CN202289279U

CN202289279U - Water mist nozzle

Info

Publication number: CN202289279U
Application number: CN201120302094XU
Authority: CN
Inventors: 俞伯良
Original assignee: ZHEJIANG GANGLONG FIREFIGHTING MACHINERY CO Ltd
Current assignee: ZHEJIANG GANGLONG FIREFIGHTING MACHINERY CO Ltd
Priority date: 2011-08-19
Filing date: 2011-08-19
Publication date: 2012-07-04
Anticipated expiration: 2021-08-19

Abstract

The utility model relates to a water mist nozzle. The water mist nozzle is characterized in that the water mist nozzle takes the shape of a hexagonal prism, a conical filter screen is arranged at a water inlet and is pressed by using a locking buckle, an O-shaped sealing ring is arranged at the upper part of a mandrel, a spring is sheathed at the lower side of the mandrel, the mandrel is assembled between a nozzle body and a nozzle, and the water mist nozzle is pushed to be opened under the pressure of incoming water and is closed and sealed by means of spring force. The water mist nozzle, which breaks up water into mist drops with 300mum-500mum under the working pressure and sprays water according to a preset pulverization angle, has the effective spraying distance of five meters, belongs to the field of fire protection and solves the problems of water flowing and dropping and short effective spraying distance of the conventional water mist nozzle in the initial and finishing sections of spraying. The water mist nozzle has the capability of preventing harmful gases, insects and dust from entering the interiors of pipelines and valves. The water mist nozzle is composed of the mandrel, the nozzle body, the spring, the nozzle, the O-shaped sealing ring, a red copper gasket, the conical filter screen and the locking buckle and has wide application prospect in electric power, chemical engineering, metallurgy, highway tunnels, wine cellars and the like.

Description

Waterfog head

Technical field

The present invention relates to a kind of fire protection sector that is used for, profile is hexagon prism; When inlet pressure reaches predetermined value, just open atomizing and spurt, the droplet that current is decomposed into 300um-500um spurts by predetermined atomizing angle, when stopping to spurt, can close rapidly, stops to drip the water stain infringement of dropping down; Effectively jet length reaches 5m, belongs to fire-fighting fire extinguishing, control fire, fire prevention field.

Background technology

Existing GB GB5135.5-2003 waterfog head does not have the constant pressure turn on atomizing to spurt and the ability that stops to close rapidly sealing; Spurting initially; The hydraulic pressure at conveyance conduit and shower nozzle place is not set up as yet; After spurting end, existing waterfog head will continue to drop down water, drain the surplus water in the pipe network; Cause water damage, such waterfog head can not satisfy the application requirements of power transformer, cable tunnel, cable interlayer, diesel generating set etc.

Waterfog head outlet of today is for open in usual, and dust storm, insect and corrosivity pernicious gas are prone to invade shower nozzle, pipe network, valve, and obstruction, corrosion-damaged lifetime of system influence the atomized spray effect simultaneously.

The atomizing core of current waterfog head is the swash plate shape mostly, and the flow resistance loss is bigger, and under low pressure atomizing angle is bigger than normal, and under high pressure atomizing angle is less than normal, and it is insufficient, inhomogeneous, unstable to atomize, and effectively jet length is merely 2.5m.

Existing waterfog head does not have spring pretension hermetically-sealed construction, and water outlet is dropped down water for dripping under beginning/end and the low hydraulic pressure, continuous direct current water is vowed spraying, and is prone to that generation is leaked electricity, shock hazard.

The unassembled built-in filter screen of waterfog head of the overwhelming majority, the impurity of entering can stop up the atomizing service behaviour that hinders mandrel and nozzle, and impurity under high-velocity flow towards penetrating with the infringement protected object.

The utility model content

Spraying electric leakage, the shock hazard that dripping under the whole story and the low hydraulic pressure dropped down water, the continuous water of direct current is vowed and produce in order to solve conventional waterfog head; Mandrel, sprayer body, nozzle are subject to insect, dust storm blocking problem.The utility model provides a kind of waterfog head, and profile is hexagon prism; Form by sprayer body (4), mandrel (1), nozzle (5), O RunddichtringO (2), spring (3), tapered filter screen (6), red copper pad (7), tight locking button (8); Water inlet is provided with tapered filter screen, and filter screen is compressed by tight locking button, mandrel top cover O RunddichtringO, and downside sleeve spring, mandrel are assemblied between sprayer body, the nozzle; Promote to open by intake pressure, close sealing by spring force; In working pressure range, current are decomposed into the shower nozzle that the 300um-500um droplet sprays by predetermined atomization angle, its effective jet length reaches 5 meters.

The present invention is achieved in that waterfog head is made up of sprayer body (4), mandrel (1), nozzle (5), O RunddichtringO (2), spring (3), tapered filter screen (6), red copper pad (7), tight locking button (8).Sealing state at ordinary times keeps shut under initial tension of spring; When beginning to spray, because pipe network water pressure is not increased to the predetermined work force value, waterfog head is in closes sealing state; When intake pressure reaches scheduled pressure value; Current promote spring and open; Transfer middle part water outlet, the mutual mixed flow effect atomizing of three tangential holes that are uniformly distributed with of nozzle through four inlet openings of mandrel to, current are decomposed into the 300um-500um droplet spray by predetermined atomization angle; Spurt when finishing, when the shower nozzle intake pressure is lower than scheduled pressure value, under spring action, close automatically, avoided the surplus water in the system pipe network to drop down, drip phenomenon from the shower nozzle long period.

The invention has the beneficial effects as follows: eliminated at sprinkling beginning/end and reached following of low hydraulic pressure, dropped down water and direct current water arrow and the electric leakage/shock hazard of generation; Improve the anti-water inlet of shower nozzle impurity and stopped up, hindered the atomized spray ability; Avoided the hidden danger of the infringement protected object under big water impact of the impurity in the water source; Shower nozzle atomizing, the long-range performance of spurting have been strengthened; Stopped mandrel, sprayer body, nozzle obstruction, receive etching problem.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is a section of structure of the present invention.

Fig. 2 is an outline drawing of the present invention.

Fig. 3 is the vital part among the present invention: mandrel figure.

Fig. 4 is the vital part among the present invention: nozzle figure.

Sprayer body: inlet opening and abdominal cavity end face are perpendicular, and it joins rounding, and this fillet contacts with O RunddichtringO on the mandrel and makes shower nozzle keep sealing; Outlet side is processed with straight thread, is provided with O RunddichtringO right angle groove, is connected sealing with nozzle.

Mandrel: head is coniform, and circular cone is provided with O RunddichtringO arc groove at the back; Transfer the middle part water outlet to by four inlet openings of circumference, water outlet is the circular cone diversion mode; Four inlet opening cylindricals are processed with into water circulation groove.

Nozzle: top is processed with " ten " font intake chamber, is processed with the water inlet circulation groove of intake chamber with the degree of depth; The middle part has three to be uniformly distributed with the inlet opening and inner chamber is tangent, and water outlet circular arc and plane intersection are provided with the cutout cutting, have reduced the adhesion effect of water smoke and nozzle cylindrical, reaches droplet and hightails and spurt.

Tapered filter screen: built-in structure, adopt red copper pad and tight locking button fastening, circulation area is 3 times of flat screen pack of identical order number, identical bore, and anti-high-pressure high-flow water impact is strong, and flow resistance loses little.Built-in structure makes shower nozzle appearance and size littler than external dome formula filter screen, has also avoided the current stopping effect of external dome filter screen to looped pipeline.

The present invention solves the technical scheme that its technical problem takes:

Press core component-mandrel, the nozzle of this shower nozzle of hydrodynamics three dimensional design; Adopted spring pretension stem seal structure through design in the sprayer body inner passage; The mandrel circular cone is provided with O RunddichtringO arc groove at the back, transfers the middle part water outlet to by four inlet openings of circumference, and its water outlet is a pyramid type; Nozzle is established four intake chambers, is processed with the water inlet circulation groove of intake chamber with the degree of depth; The middle part has three to be uniformly distributed with the inlet opening and inner chamber is tangent, the water outlet circular arc is provided with cutting, has reduced water smoke and has dripped the adhesion effect with the nozzle cylindrical.Tangential hole aperture that mandrel water outlet duct and three at nozzle are uniformly distributed with and jet expansion diameter, circular arc become certain interactive, restriction relation.

The specific embodiment

Waterfog head is made up of sprayer body, nozzle, mandrel, spring, O RunddichtringO, tapered filter screen, red copper pad, tight locking button.Profile is hexagon prism; Water inlet is provided with tapered filter screen, and filter screen is compressed by tight locking button, mandrel top cover O RunddichtringO, and downside sleeve spring, mandrel are assemblied between sprayer body, the nozzle; Promote to open by intake pressure, close sealing by spring force; Mandrel contacts the O RunddichtringO under the thrust of spring with sprayer body abdominal cavity end face at ordinary times, waterfog head is remained in close sealing state.When beginning to spray, because pipe network water pressure is not increased to the predetermined work force value, shower nozzle is in all the time closes sealing state; When intake pressure reached scheduled pressure value, current promoted spring and open, and transferred middle part water outlet, the mutual mixed flow effect atomizing of three tangential holes that are uniformly distributed with of nozzle ejection to through four inlet openings of mandrel.Spurt when finishing, when intake pressure is lower than scheduled pressure value, close automatically, avoided the surplus water in the system pipe network to drop down, drip phenomenon from the shower nozzle long period.Tangential, three holes influent stream vortex that is uniformly distributed with in the nozzle and mandrel direct current water lose abundant mixed flow atomizing, are the stabilized uniform atomization angle to jet hole and are injected into distance outside 5 meters.

1) rated operating pressure: 0.35MPa;

2) Applicable media: water, AFFF mixed liquor;

3) working pressure range: 0.28-0.8MPa.Minimum operating pressure is lower than similar, and working pressure range is wide, and adaptability is strong;

4) opening pressure: 0.2MPa; Closing presure: 0.15MPa;

5) mounting means: upright downwards, level, oblique installation, installing space is 2.5m, jet length can reach 5 meters, atomizing evenly, adaptability of the present invention is strong;

6) atomization angle: 60 °, 90 °, 120 °;

7) metered flow: 30L/min, 50L/min, 80L/min, 100L/min, 160L/min, 200L/min;

8) be applicable to solid fire, oil fire and electrical fire.

Claims

1. a fire demand water spray painting head is characterized in that profile is hexagon prism; Water inlet is provided with tapered filter screen, and filter screen is compressed by tight locking button, mandrel top cover O RunddichtringO, and downside sleeve spring, mandrel are assemblied between sprayer body, the nozzle; Promote to open by intake pressure, close sealing by spring force; In working pressure range, current are decomposed into the shower nozzle that the 300um-500um droplet sprays by predetermined atomization angle, its effective jet length reaches 5 meters; Waterfog head by: sprayer body (4), mandrel (1), nozzle (5), O RunddichtringO (2), spring (3), tapered filter screen (6), red copper pad (7), tight locking button (8) are formed.

2. waterfog head according to claim 1 is characterized in that the mandrel head is coniform, and circular cone is provided with O RunddichtringO arc groove at the back; Transfer the middle part water outlet to by 4 inlet openings of circumference, its water outlet is a pyramid type; 4 inlet opening cylindricals are processed with into water circulation groove.

3. waterfog head according to claim 1 is characterized in that sprayer body inlet opening and abdominal cavity end face are perpendicular, and it joins rounding, and outlet side is processed with straight thread, is provided with O RunddichtringO right angle groove.

4. waterfog head according to claim 1 is characterized in that nozzle top is processed with " ten " font intake chamber, and the middle part has three to be uniformly distributed with the inlet opening and inner chamber is tangent, and water outlet circular arc and plane intersection are provided with the cutout cutting.