Waterway switching valve suitable for intelligent pedestal pan

Abstract

The waterway switching valve comprises a shell, the shell comprises a water inlet part, a first water outlet part, a second water outlet part and a water inlet cavity, and the first water outlet part and the second water outlet part are arranged and communicated with the upper end and the lower end of the water inlet cavity respectively; the water inlet part is communicated with the side part of the water inlet cavity and is arranged between the two water outlet parts; the floating part is movably arranged in the water inlet cavity and switches to open the first water outlet part or the second water outlet part under the action of water flow; the floating piece comprises a plugging pressure-bearing surface, a floating pressure-bearing surface and an extension part; when the plugging pressure-bearing surface or the floating pressure-bearing surface is subjected to the action of water flow, the floating piece moves downwards to open the first water outlet part or moves upwards to open the second water outlet part in the water inlet cavity along with the plugging pressure-bearing surface or the floating pressure-bearing surface; according to the technical scheme, the flushing device is simple in structure, small in overall size, easy and convenient to manufacture, easy to implement and low in cost, and the problem that the response switching speed of the main flushing function and the brush ring flushing function of an existing toilet is low is mainly solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bathrooms, and in particular to a water channel switching valve suitable for an intelligent toilet. Background Art

[0002] The water tank of the existing intelligent toilet mostly uses a water pump to pump the water in the water tank to the brush ring waterway and the main flushing waterway in sequence. It uses the position change of the outer float in the water tank to switch and control the water flow to the brush ring waterway or the main flushing waterway. That is, when the float is at a preset water level, a lever switching mechanism is used to automatically close the main flushing waterway, so that the brush ring flushing is performed first, and the water in the water tank is continuously pumped out, the water level drops, and the position of the float also drops accordingly. After reaching the preset position, the lever switching mechanism is linked to close the brush ring waterway, so that the main flushing waterway is automatically opened to discharge water, and finally the water in the water tank is slowly waited for to be pumped out before the water seal is automatically replenished to prevent the toilet pit from overflowing. This structure is not only complicated but also usually too large in size, which occupies too much space inside the water tank, and the reduced water storage capacity often affects the flushing potential energy of the toilet.

[0003] To this end, the researchers have improved it into a water channel mechanism with a small volume, which uses internal floats and limiting structures to achieve switching. When the upper brush circle waterway is to be opened (open all the way), the float is limited and blocked in the main flushing waterway at the lower end (closed all the way) through the water pressure linkage limiting structure of the water pump (to prevent the float from moving upward due to buoyancy). Conversely, when the main flushing waterway at the lower end is to be opened, the water pump is turned off to reset and unlock the linkage limiting structure, and the float is moved upward due to buoyancy to close the upper brush circle waterway. Although this structural method can solve the above problems, it still has certain shortcomings: first, the structure is very complicated and requires the limit structure to limit the float in order to achieve complete switching of the two functions. The subsequent switching requires turning off the water pump and waiting for the water in the shell to be drained. The float loses buoyancy and moves down before the upper brush circle water channel can be opened again for water replenishment or the next cycle, and the flushing function switching speed is slow; second, the main flushing water potential energy is inevitably insufficient, that is, due to insufficient main flushing time or small water flow, it is easy for dirt to pass over the top of the toilet siphon port, causing the dirt to flow back into the toilet pit, resulting in poor sanitary conditions; third, the silencing effect is poor. After the main flush is completed, the end water flow usually produces noise, affecting the product experience.

[0004] In summary, the existing water circuit switching valve for toilet water tank needs to be further improved. Summary of the invention

[0005] The present invention provides a water circuit switching valve suitable for an intelligent toilet, which has a simple structure, a small overall volume, is easy to manufacture, easy to implement and has a low cost. It mainly solves the problem of slow response switching speed of the main flushing and brush ring flushing functions of the existing toilet, and mainly adopts the following technical solutions:

[0006] A waterway switching valve suitable for an intelligent toilet, characterized in that it comprises a shell, which comprises a water inlet, a first water outlet, a second water outlet and a water inlet chamber, wherein the first and second water outlets are respectively arranged and connected to the upper and lower ends of the water inlet chamber; the water inlet is connected to the side of the water inlet chamber and is arranged between the two water outlets; a floating member is movably installed in the water inlet chamber, and switches to open the first water outlet or the second water outlet under the action of water flow; the floating member comprises a blocking pressure-bearing surface, a floating pressure-bearing surface and an extension; when the blocking pressure-bearing surface or the floating pressure-bearing surface is acted upon by water flow, the floating member moves downward in the water inlet chamber to open the first water outlet or moves upward to open the second water outlet; the extension is formed by extending the floating pressure-bearing surface toward the second water outlet; the extension is inserted into or separated from the second water outlet as the floating member moves in the water inlet chamber, and in the inserted state, the water flow area between the extension and the second water outlet is smaller than the water flow area between the floating member and the water inlet chamber wall.

[0007] Preferably, when the extension portion is inserted into the second water outlet portion, the water flow entering the water inlet portion acts on the sealing pressure-bearing surface and drives the floating member to move toward the second water outlet portion, so that the floating pressure-bearing surface is limited and pressed against the lower bottom wall of the water inlet cavity.

[0008] Preferably, the floating pressure-bearing surface extends toward the second water outlet to form a limited stop cover, and the floating pressure-bearing surface is limited by the limited stop cover to be pressed against the lower bottom wall of the shell and cover the second water outlet; at least one drainage port is opened on the cover wall of the limited stop cover, and the drainage port is used to connect the interior of the limited stop cover with the water inlet chamber.

[0009] Preferably, the second water outlet portion extends toward the floating member to form a water-blocking ring body, and the water-blocking ring body is correspondingly matched with the inner wall of the limit stop cover to form a pressure relief space.

[0010] Preferably, the extension portion includes a first water retaining section and a second water retaining section, the first water retaining section is used to be inserted into or disconnected from the second water outlet portion, the second water retaining section is located above the first water retaining section and the water blocking ring body, a guide section is formed between the second water retaining section and the first water retaining section, and the guide section forms a water-passing gap relative to the guide wall on the outer periphery of the top of the water blocking ring body.

[0011] Preferably, the guide section and the guide wall are arranged in an inclined or arc shape respectively.

[0012] Preferably, the floating member is also provided with a quick-sealing groove, which is located between the sealing pressure-bearing surface and the floating pressure-bearing surface, and the axis of the quick-sealing groove is parallel to the axis of the water inlet portion. It is used to drive the floating member to move quickly toward the first water outlet portion when the floating member is separated from the second water outlet portion and is impacted by the water flow entering the water inlet portion.

[0013] Preferably, the quick-sealing groove is arranged through the floating member, and its water flow area is larger than the water flow area of ​​the water inlet portion.

[0014] Preferably, it also includes a guiding mechanism, which includes a sliding bar arranged on the outer wall of the floating member, and a sliding groove arranged on the inner wall of the shell, and the sliding bar and the sliding groove are respectively extended in the direction of the first water outlet and the second water outlet; when the floating member moves in the shell, the sliding bar slides in the sliding groove to enable the floating member to move toward the first water outlet or the second water outlet.

[0015] Preferably, the sealing pressure-bearing surface is recessed to form at least two empty grooves, and the empty grooves are arranged toward the first water outlet.

[0016] It can be seen from the above description of the present invention that, compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a water circuit switching valve suitable for intelligent toilets, which has a simple structure, a small overall volume, is easy to manufacture, easy to implement and has a low cost, and mainly solves the problem of slow response switching speed of the main flushing and brush ring flushing functions of existing toilets. The technical solution of the present invention breaks the disadvantages of the existing water circuit switching valve having a complex structure and requiring the use of a limit structure in conjunction with a float to switch the main flushing and brush ring flushing functions. It directly abandons the design of the limit structure, and only requires a simple combination of a shell structure and a floating part. The floating part can be linked to realize function switching by controlling the water pressure change; specifically:

[0018] First, the water discharged from the side water inlet will replace the limiting function of the limiting structure (no need to reset and unlock in the later stage), and the water flow pressure will continuously impact and push against the top of the blocking pressure-bearing surface. During this process, the floating part will not move up due to the impact of the water flow, and the upper first water outlet will be kept open to flush the circle. This water pressure impact and pushing method cannot be achieved by simple water flow impact. The water inlet needs to be arranged on the side of the water inlet cavity and between the two water outlets, and the top of the floating part needs to have a blocking pressure-bearing surface that acts on the water flow. It has strict requirements on the design and arrangement of each structure and needs to be clever enough. In this way, the water channel can be opened in one way and closed in the other way through the impact of the water flow. The whole process does not require a limiting structure, and the overall structure volume can be compressed to a very small size.

[0019] Secondly, since the extended part of the floating part is inserted into the second water outlet at the lower end, when the water pump is turned off, water will accumulate around the floating part to generate buoyancy and quickly float to a certain height, quickly move up to open the second water outlet at the lower end, and the main flushing function will be quickly turned on. In this way, since the switching speed is fast enough, the main flushing water of the second water outlet can quickly combine with the rotating water of the brush ring water channel that has not been drained from the toilet pot surface. The two water flows combine with each other to form stronger water potential energy, the one-time water flow is also larger, the flushing effect is stronger, and the dirt can be easily driven over the top of the toilet siphon port. At the end, sanitary conditions are guaranteed; then when it is necessary to open the first water outlet to replenish water, as the buoyancy decreases, the floating part moves down to a certain height. There is no need to wait for the accumulated water to be drained. During the downward movement of the floating part, its blocking pressure-bearing surface will be quickly reduced by the impact of the side water flow to open the first water outlet, so as to facilitate the final water replenishment function. Also, because the switching speed is fast enough, the first water outlet is opened quickly, and the replenishment water flow of the first water outlet can be quickly combined with the main flushing water that has not been drained from the toilet pot surface. In this way, the noise at the end of the main flushing can be buffered, the volume is reduced, and the quietness is excellent.

[0020] Finally, due to the water flow area of ​​a certain gap between the extension part and the second water outlet part, water will not accumulate around the floating part in the normal state, and the floating part can fall to the bottom of the shell; and the water flow area between the extension part and the second water outlet part is smaller than the water flow area between the water inlet cavity walls, so that the water flow rate discharged into the water inlet cavity is smaller than the water flow rate discharged, and the water around the floating part can have a certain amount of storage to generate buoyancy;

[0021] In summary, the structural design of the water circuit switching valve described in the present invention is very clever. By pressing the water pump to control the water inlet and outlet, the switching valve can respond quickly and switch rapidly at the same frequency. The entire flushing process can be started and stopped instantly, and the switching speed is extremely fast without any delay. It can also remain silent throughout the process, providing an excellent experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 It is an overall exploded view of an embodiment of the present invention;

[0025] Figure 3 The overall cross-sectional view of the toilet brush ring during flushing according to the embodiment of the present invention Figure 1 ;

[0026] Figure 4 for Figure 3 A partial enlarged view of

[0027] Figure 5 The overall cross-sectional view of the toilet brush ring during flushing according to the embodiment of the present invention Figure 2 ;

[0028] Figure 6 It is a schematic diagram of a toilet according to an embodiment of the present invention before switching from a brush ring flushing mode to a main flushing mode;

[0029] Figure 7 It is a cross-sectional schematic diagram of the toilet during main flushing according to an embodiment of the present invention.

[0030] The following are the descriptions of the reference numerals:

[0031] 1. Shell 1; 11. Water inlet 11; 12. First water outlet 12; 13. Second water outlet 13; 131. Water blocking ring 131; 131a. Guide wall 131a; 14. Water inlet cavity 14; 1a. Lower enclosure 1a;

[0032] 2. Floating member 2; 21. Blocking pressure-bearing surface 21; 211. Empty groove 211; 22. Floating pressure-bearing surface 22; 221. Position-limiting stopper 221; 221A. Drainage port 221A; 23. Extension 23; 231. First water retaining section 231; 232. Second water retaining section 232; 233. Drainage section 233; 24. Quick-sealing groove 24;

[0033] 31. Slide bar 31; 32. Slide groove 32; 4. Water supply component; A / B. Water flow area; C. Pressure relief space C. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0036] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0037] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0038] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0039] See also Figures 1 to 7 .

[0040] The present embodiment provides a water circuit switching valve suitable for an intelligent toilet, which has a simple structure, a small overall volume, is easy to manufacture, easy to implement and has a low cost, and mainly solves the problem of slow response switching speed of the main flushing and brush ring flushing functions of the existing toilet; the water circuit switching valve body is very cleverly designed, and it can realize the switching of the brush ring flushing and main flushing functions by cooperating with the change of water pressure, without cooperating with the existing limiting structure (such as a lever-type limiting structure, a flip-type limiting structure) to limit and fix the float or reset and unlock the float, and has a fast response switching speed, excellent mute effect, and strong flushing potential energy; see Figure 1 and Figure 2 The waterway switching valve body mainly includes a housing 1, a floating part 2, and a water supply component 4, wherein:

[0041] Shell 1, see Figure 3, which includes a water inlet 11, a first water outlet 12 (for brush ring flushing or water replenishment and sealing), a second water outlet 13 (for main flushing) and a water inlet cavity 14, wherein the second water outlet 13 is mounted on the lower sealing shell 1a at the bottom of the shell 1; the first water outlet 12 and the second water outlet 13 are respectively arranged and connected to the upper and lower ends of the water inlet cavity 14; the water inlet 11 is connected to the side of the water inlet cavity 14 and is arranged between the two water outlets; the design of the three components is extremely ingenious, and the water inlet 11 is located between the two water outlets. When the water pump is working, the water flow (the water outlet direction of the water inlet 11) can continuously impact from the right wall surface of the inner wall of the water inlet chamber 14 to the left wall surface to form an impact water flow, and the floating member 2 is arranged in the water inlet chamber 14 and is located below the impact water flow under normal conditions. In this way, as long as the impact water flow is discharged from the water inlet 11 into the water inlet chamber 14, the impact water flow will be divided into two, one leading to the first water outlet 12 for discharge, and the other leading to the second water outlet 13 to directly act on the floating member 2; and,

[0042] The floating member 2 is movably mounted in the water inlet chamber 14, and switches to open the first water outlet 12 or the second water outlet 13 under the action of water flow (water buoyancy or the impact water flow); the floating member 2 includes a blocking pressure-bearing surface 21 at the upper end, a floating pressure-bearing surface 22 at the lower end, and an extension portion 23; when the blocking pressure-bearing surface 21 or the floating pressure-bearing surface 22 is acted upon by water flow (impact water flow and water buoyancy, respectively), the floating member 2 moves downward in the water inlet chamber 14 to open the first water outlet 12 or moves upward to open the second water outlet 13; the extension portion 23 is formed by extending the floating pressure-bearing surface 22 toward the second water outlet 13; the extension portion 23 is inserted into or separated from the second water outlet 13 as the floating member 2 moves in the water inlet chamber 14, and in the inserted state, the water flow area A between the extension portion 23 and the second water outlet 13 is smaller than the water flow area B between the floating member 2 and the wall of the water inlet chamber 14, and in the separated state, the extension portion 23 will move away from the second water outlet 13 and open it.

[0043] In this embodiment, see Figure 3 and Figure 4 Since there is a water flow area A with a certain gap between the extension part 23 and the second water outlet part 13, water will not accumulate on the surrounding side of the floating member 2 in the normal state. For example, the water stored in the water inlet chamber 14 will be discharged from the gap, ensuring that the floating member 2 can be placed at the bottom of the shell 1 without any floating; and the water flow area A between the extension part 23 and the second water outlet part 13 is smaller than the water flow area B between the walls of the water inlet chamber 14. In this way, the water flow rate discharged into the water inlet chamber 14 is smaller than the water flow rate discharged. When the floating member 2 needs to generate buoyancy, the water on its surrounding side can store a certain amount of water flow to generate buoyancy, thereby achieving appropriate small gap drainage to ensure the placement of the float, and accumulating a certain amount of water reserves when buoyancy is needed.

[0044] In this embodiment, see Figure 3 and Figure 4When the extension part 23 is inserted into the second water outlet 13, the water flow entering the water inlet 11 acts on the blocking pressure-bearing surface 21 and drives the floating member 2 to move toward the second water outlet 13, so that the floating pressure-bearing surface 22 is limited and pressed against the lower bottom wall of the housing 1. The floating pressure-bearing surface 22 extends toward the second water outlet 13 to form a limited stopper 221. The floating pressure-bearing surface 22 is limited and pressed against the lower bottom wall of the housing 1 through the limited stopper 221 and covers the second water outlet 13. At least one drainage port 221A is opened on the cover wall of the limited stopper 221, and the drainage port 221A is used to conduct the inside of the limited stopper 221 with the water inlet chamber 14.

[0045] In this embodiment, the function of the limit baffle 221 is to control the water flow entering the second water outlet 13 to prevent the gap between the extension portion 23 and the second water outlet 13 from draining too quickly and failing to generate buoyancy. The water flow can be controlled very stably by guiding water through a drainage port 221A.

[0046] In this embodiment, see Figure 4 The second water outlet 13 extends toward the floating member 2 to form a water-blocking ring 131, and the water-blocking ring 131 corresponds to the inner wall of the limit stop cover 221 to form a pressure-relief space C; the function of the pressure-relief space C is that when the limit stop cover 221 covers the second water outlet 13, the water flow discharged into the limit stop cover 221 through the drainage port 221A will first accumulate and relieve pressure in the pressure-relief space C, and then accumulate to a height exceeding the pressure-relief space C before being discharged into the gap between the extension portion 23 and the second water outlet 13; in this way, even if the impact force of the water flow is very large, the water flow enters the pressure-relief space C through the drainage port 221A to obtain pressure relief and will not impact the entire floating member 2, thereby preventing the floating member 2 from shaking or swinging when there is a large amount of water.

[0047] In this embodiment, see Figure 4 and Figure 5 The extension portion 23 includes a first water retaining section 231 and a second water retaining section 232. The first water retaining section 231 is used to be inserted into or disconnected from the second water outlet 13. The second water retaining section 232 is located above the first water retaining section 231 and the water blocking ring body 131. A guide section 233 is formed between the second water retaining section 232 and the first water retaining section 231. The guide section 233 forms a water-passing gap relative to the guide wall 131a on the top periphery of the water blocking ring body 131. In this embodiment, the guide section 233 and the guide wall 131a are respectively inclined or arc-shaped. The two structural designs are mainly for further decompression of the water flow, that is, after the decompression space C is full of water, the water flow can be discharged from the water-passing gap, the water outlet is smoother and the water pressure is also relieved.

[0048] In this embodiment, see Figure 6The floating member 2 is also provided with a quick-sealing groove 24, which is located between the blocking pressure-bearing surface 21 and the floating pressure-bearing surface 22. The axis of the quick-sealing groove 24 is parallel to the axis of the water inlet 11. When the floating member 2 is separated from the second water outlet 13, it is impacted by the water flow entering the water inlet 11, driving the floating member 2 to move quickly toward the first water outlet 12. The quick-sealing groove 24 is arranged throughout the floating member 2, and its water flow area is larger than the water flow area of ​​the water inlet 11; when the floating member 2 is under the buoyancy of the water accumulated inside, When it moves toward the first water outlet 12 under the action, if the buoyancy is insufficient or the floating displacement speed is slower, the floating member 2 floats to a certain height, and the water entering from the water inlet 11 will quickly penetrate the entire quick-sealing groove 24, and the quick-sealing groove 24 will be quickly filled. The floating member 2 will be subjected to the upward force and move upward to quickly close the first water outlet 12 and fully open the second water outlet 13, and the accumulated water in the water inlet chamber 14 originally used to generate buoyancy will be discharged from the second water outlet 13.

[0049] In the present embodiment, a guiding mechanism is also included, which includes a slide bar 31 provided on the outer wall of the floating member 2 and a slide groove 32 provided on the inner wall of the shell 1, and the slide bar 31 and the slide groove 32 are respectively extended toward the first water outlet 12 and the second water outlet 13; when the floating member 2 moves in the shell 1, the slide bar 31 slides in the slide groove 32, so that the floating member 2 can move toward the first water outlet 12 or the second water outlet 13; that is, in the present embodiment, the floating member 2 floats up or falls down under the guidance of the guiding mechanism, so that the entire floating member 2 is not easy to deviate, and can be Precisely seal the first water outlet 12 and the second water outlet 13; secondly, the design of the guide mechanism can also ensure that the opening of the quick-sealing groove 24 corresponds precisely to the water outlet direction of the water inlet 11, that is, the slide grooves 32 are arranged on both side wings of the axial direction of the water inlet 11, and when the floating member 2 is slidably installed in the slide groove 32 through the slide bar 31, the quick-sealing groove 24 on the floating member 2 will be aligned with the water inlet 11; and, the design of the guide mechanism can also make the entire floating member 2 just located at the center of the water inlet chamber 14, that is, ensure that the water flow area B of the outer periphery of the entire floating member 2 and the inner circumferential wall of the water inlet chamber 14 remain equal.

[0050] In this embodiment, the sealing pressure-bearing surface 21 is recessed to form at least two empty grooves 211, and the empty grooves 211 are arranged toward the first water outlet 12. The setting of the empty grooves 211 can mainly be used to place sealing rings, or the sealing rings may not be set to appropriately relieve the pressure of the water flowing through the empty grooves 211.

[0051] The working principle and use process of the present invention:

[0052] When installing, see Figure 2 and Figure 3First, install the floating member 2 in the water inlet chamber 14, and slide the slide bar 31 on the floating member 2 into the slide groove 32 on the inner wall surface of the water inlet chamber 14 to ensure that the quick sealing groove 24 of the floating member 2 can be aligned with the water inlet portion 11 of the shell 1; then, the second water outlet portion 13 of the lower shell 1a is plug-connected with the first water retaining section 231 of the floating member 2, and the entire lower shell 1a is fixedly installed on the bottom of the shell 1 to complete the sealing of the water inlet chamber 14 of the shell 1; finally, the water inlet portion 11 of the shell 1 and the water supply component 4 (including a water pump not shown in the figure) are installed, and the first water outlet portion 12 is connected to the brush ring water pipe of the toilet, and the second water outlet portion 13 is connected to the main flushing pipe of the toilet; the number of structural parts of the above water circuit switching valve is very small, and the installation can be completed without a lot of accessories, the installation efficiency is very high, and the cost is also low;

[0053] After installation is complete, see Figures 3 to 5 At this time, the floating member 2 is located in the water inlet chamber 14 and is in a normal state; the floating member 2 is located at the bottom wall of the water inlet chamber 14, wherein the limit stop cover 221 is in contact with the bottom wall of the water inlet chamber 14 and covers the water blocking ring 131 and the second water outlet 13. The limit stop cover 221 can effectively limit the depth of the first water retaining section 231 inserted into the second water outlet 13, that is, limit the hanging height of the first water retaining section 231 and the guide section 233, so that a gap water flow area can be formed between the first water retaining section 231 and the guide section 233 relative to the second water outlet 13, and the water flow area always remains in an open state. As long as there is water accumulation in the water inlet chamber 14, the water flow will be discharged to the second water outlet 13 through the water flow area in real time for a trace water pressure main flushing. Therefore, as long as the floating member 2 is in a normal state, the floating member 2 will not be affected by any buoyancy and will not shake or move up.

[0054] When using,

[0055] (1) See Figure 5 , control the water supply component 4 to inlet water from the water inlet 11, that is, press the water pump once, and the water flow will be divided into two after entering, one is toward the first water outlet 12 at the upper end for continuous brushing and flushing; the other is toward the second water outlet 13 at the lower end. The inflowing water flow will also be divided into two, one of which continuously impacts and pushes against the top of the blocking pressure-bearing surface 21. In this process, the floating member 2 will not move up due to the impact of the water flow, and the first water outlet 12 at the upper end will be kept open for continuous brushing and flushing (no limit structure is required to limit the displacement of the float), see Figure 4, the other enters the water flow area B between the floating member 2 and the wall of the water inlet chamber 14, and then accumulates in the pressure relief space C through the drainage port 221A. When the accumulated water level is higher than the height of the water blocking ring 131, the water flow enters the water flow area A between the extension part 23 and the second water outlet part 13 and is discharged from the second water outlet part 13. It should be noted that the water flow area A between the extension part 23 and the second water outlet part 13 is very small, so the main flushing pipe will only produce a little water flow, and the discharged water flow can also increase the water flow of the brush circle water flow, thereby improving the flushing intensity of the brush circle water flow;

[0056] (2) When the brush ring is flushed, turn off the water pump; see Figure 6 The upper end of the floating member 2 loses the water pressure of the water flow from the water inlet 11, and the floating pressure surface 22 at the lower end of the floating member 2 begins to float to a certain height (as shown in the figure) due to the buoyancy of the water accumulated in the water inlet chamber 14. Figure 6 Float to a certain height or Figure 7 Completely float up and completely close the first water outlet 12); at this time, turn on the water pump again, see Figure 7 , the water flow of the water inlet 11 will directly impact and penetrate the quick-sealing groove 24 of the floating part 2, quickly filling the quick-sealing groove 24, and the quick-sealing groove 24 will quickly move upward under the action of water pressure to completely close the first water outlet 12 at the upper end, and the first water retaining section 231 of the floating part 2 will also directly break away from the second water outlet 13 to fully open it, and all the water will be directly discharged to the second water outlet 13 for main flushing. The whole process is very fast, and the main flushing water can quickly combine with the rotating water of the brush ring water channel that has not been completely discharged from the toilet pot surface to form a stronger water flow for flushing;

[0057] It should be noted that the floating member 2 will normally float up rapidly and instantly under the action of buoyancy to completely close the first water outlet 12. However, if the water pump is just turned off and then turned on, the floating member 2 will inevitably float up. Figure 6 As shown, the first water outlet 12 is not completely closed even though it is only floating at a certain height. After the quick-sealing groove 24 of the floating member 2 is impacted by the water flow and filled, the floating member 2 will always close the first water outlet 12 under the impact pressure of the water flow, and will not automatically fall down under its own action. Therefore, as long as the water pump is not turned off, the second water outlet 13 will continue to be open.

[0058] (3) When the main flushing is completed, turn off the water pump; Figure 5 As shown, the quick-sealing groove 24 of the floating member 2 loses the water flow pressure, and the floating member 2 moves downward under its own gravity. At this time, since a certain amount of water still accumulates in the water inlet chamber 14, the floating member 2 can only move downward to a certain height, and cannot descend to the lowest position to contact the bottom wall of the water inlet chamber 14;

[0059] Therefore, when the water pump is turned on again, the side water flow entering from the water inlet 11 generates water pressure acting on the sealing pressure-bearing surface 21, and the linked floating part 2 drops rapidly to return to normal and fully opens the first water outlet 12. At this time, the final water replenishment function can be performed through the brush circle water flow. Since the switching speed is fast enough, the first water outlet 12 opens quickly, and the replenishment water flow of the first water outlet 12 is quickly combined with the main flushing water that has not been drained from the toilet pot surface. In this way, if there is noise at the end of the main flushing, it will be buffered by the replenishment water flow to prevent noise.

[0060] (4) Finally, turn off the water pump; the accumulated water in the water inlet chamber 14 is discharged from the second water outlet 13 through the water flow area A between the extension portion 23 and the second water outlet 13 until the floating member 2 returns to normal after the water is discharged.

[0061] In the above whole use process, by controlling the start and stop of the water pump to change the water flow, the functions can be quickly switched. Therefore, the present invention breaks the disadvantages of the existing waterway switching valve, which has a complex structure and requires the use of a limit structure with a float to switch the main flushing and brush ring flushing functions. It directly abandons the design of the limit structure and only requires a simple combination of a shell 1 structure and a floating part 2. By controlling the water pressure change to link the floating part 2, the function switching can be achieved.

[0062] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A waterway switching valve suitable for an intelligent toilet, characterized in that: include The housing comprises a water inlet, a first water outlet, a second water outlet and a water inlet cavity, wherein the first and second water outlets are respectively arranged and connected to the upper and lower ends of the water inlet cavity; the water inlet is connected to the side of the water inlet cavity and is arranged between the two water outlets; A floating member, which is movably installed in the water inlet cavity and switches to open the first water outlet or the second water outlet under the action of water flow; the floating member includes a blocking pressure-bearing surface, a floating pressure-bearing surface and an extension portion; when the blocking pressure-bearing surface or the floating pressure-bearing surface is acted upon by water flow, the floating member moves downward in the water inlet cavity to open the first water outlet or moves upward to open the second water outlet; the extension portion is formed by extending the floating pressure-bearing surface toward the second water outlet; The extension part is inserted into or separated from the second water outlet part as the floating part moves in the water inlet cavity, and in the inserted state, the water flow area between the extension part and the second water outlet part is smaller than the water flow area between the floating part and the water inlet cavity wall.

2. A waterway switching valve suitable for an intelligent toilet as claimed in claim 1, characterized in that: When the extension portion is inserted into the second water outlet portion, the water flow entering the water inlet portion acts on the blocking pressure-bearing surface and drives the floating member to move toward the second water outlet portion, so that the floating pressure-bearing surface is limited and pressed against the lower bottom wall of the water inlet cavity.

3. A waterway switching valve suitable for an intelligent toilet as claimed in claim 2, characterized in that: The floating pressure-bearing surface extends toward the second water outlet to form a limited stop cover, and the floating pressure-bearing surface is limited by the limited stop cover to be pressed against the lower bottom wall of the shell and cover the second water outlet; at least one drainage port is opened on the cover wall of the limited stop cover, and the drainage port is used to connect the interior of the limited stop cover with the water inlet chamber.

4. A waterway switching valve suitable for an intelligent toilet as claimed in claim 3, characterized in that: The second water outlet portion extends toward the floating member to form a water-blocking ring body, and the water-blocking ring body is correspondingly matched with the inner wall of the limit stop cover to form a pressure relief space.

5. A waterway switching valve suitable for an intelligent toilet as claimed in claim 4, characterized in that: The extension portion includes a first water retaining section and a second water retaining section, the first water retaining section is used to be inserted into or disconnected from the second water outlet portion, the second water retaining section is located above the first water retaining section and the water blocking ring body, a guide section is formed between the second water retaining section and the first water retaining section, and the guide section forms a water-passing gap relative to the guide wall on the outer periphery of the top of the water blocking ring body.

6. A waterway switching valve suitable for an intelligent toilet as claimed in claim 5, characterized in that: The guide bar section and the guide bar wall are respectively arranged in an inclined or arc shape.

7. A waterway switching valve suitable for an intelligent toilet according to any one of claims 1 to 6, characterized in that: The floating member is also provided with a quick-sealing groove, which is located between the sealing pressure-bearing surface and the floating pressure-bearing surface. The axis of the quick-sealing groove is parallel to the axis of the water inlet portion. The quick-sealing groove is used to drive the floating member to move quickly toward the first water outlet portion when the floating member is separated from the second water outlet portion and is impacted by the water flow entering the water inlet portion.

8. A waterway switching valve suitable for an intelligent toilet as claimed in claim 7, characterized in that: The quick-sealing groove is arranged to penetrate the floating member, and its water flow area is larger than the water flow area of ​​the water inlet portion.

9. The waterway switching valve for an intelligent toilet as claimed in claim 1, characterized in that: It also includes a guiding mechanism, which includes a sliding bar arranged on the outer wall of the floating member, and a sliding groove arranged on the inner wall of the shell, and the sliding bar and the sliding groove are respectively extended in the direction of the first water outlet and the second water outlet; when the floating member moves in the shell, the sliding bar slides in the sliding groove to enable the floating member to move toward the first water outlet or the second water outlet.

10. The waterway switching valve for an intelligent toilet as claimed in claim 1, characterized in that: The sealing pressure-bearing surface is concavely arranged to form at least two empty grooves, and the empty grooves are arranged toward the first water outlet.

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