SU1213220A1 - Foam generator - Google Patents

Description

The invention relates to the mining industry and can be used to control dust in other industrial areas in various technological processes.

The purpose of the invention is to increase the effectiveness of dust suppression by increasing the degree of foam electrification.

FIG. 1 shows a foam generator, a general view; in fig. 2 is a section A-A in FIG. .

The foam generator comprises a housing I consisting of a metal cone 2, made, for example, of aluminum, the surface of which is covered with insulating material 3 (vinklplast) from all sides, a sprayer 4 with a supply of a frother solution and a supply nozzle 6 for supplying it air, conical foam nylon mesh 7, facing the top of the sprayer 4, and a flat leveling nylon mesh 8 installed at the base of the conical mesh 7 at the outlet of the foam generator I2I32202

It helps to reduce the loss of foaming agent solution, equalize and stabilize the flow. Stumps The angle at the top of the tapered screen is equal to the opening angle of the spray cone.

5 and the corner at the top of the hull.

The foam generator works as follows. The metallic cone 2 of the housing 1 is supplied with a voltage from the power source 10 through the insulated input 9. Inside

The 10 body appears an electrostatic field, the intensity of which is maximal at the surface of the grid 7. The air flow through the nozzle 6 ejects the solution of the foam agent from the pat15 to the sprayer 4 to the sprayer 4. created by a metal cone 2. When moving in an electrostatic field to the grid 7, the solution aerosol

20 of the foaming agent is electrified and covers with a uniform layer of the mesh of the mesh 7. A stream of air from the sprayer 4 blows foam bubbles 7 on the back of the mesh. In the process of pricing occurs interera. Metal cone 2 through insulated electrification of growing bubbles

Input 9 is connected to power supply 10. The conical shape of the housing 1 ensures an even distribution of the air flow within the entire volume of the foam generator, which improves the foaming conditions of E. on the static field to the flat grid 8, where

The distance from the top of the cone grid 7 to the sprayer 4 and from the surface of the grid 7 to the inner surface of the housing 1 is 10-12 mm. The intensity of the electrostatic field created by the metal i cone 2 is maximum at the walls of the housing 1 in the area of the grid 7. The installation of the flat grid 8 at the base of the cone formed by the foaming grid 7 allows 35

alignment and stabilization of the electrostatic foam foam occurs. In the process of foaming and moving to the grid, the foam is treated electrically, and electric charge is induced and accumulated on the surface of the bubbles. The flow of electrically charged foam that has been electrically processed is directed from the foam generator to the source of dust extraction.

foam, as the surface of the grid 7 is located in the zone of maximum intensity. Electrocharged foam bubbles, carried along by the air flow, move in electrical

leveling and stabilization of the flow of electrostatic foam occurs. In the process of foaming and moving to the grid 8, the foam is electrically processed, and an electric charge is induced and accumulated on the surface of the bubbles.

Editor A. Kozoriz Order 764A15

Compiled by A. Gubaylovsky

Tekhred A, Babinets Corrector A. Tsk

Circulation 436 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

FOAM GENERATOR, comprising a housing, a flat foam-forming mesh, a spray of a foam-forming solution and a power source, characterized in that, in order to increase the efficiency of dust suppression by increasing the degree of electrification of the foam, it is equipped with a conical mesh, at the base of which a flat foam-forming mesh is fixed, the foam generator housing is made in in the form of a metal cone connected to the power source, the surface of which is covered with insulating material, while the foam sprayer is installed in bus of said cone, and the conical surface of the grid is placed with clearance inside the housing. _β