JPH07241582A - Fixed volume pump device for combination treatment purifying tank - Google Patents

Abstract

PURPOSE:To provide a fixed volume pump device reduced in the change of a water-sending amt. caused by the fluctuations of the water level in an underwater pump arranged tank when waste water is sent to a treatment tank from the underwater pump arranged tank in a combination treatment purifying tank and enabling highly efficient purifying treatment. CONSTITUTION:A fixed volume pump device is equipped with a mechanism converting the rising and falling motion of a float 6a rising and falling with the fluctuations of the water level in an underwater pump arranged tank to rotary motion, a variable resistor 6c of which the operation shaft 6b is revolved by the mechanism 6, a control circuit 4 receiving the electric signal of the resistor to output an electric signal changing the number of rotations of a pump motor 3 and the pump motor 3 receiving the electric signal to be driven and the number of rotations of the pump motor 3 is reduced when the water level in the underwater pump arranged tank is high and increased when the water level is low.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の技術分野】本発明は、合併処理浄化槽用定量性
ポンプ装置に関するものである。TECHNICAL FIELD OF THE INVENTION The present invention relates to a quantitative pump device for a combined treatment septic tank.

【０００２】[0002]

【従来技術とその問題点】周知のように、合併処理浄化
槽において高効率な浄化処理を実現するためには、処理
槽へ常に定量的に廃水を送り、処理槽の負荷を一定に保
たせることが不可欠な要件とされている。2. Description of the Related Art As is well known, in order to realize highly efficient purification treatment in a combined treatment septic tank, it is necessary to constantly send wastewater quantitatively to the treatment tank to keep the load of the treatment tank constant. Is an essential requirement.

【０００３】合併処理浄化槽では処理槽の前段に、家庭
から排出された廃水を一旦貯留する流量調整槽と呼ばれ
る槽を設け、この流量調整槽から水中ポンプ等で処理槽
へ送水しているが、上記流量調整槽は家庭からの排水量
の変動により水位が常に変動し、その水位変動により図
７に示すようポンプの送水量も大幅に変動するため、処
理槽へ定量的に排水を送ることができなくなる。In the combined treatment septic tank, a tank called a flow rate adjusting tank for temporarily storing the waste water discharged from the home is provided in front of the treatment tank, and water is sent from this flow rate adjusting tank to the treatment tank by an underwater pump or the like. In the above flow rate adjustment tank, the water level constantly fluctuates due to fluctuations in the amount of wastewater discharged from homes, and the fluctuations in the water level also drastically change the amount of water sent by the pump as shown in Fig. 7. Therefore, it is possible to quantitatively send wastewater to the treatment tank. Disappear.

【０００４】送水量増大時における処理槽の負荷増を減
殺するための方策として図２に示すよう、流量調整槽２
ａと処理槽１との間に計量槽と呼ばれる槽２ｂを設置し
て、過大な水量は流量調整槽２ａへ返送するようなこと
も従来から行われているが、しかしそれでもポンプの水
量変動には対応しきれないのが現状であり、また、計量
槽２ｂ等の設置による設備コストの増大も避けられな
い。As shown in FIG. 2, the flow rate adjusting tank 2 is used as a measure for reducing the increase in the load on the processing tank when the amount of water supply is increased.
It has been conventionally performed to install a tank 2b called a measuring tank between a and the processing tank 1 and return an excessive amount of water to the flow rate adjusting tank 2a. The current situation is that it is not possible to cope with the situation, and an increase in equipment cost due to the installation of the measuring tank 2b and the like cannot be avoided.

【０００５】[0005]

【発明の目的】本発明の目的は、合併処理浄化槽におい
て水中ポンプ設置槽から処理槽へ廃水を送水するにつ
き、水中ポンプ設置槽内の水位変動による送水量の変化
が少なくて高効率な浄化処理の行われる定量性ポンプ装
置を提供することにある。It is an object of the present invention to highly efficiently purify wastewater by transferring wastewater from a submersible pump installation tank to a treatment tank in a combined treatment septic tank, because the amount of water sent is small due to fluctuations in the water level in the submersible pump installation tank. Another object of the present invention is to provide a quantitative pumping device.

【０００６】[0006]

【発明の構成】本発明に係る合併処理浄化槽用定量ポン
プ装置においては、ポンプ設置槽内の水位変動に伴い昇
降するフロートの昇降運動を回転運動に変換する機構
と、上記機構により操作軸を回動操作される可変抵抗器
と、上記可変抵抗器からの電気信号を受けて後記ポンプ
モータの回転数を変化させる電気信号を出力する制御回
路と、上記制御回路からの電気信号を受けて駆動される
ポンプモータを備え、水中ポンプ設置槽内が高水位時に
はポンプモータの回転数を減少させ、低水位時にはポン
プモータの回転数を増大させるよう構成した。According to the present invention, there is provided a combined treatment septic tank constant-quantity pump device, wherein a mechanism for converting a lifting movement of a float, which moves up and down according to a change in water level in a pump setting tank, into a rotary movement, and an operating shaft rotated by the mechanism. A variable resistor that is operated dynamically, a control circuit that receives an electrical signal from the variable resistor and outputs an electrical signal that changes the rotational speed of a pump motor, which will be described later, and is driven by receiving an electrical signal from the control circuit. The submersible pump installation tank is configured to reduce the rotation speed of the pump motor when the water level is high and increase the rotation speed of the pump motor when the water level is low.

【０００７】[0007]

【実施例】以下実施例の図面により説明をする。Embodiments will be described below with reference to the drawings of the embodiments.

【０００８】図１において、１は排水の浄化処理を行う
処理槽、２は流入調整槽等と呼ばれる水中ポンプ設置槽
であって、家庭から排出された生活廃水を一旦貯留する
ため処理槽１の前段に設けられる。３は後述する制御回
路４からの電気信号を受けて水中ポンプ設置槽２内の水
位変動に対応する回転数で駆動されるポンプモータ、５
は水中ポンプ設置槽２内へ沈設せられポンプモータ３に
よって駆動される水中ポンプであって、その吸込口５ａ
は水中ポンプ設置槽２内の水底面近くに開口せられ、吐
出口５ｂは上延されて処理槽１内の上方部へ開口されて
いる。図３において、６は水中ポンプ設置槽２の水位変
動に伴い昇降するフロート６ａの昇降運動を回転運動に
変換する機構、６ｃは上記機構６により操作軸６ｂを回
動操作させる可変抵抗器であり、水中ポンプ設置槽２内
の水位変動に伴いフロート６ａが昇降して操作軸６ｂと
回動操作することにより抵抗値の調整された可変抵抗器
６ｃからの電気信号が後記制御回路４へ送られることに
なる。制御回路４はポンプ内部または外部に設けられ、
上記可変抵抗器６ｃからの電気信号を受け、水中ポンプ
設置槽２内が高水位時にはポンプモータ３の回転数を減
少させ、低水位時にはポンプモータ３の回転数を増大さ
せる電気信号としてポンプ駆動部へ送るのである。図４
および図５は可変抵抗器６ｃからの水位信号出力例を示
しており、水位と電圧との関連では図４のようになり、
水位と電流との関連では図５のようになる。なお、ポン
プモータ３の回転数を制御するための手段としてはイン
バータ、直流ブラシレスモータ、位相制御モータなど様
々な方式を採ることができる。In FIG. 1, 1 is a treatment tank for purifying waste water, and 2 is a submersible pump installation tank called an inflow adjusting tank or the like, which is a storage tank for temporarily storing domestic waste water discharged from a home. It is installed in the front stage. Reference numeral 3 denotes a pump motor which receives an electric signal from a control circuit 4 which will be described later and is driven at a rotation speed corresponding to a water level fluctuation in the submersible pump installation tank 5.
Is a submersible pump which is submerged in the submersible pump installation tank 2 and driven by a pump motor 3, and has a suction port 5a.
Is opened near the bottom of the water in the submersible pump installation tank 2, and the discharge port 5b is extended upward and opened to the upper part in the processing tank 1. In FIG. 3, 6 is a mechanism for converting the up-and-down motion of the float 6a that moves up and down according to the water level fluctuation of the submersible pump installation tank 2 into a rotary motion, and 6c is a variable resistor for rotating the operation shaft 6b by the mechanism 6. The electric signal from the variable resistor 6c whose resistance value has been adjusted is sent to the control circuit 4 described later by the float 6a moving up and down with the fluctuation of the water level in the submersible pump installation tank 2 and rotating the operation shaft 6b. It will be. The control circuit 4 is provided inside or outside the pump,
The pump drive unit receives an electric signal from the variable resistor 6c and decreases the rotation speed of the pump motor 3 when the submersible pump installation tank 2 has a high water level and increases the rotation speed of the pump motor 3 when the water level is low. Send it to. Figure 4
FIG. 5 shows an example of the water level signal output from the variable resistor 6c, and the relationship between the water level and the voltage is as shown in FIG.
The relationship between the water level and the current is as shown in FIG. As a means for controlling the rotation speed of the pump motor 3, various methods such as an inverter, a DC brushless motor and a phase control motor can be adopted.

【０００９】排水量が多くて水中ポンプ設置槽２内が高
水位となったとき、可変抵抗器６ｃからの電気信号が制
御回路４へ送られ、その水位でのポンプ揚程に対応する
ようポンプモータ３の回転数を減少させる電気信号がポ
ンプ駆動装置部へ送られて水中ポンプ５は低速回転とな
り、また、排水量が少なくて水中ポンプ設置槽２内が低
水位となったとき、ポンプモータ３の回転数を増大させ
る電気信号がポンプ駆動装置部へ送られて水中ポンプ５
は高速回転となる。図６はこの関係を線図で示したもの
である。このように水中ポンプ設置槽２内の水位変動に
伴うポンプ揚程の変動と対応してポンプモータ３の回転
数が段階的に規制されるので、ポンプの送水量が大きく
増減することはなく処理槽１へほぼ定量的に廃水を送る
ことができ、処理槽１の負荷が一定に保たれることにな
るのである。図８は本発明装置における作動の流れを示
すフローチャートである。なお、本発明装置は小規模合
併処理浄化槽における嫌気濾床槽の第１室から第２室へ
定量送水する場合に適用しても有効である。When the submersible pump installation tank 2 has a high water level due to a large amount of drainage, an electric signal from the variable resistor 6c is sent to the control circuit 4 so that the pump motor 3 responds to the pump head at that water level. When the submersible pump 5 is rotated at a low speed by sending an electric signal to reduce the number of revolutions of the submersible pump 5 to the pump drive unit, and when the submersible pump installation tank 2 has a low water level, the rotation of the pump motor 3 is reduced. An electric signal that increases the number is sent to the pump drive unit, and the submersible pump 5
Will rotate at high speed. FIG. 6 is a diagram showing this relationship. In this way, the rotation speed of the pump motor 3 is regulated stepwise in response to the fluctuation of the pump head accompanying the fluctuation of the water level in the submersible pump installation tank 2, so that the water supply amount of the pump does not greatly change and the treatment tank The wastewater can be sent to the tank 1 almost quantitatively, and the load on the processing tank 1 can be kept constant. FIG. 8 is a flow chart showing the flow of operation in the device of the present invention. The device of the present invention is also effective when applied to the case where a fixed amount of water is supplied from the first chamber to the second chamber of the anaerobic filter bed tank in the small-scale combined treatment septic tank.

【００１０】[0010]

【発明の効果】本発明合併処理浄化槽用定量性ポンプ装
置によれば、水中ポンプ設置槽内の水位変動による送水
量の変化が少なくなり、処理槽の負荷を一定に保つこと
ができて高効率な浄化作用が行われ得るという効果があ
る。また、計量槽等の設置の必要がなくなるため設備コ
ストの低減にも資することになる。EFFECTS OF THE INVENTION According to the quantitative pump device for a combined treatment septic tank of the present invention, the change in the amount of water sent due to the fluctuation of the water level in the tank in which the submersible pump is installed can be reduced, and the load of the processing tank can be kept constant, resulting in high efficiency. There is an effect that various purifying actions can be performed. Further, since it is not necessary to install a measuring tank or the like, it contributes to a reduction in equipment cost.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明定量性ポンプ装置を用いた合併処理浄化
槽の構成図である。FIG. 1 is a configuration diagram of a combined treatment septic tank using the quantitative pump device of the present invention.

【図２】従来の合併処理浄化槽の構成図である。FIG. 2 is a configuration diagram of a conventional combined treatment septic tank.

【図３】本発明定量性ポンプ装置の要部縦断側面図であ
る。FIG. 3 is a vertical sectional side view of a main part of the quantitative pump device of the present invention.

【図４】本発明定量性ポンプ装置における可変抵抗器か
らの水位信号出力例を示した線図であって、水位と電圧
との関連を表している。FIG. 4 is a diagram showing an example of water level signal output from a variable resistor in the quantitative pump device of the present invention, showing the relationship between water level and voltage.

【図５】本発明定量性ポンプ装置における可変抵抗器か
らの水位信号出力例を示した線図であって、水位と電流
との関連を表している。FIG. 5 is a diagram showing an example of water level signal output from a variable resistor in the quantitative pump device of the present invention, showing the relationship between water level and current.

【図６】本発明定量性ポンプ装置における水位変動と送
水量との関係を示す線図である。FIG. 6 is a diagram showing a relationship between water level fluctuation and water supply amount in the quantitative pump device of the present invention.

【図７】従来のポンプ装置における水位変動と送水量と
の関係を示す線図である。FIG. 7 is a diagram showing a relationship between water level fluctuation and water supply amount in a conventional pump device.

【図８】本発明定量性ポンプ装置における作動の流れを
示すフローチャートである。FIG. 8 is a flowchart showing the flow of operation in the quantitative pump device of the present invention.

【符号の説明】[Explanation of symbols]

１ 処理槽 ２ 水中ポンプ設置槽 ３ ポンプモータ ４ 制御回路 ６ 昇降運動を回転運動に変換する機構 ６ａ フロート ６ｂ 操作軸 ６ｃ 可変抵抗器 1 Processing Tank 2 Submersible Pump Installation Tank 3 Pump Motor 4 Control Circuit 6 Mechanism for Converting Lifting Motion to Rotating Motion 6a Float 6b Operating Axis 6c Variable Resistor

Claims (1)

【特許請求の範囲】[Claims] ポンプ設置槽内の水位変動に伴い昇降するフロートの昇
降運動を回転運動に変換する機構と、上記機構により操
作軸を回動操作される可変抵抗器と、上記可変抵抗器か
らの電気信号を受けて後記ポンプモータの回転数を変化
させる電気信号を出力する制御回路と、上記制御回路か
らの電気信号を受けて駆動されるポンプモータを備え、
水中ポンプ設置槽内が高水位時にはポンプモータの回転
数を減少させ、低水位時にはポンプモータの回転数を増
大させるよう構成したことを特徴とする合併処理浄化槽
用定量性ポンプ装置。A mechanism that converts the up-and-down motion of the float that moves up and down according to the fluctuation of the water level in the pump installation tank into a rotary motion, a variable resistor whose operation shaft is rotated by the mechanism, and an electric signal from the variable resistor. A control circuit for outputting an electric signal for changing the rotation speed of the pump motor, which will be described later, and a pump motor driven by receiving an electric signal from the control circuit,
A quantitative pump device for a combined treatment septic tank, which is configured such that the rotation speed of the pump motor is reduced when the submersible pump installation tank has a high water level, and the rotation speed of the pump motor is increased when the water level is low.