JPH0513180Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a water supply device for livestock farming such as pig farming that is attached to a water supply pipe.

(Prior art) Conventionally, this water supply device for breeding livestock such as pig farming has a proximal end screwed onto a water supply pipe, and an operating rod protruding from the distal end that is operated by livestock. By tilting or pushing the valve, the on-off valve opens and water flows out from the outlet. Normally, the on-off valve is biased in the direction of closing the outflow port by a spring between it and a cap having a water passage hole provided on the proximal end side of the water supply device body, thereby blocking the outflow hole. . Therefore, water flows out through the water hole in the cap when the on-off valve opens, but as the water pressure changes, the flow rate through the flow hole changes, and in conventional water dispensers, the flow rate is kept constant. I couldn't keep it that way.

(Problems to be solved by the invention) In conventional breeding systems for pigs, etc., where pigs are allowed to freely drink any amount of water, it is not necessary for the flow rate of the water dispenser to be constant. However, constant flow water supply has become indispensable in the recently proposed quantitative and constant rate feeding method of water and food, which increases feeding efficiency by supplying water and food in an appropriate balance.

This invention was devised in response to the above-mentioned demand, and the purpose of this invention is to propose a water dispenser for livestock that can always drain a constant amount of water even when water pressure fluctuates.

(Means for solving the problem) The water dispenser for livestock farming of the present invention that achieves the above purpose is as follows:
Utilizing the elastic deformation of the valve due to pressure, we have created a donut-shaped constant flow valve made of an elastic material so that the cross section of the valve hole becomes smaller in diameter when water pressure is high and larger in diameter when water pressure is low. , has a configuration characterized in that a constant flow valve device, which is fitted into the inner bottom of a concave cap body with a water passage hole provided in the center, is attached to the inside of the proximal end of the water supply device body. There is.

In addition, to make the water dispenser more compact,
The constant flow valve device is configured to also serve as a spring retainer for the valve operating rod. Furthermore, a strainer was provided in the constant flow valve device.

(Function) Since the water pressure from the water supply pipe acts on the front wall of the constant flow valve, the valve formed of an elastic body deforms in accordance with the water pressure, and the cross-sectional area of the valve hole changes accordingly. The change in the cross-sectional area of the valve hole is proportional to the water pressure, and the higher the water pressure, the smaller the cross-sectional area of the valve hole becomes.
The amount of water that passes through the water hole of a constant flow valve is the product of the cross-sectional area of the water hole and the flow rate, and the flow speed is proportional to the water pressure, but with this constant flow valve, as the water pressure increases, the flow rate of the water through the valve hole increases in proportion to the water pressure. The cross-sectional area decreases, and conversely, when the water pressure becomes weaker, the cross-sectional area increases, so a constant flow rate can always be maintained even if the water pressure changes.

Therefore, the amount of water that passes through the constant flow valve device and flows out from the on-off valve is always constant, making it possible to provide fixed amounts of water in pig farming, etc., and to effectively carry out quantitative and fixed rate feeding methods for water and feed. can.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

In the figure, reference numeral 1 denotes a water supply main body formed into a cylindrical body, and a screw 2 for screwing into a water supply pipe is formed on the outer circumference of the base end, and an outflow hole 3 into which an operating rod 7 is loosely fitted is formed inside. A partition wall 4 is formed, and an internal thread for screwing a constant flow valve device is formed on the proximal end side. The actuating rod 7 has an actuating part 8 whose tip protrudes forward from the water dispenser main body and is activated when the livestock drinks water, and has a base end that has a diameter slightly smaller than the inner diameter of the water dispenser main body and covers the outflow hole. It has an on-off valve 9 of the same size. Reference numeral 11 denotes an O-ring interposed between the on-off valve 9 and the partition wall 4 and serving as a valve seat.

12 is a constant flow valve device, and as shown in the enlarged views of FIGS. 2 and 3, a water passage hole 1 is provided at the tip.
3, and a hollow cap body 15 having a screw 14 formed on the outer periphery of the proximal end to be screwed into the inner screw of the water supply main body, and a hollow cap body 15 formed of an elastic material such as rubber to be fitted inside the cap body 15. A donut-shaped constant flow valve 16, a ring-shaped valve holder 17 for positioning the constant flow valve inside the cap, and a mesh strainer 1.
It consists of 8. The constant flow valve 16 has a variable valve hole 20 formed in the center, and the tip of the valve hole 20 is enlarged in a tapered shape to form a step with the tip surface, making it easy to move around the variable valve hole. It is easy to cause elastic deformation. A spring 21 is interposed between the on-off valve 9 of the operating rod and the constant flow valve device 12, and urges the on-off valve 9 to be pressed against the inner surface of the partition wall 4 via the O-ring 11. .

With the water supply device having the above configuration, fixed amount water supply is performed as follows. Water is constant flow valve variable valve hole 20
However, since spring pressure and water pressure act on the proximal side of the on-off valve, under normal conditions, the on-off valve, O-ring, and inner surface of the partition wall come into close contact, blocking the outflow path. , water will not flow out. When livestock now drink water by tilting the operating part of the operating rod against spring pressure and water pressure, the O-ring 11
A gap is created between the on-off valve 9 and the on-off valve 9, and an outflow path is formed between the outer periphery of the on-off valve - the gap between the on-off valve and the O-ring - the outflow port 3, and water flows out from the tip of the water supply device.

At this time, the water pressure from the water supply pipe acts on the front wall of the constant flow valve, but since the valve is an elastic body and the area around the variable valve hole is formed to easily deform inward, the water pressure pushes it. As a result, the variable valve hole is deformed as shown by the broken line in FIG. 2, and the cross-sectional area of the variable valve hole becomes narrower. The change in the cross-sectional area of the variable valve hole is proportional to the water pressure, and the higher the water pressure is, the smaller the cross-sectional area of the variable valve hole becomes. Therefore, even if the water pressure changes, a constant flow rate can be maintained at all times, making it possible to supply a constant flow in pig farming.

FIG. 4 shows another embodiment of the present invention, which is applied to a push-spring type water dispenser.

In the figure, 25 is a pusher, 22 is an on-off valve screwed onto the base end of the pusher, and a spring 29 is provided between the pusher 25 and the partition wall 28 of the water dispenser main body 27.
The on-off valve is biased to close the outflow hole 30 by interposing the on-off valve. 31 is a water discharge hole formed in the main body of the water supply device, and when a pig or the like presses the pusher spatula, the outflow hole 30 opens, and the water passes through the outflow hole and flows into the small diameter space of the pusher spatula. Water is vigorously discharged to the outside from the discharge hole. Reference numeral 32 denotes a constant flow valve device, in which a constant flow valve 33 made of an elastic body similar to that of the previous embodiment is provided on the proximal end side of the cap body 34, and a strainer 35 is also provided.

The water supply device of each embodiment configured as described above is
For example, as shown in Figure 5, quantitative analysis and
It is used by screwing its proximal end onto a water supply pipe 42 that is installed to supply water to a feed tank 41 of a feeder 40 that performs a constant rate feeding method. In the feeder shown in the figure, a fixed amount of feed in the hopper 42 is measured in the measuring chamber 43, and when the pig pushes up the push-up piece 45, the feed metering valve 44 opens, and the feed is constantly fed from the measuring chamber 43 into the feed tank. It is designed to fall by a certain amount. The push-up piece 45 is integrated with an actuation rod 46 that pushes up the actuation rod of the water dispenser 47, and by pushing up the push-up piece 45, a fixed amount of bait is dispensed from the bait measuring chamber and a fixed amount is dispensed from the water dispenser. The amount of water in the feed tank 41
to fall. Therefore, the mixing ratio of food and water in the feed tank is always constant, making fixed-rate feeding possible.

Although two embodiments of the present invention have been described above, it goes without saying that the present invention is not limited to these embodiments and can be applied to various types of water dispensers.
For example, in the above embodiment, the water dispenser is of a type in which water flows out when livestock touches the operating rod, but it may also be a water dispenser of a type in which a solenoid valve is opened and closed by a timer to supply water. Applicable.

(Effects) The present invention, configured as described above, provides the following special effects.

The amount of water that passes through the constant flow valve device and flows out from the on-off valve is always constant, making it possible to supply water at a constant rate in pig farming, etc., and to effectively carry out fixed-rate feeding of water and feed. Furthermore, since the constant flow rate regulating valve device is built into the water supply device, it can be configured compactly without being bulky.

Furthermore, according to the second aspect of the present invention, since the constant flow valve device also serves as a spring holder, it can be easily incorporated into a conventional water dispenser having a spring inside the water dispenser main body.

Moreover, according to the configuration of claim 3, a strainer is incorporated in the constant flow valve device, so that water can be purified and a fixed amount can be obtained more effectively.

[Brief explanation of drawings]

The drawings show an embodiment of the livestock water supply device according to the present invention, and FIG. 1 is a side sectional view thereof, FIG. 2 is a side sectional view of a constant flow valve device, FIG. 3 is a front view thereof, and FIG. 4 is a side sectional view thereof. FIG. 5 is a side sectional view of another embodiment of the feeding device incorporating the water dispenser. 1, 27...Water supply main body, 3, 30... Outflow hole, 4, 28... Bulkhead, 7... Operating rod, 9, 26
...Opening/closing valve, 11...O ring, 12, 32...
Constant flow valve device, 13...Water hole, 15...Cap body, 16, 33...Constant flow valve, 17...Valve holder, 20...Variable valve hole, 25...Press bell, 1
8,35...Strainer.

Claims (1)

[Claims for Utility Model Registration] 1. Utilizing the elastic deformation of the valve due to pressure, the valve hole is formed of an elastic material so that the cross section of the valve hole becomes smaller in diameter when the water pressure is high and becomes larger in diameter when the water pressure is low. A constant flow valve device, in which a donut-shaped constant flow valve is fitted into the inner bottom of a concave cap body with a water passage hole in the center, is attached to the inside of the proximal end of the water dispenser body. A water dispenser for livestock that features: 2. The livestock water supply device according to claim 1, wherein the constant flow valve device also serves as a spring retainer for a valve operating rod. 3. The livestock water supply device according to claim 1, wherein the constant flow valve device is provided with a strainer.