JPH0713489Y2 - Water supply device control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a water supply device for livestock or poultry, and more particularly to a device for automatically controlling the replacement of water.

[Conventional technology]

For example, JP-A-60-153730 discloses that water is supplied to a water supply container at regular intervals. With such a water supply system, while the water is stored in the water supply container, the water is spoiled, and various bacteria propagate inside the water supply container, so that a hygienic water supply state cannot be maintained.

On the other hand, Japanese Unexamined Utility Model Publication No. 64-6866 discloses that a water supply pipe having a water stop function is attached to a water supply pipe to supply water in the water supply pipe in accordance with a required motion of a bird or the like. With such a supply system, the stored water does not come into direct contact with the outside air in the pipe, so that sanitary water supply can be achieved without spoilage or germ growth.

However, during the summer or winter, the water inside the pipe becomes high or vice versa due to the outside air, and the water for breeding tends to have an inappropriate temperature. When water of such an inappropriate temperature is supplied to livestock or poultry,
There is a problem that the rearing condition of them deteriorates, and the developmental condition and spawning efficiency are adversely affected.

[Prior art]

The above problems can be solved by forcibly discharging the water in response to the temperature of the water.

In FIG. 1 and FIG. 2, the water supply device 1 can supply the water 3 of the water supply source 2 such as tap water to the plurality of water supply devices 5 through the pipe 4, and the drain port 6 on the terminal side of the pipe 4.
An electric or electromagnetic drain valve 7 is provided on the upstream side. The water supply device 5 has a structure as disclosed in Japanese Utility Model Application Laid-Open No. 64-6866, is movable in the upward direction inside the cylindrical main body 8, and is operated by the internal pressure of the water 3 or gravity. It is composed of a water shutoff valve 9 that can be seated on the seat portion.

Then, the control device 10 includes a temperature sensor 11 that detects the temperature of the water 3 inside the pipe 4, and a comparator that compares the temperature signal from the temperature sensor 11 with the reference temperature signals from the two temperature setters 12 and 13. It is assembled by a driver 14 which receives an operation command from the comparator 14 as an input, generates a drive output for a predetermined time, and drives the drain valve 7.

A thermometer 20, a filter 21, a pressure reducing valve 22, an air eliminator 23, etc. are attached to the pipe 4 as required.

The water supply device 1 guides the water 3 from the water supply source 2 to each water supply device 5 through the pipe 4. When ingesting the water 3, livestock, poultry, or the like goes to the vicinity of the water supply device 5 and pushes up the water stop valve 9 with the tip of the mouth to open the water supply device 5 and drink the required amount of water 3. As described above, the water supply device 1 is set in a state in which only a necessary amount can be taken according to the required operation for drinking water such as livestock or poultry.

On the other hand, the temperature sensor 11 of the control device 10 detects the temperature inside the pipe 4, generates a temperature signal, and sends the temperature signal to one input end of the comparator 14. The comparator 14
By comparing the upper limit temperature signal from the preset temperature setting device 12 or the lower limit temperature signal from the temperature setting device 13, when the temperature is within the suitable temperature range, no output is generated, but when the temperature is out of the suitable temperature range, For example, an “H” level operation command is generated and sent to the driver 15.

Therefore, the driver 15 inputs an operation command, generates a drive output for a predetermined time, and opens the drain valve 7 to open the water 3 in the pipe 4 from the drain port 6. Forced discharge to the outside. As a result, the water 3 inside the pipe 4 is filled with the water 3 having a new appropriate temperature, and is set in a state in which the water having an appropriate temperature can be supplied.

In addition, in the summer, the temperature of the water 3 gradually increases due to the outside air temperature when it is accumulated inside the pipe 4,
The water 3 in the pipe is replaced when it reaches the upper limit temperature. On the contrary, in the winter, the temperature of the water 3 inside the pipe 4 gradually decreases due to the cold air outside, so that the water 3 inside the pipe 3
Is forcibly discharged when the lower limit temperature is reached. In any case, the temperature of the water 3 inside the pipe 4 is always automatically kept within an appropriate temperature range.

Next, in the water management as described above, it is more advantageous if the forced drainage operation by temperature and the drainage operation after a certain period of time are performed in parallel.

3 and 4, the control device 10 includes a temperature sensor 11, a comparator 14, a driver 15, and a timer 16. The timer 16 is connected on the input side to a time setter 17, and is connected on the output side to the input end of the driver 15.

As in the case of FIG. 1, the temperature sensor 11 and the comparator 14 open the drain valve 7 in accordance with the change in the temperature of the water 3 inside the pipe 4, and force the water 3 inside the pipe 4 into force. Will be discharged. The cycle of the drainage operation at this time is indefinite because it depends on the temperature of the water 3, and may extend for a long period of one day or more at times other than summer or winter. As a result, the water 3 inside the pipe 4 is not exchanged for a long period of time,
There is also the possibility of corruption.

Therefore, the timer 16 drives the driver 15 in response to the replacement instruction at the replacement cycle preset by the setting device 17,
By opening the drain valve 7, the water 3 is forcibly replaced regardless of the temperature change of the water 3, and the water 3 inside the pipe 4 is replaced.
It prevents long-term retention.

The timer 16 is provided with an outside air temperature sensor 19 in addition to the setter 17, and shortens the cycle operation time when the outside air temperature rises and sets the cycle operation time long when the outside air temperature falls. By doing so, the required minimum amount of water 3 is exchanged. When the timer 16 is composed of an electronic circuit including an oscillation circuit and the like, the outside air temperature sensor 19 can be structured as an electrical element that changes the time constant according to the temperature.

[Problems of the above technology]

According to the control shown in FIG. 3, the comparator 14 and the timer 16 are independent of each other, and when they are operated at the same time in a short time period, that is, the water in the pipe 4 is operated based on the operation command from the comparator 14. Immediately after 3 is forcibly drained, it is expected that the drain operation will be repeated again by the replacement command from the timer 16, resulting in unnecessary drain operation being repeated in a short time.

[Purpose of device]

Therefore, an object of the present invention is to prevent unnecessary drainage operation by the timer 16 immediately after the temperature-based drainage operation.

[Means for solving the invention]

Based on the above-mentioned object, in order to prevent the unnecessary drainage operation by the timer 16 immediately after the temperature-based drainage operation, the present invention performs the temperature-based drainage operation by the operation command from the comparator 14. When it is executed, the operation of the timer 16 is returned to the initial state by the output of the comparator 14, so that the starting point of the constant cycle coincides with the starting point of the temperature-based drainage operation, thereby eliminating unnecessary drainage operation.

〔Example〕

FIG. 5 shows the control device 10 of the present invention. The structure of the water supply device 1 is the same as that shown in FIGS. 1 and 3.

The control device 10 has a comparator 14 and a timer 16 as in the case of FIG. 3, but additionally has a reset circuit 18 between the output side of the comparator 14 and the input side of the timer 16. There is.

As shown in FIG. 6, the temperature of the water 3 reaches the upper limit temperature,
When the temperature is out of the appropriate temperature range, the comparator 14 issues an operation command to drive the driver 15 to open the drain valve 7 and forcibly discharge the water 3 inside the pipe 4. At this time, the reset circuit 18 receives the operation command from the comparator 14 and resets the timer 16,
Return to the initial state. Therefore, the timer 16 integrates a fixed period from the starting point of the drainage operation based on the temperature.

As a result, immediately after the water 3 having an inappropriate temperature is discharged, the drain operation is not repeated by the replacement instruction from the timer 16 again, and unnecessary drain operation can be prevented in advance. Of course, even if the temperature of the water 3 is maintained within an appropriate range after the water 3 having an inappropriate temperature is discharged, the timer 16 drives the driver 15 after a certain period of time has passed. By doing so, the water 3 inside the pipe 4 is forcibly replaced.

Here again, the timer 16 is provided with the outside air temperature sensor 19 in addition to the setter 17, and shortens the cycle operation time when the outside air temperature rises and lengthens the cycle operation time when the outside air temperature falls. By setting the minimum required water 3
Will be exchanged. When the timer 16 is composed of an electronic circuit including an oscillation circuit and the like, the outside air temperature sensor 19 is composed as an electrical element that changes the time constant according to the temperature.

[Effect of device]

 The present invention provides the following unique effects.

First, when the temperature of the water in the pipe goes out of the appropriate temperature range, the internal water is forcibly discharged to the outside, so that water at an appropriate temperature can be supplied to livestock or poultry at all times. The developmental and spawning conditions can always be maintained in good condition.

Next, the water in the pipe is drained according to the change in temperature, and the water in the pipe stays for a long period of time because it is forcibly replaced by a timer at fixed time intervals. Therefore, it is possible to always supply fresh water, and keep the livestock and poultry in good hygiene and health.

Especially, when the temperature of water in the pipe is out of the appropriate temperature range and the comparator forcibly drains water, the reset circuit sets the timer to the reset state based on the operation command from this comparator. Therefore, the drainage operation by the timer is not performed immediately after the forced drainage operation according to the temperature. Therefore, the uneconomical water exchange operation can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram of a control device, FIG. 2 is an explanatory diagram of control operation of the device of FIG. 1, FIG. 3 is a block diagram of another control device, and FIG. 4 is of a device of FIG. FIG. FIG. 5 is a block diagram of the control device of the present invention, and FIG. 6 is an operation explanatory diagram of the present invention. 1 ... Water supply device, 2 ... Water supply source, 3 ... Water, 4 ... Piping, 5 ... Water supply device, 6 ... Drain port, 7 ... Drain valve, 10 ...
… Control device, 11 …… Temperature sensor, 12,13 …… Temperature setting device, 14 …… Comparator, 15 …… Driver, 16 ……
Timer, 17 …… Setting device, 18 …… Reset circuit, 19 ……
Outside temperature sensor.

Claims (2)

[Scope of utility model registration request] 1. A water supply device (1) for supplying water (3) from a water supply source (2) to a plurality of water supply devices (5) through a pipe (4), the temperature of water (3) in the pipe (4). A temperature sensor (11) for detecting the temperature, a comparator (14) for comparing the temperature signal from the temperature sensor (11) with a reference temperature signal and generating an operation command when the temperature is out of an appropriate temperature range, and a predetermined cycle. A timer (16) that issues a replacement command with a comparator and a comparator (14)
Based on a reset circuit (18) that sends a reset signal to the timer (16) based on the operation command from, the operation command of the comparator (14) and the replacement command of the timer (16) are input along with a predetermined time. It consists of a driver (15) that generates drive output, and a drain valve (7) that is connected to the end side of the pipe (4) and that opens the drain port (6) by the drive output of the driver (15). (10) of the water supply device control device characterized by. 2. A control device (10) for a water supply device according to claim 1, characterized in that the time interval of the predetermined cycle of the timer (16) is changed in inverse proportion to the change of the outside air temperature. ).