Three-way valve

Abstract

The utility model relates to the technical field of valves, and discloses a three-way valve which comprises a three-way pipe and a valve assembly, the three-way pipe comprises a main pipe, a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are respectively communicated with the main pipe, and the valve assembly is arranged on the first branch pipe and the second branch pipe. The valve assembly can control opening and closing of the first branch pipe and / or the second branch pipe at the same time. According to the control device, the single valve assembly is arranged, opening and closing of the first branch pipe and the second branch pipe can be controlled at the same time, multiple power execution elements are not needed, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a three-way valve. Background Art

[0002] The three-way valve body has three ports, one inlet and two outlets. Unlike ordinary valves, there is an outlet at the bottom. When the internal valve core is in different positions, the outlets are different. For example, when the valve core is at the bottom, the left and right ports are connected. When the valve core is at the top, the right outlet is blocked, and the left and bottom ports are connected.

[0003] The two outlets of the existing three-way valve are respectively provided with a power actuator for controlling the position of the valve core, which not only has a high manufacturing cost, but also is very troublesome to install and debug. Utility Model Content

[0004] The purpose of the utility model is to provide a three-way valve to solve the problem that multiple execution units need to be arranged in the prior art to control two outlets.

[0005] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0006] A three-way valve comprises a three-way pipe and a valve assembly, wherein the three-way pipe comprises a main pipe and a first branch pipe and a second branch pipe respectively connected to the main pipe, the valve assembly is arranged on the first branch pipe and the second branch pipe, the valve assembly comprises a first valve ball rotatably arranged in the first branch pipe, a second valve ball rotatably arranged in the second branch pipe and a driving mechanism, and the driving mechanism can drive the first valve ball and the second valve ball to rotate simultaneously.

[0007] In the present application, a single driving mechanism is provided to simultaneously control the rotation of the valve balls in the first branch pipe and the second branch pipe, without requiring multiple power actuators, thereby reducing manufacturing costs.

[0008] Further preferably, a rotating column is disposed on each of the first valve ball and the second valve ball, and a free end of the rotating column passes through the three-way pipe and is then installed on the driving mechanism.

[0009] In the present application, a rotating column is provided to drive the first valve ball or the second valve ball to rotate, and the opening and closing of the branch pipe is controlled through the connecting hole on the valve ball. The branch pipe and the main pipe can be connected by rotating the valve ball.

[0010] Further preferably, the driving mechanism includes a transmission part and a power part, the transmission part includes a first gear, a second gear, a first rack, a second rack and a mounting platform, the first gear and the second gear are respectively arranged at the free ends of the two rotating columns, the first rack and the second rack are respectively meshed with the first gear and the second gear, a limiting ring for limiting the sliding direction of the first rack and the second rack is provided on the mounting platform, and the power part is used to drive the first rack and the second rack to slide.

[0011] In the present application, the gear rack structure can simultaneously drive the first valve ball and the second valve ball to rotate, thereby controlling the opening and closing of the two branch pipes at the same time, with a simple structure and strong practicality.

[0012] Further preferably, the power unit includes three groups of drive rods and a hydraulic mechanism, the hydraulic mechanism is arranged on the mounting platform, and each of the three groups of drive rods has a hinged end, wherein the free ends of two groups of the drive rods are respectively hinged to the first rack and the second rack, and the free end of the other group of the drive rods is transmission connected to the hydraulic mechanism.

[0013] In the present application, the first rack and the second rack can be driven to slide at the same time by the driving rod and the hydraulic mechanism, thereby driving the valve ball to rotate, thereby achieving the purpose of simultaneously controlling the opening and closing of the branch pipes.

[0014] Further preferably, both the first rack and the second rack are detachably connected to the driving rod.

[0015] In the present application, the first rack and the second rack are detachably connected to the driving rod, so that the opening and closing of a branch pipe can be controlled separately according to the purpose of use.

[0016] Further preferably, the number of the limiting rings for limiting the sliding direction of the first rack is at least 2.

[0017] In the present application, in order to ensure that the rack is always engaged with the gear during the sliding process, each gear is provided with two sets of limit rings to limit the sliding direction of the rack, thereby ensuring that the power unit can control the valve ball.

[0018] Further preferably, the power unit further comprises a bracket, the bracket is fixed on the mounting platform, and the bracket is provided with a groove for the driving rod to pass through.

[0019] In the present application, a bracket is provided to limit the sliding direction of the three driving rods, and can also prevent external debris from falling onto the connection between the three driving rods and causing hinge jamming.

[0020] The utility model adopting the above technical solution has the following advantages:

[0021] 1. In the present application, a single valve assembly is provided to simultaneously control the opening and closing of the first branch pipe and the second branch pipe, without requiring multiple power actuators, thereby reducing manufacturing costs.

[0022] 2. In the present application, a driving mechanism is provided to drive the first valve ball or the second valve ball to rotate, and the opening and closing of the branch pipe is controlled through the connecting hole on the valve ball. The branch pipe and the main pipe can be connected by rotating the valve ball.

[0023] 3. In the present application, the gear rack structure can simultaneously drive the first valve ball and the second valve ball to rotate, thereby controlling the opening and closing of the two branch pipes at the same time, with a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0025] Figure 1 It is a schematic diagram of the overall structure of the three-way valve of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the valve ball of the three-way valve of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the bracket of the three-way valve of the utility model;

[0028] The main component symbols are described as follows:

[0029] 10. Tee pipe; 11. Main pipe; 12. First branch pipe; 13. Second branch pipe;

[0030] 20. Valve assembly; 21. First valve ball; 22. Second valve ball; 23. Communication hole; 24. Rotating column; 251. First gear; 252. Second gear; 26. First rack; 27. Second rack; 28. Mounting platform; 29. ​​Limiting ring;

[0031] 30. Driving rod; 31. Hydraulic mechanism; 32. Bracket; 33. Groove. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or in the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0033] like Figures 1 to 3As shown, the three-way valve of the utility model comprises a three-way pipe 10 and a valve assembly 20. The three-way pipe 10 comprises a main pipe 11 and a first branch pipe 12 and a second branch pipe 13 respectively connected to the main pipe 11. Generally, the main pipe 11 is a fluid inlet pipe, and the first branch pipe 12 and the second branch pipe 13 are used to output the fluid. The valve assembly 20 is arranged on the first branch pipe 12 and the second branch pipe 13. The valve assembly 20 can control the opening and closing of the first branch pipe 12 and / or the second branch pipe 13 at the same time.

[0034] Specifically, the valve assembly 20 includes a first valve ball 21 rotatably disposed in the first branch pipe 12, and a second valve ball 22 rotatably disposed in the second branch pipe 13. The first valve ball 21 can isolate the first branch pipe 12. The first valve ball 21 and the second valve ball 22 are both provided with connecting holes 23 along the fluid transport direction. The first valve ball 21 and the second valve ball 22 are both provided with rotating columns 24. The free end of the rotating column 24 passes through the three-way pipe 10 and is connected to a driving mechanism disposed outside the three-way pipe 10. The driving mechanism can drive the rotating columns 24 on the first valve ball 21 and the second valve ball 22 to rotate, so that the connecting holes 23 connect the branches or the valve balls isolate the branches. For related content, please refer to the ball valve in the prior art, which will not be described in detail here.

[0035] The driving mechanism includes a transmission part and a power part. The transmission part includes a first gear 251, a second gear 252, a first rack 26, a second rack 27 and a mounting platform 28. The first gear 251 and the second gear 252 are respectively fixed to the free ends of the two rotating columns 24. The first rack 26 and the second rack 27 are respectively meshed with the first gear 251 and the second gear 252. A limiting ring 29 for limiting the sliding direction of the first rack 26 and the second rack 27 is provided on the mounting platform 28. The limiting ring 29 can limit the sliding direction of the rack so that the rack can always mesh with the gear. Preferably, each rack is provided with two sets of limiting rings 29 for limiting.

[0036] The power unit is used to drive the first rack 26 and the second rack 27 to slide. The power unit includes three groups of drive rods 30 and a hydraulic mechanism 31. The hydraulic mechanism is arranged on the mounting platform 28. One end of each of the three groups of drive rods 30 is hinged together. The free ends of two groups of drive rods 30 are respectively hinged to the first rack 26 and the second rack 27. The free end of the other group of drive rods 30 is transmission-connected to the hydraulic mechanism 31. The hydraulic mechanism 31 drives the first rack 26 and the second rack 27 to slide by driving the drive rods 30 to extend and retract. In the present application, a hydraulic rod is used to drive the rack and the gear to drive the two valve balls to rotate. In actual use, a motor can also be set to drive the two groups of gears to rotate to control the rotation of the valve balls. The hydraulic rod used in the present application has a simple structure and is easy to adjust.

[0037] Preferably, the first rack 26 and the second rack 27 are both detachably connected to the driving rod 30. In this way, a branch pipe can be controlled separately according to needs.

[0038] The power unit also includes a bracket 32. The bracket 32 ​​is fixed on the mounting platform 28. A slot 33 is provided on the bracket 32 ​​for the drive rod 30 to pass through. The bracket 32 ​​can protect the three sets of drive rods to prevent the occurrence of articulation and jamming.

[0039] When in use, the hydraulic mechanism drives the drive rod 30 to extend and retract, and the drive rod 30 drives the first rack 26 and the second rack 27 to slide, thereby driving the first valve ball 21 and the second valve ball 22 to rotate, thereby controlling the opening and closing of the first branch pipe 12 and the second branch pipe 13.

[0040] The three-way valve provided by the utility model is introduced in detail above. The description of the specific embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A three-way valve, characterized in that: The invention comprises a three-way pipe (10) and a valve assembly (20), wherein the three-way pipe (10) comprises a main pipe (11) and a first branch pipe (12) and a second branch pipe (13) respectively connected to the main pipe (11), wherein the valve assembly (20) is arranged on the first branch pipe (12) and the second branch pipe (13), wherein the valve assembly (20) comprises a first valve ball (21) rotatably arranged in the first branch pipe (12), a second valve ball (22) rotatably arranged in the second branch pipe (13), and a driving mechanism, wherein the driving mechanism can simultaneously drive the first valve ball (21) and the second valve ball (22) to rotate.

2. The three-way valve according to claim 1, characterized in that: The first valve ball (21) and the second valve ball (22) are both provided with a rotating column (24), and the free end of the rotating column (24) passes through the three-way pipe (10) and is then installed on the driving mechanism.

3. The three-way valve according to claim 2, characterized in that: The driving mechanism comprises a transmission part and a power part, the transmission part comprises a first gear (251), a second gear (252), a first rack (26), a second rack (27) and a mounting platform (28), the first gear (251) and the second gear (252) are respectively arranged at the free ends of the two rotating columns (24), the first rack (26) and the second rack (27) are respectively meshed with the first gear (251) and the second gear (252), the mounting platform (28) is provided with a limiting ring (29) for limiting the sliding direction of the first rack (26) and the second rack (27), and the power part is used to drive the first rack (26) and the second rack (27) to slide.

4. The three-way valve according to claim 3, characterized in that: The power unit comprises three groups of drive rods (30) and a hydraulic mechanism (31). The hydraulic mechanism (31) is arranged on the mounting platform (28). Each of the three groups of drive rods (30) has one end hinged at a point, wherein the free ends of two groups of the drive rods (30) are respectively hinged to the first rack (26) and the second rack (27), and the free end of the other group of the drive rods (30) is transmission-connected to the hydraulic mechanism (31).

5. The three-way valve according to claim 4, characterized in that: The first rack (26) and the second rack (27) are both detachably connected to the drive rod (30).

6. The three-way valve according to claim 5, characterized in that: The number of the limiting rings (29) used to limit the sliding direction of the first rack (26) is at least two.

7. The three-way valve according to claim 4, characterized in that: The power unit also includes a bracket (32), the bracket (32) is fixed on the mounting platform (28), and the bracket (32) is provided with a groove (33) for the driving rod (30) to pass through.

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