SU1244319A1 - Hydraulic monitor nozzle - Google Patents

Description

2, Nozzle under item 1, about tl and h and rani and so that it is supplied

The invention relates to the treatment of the surface of products with a stream of liquid.

The purpose of the invention is to increase reliability and simplify the design. .

FIG. 2 shows a nozzle of a hydromonitor, a general view, in FIG. 2 is a view A of FIG. one. .

The nozzle includes an outer 1 and an early 2 nozzle, forming a ring channel 3 to form and accelerate the fluid flow. Thus, the nozzles 1 and 2 are equipped with a nozzle with axial and annular channels with an outlet through the insert 4, for example, from carbide material such as VKb or another resistant to abrasive wear (abrasive resistant material). .

To increase reliability and reduce the cost of processing the surface of products with a liquid jet, the outer surface of the inner nozzle 2 is made stepwise in the form of concentric successively decreasing in diameter from one end to the other three ledges 5, 6 and 7, in one of which, mainly on average b, symmetrical through holes 8 in the annular channel 3 are made with the possibility of their partial (incomplete) overlap of the internal BCtaBKaMH of an abrasion-resistant material.

0

five

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 upper outer pipe 1 or forming the annular channel 3.

The reinforcement insert 9 made of abrasion-resistant material is provided for jetting with an abrasive or a hydro-abrasive and pneumoabrasive jet.

The device works as follows.

The flow of liquid coming from the jetting machine into the nozzle is divided into two streams by the internal nozzle 2, one of which is thrown out of the axial channel through the insert 4 and the other through symmetric channels 8 after the acceleration enters the annular channel 3. In the annular channel 3 one part of the accelerated flow through the gap free from the gap, it is thrown outward, and the other is reflected from the overlap (the inner surface of the outer pipe) and acquires a reverse movement, creating a hydraulic shock and an additional pulsation source the current part of the accelerated flow with a simultaneous increase in its kinetic energy.

As a result of the interaction of the pulsating ring flow with the axial flow, the latter accelerates additionally and. acquires increased kinetic energy. After the treatment is completed, the supply of liquid to the nozzle is turned off; hydro monitor

b id a

Editor. M.Tovtin

Compiled R. Adiatulina,

Tehred O. Sopko Proofreader M. Pojo

Order 3791/34 Circulation 470 Subscription

VNIIPI USSR State Committee

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

Production and printing company, Uzhgorod, Projecto st., 4

FI.2

Claims (2)

HYDRAULIC MONITOR NOZZLE, comprising two coaxially arranged nozzles forming an annular channel between them, characterized in that, in order to increase reliability of operation and simplify the design, the outer surface of the inner nozzle is made stepwise with a decrease in diameter from one ledge to another to the nozzle exit, while through holes are made in the inner pipe with the possibility of overlapping them with the inner surface of the outer pipe. 2, Nozzle according to π. 1, on the basis of abrasion-resistant matte inserts, with the fact that it is equipped with a rial.