Nitrogen purging device for valve assembly

Abstract

The utility model relates to the technical field of valve assembly, and discloses a nitrogen purging device for valve assembly, the periphery of the bottom of a base is fixedly connected with universal wheels, the rear side of the top of the base is fixedly connected with a handlebar, the front side of the top of the base is fixedly connected with a mounting plate, the left end of the mounting plate is fixedly connected with a servo motor, and the right end of the mounting plate is fixedly connected with a valve. An arc-shaped groove is formed in the middle side of the top of the base, a gas tank is slidably connected into the arc-shaped groove, a connecting opening is fixedly connected to the front side of the gas tank, a communicating pipe is in threaded connection with the front side of the connecting opening, a pressure gauge is arranged at the top of the communicating pipe, and a gas conveying hose is arranged at the front end of the communicating pipe. The base, the gas tank, the universal wheels and the like are arranged to be used in cooperation, a worker pushes the universal wheels to move by holding a handlebar, the device is easily moved to a designated place through the universal wheels, the worker does not need to carry the device, and the working intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve assembly, in particular to a nitrogen purge device for valve assembly. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems. Before installing the valves, the pipelines need to be purged with nitrogen to clean impurities on the inner wall.

[0003] In the existing valve nitrogen purge devices, most of the gas cylinders are used individually, which is limited by the volume and weight of the gas cylinders, making it inconvenient for workers to move them to the processing site. The handling work is high in intensity, which affects work efficiency. It is also inconvenient to replace the gas cylinders at any time, which is inconvenient for workers to use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a nitrogen purging device for valve assembly to solve the problems in the prior art mentioned in the above background technology, in which most gas cylinders are used alone, and are limited by the volume and weight of the gas cylinders, making it inconvenient for workers to move them to the processing site, and the handling work intensity is high, thus affecting work efficiency, and it is inconvenient to replace the gas cylinders at any time, and it is inconvenient for workers to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nitrogen purge device for valve assembly, comprising a base, the bottom of the base is fixedly connected with universal wheels around, the top rear side of the base is fixedly connected with a handlebar, both sides of the top of the base are fixedly connected with vertical plates, the outer sides of the two vertical plates are fixedly connected with electric push rods, the sides of the two electric push rods close to each other are fixedly connected with limit plates, the inner side of the limit plates is fixedly connected with a rubber pad, the top front side of the base is fixedly connected with a mounting plate, the inner side of the mounting plate is rotatably connected with a winding roller, the right end of the winding roller is provided with a slot, the left end of the mounting plate is fixedly connected with a servo motor, the top middle side of the base is provided with an arc groove, the inside of the arc groove is slidably connected with a gas tank, the front side of the gas tank is fixedly connected with a connecting port, the front side of the connecting port is threadedly connected with a connecting pipe, the top of the connecting pipe is provided with a pressure gauge, the front end of the connecting pipe is provided with a gas hose, and the front end of the gas hose is fixedly connected with a Laval nozzle.

[0006] Preferably, one end of the two electric push rods close to each other passes through the outer walls of the two vertical plates and extends to the inner sides of the two vertical plates.

[0007] Preferably, the two limit plates are arc-shaped, and the two limit plates are tightly fitted to two sides of the gas tank through the rubber pads.

[0008] By adopting the above technical solution, a limit plate, rubber pads, etc. are set for use with an electric push rod. The limit plate is driven to move by controlling the extension of the electric push rod. The limit plate then fits tightly with the gas tank through the rubber pad to clamp and fix the gas tank, making it convenient for staff to use.

[0009] Preferably, the curvature of the arc-shaped groove is the same as that of the gas tank, and the inner wall of the arc-shaped groove fits the bottom of the gas tank.

[0010] By adopting the above technical solution, an arc groove, a gas tank and the like are arranged for use in combination, and the inner wall of the arc groove fits with the bottom of the gas tank, thereby preventing the gas tank from shaking and facilitating subsequent clamping and fixing.

[0011] Preferably, the diameter of the slot is the same as the diameter of the thinnest part of the Laval nozzle.

[0012] By adopting the above technical solution and setting the Laval nozzle, the flow rate of nitrogen spraying can be increased, thereby improving the purging effect and improving the work efficiency.

[0013] Preferably, the output end of the servo motor passes through the inner wall of the mounting plate and is fixedly connected to the left end of the winding roller.

[0014] By adopting the above technical solution, a servo motor, a winding roller, etc. are set to be used in conjunction with the card slot. The Laval nozzle is inserted into the card slot, and the winding roller is driven to rotate by the servo motor. The rotation of the winding roller drives the air hose to be wrapped around the surface of the collecting roller through the Laval nozzle, which is convenient for the staff to use.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The nitrogen purge device for valve assembly is used in conjunction with a base, a gas tank, a universal wheel, etc. The staff can push the universal wheel by holding the handlebars and easily move the device to the designated location through the universal wheel. The staff does not need to carry it, which reduces the work intensity. The Laval nozzle is inserted into the slot and the winding roller is driven to rotate by the servo motor. The winding roller rotates and drives the gas hose to wrap around the surface of the collecting roller through the Laval nozzle, which is convenient for the staff to use.

[0017] 2. The valve is assembled with a nitrogen purge device, which is used in conjunction with a limit plate, a rubber pad, an electric push rod, etc. By controlling the electric push rod, the electric push rod contracts to drive the limit plate and the rubber pad away from the surface of the gas tank, thereby releasing the limit on the gas tank. At this time, the staff can remove the gas tank from the base without the help of tools, which is convenient for the staff to replace the gas tank at any time and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 This is a rear view structural diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the top view of the base structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the gas tank of the utility model

[0022] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. base; 2. universal wheel; 3. handlebar; 4. arc groove; 5. vertical plate; 6. electric push rod; 7. limit plate; 8. rubber pad; 9. mounting plate; 10. winding roller; 11. servo motor; 12. gas tank; 13. connection port; 14. connecting pipe; 15. pressure gauge; 16. gas hose; 17. Laval nozzle; 18. slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] Please refer to Figure 1-4A nitrogen purge device for valve assembly comprises a base 1, universal wheels 2 are fixedly connected to the bottom of the base 1, a handlebar 3 is fixedly connected to the rear side of the top of the base 1, vertical plates 5 are fixedly connected to both sides of the top of the base 1, electric push rods 6 are fixedly connected to the outer sides of the two vertical plates 5, the ends of the two electric push rods 6 close to each other penetrate the outer walls of the two vertical plates 5 and extend to the inner sides of the two vertical plates 5, the sides of the two electric push rods 6 close to each other are fixedly connected to a limiting plate 7, the inner side of the limiting plate 7 is fixedly connected to a rubber pad 8, a mounting plate 9 is fixedly connected to the front side of the top of the base 1, a winding roller 10 is rotatably connected to the inner side of the mounting plate 9, and a card slot 1 is provided at the right end of the winding roller 10 8. A servo motor 11 is fixedly connected to the left end of the mounting plate 9. An arc groove 4 is provided on the middle side of the top of the base 1. A gas tank 12 is slidably connected to the inside of the arc groove 4. The curvature of the arc groove 4 is the same as that of the gas tank 12, and the inner wall of the arc groove 4 fits with the bottom of the gas tank 12. The two limit plates 7 are arc-shaped, and the two limit plates 7 are tightly fitted with both sides of the gas tank 12 through rubber pads 8. A connecting port 13 is fixedly connected to the front side of the gas tank 12. A connecting pipe 14 is threadedly connected to the front side of the connecting port 13. A pressure gauge 15 is provided on the top of the connecting pipe 14. A gas hose 16 is provided at the front end of the connecting pipe 14. A Laval nozzle 17 is fixedly connected to the front end of the gas hose 16.

[0027] Working principle: When in use, the staff pushes the universal wheel 2 by holding the handlebar 3. The staff can easily move the device to the designated location through the universal wheel 2 without the need for staff to carry it. At this time, the staff can aim the Laval nozzle 17 at the valve pipeline that needs to be purged, and start the gas tank 12. The nitrogen in the gas tank 12 is transported to the Laval nozzle 17 through the gas hose 16 and the nitrogen is accelerated to be ejected through the Laval nozzle 17, thereby purging the valve pipeline. When the purging work is completed, the staff can insert the Laval nozzle 17 into the card slot 18, and then drive the winding roller 10 to rotate through the servo motor 11. The winding roller 10 rotates through the Laval nozzle 17 to drive the gas hose 16 to be wound around the surface of the collecting roller, which is convenient for the staff to use.

[0028] Compared with the related art, the nitrogen purging device for valve assembly provided by the utility model has the following beneficial effects: by setting a base 1, a gas tank 12, a universal wheel 2 and the like for use in combination, the staff pushes the universal wheel 2 by holding the handlebar 3, and easily moves the device to a designated location through the universal wheel 2, and no need for staff to carry it reduces the work intensity. By inserting the Laval nozzle 17 into the slot 18, and driving the winding roller 10 to rotate through the servo motor 11, the winding roller 10 rotates through the Laval nozzle 17 to drive the gas hose 16 to be wound around the surface of the collecting roller, which is convenient for the staff to use.

[0029] Embodiment 2:

[0030] Please refer to Figure 1-5 , both sides of the top of the base 1 are fixedly connected with vertical plates 5, the outer sides of the two vertical plates 5 are fixedly connected with electric push rods 6, the sides of the two electric push rods 6 close to each other are fixedly connected with limit plates 7, the inner side of the limit plate 7 is fixedly connected with a rubber pad 8, an arc groove 4 is opened on the middle side of the top of the base 1, and a gas tank 12 is slidably connected inside the arc groove 4. The curvature of the arc groove 4 is the same as that of the gas tank 12, and the inner wall of the arc groove 4 fits with the bottom of the gas tank 12. The shape of the two limit plates 7 is arc-shaped, and the two limit plates 7 are tightly fitted with both sides of the gas tank 12 through the rubber pad 8. A connecting port 13 is fixedly connected to the front side of the gas tank 12, and a connecting pipe 14 is threadedly connected to the front side of the connecting port 13. A pressure gauge 15 is arranged on the top of the connecting pipe 14, and a gas hose 16 is arranged at the front end of the connecting pipe 14. A Laval nozzle 17 is fixedly connected to the front end of the gas hose 16.

[0031] Working principle: when the nitrogen inside the gas tank 12 is used up, the staff can start the electric push rod 6, which will shrink and drive the limit plate 7 and the rubber pad 8 away from the surface of the gas tank 12, thereby releasing the limit on the gas tank 12. At this time, the staff can lift the gas tank 12 from the base 1, and put the new gas tank 12 into the arc groove 4 on the base 1, and restart the electric push rod 6. The electric push rod 6 extends and drives the limit plate 7 to move. The limit plate 7 then fits tightly with the gas tank 12 through the rubber pad 8 to clamp and fix the gas tank 12, making it convenient for the staff to replace the gas tank 12 at any time for easy use.

[0032] Compared with the related art, the nitrogen purging device for valve assembly provided by the utility model has the following beneficial effects: by setting a limit plate 7, a rubber pad 8, an electric push rod 6 and the like for use in combination, by controlling the electric push rod 6, the electric push rod 6 contracts and drives the limit plate 7 and the rubber pad 8 away from the surface of the gas tank 12, thereby releasing the limit on the gas tank 12. At this time, the staff can remove the gas tank 12 from the base 1 without the aid of tools, which makes it convenient for the staff to replace the gas tank 12 at any time and is easy to use.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nitrogen purge device for valve assembly, comprising a base (1), characterized in that: The bottom of the base (1) is fixedly connected with universal wheels (2) all around, the top rear side of the base (1) is fixedly connected with a handlebar (3), both sides of the top of the base (1) are fixedly connected with vertical plates (5), the outer sides of the two vertical plates (5) are fixedly connected with electric push rods (6), the sides of the two electric push rods (6) close to each other are fixedly connected with a limit plate (7), the inner side of the limit plate (7) is fixedly connected with a rubber pad (8), the top front side of the base (1) is fixedly connected with a mounting plate (9), and the inner side of the mounting plate (9) is rotatably connected with a winding roller (10); The right end of the winding roller (10) is provided with a slot (18), the left end of the mounting plate (9) is fixedly connected to a servo motor (11), the top middle side of the base (1) is provided with an arcuate slot (4), the interior of the arcuate slot (4) is slidably connected to a gas tank (12), the front side of the gas tank (12) is fixedly connected to a connecting port (13), the front side of the connecting port (13) is threadedly connected to a connecting pipe (14), the top of the connecting pipe (14) is provided with a pressure gauge (15), the front end of the connecting pipe (14) is provided with a gas supply hose (16), and the front end of the gas supply hose (16) is fixedly connected to a Laval nozzle (17).

2. A nitrogen purge device for valve assembly according to claim 1, characterized in that: One end of the two electric push rods (6) that is close to each other penetrates the outer wall of the two vertical plates (5) and extends to the inner side of the two vertical plates (5).

3. A nitrogen purge device for valve assembly according to claim 1, characterized in that: The two limit plates (7) are arc-shaped, and the two limit plates (7) are tightly fitted to the two sides of the gas tank (12) through the rubber pads (8).

4. A nitrogen purge device for valve assembly according to claim 1, characterized in that: The curvature of the arc-shaped groove (4) is the same as that of the gas tank (12), and the inner wall of the arc-shaped groove (4) fits the bottom of the gas tank (12).

5. The nitrogen purge device for valve assembly according to claim 1, characterized in that: The diameter of the clamping groove (18) is the same as the diameter of the thinnest part of the Laval nozzle (17).

6. A nitrogen purge device for valve assembly according to claim 1, characterized in that: The output end of the servo motor (11) passes through the inner wall of the mounting plate (9) and is fixedly connected to the left end of the winding roller (10).

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