Soldering flux recovery device of welding furnace

Abstract

The utility model relates to a soldering flux recovery device for a welding furnace, which belongs to the technical field of condensing equipment and comprises a recovery tank, an air inlet is arranged at the upper end of one side of the recovery tank, an air outlet is arranged at the lower end of the other side of the recovery tank, a condensing component is arranged in the recovery tank, and a collecting pipe is arranged at the bottom of the recovery tank. The vacuum pump has the effects of reducing damage to the vacuum pump and prolonging the service life of the vacuum pump.

Description

Technical Field

[0001] This application relates to the field of condensation equipment, and in particular to a flux recovery device for welding furnaces. Background Technology

[0002] Reflow soldering technology is widely used in the electronics manufacturing industry. Components on various circuit boards of electronic devices are soldered to the circuit boards through the reflow soldering process. This equipment has an internal heating circuit that heats air or nitrogen to a sufficiently high temperature to melt the solder on both sides of the component and bond it to the motherboard with flux.

[0003] After reflow soldering, the air or nitrogen is drawn away by the vacuum pump. However, the air or nitrogen at this time has been mixed with flux. The flux is drawn into the vacuum pump along with the air and nitrogen. Over time, the flux accumulates and corrodes the vacuum pump, affecting its service life. Utility Model Content

[0004] In order to reduce damage to vacuum pumps and extend their service life, this application provides a welding furnace flux recovery device.

[0005] The welding furnace flux recovery device provided in this application adopts the following technical solution:

[0006] A welding furnace flux recovery device includes a recovery tank, an air inlet at the upper end of one side of the recovery tank, an air outlet at the lower end of the other side of the recovery tank, a condensation component inside the recovery tank, and a collection pipe at the bottom of the recovery tank.

[0007] By adopting the above technical solution, the collection pipe is closed, and the gas containing flux enters the recovery tank from the inlet and flows out from the outlet. At the same time, the condensation component condenses the flux in the recovery tank, causing the flux to condense into liquid and concentrate at the bottom of the recovery tank. After the gas condensation is complete, the collection pipe is opened, allowing the liquid flux in the recovery tank to flow out along the collection pipe. This separates the flux from the gas supplied to the vacuum pump, thereby reducing damage to the vacuum pump and extending its service life.

[0008] Optionally, the condensation assembly includes a condenser tube disposed inside the recovery tank, one end of which runs vertically from top to bottom to the bottom of the recovery tank, and the other end spirals upward and extends out from the top of the recovery tank.

[0009] By adopting the above technical solution, the condensate flows vertically downward along the condenser pipe to the bottom of the recovery tank and then spirals upward. As the liquid with flux flows towards the gas outlet, its temperature gradually decreases, thereby improving the condensation effect.

[0010] Optionally, the spiral winding portion of the condenser tube can be configured to have the shape of multiple gourds connected together.

[0011] By adopting the above technical solution, the area of ​​the condenser tube on the horizontal projection is increased, allowing gas from different regions to pass between the condenser tubes and come into contact with them, thereby further improving the condensation effect.

[0012] Optionally, the condenser is configured as a corrugated pipe, and the recovery tank is provided with a support for supporting the condenser.

[0013] By adopting the above technical solution, the support component fixes the position of the condenser tube, and the structure of the corrugated tube increases the contact area between the condenser tube and the gas, thereby improving the condensation effect.

[0014] Optionally, the support includes a support plate adapted to the shape of the spiral portion of the condenser tube. The horizontal cross section of the support plate is cross-shaped. One end of the support plate is fixedly connected to the top of the recovery tank, and the other end is provided with a connecting plate, which is fixedly connected to the lower end of the recovery tank. The support plate is provided with multiple positioning grooves, and the condenser tube is inserted into the positioning grooves.

[0015] By adopting the above technical solution, the structure of the support plate can stably support the condenser tube, which is supported in the positioning groove, thereby maintaining its shape.

[0016] Optionally, the connecting plate has multiple through holes, which are connected to the collecting pipe.

[0017] By adopting the above technical solution, the through hole allows the condensed liquid on the condenser tube to pass through the connecting plate and thus reach the inside of the collection tube.

[0018] Optionally, the recycling tank includes a tank body and a tank cover. The tank cover is fixed to the tank body by bolts, and both ends of the condenser pipe pass through the tank cover. The top of the support plate is also fixedly connected to the tank cover by bolts.

[0019] By adopting the above technical solution, the tank cover and the tank body are fixed by bolts, which allows the tank cover to be removed, thereby enabling the internal maintenance and cleaning of the tank body and maintaining the recycling effect of the device.

[0020] Optionally, a solenoid valve is installed on the collection pipe, and a collection tank is connected to the collection pipe.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] The coiled structure of the condenser tube can increase the area of ​​the condenser tube on the horizontal projection, allowing gas from different regions to pass between the condenser tubes and come into contact with the condenser tubes, further improving the condensation effect, thereby enabling the flux to be effectively separated from the gas.

[0023] The detachable structure of the can lid and the can body allows them to be separated, enabling internal maintenance and cleaning of the can body and maintaining the recycling efficiency of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the condensation assembly according to an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the support plate according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Recovery tank; 11. Tank body; 12. Tank cover; 13. Air inlet; 14. Air outlet; 15. Collection pipe; 2. Condensation assembly; 21. Condensation pipe; 22. Support plate; 221. Positioning groove; 23. Connecting plate; 231. Through hole. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] This application discloses a welding furnace flux recovery device. (Refer to...) Figure 1 and Figure 2 A welding furnace flux recovery device includes a recovery tank 1, which includes a tank body 11 and a tank cover 12. The tank cover 12 is fixed to the tank body 11 by bolts. The tank cover 12 and the tank body 11 are fixed by bolts so that the tank cover 12 can be removed, thereby enabling maintenance and cleaning of the inside of the tank body 11.

[0030] An air inlet 13 is installed on the upper side of one side of the tank body 11 for the gas to flow into the welding furnace. An air outlet 14 is installed on the lower side of the other side of the tank body 11 for connecting to a vacuum pump. A condensation component 2 is provided inside the recovery tank 1, and a collection pipe 15 is provided at the bottom of the recovery tank 1. A solenoid valve is installed on the collection pipe 15, and a collection tank is connected to the collection pipe 15.

[0031] When recovering flux from the gas, the solenoid valve closes the collection pipe 15, and the gas containing flux enters the recovery tank 1 through the inlet 13 and flows out through the outlet 14. At this time, the condensation component 2 condenses the flux in the recovery tank 1, causing the flux to condense into liquid and concentrate at the bottom of the recovery tank 1. Clean gas enters the vacuum pump through the outlet 14. After no more gas enters the recovery tank 1, the solenoid valve is opened. The collection pipe 15 is connected to the inside of the recovery tank 1, allowing the liquid flux in the recovery tank 1 to flow out along the collection pipe 15 and into the collection tank. This separates the flux from the gas flowing to the vacuum pump and collects the recovered flux.

[0032] The condensation assembly 2 includes a condenser tube 21 disposed inside the recovery tank 1. One end of the condenser tube 21 passes through the tank cover 12 from top to bottom and descends vertically to the bottom of the recovery tank 1. It then spirals upwards at the bottom of the recovery tank 1 and exits through the tank cover 12 to the outside of the recovery tank 1. The condenser tube 21 is corrugated to increase the contact area between the condenser tube 21 and the gas. The condensate flows vertically downwards along the condenser tube 21 to the bottom of the recovery tank 1 and then spirals upwards. As the liquid carrying flux flows towards the gas outlet 14, its temperature gradually decreases, causing the flux to condense at the lower end inside the recovery tank 1.

[0033] The area of ​​the horizontal projection of the spiral coiled part of the condenser tube 21 gradually decreases from top to bottom and then expands. This process is repeated multiple times, and the resulting shape is set as a shape of multiple gourds connected together. This allows gas from different areas to pass through between the condenser tubes 21, thereby increasing the amount of gas in contact with the condenser tubes 21 and enabling the flux to condense effectively.

[0034] Reference Figure 2 and Figure 3 To improve the stability of the condenser tube 21, a support component is provided inside the recovery tank 1 to support the condenser tube 21. The support component includes a support plate 22 that matches the shape of the spiral part of the condenser tube 21. The horizontal cross section of the support plate 22 is cross-shaped. One end of the support plate 22 is fixedly connected to the tank cover 12 of the recovery tank 1 by bolts, and the other end abuts against a connecting plate 23. The connecting plate 23 is fixedly connected to the lower end of the tank body 11. The support plate 22 has multiple positioning grooves 221, and the condenser tube 21 is inserted into the positioning grooves 221. The connecting plate 23 has multiple through holes 231, which communicate with the collection pipe 15.

[0035] The structure of the support plate 22 can stably support the condenser tube 21. The condenser tube 21 is supported in the positioning groove 221, thereby maintaining its shape. The through hole 231 allows the condensed liquid on the condenser tube 21 to pass through the connecting plate 23 and reach the collection tube 15.

[0036] The implementation principle of the welding furnace flux recovery device in this application embodiment is as follows: gas enters the tank 11 through the gas inlet 13, passes through the condenser pipe 21, and is discharged at the gas outlet 14. The flux in the gas condenses on the condenser pipe 21 and drips to the bottom of the tank 11. After the gas is discharged, the collection pipe 15 is opened to discharge the flux inside the tank 11.

[0037] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flux recovery device for a welding furnace, characterized in that: The system includes a recycling tank (1), with an air inlet (13) at the upper end of one side and an air outlet (14) at the lower end of the other side. The recycling tank (1) is equipped with a condensation assembly (2) and a collection pipe (15) at the bottom.

2. The flux recovery device for a welding furnace according to claim 1, characterized in that: The condensation assembly (2) includes a condenser tube (21) disposed inside the recovery tank (1). One end of the condenser tube (21) is vertically arranged from top to bottom until it reaches the bottom of the recovery tank (1), and the other end is spirally coiled upward and extends out from the top of the recovery tank (1).

3. The flux recovery device for a welding furnace according to claim 2, characterized in that: The spiral coiled portion of the condenser tube (21) is shaped like a series of gourds connected together.

4. The flux recovery device for a welding furnace according to claim 3, characterized in that: The condenser tube (21) is configured as a corrugated tube, and the recovery tank (1) is provided with a support for supporting the condenser tube (21).

5. The flux recovery device for a welding furnace according to claim 4, characterized in that: The support includes a support plate (22) adapted to the shape of the spiral part of the condenser tube (21). The horizontal cross section of the support plate (22) is cross-shaped. One end of the support plate (22) is fixedly connected to the top of the recovery tank (1), and the other end is provided with a connecting plate (23). The connecting plate (23) is fixedly connected to the lower end of the recovery tank (1). Multiple positioning grooves (221) are opened on the support plate (22), and the condenser tube (21) is inserted into the positioning groove (221).

6. The flux recovery device for a welding furnace according to claim 5, characterized in that: The connecting plate (23) has multiple through holes (231) that are connected to the collecting pipe (15).

7. The flux recovery device for a welding furnace according to claim 5, characterized in that: The recycling tank (1) includes a tank body (11) and a tank cover (12). The tank cover (12) is fixed to the tank body (11) by bolts, and both ends of the condenser pipe (21) pass through the tank cover (12). The top of the support plate (22) is also fixedly connected to the tank cover (12) by bolts.

8. A welding furnace flux recovery device according to claim 6, characterized in that: A solenoid valve is installed on the collection pipe (15), and a collection tank is connected to the collection pipe (15).

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