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CN-224219137-U - Cage changing table

CN224219137UCN 224219137 UCN224219137 UCN 224219137UCN-224219137-U

Abstract

The cage changing table comprises an air supply cover body, a main body, an air pipe, a fan, a flow equalizing film and a filtering piece, wherein the air supply cover body is provided with a mounting hole, the main body is arranged below the air supply cover body, the top surface of the main body is provided with a cage placing area, the cage placing area is provided with an air return hole, the mounting hole is opposite to the air return hole, the air pipe is arranged between the air supply cover body and the main body and is connected with the air supply cover body and the main body, the air supply cover body, the air pipe and the main body form an air supply channel, and the fan, the flow equalizing film and the filtering piece are all arranged in the air supply channel. Disordered airflow in the air supply duct forms laminar airflow after passing through the flow equalizing film, the laminar airflow is blown out through the mounting hole and flows downwards from top to bottom between the mounting hole and the cage placement area, and then returns to the air passage through the air return hole under the negative pressure suction of the air return hole.

Inventors

  • CHANG ZAI
  • TANG QIANQIAN

Assignees

  • 清华大学

Dates

Publication Date
20260512
Application Date
20250528

Claims (10)

  1. 1. A cage changing station, comprising: The air supply cover body is provided with a mounting hole; The main body is positioned below the air supply cover body, the top surface of the main body is provided with a cage placement area, the cage placement area is provided with an air return hole, and the mounting hole is opposite to the air return hole; The air pipe is positioned between the air supply cover body and the main body and is connected with the air supply cover body and the main body, the air supply cover body, the air pipe and the main body form an air supply channel, the inlet of the air supply channel is the return air hole, and the outlet of the air supply channel is the mounting hole; the fan, the flow equalizing film and the filtering piece are all arranged in the air supply duct.
  2. 2. The cage changing station of claim 1 wherein the flow equalizing membrane is disposed at the mounting hole, and the fan and the filter are disposed within the main body.
  3. 3. The cage changing table of claim 2 wherein the filter comprises a primary filter and a secondary filter, wherein the interior of the main body has a first sub-duct and a second sub-duct, the second sub-duct is located at the upper rear side of the first sub-duct and is in communication with the duct, the secondary filter is located in the second sub-duct, the first sub-duct is in communication with the return air hole, the primary filter is located in the first sub-duct and is opposite to the return air hole, the blower is in communication with the first sub-duct and the second sub-duct, and the supply air duct comprises the first sub-duct and the second sub-duct.
  4. 4. A cage changing table according to any one of claims 1 to 3, wherein the return air holes are a plurality of first through holes arranged in a matrix, the plurality of first through holes are distributed over the cage placing area, the aperture of each first through hole is 4 mm-8 mm, the hole spacing between adjacent first through holes is 10 mm-20 mm, the size of the cage placing area in the left-right direction is 710 mm-770 mm, and the size of the cage placing area in the front-rear direction is 530 mm-560 mm.
  5. 5. A cage changing table according to any one of claims 1 to 3, wherein the top surface of the main body is further provided with a mounting area, the mounting area is positioned at the rear side of the cage placing area, the lower end of the air pipe is fixedly arranged in the mounting area, and the upper end of the air pipe is fixedly connected with the rear part of the air supply cover body; The front side of the air pipe is provided with a man-machine interaction module and a storage piece, the storage piece is located below the man-machine interaction module, the air supply cover body is provided with a light source module and a camera module, a control module and a power module are arranged in the main body, and the man-machine interaction module, the light source module, the camera module and the power module are electrically connected with the control module.
  6. 6. A cage changing station according to any one of claims 1 to 3, wherein the front lower portion of the main body is provided with a rearwardly recessed leg receiving area, and the bottom surface of the blower cover is a slope extending obliquely upwardly from rear to front.
  7. 7. The exchange stand according to claim 6, wherein a front end of the air supply cover is located at a rear side of a front end of the cage placement area, a distance between the front end of the air supply cover and the front end of the cage placement area in a front-rear direction is 360mm to 420mm, a distance between a top surface of the air supply cover and the cage placement area in a vertical direction is 630mm to 630mm, and a distance between a bottom surface of the air supply cover and the cage placement area in the vertical direction is 630mm to 630mm.
  8. 8. A cage changing station according to any one of claims 1 to 3, wherein the left and right ends of the cage placing area are provided with handles that can be pushed and pulled up and down, each of the handles being arranged in the front-rear direction.
  9. 9. A cage changing station according to any one of claims 1 to 3, further comprising: a chassis arranged below the main body and provided with rollers on the bottom surface, and And the lifting mechanism is connected with the main body and the chassis.
  10. 10. A changing station according to any one of claims 1 to 3, wherein the body comprises a frameless housing, the roughness of the outer surface of the frameless housing being no more than 1.0um, the cage placement area being located on the top surface of the top plate of the frameless housing.

Description

Cage changing table Technical Field The utility model relates to the technical field of cage changing work tables for experimental animals, in particular to a cage changing table. Background Experimental animals play an irreplaceable important role in the traditional biological fields of life science, medicine, pharmacy and the like, and the human beings are pushed to continuously make breakthrough progress in the life science direction. Good experimental animal quality is an important basis for obtaining accurate and stable experimental data, but in the process of raising and changing cages, the exposure operation of opening the cage cover is required, so that great cross contamination risks are brought to experimental animals. At the same time, such exposure also transmits contamination such as animal waste, animal hair, litter dust, etc. to the feeding environment and cage changing staff. Therefore, it is particularly important to provide bidirectional safety and clean protection for animals, personnel and the environment in the cage changing process. With the growing concern of biosafety, changing cages has begun to appear as a specialized device. In about the 50 s of the 20 th century, the cage changing platform is designed with only some simple protective structures, for example, a simple isolation cover is arranged in a cage changing area, or a primary air filtering device is arranged to reduce the diffusion of pollutants such as animal hair, dander and the like. 20. The research of life science rapidly develops from the 80 th century to the 21 st century, the application of experimental animals is wider, the design and the manufacture of the cage changing platform are more specialized, and the cage changing workstation based on the laminar flow principle appears, so that the cleanliness in the operation process is ensured to a certain extent. In recent years, cage changing work tables are continuously developed to the directions of higher standard cleanliness control, operation efficiency and animal welfare, and automation and intellectualization become new trends of development. The cage platform that trades of current mainstream, including main part, air supply lid and connecting piece, the air supply lid is located the top of main part, and air supply lid and main part are connected to the connecting piece in the left and right sides of main part, and the bottom surface of air supply lid is equipped with the mounting hole, and the top surface of main part is equipped with the cage and places district and return air hole, and the return air hole is placed the circumference in district along the cage and is set up into annular mesh structure, and the mounting hole is relative with the top surface of main part. In order to ensure the laminar flow effect of the wind beam formed between the mounting hole and the return air hole (the wind speed of the formed laminar flow wind cannot be less than 0.36m/s, and the laminar flow wind can be realized by arranging two fans, the cage changing table has larger volume and larger weight, and the cage changing table is difficult to move and relocate. Under the condition that the laboratory space is generally tense, the large cage changing table can occupy excessive precious space, the placement of laboratory layout and other experimental equipment is influenced, and the effective utilization of the laboratory space is limited, so that most cage changing tables are basically in an idle state and are not effectively used. Disclosure of utility model The embodiment of the utility model provides a cage changing table, which comprises an air supply cover body, a main body, an air pipe, a fan, a flow equalizing film and a filter, wherein the air supply cover body is provided with a mounting hole, the main body is positioned below the air supply cover body, the top surface of the main body is provided with a cage placing area, the cage placing area is provided with a return air hole, the mounting hole is opposite to the return air hole, the air pipe is positioned between the air supply cover body and the main body and is connected with the air supply cover body and the main body, the air supply cover body, the air pipe and the main body form an air supply channel, the inlet of the air supply channel is the return air hole, and the outlet of the air supply channel is the mounting hole, and the fan, the flow equalizing film and the filter are all arranged in the air supply channel. In some exemplary embodiments, the flow equalizing membrane is disposed at the mounting hole, and the fan and the filter are disposed within the body. In some exemplary embodiments, the filter element includes a first filter element and a second filter element, the main body has a first sub-duct and a second sub-duct inside, the second sub-duct is located at the upper part of the rear side of the first sub-duct and is in communication with the air duct, the second filter element is located in t