Combination valve for toilet and toilet flushing device

Abstract

The utility model provides a combined valve for toilets and a toilet flushing device, comprising: a body, having a first water inlet channel, a first water outlet channel, a second water inlet channel, a second water outlet channel and a third water outlet channel, wherein the first water inlet channel is connected to an external water source, the second water inlet channel is connected to an outlet of a water pump arranged in a water tank, the first water outlet channel is connected to an inner cavity of the water tank, and the second and third water outlet channels are respectively used to be connected to a flushing water path of the toilet; a water inlet component, movably arranged on the body to control the first water inlet channel to be connected to or disconnected from the first water outlet channel; a switching component, movably arranged on the body to control the second water inlet channel to be switched to be connected to the second water outlet channel or the third water outlet channel; a float component, arranged on the body, having a float that moves up and down with the water level of the water tank, and the float is respectively linked to the water inlet component and the linkage switching component when it moves. The combined valve for toilets of the utility model has a simple and compact structure, a small volume, and is easy and convenient to install.

Description

Technical Field

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

[0002] In the prior art, a toilet flushing device that uses a water pump to extract water from a toilet tank for flushing generally needs to be equipped with a water inlet valve and a switching valve. The water inlet valve is used to fill the water tank with water, and the switching valve is used to switch and control the water flow from the water outlet of the water pump to flow to different flushing water paths of the toilet. In the prior art, the water inlet valve and the switching valve are both independently arranged, which is troublesome to install on the one hand, and occupies a large internal space of the water tank on the other hand, resulting in a large volume of the water tank, which is not conducive to the miniaturization design of the toilet. Utility Model Content

[0003] In order to solve the above technical problems, one of the purposes of the utility model is to provide a combined valve for toilets, which has a simple and compact structure, a small volume, and is easy and convenient to install. The second purpose of the utility model is to provide a toilet flushing device having the combined valve for toilets.

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

[0005] A combined valve for a toilet, arranged in a water tank of the toilet, comprising:

[0006] The main body has a first water inlet channel, a first water outlet channel, a second water inlet channel, a second water outlet channel and a third water outlet channel, wherein the first water inlet channel is connected to an external water source, the second water inlet channel is connected to an outlet of a water pump for extracting water from the water tank, the first water outlet channel is connected to an inner cavity of the water tank, and the second water outlet channel and the third water outlet channel are respectively used to be connected to a flushing water path of the toilet;

[0007] A water inlet assembly, comprising a first back-pressure valve assembly, wherein the first back-pressure valve assembly is movably disposed on the body to control the first water inlet channel to be connected to or disconnected from the first water outlet channel;

[0008] a switching assembly, comprising a second back-pressure valve group and a third back-pressure valve group movably disposed on the body, and controlling the second water inlet channel to switchably communicate with the second water outlet channel or the third water outlet channel through the second back-pressure valve group and the third back-pressure valve group;

[0009] The float assembly is arranged on the main body and has a float that moves up and down with the water level of the water tank. When the float moves up and down with the water level of the water tank, it links the water inlet assembly to perform on-off control and links the switching assembly to perform switching control.

[0010] In some preferred embodiments, the second back-pressure valve group is arranged between the second water inlet channel and the second water outlet channel to control the connection and disconnection between the second water inlet channel and the second water outlet channel, and the third back-pressure valve group is arranged between the second water inlet channel and the third water outlet channel to control the connection and disconnection between the second water inlet channel and the third water outlet channel. When the second back-pressure valve group is in the connecting position connecting the second water inlet channel and the second water outlet channel, the third back-pressure valve group is in the cutting-off position cutting off the second water inlet channel and the third water outlet channel; when the second back-pressure valve group is in the cutting-off position cutting off the second water inlet channel and the second water outlet channel, the third back-pressure valve group is in the connecting position connecting the second water inlet channel and the third water outlet channel.

[0011] In some preferred embodiments, 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 third back-pressure valve group has a third pressure relief hole and a third lifting rod for controlling the opening and closing of the third pressure relief hole, and the float controls the opening and closing of the first back-pressure valve group, the second back-pressure valve group and the third back-pressure valve group accordingly by linking the first lifting rod, the second lifting rod and the third lifting rod.

[0012] In some preferred embodiments, the second lifting rod also serves as the third lifting rod, that is, the second lifting rod controls the opening and closing of the second pressure relief hole and the third pressure relief hole respectively, and the second lifting rod closes the third pressure relief hole when opening the second pressure relief hole, and vice versa, the second lifting rod opens the third pressure relief hole when closing the second pressure relief hole.

[0013] In some preferred embodiments, the first lifting rod and the second lifting rod are integrally formed; or, the first lifting rod and the second lifting rod are independently formed, and the float drives the first lifting rod and the second lifting rod through one of the first lifting rod and the second lifting rod; or, the first lifting rod and the second lifting rod are independently formed, and the float drives the first lifting rod and the second lifting rod respectively.

[0014] In some preferred embodiments, the float assembly also includes a float cup fixed on the main body, the float is installed in the float cup, the top of the float cup forms an opening, the bottom is provided with a drain hole, the drain hole is provided with a buoyant one-way valve, the one-way valve closes the drain hole when it floats up, and opens the drain hole when it falls down.

[0015] In some preferred embodiments, the buoy assembly further comprises a small counterweight buoy, a longitudinally arranged adjusting rod is connected to the one-way valve, and the small counterweight buoy is height-adjustably connected to the adjusting rod.

[0016] In some preferred embodiments, the main body includes a first water inlet pipe having the first water inlet channel, a second water inlet pipe having the second water inlet channel, and a first water outlet pipe having the first water outlet channel, the first water outlet pipe is arranged outside the first water inlet pipe, the first water outlet pipe and the second water inlet pipe are longitudinally arranged side by side, and a connecting portion is provided between the outer wall of the first water outlet pipe and the outer wall of the second water inlet pipe.

[0017] In some preferred embodiments, a water replenishment channel is further provided in the body, and the water replenishment channel connects the first water outlet channel with the second water outlet channel, or the water replenishment channel connects the first water outlet channel with the third water outlet channel.

[0018] In some preferred embodiments, the second water outlet channel is used to communicate with the inner wall flushing water channel of the toilet, the third water outlet channel is used to communicate with the bottom flushing water channel of the toilet, and the main body includes a first water inlet pipe having the first water inlet channel, and the water inlet end of the first water inlet pipe is provided with a mounting portion for fixedly mounting in a mounting hole on the wall of the water tank.

[0019] In addition, the utility model also provides a toilet flushing device, including a toilet, wherein the toilet is provided with a water tank and a flushing water circuit, the flushing water circuit of the toilet includes an inner wall flushing water circuit of the toilet and a bottom flushing water circuit of the toilet, the water tank is provided with a combination valve for toilets described in any one of the above items, the second water outlet channel is connected to the inner wall flushing water circuit of the toilet, and the third water outlet channel is connected to the bottom flushing water circuit of the toilet.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] The utility model integrates the water inlet assembly, the switching assembly and the float assembly on the main body of the toilet combination valve, and the float of the float assembly moves up and down with the water level of the water tank to respectively link the water inlet assembly for on-off control and the switching assembly for switching control. Compared with the prior art that independently sets a set of water inlet valves for the toilet water tank and a set of switching valves for the water flow of the toilet water tank, it is not only troublesome to install the water inlet valve and the switching valve separately, but also the independently set water inlet valve and switching valve occupy a large volume in the water tank. The utility model integrates the water inlet valve and the switching valve of the prior art into a combination valve, which has a more compact structure and a small volume. Moreover, on the basis of the integrated combination valve, the utility model further uses a float assembly to control the water inlet assembly and the switching assembly at the same time, without the need to independently set two float assemblies, further greatly reducing the volume occupied by the combination valve; in addition, the combination valve of the utility model can be installed in place at one time, and the installation is simpler, more convenient and faster.

[0022] The utility model has a water inlet assembly including a first back-pressure valve group, a switching assembly including a second back-pressure valve group and a third back-pressure valve group, and the combination valve is controlled by the three back-pressure valve groups, which has an ingenious design, a simple structure and reliable functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] in:

[0025] Figure 1 This is one of the three-dimensional assembly diagrams of a combined valve for a toilet according to an embodiment of the utility model;

[0026] Figure 2 This is the second three-dimensional assembly diagram of the combined valve for a toilet according to one embodiment of the utility model;

[0027] Figure 3 It is a three-dimensional exploded view of a combined valve for a toilet according to an embodiment of the utility model;

[0028] Figure 4 It is a cross-sectional view of a combined toilet valve according to an embodiment of the utility model when the float is in a falling position and the water inlet assembly is in a connecting position (the arrow in the figure indicates the path of water flowing from the first water inlet channel to the first water outlet channel);

[0029] Figure 5 The utility model is a toilet combination valve in one embodiment. Figure 4 A sectional view of another section in the state (the arrows in the figure indicate the path where part of the water flow of the first water outlet channel flows to the first water outlet channel, and the other part flows to the third water outlet channel through the water replenishment channel);

[0030] Figure 6 The utility model is a toilet combination valve in one embodiment. Figure 4 A cross-sectional view of another cross section in the state (the arrow in the figure indicates the path of the water flow from the water replenishment channel to the third water outlet channel);

[0031] Figure 7 It is a cross-sectional view of a combined toilet valve according to an embodiment of the utility model when the float is in a floating position and the water inlet assembly is in a 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);

[0032] Figure 8 It is a three-dimensional cross-sectional view of a combined toilet valve according to an embodiment of the utility model when the float is in a floating position and the water inlet assembly is in a cut-off position;

[0033] Fig. 9 The utility model is a toilet combination valve in one embodiment. Figure 8 One of the cross-sectional views of turning on the water pump in the state of (at this time, the water inlet assembly is in the cut-off position, the second back-pressure valve group is in the connecting position, and the third back-pressure valve group is in the cut-off position) (the arrow in the figure indicates the path of water flowing from the second water inlet channel to the second water outlet channel);

[0034] Fig.10 yes Fig. 9 Another cross-sectional view of the state, in which the arrows indicate the path of the water in the second water inlet channel flowing out of the second water outlet channel;

[0035] Fig.11 It is a three-dimensional cross-sectional view of a combined toilet valve according to an embodiment of the utility model, when the float is in a falling position and the water pump is kept turned on;

[0036] Fig.12 yes Fig.11 One of the cross-sectional views in the state (the arrow in the figure indicates the path of water flowing from the second water inlet channel to the third water outlet channel);

[0037] Fig.13 yes Fig.11 The second cross-sectional view in the state (the arrow in the figure indicates the path of water flowing from the second water inlet channel to the third water outlet channel);

[0038] Fig.14 It is a three-dimensional exploded view of a float assembly of a combined valve for a toilet according to an embodiment of the utility model;

[0039] Fig.15 It is a three-dimensional exploded cross-sectional view of a float assembly of a combined valve for a toilet according to an embodiment of the utility model;

[0040] Fig.16 It is a schematic diagram of a toilet combination valve in a low position according to an embodiment of the utility model;

[0041] Fig.17 It is a schematic diagram of a toilet combination valve in a high position according to an embodiment of the utility model;

[0042] The accompanying drawings in the figure are marked as follows:

[0043] 1-Combination valve for toilet; 2-Water pump;

[0044] 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 replenishment channel; 17-locking ring; 18-anti-siphon port; 181-anti-siphon pad; 19-connecting part;

[0045] 20-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;

[0046] 30-switching assembly; 31-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-third back pressure valve group; 321-third back pressure chamber; 322-third water stop rubber pad; 323-third pressure relief hole; 324-third lifting rod;

[0047] 40-float assembly; 41-float; 42-float cup; 421-opening; 422-drain hole; 423-check valve; 43-counterweight small float; 431-counterweight drain hole; 44-adjusting rod. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0049] See also Figures 1 to 17 The utility model provides a combined valve 1 for a toilet in one embodiment, which is arranged in a water tank (not shown) of the toilet and comprises:

[0050] The 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 is connected to an external water source (such as a tap water pipeline), the second water inlet channel 13 is connected to the outlet of a water pump 2 for extracting water from the water tank, and the first water outlet channel 12 is connected to the inner cavity of the water tank. The second water outlet channel 14 and the third water outlet channel 15 are respectively used to be connected to the flushing water circuit (not shown) of the toilet;

[0051] The water inlet assembly includes a first back pressure valve assembly 20, wherein the first back pressure valve assembly 20 is movably disposed on the body 10 to control the first water inlet channel 11 to be connected to or disconnected from the first water outlet channel 12;

[0052] The switching assembly 30 includes a second back pressure valve group 31 and a third back pressure valve group 32 movably disposed on the body 10, and controls the second water inlet channel 13 to switchably communicate with the second water outlet channel 14 or the third water outlet channel 15 through the second back pressure valve group 31 and the third back pressure valve group 32;

[0053] The float assembly 40 is arranged on the main body 10, and has a float 41 that moves up and down with the water level of the water tank. When the float 41 moves up and down with the water level of the water tank, it links the water inlet assembly for on-off control and links the switching assembly 30 for switching control.

[0054] By integrating the water inlet assembly, the switching assembly 30 and the float assembly 40 on the main body 10 of the toilet combination valve 1, and the float 41 of the float assembly 40 moves up and down with the water level of the water tank, the water inlet assembly is linked to perform on-off control and the switching assembly 30 is linked to perform switching control. Compared with the prior art, which independently sets a set of water inlet valves for the toilet water tank and a set of switching valves for the water flow of the toilet water tank, it is not only troublesome to install the water inlet valve and the switching valve separately, but also the independently set water inlet valve and switching valve occupy a large volume in the water tank. The utility model integrates the water inlet valve and the switching valve of the prior art into a combination valve, which has a more compact structure and a small volume. Moreover, on the basis of the integrated combination valve, the utility model further uses a float assembly 40 to control the water inlet assembly and the switching assembly 30 at the same time, without the need to independently set two float assemblies 40, further greatly reducing the volume occupied by the combination valve 1; in addition, the combination valve 1 of the utility model can be installed in place at one time, and the installation is simpler, more convenient and faster. The water inlet assembly includes a first back-pressure valve group, and the switching assembly includes a second back-pressure valve group and a third back-pressure valve group. The combination valve is controlled by the three back-pressure valve groups, which has an ingenious design, a simple structure and reliable functions.

[0055] In this embodiment, specifically, the second back pressure valve group 31 is arranged between the second water inlet channel 13 and the second water outlet channel 14 to control the opening and closing between the second water inlet channel 13 and the second water outlet channel 14, and the third back pressure valve group 32 is arranged between the second water inlet channel 13 and the third water outlet channel 15 to control the opening and closing between the second water inlet channel 13 and the third water outlet channel 15. The body 10 is provided with a first valve port 111 between the first water inlet channel 11 and the first water outlet channel 12, a second valve port 131 between the second water inlet channel 13 and the second water outlet channel 14, and a third valve port 132 between the second water inlet channel 13 and the third water outlet channel 15. The water inlet assembly controls the opening and closing of the first valve port 111, the second back pressure valve group 31 controls the opening and closing of the second valve port 131, and the third back pressure valve group 32 controls the opening and closing of the third valve port 132. When the second back-pressure valve group 31 opens the second valve port 131 and is in a connecting position connecting the second water inlet channel 13 and the second water outlet channel 14, the third back-pressure valve group 32 closes the third valve port 132 and is in a cut-off position cutting off the second water inlet channel 13 and the third water outlet channel 15; when the second back-pressure valve group 31 closes the second valve port 131 and is in a cut-off position cutting off the second water inlet channel 13 and the second water outlet channel 14, the third back-pressure valve group 32 opens the third valve port 132 and is in a connecting position connecting the second water inlet channel 13 and the third water outlet channel 15.

[0056] The first back-pressure valve group 20, the second back-pressure valve group 31 and the third back-pressure valve group 32 can all adopt the existing known back-pressure valve group structure. The existing known back-pressure valve group structure usually includes a back-pressure chamber connected to the water inlet channel, a pressure relief hole connected to the back-pressure chamber, a water-stop rubber pad used to enclose the back-pressure chamber, a lifting rod used to open and close the pressure relief hole and other components. Its working principle is roughly as follows: when the float is in a floating position, the float closes the pressure relief hole through the lifting rod, and the pressure in the back-pressure chamber causes the water-stop rubber pad to move to a closed position that cuts off the water inlet channel and the water outlet channel; when the water level of the water tank drops and causes the float to be in a falling position, the float opens the pressure relief hole through the lifting rod, and the water in the back-pressure chamber flows out through the pressure relief hole to relieve pressure, and the water-stop rubber pad moves to an open position that connects the water inlet channel and the water outlet channel under the water pressure of the water inlet channel.

[0057] 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 third back pressure valve group 32 has a third back pressure chamber 321, a third water stop rubber pad 322, a third pressure relief hole 323 and a third lifting rod 324 for controlling the opening and closing of the third pressure relief hole 323. The float 41 controls the opening and closing of the first back pressure valve group 20, the second back pressure valve group 31 and the third back pressure valve group 32 by linking the first lifting rod 24, the second lifting rod 314 and the third lifting rod 324. The structures and principles of the other back pressure valve groups not described are also prior arts and will not be described in detail here.

[0058] In order to make the structure simpler, in the present embodiment, the second lifting rod 314 also serves as the third lifting rod 324, that is, the second lifting rod 314 controls the opening and closing of the second pressure relief hole 313 and the third pressure relief hole 323 respectively. The second lifting rod 314 closes the third pressure relief hole 323 when opening the second pressure relief hole 313, and vice versa, the second lifting rod 314 opens the third pressure relief hole 323 when closing the second pressure relief hole 313.

[0059] The float 41 can be selected to drive the other of the first lifting rod 24 and the second lifting rod 314 through one of the two, or the float 41 can be selected to drive the first lifting rod 24 and the second lifting rod 314 respectively. Specifically, in the present embodiment, the float 41 drives the second lifting rod 314 through the first lifting rod 24. A slide groove is provided on the first lifting rod 24, and a sliding shaft extending into the slide groove is provided on the second lifting rod 314, and the sliding shaft can rotate and slide in the slide groove. When the first lifting rod 24 moves, the second lifting rod 314 is driven by the cooperation of the sliding shaft and the slide groove. Of course, in other embodiments, the first lifting rod 24 and the second lifting rod 314 can also be designed to be integrally formed.

[0060] In this embodiment, the float assembly 40 also includes a float cup 42 fixed on the body 10, and the float 41 is installed in the float cup 42. The top of the float cup 42 forms an opening 421, and the bottom is provided with a drain hole 422. The drain hole 422 is provided with a one-way valve 423 with buoyancy. When the one-way valve 423 floats up, the drain hole 422 is closed, and when the one-way valve 423 falls down, the drain hole 422 is opened. The purpose of setting the float cup 42 is to enable the float 41 in the float cup 42 to float quickly after the water in the water tank is quickly filled into the float cup 42. The structure and principle of the float cup 42 can also adopt the existing technology.

[0061] In this embodiment, the buoy assembly 40 further includes a small counterweight buoy 43, a longitudinally arranged adjusting rod 44 is connected to the one-way valve 423, and the small counterweight buoy 43 is height-adjustably connected to the adjusting rod 44. The adjusting rod 44 is specifically a screw, and a screw hole is provided on the small counterweight buoy 43, and the small counterweight buoy 43 is threadedly connected to the adjusting rod 44 through the screw hole to adjust the height. The small counterweight float 43 is used to control the timing of the one-way valve 423 opening the drain hole 422. When the small counterweight float 43 is adjusted to a higher position, the water level in the water tank reaches the position of the small counterweight float 43 faster, so that the small counterweight float 43 will play a counterweight role on the one-way valve 423 earlier, thereby controlling the one-way valve 423 to open the drain hole 422 earlier, and the float 41 will fall earlier; conversely, when the small counterweight float 43 is adjusted to a lower position, the water level in the water tank reaches the position of the small counterweight float 43 later, so that the small counterweight float 43 will play a counterweight role on the one-way valve 423 later, thereby controlling the one-way valve 423 to open the drain hole 422 later, and the float 41 will fall later. Specifically, the small counterweight float 43 has a counterweight water storage cavity, and a counterweight drain hole 431 is provided at the bottom of the counterweight water storage cavity.

[0062] 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 longitudinally arranged side by side, and a connecting portion 19 is provided 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 combination valve is more compact.

[0063] In this embodiment, the water inlet end of the first water inlet pipe 112 is provided with a mounting portion for fixing to a mounting hole (not shown) on the wall of the water tank. A locking ring 17 is provided between the first water inlet pipe 112 and the first water outlet pipe 121. The relative position of the first water inlet pipe 112 and the first water outlet pipe 121 is locked by the locking ring 17. By adjusting the relative position of the first water inlet pipe 112 and the first water outlet pipe 121, the height of the combination valve can be adjusted. Fig.16 , at this time the combination valve is in the low position; see Fig.17 , at this time the combination valve is in the high position.

[0064] In this embodiment, a water replenishment channel 16 is further provided in the body 10, and the water replenishment channel 16 connects the first water outlet channel 12 and the third water outlet channel 15, and the water flow of the first water outlet channel 12 sequentially passes through the water replenishment channel 16 and the third water outlet channel 15 and then flows to the flushing water path of the toilet, thereby performing water seal replenishment for the toilet. Of course, in other embodiments, the water replenishment channel 16 may also connect the first water outlet channel 12 and the second water outlet channel 14, and the water flow of the first water outlet channel 12 sequentially passes through the water replenishment channel 16 and the second water outlet channel 14 and then flows to another flushing water path of the toilet, thereby performing water seal replenishment for the toilet.

[0065] 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, not limited to the inner wall flushing water path of the toilet and the bottom flushing water path of the toilet.

[0066] The working process of this embodiment is briefly described as follows:

[0067] (1) Water tank filling process (see Figures 4 to 8 ):

[0068] See also Figure 4 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 counterweight drain hole 431 of the small counterweight float 43, and the float 41 is in a falling position in the float cup 42. The fall of the float 41 drives the first lifting rod 24 and the second lifting rod 314 to be in a falling position, the first lifting rod 24 opens the first pressure relief hole 23 of the first back pressure valve group 20, the second lifting rod 314 closes the second pressure relief hole 313 of the second back pressure valve group 31 and opens the third pressure relief hole 323 of the third back pressure valve group 32. 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 water flows into the inner cavity of the water tank through the first water outlet channel 12;

[0069] See also Figure 5 and Figure 6 In the process of the first water outlet channel 12 filling the water tank cavity with water, a small part of the water flow of the first water outlet channel 12 flows to the third water outlet channel 15 through the water replenishment channel 16, and then replenishes the water seal of the toilet through the bottom flushing water channel of the toilet;

[0070] As the first water outlet channel 12 continuously inflows water into the inner cavity of the water tank, the water level in the inner cavity of the water tank continuously rises. When the water level in the inner cavity of the water tank rises to a point where the buoyancy of the one-way valve 423 is sufficient to overcome the gravity of the one-way valve 423, the small counterweight float 43 and the adjusting rod 44, the one-way 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 will enter from the top opening of the float cup 42 and quickly fill the float cup 42 until the water level in the inner cavity of the water tank rises to the top opening of the float cup 42, thereby causing the float 41 to float quickly. Figure 7 and Figure 8 As shown, after the buoy 41 floats up, it drives the first lifting rod 24 and the second lifting rod 314 to lift up, the first lifting rod 24 closes the first pressure relief hole 23 of the first back pressure valve group 20, the second lifting rod 314 opens the second pressure relief hole 313 of the second back pressure valve group 31 and closes the third pressure relief hole 323 of the third back pressure valve group 32. 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 water from entering the inner cavity of the water tank.

[0071] See also Figure 7 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, and 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 provided 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 siphon backflow phenomenon. 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, thereby preventing the water flow from the anti-siphon port 18 to flow outward.

[0072] (2) Water tank drainage process (see Figure 9-13 ):

[0073] See also Fig. 9 and Fig.10 ,exist Figure 7 and Figure 8 In the state shown, the water pump 2 is turned on, and the water pump 2 pumps water in the water tank to the second water inlet channel 13. At this time, since the float 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 closes the third pressure relief hole 323 of the third back pressure valve group 32, the second water stop rubber pad 312 opens the second valve port 131, and the third water stop rubber pad 322 closes the third valve port 132. The water flow of 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 water path of the toilet to flush the inner wall of the toilet;

[0074] See also Fig.11 , Fig.12 and Fig.13 As the water pump 2 is continuously turned on, the water in the water tank is continuously pumped out, causing the water level to drop. When the water level in the water tank drops to the position of the small counterweight float 43, the small counterweight float 43 plays a counterweight role, and its gravity acts on the one-way valve 423 through the adjusting rod 44, thereby causing the one-way valve 423 to drop and open the drain hole 422, so that the water in the float cup 42 can flow out through the drain hole 422, thereby causing the float 41 to fall. After the float 41 falls, the float 41 drives the second lifting rod 314 to be in the falling position, and the second lifting rod 314 closes the second pressure relief hole 313 of the second back pressure valve group 31 and opens the third pressure relief hole 323 of the third back pressure valve group 32, so that the second water stop rubber pad 312 closes the second valve port 131, and the third water stop rubber pad 322 opens the third valve port 132, so that the water flow of the second water inlet channel 13 is switched to the third water outlet channel 15, and then flows through the third water outlet channel 15 to the bottom flushing water path of the toilet to flush the bottom of the toilet.

[0075] Stop the water pump 2, and after the flushing is completed, the water level in the water tank is lower than the counterweight drain hole 431 and the drain hole 422. The water in the counterweight small float 43 will flow out from the counterweight drain hole 431 to prepare for the next floating of the one-way valve 423. At the same time, the water in the float cup 42 will flow out from the drain hole 422 to prepare for the next floating of the float 41. The combination valve returns to Figure 4 The water inlet status is shown.

[0076] The utility model also 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 to supply water to flush the inner wall of the toilet bowl, and the bottom flushing waterway is used to supply water to flush the bottom of the toilet. The water tank is provided with any of the above-mentioned combined valves for toilets, the second water outlet channel is connected to the inner wall flushing waterway of the toilet, and the third water outlet channel is connected to the bottom flushing waterway of the toilet.

[0077] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A combination valve for a toilet, arranged in a water tank of the toilet, characterized in that: include: The main body has a first water inlet channel, a first water outlet channel, a second water inlet channel, a second water outlet channel and a third water outlet channel, wherein the first water inlet channel is connected to an external water source, the second water inlet channel is connected to an outlet of a water pump for extracting water from the water tank, the first water outlet channel is connected to an inner cavity of the water tank, and the second water outlet channel and the third water outlet channel are respectively used to be connected to a flushing water path of the toilet; A water inlet assembly, comprising a first back-pressure valve assembly, wherein the first back-pressure valve assembly is movably disposed on the body to control the first water inlet channel to be connected to or disconnected from the first water outlet channel; a switching assembly, comprising a second back-pressure valve group and a third back-pressure valve group movably disposed on the body, and controlling the second water inlet channel to switchably communicate with the second water outlet channel or the third water outlet channel through the second back-pressure valve group and the third back-pressure valve group; The float assembly is arranged on the main body and has a float that moves up and down with the water level of the water tank. When the float moves up and down with the water level of the water tank, it links the water inlet assembly to perform on-off control and links the switching assembly to perform switching control.

2. The toilet combination valve according to claim 1, characterized in that: The second back-pressure valve group is arranged between the second water inlet channel and the second water outlet channel to control the connection and disconnection between the second water inlet channel and the second water outlet channel, and the third back-pressure valve group is arranged between the second water inlet channel and the third water outlet channel to control the connection and disconnection between the second water inlet channel and the third water outlet channel. When the second back-pressure valve group is in the connecting position connecting the second water inlet channel and the second water outlet channel, the third back-pressure valve group is in the cutting-off position cutting off the second water inlet channel and the third water outlet channel; when the second back-pressure valve group is in the cutting-off position cutting off the second water inlet channel and the second water outlet channel, the third back-pressure valve group is in the connecting position connecting the second water inlet channel and the third water outlet channel.

3. The toilet combination valve according to claim 2, characterized in that: 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 third back-pressure valve group has a third pressure relief hole and a third lifting rod for controlling the opening and closing of the third pressure relief hole, and the float controls the opening and closing of the first back-pressure valve group, the second back-pressure valve group and the third back-pressure valve group accordingly by linking the first lifting rod, the second lifting rod and the third lifting rod.

4. The toilet combination valve according to claim 3, characterized in that: The second lifting rod also serves as the third lifting rod, that is, the second lifting rod controls the opening and closing of the second pressure relief hole and the third pressure relief hole respectively. The second lifting rod closes the third pressure relief hole when opening the second pressure relief hole, and vice versa, the second lifting rod opens the third pressure relief hole when closing the second pressure relief hole.

5. The toilet combination valve according to claim 4, characterized in that: The first lifting rod and the second lifting rod are integrally formed; or, the first lifting rod and the second lifting rod are independently formed, and the float drives the first lifting rod and the second lifting rod through one of the first lifting rod and the second lifting rod; or, the first lifting rod and the second lifting rod are independently formed, and the float drives the first lifting rod and the second lifting rod respectively.

6. The toilet combination valve according to claim 1, characterized in that: The float assembly also includes a float cup fixed on the body, the float is installed in the float cup, the top of the float cup forms an opening, the bottom is provided with a drain hole, the drain hole is provided with a one-way valve with buoyancy, the one-way valve closes the drain hole when it floats up, and opens the drain hole when it falls down.

7. The toilet combination valve according to claim 6, characterized in that: The buoy assembly also includes a small counterweight buoy. The one-way valve is connected to a longitudinally arranged adjusting rod, and the small counterweight buoy is height-adjustably connected to the adjusting rod.

8. The toilet combination valve according to any one of claims 1 to 7, characterized in that: The main body includes a first water inlet pipe having the first water inlet channel, a second water inlet pipe having the second water inlet channel, and a first water outlet pipe having the first water outlet channel. The first water outlet pipe is sleeved outside the first water inlet pipe, the first water outlet pipe and the second water inlet pipe are longitudinally arranged side by side, and a connecting portion is provided between the outer wall of the first water outlet pipe and the outer wall of the second water inlet pipe.

9. The toilet combination valve according to any one of claims 1 to 7, characterized in that: A water replenishment channel is also provided in the body, and the water replenishment channel is connected to the first water outlet channel and the second water outlet channel, or the water replenishment channel is connected to the first water outlet channel and the third water outlet channel.

10. A toilet flushing device, comprising a toilet, wherein the toilet is provided with a water tank and a flushing waterway, wherein the flushing waterway of the toilet comprises an inner wall flushing waterway of the toilet and a bottom flushing waterway of the toilet, wherein: The water tank is provided with a combined valve for a toilet as claimed 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.

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