9 results about "Sequential injection" patented technology

The invention discloses a gas chromatography sampling device and a gas chromatograph, and relates to the technical field of gas chromatographs. The gas chromatography sampling device comprises a supporting frame and further comprises a main lifting device which is fixedly installed on the supporting frame, the telescopic end of the main lifting device is fixedly connected with a supporting column, a rotating disc is rotatably installed on the outer wall of the supporting column, three sets of syringes which are distributed circumferentially are rotatably installed on the rotating disc, and the three sets of syringes are connected with the main lifting device. A switching part for driving the turntable to rotate is arranged on the supporting column; the sample disc is rotationally mounted on the supporting frame through a first vertical shaft, a disc is rotationally mounted on the supporting frame through a second vertical shaft, and a plurality of circular holes are circumferentially distributed in the disc; by means of the sample feeding device, alternate sample feeding work of a plurality of samples can be rapidly achieved, the sample feeding and detecting efficiency of the samples is remarkably improved, the rubber pads used each time in the detecting process can be replaced, and the detecting efficiency and accuracy of the samples are guaranteed.

The application discloses a novel endoscope injection needle, which comprises a connecting plate, an insertion tube fixedly connected to the side wall of the connecting plate, a mounting cylinder in a cylindrical shape fixedly connected to the side wall of the connecting plate away from the insertion tube, a linear motor fixedly connected to the inner side wall of the mounting cylinder, a mover end of the linear motor fixedly connected to a liquid storage tank, a displacement sensor fixedly connected to the inner side wall of the mounting cylinder, an output end of the displacement sensor fixedly connected to the side wall of the liquid storage tank, two liquid storage cavities formed in the liquid storage tank, and an input hole formed in the side wall of each liquid storage cavity. The application has the advantages of reasonable design, ingenious idea, automatic control of the depth and dose of injection, elimination of the safety hidden danger of manual injection, sequential injection of two different medicaments, reinsertion for injection and reduction of the operation complexity.

The application discloses a method for analyzing nitrate / nitrite in water quality by sequential injection. The application can accurately sample and ensure complete reaction by setting a bubble detector and using an air column, and water samples and reagents are not in contact with pure water, and there is no diffusion dilution, so that the accuracy and reliability of the detection result are improved. By using the air action package, the accurate sampling of the liquid is further ensured, the complete reaction is ensured, the water sample and the reagent are not in contact with pure water, there is no diffusion dilution, so that the accuracy and reliability of the detection result are improved. The sequential injection module, the detection unit and the control unit are all modularly designed, users can flexibly replace detectors and reaction conditions according to detection requirements, the detection requirements of different water quality parameters are adapted, and the adaptability and expansibility of the system are improved.

The invention discloses a compounding process of wash supplies based on a glycoside natural surfactant, which belongs to the technical field of wash supply production, and comprises a compounding tank, a stirring motor mounted at the middle position of the top of the compounding tank, and a stirring shaft mounted at the output end of the stirring motor. The sequential injection mechanism is used in cooperation with the quantitative cylinder with the volume the same as the raw material configuration proportion, quantitative feeding and automatic sequential control of the raw materials can be achieved, part of electronic control logic is replaced through the mechanically-linked sequential injection mechanism, use of precise electronic elements such as a sensor and an electromagnetic valve is reduced, and the production cost is reduced. Compared with the prior art, the device has the advantages that the manufacturing cost and the failure rate of the device are reduced, meanwhile, through precise matching of a mechanical structure, it is ensured that deionized water, SOE-N, SNS-80, APG 0810 and other raw materials are sequentially input according to a preset formula sequence, errors caused by manual intervention and electronic element delay are reduced, the stability of the feeding process is remarkably improved, and the consistency of a compounding system is guaranteed.

This invention discloses a two-color sequential injection molding integration process and apparatus for automotive interior curved surface parts, relating to the field of injection molding technology. The two-color sequential injection molding integration process for automotive interior curved surface parts mainly includes the following steps: Step 1: Start the injection molding equipment, close the upper and lower molds, inject the base material melt into the cavity formed by the mold closing, and perform critical cooling after mold filling and pressure holding; Step 2: Separate the upper and lower molds. This invention eliminates the need for machining vacuum adsorption holes and connecting channels inside the mold core, and also eliminates the need for reserving installation interfaces for external vacuum pipelines, reducing the space occupied inside the mold core. Simultaneously, through the cooperation of drive and positioning components, the workpiece can be restricted and fixed to prevent it from falling off. Furthermore, the quality of the workpiece can be inspected to prevent situations where workpiece quality problems occur but secondary injection molding is continued, reducing scrap and avoiding resource waste.

The utility model discloses a long-strip thin part injection mold and an injection molding system. The long-strip thin part injection mold comprises an upper mold plate and a lower mold plate which are oppositely combined to form a cavity, a main glue injection opening and a plurality of time sequence glue injection openings are formed in the lower mold plate; the main glue injection opening is centrally formed in the lower mold plate in the length direction, and the time sequence glue injection openings are formed in the two sides of the main glue injection opening in the length direction of the mold cavity; the main glue injection opening comprises a glue sealing hole close to the outside relative to the cavity and an open groove close to the inside relative to the cavity, the thin opening end of the open groove is in butt joint with the glue sealing hole, and the open end faces the cavity. According to the utility model, the open groove type transition structure is arranged at the main glue injection port, so that glue injected from the main glue injection port can be quickly diffused, when the glue injected from the main glue injection port is diffused to the corresponding time sequence glue injection ports, the glue is injected successively through the time sequence glue injection ports, and the injection molding yield of long strip thin piece products can be effectively improved.

The invention discloses a sequential sampling device for expired gas detection. The sequential sampling device comprises an expired gas sample, a connecting pipeline, a first multi-channel valve group, a second multi-channel valve group, a gas source, a compound removal device, a quantitative loop, a sucking pump and a direct sampling mass spectrum system. The problem that qualitative and quantitative accuracy is affected due to competitive ionization of different types of compounds when a complex exhaled gas sample is analyzed by direct injection mass spectrometry is solved. Therefore, a sequential sampling technology is designed, specific types of components are sequentially removed through ingenious connection and control of an air pump, an air source, a multi-way valve, a compound removal device and a quantitative loop, and then the components enter a direct mass spectrum to be analyzed. Compared with a traditional GC separation method, the multi-channel selective removal sample introduction mode has the advantages of high flux and large sample introduction amount, competitive ionization and matrix effect influences generated when all components enter an ionization area at the same time can be effectively eliminated, and qualitative and quantitative accuracy is improved.

The invention provides a method for analyzing and optimizing fluid injection into an internal combustion engine via a common rail system. Once various injection parameters are determined for a given injection system, these data can be used to model the effects of sequential injection events for the system. A processor can then be used to run the model and adjust the sequential fuel injection events to optimize engine performance and fuel usage.

The invention relates to a storage basin with a service panel for a vehicle. A vehicle component includes a basin configured to store cargo and a service panel configured to cover at least a portion of a compartment defined by a vehicle. A living hinge couples the basin to the service panel. The basin, the service panel, and the living hinge are all integrally formed in a common mold, such as by injection molding in gate sequence. The component may include a side portion secured to the tube. The living hinge may include a first portion connecting the first side portion to the service panel and a second portion connecting the second side portion to the service panel. The basin is separable from the service panel between the first side portion and the second side portion. The upper edge of the tube may have a dust seal secured thereto that engages a cover configured to cover the compartment, such as a protective cover.