Automatic drainage device for gas storage tank of nitrogen making machine

Abstract

The utility model relates to the technical field of drainage devices for gas storage tanks of nitrogen making machines, and discloses an automatic drainage device for a gas storage tank of a nitrogen making machine, which comprises a valve body, a ball body is arranged in the valve body, a valve rod is fixedly connected to the surface of the ball body, a control box is fixedly connected to the upper surface of the valve body, a cavity is formed in the control box, and the valve rod is fixedly connected to the valve rod. The upper end of the valve rod rotatably penetrates into the cavity and rotatably penetrates out of the control box, the valve rod is movably sleeved with a control rod, and manual opening of the valve body is achieved through cooperation of the control rod, a fixing disc, an inserting rod, a grip and other structures. Therefore, the situation that drainage work cannot be effectively conducted due to circuit faults and the like is effectively avoided, in daily use, opening and closing of the valve body can be achieved only when the control rod is lifted upwards, the situation of manual misoperation is avoided, and reliability, safety and practicability are high.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen generator storage tank drainage device, specifically an automatic drainage device for nitrogen generator storage tank. Background Technology

[0002] A nitrogen generator is a device that uses air separation technology to produce nitrogen. When the nitrogen generator is working, it compresses air and uses a specific separation process to separate oxygen, carbon dioxide and other gases from the air, thereby obtaining high-purity nitrogen. As an important part of the nitrogen generation system, the storage tank's main function is to store the nitrogen produced by the nitrogen generator, and to buffer and stabilize the gas pressure, ensuring that downstream gas-using equipment can obtain a stable and continuous supply of nitrogen.

[0003] In some existing nitrogen generator storage tank automatic drainage devices, a control module is typically set up to automatically activate an electric ball valve according to a preset time to perform the drainage task. Once the set drainage time is reached, the module will control the electric ball valve to close, thus starting the next cycle. However, when components such as electronic timers and pneumatic actuators in the automatic drainage device fail due to circuit faults or gas supply interruptions, they cannot perform effective drainage work. In actual use, this has certain limitations, relatively poor reliability and safety, and poor practicality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an automatic drainage device for nitrogen generator storage tanks, thereby solving the problem that some existing automatic drainage devices for nitrogen generator storage tanks have certain limitations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic drainage device for a nitrogen generator's gas storage tank, comprising a valve body, an interior ball, a valve stem fixedly connected to the surface of the ball, a control box fixedly connected to the upper surface of the valve body, a cavity inside the control box, the upper end of the valve stem rotatably penetrating into the cavity and exiting the control box, a control rod movably sleeved on the outside of the valve stem, the upper end of the control rod movably penetrating the control box, a control component on the outer surface of the control box, a movable chamber inside the control rod, a fixed plate fixedly sleeved at one end of the valve stem located inside the movable chamber, the fixed plate movably disposed inside the movable chamber, a plug-in rod fixedly connected to the bottom wall of the movable chamber, a plug-in groove on the lower surface of the fixed plate, the plug-in rod and the plug-in groove being compatible, and sealing components on both outer surfaces of the valve body.

[0006] Preferably, the control component includes a control motor, which is fixedly connected to the outer surface of the control box. The output shaft of the control motor rotates through the interior of the cavity. A first bevel gear is fixedly connected to the output shaft of the control motor. A second bevel gear is fixedly sleeved on the outer surface of one end of the valve stem located inside the cavity. The first bevel gear and the second bevel gear are meshed together.

[0007] Preferably, a rotating ring is rotatably sleeved on the lower end of the control rod, and limit grooves are formed on both sides of the inner wall of the movable chamber. Two limit blocks are fixedly connected to the outer surface of the rotating ring, and the two limit blocks are slidably connected inside the two limit grooves respectively.

[0008] Preferably, a spring is fixedly connected between the upper surface of the rotating ring and the top wall of the movable chamber, and the spring is movably sleeved on the outside of the control rod.

[0009] Preferably, a handle is fixedly connected to the upper outer surface of the control lever.

[0010] Preferably, the sealing assembly includes two mounting blocks, both of which are fixedly connected to the outer surface of the valve body. Each of the two mounting blocks has a guide groove on its surface, a drive assembly is disposed inside the guide groove, and a sealing half-ring is disposed outside the mounting block.

[0011] Preferably, the drive assembly includes a threaded rod rotatably connected inside the guide groove, with one end of the threaded rod rotatably passing through the interior of the mounting block from the valve body. A guide block is threadedly fitted onto the outer surface of the threaded rod, and the guide block is slidably connected inside the guide groove. The guide block and the sealing half-ring are fixedly connected.

[0012] Preferably, a sealing gasket is provided on the adjacent side surface of the two sealing half-rings.

[0013] Compared with the prior art, this utility model provides an automatic drainage device for the nitrogen generator's gas storage tank, which has the following beneficial effects:

[0014] 1. This automatic drainage device for the nitrogen generator's gas storage tank, through the cooperation of a control lever, a fixed plate, a plug-in rod, and a handle, enables manual opening of the valve body. This effectively avoids situations where drainage cannot be performed due to circuit failures or other reasons. Furthermore, in daily use, the valve body can only be opened and closed when the control lever is lifted upwards, avoiding human error. It has high reliability, safety, and practicality.

[0015] 2. The automatic drainage device for the nitrogen generator's gas storage tank, through the cooperation of structures such as mounting blocks, sealing half-rings, threaded rods, guide blocks, and sealing gaskets, achieves secondary sealing of the gaps after pipeline connection, further improving the sealing performance of the pipeline connection. It is simple to operate and highly practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the automatic drainage device for the nitrogen generator's storage tank according to this utility model;

[0017] Figure 2 This is a cross-sectional view of the control box of this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a first schematic cross-sectional view of the control lever of this utility model;

[0020] Figure 5 This is a second schematic cross-sectional view of the control lever of this utility model;

[0021] Figure 6 This is a cross-sectional view of the rotating ring of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the mounting block of this utility model.

[0023] In the diagram: 1. Valve body; 2. Ball; 3. Valve stem; 4. Control box; 5. Cavity; 6. Control rod; 7. Control assembly; 8. Movable chamber; 9. Fixed plate; 10. Insert rod; 11. Insert groove; 12. Rotating ring; 13. Limit groove; 14. Limit block; 15. Spring; 16. Handle; 17. Mounting block; 18. Sealing half ring; 19. Guide groove; 20. Threaded rod; 21. Guide block; 22. Sealing gasket;

[0024] 701. Control motor; 702. First bevel gear; 703. Second bevel gear. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-7This utility model provides a technical solution: an automatic drainage device for a nitrogen generator's gas storage tank, comprising a valve body 1, a ball 2 inside the valve body 1, a valve stem 3 fixedly connected to the surface of the ball 2, a control box 4 fixedly connected to the upper surface of the valve body 1, a cavity 5 inside the control box 4, the upper end of the valve stem 3 rotatably penetrating into the cavity 5 and exiting the control box 4, a control rod 6 movably sleeved on the outside of the valve stem 3, the upper end of the control rod 6 movably penetrating the control box 4, and the control box 4... The surface is provided with a control component 7, and the inside of the control rod 6 is provided with a movable chamber 8. The valve stem 3 is located inside the movable chamber 8 and a fixed plate 9 is fixedly sleeved on one end. The fixed plate 9 is movably disposed inside the movable chamber 8. The bottom wall of the movable chamber 8 is fixedly connected with a plug rod 10. The lower surface of the fixed plate 9 is provided with a plug groove 11. The plug rod 10 and the plug groove 11 are compatible. Both ends of the valve body 1 are provided with sealing components, and the sealing components on both sides have the same structure. Therefore, the following description focuses on the sealing component on the left side.

[0027] The control component 7 includes a control motor 701, which is fixedly connected to the outer surface of the control box 4. The output shaft of the control motor 701 rotates through the interior of the cavity 5. The output shaft of the control motor 701 is fixedly connected to a first bevel gear 702. A second bevel gear 703 is fixedly sleeved on the outer surface of one end of the valve stem 3 located inside the cavity 5. The first bevel gear 702 and the second bevel gear 703 are meshed together.

[0028] In the above embodiment, the output shaft of the control motor 701 does not have a self-locking function, so its output shaft can rotate freely when the control motor 701 is not started.

[0029] The control motor 701 is matched with a power supply, wires, controller, and microcomputer. It is also matched with a circuit breaker, leakage protection switch, fuse, switching power supply, intermediate relay, digital display relay control module, and operation and fault indicator lights. Since these are all existing structures, they will not be described in detail in this article. The control motor 701 is automatically started according to a preset time. The rotation of valve stem 3, i.e., ball 2, is achieved through the cooperation of control motor 701, first bevel gear 702, and second bevel gear 703, thereby performing the drainage task. Once the set drainage time is reached, the module will control the device to be in the closed state.

[0030] The lower end of the control lever 6 is fitted with a rotating ring 12. Limiting grooves 13 are provided on both sides of the inner wall of the movable chamber 8. Two limiting blocks 14 are fixedly connected to the outer surface of the rotating ring 12. The two limiting blocks 14 are slidably connected to the inside of the two limiting grooves 13 respectively.

[0031] A spring 15 is fixedly connected between the upper surface of the rotating ring 12 and the top wall of the movable chamber 8, and the spring 15 is movably sleeved on the outside of the control rod 6.

[0032] A handle 16 is fixedly connected to the upper outer surface of the control lever 6.

[0033] The sealing assembly includes two mounting blocks 17, both of which are fixedly connected to the outer surface of the valve body 1. Guide grooves 19 are provided on the surface of both mounting blocks 17. A drive assembly is provided inside the guide grooves 19, and a sealing half-ring 18 is provided on the outside of the mounting blocks 17.

[0034] The drive assembly includes a threaded rod 20, which is rotatably connected inside the guide groove 19. One end of the threaded rod 20 rotates through the interior of the mounting block 17. A guide block 21 is threadedly fitted on the outer surface of the threaded rod 20. The guide block 21 is slidably connected inside the guide groove 19. The guide block 21 and the sealing half ring 18 are fixedly connected.

[0035] Both sealing half-rings 18 have sealing gaskets 22 on their adjacent surfaces. The cooperation between the sealing half-rings 18 and the sealing gaskets 22 further ensures the sealing effect at the gaps when the device is connected to the external pipeline.

[0036] Working principle:

[0037] When in use, the automatic drainage device for the nitrogen generator's gas storage tank is activated by an external control module at regular intervals. The rotation of the output shaft of the control motor 701 enables the rotation of the first bevel gear 702, which in turn enables the rotation of the second bevel gear 703. The rotation of the second bevel gear 703 then enables the rotation of the valve stem 3, ultimately controlling the valve body 1.

[0038] When it is necessary to manually open the valve body 1, hold the handle 16 and lift it upwards. At this time, the handle 16 will drive the control lever 6 to move inside the control box 4 and outside the valve stem 3. At this time, the fixed plate 9 will also move inside the movable chamber 8. Subsequently, the plug rod 10 will be inserted into the plug groove 11, thus connecting the control lever 6 and the valve stem 3. Then, rotate the handle 16, which will drive the control lever 6 to rotate. With the cooperation of the plug rod 10 and the plug groove 11, the valve stem 3 will rotate synchronously, thereby achieving the purpose of manually opening the valve body 1.

[0039] When the control lever 6 moves vertically, it will drive the rotating ring 12 to move synchronously. The movement of the rotating ring 12 will drive the limiting block 14 to slide inside the limiting groove 13. At the same time, the cooperation between the limiting groove 13 and the limiting block 14 can effectively prevent the rotating ring 12 from rotating. Meanwhile, the spring 15 will also deform. Subsequently, the control lever 6 can be reset by the elastic force of the spring 15 itself, that is, the insertion rod 10 and the insertion groove 11 are separated. When separated, the valve stem 3 cannot be rotated by rotating the handle 16.

[0040] When it is necessary to connect to an external pipeline, the valve body 1 is first connected to the pipeline through the flange at the end of the pipeline. Then, the threaded rod 20 is rotated. The rotation of the threaded rod 20 enables the guide block 21 to slide inside the guide groove 19. The movement of the guide block 21 drives the movement of the sealing half ring 18, ultimately achieving secondary sealing of the gap at the connection by the sealing half ring 18. The sealing gasket 22 will be compressed and deformed.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic drainage device for a nitrogen generator's gas storage tank, comprising a valve body (1), characterized in that: The valve body (1) has a ball (2) inside, and a valve stem (3) is fixedly connected to the surface of the ball (2). A control box (4) is fixedly connected to the upper surface of the valve body (1). A cavity (5) is opened inside the control box (4). The upper end of the valve stem (3) rotates and penetrates into the cavity (5). The upper end of the valve stem (3) rotates and penetrates out of the control box (4). A control rod (6) is movably sleeved on the outside of the valve stem (3). The upper end of the control rod (6) moves and penetrates out of the control box (4). 4) The outer surface is provided with a control component (7), the inside of the control rod (6) is provided with a movable chamber (8), the valve stem (3) is located inside the movable chamber (8) and a fixed plate (9) is fixedly sleeved on one end, the fixed plate (9) is movably disposed inside the movable chamber (8), the bottom wall of the movable chamber (8) is fixedly connected with a plug rod (10), the lower surface of the fixed plate (9) is provided with a plug groove (11), the plug rod (10) and the plug groove (11) are adapted to each other, and the outer surfaces of both ends of the valve body (1) are provided with sealing components.

2. The automatic drainage device for the nitrogen generator storage tank according to claim 1, characterized in that: The control component (7) includes a control motor (701), which is fixedly connected to the outer surface of the control box (4). The output shaft of the control motor (701) rotates through the interior of the cavity (5). The output shaft of the control motor (701) is fixedly connected to a first bevel gear (702). A second bevel gear (703) is fixedly sleeved on the outer surface of one end of the valve stem (3) located inside the cavity (5). The first bevel gear (702) and the second bevel gear (703) mesh with each other.

3. The automatic drainage device for the nitrogen generator's gas storage tank according to claim 1, characterized in that: The lower end of the control rod (6) is fitted with a rotating ring (12). Limiting grooves (13) are opened on both sides of the inner wall of the active chamber (8). Two limiting blocks (14) are fixedly connected to the outer surface of the rotating ring (12). The two limiting blocks (14) are slidably connected to the inside of the two limiting grooves (13).

4. The automatic drainage device for the nitrogen generator's gas storage tank according to claim 3, characterized in that: A spring (15) is fixedly connected between the upper surface of the rotating ring (12) and the top wall of the movable chamber (8), and the spring (15) is movably sleeved on the outside of the control rod (6).

5. The automatic drainage device for the nitrogen generator storage tank according to claim 4, characterized in that: A handle (16) is fixedly connected to the upper outer surface of the control lever (6).

6. The automatic drainage device for the nitrogen generator storage tank according to claim 1, characterized in that: The sealing assembly includes two mounting blocks (17), both of which are fixedly connected to the outer surface of the valve body (1). Guide grooves (19) are provided on the surface of both mounting blocks (17). A drive assembly is provided inside the guide grooves (19), and a sealing half-ring (18) is provided outside the mounting blocks (17).

7. The automatic drainage device for the nitrogen generator storage tank according to claim 6, characterized in that: The drive assembly includes a threaded rod (20), which is rotatably connected inside the guide groove (19). The threaded rod (20) passes through one end of the valve body (1) and extends into the interior of the mounting block (17). A guide block (21) is threadedly fitted on the outer surface of the threaded rod (20). The guide block (21) is slidably connected inside the guide groove (19). The guide block (21) is fixedly connected to the sealing half ring (18).

8. The automatic drainage device for the nitrogen generator storage tank according to claim 7, characterized in that: A sealing gasket (22) is provided on the adjacent side surface of the two sealing half-rings (18).

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