JP2010184169A - Spray nozzle device for use in sprayer, and spray system employing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spray nozzle device capable of keeping a spray base material and pressurized water in a good mixed condition, and of surely and accurately spraying a material to be sprayed from the tip of a spray nozzle onto an intended position. <P>SOLUTION: A mixing cylinder A for use in a nozzle includes a plurality of flat and narrow sections 3 formed and disposed along the axial direction of the cylinder at a suitable distance apart and flattened in different directions around the axis of the cylinder. A spray nozzle B includes a nozzle base body B1 and a nozzle exterior body B2. A space 20 for air to pass through is formed between the outer circumferential surface of an interior cylinder member 11 of the nozzle base body B1, and the inner circumferential surface of the center part of the nozzle exterior body B2. An air ejection port 21 is formed between a tapered tilting inner circumferential face 17 formed on the inner circumferential surface of the tip of the nozzle exterior body B2, and the tip of the nozzle base body B1. Pressurized air is supplied from an air hose D attached to an air hose attachment member 15, and is ejected from the air ejection port 21 via the space 20 for air to pass through. Thus, the material to be sprayed can be ejected from the tip of the nozzle exterior body B2 in a manner of being surrounded by the pressurized air. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention mainly relates to a spray nozzle device in a spray machine and a spray nozzle device used when reinforcing (repairing) a slope in road construction or residential land development by spraying cement material. The spray base material formed by adding at least sand to the cement is dry-pumped to the tip of the long hose using a spray machine, while the long hose Water is separately pumped to the tip end portion, water is added to the spray base material at the tip end portion in the hose to form a spray target, and when spraying the spray target material, A spray nozzle device in a spray machine devised to improve the mixing state of the nozzle and to spray a sprayed object reliably and accurately from a nozzle tip to a desired position, and a spray system using the spray nozzle device It is.

Conventionally, various types of spray nozzle devices and spray systems in this type of spray machine have been disclosed. For example, a spray nozzle as shown in FIG.
This shows that air is ejected forward in an annular shape from the peripheral portion of the flow of the frame material in the spray nozzle. In addition, the method frame material in which the spray nozzle is used is obtained by kneading sand, cement and water in advance with a mixer, and this wet method frame material is pumped to the spray nozzle through a pumping line by a pump. It is what I did.
In Patent Document 2, a mixture of sand and cement is dry-transported by a transport pipe from a dry-type sprayer, pressurized water and pressurized air are added to the transported mixture in a water swivel, and the mixture is fed into a mixing device. At the same time, a means that is sprayed after being stirred by a plurality of stirring blades in the mixing apparatus is employed.

JP-A-6-108470 (FIG. 3) JP 2000-96823 A

  By the way, in the case of a spray nozzle like the former, by blowing air forward from the surrounding part of the flow of the frame material in an annular shape, the material to be dropped is put on the air and blown away, or the air It is described so that it can be prevented from drooping by the air curtain action due to the flow of air, but the area of the annular jet port formed between the ring tube and the spray nozzle body is configured to be constant Therefore, it has been difficult to adjust the air jet pressure according to the frame material, spraying conditions, and the like. In addition, since the wet method frame material is pumped from the pumping pump to the spray nozzle, the pumping resistance is large, and it is difficult to expect smoother pumping and spraying.

  In the latter mixing device, a plurality of stirring blades are provided in the mixing device, so that the configuration of the mixing device is difficult, and the mixture of sand and cement is supplied with pressurized water and pressurized air. When adding, there was a problem that it was difficult to add water to the mixture reliably and in a balanced manner.

  Therefore, the present invention eliminates the above-described difficulties and the like so that the spray base material and water can be smoothly pumped, respectively, and the spray base material and water can be mixed reliably, smoothly and in a balanced manner. In addition, it is possible to obtain a sprayed product in a homogeneous and well-mixed state, and further, easily and uniformly spray the sprayed material to a desired position, and in addition to the sprayed material and spraying conditions, etc. Accordingly, the present invention has been created so as to provide a spray nozzle device and a spray system that can easily adjust the air ejection pressure and that is simple in structure, easy to handle, and easy to maintain.

  Therefore, in order to achieve the above-described problems, in the spray nozzle device in the spray machine according to claim 1, the spray base material formed by adding sand to the cement is sprayed. A sprayed object is formed by adding water, which is dry-pumped to the tip of the hose C using a machine, and separately pumped up to the tip of the hose C to the spray base, and this sprayed object is desired. A spray nozzle device configured to spray at a position, a nozzle mixing cylinder A attached to a tip portion of a hose C, and a spray nozzle B attached to a tip portion of the nozzle mixing cylinder A The mixing cylinder A for a nozzle is formed by arranging a plurality of flattened narrow portions 3 on a cylindrical tube base at appropriate intervals along the cylindrical core direction. Each flat direction is around the tube core The spray nozzle B is formed in a different direction, and the spray nozzle B includes a nozzle base B1 attached to the tip portion of the nozzle mixing cylinder A, and a nozzle outer case B2 attached to the nozzle base B1 in an outer shape. Thus, an air passage space 20 is provided between the outer peripheral surface of the inner cylinder portion 11 where the tip of the nozzle base B1 is formed on the side and the inner peripheral surface of the central portion of the nozzle outer body B2, and the nozzle outer body B2 A tapered inclined inner peripheral surface 17 is formed on the inner peripheral surface of the ridge so that the tip gradually narrows as the tip moves toward the ridge, and an air jet is formed between the inclined inner peripheral surface 17 and the tip of the nozzle base B1. The air hose mounting portion 15 that is provided around the outlet 21 and communicates with the air passage space 20 is formed in the nozzle exterior body B2, and the pressurized air supplied from the air hose D attached to the air hose mounting portion 15 passes through the air. Ejected from the air ejection port 21 through between 20 and employs the means configured to so as to surround the object to be sprayed was a pressurized air pumped from the hose C can be discharged from the nozzle outer body B2 tip.

  Further, in the spray nozzle device in the spray machine according to claim 2, the nozzle exterior body B2 is mounted by screwing the female screw portion 16 to the male screw portion 12 of the nozzle base B1, The mounting position of the nozzle exterior body B2 with respect to the nozzle base B1 is formed so as to be adjustable in the front-rear direction, and means configured to be able to adjust the area of the air outlet 21 is adopted.

  Furthermore, in the spray system using the spray nozzle device according to claim 3, the spray base material formed by adding at least sand to the cement is dry-pressurized to the tip portion in the hose C using the spray machine. The water injection nozzle E is formed so that water that is separately pumped to the tip of the hose C can be added to the spray base material, and the sprayed object in which water is added to the spray base material is sprayed to a desired position. A spraying system including a spray nozzle device formed so as to be able to perform the spraying nozzle E, the spraying nozzle base E1 mounted on the tip of the hose C, and the tip of the spraying nozzle base E1 cover the flange portion. A water passage space between the outer peripheral surface of the inner cylinder 31 where the tip of the water injection nozzle base E1 is formed on the side and the inner peripheral surface of the water injection nozzle outer body E2 4 And a tapered inclined inner peripheral surface 37 is formed such that the tip of the water injection nozzle outer body E2 gradually narrows toward the inner peripheral surface of the wand. The water injection port 41 is provided around the tip of the water injection nozzle base E1, and the water injection hose attachment portion 35 communicating with the water passage space 40 is formed in the water injection nozzle exterior body E2, and the water injection attached to the water injection hose attachment portion 35 is provided. The water pumped from the hose F is ejected from the water outlet 41 through the water passage space 40, and water is added to the spray base material pumped from the hose C in a surrounding shape so as to be pumped to the spray nozzle device. The spray nozzle device includes a nozzle mixing cylinder A attached to the tip of the water injection nozzle E and a spray nozzle B attached to the tip of the nozzle mixing cylinder A. The nozzle mixing Cylindrical A is cylindrical A plurality of flattened narrow portions 3 are formed on the base so as to be arranged at appropriate intervals along the cylinder core direction, and the adjacent flattened narrow portions 3 are arranged in different directions around the cylindrical core. The spray nozzle B is composed of a nozzle base B1 attached to the tip portion of the nozzle mixing cylinder A and a nozzle outer case B2 attached to the nozzle base B1 in an outer shape, and the nozzle base B1 An air passage space 20 is provided between the outer peripheral surface of the interior cylinder portion 11 formed at the end of the nozzle and the inner peripheral surface of the central portion of the nozzle outer body B2, and the tip of the nozzle outer body B2 is A tapered inclined inner peripheral surface 17 is formed on the inner peripheral surface so that the tip gradually narrows as the tip moves toward the inner peripheral surface, and an air outlet 21 is provided between the inclined inner peripheral surface 17 and the tip of the nozzle base B1. The air ho that communicates with the air passage space 20 The nozzle mounting portion 15 is formed in the nozzle exterior body B2, and the pressurized air supplied from the air hose D mounted on the air hose mounting portion 15 is ejected from the air outlet 21 through the air passage space 20, and the water injection nozzle A means is adopted in which the sprayed object fed from E is surrounded by pressurized air so that it can be discharged from the tip of the nozzle exterior body B2.

  Therefore, according to the spray nozzle device in the spray machine of claim 1, the spray base material formed by adding at least sand to the cement is dry-pressure fed to the tip portion in the hose C using the spray machine. On the other hand, since water to be sprayed is formed by adding water separately pumped to the tip end portion of the hose C to the spray base material, the spray base material and water can be smoothly pumped, respectively. In addition, the pumping resistance is considerably lower than that of so-called wet pumping, and pumping over a long distance is possible.

  The nozzle mixing cylinder A is formed by arranging a plurality of flattened narrow portions 3 on the cylindrical tube base at appropriate intervals along the cylinder core direction. Since the flattening direction is formed in different directions around the cylindrical core, the sprayed object is squeezed from different directions by the plurality of flattened constricted portions 3, and sprayed in a uniform and excellent mixed state. Things can be obtained.

  Further, the spray nozzle B includes a nozzle base body B1 attached to the tip portion of the nozzle mixing cylinder A and a nozzle exterior body B2 attached to the nozzle base body B1 in an exterior shape, and the tip end of the nozzle base body B1. An air passage space 20 is provided between the outer peripheral surface of the inner cylinder 11 formed on the flange and the inner peripheral surface of the central portion of the nozzle outer body B2, and the tip of the nozzle outer body B2 is the inner periphery of the hook. A tapered inclined inner peripheral surface 17 that gradually narrows as the tip moves toward the surface is formed, and an air outlet 21 is provided between the inclined inner peripheral surface 17 and the tip of the nozzle base B1. An air hose attachment portion 15 communicating with the air passage space 20 is formed in the nozzle exterior body B 2, and pressurized air supplied from the air hose D attached to the air hose attachment portion 15 is blown through the air passage space 20. Exit Since the sprayed object ejected from 1 and pumped from the hose C is configured to be discharged from the tip of the nozzle exterior body B2 so as to be surrounded by pressurized air, the sprayed object is ejected from the tip of the nozzle exterior body B2. When compressed, pressurized air is blown out so as to surround the sprayed object, and the pressure of the pressurized air is applied to the sprayed object, and the diffusion of the sprayed object can be suppressed. Thus, the operator can accurately spray the sprayed object at a desired position (targeted position or relatively distant position). As a result, it becomes easy to spray the material to be sprayed to the desired position reliably and uniformly.

In particular, a tapered inclined inner peripheral surface 17 is formed such that the tip of the nozzle exterior body B2 gradually narrows toward the inner peripheral surface of the wand, and the inclined inner peripheral surface 17 and the tip of the nozzle base B1 are formed. Since the air outlet 21 is provided between the air outlet 21 and the pressurized air jetted from the air outlet 21 moves along the inclined inner peripheral surface 17 so as to surround the article to be sprayed. Thus, a force that pushes it forward can be applied.
Moreover, there is pressurized air around the blown article to be blown, and the rebound loss and the like can be reduced on the blowing face such as a slope, resulting in a beautiful blowing face.
The air outlet 21 can be formed to be considerably narrower than the air passage space 20, and the passage speed of the pressurized air at the air outlet 21 can be considerably increased. As a result, a strong force that pushes the sprayed object forward can be exhibited, and a strong force that pulls the sprayed object behind the air outlet 21 forward can also be exerted. You will be able to spray more strongly.

  In addition, the spray nozzle device has a simple configuration, is easy to handle, and is easy to maintain, and the nozzle mixing cylinder A has a very simple configuration and is easy to maintain.

  According to the spray nozzle device in the spray machine of claim 2, the nozzle exterior body B2 is mounted by screwing the female screw portion 16 to the male screw portion 12 of the nozzle base body B1, and the nozzle base body. Since the mounting position of the nozzle exterior body B2 with respect to B1 can be adjusted in the front-rear direction and the area of the air outlet 21 can be adjusted, the pressure and speed of the pressurized air can be adjusted easily and finely. As a result, it is possible to perform the optimum blowing of the pressurized air according to the article to be sprayed, the spraying conditions, and the like.

  Furthermore, according to the spraying system of Claim 3, the spraying base material formed by adding at least sand to cement is dry-pumped to the front-end | tip part in the hose C using a spraying machine, and this spraying base material is carried out. Since the water injection nozzle E formed so that the separately pumped water can be added to a portion near the tip of the hose C, the spray base material and the water can be smoothly pumped, respectively. Further, the pumping resistance is considerably lower than the so-called wet pumping, and pumping at a long distance is also possible.

  Moreover, the water injection nozzle E is composed of a water injection nozzle base E1 attached to the tip portion of the hose C and a water injection nozzle exterior body E2 attached so that the tip of the water injection nozzle base E1 covers the flange portion. A water passage space 40 is provided between the outer peripheral surface of the inner cylinder portion 31 where the tip of the base E1 is formed on the side and the inner peripheral surface of the water injection nozzle exterior body E2, and the tip of the water injection nozzle exterior body E2 A tapered inclined inner peripheral surface 37 is formed on the inner peripheral surface of the inner peripheral surface so as to gradually narrow as the tip moves toward the inner side, and a water spout 41 is provided between the inclined inner peripheral surface 37 and the tip of the water injection nozzle base E1. A water injection hose mounting portion 35 that is provided around the water passage space 40 is formed in the water injection nozzle exterior body E2, and water pumped from the water injection hose F attached to the water injection hose attachment portion 35 passes through the water passage space 40. Or water spout 41 Since water is added to the spray base material which is ejected and pumped from the hose C so as to be pumped to the spray nozzle device, the pressurized water is jetted from the water outlet 41 so as to surround the spray base material. Thus, the pressurized water can be efficiently added to the spraying base material, and the spraying base material and the pressurized water can be reliably and smoothly mixed in a balanced manner.

In particular, a tapered inclined inner peripheral surface 37 is formed such that the tip of the water injection nozzle outer body E2 gradually narrows toward the inner peripheral surface of the wand, and the inclined inner peripheral surface 37 and the water injection nozzle base body are formed. Since the water outlet 41 is provided around the tip of the E1, the pressurized water jetted from the water outlet 41 moves along the inclined inner peripheral surface 37 and then mixes well with the sprayed object. A force that pushes forward can be applied.
In addition, the water spout 41 can be formed to be considerably narrower than the water passage space 40, and the water passage speed at the water spout 41 can be considerably increased. Thus, the pressurized water is better mixed with the spray base material, and can exert a stronger force that pushes the sprayed object forward.

  Furthermore, the mixing cylinder A for nozzles is formed by arranging a plurality of flattened narrow portions 3 on the cylindrical tube base at appropriate intervals along the tube core direction. Since the flattening direction is formed in different directions around the cylindrical core, the sprayed object is squeezed from different directions by the plurality of flattened constricted portions 3, and sprayed in a uniform and excellent mixed state. Things can be obtained.

  The spray nozzle B is composed of a nozzle base B1 attached to the tip portion of the nozzle mixing cylinder A and a nozzle outer case B2 attached to the nozzle base B1 in an outer shape, and the tip of the nozzle base B1. An air passage space 20 is provided between the outer peripheral surface of the inner cylinder 11 formed on the flange and the inner peripheral surface of the central portion of the nozzle outer body B2, and the tip of the nozzle outer body B2 is the inner periphery of the hook. A tapered inclined inner peripheral surface 17 that gradually narrows as the tip moves toward the surface is formed, and an air outlet 21 is provided between the inclined inner peripheral surface 17 and the tip of the nozzle base B1. An air hose attachment portion 15 communicating with the air passage space 20 is formed in the nozzle exterior body B2, and pressurized air supplied from the air hose D attached to the air hose attachment portion 15 is blown out through the air passage space 20. Since the sprayed object ejected from the nozzle 21 and pumped from the water injection nozzle E is surrounded by the pressurized air so that it can be discharged from the tip of the nozzle exterior body B2, the sprayed object is discharged from the tip of the nozzle exterior body B2. When blown out, pressurized air is blown out so as to surround the blown object, and the pressure of the pressurized air is applied to the blown object, and diffusion of the blown object is suppressed. Thus, the operator can accurately spray the article to be sprayed on a desired position (targeted position or relatively distant position). As a result, it becomes easy to spray the material to be sprayed to the desired position reliably and uniformly.

In particular, a tapered inclined inner peripheral surface 17 is formed such that the tip of the nozzle exterior body B2 gradually narrows toward the inner peripheral surface of the wand, and the inclined inner peripheral surface 17 and the tip of the nozzle base B1 are formed. Since the air outlet 21 is provided between the air outlet 21 and the pressurized air jetted from the air outlet 21 moves along the inclined inner peripheral surface 17 so as to surround the article to be sprayed. Thus, a force that pushes it forward can be applied.
Moreover, there is pressurized air around the blown article to be blown, and the rebound loss and the like can be reduced on the blowing face such as a slope, resulting in a beautiful blowing face.
The air outlet 21 can be formed to be considerably narrower than the air passage space 20, and the passage speed of the pressurized air at the air outlet 21 can be considerably increased. As a result, it becomes possible to exert a stronger force that pushes the sprayed object forward, and it is also possible to exert a stronger force that pulls the sprayed object behind the air outlet 21 forward. Can be sprayed more strongly continuously.

  In addition, the spray nozzle device and spray system have a simple configuration, are easy to handle, and are easy to maintain, and the nozzle mixing cylinder A has a very simple configuration and is easy to maintain.

It is a partially cutaway perspective view illustrating a spray nozzle device. It is a vertical front view which illustrates a spray nozzle apparatus. It is a vertical front view which illustrates a spray nozzle. It is a vertical side view which illustrates a spray nozzle. It is a vertical front view which illustrates another spray nozzle. It is a vertical front view which illustrates a water injection nozzle.

Hereinafter, the present invention will be described with reference to the drawings.
The present invention mainly relates to a spray nozzle device in a spray machine and a spray nozzle device used when reinforcing (repairing) a slope in road construction or residential land development by spraying cement material. It is related to the spraying system using.

  In the spray nozzle device of the present invention, the spray base formed by adding at least sand to the cement is dry-pumped to the tip portion in the long hose C using a spray machine, The sprayed material is formed by adding water separately pumped to the tip end portion to the sprayed substrate, and when spraying the sprayed material, the mixed state of the sprayed substrate and water is improved, The sprayed object can be reliably and accurately sprayed to a desired position (targeted position or relatively distant position) from the tip of the spray nozzle B.

Specifically, the nozzle mixing cylinder A is mounted on the tip of the hose C, and the spray nozzle B is mounted on the tip of the nozzle mixing cylinder A.
The mixing cylinder A for nozzles is formed by arranging a plurality of flattened narrow portions 3 on a cylindrical tube base at appropriate intervals along the tube core direction, and the adjacent flattened narrow portions 3 are adjacent to each other. Are formed in different directions around the cylindrical core.
Further, the spray nozzle B includes a nozzle base body B1 attached to the tip portion of the nozzle mixing cylinder A and a nozzle exterior body B2 attached to the nozzle base body B1 in an exterior shape, and the tip end of the nozzle base body B1. An air passage space 20 is provided between the outer peripheral surface of the inner cylinder 11 formed on the flange and the inner peripheral surface of the central portion of the nozzle outer body B2, and the tip of the nozzle outer body B2 is the inner periphery of the hook. A tapered inclined inner peripheral surface 17 that gradually narrows as the tip moves toward the surface is formed, and an air outlet 21 is provided between the inclined inner peripheral surface 17 and the tip of the nozzle base B1. An air hose attachment portion 15 communicating with the air passage space 20 is formed in the nozzle exterior body B 2, and pressurized air supplied from the air hose D attached to the air hose attachment portion 15 is blown through the air passage space 20. Exit Ejected from 1, and is configured so as to be discharged from the nozzle outer body B2 tip so as to surround the object to be sprayed was a pressurized air pumped from the hose C.

In the spray system of the present invention, a spray base formed by adding at least sand to cement is dry-pumped to the tip portion in the hose C using a spray machine, and the tip of the hose C is fed to the spray base. A water injection nozzle E formed so as to be able to add water separately pumped to the close part, and a spray nozzle device as described above configured to spray a sprayed object in which water is mixed into the spray base material to a desired position; It is equipped with.
The water injection nozzle E includes a water injection nozzle base E1 attached to the tip portion of the hose C and a water injection nozzle exterior body E2 attached so that the tip of the water injection nozzle base E1 covers the flange portion. A water passage space 40 is provided between the outer peripheral surface of the interior cylinder portion 31 where the tip of the nozzle base E1 is formed on the side and the inner peripheral surface of the water injection nozzle exterior body E2, and the tip of the water injection nozzle exterior body E2 is A tapered inclined inner peripheral surface 37 is formed on the inner peripheral surface of the crocodile so that the tip gradually becomes narrower as the tip moves toward the crocodile, and a water outlet 41 is provided between the inclined inner peripheral surface 37 and the tip of the water injection nozzle base E1. The water injection hose attachment portion 35 communicating with the water passage space 40 is formed in the water injection nozzle exterior body E2, and the water pumped from the water injection hose F attached to the water injection hose attachment portion 35 is allowed to pass through the water passage space 40. Water outlet 4 Ejected from, the water sprayed substrate being pumped is added to annular colloid from the hose C is obtained by configured to pumping the spray nozzle device.

  The nozzle mixing cylinder A is made of, for example, a metal material as appropriate, has a cylindrical shape, and a hose attachment portion 1 having a base end provided with a female screw portion on an inner peripheral surface thereof, It has a cylindrical shape and includes a distal end portion provided with a male screw portion on the outer peripheral surface thereof, and a cylindrical intermediate portion between the distal end portion and the hose attachment portion 1, and a plurality of flattened constrictions are formed in the intermediate portion. The portions 3 (for example, the first flattened narrowed portion 3a and the second flattened narrowed portion 3b) are formed at appropriate intervals along the cylinder core direction.

And the said hose attachment part 1 is the front-end | tip part of the hose C (or the front-end | tip part of the water injection nozzle exterior body E2 of the water injection nozzle E, or the front-end | tip part of the short hose C attached to the front-end | tip part of the water injection nozzle exterior body E2) ) Can be screwed.
The tip of the hose attachment portion 1 is provided with a packing 2 at the back wall step portion, and is formed so as to be interposed between the tip end surface of the hose C and the back wall step portion of the hose attachment portion 1. .

Moreover, the front-end | tip part of the mixing cylinder A for nozzles is formed so that it can be screwed by the base end part of the spray nozzle B (nozzle base | substrate B1).
The packing 4 is formed between the front end surface of the front end of the mixing cylinder A for nozzles and the back wall step of the spray nozzle B (the connecting portion 10 of the nozzle base B1).

The plurality of flattened narrow portions 3 (for example, the first flattened narrowed portion 3a and the second flattened narrowed portion 3b) provided in the intermediate portion of the nozzle mixing cylinder A are formed in, for example, an elliptical cross section, and Each flat direction is arranged in a direction different by 90 degrees around the cylindrical core.
In addition, the base end part of the intermediate part of the mixing cylinder A for nozzles, the front-end | tip part of the intermediate part of the mixing cylinder A for nozzles, and the some flat constriction part 3 (For example, the 1st flat constriction part 3a and the 2nd flat part) The intermediate portions of the constricted portion 3b) are each formed in an annular cross section, and the flat constricted portion 3 (for example, the first flat constricted portion 3a and the second flat constricted portion 3b) is approached from these cross-sectional annular portions. It is configured to be gradually deformed into an elliptical cross section. That is, when a sprayed object in which water is added to the spray base material is pumped through the nozzle mixing cylinder A, a plurality of flattened narrow portions 3 (for example, a first flattened narrowed portion 3a and a second flattened narrowed portion). When passing through 3b), it is automatically squeezed from different directions, and the spray base material and water can be mixed smoothly and in a well-balanced manner so that a sprayed article in a good mixed state can be obtained. ing.

  The spray nozzle B includes, for example, a nozzle base B1 provided with a connecting portion 10 that is screwed to a male screw portion at a tip portion of the nozzle mixing cylinder A, and a male portion provided on the outer peripheral surface of the central portion of the nozzle base B1. It has a female threaded portion 16 screwed to the threaded portion 12 on the inner peripheral surface of the flange and a nozzle exterior body B2 mounted on the nozzle base B1 in an exterior shape.

The nozzle base B1 is formed, for example, in an appropriate cylindrical shape by a metal material as appropriate. The nozzle base B1 has a cylindrical shape, and is screwed to the inner peripheral surface of the male screw portion at the tip portion of the nozzle mixing cylinder A. The connecting portion 10 is provided with a female screw portion, and is integrally connected to the distal end portion of the connecting portion 10 and has an inner cylindrical portion 11 having a cylindrical shape. A male screw portion 12 is formed on the outer peripheral surface of the flange.
In addition, the flange portion of the inner cylinder portion 11 is formed in a tapered cylindrical shape that slightly narrows toward the tip. In other words, the sprayed object that is pumped and passes through the interior cylindrical portion 11 is slightly squeezed so that the sprayed object can be discharged with good balance during spraying.

  The nozzle exterior body B2 is formed, for example, in a substantially cylindrical shape by a metal material as appropriate, and has a female threaded portion 16 on the inner peripheral surface of the base and an air hose attached on the outer surface of the central portion. A portion 15 is provided, and an inclined inner peripheral surface 17 is formed on the inner peripheral surface near the tip.

The female screw portion 16 can be screwed to the male screw portion 12 of the nozzle base B1, and is formed so that the nozzle outer body B2 can be moved and adjusted in the cylinder core direction with respect to the nozzle base B1. A packing 13 is interposed between the base end surface of the nozzle outer package B2 and the stepped portion of the connecting portion 10 of the nozzle base B1 (see FIG. 3).
By the way, as an interposing means for the packing 13, for example, an extended cylinder portion that slides on the outer peripheral surface of the connecting portion 10 of the nozzle base B1 is extended at the base end portion of the nozzle exterior body B2, and the inner peripheral surface of this extended cylinder portion. The packing 13 may be interposed between the outer peripheral surface of the connecting portion 10 and the outer peripheral surface of the connecting portion 10 (see FIG. 5).

  Further, an air passage space 20 is provided between the outer peripheral surface of the inner end of the inner cylinder portion 11 and the inner peripheral surface of the central portion of the nozzle exterior body B2 so as to communicate with the air passage space 20. An air hose attachment portion 15 is formed (see FIGS. 3, 4, and 5). The air passage space 20 is formed in a relatively large space, and is formed so that the pressurized air supplied from the air hose D attached to the air hose mounting portion 15 can wrap around more smoothly.

Further, the inclined inner peripheral surface 17 is formed in a tapered shape so that the tip gradually becomes narrower as the tip moves, and a substantially annular air outlet is provided between the inclined inner peripheral surface 17 and the tip of the nozzle base B1. The pressurized air supplied from the air hose D is ejected from the air outlet 21 through the air passage space 20, and the sprayed object to be pumped from the hose C is surrounded by the pressurized air. In this manner, the nozzle B can be discharged from the tip. That is, the pressurized air ejected from the air ejection port 21 moves along the inclined inner peripheral surface 17 and then comes into contact so as to surround the article to be sprayed, and concentrates the force that pushes it forward. In addition, the blown object can be blown out in a well-balanced manner, and there is pressurized air around the blown blown article, and rebound loss occurs on the blowing surface such as a slope. Etc., and it is formed to be a beautiful spray surface.
The air outlet 21 is formed to be considerably narrower than the air passage space 20, and is formed so that the passage speed of the pressurized air at the air outlet 21 can be considerably increased (speed increase). Yes. That is, it is formed so that a strong force can be exerted to push the blown object forward, and a strong force can be exerted to pull the blown object behind the air outlet 21 forward.

  By the way, the nozzle exterior body B2 is configured to be able to adjust the area of the air outlet 21 by adjusting the mounting position with respect to the nozzle base B1 in the front-rear direction by the female screw portion 16 and the male screw portion 12. The area of the air outlet 21 is adjusted according to the article to be sprayed and the spraying conditions so that the pressure and speed of the pressurized air can be adjusted easily and finely. It is formed so that the optimum blowout of pressurized air can be performed.

The hose C is formed to be quite long, and a base end portion thereof is appropriately connected to a spraying machine so that the spraying base material can be smoothly pumped.
By the way, the spraying base material to be pumped through the hose C may be one obtained by dry-feeding a cement kneaded with at least sand added from the sprayer to the tip of the hose C, or cement (or sand) ) From the spraying machine to the tip of the hose C, and sand (or cement) may be dry-pumped by another path so that they can be merged in the portion near the tip of the hose C.

  In addition, C1 in the figure is a water injection pipe to which the tip of the hose C is connected to a hook. This water injection pipe C1 is a spray base material that is pumped through the inside of the hose C, and water is reliably and easily provided at the tip of the hose C. It is made to be added to.

  The air hose D is formed so that the base end thereof is connected to a compressor or the like and the tip end portion thereof is attached to the air hose attachment portion 15, and pressurized air from the compressor is supplied to the air hose attachment portion 15. The one formed so that it can be smoothly fed.

  The water injection nozzle E includes, for example, a water injection nozzle base E1 provided with a connecting portion 30 that is screwed to a male screw portion of a tip portion of a hose C (or an appropriate connector attached to the tip of the hose C), and the water injection nozzle. It has a female screw portion 36 screwed to a male screw portion 32 provided on the outer peripheral surface of the central portion of the base E1, and a water injection nozzle exterior body E2 attached to the water injection nozzle base E1 in an exterior shape. Has been.

  The water injection nozzle base E1 is formed, for example, in an overall cylindrical shape by using a metal material as appropriate. The water injection nozzle base E1 has a cylindrical shape and a tip of a hose C (or an appropriate connector attached to the tip of the hose C) on the inner peripheral surface thereof. It consists of a connecting part 30 provided with a female screw part screwed to the male screw part of the part, and an inner cylinder part 31 provided at the tip part of the connecting part 30, and an outer peripheral surface of the central part of the inner cylinder part 31 A male screw part 32 is formed in the.

  The water injection nozzle exterior body E2 is formed, for example, in a stepped cylindrical shape having a thin tip with an appropriate metal material, and has a female screw portion 36 at the base end portion, and water injection on the outer surface of the center portion. A hose attachment portion 35 is provided, and an inclined inner peripheral surface 37 is formed on the inner peripheral surface near the front end of the central portion. The front end portion has a cylindrical shape smaller in diameter than the base end portion and the central portion, and the front end of the outer peripheral surface is The male thread part screwed by the female thread part of the hose attachment part 1 of the mixing cylinder A for nozzles is formed.

  The female screw portion 36 can be screwed onto the male screw portion 32 of the water injection nozzle base E1, and is formed so that the water injection nozzle outer body E2 can be moved and adjusted in the cylinder core direction with respect to the water injection nozzle base E1. A packing 33 is interposed between the inner peripheral surface of the central portion of the water injection nozzle exterior body E2 and the outer peripheral surface of the central portion of the water injection nozzle base E1.

  Further, a water passage space 40 is provided between the outer peripheral surface of the inner end of the inner cylinder portion 31 and the inner peripheral surface of the central portion of the water injection nozzle exterior body E2 so as to communicate with the water passage space 40. The water injection hose attachment part 35 is formed in (see FIG. 6). The water passage space 40 is formed in a relatively large space, and is formed so that the pressurized water supplied from the water injection hose F attached to the water injection hose attachment portion 35 can be more smoothly circulated.

Further, the inclined inner peripheral surface 37 is formed in a taper shape such that the tip gradually becomes narrower as the tip moves, and a substantially annular water jet is formed between the inclined inner peripheral surface 37 and the tip of the water injection nozzle base E1. An outlet 41 is provided around the spray base, and pressurized water supplied from the water injection hose F attached to the water injection hose attachment 35 is ejected from the water jet outlet 41 through the water passage space 40 and pumped from the hose C. It is formed so that pressurized water is added to the material reliably and in a balanced manner from the surroundings. That is, the pressurized water ejected from the water ejection port 41 is formed so that it moves along the inclined inner peripheral surface 37 and then mixes well with the spray base material, and a force that pushes it forward is concentrated. Has been.
The water outlet 41 is formed to be considerably narrower than the water passage space 40, and is formed so that the passage speed of the pressurized water at the water outlet 41 can be significantly increased (speed increase). That is, the pressure water is formed so as to mix well with the spray base material, and is formed so as to exert a stronger force that pushes the spray base material forward.

  By the way, the water injection nozzle exterior body E2 is configured to be able to adjust the area of the water outlet 41 by adjusting the mounting position with respect to the water injection nozzle base E1 in the front-rear direction by the female screw portion 36 and the male screw portion 32. In addition, the area of the water outlet 41 is adjusted according to the spraying base material, spraying conditions, etc., so that the pressure and speed of the pressurized water can be adjusted easily and finely, and the optimum pressure water according to the spraying base material It is formed so that it can be blown out smoothly.

  The water injection hose F is formed so that the base end thereof is connected to a pump or the like and the tip end portion thereof is attached to the water injection hose attachment portion 35, and the pressurized water from the pump can be smoothly sent to the water injection hose attachment portion 35. What was formed in this way is adopted.

  By the way, the specific configuration, shape, and dimensions of the spray nozzle device, the specific configuration, shape, dimensions, and material of the nozzle mixing cylinder A, the specific configuration, shape, dimensions, and material of the hose mounting portion 1, and the specifics of the packing 2 Configuration, shape, dimensions, material, placement position, specific configuration, shape, dimensions, number, placement position, spray nozzle B of the flattened narrowing portion 3 (first flattened narrowing portion 3a, second flattened narrowing portion 3b) Specific configuration, shape, dimensions, material, specific configuration of packing 4, shape, dimensions, material, arrangement position, specific configuration of nozzle base B1, shape, dimensions, material, specific configuration of nozzle exterior body B2 , Shape, dimensions, material, specific configuration of connecting portion 10, shape, dimensions, material, specific configuration of interior cylinder portion 11, shape, dimensions, material, specific configuration of male screw portion 12, shape, size, arrangement Installation position, specific configuration of packing 13, shape, dimensions, material, arrangement position , The specific configuration, shape, dimensions, arrangement position of the air hose mounting portion 15, the specific configuration, shape, dimensions, arrangement position of the female screw portion 16, the specific configuration, shape, dimensions of the inclined inner peripheral surface 17, Arrangement position, specific configuration of air passage space 20, shape, dimensions, arrangement position, specific configuration of air jet 21, shape, dimensions, arrangement position, specific configuration of hose C, shape, dimensions, material , Specific configuration, shape, dimensions, material, arrangement position of water injection pipe C1, specific configuration of air hose D, shape, dimensions, material, specific configuration of water injection nozzle E, shape, dimensions, material, water injection nozzle base Specific configuration, shape, dimensions, material of E1, specific configuration, shape, dimensions, material of water injection nozzle exterior body E2, specific configuration, shape, dimensions, material of connecting portion 30, specific configuration of interior cylinder portion 31 , Shape, dimensions, material, specific configuration and shape of male screw part 32 Dimensions, location, specific configuration of packing 33, shape, dimensions, material, location, specific configuration of water injection hose attachment 35, shape, size, location, specific configuration of female thread 36, Shape, dimensions, arrangement position, specific configuration of the inclined inner peripheral surface 37, shape, dimensions, arrangement position, specific configuration, shape, dimensions, arrangement position of the water passage space 40, specifics of the water outlet 41 The configuration, shape, dimensions, arrangement position, specific configuration, shape, dimensions, material, and the like of the water injection hose F are not limited to those in the illustrated examples, and can be set and changed as appropriate.

  Thus, the spray nozzle device of the present invention improves the mixing state of the sprayed object to be dry-pumped, and places the sprayed object at a desired location (a location aimed by the operator or a location slightly away from the operator). The spraying system using the spray nozzle device of the present invention can smoothly and reliably mix the spray base material and water, and can be sprayed smoothly. The mixing state of the sprayed object is improved, and the sprayed object is smoothly and reliably sprayed to a desired place (even at a place aimed by the operator or a relatively remote place). .

A Mixing cylinder for nozzle 1 Hose attachment part 2 Packing 3 Flat constriction part 3a First flat constriction part 3b Second flat constriction part 4 Packing B Spray nozzle B1 Nozzle base B2 Nozzle exterior body 10 Connection part 11 Internal cylinder part 12 Male screw Part 13 Packing 15 Air hose attachment part 16 Female thread part 17 Inclined inner peripheral surface 20 Air passage space 21 Air outlet C Hose C1 Water injection pipe D Air hose E Water injection nozzle E1 Water injection nozzle base body E2 Water injection nozzle exterior body 30 Connection part 31 Interior Tube part 32 Male thread part 33 Packing 35 Water injection hose attachment part 36 Female screw part 37 Inclined inner peripheral surface 40 Water passage space 41 Water outlet F Water injection hose

Claims (3)

  A spray base formed by adding sand to the cement is dry-pumped to the tip of the hose using a spray machine, while water separately pumped to the tip of the hose is added to the spray base. The spray nozzle device is configured such that a sprayed object is formed and sprayed to a desired position, and a nozzle mixing cylinder attached to a tip portion of a hose, and the nozzle mixing cylinder The nozzle mixing cylinder is formed by arranging a plurality of flattened narrow portions on a cylindrical tube base at appropriate intervals along the cylinder core direction, and adjacent to the nozzle nozzle cylinder. The flattened narrowing portions to be provided are formed such that the respective flattening directions are different directions around the cylindrical core, and the spray nozzle includes a nozzle base body mounted on a tip portion of the nozzle mixing cylinder, Outside the nozzle substrate An air passage space is provided between the outer peripheral surface of the inner cylinder part where the tip of the nozzle base is formed on the side and the inner peripheral surface of the central part of the nozzle outer body. In addition, a tapered inclined inner peripheral surface is formed such that the tip of the nozzle exterior body gradually narrows on the inner peripheral surface of the nozzle, and the tip of the nozzle outer body is formed between the inclined inner peripheral surface and the nozzle substrate tip. An air hose is provided around the nozzle, and an air hose mounting part communicating with the air passage space is formed on the nozzle exterior body. Pressurized air supplied from the air hose attached to the air hose mounting part is passed through the air passage space. A spray nozzle device in a sprayer, characterized in that a sprayed object ejected from an air outlet and pumped from a hose can be discharged from the tip of a nozzle outer body so as to be surrounded by pressurized air.   The nozzle exterior body is mounted by screwing the female thread portion onto the male thread portion of the nozzle base, and is formed so that the mounting position of the nozzle exterior body relative to the nozzle base can be adjusted in the front-rear direction. 2. The spray nozzle device in a spray machine according to claim 1, wherein the area is adjustable.   The spraying base formed by adding sand to the cement is dry-pressed to the tip of the hose using a spraying machine, and water separately pumped to the tip of the hose is added to the tip of the hose. A spray system comprising: a water injection nozzle formed as described above; and a spray nozzle device formed so as to spray a sprayed object in which water is added to a spray base material to a desired position. A water injection nozzle base mounted on the tip portion and a water injection nozzle exterior body mounted so that the tip of the water injection nozzle base covers the flange portion. A taper shape in which a water passage space is provided between the outer peripheral surface and the inner peripheral surface of the water injection nozzle outer body so that the tip of the water injection nozzle outer body gradually narrows toward the inner peripheral surface of the water Slope of In addition to forming a peripheral surface, a water spout is provided between the inclined inner peripheral surface and the tip of the water injection nozzle base, and a water injection hose mounting portion communicating with the water passage space is formed on the water injection nozzle exterior body. Water pumped from the water injection hose attached to the hose mounting part is ejected from the water outlet through the water passage space, and water is added to the spray base material pumped from the hose in a go-like shape and can be pumped to the spray nozzle device The spray nozzle device is composed of a nozzle mixing cylinder attached to the tip portion of the water injection nozzle and a spray nozzle attached to the tip portion of the nozzle mixing cylinder. The body is formed by arranging a plurality of flat constricted portions on the cylindrical tube base at appropriate intervals along the tube core direction, and the adjacent flat constricted portions are arranged so that each flat direction is around the tube core. Formed in different orientations, The attached nozzle is composed of a nozzle base that is attached to the tip of the nozzle mixing cylinder, and a nozzle outer body that is externally attached to the nozzle base. An air passage space is provided between the outer peripheral surface of the nozzle and the inner peripheral surface of the central portion of the nozzle outer body so that the tip of the nozzle outer body gradually narrows toward the inner peripheral surface of the hook. A tapered inclined inner peripheral surface is formed, and an air outlet is provided between the inclined inner peripheral surface and the tip of the nozzle base, and an air hose attachment portion communicating with the air passage space is formed in the nozzle exterior body. The pressurized air supplied from the air hose attached to the air hose mounting portion is ejected from the air outlet through the air passage space, and the sprayed object fed by the water injection nozzle is surrounded by the pressurized air. Nozzle A spraying system using a spray nozzle device, characterized in that it can be discharged from the front end of an exterior body.

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