A tee valve

Abstract

The application provides a three-way valve, and relates to the technical field of valves. The three-way valve comprises a valve seat, a rotating shaft, a rotating disc and an actuator. The rotating disc is rotatably arranged in the valve seat. The rotating shaft penetrates the valve seat and the rotating disc. The rotating shaft is coaxially connected with the rotating disc. The actuator is arranged on one side of the valve seat and connected with the rotating shaft to drive the rotating shaft to rotate. Three flow channel holes are arranged on the valve seat in the circumferential direction. A through hole is arranged on the rotating disc and used for guiding the connection of two flow channel holes at most during the rotation of the rotating disc. The three-way valve can achieve the effect of cutting off the flow.

Description

Technical Field

[0001] This application relates to the field of valve technology, and more specifically, to a three-way valve. Background Technology

[0002] Three-way valves are a common fluid control component, widely used in HVAC, industrial automation and other fields. They achieve the switching control of fluid flow direction by changing the position of the valve core.

[0003] Existing three-way valves primarily employ a two-position three-way design, meaning the valve core has two operating positions, each corresponding to a different fluid flow path. This structure enables fluid diversion, meeting basic fluid control requirements. However, due to structural limitations, the two-position three-way valve cannot completely block the fluid flow when switching between the two operating positions, thus failing to achieve complete flow control. When the system requires complete fluid flow cutoff, the existing two-position three-way valve structure cannot meet this requirement, often necessitating the addition of a shut-off valve. This not only increases system complexity and cost but also impacts system reliability and maintenance convenience. Utility Model Content

[0004] The purpose of this application includes, for example, providing a three-way valve that can achieve the effect of shut-off.

[0005] The embodiments of this application can be implemented as follows: An embodiment of this application provides a three-way valve, which includes a valve seat, a rotating shaft, a turntable, and an actuator. The turntable is rotatably disposed within the valve seat. The rotating shaft passes through both the valve seat and the turntable and is coaxially connected to the turntable. The actuator is disposed on one side of the valve seat and connected to the rotating shaft to drive the rotating shaft to rotate. The valve seat has three flow channel holes along its circumference, and the turntable has a through hole, which is used to connect up to two of the flow channel holes during the rotation of the turntable.

[0006] Optionally, the three flow channels are designated as a first flow channel, a second flow channel, and a third flow channel. The first flow channel, the second flow channel, and the third flow channel are sequentially arranged along the circumference of the valve seat. The through hole is used to connect the first flow channel and the second flow channel when the turntable rotates to the first working position, to connect the second flow channel and the third flow channel when the turntable rotates to the second working position, and to connect only the second flow channel when the turntable rotates to the third working position.

[0007] Optionally, the valve seat is provided with a limiting part, and the limiting part is provided with a first abutting surface and a second abutting surface located on the same circumference. The turntable is provided with a first stop surface and a second stop surface located on the same circumference. The first stop surface is used to abut against the first abutting surface when the turntable rotates to the first working position, and the second stop surface is used to abut against the second abutting surface when the turntable rotates to the second working position.

[0008] Optionally, the valve seat includes a valve body and a valve cover, with a cavity for accommodating a turntable formed between the valve body and the valve cover. The rotating shaft passes through both the valve cover and the turntable. The actuator is located on the side of the valve cover away from the valve body. All three flow channel holes are opened on the surfaces of the valve body and the valve cover opposite to each other.

[0009] Optionally, the valve body and the valve cover are connected by at least two fasteners.

[0010] Optionally, the three-way valve further includes a sealing plate and a spring, both of which are disposed within the valve seat. The rotary disc is located between the spring and the sealing plate, and the rotary disc can be supported against the sealing plate under the action of the spring.

[0011] Optionally, the valve seat is provided with a limiting part, and a boss is provided on the limiting part extending radially outward along the rotation axis. The sealing sheet is provided with a first limiting groove, and the boss cooperates with the first limiting groove.

[0012] Optionally, the spring is a wave spring.

[0013] Optionally, at least one of the sealing sheet and the turntable is made of ceramic material.

[0014] Optionally, the rotating shaft is provided with a protruding rib, the turntable is provided with a central hole for the rotating shaft to pass through, and a second limiting groove is provided on the inner wall of the central hole, and the protruding rib cooperates with the second limiting groove.

[0015] The beneficial effects of the three-way valve provided in this application embodiment include, for example, in order to achieve the effect of flow interception, a three-way valve is designed, which includes a valve seat, a rotating shaft, a turntable and an actuator. The turntable is rotatably disposed in the valve seat, and the rotating shaft passes through both the valve seat and the turntable. The rotating shaft and the turntable are coaxially connected. The actuator is disposed on one side of the valve seat and connected to the rotating shaft to drive the rotating shaft to rotate. The valve seat is provided with three flow channel holes along the circumference, and the turntable is provided with a through hole, which is used to conduct up to two flow channel holes during the rotation of the turntable.

[0016] By providing three flow channel holes on the valve seat and limiting the through hole on the turntable to open at most two flow channel holes during the rotation of the turntable, the three-way valve can switch between the shut-off state and the open state. When the system needs to completely cut off the fluid flow, the three-way valve can meet this requirement without the need to install an additional shut-off valve to achieve the shut-off function. This not only reduces the system complexity and cost, but also improves the system reliability and maintenance convenience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the three-way valve in the embodiments of this application; Figure 2 This is an exploded view of the three-way valve in the embodiments of this application; Figure 3 This is a schematic diagram illustrating the turntable in its first working position in an embodiment of this application; Figure 4 This is a schematic diagram illustrating the turntable in the second working position in an embodiment of this application; Figure 5 This is a schematic diagram illustrating the turntable in the third working position in an embodiment of this application; Figure 6 This is a schematic diagram of the valve body in an embodiment of this application; Figure 7 for Figure 6 Enlarged view of section A; Figure 8 This is a schematic diagram of the turntable structure in an embodiment of this application; Figure 9 This is a schematic diagram illustrating the mating relationship between the sealing sheet and the valve body in an embodiment of this application; Figure 10 This is a schematic diagram illustrating the relationship between the rotating shaft and the turntable in an embodiment of this application.

[0019] Icons: 100-Valve seat; 110-Valve body; 111-First flow channel hole; 112-Second flow channel hole; 113-Third flow channel hole; 120-Valve cover; 130-Limiting part; 131-First abutting surface; 132-Second abutting surface; 133-Bearing; 134-Arc-shaped notch; 135-Boss; 140-Fastener; 200-Rotating shaft; 210-Raised ridge; 300-Turntable; 310-Through hole; 320-Limiting mating part; 321-First stop surface; 322-Second stop surface; 330-Center hole; 331-Second limiting groove; 400-Actuator; 500-Sealing plate; 510-First limiting groove; 600-Wave spring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] 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 to illustrate selected embodiments of the 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.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during 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, and therefore should not be construed as a limitation of this application.

[0024] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0025] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0026] Due to structural limitations of existing two-position three-way valves, their valve cores cannot completely block the fluid passage when switching between two operating positions, resulting in an inability to achieve complete flow control. When the system requires complete shut-off of fluid flow, the existing two-position three-way valve structure cannot meet this requirement, often necessitating the addition of an additional shut-off valve to achieve the flow control function. This not only increases system complexity and cost but also affects system reliability and ease of maintenance. Embodiments of this application provide a three-way valve that at least addresses the aforementioned technical problems.

[0027] Please refer to Figures 1-5 The three-way valve provided in the embodiments of this application includes a valve seat 100, a rotating shaft 200, a turntable 300, and an actuator 400. The turntable 300 is rotatably disposed within the valve seat 100. The rotating shaft 200 passes through both the valve seat 100 and the turntable 300 and is coaxially connected to the turntable 300. The actuator 400 is disposed on one side of the valve seat 100 and connected to the rotating shaft 200 to drive the rotating shaft 200 to rotate. The valve seat 100 is provided with three flow channel holes along the circumferential direction, and the turntable 300 is provided with a through hole 310. The through hole 310 is used to conduct up to two flow channel holes during the rotation of the turntable 300.

[0028] The valve seat 100 includes a valve body 110 and a valve cover 120. A cavity for accommodating a turntable 300 is formed between the valve body 110 and the valve cover 120. A rotating shaft 200 passes through both the valve cover 120 and the turntable 300. The rotating shaft 200 passes through the outside of the valve cover 120 into the cavity, and the rotating shaft 200 is coaxially connected with the turntable 300, so that the rotating shaft 200 and the turntable 300 are relatively fixed. The actuator 400 can be a driving component such as a motor. The actuator 400 is located on the outside of the valve cover 120 and is connected to the end of the rotating shaft 200 located outside the valve seat 100 to drive the rotating shaft 200 to rotate.

[0029] The valve body 110 is roughly cylindrical, with three flow passage holes arranged along the circumference of the valve body 110. The three flow passage holes are used to connect to different pipes respectively. The through hole 310 on the turntable 300 is arc-shaped. The through hole 310 can open one of the flow passage holes during the rotation of the turntable 300. At this time, the three-way valve is in the cut-off state, and the medium reaching the three-way valve cannot flow to the rear end. Alternatively, the through hole 310 can open two of the flow passage holes during the rotation of the turntable 300. At this time, the three-way valve is in the open state, and the medium reaching the three-way valve can flow to the rear end.

[0030] By limiting the through hole 310 on the turntable 300 to open up to two flow channels during the rotation of the turntable 300, the three-way valve can switch between the shut-off state and the open state. When the system needs to completely cut off the fluid flow, the three-way valve can meet this requirement without the need to install an additional shut-off valve to achieve the shut-off function. This not only reduces the system complexity and cost, but also improves the system reliability and maintenance convenience.

[0031] In this embodiment, all three flow channel holes are opened on the surfaces of the valve body 110 and the valve cover 120 opposite to each other.

[0032] With the through hole 310 on the turntable 300 connecting two of the flow channel holes, one flow channel hole is the inlet and the other flow channel hole is the outlet. By opening all three flow channel holes on the surfaces opposite to the valve body 110 and the valve cover 120, the inlet and outlet of the three-way valve are integrated on the same surface, resulting in a compact structure and facilitating system integration.

[0033] The three flow channel holes are a first flow channel hole 111, a second flow channel hole 112, and a third flow channel hole 113. The first flow channel hole 111, the second flow channel hole 112, and the third flow channel hole 113 are arranged sequentially along the circumference of the valve seat 100. The through hole 310 is used to open the first flow channel hole 111 and the second flow channel hole 112 when the turntable 300 rotates to the first working position, to open the second flow channel hole 112 and the third flow channel hole 113 when the turntable 300 rotates to the second working position, and to open only the second flow channel hole 112 when the turntable 300 rotates to the third working position.

[0034] The first flow channel hole 111, the second flow channel hole 112, and the third flow channel hole 113 are arranged sequentially along the circumference of the valve body 110. The second flow channel hole 112 is located between the first flow channel hole 111 and the third flow channel hole 113. The turntable 300 has a first working position, a second working position, and a third working position during rotation. When the turntable 300 is in the first working position, the through hole 310 connects the first flow channel hole 111 and the second flow channel hole 112, and the three-way valve is in the open state. When the turntable 300 is in the second working position, the through hole 310 connects the second flow channel hole 112 and the third flow channel hole 113, and the three-way valve is in the open state. When the turntable 300 is in the third working position, the through hole 310 only connects the second flow channel hole 112, and the three-way valve is in the shut-off state.

[0035] During the rotation of the turntable 300 from the first working position to the second working position or from the second working position to the first working position, it will pass through the third working position. Therefore, the three-way valve can quickly switch from the conducting state to the shut-off state to realize the function of shutting off the pipeline, and it can also quickly switch from the shut-off state to the conducting state to restore the function of conducting the pipeline.

[0036] Please refer to Figures 6-8In this embodiment, a limiting part 130 is provided inside the valve seat 100. The limiting part 130 is provided with a first abutting surface 131 and a second abutting surface 132 located on the same circumference. The turntable 300 is provided with a first stop surface 321 and a second stop surface 322 located on the same circumference. The first stop surface 321 is used to abut against the first abutting surface 131 when the turntable 300 rotates to the first working position, and the second stop surface 322 is used to abut against the second abutting surface 132 when the turntable 300 rotates to the second working position.

[0037] The limiting part 130 has a ring-shaped structure and a bearing 133 is provided inside. One end of the rotating shaft 200 is engaged with the bearing 133. The top end of the limiting part 130 is provided with an arc-shaped notch 134. The first abutting surface 131 and the second abutting surface 132 are two opposing surfaces of the limiting part 130 within the arc-shaped notch 134. The turntable 300 is provided with a limiting fitting part 320 on the side facing the limiting part 130. The limiting fitting part 320 is located within the arc-shaped notch 134 and is arc-shaped. The first stop surface 321 and the second stop surface 322 are two side surfaces of the limiting fitting part 320.

[0038] When the turntable 300 rotates from the first working position to the second working position, the second stop surface 322 abuts against the second abutting surface 132. When the turntable 300 rotates from the second working position to the first working position, the first stop surface 321 abuts against the first abutting surface 131. This allows the turntable 300 to be accurately positioned in the first or second working position to enable the three-way valve to operate. The positioning of the turntable 300 in the third working position can be achieved by the actuator 400 itself.

[0039] In this embodiment, the valve body 110 and the valve cover 120 are connected by at least two fasteners 140.

[0040] Fastener 140 can be a bolt. Fastener 140 can enable quick assembly and disassembly between valve body 110 and valve cover 120. By connecting valve body 110 and valve cover 120 with at least two fasteners 140, the connection between valve body 110 and valve cover 120 can be made more stable, and relative displacement between valve body 110 and valve cover 120 is not likely to occur.

[0041] For example, the valve cover 120 is provided with three fasteners 140 along its circumference. All three fasteners 140 pass through the valve cover 120 and engage with the threaded holes on the valve body 110, thereby achieving a stable connection between the valve body 110 and the valve cover 120. It is understood that the number of fasteners 140 can be determined according to actual needs and is not limited thereto.

[0042] In this embodiment, the three-way valve also includes a sealing plate 500 and a spring. Both the sealing plate 500 and the spring are disposed within the valve seat 100. The rotary table 300 is located between the spring and the sealing plate 500, and the rotary table 300 can be held against the sealing plate 500 under the action of the spring.

[0043] The sealing plate 500 also has three flow channel holes, which are connected to the three flow channel holes on the valve body 110 in a one-to-one correspondence. The sealing plate 500 and the spring are both disposed in the cavity formed by the valve body 110 and the valve cover 120. The turntable 300 has a first surface and a second surface opposite to each other along the axial direction of the rotation shaft 200. The spring acts on the first surface of the turntable 300, so that the second surface of the turntable 300 abuts against the sealing plate 500 to achieve a seal.

[0044] Please refer to Figure 9 In this embodiment, a boss 135 is provided on the limiting part 130 extending radially outward along the rotation axis 200, and a first limiting groove 510 is provided on the sealing sheet 500, with the boss 135 cooperating with the first limiting groove 510.

[0045] The sealing sheet 500 is sleeved on the limiting part 130. The first limiting groove 510 is disposed on the inner side of the sealing sheet 500 and cooperates with the boss 135 on the limiting part 130 so that the sealing sheet 500 is relatively fixed to the valve body 110, thereby ensuring that the flow channel hole on the sealing sheet 500 will not be misaligned with the flow channel hole on the valve body 110.

[0046] It is understandable that the number of bosses 135 and first limiting grooves 510 are matched. For example, there are four bosses 135 and four first limiting grooves 510, with each of the four bosses 135 cooperating with one of the four first limiting grooves 510.

[0047] In this embodiment, the spring is a wave spring 600.

[0048] It should be noted that the wave spring 600 has an undulating shape along the axial direction of the rotation shaft 200, with multiple high contact points and multiple low contact points. The multiple high contact points simultaneously abut against the inner wall of the valve cover 120, and the multiple low contact points simultaneously abut against the first surface of the turntable 300, thereby ensuring that the turntable 300 is always held against the sealing plate 500. Compared to ordinary helical springs, the wave spring 600 has more stable end-face positioning and is less prone to circumferential deformation.

[0049] In other embodiments, the spring may be of other types, as long as it can achieve a similar effect to the wave spring 600, and there is no limitation thereto.

[0050] In this embodiment, at least one of the sealing sheet 500 and the turntable 300 is made of ceramic material.

[0051] The fact that at least one of the sealing sheet 500 and the turntable 300 is made of ceramic material includes: the sealing sheet 500 is made of ceramic material, or the turntable 300 is made of ceramic material, or both the sealing sheet 500 and the turntable 300 are made of ceramic material.

[0052] Because ceramic materials have extremely high surface hardness, the surface roughness of parts can be made extremely low through grinding processes. Therefore, using ceramic materials to manufacture sealing sheet 500 or turntable 300, with turntable 300 supporting sealing sheet 500, can ensure good low internal leakage, low friction and high wear resistance, thereby reducing the output torque requirements of actuator 400 and improving product life.

[0053] Please refer to Figure 10 In this embodiment, the rotating shaft 200 is provided with a protruding rib 210, and the turntable 300 is provided with a central hole 330 for the rotating shaft 200 to pass through. A second limiting groove 331 is provided on the inner wall of the central hole 330, and the protruding rib 210 cooperates with the second limiting groove 331.

[0054] The protruding rib 210 is provided on the side of the rotating shaft 200 and extends along the axial direction of the rotating shaft 200. The second limiting groove 331 is opened along the axial direction of the central hole 330. When the protruding rib 210 and the second limiting groove 331 are engaged, the rotating shaft 200 and the turntable 300 are relatively fixed. When the rotating shaft 200 rotates, it can drive the turntable 300 to rotate synchronously.

[0055] It is understandable that the number of protrusions 210 and the number of second limiting grooves 331 are matched. For example, there are two protrusions 210 and two limiting grooves 331. The two protrusions 210 are arranged opposite to each other on the side of the rotating shaft 200, and the two protrusions 210 respectively cooperate with the two second limiting grooves 331.

[0056] In summary, the embodiments of this application provide a three-way valve, which includes a valve seat 100, a rotating shaft 200, a turntable 300, and an actuator 400. By limiting the through hole 310 on the turntable 300 to conduct up to two flow channels during the rotation of the turntable 300, the three-way valve can switch between a flow-blocking state and a flow-opening state. When the system needs to completely cut off the fluid flow, the three-way valve can meet this requirement without the need to install an additional shut-off valve to achieve the flow-blocking function. This not only reduces the system complexity and cost, but also improves the system reliability and maintenance convenience.

[0057] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A three-way valve, characterized in that, The device includes a valve seat (100), a rotating shaft (200), a turntable (300), and an actuator (400). The turntable (300) is rotatably disposed within the valve seat (100). The rotating shaft (200) passes through both the valve seat (100) and the turntable (300) and is coaxially connected to the turntable (300). The actuator (400) is disposed on one side of the valve seat (100) and connected to the rotating shaft (200) to drive the rotating shaft (200) to rotate. The valve seat (100) has three flow channel holes along the circumference, and the turntable (300) has a through hole (310) for guiding up to two of the flow channel holes during the rotation of the turntable (300).

2. The three-way valve according to claim 1, characterized in that, The three flow channels are a first flow channel (111), a second flow channel (112), and a third flow channel (113). The first flow channel (111), the second flow channel (112), and the third flow channel (113) are arranged sequentially along the circumference of the valve seat (100). The through hole (310) is used to open the first flow channel (111) and the second flow channel (112) when the turntable (300) rotates to the first working position. The through hole (310) is used to open the second flow channel (112) and the third flow channel (113) when the turntable (300) rotates to the second working position. The through hole (310) is used to open only the second flow channel (112) when the turntable (300) rotates to the third working position.

3. The three-way valve according to claim 2, characterized in that, The valve seat (100) is provided with a limiting part (130), and the limiting part (130) is provided with a first abutting surface (131) and a second abutting surface (132) located on the same circumference. The turntable (300) is provided with a first stop surface (321) and a second stop surface (322) located on the same circumference. The first stop surface (321) is used to abut against the first abutting surface (131) when the turntable (300) rotates to the first working position, and the second stop surface (322) is used to abut against the second abutting surface (132) when the turntable (300) rotates to the second working position.

4. The three-way valve according to claim 1, characterized in that, The valve seat (100) includes a valve body (110) and a valve cover (120). A cavity for accommodating a turntable (300) is formed between the valve body (110) and the valve cover (120). The rotating shaft (200) passes through both the valve cover (120) and the turntable (300). The actuator (400) is located on the side of the valve cover (120) away from the valve body (110). All three flow channel holes are opened on the surfaces of the valve body (110) and the valve cover (120) opposite to each other.

5. The three-way valve according to claim 4, characterized in that, The valve body (110) and the valve cover (120) are connected by at least two fasteners (140).

6. The three-way valve according to claim 1, characterized in that, The three-way valve also includes a sealing plate (500) and a spring. The sealing plate (500) and the spring are both disposed in the valve seat (100). The turntable (300) is located between the spring and the sealing plate (500). The turntable (300) can abut against the sealing plate (500) under the action of the spring.

7. The three-way valve according to claim 6, characterized in that, The valve seat (100) is provided with a limiting part (130), and a boss (135) is provided on the limiting part (130) extending radially outward along the rotating shaft (200). The sealing sheet (500) is provided with a first limiting groove (510), and the boss (135) cooperates with the first limiting groove (510).

8. The three-way valve according to claim 6, characterized in that, The spring is a wave spring (600).

9. The three-way valve according to claim 6, characterized in that, At least one of the sealing sheet (500) and the turntable (300) is made of ceramic material.

10. The three-way valve according to claim 1, characterized in that, The rotating shaft (200) is provided with a protruding rib (210), and the turntable (300) is provided with a central hole (330) through which the rotating shaft (200) passes. A second limiting groove (331) is provided on the inner wall of the central hole (330), and the protruding rib (210) cooperates with the second limiting groove (331).

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