CN102828937B - Diaphragm pump for fluid - Google Patents
Diaphragm pump for fluid Download PDFInfo
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- CN102828937B CN102828937B CN201210171557.2A CN201210171557A CN102828937B CN 102828937 B CN102828937 B CN 102828937B CN 201210171557 A CN201210171557 A CN 201210171557A CN 102828937 B CN102828937 B CN 102828937B
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- wall portion
- diaphragm pump
- suction valve
- cover body
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Abstract
A diaphragm pump for fluid of the present is provided with a motor, an eccentric rotating table, a spindle unit, a shaking plate, a diaphragm assembly, a shell component, a maintenance component, a middle cover body, a suction valve membrane component and an upper cover body, wherein a pump chamber is formed by clinging the middle cover body to diaphragms, the middle cover body is provided with through-holes for communicating an interior with an exterior of the pump chamber, a discharge hole by which the fluid in the pump chamber is discharged upwards by lessening the volume of the pump chamber, and cylindrical suction valve bases protruding upwards from the vicinity of the through-holes, and the middle cover body is connected with the maintenance component, wherein peripheral surfaces of the suction valve bases are provided with conical surfaces which become narrower from bottom to top. The diaphragm pump for the fluid has fewer diaphragm pump components and can be easily assembled. Moreover, the diaphragm pump for the fluid which is small in noise, and excellent in open and close valve stability and reliability is obtained.
Description
Technical field
The present invention relates to a kind of diaphragm pump for fluid.
Background technique
In the past as diaphragm pump, the diaphragm pump possessing the suction valve body with the movable part being formed as umbrella was used.Diaphragm pump disclosed in Japanese Unexamined Patent Publication 2007-162472 publication has the barrier film being integrally formed multiple diaphragm portion, multiple suction valve body and installs the valve seat of suction valve body.Suction valve body has flexible material by rubber etc. and is formed, and is made up of axle portion, the bulge being located at the central part in axle portion and the movable part that is formed in one end, axle portion.Suction valve body makes bulge resiliently deformable while it to be inserted into forcibly the through hole being arranged on valve seat, by making axle be embedded in through hole, this suction valve body is arranged on valve seat.Pump chamber is configured with multiple by valve seat and each diaphragm portion.
But if use the suction valve body of umbrella, component number will become many, and assembly operation is more bothersome.Further, in order to prevent the interference of diaphragm portion and suction valve body in pump chamber, be necessary to expand pump chamber.Further, owing to using small-sized multiple suction valve bodies, easily break down.Even have that functional reliability is low, opening and closing operations time noise large problem.
Summary of the invention
Therefore, object of the present invention in order to provide, a kind of component number is few, assembling easily, low noise and there is excellent open and close valve stability and the diaphragm pump for fluid of reliability.
The diaphragm pump for fluid of illustrated example comprises: motor, and it has the axle extended on the upside of central axial direction, eccentric turntable, itself and described axle rotate jointly, spindle unit, it is supported on the position leaving described central axis in radial direction relative to described eccentric turntable, and is supported for tilt towards described central axis, swing plate, it is supported on the end of the upside of described spindle unit, septum assembly, its by by towards upper side opening and the multiple barrier films being held in described swing plate be configured centered by described central axis and connect as one as integrated component and formed, case member, it receives described swing plate, and is fixed on described motor also cylindrically, holding member, it is configured between described septum assembly and described swing plate, and keeps described septum assembly, and is connected with described case member, middle lid, it forms pump chamber by being close to described barrier film, described middle lid have by the through hole of the inside and outside connection of described pump chamber, diminished by the volume of described pump chamber and the tap hole that the fluid in described pump chamber is spued to upside and near described through hole towards the suction seat portion of upwardly projecting cylindrical shape, and described middle lid is connected with described holding member, suction valve membrane module, it is configured in the upside of described middle lid, and there is plat part and multiple suction valve film cylindrically, described suction valve film contacts with the mode be separated can freely be close to relative to the outer circumferential face of described suction seat portion, described plat part has the hole that spues overlapped at above-below direction with described tap hole, and have the annular section be close to described middle lid around the described hole that spues, and described plat part is connected with described suction valve film one, and upper cover body, it has the road that spues, inlet passage, outside divider wall parts and in circular divider wall parts, the described road that spues is in the through described upper cover body of above-below direction, described divider wall parts is outstanding towards downside around the described road that spues, and separate the region of the inner peripheral surface side of described suction valve film and the described road that spues, described inlet passage is in the through described upper cover body of above-below direction, described outside divider wall parts is configured in than the position of described suction valve film by radial outside, and it is outstanding towards downside, and contact with the upper surface of described plat part, inspiration road is formed between described outside divider wall parts and described divider wall parts, described upper cover body is configured in the upside of described suction valve membrane module, and be connected with described middle lid, the outer circumferential face of described suction seat portion has the conical surface more and more thinner towards upside.
Diaphragm pump for fluid component number of the present invention is few, and assembling can be made to become easy.Further, noise can be obtained little and there is excellent open and close valve stability and the diaphragm pump for fluid of reliability.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view of diaphragm pump for fluid.
Fig. 2 is the major component sectional view of diaphragm pump for fluid.
Fig. 3 is the stereogram of bellows pumping element.
Fig. 4 is the rear view of middle lid.
Fig. 5 is the stereogram of lid from downside is observed.
Fig. 6 is the plan view of middle lid.
Fig. 7 is the stereogram of lid from upside is observed.
Fig. 8 is the rear view of suction valve membrane module.
Fig. 9 is the stereogram observing suction valve membrane module from downside.
Figure 10 is the rear view of upper cover body.
Figure 11 is the stereogram observing upper cover body from downside.
Symbol description
1 diaphragm pump for fluid
2 holding members
3 septum assemblies
Lid in 4
5 suction valve membrane modules
6 upper cover body
11 case members
12 swing plates
13 eccentric turntable
14 spindle units
15 motors
30 barrier films
32 discharge valve films
33 barrier film drive portions
34 dull and stereotyped membranous parts
42 suck seat portion
45 spue seat portion
46 tap holes
47 discharge paths
51 inlet holes
52 suction valve films
54 plat parts
55 expulsion valves
56 spue hole
61 inlet passages
62 inspiration roads
66 spue road
On the upside of L1
On the downside of L2
15a axle
Embodiment
Below, about the mode of execution of illustrated example, be described with reference to accompanying drawing.In addition, below the central axis of diaphragm pump for fluid 1 is called " central axis L ".Further, using the direction of centrally axis L as above-below direction, relative to diaphragm pump for fluid 1, the side of the oral area 65 that configuration spued is called " upside L1 ", is called " downside L2 " side of configuration motor 15.But this be for convenience of description and definition above-below direction, be not diaphragm pump for fluid 1 posture in use limiting illustrated example.Further, using the direction intersected vertically with central axis L as radial direction.
The exploded perspective view of the diaphragm pump for fluid 1 of Fig. 1 involved by embodiments of the present invention.The major component sectional view of the diaphragm pump for fluid 1 of Fig. 2 involved by embodiments of the present invention.As shown in Figure 1, diaphragm pump for fluid 1 has case member 11, swing plate 12, motor 15, eccentric turntable 13 and spindle unit 14.
Motor 15 has the axle 15a extended towards upside L1.The upper end of axle 15a is outstanding from motor 15 towards upside L1.Case member 11 receives swing plate 12, spindle unit 14 and eccentric turntable 13.The parts that have the end roughly cylindric of case member 11 for extending along the vertical direction, and to upside L1 opening.The end of the upside L1 of the cylindrical part of case member 11 has the shell recess 11a caved in downside L2.There is at the substantial middle place of the bottom surface of case member 11 the through through hole 11b of above-below direction.Motor 15 is fixed in the position i.e. bottom of the downside L2 of case member 11.In addition, case member 11 is not defined as the roughly cylindric parts in the end, for cylinder-like part also can.The end of the upside L1 of axle 15a is configured in the inside of case member 11 by through hole 11b.Eccentric turntable 13 is had at the end winding support of the upside L1 of axle 15a.Eccentric turntable 13 and axle 15a rotate jointly.Spindle unit 14 is supported on the position leaving central axis L in radial direction relative to eccentric turntable 13, and is supported for tilt towards central axis L.Swing plate 12 is supported on the end of the upside L1 of spindle unit 14.Swing plate 12 has the barrier film holding part 12a extended from the position of shaft member 14 towards radial outside.Barrier film holding part 12a comprises the through hole of above-below direction.Barrier film 30 described later remains on swing plate 12.Specifically, the lower end of barrier film 30 is maintained at barrier film holding part 12a place.Swing plate 12 by the rotation of motor 15 with the spindle unit 14 different from the running shaft of motor 15 for running shaft rotates.The running shaft of spindle unit 14 tilts relative to the running shaft of motor 15.
As shown in Figure 1, diaphragm pump for fluid 1 also has holding member 2, septum assembly 3, middle lid 4, suction valve membrane module 5 and upper cover body 6.As depicted in figs. 1 and 2, diaphragm pump for fluid 1 from the top of central axis L downward, configures successively with the order of upper cover body 6, suction valve membrane module 5, middle lid 4, septum assembly 3, holding member 2, case member 11 and motor 15.
As shown in Figure 1, holding member 2 has 3 maintenance through holes 21 of up/down perforation.Maintenance through hole 21 circumferentially roughly at equal intervals, namely circumferentially configures with 120 degree of intervals centered by central axis L.In the present embodiment, through hole 21 is kept to have 3, identical with the quantity of aftermentioned barrier film 30.That is, when barrier film 30 has 4, keep through hole 21 to form by 4.Keep through hole 21 both to can be 2, also can be more than 4.
As shown in Figure 2, holding member 2 is configured between septum assembly 3 and swing plate 12, and keeps septum assembly 3, and is connected with the end of the upside L1 of case member 11.
Septum assembly 3 has 3 barrier films 30, dull and stereotyped membranous part 34,3 discharge valve films 32 and 3 barrier film drive portions 33.Septum assembly 3 is the integrated component formed by elastic members such as rubber.That is, barrier film 30, dull and stereotyped membranous part 34, discharge valve film 32 and barrier film drive portion 33 connect as one as integrated component.That is, septum assembly 3 is not by multiple parts, but be made up of parts.
Further, the stereogram of the septum assembly 3 of Fig. 3 involved by embodiments of the present invention.As shown in Figures 2 and 3, barrier film 30 in roughly bowl-type, and towards upside L1 opening.Dull and stereotyped membranous part 34 radially extends, and has 3 through holes 36 of up/down perforation.3 through holes 36 being formed at dull and stereotyped membranous part 34 centered by central axis L circumferentially roughly at equal intervals, namely circumferentially with 120 degree of intervals configurations.The opening edge portion of barrier film 30 respectively with dull and stereotyped membranous part 34 the underpart of the inner peripheral surface that 3 through holes 36 being formed at dull and stereotyped membranous part 34 limit is connected.That is, barrier film 30 circumferentially roughly at equal intervals, namely circumferentially configures with 120 degree of intervals centered by central axis L.Discharge valve film 32 is in roughly cylindric.3 discharge valve film 32 the upper end portion of the inner peripheral surface that the through hole 36 being formed at dull and stereotyped membranous part 34 limits are extended to upside L1 respectively from dull and stereotyped membranous part 34.That is, discharge valve film 32 extends from the opening edge portion of barrier film 30 towards upside L1.Discharge valve film 32 circumferentially roughly at equal intervals, namely circumferentially configures with 120 degree of intervals centered by central axis L.3 barrier film drive portions 33 extend from the bottom of barrier film 30 to downside L2 respectively.Barrier film 30 and barrier film drive portion 33 run through to be inserted in from the upside L1 of holding member 2 and keep through hole 21.Barrier film drive portion 33 is by running through the barrier film holding part 12a that is inserted in swing plate 12 and being supported.That is, barrier film drive portion 33 is installed on swing plate 12.Because the running shaft of spindle unit 14 tilts relative to the running shaft of motor 15, so the rotation of adjoint axle 15a, the barrier film holding part 12a of swing plate 12 moves up and down.Consequently, barrier film drive portion 33 carries out pump (piston movement), makes barrier film 30 resiliently deformable.
As shown in Figure 3, dull and stereotyped membranous part 34 has along its radially outer end in the face (upper surface 34a) of the upside L1 bulging bar portion 35 outstanding to upside L1.(that is, the axial thickness in bulging bar portion 35 is thicker than the axial thickness of dull and stereotyped membranous part 34.) bulging bar portion 35 is in loop-like.In addition, as shown in Figure 2, septum assembly 3 is clipped between middle lid 4 and holding member 2, and thus, bulging bar portion 35 is pressed by middle lid 4, and resiliently deformable is to the thickness roughly the same with dull and stereotyped membranous part 34.Thus, the inner tightness relative to pump outside of pump can be kept.
Middle lid 4 is connected with the upper end portion 22 of holding member 2.Upper end portion 22 is from the upper surface of holding member 2 position outstanding to upside L1.Septum assembly 3 is clipped between middle lid 4 and holding member 2.Thus, middle lid 4 is close to septum assembly 3, at the Inner Constitution pump chamber of barrier film 30.Middle lid 4 is resin component.Because above-mentioned barrier film drive portion 33 pumps, so barrier film drive portion 33 makes the inner space of barrier film 30 narrow or broaden.Consequently, the volume of the inner space of pump chamber changes.Because the volume of the inner space of pump chamber changes, fluid is inhaled into pump chamber or discharges from pump chamber.
The rear view of the middle lid 4 of Fig. 4 involved by embodiments of the present invention.Further, Fig. 5 is for observing the stereogram of lid 4 in involved by embodiments of the present invention from downside L2.As shown in Figure 4 and Figure 5, middle lid 4 in short cylindrical shape, and has the tap hole 46 of up/down perforation at substantial middle place.By the smaller volume in pump chamber, the fluid in pump chamber is spued to upside L1 by from tap hole 46.At the lower surface of middle lid 4, be configured with 3 the pillar part 46as outstanding from the surrounding of tap hole 46 towards downside L2.The lower end of pillar part 46a is being connected with the position that tap hole 46 overlaps at above-below direction respectively.In addition, pillar part 46a not necessarily 3 is more than 2.The lower end of pillar part 46a contacts with the dull and stereotyped membranous part 34 of septum assembly 3.When not hindering fluid to discharge from tap hole 46, the pillar part 46a preventing septum assembly 3 from floating from holding member 2 can be set.
Further, the plan view of the middle lid 4 of Fig. 6 involved by embodiments of the present invention.Fig. 7 is for observing the stereogram of lid 4 in involved by embodiments of the present invention from upside L1.Middle lid 4 has 3 circle shape grooves 44 and 3 depressed parts 49.Circle shape groove 44 and depressed part 49 are configured in the face (upper surface 4a) of the upside L1 of middle lid 4, and cave in towards downside L2.Circle shape groove 44 and depressed part 49 circumferentially roughly at equal intervals, namely circumferentially configure with 120 degree of intervals centered by central axis L.Further, each circle shape groove 44 respectively with each corresponding depressed part 49 arranged coaxial.Further, depressed part 49 is configured in the inner side of circle shape groove 44.There is in the bottom surface of circle shape groove 44 through hole 48 of up/down perforation.Each circle shape groove 44 has 3 through holes 48.In addition, 1 seat portion 45 that spues has 1 through hole 48 at least.Further, the through hole 48 being formed at middle lid 4 is communicated with the inside and outside of pump chamber.
The lower surface of middle lid 4 has to cylindrically 3 outstanding seat portion 45 that spue of downside L2.Through hole 48 is positioned at the base plate of the seat portion 45 that spues.That is, the bottom surface of circle shape groove 44 forms a part for the upper surface of this base plate.The lower surface of middle lid 4 is configured in and respectively spues seat portion 45 around.And the lower surface of middle lid 4 has the loop-like middle cover divider wall parts 40a given prominence to from outer rim towards downside L2.Middle cover divider wall parts 40a contacts with the upper surface 34a of dull and stereotyped membranous part 34.Further, the gap that the inner peripheral surface by middle cover divider wall parts 40a fences up is defined as discharge path 47.Discharge path 47 is communicated with tap hole 46.Further, discharge valve film 32 contacts with the mode be separated can freely be close to relative to the outer circumferential face of the seat portion 45 that spues.By the smaller volume of pump chamber, the seat portion 45 that makes to spue of the fluid in pump chamber is separated with discharge valve film 32, and this fluid is expelled to discharge path 47 from the gap spued between seat portion 45 and discharge valve film 32.
Position 42(between the inner peripheral surface of circle shape groove 44 and the outer circumferential face of depressed part 49 is hereinafter referred to as suction seat portion 42) in roughly cylindric.Middle lid 4 has 3 and sucks seat portion 42.Suck seat portion 42 to give prominence to towards upside L1 near through hole 48.That is, seat portion 42 is sucked outstanding from the upper surface of the base plate of the seat portion 45 that spues towards upside L1.The lower surface of the base plate of the seat portion that spues 45 has with the substantial middle sucking seat portion 42 recess 41 caved in towards upside L1 in the position that above-below direction overlaps.Middle lid 4 is formed by resin.Thus, by arranging recess 41, shrink mark during ejection formation can be prevented, can shaping suction seat portion 42 accurately.Further, by configuration sucks seat portion 42 in the inner side of the seat portion 45 that spues, the height of the axis of diaphragm pump for fluid 1 can be reduced.
The outer circumferential face sucking seat portion 42 has towards the more and more thinner conical surface 42a of upside L1.Further, the pod 42b of downward-extension is configured with at the outer circumferential face sucking seat portion 42.Pod 42b extends from the intermediate portion of the outer circumferential face sucking seat portion 42 towards upside L1.Sucking the circumference of seat portion 42, pod 42b and through hole 48 are configured in roughly the same position.Than the conical surface 42a of intermediate portion L2 on the lower compared with the conical surface 42a of side L1 more top than intermediate portion, comparatively relax relative to the inclination of central axis L.The lower end of above-mentioned pod 42b is configured near intermediate portion.Further, the lower end of the inner peripheral surface of aftermentioned suction valve film 52 extends to the position of the lower end L2 on the lower than pod 42b, and extends to the position than intermediate portion L2 on the lower.
As shown in Figure 2, suction valve membrane module 5 is configured in the upside L1 of middle lid 4.The rear view of the suction valve membrane module 5 of Fig. 8 involved by present embodiment.Further, Fig. 9 is for observing the stereogram of the suction valve membrane module 5 involved by present embodiment from downside.As shown in Figure 8 and Figure 9, suction valve membrane module 5 has plat part (flat membranous part) 54, spue 56,3, hole inlet hole 51 and 3 suction valve films 52.Suction valve membrane module 5 is the integrated component formed by elastic members such as rubber.That is, plat part 54, the hole 56 that spues, inlet hole 51 and suction valve film 52 connect as one as integrated component.
The groove that suction valve film 52 is inserted in circle shape groove 44 is inner.Suction valve film 52 contacts with the mode be separated can freely be close to relative to the outer circumferential face sucking seat portion 42.When adopting the suction valve body of umbrella in the past, when umbrella valve body and seat portion are close to, the tap-tap of valve can be produced.In diaphragm pump for fluid 1 involved by present embodiment, sound when valve film (suction valve film 52 or discharge valve film 32) and seat portion (sucking seat portion 42 or the seat portion 45 that spues) are close to is quiet, can obtain the diaphragm pump for fluid 1 of low noise.
Further, as described above, by being formed towards the more and more thinner conical surface 42a of upside L1 at the outer circumferential face sucking seat portion 42, the lower ending opening that seat portion 42 is easily inserted into suction valve film 52 is sucked.Consequently, the operability of assembly operation improves, and assembling becomes easy.Further, can between conical surface 42a and suction valve film 52 Special composition.Therefore, when pump work, fluid is present between conical surface 42a and suction valve film 52.Become large by the volume of pump chamber, the pressure drop of pump chamber.Then, the pressure drop of the outer circumferential face of through hole 48 and suction valve film 52.Suction valve film 52 produces pressure difference between inner side and outer side, to suction valve film 52 to strong away from the direction effect sucking seat portion 42.Thus, fluid is inhaled in pump chamber between suction valve film 52 and suction seat portion 42 by through hole 48.
And, as described above, suck the outer circumferential face of seat portion 42 because pod 42b is configured in, so when being present in the pressure drop of fluid of radial outside of suction valve film 52, the fluid easily in generation pod 42b and be present in suction valve film 52 radial outside fluid between pressure difference.Therefore, suction valve film 52 easily leaves and sucks seat portion 42, successfully can carry out the guiding of fluid.Thus, the power consumption of motor during diaphragm pump for fluid work can be lowered.
Further, as described above, because pod 42b and through hole 48 are configured in roughly the same position, the fluid of flowing in groove is inhaled in pump chamber by through hole 48 after suction valve film 52 leaves from suction seat portion 42 at once.
Plat part 54 is the flat position of radial extension.Plat part 54 has spue hole 56 and 3 inlet holes 51 of up/down perforation.The lower surface of plat part 54 has the annular section be close to middle lid 4 around the hole 56 that spues.The hole 56 that spues is configured in the substantial middle place of plat part 54, and overlaps at above-below direction with tap hole 46 when fluid expulsion.Plat part 54 has the expulsion valve 55 that the inner side from the inner peripheral surface limited the hole 56 that spues of suction valve membrane module 5 towards the hole 56 that spues extends.Spue hole 56 in roughly arc-shaped.Expulsion valve 55 configures along the hole 56 that spues.Expulsion valve 55 is in roughly semicircle.Expulsion valve 55 observes the tap hole 46 of lid 4 covering from central axis L.Thus, anti-fluid can be integrally constituted from the valve of aftermentioned road 66 adverse current that spues and suction valve membrane module 5.Thus can the increase of preventing portion number of packages.
Inlet hole 51 is configured in than the position of hole 56 by radial outside that spue, and circumferentially configures at substantially equal intervals centered by central axis L.That is, inlet hole 51 is circumferentially with 120 degree of interval configurations.Expulsion valve 55 overlaps with tap hole 46 at above-below direction.3 suction valve films 52 are in roughly cylindric, and the underpart of the inner peripheral surface that inlet hole 51 limits is extended to downside L2 respectively from plat part 54.That is, suction valve film 52 centered by central axis L circumferentially roughly at equal intervals, namely circumferentially with the configuration of 120 degree of intervals, and the face (lower surface 54b) of downside L2 from plat part 54 extends to downside L2.Suction valve film 52 contacts with the mode be separated can freely be close to relative to the outer circumferential face sucking seat portion 42.
As shown in Figure 8 and Figure 9, the plat part 54 of suction valve membrane module 5 has 3 location indentations 53 caved in from lower surface 54b towards upside L1.Each location indentations 53 respectively with each suction valve film 52 roughly arranged coaxial.Location indentations 53 is in roughly ring-type.Each location indentations 53 is configured in than the position of suction valve film 52 by radial outside.
Further, plat part 54 has along its radially outer end of the lower surface 54b convex strip portions 59 outstanding to downside L2.(that is, the axial thickness of convex strip portions 59 is thicker than the axial thickness of plat part 54.) convex strip portions 59 is formed as loop-like.In addition, as shown in Figure 2, suction valve membrane module 5 is clipped between middle lid 4 and upper cover body 6, and thus, convex strip portions 59 is pressed by middle lid 4, and resiliently deformable is to the thickness roughly the same with dull and stereotyped membranous part 34.Thus, the inner tightness relative to pump outside of pump can be kept.
As shown in Figure 1, plat part 54 has the loop-like projecting strip part 58 outstanding to upside L1 along the end of upper surface 54a.
Projecting strip part 58 is made up of outside projecting strip part 58b and inner side projecting strip part 58a.Projecting strip part 58b is outstanding to upside L1 along its radially outer end of the upper surface 54a of plat part 54 in outside.Projecting strip part 58a is outstanding to upside L1 along the radial inner end edge of the upper surface 54a of plat part 54 in inner side.In addition, as shown in Figure 2, suction valve membrane module 5 is clipped between middle lid 4 and upper cover body 6, thus, projecting strip part 58(58a, 58b) pressed by upper cover body 6, and resiliently deformable is to the thickness roughly the same with plat part 54.Thus, discharge path can be kept relative to the inner tightness relative to outside of tightness and pump sucking path.
The rear view of the upper cover body 6 of Figure 10 involved by present embodiment.Further, Figure 11 is for observing the stereogram of the upper cover body 6 involved by present embodiment from downside.As shown in figure 11, upper cover body 6 is configured in the upside L1 of suction valve membrane module 5.Upper cover body 6 is connected with middle lid 4.Suction valve membrane module 5 is clamped by upper cover body 6 and middle lid 4.
As shown in Figure 2, upper cover body 6 has suction oral area 60 and the oral area 65 that spues.Upper cover body 6 radially extends.Upper cover body 6 has in substantial middle position: the through hole of up/down perforation; With from limit this through hole face upper end portion to upside L1 extends in roughly cylindrical shape the oral area 65 that spues.The road 66 that spues is made up of the through hole of substantial middle position and the inner peripheral surface of oral area 65 of spuing being formed at upper cover body 6.Spue road 66 in the through upper cover body 6 of above-below direction.Upper cover body 6 is leaning on the position of radial outside also to have than the through hole being formed at substantial middle position: the through hole of up/down perforation; With from limit this through hole face upper end portion to upside L1 extends in roughly cylindrical shape suction oral area 60.Inlet passage 61 is made up of the inner peripheral surface of the through hole leaning on the position of radial outside to be formed at the through hole than the substantial middle position being formed at upper cover body 6 and suction oral area 60.That is, upper cover body 6 has the through inlet passage of above-below direction 61.Suck oral area 60 with the oral area 65 that spues in roughly cylindric.
The lower surface of upper cover body 6 has in circular divider wall parts 67, and this divider wall parts 67 is outstanding to downside L2 around the road 66 that spues, and is separated in the inner peripheral surface side region of suction valve film 52 and the road 66 that spues.Further, the lower surface of upper cover body 6 has outside divider wall parts 61b, and this outside divider wall parts 61b is configured in than the position of suction valve film 52 by radial outside, and outstanding to downside L2, and contacts with the upper surface 54a of plat part 54.Further, inspiration road 62 is formed between divider walls portion 61b and divider wall parts 67 outside.
The lower surface of upper cover body 6 has 3 support wall portion groups 68 be made up of 3 the circular arc wall portion 68a given prominence to towards downside L2.That is, in the present embodiment, the lower surface of upper cover body 6 has 9 circular arc wall portion 68a.In addition, 1 support wall portion group 68 has 1 circular arc wall portion 68a at least.More particularly, the lower end of outside divider wall parts 61b, divider wall parts 67 and support wall portion group 68 presses plat part 54 towards downside L2.Because the lower end supporting wall portion group 68 presses plat part 54 downwards, therefore can prevent plat part 54 therefrom lid 4 float.Further, suction valve membrane module 5 is clamped by upper cover body 6 and middle lid 4.3 support wall portion group 68 respectively with each suction valve film 52 roughly arranged coaxial, and surround inlet hole 51 around.Support in 3 circular arc wall portion 68a of wall portion group 68 with each of each suction valve film 52 arranged coaxial forming, the circular arc wall portion 68a near central axis L is integrated with divider wall parts 67 one-tenth.Because 1 supports wall portion group 68 and is made up of multiple circular arc wall portion 68a, therefore can successfully by the fluid sucked from inlet passage 61 from the inner side guiding to suction valve film 52 between adjacent circular arc wall portion 68a.
Next the effect of the diaphragm pump for fluid 1 of the invention described above is described.Pump chamber is by being close to septum assembly 3 by middle lid 4 and forming.And, in the position of side L1 more top than holding member 2, form the suction passage be made up of inlet passage 61, inspiration road 62, inlet hole 51, circle shape groove 44 and through hole 48, and the suction valve be made up of suction valve film 52 and suction seat portion 42 is set at suction passage.Further, in the position of side L1 more top than holding member 2, form the stream that spues be made up of the road 66 that spues, the hole 56 that spues, tap hole 46 and discharge path 47, and the discharge valve be made up of discharge valve film 32 and the seat portion 45 that spues is set at the stream that spues.Further, 3 circle shape grooves 44 are not communicated with mutually, and are communicated with inspiration road 62 by suction valve.Further, circle shape groove 44 is communicated with corresponding pump chamber by through hole 48.Further, because axle 15a rotates, so swing plate 12 shakes, thus, swing plate 12, eccentric turntable 13, spindle unit 14 and motor 15 make barrier film drive portion 33 reciprocating.
Here, when making suction valve membrane module 5 and middle lid 4 overlaps, by making the inner peripheral surface of suction valve film 52 insert along the outer circumferential face sucking seat portion 42, can easily and successfully suction valve film 52 is accommodated in circle shape groove 44.And, by inserting the positioning convex portion 43 of lid 4 in (embedding) in location indentations 53, suction valve film 52 and suction seat portion 42 are configured substantially coaxially, and the outer circumferential face of the inner peripheral surface of suction valve film 52 and suction seat portion 42 is close to, form suction valve.Further, suction valve film 52 and discharge valve film 32 are configured substantially coaxially.That is, suction valve membrane module 5 and middle lid 4 are properly positioned and assemble.
Further, the convex strip portions 59 of suction valve membrane module 5 is compressed and is close to the upper surface 4a of middle lid 4, and projecting strip part 58 is compressed and is close to the lower surface of upper cover body 6.And the bulging bar portion 35 of septum assembly 3 is compressed and is close to the lower surface of middle lid 4.Thus, the inner space that can divide outside (atmospheric side) and be combined by case member 11, holding member 2, septum assembly 3, middle lid 4, suction valve membrane module 5 and upper cover body 6 and formed, and this inner space can be divided into low voltage side (suction passage) and high pressure side (spue stream).
If drive motor 15, swing plate 12 will rotate shake.With the shake of swing plate 12, barrier film drive portion 33 is reciprocating.Thus, when pump chamber expands from compressive state, become negative pressure in pump chamber, the fluid be attracted due to negative pressure makes suction valve film 52 be separated (leaving) from suction seat portion 42 in expanding shape, makes inspiration road 62 and pump chamber become connected state.Due to suction function, fluid flows into pump chamber through suction passage.
Further, discharge valve film 32 is adsorbed due to negative pressure and is crimped (being close to) in the seat portion 45 that spues.Anti-fluid immerses pump chamber from discharge path 47.
Afterwards, when pump chamber being compressed in the to-and-fro motion by barrier film drive portion 33, fluid pressing discharge valve film 32 in pump chamber, discharge valve film 32 is made to be separated (leaving) from the seat portion 45 that spues in expanding shape, discharge path 47 and pump chamber become connected state, and the fluid in pump chamber is discharged from the road 66 that spues.Further, due to the compression of pump chamber, the fluid in circle shape groove 44 makes suction valve film 52 be crimped on and sucks seat portion 42.Suction valve makes suction passage become cut-off state, and anti-fluid flows out to inspiration road 62.
Above, embodiments of the present invention are illustrated, but the present invention is not limited to above explanation, only otherwise conflictingly just suitably can carry out various change.Barrier film 30, discharge valve film 32, barrier film drive portion 33 and be formed at the through hole 36 not necessarily 3 of dull and stereotyped membranous part 34, as long as multiple.Further, through hole 21 is kept too.
Further, seat portion 42, circle shape groove 44, the seat portion that spues 45 and depressed part 49 not necessarily 3 is sucked, as long as multiple.
Further, inlet hole 51 and suction valve film 52 not necessarily 3, as long as multiple.Further, wall portion group 68 is supported too.
Further, discharge valve film 32, the seat portion that spues 45 are not limited to the shape of mode of execution.The barrier film that as long as the fluid in pump chamber can be made to be spued by discharge valve and suction valve and be sucked by the change of the volume of pump chamber, which type of structure can.
Claims (19)
1. a diaphragm pump for fluid, is characterized in that, this diaphragm pump for fluid comprises:
Motor, it has the axle extended on the upside of central axial direction;
Eccentric turntable, itself and described axle rotate jointly;
Spindle unit, it is supported on the position leaving described central axis in radial direction relative to described eccentric turntable, and is supported for tilt towards described central axis;
Swing plate, it is supported on the end of the upside of described spindle unit;
Septum assembly, its by by towards upper side opening and the multiple barrier films being held in described swing plate be configured centered by described central axis and connect as one as integrated component and formed;
Case member, it receives described swing plate, and is fixed on described motor also cylindrically;
Holding member, it is configured between described septum assembly and described swing plate, and keeps described septum assembly, and is connected with described case member;
Middle lid, it forms pump chamber by being close to described barrier film, described middle lid is had the through hole of the inside and outside connection of described pump chamber, is diminished by the volume of described pump chamber and the tap hole spued to upside by the fluid in described pump chamber and suction seat portion cylindrically upwardly projecting near described through hole, and described middle lid is connected with described holding member;
Suction valve membrane module, it is configured in the upside of described middle lid, and there is plat part and multiple suction valve film cylindrically, described suction valve film contacts with the mode be separated can freely be close to relative to the outer circumferential face of described suction seat portion, described plat part has the hole that spues overlapped at above-below direction with described tap hole when fluid expulsion, and have the annular section be close to described middle lid around the described hole that spues, and described plat part is connected with described suction valve film one; And
Upper cover body, it has the road that spues, inlet passage, outside divider wall parts and in circular divider wall parts, the described road that spues is in the through described upper cover body of above-below direction, described divider wall parts is outstanding towards downside around the described road that spues, and separate the region of the inner peripheral surface side of described suction valve film and the described road that spues, described inlet passage is in the through described upper cover body of above-below direction, described outside divider wall parts is configured in than the position of described suction valve film by radial outside, and it is outstanding towards downside, and contact with the upper surface of described plat part, inspiration road is formed between described outside divider wall parts and described divider wall parts, described upper cover body is configured in the upside of described suction valve membrane module, and be connected with described middle lid,
The outer circumferential face of described suction seat portion has the conical surface more and more thinner towards upside.
2. diaphragm pump for fluid according to claim 1,
The pod of above-below direction extension is configured with at the outer circumferential face of described suction seat portion.
3. diaphragm pump for fluid according to claim 2,
In the circumference of described suction seat portion, described pod is configured in identical position with described through hole.
4. diaphragm pump for fluid according to any one of claim 1 to 3,
Described suction valve membrane module has expulsion valve, and described expulsion valve extends from the inner peripheral surface limited the described hole that spues of described suction valve membrane module towards the inner side in the described hole that spues, and observes from described central axis and cover described tap hole.
5. diaphragm pump for fluid according to any one of claim 1 to 3,
The lower surface of described middle lid has the seat portion that spues cylindrically of giving prominence to towards downside,
Described barrier film has the discharge valve film cylindrically extended towards upside from opening edge portion,
The base plate of the seat portion that spues described in described through hole is positioned at, and described discharge valve film contacts with the mode be separated can freely be close to relative to the outer circumferential face of the described seat portion that spues.
6. diaphragm pump for fluid according to claim 5,
Described suction seat portion is from the upper surface of the base plate of the described seat portion that spues towards upwardly projecting.
7. diaphragm pump for fluid according to claim 6,
The lower surface of the base plate of the described seat portion that spues has with the central authorities of described suction seat portion the recess caved in towards upside in the position that above-below direction overlaps.
8. diaphragm pump for fluid according to claim 5,
Multiple pillar part outstanding towards downside around described tap hole are configured with at the lower surface of described middle lid,
The lower end of pillar part described in each is being connected with the position that described tap hole overlaps at above-below direction, and the lower end of described pillar part contacts with described septum assembly.
9. diaphragm pump for fluid according to claim 6,
Multiple pillar part outstanding towards downside around described tap hole are configured with at the lower surface of described middle lid,
The lower end of pillar part described in each is being connected with the position that described tap hole overlaps at above-below direction, and the lower end of described pillar part contacts with described septum assembly.
10. diaphragm pump for fluid according to claim 7,
Multiple pillar part outstanding towards downside around described tap hole are configured with at the lower surface of described middle lid,
The lower end of pillar part described in each is being connected with the position that described tap hole overlaps at above-below direction, and the lower end of described pillar part contacts with described septum assembly.
11. diaphragm pump for fluids according to claim 4,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
12. diaphragm pump for fluids according to any one of claim 1 to 3,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
13. diaphragm pump for fluids according to claim 5,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
14. diaphragm pump for fluids according to claim 6,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
15. diaphragm pump for fluids according to claim 7,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
16. diaphragm pump for fluids according to claim 8,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
17. diaphragm pump for fluids according to claim 9,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
18. diaphragm pump for fluids according to claim 10,
The lower surface of described upper cover body has the support wall portion group be made up of multiple circular arc wall portion of giving prominence to towards downside, and the lower end of described support wall portion group presses described plat part towards downside.
19. diaphragm pump for fluids according to claim 11,
Described suction valve membrane module also has multiple inlet hole,
Described suction valve film the underpart of the inner peripheral surface that described inlet hole limits is extended towards downside from described plat part,
Multiple described support wall portion group respectively with suction valve film arranged coaxial described in each, and surround around described inlet hole,
Described circular arc wall portion near described central axis becomes to be integrated with described divider wall parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011133705A JP5706244B2 (en) | 2011-06-15 | 2011-06-15 | Diaphragm pump for fluid |
| JP2011-133705 | 2011-06-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102828937A CN102828937A (en) | 2012-12-19 |
| CN102828937B true CN102828937B (en) | 2015-05-20 |
Family
ID=47332192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210171557.2A Expired - Fee Related CN102828937B (en) | 2011-06-15 | 2012-05-29 | Diaphragm pump for fluid |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5706244B2 (en) |
| CN (1) | CN102828937B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020199924A1 (en) * | 2019-04-02 | 2020-10-08 | 广东德昌电机有限公司 | Diaphragm pump and coffee maker using same |
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| CN104791226A (en) * | 2014-01-16 | 2015-07-22 | 蔡应麟 | Shock absorption structure of diaphragm booster pump |
| CN104791235B (en) * | 2014-01-16 | 2018-10-26 | 蔡应麟 | The shock-dampening method of diaphragm booster pump |
| JP6080080B2 (en) * | 2014-05-20 | 2017-02-15 | 蔡応麟 | Vibration reduction structure of 4 compression chamber diaphragm pump |
| JP6593579B2 (en) * | 2015-04-27 | 2019-10-23 | ミツミ電機株式会社 | Small pump and diaphragm assembly used therefor |
| CN110318988A (en) * | 2018-03-29 | 2019-10-11 | 小卫（上海）生物科技有限公司 | A kind of diaphragm pump |
| CN112639340A (en) * | 2018-08-29 | 2021-04-09 | 伸和控制工业股份有限公司 | Diaphragm and diaphragm valve for valve |
| CN111425378A (en) * | 2020-05-15 | 2020-07-17 | 杨敦钿 | Hydraulic pump with capsule type pump liquid mechanism |
| CN114382684A (en) * | 2020-10-16 | 2022-04-22 | 日本电产株式会社 | Pump and electric product |
| CN112392701B (en) * | 2020-11-30 | 2022-06-10 | 厦门坤锦电子科技有限公司 | Micro fluid pump and pressure fluid application device comprising same |
| CN115143074A (en) * | 2022-03-05 | 2022-10-04 | 广东爱迪机电科技有限公司 | Noise reduction and silencing vacuum pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2013002347A (en) | 2013-01-07 |
| CN102828937A (en) | 2012-12-19 |
| JP5706244B2 (en) | 2015-04-22 |
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