CN220218393U

CN220218393U - Handle of liquefied gas spray gun

Info

Publication number: CN220218393U
Application number: CN202321785449.4U
Authority: CN
Inventors: 迪迪埃·吉尔贝特
Original assignee: Wujiangji Baixun Heating Tools Co ltd
Current assignee: Wujiangji Baixun Heating Tools Co ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2023-12-22
Anticipated expiration: 2033-07-07

Abstract

The utility model discloses a handle of a liquefied gas spray gun, which comprises a handle shell and a metal connecting pipe inserted into the handle shell. The handle further comprises: the connector comprises a rotating part inserted into the handle shell and a connecting part used for connecting a liquefied gas supply hose; the outer connecting sleeve is arranged in the handle shell and is provided with a far end part and a near end part which are opposite, the near end part of the metal connecting tube is fixedly connected with the far end part of the outer connecting sleeve, and the rotating part is rotatably connected with the near end part of the outer connecting sleeve around a rotating shaft core line; the pipe cavity of the metal connecting pipe is communicated with the inner cavity of the joint, and the rotation axis is parallel or coincident with the center line of the metal connecting pipe. The handle of the liquefied gas spray gun reduces the torsion of the pipeline.

Description

Handle of liquefied gas spray gun

Technical Field

The utility model belongs to the technical field of liquefied gas spray guns, and particularly relates to a handle of a liquefied gas spray gun.

Background

The liquefied spray gun is a heating and welding tool using liquefied gas as fuel, and the working principle is that the gas is sprayed out of a muzzle by pressure regulation and flow conversion, and the gas is contacted with air at a nozzle and ignited, so that high Wen Zhuxing flame is formed to perform the work of heating and welding and the like. The spray gun comprises a handle for holding, one end of the handle is communicated with the liquefied gas tank through a hose, and the other end of the handle is communicated with the nozzle. When the operation of flaming is carried out, according to the difference of flaming position, the angle of the handle needs to be changed to enable the spray head to be just opposite to the part needing flaming, in the process, the pipeline connected with the liquefied gas tank is easy to twist, the pipeline is easy to damage, and even leakage risks are caused.

Disclosure of Invention

In order to solve the technical problems, the utility model provides an improved handle of a liquefied gas spray gun, which can reduce the torsion of a pipeline.

The utility model adopts the following technical scheme:

the handle of liquefied gas spray gun includes handle shell and inserts and locate the metal connecting pipe in the handle shell, the handle still includes:

the connector comprises a rotating part inserted into the handle shell and a connecting part used for connecting a liquefied gas supply hose;

the outer connecting sleeve is arranged in the handle shell and is provided with a far end part and a near end part which are opposite, the near end part of the metal connecting tube is fixedly connected with the far end part of the outer connecting sleeve, and the rotating part is rotatably connected with the near end part of the outer connecting sleeve around a rotating shaft core line;

the pipe cavity of the metal connecting pipe is communicated with the inner cavity of the joint, and the rotation axis is parallel or coincident with the center line of the metal connecting pipe.

Preferably, the connection comprises a tubular body and a connection flange extending outwardly from an outer surface of the tubular body.

More preferably, the number of the connection flanges is plural and is arranged at intervals along the length direction of the tubular body.

Preferably, at least one of the connection flanges has a proximal slope farther from the connection portion and a distal slope nearer to the connection portion, the proximal slope having an angle with the length direction of the tubular body that is smaller than the angle between the distal slope and the length direction of the tubular body, and a cross section of the connection flange along the length direction of the tubular body includes a rectangle, a rounded rectangle, a triangle, or a rounded triangle.

Specifically, the cross section of the connecting flange along the length direction of the tubular body is a rounded rectangle or a rounded triangle.

More preferably, the tubular body has a proximal end portion with a truncated cone shape.

Preferably, the handle further comprises a hollow shaft arranged in the outer connecting sleeve, one end of the hollow shaft is inserted into the proximal end portion of the metal connecting pipe and sealed, the other end of the hollow shaft is inserted into the rotating portion in a relatively rotatable manner and sealed, and the hollow shaft is arranged in a hollow manner and communicates the lumen of the metal connecting pipe with the inner cavity of the joint.

Preferably, the proximal end portion of the metal connection tube is fixedly inserted into the distal end portion of the outer connection sleeve.

More preferably, the proximal end of the metal connection end and the distal end of the outer connection sleeve are connected by threads and sealed by a sealant layer therebetween.

Preferably, the handle further comprises a limiting clamp spring for limiting the rotating part to move along the axis of the rotating shaft relative to the outer connecting sleeve.

Preferably, the limiting clamp spring is arranged on the outer connecting sleeve and provided with a limiting section positioned in the outer connecting sleeve, a circle of groove is formed in the outer surface of the rotating part along the circumferential direction of the rotating part, and the limiting section is clamped in the groove.

More preferably, the limit clamp spring comprises two arc sections, the two arc sections are connected through the two limit sections, the limit sections linearly extend, and one of the arc sections is provided with a breaking notch to allow the limit clamp spring to deform.

Compared with the prior art, the utility model has the following advantages:

according to the handle of the liquefied gas spray gun, the rotating part on the connector is rotatably connected with the outer connecting sleeve, so that the torsion degree of the liquefied gas supply hose can be reduced, the torsion of the liquefied gas supply hose can be avoided even completely, the service time of the gas supply hose can be prolonged, and the leakage risk can be reduced in the process of changing the angle of the handle.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a handle of a liquefied gas injection lance in accordance with an embodiment of the present utility model;

FIG. 2 is a side view of the handle of a liquefied gas injection lance in accordance with an embodiment of the present utility model;

FIG. 3 is a top view of the handle of a liquefied gas injection lance in accordance with an embodiment of the present utility model;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a partial enlarged view at D in FIG. 4;

fig. 7 is a sectional view taken along the direction B-B in fig. 4.

Wherein,

1. a handle housing;

2. a metal connecting pipe; 21. a lumen;

3. a joint; 31. a rotating part; 311. a groove; 32. a connection part; 321. a tubular body; 322. a connecting flange; 3221. a proximal bevel; 3222. a distal ramp; 33. an inner cavity;

4. an outer connecting sleeve; 41. a distal end portion; 42. a proximal portion; 43. a container;

5. a hollow shaft; 6. limiting snap springs; 61. a limiting section; 62. a circular arc section; 621. breaking the notch; 7. a seal ring; 8. a shaft sleeve.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

The embodiment provides a handle of liquefied gas spray gun, and the one end of handle is through hose and liquefied gas cylinder bottle intercommunication, and the other end passes through air duct and nozzle intercommunication. The handle is also provided with a valve for adjusting the release amount of the fuel gas and a spray gun switch for adjusting the on-off of the pipeline. When in use, the spray gun switch is slightly loosened, and the spray gun is directly ignited at the spray nozzle. The handle of the liquefied gas spray gun of the present embodiment is specifically described below.

Referring to fig. 1 to 7, the handle includes a handle housing 1, a metal connection pipe 2, a joint 3, an outer connection sleeve 4, a hollow shaft 5 and a limit clamp spring 6. Wherein, the metal connecting pipe 2 is inserted into the handle shell 1 and is used as a part of the air duct or is connected with the air duct. More specifically, the metal connection pipe 2 is an aluminum alloy pipe.

Further, the joint 3 includes a rotating portion 31 and a connecting portion 32 for connecting a liquefied gas supply hose (not shown in the drawings), and the rotating portion 31 and the connecting portion 32 are integrally provided. Specifically, the liquefied gas supply hose is sleeved on the connection portion 32, and the rotation portion 31 is inserted into the handle case 1.

The connection portion 32 includes a tubular body 321 and a connection flange 322 extending outwardly from an outer surface of the tubular body 321. The tubular body 321 has a proximal end portion in the shape of a truncated cone, and the number of the connection flanges 322 is plural and arranged at intervals along the length direction of the tubular body 321.

Further, as shown in connection with fig. 4 and 5, at least one connecting flange 322 has a proximal bevel 3221 and a distal bevel 3222, wherein the proximal bevel 3221 is further from the tubular body 321 and the distal bevel 3222 is closer to the tubular body 321. The angle between the proximal bevel 3221 and the length of the tubular body 321 is smaller than the angle between the distal bevel 3222 and the length of the tubular body 321, and the connection flange 322 is designed to allow the hose to be more easily sleeved on the connection portion 32. The cross section of the connecting flange 322 along the length of the tubular body 321 includes a rectangle, rounded rectangle, triangle, or rounded triangle. In particular, in this embodiment, the shape of the connecting flange 322 is rounded rectangle as well as rounded triangle.

Referring to fig. 4, a sleeve 8 is provided between the outer joint sleeve 4 and the rotating part 31. The outer connection sleeve 4 is arranged in the handle housing 1 and has opposite distal and proximal ends 41, 42. The metal connection tube 2 also has a distal end portion and an opposite proximal end portion, the distal end portion of the metal connection tube 2 being located at the distal end portion of the handle, and the outer connection sleeve 4 being located at the proximal end portion of the handle. The proximal end portion of the metal connection tube 2 is fixedly inserted into the distal end portion 41 of the outer connection sleeve 4. More specifically, the proximal end portion of the metal connection tube 2 and the distal end portion 41 of the outer connection sleeve 4 are screwed and sealed by a sealant layer therebetween. The proximal portion 42 in this embodiment refers to a direction approaching the body of the operator when the liquefaction spray gun is operated, and the distal portion 41 refers to a direction away from the body.

The rotating part 31 is rotatably connected to the proximal end 42 of the outer connecting sleeve 4 around the axis of rotation, the connecting part 32 and the rotating part 31 are integrally provided, and the liquefied gas supply hose is sleeved on the connecting part 32. When the liquefied gas spray gun is used for flaming, the direction of the handle can be changed at will, the handle and the liquefied gas supply hose are not easy to twist, the flaming direction or position can be changed at will, and the use is more flexible and convenient.

The metal connecting pipe 2 is provided with a pipe cavity 21, the joint 3 is provided with an inner cavity 33, the pipe cavity 21 of the metal connecting pipe 2 and the inner cavity 33 of the joint 3 are communicated with each other, and the rotation axis line is parallel or coincident with the center line of the metal connecting pipe 2. In particular, in this embodiment, the rotation axis coincides with the center line of the metal connection pipe 2, and in other embodiments, the rotation axis may also be parallel to the center line of the metal connection pipe 2.

Further, the hollow shaft 5 is disposed in the outer connecting sleeve 4, one end of the hollow shaft 5 is inserted into the proximal end portion of the metal connecting tube 2 and sealed by the sealing ring 7, the other end of the hollow shaft 5 is relatively rotatably inserted into the rotating portion 31 and sealed by the sealing ring 7, the hollow shaft 5 is hollow and communicates the lumen 21 of the metal connecting tube 2 with the inner cavity 33 of the joint 3, that is, the interiors of the metal connecting tube 2, the hollow shaft 5 and the joint 3 are mutually communicated.

The limiting clamp spring 6 is used for limiting the movement of the rotating part 31 relative to the outer connecting sleeve 4 along the rotation axis. As shown in fig. 4 and 7, the limit clamp spring 6 is disposed on the outer connecting sleeve 4 and has a limit section 61 located in the outer connecting sleeve 4, and a circle of groove 311 is formed on the outer surface of the rotating portion 31 along the circumferential direction of the outer surface, and the limit section 61 is clamped in the groove 311.

Further, the limit clamp spring 6 includes two arc sections 62, the two arc sections 62 are connected by two limit sections 61, the limit sections 61 linearly extend, and one of the arc sections 62 has a breaking notch 621 to allow the limit clamp spring 6 to deform. Further, the limit clamp spring 6 is arranged in the outer connecting sleeve 4 in a penetrating way, the outer surface of the limit clamp spring is provided with a containing groove 43, and the two arc sections 62 are positioned in the containing groove 43; the outer connecting sleeve 4 is further provided with a through hole, the through hole is communicated with the containing groove 43, and the limiting section 61 penetrates through the through hole and then enters the outer connecting sleeve 4, so that the limiting section can be matched with the groove 311 on the joint 3. During assembly, the joint 3 is pushed into the outer connecting sleeve 4 until the accommodating groove 43 on the outer connecting sleeve 4, the through hole and the groove 311 on the joint 3 are aligned, two end parts of a U-shaped limit clamp spring which is not bent (namely, the clamp spring is integrally U-shaped, two end parts linearly extend and are consistent with the length direction of the limit section 61) penetrate into the outer connecting sleeve 4 from the through hole, and penetrate out from the opposite side through hole after passing through the groove 311, then the part penetrating out into the outer connecting sleeve 4 is bent, and is pressed into the accommodating groove 43 on the outer connecting sleeve 4 to form an arc section 62 with a notch, and the two limit sections 61 are positioned in the groove 311 to allow the joint 3 to rotate between the two limit sections 61 and not move along the axial direction.

In the handle of the liquefied gas spray gun of this embodiment, the connecting portion 32 of the connector 3 is connected with the liquefied gas supply hose, and the rotating portion 31 is rotatably connected with the outer connecting sleeve 4, when the liquefied gas spray gun is used for flaming, the torsion degree of the liquefied gas supply hose is reduced, and even the liquefied gas supply hose is completely prevented from being twisted, so that the service time of the gas supply hose is prolonged, and the leakage risk is reduced.

As used in this specification and in the claims, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The term "and/or" as used herein includes any combination of one or more of the associated listed items.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present utility model are merely with respect to the mutual positional relationship of the constituent elements of the present utility model in the drawings.

The above-described embodiments are provided for illustrating the technical concept and features of the present utility model, and are intended to be preferred embodiments for those skilled in the art to understand the present utility model and implement the same according to the present utility model, not to limit the scope of the present utility model. All equivalent changes or modifications made according to the principles of the present utility model should be construed to be included within the scope of the present utility model.

Claims

1. The utility model provides a handle of liquefied gas spray gun, includes handle shell and inserts and locate the metal connecting pipe in the handle shell, its characterized in that, the handle still includes:

2. The handle of a liquefied gas spray gun as claimed in claim 1, wherein said connection portion includes a tubular body and a connection flange extending outwardly from an outer surface of said tubular body.

3. The handle of a liquefied gas spray gun as claimed in claim 2, wherein said connection flanges are plural in number and are spaced apart along the length of said tubular body.

4. A handle for a liquefied gas injection lance according to claim 3, wherein at least one of said connection flanges has a proximal slope remote from said connection and a distal slope remote from said connection, said proximal slope having a smaller angle with the length of said tubular body than said distal slope and the length of said tubular body, and wherein the cross section of said connection flange along the length of said tubular body comprises a rectangle, rounded rectangle, triangle or rounded triangle.

5. The handle of a liquefied gas spray gun as claimed in claim 2, wherein said tubular body has a proximal end portion having a truncated cone shape.

6. The handle of a liquefied gas spray gun according to claim 1, further comprising a hollow shaft disposed in the outer connecting sleeve, one end of the hollow shaft being inserted into a proximal end portion of the metal connecting tube and sealed, the other end of the hollow shaft being relatively rotatably inserted into the rotating portion and sealed, the hollow shaft being disposed in a hollow manner and communicating a lumen of the metal connecting tube with an inner cavity of the joint.

7. The handle of a liquefied gas injection lance of claim 6 wherein the proximal end of the metal connecting tube is fixedly inserted into the distal end of the outer connecting sleeve.

8. The handle of a liquefied gas injection lance of claim 7 wherein the proximal end of the metal connection tube and the distal end of the outer connection sleeve are threadably connected and sealed therebetween by a sealant layer.

9. The handle of a liquefied gas spray gun of claim 1, further comprising a limit clip for limiting movement of said rotating portion relative to said outer adapter sleeve along said rotational axis.

10. The handle of the liquefied gas spray gun according to claim 9, wherein the limit clamp spring is arranged on the outer connecting sleeve and provided with a limit section positioned in the outer connecting sleeve, a circle of groove is formed in the outer surface of the rotating part along the circumferential direction of the rotating part, and the limit section is clamped in the groove.