Three-way switching valve and water outlet valve

Abstract

The utility model discloses a three-way switching valve and a water outlet valve, and relates to the technical field of valves. The three-way switching valve comprises a main valve body, a supporting frame, a valve element assembly and a driving assembly, the central axis of the main valve body coincides with the central axis of the supporting frame, a mounting groove and a first guide hole are formed in the main valve body, a second guide hole is formed in the supporting frame, and the central connecting line of the first guide hole and the second guide hole coincides with the central axis; the valve element assembly is arranged in the supporting frame and comprises a valve rod, and the valve rod penetrates through the first guide hole and the second guide hole and is guided and limited by the first guide hole and the second guide hole; the driving assembly is arranged in the mounting groove, the output end of the driving assembly is in transmission connection with the valve rod, and the driving assembly is configured to drive the valve rod to reciprocate in the direction of the central axis. According to the three-way switching valve, the precision of the valve rod during moving can be improved, the sealing effect of the switching sealing mechanism is guaranteed, and leakage is avoided.

Description

Technical Field

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

[0002] A three-way switching valve generally includes a valve body and a valve core located inside the valve body. The valve body has an inlet and two outlets. After the valve core acts, one of the outlets can be closed, so that the fluid is discharged through the other outlet.

[0003] Generally speaking, the valve core includes a valve stem and a seal arranged on the valve stem. The valve stem moves to make the seal seal one of the outlets, thereby changing the flow path of the liquid in the valve body. However, in the existing three-way switching valves, generally a guiding structure of the valve stem is arranged at one end of the valve body close to the driving mechanism, so that there is only unilateral guiding between the valve stem and the valve body, which easily causes the end of the valve stem far from the driving mechanism to have a radial offset, resulting in the seal not being in place and there being a risk of leakage. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a three-way switching valve and a water outlet valve, which can improve the accuracy when the valve stem moves, ensure the sealing effect of the switching and sealing mechanism, and avoid leakage.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A three-way switching valve, comprising:

[0007] A main valve body and a support frame, the central axes of the main valve body and the support frame coincide. An installation groove and a first guiding hole are arranged on the main valve body, a second guiding hole is arranged on the support frame, and the central connection line of the first guiding hole and the second guiding hole coincides with the central axis;

[0008] A valve core assembly is arranged in the support frame. The valve core assembly includes a valve stem, and the valve stem passes through the first guiding hole and the second guiding hole and is guided and limited by the first guiding hole and the second guiding hole;

[0009] A driving assembly is arranged in the installation groove, the output end of the driving assembly is in transmission connection with the valve stem, and the driving assembly is configured to drive the valve stem to reciprocate along the central axis direction.

[0010] As an optional solution of the above three-way switching valve, the driving assembly includes a driving shaft, the driving shaft is in floating connection with the valve stem, and after the driving shaft is connected to the valve stem, the main valve body, the support frame, the valve core assembly and the driving assembly can form an integral structure.

[0011] As an alternative to the above three-way switching valve, the drive shaft is provided with a drive groove extending in the radial direction of the drive shaft. The inner wall of the drive groove is provided with a rotation groove axially penetrating through the end face of the drive shaft. The end of the valve stem is connected with a connecting portion. The valve stem is rotatably arranged in the rotation groove. When the drive shaft rotates, a part of the connecting portion is arranged in the drive groove so that the valve stem and the drive shaft move synchronously in the axial direction.

[0012] As an alternative to the above three-way switching valve, the rotation groove axially penetrates through the side wall of the drive shaft in the radial direction of the drive shaft.

[0013] As an alternative to the above three-way switching valve, the three-way switching valve further includes a clamping member. A fixed flange is convexly provided on the outer periphery of the drive assembly. The clamping member penetrates through the main valve body and presses the fixed flange against the installation groove.

[0014] As an alternative to the above three-way switching valve, an upper valve cavity and a lower valve cavity are arranged in the support frame. A first switching and communicating valve port is arranged between the upper valve cavity and the lower valve cavity. A second switching and communicating valve port is arranged at the bottom of the lower valve cavity. A guiding support is arranged in the lower valve cavity. The second guiding hole is arranged on the guiding support. The valve core assembly further includes a switching and sealing mechanism arranged on the valve stem. The switching and sealing mechanism is used to switch and seal the first switching and communicating valve port or the second switching and communicating valve port. Driven by the drive assembly for the valve stem, the switching and sealing mechanism can switch between sealing the first switching and communicating valve port and sealing the second switching and communicating valve port.

[0015] As an alternative to the above three-way switching valve, the valve stem includes a sliding section. The sliding section is slidably matched with the guiding support. The diameter of the rest position of the valve stem is less than or equal to the diameter of the sliding section.

[0016] As an alternative to the above three-way switching valve, the switching and sealing mechanism includes two sealing plugs. The valve stem is provided with snap rings on the opposite sides of each sealing plug along the axial direction of the valve stem. The snap rings are detachably connected to the valve stem to axially limit the sealing plugs.

[0017] As an alternative to the above three-way switching valve, the sealing plug includes a fixed seat and a sealing ring. The fixed seat is provided with an annular groove in the circumferential direction. The sealing ring is arranged in the annular groove. The sealing ring elastically abuts against the inner wall of the lower valve cavity to block the first switching and communicating valve port or the second switching and communicating valve port.

[0018] As an alternative to the above three-way switching valve, the diameter of the lower valve cavity is smaller than that of the upper valve cavity. The sealing plug includes two baffles arranged at intervals, and an annular groove is formed between the two baffles. The diameter of the baffle away from the lower valve cavity is larger than that of the lower valve cavity, and the diameter of the baffle close to the lower valve cavity is smaller than that of the lower valve cavity.

[0019] As an alternative to the above three-way switching valve, a anti-fooling boss protrudes from the inner wall of the installation groove. The driving assembly further includes a driving body, and an anti-fooling groove is formed in the side wall of the driving body. The anti-fooling boss is arranged in the anti-fooling groove.

[0020] A water outlet valve includes the above three-way switching valve. The water outlet valve is provided with a liquid inlet, a first liquid outlet and a second liquid outlet. The three-way switching valve can selectively connect the liquid inlet with the first liquid outlet or the second liquid outlet.

[0021] The beneficial effects of the present utility model:

[0022] The present utility model provides a three-way switching valve and a water outlet valve. In this three-way switching valve, the main valve body is provided with a first guiding hole, and the support frame is provided with a second guiding hole. Both the first guiding hole and the second guiding hole can guide the valve stem. Therefore, the valve stem and the support structure are bilaterally guided, which can ensure that the valve stem can only move along the axial direction of the support structure when moving in the support structure, and will not produce radial deviation.

[0023] This three-way switching valve can improve the accuracy of the valve stem movement, ensure the sealing effect of the switching sealing mechanism, and avoid leakage. Description of the drawings

[0024] Figure 1 is a schematic structural diagram of the three-way switching valve provided by the present utility model;

[0025] Figure 2 is a schematic structural diagram of the three-way switching valve provided by the present utility model after removing the driving assembly;

[0026] Figure 3 is a first sectional view of the three-way switching valve provided by the present utility model;

[0027] Figure 4 is a schematic structural diagram of the valve core assembly provided by the present utility model;

[0028] Figure 5 is a schematic structural diagram of the driving assembly provided by the present utility model;

[0029] Figure 6 is a second sectional view of the three-way switching valve provided by the present utility model.

[0030] In the figure:

[0031] 1. Support structure; 11. Installation groove; 12. Upper valve cavity; 13. Lower valve cavity; 14. First switching and communicating valve port; 15. Second switching and communicating valve port; 16. Guide bracket; 17. Anti-fooling boss; 18. Snap; 191. Main valve body; 192. Support frame;

[0032] 2. Spool assembly; 21. Valve stem; 211. Sliding section; 212. Connection part; 22. Sealing plug; 221. Fixed seat; 2211. Baffle; 222. Sealing ring; 23. Snap ring;

[0033] 3. Driving assembly; 31. Driving body; 311. Fixed flange; 312. Anti-fooling groove; 32. Driving shaft; 321. Driving groove; 322. Rotating groove;

[0034] 4. Clamping part; 41. Connecting rod; 42. Clamping rod. Detailed implementation mode

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0037] Unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0039] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0040] This embodiment provides a water outlet valve for controlling the flow direction of hot water in a water heater. The water outlet valve includes a three-way switching valve cavity and a three-way switching valve. The three-way switching valve is disposed in the three-way switching valve cavity. The water outlet valve is provided with a liquid inlet, a first liquid outlet and a second liquid outlet. Among them, the three-way switching valve can selectively communicate the liquid inlet with the first liquid outlet or with the second liquid outlet. The first water port is connected to the water heater, one of the second water port and the third water port is connected to the bathing pipe, and the other of the second water port and the third water port is connected to the hot water pipe. The bathing pipe is connected to a shower head for bathing, and the hot water pipe can be connected to a heating pipe or a water pipe for washing vegetables or hands.

[0041] As Figures 1 to 3 shown, the three-way switching valve provided in this embodiment includes a support structure 1 and a valve core assembly 2. The support structure 1 is sequentially provided with a mounting groove 11, an upper valve cavity 12 and a lower valve cavity 13 along the axial direction. A first switching communication valve port 14 is provided between the upper valve cavity 12 and the lower valve cavity 13. A second switching communication valve port 15 is provided at the bottom of the lower valve cavity 13. The valve core assembly 2 includes a valve rod 21 and a switching sealing mechanism disposed on the valve rod 21. The switching sealing mechanism is used to switch and seal the first switching communication valve port 14 or the second switching communication valve port 15.

[0042] The support structure 1 is installed in the three-way switching valve cavity of the water outlet valve. Among them, the liquid inlet is communicated with the lower valve cavity 13, the first liquid outlet is communicated with the upper valve cavity 12, and the second liquid outlet is communicated with the second switching communication valve port 15. Therefore, the three-way switching valve has two channels. One channel is that the liquid enters the lower valve cavity 13 from the liquid inlet, and then sequentially flows out from the first liquid outlet through the first switching communication valve port 14 and the upper valve cavity 12. The other channel is that the liquid enters the lower valve cavity 13 from the liquid inlet, and then flows out from the second liquid outlet through the second switching communication valve port 15.

[0043] In order to achieve passage switching, the three-way switching valve further includes a driving assembly 3 disposed in the installation groove 11. The output end of the driving assembly 3 is in transmission connection with the valve stem 21. The driving assembly 3 is configured to drive the valve stem 21 to reciprocate axially along the support structure 1, so that the switching sealing mechanism can switch between sealing the first switching communication valve port 14 and sealing the second switching communication valve port 15.

[0044] When the valve stem 21 moves to block the first switching communication valve port 14 by the switching sealing mechanism, the liquid flows out from the second liquid outlet. When the valve stem 21 moves to block the second switching communication valve port 15 by the switching sealing mechanism, the liquid flows out from the first liquid outlet, thereby achieving passage switching.

[0045] Generally, a guiding structure is provided at one end of the valve stem 21 close to the driving assembly 3. In some embodiments, the valve stem 21 is fixed to the driving assembly 3, and the valve stem 21 can only rotate along with the drive of the driving assembly 3, which is equivalent to providing a guiding structure. In some embodiments, the support structure 1 is provided with a first guiding hole between the installation groove 11 and the upper valve cavity 12, and the valve stem 21 passes through the first guiding hole to extend into the upper valve cavity 12 and the lower valve cavity 13. The support structure 1 guides the valve stem 21 through the first guiding hole.

[0046] As Figures 1 to 3 shown, to further improve the accuracy of the position of the valve stem 21 during movement, the support structure 1 is further provided with a second guiding hole. The central connection line of the first guiding hole and the second guiding hole coincides with the central axis of the support structure 1. The valve stem 21 passes through the first guiding hole and the second guiding hole and is guided and limited by the first guiding hole and the second guiding hole.

[0047] That is to say, not only can the first guiding hole guide the valve stem 21, but the second guiding hole can also guide the valve stem 21. Therefore, the valve stem 21 and the support structure 1 are bilaterally guided, ensuring that the valve stem 21 can only move axially along the support structure 1 during movement within the support structure 1 without radial deviation, thereby ensuring the sealing effect of the switching sealing mechanism and avoiding leakage.

[0048] As Figure 3 shown, for the convenience of assembly, the support structure 1 includes a main valve body 191 and a support frame 192, and the central axes of the main valve body 191 and the support frame 192 coincide. This central axis is the central axis of the support structure 1. The main valve body 191 and the support frame 192 are detachably connected. The operator can first assemble the valve core assembly 2 with the support frame 192, and then assemble the main valve body 191 with the support frame 192 to facilitate the assembly of the three-way switching valve. Among them, the installation groove 11 and the first guiding hole are provided in the main valve body 191, and the upper valve cavity 12, the lower valve cavity 13 and the second guiding hole are provided in the support frame 192.

[0049] For ease of description, in this embodiment, the three-way switching valve is vertically placed, and along the direction from top to bottom, the installation groove 11, the upper valve cavity 12, and the lower valve cavity 13 are arranged in sequence. Among them, a guiding support 16 is arranged in the lower valve cavity 13, and the second guiding hole is arranged on the guiding support 16.

[0050] As Figure 3 and Figure 4 shown, the valve stem 21 includes a sliding section 211, and the sliding section 211 is in sliding fit with the guiding support 16. The diameters of the other positions of the valve stem 21 are equal to the diameter of the sliding section 211. This structure enables the valve stem 21 to directly pass through the guiding support 16. When assembling the three-way switching valve, the valve stem 21 can be inserted from any end of the support frame 192 as required, which is convenient for the installation of the valve stem 21. Moreover, when the valve stem 21 is connected to the driving assembly 3, within the stroke of the valve stem 21, the sliding section 211 is always in sliding fit with the guiding support 16.

[0051] In some embodiments, the diameters of the other positions of the valve stem 21 are smaller than the diameter of the sliding section 211. This structure facilitates the valve stem 21 to pass through the guiding support 16 and can also ensure the guiding fit between the valve stem 21 and the guiding support 16.

[0052] As Figure 3 and Figure 4 shown, the switching sealing mechanism includes two sealing plugs 22. On the opposite sides of each sealing plug 22 along the axial direction of the valve stem 21, snap rings 23 are arranged. The snap rings 23 are detachably connected to the valve stem 21 to axially limit the sealing plugs 22. Using the snap rings 23 to fix the positions of the sealing plugs 22 on the valve stem 21 is convenient for assembly and disassembly. Moreover, when the valve stem 21 is installed on the support frame 192, it is convenient for the valve stem 21 to pass through the guiding support 16, avoiding the interference between the valve stem 21 and the guiding support 16 caused by the convex fixing structure on the side wall of the valve stem 21.

[0053] As Figure 3 and Figure 4As shown, the sealing plug 22 includes a fixing seat 221 and a sealing ring 222. The fixing seat 221 is provided with an annular groove in the circumferential direction. The sealing ring 222 is arranged in the annular groove, and the sealing ring 222 elastically abuts against the inner wall of the lower valve cavity 13 to block the first switching communication valve port 14 or the second switching communication valve port 15. The sealing plug 22 enters the lower valve cavity 13 through the first switching communication valve port 14 or the second switching communication valve port 15 and forms a sealing structure with the inner wall of the lower valve cavity 13. That is to say, the direction of the force exerted by the fixing seat 221 on the inner wall of the lower valve cavity 13 to squeeze the sealing ring 222 is along the radial direction of the support frame 192. That is to say, the sealing pressure of the sealing plug 22 is not provided by the driving assembly 3. After the driving assembly 3 drives the sealing plug 22 into the lower valve cavity 13, the driving assembly 3 can no longer apply a force to the sealing plug 22, reducing energy consumption and improving the reliability of the seal. The annular groove can position the sealing ring 222, so that when the sealing plug 22 passes through the first switching communication valve port 14 or the second switching communication valve port 15, the sealing ring 222 will not move, ensuring the sealing performance.

[0054] Further, the diameter of the lower valve cavity 13 is smaller than the diameter of the upper valve cavity 12. The two sealing plugs 22 are respectively located at both ends of the lower valve cavity 13 along the axial direction of the support frame 192. When the valve stem 21 moves downward, the sealing plug 22 located above the lower valve cavity 13 blocks the first switching communication valve port 14. When the valve stem 21 moves upward, the sealing plug 22 located below the lower valve cavity 13 blocks the second switching communication valve port 15.

[0055] Specifically, the sealing plug 22 includes two baffles 2211 arranged at intervals. An annular groove is formed between the two baffles 2211. The diameter of the baffle 2211 far from the lower valve cavity 13 is larger than the diameter of the lower valve cavity 13, and the diameter of the baffle 2211 close to the lower valve cavity 13 is smaller than the diameter of the lower valve cavity 13. When the sealing plug 22 moves towards the lower valve cavity 13, the baffle 2211 close to the lower valve cavity 13 passes through the first switching communication valve port 14 or the second switching communication valve port 15, and then the sealing ring 222 enters the lower valve cavity 13. Finally, the baffle 2211 far from the lower valve cavity 13 abuts against the edge of the first switching communication valve port 14 or the second switching communication valve port 15 to achieve positioning, ensuring the stability of the sealing plug 22 when blocking the first switching communication valve port 14 or the second switching communication valve port 15.

[0056] As Figure 3 and Figure 5 shown, the driving assembly 3 includes a driving body 31 and a driving shaft 32. The driving shaft 32 is rotatably arranged on the driving body 31 and is threadedly connected to the driving body 31. The driving shaft 32 is floatingly connected to the valve stem 21. When the driving shaft 32 rotates, since the driving shaft 32 is threadedly connected to the driving body 31, the driving shaft 32 can move axially at the same time, thereby driving the valve stem 21 to move axially. And since the valve stem 21 is floatingly connected to the driving shaft 32, the valve stem 21 will not rotate therewith.

[0057] It should be noted that after the drive shaft 32 is connected to the valve stem 21, the main valve body 191, the support frame 192, the valve core assembly 2 and the drive assembly 3 can form an integral structure.

[0058] As Figure 5 shown, the drive shaft 32 is provided with a drive groove 321 extending in the radial direction of the drive shaft 32. The inner wall of the drive groove 321 is provided with a rotation groove 322 axially penetrating to the end face of the drive shaft 32. The end of the valve stem 21 is connected with a connecting portion 212. The valve stem 21 is rotatably arranged in the rotation groove 322. When the drive shaft 32 rotates, a part of the connecting portion 212 is arranged in the drive groove 321 so that the valve stem 21 and the drive shaft 32 move synchronously in the axial direction.

[0059] The valve stem 21 is rotatably connected to the drive shaft 32 through the rotation groove 322. At the same time, since a part of the connecting portion 212 is arranged in the drive groove 321, when the drive shaft 32 rotates, the connecting portion 212 and the drive groove 321 rotate relative to each other. At the same time, when the drive shaft 32 moves axially, the drive groove 321 can drive the valve stem 21 to move synchronously in the axial direction through the connecting portion 212. In this embodiment, the connecting portion 212 is a sphere to ensure that when the drive shaft 32 rotates, part of the sphere is always located in the drive groove 321, thereby ensuring the axial connection between the valve stem 21 and the drive shaft 32.

[0060] Furthermore, the rotation groove 322 axially penetrates to the side wall of the drive shaft 32. With this structure, it is convenient to assemble the valve stem 21 and the drive shaft 32. It only needs to move the connecting portion 212 of the valve stem 21 into the rotation groove 322 from the side wall of the drive shaft 32 along the direction of the rotation groove 322.

[0061] In this embodiment, the drive assembly 3 includes a stepping motor. The stepping motor has high reliability, long service life and high precision, and can accurately control the number of rotation turns and the angle of the drive shaft 32, thereby improving the accuracy of the position of the valve stem 21.

[0062] As Figures 1 to 3 shown, the three-way switching valve further includes a clamping member 4. The outer periphery of the drive body 31 is convexly provided with a fixed flange 311. The clamping member 4 passes through the support frame 192 and presses the fixed flange 311 against the installation groove 11. Using the clamping member 4 to press the drive body 31 against the installation groove 11 simplifies the structure, greatly reduces the material cost, and is convenient for disassembly and assembly.

[0063] Specifically, the clamping member 4 includes a connecting rod 41 and two clamping rods 42 arranged in parallel. Both clamping rods 42 are fixedly connected to the connecting rod 41. The two clamping rods 42 pass through the main valve body 191 and are located on both sides of the driving body 31. Both clamping rods 42 are in contact with the fixed flange 311 to lock the driving body 31 in the installation groove 11, improving the stability of the driving body 31.

[0064] As Figures 1 to 3 shown, a buckle 18 is provided on the main valve body 191. The buckle 18 is clamped and fixed to the connecting rod 41 to fix the clamping member 4 and prevent the clamping member 4 from disengaging, which may affect the stability of the driving assembly 3 in the installation groove 11.

[0065] Under normal circumstances, the driving assembly 3 is a centrally symmetric structure. When the driving assembly 3 is placed into the installation groove 11, the operator needs to check the installation angle to ensure that the orientations of the sockets of the driving assembly 3 are consistent, which is convenient for the insertion of the wire harness. As Figure 2 and Figure 5 shown, to achieve the above purpose, an anti-fooling boss 17 is convexly provided on the inner wall of the installation groove 11, and an anti-fooling groove 312 is formed on the side wall of the driving body 31. The anti-fooling boss 17 is arranged in the anti-fooling groove 312. The anti-fooling boss 17 and the anti-fooling groove 312 can play an anti-fooling role. When the installation angle of the driving assembly 3 is incorrect, the driving assembly 3 cannot completely enter the installation groove 11, reminding the operator to check the installation angle and ensuring the unified connection direction of the wire harness.

[0066] As Figure 6 shown, in some embodiments, the support structure 1 is an integral structure. This kind of structure has high strength and high processing efficiency, and can effectively reduce the manufacturing cost of the three-way switching valve. Moreover, in this kind of structure, the installation groove 11 and the upper valve cavity 12 are communicated. The sealing plug 22 located in the upper valve cavity 12 can enter the upper valve cavity 12 through the installation groove 11, which is convenient for the assembly of the three-way switching valve.

[0067] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A three-way switching valve, characterized in that, Including: A main valve body (191) and a support frame (192), the central axes of the main valve body (191) and the support frame (192) coincide. An installation groove (11) and a first guide hole are provided on the main valve body (191), a second guide hole is provided on the support frame (192), and the central connection line of the first guide hole and the second guide hole coincides with the central axis; A valve core assembly (2) is arranged in the support frame (192). The valve core assembly (2) includes a valve rod (21). The valve rod (21) passes through the first guide hole and the second guide hole and is guided and limited by the first guide hole and the second guide hole; A driving assembly (3) is arranged in the installation groove (11). The output end of the driving assembly (3) is in transmission connection with the valve rod (21), and the driving assembly (3) is configured to drive the valve rod (21) to reciprocate along the central axis direction.

2. The three-way switching valve according to claim 1, wherein, The driving assembly (3) includes a driving shaft (32). The driving shaft (32) is floatingly connected to the valve rod (21). After the driving shaft (32) is connected to the valve rod (21), the main valve body (191), the support frame (192), the valve core assembly (2) and the driving assembly (3) can form an integral structure.

3. The three-way switching valve according to claim 2, characterized in that, The driving shaft (32) is provided with a driving groove (321) extending radially along the driving shaft (32). The inner wall of the driving groove (321) is provided with a rotating groove (322) axially penetrating through the end face of the driving shaft (32). The end of the valve rod (21) is connected with a connecting portion (212). The valve rod (21) is rotatably arranged in the rotating groove (322). When the driving shaft (32) rotates, a part of the connecting portion (212) is arranged in the driving groove (321) so that the valve rod (21) and the driving shaft (32) move synchronously along the axis.

4. The three-way switching valve according to claim 3, characterized in that, The rotating groove (322) penetrates radially through the side wall of the driving shaft (32).

5. The three-way switching valve according to claim 4, wherein, The three-way switching valve further includes a clamping member (4). A fixed flange (311) is convexly provided on the outer periphery of the driving assembly (3). The clamping member (4) penetrates through the main valve body (191) and presses the fixed flange (311) in the installation groove (11).

6. The three-way switching valve according to any one of claims 1 to 5, characterized in that, An upper valve cavity (12) and a lower valve cavity (13) are arranged inside the support frame (192). A first switching communication valve port (14) is arranged between the upper valve cavity (12) and the lower valve cavity (13). A second switching communication valve port (15) is arranged at the bottom of the lower valve cavity (13). A guiding support (16) is arranged inside the lower valve cavity (13). The second guiding hole is arranged on the guiding support (16). The valve core assembly (2) further includes a switching sealing mechanism arranged on the valve rod (21). The switching sealing mechanism is used to switch and seal the first switching communication valve port (14) or the second switching communication valve port (15). Driven by the driving component (3) for the valve rod (21), the switching sealing mechanism can switch between sealing the first switching communication valve port (14) and sealing the second switching communication valve port (15).

7. The three-way switching valve according to claim 6, characterized in that, The valve rod (21) includes a sliding section (211). The sliding section (211) is in sliding fit with the guiding support (16). The diameter of the remaining positions of the valve rod (21) is less than or equal to the diameter of the sliding section (211).

8. The three-way switching valve according to claim 6, wherein The switching sealing mechanism includes two sealing plugs (22). The valve rod (21) is provided with snap rings (23) on the relative two sides of each sealing plug (22) along the axial direction of the valve rod (21). The snap rings (23) are detachably connected to the valve rod (21) to axially limit the sealing plugs (22).

9. The three-way switching valve according to claim 8, characterized in that, The sealing plug (22) includes a fixed seat (221) and a sealing ring (222). The fixed seat (221) is provided with an annular groove in the circumferential direction. The sealing ring (222) is arranged in the annular groove. The sealing ring (222) elastically abuts against the inner wall of the lower valve cavity (13) to block the first switching communication valve port (14) or the second switching communication valve port (15).

10. The three-way switching valve according to claim 9, characterized in that, The diameter of the lower valve cavity (13) is smaller than the diameter of the upper valve cavity (12). The sealing plug (22) includes two baffle plates (2211) arranged at intervals. An annular groove is formed between the two baffle plates (2211). The diameter of the baffle plate (2211) far from the lower valve cavity (13) is larger than the diameter of the lower valve cavity (13). The diameter of the baffle plate (2211) close to the lower valve cavity (13) is smaller than the diameter of the lower valve cavity (13).

11. The three-way switching valve according to any one of claims 1 to 5, characterized in that, An anti-fooling boss (17) protrudes from the inner wall of the installation groove (11). The driving component (3) further includes a driving body (31). An anti-fooling groove (312) is formed in the side wall of the driving body (31). The anti-fooling boss (17) is arranged in the anti-fooling groove (312).

12. A water outlet valve, characterized in that, Including the three-way switching valve according to any one of claims 1 to 11, the water outlet valve is provided with a liquid inlet, a first liquid outlet, and a second liquid outlet. The three-way switching valve can selectively communicate the liquid inlet with the first liquid outlet or the second liquid outlet.

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