JPH0417256Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is designed to prevent the chemicals, etc. from scattering and adhering to the clothing or body surface of the worker, or to the trachea, during work in which chemicals, solvents, or dust are handled. This invention relates to a backpack-type air curtain device that can effectively prevent suction through the air curtain device.

[Prior Art] Conventional measures for preventing chemicals, solvents, dust, etc. from scattering, adhering to, and being inhaled by workers when handling chemicals, solvents, dust, etc. are listed below.

(a) Wearing rain gatsupa.

(b) Wearing a full-face safety helmet.

(c) Wear safety glasses and a dust mask.

(d) Removal by pressurized air from an air compressor equipped with a handy type prime mover.

(e) Pressurized air removal from stationary motorized air compressors.

(f) Removal by pressurized air via a long hose.

[Problems to be solved by the invention] In the above (a) to (c), it becomes very complicated to wear.
(d) and (e) are difficult to transport to uneven ground or high places. (f) makes transportation and handling complicated. Further, in the conventional technology, there are problems in that work activities are slow, various protective equipment are frequently worn out, and inspection and maintenance are not easy.

The purpose of this invention is to eliminate these problems of conventional countermeasures, and to develop a backpack-type air curtain device that is highly portable and easy to handle, and that can effectively prevent chemicals from adhering to and being inhaled by workers. It is to provide.

[Means for Solving the Problems] In the backpack-type air curtain device according to this invention, a backpack frame 10 made of a pipe has a vertical portion 11a extending vertically along the back of the worker carrying the frame.
The rear overhang part 11b overhangs rearward from the lower end of the vertical part 11a, and the front overhang part 11c overhangs forward from the upper end of the vertical part 11a.
and an air compressor 20 driven by this prime mover 18 are installed, and the inside of the pipe is used as a pressurized air conduit 28 that communicates with the discharge port of the air compressor 20. The nozzle 30 attached to the projecting portion 11c is opened.

[Operation] A worker carries the backpack-type air curtain device on his back and performs a predetermined task in an environment where chemicals, solvents, dust, etc. are present. An air compressor is driven by a prime mover to produce pressurized air. This pressurized air is
It passes through the conduits within the pipes that make up the backpack frame and is ejected from each nozzle. In this way, an air curtain is formed around the worker, and harmful particles such as drugs are blown away by the air curtain, and are prevented from adhering to or being inhaled by the worker.

[Example] Hereinafter, this invention will be described with reference to an example of the drawings.

1 and 2 are a side view and a view from the worker's side of an embodiment of this invention, respectively, and the backpack frame 10 has a vertical portion 11a extending vertically along the worker's back, It has a rear overhang portion 11b that overhangs rearward from the lower end of this vertical portion 11a, and a front overhang portion 11c that overhangs forward from the upper end of the vertical portion 11a, and is manufactured from a pipe. A backrest 12 is fixed to the center of the vertical portion 11a. The pair of backpack bands 14 are connected at their upper ends to the upper sides of the vertical section 11a, and at their lower ends are hooked to the left and right lower ends of the vertical section 11a. The waist band 16 is fixed to the lower end of the vertical portion 11a, is placed on the worker's waist, and is tightened around the abdomen. The prime mover 18 and the air compressor 20 driven by the prime mover 18 are mounted on the rear overhang 11b, and the connecting pipes 22 bypass the rear of the prime mover 18 and the air compressor 20 to compress air at their upper and lower ends, respectively. It is connected to the discharge port of the machine 20 and the rear end of the rear overhang 11b. An on-off valve 24 and a purifier 2 are installed in the middle of the rear overhanging portion 11b.
6 is provided, and the purifier 26 is filled with activated carbon and a filter. The conduit 28 configured inside the pipe projects upward and further forward, and is connected to the left and right front ends of the rear projecting portion 11b at the lower ends of the left and right, respectively, and is connected to the left and right front ends of the rear projecting portion 11b.
0 and a connecting pipe 22 to the discharge port of the air compressor 20. Nozzles 30 are attached to the front surface of the vertical portion 11a of the conduit 28 and the lower surface of the front projecting portion 11c at appropriate intervals.

FIG. 3 is a detailed structural diagram of the nozzle 30. The one-spherical elastic body 32 is fixed to the conduit 28 and has a hemispherical recess, in which the nozzle body 34 is seated. The assembly nut 36 is screwed onto the outer periphery of the single spherical elastic body 32 and presses the spherical nozzle body 34 into the hemispherical concave portion of the single spherical elastic body 32.
This prevents the withdrawal of A center hole 38 is formed in the nozzle body 34 , and this center hole 38 communicates with the inside of the conduit 28 through a connection port 40 of the one-spherical elastic body 32 . The nozzle body 34 has a center hole 38 to the connection port 40.
It is possible to swing within an appropriate angle while maintaining communication between the two, and it can be held at any arbitrary angle within the above-mentioned angle by applying pressure to the one-spherical elastic body 32 by the assembly nut 36. Thereby, the direction of the nozzle body 34 can be adjusted as appropriate.

The operation of the embodiment will be explained. The backpack frame 10 is carried on the back of the worker during work involving chemicals, solvents, dust, etc. Air compressor 20 is prime mover 1
8 maintains the drive state, and the on-off valve 24 is opened. The pressurized air generated by the air compressor 20 is guided to the conduit 28 via the connecting pipe 22 and the rear overhang 11b. When the pressurized air passes through the purifier 26, fine particles in the pressurized air are filtered by a filter in the purifier 26, and malodorous components are adsorbed by activated carbon in the purifier 26. For this purpose, dust-free and odorless pressurized air is sent to the conduit 28 and ejected from the nozzle 30. nozzle 30
An air curtain is formed by jetting out pressurized air to cover the entire area of the worker, especially the face.
Harmful particles such as chemicals in the air are caught up and blown away by the air curtain, preventing them from adhering to or being inhaled by workers. Furthermore, the air curtain generates a cool breeze around the worker, promoting sweating and heat dissipation from the worker.

FIG. 4 shows another manner in which the air compressor 20 and the like are mounted on the rear projecting portion 11b of the backpack frame 10. The prime mover 18 and the air compressor 20 are placed on the rear overhang 11b via an elastic buffer 44,
Since the vibrations of the prime mover 18 and the air compressor 20 are absorbed by the elastic buffer 44, the vibrations are absorbed by the backpack frame 10.
This prevents the information from being transmitted to the worker via the

[Effects of the invention] As described above, according to this invention, an air curtain is generated around the worker during work with drugs, etc., and harmful particles such as drugs are caught in the air curtain and blown away. Therefore, attachment and inhalation of these harmful particles to the worker can be prevented, and a cool breeze can be generated around the worker to promote sweating and heat dissipation of the worker, thereby improving the working environment.

The prime mover and air compressor are mounted on a backpack frame, making them easy to handle, mount, and transport, improving work efficiency, allowing use on rough terrain and at high places, and making inspection and maintenance easier. It is easy to use, there is little wear of parts, etc., and labor can be reduced.

Since the air curtain device of this invention is of a backpack type, the operator has both hands free, which improves the degree of freedom during work.

Since the backpack frame also serves as a conduit for pressurized air, piping is simplified.

The backpack-type air curtain device of this invention is
It can be used in various work sites such as pesticide spraying work that handles chemicals, solvents, dust, etc., painting work, work that handles odorous substances, cleaning work, and dust treatment work.

[Brief explanation of drawings]

Figures 1 and 2 are a side view of the embodiment and a view from the operator's side, Figure 3 is a detailed structural diagram of the adjustable nozzle, and Figure 4 is an air compressor attached to the rear overhang of the backpack frame. It is a figure which shows another mounting aspect. 10... Back frame, 18... Prime mover, 20... Air compressor, 28... Conduit, 30... Nozzle.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The backpack frame 10 made of a pipe has a vertical portion 11a that extends vertically along the back of the worker carrying the backpack, and a rear portion that extends rearward from the lower end of this vertical portion 11a. It includes an overhanging portion 11b and a front overhanging portion 11c that overhangs forward from the upper end of the vertical portion 11a, and a prime mover 18 and an air compressor 20 driven by the prime mover 18 are mounted on the rear overhanging portion 11b. In addition, the interior of the pipe serves as a pressurized air conduit 28 that communicates with the discharge port of the air compressor 20, and is opened to a nozzle 30 attached to the vertical portion 11a and the front extension portion 11c. (2) Utility model registration claim 1, in which a purifier 26 in which a cleaning material or deodorizer is loaded is interposed in a conduit 28 between the discharge port of the air compressor 20 and the nozzle 30. The described backpack air curtain device. (3) Utility model registration claim 2, wherein the cleaning material is a filter and the deodorizing agent is activated carbon.
The backpack-type air curtain device described in Section 1. (4) The backpack-type air curtain device according to any one of claims 1 to 3, wherein the nozzle 30 is a freely adjustable nozzle whose direction can be adjusted as appropriate. (5) The backpack air compressor according to any one of claims 1 to 4, wherein the prime mover 18 and the air compressor 20 are mounted on the backpack frame via a buffer body 44. curtain device.