JPS6343076A - Antifreezing cock control device - Google Patents

Abstract

PURPOSE:To make an antifreezing cock operable even upon power failure, by providing a selector switch adapted to connect a second power source with an actuator to normally operate the actuator when a first power source is broken. CONSTITUTION:An actuator 5 receives a signal from an operating panel 3 or a sensor unit 4 by a first power source 2 as a general house-service A.C. power source, and is operated in either of a normal direction or a reverse direction to thereby operate an antifreezing cock 6 into a drainage condition or a communicative condition. If the first power source 2 is broken by power failure or breaker operation, a selector switch 7 is automatically operated to connect a second power source 8 to the actuator 5 to thereby operate the actuator 5 and select the drainage condition of the antifreezing cock 6.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an antifreeze stopper used to prevent water pipes from freezing in winter, and more specifically, to an antifreeze stopper that is used to prevent water pipes from freezing in the winter. This invention relates to a mask for remote control.

(Prior art) As is well known, in cold regions, when the temperature drops to below zero during winter nights, water in the so-called rising portion of the water pipe that rises from the ground to the ground to distribute water to the house. A situation occurs where the liquid freezes.

To prevent such a situation, an anti-freeze plug is installed upstream of the base of the rising part, and if freezing is expected, operate this anti-freeze plug in advance to drain water from the rising part and prevent freezing. It is being prevented. Some antifreeze valves open and close manually, but attempts have been made to remotely control them by installing them inside the house using electrically operated actuators, and even using temperature sensors. Attempts have also been made to detect the water temperature at the rising edge using a 3D sensor, and to automatically activate an actuator when the water temperature falls below the expected freezing temperature.

(Problem to be Solved by the Invention) However, these actuators can no longer operate once the device is powered off.

Therefore, in the event of a power outage or if the breaker is tripped before a long period of non-use at a vacation home, etc., the water will freeze unless the water is drained from the rising part in advance.

(Means for solving the problems) The present invention has been made to solve the above problems,
A second power source is always provided separately from the first power source that drives the device, and when the first power source is turned off, the second power source is automatically connected to the actuator and the antifreeze valve is drained. is configured to operate.

(Example) Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 1 is a block diagram showing an embodiment of an antifreeze valve control device according to the present invention. Reference numeral 1 denotes a control circuit, which is normally driven by a first power source 2, which is the most commonly used household AC power source, and operates an actuator 5 in either forward or reverse direction in response to a signal from an operation panel 3 or a sensor unit 4. Then, operate the antifreeze valve 63 to switch to water draining state or water flowing state.

The actuator 5 is driven by a DC power source obtained by rectification by the control circuit 1. Reference numeral 7 denotes a changeover switch, which automatically connects and operates the second power source 8 to the actuator 5 to drain water when the first power source 2 is cut off due to a power outage or breaker operation.

FIGS. 2A and 2B are sectional views of essential parts of the antifreeze plug 6 used in this embodiment, with FIG. 2A showing the water flowing state and FIG. 2B showing the water draining state.

In the second AI2I, 11 is an antifreeze valve main body, which has an upstream port 11a connected to the upstream side of the piping and a downstream port 11b connected to the downstream rising part, and inside is the water flow valve seat 11.
It is divided into an upstream chamber lid and a downstream chamber 11e by c. Further, a drain chamber 11g connected to the downstream chamber 11e via the drain valve seat 11f is provided below, and the drain chamber 11g
The lower end portion of the drain pipe 13 is sealed by a cover 12, and a drain pipe 13 is connected to the side wall portion.

14 is a spindle, which is connected to the rod 15 via a spindle joint 16. The rod 15 extends upward in the mantle tube 17 and is connected to a slide shaft of an actuator, which will be described later, at a threaded portion formed at its upper end, which is not shown broken in FIG. 2A.

Therefore, the spindle 14 is moved up and down according to one movement of the actuator. In FIG. 2A, the spindle 14 is pulled upward, and the spindle 1
The upper large diameter portion 14a of 4 is separated from the water flow valve seat lie, while the lower large diameter portion 14b fits into the drain valve seat 11f.

Therefore, water flows in the direction of the arrow from the upstream side to the upstream chamber lid,
The water is sent to the rising portion via the water flow valve seat lie and the downstream chamber lie. When the spindle 14 is pushed down as shown in FIG. 2B, the upper large diameter part 14a of the spindle 14 fits into the water flow valve seat 11c, and the lower large diameter part 14b fits into the drain valve seat 11c.
Leave f.

Therefore, water flow from the upstream side is stopped, while water in the rising portion flows in the direction of the arrow and is drained through the downstream chamber 11b, the drain valve seat 11f, and the drain pipe 13. When draining water, air is introduced into the rising portion of the intake valve installed near the faucet, so water is drained without resistance.

Figure 3 shows the actuator 5 used in this example.
FIG.

A DC motor 22 is mounted on the frame 21, and its rotational motion is transmitted to a motor gear 24 via a reduction gear 8!23, and further transmitted to a valve gear 26 via an intermediate gear 25. The valve gear 26 is rotatably attached to the frame 21 by having a valve gear shaft 27 that rotates integrally with the valve gear shaft 27 supported by a bearing 28 . However, the valve gear shaft 27 is restricted so that it cannot move up and down in one way as can be seen from the figure. A thread 27a is cut into the lower portion of the valve gear shaft 27, and the thread 27a engages with a female thread 29a provided on the slide shaft 29. Slide shaft 2
The shaft portion 29b of No. 9 is slidably housed in a through hole 21a provided in the frame body 21. Also slide shaft 29
A dog par 30 having a dog 31 at its upper end is fixedly mounted on the upper surface of the flange portion 29C in an upright state.

The dog par 30 extends through a series 1 stopper hole 211) provided in the frame body 21. Therefore, Sly)
? 29 to the shirt 1 cannot rotate relative to the frame 21, and when the valve gear 26 rotates, the screws 27a and 29a
When engaged, it is guided by the through hole 21a and moves linearly up and down. Shaft portion 29b of slide shaft 29
A female screw 29d is provided at the lower end, which is screwed into the screw provided at the upper end of the rod 15 of the antifreeze plug 6, and is fixed by a suitable means such as a double nut.

As can be seen from the above explanation, the rotational movement of the motor 22 is
Ultimately, this is converted into a vertical linear movement of the spindle 14 of the antifreeze valve 6, and the antifreeze valve 6 is opened and closed.

In the frame (↑z21, a water flow limit switch 32 and a water drain limit switch 33 are installed vertically apart, and a dog 31 that moves vertically is attached to each rotor 32a, 33u.
It is aligned so that it is in contact with the In the state shown in FIG. 3, the dog is connected to the rotor 32 of the water flow limit switch 32.
a, and the electric circuit is cut off at this part, and the drain limit switch 33 shows a state in which the circuit is closed at that part.

The intermediate gear shaft 3.1 is implanted in the intermediate gear 25 so as to rotate together with the intermediate gear shaft 3.1, extends upward through the frame, and is provided with a handle 35 at its upper end. A spring 36 is disposed between the flange 34a of the intermediate gear shaft 34 and the frame 21, and urges the intermediate gear and the intermediate gear shaft upward. Therefore, when the handle 35 is pushed down I\, the engagement between the motor gear 24 and the intermediate gear 25 is disengaged, and the intermediate gear 25 becomes in mesh with only the valve gear 26.

If you turn the handle 35 in that state, it will slide.

The foot 29 moves up and down, and the antifreeze valve can be opened and closed by manual operation.

FIG. 4 is a circuit diagram of the main parts of this embodiment, and corresponds to the water flow state, that is, the state shown in FIG. 3.

As mentioned above, the first power supply 2 is connected in parallel to the 0 water flow limit switch 32 and the drain limit switch 33, which are supplied with current on the control circuit 09 and taken out, and the diodes 41 and 42 are connected as shown in the figure. It is set in the direction. Also,
A relay 43 constituting the changeover switch 7 in FIG. Therefore, when the first power supply 2 is turned on, the a contact 4
5 is closed, and b contact/I6 is open. In the water flowing state shown in FIG. 4, the diode 41 is in the opposite direction to the direction of the current from the first power source 2, so no current flows and the motor 22 is stopped. In this state, when a drain command signal is input from the operation panel 3 or the sensor unit 71-1, the switch 47 is switched from the position shown by the solid line to the position shown by the broken line by a suitable means such as a relay (not shown). Then, the current flows through the diode 41, the motor 22, and the drain limit switch 33, causing the motor 22 to rotate forward. Then, the spindle 14 of the antifreeze plug 6 moves downward from the second A[ll position. On the way, dog 31 turns water flow limit switch 3
2, and the water flow limit switch 32 is closed.

When the spindle 14 continues to descend further and reaches the state shown in FIG. 2B, the dog 31 comes into contact with the rotor 33a of the drain limit switch 33 and opens the drain limit switch 33.

This causes the current to reach 0 and the motor 22 stops.
Next, when the water supply command signal is input, the switch 47 is switched to the fourth
It is switched to the position shown by the solid line in the figure, current flows through the diode 42 - motor 22 - water flow limit switch 32, the motor 22 reverses, and stops when the spindle 14 of the antifreeze valve 6 reaches the state shown in Figure 2A. do.

Next, assume that the first power source 2 is cut off due to a power outage in the state shown in FIG. 4. In this case, relay 43 is demagnetized. Therefore, the a contact 45 opens and the b contact 46 opens.
will be closed. Therefore, the motor 32 is rotated in the normal direction by the second power source 8, and the state shown in FIG. 2B is obtained. Even if the first power source 2 is cut off at the intermediate position between FIG. 2A and FIG. 2B, since the water drain limit switch 33 is closed, the water drain operation (1:) is immediately performed by the second power source 8.

If the first power supply is cut off while the water is being drained, that is, in the state shown in Figure 2B, the water drain limit switch 33 is open, so the current does not flow wildly, but in this case, the water has already been drained. Therefore, there is no need to rotate the motor 22.

If you want to use water after the water draining operation has been automatically performed by the second power source as described above, you can open the antifreeze column 6 by operating the handle 35 as described above. can. In this case, if the manual switch 48f is left open, the antifreeze pillar 6 will not be closed again by the second power source 8. If you want to close the antifreeze pillar 6 before going to bed at night, just press the manual switch 48.

It is convenient if the 2':S source 8 is wired as shown by the dashed line in FIG. 4 so that it is always charged by the 1'yl source.

(Effects of the Invention) As described above, the present invention automatically connects the second power source to the actuator when the normally used first power source is cut off, and drains water from the antifreeze column. It is possible to prevent the situation where the antifreeze pillar does not operate during a power outage and water pipes freeze. Also, if you are going to be away for a long time, it is necessary to drain the water in advance, but there is no need to go to the trouble of operating the antifreeze pillar separately, and you can simply turn off the breaker, which is the power source for the entire house. You no longer have to worry about forgetting to operate the antifreeze pillar.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. Figures 2A and 2B are concave views showing the main parts of the antifreeze column, with Figure 2A showing the water flowing state and Figure 2B showing the water draining state. FIG. 3 is a side view of the main parts of the actuator. FIG. 4 is a circuit diagram showing the configuration of the actuator and the first and second power supplies. 1... Control circuit 2... First power supply 5...
・Actuator 6... Antifreeze column 7... Selector switch 8... 2nd power supply Patent applicant Nippo Valve Industries Co., Ltd. (5 others) 3 Operation panel Fig. 2A Fig. 2B

Claims (1)

[Claims] In an antifreeze faucet control device that operates an electrically driven actuator in forward and reverse directions to drain and pass water through the antifreeze faucet, respectively, a second power source separate from the first power source normally used is used. a power source, and a changeover switch operated by opening and closing of the first power source, and when the first power source is turned on, the changeover switch connects the first power source and the actuator, and the second power source and the actuator, and when the first power source is cut off, the changeover switch disconnects the first power source and the actuator, and connects the second power source to the actuator so that the actuator operates in the normal direction. An antifreeze valve control device characterized in that: