Gun body and gas cutting gun thereof

Abstract

The utility model discloses a gun body and a gas cutting gun thereof, and belongs to the technical field of gas cutting guns, the gun body comprises a grip, a mixer and a mixing core, an oxygen pipeline and a gas pipeline are arranged in the grip, and the oxygen pipeline and the gas pipeline are respectively provided with an oxygen valve and a gas valve; the mixer is arranged at the front end of the grip, a mixing cavity is formed in the mixer, the mixing core is arranged in the mixing cavity, the mixing core comprises a core rod and a plurality of flow guide units arranged on the core rod, and oxygen and fuel gas entering the mixing cavity pass through the mixing core and then are discharged from the mixed gas outlet end. According to the utility model, the mixing core is arranged in the mixer, so that oxygen and fuel gas entering the mixing cavity can flow in the mixing cavity in a repeated direction changing manner under the action of the plurality of flow guide units, and the oxygen and the fuel gas are impacted and collided repeatedly, so that the oxygen and the fuel gas are mixed quickly and uniformly, and the mixing uniformity of the mixed gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas cutting torch technical field, concretely relates to a gun body and gas cutting torch thereof. BACKGROUND

[0002] The gas cutting torch is also called cutting torch, and is an important tool for gas cutting. The main function is to mix combustible gas and oxygen in the cutting torch to form a preheating flame with certain heat energy and shape, and to spray high-pressure oxygen flow in the center of the preheating flame to perform gas cutting work. The gas cutting torch is usually composed of a handle, a pipeline, a nozzle, an adjuster and a valve. It has two independent gas inlets, one for oxygen and the other for combustible gas. The conventional gas cutting torch has deficiencies in gas mixing and flow adjustment, which affects the cutting quality and operation convenience. Therefore, it is necessary to improve the structure of the gas cutting torch to improve its comprehensive performance. SUMMARY

[0003] In view of the above technical deficiencies, the utility model aims to provide a gun body and gas cutting torch thereof, which is provided with a mixing core to improve the gas mixing effect.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: the utility model provides a gun body, which comprises:

[0005] a handle, an oxygen pipeline and a gas pipeline are arranged in the handle, and the oxygen pipeline and the gas pipeline are respectively provided with an oxygen valve and a gas valve;

[0006] a mixer, which is arranged at the front end of the handle, and is provided with a mixing chamber, an oxygen inlet end, a gas inlet end and a mixed gas outlet end, the oxygen inlet end is communicated with the oxygen pipeline, and the gas inlet end is communicated with the gas pipeline;

[0007] a mixing core, which is arranged in the mixing chamber, and comprises a core rod and a plurality of flow guide units arranged on the core rod, the oxygen and the gas entering the mixing chamber are discharged from the mixed gas outlet end after passing through the mixing core.

[0008] Further, the flow guide unit comprises:

[0009] a rod sleeve, which is sleeved on the core rod;

[0010] a plurality of flow guide vanes, which are uniformly distributed on the circumferential surface of the rod sleeve.

[0011] Further, a limiting key is arranged on the inner side of the rod sleeve, and a key groove matched with the limiting key is formed on the core rod.

[0012] Further, the flow guide vanes are inclinedly arranged on the rod sleeve.

[0013] Further, the adjusting valve is arranged for adjusting the amount of oxygen entering the mixing chamber from the oxygen inlet, the adjusting valve comprises a valve body, the valve body is tapered at one end close to the mixing chamber, the oxygen inlet is shaped like a horn, and the valve body gradually closes the oxygen inlet when moving towards the oxygen inlet.

[0014] Further, the core rod is fixed at the end of the valve body close to the mixing chamber.

[0015] Further, the mixer is provided with a mounting cavity for mounting the valve body, the oxygen pipe is communicated with the mounting cavity, and the mounting cavity is communicated with the oxygen inlet.

[0016] Further, the valve body is stepped, and the valve body is provided with a sealing ring.

[0017] Further, the two adjacent flow guiding units are symmetrically arranged on the core rod.

[0018] A gas cutting torch comprises the above-mentioned torch body, and further comprises:

[0019] A mixed gas pipe is connected with the mixed gas outlet.

[0020] A cutting oxygen pipe is connected with the oxygen pipe.

[0021] A cutting nozzle is arranged at the end of the mixed gas pipe away from the mixer, and the cutting oxygen pipe is communicated with the cutting nozzle.

[0022] The gas cutting torch has the following advantages:

[0023] The mixing core is arranged in the mixer, so that the oxygen and the gas entering the mixing chamber can repeatedly flow in the mixing chamber under the action of the plurality of flow guiding units, the oxygen and the gas repeatedly impact and collide, thereby being quickly mixed and uniformly distributed, and the uniformity of the mixed gas is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description.

[0025] Figure 1A structure schematic view of a gun body provided by the embodiment one of the utility model.

[0026] Figure 2 A structure schematic view of the mixer of the utility model.

[0027] Figure 3 A Figure 2 A local enlarged view at A.

[0028] Figure 4 A top view of the regulating valve and the mixing core of the utility model.

[0029] Figure 5 A perspective view of the regulating valve and the mixing core of the utility model.

[0030] Mark explanation:

[0031] 1, handle, 2, oxygen pipeline, 3, gas pipeline, 4, oxygen valve, 5, gas valve, 6, mixer, 7, mixing chamber, 8, oxygen inlet end, 9, gas inlet end, 10, mixed gas outlet end, 11, mixing core, 111, core rod, 112, rod sleeve, 113, guide vane, 12, regulating valve, 13, valve body, 14, mounting cavity, 15, sealing ring, 16, mixed gas pipe, 17, cutting oxygen pipe, 18, cutting nozzle, 19, nut. Specific implementation

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] Embodiment one:

[0034] As Figures 1 to 5 shown, the utility model embodiment one provides a gun body, including handle 1, mixer 6 and mixing core 11, handle 1 is inserted with oxygen pipeline 2 and gas pipeline 3, mixer 6 is set up at the front end of handle 1, oxygen pipeline 2 passes through from mixer 6, the part of oxygen pipeline 2 on mixer 6 is installed with oxygen valve 4, and gas pipeline 3 is installed with gas valve 5 on the side of handle 1 away from mixer 6, by rotating oxygen valve 4 and gas valve 5, can adjust oxygen output speed and gas output speed respectively.

[0035] As Figure 2 and Figure 3As shown in the figure, the mixer 6 is provided with a mixing chamber 7, and the mixing chamber 7 has three gas inlets and outlets, namely an oxygen gas inlet end 8, a fuel gas inlet end 9 and a mixed gas outlet end 10. The fuel gas pipeline 3 extends into the mixer 6 and communicates with the fuel gas inlet end 9. The oxygen pipeline 2 communicates with the oxygen gas inlet end 8 at the portion between the oxygen valve 4 and the handle 1. After the oxygen gas and the fuel gas enter the mixing chamber 7 from the oxygen gas inlet end 8 and the fuel gas inlet end 9 respectively, they are mixed and then discharged from the mixed gas outlet end 10.

[0036] In order to improve the mixing efficiency of the oxygen gas and the fuel gas and fully mix the fuel gas and the oxygen gas, the mixing core 11 designed by the utility model comprises a core rod 111 arranged in the mixing chamber 7, and seven flow guide units are arranged on the core rod 111. Each flow guide unit comprises a rod sleeve 112 arranged on the core rod 111 and six flow guide vanes 113 uniformly fixed on the outer circumferential surface of the rod sleeve 112. The flow guide vanes 113 are inclined, so that the oxygen gas entering the mixing chamber 7 from the oxygen gas inlet end 8 flows in the mixing chamber 7 in a changed direction under the action of the flow guide vanes 113.

[0037] In order to repeatedly collide and mix the fuel gas and the oxygen gas, the flow guide direction of the flow guide unit repeatedly changes. As shown in the figure, Figure 4 The flow guide vanes 113 on the adjacent two flow guide units are opposite in direction, that is, the adjacent two flow guide units are symmetrically arranged. In this way, the oxygen gas and the fuel gas entering the mixing chamber 7 will gradually collide and mix uniformly in the repeatedly changed direction.

[0038] Embodiment two:

[0039] On the basis of embodiment one, in order to facilitate the adjustment of the flow of the oxygen gas entering the mixing chamber 7 and adjust the proportion of the fuel gas and the oxygen gas in the mixing chamber 7, the utility model is provided with an adjusting valve 12 on the mixer 6. Specifically, as shown in the figures, Figure 2 And Figure 3 The adjusting valve 12 comprises a handle and a valve body 13, and the handle is fixed to one end of the valve body 13. The mixer 6 is provided with a mounting cavity 14 for mounting the valve body 13, and the valve body 13 can be inserted into the mounting cavity 14 from one end of the mixer 6. The valve body 13 is in a stepped shape, and the diameter of the valve body 13 gradually decreases from the end close to the handle to the end away from the handle. The valve body 13 is provided with threads for screwing with the mounting cavity 14.

[0040] As shown in the figure, Figure 3As shown, the oxygen pipe 2 located in the mixer 6 is communicated with the installation cavity 14, and the oxygen inlet end 8 is in the shape of a horn and is located at the end of the installation cavity 14 far from the handle. The oxygen from the oxygen pipe 2 first enters the installation cavity 14 and then enters the oxygen inlet end 8. The valve body 13 is provided with a sealing ring 15 which can be used to seal the gap between the installation cavity 14 and the valve body 13 to prevent the oxygen from leaking from the end of the installation cavity 14 close to the handle. The end of the valve body 13 close to the oxygen inlet end 8 is in the shape of a cone, and when the handle is rotated, the valve body 13 is moved towards the mixing cavity 7, which makes the valve body 13 gradually block the oxygen inlet end 8, so as to adjust the amount of oxygen entering the mixing cavity 7 through the oxygen inlet end 8.

[0041] The core rod 111 is fixed at the end of the valve body 13 close to the mixing cavity 7. In order to stably arrange the flow guide unit on the core rod 111, the utility model is provided with a limiting key on the inside of the rod sleeve 112, and the core rod 111 is provided with a key groove matched with the limiting key. The limiting key and the key groove are in sliding fit, which can limit the rotation of the rod sleeve 112 on the core rod 111. In order to avoid the axial movement of the rod sleeve 112 along the core rod 111, the utility model is provided with a nut 19 screwed at the end of the core rod 111 far from the valve body 13, and the nut 19 abuts against the rod sleeve 112 to avoid the movement of the rod sleeve 112.

[0042] Embodiment three:

[0043] On the basis of the above-mentioned embodiments, the utility model further provides a gas cutting torch, like Figure 1 As shown, the gas cutting torch comprises the above-mentioned torch body and a mixed gas pipe 16, a cutting oxygen pipe 17 and a cutting nozzle 18, wherein the mixed gas pipe 16 is connected with the mixed gas outlet end 10, and the cutting oxygen pipe 17 is communicated with the oxygen pipe 2 at the side of the oxygen valve 4 far from the handle 1. In this way, the oxygen conveying speed in the cutting oxygen pipe 17 can be adjusted by rotating the oxygen valve 4. The cutting nozzle 18 is arranged at the end of the mixed gas pipe 16 far from the mixer 6 and is communicated with the cutting oxygen pipe 17, so that the speed of the mixed gas in the mixed gas pipe 16 sprayed from the cutting nozzle 18 is affected by the oxygen flow rate in the cutting oxygen pipe 17, and when the oxygen flow rate in the cutting oxygen pipe 17 is increased, the flow rate of the mixed gas sprayed from the cutting nozzle 18 is also increased, so as to form a high-speed cutting flame. Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and the equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. A gun body characterized by, It includes: a handle (1), an oxygen pipeline (2) and a gas pipeline (3) are arranged in the handle (1), the oxygen pipeline (2) and the gas pipeline (3) are respectively provided with an oxygen valve (4) and a gas valve (5); a mixer (6) is arranged at the front end of the handle (1), a mixing cavity (7) is arranged in the mixer (6), the mixing cavity (7) is provided with an oxygen inlet end (8), a gas inlet end (9) and a mixed gas outlet end (10), the oxygen inlet end (8) is communicated with the oxygen pipeline (2), the gas inlet end (9) is communicated with the gas pipeline (3); a mixing core (11) is arranged in the mixing cavity (7), the mixing core (11) includes a core rod (111) and a plurality of flow guide units arranged on the core rod (111), the oxygen and the gas entering the mixing cavity (7) are discharged from the mixed gas outlet end (10) after passing through the mixing core (11).

2. A barrel as claimed in claim 1, wherein The flow guide unit includes: a rod sleeve (112) is sleeved on the core rod (111); a plurality of flow guide vanes (113) are uniformly distributed on the circumferential surface of the rod sleeve (112).

3. A barrel as claimed in claim 2, wherein A limiting key is arranged on the inner side of the rod sleeve (112), and a key groove matched with the limiting key is formed on the core rod (111).

4. A barrel as claimed in claim 2, wherein The flow guide vane (113) is arranged obliquely on the rod sleeve (112).

5. A barrel as claimed in claim 1, wherein It also includes an adjusting valve (12) for adjusting the amount of oxygen entering the mixing cavity (7) through the oxygen inlet end (8), the adjusting valve (12) includes a valve body (13), one end of the valve body (13) near the mixing cavity (7) is tapered, the oxygen inlet end (8) is trumpet-shaped, and the valve body (13) gradually closes the oxygen inlet end (8) when moving towards the oxygen inlet end (8).

6. A barrel as claimed in claim 5, wherein The core rod (111) is fixed to one end of the valve body (13) near the mixing cavity (7).

7. A barrel as claimed in claim 5, wherein An installation cavity (14) for installing the valve body (13) is formed on the mixer (6), the oxygen pipeline (2) is communicated with the installation cavity (14), and the installation cavity (14) is communicated with the oxygen inlet end (8).

8. A barrel as claimed in claim 5, wherein The valve body (13) is in a stepped shape, and a sealing ring (15) is arranged on the valve body (13).

9. A barrel as claimed in claim 1, wherein Two adjacent flow guide units are symmetrically arranged on the core rod (111).

10. A gas cutting torch, characterized in that, It includes the gun body as claimed in any one of claims 1-9, and further includes: a mixed gas pipeline (16) connected with the mixed gas outlet end (10); a cutting oxygen pipeline (17) connected with the oxygen pipeline (2); a cutting nozzle (18) arranged at one end of the mixed gas pipeline (16) away from the mixer (6), and the cutting oxygen pipeline (17) is communicated with the cutting nozzle (18).

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