JP2544769Y2 - Pumping equipment in the well - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pumping device in a well, and more particularly to a pumping device in a well having a relatively small diameter. 2. Description of the Related Art Conventionally, a horizontal pump installed on the ground is used for pumping water in a well. Even a vertical submersible pump designed to be used submerged in water cannot be submerged in a well whose diameter is smaller than the pump diameter. Further, a normal submersible pump does not function when it is separated from the water surface. Therefore, a ground-mounted horizontal pump is used for pumping water in a small-diameter well. And since it is necessary to install the pump at the installation height that limits the suction lift of the pump, only the upper part in the well is formed with a large diameter to secure the pump installation space, and the horizontal pump is mounted on this large diameter part. Is installed, and the suction pipe is guided below the water surface in the well. [0003] However, the ground-mounted horizontal pump requires a large space for installation, and thus the construction cost is increased. In addition, since the motor of the ground-mounted pump is not moisture-resistant and water-resistant structure, not only does it have a problem with durability in wells with high humidity, but if it becomes submerged when the water in the well rises, it will be immediately unusable. There are drawbacks. If a vertical submersible pump is used, the installation space can be reduced, and it has a moisture-resistant and water-resistant structure.However, as described above, the conventional vertical submersible pump opens the pump suction port directly into the water as described above. It is designed to be used and cannot function when installed at a distance from the surface of the water. The object of the present invention is that the installation space for the pump is small, the construction cost is not increased, the pump in the well is not affected by moisture, and there is no hindrance to the operation of the pump even if it is submerged when the water in the well is increased. There is no pumping equipment to provide. In the well pumping device according to the present invention, the upper part of the well is formed to have a large diameter to secure a space for mounting a vertical self-priming centrifugal pump to be described later. A vertical self-priming centrifugal pump is installed at the installation height that limits the suction lift of the pump in this large diameter part, and the vertical self-priming centrifugal pump has a pump vortex chamber below the submersible motor. The suction pipe is provided by directing the discharge port from the side of the water chamber, providing a water chamber directly below the suction cover, and opening a suction pipe connection port provided with a check valve on the outer wall of the water chamber. A water passage is formed from the connection port to the discharge port through the water chamber and the pump swirl chamber, and the suction pipe connected to the suction pipe connection port is guided into the well and the opening at the tip thereof is below the water surface. Insert into An embodiment will be described below with reference to the drawings. P is a vertical self-priming centrifugal pump used in the pumping device of the present invention, 1 is a submersible motor which is a motor of the vertical self-priming centrifugal pump P, and 2 is a submersible motor through an oil chamber 3. The pump vortex chamber is mounted below, and contains therein an impeller 5 fitted to the tip of the motor shaft 4 and a discharge port 6 is guided upward from the peripheral side. Reference numeral 7 denotes a suction cover having an opening 8, 9 denotes a water chamber provided immediately below the suction cover 7, 10 denotes a suction pipe connection port formed on an outer wall of the water chamber 9, and a check valve therein. A valve 11 is provided. In this way, a water passage from the suction pipe connection port 10 to the discharge port 6 through the water chamber 9 and the pump swirl chamber 3 is formed. Reference numeral 12 denotes a discharge pipe connected to the discharge port 6. Reference numeral 13 denotes a well provided with the vertical self-priming centrifugal pump P. The upper part of the well is formed to have a large diameter to secure an installation space for the vertical self-priming centrifugal pump P. The vertical self-priming centrifugal pump P is installed at the installation height limited to the suction lift of the pump at the portion 13a formed in the vertical direction. Then, a suction pipe 14 is connected to a suction pipe connection port 10 formed on the outer wall of the water chamber 9 of the vertical self-priming centrifugal pump P, and the suction pipe 14 is led down into the well 13. The pumping device according to the present invention is constructed by inserting the pumping device downward. When the vertical self-priming centrifugal pump P is started in this state, water is pumped in the well 13 in the same manner as the ground-mounted self-priming pump. The vertical self-priming pump P installed in the well 13 uses the submersible motor 1 having a moisture-proof and water-resistant structure as a motor, so that the inside of the well 13 is abnormally increased without being affected by the moisture in the well 13. And vertical self-priming pump P
Even when the water level rises to the point where the water is immersed, the water is pumped without any trouble. According to the pumping device of the present invention, since the pump P provided in the well 13 has a vertical configuration, the air discharging efficiency at the time of self-priming is good, the installation space is small, and the construction cost is low. Since the underwater motor 1 is used as a prime mover, the motor is excellent in moisture resistance and water resistance. There is an advantage that pumping is performed without any water.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional side view of a main part of the device of the present invention. FIG. 2 is a vertical sectional side view of a main part of a vertical self-priming centrifugal pump used in the device of the present invention. [Description of Signs] P Vertical self-priming centrifugal pump 1 Submersible motor 2 Pump vortex chamber 6 Discharge port 7 Suction cover 9 Water chamber 10 Suction pipe connection port 11 Check valve 13 Well 13a Large diameter portion 14 Suction tube

Claims (1)

(57) [Claims for registration of utility model] The upper part of the well (13) is formed with a large diameter to secure a mounting space for the vertical self-priming centrifugal pump (P), which will be described later. The vertical self-priming centrifugal pump (P) is installed at the installation height that limits the suction lift of the pump in the section (13a), and the vertical self-priming centrifugal pump (P) is installed.
Is provided with a pump vortex chamber (2) below the underwater motor (1), guides the discharge port (6) from the side thereof, and provides a water chamber (9) immediately below the suction cover (7); By opening a suction pipe connection port (10) provided with a check valve (11) on the outer wall of the water chamber (9), the suction pipe connection port (1) is opened.
0) through the water chamber (9) and the pump swirl chamber (2) to the discharge port (6), and a water passage is formed;
Suction pipe (14) connected to the suction pipe connection port (10)
The water pumping device in the well, characterized in that the water is guided into the well (13) and the opening at the tip is inserted below the water surface.