JPH09136094A - Quantitative pump apparatus for combination treatment purification tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct highly efficient purification treatment and to respond to the requirement for changing the quantity of water by decreasing (increasing) the number of revolution of a pump motor when the water level of a tank equipped with a submergible motor pump is high (low), installing a set water amount shifting mechanism for changing the sending water amount of the pump. SOLUTION: When the water level of a tank equipped with a submergible motor pump is high because of a large amount of wastewater from homes, electric signals from a pressure sensor 6 and a revolution sensor 7 are sent to a control circuit part 3 so that a power source which decreases the number of revolution of a motor pump 2 to respond to a pump head at the level reduces the rotation speed of a submergible motor pump. When the water level of the tank equipped with the submergible motor pump is low because of small amount of wastewater from homes, the power source which increases the number of revolution of the pump motor 2 increases the rotation speed of the submergible motor pump so that the variation in the quantity of water sent to a treatment tank is reduced. When the quantity of water is required to change, a set water amount shifting mechanism 8 is operated to change a set water amount.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION The present invention relates to a quantitative pump device for a combined treatment septic tank.

[0002]

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 quantitatively send dirty water to the treatment tank to keep the load on the processing tank constant. Is an essential requirement.

In the combined treatment septic tank, a tank called a flow rate adjusting tank for temporarily storing the sewage discharged from the home is provided in front of the processing tank, and from this tank to the processing tank via a measuring tank by an underwater pump or the like. Although water is being sent, the water level of the above flow rate adjustment tank constantly fluctuates due to fluctuations in the amount of water discharged from households, and the water flow rate of the pump also fluctuates significantly due to fluctuations in the water level.
It becomes impossible to quantitatively send sewage to the treatment tank. Also, the septic tank has different volumes depending on the target personnel, and naturally the amount of water required for pumps also differs, but in order to cope with the gradual increase in population in the area, it is necessary to replace or add pumps.

[0004]

An object of the present invention is to reduce waste water change due to fluctuation of water level in the submersible pump installation tank when the wastewater is sent from the submersible pump installation tank to the treatment tank through the measuring tank in the combined treatment septic tank. A highly efficient purification process is performed,
Another object of the present invention is to provide a quantitative pump device that can immediately meet the demand for changing the amount of water.

[0005]

The quantitative pump device for combined treatment septic tank according to the present invention has a submersible pump setting tank called a flow rate adjusting tank or the like as a pre-stage tank of the processing tank, and detects the water level in the submersible pump setting tank. Is attached to the pump motor, and the rotation speed sensor that detects the actual rotation speed of the pump motor and outputs it as an electric signal is attached to the pump motor, and the pump motor receives the electric signals from the pressure sensor and the rotation speed sensor. The control circuit to drive the pump at an appropriate speed is installed outside the tank by extending it from the pump motor.When the submersible pump installation tank has a high water level, the rotation speed of the pump motor is reduced, and when the water level is low, the pump motor rotates. The water flow amount setting mechanism for increasing and decreasing the water supply amount of the pump while maintaining the relational ratio between the water level in the tank and the rotation speed of the pump motor while increasing the number of circuits. Annexed, optionally further, it is to attached the display means of the tank water level and setting the amount of water.

[0006]

Embodiments will be described below with reference to the drawings of the embodiments.

In FIG. 1, reference numeral 1 denotes a submersible pump installation tank called a flow rate adjusting tank or the like, which is provided as a pre-stage tank of a treatment tank (not shown) for temporarily storing sewage discharged from home. . 2 is a pump motor driven by a power source from a control circuit unit 3 described later at a rotation speed corresponding to the water level fluctuation in the submersible pump installation tank 1, 4 is submerged in the submersible pump installation tank 1 and driven by the pump motor 2 In the submersible pump, the suction port 4a is opened near the bottom of the water in the submersible pump installation tank 1, and the discharge port 4b is extended to the upper part in the measuring tank (not shown). ing.
Reference numeral 4'denotes a preliminary pump which is alternately operated with the submersible pump 4 and is operated simultaneously with the submersible pump 4 when the water in the tank is abnormally increased. Reference numeral 5 is a head cover fitted above the pump motor 2, and 6 is a pressure sensor attached to the outside of the head cover 5, which takes out the detected water level in the submersible pump installation tank 1 as an electric signal and controls the electric signal. It is sent to the circuit section. 3 is a pump motor 2
It is an external control circuit unit that is installed outside the tank by being guided from the submersible pump, and receives an electric signal from the pressure sensor and, for example, by phase control having a circuit configuration as shown in FIG. When the water level in 1 is high, the rotational speed of the pump motor 2 is reduced, and when the water level is low, the rotational speed of the pump motor 2 is increased to supply power to the pump drive unit. Reference numeral 7 denotes a rotation speed sensor mounted on the upper end of the motor shaft in the head cover 5. The pump motor 2 is not always driven at an appropriate rotation speed due to the influence of load or the like. Therefore, the actual rotation speed of the pump motor 2 detected by the rotation speed sensor 7 is sent to the control circuit unit 3 as an electric signal. In FIG. 3, 8 is a set water amount shift mechanism operated by a switch or dial, 9 is a set water amount display means displayed by a lamp or the like, 10 is a tank water level display means displayed by a lamp or the like, and 11 is a lamp or the like. The water increase warning display means indicated by, and the operation / stop display means 12 indicated by a lamp or the like. Since the relationship between the water level and the rotation speed for each set water quantity is determined as shown in FIG. 4, this relationship is stored in a microcomputer and the set water quantity shift mechanism 8 is driven to drive the water level in the tank and the pump motor rotation speed. That is, the water supply amount of the pump is increased or decreased while maintaining the relationship of.

[0008]

When a large amount of sewage is discharged from the home and the inside of the submersible pump installation tank 1 reaches a high water level, electric signals from the pressure sensor 6 and the rotation speed sensor 7 are sent to the control circuit section 3 and at that water level. The submersible pump 4 is rotated at a low speed by supplying power to the pump drive unit to reduce the number of revolutions of the pump motor 2 so as to correspond to the pump head of When the water level becomes low,
A power source for increasing the rotation speed of the pump motor is sent to the pump drive unit to rotate the submersible pump 4 at a high speed, and the fluctuation range of the amount of water supplied into the treatment tank due to the change in water depth is significantly reduced. It will be. Then, the water level fluctuation state in the submersible pump installation tank 1 is displayed by using a signal from the pressure sensor 6 so that the water level display means 10 such as a lamp can pick up from the outside of the tank.

Further, when it is necessary to change the water amount, the set water amount shifting mechanism 8 is operated to increase or decrease the set water amount while maintaining the relationship between the water level and the pump motor rotational speed. . For example, the set water amount can be switched by one pump as shown in FIG. 5 by a stepwise switch mechanism. The set water amount increase / decrease state is displayed by the set water amount display means 9 such as a lamp so that the water can be taken out of the tank.

[0010]

EFFECTS OF THE INVENTION According to the present invention, the change in the amount of water to be sent due to the fluctuation of the water level in the submersible pump installation tank is small, the load on the processing tank can be kept constant, and highly efficient purification processing can be performed. It also has the feature that it can immediately respond to the need to change the amount of water. Further, since the control circuit section is an external type, it is possible to have an embodiment in which the water level status in the submersible pump installation tank and the change status of the installed water quantity are grasped from outside the tank by a display means such as a lamp, and the above tank. Since the situation of the internal water level is grasped by using the signal from the pressure sensor, there is a secondary effect that it is not necessary to separately install a dedicated water level gauge as in the conventional case.

[Brief description of the drawings]

FIG. 1 is a side view showing a part of the configuration of the device of the present invention.

FIG. 2 is a block diagram illustrating a circuit configuration of the device of the present invention.

FIG. 3 is a plan view illustrating a panel configuration of a control circuit unit in the device of the present invention.

FIG. 4 is a diagram showing a relationship between a water level and a rotation speed for each set water amount according to the present invention.

FIG. 5 is a diagram showing a relationship between a water supply amount and a head according to the present invention.

[Explanation of symbols]

 1 Submersible Pump Installation Tank 2 Pump Motor 3 Control Circuit Section 6 Pressure Sensor 7 Rotation Speed Sensor 8 Installation Water Volume Shift Mechanism 9 Set Water Volume Display Means 10 Tank Water Level Display Means

Claims (2)

[Claims] 1. A pressure sensor for outputting a detected water level in the submersible pump installation tank as an electric signal, and an actual rotation of a pump motor, which has a submersible pump installation tank such as a flow rate adjusting tank as a pre-stage tank of the processing tank. A pump motor is provided with a rotation speed sensor for detecting the number of revolutions and outputting it as an electric signal, and a control circuit unit for receiving the electric signals from the pressure sensor and the rotation speed sensor to drive the pump motor at an appropriate rotation speed is provided. Installed in the outside of the tank, and when the inside of the submersible pump installation tank has a high water level, the rotation speed of the pump motor is reduced, and when the water level is low, the rotation speed of the pump motor is increased and the water level in the tank It is characterized in that a set water amount shift mechanism for holding the relational ratio of the pump motor rotations and increasing or decreasing the water supply amount of the pump is additionally provided. Quantitative pump device for combined treatment septic tank. 2. A submersible pump installation tank called a flow rate adjustment tank or the like as a pre-stage tank of the processing tank, a pressure sensor for outputting a detected water level in the submersible pump installation tank as an electric signal, and an actual rotation of a pump motor. A pump motor is provided with a rotation speed sensor for detecting the number of revolutions and outputting it as an electric signal, and a control circuit unit for receiving the electric signals from the pressure sensor and the rotation speed sensor to drive the pump motor at an appropriate rotation speed. Installed in the outside of the tank, and when the inside of the submersible pump installation tank has a high water level, the rotation speed of the pump motor is reduced, and when the water level is low, the rotation speed of the pump motor is increased and the water level in the tank A set water amount shift mechanism for holding the relation ratio of the pump motor speed and increasing or decreasing the water supply amount of the pump is attached, and a display means for the water level in the tank and the set water amount is attached. And wherein the a, combined treatment septic tank for quantitative pumps device.