# US 2014/0190710 A1 · Inner Cylinder of Explosion-Venting-Type Aerosol Fire Extinguishing Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190710 A1 - Document ID: US20140190710A1 - Status: Published application - Kind: A1 - Application number: 14/239,358 - Filed: 2012-08-15 - Published: 2014-07-10 - Earliest claimed: 2011-08-16 - Assignees: Xi'an J&R Fire Fighting Equipment Co., Ltd. - Inventors: Jian Qiang; Zhengjun Lei - Web page: https://patentgrep.com/patent/US20140190710A1 ## CPC - A62C 19/00: Hand fire-extinguishers in which the extinguishing substance is expelled by an explosion; Exploding containers thrown into the fire - A62C 13/22: with incendiary substances producing pressure gas - A62C 5/006: {Extinguishants produced by combustion} - A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10) ## Abstract The present disclosure relates to an inner cylinder of an explosion-venting-type aerosol fire extinguishing device, including a cylinder body (3) and a cylinder cover component (4) arranged on one end of the cylinder body (3), and an explosion-venting device arranged on the cylinder body (3). The explosion-venting device includes a friction layer (11), a connecting rod (12), a guiding unit (13), and a limiting device (14). The connecting rod (12) are connected with the cylinder cover component (4). The friction layer (11) is provided between the connecting rod (12) and the cylinder body (3). The friction layer (11) provides a frictional resistance and a buffering force for the connecting rod (12) when the connecting rod (12) is displaced, under the guidance of the guiding unit (13), along a direction that a hot air stream of the cylinder body (3) is jetting towards. The guiding unit (13) is a device capable of providing guidance for the connecting rod (12) when the connecting rod (12) is moving. The limiting device (14), the cylinder cover component (4), and the connecting rod (12) are fixedly connected. The limiting device (14) limits the connecting rod (12) when an extremity thereof slides to the cylinder cover component (4). The present disclosure uses primarily the movement and limiting of the explosion-venting device to consume kinetic energy generated by deflagration, thus achieving the goal of safe and effective explosion ventilation, and preventing a grain (7) from causing injuries and damages when deflagrated. ## Claims ### Claim 1 An inner cylinder of an explosion-venting-type aerosol fire extinguishing device, comprising: a cylinder body and a cylinder cover component arranged on one end of the cylinder body, wherein an explosion-venting device is also arranged on the cylinder body; the explosion-venting device comprises: a friction layer, a connecting rod, a guiding unit, and a limiting device; the connecting rod are connected with the cylinder cover component; the friction layer is provided between the connecting rod and the cylinder body; the friction layer provides a frictional resistance and a buffering force for the connecting rod when the connecting rod is displaced, under the guidance of the guiding unit, along a direction towards which a hot air stream of the cylinder body is jetting; the guiding unit is a device capable of providing guidance for the connecting rod when the connecting rod is moving; the limiting device is a device capable of fixing the connecting rod and capable of limiting the connecting rod when an extremity of the connecting rod slides to the cylinder cover component. ### Claim 2 (depends on 1) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 1, wherein the guiding unit is a guiding ring fixedly connected with the connecting rod, or a guiding groove provided on an outer wall of the cylinder body and capable of making the connecting rod slide axially along the guiding groove; the limiting device comprises a flanging fixedly connected with the cylinder body and a clamping claw for fixing the connecting rod; a buffer is further arranged between the flanging and the guiding ring. ### Claim 3 (depends on 2) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 2, wherein the flanging and the cylinder body are integrated. ### Claim 4 (depends on 1) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 1, wherein the connecting rod is fixedly connected with the cylinder cover component or integrated with the cylinder cover component. ### Claim 5 (depends on 4) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 4, wherein the displacement of the connecting rod is ranged from 30 mm to 80 mm. ### Claim 6 (depends on 5) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 5, wherein a spout of the cylinder cover component is sealed by a rubber plug. ### Claim 7 (depends on 6) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 6, wherein a sealing ring is arranged on the junction of the cylinder cover component and the cylinder body; the section of the sealing ring is circular. ### Claim 8 (depends on 2) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 2, wherein the connecting rod is fixedly connected with the cylinder cover component or integrated with the cylinder cover component. ### Claim 9 (depends on 3) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 3, wherein the connecting rod is fixedly connected with the cylinder cover component or integrated with the cylinder cover component. ### Claim 10 (depends on 8) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 8, wherein the displacement of the connecting rod is ranged from 30 mm to 80 mm. ### Claim 11 (depends on 10) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 10, wherein a spout of the cylinder cover component is sealed by a rubber plug. ### Claim 12 (depends on 11) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 11, wherein a sealing ring (9) is arranged on the junction of the cylinder cover component and the cylinder body; the section of the sealing ring is circular. ### Claim 13 (depends on 9) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 9, wherein the displacement of the connecting rod is ranged from 30 mm to 80 mm. ### Claim 14 (depends on 13) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 13, wherein a spout of the cylinder cover component is sealed by a rubber plug. ### Claim 15 (depends on 14) The inner cylinder of the explosion-venting-type aerosol fire extinguishing device according to claim 14, wherein a sealing ring is arranged on the junction of the cylinder cover component and the cylinder body (3); the section of the sealing ring is circular.