JPH0737723Y2 - Nozzle for scouring device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a nozzle for an insulator device for hot-cleaning an insulator.

[0002]

2. Description of the Related Art Conventionally, a nozzle as shown in FIG. 7 has been used as a typical nozzle for an insulator cleaning device for cleaning contaminants on the surface of an insulator to prevent deterioration of insulation performance. There is. This nozzle has a nozzle tip 22 screwed to the outer periphery of the tip of a base 21, 23 is an O-ring, and 24 is a strainer. However, such a conventional nozzle for an washer has many problems as follows.

First, when the nozzle tip 22 is removed from the base 21 and reassembled for maintenance and inspection of the nozzle, the relative angle between the nozzle tip 22 and the base 21 is changed, so that the nozzle direction is adjusted. Is required. However, since the nozzle for the scouring device is installed near the limit of the safe separation distance with respect to the porcelain insulator, it was dangerous to adjust the direction of the nozzle while the line was live. Second, since the nozzle tip 22 is screwed to the base 21, it may be loosened by vibration, and in particular, when the nozzle is attached to a constantly vibrating object such as a transformer, there is a great danger. Also nozzle tip
If 22 dropped out and the insulator was damaged, there was a danger of a major accident. Thirdly, since it is necessary to tighten the nozzle tip 22 with a strong torque in order to prevent the above-mentioned loosening, it is not easy to disassemble and assemble, and it is necessary to use a pipe wrench with a long handle. It was dangerous to work under a hot line. Fourthly, it is not possible to judge from the appearance whether or not the nozzle tip 22 is tightened to the base 21 with a sufficient torque, and there is a drawback that it requires skill to tighten it with an appropriate torque.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art, does not require adjustment of the nozzle direction during reassembly, does not loosen the nozzle tip due to vibration, and attaches and detaches the nozzle tip as a tool. The present invention has been completed in order to provide a nozzle for a scouring device that can be easily performed without using a nozzle, and in which the engagement state of the nozzle tip can be easily determined in appearance.

[0005]

[Means for Solving the Problems] The above-mentioned problems are caused by engaging a nozzle tip with a bayonet mechanism on the outer periphery of the front part of a base in which a flow path for washing water is formed,
Between the rear end surface of the nozzle tip and the stepped portion of the base , a spout that prevents the backward movement for disengaging the nozzle tip.
This can be solved by a nozzle for a scouring device characterized in that a spacer made of a ring pin is elastically and detachably fitted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. In the first embodiment shown in FIGS. 1 and 2, reference numeral 1 is a base, in which a flow path 2 of washing water is formed. An annular projection 3 having notches 3a at two symmetrical positions is formed on the outer periphery of the front portion of the base 1, and the nozzle tip 4 is engaged with the annular projection 3 by utilizing the annular projection 3.

The nozzle tip 4 is engaged with the annular projection 3 of the base 1 by a well-known bayonet mechanism, and arcuate engagement claws 5 are formed at two symmetrical positions. The engaging claw 5 is formed in parallel with the end surface of the cylinder as shown in FIG. Then, after fitting the engaging claw 5 through the notch 3a of the annular projection 3 to the small diameter portion 10 of the base 1,
When the nozzle tip 4 is further moved to the tip side of the base 1 by rotating it 1/4 turn, the engaging claws 5 enter the symmetrical cutouts 9 at the two positions on the back surface of the annular projection 3 to ensure that the nozzle tip 4 is at the base It will be engaged with the annular projection 3 of No. 1. However, in order to release this engagement, it is necessary to retract the nozzle tip 4 in the direction of the base 1 to remove it from the notch 9 and rotate it in the opposite direction.

A step 6 is formed on the outer periphery of the base of the base 1. A spacer 8 is detachably fitted between the rear end surface 7 of the nozzle tip 4 engaged with the base 1 and the step portion 6 of the base 1. In the embodiment, the spacer 8 is a spring pin having a shape as shown in FIG. 2, and is elastically fitted to the step portion 6 of the base 1. Further, when the spacer 8 is fitted, the nozzle tip 4 cannot be moved backward to release the engagement.

Reference numeral 13 is an O-ring provided in an annular groove on the inner circumference of the nozzle tip 4, and 14 is a strainer provided inside the nozzle tip 4.

In the thus constructed nozzle for an insulator cleaning apparatus according to the present invention, the pressure water supplied from the base 1 is jetted toward the insulator device from the nozzle tip 4 which is engaged with the tip portion of the base 1 to wash the insulator. Is the same as the conventional one. And to disassemble for maintenance inspection of the nozzle,
First, if the spacer 8 is pulled out and then the nozzle tip 4 is axially retracted and rotated 1/4, the nozzle tip 4 is easily separated from the base 1. When reassembling, conversely, the nozzle tip 4 is fitted into the base 1 and rotated 1/4 turn, and then moved forward in the axial direction to move the spacer 8
Can be fitted.

As described above, the nozzle for the scouring device of the present invention is
Since the nozzle tip 4 is engaged with the base 1 by the bayonet mechanism, the angle of the nozzle tip 4 with respect to the base 1 can always be kept constant even during assembly, and the conventional screw fastening type No need for nozzle orientation adjustment unlike. The nozzle of the present invention has no risk of nozzle tip 4 from falling unless removed spacer 8, a spring pin spacers 8 as in Example Tona
So as not to fear to fall unplug by vibration as shall
If the nozzle is attached to an object that is constantly vibrating like a transformer, the nozzle tip 4 can be elastically fitted.
There is no danger of falling off.

Further, unlike the conventional screw type, the nozzle of the present invention can be attached and detached with a weak force, so that the work can be performed with bare hands without using a tool, and the nozzle can be operated even in a live line state. Maintenance can be performed. Moreover, in the nozzle of the present invention, the connection state of the nozzle tip 4 can be confirmed only by checking whether the spacer 8 is fitted, and anyone can easily perform the check.

As described above, the nozzle of the present invention is superior to the conventional one, but the nozzle of the first embodiment makes a precise 1/4 rotation of the nozzle tip 4 when it is attached or detached. It is not always easy to do. Therefore, in the second embodiment shown in FIG. 4, a part of the annular projection 3 is projected toward the small diameter portion 10 to form a positioning stopper 12. In FIG. 4, the stopper 12 is formed at two symmetrical positions, but it may be one stopper. This stopper 12 has on both sides a surface 12a and a surface 12b which abut against the surface 11 of the engaging claw 5 when the nozzle tip 4 is rotated by 1/4.

Then, when the nozzle tip 4 is inserted into the base 1 and then the nozzle tip 4 is rotated leftward toward the base 1, the surface 11 of the engaging claw 5 becomes the surface of the stopper 12 of the base 1 as shown in FIG. It hits 12a and rotation stops. When the nozzle tip 4 is moved so as to be separated from the base 1 at that position, the back surface of the engaging claw 5 engages with the annular projection 3, and the two are joined. On the contrary, when the nozzle tip 4 is rotated rightward from this state, the surface 11 of the engaging claw 5 hits the surface 12b of the stopper 12 and stops rotating as shown in FIG. It can be disassembled by moving it away from 1. As described above, by providing the stopper 12 in the second embodiment, the rotation angle of the nozzle tip 4 can be regulated, and disassembly and assembly can be performed more easily. Although the rotation angle is set to 1/4 rotation in the above embodiments, it goes without saying that this angle can be changed as appropriate.

[0015]

As described above, the nozzle for a scouring device of the present invention does not require adjustment of the direction of the nozzle when reassembling, and prevents backward movement for disengaging the nozzle tip.
Since a spacer consisting of a spring pin is incorporated, there is no risk of the nozzle tip slackening due to vibration, and the nozzle tip can be easily attached and detached without the use of tools, and the engagement state of the nozzle tip is visible. It can be easily determined, and there is an advantage that maintenance and inspection can be performed safely even under a hot line condition. In particular, if a stopper is provided as in the second embodiment, there is an advantage that disassembly and assembly can be performed more easily.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 3 is a front view showing a spacer used in an embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 5 is a sectional view illustrating an operating state of the second embodiment.

FIG. 6 is a sectional view illustrating an operating state of the second embodiment.

FIG. 7 is a cross-sectional view showing a conventional nozzle.

[Explanation of symbols]

 1 Base 2 Flow Path 3 Annular Protrusion 4 Nozzle Tip 5 Engaging Claw 6 Step 7 Rear End Face 8 Spacer 9 Notch 10 Small Diameter 11 Face 12 Stopper 12a Face 12b Face 13 O-ring 14 Strainer

Claims (1)

[Scope of utility model registration request] 1. A nozzle tip is engaged with the outer periphery of a front portion of a base in which a flow passage of washing water is formed, by a bayonet mechanism, and between a rear end surface of the nozzle tip and a step portion of the base. , A spacer consisting of a spring pin that blocks the backward movement for disengaging the nozzle tip
A nozzle for a scouring device , which is elastically and detachably fitted.