A water tank displacement control structure and toilet

Abstract

The present invention provides a control structure for the displacement of a water tank, comprising: a water tank body, having a first water storage chamber and a second water storage chamber, wherein the first water storage chamber is provided with a first drainage channel, and the second water storage chamber is provided with a second drainage channel; a drainage valve, used to control the opening and closing of the second drainage channel, wherein the drainage valve has a full-drain switch and a half-drain switch for controlling the opening of the second drainage channel; a water retaining member, under the control of the full-drain switch or the half-drain switch, moves relative to the water tank body to control the switching between the connected and closed states of the first drainage channel. The present invention adopts a single-row drainage valve to control drainage, and can also realize single-row (half-row) drainage and double-row (full-row) drainage of the water tank, with a simple structure and reliable functions.

Description

Technical Field

[0001] The invention relates to the technical field of toilets, and in particular to a water tank displacement control structure and a toilet. Background Art

[0002] Some existing toilet tanks can only use a single-displacement drain valve due to their structural relationship, such as a water tank with a negative pressure assisted flushing device. This can ensure that the remaining water level in the water tank is consistent after drainage, and then ensure that the water level difference between the water in the water tank and the negative pressure assisted flushing device is consistent, and the negative pressure assisted flushing device can have a better effect. Therefore, in this case, it is best to choose a single-displacement drain valve to control the drainage of the water tank, so that the water tank can only achieve single-displacement drainage, and cannot achieve double-displacement drainage. When too much water is used when flushing urine, water resources are wasted.

[0003] In view of this, the inventor specially designed a water tank displacement control structure and a toilet, and this case was thus created. Summary of the invention

[0004] The purpose of the present invention is to provide a water tank displacement control structure and a toilet, which adopts a single-row drain valve to control the drainage, and can also realize single-row (half-row) drainage and double-row (full-row) drainage of the water tank, with simple structure and reliable function.

[0005] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0006] A water tank displacement control structure, comprising:

[0007] The water tank body comprises a first water storage chamber and a second water storage chamber, wherein the first water storage chamber is provided with a first drainage channel, and the second water storage chamber is provided with a second drainage channel;

[0008] a drain valve, used to control the opening and closing of the second drain channel, the drain valve having a full drain switch and a half drain switch for controlling the opening of the second drain channel;

[0009] The water retaining member moves relative to the water tank body under the control of the full-drain switch or the half-drain switch to control the switching between the connected and closed states of the first drainage channel.

[0010] It is further configured as follows: the first drainage channel is a water passage connecting the first water storage chamber and the second water storage chamber, and when the water passage is connected, the water in the first water storage chamber flows to the second water storage chamber via the water passage; or, the water in the first water storage chamber and the water in the second water storage chamber (12) flow to the outside of the water tank body relatively independently via the first drainage channel and the second drainage channel respectively, and the second drainage channel is a drainage port provided at the bottom of the second water storage chamber.

[0011] It is further configured as follows: the full-row switch transmits the water stopper so that the water stopper switches from the state of controlling the water flow channel to be closed to the state of being opened, and the half-row switch does not transmit the water stopper; or, the half-row switch transmits the water stopper so that the water stopper switches from the state of controlling the water flow channel to be opened to the state of being closed, and the full-row switch does not transmit the water stopper.

[0012] The further configuration is as follows: the drain valve comprises a valve core which cooperates with the opening and closing of the drain port and a float bucket assembly which is connected to or separated from the valve core; the valve core is driven to rise by the full-row switch and the half-row switch and then is connected to the float bucket assembly; the valve core is linked to the water retaining member so that the water retaining member can switch between the two states of controlling the connection and closure of the water passage.

[0013] It is further configured as follows: it also includes a limit member, which is used to limit the position of the water stop member or release the position restriction on the water stop member; when the full-row switch is driven, the full-row switch links the limit member to release the position restriction on the water stop member, and the water stop member moves relative to the water tank body and controls the water flow channel to switch to a connected state; or, when the half-row switch is driven, the limit member releases the position restriction on the water stop member, and the water stop member moves relative to the water tank body and controls the water flow channel to switch to a closed state.

[0014] It is further configured as follows: the water retaining member includes a buoyancy member, a magnetic member or an elastic member; after the limiting member releases the position restriction on the water retaining member, the water retaining member moves relative to the water tank body and opens the water flow channel under the action of buoyancy, magnetism or elastic force; the water retaining member resets and closes the water flow channel under the action of its own gravity or the linkage of the valve core of the drain valve.

[0015] It is further configured as follows: the limit member is a driven block rotatably connected to the drain valve, and the driven block is provided with a first docking portion driven by the full-drain switch, and a second abutting portion abutting against the water retaining member.

[0016] It is further configured as follows: the follower block includes a first follower block and a second follower block which are respectively rotatably connected to the drain valve, the first follower block is driven by the full-drain switch, and the first follower block drives the second follower block so that the second follower block releases the position restriction on the water stop member; a first driving part for driving the second follower block to rotate is fixed to the circumferential side wall of the first follower block, one end of the first docking part is fixed to the circumferential side wall of the first follower block and is driven by the full-drain switch; a second docking part cooperating with the first driving part is fixed to the circumferential side wall of the second follower block, one end of the second abutting part is fixed to the circumferential side wall of the second follower block, and the other end abuts against the upper end surface of the water stop member.

[0017] It is further configured as follows: the water retaining member is slidably or swingably arranged relative to the water tank body; a partition is arranged between the first water storage chamber and the second water storage chamber to separate the first water storage chamber and the second water storage chamber, the water passage is a through hole opened on the partition to connect the first water storage chamber and the second water storage chamber, a side wall of the water retaining member abuts against a side wall of the partition, and moves up and down along the side wall of the partition.

[0018] It is further configured as follows: a negative pressure generating device is also provided in the second water storage chamber, the negative pressure generating device includes an air storage hood and a ventilation channel, an air storage space is formed on the top of the air storage hood, one end of the ventilation channel is connected to the air storage space, and the other end leads to the cavity of the toilet sewage pipe, when the second drainage channel drains water, the water in the air storage hood is discharged to form a negative pressure in the air storage space, and then the gas in the toilet sewage pipe is sucked through the ventilation channel.

[0019] It is further configured as follows: it also includes a water inlet device for filling the first water storage chamber and the second water storage chamber with water; the water inlet device is arranged in the first water storage chamber or the second water storage chamber, or the water tank body is placed in an external water tank, and the water inlet device is arranged in the external water tank and outside the water tank body.

[0020] A toilet comprises a toilet body and also comprises any one of the above-mentioned control structures for the water tank displacement.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. A water tank body, a drain valve and a water retaining member are provided, and the inner cavity of the water tank body is divided into a first water storage chamber and a second water storage chamber. The drain valve is used to control the drainage of the second water storage chamber, and the water retaining member is used to control the drainage of the first water storage chamber. The water retaining member moves relative to the water tank body under the control of the full-row switch or the half-row switch of the drain valve to control the switching of the first drainage channel between the connected and closed states, thereby realizing the use of a single-row drain valve to control drainage, and also realizing single-row drainage (only the second water storage chamber is drained) and double-row (full-row) drainage (both the first water storage chamber and the second water storage chamber are drained), with a simple structure and reliable functions.

[0023] 2. The first drainage channel is a water passage connecting the first water storage chamber and the second water storage chamber. The water in the first water storage chamber flows into the second water storage chamber through the water passage and then is discharged from the water tank body, making the structure of the water tank simpler.

[0024] 3. The full-row switch is used to drive the water retaining member, so that the water retaining member switches from the state of controlling the water flow channel to be closed to the state of being opened, and the half-row switch does not drive the water retaining member; alternatively, the half-row switch is used to drive the water retaining member, so that the water retaining member switches from the state of controlling the water flow channel to be opened to the state of being closed, and the full-row switch does not drive the water retaining member; in this design, the full-row switch or the half-row switch is used to directly drive the water retaining member, so the control is more reliable and the structure is simple.

[0025] 4. The water retaining member is linked to the valve core to switch between the two states of controlling the connection and closure of the water flow channel. In this way, the water retaining member can switch states along with the movement of the valve core. The water retaining member can maintain the water flow channel open while the valve core keeps the drain outlet of the drain valve open. There is no need to set up an additional mechanism to maintain the water retaining member opening the water flow channel for a period of time. The water retaining member is reset after the valve core is reset, thereby making the driving and resetting control of the water retaining member simpler and more reliable.

[0026] 5. By setting a limit member, the limit member is used to limit the position of the water retaining member or release the position restriction of the water retaining member; the limit member is linked with the full-row switch or the half-row switch to release the position restriction of the water retaining member, so that the water retaining member controls the water flow channel to switch to a connected state or a closed state. In this way, it can be designed that the full-row switch or the half-row switch does not directly link the water retaining member, so that the driving force value of the full-row switch or the half-row switch can be smaller, and the design concept is more ingenious.

[0027] 6. The water retaining member includes a buoyancy member, a magnetic member or an elastic member, so that after the limiting member releases the position restriction on the water retaining member, the water retaining member can move relative to the water tank body and open the water flow channel under the action of buoyancy, magnetism or elastic force. The structure for controlling the movement of the water retaining member relative to the water tank body is simple and the function is reliable.

[0028] 7. By setting up a negative pressure generating device, when the drain valve is opened to drain, the water level in the air storage hood drops, and the air storage space above the air storage hood forms a negative pressure, which then absorbs the air in the toilet sewage pipe through the ventilation channel, which can promote the formation of a siphon in the toilet sewage pipe as soon as possible, making the toilet flush cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] in:

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is the internal structure diagram of the water tank body in the present invention;

[0033] Figure 3 It is an exploded view of the overall structure of the present invention;

[0034] Figure 4 It is a cross-sectional view of the overall structure of the present invention in a non-draining state;

[0035] Figure 5 is an exploded view of the drain valve of the present invention;

[0036] Figure 6 It is a connection relationship diagram of the float bucket and the float bucket bottom cover in the present invention;

[0037] Figure 7 is a connection diagram of the negative pressure generating device in the present invention;

[0038] Figure 8 yes Figure 7 Enlarged view of part A in the middle;

[0039] Fig. 9 It is a cross-sectional view of the overall structure in a semi-drainage state of the present invention;

[0040] Fig.10 It is a cross-sectional view of the overall structure of the present invention in a double-drainage (full-drainage) water state.

[0041] Description of labels:

[0042] 1. Water tank body; 11. First water storage chamber; 12. Second water storage chamber; 13. Partition plate; 131. Water passage; 14. Drain port; 2. Drain valve; 21. Body; 22. Valve core; 23. Isolation plate; 24. Float; 25. Float bottom cover; 26. Base; 27. Water stop pad component; 28. Rack; 29. ​​Switch group; 291. Full row switch; 292. Half row switch; 210. Gear; 3. Water retaining member; 31. Buoyancy chamber; 4. Limiting member; 41. First follower block; 411. First docking part; 412. First driving part; 42. Second follower block; 421. Second docking part; 422. Second abutting part; 5. Negative pressure generating device; 51. Air storage cover; 511. Air storage space; 52. Ventilation channel; 6. Water inlet device; 7. External water tank. DETAILED DESCRIPTION

[0043] 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 herein are only used to explain the present invention and are not used to limit the present invention.

[0044] Reference Figures 1 to 4, is a water tank displacement control structure disclosed in the present invention, comprising a water tank body 1, a drain valve 2, a water retaining member 3 and a stopper 4. The water tank body 1 has a first water storage chamber 11 and a second water storage chamber 12, the first water storage chamber 11 is provided with a first drainage channel, and the second water storage chamber 12 is provided with a second drainage channel; the drain valve 2 is used to control the opening and closing of the second drainage channel.

[0045] The drain valve 2 has a full drain switch 291 and a half drain switch 292 for controlling the opening of the second drain passage.

[0046] The water retaining member 3 moves relative to the water tank body 1 under the control of the full-row switch 291 or the half-row switch 292 to control the switching between the connected and closed states of the first drainage channel. When the water retaining member 3 controls the connection of the first drainage channel under the control of the full-row switch 291 or the half-row switch 292, the water in the first water storage chamber 11 and the second water storage chamber 12 are both discharged, thereby realizing the full drainage function of the water tank; when the water retaining member 3 controls the closing of the first drainage channel under the control of the full-row switch 291 or the half-row switch 292, the water in the first water storage chamber 11 is not discharged, and only the water in the second water storage chamber 12 is discharged, thereby realizing the half drainage function of the water tank. In this way, the use of a single-row drainage valve to control drainage can also realize single-row drainage and double-row drainage of the water tank, with a simple structure and reliable function.

[0047] Specifically, in this embodiment, the first drainage channel is a water passage 131 connecting the first water storage chamber 11 and the second water storage chamber 12, and the first drainage channel is a drainage port 14 provided at the bottom of the second water storage chamber 12. When the water passage 131 is connected, the water in the first water storage chamber 11 flows to the second water storage chamber 12 through the water passage 131, and then is discharged from the water tank body 1 through the second drainage channel (drainage port 14), so that the design structure is simpler. In other embodiments, it is also possible that the water in the first water storage chamber 11 and the water in the second water storage chamber 12 flow to the outside of the water tank body 1 relatively independently through the first drainage channel and the second drainage channel, that is, when draining water, the water in the first water storage chamber 11 does not first flow to the second water storage chamber 12 and then be discharged from the outside of the water tank body 1, but is directly discharged from the outside of the water tank body 1.

[0048] Specifically, in the present embodiment, a partition 13 is provided between the first water storage chamber 11 and the second water storage chamber 12 to separate the first water storage chamber 11 and the second water storage chamber 12; the water passage 131 is a through hole opened on the partition 13 to connect the first water storage chamber 11 and the second water storage chamber 12, and the through hole is provided at the bottom of the partition 13.

[0049] Combination Figure 5 , Figure 6 and Figure 8The drain valve 2 is used to control the opening and closing of the drain outlet 14. The drain valve 2 includes a hollow body 21, a valve core 22 slidably connected to the body 21 along the length direction of the body 21, an isolation plate 23 fixed in the body 21, a float 24 arranged in the body 21 and located below the isolation plate 23, a float bottom cover 25 sealed and fixed to the lower end of the float 24, a base 26 fixed to the drain outlet 14 of the water tank body 1, a water stop pad component 27 fixed to the bottom end of the valve core 22 and sealed and separated with the drain outlet 14, a rack 28 driving the valve core 22 to slide along the length direction of the body 21, a gear 210 meshing with the rack 28, and a switch group 29 driving the gear 210 to rotate. The switch group 29 includes a full-row switch 291 and a half-row switch 292 driving the gear 210 to rotate. The full-row switch 291 and the half-row switch 292 specifically adopt a key structure. The bottom of the float bottom cover 25 is beveled to facilitate filling more glue when gluing and fixing with the bottom opening of the float 24 to make the bonding stronger.

[0050] The full-row switch 291 and the half-row switch 292 drive the gear 210 to rotate, thereby driving the rack 28 to move, and the rack 28 then drives the valve core 22 to move, and the valve core 22 then drives the water-stopping pad component 27 to move upward and open the drain port 14 for drainage. After the valve core 22 moves upward, it is hooked by the floating bucket 24 in a floating state until the water level of the second water storage chamber 12 drops to a predetermined position, the floating bucket 24 falls due to insufficient buoyancy, and the valve core 22 falls accordingly, and drives the water-stopping pad component 27 to re-close the drain port 14. The bottom cover 25 of the floating bucket is glue-sealed and fixed on the bottom opening of the floating bucket 24 to prevent the floating bucket 24 from being immersed in water for a long time, and water enters the buoyancy chamber 31 in the floating bucket 24, causing the buoyancy of the floating bucket 24 to become smaller or even disappear, thereby causing the drainage of the drainage valve to be unstable or even functional failure.

[0051] In this embodiment, the limiter 4 is used to limit the position of the water retaining member 3 or release the position restriction of the water retaining member 3. When the full-drain switch 291 is driven, the full-drain switch 291 links the limiter 4 to release the position restriction of the water retaining member 3, and the water retaining member 3 moves relative to the water tank body 1 and controls the water passage 131 to switch to a connected state.

[0052] Specifically, the present embodiment preferably adopts a water retaining member 3 that is slidably arranged relative to the water tank body 1, and one side wall of the water retaining member 3 abuts against a side wall of the partition 13, and slides up and down along the side wall of the partition 13 to control the switching of the water passage 131 between the connected and closed states; the water retaining member 3 includes a buoyancy member, a magnetic member or an elastic member, and after the limit member 4 releases the position restriction on the water retaining member 3, the water retaining member 3 slides relative to the water tank body 1 under the action of buoyancy, magnetism or elastic force and opens the water passage 131, and the water retaining member 3 resets and closes the water passage 131 under the action of its own gravity or the linkage of the valve core 22 of the drain valve 2.

[0053] In this embodiment, the water retaining member 3 preferably includes a buoyancy member, and a buoyancy chamber 31 is provided in the buoyancy member. When the position limiter 4 releases the position restriction on the water retaining member 3, the water retaining member 3 floats up under the buoyancy of the buoyancy chamber 31, thereby making it easier and more convenient to operate the full drain switch 291 of the drain valve. In other embodiments, the water retaining member 3 can also be selected to be swung relative to the water tank body 1.

[0054] Specifically, the limiting member 4 is a follower block rotatably connected to the drain valve 2, and the follower block is provided with a first docking portion 411 driven by the full-drain switch 291 and a second abutting portion 422 abutting against the water stopper 3. More specifically, the follower block includes a first follower block 41 and a second follower block 42 rotatably connected to the drain valve 2, respectively, and the first follower block 41 is driven by the full-drain switch 291, and the first follower block 41 drives the second follower block 42 so that the second follower block 42 releases the position restriction on the water stopper 3.

[0055] A first docking portion 411 driven by the full-row switch 291 and a first driving portion 412 for driving the second driven block 42 to rotate are fixed to the peripheral side wall of the first driven block 41 .

[0056] A second docking portion 421 matched with the first driving portion 412 and a second abutting portion 422 abutting against the upper end surface of the water blocking member 3 are fixed to the peripheral side wall of the second driven block 42 .

[0057] Combination Figure 7 The second water storage chamber 12 is provided with a negative pressure generating device 5, which includes an air storage cover 51 and a ventilation channel 52. The top of the air storage cover 51 forms an air storage space 511. One end of the ventilation channel 52 is connected to the air storage space 511, and the other end leads to the cavity of the toilet sewage pipe. The toilet sewage pipe is provided with two water traps (not shown). The side wall of the toilet sewage pipe between the two water traps is provided with a toilet suction hole, and the ventilation channel 52 is connected to the cavity of the toilet sewage pipe through the toilet suction hole. When the second drainage channel (drain port 14) drains water, the water in the air storage cover 51 is discharged to form a negative pressure in the air storage space 511, and then the gas in the toilet sewage pipe is sucked through the ventilation channel 52, so that the toilet sewage pipe can be effectively siphoned as soon as possible, so that the toilet flushing is cleaner.

[0058] A water inlet device 6 is also provided in the water tank body 1. The water inlet device 6 is used to fill the first water storage chamber 11 and the second water storage chamber 12 with water. The water inlet device 6 can be a mechanical float valve or a solenoid valve. In this embodiment, the water tank body 1 is placed in an external water tank 7. The water inlet device 6 is provided in the external water tank 7 and outside the water tank body 1. The first water storage chamber 11 and the second water storage chamber 12 are filled with water through a connecting channel. In other embodiments, the water inlet device 6 can also be selectively provided in the first water storage chamber 11 or the second water storage chamber 12, but is not limited thereto.

[0059] The above-mentioned water tank displacement control structure can be used on a toilet, so that the toilet has all the functions of the above-mentioned water tank displacement control structure.

[0060] The operation steps of this embodiment are as follows:

[0061] Reference Fig. 9 , when you need to urinate:

[0062] Pressing the half-drain switch 292 downwards drives the drain valve 2 to start and drain the second water storage chamber 12. At this time, the negative pressure generating device 5 in the second water storage chamber 12 forms a negative pressure on the upper part of the air storage cover 51 due to the water level drop, and absorbs the air in the toilet sewage pipe through the ventilation channel 52, thereby prompting the toilet sewage pipe to form a siphon as soon as possible, making the toilet flushing cleaner. Since the half-drain switch 292 does not link the limiter 4, the limiter 4 keeps the position restriction on the water retaining member 3, so that the water retaining member 3 keeps the water passage 131 closed, so that the water in the first water storage chamber 11 is not discharged, thereby realizing single-drain drainage.

[0063] Reference Fig.10 , when bowel flushing is required:

[0064] Press the full-drain switch 291 downward to start the drain valve 2. At the same time, the full-drain switch 291 drives the first follower block 41 and the second follower block 42 of the limit member 4 to move, thereby releasing the position restriction on the water retaining member 3. The water retaining member 3 moves upward along the side wall of the partition 13 due to the buoyancy, and the water passage 131 between the first water storage chamber 11 and the second water storage chamber 12 is connected, so that the first water storage chamber 11 and the second water storage chamber 12 are drained at the same time, increasing the flushing water volume and flushing intensity. During the flushing process, the negative pressure generating device 5 in the second water storage chamber 12 forms a vacuum on the upper part of the air storage hood 51 due to the drop in water level, and absorbs the air in the toilet sewage pipe through the ventilation channel 52, thereby prompting the toilet sewage pipe to form a siphon as soon as possible, making the toilet flush cleaner.

[0065] In other embodiments not shown in the figure, the full-row switch 291 may not be linked to the limiter 4, but the half-row switch 292 may be used to link the limiter 4. Specifically, when the full-row switch 291 is driven, the water passage 131 remains connected, and when the half-row switch 292 is driven, the half-row switch 292 is linked to the limiter 4 to release the position restriction on the water retaining member 3, and the water retaining member 3 moves relative to the water tank body 1 and controls the water passage 131 to switch to the closed state. This is also feasible.

[0066] In other embodiments not shown in the figure, it is also possible to choose not to set the limiter 4, and directly use the full row switch 291 to drive the water retaining member 3 or the half row switch 292 to drive the water retaining member 3. Specifically, the full row switch 291 drives the water retaining member 3, so that the water retaining member 3 switches from the state of controlling the water passage 131 to the open state, and the half row switch 292 does not drive the water retaining member 3; or, the half row switch 292 drives the water retaining member 3, so that the water retaining member 3 switches from the state of controlling the water passage 131 to the closed state, and the full row switch 291 does not drive the water retaining member 3. Preferably, the drain valve includes a valve core 22 that cooperates with the opening and closing of the drain port 14 and a floating bucket assembly that is connected or separated from the valve core 22. The valve core 22 is driven to rise by the full row switch 291 and the half row switch 292 and is connected to the floating bucket assembly. The valve core 22 is linked to the water retaining member 3 to switch the water retaining member 3 between the two states of controlling the water passage 131 to be connected and closed. Specifically, when the full-drain switch 291 is used to transmit the water retaining member 3, the full-drain switch 291 is pressed, and the full-drain switch 291 drives the valve core 22 to move upward, and the valve core 22 then drives the water-stop pad component 27 to open the drain port 14 for drainage, and at the same time, the valve core 22 drives the water retaining member 3 to control the water passage 131 to open, so as to achieve full-drain drainage; when the half-drain switch 292 is used to transmit the water retaining member 3, the half-drain switch 292 is pressed, and the half-drain switch 292 drives the valve core 22 to move upward, and the valve core 22 then drives the water-stop pad component 27 to open the drain port 14 for drainage, and at the same time, the valve core 22 drives the water retaining member 3 to control the water passage 131 to close, so as to achieve half-drain drainage.

[0067] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention 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 present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A water tank displacement control structure, characterized in that: include: The water tank body (1) comprises a first water storage chamber (11) and a second water storage chamber (12), wherein the first water storage chamber (11) is provided with a first drainage channel, and the second water storage chamber (12) is provided with a second drainage channel; A drainage valve (2) for controlling the opening and closing of the second drainage channel, the drainage valve (2) having a full drainage switch (291) and a half drainage switch (292) for controlling the opening of the second drainage channel; A water retaining member (3), the water retaining member (3) comprising a buoyancy member, a magnetic member or an elastic member, moves relative to the water tank body (1) under the control of the full-row switch (291) or the half-row switch (292), and is used to control the switching between the two states of connection and closing of the first drainage channel.

2. A water tank displacement control structure according to claim 1, characterized in that: The first drainage channel is a water passage (131) connecting the first water storage chamber (11) and the second water storage chamber (12); when the water passage (131) is connected, the water in the first water storage chamber (11) flows to the second water storage chamber (12) via the water passage (131); or, the water in the first water storage chamber (11) and the water in the second water storage chamber (12) flow to the outside of the water tank body relatively independently via the first drainage channel and the second drainage channel respectively, and the second drainage channel is a drainage port (14) provided at the bottom of the second water storage chamber (12).

3. A water tank displacement control structure according to claim 2, characterized in that: The full-row switch (291) drives the water retaining member (3), so that the water retaining member (3) switches from a closed state of controlling the water passage (131) to an open state, and the half-row switch (292) does not drive the water retaining member (3); or, The half-row switch (292) drives the water retaining member (3), so that the water retaining member (3) switches from a state of controlling the water passage (131) to an open state to a closed state, and the full-row switch (291) does not drive the water retaining member (3).

4. A water tank displacement control structure according to claim 3, characterized in that: The drain valve comprises a valve core (22) which cooperates with the drain port (14) for opening and closing, and a float assembly which is connected to or separated from the valve core (22). The valve core (22) is driven to rise by the full-row switch (291) and the half-row switch (292) and is then connected to the float assembly. The valve core (22) is linked to the water retaining member (3) so that the water retaining member (3) switches between the two states of controlling the water passage (131) to be connected and closed.

5. A water tank displacement control structure according to claim 2, characterized in that: It also includes a limit member (4), which is used to limit the position of the water retaining member (3) or release the position restriction of the water retaining member (3); when the full-row switch (291) is driven, the full-row switch (291) links the limit member (4) to release the position restriction of the water retaining member (3), and the water retaining member (3) moves relative to the water tank body (1) and controls the water passage (131) to switch to a connected state; or, when the half-row switch (292) is driven, the limit member (4) releases the position restriction of the water retaining member (3), and the water retaining member (3) moves relative to the water tank body (1) and controls the water passage (131) to switch to a closed state.

6. A water tank displacement control structure according to claim 5, characterized in that: After the position limiter (4) releases the position limit on the water retaining member (3), the water retaining member (3) moves relative to the water tank body (1) under the action of buoyancy, magnetic force or elastic force and opens the water passage (131), and the water retaining member (3) resets and closes the water passage (131) under the action of its own gravity or the linkage of the valve core (22) of the drain valve (2).

7. A water tank displacement control structure according to claim 5, characterized in that: The limit member (4) is a driven block rotatably connected to the drain valve (2), and the driven block is provided with a first docking portion (411) driven by the full-drain switch (291), and a second abutting portion (422) abutting against the water retaining member (3).

8. A water tank displacement control structure according to claim 7, characterized in that: The driven block comprises a first driven block (41) and a second driven block (42) which are respectively rotatably connected to the drain valve (2), the first driven block (41) being driven by the full-drain switch (291), and the first driven block (41) driving the second driven block (42) so that the second driven block (42) releases the position restriction on the water retaining member (3); a first driving portion (412) for driving the second driven block (42) to rotate is fixed to the peripheral side wall of the first driven block (41), one end of the first docking portion (411) is fixed to the peripheral side wall of the first driven block (41) and is driven by the full-drain switch (291); a second docking portion (421) cooperating with the first driving portion (412) is fixed to the peripheral side wall of the second driven block (42), one end of the second abutting portion (422) is fixed to the peripheral side wall of the second driven block (42), and the other end abuts against the upper end surface of the water retaining member (3).

9. A water tank displacement control structure according to claim 2, characterized in that: The water retaining member (3) is arranged to slide or swing relative to the water tank body (1); a partition (13) is arranged between the first water storage chamber (11) and the second water storage chamber (12) to separate the first water storage chamber (11) and the second water storage chamber (12); the water passage (131) is a through hole opened on the partition (13) to connect the first water storage chamber (11) and the second water storage chamber (12); a side wall of the water retaining member (3) abuts against a side wall of the partition (13) and moves up and down along the side wall of the partition (13).

10. A water tank displacement control structure according to claim 1, characterized in that: A negative pressure generating device (5) is also provided in the second water storage chamber (12), and the negative pressure generating device (5) comprises an air storage cover (51) and a ventilation channel (52). The top of the air storage cover (51) forms an air storage space (511), one end of the ventilation channel (52) is connected to the air storage space (511), and the other end leads to the cavity of the toilet sewage pipe. When the second drainage channel drains water, the water in the air storage cover (51) is discharged, so that the air storage space (511) forms a negative pressure, and then the gas in the toilet sewage pipe is sucked through the ventilation channel (52).

11. A water tank displacement control structure according to claim 1, characterized in that: It also includes a water inlet device (6) for filling the first water storage chamber (11) and the second water storage chamber (12) with water; the water inlet device (6) is arranged in the first water storage chamber (11) or the second water storage chamber (12); or, the water tank body (1) is placed in an external water tank (7), and the water inlet device (6) is arranged in the external water tank (7) and outside the water tank body (1).

12. A toilet, comprising a toilet body, characterized in that: It also includes a water tank displacement control structure as described in any one of claims 1-11.

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