A three-way plug valve

Abstract

This utility model relates to the field of three-way plug valve technology and discloses a three-way plug valve, including a three-way valve body and a connecting plate. The connecting plate is disposed above the three-way valve body, and multiple mounting bolts are threadedly connected to the connection between the connecting plate and the three-way valve body. A drive shaft is rotatably connected inside the connecting plate, and the shaft of the drive shaft extends into the interior of the three-way valve body. A valve core is rotatably disposed inside the three-way valve body, and the top end of the valve core is fixedly connected to the bottom end of the drive shaft. When the drive shaft is rotated to switch the passage, the pressure plate rotates with the drive shaft. When the right-angle hole of the valve core aligns with the target passage, the pressure plate contacts one of the pressure sensors and applies pressure. The pressure sensor transmits the pressure signal to the controller through a wire. The controller can feed back the signal to an external control system, realizing accurate detection and feedback of the valve core switching position, ensuring accurate passage switching.

Description

Technical Field

[0001] This utility model relates to the field of three-way plug valve technology, and in particular to a three-way plug valve. Background Technology

[0002] A three-way plug valve is a type of valve that controls the switching of fluid paths by rotating the valve core. Its core feature is that it can connect, disconnect, or reverse three pipelines. It is widely used in industrial fields such as petroleum, chemical, water treatment, and metallurgy. With its compact structure, flexible switching, and strong flow capacity, the three-way plug valve has irreplaceable advantages in scenarios that require rapid reversal, diversion, or merging of three pipelines.

[0003] In the existing technology, the use of three-way plug valves requires more precise adjustment of the valve core inside the valve body to prevent fluid leakage due to the multiple flow ports. However, the valve core is located inside the three-way plug valve, making it difficult to accurately observe its position after rotation, which affects the stability and performance of the three-way plug valve during use. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that, due to the presence of multiple flow ports in a three-way plug valve, more precise adjustment of the valve core inside the valve body is required to prevent fluid leakage. However, the valve core is located inside the three-way plug valve, making it difficult to accurately observe its position after rotation, which affects the stability and performance of the three-way plug valve during use. Therefore, this invention proposes a three-way plug valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A three-way plug valve includes a three-way valve body and a connecting plate. The connecting plate is disposed above the three-way valve body. Multiple mounting bolts are threadedly connected to the connection between the connecting plate and the three-way valve body. A drive shaft is rotatably connected inside the connecting plate. The shaft of the drive shaft extends into the interior of the three-way valve body. A valve core is rotatably disposed inside the three-way valve body. The top end of the valve core is fixedly connected to the bottom end of the drive shaft. A right-angle hole is formed inside the valve core. A housing is fixedly connected to the upper surface of the connecting plate. The housing is sleeved on the outside of the drive shaft. A controller and two pressure sensors are disposed inside the housing. A pressure plate is fixedly connected to the shaft wall of the drive shaft inside the housing. The pressure plate is in contact with one of the pressure sensors.

[0007] Preferably, the three-way valve body has threaded mounting rings at the ends of the multiple ports.

[0008] Preferably, the drive shaft located above the connecting plate has a hexagonal face, and the valve core located on the inner wall of the right-angle hole has a rounded corner.

[0009] Preferably, a wire is electrically connected to the side wall of the controller, and the end of the wire away from the controller is electrically connected to the pressure sensor.

[0010] Preferably, a guide ring is fixedly connected to the bottom of the valve core, and an annular groove is provided inside the three-way valve body, with the guide ring slidably disposed on the inner wall of the annular groove.

[0011] Preferably, the inner wall of the guide ring is provided with a plurality of spherical grooves, and the guide ring is provided with rolling balls on the inner wall of the plurality of spherical grooves, and the plurality of rolling balls are respectively provided on the inner wall of the annular groove.

[0012] Compared with the prior art, this utility model provides a three-way plug valve, which has the following advantages:

[0013] 1. This three-way plug valve works by rotating the drive shaft to switch the passage. When the drive shaft rotates to switch the passage, the pressure plate rotates with the drive shaft. When the right-angle hole of the valve core is aligned with the target passage, the pressure plate contacts one of the pressure sensors and applies pressure. The pressure sensor transmits the pressure signal to the controller through a wire. The controller can feed the signal back to the external control system to achieve accurate detection and feedback of the valve core switching position, ensuring that the passage switching is accurate and in place.

[0014] 2. When the drive shaft is rotated, the valve core rotates synchronously inside the three-way valve body. The right-angle hole inside the valve core can be aligned with different ports of the three-way valve body by rotation, so as to switch the fluid passage, connect two ports and close the third port. The rounded corner of the inner wall of the right-angle hole of the valve core can reduce fluid resistance, avoid the accumulation of impurities in dead corners, and reduce the scouring and wear of the valve core by the fluid.

[0015] 3. This three-way plug valve uses a guide ring at the bottom of the valve core to slide within an annular groove inside the three-way valve body, providing guidance for the rotation of the valve core and ensuring the alignment accuracy of the right-angle hole and the through port. Multiple balls on the inner wall of the guide ring roll within the annular groove, reducing the frictional resistance between the guide ring and the groove, making the valve core rotate more smoothly and reducing the operating torque. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a three-way plug valve proposed in this utility model;

[0017] Figure 2 This is a partial structural cross-sectional view of a three-way plug valve proposed in this utility model;

[0018] Figure 3 This is a top-view partial sectional view of a three-way plug valve proposed in this utility model.

[0019] In the diagram: 1 Three-way valve body, 2 Connecting plate, 3 Mounting bolt, 4 Threaded mounting ring, 5 Drive shaft, 6 Valve core, 7 Rounded corner, 8 Housing, 9 Controller, 10 Pressure sensor, 11 Wire, 12 Pressure plate, 13 Guide ring, 14 Ball bearing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3 A three-way plug valve includes a three-way valve body 1 and a connecting plate 2. The connecting plate 2 is disposed above the three-way valve body 1. Multiple mounting bolts 3 are threadedly connected to the connection between the connecting plate 2 and the three-way valve body 1. A drive shaft 5 is rotatably connected inside the connecting plate 2. The shaft of the drive shaft 5 extends into the interior of the three-way valve body 1. A valve core 6 is rotatably disposed inside the three-way valve body 1. The top end of the valve core 6 is fixedly connected to the bottom end of the drive shaft 5. A right-angle hole is opened inside the valve core 6. A housing 8 is fixedly connected to the upper surface of the connecting plate 2. The housing 8 is sleeved on the outside of the drive shaft 5. A controller 9 and two pressure sensors 10 are disposed inside the housing 8. A pressure plate 12 is fixedly connected to the shaft wall of the drive shaft 5 inside the housing 8. The pressure plate 12 is in contact with one of the pressure sensors 10.

[0022] The three-way valve body 1 has a threaded mounting ring 4 at the end of multiple ports. The drive shaft 5 has a hexagonal face on the shaft above the connecting plate 2. The valve core 6 has a rounded corner 7 on the inner wall of the right-angle hole. The controller 9 has a wire 11 electrically connected to its side wall. The end of the wire 11 away from the controller 9 is electrically connected to the pressure sensor 10.

[0023] The three-way valve body 1 serves as the main channel for fluid flow. The threaded mounting rings 4 at the ends of its multiple ports are used to connect with external pipelines. The threaded seals achieve a stable and sealed connection. The connecting plate 2 is fixed above the three-way valve body 1 by multiple mounting bolts 3, forming the mounting base for the valve core drive structure and ensuring the sealing and stability of the overall structure.

[0024] The drive shaft 5, which is rotatably connected inside the connecting plate 2, is the core component for valve core control. The shaft located above the connecting plate 2 has a hexagonal face. The drive shaft 5 can be rotated using tools such as a wrench. The bottom of the drive shaft 5 is fixedly connected to the valve core 6. When the drive shaft 5 is rotated, the valve core 6 rotates synchronously inside the three-way valve body 1. The right-angle hole inside the valve core 6 can be aligned with different ports of the three-way valve body 1 by rotation, so as to switch the fluid passage, connect two ports, and close the third port. The rounded corner 7 of the inner wall of the right-angle hole of the valve core 6 can reduce fluid resistance, avoid the accumulation of impurities in dead corners, and reduce the scouring and wear of the valve core by the fluid.

[0025] Inside the housing 8 on the upper surface of the connecting plate 2, there is a controller 9 and two pressure sensors 10. The drive shaft 5 is fixed to the shaft wall inside the housing 8 with a pressure plate 12. When the drive shaft 5 is rotated to switch the passage, the pressure plate 12 rotates with the drive shaft 5. When the right-angle hole of the valve core 6 is aligned with the target port, the pressure plate 12 contacts one of the pressure sensors 10 and applies pressure. The pressure sensor 10 transmits the pressure signal to the controller 9 through the wire 11. The controller 9 can feed the signal back to the external control system to realize the accurate detection and feedback of the valve core switching position, ensure that the passage switching is accurate and in place, and avoid fluid leakage or passage errors caused by over-operation or under-operation.

[0026] In order to provide guidance for the rotation of valve core 6, such as Figure 1-3 As shown, a guide ring 13 is fixedly connected to the bottom of the valve core 6. An annular groove is provided inside the three-way valve body 1. The guide ring 13 is slidably disposed on the inner wall of the annular groove. Multiple spherical grooves are provided on the inner wall of the guide ring 13. Rolling balls 14 are respectively rolled on the inner wall of the multiple spherical grooves of the guide ring 13. Multiple rolling balls 14 are respectively rolled on the inner wall of the annular groove.

[0027] The guide ring 13 at the bottom of the valve core 6 slides in the annular groove inside the three-way valve body 1, providing guidance for the rotation of the valve core 6 and ensuring the alignment accuracy of the right-angle hole and the through port. Multiple balls 14 on the inner wall of the guide ring 13 roll in the annular groove, reducing the frictional resistance between the guide ring 13 and the groove, making the valve core rotate more smoothly and reducing the operating torque.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A three-way cock valve comprising a three-way valve body (1) and a connecting plate (2), characterized in that: The connecting plate (2) is located above the three-way valve body (1). Multiple mounting bolts (3) are threadedly connected to the connection between the connecting plate (2) and the three-way valve body (1). A drive shaft (5) is rotatably connected inside the connecting plate (2). The shaft of the drive shaft (5) extends into the interior of the three-way valve body (1). A valve core (6) is rotatably provided inside the three-way valve body (1). The top of the valve core (6) is fixedly connected to the bottom of the drive shaft (5). A right-angle hole is opened inside the valve core (6). A box body (8) is fixedly connected to the upper surface of the connecting plate (2). The box body (8) is sleeved on the outside of the drive shaft (5). A controller (9) and two pressure sensors (10) are provided inside the box body (8). A pressure plate (12) is fixedly connected to the shaft wall inside the box body (8). The pressure plate (12) is in contact with one of the pressure sensors (10).

2. A three-way stopcock valve according to claim 1, wherein: The three-way valve body (1) is provided with threaded mounting rings (4) at the ends of the multiple ports.

3. A three-way stopcock valve according to claim 1, wherein: The drive shaft (5) located above the connecting plate (2) has a hexagonal surface, and the valve core (6) has a rounded corner (7) on the inner wall of the right-angle hole.

4. A three-way stopcock valve according to claim 1, wherein: A wire (11) is electrically connected to the side wall of the controller (9), and the end of the wire (11) away from the controller (9) is electrically connected to the pressure sensor (10).

5. A three-way plug valve according to claim 1, characterized in that: The bottom of the valve core (6) is fixedly connected to a guide ring (13), and the interior of the three-way valve body (1) is provided with an annular groove. The guide ring (13) is slidably disposed on the inner wall of the annular groove.

6. A three-way stopcock valve according to claim 5, wherein: The inner wall of the guide ring (13) is provided with a plurality of spherical grooves, and the guide ring (13) is provided with rolling balls (14) on the inner wall of the plurality of spherical grooves respectively, and the plurality of rolling balls (14) are respectively rolled on the inner wall of the annular groove.

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