A gas-liquid two-phase multi-purpose gas cylinder valve

Abstract

The present application discloses a gas-liquid two-phase multi-purpose gas cylinder valve, comprising a main valve body, the main valve body including a gas phase valve and a liquid phase valve, the main valve body being provided with a mutually independent main gas channel and a main liquid channel, the gas phase valve being adapted to control the gas phase fluid from flowing out of the cylinder valve through the main gas channel, the liquid phase valve being adapted to control the liquid phase fluid from flowing out of the cylinder valve through the main liquid channel, a diversion assembly being detachably provided under the main valve body, the diversion assembly being provided with mutually independent and closable diversion gas channels and diversion liquid channels, as well as a one-way closable mixed flow channel for connecting the diversion gas channels and the diversion liquid channels. One object of the present application is to provide a gas-liquid two-phase multi-purpose gas cylinder valve capable of outputting either gas phase fluid or liquid phase fluid alone, as well as a mixed flow of gas phase fluid and liquid phase fluid.

Description

Technical Field

[0001] The present application relates to the field of gas cylinder valves, and in particular to a gas-liquid two-phase multi-purpose gas cylinder valve. Background Art

[0002] Currently, two-phase gas-liquid cylinder valves are used on gas cylinders to transport gas or liquid separately. Gas cylinders are suitable for storing industrial fluids such as oxygen and Freon. These industrial fluids exist as a mixture of gas and liquid within the cylinder (generally, the gas phase is stored in the upper part of the cylinder, and the liquid phase is stored in the lower part). Two-phase gas-liquid cylinder valves can release pure gas and liquid phase fluids through the gas phase valve and liquid phase valve, respectively.

[0003] However, the existing gas-liquid two-phase cylinder valve cannot directly output a mixed fluid of gas phase fluid and liquid phase fluid through the cylinder valve, which is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] One object of the present application is to provide a gas-liquid two-phase multi-purpose gas cylinder valve that can output gas phase fluid or liquid phase fluid separately, as well as a mixed fluid of gas phase fluid and liquid phase fluid.

[0005] In order to achieve the above objectives, the technical solutions adopted in this application are:

[0006] A gas-liquid two-phase multi-purpose gas cylinder valve, comprising a main valve body, the main valve body comprising a gas phase valve and a liquid phase valve, the main valve body being provided with a main gas channel and a main liquid channel which are independent of each other, the gas phase valve being suitable for controlling the gas phase fluid to flow out of the cylinder valve through the main gas channel, the liquid phase valve being suitable for controlling the liquid phase fluid to flow out of the cylinder valve through the main liquid channel, a diverter assembly being detachably provided under the main valve body, the diverter assembly being provided with a diverter gas channel and a diverter liquid channel which are independent of each other and can be closed, and a diverter gas channel and a diverter liquid channel for connecting the diverter gas channel and the diverter liquid channel and And the mixed flow channel can be closed in one direction, the diverter gas channel is suitable for connecting to the main gas channel, the diverter liquid channel is suitable for connecting to the main liquid channel, the diverter component also includes a mixing valve, the mixing valve is suitable for controlling the mixed fluid of liquid and gas to flow out of the bottle valve through the mixed flow channel, and a connecting channel is also provided in the diverter component, the connecting channel has two groups and one end of the connecting channel is suitable for respectively connecting to the diverter gas channel and the diverter liquid channel, and the other end of the connecting channel is respectively connected to the gas phase fluid in the gas cylinder or the liquid phase fluid in the gas cylinder.

[0007] The gas-liquid two-phase multi-purpose bottle valve developed by the inventor of this application can output gas phase fluid alone, liquid phase fluid alone, and mixed fluid of gas and liquid phases, which can achieve the effect of one valve for multiple purposes. In addition, the diversion component is provided with a diversion gas channel and a diversion liquid channel that are independent and closable from each other, which means that the diversion gas channel and the diversion liquid channel are not connected to each other to keep the channels clean. There are many ways to close the diversion gas channel and the diversion liquid channel, such as using a stop valve, a ball valve, etc. to achieve a closing effect. The closed structure is a prior art and will not be described here.

[0008] The one-way closure of the mixing channel is intended to further ensure cleanliness within the diverting gas and liquid channels during use, preventing interference between gaseous and liquid phases. Specifically, the one-way closure of the mixing channel means that fluid in the diverting gas or liquid channel can enter the mixing channel through the one-way closure structure, while fluid in the mixing channel cannot enter the diverting gas or liquid channel through the one-way closure structure. One-way closure structures are conventional technologies, including one-way valves, and will not be described in detail here.

[0009] In a gas cylinder, the gaseous fluid is generally in the upper part of the gas cylinder and the liquid fluid is in the lower part of the gas cylinder. Therefore, one set of connecting channels can be connected to the upper part of the gas cylinder through a connecting pipe for connecting the gaseous fluid in the gas cylinder, and the other set of connecting channels can be connected to the lower part of the gas cylinder through a connecting pipe for connecting the liquid fluid in the gas cylinder.

[0010] It is further preferred that the diversion component includes a first combination part, a second combination part and a third combination part which are connected in sequence from top to bottom, the first combination part is respectively provided with the diversion gas channel and the diversion liquid channel which are independent and closable along the vertical direction, the second combination part is respectively provided with switching channels which are independent of each other along the vertical direction, the third combination part is provided with the mixed flow channel, the upper end of the switching channel is suitable for connecting with the diversion gas channel or the diversion liquid channel, the lower end of the switching channel is suitable for connecting with the mixed flow channel, a switching component is provided in the switching channel, the switching component is suitable for controlling the upward or downward movement of the gas or the liquid, the mixing valve is provided at the end of the mixing channel, and controls the mixed fluid to flow out of the bottle valve through the mixing channel.

[0011] Further preferably, the switching assembly includes a through-tube and a switching cap, the through-tube having two groups, which are respectively arranged in the two groups of switching channels along the vertical direction, and the bottom of the third combination part is vertically provided with two groups of through-tube connecting ports, the through-tube connecting ports are suitable for connecting with the mixed flow channel, the through-tubes are suitable for being respectively installed in the through-tube connecting ports, and the inner wall of the through-tube is suitable for defining the connecting channel; the switching cap is slidably connected to the through-tube in the vertical direction, and a first connecting port is vertically provided in the switching cap, the first connecting port is suitable for connecting with the connecting channel and the diverter gas channel or the diverter liquid channel, and the inner wall of the lower part of the switching channel expands outward radially. The valve body is provided with a plurality of second connecting ports, and the plurality of second connecting ports are provided with a plurality of second connecting ports. The plurality of second connecting ports are provided with a plurality of second connecting ports, and the plurality of second connecting ports are provided with a plurality of second connecting ports. The plurality of second connecting ports are provided with a plurality of second connecting ports, and the plurality of second connecting ports are provided with a plurality of second connecting ports. The plurality of second connecting ports are provided with a plurality of second connecting ports, and the plurality of second connecting ports are provided with a plurality of second connecting ports. The plurality of second connecting ports are provided with a plurality of second connecting ports, and the plurality of second connecting ports are provided with a plurality of second connecting ports. The plurality of second connecting ports are provided with a plurality of second connecting ports. The plurality of second connecting ports are provided with a plurality of second connecting ports. The plurality of second connecting ports are provided with a plurality of second connecting ports.

[0012] It is further preferred that the inner wall of the lower part of the first communicating port expands radially outward to form an expansion portion, the expansion portion and the first communicating port form a step structure, the inner wall of the expansion portion protrudes radially inward to provide a limiting protrusion, the lower end surface of the limiting protrusion is suitable for contacting the upper end surface of the through tube, the upper end surface of the limiting protrusion and the inner wall of the expansion portion define a driving cavity, the gas phase fluid or the liquid phase fluid is suitable for impacting the upper inner wall of the driving cavity and driving the switching cap to move upward.

[0013] Further preferably, the through pipe is further provided with a one-way diaphragm, and the one-way diaphragm is suitable for controlling the fluid from the switching channel to enter the mixed flow channel, and preventing the fluid from entering the mixed flow channel to enter the switching channel.

[0014] Further preferably, the bottom of the through pipe is provided with a thread, and a connecting pipe is provided in the gas cylinder, the connecting pipe has two groups and connects the gas phase fluid and the liquid phase fluid respectively, and the connecting pipe is detachably connected to the through pipe through a thread.

[0015] Further preferably, the diverter gas channel and the diverter liquid channel both include conical channels that are larger at the top and smaller at the bottom, and a one-way ball is provided in the conical channel. The outer wall of the one-way ball is suitable for cooperating with the inner wall of the conical channel to form a closed structure, and the upper part of the one-way ball is connected to a spring, and the spring is suitable for controlling the one-way ball to press the inner wall of the conical channel.

[0016] It is further preferred that the mixed flow channel includes a liquid section, a gas section and a mixing section, the liquid section and the gas section are arranged vertically, and the heads of the liquid section and the gas section are suitable for connecting to the switching channel, the mixing section is arranged horizontally, the tails of the liquid section and the gas section are suitable for connecting to the mixing section, and the middle part of the mixing section is also connected to an outflow section, and the mixed fluid is suitable for flowing out of the bottle valve through the outflow section.

[0017] Further preferably, the gas cylinder valve includes an outer shell, which is suitable for being mounted on the outside of the main valve body and the diverter assembly, and the main valve body and the diverter assembly are detachably connected to the outer shell by threads; a sealing ring is also provided between the main valve body and the outer shell, and the sealing ring is suitable for controlling the sealing between the outer shell and the main valve body.

[0018] Further preferably, a fusible alloy plug is further provided in the main liquid channel, and when the temperature is too high, the fusible alloy plug is adapted to melt and relieve the pressure of the gas cylinder.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) The gas-liquid two-phase multi-purpose bottle valve of the present application can output gas phase fluid alone, liquid phase fluid alone, or mixed fluid of gas and liquid phase through the main gas channel, main liquid channel, and mixed flow channel, achieving the effect of one valve with multiple uses. In addition, the gas phase valve, liquid phase valve, and mixed flow valve can be used to control the liquid phase fluid, gas phase fluid, and mixed fluid to flow out of the bottle valve respectively;

[0021] (2) The main gas channel and the main liquid channel can be kept clean by means of the independent and closable diversion gas channel and diversion liquid channel, as well as the one-way closable mixed flow channel, and the mixed fluid can be prevented from entering the main gas channel or the main liquid channel. In addition, the mixed flow channel can work independently and output the mixed fluid (a mixture of liquid phase fluid and gas phase fluid) as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of an embodiment of a bottle valve of the present application;

[0023] Figure 2 A cross-sectional view of another embodiment of a bottle valve of the present application;

[0024] Figure 3 A cross-sectional view of a top view of an embodiment of a bottle valve of the present application, showing a main gas channel and a main liquid channel;

[0025] Figure 4A schematic diagram of an embodiment of a bottle valve of the present application, showing a mixing valve;

[0026] Figure 5 This is an exploded view of an embodiment of the bottle valve of the present application, showing the first assembly part, the second assembly part and the third assembly part;

[0027] Figure 6 A cross-sectional view of an embodiment of a bottle valve of the present application, showing a switching assembly;

[0028] Figure 7 A schematic diagram of an embodiment of a bottle valve of the present application, showing a diverted gas channel;

[0029] Figure 8a This is a schematic diagram of an embodiment of the bottle valve of the present application, showing that the gas phase valve, the liquid phase valve and the mixing flow valve are all in the closed state;

[0030] Figure 8b This is a schematic diagram of an embodiment of the bottle valve of the present application, showing the gas phase valve or the liquid phase valve in an open state;

[0031] Figure 8c A schematic diagram of an embodiment of a bottle valve of the present application, showing the mixing valve in an open state;

[0032] Figure 9a This is an embodiment of the bottle valve of the present application Figure 8a The schematic diagram of position A in FIG shows that the one-way diaphragm is in the closed state;

[0033] Figure 9b This is an embodiment of the bottle valve of the present application Figure 8c The schematic diagram of position B in FIG shows that the one-way diaphragm is in the open state;

[0034] Figure 10 This is a cross-sectional view of the third assembly portion of an embodiment of the bottle valve of the present application, showing the mixed flow channel.

[0035] Figure: 1, diverter assembly; 11, diverter gas channel; 111, spring; 112, one-way ball; 113, tapered channel; 12, diverter liquid channel; 13, mixed flow channel; 131, liquid section; 132, gas section; 133, mixing section; 1331, outflow section; 14, mixing valve; 15, switching assembly; 151, through pipe; 1511, connecting channel; 1512, one-way diaphragm; 152, switching cap; 1521, first communication port; 1521a, expansion 1522, second connecting port; 1523, protrusion; 1524, limiting protrusion; 1525, driving chamber; 16, first combination part; 17, second combination part; 171, switching channel; 1711, limiting through hole; 18, third combination part; 181, through pipe connecting port; 2, main valve body; 21, gas phase valve; 211, main gas channel; 22, liquid phase valve; 221, main liquid channel; 3, outer shell; 4, sealing ring; 5, fusible alloy plug; 100, connecting pipe. DETAILED DESCRIPTION

[0036] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0039] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0040] The inventor of this application has developed a gas-liquid two-phase multi-purpose gas cylinder valve, one embodiment of which is as follows: Figures 1 to 10 As shown, it includes a main valve body 2, which includes a gas phase valve 21 and a liquid phase valve 22. The main valve body 2 is provided with a main gas channel 211 and a main liquid channel 221 that are independent of each other. The gas phase valve 21 is suitable for controlling the gas phase fluid to flow out of the bottle valve through the main gas channel 211, and the liquid phase valve 22 is suitable for controlling the liquid phase fluid to flow out of the bottle valve through the main liquid channel 221. A diversion component 1 is detachably provided under the main valve body 2. The diversion component 1 is provided with a diversion gas channel 11 and a diversion liquid channel 12 that are independent of each other and can be closed, as well as a diversion gas channel 11 and a diversion liquid channel 12 that are used to connect the diversion gas channel 11 and the diversion liquid channel 12 and can be one-way sealed. The diverter gas channel 11 is suitable for connecting to the main gas channel 211, and the diverter liquid channel 12 is suitable for connecting to the main liquid channel 221. The diverter component 1 also includes a mixing valve 14, which is suitable for controlling the mixed fluid of liquid and gas to flow out of the bottle valve through the mixing channel 13. A connecting channel 1511 is also provided in the diverter component 1. The connecting channel 1511 has two groups and one end of the connecting channel 1511 is suitable for respectively connecting to the diverter gas channel 11 and the diverter liquid channel 12, and the other end of the connecting channel 1511 is respectively connected to the gas phase fluid in the gas cylinder or the liquid phase fluid in the gas cylinder. It is worth mentioning that the gas phase valve 21 is suitable for controlling the gas phase fluid to flow out of the bottle valve through the main gas channel 211, and the liquid phase valve 22 is suitable for controlling the liquid phase fluid to flow out of the bottle valve through the main liquid channel 221. It is an existing technology. By turning the handle wheel on the liquid phase valve 22 or the gas phase valve 21, the valve stem is driven to move, and then the valve core is driven to move, thereby releasing the gas phase fluid or liquid phase fluid in the main gas channel 211 or the main liquid channel 221.

[0041] The gas-liquid two-phase multi-purpose bottle valve developed by the inventor of this application can output gas phase fluid alone, liquid phase fluid alone, and mixed fluid of gas phase and liquid phase, which can achieve the effect of one valve with multiple uses. In addition, a diverter gas channel 11 and a diverter liquid channel 12 are provided in the diverter assembly 1, which are independent and closable. It means that the diverter gas channel 11 and the diverter liquid channel 12 are not connected to each other, so as to keep the channels clean. There are many ways to close the diverter gas channel 11 and the diverter liquid channel 12, such as using a stop valve, a ball valve, etc. to achieve the closing effect. The closed structure is the prior art and will not be repeated here. It is worth mentioning that the cleanliness of the main gas channel 211 and the main liquid channel 221 can be ensured by the independent and closable diverter gas channel 11 and the diverter liquid channel 12, as well as the one-way closable mixed flow channel 13, so as to ensure that the mixed fluid will not enter the main gas channel 211 or the main liquid channel 221. In addition, the mixed flow channel 13 can work alone and output the mixed fluid (a mixture of liquid phase fluid and gas phase fluid) as needed.

[0042] In this specific embodiment, Figure 1As shown, a diversion component 1 is detachably arranged below the main valve body 2, and the gas-phase fluid or liquid-phase fluid is connected to the closable main gas channel 211 and the main liquid channel 221 through two groups of connecting channels 1511 respectively. When the main gas channel 211 and the main liquid channel 221 are closed, the fluid can enter the mixing channel 13 through the one-way closed mixing channel 13 and be mixed, and finally leave the bottle valve under the control of the mixing valve 14.

[0043] The one-way closure of mixing channel 13 is intended to further ensure the cleanliness of diverter gas channel 11 and diverter liquid channel 12 during use and to prevent mutual interference between gaseous or liquid phases. Specifically, the one-way closure of mixing channel 13 means that fluid in diverter gas channel 11 or diverter liquid channel 12 can enter mixing channel 13 through the one-way closure structure, while fluid in mixing channel 13 cannot enter diverter gas channel 11 or diverter liquid channel 12 through the one-way closure structure. One-way closure structures are conventional technologies and include one-way valves, etc., and will not be described in detail here.

[0044] In a gas cylinder, the gas phase fluid is generally in the upper part of the gas cylinder and the liquid phase fluid is in the lower part of the gas cylinder. Therefore, one set of connecting channels 1511 can be connected to the upper part of the gas cylinder through the connecting pipe 100 for communicating the gas phase fluid in the gas cylinder, and the other set of connecting channels 1511 can be connected to the lower part of the gas cylinder through the connecting pipe 100 for communicating the liquid phase fluid in the gas cylinder. Figure 1 shown.

[0045] More preferably, Figure 5 As shown, the diversion component 1 includes a first combination part 16, a second combination part 17 and a third combination part 18 which are connected in sequence from top to bottom. The first combination part 16 is provided with a diversion gas channel 11 and a diversion liquid channel 12 which are independent and closable along the vertical direction, the second combination part 17 is provided with a switching channel 171 which is independent of each other along the vertical direction, and the third combination part 18 is provided with a mixing channel 13. The upper end of the switching channel 171 is suitable for connecting to the diversion gas channel 11 or the diversion liquid channel 12, and the lower end of the switching channel 171 is suitable for connecting to the mixing channel 13. A switching component 15 is provided in the switching channel 171. The switching component 15 is suitable for controlling the upward or downward movement of gas or liquid. The mixing valve 14 is provided at the end of the mixing channel 13 and controls the mixed fluid to flow out of the bottle valve through the mixing channel 13.

[0046] In this specific embodiment, Figure 5 and Figure 6As shown, when the switching component 15 controls the gas or liquid to move upward, the gas or liquid can enter the main gas channel 211 or the main liquid channel 221 through the diverter gas channel 11 and the diverter liquid channel 12; when the switching component 15 controls the gas or liquid to move downward, the diverter gas channel 11 and the diverter liquid channel 12 can be controlled to be in a closed state, and the gas or liquid can enter the mixing channel 13 and flow out of the bottle valve under the control of the mixing valve 14, thereby achieving the purpose of outputting liquid phase fluid, gas phase fluid or gas-liquid mixed fluid, and maintaining the purity of the output fluid to prevent them from interfering with each other.

[0047] More preferably, Figures 7 to 8c As shown, the switching assembly 15 includes a through pipe 151 and a switching cap 152. The through pipe 151 has two groups and is vertically arranged in the two groups of switching channels 171. The bottom of the third combination part 18 is vertically provided with two groups of through pipe connection ports 181. The through pipe connection ports 181 are suitable for connecting to the mixed flow channel 13 (such as Figure 10 As shown), the through pipe 151 is suitable for being installed in the through pipe connecting port 181 respectively, and the inner wall of the through pipe 151 is suitable for defining the connecting channel 1511; the switching cap 152 is slidably connected to the through pipe 151 along the vertical direction, and a first connecting port 1521 is vertically penetrated in the switching cap 152. The first connecting port 1521 is suitable for connecting the connecting channel 1511 and the diverter gas channel 11 or the diverter liquid channel 12. The inner wall of the lower part of the switching channel 171 expands radially outward to form a limiting through hole 1711. The limiting through hole 1711 forms a step structure with the inner wall of the switching channel 171 and the inner wall of the mixed flow channel 13 respectively, and the limiting through hole 1711 forms a step structure with the inner wall of the switching channel 171 and the inner wall of the mixed flow channel 13. The inner diameter of the position-limiting through-hole 1711 is larger than the inner diameter of the switching channel 171 and the inner diameter of the mixing channel 13. A protrusion 1523 is provided on the switching cap 152 to protrude radially outward. A plurality of second communication ports 1522 are provided on the protrusion 1523 in the vertical direction. The protrusion 1523 is adapted to respectively abut the upper and lower end surfaces of the step structure and limit the maximum distance of movement of the switching cap 152, while closing the second communication ports 1522. When the gas phase valve 21, the liquid phase valve 22, and the mixing valve 14 are all in the closed state, the switching cap 152 is located in the middle of the position-limiting through-hole 1711, and the second communication ports 1522 are in the open state. It is worth mentioning that the first communication ports 1521 are adapted to connect the connecting channel 1511 with the diverter gas channel 11 or the diverter liquid channel 12, which means that the first communication ports 1521 can connect the connecting channel 1511 with the diverter gas channel 11; and the first communication ports 1521 can connect the connecting channel 1511 with the diverter liquid channel 12. The limiting through hole 1711 forms a step structure with the inner wall of the switching channel 171 and the inner wall of the mixing channel 13, respectively. Figure 7 and Figure 8a As shown, the maximum moving distance of the switching cap 152 can be limited by the upper and lower end surfaces of the step structure.

[0048] like Figure 8a As shown, at this time, the gas phase valve 21, the liquid phase valve 22, and the mixing valve 14 are all in the closed state, the fluid in the gas cylinder is not flowing, the switching cap 152 is in the middle of the limiting through-hole 1711, and the second connecting port 1522 is in the open state. The fluid exists in the switching channel 171. Since the mixing channel 13 can be closed in one direction, the fluid can enter the mixing channel 13, but the fluid in the mixing channel 13 cannot reversely enter the switching channel 171. At this time, the diverter gas channel 11 or the diverter liquid channel 12 is in the closed state. It is also worth mentioning that since the air pressure on both sides of the switching cap 152 is consistent, the switching cap 152 can be suspended in the middle of the limiting through-hole 1711 due to friction.

[0049] like Figure 8b As shown, at this time, the gas phase valve 21 or the liquid phase valve 22 is in the open state, and the mixing valve 14 is in the open state. Under the drive of the fluid, the diversion gas channel 11 or the diversion liquid channel 12 is in the open state, and the fluid flows along Figure 8b The second connecting port 1522 is in a closed state, and the fluid cannot move downward, thereby entering the mixed flow channel 13. After closing the gas phase valve 21 or the liquid phase valve 22, the switching cap 152 returns to the middle position, and the second connecting port 1522 is in an open state again.

[0050] like Figure 8c As shown, when the mixing valve 14 is opened and the liquid phase valve 22 or the gas phase valve 21 is controlled to be in an open state, the diverter gas channel 11 and the diverter liquid channel 12 are in a closed state, and the fluid can only enter the mixing channel 13 through the second communication port 1522. The direction of fluid movement is as shown in FIG. Figure 8c After closing the mixed flow channel 13, the switching cap 152 returns to the middle position, and the second communication port 1522 is in the open state again.

[0051] More preferably, Figure 8b As shown, the inner wall of the lower portion of the first communication port 1521 expands radially outward to form an expansion portion 1521a, and the expansion portion 1521a forms a step structure with the first communication port 1521. The inner wall of the expansion portion 1521a protrudes radially inward to form a limiting protrusion 1524, and the lower end surface of the limiting protrusion 1524 is suitable for contacting the upper end surface of the through pipe 151 (as shown in FIG. Figure 8aAs shown in FIG. 1 , the upper end surface of the limiting protrusion 1524 and the inner wall of the expansion portion 1521 define a drive cavity 1525. A gaseous or liquid-phase fluid is adapted to impact the upper inner wall of the drive cavity 1525, thereby driving the switching cap 152 upward. The limiting protrusion 1524 is provided to control the switching cap 152 to its lowest position when the gas phase valve 21, the liquid phase valve 22, and the mixing valve 14 are all closed and the switching cap 152 is in the neutral position. The limiting protrusion 1524 thereby controls the switching cap 152 to the middle of the limiting through-hole 1711. When the switching cap 152 is in the neutral position, the second communication port 1522 is open.

[0052] More preferably, Figure 9a and Figure 9b As shown, a one-way diaphragm 1512 is also provided on the through pipe 151. The one-way diaphragm 1512 is suitable for controlling the fluid from the switching channel 171 to enter the mixed flow channel 13, and preventing the fluid from entering the switching channel 171 from the mixed flow channel 13. Figure 9a As shown, due to the structure of the one-way diaphragm 1512, the fluid in the mixed flow channel 13 cannot pass through the one-way diaphragm 1512 into the switching channel 171, while the fluid in the switching channel 171 can push open the one-way diaphragm 1512 and enter the mixed flow channel 13, as shown in FIG. Figure 9b As shown, such an arrangement can keep the diverter gas channel 11 and the diverter liquid channel 12 clean.

[0053] More preferably, Figure 1 As shown, the bottom of the through tube 151 is provided with threads. A connecting tube 100 is provided in the gas cylinder. The connecting tube 100 has two sets, one for connecting the gas phase fluid and the other for connecting the liquid phase fluid. The connecting tube 100 is detachably connected to the through tube 151 via threads. In this specific embodiment, the through tube 151 and the gas phase fluid or liquid phase fluid are connected through the connecting tube 100, which can improve the sealing performance and prevent these fluids from escaping from the joint.

[0054] Further preferably, as shown in the figure, the diverter gas channel 11 and the diverter liquid channel 12 both include a conical channel 113 that is larger at the top and smaller at the bottom, and a one-way ball 112 is arranged in the conical channel 113. The outer wall of the one-way ball 112 is suitable for cooperating with the inner wall of the conical channel 113 to form a closed structure, and the upper part of the one-way ball 112 is connected to a spring 111, which is suitable for controlling the one-way ball 112 to press the inner wall of the conical channel 113.

[0055] A conical channel 113 is provided, which is larger at the top and smaller at the bottom. A one-way ball 112 is provided within the conical channel 113. A spring 111 is provided so that when the gas phase valve 21 and the liquid phase valve 22 are in the closed state, the spring 111 can control the one-way ball 112 to press against the inner wall of the conical channel 113, thereby closing the diverter gas channel 11 and the diverter liquid channel 12. When the gas phase valve 21 or the liquid phase valve 22 is in the open state, the main gas channel 211 and the main liquid channel 221 discharge fluid outward. Therefore, under the action of the fluid, the one-way ball 112 will move upward, thereby opening the diverter gas channel 11 and the diverter liquid channel 12.

[0056] More preferably, Figure 10 As shown, the mixed flow channel 13 includes a liquid section 131, a gas section 132, and a mixing section 133. The liquid section 131 and the gas section 132 are arranged vertically, and the heads of the liquid section 131 and the gas section 132 are adapted to communicate with the switching channel 171. The mixing section 133 is arranged horizontally, and the tails of the liquid section 131 and the gas section 132 are adapted to communicate with the mixing section 133. The middle of the mixing section 133 is also connected to an outflow section 1331, and the mixed fluid is adapted to flow out of the bottle valve through the outflow section 1331. Controlling the mixing section 133 to be arranged horizontally and controlling the tails of the liquid section 131 and the gas section 132 to be connected to the mixing section 133 can make it easier for the fluid to enter the mixed flow channel 13 downward, and prevent it from flowing back into the switching channel 171, thereby keeping the main gas channel 211 and the main liquid channel 221 clean.

[0057] More preferably, Figure 1 As shown, the gas cylinder valve includes an outer shell 3, which is suitable for being mounted on the outside of the main valve body 2 and the diverter assembly 1. The main valve body 2 and the diverter assembly 1 are both detachably connected to the outer shell 3 through threads; a sealing ring 4 is also provided between the main valve body 2 and the outer shell 3, and the sealing ring 4 is suitable for controlling the sealing between the outer shell 3 and the main valve body 2.

[0058] Since the internal structure of the diverter assembly 1 is relatively complex, the diverter assembly is formed by the first combination part 16, the second combination part 17 and the third combination part 18. In order to increase the sealing performance, the outer shell 3 and the threaded connection of the outer shell 3 greatly increase the sealing performance between the outer shell 3 and the diverter assembly 1 and the main valve body 2, making the use of the bottle valve more stable and preventing gas leakage.

[0059] More preferably, Figure 1 As shown, a fusible alloy plug 5 is also provided within the main liquid passage 221. When the temperature is too high, the fusible alloy plug 5 is adapted to melt and relieve the pressure in the gas cylinder. Because liquids have a higher energy density and are more dangerous, the provision of the fusible alloy plug 5 within the main liquid passage 221 maximizes the safety of the cylinder valve.

[0060] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid two-phase multi-purpose gas cylinder valve, comprising a main valve body, the main valve body comprising a gas phase valve and a liquid phase valve, characterized in that: The main valve body is provided with a main gas channel and a main liquid channel which are independent of each other, the gas phase valve is suitable for controlling the gas phase fluid to flow out of the bottle valve through the main gas channel, and the liquid phase valve is suitable for controlling the liquid phase fluid to flow out of the bottle valve through the main liquid channel, a diversion assembly is detachably provided under the main valve body, the diversion assembly is provided with a diversion gas channel and a diversion liquid channel which are independent of each other and can be closed, and a mixing channel which is used to connect the diversion gas channel and the diversion liquid channel and can be closed in one direction, the diversion gas channel is suitable for connecting the main gas channel, the diversion liquid channel is suitable for connecting the main liquid channel, the diversion assembly also includes a mixing valve, the mixing valve is suitable for controlling the mixed fluid of liquid and gas to flow out of the bottle valve through the mixing channel, a connecting channel is also provided in the diversion assembly, the connecting channel has two groups and one end of the connecting channel is suitable for respectively connecting the diversion gas channel and the diversion liquid channel, and the other end of the connecting channel is respectively connected to the gas phase fluid in the gas cylinder or the liquid phase fluid in the gas cylinder; The diverter assembly includes a first assembly part, a second assembly part and a third assembly part connected in sequence from top to bottom, the first assembly part is respectively provided with the diverter gas channel and the diverter liquid channel which are independent and closable along the vertical direction, the second assembly part is respectively provided with switching channels which are independent of each other along the vertical direction, the third assembly part is provided with the mixed flow channel, the upper end of the switching channel is suitable for connecting with the diverter gas channel or the diverter liquid channel, the lower end of the switching channel is suitable for connecting with the mixed flow channel, the switching channel is provided with a switching assembly, the switching assembly is suitable for controlling the upward or downward movement of the gas or the liquid, the mixed flow valve is provided at the end of the mixed flow channel, and controls the mixed fluid to flow out of the bottle valve through the mixed flow channel; The switching assembly includes a through-tube and a switching cap, the through-tubes having two groups, which are respectively arranged in the two groups of switching channels along the vertical direction; the bottom of the third combination part is vertically provided with two groups of through-tube connecting ports, the through-tube connecting ports are suitable for connecting with the mixed flow channel, the through-tubes are suitable for being respectively installed in the through-tube connecting ports, and the inner wall of the through-tube is suitable for defining the connecting channel; the switching cap is slidably connected to the through-tube in the vertical direction, and a first connecting port is vertically provided in the switching cap, the first connecting port is suitable for connecting with the connecting channel and the diverter gas channel or the diverter liquid channel, and the inner wall of the lower part of the switching channel expands radially outward to form a limit through hole, the limiting through hole forms a step structure with the inner wall of the switching channel and the inner wall of the mixed flow channel respectively, and the inner diameter of the limiting through hole is larger than the inner diameter of the switching channel and the inner diameter of the mixed flow channel, the switching cap is provided with a protrusion protruding radially outward on the upper edge, and a plurality of second connecting ports are provided through the upper edge of the protrusion in the upper and lower directions, the protrusion is suitable for respectively contacting the upper and lower end faces of the step structure and limiting the maximum distance of the movement of the switching cap, and at the same time closing the second connecting port; when the gas phase valve, the liquid phase valve and the mixed flow valve are all in the closed state, the switching cap is in the middle of the limiting through hole, and the second connecting port is in the open state.

2. A gas-liquid two-phase multi-purpose gas cylinder valve according to claim 1, characterized in that: The inner wall of the lower part of the first communicating port expands radially outward to form an expansion portion, and the expansion portion and the first communicating port form a step structure. The inner wall of the expansion portion protrudes radially inward to provide a limiting protrusion, and the lower end surface of the limiting protrusion is suitable for contacting the upper end surface of the through pipe. The upper end surface of the limiting protrusion and the inner wall of the expansion portion define a driving cavity, and the gaseous fluid or the liquid fluid is suitable for impacting the upper inner wall of the driving cavity and driving the switching cap to move upward.

3. A gas-liquid two-phase multi-purpose gas cylinder valve according to claim 1, characterized in that: The through pipe is also sleeved with a one-way diaphragm, which is suitable for controlling the fluid from the switching channel to enter the mixed flow channel and preventing the fluid from entering the switching channel from the mixed flow channel.

4. A gas-liquid two-phase multi-purpose gas cylinder valve according to claim 1, characterized in that: The bottom of the through pipe is provided with a thread, and the gas cylinder is provided with a connecting pipe. The connecting pipe has two groups and is connected to the gas phase fluid and the liquid phase fluid respectively. The connecting pipe is detachably connected to the through pipe through a thread.

5. The multi-purpose gas-liquid two-phase cylinder valve according to claim 1, characterized in that: The diversion gas channel and the diversion liquid channel both include conical channels that are larger at the top and smaller at the bottom. A one-way ball is arranged in the conical channel. The outer wall of the one-way ball is suitable for cooperating with the inner wall of the conical channel to form a closed structure. The upper part of the one-way ball is connected to a spring, and the spring is suitable for controlling the one-way ball to press the inner wall of the conical channel.

6. A gas-liquid two-phase multi-purpose gas cylinder valve according to claim 1, characterized in that: The mixed flow channel includes a liquid section, a gas section and a mixing section. The liquid section and the gas section are arranged vertically, and the heads of the liquid section and the gas section are suitable for connecting to the switching channel. The mixing section is arranged horizontally, and the tails of the liquid section and the gas section are suitable for connecting to the mixing section. The middle part of the mixing section is also connected to an outflow section, and the mixed fluid is suitable for flowing out of the bottle valve through the outflow section.

7. The multi-purpose gas-liquid two-phase cylinder valve according to claim 1, characterized in that: The gas cylinder valve includes an outer shell, which is suitable for being mounted on the outside of the main valve body and the diverter assembly. The main valve body and the diverter assembly are both detachably connected to the outer shell through threads; a sealing ring is also provided between the main valve body and the outer shell, and the sealing ring is suitable for controlling the sealing between the outer shell and the main valve body.

8. The multi-purpose gas-liquid two-phase cylinder valve according to claim 1, characterized in that: A fusible alloy plug is also provided in the main liquid channel. When the temperature is too high, the fusible alloy plug is adapted to melt and relieve the pressure of the gas cylinder.

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