Nitrogen making machine special for welding

Abstract

The utility model relates to the technical field of nitrogen making machines, and discloses a special nitrogen making machine for welding, which comprises a shell body, a gas cylinder is fixedly connected in the shell body, a gas pipe is fixedly connected above the gas cylinder, one end of the gas pipe is fixedly connected with a four-way pipe, a bearing plate I is arranged in the gas pipe, and a bearing plate II is arranged in the bearing plate I; a filter plate is slidably connected to the interior of the first bearing plate, a second bearing plate is attached to the upper portion of the first bearing plate, a first connecting plate is fixedly connected to the upper portion of the filter plate, the side of the second bearing plate is fixedly connected to the outer wall of the first connecting plate, and a first dismounting and mounting assembly is arranged at one end of the second bearing plate. The bearing plate provided with the filter screen is connected with the fixing plate above the bearing plate through the connecting plate, the connecting plate can be controlled by screwing the nut, the filter screen is convenient to replace, meanwhile, the pipeline can be firmly clamped and fixed by adopting the threaded pipeline and the clamping sleeve structure and screwing the nut, and the universality and the flexibility of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen generators, and in particular to a nitrogen generator specifically for welding. Background Technology

[0002] Traditional nitrogen generators are typically used to separate high-purity nitrogen from the air and are widely used in industries such as welding, chemicals, and food. Because their working principle is based on air separation technology, producing nitrogen through compression, purification, and adsorption, the filtration system, structural design, and cleaning and maintenance of the nitrogen generator are crucial factors in improving equipment operating efficiency and durability. Most existing traditional nitrogen generators use a fixed structure design, which, while meeting basic nitrogen supply needs, has certain shortcomings in terms of filter replacement and nitrogen outlet connection.

[0003] Existing traditional nitrogen generators typically employ a fixed structure design, where the filtration system consists of multiple stationary components connected to the nitrogen generation module via pipelines. The device uses compressed air that has passed through a filter to remove impurities before entering the nitrogen generation module to produce high-purity nitrogen. Some units are also equipped with a nitrogen buffer tank to stabilize the nitrogen output pressure. After prolonged use, the equipment requires manual disassembly for regular cleaning or maintenance.

[0004] Existing nitrogen generators typically use bolted or welded internal filter plates for fixing, making disassembly and cleaning difficult, resulting in cumbersome and time-consuming maintenance, and reducing equipment efficiency. After long-term operation, dust and impurities easily accumulate on the filter plates, affecting not only the normal operation of the nitrogen generator but also potentially causing a decline in equipment performance. Therefore, an improved, easily replaceable structural design is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a nitrogen generator specifically for welding, which aims to improve the problem that the internal filter plates of existing nitrogen generators are usually designed with a fixed structure, making it difficult to disassemble and clean the device in a convenient way, resulting in heavy and time-consuming maintenance work and reduced equipment efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen generator for welding, comprising a housing body, a gas cylinder fixedly connected inside the housing body, a gas pipe fixedly connected above the gas cylinder, a four-way pipe fixedly connected to one end of the gas pipe, a first load-bearing plate disposed in the gas pipe, a filter plate slidably connected inside the first load-bearing plate, a second load-bearing plate attached above the first load-bearing plate, a first connecting plate fixedly connected above the filter plate, the second load-bearing plate fixedly connected to the outer wall of the first connecting plate on its side, and a first disassembly / assembly assembly disposed at one end of the second load-bearing plate;

[0007] The first assembly / disassembly assembly includes a second connecting plate, a spiral knob, and a screw. The second connecting plate is slidably connected inside the second load-bearing plate, the screw is threadedly connected inside the second connecting plate, and the spiral knob is fixedly connected to one end of the screw.

[0008] Furthermore, an air pipe is fixedly connected to the outside of the outer shell body, and a threaded pipe is fixedly connected to the outside of the air pipe. A nitrogen outlet pipe is provided at one end of the threaded pipe, and a second disassembly and assembly assembly is provided on both sides of the threaded pipe.

[0009] Furthermore, the second disassembly and assembly assembly includes a nut, a ferrule, and a threaded pipe. The nut is internally threaded and connected to the outer wall of the threaded pipe, and the ferrule is internally slidably connected to the outer wall of the nitrogen outlet pipe.

[0010] Furthermore, the ferrule should be an elastic ring structure, with its internal threads matching the external threads of the threaded pipe.

[0011] Furthermore, the first load-bearing plate and the second load-bearing plate are provided with grooves on one side that conform to the shape of the second connecting plate.

[0012] Furthermore, the outer shell body has a fixedly connected load-bearing plate three inside, and the load-bearing plate three has an air compression device, an air pretreatment device and a gas purification device arranged sequentially from left to right inside.

[0013] Furthermore, a nitrogen generator, a nitrogen buffer, and a gas pressurization device are arranged sequentially from right to left inside the lower part of the outer shell.

[0014] Furthermore, a door panel is rotatably connected to the outside of the outer shell body, and a welding machine is fixedly connected to the upper part of the outer shell body.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the load-bearing plate containing the filter screen and the upper fixing plate are connected together by a connecting plate. Tightening the nut at the connection point will cause the nut on the screw to rotate, thereby realizing the control of the connecting plate and facilitating the replacement of the filter screen. When it is necessary to disassemble the filter screen for cleaning or replacement, simply loosen the nut at the connection point, and the connecting plate will loosen, allowing the load-bearing plate containing the filter screen to be easily removed from the equipment, completing the filter screen replacement or cleaning operation. This improves the convenience of filter screen replacement and thus enhances the practicality of the nitrogen generator.

[0017] 2. In this utility model, a threaded pipe is used, with a nut and a clamp at each of the left and right ends. When it is necessary to connect the pipe, the pipe is placed at the interface of the nitrogen outlet, and the nuts at both ends are turned. The nuts drive the clamps to move inward, thereby achieving a firm clamping and fixing of the pipe. This allows the nitrogen outlet pipe to be easily connected to pipes of different models, improving the versatility and flexibility of the equipment, and thus improving the practicality of the nitrogen generator. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a nitrogen generator for welding proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of one side of the gas cylinder structure of a welding-specific nitrogen generator proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of one side structure of the load-bearing plate of a welding-specific nitrogen generator proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of one side of the outer wall structure of the outer shell of a welding-specific nitrogen generator proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the other side of the outer wall of the outer shell of a welding-specific nitrogen generator proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of one side of the nitrogen outlet pipe of a welding-specific nitrogen generator proposed in this utility model.

[0024] Legend:

[0025] 1. Outer shell; 2. Door panel; 3. Load-bearing plate one; 4. Load-bearing plate two; 5. Connecting plate one; 6. Connecting plate two; 7. Screw knob; 8. Load-bearing plate three; 9. Gas pipe; 10. Four-way pipe; 11. Gas cylinder; 12. Air compressor; 13. Air pretreatment device; 14. Gas purification device; 15. Nitrogen generator; 16. Nitrogen buffer device; 17. Gas booster; 18. Nitrogen outlet pipe; 19. Nut; 20. Threaded pipe; 21. Filter plate; 22. Screw; 23. Welding machine; 24. Compression fitting. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1 - Figure 3 A nitrogen generator for welding includes a housing body 1. A gas cylinder 11 is fixedly connected inside the housing body 1. The gas cylinder 11 is used to ensure the airtightness of the internal gas and prevent gas contamination. A gas pipe 9 is fixedly connected above the gas cylinder 11. A four-way pipe 10 is fixedly connected to one end of the gas pipe 9. The four-way pipe 10 has four gas outlets, which saves the number of gas pipes 9 used. A load-bearing plate 3 is set in the gas pipe 9. A filter plate 21 is slidably connected inside the load-bearing plate 3. The filter plate 21 filters impurities and fine particles in the gas, so that the subsequent gas is relatively clean. A load-bearing plate 4 is attached to the top of the load-bearing plate 3. A connecting plate 5 is fixedly connected to the top of the filter plate 21. The connecting plate 5 is connected to both the load-bearing plate 4 and the filter plate 21, making it easy to remove the filter plate 21. The load-bearing plate 4 is fixedly connected to the outer wall of the connecting plate 5 on the side. A first disassembly and assembly component is set at one end of the load-bearing plate 4.

[0028] The first assembly / disassembly component includes a second connecting plate 6, a spiral knob 7, and a screw 22. The second connecting plate 6 is slidably connected inside the second load-bearing plate 4. By sliding in the groove, the second connecting plate 6 can fix the second load-bearing plate 4 and the first load-bearing plate 3. The screw 22 is threadedly connected inside the second connecting plate 6. The spiral knob 7 is fixedly connected to one end of the screw 22. Turning the spiral knob 7 moves the second connecting plate 6, thus controlling the first assembly / disassembly component.

[0029] Reference Figure 4 - Figure 6The outer casing 1 is externally fixedly connected to an air pipe 9, and an externally fixedly connected to an externally threaded pipe 20. The threaded pipe 20 has air outlets on both sides for easy connection to other types of pipes. A nitrogen outlet pipe 18 is provided at one end of the threaded pipe 20. Second disassembly / assembly components are provided on both sides of the threaded pipe 20. The second disassembly / assembly components include a nut 19, a clamping sleeve 24, and the threaded pipe 20. The nut 19 moves on the threaded pipe 20 to press against the clamping sleeve 24, thereby controlling the tightness of the clamping sleeve 24. The internal threads of the nut 19 are connected to the outer wall of the threaded pipe 20, and the internal threads of the clamping sleeve 24 are slidably connected to the outer wall of the nitrogen outlet pipe 18. The clamping sleeve 24 deforms when compressed, allowing different pipes to fit tightly against the threaded pipe 20. Its internal threads match the external threads of the threaded pipe 20. The first load-bearing plate 3 and the second load-bearing plate 4 are open on one side. The outer shell 1 has a groove that conforms to the shape of the connecting plate 26, allowing the connecting plate 26 to fit tightly. Inside the outer shell 1, there is a fixed connecting load-bearing plate 38, which can provide fixed space for multiple mechanical devices. Inside the load-bearing plate 38, from left to right, there are an air compressor 12, an air pretreatment device 13, and a gas purification device 14. Gas enters these devices in sequence and reacts, making the subsequent gas relatively clean. Inside the lower part of the outer shell 1, from right to left, there are a nitrogen generator 15, a nitrogen buffer device 16, and a gas pressurization device 17, which are used to produce nitrogen that meets different standards. The outer shell 1 is rotatably connected to a door panel 2. When the door panel 2 is closed, it can fit tightly to ensure the airtightness of the outer shell 1. A welding machine 23 is fixedly connected to the upper part of the outer shell 1 for convenient use during work and production.

[0030] Working principle: After the nitrogen generator is started, the gas in cylinder 11 first enters the easily detachable filter device connected to the gas pipe 9 through the gas pipe 9. This device connects the load-bearing plate 3 containing the filter screen and the upper connecting plate 5 together through the connecting plate 2 6. Turning the screw knob 7 at the connection point drives the screw knob 7 on the screw 22 to rotate, thereby controlling the connecting plate 2 6 and facilitating the replacement or cleaning of the filter plate 21. In this device, dust, impurities, and small particles in the gas are initially filtered to ensure that the subsequent gas is relatively clean. Subsequently, the gas enters the air compression device 12, which, together with the air pretreatment device 13 and the gas purification device 14, further improves the gas efficiency. The purity of the gas is ensured, and the purified gas enters the nitrogen generator 15. In conjunction with the nitrogen buffer device 16, the continuity and stability of nitrogen output are ensured. Finally, the nitrogen passes through the gas pressurization device 17, and the nitrogen pressure is increased to a higher level to meet the nitrogen pressure requirements of different processes. After treatment, the gas enters the nitrogen outlet pipe 18 and is connected to a device that facilitates connection with other pipes. This device consists of a threaded pipe 20, a nut 19 at each end, and a clamp 24. The pipe is placed at the interface, and the nut 19 is turned to move the clamp 24 inward, thereby fixing the pipe and facilitating connection with other pipes of different types.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nitrogen generator for welding, comprising a housing (1), characterized in that: A gas cylinder (11) is fixedly connected inside the outer shell body (1). A gas pipe (9) is fixedly connected above the gas cylinder (11). A four-way pipe (10) is fixedly connected to one end of the gas pipe (9). A load-bearing plate (3) is provided in the gas pipe (9). A filter plate (21) is slidably connected inside the load-bearing plate (3). A load-bearing plate (4) is attached to the top of the load-bearing plate (3). A connecting plate (5) is fixedly connected above the filter plate (21). The load-bearing plate (4) is fixedly connected to the outer wall of the connecting plate (5) on the side. A first disassembly and assembly component is provided at one end of the load-bearing plate (4). The first disassembly and assembly assembly includes a second connecting plate (6), a spiral knob (7), and a screw (22). The second connecting plate (6) is slidably connected inside the second load-bearing plate (4). The screw (22) is threadedly connected inside the second connecting plate (6). The spiral knob (7) is fixedly connected to one end of the screw (22).

2. The welding-specific nitrogen generator according to claim 1, characterized in that: The outer shell body (1) is fixedly connected to an air pipe (9), and the air pipe (9) is fixedly connected to a threaded pipe (20). One end of the threaded pipe (20) is provided with a nitrogen outlet pipe (18), and both sides of the threaded pipe (20) are provided with second disassembly and assembly components.

3. A welding-specific nitrogen generator according to claim 2, characterized in that: The second disassembly and assembly assembly includes a nut (19), a ferrule (24), and a threaded pipe (20). The nut (19) is internally threaded to the outer wall of the threaded pipe (20), and the ferrule (24) is internally slidably connected to the outer wall of the nitrogen outlet pipe (18).

4. A welding-specific nitrogen generator according to claim 3, characterized in that: The ferrule (24) should be an elastic ring structure, with its internal threads matching the external threads of the threaded pipe (20).

5. A welding-specific nitrogen generator according to claim 1, characterized in that: The first load-bearing plate (3) and the second load-bearing plate (4) have grooves on one side that conform to the shape of the second connecting plate (6).

6. A welding-specific nitrogen generator according to claim 1, characterized in that: The outer shell body (1) has a fixedly connected load-bearing plate three (8) inside. The load-bearing plate three (8) is provided with an air compressor (12), an air pretreatment device (13) and a gas purification device (14) from left to right.

7. A welding-specific nitrogen generator according to claim 1, characterized in that: The lower part of the outer shell (1) is provided with a nitrogen generator (15), a nitrogen buffer device (16) and a gas pressurization device (17) arranged from right to left.

8. A welding-specific nitrogen generator according to claim 1, characterized in that: A door panel (2) is rotatably connected to the outside of the outer shell body (1), and a welding machine (23) is fixedly connected to the upper part of the outer shell body (1).

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