JPH01151946A - Airtight container - Google Patents

Abstract

PURPOSE:To enable replacing a filter element integral with a casing in a safe manner at a low place, by providing an exhaust part on the outer side of the lower part of main body of a container with a feed part at the bottom. CONSTITUTION:An exhaust port 106 is provided in airtight engagement with the outer side of the lower part of a main body 101, while an upward flow of air from a bottom feed port of the main body toward and upper suction port of an exhaust duct 104 being maintained. An insert port 110 for a filter element integral with a casing and an exhaust-part cover 107 with a discharge port 111 are airtightly attached to the exhaust port 106, and a conduit for discharging air 108 is connected to said exhaust-part cover 107. When the filter element 109 is replaced, an airtight vinyl sheet is attached to a flange 112 provided on the discharge-port side of said cover 107, and then a new filter element integral with a casing for replacement is pushed into through the insert port 110 so that the existing filter element 109 integral with a casing 114 is discharged into the airtight vinyl sheet through the discharge port 111.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention maintains a negative pressure state by blocking the outside air and internal atmosphere and sucking the internal atmosphere. Concerning airtight storage boxes necessary for work involving dangerous drugs, etc.

(Prior Art) Packaging work for dangerous drugs and the like must be carried out in an airtight storage box that shuts off the outside air and internal atmosphere and maintains a negative pressure inside.

A conventional example will be explained with reference to FIGS. 4 and 5.

FIG. 4 is a longitudinal sectional view showing the overall structure of the airtight storage box.

In FIG. 4, reference numeral 1 indicates the airtight storage box body.

This airtight storage box main body 1 is placed and fixed on legs 2.

An air supply part 3 is installed at the bottom of the airtight storage box body 1.

On the other hand, an exhaust section 4 is installed on the ceiling of the airtight storage box main body 1.

An exhaust pipe 5 is connected to this exhaust section, and the exhaust pipe 5 is further connected to an exhaust pump (not shown).

Further, glove attachment holes 6, 6 are formed on both legs of the airtight storage box main body 1, and gloves 7.7 are installed in these mounting holes 6, 6 in the airtight storage box main body 1. There is.

Next, the structure of the exhaust section 4 will be explained in detail with reference to FIG.

FIG. 5 is a longitudinal sectional view showing the configuration of the exhaust section 4. As shown in FIG.

In FIG. 5, reference numeral 8 is a cover attached to close the opening 1a formed in the ceiling of the airtight storage box main body 1, and the upper opening 8a of the cover 8 is used for the above-mentioned exhaust gas. Piping 5 is connected.

Further, a mesh-shaped press plate 9 is attached to the ceiling opening 1a of the airtight storage box main body 1 from the inside of the airtight storage box main body 1 with a fastener 10.

Note that the holding plate 9 is rotatably supported at one end by a hinge 11.

installed in the condition.

The operation will be explained based on the above configuration.

The atmosphere inside the airtight storage box main body 1 is maintained by the aforementioned exhaust pump (
(not shown), the inside of the airtight storage box main body 1 is always maintained at negative pressure.

At this time, the air inside the airtight storage box main body 1 flows from the air supply section 3 at the bottom toward the exhaust section 4 at the ceiling (hereinafter referred to as "upflow"), as shown by the arrow in the figure.

In the exhaust section 4, the air first passes through the holding plate 9, and then passes through the filter element 12.

Then, it flows into the exhaust pipe 5 through the upper opening 8a of the cover 8 and is sucked into the exhaust pump.

Dust in the air stream is collected in the filter element 12.

By the way, the filter element 12 is replaced regularly.

The replacement work is performed in the following steps.

First, to attach the glove to the airtight storage box main body 1, put your hand into the glove 7 through the glove 7 and remove the stopper 10 through the glove 7.

Then, the holding plate 9 is opened, the filter element 12 is taken out, and replaced with a new filter element.

The filter element 12 is moved in and out of the airtight storage box main body 1 through an unillustrated ejection port using an airtight vinyl (not shown) so as not to impair airtightness.

The above configuration has the following problems.

- In other words, as mentioned above, the filter element replacement work is performed through a pair of gloves 7, and since the filter element 12 is installed on the ceiling of the airtight storage box body 1, it is not necessary to work at high places. In addition, there was a problem that the workability was poor and the replacement work required a long time.

■ As a result, there is a problem that a large amount of dust flows out to the exhaust pump side.

(2) Furthermore, there was also a problem in that the dust collected on the filter element 12 was scattered into the airtight storage box main body 1 during replacement.

(Problems to be Solved by the Invention) In this conventional configuration, the replacement work of the filter element 12 is work at a high place, and the work efficiency is poor and it takes a long time. The present invention has been made based on these points, and its purpose is to facilitate the replacement work of the filter element 12. This reduces the time required for the replacement process, prevents dust from flowing to the exhaust pump side and scattering dust into the airtight storage box body 1, and also allows the replacement work itself to be performed safely at low places rather than at high places. The purpose of the present invention is to provide an airtight storage box that can be used as a storage box.

[Structure of the invention]

(Means for solving the problem) That is, the airtight storage box according to the present invention includes a storage box main body having an air supply section at the bottom, an exhaust port airtightly provided on the outer lower side of the storage box main body, an exhaust duct that is airtightly attached to the exhaust port, extends upwardly within the storage box main body, and has a horizontally oriented suction port at its upper end;
Furthermore, the exhaust port is airtightly attached to the outside of the storage box body, and has an insertion port for inserting a filter element integral with the casing on one side, and an outlet for the filter element in the opposite direction for exhaust. An exhaust section cover connected to the piping, a flange provided on the discharge port side of the exhaust section cover to which an airtight vinyl opening is attached when replacing the filter element, and a casing airtightly inserted into the exhaust section cover. It is characterized by being composed of a filter element of integral structure.

(Function) In other words, an exhaust duct with a horizontally oriented intake port at the top end is arranged inside the airtight storage box body, and the exhaust duct is connected from the bottom air supply port to the top air intake port inside the airtight storage box main body. The exhaust port is located on the lower side of the airtight storage box body while maintaining an upflow air flow, and the exhaust port is airtightly attached to the outside of the airtight storage box body and integrated with the casing. An exhaust cover that has an insertion port and a discharge port for the filter element in the structure and is connected to the exhaust pipe, and an airtight vinyl opening in the exhaust port of the exhaust cover when replacing the filter element that is integrated with the casing. The filter element, which is integrated with the casing, is airtightly inserted into the exhaust cover, making it difficult to work inside the airtight storage box body while wearing gloves when replacing the filter element. It is possible to replace the filter element directly from the outside of the airtight storage box body while blocking the internal atmosphere and outside air.

Therefore, when replacing the filter element, the work efficiency is significantly improved, the work time is significantly shortened, and it is possible to prevent dust from flowing into the exhaust pump side and from scattering into the airtight storage box body. Furthermore, the work itself can be improved from dangerous high-place work to safe low-place work.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. FIG. 1 is a longitudinal sectional view showing a part of the airtight storage box.

In Fig. 1, the reference numeral 101 indicates the airtight storage box body, 102 the legs for fixing the airtight storage box body 101, and 103 the glove attachment on which the glove (not shown) is installed. Indicates a hole.

An exhaust duct 104 is arranged vertically on the side surface of the airtight storage box main body 101, and a suction port 105 is formed in the upper end of the exhaust duct 104 so as to be oriented horizontally. .

In addition, the lower end of the exhaust duct 104 is connected to the airtight storage box main body 10.
It is hermetically connected to an exhaust port 106 that is airtightly attached to the outside of 1.

An exhaust part cover 107 is airtightly attached to the exhaust port 106.

Furthermore, the exhaust section cover 107 is airtightly connected to the exhaust pipe 108.

Next, the configuration around the exhaust port 106 will be explained in detail with reference to FIG.

FIG. 2 is a longitudinal sectional view showing the configuration around the exhaust port 106.

In Fig. 2, reference numeral 101 is a part of the side surface of the main body of the airtight storage box, and an exhaust port 106 is airtightly attached.
An exhaust duct 104 is airtightly connected to the exhaust port 106.

The exhaust part cover 1 has a filter element 109 integrated with the casing 114 inserted into the exhaust port 106 described above.
07 is attached airtight.

The filter element 109 is mounted on the exhaust part cover 107.
An insertion port 110 for inserting the filter element 109 and a discharge port 111 for discharging the filter element 109 during replacement are provided.
A flange 112 is formed for attaching an airtight vinyl (not shown) when replacing 09.

This flange 112 has two grooves 113 for fixing bands (not shown) used when installing airtight vinyl (not shown).
Books provided.

An exhaust pipe 108 is airtightly attached to the exhaust section cover 107.

The exhaust pipe 108 is connected to an exhaust pump (not shown).

A casing 114 for maintaining airtightness is integrally attached to the filter element 109, and gaskets 115 are attached around the upper and lower surfaces of the casing 114.

The exhaust part cover 107 has a smooth structure on the surface that contacts the gasket 115, and the casing 11
The filter element 109, which is integrally constructed with the filter element 4, is in a movable state.

In other words, the filter element 109 is the casing 11
Gasket 115 attached to 4 and exhaust part cover 1
It is fixed at the contact surface with 07 by the frictional force of both sides,
Furthermore, the internal atmosphere of the airtight storage box main body 101 is isolated from the outside air.

According to the above configuration, by operating the exhaust pump (not shown), the air sucked through the air supply port (not shown) formed at the bottom of the airtight storage box main body 101 is removed from the airtight storage box main body 101. 101, flows into the exhaust duct 104 through the suction port 105 provided at the upper end of the exhaust duct 104, descends within the exhaust duct 104, and enters the exhaust port 106 connected to the lower end of the exhaust duct 104. reach.

The air that has reached the exhaust port 106 passes through a filter element 109 that is integrated with a casing 114 that is inserted into the exhaust section cover 107, and then is sent to the exhaust pump (see Fig. (not shown).

At this time, the air flow within the airtight storage box main body 101 is an upflow flow as in the conventional case.

Next, a method of replacing the filter element 109 which is integrally constructed with the casing 114 will be explained with reference to FIG.

FIG. 3 is an explanatory diagram showing a method of replacing the filter element 109 which is integrally constructed with the casing 114.

In Fig. 3, reference numeral 101 is a part of the side surface of the main body of the airtight storage box, and an exhaust port 106 is airtightly attached.
An exhaust duct 104 is airtightly connected to the exhaust port 106.

Further, an exhaust part cover 107 in which a filter element 109 integrally constructed with the casing 114 is inserted is airtightly attached to the exhaust port 106.
An exhaust pipe 108 is airtightly connected to 07.

Filter element 10 integrated with casing 114
9, first replace the exhaust port 1 of the exhaust section cover 107.
An airtight vinyl 117 is attached to a flange 112 provided on flange 11 using a fixing band 116.6 Fixing band 116 is fitted into a groove 113 provided on flange 112 and fixed.

As mentioned above, the filter element 109 which is integrally constructed with the casing 114 includes the gasket 115 and the exhaust section cover 1.
It is movable because it is fixed at the contact surface with 07 by the frictional force of both.

Therefore, by inserting a filter element integrated with a new replacement casing through the insertion port 110 provided on the opposite side of the exhaust port 111 of the exhaust section cover 107, the filter element 109 integrated with the existing casing 114 is inserted into the exhaust port 110. Airtight vinyl 1 extruded from 111
It is discharged into 17.

Moreover, the filter element 10 that is integrated with the existing casing 114 is also used for a new replacement filter element.
9, the casing and gasket are installed integrally with the filter element, so that the internal atmosphere of the airtight storage box body 101 and the outside air remain shut off even during the replacement work.

After replacement, the filter element 109 integrally constructed with the existing casing 114 can be disposed of together with the airtight vinyl 117 by separating the airtight vinyl 117 from the flange 112 by fusion cutting or the like while maintaining the airtightness.

Airtight vinyl 11 left on flange 112 after separation
7 and the fixing band 116 can be replaced with a new airtight vinyl at the next time of replacement by fixing them in the second groove 113 provided in the flange 112 with a new fixing band, so that the filter element is integrated with the casing. discarded at the same time.

By always moving the fixing band and part of the airtight vinyl left by the above replacement work to the first groove 113 provided in the flange 112 after the work is completed, the work can be repeated.

From the above explanation, in the airtight storage box of the present invention, the filter element 109 integrated with the casing 114 can be replaced from the outside of the airtight storage box main body 101 through the insertion port 110 and the discharge port 111 provided in the exhaust section cover 107. Since it can be performed directly, it is possible to avoid the difficult work inside the airtight storage box body using the gloves (not shown), and the work efficiency is significantly improved.

【Effect of the invention〕

The airtight storage box according to the present invention allows the filter element, which is integrally structured with the casing, to be replaced from the outside while blocking the internal atmosphere of the airtight storage box from outside air, making it difficult to work inside the airtight storage box while wearing gloves. This greatly improves work efficiency as it avoids this.

In addition, the exhaust part is installed on the outer bottom side of the airtight storage box while maintaining the air flow inside the airtight storage box at the conventional rear tube flow, allowing replacement work to be carried out at a safe low place rather than at dangerous heights. Improved to work.

In addition, unnecessary dust can be effectively prevented from flowing into the exhaust pump side, which can shorten the working time.

In addition, since the filter element, which is integrated with the casing, can be replaced using a cartridge system at the bottom of the airtight storage box, it is completely possible to prevent dust collected on the filter element from scattering into the airtight storage box when replacing the filter element. It can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the airtight storage box of the present invention, FIG. 2 is a vertical cross-sectional view showing the detailed configuration around the exhaust port of the airtight storage box of the present invention, and FIG. 3 is a vertical cross-sectional view showing an embodiment of the airtight storage box of the present invention. Fig. 4 is a vertical cross-sectional view showing a conventional air-tight storage box, and Fig. 5 is a vertical cross-section showing the configuration of the exhaust section of a conventional air-tight storage box. Show the diagram. 3...Air supply part 101...Airtight storage box body 106...Exhaust port 105...Suction port 1
04...Exhaust duct 114...Casing 1
09... Filter element 110... Insertion port 111... Outlet port 10
8...Exhaust pipe 107...Exhaust section cover 1
12... Flange agent Patent attorney Nori Ken Chika Yudo Ken Daishimaru Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) A storage box main body having an air supply section at the bottom, an exhaust port airtightly provided on the outer lower side of the storage box main body, and an airtight air outlet that is airtightly attached to the air exhaust port to allow air to flow upward inside the storage box main body. An exhaust duct is extended and has a horizontally oriented suction port at its upper end, and a filter element that is airtightly attached to the outside of the storage box body and is integrated with the casing is inserted into the exhaust port. An exhaust part cover that has an insertion port and an outlet for the filter element in the opposite direction and is connected to the exhaust pipe, and an airtight vinyl opening provided on the exhaust port side of the exhaust part cover when replacing the filter element. An airtight storage box characterized by consisting of a flange to which the exhaust section is attached, a casing that is airtightly inserted into the exhaust section cover, and a filter element that is integrally constructed.