JP2007125456A - Sprinkler nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sprinkler nozzle enabling a water spray in spray form by a nozzle cylinder connected to a nozzle body even if the pressure of pressured water is low. <P>SOLUTION: In the sprinkler nozzle 11, the nozzle body 12 comprises an inner cylinder member 20 wherein a hose connection 17 is provided at a rear end, and a valve body 19 at a tip side, and an outer cylinder member 22 outer-fitting the inner cylinder member 20 so as to screw-advance and retreat axially with rotation, and the nozzle cylinder 13 connected detachably to the tip side of the outer cylinder member 22 is combined with it for use. A flow rate increasing member 14 wherein the outer diameter abuts to an internal diameter surface of an internal passage in the nozzle cylinder 13 in a state that the nozzle cylinder 13 is connected to the tip side of the outer cylinder member 22 is incorporated detachably into the internal passage of the nozzle cylinder 13, and a plurality of water passing grooves 33 are formed on an outer diameter surface of the flow rate increasing member 14 so as to incline against an axial direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a watering nozzle capable of freely selecting the form of watering such as straight or spraying according to the purpose as well as the water flow when performing washing or watering using pressure water.

  For example, when washing automobiles using high-pressure water washing power, adjust the watering nozzle attached to the tip of the hose, and adjust the water flow as well as water spray such as straight or spray in response to changes in the washing process. The form is selected.

  Conventionally, as shown in FIG. 4, the watering nozzle for use as described above includes a hose connection portion 1 at the rear end and a valve body 3 via a valve holding portion 2 that allows water discharge from the front end to the front end side. An inner cylinder member 4 provided, and a valve seat 5 provided at the distal end portion when fitted to the inner cylinder member 4 so as to advance and retreat in the axial direction by rotation, are provided at the forward end position with respect to the inner cylinder member 4. The nozzle body 7 is formed by an outer cylinder member 6 which is in contact with the valve body 3 to be closed and is opened with the valve seat 5 separated from the valve body 3 in a retracted position with respect to the inner cylinder member 4. A separate nozzle cylinder 8 which is detachably connected to the distal end side of the cylindrical member 6 and whose inner diameter of the internal passage is narrowed to a small diameter on the distal end side can be used in combination.

  The sprinkling nozzle as described above has a valve seat 5 provided at the front end portion with a pressure water supply hose connected to the rear end hose connection portion 1 of the inner cylinder member 4 of the nozzle body 7 and the outer cylinder member 6 set to the forward position. When the valve body 3 is in contact with the valve body 3, water spraying is stopped, and when the outer cylinder member 6 is moved backward to the valve opening position, the pressure water is ejected from between the valve body 3 and the valve seat 5. Water spraying or spraying is performed, and by selecting the moving position of the outer cylinder member 6 and adjusting the valve opening amount, watering with different water flow and water amount can be obtained.

  Further, if a separately prepared nozzle cylinder 8 is connected to the tip of the outer cylinder member 6 of the nozzle body 7, straight water discharge can be obtained from the tip of the nozzle cylinder 8 by the valve opening.

  By the way, when the conventional watering nozzle as described above is used only by the nozzle body 7, if the pressure water pressure is low, the distance of water spraying from between the valve seat 5 and the valve body 3 cannot be obtained, and the spraying nozzle The state will not be obtained.

  Moreover, when the nozzle cylinder 8 is connected to the nozzle body 7 and used, spraying cannot be obtained only by straight water discharge. Thus, the conventional watering nozzle is used when obtaining spray. There is an inconvenience.

  Then, the subject of this invention is providing the watering nozzle which can obtain the watering of a spray state with the nozzle cylinder connected to a nozzle body, even if pressure water is low pressure.

  In order to solve the problems as described above, the present invention includes an inner cylinder member provided with a valve body via a hose connection portion at the rear end and a valve holding portion that allows water discharge from the front end side at the front end side, The inner cylinder member is externally fitted so as to advance and retreat in the axial direction by rotation. When the valve is provided at the forward position with respect to the inner cylinder member, the valve seat is brought into contact with the valve body to be closed. A nozzle body is formed by an outer cylinder member that opens from the valve body when the valve seat moves away from the valve body, and is detachably connected to the distal end side of the outer cylinder member. In a watering nozzle that is used in combination with a nozzle cylinder with a small diameter on the tip side, the outer diameter of the nozzle cylinder is connected to the tip side of the outer cylinder member in the inner passage of the nozzle cylinder. A flow speed increasing member that comes into contact with the inner diameter surface of the internal passage of the cylinder is detachably incorporated. The outer diameter surface of increasing member, a plurality of water passing grooves adopts a configuration that is formed so as to be inclined with respect to the axial direction.

  With the nozzle cylinder connected to the front end side of the outer cylinder member on the rear end side of the flow velocity increasing member, the rear end abuts the front surface of the valve body, and this flow velocity increasing member is placed in the middle of the internal passage of the nozzle cylinder. A shaft body to be contacted is provided coaxially, and the middle of the shaft body is supported so as to be movable in the axial direction by a shaft holding member that is fitted so that water can pass through the inner passage of the nozzle cylinder. A structure in which a spring for urging the shaft body with elasticity toward the rear with respect to the shaft holding member is provided between the shaft holding member and the rear end side of the shaft body.

  Here, the hose connection portion provided at the rear end of the inner cylinder member has a large-diameter screw hole, and is adapted to be screwed and connected to the pressure water supply hose, and is externally fitted to the inner cylinder member. The inner circumferential surface of the cylindrical member is provided with a thread groove and the outer diameter surface of the inner cylindrical member is provided with a male screw that is screwed into the thread groove. When the outer cylindrical member is rotated, the screw advances and retreats in the axial direction. A sealing material is provided on the outer diameter surface of the distal end portion of the cylindrical member to hold the fitting surface with the outer cylindrical member in a watertight manner.

  A male screw is formed on the outer diameter surface of the distal end portion of the outer cylinder member, and a connecting cylinder is provided on the rear end of the nozzle cylinder so as to be fitted to the distal end portion of the outer cylinder member. The nozzle cylinder is detachably attached to the outer cylinder member by being screwed onto the male screw.

  This nozzle cylinder is a straight cylindrical portion from the rear end to the middle, and a taper portion having a gradually decreasing diameter from the middle toward the tip, and is opened as an injection hole at the tip of the taper portion.

  The flow velocity increasing member, the shaft body and the shaft holding member are made of synthetic resin. The plurality of water flow grooves formed in the flow velocity increasing member are provided so as to be inclined while drawing a little arc with respect to the axial direction.

  Further, the shaft holding member integrates the holding cylinder of the shaft body and the fitting cylinder with respect to the inside of the cylindrical portion of the nozzle cylinder with a connecting plate that is radially arranged in the circumferential direction along the axial direction. The shaft holding member and the flow velocity increasing member can be inserted into and removed from the inside of the nozzle cylinder, and the nozzle cylinder can be used alone by taking it out. Be able to.

  According to the present invention, a flow rate increasing member whose outer diameter is in contact with the inner diameter surface of the internal passage of the nozzle cylinder in a state where the nozzle cylinder is connected to the distal end side of the nozzle body inside the nozzle cylinder attached to the distal end side of the nozzle body. Since a plurality of water passage grooves are formed in the axial direction of the outer diameter surface of the flow velocity increasing member so as to be inclined with respect to the axial direction, the nozzle is opened when pressure water is injected by opening the nozzle body. The pressure water flowing toward the narrowed tip of the tube passes through the water flow groove of the flow velocity increasing member in the middle, and the water flow amount in the nozzle tube is reduced by this water flow groove, At the same time as the pressure of the pressure water passing through the groove rises, the flow velocity also increases, and since the water flow groove is inclined in the axial direction, the pressure water can be swirled. Rapid ejection from the tip injection hole of the cylinder More, it is possible to pressure water spray form.

  Even when the pressure water is at a low pressure, the pressure water can be surely atomized by increasing the pressure by passing through the water passage groove, increasing the flow velocity, and applying swirl.

  Further, by allowing the flow velocity increasing member to be freely inserted and removed from the inside of the nozzle cylinder, the nozzle cylinder can be used alone for straight injection if the flow velocity increasing member is taken out.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the illustrated examples of FIGS.

  As shown in the figure, the watering nozzle 11 is composed of a combination of a nozzle body 12 connected to a pressure water supply hose and a nozzle cylinder 13 detachably attached to the tip end side of the nozzle body 12. The flow rate increasing member 14, the shaft body 15, and the shaft holding member 16 are incorporated.

  The nozzle body 12 includes a hose connection portion 17 at the rear end and an inner cylinder member 20 provided with a valve body 19 on the front end side through a valve holding portion 18 that allows water discharge from the front end. The valve seat 21 provided at the distal end is closed when the valve seat 19 is in contact with the inner cylinder member 20 when the outer seat 20 is in the forward movement position with respect to the inner cylinder member 20. A valve seat 21 is formed of an outer cylinder member 22 that opens away from the valve body 19 at a retracted position with respect to the member 20.

  The inner cylinder member 20 has a rear end hose connecting portion 17 having a large-diameter screw hole 17a, and is screwed and connected to a pressure water supply hose, and is externally fitted to the inner cylinder member 20. A screw groove 23 is provided on the inner peripheral surface of the outer cylinder member 22, and a male screw 24 that is screwed into the screw groove 23 is provided on the outer diameter surface of the inner cylinder member 20. The outer cylinder member 22 is rotated with respect to the inner cylinder member 20. The seal member 25 is provided on the outer diameter surface of the distal end portion of the inner cylinder member 20 to hold the fitting surface with the outer cylinder member 22 in a watertight manner.

  The valve holder 18 provided at the tip of the inner cylinder member 20 is a plurality of radial support plates 26 provided on the inner periphery of the inner cylinder member 20, and has a smaller diameter than the inner diameter of the inner cylinder member 20. 20 has a structure in which a shaft 27 protruding forward in the axial direction from the tip of 20 is arranged, and water can be discharged from the tip of the inner cylinder member 20 between the shaft 27 and the inner cylinder member 20 by the support plate 26. A water passage 28 is secured. The valve body 19 is provided at the tip of the shaft 27, is formed in a disk shape having a slightly smaller diameter than the inner diameter of the inner cylinder member 20, and an elastic sheet 29 is overlapped and fixed on the back surface side.

  The outer cylindrical member 22 has a valve seat 21 in which the inner diameter surface of the distal end portion is accommodated in the valve body 19, and the elastic sheet 29 is in close contact with the valve seat 21 when the valve is closed, so that the distal end of the inner cylindrical member 20 is sealed. Furthermore, a male screw 30 is formed on the outer diameter surface of the tip portion, and a connection tube 31 is provided at the rear end of the nozzle tube 13 so as to be fitted to the tip portion of the outer tube member 22. The nozzle cylinder 13 is detachably attached to the outer cylinder member 22 by screwing an internal thread formed on the peripheral surface with the external thread 30.

  The nozzle cylinder 13 is a straight cylindrical portion 13a from the rear end to the middle, and a taper portion 13b having a gradually decreasing diameter from the middle toward the tip. The tip of the taper portion 13b opens as an injection hole 32. ing.

  The flow velocity increasing member 14, the shaft body 15, and the shaft holding member 16 are made of synthetic resin, and the flow velocity increasing member 14 is in contact with the inner peripheral surface in the middle of the tapered portion 13b of the nozzle cylinder 13 as shown in FIG. The plurality of water flow grooves 33 formed in the flow velocity increasing member 14 are provided so as to be inclined while drawing a little arc with respect to the axial direction. Yes.

  In a state where the nozzle cylinder 13 is connected to the front end side of the outer cylinder member 22 on the rear end side of the flow velocity increasing member 14, the rear end abuts on the front surface of the valve body 19, and the flow velocity increasing member 14 is connected to the nozzle cylinder 13. A shaft holding member 16 is provided so as to be coaxially provided in the middle of the inner passage of the nozzle tube 15 and fitted into the middle of the shaft body 15 so that water can pass through the inner passage of the nozzle cylinder 13. The shaft body 15 is supported so as to be movable in the axial direction, and between the shaft holding member 16 and the C ring 34 on the rear end side of the shaft body 15, the shaft body 15 is always elastic toward the rear side with respect to the shaft body 15. A spring 35 that biases the pressure is contracted.

  The shaft holding member 16 is a connecting plate in which the holding cylinder 16a of the shaft body 15 and the fitting cylinder 16b with respect to the inside of the cylindrical portion 13a of the nozzle cylinder 13 are arranged radially in the circumferential direction along the axial direction. The shaft holding member 16 and the flow velocity increasing member 14 are integrated together with the shaft body 15 into the interior of the nozzle tube 13 so that the water passing space 16d is secured between the holding tube 16a and the fitting tube 16b. The nozzle cylinder 13 can be used alone by removing it.

  The watering nozzle 11 of the present invention is configured as described above, and FIG. 1 shows a state when the outer cylinder member 22 is in the retracted position with respect to the inner cylinder member 20, and the valve body 19 has a valve opening state. When the seat 21 is retracted, the tip of the outer cylinder member 22 is opened, and the pressure water flowing from the inner cylinder member 20 toward the narrowed tip of the nozzle cylinder 13 when the pressure water is injected by opening the nozzle body 12 is On the way, the water flow passage 33 of the flow velocity increasing member 14 is passed, and the water flow amount in the nozzle cylinder 13 is reduced by the water flow groove 33 so that the pressure of the pressure water passing through the water flow groove 33 is reduced. At the same time, the flow velocity increases, and the water flow groove 33 is inclined in the axial direction, so that the pressure water is swirled.

  In this way, the pressure water can be sprayed by quickly ejecting the pressure water that has been pressurized, increased in flow velocity, and swirled from the small-diameter injection hole 32 that opens at the tip of the nozzle cylinder 13. .

  Further, when the pressure water is low pressure, the outer cylinder member 22 is rotated to adjust the valve opening amount of the valve body 19 and the valve seat 21 to perform primary pressure increase, and the pressure water passes through the water passage 33 described above. Thus, the pressure water can be reliably sprayed by increasing the pressure, increasing the flow velocity, and applying swirl.

  Further, by allowing the flow velocity increasing member 14 to be inserted into and removed from the inside of the nozzle cylinder 13, if the flow velocity increasing member 14 is taken out from the nozzle cylinder 13, the nozzle cylinder 13 can be used alone for straight injection, The nozzle body 12 can also be used alone with the nozzle cylinder 13 removed.

Longitudinal front view showing a state when the watering nozzle according to the present invention is opened The exploded perspective view of the watering nozzle concerning this invention Exploded perspective view of flow velocity increasing member, shaft body and shaft holding member Longitudinal front view showing the state when the conventional watering nozzle is opened

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Sprinkling nozzle 12 Nozzle main body 13 Nozzle cylinder 14 Flow velocity increase member 15 Shaft body 16 Shaft holding member 17 Hose connection part 18 Valve holding part 19 Valve body 20 Inner cylinder member 21 Valve seat 22 Outer cylinder member 23 Screw groove 24 Male screw 25 Sealing material 26 Support plate 27 Shaft 28 Water passage 29 Elastic sheet 30 Male screw 31 Connection tube 32 Injection hole 33 Water passage groove 34 C ring 35 Spring

Claims (2)

An inner cylinder member provided with a valve body via a hose connection part at the rear end and a valve holding part that allows water discharge from the front end side at the front end side, and the inner cylinder member to advance and retract in the axial direction by rotation The valve seat provided at the distal end abuts against the valve body when it is in the forward movement position with respect to the inner cylinder member and closes the valve body, and the valve seat moves away from the valve body in the backward position with respect to the inner cylinder member. A nozzle body is formed with an outer cylinder member that is opened, and is used in combination with a nozzle cylinder that is detachably connected to the distal end side of the outer cylinder member and the inner diameter of the internal passage is reduced to a smaller diameter on the distal end side. In the watering nozzle
A flow rate increasing member whose outer diameter is in contact with the inner diameter surface of the inner passage of the nozzle cylinder in a state where the nozzle cylinder is connected to the distal end side of the outer cylinder member is detachably incorporated in the inner passage of the nozzle cylinder. A watering nozzle characterized in that a plurality of water flow grooves are formed on the outer diameter surface of the increasing member so as to be inclined with respect to the axial direction.   With the nozzle cylinder connected to the front end side of the outer cylinder member on the rear end side of the flow velocity increasing member, the rear end abuts the front surface of the valve body, and this flow velocity increasing member is placed in the middle of the internal passage of the nozzle cylinder. A shaft body to be contacted is provided coaxially, and the middle of the shaft body is supported so as to be movable in the axial direction by a shaft holding member that is fitted so that water can pass through the inner passage of the nozzle cylinder. 2. A watering device according to claim 1, wherein a spring for urging the shaft body with elasticity toward the rear thereof is contracted between the shaft holding member and the rear end side of the shaft body. nozzle.

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