Welding protective gas buffer tank

Abstract

The utility model provides a welding protective gas buffer tank which comprises a tank body, a sealing cover connected with the tank body in a buckled mode and a support fixed to the bottom of the tank body, a telescopic filtering assembly is detachably installed on the inner side wall of the sealing cover, a check ring is fixed in the tank body, one end of the telescopic filtering assembly is attached to the check ring, and the other end of the telescopic filtering assembly is attached to the support. A gas inlet pipe is further arranged in the center of the sealing cover, the output end of the gas inlet pipe directly faces the inner side of the telescopic filtering assembly, a plurality of gas outlet pipes are arranged at the top of the tank body, gas buffering assemblies are arranged in the gas outlet pipes, the input direction of welding protection gas directly faces the center of the telescopic filtering assembly, and the movable column is slidably installed in an inner cavity of the fixed column. The bottom of the movable column is connected with the bottom wall of the fixed column through a spring, the filter plate is fixed to the tail end of the movable column to form a telescopic filter layer, when the gas pressure is high, the movable column is pressed to compress the spring, the filter plate moves inwards, the sealing performance is ensured, impurities are intercepted by gas through micropores of the filter plate, and the gas enters the tank body after being purified.

Description

Technical Field

[0001] This utility model relates to the field of buffer tanks, and in particular to a welding protective gas buffer tank. Background Technology

[0002] Traditional welding processes mostly use argon or CO2 gas as the shielding gas alone, while buffer tanks are mainly used to store the shielding gas. Buffer tanks are mainly used in various systems to buffer pressure fluctuations and make the system work more smoothly. The buffering performance of the buffer tank is mainly achieved by compressing the compressed air inside the tank. There are two types of buffer tanks: diaphragm buffer tanks and airbag buffer tanks.

[0003] Existing buffer tanks filter impurities in the gas by using filters.

[0004] Therefore, it is necessary to provide a new welding protective gas buffer tank to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a welding protective gas buffer tank to solve the technical problem of not being able to completely filter impurities in the gas. This allows the gas to pass through the micropores of the filter plate to intercept impurities, and then enter the tank after purification, thereby improving the cleanliness of the gas.

[0006] To solve the above-mentioned technical problems, this utility model provides a welding protective gas buffer tank, including a tank body, a sealing cover that is fastened to the tank body, and a support fixed to the bottom of the tank body. A telescopic filter assembly is detachably installed on the inner side wall of the sealing cover. A retaining ring is fixed inside the tank body, and one end of the telescopic filter assembly is in contact with the retaining ring. An air inlet pipe is also provided at the center of the sealing cover, and the output end of the air inlet pipe faces the inner side of the telescopic filter assembly. Multiple air outlet pipes are provided at the top of the tank body, and each of the multiple air outlet pipes is equipped with a gas buffer assembly.

[0007] Furthermore, the telescopic filter assembly includes a filter plate, multiple fixed columns and multiple movable columns. One end of each of the multiple fixed columns is fixedly connected to a connecting plate. The multiple connecting plates are detachably installed to the inner side of the sealing cover by bolts. One end of each of the multiple movable columns is slidably installed in the inner cavity of the multiple fixed columns, and the other end of the multiple movable columns is fixedly connected to the edge of the filter plate.

[0008] Furthermore, the fixed column is also provided with a spring inside, and the two ends of the spring are respectively fixedly connected to one end of the movable column and the bottom wall of the fixed column.

[0009] Furthermore, the gas buffer assembly includes a buffer plate hinged to the inner wall of the gas outlet pipe, and the inner side wall of the buffer plate is also provided with a compression spring, the two ends of which are fixedly connected to the inner side wall of the gas outlet pipe and the inner side wall of the buffer plate, respectively.

[0010] Furthermore, an intake valve and a pressure gauge are respectively provided on the outer surface of the intake pipe.

[0011] Furthermore, the outer surface of the vent pipe is provided with an vent valve, a pressure reducing valve, a flow meter, and an vent nozzle from bottom to top.

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

[0013] 1. In specific implementation, the welding protective gas input direction is directly facing the center of the telescopic filter assembly. The fixed column is connected to the sealing cover by bolts through the connecting plate. The movable column is slidably installed in the inner cavity of the fixed column. The bottom is connected to the bottom wall of the fixed column by a spring. The filter plate is fixed at the end of the movable column to form a telescopic filter layer. When the gas pressure is high, the movable column is compressed by the spring, and the filter plate moves inward to ensure sealing. The gas intercepts impurities through the micropores of the filter plate and enters the tank after purification.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the overall structure of the welding protective gas buffer tank provided by this utility model;

[0017] Figure 2 A cross-sectional structural schematic diagram of the welding protective gas buffer tank provided by this utility model;

[0018] Figure 3 for Figure 2 The enlarged structural diagram at point A is shown below;

[0019] Figure 4 for Figure 2 The enlarged structural diagram at point B is shown below;

[0020] Figure 5A schematic diagram of the sealing cap and telescopic filter assembly provided by this utility model.

[0021] In the picture:

[0022] 1. Tank body; 2. Sealing cover; 3. Support; 4. Retaining ring; 5. Inlet pipe; 6. Outlet pipe; 7. Filter plate; 8. Fixed column; 9. Movable column; 10. Spring; 11. Buffer plate; 12. Compression spring; 13. Inlet valve; 14. Pressure gauge; 15. Outlet valve; 16. Pressure reducing valve; 17. Flow meter; 18. Outlet nozzle; 19. Connecting plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example:

[0025] like Figures 1 to 5 As shown, a welding protective gas buffer tank includes a tank body 1, a sealing cover 2 that is fastened to the tank body 1, and a support 3 fixed to the bottom of the tank body 1. A telescopic filter assembly is detachably installed on the inner wall of the sealing cover 2. A retaining ring 4 is fixed inside the tank body 1, and one end of the telescopic filter assembly is in contact with the retaining ring 4. The retaining ring 4 is fixed to the inner wall of the tank body 1 to provide bottom support for the telescopic filter assembly and prevent it from being excessively pressed down, which would cause the seal to fail. An air inlet pipe 5 is also provided at the center of the sealing cover 2. An air inlet valve 13 and a pressure gauge 14 are respectively provided on the outer surface of the air inlet pipe 5, and the output end of the air inlet pipe 5 faces the inner side of the telescopic filter assembly. Multiple air outlet pipes 6 are provided at the top of the tank body 1, and each of the multiple air outlet pipes 6 is equipped with a gas buffer assembly. An air outlet valve 15, a pressure reducing valve 16, a flow meter 17, and an air outlet nozzle 18 are respectively provided on the outer surface of the air outlet pipe 6 from bottom to top.

[0026] In a specific implementation process, refer to Figure 2 , Figure 3 as well as Figure 5 The telescopic filter assembly includes a filter plate 7, multiple fixed columns 8 and multiple movable columns 9. One end of each of the multiple fixed columns 8 is fixedly connected to a connecting plate 19. The multiple connecting plates 19 are detachably installed to the inside of the sealing cover 2 by bolts. One end of each of the multiple movable columns 9 is slidably installed in the inner cavity of the multiple fixed columns 8, and the other end of each of the multiple movable columns 9 is fixedly connected to the edge of the filter plate 7. The fixed column 8 is also provided with a spring 10. The two ends of the spring 10 are fixedly connected to one end of the movable column 9 and the bottom wall of the fixed column 8, respectively.

[0027] In a specific implementation process, refer to Figure 4 As shown, the gas buffer assembly includes a buffer plate 11 hinged to the inner wall of the gas outlet pipe 6. The inner side wall of the buffer plate 11 is also provided with a compression spring 12. The two ends of the compression spring 12 are fixedly connected to the inner side wall of the gas outlet pipe 6 and the inner side wall of the buffer plate 11, respectively. The buffer plate 11 is located between the gas outlet valve 15 and the pressure reducing valve 16.

[0028] When gas passes through the outlet valve 15, it first passes through the buffer plate 11. When the pressure fluctuates, the buffer plate 11 absorbs the energy of the airflow pulsation through the hinge structure and the elastic deformation of the compression spring 12, and then enters the pressure reducing valve 16. For example, if the pressure inside the tank suddenly increases, the buffer plate 11 deflects inward and compresses the compression spring 12 to slow down the airflow speed; when the pressure decreases, the compression spring 12 pushes the buffer plate 11 to reset, maintaining the continuity of airflow. The buffer plate 11 is set between the outlet valve 15 and the pressure reducing valve 16 to ensure that the pressure reducing valve 16 always works under a stable pressure, avoiding failures caused by high pressure pulsation, which is especially suitable for high-precision welding.

[0029] The working principle of this utility model is as follows: Protective gas (such as argon, carbon dioxide, etc.) enters the tank 1 through the inlet pipe 5, with the gas direction facing the center of the telescopic filter assembly. The fixed column 8 is bolted to the sealing cover 2 through the connecting plate 19. The movable column 9 is slidably installed in the inner cavity of the fixed column 8, and its bottom is connected to the bottom wall of the fixed column 8 through the spring 10. The filter plate 7 is fixed at the end of the movable column 9 to form a telescopic filter layer. When the gas pressure is high, the movable column 9 is compressed by the spring 10, and the filter plate 7 moves inward to ensure sealing. The gas intercepts impurities through the micropores of the filter plate 7 and enters the interior of the tank 1 after purification.

[0030] All the devices selected in this application are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A buffer tank for welding protective gas, comprising a tank body (1), a sealing cover (2) connected with the tank body (1) by screwing, and a support (3) fixed to the bottom of the tank body (1), characterized in that, The inner wall of the sealing cover (2) is detachably equipped with a telescopic filter assembly. A retaining ring (4) is fixed inside the tank body (1), and one end of the telescopic filter assembly is in contact with the retaining ring (4). An air inlet pipe (5) is also provided at the center of the sealing cover (2), and the output end of the air inlet pipe (5) faces the inside of the telescopic filter assembly. Multiple air outlet pipes (6) are provided at the top of the tank body (1), and a gas buffer assembly is provided in each of the multiple air outlet pipes (6).

2. The welding shielding gas buffer tank according to claim 1, characterized in that, The telescopic filter assembly includes a filter plate (7), multiple fixed columns (8) and multiple movable columns (9). One end of each of the multiple fixed columns (8) is fixedly connected to a connecting plate (19). The multiple connecting plates (19) are detachably installed to the inner side of the sealing cover (2) by bolts. One end of each of the multiple movable columns (9) is slidably installed in the inner cavity of the multiple fixed columns (8), and the other end of the multiple movable columns (9) is fixedly connected to the edge of the filter plate (7).

3. The welding shielding gas buffer tank of claim 2, wherein, The fixed column (8) is also provided with a spring (10) inside, and the two ends of the spring (10) are fixedly connected to one end of the movable column (9) and the bottom wall of the fixed column (8), respectively.

4. The welding shielding gas buffer tank of claim 3, wherein, The gas buffer assembly includes a buffer plate (11) hinged to the inner wall of the gas outlet pipe (6). The inner side wall of the buffer plate (11) is also provided with a compression spring (12). The two ends of the compression spring (12) are fixedly connected to the inner side wall of the gas outlet pipe (6) and the inner side wall of the buffer plate (11), respectively.

5. The welding shielding gas buffer tank of claim 4, wherein, The outer surface of the air intake pipe (5) is provided with an air intake valve (13) and a pressure gauge (14).

6. The welding shielding gas buffer tank of claim 5, wherein, The outer surface of the air outlet pipe (6) is provided with an air outlet valve (15), a pressure reducing valve (16), a flow meter (17), and an air outlet nozzle (18) from bottom to top.

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