JP2019076875A - Valve device with sprinkler nozzle and sprinkler nozzle - Google Patents

Abstract

To provide a valve device with a sprinkler nozzle capable of achieving both the flying distance and the sprinkling range (area) of water when water is sprayed.SOLUTION: A valve device with a sprinkler nozzle 50 comprises a valve 10 and a sprinkler nozzle 20. The sprinkler nozzle 20 sprays liquid at a flow rate adjusted by the valve 10. The sprinkler nozzle 20 includes a flow outlet 23a, an angle adjustment mechanism 24, a contraction part 21, a parallel part 22 and a flow direction adjustment part 23. The angle adjustment mechanism 24 adjusts an angle relative to the tip of the valve 10. The contraction part 21 reduces the cross section of a channel in which the liquid flows toward the flow outlet. The parallel part 22 is arranged on the downstream side of the contraction part 21 in the channel and straightens the liquid so that the cross section of the channel remains almost constant toward the flow outlet. The flow direction adjustment part 23 is arranged on the downstream side of the parallel part 22 in the channel and blocks a part of the cross section of the parallel part 22 on the side of the flow outlet 23a to adjust the flow direction in the channel.SELECTED DRAWING: Figure 2

Description

  The present invention relates to, for example, a valve device with a water spray nozzle and a water spray nozzle for performing water spray on roads and the like.

  In recent years, a valve device with a water spray nozzle is used, for example, as a facility for snow melting of roads and railways, and for agriculture.

  For example, Patent Document 1 discloses a valve device with a water spray nozzle, which is attached to a valve tip and has an adjustable-angle water spray nozzle.

Japanese Utility Model Application Publication No. Hei 2-47484

  However, the valve apparatus with a conventional water spray nozzle has the following problems.

  That is, although the device disclosed in the above-mentioned publication is equipped with a water spray nozzle that can freely set the injection direction, it is difficult to achieve both the flight distance and the water discharge range (area) of water when water is sprayed.

  For this reason, for example, as a valve apparatus with a water spray nozzle for sprinkling on a road, one nozzle is required for each lane of the road, which complicates maintenance and leads to an increase in cost.

  An object of the present invention is to provide a valve device with a water spray nozzle capable of achieving both the flight distance of a liquid and the water spray range (area) when water is sprayed.

  A valve device with a water spray nozzle according to a first aspect of the present invention includes a valve and a water spray nozzle. A watering nozzle is attached to the tip and waters the flow of liquid adjusted by the valve. The water spray nozzle has an outlet, an angle adjustment mechanism, a throttling portion, a parallel portion, and a flow direction adjustment portion. The outlet spouts the liquid to the outside. The angle adjustment mechanism adjusts the angle of the tip of the valve. The throttling portion reduces the cross section of the flow path through which the liquid flows toward the outlet. The parallel portion is disposed downstream of the constriction portion in the flow passage, and the cross-sectional area of the flow passage is substantially constant toward the outlet to rectify the liquid. The flow direction adjustment unit is disposed downstream of the parallel portion in the flow path, and closes a part of the cross section of the parallel portion on the outlet side to adjust the flow direction in the flow path.

  Here, in the valve apparatus with a water spray nozzle attached to the tip of the valve and equipped with a water spray nozzle for performing water spray, the flow path formed in the water spray nozzle is configured by a throttling portion, a parallel portion, and a flow direction adjusting portion. Specifically, the throttling portion reduces the cross section of the flow path toward the outlet with respect to the cross section of the pipe on the valve side, and increases the flow velocity of the liquid flowing in the flow path in the water spray nozzle. The parallel portion is connected to the downstream side of the throttling portion, and by making the cross-sectional area of the flow path substantially constant, the flow direction of the liquid flowing in the flow path in the water spray nozzle is made uniform. Furthermore, the flow direction adjustment unit is disposed downstream of the parallel portion, and adjusts the flow direction in the flow path immediately before the outlet by closing a part of the cross section of the parallel portion in the vicinity of the outlet.

  Here, various liquids, such as a snow melting agent, such as tap water, warm water, salt water, etc. can be used as a liquid sprinkled by this valve apparatus with a water spray nozzle, for example.

  Also, for example, the narrowed portion may reduce the cross section of the flow path at a constant rate, or may reduce it stepwise.

  Furthermore, the flow direction adjustment unit can use, for example, a plane or the like that blocks the end of the circular cross section in the vicinity of the outlet.

  As a result, the flow velocity increases in the constriction part, and the water flow whose flow direction is substantially uniform in the parallel part collides with the water flow going straight from the parallel part and the closed part in the flow direction adjustment part arranged in the vicinity of the outlet. And the water flow that generates turbulence can be generated simultaneously.

  Therefore, the traveling distance of the liquid discharged from the outlet can be secured by the water flow going straight, and the diffusion of the liquid discharged from the outlet in the back and forth direction (water sprinkling direction) by the turbulent flow generated in the flow direction adjustment unit Sex can also be secured.

As a result, it is possible to achieve both the flight distance of the liquid when watering and the watering range (area).
The valve apparatus with a water spray nozzle according to the second invention is the valve apparatus with a water spray nozzle according to the first invention, wherein the parallel portion has a flow path length / a cross sectional area of the flow path of 0.01 or more 2 Less than .00

  Here, with respect to the flow path in the parallel portion, a preferable range is defined for the ratio of the length (L) to the cross-sectional area (S).

  Here, when the shape of the parallel portion is too thin (L / D is large), the straightness of the water flow becomes too strong, and the diffusivity in the front-rear direction at the time of sprinkling may be impaired.

  On the other hand, if the shape of the parallel portion is too short (L / D is small), the straightness of the water flow is lost, and there is a possibility that the jet direction of the water flow can not be determined at the time of water sprinkling.

  Therefore, here, preferably, L / D is preferably 0.01 or more and less than 2.00. Further, more preferably, it is preferably 0.01 or more and less than 0.50, and more preferably 0.10 or more and less than 0.30.

  Thereby, by setting L / D to the said range, the flight distance of the liquid at the time of water sprinkling and the water sprinkling range (area) can be reconciled.

  The valve apparatus with a water spray nozzle according to the third invention is the valve apparatus with a water spray nozzle according to the first or second invention, wherein the closed area of the cross section in the flow direction adjusting portion is relative to the flow path cross sectional area of the parallel portion 3% to less than 50%.

  Here, a preferable range is defined for the ratio of the closed area in the flow direction adjusting unit to the flow passage cross-sectional area in the parallel portion.

  Here, when the closed area in the flow direction adjustment unit is too large, the turbulent flow becomes dominant over the straight water flow, and there is a possibility that a sufficient flight distance can not be secured. On the other hand, when the closed area in the flow direction adjustment unit is too small, the straight water flow becomes more dominant than the turbulent flow, and there is a possibility that the diffusivity in the front-rear direction can not be secured.

  Therefore, it is preferable that the area of the closed portion of the cross section of the flow passage in the flow direction adjusting unit is 3% or more and less than 50% of the cross sectional area of the flow passage in the parallel portion. More preferably, it is 3% or more and less than 30%, and more preferably 5% or more and less than 15%.

  Thus, by setting the ratio of the area of the closed portion in the flow direction adjusting portion to the cross-sectional area of the flow path in the parallel portion in the above range, it is possible to balance the flying distance and the water discharging range (area) of the liquid at the time of watering. it can.

A valve apparatus with a water spray nozzle according to a fourth invention is the valve apparatus with a water spray nozzle according to any one of the first to third inventions, wherein the opening cross-sectional area in the flow direction adjusting portion is 3 mm ² or more 30 mm ² Less than.

Here, a preferable range is defined for the opening cross-sectional area in the flow direction adjusting unit.
Here, if the cross-sectional area of the opening in the flow direction adjusting portion is too small, clogging may occur due to pebbles or precipitated salt. On the other hand, when the cross-sectional area of the opening in the flow direction adjusting unit is too large, the flow velocity of the water flow can not be sufficiently secured during water sprinkling, and both the flight distance and the spread area may be reduced.

Therefore, the opening cross-sectional area after closure is preferably 3 mm ² or more and less than 30 mm ² . More preferably, 5 mm ² or more and less than 15 mm ² are preferable.

  Thus, by setting the cross-sectional area of the opening in the flow direction adjustment unit in the above range, the distance between the water and the water spray range (area) at the time of water sprinkling can be prevented while preventing the occurrence of clogging by impurities mixed in the liquid. It can be made to be compatible.

  The valve apparatus with a water spray nozzle according to the fifth invention is the valve apparatus with a water spray nozzle according to any one of the first to fourth inventions, wherein the material of the water spray nozzle is a synthetic resin.

Here, the water spray nozzle is formed of a synthetic resin from the viewpoint of rust prevention and the like.
Here, as a raw material of a water spray nozzle, arbitrary synthetic resins, such as polyvinyl chloride, polyethylene, a polypropylene, and ABS, can be used, for example. In particular, polyvinyl chloride is preferable because it is easy to secure various physical properties such as elastic modulus and strength.

  Thereby, even when a liquid such as salt water is dispersed as a snow melting agent, it can be easily manufactured without requiring special processing or the like by injection molding while preventing the generation of rust.

  A valve apparatus with a water spray nozzle according to a sixth invention is the valve apparatus with a water spray nozzle according to any one of the first to fifth inventions, wherein the angle adjusting mechanism is a recess formed on the nozzle side And a ball joint fitted in the recess.

Here, a ball joint is adopted as an angle adjustment mechanism.
Thereby, by adopting a ball joint at the connection portion with the valve side, the direction of the water spray nozzle can be freely changed by a simple configuration.

As a result, it is possible to expand the water application range (area) of the liquid at the time of water application.
The water spray nozzle according to the seventh invention is a water spray nozzle attached to the tip of a valve and sprinkling a flow of liquid adjusted by the valve, and includes an outlet, an angle adjusting mechanism, a throttling portion, and a parallel portion. , And a flow direction adjustment unit. The outlet spouts the liquid to the outside. The angle adjustment mechanism adjusts the angle of the tip of the valve. The throttling portion reduces the cross section of the flow path through which the liquid flows toward the outlet. The parallel portion is disposed downstream of the constriction portion in the flow passage, and the cross section of the flow passage is substantially constant toward the outlet to rectify the liquid. The flow direction adjustment unit is disposed downstream of the parallel portion in the flow path, and closes a part of the cross section of the parallel portion on the outlet side to adjust the flow direction in the flow path.

  Here, in the water sprinkling nozzle attached to the tip of the valve and performing water sprinkling, the flow path formed in the water sprinkling nozzle is configured by the throttling portion, the parallel portion, and the flow direction adjusting portion. Specifically, the throttling portion reduces the cross section of the flow path toward the outlet with respect to the cross section of the pipe on the valve side, and increases the flow velocity of the liquid flowing in the flow path in the water spray nozzle. The parallel portion is connected to the downstream side of the throttling portion, and by making the cross-sectional area of the flow path substantially constant, the flow direction of the liquid flowing in the flow path in the water spray nozzle is made uniform. Furthermore, the flow direction adjustment unit is disposed downstream of the parallel portion, and adjusts the flow direction in the flow path immediately before the outlet by closing a part of the cross section of the parallel portion in the vicinity of the outlet.

  Here, various liquids, such as a snow melting agent, such as tap water, warm water, salt water, etc. can be used as a liquid sprinkled by this valve apparatus with a water spray nozzle, for example.

  Also, for example, the narrowed portion may reduce the cross section of the flow path at a constant rate, or may reduce it stepwise.

  Furthermore, the flow direction adjustment unit can use, for example, a plane or the like that blocks the end of the circular cross section in the vicinity of the outlet.

  As a result, the flow velocity increases in the constriction part, and the water flow whose flow direction is substantially uniform in the parallel part collides with the water flow going straight from the parallel part and the closed part in the flow direction adjustment part arranged in the vicinity of the outlet. And the water flow that generates turbulence can be generated simultaneously.

  Therefore, the traveling distance of the liquid discharged from the outlet by the straight water flow can be secured, and the diffusivity of the liquid discharged from the outlet by the turbulent flow generated in the flow direction adjusting unit is also secured. be able to.

  As a result, it is possible to achieve both the flight distance of the liquid when watering and the watering range (area).

  ADVANTAGE OF THE INVENTION According to the valve apparatus with a watering nozzle which concerns on this invention, the flight distance and the watering range (area) of water at the time of watering can be made compatible.

The figure which shows the structure of the valve apparatus with a water spray nozzle which concerns on one Embodiment of this invention. Sectional drawing which shows the structure of the water spray nozzle contained in the valve apparatus with a water spray nozzle of FIG. (A) is the flow-path cross-sectional view in the parallel part of the water spray nozzle of FIG. (B) is the flow-path cross-sectional view in the flow direction adjustment part of the water spray nozzle of FIG. Flow-path sectional drawing in the parallel part of the water spray nozzle which concerns on other embodiment of this invention. (B) is the flow-path cross-sectional view in the flow direction adjustment part of the water spray nozzle of FIG. The figure which shows the result of having compared the flight distance by the structure of the Example which concerns on this invention, and the structure of a comparative example, the range of watering, etc. (A) is a channel sectional view showing the composition of comparative example 1 as comparison object of the example of the present invention. (B) is the flow-path cross-sectional view in the flow direction adjustment part of the water spray nozzle of (a). (A) is a channel sectional view showing the composition of comparative example 2 as comparison object of the example of the present invention. (B) is the flow-path cross-sectional view in the flow direction adjustment part of the water spray nozzle of (a).

(Embodiment 1)
It will be as follows if a valve device with a watering nozzle and a watering nozzle concerning one embodiment of the present invention are explained using Drawing 1-Drawing 3 (b).

  The valve device 50 with a water spray nozzle according to the present embodiment is, for example, a device for sprinkling salt water or the like as a snow melting agent from the side of a road or the like onto the road, and as shown in FIG. , And a water spray nozzle 20.

(Valve 10)
The valve 10 is provided to adjust the amount of water flowing in the flow path formed inside, and as shown in FIG. 1, the main body portion 11, the connection portion 12, the bending portion 13 and the lever 14 are provided. Have.

  As shown in FIG. 1, the main body 11 has a substantially cylindrical shape, and the connection 12 is formed at the upstream end of the flow path of the liquid formed therein, and the water is sprayed at the downstream end. The nozzle 20 is connected. Further, the main body portion 11 is connected to the connection portion 12 via the bending portion 13 on the upstream side of the flow path.

  The connection part 12 is connected to piping arrange | positioned at the upstream side of the valve apparatus 50 with a water spray nozzle, as shown in FIG. 1, and liquids, such as salt water, are supplied from an upstream side.

  As shown in FIG. 1, the bending portion 13 is provided so as to bend the flow path formed inside by about 90 degrees with respect to the flow path formed in the main body portion 11.

  The lever 14 is attached to the upper portion of the main body 11 as shown in FIG. 1 and is rotated to adjust the opening area of the flow path formed in the main body 11. As a result, the flow rate of the liquid such as salt water supplied to the water spray nozzle 20 is adjusted.

(Sprinkler nozzle 20)
The water spray nozzle 20 is attached to the tip end side of the valve 10 and sprays a liquid such as salt water whose amount of water is adjusted by the valve 10. And as shown to Fig.2 (a), the water spray nozzle 20 has the substantially spherical main-body part 20a, the aperture | diaphragm | squeeze part 21, the parallel part 22, the flow direction adjustment part 23, and the angle adjustment mechanism 24. As shown in FIG.

  Assuming that the snow melting agent such as salt water is sprayed by the valve device 50 with a water spray nozzle, the water spray nozzle 20 is preferably molded of a synthetic resin from the viewpoint of rust prevention, formability, strength and the like.

  As a synthetic resin which shape | molds the water spray nozzle 20, arbitrary synthetic resins, such as a polyvinyl chloride, polyethylene, a polypropylene, and ABS, can be used, for example. In particular, polyvinyl chloride is preferably used considering that various physical properties such as modulus of elasticity, strength and the like can be easily secured and the formability is also good.

  As in the present embodiment, if it has a shape like the water spray valve 20, the water spray nozzle 20 can be easily manufactured, for example, by injection molding without requiring special cutting.

  The main body portion 20 a is formed in a substantially spherical shape, and internally includes a flow path formed by the throttling portion 21, the parallel portion 22, and the flow direction adjusting portion 23. Then, the main body portion 20a is connected so that the substantially spherical portion is fitted in the concave portion provided at the tip on the valve 10 side.

  As a result, the substantially spherical main body portion 20a is held rotatably in the up, down, left, and right directions in the recess on the valve 10 side, so that the direction of the water spray nozzle 20 can be freely changed. That is, the substantially spherical main body 20 a and the recess on the valve 10 side function as the angle adjustment mechanism 24 of the water spray nozzle 20.

  The throttle part 21 is provided in the side connected to the valve | bulb 10 in the inside of the main-body part 20a, as shown to Fig.2 (a). Then, the throttling portion 21 forms a substantially conical flow passage 21 a whose flow passage cross section becomes smaller toward the downstream side by the restriction 21 b.

  As a result, by reducing the cross-sectional area from the cross-sectional area of the flow path on the valve 10 side by the throttle 21b, it is possible to increase the flow velocity of the liquid such as salt water flowing in the flow path 21a.

  The parallel part 22 is connected to the end of the side (downstream side) in which the cross-sectional area is reduced by the narrowed part 21 as shown in FIG. 2 (a).

  Moreover, as shown to Fig.3 (a), the flow path 22a of the parallel part 22 has a circular cross section, and has a substantially constant cross-sectional area.

  As a result, the liquid whose flow velocity has increased in the constricted portion 21 a can make the flow direction substantially uniform in the parallel portion 22.

  Here, assuming the length L of the flow path 22a of the parallel portion 22 and the cross-sectional area S, if the shape of the parallel portion 22 is too long (L / D is large), the straightness of the water flow becomes too strong, There is a possibility that the diffusivity in the front and back direction at the time of watering may be impaired.

  On the other hand, when the shape of the parallel portion 22 is too short (L / D is small), the straightness of the water flow is lost, and there is a possibility that the jet direction of the water flow at the time of sprinkling can not be determined.

  Therefore, it is preferable that L / D is 0.01 or more and less than 2.00 about parallel part 22 in water spray nozzle 20 of this embodiment. Further, more preferably, L / D is preferably 0.01 or more and less than 0.50, and more preferably 0.10 or more and less than 0.30.

  Thereby, by setting L / D to the said range, the flight distance of the liquid at the time of water sprinkling and the water sprinkling range (area) can be reconciled.

  As shown in FIG. 2A, the flow direction adjustment unit 23 is connected to the downstream end of the parallel portion 22. And the flow direction adjustment part 23 has the outflow port 23a which water-sprays liquid, such as salt water, and the obstruction | occlusion part 23b.

  As shown in FIGS. 2 (b) and 3 (b), the outlet 23a of the flow direction adjusting unit 23 is closed by the closing portion 23b with a part of the circular cross section of the parallel portion 22 shown in FIG. 3 (a). It has a cross-sectional shape.

  As shown in FIG. 3B, the closed portion 23b has a shape in which a part of a circular cross section is closed by a straight line connecting two points on the circumference.

  As a result, in the flow direction adjustment unit 23, a portion of the cross section of the flow path 22a of the parallel portion 22 is closed by the closing portion 23b, whereby the water flowing straight straight from the parallel portion 22 and the portion closed by the closing portion 23b. The collision at the end of the flow may cause turbulence and the flow of water may be adjusted to adjust the flow direction in the flow path.

  Therefore, while securing the flight distance of liquids, such as salt water sprinkled from water sprinkling nozzle 20 by the water flow going straight on, the diffusivity of the liquid in the front and back direction is secured by the turbulent flow which collides with the part clogged by blockade part 23b. can do.

  Here, the closed area (area reduced from the circular cross section) by the closed portion 23 b is preferably 3% or more and less than 50% of the cross sectional area of the flow path 22 a of the parallel portion 22. The ratio of the closed area to the cross section of the flow path 22a of the parallel portion 22 is more preferably 3% or more and less than 30%, and still more preferably 5% or more and less than 15%.

  For example, when the ratio of the blockage by the blockage portion 23b is too large, the flow direction adjustment unit 23 becomes dominant in turbulence rather than the straight water flow, and a sufficient flight distance may not be secured. In addition, when the flight distance can not be secured sufficiently, it becomes difficult to secure the diffusibility in the front-rear direction.

  Therefore, in the water spray nozzle 20 of the present embodiment, the blocking ratio by the blocking portion 23 b is set to the above range.

  Thereby, since the turbulent flow generated in the flow direction adjustment unit 23 and the straight flow from the parallel portion 22 can be generated with an appropriate balance, the flight distance and back and forth of the liquid such as salt water sprinkled from the outlet 23 a It can be compatible with the water spray range (area) in the direction.

  As the shape of the closed portion in the closed portion 23b, as described above, it is preferable that the circular cross section of the parallel portion 22 be a shape in which two points on the circumference are connected by a straight line. Thereby, the closed portion 23b can be easily processed.

Moreover, the opening cross-sectional area of the flow passage 23a, except for the occlusion area by occlusion 23b from the flow path 22a of the circular cross section of the parallel portion 22 is preferably less than 3 mm ² or more 30 mm ^2. More preferably, it is preferably 5 mm ² or more and less than 15 mm ² .

  Here, when the opening cross-sectional area of the flow path 23a in the flow direction adjusting unit 23 is too small, the flow path 23a may be clogged by pebbles, precipitated salt, and the like.

  On the other hand, when the opening cross-sectional area of the flow path 23a in the flow direction adjusting unit 23 is too large, it becomes difficult to secure the flow velocity of the liquid when water is sprayed, and both the flight distance and the scattering range (area) decrease. There is a fear.

  Therefore, in the water spray nozzle 20 of the present embodiment, the opening cross-sectional area of the flow direction adjusting unit 23 including the portion closed by the closing portion 23 b is set in the above range.

  Thus, by setting the cross-sectional area of the opening in the flow direction adjustment unit 23 in the above range, while preventing the occurrence of clogging due to impurities mixed in the liquid, the distance and area (area) of the liquid during sprinkling Can be compatible.

  As described above, the angle adjustment mechanism 24 adopts a ball joint capable of adjusting the angle with respect to the valve 10 by fitting the substantially spherical main body portion 20a into the recess on the valve 10 side.

  Thereby, the direction (direction of water sprinkling) of the water sprinkling nozzle 20 can be freely adjusted in the vertical and horizontal directions and in an oblique direction by a simple configuration.

  As shown in FIGS. 2A and 2B, the water spray nozzle 20 according to the present embodiment includes an outlet 23a, an angle adjusting mechanism 24, a throttling portion 21, a parallel portion 22, and a flow direction adjusting portion 23. And have. The outlet 23a waters a liquid such as salt water to the outside. The angle adjustment mechanism 24 adjusts the angle of the tip of the valve 10. The throttling unit 21 reduces the cross section of the flow path 21 a through which the liquid flows toward the outflow port 23 a. The parallel portion 22 is disposed on the downstream side of the narrowed portion 21. The cross section of the flow passage 22a is substantially constant toward the outlet 23a to rectify the liquid. The flow direction adjusting unit 23 is disposed on the downstream side of the parallel portion 22 and blocks a part of the cross section of the parallel portion 22 on the outlet 23 a side to generate turbulent flow.

  As a result, the flow velocity increases in the throttling portion 21, and the water flow whose flow direction is substantially uniformed in the parallel portion 22 is a water flow that goes straight from the parallel portion 22 in the flow direction adjusting portion 23 arranged near the outlet 23 a. At the same time, it is possible to simultaneously generate a water flow that collides with the blocking portion 23 b and generates a turbulent flow.

  Therefore, the traveling distance of the liquid discharged from the outlet 23a can be secured by the water flow going straight, and the diffusivity in the front-rear direction of the liquid discharged from the outlet 23a by the turbulent flow generated in the flow direction adjusting unit 23 Can also be secured.

Second Embodiment
It will be as follows if the water spray nozzle contained in the valve apparatus with a water spray nozzle concerning other embodiment of this invention is demonstrated using FIG. 4 (a) and FIG.4 (b).

  The water spray nozzle 120 according to the present embodiment reduces the cross section of the flow path 21a with one throttle 21b in that the cross section of the flow path 121a is reduced in two stages by the two throttles 121ba and 121bb in the throttle part 121. This differs from the water spray nozzle 20 of the first embodiment described above.

  Specifically, as shown in FIG. 4A, the water spray nozzle 120 includes a spherical main body portion 120a, a throttling portion 121, a parallel portion 122, a flow direction adjusting portion 123, and an angle adjusting portion 124.

  The main body portion 120 a is formed in a substantially spherical shape, and internally includes a flow path formed by the narrowed portion 121, the parallel portion 122, and the flow direction adjusting portion 123. Then, the main body portion 120a is connected such that the substantially spherical portion is fitted in the concave portion provided at the tip on the valve 10 (see FIG. 1) side.

  As a result, the substantially spherical main body portion 120a is held in the recess at the valve 10 side so as to be rotatable in the vertical and horizontal directions, and the direction of the water spray nozzle 120 can be freely changed. That is, the substantially spherical main body portion 120 a and the recess on the valve 10 side function as the angle adjustment mechanism 124 of the water spray nozzle 120.

  The throttling portion 121 is provided on the side connected to the valve 10 in the inside of the main body portion 120a, as shown in FIG. 4 (a). And the constriction part 121 forms the substantially conical flow path 121a to which a flow-path cross section becomes small by a two-step toward a downstream side by two stops 121ba and 121bb.

  As a result, by reducing the cross-sectional area from the cross-sectional area of the flow path on the valve 10 side by the throttles 121ba and 121bb, the flow velocity of the liquid such as salt water flowing in the flow path 121a can be increased.

  As shown in FIG. 4A, the parallel portion 122 is connected to the end of the side (downstream side) whose cross-sectional area is reduced by the narrowed portion 121.

  Thereby, the liquid whose flow velocity has increased in the constricted portion 121a can make the flow direction substantially uniform in the parallel portion 122.

  The length L and the cross-sectional area S of the flow path 122a of the parallel portion 122 are preferably set to be within the numerical range described in the first embodiment.

  The flow direction adjusting unit 123 is connected to the downstream end of the parallel portion 122 as shown in FIG. 4A. And the flow direction adjustment part 123 has the outflow port 123a which water-sprays liquid, such as salt water, and the blockade part 123b.

  As shown in FIG. 4B, the outlet 123a of the flow direction adjusting unit 123 has a cross-sectional shape in which a part of the circular cross section of the parallel portion 122 shown in FIG. 4A is closed by the closing portion 123b. doing.

  As shown in FIG. 4B, the closed portion 123b has a shape in which a part of a circular cross section is closed by a straight line connecting two points on the circumference.

  As a result, in the flow direction adjusting unit 123, a portion of the cross section of the flow path 122a of the parallel portion 122 is closed by the closing portion 123b, whereby the water flowing straight straight from the parallel portion 122 and the portion closed by the closing portion 123b. Collisions in the water can cause turbulent water flow.

  Therefore, while securing the flight distance of liquids, such as salt water sprinkled from water sprinkling nozzle 120 by water flow going straight on, the diffusivity of the liquid in the front-back direction is secured by the turbulent flow which collides with the part clogged by clogged part 123b. can do.

  Here, it is preferable that the closed area (area reduced from the circular cross section) by the closed portion 123 b be set to be within the numerical range described in the first embodiment.

  As described above, the angle adjustment mechanism 124 employs a ball joint whose angle with respect to the valve 10 can be adjusted by fitting the portion of the substantially spherical main body portion 120 a into the recess on the valve 10 side.

  Thereby, the direction (the direction of the watering) of the watering nozzle 120 can be freely adjusted in the vertical and horizontal directions, the slanting direction, etc. by the simple configuration.

  As shown in FIG. 4A, the water spray nozzle 120 of the present embodiment includes an outlet 123a, an angle adjustment mechanism 124, a throttling portion 121, a parallel portion 122, and a flow direction adjusting portion 123. The outlet 123a waters a liquid such as salt water to the outside. The angle adjustment mechanism 124 adjusts the angle of the tip of the valve 10. The throttling portion 121 reduces the cross section of the flow path 121a through which the liquid flows toward the outflow port 123a. The parallel portion 122 is disposed downstream of the narrowed portion 121, and the cross section of the flow path 122a is substantially constant toward the outlet 123a to rectify the liquid. The flow direction adjusting unit 123 is disposed on the downstream side of the parallel portion 122 and blocks a part of the cross section of the parallel portion 122 on the outlet 123 a side to generate turbulent flow.

Thereby, the same effect as the first embodiment can be obtained.
[Other embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the above embodiment, the flow path cross section in the throttle portion 21 and the parallel portion 22 other than the flow direction adjustment portion 23 has been described by taking an example in which the cross section has a substantially circular shape. However, the present invention is not limited to this.

  For example, the cross section of the flow channel is not limited to a substantially circular shape, and may be a polygon such as an oval, a rectangle, a rhombus, or a hexagon.

(B)
In the said embodiment, the example which used the ball joint as an angle adjustment mechanism 24 for adjusting the angle of the water spray nozzle 20 with respect to the valve | bulb 10 was mentioned and demonstrated. However, the present invention is not limited to this.

  For example, if it is a mechanism which can adjust the angle of a water nozzle with respect to a valve, you may employ | adopt mechanisms other than a ball joint.

(C)
In the said embodiment, the example which scatters the salt water as a snow melting agent by the valve apparatus 50 with a water supply nozzle was mentioned and demonstrated. However, the present invention is not limited to this.

  For example, the liquid to be sprayed from the water spray nozzle is not limited to salt water, and may be tap water, warm water or the like, or another liquid such as an agricultural chemical.

(D)
In the said embodiment, the example which shape | molded the water spray nozzle 20,120 with synthetic resins, such as a polyvinyl chloride, was mentioned and demonstrated. However, the present invention is not limited to this.

  For example, a water spray nozzle formed of a metal such as aluminum may be used.

  In the present embodiment, the length (L) of the parallel portion 22, the cross-sectional area (S1) of the parallel portion 22, the ratio (L / S1), and the closed area of the flow direction adjustment portion 23 among the shapes of the sprinkle nozzle 20 described above. (S2), ratio of blockage (S2 / S1), maximum flying distance during watering (d1), minimum flying distance (d2), and four examples 1 to 4 varied with respect to the difference (d1-d2) did.

And two comparative examples 1 and 2 which changed about each above-mentioned item were prepared.
As a water spray nozzle, a polyvinyl chloride nozzle was manufactured and attached to the tip of a Φ 20 A ball valve for verification. In addition, at the time of verification, water was jetted out at a height of 0.55 m with the water spray nozzle directed along the horizontal direction, and the falling range of water against the ground surface was measured. At this time, the water pressure was 0.32 MPa.

  In addition, the water sprinkling range was measured using a measure with respect to two items, the maximum flying distance from the tip of the water sprinkling nozzle, and the coverage (maximum flying distance-minimum dropping point) assuming the lane crossing direction.

In FIG. 5, it shows about the result of having compared these Examples 1-4 with the comparative examples 1 and 2. FIG.
(Comparative example 1)
In Comparative Example 1, as shown in FIG. 5, the length (L) of the parallel part is 30 mm, the cross-sectional area of the flow path in the parallel part (S1) = 12.6 mm ² , L / S1 = 2.39, the flow direction adjustment As a result of setting the cross-sectional area (S2) of the closed part of the part (S2) = no, S2 / S1 = 100 (%), the maximum flying distance (d1) = 9.5 m, the minimum dropping point (d2) = 7.5 m, the watering range ( d1-d2) = 2.0 (m).

  That is, as shown in FIG. 6, the water spray nozzle 220 of Comparative Example 1 has a configuration without the flow direction adjustment unit, and includes the throttling portion 221 and the parallel portion 222.

The throttle unit 221 includes a throttle 221 b that reduces the cross-sectional area of the flow path 221 a.
In the parallel portion 222, the cross-sectional area of the flow path 222a is substantially constant toward the outlet.

  As a result, in the configuration of Comparative Example 1, the maximum flying distance was sufficient because there was no flow direction adjusting unit, but it was found that the difference from the minimum drop point was small and the watering range was narrow.

(Comparative example 2)
In Comparative Example 2, as shown in FIG. 5, the length (L) of the parallel portion is 3 mm, the cross-sectional area of the flow path in the parallel portion (S1) is 12.6 mm ² , L / S 1 is 0.24, and the flow direction is adjusted. As a result of setting the cross-sectional area (S2) of the closed part of the part = no, S2 / S1 = 100 (%), the maximum flying distance (d1) = 8.5 m, the minimum dropping point (d 2) = 6.1 m, the watering range ( d1-d2) = 2.4 (m).

  That is, as shown in FIG. 7, the water spray nozzle 320 of the comparative example 2 has a configuration without the flow direction adjusting unit as in the comparative example 1, and includes the throttling portion 321 and the parallel portion 322. Further, in the configuration of Comparative Example 2, the length of the parallel portion 322 is shorter than that of Comparative Example 1 described above.

  The throttling portion 321 includes two throttles 321ba and 321bb that reduce the cross-sectional area of the flow path 321a.

In the parallel portion 322, the cross-sectional area of the flow passage 322a is substantially constant toward the outlet.
As a result, in the configuration of Comparative Example 2, as in Comparative Example 1, the maximum flying distance was sufficient because there was no flow direction adjusting unit, but the difference with the minimum drop point was small and the watering range was narrow. I understood.

Example 1
In the first embodiment, as shown in FIG. 5, the length (L) of the parallel part is 30 mm, the cross-sectional area of the flow path in the parallel part (S1) = 12.6 mm ² , L / S1 = 2.39, the flow direction adjustment As a result of setting the cross-sectional area (S2) = 6.3 mm ² and S2 / S1 = 50 (%) of the closed portion of the part, the maximum flying distance (d1) = 8.6 m, the minimum dropping point (d2) = 4.9 m, Watering range (d1-d2) = 3.7 (m).

  As a result, in comparison with the results of Comparative Examples 1 and 2, in Example 1, since the flow direction adjustment unit is provided, the maximum flight distance is sufficient, and the maximum flight distance and the minimum drop point are obtained. Since the difference can also be increased, it has been found that the watering range (area) can be expanded.

  In particular, the present embodiment 1 has the same shape as the comparative example 1 except for the presence or absence of the flow direction adjusting unit, but the provision of the flow direction adjusting unit increases the water spray range from 2.0 m to 3.7 m. It was possible.

(Example 2)
In Example 2, as shown in FIG. 5, the length (L) of the parallel part is 5 mm, the cross-sectional area of the flow path in the parallel part (S1) = 12.6 mm ² , L / S1 = 0.24, the flow direction adjustment As a result of setting the cross-sectional area (S2) = 6.3 mm ² and S2 / S1 = 50 (%) of the closed portion of the part, the maximum flying distance (d1) = 8.4 m, the minimum dropping point (d2) = 3.2 m, The water spray range (d1-d2) = 5.2 (m).

  As a result, as compared with the results of Comparative Examples 1 and 2, in the present Example 2, since the flow direction adjustment unit is provided, the maximum flight distance is sufficient, and the maximum flight distance and the minimum drop point are Since the difference can also be increased, it has been found that the watering range (area) can be expanded.

  In particular, in the second embodiment, the same shape as the comparative example 2 is provided except for the presence or absence of the flow direction adjusting unit, but the provision of the flow direction adjusting unit increases the water spray range from 2.4 m to 5.2 m. It was possible.

  In Example 2, when the length of the parallel portion was changed from 30 mm to 5 mm in Example 1, the water spray range could be increased from 3.7 m to 5.2 m in Example 1. .

(Example 3)
In Example 3, as shown in FIG. 5, the length (L) of the parallel part is 30 mm, the cross-sectional area of the flow path in the parallel part (S1) = 12.6 mm ² , L / S1 = 2.39, the flow direction adjustment As a result of setting the cross-sectional area (S2) = 1.26 mm ² , S2 / S1 = 10 (%) of the closed portion of the part, the maximum flying distance (d1) = 9.5 m, the minimum dropping point (d2) = 6.0 m, The water spray range (d1-d2) was 3.5 (m).

  As a result, as compared with the results of Comparative Examples 1 and 2, in the third embodiment, since the flow direction adjusting unit is provided, the maximum flight distance is sufficient, and the maximum flight distance and the minimum drop point are obtained. Since the difference can also be increased, it has been found that the watering range (area) can be expanded.

  In particular, in the third embodiment, the same shape as the comparative example 1 is provided except for the presence or absence of the flow direction adjusting unit, but the provision of the flow direction adjusting unit increases the water spray range from 2.0 m to 3.5 m. It was possible.

  Further, in the third embodiment, when the blocking ratio of the area of the blocking portion of the flow direction adjusting unit is changed from 50% to 10% of the first embodiment, the watering range is substantially equal to 3.7 m of the first embodiment. It was 3.5m.

(Example 4)
In Example 4, as shown in FIG. 5, the length (L) of the parallel part is 5 mm, the cross-sectional area of the flow path in the parallel part (S1) = 12.6 mm ² , L / S1 = 0.24, the flow direction adjustment As a result of setting the cross-sectional area (S2) = 1.26 mm ² , S2 / S1 = 10 (%) of the closed part of the part, the maximum flying distance (d1) = 9.5 m, the minimum dropping point (d2) = 3.0 m, Watering range (d1-d2) = 6.5 (m).

  As a result, as compared with the results of Comparative Examples 1 and 2, in the fourth embodiment, since the flow direction adjusting unit is provided, the maximum flight distance is sufficient, and the maximum flight distance and the minimum drop point are obtained. Since the difference can also be increased, it has been found that the watering range (area) can be expanded.

  In particular, in the fourth embodiment, the same shape as the comparative example 2 is provided except for the presence or absence of the flow direction adjusting unit, but the provision of the flow direction adjusting unit increases the water spray range from 2.4 m to 6.5 m. It was possible.

  Further, in the fourth embodiment, when the blocking ratio of the area of the blocking portion of the flow direction adjusting portion is changed from 50% to 10% of the second embodiment, the water spray range is from 5.2 m to 6.5 of the second embodiment. It could be up to 5m.

  Furthermore, in Example 4, when the length of the parallel portion was changed from 30 mm to 5 mm in Example 3, the water spray range could be increased from 3.5 m to 6.5 m in Example 3. .

(Summary)
From the above results, as in the present invention, by providing the flow direction adjusting unit for shielding a part of the straight moving water flow in the vicinity of the outlet, compared with the configuration of the comparative example without the flow direction adjusting unit. The water spray range could be expanded from 2.0 to 2.4 m to 3.5 to 6.5 m.

  The valve device with a water sprinkling nozzle of the present invention has the effect of being able to balance the flying distance of water when sprinkling and the water sprinkling range (area), and thus is widely applicable as a water sprinkling device for sprinkling liquid. .

DESCRIPTION OF SYMBOLS 10 valve 11 main-body part 12 connection part 13 bending part 14 lever 20 sprinkling nozzle 20a main-body part 21 throttling part 21a flow-path 21b throttling 22 parallel part 22a flow-path 23 flow direction adjustment part 23a outflow port 23b blockage part 24 angle adjustment mechanism 50 water-sparing nozzle Valve device 120 Water sprinkling nozzle 120a Body part 121 Throttle part 121a Channel 121ba First throttle 121bb Second throttle 122 Parallel part 122a Channel 123 Flow direction adjustment part 123a Outlet 123b Blockage part 124 Angle adjustment mechanism

Claims (7)

With the valve,
A sprinkling nozzle attached to a tip of the valve and sprinkling the liquid at a flow rate adjusted by the valve;
Equipped with
The water sprinkling nozzle has an outlet for sprinkling the liquid to the outside, an angle adjusting mechanism for adjusting the angle with respect to the tip of the valve, and a throttle for reducing the cross section of the flow path through which the liquid flows toward the outlet. Part, a parallel part disposed downstream of the constriction part in the channel, the cross section of the channel being substantially constant toward the outlet, and rectifying the liquid, and the parallel part in the channel A flow direction adjusting unit disposed on the downstream side of the part and closing a part of the cross section of the parallel part on the outlet side to adjust the flow direction in the flow path;
Valve device with water spray nozzle. In the parallel portion, the length of the flow path / the cross-sectional area of the flow path is 0.01 or more and less than 2.00.
The valve apparatus with a water spray nozzle according to claim 1. The closed area of the cross section in the flow direction adjusting unit is 3% or more and less than 50% of the flow passage cross-sectional area of the parallel portion.
The valve apparatus with a water spray nozzle according to claim 1 or 2. The cross-sectional area of the hole in the flow direction adjusting unit is 3 mm ² or more and less than 30 mm ² .
The valve apparatus with a water spray nozzle according to any one of claims 1 to 3. The material of the water spray nozzle is a synthetic resin,
The valve apparatus with a water spray nozzle according to any one of claims 1 to 4. The angle adjustment mechanism includes a recess formed on the nozzle side and a ball joint fitted to the recess.
The valve apparatus with a water nozzle according to any one of claims 1 to 5. A sprinkling nozzle attached to a tip of a valve and sprinkling the liquid at a flow rate adjusted by the valve,
An outlet for sprinkling the liquid to the outside;
An angle adjustment mechanism for adjusting the angle of the tip of the valve;
A throttling portion that reduces the cross section of the flow path through which the liquid flows toward the outlet;
A parallel portion disposed downstream of the throttling portion in the flow path, the cross section of the flow path being substantially constant toward the outlet, and rectifying the liquid;
A flow direction adjusting unit which is disposed on the downstream side of the parallel portion in the flow path, and closes a part of the cross section of the parallel portion on the outlet side to adjust the flow direction in the flow path;
Sprinkler nozzle equipped with.

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