Self-rotating cleaning nozzle

Abstract

The utility model relates to the field of washing nozzles, in particular to a self-rotating cleaning nozzle which comprises a nozzle body and a swing arm spray head, the water outlet end of the nozzle body is rotationally connected with the middle of the swing arm spray head, and a plurality of pairs of inclined nozzle water outlets which are reversely inclined are formed in the lower surface of the swing arm spray head. Each pair of reversely inclined inclined nozzle water outlets are located at the two ends of the lower surface of the swing arm spray head respectively, the water flow path can be changed, different flow speeds and pressure distribution can be generated, self-rotation can be achieved under the water flow pressure, rapid and uniform spraying and cleaning of water flow on the inner wall of the pure water tank can be better achieved, and the cleaning effect is good. And meanwhile, the spraying coverage area is wider, the spraying effect is more uniform, and the spraying device adapts to the application scene that the inner wall of the water tank needs high spraying speed to achieve the good cleaning effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a field of flushing nozzle, concretely relates to a self-rotating cleaning nozzle. BACKGROUND

[0002] With the improvement of modern people's life quality, various kinds of drinking water equipment enter the family, and people's experience requirement of drinking equipment is increasing. And for drinking water equipment, in the long-term use process, the maintenance of internal water quality and equipment cleaning have always been a big challenge, especially for the maintenance of pure water tank in drinking water equipment. Specifically, in actual life, if the water outlet of drinking water equipment flows out hot water, high temperature usually has killed most of the bacteria, thereby ensuring water quality safety, however, the storage water in pure water tank usually uses normal temperature water, therefore, under the condition of long-term static, the inner wall and bottom surface of pure water tank will inevitably have the problem of microorganism breeding and deposition, thereby causing the quality of normal temperature water of outlet water to drop.

[0003] At present, in order to reduce the inconvenience of manual opening and cleaning and reduce the cost of cleaning device, the prior art will fix a flushing nozzle at the water inlet of the pure water tank, and when the water tank needs to be cleaned, the water flows through the flushing nozzle to spray the inner wall and bottom surface of the pure water tank, realizing controllable water tank cleaning operation. In the prior art of self-rotating nozzle, the nozzle body is designed as a U-shaped pipe structure, the two sides of the U-shaped pipe are connected through a communication pipe, the water inlet pipe is connected with the middle part of the communication pipe through a suspension device, and the water flows out through the water spray holes arranged on the two opposite sides of the U-shaped pipe, so as to realize the technical scheme of self-rotating spraying.

[0004] However, like the existing U-shaped pipe nozzle body design, the water flow will first flow into the bottom of the U-shaped pipe from the horizontal communication pipe, and then flow out from the water spray holes on the two side walls of the U-shaped pipe when the water in the U-shaped pipe accumulates to the height of the water spray holes. This structure not only limits the direction and path of the water flow, thereby affecting the coverage and uniformity of the spraying, but also due to the structural limitation of the U-shaped pipe, the water flow is difficult to generate sufficient speed change at the water spray hole, resulting in unsatisfactory spraying effect, especially difficult to be applied to the cleaning of the inner wall of the water tank which requires high spraying speed to achieve good cleaning effect. CONTENT OF THE UTILITY MODEL

[0005] In view of the above technical problems, the utility model provides a self-rotating cleaning nozzle, which aims to realize effective spraying and cleaning of the inner wall of the pure water tank, so that the spraying coverage is wider and the spraying effect is more uniform, so as to adapt to the application scene of the cleaning of the inner wall of the pure water tank which requires high spraying speed to achieve good cleaning effect.

[0006] To this end, the utility model discloses the following technical scheme: A self-rotating cleaning nozzle, including nozzle main part and swing arm shower head, the water outlet of nozzle main part is connected with the middle part of swing arm shower head, the lower surface of swing arm shower head is provided with several pairs of reverse oblique slant nozzle water outlet, and each pair of reverse oblique slant nozzle water outlet is located at both ends of the lower surface of swing arm shower head.

[0007] As preferred, the inclination direction of each pair of reverse oblique slant nozzle water outlet is opposite and the inclination angle is same.

[0008] As preferred, each pair of reverse oblique slant nozzle water outlet is symmetrically distributed on the lower surface of swing arm shower head along the central axis of swing arm shower head.

[0009] As preferred, at least one pair of reverse oblique slant nozzle water outlet is arranged towards the direction perpendicular to the transverse center line of swing arm shower head.

[0010] As preferred, the cleaning nozzle comprises an outer sleeve tube, the outer sleeve tube is fixedly connected with the nozzle main part, the water outlet of outer sleeve tube is provided with a downward protruding water collecting port, the middle part of the upper surface of swing arm shower head is provided with a convex groove, the convex groove of swing arm shower head is located in the water collecting port of outer sleeve tube, the convex groove and water collecting port are gap matched, and the water outlet of outer sleeve tube is rotatably connected with the middle part of swing arm shower head.

[0011] As preferred, the cleaning nozzle comprises a rotating connecting piece, the rotating connecting piece is located in the convex groove, the water inlet of rotating connecting piece is transitionally matched with the water inlet of water collecting port, and the water outlet of rotating connecting piece is connected with the water outlet of convex groove.

[0012] As preferred, the water outlet of rotating connecting piece is clamped with the water outlet of convex groove.

[0013] As preferred, the swing arm shower head comprises a swing arm shower head upper shell and a swing arm shower head lower shell, the middle part of swing arm shower head upper shell is rotatably connected with the water outlet of nozzle main part, the lower surface of swing arm shower head lower shell is provided with several pairs of reverse oblique slant nozzle water outlet, and swing arm shower head upper shell and swing arm shower head lower shell are fixedly connected.

[0014] As preferred, the outer surface of nozzle main part is provided with an outward protruding abutting ring, and the abutting ring is abutted with the water inlet of outer sleeve tube.

[0015] As preferred, the water inlet of nozzle main part is provided with a pipeline quick plug.

[0016] The utility model has at least the following beneficial technical effects:

[0017] 1. A self-rotating cleaning nozzle is adopted. Compared with the U-shaped nozzle design in the prior art, the present application adopts a swing arm nozzle design. Combined with the reverse tilting design of the inclined nozzles at both ends of the lower surface of the swing arm nozzle, it can change the water flow path and generate different flow rates and pressure distributions. It can not only achieve self-rotation under water pressure, but also better realize the rapid and uniform spray cleaning of the inner wall of the pure water tank. At the same time, it makes the spray coverage area wider and the spraying effect more uniform, so as to adapt to the application scenario of cleaning the inner wall of the water tank, which requires a high spraying speed to achieve a good cleaning effect.

[0018] 2. By setting at least a pair of counter-inverted angled nozzles facing the direction perpendicular to the horizontal centerline of the swing arm nozzle, combined with the design of the opposite inclination direction of the pair of angled nozzles, the water flow directly generates opposite horizontal forces when passing through the pair of angled nozzles facing the direction perpendicular to the horizontal centerline of the swing arm nozzle, thereby further enhancing the rotational power of the swing arm nozzle and making it easier for the swing arm nozzle to achieve self-rotation under the action of water flow pressure.

[0019] 3. The design of the water collection port at the outlet of the outer sleeve can concentrate the water flow to the center of the swing arm nozzle, reducing water scattering and ensuring that the water flows into the interior of the swing arm nozzle in a concentrated manner from the groove. This allows the water flow to be better guided and concentrated before spraying, thereby enhancing the spray force to a certain extent. It also reduces the area of ​​direct impact of the water flow on the swing arm nozzle, reducing wear and increasing the durability of the swing arm nozzle. At the same time, the gap fit design between the water collection port and the groove of the swing arm nozzle avoids direct contact between the two, thereby reducing friction between the water collection port and the groove of the swing arm nozzle. This ensures that the swing arm nozzle can rotate freely without being constrained by the outer sleeve, thus maintaining the self-rotation effect of the swing arm nozzle.

[0020] 4. By using a transition fit design between the inlet end of the rotating connector and the inlet end of the water collection port, there is a certain amount of play between the mating surfaces of the rotating connector and the water collection port. This allows the rotating connector to rotate or move slightly relative to the outer sleeve, ensuring relative stability between the swing arm nozzle and the outer sleeve during the self-rotation of the swing arm nozzle. It also allows the nozzle to adapt to the mechanical vibrations generated by the self-rotation of the swing arm nozzle. At the same time, it is understandable that since the water flow needs to pass through the inside of the nozzle and then be sprayed out through the angled nozzle outlet, there will inevitably be frictional losses between the fluid and the inside of the swing arm nozzle, as well as potential blockage of the nozzle outlet caused by the deposition of microbial impurities in the water flow. Therefore, this application utilizes the characteristics of the transition fit, which is between a fixed connection and a movable connection, to better adapt to situations where the swing arm nozzle needs to be replaced and maintained.

[0021] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0022] The utility model makes further illustration in connection with the drawings as follows:

[0023] Figure 1 It is whole structure schematic diagram of self-rotating cleaning nozzle of the utility model embodiment.

[0024] Figure 2 It is structure bottom view of self-rotating cleaning nozzle of the utility model embodiment.

[0025] Figure 3 It is structure explosion view of self-rotating cleaning nozzle of the utility model embodiment.

[0026] Figure 4 It is structure section view of self-rotating cleaning nozzle of the utility model embodiment.

[0027] Wherein: 1, nozzle main body, 11, abutment ring, 12, pipeline quick connector, 2, swing arm nozzle, 21, inclined nozzle water outlet, 22, convex groove, 3, outer sleeve, 31, water collecting port, 4, rotary connecting piece. DETAILED DESCRIPTION

[0028] The technical scheme of the utility model embodiment is explained and described below in connection with the drawings of the utility model embodiment, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0029] In the following description, the appearance of terms such as "inner", "outer", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship only for the convenience of describing the embodiments and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0030] Please refer to the drawings of the utility model Figure 1 , Figure 1 The utility model discloses a kind of whole structure schematic diagram of self-rotating cleaning nozzle provided in one embodiment of the present specification.

[0031] As Figure 1 Indicated, the self-rotating cleaning nozzle can at least include nozzle main body 1 and swing arm nozzle 2, the water outlet end of nozzle main body 1 is connected with the middle part of swing arm nozzle 2, and the lower surface of swing arm nozzle 2 is provided with several pairs of reverse inclined inclined nozzle water outlet 21, and each pair of reverse inclined inclined nozzle water outlet 21 is located at both ends of the lower surface of swing arm nozzle 2.

[0032] It can be understood that a pair of reverse inclined inclined nozzle water outlet 21 includes two inclined nozzle water outlets 21.

[0033] In the embodiment, the inclination angle of the inclined nozzle water outlet 21 can be adjusted according to different cleaning requirements to adapt to different cleaning areas and pollution levels of the inner wall of the pure water tank, which is not limited in the embodiment. For example, if more intensive cleaning of the inner wall of the pure water tank is required, the inclination angle of the inclined nozzle water outlet 21 can be set larger, so that the water flow can impact the inner wall of the pure water tank with stronger force when sprayed, thereby more effectively removing dirt and bacteria and improving the cleaning effect; if the area to be cleaned is the corner or edge of the pure water tank, the inclination angle of the inclined nozzle water outlet 21 can be adjusted to a certain angle with the inner wall of the pure water tank, so that the water flow can be directly sprayed to the corners or edges that are difficult to reach, thereby increasing the vertical up and down space coverage of the water flow to the inner wall of the pure water tank, thereby increasing the overall spraying coverage of the water flow to the inner wall area of the pure water tank to be cleaned.

[0034] It can be understood that in the embodiment, when the water flow flows into the nozzle body 1, the water flow will flow from the water outlet end of the nozzle body 1 into the interior of the swing arm nozzle head 2, and then be sprayed out through the inclined nozzle water outlet 21 on the lower surface of the swing arm nozzle head 2. Since the several pairs of inclined nozzle water outlets 21 on the lower surface of the swing arm nozzle head 2 are oppositely inclined and each pair of oppositely inclined inclined nozzle water outlets 21 is located at the two ends of the lower surface of the swing arm nozzle head 2, under the influence of the angle and shape structure of the inclined nozzle water outlet 21, the water flow path will change when the water flow passes through the inclined nozzle water outlet 21, thereby producing different flow rates. According to Bernoulli's principle, the pressure on the side with fast flow rate will decrease, while the pressure on the side with slow flow rate will be relatively high. This pressure difference causes the swing arm nozzle head 2 to receive a transverse force, i.e., a Magnus force. Due to the Magnus force, combined with the oppositely inclined design of each pair of inclined nozzle water outlets 21 at the two ends of the lower surface of the swing arm nozzle head 2, a transverse force is generated when the water flow passes through the inclined nozzle, which forms a balanced torque at the two ends of the swing arm nozzle head 2, so that the swing arm nozzle head 2 receives a torque that makes it rotate around its own axis. This torque makes the swing arm nozzle head 2 self-rotate under the pressure of the water flow. With the self-rotation of the swing arm nozzle head 2, the water flow is quickly and uniformly sprayed through the inclined nozzle water outlet 21 on the inner wall of the pure water tank, thereby achieving the purpose of full-spray cleaning of the pure water tank.

[0035] Currently, the existing self-rotating nozzle technology designs the nozzle body as a U-shaped pipe, the two sides of the U-shaped pipe are connected through a connecting pipe, the water inlet pipe is rotatably connected to the middle part of the connecting pipe through a hanging device, and the water flow flows through the water spraying holes arranged on the opposite sides of the two side walls of the U-shaped pipe to realize self-rotating spraying. However, like the U-shaped pipe design of the existing nozzle body, the water flow will first flow into the bottom of the U-shaped pipe from the horizontal connecting pipe, and then flow out from the water spraying holes on the two side walls of the U-shaped pipe when the water in the U-shaped pipe accumulates to the height of the water spraying holes. This structure not only limits the direction and path of the water flow, making the water flow unable to be sprayed at different angles and directions, thereby affecting the coverage and uniformity of the spraying, but also due to the structural limitation of the U-shaped pipe, it is difficult for the water flow to generate sufficient speed change at the water spraying holes, resulting in unsatisfactory spraying effect, especially difficult to be applied to the water tank inner wall cleaning which requires higher spraying speed to achieve good cleaning effect. The design of the swing arm nozzle 2 in the embodiment, combined with the reverse inclined design of the inclined nozzle water outlets 21 at both ends of the lower surface of the swing arm nozzle 2, can change the water flow path, generate different flow rates and pressure distributions, not only can realize self-rotation under the water flow pressure, but also can better realize the rapid and uniform spraying and cleaning of the water flow to the inner wall of the pure water tank, at the same time, the spraying coverage area is wider and the spraying effect is more uniform, so as to adapt to the application scene of the water tank inner wall cleaning which requires higher spraying speed to achieve good cleaning effect.

[0036] In one embodiment of the present specification, please refer to the accompanying Figure 2 The inclined directions of each pair of reverse inclined inclined nozzle water outlets 21 are opposite and the inclined angles are the same.

[0037] It can be understood that, through the design that the inclined angles of each pair of reverse inclined inclined nozzle water outlets 21 are the same, it is helpful to generate the same flow rate and pressure distribution of the water flow at different areas of the lower surface of the swing arm nozzle 2, so that the sprayed water flow is uniformly distributed on the same height area of the inner wall of the pure water tank, realizing uniform cleaning of the inner wall of the pure water tank, and improving the stability of the swing arm nozzle 2 during operation.

[0038] Further, in the embodiment, each pair of reverse inclined inclined nozzle water outlets 21 is symmetrically distributed on the lower surface of the swing arm nozzle 2 along the central axis of the swing arm nozzle 2.

[0039] Through the design of the central axis symmetry distribution of each pair of oppositely inclined slanted nozzle outlets 21, the uniform water flow distribution of the lower surface of the swing arm nozzle 2 can be further ensured when the swing arm nozzle 2 rotates under the water flow pressure, so that the spray coverage is more uniform, which also helps the swing arm nozzle 2 to keep balance when it rotates, reduces vibration, thereby improving the stability of the swing arm nozzle 2 when it operates, reducing the deviation of the swing arm nozzle 2 during the spraying process, and ensuring that the water flow is sprayed according to the guide direction of the slanted nozzle outlet 21. At the same time, the symmetrical design of each pair of slanted nozzle outlets 21 along the central axis of the swing arm nozzle 2 can better adapt to different flow conditions, because under such a design, the two slanted nozzle outlets 21 in a pair can evenly share the water flow, and the spraying effect will not change significantly due to changes in flow.

[0040] Further, in the embodiment, at least one pair of oppositely inclined slanted nozzle outlets 21 are arranged towards a direction perpendicular to the transverse center line of the swing arm nozzle 2.

[0041] In the embodiment, the number of pairs of slanted nozzle outlets 21 arranged towards a direction perpendicular to the transverse center line of the swing arm nozzle 2 is one or more, which is not limited in the embodiment.

[0042] It can be understood that the transverse center line of the swing arm nozzle 2 in the embodiment is the center line between the two longer sides of the swing arm nozzle 2, so the direction perpendicular to the transverse center line of the swing arm nozzle 2 is the direction of the transverse force (i.e. the Magnus force) received by the swing arm nozzle 2 under the water flow pressure. At the same time, in combination with the design that the inclination directions of a pair of slanted nozzle outlets 21 are opposite, so that when the water flow passes through the pair of slanted nozzle outlets 21 arranged towards a direction perpendicular to the transverse center line of the swing arm nozzle 2, a transverse force in the opposite direction is directly generated, thereby further enhancing the rotation power of the swing arm nozzle 2, so that the swing arm nozzle 2 is more easily rotated under the action of the water flow pressure.

[0043] In one embodiment of the present specification, please refer to the accompanying Figure 3 and the accompanying Figure 4 The cleaning nozzle comprises an outer sleeve 3 fixedly connected with the nozzle body 1, the water outlet end of the outer sleeve 3 is provided with a downward protruding water collecting port 31, the middle part of the upper surface of the swing arm nozzle 2 is provided with a convex groove 22, the convex groove 22 of the swing arm nozzle 2 is located in the water collecting port 31 of the outer sleeve 3, the convex groove 22 and the water collecting port 31 are gap fitted, and the water outlet end of the outer sleeve 3 is rotationally connected with the middle part of the swing arm nozzle 2.

[0044] The gap fit refers to a fit mode in which a certain gap exists between two fit components. In the gap fit mode, the fit components can move relative to each other without being damaged due to excessive pressure, but such movement is within a certain range. In the embodiment, the size of the gap between the water collecting opening 31 and the convex groove 22 of the swing arm nozzle 2 can be determined according to the actual situation of the cleaning nozzle, as long as the self-rotation movement of the swing arm nozzle 2 is not hindered, and the wear or damage between the fit components is avoided. The embodiment does not limit this.

[0045] It can be understood that the setting of the outer sleeve 3 in the embodiment provides an additional support structure for the nozzle body 1. The water outlet end of the outer sleeve 3 is rotationally connected to the middle part of the swing arm nozzle 2, which helps to increase the stability of the entire self-rotating cleaning nozzle and reduce looseness caused by vibration or water flow impact. Through the design of the water collecting opening 31 at the water outlet end of the outer sleeve 3, the water flow can be concentrated to the center of the swing arm nozzle 2, reducing the scattering of the water flow and ensuring that the water flow flows into the swing arm nozzle 2 from the convex groove 22 in a concentrated manner. The water flow is better guided and concentrated before being sprayed, thereby increasing the spraying intensity to some extent, reducing the area directly impacted by the water flow on the swing arm nozzle 2, reducing the wear of the swing arm nozzle 2, increasing the durability of the swing arm nozzle 2, and avoiding direct contact between the water collecting opening 31 and the convex groove 22 of the swing arm nozzle 2. Thus, the friction between the water collecting opening 31 and the convex groove 22 of the swing arm nozzle 2 is reduced, the swing arm nozzle 2 can rotate freely without being restricted by the outer sleeve 3, and the self-rotation effect of the swing arm nozzle 2 is maintained.

[0046] Further, in the embodiment, the cleaning nozzle comprises a rotating connecting piece 4. The rotating connecting piece 4 is located in the convex groove 22. The water inlet end of the rotating connecting piece 4 is transitionally fitted with the water inlet end of the water collecting opening 31, and the water outlet end of the rotating connecting piece 4 is connected with the water outlet end of the convex groove 22.

[0047] The transition fit refers to a connection mode between interference fit and gap fit. It is neither a fixed connection generated by interference fit nor a relative movement generated by gap fit, but has characteristics between the two. The transition fit mode is suitable for occasions that require a certain activity space but also need to maintain relative stability.

[0048] By the transition fit design of the water inlet end of the rotating connecting piece 4 and the water inlet end of the water collecting port 31, the rotating connecting piece 4 and the fitting surface of the water collecting port 31 have a certain space for movement, allowing the rotating connecting piece 4 to rotate or slightly move relative to the outer sleeve 3, so that the swing arm nozzle 2 and the outer sleeve 3 can remain relatively stable and adapt to the mechanical vibration generated by the self-rotation of the swing arm nozzle 2 during the self-rotation of the swing arm nozzle 2. It can be understood that due to the water flow passing through the nozzle interior and then being sprayed out through the inclined nozzle water outlet 21, there will inevitably be friction loss of the fluid to the interior of the swing arm nozzle 2 and the problem of nozzle water outlet blockage caused by the deposition of microbial impurities in the water flow. Therefore, in this embodiment, the transition fit feature is between fixed connection and movable connection, which can better adapt to the situation where the swing arm nozzle 2 needs to be replaced and maintained.

[0049] Further, in this embodiment, the water outlet end of the rotating connecting piece 4 is clamped with the water outlet end of the convex groove 22.

[0050] For example, in this embodiment, the water outlet end of the rotating connecting piece 4 can be provided with several clamps, and the connection between the rotating connecting piece 4 and the convex groove 22 of the swing arm nozzle 2 is established by the extrusion of the clamps. In use, the rotating connecting piece 4 is inserted into the convex groove 22, and then the clamps are rotated until the convex groove 22 of the swing arm nozzle 2 is clamped tightly with the clamps to ensure firm connection.

[0051] Further, the several clamps can be fixed with each other in a spoke structure (similar to the spoke part of a wheel), thereby providing good support between the clamps and further ensuring the stability of the clamping, avoiding the deformation of the several clamps of the water outlet end of the rotating connecting piece 4 during the water flow through the convex groove 22, and maintaining the smoothness of the water flow channel while realizing the rotating connection of the outer sleeve 3 and the swing arm nozzle 2, thereby reducing the energy loss of the water flow on the rotating connecting piece 4 and maintaining a high water flow pressure for the self-rotation of the swing arm nozzle 2.

[0052] By the clamping design of the water outlet end of the rotating connecting piece 4 and the water outlet end of the convex groove 22, the accidental falling of the swing arm nozzle 2 caused by loose connection can be reduced, thereby improving the safety during the use of the cleaning nozzle, and the clamping design makes the installation and disassembly of the swing arm nozzle 2 more convenient, which is conducive to the replacement and cleaning of the swing arm nozzle 2.

[0053] Further, in this embodiment, the swing arm nozzle 2 includes a swing arm nozzle 2 upper shell and a swing arm nozzle 2 lower shell, the middle part of the swing arm nozzle 2 upper shell is rotatably connected with the water outlet end of the nozzle body 1, the lower surface of the swing arm nozzle 2 lower shell is provided with several pairs of oppositely inclined inclined nozzle water outlets 21, and the swing arm nozzle 2 upper shell is fixedly connected with the swing arm nozzle 2 lower shell.

[0054] It is understood that in this embodiment, the swing arm nozzle 2 is designed as a fixed connection between the upper shell and the lower shell of the swing arm nozzle 2. The connection design of the upper shell and the lower shell allows each part of the swing arm nozzle 2 (such as the connection structure between it and the nozzle body 1, the oblique nozzle outlet 21 structure on the lower surface of the nozzle, etc.) to be designed and optimized independently to meet different application requirements, such as rotational connection stability, water flow control, pressure distribution, etc., and at the same time, it makes it easier to replace and maintain the swing arm nozzle 2.

[0055] Furthermore, in this embodiment, the outer surface of the nozzle body 1 is provided with an outwardly protruding abutment ring 11, which abuts against the water inlet end of the outer sleeve 3.

[0056] The design of the abutment ring 11 can improve the stability of the connection between the nozzle body 1 and the outer sleeve 3, and reduce loosening caused by vibration or water flow impact.

[0057] In one embodiment of this specification, please refer to the appendix. Figure 4 The nozzle body 1 is equipped with a quick-connect pipe fitting 12 at the water inlet end.

[0058] It is understood that the quick-connect pipe fitting 12 in this embodiment enables quick and easy connection and disconnection between the nozzle body 1 and the pure water tank inlet pipe. Optionally, the quick-connect pipe fitting 12 can adopt several structural designs. The most suitable quick-connect pipe fitting 12 design can be selected according to actual application requirements. This embodiment does not limit this design:

[0059] 1. Threaded quick-connect fitting: This type of quick-connect fitting typically includes a threaded pipe fitting that establishes the connection between the nozzle body 1 and the pure water tank inlet pipe by rotating and locking. In use, simply rotate the pipe fitting until you hear a "click," indicating a secure connection.

[0060] 2. Clamp-type quick-connect fitting: This type of quick-connect fitting typically includes a central tube and several clamps at one end of the central tube. The connection between the nozzle body 1 and the pure water tank inlet pipe is established by the compression of the clamps. In use, insert the pure water tank inlet pipe into the central tube, and then rotate the clamps until the pure water tank inlet pipe is tightly secured with the clamps, ensuring a firm connection. Clamp-type quick-connect fitting 12 is attached. Figure 3 and attached Figure 4 As shown in the image.

[0061] 3. O-ring quick-connect fitting: This type of quick-connect fitting typically includes a central tube and an O-ring at one end of the central tube. The O-ring seal establishes the connection between the nozzle body 1 and the pure water tank inlet pipe. In use, insert the pure water tank inlet pipe into the central tube, then rotate the central tube until the O-ring is compressed, ensuring a secure connection.

[0062] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification not deviating from the function and structural principle of the present application will be included in the scope of the claims.

Claims

1. A self-rotating cleaning nozzle characterized by, The self-rotating cleaning nozzle comprises a nozzle body (1) and a swing arm nozzle (2), the water outlet end of the nozzle body (1) is rotationally connected with the middle part of the swing arm nozzle (2), the lower surface of the swing arm nozzle (2) is provided with a plurality of pairs of oppositely inclined inclined nozzle water outlets (21), and each pair of oppositely inclined inclined nozzle water outlets (21) is located at the two ends of the lower surface of the swing arm nozzle (2).

2. The self-rotating cleaning nozzle according to claim 1, wherein The inclined directions of the inclined nozzle water outlets (21) in each pair are opposite and the inclined angles are the same.

3. The self-rotating cleaning nozzle according to claim 2, wherein The inclined nozzle water outlets (21) in each pair are symmetrically distributed on the lower surface of the swing arm nozzle (2) along the central axis of the swing arm nozzle (2).

4. The self-rotating cleaning nozzle according to claim 2, wherein At least one pair of inclined nozzle water outlets (21) is arranged towards a direction perpendicular to the transverse center line of the swing arm nozzle (2).

5. The self-rotating cleaning nozzle according to claim 1, wherein The cleaning nozzle comprises an outer sleeve (3) fixedly connected with the nozzle body (1), the water outlet end of the outer sleeve (3) is provided with a downward protruding water collecting port (31), the middle part of the upper surface of the swing arm nozzle (2) is provided with a convex groove (22), the convex groove (22) of the swing arm nozzle (2) is located in the water collecting port (31) of the outer sleeve (3), the convex groove (22) and the water collecting port (31) are in clearance fit, and the water outlet end of the outer sleeve (3) is rotationally connected with the middle part of the swing arm nozzle (2).

6. The self-rotating cleaning nozzle according to claim 5, wherein The cleaning nozzle comprises a rotating connecting piece (4) located in the convex groove (22), the water inlet end of the rotating connecting piece (4) is transitionally fitted with the water inlet end of the water collecting port (31), and the water outlet end of the rotating connecting piece (4) is connected with the water outlet end of the convex groove (22).

7. The self-rotating cleaning nozzle according to claim 6, wherein The water outlet end of the rotating connecting piece (4) is clamped with the water outlet end of the convex groove (22).

8. The self-rotating cleaning nozzle according to claim 1, wherein The swing arm nozzle (2) comprises an upper swing arm nozzle (2) and a lower swing arm nozzle (2), the middle part of the upper swing arm nozzle (2) is rotationally connected with the water outlet end of the nozzle body (1), the lower surface of the lower swing arm nozzle (2) is provided with a plurality of pairs of oppositely inclined inclined nozzle water outlets (21), and the upper swing arm nozzle (2) and the lower swing arm nozzle (2) are fixedly connected.

9. The self-rotating cleaning nozzle according to claim 1, wherein The outer surface of the nozzle body (1) is provided with an outward protruding abutting ring (11) abutting with the water inlet end of the outer sleeve (3).

10. The self-rotating cleaning nozzle according to claim 1, wherein The water inlet end of the nozzle body (1) is provided with a pipe quick plug (12).

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