34results about How to "Reduced separation loss" patented technology

The invention relates to an air supply apparatus, air conditioning equipment and an air supply method of the air conditioning equipment, and relates to the technical field of an air conditioner. The invention mainly adopts the technical scheme that the air supply apparatus comprises at least two air duct assemblies, wherein each air duct assembly comprises an air duct, a fan and a guidance and control apparatus. One end of each air duct is arranged as an air inlet, and the other end of the air duct is arranged as an air outlet; the fans are arranged at the positions, which are close to the air inlets, in the air ducts; the guidance and control apparatuses are arranged at the positions of the air inlets of the air ducts. When the air duct assemblies work, the guidance and control apparatuses enable air flow subjected to heat exchange by a heat exchanger to be led into the air ducts from the air inlets. When the air duct assemblies stop working, the guidance and control apparatuses seal the air inlets of the air ducts. The air conditioning equipment comprises the air supply apparatus. The air supply method of the air conditioning equipment is characterized by adopting the air conditioning equipment to deliver the air flow subjected to heat exchange by the heat exchanger into a room. The air supply apparatus, the air conditioning equipment and the air supply method of the air conditioning equipment, which are disclosed by the invention, are mainly used for avoiding the condition that the air flow in an inner cavity of the air conditioning equipment disturbs fan blades of fans in a work stop state to cause generation of abnormal noise.

The invention discloses a preparation method of quetiapine hemifumarate. The preparation method of quetiapine hemifumarate comprises the following steps: etherifying, hydrogenating, condensing and carrying out chlorination by taking o-chloronitrobenzene and thiophenol as raw materials, and finally salifying with fumaric acid, thereby obtaining quetiapine hemifumarate. The production technology is simple to operate and convenient for large-scale production, the cost is saved and the high-purity high-yield quetiapine hemifumarate can be obtained.

The invention belongs to the technical field of ventilators, and particularly relates to an axial-flow fan. A novel axial-flow fan with small-aspect-ratio blades having obliquely-cut and twisted blade roots comprises an air inlet chamber, a motor, a support ring, support plates, an impeller, an exhaust segment and the like, wherein the motor is arranged on the support ring in the center of the back part of the air inlet chamber, and is directly connected with the impeller through a shaft; the hub and blades of the impeller are designed integrally; the trailing edges of the blade roots of the blades are cut obliquely; an air inlet is formed in the air inlet end of the air inlet chamber and is connected with an air inlet channel at the front end; the exhaust segment is tightly connected with the air inlet chamber to construct a main through flow part; and the outlet segment of the exhaust segment is enlarged gradually. Due to the adoption of the novel axial-flow fan, the stability of axial air inflow of inlet air current and an inlet flow field is ensured; the fan is simple and compact in structure, and is convenient to manufacture; and under the conditions of limited size, low rotating, low flow and the like, the impeller has high boosting capability and high running efficiency.

The invention provides a drip-imitating tube-type demister, which is characterized by comprising at least two layers of parallel rows of tubes, wherein the rows of tubes are formed by tubes which are uniformly arrayed, the two ends of the rows of tubes are respectively supported on a plate, and the direction of flue gas flow is vertical to the direction of the short axis of the inner tubes of therow of tubes. The invention also provides a demister device, which is characterized by comprising the drip-imitating tube-type demister, wherein the drip-imitating tube-type demister is arranged at aflue gas desulfurization tower or the upstream of a horizontal flue, the demister is arranged at the downstream of the flue gas desulfurization tower, or a vane demister is arranged at the downstreamof the horizontal flue. The invention has the advantages that the demister reduces partial flow resistance, the area for blocking mist drop can be enlarged, demisting effect is improved, and scale isnot easy to form.

The invention discloses a centrifugal fan impeller with adjustable splitter vanes. In the use of existing fan products, the working conditions are usually not consistent with the rated working conditions, resulting in low efficiency of the fan and narrowing the efficient operation range of the fan. The guide ring and the wheel disc of the present invention constitute a revolving pair; the total fixed frame is fixed on the wheel disc, and a guide ring fixing device is provided; the guide ring is connected with n splitter blade ring fixing devices; the splitter blade and the wheel The cover is connected through the fixing device on the splitter blade wheel cover, and is connected with the disc through the fixing device on the splitter blade wheel disc; the fixing device on each splitter blade ring is connected with the corresponding one on the splitter blade wheel disc through the splitter blade adjustment piece. The invention adjusts the angle of the splitter blades by rotating the guide ring to make the splitter blade regulator swing, and obtains the highest operating efficiency for different working conditions, ensuring that the centrifugal fan can also obtain the highest operating efficiency under rated working conditions under non-rated working conditions .

The invention provides a method and device for accurately measuring the transpiration efficiency of plants. The basic principle is to use a sealed cover to suppress the surface evaporation of the cultivation container (box) (to make it approach "zero") moisture, and measure the weight change of the growing plant cultivation box Obtain transpiration water consumption, take plant samples to obtain dry matter accumulation, and then calculate plant transpiration efficiency. The measuring device used in the present invention comprises a closed incubator, a closed air pressure balance box and a connecting pipe arranged between the two boxes, and a seedling hole is arranged on the upper surface of the incubator. The main advantages of the present invention are: effectively suppressing the water loss caused by soil evaporation, solving the problem of root respiration and oxygen supply under sealed conditions and the problem of pressure change regulation under sealed conditions, the quantitative addition of nutrients and water is accurate, and the water consumption and biomass of transpiration are guaranteed accurate weighing. The measuring device has the advantages of low cost, good sealing performance, short measuring time, and less root separation loss, which is beneficial to batch testing.

The invention discloses a vertical-type threshing device and a vertical-type threshing harvester employing the same. The threshing device comprises a small belt pulley, a drive shaft, a vertical-typethreshing roller outer cylinder, a vertical-type threshing roller inner cylinder, a driving bevel gear, a driven bevel gear, and an obtuse angle threshing element. The drive shaft is fixedly connectedto a frame, and the small belt pulley is fixedly connected to the right end of the drive shaft. The vertical-type threshing roller outer cylinder is installed at the central part of the drive shaft,and the driving bevel gear is disposed at the central part of the drive shaft. The vertical-type threshing roller outer cylinder is fixedly connected with the frame, and the vertical-type threshing roller inner cylinder is disposed in the vertical-type threshing roller outer cylinder. The driven bevel gear is disposed in the vertical-type threshing roller inner cylinder. The driving bevel gear isengaged with the driven bevel gear. The obtuse angle threshing element is fixed on the external surface of the vertical-type threshing roller inner cylinder. The threshing device enables the overall length to be effectively reduced, effectively improves the threshing performance, effectively improves the distribution uniformity of threshed objects on a sifter, remarkably reduces the harvesting loss, and improves the harvesting quality.

The invention discloses a preparation method of sunscreen octyl triazone and the prepared octyl triazone and its application. The method comprises: step 1, carrying out esterification reaction between p-nitrobenzoic acid and isooctyl alcohol, Product I is obtained; step 2, product I undergoes hydrogenation reaction in the presence of a catalyst, after the reaction is completed, filter and distill under reduced pressure to obtain product II; step 3, add solvent to product II, and heat up to reflux, add solution A , to react, after post-treatment, to obtain octyl triazone. In the present invention, the sunscreen agent octyl triazone is efficiently prepared by using cheap and easily available p-nitrobenzoic acid as a raw material through esterification, hydrogenation, and coupling, and at the same time, isooctyl p-aminobenzoate is obtained, and the obtained octyl The triazone has high chromatographic purity and high yield, and has the advantages of less three wastes, low cost, environmental protection, simple operation, easy control, and easy realization of industrial production.

The invention discloses a reflux condenser pipe special for microwave chemistry, which mainly comprises an external layer water sleeve (3), a standard ground (4), a barrel-shaped pipe (5), baffle stabs (6), an inner core pipe (7), a coil pipe (8), a water distribution head (10) and a serial ball pipe (11). The reflux condenser pipe special for the microwave chemistry is characterized in that: thestandard ground (4) at the upper end of the external layer water sleeve (3) is welded with the barrel-shaped pipe (5) together; the baffle stabs (6) are uniformly distributed at the periphery of the inner wall of the barrel-shaped pipe (5); the lower end of the barrel-shaped pipe (5) is welded with the upper end of the serial ball pipe (11); the lower end of the inner core pipe (7) is connected with the water distribution head (10); and the coil pipe (8) is coiled outside the inner core pipe (7), and the lower end of the coil pipe (8) is connected with the water distribution head (10). Therefore, blasting explosion and high consumption of an organic solvent can be effectively prevented.