A plateau oxygen diffusion terminal

Abstract

The present invention discloses a plateau oxygen diffusion terminal, which belongs to the technical field of diffuse oxygen monitoring. The terminal comprises a main body, which is in the shape of a cylinder with an opening at one end. A first cavity and a second cavity which are independent of each other are arranged in the main body, and a solenoid valve is arranged in the first cavity, and an oxygen outlet is arranged in the second cavity. An upper cover is assembled at the open end of the main body, and the open ends of the first cavity and the second cavity are sealed with the side surface of the upper cover. An air inlet joint is arranged in the upper cover, and an oxygen supply passage which is connected with the air inlet joint is arranged in the upper cover, the solenoid valve is connected in series on the oxygen supply passage, and the other end of the oxygen supply passage is connected with the second cavity, so as to achieve the purpose of controlling the oxygen gas path according to the output signal of a diffuse oxygen monitor and realizing the automatic oxygen supply control function.

Description

Technical Field

[0001] The invention belongs to the technical field of diffuse oxygen monitoring, and in particular relates to a plateau oxygen diffusion terminal. Background Art

[0002] The plateau is a special environment, with atmospheric physics, geochemistry and ecological structure that are different from those of plains and hills. The biggest problem faced by people living in plateau areas is hypoxia. In plateau areas, hypoxia caused by too low oxygen partial pressure will directly affect people's health and living comfort; in addition, some long-term closed indoor spaces may also be hypoxic, and entering rashly may cause suffocation.

[0003] The plateau diffuse oxygen monitor is an instrument for detecting and controlling the ambient oxygen concentration in indoor places such as hotels, guesthouses, offices, homes, and storage rooms in plateau areas.

[0004] At present, the existing plateau diffuse oxygen monitors on the market are mainly used to detect the oxygen concentration in the occasion and provide diffuse oxygen supply according to the indoor oxygen concentration. However, the current plateau diffuse oxygen monitors lack an independent actuator to cooperate with them, that is, an oxygen diffusion terminal. In the existing technology, the oxygen outlet mechanism has a complex structure and loud noise, which affects the work and rest of users. Summary of the invention

[0005] In view of this, in order to solve the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a plateau oxygen diffusion terminal so as to control the oxygen gas circuit according to the output signal of the diffused oxygen monitor and realize the purpose of automatic oxygen supply control function.

[0006] The technical solution adopted by the present invention is: a plateau oxygen diffusion terminal, including a main body, which is a cylindrical body with an open end, and is provided with a first cavity and a second cavity which are independent of each other, and the first cavity is provided with a solenoid valve, and the second cavity is provided with an oxygen outlet; the open end of the main body is equipped with an upper cover, and the open ends of the first cavity and the second cavity are sealed with the side of the upper cover; the upper cover is provided with an air inlet connector, and an oxygen supply passage connected to the air inlet connector is provided in the upper cover, the solenoid valve is connected in series on the oxygen supply passage, and the other end of the oxygen supply passage is connected to the second cavity.

[0007] Furthermore, a first cylinder is provided in the main body, which divides the inner cavity of the main body into the first cavity and the second cavity, and the opening ends of the first cavity and the second cavity are located on the same plane; a first sealing groove and a second sealing groove are respectively provided on the end surfaces of the opening ends of the main body and the first cylinder, and a first sealing ring and a second sealing ring are respectively provided in the first sealing groove and the second sealing groove.

[0008] Furthermore, the upper cover includes a cavity cover and a flow guide integrally formed on the cavity cover, and the side of the cavity cover is sealed with the opening ends of the first cavity and the second cavity; the flow guide is provided with an air intake interface matching the air intake connector.

[0009] Further, the oxygen supply passage includes a first channel, a second channel and a third channel arranged inside the flow guide body, the first end holes of the first channel, the second channel and the third channel all extend to the side of the chamber cover, and the first end holes of the first channel and the second channel are respectively connected to the air inlet end and the air outlet end of the solenoid valve, and the first end hole of the third channel is connected to the second cavity; the air inlet interface is connected to the second end hole of the first channel, and the second end hole of the second channel is connected to the second end hole of the third channel.

[0010] Furthermore, it also includes a stepped hole arranged inside the flow guide body, the second end hole of the second channel and the second end hole of the third channel are both connected to the stepped hole, and a matching flow limiting component is sleeved in the stepped hole; the stepped hole and the second end hole of the second channel are located on the same axial line.

[0011] Furthermore, the flow limiting assembly includes a valve needle and a valve needle nut, the valve needle includes a flow limiting rod, a limit block and a threaded column arranged in sequence along the same axis, the flow limiting rod is in the shape of a truncated cone and its large end is connected to the limit block; one end of the valve needle nut is connected to the small hole of the stepped hole, and a limit hole and a threaded hole are provided in the valve needle nut, the limit hole and the threaded hole are arranged along the same axis and are connected to each other, the limit hole matches the limit block, and the threaded hole matches the threaded column.

[0012] Furthermore, a third sealing groove is provided on the valve needle nut, and a third sealing ring matching the large hole of the stepped hole is provided in the third sealing groove; a fourth sealing groove is provided between the limit block and the threaded column, and a fourth sealing ring is installed in the fourth sealing groove, and the fourth sealing ring matches the inner wall of the limit hole.

[0013] Furthermore, a cylinder with one end open is provided inside the second cavity and the cylinder is made of corundum, the open end of the cylinder is sealingly assembled and connected to the upper cover, and the interior of the cylinder is connected to the end of the oxygen supply channel.

[0014] Furthermore, a first interface and a fifth channel are provided on the flow guide body, one end of the fifth channel is located on the side wall of the flow guide body, and the other end is connected to the third channel; the first interface and the fifth channel are connected through a fourth channel; the port seal of the fifth channel located on the outside of the flow guide body is equipped with a plug.

[0015] Furthermore, the outer sleeve of the body is provided with a flange matching with it, and the side wall of the flange is provided with bolt holes; the outer side wall of the body is provided with a plurality of mounting screw holes evenly arranged along the axial direction thereof; and the flange is equipped with a spring buckle.

[0016] The beneficial effects of the present invention are:

[0017] 1. The plateau oxygen diffusion terminal disclosed in the present invention is used as the actuator of the plateau diffuse oxygen monitor, and the oxygen supply path is connected or disconnected through an electrically controlled solenoid valve to control whether oxygen is supplied to the monitored place. The solenoid valve is arranged in the body, and an oxygen supply channel is formed inside the upper cover to ensure that the entire terminal has a high degree of integrity and good airtightness. At the same time, the terminal has very high practicality, which lays a solid foundation for its large-scale promotion and application.

[0018] 2. The oxygen supply channel can be quickly processed through the integrally formed cavity cover and the flow guide body, and a flow limiting component capable of limiting the flow is provided on the oxygen supply channel to adjust the size of the oxygen supply flow rate to meet different oxygen supply needs.

[0019] 3. A cylinder made of corundum is arranged inside the second cavity, and the cylinder can effectively filter oxygen to ensure that the oxygen discharged from the oxygen outlet is cleaner.

[0020] 4. By fitting the flange on the outside of the body, the assembly position between the flange and the body can be adjusted as needed to meet different assembly requirements. The installation is convenient and quick and has good practicality.

[0021] 5. The overall equipment is small in size and light in weight. It can be embedded in the ceiling through a flange, which is easy to install.

[0022] 6. Utilize the tiny holes in the corundum material itself to diffuse a large amount of oxygen through these tiny holes, so as to reduce the noise during oxygen diffusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a plateau oxygen diffusion terminal provided by the present invention when viewed from above;

[0024] Figure 2 It is a cross-sectional schematic diagram of the main body of the plateau oxygen diffusion terminal provided by the present invention;

[0025] Figure 3 It is a structural schematic diagram of the upper cover of the plateau oxygen diffusion terminal provided by the present invention;

[0026] Figure 4 It is a top view schematic diagram of the upper cover of the plateau oxygen diffusion terminal provided by the present invention;

[0027] Figure 5 It is a top view schematic diagram of the plateau oxygen diffusion terminal provided by the present invention;

[0028] Figure 6 yes Figure 4 Schematic cross-sectional view along the AA direction;

[0029] Figure 7 yes Figure 4 A cross-sectional schematic diagram along the BB direction;

[0030] Figure 8 It is a schematic diagram of the structure of the valve needle in the plateau oxygen diffusion terminal provided by the present invention;

[0031] Fig. 9 It is a structural schematic diagram of a valve needle nut in a plateau oxygen diffusion terminal provided by the present invention;

[0032] Fig.10 It is a structural schematic diagram of the flange in the plateau oxygen diffusion terminal provided by the present invention;

[0033] Fig.11 It is a schematic diagram of the structure of the cylinder in the plateau oxygen diffusion terminal provided by the present invention;

[0034] Fig.12 It is a cross-sectional schematic diagram of the plateau oxygen diffusion terminal provided by the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship in which the invention product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The drawings in the embodiments of the present invention clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] like Figure 1-Figure 12As shown, the present invention provides a plateau oxygen diffusion terminal, including a body, which is a cylindrical shape with one end open. The body serves as a basic carrier of various components in the entire terminal. A first cavity 1 and a second cavity 2 are independently provided in the body, and a solenoid valve is provided in the first cavity 1, and the solenoid valve is embedded in the first cavity 1. The second cavity 2 is provided with an oxygen outlet 6, and an internal thread is provided on the inner wall of the oxygen outlet 6 for connecting a trachea joint. The oxygen outlet 6 is communicated with the internal space of the second cavity 2; the open end of the body is equipped with an upper cover 44, and the first cavity 1 is provided with a solenoid valve. The opening end of the second cavity 2 is sealed with the side of the upper cover 44, that is, the first cavity 1 forms a sealed space after the side of the upper cover 44 cooperates, and similarly, the second cavity 2 also forms a sealed space after the side of the upper cover 44 cooperates; the upper cover 44 is provided with an air intake connector 45, which can be connected to an external oxygen supply pipe through a thread, and the upper cover 44 is provided with an oxygen supply passage connected with the air intake connector 45, and the solenoid valve is connected in series on the oxygen supply passage, and the solenoid valve is actuated to control the on-off of the oxygen supply passage, and the other end of the oxygen supply passage is connected with the second cavity 2. In order to improve the overall aesthetics of the body, arc decoration can be processed at the end of the body to beautify the appearance. Preferably, in order to realize the installation of the upper cover 44, at least two support bodies 8 can be integrally formed on the inner wall of the body, and the end of the support body 8 facing the open end of the body is provided with an assembly screw hole 3, and the upper cover 44 is provided with a fixing hole 12 corresponding to each assembly screw hole 3, and the fixing screw passes through the fixing hole 12 and is connected to the assembly screw hole 3 to realize the firm assembly of the upper cover 44. In this embodiment, three support bodies 8 are provided and are evenly distributed in the opposite direction along the circumference of the body.

[0042] A first cylinder 7 is provided in the body, which is integrally formed in the body and has a cylindrical structure. The first cylinder 7 divides the inner cavity of the body into the first cavity 1 and the second cavity 2, and the opening ends of the first cavity 1 and the second cavity 2 are located on the same plane; a first sealing groove and a second sealing groove are respectively provided on the end surfaces of the opening ends of the body and the first cylinder 7, and a first sealing ring 4 and a second sealing ring 5 are respectively provided in the first sealing groove and the second sealing groove. When the upper cover 44 is firmly assembled on the body, the side surfaces of the upper cover 44 are pressed against the first sealing ring 4 and the second sealing ring 5 to achieve good sealing performance.

[0043] The upper cover 44 includes a cavity cover 10 and a guide body 11 integrally formed on the outer surface of the cavity cover 10. The side surface of the cavity cover 10 (i.e., the inner surface of the cavity cover 10) is sealed with the opening ends of the first cavity 1 and the second cavity 2, and the cavity cover 10 is provided with the fixing hole 12 to firmly assemble the cavity cover 10 on the opening end of the body; the guide body 11 is in a strip-shaped structure, and the guide body 11 is provided with an air inlet interface 21 matching the air inlet connector 45, and the air inlet interface 21 has a 1 / 4 or 1 / 8 thread to achieve assembly connection with the air inlet connector 45. Preferably, the cavity cover 10 is also provided with a wire hole 13, which is used to lead out the signal control line of the solenoid valve.

[0044] The oxygen supply passage includes a first hole 17, a second hole 18 and a third hole 20 arranged inside the flow guide 11, the first end holes of the first hole 17, the second hole 18 and the third hole 20 all extend to the side of the chamber cover 10, and the first end holes of the first hole 17 and the second hole 18 are respectively connected to the air inlet end and the air outlet end of the solenoid valve, and the first end hole of the third hole 20 is connected to the second cavity 2, that is, the first end hole of the third hole 20 is aligned with the opening range of the second cavity 2; the air inlet interface 21 is connected to the second end hole of the first hole 17, and the second end hole of the second hole 18 is connected to the second end hole of the third hole 20. Preferably, the second hole 18 is L-shaped.

[0045] The invention also includes a stepped hole arranged inside the flow guide body 11, the stepped hole is composed of a third cavity 22 and a fourth cavity 23, the inner diameter of the third cavity 22 is smaller than the inner diameter of the fourth cavity 23, and the third cavity 22 and the fourth cavity 23 are arranged along the same axis; the second end hole of the second channel 18 and the second end hole of the third channel 20 are both connected to the inner cavity of the third cavity 22, and a matching flow limiting component is sleeved and assembled in the stepped hole, and the flow limiting component can limit the oxygen flow between the second channel 18 and the third channel 20; the third cavity 22, the fourth cavity 23 and the second end hole of the second channel 18 are all located on the same axis, the bottom of the third cavity 22 is connected to the second end hole of the second channel 18, and the side of the third cavity 22 is connected to the second end hole of the third channel 20.

[0046] The current limiting assembly 43 includes a valve needle and a valve needle nut, and the valve needle includes a current limiting rod 27, a limit block 28 and a threaded column 30 arranged in sequence along the same axial line. The current limiting rod 27 is in the shape of a truncated cone, and the large end of the current limiting rod 27 is connected to the limit block 28. The ratio of the length of the current limiting rod 27 to its maximum diameter is 2-4:1. The end of the current limiting rod 27 away from the limit block 28 has a smaller diameter, while the end of the current limiting rod 27 close to the limit block 28 has a larger diameter, and its small end can be inserted into the second end hole of the second channel 18. The current limiting principle is: by adjusting the depth of the current limiting rod 27 inserted into the second end hole of the second channel 18, the flow rate of oxygen supply can be controlled.

[0047] The valve needle nut is an integrally formed structure, and the exterior of the valve needle nut is divided into two sections, one section is threadedly connected to the inner wall of the third cavity 22, and the other section is set as a hexagonal nut 33. The structure of the hexagonal nut 33 is convenient for the operator to screw the valve needle nut. A limiting hole 35 and a threaded hole 34 are provided in the valve needle nut. The limiting hole 35 and the threaded hole 34 are both circular holes. The limiting hole 35 and the threaded hole 34 are arranged along the same axis and are interconnected. The limiting hole 35 matches the limiting block 28, and the threaded hole 34 matches the threaded column 30. In the actual assembly process, the valve needle is first assembled into the valve needle nut, and then the valve needle nut is passed through the fourth cavity 23 and assembled and connected to the inner wall of the third cavity 22. At the same time, the current limiting rod 27 is inserted into the second channel 18. In order to improve the convenience of twisting the valve needle, a rotation slot 31 is provided on the end of the threaded column 30, which is arranged at the end away from the current limiting rod 27. The operator uses a tool and twists the valve needle by rotating the slot 31. The valve needle moves along the axis of the valve needle nut, so that the current limiting rod 27 is inserted into the second end hole of the second channel 18, thereby changing the aperture at the opening of the second channel 18, and then adjusting the oxygen flow through the second channel 18. The limit block 28 is also a cylindrical structure, and its outer diameter is larger than the outer diameter of the threaded column 30. By setting the limit block 28, the movement of the valve needle inside the valve needle nut can be limited to ensure the normal use of the function of the current limiting component 43.

[0048] A third sealing groove 32 is provided on the valve needle nut, and the opening direction of the third sealing groove 32 is toward the bottom surface of the fourth cavity 23. A third sealing ring is provided in the third sealing groove 32, and the third sealing ring is pressed against the bottom surface of the fourth cavity 23 to realize the sealed assembly of the valve needle nut in the stepped hole; a fourth sealing groove 29 is provided between the limit block 28 and the threaded column 30, and the fourth sealing groove 29 is a ring-shaped structure. A fourth sealing ring is installed in the fourth sealing groove 29, and the fourth sealing ring is sleeved on the fourth sealing groove 29, and the fourth sealing ring matches the inner wall of the limit hole 35 to realize the sealed assembly between the valve needle and the inside of the valve needle nut.

[0049] A cylinder 42 with one end open is provided inside the second cavity 2 and the cylinder 42 is made of corundum. The open end of the cylinder 42 is sealed and assembled with the upper cover 44, and the interior of the cylinder 42 is connected to the end of the oxygen supply channel, so that the interior of the cylinder 42 is the sixth cavity 41. Preferably, an annular mounting groove 26 is provided on the inner surface of the cavity cover 10, and the position of the mounting groove 26 is aligned with the second cavity 2, and the opening of the second hole end of the third channel 20 is located within the annular range of the mounting groove 26, so that the third channel 20 is connected with the central cavity of the cylinder 42. Preferably, the opening of the second hole end of the third channel 20 is located at the center of the mounting groove 26.

[0050] In order to further improve the assembly sealing degree of the cylinder 42, a fifth ring-shaped sealing groove 19 is provided at the bottom of the installation groove 26. The fifth sealing groove 19 contains epoxy resin and sealant. After the cylinder 42 is assembled into the interior of the installation groove 26, it is fixed and sealed by the epoxy resin and sealant in the fifth sealing groove 19 to prevent oxygen from leaking from the connection gap between the end of the cylinder 42 and the inner surface of the chamber cover 10. The cylinder 42 made of corundum can be used as a filter. The filter diameter of corundum is 10 to 50um. By utilizing the tiny pores of the corundum material itself, a large flow of oxygen is diffused through these tiny pores to achieve the purpose of reducing the noise during oxygen diffusion. Therefore, the cylinder 42 made of corundum can also play a good silencing role and produce the effect of a silencer.

[0051] The flow guide 11 is provided with a first interface 14 and a fifth hole 25, one end of the fifth hole 25 is located on the side wall of the flow guide 11, and the other end is connected to the third hole 20; the first interface 14 and the fifth hole 25 are connected through the fourth hole 24, and the fifth hole 25 is provided because it is necessary to complete the machining during mechanical processing. The fifth hole 25 mainly serves to connect the fourth hole 24 with the third hole 20. In actual use, it is necessary to seal the end hole of the fifth hole 25 (the port is located on the outside of the flow guide) with a plug to prevent gas leakage from the fifth hole 25. The first interface 14 can be used to connect other gas detection equipment, such as pressure sensors and other detection elements, so that the first interface 14 can be connected to the third cavity 22 through the fourth hole 24 and the fifth hole 25.

[0052] The outer sleeve of the body is provided with a flange 47 that matches it, and the side wall of the flange 47 is provided with bolt holes 39; the outer side wall of the body is provided with a plurality of mounting screw holes 9 evenly arranged along its axial direction, the mounting screw holes 9 should correspond to the support body 8, the mounting screw holes 9 are opened on the support body 8 and are arranged along the length direction of the support body 8; the flange 47 is provided with a spring buckle 40, the spring buckle 40 is assembled on the flange tube body 37 through the buckle hole 38, and there are two buckle holes 38 and the two buckle holes 38 are symmetrically arranged relative to the center of the flange.

[0053] Preferably, the flange 47 includes a flange tube body 37 and a flange plate 36 arranged along a coaxial line, the flange tube body 37 is a tubular structure, and its inner diameter is larger than the outer diameter of the main body; the side wall of the flange tube body 37 is provided with a bolt hole 39 corresponding to the mounting screw hole 9, and a bolt is provided on the bolt hole 39, and a gasket is sleeved on the bolt, and the gasket is placed between the mounting screw hole 9 and the flange tube body 37. During installation, the bolt is passed through the bolt hole and the gasket in sequence and then screwed into the mounting screw hole 9, so as to finally achieve a firm assembly of the flange and the main body. The flange tube body 37 also includes a spring buckle 40, which is arranged at both ends of the center line of the flange tube body 37. Preferably, the spring buckle 40 is arranged on the upper side of the bolt hole. The function of the spring buckle 40 is: when the flange needs to be assembled, the spring buckle 40 and the side wall of the body can be pressed against each other to preliminarily fix the flange, and the height of the body on the upper and lower sides of the flange can be changed to adapt to different installation environments. When the flange is adjusted to an appropriate position, the bolts are passed through the bolt holes 39 and the washers in sequence and then screwed into the mounting screw holes 9 to firmly assemble the flange and the body. The flange 36 is integrally formed on the outside of the flange tube body 37, and the shape of the flange 36 is set to an elliptical structure, and the flange 36 is arranged at the end close to the oxygen outlet 6, which can have a good beautification effect.

[0054] In this embodiment, the solenoid valve is located in the first cavity 1 of the body, and the solenoid valve includes a closing member, a wire package 46 and a fixing seat. The inner side of the cavity cover 10 is provided with a solenoid valve positioning hole 15, a solenoid valve fixing hole 16 and a fixing seat for fixing the solenoid valve. The closing member includes an air inlet end and an air outlet end, and the air inlet end and the air outlet end are respectively connected to the first hole 17 and the second hole 18, and are sealed at the connection through a sealing groove and a sealing ring. When the wire package 46 is powered on, the closing member will be opened, and the first hole 17 and the second hole 18 are connected through the closing member; conversely, when the wire package 46 is powered off, the connection between the first hole 17 and the second hole 18 is cut off through the closing member.

[0055] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A plateau oxygen diffusion terminal, comprising a main body, the main body is a cylinder with one end open, characterized in that: The body is provided with a first cavity and a second cavity which are independent of each other, and the first cavity is provided with a solenoid valve, and the second cavity is provided with an oxygen outlet; the open end of the body is equipped with an upper cover, and the open ends of the first cavity and the second cavity are sealed with the side of the upper cover; the upper cover is provided with an air inlet connector, and an oxygen supply passage connected with the air inlet connector is provided in the upper cover, the solenoid valve is connected in series on the oxygen supply passage, and the other end of the oxygen supply passage is connected with the second cavity; The upper cover comprises a cavity cover and a guide body integrally formed on the cavity cover, and the side of the cavity cover is sealed with the opening ends of the first cavity and the second cavity; the guide body is provided with an air inlet interface matching the air inlet connector; The oxygen supply passage comprises a first channel, a second channel and a third channel arranged inside the flow guide body, the first end holes of the first channel, the second channel and the third channel all extend to the side of the chamber cover, and the first end holes of the first channel and the second channel are respectively connected to the air inlet end and the air outlet end of the solenoid valve, and the first end hole of the third channel is connected to the second cavity; the air inlet interface is connected to the second end hole of the first channel, and the second end hole of the second channel is connected to the second end hole of the third channel; The flow guide body is provided with a first interface and a fifth channel, one end of the fifth channel is located on the side wall of the flow guide body, and the other end is connected to the third channel; the first interface and the fifth channel are connected through a fourth channel; the port seal of the fifth channel located outside the flow guide body is equipped with a plug.

2. The plateau oxygen diffusion terminal according to claim 1, characterized in that: A first cylinder is provided in the main body, and the first cylinder divides the inner cavity of the main body into the first cavity and the second cavity, and the opening ends of the first cavity and the second cavity are located on the same plane; a first sealing groove and a second sealing groove are respectively provided on the end surfaces of the opening ends of the main body and the first cylinder, and a first sealing ring and a second sealing ring are respectively provided in the first sealing groove and the second sealing groove.

3. The plateau oxygen diffusion terminal according to claim 1, characterized in that: It also includes a stepped hole arranged inside the flow guide body, the second end hole of the second channel and the second end hole of the third channel are both connected to the stepped hole, and a matching flow limiting component is sleeved in the stepped hole; the stepped hole and the second end hole of the second channel are located on the same axial line.

4. The plateau oxygen diffusion terminal according to claim 3, characterized in that: The flow limiting assembly includes a valve needle and a valve needle nut. The valve needle includes a flow limiting rod, a limit block and a threaded column arranged in sequence along the same axis. The flow limiting rod is in the shape of a truncated cone and its large end is connected to the limit block. One end of the valve needle nut is connected to the small hole of the stepped hole. A limit hole and a threaded hole are provided in the valve needle nut. The limit hole and the threaded hole are arranged along the same axis and are connected to each other. The limit hole matches the limit block, and the threaded hole matches the threaded column.

5. The plateau oxygen diffusion terminal according to claim 4, characterized in that: A third sealing groove is provided on the valve needle nut, and a third sealing ring matching the large hole of the stepped hole is provided in the third sealing groove; a fourth sealing groove is provided between the limit block and the threaded column, and a fourth sealing ring is installed in the fourth sealing groove, and the fourth sealing ring matches the inner wall of the limit hole.

6. The plateau oxygen diffusion terminal according to claim 1, characterized in that: A cylinder with one end open is arranged inside the second cavity and is made of corundum. The open end of the cylinder is sealingly assembled and connected to the upper cover, and the interior of the cylinder is connected to the end of the oxygen supply passage.

7. The plateau oxygen diffusion terminal according to claim 1, characterized in that: The outer sleeve of the body is provided with a flange matching with it, and the side wall of the flange is provided with bolt holes; the outer side wall of the body is provided with a plurality of mounting screw holes evenly arranged along the axial direction thereof; and the flange is equipped with a spring buckle.

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