Fire-jet head of windproof pressurizing liquefied gas spray gun

Abstract

The utility model belongs to the technical field of spray guns, and relates to a fire-jet head of a windproof pressurized liquefied gas spray gun, which comprises a barrel and a connecting piece arranged at the rear end of the barrel, air inlets for conveying air are arranged on the barrel, at least one of the air inlets is provided with a folding sheet, and the folding sheet is provided with an air inlet. One side of the folding piece is a folding edge connected with the cylinder body, the other side of the folding piece is a broken edge separated from the cylinder body, the folding piece is bent inwards along the folding edge and shields part of the air inlet, and a gap between the folding piece and the cylinder body forms an inclined air inlet channel. The fire-jet head of the windproof pressurizing liquefied gas spray gun has the advantages of being simple in structure, convenient to machine, large in fire power and good in windproof effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of spray guns and relates to a windproof pressurized liquefied gas spray gun flame spray head. Background Art

[0002] The liquefied gas flamethrower is a heating tool that uses liquefied gas as fuel. If used correctly, it can reach a high temperature of 1300°. It has the advantages of low cost, safety, convenience, no pollution, and stable performance. It is widely used in occasions that require flame or heating.

[0003] In order to deal with the problem of insufficient combustion-supporting gas in liquefied gas spray guns, which affects the operation of the spray guns, existing liquefied gas spray guns usually have circumferential through holes on the nozzles as air inlets to supply sufficient combustion-supporting gas. For example:

[0004] Chinese utility model patent CN2371446Y (publication date 2000-03-29) is a liquefied gas flamethrower, characterized in that it includes a flamethrower tube, a gas supply hole opened on the tube wall of the flamethrower tube, and a gas supply pipe connected to the flamethrower tube, the gas supply pipe is connected to a handle, and the handle is provided with a knob switch for adjusting the gas flow of the gas supply pipe, the rear end of the handle is connected to the front end of the rubber tube through a front pipe joint, and the rear end of the rubber tube is connected to the liquefied gas tank port connecting device through a rear pipe joint.

[0005] The disadvantage of this air intake structure is that when the outdoor wind is strong, the airflow entering from the air intake may blow out the fire, especially during the ignition stage of the spray gun, or when the fire is turned down during the intermittent stage of use. Utility Model Content

[0006] The utility model aims at the deficiencies of the prior art and provides a windproof pressurized liquefied gas spray gun flame spray head, which has the advantages of simple structure, convenient processing, high firepower and good windproof effect.

[0007] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0008] A windproof pressurized liquefied gas spray gun flame spray head, the flame spray head comprising a barrel and a connecting piece arranged at the rear end of the barrel, the barrel is provided with an air inlet for conveying air, at least one air inlet is provided with a folding piece, one side of the folding piece is a folded edge connected to the barrel, and the other side is a broken edge separated from the barrel, the folding piece is bent inwardly along the folded edge and blocks part of the air inlet, and the gap between the folding piece and the barrel forms an inclined air inlet channel.

[0009] In the above-mentioned windproof pressurized liquefied gas spray gun flame head, the air inlet is arranged in multiple directions, and each air inlet is provided with a flap, and the bending directions of all flaps are the same. The air is guided by the air inlet channel and converges into a forward airflow. Of course, flaps can also be provided only at one or part of the air inlets, and the air inlet with the flap structure can be directed toward the wind direction when in use. Preferably, the angle between the flap and the air inlet is 30°-60°.

[0010] In the above-mentioned windproof pressurized liquefied gas spray gun flame head, the folding piece is formed by cutting and bending a part of the cylinder body, and the corresponding air inlet is formed after the cylinder body is cut, and the shape of the air inlet is the same as the shape of the folded edge.

[0011] In the above-mentioned windproof pressurized liquefied gas spray gun flame head, the air inlet and the folding piece are quasi-rectangular, the folding edge is a straight edge, and the broken edge is a straight edge or an arc edge. In the present utility model, the quasi-rectangular refers to a rectangle as the basic shape, but the edges of the rectangle can be replaced by oblique edges or arc edges.

[0012] In the present invention, the flap and the air inlet can be arranged in a variety of ways:

[0013] In the above-mentioned windproof pressurized liquefied gas spray gun flame spray head, the long side of the air inlet is arranged axially, and the folded edge is arranged on the rear side, upper side or lower side of the folded piece.

[0014] In the above-mentioned windproof pressurized liquefied gas spray gun flame spray head, the short side of the air inlet is arranged axially, and the folded edge is arranged on the upper side or the lower side of the folded piece.

[0015] In the above-mentioned windproof pressurized liquefied gas spray gun flame head, the air inlet is arranged obliquely relative to the axis, the folded edge is arranged on the rear side of the folded piece, and the air is guided by the air inlet channel and converges into a forward spiral airflow. Preferably, the axial angle of the long side of the air inlet is 30°-60°.

[0016] In the above-mentioned windproof pressurized liquefied gas spray gun flame spray head, the front end of the barrel is curled inwardly or outwardly to form a curling structure.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model provides a windproof liquefied gas spray gun. By setting a folding piece that partially blocks the air inlet, it can prevent the airflow from blowing directly toward the flame in the radial direction and blowing out the fire. This solves the windproof problem of the liquefied gas spray gun. In addition, the folding piece of the utility model can be formed by cutting and bending the barrel, which is very convenient to process.

[0019] 2. Furthermore, the utility model can guide the airflow by setting flaps in a specific direction, and the air is guided to converge at the axis after passing through the air inlet channel and forms a forward airflow. The pressurization effect of the directional airflow can significantly increase the firepower of the liquefied gas spray gun and make it difficult to extinguish.

[0020] 3. Furthermore, the utility model can form a special guiding effect by setting up an inclined air inlet and a flap matched therewith, and the air is guided by the air inlet channel and converged into a forward spiral airflow. The flap of this structure can increase the stability and convergence of the forward flow of the airflow, thereby further increasing the firepower and combustion stability of the liquefied gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of embodiment 1 of the utility model;

[0022] Figure 2 This is a front view of Embodiment 1 of the present utility model;

[0023] Figure 3 It is a front view of Embodiment 1 of the present utility model;

[0024] Figure 4 is an axial cross-sectional view of Embodiment 1 of the present utility model;

[0025] Figure 5 It is a stereogram of Embodiment 2 of the present utility model;

[0026] Figure 6 It is a three-dimensional diagram of embodiment 3 of the utility model;

[0027] Figure 7 It is a three-dimensional diagram of Embodiment 4 of the present utility model;

[0028] Figure 8 It is a three-dimensional diagram of embodiment 5 of the utility model;

[0029] Fig. 9 It is a stereogram of Embodiment 6 of the present utility model;

[0030] Fig.10 It is a stereogram of Embodiment 7 of the present utility model;

[0031] Fig.11 This is a front view of Embodiment 7 of the present utility model;

[0032] Fig.12 It is a front view of Embodiment 7 of the present utility model;

[0033] Fig.13 is an axial cross-sectional view of Example 7 of the present utility model;

[0034] Fig.14It is a three-dimensional diagram of Embodiment 8 of the present utility model;

[0035] Figure numerals: 1, cylinder; 2, connecting piece; 3, air inlet; 4, folding piece; 41, folded edge; 42, broken edge; 5, air inlet channel; 6, rolled edge structure. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings. Figure 1-14 :

[0037] Example 1

[0038] Compare with Figure 1 To Attachment Figure 4 A windproof pressurized liquefied gas spray gun flame head, the flame head comprises a barrel 1 and a connecting piece 2 arranged at the rear end of the barrel 1, the barrel 1 is provided with an air inlet 3 for conveying air, at least one air inlet 3 is provided with a folding piece 4, one side of the folding piece 4 is a folded edge 41 connected to the barrel 1, and the other side is a broken edge 42 separated from the barrel 1, the folding piece 4 is bent inwardly along the folded edge 41 and blocks part of the air inlet 3, and the gap between the folding piece 4 and the barrel 1 forms an inclined air inlet channel 5.

[0039] In this embodiment, the air inlet 3 is provided with a plurality of circumferential portions, and each air inlet 3 is provided with a corresponding flap 4, and the bending directions and angles of all flaps 4 are the same, and the air is guided by the air inlet channel 5 and converges into a forward airflow. Preferably, the angle between the flap 4 and the air inlet 3 is 30°-60°.

[0040] In this embodiment, the folding piece 4 is formed by cutting and bending a part of the cylinder 1 , and the corresponding air inlet 3 is formed after the cylinder 1 is cut. The shape of the air inlet 3 is the same as the shape of the folded edge 41 .

[0041] In this embodiment, the long side of the air inlet 3 is arranged along the axial direction, and the folded edge 41 is arranged on the rear side of the flap 4. The air inlet 3 and the flap 4 are rectangular, the folded edge 41 is a straight edge, the upper and lower broken edges 42 are straight edges, and the front broken edge 42 is an arc edge.

[0042] When in use, air enters the cylinder 1 through the air inlet 3, and the airflow flows inward along the folded edge 41. Due to the guiding effect of the folded edge 41, the airflow converges obliquely upward and finally converges into a forward airflow along the axis. The pressurized airflow with the above specific flow direction can not only play a role in wind protection, but also play a role in increasing firepower.

[0043] Example 2

[0044] Compare with Figure 5, which is different from Embodiment 1, in this embodiment, the long side of the air inlet 3 is arranged along the axial direction, and the folded edge 41 is arranged on the lower side of the flap 4. The air inlet 3 and the flap 4 are rectangular, the folded edge 41 is a straight edge, the upper broken edge 42 is a straight edge, and the broken edges 42 on the front and rear sides are arc edges.

[0045] Example 3

[0046] Compare with Figure 6 , which is different from Embodiment 1, in this embodiment, the short side of the air inlet 3 is arranged along the axial direction, and the folded edge 41 is arranged on the lower side of the flap 4. The air inlet 3 and the flap 4 are rectangular, the folded edge 41 is a straight edge, the upper broken edge 42 is an arc edge, and the broken edges 42 on both sides of the front and rear are straight edges.

[0047] Example 4

[0048] Compare with Figure 7 , which is different from Embodiment 6 in that, in this embodiment, the front end of the cylinder 1 is curled outward to form a curling structure 6. The curling structure 6 can enhance the structural strength of the cylinder 1, especially the opening.

[0049] Example 5

[0050] Compare with Figure 8 , which is different from Example 6 in that, in this embodiment, the short side of the air inlet 3 is arranged along the axial direction, and the folded edge 41 is arranged on the upper side of the flap 4. The air inlet 3 and the flap 4 are rectangular, the folded edge 41 is a straight edge, the lower broken edge 42 is an arc edge, and the broken edges 42 on the front and rear sides are straight edges. In this embodiment, the front end of the cylinder 1 is curled inward to form a curling structure 6. The curling structure 6 can enhance the structural strength of the cylinder 1, especially the opening.

[0051] Example 6

[0052] Compare with Fig. 9 , which is different from Embodiment 1, in this embodiment, the long side of the air inlet 3 is arranged along the axial direction, and the folded edge 41 is arranged on the upper side of the flap 4. The air inlet 3 and the flap 4 are rectangular, the folded edge 41 is a straight edge, the lower side broken edge 42 is a straight edge, and the front and rear side broken edges 42 are arc edges.

[0053] Example 7

[0054] Compare with Fig.10 To Attachment Fig.13A windproof pressurized liquefied gas spray gun flame head, the flame head comprises a barrel 1 and a connecting piece 2 arranged at the rear end of the barrel 1, the barrel 1 is provided with an air inlet 3 for conveying air, at least one air inlet 3 is provided with a folding piece 4, one side of the folding piece 4 is a folded edge 41 connected to the barrel 1, and the other side is a broken edge 42 separated from the barrel 1, the folding piece 4 is bent inwardly along the folded edge 41 and blocks part of the air inlet 3, and the gap between the folding piece 4 and the barrel 1 forms an inclined air inlet channel 5.

[0055] In this embodiment, the air inlet 3 is provided with a plurality of circumferential portions, and each air inlet 3 is provided with a corresponding flap 4, and the bending directions and angles of all flaps 4 are the same, and the air is guided by the air inlet channel 5 and converges into a forward airflow. Preferably, the angle between the flap 4 and the air inlet 3 is 30°-60°.

[0056] In this embodiment, the folding piece 4 is formed by cutting and bending a part of the cylinder 1 , and the corresponding air inlet 3 is formed after the cylinder 1 is cut. The shape of the air inlet 3 is the same as the shape of the folded edge 41 .

[0057] In this embodiment, the air inlet 3 is arranged obliquely relative to the axis, the folded edge 41 is arranged on the rear side of the folded sheet 4, and the air is guided by the air inlet channel 5 to converge into a forward spiral airflow. Preferably, the axial angle of the long side of the air inlet 3 is 30°-60°.

[0058] When in use, air enters the barrel 1 through the air inlet 3, and the airflow flows inward along the folded edge 41. Due to the guiding effect of the folded edge 41, the airflow is gathered obliquely upward and deflected around the axis, and finally converges into a forward spiral airflow along the axis. The pressurized airflow with the above-mentioned specific flow direction can not only play a role in wind protection, but also play a role in increasing firepower, and can also enhance the stability and convergence of the airflow flowing forward.

[0059] Example 8

[0060] Compare with Fig.14 , which is different from Example 7, in this embodiment, the inclination directions of the air inlet 3 and the flap 4 are different, so that the airflow has different spiral rotation directions.

[0061] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A windproof pressurized liquefied gas spray gun flame spray head, the flame spray head comprising a barrel (1) and a connecting piece (2) arranged at the rear end of the barrel (1), the barrel (1) being provided with an air inlet (3) for conveying air, characterized in that: A folding sheet (4) is provided at at least one air inlet (3); one side of the folding sheet (4) is a folded edge (41) connected to the cylinder (1), and the other side is a broken edge (42) separated from the cylinder (1); the folding sheet (4) is bent inwardly along the folded edge (41) and blocks part of the air inlet (3); and the gap between the folding sheet (4) and the cylinder (1) forms an inclined air inlet channel (5).

2. A windproof pressurized liquefied gas spray gun flame head according to claim 1, characterized in that: A plurality of air inlets (3) are circumferentially arranged, each air inlet (3) is correspondingly provided with a folding sheet (4), and the bending directions of all the folding sheets (4) are the same.

3. A windproof pressurized liquefied gas spray gun flame head according to claim 2, characterized in that: The folding sheet (4) is formed by cutting and bending a portion of the cylinder (1), and the cylinder (1) is cut to form a corresponding air inlet (3), and the shape of the air inlet (3) is the same as the shape of the folded edge (41).

4. A windproof pressurized liquefied gas spray gun flame head according to claim 3, characterized in that: The long side of the air inlet (3) is arranged along the axial direction, and the folded edge (41) is arranged on the rear side, the upper side or the lower side of the folded sheet (4).

5. The windproof pressurized liquefied gas spray gun flame head according to claim 3, characterized in that: The short side of the air inlet (3) is arranged along the axial direction, and the folded edge (41) is arranged on the upper side or the lower side of the folded sheet (4).

6. A windproof pressurized liquefied gas spray gun flame head according to claim 3, characterized in that: The air inlet (3) is arranged obliquely relative to the axis, and the folded edge (41) is arranged at the rear side of the folded sheet (4) corresponding to the short side of the air inlet (3). After being guided by the air inlet channel (5), the air converges into a forward spiral airflow.

7. A windproof pressurized liquefied gas spray gun flame head according to claim 1, characterized in that: The front end of the cylinder (1) is curled inwards or outwards to form a curling structure (6).

8. The windproof pressurized liquefied gas spray gun flame head according to claim 1, characterized in that: The air inlet (3) and the folded sheet (4) are quasi-rectangular, the folded edge (41) is a straight edge, and the broken edge (42) is a straight edge or an arc edge.

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