JPS585120A - Water sprinkler for growing seedling - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water sprinkler that automates the watering operation when raising seedlings in a vinyl greenhouse.

In conventional water sprinklers, a solenoid valve for water supply operates according to the time measured by the device, but after the water supply operation has started, the direction of water spouting from the hole in the sprinkler tube is constant, and the water spouting is constant. Since the water reaches its maximum point all at once and continues to do so, uneven watering occurs over the entire area for raising seedlings, and when the cultivation bed is picked up, germinated seeds are exposed, resulting in unsuitable watering for raising seedlings.

An object of the present invention is to improve this drawback and provide a water sprinkler that sprays water evenly within a predetermined area.

During watering work, the solenoid valve continues to open and close repeatedly at short time intervals, and the watering tube expands and contracts due to fluctuations in water pressure in the water supply pipe. This is what I did.

Next, the configuration of the present invention will be explained with reference to illustrated embodiments.

In FIG. 1, 1 is a main body case of the timer, 4 is a water faucet, 5 is a water supply hose, 6 is a water supply hose, and 16 is a water spray tube.

As shown in FIG. 3, inside the main body case 1, a timer 2 for setting the time for watering work and a solenoid valve 3 for cutting off water supply are built-in.

The timer 2 displays an electric motor 7 serving as a driving source, a gear 8 for making time, and the time, and shows a time t when energization starts and a time when energization ends 1.
．． [Insert the set pin L2 into the setting hole 11 of the dial 9, and press the micro switch 1.]
Attachment is a device that opens and closes the energized circuit by contacting 3. When the time passes, the bottle 12a separates from the microswitch 13 due to the rotation of the dial 9, but the parallel contacts of the microswitch are closed by the energization of the relay 14 until the watering end set bottle 12b comes into contact. Each time the microswitch 13 is energized by closing the microswitch 14, the parallel contacts are alternately switched from open to closed and from closed to open.

A set lever 15 is provided to control energization regardless of the set pin 12.

The gear 8 is an insulator, and a semicircular contact plate 21 made of a conductive material is adhered to its flat surface. During rotation of the gear, the conductive portion and the insulating portion alternately contact the fixed contact piece 22. There are two contact pieces 22, which constitute opening/closing contacts of the excitation circuit of the solenoid valve 3. The gear 8 rotates once every two minutes, and the solenoid valve 3 repeats opening and closing at one minute intervals. This repetition continues during the watering crop.

In order to evenly sprinkle water over the entire area of the seedling box or cultivation bed, a large number of water sprinkling holes 17 are provided in the water sprinkling tube 16, which is an elastic flat hollow member, and each spout is directed in a different direction. . These water holes open under constant water pressure, and the water falls in the form of a mist. The water sprinkling tube 16 has a double structure as shown in Fig. 4, and when the water pressure in the main pipe 18 exceeds a certain value, the hole 19 opens and flows into the sub pipe 20. When the water pressure in the sub pipe reaches a certain value, the water sprinkling hole opens. 17 opens.

In this way, the water sprinkling tube regulates the tap water pressure and smoothes the water pressure applied to each water sprinkling hole 17.

It smooths out the force of the water that gushes out, expands to absorb tap water pressure, and contracts when the water supply is cut off. Therefore, when watering starts, the force of the spray gradually increases, and when watering ends, the force of the spray gradually decreases.

In addition, due to the continuation of the intermittent opening and closing of the solenoid valve 3, an intermittent water flow is generated in the water spray tube 16, and due to the expansion and contraction force of the water spray tube 16, the jet force that gradually changes becomes twice per minute, and is distributed evenly. You can sprinkle water without having to worry about it.

According to the above, the water sprinkler of the present invention has the following effects.

1. Since the ejected water droplets fall in the same place, the germinated seeds will not be exposed when you pick the cultivation bed.

2. The force of the spray gradually increases to the maximum width due to tap water pressure, and it reciprocates, so you can evenly water the seedling box and the cultivation bed where germination has occurred.

3. When watering starts and ends, residual water does not drip and there is no need to pick up the soil.

4. Since the water spray tube contracts when the work is finished, the remaining water will not become hot due to sunlight and fall. Therefore, it does not inhibit the growth of seedlings.

[Brief explanation of the drawing]

Figure 1 is a plan view of the water sprinkler of the present invention installed on a cultivation bed, Figure 2 is a front view of the main body case of the water sprinkler of the present invention, Figure 3 is a vertical sectional view of the main body case, and Figure 4 is a water sprinkler. A cross-sectional view of the tube, No. 5 is a plan view of a time gear provided with a contact plate for intermittent opening/closing of a solenoid valve. DESCRIPTION OF SYMBOLS 1... Main body case, 2... Clock, 3... Solenoid valve, 4... Water faucet, 5... Water supply hose, 6... Water supply hose, 7... Electric motor, 8... ...Gear, 9...Dial, 10...Adjustment knob, 11...Dial hole, 1
2...Set pin, 13...Micro switch, 1
4...Relay, 15...Set lever 116...
Watering tube, 17... Watering hole, 18... Main pipe, 1
9... Hole, 20... Sub pipe, 21... Contact plate, 22
...Contact piece. Part 1 Taku 20 Episode 3 Day 4 Day 5

Claims (1)

[Claims] 1. A water sprinkling tube with multiple nozzle holes along its length is formed into a flat shape made of elastic material, and is connected to the output circuit of a timer that controls water sprinkling work by repeatedly opening and closing at short intervals during water sprinkling work. A water sprinkler for raising seedlings characterized by a contact point.