Flame gun handle

Abstract

The utility model provides a flame gun handle, relates to the technical field of flame guns, and aims to solve the technical problems of cost increase and resource waste caused by the fact that a flame gun connecting pipe needs to be detached during replacement in the prior art. A flame gun handle comprises a handle body, the front end of the handle body is connected with a spray pipe, the front end of the spray pipe is in threaded connection with a copper connecting pipe, the front end of the copper connecting pipe is in threaded connection with a spray head, and a fire distributor is connected in the copper connecting pipe. The spray head is used as a fire spraying part at the front end of the connecting pipe in the prior art, only the spray head is replaced instead of the copper connecting pipe and the fire distributor when the spray head needs to be replaced, so that the fire gun handle only needs to be additionally provided with an independent spray head, the waste of the copper connecting pipe and the fire distributor is avoided, and meanwhile, the production cost is also reduced; in addition, the copper connecting pipe is fast in heat dissipation, a certain heat insulation effect can be achieved for the spray head, the service life of the spray head is prolonged, and resource waste is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flamethrowers, in particular to a flamethrower handle. Background Art

[0002] Flamethrower is one of the most common equipment in industrial applications. Pneumatic flamethrower is a flamethrower that uses combustible gas, generally a mixture of hydrogen or acetylene and air, to provide a heat source for people to use. The most common flamethrower consists of a handle, a nozzle, an ignition assembly and a pipe. The nozzle and the ignition assembly are connected to the handle, the front end of the nozzle is connected to the pipe, and the pipe is connected to the ignition divider. When in use, press the button on the handle, the gas enters the airway and is ignited by the ignition assembly, and the flame is ejected from the front end of the pipe. At present, most of the flamethrower pipes and nozzles are not removable. Since different users have different requirements for the front end flamethrower of the pipe, this type of flamethrower cannot meet the requirements of customers in this regard, and the pipes and nozzles of some flamethrowers are removable, but the pipe is connected with a ignition divider inside the pipe. The entire replacement of the pipe needs to be replaced together with the ignition divider, which causes the flamethrower to be equipped with a pipe with a ignition divider, resulting in an increase in cost and a waste of resources. In addition, the existing flamethrower of this type cannot adjust its firepower and cannot meet user needs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model aims to provide a flamethrower handle to solve the technical problem in the prior art that the flamethrower pipe needs to be disassembled to replace the pipe, which increases costs and wastes resources.

[0004] In order to solve the above technical problems, the utility model provides a flamethrower handle, including a handle body, a nozzle connected to the front end of the handle body, a copper pipe threadedly connected to the front end of the nozzle, a nozzle threadedly connected to the front end of the copper pipe, and a fire distributor connected inside the copper pipe.

[0005] After adopting the above structure, the flamethrower handle of the utility model has the following advantages: the pipe in the prior art is divided into a copper pipe and a nozzle, a fire divider is arranged in the copper pipe, and the nozzle serves as the flame-spraying part at the front end of the pipe in the prior art. When replacement is needed, only the nozzle can be replaced without replacing the copper pipe and the fire divider. Therefore, the flamethrower handle only needs to be equipped with a separate nozzle, which will not cause waste of materials such as the copper pipe and the fire divider, and also reduces the production cost; in addition, the copper pipe has fast heat dissipation, can play a certain heat insulation role for the nozzle, improve the service life of the nozzle, and further reduce the waste of resources.

[0006] As an improvement, a first external thread is provided on the outer circumferential wall at the front end of the nozzle, a first internal thread is provided on the inner circumferential wall at the rear end of the copper pipe, the first external thread is threadedly connected to the first internal thread, a second external thread is provided on the outer circumferential wall at the front end of the copper pipe, a second internal thread is provided on the inner circumferential wall at the rear end of the nozzle, and the second external thread is threadedly connected to the second internal thread.

[0007] As an improvement, a first protrusion is provided on the inner wall of the copper pipe, the first internal thread is located on the rear side of the first protrusion, the front end of the nozzle is against the first protrusion, and a second protrusion is provided on the outer wall of the copper pipe, the second external thread is located on the front side of the second protrusion, and the rear end of the nozzle is against the second protrusion; with this structure, the first protrusion and the second protrusion respectively play a limiting role, which facilitates the connection between the nozzle and the copper pipe and the connection between the copper pipe and the nozzle.

[0008] As an improvement, an installation cavity is provided in the handle body, and the installation cavity forms an opening at the front end of the handle body. A mixture gas pipe is connected to the installation cavity. The rear end of the nozzle is located in the installation cavity and connected to the mixture gas pipe. The side wall of the nozzle and the inner wall of the handle body are connected by a pipe position pin. A clamp is clamped in the opening and the clamp is sleeved on the nozzle. This structure has the advantage of convenient connection and makes the connection between the nozzle and the handle body stable.

[0009] As an improvement, the rear end of the nozzle is threadedly connected to the front end of the mixture pipe; this structure has the advantages of simple structure and convenient connection.

[0010] As an improvement, an air inlet duct and a mounting hole are provided in the handle body, the mounting hole is connected to the air inlet duct, and a valve stem is threadedly connected to the inner wall of the mounting hole. One end of the valve stem is exposed outside the handle body and is connected to a knob, and a tapered portion is provided at the other end of the valve stem. The outer diameter of the tapered portion gradually decreases towards the air inlet duct, the maximum diameter of the tapered portion is larger than the inner diameter of the air inlet duct, and the minimum diameter of the tapered portion is smaller than the inner diameter of the air inlet duct. With this structure, the depth of the tapered portion on the valve stem entering the air inlet duct can be changed by turning the knob. After entering the air inlet duct, the tapered portion can block part or all of the connecting opening between the air inlet duct and the mounting hole. According to the different depths of the tapered portion entering the air inlet duct, the area of ​​the connecting opening blocked by the tapered portion is also different, so the gas flow rate can be adjusted, thereby changing the firepower.

[0011] As an improvement, a sealing ring is sleeved on the valve stem, and the outer wall of the sealing ring abuts against the inner wall of the mounting hole; this structure prevents gas leakage from the valve stem.

[0012] As an improvement, a rotation mark is provided on the end surface of the knob away from the handle body; with this structure, the user can confirm the change in firepower corresponding to different rotation directions through the rotation mark, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional view of the utility model.

[0015] Figure 3 for Figure 2 A partial enlarged view of part A in the middle.

[0016] Figure 4 It is a structural schematic diagram of the copper connecting pipe in the utility model.

[0017] Figure 5 It is a structural schematic diagram of the knob in the utility model.

[0018] Figure numerals: 1. handle body; 2. nozzle; 3. copper pipe; 4. nozzle; 5. ignition distributor; 6. first external thread; 7. first internal thread; 8. second external thread; 9. second internal thread; 10. first protrusion; 11. second protrusion; 12. mounting cavity; 13. opening; 14. mixture pipe; 15. pipe position pin; 16. clamp; 17. air inlet; 18. mounting hole; 19. valve stem; 20. knob; 21. tapered portion; 22. sealing ring; 23. rotation mark. DETAILED DESCRIPTION

[0019] The flamethrower handle of the utility model is described in detail below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 5 As shown, a flamethrower handle comprises a handle body 1, and a nozzle 2 is connected to the front end of the handle body 1. Specifically, Figure 2 As shown, a mounting cavity 12 is provided in the handle body 1, and an opening 13 is formed at the front end of the handle body 1. A mixed gas pipe 14 is connected to the mounting cavity 12. The specific connection structure between the mixed gas pipe 14 and the handle body 1 is the prior art and will not be repeated here. The rear end of the nozzle 2 is located in the mounting cavity 12 and connected to the mixed gas pipe 14. In this embodiment, the rear end of the nozzle 2 is threadedly connected to the front end of the mixed gas pipe 14. The side wall of the nozzle 2 is connected to the inner wall of the handle body 1 through a pipe position pin 15, that is, the pipe position pin 15 is vertically arranged, the upper end of the pipe position pin 15 is inserted into the inner wall of the handle body 1, and the lower end is inserted into the side wall of the nozzle 2. In addition, a clamp 16 is clamped in the opening 13 and the clamp 16 is sleeved on the nozzle 2.

[0021] like Figure 1 and Figure 2As shown, the front end of the nozzle 2 is threadedly connected to a copper pipe 3, the front end of the copper pipe 3 is threadedly connected to a nozzle 4, and the copper pipe 3 is internally connected to an ignition distributor 5; specifically, a first external thread 6 is provided on the outer peripheral wall of the front end of the nozzle 2, a first internal thread 7 is provided on the inner peripheral wall of the rear end of the copper pipe 3, the first external thread 6 is threadedly connected to the first internal thread 7, a second external thread 8 is provided on the outer peripheral wall of the front end of the copper pipe 3, a second internal thread 9 is provided on the inner peripheral wall of the rear end of the nozzle 4, and the second external thread 8 is threadedly connected to the second internal thread 9; in addition, as Figure 2 and Figure 4 As shown, a first protrusion 10 is provided on the inner wall of the copper pipe 3, the first internal thread 7 is located at the rear side of the first protrusion 10, the front end of the nozzle 2 is against the first protrusion 10, a second protrusion 11 is provided on the outer wall of the copper pipe 3, the second external thread 8 is located at the front side of the second protrusion 11, and the rear end of the nozzle 4 is against the second protrusion 11, wherein the first protrusion 10 and the second protrusion 11 are obtained by directly processing the first internal thread 7 and the second external thread 8 respectively.

[0022] like Figure 2 and Figure 3 As shown, an air inlet 17 and a mounting hole 18 are provided in the handle body 1, and the mounting hole 18 is connected to the air inlet 17. In this embodiment, the air inlet 17 and the mounting hole 18 are both vertically arranged, and the mounting hole 18 is located above the air inlet 17. A valve stem 19 is threadedly connected to the inner wall of the mounting hole 18. One end of the valve stem 19 is exposed outside the handle body 1 and is connected to a knob 20. A tapered portion 21 is provided at the other end of the valve stem 19. Specifically, the upper end of the valve stem 19 is exposed outside the handle body 1, and the lower end of the valve stem 19 is integrally formed with a tapered portion 21, and the outer diameter of the tapered portion 21 is closer to the air inlet. The diameter of the conical portion 21 gradually decreases in the direction of the air inlet 17. The maximum diameter of the conical portion 21 is greater than the inner diameter of the air inlet 17, and the minimum diameter of the conical portion 21 is less than the inner diameter of the air inlet 17. By turning the knob 20, the depth of the conical portion 21 on the valve stem 19 entering the air inlet 17 can be changed. After the conical portion 21 enters the air inlet 17, it can block a part or all of the connecting opening between the air inlet 17 and the mounting hole 18. According to the different depths of the conical portion 21 entering the air inlet 17, the area of ​​the connecting opening blocked by the conical portion 21 is also different, so the gas flow rate can be adjusted, thereby changing the firepower. In addition, a sealing ring 22 is sleeved on the valve stem 19, and the outer wall of the sealing ring 22 is against the inner wall of the mounting hole 18, and the sealing ring 22 is located above the conical portion 21. Figure 5 As shown, a rotation mark 23 is provided on the end surface of the knob 20 away from the handle body 1. The rotation mark 23 is protrudingly arranged on the upper end surface of the knob 20, including an arc protrusion and positive and negative protrusions, so as to indicate the change in firepower corresponding to different rotation directions.

[0023] The utility model divides the pipe in the prior art into a copper pipe 3 and a nozzle 4, a ignition divider 5 is arranged in the copper pipe 3, and the nozzle 4 serves as the flame spraying part at the front end of the pipe in the prior art. When replacement is needed, only the nozzle 4 can be replaced without replacing the copper pipe 3 and the ignition divider 5. Therefore, the handle of the flamethrower gun only needs to be equipped with a separate nozzle 4, which will not cause waste of materials of the copper pipe 3 and the ignition divider 5, and also reduces the production cost. For example, when the nozzle 4 becomes black after long-term use or even cannot be used normally, a new nozzle 4 can be replaced, or if the user wants to use a nozzle 4 of different size and shape, only another nozzle 4 can be replaced. In addition, the copper pipe 3 dissipates heat quickly, can play a certain heat insulation role for the nozzle 4, improves the service life of the nozzle 4, and further reduces the waste of resources.

[0024] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned one implementation mode, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A flamethrower handle, characterized in that: The handle body (1) comprises a nozzle (2) connected to the front end of the handle body (1), a copper pipe (3) threadedly connected to the front end of the nozzle pipe (2), a nozzle (4) threadedly connected to the front end of the copper pipe (3), and a ignition distributor (5) connected inside the copper pipe (3); The handle body (1) is provided with a mounting cavity (12), the mounting cavity (12) forming an opening (13) at the front end of the handle body (1), the mounting cavity (12) being connected to a mixed gas pipe (14), the rear end of the nozzle (2) being located in the mounting cavity (12) and connected to the mixed gas pipe (14), the side wall of the nozzle (2) being connected to the inner wall of the handle body (1) via a pipe position pin (15), a clamp (16) being clamped in the opening (13) and the clamp (16) being sleeved on the nozzle (2).

2. The flamethrower handle according to claim 1, characterized in that: A first external thread (6) is provided on the outer peripheral wall of the front end of the nozzle (2), a first internal thread (7) is provided on the inner peripheral wall of the rear end of the copper pipe (3), the first external thread (6) is threadedly connected to the first internal thread (7), a second external thread (8) is provided on the outer peripheral wall of the front end of the copper pipe (3), a second internal thread (9) is provided on the inner peripheral wall of the rear end of the nozzle (4), the second external thread (8) is threadedly connected to the second internal thread (9).

3. The flamethrower handle according to claim 2, characterized in that: A first protrusion (10) is provided on the inner wall of the copper pipe (3), the first internal thread (7) is located at the rear side of the first protrusion (10), the front end of the nozzle (2) abuts against the first protrusion (10), a second protrusion (11) is provided on the outer wall of the copper pipe (3), the second external thread (8) is located at the front side of the second protrusion (11), and the rear end of the nozzle (4) abuts against the second protrusion (11).

4. The flamethrower handle according to claim 1, characterized in that: The rear end of the nozzle (2) is threadedly connected to the front end of the mixed gas pipe (14).

5. The flamethrower handle according to claim 1, characterized in that: An air inlet (17) and a mounting hole (18) are provided in the handle body (1), the mounting hole (18) being connected to the air inlet (17), a valve stem (19) being threadedly connected to the inner wall of the mounting hole (18), one end of the valve stem (19) being exposed outside the handle body (1) and being connected to a knob (20), and a conical portion (21) being provided at the other end of the valve stem (19), the outer diameter of the conical portion (21) gradually decreasing towards the air inlet (17), the maximum diameter of the conical portion (21) being larger than the inner diameter of the air inlet (17), and the minimum diameter of the conical portion (21) being smaller than the inner diameter of the air inlet (17).

6. The flamethrower handle according to claim 5, characterized in that: A sealing ring (22) is sleeved on the valve stem (19), and an outer wall of the sealing ring (22) abuts against an inner wall of the mounting hole (18).

7. The flamethrower handle according to claim 5, characterized in that: A rotation mark (23) is provided on the end surface of the knob (20) away from the handle body (1).

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