Pressure reducing tee valve

Abstract

The utility model discloses a kind of pressure reducing tee valves, including tee body, the tee body includes pressure reducing liquid inlet, first liquid outlet and second liquid outlet;Pressure reducing structure is arranged at the input end of the pressure reducing liquid inlet of the tee body, after liquid pressure is reduced by the pressure reducing structure, shunt to the position of the first liquid outlet and the second liquid outlet.This utility model is integrated by setting pressure reducing structure in tee valve body inside, when liquid enters from pressure reducing liquid inlet, first via the pressure relief valve core, pressure relief spring and the buffering pressure reducing mechanism of pressure relief valve water inlet component composition Effective pressure regulation, realize the buffering of instantaneous high pressure and shunt, to significantly reduce the direct impact of high pressure liquid to downstream equipment, avoid equipment damage, interface water leakage or sealing failure and other problems caused by sudden water pressure too high.

Description

Technical Field

[0001] This utility model relates to a three-way valve, specifically a pressure-reducing three-way valve. Background Technology

[0002] A three-way valve is a common connection and control component used in liquid delivery pipelines. It has one inlet and two outlets, enabling liquid diversion, guidance, and control. It is widely used in building water supply and drainage systems, industrial hydraulic control, and household appliance connections. In existing technologies, traditional three-way valves have a relatively simple structure, typically only providing liquid on / off and diversion functions, lacking effective means of regulating inlet pressure, and unable to cope with sudden changes in inlet water pressure.

[0003] In many practical applications, the water supply pressure in liquid pipeline networks may fluctuate drastically, especially during peak water usage times in the morning and evening or at the initial stage of water supply restoration. Instantaneous water pressure can easily rise, even exceeding the rated pressure that downstream equipment can withstand, causing problems such as damage to internal components, leakage at interfaces, and failure of seals. Existing three-way valves do not have effective pressure-reducing capabilities and are prone to irreversible damage from external high-pressure impacts when equipment stops operating.

[0004] Some existing technologies attempt to alleviate pressure by adding a pressure-reducing valve assembly to the external pipeline of the three-way valve. However, this structure is not only complex to install and costly, but also has insufficient pressure reduction response and a delay problem, making it impossible to achieve a rapid response to instantaneous high pressure.

[0005] Therefore, there is an urgent need to provide a three-way valve structure that is compact, has efficient pressure reduction capabilities, and can prevent sudden high pressure from impacting and damaging downstream equipment, so as to improve the safety and reliability of the system. Summary of the Invention

[0006] To address the aforementioned problems, this utility model provides a pressure-reducing three-way valve, which effectively overcomes the shortcomings of the prior art by integrating a pressure-reducing mechanism within the three-way valve.

[0007] This utility model is achieved through the following technical solution: a pressure-reducing three-way valve, comprising:

[0008] The three-way body includes a pressure-reducing inlet, a first outlet, and a second outlet;

[0009] A pressure-reducing structure is installed at the input end of the pressure-reducing inlet of the three-way body. After the liquid pressure is reduced by the pressure-reducing structure, the liquid is diverted to the first outlet and the second outlet.

[0010] As a preferred technical solution, the pressure-reducing structure includes:

[0011] A pressure reducing valve core, which is sealed and assembled with the three-way body;

[0012] The pressure reducing valve inlet is located on one side of the pressure reducing inlet of the three-way body. The pressure reducing valve inlet is slidably sealed to the three-way body. A back pressure screw is threaded on the inlet end of the pressure reducing valve inlet.

[0013] A pressure-reducing spring is disposed between the pressure-reducing valve core and the pressure-reducing valve inlet, and the pressure-reducing valve inlet can perform a buffered extension and retraction action relative to the pressure-reducing valve core.

[0014] As a preferred technical solution, the pressure reducing valve core is provided with one or more first diversion ports around the pressure reducing valve core, and the liquid enters into the second outlet through the first diversion port;

[0015] The three-way body is also provided with one or more second diversion ports, through which the liquid enters the first outlet port.

[0016] As a preferred technical solution, the pressure reducing valve inlet has a pressure reducing inlet and a pressure reducing outlet, wherein the diameter of the pressure reducing inlet is larger than that of the pressure reducing outlet.

[0017] As a preferred technical solution, an O-ring piston seal is provided between the pressure-reducing inlet component and the pressure-reducing valve core, and the O-ring piston seal moves back and forth with the pressure-reducing valve inlet component.

[0018] As a preferred technical solution, the three-way body is equipped with a hand-tight switch mechanism at the second liquid outlet.

[0019] As a preferred technical solution, the hand-tightening switch mechanism includes a switch ball, a large ball valve sealing plate is provided on the top of the switch ball, a small ball valve sealing plate is provided on the bottom of the switch ball, and a spherical cavity is provided between the large ball valve sealing plate and the small ball valve sealing plate. The switch ball is disposed in the spherical cavity between the large ball valve sealing plate and the small ball valve sealing plate, and a through drainage channel is provided in the middle of the switch ball.

[0020] It also includes a handle drive shaft, the head of which is provided with a locking part, and the switch ball is provided with a locking groove. The locking part is locked into the locking groove. A switch handle is provided on the outside of the handle drive shaft. The drainage channel is opened or closed by rotating the switch handle.

[0021] As a preferred technical solution, the output end of the switch ball is provided with a two-way pipe interface at the position of the second liquid outlet. The two-way pipe interface is threadedly connected to the three-way body, and the small sealing piece of the ball valve is embedded in the two-way pipe interface.

[0022] As a preferred technical solution, a two-point nut is installed on the external thread of the two-point pipe interface.

[0023] As a preferred technical solution, an M20 nut is provided at the pressure-reducing inlet position of the three-way body.

[0024] The beneficial effects of this utility model are as follows: By integrating a pressure-reducing structure inside the three-way valve body, this utility model can effectively regulate the pressure of liquid entering from the pressure-reducing inlet by first passing through a buffer pressure-reducing mechanism composed of a pressure-reducing valve core, a pressure-reducing spring, and a pressure-reducing valve inlet component. This achieves buffering and diversion of instantaneous high pressure, thereby significantly reducing the direct impact of high-pressure liquid on downstream equipment and avoiding problems such as equipment damage, interface leakage, or seal failure caused by sudden excessive water pressure. Especially when the end equipment is not turned on, it can still effectively block the high-pressure impact path and ensure the overall safety of the system.

[0025] In addition, this utility model also provides a hand-tight switch mechanism with drainage control function at the second outlet of the three-way valve. The opening and closing control of the drainage channel is realized by driving the switch ball through the hand-tightening transmission shaft, which further improves the convenience and controllability of the system in terms of liquid flow control and maintenance operation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0028] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0029] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0030] Explanation of reference numerals in the attached figures:

[0031] 3. Three-way body; 32. Pressure reducing inlet; 34. First outlet; 33. Second outlet; 8. Pressure reducing valve core; 4. Pressure reducing valve inlet; 2. Back pressure screw; 5. Pressure reducing spring; 81. First branch port; 31. Second branch port; 7. Switch ball; 6. Large ball valve seal; 10. Small ball valve seal; 13. Tightening handle drive shaft; 9. Snap-in groove; 14. Switch handle; 12. Two-way pipe interface; 11. Two-way nut; 1. M20 nut. Detailed Implementation

[0032] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0033] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0034] like Figures 1-3 As shown, the specific structure and working method of the pressure reducing three-way valve of this utility model are as follows:

[0035] The pressure-reducing three-way valve includes an integrally formed three-way body 3, which has a "T" or "Y" shaped pipe structure. It has a pressure-reducing inlet 32 ​​for liquid entry and two outlets, a first outlet 34 and a second outlet 33, for liquid exit. The entire three-way body 3 has an internal connecting channel, and through structural optimization, it achieves effective liquid diversion and guidance.

[0036] To prevent high-pressure liquid from directly acting on the outlet equipment, a pressure-reducing structure is integrated at the input end of the pressure-reducing inlet 32 ​​of the three-way body 3. The core of this pressure-reducing structure includes a pressure-reducing valve core 8, a pressure-reducing valve inlet 4, a pressure-reducing spring 5, and a sealing assembly. The pressure-reducing valve core 8 is fixedly installed inside the three-way body 3, forming a first pressure-isolation assembly through a sealing fit with the three-way body 3 to prevent liquid shunting. The pressure-reducing valve inlet 4 is axially slidably mounted inside the pressure-reducing inlet 32 ​​of the three-way body 3, with a sliding sealing fit between the inlet and the three-way body 3 to achieve buffering action under pressure. To adjust the initial stress state of the inlet, a counter-pressure screw 2 is threaded at the inlet end of the inlet, and the preload can be adjusted by rotation.

[0037] The pressure reducing spring 5 is located between the pressure reducing valve core 8 and the pressure reducing valve inlet 4. When subjected to liquid impact, the pressure reducing valve inlet 4 will drive the O-ring piston seal to perform buffering extension and retraction relative to the pressure reducing valve core 8 in the axial direction, thereby gradually slowing down the high-pressure liquid when passing through the pressure reducing structure and avoiding direct impact of instantaneous pressure on the equipment.

[0038] The outer wall of the pressure reducing valve core 8 is surrounded by multiple first diversion ports 81. After pressure reduction, the liquid can flow into the interior of the three-way body 3 through the first diversion ports 81 and finally enter the second outlet 33. The interior of the three-way body 3 also has one or more second diversion ports 31 connected to the first outlet 34. The liquid achieves uniform flow through these second diversion ports 31, so that after pressure reduction, the liquid can be simultaneously diverted to two outlets in different directions, improving the flexibility and efficiency of use.

[0039] To achieve further flow control, the pressure reducing valve inlet component 4 is designed with a pressure reducing inlet and a pressure reducing outlet connected to it. The diameter of the pressure reducing inlet is larger than that of the pressure reducing outlet, which further creates a throttling effect through the difference in orifice diameter, achieving a two-stage pressure buffer. An O-ring piston seal is also installed between the pressure reducing inlet component and the pressure reducing valve core 8. This seal not only provides a sealing effect but also dynamically seals as the pressure reducing inlet component reciprocates, ensuring that the liquid does not leak during the pressure reduction process.

[0040] In order to realize the drainage control function of the second outlet 33, the three-way body 3 is equipped with a hand-tight switch at the outlet end of the second outlet 33;

[0041] The hand-operated switch mechanism includes a switch ball 7. A large ball valve seal 6 is located at the top of the switch ball 7, and a small ball valve seal 10 is located at the bottom. The two seals form a closed spherical cavity, within which the switch ball 7 is perfectly fitted. A through-hole drainage channel is machined in the middle of the ball. When drainage is required, opening the channel of the switch ball 7 creates a liquid passage.

[0042] The opening and closing of the drainage channel is controlled by a lever drive shaft 13. The head of the lever drive shaft 13 is provided with a locking part, which is inserted into the locking groove 9 on the switch ball 7 to form a linkage. When the user rotates the switch handle 14 located outside the lever drive shaft 13, it can drive the ball to rotate, thereby opening or closing the drainage channel and realizing manual control of the liquid flow state.

[0043] At the output end of the switch ball 7, a two-way pipe interface 12 is also provided. The two-way pipe interface 12 is fixed to the tee body 3 by threads, and a small ball valve sealing plate is embedded inside the interface for auxiliary sealing to ensure that no leakage occurs when the drainage channel is closed. In addition, in order to enhance the stability of the structural connection, a two-way nut 11 is also threaded on the outside of the two-way pipe interface 12 for reinforcement and to facilitate the replacement and maintenance of the interface components.

[0044] The end of the entire pressure-reducing inlet 32 ​​is equipped with a standard M20 nut 1, which facilitates the quick connection and tightening of the three-way valve with external pipelines and is compatible with industrial standard installation specifications.

[0045] This utility model integrates the aforementioned pressure reducing component and manual drainage control component within the three-way valve structure. Without increasing additional installation space, it effectively achieves buffer control of the inlet hydraulic pressure and diversion control of the outlet direction. At the same time, it improves the safety and reliability of the system when facing sudden high pressure, water hammer effect and other working conditions. The structure is compact, the operation is simple, and it is suitable for various pipeline systems with high requirements for safety, diversion and pressure control.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A pressure-reducing three-way valve, characterized in that, include: Three-way The main body (3) includes a pressure-reducing inlet (32), a first outlet (34) and a second outlet (33); A pressure-reducing structure is provided at the input end of the pressure-reducing inlet (32) of the three-way body (3). After the liquid pressure is reduced by the pressure-reducing structure, the liquid is diverted to the positions of the first outlet (34) and the second outlet (33). The pressure-reducing structure includes: Pressure reducing valve core (8), which is sealed and assembled with the three-way body (3); The pressure reducing valve inlet component (4) is located on one side of the pressure reducing inlet port (32) of the three-way body (3). The pressure reducing valve inlet component (4) is slidably sealed to the three-way body (3). A counter-pressure screw (2) is threaded on the inlet end of the pressure reducing valve inlet component (4). A pressure-reducing spring (5) is disposed between the pressure-reducing valve core (8) and the pressure-reducing valve inlet (4). The pressure-reducing valve inlet (4) can perform a buffer extension and retraction action relative to the pressure-reducing valve core (8). The pressure-reducing valve core (8) is provided with one or more first diversion ports (81) around the pressure-reducing valve core (8). The liquid enters the second outlet (33) through the first diversion port (81). The three-way body (3) is also provided with one or more second diversion ports (31), through which the liquid enters into the first outlet port (34).

2. The pressure-reducing three-way valve according to claim 1, characterized in that: The pressure reducing valve inlet (4) has a pressure reducing inlet and a pressure reducing outlet, the diameter of which is larger than that of the pressure reducing outlet.

3. The pressure-reducing three-way valve according to claim 2, characterized in that: An O-ring piston seal is provided between the pressure reducing valve inlet and the pressure reducing valve core (8), and the O-ring piston seal moves back and forth with the pressure reducing valve inlet (4).

4. The pressure-reducing three-way valve according to claim 1, characterized in that: The three-way body (3) is equipped with a hand-tight switch mechanism at the second liquid outlet (33).

5. The pressure-reducing three-way valve according to claim 4, characterized in that: The hand-tightening switch mechanism includes a switch ball (7), a large ball valve sealing plate (6) is provided on the top of the switch ball (7), a small ball valve sealing plate (10) is provided on the bottom of the switch ball (7), and a spherical cavity is provided between the large ball valve sealing plate (6) and the small ball valve sealing plate (10). The switch ball (7) is located in the spherical cavity between the large ball valve sealing plate (6) and the small ball valve sealing plate (10), and a through drainage channel is provided in the middle of the switch ball (7). It also includes a handle drive shaft (13), the head of which is provided with a locking part, and the switch ball (7) is provided with a locking groove (9), the locking part is locked into the locking groove (9), and a switch handle (14) is provided on the outside of the handle drive shaft (13), and the drainage channel is opened or closed by rotating the switch handle (14).

6. The pressure-reducing three-way valve according to claim 5, characterized in that: The output end of the switch ball (7) is located at the position of the second liquid outlet (33) and a two-way pipe interface (12) is provided. The two-way pipe interface (12) is threadedly connected to the three-way body (3), and the ball valve small sealing piece is embedded in the two-way pipe interface (12).

7. The pressure-reducing three-way valve according to claim 6, characterized in that: A two-part nut (11) is installed on the external thread of the two-part pipe interface (12).

8. The pressure-reducing three-way valve according to claim 1, characterized in that: An M20 nut (1) is provided at the pressure-reducing inlet (32) position of the three-way body (3).

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