54results about How to "Accurate injection volume" patented technology

The invention provides a device for the vacuum-pumping injection of a micro-thermal tube, which is formed by a vacuum-pumping portion, a micro-liquid calibration portion and an injection portion, wherein the vacuum-pumping portion is formed by a vacuum pump and a capillary flexible pipe, one end of the capillary flexible pipe is connected with the vacuum pump, and the other end is sealed with the injection hole of the micro-thermal tube through an injection needle, the micro-liquid calibration portion is formed by a capillary flexible pipe and a mini-size pliers which is used to clamp the flexible pipe to block liquid or gas in the pipe, and the injection amount is calibrated through the length of the capillary flexible pipe, and the injection portion is formed by a capillary flexible pipe, an injection needle and a syringe, wherein liquid is injected into the capillary flexible pipe through the syringe and the injection needle, the injection needle is penetrated into the capillary flexible pipe through the injection hole, and the three portion commonly share the same capillary flexible pipe and the same injection hole, and therefore the three portions are combined by the capillary flexible pipe to connect with a to-be-injected micro-thermal tube. The device of the invention has the advantages of simple structure, smart design, and high injection amount control precision, high vacuum-pumping precision and convenient and reliable operation.

The embodiment of the invention discloses an SCR (Selective Catalytic Reduction) control method and device. The method comprises the following steps: firstly, obtaining the upstream NOx mass flow of target SCR; secondly, calculating the ammonia nitrogen ratio, the NOx conversion efficiency, the NH3 storage or desorption rate and the closed-loop correction coefficient corresponding to the target SCR; and finally determining the urea injection amount of the target SCR according to the upstream NOx mass flow, the ammonia nitrogen ratio, the NOx conversion efficiency, the NH3 storage or desorptionrate and the closed-loop correction coefficient of the target SCR. According to the method, after the upstream NOx mass flow of the target SCR is obtained, closed-loop control treatment is not directly performed after simply converting the upstream NOx mass flow into required NH3, but the ammonia nitrogen ratio, the NOx conversion efficiency and the NH3 storage or desorption rate are firstly utilized to treat the upstream NOx mass flow, and then the closed-loop correction coefficient is utilized for further treatment, so that the urea injection amount can be more accurately determined and used for reacting ammonia with NOx, and the NOx emission amount and the ammonia leakage amount can meet the national VI emission regulations of heavy-duty diesel engines.

The invention discloses an automatic thickened oil detection system which comprises a detection container, a crude oil water content analysis meter, a stirring device and a liquid level sensor. An exhaust device is arranged on the top of the detection container. An oil inlet of the detection container is connected to a crude oil main pipe through a first check valve and a first electric valve, and a flowmeter is arranged between the connection point and the connecting-in point of the crude oil main pipe. The stirring device is installed at the bottom of the detection container and connected to the crude oil main pipe through a second electric valve, a booster pump and a second check valve. The crude oil water content analysis meter is connected into the detection container to be used for detecting the water content of thickened oil inside the container. The liquid level sensor is arranged on the detection container and connected to the first electric valve to be used for detecting the height of the thickened oil in the detection container and controlling the first electric valve to be closed when the height of the thickened oil is larger than a preset value. The invention further provides an automatic oil extraction assistant injection amount adjusting system. By the adoption of the automatic thickened oil detection system, on-line automatic thickened oil detection can be achieved.

The invention discloses an electrolyte vacuum stirring bubble-removal device with a self-cleaning function. The device comprises a master controller, a vacuum stirring device, a liquid storage device, a self-cleaning device and a liquid injection device. In allusion to the liquid injection motion of the liquid storage device towards the liquid injection device, a liquid injection pump and a liquid injection pump controller for controlling liquid injection frequency and liquid injection amount is configured. Through the arrangement and cooperation of the vacuum stirring device and the liquid storage device, double electrolyte bubble-removal processing is carried out in the vacuum stirring device and the liquid storage device. Under the action of the liquid injection pump controller and the liquid injection pump, the bubble-removed electrolyte is accurately injected to the liquid injection device according to corresponding liquid injection frequency and liquid injection amount. Thus, it is ensured that there is no bubble in the electrolyte in a battery. The self-cleaning device can be used to automatically clean the liquid injection pump, the liquid storage device and the liquid injection device, so as to prevent crystallization and solidification of residual electrolyte. Thus, stability and reliability of subsequent liquid injection process are not influenced. The device provided by the invention has high degree of automation and is easy to operate and manage.

The invention discloses a liquid adding and oscillation integration device used for textile verification. The device comprises a bottom plate, wherein the front end and the rear end of the left side of the upper surface of the bottom plate are independently fixed with a front side vertical plate and a rear side vertical plate in parallel; the side surface of the front side vertical plate is fixedly provided with a PLC (Programmable Logic Controller) through a fixed mount; the input end of the PLC and the output end of an external power supply are electrically connected; the upper end of the front side surface of the front side vertical plate is fixedly provided with a first supporting plate; and the upper surface of the first supporting plate is fixedly provided with a first stepping motor. When a material containing barrel moves back and forth, positioning is accurate, and in addition, the material containing barrel can conveniently vertically move. The liquid adding and oscillation integration device used for textile verification is convenient in operation, convenient and intelligent, does not need to occupy the working time of experiment personnel, and can obviously reduce the labor cost of a laboratory. A sliding plate downwards moves for a set distance so as to finish injecting solution into a test tube, and errors brought by manually adding liquid can be avoided so as toimprove detection accuracy.

The invention discloses a vacuumizing, liquid filling and sealing device for a plate multi-channel heat pipe. The vacuumizing, liquid filling and sealing device comprises a vacuum cavity connected with a vacuum valve, a quantitative liquid filling pump, a liquid filling plate and sealing molds; a cavity is formed in the liquid filling plate, one end of the liquid filling plate is provided with a liquid inlet connected with the quantitative liquid filling pump, and the other end of the liquid filling plate is provided with a plurality of liquid filling holes of which the number is the same as that of channels of the plate heat pipe and the positions correspond to those of the channels of the plate heat pipe one to one; the liquid inlet is connected with the quantitative liquid filling pumpthrough a pipeline, and the end with the liquid filling holes vertically stretches into the vacuum cavity from the upper end of the vacuum cavity in a sealing and matching mode; and sealing ports usedfor allowing the plate heat pipe to be filled with liquid to stretch into the vacuum cavity in a sealing and matching mode are oppositely arranged at the lower end of the vacuum cavity, and the sealing molds are arranged in the vacuum cavity and located on the two sides of the plate heat pipe. The invention further discloses a vacuumizing, liquid filling and sealing method for the plate multi-channel heat pipe. According to the vacuumizing, liquid filling and sealing device and method for the plate multi-channel heat pipe, the efficiency is high, the cost is low, the filling amount of all thechannels is same and precise, and the vacuumizing, liquid filling and sealing device and method are suitable for filling volatile and toxic working media.

A control method for an injection molding machine, comprising the steps of: establishing a basic specific volume, a base injection starting position, a basic VP switching position, and a pVT characteristic; and then recording the position of a screw to generate a molding injection starting position; recording the pressure and temperature in a material tube to generate the mold pressure value and the mold temperature value; then calculating a mold specific volume according to the mold pressure value, the mold temperature value and the pVT characteristic; and calculating a mold VP switching position according to the molding injection starting position, the ratio between the mold specific volume and basic specific volume, and the difference between the base injection starting position and a basic VP switching position; finally, controlling the motor to drive the screw to move forward according to the information of the mold VP switching position. In this way, the VP switching point can beadjusted according to the specific value and position difference of each mode, thereby ensuring the uniform weight of the finished product.

The invention relates to a hydraulic sampling device and a hydraulic sampling method for treating a biological sample solution microfluidic chip. The hydraulic sampling device comprises a liquid container(1) which contains an incompressible liquid immiscible with a sample solution; a power source(2) which drives the liquid to enter a buffer bottle(4) through an input pipe(3); and the buffer bottle(4) containing a sample solution to be injected; when the power source(2) drives, the liquid enters the buffer bottle(4) via the input tube(3) to increase the hydraulic pressure, so that the sample solution stably and controllably enters the microfluidic chip(6) via an output tube(5).

The invention discloses an accurate trace-amount acupoint injection pen which comprises a pen shell, an injector, a driving device, a push rod, an inductive sensor, a triggering circuit, a triggering device, a control panel, a control circuit board and a power supply.The driving device, the push rod and the injector are sequentially arranged in the pen shell from top to bottom, the driving device is connected with one end of the push rod, and the other end of the push rod abuts against the tail end of an injector piston.The inductive sensor is arranged on the inner wall of the pen shell.The control circuit board and the power supply are arranged at the upper portion inside the pen shell, and the control panel is arranged on the outer surface of the pen shell.The accurate trace-amount acupoint injection pen is different from a common muscle injector and can easily complete two actions of post-transdermal suction and injection.Even if an unskilled person uses the injection pen, the injector does not shake and shift, medical negligence is effectively prevented, and the accurate trace-amount acupoint injection pen facilitates large-area popularization and usage of an acupoint injection technology.The accurate trace-amount acupoint injection pen achieves safer, more accurate and trace-amount acupoint injection and is easy to operate and popularize.

The invention provides an injection device and relates to the technical field of medical equipment. The injection device comprises an extrusion part, an end cap, an adjustment housing and a push rod;one end of the extrusion part is used for abutting against a piston and used for moving up and down along the inner wall of a mixing housing; the adjustment housing sleeves the upper end of the outside of the extrusion part; the outer wall of the adjustment housing is provided with a bump; one end of the adjustment housing far away from the extrusion part is provided with a through hole for the push rod to pass through; the inner wall of the end cap is provided with a scale groove matched with the bump, and the scale groove extends in the axial direction of the end cap. The scale groove and the bump are disposed at the top of the device, which can facilitate a user's observation and enables the touch to be good.

The invention discloses an economical efficient mixed water and fertilizer simultaneous application system and method. The economical efficient mixed water and fertilizer simultaneous application system comprises a liquid fertilizer treatment assembly and a solid fertilizer treatment assembly which are arranged in a pump room, wherein the liquid fertilizer treatment assembly comprises a liquid fertilizer pool, the solid fertilizer treatment assembly comprises a material soaking pool, the material soaking pool communicates with a solid fertilizer pool, a pipeline mechanism communicates between the liquid fertilizer pool and the solid fertilizer pool, the water inlet end of the pipeline mechanism communicates with a water inlet, and the water outlet end of the pipeline mechanism communicates with a water outlet; the water inlet and the water outlet are both formed in the wall of the pump room, and the pipeline mechanism is electrically connected with a control system. The economical efficient mixed water and fertilizer simultaneous application system and method are low in production cost, convenient to use, more beneficial to popularization and use in simple agricultural water and fertilizer integrated irrigation, high in system accuracy and excellent in water and fertilizer integrated irrigation working efficiency,, the structure is simple, and operation is easy.

The invention discloses an injection molding mechanism capable of evenly heating and efficiently plastifying. The injection molding mechanism comprises a heating screw rod (1), a heating cavity (2), a charging barrel (3) and a sprue bush connection end (4), and also comprises a rafael net (5), wherein the heating screw rod (1) is horizontally arranged inside the rafael net (5); one end of the rafael net is connected with a motor; the motor drives the rafael net (5) to rotate; the rotation direction of the rafael net (5) is reverse to that of the heating screw rod (1); a screw cooling water pipe is arranged on the outer surface of the lower end of the charging barrel (3); a conical baffle plate (6) of which the top and the bottom are communicated is arranged inside the heating cavity (2); the narrow end of the conical baffle plate (6) is communicated with the sprue bush connection end (4); the round edge of the wide end of the conical baffle plate (6) is connected with the heating cavity (2). The injection molding mechanism can fully agitate, the plastifying homogeneity is improved, the situation that the injection molding particles are fused in the charging barrel to block a discharge hole is avoided, the pressure at the end of the sprue bush is kept constant, and the actual injection molding amount is accurate.

The invention relates to a constant pressure and temperature retention enema syringe. In the constant pressure and temperature retention enema syringe, a bottle body (8) is a threaded hole cylindrical sealed vessel, a graduation line is arranged on a cylinder surface, the bottle body (8) is in threaded connection with a bottle cover (9) through a silicone cushion (5) and a filter film (7), the bottle cover (9) is provided with two via holes in which a gas inlet plug (4) and an infusion plug (6) are inserted, and the lower port of the infusion plug (6) approaches the bottle bottom; one end of a gas inlet pipe (3) is inserted into the upper end of the gas inlet plug (4), and one end of an infusion tube (10) is inserted into the upper end of the infusion plug (6); and the other end of the gas inlet pipe (3) is inserted into an electric air pump through a one-way valve (2), and the other end of the infusion tube (10) is inserted into an anal tube (13) through a one-way valve (11) and a constant temperature heater (11). The invention satisfies the requirements of accurate injection rate, convenient operation, uniform velocity, constant temperature, filtering, simple flow and ideal treatment effect without backflow or uncomplete injection.

The invention relates to a micro-injection pump. The micro-injection pump comprises a pump body and a driving device; the pump body is internally provided with a liquid supply cavity, a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is communicated with one end of the bottom of the liquid supply cavity, the liquid outlet channel is communicated with the other end of thebottom of the liquid supply cavity, and a liquid inlet pipe is arranged at the tail end of the liquid inlet channel; a liquid outlet pipe is arranged at the tail end of the liquid outlet channel, aninlet one-way valve is arranged on the liquid inlet pipe, an outlet one-way valve is arranged on the liquid outlet pipe, and the driving device comprises a shell, a top cover, a piezoceramic driver, adriving base, connecting arms, a driving rod and an elastic press membrane; the connecting arms are connected between the driving base and the shell, the upper end of the driving base is provided with a mounting groove of a piezoceramic starter, the top cover is arranged at the top of the driving base, the upper end of the driving rod is connected with the lower end of the driving base, the lowerend of the driving rod is connected with one end face of the elastic press membrane, and the other end face of the elastic press membrane and the liquid supply cavity surround a pump cavity. The micro-injection pump has the advantages that the vibration abatement capability is good, and the injection amount is precise.

The invention relates to a quick feeding machine for electronic cigarette juice. The quick feeding machine comprises a platform, an oil pump, a feeding cylinder, a slideway and an oil injector are arranged on the surface of the platform, the oil pump is arranged on one side of the slideway, the feeding cylinder is arranged at one end of the slideway, a pipeline at one end of the oil pump is connected with an oil tank, a pipeline at the other end of the oil pump is connected with an oil injector, the other end of the oil injector is connected with a pipeline of the oil injector, and the oil injector is arranged above a middle part of the slideway. The quick feeding machine for the electronic cigarette juice has the advantages that a fixture is driven by the feeding cylinder, the oil pump and the oil injector cooperate to inject juice into multiple products at the same time, so that the quick feeding machine is automatic in operation, high in processing efficiency and precise in injection quantity.