36results about How to "Accurate volume control" patented technology

Microfluidics packages and methods of use are described, comprising in one embodiment a substrate having a top surface and means to lower pressure on the top surface; a fluidics card having a bottom surface and means to allow fluids to traverse through the card; and a polymeric barrier film, the polymeric barrier film positioned between the top surface of the substrate and the bottom surface of the fluidics card.

The invention discloses timed quantitative additive feeding type lubricating oil production equipment which comprises a shell. A bearing is fixed in a through hole in the middle of the upper surface of the shell, the inner periphery of the bearing is fixedly connected with the lateral upper end of a rotating shaft, the upper end of the rotating shaft is connected with an output shaft of a servo motor through a coupler, the servo motor is fixed to the upper surface of the shell through a mounting frame, and the lower end of the rotating shaft extends into the shell. Stirring blades are fixed to the lateral side of the rotating shaft, and a feeding port in the left side of the upper surface of the shell is communicated with a discharging port of a first electromagnetic control valve through a guide pipe. The timed quantitative additive feeding type lubricating oil production equipment is high in intelligence and accurate in control of additive feeding time and feeding quantity; by fixed blades, layering of lubricating oil in the shell can be prevented during stirring, and efficiency in mixing of lubricating oil and additives is improved; by an atomizing nozzle, uniformity in distribution of the additives is achieved, and the additives can be completely mixed with lubricating oil in the shell.

Between the lower stage in respective phases of inverter circuit and the negative potential side, shunt resistors are inserted for respective phases. The potential differences across shunt resistors occurring by current flowing through shunt resistors are amplified by amplifier unit. From the output of amplifier unit, current detecting unit detects current of each phase flowing through motor formed by a sensorless brushless DC motor. Rotation detecting unit calculates the rotation speed and position of motor based on the current detected by current detecting unit. This structure makes it possible to directly detect solely the current flowing through the windings of motor. Therefore, it becomes possible to accurately detect the current of the motor windings, and the ventilation device can maintain the ventilation air volume from a small air volume to a large air volume always at a constant value.

The invention discloses a settling separation device for phytoplankton. The settling separation device comprises an acrylic sleeve, an upper cover plate and a lower cover plate fixed with each other, wherein an upper cover plate hole is formed on the upper cover plate; the upper cover plate hole is connected with a bottom end of the acrylic sleeve; a separating plate slide slot is formed on the top surface of the lower cover plate; a lower cover plate hole is formed on the part corresponding to the position of the upper cover plate hole at the bottom of the separating plate slide slot; the lower cover plate hole is connected with the top of sedimentation glass; a water draining valve is arranged at the bottom of the sedimentation glass; a separating plate is arranged in the separating plate slide slot; the separating plate is connected with one end of a pull rod; and the other end of the pull rod is penetrated through a pull rod sealing ring embedded between the upper cover plate and the lower cover plate and a pull rod penetrating hole formed on the lower cover plate in turn and then is connected with a handle. According to the invention, the separating time after the settling of the phytoplankton sample is reduced by 80% or above, the settled phytoplankton is prevented from being disturbed and entering into supernate, the constant volume operation is convenient and the settling separation device is difficult to be damaged.

The invention belongs to the field of air guns and particularly relates to an air cylinder type air pistol. The air cylinder type air pistol comprises a trigger mechanism, an air inlet device, an air outlet device, a loaded linkage mechanism, a sight device and a front sight device, wherein the air inlet device comprises an air cylinder, wherein the air cylinder is mounted in an air pipe through a locking sleeve, and the air outlet end of the air cylinder is connected with an air inlet structure; the air inlet structure comprises an air inlet valve, and a pricking pin is arranged in the air inlet valve; the air outlet device comprises a valve body component, one end of the valve body component is connected with the pricking pin, and the other end of the valve body component is abutted against an air outlet. The air cylinder type air pistol has the benefits that the operation is convenient, the structure is simple and practical, and a method for manually pressing air into an air chamber in the air gun during a shooting is eliminated.

The invention discloses an environmentally-friendly silk quilt manufacturing technology. The environmentally-friendly silk quilt manufacturing technology comprises the following steps that silkworms are bred; the silkworms are put on a baking trolley and pushed into an oven, the silkworms are baked, the baking temperature is set to be 85 DEG C, and the baking time is set to be 22min; and the bakedsilkworms are put into a cocoon cooking mechanism, and sodium carbonate is added to the cocoon cooking mechanism through a throwing mechanism. According to the environmentally-friendly silk quilt manufacturing technology, due to the cooperative utilization of a second motor, a rotating shaft and connecting rods, a worker can control the rotation of an output shaft of the second motor, the outputshaft of the second motor can drive the rotating shaft and the connecting rods to rotate, silk cotton bags which are fixed to clamping mechanisms can rotate along with the rotating shaft and the connecting rods, and the moisture on the silk cotton bags is removed; after the moisture is removed, the silk cotton bags are subjected to drying treatment through the hot air generated by air heaters, thesilk cotton bags can be subjected to water removal and drying operation in sequence after the silk cotton bags are put into a drying box, and therefore the production process is simplified, the silkcotton bags do not need to be repeatedly taken and placed, and the production efficiency is improved.

The invention provides a safe and efficient infusion and oxygen delivery device for the emergency department, and relates to the technical field of medical instruments. The movable supporting device is fixedly connected with an oxygen inhalation mounting part; a floating positioning device is mounted on the oxygen inhalation mounting part; a liquid collecting device is fixedly connected between the two positioning pieces; four flow dividing devices are fixedly embedded in the liquid collecting device; four quantity control driving parts are mounted on the liquid collecting device; the four quantity control driving parts are aligned with the four flow dividing devices; the bottom of the liquid collecting device is fixedly connected with a linkage flow stopping part; the bottom of the linkage flow stopping part is fixedly connected with a liquid shortage safety device, infusion is safer, meanwhile, safe blocking can be achieved in an auxiliary mode, quantity control is more accurate, air pollution can be effectively avoided, and the problems that an existing infusion and oxygen delivery device cannot effectively achieve automatic liquid shortage blocking, medical accidents are likely to be caused, potential health hazards exist, and the safety is high are solved. And meanwhile, free regulation and control of multiple bags of medicines cannot be realized.

The invention discloses a recycling device for autoclaved aerated concrete block cutting waste. The recycling device comprises a mixing cabin, a feed inlet and a stirring mechanism, wherein the feed inlet is formed in one side of the mixing cabin, the stirring mechanism is arranged in the mixing cabin and composed of a driving motor and a stirring rod, and baffles are hinged in the top end of the mixing cabin; and an opening and closing assembly for adjusting the angles of the baffles is arranged between the mixing cabin and the baffles. According to the recycling device for the autoclaved aerated concrete block cutting waste, through cooperation of the baffles, first gears, first half gears, first springs, a collecting cabin and a weighing sensor, accurate quantity control over the waste is achieved, and the concentration of follow-up mixing is ensured; and meanwhile, through cooperation of a second half gear, a torsion spring, a second gear and a beating plate on the baffles, large waste materials can be conveyed into the collecting cabin after being treated, the particle size of waste materials is ensured, subsequent mixing is more convenient and stable, and it is ensured that waste material recycling work is stably carried out.

The invention relates to the technical field of coatings, and discloses novel continuous feeding equipment for coating processing. The equipment comprises a mounting table, a dustproof shell is fixedly connected to the top of the mounting table, a feeding hole is formed in the side wall of the dustproof shell, a via hole is formed in the top of the dustproof shell, and a dust suction pipe is fixedly connected to the inner wall of the via hole. And one end of the dust suction pipe is fixedly connected with an air draft dust suction machine, the top of the mounting table is fixedly connected with supporting legs, and the side walls of the supporting legs are fixedly connected with positioning blocks. According to the novel continuous feeding equipment for coating processing, the purpose of accurately controlling the coating feeding amount is achieved, the problem that common continuous feeding equipment is not particularly accurate in control over the coating feeding amount is solved, a worker can accurately control the coating proportion, the situation that the coating is too much or too little is avoided, the production quality of the coating is improved, the production cost of a factory is reduced, and the requirements of the factory on yield and quality are met.

The invention relates to an ultramicro nucleic acid protein analyzer automatic sample feeding detection device. Efficiency and accuracy of detection and analysis of nucleic acid protein are greatly improved. According to the scheme, the device comprises a probe control mechanism, a cleaning mechanism, a sample dispensing mechanism and a sample sending mechanism. The probe control mechanism is controlled by a stepping motor to achieve vertical swinging of an upper detection probe. The cleaning mechanism is controlled by a stepping motor to drive a fire mandrel to rotate, cleaning paper on a second mandrel is wound around the first mandrel, and then the upper detection probe and a lower detection probe are cleaned. The sample dispensing mechanism injects samples in a sample gun to the lower detection probe, and the sample sending mechanism drives the cleaning mechanism and the sample dispensing mechanism to horizontally move. The volume control of the detection and analysis samples is more precise, an automatic control device is used, automatic sample feeding detection is achieved, efficiency and accuracy of detection and analysis of nucleic acid protein are obviously improved, inspection operation is simple, and unnecessary labor of relevant researcher is reduced.

The invention relates to a godet wheel assembly and belongs to the technical field of spinning accessories. The godet wheel assembly comprises a support (1). One end of the support (1) is provided with a connecting piece (2), and the left side and the right side of the connecting piece (2) are provided with lead screws (7) which are connected with the connecting piece (2) through threads. Each lead screw (7) is provided with a locating nut (3), a rotation stopping part (4), an adjusting part (9) and an adjusting knob (6) from inside to outside in sequence, wherein godet wheels (5) are installed on the adjusting parts (9) which are connected with the lead screws (7) through threads. The godet wheel assembly is simple in structure and convenient to adjust, and the adjusting variable can be accurately controlled.

The invention discloses an in-situ concentration device and method for a phytoplankton sample. The device comprises a concentration device and a metering device, the concentration device comprises a cylinder body, a one-way valve device and cylinder body bolting silk; the metering device comprises a connecting rod, a positioning rod, a slow descending device, a volume positioner, a base and a weight. By utilizing the device and method, in-situ concentration can be directly realized in the sample bottle, the problem that the density of the sample is inevitably changed because the sample needs to be poured into a concentration device and then transferred out after being concentrated by other devices is solved, and the loss of the sample and the error are fundamentally reduced.