One-way non-return structure and dish washing machine

Abstract

The utility model relates to the technical field of check valves, in particular to a one-way check structure and a dish-washing machine, and aims to solve the problems that a rubber water retaining piece of an existing one-way check valve cannot reach a check position in time, so that part of sewage flows back to the one-way check valve from the water retaining piece and pollutes the dish-washing machine. In order to achieve the purpose, the utility model provides the one-way non-return structure which comprises a shell, a water baffle and a driving part, a water flow passage is arranged in the one-way non-return structure, and the water flow passage is provided with a water outlet and a water inlet; the water baffle is rotationally connected with the top end of the water outlet, the driving part is arranged between the shell and the water baffle, and when the water flow pressure borne by the water baffle is larger than first preset pressure, the water baffle is far away from the water outlet; and when the received water flow pressure is smaller than a second preset pressure, the water baffle is located at the non-return position under the action of the driving force of the driving part and the gravity of the water baffle, so that the water baffle can quickly rotate to the non-return position under the dual action of the driving force of the driving part and the gravity of the water baffle.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, and in particular to a one-way check valve structure. Background Art

[0002] As one of the household appliances, dishwashers are widely used in daily life. After the dishwasher completes the washing work, the sewage generated will be discharged through the outlet pipe. However, since the sewage contains large particles of residues such as rice grains and vegetable leaves on the dishes, in order to prevent these particles from entering the dishwasher and causing pollution, a water stop valve with a non-return function is usually required in the outlet pipe.

[0003] The check valve commonly used in dishwashers is a one-way valve, which consists of a plastic check valve shell and a rubber water retaining plate. When the water retaining plate is subjected to the pressure of reverse backflow of water, the elastic recovery state of the rubber is used to press the water retaining plate to the check position to prevent backflow. However, since the water retaining plate cannot reach the check position in time, some sewage will flow back, causing the dishwasher to fail to clean the dishes inside.

[0004] Accordingly, the art needs a new technical solution to solve the above problems. Utility Model Content

[0005] In order to solve the above problem existing in the prior art, that is, the rubber water retaining plate of the one-way check valve cannot reach the non-return position in time, resulting in part of the sewage flowing back from the water retaining plate to the upstream of the one-way check valve and contaminating the dishwasher.

[0006] To this end, the utility model provides a one-way non-return structure, the one-way non-return structure comprising:

[0007] A shell body, wherein a water flow passage is provided inside the shell body, wherein the water flow passage has a water outlet and a water inlet, and the water outlet is arranged in a vertical direction;

[0008] a water baffle, which is rotatably connected to the top end of the water outlet end surface of the water outlet; and

[0009] A driving unit is arranged between the shell and the water baffle plate, and is configured so that when the water flow pressure received by the water baffle plate is greater than a first preset pressure, the water baffle plate moves away from the water outlet so that the water flow is discharged from the water outlet. It is also configured so that when the water flow pressure received by the water baffle plate is less than a second preset pressure, the water baffle plate abuts against the water outlet under the action of the driving force of the driving unit and the gravity of the water baffle plate.

[0010] In the above preferred technical solution for the one-way non-return structure, the one-way non-return structure further includes:

[0011] The sealing structure is arranged on the water baffle plate and / or the shell, and is configured so that when the water baffle plate abuts against the water outlet, the water baffle plate is sealed and connected with the water outlet.

[0012] In the above preferred technical solution for the one-way non-return structure, the sealing structure includes:

[0013] A first sealing protrusion is provided on the end surface of the water outlet facing the water baffle plate and is arranged around the edge of the water outlet; and

[0014] The second sealing protrusion is arranged on the end surface of the water baffle plate facing the water outlet and is arranged corresponding to the first sealing protrusion, so that after the water baffle plate abuts against the water outlet, the first sealing protrusion and the second sealing protrusion are plugged into each other to form a sealed connection.

[0015] In the above preferred technical solution for the one-way non-return structure, the driving part includes:

[0016] A first magnetic attraction member, which is disposed at the lower end of the end surface of the water baffle away from the water outlet; and

[0017] The second magnetic member is arranged at a position corresponding to the first magnetic member at the lower end of the water outlet facing the end surface of the water baffle, and is configured so that the first magnetic member and the second magnetic member attract each other under the action of magnetic force.

[0018] In the above preferred technical solution for the one-way non-return structure, the one-way non-return structure further includes reinforcing ribs, which are arranged on the end surface of the water outlet facing the water baffle and surround the outer edge of the water outlet.

[0019] In the above preferred technical solution for the one-way non-return structure, the upper end of the water retaining plate is rotatably connected to the upper end of the reinforcing rib.

[0020] In the above preferred technical solution for the one-way non-return structure, the lower edge of the water retaining plate is located above the reinforcing rib.

[0021] In the above preferred technical solution for the one-way non-return structure, the water baffle is a plastic water baffle.

[0022] In the above preferred technical solution for the one-way non-return structure, the water flow extends in the horizontal direction.

[0023] In the above preferred technical solution for the one-way non-return structure, the outer wall of the shell has a stepped structure, and the radial dimension of the end of the shell close to the water outlet is larger than the radial dimension of the end of the shell away from the water outlet.

[0024] When the above technical solution is adopted, the water outlet of the shell is extended in the vertical direction toward the end face of the water baffle plate, and the water baffle plate is rotatably connected to the top end of the end face of the water outlet toward the water baffle plate, so that when the water flow pressure applied to the water baffle plate is less than the second preset pressure, the water baffle plate can quickly rotate to the non-return position under the dual action of the driving force of the driving part and its own gravity, thereby blocking the sewage downstream of the one-way non-return structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0026] Figure 1 It is a structural schematic diagram of the water baffle of the one-way non-return structure of the utility model in the non-return position;

[0027] Figure 2 It is a structural schematic diagram of the water baffle of the one-way non-return structure of the utility model in an open position;

[0028] Figure 3 It is a front view of the one-way non-return structure of the utility model;

[0029] Figure 4 is along Figure 3 Section view along line AA.

[0030] List of reference numerals:

[0031] 100. One-way check structure; 1. Shell; 11. Water outlet; 111. First sealing protrusion; 12. Water inlet; 13. Reinforcing ribs; 2. Water baffle; 3. Driving unit; 31. First magnetic element; 32. Second magnetic element; 4. Sealing structure; 41. First sealing protrusion; 42. Second sealing protrusion. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0033] It should be noted that in the description of the present invention, the terms "on", "inside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] like Figure 1 See also Figure 2-Figure 4 , in order to solve the problem that the rubber water baffle of the one-way check valve in the existing technology cannot reach the non-return position in time, causing part of the sewage to flow back from the water baffle to the upstream of the one-way check valve and pollute the dishwasher. The utility model provides a one-way non-return structure 100, which is used to communicate with the outlet pipe (not shown) inside the dishwasher, so as to block the discharged sewage downstream of the one-way non-return structure 100. The one-way non-return structure 100 includes a shell 1, a water baffle 2 and a driving part 3. A water flow path is provided inside the shell 1, and the water flow path has a water outlet 11 and a water inlet 12, and the end face of the water outlet 11 is arranged in the vertical direction. The water baffle 2 is rotatably connected to the top of the water outlet end face of the water outlet 11, so that the water outlet 11 of the shell 1 can be blocked when the water baffle 2 is not subjected to water flow pressure. The driving part 3 is arranged between the shell 1 and the water baffle 2. When the water flow pressure on the water baffle 2 is greater than the preset first pressure, the water baffle 2 can rotate around the position of the rotation connection in a direction away from the water outlet 11, so that water can be discharged from the water outlet 11 of the shell 1. When the water flow pressure on the water baffle 2 is less than the preset second pressure, the water baffle 2 rotates to the non-return position under the action of the driving force of the driving part 3 and its own gravity, so that the water baffle 2 can block the water outlet 11. In this way, the water baffle 2 can quickly rotate to the non-return position under the dual action of the driving force of the driving part 3 and its own gravity, so that the sewage can be quickly blocked downstream of the one-way non-return structure 100.

[0036] As a possible implementation, Figure 2 See also Figure 4 The one-way non-return structure 100 also includes a sealing structure 4, which is arranged on the water baffle plate 2 and / or the housing 1, and is configured so that when the water baffle plate 2 is in the non-return position, the water baffle plate 2 is sealed and connected to the water outlet 11. Specifically, in the specific implementation of the present invention, the sealing structure 4 includes a first sealing protrusion 41 and a second sealing protrusion 42. The first sealing protrusion 41 is arranged on the end surface of the water outlet 11 facing the water baffle plate 2, and the first sealing protrusion 41 is arranged around the edge of the water outlet 11. The second sealing protrusion 42 is arranged on the end surface of the water baffle plate 2 facing the water outlet 11, and the second sealing protrusion 42 is arranged corresponding to the first sealing protrusion 41, so that when the water baffle plate 2 rotates to the non-return position, the first sealing protrusion 41 and the second sealing protrusion 42 are plugged into each other to form a sealed connection.

[0037] It should be noted that, although the sealing structure 4 described above includes a first sealing protrusion 41 arranged at the edge of the water outlet 11 and a second sealing protrusion 42 correspondingly arranged on the water baffle 2, this is not restrictive. In the specific implementation of the present invention, only the second sealing protrusion 42 can be arranged on the water baffle 2, and the second sealing protrusion 42 is arranged corresponding to the shape of the water outlet 11, so that when the water baffle 2 rotates to the stop position, the second sealing protrusion 42 can be inserted into the water outlet 11, so that the water baffle 2 can be sealed and connected with the water outlet 11. Alternatively, the sealing structure 4 can also be a rubber gasket arranged on the water baffle 2, and the size of the rubber gasket is larger than the size of the water outlet 11, so that when the water baffle 2 rotates to the non-return position, the rubber gasket can block the water outlet 11. Without departing from the basic principle of the present invention, those skilled in the art can flexibly select the specific setting form of the sealing structure 4 according to the specific application scenario, as long as it can be achieved that the water baffle 2 is sealed and connected with the water outlet 11 when the water baffle 2 rotates to the non-return position.

[0038] As a possible implementation, Figure 2 See also Figure 4 The driving part 3 includes a first magnetic component 31 and a second magnetic component 32. The first magnetic component 31 is arranged at the lower end of the end face of the water baffle 2 away from the water outlet 11. The second magnetic component 32 is arranged at the lower end of the end face of the water baffle 2 facing the water outlet 11, corresponding to the position of the first magnetic component 31, and is constructed so that the first magnetic component 31 and the second magnetic component 32 attract each other under the action of magnetic force, so that when the water baffle 2 rotates to the non-return position, the suction force between the first magnetic component 31 and the second magnetic component 32 is the largest, so that the water baffle 2 can better block the water outlet 11.

[0039] In the specific implementation process of the utility model, the water baffle 2 is subjected to the pressure exerted by the upstream water flow. When this pressure exceeds the first preset pressure, the water baffle 2 will be flushed away by the water flow, so that the distance between the first magnetic component 31 and the second magnetic component 32 increases. As the distance increases, the suction force between the first magnetic component 31 and the second magnetic component 32 will decrease accordingly. When the distance between the first magnetic component 31 and the second magnetic component 32 is greater than a certain value, the suction force will become zero. At this time, the water baffle 2 is only subjected to its own gravity, the gravity of the first magnetic component 31 and the pressure of the water flow. When there is sufficient water upstream of the shell 1, the water baffle 2 can reach the maximum position that can be reached under the pressure of the water flow and remain in this position. In this way, the water flow can be discharged from the water outlet 11 at a faster speed. Until the water flow is almost exhausted, the pressure of the water flow on the water baffle 2 gradually decreases, so that the water baffle 2 first rotates in the direction close to the water outlet 11 under the action of its own gravity and the gravity of the first magnetic component 31. When the water baffle 2 rotates to a certain position, suction is generated between the first magnetic component 31 and the second magnetic component 32. As the pressure of the water flow further decreases, the distance between the water baffle 2 and the water outlet 11 becomes smaller and smaller, so that the suction between the first magnetic component 31 and the second magnetic component 32 becomes larger and larger. When the pressure applied by the water flow on the water baffle is less than the second preset pressure, the water baffle 2 blocks the water outlet 11 under the action of its own gravity and the first magnetic component 31 and the suction between the first magnetic component 31 and the second magnetic component 32, thereby blocking the water flow downstream of the water baffle 2 to prevent the water flow from flowing back to the upstream of the one-way check structure 100, thereby ensuring the cleanliness of the dishwasher.

[0040] It should be noted that the value of the first preset pressure can be determined by the designer based on experience, experiments, calculations, etc. For example, the value of the first preset pressure can be 2-5N. Although the first preset pressure value described above can be 2-5N, this is not restrictive. Those skilled in the art can determine the value of the first preset pressure according to specific needs, as long as it can ensure that the dishwasher can drain water in time when draining water through the one-way check structure 100.

[0041] In addition, the value of the second preset pressure can also be determined by the designer based on experience, experiments, calculations, etc. For example, the value of the second preset pressure can be 0-2N. Although the value of the second preset pressure described above can be 0-2N, this is not restrictive. Those skilled in the art can determine the value of the second preset pressure according to specific needs, as long as it can ensure that the dishwasher can drain water completely while preventing water backflow in time when draining water through the one-way check structure 100.

[0042] As a possible implementation, Figure 2 See also Figure 3 and Figure 4The one-way check structure 100 also includes a reinforcing rib 13, which is arranged on the end face of the water outlet 11 facing the water baffle 2 and surrounds the outer edge of the water outlet 11. In this way, the strength of the end face of the water outlet 11 facing the water baffle 2 can be increased by the reinforcing rib 13, so that the water baffle 2 can tightly block the water outlet 11.

[0043] As a possible implementation, Figure 2 See also Figure 4 The upper end of the water baffle plate 2 is rotatably connected to the upper end of the reinforcing rib 13. Specifically, a transfer hole is provided at the upper end of the reinforcing rib 13, and a transfer shaft is provided at the upper end of the water baffle plate 2 to cooperate with the transfer hole, so that the water baffle plate 2 can be rotatably connected to the reinforcing rib 13. Moreover, since the reinforcing rib 13 protrudes from the end surface of the water baffle plate 2 facing the water outlet 11, the transfer hole can also protrude from the end surface of the water outlet 11 facing the water baffle plate 2, so that when the transfer shaft of the water baffle plate 2 enters the transfer hole of the reinforcing rib 13, the water baffle plate 2 can be flexibly rotated and can be tightly sealed and connected to the water outlet 11.

[0044] As a possible implementation, Figure 3 See also Figure 4 The lower edge of the water baffle plate 2 is located above the reinforcing rib 13 so that when the water baffle plate 2 is located at the non-return position, the water baffle plate 2 can avoid the reinforcing rib 13, thereby preventing the water baffle plate 2 from interfering with the reinforcing rib 13.

[0045] As a possible implementation, the water baffle plate 2 is a plastic water baffle plate 2, so that when the water baffle plate 2 is located at the non-return position, it can be unaffected by the magnetic force of the second magnetic attraction member 32, thereby ensuring the non-return performance of the one-way non-return structure 100.

[0046] Of course, the above-mentioned replaceable implementations, as well as the replaceable implementations and optional implementations, can be used in a cross-coordinated manner to combine new implementations to suit more specific application scenarios.

[0047] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments may be used in any combination.

[0048] So far, the technical solution of the present invention has been described in conjunction with the optional implementations shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific implementations. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A one-way non-return structure, characterized in that: The one-way non-return structure comprises: A shell body, wherein a water flow passage is provided inside the shell body, wherein the water flow passage has a water outlet and a water inlet, and a water outlet end surface of the water outlet is arranged in a vertical direction; a water baffle, which is rotatably connected to the top of the water outlet so that the water baffle can block the water outlet when the water baffle is not subjected to water flow pressure; and The driving part is arranged between the shell and the water baffle plate, and is configured so that when the water flow pressure received by the water baffle plate is greater than a first preset pressure, the water baffle plate is away from the water outlet so that the water flow is discharged from the water outlet. The driving part is also configured so that when the water flow pressure received by the water baffle plate is less than a second preset pressure, the water baffle plate is located in a non-return position under the action of the driving force of the driving part and the gravity of the water baffle plate, so that the water baffle plate can block the water outlet.

2. The one-way non-return structure according to claim 1, characterized in that: The one-way non-return structure also includes: A sealing structure is provided on the water baffle plate and / or the housing and is configured such that when the water baffle plate is located at the non-return position, the water baffle plate is sealed and connected to the water outlet.

3. The one-way non-return structure according to claim 2, characterized in that: The sealing structure comprises: A first sealing protrusion is provided on the end surface of the water outlet facing the water baffle plate and is arranged around the edge of the water outlet; and The second sealing protrusion is arranged on the end surface of the water baffle plate facing the water outlet and is arranged corresponding to the first sealing protrusion, so that after the water baffle plate abuts against the water outlet, the first sealing protrusion and the second sealing protrusion are plugged into each other to form a sealed connection.

4. The one-way non-return structure according to claim 1, characterized in that: The driving unit comprises: A first magnetic attraction member is disposed at a lower end of an end surface of the water baffle facing away from the water outlet; and The second magnetic member is arranged at a position corresponding to the first magnetic member at the lower end of the water outlet facing the end surface of the water baffle, and is configured so that the first magnetic member and the second magnetic member attract each other under the action of magnetic force.

5. The one-way non-return structure according to claim 1, characterized in that: The one-way non-return structure further includes a reinforcing rib, which is arranged on the end surface of the water outlet facing the water baffle and surrounds the outer edge of the water outlet.

6. The one-way non-return structure according to claim 5, characterized in that: The upper end of the water retaining plate is rotatably connected to the upper end of the reinforcing rib.

7. The one-way non-return structure according to claim 5, characterized in that: The lower edge of the water retaining plate is located above the reinforcing rib.

8. The one-way non-return structure according to claim 1, characterized in that: The water baffle is a plastic water baffle.

9. The one-way non-return structure according to claim 1, characterized in that: The water flow passage is extended in the horizontal direction, the outer wall of the shell has a stepped structure, and the radial dimension of the end of the shell close to the water outlet is larger than the radial dimension of the end of the shell far from the water outlet.

10. A dishwasher, characterized in that: The dishwasher comprises a drainage pipeline, and further comprises the one-way non-return structure according to any one of claims 1 to 9, wherein the one-way non-return structure is connected in the drainage pipeline.

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