JPS5833195Y2 - Equipment for discharging earth and sand from excavation pipes - Google Patents

Description

[Detailed description of the invention] In the conventional polling device, a rotatable valve is provided on the excavation pipe having a blade for excavation, and the excavated earth and sand is passed through the valve by the impact of the weight of the excavation pipe. Stored inside the excavation pipe,
In other words, the descending special trigger of the excavation pipe opens and collects the earth and sand, and when the excavation pipe rises, the valve is closed due to the start, the earth and sand remain stored in the excavation pipe, and the muddy water inside the excavation pipe is discharged from above. However, the dirt, etc. will remain on the valve, and in order to discharge the dirt, etc. to the outside of the excavation pipe, pull the excavation pipe above the ground, push up the valve from below, and discharge the dirt, etc. to the outside along with the muddy water inside the excavation pipe. The boonong was performed repeatedly, but it required a lot of force and time to perform the push-up.

This invention allows earth and sand in the excavation pipe to be discharged together with the light clay water that is pumped into the excavation part, without requiring much force or much time, using extremely simple commands.

Next, this invention will be explained with reference to its illustrated embodiment.

A blade 2 is attached to the lower part of the excavation pipe 1, an inner pipe 3 whose end is a muddy water outlet 3a is housed in the excavation pipe 1, a valve 5 is attached to the lower part of the excavation pipe 1 by a shaft 4, and a valve 5 is attached from the upper part by a stop 6. It moves upwards, but is prevented from moving downwards.

A hole 7 is provided in the excavation pipe 1 above the valve 5, and a protrusion 9 in the length direction of the excavation pipe 1 is provided in a portion covering the hole 7 and a lid 8 having an opening 8a that matches the hole 7.

Although the lid 8 is illustrated as being rotated, it may also be moved up and down.

Therefore, to open and close the hole 7 above the valve 5 of the excavation pipe 1, the lid 8 is moved by the protrusion 9, and during excavation, the hole 7 is closed on the surface remote from the opening 8a of the lid 8. When the dirt, etc. inside the tube 1 is lifted to the ground, the opening 8a of the lid 3 is moved by the protrusion 9 to match the hole 7, so that the dirt, etc. inside the pipe can be discharged together with the light clay water.

Light clay water prepares the walls of the borehole.

As described above, according to this invention, the polling operation can be carried out more efficiently than the conventional operation, and the earth and sand in the excavation pipe can be discharged together with light clay water without requiring a large amount of force and a lot of time.

[Brief explanation of drawings]

Figures 1 and 2 are a vertical sectional view and a front view of the main parts of the device according to this invention, and Figure 2 shows the lid in Figure 1 with the lid moved. FIG. 3 is a sectional view taken along line 21 III in FIG. 2. 1: Drill pipe, 2: Blade, 3: Inner pipe, 5: Valve, 7: Hole, 8: Lid, 8a: Opening.

Claims (1)

[Scope of utility model registration request] An excavation pipe with a blade that accommodates a pipe inside the pipe is provided with a valve so as to be rotatable, a hole is provided above the valve, and a lid having an overlapping opening is attached to the hole, so that the hole is closed with the lid during excavation. , A device for discharging earth and sand from excavated pipes, which aligns the hole with the opening of the lid and discharges the earth and sand inside the pipe.