 and 12, can have different sizes when the working medium flows into the channels 16 and 17, which allows for different characteristics of throttling.

Thus, the throttle provides throttling with either one slit 11, or two slits 11 and 13, or two slits 11 and 12. Therefore, the throttle is capable of changing the degree of throttling of the working medium over a wide range, thereby increasing the reliability of throttles in operation.

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Claims (1)

Invention Formula A choke, in the internal cavity of the casing which is mounted with the possibility of axial movement, a throttling element, characterized in that, in order to increase reliability in operation, a central cylindrical bore is made in the cavity of the casing and a sleeve is installed around the throttling element, groove with inclined walls, and on the end surfaces of the throttling element grooves are made, the latter and the flats in the extreme positions of the throttling element and the sleeve The throttling slots, respectively, with end faces of the cavity and the cylindrical bore, are pressed, while in the machine tool case there is a screw with a tapered shank that interacts with the inclined walls of the groove “ 12 FIG. 2 FI.3