CN211502776U

CN211502776U - Groove-ring-shaped composite cutting torch

Info

Publication number: CN211502776U
Application number: CN201922483517.1U
Authority: CN
Inventors: 朱成伟
Original assignee: NINGBO JIANGBEI XINGDA WELDING CUTTING REGULATING METER FACTORY
Current assignee: NINGBO JIANGBEI XINGDA WELDING CUTTING REGULATING METER FACTORY
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-15
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a compound cutting torch of groove ring shape, includes the overcoat, is provided with the inner core in the overcoat, forms annular space between overcoat and the inner core, is provided with the stop gear who makes the inner core not take place the skew in the annular space, forms gas between the export of stop gear and overcoat and assembles the space. The limiting mechanism which can prevent the inner core from deviating is arranged between the outer sleeve and the inner core, so that the inner core can not deviate when the outer sleeve and the inner core are assembled even if the cutting nozzle part is not accurately machined, and flame is gathered and uniform; therefore, the processing precision is reduced, and the production cost is reduced; meanwhile, manual inspection is not needed before cutting, so that the labor cost is reduced; an annular gas gathering space is formed between the limiting mechanism and the outlet of the outer sleeve, the flame sprayed after ignition is uniform, the problems that the flame does not gather and is separated due to the fact that the flame is not gathered and is distributed due to the fact that the flame is opened to the acetylene gas with a high ignition point are avoided, the cutting effect is good, and the flame gathers.

Description

Groove-ring-shaped composite cutting torch

Technical Field

The utility model relates to a belong to the cutting technology field, especially relate to a compound cutting torch of groove ring shape.

Background

At present, when flame cutting is carried out on metal materials, mixed gas (fuel gas and oxygen) is combusted to generate heat to heat and melt metal, cutting oxygen flow blows off molten metal liquid, and finally the metal is cut and broken. The cutting nozzle comprises an outer sleeve, an inner core is arranged in the outer sleeve, the outer sleeve and the inner core are both provided with openings, the outer sleeve and the inner core are generally connected through threads, an annular space is formed between the outer sleeve and the inner core, oxygen is introduced into the inner core, mixed gas is introduced into the annular space, the mixed gas and the oxygen are gathered in the openings and can be processed and cut after being ignited.

The traditional cutting nozzle mainly comprises the following parts, one part is that no convex strip is arranged on the outer wall of the inner core, as shown in a sectional view in figure 1, because threads or machining precision is not high, after assembly, the outlet end of the inner core is often eccentric with the outlet end of the outer sleeve, so that preheating flame is not uniform, firepower is not concentrated, preheating efficiency is reduced, slag is remained on a cutting surface, unevenness is caused, the other part is that a convex strip groove is arranged on the inner core, but the convex strip groove penetrates through the outlet end of the inner core, the arrangement can be normally used for gas with slow combustion speed such as propane or natural gas, but for gas with fast combustion speed like acetylene, a gap between the outlet end of the inner core and the outlet end of the outer sleeve is reduced, firepower is concentrated, the gas flow speed is accelerated, the arrangement of the convex groove can slow down the flow speed, the cutting effect is.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem to provide a compound cutting torch of groove ring shape, the inner core and the overcoat annular exit end of cutting torch can not take place off-centre, and flame concentrates evenly.

The utility model provides a compound cutting torch of groove ring shape, includes the overcoat, be provided with the inner core in the overcoat, form annular space between overcoat and the inner core, be provided with the stop gear who makes the inner core not take place the skew in the annular space, stop gear with form gas between the export of overcoat and assemble the space.

In the above technical solution, further, the limiting mechanism includes a plurality of protruding strips arranged on the outer wall of the inner core and axially parallel to the inner core, and the gas gathering space is formed between one end of the protruding strip near the outlet of the outer sleeve and the outlet of the outer sleeve. The inner core and the outer sleeve are limited under the supporting action of the protruding strips, so that the inner core is not deviated, and the ignited flame is uniform.

In the above technical scheme, further, the limiting mechanism includes a plurality of protruding strips arranged on the inner wall of the outer sleeve and parallel to the axial direction of the outer sleeve, one end of the protruding strip close to the outlet of the outer sleeve and the outlet of the outer sleeve form the gas gathering space.

In the above technical solution, further, the limiting mechanism includes a step arranged on the outer wall of the inner core and extending outwards, the step is provided with a plurality of through holes, and the gas gathering space is formed between the step and the outlet of the outer sleeve.

In the above technical solution, further, the limiting mechanism includes a step arranged on the inner wall of the outer sleeve and extending inwards, the step is provided with a plurality of through holes, and the gas gathering space is formed between the step and the outlet of the outer sleeve.

In the above technical scheme, further, the limiting mechanism includes a sleeve pipe sleeved outside the inner core, a plurality of protruding strips axially parallel to the sleeve pipe are arranged on the sleeve pipe, one end of the protruding strip close to the outlet of the outer sleeve and the outlet of the outer sleeve form the gas gathering space therebetween.

In the above technical scheme, further, an air passage is formed between two adjacent protruding strips, and an arc-shaped concave surface is arranged in an inner core outer wall area between the two adjacent protruding strips. The arc concave surface accelerates the gas flowing speed, the combustion is more stable, and the tempering is not easy.

In the above technical solution, further, the inner core is contracted toward the outlet end of the inner core. The constriction makes the gas flowing in the core more stable.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the limiting mechanism which can prevent the inner core from deviating is arranged between the outer sleeve and the inner core, so that the inner core can not deviate when the outer sleeve and the inner core are assembled even if the cutting nozzle part is not accurately machined, and flame is gathered and uniform; therefore, the processing precision is reduced, and the production cost is reduced; meanwhile, manual inspection is not needed before cutting, so that the labor cost is reduced;

2. an annular gas gathering space is formed between the limiting mechanism and the outlet of the outer sleeve, the flame sprayed after ignition is uniform, the problems that the flame does not gather and is separated due to the fact that the flame is not gathered and is distributed due to the fact that the flame is opened to the acetylene gas with a high ignition point are avoided, the cutting effect is good, and the flame gathers.

3. The arc concave surface which is arranged in the air passage and used for accelerating the gas enables the combustion to be more stable, the gas flow velocity is not easy to backfire, the anti-backfire capability is improved, and the safety performance is improved.

Drawings

Fig. 1 is a schematic view of one of the conventional cutting tips.

Fig. 2 is a schematic view of the cutting torch of the present invention.

Fig. 3 is a cross-sectional view of the cutting torch of the present invention.

Fig. 4 is an enlarged view of a in fig. 3.

Fig. 5 is a schematic diagram of the inner core of the cutting torch of the present invention.

Fig. 6 is a schematic view of the outer sleeve of the cutting torch of the present invention.

Fig. 7 shows a first limiting mechanism of the cutting torch of the present invention.

Fig. 8 shows a second limiting mechanism of the cutting torch of the present invention.

Fig. 9 shows a third limiting mechanism of the cutting torch of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 7, a slot-ring-shaped composite cutting torch comprises an outer sleeve 1, wherein the outer sleeve 1 is a hollow cylinder provided with an opening in the axial direction, an inner core 2 is arranged in the outer sleeve 1, the inner core 2 comprises an inner core base 21, an inner core nozzle 22 is in threaded connection with the inner core base 21, the outer sleeve 1 is further in threaded connection with the inner core base 21, the outer sleeve 1 is sleeved on the inner core 2, and an annular space 25 is formed between the outer sleeve 2 and the inner core nozzle 22.

The inner core base 21 is provided with first channels 24 for introducing mixed gas, and the number of the first channels 24 is between 3 and 8; the first passage 24 communicates with the annular space 25; a second channel 23 for leading cutting oxygen is also arranged in the axial direction of the inner core base, the inner core nozzle 22 is also provided with the second channel 23 in the axial direction, after the inner core base 21 is connected with the inner core nozzle 22 through threads, the inner core base 21 and the inner core nozzle 22 are coaxial, and the second channel 23 penetrates through the inner core base 21 and the inner core nozzle 22.

The core nozzle 22 comprises a first column 221 in threaded connection with the core base 21, the first column 221 is contracted to a second column 222 through a third column 223 which is contracted in a conical shape, and the inner wall of the outer sleeve and the second channel are contracted corresponding to the core nozzle; a first annular space 251 is formed between the first column 221 and the outer sleeve, and the first annular space 251 is communicated with the first channel; a second annular space 252 is formed between the second post 222 and the outer jacket; a hollow conical space 253 is formed between the third column 223 and the outer sleeve, and the mixed gas is accelerated for the first time when passing through the inclined surface on the hollow conical space 253.

The open end in the first post is flush with the open end of the outer sleeve.

A limiting mechanism 3 used for preventing the inner core from being eccentric is arranged in an annular space 25 between the outer sleeve 1 and the inner core 2, and a gas gathering space 4 is formed between the limiting mechanism 3 and an outlet of the outer sleeve 1; in this embodiment, the limiting mechanism 3 includes a plurality of protruding strips 31 arranged on the outer wall of the second column 222 and axially parallel to the second column, the number of the protruding strips is 4-8, and the protruding strips 31 extend from one end of the second column 222 close to the base of the inner core to a position 2-3 mm away from the outlet end of the second column 222; namely, an annular gas convergence space 4 is formed between the tail end of the convex strip 31 and the outlet of the outer sleeve 1;

when the inner core is established to 1 cover of overcoat, owing to be provided with protruding strip 31 for support and spacing between protruding strip and the overcoat inner wall, under the inaccurate condition of inner core thread processing, also can not take place off-centre between inner core and the overcoat.

Form the air flue 32 that is used for the mist circulation between two adjacent protruding strips 31, two adjacent protruding strips 31 divide second annular space 252 into a plurality of air flue 32 promptly, are provided with inside sunken arc concave surface 33 on the outer wall region of second post 222 between two adjacent protruding strips 31, and the mist enters into gas through arc concave surface 33 and assembles space 4 and realize accelerating for the second time, prevents the tempering, and makes gas combustion more stable.

The mixed gas is introduced into the first channel 24, the oxygen is introduced into the second channel 23, the oxygen is discharged from the outlet of the inner core through the second channel 23 penetrating through the inner core 2, the mixed gas enters the first annular space 251 after passing through the first channel and then enters the hollow conical space 253, the first acceleration is carried out on the inclined plane of the hollow conical space, the mixed gas enters the air passage, the arc-shaped concave surface 33 in the air passage enters the gas gathering space 4 to realize the second acceleration, and the mixed gas is discharged from the outlet of the outer sleeve.

Of course, the limiting mechanism in this embodiment may be disposed on the inner wall of the outer sleeve, that is, the protruding strips are disposed on the inner wall of the outer sleeve, which is consistent with the structural principle of this embodiment and is drawn in the drawings.

Aiming at the structure of the limiting mechanism, the following embodiments are provided:

example 1:

as shown in fig. 8, the limiting mechanism 3 includes a step 51 provided on the second column 222, the step 51 is perpendicular to the axial direction of the second column 222 and faces outwards, a through hole 52 is provided on the step 51, and the through hole 52 is used for introducing the mixed gas; a gas gathering space 4 is formed between the step 51 and the opening end of the second column;

when the overcoat cover was established outside the inner core, owing to be provided with the step, support and spacing between step and the overcoat inner wall, under the inaccurate condition of inner core thread processing, also can not take place the skew between inner core and the overcoat.

Of course, the limiting mechanism in this embodiment may be disposed on the inner wall of the outer sleeve, that is, the step is disposed on the inner wall of the outer sleeve, which is consistent with the structural principle of this embodiment and is drawn in the drawings.

Example 2:

as shown in fig. 9, the limiting mechanism includes a sleeve sleeved on the second column 222, the outer wall of the sleeve is provided with a plurality of protruding strips which are parallel to the axial direction of the sleeve, the number of the protruding strips is between 4 and 5, and the protruding strips extend from one end of the second column close to the base of the inner core to a position 2 to 3mm away from the outlet end of the second column; namely, an annular gas convergence space is formed between the tail end of the convex strip and the outlet of the outer sleeve 1;

when the overcoat cover was established outside the inner core, owing to be provided with protruding strip, support and spacing between protruding strip and the overcoat inner wall, under the inaccurate condition of inner core thread processing, also can not take place the skew between inner core and the overcoat.

Of course, the limiting mechanism in this embodiment may be disposed on the inner wall of the outer sleeve, that is, embedded on the inner wall of the outer sleeve 1, consistent with the structural principle of this embodiment, which is illustrated in the attached drawings.

The present invention is not limited to the above embodiments, and for those skilled in the art, other corresponding changes or replacements can be made according to the technical idea of the present invention, and these all fall into the protection scope of the present invention.

Claims

1. The utility model provides a compound cutting torch of groove ring shape, includes overcoat (1), be provided with inner core (2) in the overcoat, form annular space (25) between overcoat and the inner core, its characterized in that, be provided with in the annular space and make the inner core not take place stop gear (3) that squints, stop gear with form gas between the export of overcoat and assemble space (4).

2. The slot-ring type composite cutting torch as claimed in claim 1, wherein the limiting mechanism comprises a plurality of protruding strips (31) which are arranged on the outer wall of the inner core and are parallel to the axial direction of the inner core, and the gas convergence space (4) is formed between one end of the protruding strips, which is close to the outlet of the outer sleeve, and the outlet of the outer sleeve.

3. The slot-ring-shaped composite cutting torch as claimed in claim 1, wherein the limiting mechanism comprises a plurality of protruding strips (31) which are arranged on the inner wall of the outer sleeve and are axially parallel to the outer sleeve, and the gas convergence space (4) is formed between one end of each protruding strip (31) close to the outlet of the outer sleeve and the outlet of the outer sleeve.

4. The slot-ring-shaped composite cutting torch as claimed in claim 1, wherein the limiting mechanism comprises an outwardly extending step (51) arranged on the outer wall of the inner core, a plurality of through holes (52) are arranged on the step, and the gas gathering space (4) is formed between the step and the outlet of the outer sleeve.

5. The slot-ring-shaped composite cutting torch as claimed in claim 1, wherein the limiting mechanism comprises an inwardly extending step (51) arranged on the inner wall of the outer sleeve, a plurality of through holes (52) are arranged on the step, and the gas gathering space (4) is formed between the step and the outlet of the outer sleeve.

6. The slot-ring-shaped composite cutting torch as claimed in claim 1, wherein the limiting mechanism comprises a sleeve (61) sleeved outside the inner core, the sleeve is provided with a plurality of protruding strips axially parallel to the sleeve, and the gas gathering space (4) is formed between one end of the protruding strips, which is close to the outlet of the outer sleeve, and the outlet of the outer sleeve.

7. The slot-ring-shaped composite cutting torch as claimed in claim 2, wherein an air passage (32) is formed between two adjacent convex strips, and an arc-shaped concave surface (33) is arranged on the inner core outer wall area between the two adjacent convex strips.

8. The fluted ring composite cutting torch according to claim 1, wherein the inner core is tapered toward the outlet end of the inner core.