JPH0295794A - Well pump - Google Patents

Abstract

PURPOSE:To aim at simplification in structure and improvement in connection strength and so on by installing a stopper and a flange surrounding this stopper both in one end of a pipe connecting an air separation chamber to a pressure tank, and connecting this flange to the pressure tank. CONSTITUTION:In this well pump, a stopper 2 is attached to one end of a pipe 1 while a flange 3 is installed there so as to surround this stopper 2. This flange 3 is attached to a mounting part 7 of a conduit 6 in a pressure tank 5 with a bolt 8 after its section is formed into a U-shaped form and being inserted together with an O ring 4 from the other end of the pipe 1. Now, when internal pressure in this pressure tank 5 goes up, the pipe 1 tries to slip out of a part of the flange 3. But the stopper abuts on the flange 3, so that this flange 3 is preventable from slipping out of the pipe 1. Therefore such a well pump that is excellent in mounting strength and watertightness is securable in a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a well pump that connects an air separation chamber and a pressure tank with a pipe.

[Prior Art] In a well bonder that connects an air separation chamber and a pressure tank with a pipe, pressure is applied to the pipe from inside the pressure tank, so there is a risk that the pipe may come off unless the connection is made firmly.

For this reason, it has been common practice to provide a flange with a flange at the connecting portion of the pipe, and to connect the pipe with the flange via a backing.

However, such a 7-lunge connection requires either casting the pipe with the flange, or fixing the flange to the end of the pipe by welding, which is cumbersome to process, and When a pipe has flanges at both ends, bolt holes, etc. must be relatively aligned, and a jig is required for welding, which is troublesome.

``Problems to be solved by the invention'' Therefore, attempts have been made to seal the end of the pipe with an O-ring and hold the pipe using the frictional force in order to eliminate the flange connection, but if the pressure is low, the pipe will be held. Sufficient force can be obtained, but when the pressure gets high, the holding force of the O-ring is insufficient, and the pipe may come out due to internal pressure.

This kind of problem arises when one end of a pipe is inserted into an air separation chamber, and because the end of the pipe is inserted a certain length into the air separation chamber due to the separation of air and water, it cannot easily come out. do not have.

However, because the end of the pipe is not fully inserted at the pressure tank side, which is the other end of the pipe, it may come out due to the internal pressure of the pressure tank.

The present invention was made in view of these circumstances, and
The purpose of the present invention is to provide a well bong 1 having a simple structure and configured so that a pipe is not disconnected from the pressure tank side.

[Means for Solving the Problems] The present invention includes a stopper that bulges out in the radial direction at one end of the pipe, a flange that surrounds the stopper, and a flange that connects to the pressure tank side. This solves the problem.

[Function] Since a stopper is provided at one end of the pipe, a flange surrounding this stopper is attached to the pressure tank, so that the stopper hits the 7 lunge and prevents the pipe from coming off the pressure tank, and the O-ring is sufficient to hold it in place. Power is obtained, and a watertight mechanism can be constructed at the connection part.

Since the flange can be inserted and installed from the other end of the pipe, a stopper can be provided on the pipe before installation by welding or the like.

Furthermore, the stopper is provided independently of the action of the O-ring, and comes into contact with the flange to prevent the pipe from coming off.Therefore, there is no need for a backing action surface, and the stopper can be simple and easy to manufacture. good.

[Example] The present invention will be explained based on an example shown in the drawings. Fig. 1 is an enlarged vertical cross-sectional view of a main part of a well pump according to an example of the invention, and Fig. 2 shows the following: FIG. 1 is a perspective view showing an embodiment of a well pump of the present invention.

In FIG. 1, the well pump includes a stopper 2 attached to one end of a pipe 1 by fixing means such as welding, and a flange 3 surrounding the stopper 2.

The flange 3 has a U-shaped cross section, and is inserted together with the O-ring 4 from the other end of the pipe 1, and the water conduit 6 of the pressure tank 5 is attached to the section 7 with bolts 8.

In FIG. 2, the well pump includes a pump section 10 on a base 9, and an air separation chamber 11 above the pump section 10.

A pipe 1 is connected between the air separation chamber 11 and the mounting section 7.
It is bent into an L-shape.

Furthermore, the end portion 12 of the pipe 1 extends long into the air separation chamber 11 and is configured to store priming water inside the air separation chamber 11.

Further, although not shown in the drawings, the pipe 1 and the air separation chamber 11 are fixed in a watertight manner using an O-ring or the like.

In the well pump having such a configuration, when the pump section 10 is operated to pump water, the pumped water is sent to the pressure tank 5 via the pump 1 to increase the internal pressure.

As the internal pressure of the pressure tank 5 increases, pressure is applied to the pipe 1 from inside and it tries to come out at the flange 3, but a stopper is placed at one end of the pipe 1.
is fixed, and this stopper 2 abuts against the flange 3 to prevent the pipe 1 from coming off from the flange 3.

Furthermore, the via 1 may be constructed by bending a commercially available pipe or the like, and the stopper 2 may also be formed by wrapping a member such as a wire and fixing it by welding, making it extremely easy to manufacture.

Furthermore, the pipe 1 only needs to be fitted with the stopper 2 at one end, and the flange 3 and O-ring 4 may be mounted from the other end 12 of the pipe 1.
When attaching the stopper 2 to the pipe 1, it is sufficient to attach the flange 3 to the pipe 1 in advance.

However, since the other end 12 of the pipe 1 is inserted into the air separation chamber 11 for a long time, it does not come out easily. No stopper is required.

[Effects of the Invention] According to the present invention, the pipe is provided with a stopper and covered with a flange, so that the pipe can be securely fixed, has a simple structure, and is extremely easy to manufacture, which has great effects.

[Brief explanation of the drawing]

FIG. 1 is an enlarged longitudinal cross-sectional view of a main part of a well pump according to an embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the well pump of the present invention. 1... Pipe, 2... Stopper, 3... Flange, 4... O-ring, 5... Pressure tank,
10... Pump section, 11... Air separation chamber.

Claims (1)

[Claims] A well pump that connects an air separation chamber and a pressure tank with a pipe is equipped with a stopper that bulges out in the radial direction at one end of the pipe, a flange that surrounds this stopper, and a flange that extends toward the pressure tank. A well pump characterized by being connected.