15results about How to "Increase injection volume" patented technology

The present invention provides an injection device, belonging to the field of injection molding technology, comprising: an injection cylinder, a rotary motor and a screw are sequentially arranged along the injection direction, wherein the injection cylinder comprises a cylinder body, a piston rod connected to the screw is built therein, and a wear-resistant belt and a flat key are arranged at one end of the piston rod connected to the screw; the rotary motor comprises a stator and a rotor arranged inside and outside, and a slide groove is arranged on the inner wall of the rotor to form a keyway with the flat key, and the slide groove runs through both ends of the rotor along the axis direction of the rotor, wherein the moving stroke of the flat key is the overall length in the axis direction of the rotor, and the linear movement of the screw is driven by the translation of the piston rod, and the piston rod and the screw are driven to rotate synchronously by the rotor. The present invention expands the injection stroke of the piston rod by increasing the moving stroke of the flat key, thereby increasing the single injection volume, thereby improving work efficiency, and ensuring the concentricity of the piston rod and the screw.

The invention relates to the technical field of desert planting, in particular to a desert greening project construction method which comprises the steps that desert soil is loosened, water-retaining agent injection and pH value adjusting operation are sequentially conducted on the desert soil, and vegetation planting is conducted after pit digging is conducted through a pit digging machine; the vegetation is fertilized, a water supply pipeline is established to irrigate the planted vegetation, and the vegetation is regularly maintained and monitored; respectively obtaining the survival number of the vegetation and the total planting number of the vegetation; determining the construction stability of the desert greening project based on the planting survival rate of the vegetation; if the construction stability does not meet the requirement, adjusting the fertilization period of the vegetation, or determining the growth resource supply effectiveness of the vegetation based on the pH value difference quantity of the desert soil at different depths; and if the growth resource supply effectiveness does not meet the requirement, adjusting the injection amount of the water-retaining agent. The construction stability of the desert greening project is improved.

The invention relates to the technical field of valve production, in particular to equipment for producing large-diameter pipe fitting valve plastic products through a mold pressing method. The equipment for producing the large-diameter pipe fitting valve plastic product through the mold pressing method comprises a feeding table, a sliding rail and a hydraulic machine, an extrusion mechanism is installed at the upper end of the feeding table, and the extrusion mechanism comprises an extrusion box and a stock bin; the sliding rail is located on one side of the feeding table, and a sliding table is installed on the sliding rail in a sliding mode. A temperature control box and a forming mold are installed at the upper end of the sliding table. A hydraulic machine is further arranged on one side of the sliding rail. A hydraulic assembly is installed at the upper end of the hydraulic machine. According to the equipment for producing the large-diameter pipe fitting valve plastic product through the mold pressing method, production raw materials can be extruded or poured into a forming mold cavity after being continuously plasticized in the extrusion mechanism, the raw material heating time is shortened, and the staying heating time of the production raw materials in an injection molding machine barrel is shortened; and due to continuous plasticizing, the injection molding amount of the production raw materials can be continuously increased without being limited.

The minimally invasive bone cement hollow screw injection assembly comprises a hollow screw provided with a bone cement extrusion hole in a screw rod, and is characterized by further comprising an inner sleeve inserted into an inner cavity of the head of the hollow screw in a butt joint mode, an outer sleeve sleeved on the inner sleeve in a guiding fit mode and a core ejecting rod penetrating through the inner sleeve in a guiding fit mode and stretching into the hollow screw; the outer sleeve sleeves the head of the hollow screw in a threaded fit mode. The inner sleeve extends upwards from the inner cavity of the head of the hollow screw to be conveniently in butt joint with an injector, the inner sleeve is supported and positioned through the outer sleeve, stability and reliability of butt joint of the inner sleeve and the hollow screw in the bone cement injection process are guaranteed, and bone cement in the inner sleeve and the hollow screw is extruded out through the ejector core rod. The injection amount of bone cement is increased, the operability and convenience of bone cement injection are improved, the injection amount requirement of osteoporosis patients is met, and practicability is high.

This invention discloses a step-by-step, segmented tunnel curtain grouting construction pipe assembly, device, and construction method, including multiple construction kits. Each kit includes two grouting pipes and one vacuum pipe for insertion into grouting holes at different depths. Each grouting pipe is composed of multiple first grouting pipe segments connected sequentially. The vacuum pipe is composed of multiple interconnected vacuum pipe segments and multiple isolation pipe segments connected at intervals. Each isolation pipe segment has a double-layer sleeve structure, including a second grouting pipe segment with inner and outer sleeves interlocked and an isolation sleeve. The two ends of the isolation sleeve are sealed to the outer walls of the two ends of the second grouting pipe segment, forming a closed, expandable cavities. Using this device and method ensures that cement grout is fully injected into the surrounding rock strata, increases the injection volume of grout, and forms a uniform network of grout veins within the surrounding rock, resulting in good reinforcement. It also effectively controls the grout diffusion range and avoids waste caused by disordered material diffusion.

The present invention belongs to the field of petrochemical industry, and specifically provides a special fuel suitable for strengthening compression ignition engines, wherein the special fuel is composed of coal-based diesel, tripropylene glycol methyl ether, anti-wear agent, antioxidant and metal corrosion inhibitor. Compared with traditional automotive diesel, the special fuel has a higher cetane number, better lubricity and higher oxygen content; it ensures that the power performance can still be improved at the maximum throttle opening of the strengthened engine, and also ensures that the engine does not detonate under high load; better lubricity can reduce the wear and blockage of precision parts such as diesel engine injector needle valve pairs and fuel injection nozzles, and improve the running stability of the engine. At the same time, it does not contain a cetane number improver, which avoids the disadvantages of the special fuel in a closed and poor light-shielding condition, such as the decomposition of the cetane number improver, and the increase of fuel acidity to corrode metal parts.

The invention relates to the technical field of organic photoelectric material preparation, in particular to a phenanthroline compound containing a benzo five-membered nitrogen heterocycle, an organic electroluminescent device and a display or lighting device. The phenanthroline compound of the invention contains a benzo five-membered nitrogen heterocycle, and the phenanthroline structural fragment is modified with an aromatic group, so that the compound has excellent luminous efficiency and good thermal stability; at the same time, the phenanthroline compound containing a benzo five-membered nitrogen heterocycle provided by the invention can largely limit the lateral dispersion of electrons and improve the longitudinal mobility. When used in a device, the organic light-emitting device can effectively have a lower driving voltage and maintain voltage stability, and the luminous efficiency is improved.

The invention relates to a low-nitrogen pulverized coal burner suitable for ultra-low load and a burning method, and belongs to the technical field of pulverized coal furnace burning. The pulverized coal burner is provided with a pulverized coal channel and a rich-lean separation device, the rich-lean separation device is composed of multiple stages of separation baffles, and all the stages of separation baffles are sequentially arranged in the axial direction of the pulverized coal channel. The pulverized coal channel is divided into a first-stage concentrated phase channel and a first-stage light phase channel through a first-stage separation baffle; the first-stage concentrated phase channel is divided into a second-stage concentrated phase channel and a second-stage light phase channel through a second-stage separation baffle; the (n-1) th-stage concentrated phase channel is divided into an n-stage concentrated phase channel and an n-stage light phase channel through an n-stage separation baffle; and a hydrogen swirl nozzle and an igniter are arranged in the n-stage concentrated phase channel. The method can be applied to the scene of deep peak regulation of the coal-fired boiler, the problem of heat efficiency reduction caused by ultralow-load operation is comprehensively considered and solved, and safe, efficient and environment-friendly operation of the pulverized coal boiler under the ultralow-load working condition is achieved.

The present invention belongs to the technical field of rack processing, and specifically is a rack processing equipment, comprising a machine base; an electric slider is slidably connected to the end of the machine base; a support frame is fixedly connected to the top of the electric slider; a water tank is fixedly connected to the outside of the support frame; a plurality of knives on a No. 1 knife roller and a No. 2 knife roller are used to cut a plurality of strip processing parts, so as to play a role in cutting and manufacturing large quantities of racks, two limit frames are used to squeeze and clamp the strip processing parts from both ends, and the strip processing parts are limited and fixed to improve the stability of rack processing, a No. 1 water pump is used to extract cutting fluid and send it to a No. 2 nozzle box and a baffle to rinse the cutting area, thereby improving the manufacturing effect of the rack, relying on a collection tank to collect waste chips and cutting fluid generated by cutting, and a filter screen is used to filter the waste chips in the cutting fluid, so as to facilitate the recycling of the cutting fluid.

The invention provides a method for analyzing colistin sulfate components and related substances for injection, which adopts a high performance liquid chromatography, and is characterized in that the chromatographic conditions of the high performance liquid chromatography are as follows: a mobile phase A is a sodium sulfate solution-acetonitrile mixed solution, the mass percentage content of acetonitrile is 21.2-21.8%, the mobile phase B is a mobile phase C, the mobile phase C is a mobile phase D, and the mobile phase D is a mobile phase E; and the mobile phase B is acetonitrile. The method can be simultaneously applicable to detection of related substances and components of colistin sulfate raw material medicines, colistin sulfate freeze-dried preparations for injection and the like, and is good in stability.

The invention discloses a tunnel settlement control method for soft clay areas, belonging to the technical field of tunnel settlement treatment. The control method uses nano-silica sol and sodium chloride slurry for double-liquid electrochemical grouting. A metal grouting pipe is inserted into the clay layer to be reinforced at the tunnel grouting hole, which also serves as an electrode. A direct current is passed and slurry is injected. Under the action of the electric field, the charged nano-silica sol and pore water will move with the action of the electric field. The nano-silica sol moves with the water body or fills the pores with the action of the electric field and forms a solid gel, thereby realizing the reinforcement and settlement control of the soft clay layer, and avoiding secondary settlement caused by the dissipation of pore water pressure after construction through construction measures such as reversing the electric field.

The utility model discloses an intelligent goaf fire preventing and extinguishing system based on gravity layering, and relates to the technical field of goaf fire preventing and extinguishing. Comprising a control system, a monitoring system and a gas source supply system, the gas source supply system is located on the ground, the CO2 gas source supply system is connected with a first pipeline, the other end of the first pipeline is connected to the position, close to a bottom plate, of an underground working face roadway and connected with a CO2 conveying pipeline, and the N2 gas source supply system is connected with a second pipeline. The other end of the second pipeline is connected to the position, close to a top plate, of an underground working face roadway and connected with an N2 conveying pipeline, the monitoring system comprises a plurality of CO concentration detectors, the CO concentration detectors are arranged behind a coal face support, and the CO concentration changes are monitored in real time through the CO concentration detectors. According to the utility model, the technical problems of blind area coverage and insufficient inerting effect in the prior art are solved, and the safety and reliability of fire prevention and extinguishing in the underground goaf of the coal mine are improved.

The utility model relates to the technical field of metal injection molding, in particular to a parallel double-injection magnesium alloy semi-solid forming machine which comprises a fixing seat, a first sliding rail and sliding block assembly which is longitudinally arranged is installed on the fixing seat, and two injection molding mechanisms which are transversely arranged are installed on the first sliding rail and sliding block assembly. The front side and the rear side of the fixing base are each provided with at least two horizontal driving pieces, and driving rods of the horizontal driving pieces are fixedly connected with the face, facing the horizontal driving pieces, of the injection molding mechanism. The horizontal driving part can drive the injection molding mechanisms to longitudinally move along the fixed seat, correspondingly, the nozzles on the injection molding mechanisms can also move back and forth in the long holes, the horizontal positions of the two injection molding mechanisms can be independently adjusted, so that the positions of the two nozzles are adjusted to adapt to molds with different distances, and the production requirements are met.

The utility model discloses a filter cartridge dust remover pulse dust removal flow guide device based on venturi, relates to industrial flue gas treatment technical field, including the venturi flow guide cylinder of fixed in the filter cartridge top entrance end, the venturi flow guide cylinder includes the coaxial fixed upper section cylinder and contraction cylinder, and the bottom of upper section cylinder is connected with the top of contraction cylinder, and the bottom diameter of upper section cylinder, the top diameter of contraction cylinder all are same with the outer diameter of filter cartridge, the contraction angle of contraction cylinder is 23~25 DEG, and the bottom of contraction cylinder is fixed in filter cartridge top entrance end, and the bottom diameter of contraction cylinder is same with the inner diameter of filter cartridge, and the nozzle that is equipped with the direct top of venturi flow guide cylinder.

The utility model relates to continuous barrel plating production line technical field discloses automobile radiator fin continuous barrel plating production line, including the cylinder, the lid is rotationally connected with the inboard of cylinder upper end, and the both ends rotationally connected with fixed cylinder of cylinder, the one end fixed connection of fixed cylinder far from cylinder has the support, and the one end downside of fixed cylinder is provided with storage subassembly, and storage subassembly includes the storage box of fixed cylinder lower end setting, the one end fixed connection of storage box upside has the liquid inlet, and the first drainage of storage box lower end fixed connection has, and the middle end of storage box upside setting has the liquid injection subassembly, and the one end outside of cylinder is provided with the rotating subassembly, and the one end downside of fixed cylinder close to rotating subassembly is provided with the collection subassembly, and the upper end of collection subassembly is provided with the filter subassembly, can cooperate through storage subassembly and liquid injection subassembly etc., effectively maintain the rotating speed of cylinder, make its rotating speed maintain equilibrium, increase the injection amount of fresh electrolyte simultaneously, reduce the influence to fin coating, thereby effectively promote the uniformity of coating.