JPH02157331A - Pressure discharging device of earth and sand - Google Patents

Abstract

PURPOSE:To make it possible to pressure discharge over a long distance with a compact equipment and a small drive source by installing a means to transfer earth and sand to a pressure discharge pump side while agitating, and forming a pressurized air discharging port in a pressure discharge pipe connected through a check valve. CONSTITUTION:A vibration screen 3 is arranged on top of a hopper 2 to eliminate obstacles H, at an end of which an opening 4 is formed to drop obstacles while at its bottom a shoot is formed to receive earth and sand. Next, an agitator 8 is arranged below the hopper 2, beneath of which a screw feeder 9 is installed to transfer earth and sand S, and in the upper part of its edge on the delivery side, obstacle removing rollers 10 are installed. A pressure vane- wheel 12 is installed as the pressure discharging pump of earth and sand S, its discharge port is connected to a pressure discharge pipe 1 through a check valve 17, and a pressurized air discharging port 18 is formed on the pipe 1 in the direction of pressure discharge of earth and sand. This makes it possible to remove obstacles from dredged earth and sand S, agitate and liquidize earth and sand for continuous pressure discharge.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an earth and sand pumping device used mainly to pump earth and sand dredged by a backhoe, grab bucket, etc. to a landfill site, earth disposal site, etc. It is.

[Conventional technology]

Conventionally, in order to forcefully transport dredged earth and sand to a designated location using a backhoe, grab bucket, etc., wires, lobes, sleepers, stones, and other obstacles contained in the dredged earth and sand are removed using a screen, etc., and then the soil is kneaded. The earth and sand were kneaded in a device to fluidize it, and then transported to a batch-type or other type of pressure-feeding tank for pressure-feeding.

Therefore, in the conventional soil pumping method, separate obstruction removal devices such as screens, kneading devices, and pressure feeding devices such as multiple pressure tanks are required, and each of these devices is usually placed on a barge. Therefore, a very large barge is required.

In addition, since the above-mentioned pressure-feeding tanks are not operated continuously but in batch operation, at least two times, such as while one pressure-feeding tank is pumping earth and sand, the earth and sand are transported into another pressure-feeding tank. The base will be needed.

Therefore, equipment for pumping the earth and sand is seriously damaged, and when dredging rivers, lakes, and marshes, a problem arises in that barges carrying these equipment cannot be placed in some locations.

In particular, in order to pump dredged earth and sand over long distances using pressure pipes, the scale of each device becomes large, and the driving source also increases. Another problem is that there is a limit to the distance over which the earth and sand can be pumped.

(Problems to be Solved by the Invention) The present invention has been made in order to solve the above-mentioned conventional problems, and provides a pumping device that can pump earth and sand over a long pumping distance with compact equipment and a small drive source. The objective is to provide the following.

[Means to solve the problem]

As a means for solving the above-mentioned problems, the earth and sand pumping device of the present invention includes an agitator that transports the earth and sand from the lower part of the hopper that receives the earth and sand thrown in by dredging etc. to the earth and sand pump side while stirring the earth and sand. A stirring/conveying means separate from or integrated with a screw feeder, etc. is provided, and pressure is applied in the direction of the pumping of the earth and sand in the pumping pipe connected to the discharge port of the sand pump through a check valve. In addition to providing an air outlet, for example, a vibrating screen and/or an obstacle removal roller are provided as a means for removing obstacles in the earth and sand during the process from the hopper to the earth and sand pump. It is constituted by setting.

In the earth and sand pumping device having the above configuration, dredged earth and sand can be continuously pumped from the hopper while being fluidized by the stirring and conveying means via the pumping pipe. Since a check valve is used in the pump, the pressurized air does not flow back toward the pump for pumping the earth and sand, and the pressurized air eliminates the frictional resistance on the inner wall of the pumping pipe, making it possible to pump earth and sand over long distances. become.

〔Example〕

The present invention will be described in detail below with reference to the drawings. FIG. 1 is a partial cross-sectional arrangement side view of an earth and sand pumping device according to an embodiment of the present invention, and FIG. FIG. 2 is a front view of main parts in one direction.

First of all, this pumping device consists of a barge 2, which is not shown in its entirety.
0, and is used to forcefully transport earth and sand S dredged by a backhoe, grab bucket, etc. (not shown) to a predetermined location such as an earth and sand disposal site in the direction of arrow S through a pressure pipe 1. .

Therefore, at the top of hopper 2, which receives the dredged earth and sand,
A vibrating screen 3 is provided as a means for removing obstacles H such as wires, ropes, sleepers, stones, etc. in the earth and sand S, and an opening 4 is provided in the hopper 2 on the end side of the vibrating screen 3 for the obstacles H to fall. A chute 5 is provided at the lower end of the vibrating screen 3 to receive the soil S and drop it below the hopper 2.

In addition, the reference numeral 6 in FIG. 1 is a drive motor for the vibrating screen 3.

Next, as shown in FIGS. 1 and 2, an agitator 8 rotated by a hydraulic motor 7 is arranged at the bottom of the hopper 2, and further below there are screw feeders 9 on the left and right sides for conveying the earth and sand S in the direction of the arrow T. They are arranged in two sets and are rotated by a hydraulic motor 13.

Further, an obstacle removing roller 10 having a spiral protrusion or groove that rotates at high speed is provided above the discharge side end of the screw feeder 9 as another means for removing obstacles H in the earth and sand S. The obstacle removing roller 10
A spiral pressurizing impeller 12 rotated by a motor 11 is provided above as a pump for pressurizing the earth and sand S.

The obstacle removing rollers 10 are arranged in a plurality of rows, and as shown in FIG. 3 showing the direction ■-■ in FIG. Only the earth and sand S is sucked into the pressure impeller 12 from the gap between the rollers, and obstacles H such as relatively small dust that are not removed by the vibrating screen 3 contained in the earth and sand S are removed by the above-mentioned projections. 10A, the obstacle H moves out of the suction range of the pressure impeller 12 and falls downward, and the obstacle H that accumulates to some extent at the bottom of the gate opening/closing cylinder 1
It is designed to be carried out by opening a lid 15 which is opened and closed appropriately at step 4.

Next, a pressure feed pipe 1 is connected to the discharge port of the pressure impeller 12 via the check valve 17, and pressurized air A is discharged into the pressure pipe 1 in the direction of pressure shown by the arrow of the earth and sand S. A pressurized air outlet 18 is provided.

To explain the pumping action of the earth and sand S of the earth and sand S pumping device of this embodiment having the above configuration, when the dredged earth and sand S is put into the hopper 2, a relatively large obstacle H is sorted out by the vibrating screen 3. and falls out of the hopper 2 through the opening 4 and is removed.

On the other hand, a portion of the soil S scraped along the inclination of the vibrating screen 3 heads toward the opening 4, but the upper sand S falls downward into the hopper 2 through the chute 5.

The earth and sand S that has fallen in the hopper 2 is agitated and fluidized by the stirrer 8, and sent to the lower part of the pressurizing impeller 12, which is a pump for pumping earth and sand, by the screw feeder 9. The relatively small obstacles H that could not be removed are removed by the obstacle removing roller IO before being sucked into the pressure impeller 12.

Next, the earth and sand S pumped by the pressure wheel 12 is sent from the discharge port of the pressure wheel 12 through the check valve 17 to the pressure pipe 1, where it is discharged from the pressurized air discharge port 18. The mixture is pumped by pressurized air A, and the air is pumped over a long distance to a predetermined location.

In the above embodiment, the vibrating screen 3 and the obstacle removing roller 10 are respectively disposed between the hopper 2 and the pressure impeller 12 as means for removing the obstacles H in the earth and sand S. However, depending on the situation of the obstacle H mixed in, etc., only one of them may be disposed at a desired position, or any obstacle other than the moving screen 3 or the obstacle removing roller 10 in 81. A means for removing the object H may be provided.

In addition, in this embodiment, an agitator 8 and a screw feeder 9 are provided separately as stirring and conveying means for stirring and conveying the earth and sand S from the lower part of the hopper 2 to the pressure impeller 12 side. Depending on the nature, it is also possible to use a continuous mixer that combines both of these in one unit,
Further, instead of the screw feeder 9, a conveying means such as a belt conveyor with an appropriate stirring means may be used.

〔Effect of the invention〕

According to the earth and sand pumping device of the present invention described above, the entire series of equipment is integrated into a very compact device, and within the device, obstacles in the earth and sand are removed, the earth and sand is stirred and fluidized, and the earth and sand are Continuous pressure-feeding becomes possible, the location of the pressure-feeding device can be chosen arbitrarily, and the pressure-feeding device can be placed even in places where large barges cannot be placed, such as in rivers, lakes, and marshes.

In addition, pressurized air is discharged in the direction of the earth and sand pump through the check valve in the pressure feed pipe, so the pressurized air does not flow backwards in the direction of the earth and sand pump. Since the frictional resistance between the inner wall and the earth and sand is reduced, the earth and sand can be pumped over a long distance using a pump with a small capacity, such as a pressure impeller, and can be pumped with a small drive source.

Furthermore, if the inside of the pressure-feeding pipe becomes clogged with earth and sand, the check valve is closed by pressurized air, so only pressurized air is sent into the pressure-feeding pipe, and as a result, the blockage inside the pipe is cleared, allowing smooth pressure-feeding work. It also has the effect of being able to.

[Brief explanation of the drawing]

Fig. 1 is a side view of the arrangement of an embodiment of the earth and sand pumping device of the present invention shown in partial cross section, Fig. 2 is a front view of the main parts shown in right half cross section in the I-1 direction of Fig. 1, and Fig. 3 is ■− in Figure 1.
FIG. 3 is a front view of the main part shown in a left half cross section in the direction (2). ■... Pressure feed pipe, 2... Hopper, 3... Vibrating screen, 8... Stirrer, 9... Screw feeder, 10... Obstacle removal roller, 12... Pressure impeller ,
17... Check valve, 18... Pressurized air discharge port, H...
・Obstacle, S...earth and sand. Procedural amendment! . Display of the case 1986 Patent Application No. 309918 2゜Name of the invention Method for pumping earth and sand and its device 3゜Relationship with the case

Claims (1)

[Claims] A means is provided for transporting the earth and sand from the lower part of the hopper to the earth and sand pump while agitating it, and the earth and sand is conveyed in the direction of the earth and sand into a pressure feeding pipe connected to the discharge port of the earth and sand pressing pump via a check valve. An earth and sand pumping device, which is provided with a pressurized air discharge port directed toward the earth and sand, and is provided with means for removing obstacles in the earth and sand between the hopper and the earth and sand pump.