JPH1132651A - Non-pressure spray pipe and spray system adopting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide both a non-pressure spray pipe and a spray system adopting the same in which a spray solution sent under pressure through a supply hose by a force feed pump is made into a nonpressure state and the spray solution in the non-pressure state is slowly discharged and sprayed by empty weight. SOLUTION: This non-pressure spray pipe is constituted of a concentric double pipe comprising an inner pipe (a) provided with spray holes 5 in line, an outer tube (b) equipped with vertical outlet holes 6 and a storage chamber 3 openable to the air between the inner and the outer pipes. The spray system hangs the non-pressure spray pipe on a supporting arm frame installed on a traveling truck laid on a traveling rail horizontally attached to the fixed position of a greenhouse so as to travel and reciprocate the truck. A spray solution sent under pressure through a supply hose by a force feed pump is sprayed from the non-pressure spray pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-pressurized spraying pipe used for spraying a spraying liquid such as water, a chemical solution or a liquid fertilizer for watering, controlling and the like necessary for cultivation of various plants. It is related to the spraying system adopted.

[0002]

2. Description of the Related Art In greenhouse cultivation of various plants,
Various spraying liquids such as water, chemical liquid or liquid fertilizer are sprayed,
Usually, the spraying is performed by pumping the spraying liquid through a feed hose of a spraying system including a pumping pump and spraying the sprayed liquid from a terminal spraying pipe.

[0003]

The spraying liquid is continuously jetted at a predetermined required pressure, and the droplets violently collide with the plant, which has an undesirable effect on spores, young shoots or young leaves. In which case,
It is necessary to install a spray pipe at a place sufficiently distant from the plant, adjust the pumping pressure, or devise the spray direction.

[0004] The inventor has conducted intensive research to improve this,
In the present invention, the spray liquid pumped through the feed hose by the pressure pump becomes a non-pressurized state in the spray pipe, and the spray liquid in the non-pressurized state is simply weightless and quiet to the plant. It is made to hang down.

[0005]

According to the present invention, there is provided a non-pressurized spray pipe comprising an inner pipe a having jet holes 5 arranged therein and an outer pipe b having drop holes 6 arranged therein. In addition, a concentric double tube body having a storage chamber 3 which can be opened to the atmosphere is formed.

In order to maintain the inner tube a and the outer tube b concentrically, it is simple and reliable to use a tubular or disc-shaped outer tube open end closing member c, c between the two tubes. It is preferable to use the drain / air pipe 4 or 8 for opening the storage chamber 3 to the atmosphere. Further, it is appropriate that the ejection hole 5 is formed on the upper peripheral wall of the inner tube a and the hanging hole 6 is formed on the lower peripheral wall of the outer tube b.

In the spraying system according to the present invention, a traveling rail 9 is horizontally installed at a required position of a greenhouse 10, and a supporting arm frame 14 is installed on a traveling carriage 11 mounted on the traveling rail 9 so as to be reciprocally movable. The non-pressurized spray pipe having the above configuration is suspended from the arm frame 14, and the spray liquid pumped by the feed pump 17 through the feed hose 19 is sprayed from the non-pressurized spray pipe.

[0008]

1 and 2 show a first embodiment of a pressureless spray pipe according to the present invention. The pressureless spray pipe A according to the first embodiment is formed by forming a double pipe body with an inner pipe a and an outer pipe b made of synthetic resin.

Reference numerals c and c denote a tubular outer tube open end closing member which is also made of a synthetic resin. One end of the connection open end 1 has a required diameter corresponding to the outer diameter of the inner tube a, and the other end thereof. Has a required diameter corresponding to the outer diameter of the outer tube b. Therefore, the connection opening end 1 and the connection opening end 2 have a small diameter in the former and a large diameter in the latter.

The outer tube opening end closing members c, c are fitted and fixed to the small diameter connection opening ends 1, 1 at required positions of the inner tube a.
In addition, the inner pipe a and the outer pipe b are fixed and maintained concentrically by fitting and fixing the large-diameter connection opening ends 2 and 2 to the both-end opening ends of the outer pipe b. The inner pipe a has both open ends open. On the other hand, the outer pipe b has both open ends closed by outer pipe open end closing members c, c, and the outer pipe open end closing members c, c and the inner pipe a form a storage chamber that is an annular empty space. 3 is formed. A drain / air pipe 4 is provided in the outer pipe b for draining excess water from the storage chamber 3 and opening the storage chamber 3 to the atmosphere. Reference numeral 4 'denotes a cock provided in the drain / air pipe 4. By opening the cock, the storage chamber 3 can be opened to the atmosphere or a state in which surplus water can be discharged.

5 are formed in a single row on the upper peripheral wall of the inner pipe a, for example, φ1, jet holes having a pitch of 25 mm; 6 are formed in the lower peripheral wall of the outer pipe b in two rows, for example, φ1, This is a hanging hole with a pitch of 10 mm.

Now, the inner pipe a is sprayed with a required pressure from both open ends on both sides or from one open end to a blind end by closing the open end by appropriate means. , The spray liquid is ejected from the ejection holes 5 and stored in the storage chamber 3, and then flows out from the hanging holes 6. In this case, as long as the cock 4 ′ of the storage chamber 3 is opened and the storage chamber 3 is opened to the atmosphere, the spray liquid in the storage chamber 3 is in a non-pressurized state, and the spray liquid flowing out of the hanging hole 6 is not sprayed. , And simply flows out in the non-pressurized state.

That is, the non-pressure spray pipe A having the above structure
According to the above, it is clear that the spray liquid fed under pressure can be sprayed in a non-pressurized state so that the spray liquid gently hangs down to the plant under its own weight.

3 and 4 show a second embodiment of the pressureless spray pipe of the present invention.
An embodiment will be described. The non-pressurized spray pipe B according to the second embodiment has an arrangement pitch of the ejection holes 5 of the inner pipe a, the number and pitch of the ejection holes 6 of the outer pipe b, and an outer pipe b. There is a difference from the non-pressurized spray pipe A of the first embodiment in that
Since other points are substantially the same, the same portions are denoted by the same reference numerals, description thereof will be omitted, and only different points will be described.

That is, the non-pressurized spray pipe B is an inner pipe a
In the outer tube b, φ1 or φ0.7, pitch 10 is formed.
There are five rows of 6 mm hanging holes 6. The open ends of both ends of the outer tube b are directly closed by disc-shaped outer tube open end closing members c, c fitted into the inner tube a, and the inner tube a and the outer tube b are fixedly maintained in a concentric state. Is what it is. The provision of a drain / air tube 4 with a cock 4 'is the same as in the first embodiment.

FIG. 5 shows a third embodiment of the pressureless spray pipe of the present invention. The non-pressure spray pipe C according to the third embodiment is similar to the non-pressure spray pipe B according to the second embodiment except that the inner pipe a, the outer pipe b, and the outer pipe open end closing members c, c, etc. However, the only difference is that the drain and air pipes 7 and 8 are not provided with cocks. In this case, whether or not the water in the storage chamber 3 is drained as surplus water is appropriately set according to the condition of feeding and pressurizing the spray liquid.

FIGS. 6 and 7 show an example of the embodiment of the spraying system according to the present invention when the above-mentioned non-pressure spraying pipe A is employed. Reference numeral 9 denotes a traveling rail suspended horizontally from a purlin or beams of a greenhouse 10, reference numeral 11 denotes a traveling carriage mounted on the traveling rail 9, reference numeral 12 denotes a driving wheel 13 which is mounted on one end of the traveling rail 9. Driven wheel 13 'mounted on the other end
And the both ends thereof are fixed to the traveling carriage 11.

14 is a support arm frame mounted on the traveling carriage 11,
15 is a feed pipe horizontally supported by the supporting arm frame 14,
During pressureless圧散cloth pipe A (Fig, A ₁ is from both sides of both opening end portions of the inner tube a, A ₂ is pressurized only from the open end of the other side closed by suitable means to one side opening end portions (Showing that the spray liquid is to be supplied)
6 for bearing connection.

Reference numeral 17 denotes a pressure feeding pump connected to the spray liquid tank 18, and 19 denotes a feeding hose having a base connected to the pressure feeding pump 17 and a tip connected to the feeding pipe 15.

When the drive wheels 13 are driven by the motor 20, the traveling vehicle 11 reciprocates along the traveling rail 9 by pulling the pulling wire 12. In addition, the pressure feed pump 1
7 is sprayed through the supply hose 19, the supply pipe 15 and the connecting pipe 16 to the spray pipe A.
(A ₁ , A ₂ ) and are sprayed on the plants on the cultivation floor 20.

That is, in the spraying system having the above-described structure, the spraying liquid is supplied under pressure by the pressure pump 17 and the sprayed liquid supplied under pressure is applied to the spraying pipe A (A ₁ , A ₁ , A ₁₎ .
After being in a non-pressurized state in A ₂ ), it is sprayed onto the plant from the hanging hole 6 in a non-pressurized state.

FIG. 8 shows another example of the embodiment of the spraying system of the present invention when the above-mentioned non-pressure spraying pipe B is adopted. This embodiment is different only in that a plurality of scatter pipes A in FIG. 6 and FIG. 7 are replaced by one long non-pressure scatter pipe B, and the other configurations are the same. The same components are denoted by the same reference numerals, and description thereof is omitted.

[0023]

As is apparent from the above description,
In the pressureless spray pipe of the present invention, the inner pipe formed by arranging the ejection holes and the outer pipe formed by arranging the discharge holes are concentric with each other to form a storage chamber capable of opening to the atmosphere. Since the double tube is formed, even the spray liquid pumped to the inner tube is in a non-pressurized state in the storage chamber and flows out of the outlet hole of the outer tube in the non-pressurized state.

Therefore, according to the spraying system of the present invention, it is possible to spray the spraying liquid which has been fed by the pressure feeding pump through the feeding hose in a non-pressurized state. In other words, unlike the conventional case of continuous spraying at the set pressure,
Gentle spraying can be performed without adversely affecting spores, young shoots, young leaves, etc. even from the closest position of the plant.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along an axis of a first embodiment of a pressureless spray pipe of the present invention.

FIG. 2 is a cross-sectional view in a direction orthogonal to the axis of the above.

FIG. 3 is a sectional view taken along an axis of a second embodiment of the pressureless spray pipe of the present invention.

FIG. 4 is a cross-sectional view in a direction orthogonal to the axis of the above.

FIG. 5 is a sectional view taken along an axis of a third embodiment of the pressureless spray pipe of the present invention.

FIG. 6 shows an embodiment of the spraying system according to the present invention.
It is a schematic perspective view showing about the case where the non-pressure scatter pipe concerning a 1st embodiment is adopted.

FIG. 7 is a schematic front view of the same.

FIG. 8 is a schematic front view showing a case where a non-pressure spray pipe according to a second embodiment is employed as another example of the embodiment of the spray system of the present invention.

[Explanation of symbols]

 a Inner pipe b Outer pipe c Outer pipe open end closing member 3 Storage chamber 4 Drain / air pipe 4 'cock 5 Spout hole 6 Hanging hole 7 Drain / air pipe 8 Drain / air pipe 9 Running rail 10 Greenhouse 11 Traveling trolley 14 Support arm frame 17 Pressure feed pump 19 Feed hose

Claims (6)

[Claims] 1. A concentric double-pipe body in which a storage chamber is provided between an inner pipe having ejection holes arranged therein and an outer pipe having hanging holes arranged therein so as to be open to the atmosphere. A pressureless spray pipe characterized by comprising: 2. An inner pipe having a row of ejection holes and an outer pipe having a row of discharge holes fixedly maintained in a concentric state by an outer pipe opening end closing member interposed and fixed between the two pipes. And a pressureless spray pipe characterized by comprising a concentric double pipe having a storage chamber open to the atmosphere between them. 3. The non-pressure spray pipe according to claim 1, wherein the storage chamber is provided with a drain / air pipe. 4. The pressureless spray pipe according to claim 3, wherein the drain / air pipe includes a cock. 5. A discharge hole is formed in an upper peripheral wall of an inner tube, and a discharge hole is formed in a lower peripheral wall of an outer tube.
A pressureless spray pipe according to 3 or 4. 6. A traveling arm mounted on a traveling rail horizontally mounted at a required position in a greenhouse so that the traveling vehicle can reciprocate, and a supporting arm frame mounted on the traveling vehicle has a support arm frame. A spraying system comprising suspending the non-pressurized spray pipe described above and spraying the spraying liquid pumped by a pressure pump through a feed hose from the non-pressurized spray pipe.