SU581284A1 - Hydraulic gun nozzle - Google Patents

Description

: 54) INSTRUMENT HYDRO-MONITOR

one

The invention relates to mining and can be used to destroy rocks and materials with a pulsed jet of fluid.

The nozzle of the jetting machine is known, comprising a casing of coaxially arranged nozzles forming between themselves an annular channel l.

A nozzle of a jetting machine is also known, comprising a housing with an annular channel and a spring-loaded differential piston, periodically communicating a sub-piston cavity with a pressure pipe 2D.

The closest technical solution is a jetting nozzle, including a housing with channels, an annular differential valve, a differential piston-valve with an axial cavity connected to the pressure chamber by means of a glass with lateral orifices.

The purpose of the invention is to improve the reliability of operation of the device.

This is achieved by those. that the glass in the nozzle of the jetting machine is rigidly fixed to the shiutri differential port 1; 1 h-valve.

FIG. 1 shows an attachment of a jetting machine, a longitudinal section; Fig.2 is the same transverse section.

The nozzle of the jetting machine consists of a front joint 1 with a pulse nozzle and an annular nozzle 3, passing into cavity 4 of housing 5 with channels 6, 7, 8 and ring groove 9, ring differential valve 10 with internal eccentric ring protrusion 11 and holes 12, differential a piston 13 with an outer annular protrusion 14 and an adapter 15. The annular cavity 16 is formed by the front cover 1 and the housing 5 and is permanently connected with a pulse nozzle 2. A glass 17 is installed in the cavity of the differential port 11: n 13 and rigidly attached to it. In the glass 17 made side holes 18 located in the same plane. Between the cup 17 and the cavity of the differential piston 13, an annular channel 19 is formed, which is connected to an axial channel 20, passing into a pulse nozzle 21. The glass 17 is mounted on a pipe 22 fixed in the bottom of the housing 5. The cavities of the glass 17 and pipe 22 represent the pressure chamber communicated with pressure pipe. Jet nozzle works as follows. The discharge fluid from the pipeline enters the overpiston cavity of the adapter 15, the cavity of nozzle 22, cup 17 and nozzle 21. At the same time, through channels 8, 9 and 12, it enters the piston 13 above the piston cavity, from the piston 13 aodite and the glass 17 fixed to it back. Having traveled a predetermined distance, the front end protrusion 14 of the piston 13 emerges from the cavity 4 and the liquid from under the piston cavity under pressure rushes through the annular nozzle 3 to the object of destruction. At the same time, the fluid continues to retract the piston 13. In this case, from the top 18 of the cup 17, they overlap with the nozzle 22 and the outflow of fluid through the interruption is interrupted. nozzle 21. Next, the piston 13 touches its protrusion 14 with the protrusion 11 of the valve 10 and tears the valve 10 away from the cover 1, thereby jointly connecting the piston chamber with the annular cavity 16 and the pulse nozzle during the initial period of movement backwards the holes 12 of the valve 10 are displaced relative to the annular groove 9 and the fluid coming from the water supply through the pipe 22, acts from the inside of the cup 17 to its bottom, changing the direction of movement to the opposite and with this flow rushes forward. At the moment when the protrusion 14 then n 13 enters the cavity 4, the nozzle 3 is closed by this projection, free from version 18 of the pipe 22 and the nozzle 21 communicates with the cavity of the cup 17 and the pressure pipe. A sudden braking of the fluid above the piston and in the pipeline takes place, i.e. a hydraulic shock occurs here, accompanied by a sharp increase in pressure, under the action of which the piston 13 ejects liquid from the piston cavity through 21 IS W

Vt Zff 12 1719 W22

Claims (3)

 / cut the annular cavity 16 and the pulse nozzle 2 onto the destroyed array. Simultaneously, a shot is fired through the impulse nozzle 21. The nozzle 21 communicates with the pressure pipe during the period when the protrusion 14 of the piston 13 is in the cavity 4, Consequently, the impulse nozzle 21 is open for a longer time compared to the impulse nozzle 2. Accordingly, through the nozzle 21 is ejected more fluid. Upon further forward movement, the piston 13 encounters a valve 10 moving towards it with the pressure of a liquid, carries it along with itself to the cover i and blocks with its help the liquid outlet through the pulse nozzle 2. Open the holes 12 of the valve 10 again coincide with the annular groove 9, the pressure fluid enters through them in the piston chamber, retracts the piston 13, and the process repeats. The invention The nozzle of the jetting machine, comprising a housing with channels, an annular differential valve, a differential piston-valve with an axial cavity connected to the pressure chamber by means of a glass with side openings, which in order to ensure reliable operation, the glass is rigidly fixed inside the differential piston valve. Sources of information taken into account in the examination: 1. The author's certificate of the USSR 241367, cl. E 21 C 45/00, 1967. 2. USSR author's certificate number 365455, cl. E 21 B 5/00, 1970. 3. Authors certificate of the USSR 375367, cl. E 21 B 5/50, 1969. S