RU170306U1 - VALVE NOZZLE FOR CREATING A GAS-LIQUID MIST - Google Patents

Abstract

The utility model relates to spraying devices creating fine dispersion. The nozzle can be used in dust suppression, for example, in mine workings in pneumohydro irrigation systems. The technical result of the proposed utility model is to increase the efficiency of pneumohydro irrigation and dust suppression. A valve nozzle for creating air-fog is proposed, including a housing having a mixing chamber in the center in the form of a matching upper base , air supply channel and water supply channels located on the side wall of the housing, o-rings. A spring is integrated in the housing, which compresses the axially movable core, which has inclined holes for water, which, when the core moves, is aligned with the channel for supplying water.

Description

The utility model relates to spraying devices creating fine dispersion. The nozzle can be used for dust suppression, for example, in mine workings in pneumatic irrigation systems.

Known nozzle (patent No. 139820, application No. 2013154364, priority date 12/06/2013, publication date 04/27/2014). Four nozzle options are proposed. The nozzle housing consists of a nozzle and a shaft aligned coaxially. The nozzle has openings for air or water pressure entry. In the center of the shank there is a channel, which is narrowed at the entrance to the mixing chamber. The mixing chamber in different versions has a different shape: a truncated cone, the shape of the inverse cone on the side of the shank and truncated on the other hand, in the form of cones aligned with the base. The mixing chamber is coupled to the nozzle with a narrow end. The nozzle expands to the exit, in one case it is made in the form of a straight channel.

A disadvantage of the known nozzle is that water leakage is possible, the water supply channel in the nozzle does not overlap during shutdown of the pneumohydro irrigation system. As a result of the leak, the chamber is emptied, which causes failures and a longer time for the system to enter the operating mode.

Known nozzle adopted as a prototype.

The technical result of the proposed utility model is to increase the efficiency of pneumohydroirrigation and dust suppression.

A valve nozzle for generating gas-liquid fog is proposed, comprising a housing having a cone-shaped mixing chamber in the center, an air supply channel and water supply channels located along the side wall of the housing, o-rings.

The difference is that the cones are aligned with the upper base using a detachable connection, a spring is built into the body, compressing the axially movable core, fixed by stop and having water holes, which when moving the core is combined with the water supply channel located in the housing.

The essence of the proposed utility model is shown in FIG. 1 and FIG. 2, where in FIG. 1 shows the valve nozzle inoperative (the water supply channel is closed), and in FIG. 2 - in working condition (the channel for water supply is open).

The nozzle body is shown 1, the movable core 2, the sealing rings 3, the compression spring 4, the channel for supplying water in the housing 6 to the mixing chamber, the hole in the movable core for water 5, the stop for the spring 7.

O-rings 3 are located around the circumference of the nozzle and are designed to increase the sealing of the connection, exclude the possibility of water leakage, and therefore increase the efficiency of pneumohydro irrigation.

An important role in the design of the nozzle is played by the movable core 2. In FIG. 1 shows a valve nozzle inoperative. The spring 4 is unclenched, the core 2 has blocked the water supply channel 6 in the housing, the water hole in the movable core 5 is not aligned with the channel 6. Water does not enter the mixing chamber. The pneumohydroirrigation system does not work. No water consumption. Water leakage is excluded, which confirms the reliability of the used nozzle and the effectiveness of pneumohydro irrigation.

In FIG. 2 shows the working situation. Under the influence of air pressure, the core moves in the longitudinal direction, and the spring is compressed. The spring 4 is compressed, the hole in the movable core 5 is aligned with the channel 6, water under pressure enters the mixing chamber, where it is broken by a stream of air. Moreover, the mixing chamber is made in the form of cones aligned with the upper base, made in the form of a laval nozzle. The connection of the two cones is supposed to be detachable. Using a detachable connection will allow for maintenance and monitoring of the state of the nozzle elements. Non-detachable connections may be used, but this will reduce efficiency in terms of repair and nozzle life. The junction of the two cones may be lower and higher than shown in the drawing. A gas channel of a special profile is formed. Air is supplied to the extended part of the mixing chamber, which narrows along the gas medium, accelerating the gas flow passing through it to supersonic speeds.

The flow of the gas stream is accompanied by a change in the flow rate. Then the gas stream enters the expanded part of the core chamber 2, where it breaks up the liquid stream. Water is supplied to the mixing chamber through an inclined hole 5, which contributes to rapid mixing with the gas stream. Dispersion of the liquid occurs, mixing with air and finely dispersed atomization at the outlet of the nozzle. The design of the valve nozzle allows you to get fine dispersion of the liquid, i.e. small droplets of water.

Considering that the process of collecting dust emanating in the air is quite complicated, the processes and methods for producing a sprayed liquid are important. Each speck of dust must be captured by a drop of water. Those. each speck of dust should meet with a drop of water. Therefore, the more drops of water sprayed, the higher the efficiency of pneumohydroirrigation. In this case, the size of the liquid droplets is important. The drop should have an optimal size for trapping dust. Air uniformly filled with finely divided liquid increases the irrigation efficiency.

In addition, the speed of movement of a large drop of water in air is much lower than the speed of movement of small drops (laws of physics). Therefore, creating fine irrigation, we increase the spraying range, and increase the irrigation area. The efficiency of pneumohydroirrigation and spraying is increased.

The valve nozzle is universal in application. Through the fluid supply channel, it is technically possible to supply a second type of gas, for example, another inhibitor.

The features of the utility model formula “a casing having a mixing chamber in the center in the form of cones aligned with the upper base, an air supply channel and water supply channels located on the side wall of the casing, o-rings”, a movable core with inclined water holes are essential and are located in causal connection with the claimed technical result.

Claims (1)

Valve nozzle for creating gas-liquid fog, including a housing having a cone-shaped mixing chamber in the center, an air supply channel and water supply channels located on the side wall of the housing, o-rings, characterized in that the cones are aligned with the upper base using a detachable connection, a spring is integrated in the housing, compressing the axially movable core fixed by a stop and having water holes that, when the core moves, is aligned with the channel for feeding s, placed in the housing.

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