JPH028763B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for continuously transporting sediment, sediment, etc., and in particular, a device for continuously transporting sediment, sediment, etc. from a sedimentation tank using a sand conveyor to save space. This invention relates to a device for continuously transporting sand, sludge, etc., which can be continuously transported out of the tank without causing spillage.

[Prior Art] Sand basins or sedimentation tanks in sewage treatment plants and the like in large cities are relatively deep and have a large capacity. For this reason, when a conveyor is used to transport the sediment, sludge, etc. that accumulates inside the tank out of the tank, the conveyor is required to have a structure that does not take up much installation space and has a high processing capacity.

However, conventionally, when carrying out the above-mentioned sediment, sludge, etc. out of the tank, a belt conveyor has generally been used throughout almost the entire process.

[Problems to be Solved by the Invention] However, since belt conveyors cannot be transported vertically and must be installed at an angle, they have the drawback of requiring a large amount of installation space.
It is also possible to use a screw conveyor to carry out the unloading work, but since there is a limit to its lifting angle (70°), using a screw conveyor will not effectively reduce the installation space. In addition, the friction caused by sedimentation and the like can cause severe noise, and even cause problems such as easy wear of the screw blades, etc.

On the other hand, there are skip hoists, bucket elevators, and the like as transport means that allow vertical transportation and do not take up much installation space (Japanese Utility Model Publication No. 151616/1983).

However, for skip hoists,
Since it is a batch operation and the processing capacity is low, it is not suitable as a means of transporting large-capacity sedimentation tanks.

In addition, regarding the bucket elevator mentioned above,
Although continuous transport is possible, since the bucket circulates in an unstable state, there is a problem in that the transported objects, such as grit, are likely to fall (overflow) during transport. Furthermore, since both of the transport means transport the objects in a state where they are exposed to the atmosphere, there is a problem in that they emit bad odors, and a cover is required to prevent this.

The present invention has been made to effectively solve the problems of the prior art described above, and its purpose is to collect sediment discharged from a large-capacity sedimentation tank without requiring much installation space and in a sealed state. It is an object of the present invention to provide a continuous conveyance device for sand, sludge, etc., which can be conveyed continuously and efficiently without causing spillage.

[Structure and operation of the invention] In order to achieve the above-mentioned object, the present invention is installed in the lowest sedimentation tank section forming a substantial sedimentation tank, and collects the sediment and sludge accumulated in the tank section. A conveyor that conveys to an intermediate tank formed between the ground and the ground, and a set of endless conveyor belts installed in the intermediate tank and stretched vertically so that their conveying surfaces are in close contact with each other. It is equipped with a sand belt conveyor that conveys the sand, sediment, etc. conveyed by the conveyor to the ground.

The sand, sludge, etc. accumulated in the lowest sedimentation tank, which essentially forms a sedimentation tank, is first conveyed to the intermediate tank by a conveyor, and then conveyed to the ground by a sand German conveyor. .

In particular, since the sand and sludge conveyor is vertically conveyed in a closed state by sandwiching the sand and scum between the conveying surfaces of a pair of endless conveyor belts that are in close contact with each other, the sand and sludge are conveyed vertically in a sealed state, which saves space and allows for continuous transport without spilling the load. It can be transported to the ground surface and does not require a deodorizing cover.

[Examples] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In Fig. 1, 1 is a sedimentation tank in a sewage treatment plant, and this sedimentation tank 1 is formed at the lowest part of the underground, and the lowest sedimentation tank part 1 forms a substantial sedimentation tank.
a, and an intermediate tank part 1b formed between the lowermost sedimentation tank part 1a and the ground 2.

The lowermost settling tank part 1a collects sediment, sediment, etc. deposited in the tank part 1a, and collects it in the corner part 3 of the intermediate tank part 1b.
A conveyor 4 such as a belt conveyor is installed in the intermediate tank section 1b, and a sand conveyor 5 is installed in the intermediate tank section 1b to carry out the sand, sediment, etc. carried out by the conveyor 4 to the ground 2.

The sand German conveyor 5 carries a pair of endless conveyor belts 6, 7 with driving rollers 8, 9 and driven rollers 10, 1 so that their conveying surfaces 6a, 7a are in close contact with each other.
Figures 2 and 3 are connected between each other.
As shown in the figure, a vertical upward transport path 12 for transporting objects such as sediment is formed between transport surfaces 6a and 7a whose both sides are in close contact with each other via rollers 42. The carry-in section 13 of the ascending transfer path 12 is connected to the discharging end 4a of the conveyor 4, and a hopper 15 is installed on the ground 2 below the discharging section 14 of the ascending transfer path 12.

Next, the operation of the above embodiment will be described.

First, the sediment deposited in the lowermost sedimentation tank part 1a,
The residue and the like are collected and conveyed by the conveyor 4 to the corner 3 of the intermediate tank section 1b. Collection of the above-mentioned sediment, sediment, etc. is carried out using a screen or the like.

Next, the above-mentioned sediment, sediment, etc. are continuously conveyed from the corner 3 of the intermediate tank 1b along the vertical direction to the ground outside the tank 1 by the sand German conveyor 5. After the sand, sediment, etc. are temporarily stored in the hopper 15 from the delivery section 14 of the sand German conveyor 5,
From this hopper 15, they are sequentially transferred to a truck or the like and disposed of.

In this way, since the sand German conveyor 5 having the vertical upward transfer path 12 is used to transport the sand, sediment, etc., the sand, sediment, etc. discharged from the comparatively deep and large-capacity sedimentation tank 1 can be easily removed. The residue, etc. can be carried out continuously and efficiently without requiring much installation space. In addition, since the sand German conveyor 5 conveys the sand in a sealed state by sandwiching the sand between the conveying surfaces 6a and 7a, it does not spill over or emit bad odors during conveyance, and unlike the screw conveyor, etc. Since there is less friction against sand, etc., there is less noise and high durability.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

Using a sand German conveyor, the sand, sludge, etc. are sandwiched between the conveying surfaces of a set of belts, conveyed vertically in a sealed state, and transported to the ground outside the tank, so there is no space for installing the conveyor. This can contribute to increasing the space required for sewage treatment equipment, and can be carried out continuously and efficiently without spilling cargo, and does not require a deodorizing cover.

[Brief explanation of drawings]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is an enlarged sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a sectional view showing the conveyance state. In the figure, 1 is the sedimentation tank, 1a is the lowest sedimentation tank, 1
b is an intermediate tank section, 4 is a conveyor, and 5 is a sandwich conveyor.

Claims (1)

[Claims] 1. A conveyor that is installed in the lowest sedimentation tank that forms a substantial sedimentation tank and conveys the sediment and sludge accumulated in the tank to an intermediate tank formed between the tank and the ground; It is installed in the intermediate tank section and consists of a set of endless conveyor belts that are hung vertically so that their conveying surfaces are in close contact with each other, and conveys the sand, sludge, etc. conveyed by the conveyor to the ground. A sand settling system characterized by being equipped with a chicon conveyor,
Continuous transport device for residue, etc.