JPH0290982A - Water pumping device for soil water treatment - Google Patents

Abstract

PURPOSE:To determine a treating volume by providing sounding sensors and a water pumping pipe with a plurality of air exhaust outlets corresponding with the water depth and exhausting the air out of the air exhaust outlets according to a signal from the sensor. CONSTITUTION:A plurality of sounding sensors 3 are provided in the upper and lower sections of a first tank 1 and when a max. sounding sensor 3a, air is exhausted out of an air exhaust outlet 4a disposed on a lower end opening section 6 of a water pumping pipe 5 forming the lowest level of pumping out of a plurality of air exhaust outlets according to a signal of the sensor 3a. Air is not exhaust out of other air exhaust outlets 4b, 4c.... Air is exhausted out of the air exhaust outlets 4 according to the depth of water pumped up by the water pumping pipe 5 to determine soil water volume.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a water pumping device for sewage treatment, and more specifically, to a sewage treatment device that pumps a constant amount of sewage regardless of fluctuations in the sewage flowing into the first tank. This technology relates to a technology that equalizes the amount of processing by transporting the data.

[Prior Art 1] Conventionally, a water pumping device using air I)7F has been known as a means for transferring sewage from a first tank into which sewage flows into a second tank.

[Problems to be Solved by the Invention] The above-mentioned air lift water pumping device can be installed without the need for a driving pump, and is highly safe against clogging, so it has a long life and is easy to clean even if it becomes clogged. It has various characteristics such as being simple and inexpensive, but on the other hand, the amount of water pumped fluctuates due to changes in water depth, and in particular, when the water depth becomes shallow, the amount of water pumped increases suddenly.
The accuracy of transferring a fixed amount to the second tank was poor, and therefore the throughput could not be leveled.

The present invention was invented in view of the above-mentioned problems of the conventional method, and its purpose is to solve the problems of the above-mentioned air lift pumping method while taking advantage of the advantages of the air lift pumping method. An object of the present invention is to provide a water pumping device for sewage treatment that can ensure quantitative pumping amount even when water depth varies.

[Means for Solving the Problems 1] A water pumping device for sewage treatment of the present invention is a pumping device for transferring wastewater from a first tank 1 to a second tank 2, which includes a sensor 3 for detecting the water depth of the first tank 1 and a water depth sensor 3 for detecting the water depth of the first tank 1. and a pumping pipe 5 in which a plurality of air discharge ports 4 corresponding to the water depth are formed, and air is discharged from a predetermined air discharge port 4 in response to a detection signal from a sensor 3 that detects water depth. By employing such a configuration, the above-mentioned object of the present invention is achieved.

[Effect 1: In other words, the sensor 3 detects the water depth of the first tank 1,
When the water depth of the first tank 1 is deep, air is discharged from the air outlet 4 which is set so that the height of water pumped in the pumping pipe 5 is shortened, and the water is pumped up by the pumping pipe 5, and the water depth of the first tank 1 is increased. When the water is shallow, air is discharged from an air discharge port 4 set so that the pumping height becomes long, and the water is pumped up by a pumping pipe 5.

[Examples] The present invention will be described in detail below based on examples shown in the accompanying drawings.

An example of the present invention is shown in the f:tS1 diagram and the $2 diagram. Sewage flows into the first tank 1 from the outside, and the amount of this sewage flows in an unspecified amount at an unspecified time. In addition, in FIG. 1, the inflow port from the outside to the first tank 1 is not shown. 1st W1
1 is provided with a plurality of sensors 3 above and below to detect the water depth of the first tank 1. This sensor 3 is, for example, a pressure sensor, but it goes without saying that it may be another sensor. 1st W! 1, there are provided a plurality of lifting pipes 5 of different lengths, and in the embodiment shown in FIG. It is something that exists. An air discharge port 4 at the tip of the air supply pipe 7 is provided in the lower end opening 6 of each pumping pipe 5. Here, a plurality of sensors 3 a, 3 b, 3 c, etc. are provided above and below.
- When the deepest depth is detected by the sensor 3a that detects the deepest depth, a plurality of air discharge ports 4a are activated by the detection signal of the sensor 3a.

Air is discharged from the air discharge port 4a provided at the lower end opening 6 of the pumping pipe 5, which has reached the lowest pumping height among the pumping heights 4b, 4c,...
, 4C, . . . no air is discharged from them. Further, the sensor 3b corresponds to the air outlet 4b, and when the sensor 3b detects the water depth, the air is switched to be discharged from the air outlet 4b, and the air is not discharged from the other air outlets 4a, 4c, etc. Air is not discharged. Further, the sensor 3c corresponds to the air outlet 4c, and when the sensor 3c detects the water depth, the air is switched to be discharged from the air outlet 4c.
Air is not discharged from the other air discharge ports 4a and 4b. In this way, the water depth of the first tank 1 is detected by the sensor 3, and air is set to come out from a predetermined air outlet 4 based on this detection signal.

In other words, the 1st W! 1, when the water depth is deep, air is discharged from the air outlet 4 that is set so that the pumping height in the pumping pipe 5 is short (that is, the air outlet 4 located at the lower end opening 6 of the short pumping pipe 5). When the water is discharged and pumped up by the pumping pipe 5, and the water depth of the first tank 1 is shallow,
The air discharge port 4 is set so that the pumping height becomes longer.
(In other words, air is discharged from the air outlet 4 located at the lower end opening 6 of the water pumping pipe 5) and the water is pumped up by the pumping pipe 5. By doing this, the water can be pumped up even when the water is deep or shallow. A fixed amount of wastewater can be pumped up using an air lift and transferred to the second tank 2 side. Here, the reason why the amount of pumped water can be quantified by selecting the air outlet 4 so as to change the pumping distance according to the water depth is as follows.

In other words, the theoretical formula for an air lift pump is as follows (see Isode Kai Engineering Handbook).

Qa/ Q” (lI+hn)/flOZoge[(
IIs+ 10)/10]1 where, H; lifting head, Q;
Pumped water amount %Qa: air volume, l+R: total loss peak (J? friction loss of pumping pipe, discharge speed loss, slip loss between air bubbles and water, etc.), Hs: submerged m3.

From the above equation, it is found that as Hs becomes deeper, the eclipsed denominator becomes larger, and if Qa is held constant, Q increases. Therefore, if the air discharge port 4 is constant, the amount of water pumped will increase as the water depth increases under the condition that the amount of air is constant. The present invention focuses on this point, and in order to quantify the water pumped, when the water depth is deep, the upper air outlet 4 (
In other words, by using the air outlet 4) with the shorter lift height, and when the water depth is shallow, by using the lower air outlet 4 (i.e. the air outlet 4 with the longer lift), the water depth can be changed. It is also possible to quantify the amount of water pumped. In the attached drawing, the maximum water level of tank 1 is U], L, i is the low water level, and l is
11. Indicated by L.

Next, other embodiments shown in FIGS. 3 and 4 will be described.

In this embodiment, a plurality of air discharge ports 411+4bt4c... are connected to one pumping pipe 5, and the plurality of air discharge ports 4a, 4b, 4c.
The connection positions of ... are vertically shifted as shown in FIG.

In Fig. 3, a plurality of sensors 3a and 3b are installed above and below to detect different water depths.
, 3c..., the sensor 3a is the air outlet 4a
, the sensor 3b corresponds to the air discharge port 4b,
The sensor 3c corresponds to the air outlet 3c, and when the deepest depth is detected by the sensor 3a that detects the deepest depth, a detection signal from the sensor 3a causes the air outlet 4a at the top to be connected to the air outlet 4a.
Air is discharged through the other air discharge ports 4 b, 4
c... Air is not discharged from the shell. Further, when the water depth is detected by the sensor 3b, the air is switched to be discharged from the air discharge port 4b, and air is not discharged from the other air discharge ports 4a, 4C, . . . .

Further, when the water depth is detected by the sensor 3c, the air discharge port 4c is switched to discharge air, and the other air discharge ports 4a and 4b are configured not to discharge air.

In the embodiment shown in FIG. 1, one air outlet 4 is provided in each of a plurality of pumping pipes 5 having different vertical lengths. An embodiment has been described in which a plurality of air discharge ports 4 are provided vertically shifted in the pipe 5, but by combining the embodiment shown in FIG. 1 and the embodiment shown in FIG. A plurality of air discharge ports 4 may be disposed in each pumping pipe 5 in a vertically shifted manner. In this case, a plurality of sensors 3 are also provided so as to be shifted in the vertical direction corresponding to the positions of the respective air discharge ports 4. In this way, water can be pumped with high precision in response to slight changes in water depth.

FIGS. 5 and 6 show still another embodiment of the present invention.

In this embodiment, there are a plurality of pumping pipes 5 having different vertical lengths.
The lower end portions are at the same level, the upper end portions are at different levels, and air discharge ports 4a, 4b, and 4c are provided at the lower end opening 6 of each pumping pipe 5, respectively. and,
Sensors 3a, 31J, 3c, etc., which are provided above and below to detect different water depths, are sensor 3.
a corresponds to the air outlet 4a, the sensor 3b corresponds to the air outlet 41], and the sensor 3c corresponds to the air outlet 3.
It corresponds to c.

That is, in the theoretical formula of the air lift pump mentioned above, Hs
is a certain factor, and the pumped IQ becomes smaller as H becomes higher. Utilizing this property, when Is is small (that is, when the depth is detected by the sensor 3c), air is discharged from the air outlet 4c arranged at the lower end opening 6 of the short pumping pipe 5 to pump water. , Hs increases, the air discharge port 4b at the depth detected by the sensor 3b
An air lift pump with quantitative properties can be obtained by discharging air from the air discharge port 4a to pump water, and when the depth is detected by the sensor 3a, discharging air from the air discharge port 4a to pump water.

By the way, the amount of water pumped by Air IJ7 is generally @
Since it is difficult to ensure quantity quantitative performance, in that case, provision of an overflow device 10 as shown in Figs. 7 and 8 will ensure trace quantity quantitative performance (for example, 91% of water pumped per 101 minutes). This makes it possible to restore IN/minute and transfer only IN/minute. Figure 7, v
In Figure J8, the partition 1 between the first tank 1 and the second canopy 2
A container-shaped sewage receptacle for the over 70- is provided with a part 12 at the upper end of the 1, and this sewage receptacle for the over 70-
A return notch 15 is provided in the side wall 13 located above the tank 1, and the sewage receiver for the over 70-
Notch 1 for advection in side wall 16 located above tank 2
7 is provided. The lower edge of the return notch 15 is located below the lower P& part of the advection notch 17. Therefore, the sewage from @1 tank 1 pumped up by the air lift pump flows from the outlet 18 at the upper end of the pumping pipe 5 into the over 70-use sewage receiver section 12, and a part of it flows into the advection cutout section 17. However, most of the water is returned to the first tank 1 through the return notch 17.

In addition, in the present invention, if the air amount itself is controlled on the air pump side, the quantitative nature of the pumped water amount can be further improved.

[Effect of the invention 1] In the present invention, in a water pumping device for transferring wastewater from a first tank to a second tank, a plurality of sensors for detecting the water depth of the first tank and a plurality of air discharge ports corresponding to the water depth are formed. It is equipped with a pumping pipe, and air is released from a designated air outlet in response to a detection signal from a sensor that detects water depth.
As mentioned above, the air lift pump has the characteristics of long life, the ability to install the air pump drive part away from the tank, resistance to clogging, easy maintenance and cleaning, and low cost. Even if there are variations in water depth, the amount of water pumped by the air lift pump can be maintained quantitatively.

[Brief explanation of drawings]

Fig. 1j is a front sectional view of one embodiment of the present invention, Fig. 2 is a side sectional view of the same as above, Fig. 3 is a front sectional view of another embodiment of the invention, and Fig. 4 is a side sectional view of the same as above. , FIG. 5 is a front sectional view of still another embodiment of the present invention, FIG. 6 is a side sectional view of the same as above, FIG. 7 is a front sectional view of still another embodiment of the present invention, and FIG.
The figure is a side sectional view of the same as above, and 1 is an fpJ1 tank, 2 is an f52 tank, 3 is a sensor, 4 is an air outlet, and 5 is a pumping pipe. 1) Ai 7 / 17 Figure 8 Procedural amendment (voluntary) December 2, 1988 Patent Application No. 241715 2, Title of invention In sewage treatment Relationship between pumping device 3 and the person making the correction πTo Patent applicant 11 Location 1048 Kadoma, Kadoma City, Osaka Prefecture Name (
583) Matsushita Electric Works Co., Ltd. Representative Toshio Miyoshi 4, Substitute i Postal code 530 Address 1-12-17 Umeda, Kita-ku, Osaka Specification No. 6
In line glO of the page, after "herein," it says "In the embodiment of the attached drawings, for example, No. 11 is a sedimentation tank,
The second tank 2 is contact aeration. By the way, I would like to insert ". Agent: Patent Attorney Ishi 1) Ai 75, date of amendment: Self-F+33-

Claims (1)

[Claims] (1) A pumping device for transferring wastewater from a first tank to a second tank, comprising a sensor that detects the water depth of the first tank and a pumping pipe in which a plurality of air discharge ports corresponding to the water depth are formed,
1. A water pumping device for wastewater treatment, characterized in that air is emitted from a predetermined air outlet in response to a detection signal from a sensor that detects water depth.