Integrated water tank drainer
By designing an integrated sink drain assembly, the overflow pipe connector and the sewage pipe connector are integrated with the main body of the drain assembly, simplifying the installation structure, solving the problems of complex structure and sealing of existing sink drain assemblies, reducing production costs, and improving drainage efficiency and filtration effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN MENGXING PLASTIC PROD CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-12
AI Technical Summary
Existing sink drainers have complex structures, numerous sealing issues, high production costs, and require complex drain pipe components, making installation and maintenance inconvenient.
An integrated sink drain assembly was designed, comprising the main body of the drain assembly, an outer bowl, a sealing bowl, a filter bowl, and a spring-loaded device. The overflow pipe connector and the sewage pipe connector are integrated with the main body of the drain assembly. The spring-loaded device enables the switching between drainage and water storage states, simplifying the installation structure and reducing production costs.
It achieves stable and reliable drainage function, simplifies the installation process, reduces production costs, improves drainage efficiency and filtration effect, and simplifies maintenance operations.
Smart Images

Figure CN224227912U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of kitchen sink technology, and more specifically to a drain device for kitchen sinks. Background Technology
[0002] Currently, the typical drain structure for kitchen sinks involves a drain outlet at the bottom of the sink, with a valve at the outlet controlling the opening and closing of the connection between the sink and the drain. The most common valve is a rotating body; when horizontal, it blocks the drain outlet, and when vertical, it opens the outlet, allowing wastewater to drain into the drain. Another common type of valve is a spring-loaded valve, which consists of a valve body connected to the bottom of the sink and a spring-loaded valve core within the valve body. Drain fittings used in kitchen sinks often include accessories such as a filter cup to prevent food waste from directly entering the drain pipe and causing blockages. In existing technology, the drain fitting is connected to the drain pipe assembly via a connector. This method is convenient for installation; the drain fitting can be placed at the drain outlet of the sink first, and then the connector of the drain pipe assembly can be tightened. For example, Chinese Patent Publication No. CN205636943U discloses a water tank spring-loaded drainer, including a main body sealed inside the water tank, a drain basket and a spring-loaded valve installed inside the main body; the main body has a drain outlet connected to the drain pipe of the water tank, and the drain basket is connected to the drain outlet through the spring-loaded valve; each time the drain basket is pressed, the spring-loaded valve switches between open and closed states. When the spring-loaded valve is in the open state, the drain outlet and the space inside the drain basket are connected; when the spring-loaded valve is in the closed state, the drain outlet and the space inside the drain basket are isolated. This patented structure can realize water storage and drainage of the water tank by simply pressing the drain basket, making it easy to operate. However, the drawback is that the drainer requires a complex sewage pipe assembly to introduce sewage into the building's sewage system. The existing sewage pipe assembly structure can be seen in Chinese Patent Publication No. CN219547928U, which discloses an integrated drainage trough sewage pipe assembly. Its features include a sewage pipe body and a water seal cap movably installed at the bottom of the sewage pipe body. The sewage pipe body is equipped with a water trough drain connector and an overflow inlet pipe. The water trough drain connector connects to the outlet of the drainage trough. The overflow inlet pipe is equipped with an overflow pipe connection assembly, externally connected to two or more overflow pipes. A partition is installed inside the sewage pipe body, dividing the internal space into an inlet chamber and an outlet chamber. The inlet chamber is connected to the water trough drain connector, and a sewage pipe connector is provided on the side of the outlet chamber for installing a sewage hose extending to the building's sewage outlet. This sewage pipe assembly has a water seal structure, which can achieve odor isolation. However, its disadvantages are also obvious. The entire sewage pipe assembly has a complex structure and uses a lot of accessory connection methods, which will inevitably have certain sealing problems and may cause leakage. Moreover, the production cost is also high. It is necessary to further improve its structure. Summary of the Invention
[0003] The purpose of this utility model is to provide a stable, reliable, easy-to-assemble and disassemble, and cost-saving integrated sink drainer to overcome the shortcomings of existing technologies.
[0004] The present invention achieves the above objectives by adopting the following technical solution: an integrated sink drainer, characterized in that it includes a drainer body, an outer bowl, a sealing bowl, a filter bowl, and a spring-loaded device. The outer bowl is disposed inside the drainer body. An overflow pipe connector and a drain pipe connector are provided on the side of the drainer body. The overflow pipe connector and the drain pipe connector are integrally formed with the drainer body. A drain hole and a fixing position corresponding to the spring-loaded device are provided at the bottom of the outer bowl.
[0005] The filter bowl and the sealing bowl are respectively installed on the pop-up device, with the filter bowl positioned above the sealing bowl. Pressing the pop-up device can switch the lifting and lowering states of the device. In the lowered state, the sealing bowl can block the drain hole; conversely, the sealing bowl disengages from the drain hole, thereby switching the water tank between draining and water storage states.
[0006] As a further explanation of the above solution, the bouncing device is connected to a pressure cap and a ring. The ring is connected between the pressure cap and the bouncing device. The side edge of the ring is provided with a groove. The sealing bowl is annular, and its inner edge is embedded in the groove, so that the sealing bowl can be integrated with the bouncing device.
[0007] Furthermore, the bottom of the pressure cap is provided with a shaft, which is threadedly connected to the ring. The filter bowl is sleeved outside the shaft and clamped between the pressure cap and the ring.
[0008] Furthermore, an annular baffle is installed inside the main body of the drain assembly, which divides the main body of the drain assembly into an upper cavity and a lower cavity. The bottom of the outer cup is tightly attached to the annular baffle, and the overflow pipe connector and the sewage pipe connector are respectively connected to the lower cavity.
[0009] Furthermore, a central pipe is provided in the middle of the lower cavity. This central pipe extends downward from the central hole of the annular partition. The outlet of the central pipe is lower than the outlet of the overflow pipe joint and the inlet of the sewage pipe joint. For the overflow pipe, this prevents backflow; for the sewage pipe joint, it can form a siphon effect, thereby enhancing the sewage discharge capacity and improving the drainage efficiency of the drain. It can also form a water trap, which has a certain odor-proof function.
[0010] Furthermore, the fixing position at the bottom of the outer bowl corresponding to the bouncing device adopts the form of a ring sleeve, and the bouncing device is threadedly connected to the ring sleeve; this connection method makes the installation and disassembly of the bouncing device more convenient, and facilitates later maintenance and replacement; at the same time, the drain hole is located on the outside of the ring sleeve, ensuring smooth drainage.
[0011] Furthermore, a bottom cover is threadedly connected to the lower part of the lower cavity, and there is a certain gap between the water outlet of the central tube and the bottom cover. This design allows the water in the tank to enter the lower cavity more smoothly, avoiding the problem of water flow blockage.
[0012] Furthermore, the inner wall of the outer bowl is provided with upper and lower steps, and the filter bowl is divided into an upper filter bowl and a lower filter bowl. The upper filter bowl is provided with a flange one to support the upper step, and the lower filter bowl is provided with a flange two to support the lower step. This layered arrangement can filter kitchen waste more effectively, improve the filtration effect, and also facilitate the installation and disassembly of the filter bowl.
[0013] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:
[0014] This utility model adopts an integrated sink drain structure mainly composed of a drain body, an outer bowl, a sealing bowl, a filter bowl, and a spring-loaded device. The outer bowl is set inside the drain body, and its bottom has a drain hole and a fixing position corresponding to the spring-loaded device. The filter bowl and the sealing bowl are respectively installed on the spring-loaded device, with the filter bowl positioned above the sealing bowl. Pressing the spring-loaded device can switch its lifting and lowering states. In the lowered state, the sealing bowl can block the drain hole; conversely, the sealing bowl disengages from the drain hole, thereby switching the sink between drainage and water storage states. The side of the drain body is equipped with an overflow pipe connector and a sewage pipe connector, which are integral with the drain body. They can be directly connected to a sewage hose to guide sewage to the building's sewage pipe system without the need for a separate sewage pipe assembly, greatly reducing production costs, simplifying the installation structure, and making maintenance more convenient. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the position and structure of the central tube of this utility model.
[0017] Figure 3 This is a schematic diagram of the installation structure of the bouncing device.
[0018] Figure 4 This is a schematic diagram of the position and structure of the annular partition.
[0019] Figure 5 This is a schematic diagram of the filter bowl installation structure.
[0020] Figure 6 This is a schematic diagram of the sealing bowl installation structure.
[0021] Explanation of reference numerals in the attached drawings: 1. Main body of the drain assembly; 2. Outer bowl; 3. Sealing bowl; 4. Filter bowl; 5. Bounce device; 6. Overflow pipe connector; 7. Sewage pipe connector; 8. Drain hole; 9. Ring sleeve; 10. Pressure cap; 11. Ring; 12. Embedded groove; 13. Shaft; 14. Annular partition; 15. Upper cavity; 16. Lower cavity; 17. Central tube; 18. Bottom cover; 19. Upper step; 20. Lower step. Detailed Implementation
[0022] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.
[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of 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.
[0025] In this utility model, unless otherwise 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," "below," and "over" the second feature includes the first feature being 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. "Above," "below," and "under" the second feature includes the first feature being 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.
[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0027] like Figures 1-6 As shown, this utility model is an integrated sink drain assembly, structurally comprising a drain assembly body 1, an outer bowl 2, a sealing bowl 3, a filter bowl 4, and a spring-loaded device 5. The outer bowl 2 has a flanged edge and is housed within the drain assembly body 1. An external thread is provided on the upper part of the outer bowl 2, allowing for a threaded connection with the drain assembly body 1. This design locks the drain assembly body 1 and the outer bowl 2 in their designated drain installation positions within the sink. An overflow pipe connector 6 and a sewage pipe connector 7 are located on the side of the drain assembly body 1. These connectors are integral with the drain assembly body 1. The sewage pipe connector 7 can be directly connected to a sewage hose, directing wastewater to the building's sewage system without the need for a separate sewage pipe assembly, significantly reducing production costs and simplifying the installation structure. The bottom of the outer bowl part 2 is provided with a drain hole 8 and a fixing position corresponding to the bouncing device 5. The fixing position adopts the form of a ring 9. The bouncing device 5 is threadedly connected to the ring 9, and the drain hole 8 is located on the outside of the ring 9.
[0028] The spring-loaded device 5 is connected to a pressure cap 10 and a ring 11. The ring 11 is connected between the pressure cap 10 and the spring-loaded device 5. The side edge of the ring 11 is provided with a groove 12. The sealing bowl 3 is annular, and its inner edge is embedded in the groove 12, so that the sealing bowl 3 can be integrated with the spring-loaded device 5. The bottom of the pressure cap 10 is provided with a shaft 13, which is threadedly connected to the ring 11. The filter bowl 4 is sleeved on the shaft 13 and clamped between the pressure cap 10 and the ring 11.
[0029] An annular baffle 14 is installed inside the main body 1 of the drain assembly, dividing the main body 1 into an upper cavity 15 and a lower cavity 16. The bottom of the outer cup 2 is tightly attached to the annular baffle 14. The overflow pipe connector 6 and the sewage pipe connector 7 are respectively connected to the lower cavity 16. A central pipe 17 is provided in the middle of the lower cavity 16. The central pipe 17 extends downward from the central hole of the annular baffle 14, and the outlet of the central pipe 17 is lower than the outlet of the overflow pipe connector 6 and the inlet of the sewage pipe connector 7. A bottom cover 18 is threadedly connected to the lower part of the lower cavity 16, and there is a certain gap between the outlet of the central pipe 17 and the bottom cover 18.
[0030] The inner wall of the outer bowl 2 is provided with upper and lower steps 19 and 20. The filter bowl is divided into an upper filter bowl and a lower filter bowl. The upper filter bowl is provided with a flange 1 supported on the upper step 19, and the lower filter bowl is provided with a flange 2 supported on the lower step 20.
[0031] In use, when water needs to be stored, press the spring-loaded device 5 to lower it. At this time, the sealing bowl 3 blocks the drain hole 8, preventing water from draining from the tank. When drainage is needed, press the spring-loaded device 5 again to raise it. The sealing bowl 3 disengages from the drain hole 8, and water enters the lower cavity 16 through the drain hole 8 and is discharged through the drain pipe connector 7. The filter bowl structure effectively filters kitchen waste, and the layered arrangement of the upper and lower filter bowls improves the filtration effect. The overflow pipe connector can be connected to an overflow pipe to prevent water from overflowing from the tank. The central pipe design creates a siphon effect, enhancing drainage capacity. The bottom cover facilitates maintenance and cleaning of the lower cavity.
[0032] Compared with the prior art, this utility model adopts an integrated structure of overflow pipe connector and sewage pipe connector with the main body of the drainer. It can directly connect to the sewage hose to lead sewage to the building's sewage pipe system without the need for additional sewage pipe components, which greatly reduces production costs, simplifies the installation structure, and makes maintenance more convenient.
[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.
Claims
1. An integrated sink drain assembly, characterized in that, It includes a drain body, an outer bowl, a sealing bowl, a filter bowl, and a spring-loaded device. The outer bowl is located inside the drain body. An overflow pipe connector and a drain pipe connector are provided on the side of the drain body. The overflow pipe connector and the drain pipe connector are integral with the drain body. The bottom of the outer bowl is provided with a drain hole and a fixing position corresponding to the spring-loaded device. The filter bowl and the sealing bowl are respectively installed on the spring-loaded device. The filter bowl is positioned above the sealing bowl. Pressing the spring-loaded device can switch the lifting and lowering states of the device. In the lowered state, the sealing bowl can block the drain hole; conversely, the sealing bowl is disengaged from the drain hole position.
2. The integrated sink drain assembly according to claim 1, characterized in that, The bouncing device is connected to a pressure cap and a ring. The ring is connected between the pressure cap and the bouncing device. The side edge of the ring is provided with a groove. The sealing bowl is annular, and its inner edge is embedded in the groove, so that the sealing bowl can be integrated with the bouncing device.
3. The integrated sink drain assembly according to claim 2, characterized in that, The bottom of the pressure cap is provided with a shaft, which is threadedly connected to the ring. The filter cup is sleeved outside the shaft and clamped between the pressure cap and the ring.
4. The integrated sink drain assembly according to claim 1, characterized in that, The main body of the drain is equipped with an annular partition, which divides the main body of the drain into an upper cavity and a lower cavity. The bottom of the outer cup is in close contact with the annular partition, and the overflow pipe connector and the sewage pipe connector are respectively connected to the lower cavity.
5. The integrated sink drain assembly according to claim 4, characterized in that, A central tube is provided in the middle of the lower cavity. The central tube extends downward from the central hole of the annular partition. The outlet of the central tube is lower than the outlet of the overflow pipe joint and the inlet of the sewage pipe joint.
6. The integrated sink drain assembly according to claim 1, characterized in that, The fixing position at the bottom of the outer bowl, corresponding to the bouncing device, is in the form of a ring. The bouncing device is threadedly connected to the ring, and the drain hole is located on the outside of the ring.
7. The integrated sink drain assembly according to claim 1, characterized in that, A bottom cover is threadedly connected to the lower part of the lower cavity, and there is a certain gap between the outlet of the central tube and the bottom cover.
8. The integrated sink drain assembly according to claim 1, characterized in that, The inner wall of the outer bowl is provided with upper and lower steps. The filter bowl is divided into an upper filter bowl and a lower filter bowl. The upper filter bowl is provided with a flange one that supports the upper step, and the lower filter bowl is provided with a flange two that supports the lower step.