Thermal energy welding adapter and thermal energy welding equipment

Abstract

The invention relates to the technical field of welding devices, and provides a heat energy welding conversion connector and heat energy welding device.The heat energy welding conversion connector comprises a connector body and a welding flux pipe, the connector body is of a cylindrical structure, the first end of the connector body is connected with a flame outlet pipe of a flame spray gun, and an air inlet hole and a first exhaust hole are formed in the side wall of the connector body; combustion-supporting gas enters the connector body through the gas inlet hole, and combustion waste gas is exhausted through the first exhaust hole. Strip-shaped welding filler extends into the welding flux pipe, the first end of the fixed end is open, the second end of the fixed end is communicated with the connector body, the welding filler is gradually molten and softened under heating of flame flow at the second end of the connector body, and the molten and softened welding filler is output through the second end of the connector body. And the molten and softened welding filler enters a splicing seam of the floor cloth, and welding of the floor cloth is completed after cooling. Thus, welding of the floor cloth is achieved through combustion heat energy of the fuel, dependence on a power source is removed, and welding of the floor cloth can be achieved in the scene without the power source.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and provides a thermal welding conversion joint and thermal welding equipment. Background Technology

[0002] Currently, rail vehicles typically have floor coverings to ensure the aesthetics of the interior and the safety and comfort of passengers. These floor coverings are mostly made of PVC. During installation, multiple sections of the covering are glued together, and then the seams are welded using a plug-in handheld welding machine. However, these plug-in handheld welding machines rely on a power source. In situations where there is no power supply, such as during outdoor maintenance of rail vehicles, it is impossible to use them to weld newly laid or repaired floor coverings. The rail vehicle must be towed to a location with power for the work to proceed, which reduces efficiency and incurs significant costs such as towing and parking fees.

[0003] Therefore, how to solve the problem of welding flooring in scenarios without power supply has become an important technical problem for those skilled in the art. Summary of the Invention

[0004] This invention provides a thermal welding conversion joint and a thermal welding device to solve the defect in related technologies that flooring cannot be welded in scenarios without power, and to remove the limitation of power supply on the operation of welding flooring.

[0005] This invention provides a thermal welding conversion joint, comprising: The connector body has a cylindrical structure. The first end of the connector body is adapted to connect to the flame outlet pipe of the flame gun. The second end of the connector body is open. The side wall of the connector body is provided with an air inlet and a first exhaust port. The air inlet is adapted to allow combustion gas to enter the connector body, and the first exhaust port is adapted to allow combustion exhaust gas to be discharged. A welding tube is provided for inserting strip-shaped welding filler. The first end of the welding tube is open, and the second end of the welding tube is connected to the joint body. The second end of the joint body is adapted to output molten and softened welding filler.

[0006] A thermal welding conversion joint provided by the present invention further includes: A filter element is disposed at the air inlet, and the filter element is adapted to filter the combustion-supporting gas passing through the air inlet; A cleaning device is disposed on the outside of the connector body, and the cleaning device is adapted to clean the filter element.

[0007] According to the present invention, a thermal welding conversion joint is provided, wherein the filter element comprises: A filter screen is arranged around the outside of the connector body, and the filter screen covers the air inlet. The cleaning device includes: A cleaning component, including at least one of a scraping component and a roller brush component, wherein the cleaning component is movably disposed on the outside of the filter screen along the circumferential direction of the connector body, and the cleaning component contacts the outer surface of the filter screen; A drive mechanism is disposed on the connector body, the drive mechanism being adapted to drive the cleaning component to move relative to the filter screen.

[0008] According to a thermal welding conversion joint provided by the present invention, the driving mechanism includes: A rotating ring is rotatably disposed around the outside of the connector body relative to a fixed axis. The rotation axis of the rotating ring relative to the connector body coincides with the central axis of the connector body. The cleaning component is disposed on the rotating ring. The drive wheel can rotate relative to the connector body on a fixed axis, and the drive wheel is connected to the rotating ring in a transmission manner. A drive assembly is disposed on the connector body, the drive assembly being adapted to drive the drive wheel to rotate relative to the connector body.

[0009] According to a thermal welding conversion joint provided by the present invention, the axis of the driving wheel is parallel to the axis of the rotating ring, the outer surface of the driving wheel is in close contact with the outer surface of the rotating ring, and the driving wheel and the rotating ring are driven by friction. Alternatively, the driving wheel engages with the rotating ring for transmission.

[0010] According to a thermal welding conversion joint provided by the present invention, the driving assembly includes: A heat-conducting box is disposed on the outside of the connector body. The heat-conducting box is in thermal contact with the connector body. The heat-conducting box contains a working fluid. The top of the heat-conducting box has an air outlet, and the bottom of the heat-conducting box has a liquid inlet. A return pipe, the first end of which is connected to the air outlet, and the second end of which is connected to the liquid inlet; The impeller is rotatably mounted on the top of the heat-conducting box, and the impeller is coaxially fixed with the drive wheel.

[0011] According to a thermal energy welding conversion joint provided by the present invention, a working fluid cavity and a fan wheel cavity are formed in the heat conduction box, the liquid inlet is disposed on the bottom wall of the working fluid cavity, and the air outlet is disposed on the top wall of the fan wheel cavity; The bottom end of the impeller cavity is connected to the top end of the working fluid cavity. The flow cross-section of the working fluid cavity gradually decreases along the direction close to the impeller cavity. The top end of the working fluid cavity and the air outlet are both located on the side of the central axis of the impeller close to the connector body.

[0012] According to a thermal welding conversion joint provided by the present invention, the return pipe is arranged around the periphery of the joint body, and the return pipe has a detour section corresponding to the air inlet.

[0013] According to a thermal welding conversion joint provided by the present invention, the cross-sectional area of ​​the second end of the joint body is smaller than the cross-sectional area of ​​the first end of the joint body, and the second end of the joint body is provided with a molten material section, the inner cavity of the molten material section being in communication with the inner cavity of the joint body; The axis of the solder tube is set at an angle to the axis of the connector body. The second end of the solder tube is fixedly connected to the molten material part. The second end of the solder tube communicates with the inner cavity of the molten material part. The end face of the molten material part away from the connector body is set at an angle to the cross-section of the connector body.

[0014] The present invention also provides a thermal welding device, including the above-described thermal welding conversion joint.

[0015] The present invention provides a thermal welding conversion joint, comprising a joint body and a welding tube. The joint body has a cylindrical structure. The first end of the joint body is connected to the flame outlet pipe of a flame torch, allowing the flame stream output from the flame torch to enter the joint body. The second end of the joint body is open. The side wall of the joint body is provided with an air inlet and a first exhaust port. The air inlet allows combustion-supporting gas to enter the joint body, promoting combustion of the flame stream. The first exhaust port allows for timely discharge of fuel exhaust gas. The welding tube is located at the second end of the joint body, with its first end open for inserting a strip-shaped welding filler. The second end of the welding tube communicates with the joint body, allowing the strip-shaped welding filler inside the welding tube to extend into the joint body. Under the heating effect of the flame stream at the second end of the joint body, the welding filler gradually melts and softens, and the second end of the joint body outputs the molten and softened welding filler. The molten and softened welding filler enters the seam of the flooring fabric, and after cooling, the welding of the flooring fabric is completed. With this configuration, the thermal welding conversion connector provided by the present invention is connected to the flame gun, which enables the welding of the floor fabric using the heat energy of fuel combustion, eliminating the dependence on power supply and enabling the welding of the floor fabric even in scenarios without power supply.

[0016] Furthermore, the thermal welding equipment provided by the present invention also possesses the various advantages described above due to the presence of the thermal welding conversion joint as described above. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a front view of the thermal welding conversion joint provided by the present invention when connected to a flame torch.

[0019] Figure 2 This is a schematic diagram of the thermal welding conversion joint provided by the present invention connected to a flame torch, from one perspective.

[0020] Figure 3 This is a schematic diagram of the thermal welding conversion joint provided by the present invention connected to a flame torch, viewed from another perspective.

[0021] Figure 4 This is a partial structural schematic diagram of the heat conversion joint provided by the present invention (the solder tube, cone, and molten material section are not shown).

[0022] Figure 5 This is a structural schematic diagram of the filter and cleaning device provided by the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the driving component provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the drive mechanism provided by the present invention.

[0025] Figure 8 This is a cross-sectional view of the thermal welding conversion joint provided by the present invention (the solder tube, conical structure, and molten material section are not shown).

[0026] Figure label: 1. Connector body; 2. Flame gun; 3. Air inlet; 4. First exhaust port; 5. Melting section; 6. Welding tube; 7. Filter screen; 8. Scraper; 9. Roller brush; 10. Rotating ring; 11. Fixed ring; 12. Drive wheel; 13. Heat conduction box; 14. Return pipe; 15. Fan wheel; 16. Working fluid chamber; 17. Fan wheel chamber; 18. Detour section; 19. Heat insulation pad; 20. Fastener; 21. Exhaust pipe; 22. Second exhaust port. Detailed Implementation

[0027] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0028] The following is combined Figures 1 to 8 The present invention describes a thermal welding conversion joint. Figures 1 to 8 The mesh size of filter screen 7 is not shown in the image.

[0029] like Figures 1 to 8 As shown, the thermal welding conversion joint provided in this embodiment of the invention includes a joint body 1 and a welding tube 6.

[0030] Specifically, the connector body 1 has a cylindrical structure, with both ends of the connector body 1 being open. The first end of the connector body 1 is used to connect to the flame outlet pipe of the flame gun 2, so that the flame stream output from the flame gun 2 can enter the connector body 1. The second end of the connector body 1 is also open.

[0031] The side wall of the connector body 1 is provided with an air inlet 3 and a first exhaust port 4. The air inlet 3 is used to allow combustion-supporting gas to enter the connector body 1, and the combustion-supporting gas can promote the combustion of the flame flow after entering the connector body 1. The first exhaust port 4 is used to allow fuel exhaust gas to be discharged in a timely manner. The aforementioned combustion-supporting gas can be, but is not limited to, air or oxygen.

[0032] A welding tube 6 is located at the second end of the connector body 1. The first end of the welding tube 6 is open, allowing the strip-shaped welding filler to extend into it. The second end of the welding tube 6 is connected to the connector body 1, and the strip-shaped welding filler inside the welding tube 6 can be manually pushed into the connector body 1. The welding filler gradually melts and softens under the heating effect of the flame stream at the second end of the connector body 1, and the molten and softened welding filler is output from the second end of the connector body 1. The molten and softened welding filler enters the seam of the flooring fabric, and after cooling, the welding of the flooring fabric is completed.

[0033] With this configuration, the thermal welding conversion connector provided in this embodiment of the invention is connected to the flame gun 2 to form a novel floor cloth welding device. This device can utilize the heat energy of fuel combustion to weld the floor cloth, eliminating the dependence on power supply. It can also weld the floor cloth in scenarios without power supply.

[0034] It should be noted that after the welding filler cools, the welded area can be surface-treated to ensure aesthetics. The material of the welding filler needs to be determined based on the material of the flooring. When the flooring material is polyvinyl chloride (PVC), PVC welding rods can be used as the welding filler.

[0035] A threaded hole is provided on the side wall of the first end of the connector body 1, and a fastener 20 is provided at the threaded hole, which is threadedly connected to the connector body 1. When it is necessary to connect the thermal welding adapter to the flame torch 2, the first end of the connector body 1 is fitted onto the outside of the flame outlet pipe of the flame torch 2, and then the fastener 20 is tightened so that the end of the fastener 20 abuts against the flame outlet pipe, thereby connecting the connector body 1 to the flame torch 2. When it is necessary to remove the thermal welding adapter from the flame torch 2, the fastener 20 is tightened in the opposite direction so that the end of the fastener 20 is away from the flame outlet pipe, and the connector body 1 applies a force in a direction away from the flame torch 2, thereby removing the thermal welding adapter from the flame torch 2.

[0036] There are two air inlets 3, which are spaced apart circumferentially along the connector body 1, and each air inlet 3 extends circumferentially along the connector body 1. There are multiple sets of first exhaust holes 4, which are distributed circumferentially along the connector body 1, and each set of first exhaust holes 4 is spaced apart axially along the connector body 1.

[0037] In this embodiment of the invention, the cross-sectional area of ​​the second end of the connector body 1 is smaller than the cross-sectional area of ​​the first end of the connector body 1. (Refer to...) Figures 1 to 3 The portion of the connector body 1 near its second end is conical. This maintains the outlet pressure and flow rate at the second end of the connector body 1, ensuring complete combustion and improving the stability of the flame flow.

[0038] A molten material section 5 is provided at the second end of the connector body 1, and the inner cavity of the molten material section 5 is connected to the inner cavity of the connector body 1.

[0039] Specifically, the connector body 1 can be configured as a cylindrical part and a conical part, with the air inlet 3 and the first exhaust port 4 both located in the cylindrical part, and the welding tube and the molten material part 5 located in the conical part. The cylindrical part and the conical part are connected by a threaded pair.

[0040] The axis of the solder tube 6 is set at an angle to the axis of the connector body 1. The second end of the solder tube 6 is fixedly connected to the molten material section 5, and the second end of the solder tube 6 communicates with the inner cavity of the molten material section 5. The strip-shaped welding filler gradually enters the molten material section 5 under manual pushing. The flame stream of the connector body 1 causes the welding filler located in the molten material section 5 to be heated, melted, and softened.

[0041] The end face of the molten material section 5, away from the connector body 1, is set at an angle to the cross-section of the connector body 1, as shown in the reference. Figure 1 When operating the flame gun 2, the flame gun 2 can be tilted at a certain angle for easy operation.

[0042] Furthermore, the end face of the molten material section 5 away from the joint body 1 can be perpendicular to the axis of the welding tube 6. The moving direction of the strip welding filler in the welding tube 6 is consistent with the outflow direction of the molten and softened welding filler in the molten material section 5, which can make the molten and softened welding filler flow out more smoothly to the splice seam of the floor cloth.

[0043] In this embodiment of the invention, the thermal welding conversion joint also includes a filter and a cleaning device.

[0044] The filter element is installed at the air inlet 3. The filter element is used to filter the combustion gas passing through the air inlet 3, filter out the dust in the combustion gas, ensure the cleanliness of the combustion gas, and prevent external impurities from entering the joint body 1 and the molten and softened welding filler, thereby ensuring welding quality, improving the safety factor of floor cloth welding and extending the overall service life of the thermal welding equipment.

[0045] The cleaning device is located on the outside of the connector body 1. The cleaning device is used to clean the filter element to remove impurities trapped in the filter element, reduce the obstruction of the combustion-supporting gas entering the connector body 1, ensure smooth air intake at the air inlet 3, provide sufficient combustion-supporting gas, and ensure complete combustion.

[0046] The cleaning device enables the self-cleaning effect of the thermal welding conversion joint, avoiding manual cleaning and reducing labor intensity.

[0047] In this embodiment, the filter element includes a filter screen 7, which is annular and arranged around the outside of the connector body 1, and covers the air inlet 3.

[0048] The cleaning device includes a cleaning component and a drive mechanism. The cleaning component is disposed on the outside of the filter screen 7 and is movable circumferentially along the connector body 1. The drive mechanism is disposed on the connector body 1 and is used to drive the cleaning component to move relative to the filter screen 7.

[0049] The cleaning component contacts the outer surface of the filter screen 7. When the cleaning component moves relative to the filter screen 7, it can remove impurities from the outer surface of the filter screen 7.

[0050] Specifically, the cleaning components mentioned above include at least one of the scraper component 8 and the roller brush component 9.

[0051] The scraping component 8 includes scrapers, the edges of which contact the outer surface of the filter screen 7 to scrape away impurities. Specifically, the scraping component 8 includes a pair of angled scrapers with parallel axes, both parallel to the axis of the connector body 1. The adjacent edges of the pair of scrapers are connected together, while the distant edges of the pair of scrapers abut against the outer surface of the filter screen 7. When the scraping component 8 moves relative to the filter screen 7, both scrapers act simultaneously with the filter screen 7, improving the scraping effect on impurities.

[0052] The roller brush 9 includes a roller brush. The outer side of the roller brush contacts the outer side of the filter screen 7. While the roller brush moves relative to the filter screen 7, it also rotates around its own axis to brush the outer side of the filter screen 7, thereby removing impurities from the outer surface of the filter screen 7.

[0053] The working environment of roller brushes and scrapers is high-temperature, so high-temperature resistant materials must be selected.

[0054] In some embodiments, the scraping member 8 is provided only on the outer surface of the filter screen 7. In other embodiments, the roller brush member 9 is provided only on the outer surface of the filter screen 7. In still other embodiments, both the scraping member 8 and the roller brush member 9 are provided on the outer surface of the filter screen 7.

[0055] In this embodiment, the drive mechanism includes a rotating ring 10, a drive wheel 12, and a drive assembly.

[0056] The rotating ring 10 is located on the outer side of the connector body 1, and the rotating ring 10 can rotate relative to the connector body 1 on a fixed axis. The axis of rotation of the rotating ring 10 relative to the connector body 1 coincides with the central axis of the connector body 1. The scraping component 8 and the roller brush component 9 are both located on the rotating ring 10. When the rotating ring 10 rotates relative to the connector body 1, it can drive the scraping component 8 and the roller brush component 9 to move relative to the connector body 1 and the filter screen 7.

[0057] The drive wheel 12 can rotate relative to the connector body 1 on a fixed axis, and the drive wheel 12 is connected to the rotating ring 10 in a transmission connection. The drive assembly is disposed on the connector body 1, and the drive assembly is used to drive the drive wheel 12 to rotate relative to the connector body 1, thereby driving the rotating ring 10, the scraper 8 and the roller brush 9 to rotate relative to the connector body 1.

[0058] Specifically, the axis of the drive wheel 12 is parallel to the axis of the rotating ring 10, which allows the drive wheel 12 and the rotating ring 10 to be directly connected by transmission, avoiding the setting of intermediate transmission components, simplifying the structure, reducing the space occupied by the drive mechanism, and facilitating the lightweight design of the thermal welding conversion joint, making the thermal welding conversion joint more portable.

[0059] In a specific embodiment, the outer surface of the drive wheel 12 can be made to contact the outer surface of the rotating ring 10, so that the drive wheel 12 and the rotating ring 10 can be driven by friction. The transmission is achieved by the friction between the drive wheel 12 and the rotating ring 10.

[0060] Alternatively, toothed structures can be provided on the outer side of the driving wheel 12 and the outer side of the rotating ring 10, respectively, so that the driving wheel 12 and the rotating ring 10 mesh and transmit power. The transmission is achieved by utilizing the meshing force between the driving wheel 12 and the rotating ring 10.

[0061] When installing the rotating ring 10 onto the connector body 1, a fixing ring 11 can be provided on the connector body 1. The fixing ring 11 is fixedly connected to the connector body 1. The fixing ring 11 is provided with an annular groove, and the rotating ring 10 is disposed in the annular groove, so that the rotating ring 10 and the fixing ring 11 slide together. (Refer to...) Figure 7 The fixed ring 11 has a drive wheel cavity at the position corresponding to the drive wheel 12. The drive wheel cavity is connected to the annular groove. The drive wheel 12 is set in the drive wheel cavity and can be connected to the rotating ring 10 for transmission.

[0062] It should be noted that when setting the rotating ring 10 and the driving wheel 12, the friction between the rotating ring 10 and the fixed ring 11 and the driving wheel 12 and the fixed ring 11 should be minimized as much as possible, so as to reduce the rotational resistance of the rotating ring 10 and the driving wheel 12, improve the transmission efficiency, and reduce the driving force requirements of the drive components.

[0063] When connecting the filter screen 7 to the connector body 1, the filter screen 7 can also be connected to the retaining ring 11.

[0064] In this embodiment of the invention, the driving component includes a heat-conducting box 13, a return pipe 14, and a fan 15.

[0065] A heat-conducting box 13 is disposed on the outside of the joint body 1, and a working fluid is disposed inside the heat-conducting box 13. The heat-conducting box 13 is in thermal contact with the joint body 1. During the welding process, the flame stream passes through the joint body 1, heating the joint body 1. The joint body 1 reaches a high temperature and transfers heat to the heat-conducting box 13, thereby increasing the temperature of the heat-conducting box 13 and the working fluid. The working fluid is heated and vaporizes, transforming into a gaseous working fluid, which accumulates on the top of the heat-conducting box 13.

[0066] An air outlet is provided at the top of the heat-conducting box 13, and a liquid inlet is provided at the bottom. The first end of the return pipe 14 is connected to the air outlet, and the second end is connected to the liquid inlet. The gaseous working fluid at the top of the heat-conducting box 13 enters the return pipe 14 through the air outlet. The temperature of the return pipe 14 is relatively low; after entering the return pipe 14, the gaseous working fluid cools and liquefies, transforming into a liquid working fluid. The liquid working fluid flows back into the heat-conducting box 13 through the liquid inlet. This cycle continues, with the working fluid circulating between the heat-conducting box 13 and the return pipe 14, and the gaseous working fluid flowing orderly at the top of the heat-conducting box 13.

[0067] The impeller 15 is located on top of the heat-conducting box 13 and can rotate around a fixed axis. As the working gas flows orderly through the top of the heat-conducting box 13, it drives the impeller 15 to rotate. The impeller 15 is coaxially fixed with the drive wheel 12, thereby driving the drive wheel 12 to rotate and thus driving the rotating ring 10 and the cleaning component.

[0068] With this setup, when the drive component moves the cleaning part, it directly utilizes the heat energy of the flame flow during the welding process to convert the heat energy into kinetic energy, without using any electrical energy, which greatly improves the adaptability to power-free scenarios.

[0069] It should be noted that the top and bottom of the heat conduction box 13 refer to the state in which the heat energy welding conversion connector is installed on the flame torch 2, and the flame torch 2 is manually held so that the second end of the connector body 1 is aligned with the splice seam of the floor cloth. The upper end of the heat conduction box 13 is the top of the heat conduction box 13, and the lower end of the heat conduction box 13 is the bottom of the heat conduction box 13. The height of the air outlet is greater than the height of the liquid inlet.

[0070] The working medium mentioned above can be, but is not limited to, butane.

[0071] When the impeller 15 is rotatably connected to the heat transfer box 13, a sealing ring needs to be installed at the rotatable connection position to ensure the sealing of the heat transfer box 13, prevent leakage of the working fluid, and ensure that the working fluid can be effectively utilized.

[0072] In this embodiment, a working fluid cavity 16 and a fan wheel cavity 17 are formed inside the heat conduction box 13. The liquid inlet is located on the bottom wall of the working fluid cavity 16, and the air outlet is located on the top wall of the fan wheel cavity 17.

[0073] The bottom end of the impeller cavity 17 is connected to the top end of the working fluid cavity 16. The flow cross section of the working fluid cavity 16 gradually decreases along the direction close to the impeller cavity 17, which is beneficial to increase the pressure and flow velocity of the gaseous working fluid at the top of the working fluid cavity 16 and increase the driving force on the impeller 15.

[0074] In a specific embodiment, the cross-section of the connector body 1 is circular, and the external shape of the heat-conducting box 13 is irregular. (Refer to...) Figures 5 to 7 The heat-conducting box 13 is positioned on the lower side of the connector body 1. The surface of the heat-conducting box 13 that contacts the connector body 1 is cylindrical, designed for close contact with the connector body 1, thereby improving the heating uniformity of the working fluid inside the heat-conducting box 13. The remaining surfaces of the heat-conducting box 13 can be flat.

[0075] In some embodiments, a heat insulation pad 19 is also provided between the heat-conducting box 13 and the connector body 1 to avoid overheating of the working fluid, prevent all liquid working fluid in the heat-conducting box 13 from vaporizing, and ensure that the gas-liquid ratio of the working fluid is within a reasonable range.

[0076] The top of the working fluid chamber 16 and the air outlet are both located on the side of the central axis of the impeller 15 close to the connector body 1. When the gaseous working fluid flows through the impeller chamber 17, it can flow in an orderly manner and interact with the impeller 15 on the same side, causing the impeller 15 to rotate in a directional manner, thus avoiding the problem of the impeller 15 reversing due to the turbulent airflow in the impeller chamber 17.

[0077] In this embodiment of the invention, the return pipe 14 is arranged around the periphery of the connector body 1, and there is a certain distance between the return pipe 14 and the outer side of the connector body 1, so as to reduce the influence of the temperature of the connector body 1 on the return pipe 14 and ensure that the working fluid can be liquefied quickly in the return pipe 14.

[0078] The return pipe 14 has a detour section 18 to increase the flow path of the working fluid in the return pipe 14, increase the heat exchange area and heat exchange time, and ensure that the gaseous working fluid can be fully liquefied.

[0079] The detour section 18 corresponds to the air inlet 3. The combustion gas entering the air inlet 3 passes through the detour section 18 of the return pipe 14. The temperature of the combustion gas is relatively low, allowing for heat exchange with the detour section 18 of the return pipe 14. The gaseous medium in the detour section 18 decreases in temperature and liquefies, while the temperature of the combustion gas entering the air inlet 3 increases. This helps to reduce the temperature difference with the combustion temperature and improves combustion efficiency.

[0080] Each air intake 3 has a corresponding detour section 18, and each detour section 18 has multiple detour parts.

[0081] An exhaust pipe 21 is also provided on the connector body 1. The exhaust pipe 21 is arranged around the outside of the connector body 1 and corresponds to the position of the first exhaust hole 4 of the connector body 1. There is a gap between the inner sidewall of the exhaust pipe 21 and the outer sidewall of the connector body 1. The two ends of the exhaust pipe 21 are connected to the connector body 1 through sealing plates, so that an annular cavity is formed between the connector body 1 and the exhaust pipe 21. Multiple sets of second exhaust holes 22 are provided on the sidewall of the exhaust pipe 21. The multiple sets of second exhaust holes 22 are distributed around the circumference of the exhaust pipe 21, and each set of second exhaust holes 22 is spaced apart along the axial direction of the exhaust pipe 21.

[0082] Combustion exhaust gas inside the connector body 1 enters the exhaust stack 21 through the first exhaust port 4, and then exits through the second exhaust port 22. The first exhaust port 4 and the second exhaust port 22 are staggered to avoid the axis of the first exhaust port 4 coinciding with the axis of the second exhaust port 22. This increases the flow path of the combustion exhaust gas within the heat energy welding conversion connector, increases the heat exchange time between the exhaust stack 21 and the combustion exhaust gas, improves the heat recovery rate of the combustion exhaust gas, and is beneficial to increasing the temperature of the heat conduction box 13 and its internal working fluid.

[0083] On the other hand, embodiments of the present invention also provide a thermal welding device, including the thermal welding conversion connector provided in any of the above embodiments. The thermal welding conversion connector provided in any of the above embodiments can be connected to the flame torch 2. Therefore, the thermal welding device provided in this embodiment can utilize the combustion heat of fuel to weld flooring, eliminating the dependence of welding flooring on power supply and enabling welding of flooring in scenarios without power. The derivation process of the beneficial effects of the thermal welding device in the embodiments of the present invention is largely similar to the derivation process of the beneficial effects of the aforementioned thermal welding conversion connector, and therefore will not be repeated here.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermal welding conversion joint, characterized in that, include: The connector body (1) has a cylindrical structure. The first end of the connector body (1) is adapted to connect to the flame outlet pipe of the flame gun (2). The second end of the connector body (1) is open. The side wall of the connector body (1) is provided with an air inlet (3) and a first exhaust port (4). The air inlet (3) is adapted to allow combustion gas to enter the connector body (1), and the first exhaust port (4) is adapted to allow combustion exhaust gas to be discharged. A welding tube (6) is provided for inserting strip-shaped welding filler. The first end of the welding tube (6) is open, and the second end of the welding tube (6) is connected to the joint body (1). The second end of the joint body (1) is adapted to output molten and softened welding filler.

2. The thermal welding conversion joint according to claim 1, characterized in that, Also includes: A filter element is disposed at the air inlet (3), and the filter element is adapted to filter the combustion-supporting gas passing through the air inlet (3); A cleaning device is disposed outside the connector body (1), and the cleaning device is adapted to clean the filter element.

3. The thermal welding conversion joint according to claim 2, characterized in that, The filter element includes: A filter screen (7) is arranged around the outside of the connector body (1), and the filter screen (7) covers the air inlet (3). The cleaning device includes: The cleaning component includes at least one of a scraper (8) and a roller brush (9), the cleaning component being movably disposed on the outside of the filter screen (7) along the circumferential direction of the connector body (1), the cleaning component being in contact with the outer surface of the filter screen (7); A drive mechanism is provided on the connector body (1), the drive mechanism being adapted to drive the cleaning component to move relative to the filter screen (7).

4. The thermal welding conversion joint according to claim 3, characterized in that, The drive mechanism includes: A rotating ring (10) is rotatably disposed on the outside of the connector body (1) relative to the connector body (1). The rotation axis of the rotating ring (10) relative to the connector body (1) coincides with the central axis of the connector body (1). The cleaning component is disposed on the rotating ring (10). The drive wheel (12) can rotate relative to the connector body (1) on a fixed axis, and the drive wheel (12) is connected to the rotating ring (10) in a transmission connection; A drive assembly is disposed on the connector body (1), the drive assembly being adapted to drive the drive wheel (12) to rotate relative to the connector body (1).

5. The thermal welding conversion joint according to claim 4, characterized in that, The axis of the drive wheel (12) is parallel to the axis of the rotating ring (10), the outer surface of the drive wheel (12) is in close contact with the outer surface of the rotating ring (10), and the drive wheel (12) and the rotating ring (10) are driven by friction. Alternatively, the drive wheel (12) engages with the rotating ring (10) for transmission.

6. The thermal welding conversion joint according to claim 4, characterized in that, The driving component includes: A heat-conducting box (13) is disposed on the outside of the connector body (1). The heat-conducting box (13) is in thermal contact with the connector body (1). The heat-conducting box (13) contains a working fluid. The top of the heat-conducting box (13) has an air outlet, and the bottom of the heat-conducting box (13) has a liquid inlet. A return pipe (14) is provided, with its first end connected to the air outlet and its second end connected to the liquid inlet. The impeller (15) is rotatably mounted on the top of the heat-conducting box (13), and the impeller (15) is coaxially fixed with the drive wheel (12).

7. The thermal welding conversion joint according to claim 6, characterized in that, The heat-conducting box (13) has a working fluid cavity (16) and a fan wheel cavity (17) formed inside. The liquid inlet is located on the bottom wall of the working fluid cavity (16), and the air outlet is located on the top wall of the fan wheel cavity (17). The bottom end of the impeller cavity (17) is connected to the top end of the working fluid cavity (16). The flow cross section of the working fluid cavity (16) gradually decreases along the direction close to the impeller cavity (17). The top end of the working fluid cavity (16) and the air outlet are both located on the side of the central axis of the impeller (15) close to the connector body (1).

8. The thermal welding conversion joint according to claim 6, characterized in that, The return pipe (14) is arranged around the periphery of the connector body (1), and the return pipe (14) has a detour section (18) corresponding to the air inlet (3).

9. The thermal welding conversion joint according to any one of claims 1-8, characterized in that, The cross-sectional area of ​​the second end of the connector body (1) is smaller than the cross-sectional area of ​​the first end of the connector body (1). The second end of the connector body (1) is provided with a melting part (5), and the inner cavity of the melting part (5) is connected to the inner cavity of the connector body (1). The axis of the solder tube (6) is set at an angle to the axis of the connector body (1). The second end of the solder tube (6) is fixedly connected to the melting part (5). The second end of the solder tube (6) is connected to the inner cavity of the melting part (5). The end face of the melting part (5) away from the connector body (1) is set at an angle to the cross-section of the connector body (1).

10. A thermal welding device, characterized in that, Includes the thermal welding conversion joint as described in any one of claims 1 to 9.

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