Vacuumizing device of vacuum welding furnace

Abstract

The utility model relates to the technical field of vacuum welding furnaces, and discloses a vacuumizing device of a vacuum welding furnace, which comprises a vacuum pump and a machine body connecting pipe, the air inlet end of the vacuum pump is communicated with a pump body connecting pipe, and the machine body connecting pipe is communicated with the pump body connecting pipe through a buffer connector. The end, away from the buffer connector, of the machine body connecting pipe communicates with the air outlet end of the vacuum welding machine body, the elastic silica gel ring and the fixing cylinder are connected together through the outer mounting ring, and then the pump body connecting pipe and the machine body connecting pipe are connected together; therefore, the sufficient sealing effect can be achieved, vibration generated during working of the vacuum pump is transmitted to the elastic silica gel ring and the inner mounting ring from the pump body connecting pipe and then transmitted to the elastic metal strip, the vibration is buffered and absorbed through deformation of the elastic silica gel ring and the elastic metal strip, and then the vibration is prevented from being transmitted to the machine body connecting pipe.

Description

Technical Field

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

[0002] Vacuum welding furnaces can perform high-quality welding on products in a vacuum environment. During the heating or cooling process, a reducing system is introduced to protect the product and solder from oxidation. At the same time, it reacts the oxides on the surface of the product and solder, improving the surface quality of the weld and reducing the void rate. The vacuum pumping device that comes with the vacuum welding furnace is usually composed of a vacuum pump, pipelines and valves. However, the vacuum pump will generate vibration when it is working. This vibration will be transmitted to the vacuum welding furnace along the pipeline, which can easily cause the connection between the vacuum welding furnace and the pipeline to loosen. Utility Model Content

[0003] The purpose of this invention is to provide a vacuum pumping device for a vacuum welding furnace to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a vacuum pumping device for a vacuum welding furnace, comprising a vacuum pump and a body connecting pipe, wherein the inlet end of the vacuum pump is connected to the pump body connecting pipe, the body connecting pipe is connected to the pump body connecting pipe through a buffer connector, and the end of the body connecting pipe away from the buffer connector is connected to the outlet end of the vacuum welding machine body.

[0005] The buffer connector includes a fixed cylinder and an inner mounting ring. The bottom end of the fixed cylinder is fixedly connected to the machine body connecting pipe, and the interior of the fixed cylinder is in communication with the interior of the machine body connecting pipe. An outer mounting ring is fixedly installed on the inner wall of the fixed cylinder, and an elastic silicone ring is fixedly installed inside the outer mounting ring. The inner mounting ring and the elastic silicone ring are fixedly sleeved on the outer wall of the pump body connecting pipe. There are two inner mounting rings, located above and below the elastic silicone ring, respectively. The outer wall of the inner mounting ring and the inner wall of the outer mounting ring are connected by an elastic metal strip.

[0006] Furthermore, the body connecting pipe is connected to the air outlet of the vacuum welding body via a detachable connector, and a valve is provided at the connection point between the body connecting pipe and the detachable connector.

[0007] Furthermore, the vacuum welding machine body is fixedly installed on the top of the base plate, the base plate has a through groove, and a mounting seat is slidably arranged in the through groove. A shock-absorbing pad is fixedly installed at the bottom of the mounting seat, and the bottom support leg of the vacuum pump is fixedly connected to the top of the mounting seat.

[0008] Furthermore, the elastic metal strip on the inner mounting ring is provided in two layers, with a gap between the elastic metal strip and the elastic silicone ring, and a gap between the elastic metal strip and the inner wall of the fixed cylinder.

[0009] Furthermore, a pipe support frame is fixedly installed on the top of the base plate by screws, and the pipe support frame is slidably sleeved on the machine body connecting pipe.

[0010] Furthermore, an elastic support pad is fixedly installed on the top of the base plate, the upper surface of the elastic support pad rests against the lower surface of the vacuum pump, and a reinforcing ring is provided at the connection between the vacuum pump and the base plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The elastic silicone ring is connected to the fixed cylinder by the outer mounting ring, which in turn connects the pump body connecting pipe to the machine body connecting pipe. Since the outer mounting ring is fixedly connected to the inner wall of the fixed cylinder, it can achieve a sufficient sealing effect. The vibration generated by the vacuum pump is transmitted from the pump body connecting pipe to the elastic silicone ring and the inner mounting ring, and then to the elastic metal strip. The elastic silicone ring and the elastic metal strip are used to buffer and absorb the vibration by deformation, thus preventing the vibration from being transmitted to the machine body connecting pipe. The stronger recovery deformation ability of the elastic metal strip can prevent the elastic silicone ring from being over-deformed, which would cause the connection between the elastic silicone ring and the pump body connecting pipe to loosen. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure when the present invention is connected to the vacuum welding machine body;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model;

[0015] Figure 3 This is a structural schematic diagram of the vacuum pump, mounting base, and shock-absorbing pad of this utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional view of the buffer connector of this utility model;

[0017] Figure 5 This is a schematic diagram of the exploded view of the buffer connector of this utility model.

[0018] In the diagram: 1. Vacuum welding machine body; 2. Vacuum pump; 3. Pump body connecting pipe; 4. Buffer connector; 401. Fixed cylinder; 402. Outer mounting ring; 403. Elastic silicone ring; 404. Inner mounting ring; 405. Elastic metal strip; 5. Machine body connecting pipe; 6. Base plate; 7. Mounting seat; 8. Shock-absorbing pad; 9. Elastic support pad; 10. Reinforcing ring; 11. Pipe support frame; 12. Valve; 13. Detachable joint. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1-5 This utility model provides a technical solution: a vacuum pumping device for a vacuum welding furnace, including a vacuum pump 2 and a body connecting pipe 5. The air inlet end of the vacuum pump 2 is connected to the pump body connecting pipe 3. The body connecting pipe 5 is connected to the pump body connecting pipe 3 through a buffer connector 4. The end of the body connecting pipe 5 away from the buffer connector 4 is connected to the air outlet end of the vacuum welding machine body 1.

[0021] The buffer connector 4 includes a fixed cylinder 401 and an inner mounting ring 404. The bottom end of the fixed cylinder 401 is fixedly connected to the machine body connecting pipe 5, and the interior of the fixed cylinder 401 communicates with the interior of the machine body connecting pipe 5. An outer mounting ring 402 is fixedly installed on the inner wall of the fixed cylinder 401, and an elastic silicone ring 403 is fixedly installed inside the outer mounting ring 402. The inner mounting ring 404 and the elastic silicone ring 403 are fixedly sleeved on the outer wall of the pump body connecting pipe 3. There are two inner mounting rings 404, located above and below the elastic silicone ring 403, respectively. The outer wall of the inner mounting ring 404 is connected to the inner wall of the outer mounting ring 402 by an elastic metal strip 405. The elastic silicone ring 403 is connected to the fixed cylinder 401 by the outer mounting ring 402. The pump body connecting pipe 3 and the machine body connecting pipe 5 are connected together. Since the outer mounting ring 402 is fixedly connected to the inner wall of the fixed cylinder 401, it can achieve a sufficient sealing effect. The vibration generated by the operation of the vacuum pump 2 is transmitted from the pump body connecting pipe 3 to the elastic silicone ring 403 and the inner mounting ring 404, and then to the elastic metal strip 405. The elastic silicone ring 403 and the elastic metal strip 405 are used to buffer and absorb the vibration by deformation, thereby preventing the vibration from being transmitted to the machine body connecting pipe 5. The elastic metal strip 405 has a stronger ability to recover deformation, which can prevent the elastic silicone ring 403 from being over-deformed, thus preventing the elastic silicone ring 403 from becoming loose at the fixed connection between the elastic silicone ring 403 and the pump body connecting pipe 3.

[0022] The machine body connecting pipe 5 is connected to the air outlet of the vacuum welding machine body 1 by a detachable connector 13, and a valve 12 is provided at the connection point of the machine body connecting pipe 5 and the detachable connector 13. The detachable connector 13 allows the machine body connecting pipe 5 to be detached from the vacuum welding machine body 1, and the valve 12 is used to open and close the pipeline channel.

[0023] The vacuum welding machine body 1 is fixedly installed on the top of the base plate 6. The base plate 6 has a through groove, and a mounting seat 7 is slidably installed in the through groove. A shock-absorbing pad 8 is fixedly installed on the bottom of the mounting seat 7. The bottom support leg of the vacuum pump 2 is fixedly connected to the top of the mounting seat 7. The mounting seat 7 is set to connect the shock-absorbing pad 8 and the vacuum pump 2, so that the vibration generated by the operation of the vacuum pump 2 is absorbed at the shock-absorbing pad 8, thereby avoiding the collision between the vacuum pump 2 and the base plate 6.

[0024] The elastic metal strip 405 on the inner mounting ring 404 is provided with two layers, forming a double constraint, which can further prevent excessive deformation of the elastic silicone ring 403. There is a gap between the elastic metal strip 405 and the elastic silicone ring 403, and a gap between the elastic metal strip 405 and the inner wall of the fixed cylinder 401 to prevent the elastic metal strip 405 from rubbing against the inner wall of the fixed cylinder 401 and the outer wall of the elastic silicone ring 403 when it deforms.

[0025] A pipe support frame 11 is fixedly installed on the top of the base plate 6 by screws. The pipe support frame 11 is slidably sleeved on the machine body connecting pipe 5. The pipe support frame 11 is set to support the machine body connecting pipe 5, further reducing the radial force at the connection between the machine body connecting pipe 5 and the valve 12, thereby preventing the machine body connecting pipe 5 from loosening under the action of gravity.

[0026] An elastic support pad 9 is fixedly installed on the top of the base plate 6. The upper surface of the elastic support pad 9 rests on the lower surface of the vacuum pump 2, increasing the support for the vacuum pump 2. A reinforcing ring 10 is provided at the connection between the vacuum pump 2 and the base plate 6 to strengthen the connection between the vacuum pump 2 and the mounting base 7, thereby preventing the part from loosening under vibration.

[0027] Working principle: When vacuuming is required, vacuum pump 2 is turned on to remove air from the pump body connecting pipe 3, thereby removing air from the fixed cylinder 401, which in turn removes air from the machine body connecting pipe 5, creating a negative pressure state inside the machine body connecting pipe 5. This removes air from the welding chamber inside the vacuum welding machine body 1 until the set vacuum level is reached. After stopping vacuum pump 2, valve 12 is closed, and the workpiece inside the welding chamber can then be welded. The vibration generated by vacuum pump 2 during operation is transmitted from the pump body connecting pipe 3 to the elastic silicone ring 403 and the inner mounting ring 404, and then to the elastic metal strip 405. The deformation of the elastic silicone ring 403 and the elastic metal strip 405 buffers and absorbs the vibration, thus preventing the vibration from being transmitted to the machine body connecting pipe 5.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A vacuum extraction device of a vacuum welding furnace, comprising a vacuum pump (2), a machine body connecting pipe (5), characterized in that: The vacuum pump (2) has a pump body connecting pipe (3) connected to its inlet end. The machine body connecting pipe (5) is connected to the pump body connecting pipe (3) through a buffer connector (4). The end of the machine body connecting pipe (5) away from the buffer connector (4) is connected to the outlet end of the vacuum welding machine body (1). The buffer connector (4) includes a fixed cylinder (401) and an inner mounting ring (404). The bottom end of the fixed cylinder (401) is fixedly connected to the machine body connecting pipe (5), and the interior of the fixed cylinder (401) is connected to the interior of the machine body connecting pipe (5). An outer mounting ring (402) is fixedly installed on the inner wall of the fixed cylinder (401). An elastic silicone ring (403) is fixedly installed inside the outer mounting ring (402). The inner mounting ring (404) and the elastic silicone ring (403) are fixedly sleeved on the outer wall of the pump body connecting pipe (3). There are two inner mounting rings (404), which are located above and below the elastic silicone ring (403) respectively. The outer wall of the inner mounting ring (404) and the inner wall of the outer mounting ring (402) are connected by an elastic metal strip (405).

2. A vacuum extraction device for a vacuum brazing furnace according to claim 1, characterized in that: The body connecting pipe (5) is connected to the air outlet of the vacuum welding body (1) via a detachable connector (13), and a valve (12) is provided at the connection point between the body connecting pipe (5) and the detachable connector (13).

3. A vacuum pumping device for a vacuum brazing furnace according to claim 1, characterized in that: The vacuum welding machine body (1) is fixedly installed on the top of the base plate (6). The base plate (6) has a through groove, and a mounting seat (7) is slidably installed in the through groove. A shock-absorbing pad (8) is fixedly installed at the bottom of the mounting seat (7). The bottom support leg of the vacuum pump (2) is fixedly connected to the top of the mounting seat (7).

4. A vacuum pumping device for a vacuum brazing furnace according to claim 1, characterized in that: The elastic metal strip (405) on the inner mounting ring (404) is provided with upper and lower layers. There is a gap between the elastic metal strip (405) and the elastic silicone ring (403), and there is a gap between the elastic metal strip (405) and the inner wall of the fixed cylinder (401).

5. A vacuum extraction device for a vacuum brazing furnace according to claim 3, characterized in that: The top of the base plate (6) is fixedly installed with a pipe support frame (11) by screws, and the pipe support frame (11) is slidably sleeved on the body connecting pipe (5).

6. A vacuum pumping device for a vacuum brazing furnace according to claim 3, characterized in that: An elastic support pad (9) is fixedly installed on the top of the base plate (6). The upper surface of the elastic support pad (9) rests on the lower surface of the vacuum pump (2). A reinforcing ring (10) is provided at the connection between the vacuum pump (2) and the base plate (6).

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