JP5194211B2 - Dust removal device for sprinkler - Google Patents

Description

  The present invention relates to a sprinkler dust removal device that can automatically remove dust accumulated inside a connection pipe of a sprinkler to the outside and facilitates maintenance work of the sprinkler.

  As a typical irrigation facility in a farm field, a sprinkler facility has been conventionally known (see Patent Document 1). As an example, this sprinkler facility connects the reservoir and the field with underground pipes, pipes line pipes from the underground pipes to the ground, and connects risers (riser pipes) in the middle of the line pipes. A sprinkler is provided at the upper end of each riser pipe, and the water in the reservoir is pumped by pumps through underground pipes and line pipes, and is sprinkled into the field from the sprinkler nozzle of the sprinkler at the upper end of each riser pipe. In addition, each sprinkler often rotates within a range of a certain angle by water pressure from below and sprays water evenly throughout the field.

In tea gardens, in order to avoid frost damage during the early spring shoots, a defrosting method (watering freezing method) using watering by a defrosting fan and a sprinkler has been conventionally used as a defrosting facility. In the latter frost prevention method, if the temperature of the shoots drops to -2 ° or less due to frost and the ground is cooled by radiation, the shoots will die due to frost damage. The sprinkler is activated or sprinkled automatically or manually, the water adhering to the tea leaves freezes and releases latent heat, thereby keeping the shoots at about 0 ° C., thereby preventing frost damage.
Japanese Utility Model Publication No. 5-63252

  Most of the dust collected in the reservoir is removed by the strainer installed at the entrance of the pipe or along the way. There is a case. For this reason, conventionally, it is necessary to remove the sprinkler and remove the dust inside each time clogging occurs. If the sprinkler is clogged, it will interfere with watering, and the sprouts will suffer from frost damage and die. For this reason, as mentioned above, it is necessary to clean the inside of the sprinkler each time, but in the tea gardens and orchards etc., many sprinklers are installed in the garden, so for the farmers the cleaning work The burden of is extremely large. In addition, there is an example in which a high-performance filter for removing dust is attached in front of the sprinkler, but there is a problem that the cost required for maintenance and replacement is high.

  Furthermore, the sprinkler equipment is used for various purposes such as spraying chemicals and cleaning leaves, in addition to the above-mentioned irrigation and defrosting purposes.

  The present invention has been made in view of the above problems, and provides a sprinkler dust removal device that can automatically remove dust collected inside a sprinkler connection pipe to the outside and facilitate the maintenance of the sprinkler. The purpose is that.

  In order to solve the above-described problems, a sprinkler dust removing device according to claim 1 of the present invention includes a cylindrical main body portion provided at a rising portion of a water supply pipe connected to the sprinkler, and a nozzle portion of the sprinkler. A filter member provided on the upstream side of the outlet, a water supply passage penetrating vertically inside the main body portion, a valve chamber accommodating and arranging a spherical valve body in the middle of the water supply passage, By applying upward water pressure from the pipe, the spherical valve body in the valve chamber rises and opens the water supply passage, and by removing the water pressure, the spherical valve body sinks and closes the inlet of the valve chamber, A drainage port penetrating to the outside from the valve chamber is provided in the part, and the inlet of the drainage port is closed by a spherical valve body that receives the water pressure inside the main body part in the water supply state of the water supply passage. And

  According to the sprinkler dust removing device according to claim 1, the water fed from the reservoir or the like by the pump from the water supply pipe to the sprinkler through the rising portion through the rising portion is a water supply passage in the main body portion of the dust removing device provided at the rising portion. When passing upward, the spherical valve element housed in the valve chamber floats by the water pressure from below and opens the water supply passage. At the same time, the floated valve element is sucked into the drain port 28 by the negative pressure of water sucked into the drain port that opens to the outside from the valve chamber, and at the same time, the water pressure inside the main body is reduced. Receive and close the entrance to the drain. In a state where the inlet of the water drain port is closed by the spherical valve body, all the water in the water supply passage is pumped to the water supply passage inside the sprinkler, discharged from the discharge port of the sprinkler nozzle of the sprinkler, and sprinkled. Meanwhile, small dust or dust that has not been removed by the strainer or the like travels to the sprinkler together with the pumped water, but the filter member provided on the upstream side of the discharge port of the sprinkler nozzle portion causes It is gradually accumulated from the inside to the front of the filter member.

  When the pump is stopped to stop watering, water is no longer pumped through the water supply pipe, and the spherical valve body that has closed the drainage port due to water pressure in the valve chamber during water supply sinks due to gravity, and the inlet of the valve chamber At the same time, the inlet of the drainage port penetrating from the valve chamber to the outside is opened, and the water accumulated in the sprinkler and the valve chamber is automatically discharged to the outside through the drainage port. At the same time, dust accumulated from the inside of the main body to the front of the filter member is automatically discharged to the outside following the water discharge.

  As a result, when the pump is stopped, the dust accumulated in front of the filter member provided in the main body can be automatically discharged outside without removing the sprinkler. It becomes easy. Moreover, this can prevent the problem that sprinklers are clogged with dust and cannot be sprinkled, and that new shoots such as tea gardens wither due to frost damage.

  The main body may be provided at the rising part of the water supply pipe connected to the sprinkler.For example, in addition to being provided at the upper end of the riser pipe immediately below the sprinkler, a vertical rising part is provided in the vicinity of the main plug of the water supply pipe continuing from the pump. It may be provided at the rising portion.

  The sprinkler dust removing device according to claim 2 of the present invention is characterized in that an outer diameter of the spherical valve body is larger than each of an inlet diameter of the valve chamber and an inlet diameter of the drain port.

  The sprinkler dust removing device according to claim 3 of the present invention is characterized in that an inlet diameter of the drain port is larger than an outlet diameter of the nozzle portion.

  The sprinkler dust removing device according to claim 4 of the present invention is characterized in that the filter member is provided between a valve chamber of the main body and a water supply passage inside the sprinkler communicating with the valve chamber. .

  As described above, the sprinkler debris removal device according to the present invention, when supplying water, always opens the water supply passage inside the main body to sufficiently exhibit the irrigation function and defrost function, and when the water supply is stopped, Water that accumulates inside the sprinkler is automatically discharged from the drain port provided on the side of the main body to the outside, and at the same time, between the filter member provided on the upstream side of the sprinkler nozzle outlet from the inside of the main body. The accumulated dust and dust can be automatically discharged to the outside following the discharge of water, so that the dust inside the sprinkler connection pipe can be eliminated without removing the sprinkler, and the sprinkler maintenance management It has the excellent effect of making it extremely easy and simple.

  In addition, the sprinkler dust removing device according to the present invention has an excellent effect that the structure is very simple, the durability is excellent, and the manufacturing cost is low.

  A first embodiment for carrying out the present invention will be described with reference to FIGS. 1 to 7, taking a tea garden as an example. 1 and 2, reference numeral 10 indicates a sprinkler system.

  In the sprinkler system 10, the reservoir 1 and the tea garden (farm field) 2 are connected by an underground pipe 11, and the ground surface of the tea garden 2 has a plurality of (four in the illustrated example) connected to the underground pipe 11. The line pipes 12 extend in parallel on the basket 2A in which the tea tree T is planted, and rising pipes (riser pipes) 13 are provided at regular intervals in the middle of each line pipe 12. A sprinkler 30 is provided at the upper end of each rising pipe 13 via a sprinkler dust removing device (hereinafter simply referred to as “dust removing device”) 20 according to the present invention. The water sprayed from the reservoir 1 by the pump 14 is discharged from the water spray nozzle 31 of each sprinkler 30 and sprayed within a predetermined range in the tea garden 2.

  FIG. 3 shows a cross-sectional view of the connected state of the members of the riser 13, the dust removing device 20, and the sprinkler 30. The dust removing device 20 has a cylindrical main body 21, and a lower connection portion 22 that is detachably connected to the upper end opening 13 a of the riser 13 is provided at the lower end of the main body 21. . A female screw portion 22 a is provided on the outer periphery of the lower connection portion 22, and is screwed into a male screw portion 13 b provided on the inner surface of the upper end opening portion 13 a of the rising tube 13. Further, an upper connection portion 23 that is detachably connected to the lower end portion 36 of the sprinkler 30 is provided at the upper end portion of the main body portion 21. A male screw portion 23 b is provided on the inner periphery of the upper end opening 23 a of the upper connection portion 23, and is screwed into a female screw portion 36 a provided on the outer periphery of the lower end portion 36 of the sprinkler 30.

As shown in FIGS. 3 and 4, a water supply passage 24 that penetrates vertically and communicates with the water supply passage 15 in the rising pipe 13 is provided inside the main body 21. In the middle of the water supply passage 24, a valve chamber 26 in which a spherical valve body 25 is accommodated is provided. The inner diameter D ₁ of the valve chamber 26 is larger than the inner diameter D ₂ of the lower passage 24 a located below the valve chamber 26 of the water supply passage 24.

The spherical valve body 25 accommodated in the valve chamber 26 floats in the valve chamber 26 by applying water pressure from below during water supply, opens the water supply passage 24, and sinks when the water supply is stopped to enter the inlet 26a of the valve chamber 26. The outer diameter D ₃ of the spherical valve body 25 is larger than the inlet diameter of the valve chamber 26, that is, the inner diameter D ₂ of the lower passage 24 a, and the inner diameter of the valve chamber 26. D is smaller than _1.

  Furthermore, in the lower part of the inner periphery of the upper connection part 23 of the main body part 21, in order to capture dust and dust flowing together with water in the pipes of the underground pipe 11, the line pipe 12 and the rising pipe 13 toward the sprinkler 30 side. The mesh-shaped filter member 27 is attached.

A drain port 28 that penetrates from the valve chamber 26 to the outside is provided on the side of the main body 21. The inner diameter D ₄ of the water drain port 28 is several times (three times or more in the illustrated example) larger than the diameter of the tip discharge port 31 a of the water spray nozzle 31 in the sprinkler 30. Further, the inner diameter D ₄ of the drain port 28 is smaller than the outer diameter D _{3 of} the spherical valve body 25, and the spherical valve body 25 that has received the water pressure inside the main body 21 in the water supply state of the water supply passage 24 at the time of water supply. As a result, the inlet is closed and water leakage is also prevented. Further, a taper (for example, 45 degrees) is provided at the peripheral edge of the drain port 28 on the valve chamber 26 side so as to be in close contact with the spherical valve body 25 when closed, thereby improving the closing performance. .

  In addition, the lower surface 26b of the valve chamber 26 is an inclined surface that is inclined downward toward the lower passage 24a of the water supply passage 24, and improves the adhesion with the spherical valve body 25 when the water supply is stopped. There is an effect of improving the closing performance.

  The sprinkler 30 includes a sprinkler main body 32 having a water spray nozzle 31, a diffusion blade 33 rotatably attached to the sprinkler main body 32, and a biasing spring 34 attached to the sprinkler main body 32. A water supply passage 35 that is open at the lower end and communicates with the tip discharge port 31 a of the water spray nozzle 31 is formed.

  The sprinkler 30 is configured such that water pumped from the water supply passage 24 of the dust removal device 20 is supplied with the lower end 36 of the sprinkler main body 32 connected to the upper connection portion 23 of the main body portion 21 of the dust removal device 20. 35, and is ejected from the tip discharge port 31 a, and the front diffusion blade 33 is rotated in one direction against the biasing spring 34 by water pressure, and the diffusion blade 33 is restored by the restoring force of the biasing spring 34. The sprinkler body 32 can be hit and the sprinkler body 32 can be rotated in the circumferential direction within a certain angular range. Note that the rotation angle of the sprinkler body 32 can be regulated within a certain range by a stopper (not shown). In addition, the sprinkler 30 of the example of illustration is an example, and it cannot be overemphasized that various sprinklers are applicable.

  Next, the operation of the sprinkler system 10 and the dust removing device 20 will be described below with reference to FIGS.

  By the operation of the pump 14 shown in FIG. 1, the water pumped from the reservoir 1 through the underground pipe 11 and each line pipe 12 is pumped upward from the water supply passage 15 of each rising pipe 13 to the water supply passage 24 of the dust removing device 20. Then, as shown in FIG. 4, the spherical valve body 25, which has closed the inlet 26 a of the valve chamber 26 in the middle of the water supply passage 24, floats to supply water as shown in FIG. 5 due to upward water pressure. The passage 24 is opened. At the same time, the floating spherical valve body 25 is sucked toward the drain port 28 by the negative pressure of the water sucked into the drain port 28 from the valve chamber 26, and as shown in FIG. Then, the inlet of the drain port 28 penetrating from the valve chamber 26 to the outside is closed. Thereby, the water pumped upward through the water supply passage 15 of the rising pipe 13 passes through the water supply passage 24 of the dust removing device 20 and the water supply passage 35 inside the sprinkler 30 and is discharged from the tip discharge port 31a of the water spray nozzle 31. The As shown in FIG. 1, each sprinkler 30 sprinkles water within the tea garden 2 while rotating within a certain angle range by the action of the diffusion blade 33 and the biasing spring 34 during water supply.

  The operation of the pump 14 is controlled by, for example, a temperature sensor (not shown) near the ground surface that detects the leaf temperature. When the leaf temperature falls to 2 ° C. in early spring, the pump 14 is automatically activated by a signal from the temperature sensor. And watering for a certain period of time.

  When water is sprayed for a certain period of time, the pump 14 is automatically stopped or the pumping of water from the reservoir 1 is stopped by manually closing a valve or the like, in the water supply passage 24 in the dust removing device 20, Since the water pressure from the bottom is removed, the spherical valve body 25 that has closed the inlet of the drain port 28 settles by weight as shown in FIG. 7, and closes the inlet 26a of the valve chamber 26. As a result, the water supply passage 24 is closed. At the same time, the inlet of the drain port 28 is opened, and water remaining in the water supply passage 35 in the sprinkler 30 and the valve chamber 26 in the dust removing device 20 passes through the drain port 28 and is drained to the outside. The dust G or the like accumulated in the lower part of the valve chamber 26 and the filter member 27 in the dust removing device 20 goes back to the lower connection pipe 22 and does not collect in the pipe, and follows the discharge of water. It is automatically discharged from the outlet 28 to the outside.

  According to the dust removal device 20 of the present embodiment, even after small water and dust from the reservoir 1 flow along the water supply pipe toward the sprinkler 30 after the start of watering, they are accumulated from the valve chamber 26 to the lower part of the filter member 27. Every time water sprinkling is stopped, waste water is automatically discharged to the outside together with water from the drain port 28, so there is no need to remove dust accumulated in the sprinkler connection piping. In addition, it is unnecessary to remove the sprinkler 30 in order to remove dust.

  Even if the dust stays in the valve chamber 26 of the main body 21, the dust accumulated in the valve chamber 26 is discharged simultaneously with the discharge of water by repeating the water supply and the stop. Thereby, the maintenance management of the sprinkler 30 becomes easy semipermanently. In addition, the sprinkler is not clogged and water spraying is impossible.

  The sprinkler dust removing device according to the present invention can be used as a sprinkler for any application, for example, a sprinkler dust removing device for irrigation, frost prevention, drug spraying, leaf cleaning, and the like.

The side view which shows the outline | summary of the sprinkler system using the dust removal apparatus for sprinklers of this invention, FIG. 1 is a plan view of the sprinkler system shown in FIG. Sectional drawing of the dust removal apparatus for sprinklers of this invention, It is explanatory drawing which shows the effect | action of the dust removal apparatus for sprinklers of this invention, The figure which shows the state by which the water supply path was closed by the spherical valve body by the spherical valve body, It is explanatory drawing which shows the effect | action of the dust removal apparatus for sprinklers of this invention, The figure which shows the state by which the water supply path was opened by the floating of the spherical valve body, The figure which shows the effect | action of the dust removal apparatus for sprinklers of this invention, The figure which shows the state by which the entrance of the drainage port was closed by the floating of the spherical valve body, It is explanatory drawing which shows the effect | action of the dust removal apparatus for sprinklers of this invention, and is a figure which shows the state by which the water supply path was closed by sedimentation of a spherical valve body.

Explanation of symbols

1 Reservoir 2 Tea farm (field)
2A 畝 10 Sprinkler system 11 Underground piping 12 Line pipe 13 Rising pipe (rising part)
13a, 23a Upper end openings 13b, 23b Male threaded portion 14 Pumps 15, 24, 35 Water supply passages 22a, 36a Female threaded portion 20 Dust removal device 21 Main body portion 22 Lower connection portion 23 Upper connection portion 24a Lower passage 25 Spherical valve body 26 the inner diameter _{D 2} under the valve chamber 26a valve chamber inlet 27 mesh filter member 28 drain port 30 sprinkler 31 sprinkler nozzle 31a the tip end outlet 32 sprinkler body 33 spreading blade 34 biasing spring 36 the lower end portion 37 stopper _{D 1} valve chamber Inner diameter D of side passage ₃ Outer diameter D of spherical valve body ₄ Inner diameter T of drainage port Tea tree

Claims (4)

  It has a cylindrical main body provided at the rising portion of the water supply pipe connected to the sprinkler, and a filter member provided upstream from the discharge port of the sprinkler nozzle, and penetrates vertically into the main body A valve chamber in which a spherical valve body is housed and arranged is provided in the middle of the water supply passage, and the spherical valve body in the valve chamber is floated by application of upward water pressure from the water supply pipe. Is opened, the spherical valve body is settled by the removal of the water pressure, the inlet of the valve chamber is closed, a drainage port penetrating from the valve chamber to the outside is provided on the side of the main body, and the water supply passage The sprinkler dust removing device, wherein an inlet of the drain port is closed by a spherical valve body that receives water pressure inside the main body in a water supply state.   2. The sprinkler dust removing device according to claim 1, wherein an outer diameter of the spherical valve body is larger than each of an inlet diameter of the valve chamber and an inlet diameter of the drain port.   The sprinkler dust removal device according to claim 1 or 2, wherein an inlet diameter of the drain port is larger than an outlet diameter of the nozzle portion. The said filter member is provided between the valve chamber of a main-body part, and the water supply channel | path inside the said sprinkler connected to the said valve chamber, The Claim 1 thru | or 3 characterized by the above-mentioned. Dust removal device for sprinklers.

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