JPH0733890Y2 - Spraying device - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an improvement of a spraying device in which a fitting shaft of a nozzle body attached to a mouth portion of a container is fitted in a hollow of a cylindrical nozzle cover having a small hole on a tip surface and an opening at a base end. .

[Prior art]

A conventional spray nozzle is a large nozzle cap that is similar in shape to a cylindrical nozzle tip with a proximal end opened on a cylindrical fitting shaft that has a flow passage in the center of the nozzle body attached to the mouth of the container. It has a double outer fitting structure. That is, the nozzle tip is equidistant (for example, 120
Holes are provided at intervals. In addition, the nozzle cap has a small hole through the center of the tip surface.
The inner surface of the tip surface is provided with a substantially conical recessed portion and a guide groove that extends in a spiral shape from the recessed portion and has an extended end that is capable of communicating with the hole of the tip at the time of fitting. The composition is known. However, in the above configuration, it is necessary to combine the three members of the nozzle body, the nozzle tip, and the nozzle cap, and there is a drawback that the number of constituent components is large and the component management and assembly process are complicated. Therefore, for example, in the spray nozzle of Japanese Patent Publication No. 61-48986, a nozzle cover having a tubular portion provided with an opening and a small hole and a nozzle body fitted with a gap in the tubular portion of the nozzle cover are provided. And a water passage communicating with the gap, and the nozzle body is integrally formed with a spraying portion at a portion facing a small hole provided in the nozzle cover.

[Problems to be solved by the device]

In the above-mentioned conventional configuration, the spray nozzle is composed of two parts, but since the spraying part is provided in the nozzle body, there is a drawback that the spray angle cannot be arbitrarily set or changed. This invention was created as a result of earnest research in view of the above circumstances, and its main problem is to provide two components, a nozzle cover and a nozzle body, and to provide a spray angle setting unit on the nozzle cover. Accordingly, it is an object of the present invention to provide a spraying device that can easily set or change the spraying angle.

[Means for solving problems]

In order to solve the above problems, the present invention provides (a). (B) A spraying device in which a fitting shaft of a nozzle body attached to the mouth of a container is fitted in the hollow of a cylindrical nozzle cover having a small hole on the tip surface and an opening at the base end. A relay flow channel configuration in which a nozzle body has a fitting shaft formed with a tapered outer surface at the tip end, and a fitting shaft that penetrates the fitting shaft and communicates with the flow path body, and the tip opens outside the tapered surface of the fitting shaft. And a nozzle cover fitting groove that is annularly opened along the outer periphery of the fitting shaft, and (c). The nozzle cover has a concave portion that forms a conical void chamber having a diameter that gradually decreases toward the small hole, a spray angle setting surface that includes an inner peripheral wall that forms the concave portion, and the outside of the concave portion. At the tip end having an inclined surface that abuts the tapered surface of the fitting shaft, a plurality of guide grooves radially formed on the inclined surface of the tip end, and the nozzle cover fitting groove, and the relay flow A base portion that covers the passage forming portion to form a relay passage, and (d). The nozzle cover is fitted into the nozzle cover fitting groove, the front of the guide groove is covered with the tapered surface of the fitting shaft to form a guide flow path that is continuous with the recessed portion, and the rear of the guide groove is the relay flow path. The technical measures are taken to enable communication, to form a swirl flow in the concave portion, and to set the injection angle on the spray angle setting surface.

[Action]

Insert the fitting shaft of the nozzle body into the hollow of the nozzle cover. The liquid in the container flows from the liquid supply hole of the nozzle body to the guide groove at a predetermined pressure, flows into the guide groove, and flows into the concave portion of the nozzle cover while reducing the pressure to form a swirl flow. Since a conical spray angle setting surface is formed along the inside of the recess along the small hole, the liquid is sprayed from the small hole at a predetermined spray angle while being guided by this inclined surface.

【Example】

A preferred embodiment of the spraying device of the present invention will be described below with reference to the drawings. In the spraying device 1 shown in FIG. 1, a nozzle body 3 is attached to the mouth of a container 2 filled with a liquid under a predetermined pressure by an appropriate structure, and a nozzle cover 4 is fitted on the nozzle body 3. There is. That is, as shown in FIG. 1, the nozzle body 3 has a cylindrical introduction cylinder 6 having a flow path body 5 that extends in the longitudinal direction at the center and introduces a liquid under a predetermined pressure from the container 2, and the introduction cylinder 6. A nozzle cover fitting groove 7 that is open in the orthogonal direction on the upper side of the fitting shaft, and a fitting shaft 8 that projects forward in the fitting groove 7 and has a tapered surface on the outer circumference of the tip. The tip of the introduction tube 6 has a publicly known structure that is fitted into the mouth of the container 2 and pushed down so as to be able to return, and a liquid of a predetermined pressure can be discharged from the container 2 to the flow path body 5 side. it can. Here, the fitting shaft 8 of the nozzle body 3 is, as shown more clearly in FIGS. 2 and 3 (a), a proximal end portion 3A thereof having a large-diameter columnar shape, and the fitting body 8 has the above-mentioned flow passage body. A liquid supply hole 9 communicating with 5 is provided in the axial direction. In this embodiment, two liquid supply holes 9 are provided at intervals of 180 degrees, but the number of liquid supply holes 9 and the relay flow passages 12 described later are not particularly limited. A partition wall portion 10 having a diameter smaller than that of the base end portion 8A is projectingly provided in the middle of the fitting shaft 8 in the circumferential direction, and a communication groove 11 communicating with the liquid supply hole 9 is formed in the partition wall portion 10. A hole is formed which communicates with the flow path body 5 when the nozzle cover 4 described later is fitted to form a relay flow path 12 together with the liquid supply hole 9. In the illustrated example, the tip of the communication groove 11 is opened with a gap from the tapered surface of the fitting shaft 8, so that when the nozzle cover 4 described later is fitted into the nozzle cover fitting groove 7, the guide groove 44 It is possible to circulate the discharged liquid by providing a ring-shaped space between the rear side of the space and the guide flow path 44 so as to be able to communicate with the relay flow path 12 through the gap. In the above embodiment, the relay flow path 12 is provided with the liquid supply hole 9 as described above.
And the hole formed by the communication groove 11, it is possible to form a step portion for engaging the nozzle cover 4 in the middle of the fitting shaft 8, but instead of this configuration, the liquid supply hole It suffices to form a series of flow paths by using an appropriate structure such as a series of hole structures in which 9 is extended to the communication groove 11. Further, a cylindrical core portion 8b having a diameter smaller than that of the partition wall portion 10 and having a substantially mountain-shaped tip is provided at the tip of the fitting shaft 8 so as to project. Next, as shown in FIGS. 4 and 3 (b), the nozzle cover 4 fitted in the nozzle cover fitting groove 7 without any gap is
It has a cylindrical shape with a base end that has a small hole 41 in a tip surface 40 that is frusto-conical. The inner surface of the tip surface 40 of the nozzle cover 4 communicates with the small hole 41 and also has a recessed portion between the core portions 8B at the tip of the fitting shaft 8.
42 is bored to form a void chamber. A spray angle setting surface 43, which communicates with the small hole 41 and gradually widens at a predetermined angle and widens in a conical shape, is formed in the recessed portion 42. A guide groove 44 extending in a spiral shape in the circular tangential direction of the concave portion 42 is formed on the inner surface of the tip surface 40 of the nozzle cover 4 in the concave portion 42. In the present embodiment, three guide grooves 44 are arranged at intervals of 120 degrees, but the number of the guide grooves 44 is not particularly limited in the present invention. In short, a part of the extending end thereof is the relay passage 12
It only needs to be able to communicate with. Then, the inclination angle α of the guide groove 44 from the concave portion 42 to the small hole 41, and the inclination angle β of the spray angle setting portion 43 of the concave portion 42, the actual spray angle from the small hole 41 It is determined. Further, the abutting end of the core portion 8B that abuts against the guide groove 44 is set so as to be parallel to the above-mentioned tilt angle, corresponding to the tilt angle. Then, as shown in FIG. 3 (c), the liquid in the container can communicate with each other by overlapping with the relay channel 12 formed by the communication groove 11 in a part of each of the guide grooves 44. As a result, the liquid contained in the container passes through the two relay channels 12 from the channel body 5 at a predetermined pressure and the three communication grooves 11 are formed.
Of each of the extended ends. Then, the liquid flows into the void chamber in the recessed portion 42 through the guides 44 arranged in a spiral shape while weakening the pressure. In the concave portion 42, the liquid forms a swirl flow and is sprayed to the outside from the small hole 41 corresponding to the inclination angle α while being guided by the inclined wall surface of the spray angle setting surface 43. In this invention, since the spray angle setting portion 43 and the guide groove 44 are provided in the nozzle cover 4, if the spray angle is different, it is easy to change the nozzle cover 4 while leaving the nozzle body 3 as it is. It is advantageous that the spraying device can be changed to have different spraying conditions. Next, the spraying device 1 shown in FIGS. 5 and 6 shows a different embodiment in which the spraying device of the present invention is combined with an attachment. This spraying device 1 has a structure in which a hair brush type attachment 20 is integrally fixed to a nozzle body 3. That is, the nozzle body 3 has a flattened tip, a plurality of brush-like protrusions 21 are integrally provided on the upper surface of the nozzle body 3, and the nozzle cover fitting groove 7 is provided in the center thereof. It consists of In the figure, S is a spring that holds the flat surface at the tip. The introduction cylinder 6 of the nozzle body 3 is different from the above embodiment in that it is arranged in the same direction as the extending direction of the fitting shaft 8, but other configurations of the fitting shaft 8, the configuration of the nozzle cover 4, etc. Since it is the same as the above-mentioned embodiment, its explanation is omitted. According to this, the liquid is sprayed at a predetermined spray angle by pressing the brush type attachment 20 against the hair. In addition, various attachments can be attached to the nozzle body attached to the spraying device of the present invention according to various uses. Further, in this invention, the application of the spraying device and the kind of the liquid contained in the container are not particularly limited, and the present invention can be applied to any use and kind.

[Effect of device]

Since the spraying device is composed of two parts, the nozzle cover and the nozzle body, the number of parts, which has been composed of three parts in the past, is reduced, management is facilitated, and the number of assembling steps is reduced, so that the cost can be reduced. The fluid discharged from the relay channel is guided by the guide groove to form a spiral flow in the concave portion to weaken and uniformize the pressure, and is further guided by the spray angle setting surface to determine the spray angle. Therefore, stable spraying can be performed. Further, the spray angle of the spray device can be changed simply by changing the nozzle cover.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing a spraying device of the present invention, FIG. 2 is a perspective view of an essential part showing a fitting shaft portion, and FIG. 3 (a) is a front view of the fitting shaft. (B) is a front view of the nozzle cover, (c) is a front view when the fitting shaft is fitted in the nozzle cover, FIG. 4 is a side sectional view showing the nozzle cover, and FIG. FIG. 6 is a partial sectional view showing an example in which an attachment is provided on the nozzle body, and FIG. 6 is a front view of the same. 1 …… Spraying device 2 …… Container 3 …… Nozzle body 4 …… Nozzle cover 8 …… Mating shaft 12 …… Relay passage 40 …… Tip surface 41 …… Small hole 42 …… Concave part 43 …… Spray angle setting unit 44 …… Guide groove

Claims (4)

[Scope of utility model registration request] 1. A spraying device, wherein a fitting shaft of a nozzle body attached to the mouth of a container is fitted into the hollow of a cylindrical nozzle cover having a small hole on the tip end surface and an opening at the base end, A relay flow channel configuration in which a nozzle body has a fitting shaft formed with a tapered outer surface at the tip end, and a fitting shaft that penetrates the fitting shaft and communicates with the flow path body, and the tip opens outside the tapered surface of the fitting shaft. And a nozzle cover fitting groove that annularly opens along the outer periphery of the fitting shaft, and the nozzle cover forms a conical cavity having a conical cavity whose diameter gradually decreases toward the small hole. And a spray angle setting surface formed of an inner peripheral wall forming the concave portion, a tip portion having an inclined surface that abuts the tapered surface of the fitting shaft outside the concave portion, and an inclined surface of the tip portion The guide grooves formed in a plurality of radial shapes on the above and the nozzle cover fitting grooves are fitted to cover the relay flow path forming section. Has a base that forms a relay channel, is fitted to the nozzle cover to the nozzle cover fitting groove,
The front of the guide groove is covered with a tapered surface of the fitting shaft to form a guide flow path that connects to the recess, and the rear of the guide groove can communicate with the relay flow path, and a swirl flow is formed in the recess. A spraying device characterized in that a spraying angle is set on a spraying angle setting surface. 2. The relay flow path forming section comprises a plurality of liquid supply holes penetrating the fitting shaft and a communication groove communicating with the liquid supply holes, the tip of which is a tapered surface of the fitting shaft. The spraying device according to claim 1, wherein the spraying device is opened with a gap. 3. The spraying device according to claim 1, wherein the guide groove extends on the inner surface of the tip end surface of the nozzle cover in an assumed tangential direction of the concave portion. 4. The spraying device according to claim 1, wherein an attachment is integrally attached to the tip of the nozzle body, and a recess having a fitting shaft is provided at the center thereof to fit the nozzle cover. .