17results about How to "Reduce injection pressure" patented technology

The utility model provides a color marking line mold for pipe fitting production. Relates to the field of pipe processing, and comprises color marking line injection ports distributed in the inner wall of a straight section of a die and color marking line supply ports distributed in the outer wall of the straight section of the die, and the color marking line injection ports are communicated with the color marking line supply ports through color marking line runners located in the straight section of the die; an opening in one side, close to the axis of the die straight section, of the color marking line injection port is communicated with an internal channel of the die straight section; the section, in the axial direction of the die straight section, of the color marking line injection port is triangular; in order to solve the problem that the color marking line is easily injected into the pipe blank and cannot be exposed to the surface in time at present, the color marking line injection port is arranged at the straight section of the mouth mold and the cross section of the color marking line injection port is triangular, and the color marking line injection port forms a certain angle, so that the injection pressure of the color marking line is reduced, and the production efficiency is improved. And extruding and covering the surface of the pipe blank to quickly form the color marking line of the pipe.

The application discloses a micro-fluidic chip reagent injection device, which comprises a liquid storage part with at least one quantitative sealed container, a flexible pressure-bearing membrane arranged on the top of the container body of the quantitative sealed container, a hard flow guide column arranged on the bottom of the container body, and a sealing membrane arranged on the liquid outlet; a liquid inlet part comprising a flow column and a liquid storage pool arranged on the micro-fluidic chip, the inner cavity of the flow column is matched with the outer diameter of the hard flow guide column, a gas guide channel is arranged on the contact surface of the flow column and the hard flow guide column for connecting the inner cavity of the flow column with the external environment, and a puncture part opposite to the sealing membrane is arranged on the flow column; wherein the hard flow guide column has a first plug-in position for making the puncture part puncture the sealing membrane when the hard flow guide column is pressed down. The device has the advantages of simple structure, low cost, convenient use, accurate quantitative injection and biological hazard prevention. The application also discloses a micro-fluidic chip reagent injection method.

The application provides a wafer level packaging method and a wafer level packaging structure. A transfer unit comprises a substrate, a plurality of first chips arranged on the substrate, and a first oxide layer arranged on the surface of the first chips. A device wafer comprises a substrate, a plurality of second chips arranged on the substrate, and a second oxide layer arranged on the surface of the substrate and the second chips. A UV pre-cured layer is formed on the edge of the substrate and is flush with the first chips. A UV adhesive layer is formed on the edge of the second chips and corresponds to the UV pre-cured layer. The UV pre-cured layer and the UV adhesive layer are bonded and cured into a UV cured connecting layer. The device wafer and the first chips are subjected to annealing treatment, so that the first oxide layer and the corresponding second oxide layer are subjected to fusion bonding, and the UV cured connecting layer is removed by decomposition. A first plastic encapsulation layer is formed at the position of the UV cured connecting layer, and the substrate is removed. A second plastic encapsulation layer is formed to cover the pores between the first chips, thereby avoiding the thermal stress problem of the heterogeneous material interface.

This invention provides a deep moderating and displacement system suitable for fractured reservoirs, its preparation method, and its application. The moderating and displacement system comprises the following raw materials in parts by weight: 0.2-1 parts of partially hydrolyzed polyacrylamide (HPAM), 0.1-0.6 parts of polyethyleneimine (PEI), 0.2-0.4 parts of silane-modified micron-sized inorganic fibers, 0.1-0.8 parts of encapsulated citric acid, 0.02-0.2 parts of heat stabilizer, 0.02-0.1 parts of metal ion complexing agent, and 196.9-199.36 parts of water. The moderating and displacement system of this invention has low initial viscosity, small injection pressure gradient, strong shear recovery ability, significant deep plugging effect, and excellent long-term thermal stability. Furthermore, it can be adjusted according to the target reservoir temperature and the dominant fracture aperture, achieving effective adaptation to fractured reservoirs with different apertures.

The present invention discloses a polymer melt composite vibration injection molding device, including an injection molding machine, a composite vibration system, and an injection mold, wherein the biggest difference from ordinary injection molding lies in the composite vibration system of the device. The composite vibration system includes a medium- and low-frequency hydraulic vibration system and a high-frequency ultrasonic vibration system. The hydraulic vibration is composed of a hydraulic pump, a rotary valve, a hydraulic cylinder, and a vibration rod. The vibration rod extends into the polymer melt flow channel, and the number is even. It can be divided into two groups and reciprocates in the same direction or in the opposite direction to achieve pressure vibration or shear vibration of the melt. The ultrasonic vibration system is composed of an ultrasonic generator, a transducer, a horn and a vibration rod. The ultrasonic vibration rod extends into the polymer melt flow channel and directly acts on the melt. The device can significantly reduce the melt viscosity and is suitable for thin-walled or large injection molded parts that are difficult to fill, as well as injection molded parts with many weld marks or poor weld mark strength.

This invention discloses a disposable foldable implantable intraocular lens (IOL) implanter. The implantable head is installed at the front end of the injector body and includes a movable flap, a fixed flap, and a folded lens portion. The folded lens portion is located at the front end of the central axis of the implantable head, the fixed flap is located at the rear end of the folded lens portion and connected to it, and the movable flap is located to the right of the fixed flap. The movable flap and the fixed flap are connected by a folding plate, and the movable flap can rotate based on the folding plate. The inner cavity of the folded lens portion includes a tail end and a tip end. The movable flap has a pre-loading groove for the lens near the central axis, and the fixed flap has a pre-loading groove for the lens near the central axis. The diameter of the pre-loading groove for the movable flap is less than or equal to the diameter of the tail end of the inner cavity of the folded lens portion. This invention is ingeniously designed, easy to operate, easy to insert but difficult to remove, prevents reuse, and is less likely to damage the lens when folded. When the lens passes through the inner cavity of the implantable head, it is less likely to scratch the lens, thus improving safety.

The high-pressure injector capable of adjusting the injection pressure in real time comprises a machine body, a piston rod arranged in the machine body and a driving mechanism controlling the piston rod to stretch and move, a needle cylinder is detachably installed at the position, corresponding to the piston rod, of the machine body, and the piston rod can reciprocate in the needle cylinder. Pressure sensors are mounted at the ends of the piston rods; a displacement detection assembly is arranged in the machine body; a control module is integrated in the machine body, and the driving mechanism, the pressure sensor and the displacement detection assembly are all in electrical feedback connection with the control module. When the pressure sensor monitors that the internal pressure of the needle cylinder reaches a critical value, the control module can control the piston rod to retreat by a certain stroke through the driving mechanism and then control the piston rod to decelerate and advance forwards. The utility model has the beneficial effects that a contrast agent can be prevented from being injected into the blood vessel of a patient under the condition that the critical pressure is exceeded, so that the conditions of vascular rupture, vascular intima injury, contrast agent exosmosis and the like are prevented.

The present invention provides a lower mold of a power plug, including a lower mold body, a first module is provided at the rear end of the lower mold body, three electrode sheet molds of the power plug are provided at the front of the first module, a second module is provided at the front end of the lower mold body, at least two lower mold areas are provided in the middle of the lower mold body between the first module and the second module, the lower mold area is the main lower mold of the power plug, and a plurality of transversely arranged exhaust grooves are provided on the lower mold body outside the lower mold area, a lower mold feed hole is provided at the center of the lower mold body, the feed hole is connected to the main feed trough, and the main feed trough is connected to the lower mold area through the feed trough, and a lower mold water inlet pipe and a lower mold water outlet pipe are provided at the rear end of the lower mold body, respectively, and the lower mold water inlet pipe and the lower mold water outlet pipe are respectively connected to the inlet and outlet ends of the lower mold water cavity inside the lower mold body. The structures of the upper mold body and the lower mold body match. The mold structure of this scheme is simple and low in cost, and the production process is simplified when used, which improves work efficiency.

The application provides an oil displacement method, which comprises the following steps: firstly, injecting a drag-reducing and injection-increasing agent into a low-permeability oil reservoir, modifying the surface of rocks by the drag-reducing and injection-increasing agent, modifying the surface of rocks into a hydrophobic and oleophobic double-scarcity state, reducing injection pressure, and playing a role of reducing pressure and increasing injection; and then injecting an oil displacement agent, and realizing efficient displacement of deep residual oil and remaining oil in the oil reservoir by the low flow resistance and strong oil washing capacity of the oil displacement agent.

The invention relates to the technical field of plastic mold injection molding intelligent control, in particular to a plastic mold injection molding intelligent control method and system, and the method comprises the following steps: obtaining parameter information in an injection molding production process; monitoring the parameter information, and identifying continuous one-way drift or abnormal fluctuation in the parameter information; based on the parameter information and the continuous one-way drifting or abnormal fluctuation, judging the source of the continuous one-way drifting or abnormal fluctuation; and according to the judgment result, a control strategy of the production process is adjusted, and when the source is physical wear of the mold, the injection speed and the injection pressure are reduced, and the pressure maintaining pressure is increased or the pressure maintaining time is prolonged. Parameter abnormity caused by physical abrasion of the mold in the injection molding production process can be effectively recognized, the control strategy is adjusted in a targeted mode, the service life of the mold is effectively prolonged, the product percent of pass is increased, and the production cost is reduced.

This utility model relates to the field of oil extraction, specifically to a sealing and isolating device; it includes an upper connecting unit, a desealing unit, a sealing unit, a lower connecting unit, and an anti-backflow unit; one end of the desealing unit is connected to the upper connecting unit, and the other end is connected to the sealing unit; the sealing unit is connected to both the lower connecting unit and the anti-backflow unit; and the lower connecting unit is connected to the anti-backflow unit. This device has a reasonable structure and is easy to operate. It greatly simplifies the construction process for renovating old wells in oil fields, reduces labor intensity, lowers operational risks, and reduces construction costs.

Provided are a recombinant human hyaluronidase formulation and an application thereof, the recombinant human hyaluronidase formulation comprising: recombinant human hyaluronidase, a buffer, a stabilizer, and a non-ionic surfactant, the stabilizer being selected from one or more of trehalose, sucrose, mannitol, sodium chloride, and methionine, and having the ability to maintain the stability of recombinant human hyaluronidase under 2-8 °C conditions; the hyaluronidase formulation can be applied in the preparation of a drug assisting subcutaneous infusion; same can enable a large volume infusion drug originally only able to be administered intravenously to be administered by means of subcutaneous infusion, and is more convenient, safe, and comfortable in clinical use.

The invention relates to the technical field of injection molding, in particular to an injection molding machine for automobile decorating parts, which comprises a charging barrel, an injection machine, a mold and a base, the injection machine is mounted on the upper end face of the base, the charging barrel is connected with the tail of the injection machine, and the mold is further mounted on the base. When the decorative part is subjected to injection molding, the multiple adjusting ejector pins on the demolding mechanism abut against the ribs and the inclined ejector plates correspondingly, the ejection force borne by the decorative part when the decorative part is separated from the mold is moderate by adjusting the pre-tightening force, residues of injection molding materials on the outer surface of the decorative part are reduced through the arrangement of the auxiliary pouring gate, and meanwhile the injection molding efficiency is improved. And the ejection needle on the ejection mechanism separates the residual injection molding material from the decorating part main body, so that the possible regional deformation of the decorating part in the demolding process is avoided, the smoothness of the outer surface of the decorating part can be improved, and the yield of finished decorating parts is ensured.

This application relates to the field of fuel cells, disclosing an integrated injection current collector and its processing method, an inlet end assembly, and a fuel cell stack. The integrated injection current collector includes a current collector body and a sealing compound. The sealing compound is injection molded and bonded to the current collector body. The sealing compound covers the circumferential edges of each of the two sets of three-cavity ports on the current collector body and isolates them from the medium of the fuel cell stack. A sealing protrusion perpendicular to the current collector body is provided on both circumferential sides of each cavity of the sealing compound, and each sealing protrusion extends outward beyond the side of the current collector body itself. The integrated injection current collector, its processing method, inlet end assembly, and fuel cell stack of this application integrate the seal between the integrated injection current collector and the single cell and the inlet end insulation plate into one unit, eliminating the need for double-sided sealing strips on the single cell, isolating the three cavities from the medium, and eliminating the need to process sealing grooves on the core side of the inlet end insulation plate, thus eliminating cumulative errors and improving sealing performance.

The invention discloses a wound debridement device, and relates to the technical field of debridement devices, the wound debridement device comprises a liquid supply main machine, the liquid supply main machine is connected with a debridement piece through a pipeline, the debridement piece comprises a handheld part, the two ends of the handheld part are connected with a debridement head and a water inlet head respectively, the wound debridement device further comprises a water spraying assembly and an adjusting assembly, and the water spraying assembly comprises a movable piece arranged in the debridement head; a flow guide part is slidably connected into the movable part in a sealed mode, one end of the flow guide part is fixedly connected with a limiting part, a communicating part is arranged between the flow guide part and the limiting part, the adjusting assembly comprises a connecting part arranged in the debridement part, and one end of the connecting part is fixedly connected with the end, extending out of the movable part, of the communicating part. When different degrees of wound surfaces of a patient are debrided through the debridement piece, the angle of the obtuse included angle formed between the injection opening of the debridement head and the handheld part by means of the liquid outlet direction of the movable piece is further enlarged, and discomfort and secondary injury of the patient during debridement are prevented.

An apparatus includes a pressure regulator, an in-cylinder fuel injector, and a controller programmed to, upon fueling with a first gaseous fuel, command the regulator to regulate a pressure of the first gaseous fuel to a first injection pressure, and commanding the injector to inject an injection amount of a first gaseous fuel into the combustion chamber at a first injection pressure within 90 CA DEG of the TDC during the compression stroke; and while refueling with the second gaseous fuel, commanding the regulator to regulate the pressure of the second gaseous fuel to a second injection pressure, and commanding the injector to inject an injection amount of the second injected gaseous fuel within 90 CA DEG of the TDC during the compression stroke.

The invention discloses a wide-distribution zirconium oxide-aminated carbon quantum dot nanofluid as well as a preparation method and application of the wide-distribution zirconium oxide-aminated carbon quantum dot nanofluid. The nanofluid comprises nano zirconium oxide, aminated carbon quantum dots and water, and the aminated carbon quantum dots comprise carbon quantum dots and polyethyleneimine connected with the carbon quantum dots through amido bonds; the solid content of the nano fluid is 0.001 to 0.2 percent. The zirconium oxide-aminated carbon quantum dot composite nanoparticles are wide in particle size distribution and can enter various fine pore throats in rock stratums, the swept volume of micro gaps is increased in an all-around mode, and then the exploitation efficiency of low-permeability / ultra-low-permeability oil fields is improved. PEI is utilized to modify the carbon quantum dots, amino groups are introduced to the surfaces of the carbon quantum dots, the aminated carbon quantum dots are electropositive in the nanofluid and can serve as a cationic surface active agent to stabilize the nanofluid, no additional surface active agent needs to be added, meanwhile, the aminated carbon quantum dots and carboxylic acid groups of crude oil form ion pairs, and the targeted oil finding function is better achieved.