Laboratory biological rearing cage ventilation device

Abstract

The utility model relates to the technical field of biological rearing, in particular to a laboratory biological rearing cage ventilation device which comprises a rearing cage, an air inlet hole is formed in the top end of the rear side of the rearing cage, an air filter cartridge is fixedly installed on the rear side of the rearing cage, one end of the air filter cartridge is inserted into the air inlet hole, and an air outlet hole is formed in the bottom end of the rear side of the rearing cage. The air outlet hole is communicated with one end of an air collecting pipe, the other end of the air collecting pipe is communicated with a main pipeline, one end of the main pipeline is communicated with an exhaust fan, a grating is fixedly installed in the air outlet hole, and when the exhaust fan works, the exhaust fan extracts air in the rearing cage through the main pipeline and the air collecting pipe, so that the interior of the rearing cage is in a negative pressure state; at the moment, external air enters the rearing cage through the air filter cylinder, the air pressure in the rearing cage is maintained, air replacement in the rearing cage is more convenient to control, the structure of an air replacement system in the rearing cage is simpler, and the manufacturing cost of the rearing cage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of biological breeding technology, and in particular to a ventilation device for laboratory biological breeding cages. Background Technology

[0002] Currently available gas filters are complex in structure, have unsatisfactory filtration effects, and low permeability. For example, patent application number "200720074317.5," entitled "A Gas Filter Element," describes a filter element housed within a gas filter housing. It includes a filter unit, upper and lower end caps with a central opening covering the top and bottom of the filter unit, and a sealing ring fitted over the central opening to seal the filter element and the housing. The filter unit comprises coaxial inner and outer cylindrical layers, and a filter layer between the inner and outer cylindrical layers for adsorbing solid particles. Both the inner and outer cylindrical layers have multiple mesh openings. The filter unit also includes a drainage layer fitted outside the outer cylindrical layer to guide liquid droplets to the bottom of the filter. This filter layer consists of two fiber filter layers and a fiber layer sandwiched between the two surface filter layers. The entire device is not only structurally complex but also lacks maximum filtration efficiency, achieving only SPF (no specific pathogens) purification levels. It is also bulky and has limited applicability. Meanwhile, existing technologies also incorporate a fiber-core air reducer inside the casing, which not only increases the overall size of the device but also raises the cost. Utility Model Content

[0003] The purpose of this invention is to provide a ventilation device for laboratory biological rearing cages to solve the problems existing in the prior art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A ventilation device for a laboratory biological rearing cage includes a rearing cage with an air inlet at the top rear side. An air filter is fixedly installed on the rear side of the rearing cage, with one end of the air filter inserted into the air inlet. An air outlet is provided at the bottom rear side of the rearing cage, and one end of the air outlet is connected to an air collecting pipe. The other end of the air collecting pipe is connected to a main pipe, and one end of the main pipe is connected to an exhaust fan. A grid is fixedly installed inside the air outlet.

[0006] By adopting the above technical solution, when the exhaust fan is working, it draws air from inside the breeding cage through the main pipe and the air collection pipe, making the inside of the breeding cage a negative pressure state. At this time, outside air enters the inside of the breeding cage through the air filter cartridge to maintain the air pressure inside the breeding cage, making the air exchange inside the breeding cage easier to control. Moreover, the structure of the air exchange system inside the breeding cage is simpler, reducing the cost of the breeding cage.

[0007] In a further embodiment, the air filter cartridge includes a sleeve and multiple filter elements disposed inside the sleeve. The multiple filter elements are equally spaced along the axial direction of the sleeve, and a spacer is provided between each pair of adjacent filter elements. Each filter element is bonded and fixed to the spacer.

[0008] In a further embodiment, a flow monitoring valve is provided on the gas collection pipe.

[0009] In a further embodiment, a one-way air intake valve is provided inside the air intake port.

[0010] By adopting the above technical solution, the foul air inside the breeding cage is prevented from escaping through the air inlet to the outside of the cage and causing pollution to the laboratory environment.

[0011] In a further embodiment, an electric heating coil is provided inside the exhaust port of the exhaust fan.

[0012] The above technical solution is used to vent the air from inside the extracted breeding cage.

[0013] In a further embodiment, multiple rearing cages are provided, and the multiple rearing cages are arranged in a matrix.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. By using an exhaust fan to draw air from inside the rearing cage through the main pipe and air collection pipe, the air inside the rearing cage is brought into a negative pressure state. At this time, outside air enters the rearing cage through the air filter cartridge, maintaining the air pressure inside the rearing cage. This makes the air exchange inside the rearing cage easier to control, and the structure of the air exchange system inside the rearing cage is simpler, reducing the cost of the rearing cage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the feeding cage used to illustrate this utility model.

[0018] In the diagram, 1. Rearing cage; 2. Air filter cartridge; 3. Air collection pipe; 4. Main pipe; 5. Exhaust fan; 6. Grille. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0021] Example 1:

[0022] like Figures 1-2 As shown, a ventilation device for laboratory biological rearing cages includes a rearing cage 1. An air inlet is located at the top rear side of the rearing cage 1. An air filter 2 is fixedly installed on the rear side of the rearing cage 1, with one end of the air filter 2 inserted into the air inlet. An air outlet is located at the bottom rear side of the rearing cage 1, connected to one end of an air collecting pipe 3. The other end of the air collecting pipe 3 is connected to a main pipe 4, and one end of the main pipe 4 is connected to an exhaust fan 5. A grille 6 is fixedly installed inside the air outlet. The air filter 2 includes a sleeve and multiple filter elements disposed inside the sleeve. The multiple filter elements are evenly spaced along the axial direction of the sleeve, with spacer brackets between adjacent filter elements. Each filter element is bonded and fixed to the spacer bracket. A flow monitoring valve is installed on the air collecting pipe 3, a one-way air inlet valve is installed in the air inlet, and an electric heating coil is installed in the exhaust port of the exhaust fan 5. Multiple rearing cages 1 are arranged in a matrix.

[0023] Specific implementation process: When the exhaust fan is working, it draws air from inside the breeding cage through the main pipe and the air collection pipe, making the inside of the breeding cage a negative pressure state. At this time, outside air enters the inside of the breeding cage through the air filter, maintaining the air pressure inside the breeding cage. This makes the air exchange inside the breeding cage easier to control, and the structure of the air exchange system inside the breeding cage is simpler, reducing the cost of the breeding cage.

[0024] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A ventilation device for laboratory biological rearing cages, characterized in that: The cage includes a rear cage (1), with an air inlet at the top rear side. An air filter (2) is fixedly installed on the rear side of the rear cage (1), with one end of the air filter (2) inserted into the air inlet. An air outlet is provided at the bottom rear side of the rear cage (1), with one end of an air collecting pipe (3) connected to the air outlet. The other end of the air collecting pipe (3) is connected to a main pipe (4), with one end of the main pipe (4) connected to an exhaust fan (5). A grille (6) is fixedly installed inside the air outlet.

2. The ventilation device for a laboratory biological rearing cage according to claim 1, characterized in that: The air filter cartridge (2) includes a sleeve and multiple filter elements disposed inside the sleeve. The multiple filter elements are equally spaced along the axial direction of the sleeve, and a spacer is provided between each pair of adjacent filter elements. Each filter element is bonded and fixed to the spacer.

3. The ventilation device for a laboratory biological rearing cage according to claim 1, characterized in that: A flow monitoring valve is installed on the gas collecting pipe (3).

4. The ventilation device for a laboratory biological rearing cage according to claim 1, characterized in that: A one-way air intake valve is installed inside the air intake port.

5. The ventilation device for a laboratory biological rearing cage according to claim 1, characterized in that: An electric heating coil is installed in the exhaust port of the exhaust fan (5).

6. The ventilation device for a laboratory biological rearing cage according to claim 1, characterized in that: The breeding cages (1) are provided in multiple ways, and the multiple breeding cages (1) are arranged in a matrix.

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