JPH078588U - Detachable water level detector for submersible pumps - Google Patents

Abstract

(57) [Summary] [Purpose] A submersible system that allows existing non-automatic submersible pumps not equipped with water level detectors to be used automatically and also as normal non-automatic submersible pumps. To provide a removable water level detector for a pump. [Structure] The detection circuit of the electrode type water level detector has an insulating coating 2
The connection wire 3a to the power supply side and the connection wire 3b to the load side from its upper part, the tip parts of the electrode rods 4a and 4b to the lower part, and the upper part. The arm body 6 is used as a mounting portion on the upper surface of the submersible pump, and a through hole 8 communicating with an electric wire outlet formed on the upper surface of the submersible pump is bored in the arm body 6 and fitted with the through hole 8. A brim-shaped packing 12 for closing is attached to the connecting electric wire 3b to the load side.

Description

[Detailed description of the device]

[0001]

[Technical Field of Device]

 The present invention relates to a removable water level detector for a submersible pump.

[0002]

[Prior art and its problems]

 Conventionally, in an automatic submersible pump that drives the pump at a predetermined rise level of the water level, the detection circuit of the water level detector is provided in the motor casing, so it was necessary to design it automatically from the beginning. It is extremely difficult to attach a water level detector to this non-automatic submersible pump and convert it to an automatic type.

[0003]

[The purpose of the device]

 The object of the present invention is to use an existing non-automatic submersible pump without a water level detector as an automatic type, and to use it as a normal non-automatic submersible pump. It is to provide a detachable water level detector.

[0004]

[Constitution of device]

 In the detachable water level detector for a submersible pump according to the present invention, the detection circuit of the electrode type water level detector is embedded in an insulating coating, and the inner surface of the insulating coating serves as a surface facing the outer shell of the submersible pump. None, the arm drawn out from the upper part of the facing surface is not used as a mounting part on the upper surface of the submersible pump, and a through hole communicating with the wire outlet formed on the upper surface of the submersible pump is formed in the arm, and Connect the connection wire to the power supply side and the connection wire to the load side from the upper part of the insulative cover, and the tip of the electrode rod from the lower part of the insulative cover to connect to the load side. The electric wire is inserted through the through hole and the electric wire outlet, the tip of the electric wire is connected to the lead wire of the motor, the insertion portion is closed by a collar-like packing, and the peripheral portion is fixed by a bolting structure. .

[0005]

【Example】

 Hereinafter, description will be given with reference to the drawings of the embodiments.

Reference numeral 1a is an outer shell of the submersible pump, 1b is an upper surface of the submersible pump, 2 is an insulating coating body in which a detection circuit of an electrode type water level detector is embedded, and has impact resistance and elasticity like rubber. The connection electric wire 3a to the power source side and the connection electric wire 3b to the load side are led out from the upper portion, and the tip end portions of the electrode rods 4a and 4b are led out from the lower portion. The inner side surface 5 of the insulating cover 2 serves as a surface facing the submersible pump outer shell 1a, and is bent in a concave shape so as to follow the arc surface of the submersible pump outer shell 1a. Then, the arm body 6 is led out from the upper portion of the facing surface to form a mounting portion for the pump upper surface 1b, and a through hole 8 communicating with the wire outlet 7 formed in the submersible pump upper surface 1b is formed in the arm body 6. Set up. Reference numeral 9 denotes a wave preventing wall attached to surround the electrode rods 4a and 4b in the lower portion of the insulating cover 2. A water passage groove 10 is formed in a portion of the wave preventing wall facing the pump outer body 1a. ing. An insulating coating is applied to the connecting wire 3a to the power source side, and a plug 11 is attached to the leading end of the wire. An insulating coating is also applied to the connecting wire 3b to the load side, and a collar-like packing 12 is attached to the electric wire 3b near the leading end of the wire.

When the non-automatic submersible pump is made automatic, the existing connecting electric wire 3 which is led out from the electric wire outlet 7 of the submersible pump upper surface 1b is removed, and the arm 6 is moved to the submersible pump upper surface 1b. When the contact hole 3 is brought into contact with the through hole 8 to coincide with the wire outlet 7, and the inner surface 5 of the insulating cover 2 is brought into contact with the outer casing 1a of the submersible pump, the connection wire 3b to the load side is reversed. It is folded back in a U shape, and the tip is inserted from the through hole 8 of the arm 6 and the electric wire outlet 7 of the submersible pump upper surface 1b to connect with the lead wire 13 of the motor, and the insertion portion is closed by the collar-shaped packing 12. The pressing plate 14 is brought into contact with the upper surface of the collar-shaped packing 12 and the peripheral portion is fixed by the bolts 15, 15. At this time, a slight gap g is formed between the submersible pump outer body 1a and the wave preventing wall 9, and the electrode rod 4a passes from the gap g through the water passage groove 10 formed on the back side of the wave preventing wall 9. , 4b will be opened to the outer surface.

Then, when the connecting electric wire 3a to the power source side is inserted into the outlet of the power source and the water level in the pump installation tank rises and the electrode rods 4a and 4b come into contact with water, the submersible pump is immediately activated to perform drainage. The submersible pump does not stop immediately even if the water level drops due to drainage and the electrode rods 4a and 4b separate from water. For example, the submersible pump is set to continue operation for about 10 minutes and then stop. The wave preventing wall 9 provided at the lower portion of the insulating cover 2 serves to protect the electrode rods 4a and 4b and also to prevent chattering due to the waviness of the water surface. To restore the original non-automatic submersible pump, the water level detector of the present invention may be removed from the submersible pump upper surface 1b and the original connecting wire 3 may be connected to the motor lead wire 13.

[0009]

[Effect of device]

 According to the present invention, the existing non-automatic submersible pump which is not equipped with a water level detector can be used as an automatic type, and can also be used as a normal non-automatic type. Has the advantage that the conversion can be performed very easily and quickly.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a main part of a water level detecting device of the present invention.

FIG. 2 is an inner side view of the water level detector of the present invention.

FIG. 3 is a plan view of the water level detector of the present invention.

FIG. 4 is a bottom view of the water level detector of the present invention.

5 is a cross-sectional plan view taken along line XX of FIG.

FIG. 6 is a front view of a non-automatic submersible pump to which the water level detector of the present invention is attached.

FIG. 7 is a front view of an automatic submersible pump equipped with the water level detector of the present invention.

FIG. 8 is a plan view of an automatic submersible pump equipped with the water level detector of the present invention.

9 is an enlarged cross-sectional view of the main parts of FIG.

[Explanation of symbols]

 1a Submersible Pump Outer Body 1b Submersible Pump Top Surface 2 Insulating Cover 3a Power Supply Side Connection Wire 3b Load Side Connection Wire 4a Electrode Rod 4b Electrode Rod 5 Inner Side 6 Arm Body 7 Wire Outlet 8 Through Hole 12 Collar-shaped Packing 13 Motor lead wire

Claims (1)

[Scope of utility model registration request] The detection circuit of the electrode type water level detector is embedded in the insulating coating (2), and the inner side surface (5) of the insulating coating (2) serves as a surface facing the outer shell (1a) of the submersible pump. The arm body (6) led out from the upper part of the facing surface is used as a mounting portion to the upper surface (1b) of the submersible pump, and the through hole (8) communicating with the electric wire outlet (7) opened on the upper surface (1b) of the submersible pump. ) Is bored in the arm body (6), and the connecting wire (3a) from the upper part of the insulating cover (2) to the power source side and the connecting wire (3b) to the load side.
Of the electrode rods (4a) and (4b) from the lower part of the insulating cover (2), and the connecting electric wire (3b) to the load side is connected to the through hole (8) and the electric wire. Insert it through the outlet (7) and attach the tip to the motor lead wire (1
3) A removable water level detector for a submersible pump, characterized in that the insertion part is closed by a collar-shaped packing (12) and the peripheral part is fixed by a bolting structure.