CN110814489A - A plasma air gouging gun - Google Patents

Abstract

The invention discloses a plasma air gouging gun, comprising an extension pipe, a splicing pipe, a protection nozzle, a ventilation pipe and a protective sleeve. For the ventilation pipe, the bottom end of the splicing pipe is fixedly connected with a protection nozzle through threads, and the outer wall of the connection between the splicing pipe and the protection nozzle is fixedly connected with a protective sleeve through threads. By changing it into an ultra-long gouging product, the present invention can easily solve technological problems such as small angle and large extension angle gouging and slag removal, and is widely used in the planing of special-shaped parts such as ships, bridges, steel structures, hydropower stations, oil and natural gas, etc. Process treatment.

Description

A plasma air gouging gun

technical field

The invention relates to the technical field of air gouging guns, in particular to a plasma air gouging gun.

Background technique

Carbon arc gouging is a method of surface machining grooves that uses ceramic eddy current rings or graphite rods as electrodes to generate an arc between the workpiece and the workpiece to melt the metal and blow the molten metal with compressed air. In welding production, it is mainly used for gouging, eliminating weld defects and back cleaning.

The working principle of plasma cutting is that plasma is a gas heated to an extremely high temperature and is highly ionized, which transfers the arc power to the workpiece, and the high heat melts the workpiece and blows it off, forming a working state of plasma arc cutting. After the compressed air enters the cutting torch, it is distributed into two paths by the gas chamber, that is, the plasma gas and the auxiliary gas are formed. The plasma gas arc melts the metal, while the assist gas cools the various parts of the torch and blows away the molten metal.

At present, there are similar products on the market that use plasma arc to melt metal cutting and planing, but the effect is not ideal, and the rotating air passage is too long, the airflow is unstable, the speed drops, the arc is unstable and easy to discharge randomly, and the torch and electrode nozzle are burned. , After many technical investigations, the product planing groove is shallow and the groove is skewed, so a new product is redesigned to solve various problems perfectly.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the present invention provides a plasma air gouging gun, which solves the problem that the effect is not ideal, and the rotating air passage is too long, the airflow is unstable, the speed drops, the arc is unstable, and it is easy to discharge randomly and burn out. For the cutting torch and electrode nozzle, after various technical investigations, the product planing groove is shallow and the groove is skewed.

In order to achieve the above purpose, the present invention provides the following technical solutions: a plasma air gouging gun, comprising an extension pipe, a splicing pipe, a protection nozzle, a ventilation pipe and a protective sleeve, and the bottom end of the extension pipe is fixedly connected with a splicing pipe through threads. and a vent pipe is nested inside the splicing pipe, the bottom end of the splicing pipe is fixedly connected with a protection nozzle through threads, and the outer wall of the connection between the splicing pipe and the protection nozzle is fixedly connected with a protective sleeve through threads.

Preferably, the splicing tube includes a ceramic vortex ring, an angle vortex hole, a second vent hole, a two-way collar, a third vent hole and a conductive wire, and a ceramic vortex ring is embedded in the interior of the splicing tube, and the ceramic vortex ring is The middle and lower ends are provided with angular vortex holes, the middle end of the ceramic vortex ring is provided with two ventilation holes, the bottom end of the ceramic vortex ring is nested with a bidirectional collar, and one side of the bottom end of the bidirectional collar is provided. There are conductive wires, and the top end of the two-way collar is provided with three ventilation holes.

Preferably, the protection nozzle includes a planer nozzle and a planer electrode, the protection nozzle is provided with a planer nozzle inside, and the planer nozzle is provided with a planer electrode inside.

Preferably, the outer wall of the top end of the planer nozzle is threadedly connected to the inner wall of the bottom end of the bidirectional collar.

Preferably, voids are provided on the inner walls of the protection nozzle, the planer nozzle and the planer electrode.

Preferably, the bottom end of the inner wall of the planer nozzle is provided with three inclined surfaces with different angles, and all of them are enlarged from top to bottom and from large to small.

Preferably, the length of the grooving nozzle protrudes 1 cm from the front end of the protection nozzle, and both the grooving nozzle and the end of the protection nozzle form an included angle of 30° with the gouging material on the horizontal plane.

Preferably, the angle vortex hole and the centerline of the ceramic vortex ring form an included angle of 5°-170°, preferably 110°.

The invention provides a plasma air gouging gun. Has the following beneficial effects:

(1) The plasma air gouging gun, by changing it into an ultra-long gouging product, can easily solve the process problems such as small angle and large extension angle gouging and slag removal, and is widely used in ships, bridges, steel structures, hydropower stations , Oil and gas and other special-shaped parts planing process.

(2), the plasma air gouging gun, by protecting the nozzle, planing nozzle, planing electrode and the inner wall of the front end of the air pipe, there are gaps, and the interior of the air pipe is ventilated, so that the end of the air pipe is subjected to the front end of the planing electrode. The blocking (it is to be explained here that the front end of the planing electrode is filled with conductive material) produces a backflow on the outer wall of the vent pipe, and guides the backflow gas from the gap between the planing electrode and the vent tube to the inside of the ceramic eddy current ring, and flows from the ceramic vortex. The angle vortex hole inside the ring is sprayed out through the vent hole to the gap between the planing electrode and the planer nozzle (it is to be explained here that because the angle vortex hole and the centerline of the ceramic vortex ring are at an angle of 5°-170°, preferably 110°), making it change the airflow direction and airflow speed (like a tornado, swirl airflow) while the gas passes through the angular vortex hole, thereby improving airflow stability and increasing the airflow velocity inside the ceramic vortex ring.

(3), the plasma air gouging gun is provided with three inclined surfaces of different angles through the bottom end of the inner wall of the planing nozzle, and all are enlarged from top to bottom, from large to small, so that the gas passes through the planing electrode and the planing groove. The inner wall of the nozzle is compressed in layers and multiple times at multiple angles, and the protection nozzle and the outer layer of the planing nozzle are cooled by high-speed gas. When the arc of the planing electrode nozzle is formed, a high-pressure gas field is formed around the arc to pressurize the arc twice, so that the arc is relatively stable and not stable. It is easy to discharge indiscriminately, and will not burn the torch and electrode nozzle (it should be explained here that both the nozzle and the electrode nozzle belong to the name of the partial shape of the planing electrode, collectively referred to as the planing electrode).

Description of drawings

FIG. 1 is a schematic diagram of the overall half-section structure of the present invention.

Figure 2 is a schematic diagram of the protection nozzle of the present invention.

FIG. 3 is a schematic view of the structure of the ceramic eddy current ring of the present invention.

FIG. 4 is a schematic view of the structure of the bidirectional collar of the present invention.

FIG. 5 is a schematic diagram of the overall cross-sectional structure of the present invention.

In the figure: 1. Extension tube; 2. Splicing tube; 201, Ceramic vortex ring; 2011, Angle vortex hole; 2012, Ventilation hole II; 202, Two-way collar; Protection nozzle; 301, planer nozzle; 302, planer electrode; 4, ventilation pipe.

Detailed ways

As shown in Figures 1-5, the present invention provides a technical solution: a plasma air gouging gun, comprising an extension pipe 1, a splicing pipe 2, a protection nozzle 3, a ventilation pipe 4 and a protective sleeve 5, the bottom of the extension pipe 1 is The end is fixedly connected with a splicing pipe 2 by a thread, and a vent pipe 4 is nested inside the splicing pipe 2. The bottom end of the splicing pipe 2 is fixedly connected with a protection nozzle 3 by a thread, and the splicing pipe 2 and the protection nozzle 3 are connected. The outer wall of the connection is fixedly connected with a protective sleeve 5 by means of threads.

Wherein, the splicing tube 2 includes a ceramic eddy current ring 201, an angular eddy current hole 2011, a second vent hole 2012, a bidirectional collar 202, a third vent hole 2021 and a conductive wire 2022, and a ceramic eddy current ring 201 is embedded in the interior of the splicing tube 2, and The middle and lower ends of the ceramic vortex ring 201 are provided with an angle vortex hole 2011, the middle end of the ceramic vortex ring 201 is provided with a second ventilation hole 2012, and the bottom end of the ceramic vortex ring 201 is nested with a bidirectional collar 202, and the bidirectional collar The bottom side of the 202 is provided with a conductive wire 2022, and the top end of the bidirectional collar 202 is provided with a ventilation hole 3 2021, which is convenient for the stability of the air pressure and the arc.

Among them, the protection nozzle 3 includes a planer nozzle 301 and a planer electrode 302. The protection nozzle 3 is provided with a planer nozzle 301 inside, and the planer nozzle 301 is provided with a planer electrode 302 inside, which can effectively generate electric arc to the required Processing materials, thereby improving processing efficiency.

Wherein, the top outer wall of the planer nozzle 301 is threadedly connected with the bottom end inner wall of the bidirectional collar 202, which is convenient to connect the planer nozzle 301, and the planer electrode 302 inside the planer nozzle 301 is powered by the conductive wire 2022, thereby providing air Planing efficiency.

The inner wall of the protection nozzle 3, the planer nozzle 301 and the planer electrode 302 are all provided with gaps, and the second ceramic eddy current ring 303 is less than the planer electrode 3025mm in length, which is convenient to apply pressure to the arc and improve the stability of the arc.

Among them, the bottom end of the inner wall of the planing nozzle 301 is provided with three inclined surfaces with different angles, and they are all enlarged from top to bottom and from large to small. A high-pressure gas field is formed around the nozzle arc to pressurize the arc twice.

Among them, the length of the planing nozzle 301 protrudes from the front end of the protection nozzle 3 by 1 cm, and both the planing nozzle 301 and the end of the protection nozzle 3 are at an angle of 30° with the gouging material on the horizontal plane, which is conducive to the formation of the best gouging material with the gouging material. The best planing angle can improve the planing efficiency.

The angle vortex hole 2011 and the centerline of the ceramic vortex ring 201 form an included angle of 5°-170°, preferably 110°, which facilitates the formation of a spiral airflow in the ceramic vortex ring 201 , thereby increasing the airflow velocity of the ceramic vortex ring 201 .

In use, firstly, the extension pipe 1, the splicing pipe 2, the protection nozzle 3, the ventilation pipe 4 and the protective sleeve 5 are spliced to each other, and then the conductive wire 2022 is connected with the industrial power supply, and the current is transmitted to the two-way collar 202. Inside the planing electrode 302, it generates a plasma form for spraying, and at the same time, one end of the ventilation pipe 4 is connected to the gas required for production. There is a gap, and the interior of the ventilation pipe 4 is ventilated, so that it is blocked by the front end of the planing electrode 302 at the end of the ventilation pipe 4 (it is to be explained that the front end of the planing electrode is filled with conductive material) to generate a backflow of the outer wall of the ventilation pipe 4, The recirculated gas is guided to the interior of the ceramic vortex ring 201 from the gap between the planing electrode 302 and the front end of the vent pipe 4, and is ejected from the angle vortex hole 201 inside the ceramic vortex ring and passed to the planer nozzle 301 through the vent hole 3 2021. In the gap between it and the protection nozzle 3 (it is to be explained here that the angle vortex hole and the center line of the ceramic vortex ring form an included angle of 5°-170°, preferably 110°), so that the gas passes through the angle vortex hole. 201 at the same time change the airflow direction and airflow speed (similar to a tornado, swirling airflow), thereby improving airflow stability, and increasing the airflow speed inside the ceramic vortex ring 201, and because the bottom end of the inner wall of the grooving nozzle 301 is provided with three different angles The inclined planes are arranged from top to bottom, from large to small, so that when the gas passes through the planing electrode 302 and the inner wall of the planing nozzle 301, it is compressed in multiple layers and multiple times, and the inner wall of the nozzle 3 and the planing nozzle are protected. The outer wall of 301 is cooled by high-speed gas, and a high-pressure gas field is formed around the nozzle of the planing electrode 302 to pressurize the arc twice, so that the arc is relatively stable, and it is not easy to discharge randomly, and it will not burn the torch and the electrode nozzle (it will be explained here). The point is that both the nozzle and the electrode nozzle belong to the name of the partial shape of the planing electrode, collectively referred to as the planing electrode) to complete the whole process.

The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (8)

1. The utility model provides a plasma gouging torch, includes extension pipe (1), concatenation pipe (2), protection spray tube (3), breather pipe (4) and protective sheath (5), its characterized in that: the bottom of extension pipe (1) is through screw thread fixedly connected with concatenation pipe (2), and the inside nestification of concatenation pipe (2) is provided with breather pipe (4), the bottom of concatenation pipe (2) is through screw thread fixedly connected with protection spray tube (3), and the junction outer wall of concatenation pipe (2) and protection spray tube (3) is through screw thread fixedly connected with protective sheath (5).

2. A plasma gouging gun according to claim 1, wherein: splicing pipe (2) is including ceramic vortex ring (201), angle vortex hole (2011), air vent two (2012), two-way lantern ring (202), air vent three (2021) and conducting wire (2022), the inside embedding of splicing pipe (2) is provided with ceramic vortex ring (201), and the well lower extreme of ceramic vortex ring (201) runs through and is equipped with angle vortex hole (2011), the well end of ceramic vortex ring (201) runs through and is equipped with air vent two (2012), the bottom nestification of ceramic vortex ring (201) is equipped with two-way lantern ring (202), and the bottom one side of two-way lantern ring (202) is equipped with conducting wire (2022), the top of two-way lantern ring (202) runs through and is equipped with air vent three (2021).

3. A plasma gouging gun according to claim 2, wherein: protection spray tube (3) are including planing groove mouth (301) and plane electrode (302), the inside of protection spray tube (3) is equipped with planing groove mouth (301), and the inside of planing groove mouth (301) is equipped with and digs electrode (302).

4. A plasma gouging gun according to claim 3, wherein: the outer wall of the top end of the gouging nozzle (301) is in threaded connection with the inner wall of the bottom end of the bidirectional lantern ring (202).

5. A plasma gouging gun according to claim 3, wherein: the inner walls of the protective spraying pipe (3), the gouging nozzle (301) and the gouging electrode (302) are all provided with gaps.

6. A plasma gouging gun according to claim 1, wherein: the inner wall bottom of keyway planer mouth (301) is equipped with the inclined plane of three different angles, and all from top to bottom, enlarges the setting from big to small.

7. A plasma gouging gun according to claim 3, wherein: the length of the gouging nozzle (301) protrudes to be 1cm from the front end of the protective spray pipe (3), and the ends of the gouging nozzle (301) and the protective spray pipe (3) form an included angle of 30 degrees with the horizontal plane gouging material.

8. A plasma gouging gun according to claim 2, wherein: the angle vortex hole (2011) forms an included angle of 5-170 degrees with the center line of the ceramic vortex ring (201), and preferably 110 degrees.

Images