LIQUID PURIFICATION DEVICE

Abstract

The invention relates to the liquid purification devices, provided for water purification from local sources, for example, a holes, a wells, etc. and/or a municipal sources for domestic and/or drinking water supply and is intended for use in living conditions and in the country and a garden plots.

The liquid purification device consisting of the body frame that includes the upper and the lower filtering zones with the filter medium inside, the feed liquid flow changing direction means, the air vent means for air from the lower filtering zone removal and having the air outlet element located in the upper wall of the air vent means, characterized in that the device is configured for air removal from the lower filtering zone by an upward feed liquid flow of at the beginning of the filtration process during the filling of the device with feed liquid and the means for changing the direction of feed liquid flow containing the filter medium that is simultaneously the lower filtering zone and located inside the device, is formed by the chamber of variable shape and size with the filter medium and with the inlet holes located in the upper or the upper and the lower parts of the side wall of this chamber and the vertically oriented inner annular space that is in liquid communication with the chamber through the inlet holes located in the upper or the upper and the lower parts of the side wall of this chamber and formed by the inner side wall of the body frame of the liquid purification device and the outer side wall of the chamber and tapers to the lower part of the body frame of the liquid purification device, that contains the filter material, and is designed to pass feed liquid from the upper filtering zone into the chamber through the inlet holes in the radial direction.

Claims

1. The liquid purification device consisting of the body frame that includes the upper and the lower filtering zones with the filter medium inside, the means for changing the direction of feed liquid flow, the air vent means for air from the lower filtering zone removal and having the air outlet element located in the upper wall of the air vent means, characterized in that the device is configured for air removal from the lower filtering zone by an upward feed liquid flow of at the beginning of the filtration process during the filling of the device with feed liquid and the means for changing the direction of feed liquid flow containing the filter medium that is simultaneously the lower filtering zone and located inside the device, is formed by the chamber of variable shape and size with the filter medium and with the inlet holes located in the upper or the upper and the lower parts of the side wall of this chamber and the vertically oriented inner annular space that is in liquid communication with the chamber through the inlet holes located in the upper or the upper and the lower parts of the side wall of this chamber and formed by the inner side wall of the body frame of the liquid purification device and the outer side wall of the chamber and tapers to the lower part of the body frame of the I iquid purification device, that contains the filter material, and is designed to pass feed liquid from the upper filtering zone into the chamber through the inlet holes in the radial direction.

2. The liquid purification device according to claim 1 characterized in that the air vent means is made of the base and the vertical part, and the base of the air vent means is connected to the upper part of the chamber of the means for changing the direction of feed liquid flow.

3. The liquid purification device according to claim 2 characterized in that the base of the air vent means has side walls resistant to liquid and air.

4. The liquid purification device according to claim 1 or 2 characterized in that the upper edge of the vertically oriented inner annular space extends at the level of the top of the side wall of the base of the air vent means.

5. The liquid purification device according to claim 1 characterized in that the lower part of the chamber of the means for changing the direction of feed liquid flow has at least one sealing element.

6. The liquid purification device according to claim 5 characterized in that at least one sealing element is integrally formed with the side wall of the chamber.

7. The liquid purification device according to claim 5 characterized in that at least one sealing element is formed as a separate element connected to the side wall of the chamber.

8. The liquid purification device according to claim 1 or 5 characterized in that the upper edge of the vertically oriented inner annular space coincides with the boundary layer of the filter material of the upper filtering zone, and from the bottom it coincides with the bottom wall of the body frame of the liquid purification device.

9. The liquid purification device according to claim 2 characterized in that the base of the air vent means is integrally formed with the upper part of the chamber of the means for changing the direction of feed liquid flow.

10. The liquid purification device according to claim 1 characterized in that the air vent element of the air vent means is formed as the outlet hole for forced-feed air vent having a diameter that obstructs liquid flow down from the top through said outlet hole.

11. The liquid purification device according to claim 10 characterized in that the outlet hole diameter is less than 1.2 mm and preferably the outlet hole diameter should be in the range of 0.4 to 1.0 mm.

12. The liquid purification device according to claim 1 characterized in that the air vent element of the air vent means is made in the form of a valve opening upward under the pressure of an air bubble and closing down under the pressure of liquid.

13. The liquid purification device according to claim 12 characterized in that the air vent element can be made in the form of a membrane valve.

14. The liquid purification device according to claim 12 characterized in that the air vent element can be made in the form a petal valve.

15. The liquid purification device according to claim 1 characterized in that the air vent element can be made in the form of a capillary having a diameter sufficient to air passage and obstructing liquid flow down, preferably less than 1.2 mm.

16. The liquid purification device according to claim 1 characterized in that the filter medium may include sorption materials, such as an activated carbon, an activated carbon fiber, an ion exchange resins, an ion exchange fibers, a hollow fiber elements, a mesh filter materials, a mineralizing materials and a combinations of these materials and elements.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Essence of the invention is explained in greater details in the drawings in which

[0030] FIG. 1 depicts the liquid purification device.

[0031] FIG. 2 depicts the upper filtering zone with the vertical part of the air vent means and the air vent element made in the form of a hole with the diameter of 1 mm, for example.

[0032] FIG. 3 depicts the upper filtering zone with the vertical part of the air vent means and the air vent element made in the form of a valve.

[0033] FIG. 4 depicts the upper filtering zone with the vertical part of the air vent means and the air vent element made in the form of a capillary.

DETAILED DESCRIPTION OF THE INVENTION

[0034] In the claimed invention the liquid purification device (FIG. 1) consists of the body frame 1 comprising of the main part (not presented in figures) and the lid 17 in which the means for source liquid inlet 18 are made in the form of the holes. The upper filtering zone 2 comprising the filter medium 3 made from, for example, and not limited to an activated carbon, an activated carbon fiber, an ion exchange resin, an ion exchange fiber or a mixture of these sorbents, and the lower filtering zone 4 including the hollow fiber element 5 and the sorption filter material 22, the air vent means 6 and the means for changing the direction of feed liquid flow 7 are located in the body frame 1. The outlet holes for purified liquid 19 are provided in the bottom wall of the main part of the body frame 1 of the liquid purification device.

[0035] The means for changing the direction of feed liquid flow 7, comprising the filter medium 3 which is the sorption filter material 22 is simultaneously the lower filtering zone 4, and is formed by the chamber with variable shape and size 9 with the inlet holes 10 located in the upper or the upper and the lower parts of side wall of this chamber 9 and the vertically oriented inner annular space 8 that is in liquid communication with the chamber 9 through the inlet holes 10 and is formed by the inner side wall of the body frame 1 of the liquid purification device and the outer side wall of the chamber 9. The upper edge of the vertically oriented inner annular space 8 coincides with the boundary layer of the filter material 22 of the upper filtering zone 2, and at the bottom it coincides with the bottom wall 11 of the body frame 1 of the liquid purification device.

[0036] Opposed to the channel for passage of feed liquid in the liquid purification device of the closest analogue, the vertically oriented inner annular space 8 of the claimed invention enters the lower filtering zone 4 and is used not only for feed liquid passage from the upper filtering zone 2 into the chamber 9 through the inlet holes 10 in the radial direction, but also for liquid purification, since it contains the sorption filter material 22.

[0037] The lower part of the chamber 9 of the means for changing the direction of feed liquid flow 7 has at least one sealing element 12 which can be made, for example, integrally with the side wall of the chamber 9, or can be made as a separate element connected to the side wall of the chamber 9.

[0038] The lower filtering zone 4 is located inside the chamber 9.

[0039] The inlet holes 10 for feed liquid formed in the upper part of the chamber 9 are located below the upper edge of the hollow fibers of the hollow fiber element 5, the inlet holes 10 formed in the lower part of the chamber 9 are located closer to the sealing element 12. The sorption filter material 22 is made from, for example, an ion exchange fiber or a mixture of an ion exchange fiber and an activated carbon, and is located to the level of the upper edge of the hollow fibers of the hollow fiber element 5 inside the chamber 9.

[0040] The air vent means 6 consists of the base 13 and the vertical part 14, the side walls of which are resistant to liquid and to air. The air vent means 6, for example, can be welded or fitted in the upper part of the chamber 9 of the means for changing the direction of feed liquid flow 7 or can be integrated with the upper part of the chamber 9 of the means for changing the direction of feed liquid flow 7.

[0041] The air outlet element of the air vent means 6, for example, can be made in the form of the outlet hole 15 (FIG. 1, 2) for forced-feed air vent having a diameter that obstructs the liquid flow down from the top through the said outlet hole 15. The diameter of the outlet hole 15 should be less than 1.2 mm and preferably should be in the range from 0.4 to 1.0 mm.

[0042] The air vent element of the air vent means 6, for example, can be made in the form of a valve 20 (FIG. 3) opening upward under the pressure of an air bubble and closing down under the pressure of liquid, also in the form of the membrane valve or in the form of the petal valve. Also the air vent element of the air vent means 6 can be made in the form of the capillary 21 (FIG. 4) having a diameter sufficient to air passage and obstructing liquid flow down.

[0043] The inlet holes 18 for source liquid are provided in the lid 17 of the liquid purification device. The hole 16 is formed in the central part of the lid 17 and connected to the air vent element.

[0044] Additionally the inlet holes 18 for source liquid can be made in the upper portion of the side walls of the main part of the body frame 1 of the liquid purification device.

[0045] The outlet holes for purified liquid 19 are provided in the bottom wall of the main body part 1 of the liquid purification device.

[0046] Within the features of the invention the liquid purification device described above functions as follows. The liquid purification device is located between the source liquid tank and the purified liquid tank. The source liquid tank (not presented in figures) is filled with source liquid, and opposed to the closest analogue solution, the height of source liquid column can be any. Source liquid flows into the upper filtering zone 2 through the inlet holes 18 in the lid 17, then flows from up to down through the filter material 22 and passes into the vertically oriented inner annular space 8 of the lower filtering zone 4. After passing from up to down at least a part of the vertically oriented inner annular space 8, liquid flows radially through the inlet holes 10 into the chamber 9 of the means for changing the direction of feed liquid flow 7. Inside the chamber 9 liquid flows partially upward and simultaneously radially flows into the hollow fibers by means of capillary forces. In this case, purified liquid exits the liquid purification device through the outlet holes for purified liquid 19.

[0047] At the same time, air contained in the hollow fiber element 5 moves upward and accumulates in the base 13 of the air vent means 6 due to that part of feed liquid flows upward. An air bubble is formed inside the base 13 of the air vent means 6, which gradually passes into an elastic form. The air vent means 6 is performed in such a way that provides a gradual upward draft of the air bubble within the vertical part 14 of the air vent means 6 and through the air vent element (FIGS. 1 and 2), 20 (FIG. 3), 21 (FIG. 4)) into the external environment. As previously indicated, the sorption filter material 22 in addition to the hollow fiber element 5 is arranged inside the chamber 9, which facilitates a better lifting upward of feed liquid entering the chamber 9 through the inlet holes 10 by capillary forces. Thus, the movement of liquid along the lower filtering zone 4 is directed so that liquid flow provides the upward motion of air flow, and liquid pressure and static voltage force an air bubble upward from the liquid purification device. In this case, since liquid inside the chamber 9 flows both radially and upward, the entire lower filtering zone 4 is involved in the filtration process, that further improves liquid purification efficiency. In this case since liquid moves first downward then radially and upward in the lower filtering zone 4, and all liquid movement is accompanied by a filtration process, then an increase in the degree of liquid purification is achieved.

[0048] Thus, at the initial moment of the filtration process, almost the entire volume of air is vented from the lower filtering zone 4 without contact with liquid, which increases the speed of the filtration process and increases the degree of liquid purification.