44results about How to "Affect concentration" patented technology

The invention provides a biogas digester which is used for solving the problem that waste of biogas is easily caused in the slag removal process in the conventional biogas digester. The biogas digester comprises a gas storage tank and a digester body in which a fermentation disc is arranged, wherein the top of the digester body is connected with a sealing cover; a lifting device which can drive the fermentation disc to translate up and down is arranged at the bottom of the fermentation disc; a gas inlet pipe and a gas outlet pipe are arranged between the gas storage tank and the digester body; a gas suction piece I is arranged in the gas inlet pipe; a sealing plate I and a sealing plate II are arranged in the gas storage tank; an elastic piece through which the sealing plate I has the tendency of sealing the gas inlet pipe is connected to the sealing plate I; a cylinder I through which the sealing plate II seals or opens the gas outlet pipe is connected to the sealing plate II; an exhaust pipe and a pressure gage are connected to the digester body; a gas suction piece II is arranged in the exhaust pipe; a sealing plate III is arranged at the end face of the exhaust pipe; and a spring I through which the sealing plate III has the tendency of sealing the exhaust pipe is arranged between the gas suction piece II and the sealing plate III. The biogas digester disclosed by the invention has the advantages that waste of biogas is avoided during slag removal.

The invention discloses an energy-saving type steel tube sand blasting machine. The energy-saving type steel tube sand blasting machine comprises a box body. A feeding door is hinged to one side of the box body. An extending-and-contracting rotor is movably arranged in each rolling wheel in an inserted manner. A driving belt wheel is fixedly mounted on a driving shaft of a driving motor. A horizontal movement lead screw is further fixedly mounted on the driving shaft of the driving motor. A horizontal movement seat is movably mounted on the horizontal movement lead screw. An extending-and-contracting rod is movably mounted on the horizontal movement seat. Multiple spray heads are fixedly mounted on a sand blasting seat. A gear shaft of a driving gear and a gear shaft of a driven gear are each fixedly provided with a magnetic attraction roller. Each magnetic attraction roller is internally uniformly provided with multiple tile type magnets. A water sand blasting box communicates with asand blasting pump through a pump. By means of the energy-saving type steel tube sand blasting machine, surface sand blasting treatment can be conducted on steel tubes of different diameters and different lengths; in the blasting process, stability of the steel tubes can be guaranteed, and meanwhile, iron chippings formed by sand blasting impact can be recycled; sand blasting liquid obtained afterblasting can enter the sand blasting cycle once again; and energy conservation and environmental protection are achieved, and the sand blasting effect is good.

The invention discloses a vision training device. The vision training device comprises a strip-shaped rail, a sighting mark plate is arranged on the rail, a head fixing part is further arranged at any one end of the rail and comprises a supporting frame, a chin base and a forehead retainer ring, the height of the chin base is adjustable, and the forehead retainer ring is fixed to the upper end of the supporting frame and provided with a mirror bracket, wherein the mirror bracket comprises an L-shaped fixed plate. The fixed plate comprises a fixed side and a free side, the fixed side is fixed to the forehead retainer ring, a pull rod base is arranged on the free side and provided with a through hole, a pull rod penetrates into the through hole in a clearance fit mode and is sleeved with a spring used for limiting the position, relative to the pull rod base, of the pull rod through elasticity, the axis of the pull rod is perpendicular to the fixed side, and a moving plate is further fixed to the end, close to the fixed side, of the pull rod. The vision training device is simple in structure and beneficial to training the muscles of the eyes of a trainee.

The invention discloses an ultraviolet disinfection device, relating to the technical field of ultraviolet disinfection apparatus. The ultraviolet disinfection device comprises a shell, a quartz tube,an ultraviolet disinfection lamp, a cleaning device, a controller and a biosensor, wherein a base is arranged at the bottom of the shell, a water inlet and a water outlet are arranged at the top of the shell, the cleaning device comprises a driving mechanism, a moving mechanism and a cleaning mechanism, the cleaning mechanism is connected to the moving mechanism and provides power to the moving mechanism, the moving mechanism is connected to the cleaning mechanism, the cleaning mechanism is used for cleaning the outer surface of the quartz tube, the biosensor is arranged in the shell, and thedriving mechanism and the biosensor are electrically connected to the controller. With the design of the cleaning device, the outer surface of the quartz tube can be automatically cleaned, thereby avoiding the phenomenon that the ultraviolet light permeating and sterilizing effect is affected by scaling on the outer surface of the quartz tube.

The invention discloses a photocatalytic evaluation characterization device and method for carbon dioxide reduction. The device comprises a photocatalysis mechanism, a gas path mechanism, a water vapor generation mechanism and a gas chromatograph, the photocatalysis mechanism comprises a blast drying box, a light source part, a catalytic reactor and a vacuum pump, the catalytic reactor comprises areaction tank, a four-corner supporting frame, an inlet pipeline part and an outlet pipeline part, and the four-corner supporting frame comprises an activated carbon carrying net and supporting legs.The method comprises the following steps of: 1, preparing a photocatalyst; 2, connecting and debugging the device; 3, filling the photocatalyst; 4, performing preparation before reaction; 5, carryingout photocatalytic reduction reaction on carbon dioxide; 6, detecting the concentration of methane gas and the concentration of carbon monoxide gas; and 7, obtaining the optimal photocatalyst for preparing methane and the optimal photocatalyst for preparing carbon monoxide. The photocatalytic evaluation characterization device and method for carbon dioxide reduction are reasonable in design, andimprove the accuracy of photocatalytic evaluation characterization of carbon dioxide reduction.

Disclosed are a device and a method for preventing emulsion channeling between cold rolling unit frames. A liquid level meter and a concentration meter are arranged in an emulsion main box of the tail frame; the liquid level meter and the concentration meter are connected with a liquid level monitoring module and a concentration monitoring module of a computer logic system respectively; a pipeline which is connected between the emulsion main box of the tail frame and an emulsion main box of the previous frame is provided with a backflow pump; the computer logic system is used for performing real-time monitoring on the liquid level and the concentration of emulsion located in the emulsion main box of the tail frame and performing real-time deviation treatment on the liquid level and the concentration. According to the device and the method for preventing the emulsion channeling between the cold rolling unit frames, the problem of the emulsion channeling between the cold rolling unit frames especially the emulsion channeling between the cold rolling unit frames under the multi-concentration rolling condition is solved, the quality control capability of high surface quality requirements of products is ensured, the cost is reduced, the stability of the production process is improved, and the device and the method are suitable for the field for preventing the emulsion channeling between the various cold rolling unit frames.

A CMP polishing pad for polishing a semiconductor substrate is provided containing a polishing layer that comprises a polyurethane reaction product of a reaction mixture comprising a (i) curative of from 15 to 30 wt. % of an amine initiated polyol having an average of from 3 to less than 5 hydroxyl groups and a number average molecular weight of 150 to 400, and from 70 to 85 wt. % of an aromatic diamine and a (ii) polyisocyanate prepolymer having a number average molecular weight of from 600 to 5,000 and having an unreacted isocyanate content ranging from 6.5 to 11%. The CMP polishing pad has a tunable tan-delta peak temperature at from 50 to 80° C. which has a value of from 0.2 to 0.8 at the tan-delta peak temperature and is useful for polishing a variety of substrates.

Neutrophil attracting and activating factors that may already exist in normal cells are located.

Polypeptides having neutrophil stimulating activity were isolated from an extract originating from a normal porcine heart, whereby the invention was completed. The invention provides (a) a polypeptide consisting of the amino acid sequence of SEQ ID NO:1; (b) a polypeptide consisting of an amino acid sequence derived from the amino acid sequence of SEQ ID NO:3 by deletion, substitution, insertion or addition of one or more amino acids and having neutrophil stimulating activity; or (c) a polypeptide consisting of an amino acid sequence biologically equivalent to the amino acid sequence of said polypeptide (a) or (b).

The invention relates to the technical field of grass and wood cultivation, in particular to a strawberry soilless culture device, which comprises a rack and a culture plate, wherein a concave culturetank is arranged on the culture plate; a containing frame for containing crops is arranged above the culture tank; a collecting tank is arranged below the culture tank; a guide pipe is communicated between the culture tank and the collecting tank; a collecting box is arranged on one side of the collecting tank; a liquid extraction pipe is communicated with the bottom of the collecting box, the liquid extraction pipe is communicated with the culture tank, a liquid outlet pipe is communicated between the collecting box and the collecting tank, a push plate and a first telescopic rod are arranged in the collecting box from left to right, the push plate is fixedly connected with the first telescopic rod, a water tank is arranged on the other side of the collecting tank, a stirring basin is arranged above the water tank, a culture solution tank is arranged on one side of the water tank, a motor is arranged in the stirring basin, an output shaft of the motor is coaxially connected with a rotating shaft, the rotating shaft is connected with a stirring rod, a drainage tube is communicated between the stirring basin and the culture tank, and a pressure switch which is electrically connected with the motor is arranged on the rack. By adopting the scheme for strawberry soilless culture, the utilization rate of the culture solution can be improved.

The invention discloses a reagent grade hydrofluoric acid preparation device. The reagent grade hydrofluoric acid preparation device comprises a drying tank; a feeding port is mounted in one side of the upper part of the drying tank; an air pump is mounted on one side, far away from the feeding port, of the upper part of the drying tank; and an air introducing pipe is mounted at an output end of the air pump. The reagent grade hydrofluoric acid preparation device is provided with the drying device; fluorite powder is subjected to complete drying treatment through hot air sprayed from a rotaryspraying head to prevent water in the undried fluorite powder from influencing the concentration of hydrofluoric acid after a production reaction, so that the production quality is improved; the hydrofluoric acid preparation device is provided with two groups of distillation columns, namely, a crude distillation column and a rectifying column; the crude distillation column is mainly used for removing most sulphuric acid, water and fluorite powder; the rectifying column can effectively remove metal ions from the hydrofluoric acid; through double purification,a hydrofluoric acid solution with high purity can be produced; compared with conventional single distillation column, the purifying filtering effect is better; the precision is higher; and an additive is not required to be added manually, so that the operation is more convenient.

The invention discloses a power cabinet convenient for electrical equipment maintenance, and the power cabinet comprises a power cabinet body; the top of the power cabinet body is fixedly connected with a supporting block, the top of the supporting block is fixedly connected with a shielding shed, and the inner bottom of the power cabinet body is movably connected with a second gear; the right side of the second gear is provided with a first motor fixedly installed at the bottom in the power cabinet body, the driving end of the first motor is fixedly connected with a first gear, and the first gear is engaged with the second gear. According to the device, through mutual cooperation of the mounting plate, the first gear, the first motor, the bottom plate, the second gear, the first air cylinder, the second connecting block, the first connecting block, the second air cylinder and the adjusting mechanism, the first gear drives the second gear to rotate, multi-angle observation of electronic elements at the top of the mounting plate is facilitated, and problems can be found quickly; and the electronic elements are replaced or repaired in time, so that the quick use of the device is not influenced.

The invention relates to the technical field of drug detection, and discloses an allopurinol quality detection method, which comprises: S1, preparing raw materials: 30 pieces of allopurinol tablets, abalance, a screen, a mortar, a 100 ml measuring flask, 30 ml of NaOH, a 500 ml measuring flask, 200 ml of hydrochloric acid solution, and a stirring rod; S2, carrying out grinding and filtering: weighing 20 pieces of allopurinol tablets by using the balance, recording the mass, carrying out grinding by using the mortar and filtering by using the screen; and S3, carrying out dissolution. Accordingto the method disclosed by the invention, allopurinol and other related substances, namely impurities, in the allopurinol powder sample to be detected can be effectively separated and detected; the operability is strong, the specificity of the detection method is strong, the sufficient reaction of allopurinol powder and NaOH is promoted, and the time is saved; and the liquid medicine adhered to the surface of the stirring rod can be flushed away, and in addition, the liquid splashing can be prevented from influencing the concentration of substances in the liquid medicine, and the influence onthe detection result is avoided, so that the detection precision is improved.

The invention provides a connection mechanism for pickling tanks. According to the mechanism, between two adjacent pickling tanks, grooves are arranged on the upper end surfaces of adjacent walls of the pickling tanks; the main body of the mechanism is a The inner open box body; the upper end of the box body is extended with a boss engaged with the wall of the groove; the upper end of the box body is tapered with a diameter that is larger at the top and smaller at the bottom. In the technical scheme of the present invention, a groove is provided between adjacent pickling tanks, and a box is clamped in the groove to collect the liquid dripping on the wall of the adjacent pickling tank to avoid falling into the pickling tank. In the adjacent pickling pools, the liquids in the adjacent pickling pools are avoided from mixing with each other, affecting the concentration and composition of each other, which can improve the cleanliness of pickling of metal parts and reduce the defective rate of electrophoresis or painting of metal parts.

The invention relates to a method for extracting and preparing antibacterial and cold-dispelling wormwood essence, and adopts a wormwood cleaning and crushing device which comprises a bottom rack, a vertical rack, a movable cleaning mechanism, a cleaning box and a juice extraction mechanism. The method can solve the following problems in the process of preparing the antibacterial and cold-dispelling wormwood essence by extracting the wormwood rhizomes: a, the wormwood rhizomes generally need to be cleaned in the extraction process of the wormwood essence, and the wormwood rhizomes can carry a large amount of soil after being pulled out of soil; if the soil on the rhizome part of the wormwood is not fully cleaned, the extracted wormwood essence possibly contains impurities, so that the quality of the wormwood essence is influenced; B, in the traditional wormwood essence extraction process, the epidermis of the wormwood rhizome is not crushed, so that the internal juice is not sufficiently extracted, In the prior art, the utilization rate of wormwood rhizomes cannot be maximized, juice still exists in the wormwood rhizomes, and the extraction rate of the juice is low.