Gun head of flame gun

Abstract

The utility model belongs to the technical field of flame guns, and particularly relates to a flame gun head which comprises a gas source connector, a flame tube, a connecting shell, a piezoelectric igniter and a button. The fire spraying pipe comprises a connecting pipe and a gas outlet pipe with a nozzle formed at the end part; the connecting shell is connected with the connecting pipe and the air outlet pipe, one end is provided with an air inlet, and the other end forms a mixing cavity; an extension part internally provided with a mounting cavity is arranged on the side face of the connecting shell, the piezoelectric igniter is located in the mounting cavity, and an ignition wire arranged on the piezoelectric igniter extends into the gas outlet pipe; the button is slidably connected to the mounting cavity and used for being stressed to trigger the piezoelectric igniter. According to the structure, the connecting shell is arranged on the flame spraying pipe, the extension part is formed on the side face of the connecting shell so that the piezoelectric igniter can be installed in the installation cavity of the extension part, the button serves as a sealing cover of the installation cavity, the installation position of an ignition device of a traditional flame spraying gun is moved out of a main body, and the convenience of maintenance and replacement of the piezoelectric igniter is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of flamethrower technology, and in particular relates to a flamethrower nozzle. Background Technology

[0002] A flamethrower is a tool that generates a high-temperature flame by igniting a continuously ejected fuel gas. It is used for heating, welding, cutting, ignition, and other purposes. It is widely used in industrial, household, and outdoor settings. It is usually directly connected to a fuel tank or connected to a gas hose via an adapter before being connected to a fuel tank.

[0003] Traditional flamethrower nozzles often require a lighter to ignite, which is inconvenient. Some flamethrower nozzles have built-in ignition devices, such as a new type of cartridge flamethrower disclosed in Chinese patent application number (2024212799298), in which the ignition device is integrated inside the main body. However, the maintenance and replacement of the ignition device is inconvenient and needs improvement. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a flamethrower nozzle that improves the ease of maintenance and replacement of the ignition device in the flamethrower nozzle.

[0005] In view of this, the present invention provides a flamethrower nozzle, comprising:

[0006] The gas source connector is equipped with an adjustment device for regulating the amount of gas supplied.

[0007] A flamethrower tube includes a connecting pipe for discharging fuel gas from a gas source connector and an outlet pipe with a nozzle formed at its end.

[0008] The connecting shell is connected to the connecting pipe and the air outlet pipe at both ends, and an air inlet is opened at one end, while a mixing chamber is formed at the other end;

[0009] The piezoelectric igniter has an extension on the side of the connecting housing, and an installation cavity is formed in the extension;

[0010] The button is slidably connected to the end of the mounting cavity away from the connecting housing and is used to trigger the piezoelectric igniter under force.

[0011] The piezoelectric igniter is equipped with an ignition wire that extends into the gas outlet pipe.

[0012] In the above technical solution, further:

[0013] The mounting cavity has a through hole on the inner wall near the connecting housing that is compatible with the ignition wire, and the through hole connects the mounting cavity and the connecting housing respectively.

[0014] The through hole and the mixing chamber are formed at an acute angle.

[0015] In the above technical solution, further:

[0016] The inner wall of the mounting cavity is provided with a threaded hole, and a limit bolt is installed in the threaded hole;

[0017] The button has a groove that matches the limit bolt.

[0018] In the above technical solution, further:

[0019] The mixing chamber includes a primary mixing chamber and a swirling chamber. A torsion guide is installed in the swirling chamber to divide the mixed airflow into multiple streams and cause each stream to rotate and flow.

[0020] In the above technical solution, further:

[0021] The tortuous guide is provided with a limiting frame at one end near the initial mixing chamber and a first fixing frame at the other end;

[0022] The first fixing frame is detachably connected to the connecting housing.

[0023] Furthermore, the above technical solution also includes:

[0024] The fan blade is installed inside the air outlet pipe, and a second fixing bracket is formed near the end of the connecting housing;

[0025] The fan blades are multiple and are all inclined and distributed at equal intervals around the circumference. The second fixed frame has multiple air holes corresponding to the fan blades, which are used to guide the mixed gas to flow to the fan blades and cause the gas to form a rotating airflow under the action of the fan blades.

[0026] In the above technical solution, further:

[0027] The connecting housing has an external thread at one end near the vent pipe, while the vent pipe has an internal thread that matches the external thread at one end near the connecting housing.

[0028] In the above technical solution, further:

[0029] The connecting pipe has a bent section.

[0030] The beneficial effects of this utility model are as follows:

[0031] 1. By setting a connecting housing on the flame tube and forming an extension on the side of the connecting housing, the piezoelectric igniter is installed in the mounting cavity of the extension, and the button acts as a cover for the mounting cavity. This moves the installation position of the traditional flame gun ignition device out of the main body, which can effectively improve the convenience of maintenance and replacement of the piezoelectric igniter.

[0032] 2. By opening a through hole in the inner wall of the mounting cavity, the ignition wire of the piezoelectric igniter can be extended from the inside to the gas outlet pipe, improving the aesthetics of the appearance structure. Furthermore, by opening the through hole at an acute angle to the mixing cavity, the possibility of the mixed gas flowing in the mixing cavity entering the mounting cavity through the through hole can be effectively reduced.

[0033] 3. By opening threaded holes in the inner wall of the mounting cavity and connecting limit bolts inside the threaded holes and matching sliding grooves on the button, not only can the sliding of the button be restricted, improving stability and preventing the button from falling off, but also, during disassembly, only the limit bolts need to be removed to remove the button and piezoelectric igniter, further improving the convenience of maintenance and replacement of the piezoelectric igniter.

[0034] 4. By dividing the mixing chamber into a primary mixing chamber and a swirling chamber, and installing a torsion guide in the swirling chamber, the mixing effect between fuel gas and air can be effectively improved, thereby ensuring complete combustion and a stable and strong flame, and improving flame quality. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of this utility model;

[0036] Figure 2 This is a side view of the present invention;

[0037] Figure 3 This is a utility model Figure 2 Sectional view at point AA;

[0038] Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle;

[0039] Figure 5 This is a schematic diagram of the structure of the fan blade of this utility model;

[0040] Figure 6 This is a schematic diagram of the structure of the torsion guide component of this utility model when it has two guide channels;

[0041] Figure 7 This is a schematic diagram of the structure of the torsion guide component of this utility model when it has three guide channels;

[0042] Figure 8 This is a structural diagram of the torsion guide component of this utility model when it has four guide channels;

[0043] The markings in the diagram represent: 1. Air source connector; 2. Adjustment device; 3. Flame tube; 30. Connecting pipe; 31. Nozzle; 32. Air outlet pipe; 33. Bend section; 4. Connecting housing; 5. Air inlet; 6. Mixing chamber; 60. Initial mixing chamber; 61. Swirl chamber; 7. Piezoelectric igniter; 8. Extension; 9. Mounting chamber; 10. Button; 11. Ignition wire; 12. Through hole; 13. Threaded hole; 14. Limiting bolt; 15. Slide groove; 16. Twisting guide; 17. Limiting bracket; 18. First fixing bracket; 19. Fan blade; 20. Second fixing bracket; 21. Air hole. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0045] Example 1:

[0046] This embodiment provides a flamethrower nozzle, including:

[0047] Gas source connector 1 is equipped with a regulating device 2 for adjusting the amount of gas supplied;

[0048] The flame tube 3 includes a connecting pipe 30 connected to the gas source connector 1 for the discharge of fuel gas and an outlet pipe 32 with a nozzle 31 formed at the end.

[0049] The connecting housing 4 is connected to the connecting pipe 30 and the air outlet pipe 32 at both ends, and has an air inlet 5 at one end and a mixing chamber 6 at the other end.

[0050] The piezoelectric igniter 7 has an extension 8 on the side of the connecting housing 4, and an installation cavity 9 is formed in the extension 8;

[0051] Button 10 is slidably connected to the end of the mounting cavity 9 away from the connecting housing 4, and is used to trigger the piezoelectric igniter 7 under force;

[0052] The piezoelectric igniter 7 is equipped with an ignition wire 11 that extends into the gas outlet pipe 32.

[0053] Meanwhile, multiple air inlets 5 can be used, such as two in this application, which are symmetrically arranged.

[0054] Furthermore, the specific structures of the adjusting device 2 and the piezoelectric igniter 7 are existing technologies, which are known to those skilled in the art from conventional flamethrowers and piezoelectric igniters 7, and will not be elaborated here.

[0055] As can be seen from this embodiment, by setting a connecting housing 4 on the flame tube 3 and forming an extension 8 on the side of the connecting housing 4, the piezoelectric igniter 7 is installed in the mounting cavity 9 of the extension 8, and the button 10 is used as a cover for the mounting cavity 9. The installation position of the traditional flame gun ignition device is moved out of the main body, which can effectively improve the convenience of maintenance and replacement of the piezoelectric igniter 7.

[0056] Example 2:

[0057] This embodiment provides a flamethrower nozzle, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0058] The mounting cavity 9 has a through hole 12 on the inner wall near the connecting housing 4, which is adapted to the ignition wire 11, and the through hole 12 connects the mounting cavity 9 and the connecting housing 4 respectively.

[0059] The through hole 12 is formed at an acute angle to the mixing chamber 6; specifically, this application uses a 45° angle.

[0060] As can be seen from this embodiment, by opening a through hole 12 on the inner wall of the mounting cavity 9, the ignition wire 11 on the piezoelectric igniter 7 can be extended from the inside to the gas outlet pipe 32, improving the aesthetics of the appearance structure. Furthermore, by opening the through hole 12 at an acute angle to the mixing cavity 6, the possibility of the mixed gas in the mixing cavity 6 entering the mounting cavity 9 through the through hole 12 during its flow can be effectively reduced.

[0061] Example 3:

[0062] This embodiment provides a flamethrower nozzle, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0063] A threaded hole 13 is provided on the inner wall of the mounting cavity 9, and a limit bolt 14 is installed in the threaded hole 13;

[0064] The button 10 has a groove 15 that is adapted to the limit bolt 14.

[0065] As can be seen from this embodiment, by opening a threaded hole 13 on the inner wall of the mounting cavity 9, and by connecting a limiting bolt 14 in the threaded hole 13 and a sliding groove 15 on the button 10 that is adapted to it, not only can the sliding of the button 10 be restricted, thus improving stability and preventing the button 10 from falling off, but also, when disassembling, only the limiting bolt 14 needs to be removed to remove the button 10 and the piezoelectric igniter 7, further improving the convenience of maintenance and replacement of the piezoelectric igniter 7.

[0066] Example 4:

[0067] This embodiment provides a flamethrower nozzle, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0068] The mixing chamber 6 includes a primary mixing chamber 60 and a swirling chamber 61. A torsion guide 16 is installed in the swirling chamber 61 to divide the mixed airflow into multiple streams and cause each stream to rotate and flow.

[0069] The torsion guide 16 can have multiple guide channels. This application uses two guide channels, but multiple guide channels can be provided if needed (as shown in the attached figure). Figures 6-8 However, it should not be too much, as it can easily affect the output of the mixed gas, and thus affect the flame quality of the flame gun.

[0070] As can be seen from this embodiment, by dividing the mixing chamber 6 into a primary mixing chamber 60 and a swirling chamber 61, and installing a torsion guide 16 in the swirling chamber 61, the mixing effect between fuel gas and air can be effectively improved, thereby improving the completeness and efficiency of flame combustion and ensuring flame quality.

[0071] Furthermore, the twisted guide 16 needs to have a smooth surface, which not only ensures the flow stability of the mixed gas, but also facilitates the ignition wire 11 of the piezoelectric igniter 7 to pass through the through hole 12 and extend along the twisted guide 16 to the gas outlet pipe 32.

[0072] Example 5:

[0073] This embodiment provides a flamethrower nozzle, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0074] The tortuous guide 16 is provided with a limiting frame 17 at one end near the initial mixing chamber 60 and a first fixing frame 18 at the other end;

[0075] The first fixing bracket 18 is detachably connected to the connecting housing 4, specifically by screw fastening.

[0076] As can be seen from this embodiment, the positioning accuracy and installation stability of the torsion guide 16 can be improved by the limiting frame 17, and the first fixing frame 18 and the connecting housing 4 are detachably connected, which can improve the convenience of installing and removing the torsion guide 16.

[0077] Example 6:

[0078] This embodiment provides a flamethrower nozzle, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and further includes:

[0079] The fan blade 19 is installed inside the air outlet pipe 32, and a second fixing bracket 20 is provided at one end near the connecting housing 4;

[0080] The fan blades 19 are multiple and are all inclined and distributed at equal intervals around the circumference. The second fixed frame 20 has multiple air holes 21 corresponding to the fan blades 19, which are used to guide the mixed gas to flow to the fan blades 19 and cause the gas to form a rotating airflow under the action of the fan blades 19. The fan blades 19 in this application are four and are inclined at 35°. However, in actual applications, the number and inclination angle of the fan blades 19 can be changed.

[0081] Furthermore, the second fixing bracket 20 and the inner wall of the air outlet pipe 32 are fitted with an interference fit.

[0082] As can be seen from this embodiment, by installing the fan blade 19, the outflow of the mixed gas can be controlled within a certain range, and the flame expansion range and shape at the nozzle 31 can be changed. For example, if the fan blade 19 is designed to make the airflow rotate at high speed, the flame will present a wider conical or fan shape, which is suitable for large-area heating; if the rotation intensity is lower, the flame is more concentrated, which is suitable for local precision heating. At the same time, the rotating airflow forms a vortex in the outlet pipe 32, which allows the fuel gas and air to fully contact each other in a turbulent state, which can further improve the mixing effect of the mixed gas, thereby improving the completeness and efficiency of flame combustion and ensuring flame quality.

[0083] The multiple air holes 21 on the second fixed frame 20, which correspond to the fan blades 19, can ensure that the mixed gas is guided from the air holes 21 to the fan blades 19 and rotates under the action of the fan blades 19.

[0084] Example 7:

[0085] This embodiment provides a flamethrower nozzle, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0086] The connecting housing 4 has an external thread at one end near the vent pipe 32, while the vent pipe 32 has an internal thread that matches the external thread at one end near the connecting housing 4.

[0087] As can be seen from this embodiment, by opening the external thread on the connecting housing 4 and the internal thread on the gas outlet pipe 32, it is convenient to install and disassemble the gas outlet pipe 32, thereby improving the ease of installation of each component, such as the twist guide 16. Furthermore, when installing the ignition wire 11 of the piezoelectric igniter 7, the gas outlet pipe 32 is removed first, the ignition wire 11 is passed through the connecting housing 4, and then the gas outlet pipe 32 is installed, which ensures that the ignition wire 11 extends into the gas outlet pipe 32.

[0088] Furthermore, the easy installation and removal of the air outlet pipe 32 allows for the replacement of air outlet pipes 32 with different numbers of fan blades 19 and different tilt angles of the fan blades 19, thereby meeting different needs for the flame output of the flame gun.

[0089] Example 8:

[0090] This embodiment provides a flamethrower nozzle, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0091] The connecting pipe 30 is provided with a bent section 33.

[0092] As can be seen from this embodiment, by setting a bend section 33 on the connecting pipe 30, it is easier to align the nozzle 31 on the air outlet pipe 32 with the area to be burned when holding the flame gun head, thus optimizing the directionality of the nozzle 31 when holding it, and making the direction of force exerted by the hand and the axis of the nozzle 31 form a comfortable angle, reducing operator fatigue.

[0093] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A lance tip, characterized in that include: Gas source connector (1) is equipped with a regulating device (2) for adjusting the amount of gas supplied; The flame tube (3) includes a connecting pipe (30) connected to the gas source connector (1) for the discharge of fuel gas and an outlet pipe (32) with a nozzle (31) formed at the end; The connecting shell (4) is connected to the connecting pipe (30) and the air outlet pipe (32) at both ends respectively, and an air inlet (5) is provided at one end and a mixing chamber (6) is formed at the other end; The piezoelectric igniter (7) has an extension (8) on the side of the connecting housing (4) and an installation cavity (9) is provided in the extension (8); Button (10) is slidably connected to the end of the mounting cavity (9) away from the connecting housing (4) and is used to trigger the piezoelectric igniter (7) under force; The piezoelectric igniter (7) is provided with an ignition wire (11) that extends into the gas outlet pipe (32).

2. The flamethrower head according to claim 1, characterized in that: The mounting cavity (9) has a through hole (12) adapted to the ignition wire (11) on the inner wall of the side near the connecting housing (4), and the through hole (12) connects the mounting cavity (9) and the connecting housing (4) respectively. The through hole (12) is formed at an acute angle to the mixing chamber (6).

3. The flamethrower head according to claim 2, characterized in that: A threaded hole (13) is provided on the inner wall of the mounting cavity (9), and a limit bolt (14) is installed in the threaded hole (13); The button (10) has a groove (15) that is compatible with the limiting bolt (14).

4. The flamethrower head according to claim 1, characterized in that: The mixing chamber (6) includes a primary mixing chamber (60) and a swirling chamber (61). A torsion guide (16) is installed in the swirling chamber (61) to divide the mixed airflow into multiple streams and cause each stream to rotate and flow.

5. The flamethrower head according to claim 4, characterized in that: The tortuous guide (16) is provided with a limiting frame (17) at one end near the initial mixing chamber (60) and a first fixing frame (18) at the other end; The first fixing frame (18) is detachably connected to the connecting housing (4).

6. The lance tip of claim 1, wherein, Also includes: The fan blade (19) is installed inside the air outlet pipe (32), and a second fixing bracket (20) is provided at one end near the connecting housing (4); There are multiple wind blades (19), all of which are inclined and distributed at equal intervals around the circumference. The second fixed frame (20) has multiple air holes (21) corresponding to the wind blades (19), which are used to guide the mixed gas to flow to the wind blades (19) and cause the gas to form a rotating airflow under the action of the wind blades (19).

7. The flamethrower head according to claim 6, characterized in that: The connecting housing (4) has an external thread at one end near the air outlet pipe (32), while the air outlet pipe (32) has an internal thread that matches the external thread at one end near the connecting housing (4).

8. The flamethrower head according to claim 1, characterized in that: The connecting pipe (30) is provided with a bend (33).

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