JPS6134340Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention mainly relates to a vertical screw conveyor device suitable for treatment and for taking out substances separated and settled in a settling tank from the processing tank and the settling tank without stirring the tank. be.

Conventionally, various means have been taken to remove substances separated and settled in various treatment ponds, sedimentation ponds, etc., such as earth and sand, sludge, etc., from the ponds, but the most common method is to use a submersible pump. It is known to use bucket conveyors in a cross pattern.

However, when these conventional means operate,
Often, stirring occurs in the pond, causing sediment and other sediment that has been separated and settled to be mixed with the liquid, reducing the efficiency of separation and extraction, making it impossible to perform a sufficient solid-liquid separation process.

On the other hand, the screw conveyor has a simple conveyance structure and is expected to be convenient to use, but it is not suitable for use underwater, and is used for conveying various conveyed items supplied from hoppers. However, at present it is hardly used for removing sediment that separates in water.

The reason for this is, of course, due to the functionality of the screw conveyor, but another reason is that a suitable vertical screw conveyor device has not yet been obtained.

In view of the above-mentioned circumstances, the present invention has been developed to develop a screen that can efficiently remove precipitates even in water, increase the solid content, and simplify subsequent solid-liquid separation operations. The purpose is to provide a Yukon Bear device, especially a vertical screw conveyor device that can be used in a vertical or nearly vertical mode, and has a double screw structure in which an outer screw suppresses agitation in water and pushes sediment. It is characterized by a structure in which the introduced material is introduced, and the introduced material is raised by an inner screw and discharged.

Embodiments of the present invention will be further described below based on the accompanying drawings.

FIG. 1 shows an example of a screw conveyor device according to the present invention, FIG. 2 is a cutaway view of the main part thereof, and FIG. 3 is a sectional view taken along the line A-A in FIG. 2.

In these figures, reference numeral 1 designates an inner cylinder, which has a discharge port 8 at the top, and a screw conveyor 3 that rotates simultaneously from a motor 4 via a pulley 5, a belt 7, and a pulley 6. The screw conveyor 3 is a conveyor that can raise and transport the internal conveyed object upward by a transmission mechanism from the motor 4.

On the other hand, reference numeral 2 denotes an outer cylinder which is disposed overlapping approximately the lower half of the inner cylinder 1 and which, together with the inner cylinder 1, forms a double structure, which is the basic configuration of this invention. It is disposed so as to be capable of rotating relative to the inner cylinder 1 via a transmission mechanism consisting of pulleys or sprocket wheels 11, 12 and a belt or chain 13, which is driven by a motor 10 mounted on a fixed stand 9 which is usually placed on the ground, and a screw 14 is provided on the outer periphery of its lower end in the direction opposite to the conveying direction of the screw conveyor 3 inside the inner cylinder 1, i.e., in the direction of pushing downward.

In this case, the screw conveyor 3 inside the inner cylinder 1
The screw 14 at the lower end of the outer cylinder 2 is essentially the inner cylinder 1.
The inner side is conveyed in the upward direction and the screw 14 on the outer cylinder 2 side
It is sufficient to act on the downward pushing side. Therefore, the direction of the blades of both screws 3 and 14 may be changed, or the direction of rotation may be changed, and any design is possible.

In the double-tube structure including the inner tube 1 and the outer tube 2 as described above, a screw 14 provided on the outer periphery of the lower end of the outer tube 2 is further surrounded by a screw 14 as shown in FIG. As shown in the figure, a short cylindrical cover tube 15 having an opening 16 at the top is installed, and this covers the lower end of the screw conveyor 3 extending downward inside the inner tube 1 at its bottom. 21, and is fixed to the lower end of the inner cylinder 1 extending downward from the lower end of the outer cylinder 2 by a bolt 18.

Therefore, this cover tube 15 has an integral structure with the inner tube 1, and as the outer tube 2 rotates, the upper opening 1 is formed between the screw 14 at the lower end of the outer tube 2 and the inner wall surface of the cover tube 15.
A screw conveyor mechanism is made to push the sediment introduced from 6 downwards.

Therefore, as is clear from the figure, a communication port 17 is opened at the lower end of the inner cylinder 1 and communicates with a space formed on the inner surface of the cover cylinder 15.

The length of the cover tube 15 and the pushing capacity of the screw 14 are preferably determined depending on the place of use. Therefore, the cover tube 15 and the screw 14 are designed to be detachable from the inner tube 1 and the outer tube 2, respectively. It is extremely advantageous to do so.

In the figure, reference numerals 19 and 20 are mounting adjustment bolts for centering.

The conveyor device of the present invention is constructed as described above, and the function of using it to remove sediments such as sand or sludge from a sedimentation pond will be explained first.
The main body having a double cylinder structure as described above is installed so that the lower half thereof, that is, most of the outer cylinder 2 is submerged in the water, and the fixed base 9 is stably held. Then, in this state, when the motors 4 and 10 are operated and the screw conveyor 3 in the inner cylinder 1, the outer cylinder 2, and the screw 14 at the lower end of the outer cylinder 2 are rotated, the sediment is removed from the lower end of the outer cylinder 2 in the pond. It enters into the cover tube 15 through the opening 16 at the top of the cover tube 15 by the screw 14, is pushed downward by the screw 14, and enters the inside of the inner tube 1 through the communication port 17 at the lower end of the inner tube 1. It leads to entering.

Here, since the screw conveyor 3 in the inner cylinder 1 is rotating so as to convey it in the upward direction, the sediment that has entered the inner cylinder 1 gradually rises according to its conveying action. It is discharged to the outside of the system through the discharge port 8 at the top of the inner cylinder 1.

In the above case, the screw conveyor 3 in the inner cylinder 1 and the screw 14 at the lower end of the outer cylinder
Each capability can be selected depending on the installation location.
It is to be determined.

In particular, if the downward conveyance force of the screw 14 at the lower end of the outer cylinder 2 is made strong, the pushing capacity becomes large.
It can exert sufficient effect even in a pond.

Thus, with the screw conveyor device of the present invention, it is possible to take out the sediment while it is placed almost upright in a pond, and moreover, the overall capacity of the screw conveyor at the lower end of the outer cylinder and the screw conveyor inside the inner cylinder is improved. Therefore, the precipitate can be efficiently taken out to the ground.

As described above, the present invention adopts a double structure consisting of an inner cylinder and an outer cylinder which rotates relative to the inner cylinder, and by using a screw conveyor inside the inner cylinder and a screw at the bottom end of the outer cylinder in combination, the screw at the bottom end of the outer cylinder pushes down the sediment to be removed, and the screw at the bottom end of the outer cylinder raises it and discharges it. Therefore, it can be installed in a settling basin in an upright position, making it easy to remove the settled earth, sand, sludge, etc., and it does not require a large amount of space like a conventional bucket conveyor, and it is convenient to set up the bottom. Moreover, the screws are located inside the inner cylinder and the cover cylinder, respectively, and the screw at the bottom end of the outer cylinder in particular has a downward pushing action, so unlike an underwater pump, it does not cause agitation in the water. Moreover, the sediment is actively introduced by being pushed downward against the screw, and this, combined with the ease of entering the lower connecting part due to its rotation, reduces the resistance to the screw conveyor inside the inner cylinder.
By fully utilizing this performance, it is expected that the removal efficiency will be improved and a very significant effect will be achieved in discharging sediment from the pond.

Furthermore, the device of the present invention has the effect of increasing the content of solids at the time of removal by conveyance using a screw conveyor, and has great practical utility in simplifying the solid-liquid separation process after discharge. .

The device of the present invention is particularly suitable for treatment and for taking out various substances separated and settled in a sedimentation tank, but it can also be used effectively for taking out solid substances coexisting in other liquids.

[Brief explanation of the drawing]

Figure 1 shows one of the screw conveyor devices of the present invention.
FIG. 2 is a cutaway enlarged view of the main parts showing the main parts by cutting away the lower part of the device, and FIG. 3 is a sectional view taken along the line A--A in FIG. 2. DESCRIPTION OF SYMBOLS 1...Inner tube, 2...Outer tube, 3...Upward transfer screw, 8...Discharge port, 14...Pushing screw, 15...Cover tube, 16...Top opening of cover tube, 17... Communication port.

Claims (1)

[Scope of utility model registration request] An outer cylinder is superimposed on a part of the outer periphery of the inner cylinder, which has a discharge port at the top and has a built-in screw conveyor for upward transfer, and is rotatable relative to the inner cylinder, and the lower end of the outer cylinder A screw to be pushed downward is provided on the outer periphery of the outer cylinder, and a cover cylinder which surrounds the screw and has an opening at the upper part is fixed to and encloses the lower end of the inner cylinder extending downward from the lower end of the outer cylinder. A vertical screw conveyor device, characterized in that a communication port is opened at a lower end portion of the inner cylinder extending downwardly to communicate with the space inside the covered cylinder.