Vacuum brazing furnace

Abstract

The utility model relates to the technical field of vacuum brazing furnaces, and discloses a vacuum brazing furnace which comprises a machine base, a control cabinet is fixedly installed on the top of the machine base and located on the left side of a brazing furnace body, and a vacuumizing box is fixedly installed on the top of the machine base and located on the right side of the brazing furnace body. A vacuum pump is fixedly installed in the bottom of the vacuumizing box, a filtering chamber is arranged in the top of the vacuumizing box, an air inlet pipe is communicated between the brazing furnace body and the filtering chamber, a filtering assembly is arranged in the vacuumizing box and located on the right side of the filtering chamber, and an air exhaust pipe is communicated between an air exhaust opening of the vacuum pump and the right end of the filtering assembly. An air outlet of the vacuum pump is internally connected with an exhaust pipe; gas exhausted into the filtering chamber can be preliminarily filtered through the filtering plate, then the gas is sequentially filtered in a graded mode through the three sets of filtering pieces, and finally the gas is exhausted outwards from the exhaust pipe, so that the situation that a filter element is blocked due to the fact that the gas contains impurities can be avoided as much as possible, and the service life of the filter element can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of vacuum brazing furnace technology, specifically a vacuum brazing furnace. Background Technology

[0002] Vacuum brazing is a brazing process performed in a vacuum environment. It involves placing the welding materials in a vacuum, where the high-temperature liquid metal reacts with the material surface to achieve a bond. The vacuum environment effectively eliminates oxygen and water from the air, preventing oxidation and corrosion during the brazing process, thus ensuring the quality and stability of the weld.

[0003] The furnace body structure of a high-temperature vacuum brazing furnace disclosed in Chinese Patent Publication No. CN220902106U relates to the field of vacuum brazing furnaces. It includes an upper furnace shell positioned above a lower furnace shell, two sets of first sealing strips, and two sets of second sealing strips. A connecting hinge connects the lower and upper furnace shells. Lower connecting plates are fixedly connected to the outer sides of the lower furnace shell near both edges, and upper connecting plates are fixedly connected to the outer sides of the upper furnace shell near both edges. A sealing door plate is rotatably installed on the side of the upper furnace shell away from the connecting hinges. The two sets of first sealing strips are fixedly connected to both ends of the lower furnace shell, and the two sets of second sealing strips are fixedly connected to both ends of the upper furnace shell. The advantages of this utility model are: it allows for the assembly and installation of the furnace body structure while ensuring furnace body sealing; it also reduces the difficulty of maintenance of the internal structure of the furnace body, thereby improving maintenance efficiency; and it enables switching between static and dynamic states of the furnace body structure, making it convenient to use.

[0004] In the process of realizing this application, the inventors discovered at least the following problems with the technology: Although the above technical solution can ensure the sealing of the furnace body while assembling and installing the furnace structure, reducing the difficulty of maintenance, in actual use, due to the rapid high-temperature heating of brazing, dust and other particles inside the brazing furnace will scatter and fly around. Therefore, they will enter the vacuum pump along the pipes during vacuuming, which will cause the filter element inside the vacuum pump to be blocked, affecting the normal processing efficiency. Therefore, further improvements can be made. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides the following technical solution: a vacuum brazing furnace, comprising a base, a brazing furnace body fixedly mounted on the top of the base, a control cabinet fixedly mounted on the top of the base and on the left side of the brazing furnace body, a vacuum chamber fixedly mounted on the top of the base and on the right side of the brazing furnace body, a vacuum pump fixedly mounted inside the bottom of the vacuum chamber, a filter chamber provided in the top of the vacuum chamber, an air inlet pipe connecting the brazing furnace body and the filter chamber, a filter assembly provided inside the vacuum chamber and on the right side of the filter chamber, an air extraction pipe connecting the air extraction port of the vacuum pump and the right end of the filter assembly, and an exhaust pipe connected to the air outlet of the vacuum pump.

[0006] As an optimization, the filter assembly includes a filter tube fixedly installed inside the top of the vacuum chamber, with the left end of the filter tube leading into the filter chamber. A filter plate is fixedly installed inside the left end of the filter tube, and the filter plate has several filter grooves inside. The filter tube has three slots equidistantly arranged inside, and filter elements are installed in the slots.

[0007] As an optimization, a groove is formed on the inner wall of the lower half of the filter tube and at the corresponding slot, and the filter element is embedded in the groove.

[0008] As an optimization, a cover is fixedly installed on the left side of the filter plate corresponding to the filter groove, and the top of the lower cover is located inside the bottom of the upper cover. Through the overlapping and staggered covers, dust can be prevented from penetrating the filter groove as much as possible, thereby improving the filtration effect.

[0009] As an optimization, the filter element includes an outer frame inserted into a slot, a filter screen is provided inside the outer frame, a panel is fixedly installed on the top of the outer frame, a sealing plate is fixedly installed on the top side of the panel, and a sealing plate is fixedly installed at the top center of the sealing plate.

[0010] As an optimization, the lower half of the outer frame is embedded in a groove, and the panel is embedded in a slot.

[0011] As an optimization, the vacuum box is provided with a sliding groove at the corresponding sealing plate, and the sealing plate is slidably inserted into the sliding groove.

[0012] The beneficial effects of this utility model are:

[0013] 1. This vacuum brazing furnace uses a filter plate to initially filter the gas entering the filter chamber, and then it passes through three sets of filter elements for graded filtration before finally being discharged from the exhaust pipe. This process minimizes the risk of filter element blockage due to impurities in the gas, thereby extending the service life of the filter element.

[0014] 2. In this vacuum brazing furnace, the sealing plate can be pulled upward by pulling the handle, making it easy to remove the filter screen for cleaning or replacement. Then, the cleaned or newly replaced filter screen is inserted downward into the slot, so that the lower half of the outer frame is embedded in the groove, making the panel tightly embedded in the slot, thus completing the installation. The sealing plate will also be inserted into the sliding groove to further improve the sealing performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the vacuum chamber of this utility model;

[0017] Figure 3 This is a schematic diagram of the filter tube structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the filter element structure of this utility model.

[0019] In the diagram: 1. Base; 2. Brazing furnace body; 3. Control cabinet; 4. Vacuum chamber; 5. Vacuum pump; 6. Inlet pipe; 7. Filter assembly; 8. Extraction pipe; 9. Exhaust pipe; 10. Filter tube; 11. Filter plate; 12. Slot; 13. Embedded groove; 14. Cover; 15. Outer frame; 16. Filter screen; 17. Panel; 18. Sealing plate; 19. Handle. Detailed Implementation

[0020] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1A vacuum brazing furnace includes a base 1, a brazing furnace body 2 fixedly installed on the top of the base 1, a control cabinet 3 fixedly installed on the top of the base 1 and on the left side of the brazing furnace body 2, a vacuum box 4 fixedly installed on the top of the base 1 and on the right side of the brazing furnace body 2, a vacuum pump 5 fixedly installed in the bottom of the vacuum box 4, a filter chamber provided in the top of the vacuum box 4, an air inlet pipe 6 connecting the brazing furnace body 2 and the filter chamber, a filter assembly 7 provided inside the vacuum box 4 and on the right side of the filter chamber, an air extraction pipe 8 connecting the air extraction port of the vacuum pump 5 and the right end of the filter assembly 7, and an exhaust pipe 9 connected to the air outlet of the vacuum pump 5.

[0023] Please see Figure 2-3 The filter assembly 7 includes a filter tube 10 fixedly installed inside the top of the vacuum chamber 4, with the left end of the filter tube 10 leading into the filter chamber. A filter plate 11 is fixedly installed inside the left end of the filter tube 10. Several filter grooves are opened inside the filter plate 11. Three slots 12 are equally spaced inside the filter tube 10. Filter elements are installed in the slots 12. The gas entering the filter chamber is initially filtered through the filter plate 11, and larger particles of impurities are filtered out and left in the filter chamber. The gas will then be filtered through the three sets of filter elements in sequence to further prevent clogging.

[0024] Please see Figure 2-3 A groove 13 is opened on the inner wall of the lower half of the filter tube 10 and at the corresponding slot 12, and the filter element is embedded in the groove 13. A cover 14 is fixedly installed on the left side of the filter plate 11 corresponding to the filter groove, and the top of the lower cover 14 is located inside the bottom of the upper cover 14. Through the overlapping and staggered covers 14, dust can be prevented from penetrating the filter groove as much as possible, thus improving the filtration effect.

[0025] Please see Figure 3-4 The filter element includes an outer frame 15 inserted into a slot 12, the lower half of the outer frame 15 being embedded in a groove 13, a filter screen 16 inside the outer frame 15, a panel 17 fixedly installed on the top of the outer frame 15 and embedded in the slot 12, a sealing plate 18 fixedly installed on the top side of the panel 17, and a sealing plate 18 fixedly installed at the top center of the sealing plate 18. A sliding groove is provided in the vacuum box 4 corresponding to the sealing plate 18, and the sealing plate 18 is slidably inserted into the sliding groove. The sealing plate 18 can be pulled upward by pulling the handle 19, thereby facilitating the removal of the filter screen 16 for cleaning or replacement.

[0026] When in use, the vacuum pump 5 is started first to evacuate the furnace. The gas discharged into the filter chamber through the inlet pipe 6 will be initially filtered by the filter plate 11, and then filtered in stages by three sets of filter elements. Finally, it will be discharged out from the exhaust pipe 9, which can minimize the risk of the vacuum pump 5 being blocked due to impurities in the gas.

[0027] After prolonged use, the filter element may become clogged, affecting the filtration effect. At this time, the sealing plate 18 can be pulled upward by pulling the handle 19, making it easy to remove the filter screen 16 for cleaning or replacement. Then, the cleaned or newly replaced filter screen 16 is inserted downward into the slot 12, so that the lower half of the outer frame 15 is embedded in the groove 13, and the insert plate 17 is tightly embedded in the slot 12, thus completing the installation. The sealing plate 18 will be inserted into the sliding groove to further improve the sealing performance.

[0028] In summary, this vacuum brazing furnace uses filter plate 11 to initially filter the gas entering the filter chamber, then uses three sets of filter elements for graded filtration, and finally discharges the gas from the exhaust pipe 9. This minimizes the risk of filter element blockage due to impurities in the gas, thereby extending the service life of the filter element.

[0029] By pulling the handle 19, the sealing plate 18 can be pulled upwards, making it easy to remove the filter screen 16 for cleaning or replacement. Then, the cleaned or newly replaced filter screen 16 is inserted downwards into the slot 12, so that the lower half of the outer frame 15 is embedded in the groove 13, and the insert plate 17 is tightly embedded in the slot 12, thus completing the installation. The sealing plate 18 will be inserted into the slide groove, further improving the sealing performance.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0032] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A vacuum brazing furnace, comprising a base (1), characterized in that: A brazing furnace body (2) is fixedly installed on the top of the base (1). A control cabinet (3) is fixedly installed on the top of the base (1) and on the left side of the brazing furnace body (2). A vacuum box (4) is fixedly installed on the top of the base (1) and on the right side of the brazing furnace body (2). A vacuum pump (5) is fixedly installed in the bottom of the vacuum box (4). A filter chamber is provided in the top of the vacuum box (4). An air inlet pipe (6) is connected between the brazing furnace body (2) and the filter chamber. A filter assembly (7) is provided inside the vacuum box (4) and on the right side of the filter chamber. An air extraction pipe (8) is connected between the air extraction port of the vacuum pump (5) and the right end of the filter assembly (7). An exhaust pipe (9) is connected to the air outlet of the vacuum pump (5). The filter assembly (7) includes a filter tube (10) fixedly installed in the top of the vacuum chamber (4), and the left end of the filter tube (10) leads into the filter chamber. A filter plate (11) is fixedly installed in the left end of the filter tube (10). Several filter grooves are opened inside the filter plate (11). Three slots (12) are equally spaced inside the filter tube (10). Filter elements are provided in the slots (12). The filter element includes an outer frame (15) inserted into a slot (12), a filter screen (16) is provided inside the outer frame (15), a panel (17) is fixedly installed on the top of the outer frame (15), a sealing plate (18) is fixedly installed on the top side of the panel (17), and a sealing plate (18) is fixedly installed at the top center of the sealing plate (18).

2. The vacuum brazing furnace according to claim 1, characterized in that: The filter tube (10) has a groove (13) on the inner wall of the lower half and at the corresponding slot (12), and the filter element is embedded in the groove (13).

3. The vacuum brazing furnace according to claim 1, characterized in that: A cover (14) is fixedly installed on the left side of the filter plate (11) corresponding to the filter groove, and the top of the lower cover (14) is located inside the bottom of the upper cover (14).

4. The vacuum brazing furnace according to claim 1, characterized in that: The lower half of the outer frame (15) is embedded in the groove (13), and the panel (17) is embedded in the slot (12).

5. The vacuum brazing furnace according to claim 1, characterized in that: The vacuum box (4) has a groove at the corresponding sealing plate (18), and the sealing plate (18) is slidably inserted into the groove.

Images