Submersible swimming pool cleaning robot

Abstract

The invention relates to the technical field of underwater equipment, in particular to a submersible type swimming pool cleaning robot which comprises a machine shell and a walking assembly, the front end and the rear end of the machine shell are each provided with a cleaning roller in transmission connection with the walking assembly, a filtering bin is arranged in the machine shell, a filtering net is arranged on the filtering bin, an inner cavity of the filtering bin is a sewage cavity, and the inner cavity of the filtering bin is provided with a water outlet. A clean water cavity is formed between the filtering bin and the machine shell, a water inlet communicated with the sewage cavity is formed in the bottom of the machine shell, a water outlet communicated with the clean water cavity is formed in the top of the machine shell, a water pumping assembly is arranged in the clean water cavity of the machine shell, a direct flow channel is formed between the water pumping assembly and the filtering bin, and a drainage assembly is arranged in the direct flow channel. The drainage assembly comprises two drainage plates. Reverse flushing water flow flushes the area, right opposite to the water pumping assembly, of the filter screen and other areas in a staged mode under the assistance of the drainage plate, the overall cleaning effect of the filter screen is guaranteed, and continuous cleaning of water in a swimming pool is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of underwater equipment, in particular to a submersible swimming pool cleaning robot. Background Art

[0002] Traditional pool cleaning methods mainly rely on manual cleaning or fixed automatic filtration systems, while submersible pool cleaning robots are devices that can operate autonomously in water. Pool cleaning robots clean swimming pools by filtering fluids and removing foreign particles from the fluids by separation. However, the cleaned particles will accumulate in the filtration unit and may eventually reduce the filtration capacity of the pool cleaning robot.

[0003] The authorization publication number of the currently disclosed Chinese patent is CN219431470U. A pool-related platform includes a driving mechanism for moving the pool-related platform, a shell having a first fluid opening and a second fluid opening, a filter unit including a filter element, a fluid flow mechanism for guiding the fluid to flow through the filter unit in a first direction during the filtration process and guiding the fluid to flow through the filter element in another direction during the backwashing process; a retention unit and a flow control unit, including a flow control element and an inlet that remains open during the filtration process and the backwashing process; wherein the flow control unit is configured to allow debris and fluid from the filter unit to enter the retention unit, and is configured to substantially prevent fluid and debris from flowing from the retention unit to the filter unit.

[0004] According to the above patent, the water flows in the reverse direction from the water outlet along the hydraulic path to the filter screen, and the water impacts the filter screen to release the trapped dirt and debris. The released dirt and debris enter the interception base unit through the interception unit inlet, and the structure of the interception inlet prevents or minimizes the dirt from returning to the main filter chamber from the interception unit inlet. However, the reverse water flow is mainly concentrated in the area close to the fluid flow mechanism, resulting in the inability to effectively impact the filter screen parts away from these positions. As a result, the areas that are not fully impacted are prone to residual dirt and debris, reducing the overall cleaning effect. Therefore, there is a need for a swimming pool cleaning robot that can more effectively guide the reverse water flow to ensure that all parts of the filter screen can be cleaned. Summary of the invention

[0005] In view of the problems existing in the prior art, a submersible swimming pool cleaning robot is provided. The present invention uses a reverse flushing water flow to flush the area of ​​the filter screen facing the water pump assembly and the remaining areas in stages with the assistance of a drainage plate, thereby ensuring the overall cleaning effect of the filter screen and further ensuring the continuous cleanliness of the swimming pool water quality.

[0006] In order to solve the problems of the prior art, the present invention provides a submersible swimming pool cleaning robot, comprising a housing and a walking assembly for driving the housing to move in water, the front and rear ends of the housing are both provided with cleaning rollers that are transmission-connected to the walking assembly, a detachably connected filter bin is provided in the housing, a filter screen surrounding the filter bin is provided on the filter bin, the inner cavity of the filter bin is a sewage cavity, a clean water cavity is formed between the filter bin and the housing, a water inlet extending along the width direction of the housing and communicating with the sewage cavity is provided at the bottom of the housing, a water outlet communicating with the clean water cavity is provided at the top of the housing, and a filter is provided in the clean water cavity of the housing for cleaning. A water pump assembly is used to extract sewage from the inside to the outside through the filter or to guide clean water from the outside to the inside to flush the filter. A direct current channel is formed between the water pump assembly and the filter chamber. A fixed frame and a drainage assembly arranged on the fixed frame are provided in the direct current channel. The drainage assembly includes two drainage plates and a drainage driver for controlling the activity of each drainage plate. When the two drainage plates close the direct current channel, the reverse flushing water flows along the two drainage plates in a state of uniformly flowing around the filter. When the two drainage plates open the direct current channel, the reverse flushing water flows in a state of directly impacting the area of ​​the filter that is opposite to the water pump assembly.

[0007] Preferably, an arc track is provided at the top and bottom of the fixed frame around the rotation axis of the water pump assembly, and two slides are slidably provided between the two arc tracks and are transmission-connected to the drainage drive. Each of the slides has a drainage plate extending outward. When the two slides are close to each other to close the direct current channel, each drainage plate is in a state of being inclined toward the filter bin, so that the drainage plate provides an outwardly dispersed guiding surface for the reverse flushing water flow.

[0008] Preferably, a step for supporting the guide plate is provided on both sides of the fixing frame and in the extension direction of each guide plate. When the two slide plates are in contact, each guide plate is in contact with the corresponding step at the same time, so that the guide plate remains stable when subjected to water flow pressure.

[0009] Preferably, the drainage assembly also includes two baffles movably connected to the fixed frame and a sealing gasket layer arranged on the outside of the filter bin, and the sealing gasket layer fits the area of ​​the filter screen facing the water pumping assembly. When the two baffles are in close contact with the sealing gasket layer, a sealing barrier is formed to prevent sewage from passing through the area of ​​the filter screen facing the water pumping assembly, so that the sewage is forced to be filtered through the area outside the filter screen.

[0010] Preferably, one end of each baffle plate has an active point elastically connected to the corresponding step, and each drainage plate is provided with a pressing portion capable of squeezing the corresponding baffle plate onto the sealing pad layer and fitting tightly therewith. When the two slides move away from each other to open the direct current channel, each baffle plate is in a state of rebounding outward without being subjected to the pressure of the pressing portion, so that the area of ​​the filter screen facing the water pump assembly can allow sewage to pass from the inside out.

[0011] Preferably, a rod capable of moving along the rotation axis direction of the active point is provided at the position of each baffle plate, and a linear drive for driving the two rods to move synchronously is provided on the fixed frame. When the baffle plate is not subjected to external force, the rod is in a state of supporting from the inside of the baffle plate, so that the direct current channel remains unobstructed when the area of ​​the filter screen facing the water pump assembly is reversely flushed.

[0012] Preferably, a detachable collecting bin for collecting dirt is provided at the bottom of the filter bin, a collecting port is extended along its width direction and communicated with the sewage chamber at the top of the collecting bin, a valve is provided on the water inlet of the filter bin, when the water pumping assembly extracts sewage, the valve is in a state of opening the water inlet, and when the water pumping assembly backwashes the filter screen, the valve is in a state of closing the water inlet.

[0013] Preferably, a paddle is rotatably provided in the collecting port to prevent dirt from returning from the collecting bin to the sewage chamber, and a rotary driver is provided on the collecting bin to control the rotation of the paddle.

[0014] Preferably, a plurality of baffles are arranged at intervals around the water inlet at the bottom of the housing to prevent large pieces of dirt from entering the sewage chamber.

[0015] Preferably, the walking assembly includes two driving wheels and a driven wheel which are rotatably arranged on both sides of the casing and transmission tracks which are respectively sleeved on the driving wheel and the driven wheel on the same side. A walking motor for driving the two driving wheels to rotate is provided in the casing. The inner side of the driving wheel is a gear ring structure. Both ends of the output shaft of the walking motor are respectively provided with driving gears meshing with the corresponding gear ring structure. Both ends of the cleaning roller located at the rear end of the casing are respectively provided with driven gears meshing with the corresponding gear ring structure. Both ends of the cleaning roller located at the front end of the casing are respectively fixedly connected to the corresponding driven wheels.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention removes dirt from the pool bottom and filters the pool water through the filter screen by the forward start of the water pump assembly and the coordinated work of the walking assembly. When the filter screen is clogged and needs to be cleaned, the reverse start of the water pump assembly generates a strong water flow to flush the filter screen.

[0017] In the process of backwashing the filter, the flushing process is divided into two stages, namely, the first stage mainly cleans the area of ​​the filter facing the pump assembly, and the second stage controls the drainage plate to close the direct current channel, so that the reverse water flow is evenly distributed along the drainage plate, and the rest of the filter area is widely cleaned. The overall cleaning effect of the filter is ensured, thereby improving the filtration effect and efficiency of sewage and ensuring the continuous cleanliness of the swimming pool water quality.

[0018] 2. The present invention controls the slide plate and the drainage plate to move along the arc track until the two slide plates are in contact, so that each drainage plate is in a state of being inclined toward the filter bin, providing an outwardly dispersed guiding surface for the backwashing water flow, ensuring that the backwashing water flow cleans the dirt on the entire filter screen.

[0019] At the same time, the guide plate contacts the steps on both sides of the fixing frame, ensuring that the guide plate remains stable when subjected to water pressure to prevent deformation. This ensures that the water flow can be evenly and stably distributed around the filter, achieving a comprehensive and stable cleaning effect, and improving the overall cleaning effect of the filter.

[0020] 3. The present invention can effectively prevent sewage from being concentrated in the area of ​​the filter screen facing the water pumping assembly when the water pumping assembly extracts sewage through the cooperation of the baffle plate and the sealing gasket layer.

[0021] That is, the baffle plate remains in close contact with the sealing gasket layer under the pressure of the pressure portion of the drainage plate, forming a sealing barrier, forcing the sewage to be filtered from other areas of the filter net, ensuring the balanced use of various areas of the filter net and improving the overall filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the submersible pool cleaning robot of the present invention is shown in FIG. Figure 1 .

[0023] Figure 2 The three-dimensional structure of the submersible pool cleaning robot of the present invention is shown in FIG. Figure 2 .

[0024] Figure 3 This is a partial three-dimensional structural section of the submersible swimming pool cleaning robot of the present invention. Figure 1 .

[0025] Figure 4 This is a partial three-dimensional structural section of the submersible swimming pool cleaning robot of the present invention. Figure 2 .

[0026] Figure 5 It is a plan cross-sectional view of the submersible swimming pool cleaning robot of the present invention.

[0027] Figure 6It is a three-dimensional structural schematic diagram of the filter compartment, water pump assembly and drainage assembly of the submersible swimming pool cleaning robot of the present invention.

[0028] Figure 7 It is a three-dimensional structural schematic diagram of a water pump assembly and a drainage assembly of a submersible swimming pool cleaning robot of the present invention.

[0029] Figure 8 It is a planar cross-sectional view of the submersible swimming pool cleaning robot of the present invention with the guide plate and the shielding plate in an open state.

[0030] Fig. 9 It is a planar cross-sectional view of the submersible swimming pool cleaning robot of the present invention in a closed state of the guide plate and the shielding plate.

[0031] Fig.10 It is a three-dimensional structural cross-sectional view of the submersible swimming pool cleaning robot of the present invention with the drainage plate and the shielding plate in an open state.

[0032] Fig.11 It is a three-dimensional structural cross-sectional view of the submersible swimming pool cleaning robot of the present invention in a closed state of the drainage plate and the shielding plate.

[0033] Fig.12 It is a partial three-dimensional structural cross-sectional view of the filtering chamber and the collecting chamber of the submersible swimming pool cleaning robot of the present invention.

[0034] Fig.13 It is a three-dimensional structural schematic diagram of the walking assembly and the cleaning roller of the submersible swimming pool cleaning robot of the present invention.

[0035] The numbers in the figure are: 1, housing; 11, water inlet; 111, valve; 112, baffle; 12, water outlet; 2, walking assembly; 21, driving wheel; 22, driven wheel; 23, transmission track; 24, walking motor; 241, driving gear; 3, cleaning roller; 31, driven gear; 4, filter chamber; 41, filter screen; 42, sewage chamber; 43, clean water chamber; 44, collection chamber; 441, collection port ; 442, blades; 5, water pump assembly; 51, impeller; 511, cover; 512, water inlet; 52, pump; 6, fixing frame; 61, arc track; 62, slide plate; 7, drainage assembly; 71, drainage plate; 711, step; 712, pressing part; 72, drainage drive; 721, arc rack; 722, drainage gear; 73, baffle plate; 731, rod; 74, sealing gasket. DETAILED DESCRIPTION

[0036] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] See also Figure 1-Figure 11As shown, a submersible swimming pool cleaning robot comprises a housing 1 and a walking assembly 2 for driving the housing 1 to move in water, the front and rear ends of the housing 1 are both provided with cleaning rollers 3 which are transmission-connected to the walking assembly 2, a detachably connected filter bin 4 is provided in the housing 1, a filter screen 41 surrounding the filter bin 4 is provided on the filter bin 4, the inner cavity of the filter bin 4 is a sewage cavity 42, a clean water cavity 43 is formed between the filter bin 4 and the housing 1, a water inlet 11 extending along the width direction thereof and communicating with the sewage cavity 42 is provided at the bottom of the housing 1, a water outlet 12 communicating with the clean water cavity 43 is provided at the top of the housing 1, and a filter for cleaning the clean water cavity 43 from the inside to the outside is provided in the clean water cavity 43 of the housing 1. A pump assembly 5 is used to extract sewage through the filter 41 or guide clean water from the outside to the inside to flush the filter 41. A direct current channel is formed between the pump assembly 5 and the filter chamber 4. A fixing frame 6 and a drainage assembly 7 arranged on the fixing frame 6 are provided in the direct current channel. The drainage assembly 7 includes two drainage plates 71 and a drainage driver 72 for controlling the movement of each drainage plate 71. When the two drainage plates 71 close the direct current channel, the reverse flushing water flows along the two drainage plates 71 in a state of uniformly flowing around the filter 41. When the two drainage plates 71 open the direct current channel, the reverse flushing water flows in a state of directly impacting the area of ​​the filter 41 facing the pump assembly 5.

[0038] The water pump assembly 5 is composed of an impeller 51 and a pump 52 . A cover 511 for accommodating the impeller 51 is provided in the casing 1 . A water inlet 512 is provided in the cover 511 .

[0039] When the submersible pool cleaning robot filters the pool, the pump assembly 5 is started, that is, the pump 52 drives the impeller 51 to rotate at high speed in the housing 511, thereby guiding the water flow. During this process, the walking assembly 2 is started at the same time, and as the housing 1 moves, the cleaning roller 3 rotates synchronously to remove the dirt on the bottom of the pool. During the movement, the water inlet 11 at the bottom of the housing 1 begins to absorb the pool water containing impurities into the sewage chamber 42 of the filter chamber 4, and the particles are intercepted by the filter screen 41 surrounding the filter chamber 4. The water passing through the filter screen 41 enters the clean water chamber 43. As the pump assembly 5 continues to operate, the filtered clean water is discharged back into the swimming pool through the water outlet 12 at the top of the housing 1, forming a cycle.

[0040] When the filter screen 41 is clogged and the water filtering effect is poor, the pump assembly 5 is started in reverse at intervals, and the pump assembly 5 is started in reverse so that the water flow flushes the filter screen 41 from the outside, wherein most of the water flow directly impacts the area facing the filter screen 41 through the direct current channel, and the area where more dirt is trapped, that is, the area of ​​the filter screen 41 facing the pump assembly 5 is flushed from the outside to the inside. Less water flow impacts the rest of the filter screen 41. After the area of ​​the filter screen 41 facing the pump assembly 5 is cleaned, the drainage driver 72 is started to control the two drainage plates 71 to close the direct current channel, and the reverse flushing water flow does not flush the area of ​​the filter screen 41 facing the pump assembly 5, but forces the water flow to flow evenly around the filter screen 41 along the drainage plate 71. Thus, the filter screen 41 is fully cleaned, ensuring the effective cleaning of the filter screen 41 as a whole, thereby improving the sewage filtering effect of the filter screen 41.

[0041] When the swimming pool is cleaned, the operator can remove the filter chamber 4 from the housing 1 to clean or replace the filter screen 41 and remove dirt from the filter chamber 4 .

[0042] See also Figure 6-Figure 11 As shown, an arc track 61 is provided at the top and bottom of the fixing frame 6 around the rotation axis of the water pump assembly 5, and two slide plates 62 are slidably provided between the two arc tracks 61 and are transmission-connected to the drainage driver 72. Each of the slide plates 62 has a drainage plate 71 extending outward. When the two slide plates 62 are close to each other to close the direct current channel, each drainage plate 71 is in a state of being inclined toward the filter bin 4, so that the drainage plate 71 provides an outwardly dispersed guiding surface for the reverse flushing water flow.

[0043] The drainage driver 72 has an arc-shaped rack 721 fixed to the slide plate 62 and a drainage gear 722 meshing therewith. The arc-shaped rack 721 is coaxial with the arc-shaped track 61. The fixed frame 6 is provided with a drainage motor for driving the drainage gear 722 to rotate. The drainage motor is not shown in the figure.

[0044] When the two slides 62 approach each other to close the DC channel under the action of the drainage driver 72, the drainage gear 722 is driven to rotate by the drainage motor. Since the arc rack 721 is meshed with the drainage gear 722 and the arc rack 721 is coaxial with the arc track 61, the slide 62 and the drainage plate 71 are driven to move along the direction of the arc track 61.

[0045] Until the two slide plates 62 come into contact, each guide plate 71 is in a state of being inclined toward the filter chamber 4, thereby providing a guiding surface for the backwashing water flow to disperse outwards, ensuring that the water flow can be evenly distributed around the filter screen 41 to achieve comprehensive cleaning.

[0046] See also Figure 6-Figure 11 As shown, a step 711 for supporting the guide plate 71 is provided on the fixing frame 6 and on both sides of the extension direction of each guide plate 71. When the two slide plates 62 are in contact, each guide plate 71 is in contact with the corresponding step 711 at the same time, so that the guide plate 71 remains stable when subjected to water flow pressure.

[0047] When the two slide plates 62 slide on the arc track 61 and approach each other until they come into contact, each guide plate 71 also extends along with the movement of the slide plate 62 and comes into contact with the steps 711 on both sides of the fixing frame 6 at the same time.

[0048] It ensures that when the guide plate 71 is subjected to the pressure of the reverse flushing water flow, it can obtain stable support through contact with the step 711, preventing deformation caused by the impact of the water flow, thereby ensuring the accuracy and stability of the water flow guidance.

[0049] See also Figure 5-Figure 11 As shown, the drainage assembly 7 also includes two baffles 73 movably connected to the fixing frame 6 and a sealing gasket layer 74 arranged on the outside of the filter chamber 4, and the sealing gasket layer 74 is in contact with the area of ​​the filter screen 41 facing the water pumping assembly 5. When the two baffles 73 are in close contact with the sealing gasket layer 74, a sealing barrier is formed to prevent sewage from passing through the area of ​​the filter screen 41 facing the water pumping assembly 5, so that the sewage is forced to be filtered through the area outside the filter screen 41.

[0050] During the forward start-up process of the water pump assembly 5, the sewage will be concentrated through the area of ​​the filter screen 41 facing the water pump assembly 5. Since the filtering effect of the area of ​​the filter screen 41 facing the water pump assembly 5 is better than that of the other areas, as the sewage continues to pass through the area of ​​the filter screen 41 facing the water pump assembly 5, the area will be seriously blocked while the other areas are relatively intact.

[0051] If sewage continues to pass through the area, the water filtering effect will be poor. Therefore, the two shielding plates 73 are controlled to fit tightly with the sealing pad layer 74, so that the area of ​​the filter screen 41 facing the water pump assembly 5 is closed, thereby forming a sealing barrier, so that sewage cannot pass through the sealing barrier from the inside to the outside, forcing the sewage to be filtered from the remaining areas of the filter screen 41. The balanced use of each area of ​​the filter screen 41 is guaranteed, thereby improving the filtering effect and efficiency of the sewage.

[0052] See also Figure 6-Figure 11As shown, one end of each baffle plate 73 has an active point elastically connected to the corresponding step 711, and each guide plate 71 is provided with a pressing portion 712 that can squeeze the corresponding baffle plate 73 onto the sealing pad layer 74 and fit closely with it. When the two slides 62 move away from each other to open the direct current channel, each baffle plate 73 is in an outward rebound state without being subjected to the pressure of the pressing portion 712, so that the area of ​​the filter screen 41 facing the water pump assembly 5 can allow sewage to pass from the inside to the outside.

[0053] When the two slide plates 62 are close to each other to close the direct current channel, each guide plate 71 applies pressure to the corresponding shielding plate 73 through the pressing portion 712 until the two slide plates 62 are in contact, and each shielding plate 73 is kept in a tightly fitted state with the sealing pad layer 74, thereby preventing a large amount of extracted sewage from passing through the closed area, that is, the area facing the pump assembly 5. The sewage is forced to pass through the remaining area of ​​the filter screen 41, thereby improving the overall filtering performance of the filter screen 41 for sewage.

[0054] When the two slide plates 62 move away from each other to open the direct flow channel, each shielding plate 73, without being subjected to the pressure of the pressing portion 712 on the guide plate 71, rebounds outwards at the active point where one end of the shielding plate 73 is elastically connected to the corresponding step 711, so that the shielding plate 73 is no longer tightly attached to the sealing gasket layer 74. At this time, the area of ​​the filter screen 41 facing the water pump assembly 5 is no longer closed, and sewage can be filtered from the inside out through the area.

[0055] By dividing the sewage filtration into two stages, it is ensured that during the process of sewage filtration by the filter net 41, the sewage can pass through different areas of the filter net 41, rather than concentrating the sewage through the area of ​​the filter net 41 facing the water pump assembly 5, thereby optimizing the overall filtration effect of the filter net 41.

[0056] See also Figure 6-Figure 8 As shown, a rod 731 capable of moving along the rotation axis direction of the active point is provided at the position of each baffle plate 73, and a linear driver for driving the two rods 731 to move synchronously is provided on the fixed frame 6. When the baffle plate 73 is not subjected to external force, the rod 731 is in a state of being supported from the inner side of the baffle plate 73, so that the direct current channel remains unobstructed when the area of ​​the filter screen 41 facing the water pump assembly 5 is reversely flushed.

[0057] The linear drive is not shown in the figures.

[0058] When the shielding plate 73 is not acted upon by external force, the linear drive on the fixing frame 6 drives the two rods 731 to move synchronously and adjust the position along the rotation axis direction of the active point until the rods 731 move to the inner side of the shielding plate 73, so that the rods 731 are in a state of supporting from the inner side of the shielding plate 73.

[0059] The rod 731 supports the shielding plate 73, so that the area of ​​the filter screen 41 facing the water pump assembly 5 keeps the direct current passage unobstructed during the backwashing process. The shielding plate 73 is prevented from automatically contacting the sealing pad layer 74 due to the impact of the water flow, resulting in the direct current passage being closed, ensuring that the water flow can pass smoothly when the area of ​​the filter screen 41 facing the water pump assembly 5 is backwashed, ensuring that the area of ​​the filter screen 41 is effectively cleaned.

[0060] See also Figure 3 , Figure 5 and Fig.12 As shown, the bottom of the filter bin 4 is detachably provided with a collecting bin 44 for collecting dirt, the top of the collecting bin 44 extends along its width direction and is connected to a collecting port 441 of the sewage chamber 42, and a valve 111 is provided on the water inlet 11 of the filter bin 4. When the pump assembly 5 extracts sewage, the valve 111 is in a state of opening the water inlet 11, and when the pump assembly 5 backwashes the filter screen 41, the valve 111 is in a state of closing the water inlet 11.

[0061] When the water pump assembly 5 extracts sewage, negative pressure will be generated in the filter chamber 4, and the negative pressure will act on the valve 111, overcoming the elasticity of the valve 111, so that the valve 111 automatically opens the water inlet 11, allowing the sewage to smoothly enter the filter chamber 4 for filtration.

[0062] When the pump assembly 5 performs a backwashing operation to clean the filter screen 41, the pressure in the filter chamber 4 increases, causing the valve 111 to return to its original position under the action of elastic force, so that the valve 111 automatically closes the water inlet 11 to prevent new sewage from flowing in. At the same time, the collection chamber 44 at the bottom of the filter chamber 4 effectively collects the filtered dirt through the collection port 441.

[0063] See also Figure 3 , Figure 5 and Fig.12 As shown, a paddle 442 is rotatably provided in the collection port 441 for preventing dirt from returning from the collection bin 44 to the sewage chamber 42 , and a rotary driver is provided on the collection bin 44 for controlling the rotation of the paddle 442 .

[0064] The rotary drive is not shown in the figure.

[0065] When dirt enters the collecting bin 44 through the collecting opening 441 , the rotary driver controls the paddle 442 to rotate, so that the dirt is brought into the collecting bin 44 .

[0066] When the pump assembly 5 extracts sewage, the rotary driver stops the blade 442 from rotating, blocking the dirt in the collection bin 44 from returning to the sewage chamber 42, thereby effectively preventing the backflow of the dirt.

[0067] See also Figure 2 and Figure 5As shown, a plurality of baffles 112 are arranged at intervals around the water inlet 11 at the bottom of the housing 1 to prevent large pieces of dirt from entering the sewage chamber 42 .

[0068] When sewage enters the filter chamber 4 through the water inlet 11, the baffles 112 arranged at intervals around the water inlet 11 at the bottom of the shell will block large pieces of dirt and prevent them from directly entering the sewage chamber 42. Large impurities are effectively filtered out to prevent the water inlet 11 from being blocked.

[0069] See also Figure 1-Figure 5 and Fig.13 As shown, the walking assembly 2 includes two driving wheels 21 and driven wheels 22 which are rotatably arranged on both sides of the casing 1, and a transmission track 23 which is respectively sleeved on the driving wheel 21 and the driven wheel 22 on the same side. A walking motor 24 for driving the two driving wheels 21 to rotate is provided in the casing 1. The inner side of the driving wheel 21 is a gear ring structure. Both ends of the output shaft of the walking motor 24 are respectively provided with driving gears 241 meshing with the corresponding gear ring structure. Both ends of the cleaning roller 3 located at the rear end of the casing 1 are respectively provided with driven gears 31 meshing with the corresponding gear ring structure. Both ends of the cleaning roller 3 located at the front end of the casing 1 are respectively fixedly connected with the corresponding driven wheels 22.

[0070] When the travel motor 24 is started, the driving gears 241 at both ends of its output shaft mesh with the gear ring structures inside the driving wheels 21 on both sides to drive the two driving wheels 21 to rotate. The driving wheel 21 drives the driven wheel 22 to rotate synchronously through the transmission track 23, realizing the forward or backward movement of the pool cleaning robot as a whole.

[0071] Since the driven gears 31 at both ends of the cleaning roller 3 at the rear end of the housing 1 are also meshed with the gear ring structure, the cleaning roller 3 can rotate with the rotation of the driving wheel 21, ensuring that the cleaning roller 3 can effectively clean the floor. In addition, the cleaning roller 3 at the front end of the housing 1 is fixedly connected to the corresponding driven wheel 22 through its two ends, and rotates with the driven wheel 22, further enhancing the cleaning effect.

[0072] The present invention can effectively remove dirt on the bottom of the pool and filter the pool water during movement by the forward start of the water pump assembly 5 and the coordinated work of the walking assembly 2.

[0073] As the pump assembly 5 is started in reverse, the reverse flushing water flow first concentrates on cleaning the area of ​​the filter 41 facing the pump assembly 5, and then closes the direct flow channel through the guide plate 71 and uses the guide plate 71 to guide the water flow to be evenly distributed, widely cleaning the rest of the filter 41. The overall cleaning effect of the filter 41 is ensured, and the continuous cleaning of the swimming pool water quality is guaranteed.

[0074] At the same time, the baffle plate 73 cooperates with the sealing gasket layer 74 to form a sealing barrier when the pump assembly 5 is started in the forward direction to extract sewage, thereby preventing sewage from being concentrated in the area of ​​the filter screen 41 facing the pump assembly 5, forcing the sewage to be evenly filtered from other areas, thereby improving the balanced use of the filter screen 41 and the overall filtering effect.

[0075] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A submersible swimming pool cleaning robot, comprising a housing (1) and a walking assembly (2) for driving the housing (1) to move in water, wherein the front and rear ends of the housing (1) are both provided with cleaning rollers (3) which are transmission-connected to the walking assembly (2); It is characterized in that The housing (1) is provided with a detachably connected filter chamber (4), the filter chamber (4) is provided with a filter screen (41) surrounding the filter chamber (4), the inner cavity of the filter chamber (4) is a sewage chamber (42), a clean water chamber (43) is formed between the filter chamber (4) and the housing (1), the bottom of the housing (1) is provided with a water inlet (11) extending in the width direction thereof and communicating with the sewage chamber (42), the top of the housing (1) is provided with a water outlet (12) communicating with the clean water chamber (43), and the clean water chamber (43) of the housing (1) is provided with a pump assembly (5) for extracting sewage from the inside to the outside to pass through the filter screen (41) or for guiding clean water from the outside to the inside to wash the filter screen (41); A direct current channel is formed between the water pump assembly (5) and the filter chamber (4), wherein a fixing frame (6) and a drainage assembly (7) arranged on the fixing frame (6) are provided in the direct current channel, wherein the drainage assembly (7) comprises two drainage plates (71) and a drainage driver (72) for controlling the movement of each drainage plate (71); when the two drainage plates (71) close the direct current channel, the reverse flushing water flows along the two drainage plates (71) in a state of uniformly flowing around the filter screen (41); and when the two drainage plates (71) open the direct current channel, the reverse flushing water flows in a state of directly impacting the area of ​​the filter screen (41) facing the water pump assembly (5).

2. The submersible swimming pool cleaning robot according to claim 1, characterized in that: An arc track (61) is provided at the top and bottom of the fixing frame (6) around the rotation axis of the water pump assembly (5); two slide plates (62) are slidably provided between the two arc tracks (61) and are transmission-connected to a drainage driver (72); each of the slide plates (62) has a drainage plate (71) extending outward; when the two slide plates (62) are brought close to each other to close the direct current channel, each drainage plate (71) is in a state of being inclined toward the filter chamber (4), so that the drainage plate (71) provides a guiding surface for outward dispersion of the reverse flushing water flow.

3. The submersible swimming pool cleaning robot according to claim 2, characterized in that: A step (711) for supporting the guide plate (71) is provided on both sides of the fixing frame (6) and located in the extension direction of each guide plate (71); when the two slide plates (62) are in contact, each guide plate (71) is in contact with the corresponding step (711) at the same time, so that the guide plate (71) remains stable when subjected to water flow pressure.

4. The submersible swimming pool cleaning robot according to claim 3, characterized in that: The drainage assembly (7) further comprises two shielding plates (73) movably connected to the fixing frame (6) and a sealing gasket layer (74) arranged on the outside of the filter chamber (4); the sealing gasket layer (74) is in contact with the area of ​​the filter screen (41) facing the water pump assembly (5); when the two shielding plates (73) are in close contact with the sealing gasket layer (74), a sealing barrier is formed to prevent sewage from passing through the area of ​​the filter screen (41) facing the water pump assembly (5), so that the sewage is forced to be filtered through the area outside the filter screen (41).

5. The submersible swimming pool cleaning robot according to claim 4, characterized in that: One end of each shielding plate (73) has an active point elastically connected to the corresponding step (711), and each drainage plate (71) is provided with a pressing portion (712) capable of pressing the corresponding shielding plate (73) onto the sealing cushion layer (74) to fit tightly therewith; when the two slide plates (62) move away from each other to open the direct flow channel, each shielding plate (73) is in a state of rebounding outwards without being subjected to the pressure of the pressing portion (712), so that the area of ​​the filter screen (41) facing the water pump assembly (5) can allow sewage to pass from the inside to the outside.

6. The submersible swimming pool cleaning robot according to claim 5, characterized in that: A rod (731) capable of moving along the rotation axis direction of the active point is provided at the position of each baffle plate (73), and a linear drive for driving the two rods (731) to move synchronously is provided on the fixed frame (6). When the baffle plate (73) is not subjected to an external force, the rod (731) is in a state of supporting from the inner side of the baffle plate (73), so that the direct current channel is kept unobstructed when the area of ​​the filter screen (41) facing the water pump assembly (5) is reversely flushed.

7. The submersible swimming pool cleaning robot according to claim 1, characterized in that: The bottom of the filter bin (4) is detachably provided with a collection bin (44) for collecting dirt, the top of the collection bin (44) extending in the width direction thereof and having a collection port (441) in communication with the sewage chamber (42), the water inlet (11) of the filter bin (4) being provided with a valve (111), when the pump assembly (5) extracts sewage, the valve (111) is in a state of opening the water inlet (11), and when the pump assembly (5) backwashes the filter screen (41), the valve (111) is in a state of closing the water inlet (11).

8. The submersible swimming pool cleaning robot according to claim 7, characterized in that: A paddle (442) is rotatably disposed in the collection port (441) for preventing dirt from returning from the collection bin (44) to the sewage chamber (42), and a rotary driver for controlling the rotation of the paddle (442) is disposed on the collection bin (44).

9. The submersible swimming pool cleaning robot according to claim 1, characterized in that: A plurality of baffles (112) are arranged at intervals around the water inlet (11) at the bottom of the housing (1) to prevent large pieces of dirt from entering the sewage chamber (42).

10. The submersible swimming pool cleaning robot according to claim 1, characterized in that: The travel assembly (2) comprises two driving wheels (21) and driven wheels (22) which are rotatably arranged on two sides of the housing (1) and a transmission track (23) which is respectively sleeved on the driving wheels (21) and the driven wheels (22) on the same side. A travel motor (24) is provided in the housing (1) for driving the two driving wheels (21) to rotate. The inner side of the driving wheels (21) is a gear ring structure. Both ends of the output shaft of the travel motor (24) are respectively provided with driving gears (241) which mesh with the corresponding gear ring structure. Both ends of the cleaning roller (3) located at the rear end of the housing (1) are respectively provided with driven gears (31) which mesh with the corresponding gear ring structure. Both ends of the cleaning roller (3) located at the front end of the housing (1) are respectively fixedly connected to the corresponding driven wheels (22).

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