CN201057739Y

CN201057739Y - Relative closed breeding device

Info

Publication number: CN201057739Y
Application number: CNU200720023288XU
Authority: CN
Inventors: 姜宇; 王洪山; 姜昊; 刘国明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-21
Filing date: 2007-06-21
Publication date: 2008-05-14
Anticipated expiration: 2017-06-21

Abstract

Disclosed is a relatively sealed feeding device, belonging to the tool used in animal scientific experiments. The utility model mainly aims at solving the problems existing in the present open animal feeding frame. The utility model comprises a feeding frame, an air supply apparatus, an air returning opening and an air outlet. The utility model is characterized in that the top, the left side, the right side and the back side of the feeding frame are respectively provided with a top panel, a left side panel, a right side panel and a back side panel; panels of an operation plane arranged on the face are connected to the feeding frame in the shape of two doors by means of a hinge; the panels of the operation plane and the back side panel are provided with a plurality of small holes; the panels of the operation plane face the clean operation zone; and the back side panel is communicated with independent polluted zones in space. The utility model can seal the animals relatively to make the organized form of the airflow in the feeding rooms tend reasonably, thereby eliminating the unfavorable effects to the environment, and the utility model reduces the operation expenses. And the utility model is used in the research of animal experiments.

Description

The relative close type raising device

Technical field

The utility model relates to the raising frame that uses in a kind of laboratory animal science, specifically is a kind of relative close type raising device.

Background technology

The laboratory animal science is the basis of whole life science, and people more and more pay attention to the research of laboratory animal and use, and along with China's rapid economic development, a lot of pharmaceutical manufacturers and R﹠D institution all need to build standard compliant Laboratory Animal Facility.According to national standard " laboratory animal environment and facility " (GB14925-2001), the environmental condition of laboratory animal is divided into: conventional environment, barrier environment, isolation environment.

In design work, we notice in conventional environment and barrier environment, adopt open raising (see figure 1) usually, the open animal feeding rack of indoor placement, and operating personnel carry out various operations in feeding environment.Because laboratory animal, air-conditioning system adopts air to be sent into indoorly by the top, room through filtering usually, and diffusion mixes, dilution chamber's internal contamination air, and all exhaust outlet, interlayer pipeline, the filter bank by the bottom, room drains into outdoor then.

The shortcoming that exists during open raising frame uses:

1. personnel operation and animal feeding cause the cross-infection of people and animal, animal and animal easily in a space.

2. animal lives in the raising box on the cage, and the pure air in the room seldom can enter the raising box, forms the air-flow dead angle, and design parameters such as the temp. and humidity of the subenvironment of animal feeding, air velocity can not be controlled.

3., air fully mixes the back and gets rid of between stink that animal produces and ammonia and raising, malleation to external world mutually between raising, and the long-time running foul smell is excessive, influences surrounding environment.

4. the air between raising all drains into outdoor, replenishes new wind in a large number, turns on the aircondition as opening window, causes Animal House facility one-time investment height, the operating cost height.

The utility model content

In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model provides a kind of relative close type raising device, makes the animal relative closure, and the air current composition form between raising is tending towards rationally, eliminates the adverse effect to environment, reduces operating cost.

The technical solution of the utility model is: this relative close type raising device, comprise raise frame, air-supply arrangement and return, exhaust outlet, it is characterized in that end face, left surface, right flank, the trailing flank of raising frame are respectively equipped with top panel, Left-Hand Panel, right panel, rear side panel; The operating surface panel that is positioned at the front is two fan door shapes and is connected on the raising frame by hinge; On operating surface panel and rear side panel, be equipped with a plurality of apertures; The operating surface panel is in the face of clean operating space, and the rear side panel independently communicates the contaminated area with the space.

Each panel all adopts lucite.Also available other hard transparent materials.

Described exhaust outlet is arranged on the upper end of contaminated area.

The beneficial effects of the utility model are:

1. personnel are in clean operating space, and animal is raised in the frame at relative closure, reduced the cross-infection chance of people and animal, animal and animal.

2. the air current composition form between raising is tending towards rationally, and the rate of ventilation and the air velocity of animal cage are effectively controlled, and subenvironment is effectively improved.

Relative close type raise frame raise relatively between negative pressure, the smell that animal produced is got rid of through negative-pressure pipeline, has avoided in the current programme foul smell excessive, eliminates the adverse effect to environment.

4. air 50% return air between raising recycles, and has reduced the resh air requirement of air-conditioning system, has reduced the one-time investment and the operating cost of Animal House facility.The author was an example with the barrier environment letting animals feed once, and as calculated, initial cost can reduce 8%, and annual operating cost reduces by 16.5%.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described,

Fig. 1 has open raising schematic diagram now

Fig. 2 is that relative closure of the present utility model is raised the shelf structure schematic diagram;

Fig. 3 flow diagram for the single aperture of relative closure raising frame of the present utility model amplifies;

Fig. 4 is that relative closure of the present utility model is raised schematic diagram.

Among the figure: 1 air-supply arrangement, 3 clean operating spaces, 4 return air inlets, 5 contaminated areas, 6 relative closures are raised frame, 7 exhaust outlets, 62 top panels, 63 side panels, 64 operating surface panels, 65 handles, 66 hinges, 67 pressure difference meters, 68 apertures, 69 air-flows.

Embodiment

According to standard GB14925-2001 regulation, if can remove dust granules thing and the toxic and harmful that laboratory animal produces, can utilize return air, but circulating air should be taken from pollution-free zone or same unit, new wind must not be less than 50%.According to afore mentioned rules, we propose relative close type and raise (see figure 4).Animal feeding rack changes relative close type into and raises frame, with the subenvironment sealing of animal survival, and the control airflow direction, the harmful substance that animal is produced is not polluted room air, can utilize return air.

As shown in Figure 2.The utility model comprises the raising frame of stratiform or other shape, and end face, left surface, right flank, the trailing flank of raising frame are respectively equipped with top panel 62, left and right side panel 63, rear side panel; Be positioned at positive operating surface panel 64 and be two fan door shapes and be connected relative closure by hinge 66 and raise on the frame 6,64 liang of fan doors of operating surface panel are provided with handle 65; Be equipped with a plurality of apertures 68 and see Fig. 3 on operating surface panel and rear side panel, operating surface panel 64 is provided with aperture 68 in the situation by air-flow 69.Each panel all adopts lucite.

Raise frame, with the poly (methyl methacrylate) plate veneer, operating surface panel 64 can be opened, and carries out various manual operations, and opening diameter on operating surface panel and the rear side panel is the 1cm small sircle hole.Open the 1cm small sircle hole on the lucite panel, air flows through the thin walled aperture place, (see figure 3),

Single perforate ozzle goes out flowmeter to be calculated,

Q＝uA[2(P ₁-P ₂)/ρ] ^1/2

U--------vertical water outflowing jet coefficient gets 0.82

0.785 square centimeter of A-------1 centimetre of aperture area

P ₁-P ₂---------aperture both sides pressure reduction is got 5Pa

----------atmospheric density is got 1.2kg/m to ρ ³

Q＝0.82*0.785*10 ^-4*(2*5/1.2) ^1/2

＝1.87*10 ^-4m ³/s

Relative close type is raised the interior rate of ventilation of frame and is calculated by 30 times/hour

1.7*1.6*0.41*30=33.5m ³/ hour

Number of aperture on the panel: 33.5/1.87*10 ^-4* 3600=50

Panel cut out rate: 0.785*10 ^-4* 50/1.7*1.6=0.14%

By top calculating as can be known:

1. raise at relative close type and evenly open each 50 of 1cm small sircle holes on frame operating surface panel and the rear board, establish pressure difference meter 67 on the side panel, keep 5Pa pressure reduction between enclosed breeding frame and the clean operating space.

2. under 5Pa pressure, the aperture air-flow velocity can not directly blow thing near 3m/s.

3. between raising the operating space raise frame pressure reduction with relative closure should not be excessive, otherwise noise such as whistle may appear.This can solve by being provided with pressure difference meter 67 on right panel 63 tops.

As Fig. 4 is the application of relative close type raising device.

Use relative close type to raise the air-conditioning scheme air current composition explanation of frame:

(1). air filters through air-supply arrangement 1, enter clean operating space 3, room, enter relative close type again and raise frame 6, discharge through the exhaust outlet 7 of its upper end the contaminated area 5 that enters the back at last, promptly control incoming flow and go out flow path direction, avoid pollution clean operating space, room.Therefore operating surface panel 64 is in the face of clean operating space 3, and the rear side panel communicates with contaminated area 5.

(2). the contaminated area is through exhaust outlet 7 air drafts between raising, and clean operating space is through return air inlet 4 and return air, and both are respectively 50% of room air output at shared ratio.

Claims

1. relative close type raising device, comprise raise frame, air-supply arrangement and return, exhaust outlet, it is characterized in that end face, left surface, right flank, the trailing flank of raising frame are respectively equipped with top panel, Left-Hand Panel, right panel, rear side panel; The operating surface panel that is positioned at the front is two fan door shapes and is connected on the raising frame by hinge; On operating surface panel and rear side panel, be equipped with a plurality of apertures; The operating surface panel is in the face of clean operating space, and the rear side panel independently communicates the contaminated area with the space.

2. relative close type raising device according to claim 1 is characterized in that each panel all adopts lucite.

3. relative close type raising device according to claim 1 is characterized in that described exhaust outlet is arranged on the upper end of contaminated area.