33results about How to "Reduced oxygen uptake" patented technology

The invention discloses a preparation method of a rare earth complex crystal boundary modification sintered neodymium-iron-boron magnetic body. The preparation method comprises the following steps of: preparing neodymium-iron-boron alloy particles, smashing the neodymium-iron-boron alloy particles into powder and injecting an antioxidant; ejecting mixed liquid of a rare earth complex and petroleum into neodymium-iron-boron powder in a spraying manner and mixing uniformly; and pressing the mixture into a blank magnetic body in magnetic aligning and sintering. In the preparation method, the mixture of the rare earth complex and the petroleum is added in the spraying manner, so that contact of the particles with oxygen can be effectively prevented, the oxygen absorption in the magnetic body preparing process is lowered, and the magnetic performance of the sintered magnetic body is enhanced. The rare earth complex is added and a rare earth product left by the decomposition of the sintered rare earth complex is mainly positioned at a crystal boundary, so that the prepared sintered neodymium-iron-boron magnetic body has a higher coercive force value and a lower temperature coefficient compared with the conventional sintered neodymium-iron-boron magnetic body. Moreover, the preparation method has a simple process, is easy to operate, and is suitable for batch production.

The invention discloses an intelligent baking device and a baking method beneficial to prolonging food shelf-life. The intelligent baking device comprises a control device suitable for process control, a baking device internally provided with a baking chamber, an air supply device, an exhaust fan and an oxygen sensor, wherein a jet head, a baking tray and an air capturing head are sequentially arranged in the baking chamber; an air output port of the air supply device and an air input port of the jet head are communicated; an exhaust port of the air capturing head and an exhaust pipeline are communicated; the oxygen sensor is assembled into the exhaust pipeline, and is suitable for judging whether air in the baking chamber is discharged fully or not; a gate is arranged at an access port suitable for moving in and out food on one side of the baking device in a sealing way so as to be suitable isolating the baking chamber and air; the control device controls the baking device to bake andcool food in the protecting gas environment. The food and the air are isolated through the protection gas, so that a grease in the food during the baking and cooling period is hard to oxidize, the remain quantity of oil oxidation deterioration substances and oxygen in the food is less, the oxygen inhalation capacity is low, the food is easy to preserve, and the shelf life can be improved by 0.5 to 1 time.

The invention provides slurry covering flame-retardant slurry for fire extinguishing of a gangue dump and application thereof. The flame-retardant slurry is prepared from the following raw materials in parts by mass: 60 to 80 parts of fly ash, 20 to 40 parts of desulfurized gypsum, 25 to 45 parts of lime powder, 20 to 30 parts of carbide slag, 10 to 15 parts of a flame retardant and 110 to 270 parts of water. The flame-retardant slurry has a good fire extinguishing effect and can achieve the purpose of rapidly extinguishing fire and cooling a gangue dump, and a cured layer formed after the flame-retardant slurry is cured has good strength and good water resistance.

The invention belongs to the food equipment field and especially discloses an intelligent food vacuum baking system suitable for improving a crispy taste. The system comprises a baking device with a built-in baking chamber, a cooling device with a built-in cooling chamber, a gas supply device suitable for conveying a carrier gas to the baking chamber and the cooling chamber, a vacuum device, a circulating device and a control device. The baking device and the cooling device are sealed and connected, and a gate is arranged through a sealing mode so that the baking chamber is separated from thecooling chamber. The food input port of the baking device and the food output port of the cooling device are provided with the gates through the sealing mode. Based on a built-in baking technology, the control device makes the vacuum device vacuumize the baking chamber so that the food is baked in a vacuum environment having the carrier gas, and makes the circulating device drive the carrier gas in the cooling chamber to circularly flow so as to cool the food. The food is baked in the vacuum environment having the carrier gas and is cooled in the circulating carrier gas, the crispy taste of the food is improved, oxidative deterioration objects and oxygen residues in the food are less, and the quality guarantee period of the food can be increased by 0.5-1 times.

The invention belongs to the field of food equipment and particularly discloses vacuum food baking equipment suitable for improving crispness of food. The equipment comprises a baking device with a built-in baking chamber, a gas supply device suitable for conveying carrier gas into the baking chamber, a vacuum device suitable for providing a vacuum environment for the baking chamber and a circulating device suitable for cyclic flowing of the carrier gas in the baking chamber in order to cool the food. A gate is arranged at an access port in a sealing mode, wherein the access port is suitable for food input and output and is formed in one side of the baking device; gas spraying heads and gas collecting heads which are suitable for uniform distribution of the carrier gas are arranged in thebaking chamber. The vacuum device is operated to vacuum the baking chamber, the baking device is operated to bake the food in the vacuum environment with the carrier gas, and the circulating device isoperated to make the carrier gas in the baking chamber cyclically flow to cool the food. By baking the food in the vacuum environment, the crispness and crispness uniformity of the food are obviouslyimproved, the carrier gas is discharged with baked volatile matters and leaking air, deteriorated fat-oxidative matter and oxygen residues in the food are further reduced, the preservation of the food is facilitated, and the shelf life can be prolonged by 0.5-1 time.

The invention relates to a preparation method of low-oxygen-content molybdenum powder. The method comprises the following steps that 2-10-micrometer molybdenum powder is adopted as a raw material andmolded by a cold isostatic press under the pressure of 150-300 MPa, then, a millstone machine is adopted for breaking the powder into 100-200 meshes, the powder is screened through a 100-mesh screen,the powder is subjected to hydrogenation treatment under the temperature of 1,000-1,500 DEG C, heat preservation is performed for 1-5 h, the powder is cooled to the room temperature and smashed through nitrogen atmosphere airflow and screened by a 100-mesh screen, and the molybdenum powder with the uniform granularity being 100 meshes and the oxygen content being 50-150 ppm is obtained. The technology is simple, the technology is extended directly on the traditional preparation technology, only a small amount of investment is needed, and the capacity is not limited; more importantly, the oxygen content is quite low, and the oxygen content of the molybdenum powder which is ordinarily 500-700 ppm is lowered to 50-150 ppm. The preparation method has the beneficial effect that the remarkable competitive advantages and profit space are shown in the aspects of the manufacturing cost, the product performance, large-scale production, environmental friendliness and the like.

The invention discloses intelligent baking equipment based on control of internet of things, and a baking method. The intelligent baking equipment comprise a control terminal and a control device which are in communication connection, a baking device internally provided with a baking chamber, an air supply device and an oxygen sensor; air jet heads, a baking tray, and an air collecting head are arranged in the baking chamber in sequence; an air outlet of the air collecting head communicates with an exhaust pipeline; the oxygen sensor is assembled in the exhaust pipeline and is suitable for judging whether air in the baking chamber is completely exhausted; and a gate suitable for moving food in and out is arranged at an opening on one side of the baking device in a sealing manner to isolatethe baking chamber from air. The control terminal is used for operating the control device to set a baking process through internet of things, and the control device is used for operating the bakingdevice to bake and cool the food in a protective gas environment based on the set baking process. Protective gas isolates the food from air, then grease hardly participates in an oxidation reaction during baking and cooling, so that oxidized and deteriorated substances in the food are few and the oxygen residual amount in the food is low, oxygen absorption capacity is low, the food is easy to store, and the shelf life can be improved by 0.5 to 1 time.

The invention belongs to the field of food equipment, and particularly discloses food intelligent vacuum baking equipment based on control of Internet of Things. The food intelligent vacuum baking equipment comprises a baking device in which a roasting chamber is arranged, a gas supply device suitable for transporting carrier gas to the roasting chamber, a vacuum device suitable for producing vacuum environment in the roasting chamber, a circulating device suitable for enabling the carrier gas in the roasting chamber to circulate, a control device and an operation and control terminal, whereina gate is arranged at an entrance and exit suitable for foods to input and output, in one side of the baking device, in a sealing manner; the operation and control terminal is used for manipulating the control device through the Internet of Things in a long-distance manner and setting a corresponding roasting technology; and the control device is used for manipulating the vacuum device to vacuumize the roasting chamber, roasting foods in the vacuum environment with carrier gas and manipulating the circulating device to drive the carrier gas to cool the foods. The foods are roasted in the vacuum environment, so that the crispness of the foods and the uniformity of the crispness are notably improved; the carrier gas is exhausted in time for baking volatile matter; and the quantity of oil oxidative deterioration substances and oxygen residual quantity in the foods are lower, the preservation of the foods is facilitated, and the quality guarantee period can be prolonged by 0.5-1 time.

The invention belongs to the field of food equipment, and specifically discloses food baking equipment suitable for suppressing oxidation of grease during baking. The equipment includes a gas supply device, a baking device, a cooling device, an oxygen sensor group suitable for judging whether the air is completely discharged, and a valve group; the gas supply device conveys a protective gas to thebaking device and the cooling device respectively, a food conveying outlet of the baking device is in sealed communication with a food conveying inlet of the cooling device, an isolation gate is arranged, and the isolation gate is suitable for transferring the food between the baking device and the cooling device; and a food conveying inlet of the baking device and a food conveying outlet of thecooling device are respectively provided with gates in a sealed manner to isolate the food from the air. The baking equipment is operated to bake and cool the food in the protective gas environment, the protective gas isolates the food from the air, an oxidation reaction of the grease in the food is difficult to realize, grease oxidation deteriorated substances and oxygen residues in the food areextremely small, the oxygen absorption capacity is poor, the food is easy to preserve, and the shelf life can be prolonged by 0.5 to 1 time.

The invention relates to the technical field of green plant cultivation equipment, and discloses a flowerpot capable of improving air permeability of soil. The flowerpot comprises a base, a pot body is fixedly mounted at the top end of the base, a water storage disc is slidably mounted on the side surface of the base, and a magnetic part is fixedly mounted at the sliding joint of the water storage disc and the base; and the lower end of the pot body is fixedly connected with one end of a tension spring, the other end of the tension spring is fixedly connected with the water storage disc, a water absorption cotton core is fixedly installed on the side face of the pot body, the lower end of the water absorption cotton core is placed in the water storage disc, a drainage hole is formed in the bottom face of the pot body, and an air exhaust cavity is formed in the base. According to the flowerpot, through the arrangement of the water storage disc and the tension spring, in the process that water in the pot body leaks to the water storage disc, the water storage disc moves downwards due to the weight of the water, the water in the water storage disc cannot block the drainage hole, air in the external environment can smoothly enter the pot body, and therefore the problem that plants die due to oxygen deficiency of the roots of the plants is avoided.