Filling valve and liquid oxygen supply device

Abstract

The utility model discloses a filling valve and a liquid oxygen supply device, the filling valve is used for filling liquid oxygen to the liquid oxygen supply device, the filling valve is connected to the outer side of the liquid oxygen supply device, the filling valve comprises a filling assembly and a connecting assembly, one end of the connecting assembly is connected with the filling assembly, and the other end of the connecting assembly is connected with the liquid oxygen supply device. The filling valve is connected to the outer side of the liquid oxygen supply device, so that the capacity of the liquid oxygen supply device is improved, heat exchange can be carried out between the filling valve and the outside in the liquid oxygen filling process, frost condensed on the filling valve is rapidly melted, and the service life of the filling valve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of oxygen supply technology, and in particular to a filling valve and a liquid oxygen supply device. Background Technology

[0002] As altitude increases on plateaus, the oxygen content in the air decreases accordingly. For example, the average altitude of the Qinghai-Tibet Plateau is over 4,000 meters, where the air is thin and the air pressure is low, which cannot meet the normal oxygen supply needs of the human body, leading to hypoxia, causing multiple organ dysfunction, and even endangering life.

[0003] Especially when working in the field, the increased physical exertion leads to greater oxygen consumption, exacerbating altitude sickness, causing a significant decline in physical strength and difficulty breathing. Altitude sickness and other illnesses can cause varying degrees of harm to the body, and severe hypoxia can even lead to death.

[0004] Currently, the main oxygen supply devices on the market use gaseous oxygen bags or air concentrators. The drawbacks of these two methods are that they occupy a large space, have a small oxygen capacity, require an external power source, and are inconvenient to carry for extended periods in the field. Liquid oxygen generators can meet the needs for portability and large capacity.

[0005] However, the filling valve of existing liquid oxygen supply units is often located inside the tank of the liquid oxygen supply unit. This not only results in a low liquid oxygen capacity of the liquid oxygen supply unit, but also the fact that the filling valve is too close to the tank of the liquid oxygen supply unit can cause frost to condense on the filling valve during the filling process, reducing the service life of the filling valve. Utility Model Content

[0006] The purpose of this invention is to provide a filling valve and a liquid oxygen supply device, which aims to solve the problems of low capacity and frost formation on the filling valve of existing liquid oxygen supply devices during the filling process.

[0007] To solve the above-mentioned technical problems, the purpose of this utility model is achieved through the following technical solution: a filling valve for filling liquid oxygen into a liquid oxygen supply unit, the filling valve being connected to the outside of the liquid oxygen supply unit, comprising: a filling component and a connecting component, one end of the connecting component being connected to the filling component and the other end being connected to the liquid oxygen supply unit.

[0008] Furthermore, the liquid oxygen supply unit is provided with a connecting part, the connecting assembly including: a threaded sleeve and a locking member, one end of the threaded sleeve is provided with a fitting part and the other end is provided with a threaded part, the fitting part is fitted onto the filling assembly, and the connecting part is connected to the threaded part; the locking member is rotatably fitted onto the threaded part and located outside the connecting part to abut against the connecting part.

[0009] Furthermore, the threaded portion is provided with a connecting hole that extends through the longitudinal direction of the threaded portion. One end of the connecting hole is connected to the filling assembly, and the other end is connected to the liquid oxygen supply unit.

[0010] Furthermore, the liquid oxygen supply unit is connected to the filling valve via a filling pipe. The connection assembly also includes a connecting member, one end of which is sleeved on the threaded portion away from the sleeved portion and connected to the connecting hole, and the other end of which is connected to the filling pipe.

[0011] Furthermore, the threaded sleeve is provided with a fastening hole, and the connecting assembly further includes a fastener, which passes through the fastening hole and abuts against the filling assembly.

[0012] Furthermore, the connection assembly also includes a sealing gasket disposed between the sleeve portion and the filling assembly.

[0013] Furthermore, the filling assembly includes: a valve body, a guide member, a slide rod, a seal member, and an elastic member. The valve body has an internal mounting cavity that communicates with the connecting assembly. The guide member is located at one end of the mounting cavity near the connecting assembly and has a guide hole communicating with the connecting assembly. The slide rod is located within the mounting cavity, and one end of the slide rod is movably inserted into the guide hole. The seal member is sleeved on the other end of the slide rod and abuts against the valve body. The elastic member is sleeved on the slide rod in a compressed state, with one end connected to the slide rod and the other end connected to the guide member.

[0014] Furthermore, the valve body is provided with two abutment portions, which are inclined in a direction away from the slide rod, and the sealing element abuts against the two abutment portions respectively.

[0015] Furthermore, the liquid oxygen supply unit is filled by connecting to a filling valve through a filling device. A locking ring is provided at the end of the mounting cavity away from the slide rod, and the locking ring is detachably connected to the filling device.

[0016] This utility model also provides a liquid oxygen supply device, including a liquid oxygen supply device body, a filling pipe and a filling valve as described above, wherein the filling valve is connected to the outside of the liquid oxygen supply device body, and the filling pipe is connected to the liquid oxygen supply device body and the filling valve respectively.

[0017] This utility model provides a filling valve and a liquid oxygen supply unit. The filling valve is used to fill liquid oxygen into the liquid oxygen supply unit and is connected to the outside of the liquid oxygen supply unit. It includes a filling assembly and a connecting assembly, with one end of the connecting assembly connected to the filling assembly and the other end connected to the liquid oxygen supply unit. By connecting the filling valve to the outside of the liquid oxygen supply unit, this utility model not only increases the capacity of the liquid oxygen supply unit but also allows for heat exchange between the filling valve and the external environment during the liquid oxygen filling process, causing the frost condensed on the filling valve to melt quickly and increasing the service life of the filling valve. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A first-view structural schematic diagram of the filling valve provided in an embodiment of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the filling valve from a second perspective, provided for an embodiment of the present utility model.

[0021] Figure 3 A structural schematic diagram of the filling valve from a third-view perspective provided in an embodiment of this utility model;

[0022] Figure 4 A structural schematic diagram of the filling valve from a fourth perspective provided in an embodiment of this utility model;

[0023] Figure 5 A structural schematic diagram of the filling valve from a fifth perspective provided in an embodiment of this utility model;

[0024] Figure 6 A sixth-view structural schematic diagram of the filling valve provided in an embodiment of this utility model;

[0025] Figure 7 A structural schematic diagram of the filling valve from a seventh perspective provided for an embodiment of this utility model;

[0026] Figure 8 Cross-sectional view AA provided for embodiments of this utility model;

[0027] Figure 9 This is a structural schematic diagram of the threaded sleeve from a first-view perspective, provided for an embodiment of the present utility model.

[0028] Figure 10 This is a structural schematic diagram of the threaded sleeve from a second perspective, provided in an embodiment of the present utility model.

[0029] Figure 11 Exploded view of the filling valve provided in the embodiment of this utility model;

[0030] Figure 12 A first-view structural schematic diagram of a liquid oxygen supply device provided in an embodiment of this utility model;

[0031] Figure 13 A schematic diagram of the liquid oxygen supply device provided in the embodiment of this utility model from a second perspective;

[0032] Figure 14 This is a structural schematic diagram of a liquid oxygen supply device provided in an embodiment of the present invention from a third-view perspective.

[0033] Explanation of the markings in the image:

[0034] 1. Filling assembly; 11. Valve body; 111. Mounting cavity; 112. Abutment part; 113. Locking ring; 12. Guide member; 121. Guide hole; 13. Slide rod; 14. Seal; 15. Elastic member;

[0035] 2. Connecting assembly; 21. Threaded sleeve; 211. Sleeve part; 212. Threaded part; 213. Connecting hole; 214. Fastening hole; 22. Locking element; 23. Connecting element; 24. Fastener; 25. Sealing gasket;

[0036] 3. Connecting parts;

[0037] 10. Liquid oxygen supply unit body;

[0038] 20. Filling tube;

[0039] 30. Filling valve. Detailed Implementation

[0040] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0042] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0043] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0044] Combination Figure 1-11 As shown, this utility model provides a filling valve 30 for filling liquid oxygen into a liquid oxygen supply unit. The filling valve 30 is connected to the outside of the liquid oxygen supply unit and includes: a filling component 1 and a connecting component 2. One end of the connecting component 2 is connected to the filling component 1 and the other end is connected to the liquid oxygen supply unit.

[0045] In this embodiment of the present invention, the filling valve 30 is connected to the outside of the liquid oxygen supply unit by the connecting component 2, which not only increases the capacity of the liquid oxygen supply unit, but also allows the filling valve 30 to exchange heat with the outside environment during the liquid oxygen filling process, so that the frost condensed on the filling valve 30 melts quickly and increases the service life of the filling valve 30.

[0046] Understandably, this is for the sake of clarity. Figure 1-3 This is a schematic diagram of the filling valve 30 with the connecting part 3. Figure 4-6 This is a schematic diagram of the filling valve 30 without the connecting part 3.

[0047] In some embodiments, the liquid oxygen supply unit is provided with a connecting part 3. The connecting assembly 2 includes a threaded sleeve 21 and a locking member 22. One end of the threaded sleeve 21 is provided with a fitting part 211 and the other end is provided with a threaded part 212. The fitting part 211 is fitted onto the filling assembly 1, and the connecting part 3 is connected to the threaded part 212. The locking member 22 is rotatably fitted onto the threaded part 212 and located outside the connecting part 3 to abut against the connecting part 3.

[0048] In this embodiment, the filling valve 30 is securely connected to the liquid oxygen supply unit by the connecting part 3 and the threaded sleeve 21, with the locking member 22 abutting against the connecting part 3, ensuring a stable connection of the liquid oxygen supply unit during the filling process. The sleeve part 211 is sleeved on the filling assembly 1, making it easy to disassemble and replace the filling assembly 1 and the connecting assembly 2.

[0049] In some embodiments, a connecting hole 213 is provided in the threaded portion 212, which extends through the longitudinal direction of the threaded portion 212. One end of the connecting hole 213 is connected to the filling component 1, and the other end is connected to the liquid oxygen supply device.

[0050] In this embodiment, the connection hole 213 is used to connect the filling assembly 1 and the liquid oxygen supply unit, ensuring that liquid oxygen enters the liquid oxygen supply unit from the filling assembly 1 through the connection hole 213, which helps the liquid oxygen supply unit to supply oxygen smoothly.

[0051] In some embodiments, the liquid oxygen supply unit is connected to the filling valve 30 via the filling pipe 20. The connecting assembly 2 further includes a connecting member 23, one end of which is sleeved on the threaded portion 212 away from the sleeved portion 211 and connected to the connecting hole 213, and the other end is connected to the filling pipe 20.

[0052] In this embodiment, the path of liquid oxygen flowing into the liquid oxygen supply unit can be lengthened through the filling pipe 20, so that the connection position between the filling valve 30 and the liquid oxygen supply unit is not restricted. Moreover, in a specific embodiment, the filling pipe 20 is a filling bend pipe, which is bent from top to bottom. Liquid oxygen enters the filling pipe 20 from the top and enters the liquid oxygen supply unit from the bottom. The resulting height difference can prevent the cryogenic liquid oxygen in the tank from flowing back into the filling valve 30, which has a protective effect on the sealing stability of the filling valve 30.

[0053] In some embodiments, the threaded sleeve 21 is provided with a fastening hole 214, and the connecting component 2 further includes a fastener 24, which passes through the fastening hole 214 and abuts against the filling component 1.

[0054] In this embodiment, the fastener 24 is used to ensure the stability of the connection between the filling component 1 and the connecting component 2. Specifically, the fastening hole 214 is a threaded hole, and the fastener 24 is a screw. The fastener 24 is detachably connected in the fastening hole 214 and abuts against the filling component 1, which facilitates the disassembly and replacement of the filling component 1 and the connecting component 2.

[0055] In some embodiments, the connecting assembly 2 further includes a sealing gasket 25 disposed between the sleeve portion 211 and the filling assembly 1.

[0056] In this embodiment, the sealing gasket 25 is used to protect the seal between the sleeve portion 211 and the filling assembly 1, and to prevent liquid oxygen from leaking out during the filling process when passing through the connecting assembly 2.

[0057] In some embodiments, the filling assembly 1 includes: a valve body 11, a guide 12, a slide rod 13, a seal 14, and an elastic member 15. The valve body 11 has an installation cavity 111 inside, which communicates with the connecting assembly 2. The guide 12 is disposed at one end of the installation cavity 111 near the connecting assembly 2, and the guide 12 has a guide hole 121 communicating with the connecting assembly 2. The slide rod 13 is disposed in the installation cavity 111, and one end of the slide rod 13 is movably inserted into the guide hole 121. The seal 14 is sleeved on the other end of the slide rod 13 and abuts against the valve body 11. The elastic member 15 is sleeved on the slide rod 13 in a compressed state, and one end of the elastic member 15 is connected to the slide rod 13, and the other end is connected to the guide 12.

[0058] In this embodiment, during the filling of the liquid oxygen supply unit, the slide rod 13 moves along the guide hole 121 of the guide member 12 towards the connecting assembly 2, causing the sealing member 14 to move away from the inner wall of the valve body 11, and further compressing the elastic member 15. Liquid oxygen flows into the connecting assembly 2 through the mounting cavity 111, and then into the liquid oxygen supply unit through the connecting assembly 2. After filling is completed, the elastic member 15 rebounds and resets, causing the slide rod 13 to reset, thereby causing the sealing member 14 to abut against the inner wall of the valve body 11, preventing the liquid oxygen in the liquid oxygen supply unit from flowing back. Specifically, the elastic member 15 is a spring, which has stable rebound and low cost.

[0059] In some embodiments, the valve body 11 is provided with two abutment portions 112, which are inclined in a direction away from the slide rod 13, and the seal 14 abuts against the two abutment portions 112 respectively.

[0060] In this embodiment, the two abutment portions 112 are inclined to form a relatively narrow channel relative to the entire mounting cavity 111. The sealing member 14 abuts against the two abutment portions 112 to seal the channel. Moreover, in the non-filled state, the pressure inside the liquid oxygen supply unit and the pressure of the elastic member 15 can hold the sealing member 14 to complete the sealing of the mounting cavity 111. Specifically, the sealing member 14 is annular and sleeved on the slide rod 13. The outer side of the sealing member 14 is inclined, and the inclination angle of the outer side corresponds to the inclination angle of the abutment portion 112, so that the sealing member 14 has a better sealing effect.

[0061] In some embodiments, the liquid oxygen supply unit is filled by connecting to the filling valve 30 via a filling device (not shown). A locking ring 113 is provided at the end of the mounting cavity 111 away from the slide bar 13, and the locking ring 113 is detachably connected to the filling device.

[0062] In this embodiment, the locking ring 113 is used to fix the filling device, ensuring the stability of the filling process and effectively preventing the filling device from detaching from the filling valve 30.

[0063] Combination Figure 12-14 As shown, this utility model also provides a liquid oxygen supply device, including a liquid oxygen supply device body 10, a filling pipe 20 and a filling valve 30 as described above. The filling valve 30 is connected to the outside of the liquid oxygen supply device body 10, and the filling pipe 20 is connected to the liquid oxygen supply device body 10 and the filling valve 30 respectively.

[0064] In this embodiment of the utility model, by connecting the filling valve 30 to the outside of the liquid oxygen supply unit, not only is the capacity of the liquid oxygen supply unit increased, but also during the liquid oxygen filling process, the filling valve 30 can exchange heat with the outside environment, which allows the frost condensed on the filling valve 30 to melt quickly and increases the service life of the filling valve 30.

[0065] Understandably, this is for the sake of clarity. Figure 12 A schematic diagram of a liquid oxygen supply unit with a housing containing a filling valve 30. Figure 13-14 This is a schematic diagram of a liquid oxygen supply unit without a housing containing the filling valve 30.

[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A filling valve for filling liquid oxygen into a liquid oxygen supply unit, characterized in that, The filling valve is connected to the outside of the liquid oxygen supply unit and includes: Filling components; A connecting component, one end of which is connected to the filling component and the other end of which is connected to the liquid oxygen supply unit; The liquid oxygen supply unit is provided with a connection part, and the connection assembly includes: A threaded sleeve, wherein one end of the threaded sleeve is provided with a fitting portion and the other end is provided with a threaded portion, the fitting portion is fitted onto the filling assembly, and the connecting portion is connected to the threaded portion; A locking member is rotatably fitted onto the threaded portion and located outside the connecting portion to abut against the connecting portion.

2. The filling valve according to claim 1, characterized in that, The threaded portion is provided with a connecting hole that extends through the longitudinal direction of the threaded portion. One end of the connecting hole is connected to the filling assembly, and the other end is connected to the liquid oxygen supply unit.

3. The filling valve according to claim 2, characterized in that, The liquid oxygen supply unit is connected to the filling valve via a filling pipe, and the connection assembly further includes: A connecting member, one end of which is sleeved on the threaded portion away from the sleeved portion and connected to the connecting hole, and the other end of which is connected to the filling tube.

4. The filling valve according to claim 1, characterized in that, The threaded sleeve is provided with a fastening hole, and the connecting assembly further includes: A fastener that passes through the fastening hole and abuts against the filling assembly.

5. The filling valve according to claim 1, characterized in that, The connection component also includes: A sealing gasket is disposed between the sleeve portion and the filling assembly.

6. The filling valve according to claim 1, characterized in that, The filling assembly includes: The valve body has an internal mounting cavity that communicates with the connecting assembly. A guide member is disposed at one end of the mounting cavity near the connecting assembly, and the guide member is provided with a guide hole communicating with the connecting assembly; A slide rod is disposed within the mounting cavity, and one end of the slide rod is movably inserted into the guide hole; A sealing element, which is sleeved on the other end of the slide rod and abuts against the valve body; An elastic element is sleeved on the slide rod in a compressed state, with one end of the elastic element connected to the slide rod and the other end connected to the guide element.

7. The filling valve according to claim 6, characterized in that, The valve body is provided with two abutment parts, which are inclined in a direction away from the slide rod, and the sealing element abuts against the two abutment parts respectively.

8. The filling valve according to claim 7, characterized in that, The liquid oxygen supply unit is filled by connecting to the filling valve through the filling device. A locking ring is provided at the end of the mounting cavity away from the slide rod, and the locking ring is detachably connected to the filling device.

9. A liquid oxygen supply device, characterized in that, It includes a liquid oxygen supply unit body, a filling pipe, and a filling valve as described in any one of claims 1-8, wherein the filling valve is connected to the outside of the liquid oxygen supply unit body, and the filling pipe is connected to both the liquid oxygen supply unit body and the filling valve.

Images