5results about How to "Extended burn time" patented technology

A firewood-saving stove comprises a stove body, a stove pipe is arranged in the stove body, a plurality of gasification through holes are formed in the wall above the stove pipe, a fire grate and an ash box are sequentially arranged at the lower end of the stove pipe, and an integral stove bottom panel is arranged at the lower end of the stove body and used for sealing the stove body. Through holes with straight edges are formed in the left position, the right position and the rear position of the integral furnace bottom panel, and the through holes are communicated with a cavity between the furnace body and the furnace pipe; a baffle plate is arranged at the straight edge of the through hole and is used for limiting the ash box; a plurality of annular grooves are pressed in the center of the whole furnace bottom panel surrounded by the through holes, a plurality of annular cavities are formed between the annular grooves and the outer bottom face of an ash box placed on the whole furnace bottom panel, and a gap is reserved between the upper end of the ash box and the fire grate. According to the utility model, the integral furnace bottom panel is welded with the furnace body, so that the primary air inlet quantity flowing into the fire grate and the secondary air inlet quantity flowing above the furnace pipe can be more accurately and effectively controlled according to the opening and closing size of the ash box, the combustion is sufficient, the pollution to the environment is reduced, and the operation environment of cooking personnel is better.

This invention provides a biomass fuel and its preparation method, belonging to the field of waste utilization technology. This invention mixes different waste materials to prepare biomass raw materials, and simultaneously utilizes microbial strains to transform the organic flame retardants contained in the waste raw materials into new flammable agents through biochemical reactions. The prepared biomass fuel has high calorific value, low smoke and dust, and excellent combustion performance, making rational use of various waste materials, and is environmentally friendly, efficient, and energy-saving. The results of the embodiments show that the biomass fuel prepared by this invention has a calorific value of 35.6 MJ / kg, a calorific value of 4100 cal / g, a combustion efficiency of 99.1%, and low smoke and dust.

The invention relates to the technical field of transformers, and discloses a power electrical transformer with a lightning protection function, the power electrical transformer comprises a transformer body, and a lightning rod is mounted in the middle of the top of the transformer body; heat dissipation assemblies used for assisting cooling are installed on the inner walls of the two sides of the transformer body, each heat dissipation assembly comprises a heat dissipation fin plate and a heat dissipation box, the heat dissipation boxes are installed on the inner walls of the two sides of the transformer body, and the heat dissipation fin plates are installed on the sides, away from the transformer body, of the heat dissipation boxes in a linear arrangement mode; a fan for dissipating heat through wind power is installed on one side of the heat dissipation box, and a cooling assembly for cooling through liquid cooling is installed in the heat dissipation box. By means of the flame-retardant assembly and the blocking assembly, the oxygen content in the transformer body can be reduced, the fire extinguishing effect is affected, arc extinguishing can be conducted through impact of sulfur hexafluoride gas on electric arcs, and it is avoided that combustion of the transformer body is aggravated due to arc discharge, and larger loss is caused.

The utility model relates to a kind of secondary combustion chamber for solid waste treatment, including shell, the bottom of shell is equipped with air inlet, top is equipped with air outlet, shell bottom is equipped with burner, shell bottom end outside is also equipped with closed loop wind device, closed loop wind device is used to the direction of the shell radial direction in the shell for air intake, to make flue gas spiral flow from the air inlet to the air outlet;Closed loop wind device includes two groups of air intake components respectively distributed in the shell two sides, air intake component includes main pipe and the multiple branch pipes connected on main pipe, branch pipe one end is communicated to the shell, the other end is closed.The utility model increases closed loop wind device, the combustion time of original combustion track is increased from 2.8 seconds to 3.8 seconds, can effectively increase combustion time, reduce the detonation phenomenon caused by too short combustion time, avoid producing CO flue gas overproof, can reduce the risk of flue gas overproof.

The hollow spiral incense stick with a long burning time described in this utility model is characterized by comprising a hollow spiral incense stick body extending downwards in a spiral shape, a base connected to the lower end of the hollow spiral incense stick body, and an insert rod, the upper end of which extends into the base and the lower end of which extends out of the base. This utility model eliminates the need for breaking the incense sticks apart during use, reducing unnecessary waste of mosquito coils. It also boasts a long burning time, is safe to use, and the hollow structure effectively reduces drying time and the amount of bamboo sticks used, significantly lowering production costs.