A two-way three-way valve

Abstract

The present invention discloses a two-way three-way valve, which relates to the technical field of three-way valves, and includes a valve top cover, a valve body and a valve bottom cover that can be assembled and installed, the valve bottom cover includes a water inlet, the valve body includes two diversion pipes connected to an inner cavity, the two diversion pipes are located at one end of the inner cavity and are integrated with an intermediate block, and the intermediate block is provided with two communication ports respectively connected to the diversion pipes, and also includes: a sealing cover, the sealing cover is fixedly installed between the valve top cover and the valve body, and the sealing cover includes a soft part and a hard part, a first spring is installed between the hard part and the inner wall of the valve top cover; a locking assembly, when the hard part closes the two communication ports of the diversion pipe on the intermediate block, the locking assembly locks the position of the hard part and keeps it in a closed state. The present invention avoids the phenomenon that water in the valve body will flow back to the water inlet with low water pressure during the merging process through the coordination between the structures.

Description

Technical Field

[0001] The present invention relates to the technical field of three-way valves, in particular to a two-way three-way valve. Background Art

[0002] The three-way valve in the prior art is as follows Figure 1-2 As shown in the figure, its structural principle is as follows: After water enters the water inlet end of the valve bottom cover, the water pressure pushes open the sealing diaphragm held tight by the spring, and then flows into the two water outlets on both sides of the valve body. When there is no water pressure at the water inlet end of the valve bottom cover, the elastic force of the spring automatically tightens the sealing diaphragm, blocking the flow hole of the valve body and stopping the two water outlets, thus realizing the diversion function of the three-way valve.

[0003] However, when this structure is used for merging, that is, the water outlet and the water inlet are changed, and water enters from two water inlets and flows out from one water outlet, the water pressure of the two water inlets will push open the sealing diaphragm tightened by the spring, and then flow into the valve body and out from one water outlet, completing the merging process. However, if the water pressure difference between the two water inlets is too large and the water outlet of one valve body cannot release the pressure in time, the water in the valve body will flow back to the water inlet with low water pressure, making it difficult to achieve the merging process. Summary of the Invention

[0004] The object of the present invention is to provide a two-way three-way valve to solve at least one technical problem existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a two-way three-way valve, comprising a valve top cover, a valve body, and a valve bottom cover that can be assembled and installed together, the valve bottom cover including a water inlet, the valve body including two diverter pipes communicating with an inner cavity, the two diverter pipes being integrally provided with an intermediate block at one end of the inner cavity, and the intermediate block having two communication ports respectively communicating with the diverter pipes, and further comprising:

[0006] A sealing cover, the sealing cover is fixedly installed between the valve top cover and the valve body, and the sealing cover includes a soft part and a hard part, and a first spring is installed between the hard part and the inner wall of the valve top cover;

[0007] The locking assembly locks the position of the hard part and keeps it in a closed state when the hard part closes the two connecting ports of the diversion pipe on the middle block. When the water pressure value when water enters the two diversion pipes exceeds the preset value and the difference is within the preset range, the locking assembly releases the locking state of the hard part.

[0008] Preferably, the locking assembly includes an adjusting rod mounted on the top of the intermediate block and capable of rotational adjustment, one end of the adjusting rod extending outside the valve top cover, and a through hole for the adjusting rod to pass through is provided inside the hard portion;

[0009] It also includes two mounting cavities opened at the bottom of the hard part, and two mounting holes respectively connected to the two mounting cavities are opened inside the hard part, and the two mounting holes are slidably installed with an insertion rod whose sliding is controlled by the water pressure in the shunt pipe, and the outer wall of the adjusting rod is provided with two locking grooves for the insertion of the insertion rod.

[0010] Preferably, two piston plates are slidably installed in the installation cavity, and the two piston plates are fixedly connected by a rack. The inner wall of the installation cavity is also rotatably installed with a gear that meshes with the rack. The outer wall of the end of the insertion rod extending into the installation cavity is provided with a tooth groove, and the tooth groove is engaged with the gear. A second spring is installed between the piston plate away from the diversion pipe and the inner wall of the installation cavity.

[0011] Preferably, the locking groove is configured as a gradual groove, and forms a gradual transition with the arc-surface outer wall of the adjusting rod.

[0012] Preferably, sealing rings are installed at the two communication ports of the hard portion located on the middle block, and the diameter of the sealing rings is larger than the inner diameter of the communication ports.

[0013] Preferably, a flow limiting component is further included. When water flows outward from the two diversion pipes, the flow limiting component makes the water output of the two diversion pipes consistent.

[0014] Preferably, the flow limiting assembly includes a first column and a second column slidably mounted on the inner wall of the diversion pipe, the first column and the second column are rotatably connected, and the first column and the second column are each provided with correspondingly connected water holes;

[0015] The flow limiting assembly also includes a water groove opened on the inner wall of the diversion pipe, a hollow plate is fixed to the outer wall of the second column, and the second column is slidably connected to the water groove through the hollow plate, and a third spring is installed between the hollow plate and the inner wall of the water groove. When water enters the diversion pipe, the water pressure pushes the first column and the second column to move, so that the water groove opens and connects the diversion pipe.

[0016] Preferably, the middle block is provided with a hole at the position of the connecting port of the shunt pipe, and two pull ropes are fixed to the outer wall of the adjustment rod, and the two pull ropes are respectively fixed to the two second columns;

[0017] Two pin blocks are fixed on the inner wall of the diversion pipe, a first slide groove is provided on the outer wall of the first column, and the first slide groove is a straight groove, one of the pin blocks is inserted into and slidably connected to the first slide groove, a second slide groove is provided on the outer wall of the second column, the other pin block is inserted into and slidably connected to the second slide groove, and the second slide groove includes a straight groove and a spiral groove that are interconnected.

[0018] Preferably, the flow limiting assembly includes an external pipe detachably mounted on the outside of the shunt pipe, a flow limiter is mounted in the external pipe, and a water flow hole is provided in the flow limiter.

[0019] Preferably, the length of the first chute is greater than the length of the straight chute portion of the second chute.

[0020] Preferably, the outside of the adjusting rod is provided with two arc grooves for the pull rope to be embedded in.

[0021] Preferably, a sealing ring is further installed on the outer wall of the first column.

[0022] Preferably, the sealing ring is made of PETT.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention avoids the phenomenon that water in the valve body will flow back to the water inlet with lower water pressure due to excessive difference in water pressure between the two water inlets during the merging process through the coordination between the structures.

[0025] 2. Through the coordination between the structures, the present invention can switch the overall three-way valve between diversion and confluence according to the actual usage scenario, thereby adapting to more usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 - Figure 2 It is a structural diagram of the prior art;

[0027] Figure 3 It is a cross-sectional view and a partial enlarged view of the valve body of the present invention;

[0028] Figure 4 It is a partially enlarged three-dimensional view of the adjusting rod of the present invention;

[0029] Figure 5 is a sectional perspective view of the adjusting rod of the present invention;

[0030] Figure 6 is a cross-sectional view of the adjusting rod of the present invention;

[0031] Figure 7 - Figure 8 An enlarged perspective view of the first column and the second column of the present invention;

[0032] Figure 9 It is a sectional perspective view of the first column and the second column of the present invention;

[0033] Figure 10 This is a schematic structural diagram of the current limiting component in the second embodiment of the present invention.

[0034] In the figure: 1. Valve top cover; 2. First spring; 3. Sealing cover; 3a. Soft part; 3b. Hard part; 4. Valve body; 5. Diverter pipe; 6. Intermediate block; 7. Valve bottom cover; 8. Adjusting rod; 9. Mounting cavity; 10. Piston plate; 11. Rack; 12. Gear; 13. Insert rod; 14. Second spring; 15. Locking groove; 16. Water channel; 17. First column; 18. Second column; 19. Carved plate; 20. Third spring; 21. Water hole; 22. Pin block; 23. First slide groove; 24. Second slide groove; 25. Pull rope; 26. External pipe; 27. Flow limiter; 28. Water hole; 29. ​​Sealing ring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0036] See also Figures 1 to 9 The present invention provides a technical solution: a two-way three-way valve, comprising a valve top cover 1, a valve body 4 and a valve bottom cover 7 that can be assembled and installed together, the valve bottom cover 7 including a water inlet, the valve body 4 including two diverter pipes 5 communicating with an inner cavity, the two diverter pipes 5 being located at one end of the inner cavity and being integrally provided with an intermediate block 6, and the intermediate block 6 having two communication ports respectively communicating with the diverter pipes 5, and further comprising:

[0037] The sealing cover 3 is fixedly installed between the valve top cover 1 and the valve body 4, and the sealing cover 3 includes a soft part 3a and a hard part 3b. A first spring 2 is installed between the hard part 3b and the inner wall of the valve top cover 1;

[0038] The locking assembly locks the position of the hard part 3b and keeps it in a closed state when the hard part 3b closes the two connecting ports of the diversion pipe 5 on the middle block 6. When the water pressure value of the two diversion pipes 5 exceeds the preset value when water enters the two diversion pipes 5 and the difference is within the preset range, the locking assembly releases the locking state of the hard part 3b.

[0039] In order to prevent the water in the valve body from flowing back to the water inlet with lower water pressure due to the large difference in water pressure between the two water inlets during the merging process, a locking assembly is provided to lock the position of the hard portion 3b. When water flows into the two diverter pipes 5, the water pressure values ​​of the two diverter pipes exceed a preset value, and the water pressure difference between the two is within a preset range, the locking assembly releases the locking effect of the hard portion 3b. At this time, the water pressure of the two diverter pipes 5 can overcome the elastic force of the first spring 2, pushing up the hard portion 3b, and the water flows into the valve body 4 and is discharged from the water inlet of the valve bottom cover 7, completing the merging process.

[0040] It is worth noting that the preset value of the water pressure difference between the two can be interpreted as that the water inlet of the valve bottom cover 7 can timely release the water pressure in the diversion pipe 5 with higher water pressure, thereby preventing the diversion pipe 5 with lower water pressure from backflowing.

[0041] In one of the more preferred embodiments, the locking assembly includes an adjusting rod 8 mounted on the top of the intermediate block 6 and capable of rotation and adjustment, and one end of the adjusting rod 8 extends outside the valve top cover 1, and a through hole is provided inside the hard portion 3b for the adjusting rod 8 to pass through;

[0042] It also includes two mounting cavities 9 opened at the bottom of the hard part 3b, and two mounting holes respectively connected to the two mounting cavities 9 are opened inside the hard part 3b, and the two mounting holes are slidably installed with an insertion rod 13 whose sliding is controlled by the water pressure in the shunt pipe 5, and the outer wall of the adjusting rod 8 is provided with two locking grooves 15 for the insertion of the insertion rod 13.

[0043] For details, please refer to Figure 3 In the non-water-flowing state, the hard portion 3b closes the two communicating ports on the middle block 6 under the elastic force of the first spring 14. At this time, the two insertion rods 13 are inserted in the locking groove 15 on the adjusting rod 8, thereby limiting the position of the hard portion 3b. Then, when the two diversion pipes 5 are filled with water, the water pressure of the two exceeds the preset value, and the water pressure difference is within the preset range, the two insertion rods 13 disengage from the locking groove 15 at the same time, releasing the locking effect on the hard portion 3b. Under the action of the water pressure in the diversion pipe 5, the hard portion 3b is lifted up to realize the merging process.

[0044] In one of the more preferred embodiments, two piston plates 10 are slidably installed in the installation cavity 9, and the two piston plates 10 are fixedly connected by a rack 11. The inner wall of the installation cavity 9 is also rotatably installed with a gear 12 that meshes with the rack 11. The outer wall of one end of the insertion rod 13 extending into the installation cavity 9 is provided with a tooth groove, and the tooth groove is engaged with the gear 12. A second spring 14 is installed between the piston plate 10 away from the diversion pipe 5 and the inner wall of the installation cavity 9.

[0045] For details, please refer to Figure 3When the water pressure of the water injected into the two diversion pipes 5 exceeds a preset value, the water pressure will push the piston plate 10 upward, compressing the second spring 14. At the same time, through the transmission cooperation between the rack 11, the gear 12 and the teeth and grooves on the insertion rod 13, the insertion rod 13 will be driven to move back into the installation cavity 9, so that the insertion rod 13 is disengaged from the locking groove 15 on the adjustment rod 8, releasing the locking effect on the hard part 3b. Then, the water pressure in the diversion pipe 5 can push up the hard part 3b, completing the merging process;

[0046] It is worth noting that the water pressure in the two diversion pipes 5 needs to exceed the preset value before the two insertion rods 13 can be disengaged from the lock groove 15. If the water pressure in one of the diversion pipes 5 is insufficient, the hard portion 3b will not be pushed open, and the diversion pipe 5 cannot be connected to the valve body 4, thereby avoiding the backflow phenomenon in the diversion pipe 5 with low water pressure due to the different water pressures in the two diversion pipes 5.

[0047] In one of the more preferred embodiments, the locking groove 15 is configured as a gradual groove, and has a gradual transition with the arc-shaped outer wall of the adjusting rod 8 .

[0048] For details, please refer to Figure 4-5 In the above content, the confluence process is completed. When diversion is required, that is, the water needs to enter from the water inlet on the valve bottom cover 7 and then be diverted through the two diversion pipes 5, the adjusting rod 8 can be rotated at this time. The lock groove 15 on the adjusting rod 8 will gradually push the plug rod 13 out until it is separated from the lock groove 15. At this time, the hard part 3b only closes the communication port on the middle block 6 through the elastic force of the first spring 2. Therefore, when the water flows from the water inlet on the valve bottom cover 7, the water flow can directly lift the hard part 3b, thereby completing the diversion process.

[0049] In summary, by rotating the adjustment rod 8, the overall three-way valve can be switched between diversion or merging according to the actual usage scenario, thereby adapting to more usage scenarios.

[0050] In one of the more preferred embodiments, sealing rings 29 are installed at the two communication ports of the hard portion 3 b on the middle block 6 , and the diameter of the sealing ring 29 is larger than the inner diameter of the communication port.

[0051] The provision of the sealing ring 29 can improve the sealing effect at the communication port.

[0052] In one of the more preferred embodiments, a flow limiting component is further included. When the water flows outward from the two diversion pipes 5, the flow limiting component makes the water output of the two diversion pipes 5 consistent.

[0053] During the diversion process, if the water pressure is not high enough, the amount of water flowing out of the diversion pipe 5 will not be uniform. Therefore, in order to solve this problem, a flow limiting component is set up so that when the three-way valve is diverting, the water output of the two diversion pipes 5 is consistent, so as to achieve the purpose of equal water output on both sides.

[0054] In a further preferred embodiment, during the flow diversion process, a first embodiment of the flow limiting component is provided;

[0055] The flow limiting assembly includes a first column 17 and a second column 18 slidably mounted on the inner wall of the diversion pipe 5. The first column 17 and the second column 18 are rotatably connected to each other, and the first column 17 and the second column 18 are each provided with a corresponding water hole 21 for communication.

[0056] The flow limiting component also includes a water groove 16 opened on the inner wall of the diversion pipe 5, a hollow plate 19 is fixed to the outer wall of the second column 18, and the second column 18 is slidably connected to the water groove 16 through the hollow plate 19. A third spring 20 is installed between the hollow plate 19 and the inner wall of the water groove 16. When water enters the diversion pipe 5, the water pressure pushes the first column 17 and the second column 18 to move, so that the water groove 16 opens to connect the diversion pipe 5.

[0057] During the diversion process, when the diversion pipe 5 diverts the flow, under the action of the water pressure and the third spring 20, it pushes the second column 18 and the first column 17 to move outward, and the first column 17 closes the water channel 16. Figure 3 At this time, the water flow can only be discharged through the water hole 21 during diversion. Due to the flow restriction, the water pressure inside the valve body 4 and the middle block 6 will increase, so that the water pressure and water flow discharged through the water hole 21 are constant, thereby achieving the purpose of equalizing the two diversion outlet levels.

[0058] In one of the more preferred embodiments, a hole is opened in the middle block 6 at the position of the connecting port of the shunt pipe 5, and two pull ropes 25 are fixed to the outer wall of the adjustment rod 8, and the two pull ropes 25 are respectively fixed to the two second columns 18;

[0059] Two pin blocks 22 are fixed to the inner wall of the shunt pipe 5, and a first slide groove 23 is provided on the outer wall of the first column 17, and the first slide groove 23 is a straight groove, one of the pin blocks 22 is inserted into and slidably connected to the first slide groove 23, and a second slide groove 24 is provided on the outer wall of the second column 18, and another pin block 22 is inserted into and slidably connected to the second slide groove 24, and the second slide groove 24 includes a straight groove and a spiral groove that are interconnected.

[0060] During the diversion process, as can be seen from the previous content, it is necessary to rotate the adjusting rod 8 so that the locking assembly releases the locking effect on the hard part 3b. During the rotation process, the adjusting rod 8 will also wrap around the pull rope 25 and straighten it. The purpose is to limit the movement stroke of the second column 18 and the first column 17. In this way, during the diversion process, when the second column 18 and the first column 17 move outward, the pin block 22 will only slide with the straight groove part of the second chute 24, thereby ensuring that the water holes 21 on the two cylindrical blocks remain connected.

[0061] During the merging process, the external water pressure will push the first column 17 and the second column 18 to slide inward, so that the water groove 16 is connected to the inside of the diversion pipe 5. In this way, while the water flows in through the water hole 21, the water groove 16 can also allow the water to pass through, thereby reducing the weakening of the water pressure in the diversion pipe 5 during the merging process to ensure the merging process.

[0062] It is worth noting that, during the merging process, when the water pressure in the two diversion pipes 5 exceeds the preset value, the above-mentioned structure can be used to disengage the plug rod 13 from the lock groove 15 to complete the merging process. However, if the water pressure in both diversion pipes 5 exceeds the preset value, but the difference between the two water pressures is large, the diversion pipe 5 with low water pressure can still be backflowed. Therefore, during the merging process, that is, Figure 3 , at this time the regulating rod 8 has not rotated, so the pull rope 25 will not limit the movement stroke of the second column 18. That is to say, during the merging process, when the diversion pipe 5 with low water pressure flows back, under the action of the water pressure, the first column 17 and the second column 18 are pushed outward, and under the sliding cooperation of the pin block 22 and the second slide groove 24, the second column 18 will first slide in a straight line, and then rotate a certain angle to make the water holes 21 on the two cylinders staggered with each other, thereby realizing the closure of the diversion pipe 5, and then preventing the diversion pipe 5 with low water pressure from flowing back. This method is more applicable when two different liquids merge, and can avoid the mixed pollution caused by the backflow phenomenon to the source of the liquid supply.

[0063] Example 2: In the process of diversion, a second implementation method of the current limiting component is provided. For details, please refer to Figure 10 ;

[0064] In one of the more preferred embodiments, the flow limiting assembly includes an external pipe 26 detachably mounted on the outside of the diverter pipe 5 , a flow limiter 27 is mounted in the external pipe 26 , and a water hole 28 is provided in the flow limiter 27 .

[0065] When water pressure passes through the small water hole 28 in the middle of the flow restrictor 27, it will cause the internal pressure at both ends of the water outlet to increase, so that the water pressure and water flow out of the small water hole 28 in the middle of the flow restrictor 27 are constant, so that the purpose of even water discharge on both sides can be achieved.

[0066] In one of the more preferred embodiments, the length of the first sliding groove 23 is greater than the length of the straight groove portion of the second sliding groove 24.

[0067] In one of the more preferred embodiments, two arc grooves are provided on the outside of the adjusting rod 8 for the pull rope 25 to be inserted into.

[0068] See Figure 6 By setting the arc groove, when the adjusting rod 8 is rotated for adjustment, the wound pull rope 25 is embedded in the arc groove, which can prevent the pull rope 25 from deflecting.

[0069] In one of the more preferred embodiments, a sealing ring is further installed on the outer wall of the first column 17 .

[0070] In one of the more preferred embodiments, the sealing ring 29 is made of PETT.

[0071] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0072] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A two-way three-way valve, comprising a valve top cover (1), a valve body (4) and a valve bottom cover (7) that can be assembled and installed, wherein the valve bottom cover (7) comprises a water inlet, the valve body (4) comprises two diverter pipes (5) communicating with an inner cavity, the two diverter pipes (5) are located at one end of the inner cavity and are integrally provided with an intermediate block (6), and the intermediate block (6) is provided with two communication ports respectively communicating with the diverter pipes (5), characterized in that: Also includes: A sealing cover (3), the sealing cover (3) being fixedly mounted between the valve top cover (1) and the valve body (4), and the sealing cover (3) comprising a soft portion (3a) and a hard portion (3b), a first spring (2) being mounted between the hard portion (3b) and the inner wall of the valve top cover (1); A locking assembly, wherein when the hard portion (3b) closes the two communication ports of the diverter pipe (5) on the middle block (6), the locking assembly locks the position of the hard portion (3b) and keeps it in a closed state; and when the water pressure value of the two diverter pipes (5) when water enters exceeds a preset value and the difference is within a preset range, the locking assembly releases the locking state of the hard portion (3b); The locking assembly includes an adjusting rod (8) mounted on the top of the intermediate block (6) and capable of rotational adjustment, one end of the adjusting rod (8) extending outside the valve top cover (1), and a through hole for the adjusting rod (8) to pass through is provided inside the hard portion (3b); It also includes two mounting cavities (9) provided at the bottom of the hard portion (3b), and two mounting holes respectively connected to the two mounting cavities (9) are provided inside the hard portion (3b), and an insertion rod (13) slidably installed in each of the two mounting holes and controlled by the water pressure in the shunt pipe (5), and the outer wall of the regulating rod (8) is provided with two locking grooves (15) for the insertion rod (13) to be inserted; Two piston plates (10) are slidably mounted in the mounting cavity (9), and the two piston plates (10) are fixedly connected via a rack (11). A gear (12) meshing with the rack (11) is rotatably mounted on the inner wall of the mounting cavity (9). A tooth groove is formed on the outer wall of one end of the insertion rod (13) extending into the mounting cavity (9), and the tooth groove meshes with the gear (12). A second spring (14) is mounted between the piston plate (10) away from the shunt pipe (5) and the inner wall of the mounting cavity (9).

2. The two-way three-way valve according to claim 1, characterized in that: The locking groove (15) is configured as a gradual groove, and forms a gradual transition with the arc-surface outer wall of the regulating rod (8).

3. The two-way three-way valve according to claim 1, characterized in that: The hard portion (3b) is provided with sealing rings (29) at the two communication ports on the middle block (6), and the diameter of the sealing rings (29) is larger than the inner diameter of the communication ports.

4. The two-way three-way valve according to claim 2, characterized in that: It also includes a flow limiting component. When water flows outward from the two diversion pipes (5), the flow limiting component makes the water output of the two diversion pipes (5) consistent.

5. The two-way three-way valve according to claim 4, characterized in that: The flow limiting assembly comprises a first column (17) and a second column (18) slidably mounted on the inner wall of the diversion pipe (5), the first column (17) and the second column (18) being rotatably connected, and the first column (17) and the second column (18) are both provided with correspondingly connected water holes (21) in their interiors; The flow limiting assembly further comprises a water trough (16) provided on the inner wall of the diversion pipe (5); a hollow plate (19) is fixed to the outer wall of the second column (18); and the second column (18) is slidably connected to the water trough (16) via the hollow plate (19); a third spring (20) is installed between the hollow plate (19) and the inner wall of the water trough (16); when water enters the diversion pipe (5), the water pressure pushes the first column (17) and the second column (18) to move, so that the water trough (16) opens and connects the diversion pipe (5).

6. The two-way three-way valve according to claim 5, characterized in that: The middle block (6) is provided with a hole at the position of the connecting port of the shunt pipe (5); two pull ropes (25) are fixed to the outer wall of the regulating rod (8), and the two pull ropes (25) are respectively fixed to the two second columns (18); Two pin blocks (22) are fixed to the inner wall of the diverter pipe (5); a first slide groove (23) is provided on the outer wall of the first column (17); and the first slide groove (23) is a straight groove, and one of the pin blocks (22) is inserted into and slidably connected to the first slide groove (23); a second slide groove (24) is provided on the outer wall of the second column (18); the other pin block (22) is inserted into and slidably connected to the second slide groove (24), and the second slide groove (24) includes a straight groove and a spiral groove that are connected to each other.

7. The two-way three-way valve according to claim 5, characterized in that: The flow limiting assembly comprises an external pipe (26) detachably mounted on the outside of the shunt pipe (5), a flow limiter (27) being mounted inside the external pipe (26), and a water hole (28) being provided inside the flow limiter (27).

8. The two-way three-way valve according to claim 6, characterized in that: The length of the first chute (23) is greater than the length of the straight groove portion of the second chute (24).

9. The two-way three-way valve according to claim 6, characterized in that: The outside of the adjusting rod (8) is provided with two arc grooves for the pull rope (25) to be embedded.

10. The two-way three-way valve according to claim 5, characterized in that: A sealing ring is also installed on the outer wall of the first column (17).

11. The two-way three-way valve according to claim 3, characterized in that: The sealing ring (29) is made of PETT material.

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