Three-in-one angle valve for liquid fuel storage

Abstract

The utility model relates to the technical field of angle valves, and discloses a three-in-one angle valve for liquid fuel storage, which comprises an angle valve, an air outlet, a fuel channel and a fuel filling and output channel which are communicated with one another are arranged in the angle valve, and a mounting hole, a fuel output hole and a valve plug hole which are communicated with one another are arranged in a fuel tee joint; a sealing valve is mounted at the top in the angle valve, and an air channel is formed in the sealing valve; the valve rod is connected with the air valve plug and the fuel valve plug through connecting pieces, and the fuel valve plug penetrates through the sealing valve and then is located in the valve plug hole; a self-closing valve connector is installed in the normally-closed fixing nut, and an output butt joint is installed in the self-closing valve connector; and the oil filling pipe is communicated with the fuel channel. According to the angle valve, the fuel tee joint, the self-closing valve connector and the sealing valve are arranged in the angle valve, the valve rod is rotated to drive the air valve plug and the fuel valve plug to move synchronously, the problem of operating a plurality of valves and switches is simplified, errors and leakage risks are reduced, and safety and convenience are improved.

Description

Technical Field

[0001] This invention relates to the field of angle valve technology, specifically a three-in-one angle valve for liquid fuel storage. Background Technology

[0002] In recent years, frequent gas explosions have drawn significant attention from relevant departments and enterprises, leading to bans on the use of gas in many locations. Meanwhile, those still using gas are imposing increasingly stringent regulations on gas cylinders. To address this situation, various relatively safe and environmentally friendly alternative liquid fuels have emerged on the market. At the same time, the state has imposed strict safety standards on gas cylinders used to store liquid fuels, requiring them to be pressurized and to ensure safe use. This requirement has spurred gas cylinder manufacturers to continuously improve their technology and standardize production; however, most companies still produce cylinders with similar designs, simply adhering to national standards and lacking innovation.

[0003] Currently available liquid fuel cylinders still have some shortcomings. When in use, liquid fuel cylinders rely entirely on the stove's built-in pump to deliver fuel to the stovetop or burner. The cylinders typically have an air-closing valve to prevent leakage when the volatile liquid generates gas pressure. This air-closing valve is normally closed and only opens automatically when a certain gas pressure is generated. However, this design follows the concept of LPG angle valves, only with a fuel pipe installed at one end inside the valve. This pipe must handle both filling and fuel output, making it incompatible in many situations. While it prevents static electricity, it is not suitable for all types of stoves, especially those with low suction, potentially leading to insufficient fuel supply. Furthermore, the existing design is relatively complex to operate. Users must manually open the air valve or switch located on the top of the cylinder while simultaneously opening the angle valve; otherwise, negative pressure inside the cylinder will prevent fuel extraction. Although the cylinder has a normally closed valve and a manual switch, this operating method is inconvenient for users, causing numerous problems. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides a three-in-one angle valve for liquid fuel storage. Existing designs are cumbersome to operate, cannot adapt to all stove application scenarios, and are prone to negative pressure and insufficient fuel supply during use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a three-in-one angle valve for liquid fuel storage, comprising:

[0006] Angle valve, which has an internally interconnected air outlet, fuel passage and fuel filling and output passage, a fuel tee installed in the middle of the angle valve, the fuel tee having an internally interconnected mounting hole, fuel output hole and valve plug hole, and a sealing valve installed at the top of the angle valve, the sealing valve having an internally open air passage;

[0007] The valve stem is located at the top of the angle valve and is connected to the air valve plug and the fuel valve plug via a connecting piece. The air valve plug is located in the air passage, and the fuel valve plug passes through the sealing valve and is located in the valve plug hole.

[0008] A normally closed fixing nut is installed in the fuel filling and output channel, and a self-closing valve connector is installed inside the self-closing valve connector, and an output connector is installed inside the self-closing valve connector.

[0009] The refueling pipe has an air vent at its upper part and an inner tube inside. The refueling pipe is connected to the fuel passage, and the inner tube is connected to the mounting hole.

[0010] Preferably, a filter is installed at the bottom of the inner tube.

[0011] Preferably, a handwheel is connected to the top of the valve stem, a valve cap is installed on the outside of the angle valve, a valve stem spring is installed on the top of the outer wall of the valve stem, and a pressure cap is installed on the top of the handwheel.

[0012] Preferably, an air valve plug spring is installed on the outer wall of the air valve plug, the air valve plug spring is located in the air passage, a valve plug sealing ring is fixedly connected to the lower middle part of the outer wall of the fuel valve plug, and a fuel valve plug spring is provided at the bottom of the outer wall of the fuel valve plug, the fuel valve plug spring is located in the valve plug hole.

[0013] Preferably, the connecting piece is located at the bottom of the valve stem, and a movable valve stem is connected to the bottom surface of the connecting piece. The outer wall of the movable valve stem is provided with threads, and a fixing ring is threadedly connected to the outer wall of the movable valve stem. The fixing ring is located at the inner bottom of the angle valve. A movable mediator is rotatably connected to the bottom surface of the movable valve stem, and the fuel valve plug and the air valve plug are respectively fixedly connected to the center and both sides of the bottom surface of the movable mediator.

[0014] Preferably, the top of the refueling pipe has an air connection hole and a through hole in the middle, the inner pipe is located in the through hole, the top of the inner part of the refueling pipe is equipped with an anti-tamper seat, the inside of the anti-tamper seat is equipped with a spring post, and the spring post penetrates the refueling pipe.

[0015] Preferably, a fuel inner pipe connector is installed at the bottom of the fuel tee, and the bottom of the fuel inner pipe connector penetrates the middle of the anti-tamper seat.

[0016] Preferably, the normally closed fixing nut and the angle valve are sealed together with the self-closing valve connector and the normally closed fixing nut by a sealing element. The outer wall of the output connector and the self-closing valve connector are sealed by a self-closing valve sealing ring. A self-closing valve spring is provided on one side of the self-closing valve connector, and the self-closing valve spring is in contact with the inside of the angle valve.

[0017] Preferably, a sealing valve moving valve core is provided below the moving medium, the fuel valve plug passes through the middle of the sealing valve moving valve core, the bottom of the sealing valve moving valve core is fitted with the outer wall of the valve plug hole, a sealing valve nut is installed at the bottom of the inner wall of the air passage, a sealing valve spring is fitted at the top of the outer wall of the fuel tee, and a second sealing element is provided at the top of the fuel tee, between the sealing valve nut and the air passage, and at the middle of the outer wall of the sealing valve moving valve core.

[0018] This invention provides a three-in-one angle valve for liquid fuel storage. It has the following advantages:

[0019] 1. This invention simplifies the problem of requiring separate operation of multiple valves and switches in existing technologies by incorporating a fuel tee, a self-closing valve connector, and a sealing valve inside the angle valve. Rotating the handwheel drives the valve stem, causing the air valve plug and fuel valve plug to move together, simultaneously opening and closing the fuel and air passages. In practical use, users only need to rotate the handwheel to control the fuel and air supply, avoiding the complex operation of simultaneously manually opening the air valve and switch to prevent negative pressure inside the cylinder. This reduces operational errors and the risk of fuel leakage, improving safety and convenience.

[0020] 2. This invention effectively solves the problem in the prior art that the cylinder cannot be completely sealed when not in use by installing a self-closing valve sealing ring on the outside of the output connector, combined with the normally closed fixing nut of the self-closing valve connector and the sealing element one. This ensures the sealing of the cylinder when it is stored and not in use, thereby avoiding fuel leakage caused by improper operation and improving safety during use.

[0021] 3. By setting up fuel channels and fuel filling and output channels separately inside the angle valve, this invention ensures that fuel filling and fuel output can be used independently, preventing poor fuel flow and limitations in application scenarios. It also ensures the flow rate and static electricity generation of the cylinder during fuel filling, thereby avoiding the problem of untimely fuel supply in application scenarios and improving the user experience.

[0022] 4. This invention extends the output inner tube to the bottom inside the angle valve and sets a filter at the bottom of the inner tube, allowing users to filter out fuel impurities when drawing fuel directly from the bottom of the cylinder during use. This solves the problems of excessive fuel residue in the cylinder and oil pump blockage or damage caused by fuel transportation or impurities in the prior art. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the refueling pipe section of the present invention;

[0025] Figure 3 This is a front sectional view of the refueling pipe of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of the angle valve of the present invention;

[0027] Figure 5 This is a front sectional view of the angle valve of the present invention;

[0028] Figure 6 This is a front sectional view of the self-closing valve spring of the present invention;

[0029] Figure 7 This is a front sectional view of the sealing valve of the present invention;

[0030] Figure 8 This is a front sectional view of the sealing valve nut of the present invention.

[0031] The components are as follows: 1. Handwheel; 2. Valve cap; 3. Angle valve; 4. Filler hose; 5. Spring post; 6. Valve stem; 7. Connecting piece; 8. Moving plate; 9. Sealing valve; 10. Normally closed fixing nut; 11. Moving valve stem; 12. Fuel valve plug; 13. Air valve plug; 14. Output connector; 15. Self-closing valve connector; 16. Fuel inner pipe connector; 17. Anti-tamper seat; 18. Inner pipe; 19. Valve plug sealing ring; 20. Fuel valve plug spring; 21. Self-closing valve sealing ring; 22. Self-closing valve... 23. Valve spring; 24. Air valve plug spring; 25. Valve stem spring; 26. Pressure cap; 27. Seal 1; 28. Air outlet; 29. ​​Fuel passage; 30. Fuel filling and output passage; 31. Air passage; 32. Fuel tee; 33. Mounting hole; 34. Fuel output hole; 35. Valve plug hole; 36. Air connection hole; 37. Filter; 38. Retaining ring; 39. Sealing valve nut; 40. Sealing valve moving valve core; 41. Seal 2; 42. Sealing valve spring. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] To better understand the present invention, the above content will be described in detail below with reference to specific embodiments.

[0034] Example 1: Please refer to the appendix Figure 1 - Appendix Figure 7 This invention provides a three-in-one angle valve for liquid fuel storage, comprising: an angle valve 3, which has an interconnected air outlet 27, a fuel passage 28, and a fuel filling and output passage 29; a fuel tee 31 installed in the middle of the angle valve 3, which has an interconnected mounting hole 32, a fuel output hole 33, and a valve plug hole 34; a sealing valve 9 installed at the top of the angle valve 3, which has an air passage 30 inside; and a valve stem 6 located at the top of the angle valve 3 and connected by a connecting piece. 7 is connected to the air valve plug 13 and the fuel valve plug 12. The air valve plug 13 is located in the air passage 30, and the fuel valve plug 12 passes through the sealing valve 9 and is located in the valve plug hole 34. The normally closed fixing nut 10 is installed in the fuel filling and output passage 29, and a self-closing valve connector 15 is installed inside it. An output connector 14 is installed inside the self-closing valve connector 15. The refueling pipe 4 has an air passage at the top and an inner tube 18 inside it. The refueling pipe 4 communicates with the fuel passage 28, and the inner tube 18 communicates with the mounting hole 32. A filter 36 is installed at the bottom of the inner tube 18. The top of the valve stem 6 is connected to the handwheel 1. The angle valve 3 is equipped with a valve cap 2, and the top of the outer wall of the valve stem 6 is equipped with a valve stem spring 24. The top of the handwheel 1 is equipped with a pressure cap 25.

[0035] In this embodiment, since both the air valve plug 13 and the fuel valve plug 12 are installed on the bottom surface of the movable mediator 8, when the valve stem 6 moves down, it will squeeze the connecting piece 7 and thus squeeze the movable mediator 8 down. At this time, the air valve plug 13 blocks the air passage 30, and the fuel valve plug 12 enters the valve plug hole 34 to block the mounting hole 32. At this time, the cylinder is in a closed state, that is, the fuel cannot be discharged from the cylinder. When the valve stem 6 moves up, the air valve plug 13 moves out of the air passage 30, and the fuel valve plug 12 moves out of the mounting hole 32. At this time, the fuel in the cylinder can be discharged from the cylinder, or fuel can be added to the cylinder. Therefore, in actual use, the user only needs to rotate the handwheel 1 to control the switch of fuel and air, avoiding the complicated operation of manually opening the air valve and the switch at the same time to prevent negative pressure inside the cylinder, reducing the risk of operation error and fuel leakage, and improving safety and convenience.

[0036] An air valve plug spring 23 is installed on the outer wall of the air valve plug 13. The air valve plug spring 23 is located in the air passage 30. A valve plug sealing ring 19 is fixedly connected to the lower middle part of the outer wall of the fuel valve plug 12. A fuel valve plug spring 20 is provided at the bottom of the outer wall of the fuel valve plug 12. The fuel valve plug spring 20 is located in the valve plug hole 34.

[0037] In this embodiment, after the air valve plug 13 moves down, it will compress the air valve plug spring 23, and after the fuel valve plug 12 moves down, it will compress the fuel valve plug spring 20. Therefore, when the moving medium 8 moves up, the elastic force of the air valve plug spring 23 and the fuel valve plug spring 20 will lift the air valve plug 13 and the fuel valve plug 12 respectively, thereby helping them to reset.

[0038] The connecting piece 7 is located at the bottom of the valve stem 6. The bottom surface of the connecting piece 7 is connected to the movable valve stem 11. The outer wall of the movable valve stem 11 is provided with threads. The outer wall of the movable valve stem 11 is threaded with a fixing ring 37. The fixing ring 37 is located at the inner bottom of the angle valve 3. The bottom surface of the movable valve stem 11 is rotatably connected to the movable mediator 8. The fuel valve plug 12 and the air valve plug 13 are respectively fixedly connected to the center and both sides of the bottom surface of the movable mediator 8.

[0039] In this embodiment, after the handwheel 1 drives the valve stem 6 to rotate, the valve stem 6 will move up or down while rotating due to the setting of the screw threads. When the valve stem 6 moves down, it drives the connecting piece 7, the moving valve stem 11 and the moving medial 8 to move down, and finally drives the fuel valve plug 12 and the air valve plug 13 to move down. At this time, the fuel valve plug spring 20 and the air valve plug spring 23 can be compressed.

[0040] The fuel filler pipe 4 has an air connection hole 35 at the top and a through hole in the middle. The inner pipe 18 is located inside the through hole. An anti-tamper seat 17 is installed at the top of the inner part of the fuel filler pipe 4. A spring post 5 is installed inside the anti-tamper seat 17 and passes through the fuel filler pipe 4. A fuel inner pipe connector 16 is installed at the bottom of the fuel tee 31, and the bottom of the fuel inner pipe connector 16 passes through the middle of the anti-tamper seat 17.

[0041] In this embodiment, by installing a spring post 5 inside the anti-tamper seat 17, and the spring post 5 passing through the refueling pipe 4, the anti-tamper seat 17 can be firmly locked inside the steel cylinder, thereby achieving the purpose of anti-tampering.

[0042] The normally closed fixing nut 10 and the angle valve 3 are sealed with a seal 26 between the self-closing valve connector 15 and the normally closed fixing nut 10. The outer wall of the output connector 14 and the self-closing valve connector 15 are sealed with a self-closing valve sealing ring 21. A self-closing valve spring 22 is provided on one side of the self-closing valve connector 15, and the self-closing valve spring 22 is in contact with the inside of the angle valve 3.

[0043] In this embodiment, the sealing effect between the inner wall of the angle valve 3 and the normally closed fixing nut 10 can be ensured by the sealing element 26, which can prevent fuel leakage. The sealing ring 21 of the self-closing valve can ensure the sealing between the output connector 14 and the self-closing valve connector 15. With the cooperation of the self-closing valve spring 22, it can be ensured that it automatically seals when no fuel is being filled, preventing fuel or gas leakage.

[0044] Working principle: When in use, rotating the handwheel 1 clockwise causes the valve stem 6 to rotate clockwise. At this time, the valve stem 6 drives the connecting piece 7, the moving valve stem 11, and the moving mediator 8 to move downward. At the same time, the moving mediator 8 pushes the fuel valve plug 12 to compress the fuel valve plug spring 20, and the air valve plug 13 to compress the air valve plug spring 23. The fuel valve plug 12 blocks the valve plug hole 34, and the air valve plug 13 blocks the air passage 30. Therefore, the mounting hole 32 and the air passage 30 are in a closed state. When the valve stem 6 is loosened counterclockwise, the connecting piece 7 drives the moving valve stem 11 to rotate upward. At this time, the fuel valve plug spring 20 and the air valve plug spring 23 will rebound, thereby opening the fuel valve plug 12, the air valve plug 13 and the moving medium 8. Then the fuel valve plug 12 will move away from the mounting hole 32, so that the mounting hole 32 is connected to the fuel output hole 33, while the air valve plug 13 is moved away from the air passage 30. Since the fuel passage 28, the fuel filling and output passage 29, the air passage 30 and the air outlet 27 are connected to each other at this time, the air outlet 27 is connected to the inside of the cylinder. At this time, fuel can enter or exit the cylinder.

[0045] After the fuel filling and output channel 29 and the fuel output port 33 are connected, the fuel in the cylinder is discharged sequentially through the filter 36, inner tube 18, fuel inner tube connector 16, mounting hole 32, fuel output port 33 and fuel filling and output channel 29. At this time, the fuel can be output to the stove through the output connector 14, self-closing valve connector 15 and normally closed fixing nut 10. At the same time, the air in the cylinder can be discharged and entered to prevent negative pressure and vapor from being generated. Thus, the fuel channel 28 and the air channel 30 are in the open state. When the use is over, the handwheel 1 is rotated clockwise to drive the valve stem 6 to rotate clockwise, so that the fuel valve plug 12 blocks the valve plug hole 34 and the air valve plug 13 blocks the air channel 30. At this time, the cylinder can be closed and the fuel output can be stopped.

[0046] Example 2: Please refer to the appendix Figure 8 A sealing valve moving valve core 39 is provided below the moving medium 8. The fuel valve plug 12 passes through the middle of the sealing valve moving valve core 39. The bottom of the sealing valve moving valve core 39 is fitted with the outer wall of the valve plug hole 34. A sealing valve nut 38 is installed at the bottom of the inner wall of the air passage 30. A sealing valve spring 41 is fitted at the top of the outer wall of the fuel tee 31. Sealing element 2 40 is provided at the top of the fuel tee 31, between the sealing valve nut 38 and the air passage 30, and at the middle of the outer wall of the sealing valve moving valve core 39.

[0047] In this embodiment, based on embodiment 1, the sealing valve 9 is replaced with the sealing valve moving valve core 39. When the moving medium 8 moves down, the middle part of the bottom of the sealing valve moving valve core 39 will contact the outer wall of the valve plug hole 34 at the top of the fuel tee 31. At this time, the second seal 40 at the top of the valve plug hole 34 will be squeezed, so the sealing valve moving valve core 39 and the valve plug hole 34 will be in a sealed state. At the same time, the second seal 40 on the outer wall of the sealing valve moving valve core 39 will also contact the sealing valve nut 38. At this time, the sealing valve moving valve core 39 and the sealing valve nut 38 will also be in a sealed state. At this time, the sealing valve spring 41 will also be compressed, and the fuel valve plug 12 will seal the mounting hole 32. When the moving medium 8 moves up, the sealing valve spring 41 will push the sealing valve moving valve core 39 up, and the fuel valve plug 12 will move out of the valve plug hole 34.

[0048] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-in-one angle valve for liquid fuel storage, characterized in that, include: Angle valve (3) has an interconnected air outlet (27), fuel passage (28) and fuel filling and output passage (29) inside. A fuel tee (31) is installed in the middle of the angle valve (3). The fuel tee (31) has an interconnected mounting hole (32), fuel output hole (33) and valve plug hole (34) inside. A sealing valve (9) is installed at the top inside the angle valve (3). An air passage (30) is opened inside the sealing valve (9). The valve stem (6) is located at the top inside the angle valve (3) and is connected to the air valve plug (13) and the fuel valve plug (12) via the connecting piece (7). The air valve plug (13) is located in the air passage (30), and the fuel valve plug (12) passes through the sealing valve (9) and is located in the valve plug hole (34). A normally closed fixing nut (10) is installed in the fuel filling and output channel (29) and has a self-closing valve connector (15) installed inside, and an output connector (14) is installed inside the self-closing valve connector (15). The refueling pipe (4) has an air passage at its upper part and an inner tube (18) inside it. The refueling pipe (4) is connected to the fuel passage (28), and the inner tube (18) is connected to the mounting hole (32).

2. The three-in-one angle valve for liquid fuel storage according to claim 1, characterized in that, A filter (36) is installed at the bottom of the inner tube (18).

3. The three-in-one angle valve for liquid fuel storage according to claim 1, characterized in that, A handwheel (1) is connected to the top of the valve stem (6), a valve cap (2) is installed on the outside of the angle valve (3), a valve stem spring (24) is installed on the top of the outer wall of the valve stem (6), and a pressure cap (25) is installed on the top of the handwheel (1).

4. A three-in-one angle valve for liquid fuel storage according to claim 1, characterized in that, An air valve plug spring (23) is installed on the outer wall of the air valve plug (13). The air valve plug spring (23) is located in the air passage (30). A valve plug sealing ring (19) is fixedly connected to the lower middle part of the outer wall of the fuel valve plug (12). A fuel valve plug spring (20) is provided at the bottom of the outer wall of the fuel valve plug (12). The fuel valve plug spring (20) is located in the valve plug hole (34).

5. A three-in-one angle valve for liquid fuel storage according to claim 1, characterized in that, The connecting piece (7) is located at the bottom of the valve stem (6). The bottom surface of the connecting piece (7) is connected to the movable valve stem (11). The outer wall of the movable valve stem (11) is provided with threads. The outer wall of the movable valve stem (11) is threaded with a fixing ring (37). The fixing ring (37) is located at the inner bottom of the angle valve (3). The bottom surface of the movable valve stem (11) is rotatably connected to the movable mediator (8). The fuel valve plug (12) and the air valve plug (13) are respectively fixedly connected to the center and both sides of the bottom surface of the movable mediator (8).

6. A three-in-one angle valve for liquid fuel storage according to claim 5, characterized in that, The top of the refueling pipe (4) has an air connection hole (35) and a through hole in the middle. The inner pipe (18) is located inside the through hole. An anti-disassembly seat (17) is installed on the top of the inner part of the refueling pipe (4). A spring post (5) is installed inside the anti-disassembly seat (17), and the spring post (5) penetrates the refueling pipe (4).

7. A three-in-one angle valve for liquid fuel storage according to claim 6, characterized in that, The bottom of the fuel tee (31) is equipped with a fuel inner pipe connector (16), and the bottom of the fuel inner pipe connector (16) penetrates the middle of the anti-disassembly seat (17).

8. A three-in-one angle valve for liquid fuel storage according to claim 1, characterized in that, The normally closed fixing nut (10) and the angle valve (3) are sealed with the self-closing valve connector (15) and the normally closed fixing nut (10) by a sealing element (26). The outer wall of the output connector (14) and the self-closing valve connector (15) are sealed by a self-closing valve sealing ring (21). A self-closing valve spring (22) is provided on one side of the self-closing valve connector (15), and the self-closing valve spring (22) is in contact with the inside of the angle valve (3).

9. A three-in-one angle valve for liquid fuel storage according to claim 7, characterized in that, A sealing valve moving valve core (39) is provided below the moving medium (8). The fuel valve plug (12) penetrates the middle of the sealing valve moving valve core (39). The bottom of the sealing valve moving valve core (39) is fitted with the outer wall of the valve plug hole (34). The bottom of the inner wall of the air passage (30) is installed with a sealing valve nut (38). The top of the outer wall of the fuel tee (31) is fitted with a sealing valve spring (41). A second sealing element (40) is provided at the top of the fuel tee (31), between the sealing valve nut (38) and the air passage (30), and at the middle of the outer wall of the sealing valve moving valve core (39).

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