Submersible Pool Cleaning Robot

Abstract

The present invention relates to the technical field of underwater equipment, and in particular to a submersible swimming pool cleaning robot, comprising a housing and a walking assembly, wherein the front and rear ends of the housing are both provided with cleaning rollers that are transmission-connected to the walking assembly, a filter chamber is provided in the housing, a filter screen is provided on the filter chamber, the inner cavity of the filter chamber is a sewage chamber, a clean water chamber is formed between the filter chamber and the housing, a water inlet connected to the sewage chamber is provided at the bottom of the housing, a water outlet connected to the clean water chamber is provided at the top of the housing, a pump assembly is provided in the clean water chamber of the housing, a direct current channel is formed between the pump assembly and the filter chamber, a drainage assembly is provided in the direct current channel, and the drainage assembly includes two drainage plates. The present invention ensures the overall cleaning effect of the filter screen by flushing the area of ​​the filter screen facing the pump assembly and the remaining areas in stages with the assistance of the drainage plates through reverse flushing water flow, thereby ensuring the continuous cleaning of the swimming pool water quality.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater equipment, and specifically relates to a submersible 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. The pool cleaning robot cleans the swimming pool by filtering the fluid and removing foreign particles from the fluid through separation. However, the particles to be cleaned will accumulate in the filtration unit and may eventually reduce the filtration capacity of the pool cleaning robot.

[0003] The currently publicly disclosed Chinese patent with the authorization publication number CN219431470U is a pool-related platform, including a driving mechanism for moving the pool-related platform, a housing having a first fluid opening and a second fluid opening, a filtration unit including a filtration element, a fluid flow mechanism for guiding the fluid to flow through the filtration unit in a first direction during the filtration process and guiding the fluid to flow through the filtration 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 filtration unit to enter the retention unit, and is configured to substantially prevent the fluid and debris from flowing from the retention unit to the filtration unit.

[0004] According to the above patent, the water flowing reversely from the water outlet flows along the hydraulic path to the filter screen, and the water impacts the filter screen to release the intercepted dirt and debris. The released dirt and debris enter the retention base unit through the inlet of the retention unit, and the structure of the retention inlet prevents or minimizes the return of dirt from the retention unit inlet to the main filtration chamber. However, the reverse water flow is mainly concentrated in the area near the fluid flow mechanism, resulting in the parts of the filter screen far from these positions not being effectively impacted. 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 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] Aiming at the problems existing in the prior art, a submersible pool cleaning robot is provided. The present invention stages the flushing of the area of the filter screen facing the water pumping assembly and the remaining areas with the assistance of a diversion plate by the reverse flushing water flow, ensuring the overall cleaning effect of the filter screen, and thus guaranteeing the continuous cleaning of the 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 has a movable point elastically connected to the corresponding step, and each drainage plate is provided with a pressing portion capable of pressing the corresponding baffle against the sealing cushion layer to fit tightly therewith. When the two sliding plates move away from each other to open the DC channel, each baffle is in a state of outward rebound without the pressure of the pressing portion, so that the area of the filter net facing the water pump assembly can allow sewage to pass through from the inside to the outside.

[0011] Preferably, a rod capable of moving along the rotation axis direction of the movable point is provided at the position of each baffle, and a linear driver for driving the two rods to move synchronously is provided on the fixing frame. When the baffle is not affected by an external force, the rod is in a state of supporting from the inside of the baffle, so that the DC channel remains unblocked when the area of the filter net facing the water pump assembly is backwashed.

[0012] Preferably, a collection bin for collecting dirt is detachably provided at the bottom of the filter chamber. The top of the collection bin extends along its width direction and is provided with a collection port communicating with the sewage chamber. A valve flap is provided at the water inlet of the filter chamber. When the water pump assembly pumps sewage, the valve flap is in a state of opening the water inlet, and when the water pump assembly backwashes the filter net, the valve flap is in a state of closing the water inlet.

[0013] Preferably, a paddle for preventing dirt from returning from the collection bin to the sewage chamber is rotatably provided in the collection port, and a rotation driver for controlling the rotation of the paddle is provided on the collection bin.

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

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

[0016] The beneficial effects of this application compared with the prior art are:

[0017] 1. By the forward start of the water pump assembly and the coordinated operation of the traveling assembly, the present invention removes the dirt at the bottom of the pool during movement and filters the pool water through the filter net. When the filter net is clogged and needs to be cleaned, with the reverse start of the water pump assembly, a strong water flow is generated to wash the filter net.

[0018] During the process of backwashing the filter screen, the backwashing process is divided into two stages. That is, in the first stage, the area of the filter screen facing the water pump assembly is mainly cleaned. In the second stage, the drainage plate is controlled to close the direct current channel, so that the reverse water flow is evenly distributed along the drainage plate, and the remaining area of the filter screen is widely cleaned. This ensures the overall cleaning effect of the filter screen, thereby improving the filtering effect and efficiency of sewage and ensuring the continuous cleanliness of the pool water quality.

[0019] 2. The present invention controls the sliding plate and the drainage plate to move along the arc track through the drainage driver until the two sliding plates contact, so that each drainage plate is in a state of tilting towards the filter chamber, providing a guiding surface for the reverse washing water flow to disperse outward, and ensuring that the reverse washing water flow cleans the dirt on the whole filter screen.

[0020] At the same time, the drainage plate contacts the steps on both sides of the fixed frame, ensuring that the drainage plate remains stable when bearing the water flow pressure and preventing deformation. This ensures that the water flow can be evenly and stably distributed around the filter screen, achieving a comprehensive and stable cleaning effect and improving the overall cleaning effect of the filter screen.

[0021] 3. Through the cooperation of the baffle plate and the sealing cushion layer, the present invention can effectively prevent sewage from concentrating on the area of the filter screen facing the water pump assembly when the water pump assembly extracts sewage.

[0022] That is, the baffle plate remains in close contact with the sealing cushion layer under the pressure of the pressing part of the drainage plate, forming a sealing barrier, forcing the sewage to be filtered from other areas of the filter screen, ensuring the balanced use of each area of the filter screen, and improving the overall filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the submersible pool cleaning robot of the present invention Figure 1 .

[0024] Figure 2 is a three-dimensional structural schematic diagram of the submersible pool cleaning robot of the present invention Figure 2 .

[0025] Figure 3 is a partial three-dimensional structural sectional view of the submersible pool cleaning robot of the present invention Figure 1 .

[0026] Figure 4 is a partial three-dimensional structural sectional view of the submersible pool cleaning robot of the present invention Figure 2 .

[0027] Figure 5 is a plane sectional view of the submersible pool cleaning robot of the present invention.

[0028] Figure 6It is a schematic three-dimensional structure diagram of the filter chamber, water pumping assembly and water diversion assembly of the submersible pool cleaning robot of the present invention.

[0029] Figure 7 It is a schematic three-dimensional structure diagram of the water pumping assembly and water diversion assembly of the submersible pool cleaning robot of the present invention.

[0030] Figure 8 It is a schematic plan sectional view of the open state of the water diversion plate and the baffle plate of the submersible pool cleaning robot of the present invention.

[0031] Figure 9 It is a schematic plan sectional view of the closed state of the water diversion plate and the baffle plate of the submersible pool cleaning robot of the present invention.

[0032] Figure 10 It is a schematic three-dimensional sectional view of the open state of the water diversion plate and the baffle plate of the submersible pool cleaning robot of the present invention.

[0033] Figure 11 It is a schematic three-dimensional sectional view of the closed state of the water diversion plate and the baffle plate of the submersible pool cleaning robot of the present invention.

[0034] Figure 12 It is a schematic partial three-dimensional sectional view of the filter chamber and the collection chamber of the submersible pool cleaning robot of the present invention.

[0035] Figure 13 It is a schematic three-dimensional structure diagram of the traveling assembly and the cleaning roller of the submersible pool cleaning robot of the present invention.

[0036] The reference numerals in the figure are: 1, housing; 11, water inlet; 111, valve; 112, baffle; 12, water outlet; 2, traveling assembly; 21, driving wheel; 22, driven wheel; 23, driving track; 24, traveling motor; 241, driving gear; 3, cleaning roller; 31, driven gear; 4, filter chamber; 41, filter net; 42, sewage chamber; 43, clean water chamber; 44, collection chamber; 441, collection port; 442, paddle; 5, water pumping assembly; 51, impeller; 511, housing; 512, water passing port; 52, pump; 6, fixing frame; 61, arc track; 62, slide plate; 7, water diversion assembly; 71, water diversion plate; 711, step; 712, pressing part; 72, water diversion driver; 721, arc rack; 722, water diversion gear; 73, baffle; 731, rod; 74, sealing cushion layer. Detailed implementation manners

[0037] In order to further understand the features, technical means and the specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0038] See Figures 1 - 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.

[0039] 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 .

[0040] 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.

[0041] 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.

[0042] 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 .

[0043] See also Figures 6 - 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] See alsoFigures 6 - 11 As shown, on the fixing frame 6 and on both sides of the extending direction of each drainage plate 71, there is a step 711 for supporting the drainage plate 71. When the two sliding plates 62 come into contact, each drainage plate 71 comes into contact with the corresponding step 711 simultaneously, so that the drainage plate 71 remains stable when bearing the water flow pressure.

[0048] When the two sliding plates 62 slide on the arc track 61 and approach each other until they come into contact, each drainage plate 71 also extends with the movement of the sliding plate 62 and comes into contact with the steps 711 on both sides of the fixing frame 6 simultaneously.

[0049] It is ensured that when the drainage plate 71 bears the pressure of the reverse flushing water flow, it can obtain stable support through contact with the step 711, preventing deformation caused by water flow impact, thereby ensuring the accuracy and stability of water flow guidance.

[0050] See Figures 5 - 11 As shown, the drainage assembly 7 further includes two baffle plates 73 movably connected to the fixing frame 6 and a sealing cushion layer 74 arranged outside the filter bin 4. The sealing cushion layer 74 is attached to the area of the filter net 41 facing the water pumping assembly 5. When the two baffle plates 73 are in close contact with the sealing cushion layer 74, a sealing barrier is formed to block the area of the filter net 41 facing the water pumping assembly 5 from passing sewage, so that the sewage is forced to pass through the area outside the filter net 41 for filtration.

[0051] During the forward startup process of the water pumping assembly 5, it will cause the sewage to concentrate and pass through the area of the filter net 41 facing the water pumping assembly 5. Since the filtering effect of the area of the filter net 41 facing the water pumping assembly 5 is better than that of the other areas, as the sewage continuously passes through the area of the filter net 41 facing the water pumping assembly 5, the area will be severely blocked while the other areas are relatively intact.

[0052] If the sewage continuously passes through the area, it will lead to poor water filtration effect. Therefore, control the two baffle plates 73 to be in close contact with the sealing cushion layer 74, so that the area of the filter net 41 facing the water pumping assembly 5 is closed, thereby forming a sealing barrier, so that the sewage cannot pass through the sealing barrier from the inside to the outside, forcing the sewage to be filtered through the other areas of the filter net 41. It ensures the balanced use of each area of the filter net 41, thereby improving the filtering effect and efficiency of the sewage.

[0053] See Figures 6 - 11As shown, one end of each baffle plate 73 has a movable point elastically connected to the corresponding step 711. Each drainage plate 71 is provided with a pressing portion 712 that can press the corresponding baffle plate 73 against the sealing cushion layer 74 to closely fit it. When the two sliding plates 62 move away from each other to open the DC channel, each baffle plate 73 is in a state of outward rebound without the pressure of the pressing portion 712, so that the area of the filter net 41 facing the water pump assembly 5 can allow sewage to pass through from the inside to the outside.

[0054] When the two sliding plates 62 move closer to each other to close the DC channel, each drainage plate 71 presses the corresponding baffle plate 73 through the pressing portion 712. Until the two sliding plates 62 come into contact, each baffle plate 73 remains in a state of closely fitting with the sealing cushion layer 74, thus preventing a large amount of the pumped sewage from passing through the enclosed area, that is, the area facing the water pump assembly 5. Forcing the sewage to pass through the remaining areas of the filter net 41 improves the overall filtering performance of the filter net 41 for sewage.

[0055] When the two sliding plates 62 move away from each other to open the DC channel, each baffle plate 73 rebounds outward by virtue of the movable point elastically connected to the corresponding step 711 at one end without the pressure of the pressing portion 712 on the drainage plate 71, so that the baffle plate 73 no longer closely fits the sealing cushion layer 74. At this time, the area of the filter net 41 facing the water pump assembly 5 is no longer enclosed, and sewage can pass through this area from the inside to the outside for filtration.

[0056] By dividing the sewage filtration into two stages, it is ensured that during the process of the filter net 41 filtering sewage, the sewage can pass through different areas of the filter net 41 instead of concentrating on passing through the area of the filter net 41 facing the water pump assembly 5, optimizing the overall filtering effect of the filter net 41.

[0057] See Figures 6 - 8 As shown, at the position of each baffle plate 73, there is a rod 731 that can move along the rotation axis direction of the movable point. The fixed frame 6 is provided with a linear driver for driving the two rods 731 to move synchronously. When the baffle plate 73 is not subjected to external force, the rod 731 is in a state of supporting from the inner side of the baffle plate 73, so that the DC channel remains unblocked when the area of the filter net 41 facing the water pump assembly 5 is backwashed.

[0058] The linear driver is not shown in the figure.

[0059] When the baffle plate 73 is not subjected to external force, the linear driver on the fixed frame 6 drives the two rods 731 to move synchronously and adjusts their positions along the rotation axis direction of the movable point. Until the rod 731 moves to the inner side of the baffle plate 73, so that the rod 731 is in a state of supporting from the inner side of the baffle plate 73.

[0060] Through the support of the baffle 73 by the rod member 731, the area of the filter net 41 facing the water pumping assembly 5 remains unobstructed during the reverse flushing process, ensuring a smooth direct current channel. This prevents the baffle 73 from automatically contacting the sealing cushion layer 74 due to water flow impact, which would otherwise close the direct current channel. This ensures that water can flow smoothly through the area of the filter net 41 facing the water pumping assembly 5 during reverse flushing, effectively cleaning the said area of the filter net 41.

[0061] See Figure 3 , Figure 5 and Figure 12 As shown, a detachable collection bin 44 for collecting dirt is provided at the bottom of the filter chamber 4. The top of the collection bin 44 extends along its width direction and is provided with a collection port 441 communicating with the sewage chamber 42. A valve flap 111 is provided at the water inlet 11 of the filter chamber 4. When the water pumping assembly 5 pumps sewage, the valve flap 111 is in the state of opening the water inlet 11, while when the water pumping assembly 5 performs reverse flushing on the filter net 41, the valve flap 111 is in the state of closing the water inlet 11.

[0062] When the water pumping assembly 5 pumps sewage, a negative pressure is generated in the filter chamber 4. This negative pressure acts on the valve flap 111, overcoming the elasticity of the valve flap 111 and causing the valve flap 111 to automatically open the water inlet 11, allowing sewage to smoothly enter the filter chamber 4 for filtration.

[0063] When the water pumping assembly 5 performs reverse flushing operation to clean the filter net 41, the pressure in the filter chamber 4 increases, causing the valve flap 111 to return under the action of elastic force, automatically closing the water inlet 11 to prevent new sewage from flowing in. At the same time, the collection bin 44 at the bottom of the filter chamber 4 effectively collects the dirt filtered out through the collection port 441.

[0064] See Figure 3 , Figure 5 and Figure 12 As shown, a paddle 442 for preventing dirt from returning from the collection bin 44 to the sewage chamber 42 is rotatably provided in the collection port 441, and a rotary drive for controlling the rotation of the paddle 442 is provided on the collection bin 44.

[0065] The rotary drive is not shown in the figure.

[0066] When dirt enters the collection bin 44 through the collection port 441, the rotary drive controls the rotation of the paddle 442, bringing the dirt into the collection bin 44.

[0067] When the water pumping assembly 5 pumps sewage, the rotary drive stops the rotation of the paddle 442, blocking the return of the dirt in the collection bin 44 to the sewage chamber 42, effectively preventing the backflow of dirt.

[0068] See Figure 2 and Figure 5As shown in the figure, a plurality of baffles 112 for blocking large dirt from entering the sewage chamber 42 are arranged at intervals around the bottom of the housing 1 for one week around the water inlet 11.

[0069] When sewage enters the filter chamber 4 through the water inlet 11, the baffles 112 arranged at intervals around the bottom of the housing for one week around the water inlet 11 will block large dirt and prevent it from directly entering the sewage chamber 42. Effectively filter out larger impurities and prevent the water inlet 11 from being blocked.

[0070] See Figures 1 - 5 and Figure 13 As shown in the figure, the traveling assembly 2 includes two driving wheels 21 and two driven wheels 22 respectively rotatably arranged on both sides of the housing 1, and driving tracks 23 respectively sleeved on the driving wheels 21 and the driven wheels 22 on the same side. A traveling motor 24 for driving the two driving wheels 21 to rotate is arranged in the housing 1. The inner side of the driving wheel 21 is a toothed ring structure. The two ends of the output shaft of the traveling motor 24 are respectively provided with driving gears 241 meshing with the corresponding toothed ring structures. The two ends of the cleaning roller 3 located at the rear end of the housing 1 are respectively provided with driven gears 31 meshing with the corresponding toothed ring structures. The two 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.

[0071] When the traveling motor 24 is started, the driving gears 241 at both ends of its output shaft mesh with the toothed ring structures on the inner sides of the two driving wheels 21 to drive the two driving wheels 21 to rotate. The driving wheels 21 drive the driven wheels 22 to rotate synchronously through the driving tracks 23, realizing the forward or backward movement of the whole pool cleaning robot.

[0072] Since the driven gears 31 at both ends of the cleaning roller 3 located at the rear end of the housing 1 also mesh with the toothed 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 ground. In addition, the cleaning roller 3 located at the front end of the housing 1 is fixedly connected to the corresponding driven wheels 22 at both ends and rotates together with the driven wheels 22, further enhancing the cleaning effect.

[0073] Through the forward start of the water pumping assembly 5 and the coordinated work of the traveling assembly 2, the present invention efficiently removes the dirt at the bottom of the pool and filters the pool water during movement.

[0074] With the reverse start of the water pumping assembly 5, the reverse flushing water flow first concentrates on cleaning the area of the filter screen 41 facing the water pumping assembly 5, and then closes the DC channel through the diversion plate 71 and uses the diversion plate 71 to guide the water flow to be evenly distributed to widely clean the rest of the filter screen 41. Ensure the overall cleaning effect of the filter screen 41 and ensure the continuous cleaning of the pool water quality.

[0075] Meanwhile, the baffle plate 73 cooperates with the sealing cushion layer 74 to form a sealing barrier when the water pump assembly 5 starts to pump sewage forward, avoiding the sewage from concentrating on the area of the filter net 41 directly facing the water pump assembly 5, forcing the sewage to be evenly filtered from other areas, and improving the balanced use of the filter net 41 and the overall filtering effect.

[0076] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended 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); 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.

2. The submersible swimming pool cleaning robot according to claim 1, 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.

3. The submersible swimming pool cleaning robot according to claim 2, 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).

4. The submersible swimming pool cleaning robot according to claim 3, 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.

5. The submersible swimming pool cleaning robot according to claim 4, 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.

6. 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).

7. The submersible swimming pool cleaning robot according to claim 6, 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).

8. 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).

9. 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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