CN204550236U - 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 water pump, a filter element mechanism and a RO (reverse osmosis) membrane which are sequentially connected through a pipeline, and also comprises a current-limiting and circulating solenoid valve, a current-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 discharge pipe, the water return pipe is provided with a flow limiting and circulating electromagnetic valve, the water outlet end of the water return pipe is connected with the water inlet end of the water pump, and the water discharge pipe is provided with a flow limiting valve. 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 organic compounds, radioactive radon, arsenic and other harmful or carcinogenic substances in water, as well as heavy metals such as lead and mercury. Ions, in the northern regions and vast rural areas where the water quality is relatively poor, cannot meet the needs of safe and healthy drinking water treatment. 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 water pump, a filter element mechanism and an RO membrane connected sequentially through pipelines, the water purifier also includes a flow-limiting and circulation solenoid valve, a flow-limiting valve, One-way 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 to a concentrated water outlet pipe, and the outlet ends of the concentrated water outlet pipe are respectively connected to a return pipe and a drain pipe. The current limiting and circulation solenoid valve is arranged on the return pipe, and the return pipe The water outlet end of the water pump is connected to the water inlet end of the water pump, the flow limiting valve is arranged on the drain pipe, and the water outlet of the drain pipe is connected to the downpipe,

The water purifier also includes an electric control device, the water inlet solenoid valve, the high pressure switch, the water pump and the current limiting and circulation solenoid valve are respectively electrically connected to the electric control device.

Wherein, the current-limiting and circulating solenoid valve includes a solenoid valve body and a valve seat cooperating with the solenoid valve body, a water retaining plate and a gasket are arranged between the solenoid valve body and the valve seat, and springs are arranged in the middle of the solenoid valve body in sequence. , the valve core and the silica gel grains, the silica gel grains are in contact with the water retaining plate, the gasket is embedded with the valve seat, there is a circulation chamber in the valve seat, and a partition is arranged between the circulation chamber and the inner wall of the valve seat, and the partition board The height of the valve seat is less than the height of the circulation chamber. The two sides of the valve seat are respectively provided with an inlet pipe and an outlet pipe. The inlet pipe communicates with the inside of the valve seat. The circulation chamber is provided with a circulation hole. A flow-limiting hole is provided, and the flow-limiting hole communicates with the inside of the valve seat.

Wherein, the water retaining plate is provided with a leakage hole, and the sealing pad is provided with a through hole at a position corresponding to the leakage hole, and the through hole and the leakage hole are both connected with the inner cavity of the valve seat.

Wherein, when the water pump is used as a circulating pump, the flux per unit time 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 solenoid 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 is controlled by an electric control device. When the water pump, current limiting and circulation solenoid valve are opened, the water machine is in a circulating state, and the water pump is used as a circulating pump at this time, and the circulating water flow rate is 2 liters/minute. Its purpose is to flush the RO membrane with a large flow of water. After 2 minutes of circulation, the electric control device controls the current limiting and circulating solenoid valve to close the water machine and enter the water production state. The water pump is used as a booster pump at this time. And the current limiting function of the circulating solenoid valve can control the working pressure of water production. Realize that the ratio of pure water to discharged wastewater is 3:1 without increasing the TDS value, the amount of discharged wastewater is small, and the TDS value of pure water is low, which greatly saves water resources and meets the national energy-saving requirements. Pure water The quality is high, and the service life of the RO membrane and the quality of pure water are guaranteed.

The water purifier of the utility model only cooperates with the water pump and the current limiting and circulation solenoid valve, and only needs to use one water pump to realize the two functions of pressurization and circulation, which greatly reduces the cost of materials and production, and the structure of the water purifier is more efficient. Simple, easier to assemble and maintain.

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 diagram of the principle structure of Embodiment 1 of the present utility model.

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

Fig. 3 is a schematic cross-sectional structure diagram of the current limiting and circulating solenoid valve of the present invention.

Fig. 4 is a structural schematic diagram of the valve seat of the current limiting and circulating solenoid valve of the present invention.

Reference signs include:

10——Pre-filter 20——Inlet solenoid valve 30——Water pump

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

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

60——Limiting and circulation solenoid valve 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 130——electric control device

301——Solenoid valve body 302——Valve seat

303——Water flap 304——Sealing gasket 305——Spring

306——spool 307——silica gel 308——circulation chamber

309——Partition 310——Water inlet pipe 311——Water outlet pipe

312——circulation hole 313——restriction hole.

Detailed ways

The utility model is further described in conjunction with the following embodiments, see Fig. 1 to Fig. 4 .

Example 1

As shown in Figure 1, a kind of micro-waste water purifier of the present embodiment comprises the pre-filter 10, water inlet solenoid valve 20, water pump 30, filter element mechanism and RO membrane 50 connected successively by pipelines, the water purifier The machine also includes a flow limiting and circulation solenoid valve 60, a flow limiting valve 70, a one-way valve 80, a high pressure switch 90, a water storage tank 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 flow limiting and circulation solenoid valve 60 is arranged in the return The water pipe 14, the water outlet end of the return pipe 14 is connected to the water inlet end of the water 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 present utility model is controlled by the electric control device 130. When the water pump 30, the current limiting and circulation solenoid valve 60 are opened, the water machine is in a circulating state, and the water pump 30 is used as a circulating pump at this time, and the circulating water flow rate is 2 The purpose is to flush the RO membrane with a large flow of water. After 2 minutes of circulation, it is controlled by the electric control device 130. The current limiting and circulation solenoid valve 60 closes the water machine and is in the water production state. The water pump 30 is now used as an increasing The pressure pump is used, and the current limiting function of the current limiting and circulating solenoid valve 60 is used to control the working pressure of water production. Realize that the ratio of the produced pure water to the discharged wastewater is 3:1 without increasing the TDS value, the amount of discharged wastewater is small, and the TDS value of pure water is low, which greatly saves water resources and meets the national energy-saving requirements. The water quality is high, and the service life of the RO membrane 50 is guaranteed.

As shown in Figures 3 and 4, the current limiting and circulating solenoid valve of this embodiment includes a solenoid valve body 301 and a valve seat 302 cooperating with the solenoid valve body 301, and a stopper is arranged between the solenoid valve body 301 and the valve seat 302. The water plate 303 and the sealing gasket 304, the middle part of the solenoid valve body 301 are provided with a spring 305, a valve core 306 and silica gel particles 307 in sequence, the silica gel particles 307 abut against the water retaining plate 303, the sealing gasket 304 is embedded with the valve seat 302, and the valve seat 302 is provided with a circulation chamber 308, and a partition 309 is arranged between the circulation chamber 308 and the inner wall of the valve seat 302. The water pipe 310 and the water outlet pipe 311, the water inlet pipe 310 communicates with the inside of the valve seat 302, the circulation chamber 308 is provided with a circulation hole 312, the water outlet pipe 311 communicates with the circulation hole 312, and the water outlet pipe 311 also has a limited flow hole 313, the flow limit hole 313 communicates with the inside of the valve seat 302 .

When the water purifier is in a circulating state, after water enters the valve seat 302 from the water inlet pipe 310, the silica gel particles 307 are bounced up, the water retaining plate 303 and the gasket 304 are lifted under the action of water pressure, and the water enters the circulation chamber 308 , and then left to the outlet pipe 311 through the circulation hole 312 and circulated to the water inlet end of the water pump. At this time, the water pump is used as a circulation pump; After entering the valve seat 302 from the water inlet pipe 310, it overflows the dividing plate 309 and then enters the water outlet pipe 311 through the flow limiting hole 313. At this time, the water pump is used as a booster pump. The utility model utilizes the current limiting and circulating electromagnetic valve to realize the control of the two states of current limiting and circulating, and utilizes the current limiting function of the current limiting and circulating electromagnetic valve to control the working pressure of water production. The water purifier can realize simultaneous discharge while producing water, which greatly enhances the convenience of use.

Wherein, the water retaining plate 303 is provided with a leaking hole, and the sealing gasket 304 is provided with a through hole corresponding to the leaking hole, and the through hole and the leaking hole are all communicated with the inner cavity of the valve seat 302 to ensure that the water retaining plate is infiltrated. The water on the top of the 303 can fall into the inside of the valve seat 302 through the leakage hole and the through hole in time, so as to prevent the liquid from leaking out of the electromagnetic valve body 301.

The outlet end of the concentrated water outlet pipe 13 is also connected with a flushing pipe 16 , and the flushing pipe 16 is provided with a flushing solenoid valve 161 , which is electrically connected with the electric control device 130 . 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, and the raw water temperature is 18°C. Under the different ratios of the pure water produced and the discharged waste water, the TDS value 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, under the conditions of raw water pressure 2.3kg, raw water TDS of 1960, and raw water temperature of 18°C, the prepared pure water and the discharged waste water are in different proportions , the change of TDS value is shown in the table below:

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 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. Controlled by the electric control device 130, when the water pump, current limiting and circulation solenoid valves are opened, the water machine is in a circulating state. The water pump is used as a circulating pump at this time, and the circulating water flow rate is 2 liters per minute. The purpose is to use large flux The water flows to flush the RO membrane. After 2 minutes of circulation, the electric control device 130 controls the flow limiting and circulation solenoid valve to close the water machine and enters the water production state. The water pump is used as a booster pump at this time. Flow function to control the working pressure of water.

B. Because of the large flux circulation system, the water purifier itself has the function of cleaning the RO membrane 50 with drugs. When the calcium, magnesium ions and colloids in the water block the RO membrane 50 when the traditional model is used, the water production will be seriously 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.

Wherein, the water purifier also includes an electric control device 130 connected to the mains, the water inlet solenoid valve 20, the high pressure switch 90, the water pump 30 and the current limiting and circulation solenoid valve 60 are respectively connected to The electric control device 130 is electrically connected.

Wherein, the flux per unit time of the water pump 30 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 water pump 30 is used to make this The water purifier of the utility model has 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, remove any pre-membrane pretreatment filter bottle, pour out the circulating water in the same proportion as the cleaning solution, and fill it up. After the liquid medicine, the filter bottle is reinstalled, and the water pump 30 and the current-limiting and circulation solenoid valve 60 work after the power is supplied. The drug cleaning time is determined by the degree of membrane blocking. After the cleaning time is reached, the flushing solenoid valve 161 is opened to completely replace the cleaning solution in all filter bottles from the flushing pipe 16, thereby completing the work of cleaning the RO membrane 50 with the drug. The pre-membrane pretreatment filter bottle refers to the filter bottle of the filter element mechanism connected in front of the RO membrane.

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 first-stage origami filter element (pre-filter 10) is to filter larger particles in the raw water, so that the entire filtration 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 Therefore, the service life is prolonged. The secondary filter element and the tertiary filter element are composite filter elements, and the structure of the composite filter element is that the outer layer is a PP cotton filter material with a pore size of 1-5 microns, and its function is to filter smaller particulate matter in raw water, and the inner layer is sintered activated carbon , its main function is to adsorb residual chlorine in raw water, and the adsorption capacity of sintered activated carbon is more than 2 times stronger than that of granular carbon. 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 (8)

1. A kind of micro-waste water purifier, it is characterized in that: comprise the pre-filter that is connected successively by pipeline, water inlet electromagnetic valve, water pump, filter core mechanism and RO membrane, described water purifier also comprises limited flow and circulating electromagnetic valve, restrictor valve, one-way 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 to a concentrated water outlet pipe, and the outlet ends of the concentrated water outlet pipe are respectively connected to a return pipe and a drain pipe. The current limiting and circulation solenoid valve is arranged on the return pipe, and the return pipe The water outlet end of the water pump is connected to the water inlet end of the water pump, the flow limiting valve is arranged on the drain pipe, and the water outlet of the drain pipe is connected to the downpipe, The water purifier also includes an electric control device, the water inlet solenoid valve, the high pressure switch, the water pump and the current limiting and circulation solenoid valve are respectively electrically connected to the electric control device. 2. A micro-waste water purifier according to claim 1, characterized in that: the current limiting and circulating solenoid valve comprises a solenoid valve body and a valve seat cooperating with the solenoid valve body, the solenoid valve body and the valve seat There is a water retaining plate and a sealing gasket between them. The middle part of the solenoid valve body is provided with a spring, a valve core and silica gel particles in sequence. There is a partition between the circulation chamber and the inner wall of the valve seat. The height of the partition is smaller than the height of the circulation chamber. There are water inlet pipes and outlet pipes on both sides of the valve seat, and the water inlet pipe communicates with the interior of the valve seat. , the circulation chamber is provided with a circulation hole, the water outlet pipe is connected with the circulation hole, and the water outlet pipe is also provided with a flow-limiting hole, and the flow-limiting hole is connected with the inside of the valve seat. 3. A kind of micro-waste water purifier according to claim 2, characterized in that: the water retaining plate is provided with leaking holes, and the position of the sealing pad corresponding to the leaking holes is provided with through holes, through holes, leaking holes All communicate with the inner cavity of the valve seat. 4. A micro-waste water purifier according to claim 1, characterized in that: the outlet end of the concentrated water outlet pipe is also connected to a flushing pipe, and the flushing pipe is provided with a flushing solenoid valve. 5. A kind of micro-wastewater purifier according to claim 1, characterized in that: the filter element mechanism comprises a primary filter element and a secondary filter element connected in series in sequence, the primary filter element is an activated carbon filter element, and the secondary filter element is an activated carbon filter element. The first grade filter element is pp cotton filter element. 6. A kind of micro-waste water purifier according to claim 1, characterized in that: said filter element mechanism comprises a secondary composite filter element and a tertiary composite filter element connected in parallel, said secondary composite filter element, said tertiary composite filter element The water outlets of the composite filter elements are respectively connected to the water inlets of the RO membranes, and the pre-filter is an origami filter element with a pore size of 20 μm. 7. A kind of micro-waste water purifier according to claim 6, is characterized in that: described secondary composite filter core, described tertiary composite filter core are the composite filter core of activated carbon and PP cotton, the outer layer of this composite filter core It is PP cotton with a pore size of 1-5 μm, and the PP cotton is filled with sintered activated carbon. 8. A micro-waste water purifier according to any one of claims 1-7, characterized in that: the post-filter is an activated carbon filter element filter.