CN212239543U - Cutting nozzle - Google Patents

Abstract

The utility model discloses a cutting torch, locate including cutting torch core, cover cutting torch core outside cutting torch cover and cutting oxygen passageway cutting torch core include mouth core main part, gas passage, the preceding tip of cutting torch cover be provided with anti-backfire structure, be provided with anti-backfire structure through the preceding tip at cutting torch cover, have the difference in height between the preceding terminal surface of messenger's its and mouth core main part, adopt such mode, can make under the condition of cutting torch and the complete contact of cutting workpiece, flame and gas flame pass through the passageway blowout of difference in height formation, effectively prevent that the nozzle from leading to the fact the backfire easily because of the air flue seals, stop the potential safety hazard of explosion in the air flue of taking place, can reduce the cost of labor moreover.

Description

Cutting nozzle

Technical Field

The utility model relates to a cutting technical field especially relates to a cutting torch.

Background

Currently, cutting tools for workpieces include a variety of plasma cutting devices, laser cutting devices, flame cutting devices, and the like. The flame cutting device is a cutting device for cutting metal materials by utilizing gas-oxygen or gasoline-oxygen, and compared with laser cutting, the flame cutting device is far inferior to a laser cutting machine in cutting speed precision and cutting material types, but is far superior to the laser cutting machine in cutting thickness and cutting cost. Compared with plasma cutting, the temperature during flame cutting is lower than that during plasma cutting, so that the cutting rate is lower than that of plasma cutting, stainless steel and a lot of nonferrous metals can not be cut normally, but the flame cutting device has the advantages that large-thickness plates can be cut, the flame cutting technology for cutting 2000 mm-thick plates is mastered in China at present, the cutting equipment and the cutting cost are relatively low, and the pollution is less than that of a plasma cutting machine. Therefore, flame cutting devices have irreplaceable important roles in the field of cutting or roughing.

When panel cutting, need the handheld cutting torch of operative employee messenger cutting torch to remove along predetermined route, form the incision, simultaneously, in order to guarantee the cutting quality, cutting torch and panel need relatively nearer distance, therefore, to the distance between cutting torch and the panel, the skilled operation workman of technique just can keep, the distance between novice or the operative employee who is not experienced can't good control cutting torch and panel often cutting, it is too big to cause the cutting badly easily, the undersize is pasted on the panel of cutting easily, cause the air flue of nozzle to seal, cause the tempering easily, the potential safety hazard of explosion in the air flue takes place even.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is not enough to prior art, provide an maneuverability is stronger, and cutting operation personnel technical requirement is low, operates safer cutting torch.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a cutting nozzle comprises a cutting nozzle core, a mixed gas channel and a cutting nozzle sleeve covering the outside of the cutting nozzle core, wherein the cutting nozzle core comprises a nozzle core main body and a cutting oxygen channel, and the front end part of the cutting nozzle sleeve is provided with an anti-backfire structure.

In the above technical scheme, the anti-backfire structure is integrally arranged on the front end face of the cutting tip sleeve.

In the technical scheme, the anti-backfire structure is sleeved at the front end of the cutting nozzle sleeve and can be fixed through the fixing structure to prevent the cutting nozzle sleeve from falling off.

In the above technical scheme, the anti-backfire structure comprises a first working part and a second working part, wherein a height difference exists between a working surface of the first working part and a front end surface of the nozzle core main body, a working surface of the second working part is flush or concave-convex with the front end surface of the nozzle core main body, and the height difference enables an air duct for preventing backfire to be formed between the working surfaces of the first working part and the second working part.

In the technical scheme, the first working parts are at least two, so that the tempering prevention effect is ensured.

In the technical scheme, the anti-backfire structure comprises an anti-backfire sleeve and a protruding portion, the end face of the anti-backfire sleeve is flush or concave-convex with the front end face of the nozzle core main body, the protruding portion is integrally arranged on the end face of the anti-backfire sleeve, and the protruding portion can prevent the surface of the cutting part from being blocked due to contact with the nozzle core main body when the operation is unskilled.

In the above technical scheme, the protruding part is at least provided with two effects of ensuring the prevention of backfire.

Compared with the prior art, the method has the following beneficial effects: the anti-backfire structure is arranged at the front end part of the cutting tip sleeve, so that the height difference exists between the front end part of the cutting tip sleeve and the front end face of the tip core main body, and by adopting the mode, flame and gas can be sprayed out through a channel formed by the height difference under the condition that the cutting tip and a cutting workpiece are in complete contact, so that the nozzle is effectively prevented from easily causing backfire due to the fact that the air channel is closed, the potential safety hazard of explosion in the air channel is avoided, and the labor cost can be reduced.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example 1: referring to fig. 1, a cutting torch comprises a cutting torch core, a cutting torch sleeve 2 covering the cutting torch core, and a mixed gas channel 21, wherein the cutting torch core comprises a torch core main body 11 and a cutting oxygen gas channel 12, and an anti-backfire structure 3 is integrally arranged on the front end surface of the cutting torch sleeve 2.

The anti-backfire structure 3 comprises a first working part 31 and a second working part 32, a height difference exists between the working surface of the first working part and the front end face of the nozzle core main body 11, and the working surface of the second working part is flush or concave-convex with the front end face of the nozzle core main body 11, so that spaced circulation channels are formed between the working surface of the first working part and the working surface of the second working part, and the channels can enable the working surface of the first working part to block when the cutting nozzle is attached to a cutting part, so that the gas channel 12 can be communicated with the outside through the circulation channels, the first working part 31 is at least provided with two, optimally, three first working parts 31 are arranged, and the structure of a contact surface is more stable.

The working parts of the anti-backfire structure 3 can be formed by spacing grooves, namely the groove bottom is the second working part, the groove top is the first working part, and the space formed by the grooves is the flow channel.

Example 2: a cutting nozzle comprises a cutting nozzle core, a cutting nozzle sleeve 2 covering the outside of the cutting nozzle core, and a mixed gas channel 21, wherein the cutting nozzle core comprises a nozzle core main body 11 and a cutting oxygen channel 12, and an anti-backfire structure 3 is sleeved at the front end of the cutting nozzle sleeve 2. The anti-backfire structure 3 comprises an anti-backfire sleeve 33 and a protruding portion 34, the end face of the anti-backfire sleeve 33 is flush with or concave-convex with the front end face of the nozzle core main body 11, the protruding portion 34 is integrally arranged on the end face of the anti-backfire sleeve 33, the height difference formed between the protruding portion 34 and the end face of the anti-backfire sleeve 33 is a flow channel, and the flow channels can enable the plane of the protruding portion 34 to block when the cutting nozzle is attached to a cutting piece, so that the gas channel 12 can be communicated with the outside through the flow channel. The number of the convex parts 34 is at least two, and the optimal number is three, so that the contact surface structure is stable.

Among the above-mentioned technical scheme, during the cutting steel sheet of common cutting torch, when cutting torch and cutting member are attached, explode the spark that goes out the high pressure production very easily in the reverse cutting torch and cutting torch of getting into, mixed gas and gas in detonating cutting torch and the cutting torch, adopt this structure this and just can guarantee unskilled operator when taking place attached, have enough time and make cutting torch and cutting member separation, effectively prevent the emergence of tempering, stop the potential safety hazard of explosion in the emergence air flue, the requirement to the operative employee reduces simultaneously, the effective control cost of labor.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims (7)

1. A cutting nozzle comprises a cutting nozzle core, a mixed gas channel (21) and a cutting nozzle sleeve (2) covering the outside of the cutting nozzle core, wherein the cutting nozzle core comprises a nozzle core main body (11) and a cutting oxygen gas channel (12), and the cutting nozzle is characterized in that an anti-backfire structure (3) is arranged at the front end part of the cutting nozzle sleeve (2).

2. A cutting torch as in claim 1, wherein said anti-backfire structure (3) is integrally formed on the front end surface of said torch sheath (2).

3. A cutting torch as claimed in claim 1, wherein said anti-backfire structure (3) is fitted around the front end of said torch sleeve (2).

4. A cutting torch as claimed in claim 2, wherein said anti-backfire structure (3) comprises a first working portion (31) and a second working portion (32), said first working portion having a working surface level or uneven with the front end surface of said torch core body (11) and said working surface of said second working portion being at the same level or uneven with the front end surface of said torch core body (11).

5. A cutting torch according to claim 4, wherein at least two of said first working portions (31) are provided.

6. A cutting torch as claimed in claim 3, wherein said anti-backfire structure (3) comprises an anti-backfire sleeve (33) and a protrusion (34), an end face of said anti-backfire sleeve (33) is flush with or concave-convex with a front end face of said torch core body (11), and said protrusion (34) is integrally provided on the end face of said anti-backfire sleeve (33).

7. A cutting torch as in claim 6, wherein at least two of said projections (34) are provided.

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