JPH08121343A - Deep well pump device - Google Patents

Abstract

PURPOSE: To provide a deep well pump device which is constituted to reduce size, ensure safety, and reduce a processing cost. CONSTITUTION: A pressure regulating device 20 and an automatic air supply device 30 are horizontally attached on a mounting surface 6a formed in a vertical surface to the side of a casing 6. Height is reduced and overflow water is prevented from entering a drive electric motor. Further, a machining work and an assembly work are facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deep well pump device which is a combination of a rotary pump and a jet pump.

[0002]

2. Description of the Related Art A pumping device for a deep well, which is constructed by combining a rotary pump and a jet pump, supplies pressurized water pressurized by the rotary pump to a jet pump installed at the end of a water absorption pipe to pump up and suck up water. Is pressurized, stored in a pressure tank, and supplied to the faucet. The rotary pump is equipped with a pressure adjusting device for adjusting the water pressure and an automatic air supply device for supplying air into the pressure tank.

FIG. 8 shows a pump body mainly composed of a rotary pump in such a conventional deep well pump device. The rotary pump 51 is fixed on the pressure tank 52, the pressure adjusting device 53 is vertically mounted on the upper horizontal mounting surface 54a of the casing 54, and the automatic air supply device 55 is mounted on the casing 54. It is attached to a vertical attachment surface 54b on the side surface in the horizontal direction, and is covered by a pump cover 56.

A deep well pump device of this type, in which a pressure adjusting device is attached in a vertical direction, is disclosed in
No. 8-45993, Japanese Utility Model Laid-Open No. 58-118292, Japanese Utility Model Laid-Open No. 59-107093 and the like.

[0005]

In the conventional deep well pump device described above, the pressure adjusting device 53 projects from the upper portion of the casing 54 with the axis of the adjusting screw oriented vertically. The pump cover 56 for covering the pump is tall and large, and the dead space 56a in the pump cover 56 is large, which is uneconomical.

Moreover, when the pressure adjusting device 53 is removed from the casing 54 for maintenance, the mounting surface opens horizontally, so that water remaining inside the casing 54 overflows in all directions. There is a risk that it will flow down and enter the drive motor, resulting in electrical leakage.

Further, the casing 54 is manufactured by machining a casting, but the horizontal pressure adjusting device mounting surface 54a and the vertical automatic air supply device mounting surface 54b are machined differently in different machining directions, so they are different. However, there is a problem that the processing cost becomes high. Also, the assembly direction is different, so the work is troublesome.

An object of the present invention is to provide a deep well pump device which is small in size, safe, and capable of reducing processing costs.

[0009]

SUMMARY OF THE INVENTION The present invention is directed to an impeller enclosed in a casing and directly connected to an electric motor, and a plurality of guide vanes for converting velocity energy of water pumped by the impeller into pressure energy. With a rotary vane with a built-in guide vane, and a pressure adjusting device attached to the casing to adjust the pressure water pressure to be returned as pressure water to the jet pump used in combination, and air is replenished to the pressure tank. In order to achieve this, in a deep well pumping device equipped with an automatic air supply device attached to the casing and a pump cover attached to the pressure tank and covering them, the mounting surface of the pressure adjusting device is attached to the casing. It is positioned vertically on the upper side of the single side, and the pressure adjustment device is mounted on this mounting surface with the adjustment axis centered horizontally and at a right angle to the motor axis. With attached so that the direction, the mounting surface of the automatic air supply device is also characterized in that formed on the mounting surface in the same direction of the pressure adjusting device.

[0010]

The pressure adjusting device mounted on the mounting surface formed perpendicularly to the casing so that its adjusting axis is in the horizontal direction does not project largely above the casing, so the pump cover Can be made smaller.

Further, since the water flowing out when the pressure adjusting device is removed from the mounting surface formed perpendicularly to the side surface of the casing flows down the side surface of the casing with directionality, it is possible to prevent the water from entering the drive motor.

The mounting surface of the pressure adjusting device and the mounting surface of the automatic air supply device formed on the same space plane facilitate machining.

[0013]

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

The overall structure will be described with reference to FIGS. The pump body 1 has a bolt 3 on the pressure tank 2.
And a rotary pump 5 that is driven by a drive motor 4.

In this rotary pump 5, a guide vane 8 is fixed with a bolt 7 to a casing 6 fixed to the pressure tank 2 with a bolt 3 to cover an impeller 9. This guide vane 8
Has a plurality of guide plates that convert velocity energy of water pumped by the impeller 9 into pressure energy to improve pump pumping performance. The impeller 9 is connected to a rotary shaft 4 a of the drive motor 4 which is surrounded by a mechanical seal 10 and penetrates the casing 6. The casing cover 11 is fixed to the casing 6 with bolts 12 to form a pressure chamber 13 that encloses the guide plate outside the guide vane 8 and communicates with the suction side at the center of the impeller 9. The water absorption pipe connection port 11a is formed, and the pressure water pipe connection port 11b communicating with the pressure chamber 13 is formed.

The jet pump 40 used in combination with the pump body 1 includes a water suction pipe 14 and a pressure water pipe connection port 11 connected to the water suction pipe connection port 11a.
It is connected to the tip of the pressure water pipe 18 connected to b.

The pressure adjusting device 20 for adjusting the water pressure in the pressure chamber 13 has an adjusting axis centered horizontally on an attachment surface 6a formed vertically above the side surface of the casing 6 and an axis center of the drive motor 4. An automatic air replenishing device 30 for replenishing air to the pressure tank 2 is also installed in a direction perpendicular to the direction, and extends in the same space plane as the pressure adjusting device mounting surface 6a perpendicularly to the side surface of the casing 6. It is mounted on the mounting surface 6b formed as described above in the horizontal direction and in the direction perpendicular to the axis of the drive motor 4.

These are covered with a pump cover 15 attached to the pressure tank 2,
A faucet 16 is connected to the.

Next, the structure and mounting structure of the pressure adjusting device 20 and the automatic air supply device 30 will be described with reference to FIGS. 6 is a sectional view taken along the line PP of FIG. 1, and FIG. 7 is a sectional view taken along the line QQ of FIG.

The casing inner water channel 1 communicating with the pressure chamber 13
Casing external water passage 17 communicating with the pressure tank 2 from 7a
The valve 21 of the pressure adjusting device 20 that adjusts the water pressure of the pressure chamber 13 by changing the cross-sectional area of the water passage between b has a spring 22 and a spring seat 23 that surrounds the spring 22 and protects the valve 21. are doing.

The pressure adjusting device mounting surface 6a is formed vertically on the upper side surface of the casing 6, and is fixed to the pressure adjusting device mounting surface 6a with a bolt 24 to mount the valve 21 in a sandwiched state. Is equipped with an adjusting screw 26 for adjusting the spring force of the spring 22 by being screwed into a threaded portion formed at the center thereof. The direction of the adjustment axis moving forward and backward by rotating the adjustment screw 26 is horizontal and perpendicular to the axis of the drive motor 4. A valve seat 27 that protects the valve 21 is provided on the valve contact surface of the casing inner water passage 17a.

In the automatic air supply device 30, the bolt 3 is installed in the same direction as the pressure adjusting device 20 on the mounting surface 6b on the same space plane where the pressure adjusting device mounting surface 6a is extended.
It is attached by 1 and communicates with the casing external water passage 17b. Here, the pressure adjusting device mounting surface 6a and the automatic air supply device mounting surface 6b are formed in a continuous state,
These do not necessarily have to be formed in a continuous state.

This deep well pump device includes a drive motor 4
When the impeller 9 is rotated by, the water in the central portion of the impeller 9 is discharged into the pressure chamber 13 by the centrifugal force, so that the inside of the water absorption pipe connection port 11a becomes a negative pressure and the water absorption pipe 1
4 Suck up the water inside. The velocity energy of the discharged water is converted into pressure energy by the guide plate of the guide vane 8 to increase the pressure in the pressure chamber 13. A part of the increased pressure water is sent from the pressure water pipe 18 to the jet pump 40 to operate the jet pump 40 to assist the pumping.

Further, the water pressure-increased in the pressure chamber 13 pushes the valve 21 of the pressure adjusting device 20 to reduce and move the spring 22 to move the water in the casing 17a between the valve 21 and the valve seat 27. And a casing external water passage 17b are formed to form a gap, and pressurized water is sent to the pressure tank 2 through the casing external water passage 17b.

On the other hand, the automatic air replenishing device 30 sends the replenishing air to the casing external water passage 17b in response to the change in the negative pressure inside the water suction pipe connection port 11a when the rotary pump 5 is operated and stopped.

In such a deep well pump device, the pressure adjusting device 20 is installed with the center of the adjusting shaft oriented horizontally and at a right angle to the axis of the drive motor 4. The adjusting device 20 does not protrude from the upper part of the casing 6, the length of the pump cover 15 is correspondingly shortened, and the internal dead space can be reduced to achieve miniaturization.

Further, the mounting surface 6 of the pressure adjusting device 20
Since a is located on the side surface of the casing 6, the water flowing out from the opening when the pressure adjusting device 20 is removed from the mounting surface 6a will travel down the side surface of the casing 6 and flow down to the lower side. There is also no risk of leaking into the electric motor 4 to cause electric leakage.

The mounting surface 6a of the pressure adjusting device 20
By making the surface flush with the mounting surface 6b of the automatic air supply device 30, machining can be performed in the same machining process. Further, since the mounting work can be performed from the same direction, the assembling work becomes easy.

[0029]

According to the present invention, since the pressure adjusting device horizontally mounted on the mounting surface formed perpendicularly to the casing does not significantly protrude above the casing, the pump cover is not provided. The dead space inside the pump cover can be reduced by shortening the length of the pump. Further, since water flowing out when the pressure adjusting device is removed from the mounting surface formed perpendicularly to the side surface of the casing flows down the side surface of the casing in a directional manner, it is possible to prevent the water from entering the drive motor and leaking electricity.

The mounting surface of the pressure adjusting device and the mounting surface of the automatic air supply device which are formed on the same space plane facilitate machining and assembling work.

[Brief description of drawings]

FIG. 1 is a partially longitudinal front view of a pump body in a deep well pump device according to an embodiment of the present invention.

FIG. 2 is a partially longitudinal side view of FIG.

FIG. 3 is an external view showing the entire deep well pump device according to the present invention.

FIG. 4 is a side view showing a state in which a pump cover of a pump body in the deep well pump device according to the present invention is sectioned.

FIG. 5 is a vertical sectional view of a casing external water passage of the rotary pump in the deep well pump device according to the present invention.

6 is a sectional view taken along line P-P in FIG.

7 is a sectional view taken along line QQ of FIG.

FIG. 8 is a side view showing a state in which a pump cover of a pump body in a conventional deep well pump device is cross-sectioned.

[Explanation of symbols]

 1 Pump Main Body 2 Pressure Tank 5 Rotary Pump 6 Casing 6a Pressure Adjustment Device Attachment Surface 6b Automatic Air Supply Device Attachment Surface 9 Impeller 20 Pressure Adjustment Device 30 Automatic Air Supply Device

Claims (2)

[Claims] 1. A built-in guide vane having an impeller enclosed in a casing and directly connected to an electric motor, and a plurality of guide vanes for converting velocity energy of water pumped by the impeller into pressure energy. Rotary pump,
A pressure adjusting device attached to the casing for adjusting the pressure water pressure returned as pressure water to the jet pump used in combination, and an automatic air attached to the casing for supplying air to the pressure tank. Replenishment device,
In a deep well pumping device having a pump cover attached to and covering the pressure tank, a mounting surface of the pressure adjusting device is positioned vertically above the casing side surface, and a pressure is applied to the mounting surface. The adjusting device is mounted so that its adjusting axis is horizontal and perpendicular to the motor axis, and the mounting surface of the automatic air supply device is also formed in the same direction as the mounting surface of the pressure adjusting device. Pump device for deep wells. 2. The pump device for a deep well according to claim 1, wherein the mounting surface of the pressure adjusting device and the mounting surface of the automatic air supply device are formed on the same space plane.