Decontamination mechanism and swimming pool cleaning robot

Abstract

The invention relates to the technical field of swimming pool cleaning equipment, in particular to a decontamination mechanism and a swimming pool cleaning robot. The decontamination mechanism comprises a machine shell, a detachable filter box is arranged in the machine shell, a filter cavity and a clear water cavity are divided by a side wall filter screen, a bottom water inlet is connected with the filter cavity, and a top water outlet is communicated with the clear water cavity; the cleaning rollers at the front end and the rear end are in linkage with the walking driving assembly; a water inlet is provided with a water inlet one-way valve to control sewage to enter the box; a sewage discharging one-way valve is arranged at a sewage discharging opening in the bottom of the filtering box; a detachable collecting box in the machine shell and the sewage discharging opening form a sewage discharging channel; the filter box can be backwashed when water is pumped reversely, and the sewage pumping and squeezing assembly can also efficiently squeeze water of the sewage, so that the sewage is compacted and then accurately conveyed to the collecting box, and blockage is prevented.

Description

Technical Field

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

[0002] As a specific place for swimming, swimming pools will inevitably be mixed with various impurities during daily operation and use, such as garbage debris, floating algae, microbial bacteria and other pollutants. Given that the sanitary condition of the swimming pool water environment is directly related to the health and experience of users, regular and standardized cleaning of the swimming pool is a key link in the swimming pool operation and maintenance management process.

[0003] Traditional swimming pool cleaning methods rely on manual operations, and workers need to invest a lot of time and physical effort to complete a series of complicated processes such as pool bottom salvage, pool wall wiping, and water vacuuming. With the vigorous development of automation and intelligent technology, swimming pool cleaning robots have emerged, bringing innovative solutions to the field of swimming pool cleaning. The main body of this type of robot is composed of a special shell, in which a water pump and a filter mechanism are precisely assembled. The two work together to form the core power and purification system for swimming pool cleaning. Specifically, when the water pump is started, it uses strong suction to draw the water in the swimming pool containing all kinds of dirt into the shell; then, the filter mechanism uses a fine filter to intercept and capture the sucked dirt, so that it remains in the shell, and the purified water is discharged from the specific drain port of the shell, thereby achieving the basic process of swimming pool cleaning.

[0004] However, a review of the technical architecture of current pool cleaning robots still reveals several defects that need to be overcome. In the actual cleaning process, the dirt left in the shell, along with the accumulation of operation time, can easily cause the filter to become clogged. Once clogged, the suction of the water pump will drop significantly, causing the robot's cleaning efficiency to be greatly reduced, and it will be unable to maintain an efficient and stable cleaning state. What is particularly critical is that most pool cleaning robots on the market currently lack a self-cleaning function module, which means that when the filter is clogged, manual intervention must be used to frequently disassemble the equipment and clean and dredge the filter, which greatly increases the labor cost and the complexity of equipment maintenance, ultimately resulting in a poor user experience and limiting the convenience and practicality of the product.

[0005] Chinese patent publication number CN115807573A discloses a swimming pool cleaning robot with a filter anti-clogging function, including a shell, a filtering mechanism is arranged inside the shell, and a water inlet bin and a water pump bin are separated. A sedimentation bin is also formed inside the shell. A first opening connected to the water inlet bin, a second opening connected to the water pump bin, and a third opening connected to the sedimentation bin are arranged on the shell. A garbage filtering and collecting mechanism is arranged at the third opening. A first one-way valve that can be opened to the inside of the shell is arranged at the first opening, and a second one-way valve that can be opened to the outside of the shell is arranged at the third opening.

[0006] The pool cleaning robot is equipped with a sedimentation bin, a garbage filter collection mechanism, a first one-way valve, and a second one-way valve, so that when the water pump rotates in the opposite direction, a reverse water flow is formed to flush the filter mechanism, flush the dirt to the sedimentation bin and the garbage filter collection mechanism for temporary storage, and avoid clogging the filter mechanism. However, various types of dirt contained in the pool water will inevitably invade and accumulate inside the garbage filter collection mechanism during the cleaning process. With the continuous advancement of the cleaning operation, the dirt continues to accumulate, gradually filling up some key channels and pores of the filter collection mechanism, thereby causing the flow path of the reverse water flow to be seriously blocked. Under normal conditions, the reverse water flow has the key functions of flushing and dredging the filter components. Now that its flow is blocked, the ability of the entire garbage filter collection system to self-adjust and maintain stable filtering efficiency has been greatly weakened.

[0007] At the same time, the dirt in the water is complex and of various shapes, and many of them have a large physical volume, such as oversized garbage fragments and agglomerated algae aggregates. Once such large dirt enters the garbage filter collection mechanism, it will quickly occupy a considerable internal space, greatly reducing the effective filtration volume of the filter collection mechanism, which not only squeezes the space for subsequent dirt, but also interferes with the smoothness of the filtration process, and ultimately has a negative impact on the overall cleaning effect of the pool cleaning robot. Summary of the invention

[0008] In view of the problems of the prior art, a dirt removal mechanism and a swimming pool cleaning robot are provided. By arranging a filter box, a water inlet check valve, a sewage discharge check valve and a sewage pumping and squeezing assembly in the housing, the water pumping assembly backwashes the filter box when directing the water flow in the reverse direction, and the water in the sewage can be efficiently squeezed out by the sewage pumping and squeezing, and the volume is greatly reduced to form a more compact residue shape. The sewage after squeezing is then accurately transported to the collection box by the sewage pumping and squeezing assembly, effectively avoiding the problem of clogging the collection box due to disorderly accumulation of sewage.

[0009] In order to solve the problems of the prior art, the present invention provides a dirt removal mechanism, including a casing, a filter box which can be detachably connected to the casing is arranged in the casing, a filter screen is arranged on the side wall of the filter box, the inner cavity of the filter box forms a filter cavity, a clean water cavity is formed between the outer wall of the filter box and the inner wall of the casing, a water inlet extending along the width direction of the casing and connected to the filter cavity is also arranged at the bottom of the casing, a water outlet connected to the clean water cavity is also arranged at the top of the casing, a water pump assembly for guiding the liquid in the clean water cavity to pass through the water outlet is arranged in the casing; a walking wheel for driving the casing to move in water is also arranged on the outside of the casing driving assembly; cleaning rollers which are transmission-connected to the travel driving assembly are arranged at the front and rear ends of the casing; a water inlet check valve is also arranged at the water inlet, and sewage can pass through the water inlet check valve and enter the filter box; a sewage outlet is also arranged at the bottom of the filter box, and a sewage outlet check valve is arranged at the sewage outlet, and dirt in the filter box can pass through the sewage outlet through the sewage outlet check valve; a collecting box which can be detachably connected to it is also arranged in the casing, and a sewage outlet channel is formed between the collecting box and the sewage outlet, and a sewage pump squeezing assembly for squeezing dirt at the sewage outlet and introducing the dirt into the collecting box is arranged in the sewage outlet channel.

[0010] Preferably, a connecting ear is provided at the top of the water inlet, and a longitudinally extending sliding groove is provided on the connecting ear. The water inlet one-way valve includes a cover plate longitudinally slidably arranged on the top of the water inlet, and the edge of the cover plate abuts against the top edge of the water inlet. A sliding block longitudinally extending is provided on the side of the cover plate, and the sliding block passes through the sliding groove and slides with it.

[0011] Preferably, a collecting bin is provided at the bottom end of the inner cavity of the filter box, the top of the collecting bin is opened to form a collecting port, the side of the collecting bin is opened to form the sewage outlet, the sewage outlet one-way valve includes a flip plate and an elastic reset element, one side of the flip plate is rotatably arranged in the collecting bin, the top of the sewage outlet is provided with a stepped groove, and the other end of the flip plate abuts against the stepped groove; the elastic reset element is arranged between the bottom end of the flip plate and the bottom end of the collecting bin.

[0012] Preferably, the sewage pumping assembly comprises a sewage pump box, a sewage pump shaft and a one-way synchronous transmission mechanism; the sewage pump box is fixedly arranged at the bottom of the inner cavity of the casing, a sewage inlet capable of docking with the sewage outlet is provided on one side of the sewage pump box, a circular long groove connected to the sewage inlet is provided in the sewage pump box, a connecting pipe connected to the end of the circular long groove is provided at one end of the sewage pump box, the connecting pipe is communicated with the collecting box, and a filtering hole communicated with the outside of the casing is provided at the bottom of the circular long groove; the sewage pump shaft is coaxially rotatably arranged in the circular long groove, a spiral blade with a hole coaxial with the sewage pump shaft is provided on the circumferential surface of the sewage pump shaft, and one end of the sewage pump shaft passes through the sewage pump box and is rotatably connected with the sewage pump box; the one-way synchronous transmission mechanism synchronously drives and connects the sewage pump shaft and the travel drive assembly, and when the travel drive assembly retreats, the torque is transmitted to the sewage pump shaft through the one-way synchronous transmission mechanism; the outer end of the connecting pipe is provided with a conical head elastically abutting with the sewage pump shaft, the tip of the conical head faces the sewage pump shaft, and an extrusion port can be formed between the conical surface of the conical head and the edge of the connecting pipe.

[0013] Preferably, the sewage pump shaft is hollow and has a connecting shaft coaxially slidably fitted therein, one end of the connecting shaft is coaxially connected to the conical head, the other end of the connecting shaft is provided with a positioning ring located at the outer end of the sewage pump shaft, a limiting ring is provided at one end of the sewage pump shaft facing the positioning ring, an elastic abutment element is sleeved on the connecting shaft, and the elastic abutment element is located between the positioning ring and the limiting ring.

[0014] Preferably, the positioning ring is threadedly connected to the connecting shaft.

[0015] Preferably, a sealing box is also provided in the casing, and the travel drive assembly includes a driving wheel, a driven wheel, a transmission track and a forward motor; there are two driving wheels and they are rotatably arranged on both sides of the casing respectively; there are four driven wheels and they are located on both sides of the driving wheel in pairs, and the cleaning roller is coaxially arranged between the two coaxial driven wheels; the transmission track is mounted on the driving wheel and the driven wheel; the forward motor is arranged in the sealing box, and the output shaft of the forward motor passes through the sealing box and is transmission-connected to the driving wheel; the one-way synchronous transmission mechanism transmission-connects the output shaft of the forward motor and the sewage pump shaft.

[0016] Preferably, the one-way synchronous transmission mechanism includes a driving disk, a driven disk, a driving sprocket, a driven sprocket and a synchronous chain; the driving disk is synchronously connected to the output shaft of the forward motor, a fixed ring is provided at one end of the driving disk, and ratchet grooves distributed along its circumference are provided on the inner circumference of the fixed ring; the driven disk is coaxially rotatably arranged in the fixed ring, and ratchets distributed along its circumference and springs for abutting the ratchets in the ratchet grooves are provided on the driven disk; the driving sprocket is coaxially fixedly connected to the driving disk; the driven sprocket is coaxially fixedly connected to the sewage pump shaft; the synchronous chain is sleeved on the driving sprocket and the driven sprocket.

[0017] Preferably, the bottom end of the water outlet is provided with a drainage tube extending downward and abutting against the sealing box, and the drainage tube is provided with a drainage groove connected to the clean water chamber, and the water pumping assembly includes a water pumping motor and an impeller; the water pumping motor is arranged in the sealing box, and the output shaft of the water pumping motor passes through the sealing box and extends into the drainage tube; the impeller is coaxially arranged on the output shaft of the water pumping motor and is higher than the drainage groove.

[0018] Pool cleaning robot including dirt removal mechanism.

[0019] Compared with the prior art, the present invention has the following beneficial effects: The present application integrates a filter box, a water inlet check valve, a sewage discharge check valve and a sewage pumping assembly in a housing. The water inlet check valve can ensure that water flows into the filter box stably and orderly, and prevents sewage from flowing back through the water inlet to pollute the swimming pool during backwashing; the sewage discharge check valve is responsible for limiting the reverse flow path of the fluid, laying a solid foundation for the stable implementation of the subsequent backwashing process.

[0020] When the pump assembly performs the reverse water flow guidance operation, it uses the kinetic energy of the water to drive the backwash process to act precisely on the filter box. In this process, the impact force carried by the water flow flushes all filter material layers of the filter box from a specific angle in all directions, stripping off all kinds of dirt attached to the gaps and surfaces of the filter material. At the same time, the pump sewage pressing assembly works together to perform deep squeezing treatment on the stripped dirt. The water in the dirt is efficiently squeezed out, resulting in a significant reduction in the volume of the dirt, which is then transformed into a residue form with a tighter texture and a denser structure.

[0021] After the precise squeezing of the sewage pump component, the sewage will be transported to a specially set collection box under the orderly drive of the mechanical transmission structure inside the component, following the preset conveying trajectory and speed. This avoids the potential hidden danger of blockage of the flow channel inside the collection box due to random throwing and irregular accumulation of sewage, effectively guarantees the efficiency and stability of the entire sewage discharge process of the equipment, and maintains the long-term stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the swimming pool cleaning robot of the present invention.

[0023] Figure 2 It is a cross-sectional view of the swimming pool cleaning robot of the present invention.

[0024] Figure 3 It is a schematic diagram of the internal structure of the swimming pool cleaning robot of the present invention.

[0025] Figure 4 It is a stereoscopic diagram of the one-way synchronous transmission mechanism in the swimming pool cleaning robot of the present invention.

[0026] Figure 5It is a stereoscopic diagram of the filter box and the sewage pumping and squeezing assembly in the swimming pool cleaning robot of the present invention.

[0027] Figure 6 It is a three-dimensional exploded view of the filter box and the sewage pump pressing assembly in the swimming pool cleaning robot of the present invention.

[0028] Figure 7 It is a side view of the filter box and the sewage pumping and squeezing assembly in the swimming pool cleaning robot of the present invention.

[0029] Figure 8 yes Figure 7 Cross-sectional view in the AA direction.

[0030] Fig. 9 It is a three-dimensional exploded view of the sewage pumping and squeezing assembly in the swimming pool cleaning robot of the present invention.

[0031] Fig.10 yes Fig. 9 A partial enlarged view of point B.

[0032] The numbers in the figure are: 1, casing; 11, water inlet; 111, water inlet check valve; 1111, cover plate; 112, connecting ear; 12, water outlet; 121, drainage tube; 1211, drainage groove; 2, filter box; 21, sewage outlet; 211, sewage check valve; 2111, flip plate; 2112, elastic reset element; 22, collection bin; 31, pump motor; 32, impeller; 4, travel drive assembly; 41, driving wheel; 42, driven wheel; 43, transmission crawler; 44, forward motor; 5, cleaning roller; 6, collection box; 7. Sewage pump pressing assembly; 71. Sewage pump box; 711. Sewage inlet; 712. Filter hole; 713. Connecting pipe; 72. Sewage pump shaft; 721. Spiral blade with hole; 722. Limiting ring; 73. Conical head; 74. One-way synchronous transmission mechanism; 741. Active disk; 7411. Fixed ring; 7412. Ratchet groove; 742. Driven disk; 7421. Ratchet; 7422. Spring; 743. Active sprocket; 744. Driven sprocket; 745. Synchronous chain; 75. Connecting shaft; 76. Positioning ring; 77. Elastic abutment element. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the present application provides a dirt removal mechanism, including a casing 1, a filter box 2 which can be detachably connected to the casing 1 is arranged inside the casing 1, a filter screen is arranged on the side wall of the filter box 2, the inner cavity of the filter box 2 forms a filter cavity, a clean water cavity is formed between the outer wall of the filter box 2 and the inner wall of the casing 1, a water inlet 11 extending along the width direction and connected to the filter cavity is also arranged at the bottom of the casing 1, a water outlet 12 connected to the clean water cavity is also arranged at the top of the casing 1, a water pump assembly for guiding the liquid in the clean water cavity to pass through the water outlet 12 is arranged inside the casing 1; a walking drive assembly 4 for driving the casing 1 to move in the water is also arranged on the outside of the casing 1; the front end and A cleaning roller 5 which is transmission-connected to the travel drive assembly 4 is provided at the rear end; a water inlet check valve 111 is also provided at the water inlet 11, and sewage can pass through the water inlet check valve 111 and enter the filter box 2; a sewage outlet 21 is also provided at the bottom of the filter box 2, and a sewage discharge check valve 211 is provided at the sewage discharge outlet 21, and the sewage in the filter box 2 can pass through the sewage discharge check valve 211 and pass through the sewage discharge outlet 21; a collecting box 6 which can be detachably connected thereto is also provided in the casing 1, and a sewage discharge channel is formed between the collecting box 6 and the sewage discharge outlet 21, and a sewage pumping component 7 for squeezing the sewage at the sewage discharge outlet 21 and introducing the sewage into the collecting box 6 is provided in the sewage discharge channel.

[0035] The main body of the decontamination mechanism is composed of a housing 1, and a filter box 2 is arranged inside the housing 1. The two are connected in a detachable manner. This design facilitates subsequent maintenance and replacement operations and ensures long-term stable operation of the equipment. A filter net is embedded in the side wall of the filter box 2. Different functional areas are divided by the fine screening characteristics of the filter net: its inner cavity is constructed as a filter cavity, which is mainly responsible for filtering sewage; and the outer wall of the filter box 2 and the inner wall of the housing 1 are surrounded to form a clean water cavity, where the clean water after filtration is gathered.

[0036] At the bottom of the housing 1, a water inlet 11 is arranged along its width. This water inlet 11 is connected to the filter chamber and is the entrance for sewage to enter the filter box 2. A water inlet check valve 111 is installed at the water inlet 11. With the one-way conduction characteristics of the check valve, sewage can pass through in an orderly manner and be accurately injected into the filter box 2 to avoid backflow interference with the filtration process and to avoid dirt overflowing through the water inlet 11 during backwashing. At the top of the housing 1, a water outlet 12 connected to the clean water chamber is provided. A matching pump assembly is placed in the housing 1 to provide a directional driving force for the liquid in the clean water chamber, so that the purified clean water can stably pass through the water outlet 12 and be discharged.

[0037] The outer side of the housing 1 is also equipped with a travel drive assembly 4, which can give the housing 1 a precise displacement driving force, so that it can move smoothly along a preset trajectory in the water environment, and expand the operating coverage of the equipment. A cleaning roller 5 is placed at the front and rear ends of the housing 1. The cleaning roller 5 is connected to the travel drive assembly 4 by transmission. As the equipment moves forward, the cleaning roller 5 rotates synchronously under the power drive. Through the special cleaning structures such as bristles and scrapers on its surface, the attached dirt is physically peeled off and preliminarily cleaned wherever it passes, which helps to improve the overall decontamination efficiency.

[0038] A sewage outlet 21 is provided at the bottom of the filter box 2, and a sewage one-way valve 211 is installed at the sewage outlet 21. A detachably connected collection box 6 is also placed in the housing 1, and a sewage channel is constructed between it and the sewage outlet 21. A sewage pump squeezing component 7 is integrated inside the sewage channel. This component uses the principle of mechanical squeezing. When the sewage flows through here, it applies a precisely controllable squeezing force to efficiently squeeze out the excess water in the sewage, reduce its volume, and then smoothly introduce the compacted sewage after squeezing into the collection box 6, which greatly reduces the risk of clogging the sewage channel or the collection box 6 due to loose accumulation of sewage, and ensures the smoothness and stability of the sewage discharge process of the equipment.

[0039] like Figure 2 As shown, a connecting ear 112 is provided at the top of the water inlet 11, and a longitudinally extending sliding groove is opened on the connecting ear 112. The water inlet one-way valve 111 includes a cover plate 1111 longitudinally slidably arranged on the top of the water inlet 11, and the edge of the cover plate 1111 abuts against the top edge of the water inlet 11. A sliding block extending longitudinally is provided on the side of the cover plate 1111, and the sliding block passes through the sliding groove and slides with it.

[0040] A sliding groove extending along the longitudinal dimension is designed on the structure of the connecting ear 112, and the cover plate 1111 is precisely placed on the top area of ​​the water inlet 11 in a sliding manner along the longitudinal direction. From the perspective of assembly relationship, the edge of the cover plate 1111 fits tightly with the edge of the top of the water inlet 11 to form a stable plane contact. This fitting state ensures good sealing while providing physical support for the subsequent realization of the one-way valve function.

[0041] A sliding block extending in the longitudinal direction is constructed on the side of the cover plate 1111. The sliding block passes straight through the sliding groove from one end, and a smooth and highly accurate sliding fit relationship is established between the two. Relying on this precise fit, the cover plate 1111 can slide stably in the longitudinal direction on the top of the water inlet 11, accurately responding to the water flow control requirements under different working conditions in the system, thereby achieving a stable and efficient opening and closing action of the one-way valve, and maintaining the unidirectionality and controllability of the fluid delivery process. like Figure 8 and Fig. 9As shown, a collecting bin 22 is provided at the bottom end of the inner cavity of the filter box 2, the top of the collecting bin 22 is opened to form a collecting port, the side of the collecting bin 22 is opened to form the sewage outlet 21, and the sewage outlet one-way valve 211 includes a flip plate 2111 and an elastic reset element 2112, one side of the flip plate 2111 is rotatably arranged in the collecting bin 22, the top of the sewage outlet 21 is provided with a stepped groove, and the other end of the flip plate 2111 abuts against the stepped groove; the elastic reset element 2112 is arranged between the bottom end of the flip plate 2111 and the bottom end of the collecting bin 22.

[0042] A collecting chamber 22 is arranged at the bottom of the inner cavity of the filter box 2. The collecting chamber 22 is in an open state, thereby forming a collecting port, which has the important function of gathering and collecting the dirt intercepted by the preliminary filtering process. The side of the collecting chamber 22 is also provided with an opening, which is the sewage outlet 21, and is the passage for the subsequent sewage discharge process.

[0043] The sewage check valve 211 is mainly composed of two key elements: a flip plate 2111 and an elastic reset element 2112. One side of the flip plate 2111 is rotatably assembled inside the collection bin 22 by means of an axle pin connection, thereby realizing the function of flexible rotation around the axle pin. A stepped groove is specially made corresponding to the top position of the sewage outlet 21, and the other end of the flip plate 2111 is precisely abutted against this stepped groove, and the two are tightly fitted to form an initial sealing state, which limits the intrusion of reverse fluid from the physical structure level.

[0044] The elastic reset element 2112 is arranged between the bottom end of the flip plate 2111 and the bottom end of the collecting bin 22. When the positive pressure causes the flip plate 2111 to overcome the elastic force of the elastic reset element 2112 and rotate around the axis, the water flows in the opposite direction, the sewage outlet 21 opens, and the sewage is discharged. Once the positive pressure disappears, the elastic reset element 2112 quickly pushes the flip plate 2111 to reset by its own elastic force, so that it abuts against the step groove again, quickly restoring the sealing state, and eliminating the possibility of reverse fluid flowing into the collecting bin 22, thereby effectively ensuring the accurate realization of the one-way valve function and the stable operation of the entire filtration system.

[0045] like Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, the sewage pumping and squeezing assembly 7 includes a sewage pumping box 71, a sewage pumping shaft 72 and a one-way synchronous transmission mechanism 74; The sewage pump box 71 is fixedly arranged at the bottom of the inner cavity of the casing 1, and a sewage inlet 711 capable of docking with the sewage outlet 21 is provided on one side of the sewage pump box 71. A circular long groove connected to the sewage inlet 711 is provided in the sewage pump box 71. A connecting pipe 713 connected to the end of the circular long groove is provided at one end of the sewage pump box 71. The connecting pipe 713 is connected to the collecting box 6, and a filtering hole 712 connected to the outside of the casing 1 is provided at the bottom of the circular long groove; the sewage pump shaft 72 is coaxially rotatably arranged in the circular long groove, and the circumferential surface of the sewage pump shaft 72 is provided with a filter hole 712 connected to the outside of the casing 1. A coaxial spiral blade 721 with a hole is provided, and one end of the sewage pump shaft 72 passes through the sewage pump box 71 and is rotatably connected thereto; a one-way synchronous transmission mechanism 74 synchronously transmits the sewage pump shaft 72 and the travel drive assembly 4, and when the travel drive assembly 4 retreats, the torque is transmitted to the sewage pump shaft 72 through the one-way synchronous transmission mechanism 74; the outer end of the connecting tube 713 is provided with a conical head 73 elastically abutting against it, and the tip of the conical head 73 faces the sewage pump shaft 72, and an extrusion opening can be formed between the conical surface of the conical head 73 and the edge of the connecting tube 713.

[0046] The sewage pump box 71 is firmly and accurately positioned at the bottom of the inner cavity of the housing 1. On one side of the sewage pump box 71, a sewage inlet 711 is provided. The sewage inlet 711 can be seamlessly connected to the sewage outlet 21, thereby constructing an exclusive channel for sewage to enter the sewage pump box 71. The sewage pump box 71 is internally constructed with a circular long groove, which is smoothly connected to the sewage inlet 711. Under the guidance of the principles of fluid dynamics, it is ensured that the sewage entering can flow into the groove. At one end of the sewage pump box 71, a connecting pipe 713 is also extended. The connecting pipe 713 accurately connects the end of the circular long groove with the collection box 6, forming a key link for conveying sewage to the collection box 6. In addition, in order to meet specific filtering requirements, a filter hole 712 connected to the outside of the housing 1 is also provided at the bottom of the circular long groove.

[0047] The sewage pump shaft 72 is ingeniously arranged in the circular long groove in a coaxially rotating manner, and a spiral blade 721 with a hole is installed on its circumferential surface. The blade is coaxially arranged with the sewage pump shaft 72 to ensure that it can efficiently squeeze and push the sewage in the circular long groove during the rotation process. One end of the sewage pump shaft 72 extends through the sewage pump box 71.

[0048] When the travel drive assembly 4 performs the backward action, the torque generated by the travel drive assembly 4 is accurately transmitted to the sewage pump shaft 72, so that the sewage pump shaft 72 can drive the spiral blades to rotate in the circular long groove and continuously push the sewage toward the conical head 73. At the conical surface of the conical head 73, the sewage is continuously squeezed until the squeezing force is greater than the abutment force of the conical head 73 on the connecting head. An extrusion opening can be formed between the conical surface of the conical head 73 and the edge of the connecting pipe 713, and the squeezed sewage can enter the collection box 6 through the extrusion opening, thereby ensuring that the sewage can be stored in the form of residue.

[0049] like Fig. 9As shown, the sewage pump shaft 72 is hollow and has a connecting shaft 75 coaxially slidably matched therewith. One end of the connecting shaft 75 is coaxially connected to the conical head 73, and the other end of the connecting shaft 75 is provided with a positioning ring 76 located at the outer end of the sewage pump shaft 72. A limiting ring 722 is provided at one end of the sewage pump shaft 72 facing the positioning ring 76. An elastic abutment element 77 is sleeved on the connecting shaft 75, and the elastic abutment element 77 is located between the positioning ring 76 and the limiting ring 722.

[0050] A connecting shaft 75 is arranged in the hollow inner cavity of the sewage pump shaft 72. The connecting shaft 75 and the sewage pump shaft 72 are coaxially arranged, and the two form a coaxial sliding fit relationship.

[0051] One end of the connecting shaft 75 is coaxially connected with the conical head 73, so that the two can work together in subsequent operation to efficiently transmit the external force to the conical head 73. The other end of the connecting shaft 75 is equipped with a positioning ring 76, which is firmly set in the outer end area of ​​the pump sewage shaft 72. Its function is to provide a precise positioning reference for the axial displacement of the connecting shaft 75. The positioning ring 76 fits tightly with the connecting shaft 75 to ensure the position accuracy of the connecting shaft 75 in the axial direction.

[0052] A limiting ring 722 is provided at one end of the sewage pump shaft 72 facing the positioning ring 76 .

[0053] An elastic abutment element 77 is sleeved on the connecting shaft 75, so that the conical surface of the conical head 73 can elastically abut against the port of the connecting pipe 713, until the pressure on the conical surface is greater than the elastic force of the elastic abutment element 77, and an extrusion opening can be formed between the conical surface of the conical head 73 and the edge of the connecting pipe 713.

[0054] like Fig. 9 and Fig.10 As shown, the positioning ring 76 is threadedly connected to the connecting shaft 75 .

[0055] By rotating the positioning ring 76 relative to the connecting shaft 75, the abutment force of the conical head 73 on the connecting tube 713 can be adjusted. When the positioning ring 76 rotates toward the conical head 73, the length of the elastic abutment element 77 decreases, thereby increasing the abutment force of the conical head 73 on the connecting tube 713. On the contrary, if the positioning ring 76 rotates away from the conical head 73, the length of the elastic abutment element 77 increases, and the abutment force decreases accordingly. In this way, the abutment force of the conical head 73 on the connecting tube 713 can be accurately and flexibly adjusted according to the actual working conditions, and the overall operating efficiency of the sewage pumping assembly 7 can be optimized.

[0056] like Figure 8 and Fig.10As shown, a sealing box is also provided in the casing 1, and the travel drive assembly 4 includes a driving wheel 41, a driven wheel 42, a transmission belt 43 and a forward motor 44; there are two driving wheels 41 and they are rotatably arranged on both sides of the casing 1; there are four driven wheels 42 and they are located on both sides of the driving wheel 41 in pairs, and the cleaning roller 5 is coaxially arranged between the two coaxial driven wheels 42; the transmission belt 43 is sleeved on the driving wheel 41 and the driven wheel 42; the forward motor 44 is arranged in the sealing box, and the output shaft of the forward motor 44 passes through the sealing box and is connected to the driving wheel 41 in transmission; the one-way synchronous transmission mechanism 74 is connected to the output shaft of the forward motor 44 and the sewage pump shaft 72 in transmission.

[0057] The transmission track 43 is mounted on the driving wheel 41 and the driven wheel 42. During the assembly process, the tension of the track is strictly controlled and maintained in an appropriate range using a tension adjustment device to avoid slipping due to excessive looseness and additional friction loss and component stress concentration caused by excessive tightness.

[0058] The forward motor 44, as the power source of the travel drive assembly 4, is properly placed in the sealing box. The sealing box provides a stable and reliable operating space for the forward motor 44. The output shaft of the forward motor 44 passes through the sealing box. This penetration process is ensured by a high-precision shaft sealing device to ensure that the sealing of the sealing box is not damaged. The output shaft after passing through establishes a stable transmission connection relationship with the driving wheel 41 according to the mechanical transmission principle.

[0059] The one-way synchronous transmission mechanism 74 enables the torque to be transmitted to the sewage pump shaft 72 in an orderly and one-way manner when the output shaft of the forward motor 44 rotates under specific working conditions, thereby achieving synchronous action between the two, thereby allowing the two key functions of travel drive and sewage pumping to operate in coordination, thereby improving the overall operating efficiency of the equipment.

[0060] like Figure 8 and Fig.10 As shown, the one-way synchronous transmission mechanism 74 includes a driving disk 741, a driven disk 742, a driving sprocket 743, a driven sprocket 744 and a synchronous chain 745; the driving disk 741 is synchronously connected with the output shaft of the forward motor 44, a fixed ring 7411 is provided at one end of the driving disk 741, and the inner periphery of the fixed ring 7411 is provided with ratchet grooves 7412 distributed along its circumference; the driven disk 742 is coaxially rotatably arranged in the fixed ring 7411, and the driven disk 742 is provided with ratchet teeth 7421 distributed along its circumference and a spring 7422 for abutting the ratchet teeth 7421 in the ratchet groove 7412; the driving sprocket 743 is coaxially fixedly connected to the driving disk 741; the driven sprocket 744 is coaxially fixedly connected to the sewage pump shaft 72; the synchronous chain 745 is sleeved on the driving sprocket 743 and the driven sprocket 744.

[0061] The active disk 741 and the output shaft of the forward motor 44 establish a synchronous transmission connection relationship, ensuring that the active disk 741 can accurately follow the rotation of the output shaft of the forward motor 44 and stably and losslessly receive the torque output by the motor. At one end of the active disk 741, a fixed ring 7411 is integrally formed, and the inner circumference of the fixed ring 7411 is carefully processed with ratchet grooves 7412 evenly distributed along its circumference, in order to achieve a precise fit with the corresponding parts on the driven disk 742, thereby realizing a one-way transmission function.

[0062] The driven disk 742 is arranged in the fixed ring 7411 in a coaxial rotation manner. The driven disk 742 is provided with ratchet teeth 7421 distributed along its circumference. The ratchet teeth 7421 are precisely matched with the ratchet grooves 7412 with the same spacing as the inner circumference of the fixed ring 7411. The two cooperate with each other to form the core structure of the one-way transmission. In addition, a spring 7422 is provided for abutting the ratchet teeth 7421 in the ratchet grooves 7412. The spring 7422 continuously applies a stable elastic force to drive the ratchet teeth 7421 to abut tightly against the ratchet grooves 7412, ensuring stable power transmission during forward transmission; when a reverse driving torque occurs, the ratchet teeth 7421 are blocked by the ratchet grooves 7412, and the driven disk 742 is kept stationary with the help of the buffering of the spring 7422, thereby achieving a one-way transmission effect.

[0063] The driving sprocket 743 and the driving disk 741 are connected in a coaxial fixed manner to ensure that the two always maintain coaxial synchronization during high-speed rotation, thereby avoiding transmission errors and component wear caused by eccentricity and looseness.

[0064] The driven sprocket 744 is precisely positioned and installed on the sewage pump shaft 72 to ensure the coaxial consistency of the two during rotation.

[0065] The synchronous chain 745 is mounted on the driving sprocket 743 and the driven sprocket 744. During assembly, the tension of the chain is finely adjusted with the help of a tensioning device to maintain the chain in an optimal working state, thereby avoiding problems such as tooth skipping and increased wear caused by loose or overtightened chains, thereby ensuring stable and efficient transmission of power between the driving sprocket 743 and the driven sprocket 744.

[0066] When the output shaft of the forward motor 44 rotates forward, the forward motor 44 cannot input torque to the sewage pump shaft 72. When the output shaft of the forward motor 44 rotates reversely, the forward motor 44 can input torque to the sewage pump shaft 72, so that the sewage pump shaft 72 rotates to squeeze the sewage.

[0067] like Figure 2As shown, the bottom end of the water outlet 12 is provided with a drainage tube 121 extending downward and abutting against the sealing box, and the drainage tube 121 is provided with a drainage groove 1211 connected to the clean water chamber, and the water pumping assembly includes a water pumping motor 31 and an impeller 32; the water pumping motor 31 is arranged in the sealing box, and the output shaft of the water pumping motor 31 passes through the sealing box and extends into the drainage tube 121; the impeller 32 is coaxially arranged on the output shaft of the water pumping motor 31 and is higher than the drainage groove 1211.

[0068] At the bottom of the water outlet 12, a drainage tube 121 is provided, which extends vertically downward, and its end abuts against the corresponding position of the sealing box. On the wall of the drainage tube 121, a drainage groove 1211 is precisely opened, and the drainage groove 1211 is connected to the clean water chamber to achieve the most efficient and smooth drainage and transportation of the purified water in the clean water chamber.

[0069] The water pumping motor 31 is properly placed inside the sealing box, and the output shaft of the water pumping motor 31 passes through the sealing box to ensure that the sealing performance of the sealing box is not damaged at all, and the output shaft smoothly extends into the drainage tube 121.

[0070] The impeller 32 is precisely assembled on the output shaft of the pump motor 31 in a coaxial manner. Its position is higher than the drainage groove 1211. Such a layout enables the impeller 32 to accurately grab the water in the drainage tube 121 when the pump motor 31 drives the impeller 32 to rotate at a high speed, and by means of the centrifugal force principle, the water is prompted to flow stably to the water outlet 12 through the drainage groove 1211 at an appropriate flow rate and flow rate, thereby realizing the efficient discharge of the purified water in the clean water chamber to the external environment.

[0071] like Figure 1 As shown, the pool cleaning robot includes a dirt removal mechanism.

[0072] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications 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 patent shall be subject to the attached claims.

Claims

1. A dirt removal mechanism, characterized in that: The invention comprises a casing (1), wherein a filter box (2) which can be detachably connected to the casing (1) is arranged inside the casing (1), a filter screen is arranged on the side wall of the filter box (2), an inner cavity of the filter box (2) forms a filter cavity, a clean water cavity is formed between the outer wall of the filter box (2) and the inner wall of the casing (1), a water inlet (11) extending along the width direction thereof and communicating with the filter cavity is arranged at the bottom of the casing (1), a water outlet (12) communicating with the clean water cavity is arranged at the top of the casing (1), and a water pump assembly for guiding liquid in the clean water cavity to pass through the water outlet (12) is arranged inside the casing (1); A travel drive assembly (4) for driving the housing (1) to move in water is also provided on the outer side of the housing (1); Cleaning rollers (5) are provided at the front and rear ends of the housing (1) and are transmission-connected to the travel drive assembly (4); The water inlet (11) is also provided with a water inlet check valve (111), and sewage can pass through the water inlet check valve (111) and enter the filter box (2); A sewage outlet (21) is also provided at the bottom of the filter box (2), and a sewage outlet one-way valve (211) is provided at the sewage outlet (21), so that the sewage in the filter box (2) can pass through the sewage outlet (21) through the sewage outlet one-way valve (211); The housing (1) is also provided with a collecting box (6) that can be detachably connected thereto, a sewage discharge channel is formed between the collecting box (6) and the sewage discharge port (21), and a sewage pumping and squeezing assembly (7) for squeezing sewage at the sewage discharge port (21) and introducing the sewage into the collecting box (6) is provided in the sewage discharge channel.

2. The dirt removal mechanism according to claim 1, characterized in that: The top of the water inlet (11) is provided with a connecting ear (112), and a longitudinally extending sliding groove is provided on the connecting ear (112). The water inlet one-way valve (111) comprises a cover plate (1111) longitudinally slidably arranged at the top of the water inlet (11), the edge of the cover plate (1111) abuts against the top edge of the water inlet (11), and a longitudinally extending sliding block is provided on the side of the cover plate (1111), and the sliding block passes through the sliding groove and slides with it.

3. The dirt removal mechanism according to claim 1, characterized in that: A collecting bin (22) is provided at the bottom end of the inner cavity of the filter box (2); the top of the collecting bin (22) is open to form a collecting port; the side of the collecting bin (22) is open to form the sewage outlet (21); the sewage outlet one-way valve (211) comprises a flip plate (2111) and an elastic reset element (2112); one side of the flip plate (2111) is rotatably arranged in the collecting bin (22); a stepped groove is provided at the top end of the sewage outlet (21); and the other end of the flip plate (2111) abuts against the stepped groove; the elastic reset element (2112) is arranged between the bottom end of the flip plate (2111) and the bottom end of the collecting bin (22).

4. The dirt removal mechanism according to any one of claims 1 to 3, characterized in that: The sewage pumping assembly (7) comprises a sewage pumping box (71), a sewage pumping shaft (72) and a one-way synchronous transmission mechanism (74); The sewage pump box (71) is fixedly arranged at the bottom of the inner cavity of the casing (1); a sewage inlet (711) capable of docking with the sewage outlet (21) is provided on one side of the sewage pump box (71); a circular long groove connected to the sewage inlet (711) is provided in the sewage pump box (71); a connecting pipe (713) connected to the end of the circular long groove is provided at one end of the sewage pump box (71); the connecting pipe (713) is connected to the collection box (6); and a filtering hole (712) connected to the outside of the casing (1) is provided at the bottom of the circular long groove; The sewage pump shaft (72) is coaxially rotatably arranged in the circular long groove, and a spiral blade (721) with a hole coaxially therewith is arranged on the circumferential surface of the sewage pump shaft (72). One end of the sewage pump shaft (72) penetrates the sewage pump box (71) and is rotatably connected thereto. The one-way synchronous transmission mechanism (74) synchronously transmits the sewage pump shaft (72) and the travel drive assembly (4), and when the travel drive assembly (4) moves backward, the one-way synchronous transmission mechanism (74) transmits torque to the sewage pump shaft (72); The outer end of the connecting pipe (713) is provided with a conical head (73) elastically abutting against the connecting pipe, the tip of the conical head (73) faces the sewage pump shaft (72), and an extrusion opening can be formed between the conical surface of the conical head (73) and the edge of the connecting pipe (713).

5. The dirt removal mechanism according to claim 4, characterized in that: The sewage pump shaft (72) is hollow and has a connecting shaft (75) coaxially slidably engaged therewith. One end of the connecting shaft (75) is coaxially connected to the conical head (73). The other end of the connecting shaft (75) is provided with a positioning ring (76) located at the outer end of the sewage pump shaft (72). A limiting ring (722) is provided at one end of the sewage pump shaft (72) facing the positioning ring (76). An elastic abutting element (77) is sleeved on the connecting shaft (75). The elastic abutting element (77) is located between the positioning ring (76) and the limiting ring (722).

6. The dirt removal mechanism according to claim 5, characterized in that: The positioning ring (76) is threadedly connected to the connecting shaft (75).

7. The dirt removal mechanism according to claim 4, characterized in that: A sealing box is also provided in the housing (1), and the travel drive assembly (4) comprises a driving wheel (41), a driven wheel (42), a transmission crawler belt (43) and a forward motor (44); There are two driving wheels (41) which are rotatably arranged on both sides of the casing (1); There are four driven wheels (42) and two of them are located on both sides of the driving wheel (41), and the cleaning roller (5) is coaxially arranged between the two coaxial driven wheels (42); The transmission crawler belt (43) is sleeved on the driving wheel (41) and the driven wheel (42); The forward motor (44) is arranged in the sealing box, and the output shaft of the forward motor (44) passes through the sealing box and is drivingly connected to the driving wheel (41); The one-way synchronous transmission mechanism (74) is transmission-connected to the output shaft of the forward motor (44) and the sewage pump shaft (72).

8. The dirt removal mechanism according to claim 7, characterized in that: The one-way synchronous transmission mechanism (74) comprises a driving disc (741), a driven disc (742), a driving sprocket (743), a driven sprocket (744) and a synchronous chain (745); The driving disk (741) is synchronously connected to the output shaft of the forward motor (44); a fixing ring (7411) is provided at one end of the driving disk (741); and ratchet grooves (7412) distributed along the circumference of the fixing ring (7411); The driven disk (742) is coaxially rotatably disposed in the fixed ring (7411), and the driven disk (742) is provided with ratchet teeth (7421) distributed along its circumference and a spring (7422) for abutting the ratchet teeth (7421) against the ratchet groove (7412); The driving sprocket (743) is coaxially fixedly connected to the driving disc (741); The driven sprocket (744) is coaxially fixedly connected to the sewage pump shaft (72); The synchronous chain (745) is sleeved on the driving sprocket (743) and the driven sprocket (744).

9. The dirt removal mechanism according to claim 7, characterized in that: The bottom end of the water outlet (12) is provided with a drainage tube (121) extending downward and abutting against the sealing box, and the drainage tube (121) is provided with a drainage groove (1211) communicating with the clean water chamber, and the water pump assembly comprises a water pump motor (31) and an impeller (32); The water pumping motor (31) is arranged in the sealing box, and the output shaft of the water pumping motor (31) passes through the sealing box and extends into the drainage tube (121); The impeller (32) is coaxially arranged on the output shaft of the water pump motor (31) and is higher than the drainage groove (1211).

10. A swimming pool cleaning robot, characterized in that: It comprises a dirt removal mechanism as described in any one of claims 1-3.

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