JP4762221B2 - Continuous nozzle - Google Patents

Description

  The present invention relates to a continuous nozzle, and more particularly to a continuous nozzle in which a plurality of nozzles are attached to a water supply pipe of a water discharge facility as a continuous unit.

  Some conventional continuous nozzles are provided with a number of long-throwing nozzles that extend slightly radially from a substantially cylindrical main body attached to a water supply pipe.

  In such a continuous nozzle having a large number of nozzles, it is often necessary to adjust the angle of the nozzle depending on the installation environment. Therefore, each long throw nozzle is connected to the head body via the angle adjusting mechanism. Attaching and each long-throw nozzle can be adjusted in angle. Although the nozzle angle may be adjusted both horizontally and vertically, it is particularly important to adjust the vertical or elevation angle.

  FIG. 26 and FIG. 27 show a nozzle 51 using a ball joint as an example of such a nozzle angle adjusting mechanism.

  A spherical bulge, which is a ball 52, is provided at the root of the nozzle 51, and the ball 52 is rotatably fitted in a socket 54 of an adapter 53 connected to a water supply pipe (not shown). The cap 55 is fitted into the socket portion 54. With such a ball joint, the angle can be adjusted in any direction.

  Since such a continuous nozzle has a number of nozzles each having an independent angle adjustment mechanism, the operation of adjusting the direction of the nozzles one by one at the installation site must be performed on each nozzle, Installation work takes time.

  In addition, when a ball joint is used, even if only the elevation adjustment is attempted, the ball joint may be accidentally rotated in the horizontal direction, which makes the operation difficult. In addition, since there are many nozzles protruding from the head body, the overall dimensions of the continuous nozzles are increased.

Japanese Patent Publication No.58-10111

  Also, in general, the water discharge pattern by the continuous nozzle is because the resistance of air to the water discharge is large at the end sprinkling region, and the flow velocity decreases due to flow resistance, separation, and vortex near the pipe wall in the water supply pipe. Range tends to be shorter.

  On the contrary, in the central water spray area of the water discharge pattern, the resistance of air to water discharge is small, and in the central part in the water supply pipe, the flow velocity does not decrease due to flow resistance, separation, and vortex, so the range is not easily shortened. As a result, the water discharge pattern did not become as desired, and the design was difficult.

  Accordingly, an object of the present invention is to eliminate the problems of the conventional continuous nozzles as described above, and to obtain a continuous nozzle that has a simple water discharge range and can easily obtain a desired water discharge pattern with a simple structure. It is.

  According to the present invention, means for solving the above-described problems are as follows.

A water injection nozzle comprising: a unit base provided at a tip portion of a water supply pipe; and a connection nozzle that is attached to the unit base so as to close an open end of the water supply pipe and includes a plurality of water injection nozzles. Is formed in the connecting unit so as to pass through the primary side and the secondary side, and the plurality of water injection nozzles of the connecting unit are provided in the center in the height direction of the connecting unit, and in the central part of the cross section of the water supply pipe A first water injection nozzle that is open on the side, and a second water injection nozzle that is provided in the vertical direction of the first water injection nozzle and that opens on the side closer to the inner wall of the cross section of the water supply pipe. 1 water injection nozzle, with respect to the axis of the twin unit, with an opening of the secondary side to the twin unit such that the inclination angle with respect to the front direction increases, the ends watering territory water discharge pattern Oriented in a second water injection nozzle, with respect to the axis of the twin unit, with an opening of the secondary side to the twin unit such that the inclination angle with respect to the front direction becomes smaller, the central watering area of drainage pattern A strong flow that does not decrease the flow velocity is supplied to the central part of the cross section of the water supply pipe, and a weak flow with a low flow speed is supplied to the portion near the pipe inner wall of the cross section of the water supply pipe due to the resistance of the pipe inner wall. It is a feature.

  Of the multiple water injection nozzles in the continuous unit, the water injection nozzle that opens at the center of the cross section of the water supply pipe is directed toward the outer peripheral area of the water discharge pattern, and is opened at the portion of the water supply pipe cross section near the pipe inner wall where the flow rate of water discharge is small Since the water spray nozzle is directed toward the inner region of the water discharge pattern, the water discharge range is uniform and the desired water discharge pattern can be easily obtained with a simple structure.

Embodiment 1 FIG.
1 and 2 show a continuous nozzle according to an embodiment of the present invention. In this continuous nozzle, a head main body 2 that can be connected to a water supply pipe 1 of a water discharge facility has a plurality of branched water supply pipes 3. Is provided. The open ends of these water supply pipes 3 are closed by a circular end plate 5 attached to the water supply pipe 3 so as to be adjustable in elevation by an elevation adjustment mechanism 4 which will be described later. Each end plate 5 has a plurality of water injection nozzles 6. A continuous unit 7 having the above is attached.

  Thus, in the continuous nozzle of this invention, the several nozzle 6 is formed as the continuous unit 7 provided in the end plate 5 attached so that the open end of the water supply pipe 3 might be closed. Further, the plurality of water injection nozzles 6 are collected as a plurality of connected units 7 each having a plurality of water injection nozzles 6, and each connected unit 7 is a water supply pipe which is a unit base via an elevation adjustment mechanism 4 which will be described later. 3 is attached.

  3 and 4 show details of the connecting unit 7, FIG. 3 is a cross-sectional view showing the XX cross section (horizontal cross section) of FIG. 2, and FIG. 4 is a cross section showing the YY cross section (vertical cross section) of FIG. FIG. In these drawings, the unit base 8 is shown as an independent part, but in the structure of FIGS. 1 and 2, the unit base 8 is an integrally continuous tip portion of the branched water supply pipe 3. In the case of a continuous nozzle having an independent unit base 8 as shown in FIGS. 3 and 4, the unit base 8 is used in a sealed connection by a connecting means such as a taper screw (not shown).

  In the illustrated continuous nozzle, a cylindrical portion 10 of a nozzle block 9 is loosely inserted into an annular unit base 8 to be connected (not shown) to a water supply pipe of a water discharge facility. A sealing device 11 such as a V-packing is provided between the cylindrical portion 10 of the block 9 and the water supply pressure is applied to the unit base. The prismatic portion 12 of the block 9 passes through the end plate 5. The nozzle block 9 is fixed to the end plate 5 with screws 13, and a plurality (eight in the illustrated example) of water jet nozzles 6 each set at a predetermined angle are formed.

  As shown in FIG. 4, the upper and lower sides of the end plate 5 have seating surfaces of the cylindrical surface-shaped concave portions 14 (the concave portions of the axis perpendicular to the cross section of FIG. 4) at both ends in the radial direction, that is, the YY cross-sectional direction. A long slot 15 is provided in the left and right (in FIG. 4), and an adjustment bolt 17 having a washer 16 having a cylindrical surface similar to that of the recess 14 is loosely passed through the slot 15. It is fixed to the unit base 8 by screw engagement. The long hole 15 is a hole formed long in the direction (the left-right direction in FIG. 4) that connects the two adjusting bolts 17. In addition, the mechanism provided with the adjusting bolt 17 and the sealing device is an elevation adjusting mechanism. Further, at both ends of the radial direction (X-X cross-sectional direction) perpendicular to the radial direction where the adjustment bolts 17 of the end plate 5 are provided, screw holes 18 of the end plate 5 are provided at the ends as shown in FIG. An adjustment screw 19 that is a screw screw engaged with the screw is provided. The spherical or conical tip of the adjusting screw 19 is in contact with the bottom of the U-shape of a pair of U-shaped notch step portions 21 formed on both end faces of the unit base 8 as shown in FIG. The plate 5 is configured to be able to swing with respect to the unit base 8 with this tip as a fulcrum 20. Next, the operation will be described. When the adjustment bolt 17 on the right (lower in the attached state of FIG. 2) is loosened and the adjustment bolt 17 on the left (upper in FIG. 2) is tightened, Is inclined to the left (upper side in FIG. 2), so that the elevation angle of all the water spray heads 6 formed in the nozzle block 9 can be adjusted in one operation. By the way, when adjusting the up and down direction, in actuality, when the lower adjusting bolt 17 in FIG. 2 is loosened, the end plate 5 and the nozzle block 9 play together with the fulcrum 20 and play the long hole 15 downward. Therefore, the end plate 5 is lifted and held so as to swing upward about the fulcrum 20 while loosening the lower adjustment bolt 17. Thereafter, the upper adjustment bolt 17 is tightened until the pair of adjustment screws 19 are moderately stretched. Repeat this as many times as necessary to adjust the height. When adjusting the elevation to the lower side, loosen the upper adjustment bolt 17, but at this time, it is lowered naturally by its own weight such as the nozzle block 9, etc., while holding the lower end of the end plate 5 so that the fulcrum 20 does not shift, Next, the lower adjusting bolt 17 is tightened until the pair of adjusting screws 19 are moderately stretched. In the above adjustment, the end plate 5 swings around the fulcrum 20 in FIG. 5, so that the swing around the fulcrum 20 in FIG. 4 is as shown by arrows A and B, and is fixed. The inner wall of the elongated hole 15 does not come into contact with the bolt 17 to limit the swing. Further, the notch width of the U-shaped notch step portion 21 is sufficiently wide in the swing direction, and does not limit the swing of the adjusting screw 19 that swings around the fulcrum 20 at the bottom of the step portion 21. The fulcrum 20 is preferably provided on the side closer to the sealing device 11 than the upper end surface 22 of the unit base 8. As shown in FIG. 3, the two fulcrum 20 is on the center plane formed by the sealing device 11. It is good to be in. This is because if the sealing device 11 is near the center of swing of the continuous unit, the displacement due to swing is very small. That is, in the swinging around the fulcrum 20 in FIG. 4, the swinging of the cylindrical portion near the sealing device is as shown by arrows C and D, and the displacement is almost only up and down (in the axial direction). Since there is little displacement in the width direction, that is, left and right absorbed by the sealing device, the elevation adjustment angle can be made larger. In addition, there is room for adjusting the elevation, and the reliability of the sealing force can be increased.

  Thus, according to the continuous nozzle of this invention, the several water injection nozzle 6 is formed in the one nozzle block 9, and this nozzle block 9 is provided in the end plate 11 attached so that the open end of the water supply pipe 3 may be closed. Since the number of adjusting mechanisms is small, the structure is simple, the adjustment work is easy, the connecting head is small, and it is easy to change and adjust the directions of multiple nozzles at the same time. Miniaturization can be easily performed. In the first embodiment, the angle is adjusted only by raising and lowering. However, the notch width (particularly left and right in FIG. 3) of the notch step portion 21 with which the adjusting screw 19 abuts is formed larger, and the length of the end plate is increased. By forming the hole 15 as a large hole having a spherical bearing surface and further including an adjusting bolt 17 having a washer having a spherical surface having a diameter larger than that of the large hole, it is possible to provide a continuous nozzle that can be adjusted left and right. That is, after adjusting up and down (up and down), in FIG. 3, the right adjustment screw 19 is loosened to shorten the length from the end plate 5 to the fulcrum 20, that is, the fulcrum length, and the left adjustment screw 19 The length of the left fulcrum is increased by tightening until the pair of adjusting bolts 17 firmly hold the end plate 5 away from the unit base 8. In this way, the nozzle block 9 is adjusted to the right. The direction to the left is adjusted in the same way. At this time, the end plate 5 and the pair of adjusting screws 19 are tilted to the right together with the nozzle block 9, but a left-right swinging space is formed in the notch width of the left notch step 21. There is no restriction on the left and right swinging of the adjusting screw 19. If the adjustment screw 19 is adjusted, that is, the fulcrum position can be adjusted in this way, the watering can be adjusted in the left-right direction, and a pseudo adjustment can be easily performed with a simple structure.

Embodiment 2. FIG.
6 to 8 are views showing another embodiment of the continuous nozzle of the present invention, in which the left is installed on the upper side and the right is installed on the lower side. This continuous nozzle has the same basic configuration as the continuous nozzle shown in FIGS. The difference is that, firstly, the unit base 8 is not a part of the water supply pipe 3, but is an independent part, and is configured to be screwed into the end of the water supply pipe 3, for example, and sealed. That is. Secondly, the nozzle block 24 is not supported by a separate and independent end plate 5 like the nozzle block 9, but the nozzle block 24 is a cylindrical member as a whole, and is integrally formed from the nozzle block 24. The point is that two pairs of arms 25 and 26 extending in a cross shape in the radial direction are provided. Third, the fulcrum 27 for supporting the swinging of the nozzle block 24 has a pair of protrusions 28 and arms 26 protruding in the axial direction of the cylindrical unit base 8 from the left and right ends of the upper end surface 22 of the unit base 8. It is a contact part.

  The other points are the same as those of the continuous nozzle shown in FIGS. 1 to 5, and when adjusting the elevation, one side, for example, the right side (lower side in the installed state) adjustment bolt 17 in FIG. When the adjustment bolt 17 on the upper side in the installed state is tightened, the connecting unit 7 is tilted upward in the installed state as shown by a broken line in FIG. 6, so that the angles of all the water jet nozzles 6 formed in the nozzle block 24 are set once. Can be adjusted in the work. A sealing device 11 is also provided. When the elevation is adjusted as described above, the swing support point 27 is provided at a position close to the surface of the nozzle block 9 or at the rear of the nozzle block 9 and at a position away from the front and back, so that the nozzle block around the sealing device 11 is located. In FIG. 9, the sealing gap widens on the upper side, and the sealing gap narrows on the lower side. However, since the V packing which is the sealing device 11 is widened by the feed water pressure even if the gap is widened, it does not leak, and even if it becomes narrow, it is crushed by work and keeps the seal.

Embodiment 3 FIG.
9 to 11 show another embodiment of the continuous nozzle of the present invention. This continuous nozzle has the same basic configuration as the continuous nozzle shown in FIGS. The first difference is that the nozzle block 24a in this embodiment is not a pair of arms 25 and 26 extending from the nozzle block 24a, but a pair of adjustments extending in opposite directions in the radial direction. Only the arm 25 is provided. Secondly, a fulcrum 30 for swinging support of the nozzle block 24a is integrally formed from the left and right ends of the unit base 8 so as to protrude upward in the axial direction of the unit base 8 parallel to each other above the upper end surface 22. This is a point constituted by a pair of pins 32 screwed into the distal end of the support arm 31 radially inward. The pin 32 is inserted into a hole 33 formed in the left and right ends (shown up and down in FIG. 11) of the cylindrical portion of the nozzle block 24a, and the nozzle block 24a swings around the pin 32. I can do it.

  The other points are the same as those of the continuous nozzle shown in FIGS. 1 to 5. If one of the lower adjustment bolts 17 is loosened in FIG. 10, for example, and the other upper adjustment bolt 17 is tightened, the continuous unit 7 is 10, the angle of all the water jet nozzles 6 formed in the nozzle block 24a can be adjusted in one operation. Similar to the previous example, a sealing device 11 is also provided.

Embodiment 4 FIG.
12 to 16 show another embodiment of the continuous nozzle of the present invention. In this continuous nozzle, the open end portion of the water supply pipe 3 serves as a unit base 35. Between the unit base 35 and the continuous unit 36 shown in FIG. A wedge-shaped spacer 37 as shown in FIG. 15 for adjusting the elevation angle is inserted, and the connecting unit 36 is fixed to the unit base 35 together with the wedge-shaped spacer 37 by a mounting device 38 such as a mounting bolt.

  The holes formed in the wedge-shaped spacer 37 and the connecting unit 36 for passing the mounting bolt 38 are firmly fixed even when mounted at an angle with respect to the unit base 35. The through hole is a long hole (see FIG. 13). As shown in FIG. 16, the flange portion 39 of the connecting unit 36 has a bulging portion 40 having a bowl-shaped cylindrical surface around the through hole. The cylindrical surface of the bulging portion 40 firmly contacts the bottom surface of the head of the mounting bolt 38 even when the connecting unit 36 is tilted, thereby ensuring a fixed relationship. In this way, in this continuous nozzle, the elevation adjustment mechanism has a wedge-shaped spacer 37 that adjusts the elevation angle of the continuous unit 36, and an attachment that fixes the continuous unit 36 to the unit base 35 via the wedge-shaped spacer 37. Device 38.

  The wedge-shaped spacer 37 can be made of a packing material such as relatively hard rubber, synthetic resin, or metal. However, as shown in FIG. 17, an “O” ring is provided between the unit base 35, the wedge-shaped spacer 37 and the connecting unit 36. It is also possible to insert a sealing device 41 such as a complete seal. Further, if an attachment screw (not shown) for attaching the continuous unit 36 to the unit base 35 passes through the outside of the wedge-shaped spacer 37 without passing through the wedge-shaped spacer 37, the attachment screw is passed through the wedge-shaped spacer 37. Therefore, the wedge-shaped spacer 37 can be attached and detached simply by loosening without removing the mounting screw.

Embodiment 5 FIG.
18 to 25 show a continuous unit 44 that can be used in a continuous nozzle according to another embodiment of the present invention. As shown in FIGS. 18 and 19, the continuous unit 44 includes a nozzle block 45 having a substantially rectangular planar shape, and three water spray nozzles 46 in total of three on each side along a substantially rectangular shape. . These water injection nozzles have different directions as can be understood from the cross-sectional views shown in FIGS. That is, as shown in FIG. 20 and FIG. 22, water spray nozzles directed to the central watering region of the fan-like water discharge pattern as shown in FIG. 23 obtained by the continuous nozzle using the continuous unit 44 are as shown in FIGS. In addition, the nozzle has a relatively small inclination angle with respect to the front direction of the continuous unit 44, and the nozzle inlet opens at a portion where the flow rate of water discharge is small near the inner wall of the water supply pipe cross section as shown in FIGS. Use a water jet nozzle. On the other hand, the water spray nozzle directed toward the end watering area of the water discharge pattern of FIG. 23 is a nozzle having a relatively large inclination angle as shown in FIG. 21, and in FIGS. 24 and 25, It is set as the water-injection nozzle which the nozzle inflow port opened in the center part of the water supply piping cross section of a water supply piping cross section as shown.

  In general, the water discharge pattern by the continuous nozzle has a large range because the air resistance against water discharge is large at the end sprinkling area, and the flow velocity decreases due to flow resistance, separation, and vortex near the pipe wall in the water supply pipe. Tend to be shorter. On the contrary, in the central water spray area of the water discharge pattern, the resistance of air to water discharge is small, and in the central part in the water supply pipe, the flow velocity does not decrease due to flow resistance, separation, and vortex, so the range is not easily shortened. As a result, the water discharge pattern did not become as desired, and the design was difficult.

  According to the continuous nozzle of the present invention, a strong flow as shown in FIGS. 24 and 25 is discharged from the water injection nozzle having the nozzle inlet near the center of the continuous unit toward the end of the water discharge pattern, and is weak. Since the water is discharged from the water injection nozzle having the nozzle inlet at the peripheral portion toward the center of the water discharge pattern, the water discharge range is uniform and it is easy to obtain a desired water discharge pattern. In addition, although the above-mentioned Embodiment 5 demonstrated the case of the fan-shaped water discharge pattern, a cone shape and another water discharge pattern may be sufficient.

  As described above, the effects of the continuous nozzle of the present invention are as follows. Since a plurality of nozzles are formed in a continuous unit provided on an end plate that can be attached so as to close the open end of a water supply pipe of a water discharge facility, the structure becomes simple, and it is easy to change the direction of a plurality of nozzles all at once. is there.

  Since a plurality of nozzles are formed in a continuous unit provided on an end plate that can be attached so as to close the open end of a water supply pipe of a water discharge facility, the structure becomes simple, and it is easy to change the direction of a plurality of nozzles all at once. is there.

  A plurality of water injection nozzles are grouped into a plurality of connected units each having a plurality of water injection nozzles, and the above-mentioned connected units are mounted on a unit base with an elevation adjustment mechanism, so the number of adjustment mechanisms is small and the structure is simple The adjustment work is easy, and the overall dimensions of the continuous nozzle are small and compact.

  The elevation adjustment mechanism includes an adjustment bolt that adjusts the elevation of the continuous unit and a sealing device that seals between the continuous unit and the unit base, so that the structure is simple and can be manufactured at low cost. The size of the continuous nozzle can be reduced.

  Since the fulcrum is provided on the unit base and supports the unit so that it can swing, the structure is simple and can be manufactured at low cost, and it can be firmly fixed to the adjusted position. Work is easy.

  Since the fulcrum is provided closer to the sealing device than the end face of the unit base, the sealing reliability can be improved with a simple structure, and the displacement due to swinging can be reduced so that the height can be adjusted. A large angle can be taken.

  Since the position of the fulcrum is adjustable, delicate adjustment can be easily performed with a simple structure.

  The raising / lowering adjustment mechanism is inserted between the unit base and the connecting unit, and a wedge-shaped spacer for adjusting the raising / lowering angle of the connecting unit, and the connecting unit via the wedge-shaped spacer. Since the structure is simple and can be manufactured at low cost, there is no risk of displacement after adjustment, the continuous nozzle is compact, and the aesthetics are excellent.

  Since the elevation adjustment mechanism further includes a sealing device between the unit base and the connecting unit and the wedge-shaped spacer, the reliability of the sealing device can be enhanced with an inexpensive and simple structure.

It is a front view which shows the water discharge head using the continuous nozzle of one Embodiment of this invention. It is a side view which shows the water discharge head of FIG. FIG. 3 is a cross-sectional view of a continuous nozzle taken along line XX in FIG. 2. FIG. 3 is a cross-sectional view of a continuous nozzle taken along line YY in FIG. 2. It is a partial side view which shows the fulcrum of the continuous nozzle of FIG. It is a side view corresponding to FIG. 4 which shows the continuous nozzle of another embodiment of this invention. It is sectional drawing of the continuous nozzle of FIG. It is a front view of the continuous nozzle of FIG. It is a side view which shows the water discharge head using the continuous attachment nozzle of another embodiment of this invention. FIG. 10 is a side view of the continuous nozzle of FIG. 9. It is sectional drawing of the continuous nozzle along the ZZ line of FIG. It is a top view which shows the water discharge head using the continuous attachment nozzle of another embodiment of this invention. It is a perspective view of the continuous nozzle of FIG. It is a partial side view of the continuous nozzle of FIG. It is a perspective view of the spacer of the continuous nozzle of FIG. It is a fragmentary sectional view explaining the long hole of the continuous nozzle of FIG. It is a partial side view which shows another embodiment of the continuous nozzle of FIG. It is a front view which shows the continuous nozzle of another embodiment of this invention. It is a top view of the continuous nozzle of FIG. It is sectional drawing of the continuous nozzle along the AA line of FIG. It is sectional drawing of the continuous nozzle along the BB line of FIG. It is sectional drawing of the continuous nozzle along the CC line of FIG. It is a figure which shows the water discharge pattern by the continuous nozzle of this invention. It is a schematic sectional drawing explaining the case of the water supply piping which bent the effect | action of the continuous nozzle of FIG. It is a schematic sectional drawing explaining the case of the water supply piping which a diameter spreads rapidly for the effect | action of the continuous nozzle of FIG. It is a perspective view of the nozzle which used the ball joint which can be used for the conventional water discharge head as an angle adjustment mechanism. It is a longitudinal cross-sectional view of the ball joint of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water supply pipe, 4 Height adjustment mechanism, 5 End plate, 6 Nozzle (water-injection nozzle), 7 Connection unit, 8 Unit base, 11 Sealing device, 17 Adjustment bolt, 20 Support point, 22 Base end surface, 37 Wedge type Spacer, 38 mounting device, 41 sealing device.

Claims (1)

In a connected nozzle having a unit base provided at a tip portion of a water supply pipe, and a connected unit that is attached to the unit base so as to close an open end of the water supply pipe and collects a plurality of water injection nozzles.
The water injection nozzle is formed in the continuous unit so as to penetrate the primary side and the secondary side,
The plurality of water injection nozzles of the continuous unit are provided at the center in the height direction of the continuous unit, the first water injection nozzle having a primary side open at the center of the cross section of the water supply pipe, and the first water injection Each of which is provided in the vertical direction of the nozzle, and is composed of a second water injection nozzle whose primary side is open at a portion closer to the inner wall of the cross section of the water supply pipe,
The first water spray nozzle is provided with a secondary-side opening in the connected unit so that an inclination angle with respect to the front direction with respect to the axial center of the connected unit is increased , and the water spraying pattern has an end spraying region. Directed,
The second water spray nozzle is provided with a secondary side opening in the connected unit so that an inclination angle with respect to the front direction with respect to the axial center of the connected unit is small , and directed toward a central water spray region of the water discharge pattern. And
A strong flow that does not decrease the flow velocity is supplied to the central portion of the cross section of the water supply pipe, and a weak flow whose flow velocity is reduced due to resistance by the inner wall of the pipe is supplied to the portion near the inner wall of the pipe of the cross section of the water supply pipe A continuous nozzle.

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