JPS58197483A - Automatic operating apparatus for pump - Google Patents

Abstract

PURPOSE:To permit automatic start and stop of a pump by turning ON/OFF a lead switch in the upper part in accordance with the ascent and descent of a float due to the water-stream pushing-up force and a lever which is moved following a diaphragm which performs displacement by a pressure. CONSTITUTION:When the speed of a water-stream becomes below a set value, a float 3 sinks along a float guide 4 by the selfweight, and is seated onto a flow hole part 1a, and a lead switch 2 operated by said float 3 is turned OFF and a pump 14 stops operation. When the water pressure reduces in this state, a diaphragm 6 performs displacement and pushes-up the float 3 through a lever 10, and the original state of a pump as shown in Fig. A is formed. Thus, the float 3 is operated by a lever 10 which moves following the diaphragm 6 which performs displacement by the pressure from the side and is opevated by the water- stream pushing-up force, and then the lead switch 2 in the upper part is opened and closed, and automatic start and stop of the pump is permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic operation device for a pump in which a float-type flow switch is used to start and stop the pump. The stop is related to the automatic operation device of the pump which also serves as pressure detection at the white point Φ of the foot.

Conventionally, a commonly used automatic pump operation device that enables continuous operation even when the water faucet is turned off has been equipped with separate pressure switches and flow rate switches to supply a constant amount of water at a constant pumping force. When connected in parallel, the pressure switch starts pump operation when the water pressure is low, the flow switch detects the water flow generated by pump operation, and even if the pressure becomes high and the pressure switch is 0FFL, the flow switch is set to OFF. The pump continues to operate until the specified value is reached, supplying water at a constant water pressure.

However, in this case, the pressure switch and the 11m1 switch must be installed separately, resulting in a complicated structure and increased costs.

In view of the above circumstances, the present invention provides a pump automatic operation device with a simple configuration.

That is, in the present invention, a diaphragm that is displaced by pressure is provided in the flow rate switch, and when the pressure is below a certain level, the displacement of the die 17 shim is expanded by a lever to push up the foot in the switch and release the reed switch. This is an automatic operation device for a flow rate switch type pump that has a configuration that does not affect the float even if the diaphragm moves in the opposite direction due to high pressure.

Hereinafter, the present invention will be explained with reference to drawings of embodiments as follows.

Reference numeral 1 denotes a flow rate switch body with a reed switch 2 on the upper part.A float 3 is placed in a part of the center of the flow rate switch body 1 and is positioned below the reed switch 2 with a slot guide 4. The reed switch 2 is actuated in the vicinity of the magnet 5 provided in the holder.

6 is a diaphragm C with a spring 7 for setting a constant pressure installed on the back of the flow path of the flow switch body 1, and the end of the pivot 8 protruding inside the diaphragm 6 is connected to the base end. At the base of the hook-shaped lever 10 pivoted to the side of the C flow switch main body 1 that supports the bottle 9,
The tip pressing portion 10a of the lever 10 is rotated so as to face the one 1τ surface of the float 3 through the communication hole portion 1a, and the automatic operation device 11 is formed as a whole. The electric circuit in this case is as shown in FIG. 3, when the reed switch 2 is activated, the relay coil 12 is energized, the relay 13 is activated, and the pump 14 is operated.

To explain this function, first, when starting the pump 14, when the water pressure drops below the set pressure as shown in FIG. The attached pivot 8 magnifies and transmits the displacement of the diaphragm 6 to the lever 10, and the lever 10 is rotated about the support bin 9 as a fulcrum, pushing up the float 3 with its tip pushing part 10a, and pushing up the float 3. The reed switch 2 is turned on by the built-in magnet 3, and the pump 14 is operated.

Here, the direction in which the diaphragm 6 compresses the spring 7 when the water pressure increases by tightening the faucet (
The pivot 8 attached to the diaphragm 6 separates from the lever 10, and the lever 10 hangs down due to its own weight, causing the tip pushing part 10a to separate from the float 3. In this case, the float 3 In order to maintain the so-called floating state of being pushed up by the flow of the high-pressure water flow itself, the magnet 1-5 of the float 3 is actuated and the reed switch 2 is activated.
remains in the ON state, and the pump 14 also continues to operate (see FIG. 4(B)).

If the faucet is further closed and the water flow is below the set flow rate, the float 3 will sink along the float guide 4 due to its own weight, as shown in FIG. , the reed switch 2 operated at the foot 1-3 is turned off and the pump 14 is stopped.

Next, when the water pressure decreases in this state, the die 17 flamm 6 displaces again and pushes down the no. 1-13 via the lever 10, returning to the pump starting state shown in FIG. It is something.

[As mentioned above, the pump automatic operation device of the present invention is)
The float of the water flow rate switch is placed on the side, and the lever driven by the diaphragm that is displaced by the JIf force and the dosing of the water flow are operated by the force, and the reed switch at the top is turned on and off as the float moves up and down. Due to the structure of the pump, the pump can be started and stopped automatically. However, in this case, the diaphragm part is built into the side of the flow path of the flow switch main body, so the structure is not only simplified, but also the main body as a whole becomes compact and can be provided at low cost. Further, since the displacement of the diaphragm is transmitted to the float in an enlarged manner using a lever, the float and the diaphragm themselves can be used for a long time without causing malfunction or failure.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention on a smaller scale; FIG. 1 is a vertical sectional side view of the main part, FIG. 2 is a front view of the same, FIG. 3 is an electric circuit diagram, and FIG.
Figures (A>(B) and (C) are explanatory diagrams of the operating state. 1...Flow switch main body, 2...Reed switch,
3...Float, 5...Magnet, 6...Diaphragm, 7...Spring, 1o...Lever, 1
4...Pump. Patent Applicant: Sanyo Electric Co., Ltd. Director: Saginomiya Seisakusho Co., Ltd., Mr. Himomata Yukihito
Shigeru look sideways
Tomonosuke Araki Figure 3 No. 4 (A) Figure 4 (B) ■' Figure 4 (C)

Claims (1)

[Claims] 1. At the top of the reed switch that controls pump operation,
A diaphragm that is displaced by pressure is provided on the side of the flow rate switch body, which has a float with a magnet at the bottom that operates the reed switch. An automatic operation device for a pump that is characterized by pushing the lever up when the pressure is below a certain level, and pushing it up with a water flow when the pressure is above a certain level.