JPH0733249A - Pumping equipment for semi-fluid materials - Google Patents

Abstract

(57) [Summary] [Purpose] Efficiently prevent semi-fluid substances that generate offensive odors, such as mud dredged in rivers, lakes and marshes, sewage sludge at drainage treatment plants, etc. and prevent odor pollution. Provided is a semi-fluid substance pressure-feeding device that conveys a long-distance destination to a destination. [Structure] A hopper 2a, 2b and a rotary feeder 4 connected to the hopper 2a, 2b. The rotary feeder 4 is housed in a cylindrical casing 4c having an opening at the top, and is rotated by a horizontal rotating shaft 4b stored in the casing 4c. Rotor 4a having a plurality of concave spaces F arranged at equal pitches around the circumference
And a bottom concave space F on the lower side wall of the casing 4c.
A compressed air for discharging the semi-fluid substance taken in into the rotary shaft 4b in the direction of the rotating shaft 4b and a high pressure jet water injection pipe 4h and a discharge pipe 4g are arranged, and a concave space F positioned next to the lowermost concave space F is arranged. The drain 4 and the drain 4i for the drain water connected to the vacuum pump 20 are provided in the casing 4c facing the.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pumping device for a semi-fluid substance that produces an offensive odor such as mud dredged in rivers, lakes and marshes, sewage sludge in sewage treatment plants and the like, and treated sludge in human waste treatment plants. Is.

[0002]

2. Description of the Related Art The transportation of these semi-fluid substances is carried out by trucking the soft mud and mud that have been dredged and unloaded at sea up to now, or by dewatered sewage sludge in a sewage treatment plant by belt conveyor. It was transferred to the target remote landfill site or incinerator in the sewage treatment plant.

[0003]

However, in recent years, urbanization of residential land has progressed rapidly, and these objectives have been obtained from surroundings such as landfills and sewage treatment plants, which were conventionally located far away from residential areas, and sampling sites. The area where the residents live becomes adjacent to the route leading to, and when carrying such a foul-smelling package uncovered, the wind direction will cause foul-pollution to the residents, and complaints will frequently occur. It was In addition, the transfer distance of these semi-fluid substances has been increasing in recent years, and the advent of long-distance transportation means has been long awaited.

[0004]

In order to solve the above problems and to transport a semi-fluid substance having an offensive odor over a long distance without hindrance, according to the present invention, a hopper for receiving the semi-fluid substance and a rotary connected to a lower portion of the hopper are provided. A semi-fluid substance pressure-feeding device comprising a feeder, wherein the rotary feeder is housed in a cylindrical casing having an opening at the top and is rotatable around a horizontal rotation axis and arranged at equal pitches around the circumference. Of the compressed air and the jet water flow for discharging the semi-fluid substance taken into the lowermost concave space on the lower side wall of the casing in the rotation axis direction of the rotor. An injection pipe and a discharge pipe are respectively arranged, and water and residual water in the concave space are provided in the casing facing the concave space located next to the lowermost concave space of the rotor in the rotational direction. And configured to include an outlet air.

[0005]

In the semi-fluid substance pumping apparatus of the present invention, the semi-fluid substance stored in the hopper is filled in the concave space of the rotary feeder under the hopper, and the semi-fluid substance is sequentially moved to the lowermost portion with the rotation of the rotor, and is moved to the lowermost position. The semi-liquid substance filled in the concave space is pressed toward the discharge pipe by the jet water flow and the compressed air flowing in from the injection pipe and discharged, and is conveyed to a distant destination via the discharge pipe.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a semi-fluid substance pumping device (hereinafter referred to as a pumping device), FIG. 2 is a side vertical cross-sectional view of the pumping device, and FIG. 3 is a schematic side view of a transportation system using the pumping device. The pressure feeding device 1 includes two upper and lower hoppers 2a and 2b.
And a rotary feeder 4 connected to this,
The rotary feeder 4 accommodates a rotor 4a that rotates together with a rotation shaft 4b in a cylindrical casing 4c having an open top. The rotor 4a has blades 4d radially provided in a radial pattern at equal pitches on the circumference.
The diameters d, 4d, ... Are reduced in a concave shape to form a concave space F with the casing 4c. Rotating shaft 4b and rotor 4
It is keyed to a and is rotated as one body, and abrasion resistant metals 4e and 4f are attached to both sides of the tip of the blade 4d and the inner surface of the upper end of the casing 4c. Further, a wear resistant lining (not shown) is also applied to the inner peripheral surface and both side surfaces of the casing 4c. Below both side plates of the casing 4c,
As shown in FIG. 2, a discharge pipe 4g for discharging the semi-fluid substance in the concave space F located at the lowermost portion and an injection pipe 4h for supplying compressed air and a jet water flow for transferring these semi-fluid substances are arranged. The compressed air supplied from the compressed air source 10 and the high-pressure jet water flow supplied from the high-pressure water source are injected into the injection pipe 4h via the jet nozzle 12a.
Pumping capacity 1000m of semi-fluid material ^{3 /h(16.7m 3} / m
in), compressed air is 7.5 kg / cm ² and 300
m ³ / min, high pressure jet is 100-150 kg / cm ² 1
Supply about m ³ / min. Also, as shown in FIG.
The concave space F corresponding to the second order in the rotation direction of the lowermost concave space F
A discharge port for sucking the residual compressed air and water is provided in the casing 4c facing to, and is connected to the vacuum pump 20 and the drain groove 22 of the drain so as to be sucked and removed. The rotor 4a of the rotary feeder 4 is chain driven together with the rotary shaft 4b in a certain direction by a reduction motor (not shown).

On the other hand, an agitator 3 is arranged inside the hopper 2a. The agitator 3 includes a vertical rotating shaft 3a pivotally supported by a pair of upper and lower bearings 3c and 3d, and horizontal paddles 3b having a plurality of upper and lower stages.
Is radially attached, and is fixed to the wall surface of the hopper 2a by the upper and lower supports 3f and 3f. The rotating shaft 3a is rotationally driven by a reduction motor 3e fixed outside the hopper 2a by a chain wheel 3g attached to the lower shaft end. Guide plates 2c, 2c for guiding the semi-fluid substance flowing down in the hopper 2b to the rotary feeder 4 are attached to the inner right and left sides of the hopper 2b. Support 3f, 3
The f is formed in a V-shaped cross section so as to facilitate the movement of the semi-fluid material flowing down from the top.

The operation of the pressure feeding device 1 configured as described above will be described. FIG. 3 shows an embodiment of a transportation system incorporating such a pressure feeding device 1, in which dredged semi-fluid substances such as sludge, soft mud and mud are transferred by the earth carrier 100 after being collected, and the barge 300. Backhoe nearby
200 is thrown into the hopper 2 a of the pressure feeding device 1. The semi-fluid material charged into the hopper 2a is agitated and fluidized by the stirrer 3 and flows downward, and is sequentially filled in the concave space F as the rotor 4a of the rotary feeder 4 rotates and is guided downward and guided to the bottom. When the position is reached, the jet water flow delivered from the high-pressure water source 12 and the compressed air supplied from the compressed air source 10 are pressure-fed to the discharge pipe 4g.
Is discharged more. Rotation of the rotor 4a further progresses, and compressed air and water in the concave space F that has passed the lowermost position are sucked into the suction holes 4i.
Is discharged to the outside by the vacuum pump 20, and the hopper 2
Backflow into b is prevented. The semi-fluid substance discharged from the discharge pipe 4g in this way is transferred to a harbor or land via the discharge pipe 30 along the sea, and is transported to the landfill 400 of the destination and discarded.

In the embodiment shown in FIG. 3, the collected semi-fluid material is transported to the land by the pressure-feeding device 1 installed on the sea barge 300. For example, sewage sludge generated at a sewage treatment plant or a human waste treatment plant. It can also be used as a facility to transfer the treated products of the above in the treatment plant.

As described above, by transporting a semi-fluid substance accompanied by a malodor using the semi-fluid substance pressure-feeding device 1 of the present invention, not only can the semi-fluid substance be pressure-fed at a high concentration, but also It is possible to keep the working environment around the equipment clean without generating a bad odor. Further, since the semi-fluid material can be transferred almost automatically without requiring manpower, the transportation cost can be reduced as compared with the conventional truck transportation and belt conveyor transportation. In addition, in addition to compressed air, a strong pressing force due to the dynamic pressure of high-pressure jet water, which has a much larger mass than air, is used to pump out the semi-fluid material filled in the concave space located at the bottom of the rotor. Since it is used, all the transported materials in the concave space can be completely discharged to the discharge pipe. Therefore, the discharge efficiency is increased.

[0011]

As described above, according to the present invention, it is possible to prevent odor pollution during transfer of a semi-fluid substance accompanied by a bad odor, and to automatically and efficiently convey the semi-fluid substance to a destination. It also has the advantages that the transportation cost is lower than that of truck transportation, and the equipment cost is much smaller than that of belt conveyor transportation.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a semi-fluid material pumping apparatus showing an embodiment of the present invention.

FIG. 2 is a side vertical cross-sectional view of a semi-fluid substance pumping apparatus according to an embodiment of the present invention.

FIG. 3 is a schematic side view of a transportation system showing an embodiment of the present invention.

[Explanation of symbols]

 1 Pumping device for semi-fluid material 2a Hopper 2b Hopper 3 Stirrer 3a Rotating shaft 3b Paddle 3c Bearing 3d Bearing 3e Reduced motor 3f Support 3g Chain wheel 4 Rotary feeder 4a Rotor 4b Rotating shaft 4c Casing 4d Blade metal 4f Abrasion resistance Abrasive metal 4g Discharge pipe 4h Injection pipe 4i Discharge port 10 Compressed air source 12 High-pressure water source 12a Jet nozzle 20 Vacuum pump 22 Drainage groove 30 Discharge pipe 100 Land carrier 200 Backhoe 300 Ship 400 Landfill

Claims (1)

[Claims] 1. A semi-fluid substance pressure-feeding device comprising a hopper for receiving a semi-fluid substance and a rotary feeder connected to a lower portion of the hopper, wherein the rotary feeder has a cylindrical casing having an opening at an upper portion thereof, and A rotor having a plurality of recessed spaces housed in a casing and rotatable around a horizontal axis of rotation and arranged at equal pitches on the circumference, and is incorporated in the bottommost recessed space on the casing side wall. Injected and discharged pipes for compressed air and jet water for discharging the semi-fluid substance in the direction of the rotation axis of the rotor are arranged respectively, and a concave space positioned next to the lowermost concave space of the rotor in the rotation direction is arranged. A semi-fluid substance pressure-feeding device provided with an outlet for water and air remaining in the concave space in the casing opposed to the casing.