25results about How to "Avoid liquidity" patented technology

The application relates to a connecting structure of a heat-insulated oil pipe and belongs to the technical field of heat-insulated oil pipes, which comprises an oil pipe, the oil pipe comprises an outer pipe and an inner pipe, the inner pipe is located in the inner part of the outer pipe, a heat-insulated cavity is formed between the outer pipe and the inner pipe, aerogel is filled in the heat-insulated cavity, the end parts of two sections of the inner pipe are fixedly connected through a threaded connection assembly, the end parts of two sections of the outer pipe are provided with heat-insulated connecting sleeve pipes, and the two ends of the heat-insulated connecting sleeve pipes are fixedly provided with plug-in rings. The heat-insulated ring on the plug-in ring of the end part of the heat-insulated connecting sleeve pipe is tightly abutted against the end part of the outer pipe, heat transfer of the connecting gap of the outer pipe can be blocked, the flowability of hot oil in the inner pipe is prevented from being deteriorated, the gap at the connecting position of the two sections of the double-layer heat-insulated oil pipe can be sealed and filled, heat loss from the gap at the connecting position of the two sections of the double-layer heat-insulated oil pipe is prevented, the heat-insulating effect of the connected heat-insulated oil pipe is ensured, and the flowability of oil is prevented from being affected.

The application discloses a kind of marine carbon fiber warp knits and its preparation method application, carbon fiber reinforced resin composite material, belong to carbon fiber composite material technical field, solve the problem of existing technology in the forming of ship large curved surface workpiece Fabric is easy to shrink, resin infiltration efficiency is low.The marine carbon fiber warp knits includes at least two carbon fiber yarn sheets, the carbon fiber yarn sheet is formed by carbon fiber yarn spread yarn flat cross section;At least two carbon fiber yarn sheets are stacked along the thickness direction, and the lay angle of adjacent carbon fiber yarn sheet constitutes asymmetric lay structure;The carbon fiber yarn sheet is stitched by warp knitting thread, and the stitching density of the warp knitting thread is 8-14 roots / inch.The marine carbon fiber warp knits can realize width variation <5mm, resin rapid and uniform infiltration, improve the forming quality and efficiency of ship large curved surface workpiece.

This utility model discloses a waterproof and dustproof high-pressure safety valve for gas, including a housing, a guide seat, a valve, a filter assembly, and a valve seat. The housing has an inlet at its lower end and an outlet along its circumference. This structure adopts a bottom-in, side-out approach, with multiple outlets to improve exhaust efficiency. The guide seat and valve are located inside the housing, with the guide seat slidably connected to the inner wall of the housing. The valve seat is located at the lower end of the housing, with the upper end of the valve corresponding to the lower end of the guide seat. The valve and valve seat slide in contact, and the lower end of the valve corresponds to the flow channel of the valve seat. An exhaust chamber is located inside the housing, connected to the outlet along the circumference of the housing. An elastic sealing ring is provided on the inner wall of the exhaust chamber. Through optimized structural design and sealing performance, this valve solves the problems of leakage and jamming that may occur with traditional safety valves in special environments, improving safety and service life, and providing a guarantee for the long-term stable operation of industrial equipment.

This invention discloses a precision-controlled, leak-proof spiral extrusion adhesive supply device, relating to the field of adhesive bonding and processing technology. It includes an extruder body, a material control actuator, an anti-overflow and leak-proof sealing mechanism, an adaptive cleaning and mixing component, and a spiral extrusion conveying mechanism. The extruder body has an extrusion terminal box at the front end, housing the anti-overflow and leak-proof sealing mechanism, and a power drive box at the rear end. A PLC main control panel is located at the front end, housing the spiral extrusion conveying mechanism. A premixing and mixing treatment box is located at the top, equipped with a feed guide groove and a toothed disc protective box. An adaptive cleaning and mixing component is built-in, achieving mixing and cleaning of the bin walls through meshing transmission. The material control actuator connects the premixing box and the extruder, and includes a transition box, a material control and resistance adjustment plate, etc., to adjust the feed rate and homogenize the adhesive. The spiral extrusion conveying mechanism includes a conveying cylinder with a tapered front end, working in conjunction with a conveying auger and featuring flow monitoring. The anti-overflow and leak-proof sealing mechanism uses a transmission-controlled arc-shaped baffle for sealing, adaptable to different adhesives.

This invention relates to a high-temperature resistant, room-temperature curing anti-corrosion coating and its preparation method. The high-temperature resistant, room-temperature curing anti-corrosion coating includes component A and component B. Component A includes epoxy resin, small molecule hydroxyl compounds, additives, and inorganic fillers. Component B includes a curing agent. The epoxy resin includes phenolic epoxy resin, which includes various phenolic epoxy resins with different viscosity gradients. The coating of this invention, by using phenolic epoxy resins with different viscosity gradients, can improve the adhesion between the coating and oil pipeline materials, and also improves the resistance to different temperatures and humidity levels. It has strong adhesion to oil pipelines, is easy to apply, and possesses a variety of excellent properties such as high solids content, impermeability, corrosion resistance, high temperature resistance, and thermal stress resistance. It can be applied in harsh environments such as alternating high and low temperatures, alternating dry and wet conditions, alternating strong acids and alkalis, and high abrasion, and is suitable for long-term corrosion protection of oil pipelines.

The utility model relates to the technical field of necked water bags of smelting furnaces, and aims to solve the problems that the existing necked water bag of the smelting furnace is directly attached to the inner wall of the smelting furnace, the flowing path, speed and the like of molten glass can be changed by a crack and an attached included angle, and the homogenization and clarification processes of the molten glass are further influenced. The utility model provides a smelting furnace neck water bag which comprises a body, a connecting arm, a buffer plate and a sealing assembly. The partition plate is attached to the side wall of the body. The sealing assembly is arranged on the buffer plate in a covering manner; one end of the sealing assembly is connected with the connecting arm; the other end of the sealing assembly is connected with the body; according to the utility model, the body can be protected through the buffer plate, abrasion during installation is reduced, and molten glass can be prevented from flowing into a crack between the body and the inner wall of the furnace body through the sealing assembly, so that the flowing path and speed of the molten glass are avoided, and the homogenization and clarification effects of the molten glass are improved.

This utility model discloses a material filtering device for an injection molding machine, including a filter cylinder. The filter cylinder has multiple inclined filter screens arranged from top to bottom inside. The filter cylinder has a standard material outlet that connects to the bottom of the lowest filter screen, and the standard material outlet is connected to a vertically downward feeding pipe. The bottom of the filter cylinder has a suction pipe, and the top of the filter cylinder has a strip-shaped feed inlet. Ionizing air bars are installed on both sides of the feed inlet in the upper part of the inner cavity of the filter cylinder. The suction pipe is connected to an external negative pressure fan. This utility model uses ionizing air bars to generate ions to eliminate static electricity in the plastic particles, thus preventing fine particles and dust from adhering to the plastic particles and mixing into the injection molding machine. The negative pressure adsorption also removes dust and debris generated during the collision of the plastic shell, preventing fine particles from causing uneven melt flow or surface pitting.

The invention relates to the technical field of air treatment, and discloses air treatment equipment which comprises a shell provided with a second air outlet; the second swing blade assembly is arranged at the second air outlet and comprises a second synchronous plate and a plurality of second swing blades; the two ends of each second swing blade are arranged in a pivoted mode, each second swing blade is provided with a second synchronous shaft, and all the second synchronous shafts are connected to a second synchronous plate. The linkage assembly comprises a key part and a pushing part; the key part can be pressed and rebounded, and is connected to the second synchronous plate through the pushing part; when the key part is pressed or rebounded, the second synchronous plate is driven to move through the pushing part, and then all the second swing blades are driven to rotate synchronously through the second synchronous plate, so that the second air outlet is shielded or avoided.

The utility model discloses a kind of heat exchangers of cyclone support structure, it is related to heat exchanger equipment technical field, including shell, vertical setting;Pipe plate, set in the both ends of shell, the shell one end between two pipe plates is equipped with cold fluid medium import, and the other end is equipped with cold fluid medium export;Multiple heat exchange tubes, its both ends are fixed between pipe plate and are penetrated;Upper head, lower head, respectively sealed connection in the both sides opening of shell, the both ends of each heat exchange tube are all corresponding to connect upper head and lower head, and upper head is equipped with hot fluid medium import, and lower head is equipped with hot fluid medium export;Multiple cyclone components, along axial interval setting between two pipe plates, each heat exchange tube is all through cyclone component, and structure unit that can produce fluid cyclone effect is equipped in cyclone component;Support, set in the peripheral surface of shell.The above-mentioned heat exchanger of cyclone support structure, structure simple, manufacturing cost low, technical effect of high heat exchange efficiency are realized.

The utility model discloses a kind of mixing device for concrete retarder production, it is related to concrete processing equipment technical field.The utility model includes mixing tank, rotating rod is movably connected in the mixing tank interior, conveying pipe is installed in the rotating rod interior, and mixing blade is installed on the conveying pipe surface;Temperature control assembly is arranged on the one side of the mixing tank, and the temperature control assembly includes temperature sensor installed in the mixing tank interior.The utility model is rotated by rotating rod and drives mixing blade, realizes the efficient stirring mixing of material, conveying pipe bending design, prolongs cooling water circulation path, enhances heat exchange capacity, can effectively reduce material temperature, avoid the viscosity change and flowability reduction problem caused by high temperature, simultaneously, gear pump system that first gear and second gear constitute, directional circulation of cooling water is realized by water delivery shell, ensure that material is continuously cooled during stirring process, to improve the uniformity and efficiency of mixing, guarantee product quality stability.

This invention discloses a hydrotreating catalyst, its preparation method, and its application. The method includes: supersaturating an alumina-based support with an impregnation solution containing dopamine, a protective agent, and a hydrotreating active metal; adjusting the pH of the system to allow dopamine to self-polymerize on the pore surface of the alumina-based support; and then washing and heat-treating to obtain the hydrotreating catalyst. The hydrotreating catalyst prepared by this method exhibits significantly improved desulfurization and denitrification activity, as well as improved stability.

The utility model relates to the technical field of accessory feeding devices, and discloses an accessory processing feeding device which comprises a fixing frame, a motor is fixedly connected to the side wall of the fixing frame, an output shaft is fixedly connected to the output end of the motor, a plurality of material tables are fixedly connected to the upper surface of the fixing frame, a feeding assembly is arranged at one end of the output shaft, and a feeding assembly is arranged at the other end of the output shaft. The feeding assembly comprises a rotating wheel, the side wall of the rotating wheel is fixedly connected to one end of the output shaft, an inner groove is formed in the rotating wheel, a sliding table is fixedly connected to the upper surface of the fixing frame, a plurality of sliding rods are slidably connected to the interior of the sliding table, and a push plate is fixedly connected to one end of each sliding rod. The other end of each sliding rod is fixedly connected with a sliding shaft. According to the metal part feeding device, the sliding rods repeatedly and alternately slide in the sliding table, so that the push plate alternately feeds metal parts on the surface of the push plate in order, blockage and disordered flowing of the materials are avoided, and continuity of the machining process is ensured.

The utility model relates to the technical field of injection molding, and discloses an injection mold structure for umbrella-rib-shaped products made of PP (polypropylene) materials, which comprises a lower mold and an upper mold arranged on the right side of the lower mold. According to the injection mold structure for the umbrella-rib-shaped product made of the PP material, a segmented injection technology is adopted, two groups of hot runners are arranged in each group of independent cavities, the injection process is divided into a plurality of stages, the injection speed and pressure are adjusted according to filling requirements of different areas, uniform flowing of the PP material in a complex umbrella rib structure can be ensured, and the production efficiency is improved. A plurality of small runners are arranged in the mold, and particularly the tiny runner design is adopted at the detail part of the umbrella rib, so that the PP material can uniformly flow in a complex cavity, and the phenomenon of unsmooth flow or incomplete injection molding is avoided; the problems that a traditional mold is poor in fluidity, incomplete in filling, long in forming period and prone to buckling deformation in the injection molding process are solved.

This invention discloses an injection molding die for PVC pipe fittings, belonging to the field of injection molding technology. It includes: a fixed mold base with a first water-cooling plate fixed to one end face; a sliding mold base, parallel to one side of the fixed mold base; a fixed template, installed on the end face of the first water-cooling plate near the sliding mold base; a movable template, fixed to the side of the sliding mold base near the fixed template; two mold cavities, symmetrically arranged in the fixed template; and two core guide units, each installed in one of the mold cavities on the fixed template. In this invention, the fixed template and the movable template can fit tightly together to form two injection molding cavities for the PVC pipe fittings. The core shaft in the main shaft core device can be eccentrically or coaxially distributed with the mold cavity as the shaft rotates, which facilitates rapid filling of the mold with PVC material, shortens the injection cycle, prevents material shortages or incomplete filling due to flow obstruction, and improves product quality.

This utility model relates to the field of waste heat recovery technology for air compressors, and discloses a waste heat recovery system for air compressors. The heat exchange medium inlet of the heat exchange tube bundle on the waste heat recovery heat exchanger is connected to the exhaust port of the air compressor body. The heat exchange tube bundle is spiral-shaped and has a horizontal U-shaped structure. The inlet and outlet of the heat medium on the waste heat recovery heat exchanger are connected to the outlet of the circulating water pump and the inlet of the heat storage tank, respectively. The waste heat recovery heat exchanger is divided into upper and lower layers by a partition component. Each of the upper and lower heat exchange chambers is equipped with baffles that match the spiral direction of the heat exchange tube bundle. The heat exchange tube bundle increases the contact area and contact time between the heat medium and the heat exchange medium, while the baffles guide the flow of the heat medium and increase the heat exchange contact time within the waste heat recovery heat exchanger. Through the orderly flow channel, baffles, and spiral tube bundle design, heat exchange efficiency is improved and the medium contact time is extended, achieving energy saving, consumption reduction, and space saving.

The application provides a new sand pneumatic conveying and adding device of a green sand mixing mill, relates to the technical field of green sand treatment equipment, and comprises a conveying pipeline, the other end of the conveying pipeline is provided with a material guide pipe, a positioning cover is arranged on the material guide pipe, a driving cylinder is arranged on the top of the positioning cover, a traction plate one is arranged on the output end of the bottom of the driving cylinder, a sealing plate one is arranged on the bottom of the traction plate one, a vertical rod is arranged on the bottom of the sealing plate one, a flow guide cone block is arranged on the side of the vertical rod, and a sealing plate two is arranged on the bottom of the vertical rod. The flow guide cone block guides airflow dispersion and wall adhesion, forms a pressurized airflow to clean the inner wall of the material guide pipe, reduces the adhesion of new sand on the inner wall of the pipeline, reduces the maintenance frequency and cost of the equipment, improves the production efficiency, and solves the problem that new sand continuously contacts and rubs the inner wall of the pipeline, pneumatic separation, humidity and other factors cause part of the new sand to adhere to the inner wall of the pipeline.

The invention discloses a motor stator structure, a power module and a robot. The motor comprises an outer surrounding piece, a stator core accommodated in the outer surrounding piece and a plurality of winding units, the outer surrounding piece comprises a first axial wall and a second axial wall, the first axial wall, the second axial wall, a third wall and a fourth wall form the outer surrounding piece in a surrounding mode, a gap is formed between at least two adjacent winding units, and the first axial wall, the second axial wall, the third wall and the fourth wall are arranged in the gap. The gap and the first axial wall and the second axial wall of the outer surrounding piece form an axial channel, a gap is formed between the first bent end, close to the third wall, of the winding unit and the third wall, and the gap and the first axial wall and the second axial wall of the outer surrounding piece form a first circumferential channel. A gap is formed between the second bent ends, close to the fourth wall, of the winding units and the fourth wall, the gap and the first axial wall and the second axial wall of the outer surrounding piece form a second circumferential channel, and the axial channel, the first circumferential channel and the second circumferential channel form a cooling liquid flow channel.

The utility model belongs to the technical field of gas-liquid separation, and discloses a low-temperature gas-liquid separator which comprises a separator body, a gas-liquid separation assembly is installed on the surface of the separator body and comprises an inlet pipe, a gas inlet formed in the separator body is communicated with the inlet pipe, and a gas outlet is formed in the separator body. A flow gathering plate is installed at an air inlet formed in the separator body, a demister net is installed at the top end in the separator body, a supporting plate is arranged on the lower surface of the demister net, a separating plate is installed on one side of the supporting plate, and a liquid discharging plate is installed at the bottom end in the separator body. The low-temperature gas-liquid separator has the advantages that the manufacturing cost of the low-temperature gas-liquid separator can be reduced, the internal structure can be simplified, and the situation that the internal structure of the low-temperature gas-liquid separator is complex, and the requirements for economical efficiency, high efficiency and reliability of equipment in the industry are difficult to meet is avoided.

The utility model provides a coal tar hydrogenation liquid sulfur injection device, which belongs to the technical field of liquid supply, and comprises an output pipe connected with a storage tank, the end part of the output pipe is connected with a plurality of water supply units, each water supply unit is connected with a feed pipe of a stirring barrel, and the stirring barrel is used for mixing liquid sulfur and coal tar; the water supply unit comprises a water supply pipe connected with the output pipe, the end of the water supply pipe is connected with the water inlet pipe, and the water supply pipe is sequentially provided with a switch valve used for water flow on-off, a pressure stabilizing valve used for stabilizing water pressure, a pressure regulating valve used for regulating pipeline water flow and a pressure gauge used for detecting the water pressure. According to the liquid sulfur injection device, water is stably and continuously supplied to the mixing drum through the water supply units, and the other water supply unit can be used for working when one water supply unit cannot work normally, so that the liquid sulfur injection work can be normally operated.

This invention discloses a thermometer fixture suitable for transient processes in cryogenic systems, comprising a front guide tube, a rear guide tube, and a temperature measuring block with a temperature sensor mounting interface. The first end of the front guide tube and the first end of the rear guide tube are respectively connected to process piping, and the second ends of the front guide tube and the rear guide tube are respectively connected to the temperature measuring block. A heat exchange channel is formed inside the temperature measuring block, which communicates with the internal channels of the front and rear guide tubes to form a through-flow fluid channel. The fluid being measured can flow through the heat exchange channel and exchange heat with the temperature measuring block. This invention employs a through-flow structural design, combined with a temperature measuring block made of high thermal conductivity material and an optimized flow channel structure, significantly reducing the thermal inertia and thermal resistance of the temperature measuring system and improving the transient thermal response speed. It is particularly suitable for temperature measurement in cryogenic transient conditions such as superconducting cryogenic systems and modular hydrogen liquefaction equipment in the 20–30 K temperature range.

This invention discloses a feeding device and method for metal powder rolling, relating to the field of metal powder rolling equipment. The device includes a feeding hopper with a discharge port at its bottom. Movable side plates of the feeding hopper are slidably connected to a front and rear end plate. A gap adjustment mechanism is installed on the feeding hopper to adjust the position of the movable side plates and change the size of the discharge port. Two sets of stirring shafts are installed inside the feeding hopper, with follower wheels connected to the ends of the stirring shafts for frictional contact with the rolling mill rolls. An adjustable partition mechanism is also installed inside the feeding hopper between the two sets of stirring shafts. Based on this device, the method uses the gap adjustment mechanism in conjunction with a replaceable nozzle insert to synchronously adjust the discharge port size with the roll gap. The angle of the partition is adjusted by the swing adjustment mechanism to control the composite layer thickness ratio, and the rollers drive the follower wheels to rotate the stirring shafts. This invention can improve feeding uniformity, adapt to different roll gap specifications, and achieve precise layer control of composite materials.

The utility model relates to the technical field of drying equipment, in particular to a filtering, washing and drying machine convenient to discharge, which comprises a pressure vessel tank body, a conical movable extrusion cylinder and a stirring and washing assembly, a discharge pipe is fixedly connected to the side end part of the pressure vessel tank body, and the stirring and washing assembly is arranged in the pressure vessel tank body. A feeding pipe and a vacuum connecting pipe are arranged at the upper end part of the pressure vessel tank body, a heating inlet, a heating outlet and a filtering liquid outlet are formed in the outer part of the pressure vessel tank body, a side part supporting plate is fixedly connected to the side end part of the pressure vessel tank body, an air compressor pump is mounted at the upper end part of the side part supporting plate, and an air inlet is formed in the upper end part of the air compressor pump. And the outer part of the discharge pipe is slidably connected with a conical movable extrusion cylinder. Through the electric telescopic rod, the conical movable extrusion cylinder, the air guide cavity block and the air compressor pump, when the interior of the pipe opening of the discharging pipe is blocked, the back flushing air nozzle points to the interior of the pipe opening of the discharging pipe for back flushing, and high-pressure air is used for dispersing clogging.

This invention discloses a phosphorus-containing multi-arm hyperbranched resin, its preparation, and its application as an intrinsically flame-retardant multifunctional adhesive. The phosphorus-containing multi-arm hyperbranched resin is prepared by a method comprising the following steps: Step 1, using an α-diimide palladium catalyst to catalyze the polymerization of ethylene and 2-(2-bromoisobutyryloxy)ethyl acrylate to obtain a bromo-based multi-arm hyperbranched resin; Step 2, polymerizing the bromo-based multi-arm hyperbranched resin with glycidyl methacrylate to obtain an epoxy-based multi-arm hyperbranched resin; Step 3, subjecting the epoxy-based multi-arm hyperbranched resin to a ring-opening reaction with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to obtain a phosphorus-containing multi-arm hyperbranched resin. This invention provides the application of this phosphorus-containing multi-arm hyperbranched resin as an intrinsically flame-retardant multifunctional adhesive, possessing both excellent bonding and flame-retardant properties, and offering advantages such as low cost, controllable performance, simple process, and suitability for large-scale production and application.

The utility model discloses a flame-retardant plastic filter system shell with a diversion trench, which comprises a flame-retardant shell, a threaded groove is arranged in the flame-retardant shell, sealing covers are arranged at two ends of the flame-retardant shell, connecting pipes are fixedly connected to the outer sides of the two sealing covers, the two connecting pipes are respectively communicated with the interiors of the two sealing covers, and the diversion trench is arranged in the threaded groove. A clamping assembly is arranged on the outer side of the flame-retardant shell. According to the flame-retardant plastic filtering system shell, the two sealing covers are fixed on the two sides of the flame-retardant shell through the arranged clamping assemblies, so that the convenience of disassembly, assembly and maintenance of the flame-retardant plastic filtering system shell is improved, and liquid is guided through the threaded groove formed in the flame-retardant shell; the liquid is further conveyed and guided through the flow guide plate on the rotating shaft, so that the phenomenon of uneven flowing or vortex of the liquid in the flame-retardant shell is avoided, the use effect of the shell of the filtering system is further ensured, and the overall filtering efficiency of the filtering system is improved.

The application discloses a kind of hydroprocessing catalyst and its preparation method and application.The method comprises the following steps: the alumina-based carrier is oversaturated and impregnated in the impregnation solution containing dopamine, protective agent and hydrogenation active metal, the pH value of system is adjusted, so that dopamine is self-polymerized on the pore channel surface of alumina-based carrier, then washed, dried, pre-carbon deposition, calcination, to obtain a hydroprocessing catalyst.The hydrogenation catalyst prepared by the method of the application is obviously improved in desulfurization and denitrification activity and stability.