Air tap self-sealing assembly of IVC cage box

Abstract

The utility model discloses an air tap self-sealing assembly of an IVC cage box, which is arranged between a breather pipe and the cage box and comprises an air tap and an air pipe universal head, and the air pipe universal head is sleeved on the air tap and is telescopic; the air tap comprises a connector, an inner rod and a plug which are connected into a whole, an air channel communicated with the breather pipe is formed in the middle of the air tap, and an air flow through opening communicated with the air channel is formed in the outer wall of the air tap. When the air pipe universal head retracts on the inner rod, a gap is formed between the plug and the air outlet hole, and the air outlet hole is opened and is communicated with the airflow through opening; and when the air pipe universal head is in an unstressed natural state, the plug plugs the air outlet hole. According to the air tap self-sealing assembly of the IVC cage box, the functions of automatic ventilation when the cage box exists and automatic sealing when the cage box does not exist are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to IVC cage field, especially, relate to a gas nozzle self -sealing subassembly of IVC cage. BACKGROUND

[0002] For small laboratory animals such as mice, at present, IVC (independent ventilated cage,

[0003] Individually Ventilated Cages) and other equipment are generally used for batch culture. Common IVC cages are generally rectangular bodies, including a box body and a box cover in sealing cooperation with the box body. In order to keep the air in the cage clean, a ventilation structure needs to be provided on the box body.

[0004] The main purpose of the cage changing station is to facilitate the cage changing work of the staff and to optimize the working environment of the staff. The existing cage rack does not have an automatic sealing device, and when there is no cage, air will also be discharged, which cannot be automatically sealed, and is very inconvenient to use. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a gas nozzle self-sealing subassembly of IVC cage, which realizes the functions of automatic ventilation with a cage and automatic sealing without a cage.

[0006] The above-mentioned purpose of the utility model is realized by the following technical scheme:

[0007] A gas nozzle self-sealing subassembly of IVC cage is arranged between a ventilation pipe and a cage, comprising a gas nozzle and a gas pipe universal joint, the gas pipe universal joint is sleeved on the gas nozzle and is telescopic, and an air outlet hole is arranged at the end of the gas pipe universal joint.

[0008] The gas nozzle comprises a connecting head, an inner rod and a plug, the connecting head is used for connecting with the ventilation pipe, the inner rod is arranged in the gas pipe universal joint, and the plug is used for sealing the air outlet hole; a gas channel is formed in the middle of the gas nozzle and is in communication with the ventilation pipe, and an air flow passage is formed in the outer wall of the gas nozzle and is in communication with the gas channel;

[0009] When the gas pipe universal joint is retracted on the inner rod, a gap is formed between the plug and the air outlet hole, the air outlet hole is opened and is in communication with the gas channel through the air flow passage; when the gas pipe universal joint is in a natural state without force, the plug seals the air outlet hole.

[0010] Further preferably, the gas channel penetrates the inner rod from the end of the connecting head to the plug, and the outer wall of one end of the inner rod close to the plug is provided with the air flow passage in communication with the gas channel.

[0011] Further preferably, the air flow passage is provided as a plurality of air flow passages, and the plurality of air flow passages are distributed on the inner rod in a circumferential direction.

[0012] Further preferably, the connecting head comprises a connecting plate, the inner side of the trachea universal head end is provided with a ring groove for embedding the connecting plate, and the end of the connecting plate away from the inner rod is provided with a clamping block for connecting with the ventilation pipe, and the clamping block is arranged on the outer side of the airway port.

[0013] Further preferably, the inner rod is provided with a reduced diameter step in the middle part, and the diameter of the end of the inner rod close to the plug is smaller than the diameter of the end of the inner rod close to the connecting plate.

[0014] Further preferably, the plug is provided in a hemispherical shape, and the hemispherical surface of the plug is located at the end away from the inner rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses novel structure, convenient to use, install on the air outlet pipe of IVC cage frame, and be used to ventilate to the IVC cage box on the cage frame, realize the function of automatic ventilation of having cage box and automatic sealing of not having cage box, solve the problem of the traditional cage frame of no cage box also outlet.

[0017] The air nozzle of the utility model is suitable for the trachea universal head, and the clamping block of the bottom knob design can be fixed on the vertical pipe ventilation pipe conveniently and quickly and is not easy to fall off. When the cage box on the cage frame is taken down, the cage box air nozzle is automatically closed to prevent air flow overflow. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the whole structure schematic diagram of the air nozzle of the utility model.

[0019] Fig. 2 It is the cross section structure schematic diagram of the air nozzle of the utility model.

[0020] Fig. 3 It is the cross section structure schematic diagram of the trachea universal head and the air nozzle connection relation of the utility model.

[0021] Fig. 4 It is the structure schematic diagram of the air nozzle self-sealing piece and ventilation pipe, cage box connection relation of the utility model.

[0022] In the drawing, 1, ventilation pipe, 11, ventilation port, 2, cage box, 3, air nozzle, 31, connecting head, 311, connecting plate, 312, clamping block, 32, inner rod, 321, reduced diameter step, 33, plug, 34, airway, 35, air flow port, 4, trachea universal head, 41, air outlet hole, 42, ring groove. DETAILED DESCRIPTION

[0023] The utility model will be described in detail in connection with the drawings. The drawing is a simplified schematic diagram, and only the basic structure of the utility model is schematically shown, so it only shows the components related to the utility model.

[0024] Referring to Figs. 1 to 4 The utility model discloses a kind of air cock self-sealing components of IVC cage box, it is arranged between air pipe 1 and cage box 2, it includes air cock 3 and air pipe universal head 4, air pipe universal head 4 is sleeved on air cock 3 and can be telescopic, air cock 3 material is Abs+glass fiber open mould manufacturing, play skeleton effect, and and air pipe universal head 4 are matched to realize self-sealing, protect the air flow supply and air flow stability in pipe.Gas pipe universal head 4 is silica gel material, soft and telescopic.Gas pipe universal head 4 end portion is equipped with air outlet hole 41.

[0025] Air cock 3 includes connecting head 31, inner rod 32, plug 33 connected into one, connecting head 31 is used to connect with air pipe 1, inner rod 32 is arranged in air pipe universal head 4, plug 33 is used to seal air outlet hole 41;Air cock 3 middle is opened with the air passage 34 of air pipe 1 communication, air passage 34 is penetrated by connecting head 31 end portion inner rod 32 to plug 33 part, the outer wall of one end of inner rod 32 close to plug 33 is opened with the air flow through port 35 of air passage 34 penetration.Gas pipe universal head 4 is retracted on inner rod 32, plug 33 is separated from air outlet hole 41, gap is generated between two, air outlet hole 41 opens and is communicated with air passage 34 by air flow through port 35.Gas pipe universal head 4 is not forced natural state, plug 33 blocks air outlet hole 41.Preferably, air flow through port 35 is set as several, several air flow through port 35 is evenly distributed on inner rod 32, forms openwork mesh.

[0026] In the embodiment, air cock 3 is integrally injection molded, and the material is ABS+glass fiber;After CFD air flow simulation test, to meet the air supply while ensuring that when cage box 2 can be removed, air flow self-sealing function is realized, the stability of air flow in pipe is guaranteed.

[0027] The connecting head 31 comprises a connecting plate 311, and a ring groove 42 is arranged on the inner side of the end of the trachea universal head 4 and is used for embedding the connecting plate 311; the trachea universal head 4 is sleeved on the connecting plate 311 through the ring groove 42 to realize the sealed connection of the two. The connecting plate 311 is provided with a clamping block 312 used for being connected with the ventilation pipe 1 at the end away from the inner rod 32, and the clamping block 312 is arranged on the outer side of the port of the air duct 34. The clamping block 312 is arranged as two symmetrical outer L-shaped plates, the ventilation pipe 1 is provided with a ventilation port 11, and the two clamping blocks 312 are arranged so that the clamping blocks 312 can be rotatably and conveniently fixed on the ventilation pipe 1 and are not easy to fall off. The inner rod 32 is provided with a reduced diameter step 321 in the middle, and the diameter of the end of the inner rod 32 close to the plug 33 is smaller than the diameter of the end of the inner rod 32 close to the connecting plate 311. The design can increase the gap between the air nozzle 3 and the inner wall of the trachea universal head 4, increase the ventilation volume, and make the ventilation more smooth. The plug 33 is arranged as a semispherical shape, and the semispherical surface of the plug 33 is located at the end away from the inner rod 32.

[0028] The air nozzle 3 of the utility model is matched with the trachea universal head 4, the clamping block 312 designed with the bottom knob can be fixed on the vertical pipe ventilation pipe 1 conveniently and quickly, and is not easy to fall off. When the cage box 2 on the cage frame is taken down, the air nozzle 3 of the cage box 2 is automatically closed, and air flow overflow is prevented.

[0029] The implementation principle of the embodiment is that the silica gel trachea universal head 4 is soft and telescopic, is contracted under the force from the cage box 2, has space for air flow to flow into the cage box 2 after contraction, and restores the original state after the cage box 2 is taken away, so that the air nozzle is self-sealed and the air outlet is blocked to prevent air from flowing out.

[0030] The embodiments of the specific embodiment are the preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. An air nipple self-sealing assembly for an IVC cage, disposed between a vent tube and a cage, characterized by: The utility model relates to a gas nozzle and gas pipe universal head, the gas pipe universal head is sleeved on the gas nozzle and can be telescopic, and the end of the gas pipe universal head is provided with a gas outlet hole; The gas nozzle comprises an integrated connector, an inner rod and a plug, the connector is used for connecting with the air pipe, the inner rod is arranged in the gas pipe universal head, and the plug is used for sealing the gas outlet hole; a gas channel is formed in the middle of the gas nozzle and is communicated with the air pipe, and a gas flow passage is formed in the outer wall of the gas nozzle and is communicated with the gas channel; When the gas pipe universal head is retracted on the inner rod, a gap is formed between the plug and the gas outlet hole, the gas outlet hole is opened and communicated with the gas channel through the gas flow passage; when the gas pipe universal head is in a natural state without force, the plug seals the gas outlet hole.

2. The air-tight self-sealing assembly of an IVC cage according to claim 1, characterized in that: The gas channel is formed through the inner rod from the end of the connector to the plug, and the outer wall of the end of the inner rod close to the plug is provided with the gas flow passage communicated with the gas channel.

3. The air spout self-sealing assembly of an IVC cage according to claim 2, wherein: The gas flow passage is provided with a plurality of gas flow passages which are distributed on the inner rod in a circumferential direction.

4. The air-tight self-sealing assembly of an IVC cage's air inlet according to claim 3, characterized in that: The connector comprises a connecting plate, the inner side of the end of the gas pipe universal head is provided with a ring groove for embedding the connecting plate, the end of the connecting plate away from the inner rod is provided with a clamping block used for connecting with the air pipe, and the clamping block is arranged on the outer side of the gas channel port.

5. The air-tight self-sealing assembly of an IVC cage's air inlet according to claim 4, characterized in that: The inner rod is provided with a reduced diameter step in the middle, and the diameter of the end of the inner rod close to the plug is smaller than the diameter of the end of the inner rod close to the connecting plate.

6. The air-tight self-sealing assembly of an IVC cage's air inlet according to claim 1, characterized in that: The plug is provided with a semispherical shape, and the semispherical surface of the plug is located at the end away from the inner rod.

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