SU972098A1 - Hydraulic monitor nozzle - Google Patents

Description

(5it) INSTRUMENT HYDRO-MONITOR

one

The invention relates to the mining industry and is intended for the hydraulic destruction of rocks.

The nozzle of the jetting machine is known, comprising a housing, an outer one, an inner one with channels and a bottom and intermediate nozzles forming between them annular channels, a spring-loaded stepped valve with an annular groove at a smaller internal cylindrical stage, an adapter and a sleeve, made in the form of a cross with holes on the ends for fixing it with a finger in the nest of the end of the external pipe 1.

The disadvantage of the device is the lack of compensation of the reactive power of the pulsed jet and lack of reliability.

The closest technical solution to the present invention is a jetting nozzle, including a pressure pipe connected to it.

a housing with longitudinal channels, a nozzle and an exhaust nipple, a branch pipe with channels and a bottom inside the housing and a stepped valve with a spring 2.

The drawbacks of the device are large dimensions and lack of reliability.

The purpose of the invention is to increase reliability and reduce size.

Claims (2)

The goal is achieved by the fact that in a device that includes a shut-off pipeline, a housing connected to it with longitudinal channels, a nozzle and a fitting, a branch pipe located inside the housing with channels and a bottom and a stepped valve with a spring, in the head part of the housing there is an annular chamber communicated additional longitudinal channels made in the housing, with a pressure pipe, in the annular chamber placed the head of the stepped valve, on the outer surface of which are made longitudinal ystupy and pipe installed within the staging valve with the possibility of axial movement. FIG. 1 shows a jet nozzle, a longitudinal section; in fig. 2 shows section A-A in FIG. 1. The nozzle of the jetting machine consists of a movable sleeve 1 with a nozzle 2, a housing 3 with an exhaust fitting 4, an internal nozzle 5 with an external annular groove 6, channels 7, a cavity 8 and a bottom 9, a stepped valve 10, a valve spring 11 located inside the valve 10 between the bottom 9 of the internal nozzle 5 and the inner annular protrusion 12 of the valve 10, transition 13. The sleeve 1 is designed as a cross, and at the ends H there are holes 15 for fingers 1b entering the sockets 17 of case 3. Finger 16 enters through hole 15 end of 1 cross in one of the sockets 17 3 and is fastened a pin 18. The head portion of the housing 3 an annular chamber 19 which communicates with additional longitudinal channels 20 formed in the housing 3 with the rear cavity 21, formed between the adapter 13 and valve tail section 10, and communicates with pressurized water. On the outer surface of the valve 10 there are annular projections 22 and 23 of different diameters and longitudinal projections in contact with the housing 3. In the head part of the valve 10 there are radial through channels 25. In the large annular projection 23 of the valve 10 there are longitudinal channels 2b. The inner pipe 5 is placed with the possibility of axial movement inside the head part of the valve 10 and its outer annular groove 6 is constantly communicated by channels 7 with its cavity 8 and the impulse nozzle 2. The nozzle of the monitor works as follows. After adjusting the nozzle to a predetermined mode of operation, water under pressure passes from the pressure pipe through the cavity 21 of the adapter 13, channels 26 and the gaps between the valve 10 and the housing 3 and is discharged through the exhaust fitting k to the atmosphere. At the same time, the water fills the channels 20 and the annular chamber 19. Under the action of the velocity head, the valve 10 is carried forward, compressing the spring 11. When the projection 22 of the valve 10 reaches the tail end of the housing 3, the outflow of water through the exhaust nozzle 4 is interrupted, and the radial channels 25 communicate with the annular chamber 19. The nozzle 2 through the cavity 8, the channels 7, the annular groove 6, the channels 25, the chamber 19, the channels 20 and 26 communicate with the tail cavity 21 and the pressure pipe. Since the cross section of the exhaust nipple is several times larger than the cross section of the nozzle 2, when shut off by the valve 10 of the exhaust nipple in the pressure pipe, a hydraulic shock is created accompanied by an increase in pressure, throwing a portion of the liquid through the impulse nozzle 2 onto the object of destruction. After the overpressure phase, with a water hammer, the underpressure phase begins, equal in duration to the first one. During this period, the spring 11 returns the valve 10 to its original position, opening the exhaust nozzle and closing the channels 25, the outflow of water through the pulse nozzle 2 stops and resumes through the exhaust nozzle. The cycle is repeated. The reaction force from the emission of a pulsed jet, acting on the bottom 9 of the nozzle 5, moves it backward, compressing the spring 11 and thereby reducing the return of the nozzle backwards. The proposed device allows to increase the reliability and reduce the dimensions of the jetting nozzle. Claims of the jetting nozzle including a pressure pipe, a body connected to it with longitudinal channels, a nozzle and an exhaust nipple. A socket located on the body with channels and a bottom and a stepped valve with a spring, so as to increase its reliability and reduce dimensions, in the head part of the body there is an annular chamber, communicated by means of additional longitudinal channels, made in the body, with a pressure pipe, the head part of the stepped steps is placed in the annular chamber o valve, on the outer surface of which longitudinal