Automatic drainage device for bathtub
By using a Z-shaped drain pipe and an expansion airbag system to control the water flow rate in the bathtub, the problem of debris accumulation and blockage in traditional bathtub drainage methods is solved, achieving the reliability and convenience of automatic drainage.
Patent Information
- Application Number
- CN202520324676.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Traditional bathtub drainage methods are prone to causing debris to accumulate and clog the drain pipe.
The Z-shaped drain pipe design, combined with an expansion airbag, rubber expansion sleeve and air pump system, controls the water flow speed inside the drain pipe. The expansion airbag and rubber expansion sleeve work together to compress the space in the drain pipe, preventing the water flow from being too fast and causing debris to accumulate.
It effectively reduces the risk of drain pipe blockage, prevents debris such as hair and dander from clogging the drain outlet, and improves the reliability and convenience of drainage.
Smart Images
Figure CN223937263U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bathtub technology, and in particular to an automatic draining device for bathtubs. Background Technology
[0002] The demand for convenience and smart technology in home bathroom facilities is growing. As an important bathroom fixture, bathtubs suffer from many shortcomings due to traditional drainage methods. When the water flow rate inside the drain pipe is too fast, debris in the water will quickly accumulate at the drain outlet, causing blockage. Utility Model Content
[0003] The purpose of this invention is to provide an automatic bathtub drainage device to solve the technical problem of debris accumulation and blockage that is easily caused by traditional direct drainage methods.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] An automatic bathtub drainage device includes a bathtub body. A drain pipe is embedded at one end of the bathtub body. A connecting pipe is connected to the middle section of the drain pipe. A rubber expansion sleeve is fixedly connected to both the connecting pipe and the drain pipe. An expansion air bladder is provided between the rubber expansion sleeve and the connecting pipe. An air guide pipe is provided at the bottom of the expansion air bladder. An air pump is connected to one end of the air guide pipe. A piston cap is snapped into the upper end of the drain pipe. A connecting rod is fixedly connected to the bottom end of the piston cap. A limit block is fixedly connected to the bottom end of the connecting rod. A filter frame is provided inside the drain pipe. A connecting block is fixedly connected to the middle of the bottom end of the filter frame. A limit groove is opened at the middle of the top of the connecting block. A circular groove is opened inside the connecting block near the lower end of the limit groove.
[0006] As a preferred embodiment of this utility model, the drain pipe is arranged in a Z-shape.
[0007] As a preferred embodiment of this utility model, a limit ring is fixedly connected to the upper end of the inner wall of the drain pipe.
[0008] As a preferred embodiment of this utility model, the inner diameter of the limiting groove is adapted to the outer diameter of the limiting block.
[0009] As a preferred embodiment of this utility model, filter holes are provided on both the side wall and the bottom of the filter frame.
[0010] Compared with the prior art, the beneficial effects of the automatic bathtub drainage device provided by this utility model are as follows: when the air pump is activated, air is delivered into the air pipe. With the cooperation of the drain pipe, the expansion airbag, and the rubber expansion sleeve, the space inside the drain pipe can be squeezed smaller, which prevents the water flow rate inside the drain pipe from being too fast, causing debris to accumulate quickly and block the drain outlet, thus reducing the risk of blockage. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0013] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;
[0014] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;
[0015] Figure 4 for Figure 2 Enlarged structural diagram at point B;
[0016] Figure 5 This is a cross-sectional view of the filter frame in an embodiment of the present invention.
[0017] Reference numerals: bathtub body 1, drain pipe 11, connecting pipe 12, rubber expansion sleeve 13, expansion airbag 14, air guide pipe 15, air pump 16, limiting ring 17, piston cap 2, connecting rod 21, limiting block 22, filter frame 3, limiting groove 301, circular groove 302, connecting block 31. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
[0019] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention 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. Therefore, they should not be construed as limitations on the embodiments of the present invention.
[0020] In the description of the embodiments of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of this invention should be understood according to the specific circumstances. See also Figure 1-5 As shown in the figure, an automatic drain device for a bathtub according to an embodiment of the present invention includes a bathtub body 1. A drain pipe 11 is embedded in one end of the bathtub body 1. A connecting pipe 12 is connected to the middle section of the drain pipe 11. A rubber expansion sleeve 13 is fixedly connected to both the connecting pipe 12 and the drain pipe 11. An expansion air bladder 14 is provided between the rubber expansion sleeve 13 and the connecting pipe 12. An air guide pipe 15 is provided at the bottom end of the expansion air bladder 14. An air pump 16 is connected to one end of the air guide pipe 15. A piston cap 2 is snapped into the upper end of the drain pipe 11. A connecting rod 21 is fixedly connected to the bottom end of the piston cap 2. A limit block 22 is fixedly connected to the bottom end of the connecting rod 21. A filter frame 3 is provided in the drain pipe 11. A connecting block 31 is fixedly connected to the middle of the bottom end of the filter frame 3. A limit groove 301 is opened in the middle of the top end of the connecting block 31. A circular groove 302 is opened in the interior of the connecting block 31 near the lower end of the limit groove 301.
[0021] The drain pipe 11 is arranged in a Z-shape, which can slow down the water flow rate.
[0022] A limiting ring 17 is fixedly connected to the upper end of the inner wall of the drain pipe 11, and the filter frame 3 can be placed on the limiting ring 17.
[0023] The inner diameter of the limiting groove 301 is adapted to the outer diameter of the limiting block 22, and the limiting block 22 can pass through the limiting groove 301 and enter the circular groove 302.
[0024] The filter frame 3 has filter holes on its side walls and bottom, which can filter out impurities.
[0025] When using this embodiment of the utility model for drainage, the piston cap 2 is pulled out while rotating to match the limiting block 22 with the limiting groove 301. At this time, the piston cap 2 is pulled out and removed, and the water will flow out along the drain pipe 11. When the water flow rate is fast, the air pump 16 is started to supply air into the expansion airbag 14 through the air guide pipe 15 to make it expand. The expansion airbag 14 expands and drives the rubber expansion sleeve 13 to squeeze the inner end, thereby reducing the water flow inside the drain pipe 11 and preventing the water flow rate from being too fast, which would cause hair and dander to block the drain outlet and reduce the risk of blockage.
[0026] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.
Claims
1. An automatic drain device for a bathtub, comprising a bathtub body (1), characterized in that: A drain pipe (11) is embedded in one end of the bathtub body (1). A connecting pipe (12) is connected to the middle section of the drain pipe (11). A rubber expansion sleeve (13) is fixedly connected to both the connecting pipe (12) and the drain pipe (11). An expansion airbag (14) is provided between the rubber expansion sleeve (13) and the connecting pipe (12). An air guide pipe (15) is provided at the bottom end of the expansion airbag (14). An air pump (16) is connected to one end of the air guide pipe (15). The drain pipe (11) is connected to the drain pipe (12). 1) A piston cap (2) is snapped into the upper end of the inner part. A connecting rod (21) is fixedly connected to the bottom end of the piston cap (2). A limit block (22) is fixedly connected to the bottom end of the connecting rod (21). A filter frame (3) is provided inside the drain pipe (11). A connecting block (31) is fixedly connected to the middle of the bottom end of the filter frame (3). A limit groove (301) is opened in the middle of the top end of the connecting block (31). A circular groove (302) is opened inside the connecting block (31) near the lower end of the limit groove (301).
2. The automatic bathtub drainage device according to claim 1, characterized in that: The drain pipe (11) is arranged in a Z-shape.
3. The automatic bathtub drainage device according to claim 1, characterized in that: A limiting ring (17) is fixedly connected to the upper end of the inner side wall of the drain pipe (11).
4. The automatic bathtub drainage device according to claim 1, characterized in that: The inner diameter of the limiting groove (301) is adapted to the outer diameter of the limiting block (22).
5. The automatic bathtub drainage device according to claim 1, characterized in that: The filter frame (3) has filter holes on its side wall and bottom.