Semi-closed anaerobic multifunctional welding operation table

Abstract

The utility model relates to a semi-closed oxygen-free multifunctional welding operation table which comprises a smoke exhaust pipe assembly, a smoke collecting cover, a smoke exhaust bent pipe, a smoke exhaust pipe, a leakage hole, a spraying head, a welding isolation cover, a glass window welding operation window, a glass window, an operation table base, a welding platform, a sodium bicarbonate powder storage assembly, a rotating plate, a sodium bicarbonate powder storage tank and a workpiece loading and unloading door. The welding platform is fixedly installed on the upper portion of the operation table base through a support, the welding isolation hood covers the welding platform on the operation table base, a window is formed in the front portion of the welding isolation hood, a glass window is installed on the window, two glass window welding operation windows are arranged on the glass window, and the smoke exhaust pipe assembly is connected to the upper portion of the welding isolation hood. A rectangular through hole is formed in the side edge of the welding isolation cover, and a turnover sodium bicarbonate powder storage assembly is installed through a vertical rotating shaft. According to the oxygen-free welding isolation hood, the oxygen-free state during welding can be effectively ensured, and the welding quality can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment, specifically a semi-enclosed oxygen-free multi-functional welding operating table. Background Technology

[0002] The main purpose of welding in an oxygen-free environment is to prevent oxidation and deliquescence of the metal during the welding process, thereby improving weld quality and sealing. An oxygen-free environment effectively avoids contact between the metal and oxygen during welding, reducing oxidation reactions and ensuring the quality and strength of the weld.

[0003] Hydraulic pipe components used in underground coal mines are numerous and bear high pressure, requiring high welding quality to ensure their service life meets design requirements and equipment safety. Therefore, the welding process should be carried out in an oxygen-free environment whenever possible. However, current welding workbenches are all open-type workbenches. During the welding process, the molten metal easily combines with oxygen in the air, causing oxides to form at the weld and affecting the welding quality.

[0004] Currently, a utility model patent with publication number CN201792084U discloses a vertical circumferential seam welding machine, which relates to a vertical circumferential seam welding machine for non-oxidizing welding of thin-walled stainless steel tee sockets. This welding machine includes a worktable, a drive unit, and a welding torch. It also includes a rotating mechanism that rotates the product to be processed in conjunction with the welding torch. The rotating mechanism includes a spindle and a drive unit. The worktable has a spindle mounting hole, which mates with the spindle. The lower end of the spindle is connected to the drive unit, and the upper end of the spindle has a fixing shaft for fixing the product to be processed. The spindle has a through hole for transmitting protective gas, and the fixing shaft has a gas hole that communicates with the through hole in the spindle. The welding torch is fixed to the worktable via a welding torch holder. This utility model simplifies the product clamping process, improves welding efficiency and quality, achieves non-oxidizing results on both the inside and outside of the welded pipe, and significantly reduces the labor intensity of workers and shortens the welding time.

[0005] As can be seen from the above-disclosed technical content, as existing technology, the utility model with announcement number CN201792084U can be used specifically for non-oxidative welding of the socket of thin-walled stainless steel pipe fittings, especially thin-walled stainless steel tees, through various structures. However, it is not well compatible with various hydraulic pipe fittings used in underground coal mines, and its use has certain limitations. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a semi-enclosed oxygen-free multifunctional welding workbench, which can effectively ensure an oxygen-free state during welding and effectively improve welding quality.

[0007] To achieve the above objectives, this utility model discloses a semi-enclosed oxygen-free multifunctional welding operating table, comprising an exhaust pipe assembly, a fume collection hood, an exhaust bend, an exhaust pipe, a leak hole, a spray head, a welding isolation cover, a glass welding operation window, a glass window, an operating table base, a welding platform, a sodium bicarbonate powder storage assembly, a rotating plate, a sodium bicarbonate powder storage tank, and a workpiece loading and unloading door. The welding platform is fixedly mounted on the upper part of the operating table base via a bracket. The welding isolation cover covers the welding platform on the operating table base. A window with a glass window is opened at the front of the welding isolation cover, and two glass welding operation windows are provided on the glass window. The exhaust pipe assembly is connected to the upper part of the welding isolation cover. A rectangular through hole is opened on the side of the welding isolation cover, and a flip-up sodium bicarbonate powder storage assembly is installed through a vertical rotating shaft. An openable workpiece loading and unloading door is installed at the rear of the welding isolation cover.

[0008] In addition, the semi-enclosed oxygen-free multifunctional welding workbench proposed in the above embodiments of this utility model may also have the following additional technical features:

[0009] As a further improvement of this utility model, the exhaust pipe assembly includes a flue gas collection hood, an exhaust pipe bend, an exhaust pipe, a leak hole, and a spray head. The lower part of the flue gas collection hood is connected to a welded isolation hood, and the upper part of the flue gas collection hood is connected to the side of the exhaust pipe through the exhaust pipe bend. A leak hole is opened at the lower end of the exhaust pipe, and a spray head is provided on the upper inner side of the exhaust pipe.

[0010] As a further improvement of this utility model, the sodium bicarbonate powder storage assembly includes a rotating plate and a sodium bicarbonate powder storage tank. The rotating plate is installed in a rectangular through hole on the side of the welding isolation cover via a vertical rotating shaft. The sodium bicarbonate powder storage tank is fixedly installed on the lower surface of the rotating plate. A windproof curtain is provided in the rectangular through hole on the side of the welding isolation cover.

[0011] As a further improvement of this utility model, a lighting lamp is installed inside the welding isolation cover.

[0012] As a further improvement of this utility model, the glass window welding operation window is equipped with a rubber curtain.

[0013] As a further improvement of this utility model, the sodium bicarbonate powder storage tank is a semi-circular groove.

[0014] By means of the above solution, this utility model has at least the following advantages: Compared with conventional welding workbenches, by adding a welding isolation cover that can isolate external airflow to the base of the workbench, and then by sprinkling an appropriate amount of sodium bicarbonate powder on the welding platform, the sodium bicarbonate powder is heated by the heat generated during welding, and the heat released during welding continuously heats the sodium bicarbonate to decompose carbon dioxide gas, so that the welding platform forms a relatively stable carbon dioxide gas environment, which meets the quality requirements of the welded workpiece, can effectively ensure an oxygen-free state during welding, and can effectively improve the welding quality. Attached Figure Description

[0015] Figure 1 This is a front-view 3D schematic diagram of a semi-enclosed oxygen-free multi-functional welding workbench;

[0016] Figure 2 This is a rear-view 3D schematic diagram of a semi-enclosed oxygen-free multi-functional welding workbench.

[0017] Figure 3 This is a 3D view of the base of a semi-enclosed, oxygen-free, multi-functional welding workbench.

[0018] Figure 4 This is a 3D view of a sodium bicarbonate powder storage component for a semi-enclosed, oxygen-free, multi-functional welding workbench.

[0019] Figure 5 This is a structural diagram of the exhaust pipe assembly of a semi-enclosed oxygen-free multi-functional welding workbench;

[0020] In the diagram: 1. Exhaust pipe assembly; 1-1. Smoke collection hood; 1-2. Exhaust bend; 1-3. Exhaust pipe; 1-4. Leakage hole; 1-5. Spray head; 2. Welding isolation cover; 3. Glass window welding operation window; 4. Glass window; 5. Operating platform base; 5-1. Welding platform; 6. Sodium bicarbonate powder storage assembly; 6-1. Rotary plate; 6-2. Sodium bicarbonate powder storage tank; 7. Workpiece loading and unloading door. Detailed Implementation

[0021] The semi-enclosed oxygen-free multifunctional welding workbench of this utility model is described below with reference to the accompanying drawings.

[0022] In Embodiment 1 of this application, as Figures 1 to 3As shown, this semi-enclosed oxygen-free multifunctional welding workbench (hereinafter referred to as "the present invention") includes a fume extraction pipe assembly 1, a fume collection hood 1-1, a fume extraction bend 1-2, a fume extraction pipe 1-3, a leakage hole 1-4, a spray head 1-5, and a workpiece loading and unloading door 7. A welding platform 5-1 is fixedly mounted on the upper part of the workbench base 5 via a bracket. A welding isolation cover 2 covers the welding platform 5-1 on the workbench base 5. A window 4 is opened at the front of the welding isolation cover 2, and two glass welding operation windows are installed on the glass window 4. 3. The upper part of the welding isolation cover 2 is connected to the exhaust pipe assembly 1; a rectangular through hole is opened on the side of the welding isolation cover 2 and a flip-up sodium bicarbonate powder storage assembly 6 is installed through a vertical rotating shaft. The sodium bicarbonate powder storage assembly 6 is only transferred into the welding isolation cover 2 when sodium bicarbonate powder is needed. After use, it can be transferred out of the welding isolation cover 2 to prevent high temperature and welding slag from affecting the sodium bicarbonate powder in the sodium bicarbonate powder storage assembly 6, making it more convenient to use sodium bicarbonate powder; an openable workpiece loading and unloading door 7 is installed at the rear of the welding isolation cover 2.

[0023] The vertical circumferential welder with utility model announcement number CN201792084U (hereinafter referred to as "the patent") can be used specifically for the non-oxidative welding of thin-walled stainless steel pipe fittings, especially the socket of thin-walled stainless steel tees, through various structures. However, it is not well compatible with various hydraulic pipe fittings used in underground coal mines, which limits its use. In contrast, the present invention uses manual welding, although the degree of automation is reduced, it can perform oxygen-free welding of various specifications of hydraulic pipe fittings used in underground coal mines. The overall structure of the equipment is simple, easy to operate, and has extremely low operating costs.

[0024] This second embodiment is basically the same in structure as the first embodiment, the difference being that, as Figure 4 and Figure 5 As shown, the exhaust pipe assembly 1 includes a flue gas collection hood 1-1, an exhaust pipe bend 1-2, an exhaust pipe 1-3, a leakage hole 1-4, and a spray head 1-5. The lower part of the flue gas collection hood 1-1 is connected to the welding isolation cover 2, and the upper part of the flue gas collection hood 1-1 is connected to the side of the exhaust pipe 1-3 through the exhaust pipe bend 1-2. A leakage hole 1-4 is opened at the lower end of the exhaust pipe 1-3, and a spray head 1-5 is provided on the upper inner side of the exhaust pipe 1-3. The sodium bicarbonate powder storage assembly 6 includes a rotating plate 6-1 and a sodium bicarbonate powder storage tank 6-2. The rotating plate 6-1 is installed in a rectangular through hole on the side of the welding isolation cover 2 through a vertical rotation shaft. The sodium bicarbonate powder storage tank 6-2 is fixedly installed on the lower surface of the rotating plate 6-1, and a windproof curtain is provided in the rectangular through hole on the side of the welding isolation cover 2.

[0025] To further optimize the working efficiency of this application and allow workers to better observe the workpiece status during welding, a lighting lamp is installed inside the welding isolation cover 2. To minimize the interference of external airflow on the internal welding environment, the glass welding operation window 3 is equipped with a rubber curtain. To allow the sodium bicarbonate powder storage tank 6-2 to enter or exit the welding isolation cover 2 along with the rotating plate 6-1, the sodium bicarbonate powder storage tank 6-2 is a semi-circular groove.

[0026] To use, simply install the semi-enclosed oxygen-free multi-functional welding workbench and connect the corresponding pipelines and equipment.

[0027] When this utility model is used, its specific operation is as follows:

[0028] In operation, the operator first loads sodium bicarbonate powder into the sodium bicarbonate powder storage tank 6-2 of the sodium bicarbonate powder storage assembly 6. The operator then manually rotates the rotating plate 6-1 of the sodium bicarbonate powder storage assembly 6, causing the storage tank 6-2 to rotate into the welding isolation cover 2. Next, an appropriate amount of sodium bicarbonate powder is evenly sprinkled onto the welding platform 5-1 using a spoon. Then, the workpiece loading / unloading door 7 is opened, and the workpiece to be welded is placed on the welding platform 5-1. The workpiece loading / unloading door 7 is then closed, and welding can begin. During welding, the high temperature of the welding torch heats the sodium bicarbonate powder. Sodium bicarbonate is an acidic salt formed by the neutralization of a strong base and a weak acid. After decomposition, sodium carbonate remains. It is stable at room temperature but easily decomposes when heated, gradually decomposing above 50℃ and completely losing carbon dioxide at 270℃. Its chemical equation is as follows.

[0029] 2NaHCO3=△=Na2CO3+H2O+CO2↑

[0030] The carbon dioxide produced during decomposition fills the welding isolation cover 2, making the internal environment oxygen-free, thereby ensuring that the welding platform 5-1 forms a relatively stable carbon dioxide gas environment to meet the quality requirements of the welded workpiece.

[0031] During welding, high-temperature fumes rise from the operating platform base 5 at the bottom of the welding isolation hood 2, pass through the fume collection hood 1-1 and the exhaust bend 1-2, and enter the exhaust pipe 1-3. Due to the upward movement within the exhaust pipe 1-3, the welding fumes continue to rise, and after being sprayed and cleaned by the spray nozzles 1-5 at the top of the exhaust pipe 1-3, they are released into the atmosphere, reducing the pollution of the work area by welding fumes. Wastewater is discharged into the drainage ditch through the leakage hole 1-4. During operation, workers can enter the welding isolation hood 2 through the glass welding operation window 3 with both hands, observe the workpiece through the glass window 4, and perform welding. The diameter of both glass welding operation windows 3 is no less than 45 centimeters to facilitate welding operations.

[0032] In summary, the semi-enclosed oxygen-free multifunctional welding workbench of this utility model, by adding a welding isolation cover 2 that can isolate external airflow to the workbench base 5, and then by sprinkling an appropriate amount of sodium bicarbonate powder on the welding platform 5-1, the sodium bicarbonate powder is heated by the heat generated during welding. The heat released during welding continuously heats the sodium bicarbonate, causing it to decompose into carbon dioxide gas, thus creating a relatively stable carbon dioxide gas environment on the welding platform 5-1. This meets the quality requirements of the welded workpiece, effectively ensures an oxygen-free state during welding, and effectively improves the welding quality.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A semi-enclosed oxygen-free multifunctional welding operation platform, comprising an operation platform base (5) and a welding platform (5-1), characterized in that, The upper part of the operating platform base (5) is fixedly installed by a support and welded with a welding platform (5-1), the welding isolation cover (2) covers the welding platform (5-1) on the operating platform base (5), a window is formed in the front part of the welding isolation cover (2) and a glass window (4) is installed, two glass window welding operation windows (3) are arranged on the glass window (4), and the upper part of the welding isolation cover (2) is connected with a smoke exhaust pipe assembly (1); a rectangular through hole is formed in the side edge of the welding isolation cover (2) and a turnable sodium bicarbonate powder storage assembly (6) is installed through a vertical rotating shaft; and a workpiece loading and unloading door (7) is installed at the rear part of the welding isolation cover (2).

2. The semi-enclosed oxygen-free multi-functional welding station according to claim 1, characterized in that, The smoke exhaust pipe assembly (1) comprises a smoke collection cover (1-1), a smoke exhaust elbow (1-2), a smoke exhaust pipe (1-3), a leakage hole (1-4) and a spray head (1-5), the lower part of the smoke collection cover (1-1) is communicated with the welding isolation cover (2), the upper part of the smoke collection cover (1-1) is communicated with the side edge of the smoke exhaust pipe (1-3) through the smoke exhaust elbow (1-2), the lower end of the smoke exhaust pipe (1-3) is provided with the leakage hole (1-4), and the inner side of the smoke exhaust pipe (1-3) is provided with the spray head (1-5) at the upper part.

3. The semi-enclosed oxygen-free multi-functional welding station according to claim 2, characterized in that, The sodium bicarbonate powder storage assembly (6) comprises a rotating plate (6-1) and a sodium bicarbonate powder storage tank (6-2), the rotating plate (6-1) is installed in the rectangular through hole formed in the side edge of the welding isolation cover (2) through a vertical rotating shaft, the lower part of the rotating plate (6-1) is fixedly installed with the sodium bicarbonate powder storage tank (6-2), and the rectangular through hole formed in the side edge of the welding isolation cover (2) is provided with a wind screen.

4. The semi-enclosed oxygen-free multi-functional welding station of claim 1, wherein, The inner side of the welding isolation cover (2) is provided with a lighting lamp.

5. The semi-enclosed oxygen-free multi-functional welding station according to claim 4, characterized in that, The glass window welding operation window (3) is provided with a rubber curtain.

6. The semi-enclosed oxygen-free multi-functional welding station of claim 3, wherein, The sodium bicarbonate powder storage tank (6-2) is a semicircular groove.

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