Three-way valve

Abstract

The utility model discloses a three-way valve, relates to the technical field of valves, and solves the technical problem that an existing three-way valve easily causes medicine pollution due to the structure of a valve body. The three-way valve comprises a valve body, a valve element and a sealing assembly, a first connecting pipe, a second connecting pipe and a third connecting pipe which are communicated with one another are arranged on the valve body, the valve element is rotatably arranged in the valve body, a three-way channel which can be communicated with the first connecting pipe, the second connecting pipe and the third connecting pipe is arranged on the valve element, and therefore the three-way valve is formed. A wrench is arranged on the valve element, the sealing assemblies are arranged at the positions, corresponding to the first connecting pipe, the second connecting pipe and the third connecting pipe, of the inner wall of the valve body, and the sealing assemblies abut against the side wall of the valve element in a sealed mode.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a three-way valve. Background Technology

[0002] A three-way valve is a valve with three fluid channels. By rotating or moving the valve core, the flow direction of the fluid can be switched, the flow rate can be adjusted, or the fluid can be mixed and split. As a core connecting device in medical pipeline systems, medical three-way valves are widely used in clinical scenarios such as intravenous infusion, intraoperative emergency drug administration, intensive care and multi-pathway treatment, anesthesia and respiratory support, and postoperative drainage and fluid management due to their multi-channel switching, precise flow control and high safety.

[0003] However, in existing medical three-way valves, drug residues inevitably remain during valve rotation, and the sealing performance may affect the mixing of different medications, potentially harming patients. Additionally, when administering medication through the injection port, the sealing cap must be removed, which is prone to falling off during the removal process, making it inconvenient for doctors to operate and prone to contamination.

[0004] In view of the above-mentioned problems of the existing device, it is necessary to design a three-way valve with better sealing effect and reduced pollution. Utility Model Content

[0005] In view of this, the present invention provides a three-way valve, which aims to solve the technical problem that existing three-way valves are prone to drug contamination due to the valve body structure.

[0006] To solve the aforementioned technical problems, the present invention adopts the following technical solution:

[0007] A three-way valve includes a valve body, a valve core, and a sealing assembly.

[0008] The valve body is provided with a first connecting pipe, a second connecting pipe, and a third connecting pipe that are interconnected. The valve core is rotatably disposed within the valve body. The valve core is provided with a three-way channel that can communicate with the first connecting pipe, the second connecting pipe, and the third connecting pipe, thereby forming a three-way valve. The valve core is provided with a wrench.

[0009] The valve body inner wall is provided with the sealing assembly at the first, second and third connecting pipes, and the sealing assembly is in sealing contact with the valve core side wall.

[0010] In this utility model, it should be noted that the valve body has a cylindrical structure with an internal cavity. The first, second, and third connecting pipes are arranged at 90° intervals on the side wall of the valve body. Each of the first, second, and third connecting pipes has a through hole extending axially, and each through hole communicates with the internal cavity of the valve body, thereby forming a three-way valve. Furthermore, it should be noted that the cavity extends through the upper end of the valve body, and the lower end of the wrench is inserted into the cavity and connected to the upper end of the valve core. By rotating the wrench, the valve core is rotated to adjust the channel.

[0011] Furthermore, in this invention, the three-way channel is composed of three sub-channels, which are arranged sequentially at 90° intervals. Each sub-channel penetrates the side wall of the valve core to form three interfaces. The function of the sealing assembly is to form individual seals at the interfaces of the first connector, the second connector, and the third connector with their corresponding three-way channels. Taking the first interface as an example, the first interface corresponds to one of the interfaces of the three-way channel, and the sealing assembly forms a seal between the first interface and the interface of the three-way channel, thereby preventing liquid entering the valve core through the first interface from flowing into the gap between the valve core and the valve body, and reducing the occurrence of contamination.

[0012] Preferably, the sealing assembly includes a sealing ring and a second elastic element.

[0013] One end of the sealing ring is provided with a plurality of second elastic elements, which are connected to the inner wall of the valve body. The side of the sealing ring near the valve core is provided with an arc shape that fits the valve core.

[0014] After adopting this technical solution, it should be noted that the function of the second elastic element is to provide elastic force to make the sealing ring abut against the valve core, and the sealing ring is provided with an arc that matches the curvature of the outer wall of the valve core, so that the sealing ring and the side wall of the valve core fit more tightly, thereby achieving a better sealing effect.

[0015] Preferably, the side of the sealing ring closest to the valve core is covered with silicone material, thereby further increasing the fit between the sealing ring and the valve body sidewall and further improving the sealing effect.

[0016] Preferably, the inner wall of the valve body is provided with an annular groove corresponding to the first connecting pipe, the second connecting pipe and the third connecting pipe, the sealing ring is disposed in the annular groove, and the second elastic element is connected to the annular groove.

[0017] After adopting this technical solution, it should be noted that the annular groove is provided to support the second elastic element. As described above, the first, second, and third connecting pipes are provided with through holes running axially through them, and these through holes communicate with the inside of the valve body. Annular grooves are provided at the points where the through holes in the first, second, and third connecting pipes communicate with the inside of the valve body. The annular grooves are located on the periphery of the through holes. Simply put, the diameter of the annular groove is larger than the diameter of the through hole. When the second elastic element is at its free length, the sealing ring will pass through the annular groove and extend towards the valve body. Under the action of the valve core, the valve core will squeeze the sealing ring, thereby compressing the second elastic element and generating elastic force. Under the action of this elastic force, the sealing ring abuts against the side wall of the valve core to achieve a fit.

[0018] Preferably, four second elastic elements are evenly distributed circumferentially at one end of the sealing ring to provide a more uniform elastic force to the sealing ring, which is beneficial to improving the sealing effect.

[0019] Preferably, the valve core sidewall has an annular sealing groove corresponding to the three-way channel, and the sealing ring can be placed in the sealing groove.

[0020] When this technical solution is adopted, the sealing ring rotates relative to the valve core when the wrench is turned to adjust the channel. As the valve core rotates, the sealing groove will correspond to or be offset from the sealing ring. When the sealing ring and the sealing groove correspond, under the elastic force of the second elastic element, the front end of the sealing ring will be pushed into the sealing groove, further enhancing the sealing performance and effectively preventing the liquid medicine from flowing into the gap between the inner wall of the valve body and the valve core.

[0021] Preferably, the valve core sidewall has a groove along the circumference, the three-way channel and the sealing groove are both located in the groove, and the sealing ring can be placed in the groove.

[0022] After adopting this technical solution, it should be noted that when the sealing ring and the sealing groove are not mated, the side of the sealing ring closest to the valve core will be placed in the groove. With the sealing ring end face matching the valve core side wall, a better sealing effect can be achieved.

[0023] Preferably, the outer wall of the sealing ring is provided with a second inclined portion along the circumference, and the side wall of the sealing groove is provided with a first inclined portion that fits with the second inclined portion.

[0024] After adopting this technical solution, it should be noted that, on the one hand, the setting of the first inclined part can guide the sealing ring to spring into the sealing groove when the valve core rotates to the point where the sealing ring corresponds to the sealing groove. On the other hand, in conjunction with the second inclined part, when the wrench is turned during the process of the sealing ring and the sealing groove engaging, the first inclined part and the second inclined part cooperate with each other to more easily compress the second elastic element, so that the sealing ring is disengaged from the sealing groove, making it easier to adjust by turning the wrench.

[0025] Preferably, the valve core sidewall is also provided with a limiting component, and the inner wall of the valve body is provided with a plurality of limiting holes that can cooperate with the limiting component. The four limiting holes are evenly distributed on the inner wall of the valve body, and three of the limiting holes correspond to the first connecting pipe, the second connecting pipe and the third connecting pipe, respectively.

[0026] After adopting this technical solution, it should be noted that during the process of turning the wrench, when the limiting component rotates to correspond with any limiting hole, the limiting component will cooperate with the limiting hole to achieve the limiting. During the limiting, the limiting resistance can be clearly felt, which makes it easier for medical staff to operate.

[0027] In addition, it should be noted that in the default state, the limiting component cooperates with the limiting hole of the corresponding first pipe, and at this time the first pipe, the second pipe and the third pipe are all in a connected state;

[0028] Finally, it should be noted that there are four limiting holes, which are evenly distributed around the inner wall of the valve body. Three of the limiting holes correspond to the first connecting pipe, the second connecting pipe, and the third connecting pipe, respectively.

[0029] Preferably, the limiting component includes a limiting member and a first elastic member.

[0030] The valve core has a blind hole, the first elastic element is placed in the blind hole, the first elastic element is connected between the limiting element and the blind hole, and the limiting element can cooperate with the limiting hole to limit the position.

[0031] After adopting this technical solution, it should be noted that under the extrusion of the valve core, the limiting member is subjected to pressure, which causes the first elastic member to compress and generate elastic force, thereby causing the limiting member to abut against the inner wall of the valve body until the limiting member corresponds to the limiting hole. The first elastic member then causes the limiting member to spring into the limiting hole to achieve the limiting.

[0032] In addition, it should be noted that the limiting component is hemispherical at the end near the valve body, which makes it easier to release the limit and reduces rotational resistance.

[0033] Preferably, the first, second, and third connecting pipes are respectively threaded with a first sealing cap, a second sealing cap, and a third sealing cap. The first sealing cap and the first connecting pipe are respectively provided with a first connecting ear and a second connecting ear, and a connecting rope is provided between the first connecting ear and the second connecting ear.

[0034] After adopting this technical solution, it should be noted that the first connecting pipe is a drug injection pipe, so the first sealing cap will be opened frequently, which may cause the first sealing cap to fall off and cause pollution. The first sealing cap is connected to the first connecting pipe by a connecting rope to prevent the first sealing cap from falling off and reduce the risk of pollution. In addition, the threaded connection is existing technology and will not be described in detail here.

[0035] Preferably, the first sealing cap has a rotating groove at one end, and a circular plate is connected to one end of the first connecting ear. The circular plate is placed in the rotating groove and is rotatably connected to the rotating groove.

[0036] After adopting this technical solution, it should be noted that by rotating the first connecting ear to the first sealing cap, the connecting rope can be prevented from getting tangled due to the rotation of the first sealing cap during the process of removing or installing the first sealing cap.

[0037] Preferably, the valve core is provided with a limiting ring in the circumferential direction, and the inner wall of the valve body is provided with a limiting groove corresponding to the limiting ring. The limiting ring is placed in the limiting groove, and the limiting ring and the limiting groove are slidably connected.

[0038] After adopting this technical solution, it should be noted that the limiting ring and the limiting groove work together to form a seal and prevent internal liquid from leaking out.

[0039] The steps for using this utility model are as follows:

[0040] In the default state, the first, second, and third connecting pipes are all in a connected state. The limiting component engages with the limiting hole corresponding to the first connecting pipe, and the sealing ring of the sealing component engages with the sealing groove. When the wrench is turned, the limiting component contracts inward under pressure until it disengages from the limiting hole. During this process, under the action of the first and second inclined parts, the sealing ring is compressed, causing the second elastic element to compress until the sealing ring disengages from the corresponding sealing groove. When the wrench is turned to another channel, the limiting component engages with the corresponding limiting hole to limit the connection, and the sealing rings of the two connected channels engage with the corresponding sealing grooves to seal.

[0041] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0042] 1. The present invention provides a three-way valve, which, by setting a sealing component, forms a separate seal at the interface of the first connecting pipe, the second connecting pipe and the third connecting pipe with the corresponding three-way channel. Taking the first interface as an example, the first interface corresponds to one of the interfaces of the three-way channel, and the sealing component forms a seal between the first interface and the interface of the three-way channel, thereby preventing the liquid entering the valve core through the first interface from flowing into the gap between the valve core and the valve body, and reducing the occurrence of contamination.

[0043] 2. The three-way valve provided by this utility model achieves a better sealing effect by setting an arc on the sealing ring that matches the arc of the outer wall of the valve core.

[0044] 3. The three-way valve provided by this utility model, by setting a sealing groove, under the elastic force of the second elastic element, the front end of the sealing ring will be bounced into the sealing groove, further enhancing the sealing performance and effectively preventing the liquid medicine from flowing into the gap between the inner wall of the valve body and the valve core.

[0045] 4. The three-way valve provided by this utility model, by setting a limiting component, can clearly feel the limiting resistance when the limiting component is rotated to correspond with any limiting hole during the process of turning the wrench, thereby facilitating operation by medical personnel.

[0046] 5. The three-way valve provided by this utility model connects the first sealing cap to the first connecting pipe through a connecting rope, preventing the first sealing cap from falling off and reducing the risk of contamination.

[0047] 6. The three-way valve provided by this utility model, by rotating the first connecting ear to the first sealing cap, can prevent the connecting rope from getting tangled due to the rotation of the first sealing cap during the process of removing or installing the first sealing cap. Attached Figure Description

[0048] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0049] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0050] Figure 2 This is an exploded view of the overall structure of this utility model;

[0051] Figure 3 This is a schematic diagram showing the connection between the sealing assembly and the valve body of this utility model;

[0052] Figure 4 This utility model Figure 1 Sectional view along line AA;

[0053] Figure 5 This is a schematic diagram of the sealing assembly structure of this utility model;

[0054] Figure 6 This is a structural diagram of the valve body of this utility model.

[0055] Figure label:

[0056] 1-Valve body, 2-Wrench, 3-First connecting pipe, 4-Second connecting pipe, 5-Third connecting pipe, 6-Valve core, 601-Groove, 7-Channel, 8-Sealing groove, 801-First inclined part, 9-Limiting assembly, 901-Limiting element, 902-First elastic element, 10-Limiting ring, 11-Limiting hole, 12-First sealing cap, 13-Second sealing cap, 14-Third sealing cap, 15-First connecting ear, 16-Second connecting ear, 17-Sealing assembly, 1701-Sealing ring, 1702-Second inclined part, 1703-Second elastic element, 18-Annular groove, 19-Limiting groove, 20-Connecting rope, 21-Circular plate, 22-Rotating groove. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0058] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility product is in use. They 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0059] The following is combined Figures 1-6 This utility model will be described in detail.

[0060] Example 1

[0061] A three-way valve, such as Figures 1-6 As shown, it includes a valve body 1, a valve core 6, and a sealing assembly 17.

[0062] The valve body 1 is provided with a first connecting pipe 3, a second connecting pipe 4, and a third connecting pipe 5 that are interconnected. The valve core 6 is rotatably disposed within the valve body 1. The valve core 6 is provided with a three-way channel 7 that can communicate with the first connecting pipe 3, the second connecting pipe 4, and the third connecting pipe 5, thereby forming a three-way valve. The valve core 6 is provided with a wrench 2.

[0063] The valve body 1 is provided with sealing components 17 at the locations corresponding to the first connecting pipe 3, the second connecting pipe 4 and the third connecting pipe 5 on the inner wall of the valve body 1. The sealing components 17 are in sealing contact with the side wall of the valve core 6.

[0064] The sealing assembly 17 includes a sealing ring 1701 and a second elastic element 1703.

[0065] One end of the sealing ring 1701 is provided with a plurality of second elastic elements 1703, the second elastic elements 1703 are connected to the inner wall of the valve body 1, and the side of the sealing ring 1701 near the valve core 6 is provided with an arc shape that fits the valve core 6, so that the sealing ring 1701 fits more tightly with the side wall of the valve core 6.

[0066] The sealing ring 1701 is covered with silicone material on the side near the valve core 6, thereby further increasing the fit between the sealing ring 1701 and the side wall of the valve body 1 and further improving the sealing effect.

[0067] The inner wall of the valve body 1 is provided with an annular groove 18 corresponding to the first connecting pipe 3, the second connecting pipe 4 and the third connecting pipe 5. The sealing ring 1701 is disposed in the annular groove 18, and the second elastic element 1703 is connected to the annular groove 18.

[0068] The valve core 6 is provided with a limiting ring 10 in the circumferential direction, and the inner wall of the valve body 1 is provided with a limiting groove 19 corresponding to the limiting ring 10. The limiting ring 10 is placed in the limiting groove 19, and the limiting ring 10 and the limiting groove 19 are slidably connected.

[0069] In this embodiment, the valve body 1 has a cylindrical structure with an internal cavity. The first connecting pipe 3, the second connecting pipe 4, and the third connecting pipe 5 are arranged at 90° intervals on the side wall of the valve body 1. Each of the first connecting pipe 3, the second connecting pipe 4, and the third connecting pipe 5 has a through hole extending axially, and each through hole communicates with the internal cavity of the valve body 1, thereby forming a three-way valve. It should also be noted that the cavity extends through the upper end of the valve body 1, and the lower end of the wrench 2 is inserted into the cavity and connected to the upper end of the valve core 6. By rotating the wrench 2, the valve core 6 is rotated to adjust the channel 7. The three-way channel 7 consists of three sub-channels 7. The valve core 6 is constructed with three sub-channels 7 arranged at 90° intervals. Each sub-channel 7 penetrates the side wall of the valve core 6 to form three interfaces. The function of the sealing assembly 17 is to form individual seals at the interfaces of the first connecting pipe 3, the second connecting pipe 4, and the third connecting pipe 5 with their corresponding three-way channels 7. Taking the first interface as an example, the first interface corresponds to one of the interfaces of the three-way channel 7, and the sealing assembly 17 forms a seal between the first interface and the interface of the three-way channel 7, thereby preventing liquid entering the valve core 6 through the first interface from flowing into the gap between the valve core 6 and the valve body 1, and reducing the occurrence of contamination.

[0070] Example 2

[0071] The difference between this embodiment and Embodiment 1 is that, as Figure 5 As shown, four second elastic elements 1703 are evenly arranged circumferentially at one end of the sealing ring 1701 to provide a more uniform elastic force for the sealing ring 1701, which is beneficial to improving the sealing effect.

[0072] like Figure 2 As shown, the valve core 6 has an annular sealing groove 8 on its side wall corresponding to the three-way channel 7, and the sealing ring 1701 can be placed in the sealing groove 8.

[0073] like Figure 2 As shown, the valve core 6 has a groove 601 circumferentially formed on its side wall. The three-way channel 7 and the sealing groove 8 are both located in the groove 601, and the sealing ring 1701 can be placed in the groove 601.

[0074] In this embodiment, when the wrench 2 is turned to adjust the channel 7, the sealing ring 1701 rotates relative to the valve core 6. As the valve core 6 rotates, the sealing groove 8 will correspond to or be offset from the sealing ring 1701. When the sealing ring 1701 and the sealing groove 8 correspond, under the elastic force of the second elastic element 1703, the front end of the sealing ring 1701 will be pushed into the sealing groove 8, further enhancing the sealing performance and effectively preventing the liquid from flowing into the gap between the inner wall of the valve body 1 and the valve core 6. When the sealing ring 1701 and the sealing groove 8 are not engaged, the side of the sealing ring 1701 near the valve core 6 will be placed in the groove 601. With the end face of the sealing ring 1701 fitting with the side wall of the valve core 6, a better sealing effect is achieved.

[0075] Example 3

[0076] The difference between this embodiment and Embodiment 2 is that, as Figure 2 , Figure 5 As shown, the outer wall of the sealing ring 1701 is provided with a second inclined portion 1702 along the circumferential direction, and the side wall of the sealing groove 8 is provided with a first inclined portion 801 that fits with the second inclined portion 1702.

[0077] In this embodiment, the first inclined part 801 is provided so that when the valve core 6 rotates to the point where the sealing ring 1701 corresponds to the sealing groove 8, it can guide the sealing ring 1701 to spring into the sealing groove 8. On the other hand, in conjunction with the second inclined part 1702, when the wrench 2 is rotated during the engagement of the sealing ring 1701 and the sealing groove 8, the first inclined part 801 and the second inclined part 1702 cooperate to make it easier to compress the second elastic element 1703, so that the sealing ring 1701 is disengaged from the sealing groove 8, making it easier to adjust by rotating the wrench 2.

[0078] Example 4

[0079] The difference between this embodiment and embodiment 3 is that, as Figures 2-4 As shown, the valve core 6 is also provided with a limiting component 9 on its side wall. The valve body 1 has four limiting holes 11 that can cooperate with the limiting component 9 on its inner wall. The four limiting holes 11 are evenly distributed on the inner wall of the valve body 1, and three of the limiting holes 11 correspond to the first connecting pipe 3, the second connecting pipe 4 and the third connecting pipe 5, respectively.

[0080] The limiting component 9 includes a limiting member 901 and a first elastic member 902.

[0081] The valve core 6 has a blind hole, the first elastic element 902 is placed in the blind hole, the first elastic element 902 is connected between the limiting element 901 and the blind hole, and the limiting element 901 can cooperate with the limiting hole 11 to limit the position.

[0082] In this embodiment, under the pressure of the valve core 6, the limiting member 901 is compressed, causing the first elastic member 902 to compress and generate elastic force, thereby causing the limiting member 901 to abut against the inner wall of the valve body 1 until the limiting member 901 corresponds to the limiting hole 11. The first elastic member 902 causes the limiting member 901 to spring into the limiting hole 11 to achieve the limiting.

[0083] In addition, the limiting member 901 is hemispherical at the end near the valve body 1, which makes it easier to release the limit and reduces rotational resistance.

[0084] Example 5

[0085] The difference between this embodiment and embodiment 4 is that, as Figure 1As shown, the first connecting pipe 3, the second connecting pipe 4 and the third connecting pipe 5 are respectively threaded with a first sealing cap 12, a second sealing cap 13 and a third sealing cap 14. The first sealing cap 12 and the first connecting pipe 3 are respectively provided with a first connecting ear 15 and a second connecting ear 16. A connecting rope 20 is provided between the first connecting ear 15 and the second connecting ear 16.

[0086] In this embodiment, the first connecting pipe 3 is a drug injection pipe, so the first sealing cap 12 will be opened frequently, which may cause the first sealing cap 12 to fall off and cause pollution. The first sealing cap 12 is connected to the first connecting pipe 3 by the connecting rope 20 to prevent the first sealing cap 12 from falling off and reduce the risk of pollution. In addition, the threaded connection is existing technology and will not be described in detail here.

[0087] Example 6

[0088] The difference between this embodiment and embodiment 5 is that, Figure 4 As shown, the first sealing cap 12 has a rotating groove 22 at one end, and a circular plate 21 is connected to one end of the first connecting ear 15. The circular plate 21 is placed in the rotating groove 22 and is rotatably connected to the rotating groove 22.

[0089] In this embodiment, by rotating the first connecting ear 15 to the first sealing cap 12, the connecting rope 20 can be prevented from getting tangled due to the rotation of the first sealing cap 12 during the removal or installation of the first sealing cap 12.

[0090] The steps for using this utility model are as follows:

[0091] In the default state, the first connector 3, the second connector 4, and the third connector 5 are all in a connected state. The limiting component 9 engages with the limiting hole 11 corresponding to the first connector 3, and the sealing ring 1701 of the sealing component 17 engages with the sealing groove 8. When the wrench 2 is turned, the limiting component 901 is compressed inward until it disengages from the limiting hole 11. During this process, under the action of the first inclined part 801 and the second inclined part 1702, the sealing ring 1701 is compressed, causing the second elastic element 1703 to compress until the sealing ring 1701 disengages from the corresponding sealing groove 8. After the wrench 2 is turned to another channel 7, the limiting component 9 and the corresponding limiting hole 11 engage to limit the movement, and the sealing rings 1701 of the two connected channels 7 engage with the corresponding sealing grooves 8 to seal.

[0092] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A three-way valve characterized by, Includes valve body (1), valve core (6), and sealing assembly (17), The valve body (1) is provided with a first connecting pipe (3), a second connecting pipe (4), and a third connecting pipe (5) that are interconnected. The valve core (6) is rotatably disposed inside the valve body (1). The valve core (6) is provided with a three-way channel (7) that can communicate with the first connecting pipe (3), the second connecting pipe (4), and the third connecting pipe (5), thereby forming a three-way valve. The valve core (6) is provided with a wrench (2). The valve body (1) is provided with sealing components (17) at the locations corresponding to the first connecting pipe (3), the second connecting pipe (4) and the third connecting pipe (5) on its inner wall. The sealing components (17) are in sealing contact with the side wall of the valve core (6).

2. A three-way valve according to claim 1, characterized in that: The sealing assembly (17) includes a sealing ring (1701) and a second elastic element (1703). The sealing ring (1701) has a plurality of second elastic elements (1703) at one end. The second elastic elements (1703) are connected to the inner wall of the valve body (1). The sealing ring (1701) has an arc shape that fits the valve core (6) on the side near the valve core (6).

3. A three-way valve according to claim 2, characterized in that: The valve body (1) has an annular groove (18) on its inner wall corresponding to the first connecting pipe (3), the second connecting pipe (4) and the third connecting pipe (5). The sealing ring (1701) is located in the annular groove (18), and the second elastic element (1703) is connected to the annular groove (18).

4. A three-way valve according to claim 2, characterized in that: The valve core (6) has an annular sealing groove (8) on its side wall corresponding to the three-way channel (7), and the sealing ring (1701) can be placed in the sealing groove (8).

5. A three-way valve according to claim 4, characterized in that: The valve core (6) has a groove (601) on its side wall along the circumference. The three-way channel (7) and the sealing groove (8) are both located in the groove (601). The sealing ring (1701) can be placed in the groove (601).

6. A three-way valve according to claim 4, wherein The outer wall of the sealing ring (1701) is provided with a second inclined portion (1702) along the circumferential direction, and the side wall of the sealing groove (8) is provided with a first inclined portion (801) that fits with the second inclined portion (1702).

7. A three-way valve according to any one of claims 1-6, characterized in that: The valve core (6) is also provided with a limiting component (9) on its side wall. The valve body (1) has a plurality of limiting holes (11) that can cooperate with the limiting component (9) on its inner wall. The four limiting holes (11) are evenly distributed on the inner wall of the valve body (1), and three of the limiting holes (11) correspond to the first connecting pipe (3), the second connecting pipe (4) and the third connecting pipe (5) respectively.

8. A three-way valve according to claim 7, characterized in that: The limiting component (9) includes a limiting member (901) and a first elastic member (902). The valve core (6) has a blind hole, the first elastic element (902) is placed in the blind hole, the first elastic element (902) is connected between the limiting element (901) and the blind hole, and the limiting element (901) can cooperate with the limiting hole (11) to limit the position.

9. A three-way valve according to any one of claims 1-6, characterized in that: The first connecting lug (15) and the second connecting lug (16) are provided with a connecting rope (20).

10. A three-way valve according to claim 9, characterized in that: The first sealing cap (12) is provided with a rotating groove (22) at the end, and the first connecting lug (15) is connected with a circular plate (21) at one end, which is placed in the rotating groove (22) and is in rotating connection with the rotating groove (22).

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