Flow path switching system and soft water supply device

Abstract

The embodiment of the invention discloses a flow path switching system and a soft water supply device.The flow path switching system comprises a fluid inlet, a first flow path, a second flow path, a first communication opening, a second communication opening and a flow path switching module, the first flow path communicates with the fluid inlet through the first communication opening, and the second flow path communicates with the fluid inlet through the second communication opening; the flow path switching module comprises an elastic part and a valve body, the valve body is elastically assembled on the mounting part through the elastic part, and the valve body is configured to move from the first communication port to the second communication port under the elastic force action of the elastic part so as to open the first communication port and cover the second communication port, and move from the second communication port to the first communication port under the external force action so as to cover the second communication port. Therefore, the second communication port is opened and the first communication port is covered. According to the technical scheme, switching type communication between the first flow path and the same fluid inlet and between the second flow path and the same fluid inlet can be achieved by controlling communication and closing of the flow path switching ports.

Description

Technical Field

[0001] This application relates to the field of flow path switching technology, and in particular to a flow path switching system and a soft water supply device. Background Technology

[0002] Currently, with the improvement of people's living standards, people's requirements for daily water use are also increasing. Due to factors such as region, water quality varies greatly across the country, and water resources differ significantly. In most areas, the water quality is hard. Long-term use of hard water can cause dry, rough skin and accelerated aging. Therefore, people's demand for soft water is constantly rising. Soft water contains little or no soluble calcium and magnesium compounds. Using soft water can effectively inhibit fungi, delay skin aging, and prevent scale formation after heating, making it beneficial to life in every way.

[0003] Based on this, water softening devices have emerged on the market that convert hard water into soft water. These devices use softening resin to remove calcium and magnesium ions from the water, thus reducing its hardness. However, once the softening resin has been used to a certain extent, it becomes ineffective and needs to be regenerated using saturated brine to allow it to be reused. Therefore, generally speaking, water softening devices have at least two flow paths: one for softening the incoming water and the other for absorbing brine and promoting resin regeneration.

[0004] In related technologies, each flow path of a soft water supply device is set up independently, that is, each flow path is equipped with an independent inlet to connect to the inlet pipe. This makes the external piping of the soft water supply device structurally complex, causing many inconveniences for installation and maintenance personnel. Summary of the Invention

[0005] In view of this, this application provides a flow path switching system and a soft water supply device to solve the technical problem that in the prior art, each flow path of the soft water supply device is set independently, which makes the external piping of the soft water supply device structurally complex and brings many inconveniences to the installation and maintenance personnel.

[0006] To achieve one or more of the above objectives or other objectives, this application proposes a flow path switching system. The flow path switching system includes a fluid inlet, a first flow path, a second flow path, a first connecting port, a second connecting port, and a flow path switching module. The first flow path is connected to the fluid inlet through the first connecting port, and the second flow path is connected to the fluid inlet through the second connecting port. The flow path switching module includes an elastic element and a valve body. The valve body is elastically mounted on a mounting position through the elastic element, and the valve body is configured to move from the first connecting port to the second connecting port under the elastic force of the elastic element to open the first connecting port and cover the second connecting port, and to move from the second connecting port to the first connecting port under the action of an external force to open the second connecting port and cover the first connecting port.

[0007] Optionally, in some embodiments of this application, the elastic element includes a spring, one end of which is connected to the mounting portion, and the other end of which is connected to the valve body; or,

[0008] The elastic element includes a spring, one end of which abuts against the mounting portion, and the other end of which abuts against the valve body.

[0009] Optionally, in some embodiments of this application, the elastic element includes an elastic pad, one end of which is connected to the mounting portion, and the other end of which is connected to the valve body; or,

[0010] The elastic element includes an elastic pad, one end of which abuts against the mounting portion, and the other end of which abuts against the valve body.

[0011] Optionally, in some embodiments of this application, the flow path switching module further includes a pressure regulating mounting cavity, the fluid pressure in the pressure regulating mounting cavity is configured to be adjustable, the mounting part is disposed in the pressure regulating mounting cavity, and the valve body is further configured to move from the second communication port to the first communication port under the pressure difference force formed when the fluid pressure in the pressure regulating mounting cavity is less than the fluid pressure outside the pressure regulating mounting cavity, so as to open the second communication port and cover the first communication port.

[0012] Optionally, in some embodiments of this application, the pressure regulating mounting cavity is provided with a movable channel, and the elastic element includes a spring, a movable element, and a connecting element. The movable element is movably installed in the movable channel and is configured to move along the extension direction of the movable channel. The side of the movable element located inside the pressure regulating mounting cavity abuts or connects to the mounting part through the spring, and the side of the movable element located outside the pressure regulating mounting cavity is connected to the valve body through the connecting element.

[0013] Optionally, in some embodiments of this application, the pressure regulating mounting cavity is provided with a movable channel, and the elastic element includes an elastic pad, a movable element, and a connecting element. The movable element is movably installed in the movable channel and is configured to move along the extension direction of the movable channel. The side of the movable element located inside the pressure regulating mounting cavity abuts or connects to the mounting part through the elastic pad, and the side of the movable element located outside the pressure regulating mounting cavity is connected to the valve body through the connecting element.

[0014] Optionally, in some embodiments of this application, the pressure regulating installation cavity is provided with a pressure regulating valve, which is disposed on the cavity wall of the pressure regulating installation cavity for adjusting the fluid pressure in the pressure regulating installation cavity.

[0015] Optionally, in some embodiments of this application, the valve body is provided with a first filling portion on the side facing the first communication port, and the outer contour of the first filling portion is adapted to the first communication port.

[0016] Optionally, in some embodiments of this application, the valve body is provided with a second filling portion on the side facing the second communication port, and the outer contour of the second filling portion is adapted to the second communication port.

[0017] In addition, to achieve one or more of the above objectives or other objectives, this application also proposes a soft water supply device, which includes the above-mentioned flow path switching system.

[0018] The flow path switching system and soft water supply device provided in this application embodiment, through the above-described structural configuration, in its flow path switching system, a first flow path is connected to the fluid inlet through a first connecting port, and a second flow path is connected to the fluid inlet through a second connecting port. The valve body of the flow path switching module can move from the first connecting port to the second connecting port under the elastic force of its elastic element, thereby opening the first connecting port and closing the second connecting port. When it is necessary to close the first connecting port and open the second connecting port, only an external force such as fluid pressure or fluid pressure difference is needed to overcome the elastic force of its elastic element, causing the valve body of the flow path switching module to move from the second connecting port to the first connecting port. That is, the flow path switching system can switch between the two fluid paths. Under the movement of the valve body of the flow path switching module, either the first connecting port is opened and the second connecting port is covered, so that the first flow path is connected to the fluid inlet, or the first connecting port is covered and the second connecting port is opened, so that the second flow path is connected to the fluid inlet. In this way, the flow path switching system can control the connection and closure of the first and second connecting ports respectively through the flow path switching module to realize the switching connection between the first and second flow paths and the same fluid inlet. This significantly reduces the number of fluid inlets in the flow path switching system or the number of fluid inlets in the soft water supply device with the flow path switching system, thereby reducing the structural complexity of the external piping of the flow path switching system or the external piping of the soft water supply device with the flow path switching system, and providing convenience for installation and maintenance personnel. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] in:

[0021] Figure 1 This is a schematic diagram of the first state of the flow path switching system in the embodiments of this application.

[0022] Figure 2 This is a schematic diagram of the second state of the flow path switching system in the embodiments of this application.

[0023] Figure label:

[0024] 1. Flow path switching system; 10. Fluid inlet; 20. First connecting port; 30. Second connecting port; 40. Flow path switching module; 41. Elastic element; 411. Spring; 412. Moving element; 413. Connecting element; 42. Valve body; 421. First filling part; 422. Second filling part; 43. Pressure regulating mounting cavity; 431. Moving channel; 432. Pressure regulating valve; 50. Flow path connecting port; 61. Resin tank; 62. Venturi structure; 63. Salt tank. Detailed Implementation

[0025] To better understand and implement this application, the technical solutions in this application will be clearly and completely described below with reference to the accompanying drawings.

[0026] In the description of this application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0028] In one embodiment, see Figure 1 and Figure 2 This application provides a flow path switching system 1, which specifically includes a fluid inlet 10, a first flow path, a second flow path, a first connecting port 20, a second connecting port 30, and a flow path switching module 40. The first flow path is connected to the fluid inlet 10 through the first connecting port 20, and the second flow path is connected to the fluid inlet 10 through the second connecting port 30. The flow path switching module 40 specifically includes an elastic element 41 and a valve body 42. The valve body 42 is elastically mounted on the mounting position through the elastic element 41, and the valve body 42 is configured to move from the first connecting port 20 to the second connecting port 30 under the elastic force of the elastic element 41 to open the first connecting port 20 and cover the second connecting port 30, and to move from the second connecting port 30 to the first connecting port 20 under the action of an external force to open the second connecting port 30 and cover the first connecting port 20.

[0029] It should be noted that the flow path switching system 1 provided in this application embodiment can be either a liquid flow path switching system 1 or a gas flow path switching system 1. When it is specifically a liquid flow path switching system 1, both the first flow path and the second flow path are specifically liquid flow paths. And when it is specifically a gas flow path switching system 1, both the first flow path and the second flow path are specifically gas flow paths. Because the first flow path (i.e....) Figure 1 The flow path indicated by the middle arrow is connected to the fluid inlet 10 through the first connecting port 20, so that when the first connecting port 20 is open, the fluid entering through the fluid inlet 10 can enter the first flow path. Similarly, the second flow path (i.e. Figure 2 The flow path (indicated by the middle arrow) is connected to the fluid inlet 10 through the second connecting port 30, so that when the second connecting port 30 is open, the fluid entering through the fluid inlet 10 can enter the second flow path. The aforementioned installation location should be specifically located in the flow path switching system 1, and simultaneously adjacent to the first connecting port 20 and the second connecting port 30. Preferably, the aforementioned installation location should be located in the arrangement direction of the first connecting port 20 and the second connecting port 30, to ensure that when the valve body 42 is elastically assembled onto the installation location by the elastic member 41, the direction of the elastic force of the elastic member 41 is in the arrangement direction of the first connecting port 20 and the second connecting port 30, thereby ensuring that the valve body 42 can move from the first connecting port 20 to the second connecting port 30 under the elastic force of the elastic member 41, to open the first connecting port 20 and cover the second connecting port 30.

[0030] Generally speaking, when the flow path switching system 1 provided in this application needs to close the first connection port 20 and open the second connection port 30, in addition to manual external force, external force such as fluid pressure or fluid pressure difference can also be used to overcome the elastic force of the elastic element 41 of its flow path switching module 40, so that the valve body 42 of its flow path switching module 40 can move from the second connection port 30 to the first connection port 20.

[0031] Furthermore, the flow path switching module 40 in this embodiment can also be used to connect and close the flow path port. In this case, the valve body 42 of the flow path switching module 40 is configured to move closer to the flow path port 50 under the elastic force of the elastic member 41, so as to cover the flow path port 50 and close the flow path port 50. When it is necessary to open the flow path port 50, the elastic force of the elastic member 41 can be overcome by an external force such as fluid pressure, so that the valve body 42 moves away from the flow path port 50.

[0032] Thus, the flow path switching system 1 provided in this embodiment, through the above-described structural configuration, has its first flow path connected to the fluid inlet 10 via the first connecting port 20, and its second flow path connected to the fluid inlet 10 via the second connecting port 30. The valve body 42 of the flow path switching module 40 can move from the first connecting port 20 to the second connecting port 30 under the elastic force of its elastic element 41, thereby opening the first connecting port 20 and closing the second connecting port 30. When it is necessary to close the first connecting port 20 and open the second connecting port 30, only an external force such as fluid pressure or fluid pressure difference is needed to overcome the elastic force of its elastic element 41, allowing the valve body 42 of the flow path switching module 40 to move from the second connecting port 30 to the first connecting port 20. That is, this flow path switching system 1 can achieve the following: When the valve body 42 of the flow path switching module 40 moves, it either opens the first connection port 20 and covers the second connection port 30 to connect the first flow path with the fluid inlet 10, or covers the first connection port 20 and opens the second connection port 30 to connect the second flow path with the fluid inlet 10. In this way, the flow path switching system 1 can control the connection and closure of the first connection port 20 and the second connection port 30 respectively through the flow path switching module 40 to realize the switching connection between the first flow path and the second flow path and the same fluid inlet 10. This greatly reduces the number of fluid inlets 10 of the flow path switching system 1 or the number of fluid inlets 10 of the soft water supply device with the flow path switching system 1, thereby reducing the structural complexity of the external piping of the flow path switching system 1 or the external piping of the soft water supply device with the flow path switching system 1, and providing convenience for installation and maintenance personnel.

[0033] In some examples, such as Figure 1 and Figure 2 As shown, the elastic element 41 may specifically include a spring 411, one end of which is connected to the mounting part, and the other end of which is connected to the valve body 42. Thus, with the above structural arrangement, the valve body 42 can be subjected to external force to compress the spring 411, causing the spring 411 to undergo elastic deformation and generate a corresponding elastic force. When the external force decreases or disappears, the valve body 42 can move from the first connecting port 20 to the second connecting port 30 under the elastic force of the spring 411, thereby opening the first connecting port 20 and covering the second connecting port 30.

[0034] It should be noted that the spring 411 in this example can be a spiral or wave-shaped structure. Its material is generally a metal, such as high-carbon steel, stainless steel, or alloys, preferably alloys, including but not limited to copper alloys, titanium alloys, tungsten / molybdenum alloys, nickel-based alloys, and cobalt-based alloys, giving it the characteristics of multiple metals and meeting the long-term use requirements of various application scenarios. Preferably, the extension direction of the spring 411 in this example should be the arrangement direction of the first connecting port 20 and the second connecting port 30, ensuring that the direction of the elastic force of the spring 411 is in the arrangement direction of the first connecting port 20 and the second connecting port 30. This ensures that the valve body 42 can move from the first connecting port 20 to the second connecting port 30 under the elastic force of the spring 411, opening the first connecting port 20 and covering the second connecting port 30. Furthermore, the connection between the spring 411 and the mounting part, and the connection between the spring 411 and the valve body 42 in this example, can be a fixed connection using glue or welding, or a detachable connection using screws or clips.

[0035] In some examples, the elastic element 41 may specifically include a spring 411, one end of which abuts against the mounting portion, and the other end of which abuts against the valve body 42. Thus, with the above structural arrangement, when the valve body 42 is subjected to external force to compress the spring 411, causing elastic deformation, a corresponding elastic force is generated. When the external force decreases or disappears, the valve body 42, under the elastic force of the spring 411, can move from the first connecting port 20 to the second connecting port 30, thereby opening the first connecting port 20 and covering the second connecting port 30.

[0036] It should be noted that, unlike the previous example where the spring 411 was installed with its two ends connected to the mounting part and the valve body 42 respectively, in this example, the spring 411 is installed with its two ends abutting against the mounting part and the valve body 42 respectively. This further facilitates the installation and removal of the flow path switching module 40. Preferably, to prevent the two ends of the spring 411 from shifting position relative to their corresponding abutting parts during prolonged use, a spring 411 receiving groove can be provided on both the mounting part and the valve body 42 to accommodate the corresponding ends of the spring 411.

[0037] In some examples, the elastic element 41 may specifically include an elastic pad, one end of which is connected to the mounting portion, and the other end of which is connected to the valve body 42. Thus, with the above structural arrangement, the valve body 42 can be subjected to external force to compress the elastic pad, causing it to deform elastically and generate a corresponding elastic force. When the external force decreases or disappears, the valve body 42 can move from the first connection port 20 to the second connection port 30 under the elastic force of the elastic pad, thereby opening the first connection port 20 and covering the second connection port 30.

[0038] It should be noted that the elastic pad in this example can be a columnar structure, including but not limited to cylindrical or polygonal columns. Furthermore, its material is generally a gel material, including but not limited to rubber, silicone, and polyurethane gel, giving it excellent elasticity. Preferably, the extension direction of the elastic pad in this example should be the alignment direction of the first connecting port 20 and the second connecting port 30, ensuring that the direction of the elastic force of the elastic pad is the alignment direction of the first connecting port 20 and the second connecting port 30. This ensures that the valve body 42 can move from the first connecting port 20 to the second connecting port 30 under the elastic force of the elastic pad, thereby opening the first connecting port 20 and covering the second connecting port 30. In addition, the connection between the elastic pad and the mounting part, and the connection between the elastic pad and the valve body 42, in this example can be a fixed connection method such as glue, or a detachable connection method such as screws or clips.

[0039] In some examples, the elastic element 41 includes an elastic pad, one end of which abuts against the mounting portion, and the other end of which abuts against the valve body 42. Thus, with the above structural arrangement, when the valve body 42 is subjected to external force to compress the elastic pad, causing elastic deformation, a corresponding elastic force is generated. When the external force decreases or disappears, the valve body 42 can move from the first connection port 20 to the second connection port 30 under the elastic force of the elastic pad, thereby opening the first connection port 20 and covering the second connection port 30.

[0040] It should be noted that, unlike the previous example where the elastic pad was installed with its two ends connected to the mounting part and the valve body 42 respectively, in this example, the elastic pad is installed with its two ends abutting against the mounting part and the valve body 42 respectively. This further facilitates the installation and removal of the flow path switching module 40. Preferably, to prevent the two ends of the elastic pad from shifting from their corresponding abutting parts during long-term use, an elastic pad receiving groove can be provided on the mounting part and the valve body 42 respectively to accommodate the corresponding ends of the elastic pad.

[0041] In some examples, such as Figure 1 and Figure 2 As shown, the flow path switching module 40 specifically includes a pressure regulating mounting cavity 43. The fluid pressure within the pressure regulating mounting cavity 43 is adjustable. The mounting part is located within the pressure regulating mounting cavity 43. The valve body 42 is further configured to move from the second connecting port 30 to the first connecting port 20 under the pressure difference force formed when the fluid pressure within the pressure regulating mounting cavity 43 is less than the fluid pressure outside the pressure regulating mounting cavity 43, thereby opening the second connecting port 30 and covering the first connecting port 20. Thus, through the above structural configuration, when the first connecting port 20 needs to be closed and the second connecting port 30 needs to be opened, the fluid pressure within the pressure regulating mounting cavity 43 is made less than the fluid pressure outside the pressure regulating mounting cavity 43. The pressure difference force formed by the pressure difference overcomes the elastic force of the elastic element 41, allowing the valve body 42 to move from the second connecting port 30 to the first connecting port 20.

[0042] It should be noted that the fluid pressure in this example can specifically be gas pressure or liquid pressure.

[0043] In some examples, such as Figure 1 and Figure 2 As shown, the pressure regulating mounting cavity 43 may specifically be provided with a movable channel 431. In this case, the elastic element 41 may specifically include a spring 411, a movable element 412, and a connecting element 413. The movable element 412 is movably installed in the movable channel 431 and is configured to move along the extension direction of the movable channel 431. The side of the movable element 412 located inside the pressure regulating mounting cavity 43 abuts or connects to the mounting part via the spring 411, and the side of the movable element 412 located outside the pressure regulating mounting cavity 43 is connected to the valve body 42 via the connecting element 413. Thus, with the above structural configuration, when the first connecting port 20 needs to be closed and the second connecting port 30 needs to be opened, the fluid pressure inside the pressure regulating mounting cavity 43 is made less than the fluid pressure outside the pressure regulating mounting cavity 43. The pressure difference between the two then acts on the side of the movable element 412 located outside the pressure regulating mounting cavity 43, causing the movable element 412 to move along the extension direction of the movable channel 431. Figure 1 The leftward movement shown in the diagram compresses the spring 411, thereby overcoming the elastic force of the spring 411 and simultaneously moving the valve body 42 from the second connecting port 30 to the first connecting port 20.

[0044] It should be noted that, in this example, the movable channel 431 should have the aforementioned mounting portion at one end of its extension direction, and a cavity connection port connecting to the outside at the other end of its extension direction. At the same time, the cross-sectional size of the movable channel 431 perpendicular to its extension direction should be consistent with the size of the cavity connection port, so that the cavity connection port remains closed during the movement of the movable member 412 along the extension direction of the movable channel 431. This ensures that the movable member 412 is always located inside the pressure regulating mounting cavity 43 on one side of the extension direction of the movable channel 431, and always located outside the pressure regulating mounting cavity 43 on the other side of the extension direction of the movable channel 431. In this example, the extension direction of the movable channel 431 should be the same as the arrangement direction of the first connecting port 20 and the second connecting port 30. This ensures that the direction in which the movable member 412 moves on the movable channel 431 is specifically the arrangement direction of the first connecting port 20 and the second connecting port 30. This ensures that the valve body 42 can move from the first connecting port 20 to the second connecting port 30, or from the second connecting port 30 to the first connecting port 20, driven by the movement of the movable member 412 along the extension direction of the movable channel 431. Preferably, the movable member 412 can be slidably connected to the movable channel 431 on both sides perpendicular to the extension direction of the movable channel 431, allowing the movable member 412 to slide freely relative to the movable channel 431 along its extension direction.

[0045] In some examples, such as Figure 1 and Figure 2 As shown, the pressure regulating mounting cavity 43 is provided with a movable channel 431. The elastic element 41 includes an elastic pad, a movable element 412, and a connecting element 413. The movable element 412 is movably installed in the movable channel 431 and is configured to move along the extension direction of the movable channel 431. The side of the movable element 412 located inside the pressure regulating mounting cavity 43 abuts or connects to the mounting part through the elastic pad. The side of the movable element 412 located outside the pressure regulating mounting cavity 43 is connected to the valve body 42 through the connecting element 413. Thus, with the above structural configuration, when the first connecting port 20 needs to be closed and the second connecting port 30 needs to be opened, the fluid pressure inside the pressure regulating mounting cavity 43 is made lower than the fluid pressure outside the pressure regulating mounting cavity 43. The pressure difference between the two then acts on the side of the movable element 412 located outside the pressure regulating mounting cavity 43, causing the movable element 412 to move along the extension direction of the movable channel 431. Figure 1 The left-side movement shown in the diagram squeezes the elastic pad to overcome its elastic force, while simultaneously moving the valve body 42 from the second connection port 30 to the first connection port 20.

[0046] It should be noted that the installation method and environment of the elastic pad in this example are basically the same as those of the spring 411 in the previous example, and will not be repeated here.

[0047] In some examples, such as Figure 1 and Figure 2 As shown, the pressure regulating mounting cavity 43 may specifically be equipped with a pressure regulating valve 432. The pressure regulating valve 432 is disposed on the cavity wall of the pressure regulating mounting cavity 43 to regulate the fluid pressure within the pressure regulating mounting cavity 43. Thus, with the above structural arrangement, when the first connecting port 20 needs to be closed and the second connecting port 30 needs to be opened, the opening and closing of the pressure regulating valve 432 can be controlled to regulate the fluid pressure within the pressure regulating mounting cavity 43, making the fluid pressure within the pressure regulating mounting cavity 43 lower than the fluid pressure outside the pressure regulating mounting cavity 43. The pressure difference between the two then acts on the side of the movable member 412 located outside the pressure regulating mounting cavity 43, causing the movable member 412 to extend along the extension direction of the movable channel 431 towards... Figure 1 The left-side movement shown in the diagram squeezes the elastic pad to overcome its elastic force, while simultaneously moving the valve body 42 from the second connection port 30 to the first connection port 20.

[0048] It should be noted that the pressure regulating valve 432 in this example can specifically be an exhaust valve or a drain valve. When it is specifically an exhaust valve, it can discharge the gas in the pressure regulating mounting cavity 43 to make the fluid pressure (i.e., air pressure) in the pressure regulating mounting cavity 43 lower than the fluid pressure outside the pressure regulating mounting cavity 43. When it is specifically a drain valve, it can discharge the liquid in the pressure regulating mounting cavity 43 to make the fluid pressure (i.e., hydraulic pressure) in the pressure regulating mounting cavity 43 lower than the fluid pressure outside the pressure regulating mounting cavity 43.

[0049] In some examples, such as Figure 1 and Figure 2 As shown, a first filling portion 421 is provided on the side of the valve body 42 facing the first connecting port 20, and the outer contour of the first filling portion 421 is adapted to the first connecting port 20. Thus, with the above structural arrangement, when the valve body 42 moves from the second connecting port 30 to the first connecting port 20 under the action of pressure difference, the first filling portion 421 can be adapted to fill the first connecting port 20, thereby achieving perfect coverage of the first connecting port 20 and ensuring the complete closure of the first connecting port 20.

[0050] It should be noted that in this example, the side of the first filling part 421 facing the first connecting port 20 can adopt an arc-shaped structure design along its periphery, so that the periphery contour of the first filling part 421 becomes smaller as it gets closer to the first connecting port 20. In this way, when the valve body 42 moves from the second connecting port 30 to the first connecting port 20 under the action of pressure difference, the first filling part 421 can fill into the first connecting port 20 more smoothly. Preferably, the first filling part 421 can be an elastic filling part. In this way, when the valve body 42 moves from the second connecting port 30 to the first connecting port 20 under the action of pressure difference, the first filling part 421 can fill into the first connecting port 20 more smoothly, while making the connection between the first filling part 421 and the first connecting port 20 tighter, thereby ensuring the complete closure of the first connecting port 20.

[0051] In some examples, such as Figure 1 and Figure 2 As shown, a second filling portion 422 is provided on the side of the valve body 42 facing the second communication port 30, and the outer contour of the second filling portion 422 is adapted to the second communication port 30. Thus, with the above structural arrangement, when the valve body 42 moves from the first communication port 20 to the second communication port 30 under the elastic force of the elastic member 41, the second filling portion 422 can fit and fill the second communication port 30, achieving perfect coverage of the second communication port 30 and ensuring complete closure of the second communication port 30.

[0052] It should be noted that in this example, the side of the second filling portion 422 facing the second connecting port 30 can adopt an arc-shaped structure design along its periphery, so that the periphery contour of the second filling portion 422 becomes smaller as it gets closer to the second connecting port 30. Thus, when the valve body 42 moves from the first connecting port 20 to the second connecting port 30 under the elastic force of the elastic member 41, the second filling portion 422 can fill into the second connecting port 30 more smoothly. Preferably, the second filling portion 422 can specifically be an elastic filling portion. Thus, when the valve body 42 moves from the first connecting port 20 to the second connecting port 30 under the elastic force of the elastic member 41, the second filling portion 422 can fill into the second connecting port 30 more smoothly, while simultaneously making the connection between the second filling portion 422 and the second connecting port 30 tighter, thereby ensuring the complete closure of the second connecting port 30.

[0053] In one embodiment, such as Figure 1 and Figure 2 As shown, this application also provides a soft water supply device, which includes the flow path switching system 1 of the above embodiment.

[0054] It should be noted that the soft water supply device in this embodiment can specifically be a soft water water heater or a soft water purifier. When it is specifically a soft water water heater, in addition to the hot water component of a conventional water heater, it also includes a soft water component. The soft water component is equipped with the flow path switching system 1 described in the above embodiment. The first flow path of the flow path switching system 1 is used for water softening, and the second flow path is used for salt absorption and promoting resin regeneration. The first flow path and the second flow path share a fluid inlet 10.

[0055] Thus, the soft water supply device provided in this application embodiment, when the first flow path (i.e. Figure 1 The water softening flow path indicated by the arrow passes through the resin tank 61, softening the incoming water before discharge. Simultaneously, some water flows through the Venturi structure 62 to the salt tank 63 to dissolve salt blocks and prepare brine. This flow path is connected to the fluid inlet 10 via the first connecting port 20. The second flow path (i.e....) Figure 2 The resin regeneration flow path indicated by the arrow passes through the Venturi structure 62, generating negative pressure that draws out the brine from the salt tank 63 through the Venturi structure 62 and flows to the resin tank 61 to achieve resin regeneration. When the flow path switching module 40 connects to the fluid inlet 10 through the second connecting port 30, the valve body 42 of the flow path switching module 40 can either open the first connecting port 20 and cover the second connecting port 30 to connect the flow path corresponding to the first connecting port 20 to the fluid inlet 10, or close the first connecting port 20 and open the second connecting port 30 to connect the flow path corresponding to the second connecting port 30 to the fluid inlet 10. In this way, the flow path switching module 40 can control the connection and closure, realizing the switching connection between the two flow paths (i.e., the first flow path and the second flow path) in this soft water supply device and the same fluid inlet 10. This significantly reduces the number of fluid inlets 10 in this soft water supply device, thereby reducing the structural complexity of the external piping of the soft water supply device and providing convenience for installation and maintenance personnel.

[0056] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A flow path switching system, characterized in that, The flow path switching system includes a fluid inlet, a first flow path, a second flow path, a first connecting port, a second connecting port, and a flow path switching module. The first flow path is connected to the fluid inlet through the first connecting port, and the second flow path is connected to the fluid inlet through the second connecting port. The flow path switching module includes an elastic element and a valve body. The valve body is elastically mounted on the mounting position through the elastic element, and the valve body is configured to move from the first connecting port to the second connecting port under the elastic force of the elastic element to open the first connecting port and cover the second connecting port, and to move from the second connecting port to the first connecting port under the action of an external force to open the second connecting port and cover the first connecting port.

2. The flow path switching system as described in claim 1, characterized in that, The elastic element includes a spring, one end of which is connected to the mounting portion and the other end of which is connected to the valve body; or, The elastic element includes a spring, one end of which abuts against the mounting portion, and the other end of which abuts against the valve body.

3. The flow path switching system as described in claim 1, characterized in that, The elastic element includes an elastic pad, one end of which is connected to the mounting portion, and the other end of which is connected to the valve body; or... The elastic element includes an elastic pad, one end of which abuts against the mounting portion, and the other end of which abuts against the valve body.

4. The flow path switching system as described in claim 1, characterized in that, The flow path switching module further includes a pressure regulating mounting cavity, the fluid pressure in the pressure regulating mounting cavity is configured to be adjustable, the mounting part is disposed in the pressure regulating mounting cavity, and the valve body is further configured to move from the second communication port to the first communication port under the pressure difference force formed when the fluid pressure in the pressure regulating mounting cavity is less than the fluid pressure outside the pressure regulating mounting cavity, so as to open the second communication port and cover the first communication port.

5. The flow path switching system as described in claim 4, characterized in that, The pressure regulating mounting cavity is provided with a movable channel. The elastic element includes a spring, a movable element, and a connecting element. The movable element is movably installed in the movable channel and is configured to move along the extension direction of the movable channel. The side of the movable element located inside the pressure regulating mounting cavity abuts or connects to the mounting part through the spring. The side of the movable element located outside the pressure regulating mounting cavity is connected to the valve body through the connecting element.

6. The flow path switching system as described in claim 4, characterized in that, The pressure regulating mounting cavity is provided with a movable channel. The elastic element includes an elastic pad, a movable element, and a connecting element. The movable element is movably installed in the movable channel and is configured to move along the extension direction of the movable channel. The side of the movable element located inside the pressure regulating mounting cavity abuts or connects to the mounting part through the elastic pad. The side of the movable element located outside the pressure regulating mounting cavity is connected to the valve body through the connecting element.

7. The flow path switching system as described in claim 4, characterized in that, The pressure regulating installation cavity is equipped with a pressure regulating valve, which is located on the cavity wall of the pressure regulating installation cavity to regulate the fluid pressure inside the pressure regulating installation cavity.

8. The flow path switching system according to any one of claims 1-7, characterized in that, The valve body has a first filling part on the side facing the first communication port, and the outer contour of the first filling part is adapted to the first communication port.

9. The flow path switching system according to any one of claims 1-7, characterized in that, The valve body has a second filling part on the side facing the second communication port, and the outer contour of the second filling part is adapted to the second communication port.

10. A soft water supply device, characterized in that, The soft water supply device includes the flow path switching system as described in any one of claims 1-9.

Images