JPH0924221A - Water quality purifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water quality purifying apparatus by which when clogging of a filter occurs, it can be cleaned out. SOLUTION: A direct flow pump means 26 which generates a water flow in a filtering main part 15 from the outside to the inside by pumping out the water from the inner space part 21 of a filter 13 and a back flow pump means 32 which generates a water flow in filtering main part 15 from the inside to the outside by introducing the water into the inner space part 21 of the filter 13, are provided.

Description

Detailed Description of the Invention

[0001]

The present invention relates to, for example, lakes, marshes, ponds,
The present invention relates to a water purification device that purifies water in dams, ponds, rivers, waterways, etc.

[0002]

2. Description of the Related Art In lakes, ponds, dams, ponds, rivers, irrigation channels, etc., a water purification device for purifying water is installed as a measure against water pollution. As such a water purification apparatus, as shown in FIG. 2, a filter 51 having a real part 51a and an internal space part 51b, and a filter 5 having a lower part.
1. Air is ejected from a tubular body 52 having an opening in the inner space 51b of the first portion and an upper portion opening to the outside of the filter 51, and an ejection port 53 which is inserted into the tubular body 52 and arranged at a predetermined intermediate position of the tubular body 52. It is possible to use the one provided with the air lift pump 55 having the air jet pipe 54 for causing the air jet. That is, the air lift pump 55 generates water flow from the lower part to the upper part in the pipe body 52 by ejecting air from the ejection port 53 of the air ejection pipe 54, whereby the internal space portion of the filter 51 is formed. The water of 51b is pumped out to generate a water flow from the outside to the inside of the filter 51, and the water is forcibly passed through the real part 51a of the filter 51 to be purified.

[0003]

The water purification device described above has a problem that the filter is clogged when the purification treatment is performed for a long time. Therefore,
An object of the present invention is to provide a water purification device that can clean a filter when it is clogged.

[0004]

In order to achieve the above object, a water purification apparatus according to claim 1 of the present invention comprises a filter having a real part and an internal space part, and water from the internal space part of the filter. A forward flow pump means for generating a water flow from the outside to the inside of the real part by pumping out the water, and introducing water into the internal space of the filter to generate a water flow from the inside to the outside of the real part. And a back-flow pump means. As a result, the forward flow pump means draws water from the internal space of the filter to generate a water flow from the outside to the inside of the real part, thereby purifying the water passing through the real part. On the other hand,
When the backflow pump means introduces water into the internal space of the filter to generate a water flow from the inside to the outside, the real part is backwashed.

[0005] The water purifying apparatus according to claim 2 of the present invention comprises:
The filter according to claim 1, wherein the filter is connected to a first extending portion that opens outward from an upper portion of the filter and extends downward from the opening position and a lower portion of the first extending portion, and extends upward. And a second extending portion opening into the internal space, the forward flow pump means includes the tubular body and an intermediate predetermined position of the first extending portion of the tubular body. And a backward flow air jetting means for jetting air from a predetermined intermediate position of the second extending portion of the tubular body. It is characterized by being configured. As a result, when air is ejected from the intermediate predetermined position of the first extension portion of the tubular body by the forward air jetting means of the forward flow pump means, an upward water flow is generated in the first extension portion, and thus the filter is used in the tubular body. Water is pumped out from the internal space of the above, water flows from the outside to the inside of the real part, and the real part purifies the water. On the other hand, when air is ejected from the intermediate predetermined position of the second extension portion of the tubular body by the backflow air ejection means of the backflow pump means, an upward water flow is generated in the second extension portion, so that the tubular body is externally exposed. Water is introduced into the internal space of the filter, and a water flow from the inside to the outside occurs in the real part, so that the real part is backwashed.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. First, what is indicated by reference numeral 11 in the figure is a water purification device. This water purification device 11
It is used by floating in a pond or lake that is the purification target, and float 12 for floating in water and float 1
2 has a filter cartridge (filter) 13 connected and fixed to the lower side of the float 2, and a control box 14 fixed to the upper side of the float 12.

The filter cartridge 13 has a double-cylindrical outer cylindrical portion 13a and an inner cylindrical portion 13b having a plurality of holes formed on the entire surface, and upper and lower end surfaces of the outer cylindrical portion 13a and the inner cylindrical portion 13b. Disc-shaped closing members 13c and 13d fixed to the outer cylindrical portion 13a and inner cylindrical portion 13b, and a filter material (real portion) 15 such as charcoal filled in the gap between the closing members 13c and 13d. ing. The filter medium 15 carries aerobic microorganisms that decompose organic substances. In addition, the upper closing member 13c,
A hole 17 and a hole 18 having a smaller diameter than that are formed,
A tube body 19 is fitted in the hole 17.

The tubular body 19 includes a first tubular portion (first extending portion) 22 extending vertically downward from the closing member 13c to a predetermined position on the lower side of the internal space 21 of the filter cartridge 13.
A second pipe part 23 extending laterally from the first pipe part 22 and a third pipe part (second extending part) extending vertically upward from the second pipe part 23 to a position in front of the closing member 13c. ) 24. The filter cartridge 13
The gap between the float 12 and the float 12 is open to the outside of the water purification device 11.

A forward-flow air jet pipe (forward-flow air jetting means) 26 is provided in the first pipe portion 22 of the pipe body 19 up to an intermediate predetermined position slightly above the second pipe portion 23 in the first pipe portion 22. It is inserted and supported so as to extend. The forward-flow air jet pipe 26 is connected to a compressor 29 provided in the control box 14 via a switching valve 30.

A backflow air jet pipe (backflow air jetting means) 32 is provided in the third pipe portion 24 of the tubular body 19 up to an intermediate predetermined position slightly above the second pipe portion 23 in the third pipe portion 24. It is inserted and supported so as to extend. The backflow air jet pipe 32 is closely fitted to the hole 18 of the closing member 13c and guided to the control box 14.
It is connected to a compressor 29 provided in the control box 14 via a switching valve 30.

The switching valve 30 receives a command from the control device 34 so that the compressor 29 communicates only with the forward-flow air jet pipe 26 and the compressor 29 with the backward-flow air jet pipe 3
It is selectively switched to a state in which only the two are communicated. Here, when the switching valve 30 causes the compressor 29 to communicate with the forward flow air jet pipe 26 by the control device 34, the forward flow air jet pipe 26 causes the air to flow from the lower end jet port 26 a into the first pipe portion 22 of the pipe body 19. A bubble is jetted to a predetermined intermediate position. Then, with the movement of the bubbles from the lower side to the upper side in the first pipe portion 22, an upward water flow is generated in the first pipe portion 22, and accordingly, from the internal opening portion 19a of the pipe body 19 on the internal space portion 21 side. Water in the internal space 21, that is, water that has already passed through the filter material 15 is pumped up and discharged to the outside through the external opening 19b.
As a result, the water on the outer side of the filter cartridge 13 is forced to pass through the filter medium 15 inward in the radial direction and reaches the internal space 21 for purification.

On the other hand, the control device 34 causes the switching valve 30 to
When the compressor 29 is communicated with the backflow air ejection pipe 32, the backflow air ejection pipe 32 ejects air from the lower end ejection port 32a to a predetermined intermediate position in the third pipe portion 24 of the pipe body 19 in a bubble shape. Then, with the movement of the bubbles from the lower side to the upper side in the third pipe portion 24, an upward water flow is generated in the third pipe portion 24, and the filter cartridge 1 is discharged from the external opening 19b of the pipe body 19.
Water outside 3 is introduced directly into the internal space 21 without passing through the filter medium 15 through the internal opening 19a. As a result, the water in the internal space portion 21 is forced to pass through the filter medium 15 outward in the radial direction to reach the outside of the filter cartridge 13, and the filter medium 15 is backwashed. In addition, since the water introduced from the pipe body 19 into the internal space 21 due to the air jetted from the backflow air jet pipe 32 is rich in air, during the above-mentioned backwash, the inside of the filter medium 15 is Air can also be supplied to microorganisms.

The switching control of the switching valve 30 of the control device 34 is performed in accordance with, for example, an input operation by the operator. Here, the control device 34, the switching valve 30,
Compressor 29, pipe body 19 and forward flow air jet pipe 26
The forward flow pump means is configured by, and the control device 34, the switching valve 30, the compressor 29, the pipe body 19, and the reverse flow air ejection pipe 32 constitute the reverse flow pump means.

According to the water purification device 11 described above,
Since the backflow pump means can generate a water flow from the inside to the outside in the filter medium 15, when the filter medium 15 is clogged, it can be washed. Moreover, since the forward flow pump means and the reverse flow pump means share one compressor 29 and one pipe body 19, the cost can be reduced.

Further, in the above description, the case where the air is ejected from the forward flow air ejection pipe 26 at the time of water purification and the air is ejected from the back flow air ejection pipe 32 at the time of backwashing has been described as an example. It is also possible to switch these depending on the situation.

That is, when air is jetted from the forward flow air jet pipe 26, the water on the side of the filter cartridge 13 passes through the filter cartridge 13 and the reverse flow air jet pipe 3
When air is ejected from 2, the filter cartridge 13
Of water above passes through the filter cartridge 13, and the filter cartridge 13 can purify the passing water in any of these directions. If it is switched to the case where there are many cases, the purification can be performed efficiently. For example, since blue water has a tendency to float on the surface layer during the day, air is ejected from the backflow air ejection pipe 32 during the daytime, and air is ejected from the forward air ejection pipe 26 during the nighttime.

[0017]

As described in detail above, claim 1 of the present invention
According to the water purification device described, by the backflow pump means,
When water is introduced into the internal space of the filter to generate a water flow from the inside to the outside of the real part, the real part is backwashed. Therefore, when the filter is clogged, it can be cleaned.

According to the water purification apparatus of the second aspect of the present invention, when the backflow air jetting means of the backflow pump means jets air from a predetermined intermediate position of the second extending portion of the pipe body,
An upward water flow is generated in the second extending portion, so that water is introduced into the internal space of the filter from the outside by the pipe body, and a water flow from the inner side to the outer side is generated in the real portion to cause the water flow in the real portion. Backwash is performed. Therefore, when the filter is clogged, it can be cleaned. Moreover, since one pipe can be shared by the forward flow pump means and the reverse flow pump means, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a water purification device of the present invention.

FIG. 2 is a side sectional view of an example of a water purification device.

[Explanation of symbols]

13 Filter Cartridge (Filter) 15 Filtration Material (Actual Part) 19 Tubular Body (Forward Flow Pump Means, Backflow Pump Means) 21 Internal Empty Pipe Part 22 First Pipe Part (First Extension Part) 24 Third Pipe Part (Second) Extension part) 26 Forward-flow air jet pipe (forward-flow air jet means, forward-flow pump means) 29 Compressor (forward-flow pump means, backward-flow pump means) 30 Switching valve (forward-flow pump means, backward-flow pump means) 32 Back-flow air jet tube (back-flow air) Jetting means, backflow pump means) 34 Control device (forward flow pump means, backflow pump means)

Claims (2)

[Claims] 1. A filter having a real part and an internal space, and a forward flow pump means for generating a water flow from the outside to the inside of the real part by pumping water from the internal space of the filter, A back-flow pump means for generating a water flow from the inside to the outside in the real part by introducing water into the internal space part of the filter, the water purification device. 2. A first extending portion that opens outward from an upper portion of the filter and extends downward from the opening position, and is connected to a lower portion of the first extending portion and extends upward to extend the interior. While having a bent-shaped tube body having a second extending portion that opens into the space portion, the forward flow pump means supplies air from the tube body and a predetermined intermediate position of the first extending portion of the tube body. The counterflow pump means is composed of the tubular body and the counterflow air ejection means for ejecting air from a predetermined intermediate position of the second extending portion of the tubular body. The water purification device according to claim 1, wherein the water purification device is provided.