CN224172638U - A type of pure water equipment - Google Patents

Abstract

The utility model discloses primary pure water equipment which comprises a raw water tank, a primary filtering device, a secondary filtering device, a booster pump, an RO host, a pure water tank and a concentrated water tank which are sequentially connected through pipelines, wherein a concentrated water outlet pipeline on the RO host is connected with the concentrated water tank, a concentrated water reflux pipeline is arranged on the concentrated water outlet pipeline, a reflux control valve is arranged on the concentrated water reflux pipeline, the other end of the concentrated water reflux pipeline is connected with a water inlet pipeline of the booster pump, and the concentration of pretreatment water is increased by refluxing a part of concentrated water to the booster pump, so that the water inflow of an inner membrane of the RO host is increased, the flow velocity of the water in the membrane is increased, the blocking probability of the membrane is reduced, the service life of the membrane is prolonged, and the water yield can be ensured even if the membrane is operated for a long time.

Description

Primary water purification equipment

Technical Field

The utility model belongs to the technical field of water purification, and particularly relates to primary pure water equipment.

Background

In common water purification device, can use the booster pump to pressurize filtration system, guarantee that raw water can effectively pass through RO membrane (reverse osmosis membrane), but the membrane can be impurity jam after certain time, thereby reduce the inflow of membrane, reduce the water outlet velocity of flow, also reduce the life of membrane simultaneously, and general solution is just increase a set of rinse-system, use the pure water that filters out to wash the membrane, guarantee the filter effect and the life-span of membrane, but generally all before the filtration when the equipment starts, then can't wash when the equipment is running, and the membrane just begins to block up when the operation, consequently its water yield can descend gradually, consequently the unable water yield of guaranteeing of long-time operation.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides first-stage pure water equipment, which increases the concentration of pretreatment water by refluxing a part of concentrated water to the booster pump, so as to increase the water inflow of the inner membrane of the RO host, increase the flow velocity of the water in the membrane, reduce the blocking probability of the membrane, prolong the service life of the membrane and ensure the water yield even if the membrane is operated for a long time.

In order to achieve the purpose, the utility model provides the technical scheme that the primary pure water equipment comprises a raw water tank, a primary filtering device, a secondary filtering device, a booster pump, an RO host, a pure water tank and a concentrated water tank which are sequentially connected through pipelines, wherein a concentrated water outlet pipeline on the RO host is connected with the concentrated water tank, a concentrated water reflux pipeline is arranged on the concentrated water outlet pipeline, a reflux control valve is arranged on the concentrated water reflux pipeline, and the other end of the concentrated water reflux pipeline is connected with a water inlet pipeline of the booster pump.

Further, the primary filtering device comprises a quartz sand filter and an activated carbon filter, the quartz sand filter is connected with the raw water tank through a pipeline, the quartz sand filter is connected with the activated carbon filter, and the activated carbon filter is connected with the secondary filtering device.

Further, the secondary filter device is a precise filter, the precise filter is connected with a booster pump through a pipeline, and the concentrated water backflow pipeline is connected with the pipeline.

Further, liquid level switches are arranged in the raw water tank, the pure water tank and the concentrated water tank.

Further, pressure protection switches are arranged on water inlet and outlet pipes of the booster pump.

Further, a booster pump return pipe is arranged between the water inlet pipe and the water outlet pipe of the booster pump, and a return valve is arranged on the booster pump return pipe.

Compared with the prior art, the method has the beneficial effects that when the membrane in the RO host is required to be washed, the reflux control valve on the concentrated water reflux pipeline is opened, so that the concentrated water in the concentrated water outlet pipeline flows into the concentrated water reflux pipeline, a certain amount of concentrated water flows back into the water inlet pipeline of the booster pump, is mixed with the pretreatment water and enters the RO host after being pressurized, and the concentration of the pretreatment water is increased, so that the water inflow of the membrane can be increased, the flow velocity of the water in the membrane can be increased, the blocking probability of the membrane can be reduced, the service life of the membrane can be prolonged, and the water yield can be ensured after long-time operation.

Drawings

FIG. 1 is a schematic diagram of the primary water purification apparatus of the present utility model.

The reference numerals comprise a raw water tank 1, a booster pump 2, an RO host 3, a pure water tank 4, a concentrated water tank 5, a concentrated water outlet pipeline 6, a concentrated water reflux pipeline 7, a reflux control valve 8, a water inlet pipeline 9, a raw water pump 10, a quartz sand filter 11, an activated carbon filter 12, a precision filter 13, a pressure protection switch 14, a booster pump reflux pipe 15, a reflux valve 16, an automatic flushing electromagnetic valve 17 and a waste water regulating valve 18.

Detailed Description

In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

The utility model is further described with reference to fig. 1.

The utility model provides a one-level pure water equipment, includes former water tank, one-level filter equipment, second grade filter equipment, booster pump, RO host computer, pure water tank and concentrated water tank that loops through the pipe connection, concentrated water tank is connected to concentrated water outlet pipe on the RO host computer, be provided with concentrated water reflux pipeline on the concentrated water outlet pipe, be provided with the reflux control valve on the concentrated water reflux pipeline, the inlet channel of booster pump is connected to the other end of concentrated water reflux pipeline.

As shown in figure 1, the booster pump pressurizes the pretreated water filtered by the primary filtering device and the secondary filtering device to the pressure required by the RO host, the pretreated water can be separated into primary pure water and concentrated water through the filtration of the reverse osmosis module in the RO host, and the primary pure water and the concentrated water are respectively discharged into the pure water tank and the concentrated water tank, when the membrane in the RO host is required to be washed, a reflux control valve on a concentrated water reflux pipeline is opened, the concentrated water in the concentrated water outlet pipeline flows into the concentrated water reflux pipeline, so that a certain amount of concentrated water flows back into the water inlet pipeline of the booster pump, is mixed with the pretreatment water and enters the RO host after being pressurized, and the concentration of the pretreatment water is increased, so that the water inflow of the membrane can be increased, the flow rate of the water in the membrane can be increased, the blocking probability of the membrane is reduced, the service life of the membrane is prolonged, and the water yield can be ensured after long-time operation.

Specifically, as the concentration of the pretreatment water is increased, if the membrane is operated for a long time, although the membrane blocking situation is optimistic, the membrane is far beyond the service life under the common condition (concentrated water reflux is not used), so that the water production conductivity of the membrane is slightly improved, the conductivity of the pure water after filtration is increased in a qualified range (the conductivity is less than or equal to 0.01 mS/m) until the service life is used up after the membrane is failed. ‌ A

Specifically, the raw water pump is arranged outside the raw water tank, so that active water supply is realized.

Specifically, be provided with the delivery pump outside the pure water tank, carry the pure water in the pure water tank to the water point, and be provided with manometer and relief valve on its pipeline.

Specifically, an automatic flushing electromagnetic valve and a waste water regulating valve are arranged on a concentrated water outlet pipeline, when the device is started, the waste water regulating valve is firstly closed, the automatic flushing electromagnetic valve is opened, external clean water enters the pipeline, the pipeline and the membrane in the device are reversely flushed, the waste water regulating valve is closed after flushing, and the concentrated water enters the concentrated water tank again.

Specifically, the wastewater regulating valve can control the concentrated water discharge to regulate the pressure required by reverse osmosis, and the reverse osmosis membrane needs to have certain pressure and pure water has certain water yield.

As shown in fig. 1, in this example, preferably, the primary filtering device includes a quartz sand filter and an activated carbon filter, the quartz sand filter is connected to the raw water tank through a pipe, the quartz sand filter is connected to the activated carbon filter, the activated carbon filter is connected to the secondary filtering device, specifically, raw water sequentially passes through the quartz sand filter and the activated carbon filter, and larger particulate matters such as suspended matters, colloid, silt, metal particles, microorganisms and the like in the raw water are filtered.

Specifically, when back flushing is carried out, the quartz sand filter and the activated carbon filter discharge the wastewater to a sewer, and if the wastewater has recycling value, the wastewater can be singly collected by using a water tank.

As shown in fig. 1, in this example, preferably, the secondary filter device is a precision filter, the precision filter is connected with a booster pump through a pipeline, the concentrated water backflow pipeline is connected with the pipeline, and smaller suspended matters, colloid, sediment, metal particles, microorganisms and the like in the water are further filtered through the precision filter to form pretreated water.

Specifically, the precision filter may be a conventional precision filter device such as a PAPE microporous precision filter, a titanium rod filter, a polyethersulfone filter element, a polytetrafluoroethylene filter element, a microporous membrane cartridge filter, etc.

As shown in FIG. 1, in this example, preferably, liquid level switches are arranged in the original water tank, the pure water tank and the concentrated water tank, and the liquid level in each water tank is detected to realize the start and stop of the whole primary pure water equipment.

As shown in fig. 1, in this example, preferably, the water inlet pipe and the water outlet pipe of the booster pump are both provided with pressure protection switches, that is, the water inlet pipe is a low-pressure protection switch, when the current treatment water pressure is insufficient, the opening of the booster pump is controlled, the water outlet pipe is a high-pressure protection switch, and when the current treatment water pressure is too high, the booster pump is closed.

As shown in FIG. 1, in this example, it is preferable that a booster pump return pipe is provided between the water inlet and outlet pipes of the booster pump, and a return valve is provided on the booster pump return pipe, so that damage to the rubber ring in the RO host caused by excessive instantaneous water pressure when the booster pump is started can be avoided.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (6)

1. A primary pure water equipment, characterized in that: it comprises a raw water tank, a primary filter, a secondary filter, a booster pump, an RO main unit, a pure water tank, and a concentrated water tank connected in sequence by pipes, wherein the concentrated water outlet pipe of the RO main unit is connected to the concentrated water tank, a concentrated water return pipe is provided on the concentrated water outlet pipe, a return control valve is provided on the concentrated water return pipe, and the other end of the concentrated water return pipe is connected to the inlet pipe of the booster pump. 2. The primary pure water equipment according to claim 1, characterized in that: the primary filtration device includes a quartz sand filter and an activated carbon filter, the quartz sand filter is connected to the raw water tank through a pipeline, the quartz sand filter is connected to the activated carbon filter, and the activated carbon filter is connected to the secondary filtration device. 3. The primary pure water equipment according to claim 1, characterized in that: the secondary filtration device is a precision filter, the precision filter is connected to a booster pump via a pipeline, and the concentrated water return pipeline is connected to the pipeline. 4. The primary pure water equipment according to claim 1, characterized in that: a level switch is provided in each of the raw water tank, the pure water tank and the concentrated water tank. 5. The primary pure water equipment according to claim 1, characterized in that: pressure protection switches are provided on the inlet and outlet pipes of the booster pump. 6. The primary pure water equipment according to claim 1, characterized in that: a booster pump return pipe is provided between the inlet and outlet pipes of the booster pump, and a return valve is provided on the booster pump return pipe.