US20100068082A1 - Leakage-Proof Contrivance for Upper Hood of Diaphragm Pump - Google Patents
Leakage-Proof Contrivance for Upper Hood of Diaphragm Pump Download PDFInfo
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- US20100068082A1 US20100068082A1 US12/585,417 US58541709A US2010068082A1 US 20100068082 A1 US20100068082 A1 US 20100068082A1 US 58541709 A US58541709 A US 58541709A US 2010068082 A1 US2010068082 A1 US 2010068082A1
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- diaphragm
- piston
- upper hood
- ridge
- orientating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
Definitions
- the present invention provides a leakage-proof contrivance for upper hood of diaphragm pump exclusively used in RO (Reverse Osmosis) Purification, particularly for one that can block and prevent the pressurized water of the pump upper hood from leaking into the associated motor so that the “water leakage drawback” incurred by the tiny water channel and worsened by “water hammer” effect can be thoroughly solved.
- RO Reverse Osmosis
- 1 through 6 essentially comprises a motor 10 with an output shaft (not shown), a round upper hood chassis 11 with plural screw bores 12 disposed at peripheral thereof, three wobble roundels 13 with each threaded bores 14 therein, a diaphragm 20 of angles-rounded triangular form, three piston pumping disks 30 with three tiered bores 31 and three screws 32 , a piston valve 40 on a piston base 401 of angles-rounded triangular form, a pump upper hood 50 with plural perforated holes 51 disposed at bottom peripheral thereof, a sealing collar gasket 60 of angles-rounded triangular form, an anti-backflow plastic pad 70 and three valvular roundels 80 as well as plural bolts 2 ; by driving the bolts 2 through aligned corresponding perforated holes 51 at the pump upper hood 50 and screw bores 12 at the upper hood chassis 11 , all the upper hood chassis 11 , wobble roundels 13 , diaphragm 20 , piston pumping disks 30 , valvular roundels 80
- Said diaphragm 20 of angles-rounded triangular form which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by an inner ring ridge 21 and an outer rim ridge 22 with outer lateral surface 222 and a top surface 221 (as shown in FIG. 2 ), includes an annular sealing groove 201 beset by the inner ring ridge 21 and outer rim ridge 22 , three evenly disposed radial ridged ribs 23 , three evenly distributed piston pumping zones 24 and three hollow shafts 25 , wherein each said piston pumping zone 24 is defined by two flanked adjacent radial ridged ribs 23 and corresponding arc section of the inner ring ridge 21 (as shown in FIGS.
- each said hollow shaft 25 is disposed in each piston pumping zone 24 with location relatively corresponding with each threaded bore 14 in each wobble roundel 13 so that the diaphragm 20 can be firmly sandwiched by top three piston pumping disks 30 and bottom three wobble roundels 13 by means of running each screw 32 orderly via each tiered bore 31 in the piston pumping disks 30 and each corresponding hollow shaft 25 in each piston pumping zones 24 of the diaphragm 20 as well as each corresponding threaded bore 14 of the each wobble roundel 13 respectively (as shown in FIGS. 2 and 5 );
- Each said piston pumping disk 30 is securely fixed in each corresponding piston pumping zones 24 of the diaphragm 20 respectively by each screw 32 running through each corresponding tiered bore 31 thereof;
- Said piston valve 40 which is integrally molded on a piston base 401 of angles-rounded triangular form with three orientating ridges 47 to be securely positioned on the diaphragm 20 , basically includes a central water discharge mount 41 and three peripheral water inlet mounts 44 , wherein said piston base 401 of angles-rounded triangular form, which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by an annular sealing ridge 402 to beset in the corresponding annular sealing groove 201 of the diaphragm 20 , has a rim top surface 403 over the annular sealing ridge 402 ; said water discharge mount 41 , which is bowl-shaped profile disposed on the central top of the piston valve 40 , has a central orientating hole 42 and three grouped water discharge openings 43 evenly distributed in three equivalent sectors; each said water inlet mount 44 , which is integrally molded in partial-cut round shape in upside-down bowl-shaped profile in circumjacent contact the central water discharge mount 41 , has a
- Said sealing collar gasket 60 which is made of soft material in roughly angles-rounded triangular form to be disposed between the piston valve 40 and pump upper hood 50 , has a top surface 61 , a bottom surface 62 and an outer lateral surface 63 ;
- Said anti-backflow plastic pad 70 which is made of soft elastic material with a top clover-like disk of plano-convex profile in divided three-leaved shape, has a central orientating pin 71 downwardly disposed beneath the top disk so that the orientating pin 71 can be inserted into the orientating hole 42 in the water discharge mount 41 of the piston valve 40 with the three-leaved top disk thereof closely attach over three grouped water discharge openings 43 in respective three sector;
- Each said valvular roundels 80 which is made of soft elastic material with a top disk of piano-convex profile, has a central orientating pin 81 upwardly disposed on the top disk so that the orientating pin 81 can be inserted into the orientating hole 45 in each corresponding water inlet mount 44 with the top disk closely attach and block all water inlet vent 46 in each corresponding water inlet mount 44 so that a preliminary low-pressured chamber 3 is created between each valvular roundel 80 and each corresponding piston pumping disk 30 with one connection end of the low-pressured chamber 3 being inter-fluent with the water discharge openings 43 in each corresponding water discharge mount 41 (as shown in FIGS. 4 , 5 and 6 ); and
- Said pump upper hood 50 which is a hollow body with bottom open, has a water input orifice 52 and a water output orifice 53 respectively disposed on each opposed top peripheral thereof as well as plural perforated holes 51 disposed at bottom peripheral thereof (as shown in FIGS.
- an inner tiered cavity 54 internally including an internal lower tiered brim 541 with a horizontal bottom surface 542 and a vertical wall 543 as well as an upper tiered brim 544 with a horizontal bottom surface 545 and a vertical wall 546 is inwardly created from the opening side of the pump upper hood 50 so that the horizontal bottom surface 542 and vertical wall 543 of the lower tiered brim 541 can closely attach the top surface 61 and outer lateral surface 63 of the sealing collar gasket 60 in match manner while the horizontal bottom surface 545 and vertical wall 546 of the upper tiered brim 544 can closely attach the top surface 221 and outer lateral surface 222 for the outer rim ridge 22 of the diaphragm 20 in match manner (as the partially enlarged view of tiered groove 54 shown in FIG.
- an innermost annular pit 55 is outwardly created from the internal top wall of the pump upper hood 50 ; and an intensive high-pressured chamber 4 is created by the internal space encompassed by the inner wall of the annular pit 55 and the top surface of the water discharge mount 41 in the piston valve 40 when the bottom rim surface of the annular pit 55 closely attach the upper rim surface of the water discharge mount 41 in the piston valve 40 (as shown in FIGS. 4 and 5 ).
- FIGS. 4 through 6 show the pumping operation of aforesaid conventional diaphragm pump.
- the tap water W which comes from the water input orifice 52 of the pump upper hood 50 to push open the valvular roundel 80 in the water inlet mount 44 , flows into the low-pressured chamber 3 via the water inlet vent 46 in the water inlet mount 44 of the piston valve 40 (as arrowheads shown in FIGS.
- each corresponding piston pumping disk 30 will move up and down in each corresponding piston pumping zone 24 of the diaphragm 20 so that the tap water W in the low-pressured chamber 3 will be preliminarily pumped up to water pressure of 80 psi-100 psi as become pressurized water Wp;
- the pressurized water Wp is enabled to push open the anti-backflow plastic pad 70 over the water discharge mount 41 of the piston valve 40 so that the pressurized water Wp can flow into the high-pressured chamber 4 via the water discharge openings 43 of the water discharge mount 41 ; and
- the pressurized water Wp is pumped out the high-pressured chamber 4 and expelled out the diaphragm pump via the water output orifice 53 (as arrowhead shown in FIG. 6 ) for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO
- each corresponding sector of the diaphragm 20 will follow an orderly up and down movement (as shown in FIG. 6 ) and a vertical force Fv is incurred from the rim top surface 403 of the piston base 401 on the piston valve 40 to continuously exert on the bottom surface 62 of the sealing collar gasket 60 (as shown in FIG.
- top surface 61 and bottom surface 62 of the sealing collar gasket 60 will be continuously suffered squeezing stress of upwards vertical force Fs , from the rim top surface 403 of the piston base 401 and the downwards vertical force Fv from horizontal bottom surface 542 for the lower tiered brim 541 of the tiered cavity 54 (as shown in FIG. 8 ); Because three wobble roundels 13 orderly move up and down three times for each revolution of the motor 10 , the sealing collar gasket 60 will be orderly suffered squeezing stress of vertical forces Fv three times.
- the original thickness H defined between the top surface 61 and bottom surface 62 of the sealing collar gasket 60 will be getting thinner into a thinned thickness h less than the original thickness H (as shown in FIGS. 7 and 8 ) so that a gap G in difference from the original thickness H deducting the thinned thickness h is created either between the rim top surface 403 of the piston base 401 on the piston valve 40 and the bottom surface 62 of the sealing collar gasket 60 (as shown in FIG. 9 ) or between the horizontal bottom surface 542 of the lower tiered brim 541 at the tiered cavity 54 of the pump upper hood 50 and the top surface 61 of the sealing collar gasket 60 (as shown in FIG. 10 ).
- both of diaphragm 20 and pump upper hood 50 are made of rigid plastic material instead of soft rubber material, they can not closely attach each other. Besides, a clearance ⁇ will be created between the outer lateral surface 222 of outer rim ridge 22 on the diaphragm 20 and the vertical wall 546 of the upper tiered brim 544 on the tiered cavity 54 after certain long time operation (as shown in FIGS. 9 and 10 ). Because both of the gap G edge and clearance ⁇ edge abut each other in inter-fluent manner, a tiny water channel is created throughout the gap G and clearance ⁇ .
- the water input orifice 52 of the pump upper hood 50 is connected to the pipe joint J of the tap water for a reservoir tower (as hypothetic line shown in FIG. 4 ).
- a rather drop height of the reservoir tower and the diaphragm pump may create a water hammer Wg effect in all probability when the motor 10 turns into ON or OFF instance.
- the “water leakage drawback” incurred in the pump upper hood 50 not only causes the local abnormal pressure to result in decrease of overall pumping efficiency but also contaminates and destroys some external components in the associated RO (Reverse Osmosis) purifier or RO purification system with even worse result in shutting down the integral system by burning the motor 10 as leakage getting into the motor 10 via the space between the wobble roundels 13 and upper hood chassis 11 (as shown in FIG. 9 ).
- the improved model of diaphragm pump comprises same components as those components in the prior art of Taiwan Patent 095122820 except following alteration that the original outer rim ridge 22 with a top surface 223 and an outer lateral surface 224 in the diaphragm 20 is altered into an outer rim ridge 22 a with increasing the height thereof, and the original tiered cavity 54 in the pump upper hood 50 is altered into a simple cavity 56 without tiered brim but having a horizontal bottom surface 561 and an inner vertical wall 562 thereof, wherein, the height for the outer lateral surface 224 of the outer rim ridge 22 a almost equals that for the vertical wall 562 of the simple cavity 56 so that the top surface 223 of the outer rim ridge 22 a on the diaphragm 20 is flush with the top surface 61 of the sealing collar gasket 60 and closely attach on the horizontal bottom surface 561 of the simple cavity 56 , whereas the outer lateral surface 224 of the outer rim ridge 22 a just closely attach the inner vertical wall 562
- the altered conventional diaphragm pump provides a false illusion that whose new product seemingly appears in no “water leakage drawback” manner in the beginning stage but with failure in practical life test under normal weather condition.
- the “water leakage drawback” in the altered conventional diaphragm pump aforesaid will be getting worse under adverse weather condition such as tropical or frigid zones due to drastic hot-expansion and cold-shrink effect as well as expedited aging effect happening in the sealing collar gasket 60 .
- the altered conventional diaphragm pump aforesaid has always to be replaced due to malfunction before the guarantee expiry.
- the primary object of the present invention is to provide a leakage-proof contrivance for upper hood of diaphragm pump by modifying the original vertical wall of the internal lower tiered brim in the tiered cavity of the conventional pump upper hood into a sloped wall;
- the top surface and bottom surface of the sealing collar gasket can respectively inset in the tiered cavity of the pump upper hood and the piston base of the piston valve in much more closely attachment manner to block and prevent the pressurized water from leaking out of the diaphragm pump.
- the other object of the present invention is to provide a leakage-proof contrivance for upper hood of diaphragm pump by modifying the original simple cavity with a horizontal bottom surface and an inner vertical wall of the conventional pump upper hood into a simple cavity with a sloped wall in addition to the horizontal bottom surface and an inner vertical wall thereof such that one edge of the sloped wall abuts with the horizontal bottom surface while the other edge of the sloped wall abuts with the vertical wall respectively;
- the top surface and bottom surface of the sealing collar gasket can respectively inset in the simple cavity of the pump upper hood and the piston base of the piston valve in much more closely attachment manner to block and prevent the pressurized water from leaking out of the diaphragm pump.
- FIG. 1 is a exploded perspective view showing the conventional diaphragm pump of the prior art.
- FIG. 2 is a sectional view showing the conventional diaphragm pump of the prior art.
- FIG. 3 is a assembly perspective view of the conventional diaphragm pump.
- FIG. 4 is a sectional view taken along the line 4 - 4 of the FIG. 3 .
- FIG. 5 is a sectional view taken along the line 5 - 5 of the FIG. 3 .
- FIG. 6 is a sectional view showing the pumping operation of the conventional diaphragm pump.
- FIG. 7 is a sectional schematic view showing the sealing collar gasket suffered from normal stress between pump upper hood and piston valve during pumping operation of the conventional diaphragm pump.
- FIG. 8 is a sectional schematic view showing the sealing collar gasket deformed to strain after having been suffered from normal stress between pump upper hood and piston valve during pumping operation of the conventional diaphragm pump.
- FIG. 9 is a partially enlarged view taken from the left corner A of the FIG. 6 .
- FIG. 10 is a partially enlarged view taken from the right corner B of the FIG. 6 .
- FIG. 11 is a sectional schematic view for another type of the conventional diaphragm pump.
- FIG. 12 is a sectional assembly view for another type of the conventional diaphragm pump.
- FIG. 13 is a partially enlarged view taken from the right corner C of the FIG. 12 .
- FIG. 14 is a sectional schematic view showing the exploded components for the first exemplary embodiment of the present invention.
- FIG. 15 is a sectional schematic view showing the assembled components for the first exemplary embodiment of the present invention.
- FIG. 16 is a partially enlarged view taken from the right corner D of the FIG. 15 .
- FIG. 17 is a sectional schematic view showing the exploded components for the second exemplary embodiment of the present invention.
- FIG. 18 is a sectional schematic view showing the assembled components for the second exemplary embodiment of the present invention.
- FIG. 19 is a partially enlarged view taken from the right corner E of the FIG. 18 .
- FIGS. 14 through 16 show the first exemplary embodiment for the “leakage-proof contrivance for upper hood of diaphragm pump” of the present invention.
- the present invention Basing on the conventional diaphragm pump disclosed in the previous paragraph of “BACKGROUND OF THE INVENTION” in association with ( FIGS. 1 through 6 ), the present invention comprises same components as those components in the prior art of Taiwan Patent 095122820 except following modification that the original vertical wall 543 of the internal lower tiered brim 541 in the tiered cavity 54 of the conventional pump upper hood 50 is modified into a sloped wall 547 (as the partially enlarged view shown in FIG. 14 ).
- the structural advantage in the pumping operation for the first exemplary embodiment of the “leakage-proof contrivance for upper hood of diaphragm pump” in the present invention can be manifested as below: Firstly, stack the piston valve 40 over the diaphragm 20 in assembled manner; Secondly, sleeve the sealing collar gasket 60 over the rim top surface 403 of the piston base 401 on the piston valve 40 to have both of the sealing collar gasket 60 and piston valve 40 with diaphragm 20 become a preliminary integral entity; and Finally, inset the preliminary integral entity of the sealing collar gasket 60 and piston valve 40 with diaphragm 20 into the tiered cavity 54 of the pump upper hood 50 in closely attachment manner to become a final integral entity (as shown in FIG. 15 ).
- the outer lateral surface 63 of the sealing collar gasket 60 will immediately cause a horizontal force Fh incurred by the sloped wall 547 of the lower tiered brim 541 in the tiered cavity 54 (as arrowhead shown in FIG. 16 ); Meanwhile, by the confinement from the circumferential surface 48 of the orientating ridge 47 on the piston valve 40 , the sealing collar gasket 60 will be slantwise squeezed and vertically deformed to produce normal outwards stress F in both upwards and downwards manners (as half-solid arrowhead shown in FIG. 16 ).
- the top surface 61 and bottom surface 62 of the sealing collar gasket 60 can respectively inset in the tiered cavity 54 of the pump upper hood 50 and the piston base 401 of the piston valve 40 in much more closely attachment manner to block and prevent the pressurized water Wp from leaking out of the diaphragm pump.
- FIGS. 17 to 19 show the second exemplary embodiment for the “leakage-proof contrivance for upper hood of diaphragm pump” of the present invention. Basing on the improved model of the conventional diaphragm pump disclosed in the previous paragraph of “BACKGROUND OF THE INVENTION” in association with ( FIGS. 17 to 19 , which show the second exemplary embodiment for the “leakage-proof contrivance for upper hood of diaphragm pump” of the present invention. Basing on the improved model of the conventional diaphragm pump disclosed in the previous paragraph of “BACKGROUND OF THE INVENTION” in association with ( FIGS.
- the present invention comprises same components as those components in the prior art of the improved model aforesaid except following modification that the original simple cavity 56 with a horizontal bottom surface 571 and an inner vertical wall 572 of the conventional pump upper hood 50 is modified into a simple cavity 57 with a sloped wall 573 in addition to a horizontal bottom surface 571 and an inner vertical wall 572 thereof such that one edge of the sloped wall 573 abuts with the horizontal bottom surface 571 while the other edge of the sloped wall 573 abuts with the vertical wall 572 respectively; Besides, the original outer rim ridge 22 with a top surface 223 and an outer lateral surface 224 in the diaphragm 20 is modified into an outer rim ridge 22 a with increasing the height thereof such that the height for the outer lateral surface 224 of the outer rim ridge 22 a is slightly less than that for the vertical wall 572 of the simple cavity 57 so that the space encompassed by the horizontal bottom surface 571 and vertical wall 572 of the simple cavity 57
- the structural advantage in the pumping operation for the second exemplary embodiment of the “leakage-proof contrivance for upper hood of diaphragm pump” in the present invention can be manifested as below: Firstly, stack the piston valve 40 over the diaphragm 20 in assembled manner; Secondly, sleeve the sealing collar gasket 60 over the rim top surface 403 of the piston base 401 on the piston valve 40 to have both of the sealing collar gasket 60 and piston valve 40 with diaphragm 20 become a preliminary integral entity; and Finally, inset the preliminary integral entity of the sealing collar gasket 60 and piston valve 40 with diaphragm 20 into the simple cavity 57 of the pump upper hood 50 in closely attachment manner to become a final integral entity (as shown in FIG. 18 ).
- the top surface 61 and bottom surface 62 of the sealing collar gasket 60 can respectively inset in the simple cavity 57 of the pump upper hood 50 and the piston base 401 of the piston valve 40 in much more closely attachment manner to block and prevent the pressurized water Wp from leaking out of the diaphragm pump.
- the applicant of the present invention proves that the present invention surely solve the “water leakage drawback” issue without any bad side-effect after practical life test, which has valuable industrial applicability.
- the solving scenario contrived by the present invention is simple with innovative novelty beyond the obviousness of the prior arts, which meet the basic patentable criterion.
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Abstract
The present invention provides a leakage-proof contrivance for upper hood of diaphragm pump by modifying the vertical wall of the lower tiered brim in the tiered cavity of the conventional pump upper hood into a sloped wall. Thereby, when stacked assembly of sealing collar gasket, piston valve and diaphragm is inset into the tiered cavity of the pump upper hood in closely attachment manner, the sealing collar gasket will be slantwise squeezed and vertically deformed to produce normal outwards stress in both upwards and downwards manners. Thus, the sealing collar gasket can respectively inset in the pump upper hood and piston valve in much more closely attachment manner to block and prevent the pressurized water from leaking out of the diaphragm pump.
Description
- This application claims the benefit of provisional U.S. Patent Application No. 61/136,586, field Sep. 17, 2008.
- The present invention provides a leakage-proof contrivance for upper hood of diaphragm pump exclusively used in RO (Reverse Osmosis) Purification, particularly for one that can block and prevent the pressurized water of the pump upper hood from leaking into the associated motor so that the “water leakage drawback” incurred by the tiny water channel and worsened by “water hammer” effect can be thoroughly solved.
- Currently, the compressing diaphragm pumps, which have been exclusively used with RO (Reverse Osmosis) purifier or RO purification system popularly, includes issued U.S. Pat. Nos. of 4,396,357, 4,610,605, 5,476,367, 5,571,000, 5,615,597, 5,626,464, 5,649,812, 5,706,715, 5,791,882, 5,816,133, 6,048,183, 6,089,838, 6,299,414, 6,604,909, 6,840,745, 6,892,624 and 7,083,392 as well as issued Taiwan Patent 095122820. In which, the Taiwan Patent 095122820, which is applied by the inventor of the present invention and granted to be published, as shown in
FIGS. 1 through 6 , essentially comprises amotor 10 with an output shaft (not shown), a roundupper hood chassis 11 withplural screw bores 12 disposed at peripheral thereof, threewobble roundels 13 with each threadedbores 14 therein, adiaphragm 20 of angles-rounded triangular form, threepiston pumping disks 30 with threetiered bores 31 and threescrews 32, apiston valve 40 on apiston base 401 of angles-rounded triangular form, a pumpupper hood 50 with plural perforatedholes 51 disposed at bottom peripheral thereof, a sealingcollar gasket 60 of angles-rounded triangular form, an anti-backflowplastic pad 70 and threevalvular roundels 80 as well asplural bolts 2; by driving thebolts 2 through aligned corresponding perforatedholes 51 at the pumpupper hood 50 andscrew bores 12 at theupper hood chassis 11, all theupper hood chassis 11,wobble roundels 13,diaphragm 20,piston pumping disks 30,valvular roundels 80,piston valve 40, sealingcollar gasket 60, anti-backflowplastic pad 70 and pumpupper hood 50 are orderly stacked and assembled as an integral entity (as shown inFIG. 3 ). Wherein saidwobble roundels 13, which are evenly disposed in theupper hood chassis 11 in radial manner, are driven by the output shaft of themotor 10 to transform into alternately axial movements respectively; - Said
diaphragm 20 of angles-rounded triangular form, which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by aninner ring ridge 21 and anouter rim ridge 22 with outerlateral surface 222 and a top surface 221 (as shown inFIG. 2 ), includes anannular sealing groove 201 beset by theinner ring ridge 21 andouter rim ridge 22, three evenly disposed radialridged ribs 23, three evenly distributedpiston pumping zones 24 and threehollow shafts 25, wherein each saidpiston pumping zone 24 is defined by two flanked adjacent radialridged ribs 23 and corresponding arc section of the inner ring ridge 21 (as shown inFIGS. 1 and 2 ); and each saidhollow shaft 25 is disposed in eachpiston pumping zone 24 with location relatively corresponding with each threadedbore 14 in eachwobble roundel 13 so that thediaphragm 20 can be firmly sandwiched by top threepiston pumping disks 30 and bottom threewobble roundels 13 by means of running eachscrew 32 orderly via eachtiered bore 31 in thepiston pumping disks 30 and each correspondinghollow shaft 25 in eachpiston pumping zones 24 of thediaphragm 20 as well as each corresponding threadedbore 14 of the eachwobble roundel 13 respectively (as shown inFIGS. 2 and 5 ); Each saidpiston pumping disk 30 is securely fixed in each correspondingpiston pumping zones 24 of thediaphragm 20 respectively by eachscrew 32 running through each correspondingtiered bore 31 thereof; - Said
piston valve 40, which is integrally molded on apiston base 401 of angles-rounded triangular form with threeorientating ridges 47 to be securely positioned on thediaphragm 20, basically includes a centralwater discharge mount 41 and three peripheralwater inlet mounts 44, wherein saidpiston base 401 of angles-rounded triangular form, which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by anannular sealing ridge 402 to beset in the correspondingannular sealing groove 201 of thediaphragm 20, has a rimtop surface 403 over theannular sealing ridge 402; saidwater discharge mount 41, which is bowl-shaped profile disposed on the central top of thepiston valve 40, has a centralorientating hole 42 and three groupedwater discharge openings 43 evenly distributed in three equivalent sectors; each saidwater inlet mount 44, which is integrally molded in partial-cut round shape in upside-down bowl-shaped profile in circumjacent contact the centralwater discharge mount 41, has a centralorientating hole 45 and pluralwater inlet vents 46 evenly distributed in surrounding manner therein; each said orientatingridge 47, which is formed along the footing tangent line circumscribed both adjacentwater inlet mounts 44, has antangent surface 48 to serve as a positioning curb when the sealingcollar gasket 60 stacks on the rimtop surface 403 of the piston base 401(as the partially enlarged view ofpiston valve 40 shown inFIG. 2 ); Said sealingcollar gasket 60, which is made of soft material in roughly angles-rounded triangular form to be disposed between thepiston valve 40 and pumpupper hood 50, has atop surface 61, abottom surface 62 and an outerlateral surface 63; - Said anti-backflow
plastic pad 70, which is made of soft elastic material with a top clover-like disk of plano-convex profile in divided three-leaved shape, has a central orientatingpin 71 downwardly disposed beneath the top disk so that the orientatingpin 71 can be inserted into theorientating hole 42 in thewater discharge mount 41 of thepiston valve 40 with the three-leaved top disk thereof closely attach over three groupedwater discharge openings 43 in respective three sector; - Each said
valvular roundels 80, which is made of soft elastic material with a top disk of piano-convex profile, has a central orientatingpin 81 upwardly disposed on the top disk so that theorientating pin 81 can be inserted into theorientating hole 45 in each correspondingwater inlet mount 44 with the top disk closely attach and block allwater inlet vent 46 in each correspondingwater inlet mount 44 so that a preliminary low-pressuredchamber 3 is created between eachvalvular roundel 80 and each correspondingpiston pumping disk 30 with one connection end of the low-pressuredchamber 3 being inter-fluent with thewater discharge openings 43 in each corresponding water discharge mount 41 (as shown inFIGS. 4 , 5 and 6); and - Said pump
upper hood 50, which is a hollow body with bottom open, has awater input orifice 52 and awater output orifice 53 respectively disposed on each opposed top peripheral thereof as well as plural perforatedholes 51 disposed at bottom peripheral thereof (as shown inFIGS. 1 and 3 ); wherein an innertiered cavity 54 internally including an internal lowertiered brim 541 with ahorizontal bottom surface 542 and avertical wall 543 as well as an uppertiered brim 544 with ahorizontal bottom surface 545 and avertical wall 546 is inwardly created from the opening side of the pumpupper hood 50 so that thehorizontal bottom surface 542 andvertical wall 543 of the lowertiered brim 541 can closely attach thetop surface 61 and outerlateral surface 63 of the sealingcollar gasket 60 in match manner while thehorizontal bottom surface 545 andvertical wall 546 of the uppertiered brim 544 can closely attach thetop surface 221 and outerlateral surface 222 for theouter rim ridge 22 of thediaphragm 20 in match manner (as the partially enlarged view oftiered groove 54 shown inFIG. 2 ); an innermostannular pit 55 is outwardly created from the internal top wall of the pumpupper hood 50; and an intensive high-pressuredchamber 4 is created by the internal space encompassed by the inner wall of theannular pit 55 and the top surface of thewater discharge mount 41 in thepiston valve 40 when the bottom rim surface of theannular pit 55 closely attach the upper rim surface of thewater discharge mount 41 in the piston valve 40 (as shown inFIGS. 4 and 5 ). - Please refer to
FIGS. 4 through 6 , which show the pumping operation of aforesaid conventional diaphragm pump. Firstly, whenmotor 10 is powered on, the tap water W, which comes from thewater input orifice 52 of the pumpupper hood 50 to push open thevalvular roundel 80 in thewater inlet mount 44, flows into the low-pressuredchamber 3 via thewater inlet vent 46 in thewater inlet mount 44 of the piston valve 40 (as arrowheads shown inFIGS. 4 and 5 ); Secondly, upon eachwobble roundel 13 being orderly driven by the driving power from the output shaft of themotor 10, each correspondingpiston pumping disk 30 will move up and down in each correspondingpiston pumping zone 24 of thediaphragm 20 so that the tap water W in the low-pressuredchamber 3 will be preliminarily pumped up to water pressure of 80 psi-100 psi as become pressurized water Wp; Thirdly, the pressurized water Wp is enabled to push open the anti-backflowplastic pad 70 over thewater discharge mount 41 of thepiston valve 40 so that the pressurized water Wp can flow into the high-pressuredchamber 4 via thewater discharge openings 43 of thewater discharge mount 41; and Finally, the pressurized water Wp is pumped out the high-pressuredchamber 4 and expelled out the diaphragm pump via the water output orifice 53 (as arrowhead shown inFIG. 6 ) for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure. - For further retrospectively examining the pumping operation of aforesaid conventional diaphragm pump described above, please refer to
FIGS. 4 , 6 through 10. Upon eachpiston pumping disk 30 orderly moving up and down in each correspondingpiston pumping zone 24 of thediaphragm 20, each corresponding sector of thediaphragm 20 will follow an orderly up and down movement (as shown inFIG. 6 ) and a vertical force Fv is incurred from the rimtop surface 403 of thepiston base 401 on thepiston valve 40 to continuously exert on thebottom surface 62 of the sealing collar gasket 60 (as shown inFIG. 7 ) so that bothtop surface 61 andbottom surface 62 of the sealingcollar gasket 60 will be continuously suffered squeezing stress of upwards vertical force Fs, from the rimtop surface 403 of thepiston base 401 and the downwards vertical force Fv fromhorizontal bottom surface 542 for the lowertiered brim 541 of the tiered cavity 54 (as shown inFIG. 8 ); Because three wobble roundels 13 orderly move up and down three times for each revolution of themotor 10, the sealingcollar gasket 60 will be orderly suffered squeezing stress of vertical forces Fv three times. Normally, themotor 10 runs 700 revolutions per minute (700 RPM) so that the sealingcollar gasket 60 will be suffered squeezing stress of vertical forces Fv 2100 times (700×3=2100). Under such impact of squeezing stress in high frequency, the original thickness H defined between thetop surface 61 andbottom surface 62 of the sealingcollar gasket 60 will be getting thinner into a thinned thickness h less than the original thickness H (as shown inFIGS. 7 and 8 ) so that a gap G in difference from the original thickness H deducting the thinned thickness h is created either between the rimtop surface 403 of thepiston base 401 on thepiston valve 40 and thebottom surface 62 of the sealing collar gasket 60 (as shown inFIG. 9 ) or between thehorizontal bottom surface 542 of the lowertiered brim 541 at thetiered cavity 54 of the pumpupper hood 50 and thetop surface 61 of the sealing collar gasket 60 (as shown inFIG. 10 ). - Because both of
diaphragm 20 and pumpupper hood 50 are made of rigid plastic material instead of soft rubber material, they can not closely attach each other. Besides, a clearanceδ will be created between the outerlateral surface 222 ofouter rim ridge 22 on thediaphragm 20 and thevertical wall 546 of the uppertiered brim 544 on thetiered cavity 54 after certain long time operation (as shown inFIGS. 9 and 10 ). Because both of the gap G edge and clearanceδ edge abut each other in inter-fluent manner, a tiny water channel is created throughout the gap G and clearanceδ. - Besides, for all convention diaphragm pumps, which are used in the RO (Reverse Osmosis) purifier or RO purification system, the
water input orifice 52 of the pumpupper hood 50 is connected to the pipe joint J of the tap water for a reservoir tower (as hypothetic line shown inFIG. 4 ). Whereas the reservoir tower is always set up on the upmost roof of the building, a rather drop height of the reservoir tower and the diaphragm pump may create a water hammer Wg effect in all probability when themotor 10 turns into ON or OFF instance. Since the gap G due to thinning of the sealingcollar gasket 60 and the clearanceδ created between the outerlateral surface 222 ofouter rim ridge 22 on thediaphragm 20 and thevertical wall 546 of the uppertiered brim 544 on thetiered cavity 54 build a tiny water channel because both of the gap G edge and clearanceδ edge abut each other in inter-fluent manner, the tap water W, which is affected by the water hammer Wg effect and come from thewater input orifice 52 of the pumpupper hood 50, will immediately flow into the gap G between the rimtop surface 403 of thepiston base 401 on thepiston valve 40 and thebottom surface 62 of the sealing collar gasket 60 (as shown inFIG. 9 ) or the gap G between thehorizontal bottom surface 542 of the lowertiered brim 541 at thetiered cavity 54 of the pumpupper hood 50 and thetop surface 61 of the sealing collar gasket 60 (as shown inFIG. 10 ); Then, the water hammer Wg affected tap water W will flow into space between the pumpupper hood 50 andupper hood chassis 11 via the clearanceδ created between the outerlateral surface 222 ofouter rim ridge 22 on thediaphragm 20 and thevertical wall 546 of the uppertiered brim 544 on the tiered cavity 54 (as shown inFIG. 10 ); Thereby, a resultant “water leakage drawback” is incurred in the pumpupper hood 50. The “water leakage drawback” incurred in the pumpupper hood 50 not only causes the local abnormal pressure to result in decrease of overall pumping efficiency but also contaminates and destroys some external components in the associated RO (Reverse Osmosis) purifier or RO purification system with even worse result in shutting down the integral system by burning themotor 10 as leakage getting into themotor 10 via the space between thewobble roundels 13 and upper hood chassis 11 (as shown inFIG. 9 ). - For solving the “water leakage drawback” aforesaid, some diaphragm pump manufacturers introduce an improved model as shown in
FIGS. 11 and 12 . Basing on the conventional diaphragm pump disclosed in the previous paragraph of “BACKGROUND OF THE INVENTION” in association with (FIGS. 1 through 6 ), the improved model of diaphragm pump comprises same components as those components in the prior art of Taiwan Patent 095122820 except following alteration that the originalouter rim ridge 22 with atop surface 223 and an outerlateral surface 224 in thediaphragm 20 is altered into anouter rim ridge 22 a with increasing the height thereof, and the originaltiered cavity 54 in the pumpupper hood 50 is altered into asimple cavity 56 without tiered brim but having ahorizontal bottom surface 561 and an innervertical wall 562 thereof, wherein, the height for the outerlateral surface 224 of theouter rim ridge 22 a almost equals that for thevertical wall 562 of thesimple cavity 56 so that thetop surface 223 of theouter rim ridge 22 a on thediaphragm 20 is flush with thetop surface 61 of the sealingcollar gasket 60 and closely attach on thehorizontal bottom surface 561 of thesimple cavity 56, whereas the outerlateral surface 224 of theouter rim ridge 22 a just closely attach the innervertical wall 562 of thesimple cavity 56 when the stacked entity of thediaphragm 20,piston valve 40 and sealingcollar gasket 60 is inset in thesimple cavity 56 of the pump upper hood 50 (as the partially enlarged view shown inFIG. 12 ). Through our practical life test under normal weather condition for certain time, a gap G is still formed between thehorizontal bottom surface 561 of thesimple cavity 56 and thetop surface 61 of the sealingcollar gasket 60, which has been thinned by continuously pumping impact (as shown inFIG. 13 ), so that the “water leakage drawback” can not really solved because the water hammer Wg affected tap water W, which is come from thewater input orifice 52 of the pumpupper hood 50, still firstly flows into the gap G between thehorizontal bottom surface 561 of thesimple cavity 56 and thetop surface 61 of the sealing collar gasket 60 (as shown in FIG. 13) and then flows into the space between the pumpupper hood 50 andupper hood chassis 11 to leak out via the clearanceδ created between the outerlateral surface 224 ofouter rim ridge 22 a on thediaphragm 20 and thevertical wall 562 of thesimple cavity 56. - The foregoing facts described reflect that the altered conventional diaphragm pump provides a false illusion that whose new product seemingly appears in no “water leakage drawback” manner in the beginning stage but with failure in practical life test under normal weather condition. Inferentially, the “water leakage drawback” in the altered conventional diaphragm pump aforesaid will be getting worse under adverse weather condition such as tropical or frigid zones due to drastic hot-expansion and cold-shrink effect as well as expedited aging effect happening in the sealing
collar gasket 60. Inevitably, the altered conventional diaphragm pump aforesaid has always to be replaced due to malfunction before the guarantee expiry. Thus, not only the goodwill is harmfully affected but also the overall cost in fabrication and fringe cost in maintenance are increased. Therefore, how to work out an effective and simple way to solve the “water leakage drawback” in the conventional diaphragm pumps becomes a critical issue to deal with urgently. - After having addressing and deeply studied the forgoing “water leakage drawback” happened in the conventional diaphragm pimp, an effective and simple solving means is eventually worked out by the applicant of the present invention via painstaking research and development. Therefore, the primary object of the present invention is to provide a leakage-proof contrivance for upper hood of diaphragm pump by modifying the original vertical wall of the internal lower tiered brim in the tiered cavity of the conventional pump upper hood into a sloped wall; Thus, when stacked assembly of sealing collar gasket, piston valve and diaphragm is inset into the tiered cavity of the pump upper hood in closely attachment manner, the outer lateral surface of the sealing collar gasket will immediately cause a horizontal force incurred by the sloped wall of the lower tiered brim in the tiered cavity; Meanwhile, by the confinement from the circumferential surface of the orientating ridge on the piston valve, the sealing collar gasket will be slantwise squeezed and vertically deformed to produce normal outwards stress in both upwards and downwards manners. By both normal outwards stresses of upwards and downwards manners, when the sealing collar gasket is interposed between the pump upper hood and piston valve, the top surface and bottom surface of the sealing collar gasket can respectively inset in the tiered cavity of the pump upper hood and the piston base of the piston valve in much more closely attachment manner to block and prevent the pressurized water from leaking out of the diaphragm pump.
- The other object of the present invention is to provide a leakage-proof contrivance for upper hood of diaphragm pump by modifying the original simple cavity with a horizontal bottom surface and an inner vertical wall of the conventional pump upper hood into a simple cavity with a sloped wall in addition to the horizontal bottom surface and an inner vertical wall thereof such that one edge of the sloped wall abuts with the horizontal bottom surface while the other edge of the sloped wall abuts with the vertical wall respectively; Thus, when stacked assembly of sealing collar gasket, piston valve and diaphragm is inset into the tiered cavity of the pump upper hood in closely attachment manner, the top surface and outer lateral surface near the top surface will be suffered a compressing confinement from the sloped wall of the simple cavity so that the outer lateral surface of the sealing collar gasket will be indirectly affected and immediately incurred to cause a horizontal force; Meanwhile, by the confinement from the circumferential surface of the orientating ridge on the piston valve, the sealing collar gasket will be slantwise squeezed and vertically deformed to produce normal outwards stress in both upwards and downwards manners. By both normal outwards stresses of upwards and downwards manners, when the sealing collar gasket is interposed between the pump upper hood and piston valve, the top surface and bottom surface of the sealing collar gasket can respectively inset in the simple cavity of the pump upper hood and the piston base of the piston valve in much more closely attachment manner to block and prevent the pressurized water from leaking out of the diaphragm pump.
-
FIG. 1 is a exploded perspective view showing the conventional diaphragm pump of the prior art. -
FIG. 2 is a sectional view showing the conventional diaphragm pump of the prior art. -
FIG. 3 is a assembly perspective view of the conventional diaphragm pump. -
FIG. 4 is a sectional view taken along the line 4-4 of theFIG. 3 . -
FIG. 5 is a sectional view taken along the line 5-5 of theFIG. 3 . -
FIG. 6 is a sectional view showing the pumping operation of the conventional diaphragm pump. -
FIG. 7 is a sectional schematic view showing the sealing collar gasket suffered from normal stress between pump upper hood and piston valve during pumping operation of the conventional diaphragm pump. -
FIG. 8 is a sectional schematic view showing the sealing collar gasket deformed to strain after having been suffered from normal stress between pump upper hood and piston valve during pumping operation of the conventional diaphragm pump. -
FIG. 9 is a partially enlarged view taken from the left corner A of theFIG. 6 . -
FIG. 10 is a partially enlarged view taken from the right corner B of theFIG. 6 . -
FIG. 11 is a sectional schematic view for another type of the conventional diaphragm pump. -
FIG. 12 is a sectional assembly view for another type of the conventional diaphragm pump. -
FIG. 13 is a partially enlarged view taken from the right corner C of theFIG. 12 . -
FIG. 14 is a sectional schematic view showing the exploded components for the first exemplary embodiment of the present invention. -
FIG. 15 is a sectional schematic view showing the assembled components for the first exemplary embodiment of the present invention. -
FIG. 16 is a partially enlarged view taken from the right corner D of theFIG. 15 . -
FIG. 17 is a sectional schematic view showing the exploded components for the second exemplary embodiment of the present invention. -
FIG. 18 is a sectional schematic view showing the assembled components for the second exemplary embodiment of the present invention. -
FIG. 19 is a partially enlarged view taken from the right corner E of theFIG. 18 . - Please refer to
FIGS. 14 through 16 , which show the first exemplary embodiment for the “leakage-proof contrivance for upper hood of diaphragm pump” of the present invention. Basing on the conventional diaphragm pump disclosed in the previous paragraph of “BACKGROUND OF THE INVENTION” in association with (FIGS. 1 through 6 ), the present invention comprises same components as those components in the prior art of Taiwan Patent 095122820 except following modification that the originalvertical wall 543 of the internal lowertiered brim 541 in thetiered cavity 54 of the conventional pumpupper hood 50 is modified into a sloped wall 547 (as the partially enlarged view shown inFIG. 14 ). The structural advantage in the pumping operation for the first exemplary embodiment of the “leakage-proof contrivance for upper hood of diaphragm pump” in the present invention can be manifested as below: Firstly, stack thepiston valve 40 over thediaphragm 20 in assembled manner; Secondly, sleeve the sealingcollar gasket 60 over the rimtop surface 403 of thepiston base 401 on thepiston valve 40 to have both of the sealingcollar gasket 60 andpiston valve 40 withdiaphragm 20 become a preliminary integral entity; and Finally, inset the preliminary integral entity of the sealingcollar gasket 60 andpiston valve 40 withdiaphragm 20 into thetiered cavity 54 of the pumpupper hood 50 in closely attachment manner to become a final integral entity (as shown inFIG. 15 ). At this moment, the outerlateral surface 63 of the sealingcollar gasket 60 will immediately cause a horizontal force Fh incurred by thesloped wall 547 of the lowertiered brim 541 in the tiered cavity 54 (as arrowhead shown inFIG. 16 ); Meanwhile, by the confinement from thecircumferential surface 48 of theorientating ridge 47 on thepiston valve 40, the sealingcollar gasket 60 will be slantwise squeezed and vertically deformed to produce normal outwards stress F in both upwards and downwards manners (as half-solid arrowhead shown inFIG. 16 ). By both normal outwards stresses F of upwards and downwards manners, when the sealingcollar gasket 60 is interposed between the pumpupper hood 50 andpiston valve 40, thetop surface 61 andbottom surface 62 of the sealingcollar gasket 60 can respectively inset in thetiered cavity 54 of the pumpupper hood 50 and thepiston base 401 of thepiston valve 40 in much more closely attachment manner to block and prevent the pressurized water Wp from leaking out of the diaphragm pump. - Referring to
FIGS. 17 to 19 , which show the second exemplary embodiment for the “leakage-proof contrivance for upper hood of diaphragm pump” of the present invention. Basing on the improved model of the conventional diaphragm pump disclosed in the previous paragraph of “BACKGROUND OF THE INVENTION” in association with (FIGS. 11 and 12 ), the present invention comprises same components as those components in the prior art of the improved model aforesaid except following modification that the original simple cavity 56 with a horizontal bottom surface 571 and an inner vertical wall 572 of the conventional pump upper hood 50 is modified into a simple cavity 57 with a sloped wall 573 in addition to a horizontal bottom surface 571 and an inner vertical wall 572 thereof such that one edge of the sloped wall 573 abuts with the horizontal bottom surface 571 while the other edge of the sloped wall 573 abuts with the vertical wall 572 respectively; Besides, the original outer rim ridge 22 with a top surface 223 and an outer lateral surface 224 in the diaphragm 20 is modified into an outer rim ridge 22 a with increasing the height thereof such that the height for the outer lateral surface 224 of the outer rim ridge 22 a is slightly less than that for the vertical wall 572 of the simple cavity 57 so that the space encompassed by the horizontal bottom surface 571 and vertical wall 572 of the simple cavity 57 is just big enough to accommodate the top surface 223 and outer lateral surface 224 of the outer rim ridge 22 a on the diaphragm 20 to closely attach therein. - The structural advantage in the pumping operation for the second exemplary embodiment of the “leakage-proof contrivance for upper hood of diaphragm pump” in the present invention can be manifested as below: Firstly, stack the
piston valve 40 over thediaphragm 20 in assembled manner; Secondly, sleeve the sealingcollar gasket 60 over the rimtop surface 403 of thepiston base 401 on thepiston valve 40 to have both of the sealingcollar gasket 60 andpiston valve 40 withdiaphragm 20 become a preliminary integral entity; and Finally, inset the preliminary integral entity of the sealingcollar gasket 60 andpiston valve 40 withdiaphragm 20 into thesimple cavity 57 of the pumpupper hood 50 in closely attachment manner to become a final integral entity (as shown inFIG. 18 ). At this moment, thetop surface 223 and outerlateral surface 224 near thetop surface 223 will be suffered a compressing confinement from the slopedwall 573 of thesimple cavity 57 so that the outerlateral surface 63 of the sealingcollar gasket 60 will be indirectly affected and immediately incurred to cause a horizontal force Fh (as arrowhead shown inFIG. 19 ); Meanwhile, by the confinement from thecircumferential surface 48 of the orientatingridge 47 on thepiston valve 40, the sealingcollar gasket 60 will be slantwise squeezed and vertically deformed to produce normal outwards stress F in both upwards and downwards manners (as half-solid arrowhead shown inFIG. 19 ). Likewise, as in the first exemplary embodiment, by both normal outwards stresses F of upwards and downwards manners, when the sealingcollar gasket 60 is interposed between the pumpupper hood 50 andpiston valve 40, thetop surface 61 andbottom surface 62 of the sealingcollar gasket 60 can respectively inset in thesimple cavity 57 of the pumpupper hood 50 and thepiston base 401 of thepiston valve 40 in much more closely attachment manner to block and prevent the pressurized water Wp from leaking out of the diaphragm pump. - Basing on the disclosure heretofore and experimental test, the applicant of the present invention proves that the present invention surely solve the “water leakage drawback” issue without any bad side-effect after practical life test, which has valuable industrial applicability. Especially, the solving scenario contrived by the present invention is simple with innovative novelty beyond the obviousness of the prior arts, which meet the basic patentable criterion.
Claims (2)
1. A leakage-proof contrivance for upper hood of diaphragm pump comprises a motor with an output shaft, an upper hood chassis with plural screw bores disposed at peripheral thereof, three wobble roundels with each threaded bores therein, a diaphragm, three piston pumping disks with three tiered bores and three screws, a piston valve on a piston base, a pump upper hood with plural perforated holes disposed at bottom peripheral thereof, a sealing collar gasket, an anti-backflow plastic pad and three valvular roundels as well as plural bolts; wherein
Said diaphragm, which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by an inner ring ridge and an outer rim ridge with outer lateral surface and a top surface, includes an annular sealing groove beset by the inner ring ridge and outer rim ridge, three evenly disposed radial ridged ribs, three evenly distributed piston pumping zones and three hollow shafts, wherein each said piston pumping zone is defined by two flanked adjacent radial ridged ribs and corresponding arc section of the inner ring ridge; and each said hollow shaft is disposed in each piston pumping zone with location relatively corresponding with each threaded bore in each wobble roundel, and Each said piston pumping disk is securely fixed in each corresponding piston pumping zones of the diaphragm respectively by each screw running through each corresponding tiered bore thereof;
Said piston valve, which is integrally molded on a piston base of angles-rounded triangular form with three orientating ridges to be securely positioned on the diaphragm, basically includes a central water discharge mount and three peripheral water inlet mounts, wherein said piston base, which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by an annular sealing ridge to beset in the corresponding annular sealing groove of the diaphragm, has a rim top surface over the annular sealing ridge; said water discharge mount, which is bowl-shaped profile disposed on the central top of the piston valve, has a central orientating hole and three grouped water discharge openings evenly distributed in three equivalent sectors; each said water inlet mount, which is integrally molded in partial-cut round shape in upside-down bowl-shaped profile in circumjacent contact the central water discharge mount, has a central orientating hole and plural water inlet vents evenly distributed in surrounding manner therein; each said orientating ridge, which is formed along the footing tangent line circumscribed both adjacent water inlet mounts, has an tangent surface;
Said anti-backflow plastic pad, which is made of soft elastic material with a top clover-like disk of plano-convex profile in divided three-leaved shape, has a central orientating pin downwardly disposed beneath the top disk so that the orientating pin can be inserted into the orientating hole in the water discharge mount of the piston valve with the three-leaved top disk thereof closely attach over three grouped water discharge openings in respective three sector;
Each said valvular roundels, which is made of soft elastic material with a top disk of plano-convex profile, has a central orientating pin upwardly disposed on the top disk so that the orientating pin can be inserted into the orientating hole in each corresponding water inlet mount with the top disk closely attach and block all water inlet vent in each corresponding water inlet mount so that a preliminary low-pressured chamber is created between each valvular roundel and each corresponding piston pumping disk with one connection end of the low-pressured chamber being inter-fluent with the water discharge openings in each corresponding water discharge mount;
Said pump upper hood, which is a hollow body with bottom open, has a water input orifice and a water output orifice respectively disposed on each opposed top peripheral thereof as well as plural perforated holes disposed at bottom peripheral thereof; wherein an inner tiered cavity internally including an internal lower tiered brim with a horizontal bottom surface and a vertical wall as well as an upper tiered brim with a horizontal bottom surface and a vertical wall is inwardly created from the opening side of the pump upper hood; an innermost annular pit is outwardly created from the internal top wall of the pump upper hood so that the horizontal bottom surface and vertical wall of the lower tiered brim can closely attach the top surface and outer lateral surface of the sealing collar gasket in match manner while the horizontal bottom surface and vertical wall of the upper tiered brim can closely attach the top surface and outer lateral surface for the outer rim ridge of the diaphragm in match manner; and an intensive high-pressured chamber is created by the internal space encompassed by the inner wall of the annular pit and the top surface of the water discharge mount in the piston valve when the bottom rim surface of the annular pit closely attach the upper rim surface of the water discharge mount in the piston valve;
Said sealing collar gasket, which is made of soft material in roughly angles-rounded triangular form, has a top surface, a bottom surface and an outer lateral surface; and
Said leakage-proof contrivance for upper hood of diaphragm pump is characterized in that the vertical wall of the internal lower tiered brim in the tiered cavity of the pump upper hood is modified into a sloped wall.
2. A leakage-proof contrivance for upper hood of diaphragm pump comprises a motor with an output shaft, an upper hood chassis with plural screw bores disposed at peripheral thereof, three wobble roundels with each threaded bores therein, a diaphragm, three piston pumping disks with three tiered bores and three screws, a piston valve on a piston base, a pump upper hood with plural perforated holes disposed at bottom peripheral thereof, a sealing collar gasket, an anti-backflow plastic pad and three valvular roundels as well as plural bolts; wherein
Said diaphragm, which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by an inner ring ridge and an outer rim ridge with outer lateral surface and a top surface, includes an annular sealing groove beset by the inner ring ridge and outer rim ridge, three evenly disposed radial ridged ribs, three evenly distributed piston pumping zones and three hollow shafts, wherein each said piston pumping zone is defined by two flanked adjacent radial ridged ribs and corresponding arc section of the inner ring ridge; and each said hollow shaft is disposed in each piston pumping zone with location relatively corresponding with each threaded bore in each wobble roundel; and Each said piston pumping disk is securely fixed in each corresponding piston pumping zones of the diaphragm respectively by each screw running through each corresponding tiered bore thereof;
Said piston valve, which is integrally molded on a piston base of angles-rounded triangular form with three orientating ridges to be securely positioned on the diaphragm, basically includes a central water discharge mount and three peripheral water inlet mounts, wherein said piston base, which is basically a triangle but all three angle tips are respectively rounded and entirely surrounded by an annular sealing ridge to beset in the corresponding annular sealing groove of the diaphragm, has a rim top surface over the annular sealing ridge; said water discharge mount, which is bowl-shaped profile disposed on the central top of the piston valve, has a central orientating hole and three grouped water discharge openings evenly distributed in three equivalent sectors; each said water inlet mount, which is integrally molded in partial-cut round shape in upside-down bowl-shaped profile in circumjacent contact the central water discharge mount, has a central orientating hole and plural water inlet vents evenly distributed in surrounding manner therein; each said orientating ridge, which is formed along the footing tangent line circumscribed both adjacent water inlet mounts, has an tangent surface;
Said anti-backflow plastic pad, which is made of soft elastic material with a top clover-like disk of piano-convex profile in divided three-leaved shape, has a central orientating pin downwardly disposed beneath the top disk so that the orientating pin can be inserted into the orientating hole in the water discharge mount of the piston valve with the three-leaved top disk thereof closely attach over three grouped water discharge openings in respective three sector;
Each said valvular roundels, which is made of soft elastic material with a top disk of plano-convex profile, has a central orientating pin upwardly disposed on the top disk so that the orientating pin can be inserted into the orientating hole in each corresponding water inlet mount with the top disk closely attach and block all water inlet vent in each corresponding water inlet mount so that a preliminary low-pressured chamber is created between each valvular roundel and each corresponding piston pumping disk with one connection end of the low-pressured chamber being inter-fluent with the water discharge openings in each corresponding water discharge mount;
Said pump upper hood, which is a hollow body with bottom open, has a water input orifice and a water output orifice respectively disposed on each opposed top peripheral thereof as well as plural perforated holes disposed at bottom peripheral thereof; wherein an inner simple cavity without tiered brim but having a horizontal bottom surface and an inner vertical wall is inwardly created from the opening side of the pump upper hood such that the height of the vertical wall in the simple cavity is slightly higher than the height of the outer lateral surface for the outer rim ridge so that the space encompassed by the horizontal bottom surface and vertical wall of the simple cavity is just big enough to accommodate the top surface and outer lateral surface of the outer rim ridge on the diaphragm to closely attach therein; an innermost annular pit is outwardly created from the internal top wall of the pump upper hood; and an intensive high-pressured chamber is created by the internal space encompassed by the inner wall of the annular pit and the top surface of the water discharge mount in the piston valve when the bottom rim surface of the annular pit closely attach the upper rim surface of the water discharge mount in the piston valve; and
Said sealing collar gasket, which is made of soft material in roughly angles-rounded triangular form, has a top surface, a bottom surface and an outer lateral surface;
Said leakage-proof contrivance for upper hood of diaphragm pump is characterized in that said simple cavity of the pump upper hood is modified into a simple cavity with a sloped wall in addition to the horizontal bottom surface and an inner vertical wall thereof such that one edge of the sloped wall abuts with the horizontal bottom surface while the other edge of the sloped wall abuts with the vertical wall respectively.
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US12/585,417 US20100068082A1 (en) | 2008-09-17 | 2009-09-15 | Leakage-Proof Contrivance for Upper Hood of Diaphragm Pump |
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US12/585,417 US20100068082A1 (en) | 2008-09-17 | 2009-09-15 | Leakage-Proof Contrivance for Upper Hood of Diaphragm Pump |
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Cited By (17)
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US9845799B2 (en) | 2012-11-20 | 2017-12-19 | Flow Control LLC | Sealed diaphragm pump |
WO2015108686A1 (en) * | 2014-01-16 | 2015-07-23 | Chen, Chung-Chin | Vibration-reducing method for compressing diaphragm pump |
WO2015179265A1 (en) * | 2014-05-20 | 2015-11-26 | Chen, Chung-Chin | Four-compression-chamber diaphragm pump with multiple effects |
GB2527910A (en) * | 2014-05-20 | 2016-01-06 | Ying Lin Cai | Eccentric roundel structure for compressing diaphragm pump with multiple effects |
US20150337819A1 (en) * | 2014-05-20 | 2015-11-26 | Ying Lin Cai | Roundel structure for five-compressing-chamber diaphragm pump |
WO2015179087A1 (en) * | 2014-05-20 | 2015-11-26 | Chen, Chung-Chin | Eccentric roundel structure for compressing diaphragm pump with multiple effects |
US20150337818A1 (en) * | 2014-05-20 | 2015-11-26 | Ying Lin Cai | Vibration-reducing structure for five-compressing-chamber diaphragm pump |
US9989046B2 (en) * | 2014-05-20 | 2018-06-05 | Ying Lin Cai | Roundel structure for five-compressing-chamber diaphragm pump |
GB2527657A (en) * | 2014-05-20 | 2015-12-30 | Ying Lin Cai | Roundel structure for four-compression-chamber diaphragm pump with multiple effects |
WO2015179121A1 (en) * | 2014-05-20 | 2015-11-26 | Chen, Chung-Chin | Roundel structure for four-compression-chamber diaphragm pump with multiple effects |
GB2527912A (en) * | 2014-05-20 | 2016-01-06 | Ying Lin Cai | Vibration-reducing structure for four-compression-chamber diaphragm pump |
GB2527912B (en) * | 2014-05-20 | 2017-06-14 | Lin Cai Ying | Four-compression-chamber diaphragm pump with vibration reducing positioning projections |
GB2527910B (en) * | 2014-05-20 | 2018-05-23 | Lin Cai Ying | Eccentric roundel structure for compressing diaphragm pump with vibration reducing structures |
CN105041272A (en) * | 2015-07-29 | 2015-11-11 | 安东石油技术(集团)有限公司 | Sand control simulation experiment tank |
CN105179211A (en) * | 2015-08-25 | 2015-12-23 | 李喆 | Reinforced sealing structure for working water cavity of reverse osmosis booster pump |
CN109372740A (en) * | 2018-11-16 | 2019-02-22 | 佛山华永科技有限公司 | A kind of pumping water device with sealing structure |
CN113586461A (en) * | 2021-08-23 | 2021-11-02 | 安徽智泓净化科技股份有限公司 | Self-priming pump with sealing mechanism |
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