A spray head with a cleaning function, a cleaning system and a sink

Abstract

This utility model relates to a spray nozzle, cleaning system, and water tank with a cleaning function. It includes a spray nozzle body, which is cylindrical in shape, and further includes: a first flow channel located within the spray nozzle body for airflow, having a first fluid inlet and a first fluid outlet; a second flow channel located within the spray nozzle body for micro / nano bubble water flow, having a second fluid inlet and a second fluid outlet; a spray surface, the end face of the spraying end of the spray nozzle body, with the first and second fluid outlets respectively provided; and a control component for opening and closing the first and second fluid outlets respectively, wherein when the first fluid outlet is closed, the second fluid outlet is open, and when the first fluid outlet is open, the second fluid outlet is closed. Compared with the prior art, this utility model can not only achieve micro / nano bubble water spraying but also waterless blowing cleaning or water washing followed by air drying.

Description

Technical Field

[0001] This utility model relates to the field of cleaning devices, and in particular to a nozzle with cleaning function, a cleaning system, and a water tank. Background Technology

[0002] Micro / nano bubble water refers to water containing a large number of tiny bubbles with diameters ranging from micrometers (less than 1 μm) to nanometers (less than 100 nm). Due to their extremely small size, these bubbles exhibit different physicochemical properties from ordinary bubbles, and therefore have broad application potential in many fields. For example, Chinese utility model patent ZL201922289262.5 (authorization announcement number CN211355306U) discloses a water tank with a micro-nano bubble water generating device, including a water tank body, a bubble generating nozzle, a controller, and a remote control. The outlet end of the bubble generating nozzle is connected to a connecting pipe, the upper end of which penetrates the bottom of the water tank body and extends into the water tank body. The upper end of the connecting pipe is threadedly connected to a spray head, the spray head has a blind hole with an opening at the lower end, and several spray holes are provided on the side wall of the spray head. The upper end of the spray head has a downward-bent annular water-blocking edge. The inlet of the bubble generating nozzle is connected to a water inlet pipe, and a solenoid valve is installed on the water inlet pipe. The air inlet end of the bubble generating nozzle is connected to an air supply device. The air supply device and the solenoid valve are electrically connected to the controller, and the remote control is wirelessly connected to the controller.

[0003] The aforementioned spray nozzles only achieve the cleaning function by spraying micro-nano bubble water. However, after the items (such as tableware) are cleaned, they need to be drained for a relatively long time under natural conditions. Furthermore, after the micro-nano bubble water is sprayed out of the nozzle, the bubbles inside are easily separated, which affects the cleaning effect of the micro-nano bubble water. Summary of the Invention

[0004] The first technical problem to be solved by this utility model is to provide a multifunctional spray head with cleaning function, which is an improvement over the prior art.

[0005] The second technical problem to be solved by this utility model is to provide a multifunctional spray head with cleaning function that is easy to switch between functions, in contrast to the prior art.

[0006] The third technical problem to be solved by this utility model is to provide a spray nozzle with a cleaning function that can prevent splashing of micro-nano bubble water, in contrast to the prior art.

[0007] The fourth technical problem to be solved by this utility model is to provide a spray head with a good cleaning effect and cleaning function, which is in contrast to the prior art.

[0008] The fifth technical problem to be solved by this utility model is to provide a cleaning system with the above-mentioned nozzle, in contrast to the prior art.

[0009] The sixth technical problem to be solved by this utility model is to provide a water tank with the above-mentioned cleaning system, in contrast to the prior art.

[0010] The technical solution adopted by this utility model to solve at least one of the above-mentioned technical problems is as follows: a spray head with a cleaning function, comprising a spray head body, characterized in that the spray head body is cylindrical in shape, and further comprising:

[0011] The first flow channel is located in the nozzle body and extends through the length of the nozzle body to allow airflow, and has a first fluid inlet for gas to enter and a first fluid outlet for gas to exit.

[0012] The second flow channel is located in the nozzle body and extends through the length of the nozzle body to allow micro-nano bubble water to flow. It has a second fluid inlet for micro-nano bubble water to enter and a second fluid outlet for micro-nano bubble water to exit.

[0013] The nozzle body has an ejection surface and an ejection end face, and the first fluid outlet and the second fluid outlet are respectively provided.

[0014] The control unit is used to open and close the first fluid outlet and the second fluid outlet respectively, and the second fluid outlet is opened when the first fluid outlet is closed, and the second fluid outlet is closed when the first fluid outlet is open.

[0015] Furthermore, it also includes a flow guide with flow guide holes spaced circumferentially around the first and second fluid outlets. When the first fluid outlet is closed and the second fluid outlet is open, gas in the first flow channel is ejected from each flow guide hole along the length of the nozzle body. This creates an air curtain outside the micro-nano bubble water jet as the micro-nano bubble water is ejected from the second fluid outlet and the airflow is blown out from each flow guide hole. This air curtain prevents water from splashing outwards during micro-nano bubble water spraying and also prevents bubbles from precipitating out of the micro-nano bubble water, thus improving the spraying effect of the micro-nano bubble water.

[0016] Furthermore, the control component is a plate movably mounted on the aforementioned ejection surface, and this plate has a control port. When the control component moves to a position where its control port is opposite to the first fluid outlet and the plate blocks the second fluid outlet, the first fluid outlet opens and the second fluid outlet closes. Conversely, when the control component moves to a position where its control port is opposite to the second fluid outlet and the plate blocks the first fluid outlet, the first fluid outlet closes and the second fluid outlet opens. In this way, by moving the control component, the position of the control port is changed, allowing it to be opposite to either the first or second fluid outlet, thus achieving control over the opening and closing of both the first and second fluid outlets.

[0017] Furthermore, the guide member is a sleeve fitted onto the nozzle body's ejection end and located outside the control member. This sleeve at least partially shields the ejection surface circumferentially and has a circumferential gap between it and the ejection surface. The guide holes are circumferentially formed on the sleeve and respectively face the ejection surface. Furthermore, when the first fluid outlet is closed and the second fluid outlet is open, a gap exists between the control member and the first fluid outlet. The gas blown from the first fluid outlet flows through this gap and the aforementioned gap to each guide hole. In this way, when the first fluid outlet is closed and the second fluid outlet is open, an air curtain can be smoothly formed outside the micro / nano bubble water jet.

[0018] Furthermore, the nozzle body is cylindrical in shape, and the aforementioned control component and guide component are integrated into one piece. This integrated piece is a nozzle cap that covers the spray end of the nozzle body. The inner end face of the nozzle cap is parallel to the spray surface, and there is an airflow gap between them for gas passage. A control port is opened in the center of the end wall of the nozzle cap, and the aforementioned guide holes are spaced apart circumferentially outside the control port.

[0019] Furthermore, the nozzle cap can rotate circumferentially around the nozzle body's ejection end and has at least two states: In the first state, the control port is opposite to the first fluid outlet, and the end wall of the nozzle cap blocks the second fluid outlet; in the second state, the control port is opposite to the second fluid outlet, and the end wall of the nozzle cap blocks the first fluid outlet, with the airflow from the first fluid outlet flowing through the airflow gap to each guide hole. Designing the control component and the guide component as a single unit simplifies the nozzle structure, facilitates processing and assembly, and allows the airflow from the first fluid outlet to flow smoothly to each guide hole through the airflow gap. Moreover, rotating the nozzle cap allows the nozzle to switch between various functions. In the first state, gas is blown out from the first fluid outlet, achieving a waterless rinsing function or a water-washed and then air-dried function; in the second state, micro-nano bubble water is ejected from the second fluid outlet, while the airflow from the first fluid outlet is redirected through the airflow gap to each guide hole, forming an air curtain outside the micro-nano bubble water jet.

[0020] Furthermore, the nozzle cap has a circular cross-section. When the nozzle cap is rotated relative to the nozzle body's discharge end, the inner circumferential surface of the nozzle cap guides and engages with the outer circumferential surface of the nozzle body. It also includes a limiting component for positioning the nozzle cap in either the first or second state. This limiting component includes a first limiting member and a second limiting member. At least two first limiting members are circumferentially spaced on the outer circumferential surface of the nozzle body and correspond one-to-one with the first and second states. Each first limiting member extends axially. The second limiting member is located on the inner circumferential surface of the nozzle cap and extends axially. Each first limiting member is either a protrusion or a groove into which the protrusion is inserted, while the second limiting member is the other. When the nozzle cap rotates relative to the nozzle discharge end under external force, the protrusion can slide out of its groove and engage with another groove. The limiting component ensures the nozzle cap remains stable in either the first or second state, guaranteeing the reliability of nozzle function switching.

[0021] Furthermore, the nozzle cap has a circular cross-section. One of the inner circumferential surface of the nozzle cap and the outer circumferential surface of the nozzle body has a circumferentially protruding ring, while the other has a recessed annular groove into which the protruding ring engages and slides back and forth circumferentially. This allows the nozzle cap to rotate smoothly relative to the nozzle body, which helps ensure the reliability of nozzle function switching.

[0022] Furthermore, the second flow channel sequentially includes a first branch channel, a second branch channel, and a third branch channel along the fluid flow direction. The diameter of the first branch channel is larger than that of the third branch channel. A grid is provided at the middle of the second branch channel along its length, and the diameters of the second branch channels on both sides of the grid increase towards the grid. The variation in the diameter of the second flow channel and the placement of the grid stabilize the micro-nano bubble water flowing into the second flow channel, preventing bubble precipitation.

[0023] Furthermore, the diameter of the second fluid outlet end of the third branch channel is abruptly reduced to form a fourth branch channel with a diameter matching that of the second fluid outlet. This enables the formation of atomized micro / nano bubble water, allowing it to be sprayed out in a more stable manner and improving the washing effect.

[0024] Furthermore, the nozzle body is a split structure, comprising a first block, a second block, and a third block sequentially along its length. Each block contains a corresponding portion of a flow channel. It also includes a mounting sleeve, which is fitted onto the second block and the joint between the three blocks, and is detachably connected to both the first and third blocks. This split structure design facilitates cleaning of the nozzle body's interior when flow channels become clogged, simplifying routine maintenance of the nozzle.

[0025] The technical solution adopted to further solve the fifth technical problem mentioned above is: a cleaning system, characterized in that it includes a nozzle with cleaning function as described above.

[0026] Furthermore, it also includes a water inlet channel and an air pump for connecting an external water source to the second fluid inlet. The water inlet channel is sequentially equipped with a water pump and a booster device along the fluid flow direction. The air outlet of the air pump is connected to the first fluid inlet via an air inlet pipe. When the water pump is turned on, the external water source (generally tap water) is pumped into the booster device, where it forms micro-nano bubble water that flows into the second fluid inlet. When the water pump is turned off, no micro-nano bubble water flows into the second flow channel. Similarly, when the air pump is turned on, air enters the first flow channel through the air inlet pipe and the first fluid inlet. When the air pump is turned off, no air enters the first flow channel.

[0027] The technical solution adopted to further solve the sixth technical problem mentioned above is: a water tank, including a tank body, characterized in that the tank body is provided with the above-mentioned cleaning system.

[0028] Compared with existing technologies, the advantages of this invention are as follows: the first flow channel is for airflow, the second flow channel is for micro-nano bubble water flow, and the control component is used to open and close the first and second fluid outlets respectively. When the control component closes the first fluid outlet and opens the second fluid outlet, micro-nano bubble water is sprayed out from the second fluid outlet, allowing for spray washing. Conversely, when the control component opens the first fluid outlet and closes the second fluid outlet, gas is blown out from the first fluid outlet, allowing for waterless washing or water washing followed by air drying. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the water tank structure in an embodiment of this utility model;

[0030] Figure 2 for Figure 1 A structural diagram from another direction;

[0031] Figure 3 This is a schematic diagram of the nozzle structure in an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A structural diagram from another direction;

[0033] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0034] Figure 6 This is an exploded view of a portion of the nozzle structure in an embodiment of this utility model;

[0035] Figure 7 for Figure 6 A structural diagram from another direction;

[0036] Figure 8 This is an exploded view of another partial structure of the nozzle in an embodiment of this utility model;

[0037] Figure 9 for Figure 8 A structural diagram in another direction. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0040] like Figure 1 and Figure 2 As shown, a water tank includes a tank body 1, on which a cleaning system 10 is provided, and the cleaning system 10 includes, as shown in the figure Figures 3-9 The nozzle 2 shown has a cleaning function. The nozzle 2 includes a nozzle body 2a with a columnar shape, a first flow channel 21, a second flow channel 22, a spray surface 20, and a control component.

[0041] Furthermore, the first flow channel 21 is located within the nozzle body 2a and extends through it along its length. This first flow channel 21 allows airflow and has a first fluid inlet 211 for gas entry and a first fluid outlet 212 for gas exit. The second flow channel 22 is located within the nozzle body 2a and extends through it along its length. This second flow channel 22 allows micro / nano bubble water to flow through it and has a second fluid inlet 2201 for micro / nano bubble water entry and a second fluid outlet 2202 for micro / nano bubble water exit. The ejection surface 20 is the ejection end face of the nozzle body 2a, and the first fluid outlet 212 and the second fluid outlet 2202 are respectively provided thereon. A control unit is used to open and close the first fluid outlet 212 and the second fluid outlet 2202 respectively. When the first fluid outlet 212 is closed, the second fluid outlet 2202 is open; conversely, when the first fluid outlet 212 is open, the second fluid outlet 2202 is closed.

[0042] As can be seen from the above, in this invention, the first flow channel 21 is for airflow, and the second flow channel 22 is for micro / nano bubble water flow. The control component is used to open and close the first fluid outlet 212 and the second fluid outlet 2202 respectively. When the control component controls the first fluid outlet 212 to be closed and the second fluid outlet 2202 to be open, micro / nano bubble water is sprayed out from the second fluid outlet 2202, which can be used for spray washing. When the control component controls the first fluid outlet 212 to be open and the second fluid outlet 2202 to be closed, gas is blown out from the first fluid outlet 212, which can be used for waterless washing or water washing followed by air drying.

[0043] Furthermore, it also includes a flow guide with flow guide holes 24. These flow guide holes 24 are circumferentially spaced around the first fluid outlet 212 and the second fluid outlet 2202. When the first fluid outlet 212 is closed and the second fluid outlet 2202 is open, the gas in the first flow channel 21 is ejected from each flow guide hole 24 along the length of the nozzle body 2a. In this way, the micro-nano bubble water is ejected from the second fluid outlet 2202 and the airflow is blown out from each flow guide hole 24, forming an air curtain outside the micro-nano bubble water jet. The formed air curtain can prevent the water from splashing in all directions during micro-nano bubble water spraying and can also prevent bubbles from precipitating out of the micro-nano bubble water, thus improving the spraying effect of the micro-nano bubble water.

[0044] Furthermore, the aforementioned control component is a plate movably mounted on the ejection surface 20, and this plate has a control port 23. When the control component moves to a position where the control port 23 is opposite to the first fluid outlet 212 and the plate blocks the second fluid outlet 2202, the first fluid outlet 212 opens and the second fluid outlet 2202 closes. Conversely, when the control component moves to a position where the control port 23 is opposite to the second fluid outlet 2202 and the plate blocks the first fluid outlet 212, the first fluid outlet 212 closes and the second fluid outlet 2202 opens. In this way, by moving the control component, the position of the control port 23 is changed, allowing the control port 23 to be opposite to either the first fluid outlet 212 or the second fluid outlet 2202, thereby achieving control over the opening and closing of the first and second fluid outlets 212 and 2202. Furthermore, the aforementioned guide member is a sleeve fitted onto the ejection end of the nozzle body 2a and located outside the control member. This sleeve at least partially shields the ejection surface 20 circumferentially and leaves a circumferential gap between it and the ejection surface 20. The aforementioned guide holes 24 are circumferentially formed on the sleeve and respectively face the ejection surface 20. Furthermore, when the first fluid outlet 212 is closed and the second fluid outlet 2202 is open, a gap remains between the control member and the first fluid outlet 212. The gas blown out from the first fluid outlet 212 flows through this gap and the aforementioned opening to each guide hole 24. Thus, when the first fluid outlet 212 is closed and the second fluid outlet 2202 is open, an air curtain can be smoothly formed outside the micro / nano bubble water jet.

[0045] In this embodiment, specifically, as follows: Figure 3 , Figure 5 as well as Figure 6 As shown, the nozzle body 2a is cylindrical in shape. The control component and the guide component are integrated into one piece, which is a nozzle cap 2b covering the discharge end of the nozzle body 2a (i.e., the control component is the central part of the end wall of the nozzle cap 2b, and the guide component is the remaining part of the nozzle cap 2b excluding the central part of the end wall). The inner end face of the nozzle cap 2b is parallel to the discharge surface 20, and there is an airflow gap 9 between them for gas passage (e.g., ...). Figure 5 As shown, a control port 23 is provided in the center of the end wall of the nozzle cap 2b, and the aforementioned guide holes 24 are provided circumferentially spaced outside the control port 23. Furthermore, the nozzle cap 2b can rotate circumferentially about the discharge end of the nozzle body 2a and has at least two states: in the first state, the control port 23 is opposite to the first fluid outlet 212, and the end wall of the nozzle cap 2b blocks the second fluid outlet 2202; in the second state, the control port 23 is opposite to the second fluid outlet 2202, and the end wall of the nozzle cap 2b blocks the first fluid outlet 212, and the airflow from the first fluid outlet 212 flows through the airflow gap 9 to each guide hole 24.

[0046] Designing the control components and flow guides as a single unit simplifies the structure of the nozzle 2, making it easier to process and assemble. The airflow gap 9 allows the airflow from the first fluid outlet 212 to flow smoothly to each flow guide hole 24. Furthermore, rotating the nozzle cap 2b allows the nozzle 2 to switch between various functions. In the first state, gas is blown out from the first fluid outlet 212, achieving a waterless rinsing function or a water-washed and then air-dried function. In the second state, micro-nano bubble water is ejected from the second fluid outlet 2202, while the airflow from the first fluid outlet 212 is redirected through the airflow gap 9 to each flow guide hole 24, forming an air curtain outside the micro-nano bubble water jet.

[0047] like Figure 5 , Figure 6 as well as Figure 7 As shown, the nozzle cap 2b has a circular cross-section. When the nozzle cap 2b is rotated relative to the spray end of the nozzle body 2a, its inner circumferential surface guides and engages with the outer circumferential surface of the nozzle body 2a. It also includes a limiting component for limiting the nozzle cap 2b in either the first or second state. This limiting component includes a first limiting member and a second limiting member. There are at least two first limiting members, circumferentially spaced on the outer circumferential surface of the nozzle body 2a, corresponding one-to-one with the first and second states, and each first limiting member extends axially. The second limiting member is disposed on the inner circumferential surface of the nozzle cap 2b and extends axially. Each first limiting member is either a protrusion 31 or a groove 32 into which the protrusion 31 is inserted, while the second limiting member is the other. Furthermore, when the nozzle cap 2b rotates relative to the spray end of the nozzle 2 under external force, the protrusion 31 can slide out of its groove 32 and engage with another groove 32. The limiting component ensures that the nozzle cap 2b remains stable in either the first or second state, guaranteeing the reliability of nozzle 2 function switching. Preferably, one of the inner circumferential surface of the nozzle cap 2b and the outer circumferential surface of the nozzle body 2a has a circumferentially protruding ring 41, while the other has a concave annular groove 42 for the protruding ring 41 to engage and slide back and forth circumferentially. This allows the nozzle cap 2b to rotate smoothly relative to the nozzle body 2a, which helps ensure the reliability of nozzle 2 function switching.

[0048] Furthermore, such as Figure 5As shown, the second flow channel 22 includes, sequentially along the fluid flow direction, a first branch channel 221, a second branch channel 222, and a third branch channel 223. The diameter of the first branch channel 221 is larger than that of the third branch channel 223. A grid 5 is provided at the middle of the second branch channel 222 along its length, and the diameters of the second branch channels 222 on both sides of the grid 5 increase towards the grid 5. The variation in the diameter of the second flow channel 22 and the placement of the grid 5 stabilize the micro-nano bubble water flowing into the second flow channel 22, preventing bubble precipitation. Furthermore, the diameter of the second fluid outlet 2202 end of the third branch channel 223 decreases sharply to form a fourth branch channel 224 with a diameter matching that of the second fluid outlet 2202. This allows for the formation of atomized micro-nano bubble water, enabling it to be sprayed out in a more stable state and improving the washing effect.

[0049] Preferably, such as Figure 8 and Figure 9 As shown, the nozzle body 2a is a split structure, comprising a first block 2a1, a second block 2a2, and a third block 2a3 along its length. Each block has a corresponding portion of a flow channel inside. It also includes a mounting sleeve 2a4, which is fitted onto the second block 2a2 and the joint between the three blocks, and is detachably connected to both the first block 2a1 and the third block 2a3. This split structure design facilitates cleaning of the interior of the nozzle body 2a when the flow channel becomes blocked, simplifying routine maintenance of the nozzle 2.

[0050] In this embodiment, the grille 5 and the second block 2a2 are integral parts, and sealing gaskets 6 are respectively provided at the joints of the second block 2a2 with the first block 2a1 and the third block 2a3, thereby ensuring the fluid sealing of the nozzle body 2a. In addition, a connecting ring 71 is circumferentially protruding on the outer peripheral surface of the joint end of the first block 2a1, and a connecting groove 72 for the connecting ring 71 to be inserted is recessed on the inner peripheral surface of the corresponding end of the mounting sleeve 2a4. At the same time, a guide groove 81 is also axially recessed on the inner peripheral surface of the mounting sleeve 2a4, and a guide strip 82 that is inserted into the guide groove 81 is radially protruding on the outer peripheral surfaces of the second block 2a2 and the third block 2a3.

[0051] Furthermore, such as Figure 1As shown, the rear side wall of the aforementioned tank 1 has a notch 11 for the nozzle 2 to extend into the tank 1. The aforementioned cleaning system 10 also includes a water inlet channel 12 and an air pump 13 for connecting an external water source with the second fluid inlet 2201. The water inlet channel 12 is sequentially equipped with a water valve 123, a water pump 121, and a pressurization device 122 (specifically a pressurization tank in this embodiment) along the fluid flow direction. The air outlet of the air pump 13 is connected to the aforementioned first fluid inlet 211 through an air inlet pipe 14. When the water pump 121 is turned on, the external water source (generally tap water) is pumped into the pressurization device 122 under the action of the water pump 121. Under the action of the pressurization device 122, micro-nano bubble water is formed and flows into the second fluid inlet 2201. When the water pump 121 is turned off, micro-nano bubble water does not flow into the second flow channel 22. Similarly, when the air pump 13 is turned on, air enters the first flow channel 21 through the first fluid inlet 211 from the air inlet pipe 14; when the air pump 13 is turned off, no air enters the first flow channel 21.

[0052] In summary, the water tank in this utility model has the following functions:

[0053] (1) Water pump 121 is turned on, air pump 13 is turned off, second fluid outlet 2202 is opened and first fluid outlet 212 is closed, nozzle 2 is in the state of spraying atomized micro-nano bubble water, and the atomized micro-nano bubble water can be used to clean the items in the water tank or the water tank itself.

[0054] (2) Water pump 121 is closed, air pump 13 is open, first fluid outlet 212 is opened and second fluid outlet 2202 is closed, nozzle 2 is in the air output state, and the airflow is used to blow and wash the items in the water tank or the water tank itself, and at the same time, it can also achieve air drying after washing.

[0055] (3) Water pump 121 is turned on, air pump 13 is turned on, second fluid outlet 2202 is opened while first fluid outlet 212 is closed, nozzle 2 sprays atomized micro-nano bubble water, and at the same time forms an air curtain outside the atomized micro-nano bubble water jet.

[0056] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. The third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. A spray nozzle with a cleaning function, comprising a spray nozzle body (2a), characterized in that, The nozzle body (2a) is cylindrical in shape and also includes: The first flow channel (21) is located in the nozzle body (2a) and extends through the nozzle body (2a) along its length direction to allow airflow. It has a first fluid inlet (211) for gas to enter and a first fluid outlet (212) for gas to exit. The second flow channel (22) is located in the nozzle body (2a) and extends through the nozzle body (2a) along its length direction to allow micro-nano bubble water to flow. It has a second fluid inlet (2201) for micro-nano bubble water to enter and a second fluid outlet (2202) for micro-nano bubble water to exit. The nozzle body (2a) has an ejection surface (20) and an ejection end face, and the first fluid outlet (212) and the second fluid outlet (2202) are respectively provided. The control unit is used to open and close the first fluid outlet (212) and the second fluid outlet (2202) respectively. When the first fluid outlet (212) is closed, the second fluid outlet (2202) is open, and when the first fluid outlet (212) is open, the second fluid outlet (2202) is closed.

2. The spray nozzle with cleaning function as described in claim 1, characterized in that, It also includes a flow guide with flow guide holes (24) that are spaced circumferentially around the first fluid outlet (212) and the second fluid outlet (2202). When the first fluid outlet (212) is closed and the second fluid outlet (2202) is open, the gas in the first flow channel (21) is ejected from each flow guide hole (24) along the length of the nozzle body (2a).

3. The spray head with cleaning function as described in claim 1 or 2, characterized in that, The control component is a plate movably mounted on the above-mentioned ejection surface (20), and the plate has a control port (23). When the control component moves to the point where the control port (23) is opposite to the first fluid outlet (212) and the plate blocks the second fluid outlet (2202), the first fluid outlet (212) opens and the second fluid outlet (2202) closes. When the control component moves to the point where the control port (23) is opposite to the second fluid outlet (2202) and the plate blocks the first fluid outlet (212), the first fluid outlet (212) closes and the second fluid outlet (2202) opens.

4. The spray nozzle with cleaning function as described in claim 2, characterized in that, The guide member is a sleeve that is fitted on the nozzle body (2a) and located outside the control member. The sleeve at least partially covers the nozzle surface (20) in the circumferential direction and leaves a gap in the circumferential direction between it and the nozzle surface (20). The guide holes (24) are opened in the circumferential direction on the sleeve and are respectively opposite to the nozzle surface (20). When the first fluid outlet (212) is closed and the second fluid outlet (2202) is open, there is a gap between the control member and the first fluid outlet (212). The gas blown out by the first fluid outlet (212) flows to each guide hole (24) through the gap and the aforementioned gap.

5. The spray nozzle with cleaning function as described in claim 2, characterized in that, The nozzle body (2a) is cylindrical in shape. The control component and the guide component are integrated into one piece, which is a nozzle cap (2b) covering the nozzle body (2a) at the discharge end. The inner end face of the nozzle cap (2b) is parallel to the discharge surface (20), and there is an airflow gap (9) between them for gas flow. A control port (23) is provided in the center of the end wall of the nozzle cap (2b), and the guide holes (24) are provided circumferentially outside the control port (23). Furthermore, the nozzle cap (2b) can rotate circumferentially around the nozzle body (2a) and has at least two states: in the first state, the control port (23) is opposite to the first fluid outlet (212), and the end wall of the nozzle cap (2b) blocks the second fluid outlet (2202); in the second state, the control port (23) is opposite to the second fluid outlet (2202), and the end wall of the nozzle cap (2b) blocks the first fluid outlet (212), and the airflow from the first fluid outlet (212) flows through the airflow gap (9) to each guide hole (24).

6. The spray nozzle with cleaning function as described in claim 5, characterized in that, The nozzle cap (2b) has a circular cross-section. When the nozzle cap (2b) is rotated relative to the spray end of the nozzle body (2a), the inner circumferential surface of the nozzle cap (2b) guides and engages with the outer circumferential surface of the nozzle body (2a). The device also includes a limiting component for limiting the nozzle cap (2b) in either the first or second state. This limiting component includes a first limiting member and a second limiting member. At least two first limiting members are provided, spaced circumferentially on the outer circumferential surface of the nozzle body (2a), and engage with the first... The first state corresponds one-to-one with the second state, and each of the first limiting members extends axially. The second limiting member is set on the inner circumferential surface of the above-mentioned nozzle cap (2b) and extends axially. Each of the first limiting members is either a protrusion (31) or a groove (32) into which the protrusion (31) is inserted, while the second limiting member is the other one. When the nozzle cap (2b) rotates relative to the spray end of the nozzle (2) under the action of external force, the protrusion (31) can slide out from the groove (32) where it is located and screw into another groove (32).

7. The spray nozzle with cleaning function as described in claim 5, characterized in that, The nozzle cap (2b) has a circular cross-section. One of the inner circumferential surface of the nozzle cap (2b) and the outer circumferential surface of the nozzle body (2a) is provided with a protruding ring (41) along the circumferential direction, while the other is provided with a recessed annular groove (42) for the protruding ring (41) to be inserted and slide back and forth along the circumferential direction.

8. The spray head with cleaning function as described in claim 1, 2, 4, 5, 6, or 7, characterized in that, The second flow channel (22) includes a first branch channel (221), a second branch channel (222) and a third branch channel (223) in sequence along the fluid flow direction. The diameter of the first branch channel (221) is larger than that of the third branch channel (223). The second branch channel (222) is provided with a grid (5) in the middle along its own length direction. The diameter of the second branch channel (222) on both sides of the grid (5) increases towards the grid (5).

9. The spray nozzle with cleaning function as described in claim 8, characterized in that, The diameter of the second fluid outlet (2202) end of the third branch channel (223) is abruptly reduced to form a fourth branch channel (224) with the same diameter as the orifice size of the second fluid outlet (2202).

10. The spray head with cleaning function as described in claim 1, 2, 4, 5, 6, or 7, characterized in that, The nozzle body (2a) is a split structure, and includes a first block (2a1), a second block (2a2) and a third block (2a3) in sequence along the length direction. Each block has a corresponding part of the corresponding flow channel. It also includes a mounting sleeve (2a4), which is fitted onto the second block (2a2) and the joint of the three blocks. The mounting sleeve (2a4) is detachably connected to the first block (2a1) and the third block (2a3).

11. A cleaning system, characterized in that, Includes a spray head (2) with a cleaning function as described in any one of claims 1 to 10.

12. The cleaning system as described in claim 11, characterized in that, It also includes a water inlet channel (12) and an air pump (13) for connecting an external water source with a second fluid inlet (2201). The water inlet channel (12) is provided with a water pump (121) and a booster device (122) in sequence along the fluid flow direction. The air outlet of the air pump (13) is connected to the first fluid inlet (211) through an air inlet pipe (14).

13. A water tank, comprising a tank body (1), characterized in that, The tank (1) is provided with the cleaning system (10) as described in claim 12.

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