Water mist nozzle

Abstract

The utility model relates to a water mist nozzle, which adopts conical rotational flow atomization, a filter screen and an atomizing core socket positioning structure, and is cylindrical in appearance; the problems of installation deviation, large head loss and thick fog drops are solved, and the utility model belongs to the field of fire safety. The atomizer is mainly composed of a welding head, a filter screen, an atomizing core, a body, a sealing gasket and a dustproof plug. The welding head is annularly welded on a water supply main pipe, the sealing gasket is sleeved at the root of a straight thread of the body, the atomizing core is inserted into the body, the filter screen is pressed at an inlet of the body in a rolling rivet manner, and the dustproof plug is nested at an outlet side of the body in an interference manner; the body and the welding head are screwed through straight threads and are sealed by a sealing gasket; during working, a fire-fighting water source enters the atomizing core through the water supply main pipe, the joint and the filter screen, is atomized by rotational flow and central jet flow of the atomizing core, and is sprayed out in a solid conical shape through the nozzle for fire extinguishing and cooling; the method has wide application prospects in petrifaction, transformer substations and military tools.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of in water spray fire extinguishing system, adopt conical cyclone atomization, filter screen and atomizing core socket positioning structure, appearance is cylindrical;Droplet group diameter Dv 0.99 340um, spray angle: ≥120 °, belong to fire safety field. BACKGROUND

[0002] Current water spray head, the connection of welding head and water supply pipe has no positioning, and is often installed off-center;Filter screen protrudes into the inner section of water supply pipe, and the water inlet holes of filter screen are uniformly arranged in multiple rows of small holes, causing water flow to collide with each other when entering, resulting in large hydraulic loss;Using conical pipe threads and sealing glue sealing, it is not resistant to high temperature in fire scene and summer sun baking;The existing water spray head is installed off-center, has large hydraulic loss, and the droplets are coarse and not resistant to high temperature sealing;It cannot meet the fire safety needs of petrochemical industry, substation, metallurgy and military equipment. SUMMARY

[0003] To solve the problems of existing water spray head installation off-center, large hydraulic loss and not resistant to high temperature in fire scene, the utility model provides a water spray head, which is composed of a welding head (1), a sealing gasket (2), a body (3), a dust plug (4), an atomizing core (5) and a filter screen (6);The welding head is ring-welded on the water supply pipe, the sealing gasket is sleeved on the straight thread root of the body, the atomizing core is inserted into the body, the filter screen is rolled and riveted tightly at the inlet of the body, and the dust plug is nested on the outlet side of the body;During operation, the fire water source enters the atomizing core through the water supply pipe, the welding head and the filter screen, and is atomized by the rotational flow and central jet flow of the atomizing core, and is sprayed out in solid conical shape through the nozzle for fire extinguishing and cooling.

[0004] The utility model is implemented as follows: the water spray head is composed of a welding head, a filter screen, an atomizing core, a body, a sealing gasket and a dust plug;The welding head is ring-welded on the water supply pipe, the sealing gasket is sleeved on the straight thread root of the body, the atomizing core is inserted into the body, the filter screen is rolled and riveted tightly at the inlet of the body, and the dust plug is nested on the outlet side of the body;The body and the welding head are tightened by straight thread, and are sealed by the sealing gasket;During operation, the fire water source enters the atomizing core through the water supply pipe, the welding head and the filter screen, and is atomized by the rotational flow and central jet flow of the atomizing core, and is sprayed out in solid conical shape through the nozzle for fire extinguishing and cooling.

[0005] The utility model discloses a beneficial effect is: welding head inserts water supply main pipe location, avoids the installation deviation, filter screen does not protrude the inner flow channel section of water supply main pipe, does not block the water flow, and the water inlet each small hole of filter screen is staggered, avoids the water flow collision loss, compared with traditional cylindrical atomizing core, designs conical atomizing core, and the water flow is compressed while swirling atomization, improves the water flow rotation speed, and atomization is more sufficient, the water droplet diameter of this water mist nozzle is improved by 35%, and the water pressure of the existing water mist nozzle is improved by 23%, in engineering application, a water supply main pipe installs dozens of water mist nozzles, adopts the utility model, reduces the lift of fire pump, power, and saves the electric energy consumption by 25%, the atomizing core is composed of two symmetrical inclined grooves and three round holes, and the atomizing is uniform and has the kinetic energy of forward injection, adopts straight thread, high-temperature-resistant PTFE material sealing gasket, and it is convenient to clean and maintain the atomizing core, the traditional conical pipe thread is connected with sealing glue, and it is difficult to disassemble, is exposed to the sunlight high temperature in summer, and the sealing glue is oxidized, aged and often fails to leak, the high-temperature applicability and safety of the fire tank are poor, the two rectangular protrusions of filter screen are inserted into the groove of atomizing core, and the filter screen is rolled and riveted and pressed in the body entrance, the atomizing core is also fastened when fixing the filter screen, realizes the automation production, improves the assembly efficiency of water mist nozzle and reduces the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0006] The utility model is further explained in connection with the drawings and examples.

[0007] Figure 1 It is the main section view of the utility model's structure.

[0008] Figure 2 It is the main view of the utility model's atomizing core.

[0009] Figure 3 It is the top view of the utility model's atomizing core.

[0010] Figure 4 It is the section view of the utility model's filter screen.

[0011] Figure 5 It is the top view of the utility model's filter screen.

[0012] Figure 6 It is the section view of the utility model's welding head.

[0013] The utility model solves the technical scheme that its technical problem adopts:

[0014] The water mist nozzle is assembled by a welding head, a filter screen, an atomizing core, a body, a sealing gasket and a dustproof plug, and is provided with a water inlet b, a mixing flow cavity c and a nozzle d. DETAILED DESCRIPTION

[0015] The water mist nozzle adopts conical cyclone atomization and a filter screen and atomizing core socket positioning structure, and has a cylindrical shape. The water mist nozzle is assembled by a welding head, a filter screen, an atomizing core, a body, a sealing gasket and a dustproof plug, and is provided with a water inlet b, a mixing flow cavity c and a nozzle d. 0.99 460um to Dv 0.99340um, the mist is more fine, the heat absorption and cooling efficiency is enhanced;Two rectangular protrusions of the filter screen are inserted into the grooves of the atomizing core, the filter screen is rolled and riveted to the body inlet, the rolling and riveting direction is consistent with the eccentric moment of the atomizing core, the atomizing core is fastened while the filter screen is fixed, automatic production is realized, and the assembly efficiency is greatly improved;At present, the atomizing core of the water mist nozzle is cylindrical, three points on the circumference are manually punched and riveted, the efficiency is low, and there is residual deformation in the inner flow channel;The traditional water mist nozzle is fastened by a conical pipe thread and sealing glue, it is difficult to disassemble and maintain the atomizing core, the sealing glue is exposed to the sun in summer and loses sealing effect and leaks, the high temperature applicability and safety of the fire tank are poor;The welding head is composed of a positioning convex circle, a shaft shoulder and a cylinder;The positioning convex circle and the shaft shoulder are milled with a circular arc, the circular arc of the positioning convex circle is the same as the inner diameter of the water supply pipe, the convex height of the positioning convex circle is less than the wall thickness of the water supply pipe, and the water flow is not blocked, and the circular arc of the shaft shoulder is the same as the outer diameter of the water supply pipe;A straight thread is processed in the inner hole, and a shoulder is processed at the bottom.

[0016] 1) Material: the welding head, the body and the filter screen are made of low-carbon stainless steel, the atomizing core is made of silicon brass, the sealing gasket and the dust plug are made of semi-hard PTFE material;High strength, high and low temperature resistance, long service life.

[0017] 2) Droplet group diameter: Dv 0.99 340um.

[0018] 3) Spray angle: ≥120°.

[0019] 4) Working pressure range: 0.15-1.2MPa.

[0020] 5) Dust plug shedding pressure: 0.1MPa.

[0021] The utility model has wide application prospect in petrochemical industry, power transformation and distribution station, metallurgy and military industry.

Claims

1. A water mist sprinkler characterized by The water mist nozzle is cylindrical in shape, and is provided with a conical cyclone atomizer, a filter screen and a positioning structure of the atomizer and the filter screen. The water mist nozzle comprises a welding head, a sealing gasket, a body, a dustproof plug, an atomizer and a filter screen. The welding head is ring-welded to a water supply pipe, the sealing gasket is sleeved on the straight thread root of the body, the atomizer is inserted into the body, the filter screen is rolled and riveted to the inlet of the body, and the dustproof plug is nested on the outlet side of the body. The body and the welding head are screwed by a straight thread, and are sealed by the sealing gasket. During operation, fire-fighting water source enters the atomizer through the water supply pipe, the welding head and the filter screen, is atomized by the atomizer, and is sprayed out of the nozzle in the form of a solid conical spray for fire extinguishing and cooling.

2. The water mist sprinkler head of claim 1 wherein The atomizer is conical in shape, and two symmetrical inclined grooves are formed on the outer cylindrical surface of the atomizer. The inclined grooves are wide at the outside and narrow at the inside, and a straight hole is formed in the center. Two straight holes are symmetrically formed on the vertical line connecting the two inclined grooves. Two recesses are formed on the top of the conical atomizer.

3. The water mist sprinkler head of claim 1 wherein The welding head is composed of a positioning convex circle, a shaft shoulder and a cylinder. The positioning convex circle and the shaft shoulder are milled with a circular arc. A straight thread is formed in the inner hole, and a shoulder is formed at the bottom end.

4. The water mist nozzle according to claim 1, wherein the filter screen is provided with a straight hole on the top circular arc surface, and is provided with inclined holes on the intersecting side surface of the cylinder. Two rectangular bosses are designed on the bottom surface of the cylinder. ​

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