KR101443909B1 - Ro type purifier - Google Patents

Abstract

A reverse osmosis type water purifier provided with a back pressure preventing function is disclosed. The disclosed invention relates to a reverse osmosis filter for purifying raw water introduced from one side by reverse osmotic pressure and discharging purified water having dissolved impurities removed and concentrated water having increased concentration of dissolved impurities, An ion exchange filter for lowering the concentration and a flow tube for directly introducing the concentrated water having a lower concentration of dissolved impurities in the ion exchange filter into the reverse osmosis filter. The present invention can be purified by introducing the concentrated water produced by the filtration action of the reverse osmosis filter into the reverse osmosis filter together with the raw water after the concentration of the dissolved impurities is lowered in the ion exchange filter.

Reverse osmosis filter, ion exchange filter, flow tube, flow control means, ball,

Description

Reverse osmosis water purification system {RO TYPE PURIFIER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reverse osmosis water purification apparatus, and more particularly, to a reverse osmosis water purification apparatus that prevents reverse flow due to osmotic pressure and diffusion in a membrane filter that is purified by reverse osmosis.

Generally, a water purifier is a water purifier for filtering raw water supplied from a raw water supply source to be used for potable water for drinking by a user or for other purposes.

On the other hand, when reverse osmosis (RO) membrane module is used as filtering means of the water purifier, some of the raw water supplied to the RO membrane module is purified by the membrane to be purified water and the remainder is concentrated .

At this time, the purified water can be collected and collected for use in the collector pipe, but it can be consumed. However, since the concentrated water is not used and is discarded on the drain pipe, there is a problem that the raw water can not be efficiently purified.

A technique capable of solving the waste of raw water generated in an RO filter of a general water purifier is disclosed as a "reverse osmosis water purification apparatus without wastewater" in Registration Utility Model No. 20-0265610.

Here, as the prior art, the "reverse osmosis pressureless water purification apparatus without waste water" prevents condensed water generated from an RO filter from being filtered through a wastewater reprocessing filter and then combined with raw water having passed through a high turbidity filter in a combined water tank, have.

However, the prior art unnecessarily places a high turbidity filter in front of the sediment filter in the present state of the art in which a high turbidity filter is not required. In other words, the sediment filter can simultaneously perform high turbidity functions, and the high turbidity function is a function required in overseas countries and is not necessary in the domestic market.

In the prior art, salt (NaCl) is used to recycle the ion exchange filter. However, it is more economical to use the ion exchange filter, which is low in cost, considering the labor cost and the environmental cost, as a disposing technique for recycling the ion exchange filter. In the prior art, the combined tank was installed in front of a high turbidity filter and a sediment filter. That is, the concentrated water passes through the pre-carbon filter before it is drained in the RO filter, and it is not desirable to return it to the preceding filter and to flow it back into the already passed pre-carbon filter.

In other words, since the concentrated water does not pass through the RO filter and ions are concentrated, it is more reasonable that the channel is connected after the ion exchange filter and before the RO filter and after the pre-carbon filter. Here, if a combined tank is required, it is necessary to connect it after the pre-carbon filter before the RO filter.

DISCLOSURE OF THE INVENTION The present invention has been conceived in order to solve the problems of the prior art described above, and it is an object of the present invention to remove dissolved impurities of concentrated water from an ion exchange filter to prevent concentrated water produced by filtering action of an RO filter from being discharged as wastewater, A reverse osmosis water purification device capable of directly passing the RO filter through the RO filter and recycling it as raw water to be purified.

The reverse osmosis purification apparatus according to the present invention comprises a reverse osmosis filter for purifying raw water introduced from one side by reverse osmotic pressure and discharging purified water having dissolved impurities removed and concentrated water having increased concentration of dissolved impurities, An ion exchange filter for lowering the concentration of dissolved impurities in the concentrated water discharged from the filter, and a flow pipe for directly introducing the concentrated water having a lower concentration of dissolved impurities into the reverse osmosis filter in the ion exchange filter.

Here, a flow rate adjusting means is provided between the reverse osmosis filter and the ion exchange filter for adjusting the flow rate of the concentrated water flowing from the reverse osmosis filter to the ion exchange filter in accordance with the flow rate of the purified water discharged from the reverse osmosis filter .

The flow control means includes a valve body formed with a flow passage through which the concentrated water flows, one end of which is supplied with concentrated water and is discharged to the other side, a valve body having a cylindrical groove formed on one side wall of the flow passage, A ball disposed in the flow passage of the body for providing a flow resistance to the concentrated water or penetrating into the cylindrical groove by operation of a solenoid to increase the flow amount of the flow passage, and a valve for periodically actuating the solenoid to pass through the flow passage And a controller for periodically increasing the flow rate of the concentrated water.

At this time, a sediment filter and a pre-carbon filter are disposed at one side of the reverse osmosis filter to filter the raw water to be combined with the concentrated water having lowered dissolved impurities in the ion exchange filter.

In addition, the sediment filter and the pre-carbon filter are disposed in one case so that the raw water flowing in the reverse osmosis filter passes through them in order to constitute a composite filter.

The reverse osmosis water purification device according to the present invention configured as described above has a function of removing the dissolved impurities of the concentrated water from the ion exchange filter to prevent the concentrated water produced by the filtration action of the RO filter from being discharged as wastewater, It is possible to obtain the effect of being able to be recycled as raw water to be purified.

And, as the concentrated water reducing valve, the flow regulating means is installed in the water purifier, so that the concentrated water is reduced by about half. Therefore, the proposed water purifier system has a longer lifetime because the ion exchange filter treats less concentrated water than conventional water purifier.

Hereinafter, preferred embodiments of the reverse osmosis purification apparatus according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, preferred embodiments of a reverse osmosis purification apparatus according to the present invention will be described with reference to the accompanying drawings. In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as an example, and various embodiments may be implemented through the present invention.

Example

FIG. 1 is a system diagram of a reverse osmosis water purifying apparatus according to an embodiment of the present invention, FIG. 2 is a detailed sectional view of the flow adjusting means of FIG. 1, and FIG. 3 is an operational view of the flow adjusting means shown in FIG.

As shown in FIGS. 1 to 3, the reverse osmosis pressure water purifier according to an embodiment of the present invention is characterized in that the reverse osmosis pressure water purifier according to the present invention is a reverse osmosis pressure water purifier which purifies raw water introduced from one side by reverse osmosis, And an ion exchange filter 120 for lowering the concentration of dissolved impurities in the concentrated water discharged from the reverse osmosis filter 100.

Here, the ion exchange filter 120 may include a flow pipe 122 for directly introducing the concentrated water having a lower concentration of dissolved impurities into the reverse osmosis filter 100, and the flow pipe 122 may include the reverse osmosis filter 100, The raw water pipe 110 for supplying the raw water to the reverse osmosis filter 100 is connected directly to the reverse osmosis filter 100 so that the concentrated water having passed through the ion exchange filter 120 is directly passed through the reverse osmosis filter 100 Can be introduced.

That is, the concentrated water from which the dissolved impurities are removed from the raw water and the ion exchange filter 120 is introduced into the reverse osmosis filter 100, and is separated into the purified water and the concentrated water by the reverse osmotic action in the RO membrane of the reverse osmosis filter 100 , The concentrated water flows into the ion exchange filter 120 again in the reverse osmosis filter 100 and the purified water flows into the post carbon filter 125 connected to the reverse osmosis filter 100 to be filtered, 127 < / RTI >

The flow rate of the concentrated water flowing from the reverse osmotic pressure filter 100 to the ion exchange filter 120 is set to a flow rate of the purified water discharged from the reverse osmosis filter 100 between the reverse osmosis filter 100 and the ion exchange filter 120, The flow rate control means 130 may be provided.

At this time, the flow rate control means 130 is for reducing the flow rate of the concentrated water flowing out of the reverse osmosis filter 100 to reduce the flow rate of the concentrated water flowing into the ion exchange filter 120, The concentration of the concentrated water increases and the flow rate of the purified water flowing toward the postal carbon filter 125 in the reverse osmosis filter 100 is prevented from being significantly reduced.

The flow regulating means 130 includes a flow passage 133 through which the concentrated water flows and is discharged to the other side. A flow passage 133 through which the concentrated water flows is formed in the flow passage 133, A valve body 132 having a valve body 132 formed therein and a flow passage 133 provided in the flow passage 133 of the valve body 132 to provide flow resistance to the concentrated water or to move into the cylindrical groove 134 by operation of the solenoid 135. [ A ball 137 which increases the flow amount of the flow passage 133 and a control section 140 which periodically increases the flow amount of the concentrated water passing through the flow passage 133 by periodically operating the solenoid 135 .

When the flow rate of the concentrated water discharged from the reverse osmosis filter 100 is reduced, the purification efficiency of the reverse osmosis filter 100 may be reduced and the discharge of the purified water may be reduced. The enriched water having increased concentration in the ion exchange filter 120 is operated by the solenoid 135 to periodically increase the flow amount of the concentrated water to the ion exchange filter 120 side.

Here, the ball 137 blocks the flow passage 133 of the valve body 132 and is moved by the solenoid 135 toward the cylindrical groove 134 side of the valve body 132 to pass through the flow passage 133 And the control unit 140 may include a microcontroller programmed to periodically actuate the solenoid 135. For example,

A sediment filter 142 and a free carbon filter 143 are disposed at one side of the reverse osmosis filter 100 to filter the raw water to be combined with the concentrated water having low dissolved impurities in the ion exchange filter 120.

In addition, the sediment filter 142 and the pre-carbon filter 143 are provided in one case so that the raw water flowing into the reverse osmosis filter 100 sequentially passes through them to form a composite filter 145, .

1 is a block diagram of a reverse osmosis water purification apparatus according to an embodiment of the present invention.

2 is a detailed sectional view of the flow rate adjusting means of FIG.

3 is an operation diagram of the flow rate control means shown in Fig.

DESCRIPTION OF THE REFERENCE NUMERALS

100: reverse osmosis filter 110: raw water pipe

120: ion exchange filter 122: flow tube

125: Post carbon filter 127: Main tank

130: flow regulating means 132: valve body

133: flow passage 134: cylindrical groove

135: Solenoid 137: Ball

140: Control section 142: Sediment filter

143: free carbon filter 145: composite filter

Claims (5)

A reverse osmosis filter for purifying the raw water introduced from one side by reverse osmotic pressure and discharging purified water having dissolved impurities removed and concentrated water having a higher concentration of dissolved impurities; An ion exchange filter for removing dissolved impurities from the concentrated water discharged from the reverse osmosis filter to lower the concentration; And Wherein the ion exchange filter includes a flow tube for directly introducing concentrated water having a lower concentration of dissolved impurities in the ion exchange filter into the reverse osmosis filter, Wherein the reverse osmosis filtration device comprises a flow rate regulating means for regulating the flow rate of the concentrated water according to the flow rate of the purified water discharged from the reverse osmosis filter. delete The method according to claim 1, Wherein the flow regulating means includes a valve body having a flow passage formed therein for flowing concentrated water to flow to the other side and having a cylindrical groove formed in one side wall of the flow passage; A ball disposed in the flow passage of the valve body to provide a flow resistance to the concentrated water or to enter the cylindrical groove by operation of a solenoid to increase the flow amount of the flow passage; And And a control unit periodically activating the solenoid to periodically increase the flow amount of the concentrated water passing through the flow passage. The method according to claim 1, Wherein the one side of the reverse osmosis filter is provided with a sediment filter and a free carbon filter for filtering raw water to be combined with concentrated water having lowered dissolved impurities in the ion exchange filter. 5. The method of claim 4, Wherein the sediment filter and the pre-carbon filter are disposed in one case so as to pass the raw water flowing in the reverse osmosis filter in order, thereby constituting a composite filter.

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