JPS6235340Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to prevent electrical shock during work by discharging static electricity accumulated in bent pipes, flexible pipes, hoses, etc. This invention relates to an electrostatic discharge device for a power spreader that can be safely and freely moved to any place, even in workplaces such as fields, vegetable gardens, orchards, without being affected by the heat.

Conventionally, when spraying chemicals in fields, vegetable gardens, orchards, etc., by carrying a frame equipped with a chemical tank, engine, blower, etc. on one's back, the chemicals flowing out from the chemical tank are sent to a snake pipe through a bent pipe connected to a fan case. When the agent passes through hoses, etc., static electricity generated by friction between the agent and the inner wall surface of these tubes gradually accumulates in the area as the spraying operation continues.
Workers often receive an electrical shock the moment they touch this area, putting them at risk of physical injury during spraying work. Therefore, in order to remove the static electricity stored in the power spreader, a conductor such as a chain or wire is attached to a suitable location on the power spreader and brought into contact with the ground to cause a discharge. Since the body is in contact with the ground, a worker may accidentally step on the grounded part while working, or the grounded part may become caught in a branch or weed, resulting in breakage or breakage, causing it to lose its function as a conductor. There was also a fear of losing it. Therefore, this invention aims to correct the above-mentioned drawbacks and provide a static electricity discharger for a power spreader that allows the user to work with peace of mind at all times by discharging the static electricity accumulated during the spraying operation into the air. A ground wire is installed along the bent pipe connected to the fan case and at least the inner wall surface of the flexible pipe, and the discharge body attached to the ground wire is suspended in a free state with a space left above the ground to generate an air discharge. It was designed to allow

To describe an embodiment of this invention with reference to the drawings below, a bent pipe 2 is rotatably attached to the discharge part 1 of a fan case B supporting a drug tank T and a fuel tank F, and a flexible pipe is attached to the tip of the bent pipe 2. 3 is further connected to its tip with a hose 4 made of a flexible material, and at least a ground wire 5 is attached with a fastener or soldered along the inner wall surface of the bent pipe 2 and the flexible pipe 3. A sheet or brush-like discharge body 6 made of a dischargeable material is attached and suspended in a free state in the tube 2, and
By positioning the lower end of the discharge body 6 slightly below the waist of the worker P as shown in the figure, it is possible to easily discharge the discharge in the air and to prevent it from getting caught in weeds, branches, etc. be. Note that when the drug passes through the bent tube 2, a large amount of static electricity is generated due to friction, so it is preferable to install the discharge body 6 in the bent tube 2, but if necessary, the discharge body 6 may be installed under the fan case B. It can also be installed directly on the In the drawing, the discharge body 6 is constructed by bundling the middle of the brush-like pieces e made of a discharging material, and attaching a conductive locking piece d to the ground wire 5 at the tied part. It is not limited to this, but other suitable forms can be selected, and the ground wire 5 may be extended to a part of the hose 4. In the figure, j is the outlet of the hose 4, E is the engine, A is the air purifier, M is the muffler cover, and 7 is the backpack frame.

Since this device has the above-mentioned configuration, when spraying a chemical, the engine E is activated to generate pressurized air in the fan case B, and the chemical in the chemical tank T is sprayed into the bent pipe 2 by the pressurized air. When spraying from the spout hole j of the hose 4 through the flexible pipe 3 to the desired area to be sprayed, static electricity generated by friction with the chemical on the inner walls of the bent pipe 2, the flexible pipe 3, and the hose 4 is discharged via the ground wire 5. After being collected in the discharge body 6, it is discharged into the air from the discharge body 6, so even when a worker grasps the bent pipe 2 to change the direction of spraying the medicine during work, there is no electric shock caused by static electricity. Since you don't feel it on your body, you can continue working with peace of mind, and the discharge body is suspended in a free state, and its lower end does not touch the ground, so you don't have to step on it with your feet during the spraying process. In addition, there is no risk of getting caught on branches, weeds, etc. and being cut or damaged, and because it uses air discharge, it can be used at any time and anywhere, regardless of the situation in the workplace, and the structure is extremely simple. Because of this, the cost for discharging is extremely low and has practical benefits.

[Brief explanation of drawings]

The drawing is an explanatory diagram of a main part of an embodiment of this invention. B...Fan case, 2...Bent pipe, 3...Stork pipe, 4...Hose, 5...Ground wire, 6...Discharge body, g...Ground.

Claims (1)

[Scope of utility model registration request] A ground wire is installed along the inner wall of at least the bent pipe connected to the fan case and the flexible pipe, and the discharge body attached to the ground wire is suspended in a free state with a space left above the ground to generate an air discharge. A static electricity discharger for a power spreader.