Gas filling equipment and gas filling system

Abstract

The embodiment of the utility model provides gas filling equipment and a gas filling system.The gas filling equipment comprises a filling pipeline, the input end of the filling pipeline is connected with gas supply equipment, the output end of the filling pipeline is connected with to-be-filled equipment, and the output pressure of the gas supply equipment is larger than that of the to-be-filled equipment; and a pressure regulating valve with a pressure regulating function is arranged on the filling pipeline. By arranging the pressure regulating valve on the filling pipeline, the pressure of the gas in the filling pipeline can be regulated, so that different devices to be filled can be better adapted, and the universality of the gas filling device is improved.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to a gas filling device and a gas filling system. Background Technology

[0002] With the improvement of people's living standards and the advancement of medical technology, people are paying more and more attention to respiratory health. In order to improve the convenience of oxygen inhalation, clean oxygen generated by gas supply equipment (such as oxygen generators, high-pressure oxygen cylinders, etc.) is usually filled into portable filling equipment (such as disposable oxygen bags, portable refillable oxygen cylinders, etc.) through gas filling equipment.

[0003] However, different devices require different filling pressures, and existing gas filling equipment cannot meet the filling needs of different devices at the same time, resulting in poor versatility of gas filling equipment. Utility Model Content

[0004] This application aims to provide a gas filling device and a gas filling system to solve the problem of poor versatility of existing gas filling devices.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses a gas filling device for oxygen filling, comprising a filling pipeline, wherein the input end of the filling pipeline is connected to a gas supply device and the output end is connected to a device to be filled, the output pressure of the gas supply device is greater than the output pressure of the device to be filled, and the filling pipeline is provided with a pressure regulating valve having a pressure regulating function.

[0007] Optionally, the pressure regulating valve includes: a valve seat, a valve body, an adjusting handle, and a locking mechanism, wherein the axis of the valve body is in a first direction;

[0008] The valve body includes a bracket and a valve stem assembly, the bracket being fixedly connected to the valve seat, and the valve stem assembly being movably connected within the bracket;

[0009] The adjusting handle is sleeved on the end of the bracket opposite to the valve seat and can move along the first direction; the adjusting handle is connected to the valve stem assembly in a transmission manner.

[0010] The locking mechanism includes a first locking mechanism and / or a second locking mechanism;

[0011] The first locking mechanism is connected to the adjusting handle and the bracket respectively to restrict the rotation of the adjusting handle around the first direction;

[0012] The second locking mechanism is connected to the adjusting handle and the valve stem assembly respectively to restrict the movement of the adjusting handle along the first direction.

[0013] Optionally, the first locking mechanism includes: a limiting protrusion and a limiting groove extending along the first direction;

[0014] The limiting protrusion is disposed on one of the adjusting handle or the bracket, and the limiting groove is disposed on the other of the adjusting handle or the bracket. The limiting protrusion is embedded in the limiting groove to restrict the adjusting handle from rotating around the first direction.

[0015] Optionally, the adjusting handle includes a first top wall and a first peripheral wall surrounding the first top wall, and the limiting protrusion is disposed on the side of the first peripheral wall opposite to the first top wall;

[0016] The bracket has an annular protrusion at a corresponding position on the first peripheral wall, and the limiting groove is located on the side of the annular protrusion close to the first peripheral wall.

[0017] Optionally, multiple limiting protrusions are provided, and the multiple limiting protrusions are spaced apart along the circumferential direction of the first peripheral wall;

[0018] The limiting groove is provided in multiple ways, and the multiple limiting grooves are arranged at intervals along the circumference of the annular protrusion, and one limiting protrusion is embedded in one limiting groove.

[0019] Optionally, the second locking mechanism includes: a limiting member, a first limiting hole, and a second limiting hole;

[0020] The first limiting hole is disposed on the first top wall;

[0021] The second limiting hole is located at one end of the valve stem assembly near the first top wall;

[0022] The limiting member passes through the first limiting hole and the second limiting hole and is connected to the first limiting hole and the second limiting hole to restrict the movement of the adjusting handle along the first direction.

[0023] Optionally, the length of the engagement between the limiting member and the second limiting hole in the first direction is the first length, and the length of the limiting protrusion in the first direction is the second length, wherein the second length is less than the first length.

[0024] Optionally, the filling line includes a connecting pipe connected to the pressure regulating valve;

[0025] The gas filling device further includes a connection structure, which includes a first connector and a second connector. The second connector is disposed on the pressure regulating valve, and the first connector is disposed on the end of the connecting pipe near the pressure regulating valve. The first connector and the second connector are inserted into each other.

[0026] Optionally, the first connector includes a first connector body, and the first connector body is provided with a slot in the circumferential direction;

[0027] The second connector includes a second connecting body, a limiting structure, and a plurality of steel balls. The second connecting body is provided with a plurality of mounting holes spaced apart in the circumference. One steel ball is movably connected to one of the mounting holes. The limiting structure is sleeved on the second connecting body and is used to limit the position of the steel ball.

[0028] When the first connector and the second connector are inserted together, the limiting structure limits the steel ball, and the steel ball is engaged with the slot. When the first connector and the second connector are disengaged, the limiting structure releases the limitation on the steel ball, and the steel ball is disengaged from the slot.

[0029] Optionally, the limiting structure includes: a limiting sleeve and a limiting spring;

[0030] The limiting sleeve is fitted onto the second connecting body. The limiting sleeve has a locked position and an unlocked position. In the locked position, the limiting sleeve abuts against the steel ball to limit the steel ball. In the unlocked position, the limiting sleeve releases abutment from the steel ball to release the limitation on the steel ball.

[0031] The limiting spring is disposed between the limiting sleeve and the second connecting body. Under the elastic action of the limiting spring, the limiting sleeve can switch between the locked position and the unlocked position.

[0032] Optionally, the first connecting body is provided with a first channel, and the second connecting body is provided with a second channel;

[0033] The first connector further includes a first valve port and a first valve core. The first valve port is disposed on the inner wall of the first channel, and the first valve core is movably connected to the inner wall of the first channel to block or unblock the first valve port. The second connector further includes a second valve port and a second valve core. The second valve port is disposed on the inner wall of the second channel, and the second valve core is movably connected to the inner wall of the second channel to block or unblock the second valve port.

[0034] When the first connector and the second connector are inserted together, the first valve core and the second valve core abut against each other, so that the first valve core and the second valve core respectively release the blockage of the first valve port and the second valve port; when the first connector and the second connector are not inserted together, the first valve core and the second valve core release the abutment, so that the first valve core and the second valve core respectively block the first valve port and the second valve port.

[0035] Optionally, the gas filling equipment further includes a filter, which is disposed in the filling pipeline and located upstream of the pressure regulating valve, and is used to filter and purify the gas.

[0036] Optionally, the filter and the pressure regulating valve are integrated into a single unit.

[0037] Optionally, the gas filling device further includes a pressure gauge, which is disposed in the filling pipeline and located downstream of the pressure regulating valve, and is used to monitor the pressure of the gas.

[0038] Optionally, the pressure gauge and the pressure regulating valve are integrated into a single unit.

[0039] Secondly, this application also discloses a gas filling system, including: a gas supply device, a device to be filled, and the aforementioned gas filling device;

[0040] The gas filling device is located between the gas supply device and the device to be filled, and is connected to both the gas supply device and the device to be filled.

[0041] In this embodiment of the application, by setting a pressure regulating valve on the filling pipeline, the pressure of the gas in the filling pipeline can be adjusted, thereby better adapting to different filling devices and improving the versatility of the gas filling equipment.

[0042] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0043] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0044] Figure 1 This is one of the structural schematic diagrams of a gas filling device provided in the embodiments of this application;

[0045] Figure 2 This is a second structural schematic diagram of a gas filling device provided in an embodiment of this application;

[0046] Figure 3 This is one of the structural schematic diagrams of the pressure regulating valve provided in the embodiments of this application;

[0047] Figure 4 This is a second schematic diagram of the pressure regulating valve provided in the embodiments of this application;

[0048] Figure 5 yes Figure 4 A magnified view of a portion of position A in the middle;

[0049] Figure 6 yes Figure 2 A magnified view of a portion of position B in the middle;

[0050] Figure 7 This is a schematic diagram of a gas filling system provided in an embodiment of this application.

[0051] Reference numerals: 100. Gas filling equipment; 1. Pressure regulating valve; 11. Valve seat; 111. First air inlet channel; 112. First air outlet channel; 12. Valve body; 121. Support; 1211. First support; 12111. Annular boss; 1212. Second support; 12121. Air inlet; 12122. Air outlet; 122. Valve stem assembly; 1221. Adjusting screw; 1222. Spring compression knob; 1223. Pressure spring; 1224. Pressure regulating diaphragm. 1225. Pressure stroke guide post; 1226. Pressure output sealing gasket; 123. First seal; 124. Second seal; 125. Third seal; 13. Adjusting handle; 131. First top wall; 1311. Snap-fit ​​groove; 132. First peripheral wall; 14. First locking mechanism; 141. Limiting protrusion; 142. Limiting groove; 15. Second locking mechanism; 151. Limiting element; 152. First limiting hole; 153. Second limiting hole; 2. Filter; 21. End 22. Filter element bracket, 23. Filter element, 24. Second air inlet channel, 25. Second air outlet channel, 3. Pressure gauge, 4. Connecting pipe, 5. Connecting structure, 51. First connector, 511. First connecting body, 5111. First channel, 5112. Slot, 512. First valve port, 513. First valve core, 5131. First valve core body, 5132. First valve core bracket, 5133. First valve core spring, 5134. First spring seat, 52. Second connector 521. Second connecting body, 5211. Second channel, 5212. Mounting hole, 5213. Second flange, 522. Second valve port, 523. Second valve core, 5231. Second valve core body, 5232. Second valve core bracket, 5233. Second valve core spring, 5234. Second spring seat, 524. Steel ball, 525. Limiting sleeve, 5251. First flange, 526. Limiting spring, 200. Gas supply equipment, 300. Equipment to be filled, X. First direction. Detailed Implementation

[0052] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0053] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] This application provides a gas filling device, which will be described in detail below with reference to the accompanying drawings.

[0057] Reference Figures 1 to 2 The diagram shows a structural schematic of a gas filling device according to an embodiment of this application. (Refer to...) Figures 3 to 4 The diagram shows a structural schematic of the pressure regulating valve provided in an embodiment of this application. (Refer to...) Figure 5 , showed Figure 4 A magnified view of the area at position A in the middle, refer to... Figure 6 , showed Figure 2 A magnified view of the area at position B in the middle.

[0058] like Figures 1 to 2 As shown in the illustration, this application also provides a gas filling device 100, including: a filling pipeline, the input end of which is connected to a gas supply device 200, and the output end of which is connected to a device 300 to be filled. The output pressure of the gas supply device 200 is greater than the output pressure of the device 300 to be filled. The filling pipeline is equipped with a pressure regulating valve 1 with pressure regulation function. Taking oxygen filling as an example, the output pressure of the gas supply device 200 is usually above 100 kPa, while the input pressure of the device 300 to be filled is usually below 50 kPa.

[0059] In this embodiment of the application, by setting a pressure regulating valve 1 on the filling pipeline, the pressure of the gas in the filling pipeline can be adjusted, thereby better adapting to different filling devices 300 and improving the versatility of the gas filling device 100.

[0060] like Figures 3 to 5 As shown, the pressure regulating valve includes at least a locking mechanism that requires manual unlocking or locking. The locking mechanism can not only regulate the pressure, but also maintain a stable pressure in the pressure valve. In one embodiment, the pressure regulating valve 1 includes: a valve seat 11, a valve body 12, an adjusting handle 13, and a locking mechanism. The locking mechanism includes a first locking mechanism 14 and / or a second locking mechanism 15. The axis of the valve body 12 is in the first direction X. The valve body 12 includes a bracket 121 and a valve stem assembly 122. The bracket 121 is fixedly connected to the valve seat 11, and the valve stem assembly 122 is movably connected within the bracket 121. The adjusting handle 13 is sleeved on the end of the bracket 121 opposite to the valve seat 11 and can move along the first direction X. The adjusting handle 13 is kinetically connected to the valve stem assembly 122. The first locking mechanism 14 is connected to the adjusting handle 13 and the bracket 121 respectively to restrict the rotation of the adjusting handle 13 around the first direction X. The second locking mechanism 15 is connected to the adjusting handle 13 and the valve stem assembly 122 respectively to restrict the movement of the adjusting handle 13 along the first direction X.

[0061] In this embodiment, a first locking mechanism 14 is provided, which, through its connection with the adjusting handle 13 and the bracket 121, restricts the rotation of the adjusting handle 13 around the first direction X. A second locking mechanism 15 is provided, which, through its connection with the adjusting handle 13 and the valve stem assembly 122, restricts the movement of the adjusting handle 13 along the first direction X. In summary, the dual locking by the first locking mechanism 14 and the second locking mechanism 15 reliably limits the adjusting handle 13, effectively preventing misoperation and maintaining a stable pressure in the pressure regulating valve 1, thus improving the reliability of the gas filling equipment 100.

[0062] It should be noted that the fixed connection method between the bracket 121 and the valve seat 11 is not limited in the embodiments of this application, and those skilled in the art can make adjustments according to actual needs. In one embodiment, the bracket 121 and the valve seat 11 are threaded together, and in order to further improve the sealing performance at the connection between the valve body 12 and the valve seat 11, the pressure regulating valve 1 also includes a first sealing element 123, which is disposed at the connection between the bracket 121 and the valve seat 11.

[0063] In a specific application, the bracket 121 includes a first bracket 1211 and a second bracket 1212 arranged along a first direction X, wherein the first bracket 1211 is located outside the valve seat 11, and the second bracket 1212 is located inside the valve seat 11. Further, the valve seat 11 includes a first air inlet channel 111 and a first air outlet channel 112. The second bracket 1212 is provided with an air inlet 12121 and an air outlet 12122 that communicate with each other. The air inlet 12121 communicates with the first air inlet channel 111, and the air outlet 12122 communicates with the first air outlet channel 112. At least a portion of the valve stem assembly 122 abuts against the air outlet 12122. By adjusting the valve stem assembly 122, the output pressure of the pressure regulating valve 1 can be adjusted and maintained at a preset pressure value. Specifically, the second support 1212 includes a second bottom wall perpendicular to the first direction X and a second peripheral wall surrounding the second bottom wall. An air inlet 12121 is located on the second peripheral wall, and an air outlet 12122 is located on the second bottom wall. Furthermore, the second peripheral wall is also provided with an annular sealing groove located between the air inlet 12121 and the air outlet 12122. The pressure regulating valve 1 also includes a second sealing element 124, which is disposed in the sealing groove, thereby achieving a sealed connection between the second peripheral wall and the inner wall of the valve seat 11, ensuring that gas can only enter from the air inlet 12121 and flow out from the air outlet 12122.

[0064] Further, the valve stem assembly 122 includes an adjusting screw 1221, a spring compression knob 1222, a pressure spring 1223, a pressure regulating diaphragm 1224, a pressure stroke guide post 1225, and a pressure output sealing gasket 1226. The adjusting handle 13 has a corresponding engagement groove 1311 on the adjusting screw 1221. The adjusting screw 1221 and the pressure stroke guide post 1225 are arranged along the first direction X, and at least a portion of the adjusting screw 1221 extends into the engagement groove 1311 to engage with the adjusting handle 13. Rotating the adjusting handle 13 drives the adjustment screw 1221 to rotate. The spring compression knob 1222 is sleeved on the adjusting screw 1221 and threadedly connected to it. The pressure spring 1223... 223 is sleeved on the adjusting screw 1221. The two ends of the pressure spring 1223, which are opposite to each other along the first direction X, abut against the spring compression knob 1222 and the pressure stroke guide post 1225, respectively. In this way, by rotating the adjusting handle 13, the adjusting screw 1221 is rotated, and the spring compression knob 1222 can move up or down along the first direction X, so that the pressure spring 1223 is extended or compressed, thereby adjusting the thrust of the pressure spring 1223 on the pressure stroke guide post 1225.

[0065] Furthermore, the pressure regulating diaphragm 1224 is disposed between the bracket 121 and the pressure stroke guide post 1225, and is fixedly connected to the bracket 121 and the end of the pressure stroke guide post 1225 near the pressure spring 1223, respectively. On the one hand, the deformation of the pressure regulating diaphragm 1224 can guide the pressure stroke guide post 1225 to move in the first direction X; on the other hand, the pressure regulating diaphragm 1224 can divide the interior of the bracket 121 into two mutually separated chambers, separating the gas from the main pressure regulating components of the valve stem assembly 122 (such as the pressure spring 1223, the adjusting screw 1221, and the spring compression knob 1222). This not only avoids gas leakage, but also prevents the gas from contacting the main pressure regulating components, which is beneficial to improving the service life of the pressure regulating valve 1.

[0066] Furthermore, a sealing part is provided at the end of the pressure stroke guide post 1225 away from the pressure spring 1223. The sealing part is located on the side of the second bottom wall away from the center of the second bracket 1212. Gas output can be achieved by the contact or release of the sealing part with the air outlet 12122. The pressure output sealing gasket 1226 is provided between the sealing part and the air outlet 12122, thereby improving the sealing performance between the sealing part and the air outlet 12122 and preventing gas leakage. In practical applications, when the gas pressure entering the inlet 12121 is less than the preset pressure value of the pressure regulating valve 1, the sealing part abuts against the outlet 12122, blocking the outlet 12122 and preventing gas output. When the gas pressure entering the inlet 12121 is greater than the preset pressure value of the pressure regulating valve 1, the sealing part moves away from the outlet 12122, releasing the abutment between the sealing part and the outlet 12122, thus releasing the blockage and allowing gas to output from the outlet 12122. It can be understood that the gas pressure at the inlet 12121 (i.e., the input pressure of the pressure regulating valve 1) is the difference between the elastic force of the pressure spring 1223 and the gas pressure at the outlet 12122 (i.e., the output pressure of the pressure regulating valve 1). In addition, the pressure regulating valve 1 also includes a third seal 125, which is disposed between the pressure stroke guide post 1225 and the bracket 121 to achieve a seal between the pressure stroke guide post 1225 and the bracket 121.

[0067] In some optional embodiments of this application, the first locking mechanism 14 includes: a limiting protrusion 141 and a limiting groove 142 extending along a first direction X; the limiting protrusion 141 is disposed on one of the adjusting handle 13 or the bracket 121, and the limiting groove 142 is disposed on the other of the adjusting handle 13 or the bracket 121, and the limiting protrusion 141 is embedded in the limiting groove 142 to restrict the adjusting handle 13 from rotating around the first direction X.

[0068] In this embodiment, on the one hand, since the corresponding positions of the adjusting handle 13 and the bracket 121 are respectively provided with limiting protrusions 141 and limiting grooves 142, the mechanical locking between the adjusting handle 13 and the bracket 121 can be achieved through the cooperation of the limiting protrusions 141 and the limiting grooves 142, thereby restricting the adjustment handle 13 from rotating around the first direction X. This can effectively avoid pressure changes caused by misoperation and is beneficial to improving the stability and installability of the pressure regulating valve 1. In addition, since the structure of the limiting protrusions 141 and the limiting grooves 142 is simple, the structure of the pressure regulating valve 1 can be simplified, the cost of the pressure regulating valve 1 can be reduced, and the versatility of the pressure regulating valve 1 can be improved.

[0069] It should be noted that the shapes of the limiting protrusion 141 and the limiting groove 142 are not limited in this application embodiment. Those skilled in the art can adjust them according to actual needs. It is understood that when the shapes of the limiting protrusion 141 and the limiting groove 142 are consistent, they can fit together better, which is beneficial to improving the reliability of the first locking mechanism 14. In one embodiment, both the limiting protrusion 141 and the limiting groove 142 are cylindrical. In addition, the accompanying drawings of this application only show the case where the limiting protrusion 141 is disposed on the adjusting handle 13 and the limiting groove 142 is disposed on the bracket 121. In actual applications, the limiting protrusion 141 can also be disposed on the bracket 121, and correspondingly, the limiting groove 142 can also be disposed on the adjusting handle 13. This is not limited here, and those skilled in the art can adjust them according to actual needs.

[0070] In some optional embodiments of this application, the adjusting handle 13 includes a first top wall 131 and a first peripheral wall 132 surrounding the first top wall 131. A limiting protrusion 141 is disposed on the side of the first peripheral wall 132 opposite to the first top wall 131. The bracket 121 is provided with an annular boss 12111 at a corresponding position on the first peripheral wall 132, and a limiting groove 142 is disposed on the side of the annular boss 12111 close to the first peripheral wall 132. Thus, when the adjusting handle 13 is lifted (i.e., the adjusting handle 13 moves away from the valve body 12 along the first direction X under the action of external force), the limiting protrusion 141 located on the first peripheral wall 132 can disengage from the limiting groove 142 located on the annular boss 12111, thereby unlocking the first locking mechanism 14. The pressure can be adjusted by rotating the adjusting handle 13. When the adjusting handle 13 is pressed (i.e., the adjusting handle 13 moves in the first direction X toward the valve body 12 under the action of external force), the limiting protrusion 141 located on the first peripheral wall 132 can be inserted into the limiting groove 142 located on the annular boss 12111, thereby realizing the reliable locking of the first locking mechanism 14, thereby restricting the adjustment handle 13 from rotating around the first direction X, which can effectively avoid pressure change problems caused by misoperation.

[0071] In some optional embodiments of this application, multiple limiting protrusions 141 are provided, and the multiple limiting protrusions 141 are spaced apart circumferentially along the first peripheral wall 132; multiple limiting grooves 142 are provided, and the multiple limiting grooves 142 are spaced apart circumferentially along the annular boss 12111, and one limiting protrusion 141 is embedded in one limiting groove 142.

[0072] In this embodiment, by setting multiple limiting protrusions 141 and limiting grooves 142, multi-point locking can be achieved. On the one hand, it can improve the locking reliability between the regulating handle 13 and the bracket 121, which is conducive to further improving the stability and safety of the regulating valve. On the other hand, in case of misoperation, the external force can be evenly distributed on each limiting protrusion 141 and limiting groove 142, thereby reducing the stress intensity of a single limiting protrusion 141 and limiting groove 142, which is conducive to enhancing the durability of the first locking mechanism 14.

[0073] In some optional embodiments of this application, the second locking mechanism 15 includes: a limiting member 151, a first limiting hole 152, and a second limiting hole 153; the first limiting hole 152 is disposed on the first top wall 131; the second limiting hole 153 is disposed on one end of the valve stem assembly 122 near the first top wall 131; the limiting member 151 passes through the first limiting hole 152 and the second limiting hole 153 and is engaged with the first limiting hole 152 and the second limiting hole 153 to restrict the movement of the adjusting handle 13 along the first direction X.

[0074] In this embodiment, since the first top wall 131 of the adjusting handle 13 is provided with a first limiting hole 152 and the valve stem assembly 122 is provided with a second limiting hole 153, the adjusting handle 13 can be restricted from moving along the first direction X by the cooperation of the limiting member 151 with the first limiting hole 152 and the second limiting hole 153. That is, the adjusting handle 13 will not be lifted due to misoperation, effectively preventing the first locking mechanism 14 from being unlocked, which is conducive to further improving the stability and installability of the pressure regulating valve 1.

[0075] In one embodiment, the limiting member 151 is a screw, and the first limiting hole 152 and the second limiting hole 153 are both threaded holes. The screw passes through the two threaded holes in sequence and engages with them. In another embodiment, the limiting member 151 is a screw, the first limiting hole 152 is a smooth hole, and the second limiting hole 153 is a threaded hole. The screw passes through the smooth hole and the threaded hole in sequence and engages with them. Thus, tightening the screw locks the second locking mechanism 15, thereby restricting the movement of the adjusting handle 13 along the first direction X and preventing the adjusting handle from being lifted by external force. Loosening the screw unlocks the second locking mechanism 15, allowing the adjusting handle 13 to move along the first direction X, causing the adjusting handle to be lifted by external force, thereby unlocking the first locking mechanism 14.

[0076] In some optional embodiments of this application, the engagement length between the limiting member 151 and the second limiting hole 153 in the first direction X is a first length, and the length of the limiting protrusion 141 in the first direction X is a second length, which is less than the first length. Thus, when the limiting protrusion 141 is completely disengaged from the limiting groove 142, the limiting member 151 can still remain connected to the second limiting hole 153 of the valve stem assembly 122. That is, during pressure adjustment, it is not necessary to completely loosen and remove the limiting member 151, which improves the convenience of pressure adjustment.

[0077] Combined with appendix Figures 3 to 5 The following is an example of the pressure regulation process of the pressure regulating valve 1 according to an embodiment of this application:

[0078] When pressure adjustment is required, firstly, use a tool to loosen the limiting member 151 to unlock the second locking mechanism 15; secondly, lift the adjusting handle 13 to disengage the limiting protrusion 141 from the limiting groove 142, thereby unlocking the first locking mechanism 14; finally, rotate the adjusting handle 13 to drive the valve stem assembly 122, thereby achieving pressure adjustment.

[0079] After the pressure adjustment is completed, firstly, press the adjustment handle 13 so that the limiting protrusion 141 is embedded in the limiting groove 142, thereby locking the first locking mechanism 14; secondly, use a tool to tighten the limiting part 151 to lock the second locking mechanism 15, thus completing the double locking of the adjustment handle 13.

[0080] In some alternative embodiments of this application, such as Figure 6 As shown, the filling pipeline includes a connecting pipe 4 connected to the pressure regulating valve 1; the gas filling device 100 also includes a connecting structure 5, which includes a first connector 51 and a second connector 52. The second connector 52 is located at the pressure regulating valve 1, and the first connector 51 is located at the end of the connecting pipe 4 near the pressure regulating valve 1. The first connector 51 and the second connector 52 are inserted into each other. In this way, due to the provision of the first connector 51 and the second connector 52, a reliable connection between the connecting pipe 4 and the pressure regulating valve 1 can be quickly and reliably achieved through the insertion and connection of the first connector 51 and the second connector 52.

[0081] In some optional embodiments of this application, the first connector 51 includes a first connector body 511, and the first connector body 511 is provided with a slot 5112 in the circumferential direction; the second connector 52 includes a second connector body 521, a limiting structure, and a plurality of steel balls 524. The second connector body 521 is provided with a plurality of mounting holes 5212 at intervals in the circumferential direction. One steel ball 524 is movably connected to one mounting hole 5212. The limiting structure is sleeved on the second connector body 521 and is used to limit the steel ball 524. When the first connector 51 and the second connector 52 are inserted together, the limiting structure limits the steel ball 524, and the steel ball 524 is engaged with the slot 5112. When the first connector 51 and the second connector 52 are disengaged, the limiting structure releases the limitation on the steel ball 524, and the steel ball 524 is disengaged from the slot 5112.

[0082] In this embodiment, on the one hand, since the first connector 51 is provided with a slot 5112 and the second connector 52 is provided with a steel ball 524, the first connector 51 and the second connector 52 can be connected by the steel ball 524 engaging with the slot 5112. The engagement method of the steel ball 524 and the slot 5112 is simple, simplifying the structure of the first connector 51 and the second connector 52, and reducing the processing difficulty and cost of the connection structure 5. On the other hand, in practical applications, when the pressure regulating valve 1 is used in scenarios with high gas pressure, such as oxygen filling, the output pressure of the gas supply device 200 is usually above 100 kPa, while the input pressure of the device to be filled 300 is usually below 50 kPa. Therefore, the connection structure 5 is prone to loosening, leading to gas leakage. Based on this, by setting a limiting structure, the steel ball 524 can be reliably engaged with the slot 5112, effectively preventing the connection structure 5 from loosening due to excessive air pressure in the pipeline, which is beneficial to improving the insertion reliability of the first connector 51 and the second connector 52.

[0083] It should be noted that the embodiments of this application do not limit the number of mounting holes 5212 and steel balls 524. Those skilled in the art can adjust them according to actual needs. It is understood that the number of mounting holes 5212 and steel balls 524 should be the same. Further, in one embodiment, the mounting hole 5212 is a frustum-shaped hole, and the opening size of the mounting hole 5212 is reduced along the direction from the center to the edge of the second connecting body 521, thereby preventing the steel balls 524 from leaving the mounting hole 5212 and entering the second connecting body 521 during movement.

[0084] In some optional embodiments of this application, the limiting structure includes: a limiting sleeve 525 and a limiting spring 526; the limiting sleeve 525 is sleeved on the second connecting body 521, and the limiting sleeve 525 has a locked position and an unlocked position. In the locked position, the limiting sleeve 525 abuts against the steel ball 524 to limit the steel ball 524. In the unlocked position, the limiting sleeve 525 releases abutment against the steel ball 524 to release the limitation on the steel ball 524; the limiting spring 526 is disposed between the limiting sleeve 525 and the second connecting body 521. Under the elastic action of the limiting spring 526, the limiting sleeve 525 can switch between the locked position and the unlocked position.

[0085] In this embodiment, a limiting sleeve 525 and a limiting spring 526 are provided, with the limiting sleeve 525 fitted onto the second connecting body 521. Thus, when the first connecting head 51 and the second connecting head 52 are engaged, the limiting sleeve 525 can switch to the locking position under the elastic action of the limiting spring 526. This allows the two ends of the steel ball 524 along the radial direction of the second connecting body 521 to abut against the slot 5112 and the limiting sleeve 525 respectively, thereby restricting the movement of the steel ball 524 along the radial direction of the second connecting body 521 and achieving reliable engagement of the first connecting head 51 and the second connecting head 52. When the first connector 51 and the second connector 52 are disengaged, under the elastic action of the limiting spring 526, the limiting sleeve 525 can switch to the unlocked position to release the contact with the steel ball 524, so that the steel ball 524 can move radially along the second connecting body 521 and release the contact with the slot 5112 under the action of external force, thereby realizing the rapid disconnection of the first connector 51 and the second connector 52.

[0086] Furthermore, at least a portion of the inner wall of the limiting sleeve 525 protrudes towards the center of the second connecting body 521 to form a first flange 5251. In the locked state, the first flange 5251 abuts against the steel ball 524, and in the unlocked state, the first flange 5251 releases contact with the steel ball 524. Furthermore, at least a portion of the outer wall of the second connecting body 521 protrudes away from the center of the second connecting body 521 to form a second flange 5213. The two ends of the limiting spring 526 abut against the first flange 5251 and the second flange 5213, respectively. Through the extension and retraction of the limiting spring 526, the limiting sleeve 525 can move relative to the second connecting body 521, thereby enabling the limiting sleeve 525 to switch between the locked and unlocked positions.

[0087] In some optional embodiments of this application, the first connecting body 511 is provided with a first channel 5111, and the second connecting body 521 is provided with a second channel 5211; the first connector 51 further includes a first valve port 512 and a first valve core 513, the first valve port 512 is disposed on the inner wall of the first channel 5111, and the first valve core 513 is movably connected to the inner wall of the first channel 5111 to block or unblock the first valve port 512; the second connector 52 further includes a second valve port 522 and a second valve core 523, the second valve port 522 is disposed on the inner wall of the second channel 5211, and the second valve core 523... It is movably connected to the inner wall of the second channel 5211 to block or unblock the second valve port 522; when the first connector 51 and the second connector 52 are engaged, the first valve core 513 and the second valve core 523 abut against each other, so that the first valve core 513 and the second valve core 523 respectively unblock the first valve port 512 and the second valve port 522; when the first connector 51 and the second connector 52 are disengaged, the first valve core 513 and the second valve core 523 disengage, so that the first valve core 513 and the second valve core 523 respectively block the first valve port 512 and the second valve port 522.

[0088] In this embodiment, the first connector 51 is provided with a first valve port 512 and a first valve core 513, and the second connector 52 is provided with a second valve port 522 and a second valve core 523. Thus, when the first connector 51 and the second connector 52 are inserted together, the first valve core 513 and the second valve core 523 abut against each other, pushing the first valve core 513 away from the first valve port 512 to release the blockage of the first valve port 512. Simultaneously, it pushes the second valve core 523 away from the second valve port 522 to release the blockage of the second valve port 522, thereby achieving air passage connection between the first connector 51 and the second connector 52. When the first connector 51 and the second connector 52 are inserted together, the first valve core 513 and the second valve core 523 are released from contact and reset, so that the first valve core 513 blocks the first valve port 512 and the second valve core 523 blocks the second valve port 522, thereby preventing gas in the pipeline from leaking from the first connector 51 and the second connector 52.

[0089] Furthermore, the first valve port 512 is a first annular protrusion disposed on the inner wall of the first channel 5111. The first valve core 513 includes a first valve core body 5131, a first valve core support 5132, a first valve core spring 5133, and a first spring seat 5134. The first spring seat 5134 is fixedly connected to the inner wall of the first channel 5111, the first valve core support 5132 is slidably connected to the inner wall of the first channel 5111, and the first valve core body 5131 is fixedly connected to the first... The valve core support 5132 and the first valve core body 5131 are used to block the first annular protrusion. The two ends of the first valve core spring 5133 abut against the first valve core support 5132 and the first spring seat 5134 respectively. Through the elastic action of the first valve core spring 5133, the first valve core support 5132 slides relative to the inner wall of the first channel 5111 and drives the first valve core body 5131 to move closer to or away from the first annular protrusion, thereby realizing the blocking and unblocking of the first valve port 512. Similarly, the second valve port 522 is a second annular protrusion disposed on the inner wall of the second channel 5211. The second valve core 523 includes a second valve core body 5231, a second valve core support 5232, a second valve core spring 5233, and a second spring seat 5234. The second spring seat 5234 is fixedly connected to the inner wall of the second channel 5211, the second valve core support 5232 is slidably connected to the inner wall of the second channel 5211, and the second valve core body 5231 is fixedly connected to the second valve. The core support 5232 and the second valve core body 5231 are used to block the second annular protrusion. The two ends of the second valve core spring 5233 abut against the second valve core support 5232 and the second spring seat 5234, respectively. Through the elastic action of the second valve core spring 5233, the second valve core support 5232 slides relative to the inner wall of the second channel 5211 and drives the second valve core body 5231 to move closer to or away from the second annular protrusion, thereby realizing the blocking and unblocking of the second valve port 522.

[0090] In some optional embodiments of this application, the gas filling device 100 further includes a filter 2, which is disposed in the filling pipeline and located upstream of the pressure regulating valve 1. The filter 2 is used to filter and purify the gas. Thus, by providing the filter 2, the gas in the filling pipeline can be filtered, and impurities, bacteria, moisture, etc., in the gas can be removed, improving the cleanliness of the gas. Furthermore, since the filter 2 is located upstream of the pressure regulating valve 1, impurities in the gas can be prevented from entering the pressure regulating valve 1, effectively protecting the pressure regulating valve 1 and helping to extend its service life.

[0091] Furthermore, the filter 2 includes an end cap 21, a filter element support 22, and a filter element 23. The filter element support 22 is disposed inside the end cap 21, and the filter element 23 is disposed within the filter element support 22. A second air inlet channel 24 is formed between the filter element 23 and the end cap 21, and a second air outlet channel 25 is disposed within the filter element 23. Thus, the gas entering the second air inlet channel 24 is filtered and purified by the filter element 23 and then flows out through the second air outlet channel 25 and is output to the pressure regulating valve 1.

[0092] It should be noted that the type of filter element 23 is not limited in the embodiments of this application, and those skilled in the art can make adjustments according to actual needs. In one embodiment, the filter element 23 is HEPA (High Efficiency Particulate Air Filter) paper. Furthermore, the filter 2 and the pressure regulating valve 1 can be separate or integrated. It is understood that when the filter 2 and the pressure regulating valve 1 are integrated, not only can installation space be saved, but the assembly process can also be simplified. Specifically, the end cap 21 is detachably connected to the valve seat 11, the second air inlet channel 24 of the filter 2 communicates with the first air inlet channel 111 of the valve seat 11, and the second air outlet channel 25 communicates with the air inlet 12121 of the valve body 12.

[0093] In some optional embodiments of this application, the gas filling device 100 further includes a pressure gauge 3, which is disposed in the filling pipeline and downstream of the pressure regulating valve 1. The pressure gauge 3 is used to monitor the gas pressure. Thus, by including the pressure gauge 3, the gas pressure in the filling pipeline can be monitored, facilitating real-time pressure monitoring and adjustment by the operator. Since the pressure gauge 3 is located downstream of the pressure regulating valve 1, the outlet pressure of the pressure regulating valve 1 can be accurately monitored, better adapting to different filling devices 300.

[0094] It should be noted that pressure gauge 3 can be either an analog or digital pressure gauge. Furthermore, pressure gauge 3 and pressure regulating valve 1 can be either separate units or integrated. Understandably, when pressure gauge 3 and pressure regulating valve 1 are integrated, it not only saves installation space but also simplifies the assembly process.

[0095] Furthermore, when the gas filling equipment 100 is used in scenarios with high gas pressure, such as oxygen filling, the components of the gas filling equipment 100, such as the connecting pipe 4, connecting structure 5, pressure regulating valve 1, filter 2, and pressure gauge 3, can be made of impact-resistant and corrosion-resistant materials, such as 304 stainless steel or 316 stainless steel. This not only improves the impact resistance of the gas filling equipment 100 but also its corrosion resistance, meaning it can be used not only to transport high-pressure oxygen but also other corrosive or oxidizing gases.

[0096] In summary, the gas filling equipment provided in this application has at least the following advantages:

[0097] In this embodiment of the application, by setting a pressure regulating valve on the filling pipeline, the pressure of the gas in the filling pipeline can be adjusted, thereby better adapting to different filling devices and improving the versatility of the gas filling equipment.

[0098] Reference Figure 7 The diagram shows a structural schematic of a gas filling system provided in an embodiment of this application. Figure 7 As shown in the illustration, this application also provides a gas filling system, including: a gas supply device 200, a device to be filled 300, and the aforementioned gas filling device 100; the gas filling device 100 is disposed between the gas supply device 200 and the device to be filled 300 and is connected to both the gas supply device 200 and the device to be filled 300. Specifically, the input end of the filling pipeline of the gas filling device 100 is connected to the gas supply device 200, and the output end is connected to the device to be filled 300, thereby realizing the connection between the gas supply device 200 and the device to be filled 300. In this way, by setting up the gas filling device 100, and the gas filling device 100 including a pressure regulating valve 1, the gas pressure of the filling pipeline can be adjusted to a suitable range, thereby adapting to devices to be filled 300 with different filling pressures.

[0099] It should be noted that in this embodiment, the structure of the gas filling device 100 is the same as that of the gas filling device 100 in any of the above embodiments, and its beneficial effects are also similar, so it will not be described in detail here. In addition, the gas supply device 200 in this embodiment includes, but is not limited to, oxygen generators, high-pressure oxygen cylinders, etc., and the device to be filled 300 includes, but is not limited to, disposable oxygen bags, portable refillable oxygen cylinders, etc., and is not limited here. Those skilled in the art can make adjustments according to actual needs.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0101] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A gas filling apparatus, characterized by, The application is applied to oxygen filling, including filling pipeline, the input end of the filling pipeline is connected with gas supply equipment, the output end is connected with the device to be filled, the output pressure of the gas supply equipment is greater than the output pressure of the device to be filled, and the filling pipeline is provided with a pressure regulating valve with pressure regulating function.

2. The gas filling apparatus according to claim 1, characterized by, The pressure regulating valve comprises a valve seat, a valve body, an adjusting handle and a locking mechanism, and the axis of the valve body is the first direction; The valve body comprises a bracket and a valve rod assembly, the bracket is fixedly connected to the valve seat, and the valve rod assembly is movably connected to the bracket; The adjusting handle is sleeved on one end of the bracket away from the valve seat and can move along the first direction, and the adjusting handle is in transmission connection with the valve rod assembly; The locking mechanism comprises a first locking mechanism and / or a second locking mechanism; The first locking mechanism is connected with the adjusting handle and the bracket respectively to limit the rotation of the adjusting handle around the first direction; The second locking mechanism is connected with the adjusting handle and the valve rod assembly respectively to limit the movement of the adjusting handle along the first direction.

3. The gas filling apparatus according to claim 2, characterized in that, The first locking mechanism comprises a limiting protrusion and a limiting groove extending along the first direction; The limiting protrusion is arranged on one of the adjusting handle or the bracket, the limiting groove is arranged on the other one of the adjusting handle or the bracket, and the limiting protrusion is embedded in the limiting groove to limit the rotation of the adjusting handle around the first direction.

4. The gas filling apparatus according to claim 3, characterized by The adjusting handle comprises a first top wall and a first peripheral wall arranged around the first top wall, and the limiting protrusion is arranged on one side of the first peripheral wall away from the first top wall; The bracket is provided with an annular boss at the corresponding position of the first peripheral wall, and the limiting groove is arranged on one side of the annular boss close to the first peripheral wall.

5. The gas filling apparatus according to claim 4, characterized in that, The limiting protrusion is provided with a plurality of limiting protrusions, and the plurality of limiting protrusions are arranged at intervals along the circumference of the first peripheral wall; The limiting groove is provided with a plurality of limiting grooves, and the plurality of limiting grooves are arranged at intervals along the circumference of the annular boss, and one limiting protrusion is embedded in one limiting groove.

6. The gas filling apparatus according to any one of claims 4-5, characterized in that, The second locking mechanism comprises a limiting piece, a first limiting hole and a second limiting hole; The first limiting hole is arranged on the first top wall; The second limiting hole is arranged on one end of the valve rod assembly close to the first top wall; The limiting piece is arranged through the first limiting hole, the second limiting hole and in cooperation with the first limiting hole and the second limiting hole to limit the movement of the adjusting handle along the first direction.

7. The gas filling apparatus according to claim 6, characterized in that, The cooperation length of the limiting piece and the second limiting hole in the first direction is a first length, and the length of the limiting protrusion in the first direction is a second length, and the second length is less than the first length.

8. The gas filling apparatus according to claim 1, characterized by The filling pipeline comprises a connecting pipe connected with the pressure regulating valve; The gas filling equipment further comprises a connecting structure, the connecting structure comprises a first connecting head and a second connecting head, the second connecting head is arranged on the pressure regulating valve, the first connecting head is arranged on one end of the connecting pipe close to the pressure regulating valve, and the first connecting head is in cooperation with the second connecting head.

9. The gas filling apparatus according to claim 8, characterized in that, The first connecting head comprises a first connecting body, and a clamping groove is arranged in the circumference of the first connecting body; The second connecting head comprises a second connecting body, a limiting structure and a plurality of steel balls, a plurality of mounting holes are arranged in the circumference of the second connecting body at intervals, one steel ball is movably connected to one mounting hole, the limiting structure is sleeved on the second connecting body, and the limiting structure is used for limiting the steel balls; When the first connecting head and the second connecting head are matched and plugged, the limiting structure limits the steel balls, the steel balls are clamped with the clamping groove, when the first connecting head and the second connecting head are unplugged, the limiting structure releases the limitation on the steel balls, and the steel balls are released from the clamping with the clamping groove.

10. The gas filling apparatus according to claim 9, characterized by The limiting structure comprises a limiting sleeve and a limiting spring; The limiting sleeve is sleeved on the second connecting body, the limiting sleeve has a locking position and an unlocking position, at the locking position, the limiting sleeve abuts against the steel balls to limit the steel balls, at the unlocking position, the limiting sleeve is released from abutting against the steel balls to release the limitation on the steel balls; The limiting spring is arranged between the limiting sleeve and the second connecting body, and under the elastic action of the limiting spring, the limiting sleeve can be switched between the locking position and the unlocking position.

11. The gas filling apparatus according to any one of claims 9-10, characterized in that, The first connecting body is provided with a first channel, and the second connecting body is provided with a second channel; The first connecting head further comprises a first valve port and a first valve core, the first valve port is arranged on the inner wall of the first channel, and the first valve core is movably connected to the inner wall of the first channel to block or unblock the first valve port; the second connecting head further comprises a second valve port and a second valve core, the second valve port is arranged on the inner wall of the second channel, and the second valve core is movably connected to the inner wall of the second channel to block or unblock the second valve port; When the first connecting head and the second connecting head are matched and plugged, the first valve core and the second valve core abut against each other to make the first valve core and the second valve core unblock the first valve port and the second valve port respectively; when the first connecting head and the second connecting head are unplugged, the first valve core and the second valve core are released from abutting against each other to make the first valve core and the second valve core block the first valve port and the second valve port respectively.

12. The gas filling apparatus according to claim 1, characterized by The gas filling device further comprises a filter, the filter is arranged in the filling pipeline and located upstream of the pressure regulating valve, and the filter is used for filtering and purifying the gas.

13. The gas filling apparatus according to claim 12, characterized in that, The filter and the pressure regulating valve are in an integrated arrangement structure.

14. The gas filling apparatus according to claim 1, characterized by, The gas filling device further comprises a pressure gauge, the pressure gauge is arranged in the filling pipeline and located downstream of the pressure regulating valve, and the pressure gauge is used for monitoring the pressure of the gas.

15. The gas filling apparatus according to claim 14, characterized in that, The pressure gauge and the pressure regulating valve are in an integrated arrangement structure.

16. A gas filling system characterized by, It comprises: a gas supply device, a device to be filled, and the gas filling device of any one of claims 1-15; The first connecting head comprises a first connecting body, and a clamping groove is arranged in the circumference of the first connecting body; The gas filling device is arranged between the gas supply device and the device to be filled and communicates with the gas supply device and the device to be filled.

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