JP2009106809A - Rotary spray nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary spray nozzle being capable of low- and high-speed rotation, preventing unevenness of the shape of the sprayed and intending to improve the cleaning effect. <P>SOLUTION: The rotary spray nozzle has a body having a large-diameter and a small-diameter portion, a first groove inclined with an arbitrary angle in the upper part of the small-diameter portion, a first radial spraying port in the first groove, a second groove inclined on the opposite side to the inclination of the first groove, in the lower part of the small-diameter portion, a second radial spraying port in the second groove, a first and a second ringlike bearing above and blow the outer periphery of the small-diameter portion, hollow rotary heads attached through the first and second bearings to the outer periphery of the small-diameter portion in a freely rotatable way, two or more slitlike orifices in the rotary heads and an arc inside wall. When pressurized liquid water sprayed from the first and second spraying ports impinges the inside wall, the opposing force causes the liquid water to rotate, and the liquid water is sprayed from the orifices. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rotary spray nozzle that sprays pressure liquid water to the outside while rotating.

  A rotary spray nozzle is used to clean and cool the inside of the tank and the container.

  FIG. 10A is an overall perspective view showing an assembly state of one conventional example, and FIG. 10B is an exploded perspective view.

  In these drawings, 20 is a body, 21 is a flange provided at one end of the body 20, 22 is a round injection port provided above the flange 21, and 23 is a rotary head that is rotatably attached to the outer periphery of the body 20. , 24 is a round orifice for injection provided in the rotary head 23, 25 is a ring-shaped spacer, 26 is a 0-ring, and 20a is a liquid supply port into the body 20.

In operation, when pressurized liquid water is supplied into the body 20 from the liquid supply port 20 a, the pressurized liquid water is ejected from the round ejection port 22 provided below the body 20 to the rotary head 23 side, and the rotary head 23. Is sprayed from the round orifice 29 while rotating.
JP 2001-353476 A

  However, when the above conventional example is used for cleaning, there is a problem that the spray shape is uneven because the shape of the spray port is a round orifice and the cleaning effect is small.

  In addition, since the rotational drive system was only based on the reaction force of the pressure liquid water sprayed from the round orifice 24 separated from the central axis of the rotary head by an arbitrary distance, the rotation was uneven and the rotation was not constant. .

  Further, when the pressure of the supply liquid water is increased, the rotating head 23 rotates at a high speed due to the reaction force of the pressure liquid water, so that the cleaning effect may be small.

The present invention has been proposed in view of the above, and an object thereof is to provide a rotary spray nozzle capable of rotating at a low speed and a high speed, which prevents uneven spray shape and improves the cleaning effect. It is in.
Another object of the present invention is to provide a rotary spray nozzle with improved rotational stability and improved durability.

In order to achieve the above object, in claim 1, a substantially cylindrical body having a liquid supply port formed at one end thereof and a plurality of injection ports for spraying the supplied pressurized liquid water, and the body A rotary spray nozzle having a rotary head rotatably attached to the outer periphery of the rotary shaft through a bearing, and a nut for attaching the rotary head to the body, the body having a large diameter portion and a small diameter portion, and a small diameter A first groove inclined at an arbitrary angle is formed above the portion, a first radial injection port is formed in the first groove, and the inclination direction of the first groove is below the small diameter portion The second groove inclined to the opposite side is formed, a second radial injection port is formed in the second groove, and ring-shaped first and second bearings are formed above and below the outer periphery of the small diameter portion. Of the small-diameter portion through the first and second bearings. A hollow rotary head is rotatably attached to the peripheral portion, and a plurality of slit-like orifices are formed in the rotary head, and the inner wall has an arc shape, and is injected from the first and second radial injection ports. The pressurized liquid water hits the inner wall and is rotated by the reaction force, and the pressure liquid water is sprayed from the orifice.
According to a second aspect of the present invention, there is provided a substantially cylindrical body having a liquid supply port formed at one end and a plurality of injection ports through which the supplied pressurized liquid water is sprayed, and the outer periphery of the body is rotatable via a bearing. A rotary spray nozzle having a rotary head attached to the body and a nut for attaching the rotary head to the body, the body having a large diameter portion and a small diameter portion, and a first radial shape above the small diameter portion. An injection port is formed, a second radial injection port is formed below the small-diameter portion, and ring-shaped first and second bearings are provided above and below the outer periphery of the small-diameter portion. A hollow rotary head is rotatably attached to the outer peripheral portion of the small-diameter portion via a bearing of No. 2, and a plurality of slit-like orifices are formed in the rotary head, the inner wall has an arc shape, and the rotary head First and second actions The first and second turbines are disposed in the unit so as to be opposed to the first and second radial injection ports with an interval therebetween, and the injected pressurized liquid water is applied thereto, respectively, and the rotary head is rotated, It is characterized by spraying pressure liquid water.
According to a third aspect of the present invention, in the rotary spray nozzle according to the first or second aspect, the inner wall surface of the rotary head has an arc shape formed by combining two arc surfaces protruding toward the outer peripheral side. .
According to a fourth aspect of the present invention, in the rotary spray nozzle according to the first, second, or third aspect, the first and second bearings have the same shape.

According to the first aspect of the present invention, since the first and second radial injection ports are provided in the first and second grooves, the pressurized liquid water flows along the grooves and rotates within the rotary head. The jetting force of the rotated liquid water is dispersed into a force and a force for rotating the rotary head when the liquid water itself rotates. Thereby, the force which rotates a rotating head is adjusted, and a rotating head can be rotated at low speed.
According to the second aspect of the present invention, since the pressurized liquid water injected from the first and second radial injection ports hits the first and second turbines provided on the rotary head side, the rotary head is moved at high speed. Can be rotated.
According to the first to third aspects of the invention, since the inner wall of the rotary head has an arc surface, the liquid water flows along the arc, converges on the orifice, and is ejected to the outside. In this case, since the convergence pressure is uniformly strong in the circular arc, the liquid water ejected from the orifice has a uniform spray water amount distribution in a fan shape.
According to the invention of claim 4, since each bearing has the same shape, it is possible to reduce that the rotary head presses only one of the bearings by water pressure, the frictional resistance is reduced, the rotation of the rotary head is stable, and Since the wear of the bearing is also reduced, durability is improved.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an assembled perspective view of a rotary spray nozzle of a low-speed rotation type, FIG. 2 is an exploded perspective view, FIG. 3 is a longitudinal sectional view of a rotating head portion used in the present invention, and FIG. .

  As shown in FIG. 1, the low speed rotation type rotary spray nozzle 1 according to the first embodiment of the present invention is substantially cylindrical and has a large diameter portion 3a having a liquid supply port 2 formed on the upper portion thereof. A body 3 for supplying a liquid having a small diameter portion (see FIG. 2) formed below the diameter portion 3a, and is rotatably provided on the outer periphery of the small diameter portion of the body 3, has a hollow shape, and is formed on the outer peripheral surface 6a. The rotary head 6 includes a plurality of first and second orifices 4 and 5 for liquid injection, and a rotary head mounting nut 7 that prevents the rotary head 6 from coming out of the body 3. ing.

  As shown in detail in FIG. 2, the structure of the substantially cylindrical body 3 having the liquid supply port 2 is a large-diameter portion 3a above, and a part of the outer peripheral portion is cut by cutting. A flat surface 3a 'is formed.

  Below the large diameter portion 3a, a tapered surface 3c having an outer diameter that gradually decreases downward is formed. A cylindrical portion 3d is formed below the tapered surface 3c, and a rotary head is formed below the cylindrical portion 3d. An upper mounting portion 3e is formed.

  The rotary head upper mounting portion 3e has a cylindrical shape that is slightly smaller in diameter than the upper cylindrical portion 3d, and a plurality of first grooves 3f having a substantially inverted U shape are formed at appropriate intervals on the lower outer peripheral portion. And the 1st radial injection port 3g which injects the pressure liquid water supplied from the liquid supply port 2 outside is formed in the bottom part in this 1st groove | channel 3f. Here, “radial” means that it spreads from the inside to the outside. The first groove 3f is inclined at an arbitrary angle, that is, inclined to the left in the illustrated state, and the first radial injection port 3g is surrounded by the inner wall forming the first groove. Yes.

  A cylindrical small diameter portion 3b is formed below the rotary head upper mounting portion 3e. A rotary head lower mounting portion 3h having a diameter larger than that of the small diameter portion 3b is formed below the small diameter portion 3b. That is, a rotary head upper mounting portion 3e is formed at the upper portion of the small diameter portion 3b, and a rotary head lower mounting portion 3h is formed at the lower portion.

  A plurality of substantially U-shaped second grooves 3i are formed at an appropriate interval on the upper outer peripheral portion of the rotating head lower mounting portion 3h, and a second radial injection port 3j is formed in the second groove 3i. Has been.

  The inclination of the second groove 3i in the oblique direction is formed at an arbitrary angle opposite to the inclination direction of the first groove 3f on the rotary head upper mounting portion 3e side.

  The plurality of first and second radial injection ports 3g and 3j are opened at a tangential angle at which the center line of each of the injection ports 3g and 3j is perpendicular to the surface of the body 3. Moreover, it is good also as what opened the centerline of each injection port 3g, 3j with arbitrary same tangent angles other than a right angle with respect to the body 3 surface.

  A rotary head 6 is rotatably attached to the outer peripheral portion of the small diameter portion 3b.

  The rotary head 6 is provided with a large-diameter hollow barrel portion 6b, a substantially cylindrical first mounting portion 6c provided on the upper portion of the barrel portion 6b, and a lower portion of the barrel portion 6b. The cylinder 6b has a plurality of first and second orifices 4 and 5 for injection.

  The first orifice 4 includes a first slit 4a extending in the axial direction of the body portion 6b, and a second slit 4b that is continuous with the first slit 4a and extends to a curved shoulder portion above the body portion 6b.

  The second orifice 5 is located on the shoulder, and is connected to the first slit 5a extending in the radial direction of the trunk 6b and the first slit 5a, and the lower part is located above the trunk 6b below the shoulder. The slit 5b.

  The first and second orifices 4 and 5 formed of such slits are arranged side by side above the body portion so as to be separated from each other. In the illustrated example, the first and second orifices 4 and 5 are provided one by one, but it is needless to say that an appropriate number may be provided as necessary.

  As shown in FIG. 3, the rotary head 6 includes a first bearing housing portion 6c ′ for housing the first and second bearings 8 and 9, and a second bearing housing portion 6d ′. The second mounting portions 6c and 6d are formed inside.

  Further, first and second chambers 10a and 10b are formed in the body 6b of the rotary head 6. The first and second chambers 10a and 10b formed above and below each have a horizontally long track shape, and the inner wall surface of the body portion 6b is a combination of two circular arc surfaces protruding toward the outer peripheral surface side. It has a daruma-shaped arc.

  As shown in FIG. 2, the first mounting portion 6c above the rotating head 6 is positioned on the rotating head upper mounting portion 3e side of the body 3, and the second mounting portion 6d below the rotating head 6 is the lower portion of the rotating head. Located on the mounting portion 3h side.

  A bottom portion of the rotary head lower mounting portion 3h is closed, and a nut mounting portion 3k having a threaded outer periphery is formed below the bottom portion.

  Next, the assembly procedure will be described with reference to FIGS.

  When assembling, first, the ring-shaped first bearing 8 is positioned above the rotating head upper mounting portion 3e of the body 3 from below the body 3, and then the rotating head 6 is inserted from below the body 3 into the body portion. 6b is positioned on the outer periphery of the small-diameter portion, and then the second bearing 9 is positioned below the rotary head lower mounting portion 3h, and the nut 7 is screwed onto the outer periphery of the nut mounting portion 3k. Thus, in this invention, each member can be assembled and assembled from one direction, and assemblability is good.

  The first and second bearings 8 and 9 have the same shape and size and are made of the same material, and the first and second mounting portions 6c and 6d formed on the upper and lower sides of the rotary head 6, respectively. The rotary head 6 is rotatably attached to the body 3 via the first and second bearings 8 and 9 located in the second bearing housing portions 6c ′ and 6d ′.

  The first radial injection port 3g on the body 3 side is located inside the first attachment portion 6c of the rotary head 6, and the second radial injection port 3j is located inside the second attachment portion 6d.

  Further, as shown in FIG. 4, a connection screw 2 ′ for connection with another member is formed on the inner periphery of the liquid supply port 2 of the body 3.

  Next, the operation of the rotary spray nozzle 1 according to the first embodiment of the present invention will be described.

  The pressure liquid water injected from the liquid supply port 2 enters the rotary head 6 through the first and second radial injection ports 3g and 3j opened in the first and second grooves 3f and 3i. Be injected. In this case, the liquid water exiting from the first ejection port 3g is ejected obliquely downward along the first groove 3f as shown by arrows in FIGS. On the other hand, the liquid water exiting from the lower second injection port 3j is injected obliquely upward along the second groove 3i. Accordingly, the rotating head 6 rotates at a low speed in the right direction in the state shown in the drawing due to these water flows.

  The reason for the low speed is as follows.

  Liquid water flows along the first and second grooves 3 f and 3 i and rotates inside the rotary head 6. The jetting force of the rotated liquid water is dispersed into a force for rotating the liquid water itself and a force for rotating the rotary head 6. Thereby, the force for rotating the rotary head 6 is adjusted, and the rotary head 6 rotates at a low speed.

  The low speed is a case where the rotation of the rotary head 6 is generally less than 150 rotations per minute, and 150 rotations or more is called a high speed. By making the groove angle, depth, number of injection ports, diameters, etc. different, it is possible to manufacture a product having an arbitrary number of revolutions of 10 to less than 150 revolutions per minute.

  The liquid water sprayed inside flows along the arc (spherical surface) of the inner wall surface of the body 6b, converges on the first and second orifices 4 and 5, and is sprayed to the outside. Since the convergence pressure is uniformly strong in the circular arc, the liquid water ejected from the orifices 4 and 5 has a uniform spray water amount distribution in a fan shape. On the other hand, when the inner wall has a simple cylindrical shape, there is a portion where the convergence pressure of the liquid water is strong and weak, so the water volume distribution is not uniform.

  In the present invention, the inner wall of the rotary head 6 is formed by two Dalma arcuate surfaces. In the state shown in the figure, the upper arc acts on the orifice opened in the upper half of the rotary head 6 and covers the diagonally downward from the top. On the other hand, the lower arc acts on the lower half of the orifice and covers from the upper side to the lower side.

  That is, in FIG. 2, the arc of the head portion of the dharma acts on the second orifice 5 to form a uniform jet on the upper side. A dharma jaw portion acts on the slit 4a portion of the first orifice 4 so as to inject obliquely downward from the side. The slit 4b portion of the first orifice 4 is on the top.

  In particular, although not shown, a similar orifice is usually opened on the lower side, and liquid water covering the entire 360 ° is jetted by the upper and lower orifices.

  5 (a) and 5 (b) show water amount distribution data comparing the spray water amount distribution of the product of the present invention with a single orifice and the spray water amount distribution between the nozzle having a mere cylindrical inner wall of the rotary head. Show. (A) is the product of the present invention, and (b) is a simple cylindrical nozzle. In the case of a simple cylindrical nozzle, the amount of sprayed water radiated from the rotary head to the outer periphery is ejected from a linear orifice opened in a simple cylindrical rotary head whose inner wall surface is flat. However, according to the product of the present invention, the amount of spray water radiated from the rotary head 6 to the outer periphery is uniform as shown in FIG.

  The fan-shaped liquid water that has been made uniform by changing the number, shape, etc. of the first and second orifices 4 and 5 can be sprayed over the entire 360 ° range, or sprayed at an arbitrary angle of less than 360 °. Is possible.

  In the present invention, the orifice is opened directly to the rotary head 6 and is not structured to assemble a separate nozzle tip in the rotary head 6, so that the number of parts does not increase and the size can be reduced. it can.

  In addition, according to the product of the present invention, when the rotary head 6 rotates, the first and second bearings 8 and 9 have the same shape and size, and therefore the force by which the rotary head 6 presses only one of the bearings due to water pressure. By reducing it, there is an advantage that the frictional resistance is reduced, the rotational stability of the rotary head 6 is improved, the bearings are less likely to be worn, and the durability is improved.

  6 to 9 show a second embodiment of the present invention of the high speed rotation type. 6 is an assembled perspective view, FIG. 7 is an exploded perspective view, FIG. 8 is a sectional view showing the internal structure of the rotary head in this embodiment, and FIG. 9 is a sectional view in an assembled state.

  In this embodiment, as is clear by comparing FIGS. 7 and 8 with FIGS. 2 and 3 of the first embodiment, the first and second radial shapes provided above and below the small-diameter portion 3b. The injection ports 3g 'and 3j' open at the same tangential angle with respect to the surface of the body 3 having the large diameter portion 3a and the small diameter portion 3b. In the second embodiment, the first embodiment There are no first and second grooves 3f, 3i (see FIGS. 2 and 4) in the example.

  Further, in addition to this, the first and second radial injection ports 3g ′ and 3j are arranged on the inner peripheral walls of the first and second mounting portions 6c and 6d of the rotary head 6 with an interval therebetween and injected. The first and second turbines 11a and 11b for rotating the rotary head 6 at a high speed by the pressure liquid water are provided.

  Since other configurations and operations are substantially the same as those of the first embodiment, the same portions are denoted by the same reference numerals and description thereof is omitted.

  In operation, in this embodiment, when pressurized liquid water is supplied into the body 3 from the liquid supply port 2, the pressurized liquid water is disposed opposite to the first and second radial injection ports 3g ′ and 3j ′. The fuel is injected into the first and second turbines 11a and 11b. For this reason, it is comprised so that the rotation head 6 can be rotated at high speed.

1 shows an assembled perspective view of a low speed rotation type rotary spray nozzle according to a first embodiment of the present invention. FIG. The exploded perspective view same as the above is shown. 1 is a longitudinal sectional view of a rotary head used in a first embodiment of the present invention. The longitudinal cross-sectional view of the assembly state of 1st Example of this invention is shown. (A) is explanatory drawing which shows distribution of the amount of spray water of this invention, (b) shows the case of a mere cylindrical nozzle. The assembly perspective view of the high speed rotation type rotary spray nozzle concerning the 2nd example of the present invention. The exploded perspective view same as the above is shown. The longitudinal cross-sectional view of the rotary head used in 2nd Example of this invention is shown. The longitudinal cross-sectional view of the assembly state of 2nd Example of this invention is shown. (A) is an exploded perspective view of a conventional example, and (b) is an assembled perspective view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotary spray nozzle 2 Liquid supply port 2 'Tangent screw 3 Body 3a Large diameter part 3b Small diameter part 3a' Flat surface 3c Tapered surface 3d Cylindrical part 3e Rotating head upper attachment part 3f 1st groove | channel 3g, 3g '1st Radial injection port 3h Rotating head lower mounting portion 3i Second groove 3j, 3j ′ Second radial injection port 3k Nut mounting portion 4 First orifice 5 Second orifice 6 Rotating head 6a Rotating head outer peripheral surface 6b Body 6c 1st attachment part 6d 2nd attachment part 7 Nut 8 1st bearing 9 2nd bearing 10a 1st chamber 10b 2nd chamber 11a 1st turbine 11b 2nd turbine

Claims (4)

A substantially cylindrical body in which a liquid supply port is formed at one end and a plurality of injection ports for spraying the supplied pressurized liquid water are formed, and a rotation that is rotatably attached to the outer periphery of the body via a bearing A rotary spray nozzle having a head and a nut for attaching the rotary head to the body,
The body has a large-diameter portion and a small-diameter portion, a first groove inclined at an arbitrary angle is formed above the small-diameter portion, and a first radial injection port is formed in the first groove, And the 2nd groove | channel inclined in the opposite side with respect to the inclination direction of the said 1st groove | channel is formed under the said small diameter part, The 2nd radial injection port is formed in this 2nd groove | channel,
Ring-shaped first and second bearings are provided above and below the outer periphery of the small diameter portion,
A hollow rotary head is attached to the outer peripheral portion of the small-diameter portion via these first and second bearings so as to be rotatable.
The rotary head has a plurality of slit-shaped orifices, and the inner wall has an arc shape. The pressure liquid water sprayed from the first and second radial spray ports hits the inner wall and rotates with the reaction force. Spraying pressure liquid water from the orifice,
This is a rotary spray nozzle. A substantially cylindrical body in which a liquid supply port is formed at one end and a plurality of injection ports for spraying the supplied pressurized liquid water are formed, and a rotation that is rotatably attached to the outer periphery of the body via a bearing A rotary spray nozzle having a head and a nut for attaching the rotary head to the body,
The body has a large diameter portion and a small diameter portion, a first radial injection port is formed above the small diameter portion, and a second radial injection port is formed below the small diameter portion,
Ring-shaped first and second bearings are provided above and below the outer periphery of the small diameter portion,
A hollow rotary head is attached to the outer peripheral portion of the small-diameter portion via these first and second bearings so as to be rotatable.
The rotary head is formed with a plurality of slit-shaped orifices, the inner wall has an arc shape, and the first and second radial injection ports are spaced from each other in the first and second mounting portions of the rotary head. First and second turbines, which are arranged opposite to each other and hit with the injected pressure liquid water, are respectively provided, rotate the rotary head and spray the pressure liquid water from the orifice.
This is a rotary spray nozzle. The rotary spray nozzle according to claim 1 or 2,
The rotary spray nozzle according to claim 1, wherein an inner wall surface of the rotary head has an arc shape formed by combining two arc surfaces protruding toward the outer peripheral side. The rotary spray nozzle according to claim 1, 2 or 3,
The rotary spray nozzle characterized in that the first and second bearings are of the same shape.

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