9results about How to "Constant flow" patented technology

An ink recirculation system for recirculating printheads comprising a housing in the interior of which two chambers, a series of pressure sensors, a vacuum generator and a pressure generator are disposed; the container has two entrances for transmitting signals towards the pressure sensors, a first feed connection to the printhead, a second flow connection to the printhead, a third ink feed connection, a fourth connection for returning the ink to the main tank and means for connecting and supporting the vacuum generator and the pressure generator. A compact assembly is achieved that can be mounted on a moving printing carriage, wherein it can be mounted in an easy and simple manner.

This utility model discloses a silicate ion measurement injection pressure stabilization device, comprising: an injection pipe, a pressure stabilization component, and a filter component; the pressure stabilization component includes a self-regulating pressure regulating valve and a flow controller fixedly connected to both sides of the injection pipe, a buffer tank fixedly installed on the upper part of the injection pipe, and an upper buffer cover and a lower buffer cover installed on the upper and lower sides of the buffer tank, respectively. According to this utility model, the water sample being transported in the injection pipe can have its pressure stabilized by the self-regulating pressure regulating valve, flow controller, and buffer tank installed on the injection pipe, ensuring a constant flow rate, thereby improving subsequent measurement accuracy, equipment stability, and data reliability. Simultaneously, the upper and lower buffer covers installed on the upper and lower sides of the buffer tank provide double-layer buffering for the water sample being transported from the injection pipe to the buffer tank during its descent, thus ensuring a stable flow rate of the water sample output through the output pipe.

The utility model belongs to the field of cigarette test board appliances, and particularly relates to a monitoring comparison rod for a cigarette / filter rod test board. The comparison rod comprises an outer pipe, a central pipe, a paper ventilation rate calibration assembly and a mouth ventilation rate calibration assembly, wherein a first through hole and a second through hole are respectively formed in the outer pipe along the axial direction; the central pipe is arranged in the lower part of the outer pipe; the paper ventilation rate calibration assembly is arranged in the middle of the outer pipe and corresponds to the first through hole in position. The paper ventilation rate calibration assembly is connected to the top of the center pipe in a sealed mode. The nozzle ventilation rate calibration assembly is arranged in the upper portion of the outer pipe and corresponds to the position of the second through hole. The nozzle ventilation rate calibration assembly is connected to the top of the paper ventilation rate calibration assembly in a sealed mode. The device can be used for calibrating the paper ventilation rate and the mouth ventilation rate measured by the cigarette test board, so that the accuracy of data measured by the cigarette test board is ensured.

An intelligent adjusting device for a fluid control valve comprises a detection mechanism and an adjusting mechanism, the detection mechanism is composed of a detection box body, a control panel and a flow sensor, and the adjusting mechanism is arranged on the detection box body of the detection mechanism. The adjusting mechanism is composed of an inlet pipeline, an adjusting motor, a flow adjusting plate, an installation support, a first electric telescopic rod, a blocking ball, an outlet pipeline, a confluence pipeline, a second electric telescopic rod and a blocking plate. If the actual flow is larger than the rated flow, the device can adjust the position of the flow adjusting plate through the control panel, so that the flow at the outlet of the valve body is constant, and user control is facilitated.

The application discloses a fresh water circulating aquaculture whole-process water treatment system and method, and belongs to the technical field of circulating aquaculture water treatment. The system comprises a water inlet treatment subsystem, an aquaculture pond subsystem and a tail water treatment subsystem which are sequentially and circularly connected. The water inlet treatment subsystem comprises a water storage tank, a sand filter tank and a filtered water tank which are sequentially connected. The aquaculture pond subsystem comprises a plurality of aquaculture pond circulation combinations, and each aquaculture pond circulation combination comprises an aquaculture pond cluster, a first microfilter, a circulating pump pond, a biological aerated filter, a disinfection pond, a decarbonization device and an oxygenation and temperature adjustment pond which are sequentially and circularly connected. The tail water treatment subsystem comprises a second microfilter, a sulfur autotrophic denitrification pond and an SBR reaction pond cluster which are sequentially connected. The system integrates fresh water circulating water treatment, tail water treatment and source water treatment, can meet the requirements of medium and large fresh water circulating aquaculture plants on aquaculture water quality, can save land occupation and investment, and meets the requirements of green and sustainable development.

The utility model discloses a screw assembly and a double-screw extruder for a reactive melt-blowing process, the screw assembly comprises two screws which have the same structure, rotate in the same direction and are meshed with each other, and each screw consists of a mandrel and a thread element; one end of the core shaft is a feeding end, the other end of the core shaft is a discharging end, and the core shaft can rotate under the action of external force; the threaded element is arranged on the mandrel in a sleeving mode and can rotate along with the mandrel. The screw assembly comprises a feeding section, a reaction section and an extrusion section which are connected in sequence, and the types, the leads and the lengths of internal thread elements in all the sections are reasonably arranged; therefore, conveying of low-viscosity raw materials, initiation of polymerization reaction, macromolecule growth and mixing, conveying and extrusion of high-viscosity polymerization products can be rapidly achieved in a continuous process, and a continuous polymer melt which is stable in pressure, constant in flow and easy to draw and thin is provided for a subsequent spinning assembly.

The invention discloses a flow-adjustable manual diaphragm valve, and relates to the technical field of valves. The flow-adjustable manual diaphragm valve comprises a valve body, a flow path, a diaphragm, a valve rod, a driving seat, an adjusting groove, an adjusting seat and an adjusting cavity, the valve rod is arranged in the adjusting cavity in a penetrating mode in the axial direction of the valve rod, a positioning part is arranged at the end, away from the diaphragm, of the valve rod, and positioning walls used for abutting against the positioning part are arranged at the two opposite ends of the adjusting cavity correspondingly. The two positioning walls are arranged in the axial direction of the valve rod. According to the manual diaphragm valve, the moving stroke of the valve rod can be adjusted by positioning the positioning part through the two positioning walls, so that the opening height and the closing height of the diaphragm can be adjusted, and then accurate flow adjustment of the manual diaphragm valve is achieved; meanwhile, the two positioning walls can position the valve rod, so that the adjusted flow is kept constant.

The invention discloses a double-rib induction quenching device for a steel track shoe. The double-rib induction quenching device comprises a medium-frequency inductor and a positioning device, the medium-frequency inductor comprises a water sprayer, an induction coil, a magnetizer, a fixing plate, a flow guide plate, an insulating plate, an insulating spacer, an insulating sleeve, a circulating water connector and a spraying water connector. The induction coil and the circulating water interface are fixed on the guide plate; the magnetizer is mounted on the induction coil; the fixed plate is fixed on the induction coil; a spraying water connector is arranged on the side wall of the water sprayer; the two circulating water interfaces are connected with the cavity of the induction coil and are used for introducing circulating water into the induction coil for cooling; the water sprayer is fixedly mounted on the fixing plate; and the positioning device is arranged close to an induction coil of the medium-frequency inductor and is used for positioning the steel track shoe. The method has a good effect on strengthening the landing ribs of the medium-carbon alloy steel track shoe with long and short arc-shaped ribs distributed in a staggered manner, and has the characteristics of high processing efficiency, good quality consistency, low labor intensity, low production cost and the like.

The utility model discloses a membrane spraying component and heating evaporation kettle, the membrane spraying component comprises a wall scraping and liquid spraying combined pipe, the wall scraping and liquid spraying combined pipe comprises a liquid spraying pipe and a scraper arranged on the liquid spraying pipe, the wall surface of the liquid spraying pipe is provided with a narrow slit liquid spraying port arranged along the axial direction of the liquid spraying pipe, and the scraper comprises a flat plate scraper. A knife edge parallel to the axis of the liquid spraying pipe is formed at the end, away from the liquid spraying pipe, of the flat scraper, the knife edge is close to a spraying path of the narrow-slit liquid spraying opening, and the spraying path of the narrow-slit liquid spraying opening and the scraper are not intersected. The membrane spraying assembly is novel in structure, different from the prior art that feed liquid flows from top to bottom, the heating evaporation kettle adopting the membrane spraying assembly can convey the feed liquid by utilizing the pressure of a fluid pump, the flow of the feed liquid is constant, the membrane forming consistency of the feed liquid sprayed out of the narrow slit liquid spraying opening is high, and the evaporation rate of the feed liquid is consistent; particularly, the heat transfer surface of the inner wall of the kettle can be kept clean due to the wall cleaning function of the scraper, so that the heat transfer between the heat transfer surface of the inner wall of the kettle and a feed liquid film is kept stable, and the evaporation rate of feed liquid is kept consistent.