A multi-mode feeding cage

Abstract

This invention relates to the field of laboratory mouse rearing equipment technology, and the technical problem it aims to solve is the inability to switch between two types of cages. To address this problem, this invention provides a multi-mode rearing cage rack. The invention includes: a cage rack body with at least one cage placement area, the cage placement area having multiple layers of shelves with multiple cage slots for placing cages; a window on at least one side of the cage rack body; a ventilation assembly including an air supply duct at the top of the cage slot and an exhaust duct at the bottom of the cage slot; an air supply port on the air supply duct for supplying fresh air to the cage slot; and an exhaust port on the exhaust duct for extracting exhaust gas from the cage slot; a sealing assembly including a driving component and a diaphragm connected to the driving component, the driving component driving the diaphragm to switch between IVC and IVU modes. This invention can be used with both IVU and IVC mode cages.

Description

Technical Field

[0001] This invention relates to the field of laboratory animal husbandry equipment technology, and in particular to a multi-mode rearing cage rack for bottom-vented cage boxes. Background Technology

[0002] A cage rack is used to hold cages and boxes, and is a device used in combination with cages and boxes for the breeding and rearing of laboratory animals. The cages formed by the combination of cage racks and cages and boxes provide a basic environment for the survival of laboratory mice, including meeting core requirements such as air circulation, easy access to food and water, and easy observation of the mice's condition.

[0003] Independently ventilated cages are a common type of cage equipment, consisting of a cage frame and independently ventilated cage boxes. Each cage box comprises a cage bottom, a cage lid, and a feed trough. Independent air supply and exhaust are achieved for each cage box through air inlets and outlets on the cage frame, a process known as IVC (Independent Ventilation Control) mode. Additionally, there are independently ventilated unit cage frames on the market. These consist of a single cage frame acting as a small barrier, equipped with an openable and closable membrane. The internal cages consist of a bottom box and a feed trough. Independent air supply and exhaust are achieved within a specific enclosed unit through the overall air supply and exhaust vents of the cage frame, a process known as IVU (Independent Ventilation Unit) mode.

[0004] The IVC (Independent Ventilation) model consists of individual cages with independent ventilation, suitable for production and experimentation. The cages are composed of core components such as a base, mesh, and lid, as well as other components like water bottle cage tags. Multiple cages are then placed on a cage frame, each cage serving as an independent ventilation unit.

[0005] The IVU (Indoor Ventilation Unit) model features a single cage frame as an independent ventilation unit, suitable for mass production. The core components of the cage consist of a cage box and a mesh (without a cage lid), and the cage box is open. Multiple cage boxes are placed on the cage frame, which is then covered by both soft and hard transparent materials. The cage boxes are accessed via a zipper lock design in the soft transparent material.

[0006] The two types of cages each have their own characteristics and different applications. Furthermore, the two types of cages cannot be switched between. When using them, you must choose the appropriate breeding cage according to the type of project and your needs.

[0007] Currently, cage designs on the market have the following problems: 1. They have a single usage mode, and once deployed, they cannot be converted to other functions. Summary of the Invention

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0009] To solve the above-mentioned technical problems, the present invention provides a multi-mode rearing cage, comprising:

[0010] The cage frame includes at least one cage box placement area, the cage box placement area is provided with multiple placement shelves, and the placement shelves are provided with multiple cage positions for placing cage boxes; the cage frame is provided with a window on at least one side.

[0011] The air supply and exhaust assembly includes an air supply duct installed at the top of the cage and an exhaust duct installed at the bottom of the cage; the air supply duct is used to supply fresh air to the cage; the exhaust duct is used to extract exhaust gas from the cage.

[0012] The sealing assembly includes a drive component and a diaphragm connected to the drive component. The drive component drives the diaphragm to move and switch between IVC mode and IVU mode.

[0013] In one embodiment of the present invention, the driving component is used to drive the soft membrane to move up and down. When the soft membrane moves down, it seals the cage placement area and the window to form an independent space, switching to IVU mode. When the soft membrane moves up, it forms an open space in the cage placement area, switching to IVC mode.

[0014] In one embodiment of the present invention, the driving component includes a motor reel, and a soft film is wound around the motor reel.

[0015] In one embodiment of the present invention, a soft membrane track groove is provided at the window, and the edge of the soft membrane is engaged in the soft membrane track groove.

[0016] In one embodiment of the present invention, at least one side of the outer wall and inner wall of the soft membrane is provided with a plurality of soft membrane supports, which are spaced apart from top to bottom.

[0017] In one embodiment of the present invention, a soft membrane end support is provided at the bottom of the soft membrane.

[0018] In one embodiment of the present invention, there are multiple windows in the cage placement area, and the multiple windows are arranged side by side.

[0019] In one embodiment of the present invention, the air supply duct includes an air supply branch pipe horizontally disposed at the top of the cage; in a placement shelf, the air supply outlets of multiple cages are connected through the air supply branch pipe; the exhaust duct includes an exhaust branch pipe horizontally disposed at the bottom of the cage; in a placement shelf, the exhaust outlets of multiple cages are connected through the exhaust branch pipe.

[0020] In one embodiment of the present invention, the air supply duct further includes a vertically arranged main air supply pipe, and the air supply branch pipes for the multi-layer shelf placement are connected through the main air supply pipe; the exhaust duct further includes a vertically arranged main exhaust pipe, and the exhaust branch pipes for the multi-layer shelf placement are connected through the main exhaust pipe.

[0021] In one embodiment of the present invention, at the cage location, the air supply duct is provided with a control component for controlling the on / off of the air supply outlet; at the cage location, an identification element is provided for identifying whether a cage box is placed in the cage location; at the same cage location, the identification element and the control component are linked.

[0022] In one embodiment of the present invention, at one cage position, the air intake volume of the air supply port is greater than the air outlet volume of the air exhaust port.

[0023] In one embodiment of the present invention, this application further includes a movable component disposed at the bottom of the cage frame.

[0024] The technical solution of the present invention has the following advantages compared with the prior art:

[0025] The multi-mode rearing cage rack of this invention uses the movement of a soft membrane to create either a closed, independent space or an open space within the cage placement area. When a closed, independent space is formed, it is in IVU mode, where each cage position requires a cage corresponding to the IVU mode (i.e., an IVU mode cage box); within this closed, independent space, multiple cage boxes in a single placement area are interconnected. When an open space is formed, it is in IVC mode, where each cage position requires a cage corresponding to the IVC mode (i.e., an IVC mode cage box); within this open space, multiple cage boxes in a single placement area are not interconnected, and each cage box is an independent unit. Therefore, this application can be used for both IVU and IVC mode cages.

[0026] In addition, this embodiment achieves airflow by supplying air at the top of the cage and exhausting air at the bottom of the cage, thereby creating an airflow between supplying and exhausting air inside the cage to discharge waste gas. Each cage position is equipped with a corresponding air supply port and exhaust port, thus realizing fixed-point independent air supply and exhaust for each cage position. It can also form a stable unidirectional airflow from top to bottom inside the cage, continuously renewing the internal airflow and quickly discharging waste gas, avoiding the residue or diffusion of waste gases such as ammonia.

[0027] Therefore, this embodiment can switch between IVC mode and IVU mode, and can also achieve individual air supply and exhaust for each cage. Attached Figure Description

[0028] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 This is a top view of a multi-mode rearing cage in a preferred embodiment of the present invention;

[0030] Figure 2 This is a front view of the interior of a multi-mode feeding cage in a preferred embodiment of the present invention;

[0031] Figure 3 yes Figure 1 Front view of the multi-mode rearing cage;

[0032] Figure 4 This is a schematic diagram of the IVU mode cage structure;

[0033] Figure 5 This is a structural schematic diagram of the IVC (Indoor Cancellation) cage box;

[0034] Figure 6 This is a schematic diagram of ventilation in IVU mode;

[0035] Figure 7 This is a schematic diagram of ventilation in IVC mode;

[0036] Explanation of reference numerals in the accompanying drawings: 100, cage frame; 110, cage placement area; 120, placement shelf; 121, cage position; 122, main body; 123, cage support rod; 130, window;

[0037] 200. Supply and exhaust ventilation assembly; 210. Supply air outlet; 220. Exhaust air outlet; 230. Supply air branch duct; 240. Exhaust air branch duct; 250. Supply air main duct; 260. Exhaust air main duct;

[0038] 300, Sealing assembly; 310, Drive component; 320, Soft membrane; 330, Soft membrane track groove; 340, Soft membrane support; 350, Soft membrane end support;

[0039] 400, cage box; 400a, IVU mode cage box; 400b, IVC mode cage box; 410, raised limit strip; 420, pad plate; 430, exhaust layer; 440, exhaust port; 450, cage cover;

[0040] 500. Mobile components. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0042] In some comparative embodiments, IVC cages employ top-supply and top-exhaust ventilation, causing ammonia and other gases from the animal excrement to evaporate upwards before being exhausted from the top of the cage, resulting in a mixture of fresh and exhaust gases. In IVU cages, exhaust gases from multiple cages are concentrated and exhausted within a single independent ventilation unit, leading to the accumulation of exhaust gases from multiple cages and affecting husbandry practices.

[0043] In response to the above problems, refer to Figures 1 to 7As shown, an embodiment of the present invention provides a multi-mode breeding cage, including: a cage frame 100, a ventilation assembly 200, and a sealing assembly 300.

[0044] The cage frame 100 includes at least one cage box placement area 110. In some embodiments, to improve space utilization efficiency, the cage frame 100 includes two cage box placement areas 110 (i.e., two cage box placement areas 110 are arranged along the cage box handling direction), and the two cage box placement areas 110 are arranged back to back; the two cage box placement areas 110 can be connected or separated by partitions or the like. In other embodiments, multiple cage box placement areas 110 can be arranged along the length direction of the cage frame 100 (i.e., the direction perpendicular to the cage box handling direction in the horizontal plane), and partitions can be arranged between the multiple cage box placement areas 110. Of course, in some embodiments, both two cage box placement areas 110 can be arranged along the cage box handling direction, and multiple cage box placement areas 110 can be arranged along the length direction of the cage frame 100.

[0045] The cage placement area 110 is equipped with multi-layer placement shelves 120 (e.g. Figure 2 The area marked by the dashed box; or of course, it could be... Figure 2 (The portion shown above or below the dashed box). It should be noted that the cage frame 100 is the supporting frame of this cage frame, and the cage frame 100 can be divided into at least one cage box placement area 110 along its length or width. In each cage box placement area 110, multiple placement shelves 120 can be arranged sequentially from top to bottom. Each placement shelf 120 has multiple cage positions 121 for placing cage boxes 400 arranged side by side along its length direction; the placement shelf 120 is detachably set in the cage frame 100, and the placement shelf 120 includes a main body 122 and multiple cage box support rods 123 connected to the main body 122. The cage box support rods 123 are arranged one-to-one with the cage positions 121, and the cage box support rods 123 have a limiting function. The cage box 400 can be connected and fixed to the cage frame 100 by suspending or erecting it on the cage box support rods 123.

[0046] In some embodiments, the spacing between the multi-layered shelving units 120 can be adjusted as needed to accommodate cages of different sizes and even different laboratory animals. Adaptably, the distance between adjacent cage support rods 123 can also be adjusted.

[0047] The cage frame 100 has a window 130 on at least one side. In some embodiments, when two cage box placement areas 110 are back-to-back, the cage frame 100 has windows 130 on both sides, facilitating the quick placement and removal of cage boxes 400 from the two cage box 400 placement areas through the two windows 130 respectively. In some embodiments, the side of the cage frame 100 with the window 130 can be made of transparent colorless PVC material; the side of the cage frame 100 without the window 130 can be made of transparent colorless acrylic material. Transparent colorless acrylic material satisfies both the function of facilitating observation of the internal situation and provides structural support. Transparent colorless PVC material satisfies the function of facilitating observation of the internal situation, and because PVC material is relatively soft, it can be easily matched with the soft membrane 320. The selection of two materials makes the structure stable and reliable while reducing costs.

[0048] In some embodiments, for efficient use of space, multiple cage positions 121 are arranged along the length of the cage frame 100. Therefore, to facilitate the placement and removal of cage boxes 400 within the cage frame 100, windows 130 are positioned on the front and rear sides of the cage frame 100. The cage frame 100 is a cuboid, with the front and rear sides being the long sides of the bottom surface of the cage frame 100, and the left and right sides being the short sides of the bottom surface of the cage frame 100.

[0049] Each cage space 121 contains a cage box 400, which is a bottom-vented cage box 400. The bottom-vented cage box 400 has a vent 440 on one side near the bottom, a raised limiting strip 410 on the bottom wall, and a bedding board 420 placed inside the cage box 400, resting on the raised limiting strip 410, thus forming a venting layer 430 between the bedding board 420 and the bottom wall of the cage box 400; the vent 440 is located within the venting layer 430. The bedding board 420 has multiple mesh openings, the diameter of which is smaller than the diameter of the bedding material. This allows feces and bedding material to remain on the bedding board 420. When the bedding material reaches saturation with urine, excess urine leaks through the mesh openings into the venting layer 430.

[0050] The air supply and exhaust assembly 200 includes an air supply duct located at the top of the cage 121 and an exhaust duct located at the bottom of the cage 121. The air supply duct has an air outlet 210 for supplying fresh air to the cage 400. The air outlet 210 is connected to the cage cover 450 of the IVC cage, thereby supplying fresh air into the IVC cage through the cage cover 450. Alternatively, the air outlet 210 is connected to the top of the IVU cage, thereby supplying fresh air into the IVU cage. The exhaust duct has an exhaust outlet 220 for extracting exhaust gas from the bottom of the cage 400; the exhaust outlet 220 is connected to an exhaust port 440 in the cage 400.

[0051] The sealing assembly 300 includes a drive component 310 and a flexible membrane 320 connected to the drive component 310. In some embodiments, the flexible membrane 320 may be a transparent flexible membrane 320 to facilitate observation of the internal conditions. The drive component 310 drives the flexible membrane 320 to switch between IVC mode and IVU mode.

[0052] Specifically, in this embodiment, the movement of the soft membrane 320 causes each cage placement area 110 to form either a closed, independent space or an open space. IVU mode: Each cage placement area 110 is a closed, independent space, and each cage position 121 requires the placement of the cage 400 corresponding to the IVU mode (i.e., IVU mode cage 400a); within this closed, independent space, the multiple cages 400 in each cage placement area 110 are interconnected. IVC mode: Each cage placement area 110 is an open space, and each cage position 121 requires the placement of the cage 400 corresponding to the IVC mode (i.e., IVC mode cage 400b); within this open space, the multiple cages 400 in each cage placement area 110 are not interconnected, and each cage 400 is an independent entity. Therefore, this application can be used for both IVU mode cages and IVC mode cages.

[0053] In addition, in this embodiment, air is supplied from the top of the cage 400 and exhausted from the bottom of the cage 400, thereby creating an airflow between the supply and exhaust within the cage 400 to discharge the waste gas. Each cage position 121 is equipped with an air supply port 210 and an exhaust port 220, thus enabling each cage position 121 to be supplied and exhausted at a fixed point. A stable unidirectional airflow from top to bottom can be formed within the cage 400, continuously refreshing the internal airflow and quickly discharging the waste gas, avoiding the residue or diffusion of waste gases such as ammonia.

[0054] Therefore, this embodiment can switch between IVC mode and IVU mode, and can also achieve individual air supply and exhaust for each cage 121.

[0055] Furthermore, the drive component 310 is used to drive the flexible membrane 320 to move up and down. When the flexible membrane 320 descends, it seals the cage placement area 110 and the window 130 to form an independent space, switching to IVU mode; when the flexible membrane 320 rises, it forms an open space in the cage placement area 110, switching to IVC mode. The drive component 310 includes a motor reel, around which the flexible membrane 320 is wound. Thus, the up and down movement of the flexible membrane 320 is controlled by the motor reel, resulting in a small footprint and a stable and reliable structure; it also enables automated control, facilitating convenient opening and closing of the flexible membrane 320; and allows for switching between IVU and IVC modes, accommodating subsequent automation needs.

[0056] Furthermore, a soft membrane track groove 330 is provided at the window 130, for example, at the vertical edge and bottom of the window 130. In some embodiments, the soft membrane track groove 330 can be a U-shaped groove, and the vertical edge and bottom of the soft membrane 320 can be engaged in the corresponding soft membrane track groove 330. The edge of the soft membrane 320 is engaged in the soft membrane track groove 330. On the one hand, the engagement of the soft membrane 320 in the soft membrane track groove 330 allows the soft membrane 320 to descend and seal, thereby forming an independent space and switching to IVU mode. On the other hand, the soft membrane track groove 330 guides the up and down movement of the soft membrane 320.

[0057] Furthermore, at least one side of the outer and inner walls of the diaphragm 320 is provided with multiple diaphragm support members 340, which are spaced apart from top to bottom. The arrangement of the diaphragm support members 340 allows the diaphragm 320 to form multiple frame structures, thereby increasing the pressure-bearing capacity of the entire diaphragm 320. This prevents the diaphragm 320 from being lifted up and detached from the diaphragm track groove 330 when a pressure difference is formed between the entire ventilation area and the outside in IVU mode, which would lead to sealing failure and affect the ventilation effect. On the other hand, it also adds weight to the diaphragm 320, preventing the entire diaphragm 320 from being lifted up.

[0058] Furthermore, the bottom of the diaphragm 320 is provided with a diaphragm end support 350. The end support adds weight to the diaphragm 320 to prevent it from warping and affecting the sealing effect.

[0059] Furthermore, in the cage placement area 110, there are multiple windows 130 arranged side by side. On one hand, multiple windows 130 make use more convenient. On the other hand, the design of multiple windows 130 avoids the situation where if the windows 130 are too large, there would be more corresponding cage positions 121, resulting in greater pressure from the outside after ventilation in IVU mode. Therefore, if the windows 130 are too large, the sealing effect of the entire PVC membrane 320 under the pressure difference is difficult to guarantee. Therefore, multiple windows 130 can be set.

[0060] Furthermore, the air supply duct includes an air supply branch pipe 230 horizontally installed at the top of the cage 121; in a shelf 120, the air supply outlets 210 of multiple cages 121 are connected through the air supply branch pipe 230; the exhaust duct includes an exhaust branch pipe 240 horizontally installed at the bottom of the cage 121; in a shelf 120, the exhaust outlets 220 of multiple cages 121 are connected through the exhaust branch pipe 240. In this way, multiple cages 121 on the same shelf 120 are supplied with air and exhausted through the same duct, simplifying ductwork layout, reducing costs, and improving space utilization.

[0061] The air supply duct also includes a vertically arranged main air supply pipe 250, through which the air supply branch pipes 230 of the multi-layer shelf 120 are connected; the exhaust duct also includes a vertically arranged main exhaust pipe 260, through which the exhaust branch pipes 240 of the multi-layer shelf 120 are connected. Specifically, in this embodiment, the air supply branch pipes 230 of the multi-layer shelf 120 can be connected via the main air supply pipe 250, and the exhaust branch pipes 240 of the multi-layer shelf 120 can be connected via the main exhaust pipe 260, thereby simplifying the duct layout. In some embodiments, the main air supply pipe 250 and the main exhaust pipe 260 are arranged adjacent to each other and are located at the center of the cage frame 100.

[0062] Furthermore, at cage position 121, the air supply duct is equipped with a control element for controlling the on / off state of the air supply outlet 210; in some embodiments, the control element can be an airflow solenoid valve. Cage position 121 is equipped with an identification element for identifying whether a cage box 400 is placed in cage position 121; in some embodiments, the sensor can be a weight sensor. When a cage box 400 is placed and removed at cage position 121, the sensor can detect the weight change, thereby determining whether a cage box 400 is placed at cage position 121. In other embodiments, the sensor can be a laser sensor. At the same cage position 121, the identification element and the control element are linked. For example, this application also includes a central control unit, and both the identification element and the control element are typically connected to the central control unit. Thus, the identification element can transmit a cage box 400 placement information signal from a cage position 121 to the central control unit, and then the central control unit controls the on / off state of the control element corresponding to that cage position 121 based on this information. Specifically, in this embodiment, the identification element and the control element are linked, so that air will be automatically supplied when the cage box 400 is placed, and no air will be supplied when the cage box 400 is not placed, so as to realize the air volume adjustment according to the use of the cage position 121 and save costs.

[0063] Furthermore, at cage position 121, the air intake volume of the air inlet 210 is greater than the air outlet volume of the exhaust 220, thus operating in positive pressure mode. In some embodiments, the number of air inlets 210 at each cage position 121 is greater than the number of exhaust 220s. For example, there are three air inlets 210 and one exhaust 220 at each cage position 121. Thus, under the same wind speed, the air intake volume at cage position 121 is greater than the air outlet volume at exhaust 220, facilitating the discharge of exhaust gas from the exhaust 220. Of course, in negative pressure mode: at cage position 121, the air intake volume of the air inlet 210 is less than the air outlet volume of the exhaust 220. Negative pressure mode and positive pressure mode can be selected according to usage requirements.

[0064] Furthermore, this application also includes a movable component 500 disposed at the bottom of the cage frame 100. The movable component 500 includes a plurality of casters. Specifically, in this embodiment, the movable component 500 can be used to move the rearing cage to any position.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A multi-mode rearing cage, characterized in that, include: The cage frame includes at least one cage box placement area, one of the cage box placement areas is provided with multiple placement shelves, and one of the placement shelves is provided with multiple cage positions for placing the cage boxes; the cage frame is provided with a window on at least one side. The air supply and exhaust assembly includes an air supply duct disposed at the top of the cage and an exhaust duct disposed at the bottom of the cage. A sealing assembly includes a drive component and a soft membrane connected to the drive component, wherein the drive component drives the soft membrane to move and switch between IVC mode and IVU mode. The driving component is used to drive the soft membrane to move up and down. When the soft membrane descends, it seals the cage placement area with the window to form an independent space, switching to IVU mode. When the soft membrane rises, it forms an open space in the cage placement area, switching to IVC mode. The air supply duct is provided with an air outlet for supplying fresh air to the cage. When the independent space is formed, it is in IVU mode. Each cage position is placed with an IVU mode cage box. In this closed independent space, multiple cage boxes in the cage box placement area are interconnected. The air supply outlet is connected to the top of the IVU mode cage box to supply fresh air to the interior of the IVU mode cage box. When the open space is formed, it is in IVC mode. Each cage position is placed with an IVC mode cage box. In the open space, the multiple IVC mode cage boxes in the cage box placement area are not connected to each other. Each IVC mode cage box is an independent individual. The air outlet is connected to the cage cover of the IVC mode cage box to supply fresh air to the interior of the IVC mode cage box. The exhaust duct is provided with an exhaust port for drawing out the waste gas from the bottom of the cage box, and an exhaust port is provided on one side of the cage box near the bottom, and the exhaust port is connected to the exhaust port. By supplying air to the top of the cage and exhausting air to the bottom of the cage, a unidirectional airflow from top to bottom is formed inside the cage, continuously refreshing the airflow inside the cage and quickly expelling the exhaust gas; each cage position is equipped with the air supply port and the air exhaust port, realizing fixed-point individual air supply and exhaust for each cage position.

2. The multi-mode rearing cage according to claim 1, characterized in that: The window is provided with a soft membrane track groove, and the edge of the soft membrane is engaged in the soft membrane track groove.

3. The multi-mode rearing cage according to claim 1, characterized in that: In the cage placement area, there are multiple windows, and the multiple windows are arranged side by side.

4. The multi-mode rearing cage according to claim 1, characterized in that: The air supply duct includes an air supply branch pipe horizontally arranged at the top of the cage; in one of the placement shelves, the air supply outlets of multiple cages are connected through the air supply branch pipe; the exhaust duct includes an exhaust branch pipe horizontally arranged at the bottom of the cage; in one of the placement shelves, the exhaust outlets of multiple cages are connected through the exhaust branch pipe.

5. The multi-mode rearing cage according to claim 4, characterized in that: The air supply duct also includes a vertically arranged main air supply pipe, through which the air supply branch pipes for the multi-layered shelving units are connected; the exhaust duct also includes a vertically arranged main exhaust pipe, through which the exhaust branch pipes for the multi-layered shelving units are connected.

6. The multi-mode rearing cage according to claim 4, characterized in that: At the cage location, the air supply duct is equipped with a control component for controlling the on / off state of the air supply outlet; at the cage location, an identification element is provided for identifying whether a cage box is placed in the cage location; at the same cage location, the identification element is linked with the control component.

7. The multi-mode rearing cage according to claim 1, characterized in that: At the aforementioned cage location, the air intake volume of the air supply port is greater than the air outlet volume of the air exhaust port.

8. The multi-mode rearing cage according to claim 1, characterized in that: It also includes a movable component located at the bottom of the cage frame.

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