Three-way one-way valve

Abstract

The utility model discloses a three-way one-way valve which comprises a three-way valve body, a first connector and a one-way valve part, the three-way valve body is connected with the first connector in a matched mode, a containing cavity is defined by the three-way valve body and the first connector, and the one-way valve part is arranged in the containing cavity to block or conduct liquid. The one-way valve piece comprises a sealing piece and a protruding block, and the sealing piece is provided with a liquid passing hole. The first connector is internally provided with a first channel communicating with the containing cavity, the protruding block is arranged on the inner wall of the first channel, and a liquid flow gap is formed between the protruding block and the inner wall of the first channel. The sealing piece abuts against the protruding block, and the position of the protruding block corresponds to the liquid passing hole. In the technology, through the arrangement of the one-way valve piece and the matching effect of the sealing piece and the protruding block, the situation that liquid in the three-way one-way valve flows back to the patient end due to pressure change in a pipeline caused by screwing and rotating the handle and the valve element in the operation process can be effectively avoided, discomfort of a patient is reduced, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a three-way one-way valve. Background Art

[0002] Three-way valves are generally used in conjunction with other medical devices to perform injections, infusions, blood transfusions, tests or blood draws on patients. Three-way valves are widely used in the medical field. For example, in invasive pressure sensors, by adjusting the flow channel of the three-way valve, the pressure testing device, the liquid return device, the three-way valve, and the patient end are connected to provide continuous dynamic testing for the patient, and the patient's blood pressure and other physiological parameters can be directly obtained. Alternatively, by adjusting the flow channel conduction inside the three-way valve, the blood collection device, the three-way valve, and the patient end are connected to collect the patient's blood, avoiding multiple punctures to the patient and causing damage, thereby alleviating the patient's pain. However, the existing three-way valve does not have an anti-backflow function. During actual use, pressure changes in the pipeline are prone to cause liquid to flow back to the patient end, causing trouble to the patient. Therefore, the three-way valve in the related art has a technical defect of lacking an anti-backflow function. Utility Model Content

[0003] The utility model provides a three-way one-way valve, which aims to solve the technical defect that the three-way valve in the related art does not have the anti-backflow function.

[0004] The utility model discloses a three-way one-way valve, comprising: a three-way valve body, a first joint, and a one-way valve component. The three-way valve body is cooperatively connected to the first joint, and an accommodating cavity is enclosed between the three-way valve body and the first joint. The one-way valve component is arranged in the accommodating cavity to block or conduct liquid; the one-way valve component comprises: a sealing component and a protrusion, and the sealing component is provided with a liquid hole; a first channel connected to the accommodating cavity is provided in the first joint, the protrusion is provided on the inner wall of the first channel, and a liquid flow gap is provided between the protrusion and the inner wall of the first channel; the sealing component abuts against the protrusion, and the position of the protrusion corresponds to the liquid hole.

[0005] In which, the three-way valve body includes a first connecting pipe, a second connecting pipe, and a third connecting pipe that are interconnected. The first connecting pipe and the second connecting pipe are arranged on the same straight line, and the first connecting pipe and the second connecting pipe form a main channel inside. The third connecting pipe is arranged at an angle to the first connecting pipe, and the third connecting pipe forms a branch channel inside; the first connecting pipe is cooperatively connected with the first joint, and the accommodating chamber is arranged between the first connecting pipe and the first joint.

[0006] Specifically, the sealing member includes: a sealing ring and a sealing plate. The sealing plate cover is arranged on one side of the sealing ring. The liquid hole is arranged at the center of the sealing plate. The sealing plate abuts against the protrusion.

[0007] Preferably, a first boss is provided on the surface of the sealing plate facing the protrusion, and a plurality of pads are provided on the surface of the first boss facing the protrusion. The plurality of pads are arranged in a ring shape; a sealing groove is provided in the center recess of the first boss.

[0008] Specifically, a first convex ring is provided on the surface of the convex block facing away from the first joint, and the first convex ring is tightly pressed against the sealing groove.

[0009] Preferably, a first annular abutment plate is circumferentially provided at the end of the first joint close to the first connecting pipe, the first annular abutment plate is perpendicularly arranged to the outer wall of the first joint, and a first annular mounting ring is protruded on the side of the first annular abutment plate away from the first joint.

[0010] Preferably, a second annular abutment plate is circumferentially provided at the end of the first connecting tube close to the first joint, and the second annular abutment plate is arranged perpendicular to the outer wall of the first connecting tube. A first annular abutment ring and a second annular abutment ring are protruding from the side of the second annular abutment plate away from the first connecting tube. The first annular abutment ring is arranged around the outside of the second annular abutment ring, and an abutment groove is formed between the first annular abutment ring and the second annular abutment ring, and the first annular mounting ring is clamped in the abutment groove; the circumferential outer surface of the sealing ring is tightly fitted with the radial inner surface of the second annular abutment ring, and the end of the sealing ring away from the sealing plate abuts against the second annular abutment plate.

[0011] Among them, the three-way valve body also includes: a plug-in hole and a valve core. The plug-in hole runs through the three-way valve body and is respectively connected to the first connecting pipe, the second connecting pipe, and the third connecting pipe. The valve core is plugged into the plug-in hole and can rotate relative to the three-way valve body; a main passage and a bypass passage are provided inside the valve core.

[0012] Preferably, the valve core is interference-fitted into the insertion hole.

[0013] Specifically, the valve core includes a valve core body and a rotating handle that are connected to each other. The valve core body is inserted into the inserting hole, and the rotating handle is extended along the radial direction of the valve core body.

[0014] The utility model discloses a three-way one-way valve, comprising: a three-way valve body, a first connector, and a one-way valve member, wherein the three-way valve body is cooperatively connected to the first connector, and a receiving chamber is enclosed between the three-way valve body and the first connector, and the one-way valve member is arranged in the receiving chamber to block or conduct liquid; the one-way valve member comprises: a sealing member and a protrusion, and the sealing member is provided with a liquid hole; a first channel connected to the receiving chamber is provided in the first connector, the protrusion is provided on the inner wall of the first channel, and a liquid flow gap is provided between the protrusion and the inner wall of the first channel; the sealing member abuts against the protrusion, and the position of the protrusion corresponds to the liquid hole. In this technology, by arranging the one-way valve member between the first connecting pipe and the first connector, the cooperation of the sealing member and the protrusion can effectively prevent the pressure change in the pipeline caused by rotating the handle and the valve core during operation, which can cause the liquid in the three-way one-way valve to flow back to the patient end, effectively reducing the discomfort of the patient, and solving the technical defect that the three-way valve in the related art does not have a backflow prevention function, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without making any innovative efforts.

[0016] Figure 1 This is an overall structural diagram of the three-way one-way valve disclosed in an embodiment of the present utility model;

[0017] Figure 2 A top view of a three-way one-way valve disclosed in an embodiment of the present utility model;

[0018] Figure 3 A cross-sectional view of a three-way one-way valve disclosed in an embodiment of the present utility model;

[0019] Figure 4 The disclosed embodiment of the utility model Figure 3 A magnified view of the structure of part A;

[0020] Reference numerals:

[0021] 1. Three-way valve body; 11. First connecting pipe; 111. Main flow channel; 112. Second annular abutting plate; 113. First annular abutting ring; 114. Second annular abutting ring; 115. Abutting groove; 12. Second connecting pipe; 121. Abutting protrusion; 13. Third connecting pipe; 14. Connecting hole; 2. First connector; 21. First channel; 22. First annular abutting plate; 23. First annular mounting ring; 3. One-way valve member; 31. Sealing member; 311. Sealing ring; 3111, liquid passage hole; 3112, second raised ring; 312, sealing plate; 3121, first boss; 3122, spacer; 3123, blocking groove; 32, raised block; 321, liquid flow gap; 322, first raised ring; 4, rotating sleeve; 41, abutment section; 411, abutment step; 42, sleeve section; 421, spiral pattern; 5, valve core; 51, valve core body; 511, main passage; 512, bypass passage; 52, rotating handle; 521, anti-slip rib; DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It will be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0024] It should also be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0025] It should be further understood that the terms “and” and “or” used in the present specification and the appended claims refer to any and all possible combinations of one or more of the associated listed items, and include these combinations.

[0026] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

[0027] The utility model discloses a three-way one-way valve. Figure 1 As shown, it includes: a three-way valve body 1, a first connector 2, and a one-way valve component 3. The three-way valve body 1 is connected with the first connector 2. The three-way valve body 1 and the first connector 2 form an accommodating cavity. The one-way valve component 3 is arranged in the accommodating cavity to block or conduct liquid, so that the first connector 2 and the three-way valve body 1 can conduct one-way.

[0028] Please refer to Figure 3 The one-way valve component 3 includes: a sealing member 31 and a protrusion 32. The sealing member 31 is provided with a liquid passage hole 3111. The first connector 2 is provided with a first channel 21 connected to the accommodating chamber. The protrusion 32 is provided on the inner wall of the first channel 21, and a liquid flow gap 321 is provided between the protrusion 32 and the inner wall of the first channel 21. In this embodiment, the flow of liquid from the first connector 2 into the three-way valve body 1 is defined as forward flow, and the reverse flow is defined as reverse flow. When the liquid flows forward, the liquid flows from the first connector 2 through the liquid flow gap 321 and the liquid passage hole 3111 in sequence into the three-way valve body 1; the sealing member 31 abuts against the protrusion 32, and the position of the protrusion 32 corresponds to the liquid passage hole 3111. When the liquid flows reversely, the liquid flows from the three-way valve body 1 to the first connector. Under the action of hydraulic pressure, the sealing member 31 moves toward the protrusion 32 until the protrusion 32 blocks the liquid passage hole 3111, thereby preventing the reverse flow of the liquid.

[0029] Please refer to Figure 1-2 The three-way valve body 1 includes a first connecting pipe 11, a second connecting pipe 12, and a third connecting pipe 13 that are interconnected. The first connecting pipe 11 and the second connecting pipe 12 are arranged on the same straight line. A main flow channel 111 is formed inside the first connecting pipe 11 and the second connecting pipe 12. The third connecting pipe 13 is arranged at an angle to the first connecting pipe 11, and a branch flow channel is formed inside the third connecting pipe 13. The first connecting pipe 11 is cooperatively connected to the first joint 2, and the accommodating chamber is arranged between the first connecting pipe 11 and the first joint 2.

[0030] Please refer to Figure 3The sealing member 31 includes: a sealing ring 311 and a sealing plate 312. The sealing plate 312 is covered on one side of the sealing ring 311. The liquid hole 3111 is provided at the center of the sealing plate 312 for conducting liquid. The sealing plate 312 abuts against the protrusion 32. In this embodiment, the sealing member 31 is a silicone seal. The silicone material has high elasticity and good flexibility. It can be deformed under the action of liquid pressure and can quickly return to its original shape when there is no hydraulic action. Not only that, silicone also has good chemical stability and will not denature even if it is immersed in liquid medicine for a long time, which greatly increases the service life of the sealing member 31.

[0031] The surface of the sealing plate 312 facing the protrusion 32 is provided with a first boss 3121, see Figure 4 The surface of the first boss 3121 facing the boss 32 is provided with a plurality of pads 3122, and the plurality of pads 3122 are arranged in a ring shape. In this embodiment, the number of pads 3122 is 6, and the 6 pads 3122 are arranged in a ring shape and the distances between the pads 3122 are the same. The setting of the first boss 3121 and the pads 3122 can make it difficult for the sealing plate 312 to adhere to the first joint 2, and make the sealing plate 312 easier to deform; a sealing groove 3123 is provided in the center recess of the first boss 3121 to cooperate with the use of the seal 31.

[0032] Specifically, a first protrusion 322 is protruded from the surface of the protrusion 32 facing away from the first joint 2, and the first protrusion 322 is tightly pressed against the sealing groove 3123. The provision of the first protrusion 322 can reduce the contact area between the protrusion 32 and the sealing groove 3123, so that when the liquid flows in the forward direction, the protrusion 32 and the sealing groove 3123 are easier to separate and allow the liquid to pass through. When the liquid flows in the reverse direction, the first protrusion 322 can quickly contact the sealing groove 3123, thereby improving the sealing effect, improving the liquid blocking efficiency, and increasing the reliability of anti-backflow.

[0033] Specifically, a first annular abutment plate 22 is circumferentially provided at the end of the first joint 2 close to the first connecting pipe 11. The first annular abutment plate 22 is arranged perpendicular to the outer wall of the first joint 2. A first annular mounting ring 23 is protruded from the side of the first annular abutment plate 22 away from the first joint 2. Specifically, the first annular mounting ring 23 is protruded in an annular shape on the side of the first annular abutment plate 22 away from the first joint 2, and the first annular mounting ring 23 is arranged perpendicular to the first annular abutment plate 22.

[0034] Please refer to Figure 4The end of the first connecting tube 11 close to the first joint 2 is provided with a second annular abutment plate 112 along the circumferential direction. The second annular abutment plate 112 is arranged perpendicular to the outer wall of the first connecting tube 11. The side of the second annular abutment plate 112 away from the first connecting tube 11 is convexly provided with a first annular abutment ring 113 and a second annular abutment ring 114. The first annular abutment ring 113 is arranged around the outside of the second annular abutment ring 114. An abutment groove 115 is formed between the first annular abutment ring 113 and the second annular abutment ring 114. The first annular mounting ring 23 is clamped in the abutment groove 115. In a specific embodiment, the first annular mounting ring 23 and the abutment groove 115 can also be ultrasonically welded. The second protrusion 3112 is abutted against the second annular abutment plate 112, and the setting of the second protrusion 3112 creates a certain space between the sealing ring 311 and the second annular abutment plate 112, so that the sealing ring 311 has a deformation space.

[0035] Please refer to Figure 3 The three-way valve body 1 also includes: a plug hole 14 and a valve core 5. The plug hole 14 passes through the three-way valve body 1 and is respectively connected to the first connecting pipe 11, the second connecting pipe 12, and the third connecting pipe 13. Specifically, the plug hole 14 passes through the three-way valve body 1 in the radial direction of the main flow channel 111. The valve core 5 is plugged into the plug hole 14 and the valve core 5 can rotate relative to the three-way valve body 1; a main passage 511 and a bypass passage 512 are provided inside the valve core 5. During the rotation of the valve core 5, the main passage 511 is connected to the main flow channel 111 to realize the communication between the first connecting pipe 11 and the second connecting pipe 12, or, part of the main passage 511 and the bypass passage 512 are connected to the main flow channel 111 and the branch channel to realize the communication between the first connecting pipe 11 and the third connecting pipe 13.

[0036] When the valve core 5 is inserted into the plug hole 14, the outer wall of the valve core 5 is tightly fitted with the inner wall of the plug hole 14 to improve the sealing performance between the three-way valve body 1 and the valve core 5. In this embodiment, the interference fit amount between the valve core 5 and the plug hole 14 is 0.1mm-0.2mm. When the interference fit amount between the valve core 5 and the plug hole 14 is less than 0.1mm, the valve core 5 and the three-way valve body 1 only contact each other, and no force is generated between the valve core 5 and the three-way valve body 1, and a good sealing effect cannot be achieved; when the interference fit amount between the valve core 5 and the plug hole 14 is greater than 0.2mm, the force between the valve core 5 and the three-way valve body 1 is too large, which will affect the assembly. The user needs to use a large force to rotate the valve core 5, which will bring inconvenience to the operation.

[0037] The valve core 5 includes a connected valve core body 51 and a rotating handle 52. The valve core body 51 is inserted into the plug hole 14, and the rotating handle 52 is arranged to extend radially along the valve core body 51. The rotating handle 52 and the valve core body 51 are manufactured by injection molding. The valve core body 51 is cylindrical, and the rotating handle 52 extends radially along the valve core body 51. The outer side surface of the rotating handle 52 is convexly provided with anti-slip ribs 521 for anti-slip. Multiple anti-slip ribs 521 are evenly spaced along the outer side surface of the rotating handle 52, which can improve the user experience.

[0038] The three-way valve body 1 also includes a rotating sleeve 4, please refer to Figure 3 The rotating sleeve 4 is sleeved on the outside of the second connecting tube 12 and the rotating sleeve 4 and the second connecting tube 12 rotate relative to each other. The rotating sleeve 4 includes a connected abutting section 41 and a sleeve section 42. The inner side wall of the abutting section 41 is provided with an abutting step 411. The corresponding position of the outer side wall of the second connecting tube 12 is circumferentially protruded with an abutting protrusion 121. The abutting step 411 abuts against the abutting protrusion 121. The abutting protrusion 121 is used to limit the abutting step 411, thereby limiting the rotating sleeve 4 to prevent the rotating sleeve 4 from separating from the second connecting tube 12 when rotating; the inner wall of the sleeve section 42 is provided with a spiral pattern 421 for connecting to another joint of the connecting pipeline.

[0039] In a specific embodiment, a three-way one-way valve is installed in the connecting pipeline of the invasive pressure sensor. The pressure testing device, the liquid return device, the three-way one-way valve, and the three-way one-way valve and the patient are all connected via connecting pipelines. Specifically, the first connector 2, the second connecting tube 12, and the third connecting tube 13 are connected to the patient end, the liquid return device, and the blood sampling device, respectively. When the invasive pressure sensor is performing a pressure test, the pressure testing device, the liquid return device, the second connecting tube 12, the first connector 2, and the patient end are connected. By turning the handle 52 to drive the valve core 51 to rotate, the main passage 511 is connected to the main flow channel 111, and the patient end, the first connector 2, the first connecting tube 11, the second connecting tube 12, the liquid return device, and the pressure testing device are connected. The pressure testing device can monitor the patient's vascular pressure and obtain physiological parameters such as systolic pressure, diastolic pressure, and mean arterial pressure of the blood vessels at the tested site. If sampling and blood drawing are required, the patient end, the first connector 2, the third connecting tube 13, and the blood collection device must be connected. At this time, the rotating handle 52 is turned to drive the valve core 51 to rotate, and part of the main passage 511 and the bypass passage 512 are connected to the main channel 111 and the branch channel. The first connecting tube 11 is connected to the third connecting tube 13. The patient's blood flows into the blood collection device through the first connector 2, the first connecting tube 11, and the third connecting tube 13, which can avoid repeated puncture of the patient's skin and reduce the patient's pain. In this embodiment, a one-way valve member 3 is provided between the first connecting tube 11 and the first connector 2 so that the patient's blood can only flow in one direction from the first connector 2 to the first connecting tube 11. At this time, the liquid flows from the first connector 2 through the liquid flow gap 321 and the liquid hole 3111 in sequence into the three-way valve body 1. If the pressure in the connecting pipeline changes due to the rotation of the handle 52, the valve core 51 or other uncontrollable factors during operation, causing liquid backflow, at this time, the liquid flows from the three-way valve body 1 to the first connector 2. Under the action of hydraulic pressure, the sealing member 31 moves in the direction of the protrusion 32 until the protrusion 32 blocks the liquid hole 3111 to block the reverse flow of the liquid, thereby preventing the liquid from flowing back from the three-way one-way valve to the patient end, reducing the patient's discomfort.

[0040] The three-way one-way valve disclosed by the utility model can effectively prevent the pressure change in the pipeline caused by rotating the handle and the valve core during operation from flowing back the liquid in the three-way one-way valve to the patient end by arranging a one-way valve component between the first connecting pipe and the first joint through the cooperation of the sealing component and the protrusion, thereby effectively reducing the discomfort of the patient and solving the technical defect that the three-way valve in the related art does not have the anti-backflow function. The utility model has strong practicality and is suitable for large-scale production and use.

[0041] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art who can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A three-way one-way valve, characterized in that: include: A three-way valve body, a first connector, and a one-way valve member. The three-way valve body and the first connector are cooperatively connected to form an accommodating cavity. The one-way valve member is disposed in the accommodating cavity to block or conduct liquid. The one-way valve component includes: a sealing member and a protrusion, wherein the sealing member is provided with a liquid passage hole; a first channel connected to the accommodating cavity is provided in the first joint, the protrusion is provided on the inner wall of the first channel and a liquid flow gap is provided between the protrusion and the inner wall of the first channel; the sealing member abuts against the protrusion, and the position of the protrusion corresponds to the liquid passage hole.

2. A three-way one-way valve according to claim 1, characterized in that: The three-way valve body includes a first connecting pipe, a second connecting pipe, and a third connecting pipe that are interconnected. The first connecting pipe and the second connecting pipe are arranged on the same straight line. The first connecting pipe and the second connecting pipe form a main channel inside. The third connecting pipe is arranged at an angle to the first connecting pipe, and the third connecting pipe forms a branch channel inside. The first connecting pipe is cooperatively connected to the first joint, and the accommodating chamber is arranged between the first connecting pipe and the first joint.

3. A three-way one-way valve according to claim 2, characterized in that: Seals include: The sealing ring and the sealing plate are arranged on one side of the sealing ring, the liquid hole is arranged at the center of the sealing plate, and the sealing plate abuts against the protrusion.

4. A three-way one-way valve according to claim 3, characterized in that: A first boss is provided on the surface of the sealing plate facing the protrusion, and a plurality of pads are provided on the surface of the first boss facing the protrusion. The plurality of pads are arranged in a ring shape; a sealing groove is provided in the center recess of the first boss.

5. A three-way one-way valve according to claim 4, characterized in that: A first convex ring is convexly provided on the surface of the convex block facing away from the first joint, and the first convex ring is tightly pressed against the blocking groove.

6. A three-way one-way valve according to claim 3, characterized in that: A first annular abutment plate is circumferentially provided at the end of the first joint close to the first connecting pipe. The first annular abutment plate is perpendicular to the outer wall of the first joint. A first annular mounting ring is protruded from one side of the first annular abutment plate away from the first joint.

7. A three-way one-way valve according to claim 6, characterized in that: The end of the first connecting tube close to the first joint is circumferentially provided with a second annular abutment plate, and the second annular abutment plate is arranged perpendicular to the outer wall of the first connecting tube. The side of the second annular abutment plate away from the first connecting tube is protruding with a first annular abutment ring and a second annular abutment ring. The first annular abutment ring is arranged around the outside of the second annular abutment ring, and an abutment groove is formed between the first annular abutment ring and the second annular abutment ring. The first annular mounting ring is clamped in the abutment groove; the circumferential outer surface of the sealing ring is tightly fitted with the radial inner surface of the second annular abutment ring, and the end of the sealing ring away from the sealing plate abuts against the second annular abutment plate.

8. The three-way one-way valve according to claim 2, characterized in that: The three-way valve body also includes: a plug-in hole and a valve core. The plug-in hole runs through the three-way valve body and is respectively connected to the first connecting pipe, the second connecting pipe, and the third connecting pipe. The valve core is plugged into the plug-in hole and can rotate relative to the three-way valve body. A main passage and a bypass passage are provided inside the valve core. The valve core is rotated to connect the main passage to the main flow channel or the bypass passage to the main flow channel.

9. The three-way one-way valve according to claim 8, characterized in that: The valve core is inserted into the insertion hole with interference fit.

10. The three-way one-way valve according to claim 8, characterized in that: The valve core comprises a valve core body and a rotating handle which are connected to each other. The valve core body is inserted into the inserting hole, and the rotating handle is extended along the radial direction of the valve core body.

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