JP3751341B2 - Waste water discharge device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for discharging waste water in which suspended matter and sediment are mixed.
[0002]
[Prior art and its problems]
Alternate operation of two pumps with two inner tanks recessed in the lower bottom of the outer tank into which the wastewater flows, and the suction port led to the lower part of the inner tank and the discharge port directed upward Thus, the above-mentioned inflow wastewater is lifted and discharged widely.
[0003]
However, many suspended matters and sediments are mixed in industrial wastewater and domestic wastewater.
[0004]
Even if the inside of the outer tank rises to a predetermined starting water level due to the inflow of waste water, the first pump is activated and the pumping discharge proceeds, and the water level in the first inner tank drops to the stop water level near the bottom. The waste water remains in the second inner tank. Also, even in the first inner tank where the pump is pumped and discharged, the pump suction water flow only eliminates solids around the suction port, and most of the suspended matter and sediment are discharged. It remains without. As a result, the spoiled scum generates gas and a bad odor drifts around. Moreover, due to the gradual increase of the residual deposit, the pump suction port is closed and the pumping function is impaired.
[0005]
OBJECT OF THE INVENTION
An object of the present invention is to provide an effective device that can be sucked and discharged by a pump together with waste water without leaving floating matters and precipitates mixed in inflow waste water.
[0006]
[Structure of the invention]
In the wastewater discharge apparatus according to the present invention, two inner tanks are provided at the bottom of the outer tank having a wastewater inlet opening into the tank and a wastewater pumping pipe led out of the tank. The two pumps are respectively accommodated so that the suction ports are opened to the lower parts in the inner tanks, the discharge ports of the pumps are connected to the waste water pumping pipes, and the bottoms in the outer tanks are connected. Provide an inflow passage that leads to one or both of the inner tanks, and vertically install side grooves along one side of the peripheral wall of each inner tank to reach the tank lower part from the upper edge, and rotate both side grooves respectively The two inner tanks are communicated with each other by an open-shaped flow groove extending in the direction opposite to the direction, and the other pump stop side by the suction and discharge action of the waste water accompanying the pump drive in one of the inner tanks The wastewater inflow action from the inner tank into the pump drive side inner tank is generated and swiveled into the inner tank. Flow is not increase the duration of the revolving whirling together brought forming amplification, and the water level of the pump stop side inner tank is configured to decrease in line with the water level of the pump drive side the tank.
[0007]
【Example】
Hereinafter, description will be made with reference to the drawings of the embodiments.
[0008]
Reference numeral 1 denotes an outer tank into which waste water flows, and has a waste water inlet 2 that opens toward the inside of the tank and a waste water pumping pipe 3 that extends toward the outside of the tank. The individual inner tanks 4a and 4b are recessed. The peripheral walls of these two inner tubs 4a and 4b are formed in a bowl-shaped inclined surface having a large diameter at the top and a small diameter at the bottom. 5a is a side groove vertically provided so as to reach the tank lower part from its upper edge along one side of the peripheral wall of one inner tub 4a, and 5b from its upper edge along one side of the peripheral wall of the other inner tub 4b. Hirakimizojo for communicating Tate設been gutter, these two side grooves 5a are 5, 5b direction of rotation and facing away was cast guiding a direction of in both inner tank 4a of each pump and 4b to reach a tank lower part It is a distribution groove. Reference numeral 6 denotes an inflow passage that leads from the outer tank 1 to one or both of the inner tanks 4a and 4b. In the drawing of the embodiment, a downward slope is given from the lower part in the outer tank 1 to the inner tanks 4a and 4b. And it is the aspect extended in the direction opposite to the rotation direction of a pump. 7a is a submersible waste pump accommodated so that the suction port 8 is opened to the lower part in one inner tank 4a, and 7b is accommodated so that the suction port 8 is opened to the lower part in the other inner tank 4b. In each of the submersible waste pumps, the discharge port 9 is detachably connected to the waste water pumping pipe 3. Reference numeral 10 denotes an elevating guide used when the submersible waste pumps 7a and 7b are attached and detached, and 11 denotes a scattering prevention cover attached near the opening of the wastewater inlet 2.
[0009]
[Action]
When the inside of the outer tub 1 rises to a predetermined startup water level due to the inflow of wastewater, the first pump 7a is started and the discharge and discharge of wastewater is started. After pumped discharge work is inner tank 4a, the water level up to the upper edge of the 4b reaches to progress, Ri Do that waste water in the first inner tank 4a is discharged pumped, the first pump 7a of pumped discharge wastewater flowing action from I I within the second inner tank 4b the action into the first inner chamber 4a through flow channels 5 Ji raw water level in the second inner tank 4b is first Although it begins to fall in synchronization with the water level in the inner tank 4a, the side grooves 5a, 5b communicating with the flow grooves 5 are vertically provided so as to reach the tank bottom from the upper edge of each inner tank 4a, 4b. The waste water inflow action flows into the first inner tank 4a together with the suspended matter at the surface layer and the sediment at the bottom of the tank in the second inner tank 4b . In addition, a swirl flow is formed and amplified in the first inner tank 4a by the waste water inflow action through the flow channel 5, and the waste water swirls up from the peripheral part along the sloping bowl-shaped inclined surface and descends from the central part. Thus, a convection action is generated, and therefore suspended matter and sediment in the wastewater are sucked from the pump suction port 8 while being vigorously stirred. When the water level in both the inner tanks 4a and 4b reaches a predetermined stop water level near the tank bottom, the first pump 7a stops. During this time, not only the waste water in the first inner tank 4 a but also the waste water in the second inner tank 4 b is pumped and discharged through the flow groove 5. This does not simply mean that waste water does not remain in the second inner tank 4b when the pump is stopped. Accordingly, the formation time of the swirl flow is maintained. That is, the stirring time of the suspended matter and the precipitate in the first inner tank 4a is increased accordingly. Therefore, suspended matters and sediments are easily pumped and discharged together with the waste water and do not remain in the tank.
[0010]
Next, when the water level in the outer tub 1 rises to a predetermined starting water level again due to the inflow of the waste water, the second pump 7b is started to discharge and discharge the waste water, and the water level of the inner tub 4a, 4b After reaching the upper edge, the waste water in the second inner tank 4b is pumped up and discharged, but the following operation is the same as in the case of the activation of the first pump 7a described above. Omitted.
[0011]
【The invention's effect】
According to the present invention, the waste water discharge device can simultaneously suck and pump the waste water in the pump stop side inner tank together with the waste water in the pump drive side inner tank, and the surface layer part in the pump stop side inner tank. The suspended matter and sediment at the bottom of the tank are not left, and the swirl flow is formed and amplified in the inner tank on the pump drive side, and the duration is increased. It is effective for the lifting and discharging of objects and sediments. Therefore, there is an advantage that generation of malodor caused by residual scum in the inner tank and blockage of the pump suction port due to deposits can be prevented.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional front view of a main part of the device of the present invention.
FIG. 2 is a longitudinal sectional side view of a main part in a state where an internal pump is removed from the device of the present invention.
FIG. 3 is a cross-sectional plan view of a main part in a state where an internal pump is removed from the device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer tank 2 Waste water inflow port 3 Waste water pumping pipe 4a One inner tank 4b The other inner tank 5 Flowing groove 5a Side groove 5b provided vertically in one inner tank Side groove 6 provided vertically in the other inner tank 6 Inflow channel 7a One pump 7b The other pump 8 Pump suction port 9 Pump discharge port

Claims (1)

Two inner tanks are arranged at the lower bottom of the outer tank having a wastewater inlet opening into the tank and a wastewater pumping pipe led out of the tank, Two pumps are respectively accommodated so that the suction port is opened to the part, the discharge port of each pump is connected to the waste water pumping pipe, and the inflow path leads from the lower bottom in the outer tank to one or both of the inner tanks Each side groove is provided vertically along one side of the peripheral wall of each inner tank so as to reach the lower part of the tank, and both side grooves are extended in the direction opposite to the rotational direction of the pump. The two inner tanks are communicated with each other by a bowl-shaped flow groove, and the inside of the pump drive side inner tank is pumped from the other pump stop side inner tank by the action of sucking and discharging waste water accompanying the drive of the pump in the one inner tank. As a result, the swirl flow is formed and amplified in the inner tank. Continued time is not increase, and the discharge device of the wastewater, characterized in that the water level of the pump stop side inner tank is configured to decrease in line with the water level of the pump drive side the tank.

Images