Switching water outlet device and closestool thereof

Abstract

The switching water outlet device comprises a switching valve body, a movable assembly and a reset assembly, and the switching valve body is provided with a liquid inlet channel, a mounting cavity, a first liquid outlet channel and a second liquid outlet channel; the movable assembly is movably arranged in the mounting cavity, a first cavity is defined by the movable assembly and the switching valve body, and the liquid inlet channel can convey liquid to the first liquid outlet channel and the second liquid outlet channel through the first cavity; the reset assembly can drive the movable assembly to move to disconnect the second liquid outlet channel from the first cavity, the device further comprises an air inlet and a liquid inlet, the first liquid outlet channel comprises a water passing cavity and a mixed foaming cavity which are sequentially arranged in the water flow direction, and the liquid outlet area of the water passing cavity is gradually reduced in the water flow direction; the air inlet and the liquid inlet are respectively communicated with the mixed foaming cavity, so that water entering the mixed foaming cavity from the water passing cavity can be mixed with air entering from the air inlet and foaming liquid entering from the liquid inlet for foaming to form foam liquid, the foam liquid is sprayed to a pot surface, and a foam odor isolation function is realized.

Description

Technical Field

[0001] This utility model belongs to the field of sanitary ware technology, specifically relating to a water outlet switching device and its toilet. Background Technology

[0002] Some toilets require a switching mechanism to change the fluid path during flushing, in order to clean the toilet bowl and expel waste. However, the switching mechanism usually requires an electronic control component, which is costly, and the electronic control component needs to be moisture-proof and leak-proof, further increasing the cost.

[0003] To address the aforementioned issues, Chinese patent document CN117926890A discloses a liquid path switching mechanism, flushing device, and toilet, which includes the following: The liquid path switching mechanism comprises a housing assembly, a reset component, and a movable component. The movable component can be closed with the housing assembly to form a first cavity. The reset component drives the movable component to disconnect the second liquid outlet channel from the first cavity. Under the action of liquid with a hydraulic pressure greater than or equal to a preset value within the first cavity, the movable component can move relative to the mounting cavity to connect the second liquid outlet channel with the first cavity, and the reset component generates a driving force to reset the movable component. Thus, when the hydraulic pressure within the first cavity is lower than the preset value, liquid can flow from the first liquid outlet channel while the second liquid outlet channel stops flowing; when the hydraulic pressure within the first cavity is greater than or equal to the preset value, the flow is switched so that liquid flows from both the first and second liquid outlet channels simultaneously. This utilizes the hydraulic pressure changes within the first cavity to achieve liquid path switching, thereby achieving switching without electrical control and reducing costs. However, the aforementioned liquid path switching mechanism lacks the function of discharging foam water and therefore lacks foam odor-blocking functionality, requiring further improvement. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a water switching device and a toilet thereof.

[0005] The present invention adopts the following technical solution:

[0006] A water outlet switching device includes a switching valve body, a movable component, and a reset component. The switching valve body is provided with an inlet channel, an installation cavity, a first outlet channel, and a second outlet channel. The movable component is movably disposed in the installation cavity, forming a first cavity with the switching valve body. The inlet channel can transport liquid through the first cavity to the first outlet channel and the second outlet channel. The reset component can drive the movable component to move and disconnect the second outlet channel from the first cavity. The first outlet channel includes a water passage cavity and a mixing and foaming cavity sequentially connected along the water flow direction. The outlet area of ​​the water passage cavity gradually decreases along the water flow direction, and its end extends into the mixing and foaming cavity along the water flow direction, with its end cross-sectional area being smaller than that of the mixing and foaming cavity. It also includes an air inlet and a liquid inlet respectively connected to the mixing and foaming cavity, so that water entering the mixing and foaming cavity from the water passage cavity can mix and foam with air entering from the air inlet and foaming liquid entering from the liquid inlet.

[0007] Furthermore, the water passage cavity includes an inlet section, a guide section, and an outlet section arranged sequentially along the water flow direction. The inner diameter of the guide section gradually decreases along the water flow direction, and the inner diameter of the inlet section is larger than the inner diameter of the outlet section.

[0008] Furthermore, the switching valve body includes a main body section, an inlet section, a first outlet section, and a second outlet section respectively connected to the main body section. The mounting cavity is disposed in the main body section, the liquid inlet channel is disposed in the inlet section, the first liquid outlet channel is disposed in the first outlet section, and the second liquid outlet channel is disposed in the second outlet section.

[0009] Furthermore, it also includes a liquid outlet sleeve disposed in the first water outlet section, wherein the first liquid outlet channel is disposed in the liquid outlet sleeve and communicates with the first cavity.

[0010] Furthermore, the outer periphery of the liquid outlet sleeve is provided with a plurality of clearance grooves that communicate with the mixing and foaming chamber, and the air inlet and liquid inlet are respectively connected to the mixing and foaming chamber through the clearance grooves.

[0011] Furthermore, the first liquid outlet channel and the second liquid outlet channel are arranged opposite each other on both sides of the liquid inlet channel.

[0012] Furthermore, the movable component includes a switching shaft movably disposed in the mounting cavity, a flow-limiting block disposed at the front end of the switching shaft near the first liquid outlet channel, a first sealing ring sleeved on the rear end of the switching shaft and sealingly connected to the inner wall of the mounting cavity, and a second sealing ring sleeved on the switching shaft and located at the front end of the first sealing ring. The inner wall of the mounting cavity is provided with a first abutting portion and a second abutting portion at intervals, and the first cavity is formed between the first abutting portion and the second abutting portion. When the switching shaft moves to the point where the second sealing ring abuts against the second abutting portion, the second liquid outlet channel is disconnected from the first cavity, and the flow-limiting block is located in front of the first abutting portion.

[0013] Furthermore, the flow limiting block is provided with multiple water passage holes. When the switching shaft moves to the point where the flow limiting block abuts against the first abutting part, the second sealing ring disengages from the second abutting part, and the second liquid outlet channel communicates with the first cavity. The liquid inlet channel can transport liquid through the first cavity to the first liquid outlet channel and the second liquid outlet channel.

[0014] A toilet includes a toilet body and a water tank. The toilet body is provided with a bowl, a brush ring interface, and a spray interface. The water tank is located at the rear end of the toilet body and includes a water storage chamber disposed therein. The toilet body is characterized by further including a water outlet switching device as described in any of the above embodiments, and the water tank further includes a liquid storage chamber for storing foaming liquid, which is disposed at a distance from the water storage chamber. The liquid inlet is connected to the liquid storage chamber.

[0015] Furthermore, it also includes a control switch connected between the liquid inlet and the liquid storage chamber. The control switch is provided with a liquid inlet and a liquid outlet. The liquid inlet is connected to the liquid storage chamber via a hose, and the liquid outlet is connected to the liquid inlet via a hose.

[0016] As can be seen from the above description of this utility model, compared with the prior art, the beneficial effects of this utility model are as follows: This application defines the structure of the water outlet switching device, sets an air inlet and a liquid inlet on the switching valve body that communicate with the mixing and foaming chamber, and further defines the structure of the first liquid outlet channel, setting a water passage chamber with a gradually decreasing liquid passage area, so that the water entering the mixing and foaming chamber from the water passage chamber can form a Venturi effect, and then mix with the air entering from the air inlet and the foaming liquid entering from the liquid inlet, and then flow out from the water outlet end of the first liquid outlet channel and spray foam liquid onto the pot surface through the brush ring connector to achieve the foam odor isolation function; the overall structure is simple and reliable, only requiring the addition of a control switch and a liquid storage chamber, without the need to add an air pump or water pump, to achieve the foam shield function on the basis of satisfying the flushing function, greatly reducing production costs. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a toilet;

[0018] Figure 2 This is a schematic diagram of the water outlet switching device;

[0019] Figure 3 This is a sectional view of the water outlet switching device.

[0020] Figure 4 for Figure 3 Enlarged view of some of the structures in the image;

[0021] Figure 5 A schematic diagram showing the state of the water outlet device in foam shield foaming mode;

[0022] Figure 6A schematic diagram showing the state of the water outlet device in water outlet mode;

[0023] Figure 7 This is a schematic diagram of the control switch.

[0024] In the diagram, 1-toilet body, 2-water tank, 3-water outlet switching device, 4-water pump, 5-control switch, 6-dispensing sleeve, 11-boiler surface, 12-brush ring connector, 13-jet connector, 21-water storage chamber, 22-liquid storage chamber, 23-inlet valve, 31-switching valve body, 311-liquid inlet channel, 312-installation cavity, 3121-first contact part, 3122-second contact part, 313-first dispensing channel, 3131-water passage chamber, 3132-mixing and foaming chamber, 3133-inlet section, 3134-guide section, 3135-outlet section, 314-second dispensing channel, 315-water outlet. -Main body section, 316-Inlet section, 317-First outlet section, 318-Second outlet section, 32-Moving component, 321-Switching shaft, 3211-First mounting groove, 3212-Second mounting groove, 322-Flow limiting block, 3221-Water passage hole, 323-First sealing ring, 324-Second sealing ring, 33-Reset component, 331-Positioning column, 332-Positioning cavity, 333-Reset spring, 334-Third sealing ring, 34-Air inlet, 35-Liquid inlet, 36-Anti-siphon overflow outlet, 37-First cavity, 51-Liquid inlet, 52-Liquid outlet, 61-Relieving groove. Detailed Implementation

[0025] The present invention will be further described below through specific embodiments.

[0026] Reference Figures 1 to 7 As shown, a toilet includes a toilet body 1, a water tank 2, a water outlet switching device 3, a water pump 4, and a control switch 5.

[0027] The toilet body 1 is equipped with a pot surface 11, a brush ring connector 12, and a spray connector 13.

[0028] The water tank 2 is located at the rear end of the toilet body 1, and includes a water storage chamber 21 and a liquid storage chamber 22 spaced apart inside it, and a water inlet valve 23 located in the water storage chamber 21. The liquid storage chamber 22 is used to store foaming liquid.

[0029] The water outlet switching device 3 is installed in the toilet body 1, located on one side of the water tank 2, and includes a switching valve body 31, a moving component 32, a reset component 33, an air inlet 34, and a liquid inlet 35.

[0030] The switching valve body 31 internally comprises an inlet channel 311, an mounting cavity 312, a first outlet channel 313, and a second outlet channel 314. It includes a main body section 315, an inlet section 316 connected to the lower end of the main body section 315, a first outlet section 317, and a second outlet section 318. The mounting cavity 312 is located within the main body section 315, the inlet channel 311 is located within the inlet section 316, the first outlet channel 313 is located within the first outlet section 317, and the second outlet channel 314 is located within the second outlet section 318. In the second water outlet section 318, the first liquid outlet channel 313 and the second liquid outlet channel 314 are arranged opposite each other on both sides of the liquid inlet channel 311. Specifically, the water outlet end of the first liquid outlet channel 313 is connected to the brush ring connector 12 through a hose, the water outlet end of the second liquid outlet channel 314 is connected to the spray connector 13 through a hose, the water inlet end of the liquid inlet channel 311 is connected to the water pump 4 through a hose, and the water pump 4 is then connected to the water storage chamber 21 through a hose. Furthermore, the switching valve body 31 is also provided with an anti-siphon overflow port 36 located above the first liquid outlet channel 313.

[0031] The movable component 32 is movably disposed in the mounting cavity 312, forming a first cavity 37 with the switching valve body 31. This allows the inlet channel 311 to transport liquid through the first cavity 37 to the first outlet channel 313 and the second outlet channel 314. It includes a switching shaft 321 movably disposed in the mounting cavity 312, a flow-limiting block 322 disposed at the front end of the switching shaft 321 near the first outlet channel 313, a first sealing ring 323 sleeved on the rear end of the switching shaft 321 and sealingly connected to the inner wall of the mounting cavity 312, and a second sealing ring 324 sleeved on the switching shaft 321 and located at the front end of the first sealing ring 323. The inner wall of the mounting cavity 312 is provided with a first abutment portion 3121 and a second abutment portion 3122 spaced apart, and the first abutment portion 3121 and the second abutment portion 3122 form the first cavity 37. When the switching shaft 321 moves to the point where the second sealing ring 324 abuts against the second abutment portion 3122, the second liquid outlet channel 314 is disconnected from the first cavity 37, and the flow limiting block 322 is located in front of the first abutment portion 3121. Specifically, the flow limiting block 322 is provided with multiple water passage holes 3221 on its circumference. When the switching shaft 321 moves to the point where the flow limiting block 322 abuts against the first abutment portion 3121, the second sealing ring 324 disengages from the second abutment portion 3122, and the second liquid outlet channel 314 communicates with the first cavity 37. The liquid inlet channel 311 can transport liquid through the first cavity 37 to the first liquid outlet channel 313 and the second liquid outlet channel 314. Furthermore, the outer circumference of the switching shaft 321 is provided with a first mounting groove 3211 and a second mounting groove 3212 for mounting the first sealing ring 323 and the second sealing ring 324.

[0032] The reset assembly 33 is disposed between the rear end of the switching shaft 321 and the end of the switching valve body 31. It includes a positioning post 331 extending outward from the end of the switching valve body 31 to the outside of the mounting cavity 312, a positioning cavity 332 extending inward from the rear end of the switching shaft 321, a reset spring 333 connected at one end to the positioning post 331 and extending to the inner wall of the positioning cavity 332, and a third sealing ring 334 sleeved on the outer periphery of the positioning post 331 and sealingly connected to the inner wall of the mounting cavity 312. When the water pressure in the switching valve body 31 exerts a thrust on the switching shaft 321 less than the pressure of the reset spring 333 on the switching shaft 321 or when there is no other external force, the reset spring 333 causes the second sealing ring 324 to seal against the second abutment part 3122, ensuring that the second liquid outlet channel 314 is disconnected from the first cavity 37.

[0033] A control switch 5 is located between the liquid inlet 35 and the liquid storage chamber 22. The control switch 5 can be a solenoid valve switch, which is fixedly connected to the water tank 2 or the toilet seat. It is equipped with a liquid inlet 51 and a liquid outlet 52. The liquid inlet 51 is connected to the liquid storage chamber 22 via a hose, and the liquid outlet 52 is connected to the liquid inlet 35 via a hose. The connection and disconnection between the liquid inlet 35 and the liquid storage chamber 22 are controlled by the setting of the control switch 5.

[0034] The first liquid outlet channel 313 includes a water passage cavity 3131 and a mixing and foaming cavity 3132 arranged sequentially along the water flow direction. The air inlet 34 and liquid inlet 35 are respectively connected to the mixing and foaming cavity 3132. Specifically, the liquid outlet area of ​​the water passage cavity 3131 gradually decreases along the water flow direction, and its end cross-sectional area is smaller than that of the mixing and foaming cavity 3132. It includes a water inlet section 3133, a guide section 3134, and a water outlet section 3135 arranged sequentially along the water flow direction. The inner diameter of the guide section 3134 is along the water flow direction. The inner diameter of the water inlet section 3133 is larger than that of the water outlet section 3135, and the inner diameter of the mixing chamber 3132 is larger than that of the water outlet section 3135. By limiting the structure of the water passage chamber 3131, the water flow entering the mixing foaming chamber 3132 through the water passage chamber 3131 forms a Venturi effect. After mixing with the air entering from the air inlet 34 and the foaming liquid entering from the liquid inlet 35, the foaming liquid flows out from the water outlet end of the first liquid outlet channel 313 and is sprayed onto the pot surface 11 through the brush ring connector 12 to achieve the foam odor isolation function.

[0035] In one embodiment of this application, the first liquid outlet channel 313 and the first water outlet section 317 are integrally formed; in another embodiment of this application, it further includes a liquid outlet sleeve 6 detachably disposed in the first water outlet section 317, the first liquid outlet channel 313 is disposed in the liquid outlet sleeve 6 and communicates with the mounting cavity 312, and the outer periphery of the liquid outlet sleeve 6 is formed with a plurality of clearance grooves 61 that communicate with the mixing foaming cavity 3132, wherein the air inlet 34 and the liquid inlet 35 are respectively communicated with the mixing foaming cavity 3132 through the relative clearance grooves 61, so that air and foaming liquid enter the mixing foaming cavity 3132 through the air inlet 34 and the liquid inlet 35 respectively.

[0036] Its working principle is as follows:

[0037] When in foam shield foaming mode, control switch 5 is turned on, and water pump 4 draws water from water storage chamber 21 and enters switching valve body 31 through liquid inlet channel 311. At this time, the water pressure in switching valve body 31 pushes the switching shaft 321 less than the pressure of return spring 333 on switching shaft 321. The second sealing ring 324 and the second abutment part 3122 maintain a sealed abutment. Water flows through the first cavity 37 into the first liquid outlet channel 313. The water entering the first liquid outlet channel 313 flows through water cavity 3131 into mixing foaming cavity 3132 to form Venturi effect. After mixing with air entering from air inlet 34 and foaming liquid entering from liquid inlet 35, it flows out from the water outlet end of the first liquid outlet channel 313 and sprays foam liquid onto the pot surface 11 through brush ring connector 12, forming a layer of odor-proof foam liquid on the water seal to achieve the foam odor-proof function.

[0038] When in flushing mode, control switch 5 is closed, and water pump 4 draws water from storage chamber 21, which enters switching valve body 31 through inlet channel 311. At this time, the water pressure in switching valve body 31 exerts less force on switching shaft 321 than the pressure of return spring 333 on switching shaft 321. The second sealing ring 324 and the second abutment part 3122 maintain a sealed contact. Water flows through first chamber 37 into first outlet channel 313, then flows through water chamber 3131 and mixing foaming chamber 3132, and flows out from the outlet end of first outlet channel 313 through brush ring connector 12 to wash the pot surface 11. Then, the power of water pump 4 is increased. At this time, the water pressure in switching valve body 31 exerts more force on switching shaft 321 than the pressure of return spring 333 on switching shaft 321, causing switching shaft 321 to move. The second liquid outlet channel 314 is connected to the first cavity 37. Water enters the second liquid outlet channel 314 from the inlet channel 311 and flows out through the spray connector 13 to spray the toilet. At the same time, a small amount of water flows into the first liquid outlet channel 313 and is sprayed onto the pot surface 11 through the brush ring connector 12 to continue washing the pot surface 11. After the dirt is flushed off, the power of the water pump 4 decreases. At this time, the water pressure in the switching valve body 31 pushes the switching shaft 321 less than the pressure of the return spring 333 on the switching shaft 321. The switching shaft 321 is reset under the action of the return spring 333. The second sealing ring 324 and the second abutment part 3122 seal and abut against each other. The second liquid outlet channel 314 is disconnected from the first cavity 37. Water flows out from the first liquid outlet channel 313 and washes the pot surface 11 again through the brush ring connector 12 to replenish the water seal.

[0039] This application defines the structure of the water outlet switching device 3, sets an air inlet 34 and a liquid inlet 35 on the switching valve body 31, and further defines the structure of the first liquid outlet channel 313, setting a water passage cavity 3131 with a gradually decreasing liquid passage area, so that the water entering the mixing foaming cavity 3132 from the water passage cavity 3131 can form a Venturi effect, and then mix with the air entering from the air inlet 34 and the foaming liquid entering from the liquid inlet 35, and then flow out from the water outlet end of the first liquid outlet channel 313 and spray foam liquid onto the pot surface 11 through the brush ring connector 12 to achieve the foam odor isolation function; the overall structure is simple and reliable, only requiring the addition of a control switch 5 and a liquid storage cavity 22, without the need to add an air pump or water pump, and can achieve the foam shield function on the basis of satisfying the flushing function, greatly reducing the production cost.

[0040] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model application and the contents of the specification should still fall within the scope of the present utility model application.

Claims

1. A water outlet switching device, comprising a switching valve body, a movable component, and a reset component, wherein the switching valve body is provided with an inlet channel, an mounting cavity, a first outlet channel, and a second outlet channel; the movable component is movably disposed in the mounting cavity, forming a first cavity with the switching valve body, the inlet channel being capable of conveying liquid through the first cavity to the first outlet channel and the second outlet channel; the reset component is capable of driving the movable component to move and disconnect the second outlet channel from the first cavity, characterized in that: The first liquid outlet channel includes a water passage chamber and a mixing foaming chamber connected sequentially along the water flow direction. The liquid outlet area of ​​the water passage chamber gradually decreases along the water flow direction, and its end extends into the mixing foaming chamber along the water flow direction, and its end cross-sectional area is smaller than the cross-sectional area of ​​the mixing foaming chamber. It also includes an air inlet and a liquid inlet connected to the mixing foaming chamber respectively, so that the water entering the mixing foaming chamber from the water passage chamber can mix and foam with the air entering from the air inlet and the foaming liquid entering from the liquid inlet.

2. The water outlet switching device according to claim 1, characterized in that: The water passage cavity includes an inlet section, a guide section, and an outlet section arranged sequentially along the water flow direction. The inner diameter of the guide section gradually decreases along the water flow direction, and the inner diameter of the inlet section is larger than that of the outlet section.

3. The water outlet switching device according to claim 1, characterized in that: The switching valve body includes a main body section, an inlet section, a first outlet section and a second outlet section respectively connected to the main body section, the mounting cavity is disposed in the main body section, the liquid inlet channel is disposed in the inlet section, the first liquid outlet channel is disposed in the first outlet section and the second liquid outlet channel is disposed in the second outlet section.

4. The water outlet switching device according to claim 3, characterized in that: It also includes a liquid outlet sleeve disposed in the first water outlet section, wherein the first liquid outlet channel is disposed in the liquid outlet sleeve and communicates with the first cavity.

5. A water switching device according to claim 4, characterized in that: The outer periphery of the liquid outlet sleeve is provided with multiple clearance grooves that communicate with the mixing and foaming chamber. The air inlet and liquid inlet are respectively connected to the mixing and foaming chamber through the clearance grooves.

6. The water outlet switching device according to claim 1, characterized in that: The first liquid outlet channel and the second liquid outlet channel are arranged opposite each other on both sides of the liquid inlet channel.

7. The water outlet switching device according to claim 1, characterized in that: The movable component includes a switching shaft movably disposed in the mounting cavity, a flow-limiting block disposed at the front end of the switching shaft near the first liquid outlet channel, a first sealing ring sleeved on the rear end of the switching shaft and sealingly connected to the inner wall of the mounting cavity, and a second sealing ring sleeved on the switching shaft and located at the front end of the first sealing ring. The inner wall of the mounting cavity is provided with a first abutting part and a second abutting part at intervals, and the first cavity is formed between the first abutting part and the second abutting part. When the switching shaft moves to the point where the second sealing ring abuts against the second abutting part, the second liquid outlet channel is disconnected from the first cavity, and the flow-limiting block is located in front of the first abutting part.

8. A water switching device according to claim 7, characterized in that: The flow limiting block is provided with multiple water passage holes. When the switching shaft moves to the point where the flow limiting block abuts against the first abutting part, the second sealing ring disengages from the second abutting part, and the second liquid outlet channel communicates with the first cavity. The liquid inlet channel can transport liquid through the first cavity to the first liquid outlet channel and the second liquid outlet channel.

9. A toilet, comprising a toilet body and a water tank, wherein the toilet body is provided with a bowl, a brush seat interface, and a spray interface; the water tank is located at the rear end of the toilet body and includes a water storage chamber disposed therein; characterized in that: It also includes a water switching device as described in any one of claims 1 to 8, which is installed on the toilet body. The water tank also includes a liquid storage chamber for storing foaming liquid, which is spaced apart from the water storage chamber. The liquid inlet is connected to the liquid storage chamber.

10. A toilet according to claim 9, characterized in that: It also includes a control switch connected between the liquid inlet and the liquid storage chamber. The control switch is provided with a liquid inlet and a liquid outlet. The liquid inlet is connected to the liquid storage chamber via a hose, and the liquid outlet is connected to the liquid inlet via a hose.

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