CN103256409A

CN103256409A - Check valve assembly and pump and water purifying device using same

Info

Publication number: CN103256409A
Application number: CN2012100342298A
Authority: CN
Inventors: 浦坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-15
Filing date: 2012-02-15
Publication date: 2013-08-21
Anticipated expiration: 2032-02-15
Also published as: CN103256409B; WO2013120400A1

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 the pump and the water purification installation that use 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 for pump the check valve assembly that uses in the plunger pump that especially in water purification installation, uses, and water purification installation.

Background technique

Normally used one-way valve comprises and has valve body, spool and return mechanism (spring).When the hydrodynamic pressure in the water transport channel reaches or greater than preset pressure the time, this pressure overcome return mechanism (spring) elastic force and with spool jack-up from the valve seat of valve body, thereby make the water transport channel conducting; When the pressure of fluid in the water transport channel less than the elastic force of return mechanism (spring) time, spool is crushed on the sealing surface of valve seat, thereby water transport channel is sealed with contacting of valve seat by spool.

For example Chinese patent discloses a kind of one-way valve No. 200920066543.3, 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 valve body outlet passageway outside.

For hand pump, plunger type hand pump especially, it has one or two plunger pump usually, by up and down or left and right swing fork the piston in the plunger pump is moved back and forth, thereby produces press water.Each plunger pump is respectively arranged with one-way valve at its intake tunnel and exhalant canal, to be used for water inlet and the water outlet of this plunger pump.Each one-way valve is provided with return mechanism separately usually.

For example, Chinese patent the 200920142335.1st discloses a kind of duplex one-way valve group, it comprises valve seat 7, be provided with two transverse passageway in the valve seat 7, and two cavitys communicate, the upper end of cavity is filler opening, valve seat 6 is arranged in the cavity, be provided with guiding valve 4 in the valve seat 6, stage clip 3 is arranged in the guiding valve 4, the end of stage clip is provided with gland 2.Though this patent is assembled in two one-way valves in the valve body, owing to be interconnected between two one-way valves, so it is still only to single water transport channel effect, and be provided with independent spring in each one-way valve.

Therefore, existing one-way valve all is each independent action, is separately positioned among the water transport channel separately, and contact and branch are not arranged each other.

For portable water purifying equipment, it generally includes the filter core with the effect of purifying waste water, and has the filter membrane of handling for the water that needs is carried out purified treatment in the filter core.After the water that need carry out purified treatment enters filter core, must have certain pressure and can make water molecule from the water of high ion concentration, pass filter membrane to move to the direction of the fresh water of low ion concns.Therefore to the water that needs carry out purified treatment be pressurizeed usually.And in portable water purifying equipment, generally use hand pump as the power of pressurization.In the prior art, pump commonly used in the portable water purifying equipment is plunger pump.

For this water purification installation can effectively be worked, need apply very high pressure to filter core.For example be used under the situation of purifying sea water, this pressure is usually up to more than the 50kg/cm2.

In another patent ZL 201020567282.0 of the inventor, a kind of water desalination treatment device is disclosed.Wherein, the high pressure water of hand piston pump generation is discharged by being arranged on two one-way valves in the exhalant canal separately.

Because portable water purifying equipment is very strict to the requirement of volume and weight, therefore need reduce the volume and weight of equipment as much as possible, it is little in light weight and product that quality is high is the important issue that the artificer faces therefore how to design volume.

Summary of the invention

In view of the shortcoming of above-mentioned prior art, technical problem to be solved by this invention provides a kind of check valve assembly with novel structure, and it has little, the lightweight characteristics of volume.

The present invention also is devoted to provide a kind of water purification installation 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 comprise first valve seat and second valve seat; The first passage that communicates with first valve seat; The second channel that communicates with second valve seat; Be installed in first spool on first valve seat; Be installed in second spool on second valve seat; This check valve assembly further comprises: pendulum, this pendulum are positioned at described first spool and second spool top, can be installed in pivotally between first spool and second spool with respect to valve seat.

According to a second aspect of the invention, described pendulum is installed on the valve seat by bearing pin.

According to a third aspect of the invention we, the pendulum equal in length of described bearing pin both sides.

According to a forth aspect of the invention, the lower surface of described pendulum is apart from the upper surface 0.3-1mm of spool.

According to a fifth aspect of the invention, described first spool and second spool are the cylindrical body of spheroid, centrum or dribbling shape or taper head end.

According to a sixth aspect of the invention, described pendulum is arranged in the groove of the end face that is opened in valve seat.

According to a seventh aspect of the invention, the pendulum equal in length of described bearing pin both sides, described first spool and second spool are the cylindrical body of spheroid, centrum or dribbling shape or taper head end, described pendulum is arranged in the groove of the end face that is opened in valve seat.

According to an eighth aspect of the invention, described check valve assembly uses on plunger pump.

The present invention also provides a kind of pump, it comprise of the present invention first to the eight aspect any described check valve assembly.

The present invention also provides a kind of water purification installation, and it comprises pump, this pump comprise of the present invention first to the eight aspect any described check valve assembly.

Water purification installation of the present invention includes but not limited to seawater (comprising pained salt water, salt buck) 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 improved structure, thus the part count parts are reduced, and saved 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 that makes things convenient for quick pressure releasing.

Be used from the embodiment that principle of the present invention is described below by Figure of description and with accompanying drawing one, other features and advantages of the present invention will become clear or more specifically be illustrated.

Description of drawings

Fig. 1 is the schematic representation of the check valve assembly of expression exemplary embodiment of the present, and wherein first exhalant canal is opened, and second exhalant canal is closed.

Fig. 2 is the schematic representation of another state of check valve assembly of representing among Fig. 1, and wherein second exhalant canal is opened, and first exhalant canal is closed.

Fig. 3 is the schematic representation of another state of check valve assembly of representing among Fig. 1, and wherein first and second spools all are in not compacted state.

Fig. 4 is the schematic representation that is combined with the pump housing of check valve assembly of the present invention.

Fig. 5 is the schematic representation that has in conjunction with the water purification installation of the pump housing of check valve assembly of the present invention.

Critical piece explanation in the accompanying drawing:

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 elaborated.

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 pendulum 8.

Wherein water transport channel 4 and spool 6 constitute an one-way valve; And water transport channel 5 and spool 7 constitute the another one one-way valve.The return mechanism that pendulum 8 shares as two one-way valves.Two one-way valves are realized interlock with a pendulum 8 auxiliary switchings by discharge pressure, make the pump housing in use realize the action of water inlet and outlet.Wherein also communicate with the passage (not shown) that is used for water inlet in the water transport channel 4 and 5, when piston moved upward, the passage of this water inlet was closed.

Structure and effect to concrete each parts is elaborated below.

Have valve seat 2,3 on the valve seat 1, spool 6 and 7 is installed on the valve seat 2,3.By valve seat 2,3 with spool 6 and 7 between engage and the fluids of carrying from water transport channel 4,5 sealed.

Valve body 1 arranges on the pump housing in the present embodiment, however valve body can be arranged on any parts, for example on the cylinder body of cylinder, the first-class parts of cylinder.Valve body can be selected for use but be not limited to stainless steel, titanium alloy, aluminum alloy, engineering plastics etc.; Its manufacture method can be selected for use but be not limited to casting, die casting, injection moulding, machining etc.

By the end face at valve body a groove is set, and the chamber that forms one-way valve and hold pendulum 8.Wherein the lower end of groove 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 shown in is the exhalant canal of plunger pump in the embodiment of the present application.

Spool 6 and 7 can be the cylindrical body of spheroid, cone or dribbling shape or taper head end, also can be spool shape commonly used in related domain.The water inlet and outlet one-way valve designs adopts the cone match that arranges on ball pearl and the valve seat to realize opening and closing in the present embodiment.Its material can be selected for use 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, the preferred glass pearl.

Pendulum 8 is plate-shaped member, is installed in the top of spool 6 and 7, is provided with bearing pin 9 in the centre of pendulum 8, and this bearing pin 9 passes the hole on the pendulum 8.Therefore by this bearing pin 9, pendulum 8 is pivotably mounted on the valve body 1.Be that pendulum 8 can rotate in the scope of bearing pin 9 at groove.

Though; a bearing pin shown in the embodiment of the application Fig. 1-3; pendulum can be mounted to the structure that pivots with respect to valve body all in the scope of protection of the invention but other are any; for example can be provided with axle and at valve seat the hole is set by pendulum; this axle is inserted in this hole, also can reach the effect that pendulum is pivoted.

Gap between pendulum 8 and the spool 6,7 can be 0.1-1mm, and concrete size can be adjusted according to the water-outlet quantity of pump and the diameter of piston; If for example the diameter of piston is little or stroke is little (water displacement is few), it is smaller that this gap can arrange; Otherwise, the big or stroke big (water displacement is big) of the diameter of pump, it is bigger that this gap can arrange.Be 10mm for diameter for example, be used for the plunger pump of purifying sea water, the gap between pendulum and the valve body can be set to 0.3mm.

Among the embodiment who illustrates 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 lefts equates basically, so the power of pendulum 8 both sides effect equates basically.In fact, this pendulum is a similar seesaw structure, and the pressure of the water by piston action is realized the opening and closing control to two one-way valves.

Though the length of these pendulum 8 both sides equates basically in the present embodiment; But the length of these both sides also can be unequal.

Though the present invention combines the embodiment of the check valve assembly with two water transport channel and is illustrated, the present invention can also be used for the water transport channel of other even numbers, for example 4,6 or 8 water transport channel.It also can be used for the pump of other types, and is not limited to plunger pump.

Check valve assembly of the present invention not only can be used for the delivery side of pump passage also can be used for inlet passage; Principle and the structure when being arranged on outlet passage is identical basically to be arranged on principle and structure on the inlet passage.

The certain situation that regards to down when this check valve assembly is applied to the portable water purification device describes.

The portable water purification device in use, the pressure that its hand pump produces is very big, when being used for seawater cleaning, can reach 50 kg/cm.Therefore in the time of withdraw from service, wish to keep so high pressure in the water purification installation, because when people take action with the water purification installation with high pressure like this, can have the hidden danger on the safety.Therefore, wish to make in the water purification installation pressure can pressure release rapidly after stopping to suppress.

When check valve assembly of the present invention was used for purification plant, the claimant was surprisingly found out that, owing to use this check valve assembly, the pressure in the filter core can 5-10 pressure release rapidly in second after stopping to suppress.

According to the inventor structure of the present invention is discovered, because water is incompressible material basically, therefore in filter core, filled with under the situation of water, also can produce very big pressure even squeeze into very a spot of water.After hand pump stopped to suppress, because two plunger pumps all no longer produce pressure, therefore the power that acts on the pendulum was in state of equilibrium, and namely pendulum is in the equilibrium position shown in Fig. 3, neither pushes down first valve body and does not also push down second valve body.Two valve bodies can break away from the sealing surface of valve seat under the effect of water, and press water is from the gap earial drainage between spool and the sealing surface, thereby make pressure pressure release rapidly in the filter core.

Describe 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 uses on the hand piston pump of water purification installation.This water purification installation comprises two plunger pumps, first plunger pump 12 and second plunger pump 13.

As shown in Figure 1, when depressing handle 11, under the effect of fork 10, the first piston 14 of first plunger pump 12 moves upward and water in the compression piston, and water pressure is wherein raise.Owing to second plunger pump 13 moves down the into water state that is under the drive of fork 10, pressure is lower than first plunger pump 12.Therefore, pendulum 8 is subjected to coming from the power of first piston 14 and from the power on second piston 15, and the power that comes from first piston 14 is greater than from the power on second piston 15; Pendulum 8 is by first spool, 6 jack-up of first plunger pump 12, and presses to second spool 7 of second plunger pump 13; The exhalant canal of first plunger pump 12 is owing to moving up of spool 6 opened, thereby makes the exhalant canal conducting, and press water enters into filter core by first plunger pump 12; The exhalant canal of second plunger pump 13 is pressed on the valve seat 3 by pendulum 8 owing to spool 7, and second plunger pump, 13 exhalant canals are closed.

As shown in Figure 2, in the time of lifting handle 11, under the effect of fork 10, second piston 15 of second plunger pump 13 moves upward and water in the compression piston, and water pressure is wherein raise.Therefore, pendulum 8 is pressed to first spool 6 of first plunger pump 12 by second spool, 7 jack-up of second plunger pump 13, so the exhalant canal of second plunger pump 13 is owing to moving up of spool 7 opened, thereby make the exhalant canal conducting, press water enters into filter core by second plunger pump 13; And the exhalant canal of first plunger pump 12 is pressed on the valve seat 2 by pendulum 8 owing to spool 6, and first plunger pump, 12 exhalant canals are closed.

As shown in Figure 3, when the setting-out action time that stops handle 11, two plunger pumps 12,13 do not produce pressure, thereby make the pressure that acts on the pendulum 8 reach balance.At this moment, pendulum 8 is in and two spools 6,7 discontiguous position all, namely is not pressed in the position on any one spool, under the effect of water, spool 6,7 and valve seat 2,3 break away from, and make water pressure release in the filter core.

The portable water purification device that has been 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 housing part, 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 housing part and rear end off-load blowdown partly with being threaded.

The pump housing partly includes into water and goes out water one-way valve, plunger pump, fork and handle.Drive handle and plunger pump is moved back and forth suck water to be clean by shaking fork, and the pump housing is discharged in this water pressurization back, 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 is owing to use pendulum to replace the elastic member that is separately positioned on usually in each one-way valve, thereby reduced number of components, the volume and weight of saving.And when stopping to suppress, pump no longer produces pressure, and the power that acts on the pendulum is in state of equilibrium, and press water is from the gap earial drainage between valve body and the sealing surface, thereby makes pressure pressure release rapidly in the filter core, guarantees the safe handling of hand pump.

By reference to the accompanying drawings the present invention has been carried out exemplary description above; obvious specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technological scheme to carry out; perhaps without improving design of the present invention and technological scheme are directly applied to other occasions, all within protection scope of the present invention.

Claims

1. check valve assembly comprises:

Valve body, this valve body comprise first valve seat and second valve seat;

The first passage that communicates with first valve seat;

The second channel that communicates with second valve seat;

Be installed in first spool on first valve seat;

Be installed in second spool on second valve seat;

It is characterized in that: this check valve assembly further comprises:

Pendulum, this pendulum are positioned at described first spool and second spool top, can be installed in pivotally between first spool and second spool with respect to valve seat.

2. check valve assembly according to claim 1, it is characterized in that: described pendulum is installed on the valve seat by bearing pin.

3. check valve assembly according to claim 2 is characterized in that: the pendulum equal in length of described bearing pin both sides.

4. check valve assembly according to claim 1 and 2, it is characterized in that: the lower surface of described pendulum is apart from the upper surface 0.3-1mm of spool.

5. check valve assembly according to claim 1 is characterized in that: described first spool and second spool are the cylindrical body of spheroid, centrum or dribbling shape or taper head end.

6. check valve assembly according to claim 1, it is characterized in that: described pendulum is arranged in the groove of the end face that is opened in valve seat.

7. check valve assembly according to claim 4, it is characterized in that: the pendulum equal in length of described bearing pin both sides, described first spool and second spool are the cylindrical body of spheroid, centrum or dribbling shape or taper head end, and described pendulum is arranged in the groove of the end face that is opened in valve seat.

8. check valve assembly according to claim 1 is characterized in that: described check valve assembly uses on plunger pump.

9. pump, it comprises each described check valve assembly among the claim 1-8.

10. water purification installation, it comprises pump, this pump comprises each described check valve assembly among the claim 1-8.