KR101643522B1 - Automatic water supply device utilizing the potential difference between the two potential detection pin for pig breeding - Google Patents

Automatic water supply device utilizing the potential difference between the two potential detection pin for pig breeding Download PDF

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Publication number
KR101643522B1
KR101643522B1 KR1020160017008A KR20160017008A KR101643522B1 KR 101643522 B1 KR101643522 B1 KR 101643522B1 KR 1020160017008 A KR1020160017008 A KR 1020160017008A KR 20160017008 A KR20160017008 A KR 20160017008A KR 101643522 B1 KR101643522 B1 KR 101643522B1
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water
voltage
pin
potential
unit
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KR1020160017008A
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Korean (ko)
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김기주
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김기주
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K7/00—Watering equipment for stock or game
    • A01K7/02—Automatic devices ; Medication dispensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)

Abstract

The present invention relates to a water bowl (30) for holding water for a pig to eat; A water supply unit for supplying water to the water vessel (30); And an electric potential difference between the two potential sensing pins,
The water supply unit includes a water supply pipe 80 installed to receive water to be supplied to the water vessel 30 and a water supply pipe 80 for supplying water to the water supply pipe 80, An upper potential sensing pin 111 installed at a predetermined height on the upper surface of the water vessel 30 to sense the level of water on the upper portion of the water vessel 30 so that water does not overflow, A lower potential sensing pin 112 installed at a height lower than the pin 111 to sense that the water level is not lowered, And a control unit for controlling the solenoid valve as a measured value of the circuit unit 120,
The circuit unit 120 includes an upper pin voltage input unit 121 connected to the upper potential sensing pin 111 and an upper reference voltage unit 122 having the same conventional voltage regardless of the voltage of the upper pin voltage input unit 121. [ A lower pin voltage input part 124 connected to the lower potential detection pin 112 and a lower pin voltage input part 124 connected to the lower potential detection pin 112. The lower pin voltage input part 124 is connected to the upper potential detection pin 111, A lower reference voltage part 125 having the same conventional voltage regardless of the voltage of the lower pin voltage input part 124, And a lower voltage detection unit 126,
In order to solve the problem of mistaking the control unit for water due to a small amount of water adhering to the side surface rather than the rising water, and thus failing to supply water by using the potential difference of the two potential sensing pins according to the present invention, It is possible to prevent a situation where the pig does not eat water because the water does not come out and the upper potential detection pin And the lower potential sensing pin is installed lower than the upper potential sensing pin to check the voltage of the voltage sensing plate outputted through the potential difference through the two potential sensing pins, To control the solenoid valve according to the control signal,
Especially, in the summer, pigs can not get enough heat to hit the water, but when the pigs want to catch the water, the solenoid valve is kept closed by the ripple wave. Therefore, it is possible to prevent water leakage and to provide hygienic and efficient management.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic water supply device using a potential difference between two potential sensing pins,

[0001] The present invention relates to an automatic water supply device for swine using a potential difference between two potential sensing pins, more particularly, to a control device for sensing an absence of water contacting a lower potential sensing pin through two potential sensing pins, The control unit determines that the water reaches the upper potential sensing pin when the water in the water bowl is automatically closed and closes the solenoid valve. If the water level is controlled by the control unit by the potential difference, the water level is prevented In order to solve the problem that the control part is mistaken for water and does not supply water due to a small amount of water sticking to the side surface, Ignore a small amount of water such as water drops, do not react with a small amount of water,

Especially, in the summer, pigs can not get enough heat to hit the water, but when the pigs want to catch the water, the solenoid valve is kept closed by the ripple wave. The present invention relates to an automatic water supply device for swine, which uses a potential difference between two potential sensing pins, which can prevent water spillage and provide hygienic and efficient management.

Conventional methods of supplying water to pigs with nipples have been a cause of the increase of wastewater due to the excessive water leakage. Therefore, wastewater treatment costs are becoming increasingly burdensome and environmental pollution is also a problem.

In other ways, the vacuum water supply system using the valve valve has the advantage of reducing water waste because the water level is maintained at a constant level in the water dispenser, but there is a drawback in that the water is stagnated and the water is decayed and the pour water is decreased. Soon, pigs prefer fresh water to the water pipe, and there is only old water near the opposite edge, which is corrupt and often requires cleaning with a high pressure washer.

Therefore, the sensor and the water supply pump connected to it are installed, and when the water is exhausted, the fresh water is supplied again and the water is fresh, and the pig becomes a lot of negative water. Therefore, the feed intake is also increased, There is an economic advantage.

The present invention relates to a liquid feeder for swine in Registration Number 10-1084915 as a prior art for automatic feed using the sensor, and includes a feed outlet member, a feed plate, a partition, The feeding member is installed at a lower portion of the fixing nut, and the feed discharging member is disposed at the upper surface of the feed receiving plate, The feed support plate is slidably contacted with the feed support plate, the feed support plate is provided with a retaining ring in the lower direction, a partition is provided to be in contact with the lower surface of the retaining ring, By attaching the fixing nut to the spoke-shaped fixing plate after the lower end of the connecting rod has passed, When the base fluid is moved, the connecting rod coupled with the spiral-shaped fixing plate inside the fluid moves. The movement of the connecting rod moves the upper feed discharging member on the feed receiving plate with the center point of the contact point between the stationary ring and the partition, And a feed pipe located at the bottom is supplied to the substrate through a gap between the lower outlet of the case and the feed support plate, and a water supply pipe is connected to the upper portion of the feeding pipe separately from the hopper case. And the liquid feed for swine is characterized in that the liquid feed for swine is characterized.

In addition, Japanese Patent Application Laid-Open Publication No. 10-2013-0129535 discloses an automatic water supply method for pigments, in which a water supply pipe provided with a nipple at the lower end thereof is installed at an upper portion of a water vessel to supply water, A water level sensor is provided on the water vessel so that if the water level is below a certain level in the water vessel, the water level sensor detects the water level and transmits a signal to the water level controller When the opening and closing cock is protruded from the bottom of the nip with the mouth of the pig, the water flows out from the nipple. When the water reaches a predetermined level in the water container, the water level sensor The controller senses this, transmits a signal to the control unit, closes the electric side for supplying water to the water supply pipe, so that the pig moves the opening / closing cock of the nipple And water is prevented from coming out from the nipple even when the water is supplied to the nipple.

In addition, the registration utility model registration No. 20-0446260 discloses an automatic water level control valve connected to a drinking water supply pipe, a main water pipe vertically mounted to the automatic water level control valve, and a predetermined distribution unit at the lower end of the main water pipe, A plurality of distribution water supply pipes arranged at a predetermined interval in the distribution unit and having a lower end inserted at the same height in the water tank; And a control valve is provided on the distribution water supply pipe.

However, in the conventional device as described above, there is a disadvantage in that when water is attached to the sensing rod for sensing the water level, it is determined that there is water, and the water does not come out in spite of the absence of water.

In order to solve the problem that the control part mistakes water due to a small amount of water sticking to the side rather than the water coming out of the automatic water supply device using the potential difference of the two potential sensing pins of the present invention, It is possible to prevent a situation where the pig does not eat water because the water does not come out and the upper potential detection pin And the lower potential sensing pin is installed lower than the upper potential sensing pin to check the voltage of the voltage sensing plate outputted through the potential difference through the two potential sensing pins, To control the solenoid valve according to the control signal,

Especially, in the summer, pigs can not get enough heat to hit the water, but when the pigs want to catch the water, the solenoid valve is kept closed by the ripple wave. The present invention is to provide an automatic water supply device for swine using potential difference of two potential sensing pins which can prevent water leakage and provide hygienic and efficient management.

The present invention relates to a water bowl (30) for holding water for a pig to eat; A water supply unit for supplying water to the water vessel (30); And an electric potential difference between the two potential sensing pins,

The water supply unit includes a water supply pipe 80 installed to receive water to be supplied to the water vessel 30 and a water supply pipe 80 for supplying water to the water supply pipe 80, An upper potential sensing pin 111 installed at a predetermined height on the upper surface of the water vessel 30 to sense the level of water on the upper portion of the water vessel 30 so that water does not overflow, A lower potential sensing pin 112 installed at a height lower than the pin 111 to sense that the water level is not lowered, A circuit unit 120 for generating a required measurement value, and a control unit for controlling the solenoid valve as a measurement value of the circuit unit 120. [

In order to solve the problem of mistaking the control unit for water due to a small amount of water adhering to the side surface rather than the rising water, and thus failing to supply water by using the potential difference of the two potential sensing pins according to the present invention, It is possible to prevent a situation where the pig does not eat water because the water does not come out and the upper potential detection pin And the lower potential sensing pin is installed lower than the upper potential sensing pin to check the voltage of the voltage sensing plate outputted through the potential difference through the two potential sensing pins, To control the solenoid valve according to the control signal,

Especially, in the summer, pigs can not get enough heat to hit the water, but when the pigs want to catch the water, the solenoid valve is kept closed by the ripple wave. Therefore, it is possible to prevent water leakage and to provide hygienic and efficient management.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a water supply part of an automatic water supply device for pigs using potential difference of two potential sensing pins of the present invention. FIG.
FIG. 2 is a circuit diagram of an automatic water supply device for pigments using a potential difference between two potential sensing pins of the present invention. FIG.

The present invention relates to a water bowl (30) for holding water for a pig to eat; A water supply unit for supplying water to the water vessel (30); And an electric potential difference between the two potential sensing pins,

The water supply unit includes a water supply pipe 80 installed to receive water to be supplied to the water vessel 30 and a water supply pipe 80 for supplying water to the water supply pipe 80, An upper potential sensing pin 111 installed at a predetermined height on the upper surface of the water vessel 30 to sense the level of water on the upper portion of the water vessel 30 so that water does not overflow, A lower potential sensing pin 112 installed at a height lower than the pin 111 to sense that the water level is not lowered, And a control unit for controlling the solenoid valve as a measured value of the circuit unit 120,

The circuit unit 120 includes an upper pin voltage input unit 121 connected to the upper potential sensing pin 111 and an upper reference voltage unit 122 having the same conventional voltage regardless of the voltage of the upper pin voltage input unit 121. [ A lower pin voltage input part 124 connected to the lower potential detection pin 112 and a lower pin voltage input part 124 connected to the lower potential detection pin 112. The lower pin voltage input part 124 is connected to the upper potential detection pin 111, A lower reference voltage part 125 having the same conventional voltage regardless of the voltage of the lower pin voltage input part 124, And a lower voltage detection unit (126) that is different from the lower voltage detection unit (126).

Further, when the voltage measured by the upper voltage detector 123 becomes higher than the set voltage, the solenoid valve is closed.

When the voltage measured by the lower voltage detector 126 is lower than the predetermined voltage, the controller opens the solenoid valve.

The controller receives the voltages from the upper voltage detector 123 and the lower voltage detector 126. When the voltage of the lower voltage detector 126 is less than 4 V, The solenoid valve is opened and when the voltage of each of the upper voltage detector 123 and the lower voltage detector 126 is 4 V or more and 24 V or less in a state in which the solenoid valve is open, the water is determined to be the highest number and the solenoid valve is closed .

The present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a circuit diagram of a water supply part of an automatic water supply device for swine using potential difference of two potential detection pins of the present invention, and FIG. 2 is a circuit diagram of an automatic water supply device for pigs using potential difference of two potential detection pins of the present invention.

The present invention will now be described more specifically with reference to the accompanying drawings, in which: Fig. A water supply unit for supplying water to the water vessel (30); And an electric potential difference between the two potential sensing pins,

The water supply unit includes a water supply pipe 80 installed to receive water to be supplied to the water vessel 30 and a water supply pipe 80 for supplying water to the water supply pipe 80, An upper potential sensing pin 111 installed at a predetermined height on the upper surface of the water vessel 30 to sense the level of water on the upper portion of the water vessel 30 so that water does not overflow, A lower potential sensing pin 112 installed at a height lower than the pin 111 to sense that the water level is not lowered, And a control unit for controlling the solenoid valve as a measured value of the circuit unit 120,

The circuit unit 120 includes an upper pin voltage input unit 121 connected to the upper potential sensing pin 111 and an upper reference voltage unit 122 having the same conventional voltage regardless of the voltage of the upper pin voltage input unit 121. [ A lower pin voltage input part 124 connected to the lower potential detection pin 112 and a lower pin voltage input part 124 connected to the lower potential detection pin 112. The lower pin voltage input part 124 is connected to the upper potential detection pin 111, A lower reference voltage part 125 having the same conventional voltage regardless of the voltage of the lower pin voltage input part 124, And a lower voltage detection unit 126 that is different from the lower voltage detection unit 126.

The water vessel (30) has an internal space in which water can be contained to allow the pig to eat water.

The water supply unit is provided to supply water to the water vessel 30 appropriately.

The water supply pipe (80) draws water from the outside as a water hose, and supplies the water of the water supply pipe (80) to the water bowl (30) through the other discharge port.

The solenoid valve is installed in a part of the water supply pipe 80 so as to open and close the water flow of the water supply pipe 80. The solenoid valve is opened and closed by the control unit according to the measured value of the circuit unit 120.

When the voltage measured by the upper voltage detector 123 becomes higher than a predetermined voltage, the solenoid valve is closed.

The set voltage of the upper voltage detector 123 is determined to be 4V or more and 24V or less when the water reaches the set voltage, and when the set voltage is reached, the control unit determines that the solenoid valve is closed.

When the voltage measured by the lower voltage detector 126 is lower than the predetermined voltage, the control unit opens the solenoid valve.

The set voltage of the lower voltage detector 126 is a reference for judging that water does not reach 3V or more and less than 4V, and when the voltage becomes a set voltage, the controller determines that the solenoid valve is opened.

The water vessel 30 is at 0V as a ground.

The upper pin voltage input unit 121 is a voltage received from the upper potential sensing pin 111. The lower pin voltage input unit 124 is a voltage received from the lower potential sensing pin 112. The upper potential sensing pin The voltage of the upper pin voltage input part 121 becomes lower and the voltage of the upper voltage detection part 123 becomes lower and the voltage of the upper pin voltage input part 121 becomes lower when the potential difference of the upper potential detection pin 111 becomes lower. The voltage of the lower voltage detection unit 123 is increased and the voltage of the lower pin voltage input unit 124 is higher and the voltage of the lower voltage detection unit 126 is lowered when the potential difference of the lower potential detection pin 112 is higher, When the potential difference of the lower potential detection pin 112 is lowered, the voltage of the lower pin voltage input part 124 is lowered and the voltage of the lower voltage detection part 126 is higher.

The upper voltage detection unit 123 and the lower voltage detection unit 126 respectively detect voltages of 3V to 24V.

The upper reference voltage part 122 and the lower reference voltage part 125 are included for checking the potential difference and are set to 20V, respectively.

The upper reference voltage section 122 is not changed even if the height of the water sensed by the upper potential sensing pin 111 is different and the potential difference of the upper voltage detector 123, which is the last output section of the circuit section 120, will be.

The lower reference voltage part 125 is not changed even if the height of the water sensed by the lower potential sensing pin 112 is different and the potential difference of the lower voltage detecting part 126, which is the last output part of the circuit part 120, will be.

The upper voltage detection unit 123 and the lower voltage detection unit 126 are the ones that finally receive the voltage input to the control unit and the final output voltage of the upper voltage detection unit 123 and the final output of the lower voltage detection unit 126 The voltage is transmitted to the control unit, and the control unit determines the height of the water by the voltage and automatically opens and closes the solenoid valve.

The upper potential sensing pin 111 and the lower potential sensing pin 112 are spaced apart from each other at a predetermined height on the upper surface of the water vessel 30 and the lower potential sensing pin 112 is connected to the upper potential sensing pin 111 It is installed low.

The upper potential detection pin 111 and the lower potential detection pin 112 generate voltages in the upper voltage detection unit 123 and the lower voltage detection unit 126 respectively according to the water level of the water to which the upper potential detection pin 111 and the lower potential detection pin 112 are connected, Each of the voltages of the lower voltage detection unit 126 generates a voltage of not less than 3 V and not more than 4 V when water is not exposed, and a voltage of not less than 4 V and not more than 24 V when exposed to water.

The control unit may misunderstand that there is no water at the bottom due to moisture adhering to the upper potential sensing pin 111 or the lower potential sensing pin 112. Therefore, the potential difference is used.

The upper potential sensing pin 111 and the lower potential sensing pin 112 are spaced apart from each other at a predetermined height on the upper surface of the water vessel 30. The upper potential sensing pin 111 is lower than the lower potential sensing pin 112 And the voltage to be transferred to the circuit portion is changed according to the level of the water that the upper potential sensing pin 111 and the lower potential sensing pin 112 touch.

If the water does not touch the electric potential detection pins 111 and 112 and the water is insufficient soon, a voltage of 3 V or more and less than 4 V is delivered to the control unit through the voltage detection units 123 and 126 of the circuit unit. The minimum voltage of 3V is delivered.

When water reaches the lowermost end of the potential detection pins 111 and 112, a voltage of 4 V is transmitted to the control unit through the voltage detection units 123 and 126 of the circuit unit.

When the water touches the potential detection pins 111 and 112 while the water is insufficient, a voltage of less than 4 V is delivered to the control unit through the voltage detection units 123 and 126 of the circuit unit to treat the same as the lack of water.

When the water touches the potential detection pins 111 and 112, a voltage of 4 V or more and 24 V or less is delivered to the control unit according to the height of the water surface.

Therefore, when the voltage of the lower voltage detector 126 is higher than 3V and lower than 4V, the control unit determines that the water is insufficient When the solenoid valve is open and the voltages of the upper voltage detector 123 and the lower voltage detector 126 are both 4V or more and 24V or less in a state where the solenoid valve is open, the water is determined to be the highest number and the solenoid valve is closed.

The solenoid valve is opened when the electricity is turned on, and is blocked when the electricity does not pass.

The upper potential sensing pin 111, the circuit portion, the lower potential sensing pin 112 and the circuit portion, and the solenoid valve and the control portion are connected by a sensor line to transmit a voltage signal.

According to one embodiment of the present invention, the controller determines that there is water in the upper part through the voltage of the upper voltage detector 123, and determines that there is no water in the lower part through the voltage of the lower voltage detector 126 If it is judged that there is no water, the solenoid valve is opened.

The upper potential sensing pin 111 and the lower potential sensing pin 112 are spaced apart from each other at a predetermined height on the upper surface of the water vessel 30 and the lower potential sensing pin 112 is connected to the upper potential sensing pin 111 And is installed inside a pipe having a predetermined diameter together with the water supply pipe. The outer surface of the pipe is made of stainless steel and the inside is coated with plastic.

Therefore, in order to solve the problem that the controller does not supply water due to misunderstanding that there is water by a small amount of water sticking to the side, rather than the rising water, using the potential difference of the two potential sensing pins according to the present invention , The moisture sticking to the surfaces of the two potential sensing pins and a small amount of water such as water droplets are ignored so as not to react with a small amount of water to prevent the situation where the pig does not eat water because water does not come out, The pin is installed at a predetermined height of the water container and the lower potential sensing pin is installed lower than the upper potential sensing pin and the voltage of the voltage sensing plate outputted through the potential difference is checked through the two potential sensing pins, The solenoid valve is controlled according to the resistance,

Especially, in the summer, pigs can not get enough heat to hit the water, but when the pigs want to catch the water, the solenoid valve is kept closed by the ripple wave. Therefore, it is possible to prevent water leakage and to provide hygienic and efficient management.

30: water bowl
80: water supply pipe
111: upper potential sensing pin 112: lower potential sensing pin
120: circuit part 121: upper pin voltage input part
122: upper reference voltage section 123: upper voltage detection section
124: lower pin voltage input unit 125: lower reference voltage unit
126: lower voltage detecting unit 130: pipe
140: control box

Claims (3)

A water bowl (30) which holds water for the pigs to eat; A water supply unit for supplying water to the water vessel (30); And an electric potential difference between the two potential sensing pins,
The water supply unit includes a water supply pipe 80 installed to receive water to be supplied to the water vessel 30 and a water supply pipe 80 for supplying water to the water supply pipe 80, An upper potential sensing pin 111 installed at a predetermined height on the upper surface of the water vessel 30 to sense the level of water on the upper portion of the water vessel 30 so that water does not overflow, A lower potential sensing pin 112 installed at a height lower than the pin 111 to sense that the water level is not lowered, And a control unit for controlling the solenoid valve as a measured value of the circuit unit 120,
The circuit unit 120 includes an upper pin voltage input unit 121 connected to the upper potential sensing pin 111 and an upper reference voltage unit 122 having the same conventional voltage regardless of the voltage of the upper pin voltage input unit 121. [ A lower pin voltage input part 124 connected to the lower potential detection pin 112 and a lower pin voltage input part 124 connected to the lower potential detection pin 112. The lower pin voltage input part 124 is connected to the upper potential detection pin 111, A lower reference voltage part 125 having the same conventional voltage regardless of the voltage of the lower pin voltage input part 124, And a lower voltage detection unit (126) for detecting a potential difference between the two potential detection pins.
The automatic pig iron supplying apparatus according to claim 1, wherein the solenoid valve is closed when a voltage measured by the upper voltage detector (123) is higher than a predetermined voltage.
The automatic pig iron supplying apparatus according to claim 1, wherein the control unit opens the solenoid valve when the voltage measured by the lower voltage detector (126) is lower than the set voltage.

KR1020160017008A 2016-02-15 2016-02-15 Automatic water supply device utilizing the potential difference between the two potential detection pin for pig breeding KR101643522B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980004941A (en) * 1995-11-28 1998-03-30 키타오카 타카시 Output potential supply circuit
KR101201545B1 (en) * 2012-05-21 2012-11-15 김기주 water supply equipment for automatic meal supply bowl
KR20130012147A (en) * 2013-01-14 2013-02-01 박종대 Electronic livestock feeding equipment
KR20130129535A (en) * 2012-05-21 2013-11-29 김기주 Automatic water supply method for swine breeding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980004941A (en) * 1995-11-28 1998-03-30 키타오카 타카시 Output potential supply circuit
KR101201545B1 (en) * 2012-05-21 2012-11-15 김기주 water supply equipment for automatic meal supply bowl
KR20130129535A (en) * 2012-05-21 2013-11-29 김기주 Automatic water supply method for swine breeding
KR20130012147A (en) * 2013-01-14 2013-02-01 박종대 Electronic livestock feeding equipment

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