A waterway tee switch valve

Abstract

This utility model provides a water circuit three-way switching valve, including: an electric valve and an internal flow guiding and limiting component. The lower end of the electric valve is provided with a valve body for controlling the switching of the water circuit three-way. The right side of the electric valve is provided with an internal flow guiding and limiting component for fastening and limiting the flow space inside the second flow guide pipe. Compared with the prior art, this utility model has the following beneficial effects: When switched to the lateral flow guiding state, the water flows into the valve body through the lateral flow guide port. The upper support rod compresses the spring under hydraulic action, so that the limiting support block and the top shell are axially fixed. When the electric valve stops working, the spring resets and pushes the limiting piston to close the lower flow guide port. The spherical cooperation between the upper support seat and the lower support ball seat eliminates lateral movement. At this time, the internal flow guiding and limiting component is in a self-locking state, thereby blocking the water inside the second flow guide pipe through the limiting piston and fastening and limiting it.

Description

Technical Field

[0001] This utility model belongs to the technical field of water circuit three-way switching valves, and relates to a water circuit three-way switching valve. Background Technology

[0002] The existing three-way switching valves for water circuits have several drawbacks in limiting and sealing water flow, primarily manifested in insufficient sealing performance, operational complexity, high maintenance costs, and impacts on fluid dynamics. Insufficient sealing performance can lead to water leakage during switching, mainly due to aging, wear, or improper installation of the sealing material between the valve core and seat. Operational complexity arises because the three-way switching valve requires precise control to ensure a smooth switching process and avoid water hammer. However, improper operation or mechanical failure can lead to switching failure. Conventional solutions include using higher-quality sealing materials, increasing the contact area between the valve core and seat, employing more precise control technology, and regular maintenance and inspection. However, these methods, while improving sealing performance and operational precision, often require higher initial investment costs, and long-term maintenance and seal replacement still incur ongoing operating costs. Therefore, a new three-way switching valve for water circuits is urgently needed to address these issues. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a water circuit three-way switching valve to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a water circuit three-way switching valve, including: an electric valve and an internal flow guiding and limiting component. The lower end of the electric valve is provided with a set of valve bodies for controlling the switching of the water circuit three-way. The right side of the electric valve is provided with a set of internal flow guiding and limiting components for fastening and limiting the internal flow space of the flow guiding pipe.

[0005] The internal flow guiding and limiting component includes a top shell and a limiting piston. The lower end of the top shell is provided with a set of lower shells for guiding the deformation of the spring. The lower end of the lower shell is provided with a set of lower flow guide ports for introducing water from the second flow guide pipe. The lower left side of the lower shell is provided with a set of side flow guide ports for guiding water from the second flow guide pipe to the inside of the valve body. An internal connecting cavity is provided between the side flow guide ports and the lower flow guide ports to connect them.

[0006] In a preferred embodiment, the inner connecting cavity is provided with a set of lower support ball seats for limiting and securing the flow guiding space. The lower end of the lower support ball seats is provided with a set of limiting pistons for blocking and limiting the lower flow guide port. In actual use, when the electric valve is activated, it drives the valve body to rotate and switch the water flow direction. The water flow from the second flow guide pipe enters the inner flow guiding limiting component through the lower flow guide port. The spring, under water pressure, pushes the limiting pistons downward to open the lower flow guide port channel. When the water flows through the inner connecting cavity, the lower support ball seats radially limit the flow guiding space. Meanwhile, the conical structure of the limiting piston ensures a sealed fit with the lower guide port. When switching to the lateral guide state, the water flows into the valve body through the lateral guide port. The upper support rod compresses the spring under hydraulic action, causing the limiting support block and the top shell to be axially fixed. When the electric valve stops working, the spring resets and pushes the limiting piston to close the lower guide port. The spherical fit between the upper support and the lower support ball seat eliminates lateral movement. At this time, the inner guide limiting component is in a self-locking state, thereby blocking the water inside the guide pipe through the limiting piston and tightening and limiting it.

[0007] In a preferred embodiment, the upper end of the lower support ball seat is provided with a set of springs for adaptively adjusting the sealing pressure according to the water flow pressure, and the upper end of the spring is provided with a set of upper support seats for fixed connection to its upper end.

[0008] In a preferred embodiment, the upper end of the upper support is provided with a set of upper support rods for connecting, fixing and fastening the upper end thereto, and the upper end of the upper support rods is provided with a set of limiting support blocks for limiting and fixing them.

[0009] In a preferred embodiment, the lower end of the valve body is provided with an upper valve cover for sealing and protecting the interior of the upper end of the valve body, and the lower end of the upper valve cover is provided with a lower valve shell for sealing and protecting the lower end of the valve body. The lower valve shell and the upper valve cover are connected and fixed by several sets of bolts.

[0010] In a preferred embodiment, a set of inner sealing gaskets for preventing water leakage is provided at the contact position between the lower end of the upper valve cover and the upper end of the lower valve shell. The valve body seal penetrates the interior of the upper valve cover and is connected and fixed to the inner side of the upper end of the lower valve shell. The upper valve cover and the lower valve shell constitute a set of sealing seats.

[0011] In a preferred embodiment, the left side of the sealing connector is provided with a set of guide pipes for conducting water, and the right side of the sealing connector is provided with a set of guide pipes for discharging water.

[0012] In a preferred embodiment, the rear side of the sealing seat is provided with a set of guide pipes three for introducing or exporting external water. The guide pipes one and three are connected to the valve body via an electric valve. In actual use, activating the electric valve drives the valve core to rotate, and water flows through the guide pipes three into the valve body. When the water pressure reaches a set value, the spring is compressed and deformed, pushing the upper support seat downwards, causing the lower support ball seat to form a dynamic seal with the limiting piston. When switching to the guide pipe two output mode, the side guide port opens under hydraulic pressure, allowing the limiting support block to pass through. The upper support rod fixes the flow channel position, while the inner sealing gasket ensures the sealing of the joint surface between the upper valve cover and the lower valve body. The first guide pipe serves as a backup channel and remains normally closed. Its opening and closing are controlled by the rotation angle of the electric valve core. When the machine stops, the spring resets and drives the limit piston to close the lower guide port. The wedge structure of the upper support rod and the limit support block achieves mechanical self-locking. The entire process maintains the integrity of the pressure boundary through the sealing seat connected by bolts. The conical head design of the third guide pipe can prevent backflow interference. The adaptive adjustment function of the inner guide limit component ensures the flow stability under different operating conditions.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When the electric valve is started, the valve body is rotated to switch the direction of water flow. The water flow in the second guide pipe enters the inner guide limiting component through the lower guide port. The spring is pushed by the water pressure to move the limiting piston down and open the lower guide port channel. When the water flows through the inner connecting cavity, the lower support ball seat radially limits the guide space. At the same time, the conical structure of the limiting piston ensures a sealing fit with the lower guide port. When switching to the lateral guide state, the water flow enters the valve body through the side guide port. The upper support rod compresses the spring under hydraulic action, so that the limiting support block and the top shell are axially fixed. When the electric valve stops working, the spring resets and pushes the limiting piston to close the lower guide port. The spherical fit between the upper support and the lower support ball seat eliminates lateral movement. At this time, the inner guide limiting component is in a self-locking state, thereby blocking the water inside the second guide pipe through the limiting piston and fastening and limiting it.

[0014] In practical use, the electric valve is started to drive the valve core to rotate, and the water flows into the valve body through the third guide pipe. When the water pressure reaches the set value, the spring is compressed and deformed, pushing the upper support seat to move down, so that the lower support ball seat and the limit piston form a dynamic seal. When switching to the output mode of the second guide pipe, the side guide port is opened under hydraulic action. The limit support block fixes the flow channel position through the upper support rod. At the same time, the inner sealing gasket ensures the sealing of the joint surface between the upper valve cover and the lower valve shell. The first guide pipe is kept in a normally closed state as a backup channel. Its opening and closing is controlled by the rotation angle of the electric valve core. When the machine stops, the spring resets and drives the limit piston to close the lower guide port. The wedge structure of the upper support rod and the limit support block realizes mechanical self-locking. The entire process maintains the integrity of the pressure boundary through the sealing seat connected by bolts. The conical head design of the third guide pipe can prevent backflow interference. The adaptive adjustment function of the inner guide limit component ensures the flow stability under different working conditions. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the right oblique front view of a water circuit three-way switching valve according to the present invention;

[0017] Figure 2 This is a front view of the internal flow guiding and limiting component in a water circuit three-way switching valve according to the present invention.

[0018] Figure 3 This is a front view of the internal structure of the lower shell of a water circuit three-way switching valve according to the present invention.

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0020] In the diagram: 100-electric valve, 110-valve body, 120-upper valve cover, 130-lower valve housing, 140-guide tube one, 150-guide tube two, 160-inner guide limiting component;

[0021] 16a-Top shell, 16b-Lower shell, 16c-Lower guide port, 16d-Side guide port, 16e-Limiting support block, 16f-Upper support rod, 16g-Upper support seat, 16h-Spring, 16i-Lower support ball seat, 16j-Limiting piston. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 As the first embodiment of this utility model: a water circuit three-way switching valve, including: an electric valve 100 and an inner flow guiding and limiting component 160. The lower end of the electric valve 100 is provided with a valve body 110 for controlling the switching of the water circuit three-way, and the right side of the electric valve 100 is provided with an inner flow guiding and limiting component 160 for fastening and limiting the flow space inside the flow guiding pipe 150.

[0024] The internal flow guiding and limiting component 160 includes a top shell 16a and a limiting piston 16j. The lower end of the top shell 16a is provided with a set of lower shells 16b for guiding the deformation of the spring 16h. The lower end of the lower shell 16b is provided with a set of lower flow guide ports 16c for introducing water into the second flow guide pipe 150. The lower left side of the lower shell 16b is provided with a set of side flow guide ports 16d for guiding the water inside the second flow guide pipe 150 to the inside of the valve body 110. An internal connecting cavity is provided between the side flow guide ports 16d and the lower flow guide ports 16c for connecting them.

[0025] Inside the inner connecting cavity, there is a set of lower support ball seats 16i for limiting and securing the flow guiding space. At the lower end of the lower support ball seats 16i, there is a set of limiting pistons 16j for blocking and limiting the lower flow guide port 16c. In actual use, when the electric valve 100 is activated, it drives the valve body 110 to rotate and switch the water flow direction. The water flow from the second guide pipe 150 enters the inner flow guiding limiting component 160 through the lower flow guide port 16c. The spring 16h, under water pressure, pushes the limiting pistons 16j downwards to open the lower flow guide port 16c. When the water flows through the inner connecting cavity, the lower support ball seats 16i radially limit the flow guiding space, while the conical structure of the limiting pistons 16j... To ensure a tight seal with the lower guide port 16c, when switching to the lateral guide state, water flows into the valve body 110 through the side guide port 16d. The upper support rod 16f compresses the spring 16h under hydraulic pressure, causing the limiting support block 16e to be axially fixed with the top shell 16a. When the electric valve 100 stops working, the spring 16h resets and pushes the limiting piston 16j to close the lower guide port 16c. The spherical fit between the upper support seat 16g and the lower support ball seat 16i eliminates lateral movement. At this time, the inner guide limiting component 160 is in a self-locking state, thereby blocking the water inside the guide pipe 150 through the limiting piston 16j and tightening and limiting it.

[0026] Please see Figures 1-4 As a second embodiment of this utility model: based on the description in the above embodiments, further, the upper end of the lower support ball seat 16i is provided with a set of springs 16h for adaptively adjusting the sealing pressure according to the water flow pressure, and the upper end of the springs 16h is provided with a set of upper support seats 16g for fixed connection to the upper end of the springs 16h.

[0027] The upper support 16g is provided with a set of upper support rods 16f for connecting, fixing and fastening the upper end of the upper support, and the upper end of the upper support rods 16f is provided with a set of limiting support blocks 16e for limiting and fixing the upper end of the upper support.

[0028] The lower end of the valve body 110 is provided with an upper valve cover 120 for sealing and protecting the interior of the upper end of the valve body 110. The lower end of the upper valve cover 120 is provided with a lower valve shell 130 for sealing and protecting the lower end of the valve body 110. The lower valve shell 130 and the upper valve cover 120 are connected and fixed by several sets of bolts.

[0029] A set of inner sealing gaskets for preventing water leakage is provided at the contact position between the lower end of the upper valve cover 120 and the upper end of the lower valve housing 130. The valve body 110 seals through the interior of the upper valve cover 120 and is connected and fixed to the inner side of the upper end of the lower valve housing 130. The upper valve cover 120 and the lower valve housing 130 form a set of sealing seats.

[0030] The left side of the sealing connector is provided with a set of guide pipes 140 for conducting water, and the right side of the sealing connector is provided with a set of guide pipes 150 for discharging water.

[0031] A set of three guide pipes is provided on the rear side of the sealing connector for introducing or exporting external water. The interior of the first guide pipe 140 and the third guide pipe are connected to the interior of the valve body 110 through the electric valve 100. In actual use, the electric valve 100 is activated to drive the valve core to rotate, and the water flows into the interior of the valve body 110 through the third guide pipe. When the water pressure reaches the set value, the spring 16h is compressed and deformed, pushing the upper support seat 16g to move down, so that the lower support ball seat 16i and the limit piston 16j form a dynamic seal. When switching to the output mode of the second guide pipe 150, the side guide port 16d is opened under hydraulic action, and the limit support block 16e is connected to the upper support rod 16 The fixed flow channel position, along with the inner sealing gasket, ensures the sealing of the mating surface between the upper valve cover 120 and the lower valve housing 130. The first guide pipe 140 serves as a backup channel and remains normally closed; its opening and closing are controlled by the rotation angle of the electric valve 100 core. When the machine stops, the spring 16h resets, driving the limit piston 16j to close the lower guide port 16c. The wedge-shaped structure of the upper support rod 16f and the limit support block 16e achieves mechanical self-locking. The entire process maintains the integrity of the pressure boundary through bolted sealing seats. The conical head design of the third guide pipe prevents backflow interference. The adaptive adjustment function of the inner guide limiting component 160 ensures flow stability under different operating conditions. The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A waterway tee switch valve, comprising: The electric valve (100) and the internal flow limiting component (160) are characterized in that: the lower end of the electric valve (100) is provided with a set of valve bodies (110) for controlling the switching of the three-way water passage, and the right side of the electric valve (100) is provided with a set of internal flow limiting components (160) for fastening and limiting the flow space inside the second flow pipe (150). The internal flow guiding and limiting component (160) includes a top shell (16a) and a limiting piston (16j). The lower end of the top shell (16a) is provided with a set of lower shells (16b) for guiding the deformation of the spring (16h). The lower end of the lower shell (16b) is provided with a set of lower flow ports (16c) for introducing water into the second flow pipe (150). The lower left side of the lower shell (16b) is provided with a set of side flow ports (16d) for guiding the water inside the second flow pipe (150) to the inside of the valve body (110). There is an internal connecting cavity between the side flow ports (16d) and the lower flow ports (16c) for connecting them.

2. The waterway tee switch valve according to claim 1, characterized in that: The inner connecting cavity is provided with a set of lower support ball seats (16i) for limiting and fastening the flow guiding space. The lower end of the lower support ball seats (16i) is provided with a set of limiting pistons (16j) for blocking and limiting the lower flow guiding port (16c).

3. A water circuit three-way switching valve according to claim 2, characterized in that: The lower support ball seat (16i) is provided with a set of springs (16h) for adaptively adjusting the sealing pressure according to the water flow pressure. The upper end of the spring (16h) is provided with a set of upper support seats (16g) for fixed connection to its upper end.

4. A water circuit three-way switching valve according to claim 3, characterized in that: The upper support (16g) is provided with a set of upper support rods (16f) for connecting, fixing and fastening the upper end of the upper support rods (16f), and the upper end of the upper support rods (16f) is provided with a set of limiting support blocks (16e) for limiting and fixing the upper end of the upper support rods (16f).

5. A water circuit three-way switching valve according to claim 4, characterized in that: The lower end of the valve body (110) is provided with an upper valve cover (120) for sealing and protecting the interior of the upper end of the valve body (110). The lower end of the upper valve cover (120) is provided with a lower valve shell (130) for sealing and protecting the lower end of the valve body (110). The lower valve shell (130) and the upper valve cover (120) are connected and fixed by several sets of bolts.

6. A water circuit three-way switching valve according to claim 5, characterized in that: The lower end of the upper valve cover (120) is provided with a set of inner sealing gaskets at the contact position between the lower end of the upper valve cover (130) and the upper end of the lower valve housing (130). The valve body (110) is sealed through the interior of the upper valve cover (120) and is connected and fixed to the inner side of the upper end of the lower valve housing (130). The upper valve cover (120) and the lower valve housing (130) form a set of sealing seats.

7. A water circuit three-way switching valve according to claim 6, characterized in that: The left side of the sealing connector is provided with a set of guide pipes (140) for conducting water, and the right side of the sealing connector is provided with a set of guide pipes (150) for discharging water.

8. A water circuit three-way switching valve according to claim 7, characterized in that: The rear side of the sealing connector is provided with a set of three guide pipes for introducing or exporting external water. The guide pipes (140) and the three guide pipes are connected to the valve body (110) through an electric valve (100).

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