Invention content
It is an object of the invention to：For the drawbacks described above of the prior art, a kind of liquid stream check valve is provided, it is simple in structure,Service life is long.Present invention simultaneously provides a kind of water toothpicks, and using the liquid stream check valve, feed liquor and drain are smooth, while also carryingHigh service life.
In order to achieve the above-mentioned object of the invention, the present invention provides a kind of liquid stream check valves, are arranged in liquid stream outlet/inletPlace, the liquid stream check valve include：
Casing, both ends are respectively liquid feeding end and outlet end；
Sealing, is arranged the outer wall in described sleeve pipe liquid feeding end, and outwardly convex forms a circle boss；
Duck bill is arranged in described sleeve pipe, by being restrained towards duckbilled top along described sleeve pipe from described sleeve pipe inner wallA pair of angled face of inner wall setting forms duckbill, and the slit of the discharge liquid stream side on the duckbilled top is located at described sleeve pipeOutlet end, when the liquid feeding end is in negative pressure, the slit of the duck bill is closed to prevent liquid stream from passing through.
Further, reinforcing rib is set in described sleeve pipe outer wall.
Further, the reinforcing rib is axially arranged on the outer wall of described sleeve pipe, and the quantity of the reinforcing rib is no less than 2It is a.
Further, the angle of inclination of the inclined surface is 55 °~65 °.
Further, the liquid stream check valve is the integrated molding part of flexible material.
The present invention additionally provides a kind of water toothpick, including water tank, water inlet pipe, pump, nozzle and driving mechanism, the water tank withThe water inlet pipe connection, the water inlet pipe are connect with pump and nozzle by threeway head, the threeway head and water inlet pipe and/or nozzleJunction be arranged check valve, the check valve be claim 1-4 any one of them liquid stream check valves, the driving mechanismIt is connected with the pump and drives the pumping water to enter the water inlet pipe and the pump is driven to spray water out the nozzle.
Further, the sealing of the liquid stream check valve is pressed on institute with water outlet end cap interference fit, the sealingThe bottom of water outlet end cap is stated, the water outlet end cap is tightly connected with the threeway head.
Further, sealing ring is set between the water outlet end cap and the threeway head.
Further, the driving mechanism includes motor, driving gear, driven gear and connecting rod, the axis of the motor withDriving gear is connected and is rotated coaxially, and the driving gear is engaged with the driven gear, the driven gear by connecting rod withThe pump connects and drives the reciprocating motion of the pistons of the pump.
Further, the driven gear is eccentric gear, and one end of the connecting rod is socketed on the eccentric gear, instituteState the piston hinge of the other end and the pump of connecting rod.
Further, piston packing is arranged in the piston nose of the pump.
Compared with prior art, the present invention has the following advantages：The check valve of the present invention adds a snare in duck bill peripheryPipe, substantially improves the reliability of check valve sealing, and improves the intensity of check valve simultaneously, increases the pressure that check valve is born, and preventsOnly check valve deformation failure under buffer brake is also prevented from duck bill water outlet gap tearing, extends its service life, furtherProvided with reinforcing rib, to enhance the intensity of entire liquid stream check valve；Tooth flusher provided by the invention, using the liquid stream check valve,Feed liquor and drain are smooth, and waterproof effect is good, and the service life is longer for component.
Description of the drawings
With reference to the accompanying drawings and detailed description, the present invention is described in detail, wherein：
Fig. 1 is the structural schematic diagram of liquid stream check valve；
Fig. 2 is the longitudinal sectional drawing of liquid stream check valve；
Fig. 3 is water toothpick vertical view；
Fig. 4 is the F-F section partial views of Fig. 3；
Fig. 5 is the B-B cross section views of Fig. 3.
Wherein, liquid stream check valve 100：Casing 10, liquid feeding end 11, outlet end 12, sealing 20, duck bill 30, first inclinesInclined-plane 31, the second inclined surface 32, gap 33, reinforcing rib 40；
Water tank 200, water inlet pipe 300, pump 400：Piston 41, piston packing 42, nozzle 500, driving mechanism 600：Motor61, driving gear 62, driven gear 63, connecting rod 64, water outlet end cap 700, threeway head 800.
Specific implementation mode
In order to make goal of the invention, technical solution and its technique effect of the present invention be more clear, below in conjunction with attached drawing and toolBody embodiment, the present invention is described in more detail.It should be understood that specific implementation mode described in this specification is onlyMerely to explaining the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly anotherOn one element or it is connected on another element.When an element is known as " being connected to " another element, it canTo be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation based on ... shown in the drawings or position are closedSystem, is merely for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must haveSpecific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importanceOr implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed orImplicitly include one or more this feature.In the description of the present invention, the meaning of " plurality " is two or more,Unless otherwise specifically defined.
As shown in Figs. 1-2, a kind of liquid stream check valve, the liquid stream check valve include：Casing, both ends be respectively liquid feeding end andOutlet end；The outer wall in described sleeve pipe liquid feeding end is arranged in sealing, and outwardly convex forms a circle boss, and sealing is for installingThe liquid stream check valve plays the role of sealing simultaneously, to prevent leak-stopping water；Duck bill is arranged in described sleeve pipe, by from the setInside pipe wall rises towards the convergence of duckbilled top and forms duckbill along a pair of angled face that described sleeve pipe inner wall is arranged, this is to inclined surface pointIt collapses and leans in the top of the first inclined surface and the second inclined surface that Wei not be as shown in figs. 1-2, the first inclined surface and the second inclined surfaceNearby there are a gaps, which can be used as fluid outlet, while can prevent the mode of liquid stream adverse current from closing, and first inclinesThe periphery of inclined-plane and the second inclined surface in addition to top is connect with sleeve lining, the slit of the discharge liquid stream side on the duckbilled topPositioned at the outlet end of described sleeve pipe, the liquid feeding end of described sleeve pipe is the inflow that the liquid stream flows into the duck bill other sideMouthful.
The liquid stream check valve of this implementation is arranged at liquid stream inlets or outlets, and sealing docks close with liquid stream import/exportEnvelope, in internal no pressure, duckbill outlet closes up under elastic reaction itself, described when liquid feeding end applies negative pressureThe slit of duck bill be further closed tightlier to prevent liquid stream from passing through, the slit of the duck bill have liquid stream need by when,The slit struts under flow stream pressure effect allows fluid to pass through, or applies positive pressure in liquid feeding end, accelerates fluid from duck billGap in pass through.
In order to further enhance the intensity of entire liquid stream check valve, reinforcing rib is set in described sleeve pipe outer wall, it is described to addStrengthening tendons are axially arranged on the outer wall of described sleeve pipe, and the quantity of the reinforcing rib is no less than 2, is preferably used in the present embodiment4 reinforcing ribs, are symmetrical arranged two-by-two so that support is more uniformly stressed.
It should be noted that the set-up mode of reinforcing rib, can be a variety of, as long as playing increase intensity to sleeve outer wallEffect all can, be not limited to the above embodiments it is middle by the way of, can also be around telescoping screw formula setting etc. modes.
In the present embodiment, the angle of inclination of the inclined surface is 55 °~65 °, i.e. the first inclined surface and the second inclined surface pointAcute angle not between the plane at the radial place of casing is 55 °~65 °.
In the present embodiment, the liquid stream check valve is the integrated molding part of flexible material, specifically, can be synthetic rubberEtc. flexible glue materials.
Liquid stream check valve in the present embodiment can be used in water toothpick, and the concrete structure of water toothpick is provided below：
As in Figure 3-5, a kind of water toothpick includes water tank, water inlet pipe, pump, nozzle and the driving machine of setting in the housingStructure, while further including circuit system, the power supply that electric power is provided for driving mechanism is included at least in circuit system, which can beCan charge-discharge battery and relevant charging circuit and socket, as shown in figure 4, the water tank is connect with the water inlet pipe, it is described intoWater pipe is connect with pump and nozzle by threeway head, and check valve, institute is arranged with the junction of water inlet pipe and/or nozzle in the threeway headThe liquid stream check valve that check valve is the present invention is stated, the check (non-return) valve of other forms can also be set, in the present embodiment, in nozzle and threeThe junction of logical head uses the liquid stream check valve of above-described embodiment, the driving mechanism to be connected with the pump and drive the pumpingWater enters the water inlet pipe and the pump is driven to spray water out the nozzle.
As illustrated in figures 4-5, the sealing of the liquid stream check valve is pressed on water outlet end cap interference fit, the sealingThe bottom of the water outlet end cap, the water outlet end cap are tightly connected with the threeway head, and water outlet end cap and threeway head can be spiral shellThe sealing of its bottom is pressed on the port of threeway head by the connection types such as line connection, water outlet end cap, so that junction sealing is notLeak.
In order to further ensure sealing effect, sealing ring is set between the water outlet end cap and the threeway head, is somebody's turn to doSealing ring is O-ring seal.
In the present embodiment, as shown in figure 5, the driving mechanism includes motor, driving gear, driven gear and connecting rod, instituteThe axis for stating motor connect and rotates coaxially with driving gear, and the driving gear is engaged with the driven gear, the driven toothWheel connects and drives the reciprocating motion of the pistons of the pump by connecting rod and the pump, to make pump internal volume change, when piston toWhen outer movement, pump internal volume changes, and pressure becomes smaller, and water feeding one-way valve is opened, and is discharged closed check valve, water is passed through intake end coverInto pump；When piston inwardly moves, pump internal volume becomes smaller, and pressure increases, and water feeding one-way valve is closed, and goes out water one-way valve opening,Water sprays from water outlet end cap and nozzle.
The connection type of driven gear and connecting rod is a variety of, and in the present embodiment, driven gear is eccentric tooth as illustrated in figures 4-5Wheel, one end of the connecting rod are socketed on the eccentric gear, the piston hinge of the other end of the connecting rod and the pump, motorIn the case of battery powered, driven gear movement, the driving of connecting rod eccentric wheel on driven gear are driven by driving gearUnder, band piston moves reciprocatingly in pump.
In order to ensure the piston seal of pump, the piston nose of the pump is arranged piston packing, piston packing withPiston moves back and forth in the inner wall of pump, and the inner wall of pump is made of the material for being resistant to certain pressure intensity, can be specifically goldBelong to wall.
The check valve of the present invention adds a snare pipe in duck bill periphery, substantially improves the reliability of check valve sealing, and sameThe intensity of Shi Gaishan check valves increases the pressure that check valve is born, prevents check valve deformation failure under buffer brake, be also prevented fromDuck bill is discharged gap tearing, extends its service life, reinforcing rib is further provided with, to enhance entire liquid stream check valveIntensity；Tooth flusher provided by the invention, using the liquid stream check valve, feed liquor and drain are smooth, and waterproof effect is good, and component makesUse longer life expectancy.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specificEmbodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the artUnder the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very muchForm, all of these belong to the protection of the present invention.In addition, although having used some specific terms in this specification, thisA little terms merely for convenience of description, do not limit the present invention in any way.