摘要:
A chamfer cut type protective cover of a composite saw comprises a front protective cover, an auxiliary protective cover and a rear protective cover. The outer ends of the front protective cover and the rear protective cover are respectively provided with connecting parts for connecting to a frame. The front end of the auxiliary protective cover is connected to the front protective cover, and the rear end of the auxiliary protective cover is connected to the rear protective cover. The chamfer cut type protective cover is a follower, the lower half part of the saw blade is prevented from being exposed to the outside, and thus the safety of the composite saw is increased.
摘要:
The invention relates to an overflow dyeing system of atomized airflow dyeing machine and a method for wet processing thereof, wherein a filter I is coordinately configured between the main pump and the heat exchanger; an overflow nozzle is connected on the output tube of the heat exchanger through an overflow nozzle connection tube valve and placed above the airflow nozzle; an auxiliary pump is added on the tube of the main pump; a connection valve I and a connection valve II are respectively configured on the tubes of both ends of the auxiliary pump. The invention effectively saves electricity and provides solutions to the dyeing limitation of airflow dyeing machines. This invention has both the airflow dyeing system and the overflow dyeing system, which prevent polyester fabric wrinkling while being dyed in high-temperature air flow at 130°C and reduce electricity consumption by air blower during the process of airflow dyeing at high temperature. This invention saves energy and enlarges the application of dyeing machine.
摘要:
A stethoscope head with adjustable audio frequency includes a head body (14), a diaphragm (12) and a fastener (11). The diaphragm (12) is provided with an annular step (142) and a footing (122). The diaphragm (12) is disposed on a sound collecting surface (5) at the front side of the head body (14) and is fixed on the head body (14) by the fastener (11). The outer marginal part of the front side of the head body (14) is provided with the annular step (142), and a screw thread (143) is provided on a step surface of the annular step (142). An annular groove (144) is provided at the sound collecting surface (5) inside the annular step (142), and the inner surface (148) of the annular groove (144) and the bottom surface (147) of annular groove (144) form an obtuse angle γ. The diaphragm footing (122) is disposed in the annular groove (144). The fastener (11) includes a ring A and a ring B whose upper surfaces are located at the same horizontal plane. The ring B is place in the ring A and the external diameter of the ring B is the same as the internal diameter of the ring A. An inner wall (115) of the ring A is provided with a screw thread (111) which matches with the screw thread (143) on the step surface. The stethoscope head of the invention is convenient to assemble and the sound effect can be adjusted continuously.
摘要:
A sea cucumber preparation and manufacturing method thereof, comprising steps as follows: put the cut and well-cleaned fresh sea cucumber or soaked sea cucumber into an airtight container; at 70 - 130°C, gelatinate for 1min ~ 20h, freeze-dry till the water content is less than 10wt%, then sequentially carry out coarse, ultra-micro and nanometer crushing till the fineness reaches 10 ~ 1000nm. Add water into the sea cucumber nanometer powder to carry out proteinase enzymolysis, after the enzymolysis is finished, inactivate the proteinase, separate and take the supernatant and dry to get nanometer sea cucumber extract. Evenly mix the extract with panax pseudo-ginseng saponins extract at the proportion of 99 ~ 70% : 1 ~ 30%. The content of the sea cucumber polysaccharide in the mixture is 2.5 ~ 8.0wt%, the content of panax pseudo-ginseng saponins is 0.3 ~ 21.0wt%. The compound preparation has complementary and synergistic effects on pharmacological effect. The side effects of single preparation can be eliminated through the compound preparation, the pharmacological functions of the sea cucumber or panax pseudo-ginseng single preparation are greatly enhanced, and can be used for anti-coagulation, diabetes and other various medicinal purposes.
摘要:
An Improved Preparation Method for D-Biotin The invention discloses an improved preparation method for D-Biotin. If the composite method takes the diesteas the raw material, the finial biotin will be generated with impurities. The features of the invention refers to the improved preparation method for D-Biotin includes: firstly, (3aS,4S,6aR)-1,3-ωωω -butyl)-1 H -thiaphene[3,4-d]-2,4(1 H) -ketone is got after the methane tricarboxylic acid trialkyl ester and (3aR, 8aS, 8bS)-1,3-2-[3,4-d]thiophene [1,2-a]sulfuryl halide have the condensation reaction in the alkaline environment and then D-Biotin can be got after the reaction process of hydrolysis, decarbaxylation and closed loop. The invention succeeds in greatly improving the biotin quality from the original basis and simultaneously avoids the generation of impurities and the occurrence of side reaction.
摘要:
A tea maker provides a simple structural configuration, stable and rigid structure, and low manufacturing cost, and is adapted to effectively separate the tea leaves from the brewed tea for adjustably controlling the concentration of the brewed tea. The tea maker includes a supporting frame, a tea infusing container with a container lid, a tea basket disposed in the tea infusing container, and a control circuit. A sliding arrangement includes a vertical support, a sliding frame slidably coupled at the vertical support, and a resilient element. The sliding frame includes a hanger, an actuator, and a first permanent magnet. The hanger is supported above and aligned with an electromagnet. A second permanent magnet is provided at the outer side of the surrounding wall of the tea basket and is magnetically attracted with the first permanent magnet.
摘要:
A wind generator with a water float sail includes a pond or a circular water tank containing liquid, a water float running system which can rotate in the pond or the circular water tank under the drive of wind and which includes a water float running platform (8) floating on the liquid and several sails (16) placed on the water float running platform, a location system which can locate the water float running system on the liquid surface, and make it rotate within a predetermined range, a brake system which can stop the rotation of the water float running system, and a generator system (23) which can transform the energy produced by the water float running system into electric power output. The wind generator can make the water float running system floating on the liquid surface rotate, and it can generate electricity with low cost and high power.
摘要:
This invention revealed a method of making thermally sprayed sandwich bottom cooking pot. Existing sandwich bottom pot might have the problem of abscission of metal plate when using them. This invention offers a new method of making thermally sprayed sandwich bottom cooking pot, the procedures are as follows: 1) Surface roughening: Roughen the outer surface of the pot by means of sand blasting until the roughness of outer surface is 5∼50 micrometers; 2) Thermal spraying: Spray metal on the bottom of the outer surface after roughening, forming close binder; 3) Compositing the pot body: Place metal plate on the binder which is described in Step 2), preheat them, and composite them under high pressure. In this way, the bond between the pot bottom and the metal plate is strong, and the problem of week binding of the bottom is solved.
摘要:
A pressing and stripping apparatus for punch die includes a base, a pressing and striping plate, an A-type pillar, a first bolt, an elastic or pressure element, a stripping bolt, a second bolt, a die-mounting bolt, a B-type pillar, a locating pin, a cylindrical guide column, a third bolt, an outer supporting frame, and a square guide column; wherein the pressing and stripping plate is movably connected to the base via the stripping bolt, wherein the pressing and stripping plate reciprocates along the axial direction of the stripping bolt while working, and the elastic or pressure element is provided between the pressing and stripping plate and the base. The push rod used with the pressing and stripping apparatus for the punch die is a column, one end thereof is a polygonal blind hole, and the other end thereof is a stepped shaft with parallel threads. This arrangement can achieve a common pressing and stripping apparatus, making the punch die easy to be disassembled.
摘要:
The invention discloses an intermediate 1-methoxyl-2, 6, 10-trimethyl-1, 3, 5, 9-undec-tetraene, and a preparation method and uses thereof. In the synthesis method for the current lycopene intermediate 2-pos double bond C-14 aldehyde (2, 6, 10-trimethyl-2, 5, 9-undecatriene-1-aldehyde), expensive methyl iodide, polluting dimethyl sulphide and dangerous strong base are needed, so that the method is hardly applied to industrial production. The invention provides a new compound 1-methoxyl-2, 6, 10-trimethyl-1, 3, 5, 9-undec-tetraene, and pure 2-pos double bond C-14 aldehyde can be prepared by hydrolyzing and refining the compound. The synthetic route is simplified and the great suitability for industrial production is achieved.