JPH0564497U - Automatic / non-automatic conversion type vertical submersible electric pump - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a vertical submersible electric pump that can be replaced automatically or non-automatically at any time by simply replacing the head cover without requiring any modification. [Structure] As a head cover 6 connected to the upper surface of a motor chamber 2 erected on a pump swirl chamber 1, an automatic operation circuit 9 is incorporated, and a clamp structure 10 of a float type water level detecting device is provided on the outer surface of a peripheral wall. It is prepared to be compatible with those that do not have the automatic operation circuit 9 or the clamp structure 10. By connecting one of the head covers to the motor chamber 2, automatic or non-automatic It was configured to be used as a formula pump.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic / non-automatic conversion type vertical submersible electric pump that can be used as an automatic pump that starts and stops the pump at a predetermined water level, and can also be used as a normal non-automatic pump. It is a thing.

[0002]

[Prior Art]

 Generally, the operation control of a submersible electric pump is to drop a single-phase 100V or 200V power supply to a low voltage of 24V or less by a transformer, and open / close this low voltage with a reed switch in a float type water level detection device. The method of controlling the pump motor with a relay is often used.

In the conventional automatic pump, a transformer, a power relay, etc. are attached to a partition cover, and a float type water level detecting device is attached by a clamp structure protruding from the outer wall of the motor chamber. On the other hand, as a matter of course, the non-automatic pump does not have an automatic operation circuit built in, nor is the clamp structure for mounting the float type water level detection device installed outside.

As described above, the automatic submersible pump having the float type water level detection device has been designed to be automatic from the beginning. Not only need to be modified so that they can be attached to the partition cover, but also the outer wall of the motor room must be newly made so that the float type water level detection device can be installed. become. Therefore, it is virtually impossible to attach a water level detection device to a ready-made non-automatic pump and convert it into an automatic pump.

An object of the present invention is to provide a vertical submersible electric pump that can be automatically or non-automatically converted at any time by simply replacing the head cover without any modification.

[0006]

[Device configuration]

 In the vertical submersible electric pump of automatic / non-automatic conversion type according to the present invention, a partition cover is provided above the motor chamber that is erected on the pump swirl chamber, and the lower surface opening of the head cover is formed in the shape of the lower surface opening. In a vertical submersible electric pump that can be assembled by freely connecting the motor chamber and the head cover in a state where they face each other on the partition cover, the head cover can be used as an automatic operation circuit such as a transformer or a power relay. The head cover for the automatic pump, which has the interior of the pump and the clamp structure of the float type water level detection device protruding from the outer surface of the peripheral wall, is compatible with the head cover for the non-automatic pump which does not have the automatic operation circuit inside. It is available, and by connecting either one of the head covers to the motor compartment, an automatic or non-automatic And adapted to be brought used as.

[0007]

【Example】

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

1 is a pump swirl chamber, 2 is a motor chamber that is erected on the pump swirl chamber 1 through an oil chamber 3, 4 is a partition cover that is watertightly fitted on the upper surface of the motor chamber 2, and 5 is It is an embedded screw that is erected on the upper surface of the peripheral wall of the partition cover 4, and its upper conductive portion penetrates a screw through hole 7 that is vertically provided on the outer side of the peripheral wall of the head cover 6 described later, and has a bag at the leading end portion. The nut 8 is formed to be screwed. The head cover 6 is made of synthetic resin and has an opening on the lower surface. With the lower surface opening facing the partition cover 4, for example, the lower surface of the peripheral wall is brought into contact with the upper surface of the peripheral wall of the partition cover 4 in a watertight manner to be embedded. The screw 5 is inserted through the screw through hole 7 and is fastened with a cap nut 8 so as to be separably connected to the motor chamber 2 through the partition cover 4. The head cover 6 is an automatic type. The pump head cover 6a and the non-automatic pump head cover 6b are prepared so as to be compatible with each other. The automatic head cover 6a is equipped with an automatic operation circuit 9 such as a transformer or a power relay in an internal space, and the non-automatic head cover 6b is not equipped with such an automatic operation circuit. On the outer surface of the peripheral wall of the automatic head cover 6a, a clamp structure 10 of a float type water level detecting device (not shown) is provided so as to project. It should be noted that all necessary equipment such as condensers and protectors, whether automatic or non-automatic, are installed in the motor room 2 without being housed in the head cover 6.

When used as an automatic pump, the lower surface opening of the automatic pump head cover 6a faces the partition cover 4, and for example, a connector pin (not shown) on the partition cover 4 and the automatic pump The motor chamber 2 and the head cover 6a are separated from each other by connecting a connector socket (not shown) in the head cover 6a for connection and tightening a cap nut 8 at the tip of the embedded screw 5 penetrating the screw through hole 7. It is watertightly coupled via the partition cover 4. In this way, an automatic vertical submersible electric pump is assembled, but when converting it into a normal non-automatic pump, remove the cap nut 8 from the tip of the embedded bis After separating the connection between the connector pin and the connector socket and removing the automatic pump head cover 6a from the motor chamber 2, the lower surface opening of the non-automatic pump head cover 6b is made to face the partition cover 4. For example, by connecting a connector pin and tightening a cap nut 8 at the tip of the embedded screw 5 penetrating the screw through hole 7, the motor chamber 2 and the head cover 6a are water-tightly coupled to each other, and the non-automatic type is used. This is the vertical submersible electric pump.

[0010]

[Effect of the device]

 The automatic / non-automatic conversion type vertical submersible electric pump of the present invention can be automatically or non-automatically converted at any time by simply replacing the head cover without any other modification. is there.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of essential parts showing a state where a pump of the present invention is assembled as an automatic pump.

FIG. 2 is a vertical cross-sectional side view of essential parts showing a state in which the pump of the present invention is assembled as a non-automatic pump.

FIG. 3 is a vertical cross-sectional side view of essential parts showing a state in which a head cover is removed from above a motor chamber in the pump of the present invention.

FIG. 4 is a vertical sectional side view of a main part of a head cover for an automatic pump in the pump of the present invention.

FIG. 5 is a vertical sectional side view of a main part of a head cover for a non-automatic pump in the pump of the present invention.

[Explanation of symbols]

 1 Pump swirl chamber 2 Motor chamber 4 Partition cover 6 Head cover 6a Automatic pump head cover 6b Non-automatic pump head cover 9 Automatic operation circuit 10 Clamp structure

Claims (1)

[Scope of utility model registration request] A partition cover (4) is provided above the motor chamber (2) which is erected on the pump swirl chamber (1), and the lower surface opening of the head cover (6) formed in the lower surface opening form the partition cover (4). ) In a vertical submersible electric pump that is assembled by splitting a motor chamber (2) and a head cover (6) in a state of being opposed to each other upward, the head cover (6) may be an automatic transformer or power relay. An automatic pump head cover (6a) in which a driving structure (9) is installed inside and a clamp structure (10) of a float type water level detecting device is provided on the outer surface of the peripheral wall, and a non-automatic structure in which these automatic operation circuits are not installed Pump head cover (6
It is prepared to be compatible with b), and it is configured to be used as an automatic or non-automatic pump by connecting one of the head covers to the motor chamber (2). Vertical submersible electric pump with automatic / non-automatic conversion.