CN112804874B

CN112804874B - Water supply system

Info

Publication number: CN112804874B
Application number: CN201880098281.5A
Authority: CN
Inventors: 今村芳敬
Original assignee: Hytem Co ltd
Current assignee: Hytem Co ltd
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2022-12-27
Anticipated expiration: 2038-10-26
Also published as: WO2020084780A1; CN112804874A; JPWO2020084780A1; JP7134506B2

Abstract

A water supply system for taking water from chickens raised in a cage (60), comprising a water supply pipe (3), a water feeder (4), a pressure reducing valve (2), an on-off valve (5), a cleaning panel (30), a water storage tank (40) and a pump (P), wherein the water supply pipe is arranged along a cage row (70), the water feeder is provided with a plurality of water supply pipes, the pressure reducing valve enables water conveyed from a water supply source to flow into the water supply pipe after reducing water pressure, the on-off valve is switched to any one of a closed mode for closing the downstream end of the water supply pipe and a discharge mode for communicating the downstream end of the water supply pipe with a discharge pipe (6), the cleaning panel is provided with a panel material (35) and a supply pipe (36), the panel material has air permeability, covers an air inlet (21) of a chicken house (10), the supply pipe supplies water to the upper surface of the panel material, the cleaning panel cools air passing through the air inlet by the panel material, the panel material is a panel material which is a panel material changed from vaporization heat of water to a low temperature, the water storage tank is arranged below the cleaning panel material, and the water is supplied to the discharge pipe, and the water flowing through the discharge pipe is guided to the discharge pipe.

Description

Water supply system

Technical Field

The present invention relates to a water supply system for water intake by chickens raised in a chicken-raising facility.

Background

In a large-scale chicken raising facility in which a plurality of chickens are raised in a plurality of cages, water supply to the chickens is also being made labor-saving. Generally, a water supply pipe is disposed along a cage row in which a plurality of cages are arranged in parallel in a horizontal direction, and water having a reduced water pressure is supplied from a water supply source such as a water supply line to the water supply pipe. A plurality of water supply devices are provided on the water supply pipe, and a downstream end of the water supply pipe is closed. The water feeder has a flow path that is opened and closed by a valve body that is vertically movable with respect to the main body. The valve body is pushed up by the chicken mouth, the flow path is opened, and the chicken can drink when flowing down. The water flowing out through the water supply device, i.e., the amount of water for the chicken drink, is newly supplied from the water supply source to the water supply pipe.

In the above-described configuration, since water is likely to stay in the water supply pipe, there is a problem that the water is heated when the temperature is high, such as in summer. The water feeder is configured such that water does not flow out if the chicken itself does not operate, but the amount of water intake decreases because the chicken tends not to drink warm water when the temperature is high. If the intake of water is reduced, the health of the chicken deteriorates, and the degree of retention of water increases with the reduction in the consumption of water, and the water falls into a vicious circle in which the water further warms up.

Therefore, the following water supply device has been proposed: water supplied to the water supply pipe is circulated through the storage tank, and if the water temperature increases, the water in the storage tank is sent to the cooling device by the pump, and the cooled water is returned to the storage tank (see patent document 1). This water supply device has an advantage of supplying cooled water to the water supply pipe even when the air temperature is high, but has a problem that installation costs increase and operation costs increase because a large number of necessary structures such as a tank, a cooling device, a pump for supplying water from the tank to the water supply pipe, and the like are required, and a complicated structure is obtained. In addition, since drinking water is circulated, high attention is required to prevent water contamination.

A water supply device has been proposed in which a water supply pipe has a two-layer structure of an inner pipe and an outer pipe, a water feeder is provided on the outer pipe, drinking water is made to flow between the outer pipe and the inner pipe, and cooling water is made to flow into the inner pipe, so that heat exchange is performed between water in the inner pipe and water in the outer pipe (see patent document 2). The cooling water is circulated through the storage tank, and the water in the storage tank is sent to the cooling device based on the detection of the temperature, and the cooled water is returned to the storage tank. This water supply device, like the device of patent document 1, has a problem in that installation costs increase and operation costs also increase because a large number of necessary structures such as a tank, a cooling device, a pump for sending water from the tank to the cooling device, a pump for sending water from the tank to an inner pipe, and the like are required, and a complicated structure is obtained. On this basis, a special water supply pipe of a two-layer structure is used. Therefore, the cost is high, and in the existing chicken raising facility, a large-scale process is required for exchanging the water supply pipe with the conventional water supply pipe, and the introduction is not easy.

In order to solve this problem, a water supply device has been proposed in which a cooling pipe is disposed along a water supply pipe so as to be externally applied, and the cooling pipe and the water supply pipe are covered with a heat insulating member (see patent document 3). The same thing as the device of patent document 2 is that cooling water is circulated through a storage tank, the water in the storage tank is sent to a cooling device based on the detection of the temperature, and the cooled water is returned to the storage tank. Therefore, a large number of structures are required, and the structure is complicated, which similarly increases the cost. Unlike the device of patent document 2, the device has an advantage that an existing water supply pipe can be used as it is, but the work of disposing a cooling pipe along the water supply pipe and covering the cooling pipe with a heat insulating material is complicated. In a large-scale chicken raising facility, cage rows in which a plurality of cages are arranged in parallel in the horizontal direction are stacked in a plurality of stages and a plurality of rows are arranged in parallel, so that the number of water supply pipes is considerably large and the respective lengths are also long. Therefore, the work of disposing the cooling pipes along all the water supply pipes and covering both with the heat insulating member has to be a relatively large-scale work.

[ Prior Art document ]

[ patent literature ] A

[ patent document 1 ] Japanese patent laid-open No. 2005-237241

[ patent document 2 ] Japanese patent laid-open No. 2009-296943

[ patent document 3 ] Japanese patent laid-open No. 2015-80415

Disclosure of Invention

Problems to be solved by the invention

[ problem to be solved by the invention ]

In view of the above circumstances, the present invention has been made to provide a water supply system capable of suppressing an increase in water temperature due to retention of water in a water supply pipe through which drinking water of chickens raised in a cage flows, with a simple configuration.

Means for solving the problems

In order to solve the above problems, the present invention provides a water supply system for taking water from chickens housed in a cage and raised in a chicken house, comprising a water supply pipe, a water feeder, a pressure reducing device, an opening/closing valve, a cleaning panel, a water storage tank, and a pump,

the water supply pipe is arranged along a cage row in which a plurality of the cages are arranged in parallel in a horizontal direction,

the water feeder is provided with a plurality of water supply pipes, water in the water supply pipes is discharged by pushing up the valve bodies,

a pressure reducing device connected to an upstream end of the water supply pipe for reducing a water pressure of water supplied from a water supply source and then allowing the water to flow into the water supply pipe,

the open/close valve is connected with the downstream end of the water supply pipe and switched to any one of a closing mode for closing the downstream end of the water supply pipe and a discharge mode for communicating the downstream end of the water supply pipe with the discharge pipe,

the cleaning panel comprises a panel material having air permeability and covering an air inlet of the chicken house, and a supply pipe for supplying water to the upper surface of the panel material, wherein the cleaning panel cools the air passing through the air inlet by the panel material, the panel material is a panel material which is changed into a low temperature by the vaporization heat of the water soaked in the panel material,

the water storage tank is arranged below the cleaning panel and receives water flowing down in the panel material,

the pump conveys the water in the water storage tank to the supply pipe,

the discharge pipe is a discharge pipe for guiding the water discharged from the water supply pipe to the water storage tank.

The water supply system of this configuration is a new configuration in which a clean panel used for cooling air taken from the outside during ventilation in a large-scale chicken raising facility is incorporated into a system for supplying water to chickens.

When the water is heated by staying in the water supply pipe, the on-off valve is opened to switch from the closing mode to the discharge mode. Thus, the water in the water supply pipe flows out to the discharge pipe, and fresh water which has not been heated is supplied from the water supply source to the water supply pipe. Therefore, even in a period of high temperature such as summer, the chicken can take the water without heating.

If the water discharged from the water supply pipe is simply discarded, it is wasted in terms of resources and cost. In contrast, in the present configuration, the discharged water is guided to the water storage tank below the clean panel, and is added to the recycled water as the water supplied to the panel material. Therefore, the water discharged from the water supply pipe can be used without waste.

The cleaning panel is a device which is expected to be provided in a large chicken raising facility. In addition, when the temperature is high, such as when the water in the water supply pipe becomes hot, the cleaning panel is used for ventilation of the chicken raising facility, and the pump for conveying water from the water storage tank to the water supply pipe is also operated. Therefore, the water supply system of the present configuration is introduced, and therefore, the system has a small number of configurations for new addition to conventional facilities, and can suppress the increase in water temperature caused by the retention of water in the water supply pipe, as a simple configuration, without changing the system.

In addition, in the discharge mode, the water supplied to the water supply pipe also passes through the pressure reducing device to reduce the water pressure. Therefore, even in the discharge mode, the water pressure in the water supply pipe does not increase, and there is no possibility that water supply to the chickens is hindered by the water supply device. Further, since the water whose pressure is reduced by the pressure reducing device is sent to the water storage tank through the discharge pipe, the amount of water sent per unit time can be suppressed, and a situation where a large amount of water is continuously sent to the water storage tank can be avoided.

The water supply system of the invention, on the basis of the structure,

the water storage tank is provided with a constant water level valve for keeping the water level to be constant,

the discharge pipe does not have a portion whose height increases from the upstream end to the downstream end thereof, and the water level of the water storage tank kept constant by the constant water level valve is set lower than the height of the downstream end of the discharge pipe.

In this configuration, power of a pump or the like for transporting water discharged from the water supply pipe to the water storage tank is not required, and water can be easily transported to the water storage tank only by the action of the water pressure and gravity reduced by the pressure reducing device.

[ Effect of the invention ]

As described above, according to the present invention, it is possible to provide a water supply system capable of suppressing an increase in the temperature of water due to retention of water in a water supply pipe through which drinking water of chickens raised in a cage flows, with a simple configuration.

Drawings

Fig. 1 is a schematic configuration diagram of a chicken house including a water supply system according to an embodiment of the present invention.

Fig. 2 is an enlarged view ofbase:Sub>A-base:Sub>A range in fig. 1.

Fig. 3 is an enlarged view of the range B-B in fig. 1.

Fig. 4 (a) is an enlarged view of the range C-C in fig. 1, and fig. 4 (b) is a longitudinal sectional view of the cleaning panel.

Fig. 5 is a perspective view of the cleaning panel of fig. 4 (a) and (b).

Fig. 6 is an enlarged view ofbase:Sub>A range corresponding to thebase:Sub>A-base:Sub>A range in the case wherebase:Sub>A pressure reducing device different from the water supply system of fig. 1 is used.

Detailed Description

To implement the mode of the invention

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. First, the configuration of the chicken coop 10 including the water supply system of the present embodiment will be described. The chicken house 10 is a rectangular parallelepiped building surrounded by four walls, and has an elongated shape, and a length between a pair of opposing

walls

11 and 12 among the four walls is 50 to 200 meters, and a length between the other pair of walls 13 is 5 to 40 meters, which is shorter than the length.

In the internal space of the chicken house 10, a plurality of cage rows 70 are housed, in which a plurality of cages 60 are arranged in series in a horizontal direction. The cage rows 70 are stacked in multiple layers, and multiple rows are arranged in parallel in a direction orthogonal to the direction in which the cage rows 70 extend. The cage row 70 extends in the longitudinal direction of the chicken house 10 connecting the

walls

11 and 12.

An air inlet 21 and an air outlet 22 are provided in the pair of

walls

11 and 12 facing each other. The air inlet 21 and the air outlet 22 are each provided with an area larger than 1/2 of the entire area of the

walls

11 and 12. A side wall air inlet (not shown) is provided in the upper portion of each of the other pair of walls 13 parallel to the cage row 70.

A plurality of large-sized exhaust fans 22f are vertically and horizontally mounted on the exhaust port 22. By operating the exhaust fan 22f, air is forcibly discharged from the exhaust port 22, the internal space of the chicken house 10 is brought into a negative pressure, and air is taken in from the outside through at least one of the air inlet 21 and the sidewall air inlet, whereby ventilation of the inside of the chicken house 10 can be performed.

More specifically, when the outside air temperature is low, such as in winter, the air inlet 21 is closed, and ventilation is performed in a first mode in which outside air is taken in through the side wall air inlet. The side wall air inlet is provided with a device (not shown) for adjusting the opening/closing and the opening degree thereof, and the opening/closing and the opening degree of the side wall air inlet are adjusted in accordance with the outside air temperature.

On the other hand, ventilation is performed in the second mode in which air is taken in from the air inlet 21 when the outside air temperature is high, such as in summer. In the second mode, in order to allow air to flow straight between the opposing

walls

11, 12, the air flow is high speed, and ventilation can be performed while cooling the internal space with outside air at a lower temperature than the temperature inside the chicken coop 10. Ventilation can also be performed in a third mode in which air is taken in through both the air inlet 21 and the sidewall air inlet.

The air inlet 21 is covered with the panel material 35 of the cleaning panel 30, and the air flowing into the henhouse 10 through the air inlet 21 is cooled by the panel material 35. Specifically, as shown in fig. 5 and 4 (b), the cleaning panel 30 is configured to hold a plurality of panel materials 35 by a pair of side frames 31, an upper frame 32 connecting upper ends of the pair of side frames 31, and a lower frame 33 connecting lower ends of the pair of side frames 31. The upper frame 32 is fixed to the wall 11 above the air inlet 21, and the lower frame 33 is fixed to the wall 11 below the air inlet 21.

The upper frame 32 holds a supply pipe 36 for supplying water to the upper surface of the panel material 35, and the supply pipe 36 is inserted into a space between the upper frame 32 and the panel material 35 through a hole 31h provided through the side frame 31. The supply pipe 36 has a plurality of small hole portions (not shown) formed through the circumferential surface of a portion located inside the upper frame 32.

The lower frame 33 includes a net-like support member 33c above the bottom surface 33b thereof, and a panel material 35 is placed thereon. Therefore, a space S in the form of a gutter is formed between the lower end of the panel material 35 and the bottom surface 33b of the lower frame 33. A hole 33h is provided through the bottom surface 33b of the lower frame 33, and the pipe 51 connected thereto extends downward.

The panel material 35 is formed of a paper material having good water absorbency and water retentivity and having resistance to moisture. Such a paper material is formed into a repeating shape of a small wave shape, and a plurality of paper materials are stacked while shifting the wave shape, thereby increasing the surface area and providing air permeability.

In the cleaning panel 30 having the above-described configuration, if water is supplied to the supply pipe 36, the water flowing out of the small holes on the circumferential surface of the supply pipe 36 drops onto the upper surface of the panel material 35, and the panel material 35 is wetted by the penetration of the water. When the water evaporates, the heat of vaporization is removed, and the panel material 35 becomes a low temperature. Thus, the air flowing into the chicken house 10 through the air inlet 21 is cooled while passing through the panel material 35.

The water flowing down through the panel material 35 without being vaporized is collected by the space S in the form of a gutter through the net-like support member 33c and is discharged to the outside through the pipe 51. A water storage tank 40 is provided below the pipe 51, and water flowing down the pipe 51 is stored therein. The stored water is fed to the supply pipe 36 through the pipe 52 by the operation of the pump P, and is dropped again onto the upper surface of the panel material 35. The water flowing down through the panel material 35 is collected in the space S in the form of a gutter and is circulated in the same manner thereafter.

In the water storage tank 40, water is supplied from the outside through a pipe 53 in order to supplement the amount of water that is vaporized and diffused. Here, the case where the valve 41 is opened and closed by the displacement of the float 42 according to the water level of the reservoir tank 40 to maintain the water level constant is exemplified. The valve 41 having the float 42 in the present embodiment corresponds to the "constant water level valve" in the present invention.

Next, the water supply system of the present embodiment will be explained. As described above, the water supply system is a system for supplying water to the chickens, in which the cleaning panel 30 used in ventilation of the chicken house 10 is incorporated. The water supply system includes a pipe structure including a water supply pipe 3 having a water feeder 4, an upstream pipe 1, and a discharge pipe 6. This pipe structure further includes a pressure reducing valve 2 provided between the upstream pipe 1 and the water supply pipe 3, and an opening and closing valve 5 provided between the water supply pipe 3 and the discharge pipe 6.

The water supply system includes a cleaning panel 30, a supply pipe 36, a water storage tank 40, and a pump P, wherein the cleaning panel 30 has a panel member 35 covering the air inlet 21 of the henhouse 10, the supply pipe 36 supplies water to the panel member 35, the water storage tank 40 is disposed below the cleaning panel 30, and the pump P delivers the water in the water storage tank 40 to the supply pipe 36.

More specifically, the water supply pipe 3 is disposed along each cage row 70 in the longitudinal direction. On each water supply pipe 3, a plurality of water feeders 4 are provided in the same number per cage 60. Each water feeder 4 includes a valve body 4b that moves up and down with respect to the main body 4a, and if the valve body 4b is pushed up by the chicken mouth, the flow path is opened and water flows down.

Further, a drain tank 9 which opens upward is disposed below the water supply pipe 3 in parallel with the water supply pipe 3. The drain tank 9 is configured to receive water scattered or scattered when the chicken operates the water feeder 4 to drink water, and is configured to prevent a living space of the chicken or a dung removing belt (not shown) from being wetted.

The upstream pipe 1 is a pipe for supplying water from a water supply source such as a water supply channel to the water supply pipe 3. The upstream pipe 1 is branched into the same number as the water supply pipe 3, and then connected to the upstream end of the water supply pipe 3 via a pressure reducing valve 2 as a pressure reducing device. The pressure reducing valve 2 reduces the pressure of the water supplied from the water supply source and flows into the water supply pipe 3. Thus, when the water feeder 4 is operated by the chicken, the water is prevented from being vigorously sprayed out to hinder the drinking of the chicken.

A water pressure indicator 7 for confirming the pressure of the water flowing into the water supply pipe 3 is attached to the pressure reducing valve 2. Here, the water pressure indicator 7 includes a transparent tube 7p provided upright upward and a float 7f accommodated in the tube 7p, and a simple structure capable of confirming the water pressure in the water supply tube 3 by the height of the float 7f is exemplified. A water pressure indicator 7 having the same structure is also attached to the vicinity of the downstream end of the water supply tube 3.

The downstream ends of the water supply pipes 3 are connected to discharge pipes 6 through opening/closing valves 5, respectively. In the present embodiment, a case where a plurality of water supply pipes 3 and 1 discharge pipe 6, which are respectively arranged along the cage rows 70 stacked in a plurality of stages, are connected is exemplified. The discharge pipe 6 descends while being sequentially connected to the downstream ends of the water supply pipes 3 in the lower tier from the downstream end of the uppermost water supply pipe 3, and then extends at a single height in the vicinity of the floor surface of the chicken house 10 to reach above the water storage tank 40 through the wall 11. That is, the discharge pipe 6 does not have a portion in which the height increases from the upstream end toward the downstream end thereof. The water level of the reservoir 40, which is kept constant by the valve 41 having the float 42, is set lower than the downstream end of the discharge pipe 6.

In the water supply system having the above configuration, in the closed mode in which the downstream end of the water supply pipe 3 is closed by closing the on-off valve 5, the water of the amount flowing out of the water feeder 4 by the chicken operation is supplied from the upstream pipe 1 to the water supply pipe 3 through the pressure reducing valve 2. When the water is not easily heated even if it stays in the water supply pipe 3 in a low temperature period, the water is supplied to the chickens in the closed mode.

Since the water pressure indicator 7 is attached to the water supply pipe 3, it can be confirmed whether or not the water pressure in the water supply pipe 3 is a water pressure suitable for drinking water for chickens. Further, the water pressure indicator 7 is attached to the water supply pipe 3 at two positions near the upstream end and the downstream end, and therefore, even if a pipe is clogged or water leaks in the middle of the water supply pipe 3, it can be quickly detected.

When the water is heated due to the retention in the water supply pipe 3, the opening/closing valve 5 is opened as the discharge mode. The mode may be switched from the closing mode to the discharge mode intermittently, or may be continuously set as the discharge mode. In the discharge mode, water flows out from the water supply pipe 3 to the discharge pipe 6, and fresh water that has not been warmed up is supplied from the water supply source to the water supply pipe 3. Therefore, even in a period of high temperature such as summer, the chicken can take the water without heating.

If the water discharged from the water supply pipe 3 is discarded, it is wasted as a resource and in view of cost. In contrast, in the present embodiment, the water flowing out from the water supply pipe 3 to the discharge pipe 6 flows through the discharge pipe 6 to the downstream end, and is guided to the water storage tank 40 below the cleaning panel 30. Since the water in the water storage tank 40 is recycled as the water to be supplied to the panel member 35, the water discharged from the water supply pipe 3 can be used without waste.

The cleaning panel 30 is a device that a large chicken facility desires to have. In addition, when the air temperature is high, such that the water in the water supply pipe 3 becomes hot, the cleaning panel 30 is used for ventilation of the chicken coop 10, and the pump P for supplying water from the water storage tank 40 to the supply pipe 36 is also operated. Therefore, the new additional structure required for introducing the water supply system of the present embodiment is to the extent that the on-off valve 5 and the discharge pipe 6 are required, and the increase in the water temperature due to the retention of water in the water supply pipe 3 can be suppressed without changing the system to a simple structure while effectively utilizing the existing equipment.

In addition, in the discharge mode, the water supplied to the water supply pipe 3 is also water whose pressure is reduced by the pressure reducing valve 2, and the pressure of the water in the water supply pipe 3 is not increased. Therefore, even in the discharge mode, the chickens can take in the water flowing through the water supply pipe 3 through the water feeder 4 without any trouble. Further, since the water whose pressure has been reduced by the pressure reducing valve 2 is sent to the reservoir tank 40 through the discharge pipe 6, the amount of water sent per unit time can be controlled, a situation where a large amount of water is continuously sent to the reservoir tank 40 can be avoided, and balance with the amount of water sent from the reservoir tank 40 to the supply pipe 36 can be easily obtained.

Further, the discharge pipe 6 does not have a portion where the height increases from the upstream end to the downstream end thereof, and the water level of the reservoir tank 40 kept constant is set lower than the height of the downstream end of the discharge pipe 6. Therefore, power of a pump or the like for transferring the water discharged from the water supply pipe 3 to the water storage tank 40 is not required, and the water can be easily transferred to the water storage tank 40 only by the action of the water pressure and the gravity reduced by the pressure reducing valve 2.

While the present invention has been described above by way of examples of suitable embodiments, the present invention is not limited to the above-described embodiments, and various modifications and design changes can be made without departing from the scope of the present invention.

For example, the on-off valve 5 that switches between the closed mode and the discharge mode may be manually opened or closed, or may be opened or closed by a control device based on detection of the water temperature or air temperature in the water supply pipe 3.

The water pressure indicator 7 is not limited to the above-described configuration as long as it is configured to know the water pressure in the water supply pipe 3. The constant water level valve is not limited to the above-described structure as long as it can keep the water level in the reservoir tank 40 constant.

Further, although the pressure reducing valve 2 is exemplified as the pressure reducing device in the above description, the pressure reducing valve 2 is not limited as long as it is a structure capable of flowing water supplied from a water supply source into the water supply pipe 3 after reducing the water pressure. For example, as shown in fig. 6, a water reservoir 80 can be used as the pressure reducing means. The reservoir 80 is a container open to the atmosphere, and is connected to the downstream end of each of the upstream pipes 1 branching from the water supply pipe 3 by the same number. The downstream ends of the branched upstream pipes 1 extend through the upper part of the peripheral wall of the reservoir 80 to the inside, and serve as water supply ports 81. The water supply port 81 is provided with a valve 85, and the water level is kept constant by opening and closing the valve 85 by displacement of a float 86 according to the water level. An outlet pipe 88 is connected to the lower portion of the water reservoir 80. The outflow pipe 88 is located higher than the water supply pipe 3, and is connected to the upstream end of the water supply pipe 3 by a vertically extending connecting pipe 89.

According to this structure, the water supplied from the water supply source through the upstream pipe 1 is temporarily stored in the reservoir 80 and disconnected from the water supply source. If water flows out from the water supply unit 4 for drinking water from chickens, the water is supplied from the reservoir 80 to the water supply tube 3 in an amount corresponding to the drinking water, and a water pressure corresponding to a difference between the water level of the reservoir 80 and the height of the water supply tube 3 is applied to the supplied water. Therefore, water having a pressure lower than the pressure of the water supplied from the water supply source can be caused to flow into the water supply pipe 3. Further, since the pressure of the water flowing into the water supply pipe 3 can be maintained at a desired value by the difference between the water level inside the reservoir 80 and the height of the water supply pipe 3, and the water level inside the reservoir 80 is kept constant by the valve 85 and the float 86, the above-described water pressure indicator 7 may not be provided in the vicinity of the upstream end of the water supply pipe 3. When the temperature is high and the water in the water supply pipe 3 is heated in summer, the water stored in the reservoir 80 is also discharged by opening the on-off valve 5 as the discharge mode, and fresh water is replenished from the water supply source.

Claims

1. A water supply system for taking water from chickens housed in a cage and raised in a chicken house, comprising a water supply pipe, a water feeder, a pressure reducing device, an opening/closing valve, a cleaning panel, a water storage tank, and a pump,

the opening/closing valve is connected to a downstream end of the water supply pipe and is switched to either a closing mode for closing the downstream end of the water supply pipe or a discharge mode for communicating the downstream end of the water supply pipe with a discharge pipe,

the pump conveys the water in the water storage tank to the supply pipe,

the discharge pipe is a discharge pipe for guiding the water discharged from the water supply pipe to the water storage tank,

the discharge pipe extends along the floor surface of the henhouse at a single height to the water storage tank at a downstream side of the connection part with the water supply pipe,

a pump for conveying the water discharged from the water supply pipe to the water storage tank is not provided; the water supply pipe is connected to the water storage tank through a pressure reducing device, and the water storage tank is provided with a constant water level valve for setting the water level of the water storage tank lower than the downstream end of the discharge pipe.