JP3026061U - Half-face mask dryer - Google Patents

Abstract

(57) [Abstract] [Problem] The space for equipment installation in the controlled area of a nuclear power plant is limited. An object of the present invention is to provide a half-face mask drying device which can be installed in a nuclear facility requiring work in such a narrow space. SOLUTION: A hot air oscillating drying drum 15 is provided in an upper part of the drying device main body 11, and a preheat drying chamber 24 is provided in a lower part of the drying device main body, so that the air flowing in from the top of the drying device main body 11 is heated.
After being heated by the heater 14, the drying drum 15 containing the half-face mask M preheated and dried in the preheating drying chamber 24 is passed through,
The half-face mask was dried in the drying drum 15, and warm air containing moisture was passed through the preheating drying basket 25 in the lower preheating drying chamber 24, pre-dried, and then exhausted.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 In nuclear power plants, etc., radioactive particles and other gaseous or granular harmful substances are floating. Therefore, when working in such areas, workers wear protective masks to enter and work to prevent inhalation of these harmful substances. Normally, a full-face mask that covers the entire face is used in areas with high floating volume, and a half-face mask that covers only the mouth and nose as shown in Figure 1 is used in areas with relatively low floating volume. During the busy season, hundreds are used per day. The present invention relates to an apparatus for drying a cleaned mask in a short time to a reusable state after using these masks used in large quantities, especially half masks.

[0002]

[Prior art]

 As a drying device for a half-face mask, there is a device developed by the present applicant (referred to as a prior invention) (Actual Kaihei 6-58900). This consists of two devices, a hot air swing drying device and a preheating drying device. One of the features is that one of the preheat dryers has been cleaned and the half-face mask waiting for drying is exposed to the hot air exhaust of the hot air oscillating device to preheat and dry it in advance. .

The outline of the drying device will be described with reference to FIG. The drying apparatus main body A is provided with a swingable drying drum 3, in which the half-face mask M is dried with warm air. Air that has flowed into the drying drum 3 through the upper opening 1 and has been heated by the heater-2 is sent to be dried. The air containing moisture that has dried the half-face mask M is sent to the preliminary dryer B through the duct 5 by the air blower 4. Here, the half-face mask M containing a large amount of water before being put into the drying drum 3 is pre-dried. Then, the exhaust gas is exhausted to the duct 6 leading to the exhaust gas treatment system of the nuclear power plant.

However, the device according to the prior invention has the following improvements. In other words, the area required for equipment installation within the controlled area of a nuclear power plant is very limited. Therefore, it is difficult to newly install a nuclear power plant that does not have a space for introducing the previously devised device, that is, a space for installing two devices.

[0005]

[Problems to be solved by the device]

 The space for equipment installation within the controlled area of a nuclear power plant is limited. Therefore, there are many cases where installation is not possible with the dedicated space of the conventional device (previous invention). If the preheating drying device B in the conventional device is built in and integrated with the drying device main body A, the space occupied by the device can be greatly reduced. An object of the present invention is to provide a half-face mask drying device that can be installed in a nuclear facility where work in such a narrow space is required.

[0006]

[Means for Solving the Problems]

 A hot air oscillating drying drum 15 is provided on the upper part of the drying device main body 11, and a preheating drying chamber 24 is provided on the lower part of the drying device main body 11. After the air flowing from the top of the drying device main body 11 is heated by the heater 14, The hot air oscillating drying drum 15 accommodating the half-face mask M that has been preheated and dried in the preheat drying chamber 24 is penetrated to dry the half face mask M in the drying drum 15 so that warm air containing moisture is supplied to the lower preheat drying chamber. A preheated dry basket 25 in 24 was pre-dried and then exhausted. The hot-air oscillating drying drum 15 includes a cylindrical portion 16 made of punching metal, a net 17 horizontally stretched in a notch portion corresponding to 1/4 of the circumferential angle of the cylindrical portion 16, and one end of the cylindrical portion 16. Was opened to put in the half-face mask M, and the other end of the cylindrical portion 16 was covered with a disc having a shaft 18 at the center so that it could swing around the shaft 18. The preheating drying chamber 24 is divided into left and right by a partition plate 27 at the bottom of the drying device main body 11, and a slide mechanism 30 is provided in the left and right preheating drying chambers 24a and 24b, on which the preheating drying basket 25 can be placed and removed. Provided.

[0007]

[Embodiment of device]

 A description will be given based on FIGS. 3 to 7. 3 is a front view of the half-face mask drying device, FIG. 4 is a left side view, FIG. 5 is a right side view, FIG. 6 is a top view, and FIG.

A circular door 12 through which the half-face mask M (FIG. 1) is taken in and out is provided on the front surface of a main body (hereinafter referred to as a main body) 11 of a steel plate. A heater 14 for heating the air taken in through the mesh openings 13 on the upper surface is provided on the upper portion of the main body 11, and a drying drum 15 (FIG. 7) is provided at the central portion of the main body 11. The drying drum 15 is formed of punching metal 16 into a cylindrical shape, and about 1/4 thereof is replaced with a mesh 17 made of stainless wire or the like. The circular front surface is open so that the half-face mask M can be moved in and out. A steel disk having a shaft 18 at the center is attached to the circular rear surface. The shaft 18 is supported on the rear surface of the main body 11 and projects to the outside of the rear surface, and a pulley 19 is attached to the tip thereof.

The pulley 19 is connected via a belt and another pulley 20 to a drive motor 21 provided on the lower outside of the rear surface of the main body 11, and the drive motor 21 is connected to the drive motor 21. The drying drum 15 is rotated while being decelerated by the pulleys 19 and 20 by the rotation. An exhaust air motor 22 and an exhaust duct 23 are provided on the lower outside of the rear surface of the main body 11, and the air taken in from the mesh opening 13 on the upper surface of the main body 11 by driving the exhaust air motor 22 is a heater. The half-face mask M, which is heated by the heater 14 and enters from the net 17 of the drying drum 15 and is placed in the drying drum 15, is discharged from the punching port 16a of the drying drum 15 and is the first preheating provided in the lower part of the apparatus. Pass through the preheated drying basket 25 containing the mask M in the drying chamber 24a (on the left side of the device), pass through the lower space 26, pass through the bottom of the preheating drying basket 25 in the second preheating drying chamber 24b (on the right side of the device), and the mouth of the upper part. Through the exhaust duct 23 and discharged to the outside of the main body 11.

FIG. 9 shows the preheated drying basket 25 and the sliding mechanism. The preheated drying basket 25 has a side surface covered with a plastic 28 to prevent hot air from leaking, and a bottom surface made of a wire net 29. It can be easily pulled out to the front of the device by the slide mechanism 30 and can be easily taken out by the handle 31 on the top of the car.

The drying device having the above configuration operates as follows (see FIG. 11). The air that has entered through the mesh opening 13 at the top of the main body 11 of the drying device is a preheated drying basket in the first preheating drying chamber 24a that is divided into a heater 14 → a drying drum 15 → a partition plate 27 on the left and right. After passing through 25, passing through the lower space 26, the preheating drying basket 25 in the adjacent second preheating drying chamber 24b is penetrated upward, returns to the lower space 26 again, and is discharged from the exhaust duct 23. Since the half-face mask M, which has been preheated and dried at the lower portion of the main body 11, is charged in the upper drying drum 15, the drying is efficiently performed.

[0012]

【effect】

 Since it is configured as described above, it has the following advantages over the prior invention. Occupied area; In the mask dryer of the previous invention, a hot air oscillating dryer and a preheat dryer were manufactured and installed separately. In the present invention, these two devices are provided in the upper and lower parts of the drying device main body 11 so as to be integrated with each other, so that the occupied area of the device can be reduced. Therefore, even in the limited space of a nuclear power plant facility, the half mask M can be dried comfortably. Manufacturing cost: Box manufacturing cost, various mechanisms, sensor cost, etc. can be reduced by integrating the preheat dryer in the hot air oscillating dryer.

Regarding the reduction of the number of installation work steps; in the installation work of the device of the invention devised, exhaust heat transportation from the hot air oscillating drying device to the preheat dryer is carried out after the duct installation work and the heat insulating material installation work. Heat is transferred to the facility exhaust system, but the work for connecting to the preheat dryer is eliminated. This will reduce working hours and cost of connecting equipment. Regarding the reduction of the number of decontamination work steps; in the work process of the previous invention, it was necessary to take out the dry basket from the dryer and carry it to the hot air oscillating drying device after the completion of preheat drying. Opening the door of the chamber, pulling out the drying basket forward by the sliding mechanism and putting it in the upper swing drying unit reduces the number of work steps and labor.

[Brief description of drawings]

FIG. 1 shows an example of a half-face mask to be dried by the device of the present invention.

FIG. 2 is a conceptual diagram of the prior invention.

FIG. 3 is a front view of the drying device of the present invention.

FIG. 4 is a side view of the drying device of the present invention.

FIG. 5 is a rear view of the drying device of the present invention.

FIG. 6 is a plan view of the drying device of the present invention.

FIG. 7 is a perspective view of a drying drum.

FIG. 8 shows a slide mechanism for a preheated drying basket.

FIG. 9 is a plan view of the same.

FIG. 10 shows a preheated cage.

FIG. 11 is an explanatory view of a hot air passage in the half-face mask drying device according to the present invention.

[Explanation of symbols]

1 Opening 2 Heater 3 Drying Drum 4 Exhaust Fan 5,6 Duct 10 Exhaust Fan 11 Dryer Main Body 12 Door-13 Mesh Opening 14 Heater 15 Drying Drum 16 Punching Metal 17 Net 18 Shaft 19,20 Pulley 21 Drive motor 22 Exhaust air motor 23 Exhaust duct 24a, 24b Preheat drying chamber 25 Preheat drying basket 26 Lower space 27 Partition plate 28 Plastic 29 Wire mesh 30 Slide mechanism 31 Handle

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiyuki Ishikawa 1408 Takada, Kashiwa-shi, Chiba Atox Technology Development Center (72) Inventor Teiichiro Suzuki 5-12 Ginza, Chuo-ku, Tokyo Atox Co., Ltd. Within

Claims (3)

[Scope of utility model registration request] 1. A hot-air oscillating drying drum (15) is provided above the drying device main body (11), and a preheating drying chamber (2) is provided below the drying device main body (11).
4) equipped with a half-face mask (M) preheated and dried in the preheat drying chamber (24) after heating the air flowing in from the top of the dryer body (11) with the heater (14). Dynamic drying drum (1
5) is penetrated, the half-face mask (M) is dried in the drying drum (15), and warm air containing moisture is passed through the preheating drying basket (25) in the lower preheating drying chamber (24) to prepare a spare. A half-face mask drying device that is designed to be dried and then exhausted. 2. A hot air oscillating drying drum (15) comprises a cylindrical portion (16) made of punching metal, and a quarter of the circumferential angle of the cylindrical portion (16).
The mesh (17) stretched horizontally in the notch corresponding to
One end of (16) is opened to put in the half-face mask (M), and the other end of the cylindrical part (16) is covered with a disc having a shaft (18) at its center.
The half-face mask drying device according to claim 1, wherein the half-face mask drying device is swingable around (18). 3. The preheating drying chamber (24) is divided into left and right by a partition plate (27) at the bottom of the drying device body (11), and the left and right preheating drying chambers (2) are separated.
The half-face mask drying device according to claim 1, further comprising a slide mechanism (30) on which a preheated drying basket (25) is placed and can be put in and taken out at the bottom of the inside of 4a, 24b).