CN103256409B - Check valve assembly and pump and water purifying device using same - Google Patents

Check valve assembly and pump and water purifying device using same Download PDF

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Publication number
CN103256409B
CN103256409B CN201210034229.8A CN201210034229A CN103256409B CN 103256409 B CN103256409 B CN 103256409B CN 201210034229 A CN201210034229 A CN 201210034229A CN 103256409 B CN103256409 B CN 103256409B
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CN
China
Prior art keywords
check valve
spool
valve assembly
valve seat
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201210034229.8A
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Chinese (zh)
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CN103256409A (en
Inventor
浦坚
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201210034229.8A priority Critical patent/CN103256409B/en
Priority to PCT/CN2013/070197 priority patent/WO2013120400A1/en
Publication of CN103256409A publication Critical patent/CN103256409A/en
Application granted granted Critical
Publication of CN103256409B publication Critical patent/CN103256409B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/1002Ball valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/1002Ball valves
    • F04B53/101Ball valves having means for limiting the opening height
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/1002Ball valves
    • F04B53/101Ball valves having means for limiting the opening height
    • F04B53/1012Ball valves having means for limiting the opening height and means for controlling the opening height
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/1087Valve seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/02Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14Pumps characterised by muscle-power operation

Abstract

The invention relates to a check valve assembly and a pump and a water purifying device using the same. The check valve assembly comprises a valve body including a first valve seat and a second valve seat, a first channel communicated with the first valve seat, a second channel communicated with the second valve seat, a first valve core installed on the first valve seat and a second valve core installed on the second valve seat. The check valve assembly is characterized by further comprising a swaying piece located above the first valve core and the second valve core and capable of being installed between the first valve core and the second valve core in the way that the swaying piece can rotate relative to the valve seat in a pivot mode. The pump and the water purifying device using the assembly are provided. Due to the fact that the structure of the check valve assembly is improved, the number of parts is reduced, and the size and the weight are reduced. Further, the check valve assembly is flexible and quick to operate and capable of reducing unnecessary seepage.

Description

Check valve assembly and use pump and the water purification installation of this assembly
Technical field
The present invention relates to a kind of one-way valve, be specifically related to check valve assembly.The invention still further relates to in pump, the check valve assembly used in the plunger pump especially used in water purification installation, and water purification installation.
Background technique
Normally used one-way valve comprises with valve body, spool and return mechanism (spring).When the hydrodynamic pressure in water transport channel reaches or is greater than preset pressure time, this pressure overcomes the elastic force of return mechanism (spring) and by spool from jack-up the valve seat of valve body, thus makes water transport channel conducting; When the pressure of fluid in water transport channel is less than the elastic force of return mechanism (spring) time, spool is crushed on the sealing surface of valve seat, thus is sealed water transport channel by the contact of spool and valve seat.
Such as No. 200920066543.3rd, Chinese patent discloses a kind of one-way valve, and wherein valve body comprises gas-entered passageway and outlet passageway, and spool is connected by spring with valve core case, and valve core case is fixed on outside valve body outlet passageway.
For hand pump, especially hand plunger pump, it has one or two plunger pump usually, swings fork and the piston in plunger pump is moved back and forth by up and down or left and right, thus produces press water.Each plunger pump is respectively arranged with one-way valve on its intake tunnel and exhalant canal, for water inlet and the water outlet of this plunger pump.Each one-way valve is provided with respective return mechanism usually.
Such as, Chinese patent the 200920142335.1st discloses a kind of double linked one-way valve group, it comprises valve seat 7, be provided with two transverse passageway in valve seat 7, and two cavitys communicate, the upper end of cavity is filler opening, valve seat 6 is had in cavity, be provided with guiding valve 4 in valve seat 6, have stage clip 3 in guiding valve 4, the end of stage clip is provided with gland 2.Although two one-way valves are assembled in a valve body by this patent, owing to being interconnected between two one-way valves, therefore it is still only to single water transport channel effect, and is provided with independent spring in each one-way valve.
Therefore, existing one-way valve is all each independent action, is separately positioned among respective water transport channel, does not contact each other and be provided separately.
For portable water purifying equipment, it generally includes the filter core with the effect of purifying waste water, and has for the filter membrane needing the water carrying out purified treatment to process in filter core.After needing the water carrying out purified treatment to enter filter core, certain pressure must be had water molecule can be made to move to the direction of the fresh water of low ion concns through filter membrane from the water of high ion concentration.Therefore usually to pressurize to needing the water carrying out purified treatment.And in portable water purifying equipment, the general hand pump that uses is as the power of pressurization.In prior art, pump conventional in portable water purifying equipment is plunger pump.
In order to enable this water purification installation effectively work, need to apply very high pressure to filter core.Such as when for purifying sea water, this pressure is usually up to more than 50kg/cm2.
In another patent ZL 201020567282.0 of the present inventor, disclose a kind of water desalination treatment device.Wherein, the high pressure water that hand piston pump produces is discharged by the one-way valve be arranged on separately in two exhalant canals.
Because portable water purifying equipment is very strict to the requirement of volume and weight, therefore need the volume and weight reducing equipment as much as possible, therefore how to design small in volume and the high product of quality is the important issue that artificer faces.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, technical problem to be solved by this invention is to provide a kind of check valve assembly with novel structure, and it has little, the lightweight feature of volume.
The present invention is also devoted to the water purification installation providing a kind of novelty.
In order to achieve the above object, according to a first aspect of the invention, the invention provides a kind of check valve assembly, comprising: valve body, this valve body comprises the first valve seat and the second valve seat; The first passage communicated with the first valve seat; The second channel communicated with the second valve seat; Be arranged on the first spool on the first valve seat; Be arranged on the second spool on the second valve seat; This check valve assembly comprises further: pendulum, and this pendulum is positioned at above described first spool and the second spool, can be pivotally mounted between the first spool and the second spool relative to valve seat.
According to a second aspect of the invention, described pendulum is arranged on valve seat by bearing pin.
According to a third aspect of the invention we, the pendulum length of described bearing pin both sides is equal.
According to a forth aspect of the invention, the upper surface 0.3-1mm of the lower surface distance spool of described pendulum.
According to a fifth aspect of the invention, described first spool and the second spool are the cylindrical body of spheroid, centrum or spherical or taper head end.
According to a sixth aspect of the invention, described pendulum is arranged in the groove of the end face being opened in valve seat.
According to a seventh aspect of the invention, the pendulum length of described bearing pin both sides is equal, and described first spool and the second spool are the cylindrical body of spheroid, centrum or spherical or taper head end, and described pendulum is arranged in the groove of the end face being opened in valve seat.
According to an eighth aspect of the invention, described check valve assembly is used on plunger pump.
The present invention also provides a kind of pump, and it comprises the check valve assembly in the first to eight aspect of the present invention described in any one.
The present invention also provides a kind of water purification installation, and it comprises pump, and this pump comprises the check valve assembly in the first to eight aspect of the present invention described in any one.
Water purification installation of the present invention includes but not limited to seawater (comprising pained salt water, saline-alkali water) desalting plant, water filtration treatment device etc.
The beneficial effect of check valve assembly of the present invention, pump and water purification installation is: owing to improving structure, thus part count parts are reduced, and saves volume and weight.And this check valve assembly flexible operation is quick, can reduce unnecessary seepage.
Check valve assembly of the present invention can also reach the effect of fast and easy pressure release.
Below by Figure of description and together with accompanying drawing for illustration of the embodiment of principle of the present invention, other features and advantages of the present invention will become clear or more specifically be illustrated.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the check valve assembly representing exemplary embodiment of the present, and wherein the first exhalant canal is opened, and the second exhalant canal is closed.
Fig. 2 is the schematic diagram of another state of check valve assembly represented in Fig. 1, and wherein the second exhalant canal is opened, and the first exhalant canal is closed.
Fig. 3 is the schematic diagram of another state of check valve assembly represented in Fig. 1, and wherein the first and second spools are all in not compacted state.
Fig. 4 is the schematic diagram of the pump housing being combined with check valve assembly of the present invention.
Fig. 5 is the schematic diagram of the water purification installation with the pump housing in conjunction with check valve assembly of the present invention.
In accompanying drawing, critical piece illustrates:
Valve body 1; Valve seat 2,3;
Water transport channel 4,5; Spool 6,7;
Pendulum 8; Pivot 9;
Fork 10; Handle 11;
Plunger pump 12,13; Piston 14,15;
A: handle; B: water intake;
C: the pump housing; D: the connecting sleeve of the pump housing and film pipe
E: film pipe and filter core; F: rear end off-load blowdown valve seat and connecting sleeve;
G: fresh water mouth; H: strong sewage mouth.
Embodiment
Below in conjunction with accompanying drawing 1-3, check valve assembly of the present invention is described in detail.
Fig. 1-3 shows check valve assembly of the present invention.This check valve assembly comprises valve body 1, two water transport channel 4 and 5, two spools 6 and 7 and pendulums 8.
Wherein water transport channel 4 and spool 6 form an one-way valve; And water transport channel 5 and spool 7 form another one one-way valve.The return mechanism that pendulum 8 shares as two one-way valves.Two one-way valves pendulum 8 assists opening and closing, realizes interlock, make the pump housing in use realize the action of water inlet and outlet by discharge pressure.Wherein also communicate with the passage (not shown) for intaking in water transport channel 4 and 5, when piston upwards, the passage of this water inlet is closed.
Below the structure of concrete all parts and effect are described in detail.
With valve seat 2,3 on valve seat 1, spool 6 and 7 is arranged on valve seat 2,3.By the joint between valve seat 2,3 and spool 6 and 7, the fluid carried from water transport channel 4,5 is sealed.
Valve body 1 is arranged on the pump housing in the present embodiment, but valve body can be arranged on any parts, such as, on the first-class parts of the cylinder body of cylinder, cylinder.Valve body can be selected but be not limited to stainless steel, titanium alloy, aluminum alloy, engineering plastics etc.; Its manufacture method can be selected but be not limited to casting, die casting, injection moulding, machining etc.
By arranging a groove at the end face of valve body, and form one-way valve and hold the chamber of pendulum 8.The lower end of its middle slot communicates with two water transport channel 4,5, and the other end is connected to water outlet.Certainly, this groove also can be positioned at valve inner as required, and is not limited only to end face.
Water transport channel 4,5 can be intake tunnel, also can be exhalant canal, and the water transport channel is in the embodiment of the present application the exhalant canal of plunger pump.
Spool 6 and 7 can be the cylindrical body of spheroid, cone or spherical or taper head end, also can be spool shape conventional in related domain.In the present embodiment, water inlet and outlet one-way valve designs adopts the cone match that ball pearl and valve seat are arranged to realize opening and closing.Its material can be selected but be not limited to stainless shot, ceramic bead, plastic bead, glass bead.For sea-water purifying device, consider burn into machining accuracy and manufacture cost, preferred glass pearl.
Pendulum 8 is plate-shaped member, is arranged on the top of spool 6 and 7, the centre of pendulum 8 is provided with bearing pin 9, and this bearing pin 9 is through the hole on pendulum 8.Therefore by this bearing pin 9, pendulum 8 is pivotably mounted on valve body 1.Namely pendulum 8 can rotate in the scope of groove around bearing pin 9.
Although; shown in the embodiment of the application Fig. 1-3 one bearing pin; but other are any can be mounted to structure relative to valve body pivotable all in the scope of protection of the invention by pendulum; such as can be provided with axle on pendulum and in valve seat providing holes; this axle is inserted in this hole, also can reach the effect making pendulum pivotable.
Gap between pendulum 8 and spool 6,7 can be 0.1-1mm, and concrete size can adjust according to the diameter of the water-outlet quantity of pump and piston; If the diameter of such as piston is little or stroke is little (water displacement is few), it is smaller that this gap can be arranged; Otherwise the large or stroke of the diameter of pump large (water displacement is large), it is larger that this gap can be arranged.Be such as 10mm for diameter, for the plunger pump of purifying sea water, the gap between pendulum and valve body can be set to 0.3mm.
In the embodiment shown in the drawings, bearing pin 9 is positioned at the neutral position of pendulum 8, and namely the pendulum length of bearing pin 9 the right and left is substantially equal, and therefore the power of pendulum 8 both sides effect is substantially equal.In fact, this pendulum is a similar seesaw structure, realizes controlling the opening and closing of two one-way valves by the pressure of the water of piston action.
Although the length of these pendulum 8 both sides is substantially equal in the present embodiment; But the length of these both sides also can be unequal.
Although the embodiment that present invention incorporates the check valve assembly with two water transport channel is illustrated, the present invention can also be used for the water transport channel of other even numbers, such as 4,6 or 8 water transport channel.It also may be used for the pump of other types, and is not limited to plunger pump.
Check valve assembly of the present invention not only may be used for delivery side of pump passage and also may be used for inlet passage; The Principles and methods be arranged on inlet passage is substantially identical with Principles and methods when being arranged on outlet passage.
Under the certain situation regarded to when this check valve assembly being applied to portable water purification device be described.
In use, the pressure that its hand pump produces is very large, in for seawater cleaning, can reach 50 kg/cm for portable water purification device.Therefore wish when withdraw from service not keep so high pressure in water purification installation, because when people take action with the water purification installation with high pressure like this time, the hidden danger in safety can be had.Therefore, it is desirable to enable pressure in water purification installation can pressure release rapidly after stopping is suppressed.
When check valve assembly of the present invention is used for purification plant, claimant is surprisingly found out that, owing to using this check valve assembly, the pressure in filter core can pressure release rapidly in 5-10 second after stopping is suppressed.
Carry out research according to inventor to structure of the present invention to find, because water is incompressible material substantially, when therefore filling water in filter core, even if the water squeezing into seldom amount also can produce very large pressure.After hand pump stops suppressing, because two plunger pumps all no longer produce pressure, the power therefore acted on pendulum is in state of equilibrium, and namely pendulum is in the equilibrium position shown in Fig. 3, neither pushes down the first valve body and does not also push down the second valve body.Two valve bodies can depart from the sealing surface of valve seat under the effect of water, and press water from the gap earial drainage between spool and sealing surface, thus makes pressure pressure release rapidly in filter core.
Be described below in conjunction with the operation of accompanying drawing to check valve assembly of the present invention.
As Figure 1-3, check valve assembly of the present invention is used on the hand piston pump of water purification installation.This water purification installation comprises two plunger pumps, the first plunger pump 12 and the second plunger pump 13.
As shown in Figure 1, in time depressing handle 11, under the effect of fork 10, the first piston 14 of the first plunger pump 12 moves upward and water in compression piston, and water pressure is wherein raised.Be in into water state because the second plunger pump 13 moves down under the drive of fork 10, pressure is lower than the first plunger pump 12.Therefore, pendulum 8 be subject to coming from first piston 14 power and from the power on the second piston 15, and the power coming from first piston 14 is greater than from the power on the second piston 15; Pendulum 8 by the first spool 6 jack-up of the first plunger pump 12, and presses to the second spool 7 of the second plunger pump 13; The exhalant canal of the first plunger pump 12 is opened due to moving up of spool 6, thus makes exhalant canal conducting, and press water enters into filter core by the first plunger pump 12; The exhalant canal of the second plunger pump 13 is pressed on valve seat 3 by pendulum 8 due to spool 7, and the second plunger pump 13 exhalant canal is closed.
As shown in Figure 2, when lifting handle 11 time, under the effect of fork 10, the second piston 15 of the second plunger pump 13 moves upward and water in compression piston, and water pressure is wherein raised.Therefore, pendulum 8 is pressed to the first spool 6 of the first plunger pump 12 by the second spool 7 jack-up of the second plunger pump 13, so the exhalant canal of the second plunger pump 13 is opened due to moving up of spool 7, thus make exhalant canal conducting, press water enters into filter core by the second plunger pump 13; And the exhalant canal of the first plunger pump 12 is pressed on valve seat 2 by pendulum 8 due to spool 6, and the first plunger pump 12 exhalant canal is closed.
As shown in Figure 3, in time stopping the setting-out action of handle 11, two plunger pumps 12,13 do not produce pressure, thus make the pressure acted on pendulum 8 reach balance.At this moment, pendulum 8 is in position all discontiguous with two spools 6,7, is not namely pressed in the position on any one spool, and under the effect of water, spool 6,7 and valve seat 2,3 depart from, and make water pressure release in filter core.
The portable water purification device being equipped with check valve assembly of the present invention is described below in conjunction with Fig. 5.
This portable water purification device includes front end pump body portion, intermediate coat pipe and filter core part and rear end off-load blowdown part.Intermediate coat pipe and filter core part respectively with front end pump body portion and rear end off-load blowdown part with being threaded.
Pump body portion includes into water and goes out water one-way valve, plunger pump, fork and handle.Suck water to be clean by shake fork with active handle makes plunger pump move back and forth, and discharge the pump housing after being pressurizeed by this water, enter into intermediate coat pipe and filter core part.
In intermediate coat pipe and film core filter core part, water to be clean generates satisfactory fresh water by reverse osmosis, and unnecessary strong sewage is discharged to rear end off-load blowdown part.
In rear end off-load blowdown part, fresh water is discharged from fresh water pipe, and strong sewage is discharged from sewage pipe.
The present invention replaces owing to using pendulum the elastic member be usually separately positioned in each one-way valve, thus decreases number of components, the volume and weight of saving.And in time stopping suppressing, pump no longer produces pressure, and the power acted on pendulum is in state of equilibrium, and press water from the gap earial drainage between valve body and sealing surface, thus makes pressure pressure release rapidly in filter core, ensures the safe handling of hand pump.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technological scheme is carried out; or design of the present invention and technological scheme directly applied to other occasions, all within protection scope of the present invention without to improve.

Claims (10)

1. a check valve assembly, comprising:
Valve body, this valve body comprises the first valve seat and the second valve seat;
The first passage communicated with the first valve seat;
The second channel communicated with the second valve seat;
Be arranged on the first spool on the first valve seat;
Be arranged on the second spool on the second valve seat;
It is characterized in that: this check valve assembly comprises further:
Pendulum, this pendulum is positioned at above described first spool and the second spool, can be pivotally mounted between the first spool and the second spool relative to valve seat.
2. check valve assembly according to claim 1, is characterized in that: described pendulum is arranged on valve seat by bearing pin.
3. check valve assembly according to claim 2, is characterized in that: the pendulum length of described bearing pin both sides is equal.
4. check valve assembly according to claim 1 and 2, is characterized in that: the upper surface 0.3-1mm of the lower surface distance spool of described pendulum.
5. check valve assembly according to claim 1, is characterized in that: described first spool and the second spool are the cylindrical body of spheroid, centrum or spherical or taper head end.
6. check valve assembly according to claim 1, is characterized in that: described pendulum is arranged in the groove of the end face being opened in valve seat.
7. check valve assembly according to claim 4, it is characterized in that: the pendulum length of described bearing pin both sides is equal, described first spool and the second spool are the cylindrical body of spheroid, centrum or spherical or taper head end, and described pendulum is arranged in the groove of the end face being opened in valve seat.
8. check valve assembly according to claim 1, is characterized in that: described check valve assembly is used on plunger pump.
9. a pump, it comprises the check valve assembly according to any one of claim 1-8.
10. a water purification installation, it comprises pump, and this pump comprises the check valve assembly according to any one of claim 1-8.
CN201210034229.8A 2012-02-15 2012-02-15 Check valve assembly and pump and water purifying device using same Expired - Fee Related CN103256409B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201210034229.8A CN103256409B (en) 2012-02-15 2012-02-15 Check valve assembly and pump and water purifying device using same
PCT/CN2013/070197 WO2013120400A1 (en) 2012-02-15 2013-01-08 Check valve assembly, and pump and water purification device using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210034229.8A CN103256409B (en) 2012-02-15 2012-02-15 Check valve assembly and pump and water purifying device using same

Publications (2)

Publication Number Publication Date
CN103256409A CN103256409A (en) 2013-08-21
CN103256409B true CN103256409B (en) 2015-01-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (2)

Country Link
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WO (1) WO2013120400A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108266371A (en) * 2018-02-01 2018-07-10 佛山市优霸机械设备有限公司 A kind of moving seesaw-type threeway metering valve of metering pump
CN108691738A (en) * 2018-08-21 2018-10-23 许尚志 Compound two-way manual hydraulic pump

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Publication number Priority date Publication date Assignee Title
CA1118365A (en) * 1977-03-28 1982-02-16 Bowie G. Keefer Reverse osmosis method and apparatus
DE8127508U1 (en) * 1981-09-19 1982-02-11 Elektro-Thermit Gmbh, 4300 Essen MANUAL HYDRAULIC PUMP
CN2068601U (en) * 1990-04-28 1991-01-02 王益民 Double-piston wobble pump
CN2085429U (en) * 1991-01-29 1991-09-25 冯加林 Reciprocating hand high pressure pump with dual-cylinders
CN2361872Y (en) * 1998-12-30 2000-02-02 童辉 Hand plunger pump
JP2003293945A (en) * 2002-04-02 2003-10-15 Taiyo Parts Kk Manual pressurizer
TW200921019A (en) * 2007-11-12 2009-05-16 Seven Universe Ind Co Ltd Multiple-inlet fuel gas regulator
TW201031845A (en) * 2008-05-16 2010-09-01 Graco Minnesota Inc Hose manifold with integrated filtration and shut-off check valves
CN101839227B (en) * 2010-04-30 2012-07-04 浦坚 Pump and portable water purifying equipment
CN201850183U (en) * 2010-10-11 2011-06-01 浦坚 Water desalination processing device
CN202756193U (en) * 2012-02-15 2013-02-27 浦坚 Plunger pump and water purification device therewith
CN202484370U (en) * 2012-02-15 2012-10-10 浦坚 Check valve assembly and pump and water purification device using check valve assembly

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CN103256409A (en) 2013-08-21

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