Ignition gun structure

Abstract

This utility model discloses an ignition gun structure, including an ignition gun body, a nozzle, a piezoelectric ignition assembly, and an air intake regulating valve rod. The nozzle is located inside the ignition gun body, and its front end has a flame nozzle. An air inlet communicating with the gas passage inside the nozzle is opened on the side wall of the ignition gun body. The air intake regulating valve rod is used to regulate the air intake flow of the gas passage. The gas passage includes a first flow channel and a second flow channel that are interconnected. A gas source regulating port is formed at the intersection of the first flow channel and the second flow channel. The air intake regulating valve rod has a conical adjusting part and a threaded connection part that is threaded with the nozzle. The conical adjusting part extends into the first flow channel and faces the gas source regulating port. Rotating the air intake regulating valve rod drives its axial movement, so that the conical adjusting part dynamically adjusts the flow cross-sectional area of ​​the gas source regulating port. The cooperation between the conical adjusting part and the gas source regulating port in this utility model achieves precise flow control. The conical adjusting part is driven to move axially through the threaded cooperation, thereby dynamically changing the flow cross-sectional area of ​​the gas source regulating port.

Description

Technical Field

[0001] This utility model relates to the field of flamethrower technology, and in particular to an ignition gun structure. Background Technology

[0002] The gas regulating mechanism of traditional ignition guns has low regulation accuracy: the mainstream plug valve adopts a stepped opening control, and the flow rate changes in a discrete, jump-like manner, which cannot achieve linear stepless adjustment of flame intensity and is difficult to meet the application scenarios with high requirements for flame stability and flow control accuracy. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an ignition gun structure.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an ignition gun structure, comprising an ignition gun body, a nozzle, a piezoelectric ignition assembly, and an air intake regulating valve rod; the nozzle is disposed within the ignition gun body, with a nozzle at its front end; an air inlet communicating with a gas passage within the nozzle is opened on the side wall of the ignition gun body; the air intake regulating valve rod is used to regulate the air intake flow rate of the gas passage; the gas passage includes a first flow channel and a second flow channel that are interconnected; the axis of the first flow channel is parallel to the jet direction of the nozzle; the second flow channel extends along the gripping part of the ignition gun body; a gas source regulating port is formed at the intersection of the first flow channel and the second flow channel; the air intake regulating valve rod is provided with a conical adjusting part and a threaded connection part that is threadedly engaged with the nozzle; the conical adjusting part extends into the first flow channel and faces the gas source regulating port, and rotating the air intake regulating valve rod drives its axial movement, so that the conical adjusting part dynamically adjusts the flow cross-sectional area of ​​the gas source regulating port.

[0005] As a preferred embodiment of this utility model, the inner wall of the air source regulating port is constructed as a conical sealing surface, which forms a precisely fitted conical sealing pair with the conical adjusting part of the air intake regulating valve stem.

[0006] As a preferred embodiment of this utility model, the air intake regulating valve stem includes a cap located at the rear end of the threaded connection portion, and the cap is exposed at the tail end of the ignition gun body.

[0007] As a preferred technical solution of this utility model, the front end of the ignition gun body forms a flame gun tube, and the air inlet is opened on the side wall of the flame gun tube.

[0008] As a preferred embodiment of this utility model, the flame gun barrel is provided with an external thread at the air inlet; an adjusting cover is screwed onto the external thread, and its axial movement can adjust the opening of the air inlet.

[0009] As a preferred embodiment of this utility model, a sealing ring is fitted on the outer wall of the intake regulating valve stem, and the outer wall of the sealing ring abuts and seals against the inner wall of the first flow channel.

[0010] As a preferred technical solution of this utility model, the main body housing of the ignition gun is provided with a control circuit board and an ignition element; the surface of the housing is provided with a voice-controlled switch, which is electrically connected to the voice control module of the control circuit board and is at least partially exposed to enable or disable the voice control function.

[0011] As a preferred technical solution of this utility model, the ignition gun body is provided with a central frame, which has a mounting cavity for embedding the control circuit board.

[0012] As a preferred technical solution of this utility model, a push switch is provided at the upper end of the ignition gun body, which is electrically connected to the control circuit board; pressing down the push switch can trigger the ignition element to perform the ignition operation.

[0013] As a preferred embodiment of the present invention, the piezoelectric ignition assembly includes a piezoelectric igniter arranged laterally in the grip portion; a push button is provided on the side of the grip portion, and the push button is linked with the piezoelectric igniter.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the cooperation between the conical adjustment part and the air source adjustment port in this application realizes precise flow control, and the conical adjustment part is driven to move axially through the threaded connection, dynamically changing the flow cross-sectional area of ​​the air source adjustment port; the spatial configuration of the first flow channel (parallel to the flame direction) and the second flow channel (extending along the grip part) makes reasonable use of the internal structure of the ignition gun body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the intake regulating valve stem in this utility model.

[0019] Reference numerals: 1. Ignition gun body; 2. Nozzle; 3. Piezoelectric ignition assembly; 4. Air intake regulating valve stem; 5. Nozzle; 6. Air inlet; 7. First flow channel; 8. Second flow channel; 9. Air source regulating port; 10. Conical adjusting part; 11. Threaded connection part; 12. Conical sealing surface; 13. Screw cap; 14. Flame gun barrel; 15. External thread part; 16. Adjusting cap; 17. Sealing ring; 18. Control circuit board; 19. Ignition element; 20. Sound-activated switch; 21. Middle frame; 22. Mounting cavity; 23. Press switch; 24. Piezoelectric igniter; 25. Push button; 26. Grip part. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1-4 The illustrated ignition gun structure includes an ignition gun body 1, a nozzle 2, a piezoelectric ignition assembly 3, and an air intake regulating valve 4. The nozzle 2 is located inside the ignition gun body 1, and its front end has a flame nozzle 5. An air inlet 6 is opened on the side wall of the ignition gun body 1, communicating with the gas passage inside the nozzle 2. The air intake regulating valve 4 is used to regulate the air intake flow rate of the gas passage. The gas passage includes a first flow channel 7 and a second flow channel 8 that are interconnected. The axis of the first flow channel 7 is parallel to the spray direction of the flame nozzle 5. The second flow channel 8 extends along the grip portion 26 of the ignition gun body 1. The intersection of the first flow channel 7 and the second flow channel 8 forms a... The gas source regulating port 9 is provided; the intake regulating valve stem 4 is provided with a conical regulating part 10 and a threaded connection part 11 that is threaded with the nozzle 2 (the two are integrally formed); the conical regulating part 10 extends into the first flow channel 7 and faces the gas source regulating port 9. Rotating the intake regulating valve stem 4 drives its axial movement, so that the conical regulating part 10 dynamically adjusts the flow cross-sectional area of ​​the gas source regulating port 9. The main purpose of this application is to achieve intake flow regulation by cooperating the intake regulating valve stem 4 with the nozzle 2. Therefore, the structure of the gas chamber is not described. This is the prior art, and its working principle is relatively mature. This application will not elaborate on it in detail.

[0023] The application achieves precise flow control through the cooperation between the conical adjustment part 10 and the air source adjustment port 9. The conical adjustment part 10 is driven to move axially through the threaded connection, which dynamically changes the flow cross-sectional area of ​​the air source adjustment port 9. The spatial configuration of the first flow channel 7 (parallel to the flame direction) and the second flow channel 8 (extending along the grip part 26) makes reasonable use of the internal structure of the ignition gun body 1.

[0024] The inner wall of the air source regulating port 9 is constructed as a conical sealing surface 12. The conical sealing surface 12 and the conical regulating part 10 of the air intake regulating valve stem 4 form a precisely matched conical sealing pair. A sealing ring 17 is sleeved on the outer wall of the air intake regulating valve stem 4. The outer wall of the sealing ring 17 abuts and seals with the inner wall of the first flow channel 7.

[0025] The intake regulating valve stem 4 includes a cap 13 located at the rear end of the threaded connection portion 11. The cap 13 is exposed at the rear end of the ignition gun body 1. The regulating cap 16 is screwed on to control the opening of the air inlet 6.

[0026] The front end of the ignition gun body 1 forms a flame gun barrel 14, and an air inlet 6 is opened on the side wall of the flame gun barrel 14. The flame gun barrel 14 has an external threaded part 15 at the air inlet 6. An adjustment cover 16 is screwed onto the external threaded part 15, and its axial movement can adjust the opening degree of the air inlet 6.

[0027] The main body 1 of the lighter contains a control circuit board 18 and an ignition element 19 (commercially available, such as a high-voltage coil, but not limited to a high-voltage coil; any ignition element 19 capable of igniting gas in this field is within the scope of this patent). The main body 1 of the lighter contains a central frame 21, which has a mounting cavity 22 for embedding the control circuit board 18. In this embodiment, the sound control module and sound control switch 20 are prior art. This application does not involve improvements to the control circuit, so they are not specifically described. Any control device that uses sound wave energy to convert into an electrical signal to open or close the ignition circuit is within the scope of protection of the sound control switch 20 in this patent.

[0028] The piezoelectric ignition assembly 3 includes a piezoelectric igniter 24 arranged laterally in the grip portion 26; a push button 25 is provided on the side of the grip portion 26, which is linked with the piezoelectric igniter 24. In this embodiment, the piezoelectric electron guide extends to the flame nozzle 5.

[0029] A push-button switch 23 (which can be a microswitch) is provided at the upper end of the ignition gun body 1, which is electrically connected to the control circuit board 18. Pressing down the push-button switch 23 can trigger the ignition element 19 to perform the ignition operation. In this embodiment, the push-button switch 23 is commercially available. This application does not involve improvements to the control circuit, so it is not specifically described. Any physical switch that triggers ignition by changing the circuit's on / off state through mechanical pressure is within the protection scope of this patent's push-button switch 23. This application adopts a triple-point ignition redundancy design of a voice control module, a piezoelectric igniter 24, and a push-button switch 23. The voice control module supports non-contact ignition, effectively solving the problem of operation in environments with wet / oily hands. The dual physical ignition channels (piezoelectric + push-button switch 23) constitute a failure protection mechanism, ensuring that the ignition function of the entire machine remains intact when a single module fails.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of this utility model and are not intended to limit it. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. An ignition gun structure, comprising an ignition gun body (1), a nozzle (2), a piezoelectric ignition assembly (3), and an air intake regulating valve rod (4); the nozzle (2) is disposed inside the ignition gun body (1), and its front end is provided with a flame nozzle (5); an air inlet (6) is opened on the side wall of the ignition gun body (1) and communicates with the gas passage inside the nozzle (2); the air intake regulating valve rod (4) is used to regulate the air intake flow rate of the gas passage; characterized in that: The gas passage includes a first flow channel (7) and a second flow channel (8) that are interconnected; the axis of the first flow channel (7) is parallel to the injection direction of the nozzle (5); the second flow channel (8) extends along the direction of the grip part (26) of the ignition gun body (1); a gas source regulating port (9) is formed at the intersection of the first flow channel (7) and the second flow channel (8); the intake regulating valve rod (4) is provided with a conical regulating part (10) and a threaded connection part (11) that is threaded with the nozzle (2); the conical regulating part (10) extends into the first flow channel (7) and faces the gas source regulating port (9); rotating the intake regulating valve rod (4) drives it to move axially, so that the conical regulating part (10) dynamically adjusts the flow cross-sectional area of ​​the gas source regulating port (9).

2. The ignition gun structure according to claim 1, characterized in that: The inner wall of the air source regulating port (9) is constructed as a conical sealing surface (12), which forms a precisely fitted conical sealing pair with the conical adjusting part (10) of the air intake regulating valve stem (4).

3. The ignition gun structure according to claim 1, characterized in that: The intake regulating valve stem (4) includes a cap (13) located at the rear end of the threaded connection (11), which is exposed at the tail end of the ignition gun body (1).

4. The ignition gun structure according to claim 1, characterized in that: The front end of the ignition gun body (1) forms a flame gun tube (14), and the air inlet (6) is opened on the side wall of the flame gun tube (14).

5. The ignition gun structure according to claim 4, characterized in that: The flame gun barrel (14) has an external thread (15) at the air inlet (6); an adjustment cover (16) is screwed onto the external thread (15), and its axial movement can adjust the opening of the air inlet (6).

6. The ignition gun structure according to claim 1, characterized in that: A sealing ring (17) is fitted on the outer wall of the intake regulating valve stem (4), and the outer wall of the sealing ring (17) abuts against the inner wall of the first flow channel (7) for sealing.

7. The ignition gun structure according to claim 1, characterized in that: The main body (1) of the ignition gun is equipped with a control circuit board (18) and an ignition element (19) inside the housing; the surface of the housing is provided with a sound control switch (20), which is electrically connected to the sound control module of the control circuit board (18) and is at least partially exposed to enable or disable the sound control function.

8. The ignition gun structure according to claim 7, characterized in that: The main body (1) of the ignition gun is provided with a central frame (21), which has a mounting cavity (22) for embedding the control circuit board (18).

9. The ignition gun structure according to claim 7, characterized in that: The upper end of the ignition gun body (1) is provided with a push switch (23), which is electrically connected to the control circuit board (18); pressing down the push switch (23) can trigger the ignition element (19) to perform the ignition operation.

10. The ignition gun structure according to claim 1, characterized in that: The piezoelectric ignition assembly (3) includes a piezoelectric igniter (24) arranged laterally in the grip (26); the grip (26) has a push button (25) on its side, which is linked to the piezoelectric igniter (24).

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