Filtering device and swimming pool robot cleaner

Abstract

A filtering device, comprising a first filtering compartment (1), a second filtering compartment (2), a first one-way valve (10) and a second one-way valve (20). The first filtering compartment (1) is provided with a first water inlet (12) communicated with the outside; the second filtering compartment (2) is provided with a second water inlet (22) communicated with the first filtering compartment (1); the first one-way valve (10) is provided at the first water inlet (12); the second one-way valve (20) is provided at the second water inlet (22); an external water flow enters the first filtering compartment (1) through the first water inlet (12), and the water flow in the first filtering compartment (1) enters the second filtering compartment (2) through the second water inlet (22); the first one-way valve (10) is used for opening or closing the first water inlet (12) in one direction; and the second one-way valve (20) is used for opening or closing the second water inlet (22) in one direction. Further provided is a swimming pool robot cleaner comprising the filtering device. The filtering device has higher anti-blocking capability, so that the blocking frequency and the blocking speed of filtering devices can be reduced.

Description

Filter device and swimming pool robot Technical Field

[0001] The present invention relates to the technical field of swimming pool cleaning equipment, and in particular to a filtering device and a swimming pool robot. Background Art

[0002] Swimming pools are places where people swim. During use, they generate garbage and bacteria, necessitating regular cleaning. Nowadays, pool robots are often used for pool cleaning, freeing up labor and improving people's quality of life. These robots are equipped with a filter that draws in contaminated water from the pool, retaining it within the filter, and then discharges clean water back into the pool.

[0003] However, the inventors have discovered that the existing filtering device of the swimming pool robot is a single filtering chamber. Due to the action of water flow, dirt in the water is easily washed onto the filter screen or filter port of the filtering chamber, resulting in the filter screen or filter port being unable to drain normally, causing the filtering chamber to be blocked quickly and frequently, and resulting in insufficient space utilization of the filtering chamber. When the filtering chamber only accommodates a small amount of dirt, a blockage problem will occur. The operator needs to frequently clean or replace the filter screen of the swimming pool robot. When the filtering device is in a blocked state, the swimming pool robot cannot normally filter the dirt in the pool water, affecting the working efficiency of the swimming pool robot and the quality of cleaning the pool.

[0004] Therefore, it is now urgent to design a new filtering device to solve the above-mentioned existing technical problems.

[0005] Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a filtering device and a swimming pool robot to solve the problem that the filtering device of the existing swimming pool robot is easily clogged.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a filtering device, including a first filter tank, a second filter tank, a first one-way valve and a second one-way valve, the first filter tank is provided with a first water inlet connected to the outside, the second filter tank is provided with a second water inlet connected to the first filter tank, the first one-way valve is provided at the first water inlet, and the second one-way valve is provided at the second water inlet; wherein, external water flows into the first filter tank through the first water inlet, and the water in the first filter tank enters the second filter tank through the second water inlet, the first one-way valve is used for unidirectional conduction or isolation of the first water inlet, and the second one-way valve is used for unidirectional conduction or isolation of the second water inlet.

[0008] Furthermore, the first one-way valve includes a first elastic member and a first one-way cover plate, and the second one-way valve includes a second elastic member and a second one-way cover plate. The first elastic member is connected to the first one-way cover plate so that the first one-way cover plate can maintain a covered state, and the second elastic member is connected to the second one-way cover plate so that the second one-way cover plate can maintain a covered state.

[0009] Furthermore, the elastic force of the first elastic member is smaller than the elastic force of the second elastic member.

[0010] Furthermore, the second filter bin is provided with a handle.

[0011] Furthermore, the filtering device includes at least two second filtering chambers.

[0012] Furthermore, it also includes a third filter tank and a third one-way valve. The third filter tank is provided with a third water inlet connected to the second filter tank. The third one-way valve is arranged in the third water inlet. The third one-way valve is used to unidirectionally guide or block the third water inlet.

[0013] Furthermore, the first filter chamber is detachably connected to the second filter chamber.

[0014] Furthermore, the first filter tank is provided with an opening at the connection between the first filter tank and the second water inlet.

[0015] Another object of the present invention is to provide a swimming pool robot comprising the above-mentioned filtering device.

[0016] Furthermore, it also includes a shell and a water pump, the shell is provided with a water intake and a water outlet, a water flow channel is formed between the water intake and the water outlet, the filtering device is arranged in the water flow channel, and the water pump is at least partially located in the water flow channel.

[0017] The beneficial effects of the present invention are as follows: the first filter chamber and the second filter chamber of the filter device provided by the present invention can both be provided with filter screens or filter ports, and the filter device is assembled inside the swimming pool robot. In actual use, the interior of the swimming pool robot sucks water from the swimming pool, and the water will form a water flow with a certain impact force. The water flow can flush open the first one-way valve to pass through the first water inlet from the outside of the filter device to the first filter chamber in one direction; when the first filter chamber is in an empty chamber state, water can be discharged from the filter screen or filter port of the first filter chamber, and the dirt in the water is filtered in the first filter chamber. At this time, the water will not have too much impact on the second one-way valve. Under the action of a large impact force, the second one-way valve remains in a state of isolating the second water inlet; as the first filter chamber absorbs and filters more and more dirt, the filter screen or filter port of the first filter chamber will be blocked more and more, and the water cannot be discharged normally from the first filter chamber, and the impact of the water on the second one-way cover plate increases; when the first filter chamber is in a full state or the filter screen / filter port of the first filter chamber is blocked to a certain extent, the second one-way valve will open under the action of the impact of the water, and water will enter the second filter chamber from the first filter chamber through the second water inlet in one direction, and the water will be discharged from the filter chamber / filter port of the second filter chamber, and the dirt in the water will be filtered in the second filter chamber.

[0018] In summary, the filter device provided by the present invention is provided with at least two filter chambers that can be activated in sequence, and the filter chambers can more fully filter the dirt in the water, and the clogging frequency and clogging speed of the filter device are low. The filter device improves the anti-clogging ability and correspondingly reduces the time cost of the operator to manage and clean the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of a filtering device according to an embodiment of the present invention from one viewing angle;

[0020] FIG2 is a schematic structural diagram of the filtering device according to one embodiment of the present invention from another perspective;

[0021] FIG3 is a cross-sectional view taken along line AA of FIG2 in which the first cover plate and the second cover plate are both in a covered state;

[0022] FIG4 is a cross-sectional view taken along line AA of FIG2 with the first cover plate and the second cover plate both in an open state;

[0023] FIG5 is a schematic structural diagram of a swimming pool robot according to an embodiment of the present invention;

[0024] FIG6 is a cross-sectional view taken along line BB in FIG5 .

[0025] Explanation of reference numerals: 1. First filter chamber; 10. First elastic member; 11. First one-way cover; 12. First water inlet; 13. First one-way valve; 2. Second filter chamber; 20. Second elastic member; 21. Second one-way cover; 22. Second water inlet; 23. Second one-way valve; 3. Handle; 4. Housing; 5. Water pump; 6. Water inlet; 7. Water outlet; 8. Roller brush; 9. Drive assembly. DETAILED DESCRIPTION

[0026] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0027] Please refer to Figures 1 to 6. A filtering device includes a first filter tank 1, a second filter tank 2, a first one-way valve 10 and a second one-way valve 20. The first filter tank 1 is provided with a first water inlet 12 which is connected to the outside of the filtering device, and the second filter tank 2 is provided with a second water inlet 22 which is connected to the first filter tank 1. The first one-way valve 10 is provided in the first water inlet 12, and the second one-way valve 20 is provided in the second water inlet 22. The external water flow of the filtering device enters the first filter tank 1 through the first water inlet 12, and the water flow in the first filter tank 1 enters the second filter tank 2 through the second water inlet 22. The first one-way valve 10 is used for unidirectional conduction or isolation of the first water inlet, and the second one-way valve 20 is used for unidirectional conduction or isolation of the second water inlet.

[0028] The working principle of the filtering device provided by the present invention is briefly described as follows: in actual application, the device is assembled inside a swimming pool robot. When the swimming pool robot performs cleaning operations in the swimming pool, the interior of the swimming pool robot will suck in water from the swimming pool and form a water flow with a certain impact force inside the swimming pool robot.

[0029] When the first filter chamber 1 and the second filter chamber 2 of the filter device are both in an empty state, the water flow in the swimming pool robot generates an impact force on the first one-way cover 11, the first one-way valve 10 is in an open state under the impact of the water flow, and the first water inlet 12 is in a conducting state, and water can enter the first filter chamber 1 from the outside of the filter device through the first water inlet 12 in a one-way manner; the first filter chamber 1 can be provided with a filter screen or a filter port, and water can be discharged from the filter screen or the filter port to the drainage channel of the swimming pool robot, and the dirt in the water is filtered in the first filter chamber 1 through the filter screen or the filter port; because the water in the first filter chamber 1 can be discharged from the filter screen or the filter port of the first filter chamber 1 in a timely manner, the water in the first filter chamber 1 will not generate too much impact force on the second one-way cover 21, and at this time the second one-way cover 21 remains in a covered state;

[0030] When the swimming pool robot is cleaning, more and more dirt will be filtered and accumulated in the first filter chamber 1. The dirt may clog the filter screen or filter port of the first filter chamber 1, causing the water flow discharged from the first filter chamber 1 to the drainage channel of the swimming pool robot to become smaller and smaller. The water in the first filter chamber 1 cannot be discharged normally. In addition, the swimming pool robot continuously injects water into the first water inlet 12, causing the impact force of the water on the second one-way valve 20 to increase.

[0031] When the first filter chamber 1 is blocked to a certain extent, the second one-way valve 20 opens under the impact of the water flow. At this time, the second water inlet 22 is connected, and water can enter the second filter chamber 2 from the first filter chamber 1 through the second water inlet 22 in one direction. The second filter chamber 2 can be provided with a filter screen or a filter port, and the water flow will flow from the filter screen or the filter port of the second filter chamber 2 to the drainage channel of the swimming pool robot, and the dirt in the water will be filtered into the second filter chamber 2 through the filter screen or the filter port.

[0032] In addition, in some preferred embodiments of the present invention, the operator can also specifically control the first one-way valve 10 to be more easily opened by the water pressure than the second one-way valve 20, for example:

[0033] The first one-way valve 10 may include a first one-way cover plate 11, the second one-way valve 20 may include a second one-way cover plate 21, and the first water inlet 12 and the second water inlet 22 may be through openings opened in a vertical direction, the first one-way cover plate 11 is rotatably connected to the first water inlet 12, the second one-way cover plate 21 is rotatably connected to the second water inlet 22, and the first one-way cover plate 11 can cover the first water inlet 12 under the action of gravity, and the second one-way cover plate 21 can cover the second water inlet 22 under the action of gravity, then at this time, the operator During specific control, the operator can make the weight of the first one-way cover plate 11 less than the weight of the second one-way cover plate 21, so that when the impact of the water is greater than the weight of the first one-way cover plate 11, the impact of the water on the first one-way cover plate 11 can open the first one-way cover plate 11; when the impact of the water is greater than the weight of the second one-way cover plate 21, the impact of the water on the second one-way cover plate 21 can open the second one-way cover plate 21, ensuring that the first one-way cover plate 11 is easier to open under the action of the water flow than the second one-way cover plate 21.

[0034] The filter device can further ensure that the first filter chamber 1 fully absorbs the dirt in the filtered water, and only when the first filter chamber 1 is blocked and unable to drain water, the second one-way cover 21 will open under the impact of the water flow and connect the second water inlet 22, thereby activating the second filter chamber 2 and further reducing the frequency of overall blockage of the filter device.

[0035] In addition, in some other preferred embodiments of the present invention, the operator can also choose to stagger the first water inlet 12 and the second water inlet 22 to avoid excessive water flow force in the swimming pool robot, which may cause the second one-way cover 21 to open and the second water inlet 22 to be connected when the first filter chamber 1 has not fully absorbed the filtered dirt.

[0036] The core invention of the present invention is that the filtering device provided by the present invention can connect the first filter chamber 1 and the second filter chamber 2 in sequence according to the state of the filter chamber absorbing and filtering dirt or the blockage state of the filter chamber, and ensure that when the filtering device is filtering dirt in the water, only when the first filter chamber 1 fully absorbs the dirt in the filtered water or the first filter chamber 1 is blocked to a certain extent, the impact of the water flow on the second one-way cover 21 is increased to the point where the second one-way cover 21 can be opened, and the water flow can enter the second filter chamber 2 through the second water inlet 22 to filter the dirt in the water with the second filter chamber 2.

[0037] The beneficial effect of the filtration device provided by the present invention is that it effectively ensures that the first filter chamber 1 fully absorbs the dirt in the filtered water, or that the first filter chamber 1 is blocked to a certain extent before the second filter chamber 2 is connected, and the function of absorbing and filtering the dirt in the water is continued through the second filter chamber 2. This filtration device solves the problem that existing filtration devices are easily clogged with dirt and cannot function properly even when absorbing and filtering only a small amount of dirt. Therefore, the filtration device provided by the present invention has better anti-clogging performance, which can reduce the overall clogging frequency and clogging speed of the filtration device, thereby reducing the time cost of operators managing the filtration device of the swimming pool robot.

[0038] Furthermore, it also includes a first elastic member 10 and a second elastic member 20, the first elastic member 10 is connected to the first one-way cover plate 11, so that the first one-way cover plate maintains a covered state, and the second elastic member 20 is connected to the second one-way cover plate 21, so that the second one-way cover plate maintains a covered state.

[0039] As can be seen from the above description, in the filtration device provided by the present invention, the elastic force of the first elastic member 10 can act on the first one-way cover plate 11, thereby ensuring that the first one-way cover plate can remain in a closed state when not affected by the impact of water, thereby blocking the first water inlet 12. In addition, when the impact of water on the first one-way cover plate 11 is greater than the elastic force of the first elastic member 10 on the first one-way cover plate, the first one-way cover plate can be opened and one-way conduction can be conducted to the first water inlet 12.

[0040] The elastic force of the second elastic member 20 can act on the second one-way cover 21, thereby ensuring that the second one-way cover can remain in a closed state when not affected by the impact of water, so as to isolate the second water inlet 22; when the impact of water on the second one-way cover 21 is greater than the elastic force of the second elastic member 20 on the second one-way cover, the second one-way cover can be opened under the action of water and conduct the second water inlet 22.

[0041] Furthermore, in the filtering device provided by the present invention, the elastic force of the first elastic member 10 is smaller than the elastic force of the second elastic member 20 .

[0042] From the above description, it can be seen that the elastic force of the first elastic member 10 on the first one-way cover 11 can be specifically controlled to be smaller than the elastic force of the second elastic member 20 on the second one-way cover 21. When the filtering device is just put into use, the second one-way cover 21 is more difficult to be opened under the action of water under the action of the second elastic member 20. In actual application, the operator can also choose to control the flow rate of water sucked into the swimming pool robot (for example, controlling the speed of the water pump 5) to avoid the water impact being too large and opening the first one-way cover 11 and the second one-way cover 21 at the same time; by controlling the flow rate of water sucked into the swimming pool robot, the water impact can be sufficient to open the first one-way cover 11, but not to open the second one-way cover 21.

[0043] Therefore, controlling the elastic force of the first elastic member 10 on the first one-way cover plate 11 to be smaller than the elastic force of the second elastic member 20 on the second one-way cover plate 21 can further ensure that each filter chamber fully absorbs the dirt in the filtered water, and only when the filter chamber is filled with dirt or blocked to a certain extent can the next-level filter chamber be connected, thereby improving the utilization efficiency of each filter chamber and correspondingly reducing the overall blockage frequency of the filter device.

[0044] In addition, in some other preferred embodiments of the present invention, the first elastic member 10 and the second elastic member 20 can also be replaced by magnetic members, that is, the first elastic member 10 is a first magnetic member, the second elastic member 20 is a second magnetic member, the first one-way cover plate 11 is magnetically adsorbed to the first water inlet 12 under the action of the first magnetic member, and the second one-way cover plate 21 is magnetically adsorbed to the second water inlet 22 under the action of the second magnetic member; when the impact force generated by water on the first one-way cover plate 11 is greater than the magnetic attraction force of the first magnetic member, the first one-way cover plate 11 is The second one-way cover 21 opens under the action of the impact of water; when the impact of water on the second cover is greater than the magnetic attraction of the second magnetic part, the second one-way cover 21 opens under the action of the impact of water; when the swimming pool robot stops cleaning, the impact of water on the first one-way cover 11 decreases, and the first one-way cover 11 covers the first water inlet 12 under the action of the magnetic attraction of the first magnetic part to isolate the first water inlet 12, and the second one-way cover 21 covers the second water inlet 22 under the action of the magnetic attraction of the second magnetic part to isolate the second water inlet 22.

[0045] In addition, in some other preferred embodiments of the present invention, the first one-way cover 11 is rotatably connected to the first water inlet 12, and the second one-way cover 21 is rotatably connected to the second water inlet 22. In order to avoid the first one-way cover 11 and the second one-way cover 21 from flipping over and affecting the fixing effect of the first elastic member 10 and the second elastic member 20, a first limiting portion can be provided on the first filter bin 1, and a first limiting block matching the first limiting portion can be provided on the first one-way cover 11. When the first one-way cover 11 is opened, the first limiting block abuts against the first limiting portion; a second limiting portion can be provided on the second filter bin 2, and a second limiting block matching the second limiting portion can be provided on the second one-way cover 21. When the second one-way cover 21 is opened, the second limiting block abuts against the second limiting portion.

[0046] Furthermore, in the filtering device provided by the present invention, a handle 3 is provided on the second filtering chamber 2 .

[0047] As can be seen from the above description, in the filter device provided by the present invention, when the filter device needs to be cleaned, the handle 3 can facilitate the operator to remove the filter device from the swimming pool robot, and the operator can use the handle to lift the filter device to the trash can on the pool shore for cleaning. Providing the handle 3 on the second filter chamber 2 can facilitate the operator's operation and use.

[0048] Furthermore, in the filtering device provided by the present invention, the filtering device includes at least two second filtering chambers 2 .

[0049] From the above description, it can be seen that the second filter chamber 2 of the filter device provided by the present invention can be set to multiple, and each second filter chamber 2 is respectively connected to the first filter chamber 1, so the volume of each second filter chamber 2 is relatively small, and each second filter chamber 2 is respectively provided with a filter net or a filter port. When the first filter chamber 1 is blocked, the water filtering capacity and drainage performance of the filter device can be improved by setting multiple second filter chambers 2, and the space utilization rate of each second filter chamber 2 for accommodating dirt can be correspondingly improved to ensure that the second filter chamber 2 can fully absorb the dirt in the filtered water.

[0050] Furthermore, the filtering device provided by the present invention also includes a third filter tank and a third one-way valve. The third filter tank is provided with a third water inlet connected to the second filter tank 2. The third one-way valve is provided in the third water inlet. The third one-way valve is used to control the water flow from the second filter tank 2 to enter the third filter tank in one direction through the third water inlet.

[0051] From the above description, it can be seen that when the second filter chamber 2 absorbs and filters a sufficient amount of dirt, the second filter chamber 2 is prone to blockage, which causes the second filter chamber 2 to be unable to drain normally. At this time, the impact of the water in the second filter chamber 2 on the third one-way valve increases. When the second filter chamber 2 is blocked to a certain extent, the third one-way valve opens under the action of water and connects to the third water inlet. Water enters the third filter chamber from the second filter chamber 2 through the third water inlet in one direction. The third filter chamber can be provided with a third filter screen or a third filter port. Water is discharged from the third filter screen or the third filter port, and the dirt in the water is filtered by the filter screen or the filter port in the third filter chamber.

[0052] Among them, in some preferred embodiments of the present invention, the third one-way valve may include a third one-way cover plate and a third elastic member, the third elastic member is connected to the third one-way cover plate, and the elastic force of the third elastic member on the third one-way cover plate is greater than the elastic force of the second elastic member 20 on the second one-way cover plate 21.

[0053] Of course, in other preferred embodiments of the present invention, the filter device can be provided with a plurality of filter chambers connected in sequence according to actual use requirements.

[0054] Furthermore, in the filtering device provided by the present invention, the first filtering chamber 1 is detachably connected to the second filtering chamber 2 .

[0055] It can be seen from the above description that when cleaning the filter device, the operator can disassemble and separate the first filter chamber 1 and the second filter chamber 2 to reduce the difficulty of cleaning the first filter chamber 1 and the second filter chamber 2.

[0056] In some preferred embodiments of the present invention, the first filter chamber 1 may be provided with a card slot, and the second filter chamber 2 may be provided with a buckle that matches the card slot, so that the first filter chamber 1 and the second filter chamber 2 are detachably connected through the card slot and the buckle.

[0057] Furthermore, in the filtering device provided by the present invention, the first filtering chamber 1 is provided with an opening corresponding to the second water inlet 22 .

[0058] As can be seen from the above description, the first filter compartment 1 is provided with an opening to improve the alignment accuracy of the first filter compartment 1 and the second filter compartment 2 during installation.

[0059] Another object of the present invention is to provide a swimming pool robot comprising the above-mentioned filtering device.

[0060] As can be seen from the above description, the beneficial effects of the present invention are that the filtering device of the swimming pool robot provided by the present invention has better anti-clogging performance, and the clogging frequency and clogging speed of the filtering device of the swimming pool robot are low.

[0061] Furthermore, the filtering device provided by the present invention also includes a shell 4 and a water pump 5, and the shell 4 is provided with a water intake port 6 and a water outlet 7, and a water flow channel is formed between the water intake port 6 and the water outlet 7. The filtering device is arranged in the water flow channel, and the water pump 5 is at least partially located in the water flow channel.

[0062] As can be seen from the above description, when the swimming pool robot provided by the present invention is actually used, it sucks water from the swimming pool into the water flow channel through the water pump 5, and the water flows through: water intake 6-filter device-water outlet 7 in sequence, and the filter device can filter out dirt in the water and discharge the filtered clean water to the water outlet 7.

[0063] In other preferred embodiments of the present invention, the swimming pool robot further includes a driving assembly 9 and a roller brush 8. The driving device is provided on the outer shell, and the roller brush 8 is provided in the water suction port 6. In actual application, the swimming pool robot moves in the swimming pool through the driving device, and the roller brush 8 can rotate. When the swimming pool robot moves, the roller brush 8 can push the dirt in the water to the water suction port 6, so that the water suction port 6 can suck in the dirt in the swimming pool water and filter the dirt in the swimming pool water through the filtering device.

[0064] Example 1

[0065] As shown in Figures 1 to 6, embodiment 1 of the present invention is: a filtering device, including a first filter tank 1, a second filter tank 2, a first one-way valve 10 and a second one-way valve 20, the first filter tank 1 is provided with a first water inlet 12 connected to the outside, the second filter tank 2 is provided with a second water inlet 21 connected to the first filter tank 1, the first one-way valve 10 is provided at the first water inlet 12, and the second one-way valve 20 is provided at the second water inlet 21; wherein, external water flows into the first filter tank 1 through the first water inlet 12, and water flows in the first filter tank 1 enters the second filter tank 2 through the second water inlet 21, the first one-way valve 10 is used for unidirectional conduction or isolation of the first water inlet 12, and the second one-way valve 20 is used for unidirectional conduction or isolation of the second water inlet 21.

[0066] Please refer specifically to Figures 3 and 4. The first filter chamber 1 and the second filter chamber 2 are detachably connected. The first filter chamber 1 is provided with a first water inlet 12 that is connected to the outside of the filter device. A first one-way valve 10 is provided in the first water inlet 12. Water from the outside of the filter device enters the first filter chamber 1 through the first water inlet 12. A first filter screen is provided on the side wall of the first filter chamber 1. The water in the first filter chamber 1 can flow out from the first filter screen.

[0067] The second filter chamber 2 is provided with a second water inlet 22 which is in continuous communication with the first filter chamber 1. A second one-way valve 20 is provided in the second water inlet 22. Water in the first filter chamber 1 flows into the second filter chamber 2 through the second water inlet 22. A second filter screen is provided on the side wall of the second filter chamber 2. Water in the second filter chamber 2 can flow out of the second filter screen.

[0068] As shown in FIG. 5 and FIG. 6 , the filtering device provided in the first embodiment can be specifically applied to a swimming pool robot.

[0069] In the first embodiment of the present invention, a swimming pool robot equipped with the above-mentioned filtering device is also provided, which includes a shell 4, a water pump 5, a drive assembly 9 and a roller brush 8. The drive assembly 9 is arranged on the shell 4 and is used to drive the swimming pool robot to move in the water of the swimming pool. A water suction port 6 and a water outlet 7 are opened on the shell 4. The roller brush 8 is arranged in the water suction port 6. The filtering device is arranged between the water suction port 6 and the water outlet 7, and an inlet channel is formed between the filtering device and the water suction port 6. A drainage channel is formed between the filtering device and the water outlet 7. The water pump 5 is at least partially located in the water flow channel, so that the water flow channel generates a certain suction effect through the water pump 5.

[0070] The principle of the swimming pool robot provided in the first embodiment for cleaning water dirt is briefly described as follows:

[0071] The swimming pool robot travels in the water under the action of the drive device, and the roller brush 8 rotates to roll dirt in the water to the water suction port 6. When the water pump 5 is working, the water flow channel generates suction under the action of the water pump 5, and controls the water to be sucked into the water channel from the suction port. The water forms a water flow with a certain impact in the water inlet channel. The first one-way valve 10 is connected to the first water inlet 12 under the impact of the water flow. The water flow and the dirt in the water flow pass through the first water inlet 12 from the water inlet channel in a one-way manner and enter the first filter chamber 1.

[0072] When the first filter chamber 1 is in an empty state, water flows out of the first filter screen into the drainage channel and then is discharged from the drainage channel to the water outlet 7. Impurities in the water are filtered in the first filter chamber 1, and the water flows out of the filter screen. The impact of the water flow in the first filter chamber 1 on the second one-way valve 20 is small and insufficient to open the second one-way valve 20. Therefore, the second one-way valve 20 remains in a state of isolating the second water inlet 22.

[0073] When the first filter tank 1 is in a full state: as the amount of dirt in the first filter tank 1 increases, the first filter screen is gradually blocked by the dirt, and water cannot be discharged from the first filter screen. The impact of the water flow in the first filter tank 1 on the second one-way cover 21 increases, and the second one-way valve 20 can be opened to the second water inlet 22 under the impact of the water flow. Water enters the second filter tank 2 from the first filter tank 1 through the second water inlet 22 in a one-way manner, and the water flows out to the drainage channel, and the dirt in the water is filtered in the second filter tank 2.

[0074] Example 2

[0075] Embodiment 2 of the present invention is a further improvement on the first one-way valve 10 and the second one-way valve 20 in embodiment 1. Embodiment 2 of the present invention is as follows: the first one-way valve 10 includes a first elastic member and a first one-way cover plate 11, and the second one-way valve 20 includes a second elastic member 20 and a second one-way cover plate 11. The first elastic member is connected to the first one-way cover plate 11 to maintain a covering state with the first one-way cover plate 11, and the second elastic member 20 is connected to the second one-way cover plate 21 to maintain a covering state with the second one-way cover plate 21.

[0076] The elastic force of the first elastic member can act on the first one-way cover plate 11, thereby ensuring that the first one-way cover plate can remain in a closed state when not affected by the impact of water, thereby blocking the first water inlet 12. In addition, when the impact of water on the first one-way cover plate 11 is greater than the elastic force of the first elastic member on the first one-way cover plate, the first one-way cover plate can be opened and one-way conduction is conducted to the first water inlet 12.

[0077] The elastic force of the second elastic member 20 can act on the second one-way cover 21, thereby ensuring that the second one-way cover can remain in a closed state when not affected by the impact of water, so as to isolate the second water inlet 22; when the impact of water on the second one-way cover 21 is greater than the elastic force of the second elastic member 20 on the second one-way cover, the second one-way cover can be opened under the action of water and conduct the second water inlet 22.

[0078] Example 3

[0079] The third embodiment of the present invention is a further improvement on the first one-way valve 10 and the second one-way valve 20 in the second embodiment. In the third embodiment of the present invention, the elastic force of the first elastic member is smaller than the elastic force of the second elastic member 20 .

[0080] By controlling the elastic force of the first elastic member on the first one-way cover plate 11 to be smaller than the elastic force of the second elastic member 20 on the second one-way cover plate 21, it can further ensure that each filter chamber fully absorbs the dirt in the filtered water, and only when the filter chamber is filled with dirt or blocked to a certain extent can the next-level filter chamber be connected, thereby improving the utilization efficiency of each filter chamber and correspondingly reducing the overall blockage frequency of the filter device.

[0081] Example 4

[0082] Embodiment 4 of the present invention is a further improvement on embodiment 3. The only difference between embodiment 4 and embodiment 3 is that in embodiment 4, the filtering device also includes a third filter chamber and a third one-way valve. The third filter chamber is detachably connected to the second filter chamber 2, and the third filter chamber is provided with a third water inlet connected to the second filter chamber 2. A third one-way valve is provided in the third water inlet. The third one-way valve includes a third one-way cover and a third elastic member connected to the third one-way cover, wherein the elastic force of the third elastic member is greater than the elastic force of the second elastic member 20.

[0083] In the fourth embodiment, a handle 2 is provided on the top of the third filter chamber. When the filter device needs to be cleaned, the operator can more conveniently take the filter device out of the swimming pool robot through the handle 2.

[0084] In the filter device provided in the fourth embodiment, when the second filter chamber 2 is in a full state, the third filter chamber can be further activated to achieve the effect of reducing the clogging frequency and clogging speed of the filter device.

[0085] To sum up, the filter device provided by the present invention is provided with at least two filter chambers, and at least two filter chambers can be activated in sequence. The next filter chamber will only be activated when the previous filter chamber is filled with dirt or the previous filter chamber is blocked to a certain extent. This improves the space utilization of each filter chamber and enhances the overall anti-blocking ability of the filter device. The blocking frequency and blocking speed of the filter device are lower.

[0086] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A filtering device, characterized in that: The invention comprises a first filter chamber (1), a second filter chamber (2), a first one-way valve (10) and a second one-way valve (20); the first filter chamber (1) is provided with a first water inlet (12) which is connected to the outside, the second filter chamber (2) is provided with a second water inlet (22) which is connected to the first filter chamber (1), the first one-way valve (10) is arranged at the first water inlet (12), and the second one-way valve (20) is arranged at the second water inlet (22); wherein external water flows into the first filter chamber (1) through the first water inlet (12), and water in the first filter chamber (1) enters the second filter chamber (2) through the second water inlet (22); the first one-way valve (10) is used for unidirectionally conducting or blocking the first water inlet (12), and the second one-way valve (20) is used for unidirectionally conducting or blocking the second water inlet (22).

2. The filtering device according to claim 1, characterized in that: The first one-way valve (10) comprises a first elastic member (13) and a first one-way cover plate (11); the second one-way valve (20) comprises a second elastic member (23) and a second one-way cover plate (21); the first elastic member (13) is connected to the first one-way cover plate (11) so that the first one-way cover plate (11) can be kept in a covered state; the second elastic member (23) is connected to the second one-way cover plate (21) so that the second one-way cover plate (21) can be kept in a covered state.

3. The filtering device according to claim 2, characterized in that: The elastic force of the first elastic member (13) is smaller than the elastic force of the second elastic member (23).

4. The filtering device according to claim 1, characterized in that: The second filter bin (2) is provided with a handle (3).

5. The filtering device according to claim 1, characterized in that: The filtering device comprises at least two of the second filtering chambers (2).

6. The filtering device according to claim 1, characterized in that: It also includes a third filter bin and a third one-way valve, wherein the third filter bin is provided with a third water inlet which is connected to the second filter bin (2), and the third one-way valve is arranged in the third water inlet, and the third one-way valve is used to unilaterally guide or block the third water inlet.

7. The filtering device according to claim 1, characterized in that: The first filter chamber (1) is detachably connected to the second filter chamber (2).

8. The filtering device according to claim 7, characterized in that: The first filter chamber (1) is provided with an opening at the connection between the first filter chamber (1) and the second water inlet (22).

9. A swimming pool robot, characterized in that: A filter device comprising any one of claims 1 to 8.

10. The swimming pool robot according to claim 9, characterized in that: It also comprises a shell (4) and a water pump (5), wherein the shell (4) is provided with a water inlet (6) and a water outlet (7), a water flow channel is formed between the water inlet (6) and the water outlet (7), the filtering device is arranged in the water flow channel, and the water pump (5) is at least partially located in the water flow channel.

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