A two-phase flow mixing on / off valve

Abstract

This utility model relates to the technical field of decontamination devices, and provides a two-phase flow mixing on-off valve. The two-phase flow mixing on-off valve includes: a valve body, which defines a mixing medium ejection channel, a first fluid input channel, and a second fluid input channel; a check valve, disposed in the first fluid input channel, for unidirectional interception of the first fluid in the first fluid input channel; the medium output direction of the first fluid input channel forms an angle with the extension direction of the mixing medium ejection channel. This utility model can achieve precise control of the output of the first fluid, and reduce the amount of the first fluid used while fully mixing the first and second fluids, effectively improving the decontamination effect.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive decontamination devices, and in particular to a two-phase flow mixing on / off valve. Background Technology

[0002] Hybrid on / off valves are used in the automotive industry for cleaning devices in air conditioning systems, braking systems, and autonomous driving assistance systems. Through modular design, they achieve multi-functional integrated control for cleaning, thereby improving system efficiency and driving safety. For cleaning monitoring components such as cameras and radar in automobiles, simple gas or liquid cleaning is commonly used, with occasional gas-liquid mixtures.

[0003] Gas-liquid mixing decontamination methods typically require two pipelines: a gas pipeline and a liquid pipeline. Each pipeline is equipped with corresponding control devices. Especially when decontaminating certain parts in automobiles, if a decontamination medium formed by gas-liquid two-phase mixing is used, special control components need to be designed for the mixed decontamination medium. This results in a complex structure for the decontamination device, and cumbersome connection and control methods. It is not conducive to the rapid disassembly and assembly of the gas-liquid pipeline of the decontamination device and the efficient control of the decontamination medium spray. In addition, the two-phase fluid mixing effect of the decontamination device is poor, resulting in a large amount of decontamination liquid medium used and poor decontamination effect.

[0004] Therefore, there is an urgent need for a two-phase flow mixing on / off valve to achieve mixing of two-phase decontamination media and reduce the amount of decontamination liquid media used. Utility Model Content

[0005] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a two-phase flow mixing on / off valve for achieving the mixing of two-phase decontamination media and reducing the amount of decontamination liquid phase media used.

[0006] To achieve the above-mentioned utility model objective, this utility model provides a two-phase flow mixing on / off valve, the two-phase flow mixing on / off valve comprising:

[0007] A valve body, wherein a mixing medium ejection channel, a first fluid input channel and a second fluid input channel are defined on the valve body; the first fluid input channel is connected to the mixing medium ejection channel and is used to deliver the first fluid to the mixing medium ejection channel;

[0008] The second fluid input channel is connected to the mixing medium ejection channel and is used to deliver the second fluid into the mixing medium ejection channel;

[0009] A check valve is disposed within the first fluid inlet channel, the check valve being used to unidirectionally intercept the fluid within the first fluid inlet channel; and

[0010] The medium output direction of the first fluid input channel forms an angle with the extension direction of the mixed medium ejection channel.

[0011] According to one technical solution of this utility model, the valve body has a media mixing channel defined inside for the flow of the mixed medium, and the media mixing channel is connected to the mixed medium ejection channel for ejecting the mixed medium.

[0012] According to one technical solution of this utility model, the medium output direction of the mixed medium ejection channel forms an angle with the extension direction of the medium mixing channel.

[0013] According to one technical solution of this utility model, the valve body further defines a second fluid storage chamber. The medium mixing channel is connected to the second fluid storage chamber through an on / off control hole. The end of the second fluid storage chamber away from the on / off control hole has an opening for installing a solenoid valve. The on / off control hole cooperates with the valve core of the solenoid valve to control whether the second fluid can enter the medium mixing channel. The second fluid input channel is connected to the medium mixing channel through the second fluid storage chamber.

[0014] According to one technical solution of this utility model, the on / off control hole is provided with a sealing protrusion for the valve core of the solenoid valve to abut against the end face of the sealing protrusion.

[0015] According to one technical solution of this utility model, the two-phase flow mixing on / off valve further includes:

[0016] A detachable fixing structure is provided on the opening of the second fluid storage cavity and the second fluid input channel, respectively.

[0017] According to one technical solution of this utility model, the interior of the first fluid input channel has an installation cavity, the check valve is disposed in the installation cavity and is detachably connected to the valve body.

[0018] According to one technical solution of this utility model, the check valve includes:

[0019] The check valve body has a check valve inlet channel;

[0020] A sealing assembly, disposed within the mounting cavity and adapted to seal and open the inlet channel of the check valve.

[0021] According to one technical solution of this utility model, the sealing component includes:

[0022] A protrusion is provided at one end of the check valve body, and the outer side of the protrusion has a check valve outlet structure, which is connected to the check valve inlet channel.

[0023] An elastic sleeve is fitted onto the protrusion and fits tightly against the check valve outlet structure to block the check valve outlet structure in a first state, and to allow the first fluid to flow out from the gap between the elastic sleeve and the check valve outlet structure in a second state.

[0024] According to one technical solution of this utility model, the liquid outlet structure of the check valve is at least one through hole arranged circumferentially along the protrusion.

[0025] According to one technical solution of this utility model, the check valve outlet structure further includes a groove arranged circumferentially along the protrusion, and the through hole is disposed in the groove.

[0026] According to one technical solution of this utility model, the mounting cavity includes: a protruding portion mounting cavity and a check valve body mounting cavity that are connected.

[0027] The protrusion and the elastic sleeve are installed in the cavity of the protrusion, and the cavity of the protrusion is in communication with the first fluid input channel;

[0028] The check valve body is disposed within the check valve body mounting cavity, and the inner diameter of the check valve body mounting cavity gradually decreases along the installation direction of the check valve body.

[0029] According to one technical solution of this utility model, the sealing component includes:

[0030] A sealing element is disposed within the mounting cavity;

[0031] An elastic element is disposed on the side of the sealing element opposite to the liquid inlet channel of the check valve, for pressing the sealing element against the liquid outlet of the liquid inlet channel of the check valve.

[0032] According to one technical solution of this utility model, the first fluid input channel is provided with a first fluid output port communicating with the medium mixing channel, and the mixed medium ejection channel is provided with a mixed medium ejection port communicating with the medium mixing channel. The first fluid output port is located at one end of the medium mixing channel away from the mixed medium ejection port.

[0033] Compared with the prior art, this utility model has the following advantages:

[0034] This invention proposes a two-phase fluid mixing on-off valve. By using a check valve installed within the first fluid input channel, the first fluid in the first fluid input channel is unidirectionally intercepted, temporarily stored in the media ejection channel. A second fluid source is controlled to supply the second fluid to the media ejection channel, controlling the mixing and ejection of the second and first fluids. This invention integrates the input pipelines of the second and first fluids onto the same device and achieves mixing control through the check valve, significantly reducing the structural complexity of automotive cleaning devices, improving the integration and assembly efficiency of the pipelines in automotive cleaning devices, and facilitating the matching of different cleaning media ejection modes according to different usage scenarios of automotive cleaning devices, thus exhibiting good adaptability. Furthermore, by using an angle between the media output direction of the first fluid input channel and the extension direction of the media ejection channel, this invention effectively reduces the impact of the media in the media ejection channel on the check valve, protecting the check valve and extending the service life of the two-phase flow mixing on-off valve. Attached Figure Description

[0035] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0036] Figure 1 A schematic view of a two-phase flow mixing on / off valve provided in an embodiment of the present invention;

[0037] Figure 2 The schematic diagram shows a cross-sectional view of a two-phase flow mixing on / off valve provided in one embodiment of the present invention.

[0038] Figure 3 Schematic representation Figure 2 Enlarged view of point A in the middle;

[0039] Figure 4 This schematic diagram illustrates the structure of a check valve according to one embodiment of the present invention.

[0040] Figure 5 This schematic diagram illustrates the closed state of the solenoid valve during use of a two-phase flow mixing on / off valve according to one embodiment of the present invention; and

[0041] Figure 6 This diagram illustrates the open state of the solenoid valve when the two-phase flow mixing on / off valve provided in one embodiment of the present invention is in use.

[0042] Figure 7 The schematic diagram shows a cross-sectional structure of a two-phase flow mixing on / off valve provided according to another embodiment of the present invention.

[0043] The correspondence between component names and reference numerals in the accompanying drawings is as follows:

[0044] 1. Valve body; 2. Check valve; 3. Solenoid valve;

[0045] 11. Medium mixing channel; 12. Second fluid storage chamber; 13. On / off control hole; 14. Sealing protrusion; 15. Mixed medium ejection channel; 16. First fluid input channel; 17. Second fluid input channel; 18. Boss;

[0046] 21. Check valve body; 22. Protrusion; 23. Elastic sleeve;

[0047] 211. Check valve inlet channel; 212. Limiting ridge; 213. Snap fastener; 214. Sealing element; 215. Elastic element;

[0048] 221. Through hole; 223. Groove;

[0049] 31. Valve core. Detailed Implementation

[0050] The description of the embodiments in this specification should be taken in conjunction with the accompanying drawings, which should form part of the complete specification. In the drawings, the shape or thickness of the embodiments may be exaggerated and may be indicated in a simplified or convenient manner. Furthermore, parts of the various structures in the drawings will be described separately; it is worth noting that elements not shown in the figures or not described in words are in a form known to those skilled in the art.

[0051] The description of the embodiments herein, including any references to direction and orientation, is for ease of description only and should not be construed as limiting the scope of protection of this utility model. The following description of preferred embodiments involves combinations of features, which may exist independently or in combination; this utility model is not particularly limited to the preferred embodiments. The scope of this utility model is defined by the claims.

[0052] like Figures 1 to 7As shown, this utility model provides a two-phase flow mixing on / off valve for realizing two-phase mixing and on / off control of an automotive decontamination device, including a valve body 1 and a check valve 2. The valve body 1 defines a mixing medium ejection channel 15, a first fluid input channel 16, and a second fluid input channel 17. The mixing medium ejection channel 15 is used to eject the mixing medium. The first fluid input channel 16 is connected to the mixing medium ejection channel 15 and is used to supply a first fluid to the mixing medium ejection channel 15. The second fluid input channel 17 is connected to the mixing medium ejection channel 15 and is used to supply a second fluid to the mixing medium ejection channel 15. Both the first and second fluids can be gaseous or liquid decontamination media. When the first fluid is a liquid decontamination media, the check valve 2 is installed in the first fluid inlet channel 16 to unidirectionally intercept the fluid in the first fluid inlet channel 16. The first fluid can be temporarily stored in the mixed medium outlet channel 15. By controlling the supply of the second fluid source to the mixed medium outlet channel 15, the mixing and ejection of the second and first fluids are controlled. The medium output direction of the first fluid inlet channel 16 forms an angle with the extension direction of the mixed medium outlet channel 15. Preferably, the angle between the medium output direction of the first fluid inlet channel 16 and the medium flow direction of the mixed medium outlet channel 15 is 90°-135°. This arrangement can effectively reduce the impact on the check valve 5 when the high-pressure second fluid enters the mixed medium outlet channel 15, thus protecting the check valve 5 and extending the service life of the two-phase flow mixing on / off valve.

[0053] In some preferred embodiments of this utility model, the valve body 1 has a media mixing channel 11 inside, which is used to allow the mixed medium to flow. The first fluid input channel 16 and the second fluid input channel 17 are connected to the mixed medium ejection channel 15 through the media mixing channel 11 to improve the mixing effect of the first fluid and the second fluid.

[0054] In some preferred embodiments of this utility model, the medium output direction of the mixed medium ejection channel 15 forms an angle with the extension direction of the medium mixing channel 11. Preferably, the angle θ between the medium output direction of the mixed medium ejection channel 15 and the extension direction of the medium mixing channel 11 satisfies 90°≤θ<180°. In this way, the medium output direction of the mixed medium ejection channel 15 and the medium flow direction of the medium mixing channel 11 are neither parallel nor collinear, which can effectively extend the flow path when the two-phase medium is mixed, improve the dispersion degree of the liquid phase in the gas phase, and thus improve the full mixing effect of the two-phase fluid.

[0055] In some preferred embodiments of this utility model, the first fluid input channel 16 is provided with a first fluid output port that communicates with the medium mixing channel 11, and the mixing medium ejection channel 15 is provided with a mixing medium ejection port that communicates with the medium mixing channel 11. The first fluid output port is located at one end of the medium mixing channel 11 away from the mixing medium ejection port, which is used to improve the mixing efficiency of the first fluid and the second fluid output from the first fluid input channel 16.

[0056] In some preferred embodiments of this invention, the valve body 1 further defines a second fluid storage chamber 12. The medium mixing channel 11 is connected to the second fluid storage chamber 12 via an on / off control hole 13. The end of the second fluid storage chamber 12 away from the on / off control hole 13 has an opening for mounting a solenoid valve 3. The on / off control hole 13 is used to cooperate with the valve core 31 of the solenoid valve 3 to control whether the second fluid enters the medium mixing channel 11. The second fluid input channel 17 is connected to the second fluid storage chamber 12. By cooperating with the valve core 31 of the solenoid valve 3 and the on / off control hole 13 in the second fluid storage chamber 12, the on / off control of the mixed medium ejection can be realized.

[0057] In some preferred embodiments of this utility model, the inner diameter of the mixing medium ejection channel 15 is smaller than the inner diameter of the medium mixing channel 11, which is used to increase the pressure of the mixed medium ejection; the inner diameter of the medium mixing channel 11 is smaller than the inner diameter of the second fluid storage cavity 12, which is used to increase the pressure of the second fluid entering the medium mixing channel 11.

[0058] In some preferred embodiments of this utility model, the on / off control hole 13 is provided with a sealing protrusion 14, which is used to make the valve core 31 of the solenoid valve 3 abut against the end face of the sealing protrusion 14, thereby improving the sealing performance of the solenoid valve.

[0059] In some preferred embodiments of this utility model, the opening of the second fluid storage chamber 12 and the second fluid input channel 17 are provided with a detachable fixing structure. The detachable fixing structure can be a threaded structure or a snap-fit ​​structure, which is used to realize the quick assembly and disassembly between the second fluid storage chamber 12 and the solenoid valve 3, and the quick assembly and disassembly between the valve body 1 and the second fluid source. Preferably, the detachable fixing structure is a threaded structure, which can improve the ease of assembly and disassembly while improving the airtightness of the connection.

[0060] In some preferred embodiments of this utility model, the first fluid input channel 16 has an installation cavity, and the check valve 2 is disposed in the installation cavity and is detachably connected to the valve body 1, which facilitates the maintenance and replacement of the check valve 2, thereby extending the service life of the two-phase flow mixing on / off valve.

[0061] In some preferred embodiments of this utility model, the check valve 2 includes a check valve body 21 and a sealing assembly. The check valve body 21 has a check valve inlet channel 211 inside. The sealing assembly is disposed in the mounting cavity and is adapted to block and open the check valve inlet channel 211.

[0062] In some preferred embodiments of this invention, the sealing assembly includes a protrusion 22 and an elastic sleeve 23. The protrusion 22 is disposed at one end of the check valve body 21. The outer surface of the protrusion 22 has a check valve outlet structure, which communicates with the check valve inlet channel 211. The elastic sleeve 23 is fitted onto the protrusion 22 and fits tightly against the check valve outlet structure, used to seal the check valve outlet structure in a first state and to allow the first fluid to flow out from the gap between the elastic sleeve 23 and the check valve outlet structure in a second state. The check valve body 21 and the protrusion 22 are integrally manufactured. Preferably, the elastic sleeve 53 is made of silicone or rubber material.

[0063] In some preferred embodiments of this utility model, the protrusion 22 is columnar, and the liquid outlet structure is disposed on the side or end face of the protrusion 22. The elastic sleeve 23 is sleeved on the protrusion 22 through the opening on the elastic sleeve 23, and is disposed tightly against the side or end face of the protrusion 22 in the first state. In the second state, the elastic sleeve 23 expands in a direction away from the side or end face of the protrusion 22, so that a gap is formed between the inner wall of the elastic sleeve 23 and the side or end face of the protrusion 22.

[0064] In some preferred embodiments of this utility model, the check valve outlet structure is at least one through hole 221 arranged circumferentially along the protrusion 22. Preferably, when there are multiple through holes 221, there is a reinforcing structure 222 between adjacent through holes 221. The reinforcing structure 222 can be a thickened structure of the side wall of the protrusion arranged between two adjacent through holes 221 to improve the pressure bearing capacity of the protrusion 22 at the outlet structure and meet the pressure requirements of the first fluid.

[0065] In some preferred embodiments of this utility model, the liquid outlet structure further includes a groove 223 arranged circumferentially along the protrusion 22, and a through hole 222 is disposed within the groove 223. The groove 223 creates a gap between the elastic sleeve 23 and the protrusion 22, preventing an increase in pressure when liquid flows out of the check valve outlet structure due to a negative pressure structure formed by the first fluid. Simultaneously, the groove 223 also acts as a drainage channel, preventing blockage of the through hole 221 on the check valve outlet structure, thereby improving the liquid outlet efficiency of the check valve outlet structure and the service life of the check valve 2.

[0066] In some preferred embodiments of this invention, the mounting cavity within the first fluid input channel 16 includes a communicating protrusion cavity and a check valve body mounting cavity. The protrusion 22 and the elastic sleeve 23 are mounted within the protrusion cavity, and the check valve body 21 is mounted within the check valve body mounting cavity. The check valve 2 and valve body 1 are designed as separate units, facilitating individual production and assembly, as well as replacement and disassembly of the check valve 2, thereby extending the service life of the two-phase mixing on / off valve.

[0067] In some preferred embodiments of this utility model, the inner diameter of the check valve body mounting cavity gradually decreases along the installation direction of the check valve body 21. The shape of the check valve body 21 is adapted to the shape of the check valve body mounting cavity. The check valve body 21 is frustum-shaped or truncated pyramidal, which can reduce the installation resistance of the check valve 2 and improve the installation efficiency. Optionally, the shape of the check valve body 21 is frustum-shaped or truncated pyramidal. In some preferred embodiments of this utility model, the shape of the check valve body 21 is frustum-shaped. The side of the check valve body 21 has a limiting ridge 212 arranged along the installation direction of the check valve 2. The check valve body mounting cavity is provided with a limiting groove (not shown in the figure) adapted to the limiting ridge 212. Through the cooperation of the limiting ridge 212 and the limiting groove, the rotation of the check valve body 21 in the check valve body mounting cavity and the deformation caused by friction between the elastic sleeve 23 and the inner wall of the check valve body mounting cavity are prevented, which would affect the sealing and check-back effect of the elastic sleeve 23.

[0068] In some preferred embodiments of this utility model, the detachable fixing structure is one of the following: a matching snap and a snap groove, a matching external thread and an internal thread, or a matching screw and a threaded hole. Preferably, the check valve body mounting cavity has a snap groove (not shown in the figure), and the outer circumferential surface of the check valve body 21 is provided with a snap 213 adapted to the snap groove. The check valve body mounting cavity and the check valve body 21 are fixedly connected by the snap 213, making disassembly and assembly convenient. In some preferred embodiments of this utility model, the check valve body mounting cavity has an internal thread, and the outer circumferential surface of the check valve body 21 is provided with an external thread adapted to the internal thread. The check valve body 21 is fixedly connected to the check valve body mounting cavity through the threaded structure, which is used to improve the sealing performance between the check valve and the valve body 1. In some preferred embodiments of this utility model, the check valve body mounting cavity and the check valve body 21 are respectively provided with a threaded hole and a through hole. The screw passes through the through hole and is fixedly connected to the threaded hole, which has the characteristics of convenient disassembly and assembly.

[0069] In some preferred embodiments of the present invention, the sealing assembly includes a sealing member 214 and an elastic member 215. The sealing member 214 is disposed in the mounting cavity, and the elastic member 215 is disposed on the side of the sealing member 214 facing away from the inlet channel 211 of the check valve, for pressing the sealing member 214 against the outlet of the inlet channel 211 of the check valve. When the pressure of the first fluid in the check valve inlet channel 211 is greater than the force exerted by the elastic element 215 on the sealing element 214, the first fluid in the check valve inlet channel 211 pushes the sealing element 214 away from the outlet of the check valve inlet channel 211, compressing the elastic element 215 and creating a gap between the outlet and the sealing element 214 for the first fluid to flow through. Conversely, when the pressure of the first fluid in the check valve inlet channel 211 is less than the force exerted by the elastic element 215 on the sealing element 214, under the squeezing action of the elastic element 215, the elastic element 215 pushes the sealing element 214 to move to press against the outlet of the check valve inlet channel 211, thus sealing the outlet. Preferably, the sealing element 214 can be a sphere or a hemisphere, and the elastic element 215 can be a spring or other components with elasticity or spring function. The sealing assembly adopts the form of a sealing element and an elastic element, which has a simple structure, is easy to assemble, and has a good cost performance.

[0070] In some preferred embodiments of this utility model, such as Figure 7 As shown, the mounting cavity is provided with an elastic element limiting part, which can be a boss protruding along the side wall of the mounting cavity. The two ends of the elastic element 215 abut against the boss and the side wall of the sealing element 214, respectively.

[0071] The two-phase flow mixing on / off valve provided by this utility model can realize multiple output modes, including liquid fluid ejection alone, gas fluid ejection alone, and two-phase fluid mixed medium ejection.

[0072] Liquid phase fluid ejection mode: such as Figure 5 As shown, the solenoid valve 3 is closed, and the valve core 31 of the solenoid valve 3 abuts against the on / off control hole 13. The medium mixing channel 11 is not connected to the second fluid storage chamber 12. The first fluid source continuously outputs a large amount of first fluid through the medium mixing channel 11 via the check valve 2. The first fluid is ejected through the mixing medium ejection channel 15.

[0073] Gas-phase fluid ejection mode: such as Figure 6 As shown, the solenoid valve 3 is open, the valve core 31 of the solenoid valve 3 leaves the on / off control hole 13, the medium mixing channel 11 is connected to the second fluid storage chamber 12, the first fluid source does not supply the first fluid, the second fluid source continuously outputs the second fluid through the second fluid input channel 17, and the second fluid is ejected through the mixing medium ejection channel 15.

[0074] Mixed medium ejection mode: First, such as Figure 5As shown, solenoid valve 3 is closed, and the valve core 31 of solenoid valve 3 abuts against the on / off control hole 13. The medium mixing channel 11 is not connected to the second fluid storage chamber 12. The first fluid source outputs a small amount of first fluid to the medium mixing channel 11 through check valve 2. At the same time, the second fluid source outputs second fluid through the second fluid input channel 17, and the second fluid is temporarily stored in the second fluid storage chamber 12.

[0075] Then, the solenoid valve 3 motor actuates, driving the valve core 31 away from the on / off control hole 13, as... Figure 6 As shown, solenoid valve 3 opens, connecting the medium mixing channel 11 to the second fluid storage chamber 12. The second fluid enters the medium mixing channel 11 from the second fluid storage chamber 12. Under the high-pressure impact of the second fluid, the first fluid breaks into small droplets and mixes thoroughly with the second fluid in the medium mixing channel 11 before being ejected from the mixed medium ejection channel 15. The mixed medium ejection channel 15 can be connected to a decontamination device through a pipeline to achieve the purpose of decontaminating the components to be decontaminated. By controlling the single output of the first fluid by check valve 2, the size of the small droplets formed by the mixing of the first and second fluids can be controlled.

[0076] The output of the first fluid can be precisely controlled by the check valve 2 in the first fluid input channel 16.

[0077] When the sealing assembly consists of a protrusion 22 and an elastic sleeve 23, its specific working process is as follows: The first fluid enters the check valve inlet channel 211 through the check valve inlet port 212. Under the high pressure impact of the first fluid, the first fluid flows out along the check valve outlet structure, opening the elastic sleeve 23 to make it in the second state. In the second state, a flow passage is formed between the elastic sleeve 23 and the check valve outlet structure, allowing the first fluid to flow out through the flow passage and enter the medium mixing channel 11. The first fluid source stops supplying the first fluid, the pressure in the check valve inlet channel 211 decreases, and the elastic sleeve 23 returns to the first state, tightly adhering to the check valve outlet structure to achieve a seal on the check valve outlet structure, preventing the first fluid in the medium mixing channel 11 from flowing back to the check valve inlet channel.

[0078] When the sealing assembly consists of a sealing element 214 and an elastic element 215, its specific working process is as follows: The first fluid enters the check valve inlet channel 211 through the check valve inlet port 212. Under the high-pressure impact of the first fluid, the sealing element 214 moves away from the outlet of the check valve inlet channel 211, causing the elastic element 215 to be in a compressed state. The sealing element 214 disengages from the outlet of the check valve inlet channel 211, opening the check valve inlet channel 211, allowing the first fluid to flow out and enter the medium mixing channel 11. When the first fluid source stops supplying the first fluid, the elastic element 215 returns to its original state, pressing the sealing element 214 against the outlet of the check valve inlet channel 211, sealing the check valve inlet channel 211, so that the first fluid in the medium mixing channel 11 cannot flow back to the check valve inlet channel.

[0079] Finally, it should be noted that the above description represents the preferred embodiment of this utility model. It should be pointed out that although the preferred embodiment of this utility model has been described, those skilled in the art, once they understand the basic inventive concept of this utility model, can make several improvements and modifications without departing from the principles described herein. These improvements and modifications should also be considered within the protection scope of this utility model. Therefore, the appended claims are intended to be interpreted as including the preferred embodiment as well as all changes and modifications falling within the scope of the embodiments of this utility model.

Claims

1. A two-phase flow mixing on / off valve, characterized in that, The two-phase flow mixing on / off valve includes: A valve body, wherein a mixing medium ejection channel, a first fluid input channel and a second fluid input channel are defined on the valve body; the first fluid input channel is connected to the mixing medium ejection channel and is used to deliver the first fluid to the mixing medium ejection channel; The second fluid input channel is connected to the mixing medium ejection channel and is used to deliver the second fluid into the mixing medium ejection channel; A check valve is disposed within the first fluid inlet channel, the check valve being used to unidirectionally intercept the fluid within the first fluid inlet channel; and The medium output direction of the first fluid input channel forms an angle with the extension direction of the mixed medium ejection channel.

2. The two-phase flow mixing on / off valve of claim 1, wherein, The valve body has an internally defined medium mixing channel for the flow of the mixed medium, which is connected to the mixed medium ejection channel for ejecting the mixed medium.

3. The two-phase flow on-off valve according to claim 2, wherein The medium output direction of the mixed medium ejection channel forms an angle with the extension direction of the medium mixing channel.

4. The two-phase flow on-off valve according to claim 2, wherein The valve body further defines a second fluid storage chamber. The medium mixing channel is connected to the second fluid storage chamber through an on / off control hole. The end of the second fluid storage chamber away from the on / off control hole has an opening for installing a solenoid valve. The on / off control hole cooperates with the valve core of the solenoid valve to control whether the second fluid can enter the medium mixing channel. The second fluid input channel is connected to the medium mixing channel through the second fluid storage chamber.

5. The two-phase flow on-off valve according to claim 4, wherein The on / off control hole is provided with a sealing protrusion, which is used to make the valve core of the solenoid valve abut against the end face of the sealing protrusion.

6. The two-phase flow on-off valve according to claim 4, wherein The two-phase flow mixing on / off valve also includes: A detachable fixing structure is provided on the opening of the second fluid storage cavity and the second fluid input channel, respectively.

7. The two-phase flow on-off valve according to claim 1, wherein The first fluid input channel has an internal mounting cavity, and the check valve is disposed in the mounting cavity and detachably connected to the valve body.

8. The two-phase flow on-off valve according to claim 7, wherein The check valve includes: The check valve body has a check valve inlet channel; A sealing assembly, disposed within the mounting cavity and adapted to seal and open the inlet channel of the check valve.

9. The two-phase flow on-off valve according to claim 8, wherein The blocking assembly includes: A protrusion is provided at one end of the check valve body, and the outer side of the protrusion has a check valve outlet structure, which is connected to the check valve inlet channel. An elastic sleeve is fitted onto the protrusion and fits tightly against the check valve outlet structure to block the check valve outlet structure in a first state, and to allow the first fluid to flow out from the gap between the elastic sleeve and the check valve outlet structure in a second state.

10. The two-phase flow on-off valve according to claim 8, wherein The blocking assembly includes: A sealing element is disposed within the mounting cavity; An elastic element is disposed on the side of the sealing element opposite to the liquid inlet channel of the check valve, for pressing the sealing element against the liquid outlet of the liquid inlet channel of the check valve.

11. The two-phase flow on-off valve according to claim 9, wherein The check valve outlet structure consists of at least one through hole arranged circumferentially along the protrusion.

12. The two-phase flow on-off valve according to claim 11, wherein The check valve outlet structure also includes a groove arranged circumferentially along the protrusion, and the through hole is disposed in the groove.

13. The two-phase flow on-off valve according to claim 9, wherein The mounting cavity includes: a connected protruding portion mounting cavity and a check valve body mounting cavity; The protrusion and the elastic sleeve are installed in the cavity of the protrusion, and the cavity of the protrusion is in communication with the first fluid input channel; The check valve body is disposed within the check valve body mounting cavity, and the inner diameter of the check valve body mounting cavity gradually decreases along the installation direction of the check valve body.

14. The two-phase flow on-off valve according to claim 2, wherein The first fluid input channel is provided with a first fluid output port that communicates with the medium mixing channel, and the mixed medium ejection channel is provided with a mixed medium ejection port that communicates with the medium mixing channel. The first fluid output port is located at one end of the medium mixing channel away from the mixed medium ejection port.

Images