JP2566994Y2 - Automatic water supply - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic water supply device for an animal breeding room with an improved breeding environment in an air conditioning ventilation system for a laboratory animal breeding room used for, for example, a safety test.

[0002]

2. Description of the Related Art FIGS. 3A and 3B are a sectional view and a front view of a conventional animal breeding room. In the drawings, arrows indicate the flow of air. A rack 22 including a plurality of shelves is provided in the laboratory animal breeding room 21. In the rack 22, an exhaust chamber 23 also serves as a back plate, and an exhaust duct 24 is connected to the exhaust chamber 23. The exhaust chamber-2
3 is provided with a suction port on a part of the rack 22 on the shelf side. In the rack 22, the air supply duct 26 also serves as a shelf,
An air outlet is provided on a part of the lower surface of the air supply duct 26. Each air supply duct 26 is connected to an air supply duct 262 via an air supply chamber-261. Each rack of the rack 22 is provided with a cage 28 containing experimental animals.

This cage 28 is, as shown in FIG.
An upper surface of the cage main body 281 is provided with an opening, and a wire mesh 35 is attached to an opening of the upper surface of the cage main body 281.
The wire mesh 35 is provided with a recess 351, and the recess 35
A bait 36 is placed on 1. The cage body 281
Is covered with a sealing cover -282 with a wire mesh 35 interposed therebetween.
Is provided. The air supply port 29 is provided with a filter 30. The air supply port 29 is provided with the cage 28 in the rack 22.
When installed in the air outlet 27 of the air supply duct 26
It is provided so that it may be connected to. In addition, the closed cover
An exhaust port 31 is provided at 282 on the exhaust chamber 23 side, and a filter 32 is provided at the exhaust port 31. When the cage 28 is installed in the rack 22, the exhaust port 31 is installed at an interval near the suction port 25 of the exhaust chamber 23, and is shifted so as not to face the suction port 25. And install it.

[0004] An indoor air-conditioning outlet 33 is provided on the ceiling of the experimental animal breeding room 21 and an air inlet 3 is provided.
4 are provided.

[0005] Separately, the conditioned air of the cage 28 is sent from the air supply duct 26. As for the conditioned air, the air passing through the cage 28 is exhausted through the exhaust chamber 23.

The ventilation in the cage 28 will be described as follows.

As shown in FIG. 3, an air supply port 29 with a filter 30 and an exhaust port 31 with a filter 32 are installed in a closed cage 28, and the air supply port 29 of the cage 28 is an air supply which also serves as a shelf plate. It is connected to the position of the outlet 27 of the duct 26 and installed. The exhaust port 31 of the cage 28 is installed at an interval in the vicinity of the suction port 25 provided on the back of the rack 22, and is installed at a position shifted so as not to face the suction port 25.

An air supply duct 2 is connected to an air supply port 29 of the cage 28.
The clean air blown out from the air outlet 27 of the air blower 6 is pushed in, and only the amount of air that maintains the inside of the cage 28 at a positive pressure is exhausted from the outlet 31 of the cage 28. Therefore, since the inside of the cage 28 is clean and has a positive pressure, there is no contamination from the outside of the cage 28.

In this embodiment, since the inside of the cage 28 is maintained at a positive pressure, the possibility of external contamination can be eliminated.

As described above, the air-tight cage provided with the air supply / exhaust port is provided with the air outlet through which the clean air is provided on the lower surface of the shelf plate having the air supply duct structure, and the suction port provided on the shelf side. A clean barrier can be constructed in cage units by installing the rack in a rack provided with an exhaust chamber that also serves as a back plate.

In order to construct a barrier in cage units and to enable air conditioning in the cage, a filter air supply port is provided at the top of the cage sealed with a cover, and a filter is provided at the rear side surface of the cage. An exhaust port is provided, and the position of the air supply port of the cage is connected to the lower part of the air outlet on the lower surface of the air supply duct and shelf, so that clean air flowing out of the air outlet passes through the air inlet of the cage. By being pushed in, the inside of the cage can be properly ventilated.

[0012] In such a conventional cage barrier apparatus for a laboratory animal breeding room, the cage and the cage are arranged so that air outside the cage does not easily enter the cage in order to maintain the barrier even when the cage is removed from the rack. The opening provided in the hermetic cover must be closed or provided with a filter.

Thus, as shown in FIG.
A cage opening 41 is provided on a side wall of the cage body 281. The automatic water supply nozzle 4 is provided near the cage opening 41.
An automatic water supply pipe 43 is provided so that the second water supply pipe 2 is located. When the experimental animal in the cage 28 comes into contact with the automatic water supply nozzle 42 from the cage opening 41, the water is leached from the automatic water supply nozzle 42 and the water can be drunk.

[0014]

However, there has been a drawback that air outside the cage enters the cage from the cage opening where the automatic water supply nozzle is arranged, which hinders maintenance of the cage barrier.

Therefore, the present invention has been made in view of the above circumstances, and a cage opening in which an automatic water supply nozzle is disposed so that air outside the cage does not enter the cage through a cage opening in which the automatic water supply nozzle is disposed. By covering the part,
An object of the present invention is to provide an automatic water supply device capable of maintaining a cage barrier.

[0016]

To achieve the above object, an automatic water supply device according to the present invention comprises a cage body covered with a sealing cover, a cage opening provided on a side wall of the cage body, and A lid member provided to surround the cage opening and having a vertical wall inclined, a nozzle entrance opening provided on the vertical inclined wall of the lid member and provided with an automatic water supply nozzle, and An opening / closing plate provided so as to close the nozzle entry / exit opening from the inside by gravity. The air outside the cage does not enter the cage from the cage opening where the automatic water supply nozzle is arranged. As described above, the cage barrier is maintained by covering the cage opening where the automatic water supply nozzle is arranged.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing an example of a cover member of FIG. That is, the cage body 281 of the cage 28 is provided with an open upper surface, and a sealing cover-282 is provided on the upper surface of the cage body 281 so as to be detachable so as to cover the opening. A cage opening 51 is provided on a side wall of the cage body 281, and a box-shaped lid member 52 is provided so as to surround the cage opening 51. The lid member 52 has a cage body 281 as the vertical wall faces down.
Is provided so as to be closer to. A nozzle entrance opening 53 is provided in the vertical inclined wall of the lid member 52. The nozzle entrance opening 53 has an automatic water supply nozzle 5.
4 is provided by an automatic water supply pipe 55 so that it can freely enter and exit. An opening / closing plate 56 is attached to the inside of the vertically inclined wall of the lid member 52 so that the upper part thereof is rotatable so as to close the nozzle entrance opening 53. The lid member 52 is configured as shown in FIG. That is, the cage body 281
A receiving member such as a receiving fitting 5 having grooves on both sides
7 are provided, and the protrusions 58 to be inserted into the grooves of the receiving members 57 are provided on both sides of the cover member 52, and the protrusions 58 of the cover members 52 are inserted into the grooves of the receiving members 57, whereby the cover member 52 can be removably attached to the cage 28. Note that a stopper 59 is provided below the receiving fitting 57. A gripping member, for example, two gripping members 41 is provided on the front inner wall of the sealing cover-282.
A hanging member, for example, a hanging member 42 is provided on a rear inner wall of the sealing cover 282. A mesh member, for example, a rear portion of a wire mesh 43 is hung on the hook fitting 42, and a front portion of the wire mesh 43 is gripped by the gripping tool 41 so that the front portion of the wire mesh 43 can escape therefrom. 28
2 is provided. The wire net 43 is provided with a concave portion 431 formed by bending the wire net, and the bait 44 is placed on the concave portion 431. The cage body 281 is formed by covering a hermetic cover-282 with a wire mesh 43 interposed therebetween. An air supply port 29 is provided on an upper surface of the hermetic cover-282. The air supply port 29 is provided with a filter 30. The air supply port 29 is provided so as to be connected to the air outlet of the air supply duct when the cage 28 is installed in a rack provided in the animal breeding room. In addition, the closed cover
An exhaust port 31 is provided at 282 on the exhaust chamber side, and a filter 32 'is provided inside the closed cover-282 so as to cover the exhaust port 31. The exhaust port 3
1 is such that when the cage 28 is installed in the rack, the cage 28 is installed at an interval in the vicinity of the suction port of the exhaust chamber, and is displaced so as not to face the suction port.

In the automatic water supply system, the opening 5 through which the animals in the cage 28 can easily contact the automatic water supply nozzle 54 is provided.
1 is provided. A lid member 52 is provided at the opening 51 of the cage 28.
An opening / closing plate 56 that is pushed and opened by the automatic water supply nozzle 54 when the jig 28 is installed in a rack is provided. This opening / closing plate 56
Is closed by its own weight, but a portion where the opening / closing plate 56 contacts is inclined so as to maintain the closed state even when the cage 28 is inclined, such as when the cage 28 is taken in and out. With this structure, when the cage 28 is installed on the rack, the opening / closing plate 56 is released so that the animal comes to a position where it comes into contact with the automatic water supply nozzle 54, and when the cage 28 is removed from the rack, the opening / closing plate is opened. 56 is closed by its own weight so that contaminated air from outside the cage 28 does not easily enter the cage 28. The position of the automatic water supply nozzle 54 when entering the lid member 52 is adjusted so that the tip of the automatic water supply nozzle 54 does not enter the inside of the cage 28, and water leakage occurs due to the failure of the automatic water supply nozzle 54. In this case, the leakage is discharged from the gap between the lid member 52 and the cage 28 to prevent the accident that the cage 28 becomes full and the animal drowns.

As shown in FIG. 2, the lid member 52 is attached to the cage 28 by being slid from above onto a receiving bracket 57 attached to the cage 28 side, and can be easily attached and detached. The protrusion 57 has a small protrusion, and the cage 28 can be stacked by removing the cover member 52.

[0021]

As described above, according to the present invention, the cage opening for disposing the automatic water supply nozzle is covered so that the air outside the cage does not enter the cage from the cage opening for disposing the automatic water supply nozzle. Thereby, the cage barrier can be maintained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a lid member of FIG.

FIG. 3 is a configuration diagram showing a conventional laboratory animal breeding room.

FIG. 4 is a configuration diagram showing a cage unit of FIG. 3;

FIG. 5 is a configuration explanatory view showing a conventional automatic water supply nozzle.

[Explanation of symbols]

21 ... animal breeding room, 22 ... rack, 23 ... exhaust chamber, 24 ... exhaust duct, 25 ... intake port, 26, ... air supply duct, 27 ... outlet, 28 ... cage, 29 ... air supply port, 3
0, 32 '... filter, 31 ... exhaust port, 41 ... grasp fitting, 42 ... hook fitting, 43 ... wire mesh, 281 ... cage body, 282 ... closed cover, 51 ... cage opening, 52 ...
Lid member, 53 ... Nozzle in / out opening, 54 ... Automatic water supply nozzle, 55 ... Automatic water supply pipe, 56 ... Opening / closing plate, 57 ... Receiving bracket, 58 ... Projection, 59 ... Stopper.

Continuation of the front page (56) References Jigyo Sho 55-42685 (JP, Y2) Jigyo Sho 58-4733 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] A cage body covered with a sealing cover, a cage opening provided on a side wall of the cage body, a lid member provided so as to surround the cage opening and having a vertical wall inclined, A nozzle access opening provided on the vertically inclined wall of the lid member and provided with an automatic water supply nozzle so as to be able to enter and exit, and an opening / closing plate provided so as to close the nozzle access opening from the inside by gravity. Automatic water supply device characterized by doing.