A new drain valve

Abstract

The utility model discloses a novel drainage valve, it includes module valve, valve core, full row pull rod, half row pull rod, base and upper cover, the module valve includes two upper and lower installation valve body, the valve body of upper as half row valve, the valve body of lower as full row valve, and with base installation, the valve body includes casing, swing hook, float rod and float, when adding water, water enters casing, and buoyancy promotes float to go up along casing and drive float rod to float, and promote swing hook to turn positive reset, the valve core is arranged in the casing of two valve bodies, and is equipped with the water sealing piece of hanging block and bottom in its side wall. The utility model discloses a valve body of same structure constitutes module valve, and valve body can be as full row valve, also can be as half row valve, need not distinguish when assembling, and only need to open same mould can realize, need not extra design different structure's mould, greatly reduced production cost, and through structural design, can improve the compatibility between each valve body and accessory.

Description

Technical Field

[0001] This utility model relates to the field of drainage valve technology, and in particular to a novel drainage valve. Background Technology

[0002] Existing toilet tanks use drain valves with two modes: full-flush and half-flush. Full-flush drains a large volume of water, typically emptying the entire tank with a strong impact, primarily for defecation. Half-flush drains a smaller volume of water, typically emptying only a portion of the tank with a weaker impact, primarily for urination. However, the existing full-flush and half-flush drain valves have different structures. To achieve these different functions, two different structures need to be designed, requiring corresponding molds during design and production, resulting in high production costs. The installation of each component also needs to be designed to be compatible, leading to high maintenance costs in the later stages. Therefore, a new type of modular drain valve with identical valve body structures for both full-flush and half-flush drains is needed. Only one module is required to produce both valve bodies, reducing production costs while ensuring high compatibility. Utility Model Content

[0003] The purpose of this utility model is to provide a novel drain valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel drain valve includes a modular valve, a valve core, a top cover, a full-drain lifting rod, a half-drain lifting rod, and a base;

[0006] The modular valve includes two valve bodies installed vertically, with the upper valve body serving as a half-exhaust valve and the lower valve body serving as a full-exhaust valve, and is installed with a base.

[0007] The valve body includes a housing, a swing hook, a float, and a float cylinder. One end of the swing hook is rotatably installed inside the housing, and the other end is rotatably connected to the float. The float and the float cylinder are engaged. When water is added, water enters the housing, and the buoyancy pushes the float cylinder to move upward along the housing, causing the float to float up and pushing the swing hook to rotate to its original position.

[0008] The valve core includes a semi-restricting sleeve, which passes through the housing of the upper cover and two valve bodies and moves up and down. Its side wall has a hanging block that engages with a swing hook, and its bottom has a sealing plate that engages with a base. The upper cover is installed on the top of the upper valve body housing and has a channel communicating with the housing and a semi-restricting rail. The semi-restricting sleeve is fitted onto the valve core and movably mounted on the semi-restricting rail, moving up and down along it, thus limiting its range of motion. The full-range lifting rod is installed on the valve core; when pulled... When the full-discharge lifting rod is pulled, it moves the valve core upward until the corresponding full-discharge hanging block is placed inside and the buoyancy of the float supports the uprighting hook. The sealing plate is completely detached from the base for full discharge. The half-discharge lifting rod is installed on the half-discharge limiting sleeve. When the half-discharge lifting rod is pulled, it drives the valve core and the half-discharge limiting sleeve to move upward along the half-discharge rail until the corresponding half-discharge hanging block is placed inside and the buoyancy of the float supports the uprighting hook. The sealing plate is partially detached from the base for half-discharge.

[0009] Furthermore, the inner wall of the shell is provided with an inner cylinder with the same upper and lower parts and symmetrically arranged rotating holes. The float is sleeved on the inner cylinder and moves up and down along it. The swing hook has a rotating part at the end away from the float and is rotatably installed in the rotating hole. A rotating rod is provided at the other end of the swing hook. The swing hook has an O-shaped structure and is placed above the inner cylinder. The valve core passes through the swing hook, the inner cylinder and the float. The top of the float is provided with a rotating clamp that is rotatably installed with the rotating rod. The side wall is provided with multiple locking teeth. The float is provided with locking claws. The floating height is adjusted by locking the locking claws with the locking teeth.

[0010] Furthermore, the shell is provided with a water inlet, multiple water outlets, an adjusting plate, an inner guide block, and an outer guide rail. The float is provided with a limiting part that moves up and down at the water inlet and a guide groove that cooperates with the inner guide block. The float moves up and down along the inner cylinder and the inner guide block. The water outlets are arranged vertically. The shell is provided with vertical locking rails on both sides. The adjusting plate is provided with locking blocks at both ends that cooperate with the locking rails. The adjusting plate covers each water outlet. By pushing the locking blocks to the position of the locking rails, the area of ​​the water outlet outside the adjusting plate is adjusted. When the adjusting plate is pushed up, the area of ​​the water outlet increases; when the adjusting plate is pushed down, the area of ​​the water outlet decreases.

[0011] Furthermore, the housing has a first mark on one side of the adjusting plate to indicate its position and a second mark on the side of the water inlet to indicate the position of the float, and the limiting part cooperates with the second mark.

[0012] Furthermore, the valve core also includes an overflow pipe, which passes through the channel, the two housings and the two floats and moves up and down. The hanging block is set on the side wall of the overflow pipe and cooperates with the swing hook. The swing hook has a platform on the side away from the float, and the hanging block and the swing hook cooperate with the platform.

[0013] Furthermore, both the platform and the hanging block are provided with mutually cooperating inclined parts.

[0014] Furthermore, the overflow pipe has two vertically arranged water-sealing protrusions at the bottom, and the water-sealing plate is sleeved between the two water-sealing protrusions. The water-sealing plate is clamped between the two protrusions by two fasteners.

[0015] Furthermore, the bottom of the upper cover is provided with a first inner seat, and the side wall of the first inner seat is provided with two first snap-fit ​​blocks. The top side wall of the housing is provided with two snap-fit ​​interfaces and a bottom second inner seat. The side wall of the second inner seat is provided with two second snap-fit ​​blocks and a limiting protrusion ring. The base is provided with two third snap-fit ​​blocks on its inner wall. The upper cover is placed on the top of the adjacent housing, and its first inner seat is inserted into the housing. Its first snap-fit ​​blocks are snapped into the snap-fit ​​interfaces. Among the two adjacent housings, the upper housing is inserted into the lower housing through the second inner seat and is snapped into the snap-fit ​​interface of the lower housing through the second snap-fit ​​blocks. The second inner seat of the lower housing is inserted into the base and is snapped into the limiting protrusion ring of the second inner seat through the third snap-fit ​​blocks.

[0016] Furthermore, both the housing and the base are provided with limiting plates at the top, and the housing is provided with limiting openings on the side wall. After the second bases of two adjacent housings are inserted and snapped together, the limiting plate of the lower housing is inserted into the limiting opening of the upper housing to restrict the rotation of the two housings. The base is installed with the adjacent housing, and its limiting plate is inserted into the limiting opening of the adjacent housing.

[0017] Furthermore, the sidewall of the shell is provided with multiple water passage holes.

[0018] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] 1. This utility model uses valve bodies with the same structure to form modular valves. The valve body can be used as a full-exhaust valve or a half-exhaust valve. There is no need to distinguish them during assembly, and only one set of molds is needed to achieve this. There is no need to design molds with different structures, which greatly reduces production costs. Moreover, through structural design, the compatibility between various valve bodies and accessories can be improved.

[0020] 2. The valve body of this utility model can achieve full discharge by simply pulling the full discharge lifting rod, which causes the overflow pipe to drive the swing hook to rotate in its entirety. For half discharge, only half discharge lifting rod needs to be pulled, which causes the overflow pipe to drive the swing hook to rotate in its halftyth stroke. The structure is ingenious and does not require a complex structure, thus improving the compatibility of the modular valve. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the present invention from another angle.

[0023] Figure 3 This is an overall sectional view of the present invention;

[0024] Figure 4 This is a schematic diagram of the valve core of this utility model;

[0025] Figure 5 This is a schematic diagram of the top cover of this utility model;

[0026] Figure 6 This is an exploded view of the valve body of this utility model;

[0027] Figure 7 This is another exploded view of the valve body of this utility model;

[0028] Figure 8 This is a cross-sectional view of the valve body of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] Module valve 1; Valve core 2; Full-range lifting rod 3; Half-range lifting rod 4; Base 5; Limiting plate 6; Valve body 11; Housing 12; Swing hook 13; Float rod 14; Float 15; Inner cylinder 121; Rotary hole 122; Water outlet 123; Water outlet 124; Adjusting plate 125; Inner guide block 126; Outer guide rail 127; Locking rail 128; Locking interface 1211; Second inner seat 1212; Second locking block 1213; Limiting protrusion ring 1214; Limiting Position port 1215; water passage hole 1216; rotating part 131; rotating rod 132; platform 133; rotating clamp 141; locking tooth 142; limiting part 153; locking claw 151; guide groove 152; hanging block 21; water sealing plate 22; top cover 23; overflow pipe 24; half row limiting sleeve 25; channel 231; half row rail 232; first inner seat 233; first locking block 234; water sealing protrusion 241; fastener 242; third locking block 51. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] It should be noted that in this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element of this utility model must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Example

[0034] Cooperate Figures 1 to 8As shown, this utility model discloses a novel drain valve, including a modular valve 1, a valve core 2, a full-drain lifting rod 3, a half-drain lifting rod 4, and a base 5.

[0035] The modular valve 1 includes two valve bodies 11 installed vertically, with the upper valve body 11 serving as a half-exhaust valve and the lower valve body 11 serving as a full-exhaust valve, and is installed with the base 5.

[0036] The valve body 11 includes a housing 12, a swing hook 13, a float 14, and a float 15. One end of the swing hook 13 is rotatably installed inside the housing 12, and the other end is rotatably connected to the float 14. The float 14 is engaged with the float 15. When water is added, water enters the housing 12, and the buoyancy pushes the float 15 to move upward along the housing 12, causing the float 14 to float up and pushing the swing hook 13 to rotate back to its original position.

[0037] The modular valve 1 is composed of valve bodies 11 with the same structure. The valve body 11 can be used as a full-exhaust valve or a half-exhaust valve. There is no need to distinguish them during assembly, and only one set of molds is needed. There is no need to design molds with different structures, which greatly reduces the production cost. Moreover, through structural design, the compatibility between each valve body 11 and accessories can be improved.

[0038] The valve core 2 includes a hanging block 21, a water sealing plate 22, an upper cover 23, an overflow pipe 24, and a half-row limit sleeve 25.

[0039] The valve core 2 is inserted into the housing 12 of the upper cover 23 and the two valve bodies, and moves up and down. Its side wall has a hanging block 21 that cooperates with the swing hook 13, and its bottom has a sealing plate 22 that cooperates with the base 5. The upper cover 23 is installed on the top of the housing 12 of the upper valve body 11. It has a channel 231 communicating with the housing 12 and a half-row rail 232. The half-row limiting sleeve 25 is fitted onto the valve core 2 and movably installed on the half-row rail 232, moving up and down along the half-row rail 232. The half-row rail 232 restricts its range of motion. The full-row lifting rod 3 is installed on the valve core 2. When the full-row lifting rod 3 is pulled, it pulls the valve... The valve core 2 moves upward until the corresponding full-row hanging block 21 is placed inside, and the buoyancy of the float 15 supports the uprighting hook 13. The float 14 moves with the float 15, and the sealing plate is completely detached from the base 5 for full-row discharge. The half-row lifting rod 4 is installed on the half-row limiting sleeve 25. When the half-row lifting rod 4 is pulled, it pulls the valve core 2 upward, which drives the valve core 2 and the half-row limiting sleeve 25 to move upward along the half-row rail until the corresponding half-row hanging block is placed inside, and the buoyancy of the float supports the uprighting hook. The float 14 moves with the float 15, and the sealing plate is partially detached from the base 5 for half-row discharge.

[0040] In this embodiment, the base 5 is installed at the outlet of the toilet tank and has a drain outlet for draining water.

[0041] The inner wall of the shell 12 is provided with an inner cylinder 121 with the same upper and lower parts and symmetrically arranged rotating holes 122. The float 15 is sleeved on the inner cylinder 121 and moves up and down along it. The swing hook 13 has a rotating part 131 at the end away from the float 14 and is rotatably installed in the rotating hole 122. The other end of the swing hook 13 has a rotating rod 132. The swing hook 13 has an O-shaped structure and is placed above the inner cylinder. The valve core 2 passes through the swing hook 13, the inner cylinder and the float 15. The top of the float 14 is provided with a rotating clamp 141 that is rotatably installed with the rotating rod 132. The side wall is provided with multiple locking teeth 142, and each locking tooth 142 is arranged at equal intervals. The float 15 is provided with a locking claw 151. The floating height of the float 15 is adjusted by the locking claw 151 engaging with the locking teeth 142.

[0042] The housing 12 is provided with a water inlet 123, multiple water outlets 124, an adjusting plate 125, an inner guide block 126, and an outer guide rail 127. The float 15 is provided with a limiting part 153 that moves up and down at the water inlet 123 and a guide groove 152 that cooperates with the inner guide block 126. The float 15 moves up and down along the inner cylinder 121 and the inner guide block 126. The water outlets 124 are arranged vertically. The housing 12 is provided with vertically oriented retaining rails 128 on both sides. The adjusting plate 125 is located at both ends. The device is equipped with locking blocks that cooperate with the locking rails 128, namely two inwardly hooked protrusions. The two locking blocks are respectively engaged with the two locking rails 128 to prevent the adjusting plate 125 from disengaging. The adjusting plate 125 is placed at each drain outlet 124. By pushing the locking blocks in the position of the locking rails 128, the area of ​​the drain outlet 124 outside the adjusting plate 125 is adjusted. When the adjusting plate 125 is pushed up, the area of ​​the drain outlet 124 increases, and when the adjusting plate 125 is pushed down, the area of ​​the drain outlet 124 decreases.

[0043] The overflow pipe 24 passes through the channel 231, the two housings 12, and the two floats 15, and moves up and down. The half-row limiting sleeve 25 is fitted onto the overflow pipe 24. The hanging block 21 is set on the side wall of the overflow pipe 24 and cooperates with the swing hook 13. There are two valve bodies 11, so there are two hanging blocks 21. The swing hook 13 has a platform 133 on the side away from the float 14. The hanging block 21 cooperates with the platform 133 of the swing hook. The half-row limiting sleeve 25 has a seat, which is connected to the half-row lifting rod 4. The seat has a slider that is movably installed on the half-row rail 232 and moves up and down along the half-row rail 232. The movement range is limited by the half-row rail 232. The full-row lifting rod 3 is installed with the overflow pipe 24, and the half-row lifting rod 4 is connected to the full-row lifting rod 25. The half-discharge limit sleeve 25 is installed, and the water sealing plate 22 is installed at the bottom of the overflow pipe 24. When the full-discharge lifting rod 3 is pulled, it pulls the overflow pipe 24 upward, and the water sealing plate 22 at the bottom is completely detached from the base 5. The hanging block 21 is placed on the platform 133 from bottom to top for full discharge. The float 14 and float 15 follow the water level change to drive the swing hook 13 to rotate the entire length, and the hanging block 21 changes accordingly. When the half-discharge lifting rod 4 is pulled, it pulls the overflow pipe 24 upward, and the water sealing plate 22 at the bottom is partially detached from the base 5. The hanging block 21 is placed on the platform 133 from bottom to top for half discharge. The float 14 and float 15 follow the water level change to drive the swing hook 13 to rotate the entire length, and the hanging block 21 changes accordingly.

[0044] In this embodiment, there are two hanging blocks 21, one for full drainage and the other for half drainage, arranged one above the other. When no full or half drainage operation is being performed, the hanging block 21 is placed below the corresponding swing hook 13. When in use, the corresponding lifting rod is pulled, and the full or half drainage lifting rod drives the overflow pipe 24 to move, causing the corresponding full or half drainage hanging block to be placed on the corresponding swing hook platform. The swing hook platform restricts the overflow pipe 24 from falling, allowing for full or half drainage operation. When the water level drops, the float 15 and float rod 14 follow the water level and drop. The float rod 14 pulls the swing hook 13 to rotate, the platform 133 separates from the hanging block 21, the overflow pipe 24 falls downward, and pushes the sealing plate 22 downward to block the drain outlet.

[0045] The half-row limit sleeve 25 restricts the upward movement of the valve core 2. When the half-row hanging block 21 is placed on the swing hook platform of the valve body 11 corresponding to the half-row module, the full-row hanging block 21 will not be placed on the swing hook platform of the valve body 11 corresponding to the full-row module. The purpose of this design is that when the half-row is lifted, only the half-row function will be triggered, and it will not become the full-row function.

[0046] When the corresponding full-row lifting rod 3 and half-row lifting rod 4 are released, the water level rises when the float is reset and enters the shell 12. The buoyancy pushes the float 15 to float upward. The float 15 and the float rod 14 push the swing hook 13 to rotate and reset. After the swing hook 13 is reset, it is set horizontally.

[0047] In this embodiment, the float 15 has a certain buoyancy, which, together with the drain outlet 124, can slow down the descent speed of the overflow pipe 24. By adjusting the leakage area of ​​the drain outlet 124, the leakage speed can be adjusted, thereby adjusting the speed of the overflow pipe 24. When the area of ​​the drain outlet 124 is reduced, the leakage area is reduced, thereby slowing down the descent speed of the overflow pipe 24 and prolonging the time for the sealing plate 22 to leave the base 5, thus increasing the drainage volume. Conversely, increasing the leakage area increases the descent speed of the overflow pipe 24, reduces the time for the sealing plate 22 to leave the base 5, and reduces the drainage volume.

[0048] In this embodiment, the drain outlets 124 can all be the same size, or the area of ​​the holes can increase sequentially from bottom to top.

[0049] Both the platform 133 and the hanging block 21 are equipped with mutually cooperating inclined parts.

[0050] The housing 12 has a first mark on the side of the adjusting plate 125 to indicate its position and a second mark on the side of the water inlet to indicate the position of the float 15. The limiting part 153 cooperates with the second mark.

[0051] The top cover 23 has a first inner seat 233 at its bottom, and two first locking blocks 234 on its side wall. The top side wall of the housing 12 has two locking interfaces 1211 and a second inner seat 1212 at its bottom. The side wall of the second inner seat 1212 has two second locking blocks 1213 and a limiting protrusion ring 1214. The base 5 has two third locking blocks 51 on its inner wall. The top cover 23 covers the top of the adjacent housing 12, and its first inner seat 233 is inserted into the housing. Inside the body 12, the first snap-fit ​​block 234 snaps into the snap-fit ​​interface 1211. Among the two adjacent housings 12, the upper housing 12 is inserted into the lower housing 12 through the second inner seat 1212 and snaps into the snap-fit ​​interface 1211 of the lower housing 12 through the second snap-fit ​​block 1213. The second inner seat 1212 of the lower housing 12 is inserted into the base 5 and snaps into the limiting protrusion ring 1214 of the second inner seat 1212 through the third snap-fit ​​block 1213.

[0052] The overflow pipe 24 has two vertically arranged water-sealing protrusions 241 at the bottom. The water-sealing plate 22 is fitted between the two water-sealing protrusions 241. The water-sealing plate 22 is clamped between the two water-sealing protrusions 241 by two fasteners 242. The fasteners 242 are C-shaped pieces, which are used to fix the water-sealing plate 22. The function of the water-sealing plate 22 is to seal the drain outlet of the base 5.

[0053] Both the housing 12 and the base 5 are provided with limiting plates 6 at the top. The side wall of the housing 12 is provided with a limiting port 1215. After the second base 5 of two adjacent housings 12 are inserted and snapped together, the limiting plate 6 of the lower housing 12 is inserted into the limiting port 1215 of the upper housing 12 to restrict the rotation of the two housings 12. The base 5 is installed with the adjacent housing 12, and its limiting plate 6 is inserted into the limiting port 1215 of the adjacent housing 12.

[0054] The side wall of the shell 12 is provided with multiple water passage holes 1216.

[0055] The valve body 11 achieves full discharge by simply pulling the full discharge lever 3, which causes the overflow pipe to drive the swing hook 13 to rotate fully. For half discharge, simply pull the half discharge lever 4, which causes the overflow pipe to drive the swing hook 13 to rotate halfway. The structure is ingenious and does not require a complex structure, thus improving the compatibility of the module valve 1.

[0056] In this embodiment, the half-stroke rotation is determined by the length of the half-row rail 232 of the upper cover 23. The half-row lifting rod 4 and the half-row limiting sleeve 25 are connected by screws or by snap-fit. The half-row limiting sleeve 25 can only slide up and down along the half-row rail 232. The overflow pipe 24 is provided with an upper limit plate for cooperating with the half-row limiting sleeve 25. When the half-row limiting sleeve 25 moves upward, the half-row limiting sleeve 25 abuts against the upper limit plate and drives the overflow pipe 24 to move, performing a half-stroke movement. At this time, the overflow pipe 25 can only move upward halfway, so pushing the swing hook 13 can only push it to rotate halfway. Conversely, when performing a full stroke, the full stroke lifting rod 3 can lift the overflow pipe 25 beyond the half-stroke movement until the full stroke, that is, the angle at which the swing hook 13 can no longer rotate. The angle is not limited in this embodiment and can be adjusted according to the size of the water tank and actual needs, that is, adjusting the size of the swing hook 13 and its position of rotation in the housing 12.

[0057] The water inlet method in this embodiment is not limited and is existing technology.

[0058] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A novel drain valve, characterized in that: Includes modular valve, valve core, top cover, full-row lifting rod, half-row lifting rod, and base; The modular valve includes two valve bodies installed vertically, with the upper valve body serving as a half-exhaust valve and the lower valve body serving as a full-exhaust valve, and is installed with a base. The valve body includes a housing, a swing hook, a float, and a float cylinder. One end of the swing hook is rotatably installed inside the housing, and the other end is rotatably connected to the float. The float and the float cylinder are engaged. When water is added, water enters the housing, and the buoyancy pushes the float cylinder to move upward along the housing, causing the float to float up and pushing the swing hook to rotate to its original position. The valve core includes a semi-restricting sleeve, which passes through the housing of the upper cover and two valve bodies and moves up and down. Its side wall has a hanging block that engages with a swing hook, and its bottom has a sealing plate that engages with a base. The upper cover is installed on the top of the upper valve body housing and has a channel communicating with the housing and a semi-restricting rail. The semi-restricting sleeve is fitted onto the valve core and movably mounted on the semi-restricting rail, moving up and down along it, thus limiting its range of motion. The full-range lifting rod is installed on the valve core; when the valve core is pulled... When the full-discharge lifting rod is pulled, it moves the valve core upward until the corresponding full-discharge hanging block rests on the swing hook platform supported by the buoyancy of the float. The sealing plate is completely detached from the base during the full discharge. The half-discharge lifting rod is installed on the half-discharge limiting sleeve. When the half-discharge lifting rod is pulled, it drives the valve core and the half-discharge limiting sleeve to move upward along the half-discharge rail until the corresponding half-discharge hanging block rests on the swing hook platform supported by the buoyancy of the float. The sealing plate is detached from the base during the half-discharge.

2. The novel drain valve as described in claim 1, characterized in that: The inner wall of the shell is provided with an inner cylinder with the same upper and lower parts and symmetrically arranged rotating holes. The float is sleeved on the inner cylinder and moves up and down along it. The swing hook has a rotating part at the end away from the float and is rotatably installed in the rotating hole. A rotating rod is provided at the other end of the swing hook. The swing hook has an O-shaped structure and is placed above the inner cylinder. The valve core passes through the swing hook, the inner cylinder and the float. The top of the float is provided with a rotating clamp that is rotatably installed with the rotating rod. The side wall is provided with multiple locking teeth. The float is provided with locking claws. The floating height is adjusted by locking the locking claws with the locking teeth.

3. A novel drain valve as described in claim 2, characterized in that: The shell is provided with a water inlet, a water outlet, an adjusting plate, an inner guide block, and an outer guide rail. The float is provided with a limiting part that moves up and down at the water inlet and a guide groove that cooperates with the inner guide block. The float moves up and down along the inner cylinder and the inner guide block. The water outlets are arranged vertically. The shell is provided with vertical locking rails on both sides. The adjusting plate is provided with locking blocks at both ends that cooperate with the locking rails. The adjusting plate covers the water outlet. By pushing the locking blocks to the position of the locking rails, the area of ​​the water outlet outside the adjusting plate can be adjusted. When the adjusting plate is pushed up, the area of ​​the water outlet increases; when the adjusting plate is pushed down, the area of ​​the water outlet decreases.

4. A novel drain valve as described in claim 3, characterized in that: The housing has a first mark on one side of the adjusting plate to indicate its position and a second mark on the side of the water inlet to indicate the position of the float. The limiting part cooperates with the second mark.

5. A novel drain valve as described in claim 1, characterized in that: The valve core also includes an overflow pipe, which passes through the channel, the two shells and the two floats and moves up and down. The swing hook has a platform on the side away from the float, and the hanging block is set on the side wall of the overflow pipe to cooperate with the swing hook platform.

6. A novel drain valve as described in claim 5, characterized in that: Both the platform and the hanging block are equipped with mutually cooperating inclined parts.

7. A novel drain valve as described in claim 5, characterized in that: The overflow pipe has two water-sealing protrusions arranged vertically at the bottom. The water-sealing plate is sleeved between the two water-sealing protrusions, and the water-sealing plate is clamped between the two protrusions by two fasteners.

8. A novel drain valve as described in claim 1, characterized in that: The top cover has a first inner seat at its bottom, and the side wall of the first inner seat has two first snap-fit ​​blocks. The top side wall of the housing has two snap-fit ​​interfaces and a second inner seat at the bottom. The side wall of the second inner seat has two second snap-fit ​​blocks and a limiting protrusion ring. The base has two third snap-fit ​​blocks on its inner wall. The top cover is placed on the top of the adjacent housing, and its first inner seat is inserted into the housing. Its first snap-fit ​​blocks are snapped into the snap-fit ​​interfaces. For two adjacent housings, the upper housing is inserted into the lower housing through the second inner seat and is snapped into the snap-fit ​​interface of the lower housing through the second snap-fit ​​blocks. The second inner seat of the lower housing is inserted into the base and is snapped into the limiting protrusion ring of the second inner seat through the third snap-fit ​​blocks.

9. A novel drain valve as described in claim 1, characterized in that: Both the housing and the base are provided with limiting plates at the top, and the housing is provided with limiting openings on the side wall. After the second bases of two adjacent housings are inserted and snapped together, the limiting plate of the lower housing is inserted into the limiting opening of the upper housing to restrict the rotation of the two housings. The base is installed with the adjacent housing, and its limiting plate is inserted into the limiting opening of the adjacent housing.

10. A novel drain valve as described in claim 1, characterized in that: The shell sidewall is provided with multiple water passage holes.

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