A new type of drain that prevents clogging of the drain
By installing a drain pipe and a guide impeller at the bottom of the drain body, the guide impeller rotates under the flushing of water, guiding the water flow to form a vortex flow, which solves the problem of drain blockage and achieves the effects of rapid drainage and odor prevention.
Patent Information
- Application Number
- CN202521580106.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-12
- Estimated Expiration
- 2035-07-25
Smart Images

Figure CN224351344U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of drainers, and in particular to a novel drainer that can prevent pipe blockage. Background Technology
[0002] A drain is a drainage device installed in places such as bathtubs, washbasins, sinks, and sewers. It is a key device for opening or closing water channels and is widely used in production and daily life. Because water often contains impurities that can easily clog water channels and are difficult to clean, it is necessary to provide a drain that can prevent blockages while minimizing the impact on drainage speed.
[0003] Kitchen sink basins typically have drain holes at the bottom for drainage. A drainage device (drain assembly) is installed on these holes and connected to a drain pipe, through which wastewater from the sink is directed into the sewer. To prevent large particles from entering the sewer and causing blockages, and to control the amount of water drained from the basin, a strainer is usually installed on the drain assembly. For example, patent number 201410232130.8, entitled "A Multifunctional Washbasin," clearly shows the structure of the strainer, which includes its body and several circular filter holes. During use, wastewater flows into the sewer through these filter holes, while larger impurities are filtered out.
[0004] However, during long-term research and use, the applicant discovered that while this type of strainer cup can provide some filtration, its structure results in excessively slow drainage. Furthermore, because water often contains fine impurities that the strainer cup cannot filter, these impurities tend to accumulate at the drain outlet over time, easily clogging the waterway. Users typically need to wait a considerable amount of time to completely drain the wastewater from the sink. Another reason is that the strainer cup's filter holes cause water flow flocculation, preventing the generation of vortices during drainage and thus slowing down the process. Therefore, it is necessary to further improve the existing drain structure to increase the drainage speed. Utility Model Content
[0005] The purpose of this invention is to provide a new type of drainer that has a fast drainage speed and can prevent pipe blockage.
[0006] The purpose of this utility model is achieved as follows:
[0007] A novel drain assembly designed to prevent pipe blockage includes a drain assembly body, a sealing cap, a filter basket, a locking ring, a drain pipe, and a guide impeller. The locking ring is threaded to the outer wall of the drain assembly body. The sealing cap covers the top opening of the drain assembly body. The filter basket is detachably installed inside the drain assembly body. The drain pipe is located at the bottom of the drain assembly body, with its upper end connected to the drain assembly body. The guide impeller is rotatably mounted inside the drain pipe, with the axis of rotation as its pivot. This invention utilizes the drain pipe and guide impeller at the bottom of the drain assembly body. The guide impeller rotates under the scouring of water flow, guiding the water flow downwards in a vortex. Impurities on the top of the drain pipe and on the guide impeller are dislodged by the rotating impeller and carried away by the vortex water flow. Therefore, this drain assembly is less prone to blockage, drains more smoothly, and drains faster.
[0008] The present invention can be further improved in the following ways.
[0009] The bottom of the drain assembly body is equipped with a positioning protrusion ring, and the drain pipe is located inside the positioning protrusion ring. The outer wall of the drain pipe is equipped with an upper positioning protrusion ring and a lower positioning protrusion ring. The upper positioning protrusion ring is located above the lower positioning protrusion ring, and the lower positioning protrusion ring abuts against the inner wall of the positioning protrusion ring. The upper end of the drain pipe is equipped with a positioning flange, which sits on the upper end of the positioning protrusion ring. The upper positioning protrusion ring abuts against the inner wall of the positioning protrusion ring, thereby making the drain pipe more secure and less prone to shaking due to water flow impact.
[0010] This utility model also includes a water-sealing cup, which is fixedly connected to the bottom of the drain body. The drain pipe is located inside the water-sealing cup, and the lower end of the drain pipe is connected to the water-sealing cup. A drain pipe is provided on the side wall of the water-sealing cup, and the upper end of the drain pipe is connected to the water-sealing cup. The water in the water-sealing cup of this utility model can seal the lower end of the drain pipe, thereby preventing odors from the drain pipe from escaping into the sink.
[0011] The blades of the guide impeller are located at the upper end of the drain pipe. The structure of this utility model is reasonable. When the water flows into the drain pipe, it first passes through the rotating guide of the blades to form a vortex flow, resulting in faster drainage.
[0012] The bottom of the drain assembly body is equipped with a connecting protrusion, the positioning protrusion is located inside the connecting protrusion, and the top of the sealing cup is connected to the connecting protrusion.
[0013] The positioning convex ring contains an impeller support seat, and the impeller support seat has a shaft hole. The shaft of the guide impeller is rotatably mounted on the shaft hole. The structure of this utility model is reasonable, and the impeller rotates stably on the impeller support seat.
[0014] At least two connecting arms are provided in an annular interval between the outer wall of the impeller support and the inner wall of the positioning convex ring. The space between two adjacent connecting arms is a drainage hole. The two ends of the connecting arms are connected to the outer wall of the impeller support and the inner wall of the positioning convex ring, respectively. After the water flows through the rotating guide of the blades, it flows down from the drainage port.
[0015] The impeller support base and the positioning cam are integrally formed.
[0016] The lower end of the guide impeller shaft is provided with an anti-detachment protrusion. The diameter of the anti-detachment protrusion is larger than the diameter of the shaft hole, which effectively prevents the guide impeller from detaching from the impeller support seat and falling out of the impeller support seat, thus ensuring that the guide impeller is securely fixed.
[0017] The beneficial effects of this utility model are as follows:
[0018] This invention features a drain pipe and a guide impeller at the bottom of the drain body. The guide impeller rotates under the scouring of water flow, guiding the water flow downwards in a vortex. Impurities on the top of the drain pipe and on the guide impeller are dislodged by the rotation of the guide impeller and carried away by the vortex water flow. Therefore, this drain is less prone to clogging, drains more smoothly, and drains faster. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of a novel drainer that can prevent pipe blockage, according to Embodiment 1 of this utility model.
[0020] Figure 2 This is a top view of a novel drain device that can prevent pipe blockage, according to Embodiment 1 of this utility model.
[0021] Figure 3 yes Figure 2 Sectional view at point AA.
[0022] Figure 4 This is a schematic diagram of the structure of a novel drainer that can prevent pipe blockage, omitting the sealing cap, according to Embodiment 1 of this utility model.
[0023] Figure 5 This is a schematic diagram of the structure of the novel drainer that can prevent pipe blockage, omitting the water-sealing cover, from another angle, according to Embodiment 1 of this utility model.
[0024] Figure 6 This is an exploded view of a novel drain device that can prevent pipe blockage, according to Embodiment 1 of this utility model.
[0025] Figure 7 This is a structural schematic diagram of the drain pipe and guide impeller of this utility model.
[0026] Figure 8 yes Figure 7 Top view.
[0027] Figure 9 yes Figure 8 Sectional view at point BB.
[0028] Figure 10 This is an exploded view of the drain pipe and guide impeller of this utility model. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0030] Example 1, as Figures 1 to 10 As shown, a new type of drainer that can prevent pipe blockage includes a drainer body 1, a water sealing cover 4, a water distribution plate 5, a water filter basket 3, a locking ring 2, a locking ring 9, a drain pipe 8, and a guide impeller 7. The locking ring 2 is threaded to the outer wall of the drainer body 1. The water sealing cover 4 is placed over the top opening of the drainer body 1. The water filter basket 3 is detachably placed inside the drainer body 1. The water distribution plate 5 is placed over the opening of the water filter basket 3. The water distribution plate 5 is provided with a water distribution port 51. The drain pipe 8 is located at the bottom of the drainer body 1. The upper end of the drain pipe 8 is connected to the drainer body 1. The guide impeller 7 is rotatably arranged inside the drain pipe 8 with the axis of the drain pipe 8 as the pivot 72. This invention features a drain pipe and a guide impeller at the bottom of the drain body. The guide impeller rotates under the scouring of water flow, guiding the water flow downwards in a vortex. Impurities on the top of the drain pipe and on the guide impeller are dislodged by the rotation of the guide impeller and carried away by the vortex water flow. Therefore, this drain is less prone to clogging, drains more smoothly, and drains faster.
[0031] This is a more specific technical solution of the present invention.
[0032] The bottom of the drain body 1 is provided with a positioning protrusion 11, and the drain pipe 8 is located inside the positioning protrusion 11. The outer wall of the drain pipe 8 is provided with an upper positioning protrusion 84 and a lower positioning protrusion 85. The upper positioning protrusion 84 is located above the lower positioning protrusion 85, and the lower positioning protrusion 85 abuts against the inner wall of the positioning protrusion 11. The upper end of the drain pipe 8 is provided with a positioning flange 83, which sits on the upper end of the positioning protrusion 11. The upper positioning protrusion 84 abuts against the inner wall of the positioning protrusion 11, thereby making the drain pipe 8 more secure and less prone to shaking due to water flow impact.
[0033] This utility model also includes a water-sealing cup 6, which is fixedly connected to the bottom of the drain body 1. A drain pipe 8 is located inside the water-sealing cup 6, with its lower end connected to the water-sealing cup 6. A drain pipe 61 is provided on the side wall of the water-sealing cup 6, with its upper end connected to the water-sealing cup. When the water level in the water-sealing cup 6 exceeds the height of the lower end of the drain pipe 8, the water seals the lower end of the drain pipe 8, thus preventing odors from the sewer from escaping into the sink. When the water level in the water-sealing cup 6 exceeds the upper end of the drain pipe 61, the water in the water-sealing cup 6 will drain away through the drain pipe.
[0034] The blades 71 of the guide impeller 7 are located at the upper end of the drain pipe 8. The structure of this utility model is reasonable. When the water flows into the drain pipe 8, it first passes through the rotating guide of the blades 71 to form a vortex flow, which makes the drainage speed faster.
[0035] The bottom of the drain body 1 is provided with a connecting protrusion 12, the positioning protrusion 11 is located inside the connecting protrusion 12, and the top of the sealing cup 6 is connected to the connecting protrusion 12.
[0036] The top of the sealing cup 6 is connected to the connecting protrusion 12 via the locking ring 9.
[0037] The positioning ring 11 is provided with an impeller support seat 81, and the impeller support seat 81 is provided with a shaft hole 86. The rotating shaft 72 of the guide impeller 7 is rotatably located on the shaft hole 86. The structure design of this utility model is reasonable, and the impeller rotates stably on the impeller support seat 81.
[0038] At least two connecting arms 82 are provided annularly between the outer wall of the impeller support 81 and the inner wall of the positioning protrusion 11. The space between two adjacent connecting arms 82 is a drain hole 87. The two ends of the connecting arms 82 are connected to the outer wall of the impeller support 81 and the inner wall of the positioning protrusion 11, respectively. After the water flows through the rotating guide of the blade 71, it flows down from the drain hole.
[0039] The impeller support seat 81 and the positioning convex ring 11 are integrally formed.
[0040] The lower end of the shaft 72 of the guide impeller 7 is provided with an anti-detachment protrusion 73. The diameter of the anti-detachment protrusion 73 is larger than the diameter of the shaft hole 86, which effectively prevents the guide impeller 7 from detaching from the impeller support seat 81 and falling out of the impeller support seat 81, and the guide impeller 7 is securely fixed.
[0041] The working principle of this utility model is as follows:
[0042] When this utility model is in operation, it is installed at the bottom of the water tank. After the water seal is removed by the user, the water in the tank is diverted by the water distribution plate and flows down to the filter basket. The filter basket filters out the residue in the water and then flows down again. The water flow washes over the guide impeller, which rotates automatically under the scouring of the water flow. The guide impeller guides the water flow in a vortex shape and flows down from the drain hole 87. Impurities on the top of the drain pipe and on the guide impeller are dropped off by the rotation of the guide impeller and carried away by the vortex water flow. Therefore, the drainage of this utility model is smoother and faster.
Claims
1. A novel drain assembly capable of preventing pipe blockage, comprising a drain assembly body (1), a water-sealing cover (4), a water-filtering basket (3), and a locking ring (2), wherein the locking ring (2) is threadedly connected to the outer wall of the drain assembly body (1), the water-sealing cover (4) is disposed over the top opening of the drain assembly body (1), and the water-filtering basket (3) is detachably disposed inside the drain assembly body (1), characterized in that, It also includes a drain pipe (8) and a guide impeller (7). The drain pipe (8) is located at the bottom of the drain body (1). The upper end of the drain pipe (8) is connected to the drain body (1). The guide impeller (7) is rotatably installed inside the drain pipe (8) with the axis of the drain pipe (8) as the pivot.
2. The novel drain cleaner that prevents pipe blockage according to claim 1, characterized in that, The bottom of the drain body (1) is provided with a positioning protrusion (11), the drain pipe (8) is located inside the positioning protrusion (11), the outer side wall of the drain pipe (8) is provided with an upper positioning protrusion (84) and a lower positioning protrusion (85), the upper positioning protrusion (84) is located above the lower positioning protrusion (85), the lower positioning protrusion (85) abuts against the inner side wall of the positioning protrusion (11), the upper end of the drain pipe (8) is provided with a positioning flange (83), the positioning flange (83) sits on the upper end of the positioning protrusion (11), and the upper positioning protrusion (84) abuts against the inner side wall of the positioning protrusion (11).
3. The novel drain cleaner that prevents pipe blockage according to claim 2, characterized in that, It also includes a water seal cup (6), which is fixedly connected to the bottom of the drain body (1). The drain pipe (8) is located inside the water seal cup (6), and the lower end of the drain pipe (8) is connected to the water seal cup (6). A drain pipe (61) is provided on the side wall of the water seal cup (6), and the upper end of the drain pipe (61) is connected to the water seal cup.
4. The novel drain cleaner that prevents pipe blockage according to claim 1, characterized in that, The blades (71) of the guide impeller (7) are located at the upper end of the drain pipe (8).
5. The novel drain cleaner that prevents pipe blockage according to claim 2, characterized in that, The bottom of the drain body (1) is provided with a connecting protrusion (12), the positioning protrusion (11) is located inside the connecting protrusion (12), and the top of the sealing cup (6) is connected to the connecting protrusion (12).
6. The novel drain cleaner that prevents pipe blockage according to claim 2, characterized in that, The positioning ring (11) is provided with an impeller support seat (81), and the impeller support seat (81) is provided with a shaft hole (86). The shaft (72) of the guide impeller (7) is rotatably located on the shaft hole (86).
7. The novel drain cleaner according to claim 6, characterized in that, At least two connecting arms (82) are provided annularly between the outer wall of the impeller support (81) and the inner wall of the positioning convex ring (11). The space between two adjacent connecting arms (82) is a drainage hole (87). The two ends of the connecting arms (82) are connected to the outer wall of the impeller support (81) and the inner wall of the positioning convex ring (11), respectively.
8. The novel drain cleaner according to claim 6, characterized in that, The impeller support (81) and the positioning cam (11) are integrally formed.
9. The novel drain cleaner according to claim 1, characterized in that, The lower end of the shaft (72) of the guide impeller (7) is provided with an anti-detachment protrusion (73), the diameter of which is larger than the diameter of the shaft hole (86).
Citation Information
Patent Citations
Multifunctional washtub
CN103981930A