Injection and suction type welding torch

Abstract

The utility model provides an injection type welding torch which comprises a handle, a control module is fixedly installed in the handle, an acetylene / propane connector and an oxygen connector are fixedly installed at one end of the handle, and a first double-cavity gas guide pipe is fixedly installed at the other end of the handle. The first double-cavity gas guide pipe is fixedly connected with the injection and suction pipe through the second double-cavity gas guide pipe, a mixed gas pipe is detachably and fixedly installed on the injection and suction pipe, and a welding head is detachably and fixedly installed at the head end of the mixed gas pipe. By means of the overall arrangement, welding flames with the sizes needed by various different welding materials can be stored, and therefore when the same materials are intermittently welded, the flames can automatically and rapidly reach the needed sizes only by selecting shortcut keys of the needed flames during ignition every time, and the welding efficiency is greatly improved. Therefore, the size of the flame does not need to be manually adjusted again, and the whole process is more convenient, more flexible and more efficient when materials are welded.

Description

Technical Field

[0001] The utility model belongs to the field of welding torches, and particularly relates to a suction-type welding torch. Background Art

[0002] A suction-type welding torch is a welding torch that sucks in a low-pressure combustible gas (such as acetylene) by the ejecting action of a jet of oxygen and mixes it with oxygen.

[0003] A suction-type welding torch is a commonly used welding device, mainly used for heating two or more metal materials and fusing them together at their contact points.

[0004] However, in the existing suction-type welding torch, during the use process, when performing intermittent welding on multiple materials of the same specification, once it is turned off and then restarted, it is necessary to readjust the flame size again, which is very cumbersome and affects the welding efficiency.

[0005] Therefore, it is very necessary to invent a suction-type welding torch. Content of the Utility Model

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model for a suction-type welding torch is as follows: A suction-type welding torch includes a handle, wherein: a control module is fixedly installed inside the handle, and an acetylene / propane joint and an oxygen joint are fixedly installed at one end of the handle, and a double-chamber air duct I is fixedly installed at the other end of the handle; the double-chamber air duct I is fixedly connected to a suction pipe through a double-chamber air duct II, and a mixing air duct is detachably fixedly installed on the suction pipe, and a welding head is detachably fixedly installed at the head end of the mixing air duct.

[0007] Preferably, a solenoid valve A for adjusting the flow rate of acetylene / propane gas is fixedly installed on the double-chamber air duct I;

[0008] Preferably, a solenoid valve B for adjusting the oxygen flow rate is fixedly installed on the suction pipe;

[0009] Preferably, the control module is provided with a corresponding display screen, a flame size shortcut key, and a flame size adjustment key;

[0010] Preferably, the display screen, the flame size shortcut key, and the flame size adjustment key are all fixedly installed on the handle;

[0011] Preferably, the solenoid valve A and the solenoid valve B are communicatively electrically connected to the control module inside the handle, and the power cord of the control module passes out from the tail of the handle.

[0012] Preferably, a first channel and a second channel are respectively formed inside the first double-chamber air duct and the second double-chamber air duct. The first channel on the first double-chamber air duct is communicated with the first channel on the second double-chamber air duct and the acetylene / propane connector, and the second channel on the first double-chamber air duct is communicated with the second channel on the second double-chamber air duct and the oxygen connector. The air inlet end of the solenoid valve A is communicated with the first channel inside the first double-chamber air duct, and the air outlet end of the solenoid valve A is communicated with the first channel inside the second double-chamber air duct. The air inlet end of the solenoid valve B is communicated with the second channel inside the second double-chamber air duct, and the air outlet end of the solenoid valve B is communicated with the injection suction pipe.

[0013] Preferably, a first key slot and a second key slot are formed on the handle. The display screen is located between the first key slot and the second key slot. The flame size adjustment keys are evenly and fixedly installed in the first key slot. The flame size shortcut keys are evenly and fixedly installed in the second key slot.

[0014] Preferably, the flame size adjustment keys include a power key, a solenoid valve A selection key, a solenoid valve B selection key, a confirmation key, an up adjustment key and a down adjustment key, and the power key, the solenoid valve A selection key, the solenoid valve B selection key, the confirmation key, the up adjustment key and the down adjustment key are evenly and fixedly installed in the first key slot.

[0015] Preferably, the flame size shortcut keys include a shortcut key one, a shortcut key two and a shortcut key three, and the shortcut key one, the shortcut key two and the shortcut key three are evenly and fixedly installed in the second key slot.

[0016] Compared with the prior art, the advantages of the present utility model are as follows:

[0017] With the overall arrangement of the present utility model, welding flames of various sizes required for different welding materials can be stored. When welding the same material intermittently, each time the fire is started, only the shortcut key of the required flame needs to be selected, and the flame can automatically and quickly reach the required size, so that it is no longer necessary to manually adjust the flame size again. Therefore, the overall process is more convenient, flexible and efficient when welding materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present utility model.

[0019] Figure 2 is the partial enlarged structural schematic diagram at A of the present utility model.

[0020] Figure 3 is the partial enlarged structural schematic diagram at A of the present utility model.

[0021] In the figure:

[0022] Handle 1, acetylene / propane connector 2, oxygen connector 3, double-chamber gas pipe one 4, double-chamber gas pipe two 5, solenoid valve A 6, solenoid valve B 7, injection suction pipe 8, mixing gas pipe 9, welding head 10, display screen 11, key slot one 12, key slot two 13, power key 14, solenoid valve A selection key 15, solenoid valve B selection key 16, confirmation key 17, up key 18, down key 19, shortcut key one 20, shortcut key two 21, shortcut key three 22, power cord 23. Detailed implementation manner

[0023] In order to enable those skilled in the art of the present technology to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the embodiments, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] The following further describes the present utility model with reference to the drawings:

[0026] Embodiment

[0027] Refer to Figures 1 - 3, A suction - type welding torch, including a handle 1, wherein: A control module is fixedly installed inside the handle 1, and an acetylene / propane joint 2 and an oxygen joint 3 are fixedly installed at one end of the handle 1 to be connected to the required gas supply equipment through the acetylene / propane joint 2 and the oxygen joint 3. A double - chamber gas pipe 4 is fixedly installed at the other end of the handle 1 to convey the required gas; The double - chamber gas pipe 4 is fixedly connected to a suction pipe 8 through a double - chamber gas pipe 5 to convey the required gas into the suction pipe 8 through the double - chamber gas pipe 5. A mixing gas pipe 9 is detachably and fixedly installed on the suction pipe 8 so that the required gases are mixed in the mixing gas pipe 9, and a welding head 10 is detachably and fixedly installed at the head end of the mixing gas pipe 9;

[0028] A solenoid valve A6 for adjusting the flow rate of acetylene / propane gas is fixedly installed on the double - chamber gas pipe 4 to quickly and accurately adjust the required flow rate of acetylene / propane gas;

[0029] A solenoid valve B7 for adjusting the oxygen flow rate is fixedly installed on the suction pipe 8 to quickly and accurately adjust the required oxygen flow rate;

[0030] Both the solenoid valve A6 and the solenoid valve B7 adopt existing technologies, such as the Sanlixin micro - fluid solenoid valve with a weight less than 16 grams, an outer diameter of 0 to 10 mm, and a working pressure of 0 to 50 bar, but not limited to this one type, and it can also be other models of micro - solenoid valves;

[0031] The control module is provided with a corresponding display screen 11, a flame size shortcut key, and a flame size adjustment key; The display screen 11, the flame size shortcut key, and the flame size adjustment key are all fixedly installed on the handle 1 so that the operator can adjust and select the required welding flame;

[0032] The solenoid valve A6 and the solenoid valve B7 are communicatively and electrically connected to the control module inside the handle 1, and the power cord 23 of the control module passes out from the tail of the handle 1 to adjust and control the solenoid valve A6 and the solenoid valve B7.

[0033] A first channel and a second channel are respectively opened inside the double - chamber gas pipe 4 and the double - chamber gas pipe 5. The first channel on the double - chamber gas pipe 4 is communicated with the first channel on the double - chamber gas pipe 5 and the acetylene / propane joint 2. The second channel on the double - chamber gas pipe 4 is communicated with the second channel on the double - chamber gas pipe 5 and the oxygen joint 3; The intake end of the solenoid valve A6 is communicated with the first channel inside the double - chamber gas pipe 4, and the outlet end of the solenoid valve A6 is communicated with the first channel inside the double - chamber gas pipe 5 to control the flow rate of acetylene / propane; The intake end of the solenoid valve B7 is communicated with the second channel inside the double - chamber gas pipe 5, and the outlet end of the solenoid valve B7 is communicated with the suction pipe 8 to control the flow rate of oxygen.

[0034] The handle 1 is provided with a first key slot 12 and a second key slot 13; the display screen 11 is located between the first key slot 12 and the second key slot 13; the flame size adjustment keys are evenly and fixedly installed in the first key slot 12; the flame size shortcut keys are evenly and fixedly installed in the second key slot 13; to prevent accidental touch of the flame size adjustment keys and the flame size shortcut keys during use.

[0035] The flame size adjustment keys include a power key 14, a solenoid valve A selection key 15, a solenoid valve B selection key 16, a confirmation key 17, an up key 18 and a down key 19, and the power key 14, the solenoid valve A selection key 15, the solenoid valve B selection key 16, the confirmation key 17, the up key 18 and the down key 19 are evenly and fixedly installed in the first key slot 12; so as to adjust the opening degrees of the solenoid valve A6 and the solenoid valve B7.

[0036] The flame size shortcut keys include a first shortcut key 20, a second shortcut key 21 and a third shortcut key 22, and the first shortcut key 20, the second shortcut key 21 and the third shortcut key 22 are evenly and fixedly installed in the second key slot 13; so as to store the states of three different opening degrees of the solenoid valve A6 and the solenoid valve B7, so that during use, the solenoid valve A6 and the solenoid valve B7 can be quickly adjusted to the required opening degrees.

[0037] In this embodiment, when it is necessary to flexibly adjust the welding flame according to the welding material, first press the solenoid valve A selection key 15, and then the opening degree of the solenoid valve A6 can be adjusted through the up key 18 and the down key 19. When the opening degree of the solenoid valve A6 is adjusted properly;

[0038] Then press the solenoid valve B selection key 16, and the opening degree of the solenoid valve B7 can be adjusted through the up key 18 and the down key 19;

[0039] In this way, the size of the flame can be changed in real time according to the welding material.

[0040] In this embodiment, when it is necessary to store three different sizes of welding flames, first press the solenoid valve A selection key 15, and adjust the solenoid valve A6 to the required opening degree through the up key 18 and the down key 19; then press the solenoid valve B selection key 16, and adjust the solenoid valve B selection key 16 to the required opening degree through the up key 18 and the down key 19; at this time, press the first shortcut key 20, and then press the confirmation key 17, and the flame can be stored on the first shortcut key 20;

[0041] At the same time, in the above way, store the other two different flames on the second shortcut key 21 and the third shortcut key 22 respectively;

[0042] In this way, when performing intermittent multiple weldings on the same material, each time the machine is started, only the corresponding shortcut key needs to be selected, thus avoiding the trouble of adjusting the flame.

[0043] Any technical solution using the technical solution of the present utility model or designed by those skilled in the art inspired by the technical solution of the present utility model to achieve the above technical effects shall fall within the protection scope of the present utility model.

Claims

1. An injection-suction welding torch, characterized in that: The invention comprises a handle (1), wherein: a control module is fixedly installed inside the handle (1), and an acetylene / propane joint (2) and an oxygen joint (3) are fixedly installed on one end of the handle (1), and a double-lumen airway tube (4) is fixedly installed on the other end of the handle (1); the double-lumen airway tube (4) is fixedly connected to an ejection and suction tube (8) through a double-lumen airway tube (5), and a mixed gas tube (9) is detachably fixedly installed on the ejection and suction tube (8), and a welding head (10) is detachably fixedly installed on the head end of the mixed gas tube (9); The control module is provided with a corresponding display screen (11), a flame size shortcut key and a flame size adjustment key, and the display screen (11), the flame size shortcut key and the flame size adjustment key are all fixedly mounted on the handle (1), and a power cord (23) of the control module is passed through the rear end of the handle (1); A solenoid valve A (6) for adjusting the flow rate of acetylene / propane gas is fixedly installed on the double-lumen airway tube 1 (4); A solenoid valve B (7) for adjusting the oxygen flow rate is fixedly mounted on the injection and suction pipe (8); The solenoid valve A (6) and the solenoid valve B (7) are electrically connected to the control module inside the handle (1) for communication.

2. The suction-injection welding torch according to claim 1, characterized in that: The double-lumen airway tube 1 (4) and the double-lumen airway tube 2 (5) are each provided with a first cavity and a second cavity, and the first cavity on the double-lumen airway tube 1 (4) is in communication with the first cavity on the double-lumen airway tube 2 (5) and the acetylene / propane connector (2), and the second cavity on the double-lumen airway tube 1 (4) is in communication with the second cavity on the double-lumen airway tube 2 (5) and the oxygen connector (3); the air inlet end of the solenoid valve A (6) is in communication with the first cavity inside the double-lumen airway tube 1 (4), and the air outlet end of the solenoid valve A (6) is in communication with the first cavity inside the double-lumen airway tube 2 (5); the air inlet end of the solenoid valve B (7) is in communication with the second cavity inside the double-lumen airway tube 2 (5), and the air outlet end of the solenoid valve B (7) is in communication with the injection and suction tube (8).

3. The suction-injection welding torch according to claim 1, characterized in that: The handle (1) is provided with a key slot one (12) and a key slot two (13); the display screen (11) is located between the key slot one (12) and the key slot two (13); the flame size adjustment keys are evenly distributed and fixedly installed in the key slot one (12); and the flame size shortcut keys are evenly distributed and fixedly installed in the key slot two (13).

4. The suction-injection welding torch according to claim 3, characterized in that: The flame size adjustment key comprises a power key (14), a solenoid valve A selection key (15), a solenoid valve B selection key (16), a confirmation key (17), an upward adjustment key (18) and a downward adjustment key (19), and the power key (14), the solenoid valve A selection key (15), the solenoid valve B selection key (16), the confirmation key (17), the upward adjustment key (18) and the downward adjustment key (19) are evenly distributed and fixedly installed in the key slot 1 (12).

5. The suction-injection welding torch according to claim 3, characterized in that: The flame size shortcut keys include shortcut key 1 (20), shortcut key 2 (21) and shortcut key 3 (22), and the shortcut key 1 (20), shortcut key 2 (21) and shortcut key 3 (22) are evenly distributed and fixedly installed in key slot 2 (13).

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