Air supply and exhaust pipeline for IVC cage frame

Abstract

The utility model discloses an air supply and exhaust pipeline for an IVC cage frame. The air supply and exhaust pipeline comprises a pipeline body, a branch pipe connecting sleeve and a neck bush, a plurality of ventilation holes corresponding to branch air pipes on the IVC cage frame are formed in the outer wall of the pipeline body; the two ends of the branch pipe connecting sleeve are communicated, the bottom end of the branch pipe connecting sleeve is clamped in the ventilation hole, the neck bush is embedded in an inner cavity of the branch pipe connecting sleeve, and the two ends of the neck bush are communicated to form a ventilation branch; the top end of the branch pipe connecting sleeve is sleeved on the outer wall of a pipe opening at one end of the branch pipe. The pipeline body and the branch air pipe are connected through the branch pipe connecting sleeve, the neck bush is supported in the branch pipe connecting sleeve so as to be clamped in the ventilation hole of the pipeline body in a sealing mode, and the influence of deformation of the air supply and exhaust main pipe due to excessive welding on installation accuracy and sealing performance can be effectively avoided; the welding design of a branch pipe connecting joint is canceled, so that the influence of solder skips and insufficient solder on the sealing performance of the IVC system is avoided; the mounting and dismounting are convenient, and the production and assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological experimental equipment, and more particularly to an air supply and exhaust duct for an IVC cage. Background Art

[0002] Individually ventilated cages (IVCs) are sealed, self-contained units, such as boxes or cages, that provide clean airflow with high air exchange rates and independent ventilation, with centralized exhaust. They provide a living space for SPF-grade laboratory animals and their importance is self-evident. To facilitate animal management, maximize laboratory space utilization, and reduce energy use, IVCs are sterilizable, reusable, and hermetically sealed from the natural environment.

[0003] The IVC cage rack houses and secures IVC cages, providing sealed inlet and outlet connections for each individually enclosed cage. The cage rack primarily consists of a main frame, main supply and exhaust ducts, branch supply and exhaust ducts, and cage mounting rails. The main frame is designed with a specific number of layers and columns to form multiple independent cells, each housing a cage. During operation, the IVC system directs treated clean air into the main supply duct on the cage rack. This duct then branches off into multiple branch ducts that enter each cell. Clean air within the cage is continuously drawn in, where pressure forces exhaust gases into the exhaust branch ducts, which then converge into the exhaust main for further processing within the system. Currently, the supply and exhaust mains on the market typically feature holes drilled, fully welded branch pipe connectors, and then connected to the branch pipes via silicone sleeves.

[0004] At present, the air supply and exhaust pipes of IVC cages have the following shortcomings:

[0005] 1. Each air supply and exhaust main pipe needs to be welded with multiple branch pipe connection joints, which results in a large amount of welding and low production efficiency;

[0006] 2. Due to the large number of welds and the full welding process, deformation is easy to occur, affecting the installation and docking;

[0007] 3. Leakage points and cold welds are easy to occur during the welding process and are difficult to detect, affecting the sealing of the system operation.

[0008] Therefore, how to provide an air supply and exhaust duct for an IVC cage that can effectively avoid the impact of deformation of the air supply and exhaust main pipes due to excessive welding on installation accuracy and sealing, and that is easy and quick to install and disassemble, is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0009] In view of this, the utility model provides an air supply and exhaust duct for an IVC cage, aiming to solve the above technical problems.

[0010] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0011] An air supply and exhaust duct for an IVC cage, comprising a duct body, a branch pipe connecting sleeve and an inner lining sleeve;

[0012] The outer wall of the pipe body is provided with a plurality of ventilation holes corresponding to the bronchi on the IVC cage; the two ends of the branch pipe connecting sleeve are connected, and a first clamping groove is provided on the outer wall of the bottom end thereof and is clamped into the ventilation holes; the inner sleeve is embedded in the inner cavity of the branch pipe connecting sleeve, and the two ends of the inner sleeve are connected to form a ventilation branch;

[0013] The top end of the branch tube connecting sleeve is sleeved on the outer wall of the tube opening at one end of the bronchus, and the two ends of the inner sleeve are respectively connected to the ventilation hole and the inner cavity of the bronchus.

[0014] The beneficial effect of the above technical solution is that the pipeline body is installed on the IVC cage frame and is connected to the bronchus on the IVC cage frame through the branch pipe connecting sleeve. The inner lining sleeve is supported in the inner cavity of the branch pipe connecting sleeve, which enables the branch pipe connecting sleeve to be sealed and connected to the ventilation hole of the pipeline body, thereby improving the accuracy and sealing of the connection between the pipeline body and the bronchus.

[0015] Preferably, the inner wall of the branch pipe connecting sleeve is provided with a plurality of sealing convex lines in the circumferential direction, and the sealing convex lines can improve the sealing performance between the branch pipe connecting sleeve and the bronchus.

[0016] Preferably, a second groove is formed circumferentially on the inner wall of the bottom of the branch pipe connecting sleeve, and a ridge adapted to the second groove is fixed to the circumferential side of the top end of the inner sleeve. The inner sleeve is inserted into the inner cavity of the bottom end of the branch pipe connecting sleeve, and the ridge is embedded in the second groove. The inner sleeve is embedded in the inner cavity of the branch pipe connecting sleeve, and the inner sleeve provides support to seal the branch pipe connecting sleeve in the ventilation hole.

[0017] Preferably, a convex plate is fixed to the outer wall of the inner liner, and the panel of the convex plate abuts against the inner wall of the bottom end of the branch pipe connecting sleeve. The convex plate supports the inner wall of the branch pipe connecting sleeve. When the branch pipe connecting sleeve is engaged with the vent hole, the support of the convex plate enables the branch pipe connecting sleeve to be firmly engaged in the vent hole, further improving the connection performance between the branch pipe connecting sleeve and the pipeline body.

[0018] Preferably, the branch pipe connecting sleeve is formed by pressing silicone, and the inner sleeve is formed by integrally casting plastic. The branch pipe connecting sleeve is made of silicone material and has a certain flexibility, and the inner sleeve is made of plastic material and has a certain hardness. The branch pipe connecting sleeve is supported by the inner sleeve and clamped into the ventilation hole.

[0019] Preferably, a support plate is fixed to the inner wall of the inner liner, and the panel of the support plate is parallel to the flow direction of the wind. The support plate can reinforce the inner liner and increase its service life.

[0020] Preferably, the pipe body is a stainless steel round pipe with assembly grooves formed on the outer walls at both ends to facilitate docking with the IVC system.

[0021] Preferably, a lip is fixed circumferentially on the outer wall of the top end of the branch pipe connecting sleeve to facilitate the insertion and removal of the branch pipe connecting sleeve into the ventilation hole.

[0022] Preferably, the inner wall of the top end of the branch tube connecting sleeve is an inclined surface, which facilitates the insertion of the bronchial guide.

[0023] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses a supply and exhaust duct for an IVC cage, which uses a branch pipe connecting sleeve to connect the duct body and the bronchus, and the inner lining sleeve is embedded in the inner cavity of the branch pipe connecting sleeve to support it, so that the branch pipe connecting sleeve is firmly sealed and clamped in the ventilation hole of the duct body, which can effectively avoid the deformation of the supply and exhaust main pipes due to excessive welding on the installation accuracy and sealing; at the same time, the welding design of the branch pipe connecting joint is cancelled, avoiding the influence of leaking welding and false welding on the sealing of the system; it is easy to install and disassemble, and improves the production and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the air supply and exhaust ducts provided by the utility model;

[0026] Figure 2 This is a schematic diagram of the explosion of the air supply and exhaust ducts provided by the utility model;

[0027] Figure 3 This is a schematic diagram of the branch pipe connecting sleeve structure provided by the utility model;

[0028] Figure 4 This is a schematic diagram of the inner sleeve structure provided by the utility model.

[0029] in,

[0030] 1- pipe body; 11- ventilation hole; 12- assembly slot;

[0031] 2-inner sleeve; 21-convex edge; 22-convex plate; 23-support plate;

[0032] 3- branch pipe connecting sleeve; 31- first slot; 32- lip; 33- sealing convex line; 34- second slot. DETAILED DESCRIPTION

[0033] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0034] See attached Figures 1 to 4 The embodiment of the utility model discloses an air supply and exhaust duct for an IVC cage, comprising a duct body 1, a branch pipe connecting sleeve 3 and an inner lining sleeve 2;

[0035] The outer wall of the pipe body 1 is provided with a plurality of ventilation holes 11 corresponding to the bronchi on the IVC cage; the branch pipe connecting sleeve 3 is connected at both ends, and a first slot 31 is provided on the outer wall of the bottom end thereof and is engaged with the ventilation holes 11. The inner sleeve 2 is embedded in the inner cavity of the branch pipe connecting sleeve 3, and the two ends of the inner sleeve 2 are connected to form a ventilation branch;

[0036] The top end of the branch pipe connecting sleeve 3 is sleeved on the outer wall of the pipe opening at one end of the bronchus, and the two ends of the inner sleeve 2 are respectively connected to the ventilation hole 11 and the inner cavity of the bronchus.

[0037] In this embodiment, there are two pipe bodies, one is the main air supply pipe and the other is the exhaust pipe. The pipe body is installed on the IVC cage and connected to the IVC system. The branch pipe connecting sleeve is clamped in the ventilation hole and supported by the inner lining pipe. The branch pipe connecting sleeve is sealed and connected to one end of the bronchial pipe, and the bronchial pipe is connected to the IVC cage box. When in use, the IVC system will pass the treated clean air into the main air supply pipe on the cage frame, and then the main air supply pipe will be divided into multiple branch pipes to enter each cell cage box. The clean air in the cage box is continuously fed into the exhaust branch pipe under the action of pressure, and then the exhaust gas is collected into the exhaust main pipe and discharged into the system for treatment.

[0038] In order to further optimize the above technical solution and improve the sealing performance between the branch pipe connecting sleeve and the bronchus, a plurality of sealing convex lines 33 are provided on the inner wall of the branch pipe connecting sleeve 3 in the circumferential direction.

[0039] In this embodiment, a second slot 34 is circumferentially provided on the inner wall at the bottom of the branch pipe connecting sleeve 3, and a protrusion 21 adapted to the second slot 34 is fixed on the circumferential side of the top end of the inner sleeve 2. The inner sleeve 2 is inserted into the inner cavity at the bottom end of the branch pipe connecting sleeve 3 and the protrusion 21 is embedded in the second slot 34.

[0040] The inner lining sleeve is arranged in the inner cavity of the branch pipe connecting sleeve to support it, ensuring that the branch pipe connecting sleeve can be firmly clamped in the ventilation hole of the pipeline body.

[0041] In order to further optimize the above technical solution, improve the supporting effect of the inner sleeve on the branch pipe connecting sleeve and the sealing between the connecting sleeve and the pipeline body, a convex plate 22 is fixed to the outer wall of the inner sleeve 2, and the panel of the convex plate 22 abuts against the inner wall of the bottom end of the branch pipe connecting sleeve 3.

[0042] To further optimize the above technical solution, the branch pipe connection sleeve 3 is molded using silicone compression molding, and the inner sleeve 2 is integrally cast using plastic. The rigid inner sleeve supports the flexible branch pipe connection sleeve, providing lateral support within the inner cavity of the branch pipe connection sleeve. This facilitates the insertion of the branch pipe connection sleeve into the ventilation hole, while also improving the connection and sealing performance between the branch pipe connection sleeve and the pipe body.

[0043] In order to further optimize the above technical solution, improve the strength of the inner sleeve, further improve the supporting ability of the inner sleeve to the branch pipe connecting sleeve, and ensure the sealing performance between the branch pipe connecting sleeve and the pipeline body, a support plate 23 is fixed to the inner wall of the inner sleeve 2, and the panel of the support plate 23 is parallel to the flow direction of the wind.

[0044] In order to further optimize the above technical solution and facilitate the connection between the pipeline body and the IVC cage and the IVC system, the pipeline body 1 is a stainless steel round tube, and the outer walls of both ends thereof are formed with assembly grooves 12.

[0045] In order to further optimize the above technical solution and facilitate the insertion and removal of the branch pipe connecting sleeve into the ventilation hole, a lip 32 is fixed circumferentially on the outer wall of the top end of the branch pipe connecting sleeve 3 .

[0046] A groove is formed between the bottom end of the lip and the outer wall of the branch pipe connecting sleeve. During installation and removal, the lip can ensure sufficient friction between the human hand and the outer wall of the branch pipe connecting sleeve, making it easy to insert and remove the branch pipe connecting sleeve.

[0047] In order to further optimize the above technical solution and facilitate the correct insertion of the bronchus, the top inner wall of the branch tube connecting sleeve 3 is an inclined surface.

[0048] In this embodiment, the inner wall of the inner sleeve is a smooth plane to facilitate air circulation.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0050] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A supply and exhaust duct for an IVC cage, characterized in that: It comprises a pipe body (1), a branch pipe connecting sleeve (3) and an inner lining sleeve (2); The outer wall of the pipe body (1) is provided with a plurality of ventilation holes (11) corresponding to the bronchi on the IVC cage; the two ends of the branch pipe connecting sleeve (3) are connected, and a first clamping groove (31) is provided on the peripheral side of the outer wall of the bottom end thereof and is clamped into the ventilation hole (11); the inner sleeve (2) is embedded in the inner cavity of the branch pipe connecting sleeve (3), and the two ends of the inner sleeve (2) are connected to form a ventilation branch; The top end of the branch pipe connecting sleeve (3) is sleeved on the outer wall of the tube opening at one end of the bronchus, and the two ends of the inner sleeve (2) are respectively connected to the ventilation hole (11) and the inner cavity of the bronchus.

2. The air supply and exhaust duct for an IVC cage according to claim 1, characterized in that: The inner wall of the branch pipe connecting sleeve (3) is provided with a plurality of sealing convex lines (33) in the circumferential direction.

3. The air supply and exhaust duct for an IVC cage according to claim 1, characterized in that: A second slot (34) is circumferentially provided on the inner wall of the bottom of the branch pipe connecting sleeve (3); a convex edge (21) adapted to the second slot (34) is fixed on the circumferential side of the top end of the inner sleeve (2); the inner sleeve (2) is inserted into the inner cavity of the bottom end of the branch pipe connecting sleeve (3) and the convex edge (21) is embedded in the second slot (34).

4. The air supply and exhaust duct for an IVC cage according to claim 3, characterized in that: A convex plate (22) is fixed to the outer wall of the inner lining sleeve (2), and a panel of the convex plate (22) abuts against the inner wall of the bottom end of the branch pipe connecting sleeve (3).

5. The air supply and exhaust duct for an IVC cage according to claim 4, characterized in that: The branch pipe connecting sleeve (3) is formed by pressing with silicone, and the inner lining sleeve (2) is formed by integrally casting with plastic.

6. The air supply and exhaust duct for an IVC cage according to claim 1, characterized in that: A support plate (23) is fixed to the inner wall of the inner liner (2), and a panel of the support plate (23) is parallel to the flow direction of wind.

7. The air supply and exhaust duct for an IVC cage according to claim 1, characterized in that: The pipe body (1) is a stainless steel round pipe, and the outer walls at both ends thereof are formed with assembly grooves (12).

8. The air supply and exhaust duct for an IVC cage according to claim 1, characterized in that: A lip (32) is fixed circumferentially on the outer wall of the top end of the branch pipe connecting sleeve (3).

9. The air supply and exhaust duct for an IVC cage according to claim 1, characterized in that: The inner wall of the top end of the branch pipe connecting sleeve (3) is an inclined surface.

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