JP3138283B2 - Sewage transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transferring sewage generated by a screen device provided in a sewage treatment facility or another sewage treatment facility to a sewage treatment place such as an incinerator.

[0002]

2. Description of the Related Art Conventionally, a belt conveyor has been known as a sewage transfer device. However, since sewage is exposed and conveyed, there is a problem of odor. For this reason, the residue is transported after pretreatment such as washing with water at the transport source. In addition, since the conveyance by the belt conveyor is not suitable for long-distance conveyance, there has been proposed a residue conveyance device that performs pressure feeding using a reciprocating pump such as a piston pump or a plunger pump and a pipe.

[0003]

However, the reciprocating pump type residue transport device according to the above proposal has a feature that it can be transported in a sealed state over a long distance through a pipe. There is a drawback that the transport driving force is increased due to the pressure feeding inside. In particular, the transport resistance increases as the transport distance increases, and therefore, there is a disadvantage that a reciprocating pump having a large driving source must be prepared.

Accordingly, the present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a sewage transfer apparatus which reduces the transfer resistance of sewage.

[0005]

According to the present invention, in order to achieve the above object , the residue generated by the screen device is removed by the screen.
Conveyed to a predetermined residue processing place away from the clean equipment
A residue transport device, wherein the residue is transported by a piston rod.
The pressure is fed into the pipe by the reciprocating motion of the pad.
The residue is heated to 40 ° C to 90 ° C by a heating means.
It is characterized in that that.

[0006]

[Action] In the above structure, <br/> and residue was heated by heating means is pushed into the pipe by the backward movement of the piston rod. Then, the heated residue has a small frictional resistance with the inner wall of the pipe, so that it can be efficiently transported in the pipe.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an apparatus according to one embodiment. A piston pump 2 is provided at a lower portion of the hopper 1 into which the residue is put. An opening provided at an upper wall of a cylinder 2a of the piston pump 2 communicates with a lower portion of the hopper 1, and a piston rod 2 is provided. When the b 2 is moved back (the position indicated by the solid line in FIG. 1), a part of the residue a in the hopper is configured to be introduced into the cylinder 2a by gravity. The piston rod 2b is configured to be able to reciprocate at a predetermined stroke by a hydraulic actuator 3, similarly to a known piston pump.

[0008] H is a heater comprising an electric heater provided outside the hopper 1, and heats the residue a in the hopper 1 to 40 ° C.
It is configured so that it can be heated to about 90 ° C, preferably about 70 ° C. That is, the heater H is configured so as to be turned on and off by a temperature sensor (not shown) provided on the inner wall surface below the hopper 1, and maintains the residue a in the above-mentioned temperature range. ing.

At the end of the cylinder 2a opposite to the side where the actuator 3 is provided, there is connected a pipe 4 for transporting the waste a to a waste processing place such as an incinerator. A check mechanism 10 is provided in the portion.
As shown in FIG. 2, the check mechanism 10 includes a plurality of check pieces 10a, 10a... Made of leaf springs and a ring member 11 having an inner diameter substantially equal to the inner diameter of the pipe 4.
Each of the check pieces 10a, 10a,... Has a wide end at one end provided on the ring member 11, and is fixed with a screw 12 with a slight gap provided on the inner periphery of the ring member 11. The other end of each check piece 10a is tapered, and the tapered portion is curved and extends to the center position of the pipe 4. Therefore,
When all the check pieces 10a are attached to the ring member 11, the check pieces are formed so as to cover the cross section of the pipe 4. The non-return mechanism 10 is attached to the pipe 4 by sandwiching the ring member 11 between the flange of the cylinder 2a and the flange of the pipe 4 so that the tapered portion at the other end faces the moving direction of the residue a. It is done with finding.

A perforated pipe 20 is provided near the outlet of the pipe 4. The perforated tube 20 has a predetermined length and has the same pipe shape as the pipe 4. Around the perforated tube, there are a number of small holes that do not allow the passage of the residue but allow the water in the residue to pass. Are provided. In addition, 21 in the figure is a water receiver provided below the porous tube 20.

In this embodiment, the actuator 3
When the piston rod 2b is moved backward, a part of the residue in the hopper 1 heated by the heater H is put into the cylinder 2a. Next, when the piston rod 2a moves forward,
The residue a is pushed out to the check mechanism 10 side. The extruded residue a spreads the check pieces 10a, 10a,.
And is conveyed into the pipe 4. When the piston rod 2b moves back again, the check mechanism 10 side becomes negative pressure and acts so as to reverse the residue a in the pipe 4, but the check pieces 10a, 10a. Since the passage is closed by the action, the residue a does not flow backward. In this manner, the heated residue a is pressure-fed into the pipe 4 one after another every time the piston rod 2b moves forward, and can be transported to a predetermined place. In this transport, since the residue is heated, the fluidity is high, and therefore, the frictional resistance with the inner wall of the pipe 4 is small, and the transport can be performed with a small pressing force.

When the residue a is pumped through the pipe 4 and reaches the perforated pipe 20 provided on the discharge side of the pipe 4, the water in the residue a is squeezed out from the small holes 20a by the pressure of the pump. And flows out to the water receiver 21. Therefore,
The residue a that has passed through the perforated tube 20 is dehydrated to become a residue,
Subsequent incineration and landfilling can be facilitated. Note that the subsequent movement of the dewatered residue in the pipe 4 is a small movement distance, so that the driving power of the actuator 3 is not increased.

In addition to the above-described means for heating the residue, steam may be blown into the residue, or the pipe 4 may be heated.

As described above, in this embodiment,
Since the residue is heated by the heater H to increase the fluidity and is transported, the transport resistance is small, and therefore, the power of the driving source can be reduced.

[0015]

According to the present invention, there is provided a sewage transfer device for transporting sewage.
The feed is performed by reciprocating the piston rod and feeding it into the pipe.
The pressure-fed residue is heated to 40 ° C.
Since the heating is performed at 90 ° C. , the conveyance resistance is small, and therefore the power of the driving source can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment apparatus.

FIG. 2 is a detailed view of a check mechanism.

[Explanation of symbols]

 2b Piston rod 4 pipe H heater (heating means)

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) C02F 11/00 E02B 5/08

Claims (1)

(57) [Claims] (1) The residue generated by the screen device is removed from the screen.
Conveyed to a predetermined residue processing place away from the clean equipment
A residue transport device, wherein the residue is transported in a pipe by reciprocating piston rods.
The residue is fed to the heating means.
A residue transport device characterized in that the temperature is further raised to 40 ° C to 90 ° C.