A carbon dioxide euthanasia device for experimental small animals

Abstract

The invention discloses a carbon dioxide euthanasia device for experimental small animals, belonging to the technical field of animal experimental devices, comprising: a chassis, the interior of which is a sealed cavity, a chassis door hinged on the chassis, and a ventilation pipe connected to the outside provided on the chassis; a lifter, which is fixedly connected to the chassis through a mounting plate; a placement slot, which is arranged in the chassis, and the placement slot is located below the lifter; the invention uses a second exhaust fan to draw air in the placement slot into the chassis, so that a negative pressure is formed in the placement slot, and then stops the second exhaust fan, opens the solenoid valve, and carbon dioxide passes through a hose from a first joint and enters the placement slot from the second joint, a carbon dioxide concentration detector continuously detects the carbon dioxide concentration in the placement slot, and when the carbon dioxide concentration in the placement slot reaches a preset value, closes the solenoid valve, and directly fills the carbon dioxide in the placement slot, thereby greatly reducing the use of carbon dioxide and saving costs.

Description

Technical Field

[0001] The invention belongs to the technical field of animal experimental devices, and in particular relates to a carbon dioxide euthanasia device for experimental small animals. Background Art

[0002] Animal experiments refer to scientific research conducted in laboratories using animals in order to gain new knowledge about biology, medicine, etc. or to solve specific problems. Many live animals are needed in the process of animal experiments. These live animals need to be disposed of in a centralized manner after the experiment is completed, and euthanasia equipment is required.

[0003] Currently, the equipment for performing animal euthanasia is to fill the environment with carbon dioxide to suffocate the animals to death. This results in a relatively large amount of carbon dioxide used and a slow filling process. In addition, when a living animal is suffocated to death, it will jump in the closed space, which will cause discomfort to the operator. Summary of the invention

[0004] The purpose of the present invention is to propose a carbon dioxide euthanasia device for experimental small animals in order to solve the problem that the equipment for performing animal euthanasia is to fill the large environment with carbon dioxide, and the living animals jump in the closed space when they are suffocated to death, resulting in a large amount of carbon dioxide usage and causing discomfort to the operator.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a carbon dioxide euthanasia device for experimental small animals, comprising:

[0006] A chassis, the interior of which is a sealed cavity, a door is hingedly connected to the chassis, and a ventilation pipe communicating with the outside is provided on the chassis;

[0007] A lifter, which is fixedly connected in the chassis via a mounting plate;

[0008] A placement slot, which is provided in the chassis, and the placement slot is located below the lifter;

[0009] A sealing plate, which is installed at the lower end of the lifter, the sealing plate covers the placement groove and forms a sealed cavity in the placement groove;

[0010] A first exhaust fan, which is mounted on the mounting plate, and the first exhaust fan is connected to the ventilation pipe;

[0011] A second exhaust fan, which is mounted on the sealing plate, and the second exhaust fan is connected to the interior of the placement slot and the interior of the chassis;

[0012] An air supply mechanism, which communicates the outside of the chassis with the inside of the placement slot;

[0013] The pressing mechanism is fixedly mounted on the sealing plate, and the pressing mechanism extends into the placement groove.

[0014] As a further description of the above technical solution:

[0015] The air supply mechanism includes a first connector, a solenoid valve and a second connector. The first connector is installed on the chassis, the solenoid valve is installed on the mounting plate, and the second connector is installed on the sealing plate. Both the first connector and the second connector are connected to the solenoid valve through a hose.

[0016] As a further description of the above technical solution:

[0017] The pressing mechanism comprises two connecting rods and a fixed net. The two connecting rods are fixedly mounted on the sealing plate and extend into the placement groove. The fixed net is connected to the two connecting rods.

[0018] As a further description of the above technical solution:

[0019] A carbon dioxide concentration detector is arranged in the chassis.

[0020] As a further description of the above technical solution:

[0021] The lifter is an electric cylinder.

[0022] As a further description of the above technical solution:

[0023] The chassis is provided with a control switch, and the control switch is electrically connected to the first exhaust fan and the second exhaust fan.

[0024] As a further description of the above technical solution:

[0025] A sealing gasket is arranged on the bottom surface of the sealing plate.

[0026] As a further description of the above technical solution:

[0027] An ultraviolet germicidal lamp is arranged in the chassis.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. In the present invention, the air in the placement tank is sucked into the chassis through the second exhaust fan, so that a negative pressure is formed in the placement tank, and then the second exhaust fan is stopped, the solenoid valve is opened, and the carbon dioxide passes through the hose from the first joint and enters the placement tank from the second joint. The carbon dioxide concentration detector continuously detects the carbon dioxide concentration in the placement tank. When the carbon dioxide concentration in the placement tank reaches a preset value, the solenoid valve is closed and the carbon dioxide is directly filled in the placement tank, which greatly reduces the use of carbon dioxide and saves costs.

[0030] 2. In the present invention, when the sealing plate is pressed down, the connecting rod is driven down together, and the fixed net covers the small animals in the placement slot to prevent the small animals from struggling violently during the suffocation process. The noise generated will bring a bad experience to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a carbon dioxide euthanasia device for experimental small animals.

[0032] Figure 2 A schematic diagram of the internal structure of a carbon dioxide euthanasia device for experimental small animals Figure 1 .

[0033] Figure 3 for Figure 2 Reference diagram for usage status.

[0034] Figure 4 A schematic diagram of the internal structure of a carbon dioxide euthanasia device for experimental small animals Figure 2 .

[0035] Figure 5 A schematic diagram of the internal structure of a carbon dioxide euthanasia device for experimental small animals Figure 3 .

[0036] Figure 6 A schematic diagram of the internal structure of a carbon dioxide euthanasia device for experimental small animals Figure 4 .

[0037] Legend:

[0038] 1. Chassis; 2. Box door; 3. Ventilation duct; 4. Lifter; 5. Mounting plate; 6. Placement slot; 7. Sealing plate; 8. First exhaust fan; 9. Second exhaust fan; 10. Air supply mechanism; 101. First joint; 102. Solenoid valve; 103. Second joint; 11. Pressing mechanism; 111. Connecting rod; 112. Fixing net; 12. Carbon dioxide concentration detector; 13. Control switch; 14. Sealing pad; 15. Ultraviolet germicidal lamp; 16. Display screen. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-6 The present invention provides a technical solution: a carbon dioxide euthanasia device for experimental small animals, comprising:

[0041] A case 1, the interior of which is a sealed cavity, a case door 2 is hingedly connected to the case 1, and a ventilation pipe 3 communicating with the outside is provided on the case 1;

[0042] A lifter 4, which is fixedly connected to the chassis 1 via a mounting plate 5;

[0043] A placement slot 6, which is provided in the chassis 1, and the placement slot 6 is located below the lifter 4;

[0044] A sealing plate 7 is installed at the lower end of the lifter 4, and the sealing plate 7 covers the placement groove 6 and forms a sealed cavity in the placement groove 6;

[0045] A first exhaust fan 8, which is installed on the mounting plate 5, and the first exhaust fan 8 is connected to the ventilation pipe 3;

[0046] A second exhaust fan 9, which is installed on the sealing plate 7, and the second exhaust fan 9 is connected to the interior of the placement groove 6 and the interior of the chassis 1;

[0047] An air supply mechanism 10, which communicates the outside of the chassis 1 with the inside of the placement slot 6;

[0048] A pressing mechanism 11 is fixedly mounted on the sealing plate 7, and the pressing mechanism 11 extends into the placement groove 6;

[0049] The gas supply mechanism 10 includes a first joint 101, a solenoid valve 102, and a second joint 103. The first joint 101 is mounted on the chassis 1, the solenoid valve 102 is mounted on the mounting plate 5, and the second joint 103 is mounted on the sealing plate 7. The first joint 101 and the second joint 103 are both connected to the solenoid valve 102 through a hose. The first joint 101 is connected to the carbon dioxide gas supply pipe. Carbon dioxide passes through the hose and the solenoid valve 102 and enters the placement tank 6 from the second joint 103. The solenoid valve 102 controls the supply of carbon dioxide, so that the concentration of carbon dioxide in the placement tank 6 is adjustable.

[0050] The pressing mechanism 11 includes two connecting rods 111 and a fixed net 112. The two connecting rods 111 are fixedly mounted on the sealing plate 7 and extend into the placement slot 6. The fixed net 112 is connected to the two connecting rods 111. The fixed net 112 is used to cover the small animals in the placement slot 6 to prevent the small animals from struggling violently during suffocation. The noise generated will bring a bad experience to the operator.

[0051] The chassis 1 is provided with a carbon dioxide concentration detector 12, which is used to detect the concentration of carbon dioxide in the chassis 1 and in the placement slot 6. The chassis 1 is provided with a display screen 16 connected to the carbon dioxide concentration detector 12, which is used to display the carbon dioxide concentration value, so as to facilitate the control of the carbon dioxide concentration in the chassis 1 and in the placement slot 6;

[0052] The lifter 4 is an electric cylinder, which has the characteristic of a smooth lifting process;

[0053] The chassis 1 is provided with a control switch 13, and the control switch 13 is electrically connected to the first exhaust fan 8 and the second exhaust fan 9, and the control switch 13 has a switch control function on the operation of the first exhaust fan 8 and the second exhaust fan 9;

[0054] A sealing gasket 14 is provided on the bottom surface of the sealing plate 7 to ensure the sealing inside the placement groove 6;

[0055] The chassis 1 is provided with an ultraviolet germicidal lamp 15 , which is convenient for disinfecting the inside of the chassis 1 .

[0056] Working principle: First, connect the first connector 101 to the carbon dioxide gas supply pipe, the solenoid valve 102 is in the closed state, open the box door 2, put the small animal into the placement slot 6, and then close the box door 2. The lifter 4 descends to press the sealing plate 7 on the placement slot 6, and the sealing gasket 14 presses the edge of the placement slot 6 to form a sealed cavity in the placement slot 6. When the sealing plate 7 is pressed down, it drives the connecting rod 111 to descend together, and the fixed net 112 covers the small animal in the placement slot 6 to prevent the small animal from struggling violently during the suffocation process. Secondly, turn on the control switch 13 to control the operation of the second exhaust fan 9. The second exhaust fan 9 draws the air in the placement slot 6 into the chassis 1. At this time, a negative pressure state is formed in the placement slot 6. Close the control switch 13 to control the second exhaust fan 9 to stop, open the solenoid valve 102, and the carbon dioxide passes through the hose from the first connector 101 and enters the placement slot 6 from the second connector 103. The carbon dioxide concentration detector 12 continuously detects the carbon dioxide concentration in the placement slot 6, which can be displayed through the display screen 16 To observe the value of carbon dioxide concentration. When the carbon dioxide concentration in the placement slot 6 reaches the preset value, close the solenoid valve 102 and wait for the small animal to suffocate to death. Then, the lifter 4 rises, the placement slot 6 is connected with the chassis 1, and the carbon dioxide diffuses into the chassis 1. The control switch 13 is turned on to control the first exhaust fan 8 to operate. The first exhaust fan 8 extracts the gas with carbon dioxide in the chassis 1 through the ventilation pipe 3, and the extracted gas waits for centralized filtration treatment. When the placement slot 6 is connected with the inside of the chassis 1, the carbon dioxide concentration detector continuously detects the carbon dioxide concentration in the chassis 1. The value of carbon dioxide concentration can be observed through the display screen 16. When the carbon dioxide concentration in the chassis 1 reaches the same as the carbon dioxide concentration in the environment outside the chassis 1, the control switch 13 is turned off and the first exhaust fan 8 stops. Finally, open the box door 2, take out the placement slot 6 as a whole, and centrally treat the small animals that died in the placement slot 6. Close the box door 2, turn on the ultraviolet sterilization lamp 15, and disinfect the inside of the chassis 1.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbon dioxide euthanasia device for experimental small animals, characterized by: include: A case (1) having a sealed cavity inside, a case door (2) hingedly connected to the case (1), and a ventilation pipe (3) communicating with the outside provided on the case (1); A lifter (4) fixedly connected to the chassis (1) via a mounting plate (5); A placement slot (6) is provided in the chassis (1), and the placement slot (6) is located below the lifter (4); A sealing plate (7) installed at the lower end of the lifter (4), the sealing plate (7) covers the placement groove (6) and forms a sealed cavity in the placement groove (6); a first exhaust fan (8), which is mounted on the mounting plate (5), and the first exhaust fan (8) is connected to the ventilation pipe (3); a second exhaust fan (9) mounted on the sealing plate (7), wherein the second exhaust fan (9) is connected to the interior of the placement groove (6) and the interior of the chassis (1); An air supply mechanism (10) communicating the outside of the chassis (1) and the inside of the placement slot (6); A pressing mechanism (11) is fixedly mounted on the sealing plate (7), and the pressing mechanism (11) extends into the placement groove (6); The pressing mechanism (11) comprises two connecting rods (111) and a fixed net (112); the two connecting rods (111) are fixedly mounted on the sealing plate (7), and the connecting rods (111) extend into the placement groove (6); and the fixed net (112) is connected to the two connecting rods (111).

2. The carbon dioxide euthanasia equipment for experimental small animals according to claim 1, characterized in that: The air supply mechanism (10) comprises a first connector (101), a solenoid valve (102) and a second connector (103); the first connector (101) is mounted on the chassis (1); the solenoid valve (102) is mounted on the mounting plate (5); the second connector (103) is mounted on the sealing plate (7); and both the first connector (101) and the second connector (103) are connected to the solenoid valve (102) via a hose.

3. The carbon dioxide euthanasia equipment for experimental small animals according to claim 1, characterized in that: A carbon dioxide concentration detector (12) is arranged in the chassis (1).

4. The carbon dioxide euthanasia equipment for experimental small animals according to claim 1, characterized in that: The lifter (4) is an electric cylinder.

5. The carbon dioxide euthanasia equipment for experimental small animals according to claim 1, characterized in that: The chassis (1) is provided with a control switch (13), and the control switch (13) is electrically connected to the first exhaust fan (8) and the second exhaust fan (9).

6. The carbon dioxide euthanasia equipment for experimental small animals according to claim 1, characterized in that: A sealing gasket (14) is arranged on the bottom surface of the sealing plate (7).

7. The carbon dioxide euthanasia equipment for experimental small animals according to claim 1, characterized in that: An ultraviolet sterilization lamp (15) is arranged in the chassis (1).

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