SU1218135A1 - Nozzle for sprinkling water onto dust emission foci - Google Patents

Description

The invention relates to the field of mining and can be used to suppress dust in mines and mines.

The purpose of the invention is to increase the effectiveness of dust suppression by creating a controlled pulsating flow of irrigation fluid.

FIG. 1 shows a nozzle, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The nozzle for irrigation of dust centers consists of a hollow body 1 with a nozzle nozzle 2. The body 1 is equipped with a rod 3 with a spray gun 4, on the forming surfaces of which screw holes 5 are made for the passage and twisting of the water jet. To prevent clogging with solid particles, the corners of the nozzle nozzle 2 and sprayer 4 are different. In the rod 3 there is an axial channel 6 and the radial channels 7 connected to it. On the rod 3, the washers 8 and the nuts 9 are fastened with the aid of the spacer sleeve 10 flexible diaphragms 11 and 12, the outer contour of which is fixed in the housing 1 through the sleeves 13 and 14 by the fitting 15 which is made in the form of a cover 16 with openings 17. The diaphragms 11 and 12 form hydraulic cavities 18 and 19, which can freely communicate with each other through channels 6 and 7. Moreover, the area of the diaphragm 11 from the cavity 18 is active more than the diaphragm area 12 from the side of the cavity 19.

Seat 20 is mounted on the end of stem 3, and sealing seal 21 is coaxial with it on cover 16. Between diaphragms 11 and 12, a spring 23 is placed in cavity 22, protected by water, with one end resting on shoulder of spacer sleeve 10, and another - into the bead of the cup 24; in this case, due to the reinforcement of the spring, the cone of the atomizer contacts the orifice of the nozzle 2. In the cup 24 there are radial holes 25, and in the sleeve 13 in the housing 1 between the diaphragms 11 and 12 are made longitudinal grooves 26 and 27, in which pins 28 are installed protruding beyond housing I Their external ends fit into the grooves 29 placed at the end of the thrust washer 30, which with the help of the nut 31 has the ability to move relative to the housing 1 and change the rigidity of the spring 23. In the nozzle 2, holes 32 are made for ejection into water Noah ambient air.

The nozzle works as follows.

In the initial position (in the absence of water supply), the spring 23 through the spacer 10, the bending of the diaphragm 11 and 12, presses the rod 3 with the sprayer 4 to the nozzle nozzle 2. A gap is formed between the seat 20 and the sealing element 21. When supplying water from the line enters through the nozzle 15 and the holes 17 into the cavity 19 and then through the channels 6 and 7 into the cavity 18 of the housing 1. The bend in the slots 5 of the sprayer 4, goes through the nozzle nozzle 2, forming an irrigation plume. A nozzle is formed in the nozzle nozzle 2, creating an ejection of ambient air through the channels 32. At the same time, water from the nozzle nozzle 2 acts on the diaphragm 11 and on the side of the cover 16 - on the diaphragm 12. Because the active area of the diaphragm 11 is larger than the active area of the diaphragm 12 , the force created by the pressure of water on the diaphragm And, the greater the total force created by the pressure of water on the diaphragm 12, and the spring 23, the rod 3 under the action of the difference of forces is shifted towards the cover 16, the seat 20 is in contact with the sealing element 21, blocking the flow of water into the channel 6. The access of water to the cavity 18 is stopped, which. causes a drop in pressure and, accordingly, a decrease in the force acting on the diaphragm P. At the same time, the pressure increases in the cavity 19 until the force acting on the diaphragm 12 and the spring force does not exceed the force acting from the side of the diaphragm 11. The rod 3 with the atomizer 4 will move toward the nozzle nozzle 2, and between the sealing element 21 and the saddle 20 a new gap is formed for the free passage of water into the cavity 18. Then the cycles are repeated, causing pulsating spraying of water.

The change in the ratio of the forces acting on the diaphragm Ni 12 and, accordingly, the frequency of the water flow pulsations is achieved by adjusting the spring 23, which is produced by rotating the nut 31, which causes axial movement of the thrust washer 30, pins 28 through the grooves 26 and 27, the cup 24 and the spring 23 .

Fig.Z

Claims (1)

NOZZLE FOR IRRIGATING DOMESTIC CENTERS, including a housing, a nozzle nozzle, a spray nozzle, a diaphragm mounted on a spring-loaded stem with a hydraulic cavity between it and the housing, and a nozzle with inlet channels, characterized in that, in order to increase the efficiency of dust removal by creating adjustable pulsating flow of irrigation fluid, the nozzle is equipped with an additional diaphragm installed by means of a spacer sleeve with a shoulder on the rod and forming an additional hydra with the housing an influential cavity, a sealing element installed in the nozzle nozzle coaxially with the stem, a bead with a shoulder and radial pins installed between the diaphragms, and a thrust washer with a nut mounted on the outer surface of the housing with the possibility of axial movement, while the saddle located in the stem is made in the end face, and the channels connecting the hydraulic cavities, and longitudinal grooves are made in the spacer sleeve, housing and thrust washer, which include radial pins, and the rod spring is placed between the beads of the stack on and spacer sleeve. FIG. 7