KR20070103096A - Second grade pure water production system - Google Patents

Abstract

A purifying apparatus is provided to extend the lifetime of a membrane filter having a porous membrane, by cleaning the membrane filter using valves, sensors, and pipes, and to supply uniformly clean water by counting an operation time of a second purifying apparatus and a use time of each filter. A feed valve(1) is joined to a first water pipe(P1) to control the amount of input water. A purifying bath is joined to a fifth water pipe(P5) to store purified water. A temperature sensor(5), an inlet valve(7), a first pressure sensor(9), and a high pressure sensor(11) are respectively positioned on a second water pipe(P2) and a third water pipe(P3), which are connected to a pretreatment filter(3). A second pressure sensor(13) is positioned on a fourth water pipe(P4) connected to the high pressure pump. A drain valve(17) connects the fourth water pipe and a sixth water pipe(P6) positioned at the rear of a membrane filter(15). An outlet valve(19) is connected to the sixth water pipe and a seventh water pipe(P7) of a bypass structure. The valves, the sensors, and the pipes perform remove external particles from a membrane filter and clean the membrane filter.

Description

Water purifier {second grade pure water production system}

Figure 1a is a block diagram of a secondary water purifier according to the present invention.

Figure 1b is a perspective view of the secondary water purifier according to the present invention.

Figure 2a is a flow chart of the operation method of the secondary water purifier according to the present invention.

Figure 2b is a flow chart of freeze protection of the secondary water purifying apparatus according to the present invention.

Explanation of reference numerals for main parts of drawing

1: FEED valve 3: pretreatment filter

5: temperature sensor 7: INLET valve

9: pressure sensor 11: high pressure pump

13: pressure sensor 15: membrane filter

17: drain valve 19: OUTLET valve

21: water tank 23: level control sensor

The present invention relates to a water purification device, in particular a secondary water purification device configured to have a water purification system for the efficient use of the equipment, such as extending the life of the membrane filter, freeze protection and filter time counter.

In general, water purifiers used in various buildings, schools, and the like have been used to purify supply water (time water or ground water) supplied directly to a building.

Such water purifying apparatuses can be broadly divided into activated carbon adsorption, filtration, ultra-filter (UF), nano-filter (NF), reverse osmosis (RO), and the like according to water purification performance and characteristics.

In particular, the water purification device using the membrane is to remove the contaminants through the micropores of the membrane to filter the contaminants by pressing one side with a certain water pressure to push water to the other side of the membrane.

Recently, the reverse osmosis secondary water purification device to maximize the water purification capacity is used, in this case, the effective pressure is not achieved because the filtration resistance pressure of the membrane to perform the water purification is large.

Therefore, since most of the water pressure is smaller than the pressure of the filtration resistance of the membrane at a pressure of 5 ~ 15psi (0.35 ~ 1.06kgf / cm ² ), the pressure is reduced by using a high pressure pump.

However, if the pressure is set too high, the membrane performance cannot be maintained, thereby increasing the pressure in a range that does not reduce the filtration performance of the membrane filter. In addition, even if the pressure is filtered to maintain the performance of the membrane filter, the pressure is increased as it passes through the membrane filter, thereby reducing the performance of the membrane filter.

Therefore, in order to control the increasing pressure, water that cannot pass through the membrane filter must be discharged to lower the pressure to maintain the performance of the membrane filter. The concentrated water discharged without passing through the membrane was discharged as it is, resulting in waste of water.

On the other hand, there may be inconvenience and waste of water resources that must be artificially opened and closed by a valve located at the raw water input unit to prevent the production of waste water by the pressure of raw water without the operation of the high pressure pump systemically.

In addition, since the water purification device in the building of a general heating system has no means of preparing for freezing waves, it requires a high cost of replacing and repairing the whole freezing filter and the second water purification device, and adding insulation and heating wire as a freezing prevention means. The reality is that the workforce and cost must be added separately.

Furthermore, in order to increase the efficiency and extend the life of the expensive membrane filter, the first water purification with higher and uniform filtration degree is required by the proper use of the pretreatment filter and the correct replacement cycle, but the operation time and the filter replacement time of the secondary water purification device It was not easy to manage because it did not know the usage period correctly.

Therefore, it provides easy management by countering the service life of the pretreatment filter and the membrane filter and the secondary water purifier operation time to protect the membrane filter with the high and uniform filtration degree of the pretreatment filter.

It is possible to significantly reduce the cost by constructing a cleaner function system to prevent adhesion of scale, foreign substances, etc. in the membrane filter and to prolong its life.

There has been a demand for the emergence of secondary water purifiers configured to prevent freezing without significant investment.

The present invention has been devised to satisfy the above-mentioned requirements. In particular, the membrane is provided with a cleaner function in a general water purification system composed of a pretreatment filter, a membrane filter, a high pressure pump, and a water pipe connecting them. It is an object of the present invention to provide a water purifying device that can significantly prolong the life of a membrane filter by preventing it from sticking in the filter.

Another object of the present invention is to provide a water purification device that provides a high and uniform water purification and easy maintenance by counting the service life of the pretreatment filter and the membrane filter and the operation time of the secondary water purification device.

Another object of the present invention is to provide a secondary water purification device designed to prevent freezing by using a temperature sensor.

Another object of the present invention is to provide a water purification device that can efficiently use water resources by automatically opening and closing the INLET valve when the high pressure pump is operated to prevent mass production of waste water.

As a configuration of the secondary water purifying apparatus according to the present invention for achieving the above object,

A water purification device comprising a pretreatment filter (3), a membrane filter (15), and a water pipe (Pn) that connects them to set a predetermined flow path so that raw water is purified, wherein the feed valve (1) of the raw water inlet connection portion and the pretreatment filter The temperature sensor 5 and the INLET valve 7 are positioned on the water pipes P1 and P2 connecting the front and rear ends of (3), and the pressure sensor 9 and the high pressure pump 11 located in the water pipe P3. ):

A pressure sensor 13 on a water pipe P4 connected to the rear of the high pressure pump 11;

Raw water obtained through the water pipe (P4) is stored in the water purification tank (21) connected to the water pipe (P5) at the rear of the membrane filter (15);

The purified water which is not purified is drained through the drain valve 17 connected to the water pipe P6;

The OUTLET valve is located in the water pipe (P7) and has a structural characteristic that is bypassed with the water pipe (P6).

At this time, the upper end of the water pipe (P6, 7), the drain valve 17 for adjusting the displacement is located, it is preferable to include an OUTLET valve for removing the foreign matter of the membrane filter and the cleaner function of the cleaning operation.

When the temperature sensor 5 located in the water pipe P2 is lower than the set temperature, it is preferable to open the INLET valve 7 and the OUTLET valve 19 for a predetermined time and automatically drain by the pressure of the raw water.

The pressure sensors 9 and 13 measure the pressure difference between the water passing through the water pipes P3 and 4 to determine the leakage and the number of stages, and to warn the user, and the high pressure pump 11 when the pressure is lower than the predetermined pressure or higher than the predetermined pressure. It is preferable to stop the operation.

It is preferable to close the opening of the INLET valve of the water pipe P3 and stop the driving of the high pressure pump 11 after a predetermined time before the predetermined time of the driving start of the high pressure pump 11.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the examples presented are for illustrative purposes only and the technical part of the present invention is not limited by the examples.

Figure 1a is a block diagram of the water supply secondary water purification apparatus according to the present invention, the pre-treatment filter (3), high pressure pump (11), membrane filter (15), purified water tank 21 and sequentially connected to the raw water A plurality of water pipes (Pn) for setting the flow path to achieve this is provided.

More specifically, referring to FIG. 1A, the FEED valve 1 and the pretreatment filter 3 are connected by a water pipe P1, and a temperature sensor is located at a rear end of the pretreatment filter 3 among the water pipes P2. (5) is located.

And the inlet valve 7 and the high pressure pump 11 is connected to the water pipe (P3), the high pressure sensor 13 and the membrane filter 15 by the water pipe (P4), the membrane filter (by the water pipe (P5) 15) and the reservoir 21 has a configuration in which each is connected.

In addition, a bypass pipe (P7) for connecting the rear end of the membrane filter 15 and the water pipe (P6) is provided, the drain valve 17 for drainage control is mounted on the water pipe (P6) to drain the water to the outside And, the outlet pipe to the water pipe (P7) is configured to enable the cleaner function.

On the other hand, the reservoir 20 is a conventional, bar itself is made of a configuration that is equipped with a water level control sensor 23, the water level control sensor 23 is in the state of being electrically connected to the high-pressure pump (11) have.

Looking at the operation principle of the secondary water purification device according to the present invention configured as described above, when the water stored in the reservoir by the water level control sensor 23 is a low or high water level, the high-pressure pump 11 is driven or stopped.

In addition, the use time of the pretreatment filter and the membrane filter and the operation time of the secondary water purifier are counted to facilitate the replacement and management of the filter.

As described above, the water purifying apparatus according to the present invention, Figure 1b is a perspective view of the configuration of the system.

After opening the FEED valve 1 connected to the raw water line, the introduced raw water passes through the preliminary filtration step by the pretreatment filter 3, and then reaches the high pressure pump 11 to apply the membrane filter with a predetermined pressure. Filtration step of 15) is reached, a part of which is purified by the membrane filter and stored in the reservoir, and the concentrated water that has not passed through the membrane filter 15 due to the pressure difference is drained through the water pipe P6. do.

On the other hand, the pressure in the membrane filter 15 is rapidly reduced by opening the OUTLET valve 19 of the water pipe P7 for a predetermined time during the operation of the secondary water purifier for a predetermined time, while simultaneously draining water and foreign matter from the membrane filter. Clean.

As described above, the secondary water purifying device according to the present invention is a system flow chart in which a cleaner function is designed to prevent the aging and scaling of the membrane filter 15. FIG.

And, the flow sensor to prevent the freezing of the filter and the device by opening the INLET valve 7 and OUTLET valve 19 for a predetermined time when the temperature sensor (5) located in the water pipe (P2) below a set temperature. Is shown in Figure 2b.

The water purifying device according to the present invention has a cleaning effect of the filter using a cleaner function, so that its life can be significantly extended.

It is easy to provide uniform water purification and easy maintenance by countering the usage time of each filter and the operation time of the secondary water purifier.

Only when the high pressure pump is operated, the INLET valve is opened and closed to prevent mass production of wastewater by the raw water pressure, thereby increasing efficiency.

Manufacturing cost and management cost of the secondary water purifier which is designed to prevent freezing by opening the INLET valve 7 and OUTLET valve 19 for a predetermined time when the temperature of water is measured without the heat insulator and auxiliary material such as heating wire. There is an advantage that can greatly reduce.

Claims (3)

In the water purifying apparatus having a pretreatment filter (3), a membrane filter (15), and a water pipe (Pn) for setting a predetermined flow path for connecting raw water to purified water, FEED valve 1 is fastened to one end of the water pipe (P1) to perform the water supply control; A water tank that is fastened to the other end of the water pipe P5 to store purified water; A temperature sensor (5), an INLET valve (7), a pressure sensor (9) and a high pressure pump (11) located on water pipes (P2, P3) connected to the rear end of the pretreatment filter (3), respectively; A pressure sensor 13 positioned on the water pipe P4 connected to the rear of the high pressure pump 11; A drain valve 17 for connecting the water pipe P4 and the water pipe P6 positioned at the rear end of the membrane filter 15 to control the water flow rate; Secondary water purifier, characterized in that to perform the cleaner function of removing foreign substances and cleaning of the membrane filter by the OUTLET valve 19 connected to the water pipe (P6) and the water pipe (P7) of the bypass structure The method of claim 1, By measuring the temperature of the water by the temperature sensor 5 in the water pipe (P2), when the temperature is less than the set temperature, the INLET valve 7 and the OUTLET valve 19 for a predetermined time to prevent freezing by circulation of water Secondary water purifier The method of claim 1, Secondary water purification device, characterized in that to produce ultrapure water by connecting the D / I filter after the water pipe (P5) of the membrane filter (15)

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