55results about "Poison protection" patented technology

The invention relates to a process for producing respirable air comprising the following stages: treatment of compressed air comprising an air-drying operation rehumidification of the treated dry air.

According to the invention, the rehumidification stage of the treated dry air comprises an operation of controlled distribution of the treated dry air on the one hand in a rehumidification line (24), and on the other hand in a dry line (22).

The invention also relates to an installation (1) for utilising such a process. Application to the area of nuclear installation dismantling.

A high-rise building has a stairwell, an air supply shaft, inlet openings connecting the air supply shaft to the stairwell, and a pressure system for keeping the stairwell free from smoke. The stairwell is vertically divided into several partial spaces. The separation is performed by at least one partition. Each partition has a door enabling a passage from one partial space of the stairwell into an adjacent partial space.

A breathing air production and filtration system has an air generation assembly and a distribution assembly. The generation assembly has a compressor and filtration components to generate breathing air. The distribution assembly has collection pots with multiple connections for manifolds. For their part, the manifolds have multiple connectors for the respirators of end users. The system uses a monitoring control system with various wireless sensors to monitor operation of the system and the quality of breathing air produced. These sensors include an in-line sensor detecting constituents or contaminants in the breathing air. The sensors also include pressure, temperature, and flow sensors monitoring the operation of the system. An automatic switchover is provided for switching the system to a back-up supply of high-pressure reserve air if needed.

The present invention relates to a sealed and ventilated receptacle for storing equipment, such as firefighter turnout gear, that generally includes a base, at least one sidewall extending from the base, and a top wall that covers the opposite end of the sidewall. A sealable door may be positioned on the sidewall to access the inside of the receptacle and to prevent any contaminants from exiting the receptacle. The receptacle may also include an intake fan and exhaust fan that are each connected to a duct for providing fresh air to and removing contaminated air from the inside of the receptacle. The receptacle may further include a temperature control unit for regulating the temperature inside of the receptacle. Additionally, a hook for hanging a firefighter coat, trousers, or other items may also be included on the inside of the receptacle.

The invention relates to the technical field of epidemic-prevention medical devices, in particular to an epidemic-prevention medical helmet. The epidemic-prevention medical helmet comprises a helmet main body, the helmet main body is provided with a perspective window located on the front side and used for showing human faces, sound transmission windows located at two side portions, an air inlet located in the upper portion and a wearing mouth and an air outlet which are located in the lower portion and used for stretching in of human heads, wherein the perspective window is internally provided with a transparent panel, the air inlet is provided with an air-inlet air fan and is arranged to face the transparent panel, the air outlet is provided with an air-outlet air fan, the sound transmission windows, the air inlet and the air outlet are all provided with filter pieces, and the wearing mouth is provided with a seal sleeve. According to the epidemic-prevention medical helmet, by meansof such arrangement, user facial expressions can be seen through the transparent panel, external sounds can be heard clearly through the sound transmission windows, communication of people is facilitated, furthermore, fresh air circulation can be formed in front of users, breathing and ventilation are facilitated, and the epidemic-prevention medical helmet is tight in seal and good in epidemic-prevention effect.

The invention provides a portable air filtering device which comprises a backpack and a treater, wherein the treater comprises a box body and a cover plate; the cover plates covers the box body so as to combine the box body and the cover plate as a square of which one side surface is opened; the internal space of the box body is sequentially divided into a treating area and an air storage area from the opening in the side surface from outside to inside; a detachable filtering plate, a positive electrode plate and a negative electrode plate are sequentially inserted into the treating area from outside to inside; air outlet holes are formed in the side wall of the air storage area in the box body so as to communicate the air storage area with a fan which is tightly adhered to the side surface of the box body; the fan is opened upwards and is connected with an air cylinder; a soft air conveying tube is connected with the top opening of the air cylinder through a first connector; a battery box is fixed at the bottom of the box body; the battery box is connected with the fan and an electrostatic generator to supply power through circuits; the electrostatic generator is connected with the positive electrode plate and the negative electrode plate and is used for supplying high-voltage static electricity. The portable air filtering device is small in size, easy to carry over and light in weight, and can well replace a mouth-muffle for effectively reducing the influence of air pollution to bodies when people live at home or go out.

A mining air supply dust mask comprises a pneumatic connector, a dust filter, a valve, an air ducting hose, a mask main body, etc. The mask is suitable for being worn by fixed point operators such as heading machine drivers, command staff, pneumatic drill operators, or anchoring and shotcreting workers of a press-in type ventilation heading operation face of a mine. The pneumatic connector is installed on an air duct wall of a pressed-in air supply duct, and directs a part of fresh air current in the air duct into the air ducting hose in a state of being connected with the air ducting hose. The fresh air current passes through the dust filter, the valve, and the air inlet hoses of the mask main body and is finally directed to a respiratory cavity of the mask body to be supplied to the user. Two rows of air outlet apertures are formed in the lower part of the mask body for exhausting. While wearing the mining air supply dust mask, the operator only needs to appropriately adjust the opening amount of the valve to keep an appropriate positive pressure in the respiratory cavity of the mask, so as to prevent the outside air containing dust from entering the respiratory cavity of the mask, thereby efficiently protect health of the operator. The mask does not need compressed air and electric power, is safe and reliable, and does not need a pressure reducing valve or an oil filter. The mask has a simple structure, superior practicality and ideal dustproof effects and is convenient to operate.

A breathable air safety system and method having an air storage sub-system is disclosed. In one embodiment, a safety system of a structure includes a supply unit of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the building structure, a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure, and an air storage sub-system to provide an additional supply of air to the building structure in addition to the source of compressed air.

The invention relates to a positive pressure type fire-fighting air breathing apparatus. The positive pressure type fire-fighting air breathing apparatus comprises an oxygen supply bottle (4), an oxygen catheter (3) and a hood (1). The oxygen supply bottle (4) is connected with the hood (1) through the oxygen catheter (3), and a thermometer (2) is clamped on the oxygen catheter (3) on the lower portion of the hood (1). Due to the fact that the thermometer (2) is arranged, a fireman can know the environment temperature condition of the place where the fireman is located at any moment in the process of executing a fire-fighting task, and the fireman can know and master the environment condition of the fire-fighting place more deeply. The fire-fighting efficiency is improved, and meanwhile a certain role in protecting the personal safety of the fireman can be played.

There is provided an ear cup including a housing containing a filter assembly and a motor-driven impeller for creating an airflow through the filter assembly, the housing including an air outlet downstream from the filter assembly for emitting the filtered airflow from the housing. The ear cup further includes an acoustic driver mounted to the housing, a reference internal noise disposed within the housing and a reference ambient noise mounted to the housing. The ear cup further includes active noise control circuitry that is configured to simultaneously use both a signal provided by the reference internal noise and the signal provided by the reference ambient noise to operate the acoustic driver.

Disclosed is a system for supplying breathing air to a work space, which adopts a triple air-supply structure including a main air-supply unit for compressing, drying and filtering air supplied from the atmosphere so that breathing air is supplied to the work space, a plant air-supply unit for supplying industrial air used in a process plant to the work space, and an emergency air-supply unit for supplying breathing air to the work space in an emergency, wherein the operation of respective air-supply units is organically controlled, thus increasing the reliability of the air supply.

Provided is a building. A gas supply pipeline is arranged in the building structure, gas outlets of the gas supply pipeline are formed at proper positions of floors, and a gas inlet of the gas supply pipeline extends to the outer side of the building to be communicated with gas outside the building.

The invention discloses a technology for emergency treatment of environmental pollution caused by fires and leakage. The technology comprises a machine body; an auxiliary power cavity is arranged in the machine body; a moving cavity is disposed in the bottom side of the auxiliary power cavity; a belt hole is formed in the right side wall of the moving cavity; a cleaning cavity is disposed in the right side wall of the belt hole; the moving cavity communicates with the cleaning cavity; a diffusion cavity is disposed in the right side wall of the cleaning cavity; a restoration cavity is disposedin the bottom side wall of the cleaning cavity; a main power cavity is disposed in the top side of the cleaning cavity; and a storing cavity is disposed in the top side of the main power cavity. A main motor is started to drive a first power shaft so as to drive a first bevel gear, a moving shaft and a sliding block to rotate, then a baffle moves backwards, meanwhile sand in the storing cavity flows out of a sand discharging hole, the baffle leaves a rear spring, diffusion is prevented so as to avoid great harm, meanwhile the sand stored in a device is released along with opening of a partition board so as to cover leaked harmful liquid, and burning and diffusion of the liquid are prevented.

The invention discloses a fire-escape respirator comprising an air inlet, a filter device, a cover body, an eyeshade, a mask, a head band and a fastener, the air inlet is arranged in the front end of the cover body, the filter device is arranged in the cover body, the eyeshade is arranged on the upper portion of the mask, the head band is connected with two ends of the mask, and the ends of the head band are connected by the fastener. The fire-escape respirator is complete in concept, reasonable in structure, capable of filtering high-temperature carbon black particles in fire smoke and adsorbing and purifying CO and CO2 in the smoke and widely applicable to various closed or semi-closed fire-prone places.