JPS5881287A - Open/close detection type opening/closing valve - Google Patents

Abstract

PURPOSE:To surely detect a faucet forgotten to be closed or a water leakage by providing a reed switch on the valve chest of an opening/closing valve of such a type that is opened or closed by controlling the water pressure applied to a pressure body and by providing a magnet moving in conjunction with a valve plug. CONSTITUTION:When a water leakage occurs and the water is being discharged downstream an open/close detection type opening/closing valve 100, the pressure of the secondary chamber 103 and a pressure chamber is decreased, thereby a valve plug 107 is moved upward and is put in an opened condition. Accordingly, a magnet 132 is pushed up by means of the spring force of a spring 134 and is removed from a reed switch 138, which is thereby opened, and a valve opening signal is sent to a monitoring board to be displayed. Therefore, whether the valve plug 107 of the open/close detection type opening/closing valve 100 is in a closed condition or in an opened condition can be detected by means of the display on the monitoring board.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an opening/closing detection deployment/closing valve Kll that can detect forgetting to close a water faucet on the downstream side, water leakage, etc.

Generally, schools, buildings, etc. are equipped with numerous water taps. By the way, since the water taps in such facilities are used by an unspecified number of people, they are often forgotten to close, and even if water leaks occur due to aging, they are often left unattended. In some cases, water was wasted.

Conventionally, such facilities were not equipped with a device to detect warm water that had been left closed, so the only way to find these warm water that had been left closed was through patrols by management personnel.

For this reason, attempts have been made to develop devices for detecting water leaks and forgetting to close water taps, but all of these devices have complicated structures and high costs, and have not been put into practical use.

This invention was developed based on the circumstances described above, and its purpose is to detect the forgetting to close water taps, water leakage, etc., and to reduce costs due to its simple structure. It's about getting.

That is, the structure of the present invention is a type on-off valve O that opens and closes the valve body by applying water pressure in a water pipe to a pressure receiving body connected to the valve body.
A reed switch is provided in the valve box, and a magnet is provided which moves in a direction toward and away from the reed switch in conjunction with the valve body. In this type of on-off valve, the valve body is in a closed state when water is not being discharged on the downstream side, and the valve body is in an open state when water is being discharged on the downstream side. Therefore, the magnet moves in response to this valve body, and the reed switch opens and closes, so it is possible to detect whether water is being discharged on the downstream side, that is, whether the faucet has been forgotten to close or there is a water leak. In addition, this on-off detection type on-off valve can also be used as a main valve that is always installed in water supply facilities such as schools and buildings. And since the cost required to add the reed switches and magnets mentioned above is extremely low,
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The cost of doing so is extremely small.

An embodiment of the present invention will be described below with reference to the drawings.
Fi is a zero-source pipe for water supply equipment in schools, buildings, factories, etc., and this main pipe 1 is connected to a water main (wA not shown).

This main pipe 1 is provided with an opening/closing detection type closed valve 1011 according to the present invention. This open/close detection type closed valve 1
00 is for applying the water pressure of the tap water to the pressure receiving body and automatically opening and closing the p-valve body by the water pressure. A small controlled on-off valve 2 for internal on-off control is connected to this on-off detection type quantitative closing valve 100. In addition, this open/close detection type quantitative closing valve 10
A large number of water taps S... are connected to the downstream side of 0. The opening/closing detection type volume closing valve 100 is configured to output an opening/closing signal S in response to the opening/closing of its valve body, that is, whether or not water is being discharged on the downstream side, and send this to the monitoring panel 4. There is. This monitoring panel 4 is installed in the pipe operator's room, and the above-mentioned opening/closing signal 8, that is, this opening/closing detection type quantitative closing valve 1
It is configured to display whether or not water is being sprayed downstream of 00.

Next, the opening/closing detection type quantitative closing valve 100 will be described in detail.

In the figure, 101 is a valve box, and the valve box 101 is formed with a primary fire chamber 102 on the inflow side and a secondary g10B on the outflow side. And this - firebox 102 and secondary 1iJO
The interior of the jli is partitioned by a partition wall 4, and this partition wall 104
A valve port 108 is formed therein. In addition, it is a 1011 groaning strainer. This valve port 105KFi and the secondary g103 are brought into contact with the valve body 101 to close it. Further, a circular pressure receiving chamber 108 is formed in the upper part of the valve box 101. A pressure receiving body 109 is slidably accommodated in this O pressure receiving body gxoa. This pressure receiving body 109 has a disk shape, and its pressure receiving area is larger than that of the valve body 107, and an O ring 110 is fitted around its periphery.
9- and the inner surface of the pressure receiving chamber 108 are maintained liquid-tight. One side, that is, the upper side of the pressure receiving body 109 is the pressure i111 J Ks, and the other side, that is, the lower side is the buffer chamber 11.
It is formed in 2.

This pressure receiving body 109, the valve body 1111 and the valve rod 1
11, and this valve rod 111 slidably penetrates the lower wall 114 of the pressure receiving chamber 108 while maintaining liquid tightness. The pressure 111 JJ is communicated with the first fire chamber 2 through a communication passage 111K. A check valve mechanism 116 is provided in the middle of this communication path 1111.

Reference numeral 111 denotes the main body of the valve body 1, which is configured to be screwed onto the upper surface of the valve body 1, and is formed internally to be hollow.
A valve seat 1# is formed at the lower end. Then, a steel ball 119 comes into contact with this valve seat 111 from above due to gravity. It is configured to only allow flow from the 2 side to the pressure amount 111. Also, this main body 10
An orifice hole 120 is formed in the side surface of 1, and water is configured to flow from the primary ii[H) 7 to the pressure gill through this orifice hole 120, and is configured to provide a predetermined flow path resistance. .

First, a control port 121 is provided for this pressure gJ J JK, and a control pipe 122 is connected to the control port 121. This control pipe 122 is connected to the control on-off valve 2. In addition, the buffer chamber 11
2 communicates with the secondary chamber 102 via an orifice valve 121.

This orifice valve 123 has a buffer m1l from the secondary chamber 10B.
An orifice 125 is formed in the valve body 124 of the valve body 124, and the flow in the opposite direction is configured to provide a predetermined resistance by flowing through the orifice 115. There is.

A blind plug 126 is attached to the lower part of the valve box 101. This blind plug 12g is made of a non-magnetic material such as copper. A reed switch accommodating hole 127 is formed from the outside in the lower part of this blind plug 126, and a reed switch 128 is inserted into this reed switch accommodating hole 127. This reed switch housing hole 121 is filled with a synthetic resin or the like to fix the reed switch 121 and its conductor wire 11#, provide insulation, and provide waterproofing. 111 is provided protrudingly, and a magnet 132 is installed inside this guide tube 131.
is housed so as to be slidable in the vertical direction, that is, in the direction toward and away from the reed switch 121. And this magnet 13
An operating rod 13J is protruded from the valve 2, and the upper end of the operating rod 13B is in close contact with the lower end of the valve body 1010. The magnet 111 and the operating rod 133 are urged in the direction of contact with the valve body 101 by the Sgelling JJ4. Note that the pressure receiving body 109 and the valve body 101 are made of Sgeling 1.
35 in the valve closing direction.

Next, the operation of this embodiment will be explained. When the control opening/closing valve 2 is closed, the pressure on the primary gZ o x side passes through the communication passage 115 and is accumulated in the pressure chamber 111, and this pressure pushes down the pressure body 1014 and the valve body 101. The valve closes. When the control on-off valve ゛□“・2 opens, the pressure chamber 1
11 is released through the control pipe 111, the pressure inside this pressure chamber 111 is low, and the valve body 101 is
It is pushed up by the pressure of ii102@ and opens the valve.

Therefore, this opening/closing detection deployment/closing valve 100 acts as a main valve of water supply equipment. Then, the constancy control opening/closing valve 2 is opened, and the opening/closing detection deployment/closing valve 100 is in the opening operation state. By the way, in this case, if all the water taps 3 are closed and there is no water leakage, no water will flow downstream of the opening/closing detection deployment/closing valve 100. Therefore, -
The pressure inside the feeding chamber 102, the secondary chamber 10S, and the pressure chamber 111 is all the same, and the valve body 10'r's own weight i is the spring xi.
It is lowered by the biasing force of s and enters the valve closed state. Therefore, as the valve body 101 descends, the magnet 132 is pushed down and the reed switch 128 is closed. Therefore, a valve closing signal is output from this reed switch 12# and displayed on the monitoring panel 4. Friend, if the water supply faucet 3... is opened or water leaks, oIlB closed detection closed detection valve open/close valve 1
If water is being discharged on the oo side, secondary g J OJ
Since the pressure inside the pressure @ 111 becomes low, the valve body 101 rises as described above and enters the valve open state. Therefore, the magnet 132 is pushed up by the biasing force of the spring 1140 and separated from the reed switch 128. Therefore, this lead sui.

The valve opening signal 11#d is opened and a valve opening signal is sent to the monitor 1114 and displayed. Therefore, the display on the monitoring panel 4 determines whether the valve element 101 of the opening/closing detection expansion/closing valve 100 is actually closed or open, that is, whether all the water taps 3 are closed. In addition, it is difficult to detect whether there is any water leakage, whether the water tap 3... is opened, or whether there is water leakage. Therefore, when water use is not expected at night or on holidays, if there is an indication on the monitoring panel 4 that the valve element 101 of the open/close detection deployment/closing valve 100 is actually open, the water faucet 3. It can be determined that you forgot to close the... or that there is a water leak.

Note that the present invention is not limited to the above embodiment.

For example, the magnet may be attached directly to the valve body.

As mentioned above, the present invention provides a reed switch in the valve box of an on-off valve that opens and closes by controlling water pressure acting on a pressure receiving body,
It is also equipped with a magnet that moves in conjunction with the valve body.

Even if this type of on-off valve expansion valve is in operation, the valve body will actually close if there is no water discharge on the downstream side, and will open if water is discharged, so the reed switch and magnet described above will cause the valve body to close. By detecting the opening and closing of the valve body, it is possible to reliably detect whether or not there is water discharge on the downstream side, that is, whether there is a forgetting to close the water tap or a water leak. In addition, it is used as the main valve of water expansion equipment, and the cost of adding reed switches and magnets is extremely low, so it can be implemented at extremely low cost, and its effects are great.

[Brief explanation of drawings]

The figure shows one embodiment of the present invention, and FIG. 1 is an overall schematic diagram;
FIG. 2 is a longitudinal sectional view of the open/close detection type on-off valve. 1... Main pipe, S... Water tap, 4... Monitoring panel, 10
0--Opening/closing detection type closed valve, 101... Valve body, 109
...Pressure receiving body, 111...Pressure chamber, 12g...1 orange, XZa-・Reed switch, 132...Magnet.

Claims (1)

[Claims] A valve box having a primary chamber on the inflow side and a secondary chamber on the outflow side, a pressure receiving chamber formed in the valve box, and a pressure receiving body slidably housed in the pressure receiving chamber in a sealed manner. , a communication path that communicates the pressure chamber formed on one side of the pressure receiving body with the above-mentioned next chamber and introduces the pressure of the above-mentioned firebox into this pressure chamber, and is connected to the pressure receiving body and introduced into the pressure chamber. A valve body that closes communication between the above-mentioned first and second chambers by the sliding of the above-mentioned pressure receiving body due to the pressure applied, and a control that communicates the above-mentioned pressure chamber with the outside and releases the nine pressures introduced into this pressure chamber. An opening/closing detection deployment/closing valve comprising: a reed switch provided in the valve box; and a magnet that moves in a direction tangential to the reed switch in conjunction with the valve body.