Water replenishing device mechanism and drain valve

Abstract

The utility model discloses a water replenishing device mechanism and a drain valve, which comprise a water replenishing body provided with a water inlet and a water outlet. The water replenishing device further comprises an adjusting and switching assembly which is arranged on the water replenishing body. The adjusting and switching assembly comprises a water passing chamber, a water outlet chamber, at least two water passing channels, at least two adjusting valves and a switching set. The water passing chamber is formed in the water supplementing body and is respectively communicated with the water inlet and the two water passing channels; the two adjusting valves are partially arranged in the water passing chamber so as to adjust the flow area of the water passing channel; the two adjusting valves are arranged perpendicular to the water inlet direction of the water inlet, are rotatably arranged in the water passing chamber and are matched with the water passing chamber to adjust the water seal water supplementing amount when the closestool is in full drainage or half drainage; the switching group is arranged in the water outlet chamber and is used for switching and blocking the two water passing channels; the switching group is used for blocking any water passing channel through rotation, so that the other water passing channel is communicated with the water outlet; the drainage valve solves the problems that an existing drainage valve is large in size, large in installation difficulty and insufficient in adaptability.

Description

Technical Field

[0001] The utility model relates to the field of bathrooms, in particular to a water replenisher mechanism and a drain valve. Background Art

[0002] After flushing, toilets usually need to be replenished with water to make the water seal reach the required water level to prevent gas in the sewage pipe from entering the room and polluting the indoor air. In order to achieve a balance between the water replenishment of full drainage and half drainage, the existing water replenisher is provided with an adjustment structure at the end of the drain pipe, and is connected to the switch valve fixed on the main body through at least two hoses. That is, when the full drainage or half drainage is turned on, water is introduced into the drain pipe through the hose to achieve water replenishment. When the water replenishment amount is different, the flow cross-sectional area of ​​the two hoses in the adjustment structure is changed to achieve the same adjustment of the full drainage or half drainage water replenishment amount. However, this water replenishment method has certain structural deficiencies, as follows:

[0003] Since the switch valve and the regulating mechanism are arranged in two different positions and are fixed respectively, the two hoses connecting the switching group and the switch valve are also fixed accordingly. Therefore, when the drain pipe is rotated, the rotation range is limited by the length of the hose, so that the space for placing the entire water replenisher in the water tank is limited and it is difficult to adjust; and, due to the different number of pipes connecting the water inlet and outlet ends in the existing technical solution, the water inlet and outlet cannot be changed, and can only be installed according to the set inlet and outlet directions, resulting in a limited scope of application and being unfavorable for product promotion; in addition, since the water replenisher regulating structure is fixed above the drain pipe, its structure protrudes from the water replenisher, resulting in the overall height of the water replenisher being higher and occupying a larger volume, which reduces the adaptability to multiple sizes of water tanks.

[0004] In summary, a water replenisher mechanism and a drain valve are proposed. Utility Model Content

[0005] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology, and to provide a water replenisher mechanism and a drain valve, which have a simple structure and are easy to use, and solve the problems of the existing drain valves being large in size, difficult to install, and having insufficient adaptability.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A water replenisher mechanism for adjusting the amount of water forming a toilet water seal; the water replenisher mechanism includes a water replenishing body provided with a water inlet and a water outlet; and is characterized in that it further includes an adjustment switching assembly disposed on the water replenishing body; the adjustment switching assembly includes a water flow chamber, a water outlet chamber, at least two water flow channels, at least two adjustment valves, and a switching group;

[0008] The water flow chamber is formed in the water supply body and is connected to the water inlet and the two water flow channels respectively; the two regulating valves are partially placed in the water flow chamber and are used to adjust the flow area of ​​the water flow channel;

[0009] The two regulating valves are arranged perpendicular to the water inlet direction and are rotatably mounted in the water passage chamber, and cooperate with the water passage chamber to adjust the water seal replenishment amount when the toilet is fully flushed and / or partially flushed;

[0010] The switching group is arranged in the water outlet chamber and is used to switch and block the two water passages; the switching group forms a circumferential blockage of any water passage through rotational motion to allow the other water passage to be connected to the water outlet.

[0011] Preferably, a water flow portion and a cutoff wall are formed on the peripheral wall of each regulating valve; the cutoff wall cooperates with the side wall of the water flow chamber to adjust the flow area of ​​the water flow portion; wherein, each regulating valve is arranged perpendicular to the water inlet direction of the water inlet and is rotated by external force to adjust the water flow area between the cutoff wall on the peripheral wall of the regulating valve and the side wall of the water flow chamber.

[0012] Preferably, one end of each regulating valve extends into the water passage, and the other end is exposed to the water replenishment body, and a force-applying portion is formed on the end surface exposed at one end of the water replenishment body.

[0013] Preferably, the water outlet chamber is provided with a mounting shaft and a limiting boss; the mounting shaft is formed at the center position of the water outlet chamber; the limiting boss is formed at the edge of the water outlet chamber; the switching group is sleeved on the mounting shaft, and the rotation range of the switching group is limited by the limiting boss.

[0014] Preferably, the switching group includes a rotating part and a water-sealing part; two arc-shaped blocks are provided on the peripheral wall of the rotating part; the water-sealing part is hollow, and a convex portion is provided on its inner wall, and the convex portion is used to limit the assembly with the rotating part and form synchronous rotation; the rotating part passes through the water-sealing part and is installed on the mounting shaft, and the two arc-shaped blocks on the rotating part are respectively located on both sides of the limiting boss; wherein, the arc-shaped block on the rotating part rests on one side of the limiting boss, and the corresponding water-sealing part blocks one of the water passages.

[0015] Preferably, the rotating member is further provided with an assembly hole; the assembly hole corresponds to and cooperates with the convex portion, so that when the rotating member rotates, the water sealing member is driven to rotate synchronously.

[0016] Preferably, the switching group further includes a first seal and a second seal; the first seal abuts against the rotating member; the second seal is sleeved on the side of the water sealing member close to the rotating member; the first and second seals are used to seal the switching group and the water replenishment body.

[0017] Preferably, it also includes a full row of buttons and a half row of buttons; the full row of buttons and the half row of buttons are respectively in contact with the switching group; the full row of buttons or the half row of buttons drive the switching group to rotate when moving downward to block the first water channel or the second water channel.

[0018] A drain valve comprises a lower shell and a cover plate, and is characterized in that it also includes a water replenisher mechanism; a accommodating chamber is provided on the lower shell; the accommodating chamber is used to install the water replenishing body of the water replenishing mechanism; the cover plate is snap-connected to the shell to limit the two regulating valves to be installed in the water flow chamber of the water replenishing body.

[0019] Preferably, a flow level mark is also provided on the cover plate.

[0020] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0021] The utility model provides a water replenishing device and a drain valve with a simple structure and easy use, which solves the problems of the existing drain valve being bulky, difficult to install and insufficiently adaptable. The utility model integrates the regulating valve and the switching group into one body and arranges them in the main body, which not only reduces the volume occupied by the entire water replenishing device, but also enables the entire regulating valve and the switching group to rotate together along the outer circumference of the drain valve. When installing the water inlet tank, the position can be adjusted first, which is convenient for the installation of other accessories. The small size and integration also improve the adaptability of the water replenishing device to different water tank sizes. In addition, the utility model only sets one pipeline ( That is, one pipe is connected to the water inlet and the other pipe is connected to the water outlet). Compared with the existing at least two fixed water outlet pipes, the water inlet and outlet directions of the new water replenisher mechanism can be replaced at will. In actual installation, the water inlet and outlet can be selected for installation according to different assembly scenarios (that is, the original water outlet can be connected to the water inlet, and the original water inlet end can be connected to the water outlet), which effectively improves the versatility of the water replenisher mechanism and expands its scope of application. In addition, during installation, the utility model can select hoses of different lengths for assembly according to needs, so that the drain pipe can be rotated and adjusted at will during installation, thereby effectively reducing the overall installation difficulty of the drain valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the water replenisher mechanism and the drain valve of the utility model;

[0024] Figure 2 This is an exploded view of the water replenisher mechanism and the drain valve of the utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the water replenishing body of the utility model;

[0026] Figure 4 This is an exploded view of the adjustment switch assembly of the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the water replenishment body and the regulating valve of the utility model;

[0028] Figure 6 This is a cross-sectional view of the water replenishing state of the water replenishing device structure when the full-drain button is pressed;

[0029] Figure 7 This is a cross-sectional view of the water replenishing state of the water replenisher structure when half a row of buttons are pressed.

[0030] The accompanying drawings are described as follows: 1. water replenisher mechanism; 11. water replenishing body; 111. water inlet; 112. water outlet; 12. adjustment switching assembly; 121. water flow chamber; 122. water outlet chamber; 1221. mounting shaft; 1222. limiting boss; 123. water flow channel; 1231. first water flow channel; 1232. second water flow channel; 124. regulating valve; 1241. water flow portion; 1242. Intercept wall; 1243, force-applying part; 125, switching group; 1251, rotating part; 1251a, arc block; 1251b, assembly hole; 1252, water sealing part; 1252a, convex part; 1253, first sealing part; 1254, second sealing part; 2, full-row button; 3, half-row button; 4, drain valve; 41, lower shell; 411, accommodating chamber; 42, cover plate; 421, flow gear mark. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] In the claims, description and drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for distinguishing different objects rather than for describing a specific order.

[0033] In the claims, specification and above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0034] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixed connection" are used, they should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0035] In the claims, description and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0036] See also Figure 1-6 , a water replenisher mechanism 1, which is used to adjust the amount of water forming a toilet water seal; the water replenisher mechanism 1 includes a water replenishing body 11, which is provided with a water inlet 111 and a water outlet 112; it is characterized in that it also includes an adjustment switching component 12, which is configured on the water replenishing body 11.

[0037] The regulating and switching assembly 12 includes a water flow chamber 121 , a water outlet chamber 122 , at least two water flow channels 123 , at least two regulating valves 124 and a switching group 125 .

[0038] The water flow chamber 121 is formed in the water replenishment body 11 and is connected to the water inlet 111 and the two water flow channels 123 respectively; the two regulating valves 124 are partially placed in the water flow chamber 121 and are used to adjust the flow area of ​​the water flow channels 123.

[0039] The water outlet chamber 122 is provided with a mounting shaft 1221 and a limiting boss 1222; the mounting shaft 1221 is formed at the center position of the water outlet chamber 122; the limiting boss 1222 is formed at the edge of the water outlet chamber 122; the switching group 125 is sleeved on the mounting shaft 1221, and the rotation range of the switching group 125 is limited by the limiting boss 1222.

[0040] The two regulating valves 124 are arranged perpendicular to the water inlet direction of the water inlet 111, and are rotatably installed in the water flow chamber 121, and cooperate with the water flow chamber 121 to adjust the water seal replenishment amount when the toilet is fully flushed and / or half flushed; a water flow portion 1241 and a cutoff wall 1242 are formed on the peripheral wall of the regulating valve 124; wherein, each of the regulating valves 124 is arranged perpendicular to the water inlet direction of the water inlet 111, and is rotated by external force to adjust the area of ​​the water flow portion 1241 between the cutoff wall 1242 on the peripheral wall of the regulating valve 124 and the side wall of the water flow chamber 121; one end of each regulating valve 124 extends into the water flow channel 123, and the other end is exposed to the water replenishment body 11, and a force-applying portion 1243 is formed on the end face exposed at one end of the water replenishment body 11.

[0041] The intercepting wall 1242 cooperates with the side wall of the water passage chamber 121 to adjust the flow area of ​​the water passage portion 1241 .

[0042] The switching group 125 includes a rotating part 1251, a water sealing part 1252, a first sealing part 1253 and a second sealing part 1254; the switching group 125 is arranged in the water outlet chamber 122, and is used to switch and block the two water passages 123; the switching group 125 forms a circumferential blockage of any water passage 123 through rotational motion, so that the other water passage 123 is connected to the water outlet 112.

[0043] The rotating member 1251 has two arc-shaped blocks 1251a on its circumferential wall; the rotating member 1251 passes through the water-sealing member 1252 and is mounted on the mounting shaft 1221, and the two arc-shaped blocks 1251a on the rotating member 1251 are respectively located on both sides of the limiting boss 1222; wherein, the arc-shaped block 1251a on the rotating member 1251 rests on one side of the limiting boss 1222, and the corresponding water-sealing member 1252 blocks one of the water passages 1231; the rotating member 1251 also has an assembly hole 1251b; the assembly hole 1251b corresponds to the convex portion 1252a, so that when the rotating member 1251 rotates, the water-sealing member 1252 is driven to rotate synchronously.

[0044] The water sealing member 1252 is hollow and has a convex portion 1252a on its inner wall. The convex portion 1252a is used to be assembled with the rotating member 1251 to form synchronous rotation.

[0045] The first sealing member 1253 abuts against the rotating member 1251 , and the second sealing member 1254 is sleeved on the side of the water sealing member 1252 close to the rotating member 1251 . The first sealing member 1253 and the second sealing member 1254 are used to seal the switching group 125 and the water replenishing body 11 .

[0046] The full row button 2 and the half row button 3 are respectively in contact with the switching group 125; when the full row button 2 or the half row button 3 moves downward, the switching group 125 is driven to rotate to block the first water channel 1231 or the second water channel 1232.

[0047] A drain valve 4 includes a lower shell 41 and a cover plate 42, and is characterized in that it also includes a water replenisher mechanism 1.

[0048] The lower shell 41 is provided with a receiving chamber 411 ; the receiving chamber 411 is used to install the water replenishing body 11 of the water replenishing device mechanism 1 ;

[0049] The cover plate 42 is snap-connected to the lower shell 41 to limit the two regulating valves 124 to be installed in the water flow chamber 121 of the water replenishment body 11 ; a flow level mark 421 is also provided on the cover plate 42 .

[0050] During actual assembly:

[0051] (1) Prepare a water replenishment body 11, which includes a water inlet 111, a water outlet 112, a water flow chamber 121 and a water outlet chamber 122. The water replenishment body 11 is formed by injection molding; the water flow chamber 121 is connected to the water inlet 111 and the two water flow channels 123 respectively; a mounting shaft 1221 and a limiting boss 1222 are formed at the center position and the edge of the water outlet chamber 122; the mounting shaft 1221 is provided for the switching group 125 to be mounted, and the limiting boss 1222 limits the rotation range of the switching group 125.

[0052] (2) Install two regulating valves 124, partially place the two regulating valves 124 in the water flow chamber 121, and set them perpendicular to the water inlet direction of the water inlet 111, so that they cooperate with the water flow chamber 121 to adjust the water seal replenishment amount when the toilet is fully flushed and / or half flushed.

[0053] (3) Assemble the switching group 125, which includes a rotating member 1251, a water sealing member 1252, a first sealing member 1253 and a second sealing member 1254; first, the first sealing member 1253 is brought into contact with the rotating member 1251, and then, the second sealing member 1254 is sleeved on the side of the water sealing member 1252 close to the rotating member 1251; then, the rotating member 1251 is passed through the water sealing member 1252, and the assembly hole 1251b on the rotating member 1251 is matched with the convex portion 1252a on the inner wall of the water sealing member 1252, so that when the rotating member 1251 rotates, the water sealing member 1252 is driven to rotate synchronously; finally, the switching group 125 is installed on the mounting shaft 1221 through the rotating member 1251, and the two arc-shaped blocks 1251a on the rotating member 1251 are respectively located on both sides of the limiting boss 1222.

[0054] (4) Installing the water replenisher mechanism 1, the full-row button 2, and the half-row button 3; first, install the water replenisher mechanism 1 on the lower shell 41; the lower shell is also formed by injection molding, and is provided with a accommodating cavity 411 for installing the water replenishing body 111; then, the full-row button 2 and the half-row button 3 are respectively brought into contact with the switching group 125, so that the full-row button 2 or the half-row button 3 drives the switching group 125 to rotate when moving downward, thereby blocking the first water passage 1231 or the second water passage 1232.

[0055] (5) Install the cover plate 42, install the cover plate 42 on the end of the regulating valve 124 exposed to the water replenishment body 11, and snap-connect the cover plate to the lower shell 41 to limit the two regulating valves 124 in the water flow chamber 121 of the water replenishment body 11.

[0056] When using:

[0057] According to the flow gear mark 421 on the cover plate 42, the force-applying parts 1243 exposed on the two regulating valves 124 of the shell are rotated respectively to increase or decrease the flow area of ​​the water flow part 1241 between the intercepting wall 1242 on the peripheral wall of the two regulating valves 124 and the side wall of the water flow chamber 121, thereby adjusting the water seal replenishment amount when the toilet is fully flushed and / or half flushed.

[0058] When the full row button 2 or the half row button 3 is pressed, the full row button 2 or the half row button 3 moves downward, thereby driving the rotating member 1251 abutting against it to rotate forward or reverse; because the assembly hole 1251b on the rotating member 1251 is limitedly assembled with the convex portion 1252a on the inner wall of the water sealing member 1252, the rotating member 1251 drives the water sealing member 1252 to rotate synchronously; when the arc block 1251a on the peripheral wall of the rotating member 1251 is parked on one side of the limiting boss 1222, the water sealing member 1252 blocks the first water passage 1231 or the second water passage 1232; at this time, water flows in from the water inlet 111, and then flows into the water outlet chamber 122 after being regulated by the two regulating valves 124; because one of the water passages 123 is blocked by the water sealing member 1252, the water flow can only be conducted to the water outlet 112 through the other water passage 123 to achieve water replenishment (see Figures 6 and 7 ).

[0059] Stop pressing the full-flush button 2 or the half-flush button 3, and the toilet tank will store water; when the water accumulates to the same level as the lower side of the switching group 125, the switching group 125 is lifted upward by the buoyancy of the water, thereby driving the full-flush button 2 or the half-flush button 3 to lift upward; until both sides of the switching group 125 are flush, the full-flush button 2 or the half-flush button 3 is reset.

[0060] The present invention provides a water replenisher mechanism and a drain valve with a simple structure and ease of use, solving the problems of existing drain valves, such as large size, difficulty in installation, and insufficient adaptability. The present invention integrates a regulating valve and a switching group and arranges them within a water replenisher body, which not only reduces the overall volume occupied by the water replenisher, but also enables the entire regulating valve and switching group to rotate together along the outer circumference of the drain valve. When installing the water inlet tank, the position can be adjusted first, facilitating the installation of other accessories. The compactness and integration also improve the adaptability of the water replenisher mechanism to different water tank sizes. Furthermore, only one pipeline is provided at the water inlet and outlet ends of the water replenisher mechanism. Compared with the existing at least two fixed outlet pipelines, the water inlet and outlet directions of the present water replenisher mechanism can be freely changed. During actual installation, the water inlet and outlet can be selected for installation according to different assembly scenarios, effectively improving the versatility of the water replenisher mechanism and expanding its scope of application. During installation, the present invention allows the selection of drain pipes of different lengths as needed, allowing the water replenisher mechanism to be freely rotated and adjusted during installation, thereby effectively reducing the difficulty of installing the drain valve as a whole.

[0061] The above description of the specification and embodiments is used to explain the protection scope of the present utility model, but does not constitute a limitation on the protection scope of the present utility model.

Claims

1. A water replenisher mechanism for adjusting the amount of water used to form a toilet water seal; the water replenisher mechanism comprises a water replenishing body having a water inlet and a water outlet; and is characterized in that: It also includes a regulating and switching assembly, which is configured on the water replenishing body; the regulating and switching assembly includes a water flow chamber, a water outlet chamber, at least two water flow channels, at least two regulating valves and a switching group; The water flow chamber is formed in the water supply body and is connected to the water inlet and the two water flow channels respectively; the two regulating valves are partially placed in the water flow chamber and are used to adjust the flow area of ​​the water flow channel; The two regulating valves are arranged perpendicular to the water inlet direction and are rotatably mounted in the water passage chamber, and cooperate with the water passage chamber to adjust the water seal replenishment amount when the toilet is fully flushed and / or partially flushed; The switching group is arranged in the water outlet chamber and is used to switch and block the two water passages; the switching group forms a circumferential blockage of any water passage through rotational motion to allow the other water passage to be connected to the water outlet.

2. A water replenisher mechanism according to claim 1, characterized in that: A water flow portion and a cutoff wall are formed on the peripheral wall of each regulating valve; the cutoff wall cooperates with the side wall of the water flow chamber to adjust the flow area of ​​the water flow portion; wherein, each regulating valve is arranged perpendicular to the water inlet direction of the water inlet and is rotated by external force so that the water flow area between the cutoff wall on the peripheral wall of the regulating valve and the side wall of the water flow chamber is increased.

3. A water replenisher mechanism according to claim 2, characterized in that: One end of each regulating valve extends into the water passage, and the other end is exposed to the water replenishing body, and a force-applying portion is formed on the end surface exposed at one end of the water replenishing body.

4. A water replenisher mechanism according to claim 1, 2 or 3, characterized in that: The water outlet chamber is provided with a mounting shaft and a limiting boss; the mounting shaft is formed at the center of the water outlet chamber; the limiting boss is formed at the edge of the water outlet chamber; the switching group is sleeved on the mounting shaft, and the rotation range of the switching group is limited by the limiting boss.

5. A water replenisher mechanism according to claim 4, characterized in that: The switching group includes a rotating part and a water-sealing part; two arc-shaped blocks are provided on the peripheral wall of the rotating part; the water-sealing part is hollow and has a convex portion on its inner wall, which is used to limit the assembly with the rotating part and form synchronous rotation; the rotating part passes through the water-sealing part and is installed on the mounting shaft, and the two arc-shaped blocks on the rotating part are respectively located on both sides of the limiting boss; wherein, the arc-shaped block on the rotating part rests on one side of the limiting boss, and the corresponding water-sealing part blocks one of the water passages.

6. A water replenisher mechanism according to claim 5, characterized in that: The rotating member is further provided with an assembly hole; the assembly hole is matched with the convex portion so that the rotating member drives the water sealing member to rotate synchronously when the rotating member rotates.

7. A water replenisher mechanism according to claim 6, characterized in that: The switching group also includes a first seal and a second seal; the first seal abuts against the rotating member; the second seal is sleeved on the side of the water sealing member close to the rotating member; the first and second seals are used to seal the switching group and the water replenishing body.

8. The water replenisher mechanism according to claim 1, characterized in that: It also includes a full row of buttons and a half row of buttons; the full row of buttons and the half row of buttons are respectively abutted against the switch group; The full row buttons or the half row buttons drive the switching group to rotate when moving downward to block the first water flow channel or the second water flow channel.

9. A drain valve comprising a lower housing and a cover plate, characterized in that: It also includes a water replenisher mechanism as described in any one of claims 1 to 8; a accommodating cavity is provided on the lower shell; the accommodating cavity is used to install the water replenishing body of the water replenishing mechanism; the cover plate is snap-connected to the shell to limit the two regulating valves to be installed in the water flow chamber of the water replenishing body.

10. A drain valve according to claim 9, characterized in that: The cover plate is also provided with a flow rate gear mark.

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