Spray head assembly, water tank assembly and cleaning system

Abstract

The utility model relates to the technical field of cleaning equipment, and discloses a nozzle assembly, a water tank assembly and a cleaning system.The nozzle assembly comprises a shell and an inner core assembly, the shell is provided with a first water inlet, a first installation cavity and an extending opening which are communicated, and the inner core assembly is movably arranged in the first installation cavity and corresponds to the extending opening; the inner core assembly is provided with a water spraying opening which is communicated with the first water inlet through the first installation cavity, the spray head assembly has a first state and a second state, in the first state, water enters the first installation cavity from the first water inlet and flows to the water spraying opening to be sprayed out, and water pressure drives the inner core assembly to move out of the first installation cavity along the stretching-out opening. The inner core assembly retracts into the first mounting cavity along the extending opening. According to the spray head assembly, the inner core assembly is driven to move through water pressure, a power driving source does not need to be additionally arranged, the structural arrangement is simplified, the small-size and light-weight design of the spray head assembly is facilitated, meanwhile, the arrangement cost is reduced, and better economical efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a nozzle assembly, a water tank assembly and a cleaning system. Background Art

[0002] Generally, a sewage tank in a floor washer is spray-washed by arranging a nozzle assembly. In order to increase the spray-washing area, the nozzle assembly can be arranged in a movable form. Specifically, the nozzle assembly is cooperatively installed with a motor, and the motor drives the nozzle assembly to move. During the sliding process of the nozzle assembly, different positions of the sewage tank can be washed, thereby increasing the spray-washing area. However, using a motor to drive the nozzle assembly to move increases the structural complexity on the one hand and the power driving cost on the other hand. Summary of the Utility Model

[0003] In view of this, the utility model provides a nozzle assembly, a separator assembly and a cleaning system to solve the problems of complex structure and high use cost caused by the existing method of driving the nozzle assembly to move by a motor.

[0004] The first aspect of the utility model provides a nozzle assembly, which includes a housing and an inner core assembly. The housing has a first water inlet, a first installation cavity and an extension outlet that communicate with each other. The inner core assembly is movably arranged in the first installation cavity and corresponds to the extension outlet. The inner core assembly has a water spraying port, and the water spraying port communicates with the first water inlet through the first installation cavity. The nozzle assembly has a first state and a second state. In the first state, water enters the first installation cavity from the first water inlet and flows to the water spraying port to be sprayed out, and the water pressure drives the inner core assembly to move out of the first installation cavity along the extension outlet. In the second state, the inner core assembly retracts into the first installation cavity along the extension outlet.

[0005] Beneficial Effects: For the nozzle assembly of the present application, the inner core assembly is movably matched with the housing. When the nozzle assembly is in the first state, water enters the first installation cavity from the first water inlet and flows to the water spraying port to be sprayed out to realize the washing of the utensil to be cleaned, and the water pressure drives the inner core assembly to move out of the first installation cavity along the extension outlet, thereby driving the movement of the water spraying port and realizing the washing of different positions of the utensil to be cleaned, improving the washing efficiency and cleaning strength. When the nozzle assembly is in the second state, the inner core assembly retracts into the first installation cavity along the extension outlet, synchronously driving the water spraying port to reset into the housing, and the housing can protect the inner core assembly. The nozzle assembly of the present application drives the inner core assembly to move through water pressure, without the need to additionally set a power driving source, which not only simplifies the structural setting, is beneficial to the small volume and light weight design of the nozzle assembly, but also reduces the setting cost and has better economy.

[0006] In some embodiments, the inner core assembly includes an inner shell and a spray head. The inner shell is movably disposed in the first installation cavity. The inner shell has a second installation cavity communicating with the first installation cavity and an opening communicating with the second installation cavity. The spray head is disposed in the second installation cavity and the opening. A water spraying port is formed between the outer wall of the spray head and the inner wall of the opening.

[0007] Advantageous effects: With the above arrangement, in the first state, water enters the first installation cavity from the first water inlet, flows through the second installation cavity, and sprays out from the water spraying port. Moreover, the water pressure drives the inner shell to move out of the first installation cavity along the extension port, thereby driving the spray head to move, so as to realize the cleaning of different positions of the ware to be cleaned.

[0008] In some embodiments, the spray head includes a mounting portion and a spray head body. The mounting portion is used for mounting and cooperating with the second installation cavity. The spray head body is fixedly connected to the mounting portion and the spray head body is located at the opening. A gap between the outer side wall of the spray head body and the inner wall of the opening is the water spraying port.

[0009] Advantageous effects: The mounting portion is used for mounting and cooperating with the second installation cavity to realize the installation and fixation of the spray head. The spray head body is used for cooperating with the opening to form the water spraying port.

[0010] In some embodiments, the spray head body is a conical column, and the small head end of the conical column faces the inside of the second installation cavity, and the large head end of the conical column is away from the second installation cavity. The opening is a conical opening matching the conical column. An outward-expanded water spraying port is formed by the cooperation between the conical column and the conical opening.

[0011] Advantageous effects: With the above arrangement, the water spraying port can spray water in an annular outward-expanded shape, so as to increase the flushing area and intensity of the ware to be cleaned, improve the cleaning efficiency, and is particularly suitable for flushing the circumferential wall surface of an annular container.

[0012] In some embodiments, opposite first limiting portions are provided on the inner wall of the second installation cavity. The mounting portion includes opposite elastic buckles, and the opposite elastic buckles are respectively snap-fitted with the opposite first limiting portions.

[0013] Advantageous effects: By providing opposite first limiting portions on the inner wall of the second installation cavity, and the mounting portion includes opposite elastic buckles, the elastic buckles can be snap-fitted with the first limiting portions through the elastic deformation of the elastic buckles. Then, by the elastic buckles restoring deformation, the elastic buckles can be clamped tightly to the first limiting portions without loosening, thereby realizing the snap-fitting and fixing between the spray head and the inner shell.

[0014] In some embodiments, a second limiting portion is further provided on the inner wall of the second installation cavity. The second limiting portion is in abutting cooperation with the end of the installation portion away from the nozzle body, and the elastic buckle is located between the first limiting portion and the second limiting portion.

[0015] Advantageous effects: The setting of the second limiting portion can further limit the inward movement of the nozzle under external impact and ensure the installation position of the nozzle. And the elastic buckle is limited by the second limiting portion so that it can be tightly clamped and fitted with the first limiting portion, which also further enhances the structural installation stability of the entire nozzle.

[0016] In some embodiments, the installation portion further includes a deformation cavity, which is located between the relatively arranged elastic buckles. The deformation cavity is used for the elastic deformation of the elastic buckles.

[0017] Advantageous effects: The setting of the deformation cavity provides space for the elastic deformation of the elastic buckles. When the elastic buckles elastically deform, they can elastically deform towards the inside of the deformation cavity, so that the elastic buckles are easy to be assembled to the first limiting portion and the assembly efficiency is improved. And the setting of the deformation cavity also reduces the weight of the inner core assembly, making the inner core assembly easier to move in the first installation cavity.

[0018] In some embodiments, the nozzle assembly further includes an elastic reset member, which is used to drive the inner core assembly to retract into the first installation cavity.

[0019] Advantageous effects: When the inner core assembly is in the first state, the elastic reset member elastically deforms to store elastic force. When the nozzle assembly stops injecting water and the water pressure disappears, the inner core assembly is driven by the elastic force of the elastic reset member to retract into the first installation cavity, thereby realizing the automatic reset of the inner core assembly without manual operation.

[0020] In some embodiments, the inner core assembly is provided with a third limiting portion. The elastic reset member is a spring sleeved on the outer periphery of the inner core assembly. One end of the spring abuts against the third limiting portion, and the other end of the spring abuts against the inner wall of the extension port.

[0021] Advantageous effects: The spring is elastically compressed to store elastic force when the inner core assembly is in the first state. When the nozzle assembly stops injecting water and the water pressure disappears, the spring drives the inner core assembly to retract into the first installation cavity. And the spring sleeved on the outer periphery of the inner core assembly can play a role in limiting and guiding the deformation direction of the spring through the inner core assembly, avoiding the spring from being skewed and deformed.

[0022] In some embodiments, the inner core assembly is provided with a fourth limiting portion. A limiting ring is arranged along the inner wall of the extension port and extends inside the housing. The fourth limiting portion is used to abut against the limiting ring to limit the maximum displacement of the inner core assembly from moving out.

[0023] Beneficial effects: During the process of the inner core assembly moving out of the first installation cavity, the fourth limiting portion is synchronously driven to move. When the fourth limiting portion abuts against the limiting ring of the outlet, the inner core assembly cannot move further, thereby realizing the limitation of the maximum displacement of the inner core assembly, enabling the cleaning range of the nozzle assembly to be controlled, and at the same time avoiding the situation that the inner core assembly completely escapes from the first installation cavity.

[0024] In some embodiments, the nozzle assembly further includes a first sealing portion, and the first sealing portion is disposed between the inner core assembly and the housing.

[0025] Beneficial effects: The first sealing portion can seal between the inner core assembly and the housing, avoiding the water in the first installation cavity from leaking out along the gap between the inner core assembly and the housing.

[0026] In some embodiments, the nozzle assembly further includes an end cap, the end cap is provided with a second water inlet, the end cap is fixedly connected to the housing and is used to block the first water inlet, and the second water inlet is communicated with the first water inlet.

[0027] Beneficial effects: The end cap can seal the first water inlet. During use, the second water inlet can be connected to a water pipe, and water flows from the second water inlet through the first water inlet into the first installation cavity.

[0028] In some embodiments, the nozzle assembly further includes a second sealing portion, and the second sealing portion is disposed at the connection between the end cap and the housing.

[0029] Beneficial effects: The second sealing portion can seal the connection between the end cap and the housing, avoiding water from leaking out at the connection between the end cap and the housing.

[0030] The second aspect of the present utility model further provides a water tank assembly, including a box body, a separator assembly and the above-mentioned nozzle assembly. The box body has an open mouth, the separator assembly is installed at the open mouth of the box body, the nozzle assembly is disposed on the separator assembly, and the nozzle assembly extends into the interior of the box body in a first state to wash the inner wall of the box body.

[0031] Beneficial effects: In the water tank assembly of the present application, by disposing the nozzle assembly on the separator assembly, when the nozzle assembly is in the first state, it can extend into the interior of the box body to wash the inner wall of the box body, thereby realizing the cleaning of one end of the box body close to the separator assembly and enhancing the cleaning effect.

[0032] A third aspect of the present utility model further provides a cleaning system, including a floor washer, a base station, and the above-mentioned nozzle assembly. The floor washer includes a sewage tank having a drain outlet, and the base station has a docking port. The floor washer can be placed on the base station, and the drain outlet of the sewage tank and the docking port of the base station are correspondingly arranged. The nozzle assembly is installed at the docking port of the base station, and in the first state, the nozzle assembly extends into the interior of the sewage tank through the drain outlet to wash the inner wall of the sewage tank.

[0033] Beneficial effects: In the cleaning system of the present application, by installing the nozzle assembly at the docking port of the base station, when the floor washer is placed on the base station after use, the drain outlet of the sewage tank corresponds to the docking port of the base station, enabling the nozzle assembly to extend into the interior of the sewage tank through the drain outlet to spray and wash the inner wall of the sewage tank, enhancing the cleaning effect. Description of the Drawings

[0034] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 A three-dimensional structural diagram of the nozzle assembly in the second state according to an embodiment of the present utility model;

[0036] Figure 2 A three-dimensional structural diagram of the nozzle assembly in the first state according to an embodiment of the present utility model;

[0037] Figure 3 A sectional view of the nozzle assembly in the second state according to an embodiment of the present utility model;

[0038] Figure 4 A sectional view of the nozzle assembly in the first state according to an embodiment of the present utility model;

[0039] Figure 5 A three-dimensional structural diagram of the nozzle assembly without the nozzle according to an embodiment of the present utility model;

[0040] Figure 6 A front view of the nozzle assembly without the nozzle according to an embodiment of the present utility model;

[0041] Figure 7 A structural diagram of the inner shell according to an embodiment of the present utility model;

[0042] Figure 8Structural schematic diagram of a nozzle according to an embodiment of the present utility model;

[0043] Figure 9 Exploded structural schematic diagram of a water tank assembly according to an embodiment of the present utility model;

[0044] Figure 10 Structural schematic diagram of a cleaning system according to an embodiment of the present utility model.

[0045] Description of reference numerals

[0046] 1. Outer shell; 11. First water inlet; 12. First installation cavity; 13. Extension port; 131. Limiting ring;

[0047] 2. Inner shell; 21. Second installation cavity; 211. First limiting part; 212. Second limiting part; 22. Opening; 23. Third limiting part; 24. Fourth limiting part; 25. First groove;

[0048] 3. Nozzle; 31. Installation part; 311. Elastic buckle; 312. Deformation cavity; 32. Nozzle body; 321. Water spraying port;

[0049] 4. Elastic reset member;

[0050] 5. First sealing part;

[0051] 6. End cover; 61. Second water inlet; 62. Screw post; 63. Second groove;

[0052] 7. Second sealing part;

[0053] 100. Box body; 200. Separator assembly; 300. Floor washer; 301. Sewage tank; 302. Machine body; 303. Floor brush assembly. Detailed implementation manners

[0054] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0055] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0056] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0057] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0058] The following Figures 1 to 10 is combined to describe the embodiments of the present utility model.

[0059] As Figures 1 to 8 shown, according to an embodiment of the present utility model, on the one hand, a spray head assembly is disclosed, which includes a housing 1 and an inner core assembly. Among them, the housing 1 has a first water inlet 11, a first installation cavity 12 and an outlet 13 that communicate with each other. The inner core assembly is movably arranged in the first installation cavity 12 and is correspondingly arranged with the outlet 13. The inner core assembly has a water spray port 321, and the water spray port 321 communicates with the first water inlet 11 through the first installation cavity 12. The spray head assembly has a first state and a second state. In the first state, water enters the first installation cavity 12 from the first water inlet 11 and flows to the water spray port 321 and sprays out, and the water pressure drives the inner core assembly to move out of the first installation cavity 12 along the outlet 13. In the second state, the inner core assembly retracts into the first installation cavity 12 along the outlet 13.

[0060] The spray head assembly of the present application is provided with an inner core assembly movably fitted in the outer shell 1. When the spray head assembly is in the first state, water enters the first installation cavity 12 from the first water inlet 11 and flows to the spray nozzle 321 for spraying to achieve the flushing of the vessel to be cleaned. Moreover, the water pressure drives the inner core assembly to move out of the first installation cavity 12 along the extension port 13, thereby driving the movement of the spray nozzle 321 to achieve the flushing of different positions of the vessel to be cleaned, improving the flushing efficiency and cleaning strength. When the spray head assembly is in the second state, the inner core assembly retracts into the first installation cavity 12 along the extension port 13, synchronously driving the spray nozzle 321 to reset into the outer shell 1, and the outer shell 1 can protect the inner core assembly. The spray head assembly of the present application drives the movement of the inner core assembly through water pressure, without the need to additionally set a power driving source, which not only simplifies the structural setting, is beneficial to the small volume and lightweight design of the spray head assembly, but also reduces the setting cost and has better economy.

[0061] The outer shell 1 can be a cylindrical shell or other three-dimensional geometric shells. In this embodiment, the outer shell 1 is taken as an example of a cylindrical shell for illustration, but it is not limited thereto. The cylindrical cavity inside the cylindrical shell is the first installation cavity 12. One end of the first installation cavity 12 forms the first water inlet 11, and the other end forms the extension port 13. The first water inlet 11, the first installation cavity 12, and the extension port 13 are located on the same central straight line.

[0062] In some embodiments, the inner core assembly includes an inner shell 2 and a spray head 3. Among them, the inner shell 2 is movably arranged in the first installation cavity 12. The inner shell 2 has a second installation cavity 21 communicating with the first installation cavity 12 and an opening 22 communicating with the second installation cavity 21. The spray head 3 is arranged in the second installation cavity 21 and the opening 22, and a spray nozzle 321 is formed between the outer wall of the spray head 3 and the inner wall of the opening 22.

[0063] With the above settings, in the first state, water enters the first installation cavity 12 from the first water inlet 11, flows through the second installation cavity 21 and reaches the spray nozzle 321 for spraying, and the water pressure drives the inner shell 2 to move out of the first installation cavity 12 along the extension port 13, thereby driving the movement of the spray head 3 to achieve the cleaning of different positions of the vessel to be cleaned.

[0064] The shape of the inner shell 2 matches the shape of the first installation cavity 12 of the outer shell 1. In this embodiment, the inner shell 2 is correspondingly also set as a cylindrical shell, but it is not limited thereto. For example, when the first installation cavity 12 is set as a square cavity, the inner shell 2 is also correspondingly set as a square shell.

[0065] The outer wall surface of the inner shell 2 cooperates with the inner wall surface of the first installation cavity 12 so that the inner shell 2 can move in the first installation cavity 12 and the gap between the two is as small as possible to reduce the water leakage in the first installation cavity 12.

[0066] The shape of the second installation cavity 21 matches the shape of the inner shell 2. In this embodiment, the second installation cavity 21 is correspondingly also set as a cylindrical cavity, but it is not limited thereto. For example, when the inner shell 2 is set as a square shell, the second installation cavity 21 is also correspondingly set as a square cavity.

[0067] In some embodiments, the spray head 3 includes an installation part 31 and a spray head body 32. Among them, the installation part 31 is used for installation cooperation with the second installation cavity 21. The spray head body 32 is fixedly connected to the installation part 31 and the spray head body 32 is located at the opening 22. The gap between the outer side wall of the spray head body 32 and the inner wall of the opening 22 is the water spray port 321.

[0068] The installation part 31 is used for installation cooperation with the second installation cavity 21 to realize the installation and fixation of the spray head 3, and the spray head body 32 is used for cooperating with the opening 22 to form the water spray port 321.

[0069] It can be understood that after assembly, there is a clearance fit between the installation part 31 and the inner wall of the second installation cavity 21 to facilitate the water flow in the second installation cavity 21 to flow through the gap to the water spray port 321 between the spray head body 32 and the opening 22 and spray out.

[0070] Optionally, the water spray port 321 formed between the outer side wall of the spray head body 32 and the inner wall of the opening 22 can be an annular, arc-shaped or linear water spray port 321, so that the water sprayed through the water spray port 321 can form an annular, arc-shaped or linear water column.

[0071] It should be noted that the water spray port 321 formed by the gap between the outer side wall of the spray head body 32 and the inner wall of the opening 22 can make the water flow spray out at high pressure, thereby enhancing the flushing force of the water flow on the cleaning surface.

[0072] In some embodiments, the spray head body 32 is a conical column, and the small head end of the conical column faces the inside of the second installation cavity 21, and the large head end of the conical column is far away from the second installation cavity 21. The opening 22 is a conical opening matching the conical column, and the conical column and the conical opening cooperate to form an outward-expanded water spray port 321.

[0073] The above settings can make the water spray port 321 discharge water in an annular outward-expanded shape, so as to increase the flushing area and force on the ware to be cleaned, improve the cleaning efficiency, and is especially suitable for flushing the circumferential wall surface of an annular container.

[0074] For example, if the ware to be cleaned is a sewage tank 301 / sewage bucket or a similar structure, the spray head assembly of the present application can extend into the sewage tank 301 / sewage bucket, and realize the spray flushing of the peripheral wall surfaces of the sewage tank 301 / sewage bucket through the annular outward-expanded water discharge of the water spray port 321, with high cleaning efficiency and force.

[0075] Regarding the specific cooperation between the installation part 31 and the second installation cavity 21, they can be fixed by means such as snap connection, screw connection or integral connection. In this embodiment, the snap connection between the installation part 31 and the inner wall of the second installation cavity 21 is taken as an example for exemplary illustration, but it is not limited thereto.

[0076] For example, opposite first limiting parts 211 are arranged on the inner wall of the second installation cavity 21, the installation part 31 includes opposite elastic buckles 311, and the opposite elastic buckles 311 are respectively snap-fitted with the opposite first limiting parts 211.

[0077] By arranging opposite first limiting parts 211 on the inner wall of the second installation cavity 21, and the installation part 31 includes opposite elastic buckles 311, through the elastic deformation of the elastic buckles 311, the elastic buckles 311 can be snap-fitted with the first limiting parts 211, and then by the elastic buckles 311 restoring deformation, the elastic buckles 311 can be clamped tightly on the first limiting parts 211 without loosening, thereby realizing the snap connection and fixation between the nozzle 3 and the inner shell 2.

[0078] In terms of the specific structure, the two opposite elastic buckles 311 are integrally cylindrical, that is, each elastic buckle 311 is semi-cylindrical. A snap groove is arranged at one end of the elastic buckle 311 facing the nozzle body 32, and the snap groove is suitable for snap-fitting with the first limiting part 211.

[0079] In terms of the specific material, the elastic buckle 311 is made of an elastic material, such as elastic plastic, rubber, etc., and this embodiment does not make specific limitations.

[0080] The first limiting part 211 can be arranged in a fan-shaped block structure. A circular insertion opening for the elastic buckle 311 to insert is formed between the opposite fan-shaped block structures, and a guiding inclined surface is arranged on one side of the first limiting part 211 facing the opening 22. The guiding inclined surface can assist the elastic buckle 311 to insert into the circular insertion opening and reduce the assembly difficulty of the elastic buckle 311.

[0081] In some embodiments, a second limiting part 212 is further arranged on the inner wall of the second installation cavity 21. The second limiting part 212 is in abutting cooperation with one end of the installation part 31 far from the nozzle body 32, and the elastic buckle 311 is located between the first limiting part 211 and the second limiting part 212.

[0082] The arrangement of the second limiting part 212 can further limit the inward movement of the nozzle 3 into the inner shell 2 when impacted by an external force and ensure the installation position of the nozzle 3. And the elastic buckle 311 is limited by the second limiting part 212 so that it can be tightly snap-fitted with the first limiting part 211, which also further enhances the structural installation stability of the entire nozzle 3.

[0083] Preferably, two second limiting portions 212 are provided and are circumferentially staggered with the first limiting portion 211 in the second installation cavity 21, so that the circumferential force on the installation portion 31 is more uniform and the structural stability is better.

[0084] In some embodiments, the installation portion 31 further includes a deformation cavity 312. The deformation cavity 312 is located between the oppositely arranged elastic buckles 311, and the deformation cavity 312 is used for the elastic deformation of the elastic buckles 311.

[0085] The setting of the deformation cavity 312 provides space for the elastic deformation of the elastic buckles 311. When the elastic buckles 311 elastically deform, they can elastically deform towards the inside of the deformation cavity 312, so that the elastic buckles 311 are easily assembled to the first limiting portion 211, improving the assembly efficiency. Moreover, the setting of the deformation cavity 312 also reduces the weight of the inner core assembly, making the inner core assembly easier to move in the first installation cavity 12.

[0086] Specifically, the deformation cavity 312 can be a U-shaped cavity. The open end of the U-shaped cavity is away from the nozzle body 32, and the closed end of the U-shaped cavity is connected to the nozzle body 32. However, the shape of the deformation cavity 312 is not limited thereto and can be adjusted as needed.

[0087] In some embodiments, the nozzle assembly further includes an elastic reset member 4. The elastic reset member 4 is used to drive the inner core assembly to retract into the first installation cavity 12.

[0088] When the inner core assembly is in the first state, the elastic reset member 4 elastically deforms to store elastic force. When the nozzle assembly stops injecting water and the water pressure disappears, the inner core assembly is driven by the elastic force of the elastic reset member 4 to retract into the first installation cavity 12, thereby realizing the automatic reset of the inner core assembly without manual operation.

[0089] The elastic reset member 4 can specifically be a spring, a spring piece or other structures with elastic force. In this embodiment, the elastic reset member 4 is set as a spring for exemplary illustration, but is not limited thereto.

[0090] For example, the inner core assembly is provided with a third limiting portion 23. The spring is sleeved on the outer periphery of the inner core assembly. One end of the spring abuts against the third limiting portion 23, and the other end of the spring abuts against the inner wall of the outlet 13.

[0091] The spring is elastically compressed when the inner core assembly is in the first state to store elastic force. When the nozzle assembly stops injecting water and the water pressure disappears, the spring drives the inner core assembly to retract into the first installation cavity 12. And the spring sleeved on the outer periphery of the inner core assembly can play a role in limiting and guiding the deformation direction of the spring through the inner core assembly, avoiding the spring from being skewed and deformed.

[0092] In this embodiment, the third limiting portion 23 is an annular protrusion provided on the outer periphery of the inner shell 2, and the size of the annular protrusion is larger than the diameter of the spring, such that one end of the spring abuts against the annular protrusion.

[0093] Of course, in some other embodiments, the installation position of the spring can also be adjusted such that one end is connected to the inner wall of the first installation cavity 12 and the other end is connected to the end of the inner shell 2 away from the opening 22. When the inner core assembly is in the first state, the spring is elastically stretched to store elastic force. When the spraying head assembly stops injecting water and the water pressure disappears, the spring elastically contracts to drive the inner core assembly to retract into the first installation cavity 12.

[0094] In some embodiments, the inner core assembly is provided with a fourth limiting portion 24, and a limiting ring 131 is provided along the inner wall of the outlet 13 extending inside the outer shell 1. The fourth limiting portion 24 is used to abut against the limiting ring 131 to limit the maximum displacement of the inner core assembly from moving out.

[0095] During the process of the inner core assembly moving out of the first installation cavity 12, the fourth limiting portion 24 is synchronously driven to move. When the fourth limiting portion 24 abuts against the limiting ring 131 of the outlet 13, the inner core assembly cannot continue to move, thereby realizing the limitation of the maximum displacement of the inner core assembly, enabling the cleaning range of the spraying head assembly to be controlled, and at the same time avoiding the situation where the inner core assembly completely disengages from the first installation cavity 12.

[0096] In this embodiment, the fourth limiting portion 24 is a limiting protrusion provided on the outer wall circumference of the inner shell 2, and the size of the limiting protrusion is larger than the aperture of the outlet 13, such that the limiting protrusion cannot pass through the outlet 13 and abuts against the limiting ring 131 of the outlet 13 to realize the limitation of the inner core assembly.

[0097] The installation position of the fourth limiting portion 24 can be determined according to the distance that the water spraying port 321 needs to move out, and is specifically set according to requirements. This embodiment does not make specific limitations.

[0098] It can be understood that the circumferential dimension of the fourth limiting portion 24 is smaller than the circumferential dimension of the third limiting portion 23, and the distance from the third limiting portion 23 to the opening 22 is greater than the distance from the fourth limiting portion 24 to the opening 22, that is, the fourth limiting portion 24 is arranged on the side closer to the opening 22 to avoid the setting of the third limiting portion 23 affecting the function of the fourth limiting portion 24.

[0099] Preferably, the other end of the spring abuts against the limiting ring 131.

[0100] In some embodiments, the spraying head assembly further includes a first sealing portion 5, and the first sealing portion 5 is provided between the inner core assembly and the outer shell 1.

[0101] The first sealing portion 5 can seal between the inner core assembly and the outer shell 1 to prevent the water in the first installation cavity 12 from leaking out along the gap between the inner core assembly and the outer shell 1.

[0102] Optionally, the first sealing portion 5 may be in the form of an O-ring, a special-shaped ring or a gasket, and no specific limitation is made in this embodiment.

[0103] For the installation of the first sealing portion 5, in this embodiment, the first sealing portion 5 is disposed between the outer wall of the inner shell 2 and the inner wall of the outer shell 1. Specifically, a first groove 25 may be provided on the inner wall of the outer shell 1, or on the outer wall of the inner shell 2, or on both the inner wall of the outer shell 1 and the outer wall of the inner shell 2. The first sealing portion 5 is partially disposed in the first groove 25. In this embodiment, taking the example that the first groove 25 is circumferentially provided only on the outer wall of the inner shell 2, the first sealing portion 5 is partially disposed in the first groove 25 and the other part elastically abuts against the inner wall of the outer shell 1, but is not limited to this setting.

[0104] In terms of the setting quantity, a plurality of first sealing portions 5 may be provided and spaced along the length direction of the inner shell 2 to enhance the waterproof performance between the inner shell 2 and the outer shell 1. In this embodiment, taking two first sealing portions 5 as an example for illustration, but not limited thereto.

[0105] Specifically, the first sealing portion 5 is disposed at one end of the inner shell 2 close to the first water inlet 11 and away from the opening 22, and both the third limiting portion 23 and the fourth limiting portion 24 are located between the opening 22 and the first sealing portion 5.

[0106] In some embodiments, the nozzle assembly further includes an end cap 6. The end cap 6 is provided with a second water inlet 61. The end cap 6 is fixedly connected to the outer shell 1 and is used to block the first water inlet 11, and the second water inlet 61 is communicated with the first water inlet 11.

[0107] The end cap 6 can seal the first inlet. During use, the second water inlet 61 can be connected to a water pipe, and water flows from the second water inlet 61 through the first water inlet 11 into the first installation cavity 12.

[0108] The end cap 6 and the outer shell 1 can be fixed by screws. Specifically, screw posts 62 are provided on the end cap 6, and corresponding screw holes are provided on the outer shell 1. The screws pass through the screw posts 62 and are driven into the screw holes to fix the end cap 6 and the outer shell 1.

[0109] Specifically, the second water inlet 61 is disposed at the center of the end cap 6. A plurality of screw posts 62 are spaced along the circumference of the second water inlet 61, and corresponding screw holes are spaced along the circumference of the first water inlet 11 on the end face of the outer shell 1. The plurality of screw posts 62 and the plurality of screw holes are arranged in one-to-one correspondence to enhance the connection stability between the end cap 6 and the outer shell 1.

[0110] In some embodiments, the nozzle assembly further includes a second sealing portion 7. The second sealing portion 7 is disposed at the connection between the end cap 6 and the outer shell 1.

[0111] The second sealing portion 7 can seal the connection between the end cover 6 and the outer shell 1, preventing water from leaking out at the connection between the end cover 6 and the outer shell 1.

[0112] Optionally, the second sealing portion 7 can be in the form of an O-ring, a special-shaped ring or a gasket, and no specific limitation is made in this embodiment.

[0113] For the installation of the second sealing portion 7, specifically, a second groove 63 can be provided on the side of the end cover 6 facing the outer shell 1, or on the side of the outer shell 1 facing the end cover 6, or simultaneously on the side of the end cover 6 facing the outer shell 1 and the side of the outer shell 1 facing the end cover 6. The second sealing portion 7 is partially arranged in the second groove 63 for installation and fixation. In this embodiment, taking the case where the second groove 63 is only provided on the side of the end cover 6 facing the outer shell 1 as an example for illustration, the second sealing portion 7 is partially arranged in the second groove 63 and the other part elastically abuts against the side of the outer shell 1 facing the end cover 6, but it is not limited to this arrangement.

[0114] To facilitate the understanding of the spray head assembly of this embodiment, the following is an introduction to its usage process:

[0115] When the spray head assembly is in the first state, water flows into the first water inlet 11 from the second water inlet 61, and successively flows through the first installation cavity 12, the second installation cavity 21, and the gap between the outer wall of the installation portion 31 and the inner wall of the second installation cavity 21 to the water spray port 321, and is sprayed out as an outward-expanded conical water column through the annular outward-expanded water spray port 321 to realize the spray washing of the ware to be cleaned. At the same time, under the drive of the water pressure, the inner shell 2 moves out of the first installation cavity 12 along the extension port 13, driving the water spray port 321 to move synchronously, thereby realizing the moving spray washing of the water spray port 321 on the ware to be cleaned, increasing the washing area, and the inner shell 2 is elastically compressed and deformed when moving by squeezing the elastic reset member 4;

[0116] When the spray head assembly is in the second state, the water injection into the spray head assembly is stopped, the water spray port 321 stops spraying water and the water pressure disappears. The elastic reset member 4 resumes deformation and drives the inner shell 2 to retract into the first installation cavity 12 along the extension port 13, thereby driving the water spray port 321 to reset and move to the extension port 13, and the inner core assembly is shielded and protected by the outer shell 1.

[0117] As Figure 9 shown, according to an embodiment of the present invention, on the other hand, a water tank assembly is also disclosed, including a box body 100, a separator assembly 200 and the above-mentioned spray head assembly. Among them, the box body 100 has an open mouth, the separator assembly 200 is installed at the open mouth of the box body 100, the spray head assembly is arranged on the separator assembly 200, and the spray head assembly extends into the interior of the box body 100 in the first state to wash the inner wall of the box body 100.

[0118] For the water tank assembly of the present application, by arranging the nozzle assembly on the separator assembly 200, when the nozzle assembly is in the first state, it can extend into the interior of the box body 100 to wash the inner wall of the box body 100, thereby realizing the cleaning of the end of the box body 100 close to the separator assembly 200 and enhancing the cleaning effect.

[0119] The water tank assembly is usually arranged on a cleaning robot (such as a floor sweeper) to hold sewage. When the cleaning robot finishes cleaning, the water tank assembly can be disassembled, and the inner wall of the box body 100 in the water tank assembly can be washed by using the nozzle assembly.

[0120] The separator assembly 200 is used to block and open the box body 100. Usually, since sewage is likely to deposit on one side of the separator assembly 200, the inner wall of the box body 100 on the side close to the separator assembly 200 is dirtier. Spraying and washing with the nozzle assembly can enhance the cleaning strength of the inner wall of the box body 100.

[0121] As Figure 10 shown, according to an embodiment of the present invention, on the other hand, a cleaning system is also disclosed, including a floor washer 300, a base station, and the above-mentioned nozzle assembly. Among them, the floor washer 300 includes a sewage tank 301, the sewage tank 301 has a drain port, the base station has a docking port, the floor washer 300 can be placed on the base station, and the drain port of the sewage tank 301 and the docking port of the base station are correspondingly arranged. The nozzle assembly is installed at the docking port of the base station, and in the first state, the nozzle assembly extends into the interior of the sewage tank 301 through the drain port to wash the inner wall of the sewage tank 301.

[0122] For the cleaning system of the present application, by installing the nozzle assembly at the docking port of the base station, when the floor sweeper is placed on the base station after use, the drain port of the sewage tank 301 and the docking port of the base station correspond, so that the nozzle assembly can extend into the interior of the sewage tank 301 through the drain port to spray and wash the inner wall of the sewage tank 301, enhancing the cleaning effect.

[0123] The floor washer 300 further includes a body 302 and a floor brush assembly 303. The sewage tank 301 is detachably fixed to the body 302, and the floor brush assembly 303 is arranged at the bottom of the body 302 and the sewage tank 301 for scrubbing and cleaning the ground.

[0124] Since the related structures such as the floor washer 300 and the base station are prior arts, they will not be elaborated in this embodiment.

[0125] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A nozzle assembly, characterized in that: include: The housing (1) has a first water inlet (11), a first installation cavity (12) and a protruding opening (13) which are in communication with each other; an inner core component, movably arranged in the first installation cavity (12) and arranged corresponding to the extension port (13), the inner core component having a water spray port (321), the water spray port (321) communicating with the first water inlet (11) through the first installation cavity (12); The spray head assembly has a first state and a second state. In the first state, water enters the first installation cavity (12) from the first water inlet (11) and flows to the water outlet (321) to be sprayed out, and the water pressure drives the inner core assembly to move out of the first installation cavity (12) along the extension port (13). In the second state, the inner core assembly retracts into the first installation cavity (12) along the extension port (13).

2. The nozzle assembly according to claim 1, characterized in that: The inner core component comprises: An inner shell (2) is movably disposed in the first installation cavity (12), the inner shell (2) having a second installation cavity (21) communicating with the first installation cavity (12), and an opening (22) communicating with the second installation cavity (21); The spray head (3) is arranged in the second installation cavity (21) and the opening (22), and the water spray port (321) is formed between the outer wall of the spray head (3) and the inner wall of the opening (22).

3. The nozzle assembly according to claim 2, characterized in that: The nozzle (3) comprises: A mounting portion (31) for mounting and cooperating with the second mounting cavity (21); The nozzle body (32) is fixedly connected to the mounting portion (31) and is located at the opening (22). The gap between the outer wall of the nozzle body (32) and the inner wall of the opening (22) is the water spray port (321).

4. The nozzle assembly according to claim 3, characterized in that: The nozzle body (32) is a conical column, the small end of the conical column faces the inside of the second installation cavity (21), and the large end of the conical column is away from the second installation cavity (21), the opening (22) is a conical mouth matching the conical column, and the conical column and the conical mouth cooperate to form the outward-expanding water spray outlet (321).

5. The nozzle assembly according to claim 3, characterized in that: The inner wall of the second mounting cavity (21) is provided with a first limiting portion (211) opposite to the inner wall of the second mounting cavity (21), and the mounting portion (31) comprises elastic buckles (311) opposite to the inner wall of the second mounting cavity (21), and the elastic buckles (311) opposite to the inner wall of the second mounting cavity (21) are engaged with the first limiting portion (211) opposite to the inner wall of the second mounting cavity (21).

6. The nozzle assembly according to claim 5, characterized in that: The inner wall of the second mounting cavity (21) is further provided with a second limiting portion (212), the second limiting portion (212) and an end of the mounting portion (31) away from the nozzle body (32) are abutted and matched, and the elastic buckle (311) is located between the first limiting portion (211) and the second limiting portion (212).

7. The nozzle assembly according to claim 5 or 6, characterized in that: The mounting portion (31) further comprises a deformation cavity (312), wherein the deformation cavity (312) is located between the elastic buckles (311) arranged opposite to each other, and the deformation cavity (312) is used for elastic deformation of the elastic buckles (311).

8. The nozzle assembly according to any one of claims 1 to 6, characterized in that: The spray head assembly further comprises an elastic reset member (4), and the elastic reset member (4) is used to drive the inner core assembly to retract into the first installation cavity (12).

9. The nozzle assembly according to claim 8, characterized in that: The inner core component is provided with a third limiting portion (23), and the elastic return member (4) is a spring sleeved on the outer periphery of the inner core component, one end of the spring abuts against the third limiting portion (23), and the other end of the spring abuts against the inner wall of the extension port (13).

10. The nozzle assembly according to any one of claims 1 to 6, characterized in that: The inner core component is provided with a fourth limiting portion (24), and a limiting ring (131) is provided on the inner wall of the extension opening (13) along the interior of the outer shell (1), and the fourth limiting portion (24) is used to abut against the limiting ring (131) to limit the maximum displacement of the inner core component.

11. The nozzle assembly according to any one of claims 1 to 6, characterized in that: The nozzle assembly further comprises a first sealing portion (5), wherein the first sealing portion (5) is arranged between the inner core assembly and the outer shell (1).

12. The spray head assembly according to any one of claims 1 to 6, characterized in that: The spray head assembly further comprises an end cover (6), the end cover (6) being provided with a second water inlet (61), the end cover (6) being fixedly connected to the housing (1) and being used to block the first water inlet (11), the second water inlet (61) being in communication with the first water inlet (11).

13. The spray head assembly according to claim 12, characterized in that: The nozzle assembly further comprises a second sealing portion (7), wherein the second sealing portion (7) is arranged at the connection between the end cover (6) and the housing (1).

14. A water tank assembly, characterized in that: include: A box body (100) having an open opening; A separator assembly (200) installed at the open opening of the housing (100); The spray head assembly according to any one of claims 1 to 13, wherein the spray head assembly is arranged in the separator assembly (200), and in a first state, the spray head assembly extends toward the interior of the box (100) to flush the inner wall of the box (100).

15. A cleaning system, characterized in that: include: A floor scrubber (300) comprises a sewage tank (301), wherein the sewage tank (301) has a drainage port; A base station having a docking port, the floor scrubber (300) being capable of being placed on the base station, and the drainage port of the sewage tank (301) and the docking port of the base station being arranged correspondingly; The nozzle assembly according to any one of claims 1 to 13, wherein the nozzle assembly is installed at a docking port of the base station, and in a first state, the nozzle assembly extends through the drain port into the interior of the sewage tank (301) to flush the inner wall of the sewage tank (301).

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