JPH0451880Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a nozzle for static electricity removal. This relates to a structure that eliminates static electricity that is generated when sprayed from.

[Conventional technology]

Generally, when two or more different objects come into contact with each other and electromove to form an electric double layer, and when these objects are separated by mechanical action, the objects will be left with static electricity. That is, when a flowing liquid, powder, jetted mist, etc. that has contact friction moves on the inner wall of the tube, static electricity is generated. If the fluid charged with static electricity is injected into a storage tank or other place filled with flammable gas, there is a risk that the static electricity will ignite the flammable gas and cause an explosion. For this reason, static electricity elimination nozzles have conventionally been known for eliminating static electricity generated when spraying from a nozzle body.

As a conventional example of this nozzle for static electricity removal, several conductive wires are connected to the tip edge of the nozzle body surrounding the spout, and these conductive wires are composed of several removable short wires. When fluid is injected from individual nozzles, a disk-shaped tension piece and a vane-shaped guide piece are provided to ensure the tension of the conductor wire, and static electricity is eliminated by the conductor wire (Utility Model No. 57-177557) No.) is known.

[Problem that the invention attempts to solve]

However, in the conventional example described above, the static elimination effect is insufficient, and the conductor wire connects multiple short wires,
Furthermore, since a tension piece or the like must be provided for each short wire, there are problems in that the structure is complicated and assembly is labor-intensive.

An object of the present invention is to provide a nozzle for static electricity removal that can improve the static electricity removal effect and has a simple structure.

[Means for solving problems]

In the present invention, a frame is attached to a nozzle body whose base end is connected to a tube, and a grounded conductive sieve-shaped member is attached to the frame in a direction crossing the axial direction of the nozzle body at the tip side of the nozzle body. A plurality of conductive elongated members are attached to a conductive sieve-like member.

[Effect]

As a result, the present invention eliminates static electricity from the fluid charged with static electricity that is injected from the nozzle body by using the conductive sieve member and the conductive elongated member to improve the static elimination efficiency. This object is achieved by eliminating a member for tensioning the electrically conductive elongated member.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings. Here, the same components in each embodiment are given the same reference numerals, and the explanation will be omitted or simplified.

A first embodiment is shown in FIGS. 1 and 2. In FIG. 1 showing the overall configuration, a base end of a nozzle body 2 is connected to a tube 1 made of cloth,
A conductive mounting member 4 is attached to the tip of the nozzle body 2.
The static electricity elimination nozzle 3 according to the present embodiment is attached through the tube 1, and fluids such as disaster prevention steam, oil, water, powder, and jet mist that have circulated in the tube 1 are injected from the nozzle body 2 for static electricity elimination. It is adapted to be brought into contact with the nozzle 3.

As shown in FIG. 2, the nozzle body 2 has a cylindrical grip portion 2 connected to the tube 1.
0, and a first cylindrical body 21 attached to this grip part 20. The mounting member 4 is attached to this first cylindrical body 21, and these first cylindrical bodies 2
1 and the mounting member 4 are connected by a coupler structure. That is, the mounting member 4 has a flange portion 23C in the middle, and a second cylinder body 23 that is provided on the outer periphery of the first cylinder body 21 so as to be movable relative to the first cylinder body 21 in the axial direction.
, a ball 22 interposed between the first and second cylindrical bodies 21 and 23, and a ball 22 provided on the outer periphery of the second cylindrical body 23 so as to be movable in the axial direction of both the cylindrical bodies 21 and 23. The ball 22 is connected to the cylindrical bodies 21 and 23
and a third cylinder 24 that presses in the axial direction of the cylinder to restrict relative movement between the first cylinder 21 and the second cylinder 23. It is prevented from coming off by a flange-shaped stopper 27 formed on the first cylindrical body 21 and a flange portion 23C of the second cylindrical body 23. Further, the nozzle body 2 is made electrically conductive and is connected to a conductive wire 10 incorporated into the fabric of the tube 1. Therefore, the static electricity removed from the static electricity eliminating nozzle 3 passes through the mounting member 4, the nozzle body 2, and the conducting wire 10, and is grounded via a fire hydrant (not shown) or the like.

An attachment ring 31 of the static electricity eliminating nozzle 3 and four attachment ribs 32 formed along its axial direction are attached to the attachment portion 23B formed at the tip of the second cylindrical body 23. As shown in FIG.
3 is connected. An O-shaped auxiliary ring 34 is attached to the middle of these ribs 33 in a direction perpendicular to the axial direction of the nozzle body 2, and a cross rib 35 for reinforcing this ring 34 is attached to the inside of this auxiliary ring 34. ing. Here, the frame 30 is constituted by the mounting ring 31, the mounting rib 32, and the rib 33, and the frame 30, the auxiliary rib 34, and the cross rib 35 are
It is said to be made of aluminum.

On the base end side of this frame 30, in close proximity to the nozzle body 2, a first sieve surface member 41 having a small diameter disk shape is provided.
Further, on the tip side thereof, that is, on the tip side of the rib 33, a large-diameter disk-shaped second sieve surface member 42 is attached in a direction perpendicular to the axial direction of the nozzle body 2, respectively. These sieve surface members 41 and 42 are made of aluminum, and their sieve surfaces 41A and 42A are in the form of a lattice.

Between the first sieve member 41 and the second sieve member 42, there is a diameter as a conductive elongated member.
A large number of 0.5 mm aluminum wires 51 are connected. At this time, each wire 51 has its both ends connected to the sieve surface 41A of the sieve surface members 41 and 42,
Connected at any point on 42A.

Here, the frame 30 and the auxiliary ring 3 described above are
4, the cross rib 35, the first and second sieve-shaped members 41, 42, and the wire 51 constitute the static electricity eliminating nozzle 3, and the nozzle 3 has a substantially truncated conical shape.

In such a configuration, the static electricity eliminating nozzle 3 assembled by welding or the like is attached to the tip of the nozzle body 2 attached to the tube 1 via the attachment member 4. Thereafter, the fluid is ejected from the nozzle body 2 through the tube 1 toward the object to be ejected.

Then, the fluid comes into contact with the static electricity eliminating nozzle 3 consisting of the first and second sieve-like members 41, 42, wire 51, etc., and as a result, the static electricity charged in the fluid is removed from the static electricity eliminating nozzle 3, the attachment It is grounded via the member 4, the nozzle body 2, and the conducting wire 10.

According to this embodiment, the first and second
Since the contact area with the fluid can be increased by the sieve surface members 41, 42, wire 51, etc., the static elimination effect can be improved. Therefore, explosion of flammable gas caused by static electricity charged on the injected fluid can be prevented. Moreover, since the wire 51 is connected between the first and second sieve-like members 41 and 42, there is no need for a member in the middle of the wire 51 to tension the wire 51, simplifying the structure of the nozzle. It can be done. In addition, the static eliminator 3
Since it is made of aluminum, the weight of the nozzle can be reduced.

The above effect was confirmed using a detection device 60 shown in FIG. This device 60 is a current collector type potential measuring device (manufactured by Kasuga Electric Co., Ltd. [model KS-525]).
The specific configuration is a current collecting plate 61 and a measuring plate 62.
are connected with a neon electric wire 63, and a detection probe 64 is placed facing the measurement plate 62.
A measuring device 66 grounded to 4 through a grounding rod 65
is connected. As a result of injecting the fluid from the nozzle of this embodiment toward the current collector plate 61 of the detection device 60, a static elimination effect of 80% could be obtained.

A second embodiment of the invention is shown in FIGS. 3-5.

The second embodiment is different from the first embodiment in that the static electricity eliminating nozzle 3 is divided into a plurality of parts, the divided nozzles 3 are connected by a connecting member, and the structure of the conductive elongated member is changed. Different from the example.

That is, in the second embodiment, the static electricity removal nozzle 3
is divided into a plurality of parts (four in the illustrated example) to form a set of static eliminator kits 3A, and the end surfaces of the static eliminator kits 3A facing each other are provided with the same structure as the first and second sieve-like members 41 and 42. The third sieve member 4 of
3 are arranged, and these sieve surface members 41, 42,
43 has a diameter of 2 to 3 as a conductive elongated member.
A rod 52 made of aluminum with a diameter of 1 mm is connected.
At this time, both ends of the rod 52 are connected at arbitrary points on the sieve surfaces 41A, 42A, and 43A, as in the first and second embodiments. The static eliminator kit 3A
are connected by a connecting member 70, and this connecting member 70
As shown in an enlarged view in FIG. 5, a pipe 71 having a hole 71A on the outer periphery is fixed to the rib 33 of one static elimination kit 3A along the longitudinal direction of the rib 33. A rod 72 fixed to the rib 33 of the static eliminator kit 3A adjacent to the kit 3A is movable forward and backward. The locking member 74
is provided. At this time, the top of the locking member 74 is made spherical, and the inlet end of the rod 72 of the pipe 71 and the periphery of the hole 71A are tapered so that the rod 72 can move smoothly into and out of the pipe 71. It's becoming like that.

In the second embodiment having such a configuration, when fluid is jetted from the nozzle body 2, a predetermined number of static elimination kits 3A are connected by the connecting member 70 depending on the fluid jetting distance and the like. This connection is performed by advancing the rod 72 into the pipe 71, and as the locking member 74 comes into contact with the end of the pipe 71, it retracts against the biasing force of the spring 73 and is positioned in the hole 71A. Then the pipe 71 and rod 72 will stick out.
is securely locked. Thereafter, fluid is injected from the nozzle body 2 toward the object to be injected, as in the first embodiment. The static electricity charged on the injected fluid is
Static electricity is removed in the same way as in the first embodiment.

On the other hand, after the fluid injection is completed, the static electricity eliminating nozzle 3 can be divided by retracting the locking member 74 and removing the rod 72 from the pipe 41.

According to such a second embodiment, in addition to being able to achieve the same effects as the first embodiment, the following effects can also be achieved. That is, first, the static elimination kit 3A can be connected and used depending on the fluid injection distance, the amount of static electricity charged on the fluid, etc., so that the work can be diversified. Furthermore, since the conductive elongated member is a rod 52 having a larger diameter than the wire 51 according to the first embodiment, the strength of the conductive elongated member is increased compared to the first embodiment, and damage to the static electricity removal nozzle 3 is reduced. I can do it. In the second example, as in the first example, an experiment was conducted to confirm the static elimination effect using the apparatus shown in FIG. 7, and results similar to those in the first example were obtained.

FIG. 6 shows a third embodiment of the invention.

The third embodiment differs from the first and second embodiments in that the sieve-like member is a single sheet, and the conductive elongated member is a strip-shaped static neutralizing foil.

That is, in the third embodiment, the second sieve member 2 is attached to the front end side of the nozzle body of the frame 30, and the second sieve member 42 has a large number of strip-shaped static neutralizing foils 53 made of aluminum. installed. Furthermore, unlike the first and second embodiments, a grounding connection member 6 is connected to the sieve surface member 42 via a conductive wire 5.

In the third embodiment with such a configuration, when fluid is injected from the nozzle body 2 in the same way as in the first embodiment,
Static electricity charged on the injected fluid is eliminated via the second sieve member 42, the strip-shaped static eliminating foil 53, and the like. At this time, static elimination is performed while the band-shaped static elimination foil 53 flutters along the flow of the fluid due to the jetting force of the fluid.

According to the third embodiment, in addition to the same effects as those of the first and second embodiments, it is also possible to simplify the structure of the static electricity removal nozzle. Further, since the conductive wire 5 and the grounding connection member 6 are used, if there is a place where it can be grounded nearby, it can be grounded nearby, and furthermore, there is no need to pass a conducting wire through the tube 1, which is economical. Note that in the third embodiment, the first
Similarly to the second embodiment, an experiment was conducted to confirm the static elimination effect using the apparatus shown in FIG. 7, and results similar to those of the first and second embodiments were obtained.

In each of the above embodiments, the nozzle body 2 and the mounting member 4 were connected by a so-called coupler structure, but in the present invention, as shown in FIG. A first cylindrical body 25 is attached to the gripping portion 20 and has a male threaded portion, while a second cylindrical body 26 is attached to the mounting member 4 and has a female threaded portion and a flange portion 26C, and a mounting portion 26B to which the frame 30 is attached. The first and second cylindrical bodies 25 and 26 may be screwed together. According to this, in the male threaded portion of the first cylindrical body 25,
It is economical because the tip of the conventionally used water discharge nozzle can be removed and the static electricity eliminating nozzle can be attached via the attachment member 4. Furthermore,
The mounting member 4 and the nozzle body 2 may be fixed by welding or the like. However, if the nozzle main body 2 and the mounting member 4 are connected by the coupler structure as in each of the above embodiments, the nozzle main body 2 and the mounting member 4
This has the effect of making it easier to install. Also,
The sieve surface members 41 to 43 may have a stripe shape or a honeycomb shape in addition to a lattice shape. However, if they are shaped like a lattice, the structure of the sieve surface members 41 to 43 can be simplified and the fluid can be brought into contact with them efficiently. Further, the sieve surface members 41 to 43 do not necessarily need to be attached in a direction perpendicular to the axial direction of the nozzle body 2, as long as the direction intersects with the axial direction of the nozzle body 2. Furthermore, the sieve surface members 41 to 43 and the conductive elongated members 51 to 53 do not necessarily need to be made of aluminum;
It may be made of metal such as copper or iron. Further, the shape of the static electricity eliminating nozzle 3 is not limited to a truncated cone shape, but may be a cylindrical shape or other shapes. However, if the shape is a truncated cone, the fluid is normally injected radially from the nozzle body 2, so that the static elimination efficiency can be improved. Furthermore, in the second embodiment, the rod 72 of the connecting member 70 does not necessarily need to be provided with the spring 73 and the locking member 74, and the rod 72 may simply be inserted into the pipe 71. However, if the locking member 74 or the like is provided as in the above embodiment, the pipe 71 and the rod 72 can be securely locked.

[Effect of idea]

According to the present invention as described above, the static electricity removal effect can be improved and the structure of the static electricity removal nozzle can be simplified.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a first embodiment of the present invention, FIG. 2 is a sectional view of the nozzle body of the embodiment,
FIG. 3 is an overall perspective view of the second embodiment of the present invention;
FIG. 4 is a front view of a part of the divided static electricity eliminating nozzle, FIG. 5 is a sectional view of a connecting member that connects the divided static electricity eliminating nozzles, and FIG. 6 is a third embodiment of the present invention. FIG. 7 is a schematic configuration diagram of the device used to confirm the effects of the present invention.
FIG. 8 is a sectional view showing a modification of the connection structure between the nozzle body and the mounting member. 1...Tube, 2...Nozzle body, 3...Static electricity removal nozzle, 30...Frame, 41, 4
2, 43... sieve surface member, 51, 52, 53...
Wire, rod, strip-shaped conductive foil, 70...connecting member as a conductive elongated member.

Claims (1)

[Claims for Utility Model Registration] (1) A frame attached to a nozzle body whose base end is connected to a tube, and a frame attached to the frame in a direction intersecting the axial direction of the nozzle body at the distal end side of the nozzle body and grounded. 1. A nozzle for eliminating static electricity, comprising a conductive sieve-like member and a plurality of conductive elongated members attached to the conductive sieve-like member. (2) In claim (1) of the utility model registration claim, a plurality of the conductive sieve-like members are arranged along the axial direction of the nozzle body, and a plurality of conductive sieve-like members are arranged between the conductive sieve-like members. A nozzle for static electricity removal, characterized in that the conductive elongated member is connected.