SU1776715A1 - Machine for removal of ice and snow from road pavements - Google Patents

Description

The invention relates to mechanical engineering, in particular to machines for cleaning airfield and road surfaces from ice and snow.

The aim of the invention is to improve efficiency by increasing the efficiency of the generated vortex gas flow.

FIG. 1 shows the machine in section; in fig. 2 - the same, top view.

The machine for removing ice and snow from road surfaces contains a generator 1 of a gas flow, for example a turbofan engine, which is mounted on a chassis (not shown) and is connected by means of a receiver 2 through a guide nozzle 3 with a working cylindrical vortex chamber 4. The machine also contains at least one additional cylindrical vortex chamber (two are shown in the figure) 5 and 6, the diameter of which does not exceed 0.5 of the diameter of the working cylindrical chamber 4, while the axes of the chambers are parallel to each other and to the surface to be cleaned. The chambers are made open in the ground part and are connected by adjacent edges. The machine is also equipped with a curved suction nozzle 7 of variable cross-section for removing the removed substance, made in the form of a curved diffuser, which is connected with an outlet to a container 8 for collecting water, which is connected to an outlet

9. In the ground part of the machine, a slotted nozzle 10 is formed, coupled with the working vortex chamber 4, the cross-sectional area of which is equal to the cross-sectional area at the outlet of the gas flow generator 1. At the interface of the additional vortex chamber 5, 6 with the inlet of the gas-jet channel 7, a spring-loaded flap 11 is installed.

1776715A1

The machine for removing ice and snow from road surfaces works as follows.

From the generator 1 of the gas flow through the nozzle 3, a hot working gas stream enters the receiver 2 of the machine, in which an overpressure is created. A gas flow with a temperature of 200 ° C through a slot nozzle 10 flows out at an angle of 45 ° to the surface to be cleaned, melts and cuts ice or snow cover and sequentially directs it into the working vortex cylindrical chamber 4 and subsequent additional cylindrical chambers 5,

6. In this case, the most active vortex is created in the working chamber 4, the side surface of which removes the molten ice or snow and is transferred to the following chambers 5, 6, which bear a double function: firstly, due to the rarefaction in the center of the vortex created in them, the overpass is unloaded from excess pressure , which is created when the mixture of water and gas removed from the surface passes through it and is constantly supplied from the generator 1, secondly, the moisture remaining after the working vortex chamber 4 is removed by the surface of the same vortex. Further, the removed substance (a mixture of water, steam, gas and ice particles) enters the water tank 8, from where part of the water evaporates through the outlet pipe 9 due to its heating by a hot swirl in additional chambers 5, 6, and the rest of the water is drained through the drain hole into bottom of container 8.

The positive effect of using the machine is a significant increase in the efficiency of cleaning road surfaces and airfield runways. So at a machine speed of 9-12 kg / h on ice 1-4 mm thick, the surface is completely cleaned to a wet state, at a machine speed of 3-4 km / h, dry cleaning of ice of the same thickness is ensured. On freshly fallen snow, the same effect is achieved at a vehicle speed of 25-30 and 3-5 km / h, respectively. The effect is provided due to a more rational use of the properties of the vortices created in the working and additional chambers of the machine, and such a constructive solution makes it possible to significantly simplify the machine, eliminating many structural elements that in the prototype serve to heat the gas flow, as a result of which the machine has high operational reliability.

Claims (5)

Claim 1. A machine for removing ice and snow from road surfaces, containing a generator of a gas flow placed on a chassis, a casing connected with it by a guide nozzle, installed above the surface to be treated, and a device for removing water, including a curved suction nozzle and a water tank, which is different the fact that, in order to increase efficiency by increasing the efficiency of the generated vortex gas flow, the casing is formed by cylindrical chambers open in the lower part, the adjacent edges of which are interconnected, and the axes are parallel to each other and the treated surface, the specified nozzle with the leading edge of the first cylindrical chamber is formed the slot nozzle, and the suction nozzle is mated with the last cylindrical chamber. 2. The machine according to claim 1, based on the fact that a receiver is located between the guide nozzle and the slotted nozzle. 3. The machine according to claim 1, with the fact that the suction nozzle is made in the form of a diffuser. 4. The machine according to claim 1, wherein the area of the slotted nozzle is equal to the cross-sectional area at the outlet of the gas flow generator. 5. The machine according to claim 1, characterized in that the diameter of each subsequent cylindrical chamber is more than half the diameter of the first one.