A safe oxygen valve station

Abstract

The present invention discloses a safe oxygen valve station, which relates to the technical field of oxygen valves and aims to solve the technical problem that the existing oxygen valves have insufficient sealing and are affected by pressure fluctuations, resulting in the use effect and service life of the oxygen valves being limited. The station includes a housing assembly, a first nut arranged above the housing assembly, and a screw located in the first nut. The present invention cooperates with a fixing assembly and a docking assembly, so that the device can reduce the loss of the internal sealing structure of the device through the cooperation of a pushing assembly and a locking assembly, avoid direct rotational friction between the pushing assembly and the housing assembly components, and thus ensure the service life of the device. At the same time, the locking assembly can fix the position of the valve core assembly in the static state and the use state, further reducing the pressure fluctuation inside the device and further ensuring the use effect of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen valves, and more particularly to a safe oxygen valve station. Background Art

[0002] Oxygen valve station, also known as oxygen valve station, involves key valves and pipeline components in the oxygen supply system. Oxygen valve station is a device used for centralized management and distribution of oxygen. It is composed of various valves, pressure gauges and delivery pipelines. Oxygen valves are mainly responsible for controlling and regulating the pressure and flow of oxygen (as well as other gases such as nitrogen, hydrogen, argon, etc.) released from high-pressure gas cylinders. According to different uses and structures, oxygen valves are subdivided into many types, including oxygen pressure reducing valves (commonly known as oxygen meters), cut-off valves (such as stop valves, ball valves, etc.) and check valves, among which oxygen pressure reducing valves are the most widely used.

[0003] However, there are some urgent problems to be solved in the existing oxygen valves. On the one hand, the output pressure of the pressure reducing valve may fluctuate in certain usage scenarios, and the current design does not add a locking structure to address this pressure fluctuation phenomenon, which may cause the valve core to move accidentally during adjustment and use, thereby affecting the stability of pressure control. On the other hand, insufficient sealing is also a major hidden danger. The rotating adjustment components inside the valve core and the parts connected to the external hose will produce friction with the inside of the valve body during rotation. Under long-term use, this friction can easily cause wear of the valve core and seals, thereby weakening the sealing effect. In addition, the design of the connection part also limits the flexibility of the oxygen valve, because when it is necessary to replace connectors of different sizes or materials, it is often necessary to replace and adjust the entire oxygen valve, which greatly limits the actual application effect of the valve body. In view of this, we propose a safe oxygen valve station. Summary of the invention

[0004] The purpose of the present invention is to provide a safe oxygen valve station to solve the technical problems that the existing oxygen valves have insufficient sealing and are affected by pressure fluctuations, resulting in the use effect and service life of the oxygen valves being limited.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a safe oxygen valve station, comprising a quick shut-off valve, a pressure differential regulating valve, a pressure regulating valve, a nitrogen automatic switching valve, a nitrogen shut-off valve, an oxygen shut-off valve, and an oxygen filter, and also comprising a valve mechanism, comprising a housing assembly, a first nut arranged above the housing assembly, a screw rod located in the first nut, a knob located above the screw rod, a push assembly, a valve core assembly, and a locking assembly, wherein the push assembly is located at the bottom end of the screw rod, the valve core assembly is connected to the bottom of the push assembly, and the locking assembly is located behind the housing assembly; and a connecting mechanism, comprising a first conduit, a pressure gauge arranged outside the first conduit, a second conduit connected to the first conduit through a thread and a second nut, a fixing assembly, a docking assembly, and a third nut, wherein the third thread is located outside the second conduit, the fixing assembly is arranged at one end of the second conduit, and the docking assembly is fixedly connected in the second conduit.

[0006] The present invention cooperates with the fixing component and the docking component so that the device can reduce the loss of the internal sealing structure of the device through the cooperation of the pushing component and the locking component, avoids the direct rotational friction between the pushing component and the shell component parts, and thus ensures the service life of the device. At the same time, the locking component can fix the position of the valve core component in the static state and the use state, further reducing the pressure fluctuation inside the device and further ensuring the use effect of the device.

[0007] Preferably, the top of the housing assembly is fixedly connected to the bottom of the first nut, the inner wall of the first nut is threadedly connected to the screw rod, the top end of the screw rod is fixedly connected to the bottom of the knob, the bottom end of the screw rod is fixedly connected to the top of the pushing assembly, the bottom of the pushing assembly is fixedly connected to the top of the valve core assembly, and the rear of the valve core assembly is mutually clamped with the locking assembly.

[0008] Preferably, the number of the first conduits is two, and the two first conduits are respectively connected to the two pressure gauges, one end of the first conduit is connected to the second conduit through a thread and a second nut, the other end of the second conduit is fixedly connected to a plurality of fixing components, the outer wall of the second conduit overlaps the inner wall of the third nut, and the inner wall of the second conduit is fixedly connected to the docking component; the two first conduits are respectively connected to the two sides of the shell component.

[0009] Preferably, the shell assembly includes a valve body, a sealing groove is provided below the inner wall of the valve body, the sealing groove is composed of two groove bodies, two limiting grooves are provided in the sealing groove, an air inlet hole is provided on one side of the valve body, a circulation hole is provided below the inner wall of the air inlet hole, an exhaust groove is provided on the other side of the valve body, the air inlet hole is connected with the exhaust groove through the circulation hole; the pushing assembly is slidably connected in the sealing groove, the valve core assembly is slidably connected in the circulation hole, and both sides of the valve body are respectively connected with two first conduits.

[0010] Preferably, the pushing assembly includes a first sealing plate, a sealing strip is arranged on the outside of the first sealing plate, a first bearing is clamped at the bottom of the first sealing plate, a first rotating shaft is sleeved in the first bearing, the bottom end of the first rotating shaft is fixedly connected to the top of the spring, the bottom end of the spring is fixedly connected to the top of the second sealing plate, and two limit blocks are fixedly connected to the outside of the second sealing plate.

[0011] Preferably, the first sealing plate is slidably connected in the sealing groove located above, the second sealing plate is slidably connected in the sealing groove located below, the second sealing plate is slidably connected in the limit groove through a limit block, the top of the first sealing plate is fixedly connected to the bottom end of the screw rod, and the bottom of the second sealing plate is fixedly connected to the top of the valve core assembly.

[0012] Preferably, the valve core assembly includes a sealing block, the bottom of the sealing block is fixedly connected to the top of the first valve core, the bottom of the first valve core is fixedly connected to the second valve core, and a slot is provided at the rear of the sealing block; the sizes of the sealing block and the second valve core are both adapted to the size of the flow hole, the top of the sealing block is fixedly connected to the bottom of the second sealing plate, and the sealing block is clamped with the locking assembly via the slot.

[0013] Preferably, the locking assembly includes a torsion block, the front side of the torsion block is fixedly connected to a rotating rod, the other end of the rotating rod is fixedly connected to a rotating cylinder, the outside of the rotating cylinder is fixedly connected to a clamping block, and the clamping block is semi-annular; the torsion block is clamped on the back side of the valve body, and the shape of the clamping block is adapted to the shape of the clamping groove opened behind the sealing block.

[0014] Preferably, the fixing assembly includes a fixing block, both sides of the fixing block are fixedly connected with a second rotating shaft, and the two second rotating shafts are sleeved with a second bearing, and the two second bearings are respectively clamped with two brackets, the second rotating shaft is sleeved with a coil spring, the two ends of the coil spring are respectively fixedly connected with the second rotating shaft and the second bearing, the two brackets are connected to the same threaded shell, the inner wall of the threaded shell is fixedly connected with a pressing block, the pressing block is cylindrical, and the cross-section of the pressing block is conical; the fixing block is fixedly connected to one end of the second conduit.

[0015] Preferably, the docking assembly includes a sealing tube, a connecting tube is fixedly connected inside the sealing tube, the other end of the connecting tube is connected to the mounting tube, the mounting tube is conical, a plurality of expansion rings are fixedly connected outside the mounting tube, a plurality of docking tubes are fixedly connected to the inner wall of the mounting tube, and the plurality of expansion rings are connected through a plurality of docking tubes; the connecting tube is fixedly connected to the second conduit through the sealing tube, the connecting tube is connected to the second conduit, and the outer wall shape of the mounting tube is adapted to the inner wall shape of the pressing block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention designs a locking assembly, a docking assembly and a fixing assembly. During installation, one end of the external hose is inserted into the second conduit, and then the third nut is rotated to fix the fixing assembly. When releasing the gas, the knob is rotated counterclockwise so that the knob drives the screw rod to rotate. At this time, the valve core assembly is squeezed by the push assembly and slides downward in the shell assembly. The gas in the first conduit on the left can enter the shell assembly and quickly flow into the first conduit on the right. Then, the locking assembly can be rotated to fix the position of the valve core assembly for a second time. Through the cooperation of the fixing assembly and the docking assembly, the device can reduce the loss of the internal sealing structure of the device through the cooperation of the push assembly and the locking assembly, avoid the direct rotational friction between the push assembly and the shell assembly components, and thus ensure the service life of the device. At the same time, the locking assembly can be used to fix the position of the valve core assembly in the static state and the use state, further reducing the pressure fluctuation inside the device and further ensuring the use effect of the device.

[0017] 2. The present invention also designs a fixing component and a docking component. During installation, one end of the external hose needs to be inserted into the second conduit and the inner wall of the hose is ensured to dock with the outer wall of the mounting tube, so that the expansion ring outside the mounting tube is squeezed and the pressure is transmitted to the position of the expansion ring that is not squeezed through the docking tube. At this time, the expansion ring that is not subjected to pressure will expand and deform rapidly, thereby filling the space between the external hose that is not squeezed by the pressing block and the mounting tube, so that the device can not only dock external hoses of different shapes and sizes, but also automatically expand and fill the position where there may be gaps after the docking process is completed, thereby avoiding oxygen leakage during use, thereby improving the safety of the device during use.

[0018] 3. The present invention also designs a pushing component, a valve core component and a locking component. When the knob is turned to rotate the screw rod, the screw rod will rotate on its own and push the first sealing plate downward under the action of the internal thread of the first nut. In the process of pushing the second sealing plate downward by the spring, the second sealing plate is in a state of vertical up and down movement to avoid excessive friction with the sealing groove. At the same time, when the torsion block is rotated, the torsion block will drive the rotating cylinder and the clamping block to rotate through the rotating rod. Since the clamping block is semi-annular, it will completely enter the clamping groove when it rotates one hundred and eighty degrees, thereby completing secondary fixation of the sealing block, so that the device can avoid the second sealing block from rotating and moving up and down at the same time during the adjustment process, reducing the loss of the second sealing block, and when fixing, since the arc-shaped surfaces of the clamping block and the clamping groove are completely in contact, the locking effect of the clamping block on the sealing block is guaranteed, thereby improving the stability and safety of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the valve mechanism structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the valve mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the shell assembly of the present invention.

[0023] Figure 5 It is a schematic diagram of the exploded structure of the pushing component of the present invention.

[0024] Figure 6 It is a schematic diagram of the connecting mechanism structure of the present invention.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the connecting mechanism of the present invention.

[0026] Figure 8 It is a schematic diagram of the cross-sectional structure of the first conduit of the present invention.

[0027] Fig. 9 It is a schematic diagram of the exploded structure of the fixing assembly of the present invention.

[0028] Fig.10 It is a schematic diagram of the cross-sectional structure of the docking assembly of the present invention.

[0029] Explanation of the numbers in the figure: 1. Valve mechanism; 2. Connecting mechanism; 3. Quick shut-off valve; 4. Pressure difference regulating valve; 5. Pressure regulating valve; 6. Nitrogen automatic switching valve; 7. Nitrogen shut-off valve; 8. Oxygen shut-off valve; 9. Oxygen filter; 101. Housing assembly; 102. First nut; 103. Screw rod; 104. Knob; 105. Push assembly; 106. Valve core assembly; 107. Locking assembly; 1011. Valve body; 1012. Sealing groove; 1013. Limiting groove; 1014. Air inlet; 1015. Flow hole; 1016. Exhaust groove; 1051. First sealing plate; 1052. First bearing; 1053. First rotating shaft; 1054. Spring; 1055. Second sealing plate; 1056. Limiting groove block; 1061, sealing block; 1062, slot; 1063, first valve core; 1064, second valve core; 1071, twist block; 1072, rotating rod; 1073, rotating cylinder; 1074, block; 201, first conduit; 202, pressure gauge; 203, thread; 204, second nut; 205, second conduit; 206, third nut; 207, fixing assembly; 208, docking assembly; 2071, fixing block; 2072, second rotating shaft; 2073, second bearing; 2074, bracket; 2075, coil spring; 2076, threaded shell; 2077, pressing block; 2081, sealing tube; 2082, connecting tube; 2083, mounting tube; 2084, expansion ring; 2085, docking tube. DETAILED DESCRIPTION

[0030] like Figures 1 to 10As shown, the present invention relates to a safe oxygen valve station, including a quick shut-off valve 3, a pressure differential regulating valve 4, a pressure regulating valve 5, a nitrogen automatic switching valve 6, a nitrogen shut-off valve 7, an oxygen shut-off valve 8, an oxygen filter 9, and also includes a valve mechanism 1, including a housing assembly 101, a first nut 102 arranged above the housing assembly 101, a screw rod 103 located in the first nut 102, a knob 104 located above the screw rod 103, a push assembly 105, a valve core assembly 106 and a locking assembly 107, wherein the push assembly 105 is located at the bottom end of the screw rod 103, and the valve core assembly 106 The locking assembly 107 is connected to the bottom of the pushing assembly 105 and is located at the rear of the housing assembly 101; and the connecting mechanism 2 includes a first conduit 201, a pressure gauge 202 arranged outside the first conduit 201, a second conduit 205 connected to the first conduit 201 through a thread 203 and a second nut 204, a fixing assembly 207, a docking assembly 208 and a third nut 206, wherein the third thread 203 is located outside the second conduit 205, the fixing assembly 207 is arranged at one end of the second conduit 205, and the docking assembly 208 is fixedly connected to the second conduit 205. By designing the locking assembly 107, docking assembly 208 and fixing assembly 207. When installing, insert one end of the external hose into the second conduit 205, then rotate the third nut 206 to fix the fixing assembly 207. When releasing the gas, rotate the knob 104 counterclockwise so that the knob 104 drives the screw rod 103 to rotate. At this time, the valve core assembly 106 will be squeezed by the pushing assembly 105 and slide downward in the housing assembly 101. The gas in the first conduit 201 on the left can enter the housing assembly 101 and quickly flow into the first conduit 201 on the right. Then, the locking assembly 107 can be rotated to lock the valve core assembly 10 6 is fixed at the position for the second time, and through the cooperation of the fixing component 207 and the docking component 208, the device can reduce the loss of the internal sealing structure of the device through the cooperation of the pushing component 105 and the locking component 107, avoid the pushing component 105 directly rotating friction with the shell component 101, and thus ensure the service life of the device. At the same time, the locking component 107 can fix the position of the valve core component 106 in the static state and the use state, further reducing the pressure fluctuation inside the device and further ensuring the use effect of the device.

[0031] In the embodiment of the present invention, the top of the housing assembly 101 is fixedly connected to the bottom of the first nut 102, the inner wall of the first nut 102 is threadedly connected to the screw rod 103, the top of the screw rod 103 is fixedly connected to the bottom of the knob 104, the bottom of the screw rod 103 is fixedly connected to the top of the push assembly 105, the bottom of the push assembly 105 is fixedly connected to the top of the valve core assembly 106, the rear of the valve core assembly 106 is mutually clamped with the locking assembly 107, the number of the first conduits 201 is two, and the two first conduits 201 are respectively connected to the two pressure gauges 202, one end of the first conduit 201 is connected to the second conduit 205 through the thread 203 and the second nut 204, the other end of the second conduit 205 is fixedly connected to a plurality of fixing assemblies 207, the outer wall of the second conduit 205 is overlapped with the inner wall of the third nut 206, and the inner wall of the second conduit 205 is fixedly connected to the docking assembly 208 The two first conduits 201 are respectively connected to the two sides of the shell component 101. By designing the fixing component 207 and the docking component 208, during installation, one end of the external hose needs to be inserted into the second conduit 205 and the inner wall of the hose needs to be docked with the outer wall of the mounting tube 2083, so that the expansion ring 2084 outside the mounting tube 2083 is squeezed and the pressure is transmitted to the position of the expansion ring 2084 that is not squeezed through the docking tube 2085. At this time, the expansion ring 2084 that is not subjected to pressure will expand and deform rapidly, thereby filling the space between the external hose that is not squeezed by the pressing block 2077 and the mounting tube 2083, so that the device can not only dock external hoses of different shapes and sizes, but also automatically expand and fill the position where there may be gaps after the docking process is completed, thereby avoiding oxygen leakage during use, thereby improving the safety of the device during use.

[0032] In the embodiment of the present invention, the housing assembly 101 includes a valve body 1011, a sealing groove 1012 is provided at the lower part of the inner wall of the valve body 1011, the sealing groove 1012 is composed of two groove bodies, two limiting grooves 1013 are provided in the sealing groove 1012, an air inlet hole 1014 is provided on one side of the valve body 1011, a flow hole 1015 is provided at the lower part of the inner wall of the air inlet hole 1014, an exhaust groove 1016 is provided on the other side of the valve body 1011, the air inlet hole 1014 is connected to the exhaust groove 1016 through the flow hole 1015, the push assembly 105 is slidably connected in the sealing groove 1012, the valve core assembly 106 is slidably connected in the flow hole 1015, and the two sides of the valve body 1011 are respectively connected to the two The first conduit 201 is connected, the pushing assembly 105 includes a first sealing plate 1051, a sealing strip is arranged on the outside of the first sealing plate 1051, a first bearing 1052 is clamped at the bottom of the first sealing plate 1051, a first rotating shaft 1053 is sleeved in the first bearing 1052, the bottom end of the first rotating shaft 1053 is fixedly connected to the top of the spring 1054, the bottom end of the spring 1054 is fixedly connected to the top of the second sealing plate 1055, the second sealing plate 1055 is fixedly connected to two limit blocks 1056, the first sealing plate 1051 is slidably connected in the sealing groove 1012 located at the top, the second sealing plate 1055 is slidably connected in the sealing groove 1012 located at the bottom, and the second sealing plate 1051 is slidably connected in the sealing groove 1012 located at the bottom. 055 is slidably connected in the limiting groove 1013 through the limiting block 1056, the upper part of the first sealing plate 1051 is fixedly connected to the bottom end of the screw rod 103, and the lower part of the second sealing plate 1055 is fixedly connected to the upper part of the valve core assembly 106. By designing the pushing assembly 105, the valve core assembly 106 and the locking assembly 107, when the knob 104 is turned to rotate the screw rod 103, the screw rod 103 will rotate and push the first sealing plate 1051 downward under the action of the internal thread 203 of the first nut 102. In the process of pushing the second sealing plate 1055 downward by the spring 1054, the second sealing plate 1055 is in a state of vertical up and down movement to avoid excessive contact with the sealing groove 1012. Friction, at the same time, when the twist block 1071 is rotated, the twist block 1071 will drive the rotating cylinder 1073 and the block 1074 to rotate through the rotating rod 1072. Since the block 1074 is semi-annular, it will completely enter the slot 1062 when it is rotated one hundred and eighty degrees, thereby completing the secondary fixation of the sealing block 1061, so that the device can avoid the second sealing block 1061 from rotating and moving up and down at the same time during the adjustment process, reducing the loss of the second sealing block 1061, and when fixing, since the arc-shaped surfaces of the block 1074 and the slot 1062 are completely in contact, the locking effect of the block 1074 on the sealing block 1061 is guaranteed, thereby improving the stability and safety of using the device.

[0033] As another embodiment of the present invention, the valve core assembly 106 includes a sealing block 1061, the bottom of the sealing block 1061 is fixedly connected to the top of the first valve core 1063, the bottom of the first valve core 1063 is fixedly connected to the second valve core 1064, a card slot 1062 is provided at the rear of the sealing block 1061, the sizes of the sealing block 1061 and the second valve core 1064 are both adapted to the size of the flow hole 1015, the top of the sealing block 1061 is fixedly connected to the bottom of the second sealing plate 1055, the sealing block 1061 is mutually clamped with the locking assembly 107 through the card slot 1062, and the locking assembly 107 includes a torsion block 1071, and the front of the torsion block 1071 is fixed A rotating rod 1072 is connected, and the other end of the rotating rod 1072 is fixedly connected to a rotating cylinder 1073. A clamping block 1074 is fixedly connected to the outside of the rotating cylinder 1073. The clamping block 1074 is semi-annular. The twist block 1071 is clamped on the back of the valve body 1011. The shape of the clamping block 1074 is adapted to the shape of the clamping groove 1062 opened at the rear of the sealing block 1061. When damage occurs at the joints at both ends, it is only necessary to rotate the second nut 204 and loosen the connection between the first conduit 201 and the second conduit 205 through the second nut 204. Then the second conduit 205 can be disassembled, which reduces the difficulty of replacing the accessories of the device and saves the cost of overall replacement due to component damage.

[0034] As another embodiment of the present invention, the fixing assembly 207 includes a fixing block 2071, both sides of the fixing block 2071 are fixedly connected with a second shaft 2072, and the two second shafts 2072 are sleeved with a second bearing 2073, and the two second bearings 2073 are respectively clamped with two brackets 2074, the second shaft 2072 is sleeved with a coil spring 2075, and the two ends of the coil spring 2075 are respectively fixedly connected with the second shaft 2072 and the second bearing 2073, and the two brackets 2074 are connected with the same threaded shell 2076, and the threaded shell 2076 The inner wall of the second conduit 205 is fixedly connected to the pressing block 2077, the pressing block 2077 is cylindrical, and the cross section of the pressing block 2077 is conical. The fixing block 2071 is fixedly connected to one end of the second conduit 205. The docking assembly 208 includes a sealing tube 2081, and a connecting tube 2082 is fixedly connected to the sealing tube 2081. The other end of the connecting tube 2082 is connected to the mounting tube 2083. The mounting tube 2083 is conical, and a plurality of expansion rings 2084 are fixedly connected to the outside of the mounting tube 2083. The inner wall of the mounting tube 2083 is fixedly connected to a plurality of docking tubes 2083. 085, a plurality of expansion rings 2084 are connected through a plurality of butt pipes 2085, a connecting pipe 2082 is fixedly connected to the second conduit 205 through a sealing pipe 2081, the connecting pipe 2082 is connected to the second conduit 205, the outer wall shape of the mounting pipe 2083 is adapted to the inner wall shape of the pressing block 2077, and a coil spring 2075 is arranged outside the second rotating shaft 2072. When the external hose connected needs to be replaced, the third nut 206 needs to be reset, and at this time, the coil spring 2075 will drive the rotating shaft to rotate, so that the bracket 2074 is brought The movable thread shell 2076 and the pressing block 2077 are flipped outward, so as to quickly move away from the external hose, thereby reducing the difficulty of replacing and installing the external hose; by setting a multi-ring expansion ring 2084, on the one hand, it can ensure that the air pressure in the expansion ring 2084 is sufficient, so that the expansion ring 2084 can fill the possible gap position of the external hose after being squeezed by the pressing block 2077; on the other hand, the multi-ring setting can increase the friction between the external hose and the installation tube 2083, thereby ensuring the stability after the external hose is installed.

[0035] Working principle: This embodiment provides a safe oxygen valve station. When in use, the hose used to connect the valve and the pipe of the oxygen cylinder are connected to the two second conduits 205 respectively, and then the knob 104 can be turned to select whether to release the gas.

[0036] During installation, insert one end of the external hose into the second conduit 205, and ensure that the inner wall of the external hose fits outside the docking assembly 208. At this time, it is necessary to grasp the housing assembly 101 and move the third nut 206 toward the direction of the fixing assembly 207, and push the fixing assembly 207 to flip after the third nut 206 contacts the fixing assembly 207, so that the fixing assembly 207 fits outside the external hose, and then rotate the third nut 206 to fix the fixing assembly 207. When releasing the gas, rotate the knob 104 counterclockwise so that when the knob 104 drives the screw rod 103 to rotate, the screw rod 103 simultaneously pushes the push assembly 105 downward. At this time, the valve core assembly 106 will be squeezed by the push assembly 105 and slide downward in the housing assembly 101, and the gas in the first conduit 201 on the left can enter the housing assembly 101 and quickly flow into the first conduit 201 on the right, and then the locking assembly 107 can be rotated to fix the position of the valve core assembly 106 for a second time.

[0037] During installation, one end of the external hose needs to be inserted into the second conduit 205 and ensure that the inner wall of the hose is docked with the outer wall of the mounting tube 2083. At this time, the third nut 206 is rotated so that the third nut 206 squeezes the threaded shell 2076 and flips along the second rotating shaft 2072, while driving the pressing block 2077 to fit outside the external hose. At this time, the external hose is squeezed and slightly deformed, and the pressure will be directly transmitted to the outside of the mounting tube 2083, so that the expansion ring 2084 outside the mounting tube 2083 is squeezed and the pressure is transmitted to the position of the expansion ring 2084 that is not squeezed through the docking tube 2085. At this time, the expansion ring 2084 that is not under pressure will expand and deform rapidly, thereby filling the space between the external hose that is not squeezed by the pressing block 2077 and the mounting tube 2083.

[0038] When the knob 104 is turned to rotate the screw rod 103, the screw rod 103 will rotate and push the first sealing plate 1051 downward under the action of the internal thread 203 of the first nut 102. In the process of pushing the second sealing plate 1055 downward by the spring 1054, the second sealing plate 1055 will slide in the limiting groove 1013 through the limiting block 1056, and the spring 1054 will remain in place in the first bearing 1052, so that the second sealing plate 1055 is in a state of vertical up and down movement to avoid excessive friction with the sealing groove 1012. At the same time, when the torsion block 1071 is rotated, the torsion block 1071 will drive the rotating cylinder 1073 and the clamping block 1074 to rotate through the rotating rod 1072. Since the clamping block 1074 is semi-annular, it will completely enter the clamping groove 1062 when it is rotated one hundred and eighty degrees, thereby completing the secondary fixation of the sealing block 1061.

[0039] When damage occurs at the joints at both ends, it is only necessary to rotate the second nut 204 and loosen the connection between the first conduit 201 and the second conduit 205 through the second nut 204, and then the second conduit 205 can be disassembled.

[0040] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A safe oxygen valve station, oxygen cylinder (3), valve (4) and pipeline assembly (5), characterized in that: The invention comprises a valve mechanism (1), comprising a housing assembly (101), a first nut (102) arranged above the housing assembly (101), a screw rod (103) located in the first nut (102), a knob (104) located above the screw rod (103), a push assembly (105), a valve core assembly (106) and a locking assembly (107), wherein the push assembly (105) is located at the bottom end of the screw rod (103), the valve core assembly (106) is connected to the bottom of the push assembly (105), and the locking assembly (107) is located behind the housing assembly (101); and a connecting mechanism (2), comprising a first conduit (201), a pressure gauge (202) arranged outside the first conduit (201), a screw rod (103) located inside the first nut (102), a knob (104) located above the screw rod (103), a push assembly (105), a valve core assembly (106) and a locking assembly (107), wherein the push assembly (105) is located at the bottom end of the screw rod (103), the valve core assembly (106) is connected to the bottom of the push assembly (105), and the locking assembly (107) is located behind the housing assembly (101); The housing assembly (101) comprises a second conduit (205), a fixing assembly (207), a docking assembly (208) and a third nut (206) connected to the first conduit (201) through a third thread (203) and a second nut (204), wherein the third thread (203) is located outside the second conduit (205), the fixing assembly (207) is arranged at one end of the second conduit (205), and the docking assembly (208) is fixedly connected inside the second conduit (205); the housing assembly (101) comprises a valve body (1011), a sealing groove (1012) is provided below the inner wall of the valve body (1011), the sealing groove (1012) is composed of two groove bodies, two limiting grooves (1013) are provided in the sealing groove (1012), and the valve body ( An air inlet (1014) is provided on one side of the valve body (1011), a flow hole (1015) is provided below the inner wall of the air inlet (1014), an exhaust groove (1016) is provided on the other side of the valve body (1011), the air inlet (1014) is connected to the exhaust groove (1016) through the flow hole (1015); the push assembly (105) is slidably connected in the sealing groove (1012), the valve core assembly (106) is slidably connected in the flow hole (1015), and the two sides of the valve body (1011) are respectively connected to the two first conduits (201); the valve core assembly (106) comprises a sealing block (1061), the bottom of the sealing block (1061) is connected to the first valve core (1063) The top end is fixedly connected, the bottom end of the first valve core (1063) is fixedly connected to the second valve core (1064), and a clamping groove (1062) is provided at the rear of the sealing block (1061); the locking assembly (107) comprises a torsion block (1071), the front of the torsion block (1071) is fixedly connected to a rotating rod (1072), the other end of the rotating rod (1072) is fixedly connected to a rotating cylinder (1073), the outside of the rotating cylinder (1073) is fixedly connected to a clamping block (1074), and the clamping block (1074) is semi-annular; the torsion block (1071) is clamped on the back of the valve body (1011), and the shape of the clamping block (1074) is compatible with the shape of the clamping groove (1062) provided at the rear of the sealing block (1061);The fixing assembly (207) comprises a fixing block (2071), both sides of the fixing block (2071) are fixedly connected to second rotating shafts (2072), the two second rotating shafts (2072) are sleeved with second bearings (2073), and the two second bearings (2073) are respectively clamped with two brackets (2074), the second rotating shaft (2072) is sleeved with a coil spring (2075), the two ends of the coil spring (2075) are respectively fixedly connected to the second rotating shaft (2072) and the second bearing (2073), the two brackets (2074) are connected to the same threaded shell (2076), and the inner wall of the threaded shell (2076) is connected to the pressing block (2077). The pressing block (2077) is cylindrical, and the cross section of the pressing block (2077) is conical; the docking assembly (208) comprises a sealing tube (2081), a connecting tube (2082) is fixedly connected inside the sealing tube (2081), the other end of the connecting tube (2082) is connected to a mounting tube (2083), the mounting tube (2083) is conical, a plurality of expansion rings (2084) are fixedly connected outside the mounting tube (2083), a plurality of docking tubes (2085) are fixedly connected to the inner wall of the mounting tube (2083), and the plurality of expansion rings (2084) are connected via the plurality of docking tubes (2085). ; 2. The safe oxygen valve station according to claim 1, characterized in that: The upper part of the housing assembly (101) is fixedly connected to the lower part of the first nut (102); the inner wall of the first nut (102) is threadedly connected to the screw rod (103); the top end of the screw rod (103) is fixedly connected to the lower part of the knob (104); the bottom end of the screw rod (103) is fixedly connected to the top end of the push assembly (105); the lower part of the push assembly (105) is fixedly connected to the upper part of the valve core assembly (106); and the rear of the valve core assembly (106) is mutually clamped with the locking assembly (107).

3. The safe oxygen valve station according to claim 2, characterized in that: The number of the first conduits (201) is two, and the two first conduits (201) are respectively connected to two pressure gauges (202); one end of the first conduit (201) is connected to the second conduit (205) via a thread (203) and a second nut (204); the other end of the second conduit (205) is fixedly connected to a plurality of fixing components (207); the outer wall of the second conduit (205) overlaps the inner wall of the third nut (206); and the inner wall of the second conduit (205) is fixedly connected to a docking component (208); The two first conduits (201) are respectively connected to two sides of the housing assembly (101).

4. The safe oxygen valve station according to claim 3, characterized in that: The pushing assembly (105) comprises a first sealing plate (1051), a sealing strip is arranged on the outside of the first sealing plate (1051), a first bearing (1052) is clamped at the bottom of the first sealing plate (1051), a first rotating shaft (1053) is sleeved inside the first bearing (1052), the bottom end of the first rotating shaft (1053) is fixedly connected to the top end of a spring (1054), the bottom end of the spring (1054) is fixedly connected to the top of a second sealing plate (1055), and two limit blocks (1056) are fixedly connected to the outside of the second sealing plate (1055).

5. The safe oxygen valve station according to claim 4, characterized in that: The first sealing plate (1051) is slidably connected in the sealing groove (1012) located at the top, the second sealing plate (1055) is slidably connected in the sealing groove (1012) located at the bottom, the second sealing plate (1055) is slidably connected in the limiting groove (1013) via a limiting block (1056), the top of the first sealing plate (1051) is fixedly connected to the bottom end of the screw rod (103), and the bottom of the second sealing plate (1055) is fixedly connected to the top of the valve core assembly (106).

6. The safe oxygen valve station according to claim 5, characterized in that: The sizes of the sealing block (1061) and the second valve core (1064) are both compatible with the size of the circulation hole (1015); the upper part of the sealing block (1061) is fixedly connected to the lower part of the second sealing plate (1055); and the sealing block (1061) is mutually clamped with the locking assembly (107) via the clamping groove (1062).

7. The safe oxygen valve station according to claim 6, characterized in that: The fixing block (2071) is fixedly connected to one end of the second conduit (205).

8. The safe oxygen valve station according to claim 7, characterized in that: The connecting tube (2082) is fixedly connected to the second conduit (205) via the sealing tube (2081); the connecting tube (2082) is in communication with the second conduit (205); and the outer wall shape of the mounting tube (2083) matches the inner wall shape of the pressing block (2077).

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