JPS6052846B2 - sand pumping equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sand lifting device.

For example, a conventional sand pumping device in a sewage treatment facility will be explained based on FIGS. 3 and 4 are screens provided on the upstream and downstream sides of the settling basin 1, and 5 is a settling basin working room formed above the settling basin 1, A trolley 7 is disposed on rails 6 laid along the longitudinal direction of the sand settling basin 1 on the floor of the work room 5 so as to be able to move freely in the directions of arrows A and B. A jib crane 8 is movably disposed in directions C and D that are orthogonal to the traveling direction (directions of arrows A and B).

9 is a sand removal machine.

In the above configuration, when removing the sand accumulated on the bottom of the sand settling basin 1, the packet 10 of the jib crane 8 is lowered and the packet 10 grabs the sand, and then,
This earth and sand is put into a hopper 9a of a sand transporter 9, and transported to a predetermined location by the transporter 9.
In such a conventional sand lifting device, the jib crane 8 is indicated by arrow A,
The sediment on the entire bottom of the settling basin 1 cannot be removed unless it is moved not only in the B direction but also in the arrow C and D directions, and the structure is complicated and economically expensive, and the height of the work chamber 5 is It is necessary to increase the height.

Therefore, it is conceivable to install a screw conveyor on the bottom of the settling basin 1 to collect the sediment in one place, and lift the sediment with a packet elevator or blow it up with a pump, but with this configuration, the screw conveyor is constantly submerged. If a large amount of sand flows into the settling basin 1 at once due to a flood or the like, the conveyor may become buried and become inoperable.

The present invention provides a sand lifting device that solves these problems.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

This embodiment relates to a sand pumping device in a sewage treatment facility, in which a ceiling guide rail 11 is arranged along the longitudinal direction of each settling basin 1 on the ceiling of a settling basin working room 5 at a location above each settling basin 1. A monorail packet sand lifter 12 is suspended from each guide rail 11. Furthermore, a pair of floor guide rails 13 are fixed on the floor of the work room 5, narrowing each sand settling basin 1, respectively, and a movable chute 14 is mounted on each pair of guide rails 13 so as to be movable in the directions of arrows A and B. It is arranged. A chute 1 is located below the discharge port 14a of the chute 14.
A sediment receiving trough 15 is fixed along the movement direction of the trough 4 (direction of arrows A and B), and a sand receiving trough 15 is fixed along the direction perpendicular to the longitudinal direction of the trough 15 on the floor of the working room 5 below the discharge port of the trough 15. A conveyor 16 for transporting sand is provided. Also,
The lower part of the side surface of the sand settling basin 1 is a tapered surface 1b with a concave downward direction toward the bottom surface portion 1a of the sand settling basin directly below the guide rail 11.
It is formed in The width α of the bottom portion 1a of the sand settling basin is set to be slightly larger than the width β of the packet 17 in the open state, and the inclination angle θ of the tapered surface 1b is set to be larger than the angle of repose. In addition, 18 is a gate, 19 is a sand settling machine, and 20 is a skip hoist. In the above configuration, when removing the sediment accumulated in the sand settling basin 1, the sand pump 12 is first moved, for example, in the direction of arrow A, and the moving chute 1 is moved in front of the sand pump 12 as shown in FIG.
Leave 4 in position.

Next, the packet 17 of the sand lifter 12 is lowered as shown by the imaginary line in FIG. 4, and the packet 17 grabs the earth and sand on the bottom portion 1a. Next, the packet 17 is lifted and the sand lifter 12 is moved a little in one direction of arrow A to bring the packet 17 above the chute 14. Next, when the packet 17 is opened, the sediment in the packet 17 falls into the chute 14, is discharged from the chute 14 onto the trough 15, and is further discharged from the trough 15 onto the conveyor! The liquid is discharged onto the layer 16 and transported to a predetermined location. After opening the packet 17 as described above, the chute 14 is moved a little in the direction of the arrow A to open the bottom of the packet 17, and the sand is lifted again in the same manner as described above. By the way, when the dirt on the bottom part 1a is removed using the packet 17,
Since the earth and sand on the tapered surface 1b slides down and is brought onto the bottom surface portion 1a, the packet 17 only needs to be moved in the directions of arrows A and B.

In the above embodiment, independent ceiling guide rails 11 are provided above each settling basin 1, and a monorail packet sand lifter 12 is provided on each guide rail 11, but the guide rails 11 are connected. One zigzag ceiling guide rail may be formed, one monorail packet sand lifter 12 may be suspended from the guide rail, and the sand lifter 12 may be moved in a zigzag pattern.

As described above, according to the sand lifting device of the present invention, the mechanical part consists of a guide rail, a packet sand pumping machine, a moving chute and a trough, and the structure is relatively simple and economical compared to conventional devices. There is.

Furthermore, the height of the chamber in which these mechanical parts are housed can be made smaller than in the conventional example mentioned at the beginning. Furthermore, the lower part of the side surface of the settling basin is formed into a tapered surface that tapers downward toward the bottom of the settling basin directly below the guide rail, and the width of the bottom of the settling basin is made slightly larger than the dimension of the packet in its open state. Therefore, when the sediment on the bottom surface of the settling basin is removed by the packet, the sediment on the tapered surface slides down and is brought onto the bottom surface of the settling basin. Therefore, all the sediment in the settling basin can be removed by simply moving the packet along the bottom of the settling basin and removing the sediment.
Unlike the conventional jib crane mentioned at the beginning, there is no need to move it back and forth and left and right. Furthermore, since the mechanical part is located above the sand settling basin, even if a large amount of earth and sand enters the sand settling basin at once, this will not cause the sand lifting device to malfunction.

[Brief explanation of drawings]

1 and 2 show a conventional example, in which FIG. 1 is a longitudinal cross-sectional view and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1. 3 and 4 show an embodiment of the present invention, with FIG. 3 being a longitudinal sectional view and FIG. 4 being a sectional view taken along line 1-1 in FIG. 1...Sand settling basin, 1a...bottom part, 1b...
- Tapered surface, 5... Sand settling basin work room, 11... Guide rail, 12... Packet sand lifter, 14... Moving chute, 15... Truss, 17... Packet.

Claims (1)

[Claims] 1 A guide rail is provided above the sand settling basin, a bucket sand lifter is suspended from the guide rail so as to be freely movable, and a movable chute is provided between the sand settling basin and the guide rail that is movable in the same direction as the bucket sand lifter. A sand settling trough is provided on the side of the chute along the moving direction of the chute, and the lower side of the sand settling basin is formed into a concave tapered surface that goes down toward the bottom of the sand settling basin directly below the guide rail. A sand lifting device characterized in that the width of the bottom portion of the sand settling basin is slightly larger than the width of the bucket of the bucket sand pump in an open state.