KR930001915Y1 - Quick water filter bed - Google Patents

Abstract

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Description

Slope drainage of rapid filter paper

1 is a longitudinal sectional view of a rapid filter paper to which the present invention device is applied.

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3 is a side cross-sectional view showing the configuration and installation state of the device of the present invention.

Figure 4 is a front view showing the configuration and installation of the device of the present invention.

Figure 5 is a partial enlarged cross-sectional view showing the configuration and action of the exhaust valve according to the present invention.

* Explanation of symbols for main parts of the drawings

1: filter paper 1a: unit filter paper

2: Raw water collection 3: Flat bottom for raw water inflow

4: water purifier 5: flat bottom for water outflow and access inflow

6: first-class wear 7: drainage passage

8: filtration layer 8a: filtration slope

9: pressure chamber 10: water collection chamber

20 siphon tube 21 absorbing port

22: drain 30: siphon breaker

32: intake hole 40: exhaust valve

41 exhaust pipe 44 valve disc

47: float

The present invention relates to a slope drainage system during rapid filtration for automatically draining raw water located between the top of the washable water first-class wear and the slope of the filtration layer when the rapid filtration paper is washed.

In general, when the rapid filter is washed, the original water side installed at the first stage and the water purification side installed at the water purifier are closed, and the original water side installed at one end of the drainage passage and the water purification side installed at the water purification stage are installed at one end of the drain passage. By opening the drainage side, the raw water filled in the filter paper is drained out to the ground.

However, in the conventional rapid filter paper, the first-class weir separating the wash water drain passage in the center of the filter paper and the filtration layers on both sides thereof is provided at a predetermined height higher than the slope of the filtration layer. In the rapid filter paper having the low water level in the filter paper stays at the upper end of the first-class wear in the drainage stage of the raw water for the start of the washing, and thus the raw water at the top of the first-class wear occupies at the upper side of the slope of the filter layer. Will remain.

Therefore, when the used washing method, such as known when washing the rapid filter paper, is applied, since the supply of air and washed water through the filter layer is started to strongly disturb the filter layer, thus the flow rate of the supplied wash water This immediately increases the lowest water level located at the top of the first-class wear, causing the problem that the backwash water as much as the level increase overflows the first-class wear and flows out to the drainage passage to drain the filtrate together.

The present invention has been made in view of the problems of the conventional rapid filter paper as described above, by installing a siphon tube having a siphon breaker between the upper surface of the filter paper and the flushing water drainage passage to drain the centipede water for washing. By bringing the lowest water level closer to the top of the slope of the filtration layer, the water level on the top of the filtration slope has a predetermined delay time before reaching the first-class wear despite the increase of the water level due to the supply of air and wash water. The strong washing by the air and water is made to prevent the outflow of the filtration company flowing over the first-class wear, which will be described in detail by the accompanying drawings as follows.

1 and 2 is a cross-sectional view of the rapid filter paper with the slope drainage device according to the present invention, Figure 3 shows the configuration of the siphon tube by the device of the present invention, as shown therein, the upper side of the filter (1) A flat bottom side 3 for raw water inflow is installed on the upper side of the raw waste collection 2 arranged in the water purifier 4 and a flat bottom side 5 for purified water outflow and backwash water inflow is provided in the water purifier 4 disposed on the opposite side of the raw waste collection 2. And a pressure chamber (9) and a lower portion of the filtration layer (8) of the unit filter paper (1a) (1a) arranged with the backwash water drain passage (7) partitioned by first-class wear (6) (6). In the rapid filter paper in which the collection chamber 10 is connected, the slope drainage device according to the present invention is a siphon pipe bent in an inverted U shape on one side of the first-class wear (6) (6) of the unit filter paper (1a) (1a) One end of the siphon tube 20 having the expandable absorbent openings 21 provided with the respective 20 and 20, respectively, has a predetermined distance (approximately 50 above the slope 8a of each filter layer 8). mm), and the drain port 22 of the siphon tube 20 having a length extending downward from the absorber 21 is positioned on the drain passage 7 side.

The siphon breaker 30 and the exhaust valve 40 for releasing the siphon and discharging the air in the siphon tube 20 are connected to the positive portion of the siphon tube 20 arranged as described above.

As shown in FIG. 5, the exhaust valve 40 has an extended horizontal valve sheet 43 having an O-ring 42 formed on an upper side of the vertical exhaust pipe 41 connected to the siphon tube 20. A valve disc 44 is provided above the valve seat 43 in contact with the O-ring 42. The valve disc 44 which is brought into the upper portion of the lid 45 is elevated in accordance with the increase and decrease of the water level. A buoy 47 for raising and lowering the valve disc 44 is provided, and air inside the open exhaust pipe 41 of the valve disc 44 can be discharged outside the central support part 45a of the cover 45. An exhaust passage 48 is formed.

An upper end of the siphon breaker 30 bent in a magnetic shape is connected to one side wall of the exhaust pipe 41 of the exhaust valve 40 as described above, and the siphon breaker positioned above the slope 8a of the filtration layer 8 ( At the lower end of the 30, an intake hole 31 opened to a predetermined size is formed at approximately the same height as the absorption port 21 of the siphon tube 20.

In addition, although not shown in the drawings, the intake hole 32 and the lower end of the absorption port 21 of the siphon tube 20 are surrounded by a corrosion-resistant filtering net for preventing the suction of the filter medium.

In the drawings, reference numerals 23 and 24 and 25 show anchors and high information bolts for fixing the siphon tube 20 to the first-class wear 6, and 11 in FIGS. 1 and 2 show an air supply for washing. The air pipe and the distribution pipe for equally distributing the raw water supplied through the raw water flat bottom (3) in the area, 12 is the wash water drain side installed at one end of the drain passage (7), 13 is to show the inlet air supply pipe, respectively .

In the normal filtration of the metal filter paper with the present invention the slope drainage device as described above, the flat bottom (3) and the flat bottom (5) of the water purification (4) of the raw water inlet (2) is opened and the drain passage (7) The raw water flowing into the raw water collecting unit 2 in a state in which the drainage side 12 of one end is closed flows into the ground along the distribution pipe 11 over the weir with the flat bottom side 3 open. The raw water introduced in this way is filtered while passing through the filtration layer (8), and the filtered purified water is introduced into the collection chamber (10) through the strainer (14), which is a collecting device, and then into the pressure chamber (9), and then opened. It is known that the filtration of the filter paper proceeds as it flows out to the water purification unit 4 through the flat bottom 5 for purified water outflow and access to the washdown water.

As the filtration process continues as described above, the filtration resistance of the filtration layer 8 increases, and when the water level in the filter paper 1 reaches the highest water level HWL, the filter paper 1 is washed. In accordance with the present invention, the operation of the slope drainage system according to the washing of the filter paper and the effects thereof are as follows.

First, when the water level of the filter paper 1 reaches the highest water level (HWL), the open water inflow flat bottom (3) and the water purification (4) side purified water outflow and backwash water import flat bottom (5) are closed simultaneously. The washing water drainage door 16 is opened to drain the raw water in the basement.

At this time, since the water level in the basement is higher than the position of the upper part of the upper part of the siphon tube 20 according to the present invention, the upper part 47 is moved upward by its own buoyancy, and the valve disk connected to the valve rod 46 therewith. Since the 44 is moved in the same direction and the exhaust valve 40 is in an open state, the siphon tube 20 and the siphon breaker 30 are filled with raw water in the base.

In this state, when the water level in the ground gradually descends to reach the float 47 position, the float 47 falls along the water level, and thus the valve disk 44 connected to the valve rod 46 descends together. The O-ring 42 of the valve seat 43 is contacted to close the exhaust valve 40. When the water level in the area reaches the upper end of the first-class wear (6), overflow of the first-class wear (6) and the outflow of raw water drained to the drainage passage (7) is stopped, the first-class wear (6) and filter layer ( The raw water located between the slopes 8a of 8) is sucked into the pipe through the absorption port 21 of the siphon 20 pipe of the present invention and flows out into the drain passage 7 through the drain port 22 on the opposite side.

In this way, when the water level in the ground drops further and the water level on the slope 8a reaches the intake hole 31 of the siphon breaker 30, the air in the atmosphere passes through the siphon breaker 30 and the siphon tube 20. Since the siphon phenomenon is released while being introduced into the inside, the outflow of raw water through the siphon tube 20 is stopped.

At this time, as the lowest water level on the slope (LWL) according to the present invention, such a surface water level is determined according to the positions of the intake hole 31 of the absorption port 21 and the siphon breaker 30 of the siphon tube 20, and the general In the case of rapid filtration paper, a slope of about 50 mm is suitable.

In the above state, the air or the washing water and the washing by the air is performed, but the supply of the washing water is performed for a predetermined time until the rising water level reaches the first-class wear (6). And will prevent spills.

When the rinsing of the filter paper is completed as described above, the backwash water drainage side 12 is closed, and the flat bottom side 3 of the raw water collection unit 2 and the flat bottom side 5 of the water purification unit 4 are obtained. Normal filtration is resumed by supplying. In this case, as described above, the float 47 is moved downward, and the lower valve disc 44 is brought into close contact with the O-ring 42 of the valve seat 43 so that the valve is closed. Is in. Therefore, when the supply of raw water is started in such a state and the water level on the slope 8a is increased, the absorption port 21 of the siphon tube 20 and the intake hole 31 of the siphon breaker 30 are submerged in water. The air inside the siphon tube 20 does not escape to the outside, so in this state, no siphon is formed during the next wash. However, the government of the siphon tube 20 according to the present invention is provided with an exhaust valve 40 that is automatically operated by the floats 47, such a problem does not occur.

That is, when the filtration resistance is increased as the normal filtration in the area continues and the water level in the area gradually rises to reach the position of the lowered ball 47, the ball 46 is raised along the water level and the valve rod 46 Since the valve disks 44 connected to each other are opened, air filled in the siphon tube 20 is discharged to the outside through the air discharge passage 48 of the cover 45, and at the same time, raw water is stored in the siphon tube 20. By being filled, the slope drainage can be repeatedly resumed at the next wash.

As described above, the present invention has a siphon tube having its absorbent port located near the slope of the filter layer on one side of the first-class wear of the rapid filter paper which is washed with air and water, and the first-class water drainage for washing. Since the lowest water level in the basement stayed at the top height of the ware can be lowered to the position adjacent to the slope, the filter medium according to the repeated washing process is prevented by the spillage of the filter medium even during the strong washing using air and water. The loss of oil and subsequent refilling of the filter media can be completely excluded.When the washing is completed and the supply of raw water is resumed, the siphon is released and reopened every time the washing is resumed by automatically venting the air in the siphon pipe by opening the exhaust valve. By forming automatically, it is possible to increase the efficiency of filtration and washing of the rapid filter paper. And it has the effect that the maintenance can be more easily and easily implemented.

Claims (1)

A flat bottom side 3 for raw water inflow is installed on the upper side of the raw water collector 2 disposed on one side of the filter paper 1, and a flat bottom side for water purification and backwash inflow is installed on the water purification side 4 disposed on the opposite side. And a collecting chamber 10 communicating with the pressure chamber 9 at the lower part of the filtration layer 8 of the unit filter paper 1a disposed with the drain passage 7 partitioned by first-class wear 6 interposed therebetween. In the formed rapid filter paper, the absorbing port 21 disposed close to the upper surface of the slope 8a of the filtration layer 8 and the drain holes 22 located on the drain passage 7 side are provided at both ends of the inverted U-shaped tube. And installed on one side of the first-class wear (6) of the unit filter paper (1a) and the raw water located between the upper end of the first-class wear (6) and the filtration layer (8) in the initial stage of the water drainage when the washing start Buoy 47 above the siphon tube 20 for draining to a position proximate to the upper surface of the slope 8a, and a vertical exhaust pipe 41 connected to the government of the siphon tube 20. An exhaust valve 40 having a valve disc 44 operated according to elevating and allowing the air inside the siphon tube 20 to be discharged according to the increase or decrease of the water level in the ground, and one end of the exhaust pipe 40 of the exhaust valve 40; 41, the intake hole 31 connected to one side and formed at the lower end thereof is disposed at approximately the same position as the absorption port 21 of the siphon tube 20, and when the water level in the ground reaches the minimum level, Slope drainage device of the rapid filter, characterized in that the siphon breaker 30 to release the siphon phenomenon.