CN2445824Y

CN2445824Y - Spray gun accelerate by induced air

Info

Publication number: CN2445824Y
Application number: CN 00248185
Authority: CN
Inventors: 牛喜华; 李家荣; 韩向红; 李宝成
Original assignee: 牛喜华
Priority date: 2000-08-23
Filing date: 2000-08-23
Publication date: 2001-09-05
Anticipated expiration: 2010-08-23

Abstract

The utility model discloses an air inducing acceleration spray gun used in fire fighting fire extinction. The middle part of an injection pipe is provided with a row of vent holes which are evenly distributed radially along the pipe wall. By using the vent holes as the boundary, a water supply inner sleeve, the back part of which forms a conical hole, is inlaid at the back part inside the injection pipe, and an acceleration inner sleeve is inlaid at the front part inside the injection pipe. The connection end of the water supply inner sleeve and the acceleration inner sleeve of the injection pipe forms radial ring grooves corresponding to the vent holes. A step, the hole diameter of the water supply inner sleeve of the connection end of which is less than the hole diameter of the acceleration inner sleeve, is formed. The current firing range of the spray gun can be raised. The utility model has the advantages that simple structure and easy installation.

Description

Air inducing quickens spray gun

The utility model relates to the injection apparatus of fire-fighting fire extinguishing, is that a kind of air inducing quickens spray gun specifically.

Existing fire extinguishing water spray gun mostly is the nozzle structure that internal taper hole is set greatly, and the range of its current depends on the pressure of supply channel.

The utility model purpose is the problem that is difficult to improve at existing fire extinguishing spray gun range, but and provides a kind of air inducing of increased water flow range to quicken spray gun.

The technical scheme that realizes above-mentioned purpose is: a kind of air inducing quickens spray gun, has to offer the jet pipe of a row along tube wall radial equipartition wind hole at the middle part; With the wind hole is that insert rear portion in the jet pipe at its rear portion, boundary is in the feedwater of conical bore and overlaps cover in anterior insert quickens; In its feedwater cover with quicken in the cover end that joins form radially annular groove corresponding to the wind hole, and constitute in the end feedwater of joining the cover aperture less than the ladder in cover aperture in quickening.

Being threaded on the feed pipe by jet pipe rear end when this air inducing quickens the spray gun use, keep-up pressure to the front end of the interior cover of feedwater by the straight hole section after the taper hole section supercharging of cover in the feedwater of water under high pressure process, because its front end aperture is less than the aperture of overlapping in the acceleration of joining and form the ladder sudden change, current are in the forward momentum effect of being reduced pressure during by annular groove radially, cover in the air that jet pipe is outer goes into to quicken by the wind pore area, thereby make the flow velocity of water increase the increased water flow range.

Accompanying drawing 1 quickens spray gun master cutaway view for this air inducing;

Fig. 2 is the A-A profile of Fig. 1.

The utility model is described in further detail below in conjunction with drawings and Examples:

Provide as accompanying drawing, this air inducing quickens spray gun to have connecting thread is radially evenly offered a vent 3 along tube wall at the middle part jet pipe 1 is set in the rear end.Being the boundary with the wind hole in jet pipe 1 overlaps 2, cover 4 in anterior insert quickens in insert rear portion, rear portion is the feedwater of conical bore.In its feedwater cover 2 with quicken in cover 4 end that joins form radially annular groove corresponding to wind hole 3, and constitute in the end feedwater of joining the cover aperture less than the ladder in cover aperture in quickening.

This air inducing quickens spray gun and also is applicable to water mist dust fall.

Claims

1, a kind of air inducing quickens spray gun, has jet pipe (1), it is characterized in that: offer the wind hole (3) of a row along the tube wall radial equipartition at the middle part of jet pipe (1); With the wind hole is that the boundary is installed with the rear portion and is cover (2) in the feedwater of conical bore, cover (4) in the front portion is installed with and quickens in the jet pipe at its rear portion; In its feedwater cover (2) with quicken in cover (4) end that joins form radially annular groove corresponding to wind hole (3), and constitute in the end feedwater of joining the cover aperture less than the ladder in cover aperture in quickening.