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61results about How to "Help the environment" patented technology

Environment-friendly precoated sand for high-strength castings and preparation method thereof

The invention relates to environment-friendly precoated sand for high-strength castings and a preparation method thereof. The precoated sand comprises the following raw materials of, in parts by weight, 100 parts of raw sand, 4-8 parts of a binder, 1-2 parts of a curing agent, 0.1-1 part of a lubricant, and 0.1-0.5 part of a refractory particle, wherein the raw sand is a mixture of silica sand andceramic foundry sand, and the binder is modified phenolic resin. According to the method, the precoated sand raw sand are designed, the phenolic resin is modified, the refractory particles are added,the modified phenolic resin and the mixture of the silica sand and the ceramic foundry sand are fully mixed, so that the effect of the binder is effectively exerted; the ferroferric oxide refractoryparticles are mixed into the mixture of the silica sand and the ceramic foundry sand, the problem that the casting size is changed due to expansion in the casting process is inhibited, the precoated sand is fully ensured to be used at a higher temperature, the precoated sand has higher strength and better liquidity, the shape of the sand core can be ensure to be complete and compact, so that the surface of an inner cavity of the casting is smooth and free of burrs.
Owner:广西兰科资源再生利用有限公司

Core body for preventing particles from sliding and preparation method thereof

InactiveCN111688307ASuppression of absorption characteristicsAvoid gel cloggingSynthetic resin layered productsLaminationFiber
The invention discloses a core body capable of preventing particles from sliding and a preparation method thereof. The core body comprises a core body surface layer made of a non-woven material, a super water absorbent layer made of SAP particles and a core body bottom layer made of a non-woven material; the core body is characterized in that the non-woven materials adopted by the core body surface layer and the core body bottom layer form transverse flow guide grooves used for diffusion through directional arrangement of fibers, or transverse flow guide grooves are formed in the surfaces of the non-woven materials; the super water absorbent layer is formed by laying the SAP particles or formed by laying SAP particles and wood pulp fibers in a mixed manner. The preparation method comprisesthe steps of preparation of the core body surface layer, preparation of the core body bottom layer, preparation of the super water absorbent layer, multi-layer compounding of the core body material and the like. The upper layer hairiness and the lower layer hairiness in the prepared core body effectively fix SAP and are prevented from sliding and accumulating, the hairiness plays a good role in water absorption and water guide, the phenomenon of gel blockage is avoided, and the final product is soft, comfortable and good in absorption performance.
Owner:DONGHUA UNIV

Municipal waste recycling pretreatment device

The invention discloses a municipal waste recycling pretreatment device, which comprises a pretreatment device, wherein the pretreatment device comprises a scattering box, the scattering box is internally provided with a sliding table in mirror image distribution, two ends of the scattering box are provided with first bearing holes distributed in an array mode, one side of the scattering box is provided with a scattering box supporting plate, the other side of the scattering box is provided with a scattering box supporting frame in mirror image distribution, the scattering box is internally provided with scattering rollers distributed in an array mode, one side of the scattering box is provided with a first servo motor for driving the scattering rollers to rotate, a uniform spreading box is further arranged below the scattering box, uniform spreading box supports distributed in an array mode are arranged below the uniform spreading box, a first conveying belt is arranged below the uniform spreading box supports, a cleaning treatment frame is arranged on the first conveying belt, and a second conveying belt is arranged below a briquetting mechanism. The municipal waste recycling pretreatment device is simple in structure, high in waste treatment efficiency, capable of effectively sorting useful iron metal in waste, beneficial to environmental protection, and capable of reducingsmoke dust generated by waste treatment, reducing harmful substances in the later period of waste treatment and reducing the labor intensity of operators at the same time.
Owner:四平市开利伟业机械设备制造有限公司

Preparation method of oxidized polyethylene wax

The invention discloses a preparation method of oxidized polyethylene wax. The preparation method comprises the following steps: adding a given amount of raw material polyethylene into a reaction kettle, introducing nitrogen to purge the oxygen, stirring, heating to facilitate the cleavage reaction, then cooling, discharging the material, heating the prepared polyethylene wax to a temperature greater than a wax melting point, stirring, introducing oxidant gas at a set gas flow rate, continuously heating to a needed reaction temperature, reacting for a given time, after the reaction is ended, cooling, discharging, and obtaining the oxidized polyethylene wax. The preparation method has the beneficial effects that the high density polyethylene resin, low density polyethylene resin or waste polyethylene plastics are used as a raw material, the raw material can be selected according to a use and the cost, the waste can be effectively utilized, and the environmental protection is facilitated; the oxygen-containing gas is directly introduced into the wax melt, so that the preparation method has the advantages of low cost, simple process and the like; and meanwhile, by controlling variousreaction conditions, the cross-linking reaction in the oxidation process can be reduced, so that the viscosity and acidic value of a product can be ensured to reach the standard.
Owner:昀联科技有限公司

Device for refining industrial salt from high-salinity wastewater

The invention discloses a device for refining industrial salt from high-salinity wastewater. The device comprises a raw water tank, and the raw water tank is communicated with an ozone oxidation tankthrough a first water pump; an outlet of the ozone oxidation tank is communicated with an ultrafiltration unit through a second water pump; a water outlet of the ultrafiltration unit is communicated with an ultra-filtration water production tank through a pipeline; the ultrafiltration water production tank is communicated with a first security filter through a third water pump; the first securityfilter is communicated with a first nanofiltration unit through a fourth water pump; a concentrated water outlet of the first nanofiltration unit is communicated with a first nanofiltration concentrated water tank through a pipeline; the first nanofiltration concentrated water tank is communicated with a second security filter through a fifth water pump; and the second security filter is communicated with a second nanofiltration unit through a sixth water pump. The device for refining the industrial salt from the high-salinity wastewater has the advantages that the capability and effect of refining the industrial salt are greatly improved, the utilization rate of the high-salinity wastewater is guaranteed, the enterprise wastewater treatment cost is effectively lowered, and environmental protection and industrial management of enterprises are facilitated.
Owner:山东蓝然环境科技有限公司

Anti-settling and energy-saving spraying structure for security inspection robot

The invention discloses an anti-settling and energy-saving spraying structure for a security inspection robot. The anti-settling and energy-saving spraying structure for the security inspection robotcomprises a robot outer shell, wherein a liquid medicine tank is arranged inside the robot outer shell, a stirring rod penetrates through the liquid medicine tank, a stirring blade is arranged outsidethe stirring rod, the lower end of the stirring rod stretches into the liquid medicine tank and is connected with the inner top end of the liquid medicine tank through a bearing, the upper end of thestirring rod is nested on the outer side of a twisted rod, the upper end of the twisted rod stretches into the left end of a connecting pipe, the connecting pipe is arranged in the robot outer shell,the upper end of a driving rod stretches into the right end of the connecting pipe, and the middle of the driving rod is rotationally connected with the left end of a lever. According to the anti-settling and energy-saving spraying structure for the security inspection robot, liquid medicine can be prevented from settling and reducing the medicine effect due to the fact that liquid medicine is not used for a long time, the energy consumption when the liquid medicine is sprayed can be reduced conveniently, energy conservation and emission reduction can be facilitated, and environmental protection is facilitated.
Owner:台州路桥朝槿自动化科技有限公司

Kitchen waste hydrogen-rich energy machine

The invention discloses a kitchen waste hydrogen-rich energy machine. The kitchen waste hydrogen-rich energy machine comprises a hot water boiler (1), a kitchen waste processor main body (2), a hot water tank (3) and a hydrogen-rich generating device (4), wherein the kitchen waste processor main body (2) comprises a compression finishing section (21), a crushing section (22), a stirring heating section (23) and a dewatering section (24), a stirrer (26) is arranged in a stirring cylinder (27) of the stirring heating section (23), a heating water jacket (28) is arranged outside the stirring cylinder (27), the hot water tank (3) supplies water to the heating water jacket (28) through a hot water circulating pump (35) via a hot water supply pipeline (30), water in the heating water jacket (28)flows back into the hot water tank (3) through a hot water return pump (36) via a water return line (40), slurry kitchen waste treated by the dehydration section (24) is pumped to a slurry ejector (5) through a slurry pump (6) via a slurry pipeline (60) and is ejected into a combustion chamber of the hot water boiler (1) to be combusted as biomass fuel, and hydrogen is fed into the combustion chamber of the hot water boiler (1) by a hydrogen-rich generating device (4) to support combustion. The kitchen waste hydrogen-rich energy machine can be widely applied to the energy combustion field.
Owner:慧生能源科技有限公司
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