Welding spray gun capable of accurately controlling temperature

Abstract

The utility model discloses a welding spray gun capable of accurately controlling temperature, which belongs to the technical field of welding spray guns and is characterized by comprising a spray gun main pipe, a control valve is mounted on the left side of the spray gun main pipe, a spray head component is bolted on the left side of the control valve, and a pressure tank structure is mounted on the right side of the control valve. The spray gun main pipe is arranged to be matched with the control valve, the flow and the flow speed of gas supplied into the spray head assembly can be conveniently controlled, the welding flame spraying effect can be achieved after the gas passes through the spray head assembly and is subjected to electric ignition, and the horizontal position of the connecting sleeve can be moved on the outer side of the spray gun main pipe according to the size of flames needing to be sprayed; at the moment, the abutting ring connected with the outer baffle gets close to or away from the outer baffle, when the abutting ring makes contact with the inner side of the outer baffle and conducts abutting pushing, the outer baffle inclines along the sprayer body, meanwhile, the inner baffle is pushed to be folded along the position of the rotating shaft, the spraying space of flames is reduced, and the effect of reducing the flames is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding spray guns, in particular to a welding spray gun capable of accurately controlling temperature. Background Art

[0002] A welding torch is a tool that plays a key role in the welding process. It is usually composed of a torch body, a handle, a control switch, a gas or power interface, and other parts. Its main function is to generate a high-temperature flame or electric arc to melt welding materials and achieve the connection of components. Welding torches can be divided into gas welding torches and electric welding torches. Gas welding torches use a high-temperature flame generated by the combustion of a mixture of combustible gas and oxygen for welding; electric welding torches use electric current to generate an arc between the electrode and the workpiece to achieve welding.

[0003] Some gas welding guns in the prior art require one hand to hold the gas welding gun and use the other hand to adjust the gas output. The knob for adjusting the gas output is located at the upper end of the gun handle. During operation, the gas welding gun is often held by one hand, so the flame size cannot be adjusted at any time, which is inconvenient to operate.

[0004] A Chinese patent (publication number CN220050380N) discloses a gas welding gun, comprising a gun body, a needle valve, and an igniter. The needle valve comprises a valve seat and a valve needle. The valve seat is located inside the gun body, and one end of the valve needle protrudes from the surface of one side of the gun body and is provided with a knob. The igniter is provided with a button located at the front end of the gun body and is pressed from front to back. The utility model has a compact structure and can be operated with one hand to control ignition, flameout, and flame size adjustment. It is easy to install, with tightly connected components and good sealing performance.

[0005] In view of the above problems, existing patents have provided solutions, but the temperature control of the existing welding spray gun during welding is relatively troublesome when in use. Not only that, the size of the flame ejected from the nozzle during welding is also difficult to control.

[0006] Therefore, a welding spray gun capable of accurately controlling temperature is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a welding spray gun with precise temperature control, which can solve the problem that the temperature control of the existing welding spray gun during welding is more troublesome when the spray gun is used. Not only that, the size of the flame ejected from the nozzle during welding is also difficult to control.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a welding spray gun capable of precise temperature control, comprising a spray gun main pipe, a control valve installed on the left side of the spray gun main pipe, a spray head assembly bolted to the left side of the control valve, and a pressure tank structure installed on the right side of the control valve;

[0009] The nozzle assembly includes a nozzle body, the outer side of the nozzle body is rotatably connected to an outer baffle, the left side of the nozzle body is bolted to a rotating shaft, the inner side of the rotating shaft is rotatably connected to an inner baffle, the outer side of the inner baffle is bolted to a torsion spring, the outer side of the torsion spring is bolted to the rotating shaft, the outer side of the nozzle body is movably connected to a connecting sleeve, the left side of the connecting sleeve is bolted to a pressure ring, and the left side of the pressure ring is in contact with the inner side of the outer baffle.

[0010] Preferably, the pressure tank structure includes a metal tank body, a gas valve is installed on the right side of the metal tank body, and an oxygen valve is installed on the rear side of the metal tank body.

[0011] Preferably, the gas valve and the oxygen valve are both throttle valves, and the metal tank body is made of high-strength alloy steel.

[0012] Preferably, a bracket is provided on the inner wall of the metal tank body, and a fan blade is rotatably connected to the left side of the bracket.

[0013] Preferably, the outer side of the nozzle body is movably connected to an external threaded pipe, and the outer side of the external threaded pipe is threadedly connected to the connecting sleeve.

[0014] Preferably, an extension rod is bolted to the outer side of the connecting sleeve, a rotating ring is bolted to the outer side of the extension rod, and anti-slip grooves are provided on the outer side of the rotating ring.

[0015] Preferably, an assembly seat is bolted to the outer side of the nozzle body, and the inner side of the assembly seat is rotatably connected to the middle part of the outer side of the outer baffle.

[0016] Preferably, a pressure gauge is installed on the front side of the metal tank body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present application provides a spray gun main pipe with a control valve, which can facilitate the control of the gas flow and flow rate supplied to the nozzle assembly. After the gas passes through the nozzle assembly and is electrically ignited, the welding flame spraying effect can be achieved. According to the size of the required spray flame, the horizontal position of the connecting sleeve can be moved on the outside of the spray gun main pipe. At this time, the pressure ring connected thereto will be close to or away from the outer baffle. When it contacts the inner side of the outer baffle and presses, the outer baffle will tilt along the nozzle body and at the same time push the inner baffle to retract along the position of the rotating shaft to reduce the flame spray space, thereby reducing the flame. The gap between the inner baffles is blocked by the outer baffle, so that the flame is not easy to overflow. When it is necessary to amplify the flame, the connecting sleeve can be reversed to move it away from the outer baffle. At this time, the force stored in the torsion spring rebounds and releases to drive the inner baffle to reset, push the outer baffle to reset and spread the flame spray space. The pressure tank structure provided can pre-mix and adjust the proportion of oxygen and gas to achieve welding temperature control;

[0019] 2. Compared with the existing technology, the setting of the pressure tank structure of this application can achieve the effect of regulating the temperature of the jet flame by controlling the allocation of gas and oxygen, and adjust the size of the flame through the nozzle assembly, thereby improving the flexibility of welding flame spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the overall structure diagram of the welding spray gun capable of precise temperature control of the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the nozzle assembly of the utility model;

[0022] Figure 3 This is a schematic diagram of the adjustment of the nozzle assembly of the utility model;

[0023] Figure 4 This is a structural diagram of the connecting sleeve of the utility model;

[0024] Figure 5 This is a structural diagram of the pressure tank structure of the utility model.

[0025] In the figure, 1. spray gun main pipe; 2. control valve; 3. nozzle assembly; 301. nozzle body; 302. outer baffle; 303. inner baffle; 304. rotating shaft; 305. torsion spring; 306. connecting sleeve; 307. pressure ring; 4. pressure tank structure; 401. metal tank body; 402. gas valve; 403. oxygen valve; 404. fan blade; 5. external threaded pipe; 6. extension rod; 7. rotating ring; 8. assembly seat; 9. pressure gauge. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5 , this utility model provides a technical solution:

[0028] A welding spray gun capable of precise temperature control comprises a spray gun main pipe 1, a control valve 2 is installed on the left side of the spray gun main pipe 1, a spray head assembly 3 is bolted to the left side of the control valve 2, and a pressure tank structure 4 is installed on the right side of the control valve 2;

[0029] The nozzle assembly 3 includes a nozzle body 301, the outer side of the nozzle body 301 is rotatably connected to the outer baffle 302, the left side of the nozzle body 301 is bolted to the rotating shaft 304, the inner side of the rotating shaft 304 is rotatably connected to the inner baffle 303, the outer side of the inner baffle 303 is bolted to the torsion spring 305, the outer side of the torsion spring 305 is bolted to the rotating shaft 304, the outer side of the nozzle body 301 is movably connected to the connecting sleeve 306, the left side of the connecting sleeve 306 is bolted to the pressure ring 307, and the left side of the pressure ring 307 is in contact with the inner side of the outer baffle 302.

[0030] In this embodiment, by arranging the spray gun main pipe 1 in conjunction with the control valve 2, the gas flow rate and flow rate supplied to the nozzle assembly 3 can be easily controlled. After the gas passes through the nozzle assembly 3 and is electrically ignited, the welding flame spraying effect can be achieved. According to the size of the required spray flame, the horizontal position of the connecting sleeve 306 can be moved outside the spray gun main pipe 1. At this time, the pressure ring 307 connected thereto will move closer to or away from the outer baffle 302. When contacting the inner side of the outer baffle 302 and pressing and pushing, the outer baffle 302 will tilt along the nozzle body 301, and at the same time push The inner baffles 303 are retracted along the position of the rotating shaft 304 to reduce the flame spray space, thereby reducing the flame. The gaps between the inner baffles 303 are blocked by the outer baffle 302, so that the flame is not easy to overflow. When it is necessary to amplify the flame, the connecting sleeve 306 can be reversed to move it away from the outer baffle 302. At this time, the force stored in the torsion spring 305 rebounds and releases to drive the inner baffle 303 to reset, push the outer baffle 302 to reset and spread the flame spray space. The set pressure tank structure 4 can pre-mix and adjust the proportion of oxygen and fuel gas to achieve control of the welding temperature.

[0031] Specifically, such as Figure 5 As shown, the pressure tank structure 4 includes a metal tank body 401 , a gas valve 402 is installed on the right side of the metal tank body 401 , and an oxygen valve 403 is installed on the rear side of the metal tank body 401 .

[0032] Specifically, such as Figure 1 and Figure 5 As shown, the gas valve 402 and the oxygen valve 403 are both throttle valves, and the metal tank body 401 is made of high-strength alloy steel.

[0033] Specifically, such as Figure 5 As shown, a bracket is provided on the inner wall of the metal tank body 401, and a fan blade 404 is rotatably connected to the left side of the bracket.

[0034] In this embodiment: by setting a metal tank body 401 as a gas mixing space, and introducing gas and oxygen respectively through the gas valve 402 and the oxygen valve 403, and adjusting the ratio of oxygen and gas according to the required temperature, the throttle valve can accurately control the intake volume. The gas valve 402 made of high-strength alloy steel has high strength and pressure resistance, and is not easily deformed due to excessive gas filling. The bracket is provided in conjunction with the fan blades 404, which can break up and mix the gas when it passes through, so that the gas mixing effect is better when it flows quickly.

[0035] Specifically, such as Figure 2 、 Figure 3 、 Figure 4 As shown, the outer side of the nozzle body 301 is movably connected to an external threaded pipe 5 , and the outer side of the external threaded pipe 5 is threadedly connected to the connecting sleeve 306 .

[0036] Specifically, such as Figure 2 、 Figure 3 、 Figure 4 As shown, the outer side of the connecting sleeve 306 is bolted with an extension rod 6, the outer side of the extension rod 6 is bolted with a rotating ring 7, and the outer side of the rotating ring 7 is provided with anti-slip grooves.

[0037] In this embodiment: by providing an external threaded tube 5, the horizontal position of the connecting sleeve 306 can be adjusted by threaded engagement when the connecting sleeve 306 is rotated. The provided extension rod 6 cooperates with the rotating ring 7 to extend the distance between the person's hands and the nozzle body 301 to avoid burns. The provided anti-slip texture can prevent the hands from slipping.

[0038] Specifically, such as Figure 1 and Figure 2 As shown, the outer side of the nozzle body 301 is bolted with an assembly seat 8 , and the inner side of the assembly seat 8 is rotatably connected to the middle part of the outer side of the outer baffle 302 .

[0039] Specifically, such as Figure 1 As shown, a pressure gauge 9 is installed on the front side of the metal tank body 401.

[0040] In this embodiment, the assembly seat 8 is provided to facilitate connection to the outer baffle 302 and to facilitate rotation and tilting thereof. The pressure gauge 9 provided can facilitate observation of the gas pressure inside the metal tank body 401 .

[0041] Working principle: When welding, firstly, gas and oxygen are introduced into the metal tank 401 through the gas valve 402 and the oxygen valve 403 respectively. The gas valve 402 and the oxygen valve 403 are adjusted according to the required temperature to control the ratio of oxygen and gas. The throttle valve can accurately control the air intake. The gas valve 402 made of high-strength alloy steel has high strength and pressure resistance, and is not easily deformed due to excessive gas filling. The bracket is equipped with fan blades 404, which can break up and mix the gas when it passes through, so that the mixing effect of the gas is better when it flows quickly. The gas is supplied to the nozzle assembly 3 through the spray gun main pipe 1 and the control valve 2. After the gas passes through the nozzle assembly 3 and is electrically ignited, the welding flame spraying effect can be achieved. According to the size of the required spray flame, the horizontal position of the connecting sleeve 306 can be moved outside the spray gun main pipe 1. At this time, the pressure ring 307 connected thereto will move closer to or away from the outer baffle 302. When contacting the inner side of the outer baffle 302 and pressing and pushing, the outer baffle 302 will tilt along the nozzle body 301, and at the same time push the inner baffle 303 to retract along the position of the rotating shaft 304, so as to reduce the spray space of the flame, thereby reducing the effect of reducing the flame. The gap between the inner baffles 303 is blocked by the outer baffle 302, so that the flame is not easy to overflow. When it is necessary to amplify the flame, the connecting sleeve 306 can be reversed to move it away from the outer baffle 302. At this time, the force stored in the torsion spring 305 is released to rebound and drive the inner baffle 303 to reset, push the outer baffle 302 to reset and expand the spray space of the flame.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A welding spray gun capable of precise temperature control, comprising a spray gun main pipe (1), characterized in that: A control valve (2) is installed on the left side of the spray gun main pipe (1), a spray head assembly (3) is bolted to the left side of the control valve (2), and a pressure tank structure (4) is installed on the right side of the control valve (2); The nozzle assembly (3) comprises a nozzle body (301), the outer side of the nozzle body (301) is rotatably connected to an outer baffle (302), the left side of the nozzle body (301) is bolted to a rotating shaft (304), the inner side of the rotating shaft (304) is rotatably connected to an inner baffle (303), the outer side of the inner baffle (303) is bolted to a torsion spring (305), the outer side of the torsion spring (305) is bolted to the rotating shaft (304), the outer side of the nozzle body (301) is movably connected to a connecting sleeve (306), the left side of the connecting sleeve (306) is bolted to a pressing ring (307), and the left side of the pressing ring (307) contacts the inner side of the outer baffle (302).

2. A precisely temperature-controlled welding spray gun according to claim 1, characterized in that: The pressure tank structure (4) comprises a metal tank body (401), a gas valve (402) is installed on the right side of the metal tank body (401), and an oxygen valve (403) is installed on the rear side of the metal tank body (401).

3. The precisely temperature-controlled welding spray gun according to claim 2, characterized in that: The gas valve (402) and the oxygen valve (403) are both throttle valves, and the metal tank body (401) is made of high-strength alloy steel.

4. The precisely temperature-controlled welding spray gun according to claim 3, characterized in that: A bracket is provided on the inner wall of the metal tank body (401), and a fan blade (404) is rotatably connected to the left side of the bracket.

5. The welding spray gun capable of precise temperature control according to claim 1, characterized in that: The outer side of the nozzle body (301) is movably connected to an external threaded tube (5), and the outer side of the external threaded tube (5) is threadedly connected to the connecting sleeve (306).

6. The precisely temperature-controlled welding spray gun according to claim 5, characterized in that: An extension rod (6) is bolted to the outside of the connecting sleeve (306), a rotating ring (7) is bolted to the outside of the extension rod (6), and anti-slip grooves are provided on the outside of the rotating ring (7).

7. The precisely temperature-controlled welding spray gun according to claim 1, characterized in that: An assembly seat (8) is bolted to the outside of the nozzle body (301), and the inside of the assembly seat (8) is rotatably connected to the middle of the outside of the outer baffle (302).

8. The precisely temperature-controlled welding spray gun according to claim 2, characterized in that: A pressure gauge (9) is installed on the front side of the metal tank body (401).

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