JPH0123468Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a sterilizing gas suitable for disinfecting large animal facilities such as experimental animal feeding rooms, cow sheds, and hospital rooms of dog and cat hospitals. Regarding the generator.

[Prior Art] Formalin fumigation is effective for disinfecting laboratory animal feeding rooms. In this method, 20 ml of formalin and 20 ml of water are placed in a container per 1 m ³ of the space to be fumigated, and 20 g of potassium permanganate is poured into the container to generate formaldehyde gas in a short period of time for disinfection.

Sterilization using formalin gas has a very high bactericidal effect and is effective, but on the other hand, it is extremely harmful to the human body, and if the concentration exceeds a certain level, it is explosive and dangerous.

For this reason, a person must enter the feed nursery room, add potassium permanganate, and then escape outside within a few seconds until the gas is generated, making the work dangerous. Therefore, an electric type called an electric sterilizing gas generator is known that heats and evaporates formalin or paraformaldehyde, but formalin gas is highly chemically reactive and can easily damage electrical outlets, etc.
It is not desirable to use electricity as a power source because it has problems with durability, requires careful cleaning (washing with water) every time the device is used, and has the problem of electrical leakage.

[Problems to be solved by the invention] The present invention was made to solve the above-mentioned conventional problems. To provide a unique sterilizing gas generating device which generates sterilizing gas after a lapse of time and uses electric power to operate the device. A further object of the present invention is to provide a sterilizing gas generating device in which the time from when the device is set until the sterilizing gas is generated can be adjusted as desired. A further object of the present invention is to provide a sterilizing gas generating device that is not immersed in chemicals such as formalin gas and has excellent durability. A further object of the present invention is to provide a sterilizing gas generator that does not require a power source such as electricity and is not restricted by the location where it can be used.

[Means for Solving the Problems] In order to solve the above problems, the present invention has a first container containing a first medicine and a second container containing a second medicine. The second container has a weight that rotates the second container so that the second medicine contained in the container is put into the first container containing the first medicine, and a weight that delays the rotation speed of the second container. A sterilizing gas generator is provided, the first chemical being an aqueous formaldehyde solution, and the second chemical being potassium permanganate.

When implementing the present invention, it is preferable to use a damper cylinder as the damper. The damper cylinder may have an upper end and a lower end communicating with each other through a passage, and a valve may be provided in the passage. In this type, the rotational speed of the second container is adjusted by adjusting the opening degree of the valve, so that after the device is activated, the second drug in the second container becomes the first drug. It is possible to adjust the time until the first container containing the liquid starts being charged. Further, the damper cylinder may be a cylinder in which a small diameter passage is formed. In this case, the rotational speed of the second container is adjusted by changing the weight. Furthermore, the damper cylinder may have a small diameter passage formed in the piston, and the middle part and the lower end of the cylinder may be communicated through the passage. In this type of case, the second container is initially rotated relatively slowly and then rotated at a relatively high speed from the desired position.

[Operation of the device] A first chemical (formaldehyde aqueous solution) is poured into a first container, and a second chemical (potassium permanganate) is poured into a second container at a predetermined ratio, and the device is placed in the area to be disinfected. Then, when the stopper etc. that supports the descent of the weight is removed, the second container is rotated by the weight and the second drug in the container is poured into the first container containing the first drug. In this case, the rotational speed of the second container, and thus the rate at which the second drug in the second container is introduced into the first container containing the first drug after the device is activated, is controlled. The time to start is delayed by the number of damper cylinders or weights, so that during this time the operator can evacuate the room to be disinfected.The second chemical is added to the first chemical. If so, it will generate sterilizing gas and disinfect the room.After a predetermined period of time, the air conditioner will be activated to ventilate the room.

[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2, a first container 3 containing a first chemical, for example, a 2-fold diluted formalin solution (formaldehyde aqueous solution) is provided on a trolley 2 equipped with wheels 1. Further, a hollow support 7 is erected on the trolley 2, and a first
A second container 5 is supported which is located above the container 3 and contains a second chemical, for example potassium permanganate. The container 5 is rotated so as to introduce the second medicine contained in the container 5 into the first container 3 containing the first medicine, and is provided with means for retarding the speed of rotation.

To explain this means, a damper cylinder 10 that acts as a damper is rotatably supported on the support column 7 by a support member 9, and a weight 1 is attached to the tip of a rod 12 of the damper cylinder 10.
5 is removably attached. By preparing several types of weights and selecting a plurality of them as appropriate, the rotation operation time can be controlled. Further, one end of a lever 16 is pivotally attached to the tip of the rod 12, and the other end of the lever 16 is fixed to a first shaft 17 which is pivotally supported by the hollow support 7. The first shaft 17 has a third
As shown in the figure, a large-diameter first gear 18 provided in the hollow support 7 is fixed, and this first gear 18 is connected to a small-diameter second gear 19 provided in the hollow support 7. The second gear 19 is fixed to a second shaft 20 supported by the hollow support 7. The second shaft 20 is connected to a shaft 6 which is integral with the second container 5 as shown in FIG.
are connected by In addition, in FIGS. 2 and 3, 4 and 8 are handles for moving the device, and 21 is a stopper that supports the rod 12 of the damper cylinder 10 in an extended state.

FIGS. 4 and 5 show a hood 23 that covers the second container 5. The hood 23 has a notch 23a into which the shaft 20 is inserted. Supported by

FIGS. 6 to 8 show various examples of damper cylinders that serve as dampers. In the example shown in FIG. is provided. By adjusting the opening degree of the valve 14, the lowering speed of the piston 11, and therefore the rotational speed of the second container 5, can be adjusted.

In the example shown in FIG. 7, the piston 11 has a small diameter passage 11a.
is provided.

In the example shown in FIG. 8, the piston 11 has a small diameter passage 11a.
In addition, the side wall intermediate portion 10c and the side wall lower end portion 10d of the cylinder 10 are communicated through a passage 13, and the piston 11 has a low descending speed until it reaches the side wall intermediate portion 10c, and the side wall intermediate portion 10
After passing through c, the descending speed increases. The second container 5 therefore initially rotates slowly and then rapidly.

In the examples shown in FIGS. 7 and 8, the rotational speed of the second container 5 is adjusted by changing the weight 15 as appropriate.

Note that by using water-resistant (corrosion-resistant) materials for the main parts of the device, such as the container, cylinder, arm, and shaft, the device can be made highly durable.

To sterilize, for example, a laboratory animal feeding room by formalin fumigation using the sterilizing gas generator configured as described above, the device is moved to an appropriate location in the feeding room to be disinfected using a wheeled cart 2, and the same is placed in the second container 5. Add 20g of potassium permanganate per volume. first container 3
Formalin 20ml and water per 1 ^m3 of space to be fumigated.
Pour in 20ml and place it on trolley 2. When the stopper 21 is removed, the piston rod 12 is lowered by the weight 15, and its movement is controlled by the lever 16, the first shaft 17, the first gear 18, the second gear 19,
the second shaft 20, the second shaft 6 via the second container side shaft 6;
Rotate the container 5. At this time, the descending speed of the piston rod 12 is delayed by the damper cylinder 10 acting as a damper, and the second container 5
The rotation speed of is retarded. During this time, the worker leaves the feed nursery and evacuates.

When the second container 5 rotates, potassium permanganate is introduced into the first container 3 containing a 2-fold diluted formalin solution, and formaldenide gas is generated to disinfect the feed nursery.

After the specified time has passed, the air conditioner will be activated.
Ventilate. After ventilation is completed, the operator enters the feed nursery room, takes the equipment out of the feed nursery room, and cleans the equipment.

[Effects of the invention] According to the invention, the following excellent effects can be obtained.

(i) After the worker enters the feed nursery room etc. to be disinfected and sets up the equipment, sterilizing gas will be generated after a predetermined period of time has elapsed, so the worker should leave the room to be disinfected well in advance. The safety of the work can be ensured.

(ii) Electric power is not used to delay the generation of sterilizing gas, so there is no inconvenience of damage to outlets etc. due to generated gas such as formalin gas, and durability can be improved.

(iii) The device requires careful cleaning (washing with water) after each use, but since it does not use electricity, there is no problem with electrical leakage.

(iv) It does not require a power source such as electricity and is not restricted by the location of use.

(v) The sterilizing gas generation delay time can be easily adjusted by changing the weight or by using a damper cylinder as a damper and changing the opening degree of the valve that adjusts the return of oil.

(vi) It has a simple structure with only a weight and a damper attached, is robust, can be used stably over a long period of time, and can be provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing a part of the sterilizing gas generator according to the embodiment of the present invention, Fig. 2 is a front view of Fig. 1 seen from the right, and Fig. 3 is a cross-sectional view of the hollow support. FIG. 4 is a cross-sectional view showing the relationship between the second container and the hood, FIG. 5 is a front view of the hood, and FIGS. 6, 7, and 8 are a plan view of FIG. FIG. 3 is a vertical cross-sectional view showing various examples of damper cylinders. 2... Cart, 3... First container, 5... Second container, 10... Damper cylinder, 13... Passage, 14... Valve, 15... Weight, 23... Hood.

Claims (1)

[Scope of utility model registration request] In a sterilizing gas generator that generates sterilizing gas by adding a second chemical to a first chemical, the device includes a first container containing the first chemical and a second container containing the second chemical. The second container has a weight and a second container for rotating the second container so that the second medicine contained in the container is put into the first container containing the first medicine. A sterilizing gas generator comprising a damper that delays the rotation speed of the container, the first chemical being an aqueous formaldehyde solution, and the second chemical being potassium permanganate.