Waterway switching valve and drinking water system formed by same

Abstract

The utility model discloses a waterway switching valve and a drinking water system comprising the same, the waterway switching valve comprises a valve body, the valve body is provided with a water inlet, a first water outlet and a second water outlet, a valve sleeve is embedded in the valve body, the side wall of the valve sleeve is respectively provided with a water inlet through hole, a first through hole and a second through hole which correspond to and are communicated with the water inlet, the first water outlet and the second water outlet, and the control piece rotates to switch the on-off state of the water path between the water inlet through hole and the first through hole and the on-off state of the water path between the water inlet through hole and the second through hole. Two-way water supply can be achieved through the water way switching valve, after the water way switching valve is applied to a drinking water system, water can be supplied to a heating tank independently, water can also be supplied to a faucet independently, the number of electromagnetic valves does not need to be increased, the water way structure is optimized, and production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid conveying equipment technical field, concretely relates to a waterway switch valve and the drinking water system formed by it. BACKGROUND

[0002] The current drinking water system is mainly composed of a heating tank, a water pump and a faucet, source water is delivered to the heating tank by a source water pipe through a solenoid valve, and after heating, it is delivered to the faucet, due to the single waterway in the current drinking water system, only the heating tank supplies hot water at the faucet, if it is needed to supply normal temperature source water to the faucet, the current method is to increase the number of solenoid valves to redesign the waterway to supply normal temperature water to the faucet, which makes the pipeline and components of the drinking water system more complex, and the increase in the number of solenoid valves increases the cost of the drinking water system. SUMMARY

[0003] The utility model discloses a waterway switch valve and the drinking water system formed by it, two-way water supply can be realized through the waterway switch valve, after being applied to the drinking water system, it can supply water to the heating tank and the faucet separately, without increasing the number of solenoid valves, the waterway structure is optimized, and the production cost is reduced.

[0004] To solve the above technical problems, the utility model adopts the following scheme:

[0005] A waterway switch valve, including the valve body, be equipped with the water inlet, the first water outlet, the second water outlet on the valve body, the valve body is embedded with the valve bush, is equipped with the water inlet through -hole, the first through -hole, the second through -hole respectively with the water inlet, the first water outlet, the second water outlet corresponding and the access of the valve bush lateral wall, still include the control piece of rotation setting in the valve bush, the control piece rotation switches the on -off state of the waterway between the water inlet through -hole and the first through -hole, the waterway between the water inlet through -hole and the second through -hole.

[0006] In the scheme, the water inlet is used to introduce water source, when water is needed to be supplied to a certain direction or equipment, the water will flow out from the first water outlet, similar to the function of the first water outlet, the second water outlet is used for another direction or equipment, the valve sleeve is stably installed in the valve body, ensuring that the through hole on it is aligned with the inlet and outlet on the valve body, the water inlet through hole, the first through hole and the second through hole correspond to the water inlet, the first water outlet and the second water outlet on the valve body respectively, so that the water can flow between the corresponding orifices under the guidance of the control member, the control member can rotate freely in the valve sleeve, this design makes the waterway switching simple and flexible, by rotating the control member, the waterway on-off between the water inlet through hole and the first through hole and the second through hole can be controlled, when the control member connects the water inlet through hole with the first through hole, the water will flow into the first water outlet from the water inlet; when the control member switches to connect the water inlet through hole with the second through hole, the water flows to the second water outlet, so as to realize the switching of the waterway, after being applied to the drinking water system, the first water outlet and the second water outlet can be connected to different equipment according to different waterway requirements, and then the on-off state of the first water outlet and the second water outlet can be switched by the control member, so that the water can be supplied to different equipment by one waterway switching valve, without increasing the number of electromagnetic valves, the waterway structure is optimized, and the production cost is reduced.

[0007] Optionally, the valve sleeve bottom valve seat is connected with a driving motor, and an output shaft of the driving motor is connected with the control member to provide power for rotation of the control member.

[0008] Optionally, the control member is a valve core, the valve core comprises a rotating shaft and a sleeve, the lower end of the rotating shaft is rotationally connected with the valve seat, the bottom surface of the rotating shaft is connected with the output shaft, the sleeve is arranged outside the rotating shaft, and an annular water passing cavity is formed between the sleeve and the rotating shaft, the lower end of the water passing cavity is closed, and the upper end is open, water inlet grooves, first grooves and second grooves are arranged on the side wall of the sleeve and communicated with the water passing cavity, the water inlet grooves are in a constant-through state with the water inlet through hole, the first grooves, the second grooves and the water inlet grooves are all strip-shaped openings arranged along the circumference of the sleeve, and the valve core rotates to switch the on-off state of the waterway between the first grooves and the first through hole and the waterway between the second grooves and the second through hole.

[0009] Optionally, the first grooves are located above the water inlet grooves, the second grooves are located below the water inlet grooves, a first water sealing surface formed by the side wall of the sleeve is formed between the two ends of the first grooves, a second water sealing surface formed by the side wall of the sleeve is formed between the two ends of the second grooves, when the valve core rotates to cover the first through hole with the first water sealing surface, the waterway between the first grooves and the first through hole is in a disconnected state, and the waterway between the second grooves and the second through hole is in a connected state; when the valve core rotates to cover the second through hole with the second water sealing surface, the waterway between the second grooves and the second through hole is in a disconnected state, and the waterway between the first grooves and the first through hole is in a connected state.

[0010] Optionally, the first notch is axially spaced along the sleeve, and a plurality of first notches are provided, the length of the first notch gradually increases from top to bottom, one end of the plurality of first notches is axially aligned, the depth of the first notch gradually increases in the counterclockwise direction, and the position with the maximum depth in the first notch is provided with a water passing hole connected with the water passing cavity.

[0011] Optionally, the second notch is axially spaced along the sleeve, and a plurality of second notches are provided, the length of the plurality of second notches is consistent, the water inlet notch is axially spaced along the sleeve, and a plurality of water inlet notches are provided, the length of the plurality of water inlet notches is consistent, and the plurality of water inlet notches are distributed in multiple groups along the circumferential direction of the sleeve.

[0012] Optionally, the water inlet notch and the second notch penetrate the side wall of the sleeve along the radial direction of the sleeve.

[0013] Optionally, the first sealing ring is embedded in the water inlet through hole, the first support sleeve ring is clamped on the inner side of the first sealing ring, the second sealing ring is embedded in the first through hole, the second support sleeve ring is clamped on the inner side of the second sealing ring, the third sealing ring is embedded in the second through hole, and the third support sleeve ring is clamped on the inner side of the third sealing ring. The inner sides of the first support sleeve ring, the second support sleeve ring and the third support sleeve ring are respectively provided with a first water hole, a second water hole and a third water hole, and the first water hole, the second water hole and the third water hole are respectively connected with the water inlet, the first water outlet and the second water outlet.

[0014] Optionally, the middle part of the rotating shaft is provided with a cavity, the top of the valve body is provided with an air hole connected with the cavity, the upper end and the lower end of the rotating shaft are respectively provided with a first groove and a second groove, the fourth sealing ring is embedded in the first groove, the fifth sealing ring is embedded in the second groove, the sixth sealing ring is embedded on the side wall of the valve seat, and the valve seat is integrally formed with the valve sleeve.

[0015] A water drinking system comprises a heating tank, a water pump, a faucet, a source water pipe and a tee joint, the source water pipe is connected with the water inlet pipe of the water path switching valve, the second water outlet of the water path switching valve is connected with the water inlet end of the heating tank, the first water outlet of the water path switching valve is connected with the first port of the tee joint, the water outlet end of the heating tank is connected with the water inlet end of the water pump, the water outlet end of the water pump is connected with the second port of the tee joint, and the third port of the tee joint is connected with the faucet.

[0016] The utility model has the beneficial effect that:

[0017] In this invention, the water flow between the inlet hole and the first and second through holes can be controlled by rotating the control component. When the control component connects the inlet hole to the first through hole, water will flow from the inlet to the first outlet. When the control component switches the connection between the inlet hole and the second through hole, water will flow to the second outlet. This achieves water flow switching. When applied to a drinking water system, the first and second outlets can be connected to different devices according to different water flow requirements. Then, the on / off state of the water flow between the first and second outlets can be switched by controlling the control component. Water can be supplied to different devices through a single water flow switching valve, eliminating the need to increase the number of solenoid valves, optimizing the water flow structure, and reducing production costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the water circuit switching valve.

[0019] Figure 2 This is a schematic diagram of the assembly structure of the valve sleeve and valve seat;

[0020] Figure 3 This is a schematic diagram of the valve core structure;

[0021] Figure 4 This is a schematic diagram of the distribution structure of the first slot on the side wall of the sleeve.

[0022] Figure 5 This is a schematic diagram of a drinking water system.

[0023] Reference numerals: 01-Motor, 02-Output shaft, 03-Rotating shaft, 04-Fifth sealing ring, 05-Valve sleeve, 06-Sixth sealing ring, 07-Third sealing ring, 08-Third support collar, 09-Third water hole, 10-Valve body, 11-Second water outlet, 12-Water passage cavity, 13-Second sealing ring, 14-Second support collar, 15-Second water hole, 16-First water outlet, 17-Fourth sealing ring, 18-Air hole, 19-Cavity, 20-First slot, 21- 22-First sealing ring, 23-First water hole, 24-Water inlet, 25-Water inlet groove, 26-Second through hole, 27-First through hole, 28-Water inlet through hole, 29-First groove, 30-First sealing surface, 31-Second groove, 32-Second groove, 33-Sleeve, 34-Water passage hole, 35-Valve seat, 36-Second sealing surface, 37-Source water pipe, 38-Water circuit switching valve, 39-Tee, 40-Water pump, 41-Heating tank, 42-Faucet. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0025] In the description of the utility model, it is necessary to explain that, the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "internal", "external", "front", "rear", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0026] In the description of the utility model, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "set", "open", "install", "connect", "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Embodiment

[0028] A waterway switching valve, comprising a valve body 10, the valve body 10 is equipped with water inlet 24, first water outlet 16, second water outlet 11, the valve body 10 is embedded with valve sleeve 05, the side wall of valve sleeve 05 is equipped with water inlet through hole 28, first through hole 27, second through hole 26 respectively corresponding with water inlet 24, first water outlet 16, second water outlet 11 and connecting, it also includes control member rotatingly arranged in valve sleeve 05, control member rotates and switches the on-off state of waterway between water inlet through hole 28 and first through hole 27, water inlet through hole 28 and second through hole 26.

[0029] In the embodiment, as Figures 1-4As shown, the water inlet 24 is used to introduce water source, when water is needed to supply to a certain direction or equipment, water will flow out from the first water outlet 16, similar to the function of the first water outlet 16, the second water outlet 11 is used for another direction or equipment, the valve sleeve 05 is stably installed in the valve body 10, ensuring that the through hole on it is aligned with the inlet and outlet on the valve body 10, the water inlet through hole 28, the first through hole 27 and the second through hole 26 correspond to the water inlet 24, the first water outlet 16 and the second water outlet 11 on the valve body 10 respectively, so that water can flow between the corresponding orifices under the guidance of the control member, the control member can rotate freely in the valve sleeve 05, this design makes the waterway switching simple and flexible, by rotating the control member, the waterway between the water inlet through hole 28 and the first through hole 27 and the second through hole 26 can be controlled, when the control member connects the water inlet through hole 28 with the first through hole 27, water will flow from the water inlet 24 to the first water outlet 16; when the control member switches to connect the water inlet through hole 28 with the second through hole 26, water will flow to the second water outlet 11, thus realizing the switching of the waterway, after being applied to the drinking water system, the first water outlet 16 and the second water outlet 11 can be connected to different equipment according to different waterway requirements, then the control member is controlled to switch the on-off state of the waterway of the first water outlet 16 and the second water outlet 11, through a waterway switching valve 38, water can be supplied to different equipment, without increasing the number of electromagnetic valves, optimizing the waterway structure and reducing the production cost.

[0030] Further, the valve seat 35 at the bottom of the valve sleeve 05, the bottom surface of the valve seat 35 is connected with the driving motor 01, the output shaft 02 of the driving motor 01 is connected with the control member for providing power for the rotation of the control member.

[0031] Further, the control member is a valve core, which includes a rotating shaft 03 and a sleeve 33, the lower end of the rotating shaft 03 is rotationally connected with the valve seat 35, the bottom surface of the rotating shaft 03 is connected with the output shaft 02, the sleeve 33 is arranged outside the rotating shaft 03, an annular water passing cavity 12 is formed between the sleeve 33 and the rotating shaft 03, the lower end of the water passing cavity 12 is closed and the upper end is open, a water inlet groove 25, a first groove 20 and a second groove 31 are arranged on the side wall of the sleeve 33 and connected with the water passing cavity 12, the water inlet groove 25 is in a constant open state with the water inlet through hole 28, the first groove 20, the second groove 31 and the water inlet groove 25 are all strip-shaped openings arranged along the circumference of the sleeve 33, the valve core rotates to switch the on-off state of the waterway between the first groove 20 and the first through hole 27 and the waterway between the second groove 31 and the second through hole 26.

[0032] Further, the first slot 20 is located above the water inlet slot 25, the second slot 31 is located below the water inlet slot 25, the first slot 20 is formed between the two ends of the first water sealing surface 30 formed by the side wall of the sleeve 33, the second slot 31 is formed between the two ends of the second water sealing surface 36 formed by the side wall of the sleeve 33, when the valve core rotates to cover the first through hole 27 with the first water sealing surface 30, the water path between the first slot 20 and the first through hole 27 is in a disconnected state, and the water path between the second slot 31 and the second through hole 26 is in a connected state; when the valve core rotates to cover the second through hole 26 with the second water sealing surface 36, the water path between the second slot 31 and the second through hole 26 is in a disconnected state, and the water path between the first slot 20 and the first through hole 27 is in a connected state.

[0033] Further, the first slot 20 is spaced along the axial direction of the sleeve 33, and a plurality of first slots 20 are provided, the length of the first slot 20 gradually increases from top to bottom, one end of the plurality of first slots 20 is aligned along the axial direction, the depth of the first slot 20 gradually increases in the counterclockwise direction, and the first slot 20 is provided with a water passing hole 34 connected with the water passing cavity 12 at the position of the maximum depth.

[0034] Specifically, a plurality of first slots 20 are arranged on the sleeve 33 along the axial direction, the length of the first slot 20 gradually increases from top to bottom, and the design is to provide different water flow areas at different rotating positions to adjust the water flow. Gradually increase the depth (in the counterclockwise direction): the depth of each first slot 20 gradually increases in the counterclockwise direction, which means that during the rotation of the control member, as the depth of the slot increases, the water flow area will also gradually increase, further providing the possibility of adjusting the water flow. The first slot 20 is provided with a water passing hole 34 connected with the water passing cavity 12 at the position of the maximum depth, which is the actual passage of water flow.

[0035] Further, the second slot 31 is spaced along the axial direction of the sleeve 33, and a plurality of second slots 31 are provided, the lengths of the plurality of second slots 31 are consistent, the water inlet slot 25 is spaced along the axial direction of the sleeve 33, and a plurality of water inlet slots 25 are provided, the lengths of the plurality of water inlet slots 25 are consistent, and the plurality of water inlet slots 25 are distributed along the circumferential direction of the sleeve 33.

[0036] Further, the water inlet slot 25 and the second slot 31 both penetrate the side wall of the sleeve 33 along the radial direction of the sleeve 33.

[0037] Further, the first sealing ring 21 is embedded in the water inlet through hole 28, the first support ring 22 is clamped on the inner side of the first sealing ring 21, the second sealing ring 13 is embedded in the first through hole 27, the second support ring 14 is clamped on the inner side of the second sealing ring 13, the third sealing ring 07 is embedded in the second through hole 26, the third support ring 08 is clamped on the inner side of the third sealing ring 07, the first water hole 23, the second water hole 15 and the third water hole 09 are respectively arranged on the inner side of the first support ring 22, the second support ring 14 and the third support ring 08, and the first water hole 23, the second water hole 15 and the third water hole 09 are respectively connected with the water inlet 24, the first water outlet 16 and the second water outlet 11.

[0038] Specifically, the first support ring 22, the second support ring 14 and the third support ring 08 all play a supporting role for the corresponding sealing ring, avoid the collapse of each sealing ring, ensure the sealing effect, the source water firstly passes through the first water hole 23 through the water inlet 24 and then enters the water inlet groove 25, enters the water passing cavity 12 through the water inlet groove 25, and finally the water in the water passing cavity 12 is controlled to be output by the first groove 20 or the second groove 31 by the rotation of the valve core, the water output by the first groove 20 reaches the first water outlet 16 through the second water hole 15, and the water output by the second groove 31 reaches the second water outlet 11 through the third water hole 09.

[0039] Further, the cavity 19 is arranged in the middle of the rotating shaft 03, the air hole 18 is arranged on the top of the valve body 10 and connected with the cavity 19, the first recess 29 and the second recess 32 are respectively arranged on the upper end and the lower end of the rotating shaft 03, the fourth sealing ring 17 is embedded in the first recess 29, the fifth sealing ring 04 is embedded in the second recess 32, the sixth sealing ring 06 is embedded on the side wall of the valve seat 35, and the valve seat 35 is integrally formed with the valve sleeve 05.

[0040] The waterway switching valve 38 works as follows: in the initial state, the waterway between the first slot 20 and the first water outlet 16 and the waterway between the second slot 31 and the second water outlet 11 are in the disconnected state, which means that the first sealing water surface 30 covers the second water hole 15 and the second sealing water surface 36 covers the third water hole 09. However, the water inlet 24 is always connected to the water passing cavity 12 through the second slot 31. After the motor 01 is started, if the first water outlet 16 is required to deliver water to the connected device, the output shaft 02 rotates clockwise by a certain angle, driving the valve core to rotate. When the first slot 20 is connected to the second water hole 15, the second sealing water surface 36 is still in the position covering the third water hole 09, and the waterway between the second slot 31 and the third water hole 09 is blocked. The source water in the water passing cavity 12 is delivered to the first water outlet 16 through the first slot 20 and the second water hole 15, and then delivered to the connected device through the first water outlet 16. If the second water outlet 11 is required to deliver water to the connected device, the motor 01 rotates counterclockwise, and the output shaft 02 rotates counterclockwise by a certain angle, driving the valve core to rotate. When the second slot 31 is connected to the third water hole 09, the first sealing water surface 30 covers the second water hole 15, and the waterway between the first slot 20 and the second water hole 15 is blocked, so the first water outlet 16 cannot deliver water. The water in the water passing cavity 12 is delivered to the second water outlet 11 through the second slot 31 and the third water hole 09, and then delivered to the connected device through the second water outlet 11. In this way, the waterway switching is realized. When the waterway switching valve 38 is applied to the drinking water system, the first water outlet 16 and the second water outlet 11 can be connected to different devices according to different waterway requirements. Then, the connection and disconnection of the waterway of the first water outlet 16 and the second water outlet 11 can be controlled by the control member. The waterway switching valve 38 can supply water to different devices without increasing the number of electromagnetic valves, optimizing the waterway structure and reducing the production cost.

[0041] A drinking water system includes a heating tank 41, a water pump 40, a faucet 42, a source water pipe 37, and a tee joint 39. The source water pipe 37 is connected to the water inlet 24 of the waterway switching valve 38. The second water outlet 11 of the waterway switching valve 38 is connected to the water inlet end of the heating tank 41. The first water outlet 16 of the waterway switching valve 38 is connected to the first port of the tee joint 39. The water outlet end of the heating tank 41 is connected to the water inlet end of the water pump 40. The water outlet end of the water pump 40 is connected to the second port of the tee joint 39. The third port of the tee joint 39 is connected to the faucet 42.

[0042] As Figure 1 and Figure 5As shown, the specific working principle of the waterway switching valve 38 after being installed in the drinking water system: the waterway switching valve 38 is applied to the drinking water system, the source water enters the waterway switching valve 38 through the source water pipe 37 and the water inlet 24, and then enters the first water hole 23 and the water inlet slot 25 and enters the water passing cavity 12. When it is needed to supply normal temperature water to the faucet 42, the controller controls the output shaft 02 of the motor 01 to rotate clockwise by a certain angle, so that the first slot 20 in the waterway switching valve 38 is connected with the second through hole 26, the source water is transported to the first water outlet 16 through the water hole 34 and the first water hole 23, and then is transported to the faucet 42 from the first water outlet 16. At this time, the waterway between the second slot 31 and the third water hole 09 is blocked by the second water sealing surface 36. If the valve core continues to rotate, the depth of the first slot 20 along the counterclockwise direction gradually increases, the first slot 20 is axially spaced along the sleeve 33, and the length of the first slot 20 gradually increases from top to bottom. Therefore, the water quantity transported to the first water outlet 16 through the water hole 34 is increased, and vice versa, so as to realize the adjustment of the water quantity of the first water outlet 16. When it is needed to transport water to the heating tank 41, the controller controls the output shaft 02 of the motor 01 to rotate counterclockwise by a certain angle, so that the second slot 31 in the waterway switching valve 38 is connected with the third water hole 09. At this time, the first water sealing surface 30 blocks the waterway between the first slot 20 and the second water hole 15, and the source water is transported to the second water outlet 11 through the third water hole 09, and then is transported to the heating tank 41 for heating. When the mixed water of heated water and normal temperature water is needed at the faucet 42, the heated water in the heating tank 41 and the normal temperature water transported from the first water outlet 16 are mixed at the three-way joint 39 by the water pump 40, and then are transported to the faucet 42. Through the action of one waterway switching valve 38, different waterways for water supply can be realized, more electromagnetic valves are not needed in the drinking water system to form new waterways for water supply, the waterway structure of the drinking water system is simplified, the production process is reduced, and the production cost is reduced.

[0043] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. According to the technical essence of the present application, any simple modification, equivalent replacement and improvement of the above embodiment are still within the protection scope of the technical scheme of the present application.

Claims

1. A water circuit switching valve, comprising a valve body (10), wherein the valve body (10) is provided with an inlet (24), a first outlet (16), and a second outlet (11), characterized in that, The valve body (10) is embedded with a valve sleeve (05). The side wall of the valve sleeve (05) is provided with an inlet through hole (28), a first through hole (27), and a second through hole (26) that correspond to and are connected to the inlet (24), the first outlet (16), and the second outlet (11). The valve sleeve (05) also includes a control component that is rotatably disposed in the valve sleeve (05). The control component rotates to switch the on / off state of the water passage between the inlet through hole (28) and the first through hole (27) and the water passage between the inlet through hole (28) and the second through hole (26).

2. The water circuit switching valve according to claim 1, characterized in that, The valve sleeve (05) has a bottom valve seat (35), and the bottom surface of the valve seat (35) is connected to a drive motor (01). The output shaft (02) of the drive motor (01) is connected to the control component to provide power for the rotation of the control component.

3. A water circuit switching valve according to claim 2, characterized in that, The control component is a valve core, which includes a rotating shaft (03) and a sleeve (33). The lower end of the rotating shaft (03) is rotatably connected to the valve seat (35), and the bottom surface of the rotating shaft (03) is connected to the output shaft (02). The sleeve (33) is located outside the rotating shaft (03), and an annular water passage cavity (12) is formed between the sleeve (33) and the rotating shaft (03). The water passage cavity (12) is closed at the lower end and open at the upper end. The side wall of the sleeve (33) is provided with a connection to the water passage cavity (12). The inlet slot (25), the first slot (20), and the second slot (31) are normally open. The inlet slot (25) and the inlet through hole (28) are normally open. The first slot (20), the second slot (31), and the inlet slot (25) are all strip-shaped openings opened along the circumference of the sleeve (33). The valve core rotates to switch the on / off state of the water passage between the first slot (20) and the first through hole (27) and the water passage between the second slot (31) and the second through hole (26).

4. A water circuit switching valve according to claim 3, characterized in that, The first slot (20) is located above the water inlet slot (25), and the second slot (31) is located below the water inlet slot (25). A first sealing surface (30) formed by the side wall of the sleeve (33) is formed between the two ends of the first slot (20), and a second sealing surface (36) formed by the side wall of the sleeve (33) is formed between the two ends of the second slot (31). When the valve core rotates to the point where the first sealing surface (30) covers the first through hole (27), the water passage between the first slot (20) and the first through hole (27) is disconnected, and the water passage between the second slot (31) and the second through hole (26) is connected. When the valve core rotates to the point where the second sealing surface (36) covers the second through hole (26), the water passage between the second slot (31) and the second through hole (26) is disconnected, and the water passage between the first slot (20) and the first through hole (27) is connected.

5. A water circuit switching valve according to claim 4, characterized in that, The first slot (20) is provided with multiple slots at intervals along the axial direction of the sleeve (33). The length of the first slot (20) gradually increases from top to bottom. One end of the multiple first slots (20) is aligned along the axial direction. The depth of the first slot (20) gradually increases in the counterclockwise direction. A water passage hole (34) connected to the water passage cavity (12) is provided at the position of the maximum depth inside the first slot (20).

6. A water circuit switching valve according to claim 3, characterized in that, The second slot (31) is provided at intervals along the axial direction of the sleeve (33), and the multiple second slots (31) have the same length. The water inlet slot (25) is provided at intervals along the axial direction of the sleeve (33), and the multiple water inlet slots (25) have the same length. The multiple water inlet slots (25) are distributed in multiple groups at intervals along the circumference of the sleeve (33).

7. A water circuit switching valve according to claim 6, characterized in that, The water inlet (25) and the second inlet (31) both penetrate the side wall of the sleeve (33) radially.

8. A water circuit switching valve according to claim 1, characterized in that, A first sealing ring (21) is embedded in the water inlet hole (28), and a first support collar (22) is inserted inside the first sealing ring (21). A second sealing ring (13) is embedded in the first through hole (27), and a second support collar (14) is inserted inside the second sealing ring (13). A third sealing ring (07) is embedded in the second through hole (26), and a third support collar (08) is inserted inside the third sealing ring (07). A first water hole (23), a second water hole (15), and a third water hole (09) are respectively provided inside the first support collar (22), the second support collar (14), and the third support collar (08). The first water hole (23), the second water hole (15), and the third water hole (09) are respectively connected to the water inlet (24), the first water outlet (16), and the second water outlet (11).

9. A water circuit switching valve according to claim 3, characterized in that, The rotating shaft (03) has a cavity (19) in the middle, and the valve body (10) has an air hole (18) at the top that communicates with the cavity (19). The upper and lower ends of the rotating shaft (03) are respectively provided with a first groove (29) and a second groove (32). A fourth sealing ring (17) is embedded in the first groove (29), a fifth sealing ring (04) is embedded in the second groove (32), and a sixth sealing ring (06) is embedded on the side wall of the valve seat (35). The valve seat (35) and the valve sleeve (05) are integrally formed.

10. A drinking water system comprising a water circuit switching valve as described in any one of claims 1-9, characterized in that, The system includes a heating tank (41), a water pump (40), a faucet (42), a source water pipe (37), and a tee (39). The source water pipe (37) is connected to the inlet (24) of the water circuit switching valve (38). The second outlet (11) of the water circuit switching valve (38) is connected to the inlet of the heating tank (41). The first outlet (16) of the water circuit switching valve (38) is connected to the first port of the tee (39). The outlet of the heating tank (41) is connected to the inlet of the water pump (40). The outlet of the water pump (40) is connected to the second port of the tee (39). The third port of the tee (39) is connected to the faucet (42).

Images