CN203701658U - Pool enabling current generation - Google Patents

Abstract

The utility model discloses a pool enabling current generation. The pool is divided by a separator plate into an upper layer and a lower layer. A backflow channel is formed by the lower layer along the length of the pool, and a use zone is formed by the upper layer. Two sides of the pool are equipped with a current diversion cover that is communicated with the upper layer and the lower layer. A water wheel driven by a motor is arranged inside the current diversion cover, and includes a roller body and a plurality of blade sets. The roller body is arranged along the width of the pool to penetrate the whole pool, and the blade sets are distributed on the peripheral surface of the roller body. Preferably, the inner wall of the current diversion cover, parallel to the blade sets, is in clearance fit with blades of the blade sets, and the axial center of the roller body and the separator plate are on the same plane. The pool is low in power consumption, does not need a high-speed propeller to push water currents, and generate noise that people may not hear. Even and steady water currents can be produced along both the depth and the width of the pool, and the flowing speed is adjustable. The pool can be used for various devices for current generation experiments, and especially helps to improve accuracy of swimming skill research and improve safety and comfort of recovery and treatment.

Description

A kind of pond that can make stream

Technical field

The utility model relates to a kind of pond that can make stream, belongs to sports technology and medical rehabilitation devices field.

Background technology

Swimming is that one is subject to popular motion deeply, and exercise swimming be unable to do without swimming pool.In order to improve sportsman's swimming technique, there is making the training pool of stream, automatic swimming machine as disclosed in patent CN100464809C be exactly so a kind of pond.In this swimming pool, swimmer advances with respect to flow reversal, has increased swimming resistance, and by regulating water velocity, swimmer can realize fixed point swimming, has reduced the floor space of swimming pool; Due to the motion of swimmer original place, this pond also can be used for researching and analysing swimming technique; More pleasurable, because water velocity size is adjustable, this pond also can be used for rehabilitation and muscular training.At present, this pond that can make stream has become one of the new lover of high-end swimming pool market and high-grade health-care physical therapy industry and prior development direction gradually.

The key problem in technology point in this pond that can make stream is how to produce current.

In prior art, swimming pool mainly feeds the mouth of a river by adjustable water pump and supplies water to produce current, produces current such as the automatic swimming machine described in patent CN100464809C, reversed flow swim training machine described in patent CN201120112Y adopt this or similar mode.But, this current implementation is only applicable to small-sized swimming pool and small-sized modality, and is not suitable for large-scale swimming pool or large-scale modality; Because current large capacity water pump also only can be realized 100m ³the water supply flow of about/h, and take standard or large-scale swimming pool as example, produces that the required water supply flow of current is the highest must reach 6000 ~ 7000m ³/ h, producing current by water pump will closely to a hundred water pump standard-sized sheet, consumes enormous motivation, and unrealistic.

The another kind of mode that produces current is to drive screw by motor, drive water flow by screw, adopting and producing in this way current for the swimming pool of swimming continuously as described in circular flow type multipurpose swimming pool device as disclosed in patent CN2533203Y, U.S. Pat 5207709A and BP GB2456763A.But this current producing method is applicable to small-sized swimming pool and small-sized modality equally, because for small-sized swimming pool and small-sized modality, screw only needs low speed rotation, noise can be ignored or bear for people's ear, but for large-scale swimming pool and large-scale modality, adopt and require in this way screw High Rotation Speed, and the huge noise that screw High Rotation Speed be can not ignore generation people ear, form noise source under water, person uses to be unfavorable for swimming pool.

Except the producing method of current, also to consider whether can obtain the current of uniform and stable, this is the application in fields such as swimming technique research and rehabilitations for this pond of exploitation, seems particularly important, because this affects research precision and treatment safety and comfort.For two kinds of described before current producing methods, even if ignoring power source is difficult to the shortcoming of coupling and adopts multiple water pumps to be used in conjunction, or ignore and cause the shortcoming of noise and adopt the each screw that drives of multiple electric motors, yet can have the inhomogeneous shortcoming stably of current of generation.

Such as the swimming pool structure of patent CN2533203Y is: in the housing of level bilayer, centre is a swimming pool, both sides are reflux passage, are grid rectifier and screw in the interlayer outside the front end of swimming pool, outer for dragging the speed governing power set of screw up front; Outside swimming pool both sides, be rectangular tube reflux passage, at grid rectifier water inlet, screw is equipped with at place, and entrance is circular, exports as the thin lattice of rectangle; Below grid rectifier, there is a swash plate below that connects rectangular tube reflux passage; The water of circulation is all arc through corner; Be crin web plate in swimming pool rear end.If the swimming pool of large width adopts this similar structures, need in the interlayer outside the front end of swimming pool, multiple grid rectifiers and corresponding screw be set, cause between grid rectifier or the not uniform and stable of current of gushing out between screw.

Although the swimming pool structure of patent US5207729A is different with the swimming pool structure of patent CN2533203Y, it comprises a pond; One water circulation passage is positioned at water tank bottom, and one end communicates with inside, pond along extending water tank upper formation current delivery port, and the other end of water stream channel is that current pump orifice communicates with inside, pond; One is positioned at the current control element of current delivery port; One supply unit, comprises by motor-driven propeller blade, and propeller blade is set in the face of delivery port; But based on above-mentioned same reason, also keep away the unavoidable inhomogeneous defect stably of current from gushing out between screw.

Swimming pool structure in the swimming pool structure of patent GB2456763A and patent CN2533203Y is similar, the length direction that its current the are parallel to swimming pool swimming pool of flowing through, from flow inlet to outlet, promoted to be back to entrance through peripheral channel by one or more propeller blades again, the electric consumption of propeller blade is no more than 2kW, in preferred technical scheme, peripheral channel comprises the seal channel that is positioned at swimming pool both sides, and each seal channel is respectively provided with a propeller blade.This swimming pool structure is also kept away the inhomogeneous problem stably of unavoidable current.This be because: if flow inlet is offered widely, the current at entrance two ends place can be greater than the current at entrance center place, and this gap increases along with the increase of flow inlet width, and then cause current inhomogeneous steadily; If flow inlet is offered narrowly, on swimming pool width, the current away from flow inlet place will be much smaller than the flow velocity at flow inlet place, also causes current inhomogeneous steadily.

Utility model content

The purpose of this utility model is to overcome the defect existing in prior art, and the pond that a kind of structural dynamic consumption is little, noise is low, can produce uniform and stable current is provided.

For achieving the above object, the technical solution of the utility model is a kind of pond that can make stream of design, this pond is respectively levels by dividing plate, lower floor forms reflux passage along the length direction in pond, and upper strata forms and uses district, and both sides, pond are provided with the kuppe that is communicated with upper and lower layer, in kuppe, be provided with by motor-driven water wheel, water wheel comprises roll body and some vane group, and roll body is along the width setting in pond and run through whole pond, and vane group spreads over roll body side face.The big or small kind in pond is not limit, and its title is not limited to pond body, can also be cell body, container etc.

The principle that stream is made in this pond is: under the driving effect of motor, roll body rotates the rotation of impeller group, promote the radial motion of current along water wheel, suction upper strata or lower layer of water is also delivered to another layer, because the roll body of water wheel is along the width setting in pond and run through whole pond, add that vane group spreads over roll body side face, therefore can be at the whole width in pond to the uniform tractive force of water generates, thus produce uniform and stable current.In addition, by regulating output power of motor to control the rotating speed of water wheel, and then the flow rate of water flow on upper strata, adjustable pond.Because water wheel aspirates and carries outlet capacity much larger than screw or water pump, thereby power consumption and noise are reduced.

Preferably, in the kuppe that is provided with described water wheel, kuppe be matched in clearance with the inwall at the equal place of described vane group and the blade of described vane group.The water on upper strata, pond all can participate in water circulation like this, makes upper strata, pond current more even along its depth direction.

In order to improve dynamic efficiency, preferably, described roll body Zhou center and described dividing plate are in same level.Like this, the half that water wheel is positioned at dividing plate top just forms suction district, is positioned at the half formation delivery area of interlayer below, or the half that is positioned at dividing plate below just forms suction district, is positioned at the half formation delivery area of interlayer top, and water wheel rotation can reach current pumping efficiency and the transfer efficiency of coupling the most.

In order to improve dynamic efficiency, preferably, the blade of each described vane group is radioactivity structure centered by described roll body.Current can be aspirated and carry to each like this vane group effectively.The shape of each blade can be plate shaped, can be also other shapes such as spoonful shape.Wherein plate shaped blade is convenient to manufacture, and spoon shape blade is conducive to suction and carries current.

The number of water wheel blade group is at least one group, each vane group can by sheathed, be anchored or other modes be fixed on roll body.Arrange in the situation of multiple blades, each vane group close-packed arrays, the pond that occupies whole pond is wide.For easily manufactured, preferably, described water wheel can only comprise a vane group, and the blade of this vane group extends near pond inwall along the width in pond.

As the distortion of blade, between described blade, can be provided with some reinforcing ribs.Reinforcing rib can reinforced blade intensity, special in the situation that water wheel only arranges a vane group, reinforcing rib is set even more important.In this case, required length of blade is large, and reinforcing rib can be protected blade, avoid water wheel rotating speed too high and make blade damage.The structure of preferred described reinforcing rib is: described reinforcing rib connects described blade and is surrounded on described roll body, and the height of reinforcing rib is less than blade height.The reinforcing rib of this spline structure can effectively transmit stressed between each blade, plays the effect of protection blade.Preferably, in a vane group, lobe numbers is 3 ~ 10.

For uniform distribution current more, the current that simultaneously block upper strata, pond are derived, introducing port to be to increase safety, and preferably, the current on upper strata, described pond import, export mouth is respectively equipped with the flow distribution plate that spreads all over pod apertures.Here pod apertures is done wide in range explanation, except being other shapes such as conventional circular, all right rhombus, rectangle.Such as flow distribution plate can be the flase floor of stainless steel or the web plate of stainless steel wire braiding.But it is circular that pod apertures is preferably, be cellular or near cellular being arranged on described flow distribution plate, mechanical structure is more stable like this.

Because the water on top, upper strata, pond is away from the water wheel blade of rotation, therefore flow velocity is also less compared with bottom, pond, upper strata; In addition, bottom, pond, upper strata decreases the closer to bottom surface flow velocity, and especially upper strata Chi Dimianchu is current dead angle; In order to obtain the current of uniform and stable, preferably, the pod apertures of described flow distribution plate top and bottom is gross porosity, and the pod apertures at middle part is pore.The gross porosity of top and bottom can increase the flow rate of water flow of top, pond, upper strata and bottom.

As the distortion of pod apertures, can also above described pod apertures, set up the drainage cap of evagination.Drainage cap can reduce current to deriving, the impact of ingress pipe, when current flow out through pod apertures, owing to being subject to the stopping of drainage cap of evagination, can reduce impact, and change current deflecting, improve current deflecting efficiency; When current flow into through pod apertures, due to the guide functions of the drainage cap of evagination, also contribute to improve current deflecting efficiency.

Kuppe enters lower floor, lower floor and enters the vitals on upper strata from upper strata, pond as guiding water, in order to improve current suction and transfer efficiency, to avoid dead angle, preferably, kuppe inwall comprises two upper and lower two circular arcs along the cross section of pond length direction, the radius of upper circular arc is greater than the radius of lower circular arc, and lower circular arc bottom seamlessly transits with the bottom surface of described pond lower floor.For effective transmission current, further preferably, described lower circular arc bottom is designed to the underrun one horizontal plane transition with described pond lower floor.

If standard pool size is built up in this pond, required drive also only must 5kW left and right, for simplified structure, preferably, can only in the described kuppe of this pond one side, described water wheel be set; In the described kuppe of this pond opposite side, extend and be provided with arc deflector to described flow distribution plate bottom from described dividing plate.In this case, described water wheel is preferably the water wheel that aspirates pond upper water and be delivered to pond lower floor.Like this, the water on upper strata, pond aspirates and is delivered to pond lower floor by water wheel through flow distribution plate, through flowing out again after reflux passage, arc deflector and another flow distribution plate, than water from flow distribution plate, arc deflector and reflux passage, to be delivered to upper strata by water wheel suction more even through another flow distribution plate outflow again.

Compared with prior art, the utility model can be made the pond of stream advantage and beneficial effect are:

The first, power consumption is little, and the pond of standard pool size only needs the power of 5kW.

The second, advance current without high performance airscrew, the substitute is by motor-driven water wheel, noise behaviour ear is imperceptible, improves comfort.

Three, all produce the current of uniform and stable at the degree of depth in pond and width;

Four, the adjustable easy control of the current in pond use district, and after speed governing, can realize rapidly the current of uniform and stable;

Five, be conducive to improve precision and the rehabilitation safety and comfort of swimming technique research.

This pond can be used as swimming instruction, research swimming technique, can also be used as rehabilitation equipment, and other variously need to make the equipment that stream is done experiment.

Accompanying drawing explanation

Fig. 1 is that the utility model can be made the pond of stream along the cross section structure schematic diagram of the length direction in pond;

Fig. 2 is the structural representation of the water wheel in Fig. 1;

Fig. 3 is the structural representation of another kind of kuppe;

Fig. 4 is the cross-sectional view of Fig. 1 along I-I;

Fig. 5 is the another kind of structural representation of water wheel;

Fig. 6 is that the utility model can be made the pond of stream along the another kind of cross section structure schematic diagram of the length direction in pond.

In figure: 1, use district; 2, reflux passage; 3, dividing plate; 4 and 4 ', first, second kuppe; 5, water wheel; 6, roll body; 7 and 7 ', vane group; 9 and 9 ', flow distribution plate; 10, arc deflector; 11 and 12, the current on upper strata derivation, introducing port; 21 and 22, the current of lower floor derivation, introducing port; 40, kuppe inwall; 71 and 71 ', blade; 72, reinforcing rib; 90, pod apertures; 91, drainage cap.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.

As shown in Figure 1 and Figure 4, the utility model is a kind of pond that can make stream, and this pond is respectively the levels in pond by dividing plate 3.Lower floor forms reflux passage 2 along the length direction in pond, and upper strata forms and uses district 1, for user, as swimming, physiotherapy.Both sides, pond are provided with the first kuppe 4 and the second kuppe 4 ' that are communicated with upper and lower layer, wherein the first kuppe 4 is communicated with the current export mouth 11 on upper strata and the current introducing port of lower floor 22, the second kuppes 4 ' the connection current export mouth 21 of lower floor and the current introducing ports 12 on upper strata.

The interior water wheel 5 that arranges of the first kuppe 4, water wheel is driven by motor.Water wheel 5 comprises roll body 6 and some vane group 7, and roll body 6 is along the width setting in pond and run through whole pond, and vane group 7 spreads over roll body 6 side faces.The central axis of roll body 6 is connected with the output shaft of motor by shaft coupling.In order to reach current pumping efficiency and the transfer efficiency of coupling the most, roll body 6 Zhou centers and dividing plate 1 are in same level.

For easily manufactured, water wheel 5 only comprises a vane group 7, as shown in Figure 2, in a vane group, is made up of 6 blades 71, and blade 71 is radioactivity structure centered by roll body 6, and blade 71 extends near pond inwall along the width in pond.Between blade 71, be provided with some reinforcing ribs 72 with protection blade, reinforcing rib 72 connects blade 71 and is surrounded on roll body 6, and the height of reinforcing rib 72 is less than blade 71 height.

Enter lower floor, lower floor from upper strata, pond and enter the vitals on upper strata as guiding water, first, second kuppe 4 and 4 ', as shown in Figure 1, its inwall 40 comprises two upper and lower two circular arcs along the cross section of pond length direction, the radius of upper circular arc is greater than the radius of lower circular arc, lower circular arc bottom seamlessly transits with the bottom surface of pond lower floor, to avoid producing current dead angle, to improve current suction and transfer efficiency.Be that the cavity type of first, second kuppe 4 and 4 ' is seemingly vertically to half Pear-Shaped dividing.In order effectively to transmit current, lower circular arc bottom is designed to the underrun one horizontal plane transition with pond lower floor.Here, the first kuppe 4 and inwalls 40 vane group 7 equal places, descend circular arc, with the blade 71 of vane group 7 be matched in clearance, the water in such the first kuppe 4 inner chambers all can participate in water circulation, makes the current on upper strata, pond more even at its depth direction.Certainly, except the kuppe shape shown in Fig. 1, first, second kuppe 4 and 4 ' can also be other structures, ratio as shown in Figure 3, first, second kuppe 4 and 4 ' inwall 40 comprise a circular arc along the cross section of pond length direction, this circular arc and blade 71 are matched in clearance, and the bottom design of circular arc is and the underrun one horizontal plane transition of pond lower floor, the top of circular arc and pond upper sides be by a tapered plane transition, and first, second kuppe 4 and 4 ' cavity type are like half pyriform.

For uniform distribution current more, the current that simultaneously block upper strata, pond are derived, introducing port 11,12 to be to increase safety, and the current on upper strata, pond import, export mouth 11,12 is respectively equipped with the flow distribution plate 9 and 9 ' that spreads all over pod apertures 90.Pod apertures 90 is circular, is nearly cellular being arranged on flow distribution plate 9 and 9 '; And the top of flow distribution plate 9 and 9 ' and the pod apertures of bottom 90 are gross porosity, the pod apertures 90 at middle part is pore, as shown in Figure 4.The gross porosity of top and bottom can increase the flow rate of water flow of top, pond, upper strata and bottom.Certainly, pod apertures 90 can also be other shapes such as rhombus, rectangle, such as flow distribution plate can be the flase floor of stainless steel or the web plate of stainless steel wire braiding, with rectangle or rhombus pod apertures.

In above-mentioned embodiment, water wheel 5 rotation suction pond upper waters are also delivered to pond lower floor.As distortion, can be also that water wheel rotation is aspirated lower layer of water and is delivered to upper strata, pond.But.Rear a kind of mode more easily causes current inhomogeneous steadily; In front a kind of mode, water is aspirated and returns through reflux passage 2 the current introducing port 12 on upper strata by water wheel 5 through the current export mouth 11 on upper strata, and in reflux passage, current can to a certain degree obtain homogenising.This homogenising is further strengthened by arc deflector 10 is set in the second kuppe 4 '.As shown in Figure 1, in the second kuppe 4 ', extend arc deflector 10 is set to flow distribution plate 9 ' bottom from dividing plate 1.Arc deflector 10 plays the effect that lower layer of water is effectively transferred to upper strata.

As the distortion of water wheel 5, water wheel also can arrange many group vane group 7 ', as shown in Figure 5 and Figure 6, the blade 71 ' of each vane group 7 ' is fixed on roll body 6 by direct anchor, or using conventional rotary blade as a vane group, multiple rotary blades are directly sheathed and be fixed on roll body, each rotary blade close-packed arrays, the pond that occupies whole pond along roll body 6 is wide.Here, blade 71 and 71 ' shape can be plate shaped for what be easy to manufacture, as Fig. 2, can be also the spoon shapes that is conducive to suction and carries current, as illustrated in Figures 5 and 6.Certainly also can be other shapes.Here do not do one by one and itemize.

As the distortion of the pod apertures 90 on flow distribution plate 9 and 9 ', can also above pod apertures 90, set up the drainage cap 91 of evagination, as shown in Figure 6.Drainage cap can reduce current to deriving, the impact of ingress pipe, when current flow out through pod apertures, owing to being subject to the stopping of drainage cap 91 of evagination, can reduce impact, and change current deflecting, improve current deflecting efficiency; When current flow into through pod apertures 91, due to the guide functions of the drainage cap 91 of evagination, also contribute to improve current deflecting efficiency.

As distortion, can also in first, second kuppe 4 and 4 ', water wheel be respectively set, water wheel suction pond upper water in the first kuppe 4 is also delivered to pond lower floor, water wheel suction pond lower layer of water in the second kuppe 4 ' is also delivered to upper strata, pond, two water wheel co-operation produce current in the same way on upper strata, pond, to improve the highest adjustable flow velocity in pond.But for the pond of standard pool size, required drive also only must 5kW left and right, the first kuppe 4 interior water wheel 5 is set or water wheel is set in the second kuppe 4 ' be also enough to meet general power demand, and structure is more simplified.

From saving the angle of space and power, first, second kuppe 4,4 ' inwall bottom surface are preferably designed as equal with the bottom surface of pond lower floor, as Fig. 1; The roll body 6 Zhou centers of water wheel 5 are suitable with the degree of depth of pond lower floor to the distance of blade 71 ends.Lower layer of water can all participate in circulation like this.

While using this pond, the horizontal plane on upper strata, pond is no more than the pod apertures of highest point on flow distribution plate.The basic functional principle of Chi Zaoliu is as follows:

1, under the driving effect of motor, the roll body 6 of water wheel 5 rotates impeller 71 and rotates, and along water wheel 5 radially, suction is used the water in district 1 in flow distribution plate enters the first kuppe 4;

2, the roll body 6 of water wheel 5 continues rotation, makes the water entering in the first kuppe 4 be delivered to lower floor by blade 71, enters reflux passage 2;

3, the water that enters reflux passage 2 enters the second kuppe 4 ' by reflux passage 2 under the huge thrust of the follow-up water that is aspirated and be delivered to again reflux passage 2 by water wheel;

4, the water that enters the second kuppe 4 ' flow distribution plate from the current introducing port 12 on upper strata, pond under the follow-up huge thrust that is transported to again the water in the second kuppe 4 ' flows out;

5, because the current export mouth 11 on upper strata, pond is aspirated by water wheel, the current introducing port 12 on upper strata, pond has again follow-up water to be transported to herein, forms positive differential pressure, thereby produced current at the length direction on upper strata, pond between current importing, export mouth 12,11.

This design feature that can make the pond of stream is:

Because the roll body 6 of water wheel 5 is along the width setting in pond and run through whole pond, add that vane group 7 spreads over roll body 6 side faces, therefore can, at the whole width in pond to the uniform thrust of water generates, produce uniform and stable current along the width in pond.On the depth direction in pond, because the horizontal plane on upper strata, pond is no more than the pod apertures of highest point on flow distribution plate, add the unique design of the pod apertures of the distinctive design feature of first, second kuppe inner chamber and flow distribution plate, make Chi Shangxiacengshui all can participate in water circulation, and produce uniform and stable current along the depth direction in pond.

This pond water wheel used that can make stream, its suction and conveying outlet capacity are much larger than screw or water pump, and required power consumption is little; Required water wheel rotating speed is also low, and the noise behaviour ear of generation is accepted.Can realize by the rotating speed that regulates waterwheel opinion the adjusting that upper strata, pond is used to district's current.

The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (10)

1. can make the pond of stream for one kind, it is characterized in that, this pond is respectively levels by dividing plate, lower floor forms reflux passage along the length direction in pond, and upper strata forms and uses district, and both sides, pond are provided with the kuppe that is communicated with upper and lower layer, in kuppe, be provided with by motor-driven water wheel, water wheel comprises roll body and some vane group, and roll body is along the width setting in pond and run through whole pond, and vane group spreads over roll body side face.

2. the pond that can make stream as claimed in claim 1, is characterized in that, in the kuppe that is provided with described water wheel, kuppe be matched in clearance with the inwall at the equal place of described vane group and the blade of described vane group.

3. the pond that can make stream as claimed in claim 2, is characterized in that, described roll body Zhou center and described dividing plate are in same level.

4. the pond that can make stream as claimed in claim 3, is characterized in that, the blade of each described vane group is radioactivity structure centered by described roll body.

5. the pond that can make stream as claimed in claim 4, is characterized in that, described water wheel only comprises a vane group, and the blade of this vane group extends near pond inwall along the width in pond.

6. the pond that can make stream as claimed in claim 5, is characterized in that, is provided with some reinforcing ribs between described blade, and described reinforcing rib connects each described blade and be surrounded on described roll body and form annular, and the height of reinforcing rib is less than blade height; Described lobe numbers is 3 ~ 10.

7. the pond that can make stream as described in claim 1 to 6 any one, is characterized in that, the current on upper strata, described pond import, export mouth is respectively equipped with the flow distribution plate that spreads all over pod apertures.

8. the pond that can make stream as claimed in claim 7, is characterized in that, the pod apertures of described flow distribution plate top and bottom is gross porosity, and the pod apertures at middle part is pore; The drainage cap of evagination is set up in the top of described pod apertures.

9. the pond that can make stream as claimed in claim 7, it is characterized in that, described kuppe inwall comprises two upper and lower two circular arcs along the cross section of pond length direction, the radius of upper circular arc is greater than the radius of lower circular arc, and lower circular arc bottom seamlessly transits with the bottom surface of described pond lower floor.

10. the pond that can make stream as claimed in claim 9, is characterized in that, only in the described kuppe of this pond one side, described water wheel is set; In the described kuppe of this pond opposite side, extend and be provided with arc deflector to described flow distribution plate bottom from described dividing plate.