JPH0768957B2 - Well pump - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a well pump that can be easily replaced with an existing well pump and that can perform stable automatic operation such as continuous and intermittent operations.

[Prior Art] Well pumps are manufactured by distinguishing between a non-automatic system in which operation is continuous and an automatic system in which intermittent operation is performed by operating a terminal such as a faucet.

In non-automatic operation, since the operation stop is operated by another control device or a manual switch, the motor and the pump are the main constituent functions because they are continuously operated.

On the other hand, if it is automatically operated by operating the faucet of the terminal,
Although the operation is controlled by catching the fluctuation of the water pressure, a large pressure tank holding air is required to stabilize the intermittent motion against the fluctuation of the water pressure.

Therefore, when the automatic well pump is used in the continuous operation as in the non-automatic method, there is a phenomenon in which the air inside the pressure tank is reduced by continuous water flow, and the effective volume of the pressure tank is reduced.

In the case of automatic operation, the pressure tank is automatically replenished with air when it is started or stopped. However, continuous operation reduces the frequency of operation and stop, and increases the water flow rate. The air inside penetrates the water and decreases.

According to the experiment, such a phenomenon is that the air inside the pressure tank is almost eliminated by continuous water flow for one day.

However, in general, most conventional well pumps are of the type that is automatically operated, and the number of non-automatic well pumps used for equipment such as a water flow cooler is relatively small.

Under such circumstances, there was also a reason that a non-automatic well pump should be installed to supply water to a water cooler, but a general automatic well pump was often used.

When an automatic well pump is used where a non-automatic well pump should be used, the pressure in the pressure tank rises and the automatic Since the operation is stopped temporarily, there is an advantage that damage due to overload can be avoided.

However, as described above, since the internal air of the pressure tank is reduced, different drawbacks such as damage to the pressure switch and the like occur.

When using a non-automatic well pump in order to compensate for the drawbacks of using such an automatic well pump, it was necessary to match the load and the output of the well pump so as not to overload.

However, in reality, such adaptation involves difficult calculations, and even if the pressure and water volume required for the load can be calculated or estimated, well pumps that match the pressure and water volume are commercially available. It causes problems such as not being done.

This result occurs because the maximum load of the well pump is determined by the head when the vortex flow type is used and by the water volume when the vortex type is used. It is not easily calculated in consideration of different resistance depending on the piping of, and as a result,
This is because it was decided by experiment.

Considering the current situation, the advantage of avoiding overload operation by adopting an automatic well pump will be safe in construction.

Therefore, it would be desirable to be able to configure an automatic well pump to be used for continuous water operation.

On the other hand, the well pump will need to be replaced because it will reach the end of its service life such as piercing due to rust in the pressure tank after about 10 years of use, but such replacement does not involve changing the piping. It is desirable to complete the connection at the parts of the water absorption flange and the discharge flange. For this reason, there has been a situation in which the conventional structure in which the pressure tank is provided with the water absorption flange and the discharge flange cannot be easily changed.

[Problems to be Solved by the Invention] The present invention has been made in view of such circumstances.
The purpose of the present invention is to obtain a well pump that can be reasonably used without using the above-mentioned obstacles when using an automatic well pump as a non-automatic well pump.

In particular, it is an object of the present invention to obtain a multi-type well pump that can be used under usage conditions in which both automatic and non-automatic systems are used.

[Means for Solving the Problem] The present invention is to mount a pump on a pressure tank, to communicate the pump and the pressure tank, and to provide a first discharge flange between the pump and the pressure tank. The problem is solved by providing the tank with the second discharge flange.

[Operation] The pipe line to which the non-automatic well pump is connected is connected to the first discharge flange, and the pipe line to which the automatic well pump is connected is connected to the second discharge flange.

With such a connection, even if water is continuously passed through the first discharge flange, the water is not sent through the pressure tank but is sent by the pump, which affects the air reduction in the pressure tank. There is no.

Then, even if water is intermittently supplied from the second discharge flange, the operation is controlled as a pump of an automatic motion system, and another automatic air supply device operates to operate the pressure tank and supply air every time it is stopped. It will be.

Therefore, even if both the non-automatic operation method and the automatic operation method are used, the operation is stable.

[Embodiment] The present invention will be described based on the embodiment shown in the drawings. The drawing is a front view of a main part of a well pump according to an embodiment of the present invention.

In the figure, a well pump has a large pressure tank 1 on which a pump 2 is mounted, and a water suction pipe 3 of the pump 2 is connected to a water suction side and communicates with a well (not shown) via a pipe 4.

An air separation chamber 5 is provided on the discharge side of the pump 2, and the air separation chamber 5 and the pressure tank 1 are connected by a communication pipe 6.

The communication pipe 6 is provided with a first discharge flange 7, and a pipe 8 through which water is continuously supplied is connected.

Further, a second discharge flange 9 is provided at the lower part of the pressure tank 1 and is connected to an intermittently used terminal such as a faucet (not shown).

Further, the communication pipe 6 has a water channel 11 extending to the bottom of the pressure tank 1 inside the pressure tank 1, and further includes an automatic air supply device (not shown).
When the pump 2 is operated or stopped, the outside air is automatically sucked and the pressure tank 1 is replenished with air.

Inside the air separation chamber 5, the upper end of the communication pipe 6 extends to near the ceiling, and a cap 12 for pouring water is provided on the ceiling.
Is detachably equipped.

When the pump 2 is operated, the water in the well flows from the water suction pipe 3 as shown by an arrow 13 in the figure and flows into the pressure tank 1. Inside the pressure tank 1, the water 14 is compressed by the air 15 and accumulated. Is configured.

In the well pump having such a configuration, when the pump 2 is operated, the well water enters the pressure tank 1 and compresses the internal air 15 to increase the pressure.

Then, when the pressure reaches a predetermined pressure, the operation of the pump 2 is stopped by a pressure switch (not shown).

Further, at the start of such operation, an automatic air reinforcement device (not shown) sucks in the outside air, and when the operation is stopped, the pressure tank 1
Top up with air.

Pressure tank 1 that compresses and retains air 15 in pressure tank 1
The internal water 14 flows out by air pressure when the faucet or the like communicating with the second discharge flange 9 is opened, and the internal pressure of the pressure tank 1 gradually decreases.

When the pressure drops to a predetermined level, the pressure switch automatically starts the operation.

By starting the operation in this way, air is automatically replenished in the pressure tank 1, and even if water is intermittently discharged from the second discharge flange 9, the air 15 inside the pressure tank 1 does not decrease, Stable automatic operation can be performed.

Further, when water is continuously discharged by providing a terminal such as a water cooling cooler, water continuously discharged through the first discharge flange 7 allows the water continuously passed through the pressure tank 1. The air 15 inside the pressure tank does not decrease because there is no pressure.

Moreover, a control device such as a power switch is not required for continuous water flow, and the automatic operation is performed by using the internal pressure fluctuation of the pressure tank 1 as in the case of passing through the second discharge flange 9 due to the pressure fluctuation of the water flow. It is driven the same as.

Therefore, in the case of continuous water flow, through the first discharge flange 7, in the case of automatic operation by intermittent water flow, by respectively passing water through the second discharge flange 9, continuous water flow is achieved. The internal air of the pressure tank 1 does not decrease and the function of automatic operation is not hindered.

Such a first discharge flange 7 may be provided between the pump 2 and the pressure tank 1, and the same effect can be obtained even if it is provided directly in the air separation chamber 5.

As in the present embodiment, if the first discharge flange 7 is provided at the same horizontal position as the water suction pipe 3, the water suction and discharge pipes 4, 8
Will be provided, which is convenient.

Further, when the pump 2 is provided with a cover, it is convenient that the cover can be configured in a cap shape by setting the first discharge flange 7 at a lower position.

On the other hand, when the first discharge flange is formed in the air separation chamber 5, the communication pipe 6 can be formed of a pipe,
It can be manufactured at low cost.

[Effect of the Invention] According to the present invention, it is possible to operate by using the well pump of the automatic operation system under the condition that the well pump of the non-automatic system should be operated. No need for power switch, convenient operation, same result as using two well pumps with one well pump, and easy replacement with existing well pump. It is possible to obtain remarkable effects such as economical efficiency and convenience.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a well pump according to an embodiment of the present invention. 1 ... Pressure tank, 2 ... Pump, 5 ... Air separation chamber,
6 ... communication pipe, 7 ... first discharge flange, 9 ... second
Discharge flange.

Claims (1)

[Claims] 1. A well pump that is equipped with a pressure tank and is automatically operated when a faucet is opened and closed. The pump is mounted on the pressure tank, the pump and the pressure tank are connected to each other, and the pump is connected between the pump and the pressure tank. A well pump comprising a first discharge flange and the pressure tank having a second discharge flange.