CN204550231U - A micro-waste water purifier - Google Patents

Abstract

The utility model relates to the technical field of water purifiers, in particular to a micro-wastewater water purifier, which comprises a pre-filter, a water inlet solenoid valve, a booster pump, a filter element mechanism and a RO (reverse osmosis) membrane which are sequentially connected through a pipeline, and also comprises a circulating pump, a flow limiting valve, a one-way valve, a high-voltage switch, a water storage barrel and a post-filter, wherein the pre-filter is connected with a raw water pipeline; the concentrated water outlet of the RO membrane is connected with a concentrated water outlet pipe, the water outlet end of the concentrated water outlet pipe is respectively connected with a water return pipe and a water outlet pipe, the water return pipe is provided with a circulating pump, the water outlet end of the water return pipe is connected with the water outlet end of the booster pump, the water outlet pipe is provided with a flow limiting valve, and the water outlet of the water outlet pipe is connected with a water outlet pipe. The water purifier can save water resource, discharge less waste water and ensure the service life of the RO membrane and the quality of pure water.

Description

A micro-waste water purifier

technical field

The utility model relates to the technical field of water purifiers, in particular to a micro-waste water purifier.

Background technique

Most cities in my country use Class III surface water, and rural areas mainly use Class IV groundwater as their drinking water source. With the intensification of pollution, problems such as two insects (Giardia flagella, Cryptosporidium), blue-green algae, and heavy metals exceeding the standard, etc., Serious threat to urban and rural drinking water safety. Therefore, surface water and groundwater must be purified before they can be used as drinking water. At present, the core of domestic and commercial drinking water treatment technology is mainly membrane filtration technology. One of them is ultrafiltration membrane filtration, with a filter pore size of 0.01 microns, which can remove all turbid substances (such as sediment, rust, etc.), pathogenic microorganisms (such as parasites, bacteria, viruses, etc.), and can also remove most of the Macromolecular organic matter does not require electricity and does not produce waste water. It is more suitable for cities with better water quality in southern China, but it cannot remove calcium, magnesium ions, organic compounds, radioactive radon, arsenic and other harmful or carcinogenic substances in the water. Heavy metal ions such as lead and mercury cannot meet the needs of safe and healthy drinking water treatment in northern regions and vast rural areas where the water quality is relatively poor. The other is reverse osmosis membrane filtration, with a filter pore size of 0.0001 micron, which can completely remove all harmful substances in water, and only retain water molecules to produce pure water. It has wide applicability and is the main force of water treatment in China's vast urban and rural areas.

However, due to the working principle of the reverse osmosis membrane, the pure water machine with reverse osmosis membrane needs to discharge a large amount of waste water (concentrated water) in the process of producing pure water. Affected by water temperature and water quality, a piece of pure water needs to be discharged. 3-5 parts of waste water. The current situation of producing astonishing waste water deviates from the domestically advocated scientific development and the "energy saving and consumption reduction" requirements of building a conservation-minded society. In addition, while wasting water, the workload of the pretreatment filter element is also increased, that is, the service life of the pretreatment filter element is shortened.

Contents of the invention

The purpose of this utility model is to provide a micro-waste water purifier for the above-mentioned deficiencies in the prior art. The water purifier can save water resources, discharge less waste water, meet the national energy-saving requirements, and ensure the service life of the RO membrane. .

The purpose of this utility model is achieved through the following technical solutions.

A micro-waste water purifier, comprising a pre-filter, a water inlet solenoid valve, a booster pump, a filter mechanism and an RO membrane connected sequentially through pipelines, the water purifier also includes a circulating pump, a flow limiting valve, a single directional valve, high pressure switch, water storage tank and post filter,

The pre-filter is connected to the raw water pipeline, the water purification outlet of the RO membrane is connected to a water purification outlet pipe, and the one-way valve and the high-pressure switch are sequentially arranged on the water purification outlet pipe along the direction of water flow. The water outlet ends of the water purification outlet pipes are respectively connected with the water storage bucket and the post filter;

The concentrated water outlet of the RO membrane is connected with a concentrated water outlet pipe, and the outlet ends of the concentrated water outlet pipe are respectively connected with a return pipe and a drain pipe. The circulating pump is arranged on the return pipe, and the outlet end of the return pipe is connected to the The water outlet of the booster pump is connected, the flow limiting valve is arranged on the drain pipe, and the water outlet of the drain pipe is connected to the downpipe.

Wherein, the flux per unit time of the circulation pump is 2.0 L/min.

The outlet end of the concentrated water outlet pipe is also connected with a flushing pipe, and the flushing pipe is provided with a flushing electromagnetic valve.

Wherein, the water purifier also includes a cleaning solution for cleaning the RO membrane, and the cleaning solution is food-grade citric acid or white vinegar.

Wherein, the filter element mechanism includes a primary filter element and a secondary filter element which are sequentially connected in series, the primary filter element is an activated carbon filter element, and the secondary filter element is a pp cotton filter element.

Wherein, the filter element mechanism includes a secondary composite filter element and a tertiary composite filter element connected in parallel, the water outlet ends of the secondary composite filter element and the tertiary composite filter element are respectively connected to the water inlet end of the RO membrane, and the The pre-filter is an origami filter element with a pore size of 20 μm.

Wherein, the secondary composite filter element and the tertiary composite filter element are composite filter elements of activated carbon and PP cotton, the outer layer of the composite filter element is PP cotton with a pore size of 1-5 μm, and the PP cotton is filled with sintered activated carbon.

Wherein, the post-filter is an activated carbon filter element filter.

The beneficial effects of the utility model :

The micro-waste water purifier of the utility model can directly pressurize the entire circulation system by changing the position of the booster pump, and the circulation system is added to promote the circulation water to quickly pass through the surface of the RO membrane at a flow rate of 2.0L/min. The ratio of pure water to discharged wastewater is 3:1, the amount of discharged wastewater is small, and the TDS value of pure water is low, which greatly saves water resources, meets the national energy-saving requirements, and the quality of pure water is high. Ensure the service life of the RO membrane and the quality of pure water.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the embodiment in the accompanying drawing does not constitute any restriction to the present utility model, for those of ordinary skill in the art, under the premise of not paying creative work, also can obtain according to following accompanying drawing Additional drawings.

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a structural schematic diagram of Embodiment 2 of the present utility model.

Reference signs include:

10——Pre-filter 20——Water inlet solenoid valve 30——Boost pump

41——Primary filter element 42——Secondary filter element 43——Secondary composite filter element

44——three-stage composite filter element 50——RO membrane

60——Circulation pump 70——Limiting valve 80——One-way valve

90——High pressure switch 100——Water storage tank 110——Post filter

120——pure water faucet 11——raw water pipeline 12——clean water outlet pipe

13——Concentrated water outlet pipe 14——Return pipe 15——Drain pipe

16——flushing pipe 161——flushing solenoid valve.

Detailed ways

The utility model is further described in conjunction with the following examples, see Fig. 1 and Fig. 2 .

Example 1

As shown in Figure 1, a kind of micro-wastewater water purifier of the present embodiment comprises the pre-filter 10, water inlet electromagnetic valve 20, booster pump 30, filter element mechanism and RO membrane 50 connected successively by pipeline, described The water purifier also includes a circulating pump 60, a flow limiting valve 70, a one-way valve 80, a high pressure switch 90, a water storage bucket 100 and a post filter 110,

The pre-filter 10 is connected to the raw water pipeline 11, the water purification outlet of the RO membrane 50 is connected to the water purification outlet pipe 12, and the one-way valve 80 and the high-pressure switch 90 are sequentially arranged on the water flow direction. A clean water outlet pipe 12, the outlet ends of the clean water outlet pipe 12 are respectively connected to the water storage bucket 100 and the post filter 110;

The concentrated water outlet of the RO membrane 50 is connected with a concentrated water outlet pipe 13, and the outlet ends of the concentrated water outlet pipe 13 are respectively connected with a return pipe 14 and a drain pipe 15, and the circulation pump 60 is arranged on the return pipe 14, so The water outlet of the return pipe 14 is connected to the water outlet of the booster pump 30 , the flow limiting valve 70 is arranged on the drain pipe 15 , and the water outlet of the drain pipe 15 is connected to a downpipe.

The micro-waste water purifier of the utility model, by changing the position of the booster pump 30, directly pressurizes the entire circulation system, increases the circulation system to promote the circulation water to quickly pass through the surface of the RO membrane 50 at a flow rate of 2.0L/min, and achieves Without increasing the TDS value, the ratio of the produced pure water to the discharged waste water is 3:1, the amount of discharged waste water is small, and the TDS value of the pure water is low, which greatly saves water resources and meets the national energy-saving requirements. High, and ensure the service life of the RO membrane 50.

The outlet end of the concentrated water outlet pipe 13 is also connected to a flushing pipe 16 , and the flushing pipe 16 is provided with a flushing solenoid valve 161 . The flushing solenoid valve 161 is electrically connected with the electric control device. When the RO membrane 50 needs to be flushed, the waste water after flushing can be discharged through the flushing pipe 16 to prolong the service life of the RO membrane 50 .

Tested with a traditional 100-gallon water purifier, the raw water pressure is 2.2kg, the raw water TDS is 1960 ppm, and the raw water temperature is 18°C, the TDS value of the produced pure water and the discharged waste water is different. The changes are shown in the table below:

Tested with the 100-gallon model of the micro-waste water purifier of the present utility model, the raw water pressure is 2.3kg, the raw water TDS is 1960 ppm, and the raw water temperature is 18°C, the different ratios of the prepared pure water and the discharged waste water The change of TDS value is shown in the table below:

Note: The pure water production conditions of 100 gallons (G) RO membrane under standard conditions are: water temperature 25°C, raw water TDS 500ppm, pure water flow rate 266ml/min.

As can be seen from the above two data tables, when the ratio of pure water and waste water is 1:3, the TDS value of the traditional water purifier is close to that of the water purifier of the present utility model, and when the ratio of pure water and waste water is 1:3 1 or even 3:1 and 6:1, the pure water TDS value of this water purifier is 20 ppm less than that of traditional water purifiers. The ratio of pure water to waste water produced by this micro-waste water purifier is 3:1. Without losing the TDS value, it greatly saves water resources and reduces waste water discharge. It meets the national energy-saving requirements. The service life of the RO membrane 50.

In addition, this micro-waste water purifier also has the following advantages:

A. By changing the position of the booster pump 30, directly pressurize the entire circulation system; increase the circulation pump 60 to quickly circulate the circulating water at a flow rate of 2 liters per minute, and flush the RO membrane with a large flux of circulating water while producing water 50 surface, the probability of calcium, magnesium ions and colloids in the water adhering to the RO membrane 50 surface is greatly reduced, thereby achieving the function of washing while producing water.

B. Because of the addition of a large-flux circulation system, the water purifier itself has the function of cleaning the RO membrane 50 with drugs. When the traditional model is used, once the calcium, magnesium ions and colloids in the water block the RO membrane 50, the water production will be serious. Insufficient, only the RO membrane 50 can be replaced. And this water inlet machine can carry out medicine cleaning to RO membrane 50, prolong the service life of RO membrane 50 with this. The water yield of the RO membrane 50 after cleaning with drugs has reached the level of the new RO membrane 50, and its service life has been extended by more than 3 times compared with the traditional model.

C. Because of the existence of the large-flow circulation system, when the water purifier is producing water, under the action of the circulation pump 60, the flow and velocity of the water flowing through the surface of the RO membrane 50 are 3 times that of the traditional model, (100 gallons Take RO membrane 50 as an example: the concentrated water discharge of traditional models is 600--700 ml/min, that is, the flux of concentrated water passing through the surface of RO membrane 50 per unit time, and the concentrated water of this water purifier passes through the surface of RO membrane 50 per unit time The flux is 2000ml/min) Due to the increased flux, the TDS value of pure water produced is lower than that of traditional models.

Wherein, the water purifier also includes an electric control device connected to the mains, the water inlet solenoid valve 20, the high-voltage switch 90, the booster pump 30 and the circulation pump 60 are respectively connected to the electric The control device is electrically connected.

Wherein, the flux per unit time of the circulation pump 60 is 2.0L/min, that is, the flux of the circulating water of the water purifier passing through the surface of the RO membrane 50 per unit time is 2.0L/min, and the large flux of the circulation pump 60 is utilized Make the water purifier of the present utility model have the function of cleaning the RO membrane 50.

Wherein, the water purifier also includes a cleaning solution for cleaning the RO membrane 50, and the cleaning solution is food-grade citric acid or white vinegar, which is easy to obtain materials and has low cleaning cost. The specific implementation is as follows: When the flow rate of the water produced by the water machine drops or is used as a maintenance drug for cleaning, first cut off the water and power, turn on the domestic water tap to remove the pressure in the water machine, remove any pre-membrane pretreatment filter bottle, and pour it out. Remove the circulating water in the same proportion as the cleaning solution, reinstall the filter bottle after filling the liquid medicine, and only allow the circulating pump 60 to work after the power is turned on. At this time, the booster pump 30 stops working because the raw water is closed, and the cleaning in the filter bottle The pharmaceutical industry circulates the medicine to flush the RO membrane 50 under the action of the circulation pump 60. The medicine cleaning time is determined according to the blocking degree of the RO membrane 50. After the cleaning time is reached, the machine is shut down, and then the raw water ball valve and the flushing solenoid valve 161 are opened, and all filter bottles are flushed with tap water. The cleaning fluid in the cleaning fluid is completely replaced from the flushing pipe 16, thereby completing the work of cleaning the RO membrane 50 with the medicine.

Wherein, the filter element mechanism includes a primary filter element 41 and a secondary filter element 42 connected in series in sequence, the primary filter element 41 is an activated carbon filter element, and the secondary filter element 42 is a pp cotton filter element. The filter element has a simple structure, which is convenient for replacement and maintenance, and reduces the cost of use and maintenance.

Wherein, the post-filter 110 is an activated carbon filter element filter, which is beneficial to improve the taste of pure water, and the drinking effect of pure water is good.

Example 2

As shown in Figure 2, the filter element mechanism of the present embodiment comprises the secondary composite filter element 43 and the tertiary composite filter element 44 connected in parallel, and the water outlets of the secondary composite filter element 43 and the tertiary composite filter element 44 are respectively connected to the The water inlet end of the RO membrane 50 is connected, and the pre-filter 10 is an origami filter element with a pore size of 20 μm. Further, the two-stage composite filter element 43 and the three-stage composite filter element 44 are composite filter elements of activated carbon and PP cotton, the outer layer of the composite filter element is PP cotton with a pore size of 1-5 μm, and the PP cotton is filled with sintered activated carbon .

The function of the origami filter element is to filter larger particles in the raw water, so that the whole filter system can perform coarse filtration first and then fine filtration, and the surface area of the origami filter element is several times larger than that of the PP cotton filter element, thus prolonging the service life. The function of the composite filter element is to filter small particles in the raw water. The inner layer is sintered activated carbon. Its main function is to absorb residual chlorine in the raw water. Compared with granular carbon, the adsorption capacity of sintered activated carbon is more than 2 times stronger. Connecting the secondary composite filter element 43 and the tertiary composite filter element 44 in parallel can exert their effects more effectively. By changing the connection mode and the structure of the filter element, the efficiency and service life of the pretreatment before the RO membrane 50 can be improved to the greatest extent.

The rest of this embodiment is the same as Embodiment 1, and will not be repeated here.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (7)

1. a micro-waste water water-purifying machine, it is characterized in that: comprise connected successively by pipeline fore filter, entering water electromagnetic valve, topping-up pump, filter core mechanism and RO film, described water-purifying machine also includes recycle pump, flow-limiting valve, check valve, high-voltage switch gear, water butt and post-filter

Described fore filter is connected with raw water tubes line, the pure water inlet of described RO film is connected with water purification rising pipe, described check valve and described high-voltage switch gear are set in turn in described water purification rising pipe along water (flow) direction, and the water side of described water purification rising pipe is connected with described water butt and described post-filter respectively;

The dense water out of described RO film is connected with dense water rising pipe, the water side of dense water rising pipe is connected to return water pipe and water shoot, described recycle pump is arranged at described return water pipe, the water side of described return water pipe is connected with the water side of described topping-up pump, described flow-limiting valve is arranged at described water shoot, and the water outlet of described water shoot is connected with outfall sewer.

2. the micro-waste water water-purifying machine of one according to claim 1, is characterized in that: the water side of described dense water rising pipe is also connected with washpipe, and washpipe is provided with scouring electromagnetic valve.

3. the micro-waste water water-purifying machine of one according to claim 1, is characterized in that: described water-purifying machine also includes the scavenging solution for cleaning RO film, scavenging solution is citric acid or the light-coloured vinegar of food grade.

4. the micro-waste water water-purifying machine of one according to claim 1, is characterized in that: described filter core mechanism comprises the one-level filter core and secondary filter core that are sequentially connected in series, and described one-level filter core is active carbon filter core, and described secondary filter core is the cotton filter core of pp.

5. the micro-waste water water-purifying machine of one according to claim 1, it is characterized in that: described filter core mechanism comprises the secondary composite filter element and three grades of composite filter elements that are connected in parallel, the water side of described secondary composite filter element, described three grades of composite filter elements is connected with the feed-water end of described RO film respectively, and described fore filter is the paper folding filter core in 20 μm, aperture.

6. the micro-waste water water-purifying machine of one according to claim 5, it is characterized in that: described secondary composite filter element, described three grades of composite filter elements are the composite filter element of gac and PP cotton, the skin of this composite filter element is the PP cotton of aperture 1-5 μm, is filled with sintering activity charcoal in PP cotton.

7. according to the micro-waste water water-purifying machine of the one in claim 1-6 described in any one, it is characterized in that: described post-filter is active carbon filter core strainer.