JPH07229500A - Transferring device and fluid lifting device - Google Patents

Abstract

PURPOSE:To prevent a transfer subject from coming into contact with a movable part as well as to make the transfer distance longer and its extension easy enough by forming such a spiral air current as heading for a discharge port from a suction port. CONSTITUTION:In this ground water lifting device 10, a feed pipe 40 is extended toward a suction port 21 of a pipe 20 in which a ring block 50 is set up, and a branch path 52 being interconnected to this feed pipe 40 is formed in this block 50. Eight air blowoff ports 53 are formed upward aslant from the branch path 52, and when compressed air is blown out therefrom, a spiral air current B is formed toward a discharge port 22, whereby ground water W of the like drawn out of the suction port 21 is made so as to be pumped up to the ground.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device and a fluid pulling device for forming a spiral airflow from a suction port toward a discharge port and transferring an object to be transferred by the spiral airflow.

[0002]

2. Description of the Related Art In excavation work, in order to dig a shaft, it is necessary to remove the groundwater spouting at the bottom of the shaft and the sediment deposited on it. Conventionally, an axial flow pump, a suction pump, etc. have been used for such work.

[0003]

However, if a device such as an axial flow pump in which the earth and sand come into contact with the movable portion is used, the trouble that the earth and sand are caught in the movable portion and the equipment does not work easily occurs. There is a problem.
In addition, when pumping groundwater from a deep vertical hole using a conventional suction pump, the limit of the lift is as low as 15 m, so multiple pumps are used to relay groundwater and sediment at the midway position of the shaft. However, there is a problem that it has to be pulled up to the ground.

In view of the above problems, the object of the present invention is to
An object of the present invention is to provide a transfer device and a fluid pulling device in which the transfer target does not come into contact with the movable part, the transfer distance is long, and the extension is easy.

[0005]

In order to solve the above-mentioned problems, in the transfer device according to the present invention, a swirl airflow is formed from the suction port of the pipeline toward the discharge port, and this swirl airflow causes the swirl air flow from the suction port. When the object to be transferred is sucked and transferred to the discharge port, a pipe line in which the suction port and the discharge port are opened, and a plurality of pipes opened around the suction port in the pipe line toward the discharge port side are provided. The air blowing holes and a compressed air supply source for supplying compressed air to these air blowing holes via an air supply passage are provided.

In the present invention, it is preferable that the air blowing hole is opened with an inclination with respect to the axial direction of the pipe line so that the swirling airflow can be formed with a simple structure.

Further, it is preferable that the air blowing hole is opened at a position inside the conduit from the opening end of the suction port. For example, a ring-shaped block in which an opening forming the suction port is formed is arranged on the suction port side in the pipeline, and this block has an air blowing hole at the end face on the discharge port side. A branch passage is formed to connect these air blowing holes and the air supply passage.

In the present invention, it is preferable that an air intake pipe that communicates with the outside of the pipe line is opened in the pipe line near the opening position of the air blowing hole.

Such a transfer device is suitable for a fluid pulling device such as a submersible pump for pulling a fluid such as water or earth and sand as an object to be transported from the bottom of a vertical shaft. The mouth is located on the lower end side,
The pipe is arranged so that the discharge port is located on the upper end side, and the air supply line is arranged from the compressed air supply source arranged on the discharge port side of this pipe line, that is, on the ground side toward the suction port side. .

[0010]

Embodiments of the present invention will be described with reference to the drawings.

[Embodiment 1] FIG. 1 is a sectional view schematically showing the overall configuration of a groundwater pulling apparatus (fluid pulling apparatus, transfer apparatus) of this example, and FIG. 2 imitates the configuration on the suction port side. FIG. 3 is an explanatory view shown by a formula, and FIG. 3 is a vertical cross-sectional view showing the structure of the suction port by a mimicking formula. In FIG. 1, a groundwater pull-up device 10 of the present example is a device for pumping fluid (transfer target) such as groundwater W springing out from the bottom of a shaft H and sediment S accumulated there to the ground G. The main body is composed of a cylindrical pipe 20 (pipe line) having an inner diameter of 105φ. At the lower end side of the pipe 20, the inner diameter is 83
The φ suction port 21 is open. A discharge port 22 is opened on the upper end side of the pipe 20, and a hose 23 for discharging the pumped-up groundwater W or the like at a predetermined position is connected to the discharge port 22.

In this example, the compressed air supply pump 3 is installed on the ground G.
0 (compressed air supply source) is arranged, and inside the shaft H, the inner diameter is 20φ from the compressed air supply pump 30 along the side surface of the pipe 20 toward the lower end side (the suction port 21 side). An air supply pipe 40 (air supply passage) is arranged.

On the side of the suction port 21 in the pipe 20, a thick ring-shaped block 5 is formed in the center of which a circular opening 51 whose lower end opening should become the suction port 21 is formed.
0 is placed. A branch passage 52 is formed inside the block 50 so as to circulate the opening 51, and the branch passage 52 communicates with the air supply pipe 40. Further, in the block 50, air blowing holes 53 having an inner diameter of about 10φ are arranged at equal intervals in an upward direction from the branch passage 52.
Each of the air blowing holes 53 is open at the upper end surface 55 of the block 50 (the end surface on the discharge port 22 side). Here, the branch path 52 and the air blowing hole 53 of the block 50 are, for example, at the upper end surface of the branch path 52.
A lower block having a groove to form the lower half of
A groove to form the upper half of the branch path 52 is formed on the lower end surface, and the upper block having the air blowing hole 53 formed toward this groove can be formed by a method of overlapping.

In this example, the air blowing hole 53 is inclined at a predetermined angle with respect to the axis L of the pipe 20, as shown in FIGS. Therefore, the compressed air supplied from the compressed air supply pump 30 to the branch passage 52 via the air supply pipe 40 has a direction component having an axial line L and a circumferential direction component from the air blowing hole 53 as shown by an arrow A. Is ejected to the inside of the pipe 20 and the suction port 21
A swirl air flow B is formed from the to the outlet 22.

A method of using the groundwater pulling apparatus 1 thus constructed will be described with reference to FIGS. 1 and 3.

In these figures, at the bottom of the shaft H,
Since the groundwater W and the sediment S that have sprung up during the excavation work are required, it is necessary to pump up the groundwater W and the sediment S with the groundwater lifting device 1 in order to proceed with the excavation work. For that purpose, first, the air supply pipe 40 is connected to the pipe 20, and the compressed air supply pump 30 is operated in this state. Compressed air (indicated by an arrow C) of about 10.5 atm supplied from the compressed air supply pump 30 passes through the air supply pipe 40 and the branch pipe 52 of the block 50, and from each air blowing hole 53 as indicated by an arrow A. As shown, it is blown out along the inner surface of the pipe 20 to form a tornado-like spiral air flow B. Therefore, block 50
The inside (opening 51) is in a negative pressure state.

In this state, the pipe 20 is lowered together with the air supply pipe 40 toward the bottom of the shaft H, and its suction port 2
Soak 1 in groundwater W. As a result, inside the block 50 in the negative pressure state (opening 51), the groundwater W is sucked up from the suction port 21 as indicated by the arrow F, and the groundwater W sucked up is indicated by the arrow D. , Riding on the swirling airflow W and being blown up toward the discharge port 22,
The hose 23 is discharged at a rate of 000 to 2000 liters / minute. Further, the sediment S that has accumulated is sucked up into the pipe 20 through the suction port 21 together with the groundwater W, and is discharged along with the spiral airflow W. After that, the pipe 20 is further lowered toward the bottom of the shaft H together with the air supply pipe 40.

As described above, the groundwater lifting device 1 of this example
At 0, since the groundwater W and the earth and sand S are sucked in and discharged as they are by the swirl airflow B formed inside the pipe 20, there is no movable part where the groundwater W and the earth and sand S come into contact with each other. Therefore, unlike the axial flow pump, the trouble that the soil S or the like is caught in the movable portion does not occur. In addition, the suction port 21
On the side of, the compressed air is blown out from the air blowing hole 53,
The swirl airflow B is formed, and the groundwater W and the earth and sand S are sucked by the swirl airflow B, and the groundwater W and the earth and sand S are put on the swirl airflow B and blown out. Therefore, the groundwater W or the like can be pulled up from the bottom of the deep shaft H by the single groundwater pulling device 1. Further, even if the shaft H becomes deeper, it is sufficient to extend the pipe 20 and the air supply pipe 40, and it is not necessary to lower the pump main body to the bottom of the shaft H, so that it is easy to handle.

Further, in this example, since the air blowing hole 53 is opened at a position slightly inside the pipe 20 from the lower end, a large pulling force can be obtained. The reason is that there is a space corresponding to the opening 51 of the block 50 between the opening position of the air blowing hole 53 and the suction port 21, so that the inside of the block 50 is about to be in a vacuum state from the suction port 21 to the groundwater. It is considered that W is sucked up by a large suction force and guided to the spiral airflow B.
It is also considered that the air blown out from the air blowing holes 53 does not interfere with the flow of the groundwater W sucked up from the suction port 21.

Further, in this example, since the swirling airflow B is formed by inclining the opening direction of the air blowing hole 53, it is not necessary to change the airflow by a guide plate or the like to form the swirling airflow. Therefore, the groundwater pulling device 10 having a high pulling ability can be configured with an extremely simple structure.

[Embodiment 2] FIG. 4 is a longitudinal cross-sectional view showing the construction of the suction port side of the groundwater pulling apparatus (fluid material pulling apparatus, transfer apparatus) of this example in a mimicking manner. In addition, since the basic structure of the groundwater lifting device of this example is the same as that of the groundwater lifting device according to the first embodiment, the corresponding parts are designated by the same reference numerals, and their illustration and description are omitted. .

In the figure, the groundwater pulling apparatus 10 of this embodiment is shown.
a is also a device for pumping to the ground a fluid (transfer target) such as groundwater W springing out from the bottom of the shaft H or sediment S deposited there, and the lower end of the pipe 20 having an inner diameter of 105φ A suction port 21 having an inner diameter of 83φ is opened on the side, and a discharge port 22 is opened on the upper end side.

On the suction port 21 side of the pipe 20, a thick ring-shaped block 50 having an opening 51 formed at the center is arranged. As in the first embodiment, a branch passage 52 is formed inside the block 50 so as to surround the opening 51, and the branch passage 52 communicates with the air supply pipe 40. Further, in the block 50, eight air blowing holes 53 are formed upward from the branch passage 52 in an oblique direction with respect to the axis L of the pipe 20,
Each of the air blowing holes 53 is open at the upper end surface 55 of the block 50 (the end surface on the side of the discharge port 22).

In this example, on the suction port 21 side,
A tip opening of an air intake pipe 70 is located inside the block 50. The air intake pipe 70 is arranged along the air supply pipe 40 to the ground G and is open in the ground G.

The groundwater pulling apparatus 10 thus constructed
The process of pumping up the groundwater W and the sediment S that have springed up at the bottom of the shaft H will be described using a.

First, the air supply pipe 40 is connected to the pipe 20,
When the compressed air supply pump 30 is operated in this state, the compressed air of about 10.5 atmospheric pressure (indicated by the arrow C) supplied from the compressed air supply pump 30 passes through the air supply pipe 40 and the branch pipe 52, From each air outlet 53, arrow A
As shown by (3), it is jetted along the inner surface of the pipe 20 to form a tornado-like spiral air flow B. Therefore, block 5
The inside of 0 (opening 51) is in a negative pressure state.

In this state, the pipe 20 is lowered together with the air supply pipe 40 and the air intake pipe 70 toward the bottom of the shaft H, and the suction port 21 thereof is immersed in the groundwater W. As a result, the inside of the block 50 (opening 5
In 1), the groundwater W is sucked up together with the earth and sand S from the suction port 21, and the groundwater W and the earth and sand S which are sucked up.
Are discharged on the spiral air flow W.

Further, in the vicinity of the opening position of the blow-out port 53, the air sucked on the ground G is supplied from the air intake pipe 70 as indicated by an arrow E, so that the vacuum degree inside the block 50 becomes too high. It prevents the formation of the swirling airflow B from being hindered and compensates for the shortage of the amount of air ejected from the air blowing holes 53. Therefore, in the groundwater pull-up device 10a of this example, in addition to the effect obtained in the first embodiment, the swirling airflow B is more easily formed, and the pulling efficiency of the groundwater W is enhanced.

In this example, the block 50 (pipe 2
Although the lower end surface of 0) has been described as having a flat lower end surface, as shown by the dotted line 80 in FIG. 4, by forming a notch groove or the like in the lower end surface, the lower end surface of the pipe 20 becomes a vertical shaft H. The groundwater W may be sucked through the cutout groove even when the groundwater W is attached to the bottom surface.

Further, in the present example and the first embodiment, the air supply pipe 4
0 and the pipe 20 have been described as having separate structures connected to each other. However, the structure is not limited to this, and a structure in which the air supply pipe 40 is fixed to the side surface of the pipe 20 and a double pipe are used. , A pipeline that serves as a route for pulling up groundwater W (pipe 2
0) may be configured by an inner pipe, and the gap between the inner pipe and the outer pipe may be used as an air supply path. In any case, an air blowing hole may be opened around the suction port. Good.

Further, in each of the present embodiment and the first embodiment, the groundwater pulling device has been described as an example, but fluids other than groundwater and earth and sand can be used as objects to be transferred with the same configuration. . In addition, by arranging the devices described in this example and the first embodiment horizontally or diagonally,
It can be applied to the transfer of snowmelt water, the transfer of grains and fresh fish,
There is no limitation on the type of the transfer target as long as it can be regarded as having fluidity as a whole. Even when these objects to be transferred are transferred, the objects to be transferred do not come into contact with the movable part, so that it is possible to obtain an effect that the objects to be transferred are not damaged.

[0032]

As described above, according to the present invention, a swirl airflow is formed from the suction port of the pipeline toward the discharge port, and the swirl airflow sucks the object to be transferred from the suction port and transfers it to the discharge port. The transfer device is characterized in that an air blowing hole is opened around the suction port. Therefore, according to the present invention, since the transfer object such as groundwater or earth and sand does not contact the movable part,
The trouble that the transfer target bites into the movable part does not occur. Further, since the air blowing holes that open around the suction port form a swirling air flow, the suction force and the discharge force are large, so that it is possible to pull groundwater and the like from the bottom of a deep shaft with one device. Further, even if the shaft becomes deeper, it is only necessary to extend the pipeline and the air supply pipe, so that the handling is easy and the cost is low.

[Brief description of drawings]

FIG. 1 is a cross-sectional view schematically showing the overall configuration of a groundwater lifting device according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing the structure on the suction port side of the groundwater lifting device shown in FIG.

FIG. 3 is a vertical cross-sectional view showing the structure of the suction port side of the groundwater lifting device shown in FIG.

FIG. 4 is a vertical cross-sectional view showing the structure of the suction port side of the groundwater lifting device according to the second embodiment of the present invention in a mimicking manner.

[Explanation of symbols]

10, 10a ... Groundwater pulling device (fluid pulling device, transfer device) 20 ... Pipe (pipe line) 21 ... Suction port 22 ... Discharge port 30 ... Compressed air supply pump 40 ...・ Air supply pipe (air supply passage) 51 ... Opening 50 ... Block 52 ... Branch 53 ... Air blowing hole 70 ... Air intake pipe A ... Compression from air blowing hole Air B ... Swirl flow H ... Vertical shaft S ... Sand and sand W ... Groundwater

Claims (6)

[Claims] 1. A transfer device that forms a swirl airflow from a suction port of a pipeline toward a discharge port, and sucks a transfer target from the suction port and transfers it toward the discharge port by the swirl airflow. A plurality of air blowout holes that are open toward the discharge port around the suction port in the pipe line, and a compressed air supply source that supplies compressed air to these air blowout holes through an air supply passage. A transfer device comprising: 2. The transfer device according to claim 1, wherein the air blowing hole is opened with an inclination with respect to the axial direction of the pipe line. 3. The transfer device according to claim 1, wherein the air blowing hole is opened at a position inside the pipe line from an opening end of the suction port. 4. The ring-shaped block according to claim 1 or 2, wherein a ring-shaped block having an opening forming the suction port is arranged on the suction port side in the pipe line. The transfer device is characterized in that the air blowing holes are opened at an end surface on the side of the discharge port, and a branch passage is formed to connect these air blowing holes and the air supply passage. 5. The air intake pipe according to claim 1, wherein an air intake pipe communicating with the outside of the pipe line is opened in the pipe line near an opening position of the air blowing hole. And a transfer device. 6. A fluid pulling device comprising a transporting device as defined in any one of claims 1 to 5, which pulls up fluidized substances such as water and earth and sand as objects to be transported from the bottom of a vertical shaft, etc., The pipe line is arranged so that the suction port is located on the lower end side and the discharge port is located on the upper end side. From the compressed air supply source arranged on the discharge port side of the pipe line, the suction port is arranged. A fluid pulling apparatus characterized in that the air supply passage is arranged toward the side.