CN210019229U - Hydraulic spraying system and dish washing machine comprising same - Google Patents

Abstract

The utility model relates to a hydraulic spraying system, it includes: a hydrodynamic mechanism including a paddle wheel having a plurality of blades distributed circumferentially and at least one nozzle in communication with a source of liquid for projecting a stream of liquid towards the blades to drive the paddle wheel in rotation, a transmission mechanism and a spray mechanism, the transmission mechanism including: a transmission member including an input gear driven to rotate by the paddle wheel through an input shaft and at least one output shaft directly or indirectly connected with the input gear and for outputting a rotational motion of the paddle wheel; a housing carrying the transmission member, the spray mechanism including at least one spray pipe driven by the at least one output shaft for rotational movement, wherein the spray nozzle is proximate an outer circle defined by the plurality of vanes, and the stream of liquid sprayed from the spray nozzle is proximate the outer ends of the vanes and the spray direction is parallel to a tangent of the outer circle. The utility model discloses still relate to a dish washer including this kind of hydraulic spraying system.

Description

Hydraulic spraying system and dish washing machine comprising same

Technical Field

The utility model relates to a hydraulic spraying system and dish washer including this kind of hydraulic spraying system.

Background

The motor is mainly used for providing power for a transmission mechanism for driving the spray pipe of the dish washing machine to rotate in the existing dish washing machine, the motor is used for driving, the high protection level and the high insulation level of the motor must be guaranteed, the service life, the torque and the like of the motor have strict requirements, and the requirements are realized, so that the structure of the product is complex and the cost is high. Meanwhile, along with the lapse of the service life of the product, the protection, insulation and service life capabilities of the motor and the components thereof can be reduced, and great hidden danger can be generated on the safety, so that the hydraulic transmission mechanism is proposed to replace the motor.

However, prior art hydraulic sprinkler systems and dishwashers using hydraulic sprinkler systems suffer from a number of drawbacks. In the prior art, the hydraulic transmission mechanism cannot utilize the hydraulic energy from the hydraulic source with satisfactory efficiency, and the loss of the hydraulic energy cannot be effectively controlled in the process of transmitting the hydraulic energy, so that the hydraulic transmission mechanism has low efficiency, even the transmission mechanism fails, the rotary motion of a spray pipe cannot be driven, and the cleaning capacity and the cleaning efficiency of the dishwasher are seriously influenced. In addition, the prior art hydraulic sprinkler system generally has a large number of components, the connection between the components is complicated and unstable, and the standardized production of the component modules of the hydraulic sprinkler system cannot be realized, which also results in high production cost, difficult assembly, poor interchangeability and replaceability of the components or modules, poor product stability, and short service life. And still have the problem that transmission resistance between the intermediate member is big thereby resulting in hydraulic transmission inefficiency among the prior art, also can't in time discharge the unexpected liquid and the filth that get into inside dish washer and hydraulic spraying system, lead to sanitary environment poor, breed the bacterium easily, influence user's health.

Therefore, there is a need for a highly reliable and efficient hydraulic sprinkler system that overcomes the above-mentioned problems of the prior art.

Disclosure of Invention

According to one aspect of the present utility model, a hydraulic spray system is provided which can prevent the loss of hydraulic energy from a liquid source in an efficient manner and efficiently utilize the hydraulic energy to drive a hydraulic transmission mechanism, thereby improving the efficiency of the hydraulic transmission mechanism.

According to the utility model discloses a hydraulic spraying system of first aspect includes:

a hydrodynamic mechanism comprising:

a paddle wheel comprising a plurality of blades distributed in a circumferential direction,

at least one nozzle in communication with a liquid source for spraying a stream of liquid toward the blades to drive rotation of the paddle wheel,

a transmission mechanism comprising:

a drive member, comprising: an input gear driven for rotation by the paddle wheel through an input shaft; and at least one output shaft connected directly or indirectly with the input gear and for outputting a rotational movement of the paddle wheel,

a housing carrying the transmission member,

a spray mechanism comprising at least one spray pipe driven by the at least one output shaft for rotational movement,

wherein the at least one nozzle is proximate an outer circle defined by the plurality of vanes and a stream of liquid ejected from the at least one nozzle is proximate a radially outer end of the vanes and the direction of the ejection is parallel to a tangent of the outer circle.

In the hydraulic spray system according to the invention, the flow of liquid from the liquid source is sprayed through at least one nozzle onto the blades of the paddle wheel, whereby the hydraulically driven paddle wheel acting on the blades makes a rotational movement, which in turn drives the rotation of the input gear via the input shaft connected rotationally fixedly thereto, which in turn is connected directly or indirectly to the at least one output shaft and drives the rotation thereof, which in turn transmits the rotational movement to the at least one shower connected rotationally fixedly thereto, thereby driving the at least one shower to make a rotational movement, whereby a transmission of a liquid torque from the hydraulically driven paddle wheel to the at least one shower is achieved.

In the hydraulic spraying system according to the invention, positioning the nozzles close to the outer ends of the paddle wheel blades allows a greater moment of the paddle wheel, since it is known from the moment formula M ═ F × L (where M: moment; F: force; L: distance from the axis of rotation to the point of application of force, i.e. in this embodiment the distance between the centre of rotation of the paddle wheel and the point of application of the hydraulic force of the liquid flow on the blades), the greater L, the greater the moment M, in the case where the impact force F of the liquid flow is constant. Meanwhile, setting the ejection direction of the liquid fluid ejected from the nozzle to be parallel to the tangent to the outer circle defined by the plurality of blades can ensure that the impact force of the liquid flow ejected onto the blades does useful work in its entirety, i.e., such impact force has no ineffective component.

Thus, according to the utility model discloses a hydraulic spray system can ensure high-efficient utilization liquid energy through setting for the relative position and the orientation of nozzle and paddle wheel blade, and consequently improve hydraulic spray system's efficiency.

According to a preferred embodiment, the hydrodynamic mechanism comprises a liquid inlet provided on the housing of the transmission mechanism, and the nozzle is also provided on the housing and communicates with the liquid inlet. The arrangement of the liquid inlet and the nozzle in this way can reduce the number of component parts of the hydraulic sprinkler system, and by utilizing the structure of the housing of the transmission mechanism, the liquid inlet and the nozzle can be more easily integrated, and the structure thereof is more compact.

According to a preferred embodiment, the transmission members of the transmission mechanism are comprised in a first transmission line and a second transmission line, the housing comprising respectively: a first housing carrying transmission members in the first drive train, the first drive train including at least the input gear and an intermediate output shaft for transmitting rotary motion outside the first housing; and a second housing carrying a transmission member in the second drive train, the second drive train comprising at least an intermediate input shaft for transmitting rotary motion from the intermediate output shaft into the second housing and comprising the at least one output shaft, wherein the at least one nozzle is provided in the first housing and the liquid inlet is provided in the second housing.

This configuration allows a modular construction of the transmission of the hydraulic sprinkler system, thus making possible a standardized realization of the transmission and thus reducing the production costs; and simultaneously, specific application requirements can be met more conveniently. For example, the second drive train and/or the corresponding second housing, which is primarily used for outputting the rotational movement to the spray mechanism, can be designed to be standardized, i.e. a uniform second drive train and/or second housing can be used for different application requirements; the first transmission system and/or the first housing may be configured and designed differently according to different application requirements, for example, different numbers of gears or gears with different reduction ratios may be provided in the first transmission system to meet certain specific requirements; and vice versa. Obviously, such a modular construction facilitates product design, manufacture, assembly, maintenance and replacement, and facilitates a more compact construction of the transmission mechanism.

And according to a particular embodiment of this preferred embodiment, said first housing is mounted above said second housing in the direction of gravity; according to another particular embodiment of this preferred embodiment, the first housing is mounted below the second housing in the direction of gravity. This makes it possible to achieve a relative position and orientation between the liquid inlet, the nozzle and the paddle wheel blades by adjusting the relative position and orientation between the first housing and the second housing.

According to a preferred embodiment, the nozzle comprises an inlet port and an outlet port, and the outlet port is smaller in size than the inlet port. This configuration is advantageous in increasing the hydraulic pressure at the outlet port, thereby ensuring higher operating efficiency of the hydraulic mechanism.

According to a preferred embodiment, the at least one nozzle is configured to further comprise a nozzle body, and the at least one nozzle is further configured to eject the fluid from the liquid outlet port in an ejection direction that can make an arbitrary angle with an extension direction of the nozzle body. Such a configuration allows more flexibility in the arrangement of the nozzles by making full use of the available space of the hydraulic sprinkler system, and also allows for more convenient integration of the nozzles in the hydraulic sprinkler system.

According to a preferred embodiment, the at least one nozzle is arranged such that the point of intersection of the flow of liquid ejected from the at least one nozzle with the vane is located at a middle portion of the vane in the axial direction. Namely, the intersection point of the liquid flow jetted from the liquid outlet port of the nozzle and the paddle wheel blade is positioned at half of the axial width of the paddle wheel blade. This arrangement maximizes the force-bearing area of the paddle wheel blades and thus minimizes the hydraulic pressure required by the paddle wheel to achieve the same torque.

According to a preferred embodiment, the plurality of blades define an outer circle radius R, and a point where a line passing through the center of the paddle wheel and perpendicular to the ejection direction intersects the ejection direction line is a distance L1 from the liquid outlet port of the nozzle, wherein a value of L1 satisfies 0.775R < L1< 0.825R. This is because the distance between the liquid outlet of the nozzle and the paddle wheel blade is too close or too far, the hydraulic pressure required for driving the paddle wheel is correspondingly increased, and the hydraulic pressure required for driving the paddle wheel is minimum only when the distance is moderate, so that the efficiency of the hydraulic mechanism is highest.

According to a preferred embodiment, the hydrodynamic means of the hydrodynamic spraying system comprise a first nozzle and a second nozzle which drive the blade in the same circumferential direction, wherein the direction of extension of the first nozzle body of the first nozzle and the direction of extension of the second nozzle body of the second nozzle can be arranged parallel, perpendicular or inclined to one another.

The two nozzles are used, so that the phenomenon that paddle wheel blades are not stressed continuously due to the gap between the paddle wheel blades under the condition of one nozzle can be avoided, because when the blades close to the first nozzle are gradually far away under the impact of liquid flow, the blades close to the second nozzle are gradually close to the liquid flow of the second nozzle, the power of the paddle wheel cannot be attenuated or interrupted, and the paddle wheel can obtain continuous and stable liquid flow impact force. Furthermore, if more than two nozzles are used simultaneously for the same liquid source, as the number of nozzles increases, the distribution of hydraulic pressure from the same liquid source to more nozzles may cause a certain reduction in hydraulic pressure per nozzle, i.e. each stream of liquid cannot provide sufficient power to the paddle wheel, which may cause the paddle wheel to be unable to drive the entire hydraulic sprinkler system, and the increased number of nozzles may result in a more complex structure, higher space requirements and assembly requirements, and thus increased costs.

According to a particular implementation of this preferred embodiment, the ejection direction of the first nozzles is perpendicular to the ejection direction of the second nozzles. Optionally, the spraying direction of the first nozzle is a horizontal direction, and the spraying direction of the second nozzle is a vertical direction; and vice versa. In this case, the jetting direction of the second nozzle may be set vertically upward or vertically downward, preferably vertically downward, to apply a larger impact force to the paddle wheel blade by the self-gravity of the liquid flow, making the hydraulic mechanism more efficient.

According to another particular embodiment of this preferred embodiment, the spraying direction of the first nozzles is parallel and opposite to the spraying direction of the second nozzles. Optionally, the jetting direction of the first nozzle and the second nozzle is a horizontal direction. Alternatively, the jetting direction of the first and second nozzles is a vertical direction.

Such a design allows flexibility in the positioning and relative orientation of the nozzles depending on the configuration and space of the hydraulic sprinkler system to achieve a more compact and efficient hydraulic sprinkler system.

According to a preferred embodiment, the blades of the paddle wheel are in the form of curved surfaces and the liquid stream from the nozzle is sprayed onto the concave surfaces of the blades. The structure enables the liquid flow to be fully contacted with the curved surface of the blade, and the contact area is increased, so that the blade can obtain more liquid flow impact force after being impacted by the liquid flow, and the efficiency is improved.

According to a preferred embodiment, the liquid entering the liquid inlet is partly passed via a first partial flow into the at least one spray pipe of the spray device and partly via a second partial flow into the spray nozzles. The structure enables the number of the components of the hydraulic spraying system to be less, the design to be simpler and the structure to be more compact.

According to a second aspect of the present invention, a dishwasher is proposed, comprising a hydraulic spraying system as described above.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto. In the drawings:

fig. 1 shows a schematic perspective view of a hydraulic spray system according to an embodiment of the present invention;

fig. 2 shows a schematic perspective view of a hydraulic sprinkler system according to an embodiment of the invention from another side;

fig. 3 illustrates a perspective view of the interconnected drive members, paddle wheel and spray tube of a hydraulic spray system according to one embodiment of the present invention;

fig. 4 shows a schematic perspective view of a spray mechanism of a hydraulic spray system according to an embodiment of the present invention;

FIG. 5 shows an exploded perspective view of the spray mechanism shown in FIG. 4;

fig. 6 shows a schematic perspective view of a paddle wheel of a hydraulic spray system according to an embodiment of the present invention;

FIG. 7 illustrates a front view of the paddle wheel shown in FIG. 6;

FIG. 8 is a graph showing the relationship between the paddle wheel blade force area and the hydraulic pressure required to drive the paddle wheel;

fig. 9 shows a schematic view of the positioning of the nozzles of a hydraulic spray system relative to the paddle wheel, according to one embodiment of the present invention;

FIGS. 10a and 10b show enlarged partial cross-sectional views I and II, respectively, of the nozzle shown in FIG. 9, i.e., enlarged partial cross-sectional views I and II, respectively, of a first nozzle and a second nozzle;

FIG. 11 schematically illustrates the effect of the angle between the spray direction of the nozzle and the tangent to the outer circle defined by the paddle wheel blade on the liquid stream impact force experienced by the paddle wheel blade;

FIG. 12 is a graph showing the relationship between the angle described in FIG. 11 and the amount of hydraulic pressure required to drive the paddle wheel;

FIG. 13 schematically illustrates the distance of the paddle wheel blade from the outlet port of the nozzle that is impacted by the liquid flow from the outlet port of the nozzle;

FIG. 14 is a graph showing the relationship between the distance shown in FIG. 13 and the hydraulic pressure value required to drive the paddle wheel;

figure 15 schematically illustrates the connection of a liquid inlet of a hydraulic spray system according to one embodiment of the present invention to a liquid inlet pipe;

FIG. 16 schematically shows a rubber member used in the loading port shown in FIG. 15;

FIG. 17 schematically shows a front view of the rubber member shown in FIG. 16;

FIG. 18 schematically shows a cross-sectional view of the rubber member shown in FIG. 16;

FIG. 19 schematically illustrates the engagement between the rubber member shown in FIG. 16 and the liquid inlet pipe;

fig. 20a and 20b schematically illustrate a perspective view and a front view, respectively, of an input shaft of a hydraulic spray system according to an embodiment of the present invention;

figure 21 schematically illustrates a cross-sectional view along line a-a of a paddle wheel of a hydraulic sprinkler system according to one embodiment of the present invention;

FIG. 22 schematically illustrates an enlarged view I in partial cross-section of the center hole of the paddle wheel shown in FIG. 21;

FIG. 23 schematically illustrates an enlarged partial plan view II of the center hole of the paddle wheel illustrated in FIG. 21;

figure 24 schematically illustrates in cross-section the connection between the input shaft shown in figures 20a and 20b and the central bore of the paddle wheel shown in figure 21;

FIG. 25 schematically illustrates a close-up view I of the connection shown in FIG. 24;

FIG. 26 schematically illustrates a perspective view of the input shaft shown in FIGS. 20a and 20b and the paddle wheel shown in FIG. 21 interconnected;

fig. 27 schematically illustrates an input hole for passage of an input shaft in a housing of a hydraulic sprinkler system according to an embodiment of the present disclosure;

figures 28 and 29 schematically illustrate a paddle wheel connected outside the housing and an input gear inside the housing by an input shaft passing through an input aperture, respectively, according to one embodiment of the present invention;

figures 30 and 31 schematically illustrate drain holes provided in the bottom of the housing according to one embodiment of the present invention;

figure 32 schematically illustrates a nozzle disposed in a housing according to an embodiment of the invention;

figure 33 schematically illustrates a perspective view of an assembly of an output gear and an output shaft connected thereto, according to an embodiment of the present invention;

FIG. 34 schematically illustrates a front view of the assembly shown in FIG. 33, and shows a close-up view II;

fig. 35 schematically illustrates a connection structure of shower pipes according to an embodiment of the present invention;

fig. 36a and 36b schematically show enlarged partial views I and II, respectively, of the connection structure of the shower pipe shown in fig. 35;

FIG. 37 schematically illustrates the connection of the output shaft shown in FIGS. 33 and 34 to the shower pipe described in FIGS. 34 and 35;

figures 38 and 39 schematically illustrate the connection of first and second ring sets, respectively, on the output shaft shown in figures 33 and 34, according to one embodiment of the present invention;

fig. 40 schematically illustrates a longitudinal cross-sectional view of a hydraulic sprinkler system according to one embodiment of the present disclosure;

fig. 41 schematically illustrates the spray pipe of the hydraulic spray system of fig. 40 in operation, according to an embodiment of the present invention;

fig. 42 and 43 schematically illustrate the clearance between the first and second ring sets and the housing, respectively, and fig. 42 and 43 also illustrate the clearance between the output gear and the housing, according to an embodiment of the present invention;

figure 44 schematically shows a perspective view of a first drive train of the transmission according to an embodiment of the invention;

figure 45 schematically shows a perspective view of a second drive train of the transmission according to an embodiment of the invention;

figure 46 schematically illustrates a perspective view of a first housing according to an embodiment of the invention;

fig. 47 schematically illustrates a perspective view of a second housing according to an embodiment of the invention;

FIG. 48 schematically illustrates an exploded perspective view of the assembly of the first drive train illustrated in FIG. 44 and the first housing illustrated in FIG. 46;

FIG. 49 schematically illustrates an exploded perspective view of the assembly of the second drive train illustrated in FIG. 45 and the second housing illustrated in FIG. 47;

figures 50a and 50b schematically show a front view and a top view, respectively, of a connection between an intermediate output shaft and a gear according to an embodiment of the invention;

FIG. 51 schematically illustrates a perspective view and a cross-sectional view of the intermediate output shaft illustrated in FIGS. 50a and 50b after connection with a gear;

fig. 52 and 53 show schematic perspective views with different sides of the first housing mounted under the second housing;

figures 54-58 schematically illustrate a connection between a first housing and a second housing according to an embodiment of the present invention;

figure 59 schematically illustrates the connection of a hydraulic spray system in a dishwasher according to one embodiment of the present invention;

figure 60 schematically illustrates a connection structure for a hydraulic spray system for connection in a dishwasher, in accordance with one embodiment of the present invention;

fig. 61 schematically illustrates a side view of a hydraulic sprinkler system according to one embodiment of the present invention after installation in a dishwasher.

It should be noted that throughout the drawings, identical or similar parts, structures or elements are provided with identical or similar reference numerals.

Detailed Description

In order to make the technical solution of the present invention, its purpose, technical solution and advantages become clearer, the drawings of the embodiments of the present invention will be combined hereinafter, and the technical solution of the embodiments of the present invention will be clearly and completely described. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Fig. 1-6 and 9 show a hydraulic sprinkler system 1 according to a first embodiment of the present invention, comprising:

a hydrodynamic mechanism, comprising:

paddle wheel 100, comprising a plurality of blades 101 distributed in the circumferential direction,

at least one nozzle 111, 112 communicating with a source of liquid for spraying a stream of liquid towards the blades 101 to drive the paddle wheel 100 in rotation,

a transmission mechanism 20, comprising:

a drive member comprising: an input gear 202 driven to rotate by the paddle wheel 100 through an input shaft 201; and at least one output shaft 211, 218 connected directly or indirectly to the input gear 202 and serving to output the rotational motion of the paddle wheel 100,

the housing 300, carrying the transmission member,

a spray mechanism 40 comprising at least one spray pipe 401, 402 driven for rotational movement by the at least one output shaft 211, 218.

I.e. in the hydraulic sprinkler system 1 according to the first embodiment of the present invention, as shown in fig. 1-6 and 9, the flow of liquid from the liquid source is sprayed through said at least one nozzle 111, 112 onto the blades 101 of the paddle wheel 100, the hydrodynamic force exerted on the blades 101 thus drives the paddle wheel 100 in a rotational movement, the paddle wheel 100 in turn driving the input gear 202 in rotation via the input shaft 201 to which it is rotationally fixedly connected, the input gear 202 in turn being directly or indirectly connected to and driving in rotation said at least one output shaft 211, 218, the at least one output shaft 211, 218 in turn transmits the rotational movement to the at least one shower 401, 402 rotationally fixedly connected thereto, thereby driving the at least one shower 401, 402 into a rotational movement, thereby enabling the transmission of a hydraulic torque from the hydraulically driven paddle wheel 100 to the at least one shower 401, 402.

According to an embodiment of the paddle wheel 100 used in the hydrodynamic mechanism of the hydrodynamic sprinkler system 1, as shown in fig. 6 and 7 for example, the paddle wheel 100 has a central portion 102 and a plurality of blades 101 extending radially outward from the central portion 102, the plurality of blades 101 are preferably evenly distributed in the circumferential direction and have the same configuration, i.e., the radially outer ends 103 of the plurality of blades 101 continuously form an outer circle 104, so that the paddle wheel 100 has even mass distribution and thus even rotation, and at the same time, the impact force exerted by the fluid flow on the blades 101 is even, so that the paddle wheel 100 has a stable rotation speed and no unbalance or unbalance occurs. The number of the blades 101 is set to ensure that there are blades 101 remaining in the impact of the liquid flow at the moment, and each blade 101 preferably has a certain curvature, as shown in fig. 6 and 7, and has a radially inner impact end 105 and a radially outer impact end 106 on both sides of the curved bottom near the flow passage of the liquid flow, which configuration enables the liquid flow to sufficiently contact with the curved surface of the blade 101, increasing the contact area, and the arrow F10 in fig. 7 shows the direction of the liquid flow after the liquid flow contacts the blade 101, thereby ensuring that the blade 101 can receive more liquid flow impact force when impacted by the liquid flow, and improving the efficiency.

Preferably, the nozzle 111, 112 according to the present invention is arranged such that the intersection point of the liquid flow ejected from its liquid outlet port 1111, 1121 with the corresponding blade 101 is located at the middle portion of the blade 101 in the axial direction, i.e. the intersection point of the liquid flow ejected from the liquid outlet port 1111, 1121 of the nozzle 111, 112 with the paddle wheel blade 101 is located at half the axial width of the paddle wheel blade 101. This arrangement maximizes the force area of the paddle wheel blades 101 and minimizes the hydraulic pressure required to drive the paddle wheel 100 to rotate. The graph in fig. 8 schematically shows the relationship between the force-bearing area of the paddle wheel blade 101 and the hydraulic pressure P at the nozzle outlet ports 1111, 1121.

As shown in fig. 9, 10a and 10b, the hydraulic mechanism of the hydraulic spray system 1 according to the present invention further comprises at least one nozzle 111, 112 communicating with the liquid source for ejecting a flow of liquid towards the blades 101 of the paddle wheel 100 to drive the paddle wheel 100 in rotation, as shown in fig. 9, the nozzle 111, 112 according to the present invention is arranged close to the outer circle 104 defined by said plurality of blades 101 of the paddle wheel 100, and the flow of liquid ejected from the nozzle 111, 112 is close to the radially outer end 103 of the blade and the ejection directions D1, D2 are parallel to the tangent of said outer circle 104, as shown in fig. 9, the positioning of the nozzle 111, 112 close to the outer circle 104 of the paddle wheel blades 101 allows the paddle wheel 100 to obtain a greater impact torque, as can be seen from the torque formula M F × L, the greater the torque M in the case that the flow impact force F is constant, the greater the L, the smaller the torque M, the smaller the hydraulic torque M is the smaller the angle between the ejection direction D1, D2 of the flow ejected from the nozzle 111, 112 and the tangent of said outer circle 104, the paddle wheel is assumed to be the same as the hydraulic torque value of the tangential force of the tangential direction of the tangential line P of the paddle wheel 100, thus the hydraulic force of the same, the hydraulic force of the paddle wheel 100 is equal tangential line P +.

Fig. 10a and 10b show a partial enlarged cross-sectional view of the nozzle 111, 112 according to the present invention, as shown, the nozzle 111, 112 includes a liquid inlet port 1111, 1121 and a liquid outlet port 1112, 1122, and the nozzle 111, 112 is preferably configured such that the size of its liquid outlet port 1112, 1122 is smaller than the size of its liquid inlet port 1111, 1121, which configuration is advantageous for increasing the hydraulic pressure at the liquid outlet port 1112, 1122, thereby ensuring higher efficiency of the hydraulic mechanism.

In the present invention, as shown in fig. 11 and 13, the outer circle 104 defined by the plurality of blades 101 of the paddle wheel 100 has a radius R, and a distance L1 from a liquid outlet port of the nozzle is a point Q where a line passing through the center of the paddle wheel 100 and perpendicular to the ejection directions D1, D2 of the nozzle 111, 112 intersects the ejection direction line, preferably a value of L1 satisfies 0.775R < L1< 0.825R. This is because if the distance between the nozzles 111 and 112 and the paddle wheel blade 101 is too close or too far, the hydraulic pressure required to drive the paddle wheel 100 will be correspondingly greater, and only if the distance is appropriate, the hydraulic pressure required to drive the paddle wheel 100 will be minimal, thereby maximizing the efficiency of the hydrodynamic mechanism. The graph in fig. 14 shows the relationship between the L1 value and the hydraulic pressure value P.

As shown in fig. 9, 10a and 10b, the nozzle 111, 112 according to the present invention is configured to further include a nozzle body 1113, 1123, and the nozzle 111, 112 is configured such that the ejection directions D1, D2 of the ejected fluid from the liquid outlet ports 1112, 1122 of the nozzle 111, 112 may be at any angle with the extension directions D3, D4 of the nozzle body, for example, the liquid outlet port 1112 of the first nozzle 111 in fig. 10a is disposed such that the ejection direction D1 is perpendicular to the extension direction D3 of the nozzle body, and the liquid outlet port 1122 of the second nozzle 112 in fig. 10b is disposed such that the ejection direction D2 is parallel to the extension direction D4 of the nozzle body. The figures are exemplary embodiments only, and other angular relationships between the direction of the spray of the outlet port of the nozzle and the direction of extension of the nozzle body are possible and within the scope of the invention. This configuration of the spray nozzles allows the spray nozzles to be arranged making the most of the available space of the hydraulic spray system and facilitates the integration of the spray nozzles in the hydraulic spray system, thereby enabling a more compact hydraulic spray system.

According to the utility model discloses a hydraulic mechanism can set up one, two, three or more nozzles. According to a preferred embodiment, as shown in fig. 1, 9 and 10a-10b, the hydrodynamic device according to the present invention comprises two nozzles, and these two nozzles are a first nozzle 111 and a second nozzle 112 configured to drive the paddle blade 101 in the same circumferential direction, wherein the extension directions of the first nozzle body 1113 of the first nozzle 111 and the second nozzle body 1123 of the second nozzle 112 can be arranged parallel, perpendicular or inclined to each other, as in fig. 9 the first nozzle body 1113 of the first nozzle 112 and the second nozzle body 1123 of the second nozzle 112 are arranged parallel to each other, but the first injection direction D1 of the first nozzle 111 and the second injection direction D2 of the second nozzle 112 are perpendicular to each other. The two nozzles are used, so that the phenomenon that paddle wheel blades are not stressed continuously due to the gap between the paddle wheel blades under the condition of one nozzle can be avoided, because when the blades close to the first nozzle are gradually far away under the impact of liquid flow, the blades close to the second nozzle are gradually close to the liquid flow of the second nozzle, the power of the paddle wheel cannot be attenuated or interrupted, and the paddle wheel can obtain continuous and stable liquid flow impact force. Furthermore, if more than two nozzles are used for the same liquid source, as the number of nozzles increases, the distribution of hydraulic pressure from the same liquid source to more nozzles may cause a certain reduction in hydraulic pressure per nozzle, i.e. each liquid flow cannot provide sufficient hydraulic pressure, which may cause the paddle wheel to be unable to drive the whole hydraulic spraying system, and the larger number of nozzles makes the structure more complicated and the space requirement higher, thereby increasing the cost.

According to a specific embodiment, as shown in fig. 9, the jetting direction D1 of the first nozzle 111 is perpendicular to the jetting direction D2 of the second nozzle 112. For example, the ejection direction D1 of the first nozzle 111 is in the horizontal direction, and the ejection direction D2 of the second nozzle 112 is in the vertical direction; or vice versa. In this case, the ejection direction D2 of the second nozzle 112 may be set vertically upward or vertically downward, preferably vertically downward, to apply a larger impact force to the paddle wheel blade 101 by the self-gravity of the liquid flow, so that the hydrodynamic mechanism is more efficient.

According to another particular embodiment, not shown, the ejection direction D1 of the first nozzle 111 is parallel and opposite to the ejection direction D2 of the second nozzle 112. For example, the spraying direction of the first nozzle 111 and the second nozzle 112 is a horizontal direction, for example, the first nozzle 111 is disposed at the top of the paddle wheel 100, and the second nozzle 112 is disposed at the bottom of the paddle wheel 100. Alternatively, the jetting direction of the first nozzle 111 and the second nozzle 112 is a vertical direction, for example, the first nozzle 111 is disposed at the right side of the paddle wheel 100, and the second nozzle 112 is disposed at the left side of the paddle wheel 100. Other positional relationships between the two nozzles or the plurality of nozzles are possible and within the scope of the present invention.

As shown in fig. 1-3, the hydraulic sprinkler system 1 according to the present invention further comprises a transmission mechanism 20 for transmitting the rotational movement of the paddle wheel 100 to the sprinkler system 40, according to the first embodiment of the present invention, the transmission mechanism 20 comprises a housing 300, an input gear 202 disposed within the housing 300 and at least one output shaft 211, 218 (shown in fig. 3), wherein the input gear 202 is connected with the paddle wheel 100 through an input shaft 201 passing through the housing 300 and is driven to rotate by the paddle wheel 100, the at least one output shaft 211, 218 is connected with the input gear 202 directly or indirectly through other intermediate transmission members to transmit the rotational movement from the input gear 202 to the output shaft 211, 218, and the output shaft 211, 218 transmits the rotational movement to the sprinkler pipes 401, 402 of the sprinkler mechanism 40 connected thereto.

In a specific embodiment, as shown in fig. 1, 15 and 16, the hydrodynamic mechanism further includes an inlet port 107 disposed on the housing 300 of the transmission mechanism 20, and the nozzles 111, 112 may also be disposed on the housing 300 and communicate with the inlet port 107. Liquid from the liquid source enters the hydraulic sprinkler system 1 through the liquid inlet 107, and the liquid entering the liquid inlet 107 partly enters the at least one sprinkler pipe 401, 402 of the sprinkler mechanism 40 via a first branch and partly enters the nozzles 111, 112 via a second branch. The arrangement of the liquid inlet 107 and the nozzles 111 and 112 fully allows the size of the hydraulic sprinkler system 1 to be reduced and the number of the components to be reduced by utilizing the structure of the housing 300 and skillfully utilizing the relative position relationship between the housing 300 and the paddle wheel 100, thereby making the structure thereof simpler and more compact. Preferably, the inlet port 107 is disposed in the housing 300 at approximately the same level as the paddle wheel 100 to ensure minimal loss of hydraulic pressure transmitted to the paddle wheel 100.

More specifically, as shown in FIGS. 15-19, inlet tube 108 is connected to inlet port 107 disposed in housing 300, and for this purpose, rubber member 109 is disposed at the end of inlet port 107 that receives the inlet tube, and rubber member 109 is shown in FIG. 17, FIG. 18 is a cross-sectional view of rubber member 109, which has support wall 1091 and action wall 1092, support wall 1091 and action wall 1092 having an angle β therebetween, angle β being in the range of 0-90, and the value of angle β being settable in accordance with the hydraulic pressure of inlet port 107, support wall 1091 acting in abutment with the inner wall of inlet port 107 to serve as a support fixing, action wall 1092 having a guide ramp 1093 to serve as a guide for abutment of inlet tube 108 in inlet port 107, to facilitate connection of inlet tube 108. preferably, as shown in FIG. 19, inlet port 107 and inlet tube 108 are in interference fit to prevent fluid flow losses, while the angle β between support wall 1091 and action wall 1092 is such that the fluid flow losses due to the greater pressure of fluid flowing through inlet tube 1092 as the fluid flow through inlet port 1092 is less than fluid flow through contact angle β.

In a specific embodiment, as shown in fig. 1, 9, 15, 29 and 48, in the hydraulic sprinkler system 1 according to the present invention, the paddle wheel 100 is disposed outside the housing 300 of the transmission 20, and the input shaft 201 passes through the input hole 303 disposed in the housing 300 and connects the paddle wheel 100 outside the housing 300 and the input gear 202 inside the housing 300. In a particular embodiment, as shown in fig. 3, 20-29, the input shaft 201 is connected, on the one hand, by its connecting end in a rotationally fixed manner to the input gear 202, i.e. the input gear 202 rotates integrally with the input shaft 201, and, on the other hand, by its free end 2011 opposite to the connecting end in a rotationally fixed manner to the central bore 1021 of the paddle wheel 100, i.e. the input shaft 201 is connected in a rotationally fixed manner with the paddle wheel 100.

According to a preferred embodiment, as shown in fig. 27-29, a clearance fit is formed between the input shaft 201 and the input aperture 303 in the housing 300 to ensure that the input shaft 201 rotates frictionless in the input aperture 303, thereby enabling the rotational movement of the paddle wheel 100 to be efficiently transmitted to the input gear 202 without obstruction. In a specific embodiment, as shown in fig. 48, the clearance fit between the input shaft 201 and the input bore 303 is achieved via bearings 2012, the bearings 2012 fit into the input bore 303 and form an interference fit with the input bore 303 to ensure that no relative sliding occurs therebetween, and then the clearance fit between the input shaft 201 and the bearings 2012 to ensure frictionless obstructed rotation of the input shaft 201 in the bearings 2012

Due to this configuration, liquid from the liquid source and sprayed onto the paddle wheel blades 101 may enter the housing 300 of the transmission 20 through the inlet aperture 201. In order to avoid accumulation of liquid in the housing 300, at least one drainage hole 308, 309 is provided on the bottom of the housing 300, as shown in fig. 30-31, i.e. in the final mounted state of the housing 300, the drainage hole 308, 309 is located on the bottom side of the housing 300, to effectively and automatically drain liquid entering the housing 300. The drainage holes 308, 309 may be configured as circles, squares or other shapes, preferably circles. Preferably, the drain hole is equal to the outlet port (as shown in fig. 32) of the nozzle 112 in size, so as to ensure that even if a large amount of liquid seeps in, the seeped liquid can be drained automatically in time, so as to avoid premature damage of the transfer member 20 in the housing 300 due to corrosion of the liquid. Such a drain hole 308, 309 arrangement also avoids having to configure the housing to be sealed in order to ensure a liquid-free environment within the housing, as such a sealed housing would require a seal, such as a rubber seal, to be provided between the input hole 303 and the input shaft 201, which would cause the input shaft 201 to experience friction and drag when rotating, thereby reducing the transmission efficiency of the input shaft 201.

Furthermore, in the case of a hydraulic sprinkler system 1 according to the present invention used in a dishwasher, the provision of such drain holes is particularly advantageous, since it will help to drain away the dirt and liquid that accidentally enters the housing outside the housing, guaranteeing the sanitation inside the housing, inhibiting the growth of bacteria.

According to a preferred embodiment, as shown in fig. 20a to 26, the free end 2011 of the input shaft 201 is connected with the central hole 1021 of the paddle wheel 100 through a snap structure, so that the free end 2011 of the input shaft 201 is also called as a snap end. According to a particular embodiment, as shown in fig. 20a and 20b, a peripheral groove 2013 is provided near the snap-in end of the input shaft 201, the peripheral groove 2013 preferably being a circumferential groove along the entire outer circumference of the input shaft 201. Accordingly, as shown in fig. 21-23, a snap-in portion (fig. 21-23) is provided in the central bore 1021 of the paddle wheel 100 for cooperating with the peripheral groove 2013 of the snap-in end of the input shaft 201, the snap-in portion preferably being a plurality of radially inwardly extending snaps 1013 regularly distributed along the periphery of the central bore 1021 of the paddle wheel 100, the number of the snaps 1013 preferably being three to six, here shown as four. More specifically, a first flat portion 2012 is provided at the snap-in end of the input shaft 201, and a second flat portion 1012 (fig. 22-23) fitted with the first flat portion 2012 is provided at the center hole 1021 of the paddle wheel 100. In this embodiment, when the paddle wheel 100 is assembled with the input shaft 201, the first flat 2012 and the second flat 1012 serve, on the one hand, to guide the insertion of the input shaft 201 in the central hole 1021 of the paddle wheel 100 and the mutual alignment between the input shaft 201 and the central hole 1021 of the paddle wheel, and, on the other hand, to prevent relative rotation in the circumferential direction between the paddle wheel 100 and the input shaft 201 when the paddle wheel 100 is rotated, avoiding circumferential slipping, i.e., ensuring that the input shaft 201 and the paddle wheel 100 rotate integrally. Furthermore, the catches 1013 in the central hole 1021 of the paddle wheel fall into the peripheral grooves 2013 on the input shaft 201, thereby fixing the paddle wheel 100 and the input shaft 201 to each other in the axial direction, which acts to prevent axial slippage.

Alternatively, other forms of grooves on the input shaft are possible, for example they do not extend along the entire circumference of the input shaft, or one or more grooves spaced apart from one another may be provided. Alternatively, the number of the first flat portion and the second flat portion is two, respectively. Alternatively, other snap-fit structures for achieving a snap-fit connection between the paddle wheel and the input shaft are possible and within the scope of the present invention.

According to the invention, the input gear 202 of the transmission 20 transmits the rotational movement to at least one output shaft 211, 218. According to one embodiment, not shown, the input gear is directly connected to the output shaft to transmit the rotary motion. According to another embodiment, as illustrated in fig. 3, the input gear transmits the rotational motion to the at least one output shaft via a series of intermediate transmission members, for example comprising gears and shafts.

For clarity of description of the present invention, a first output shaft 211 of the at least one output shaft 211, 218 and a corresponding first shower 401 and first output gear 213 connected with the first output shaft 211 will now be described by way of example only. Unless otherwise indicated, other output shafts and corresponding shower and output gear configurations in a hydraulic sprinkler system according to the present disclosure may be referred to the description regarding first output shaft 211 and corresponding first shower 401 and first output gear 213.

According to the utility model discloses, first output shaft 211 transmits rotary motion to the first shower 401 that sprays the correspondence of mechanism 40 to first output gear 213 is connected to the rotation fixedly. As shown in fig. 33, the first output shaft 211 is rotationally fixedly connected with the first output gear 213 through a connecting end thereof, that is, the first output shaft 211 rotates integrally with the first output gear 213, and the first output shaft 211 passes through a first output hole 311 provided in the housing 300. A central hole 2111 for receiving a mating end of the first shower 401 is provided in the first output shaft 211, and the first output shaft 211 and the first shower 401 are rotationally fixedly connected, i.e. both rotate integrally, so that a rotational movement is transmitted to the first shower 401.

According to a preferred embodiment, the first output shaft 211 is connected to the first shower pipe 401 by a snap-fit structure, as shown in fig. 33-37. In a specific embodiment, a plurality of jaws 2113 extending in the axial direction and surrounding the mating end 4011 of the first shower (also referred to as corresponding snapping end 4011 in the case of snapping) are provided at the snapping end 2112 of the first output shaft 211, the number of jaws 2113 being 2-8, preferably 6; it is also preferred that the plurality of jaws 2113 are identical in structure and evenly distributed in the circumferential direction, as shown in fig. 33. At the free end of the jaws 2113, a number of snap-in portions 2114 are provided, preferably radially inwardly extending snap-hooks, while near the corresponding snap-in end 4011 of the first shower 401, a second peripheral groove 4114 is provided cooperating with the second snap-in portions 2114, the second peripheral groove 4114 preferably being a circumferential groove along the entire outer circumference of the corresponding snap-in end 4011 of the first shower 401, alternatively a number of separate grooves provided along the outer circumference of the corresponding snap-in end of the first shower.

It is further preferred that the dogs 2113 and the corresponding snap-in end 4011 of the first shower 401 are also provided with cooperating ribs 2115 and grooves 4115, as shown in fig. 33-37. For example, when the click end 2112 of the first output shaft 211 is provided with six pawls 2113, a second click portion 2114 extending radially inward may be provided at the free end of each of three mutually non-adjacent pawls, a rib 2115 extending in the axial direction may be provided at the inner wall of each of the other three mutually non-adjacent pawls, and a groove 4115 mating with the rib 2115 is provided on the corresponding click end 4011 of the first shower 401, and preferably the circumferential angle between the centers of two adjacent ribs is 120 °, and the circumferential angle between the centers of two adjacent hooks is also 120 °. Thus, as shown in FIG. 37, when the first shower 401 is snapped onto the first output shaft 211, the grooves 4115 on the first shower 401 are aligned with the ribs 2115 on the tabs 2113 and inserted into the first shower 401, and the snaps on the tabs 2113 drop into the second peripheral groove 4114 on the outer periphery of the first shower 401. Therefore, the insertion of the first spray pipe 401 into the central hole 2111 of the first output shaft 211 is guided by the matching of the grooves and the ribs, the relative rotation and displacement between the first spray pipe 401 and the first output shaft 211 in the circumferential direction are limited, the relative displacement between the first spray pipe 401 and the first output shaft 211 in the axial direction is limited by the matching of the hooks and the clamping grooves, and the stable rotational coupling between the first spray pipe 401 and the first output shaft 211 is realized. Such a configuration also ensures an evenly distributed snap action in the circumferential direction, making the snap connection between the first shower pipe 401 and the first output shaft 211 more robust and reliable.

Preferably, as shown in fig. 35, 36a and 36b, a slope portion 4116 is provided at an end of the corresponding click end 4011 of the first shower pipe 401, and the slope portion 4116 first contacts the central hole 2111 of the first output shaft 211 when the corresponding click end 4011 of the first shower pipe 401 is inserted into the central hole 2111 of the first output shaft 211, and functions to guide the insertion so as to facilitate the insertion of the first shower pipe 401.

According to a preferred embodiment of the present invention, as shown in fig. 33, a flange 2116 protruding radially outwards is further provided at the free end of the pawl 2113 of the first output shaft 211, while a first step 2117 is provided on the outer circumference of the first output shaft 211, the first step 2117 defining with the flange 2116 a first annular receiving portion 2118 on the outer circumference of the first output shaft 211 for receiving a first ring set 212 to be positioned outside the housing 300, as shown in fig. 2, 3, 33, 38, 39 and 45. The inner diameter of the first ring set 212 is configured to be smaller than the outer diameter of the first annular receiving portion 2118 of the first output shaft 211 to create an interference fit between the first ring set 212 and the first annular receiving portion 2118. Thus, the first ring set 212 needs to be force press fit into the first annular receiving portion 2118. One of the functions of such a first collar 212 is to further stabilize the connection between the first output shaft 211 and the first shower pipe 401 by applying a radially inward force to the first output shaft 211 and to achieve fixation and positioning of the first output shaft 211 and the first shower pipe 401 relative to the housing 300. The first ring member may then be in the form of a collar, such as collar 219 shown in figure 39. In this case, providing the snap-in end 2112 of the first output shaft 211 in the form of a claw, gives the snap-in end 2112 a certain elastic deformability, facilitating on the one hand the insertion of the first shower 401 in the central hole 2111 of the first output shaft 211 and on the other hand also the nesting of the first collar piece 212 in the first annular receiving portion 2118 on the outer periphery of the first output shaft 211. This arrangement is suitable for connection between other output shafts and corresponding shower and collar members.

It is also preferable that, in order to more easily fit the first ring kit 212 into the first annular receiving portion 2118, the ends of the jaws 2113 of the first output shaft 211 are preferably provided with a rounded ramp structure 2119 to guide and facilitate the insertion of the jaws 2113 in the ring of the first ring kit 2118, as shown in fig. 34.

A ring set, such as the first ring set 212, may on the other hand serve as an intermediate transmission member for driving the output shaft into a rotational movement, i.e. for transmitting a rotational movement to the output shaft, in which case the ring set may be, for example, an intermediate transmission gear 212 as shown in fig. 2, 3, 38 and 45. For example, as shown in fig. 2, 3 and 38 and 45, the first ring housing member may be an intermediate transmission gear 212, the intermediate transmission gear 212 transmits the rotational motion obtained by the intermediate transmission gear 212 to the first output shaft 211 through the interference fit with the first output shaft 211 as described above, the first output shaft 211 transmits the rotational motion to the first shower pipe 401 through the rotationally fixed connection with the first shower pipe 401 as described above, and the first output gear 213 rotationally fixedly connected with the first output shaft 211 actually functions to output the rotational motion of the first output shaft 211 to other transmission members. I.e. the ring set has a triple effect in this case: and the output shaft and the corresponding spray pipe are positioned and fixed relative to the shell, and the rotary motion and the torque are transmitted to the output shaft. This configuration allows the number of component parts of the hydraulic sprinkler system to be reduced, assembly to be simplified, cost to be reduced, and a compact structure to be achieved.

In a more specific embodiment, as shown in fig. 1, 2, 3, 15 and 45, the hydraulic sprinkler system 1 according to the present invention further comprises a second output gear 217 directly or indirectly connected with the first output gear 213 and thereby obtaining a rotational movement, and correspondingly comprises a second output shaft 218 connected with the second output gear 217 in a rotationally fixed manner. Correspondingly, the spray mechanism 40 further includes a second spray pipe 402, and the second output shaft 218 is connected with the second spray pipe 402 and drives the second spray pipe 402 to rotate. That is, the torque transmission relationship here is as follows: the first output gear 213, which obtains a rotational movement from the first ring gear as the intermediate transmission gear 212, transmits the rotational movement directly or indirectly via another transmission means to the second output gear 217, which in turn drives the second output shaft 218 into a rotational movement, which in turn is transmitted by the second output shaft 218 to the second shower pipe 402. Preferably, the second shower 402 is connected to the second output shaft 218 in the same manner as the connection between the first shower 401 and the first output shaft 211. Alternatively, the first output gear 213 and the second output gear 217 rotate at the same speed, respectively the first output shaft 211 and the second output shaft 218 rotate at the same speed and the first shower 401 and the second shower 402 rotate at the same speed. Optionally also, the collar 219 located outside the housing 300, which does not transmit rotational motion, is received in a second annular receiving portion 2188 of the second output shaft 218 as a second set of rings, as shown in fig. 2, 3, 15, 39 and 45, preferably the second set of rings 219 is received in the second annular receiving portion 2188 in the same manner as the first set of rings 212 is received in the first annular receiving portion 2118.

It is noted that although the connection between the second output gear 217 and the second output shaft 218, between the second output shaft 218 and the second shower 402 and between the second output shaft 218 and the second ring set 219 may be the same as or similar to the connection between the first output gear 213 and the first output shaft 211, between the first output shaft 211 and the first shower 401 and between the first output shaft 211 and the first ring set 212, respectively, the collar as the second ring set 219 only serves here to reinforce the connection between the second shower and the second output shaft and the positioning and fixing of the two with respect to the housing and is not used for transmitting torque or rotational movement.

According to a preferred embodiment, as shown in fig. 40-43, the output shafts 211, 218 form a clearance fit with the output holes 311, 318 in the housing 300 to ensure that the output shafts 211, 218 rotate in the output holes 311, 318 without friction, thereby enabling efficient transmission of rotational motion. And it is further preferred to provide that the faces of the output gears 213, 217 facing the inner wall of the housing 300 are at a distance L2 from the inner wall of the housing, which is particularly advantageous in the case of an assembled shower 401, 402 which is positioned horizontally in the operating state, as shown in particular in fig. 41, in which case the shower 401, due to its own weight and the weight of the water inside it and the resulting inertia, may deviate from the central axis by an angle of about 4 ° during rotation, the deviation of the shower from its central axis generating a circumferential or radial force on the output shafts 211, 218, resulting in the output shafts 211, 218 also deviating from their central axis during operation and thus possibly causing the output shafts 211, 218 to come into contact with the inner wall of the output holes 311, 318, and the output shafts 211, 218 may also pull the output gears 213, 217 into contact with the inner wall of the housing, such that the output shafts 211, 217 may deviate from their central axis during operation, 218 and the corresponding output gears 213, 217 are subject to resistance to rotation and are unable to effectively transmit rotational motion. Therefore, providing clearance fit between the output shafts 211, 218 and the output holes 311, 318, and further preferably providing a distance L2 between the faces of the output gears 213, 217 facing the inner wall of the housing and the inner wall of the housing, it is possible to avoid the above-mentioned contact and friction, ensuring efficient transmission of the rotational motion.

For the same reason, it may also be provided that there is a short distance L3 between the ring sleeves 212, 219 and the outer wall of the housing 300, as shown in fig. 43, which effectively prevents the deviation of the output shafts 211, 218 from their central axes from causing the ring sleeves 212, 219 to contact the outer wall of the housing and create frictional resistance, ensuring that the output shafts effectively transmit rotational motion.

Alternatively, as shown in fig. 40, 42-43, two spacers 403, 404, 405, 406 may be provided between the face of each output gear 213, 217 facing the inner wall of the housing and the inner wall of the housing 300, as described above, and if direct contact occurs with the housing 300 during rotation of the output gears 213, 217, the friction due to the contact increases the resistance against rotation. The provision of two spacers between each output gear and the housing avoids such direct contact between the output gears 213, 217 and the housing 300, and the friction between the spacers causes the spacers to act as a lubrication for the output gears 213, 217 to eliminate friction, thereby effectively reducing the frictional resistance of the output gears 213, 217 during rotation and facilitating smooth operation of the output gears 213, 217. As shown in fig. 40 and 42 to 43, sealing members 407 and 408 such as seal rings may be provided to be attached to the surfaces of the output gears 213 and 217 facing the inner wall of the housing, so as to ensure sealability between the output gears 213 and 217 and the housing 300 and reduce the loss of the hydraulic pressure of the liquid entering the shower pipe. Specifically, when the transmission mechanism has a high hydraulic pressure inside, the output gears 213 and 217 are pressed to be attached to the housing, and the sealing members 407 and 408 are pressed by the output gears to perform a sealing function.

According to a particular implementation of the first embodiment of the present invention, the transmission means of the transmission mechanism 20 of the hydraulic sprinkler system 1 further comprise other gears or shafts for speed change or for transmitting rotary motion between the input gear 202 and said at least one output shaft 213, 217 or between the different output shafts 213, 217, as shown in fig. 3. In the particular embodiment shown in fig. 3, the transmission mechanism 20 includes the input shaft 201 connected to the paddle wheel 100, the input gear 202 connected to the input shaft 201, as described above, and further, the transmission mechanism 20 includes the first duplicate gear 203 meshed with the input gear 202, the second duplicate gear 204 meshed with the first duplicate gear 203, the third duplicate gear 205 meshed with the second duplicate gear 204, the fourth duplicate gear 206 meshed with the third duplicate gear 205, the first single gear 207 meshed with the fourth duplicate gear 206, the second single gear 209 connected to the first single gear 207 through the shaft 2071 and rotating integrally therewith, the third single gear 210 meshed with the second single gear 209, the fourth single gear 212 meshed with the third single gear 210 and serving as a first ring set on the first output shaft 211, the first output gear 213 connected to the fourth single gear 212 through the first output shaft 211, and the second output gear 213, A fifth single gear 214 engaged with the first output gear 213, a sixth single gear 215 engaged with the fifth single gear 214, a fifth double gear 216 engaged with the sixth single gear 215, a second output gear 217 engaged with the fifth double gear 216, and a second output shaft 218 connected to the second output gear 217. Wherein, as shown in fig. 2, 44-45, the input gear 202, the first output gear 213 and the second output gear 217 are positioned in the housing 300 by the input shaft 201, the first output shaft 211 and the second output shaft 218, respectively, the fourth single gear 212 is positioned outside the housing 300 by the first output shaft 211, the third single gear 210 directly engaged with the fourth single gear 212 is positioned outside the housing by a shaft 2101, the first single gear 207 directly engaged with the third single gear 210 is positioned outside the housing by a shaft 2071, and the first duplicate gear 203, the second duplicate gear 204, the third duplicate gear 205, the fourth duplicate gear 206, the first single gear 207, the fifth single gear 214, the sixth single gear 215 and the fifth duplicate gear 216 are positioned inside the housing 300 by a corresponding fixed shaft 2031, a fixed shaft 2041, a fixed shaft 2051, a fixed shaft 2061, a shaft 2071, a fixed shaft 2141, a fixed shaft 2151 and a fixed shaft 2161, respectively.

In this particular embodiment, the rotational motion of the paddle wheel 100 is transmitted in the following path: paddle wheel 100 transmits rotational motion to input gear 202 via input shaft 201 (e.g., as described above), input gear 202 in turn via first duplicate gear 203, second duplicate gear 204, third duplicate gear 205, fourth duplicate gear 206, first single gear 207, the shaft 2071, the second single gear 209, and the third single gear 210 transmit rotational motion to the fourth single gear 212 as a first ring set, the fourth single gear 212 transmits rotational motion to the first output gear 213 via the first output shaft 211 (e.g., as described above), the first output shaft 211 also transmits rotational motion to the first shower 401 (e.g., as described above), the first output gear 213 in turn transmits rotational motion to the second output gear 217 via the fifth single gear 214, the sixth single gear 215, and the fifth duplicate gear 216, and the second output gear 217 transmits rotational motion to the second shower 402 via the second output shaft 218 (e.g., as described above). It should be noted that more or less intermediate transmission members may be used according to actual requirements, the reduction ratios between the gears may be set according to actual requirements, and more or less or differently oriented shower pipes may be set according to actual requirements.

In a particular embodiment according to the first embodiment, the shaft 2071 is connected in rotation with the first single gearwheel 207 by means of a connecting end, the shaft 2071 passing through the casing 300 and being connected in rotation with the second single gearwheel 209 by means of its free end 2072. Preferably, the free end 2072 of the shaft 2071 is connected with the second single gear 209 through a snap structure. For example, as shown in fig. 50a, 50b and 51, two third flat parts 2073, 2074, preferably two third flat parts 2073, 2074 symmetrically arranged with respect to the central axis of the shaft 2071, may be provided at the free end 2072 of the shaft 2071, and correspondingly two fourth flat parts 2075, 2076 engaged with the two third flat parts are provided in the center hole of the second single gear 209. In addition, it is also possible to provide a catch 2077, 2078 at the tip of each third flat part 2073, 2074, which projects radially outwards, while a step 2079 is provided at the outer periphery of the shaft 2071, the catch 2077, 2078 together with the step 2079 defining an annular receptacle 2080 on the periphery of the shaft 2071 for receiving the second single gear 209. When the second single gear 209 is mounted in this ring-shaped receptacle 2080, the third and fourth flat parts 2073, 2074 and 2075, 2076 serve to guide the mounting and, after the mounting is completed, define relative rotation between the second single gear 209 and the shaft 2071 in the circumferential direction, while the catches 2077, 2078 catch on the end edges of the central hole of the second single gear 209, together with the step 2079 limiting axial displacement of the second single gear 209 on the outer periphery of the shaft 2071.

In a more specific embodiment, as shown in fig. 50a, 50b and 51, each catch 2077, 2078 is provided separately from the corresponding third flat part 2073, 2074, and the shaft 2071 is hollow between the two opposing catches 2077, 2078, thereby allowing the catches 2077, 2078 to have a certain elasticity in the radial direction such that the two catches 2077, 2078 converge towards the center of the shaft 2071 when inserted into the central hole of the second single gear 209. And thus enables easier passage through the central bore of the second single gear 209, completing the installation of the second single gear 209 in the annular receptacle 2080 of the shaft 2071.

It is noted that the snap-fit structure between the shaft 2071 and the second single gear 209 described herein is merely exemplary, and any alternative that can achieve a rotationally fixed connection of the shaft 2071 and the second single gear 209 is within the scope of the present invention.

In the case where the shaft 2071 connects two transmission members respectively provided inside and outside the casing 300, for example, in the above-described embodiment, the shaft 2071 is used to connect the first single gear 207 respectively provided inside the casing 300 and the second single gear 209 outside the casing 300, and the shaft 2071 will pass through the hole 306 formed in the casing 300. In this case, preferably, in order to ensure that the shaft 2071 transmits rotational motion in a frictionless manner, a clearance fit is formed between the shaft 2071 and the hole 306. Thus, in this case, the shaft 2071 may be referred to as an intermediate output shaft 2071, and the apertures 306 may be referred to as intermediate output apertures 306, respectively.

As shown in fig. 4 and 5, the spray mechanism 40 of the hydraulic spray system 1 according to the present invention includes at least one shower pipe 401, 402, and a plurality of spray holes 4017, 4018 are provided on the at least one shower pipe 401, 402 along a longitudinal direction of the shower pipe. Preferably, the plurality of shower holes 4017, 4018 are equidistantly distributed in a spiral manner around the shower pipes 401, 402 over a range of 360 °. It is also preferred that the plurality of shower holes 4017, 4018 are configured to be oblique rather than perpendicular with respect to the longitudinal centerline of the showers 401, 402.

Furthermore, as shown in fig. 4 and 5, end caps 409, 410 are provided at the free ends 4031, 4041 of the showers 401, 402 opposite their corresponding snap-in ends 4011, 4021, and the free ends 4031, 4041 provided with the end caps 409, 410 are rotatably mounted into the barrel portions 413, 414 of a connector 411, which connector 411 is used to secure the free ends 4031, 4041 of the showers in the environment of use of the hydraulic sprinkler system 1. In a particular embodiment, the shower mechanism 40 comprises two showers 401, 402 and the connection 411 for these two showers 401, 402 is an integral part comprising two cylindrical portions 413, 414, which allows to reduce the number of parts of the shower mechanism 40 and to fix the free ends of all showers in a simpler manner.

A hydraulic shower mechanism according to a second embodiment of the present invention will be mainly described below. Differences of the second embodiment from the first embodiment will be mainly described herein, and therefore, as not specifically described herein, the configuration, arrangement, and positioning, orientation, and connection manner of the relevant components of the first embodiment with respect to each other may also be applied to the second embodiment, and description thereof will be omitted unless it is incompatible with the second embodiment.

According to a second embodiment of the present invention, as shown in fig. 1, 2, 44-49, the transmission member of the transmission mechanism 20 of the hydraulic sprinkler system 1 is included in the first transmission line 21 and the second transmission line 22, and the housing 300 of the transmission mechanism 20 of the hydraulic sprinkler system 1 correspondingly includes:

a first casing 301 carrying transmission members in the first transmission line 21, the first transmission line 21 including an input gear 202 driven to rotate by the paddle wheel 100 through an input shaft 201 passing through the first casing 301, and including an intermediate output shaft 2071 for outputting rotary motion to the outside of the first casing 301, as shown in fig. 44, 46, 48;

a second housing 302 carrying the transmission components in the second drive train 22, the second drive train 22 including an intermediate input shaft for transmitting rotary motion from an intermediate output shaft into the second housing 302, and including at least one output shaft 211, 218 passing through the second housing 302 for outputting rotary motion, as shown in fig. 45, 47, 49.

Namely, according to the utility model discloses a second embodiment allows the modular construction of the drive mechanism 20 of hydraulic spraying system 1, and this makes the standardization that can realize the module to realize standardized production, reduce the design degree of difficulty and product cost. For example, the second drive train 22 and the corresponding second housing 302, which are primarily used for outputting the rotational movement to the spray mechanism 20, can be designed as one module as standardized, i.e. for different application requirements, a unified second drive train 22 and second housing 302 can be used; the first transmission line 21 or the first housing 301 may be provided with gears having different reduction ratios or with different numbers of gears or other transmission members according to different application requirements; and vice versa. In addition, this modular construction facilitates assembly, maintenance and replacement of the product and allows for a more compact design of the transmission mechanism.

That is, in this second embodiment, the greatest difference from the first embodiment is that the transmission mechanism is divided into the first power train and the second power train, and the housing is divided into the first housing and the second housing for this purpose. The construction, arrangement and manner of connection, positioning and cooperation of the transmission members of the transmission mechanism with each other may still be the same as in the first embodiment, and these same details will not be described again.

As shown in fig. 44, 46 and 48, according to a specific embodiment of the second embodiment, the connection relationship of the input shaft 201, the input gear 202 and the paddle wheel 100 in the first transmission system 21 is the same as that described in the first embodiment. Furthermore, the first gear train 21 may also include other transmission members for transmitting the rotational motion of the input gear 202 to the intermediate output shaft 2071 in a variable or non-variable manner.

As shown in fig. 44 and 46, according to a particular implementation of the second embodiment, the first drive train 21 comprises in particular the following transmission members: a first double gear 203 meshing with the input gear 202, a second double gear 204 meshing with the first double gear 203, a third double gear 205 meshing with the second double gear 204, a fourth double gear 206 meshing with the third double gear 205, a first single gear 207 meshing with the fourth double gear 206, a second single gear 209 connected to the first single gear 207 through an intermediate output shaft 2071 and rotating integrally therewith, and a third single gear 210 meshing with the second single gear 209. For example, the second single gear 209 is disposed outside the first housing 301; for example, the second single gear 209 is connected to the intermediate output shaft 2071 in the same manner as the first embodiment. For example, the third single gear 210 is disposed outside the first housing 301 through the shaft 2101. Similarly to the first embodiment, the first duplicate gear 203, the second duplicate gear 204, the third duplicate gear 205, the fourth duplicate gear 206 and the first single gear 207 are respectively positioned in the first casing 301 by the corresponding fixed shaft 2031, the fixed shaft 2041, the fixed shaft 2051, the fixed shaft 2061 and the intermediate output shaft 2071.

Also, in this particular embodiment, the shaft 2071 is an intermediate output shaft, i.e., it outputs rotational motion to the exterior of the first casing 301. And the connection relationship among the first single gear 207, the intermediate output shaft 2071 and the second single gear 209 may be the same as or similar to that of the first embodiment. Also, to ensure that the intermediate output shaft 2071 transmits rotational motion in a frictionless manner, a clearance fit is formed between the intermediate output shaft 2071 and the intermediate output bore 306 of the first casing 301 for receiving the intermediate output shaft 2071, as described in accordance with the first embodiment.

Further, similarly to the first embodiment, as shown in fig. 30, at least one drain hole 308 is preferably provided at the bottom of the first casing 301 to drain out liquid and dirt that may enter the first casing 301, where the configuration and use of the drain hole 308 may be similar to those of the first embodiment.

As shown in fig. 45, 47 and 49, according to a specific implementation of the second embodiment, the connection relationship and connection manner of at least one output shaft 211, 218 and the corresponding output gear 213, 217, the corresponding shower 401, 402 and/or the corresponding collar member 212, 219 in the second drive train 22 may be the same as described in connection with the first embodiment. Furthermore, the second drive train 22 may also include other transmission members for transmitting the rotational movement of the intermediate output shaft 2071 into the second casing 302 in a variable or non-variable manner.

As shown in fig. 45, 47 and 49, according to a particular implementation of the second embodiment, the second drive train 22 comprises in particular the following transmission members: a fourth single gear 212 meshing with the third single gear 210 and acting as a first ring set on the first output shaft 211, a first output shaft 211 connected to the fourth single gear 212, the first output shaft 211 in turn being connected to a first output gear 213, a fifth single gear 214 meshing with the first output gear 213, a sixth single gear 215 meshing with the fifth single gear 214, a fifth double gear 216 meshing with the sixth single gear 215, a second output gear 217 meshing with the fifth double gear 216, a second output shaft 218 connected to the second output gear 217. As shown in fig. 47 and 49, the fourth single gear 212 is positioned outside the second housing 302 through the first output shaft 211, and the fifth single gear 214, the sixth single gear 215, and the fifth duplicate gear 216 are positioned inside the second housing 302 through the corresponding fixing shafts 2141, 2151, and 2161, respectively.

Also, in this particular embodiment, as shown in fig. 45 and 49, the first output shaft 211 serves as an intermediate input shaft at the same time, i.e., the first output shaft 211 is an intermediate input shaft that transmits the rotational motion from the intermediate output shaft 2071 into the second casing 302. And in such an embodiment the transmission of the rotary motion between the intermediate output shaft 2071 and the intermediate input shaft is achieved by the sequential meshing between the second single gear 209, the third single gear 210 and the fourth single gear 212, i.e. the intermediate output shaft 2071 outputs the rotary motion out of the first casing 301 and transmits the rotary motion to the second single gear 209 by a rotationally fixed connection with the second single gear 209 (as described in accordance with the first embodiment), the second single gear 209 in turn transmitting the rotary motion to the fourth single gear 212 via the third single gear 210. The connection relationship between the remaining respective transmission members and the transmission of the rotational motion can be referred to the first embodiment. Of course, this is only an exemplary embodiment, and other ways of achieving the transfer of rotational motion between the intermediate output shaft and the intermediate input shaft are possible and within the scope of the present invention; furthermore, other configurations in which the intermediate output shaft and the intermediate input shaft are realized with other transmission members are also possible and within the scope of the present invention.

It is noted that in this second embodiment, in a variant not shown, the intermediate output shaft and the intermediate input shaft may be one and the same piece, i.e. the intermediate output shaft or the intermediate output shaft passes through both the first and the second housing, in order to transmit the rotary motion and the torque from the first housing into the second housing.

Also, similarly to the first embodiment, at least one drain hole 309 is preferably provided at the bottom of the second housing 302 to drain out liquid and dirt that may enter the second housing 302, where the configuration and use of the drain hole 309 may be similar to those of the first embodiment, as shown in fig. 31.

Also, in this particular embodiment, the connection between the first shower 401 and the first output shaft 211 and/or the connection between the second shower 402 and the second output shaft 218 may be similar to the first embodiment, and still similarly to the first embodiment, the first ring set 212, which is an intermediate transfer gear and is disposed outside the second housing 302, may be received in the same manner in the first annular receiving portion 2118 of the first output shaft 211, and the collar, which is the second ring set 219 and is disposed outside the second housing 302, may be received in the second annular receiving portion 2188 of the second output shaft 218. And in the second embodiment, the matching relationship between the output shaft and the output hole, the output gear and the inner wall of the shell, and the ring sleeve member and the outer wall of the shell can be the same as those of the first embodiment, and will not be described in detail here.

Furthermore, the hydraulic mechanism of the hydraulic sprinkler system 1 according to the second embodiment may be generally similar to the first embodiment, except that the inlet port 107 communicating with the liquid source may be provided in the second housing 302, the nozzles 111, 112 may then be provided in the first housing, preferably the nozzles 111, 112 are provided in the first housing 301 adjacent to the paddle wheel 100, noting that in the second embodiment the number, configuration, positioning and orientation of the nozzles relative to the paddle wheel blades may be referred to the first embodiment. It is further preferred that the inlet port 107 is disposed in the second housing 302 proximate to the nozzles 111, 112 and paddle wheel 100 when the first and second housings 301, 302 are assembled so as to minimize loss of liquid flow and hydraulic pressure from the liquid source before reaching the paddle wheel blades 101. In addition, such a configuration allows the circulation of liquid to be achieved with the full use of the structure of the first and second housings 301 and 302 themselves, thereby reducing the number of component parts of the hydraulic sprinkler system, reducing material costs, and making the structure thereof more compact. It is to be noted that the liquid inlet pipe 108 may be installed in the liquid inlet provided in the second housing in the same manner as the first embodiment.

More specifically, the second housing 302 may be divided into a second housing main body 321 and a second housing cover 322, as shown in fig. 49, and the inlet port 107 is provided in the second housing cover 322. And the fifth single gear 214, the sixth single gear 215, and the fifth double gear 216 in the second power train 22 may be positioned in the second housing 302 by the second housing cover 322, and the first output gear 213 and the second output gear 217 may be positioned in the second housing 302 by the second housing main body 321.

In a specific embodiment, as shown in fig. 48, the first housing 301 also includes a first housing main body 311 and a first housing cover 312. And more specifically, the paddle wheel 100 is disposed outside the first housing 301 on the first housing main body 311 side, and the second single gear 209 and the third single gear 210 are disposed outside the first housing 301 on the first housing cover 312 side.

In a specific implementation of this second embodiment, the first shell 301 and the second shell 302 are assembled together by at least one pair of mutually cooperating connecting sides, as shown in fig. 58. The relative positioning between the first housing 301 and the second housing 302 along the direction of gravity may affect the positioning and orientation of the nozzles 111, 112 disposed in the first housing 301 relative to the paddle wheel blades 101. For example, in fig. 58, when the first casing 301 is installed above the second casing 302 in the direction of gravity, the first nozzle 111 and the second nozzle 112 provided in the first casing 301 may jet a liquid stream toward the paddle wheel blade 101 in the horizontal right and vertical upward directions, respectively, and generate driving hydraulic force; alternatively, in fig. 52 and 53, when the first housing 301 is installed below the second housing 302 in the direction of gravity, the first nozzle 111 and the second nozzle 112 thus provided in the first housing 301 may then jet a liquid stream toward the paddle wheel blade 102 in the horizontal leftward and vertical downward directions, respectively, and generate driving hydraulic force.

Furthermore, according to a preferred embodiment, the first casing 301 and the second casing 302 are connected by a snap structure, so that the assembly of the first casing 301 and the second casing 302 can be achieved in a very simple and convenient manner. Meanwhile, the first shell 301 and the second shell 302 are connected through the clamping structure, extra special tools are not needed, only the clamping structures matched with each other need to be aligned to enable the clamping to complete the connection operation, the mode is simple and easy to operate, the cost benefit is high, and due to the matching between the clamping structures, the first shell 301 and the second shell 302 can be firmly connected. Furthermore, the snap-fit structure generally occupies little space, allowing for a compact structure, yet without the strength of the first and second housings 301, 302 being compromised as may be possible with connectors such as screws, rivets, etc.

For example, as shown in fig. 54 to 58, a first concave portion 3131 and a first convex portion 3132 are provided on the first connection side surface 313 of the first housing 301, a second convex portion 3231 and a second concave portion 3232 respectively mated with the first concave portion 3131 and the first convex portion 3132 are respectively provided on the first corresponding connection side surface 323 of the second housing 302, and in an assembled state, the first connection side surface 313 of the first housing 301 faces the first corresponding connection side surface 323 of the second housing 302. Preferably, a first recess 3131 and a first protrusion 3132 are provided at opposite ends of the first connection side 313, respectively, to make the snap connection more stable, in particular in the radial direction. In this embodiment, when the first housing 301 and the second housing 302 are assembled together, the first protrusion 3132 on the first connecting side 313 of the first housing 301 will be engaged with the second recess 3232 on the first corresponding connecting side 324 of the second housing 302, and the second protrusion 3231 on the first corresponding connecting side 324 will be engaged with the first recess 3131 on the first connecting side 313. The clamping structure is simple to operate and cannot increase the size of the assembly.

Furthermore, the second housing 302 may further comprise a second corresponding connecting side 324 extending perpendicular to the first corresponding connecting side 323, and the first corresponding connecting side 323 and the second corresponding connecting side 324 define a receiving portion for receiving the first housing 301, and in the assembled state, the second corresponding connecting side 324 of the second housing 302 faces the second connecting side 314 of the first housing 301, as shown in fig. 54-58.

Further, a card slot 3141 may be further disposed on the second connecting side 314 of the first housing 301, and correspondingly, a card portion 3241 matching with the card slot 3141 is disposed on the second corresponding connecting side 324 of the second housing 302. Preferably, a barb 3242 is provided at the top end of the snap-in portion 3241, and correspondingly a reduced portion 3142 is provided at the upper end within the snap-in groove 3141, the barb 3242 being adapted to pass through the snap-in groove 3141 and snap over the reduced portion 3142 of the snap-in groove, as shown in fig. 56. Thus, the clamping groove 3141 is constructed in a bell mouth-shaped structure with a large lower port and a small upper port, the large lower port is favorable for accurate alignment of the clamping portion 3241 and the clamping groove 3141, and the gradually reduced bell mouth-shaped structure enables the clamping portion 3241 to gradually tighten towards the central axis of the clamping groove after entering the clamping groove 3141, so that the phenomenon that the clamping portion 3241 is broken due to sudden extrusion force when trying not to come out from the upper end of the clamping groove is avoided; while the relatively small upper port allows the underside of the barb 3242 to snap tightly into engagement with the outer top side of the upper port when the snap-in portion 3241 is fully snapped in, allowing axial and radial fixation between the first and second housings 301 and 302 to be achieved in a stable manner.

That is, in this more specific embodiment, when the first housing 301 and the second housing 302 are assembled together, the snap-in portions 3241 on the second corresponding connection side 324 of the second housing 302 will also be received in the snap-in grooves 3141 of the second connection side 314 of the first housing 301. In this way, the mutual engagement between the first protrusion 3132 and the second recess 3232, the first recess 3131 and the second protrusion 3231, and the engaging groove 3141 and the engaging portion 3241 limits the degree of freedom of the first housing 301 and the second housing 302 in all directions with respect to each other, and the stable connection between the two is easily achieved. And when the first shell 301 or the second shell 302 needs to be replaced, the first shell can be conveniently disassembled and reassembled, and the replaceability of the components is greatly improved.

Preferably, the first protrusion 3132 is disposed at a first end of the first connection side 313 adjacent to the second connection side 314, the first recess 3131 is disposed at a second end of the first connection side 313 remote from the second connection side 314, and the locking groove 3141 is disposed at a second end of the second connection side 314 remote from the first connection side 313, and this relatively distributed configuration of the snap connection may ensure a more balanced and stable snap connection in radial and axial directions.

Thus, in such an embodiment, the connection between the first housing 301 and the second housing 302 may be achieved by: fitting the first protrusion 3132 of the first connection side 313 of the first housing 301 into the second recess 3232 of the first corresponding connection side 323 of the second housing 302, as shown in fig. 55-56; inserting the snap-in portion 3241 on the second corresponding connection side 324 of the second housing 302 into the snap-in groove 3141 on the second connection side 314 of the first housing 301, as shown in fig. 57-58; while the first concave portion 3131 of the first coupling side 313 of the first housing 301 receives the second convex portion 3232 of the first corresponding coupling side 323 of the second housing 302. This completes the assembly of the first casing 301 and the second casing 302 in a very convenient manner.

Of course, other snap structures for the snap connection between the first housing and the second housing are possible, and the snap structures may be provided in different numbers in different positions or with different orientations as required, and these possible alternatives are within the scope of the invention.

According to another aspect of the present invention, a dishwasher 2 is also proposed, comprising at least one hydraulic spraying system 1 as described above.

In a particular embodiment, as shown in figure 59, the presence of the hydrojet system 1 in the central portion of the storage rack 3 of the dishwasher 2, as previously described, ensures that the dishes placed on the upper and lower storage racks 4, 5 of the dishwasher are all washed as the hydrojet system 1 is operated.

According to a preferred embodiment, the hydraulic sprinkler system 1 according to the first and second embodiments of the present invention is mounted to the storage rack 3 in the dishwasher 2 by a snap-fit arrangement. The snap-fit of the hydraulic sprinkler system 1 in the dishwasher 2 according to the second embodiment will be described in detail herein, but it should be understood that similar snap-fit means and snap-fit structures may be used for the snap-fit of the hydraulic sprinkler system 1 in the dishwasher according to the first embodiment. The hydraulic spraying system can be stably arranged in the storage rack of the dishwasher without other special tools through the clamping structure, so that the operation is convenient, and the cost is saved; and can be conveniently detached from the storage rack of the dishwasher when the hydraulic spraying system needs to be replaced or maintained or parts replaced.

For example, as shown in fig. 59 and 60, at least one first catch 340 is provided on the top of the second housing 302, and the first catch 340 catches on the lateral suspension member 6 in the dishwasher storage rack to limit upward or downward displacement of the hydraulic sprinkler system 1. In addition, at least one second clamping leg 350 can be arranged on the side surface of the second shell 302, and the second clamping leg 350 is clamped on the longitudinal hanging piece 7 in the storage rack of the dishwasher to limit the forward or backward or leftward or rightward displacement of the hydraulic spraying system 1.

In a more specific embodiment, as shown in fig. 60, the first catch 340 is configured to have two side walls 341, 342 extending upward perpendicular to the transverse suspension member 6, the two side walls 341, 342 are opposite to each other in a direction parallel to the transverse suspension member 6, a recess 343, 344 is provided at the top end of the two side walls 341, 342, a catch column 345, 346 with a top barb is provided between the two side walls 341, 342, and the catch column is configured to allow the transverse suspension member 6 to catch under the top barb when passing through the recess 343, 344. Furthermore, the second catch 350 is configured to extend from a side of the second housing 302 and form a resilient arm 352 at an end 351 of the second catch 350 bent towards the side to form a receiving portion between the end 351 of the second catch 350 and the side of the second housing for catching the longitudinal hanger 7 of the storage rack 3 of the dishwasher 2, as shown in fig. 60.

Preferably, as shown in fig. 59 to 60, at least one first locking leg 340 is respectively provided at both ends of the top of the second housing 302. Also preferably, at least one second catching leg 350 is provided at both ends of the side of the second housing 302, respectively. This makes it possible to achieve a secure clamping of the hydraulic spray system 1 in the dishwasher 2. Of course, the positioning and number of the first and second catches 340, 350 are selected to ensure a secure snap-fit of the hydraulic sprinkler system 1 in the dishwasher 2.

It is also preferred that shower pipes 401, 402 are snap-connected at their free ends 4031, 4041 opposite said corresponding snap-in ends to the storage rack 3 in dishwasher 1. For example, as shown in fig. 59 and 60, the cylindrical portions 413 and 414 of the connecting member 411 for connecting the free ends 4031 and 4041 of the shower pipes are provided with the snap members 415, the end portions of the snap members 415 can be provided with barbs, and the barbs can be snapped on the hanging members of the dishwasher storage rack 3. Of course, other clamping structures may be used to clamp the shower to the storage rack of the dishwasher and are within the scope of the present invention.

In a more specific embodiment, as shown in fig. 60, hydraulic sprinkler system 1 includes two sprinkler tubes 401, 402, a coupler 411 for coupling free ends 4031, 4041 of both sprinkler tubes 401, 402 together, and a catch 415 for engaging a hanger of dishwasher storage rack 3 is provided at a central portion of coupler 411, catch 415 optionally being in the form of a barb. Fig. 61 shows a schematic side view of the hydraulic sprinkler system 1 after it has been snapped into the dishwasher 2 according to an embodiment of the present invention. It can be seen that, according to the utility model discloses a joint connection structure of hydraulic spraying system 1 in dish washer 2 itself size is very little, allows to save the inner space in dish washer 2 greatly to need not set up dedicated mounting structure on the storing frame of dish washer, make on the one hand can obtain compact structure and connect firm dish washer 2, on the other hand makes processing and operation degree of difficulty greatly reduced, has saved the cost.

In this way, the hydraulic sprinkler system is installed in the dishwasher in a simple and easy-to-operate manner. It should be noted that other clamping structures that enable a clamping connection of the hydraulic sprinkler system in the dishwasher are also possible and within the scope of the present invention.

According to the utility model discloses a hydraulic spray system especially ensures through inlet, nozzle and oar wheel's structure, location and relative position orientation etc. can effectively control the loss of liquid ability in the liquid can transmission process to can utilize the liquid ability from the hydraulic source with satisfying efficiency, also greatly improved the cleaning performance and the cleaning efficiency of the dish washer that uses this kind of hydraulic spray system. Furthermore, according to the utility model discloses a hydraulic spraying system has realized the modularization structure, has compressed the quantity of component part to the mode more convenient with simpler structure has realized between each component part and the module and the more firm connection of hydraulic spraying system in the dish washer, has promoted standardized production, has reduced production and assembly cost, and has promoted part interchangeability, makes the part maintain with change more convenient feasible, and product stability is high, life cycle is long in service life. And, through designing hydraulic spray system with open structure, ensure in time to discharge the liquid and the filth that the accident got into hydraulic spray system inside, restrained breeding of bacterium, also protected simultaneously that component parts avoids the influence of liquid or filth, further improved hydraulic spray system and dish washer's reliability and robustness.

The exemplary embodiments of the hydraulic sprinkler system and the dishwasher comprising such a hydraulic sprinkler system have been described in detail above with reference to preferred embodiments, however, it will be understood by those skilled in the art that various modifications and variants can be made to the above-described specific embodiments without departing from the inventive concept, and various combinations of the various technical features and structures proposed by the present invention can be made without departing from the scope of the present invention.

List of reference numerals

Hydraulic spraying system 1

Paddle wheel 100

Vane 101

Center portion 102 of paddle wheel

Centre hole 1021 of paddle wheel

Second flat portion 1012

(first) hook 1013

Vane radial outer end 103

Outer circle 104

Radius R

Radially inner impact end 105

Radially outer impact end 106

Liquid inlet 107

Liquid inlet pipe 108

Rubber member 109

Supporting wall 1091

Acting wall 1092

Lead-in ramp 1093

Angle β

Arrow F10

First injection direction D1

Second injection direction D2

First nozzle 111

Second nozzle 112

Liquid inlet ports 1111, 1121

Liquid outlet port 1112, 1122

Nozzle body 1113, 1123

Direction of extension D3 of the first nozzle body

Direction of extension D4 of the second nozzle body

Angle α

Hydraulic pressure value P

Acting force F

Intersection point Q

Distance L1

Transmission mechanism 20

First drive train 21

A second drive train 22

Input shaft 201

Free end 2011 of input shaft

First flat part 2012

(first) peripheral groove 2013

Input gear 202

Bearing 2012

First duplicate gear 203

Axle 2031

Second duplicate gear 204

Shaft 2041

Third duplicate gear 205

Shaft 2051

Fourth dual gear 206

Shaft 2061

First single gear 207

Shaft (intermediate output shaft) 2071

Free end 2072 of shaft 2071

Third flat parts 2073, 2074

Fastener 2077, 2078

Step 2079

Annular receiving portion 2080

Second single gear 209

Fourth flat parts 2075, 2076

Third single gear 210

Shaft 2101

First output shaft 211

Center hole 2111 of first output shaft

The clip end 2112 of the first output shaft

Jack catch 2113

Second engaging portion (second engaging hook) 2114

Tendon 2115

Flange 2116

Rounded bevel structure 2119

First step portion 2117

The first annular receiving portion 2118

Fourth single gear (first ring set) 212

First output gear 213

Fifth single gear 214

Shaft 2141

Sixth single gear 215

Shaft 2151

Fifth duplicate gear 216

Shaft 2161

Second output gear 217

Second output shaft 218

Second annular receiving portion 2188

Collar (second ring set) 219

Shell 300

First housing 301

First housing body 311

First case cover 312

First connection side 313

First concave part 3131

First protrusion 3132

Second connecting side 314

(first) card slot 3141

Reduced portion 3142

Second housing 302

Second housing body 321

Second housing cover 322

First corresponding connecting side 323

Second convex portion 3231

Second concave portion 3232

Second corresponding connection side 324

(first) clip part 3241

Barb 3242

Input aperture 303

First output hole 311

Second output aperture 318

Intermediate output aperture 306

Middle input aperture 307

Drain hole 308 on the first housing

Drain hole 309 on the second housing

Distance L2

Distance L3

Spraying mechanism 40

First shower pipe 401

Corresponding clamping terminal 4011

Second peripheral groove 4114

Groove 4115

Ramp 4116

Second shower 402

Corresponding card terminal 4021

Spray holes 4017, 4018

Free ends 4031, 4041 of shower pipes

End caps 409, 410

Connecting piece 411

Barrel portions 413, 414 of connector 411

Clip 415

Gasket 403

Shim 404

Gasket 405

Shim 406

Seal 407

Seal 408

Dishwasher 2

Storage rack 3

Upper storage rack 4

Lower storage rack 5

Horizontal hanging piece 6

Longitudinal hanging piece 7

First clip leg 340

Clamping leg side walls 341, 342

Recesses 343, 344 in the side walls

Clip column 345

Second clip 350

End 351

Spring arm 352

Claims (18)

1. A hydraulic spray system, comprising:

a hydrodynamic mechanism comprising:

a paddle wheel comprising a plurality of blades distributed in a circumferential direction,

at least one nozzle in communication with a liquid source for spraying a stream of liquid toward the blades to drive rotation of the paddle wheel,

a transmission mechanism comprising:

a drive member, comprising: an input gear driven for rotation by the paddle wheel through an input shaft; and at least one output shaft connected directly or indirectly with the input gear and for outputting a rotational movement of the paddle wheel,

a housing carrying the transmission member,

a spray mechanism comprising at least one spray pipe driven by the at least one output shaft for rotational movement,

wherein the at least one nozzle is proximate an outer circle defined by the plurality of vanes and a stream of liquid ejected from the at least one nozzle is proximate a radially outer end of the vanes and the direction of the ejection is parallel to a tangent of the outer circle.

2. The hydraulic spray system as recited in claim 1, wherein said hydraulic mechanism includes an inlet port disposed in said housing of said actuator, and said nozzle is also disposed in said housing and is in communication with said inlet port.

3. The hydraulic sprinkler system according to claim 2, wherein said drive member of said drive mechanism is included in a first drive train and a second drive train, said housing respectively comprising:

a first housing carrying transmission members in the first drive train, the first drive train comprising at least the input gear and an intermediate output shaft for transmitting rotary motion outside the first housing, and

a second housing carrying transmission members in the second drive train, the second drive train including at least an intermediate input shaft for transmitting rotary motion from the intermediate output shaft into the second housing and including the at least one output shaft,

wherein the at least one nozzle is disposed in the first housing and the liquid inlet is disposed in the second housing.

4. A hydraulic sprinkler system in accordance with claim 3, wherein said first housing is mounted gravitationally above said second housing.

5. A hydraulic sprinkler system in accordance with claim 3, wherein said first housing is mounted gravitationally below said second housing.

6. A hydraulic spray system as recited in any one of claims 1 to 5 wherein said spray nozzle comprises an inlet port and an outlet port, and wherein said outlet port is smaller in size than said inlet port.

7. The hydraulic spray system as recited in claim 6, wherein the at least one spray nozzle is further configured to include a nozzle body, and the at least one spray nozzle is further configured such that a spray direction of fluid sprayed from the outlet port can be at any angle to an extension direction of the nozzle body.

8. A hydraulic spray system as claimed in any one of claims 1 to 5, wherein said at least one nozzle is arranged such that the point of intersection of the stream of liquid emitted from said at least one nozzle with said vane is located in the middle of said vane in the axial direction.

9. The hydraulic sprinkler system according to any one of claims 1-5, wherein the outer circle radius is R, and a point where a line passing through the paddle wheel center and perpendicular to the ejection direction intersects the ejection direction line is a distance L1 from the outlet port of the nozzle, wherein a value of L1 satisfies 0.775R < L1< 0.825R.

10. A hydraulic sprinkler system according to any one of claims 1-5, including first and second nozzles driving the vanes in the same circumferential direction, wherein the direction of extension of the first nozzle body of the first nozzle and the direction of extension of the second nozzle body of the second nozzle can be arranged parallel, perpendicular or inclined to each other.

11. A hydraulic spray system as recited in claim 10, wherein the spray direction of said first nozzle is perpendicular to the spray direction of said second nozzle.

12. A hydraulic spray system as recited in claim 11, wherein said first nozzles spray in a horizontal direction and said second nozzles spray in a vertical direction.

13. A hydraulic spray system as recited in claim 10, wherein the spray direction of said first nozzle is parallel and opposite to the spray direction of said second nozzle.

14. A hydraulic spray system as recited in claim 13, wherein the spray directions of said first and second nozzles are horizontal.

15. A hydraulic spray system as recited in claim 13, wherein the direction of the spray from said first and second nozzles is vertical.

16. A hydraulic spray system as claimed in any one of claims 1 to 5, wherein the vanes are in the form of curved surfaces and liquid from the nozzles is sprayed onto the concave surfaces of the vanes.

17. A hydraulic spray system as claimed in any one of claims 2 to 5, wherein liquid entering the liquid inlet is partly directed into the at least one spray pipe of the spray means via a first branch and partly directed into the spray nozzles via a second branch.

18. A dishwasher, comprising a hydraulic sprinkler system according to any one of claims 1 to 17.

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