JP2005226277A - Equipment and method for pulling up accumulated slime - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide equipment for pulling up slime etc. accumulated on the bottom of a well, which enables even the hardened slime to be pulled up in an efficiently crushed manner. <P>SOLUTION: A jet nozzle 2 is provided at the tip of a high-pressure pipe 4 for feeding high-pressure water; a cylindrical net cage 3 with an opened upper end is attached to the tip of the high-pressure pipe 4 in such a manner as to be concentric with the high-pressure pipe 4; and the jet nozzle 2, which is provided at the tip of the high-pressure pipe 4, is provided with a lower jet orifice 8 for emitting a jet of high-pressure water downward, and upper jet orifices 9, 9... for emitting the jet of high-pressure water obliquely upward. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an apparatus and a lifting method for lifting mud, sand, and soil deposited on the bottom of a well or the like.

  There are deep wells in places in the city, but the strainers of these deep well pipes are so fine that foreign matter such as mud, sand, rust, and algae adhere to them, causing clogging. As a result, it is difficult for water to rise, and the function as a deep well is lost. There are relatively few clogged deep wells used every day. For example, in the case of deep wells for snow-melting equipment, mud in the deep well pipe during periods when water is not used, because it is used only during the winter. And other foreign objects will adhere.

  Foreign matter such as adhering mud dries and hardens, causing clogging when used, making it difficult for water to rise. After many years of repeating this, the strainer has been washed when the water pressure has weakened. However, the conventional strainer cleaning method for deep well pipes can be cleaned by inserting a wire brush and moving the wire brush up and down, or by pouring water into the deep well pipe and moving it up and down with a pump. It is moved to and is washed by water pressure.

  However, it is not possible to remove mud and other foreign substances that have penetrated deep into the strainer by simply rubbing the strainer surface with a wire brush or moving the water in the vertical direction. That is, the clogging that has entered the hole of the strainer cannot be sufficiently eliminated. Therefore, a “deep well pipe cleaning method and cleaning apparatus” according to Japanese Patent Laid-Open No. 2002-192094 is known.

  In this method, there is a method in which a cleaning device is connected to the tip of an ultra-high pressure water hose, and the cleaning device is lowered together with the hose to clean the deep well pipe. Ultra high pressure water is injected from the injection nozzle and the injection nozzle rotates with the injection, and the escape plate of the ultra high pressure water is blocked by a shielding plate attached to the upper end of the cleaning device, and the ultra high pressure water hose is inserted. A hole is provided in the center of the shielding plate, and a gap is formed between the hole and the hose, and dirt such as mud and sand passing through the gap and rising with water is deposited on the shielding plate.

On the other hand, not only does the strainer clog in the well, but also mud sand accumulates at the bottom of the well, and the mud sand hardens as time passes, and the volume of the well is gradually reduced and the estimated amount stored is reduced. To do. Therefore, it is necessary to suck up and remove the mud accumulated at the bottom of the well, but an air compressor is used as a device for sucking up the mud from the well bottom. That is, the hose can be inserted into the well bottom, and air can be sent in to suck up mud sand deposited on the bottom together with the well water. However, the suction force of the air compressor is not so great, and the mud sand cannot be sucked up particularly when the mud sand is accumulated and hardened.
"Cleaning method and cleaning device in deep well pipe" according to JP-A-2002-192094

  Thus, there is a problem as described above when sucking up mud sand deposited on the bottom of a well by a conventional air compressor. The problem to be solved by the present invention is this problem, and provides a device and a method for lifting mud sand that can efficiently lift even hard mud sand.

  In the apparatus for pulling up mud sand according to the present invention, a high pressure pipe is connected to a hose extending from a pump car, and a water injection nozzle is provided at the tip of the high pressure pipe. The injection nozzle includes a lower injection port for injecting water downward and an upper injection port for injecting water upward. A cylindrical mesh basket is attached to the high-pressure pipe, and the mesh basket and the high-pressure pipe are concentric, and the top of the mesh basket is open.

  Here, the form of the spray nozzle is not limited, but the downward spray is sprayed with high-pressure water that can break up the mud accumulated on the bottom of the well, and the mud that has been crushed and stirred upward. Is sprayed so that it can be pushed up above the net cage. In this case, the spray nozzle can be configured to be rotatable.

  The apparatus for lifting mud sand according to the present invention is provided with an injection nozzle at the tip of a high-pressure pipe, so that high-pressure water sent from the pump car is injected from the injection nozzle and accumulates and solidifies on the well bottom. It is crushed and is pushed outward and flows upward. And it rises further with the water sprayed from the jet nozzle provided upwards, and the mud that has risen falls from a predetermined height and is accommodated in the net basket.

  Here, the size of the net cage is set to an appropriate outer diameter so that a large space does not remain between the inner peripheral surface of the well and mud sand moves to the bottom of the well due to the flow rising from the bottom. It does not fall again and is accommodated in the net basket. Then, the mud sand is pulled up when it is fully filled in the net cage, and the mud sand is taken out and inserted into the well again to accommodate the mud sand accumulated at the bottom. As described above, the mud sand lifting device of the present invention has a simple structure in which the structure includes the injection nozzle and the net cage is attached, and the mud sand deposited on the bottom of the well by injecting high-pressure water. Can be efficiently recovered and raised.

  FIG. 1 is a schematic view showing a mud sand lifting device according to the present invention, which is a case where it is housed in a well. In the figure, 1 is a pump, 2 is an injection nozzle, 3 is a mesh basket, 4 is a high-pressure pipe, 5 is a high-pressure hose, and 6 is a well. The pump 1 sends high-pressure water to the high-pressure pipe 4 through the high-pressure hose 5, and high-pressure water is injected from the injection nozzle 2 provided at the tip of the high-pressure pipe 4.

  A cylindrical net cage 3 is attached to the lower end of the high-pressure pipe 4, and mud sand is accommodated in the net cage 3 and pulled up. FIG. 2 shows a specific example of the mud sand lifting device of the present invention. A cylindrical net cage 3 is attached to the lower end of the high-pressure pipe 4, the upper end is open, and the lower outer side 7 is shaped like an inverted cone. Inclined. The cylindrical mesh basket 3 is attached concentrically with the high-pressure pipe 4 and is provided with reinforcing rings 10, 10,.

  The injection nozzle 2 provided at the lower end of the high-pressure pipe 4 has a lower injection port 8 and a plurality of upper injection ports 9, 9,..., And high pressure water is supplied from the lower injection port 8 and the upper injection ports 9, 9,. Spray. High pressure water can be jetted downward from the lower jet port 8, and high pressure water can be jetted obliquely upward from the upper jet ports 9, 9. The high-pressure water sprayed obliquely upward does not hit the high-pressure water sprayed onto the net cage 3 because the lower side of the net cage 3 has an inverted conical shape.

  Further, the spray nozzle 2 may be rotatably attached. If the direction in which high-pressure water is injected from the upper injection ports 9, 9... Is obliquely rearward, the injection nozzle 2 can be rotated by the injection reaction force of high-pressure water. In the embodiment, the lower injection port 8 and the upper injection ports 9, 9,... Are provided in one injection nozzle 2, but a lower injection nozzle and an upper injection nozzle can also be provided.

  FIG. 3 shows an example of use of the mud sand lifting device according to the present invention. The mud sand lifting device is lowered to the bottom of the well 6 and high pressure water is sprayed from the spray nozzle 2. The high-pressure water sprayed downward from the lower injection port 8 collides with the hard sedimentary mud sand 11 accumulated at the bottom of the well 6, and the sedimented mud sand 11 moves outward and is pushed upward as indicated by an arrow. It is done.

  And since the high-pressure water is jetted obliquely upward from the upper jet ports 9, 9,... Of the jet nozzle 2, a flow in the direction of the arrow is formed along the inner peripheral surface of the well 6, and mud sand 12 together with the flow , 12 ... will rise. The mud sand 12, 12... Falls when it rises further from the upper end of the net basket 3 and is accommodated in the net basket 3 through the opening 13. When the mud sand 12 is fully filled in the net cage 3, it is pulled up and taken out on the ground.

  The spray nozzle 2 can spray high-pressure water while rotating. For this reason, water containing mud sand rises while rotating in a spiral between the net cage 3 and the inner peripheral surface of the well, and falls from a certain height. And accommodated in the net basket 3. The high-pressure water sprayed by the rotation of the spray nozzle 2 does not hit the same place, and a swirling flow is generated, so that mud sand is more likely to float than a straight rise, and the net cage 3 and the space 14 on the inner peripheral surface of the well 14 Is prevented from falling through. The rising water is filtered by the net cage 3 and the mud sand 12 is filtered, and can flow down through the central shaft portion of the net cage 3.

The whole external appearance figure of the mud sand raising device concerning the present invention. 1 shows an embodiment of a mud sand lifting device according to the present invention. Action of the mud sand lifting device according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pump 2 Injection nozzle 3 Net basket 4 High pressure pipe 5 High pressure hose 6 Well 7 Outer periphery 8 Lower injection port 9 Upper injection port
10 Auxiliary ring
11 sedimentary mud
12 mud sand
13 opening
14 space

Claims (3)

In an apparatus for pulling up mud sand or the like accumulated at the bottom of a well, an injection nozzle is provided at the tip of a high-pressure pipe for sending high-pressure water, and a net-shaped cage having a cylindrical opening at the tip is provided at the high-pressure pipe. The injection nozzle provided at the tip of the high-pressure pipe is provided with a lower injection port for injecting high-pressure water downward and an upper injection port for injecting high-pressure water obliquely upward. Equipment for lifting sedimentary mud sand. The apparatus for lifting sedimentary mud sand according to claim 1, wherein the spray nozzle is rotatably attached to the tip of the high-pressure pipe. In the method of pulling up mud sand etc. accumulated at the bottom of the well, high pressure water is sprayed downward from the jet nozzle at the tip of the high pressure pipe to crush the mud sand deposited at the bottom of the well and stir and raise it. A cylindrical shape in which the mud sand further rises along the inner peripheral surface of the well along with the high-pressure water jetted obliquely upward from the nozzle, and the mud sand that rises and drops to a certain height is attached to the tip of the high-pressure pipe and the upper end is opened. A method for lifting sedimentary mud sand, which is accommodated in a net cage and lifted.