CN209741881U - Pneumatic precipitation device - Google Patents

Abstract

The utility model relates to a pneumatic precipitation device in the precipitation engineering field, including water storage tank (1), groundwater collector (2), outlet pipe (3), gas-supply pipe (4), gas transmission device (5) quintuple, collect groundwater to water storage tank (1) by groundwater collector (2) of embedding in soil, through gas-supply pipe (4) to water storage tank (1) interior input gas, utilize the atmospheric pressure in water storage tank (1) and the atmospheric pressure difference of earth's surface, carry the ponding in water storage tank (1) to the earth's surface and get rid of, reach the precipitation purpose, the utility model discloses an air flow realizes taking out of groundwater and falls, for traditional precipitation device, need not set up precipitation well pipe and pumping device two big key parts, has reduced construction cost by a wide margin, has improved precipitation quality and efficiency.

Description

Pneumatic precipitation device

Technical Field

The utility model relates to a precipitation engineering field in the geotechnical engineering field.

Background

In the underground engineering construction or maintenance engineering, the construction or maintenance of the engineering is facilitated by reducing the underground water level or the confined water head along with the precipitation engineering. For example, in the foundation pit engineering, a precipitation engineering is often followed, and in the anti-floating engineering, the underground water level can be reduced through precipitation so as to reduce buoyancy, and in the leakage stoppage engineering, the water leakage head difference can also be reduced through precipitation. The existing precipitation well generally adopts well pipe precipitation or light well point precipitation, and the structure of the precipitation well generally comprises three parts of a well pipe, a filter screen and a filter material. The well pipe is a tubular structure such as a steel pipe, a cement pipe or a PVC pipe and the like, the side wall of which is provided with an opening and extends to the ground surface; the filter screen is a net structure which prevents the filter material from entering the well pipe at the periphery of the open hole position of the well pipe, and is made of a multipurpose gauze in engineering practice; the filter material is granular permeable material arranged between the filter screen and the soil body, generally medium coarse sand, and also a mixture of medium coarse sand and fine stones. The existing dewatering structure has the defects of large sand consumption, large pore-forming diameter, high production cost, low construction speed, easy occurrence of quality problems such as dead wells and the like, and is always required to be washed by mud in the construction process. The existing precipitation technology needs well pipes, the well pipes are high in construction cost, a waste well is caused by frequent excavation in the excavation process, and in the construction of a foundation bottom plate, the well pipes penetrate through the bottom plate due to continuous precipitation, well sealing treatment is needed, and the cost is high.

Disclosure of Invention

The utility model aims at providing a pneumatic precipitation device, this pneumatic precipitation device can implement the pneumatic precipitation method smoothly, directly passes through the flow of air, reaches soil body precipitation purpose.

The pneumatic water-lowering device comprises five parts, namely a water storage tank, an underground water collector, a water outlet pipe, a gas conveying pipe and a gas conveying device, wherein the water storage tank is a container deeply buried in soil, the underground water collector comprises a water flow channel and a filter membrane, the water flow channel is connected with the water storage tank, the filter membrane is wrapped on the outer side of the water flow channel, the underground water collector is buried in a soil body, the water outlet pipe is connected with the water storage tank, the gas conveying pipe is connected with the water storage tank, and the gas conveying device is a device for inputting or exhausting gas into or out of the water storage tank through the gas conveying.

In the pneumatic precipitation device, a one-way valve for preventing accumulated water or air in the water storage tank from flowing back to the soil can be arranged at the water flow channel or in the water storage tank.

In the pneumatic precipitation device, a control valve can be arranged on the water outlet pipe to control air to flow back to the water storage tank.

The utility model discloses a precipitation device, the density of utilization water is greater than the physics essence of gas density, directly gets rid of the water in the soil through gas flow, and is completely different with traditional precipitation technique, does not need well casing and two big key components of pumping device among the traditional precipitation technique, and the cost is low, and precipitation ability is strong, and the equipment maintenance cost is low, and the operation process safety of drawing water.

Drawings

FIG. 1 is a schematic diagram of a pneumatic precipitation device according to an embodiment of the present invention.

Detailed Description

As an embodiment of the present invention, the precipitation mechanism and the implementation method of the pneumatic precipitation device of the present invention are described in detail with reference to fig. 1. Firstly, the structure and the working mechanism of the pneumatic precipitation device of the invention are described with reference to fig. 1. As shown in figure 1, the pneumatic precipitation device comprises five parts, namely a water storage tank (1), an underground water collector (2), a water outlet pipe (3), a gas conveying pipe (4) and a gas conveying device (5), wherein the water storage tank (1) is a container deeply buried in soil, the underground water collector (2) comprises a water flow channel (8) and a filter membrane (9), the water flow channel (8) is connected with the water storage tank (1), the filter membrane (9) is wrapped on the outer side of the water flow channel (8), the underground water collector (2) is buried in the soil body, the water outlet pipe (3) is connected with the water storage tank (1), the gas conveying pipe (4) is connected with the water storage tank (1), and the gas conveying device (5) is a device for inputting or extracting gas into or out of the water storage tank (1) through the gas conveying pipe (4). As shown in fig. 1, the water outlet pipe (3) is located at the lower part of the water storage tank (1), and the groundwater collector (2) can collect groundwater into the water storage tank (1). Because the density of the gas in the water storage tank (1) is far less than that of the water, no matter how large the air pressure in the water storage tank (1) is, the accumulated water is always positioned at the lower part of the water storage tank (1) in the water storage tank (1), and the gas is always positioned at the upper part of the water storage tank (1). The air transmission device (5) is used for increasing air pressure into the water storage tank (1), when the air pressure in the water storage tank (1) is sufficiently large by subtracting the atmospheric pressure on the ground surface, the accumulated water in the water storage tank (1) can flow out of the ground surface through the water outlet pipe (3), and the purpose of draining is achieved. In the pneumatic precipitation device, a one-way valve (7) for preventing accumulated water or air in the water storage tank (1) from flowing back to the soil can be arranged at the water flow channel (8) or in the water storage tank (1). If the check valve (7) is not arranged, after the air pressure of the water storage tank (1) is increased, gas or water partially flows back to the soil body, but the resistance of the soil body is large, and the water outlet pipe (3) is opened on the ground surface and has small resistance, so that accumulated water in the water storage tank (1) can still be discharged from the ground surface. If a one-way valve (7) is arranged, the precipitation effect is improved by adding a device. In foretell pneumatic precipitation device, can install control valve (6) on foretell outlet pipe (3), control valve (6) are the switch that goes out water, can control the air in water storage tank (1) against the current, and the water storage tank (1) evacuation of being convenient for improves precipitation effect, when evacuation in water storage tank (1), connects gas-supply pipe (4) on the upper portion of water storage tank (1), and it can be better to implement the effect. The following part of this embodiment will be described with reference to fig. 1, which illustrates the implementation steps of the pneumatic precipitation method of the present invention. The pneumatic precipitation method of the utility model comprises the following four steps. In the first step of the embodiment, firstly, a water storage tank (1) with a groundwater collector (2), a gas transmission pipe (4) and a water outlet pipe (3) is placed in soil body below the ground surface, and one end of the water outlet pipe (3) is extended to the ground surface. The embedding method can be that the hole is drilled firstly, then the embedding is carried out, and then the backfilling is carried out. The insert can also be directly pressed or vibrated into the soil. The first step of this embodiment is implemented and the second step is entered. In this step, groundwater is collected into a water storage tank (1) by a groundwater collector (2). The soil body is isolated by utilizing the filter membrane (9) of the underground water collector (2), underground water can automatically flow into the water storage tank (1) under the action of gravity, and negative pressure can be increased in the water storage tank (1) to accelerate the collection of underground water. The second step of this embodiment is completed and the third step is entered. In the step, gas is input into the water storage tank (1) through the gas conveying pipe (4), and the air pressure in the water storage tank (1) is increased. As the volume of the water storage tank (1) is fixed, as long as gas is transmitted into the water storage tank (1), the gas pressure in the water storage tank (1) follows Boyle's law in the three laws of gas, and the gas pressure is increased. Thereby completing the third step of the present embodiment and proceeding to the fourth step. In the step, when the difference value of the atmospheric pressure of the earth surface is subtracted from the air pressure in the water storage tank (1) and is larger than the water head difference between the water surface of the accumulated water in the water storage tank (1) and the water outlet pipe (3) on the earth surface, the accumulated water in the water storage tank (1) is discharged from the pipe orifice on the earth surface through the water outlet pipe (3) under the action of the pressure difference, and therefore the purpose of precipitation is achieved.

This patent includes, but is not limited to, other construction methods that may be substituted by those skilled in the art.

Claims (3)

1. The utility model provides a pneumatic precipitation device, characterized by includes water storage tank (1), groundwater collector (2), outlet pipe (3), gas-supply pipe (4), gas transmission device (5) five parts, wherein water storage tank (1) is the container of burying deeply in soil, groundwater collector (2) include rivers passageway (8) and filter membrane (9) two parts, rivers passageway (8) wherein are connected with water storage tank (1), filter membrane (9) parcel is in the outside of rivers passageway (8), groundwater collector (2) are buried in the soil body, outlet pipe (3) are connected with water storage tank (1), gas-supply pipe (4) are connected with water storage tank (1), gas transmission device (5) are the device of inputing or taking out gas through gas-supply pipe (4) in to water storage tank (1).

2. A pneumatic precipitation device according to claim 1, characterized in that a non-return valve (7) is arranged in the water flow channel (8) or in the water storage tank (1) to prevent the water or gas in the water storage tank (1) from flowing back into the soil.

3. A pneumatic precipitation device according to claim 1, characterized in that a control valve (6) is mounted on said outlet pipe (3).