Positive and negative pressure transfer devices for animals

Abstract

A positive and negative pressure transport device for animals includes multiple vehicle bodies connected in series via connectors. The lower part of each vehicle body is a sealed chamber with a door to prevent the transported items from entering. Wheels are located at the bottom of each vehicle body. Of the multiple vehicle bodies, the first is the driving vehicle, and the others are passive vehicles. The upper part of each passive vehicle body has a ventilation chamber B, which connects to the sealed chamber via a downdraft vent B. Ventilation chamber B has a front vent B for connecting to a vehicle body in front, and a rear vent B for connecting to a vehicle body behind, if there is no vehicle body behind it. Compared to existing technologies, the technical advantage of this invention is that a single motor can adjust the pressure within the sealed chamber to meet the transport needs of animals and their carcasses.

Description

Technical Field

[0001] This utility model belongs to the field of laboratory animal (or its carcass) transport technology, specifically relating to a positive and negative pressure transport device for animals. Background Technology

[0002] For the transport of laboratory animals, such as those purchased from the manufacturer and transferred from the manufacturer's SPF environment to the buyer's laboratory SPF environment, a positive pressure device can be used during the transport process to prevent the animals from being contaminated.

[0003] Or it can be used to transport the carcasses of small animals after experiments, using a negative pressure device to prevent contamination to the outside world.

[0004] Setting up positive and negative pressure environments is to address concerns that the sealed chambers used for storing laboratory animals (or their carcasses) may not be properly sealed, leading to contamination or contamination.

[0005] Currently, there is no positive or negative pressure transfer device that is compatible with both. Utility Model Content

[0006] The technical problem to be solved by this utility model is: how to design a positive and negative pressure transfer device for animals that can meet the needs of transferring animals and their carcasses.

[0007] The specific technical solution of this utility model is as follows:

[0008] A positive and negative pressure transport device for animals includes multiple vehicle bodies connected in series via connectors; the lower part of each vehicle body is a sealed chamber with a door to prevent the transported items from being moved; wheels are located at the bottom of each vehicle body; of the multiple vehicle bodies, the first vehicle body is the driving vehicle body, and the remaining vehicle bodies are passive vehicle bodies; the upper part of each passive vehicle body has a ventilation chamber B, which is connected to the sealed chamber via a downdraft vent B; the ventilation chamber B has a front vent B for connecting to the vehicle body in front, and a rear vent B for connecting to the vehicle body behind; if there is no vehicle body behind it, the rear vent B is sealed; the upper part of the driving vehicle body has a ventilation... Chamber A, a ventilation chamber, is divided into three spaces by a front baffle and a rear baffle: a first space, a second space, and a third space. The first space has a front air vent A for connecting to the outside, the third space has a rear air vent A for connecting to the rear of the vehicle body, and the third space has a lower air vent A for connecting to the sealed chamber. The third space contains a filter screen. The second space has a first valve and a second valve on the front baffle, and a third valve and a fourth valve on the rear baffle. The second space contains a fan, with the fan's outlet corresponding to the first and fourth valves, and the fan's inlet corresponding to the second and third valves.

[0009] The rear air vent A, front air vent B, and rear air vent B have the same structure, including an interface cavity. The side wall of the interface cavity is provided with multiple radial ventilation openings for communication with ventilation chamber A or ventilation chamber B. The interface cavity is provided with a piston that can slide along it. A compression spring is provided between the piston and the bottom of the interface cavity. The interface cavity is connected to the outside through a connection port. The side wall of the connection port is a snap-fit ​​wall.

[0010] The connector includes a housing, which comprises three parts connected in series: a left extension, a gripping part, and a right extension. The left and right extensions are symmetrically arranged, and each of them has a radial vent at its outer end.

[0011] The grip is equipped with a ventilation pipe that connects the interior of the left extension part and the right extension part.

[0012] Both the left and right extension sections are equipped with locking tongues, which are connected to the handle via a connector located inside the housing. The pressing part of the handle extends from inside the housing to the outside. A return spring is provided between the locking tongue and the outer wall of the ventilation pipe.

[0013] Both the left and right extension sections are equipped with two symmetrical locking tongues.

[0014] Compared with the prior art, the technical advantage of this utility model is that it has a single motor that can adjust the pressure inside the sealed chamber to meet the needs of transporting animals and their carcasses. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 These are top-view and front-view diagrams of the vehicle body.

[0017] Figure 3 This is a schematic diagram of the airflow path.

[0018] Figure 4 A schematic diagram of the connector. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-2 A positive and negative pressure transfer device for animals, comprising multiple vehicles connected in series via connector 400.

[0021] The lower part of the vehicle body is a sealed chamber 181, and a door 183 is provided on the sealed chamber 181 to prevent the transfer of goods. The bottom of the vehicle body is equipped with wheels 180.

[0022] Of the multiple vehicle bodies, the first vehicle body is the driving vehicle body 100, and the remaining vehicle bodies are the passive vehicle bodies 200.

[0023] The upper part of the passive vehicle body 200 is provided with a ventilation chamber B240. The ventilation chamber B240 is connected to the sealed chamber 181 through the downdraft opening B232. The ventilation chamber B240 is provided with a front air vent B233 for connecting with the front vehicle body, and a rear air vent B for connecting with the rear vehicle body. If there is no vehicle body behind it, the rear air vent B is in a sealed state.

[0024] The upper part of the drive vehicle body 100 is provided with a ventilation chamber A. The ventilation chamber A is provided with a front baffle 111 and a rear baffle 112, which divides it into three spaces: a first space 110, a second space 120, and a third space 130. The first space 110 is provided with a front air vent A121 for connecting with the outside. The third space 130 is provided with a rear air vent A133 for connecting with the rear vehicle body. The third space 130 is provided with a lower air vent A132 for connecting with the sealed chamber 181. The third space 130 is provided with a filter screen 131 and the second space 120.

[0025] like Figure 2-3 The front baffle 111 is provided with a first valve 151 and a second valve 152, the rear baffle 112 is provided with a third valve 153 and a fourth valve 154, and the second space 120 is provided with a fan 113. The air outlet 1132 of the fan 113 corresponds to the first valve 151 and the fourth valve 154, and the air inlet 1131 of the fan 113 corresponds to the second valve 152 and the third valve 153.

[0026] To accommodate connector 300, rear air vent A133, front air vent B233, and rear air vent B have the same structure, including an interface cavity. The side wall of the interface cavity is provided with multiple radial ventilation openings 1331 for communication with ventilation chamber A or ventilation chamber B240. The interface cavity is provided with a piston 1334 that can slide along it. A compression spring 1335 is provided between the piston 1334 and the bottom of the interface cavity. The interface cavity is connected to the outside through a connection port 1332. The side wall of the connection port 1332 is a locking wall 1333.

[0027] like Figure 4 The connector 400 includes a housing 410, which includes three parts connected in series: a left extension 411, a gripping part 412, and a right extension 413. The left extension 411 and the right extension 413 are symmetrically arranged, and each of them has a radial air hole 414 at its outer end.

[0028] The gripping part 412 is provided with a ventilation pipe 450, which connects the interior of the left extension part 411 and the right extension part 413.

[0029] Both the left extension portion 411 and the right extension portion 413 are provided with a locking tongue 430. The locking tongue 430 is connected to the handle 432 through a connector 431. The connector 431 is located inside the housing 410. The pressing part of the handle 432 extends from the inside of the housing 410 to the outside.

[0030] A return spring 433 is provided between the locking tongue 430 and the outer wall of the ventilation pipe 450.

[0031] For secure installation, both the left extension 411 and the right extension 413 are provided with two symmetrical locking tongues 430.

[0032] Its working principle is as follows:

[0033] S10. Regarding the connection and disconnection of connector 400

[0034] S11, such as Figure 4 If rear air vent B needs to be sealed:

[0035] There is no connector 400 extending into the interface cavity inside the rear air vent B. Under the thrust of the compression spring 1335, the piston 1334 presses against the locking wall 1333, blocking the connection between the connection port 1332 and the outside world, thus achieving the sealing of the rear air vent B.

[0036] S12, such as Figure 4 If the rear air vent A133 is connected to the front air vent B233:

[0037] People hold the grip part 412 and insert the left extension part 411 into the interface 1332, moving it backward against the piston 1334. At the same time, people press the handle 432 with their fingers, so that the locking tongue 430 is inside the left extension part 411. As the left extension part 411 and the piston 1334 move backward, when the locking tongue 430 passes the piston 1334, the left extension part 411 stops moving backward, and at the same time, people remove their fingers from the handle 432, so that the locking tongue 430 extends out from inside the left extension part 411. Finally, people release the grip part 412, and under the thrust of the compression spring 1335, the piston 1334 presses the locking tongue 430 against the locking wall 1333. At this time, the ventilation chamber A in the upper part of the drive body 100 is connected to the ventilation pipe 450 through the vent 1331, the rear vent A133, the air hole 414, the internal space of the left extension part 411.

[0038] In the same way, the ventilation chamber B240 at the top of the passive vehicle body 200 is finally connected to the ventilation pipe 450. In this way, the ventilation chamber A at the top of the driving vehicle body 100 is connected to the ventilation chamber B240 at the top of the passive vehicle body 200 through the ventilation pipe 450.

[0039] S13. Regarding the disassembly of connector 400

[0040] People hold the grip part 412 with their hands, and at the same time, they press the handle 432 with their fingers so that the locking tongue 430 is inside the left extension part 411. They hold the grip part 412 and pull the connector 400 outward. After the locking tongue 430 passes the locking tongue 430, they remove their fingers from the handle 432 and take away the connector 400, thus completing the disassembly of the connector 400.

[0041] Finally, under the thrust of the compression spring 1335, the piston 1334 presses against the locking wall 1333, blocking the connection between the connection port 1332 and the outside world, thus achieving the sealing of the rear air vent B (rear air vent A, front air vent B).

[0042] S20. Regarding the positive pressure adjustment of the positive and negative pressure transfer device for animals.

[0043] S21, driving the vehicle body 100 to achieve positive pressure: such as Figure 3 -a In the figure, the first valve 151 and the third valve 153 are in the closed state, and the second valve 152 and the fourth valve 154 are in the open state. When the fan 113 is started, the outside air enters the sealed chamber 181 of the drive vehicle body 100 from the front air outlet A121, the first space 110, the air inlet 1131 of the fan 113, the air outlet 1132 of the fan 113, the second space 120, the filter screen 131, the third space 130, and the lower air outlet A132. The sealed chamber 181 is in a positive pressure state.

[0044] S22. The passive vehicle body 200 achieves positive pressure: Through the connector 400 (see step S12 above), under the action of the fan 113, the air in the ventilation chamber A at the top of the vehicle body 100 is driven into the ventilation chamber B240 at the top of the passive vehicle body 200, and then into the sealed chamber 181 of the passive vehicle body 200, which is in a positive pressure state.

[0045] In this way, all the vehicle bodies are under positive pressure.

[0046] S20. Regarding the negative pressure adjustment of the positive and negative pressure transfer device for animals.

[0047] S21, driving the vehicle body 100 to achieve negative pressure: such as Figure 3 -b Figure shows that the first valve 151 and the third valve 153 are in the open state, and the second valve 152 and the fourth valve 154 are in the closed state. When the fan 113 is started, the air in the sealed chamber 181 is discharged to the outside through the lower air outlet A132, the third space 130, the filter screen 131, the second space 120, the air inlet 1131 of the fan 113, the air outlet 1132 of the fan 113, the first space 110, and the front air outlet A121. The sealed chamber 181 is in a negative pressure state.

[0048] S22. The passive vehicle body 200 achieves negative pressure: Through the connector 400 (see step S12 above), the air in the sealed chamber 181 of the passive vehicle body 200 enters the ventilation chamber A at the top of the drive vehicle body 100 and is discharged. When it enters the sealed chamber 181, it is in a positive pressure state.

[0049] In this way, all the vehicle bodies are under positive pressure.

[0050] Features of this application:

[0051] S1. A single fan can be used to adjust both positive and negative pressure.

[0052] S2. Pressure adjustment of all vehicle bodies can be achieved through connector 400.

[0053] S3. The unique connector design allows for easy connection and disassembly of all vehicle bodies.

[0054] For other details, please refer to the existing technology.

[0055] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A positive and negative pressure transfer device for animals, characterized by: This includes multiple car bodies connected in series via a connector (400); The lower part of the vehicle body is a sealed chamber (181), and the sealed chamber (181) is equipped with a door (183) to prevent the transfer of goods. The bottom of the vehicle body is equipped with wheels (180). Of the multiple vehicle bodies, the first vehicle body is the driving vehicle body (100), and the remaining vehicle bodies are the passive vehicle bodies (200). The upper part of the passive vehicle body (200) is provided with a ventilation chamber B (240), which is connected to a sealed chamber (181) through a vent B (232). The ventilation chamber B (240) is provided with a front vent B (233) for connecting with the front vehicle body, and a rear vent B for connecting with the rear vehicle body. If there is no vehicle body behind it, the rear vent B is sealed. The upper part of the drive vehicle body (100) is provided with a ventilation chamber A. The ventilation chamber A is provided with a front baffle (111) and a rear baffle (112) which divide it into three spaces: a first space (110), a second space (120), and a third space (130). The first space (110) is provided with a front air vent A (121) for connecting with the outside. The third space (130) is provided with a rear air vent A (133) for connecting with the rear vehicle body. The third space (130) is provided with a lower air vent A (132) for connecting with the sealed chamber (181). The third space (130) is provided with a filter screen (131). The second space (120) The front baffle (111) is provided with a first valve (151) and a second valve (152), the rear baffle (112) is provided with a third valve (153) and a fourth valve (154), and the second space (120) is provided with a fan (113). The air outlet (1132) of the fan (113) corresponds to the first valve (151) and the fourth valve (154), and the air inlet (1131) of the fan (113) corresponds to the second valve (152) and the third valve (153).

2. The positive and negative pressure transfer device for animals according to claim 1, characterized in that: The rear air vent A (133), the front air vent B (233), and the rear air vent B have the same structure, including an interface cavity. The side wall of the interface cavity is provided with multiple radial ventilation openings (1331) for communication with ventilation chamber A or ventilation chamber B (240). The interface cavity is provided with a piston (1334) that can slide along it. A compression spring (1335) is provided between the piston (1334) and the bottom of the interface cavity. The interface cavity is connected to the outside through a connection port (1332). The side wall of the connection port (1332) is a snap-fit ​​wall (1333).

3. The positive and negative pressure transfer device for animals according to claim 2, characterized in that: The connector (400) includes a housing (410), which includes three parts connected in series: a left extension (411), a gripping part (412), and a right extension (413). The left extension (411) and the right extension (413) are symmetrically arranged, and each of them has a radial air hole (414) at its outer end. The grip (412) is provided with a ventilation pipe (450), which connects the interior of the left extension (411) and the right extension (413); Both the left extension (411) and the right extension (413) are provided with a locking tongue (430). The locking tongue (430) is connected to the handle (432) through a connector (431). The connector (431) is located inside the housing (410). The pressing part of the handle (432) extends from the inside of the housing (410) to the outside. A return spring (433) is provided between the locking tongue (430) and the outer wall of the ventilation pipe (450).

4. The positive and negative pressure transfer device for animals as claimed in claim 3, wherein: Both the left extension (411) and the right extension (413) are provided with two symmetrical locking tongues (430).

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