Water cleaning apparatus and water spray mechanism

Abstract

The present disclosure relates to the technical field of water cleaning. Provided are a water cleaning apparatus and a water spray mechanism. The water cleaning apparatus comprises a housing, a filter mechanism, a water spray mechanism and a travelling mechanism, wherein the housing is provided with at least one water inlet, the water inlet being in fluid communication with an inlet of the filter mechanism; the water spray mechanism comprises a fluid pumping device and a water spray outlet; the fluid pumping device generates a suction force to drive a water flow from the water inlet to the water spray outlet, such that the water flow entering the water inlet flows out of the apparatus through the at least one water spray outlet after passing through the filter mechanism; and the water spray outlet is arranged on the apparatus and has a variable direction of water spray, and is driven by an adjusting mechanism, such that the at least one water spray outlet switches at least between perpendicular and parallel to the direction of movement of the water cleaning apparatus. The present disclosure enables the water spray outlet to shift into a suitable direction of water spray on the basis of the position of the apparatus, such that the reverse thrust generated when spraying water outwards through the water spray outlet can provide movement assistance for the apparatus, thereby improving the movement performance of the apparatus in water.

Description

Water cleaning equipment and water spraying mechanism Technical Field

[0001] The present disclosure relates to the technical field of water cleaning, and more particularly to a water cleaning device and a water spraying mechanism. Background Art

[0002] The pool's water, bottom, and walls require regular cleaning and maintenance to keep the water clear and sanitary, providing a safe and comfortable swimming environment. Currently, there are several automated pool cleaning machines on the market that travel underwater and draw water into the machine. This water is filtered through a filtration system and then returned to the pool for cleaning purposes.

[0003] It was found through use that these machines filter the water flow sucked into the machine and then discharge it outward through a fixed nozzle on the machine. In addition, when the water flow is discharged outward using the nozzle, a reverse thrust is generated. If the position of this nozzle is set reasonably, this reverse thrust can provide auxiliary power for the machine to walk underwater. However, some machines only support cleaning on the bottom and wall of the pool, but cannot clean on the water surface; there are also some machines that support cleaning on the bottom, wall and surface of the pool, but because the nozzle position is fixed, the reverse thrust generated by the nozzle drainage cannot adapt to all cleaning scenarios of the machine and provide auxiliary power for it. Therefore, those skilled in the art hope to improve the drainage nozzle structure of the existing machine so that it can adapt to the cleaning of the machine in different states, so that the generated reverse thrust can provide adaptive motion assistance for the machine.

[0004] Summary of the Invention

[0005] The purpose of the present disclosure is to provide a water cleaning device and a water spraying mechanism to solve the technical problem that the nozzle position on the machine for cleaning swimming pools in the prior art is fixed, resulting in the reverse thrust generated by the nozzle drainage being unable to adapt to all cleaning scenarios of the machine, so as to provide the machine with adaptive motion assistance.

[0006] To achieve the above objectives, the technical solutions adopted in this disclosure are:

[0007] On the one hand, the present disclosure provides a water cleaning device, which at least includes: a casing, a filtering mechanism, a water spraying mechanism and a walking mechanism, wherein the casing is provided with at least one water inlet, and the at least one water inlet is connected to the inlet fluid of the filtering mechanism, the water spraying mechanism includes a fluid pumping device, and the fluid pumping device is connected to the outlet fluid of the filtering mechanism and generates a suction force from the water inlet to the water spraying mechanism, and the water spraying mechanism also includes: at least one water spraying port and an adjusting mechanism, the water spraying direction of the at least one water spraying port is adjustably arranged on the device, the adjusting mechanism includes at least one driving motor, each of the driving motors is transmission-connected to the at least one water spraying port, driving the at least one water spraying port to change between at least a first state and a second state, wherein in the first state, the water spraying direction of the at least one water spraying port is roughly perpendicular to the movement direction of the water cleaning device, and in the second state, the water spraying direction of the at least one water spraying port is roughly parallel to the movement direction of the water cleaning device.

[0008] On the other hand, the present disclosure also provides a water spraying mechanism, which is applied to water cleaning equipment, including: a fluid pumping device, at least one water spray outlet and an adjusting mechanism, wherein the fluid pumping device pumps water to the at least one water spray outlet for discharge, and the water spraying direction of the at least one water spray outlet is adjustably set on the equipment, and the adjusting mechanism includes at least one driving motor, each of which is transmission-connected to the at least one water spray outlet to drive the at least one water spray outlet to transform between a first state and a second state, wherein in the first state, the water spraying direction of the at least one water spray outlet is roughly perpendicular to the movement direction of the water cleaning equipment, and in the second state, the water spraying direction of the at least one water spray outlet is roughly parallel to the movement direction of the water cleaning equipment.

[0009] The beneficial effects of the water cleaning equipment provided by the present disclosure are at least that: by arranging at least one water nozzle on the equipment, and these water nozzles can be controlled by an adjusting mechanism to change the water spraying direction, when the equipment is cleaning at different positions, the water nozzles can change the corresponding water spraying direction according to the position of the equipment, so that the reverse thrust generated by the water nozzle when spraying water outward can provide movement assistance for the equipment, thereby improving the movement performance of the equipment in water. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0011] FIG1 is a schematic structural diagram of a water cleaning device provided by an embodiment of the present disclosure;

[0012] FIG2 is a schematic diagram illustrating the water flow direction in a water cleaning device according to an embodiment of the present disclosure;

[0013] FIG3 is a cross-sectional view of a fluid pumping device and a water spray port provided in an embodiment of the present disclosure;

[0014] FIG4 is a schematic structural diagram of a water spout driven by an adjusting mechanism according to an embodiment of the present disclosure;

[0015] FIG5 is a schematic structural diagram of another regulating mechanism driving a water spout according to an embodiment of the present disclosure;

[0016] FIG6 is a side cross-sectional view of another regulating mechanism driving a water spout according to an embodiment of the present disclosure;

[0017] FIG7 is a front structural diagram of another regulating mechanism driving a water spout provided in an embodiment of the present disclosure;

[0018] FIG8 is a front structural diagram of a water spout driven by an adjustment mechanism provided in an embodiment of the present disclosure;

[0019] FIG9 is a partial front cross-sectional view of a water spout driven by an adjustment mechanism provided in an embodiment of the present disclosure;

[0020] FIG10 is an exploded view of a clutch assembly provided in an embodiment of the present disclosure;

[0021] FIG11 is a schematic diagram showing the principle of a water spout driven by an adjusting mechanism according to an embodiment of the present disclosure;

[0022] FIG12 is a structural diagram of a motor end and an output end provided by an embodiment of the present disclosure;

[0023] FIG13 is a partial cross-sectional exploded view of a motor end and an output end provided in an embodiment of the present disclosure.

[0024] Among them, the figure marks are: 1. Water cleaning equipment; 11. Housing; 12. Filtering mechanism; 13. Water spraying mechanism; 13A. Fluid pumping device; 13B. Water spraying port; 131B. First water spraying port; 132B. Second water spraying port; 133B. Flange; 134B. Valve; 13C. Adjusting mechanism; C1. Drive motor; C2. Transmission assembly; 14. Walking mechanism; 131A. Water pump; 132A. Water outlet pipe; 133A. Outlet; 134A. Sealing groove; C21. First transmission assembly; C22. Second transmission assembly; C231. First bevel gear; C232. Second bevel gear; C24. Fourth transmission assembly; C25. Fifth transmission assembly; C11. First sleeve; C12. Second sleeve; C13. Spring; C14. Corrugated docking part. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

[0026] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be located directly or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on this technical solution. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] FIG1 is a schematic structural diagram of a water cleaning device provided in an embodiment of the present disclosure, and FIG2 is a schematic structural diagram of the water flow direction in a water cleaning device provided in an embodiment of the present disclosure.

[0028] Please refer to Figures 1-2. The embodiment of the present disclosure provides a water cleaning device 1, which at least includes: a housing 11, a filtering mechanism 12, a water spraying mechanism 13 and a walking mechanism 14. The housing 11 is provided with at least one water inlet, and the at least one water inlet is connected to the inlet fluid of the filtering mechanism 12. The water spraying mechanism 13 includes a fluid pumping device 13A, at least one water spraying port 13B and an adjusting mechanism 13C. The fluid pumping device 13A is connected to the outlet fluid of the filtering mechanism 12 and generates a suction force from the water inlet to the water spraying port 13B. Under the action of the suction force, water flows from the water inlet and passes through the filtering mechanism 12 and then flows out from the at least one water spraying port 13B. The water flows out of the water outlet 13B, and the water spraying direction of at least one water outlet 13B is adjustable. The adjusting mechanism 13C includes at least one driving motor C1. The driving motor C1 and the at least one water outlet 13B are driven by the adjusting mechanism 13C, so that the at least one water outlet 13B can be transformed between at least a first state and a second state. Optionally, the first state and the second state can be between 0-180°, wherein in the first state, the water spraying direction of the at least one water outlet 13B is roughly perpendicular to the movement direction of the water cleaning device 1, and in the second state, the water spraying direction of the at least one water outlet 13B is roughly parallel to the movement direction of the water cleaning device 1.

[0029] In one embodiment, the movement of the water nozzle 13B also includes a third state that is different from the first state and the second state. In the first state, the water spraying direction of the water nozzle is roughly perpendicular to the direction of travel, that is, roughly perpendicular to the surface to be cleaned, mainly providing downward pressure for the cleaning equipment, helping the cleaning equipment to stick to the surface to be cleaned, such as when cleaning the pool wall; in the second state, the water spraying direction of the water nozzle is roughly parallel to the direction of travel, which includes roughly 0° in the same direction as the direction of travel and roughly 180° in the opposite direction of the direction of travel. The reverse thrust of the water nozzle can provide auxiliary power for the backward or forward movement of the cleaning equipment. For example, when cleaning the water surface, the reverse thrust of 0° is for cleaning. The water nozzle is the main power source for the backward movement of the cleaning equipment, and the 180° reverse thrust is the main power source for the forward movement of the cleaning equipment; in the third state, the water nozzle can be directed to any angle other than 0°, 90° and 180°, so the reverse thrust of the water nozzle can be decomposed into a first reverse thrust along the moving direction of the cleaning equipment and a second reverse thrust perpendicular to the moving direction of the cleaning equipment. The first reverse thrust and the second reverse thrust can be adjusted to various sizes according to the instructions of the control system based on the complex operating environment, which can help the cleaning equipment adapt to various cleaning scenarios.

[0030] According to the technical solution provided in the embodiment of the present disclosure, by arranging at least one water spray outlet 13B on the device, and the water spray outlet 13B can be controlled by the adjustment mechanism 13C to change the water spray direction, when the device is cleaned at different positions, the water spray outlet 13B can change the corresponding water spray direction according to the position of the device, so that the reverse thrust generated by the water spray outlet 13B when spraying water outward can provide movement assistance for the device, thereby improving the movement performance of the device in water.

[0031] The water cleaning device 1 (hereinafter referred to as the device) can move underwater to clean, for example, the bottom and walls of a swimming pool; it can also move on the water surface to clean, for example, the surface and waterline of a swimming pool.

[0032] Specifically, in the first state, the water spray direction of the water spout 13B is approximately perpendicular to the direction of movement of the water cleaning device 1. In this case, the steering angle of the water spout 13B is assumed to be 0°. In the second state, the water spray direction of the water spout 13B is approximately parallel to the direction of movement of the water cleaning device 1. Relative to the first state, the steering angle of the water spout 13B can be ±90°. In practical applications, the adjustment mechanism 13C can adjust the water spout 13B between a steering angle of 0° and a steering angle of ±90°, or it can also adjust the water spout 13B to any angle between 0-±90°. For example, the adjustment mechanism 13C can drive the water spout 13B to rotate between the first state and the second state, so that the water spout 13B stops at steering angles of ±20°, ±30°, ±40°, ±45°, and ±60°. Thus, in this embodiment, the steering angle of the water spout 13B is approximately ±90°. Of course, in practice, the turning angle of the water outlet 13B may be appropriately greater than or less than ±90°, or may be appropriately greater than or less than 0°.

[0033] In an application scenario, taking the use of the device to clean a swimming pool as an example, when the device is at the bottom of the pool, the steering angle of the water nozzle 13B can be more inclined to 90°. Since the water flow ejected from the water nozzle 13B will generate a reverse thrust, the vertical component of the reverse thrust (that is, the component of the reverse thrust in the direction perpendicular to the movement of the device) provides a certain downward force for the device, so that the device can stick to the surface of the pool bottom, and the horizontal component of the reverse thrust (that is, the component of the reverse thrust in the direction parallel to the movement of the device) can assist in providing propulsion and increase the power of the device in the direction of movement; when the device is at the pool wall, the steering angle of the water nozzle 13B can be more inclined to 0°, so that the vertical component of the reverse thrust generated by the water nozzle 13B spraying water is greater than the horizontal component, thereby providing a greater downward force for the device to ensure that the device sticks to the pool wall. When the equipment is running on the water surface, the steering angle of the water outlet 13B can be more biased towards ±90°, which is 90° when moving forward and -90° when moving backward. Similarly, the horizontal component of the reverse thrust generated by the water outlet 13B spraying water can assist in providing forward propulsion or backward and turning propulsion, which helps to maintain a constant draft.

[0034] Specifically, the housing 11, the filtering mechanism 12, the water spraying mechanism 13, and the running mechanism 14 are the basic components of a water cleaning device 1. The housing 11 can be the outer shell or body of the water cleaning device 1. The outer shell of the device usually contains other components and also protects the electronic and mechanical parts inside the device. The running mechanism 14 is a mechanism that allows the device to move within the swimming pool and usually includes wheels, tracks, or other running devices. The filtering mechanism 12 is used to filter impurities in the water and generally includes a filter screen or other filter medium. The water spraying mechanism 13 is used to provide suction force to draw water into the device, so that it passes through the filtering structure to clean impurities in the water and then is discharged from the device. Of course, in practice, the water cleaning device 1 may include other structures due to differences in functions, and is not limited to the above-mentioned components. For example, the device may also include at least one of a power supply, a control system, a cleaning mechanism and a buoyancy adjustment mechanism, wherein the power supply is usually powered by a battery or a cable connection; the control system serves as the intelligent control unit of the device, responsible for executing preset cleaning programs, adjusting the movement and cleaning behavior of the device, and enabling the device to have an automatic cleaning function; the cleaning mechanism is used to clean the bottom, walls and waterline of the swimming pool, including but not limited to brushes, roller brushes or other cleaning elements; the buoyancy adjustment mechanism is used to control the buoyancy of the device so that it can float on the water surface or dive to the bottom of the pool.

[0035] It is understandable that the specific implementation methods of the housing 11, filtering mechanism 12, water spraying mechanism 13 and walking mechanism 14 are not unique. The embodiment of the present disclosure only briefly introduces other basic components to help technicians in this field better understand the technical solutions of the embodiment of the present disclosure.

[0036] The number of water outlets 13B can be one or more. For example, at least two water outlets 13B can be provided on the device. If there is one water outlet 13B, the horizontal projection of the axis of the water outlet 13B is collinear with the center line of the water cleaning device 1 in the direction of movement; if there are two water outlets 13B, the two water outlets 13B are roughly symmetrically arranged relative to the center line of the water cleaning device 1 in the direction of movement, for example, the two water outlets 13B are arranged on both sides of the center line of the device's direction of movement and are symmetrical to each other; if there are four water outlets 13B, the four water outlets 13B are divided into two groups, each group has two water outlets 13B, the water outlet direction of one group of water outlets 13B is roughly perpendicular to the direction of movement of the device, and the water outlet direction of the other group of water outlets 13B is roughly parallel to the direction of movement of the device, and the two water outlets 13B in each group are arranged on both sides of the center line of the device's direction of movement and are symmetrical to each other. This embodiment ensures that the water outlets 13B are coordinated with the overall balance and stability of the equipment by symmetrically arranging the water outlets 13B on both sides of the center line of the equipment's movement direction. At the same time, when the water outlets 13B spray water, the movement balance of the equipment can be ensured when the water outlets 13B drain water. At the same time, the ability of the equipment to turn during operation can be increased by separately controlling the water spraying volume of different water outlets 13B.

[0037] It is worth mentioning that when there are multiple water outlets 13B, for example, there are two water outlets 13B, at this time, the two outlets can be driven to rotate synchronously by the adjusting mechanism 13C to switch between the first state and the second state, or the two outlets can be driven to rotate asynchronously by the adjusting mechanism 13C to switch between the first state and the second state, that is, the two water outlets 13B rotate independently of each other.

[0038] In some embodiments, as shown in FIG2 , there are two water spouts 13B, and the fluid pumping device 13A has two outlets. The two water spouts 13B are movably connected to the two outlets of the fluid pumping device 13A in a one-to-one correspondence. The adjustment mechanism 13C includes a drive motor C1 and a transmission assembly C2. The two water spouts 13B are axially linked and fixed via the transmission assembly C2. The drive motor C1 is in transmission connection with the transmission assembly C2. When the drive motor C1 rotates, the two water spouts 13B rotate synchronously between the first state and the second state. In this embodiment, the rotational motion of the drive motor C1 is simultaneously transmitted to the two water spouts via the transmission assembly C2, causing the two water spouts 13B to rotate simultaneously to achieve the transition between the first state and the second state.

[0039] As shown in Figure 3, in one embodiment, fluid pumping device 13A includes a water pump 131A and a water outlet pipe 132A. Water pumped by water pump 131A enters water outlet pipe 132A under the force of water pump 131A. Water outlet pipe 132A is provided at the end with at least one outlet 133A, which serves as the outlet of fluid pumping device 13A. For ease of understanding, the outlet of fluid pumping device 13A will be referred to as the outlet of water outlet pipe 132A, and the two outlets of fluid pumping device 13A will be referred to as the two outlets of water outlet pipe 132A.

[0040] Specifically, embodiments of the movable connection between the water spout 13B and the outlet of the fluid pumping device 13A include, but are not limited to, a rotational connection. For example, referring to FIG3 , the outlet of the water outlet pipe 132A is provided with a sealing groove 134A, and the opening at one end of the water spout 13B is provided with a flange 133B. The flange 133B is configured to be inserted into the sealing groove 134A to achieve a rotational connection between the water spout 13B and the outlet. Specifically, the rotation of the flange 133B within the sealing groove 134A allows the water spout 13B to rotate relative to the outlet of the fluid pumping device 13A, thereby sealingly connecting the water spout 13B to the outlet of the fluid pumping device 13A.

[0041] Furthermore, the specific embodiment of the rotational connection between the water spout 13B and the outlet of the fluid pumping device 13A is not limited. For example, the water spout 13B and the outlet of the fluid pumping device 13A may also be connected via a rotary joint. Specifically, the rotary joint typically includes internal and external rotating parts, with the internal part connected to the water spout 13B and the external part connected to the outlet of the fluid pumping device 13A. The internal and external parts may be connected via a bearing or other rotating mechanism to achieve relative rotation, thereby achieving the rotational connection between the water spout 13B and the outlet of the fluid pumping device 13A. Of course, in practice, other rotational connection structures may also be used between the water spout 13B and the outlet of the fluid pumping device 13A, and the presently disclosed embodiments are not limited thereto.

[0042] As shown in FIG4 , in some embodiments, a water outlet 13B includes an inlet and an outlet that are connected, and the inlet of the water outlet 13B is rotatably connected to the outlet of the fluid pumping device 13A; the transmission assembly C2 includes a first transmission assembly C21, and the first transmission assembly C21 includes: a worm C211, a right bevel gear C212, a left bevel gear C213, a connecting rod C214 and a connecting pipe C215, the worm C211 is connected to the shaft of the drive motor C1, the worm C211, the right bevel gear C212 and the left bevel gear C213 are meshed and connected in sequence, one end of the connecting rod C214 is fixedly connected to the left bevel gear C213, and the other end of the connecting rod C214 is vertically connected to the middle position of the connecting pipe C215, and both ends of the connecting pipe C215 are respectively fixedly connected to the two water outlets 13B, and the connecting pipe C215 is connected to the shaft of the left bevel gear C213. In parallel, the two water outlets 13B are on the same axial direction as the left bevel gear C213, realizing axial linkage and fixation. When the driving motor C1 rotates, the driving worm C211 rotates synchronously. The rotation of the worm C211 drives the right bevel gear C212 to rotate, and the right bevel gear C212 drives the left bevel gear C213 to rotate. Since the connecting rod C214 is fixedly connected to the left bevel gear C213, the rotation of the left bevel gear C213 drives the connecting rod C214 to rotate synchronously along the rotation axis of the left bevel gear. The two ends of the connecting pipe C215 are respectively connected to the two water outlets 13B, and the middle position is fixedly connected to the connecting rod C214. When the connecting rod C214 rotates, the connecting pipe C215 and the two water outlets 13B also rotate synchronously along the rotation axis of the left bevel gear, thereby realizing the synchronous steering transformation of the two water outlets 13B. In this embodiment, the water outlet 13B is driven to rotate synchronously by the transmission connection between the drive motor C1 and the first transmission component C21, so that the water outlet 13B can not only rotate to the first state and the second state, but also can rotate to any position between the first state and the second state, that is, the steering angle of the water outlet 13B can be selected to be 0-±90°.

[0043] In combination with the application scenario, if the device moves on the bottom or wall of the pool, the drive motor C1 is controlled to rotate in the first direction to drive the two water outlets 13B to rotate to the first state, so that the water spraying direction of the water outlet 13B is roughly perpendicular to the movement direction of the water cleaning device; if the device moves on the water surface, the drive motor C1 is controlled to rotate in the second direction to drive the two water outlets 13B to rotate to the second state, so that the water spraying direction of the water outlet 13B is roughly parallel to the movement direction of the water cleaning device; the above first direction and second direction can be the same or opposite.

[0044] This embodiment achieves the purpose of having a single drive motor C1 drive the two water outlets 13B to rotate synchronously, so that the two water outlets 13B can be switched to the first state or the second state at the same time, or the two water outlets 13B can be switched to any position between the first state and the second state at the same time; in addition, since the worm C211, the right bevel gear C212, and the left bevel gear C213 rotate in one direction, when the drive motor C1 stops rotating, it can lock the water outlet 13B, so that the water outlet 13B remains in a stable state.

[0045] See Figure 5. In some embodiments, the water outlet 13B has a connected inlet and outlet, the axes of the two outlets coincide, the diameter of the inlet of the water outlet 13B is larger than the diameter of the outlet of the fluid pumping device 13A, and is rotatably sleeved on the outlet of the fluid pumping device 13A. For example, the water outlet 13B can be sleeved on a telescopic tube; the transmission assembly C2 includes a second transmission assembly C22, and the second transmission assembly C22 includes: a worm C221, a worm wheel C222 and a connecting rod C223. The worm C221 is engaged with the worm wheel C222, and the connecting rod C223 is axially fixedly connected to the worm wheel C222, and the two ends of the connecting rod C223 are respectively fixedly connected to the two water outlets 13B to achieve axial linkage and fixation of the two water outlets 13B. The drive motor C1 is connected to the shaft of the worm C221. When the drive motor C1 rotates, the transmission assembly transmits the rotational motion to the two water outlets 13B, causing them to rotate synchronously. Specifically, the worm C221 rotates synchronously with the output shaft of the drive motor C1. The rotation of the worm C221 drives the worm wheel C222 to rotate. The connecting rod C223 is axially fixedly connected to the worm wheel C222. Therefore, the worm wheel C222 drives the connecting rod C223 to rotate together, thereby driving the two water outlets 13B at both ends of the connecting rod C223 to rotate synchronously.

[0046] As shown in FIG6 , a cylindrical surface is provided between the two openings of the water spout 13B. A limiting strip is provided on the outer wall of the water outlet pipe 132A, which abuts against the inner wall of the cylindrical surface where the water spout 13B is located. The relative friction between the inner wall of the cylindrical surface and the limiting strip causes the inlet of the water spout to be sealed against the outer wall of the water outlet 132A. Thus, while the water spout 13B is sealed against the water outlet pipe 132A, it can also rotate relative to the outlet of the water outlet, thereby achieving a rotational connection between the water spout 13B and the fluid pumping device 13A. Obviously, compared to the rotational connection, the rotation of the water spout 13B in this embodiment is limited by the diameter of the opening. Optionally, the radial turning angle of the water spout 13B at the outlet of the fluid pumping device 13A can be selected to be 0-±40°. Thus, with the outlet axis of the fluid pumping device 13A as the center, the water spout 13B can rotate radially along the connecting rod C223 by a maximum of ±20°.

[0047] Of course, other rotating sleeve structures can also be used between the water spray port 13B and the outlet of the fluid pumping device 13A, and are not limited to the above-mentioned embodiments. The embodiments of the present disclosure do not impose any restrictions on this.

[0048] In one embodiment, if the device is moving on the bottom or wall of a pool, the drive motor C1 is controlled to rotate in a first direction to drive the two water outlets 13B to rotate 20° toward the first state direction, so that the water spray direction of the water outlets 13B is maximally perpendicular to the direction of movement of the water cleaning device. If the device is moving on the water surface, the drive motor C1 is controlled to rotate in a second direction to drive the two water outlets 13B to rotate 20° toward the second state direction, so that the water spray direction of the water outlets 13B is maximally perpendicular to the direction of movement of the water cleaning device. The first direction and the second direction can be the same or opposite.

[0049] Similar to the above-mentioned rotational connection embodiment, since the worm C221 and the worm wheel C222 rotate in one direction, when the drive motor C1 stops rotating, it can lock the water outlet 13B, so that the water outlet 13B remains in a stable state; in addition, this embodiment also achieves the effect of a single drive motor C1 driving the two water outlets 13B to rotate synchronously, so that the two water outlets 13B can rotate between the first state and the second state.

[0050] As shown in Figure 7, in some embodiments, there are two water outlets 13B, including a first water outlet 131B and a second water outlet 132B. The adjustment mechanism 13C includes: a drive motor C1 and a transmission assembly C2, and there are two of each. The first and second water outlets 132B are each driven by a drive motor C1 and a transmission assembly. Specifically, the two drive motors C1 include a first drive motor and a second drive motor, and the two transmission assemblies C2 include a first transmission assembly and a second transmission assembly. The first water outlet 131B is driven by the first drive motor and the first transmission assembly, and the second water outlet 132B is driven by the second drive motor and the second transmission assembly. Here, the two water outlets 13B are independently driven by the two drive motors to rotate, so that the two water outlets 13B can achieve the effect of asynchronous rotation.

[0051] The movable connection between the water outlet 13B and the outlet of the fluid pumping device 13A includes a rotating connection or a rotating sleeve connection. For details, please refer to the above embodiment and will not be repeated here.

[0052] As shown in Figure 7, each water outlet 13B has an inlet and an outlet that are connected, and the axes of the two outlets are at an angle or approximately perpendicular. The fluid pumping device 13A has two outlets, and the inlets of the first and second water outlets are respectively rotatably connected to the two outlets of the fluid pumping device 13A; each transmission assembly C2 includes two gears, namely a first gear and a second gear, the first gear is fixedly connected to a water outlet, and the second gear is connected to a drive motor, and the first gear and the second gear are engaged to enable the drive motor to drive the corresponding water outlet to rotate. Preferably, the first gear and the second gear are cross-axis gears or staggered axis gears. For example, each transmission assembly C2 includes a first bevel gear C231 and a second bevel gear C232, the second bevel gear C232 is axially fixedly connected to the water outlet 13B, the first bevel gear C231 is connected to a drive motor shaft, and the first bevel gear C231 and the second bevel gear C232 are engaged. Specifically, the first bevel gear C231 is connected to the output shaft of the drive motor C1. When the drive motor C1 rotates, the first bevel gear C231 rotates synchronously. The rotation of the first bevel gear C231 drives the second bevel gear C232 to rotate. Since the water outlet 13B is axially fixedly connected to the second bevel gear C232, the water outlet 13B will rotate synchronously with the second bevel gear C232, thereby achieving the effect of a single drive motor C1 driving a water outlet 13B to rotate independently through a transmission assembly. In addition, in this embodiment, the steering angle of each water outlet 13B can be between 0° and ±90°, that is, the two water outlets 13B can independently rotate to a first state and a second state. In addition, the two water outlets 13B can also rotate to positions outside the first state and the second state, for example, to a position between the first state and the second state, or to a position outside the first state and the second state.

[0053] In one embodiment, if the device moves on the bottom or wall of the pool, the two drive motors C1 are controlled to rotate in a first direction to drive the two water outlets 13B to rotate to a first state, so that the water spraying direction of the water outlet 13B is roughly perpendicular to or more inclined to the vertical direction of the movement of the water cleaning device; if the device moves on the water surface, the two drive motors C1 are controlled to rotate in a second direction to drive the two water outlets 13B to rotate to a second state, so that the water spraying direction of the water outlet 13B is roughly parallel to or more inclined to the parallel direction of the movement of the water cleaning device, wherein the above first direction and second direction can be the same or opposite; if the device tilts on the water surface, the drive motor C1 on the relatively sinking side can be controlled to drive the corresponding one of the water outlets 13B to turn to the position of the second state, and the drive motor C1 on the relatively floating side can be controlled to drive the corresponding other water outlet 13B to turn to the position of the first state, so as to adjust the center of gravity of the device and try to restore the balance of the device. Alternatively, the posture of the device can be adjusted by adjusting the water flow rate of the two water nozzles 13B; in addition, the machine can be controlled to turn, turn around, etc. by adjusting the direction and water output of the two water nozzles 13B.

[0054] It can be seen that this embodiment uses two drive motors C1 to independently drive the two water outlets 13B to rotate, so as to achieve the effect of asynchronous rotation of the two water outlets 13B. In addition to being able to independently turn to the first state and the second state to adapt to cleaning at different positions, the asynchronous rotation of the two water outlets 13B can also be used to adjust the center of gravity of the equipment, thereby assisting the equipment in posture adjustment in some scenarios.

[0055] As shown in Figures 8 and 9, in some embodiments, there are two water outlets 13B, including a first water outlet 131B and a second water outlet 132B. The adjustment mechanism 13C includes: a drive motor C1 and a transmission assembly. The number of drive motors C1 is one. The transmission assembly includes a fourth transmission group C24. The fourth transmission group includes a worm C241, a first gear group C242, a second gear group C243 and a clutch assembly C244. The worm C241 is connected to the shaft of the drive motor C1, the first gear group C242 is fixedly connected to the first water outlet 131B in an axial linkage, and the second gear group C243 is fixedly connected to the first water outlet 131B in an axial linkage. The clutch assembly C243 is axially linked and fixedly connected to the second water outlet 132B. The clutch assembly C244 is transmission-disposed between the worm C241 and the first and second gear sets C243. When the clutch assembly C244 is engaged with the first gear set C242, the drive motor C1 drives the first water outlet 131B to rotate independently via the clutch assembly C244 and the first gear set C242. When the clutch assembly C244 is engaged with the second gear set C243, the drive motor C1 drives the second water outlet 132B to rotate independently via the clutch assembly C244 and the second gear set C243. In this embodiment, not only can the two water outlets rotate asynchronously, but also can the two water outlets rotate synchronously. That is, when the clutch assembly C244 is simultaneously engaged with the first and second gear sets C242 and C243, the drive motor C1 drives the first and second water outlets 132B to rotate synchronously via the clutch assembly C244 and the first and second gear sets C243. It can be seen that in the embodiment of the present disclosure, the output end of the driving motor is respectively connected to the first gear set and the second gear set through the clutch assembly, and the driving motor can drive the first gear set and the second gear set selectively or simultaneously.

[0056] The connection between the two water spray ports and the outlet of the fluid pumping device 13A includes the aforementioned rotary connection and rotary sleeve connection, which will not be described in detail here.

[0057] 8 and 9 , the first gear set C242 includes a first worm gear C2421, a first connecting rod C2422 and a first connecting pipe C243, one end of the first connecting rod C2422 is connected to the first worm gear C2421, and the other end is connected to one end of the first connecting pipe C243, and the other end of the first connecting pipe C243 is connected to the first water outlet 131B; similarly, the second gear set C243 includes a second worm gear C2431, a second connecting rod C2432 and a second connecting pipe C2433, one end of the second connecting rod C2432 is connected to the second worm gear C2431, and the other end is connected to one end of the second connecting pipe C2433, and the other end of the second connecting pipe C2433 is connected to the second water outlet 132B.

[0058] In addition, as shown in Figure 10, in one embodiment, the clutch assembly C244 includes a first gear C2441, a second gear C2442, an electromagnet C2443 and an elastic member C2444, there are two first gears C2441, the second gear C2442 is arranged between the two first gears C2441, the first gear C2441 is a hollow structure and has an opening at one axial end, the other axial end of the first gear C2441 is provided with a first bevel tooth, and an iron absorption plate C2445 is provided on the inner side of the first gear C2441 close to the bevel tooth, the outer periphery of the first gear C2441 is provided with a first helical tooth, there are two electromagnets C2443, and they are fixedly arranged at intervals at positions on the device corresponding to the axial direction of the first gear C2441, the first bevel teeth of the two first gears C2441 are arranged facing each other, and each is sleeved. Connected to an electromagnet C2443, an elastic member C2444 is installed between the electromagnet C2443 and the magnet. This elastic member C2444 is in a compressed state. The first bevel teeth of the two first gears C2441 respectively mesh with the two worm gears. The second gear C2442 is provided with second bevel teeth at both axial ends and on the outer periphery. The second bevel teeth engage with the first bevel teeth and mesh with the second bevel teeth. The second bevel teeth mesh with the worm C241, which is connected to the shaft of the drive motor C1. When the electromagnet C2443 attracts the magnet plate C2445, the first bevel teeth on the first gear C2441 separate from the second bevel teeth on the second gear C2442. When the electromagnet C2443 releases the magnet plate C2445, the first bevel teeth on the first gear C2441 separate and mesh with the second bevel teeth on the second gear C2442. The elastic member C2444 is preferably a spring.

[0059] The operating principle of the rotation of the two water outlets 13B is as follows: the rotation of the drive motor C1 drives the worm gear C241, which in turn drives the first gear C2441. When the electromagnet C2443 releases the magnetic plate C2445, the first gear C2441 engages with the second gear C2442. The rotation of the first gear C2441 drives the second gear C2442, which in turn drives the worm gear. Since the connecting rod is fixedly connected to the worm gear, the connecting rod rotates with the worm gear. At the same time, the other end of the connecting rod is connected to the water outlet 13B via a connecting pipe, so the connecting pipe rotates with the connecting rod, thereby driving the rotation of the water outlet 13B, achieving the effect of a single drive motor C1 independently driving each water outlet 13B. In this embodiment, the steering angle of the water outlet 13B can be freely controlled, including but not limited to 0° and ±90°, as well as any angle between 0-±90°.

[0060] This embodiment controls the transmission components corresponding to at least one or two water outlets 13B to be connected to the drive motor C1 through the clutch component C244, so that a single drive motor C1 can independently control the rotation of any water outlet 13B, or drive the two water outlets 13B to rotate synchronously, so that the appropriate rotation mode of the water outlet 13B can be selected according to the actual scenario, thereby increasing the diversity and flexibility of the rotation drive of the water outlet 13B.

[0061] See Figure 11. In some embodiments, there are four water spray outlets 13B, and the four water spray outlets 13B are respectively connected to the outlet fluid of the fluid pumping device 13A. The four water spray outlets 13B are divided into two groups, and each group of water spray outlets 13B consists of two water spray outlets. A valve 134B is provided in each water spray outlet 13B. The water spraying direction of one group of water spray outlets 13B is roughly perpendicular to the movement direction of the water cleaning equipment, and the water spraying direction of the other group of water spray outlets 13B is roughly parallel to the movement direction of the water cleaning equipment. The valve 134B of each group of water spray outlets 13B is connected to the drive motor through a transmission component to realize that the valve 134B of each group of water spray outlets 13B is driven by at least one drive motor, so that the two groups of water spray outlets 13B are opened selectively.

[0062] Referring to Figure 11, the adjustment mechanism 13C includes a drive motor C1 and a transmission assembly C2. There is one drive motor C1, and the transmission assembly C2 includes a fifth transmission assembly C25. The fifth transmission assembly C25 includes: a worm C251, a worm wheel C252 and a connecting rod C253. There is one worm C251 and it is connected to the shaft of the drive motor C1. There are two worm wheels C252 and two connecting rods C253. The two connecting rods C253 are respectively connected to the two worm wheels C252. The two ends of each connecting rod C253 are connected to the two valves 134B of a group of water outlets 13B. The two worm wheels C252 are meshed with each other, and the worm C251 is meshed with one of the worm wheels C252. In this way, when the driving motor C1 rotates, it drives the worm C251 to rotate synchronously. The rotation of the worm C251 drives one of the worm wheels C252 to rotate. Since the two worm wheels C252 are engaged, the other worm wheel C252 also rotates, thereby driving the connecting rod C253 axially connected to the worm wheel C252 to rotate synchronously, and then driving the valves 134B of the two groups of water outlets 13B to rotate synchronously, so that the valves 134B of one group of water outlets 13B are closed, while the valves 134B of the other group of water outlets 13B are opened.

[0063] The embodiment of the present disclosure respectively sets a group of water outlets 13B at the positions of the first state and the second state, and uses the adjustment mechanism 13C to drive the valve 134B of the water outlet 13B to selectively open the two groups of water outlets 13B to meet the operation requirements of the equipment in different states. Compared with the above-mentioned water outlet 13B transformation method, the structure of this embodiment is simpler.

[0064] It's worth noting that there should be at least one fluid pumping device 13A. Referring to the above embodiment, the number of fluid pumping devices 13A can be determined based on the number of water outlets 13B and the desired rotational effect. When there are multiple water outlets 13B, a corresponding number of outlets of the fluid pumping devices 13A are generally required. For example, when there is only one water outlet 13B, there is also only one fluid pumping device 13A. The water outlet 13B is connected to one outlet of the fluid pumping device 13A. More specifically, one water outlet 13B is connected to the outlet of the water outlet pipe 132A. For another example, when there are two water outlets 13B, the number of fluid pumping devices 13A can be one. Specifically, the outlet pipe 132A in the fluid pumping device 13A is designed as a flow channel divided into two to provide two outlets, each of which is connected to a water outlet 13B. Alternatively, the number of fluid pumping devices 13A can be two, and the outlet pipe 132A corresponding to each fluid pumping device 13A has one outlet, thereby providing two independent outlets, each of which is connected to a water outlet 13B. Similarly, when the number of water outlets 13B is four, the number of fluid pumping devices 13A can be one. In this case, the water outlet pipe 132A in the fluid pumping device 13A can be designed as a one-to-four flow channel to provide four outlets, each outlet being connected to a water outlet 13B respectively; or the water outlet pipe 132A can be designed as a one-to-two flow channel to provide two outlets, each outlet being connected to two water outlets 13B at the same time; in addition, the number of fluid pumping devices 13A can also be two. If the water outlet pipe 132A corresponding to each fluid pumping device 13A has one outlet, two independent outlets are provided, each outlet is connected to two water outlets 13B; if the water outlet pipe 132A corresponding to each fluid pumping device 13A has two outlets, four independent outlets are provided, each outlet is connected to one water outlet 13B.

[0065] In addition, in conjunction with the rotation of the water nozzles 13B, when the device supports driving the two water nozzles 13B to rotate asynchronously, the number of fluid pumping devices 13A is preferably two, so that each water nozzle 13B corresponds to an independent fluid pumping device 13A, thereby achieving independent control of the water flow rate and flow rate of each water nozzle 13B. Then, in actual application scenarios, when the device needs to turn on the water surface, the two water nozzles 13B can be used to generate a water flow rate difference. For example, one water nozzle 13B sprays water while the other water nozzle 13B does not spray water, thereby achieving the device turning on the water surface. Alternatively, when the device is at the bottom of the pool, the two water nozzles 13B can be used to generate a water flow rate difference to assist the device in turning, allowing the device to reduce the turning radius. In addition, the posture of the device can be adjusted by adjusting the angle and flow rate of the water nozzles 13B. In addition, when the device has two water nozzles 13B, a single fluid pumping device 13A can also be used, which can effectively reduce the cost of the equipment. At the same time, when the device floats to the surface, since the walking mechanism is not in contact with the ground and therefore cannot provide power for walking, the water nozzle 13B can be driven to spray water to provide power for the device to move. It is understood that in practice, the number of fluid pumping devices 13A can be selected according to product requirements and is not limited in this disclosure.

[0066] In some embodiments, referring to FIG4 , the water cleaning device further comprises a sealed chamber, wherein at least a mounting position for the drive motor C1 and a mounting position for the fluid pumping device 13A are provided within the sealed chamber. The drive motor C1 and the fluid pumping device 13A are disposed within the sealed chamber, while the output shaft of the drive motor C1 and the blades of the fluid pumping device 13A are exposed outside the sealed chamber to provide a waterproof effect and prevent the fluid pumping device 13A and the drive motor C1 from being damaged by water ingress. Of course, the sealed chamber can also be used to house other electronic devices, which is not limited in the present embodiment.

[0067] In the above embodiment, the drive motor C1 transmits power through a connection with the worm. If the worm reaches its limit of rotation, i.e., the water outlet 13B reaches its maximum position, such as the first and second positions, the worm cannot rotate any further, while the drive motor C1 may continue to output power. This could result in excessive load and motor burnout. To avoid this, the drive motor C1 is optimized in this embodiment.

[0068] See Figures 12 and 13. In some embodiments, the drive motor C1 includes a first sleeve C11 and a second sleeve C12. The first sleeve C11 is sleeved on the motor, and the second sleeve C12 is sleeved on the worm. A spring C13 is provided in the first sleeve C11. The two ends of the spring C13 respectively abut against the first sleeve C11 and the output shaft of the drive motor, so that the first sleeve C11 can elastically move along the output shaft direction. The first sleeve C11 is axially connected to the output shaft. The first sleeve C11 and the second sleeve C12 are each provided with a corrugated docking portion C14. The corrugated docking portions C14 on the first sleeve C11 and the second sleeve C12 are meshed with each other. When the worm rotates normally, the corrugated docking portions C14 on the first sleeve C11 and the second sleeve C12 form an engaged transmission under the action of the spring C13. When the worm cannot rotate, the corrugated docking portions C14 on the first sleeve C11 and the second sleeve C12 slide relative to each other. Specifically, the corrugated joints on the first sleeve C11 and the second sleeve C12 are engaged with each other in the axial direction and can slide relative to each other in the circumferential direction. When the worm cannot rotate, the output shaft of the drive motor continues to output, which will cause the first sleeve C11 to rotate relative to the second sleeve C12. Due to the special structure of the corrugated joint, the engagement between them will be broken, and the spring C13 will be further compressed. The first sleeve C11 will rotate relative to the second sleeve C12, and at the same time, a "clicking" sound will be emitted, which is equivalent to an alarm sound and can also prevent the motor from being completely stuck.

[0069] An embodiment of the present disclosure provides a water spraying mechanism 13, which is applied to water cleaning equipment, including: an adjusting mechanism 13C and at least one water spraying outlet 13B, the adjusting mechanism 13C is connected to the at least one water spraying outlet 13B, and can drive the at least one water spraying outlet 13B to transform between a first state and a second state, wherein in the first state, the water spraying direction of the at least one water spraying outlet 13B is roughly perpendicular to the movement direction of the water cleaning equipment, and in the second state, the water spraying direction of the at least one water spraying outlet 13B is roughly parallel to the movement direction of the water cleaning equipment.

[0070] The water spray mechanism provided in this embodiment is achieved by arranging at least one water spray outlet on the device, and these water spray outlets can be controlled by an adjustment mechanism to change the water spray direction. When the device is cleaning at different positions, the water spray outlet can change the appropriate water spray direction according to the position of the device, so that the reverse thrust generated by the water spray outlet when spraying water outward can provide movement assistance for the device, thereby improving the movement performance of the device in water.

[0071] It is worth mentioning that the water spraying mechanism in this embodiment can be applied to water cleaning equipment, such as the water cleaning equipment in the embodiments shown in Figures 1-12 above. Therefore, the water spraying mechanism in this embodiment has the same technical features as the above-mentioned water cleaning equipment. Therefore, the various embodiments of the water spraying mechanism in the above-mentioned water cleaning equipment are also applicable to this embodiment. Please refer to the above-mentioned embodiments for specific contents and will not be repeated here.

[0072] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A water cleaning device, at least comprising: A housing, a filtering mechanism, a water spraying mechanism and a traveling mechanism. At least one water inlet is provided on the housing, and the at least one water inlet is in fluid communication with the inlet of the filtering mechanism. The water spraying mechanism includes a fluid pumping device which is in fluid communication with the outlet of the filtering mechanism and generates a suction force from the water inlet to the water spraying mechanism. It is characterized in that: the water spraying mechanism further includes: at least one water spraying port and an adjusting mechanism. The spraying direction of the at least one water spraying port is adjustably arranged on the device. The adjusting mechanism includes at least one driving motor, and each driving motor is in transmission connection with the at least one water spraying port to drive the at least one water spraying port to change at least between a first state and a second state. In the first state, the spraying direction of the at least one water spraying port is substantially perpendicular to the moving direction of the water body cleaning device. In the second state, the spraying direction of the at least one water spraying port is substantially parallel to the moving direction of the water body cleaning device.

2. The water cleaning device according to claim 1, wherein, The number of the water spraying ports is two. The fluid pumping device has two outlets, and the two water spraying ports are movably connected to the two outlets of the fluid pumping device in one-to-one correspondence. The adjusting mechanism further includes a transmission assembly which is arranged between the driving motor and the two water spraying ports. The two water spraying ports are axially linked and fixed through the transmission assembly. The number of the driving motors is one and is in transmission connection with the transmission assembly. When the driving motor rotates, it drives the two water spraying ports to rotate synchronously between the first state and the second state.

3. The water cleaning device according to claim 2, wherein, The water spraying port has a communicating inlet and outlet, and the axes of the inlet and outlet are substantially perpendicular. The inlet of the water spraying port is rotatably connected to the outlet of the fluid pumping device. The transmission assembly includes: a worm, a worm wheel and a connecting rod. The worm is driven by the driving motor, and the connecting rod is driven by the worm wheel to rotate. A connecting pipe is provided between the water spraying port and the connecting rod.

4. The water cleaning device according to claim 2, characterized in that, The water spraying port has a communicating inlet and outlet, and the axes of the inlet and outlet are substantially coincident. The diameter of the inlet of the water spraying port is different from that of the outlet of the fluid pumping device and is movably sleeved and connected. The periphery of the inlet of the water spraying port and the outlet of the fluid pumping device is sealed and connected. The transmission assembly includes: a worm, a worm wheel and a connecting rod. The worm meshes with the worm wheel, the connecting rod is fixedly connected with the worm wheel, a connecting pipe is provided between the water spraying port and the connecting rod, and the worm is driven by the driving motor, thereby driving the worm wheel and the connecting pipe to drive the two water spraying ports to rotate synchronously.

5. The water cleaning device according to claim 1, characterized in that, The number of the water spraying ports is two. Each water spraying port has a communicating inlet and outlet, and the axes of the inlet and the outlet are substantially perpendicular. The fluid pumping device has two outlets, and the inlets of the first and second water spraying ports are respectively rotatably connected to the two outlets of the fluid pumping device. The adjusting mechanism further includes: a transmission assembly. The number of the transmission assembly and the driving motor are both two. The first and second water spraying ports are respectively driven by one driving motor and one transmission assembly.

6. The water body cleaning device according to claim 5, characterized in that, Each transmission assembly includes a first gear and a second gear. The first gear is fixedly connected with the water spraying port, the second gear is connected with a driving motor, and the first gear and the second gear mesh with each other.

7. The water cleaning device according to claim 1, characterized in that, The number of the water spray nozzles is two, including a first water spray nozzle and a second water spray nozzle; The adjusting mechanism further includes: a transmission assembly. The number of the driving motors is one. The transmission assembly includes a worm, a first gear set, a second gear set and a clutch assembly. The first gear set is connected to the first water spray nozzle, the second gear set is connected to the second water spray nozzle. The output end of the driving motor is respectively drivingly connected to the first gear set and the second gear set through the clutch assembly. The driving motor can selectively or simultaneously drive the first gear set and the second gear set.

8. The water body cleaning device according to claim 7, wherein: The first gear set includes: a first worm gear, a first connecting rod and a first connecting pipe. One end of the first connecting rod is connected to the first worm gear, and the other end is connected to one end of the first connecting pipe. The other end of the first connecting pipe is connected to the first water spray nozzle; The second gear set includes: a second worm gear, a second connecting rod and a second connecting pipe. One end of the second connecting rod is connected to the second worm gear, and the other end is connected to one end of the second connecting pipe. The other end of the second connecting pipe is connected to the second water spray nozzle; The clutch assembly includes: two first gears, a second gear, an electromagnet and an elastic member. The second gear is arranged between the two first gears. The first gear is of a hollow structure and has an opening at one axial end. A first bevel gear is provided at the other axial end of the first gear, and a magnetic attracting plate is provided inside the first gear near the bevel gear. First helical teeth are provided on the outer periphery of the first gear. The number of the electromagnets is two, and they are fixedly arranged at intervals on the device at positions corresponding to the axis of the first gear. The first bevel gears of the two first gears face each other and are respectively sleeved on an electromagnet. An elastic member is provided between the electromagnet and the magnetic attracting plate. The elastic member is in a compressed state. The first helical teeth of the two first gears are respectively meshed with the two worm gears. Second bevel gears are provided at both axial ends of the second gear, and second helical teeth are provided on the outer periphery. The second bevel gears are in clutch cooperation with the first bevel gears, and the second helical teeth are meshed with the worm. The worm is connected to the driving motor shaft. When the electromagnet attracts the magnetic attracting plate, the first bevel gear on the first gear is separated from the second bevel gear on the second gear. When the electromagnet releases the magnetic attracting plate, the first bevel gear on the first gear is engaged with the second bevel gear on the second gear.

9. The water cleaning device according to claim 1, characterized in that, The number of the water spray nozzles is four. The four water spray nozzles are respectively in fluid communication with the outlet of the fluid pumping device. The four water spray nozzles are divided into two groups, with two water spray nozzles in each group. A valve is provided in each water spray nozzle. The spraying direction of one group of water spray nozzles is substantially perpendicular to the moving direction of the water body cleaning device, and the spraying direction of the other group of water spray nozzles is substantially parallel to the moving direction of the water body cleaning device. The valves of each group of water spray nozzles are driven by at least one driving motor to selectively open the two groups of water spray nozzles.

10. The water cleaning device according to claim 9, characterized in that, The adjustment mechanism further includes: a transmission assembly. The number of the drive motors is one. The transmission assembly includes a worm, two worm wheels and two connecting rods. The number of the worms is one, which is connected to the drive motor shaft. The number of the worm wheels and the connecting rods are both two. The two connecting rods are respectively connected to the two worm wheels. Two ends of each connecting rod are correspondingly connected to two valves of a group of water spray nozzles. The two worm wheels are meshed with each other. The worm is meshed with one of the worm wheels.

11. The water cleaning device according to claim 1, characterized in that, The number of the fluid pumping devices is two. Each fluid pumping device includes a water pump and a water outlet pipe. The water pumped by the water pump enters the water outlet pipe under the push of the water pump. At least one outlet is provided at the end of the water outlet pipe. Each outlet is connected to at least one water spray nozzle.

12. The water body cleaning device according to any one of claims 1-11, characterized in that, The drive motor includes a first sleeve and a second sleeve. The first sleeve sleeves the motor. The second sleeve sleeves the worm. A spring is arranged in the first sleeve. Two ends of the spring respectively abut against the first sleeve and the output shaft of the drive motor. The first sleeve is axially connected to the output shaft. Corrugated docking parts which can be meshed with each other are respectively arranged on the first sleeve and the second sleeve.

13. The water cleaning device according to claim 1, wherein, A third state is further included. The third state is different from the first state and the second state. The drive motor can drive the at least one water spray nozzle to change among the first state, the second state and the third state. Wherein the first state is approximately 90° to the movement direction of the cleaning device. The second state is approximately 0° or 180° to the movement direction of the cleaning device. The third state is an acute angle or an obtuse angle to the movement direction of the cleaning device.

14. A water spraying mechanism, applied to a water body cleaning device, comprising: A fluid pumping device, at least one water spray nozzle and an adjustment mechanism. The fluid pumping device pumps water to the at least one water spray nozzle for discharging. The water spray direction of the at least one water spray nozzle is adjustably arranged on the device. The adjustment mechanism includes at least one drive motor. Each of the drive motors is in transmission connection with the at least one water spray nozzle to drive the at least one water spray nozzle to change between a first state and a second state. In the first state, the water spray direction of the at least one water spray nozzle is approximately perpendicular to the movement direction of the water body cleaning device. In the second state, the water spray direction of the at least one water spray nozzle is approximately parallel to the movement direction of the water body cleaning device.

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