Fire-fighting flame gun

Abstract

A fire-fighting flame gun comprises a gun shell, a fuel pipe, a flame spraying cover, a grip, an ignition device, an oil supply pipe, a power supply line, a speed regulating valve and a starting device. The front end of the gun shell is connected with a fuel pipe, and the rear end is connected with an oil supply pipe; an ignition device is installed in the gun shell, and an ignition wire connected with the ignition device extends to the open end of the fuel pipe. A grip is arranged outside the oil supply pipe and presses the gun shell through a locking table arranged on the oil supply pipe. A power supply line connected with the ignition device is further arranged in the grip. The top of the gun shell is connected with a speed regulating valve which is used for regulating the supply amount of fuel; a starting device is connected to the lower portion of the gun shell and used for starting the flame gun, and starting and stopping of the ignition device and starting and stopping of fuel injection can be controlled at the same time. All the components are tightly connected to form a whole, so that a user can hold and operate conveniently; due to the design of the starting device, integrated control over starting and stopping of the ignition device and starting and stopping of fuel injection is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of fire fighting equipment, in particular to a flamethrower for fire fighting. Background Art

[0002] The flamethrower is a device with a wide range of applications, such as in the military field and firefighting field.

[0003] In the military field, flamethrowers are used to attack fire points, eliminate manpower within fortifications, kill and block attacking groups of infantry, and play an important role in war.

[0004] In the field of firefighting, it can be used for the rapid combustion setting of isolation belts in forest firefighting, and can be deployed quickly and over a large area, reducing the workload of firefighters. It can also be used as an effective tool for long-distance ignition of dangerous objects and accelerating the combustion of dangerous objects.

[0005] Regarding the safety hazards in life, wasp nests or ant nests are relatively common, and wasp injuries occur frequently. The existence of ant nests will damage the safety of residents' property and cause safety hazards to building facilities. Therefore, firefighters are needed to come forward to solve the hidden dangers. The common way to remove wasp nests or ant nests, in addition to the corresponding pesticides, the most effective way to remove them is to use flames to burn them. Compared with killing with pesticides, the biggest advantage of flame incineration is high removal efficiency and good removal effect.

[0006] After the fire flamethrower pressurizes the gasoline through the built-in oil pump, the control switch on the flamethrower controls the injection of liquid gasoline and ignites the hydraulic gasoline to achieve the injection of the fire column.

[0007] In the flamethrower currently used, the gun body, operating part and ignition are mostly independently set or spliced ​​by simple combination, without considering the convenience and controllability of firefighters. A modular design is needed to make the operation convenient and the adjustment efficient. And it is more flexible and convenient in the subsequent use and maintenance. This scheme adheres to the principle of "inheritance, reference and improvement" and designs the gun body in a modular way. Utility Model Content

[0008] The utility model aims to provide a flamethrower for fire fighting, so as to solve the technical problems of modular design, convenient use and convenient repair and maintenance.

[0009] To achieve the above purpose, the specific technical solution of a fire-fighting flamethrower of the utility model is as follows:

[0010] A flame spray gun for fire fighting, comprising a gun housing, a fuel pipe, a flame spray hood, a grip, an ignition device, an oil supply pipe, a power supply line, a speed regulating valve and a starting device;

[0011] The front end of the gun housing is connected to a fuel pipe, and the rear end is connected to an oil supply pipe;

[0012] An ignition device is mounted inside the gun housing, and an ignition wire connected to the ignition device extends to the open end of the fuel pipe;

[0013] A grip is provided on the outside of the oil supply pipe, and the grip is pressed against the gun housing through a locking platform provided on the oil supply pipe;

[0014] A power supply line connected to the ignition device is also provided inside the grip;

[0015] A speed regulating valve is connected to the top of the gun housing to adjust the amount of fuel supplied;

[0016] A starting device is connected to the lower part of the gun housing, which is used to start the flamethrower and can simultaneously control the start and stop of the ignition device and the start and stop of the injection fuel.

[0017] Further, the gun housing body is a box-shaped housing;

[0018] A first hole is provided at the rear end of the housing for connecting with the oil supply pipe;

[0019] A second hole is provided at the top for connecting the speed regulating valve, and a guide groove is also provided at the top of the second hole;

[0020] A third hole is provided at the front end for connecting the fuel pipe;

[0021] A fourth hole is provided at the bottom for connecting a starting device.

[0022] Furthermore, the first hole is connected to the second hole, and a connecting hole and an actuating hole are sequentially connected between the second hole and the fourth hole;

[0023] The third hole and the actuating hole are connected through the injection hole;

[0024] An ignition slot and a rod slot are provided below the first hole;

[0025] An ignition device is installed in the ignition groove, and a fixing hole is passed through the ignition groove for fixing the ignition device;

[0026] The rod groove is used to install the pressure rod of the starting device, and a fastening hole runs through the rod groove position for connecting the pressure rod.

[0027] Furthermore, two wire holes are provided through the ignition slot and the front end of the gun shell, and the two wire holes are located on both sides below the third hole.

[0028] Further, the fuel pipe is connected to the third hole through a pipe joint, and a nozzle is provided on the other side of the fuel pipe;

[0029] A flame hood is also provided at the end of the fuel pipe, and the flame hood is sleeved on the outside of the fuel pipe to cover the nozzle;

[0030] The flame hood is a cylindrical cavity with an opening on one side, and an oxygen supply hole is arranged on the cylindrical bottom wall.

[0031] Furthermore, two ignition wires connected to the ignition device pass through the wire hole, and an insulating layer is used outside the ignition wire to insulate and prevent electrical connection; the two ignition wires are fixed to the lower end of the fuel pipe using a wire clamp;

[0032] Two ignition electrodes are arranged at the front end of the nozzle in the flame hood. The two ignition electrodes are respectively connected to two ignition wires. The tips of the ignition electrodes are arranged oppositely at the nozzle opening of the nozzle.

[0033] Furthermore, the speed regulating valve comprises a knob and a speed regulating valve core connected thereto, the upper guide cover is installed in the guide groove, and the speed regulating valve core passes through the guide cover and is inserted into the second hole;

[0034] The speed regulating valve core is a cylindrical rod body as a whole, with a valve head at one end, a front rod in the middle, and a rear rod at the other end;

[0035] A sealing groove 1 is provided in the middle of the front rod, and an O-ring is installed in the groove to achieve sealing between the speed regulating valve core and the second hole;

[0036] The rear rod is provided with a thread, a fixing surface is provided on the threaded part, and a socket is provided in the middle of the fixing surface. The socket is used to fix the knob, and the fixing surface is used to make it more convenient to apply force when the knob is rotated.

[0037] Further, the starting device; comprising a pressure rod and a switch valve core connected to the pressure rod, the switch valve core is sequentially inserted into the fourth hole, the actuating hole and the connecting hole,

[0038] The switch valve core is cylindrical in shape as a whole, with a fastening section at one end, and the fastening section is a threaded structure at one end;

[0039] The fastening section is provided with a valve stem, a limit ring, a sliding section, a second sealing groove, and an intrusion section in sequence;

[0040] An O-ring is arranged in the second sealing groove to achieve sealing between the switch valve and the actuating hole;

[0041] The diameter of the limit ring is slightly smaller than the fourth hole. When installing, install the spring on the outside of the valve stem.

[0042] The lower guide cover is sleeved outside the switch valve core and fixedly connected with the gun housing, the fastening section is connected with a locking card, and the pressure rod is fixed to the fastening section by the locking card.

[0043] Furthermore, a compression switch is provided at the lower end of the ignition device, and the compression switch is connected to a protrusion provided on the pressure rod;

[0044] The pressure rod is pressed, and the protrusion of the pressure rod squeezes the compression switch of the ignition device to start the ignition device.

[0045] The utility model has the following advantages:

[0046] 1. Compact structure and easy to operate: The various parts of the flamethrower are tightly connected to form a whole, which is convenient for users to hold and operate;

[0047] 2. High safety: The ignition device and the fuel pipe are insulated with an insulating layer to prevent electrical connection, which improves safety during use; at the same time, the design of the flame hood also reduces the possibility of flame spillage, further enhancing safety;

[0048] 3. Good spraying effect: The design of the flame hood makes the sprayed flame more concentrated, which improves the spraying effect. At the same time, the oxygen supply holes set on the flame hood can increase the oxygen supply and make the combustion more complete;

[0049] 4. Strong adjustability: The design of the speed regulating valve allows the fuel supply to be adjusted as needed to meet the needs of different occasions;

[0050] 5. Easy to start: The design of the starting device realizes the integrated control of the start and stop of the ignition device and the start and stop of the injection fuel, simplifies the operation steps and improves the convenience of operation. The design of the starting device makes the start and stop of the flamethrower more convenient and quick, and improves work efficiency.

[0051] 6. Good ignition effect: By arranging the ignition electrode in the flame hood and setting its tip relatively at the nozzle of the nozzle, it can be ensured that the fuel is ignited immediately when it is sprayed out, thereby improving the ignition effect and the stability of the flame.

[0052] 7. Easy maintenance: The components of the flamethrower are detachable, and the connection between the components is simple, which is convenient for disassembly and replacement, reducing the difficulty of daily maintenance and replacement of components and extending the service life;

[0053] 8. Wide range of applications: The flamethrower can be used in firefighting, military, agriculture, gardening and other fields, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a front view structural diagram of a flamethrower for fire fighting of the utility model;

[0055] Figure 2 This is a rear view structural diagram of a flamethrower for fire fighting of the utility model;

[0056] Figure 3 It is a schematic diagram of the side view of the flamethrower for fire fighting of the utility model;

[0057] Figure 4 For the utility model Figure 1 BB cross-sectional view;

[0058] Figure 5 This is a front view structural diagram of the gun housing of the utility model;

[0059] Figure 6 The three-dimensional structure of the gun shell of the utility model is shown in FIG. Figure 1 ;

[0060] Figure 7 The three-dimensional structure of the gun shell of the utility model is shown in FIG. Figure 2 ;

[0061] Figure 8 This is a rear view structural diagram of the gun housing of the utility model;

[0062] Fig. 9 This is a front view structural diagram of the gun housing of the utility model;

[0063] Fig.10 For the utility model Fig. 9 BB cross-sectional view;

[0064] Fig.11 For the utility model Fig. 9 CC section view;

[0065] Fig.12 This is a schematic diagram of the speed regulating valve core structure of the utility model;

[0066] Fig.13 This is a schematic diagram of the switch valve core structure of the utility model;

[0067] Description of the markings in the figure:

[0068] 1. Gun case; 1-1. Shell; 1-2. First hole; 1-3. Second hole; 1-4. Connecting hole; 1-5. Third hole; 1-6. Injection hole; 1-7. Fourth hole; 1-8. Actuation hole; 1-9. Ignition slot; 1-10. Rod slot; 1-11. Wire hole; 1-12. Fixing hole; 1-13. Fastening hole; 1-14. Guide slot;

[0069] 2. Fuel pipe; 2-1. Nozzle; 2-2. Pipe joint;

[0070] 3. Flame hood; 3-1. Oxygen supply hole; 4. Handle; 5. Pressure rod; 5-1. Spring; 5-2. Lock card; 5-3. Bump;

[0071] 6. Ignition wire; 6-1. Wire card; 6-2. Ignition electrode;

[0072] 7. Oil supply pipe; 7-1. Locking table; 8. Power supply line; 9. Knob;

[0073] 10, speed regulating valve core; 10-1, valve head; 10-2, front rod; 10-3, sealing groove 1; 10-4, rear rod; 10-5, fixing surface; 10-6, socket;

[0074] 11. Switch valve core; 11-1. Sealing groove 2; 11-2. Intrusion section; 11-3. Sliding section; 11-4. Limiting ring; 11-5. Valve stem; 11-6. Fastening section;

[0075] 12. O-ring; 13. Ignition device; 13-1. Compression switch; 14. Upper guide cover; 15. Lower guide cover; DETAILED DESCRIPTION

[0076] In order to better understand the purpose, structure and function of the utility model, the utility model is described in further detail below in conjunction with the accompanying drawings.

[0077] like Figure 1-4 As shown, the overall structure of the fire-fighting flamethrower of the utility model and the connection relationship of each component are shown.

[0078] A flamethrower for firefighting, comprising a gun housing 1, a fuel pipe 2, a flamethrower cover 3, a grip 4, an ignition device 13, an oil supply pipe 7, a power supply line 8, a speed regulating valve, and a starting device;

[0079] The front end of the gun housing 1 is connected to a fuel pipe 2, and the rear end is connected to an oil supply pipe 7.

[0080] An ignition device 13 is installed inside the gun housing 1, and an ignition wire 6 connected to the ignition device 13 extends to the open end of the fuel pipe 2;

[0081] A grip 4 is disposed outside the oil supply pipe 7, and the grip 4 is pressed against the gun housing 1 through a locking platform 7-1 disposed on the oil supply pipe 7;

[0082] A power supply line 8 connected to the ignition device 13 is also provided inside the grip 4;

[0083] A speed regulating valve is connected to the top of the gun housing 1 to adjust the amount of fuel supplied;

[0084] A starting device is connected to the lower part of the gun housing 1 for starting the flamethrower and can simultaneously control the start and stop of the ignition device 13 and the start and stop of the injection fuel.

[0085] Figure 5-11 , showing in detail the overall structure of the gun casing and the structure of each internal connecting part.

[0086] The main body of the gun case 1 is a box-shaped housing 1-1;

[0087] A first hole 1-2 is provided at the rear end of the housing 1-1 for connecting with the oil supply pipe 7;

[0088] A second hole 1-3 is provided at the top for connecting the speed regulating valve, and a guide groove 1-14 is also provided at the top of the second hole 1-3;

[0089] The front end is provided with a third hole 1-5 for connecting the fuel pipe 2;

[0090] A fourth hole 1-7 is provided at the bottom for connecting a starting device;

[0091] The first hole 1-2 is connected to the second hole 1-3, and the connecting hole 1-4 and the actuating hole 1-8 are connected in sequence between the second hole 1-3 and the fourth hole 1-7.

[0092] The third hole 1-5 and the actuation hole 1-8 are connected through the injection hole 1-6.

[0093] An ignition slot 1-9 and a rod slot 1-10 are provided below the first hole 1-2.

[0094] An ignition device 13 is installed in the ignition groove 1-9, and a fixing hole 1-12 is passed through the ignition groove 1-9 for fixing the ignition device 13;

[0095] The rod groove 1-10 is used to install the pressure rod 5 of the starting device. A fastening hole 1-13 is penetrated through the rod groove 1-10 for connecting the pressure rod 5.

[0096] Two wire holes 1-11 are provided through the ignition groove 1-9 and the front end of the gun housing 1, and the two wire holes 1-11 are located on both sides below the third hole 1-5;

[0097] Figure 1-4 , 10, and 11 show the structure of the flame hood and the ignition device and their connection relationship in the flamethrower.

[0098] In order to further improve the connection convenience between the fuel pipe 2 and the gun housing 1 and improve the sealing performance, the fuel pipe 2 is connected to the third hole 1-5 through a pipe joint 2-2, and a nozzle 2-1 is provided on the other side of the fuel pipe 2. The nozzle 2-1 can be replaced according to the fire situation or the use scene, and can produce different spray effects;

[0099] A flame hood 3 is also provided at the end of the fuel pipe 2. The flame hood 3 is sleeved on the outside of the fuel pipe 2 to cover the nozzle 2-1.

[0100] The flame hood 3 is a cylindrical cavity with a single-side opening, and an oxygen supply hole 3-1 is arranged on the cylindrical bottom wall.

[0101] Two ignition wires 6 connected to the ignition device 13 pass through the wire hole 1-11, and the ignition wires 6 are insulated with an insulating layer to prevent electrical connection; the two ignition wires 6 are fixed to the lower end of the fuel pipe 2 using a wire clamp 6-1;

[0102] Two ignition electrodes 6-2 are arranged at the front end of the nozzle 2-1 in the flame hood 3. The two ignition electrodes 6-2 are respectively connected to two ignition wires 6. The tips of the ignition electrodes 6-2 are arranged opposite to each other at the nozzle opening of the nozzle 2-1.

[0103] Figure 3 , 4 , 12, shows the structure of the speed regulating valve and the speed regulating valve core and the connection relationship in the flamethrower.

[0104] The speed regulating valve comprises a knob 9 and a speed regulating valve core 10 connected thereto, and an upper guide cover 14 is installed in the guide groove 1-14.

[0105] The speed regulating valve core 10 passes through the guide cover and is inserted into the second hole 1-3.

[0106] The speed regulating valve core 10 is a cylindrical rod body as a whole, with a valve head 10-1 at one end, a front rod 10-2 in the middle, and a rear rod 10-4 at the other end.

[0107] A sealing groove 10-3 is provided in the middle of the front rod 10-2, and an O-ring is installed in the groove to achieve sealing between the speed regulating valve core 10 and the second hole 1-3;

[0108] A thread is provided on the rear rod 10-4, a fixing surface 10-5 is provided on the threaded portion, and a socket 10-6 is provided in the middle of the fixing surface 10-5. The socket 10-6 is used to fix the knob 9, and the fixing surface 10-5 is used to make it more convenient to apply force when the knob 9 is rotated.

[0109] Figure 3 , 4 , 13, shows the structure of the starting device and the switch valve core and the connection relationship in the flamethrower.

[0110] The starting device comprises a pressure rod 5 and a switch valve core 11 connected to the pressure rod 5, the switch valve core 11 is sequentially inserted into the fourth hole 1-7, the actuating hole 1-8 and the communicating hole 1-4,

[0111] The switch valve core 11 is cylindrical in shape as a whole, and a fastening section 11-6 is provided at one end, and the fastening section 11-6 is a threaded structure at one end;

[0112] The valve stem 11-5, the limit ring 11-4, the sliding section 11-3, the sealing groove 11-1 and the intrusion section 11-2 are sequentially arranged along the fastening section 11-6;

[0113] An O-ring is provided in the sealing groove 11-1 to achieve sealing between the switch valve and the actuating hole 1-8;

[0114] The diameter of the limiting ring 11-4 is slightly smaller than the fourth hole 1-7. When installing, install the spring 5-1 on the outside of the valve stem 11-5.

[0115] The lower guide cover 15 is sleeved outside the switch valve core 11 and fixedly connected to the gun housing 1. The fastening section 11-6 is connected with a lock card 5-2, and the pressure rod 5 is fixed to the fastening section 11-6 by the lock card 5-2.

[0116] A compression switch 13 - 1 is provided at the lower end of the ignition device 13 , and the compression switch 13 - 1 is connected to the protrusion 5 - 3 provided on the pressure rod 5 .

[0117] When in use, start the power supply and fuel supply device, and rotate the knob 9 to adjust the amount of fuel released;

[0118] Pressing the pressure rod 5 drives the switch valve core 11 to move downward, so that the oil supply pipe 7 is connected to the injection hole 1-6 to realize fuel supply. At the same time, due to the rotation of the pressure rod 5 around the rotating shaft in the fastening hole 1-13, the protrusion 5-3 of the pressure rod 5 squeezes the compression switch 13-1 of the ignition device 13, starting the ignition device 13. The ignition device 13 connects the power supply line 8 and the ignition line 6, so that the electrode discharges and ignites the fuel to realize the spraying. During the fuel supply process, the ignition device 13 continues to ignite to ensure the continuous combustion of the fuel, and no empty shot will be caused due to abnormal conditions.

[0119] Due to the negative pressure of the injection and the airflow guidance of the combustion, air is sucked in from the oxygen supply hole 3-1 to provide an oxygen-containing environment for complete combustion.

[0120] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A flamethrower for firefighting, characterized in that: Including, gun housing, fuel pipe, flame shield, grip, ignition device, fuel supply pipe, power supply line, speed regulating valve and starting device; The front end of the gun housing is connected to a fuel pipe, and the rear end is connected to an oil supply pipe; An ignition device is mounted inside the gun housing, and an ignition wire connected to the ignition device extends to the open end of the fuel pipe; A grip is provided on the outside of the oil supply pipe, and the grip is pressed against the gun housing through a locking platform provided on the oil supply pipe; A power supply line connected to the ignition device is also provided inside the grip; A speed regulating valve is connected to the top of the gun housing to adjust the amount of fuel supplied; A starting device is connected to the lower part of the gun housing, which is used to start the flamethrower and can simultaneously control the start and stop of the ignition device and the start and stop of the injection fuel.

2. A flamethrower for firefighting according to claim 1, characterized in that: The gun housing body is a box-shaped housing; A first hole is provided at the rear end of the housing for connecting with the oil supply pipe; A second hole is provided at the top for connecting the speed regulating valve, and a guide groove is also provided at the top of the second hole; A third hole is provided at the front end for connecting the fuel pipe; A fourth hole is provided at the bottom for connecting a starting device.

3. A flamethrower for firefighting according to claim 2, characterized in that: The first hole is connected to the second hole, and a connecting hole and an actuating hole are sequentially connected between the second hole and the fourth hole; The third hole and the actuating hole are connected through the injection hole; An ignition slot and a rod slot are provided below the first hole; An ignition device is installed in the ignition groove, and a fixing hole is passed through the ignition groove for fixing the ignition device; The rod groove is used to install the pressure rod of the starting device, and a fastening hole runs through the rod groove position for connecting the pressure rod.

4. A flamethrower for firefighting according to claim 3, characterized in that: Two wire holes are arranged through the ignition slot and the front end of the gun shell, and the two wire holes are located on both sides below the third hole.

5. A flame spray gun for firefighting according to claim 4, characterized in that: The fuel pipe is connected to the third hole through a pipe joint, and a nozzle is provided on the other side of the fuel pipe; A flame hood is also provided at the end of the fuel pipe, and the flame hood is sleeved on the outside of the fuel pipe to cover the nozzle; The flame hood is a cylindrical cavity with an opening on one side, and an oxygen supply hole is arranged on the cylindrical bottom wall.

6. A flame spray gun for firefighting according to claim 4, characterized in that: Two ignition wires connected to the ignition device pass through the wire hole, and an insulating layer is used outside the ignition wire to insulate it to prevent electrical connection; the two ignition wires are fixed to the lower end of the fuel pipe using a wire clamp; Two ignition electrodes are arranged at the front end of the nozzle in the flame hood. The two ignition electrodes are respectively connected to two ignition wires. The tips of the ignition electrodes are arranged oppositely at the nozzle opening of the nozzle.

7. A flame spray gun for firefighting according to claim 3, characterized in that: The speed regulating valve comprises a knob and a speed regulating valve core connected thereto, the upper guide cover is installed in the guide groove, and the speed regulating valve core passes through the guide cover and is inserted into the second hole; The speed regulating valve core is a cylindrical rod body as a whole, with a valve head at one end, a front rod in the middle, and a rear rod at the other end; A sealing groove 1 is provided in the middle of the front rod, and an O-ring is installed in the groove to achieve sealing between the speed regulating valve core and the second hole; The rear rod is provided with a thread, a fixing surface is provided on the threaded part, and a socket is provided in the middle of the fixing surface. The socket is used to fix the knob, and the fixing surface is used to make it more convenient to apply force when the knob is rotated.

8. A flame spray gun for firefighting according to claim 3, characterized in that: The starting device comprises a pressure rod and a switch valve core connected to the pressure rod, the switch valve core is sequentially inserted into the fourth hole, the actuating hole and the connecting hole, The switch valve core is cylindrical in shape as a whole, with a fastening section at one end, and the fastening section is a threaded structure at one end; The fastening section is provided with a valve stem, a limit ring, a sliding section, a second sealing groove, and an intrusion section in sequence; An O-ring is arranged in the second sealing groove to achieve sealing between the switch valve and the actuating hole; The diameter of the limit ring is slightly smaller than the fourth hole. When installing, install the spring on the outside of the valve stem. The lower guide cover is sleeved outside the switch valve core and fixedly connected with the gun housing, the fastening section is connected with a locking card, and the pressure rod is fixed to the fastening section by the locking card.

9. A flame spray gun for firefighting according to claim 8, characterized in that: A compression switch is arranged at the lower end of the ignition device, and the compression switch is connected to a protrusion arranged on the pressure rod; The pressure rod is pressed, and the protrusion of the pressure rod squeezes the compression switch of the ignition device to start the ignition device.

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