Backflow-preventing drainage device of dish-washing machine
By setting a vertical second drain pipe and a one-way valve ball structure in the dishwasher, the opening and closing of the drain hole is controlled by water pressure and gravity, which solves the backflow problem caused by the easy failure of traditional silicone valve plates, and achieves better sealing effect and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-27
AI Technical Summary
In traditional dishwasher drainage systems, the one-way silicone valve is prone to failure, leading to backflow of water in the drain pipe and making it impossible to effectively block the flow.
A one-way valve ball is vertically installed in the second drainage pipeline. The drainage water pressure lifts the valve ball to open the drainage hole. When drainage stops, the valve ball falls back under gravity to block the hole. Combined with the inverted V-shaped support, the sealing effect is improved.
It effectively prevents water backflow in drainage pipes, extends service life, improves sealing effect, and avoids the elastic failure problem of traditional silicone valve plates.
Smart Images
Figure CN224039159U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a dish-washing machine technical field, especially a dish-washing machine's anti-backflow drainage device. BACKGROUND
[0002] The conventional dish-washing machine drainage device, generally, sets up the elastic one-way silica gel valve piece vertically on the horizontal drainage pipeline, when draining, the drainage water pressure opens the one-way silica gel valve piece to open the drainage pipeline, when stopping draining, the one-way silica gel valve piece resets to block the drainage pipeline, so that the water on the drainage pipeline can be prevented from backflowing, but the elasticity of the one-way silica gel valve piece is easy to fail after long time use, which leads to the failure of blocking the drainage pipeline, and the water on the drainage pipeline may backflow.
[0003] Therefore, it is necessary to make further improvement. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing a dish-washing machine's anti-backflow drainage device with simple structure, good blocking effect, effective prevention of backflow, long service life and strong practicality to overcome the shortcomings of the prior art.
[0005] A dish-washing machine's anti-backflow drainage device designed for this purpose, the dish-washing machine comprises an inner container, characterized in that: the anti-backflow drainage device comprises a first drainage pipeline, a second drainage pipeline and a water outlet, the first drainage pipeline is connected to the inner container at the first end and connected to the first end of the second drainage pipeline at the last end, the last end of the second drainage pipeline is communicated with the water outlet, the second drainage pipeline is vertically arranged above the first drainage pipeline, and a one-way valve ball is arranged inside the second drainage pipeline; when the anti-backflow drainage device drains, the drainage water pressure lifts the one-way valve ball to open the second drainage pipeline, and when the anti-backflow drainage device stops draining, the one-way valve ball falls downward under the action of gravity to block the second drainage pipeline.
[0006] The second drainage pipeline is provided with a drainage hole inside; the drainage hole is opened when the one-way valve ball is lifted by the drainage water pressure, thereby opening the second drainage pipeline; the drainage hole is closed when the one-way valve ball falls downward under the action of gravity, thereby blocking the second drainage pipeline.
[0007] The second drainage pipeline is provided with a supporting part inside, and the drainage hole is arranged on the supporting part, and the one-way valve ball is supported on the supporting part when it falls downward under the action of gravity.
[0008] The cross-sectional shape of the supporting part is inverted V-shaped.
[0009] The supporting part is located at the lower part of the second drainage pipeline.
[0010] The first drainage pipeline is horizontally arranged.
[0011] The first end of the first drainage pipeline is provided with a drainage pump, the water inlet end of the drainage pump is communicated with the inner container, and the water outlet end of the drainage pump is communicated with the first drainage pipeline.
[0012] The bottom of the inner container is provided with a water collecting cup communicated with the inner container, the side of the water collecting cup is provided with a drainage port, and the first end of the first drainage pipeline is connected with the drainage port.
[0013] The anti-backflow drainage device further comprises a water drainer and a drainage pipe, the water outlet is arranged at the bottom of the water drainer, the water outlet is connected with the drainage pipe, and the second drainage pipeline, the water drainer and the drainage pipe are sequentially communicated.
[0014] The water drainer is provided with a first drainage channel, a second drainage channel and a third drainage channel which are sequentially communicated, the second drainage pipeline is communicated with the first drainage channel, the third drainage channel is communicated with the drainage pipe, the first drainage channel is horizontally arranged above the second drainage pipeline, the second drainage channel is vertically arranged above the first drainage channel, and the third drainage channel is arranged below the second drainage channel.
[0015] The anti-backflow drainage device of the utility model sets the second drainage pipeline vertically above the first drainage pipeline, sets a one-way valve ball in the second drainage pipeline, and lifts the one-way valve ball by water pressure during drainage to open the second drainage pipeline, and the one-way valve ball falls downward under the action of gravity to block the second drainage pipeline when stopping drainage, so that the structure blocks the drainage pipeline by the gravity of the one-way valve ball, has good blocking effect, avoids the elastic failure problem of a traditional one-way silica gel valve piece, and effectively prevents the backflow of water in the drainage pipeline. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figures 1-4 It is a sectional view of the dish washing machine in different directions in an embodiment of the utility model.
[0017] Figure 5 It is a partial structure schematic view of the dish washing machine in another direction in an embodiment of the utility model.
[0018] Figure 6 It is a partial structure schematic view of the dish washing machine in another direction in an embodiment of the utility model.
[0019] Figure 7 It is an exploded structure schematic view of the water collecting cup and the one-way valve ball in an embodiment of the utility model.
[0020] Figure 8 It is Figure 3 It is an enlarged structure schematic view of position A.
[0021] Figure 9 It is Figure 7 It is an enlarged structure schematic view of position B.
[0022] Figure 10The utility model discloses a whole structure schematic drawing of dish washer in one embodiment. DETAILED DESCRIPTION
[0023] The utility model will be described further below in combination with the drawings and embodiments.
[0024] Referring to Figures 1-10 , the anti-backflow drainage device of the dish washer comprises a first drainage pipeline 2, a second drainage pipeline 3 and a water outlet 18, the first end of the first drainage pipeline 2 is connected to the inner container 1, the tail end is connected to the first end of the second drainage pipeline 3, the tail end of the second drainage pipeline 3 is communicated with the water outlet 18, the second drainage pipeline 3 is vertically arranged above the first drainage pipeline 2, and a one-way valve ball 5 is arranged inside the second drainage pipeline 3; when the anti-backflow drainage device drains, the drainage water pressure lifts the one-way valve ball 5 to open the second drainage pipeline 3, and when the anti-backflow drainage device stops draining, the one-way valve ball 5 falls downward under the action of gravity to block the second drainage pipeline 3, thereby realizing anti-backflow.
[0025] The second drainage pipeline 3 is internally provided with a drainage through hole 6; the drainage through hole 6 is opened when the one-way valve ball 5 is lifted by the drainage water pressure, thereby opening the second drainage pipeline 3; the drainage through hole 6 is closed when the one-way valve ball 5 falls downward under the action of gravity, thereby blocking the second drainage pipeline 3; after stopping draining, if there is still water in the second drainage pipeline 3, the water will press the one-way valve ball 5 downward, thereby improving the blocking effect of the one-way valve ball 5.
[0026] The second drainage pipeline 3 is internally provided with a supporting portion 7, the drainage through hole 6 is arranged on the supporting portion 7, and the one-way valve ball 5 is supported on the supporting portion 7 when falling downward under the action of gravity, thereby closing the drainage through hole 6.
[0027] The cross-sectional shape of the supporting portion 7 is inverted eight characters, which can improve the supporting effect on the one-way valve ball 5.
[0028] The supporting portion 7 is located at the lower part of the second drainage pipeline 3, so that the one-way valve ball 5 has enough space to move upward.
[0029] The first drainage pipeline 2 is horizontally and transversely arranged, and the first drainage pipeline 2 and the second drainage pipeline 3 are perpendicular to each other.
[0030] The first end of the first drainage pipeline 2 is provided with a drainage pump 8, the water inlet end of the drainage pump 8 is communicated with the inner container 1, and the water outlet end of the drainage pump 8 is communicated with the first drainage pipeline 2; when the drainage pump 8 works, the water in the inner container 1 sequentially passes through a water collecting cup 9, a drainage opening 10, the first drainage pipeline 2, the second drainage pipeline 3, a first drainage channel 12, a second drainage channel 13, a third drainage channel 14 and a drainage pipe 11 and is discharged out of the dish washer.
[0031] The inner container 1 is provided with a water collecting cup 9 at the bottom, the side of the water collecting cup 9 is provided with a drain port 10, the drain port 10 is communicated with the water collecting cup 9, the first drain pipeline 2 is connected with the drain port 10, the drain pump 8 is arranged on the drain port 10, and the first drain pipeline 2 and the second drain pipeline 3 are integrally arranged on the water collecting cup 9.
[0032] The anti-backflow drain device further comprises a drain 4 and a drain pipe 11, the water outlet 18 is arranged at the bottom of the drain 4, the water outlet 18 is connected with the drain pipe 11, the second drain pipeline 3, the drain 4 and the drain pipe 11 are sequentially communicated.
[0033] The drain 4 is provided with a first drain channel 12, a second drain channel 13 and a third drain channel 14 which are sequentially communicated, the second drain pipeline 3 is communicated with the first drain channel 12, the third drain channel 14 is communicated with the drain pipe 11, the first drain channel 12 is horizontally arranged above the second drain pipeline 3, the second drain channel 13 is vertically arranged above the first drain channel 12, the second drain channel 13 is arranged in a meandering manner, and the third drain channel 14 is arranged below the second drain channel 13, so that the water is drained from the bottom to the upper part and then back to the bottom.
[0034] The drain 4 comprises a softener 15 and a breather 16 which are integrally arranged, the breather 16 is arranged above the softener 15, the inner container 1 is provided with a base 17 at the bottom, the softener 15 is arranged in the base 17, the breather 16 is arranged at one side of the inner container 1, the first drain channel 12 is formed between the softener 15 and the base 17, the second drain channel 13 is arranged in the breather 16, the third drain channel 14 is arranged in the softener 15, and the drain pipe 11 is arranged at the bottom of the softener 15.
[0035] The above is the preferred scheme of the utility model, the basic principle, the main features and the advantages of the utility model are displayed and described, the skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the specification are only to illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. Anti-backflow drain device for a dishwasher, the dishwasher comprising a tub (1), characterized in that: The anti-backflow drainage device comprises a first drainage pipeline (2), a second drainage pipeline (3) and a water outlet (18), the first drainage pipeline (2) is connected with an inner container (1) at a first end and connected with the second drainage pipeline (3) at a second end, the second drainage pipeline (3) is connected with the water outlet (18) at a third end, the second drainage pipeline (3) is vertically arranged above the first drainage pipeline (2), and a one-way valve ball (5) is arranged in the second drainage pipeline (3); when the anti-backflow drainage device is draining, the water pressure of the drainage water lifts the one-way valve ball (5) to open the second drainage pipeline (3), and when the anti-backflow drainage device stops draining, the one-way valve ball (5) falls downward under the action of gravity to block the second drainage pipeline (3).
2. The backflow prevention drain device of the dish washer according to claim 1, characterized in that: The second drainage pipeline (3) is internally provided with a drainage through hole (6); the drainage through hole (6) is opened when the one-way valve ball (5) is lifted by the water pressure of the drainage water, so as to open the second drainage pipeline (3); the drainage through hole (6) is closed when the one-way valve ball (5) falls downward under the action of gravity, so as to block the second drainage pipeline (3).
3. The backflow prevention drain device of the dish washer according to claim 2, characterized in that: The second drainage pipeline (3) is internally provided with a supporting part (7), the drainage through hole (6) is arranged on the supporting part (7), and the one-way valve ball (5) is supported on the supporting part (7) when falling downward under the action of gravity.
4. The backflow prevention drain device of the dish washer according to claim 3, characterized in that: The cross-sectional shape of the supporting part (7) is inverted V-shaped.
5. The backflow prevention drain device of the dish washer according to claim 3, wherein: The supporting part (7) is located at the lower part of the second drainage pipeline (3).
6. The backflow prevention drain device of the dish washer according to claim 1, wherein: The first drainage pipeline (2) is horizontally arranged.
7. The backflow prevention drain device of the dish washer according to claim 1, wherein: The first end of the first drainage pipeline (2) is provided with a drainage pump (8), the water inlet end of the drainage pump (8) is connected with the inner container (1), and the water outlet end of the drainage pump (8) is connected with the first drainage pipeline (2).
8. The backflow prevention drain device of the dish washer according to claim 7, wherein: The bottom of the inner container (1) is provided with a water collecting cup (9) connected with the inner container (1), the side of the water collecting cup (9) is provided with a drainage opening (10), and the first end of the first drainage pipeline (2) is connected with the drainage opening (10).
9. The backflow prevention drain device of the dish washer according to claim 1, wherein: The anti-backflow drainage device further comprises a drainage device (4) and a drainage pipe (11), the water outlet (18) is arranged at the bottom of the drainage device (4), the water outlet (18) is connected with the drainage pipe (11), and the second drainage pipeline (3), the drainage device (4) and the drainage pipe (11) are sequentially connected.
10. The backflow prevention drain device of the dish washer according to claim 9, wherein: The drainage device (4) is provided with a first drainage channel (12), a second drainage channel (13) and a third drainage channel (14) which are sequentially connected, the second drainage pipeline (3) is connected with the first drainage channel (12), the third drainage channel (14) is connected with the drainage pipe (11), the first drainage channel (12) is horizontally arranged above the second drainage pipeline (3), the second drainage channel (13) is vertically arranged above the first drainage channel (12), and the third drainage channel (14) is arranged below the second drainage channel (13).