CN210801257U

CN210801257U - Hand-held linear igniter device

Info

Publication number: CN210801257U
Application number: CN201920954653.1U
Authority: CN
Inventors: 张英; 张威; 吴淑娴; 刘珂; 郝东康; 牟胜琳
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-06-19
Anticipated expiration: 2029-06-24

Abstract

The utility model relates to a hand-held linear igniter device, which comprises a gas inlet pipe, an air inlet pipe, a guide sleeve, a base and a gas mixing chamber, wherein gas introduced by the gas inlet pipe and air introduced by the air inlet pipe enter the gas mixing chamber through the guide sleeve, the hand-held linear igniter device also comprises a slotted pipe connected with the gas mixing chamber, the slotted pipe is provided with a linear seam, and the tail end of the slotted pipe is provided with a plug board; in the fuel combustion process, the linear free jet flame is generated from the linear seam, a moving adjusting structure used for changing the length of the linear seam is arranged on the linear seam, the moving adjusting structure comprises a moving plate, an inner gland and an adjusting rod, the moving plate is a strip-shaped plate with an arc-shaped cross section, the moving plate is attached to the inner wall of the slotted pipe, the inner gland is fixed on the inner side of the moving plate, and the adjusting rod penetrates through the linear seam and is fixedly connected with the moving plate. The utility model discloses simple structure, the burning is stable, and is corrosion-resistant and high temperature, satisfies the laboratory ignition requirement under the various different conditions.

Description

Hand-held linear igniter device

Technical Field

The present invention relates to ignition devices, and more particularly, to a hand-held linear igniter device.

Background

Most of the igniters sold in the market at present are spray gun type ignition or hot wire heating ignition. The spray gun type ignition principle is similar to that of the invention, specifically, the flame is sprayed out of the ceramic nozzle after the ignition of the gun mouth part by the electronic pulse through the mixture of the external fuel gas and the sucked air, but in the face of the ignition experiment of samples of different materials and different widths in a laboratory, the single cylindrical flame of the spray gun type ignition device can hardly meet the requirement, and the spray gun type ignition device has short service life and needs to change the fuel gas in a short time; the heating ignition of the thermal resistance wire for the ignition of thin cylindrical samples (such as cables and the like) can obtain a good effect, the normal ignition cannot be realized for other common shapes (such as rectangles and the like), and the ignition mode requires stable high voltage.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a hand-held type linear igniter device of ignition adjustable length.

The utility model provides a technical scheme that its technical problem adopted is: a handheld linear igniter device is constructed and comprises a gas inlet pipe, an air inlet pipe, a guide sleeve, a base and a gas mixing chamber, wherein the base is connected with the gas inlet pipe and the air inlet pipe; in the fuel combustion process, the linear free jet flame is generated from the linear seam, a moving adjusting structure used for changing the length of the linear seam is arranged on the linear seam, the moving adjusting structure comprises a moving plate, an inner gland and an adjusting rod, the moving plate is a strip-shaped plate with an arc-shaped cross section, the moving plate is attached to the inner wall of the slotted pipe, the inner gland is fixed on the inner side of the moving plate, and the adjusting rod penetrates through the linear seam and is fixedly connected with the moving plate.

In the above scheme, a sealing strip is arranged between the moving plate and the inner wall of the slotted pipe, and the inner gland is tightly attached to the sealing strip and the moving plate.

In the scheme, the outer side of one end, close to the gas mixing chamber, of the slit pipe is provided with the heat insulation sleeve.

In the scheme, the heat insulation sleeve is provided with the slotted taper end fastening screw.

In the scheme, the width of the linear seam is 0.5-1.5 mm.

Implement the utility model discloses a hand-held type linear type point firearm device has following beneficial effect:

1. the utility model has simple structure, stable combustion and no backfire, and the outlet flame is in a required linear structure.

2. The length of the profile seam can be changed by moving the adjusting structure, so that the ignition length is changed, and the application range is wider;

3. the gas pipeline is short in length, a guide pipe is used for guiding flow in the circulation of the gas pipeline, and the gas flow resistance is small. The pressure required for gas and air is low, and is maintained at about 1-3 kPa.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic view of a hand held linear igniter device of the invention;

FIG. 2 is a front view of the movement adjustment structure;

fig. 3 is a left side view of fig. 2.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the hand-held linear igniter device of the present invention includes a gas inlet pipe 6, an air inlet pipe 7, a guide sleeve 4, a gas mixing chamber 8, a base 5 and a slit pipe 2. The hand held linear igniter device is constructed of 304 stainless steel for corrosion and high temperature resistance.

The base 5 is connected to a gas inlet pipe 6 and an air inlet pipe 7. The gas introduced by the gas inlet pipe 6 and the air introduced by the air inlet pipe 7 enter the gas mixing chamber 8 through the guide sleeve 4, and the gas mixing chamber 8 is connected with the slotted pipe 2. The gas inlet pressure of the gas inlet pipe 6 and the air inlet pipe 7 is low, and the gas inlet pressure is maintained at about 1-3 kPa.

The slotted pipe 2 is provided with a linear slot 11, and the width of the linear slot 11 is 0.5-1.5mm, in the embodiment 1 mm. The gas inlet pipe 6 and the air inlet pipe 7 can be externally connected with metal conduits, are suitable for ignition experiments in a high-temperature environment, and are additionally provided with asbestos gaskets at the joints to play roles in corrosion prevention and sealing. The shape of the slotted pipe 2 is cylindrical, the mixing air chamber 8 is in a conical shape with a section of gradually reduced section, the flow rate of gas can be increased, and meanwhile, the slotted pipe has a certain ejector function.

The tail end of the slotted pipe 2 is provided with a blanking plate 1, linear free jet flame is generated from a linear slot 11 in the fuel combustion process, and a movable adjusting structure 10 for changing the opening length of the linear slot 11 is arranged on the linear slot 11. During the combustion of the fuel, linear free jet flames are generated from the linear slits 11.

As shown in fig. 2-3, the movement adjusting structure 10 includes a moving plate 12, an inner gland 14 and an adjusting rod 13, the moving plate 12 is a strip-shaped plate with an arc-shaped cross section, the moving plate 12 is attached to the inner wall of the slit pipe 2, the inner gland 14 is fixed on the inner side of the moving plate 12, and the adjusting rod 13 penetrates through the linear seam 11 and is fixedly connected with the moving plate 12. The moving plate 12 can be driven to move left and right by pushing the adjusting rod 13, and the moving plate 12 can block the opening of the seam 11, so that the opening length of the linear seam 11 can be adjusted.

Furthermore, a sealing strip 15 is arranged between the moving plate 12 and the inner wall of the slotted pipe 2, and an inner gland 14 is tightly attached to the sealing strip 15 and the moving plate 12. The sealing strip 15 is made of high-temperature-resistant modified polyvinyl fluoride material.

Furthermore, a heat insulation sleeve 3 is arranged on the outer side of one end of the slotted pipe 2 close to the air mixing chamber 8. The heat insulation sleeve 3 is made of high-temperature-resistant epoxy resin, so that a protection effect can be achieved, and scalding in the using process is prevented. The heat insulation sleeve 3 is provided with a slotted cone end set screw 9, so that the heat insulation sleeve 3 can be loosened and tightened to change the position of the heat insulation sleeve 3 or dismount the heat insulation sleeve.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A hand-held linear igniter device comprises a gas inlet pipe (6), an air inlet pipe (7), a guide sleeve (4), a base (5) and a gas mixing chamber (8), wherein the base (5) is connected with the gas inlet pipe (6) and the air inlet pipe (7), gas introduced from the gas inlet pipe (6) and air introduced from the air inlet pipe (7) enter the gas mixing chamber (8) through the guide sleeve (4), the hand-held linear igniter device is characterized by further comprising a slotted pipe (2) connected with the gas mixing chamber (8), a linear seam (11) is formed in the slotted pipe (2), and a plug plate (1) is arranged at the tail end of the slotted pipe (2); in the fuel combustion process, produce the free jet flame of line type from linear seam (11), be equipped with on linear seam (11) and be used for changing removal regulation structure (10) of linear seam (11) length, remove regulation structure (10) including movable plate (12), interior gland (14) and regulation pole (13), movable plate (12) are the curved bar board of cross section, movable plate (12) and the laminating of slotted pipe (2) inner wall, interior gland (14) are fixed at movable plate (12) inboard, adjust pole (13) and pass linear seam (11) and movable plate (12) fixed connection.

2. The hand-held igniter linear device (12) of claim 1 wherein a seal (15) is disposed between the moving plate (12) and the inner wall of the slotted tube (2), and the inner gland (14) is tightly attached to the seal (15) and the moving plate (12).

3. Hand-held igniter linear device according to claim 1, characterised in that the slotted tube (2) is provided with a heat insulating sleeve (3) on the outside of its end close to the gas mixing chamber (8).

4. A hand-held igniter linear device according to claim 3 wherein the sleeve (3) is provided with a slotted cone set screw (9).

5. The hand-held igniter wireform (11) device according to claim 1 wherein the width of the wireform seam (11) is 0.5-1.5 mm.