33results about How to "Reduce smoke density" patented technology

The invention discloses an intelligent horizontal moxibustion treatment bed. The intelligent horizontal moxibustion treatment bed comprises a bed body (1), a chamber cover (10) and moxibustion modules (1-3), wherein the moxibustion modules (1-3) are respectively a head moxibustion module (12), a chest moxibustion module (3), a leg upper-surface moxibustion module (4), a thigh outer-side moxibustion module (5), a shank outer-side moxibustion module (6) and a sole moxibustion module (15), wherein each moxibustion module (1-3) is composed of a fixation plate (18) and a transverse slide mechanism; concave plates (23) are fixed on the lower surfaces of slide bases (25) through threaded shafts (22) and guide shafts (24); rotating disc driving motors (36) are installed in the grooves of the concave plates (23), and the rotating shafts of the rotating disc driving motors (36) are fixedly connected with the centers of rotating discs (37); and the edge positions of the rotating discs (37) are provided with moxibustion needles (20). According to the invention, improvements are made based on prior arts, the accuracy between acupuncture points and the moxibustion needles during moxibustion treatment is improved, and a suspension moxibustion principle is additionally used.

The invention discloses a compressed oxygen self-rescuer for an underground coal mine. The compressed oxygen self-rescuer comprises a self-rescuer body, wherein an oxygen storage cavity is formed in the side wall of the self-rescuer body; an air bag is fixedly connected to the upper end of the self-rescuer body; a respirator communicating with the interior of the air bag is installed at the upperend of the air bag; a water storage tank is formed in the side wall of the self-rescuer body; a first circular groove is formed in the side wall of the self-rescuer body; an air inlet pipe communicates between the first circular groove and the oxygen storage cavity; an air outlet pipe communicates between the first circular groove and the air bag; and a control valve is installed in an air outlet.According to the compressed oxygen self-rescuer, water flows into an exhaust pipe to be fully combined with smoke and then is discharged, the concentration of smoke nearby an escape person wearing the self-rescuer can be greatly reduced, the escape person can clearly see the nearby road condition and the fire condition, and therefore the survival possibility of the escape person is increased; mist water is sprayed to the body of a wearer to replace water loss in the human body, the escape person can be prevented from being dehydrated and died, and therefore the self-rescue performance of thedevice is improved.

The invention relates to a high-reliability environmental-friendly aluminium alloy power cable which comprises an alloy conductor, a lapped covering, an insulating layer, a shielding lapped covering, a filling layer, a lining lapped covering, an armor layer and an outer sheath, wherein the lapped covering is lapped outside the alloy conductor; the insulating layer is extruded outside the lapped covering; the shielding lapped covering is lapped outside the insulating layer; the filling layer coats the shielding lapped covering; the lining lapped covering is lapped outside the filling layer; the armor layer coats the lining lapped covering; and the outer sheath is extruded outside the armor layer. The high-reliability environmental-friendly aluminium alloy power cable provided by the invention adopts special multilayer structural design, a novel cable material and the specially-made filling layer. The high-reliability environmental-friendly aluminium alloy power cable provided by the invention has the prominent characteristics of non halogen and low smoke and low halogen and low smoke, and thus, in the case of a fire, a spreading speed is low, smoke concentration is low, visibility is high, and a release volume of harmful gas is small, so that the high-reliability environmental-friendly aluminium alloy power cable is convenient for people to evacuate. Combustion gas is low in corrosivity, and damage to instrument equipment is also avoided. Aging resistance, ultraviolet resistance and other irradiation properties of a material of the cable provided by the invention are greatly improved, so that the service life of the cable is prolonged.

The invention relates to a low smoke zero halogen composite material with functions of water resistance, fire protection and flame retardance. The material comprises the following raw materials in percentage by weight: 70-80 polyethylene (PE) resin, 10-20 plasticizer, 2-5 stabilizing agent, 2-3 lubricant, 5-10 flame retardant, 1-2 PE (Polyethylene) foaming agent, 2-3 hydrophobing agent, 10-20 carbonizing agent, 1-3 elastomer (TPE) and 10-20 PE synthesizing agent. The composite material can be produced to corresponding products or functional structure layers of the products through the extrusion moulding, and is mainly applied in the products or the functional structure layers, such as outer sheath layers of electric cables and electric wires, floors, wall plates, ceilings, fire resisting shutters and the like. The composite material has the advantages of excellent water resistance, fire protection, heat insulation, smoke prevention, ageing resistance, corrosion resistance and the like.

The invention relates to a fire prevention cabinet which comprises a cabinet body and a cabinet door, wherein the cabinet door is provided with a fire alarm; the cabinet body is internally provided with a suction ventilator; the suction ventilator is electrically connected with the fire alarm; when the fire alarm gives an alarm, the suction ventilator automatically runs. The fire prevention cabinet is convenient to use and easy to operate; the fire prevention cabinet is provided with the suction ventilator, thus being capable of absorbing the dense smoke produced by a fire, purifying the air, reducing the temperature of the ambient air and controlling the fire behavior.

The invention discloses a smoke abatement cooling device. A primary smoke abatement cooling device comprises a smoke inlet, a smoke abatement cooling chamber, a jet bubbling reactor and a filter screen. The right side of the smoke abatement cooling chamber is provided with the smoke inlet, the lower side of the smoke abatement cooling chamber is provided with the jet bubbling reactor, and the leftside of the smoke abatement cooling chamber is provided with the multi-layer filter screen; a secondary cooling device comprises a flow equalizing chamber and secondary cooling spiral finned tube coolers, wherein the flow equalizing chamber is arranged above the secondary smoke abatement cooling device, and the multiple secondary cooling spiral finned tube coolers are uniformly arranged below theflow equalizing chamber. A chemical reaction and adsorption method and a two-stage water retaining device are adopted for primary treatment of 500-600 DEG C high temperature smoke, after primary treatment, the outlet temperature of the smoke abatement cooling device is smaller than or equal to 70 DEG C, secondly, secondary treatment is carried out on 70 DEG C smoke gas, the purposes of comprehensively reducing the smoke concentration of a diesel engine and reducing the temperature to be smaller than or equal to 35 DEG C can be achieved after secondary treatment, and the requirements of important national hidden military facilities are met.

The invention relates to the field of expanded polyethylene, and provides a fireproof expanded polyethylene material. The fireproof expanded polyethylene material aims at solving the problem that theshock absorption and shock resistance of the expanded polyethylene material are easily influenced by adding a flame retardant agent into the expanded polyethylene material, and comprises, by weight, the following components: 30-45 parts of high pressure polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 5-10 parts of antimony trioxide, 15-25 parts of decabromodiphenyl ethane, 30-45 parts of aluminum hydroxide, 10-18 parts of azodicarbonamide, 0.2-0.8 part of a crosslinking agent DCP, 0.4-1 part of zinc oxide and 0.1-0.5 part of stearic acid. The invention discloses a preparation method of the fireproof expanded polyethylene material. The method comprises the following steps of: S1, banburying; S2, carrying out open milling; S3, carrying out primary foaming; and S4, carrying outsecondary foaming. Antimony trioxide, decabromodiphenylethane and aluminum hydroxide are mixed according to a certain proportion and are added into the expanded polyethylene as flame retardant agentsto prepare the fireproof expanded polyethylene material, so that the fire resistance of the fireproof expanded polyethylene material is improved, and meanwhile the fireproof expanded polyethylene material has good shock absorption and shock resistance.

The invention belongs to the technical field of polypropylene foam materials, and discloses a low-smoke halogen-free flame-retardant polypropylene foam material and a preparation method thereof. The material is prepared from the following raw materials: 40 to 60 parts of polypropylene resin, 10 to 20 parts of linear low-density polyethylene, 5 to 25 parts of compatilizer, 8 to 12 parts of caprolactone modified methacrylate, 20 to 30 parts of halogen-free flame retardant, 5 to 10 parts of smoke suppressant, 5 to 10 parts of foaming agent, 0.5 to 3 parts of antioxidant, 0.5 to 1 part of filler, 2 to 5 parts of modified glass fiber, 0.5 to 2 parts of color master batch and 0.8 to 3 parts of sensitizer. According to the invention, ester groups are grafted on the surface of polypropylene, polar groups are increased, and two compatilizers are compounded, so that the dispersity of the flame retardant in polypropylene is improved, and the flame retardant property is enhanced. By using the linear low-density polyethylene and the modified glass fiber, the melt strength of the polypropylene foam material is improved, the mechanical property is improved, and the application range is widened.

The invention relates to a smoke-fire guide and disaster reduction system for a building fire and effectively solves the problems that smoke is dense, flames are large, escaping is difficult, firefighters often provides point rescuing and fire fighting time is short when the building fire occurs. According to the technical scheme, the smoke-fire guide and disaster reduction system comprises a building. A smoke-fire guide cover is disposed right above each door and each window of the building, the smoke-fire guide cover is as wide as the door and the window and 50-60cm in length and height, smoke-flame guide passages are arranged on the left and right sides of the smoke-fire guide cover, and the smoke-flame guide passages extend out of the top of the building and are communicated with the smoke-fire guide cover. By the arrangement, the smoke-fire guide and disaster reduction system novel and unique in structure has the advantages that smoke concentration in passageways can be further reduced when the fire occurs, good escaping passages are provided, more time and better rescuing environments are provided for fire rescue, and good social and economical benefits are achieved.

The invention discloses an intelligent monitoring and alarm device for an urban compositive pipe gallery. The device comprises a base layer, box bodies are arranged on the base layer in a penetratingmode, the bottom parts in the box bodies are penetrated, the side wall of one end in the base layer is detachably connected with a bottom plate, a housing is fixed to one side of the bottom plate, a second alarm is fixed to one side of the housing, a power mechanism is arranged in the housing, and two rotating shafts are arranged on the power mechanism. According to the device, the shortcoming ofimmobilization of existing monitoring equipment can be changed, the monitoring range of a single monitoring assembly can be increased, the monitoring assembly is convenient to fix, workers are facilitated to adjust and control according to the actual situation, and at the same time, ventilation and filtration can be carried out, so that gas in the pipe gallery exchanges efficiently with the outside, the fluidity of the gas in the pipe gallery is ensured, the gas is convenient to isolate from the outside according to the situation, equipment in the pipe gallery is protected, the workers are facilitated to quickly find the location of an accident, the rescue efficiency is improved, and the equipment in the pipe gallery is better protected.

The invention relates to a flame retardant rubber. The flame retardant rubber comprises the following raw materials in parts by weight: 50 to 80 parts of chlorosulfonated polyethylene, 30 to 50 parts of polyacrylate rubber, 40 to 70 parts of butyl rubber, 5 to 15 parts of ethylene-vinyl acetate, 1 to 5 parts of age resister, 15 to 30 parts of aluminum hydroxide, 1 to 10 parts of plasticizer, 10 to 20 parts of calcium carbonate, 10 to 15 parts of dibutyl phthalate, and 1 to 5 parts of 2-mercaptan imidazoline. The flame retardant rubber has a good flame retardant effect, and can lower down the concentration of smoke and absorb hydrogen chloride produced during combustion, in order to avoid damage to a human body.

A domestic stove is used for warming, boiling water and cooking and comprises a square outer barrel body, a sealing cover and a bottom sealing plate. A bent plate is arranged in the outer barrel body, the outer barrel body is divided into a stove body placing cavity and a smoke return airway by the bent plate, the cross section of the stove body placing cavity is in a square shape, the cross section of the smoke return airway is in an L shape, the certain distance is reversed between the lower end of the bent plate and the bottom sealing plate, a stove body base where a stove grate and an ash bucket are assembled is arranged at the lower portion of the stove body placing cavity, round spigots are respectively formed in the stove body base and the stove grate, a stove body casing and a stove jacket are assembled through the spigots, an air sleeve with an air inlet is arranged at the upper end of the stove jacket, the upper end of the stove body casing is matched with the protruded edge of the upper portion of the air sleeve, a stove cover and a smokestack base are arranged on the sealing cover respectively at the position of the stove body placing cavity and the position of the smoke return airway, and an inner stove jacket is positioned in the stove jacket. The domestic stove is capable of saving energy and protecting the environment, high in warming efficiency, water boiling efficiency and cooking efficiency and suitable for combusting firewood, bulk coal and honeycomb briquette. Meanwhile, a chimney and a stove body are integrally designed and packed, so that the domestic stove is convenient to use, transport and store.

The invention provides a fire safety early warning device which comprises a mounting frame, an output port is formed in the top of the mounting frame, the bottom of the mounting frame is in a hollow state, a first exhaust pipe is fixedly inserted into the mounting frame, a first fan is fixedly mounted at the bottom of the first exhaust pipe, and a smoke monitoring head is rotatably mounted at a spoke at the bottom of the first fan. Under the action of the rubber curtain, after the rubber curtain is unfolded along the end opening, a circular-truncated-cone-shaped air inducing cover is formed, air is guided, compared with the prior art, air with dust penetrates through the sensing probe through the air suction effect of the first fan, and compared with slow diffusion of the dust air, the monitoring efficiency is higher; under the action of a second fan and a rubber curtain, gas with dust is exhausted to the outside through strong air draft, the smoke concentration in a fire room is reduced, and compared with a mode of extinguishing fire only through water spraying, guarantee is more effectively provided for the personal safety of trapped persons.

The invention relates to a security control system. The system comprises an information collection module, a central processing module, a control module, an alarm module, a client and a communicationmodule; the information collection module communicates with the central processing module and is used to collect information; the information collection module comprises an infrared human body induction unit, a camera, a sound pickup, a door and window sensor and a smoke monitoring unit; the central processing module generates a first control signal and/or a second control signal according to information collected by the information collection module; the control module communicates with the central processing module, and is used to receive the first control signal and execute corresponding operation according to the first control signal; the alarm module communicates with the central processing module, and is used to receive the second control signal and raises the alarm after receiving the second control signal; the client communicates with the central processing module, and is used to receive the second control signal; and the central processing module is in network real-time communication with an external security monitoring center via the communication module.

The invention discloses a fire engineering smoke exhaust and ventilation system. The fire engineering smoke exhaust and ventilation system comprises a structure body, the structure body comprises a building of a multi-layer structure, an air supply device is arranged on one side of the building, and an air draft device is arranged on the other side of the building; each floor of the building is provided with a smoke sensor; the air supply device comprises an induced draft fan, a main air supply pipe is arranged on one side of the induced draft fan, and a plurality of sets of branch air supply pipes are arranged on one side of the main air supply pipe; the air draft device comprises a smoke exhaust channel, and a plurality of sets of smoke exhaust pipelines are arranged on one side of the smoke exhaust channel; and a dustproof device is arranged at the top of the smoke exhaust channel. By arranging the air supply device and the air draft device, when a fire occurs in the building, air containing dense smoke in the building is pumped out through the air draft device, meanwhile, clean fresh air is conveyed into the building through the air supply device, so that the smoke concentration of a fire scene is reduced, more survival opportunities are provided for escapers and rescuers, and life and property safety is facilitated.