Novel toilet drain valve
By designing a new type of toilet drain valve that combines a float, crank, and hook, the problem of not being able to control multiple drainage volumes in existing technologies has been solved. This enables stable control of multiple drainage volumes, adapts to different tank sizes, and improves practicality.
Patent Information
- Application Number
- CN202520157235.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing toilet flush valves cannot control various different drainage volumes, resulting in incompatibility with various sizes of water tanks and poor practicality.
A novel toilet drain valve has been designed, comprising a drain valve body, an inner core tube, a connecting rod mechanism, a drain control mechanism, and a wired control mechanism. Through the cooperation of a float, a crank, and a hook, the inner core tube can move up and down, adjust the size of the drain hole, and control various drainage volumes.
It achieves stable control of various drainage volumes, improves the practicality of the toilet drain valve, and can adapt to different tank sizes.
Smart Images

Figure CN223838217U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of toilet tank drain valves, and more specifically, to a novel toilet drain valve. Background Technology
[0002] In everyday life, toilet flush valves work by pressing a button to swing a lever, which pulls a cable and causes the travel hook to swing upward. The hook slides on the shoulder of the inner tube and lifts the inner tube, which has an end cap at the bottom. Lifting the end cap opens the water outlet for drainage. The water flow of this type of flush valve is usually controlled by two floats. However, two floats can only control two different drainage volumes, making it impossible to control multiple different drainage volumes. This results in the valve being incompatible with various sizes of water tanks, leading to poor practicality. Utility Model Content
[0003] This invention provides a novel toilet drain valve, which aims to improve the technical problem of existing drain valves being unable to control various different drainage volumes, resulting in poor practicality.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: A novel toilet drain valve includes a drain valve body, an inner core tube, a linkage mechanism, a drain control mechanism, and a wired control mechanism. The inner core tube is installed vertically within the drain valve body, and a sealing plate is installed at the lower end of the inner core tube. The linkage mechanism is installed on the upper side of the drain valve body, and the wired control mechanism is connected to the inner core tube through the linkage mechanism. The drain control mechanism includes a base, a first float, and a crank. A guide hole is opened in the middle of the base, and support columns are set on both sides of the guide hole. The first float is vertically movable between the two support columns. One end of the crank is hinged to the upper end of one of the support columns, and the other end of the crank is movably installed on the first float. A step is set on the side of the crank near the hinge point. One side of the inner core tube extends upward to form a hook. A drain hole is opened on the side of the drain valve body near the bottom, and an adjustable baffle is provided in the drain hole.
[0005] Furthermore, guide grooves are provided on both sides of the first pontoon, and guide strips are provided on the two support columns, with the guide grooves cooperating with the guide strips.
[0006] Furthermore, a barb is provided on the first buoy, and one end of the crank is placed on the barb.
[0007] Furthermore, a water level marking mechanism is further provided on the base. The water level marking mechanism includes a frame, a second float, and a scale. The frame is rotatably mounted on the two support columns on both sides, and the scale is rotatably mounted on the side of the frame. The second float is installed on the lower side of the scale.
[0008] Furthermore, a support block is installed at the upper end of the inner core tube, and the linkage mechanism includes a swing arm and a lifting rod. One end of the swing arm and one end of the lifting rod are hinged together, the other end of the lifting rod abuts against the bottom of the support block, and the other end of the swing arm is connected to the wire control mechanism.
[0009] Furthermore, the wired control mechanism includes a pull wire, a sleeve, a wired control box, a lever, and a button. One end of the sleeve is connected to the drain valve body, and the other end of the sleeve is connected to the wired control box. The pull wire is placed in the sleeve, one end of the pull wire is connected to the rocker arm, and the other end of the pull wire is connected to the resistance end of the lever. The lever is installed in the wired control box, and the button is installed on the wired control box opposite to the power end of the lever.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] This utility model discloses a novel toilet drain valve with a simple and ingenious design. It includes a drain valve body, an inner core tube, a linkage mechanism, a drain control mechanism, and a wired control mechanism. The inner core tube is vertically movable within the drain valve body, and a sealing plate is installed at its lower end. The linkage mechanism is installed on the upper side of the drain valve body. The wired control mechanism is connected to the inner core tube via the linkage mechanism. The drain control mechanism includes a base, a first float, and a crank. A guide hole is opened in the middle of the base, and support columns are set on both sides of the guide hole. The first float is vertically movable between the two support columns. One end of the crank is hinged to the upper end of one support column, and the other end of the crank is movably installed on the first float. A step is set on the side of the crank near the hinge point. One side of the inner core tube extends upward to form a hook. A drain hole is opened on the side of the drain valve body near the bottom, and an adjustable baffle is provided in the drain hole. The wired control mechanism drives the inner core tube upward through a linkage mechanism, causing the water-sealing plate to move away from the drain outlet. As the inner core tube rises, the hook catches the step. The size of the drain hole is adjusted by the baffle to discharge water from the drain valve body, thus controlling the descent speed of the first float. A slower descent speed results in a larger drainage volume, and vice versa. When the first float reaches its lowest position, the hook disengages from the step, and the water-sealing plate blocks the drain outlet. This allows for stable discharge of various drainage volumes, improving practicality. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of a novel toilet drain valve according to this utility model;
[0014] Figure 2 This is a cross-sectional view of a novel toilet drain valve according to this utility model;
[0015] Figure 3 This is an internal structural diagram of a novel toilet drain valve according to this utility model;
[0016] Figure 4 This is a schematic diagram of the base and crank structure of a novel toilet drain valve according to this utility model.
[0017] Figure 5 This is a cross-sectional view of the drainage control mechanism of a novel toilet drain valve according to this utility model;
[0018] Figure 6 This is a schematic diagram of the water level indicator mechanism of a novel toilet drain valve according to this utility model;
[0019] Figure 7 This is a structural diagram of the drain valve body of a novel toilet drain valve according to this utility model.
[0020] Explanation of main component symbols
[0021] 10. Drain valve body; 101. Inner core tube; 1011. Water sealing plate; 1012. Hook; 1013. Support block; 102. Swing rod; 103. Lifting rod; 104. Base; 1041. Support column; 105. First float; 106. Barb; 107. Crank; 1071. Step; 108. Drain hole; 109. Adjusting baffle;
[0022] 20. Wire control mechanism; 201. Pull cable; 202. Sleeve; 203. Wire control box; 204. Lever; 205. Button;
[0023] 30. Water level marking mechanism; 301. Frame; 302. Second buoy; 303. Scale. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] Example
[0028] Reference Figure 1-5As shown, this utility model discloses a novel toilet drain valve, including a drain valve body 10, an inner core tube 101, a linkage mechanism, a drain control mechanism, and a wired control mechanism 20. The inner core tube 101 is installed inside the drain valve body 10, moving up and down. A sealing plate 1011 is installed at the lower end of the inner core tube 101. The opening and closing of the drain outlet is controlled by raising and lowering the inner core tube 101. The linkage mechanism is installed on the upper side of the drain valve body 10. The wired control mechanism 20 is connected to the inner core tube 101 through the linkage mechanism. Specifically, the wired control mechanism 20 includes a pull wire 201, a sleeve 202, and a wired control box 20. 3. Lever 204 and button 205: One end of sleeve 202 is connected to the drain valve body 10, and the other end of sleeve 202 is connected to the control box 203. Pull wire 201 is placed in sleeve 202, one end of pull wire 201 is connected to rocker arm 102, and the other end of pull wire 201 is connected to the resistance end of lever 204. Lever 204 is installed in control box 203. Button 205 is installed on control box 203 opposite to the power end of lever 204. When button 205 is pressed, lever 204 rotates, driving pull wire 201 to pull rocker arm 102 to rotate, thereby transmitting the pulling force from button 205 to drain valve body 10. A support block 1013 is installed on the upper end of the inner core tube 101. The linkage mechanism includes a swing arm 102 and a lifting rod 103. One end of the swing arm 102 and one end of the lifting rod 103 are hinged together. The other end of the lifting rod 103 abuts against the bottom of the support block 1013. The other end of the swing arm 102 is connected to the wire control mechanism 20. The pull wire 201 drives the swing arm 102 to rotate. The swing arm 102 drives the lifting rod 103 to push the support block 1013 upward. The support block 1013 is installed on the upper end of the inner core tube 101, thereby realizing that pressing the button 205 drives the inner core tube 101 to lift upward, that is, opening the drain outlet to drain water.
[0029] Reference Figure 1-5As shown, the drainage control mechanism includes a base 104, a first float 105, and a crank 107. The base 104 has a guide hole in the middle, and support columns 1041 are provided on both sides of the guide hole. The first float 105 is movably positioned between the two support columns 1041. Guide grooves are provided on both sides of the first float 105, and guide bars are provided on the two support columns 1041. The guide grooves and guide bars cooperate to allow the first float 105 to move vertically up and down along the guide bars according to the water level. One end of the crank 107 is hinged to the upper end of a support column 1041 on one side, and the other end of the crank 107 is movably mounted on the first float 105. Specifically, a barb 106 is provided on the first float 105, and one end of the crank 107 is placed in the barb 106. The crank 107 can move within the barb 106. The up-and-down movement of the float can drive the up-and-down movement of one end of the crank 107. A step 1071 is provided on the side of the crank 107 near the hinge point. The hinged design of one end of the crank 107 and the movable design of the other end can drive the step 1071 to move horizontally and tilted. One side of the inner core tube 101 extends upward to form a shape. The hook 1012 is used to hook the step 1071 when the step 1071 is in a horizontal state. When there is water in the water tank, the first float 105 moves upward under the action of buoyancy, pushing the crank 107 to swing upward around the junction with the support column 1041. At this time, the step 1071 on the crank 107 is in a horizontal state, and the hook on the side of the raised inner core tube 101 will hook the step 1071, so that the sealing plate 1011 continuously leaves the drain outlet. As the water level drops, the first float 105 gradually moves downward, causing the sealing plate 1011 to cover the outlet.
[0030] Reference Figure 1-5 , Figure 7 As shown, a drain hole 108 is opened on the side of the drain valve body 10 near the bottom. The drain hole 108 is equipped with an adjustable baffle 109. The adjustable baffle 109 can move up and down to adjust the size of the drain hole 108. When the drain hole 108 is large, the water in the drain valve body 10 flows out quickly, the first float 105 descends quickly, causing the crank 107 to tilt quickly, and the hook 1012 can quickly disengage from the step 1071. That is, the inner core tube 101 moves downward quickly, and the water sealing plate 1011 covers the outlet, resulting in a small drainage volume. When the drain hole 108 is small, the water in the drain valve body 10 flows out slowly, the first float 105 descends slowly, causing the crank 107 to tilt slowly, and the hook 1012 can quickly disengage from the step 1071. That is, the inner core tube 101 moves downward quickly, and the water sealing plate 1011 covers the outlet, resulting in a small drainage volume. This achieves a stable output of different water volumes and improves practicality.
[0031] Reference Figure 6As shown, a water level indicator mechanism 30 is further provided on the base 104. The water level indicator mechanism 30 includes a frame 301, a second float 302, and a scale 303. The frame 301 is rotatably mounted on two support columns 1041 on both sides, and the scale 303 is rotatably mounted on the side of the frame 301. The second float 302 is installed below the scale 303. Specifically, the second float 302 can move up and down with the water level, causing the scale 303 to move up and down. By observing the scale 303, the water level in the toilet can be determined.
[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A novel toilet drain valve, characterized in that; The device includes a drain valve body, an inner core tube, a linkage mechanism, a drain control mechanism, and a wired control mechanism. The inner core tube is installed vertically within the drain valve body, and a water-sealing plate is installed at the lower end of the inner core tube. The linkage mechanism is installed on the upper side of the drain valve body, and the wired control mechanism is connected to the inner core tube via the linkage mechanism. The drain control mechanism includes a base, a first float, and a crank. The base has a guide hole in the middle, and support columns are provided on both sides of the guide hole. The first float is vertically movable between the two support columns. One end of the crank is hinged to the upper end of one of the support columns, and the other end of the crank is movably installed on the first float. A step is provided on the side of the crank near the hinge point. One side of the inner core tube extends upward to form a hook. A drain hole is provided on the side of the drain valve body near the bottom, and the drain hole is equipped with an adjustable baffle.
2. The novel toilet drain valve according to claim 1, characterized in that: The first pontoon has guide grooves on both sides, and the two support columns are provided with guide strips, with the guide grooves cooperating with the guide strips.
3. The novel toilet drain valve according to claim 1, characterized in that: A barb is provided on the first buoy, and one end of the crank is placed on the barb.
4. The novel toilet drain valve according to claim 1, characterized in that: A water level marking mechanism is further provided on the base. The water level marking mechanism includes a frame, a second float, and a scale. The frame is rotatably mounted on the two support columns on both sides, and the scale is rotatably mounted on the side of the frame. The second float is installed on the lower side of the scale.
5. The novel toilet drain valve according to claim 1, characterized in that: A support block is installed at the upper end of the inner core tube. The linkage mechanism includes a swing arm and a lifting rod. One end of the swing arm and one end of the lifting rod are hinged together. The other end of the lifting rod abuts against the bottom of the support block. The other end of the swing arm is connected to the wire control mechanism.
6. The novel toilet drain valve according to claim 5, characterized in that: The wired control mechanism includes a pull wire, a sleeve, a wired control box, a lever, and a button. One end of the sleeve is connected to the drain valve body, and the other end of the sleeve is connected to the wired control box. The pull wire is placed in the sleeve, with one end connected to the rocker arm and the other end connected to the resistance end of the lever. The lever is installed in the wired control box, and the button is installed on the wired control box opposite to the power end of the lever.