Adjustable closestool switching valve and closestool flushing device

Abstract

The utility model provides an adjustable closestool switching valve and a closestool flushing device.The closestool switching valve comprises a body, the body is provided with a second water inlet channel, a second water outlet channel and a third water outlet channel, and the second water inlet channel is communicated with an outlet of a water pump used for pumping water in a water tank; the switching assembly is movably arranged on the body to control the second water inlet channel to be communicated with the second water outlet channel or the third water outlet channel in a switching manner; the floating cylinder assembly comprises a floating cylinder cup and a floating cylinder which can be installed in the floating cylinder cup in an up-down floating mode, the floating cylinder moves up and down in linkage with the switching assembly to conduct switching control, the floating cylinder cup is fixedly arranged on the body, an opening is formed in the top end of the floating cylinder cup, and a water drainage hole is formed in the bottom of the floating cylinder cup. The one-way valve controls closing and opening of the drainage hole through upward floating and downward falling, and the adjusting piece is used for adjusting the size of the drainage hole. The switching opportunity of the switching valve of the closestool is convenient to adjust, the adjusting range is wide, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of toilets, in particular to an adjustable toilet switching valve and a toilet flushing device with the toilet switching valve. Background Art

[0002] In the prior art, for a toilet flushing device that uses a water pump to extract water from a toilet tank, a toilet switching valve is provided to make the water extracted by the water pump flow to the inner wall flushing water path and the bottom flushing water path of the toilet alternately. However, some existing toilet switching valves use an electronically controlled switching valve for switching, and the timing of water path switching (i.e., the timing of the switching action of the electronically controlled switching valve) needs to be set in advance in the control program of the main control board that controls the electronically controlled switching valve. As a result, it is not very convenient to adjust and match the switching timing according to different toilet models, and it is necessary to adjust by rewriting the control program, which is rather troublesome and has poor versatility, restricting the promotion of products; while some other existing toilet switching valves use a mechanical switching valve controlled by a float for switching. Although the timing of water path switching (i.e., the timing of the switching action of the mechanical switching valve) can be adjusted by adjusting the height of the float, the adjustment range only by the float height is still limited, and the versatility also needs to be improved. Summary of the Utility Model

[0003] To solve the above technical problems, one of the purposes of the utility model is to provide an adjustable toilet switching valve, which is convenient to adjust the switching timing, has a wide adjustment range, and has a simple structure. Another purpose of the utility model is to provide a toilet flushing device with the toilet switching valve.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An adjustable toilet switching valve is arranged in the toilet tank and includes:

[0006] A body having a second water inlet channel, a second water outlet channel, and a third water outlet channel, and the second water inlet channel is communicated with the outlet of a water pump for extracting water from the tank;

[0007] A switching assembly is movably arranged on the body to control the second water inlet channel to be alternately communicated with the second water outlet channel or the third water outlet channel;

[0008] The buoy assembly includes a buoy cup and a buoy that is installed in the buoy cup so as to be able to float up and down. When the buoy moves up and down, it drives the switching assembly to perform switching control. The buoy cup is fixedly arranged on the body. The top end of the buoy cup forms an opening, and a water discharge hole is provided at the bottom. The buoy assembly further includes a one-way valve and an adjusting member arranged on the buoy cup. When the one-way valve floats up with the water level in the water tank, it closes the water discharge hole, and when the one-way valve drops, it opens the water discharge hole. The adjusting member is used to adjust the size of the water discharge hole.

[0009] In some preferred embodiments, the water discharge hole is arranged on the bottom wall of the buoy cup. The adjusting member is arranged on the bottom wall of the buoy cup in a sliding or rotating manner. An installation cavity extends downward from the bottom wall of the buoy cup. The one-way valve is arranged in the installation cavity in a vertically sliding manner and is located below the adjusting member.

[0010] In some preferred embodiments, the inner wall of the installation cavity is provided with longitudinally extending guiding grooves or guiding ribs. Corresponding guiding ribs or guiding grooves are provided on the outer wall of the one-way valve. The one-way valve slides up and down in the installation cavity through the cooperation of the guiding grooves and guiding ribs.

[0011] In some preferred embodiments, the water discharge hole is arranged on the bottom wall of the buoy cup. The adjusting member is arranged on the bottom wall of the buoy cup in a sliding or rotating manner. A plurality of spaced-apart gear grooves are provided on the bottom wall of the buoy cup. The adjusting member is provided with gear ribs that cooperate with the gear grooves. When the gear ribs cooperate with different gear grooves, the adjusting member controls the size of the water discharge hole to be different.

[0012] In some preferred embodiments, the water discharge hole is arranged on the bottom wall of the buoy cup. The bottom wall of the buoy cup is provided with a shaft hole. The adjusting member is an adjusting piece. A rotating shaft that cooperates with the shaft hole extends upward from the upper surface of the adjusting piece. The adjusting piece rotates around the rotating shaft. A driving convex portion protrudes downward from the lower surface of the adjusting piece. The driving convex portion is provided with a cross groove.

[0013] In some preferred embodiments, the switching component includes a first switching component and a second switching component. The first switching component is disposed between the second water inlet channel and the second water outlet channel to control the on-off between the second water inlet channel and the second water outlet channel. The second switching component is disposed between the second water inlet channel and the third water outlet channel to control the on-off between the second water inlet channel and the third water outlet channel. When the first switching component is in the connected position connecting the second water inlet channel and the second water outlet channel, the second switching component is in the cut-off position cutting off the second water inlet channel and the third water outlet channel; when the first switching component is in the cut-off position cutting off the second water inlet channel and the second water outlet channel, the second switching component is in the connected position connecting the second water inlet channel and the third water outlet channel.

[0014] In some preferred embodiments, the body is further provided with a first water inlet channel and a first water outlet channel. The first water inlet channel is communicated with an external water source, and the first water outlet channel is communicated with the inner cavity of the water tank. The toilet switching valve is further provided with a water inlet component. The water inlet component is movably disposed on the body to control the connection or disconnection between the first water inlet channel and the first water outlet channel. When the float moves up and down, it drives the water inlet component to perform on-off control.

[0015] In some preferred embodiments, the water inlet component adopts a first back pressure valve group, and the first switching component adopts a second back pressure valve group. The first back pressure valve group has a first pressure relief hole and a first lifting rod for controlling the opening and closing of the first pressure relief hole. The second back pressure valve group has a second pressure relief hole and a second lifting rod for controlling the opening and closing of the second pressure relief hole. The float respectively drives the first lifting rod and the second lifting rod to correspondingly control the on-off of the first back pressure valve group and the second back pressure valve group.

[0016] In some preferred embodiments, the second switching component includes a piston and a return spring. When the second back pressure valve group is in the cut-off position, the piston moves to the connected position connecting the second water inlet channel and the third water outlet channel under the water pressure of the second water inlet channel; when the second back pressure valve group is in the connected position, the piston moves to the cut-off position cutting off the second water inlet channel and the third water outlet channel under the elastic force of the return spring.

[0017] In addition, the present invention further provides a toilet flushing device, including a toilet. The toilet is provided with a water tank and a flushing water path. The flushing water path of the toilet includes an inner wall flushing water path of the toilet and a bottom flushing water path of the toilet. The water tank is provided with the toilet switching valve according to any one of the above. The second water outlet channel is communicated with the inner wall flushing water path of the toilet, and the third water outlet channel is communicated with the bottom flushing water path of the toilet.

[0018] Compared with the prior art, the utility model has at least the following beneficial effects:

[0019] The utility model adjusts the size of the water discharge hole of the floating cup through the adjustment member. In this way, when the water discharge hole is adjusted to be larger, the water in the floating cup can flow out of the water discharge hole faster, so that the floating cylinder can fall faster, and further the switching action of the switching component is advanced; when the water discharge hole is adjusted to be smaller, the water in the floating cup can flow out of the water discharge hole slower, so that the floating cylinder can fall slower, and further the switching action of the switching component is postponed. By adding the adjustment member, the utility model can facilitate the adjustment of the switching timing, has a wide adjustment range, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the utility model, and constitute a part of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute an improper limitation of the utility model.

[0021] Wherein:

[0022] Figure 1 is a schematic perspective assembly view of a toilet switching valve according to an embodiment of the utility model;

[0023] Figure 2 is an exploded perspective view of a toilet switching valve according to an embodiment of the utility model;

[0024] Figure 3 is a cross-sectional view of a toilet switching valve according to an embodiment of the utility model when the floating cylinder is in the falling position and the water inlet assembly is in the communicating position (the arrow in the figure indicates the path of the water flow from the first water inlet channel to the first water outlet channel);

[0025] Figure 4 is a toilet switching valve according to an embodiment of the utility model in Figure 3 a cross-sectional view of another section in the state (the arrow in the figure indicates the path of the water flow in the first water outlet channel flowing through the water replenishing channel to the third water outlet channel);

[0026] Figure 5 is a cross-sectional view of a toilet switching valve according to an embodiment of the utility model when the floating cylinder is in the floating position and the water inlet assembly is in the cut-off position (the arrow in the figure indicates the path of the outside air entering the first water outlet channel through the anti-siphon port);

[0027] Figure 6 is a toilet switching valve according to an embodiment of the utility model in Figure 5One of the cross-sectional views of the water pump when it is turned on in the [state] (at this time, the water inlet assembly is in the cut-off position, the first switching assembly is in the connected position, and the second switching assembly is in the cut-off position) (the arrow in the figure indicates the path of the water flow from the second water inlet channel to the second water outlet channel);

[0028] Figure 7 is Figure 6 Another cross-sectional view in the [state], and the arrow in the figure shows the path of the water flow in the second water inlet channel flowing out from the second water outlet channel;

[0029] Figure 8 One of the cross-sectional views of the toilet switching valve according to an embodiment of the present invention when the float is in the falling position and the water pump is kept turned on (the arrow in the figure indicates the path of the water flow from the second water inlet channel to the third water outlet channel);

[0030] Figure 9 is Figure 8 The second cross-sectional view in the [state] (the arrow in the figure indicates the path of the water flow from the second water inlet channel to the third water outlet channel);

[0031] Figure 10 It is a three-dimensional assembled cross-sectional view of the float assembly of the toilet switching valve according to an embodiment of the present invention;

[0032] Figure 11 It is an exploded three-dimensional view of the float assembly of the toilet switching valve according to an embodiment of the present invention;

[0033] Figure 12 It is a three-dimensional schematic diagram of the float cup of the toilet switching valve according to an embodiment of the present invention;

[0034] Figure 13 One of the three-dimensional schematic diagrams of the adjusting member of the toilet switching valve according to an embodiment of the present invention;

[0035] Figure 14 Another three-dimensional schematic diagram of the adjusting member of the toilet switching valve according to an embodiment of the present invention;

[0036] Figure 15 It is a schematic diagram of the adjusting member of the toilet switching valve according to an embodiment of the present invention in the 1st gear (the drain hole is the largest);

[0037] Figure 16 It is a schematic diagram of the adjusting member of the toilet switching valve according to an embodiment of the present invention in the 4th gear (the drain hole is the smallest);

[0038] Figure 17 One of the three-dimensional cross-sectional views of the working process of the float assembly of the toilet switching valve according to an embodiment of the present invention (at this time, the drain hole is adjusted to the largest, the check valve is in the floating position and closes the drain hole, and the dotted line represents the water in the toilet tank);

[0039] Figure 18 This is the second perspective cross-sectional view of the working process of the float assembly of the toilet switching valve according to an embodiment of the present utility model (at this time, the drain hole is adjusted to the maximum, the one-way valve is in the falling position and opens the drain hole, the dotted line represents the water in the toilet tank, and the arrow represents the discharge path of the water in the float cup 42).

[0040] The reference numerals in the figure are as follows:

[0041] 1 - Toilet switching valve; 2 - Water pump;

[0042] 10 - Body; 11 - First water inlet channel; 111 - First valve port; 112 - First water inlet pipe; 12 - First water outlet channel; 121 - First water outlet pipe; 13 - Second water inlet channel; 131 - Second valve port; 132 - Third valve port; 133 - Second water inlet pipe; 14 - Second water outlet channel; 15 - Third water outlet channel; 16 - Water replenishing channel; 17 - Lock ring; 18 - Anti - siphon port; 181 - Anti - siphon gasket; 19 - Connecting part;

[0043] 20 - Water inlet assembly (first back - pressure valve group); 21 - First back - pressure chamber, 22 - First water - stop rubber pad; 23 - First pressure - relief hole; 24 - First lifting rod;

[0044] 30 - Switching assembly; 31 - First switching assembly (second back - pressure valve group); 311 - Second back - pressure chamber, 312 - Second water - stop rubber pad; 313 - Second pressure - relief hole; 314 - Second lifting rod; 32 - Second switching assembly; 321 - Piston; 322 - Return spring;

[0045] 40 - Float assembly; 41 - Float; 42 - Float cup; 421 - Opening; 422 - Drain hole; 423 - One - way valve; 4231 - Guide rib; 424 - Adjusting part; 4241 - Gear rib; 4242 - Rotating shaft; 4243 - Driving convex part; 425 - Installation cavity; 4251 - Guide groove; 426 - Gear slot; 427 - Shaft hole. Detailed implementation mode

[0046] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0047] Please refer to Figures 1 to 16 , the present utility model provides an adjustable toilet switching valve 1 in a preferred embodiment, which is arranged in the water tank (not shown) of the toilet and includes:

[0048] The main body 10 has a first water inlet channel 11, a first water outlet channel 12, a second water inlet channel 13, a second water outlet channel 14, and a third water outlet channel 15. The first water inlet channel 11 communicates with an external water source (such as a tap water pipeline), the second water inlet channel 13 communicates with the outlet of a water pump 2 for pumping water from a water tank, and the first water outlet channel 12 communicates with the inner cavity of the water tank. The second water outlet channel 14 and the third water outlet channel 15 are respectively used to communicate with the flushing water circuit of the toilet (not shown);

[0049] The water inlet assembly 20 is movably arranged on the main body 10 to control the communication or disconnection between the first water inlet channel 11 and the first water outlet channel 12;

[0050] The switching assembly 30 is movably arranged on the main body 10 to control the second water inlet channel 13 to be selectively communicated with the second water outlet channel 14 or the third water outlet channel 15;

[0051] The float assembly 40 includes a float cup 42 and a float 41 that is vertically movably installed in the float cup 42. The float cup 42 is fixedly arranged on the main body 10. When the float 41 moves up and down, it respectively drives the water inlet assembly 20 for on-off control and drives the switching assembly 30 for switching control. An opening 421 is formed at the top end of the float cup 42, and a water discharge hole 422 is provided at the bottom. The float assembly 40 further includes a one-way valve 423 and an adjusting member 424 arranged on the float cup 42. When the one-way valve 423 floats with the water level in the water tank, it closes the water discharge hole 422, and when the one-way valve 423 drops, it opens the water discharge hole 422. The adjusting member 424 is used to adjust the size of the water discharge hole 422.

[0052] By setting the adjusting member 424 to adjust the size of the water discharge hole 422 of the float cup 42, in this way, when the water discharge hole 422 is adjusted to be larger, the water in the float cup 42 can flow out of the water discharge hole 422 faster, so that the float 41 can drop faster, and further the switching action of the switching assembly is advanced; and when the water discharge hole 422 is adjusted to be smaller, the water in the float cup 42 can flow out of the water discharge hole 422 slower, so that the float 41 can drop slower, and further the switching action of the switching assembly is postponed. By adding the adjusting member 424, the adjustment of the switching timing is convenient. And compared with the prior art that can only adjust the switching timing by the float height, the present utility model can further adjust the switching timing through the adjusting member 424, the adjustment range is wider, and the structure is simple.

[0053] In this embodiment, the water discharge hole 422 is provided on the bottom wall of the floating cup 42, the adjusting member 424 is rotatably provided on the bottom wall of the floating cup 42, an installation cavity 425 extends downward from the bottom wall of the floating cup 42, and the one-way valve 423 is slidably provided in the installation cavity 425 and is located below the adjusting member 424. Such a design facilitates the assembly of the adjusting member 424 and the one-way valve 423. Of course, the adjusting member 424 can also be replaced by a sliding manner provided on the bottom wall of the floating cup 42.

[0054] Specifically, the inner wall of the installation cavity 425 is provided with a longitudinally extending guiding groove 4251, and correspondingly, a guiding rib 4231 is provided on the outer wall of the one-way valve 423. The one-way valve 423 slides up and down in the installation cavity 425 through the cooperation of the guiding groove 4251 and the guiding rib 4231. Alternatively, it can also be that the inner wall of the installation cavity 425 is provided with longitudinally extending guiding ribs, and correspondingly, guiding grooves are provided on the outer wall of the one-way valve 423.

[0055] In order to avoid the problem of the adjusting member 424 running out of position after adjustment, in this embodiment, a plurality of spaced-apart gear slots 426 are provided on the bottom wall of the floating cup 42, and gear ribs 4241 cooperating with the gear slots 426 are provided on the adjusting member 424. When the gear ribs 4241 cooperate with different gear slots 426, the adjusting member 424 controls the size of the water discharge hole 422 differently. Specifically, refer to Figure 12 , where there are 4 gear slots 426, which are respectively marked with Arabic numerals 1, 2, 3, and 4, and a triangular indicating icon is provided on the adjusting member 424. Refer to Figure 15 , at this time, the triangular indicating icon on the adjusting member 424 points to the 1st gear slot, and at this time the water discharge hole 422 is the largest (that is, the cross-sectional area of the water discharge hole 422 for fluid passage is the largest); refer to Figure 16 , at this time, the triangular indicating icon on the adjusting member 424 points to the 4th gear slot, and at this time the water discharge hole 422 is the smallest (that is, the cross-sectional area of the water discharge hole 422 for fluid passage is the smallest).

[0056] In this embodiment, in order to facilitate the assembly of the adjusting member 424, a shaft hole 427 is provided on the bottom wall of the floating cup 42. The adjusting member 424 is an adjusting piece, and a rotating shaft 4242 cooperating with the shaft hole 427 extends upward from the upper surface of the adjusting piece. The adjusting piece 424 rotates around the rotating shaft 4242, and an elastic buckle is provided at the top of the rotating shaft 4242. The elastic buckle is buckled with the top end of the shaft hole 427 for axial limit. A driving convex portion 4243 protrudes downward from the lower surface of the adjusting piece. The driving convex portion 4243 is provided with a cross-shaped groove. The provision of the cross-shaped groove can facilitate the driving of the adjusting member 424 with tools such as a screwdriver, making the adjustment more convenient.

[0057] In this embodiment, specifically, the switching component 30 includes a first switching component 31 and a second switching component 32. The first switching component 31 is disposed between the second water inlet channel 13 and the second water outlet channel 14 to control the on-off between the second water inlet channel 13 and the second water outlet channel 14. The second switching component 32 is disposed between the second water inlet channel 13 and the third water outlet channel 15 to control the on-off between the second water inlet channel 13 and the third water outlet channel 15. A first valve port 111 is provided in the body 10 between the first water inlet channel 11 and the first water outlet channel 12, a second valve port 131 is provided between the second water inlet channel 13 and the second water outlet channel 14, and a third valve port 132 is provided between the second water inlet channel 13 and the third water outlet channel 15. The water inlet component 20 controls the opening and closing of the first valve port 111, the first switching component 31 controls the opening and closing of the second valve port 131, and the second switching component 32 controls the opening and closing of the third valve port 132. When the first switching component 31 opens the second valve port 131 and is in the connected position connecting the second water inlet channel 13 and the second water outlet channel 14, the second switching component 32 closes the third valve port 132 and is in the cut-off position cutting off the second water inlet channel 13 and the third water outlet channel 15. When the first switching component 31 closes the second valve port 131 and is in the cut-off position cutting off the second water inlet channel 13 and the second water outlet channel 14, the second switching component 32 opens the third valve port 132 and is in the connected position connecting the second water inlet channel 13 and the third water outlet channel 15.

[0058] Specifically, in this embodiment, the water inlet component 20 adopts a first backpressure valve group 20, and the first switching component 31 adopts a second backpressure valve group 31. Both the first backpressure valve group 20 and the second backpressure valve group 31 adopt the known backpressure valve group structure. The known backpressure valve group structure generally includes a backpressure chamber communicated with the water inlet channel, a pressure relief hole communicated with the backpressure chamber, a water stop rubber pad for surrounding the backpressure chamber, a lifting rod for opening and closing the pressure relief hole and other components. Its working principle is roughly as follows: When the float 41 is in the floating position, the float 41 closes the pressure relief hole through the lifting rod, and the pressure in the backpressure chamber makes the water stop rubber pad move to the closed position cutting off the water inlet channel and the water outlet channel. When the water level in the water tank drops and the float 41 is in the falling position, the float 41 opens the pressure relief hole through the lifting rod, and the water in the backpressure chamber flows out through the pressure relief hole for pressure relief. The water stop rubber pad moves to the open position connecting the water inlet channel and the water outlet channel under the action of the water pressure in the water inlet channel.

[0059] Specifically, the first back-pressure valve group 20 has a first back-pressure chamber 21, a first water-stop rubber pad 22, a first pressure-relief hole 23, and a first lifting rod 24 for controlling the opening and closing of the first pressure-relief hole 23; the second back-pressure valve group 31 has a second back-pressure chamber 311, a second water-stop rubber pad 312, a second pressure-relief hole 313, and a second lifting rod 314 for controlling the opening and closing of the second pressure-relief hole 313. The floating cylinder 41 controls the on-off of the first back-pressure valve group 20 and the second back-pressure valve group 31 respectively by linking the first lifting rod 24 and the second lifting rod 314. The structures and principles of the remaining unmentioned back-pressure valve groups will not be elaborated in detail here.

[0060] In this embodiment, the first lifting rod 24 and the second lifting rod 314 are integrally formed, which has a simple structure and is convenient for forming and installation.

[0061] In this embodiment, the second switching component 32 includes a piston 321 and a return spring 322. When the second back-pressure valve group 31 is in the cut-off position (i.e., closing the second valve port 131), the water flow pressure in the second water inlet channel 13 can act entirely on the piston 321, and the piston 321 moves to the connecting position connecting the second water inlet channel 13 and the third water outlet channel 15 (i.e., opening the third valve port 132) under the water pressure of the second water inlet channel 13; when the second back-pressure valve group 31 is in the connected position (i.e., opening the second valve port 131), the water flow in the second water inlet channel 13 is diverted and is not sufficient to overcome the elastic force of the return spring 322, and the piston 321 moves to the cut-off position cutting off the second water inlet channel 13 and the third water outlet channel 15 (i.e., closing the third valve port 132) under the elastic force of the return spring 322. Specifically, the return spring 322 here is a compression spring.

[0062] In this embodiment, the switching component 30 adopts a back-pressure type first switching component 31 and a piston type second switching component 32 to jointly achieve the switching control of the water flow by the switching component 30. It can be understood that in other embodiments, other common switching valve structures can also be adopted, not limited to this, as long as it can switch the water flow in the second water inlet channel 13 to flow to the second water outlet channel 14 or the third water outlet channel 15.

[0063] In this embodiment, the body 10 includes a first water inlet pipe 112 having a first water inlet channel 11, a second water inlet pipe 133 having a second water inlet channel 13, and a first water outlet pipe 121 having a first water outlet channel 12. The first water outlet pipe 121 is sleeved outside the first water inlet pipe 112. The first water outlet pipe 121 and the second water inlet pipe 133 are arranged longitudinally side by side, and there is a connecting portion 19 between the outer wall of the first water outlet pipe 121 and the outer wall of the second water inlet pipe 133. With such a layout, the structure of the toilet switching valve is more compact.

[0064] In this embodiment, the water inlet end of the first water inlet pipe 112 is provided with an installation part for fixedly installing on the tank wall of the water tank (not shown in the figure). A lock ring 17 is arranged between the first water inlet pipe 112 and the first water outlet pipe 121. The relative positions of the first water inlet pipe 112 and the first water outlet pipe 121 are locked by the lock ring 17, and the height of the toilet switching valve is adjusted by adjusting the relative positions of the first water inlet pipe 112 and the first water outlet pipe 121.

[0065] In this embodiment, a water replenishing channel 16 is further arranged in the main body 10. The water replenishing channel 16 communicates with the first water outlet channel 12 and the third water outlet channel 15. The water flow in the first water outlet channel 12 flows through the water replenishing channel 16 and the third water outlet channel 15 in sequence and then flows to the flushing water path of the toilet, so as to replenish the water seal of the toilet. Of course, in other embodiments, the water replenishing channel 16 can also communicate with the first water outlet channel 12 and the second water outlet channel 14. The water flow in the first water outlet channel 12 flows through the water replenishing channel 16 and the second water outlet channel 14 in sequence and then flows to another flushing water path of the toilet, so as to replenish the water seal of the toilet.

[0066] Specifically, in this embodiment, the second water outlet channel 14 is used to communicate with the inner wall flushing water path of the toilet, and the third water outlet channel 15 is used to communicate with the bottom flushing water path of the toilet. Of course, the second water outlet channel 14 and the third water outlet channel 15 can also be used to communicate with other flushing water paths of the toilet, and are not limited to the inner wall flushing water path and the bottom flushing water path of the toilet.

[0067] By integrally arranging the water inlet assembly 20, the switching assembly 30 and the float assembly 40 on the main body 10 of the toilet switching valve 1, the structure is more compact and the volume is small. And on the basis of the integrated one-piece valve, further by adopting one float assembly 40 to simultaneously control the water inlet assembly 20 and the switching assembly 30, there is no need to independently arrange two float assemblies 40, which further greatly reduces the occupied volume of the toilet switching valve 1; in addition, the toilet switching valve 1 of the present utility model can be installed in place at one time, and the installation is simpler, more convenient and faster.

[0068] The working process of this embodiment is briefly described as follows:

[0069] (1) Water inlet process of the water tank (see Figure 3 and Figure 4 ):

[0070] See Figure 3, at this time, there is no water in the water tank or the water level is lower than the drain hole 422 of the float cup 42, and the float 41 is in the falling position in the float cup 42. The falling of the float 41 drives the first lifting rod 24 and the second lifting rod 314 to be in the falling position. The first lifting rod 24 opens the first pressure relief hole 23 of the first back pressure valve group 20, and the second lifting rod 314 closes the second pressure relief hole 313 of the second back pressure valve group 31. After the first pressure relief hole 23 is opened, the first water stop rubber pad 22 opens the first valve port 111, so that the first water inlet channel 11 is connected to the first water outlet channel 12, and the water flows through the first water outlet channel 12 to fill the inner cavity of the water tank;

[0071] See Figure 4 , during the process of the first water outlet channel 12 filling the inner cavity of the water tank, a small part of the water flow in the first water outlet channel 12 flows to the third water outlet channel 15 through the water replenishing channel 16, and then replenishes the water seal of the toilet through the bottom flushing waterway of the toilet;

[0072] As the first water outlet channel 12 continuously fills the inner cavity of the water tank, the water level in the inner cavity of the water tank continuously rises. When the buoyancy of the check valve 423 in the inner cavity of the water tank is sufficient to overcome the gravity of the check valve 423, the check valve 423 floats up and closes the drain hole 422. In this way, the water in the water tank will not enter the float cup 42 from the drain hole 422, but until the water level in the inner cavity of the water tank rises to the top opening of the float cup 42, it enters from the top opening of the float cup 42 and quickly fills the float cup 42, so that the float 41 quickly floats up (see Figure 17 ). After the float 41 floats up, it drives the first lifting rod 24 and the second lifting rod 314 to lift. The first lifting rod 24 closes the first pressure relief hole 23 of the first back pressure valve group 20, and the second lifting rod 314 opens the second pressure relief hole 313 of the second back pressure valve group 31. After the first pressure relief hole 23 is closed, the first water stop rubber pad 22 closes the first valve port 111, so that the first water inlet channel 11 is cut off from the first water outlet channel 12, thereby stopping the filling of the inner cavity of the water tank.

[0073] See further Figure 5 , after the first water stop rubber pad 22 closes the first valve port 111, there is no water pressure in the first water outlet channel 12. The anti-siphon pad 181 provided on the first water outlet channel 12 falls under its own gravity and opens the anti-siphon port 18 opened on the first water outlet channel 12, so that the outside air can enter the first water outlet channel 12 through the anti-siphon port 18, thereby avoiding the phenomenon of siphon backflow. When there is water flow in the first water outlet channel 12, the water flow pressure drives the anti-siphon pad 181 to move upward and close the anti-siphon port 18, so as to avoid the water flow from flowing out through the anti-siphon port 18.

[0074] (2) Water tank drainage process (see Figures 6 - 9 ):

[0075] SeeFigure 6 and Figure 7 , in the state shown in Figure 3 and Figure 4 When the water pump 2 is turned on, the water pump 2 pumps the water in the water tank to the second water inlet channel 13. At this time, since the floating cylinder 41 is in a floating state, the second lifting rod 314 opens the second pressure relief hole 313 of the second back pressure valve group 31, and the second water stop rubber pad 312 opens the second valve port 131. The water flow in the second water inlet channel 13 flows through the second valve port 131 to the second water outlet channel 14, and then flows to the toilet through the inner wall flushing waterway of the toilet to flush the inner wall of the toilet; at the same time, since the water flow in the second water inlet channel 13 flows to the second water outlet channel 14, therefore, the water flow pressure in the second water inlet channel 13 cannot overcome the elastic force of the return spring 322, so the piston 321 cannot be driven to open the third valve port 132, and the piston 321 remains closed to the third valve port 132;

[0076] See Figure 8 and Figure 9 , with the continuous opening of the water pump 2, the water in the water tank is continuously pumped out, causing the water level to drop, and then causing the one-way valve 423 to drop and open the drain hole 422. The water in the floating cylinder cup 42 can flow out through the drain hole 422 (see Figure 18 ), and then causing the floating cylinder 41 to drop (by adjusting the adjusting member 424 on the floating cylinder cup 42 to adjust the size of the drain hole 422, the speed at which the water in the floating cylinder cup 42 is discharged through the drain hole 422 can be adjusted, and then the speed at which the floating cylinder 41 drops can be adjusted). After the floating cylinder 41 drops, the floating cylinder 41 drives the second lifting rod 314 to be in the falling position. The second lifting rod 314 closes the second pressure relief hole 313 of the second back pressure valve group 31, and then causes the second water stop rubber pad 312 to close the second valve port 131. At this time, the water pressure in the second water inlet channel 13 acts entirely on the piston 321, and enables the piston 321 to overcome the elastic force of the return spring 322 to open the third valve port 132. In this way, the water flow in the second water inlet channel 13 is switched to flow to the third water outlet channel 15, and then flows to the bottom flushing waterway of the toilet through the third water outlet channel 15 to flush the bottom of the toilet.

[0077] Stop the water pump 2. After the flushing is completed, at this time, the water level in the water tank is lower than the drain hole 422, and the water in the floating cylinder cup 42 will flow out from the drain hole 422 to prepare for the next floating of the floating cylinder 41. The toilet switching valve returns to Figure 3 and Figure 4 the shown water inlet state.

[0078] In other embodiments, the first lifting rod 24 and the second lifting rod 314 may not be integrally formed, but independently formed. It is possible to select the buoy 41 to drive the other of the first lifting rod 24 and the second lifting rod 314 through one of them, or it is also possible to select the buoy 41 to drive the first lifting rod 24 and the second lifting rod 314 respectively. For example, it is possible to set a sliding groove on the first lifting rod 24 and a sliding shaft extending into the sliding groove on the second lifting rod 314, and the sliding shaft can rotate and slide in the sliding groove. When the first lifting rod 24 moves, the second lifting rod 314 is driven through the cooperation of the sliding shaft and the sliding groove.

[0079] The present utility model further provides a toilet flushing device, including a toilet (not shown), the toilet is provided with a water tank (not shown) and a flushing waterway (not shown), the flushing waterway of the toilet includes an inner wall flushing waterway of the toilet and a bottom flushing waterway of the toilet, the inner wall flushing waterway is used for supplying water to flush the inner wall of the toilet bowl, and the bottom flushing waterway is used for supplying water to flush the bottom of the toilet. The toilet switching valve described in any one of the above is provided in the water tank, the second water outlet channel is communicated with the inner wall flushing waterway of the toilet, and the third water outlet channel is communicated with the bottom flushing waterway of the toilet.

[0080] The present utility model has been described above in an exemplary manner with reference to the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. An adjustable toilet switching valve is provided in the water tank of the toilet, characterized in that, Comprising: A body having a second water inlet channel, a second water outlet channel, and a third water outlet channel, wherein the second water inlet channel is communicated with the outlet of a water pump for pumping water from the water tank; A switching component movably arranged on the body to control the second water inlet channel to be selectively communicated with the second water outlet channel or the third water outlet channel; A buoy component including a buoy cup and a buoy floatingly mounted in the buoy cup. When the buoy moves up and down, it drives the switching component to perform switching control. The buoy cup is fixedly arranged on the body. The top end of the buoy cup forms an opening, and a water discharge hole is provided at the bottom. The buoy component further includes a one-way valve and an adjusting member arranged on the buoy cup. When the one-way valve floats with the water level in the water tank, it closes the water discharge hole, and when the one-way valve drops, it opens the water discharge hole. The adjusting member is used to adjust the size of the water discharge hole.

2. The toilet switching valve according to claim 1, characterized in that, The water discharge hole is arranged on the bottom wall of the buoy cup. The adjusting member is slidably or rotatably arranged on the bottom wall of the buoy cup. An installation cavity extends downward from the bottom wall of the buoy cup. The one-way valve is slidably arranged in the installation cavity and is located below the adjusting member.

3. The toilet switching valve according to claim 2, characterized in that, Longitudinally extending guiding grooves or guiding ribs are provided on the inner wall of the installation cavity. Corresponding guiding ribs or guiding grooves are provided on the outer wall of the one-way valve. The one-way valve slides up and down in the installation cavity through the cooperation of the guiding grooves and guiding ribs.

4. The toilet switching valve according to claim 1, characterized in that, The water discharge hole is arranged on the bottom wall of the buoy cup. The adjusting member is slidably or rotatably arranged on the bottom wall of the buoy cup. A plurality of spaced-apart gear slots are provided on the bottom wall of the buoy cup. Gear ribs are provided on the adjusting member and are matched with the gear slots. When the gear ribs are matched with different gear slots, the adjusting member controls the size of the water discharge hole differently.

5. The toilet switching valve according to claim 1, characterized in that, The water discharge hole is arranged on the bottom wall of the buoy cup. A shaft hole is provided on the bottom wall of the buoy cup. The adjusting member is an adjusting piece. A rotating shaft matched with the shaft hole extends upward from the upper surface of the adjusting piece. The adjusting piece rotates around the rotating shaft. A driving convex portion protrudes downward from the lower surface of the adjusting piece, and a cross groove is provided on the driving convex portion.

6. The toilet switching valve according to claim 1, characterized in that, The switching component includes a first switching component and a second switching component. The first switching component is arranged between the second water inlet channel and the second water outlet channel to control the on-off between the second water inlet channel and the second water outlet channel. The second switching component is arranged between the second water inlet channel and the third water outlet channel to control the on-off between the second water inlet channel and the third water outlet channel. When the first switching component is in the connected position connecting the second water inlet channel and the second water outlet channel, the second switching component is in the cut-off position cutting off the second water inlet channel and the third water outlet channel; when the first switching component is in the cut-off position cutting off the second water inlet channel and the second water outlet channel, the second switching component is in the connected position connecting the second water inlet channel and the third water outlet channel.

7. The toilet switching valve according to claim 6, characterized in that, The main body is also provided with a first water inlet channel and a first water outlet channel, the first water inlet channel is connected with an external water source, the first water outlet channel is connected with the inner cavity of the water tank, the toilet switching valve is also provided with a water inlet assembly, the water inlet assembly is movably provided on the main body to control the first water inlet channel to be connected or disconnected with the first water outlet channel, and the water inlet assembly is linked to perform on-off control when the float moves up and down.

8. The toilet switching valve according to claim 7, wherein, The water inlet assembly adopts a first back-pressure valve group, and the first switching assembly adopts a second back-pressure valve group. The first back-pressure valve group has a first pressure relief hole and a first lifting rod for controlling the opening and closing of the first pressure relief hole. The second back-pressure valve group has a second pressure relief hole and a second lifting rod for controlling the opening and closing of the second pressure relief hole. The float controls the opening and closing of the first back-pressure valve group and the second back-pressure valve group respectively by linking the first lifting rod and the second lifting rod.

9. The toilet switching valve according to claim 8, wherein The second switching assembly includes a piston and a return spring. When the second back-pressure valve group is in the cut-off position, the piston moves to a connecting position connecting the second water inlet channel and the third water outlet channel under the action of the water pressure in the second water inlet channel; when the second back-pressure valve group is in the connecting position, the piston moves to a cut-off position cutting off the second water inlet channel and the third water outlet channel under the action of the elastic force of the return spring.

10. A toilet flushing device, comprising a toilet, the toilet being provided with a water tank and a flushing water path, the flushing water path of the toilet including an inner wall flushing water path of the toilet and a bottom flushing water path of the toilet, characterized in that, The water tank is provided with a toilet switching valve as described in any one of claims 1 to 9, the second water outlet channel is connected to the inner wall flushing water channel of the toilet, and the third water outlet channel is connected to the bottom flushing water channel of the toilet.

Images