CN210711620U

CN210711620U - Hammer-shaped spray gun

Info

Publication number: CN210711620U
Application number: CN201921833601.5U
Authority: CN
Inventors: 裴宗保; 戚兆刚; 冯继东; 张剑华
Original assignee: Tangshan Zehua Engineering Technology Co Ltd
Current assignee: Tangshan Zehua Engineering Technology Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-06-09
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a hammer-shaped spray gun, which comprises a gun core and a spiral guide vane, wherein the gun core comprises an upper internal channel, a middle throat section and an air chamber of an outlet expansion section, the internal channel, the throat section and the air chamber are mutually communicated, the spiral guide vane is arranged at the front section of the air chamber, cooling pipes are arranged at the two sides of the gun core, and the cooling pipes are connected on an annular fixing frame; the peripheries of the gun core, the cooling pipe and the annular fixing frame are poured into a hammer shape through refractory materials; and the air flow or the material enters the inner channel and is sprayed into the molten iron in an oblique line along the spiral guide vane through the throat section and the air chamber. This device simple structure, convenient operation, the design of Laval larynx and spiral guide vane makes the gas flow velocity increase, increases the gas impact force, reduces the spray gun depth of insertion, and simultaneously, rotatory air current can strengthen stirring ability, increases the quick mixing of molten iron flow, does benefit to the discharge of inclusion.

Description

Hammer-shaped spray gun

Technical Field

The utility model relates to a steel, casting industry jetting smelt technical field, especially relate to a hammer-shaped spray gun.

Background

The external refining of molten iron or molten steel refining adopts a conventional spray gun, the molten iron needs to be blown into a molten pool from the top and the wall of the furnace during operation, the molten iron is mostly in a static state during operation, the stirring effect on the molten iron is poor, and impurities are not easy to float upwards.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hammer-shaped spray gun solves prior art spray gun stirring effect poor, the difficult problem of come-up of inclusion.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model relates to a hammer-shaped spray gun, including rifle core and spiral guide vane, the rifle core includes the air chamber of upper internal passage, middle larynx section and export expansion section, internal passage, larynx section and air chamber communicate each other, the spiral guide vane is installed in the anterior segment of air chamber, the both sides of rifle core are provided with the cooling tube, the cooling tube is connected on annular mount; the peripheries of the gun core, the cooling pipe and the annular fixing frame are poured into a hammer shape through refractory materials; and the air flow or the material enters the inner channel and is sprayed into the molten iron in an oblique line along the spiral guide vane through the throat section and the air chamber.

Furthermore, a connecting flange is welded at the tail of the gun core and is connected with a blowing pipeline.

Still further, the inlet and outlet of the cooling pipe are connected with an air cooling system.

Still further, the gun core is made of a carbon steel thick-wall seamless steel tube.

Still further, anchor hooks are evenly arranged on the cooling pipe, and a steel wire mesh for casting the stable refractory material is connected to the anchor hooks.

Still further, the spiral guide vane is provided with a plurality of, and is the circumference equipartition and is in on the inner wall of air chamber.

Compared with the prior art, the utility model discloses a beneficial technological effect:

the utility model relates to a novel hammer-shaped spray gun device, which comprises a gun core and spiral guide vanes, wherein the gun core comprises an upper internal channel, a middle throat section and an air chamber of an outlet expansion section, the upper part and the lower part of the air chamber are mutually communicated, the internal channel is in transition connection with the throat section through a contraction section to form a laval throat structure, the spiral guide vanes are arranged at the front part of the air chamber, cooling pipes are arranged at the two sides of the gun core, and the cooling pipes are connected on an annular fixing frame; the peripheries of the gun core, the cooling pipe and the annular fixing frame are poured into a hammer shape through refractory materials for positioning. This device simple structure, convenient operation, the design of Laval larynx and spiral guide vane makes the gas flow velocity increase, increases the gas impact force, reduces the spray gun depth of insertion, and simultaneously, rotatory air current can strengthen stirring ability, increases the quick mixing of molten iron flow, does benefit to the discharge of inclusion.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

FIG. 1 is a schematic view of a hammer-shaped spray gun according to the present invention; (interior perspective)

FIG. 2 is a top view of the hammer-shaped spray gun of the present invention;

fig. 3 is a schematic view of another embodiment of the spiral guide vane of the present invention;

description of reference numerals: 1. a throat section; 2. an air chamber; 3. a cooling tube; 4. an annular fixing frame; 5. an internal channel; 6. a helical guide vane; 7. a refractory material.

Detailed Description

As shown in fig. 1-3, a hammer-shaped spray gun comprises a gun core and a spiral guide vane 6, wherein the gun core comprises an upper internal channel 5, a middle throat section 1 and an outlet expansion section air chamber 2, the internal channel 5, the throat section 1 and the air chamber 2 are communicated with each other, the internal channel is in transition connection with the throat section through a contraction section to form a laval throat structure, the spiral guide vane 6 is installed at the front section of the air chamber 2, cooling pipes 3 are arranged on two sides of the gun core, and the cooling pipes 3 are connected to an annular fixing frame 4; the peripheries of the gun core, the cooling pipe 3 and the annular fixing frame 4 are poured into a hammer shape through a refractory material 7; and the air flow or the material enters the inner channel 5 and is sprayed into the molten iron in an oblique line along the spiral guide vane 6 through the throat section 1 and the air chamber 2. The spiral guide vanes 6 are arranged in plurality and are circumferentially and uniformly distributed on the inner wall of the air chamber 2, and the spiral guide vanes 6 are specifically fixedly connected to the inner side wall of the air chamber 2 and can be provided with three, four, five, six or more so as to realize the guiding effect on the blown air flow; fig. 2 shows a structure of three spiral guide vanes, and fig. 3 shows a structure of six spiral guide vanes.

Specifically, a connecting flange is welded at the tail of the gun core and is connected with a blowing pipeline. The inlet and outlet of the cooling pipe 3 are connected with an air cooling system, the gun core is protected through cooling, and the service life is prolonged. The gun core is made of a carbon steel thick-wall seamless steel pipe, and the spiral guide vane is made of high-temperature-resistant and scouring-resistant alloy materials. The cooling pipe 3 is evenly provided with anchor hooks, and the anchor hooks are connected with a steel wire mesh for casting the stable refractory material.

The length of the throat section 1 of the gun core is 1-2 times of the diameter of the throat, the air flow is stabilized, and the gun core is suitable for blowing powdery materials (such as CaO and the like) with the granularity of 0.1-1 mm; the horizontal included angle that the spray gun export was the spiral guide vane in the air chamber sets up to 0 ~ 85, and the actual result of use of length of spiral guide vane 6 adjusts, and inboard one end stretches into rifle core throat section 1 under as far as possible, and the air current is through this spiral guide vane after, according to its inclination whirl blowout, increase impact angle, area, rotatory air current stirring molten iron, and the molten iron produces the whirl motion under the effect of air current to reach the stirring effect of ideal.

The action process of the utility model is as follows:

firstly, the head of the hammer-shaped spray gun is hammer-shaped, the surface of the hammer-shaped spray gun is smooth and has no edges and corners, the spray gun plays a role of stabilizing the spray gun when placed in molten iron, and the tail of the spray gun is communicated with a spraying pipeline through a connecting flange; the air flow or the material enters the inner channel 5, passes through the contraction section and the throat section 1, enters the air chamber 2, and is finally sprayed into the molten iron in an oblique line by the blocking of the spiral guide vane 6 to form a rotational flow.

The design of spiral guide vane makes the gaseous velocity of flow increase, increases gaseous impact force, can reduce and reduce the spray gun depth of insertion, and simultaneously, rotatory air current can strengthen stirring ability for the molten iron mixing does benefit to the discharge of inclusion.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. A hammer spray gun, characterized in that: the air-cooling type air-cooling gun comprises a gun core and spiral guide vanes (6), wherein the gun core comprises an upper internal passage (5), a middle throat section (1) and an air chamber (2) with an outlet expansion section, the internal passage (5), the throat section (1) and the air chamber (2) are communicated with each other, the spiral guide vanes (6) are installed at the front section of the air chamber (2), cooling pipes (3) are arranged on two sides of the gun core, and the cooling pipes (3) are connected to an annular fixing frame (4); the periphery of the gun core, the cooling pipe (3) and the annular fixing frame (4) is poured into a hammer shape through a refractory material (7); and the air flow or the material enters the inner channel (5) and is sprayed into the molten iron along the spiral guide vane (6) in an oblique line through the throat section (1) and the air chamber (2).

2. The hammer spray gun of claim 1, wherein: and the tail part of the gun core is welded with a connecting flange, and the connecting flange is connected with a blowing pipeline.

3. The hammer spray gun of claim 1, wherein: and the inlet and the outlet of the cooling pipe (3) are connected with an air cooling system.

4. The hammer spray gun of claim 1, wherein: the gun core is made of a carbon steel thick-wall seamless steel pipe.

5. The hammer spray gun of claim 1, wherein: the cooling pipe (3) is evenly provided with anchor hooks, and the anchor hooks are connected with steel wire meshes for casting stable refractory materials.

6. The hammer spray gun of claim 1, wherein: the spiral guide vanes (6) are arranged in a plurality and are circumferentially and uniformly distributed on the inner wall of the air chamber (2).