CN101578238A - Gravity-fed water purification apparatus with venturi dosing device - Google Patents
Gravity-fed water purification apparatus with venturi dosing device Download PDFInfo
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- CN101578238A CN101578238A CNA2007800496908A CN200780049690A CN101578238A CN 101578238 A CN101578238 A CN 101578238A CN A2007800496908 A CNA2007800496908 A CN A2007800496908A CN 200780049690 A CN200780049690 A CN 200780049690A CN 101578238 A CN101578238 A CN 101578238A
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Abstract
The present invention relates to a gravity fed water purification device having controlled dosing of liquid biocide for providing safe and hygienic water for potable purposes. It is an object of the present invention to provide for a system for dispensing liquid biocide solutions in to water to be purified in a gravity fed water purification device, especially a device that provides large dilution ratio consistently over long time, without any electrically controlled devices. The invention provides a gravity-fed water purification device comprising a biocide dosing passagecomprising a venturianda by-pass passage wherein the cross- sectional area of the by-pass passage is greater than the cross-sectional area of the constricted zone of the venturi.
Description
Technical field
The present invention relates to a kind of gravity fed water purification device, have the liquid biocide of controlled dosage, so that the tap water of safety and sanitation to be provided.
Background technology
Along with the arrival of intense industrialization society and the increase of whole world population, the availability of the human safe drinking water that consumes is just becoming an important problem.Immoderate industrialization brings the required raising of many level of comforts aspect thereupon, but side effect is that the ecosystem is produced serious pressure.A kind of pressure is to clean contaminated water source such as the Ru Jing that is generally used for drinking purpose, river, river and lake.These water not only are subjected to the pollution of chemical preparations, and are subjected to polluting from the harmful microbe of these industrial and agricultural wastes.
Along with water is purified the understanding that needs, in the past few decades, several water treatment technologies have been developed and commercialization.One class of these technology is to purify at the water of aspect, city, and another kind of be to be used for single family.In rural area and semi-urban area, almost without any municipal water treatment systems.In city with municipal water treatment systems, water from municipal water treatment plant to single family pipeline by during be subjected to part easily and pollute.Therefore, need use water-purification plant in the family.The traditional method of purifying waste water is to boil, but this method is because the soaring of the cost of the fuel of boil water or electricity just beginning to become expensive.Have many for example based on other device that safe drinking water can be provided of uviolizing or reverse osmosis.It has the defective that needs electric power and tap water to move these devices.In many rural areas and developing country, often can not get the successive supply of electric power.Frequent handy kettle of people or bucket are collected water from well or public water tap, so the tap water in the kitchen also is not easy to obtain.Thereby the water-purification plant that a class is upgraded has been designed to operation under the situation that does not have electric power and tap water but still safe drinking water can be provided.
In the device that is commonly called gravity apparatus of these types, realize kill microorganisms by in water, adding biocide.Biocide can be solid, liquid or gas form.The example of solid biocides has Losantin, Surchlor GR 60 and trichlorocyanuric acid etc.Ozone and chlorine are the examples of gaseous biocides.The advantage of solid biocides is to reach required dosage levels in the water that the biocide of weighed quantity can be added in batch.But the solid biocides of accurately measuring to semi-continuous water purification system dispensings such as for example gravity apparatus is very very difficult, and water flows to the lower chambers of purification from inlet upper chamber in gravity apparatus.Gaseous biocides has it and be not easy to the defective of storing in family's purification system.
Liquid biocide comprises clorox, iodine, quaternary ammonium compound and glutaraldehyde.In as semicontinuous systems such as gravity-fed water purification systems, it is contemplated that the dispensing liquid biocide is most convenient and is easy to.For the technical scale cleaner of picture, be so really usually in city treatment plant.For family's cleaner, use liquid biocide just to have some problems.In order to ensure the home devices compactness, the volume of biocide chamber must be little, this means the liquid biocide solution that must use high density.The dosage of killing livestock that kill microorganisms is required approximately is the order of magnitude at ppm usually, promptly 0.0001% and more than.If add too much biocide, then before the people uses, need other devices to remove biocide, otherwise can produce bad taste and smell, and can be deleterious during high density very much.The amount of therefore strict control biocide is very important.
A necessary requirement in this semicontinuous system is to be used for the controllably automatic matching device of dispensing liquid biocide.Automatic matching device is a kind of amount of the liquid biocide of guaranteeing dispensing and the proportional device of amount of the water that will purify, and this must realize under the controller for electric consumption available situation not having.A kind of very simple static mechanical device of having used in the past is a Venturi meter.
Venturi meter is the simple assembly that comprises pipe, and this pipe has the constriction that is connected in the fluid supply of wanting dispensing.When water flows through pipe and when flowing through constriction, because the increase of the speed of the water that current form through constriction causes the decline in the certainty of this partial pressure.The decline of this pressure is used for wanting the suction of the liquid of dispensing.When well-designed, the amount of the water of ration and flowing pipe is proportional.
Several prior art document descriptions the application of this principle in a kind of liquid dosage of automatic mixing in mobile second liquid flow.WO20060109736 has described the mixing dispenser apparatus, is used for cleaning solute and solvent and dispensing, and this device comprises the hybrid bottle with opening; Mixing dispenser apparatus comprises body and removably is attached at lid on the described opening, this lid has Venturi meter, Venturi meter is formed by tubular member basically, the mixing of solute and solvent takes place in tubular member, this device is characterised in that to have radial hole on tubular member, ratio between this radial hole decision solute and the solvent, and lid has the openable gas inlet that is formed at wherein.This invention is at the mixing of cleaning fluid and water, wherein thinning ratio, accuracy and reproducibility are not very high as a result, and do not have high sufficient to guarantee and satisfy temporal consistence the strictness control of the biocide concentration that is used for the gravity-fed water purification system.
EP0736483B1 (1998) has described a kind of enriched material dispenser apparatus of fruit juice dispenser, and wherein fruit juice concentrates and water conservancy use the device according to venturi principle work to mix, and dispenser apparatus has: refrigeration plant; The two-stage detector is used for controlling the low level and the high position of distributor box; Vacuum actuated valve, it blows into air to transport the enriched material part in the pipeline, and this vacuum actuated valve exists detector to start by the enriched material that concentrates in the property management.Though this device comprises Venturi meter, it moves under electric power to realize a large amount of controlled function, and device of the present invention does not need these controlled function.
Venturi meter also is used to carry in the device of biocide.US6272879B1 (2001) described a kind of be used to cool off with sterilized container in the liquid-cooling system of liquid, comprising: bracing frame; Attach to the refrigerating unit of bracing frame; Liquid guiding device, it comprises the input section that is used for from container input liquid, cooling section and refrigerative liquid is returned the liquid return phase of container that this circulation utilizes pumping unit to realize; Be connected in the liquid sterilisation apparatus of liquid guiding device, comprise the Venturi meter that distributes sterilant; And filtration unit, be used for circulation is kept here through any unwanted solids of liquid of liquid guiding device.The disclosure thing at be to storing and use the sterilization of the container of water coolant.The mobile pump that utilizes of liquid is controlled, and therefore can control to higher degree exactly.Therefore, utilize the reproducibility of Venturi meter suction and pumping biocide highly to predict.This is not the situation of gravity-fed water purification of the present invention system, and according to the height of user's water-filling in upper chamber, the flow velocity of water can change in wide region in gravity-fed water purification of the present invention system.The biocide delivery system must be constructed to be permeable to carry the accurately biocide of amount under the underlying condition of these variations in this case.
US2004/0055969 has described a kind of water treatment system and method, comprises the mixing equipment that receives ozone, and chemical ingredients and the polluted water of utilizing Venturi meter to distribute form mixture with oxidation and sterilized water, thereby kill algae.This system has been made into high-caliber flow of ozone and chemical ingredients.The creativeness of this patent application is with ozone and the water sepn separator with the ozone that circulates effectively.Therefore the flow velocity of water also is to utilize pump to control subtly in this system, is easier to control the chemical ingredients that is used for sterilized water of utilizing that Venturi meter draws.And, this system be generally used for purifying, clarify and stable swimming pool, mineral spring health resort, hot tub or other recycle system in water, the control in these places for biocide concentration is so strict unlike what potable water system was required.
Therefore, above the solution of the prior art particular problem all not describing gravity fed water purification device and faced, promptly utilize Venturi meter accurate and reproduction ground control biocide concentration under the situation of bigger thinning ratio, this Venturi meter leads to large water tank to provide ppm level other biocide from the little biocide chamber that the biocide with high density is imported solution to the water that will purify.The solution that these requirements dual and opposition need be found the accuracy of the higher degree of guaranteeing the biocide dispensing and satisfy this requirement based on temporal consistence.The inventor has found the solution of this problem, thereby is configured to most of defective that particular structure overcomes the allocating system of prior art by the biocide dispenser apparatus that will have Venturi meter in the gravity fed water purification device.
Goal of the invention
Therefore the purpose of this invention is to provide a kind of in gravity fed water purification device in the water that will purify the system of distributing liquid biocide solution.
Another object of the present invention provide a kind of in gravity fed water purification device in water the system of distributing liquid biocide solution, it can as one man provide big thinning ratio for a long time.
A further object of the present invention provide a kind of in water the system of distributing liquid biocide solution, wherein current and biocide stream does not utilize any controller for electric consumption to control.
Summary of the invention
The invention provides a kind of gravity fed water purification device, comprise
(a) upper chamber, by (i) comprise the biocide dispensing passage of Venturi meter and (ii) by-pass channel be communicated with the lower chambers fluid, wherein, the sectional area of described by-pass channel is greater than the sectional area of the shrinking zone of Venturi meter;
(b) described biocide dispensing passage is communicated with the biocide container fluid that comprises liquid biocide;
So that be transfused to a part of water of upper chamber, pass described biocide dispensing passage, and pass described Venturi meter, make biocide be inhaled into described Venturi meter, and a part of water pass described by-pass channel to collect described bottom chamber from upper chamber.
Preferably, described device comprises the siphon pipe that is arranged on before the described Venturi meter and is communicated with its fluid.Siphonal existence provides the almost fixed flow velocity through the water of described Venturi meter.
Detailed description of the present invention
The present invention relates to be used for the water-purification plant of single family.It is configured to meet household safe tap water demand with low cost.It does not need power supply and tap water.It wherein needs to add to the upper chamber of water-purification plant the water of aequum with batch processing mode or the operation of half batch processing mode.The present invention more preferably is 1 to 50 liter for top chamber volumes common operational excellence in 1 to 100 liter of scope.
The essential characteristic of this device is by at least two channel attached upper chamber and lower chambers.A basic passage from the upper chamber to the lower chambers is called biocide dispensing passage, and it comprises Venturi meter.This device comprises at least one other passage from the upper chamber to the lower chambers, and it is a by-pass channel.
According to device of the present invention, can have an above by-pass channel.When a by-pass channel is only arranged, to compare with the sectional area of the shrinking zone of Venturi meter, it has bigger sectional area.When having an above by-pass channel, to compare with the sectional area of the shrinking zone of Venturi meter, at least one by-pass channel has bigger sectional area.Such requirement is proposed, guarantee strictness control on the one hand to biocide concentration in the lower chambers, in the lower chambers biocide concentration from the input liquid biocide begin to calculate by weight common requirement in 5/1000000ths to 100/1000000ths scope, the liquid biocide of input usually in water concentration be to obtain in 0.01 to 50 weight percentage ranges.On the other hand, provide by-pass channel to guarantee from upper chamber flows to the water of lower chambers, to have enough turbulivitys and therefore can make liquid biocide and water carry out quick and mix reliably in bottom chamber.The ratio of the sectional area of by-pass channel and the sectional area of Venturi meter shrinking zone preferably in 1.2: 1 to 400: 1 scope, more preferably, in 2: 1 to 50: 1 scope.
The sectional area of by-pass channel means the sectional area of narrow part of by-pass channel.For the passage that has as regular cross sections such as circular, oval, square or rectangles, long-pending at the length upper section of passage is substantially uniformly.For the passage with irregular section, the sectional area of narrow part is defined as the sectional area of passage.
Utilize the Venturi meter that is fit to, the biocide dispensing is in the water of the biocide dispensing passage of flowing through.Biocide is stored in the biocide container, and biocide container is usually less than the Venturi meter setting, and promptly liquid biocide overcomes gravity and drunk up by venturi action.In the present invention, Venturi meter preferably is arranged on the biocide container top 0.1-10 centimetre position.The amount that is drunk up the liquid biocide in the water that enters the liquid biocide passage of flowing through depends on the flow velocity of the water of process biocide dispensing passage.Provide at least one by-pass channel to guarantee to use dense liquid biocide.Thereby this makes to have the possibility that is designed to that little biocide container is guaranteed overall compact.The present invention also guarantees and needn't too continually liquid biocide be refilled in the liquid biocide container.
Can be used for the aqueous solution that the liquid biocide that is fit in the device of the present invention comprises clorox, Surchlor GR 60, iodine, quaternary ammonium compound or glutaraldehyde.Most preferred liquid biocide is an aqueous sodium hypochlorite solution.When liquid biocide that clorox is to use, it is with the concentration in the scope of 0.01 to 50 weight percent in water, more preferably is that the concentration in the scope of 1 to 20 weight percent in water adds biocide container.Utilize device of the present invention, the concentration that can obtain biocide in the lower chambers for weight percent in water in the 0.5-100ppm scope, more preferably in water weight percent in the 1-50ppm scope.
Water before row advances lower chambers from the biocide dispensing passage Venturi meter of flowing through.
Venturi meter is fluid or airflow have the pipe of contraction flow region in it a device.The principle of Venturi meter knows better, and can utilize bernoulli principle to come computational dynamics usually.In Venturi meter, fluid quickens at contraction flow region, thereby and reduces its pressure in this zone generation partial vacuum.Venturi-effect has been used for many application.Wherein most importantly by measuring the device of measuring fluid velocity in the pressure change of the different sections of device.Venturi-effect also is used for the science demonstration of aircraft wing lift.
The excessive sectional area in shrinking zone can be created in the risk of carrying bubble in the Venturi meter secretly, thereby causes accuracy to reduce.Preferred narrow relatively Venturi meter shrinking zone.Therefore, preferred Venturi meter makes the ratio of sectional area and the sectional area of Venturi meter shrinking zone of input field of biocide dispensing passage in 1.5: 1 to 100: 1 scope, more preferably in 1.5: 1 to 50: 1 scope in the device of the present invention.
The outlet of by-pass channel preferably is arranged to when water flows into lower chambers, and guaranteeing has high turbulivity in the water.This usually can be by guaranteeing to provide enough height to produce between the outlet of the top of lower chambers and by-pass channel.Perhaps can divider be set in the outlet of by-pass channel.
Except the ratio of inlet with the cross section of Venturi meter shrinking zone, and the above-mentioned effect of bypass and the ratio in the cross section of Venturi meter shrinking zone, the biocide dispensing also is subjected to the cross section of biocide suction passage and the influence of the ratio in the cross section of Venturi meter shrinking zone.If compare with biocide suction passage, the shrinking zone of Venturi meter is too wide, and the pressure that reduces so can not provide biocide dispensing accurately.On the other hand, if biocide suction passage is too narrow, the pipe friction (speed that depends on biocide) that is subjected to of the biocide in the biocide suction passage also may cause inaccurate dispensing so.Therefore, preferably, the ratio of the sectional area of Venturi meter and the sectional area of biocide suction passage is between 2: 1 to 20: 1 scopes.
Usually, in gravity fed water purification device, the water of input was filtered the removal particulate contaminant before utilizing the biocide processing.In the present invention, fixedly be, when device does not comprise siphon chamber and siphon pipe, device the strainer of removing particulate matter be arranged on biocide dispensing in water after the time, better properties is provided.On the other hand, when device comprises that when having siphonal siphon chamber, preferably, strainer is arranged on before the siphon chamber, so that water is relatively removed particulate matter, packing etc. before entering siphon chamber.The strainer that is fit to is that those comprise carbon, or the type of being made by fabric or its binding substances.Fabric filter can be made by yarn fabric or nonwoven fabric, is preferably made by nonwoven fabric.The fabric that is fit to is made by polyester or polypropylene.
The present invention now describes with reference to non-limiting exemplary embodiment.
Description of drawings
Fig. 1 is the synoptic diagram according to the embodiment of gravity fed water purification device of the present invention;
Fig. 2 is a C enlarged view partly shown in Figure 1, has represented to have the biocide dispensing passage of Venturi meter and the relative dimension of by-pass channel;
Fig. 3 is according to the synoptic diagram of another embodiment of gravity fed water purification device of the present invention, and it comprises siphon pipe;
Fig. 4 is a D enlarged view partly shown in Figure 3, shows siphon pipe and Venturi meter;
Fig. 5 is for when utilizing the embodiment of Fig. 3, and the ration of chlorine is with respect to the diagram of time.
Embodiment
With reference to accompanying drawing, Fig. 1 is gravity fed water purification device of the present invention (WPD).Water-purification plant comprises upper chamber (TC) and lower chambers (BC).Upper chamber links to each other by two passages that be arranged in parallel with lower chambers, that is: biocide dispensing passage (BDP) and by-pass channel (BPP).Biocide dispensing passage had Venturi meter (V) before leading to lower chambers.Venturi meter (V) is connected in to compare with Venturi meter (V) by biocide suction passage (BSP) and is positioned at more the next biocide container (BCC).Lower chambers (BC) has the strainer of being made by the mylar of spiral winding (F).Strainer leads to collecting chamber (CC).
Fig. 2 shows the enlarged view of the C part shown in Fig. 1.Fig. 2 represents to have the relative configurations and the size of the biocide dispensing passage and the by-pass channel of Venturi meter.As shown in the figure, two channel parallel structures.The passage that is illustrated in the left side is a biocide dispensing passage (BDP).Biocide dispensing passage comprise as shown in Figure 2 have a sectional area (A
IN) the input field.Venturi meter (V) is led in the input field, it comprise have shown in sectional area (A
V) the shrinking zone.The shrinking zone is connected in the biocide container (not shown) by biocide suction passage (BSP).By-pass channel (BPP) is illustrated in the right of Fig. 2.In this particular example, it is the sectional area (A shown in having
BP) simple cylindrical tube.
During use, water is imported upper chamber shown in arrow (going into).Because gravity, portion water is downward through biocide dispensing passage (BDP), and portion water is downward through by-pass channel (BPP).When the water of the biocide dispensing passage of flowing through passes through Venturi meter, its speed increases and causes that pressure descends, thus, overcoming gravity upwards draws biocide from biocide chamber (BC), upwards enter Venturi meter, mix flowing to lower chambers (BC) downwards with water with this place that flows through through biocide suction passage (BSP).Two passages, promptly biocide dispensing passage (BDP) and by-pass channel (BPP) are configured to compare more substantial current through by-pass channel with biocide dispensing passage.Guarantee on the one hand that by the relative velocity of two passages required liquid biocide dilute strength drops to the level of lower ppm of hope, guarantee to have in the lower chambers simultaneously enough turbulivitys on the other hand to guarantee that biocide is quick with water and to mix effectively.Without wishing to be bound by theory, except top two kinds of phenomenons, the accuracy and the reproducibility of the biocide dilution that the principle of believing serial dilution further helps to reach required.The water that is collected in the lower chambers is filtered, remove particulate matter and be collected in the collecting chamber (CC) by the strainer of flowing through (F), the water of purification from collecting chamber such as arrow (going out) distribute shown in the mark direction.
Referring now to Fig. 3, water-purification plant has upper chamber (TC) and lower chambers (BC), and upper chamber links to each other by two passages that be arranged in parallel with lower chambers, that is: biocide dispensing passage (BDP) and by-pass channel (BPP).Make source water enter biocide dispensing passage (BDP) is connected to collecting chamber (CC) before by the back strainer (F).Strainer is preferably made by carbon or fabric or composition, mainly removes suspended particles, packing, organism, color and smell.By-pass channel then drive siphon pipe container (SC) into, the siphon pipe container comprises inverted U-shaped siphon pipe (ST).One end of siphon pipe (ST) connects and fluid is communicated in Venturi meter (V), and Venturi meter is connected in biocide container (BCC) by biocide suction passage (BSP), and biocide container is arranged on the low position of comparing with Venturi meter.Biocide container is supported by two strut members (S).
During use, water is imported upper chamber shown in arrow (going into).Water enters collecting chamber (CC) then through strainer (F).Collecting chamber has by-pass channel (BPP) and biocide dispensing passage (BDP).After the filtration, the moisture after the filtration of output becomes two strands, and one is through siphon chamber (SC), and another stock-traders' know-how is crossed by-pass channel (BPP) and directly entered lower chambers (BC) then.Siphon chamber (SC) has the siphon pipe (ST) of siphon chamber of being connected in (SC) bottom, and it is communicated with Venturi meter (V) fluid, and Venturi meter attaches to siphon pipe from the outside of siphon chamber.Because gravity, portion water is downward through biocide dispensing passage (BDP), and portion water is downward through by-pass channel (BPP).When the water level in the siphon pipe (ST) was elevated to its summit, current were through the siphon pipe Venturi meter (V) of flowing through then.This further helps to provide the current that almost continue.Mobile water generates suction pressure thus, overcomes gravity biocide is upwards drawn from biocide chamber (BC), upwards enters Venturi meter through biocide suction passage (BSP), mixes flowing to lower chambers (BC) downwards with the water with this place that flows through.Two passages, promptly biocide dispensing passage (BDP) and by-pass channel (BPP) are configured to compare more substantial current through by-pass channel with biocide dispensing passage.Guarantee on the one hand that by the relative velocity of two passages required liquid biocide dilute strength drops to the level of lower ppm of hope, guarantee to have in the lower chambers simultaneously enough turbulivitys on the other hand to guarantee that biocide is quick with water and to mix effectively.The water that is collected in lower chambers such as arrow (going out) distribute shown in the mark direction.
Referring now to Fig. 4, show the enlarged view of D part (as shown in Figure 3), clearly show that siphon pipe and Venturi meter, and their positioned opposite in device.
The present invention now will describe by means of following non-limiting example.
Example
Example 1
Water-purification plant shown in Figure 1 is used for filtered water.Top chamber volumes is 4 liters.Device moves with the 40mm of upper chamber water level.The diameter of biocide dispensing passage input field is 4mm, and the diameter of Venturi meter shrinking zone is 3mm.The effective by-pass channel of doing of 6mm.The biocide that uses in the biocide container is that concentration is the clorox of 4 weight percents in the water.The effective biocide suction passage of doing of 1mm diameter.The concentration of chlorine measured (twice) in the lower chambers, the result is summarised in the table 1.
Comparative example A
Use the water-purification plant that shows as table 1, except by-pass channel is not provided.Implement twice experiment, the result is summarised in the table 1.
Table 1
| Example | Chlorine (ppm) |
| Example 1 (experiment 1) | 18.3 |
| Example 1 (experiment 2) | 16.0 |
| Comparative example A (experiment 1) | 236.4 |
| Comparative example A (experiment 2) | 230.0 |
In two examples, i.e. example 1 and comparative example A, A
IN/ A
VThe value of (being the sectional area of biocide dispensing passage input field and the ratio of the sectional area of Venturi meter shrinking zone) is 1.8.
The data of table 1 show the chlorine that utilizes device of the present invention can reach required lower concentration, and utilize the concentration of one type of prior art syringe chlorine too high so that can not be used to drink purpose.
Example 2 to 8
The device that is used for example 1 is used to carry out the experiment of example 2 to 8, has the biocide dispensing passage of different diameter (as shown in table 2) except use.Measured the concentration of chlorine in (twice) lower chambers, mean concns is illustrated in the table 2.
Table 2
| Example | Biocide dispensing passage input field diameter (mm) | Venturi meter shrinking zone diameter (mm) | A IN/A V | The concentration of chlorine (ppm) in the lower chambers |
| Example 2 | 4 | 3 | 1.8 | 17.4 |
| Example 3 | 6 | 3 | 4.0 | 23.8 |
| Example 4 | 8 | 3 | 7.1 | 22.2 |
| Example 5 | 10 | 3 | 11.1 | 18.5 |
| Example 6 | 12 | 3 | 16.0 | 18.3 |
| Example 7 | 15 | 3 | 25.0 | 18.9 |
| Example 8 | 20 | 3 | 44.4 | 20.4 |
Whole to example 8 to example 2, the diameter of by-pass channel all is 6mm, so A
BPP/ A
VBe 4.0.
Data in the table 2 show, at A
IN/ A
VIn the scope of value from 1.5 to 50, work of the present invention is good.
Example 9
Water-purification plant shown in Figure 3 is used for filtered water.Top chamber volumes is 8 liters.Device moves with the 120mm of upper chamber water level.The diameter of biocide dispensing passage input field is 8mm, and the diameter of Venturi meter shrinking zone is 3mm.5 effective by-pass channels of doing of 3mm.The biocide that uses in the biocide container is that concentration is the clorox of 1 weight percent in the water.The effective biocide suction passage of doing of 1mm diameter.The concentration of chlorine measured (in 750 liters of scopes) in the lower chambers, the result is summarised among Fig. 5.
Obviously (with reference to Fig. 5), the dosage of chlorine is suitable fixed in 750 liters of whole volume ranges.And the concentration of chlorine just within the required range.
Can easily understand, shown in example the simple assembly that liquid biocide solution is assigned in the water that will purify is provided in gravity fed water purification device.
Claims (14)
1, a kind of gravity fed water purification device comprises:
(a) upper chamber, by (i) comprise the biocide dispensing passage of Venturi meter and (ii) by-pass channel be communicated with the lower chambers fluid, wherein, the sectional area of described by-pass channel is greater than the sectional area of the shrinking zone of Venturi meter;
(b) described biocide dispensing passage is communicated with the biocide container fluid that comprises liquid biocide;
So that be transfused to a part of water of upper chamber, pass described biocide dispensing passage, and pass described Venturi meter, make biocide be inhaled into described Venturi meter, and a part of water pass described by-pass channel to collect described bottom chamber from upper chamber.
2, gravity fed water purification device as claimed in claim 1 comprises being arranged on before the described Venturi meter and the siphon pipe that is communicated with described Venturi meter fluid.
3, gravity fed water purification device as claimed in claim 1 or 2, wherein, the ratio of the sectional area of described by-pass channel and the sectional area of the shrinking zone of Venturi meter is in 2: 1 to 50: 1 scope.
4, the described gravity fed water purification device of each claim as described above, wherein, the ratio of the sectional area of the input tube of described Venturi meter and the sectional area of the shrinking zone of Venturi meter is in 1.5: 1 to 50: 1 scope.
5, the described gravity fed water purification device of each claim as described above, wherein, liquid biocide is the aqueous solution of clorox, Surchlor GR 60, iodine, quaternary ammonium compound or glutaraldehyde.
6, gravity fed water purification device according to claim 5, wherein, liquid biocide is an aqueous sodium hypochlorite solution.
7, gravity fed water purification device according to claim 6, wherein, the aqueous sodium hypochlorite solution concentration in the biocide container is in the scope of 0.01 to 50 weight percent in water.
8, the described gravity fed water purification device of each claim as described above, wherein, the concentration of bottom chamber biocide is for calculating by weight in 5/1000000ths to 100/1000000ths the scope.
9, the described gravity fed water purification device of each claim as described above, wherein, the volume of upper chamber rises in 50 liters the scope 1.
10, the described gravity fed water purification device of each claim as described above, wherein, the top of biocide container is 0.1cm to 10cm under the shrinking zone of Venturi meter.
11, the described gravity fed water purification device of each claim as described above, wherein, the outlet of described at least one by-pass channel is provided with divider.
12, as the described gravity fed water purification device of each claim in the claim 2 to 11, comprise strainer, when described device did not comprise siphon chamber and siphon pipe, filter bits was after described Venturi meter and described at least one by-pass channel; When having siphon pipe, filter bits is before described siphon pipe.
13, gravity fed water purification device as claimed in claim 12, wherein, strainer comprises carbon or fabric filter.
14, gravity fed water purification device as claimed in claim 13, wherein, yarn fabric or the nonwoven fabric of fabric filter for making by polyester or polypropylene.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN57MU2007 | 2007-01-12 | ||
| IN0057/MUM/2007 | 2007-01-12 | ||
| EP07103189 | 2007-02-28 | ||
| EP07103189.2 | 2007-02-28 | ||
| PCT/EP2007/064044 WO2008083896A1 (en) | 2007-01-12 | 2007-12-17 | Gravity-fed water purification apparatus with venturi dosing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101578238A true CN101578238A (en) | 2009-11-11 |
| CN101578238B CN101578238B (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800496908A Expired - Fee Related CN101578238B (en) | 2007-01-12 | 2007-12-17 | Gravity-fed water purification apparatus with venturi dosing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101578238B (en) |
| ZA (1) | ZA200904071B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906029A (en) * | 2010-05-31 | 2013-01-30 | 荷兰联合利华有限公司 | Water purification device |
| CN105463793A (en) * | 2014-08-19 | 2016-04-06 | 青岛海尔洗衣机有限公司 | Washing machine wire shred automatic removing device and washing machine |
| CN112028389A (en) * | 2020-08-20 | 2020-12-04 | 重庆大学 | Distributed rural domestic sewage landscape water treatment system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11866915B2 (en) * | 2020-12-07 | 2024-01-09 | Rheem Manufacturing Company | Liquid concentrate dosing systems |
| US20220177338A1 (en) * | 2020-12-07 | 2022-06-09 | Rheem Manufacturing Company | Scaling treatment systems for water heaters |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4438534A (en) * | 1982-03-03 | 1984-03-27 | The Drackett Company | Passive dispenser |
| US6358425B1 (en) * | 1998-03-09 | 2002-03-19 | Joseph A. King | Pool cleaning and sanitizing apparatus |
| AU2003228338A1 (en) * | 2002-04-09 | 2003-10-27 | Johnsondiversey, Inc. | Eductor |
-
2007
- 2007-12-17 ZA ZA200904071A patent/ZA200904071B/en unknown
- 2007-12-17 CN CN2007800496908A patent/CN101578238B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906029A (en) * | 2010-05-31 | 2013-01-30 | 荷兰联合利华有限公司 | Water purification device |
| CN102906029B (en) * | 2010-05-31 | 2015-06-03 | 荷兰联合利华有限公司 | Water purification device |
| CN105463793A (en) * | 2014-08-19 | 2016-04-06 | 青岛海尔洗衣机有限公司 | Washing machine wire shred automatic removing device and washing machine |
| CN105463793B (en) * | 2014-08-19 | 2020-01-10 | 青岛海尔洗衣机有限公司 | Washing machine and automatic thread scrap removing device thereof |
| CN112028389A (en) * | 2020-08-20 | 2020-12-04 | 重庆大学 | Distributed rural domestic sewage landscape water treatment system |
| CN112028389B (en) * | 2020-08-20 | 2022-08-12 | 重庆大学 | Distributed rural domestic sewage landscape water treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200904071B (en) | 2010-08-25 |
| CN101578238B (en) | 2013-01-09 |
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