A nozzle, a cleaning spray head and a spray bar arrangement

Abstract

This invention discloses a nozzle, a cleaning nozzle head, and a spray bar device, including a nozzle body with a water outlet channel, a water outlet, and at least two water inlets. A movable component is provided within the water outlet channel, capable of switching between at least two working positions. When water flows through any of the water inlets, the movable component moves to the working position corresponding to that inlet, forming a water flow path connecting the inlet and the outlet within the water outlet channel, thereby creating a water outlet pattern corresponding to that inlet. When the movable component switches between different working positions, its outer surface moves relative to the inner wall of the water outlet channel to remove scale adhering to the inner wall of the water outlet channel. This invention can simultaneously achieve automatic descaling of the water outlet channel through the movement of the movable component while switching between multiple water outlet patterns.

Description

Technical Field

[0001] This invention relates to the field of bathroom fixtures, and in particular to a nozzle, a cleaning spray head, and a spray bar device. Background Technology

[0002] To ensure accurate cleaning, smart toilet bidet sprayers typically place the water outlet at the very front of the spray bar. However, traditional spray heads often use a "one-hole-one-water-type" design, meaning each outlet can only produce one type of water spray, making it difficult to meet the needs of more cleaning modes. To increase the variety of water patterns, current solutions often add multiple outlets, but this increases the size of the spray head and occupies more space. Furthermore, the smart toilet bidet spray head is a crucial structure for water spray formation. Due to the relatively small shape and flow rate of the cleaning water, the components and water channels of smart toilet bidet spray heads are also small, making them prone to clogging by limescale, leading to incomplete water patterns and functional failure. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a nozzle, cleaning nozzle and spray bar device, which can simultaneously achieve automatic descaling of the water outlet channel through the movement of moving parts while switching between multiple water outlet modes.

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: a nozzle includes a nozzle body, the nozzle body is provided with a water outlet channel, a water outlet and at least two water inlets; a movable member is provided in the water outlet channel, the movable member can switch between at least two working positions; when water is flowing through any water inlet, the movable member can move to the working position corresponding to the water inlet, so that a water flow path connecting the water inlet and the water outlet is formed in the water outlet channel, thereby forming a water outlet pattern corresponding to the water inlet; when the movable member switches between different working positions, its outer surface moves relative to the inner wall of the water outlet channel to peel off the scale adhering to the inner wall of the water outlet channel.

[0005] In a preferred embodiment, at least two working positions include a first working position and a second working position, and at least two water inlets include a first water inlet and a second water inlet; when only the first water inlet is open, the movable member is driven by the water flow to move along the water outlet channel to the first working position, and a first water flow path is formed in the water outlet channel, connecting the first water inlet and the water outlet and flowing through the movable member; when the first water inlet is closed, the movable member is reset to the second working position by gravity and / or the action of the reset member; when the movable member is in the second working position and only the second water inlet is open, a second water flow path is formed in the water outlet channel, connecting the second water inlet and the water outlet.

[0006] In a preferred embodiment, the second water inlet is located on the side of the water outlet channel. When the movable part is in the first working position, the movable part blocks the second water inlet. A check valve is provided in the first water inlet. When only the second water inlet is filled with water, the check valve is closed to prevent the water in the water outlet channel from flowing out of the first water inlet.

[0007] In a preferred embodiment, the first water flow path includes a plurality of rotating channels spaced apart along the circumference of the movable member, the plurality of rotating channels being arranged in the same direction of rotation; when the movable member is in the first working position, the water flows in a rotating manner along the rotating channels and sprays out a first water splash from the outlet; when the movable member is in the second working position, the outlet sprays out a second water splash.

[0008] In a preferred embodiment, the first water flow path further includes a water receiving trough disposed at one end of the movable member axially close to the first water inlet, and a plurality of water distribution channels spaced apart along its circumference. The plurality of water distribution channels are located around the water receiving trough and are connected to the water receiving trough. At one end of the movable member axially away from the first water inlet, there are a plurality of rotating channels and a converging trough located between the rotating channels. The converging trough is connected to each rotating channel. The plurality of rotating channels correspond one-to-one with the plurality of water distribution channels, and the corresponding rotating channels and water distribution channels are connected to each other through a connecting channel disposed on the outer side of the movable member.

[0009] In a preferred embodiment, the nozzle body has a transition cavity between the water outlet channel and the water outlet. The water outlet channel has a central hole that connects to the transition cavity and a plurality of diversion holes distributed around the central hole. The central hole is disposed opposite to the water outlet. When the movable part is in the first working position, the movable part blocks each diversion hole. When the movable part leaves the first working position, the movable part opens each diversion hole.

[0010] In a preferred embodiment, a guide structure is provided between the movable component and the water outlet channel to restrict the circumferential rotation of the movable component and guide its movement along the water outlet channel; the guide structure includes at least one set of guide grooves and guide ribs, the guide grooves are provided on one of the outer peripheral surface of the movable component and the inner wall of the water outlet channel, and the guide ribs are provided on the other, the guide grooves and guide ribs extend along the axial direction of the movable component, and each set of guide ribs slides in accordance with the guide grooves.

[0011] In a preferred embodiment, the nozzle body includes a water outlet and a nozzle body. The nozzle body has a water outlet channel. The first end of the water outlet channel in the axial direction has a central hole and a plurality of diversion holes, and the second end has a first water inlet. The second water inlet is located on the radial side wall. The water outlet has a water outlet and is connected to the first end of the nozzle body in the axial direction to form a transition cavity.

[0012] In a preferred embodiment, the system further includes a flow guide, which is sealed to the first inlet and has a flow acceleration hole that connects to the outlet flow channel; the diameter of the flow acceleration hole is smaller than the diameter of the first inlet.

[0013] In a preferred embodiment, the second inlet is located on the side of the outlet channel, and the end of the movable part away from the first inlet is provided with a guide slope that is inclined toward the side of the outlet channel.

[0014] The present invention also provides a cleaning nozzle, including a nozzle body; and a nozzle of the present invention; the nozzle body is provided with a fixing groove and at least two water inlet channels, the nozzle is installed in the fixing groove, and the at least two water inlet channels are connected to at least two water inlets; the spray bar is provided with at least two water supply channels, and the at least two water supply channels are connected to at least two water inlet channels; and a switching component is provided, which is disposed on the spray bar or the fixing base, for controlling the on / off of each water supply channel.

[0015] The present invention also provides a spray bar device, including a spray bar and a fixed base, the spray bar being slidably disposed on the fixed base, and further including the cleaning nozzle of the present invention, the cleaning nozzle being disposed at the water outlet end of the spray bar.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention provides a movable component within the water outlet channel of the nozzle body, capable of switching between at least two working positions. This allows the water outlet channel to automatically form a corresponding water flow path based on the water flow status of the inlet, enabling the switching of multiple water outlet modes without the need for additional outlets. Furthermore, during the switching process, the movable component moves relative to the inner wall of the water outlet channel. By utilizing the scraping, friction, and squeezing action between its surface and the inner wall of the water outlet channel, scale adhering to the inner wall of the water outlet channel is removed. The scale is then carried away by the water flow during subsequent water outlet processes. Thus, the water outlet channel can be self-cleaned while completing the water outlet mode switching, eliminating the need for additional descaling structures or independent cleaning mechanisms. This achieves functional integration and structural integration.

[0018] 2. The present invention enables the movable part to move to the first working position by the water flow when only the first water inlet is filled with water, and after the water inlet is cut off, the movable part is reset to the second working position by gravity and / or the reset component. Thus, the switching of the working position of the movable part is driven by the water pressure and gravity and / or the reset component, eliminating the need for a motor or complex drive mechanism and significantly simplifying the structure.

[0019] 3. In this invention, the second water inlet is located on the side of the water outlet channel. When the movable part is in the first working position, the movable part blocks the second water inlet. A check valve is provided in the first water inlet, so as to prevent water from flowing back from the water outlet channel to the other water inlet when water enters the first water inlet.

[0020] 4. The present invention provides a rotating flow channel on the movable part, so that the water flows along the rotating flow channel when the movable part is in the first working position and sprays out the first water splash from the outlet. When the movable part is reset to the second working position, the outlet sprays out the second water splash. Thus, the position of the movable part can be changed to switch between the first water splash and the second water splash to meet different cleaning needs.

[0021] 5. The nozzle body has a transition cavity between the water outlet channel and the water outlet. The water outlet channel has a central hole connecting the transition cavity and multiple diversion holes distributed around the central hole. When the movable part is in the second working position, the movable part can open each diversion hole. When water is introduced into the second water inlet, the water flow is evenly dispersed through the diversion holes and then flows into the transition cavity, thereby forming a stable and concentrated columnar water flow. This avoids the problems of water flow eccentricity and uneven spray caused by lateral water inlet. When the movable part is in the first working position, the movable part blocks each diversion hole. The water flow rotates along the rotating channel and flows through the central hole to the water outlet, thereby avoiding the diversion holes from interfering with the formation of rotating and diffused water.

[0022] 6. A guide structure is provided between the moving part and the water outlet channel to restrict the circumferential rotation of the moving part and guide its movement along the water outlet channel, so as to ensure stable contact between the moving part and the inner wall of the water outlet channel during the movement of the moving part and ensure the descaling effect.

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the nozzle, cleaning nozzle and spray bar device of the present invention are not limited to the embodiments. Attached Figure Description

[0024] Figure 1 This is an exploded view of the cleaning nozzle of the present invention;

[0025] Figure 2 This is a cross-sectional view of the cleaning nozzle of the present invention. Figure 1 ;

[0026] Figure 3 yes Figure 2 Enlarged view of point A;

[0027] Figure 4 This is a cross-sectional view of the cleaning nozzle of the present invention. Figure 2 (Water is flowing through the first inlet);

[0028] Figure 5 yes Figure 4 Enlarged view of point B;

[0029] Figure 6 This is a cross-sectional view of the cleaning nozzle of the present invention. Figure 3 (The moving part is pushed to the first working position by the water flow);

[0030] Figure 7 yes Figure 6 Enlarged view of point C;

[0031] Figure 8 This is a cross-sectional view of the cleaning nozzle of the present invention. Figure 4 (The moving part is reset to the second working position and water enters through the second inlet);

[0032] Figure 9 yes Figure 8 Enlarged diagram of point D;

[0033] Figure 10 This is a three-dimensional structural schematic diagram of the nozzle body of the present invention;

[0034] Figure 11 This is a perspective sectional view of the nozzle body of the present invention;

[0035] Figure 12 This is a three-dimensional structural diagram of the movable component of the present invention. Figure 1 ;

[0036] Figure 13 This is a three-dimensional structural diagram of the movable component of the present invention. Figure 2 (Rotate upwards at an angle);

[0037] Figure 14 This is a three-dimensional structural schematic diagram of the flow guide of the present invention;

[0038] Figure 15 This is a perspective sectional view of the flow guide of the present invention;

[0039] Figure 16 This is a three-dimensional structural diagram of the cleaning nozzle of the present invention with the back facing forward;

[0040] Figure 17 This is a three-dimensional sectional view of the nozzle body of the present invention;

[0041] Figure 18 This is a three-dimensional structural schematic diagram of the spray bar device of the present invention;

[0042] In the diagram: 1. Water outlet; 11. Water outlet; 12. Transition chamber; 2. Nozzle body; 21. Water outlet channel; 211. First channel cavity; 212. Second channel cavity; 22. First inlet; 23. Diverting hole; 24. Center hole; 25. Guide rib; 26. Second inlet; 3. Flow guide; 31. Flow acceleration hole; 32. Check valve; 4. Moving part; 41. Rotating channel; 42. Water receiving trough; 43. Water distribution channel; 44. Converging trough; 45. Guide slope; 46. Connecting channel; 47. Guide groove; 5. Nozzle body; 51. Fixing groove; 52. First water inlet channel; 53. Second water inlet channel; 6. Nozzle cover; 7. Spray bar; 8. Fixing base; 9. Switching assembly; 10. Nozzle. Detailed Implementation

[0043] In this invention, the terms "first," "second," etc., are used only to distinguish similar objects, not to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "front," "rear," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, and is only for the convenience of describing the invention, not to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, it should not be construed as a limitation on the scope of protection of this invention. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] Furthermore, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Please see Figures 1-15 As shown, a nozzle of the present invention includes a nozzle body, which has a water outlet channel 21, a water outlet 11, and at least two water inlets. The water inlets can be a single opening or composed of multiple inlet holes. A movable member 4 is provided within the water outlet channel 21, which can switch between at least two working positions. When water flows through any of the water inlets, the movable member 4 moves to the working position corresponding to that water inlet under the drive of the water flow, thereby forming a water flow path connecting the water inlet and the water outlet 11 within the water outlet channel 21, thus forming a water outlet pattern corresponding to that water inlet. When the movable member 4 switches between different working positions, its outer surface moves relative to the inner wall of the water outlet channel 21 to peel off scale adhering to the inner wall of the water outlet channel 21, thereby achieving self-cleaning of the water outlet channel 21 while completing the water outlet pattern switching.

[0046] In this embodiment, the movable component 4 moves axially along the outlet channel 21 within the outlet channel 21 through the combined action of water flow and gravity, thereby switching its working position. When only the first inlet 22 is filled with water, the movable component 4 is driven by the water flow to move axially along the outlet channel 21 to the first working position. When the first inlet 22 is cut off, the movable component 4 is reset to the second working position by gravity. No motor or complex drive mechanism is required, but the way the movable component 4 switches its working position is not limited to this. In other embodiments, the movable component can also be controlled and driven by a motor or other drive mechanism, and its movement can be rotation, rolling, or non-axial displacement.

[0047] Specifically, at least two working positions are included, namely a first working position and a second working position, and at least two water inlets are included, namely a first water inlet 22 and a second water inlet 26, both of which are single openings. The first water inlet 22 and the outlet 11 are located at opposite ends of the axial direction of the outlet channel 21, and the second water inlet 26 is located on the side of the outlet channel 21. When the movable member 5 is in the first working position, the movable member 4 blocks the second water inlet 26 to prevent water from flowing out of the outlet channel 21 when water enters through the first water inlet 22. A check valve is provided in the first water inlet 22. When only the second water inlet 26 is inlet, the check valve 32 closes to prevent water from flowing out of the outlet channel 21 when water enters through the second water inlet 26.

[0048] The water outlet channel 21 includes a first channel cavity 211 and a second channel cavity 212 connected along its axis. The first channel cavity 211 is located at the end near the water outlet 11, and the second channel cavity 212 is located at the end away from the water outlet 11. The first water inlet 22 is connected to the second channel cavity 212, and the axis of the first water inlet 22 is parallel to the axis of the movable member. The second water inlet 26 is connected to the first channel cavity 211. The axial length of the movable member 4 is less than half of the axial length of the water outlet channel 21. The axial lengths of the first channel cavity 211 and the second channel cavity 212 are each half of the axial length of the water outlet channel 21. The first channel cavity 211 is the first working position of the movable member 4, and the second channel cavity 212 is the second working position of the movable member 4. It should be noted that the axial lengths of the aforementioned movable part 4, the first flow channel cavity 211, and the second flow channel cavity 212 are only preferred configurations. In actual design, they can be adjusted adaptively, as long as the logic of "movable part 4 in the first working position can block the second water inlet 26, and movable part 4 in the second working position does not block the second water inlet 26" is satisfied.

[0049] When the nozzle is installed and used, the outlet 11 is positioned above or diagonally above the first inlet 22. When only the first inlet 22 is filled with water, the movable member 4 is driven by the water flow to move along the outlet channel 21 to the first working position (i.e., moving upward or diagonally upward to the first channel cavity 211). A first water flow path is formed in the outlet channel 21, connecting the first inlet 22 and the outlet 11 and flowing through the movable member 4. When the first inlet 22 is cut off, the movable member 4 is reset to the second working position by gravity (i.e., moving downward or diagonally downward to the second channel cavity 212). When the movable member 4 is in the second working position and only the second inlet 26 is filled with water, a second water flow path is formed in the outlet channel 21, connecting the second inlet 26 and the outlet 11. In other embodiments, a reset member, such as a spring, can be provided between the movable member and the outlet channel to drive the movable member to reset by the spring force.

[0050] like Figure 3 , Figure 12 , Figure 13 As shown, the first water flow path includes multiple rotating channels 41 spaced apart along the circumference of the movable member 4, with the multiple rotating channels 41 arranged in the same direction of rotation. Each rotating channel 41 can be an oblique channel with an angle to the radial direction of the movable member 4, or an arc-shaped channel spirally arranged around the axial direction of the movable member 4. In this embodiment, a composite structure of oblique and arc-shaped channels is preferred, that is, the inlet section of the channel is an oblique channel with a certain angle to the radial direction of the movable member 4 to achieve initial deflection of the water flow, and the outlet section transitions into an arc-shaped channel extending spirally along the axial direction to enhance the rotational kinetic energy of the water flow. The first water flow path also includes a receiving trough 42 located axially near the first inlet 22 of the movable component 4, and multiple water distribution channels 43 spaced circumferentially thereon. The multiple water distribution channels 43 are located around the receiving trough 42 and communicate with it. The receiving trough 42 has a frustum-shaped groove structure with its inner diameter gradually narrowing from the outside to the inside, used to concentrate the water flow from the first inlet 22 and form a high-pressure impact, enhancing the lifting force of the water flow on the movable component 4. At the end of the movable component 4 axially away from the first inlet 22, multiple rotating channels 41 and a converging trough 44 located between the rotating channels 41 are provided. The converging trough 44 connects each rotating channel 41. Each rotating channel 41 corresponds to one of the multiple water distribution channels 43, and the corresponding rotating channel 41 and water distribution channel 43 are connected by a connecting channel 46 located on the outer side of the movable component 4. Specifically, there are three rotating channels 41, three converging troughs 44, and three water distribution channels 43.

[0051] When the movable part 4 is in the first working position (i.e., moved to the first flow channel cavity 211 of the water outlet channel 21), the water flows through the receiving trough 42, the water distribution channel 43, and the connecting channel 46, then flows and converges along the rotating channel 41 to the converging trough 44, and is sprayed out from the outlet 11 as the first water splash. When the movable part 4 is in the second working position (i.e., moved to the second flow channel cavity 212 of the water outlet channel 21), the water flows directly from the water outlet channel 21 to the outlet 11, unaffected by the rotating channel 41 of the movable part 4, causing the outlet 1 to spray out as the second water splash. The first water splash, through the rotating channel 41, forms a rotating diffusion pattern, covering a wide area and suitable for wide-area cleaning. The second water splash is a concentrated column with strong impact, suitable for localized strong scouring.

[0052] like Figure 3 As shown, the nozzle body has a transition cavity 12 between the water outlet channel 21 and the water outlet 11. The water outlet channel 21 has a central hole 24 connecting the transition cavity 12 and multiple diversion holes 23 distributed around the central hole 24. The central hole 24 is arranged opposite to the water outlet 11. The central hole 24 can collect the rotating water flow formed by the movable member 4, forming a water film that diffuses out of the water outlet 11. The diameter of the central hole 24 is smaller than the diameter of the water outlet 11 to prevent some of the rotating and diffused water flow from being blocked by the water outlet 11. The multiple diversion holes 23 are staggered with the multiple rotating channels 41. When the movable member 4 is in the first working position, the movable member 4 blocks each diversion hole 23, ensuring that the rotating water flow only flows through the rotating channels 41 to the confluence trough 44 and from the central hole 24 to the water outlet 11, so as to avoid affecting the formation of the rotating and diffused water. When the movable part 4 leaves the first working position and is in the second working position, the diversion hole 23 opens, and the water flows from the second inlet 26 into the outlet channel 21. After being evenly dispersed by the diversion hole 23 and the central hole 24, it flows into the transition cavity 12 and is then sprayed out from the outlet 11, thereby forming a stable and concentrated columnar water flow, avoiding the problem of water flow eccentricity and uneven spray caused by the side water intake of the second inlet 26.

[0053] Preferred, such as Figure 3 As shown, the end of the movable part 4 furthest from the first inlet 22 is provided with a guide slope 45 that slopes towards the side of the outlet channel 21. That is, the guide slope 45 gradually slopes towards the inner wall of the outlet channel 21 from the end of the movable part 4 furthest from the first inlet 22 towards the end closer to the first inlet 22. When the movable part 4 becomes stuck due to scale buildup or other reasons, and gravity is insufficient to reset it to the second working position, the water flow impact force generated by the lateral water intake of the second inlet 26 will act on the guide slope 45, causing the movable part 4 to reset to the second working position.

[0054] A guide structure is fitted between the movable component 4 and the water outlet channel 21 to restrict the circumferential rotation of the movable component 4 and guide its movement along the water outlet channel 21, ensuring stable contact between the movable component 4 and the inner wall of the water outlet channel 21 during movement and ensuring descaling effect. The guide structure includes at least one set of guide grooves 47 and guide ribs 25. The guide grooves 47 are located on one of the outer peripheral surface of the movable component 4 and the inner wall of the water outlet channel 21, and the guide ribs 25 are located on the other. Specifically, the guide structure includes three sets of guide grooves 47 and guide ribs 25. The three guide grooves 47 are located on the outer peripheral surface of the movable component 4 and are spaced apart circumferentially. The three guide ribs 25 are located on the inner wall of the water outlet channel 21 and are spaced apart circumferentially. The guide grooves 47 and guide ribs 25 extend axially along the movable component 4, and each set of guide ribs 25 slides in conjunction with the guide grooves 47. Preferably, the thickness of the guide ribs 25 is less than the depth of the guide grooves 47, so that when the two slide in conjunction, the aforementioned connecting channel 46 can be formed between them.

[0055] The guide groove 47 is staggered with the second water inlet 26 to ensure that when the movable part 4 is in the first working position, the movable part 4 can block the second water inlet 26.

[0056] Specifically, such as Figure 1 As shown, the nozzle body includes a water outlet 1, a nozzle body 2, and a flow guide 3. The nozzle body 2 has a water outlet channel 21. The first axial end of the water outlet channel has a central hole 24 and multiple branch holes 23, and the second end has a first water inlet 22. A second water inlet 26 is provided on the radial sidewall. The water outlet 1 has an outlet 11, which is connected to the first axial end of the nozzle body 2 and forms a transition cavity 12. The flow guide 3 is sealed to the first water inlet 22 and has a flow acceleration hole 31 communicating with the water outlet channel 21. The diameter of the flow acceleration hole 31 is less than one-third of the diameter of the first water inlet 22, in order to accelerate the water flow, increase water pressure, and increase the lifting force on the movable part 4. Specifically, the check valve includes two spring plates 32 disposed opposite to each other on the inner wall of the flow acceleration hole 31. The two spring plates 31 are inclined toward the water outlet channel 32. When water flows into the flow acceleration hole 31 from the outside, the water pressure pushes the two spring plates 32 to open to both sides to allow the water to pass smoothly. When the water in the water outlet channel 21 flows back into the flow acceleration hole 31, the reverse water flow acts on the spring plates 32, forcing the two spring plates 32 to close toward the center, thereby effectively blocking the backflow.

[0057] The working principle of the nozzle of the present invention is as follows:

[0058] Rotating diffusion water mode: When water flows through the first inlet 22, the water flow is accelerated through the guide acceleration hole 31 and enters the outlet channel 21. The accumulated water flow exerts force on the water receiving trough 42 of the movable part 4, pushing the movable part 4 to the first working position (i.e., the first flow channel cavity 211 of the outlet channel 21). Figure 5 , Figure 7 As shown, at this time, the water flows through the water distribution channel 43 and enters the rotating channel 41 through the connecting channel 46. Under the guidance of the rotating channel 41, the rotating fluid is formed and flows into the confluence settling tank 44. Then, it is collected through the central hole 24 to form a water film, and finally the rotating diffused water is sprayed out from the outlet 11.

[0059] Columnar water flow mode: When the first inlet 22 is cut off, the movable part 4 begins to move downward under its own gravity. If the gravity is sufficient to overcome the frictional resistance, the movable part 4 will naturally return to the second working position (i.e., the second flow channel cavity 212 of the water outlet 21). If the return is obstructed due to scale buildup, after the second inlet 26 is filled with water, the water flow impacts the guide slope 45 and pushes it downward. At this time, the diversion hole 23 opens, and the water flow is evenly dispersed through multiple diversion holes 23 before entering the transition cavity 12. Finally, a highly concentrated and strongly impacting columnar water flow is ejected from the outlet 11.

[0060] Self-descaling mechanism: When the movable part 4 switches between the first and second working positions, its outer surface moves relative to the inner wall of the water outlet channel 21. Utilizing the scraping, friction, and squeezing action between its surface and the inner wall of the water outlet channel 21, scale adhering to the inner wall of the water outlet channel 21 is effectively removed. Furthermore, water enters alternately through the first inlet 22 and the second inlet 26, allowing the scale to be carried away by the water flow from the outlet 11. Therefore, in daily use, each time the user switches the water outlet mode, an automatic descaling process is completed.

[0061] Please see Figures 1-17 As shown, a cleaning nozzle of the present invention includes a nozzle body 5 and a nozzle 10. The nozzle body 5 is provided with a fixing groove 51 and at least two water inlet channels. Specifically, the at least two water inlet channels include a first water inlet channel 52 and a second water inlet channel 53. The nozzle 10 is installed in the fixing groove 51, and the first water inlet channel 52 and the second water inlet channel 53 are respectively connected to a first water inlet 22 and a second water inlet 26. The present invention also includes a nozzle cover 6, which is installed on the top of the nozzle body 5 to press and fix the nozzle 10.

[0062] For details on the nozzle's structure and working principle, please refer to the previous description; they will not be repeated here.

[0063] Please see Figure 18As shown, a spray bar device of the present invention includes a spray bar 7 and a fixed base 8. The spray bar 7 is slidably disposed on the fixed base 8. It also includes a cleaning nozzle of the present invention, disposed at the extended end of the spray bar 7. The spray bar 7 has at least two water supply channels, specifically including a first water supply channel and a second water supply channel, which are connected to a first inlet channel 52 and a second inlet channel 53. The present invention also includes a switching component 9 for controlling the on / off state of each water supply channel. The switching component 9 is preferably disposed on the fixed base 8, but can also be disposed on the spray bar 7; the specific arrangement can be flexibly adjusted according to actual application requirements. The switching component 9 can be implemented using a switching valve or similar structure.

[0064] The nozzle, cleaning nozzle and spray bar device of the present invention, the parts not described herein are the same as or can be implemented using the prior art.

[0065] The above embodiments are only used to further illustrate a nozzle, cleaning nozzle and spray bar device of the present invention. However, the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A nozzle, comprising a nozzle body, the nozzle body having a water outlet channel, a water outlet, and at least two water inlets; characterized in that: The water outlet channel is equipped with a movable component that can switch between at least two working positions. When water flows through any inlet, the movable component can move to the working position corresponding to that inlet, so that a water flow path connecting the inlet and the outlet is formed in the water outlet channel, thereby forming a water outlet pattern corresponding to that inlet. When the movable component switches between different working positions, its outer surface moves relative to the inner wall of the water outlet channel to peel off the scale adhering to the inner wall of the water outlet channel.

2. The nozzle according to claim 1, characterized in that: The at least two working positions include a first working position and a second working position, and the at least two water inlets include a first water inlet and a second water inlet; when only the first water inlet is in operation, the movable component is driven by the water flow to move along the water outlet channel to the first working position, and a first water flow path is formed in the water outlet channel connecting the first water inlet and the water outlet and flowing through the movable component; when the first water inlet is cut off, the movable component is reset to the second working position by gravity and / or the action of the reset component; when the movable component is in the second working position and only the second water inlet is in operation, a second water flow path is formed in the water outlet channel connecting the second water inlet and the water outlet.

3. The nozzle according to claim 2, characterized in that: The second water inlet is located on the side of the water outlet channel. When the movable part is in the first working position, the movable part blocks the second water inlet. A check valve is provided in the first water inlet. When only the second water inlet is inlet, the check valve is closed to prevent the water in the water outlet channel from flowing out of the first water inlet.

4. The nozzle according to claim 2, characterized in that: The first water flow path includes a plurality of rotating channels spaced apart along the circumference of the movable component, the plurality of rotating channels being arranged in the same direction of rotation; when the movable component is in the first working position, the water flows in a rotating manner along the rotating channels and sprays out a first water splash from the outlet; when the movable component is in the second working position, a second water splash is sprayed out from the outlet.

5. The nozzle according to claim 4, characterized in that: The first water flow path further includes a water receiving trough disposed at one end of the movable member axially close to the first water inlet, and a plurality of water distribution channels spaced apart along its circumference. The plurality of water distribution channels are located around the water receiving trough and are connected to the water receiving trough. The movable member is provided with a plurality of rotating channels and a converging trough located between the rotating channels at one end axially away from the first water inlet. The converging trough is connected to each of the rotating channels. The plurality of rotating channels correspond one-to-one with the plurality of water distribution channels, and the corresponding rotating channels and water distribution channels are connected by a connecting channel disposed on the outer side of the movable member.

6. The nozzle according to claim 4 or 5, characterized in that: The nozzle body has a transition cavity between the water outlet channel and the water outlet. The water outlet channel has a central hole connecting the transition cavity and multiple diversion holes distributed around the central hole. The central hole is arranged opposite to the water outlet. When the movable part is in the first working position, the movable part blocks each diversion hole. When the movable part leaves the first working position, the movable part opens each diversion hole.

7. The nozzle according to claim 2, characterized in that: A guide structure is provided between the movable component and the water outlet channel to restrict the circumferential rotation of the movable component and guide its movement along the water outlet channel. The guide structure includes at least one set of guide grooves and guide ribs. The guide groove is located on one of the outer peripheral surface of the movable component and the inner wall of the water outlet channel, and the guide rib is located on the other. The guide groove and the guide rib extend along the axial direction of the movable component, and each set of guide ribs slides in cooperation with the guide groove.

8. The nozzle according to claim 6, characterized in that: The nozzle body includes a water outlet and a nozzle body. The nozzle body has a water outlet channel. The first end of the water outlet channel in the axial direction has a central hole and a plurality of the diversion holes. The second end has a first water inlet, and the radial sidewall has a second water inlet. The water outlet has the water outlet and is connected to the first end of the nozzle body in the axial direction to form the transition cavity.

9. The nozzle according to claim 2, characterized in that: It also includes a flow guide, which is sealed to the first water inlet and has a flow acceleration hole that communicates with the water outlet channel; the diameter of the flow acceleration hole is smaller than the diameter of the first water inlet.

10. The nozzle according to claim 2, characterized in that: The second water inlet is located on the side of the water outlet channel, and the end of the movable part away from the first water inlet is provided with a guide slope that is inclined toward the side of the water outlet channel.

11. A cleaning nozzle, comprising a nozzle body; characterized in that: It also includes a nozzle as described in any one of claims 1-10; the nozzle body is provided with a fixing groove and at least two water inlet channels, the nozzle is installed in the fixing groove, and the at least two water inlet channels are connected to the at least two water inlets one by one.

12. A spray boom device, comprising a spray boom and a fixed base, wherein the spray boom is slidably disposed on the fixed base, characterized in that: It also includes the cleaning nozzle as described in claim 11, wherein the cleaning nozzle is disposed at the extended end of the spray bar; the spray bar is provided with at least two water supply channels, wherein the at least two water supply channels are connected to the at least two water inlet channels one by one; it also includes a switching component, wherein the switching component is disposed on the spray bar or the fixed base, and is used to control the on / off state of each of the water supply channels.

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