21results about How to "Will not corrode" patented technology

The utility model discloses a reaction furnace and a recovery system, and relates to the technical field of chemical equipment. The reaction furnace comprises a furnace body, a crucible and an isolation protection layer, the crucible and the isolation protection layer are both arranged in the furnace body, the isolation protection layer is arranged in the crucible, a reaction chamber is formed in the isolation protection layer, and the reaction chamber is used for containing reactants; the reaction furnace heats reactants in the reaction chamber through the crucible, and the isolation protection layer is used for separating the reactants in the reaction chamber from the crucible. The scheme at least can be used for improving the process quality of the reaction furnace.

The application discloses a method and device for eliminating white smoke in wet desulfurization flue gas, which mixes hot air with reheated flue gas to eliminate white smoke in the flue gas, collects various temperature and humidity data, and finally calculates the critical heating temperature T of the hot air required for eliminating white smoke in the flue gas HCT , and then adjusts the amount of heat medium of the air heater in real time until the temperature T of the hot air is equal to the critical heating temperature T ah of the hot air HCT , and then the flue gas is discharged. The application can heat the flue gas after wet desulfurization by the intermediate wall heating, mix the flue gas with hot air, determine the critical heating temperature of the hot air for eliminating white smoke in the flue gas in real time, adjust the amount of heat medium in real time to control the temperature of the hot air, automatically control the amount of heat medium for mixed heating and eliminating white smoke, and thus eliminate white smoke and avoid unnecessary energy consumption of the device caused by the lack of theoretical basis for adjusting the temperature of the discharged flue gas by the operator.

This invention discloses a method for preparing pentaerythritol oleate based on sodium bisulfite. The method involves the esterification reaction of pentaerythritol and oleic acid with sodium bisulfite as an auxiliary agent. Sodium bisulfite, as an auxiliary agent, possesses both catalytic and antioxidant functions, effectively improving the reaction rate and product yield while suppressing oxidation side reactions. This eliminates the need for additional antioxidants, improving product quality and reducing costs. The preparation method is simple, mild, and environmentally friendly, with readily available raw materials, low-cost auxiliary agents, and easy separation. After the reaction, the catalyst is removed by hot filtration, and unreacted oleic acid is removed by solvent extraction, effectively reducing the product's acid value. The extracted potassium oleate byproduct has a purity of 80%–90% and can be used as a flotation agent, release agent, or raw material for lubricant production, making it suitable for industrial applications. The resulting pentaerythritol oil is suitable for high-end lubricants, bio-based plasticizers, and environmentally friendly coatings.

The application discloses a shrinkage-compensating concrete containing acid-free weak base expandable graphite and a preparation method thereof. The concrete comprises cement 200-500 parts, mineral admixtures 50-200 parts, fine aggregate 600-800 parts, coarse aggregate 1000-1300 parts, water 120-200 parts, additive 5-15 parts and acid-free weak base low-temperature expandable graphite 15-75 parts. The expansion trigger temperature of the graphite is 90-100 DEG C, and the pH value is 6.0-8.0. The method comprises the following steps: firstly, uniformly mixing and stirring cement, mineral admixtures, fine aggregate, coarse aggregate and acid-free weak base low-temperature expandable graphite to obtain dry mixture B; secondly, mixing water and additive and adding the mixture into the dry mixture B to uniformly stir to obtain a concrete mixture; and thirdly, forming the concrete mixture, carrying out steam curing after final setting, naturally cooling to room temperature and obtaining the shrinkage-compensating concrete. Therefore, the concrete self-shrinkage can be precisely and efficiently compensated in the steam curing process of the concrete.

This invention provides a device for pulse welding of workpieces with solder. According to the order of the welding wire's movement and position, it comprises, in sequence, a welding wire spool and traction wheel at the top, a welding wire passage pipe in the middle, a welding wire conveying mechanism at the bottom, and a horizontally placed workpiece conveying platform at the bottom. A DC high-voltage power supply is connected between the workpiece conveying platform and the wire feed wheel. The workpiece conveying platform and the workpiece are in electrical contact, and the driven wheel and the welding wire are in electrical contact. When the welding wire is pulled downwards by the wire feed wheel and contacts the workpiece on the workpiece conveying platform, the high temperature generated by the discharge instantly melts a section of the welding wire, forming a weld point on the workpiece. The workpiece of this invention is virtually free from melting and oxidation corrosion; the device consumes little energy, and the welding wire melts to form a weld point extremely quickly.

The utility model discloses a kind of steam ironing device through air suction auxiliary ironing, belong to clothes ironing technology, steam leaks to motor, erodes motor when the air suction device of existing ironing device air suction, the air suction device of the utility model includes motor and wind wheel, wind wheel is located in airflow cavity, motor is located outside airflow cavity, airflow cavity is connected suction port and exhaust port, motor is driven wind wheel by magnetic force transmission, instead of wind wheel is installed to motor shaft and is driven wind wheel by motor shaft, motor shaft does not need to pass through the wall of airflow cavity, completely eliminates leakage position, steam cannot leak to motor, erodes motor when air suction device air suction, motor long service life.

The utility model relates to the field of traffic signal linkage lamp strips, and discloses an LED controller traffic signal linkage lamp strip convenient to install, which comprises a main body, two connecting wires are arranged on one side of the main body in a sliding manner, light-emitting modules are fixedly arranged on the other sides of the two connecting wires, and the main body comprises a placing box. U-shaped rods are clamped on two sides of the inner bottom surface of the placing box. The main structure of the main body is provided with the containing box, the lower end of the containing box can be connected with the U-shaped rod, the upper end of the U-shaped rod can be clamped into the containing box through the first fixing nut, and when the U-shaped rod is used, the main body can be installed on a lamp pole; due to the fact that the first fixing nut, arranged at the upper end of the U-shaped rod, in the containing box is also arranged in the containing box, the first fixing nut cannot make contact with rainwater after being used for a long time, the first fixing nut cannot be eroded by the rainwater, and the service life of the first fixing nut is longer.

The application relates to the technical field of organic synthesis, in particular to a preparation method of C9H 12 O. The method is to use phenol and isopropyl alcohol as reaction raw materials, then heat under a protective atmosphere, and make the mixed reaction liquid pass through the surface of a catalyst to complete the reaction and obtain C9H 12 O. In the process, when the catalyst is a phosphate catalyst, isopropyl phenol is mainly synthesized; when the catalyst is an Al-P-O catalyst, ortho-isopropyl phenol and para-isopropyl phenol are mainly synthesized. The reaction has low preparation cost, is not easy to produce harmful substances, is an environmentally-friendly reaction path, and realizes green environmental protection and low cost of C9H 12 O production.

A split-type heating plate and electric cooking device includes a panel, a heating element, an upper insulating mica sheet, a lower insulating mica sheet, and a cover. The upper insulating mica sheet, the heating element, and the lower insulating mica sheet are sequentially pressed and connected to the inner wall of the panel by the cover. The panel includes a body and a heating base. The heating base is located in the middle of the body, and an annular groove is provided on the outer side of the heating base. The outer ring of the heating base has protrusions that surround a recess. The heating element includes a heating core plate. The concave-convex design of the heating base can stably fix the electric cooking device, and the annular groove design can solve the problem of minor water leakage without corroding the interior of the heating plate, resulting in a long service life. Furthermore, the electric heating plate uses a heating core plate, which has a large heating area, low production cost, and high thermal efficiency.

The utility model belongs to the technical field of pipeline detection equipment, and particularly relates to a tap water pipeline crawling device. Comprising a pipeline crawling device and a pipeline camera shooting device, the pipeline crawling device comprises a motor bin body, and a driving motor is arranged in the motor bin body; a front end driven wheel assembly; a rear end driven wheel assembly; the toothed chain is connected to the front-end driven wheel assembly and the rear-end driven wheel assembly; the gear set support assembly is driven by the driving motor, and the gear set support assembly drives the toothed chain; the pipeline camera device is connected to the tail part of the pipeline crawling device and comprises a cabin body, a motor is arranged in the cabin body, and a groove is formed in the middle of the cabin body; the camera assembly is installed in a groove in the middle of the cabin body and used for observing the condition of the inner wall in the water pipe and observing the movement conditions and postures of other instruments; and the motor drives the camera assembly to do lifting and putting-down motion through the gear assembly.

The utility model relates to a spray header lifting device and semiconductor equipment, and the spray header lifting device comprises a first aluminum pipe which is provided with an axial through first gas channel; one end of the second aluminum pipe sleeves the first aluminum pipe, and the other end of the second aluminum pipe is connected with the spray header; the second aluminum pipe is provided with a second gas channel which is axially through and is communicated with the first gas channel; the first sealing piece is arranged between the outer wall of the first aluminum pipe and the inner wall of the second aluminum pipe, so that the first gas channel and the second gas channel form a sealed channel; the telescopic auxiliary device comprises a stainless steel corrugated pipe arranged on the first aluminum pipe in a sleeving mode. One end of the stainless steel corrugated pipe is in sealed connection with the first aluminum pipe, and the other end is in sealed connection with the second aluminum pipe so as to adapt to axial relative displacement of the first aluminum pipe and the second aluminum pipe. The semiconductor equipment comprises a semiconductor chamber, a spray header, a supply device and the spray header lifting device. According to the utility model, pipeline sliding and pipeline sealing can be realized.

The utility model belongs to the field of semiconductor manufacturing, and discloses an anti-deformation wafer cleaning flower basket, which comprises a front plate and a rear plate, the front plate and the rear plate are oppositely arranged front and back, a plurality of groups of support columns are arranged between the front plate and the rear plate, and the plurality of groups of support columns form a U-shaped structure. A continuous concave-convex positioning structure is arranged on the surface of the supporting column in the extending direction of the supporting column. The two ends of the supporting column are fixedly installed between the front plate and the rear plate respectively, an auxiliary hole is formed in the supporting column, the extending direction of the auxiliary hole is consistent with the extending direction of the supporting column, and a reinforcing column is installed in the auxiliary hole in a pressing mode and made of Hastelloy C276. According to the scheme, the reinforcing columns made of hastelloy are additionally arranged in the supporting columns, so that the bending strength of the supporting columns is improved, the shape stability can still be kept after long-term use, the problem of wafer damage or uneven cleaning caused by deformation is reduced, and the service life of the flower basket is prolonged.

This invention discloses a vibration-type respiratory sputum clearance device, relating to the field of medical device technology. It includes a vest body. Multiple independent liquid-coupled vibration units are arranged on the inner side of the vest, corresponding to the upper and lower lobes of both lungs and the projected lung region on the back. Each liquid-coupled vibration unit includes a sealed liquid-sealed bag, and a vibration unit is disposed on the outer side of each sealed liquid-sealed bag. The sealed liquid-sealed bag is integrally embedded and fixed in a flexible interlayer on the inner side of the vest. The interior of the sealed liquid-sealed bag is filled with a vibration-transmitting liquid. The vibration-transmitting liquid filled in the sealed liquid-sealed bag of this invention, relying on its incompressible and highly fluid physical properties, can efficiently transmit and convert the high-frequency micro-vibrations generated by the double-layer piezoelectric sheet, forming a dual mechanical action of shallow loosening and deep oscillation, perfectly adapting to the sputum clearance needs of the soft tissues of the chest and back and the deep airways of the thoracic cavity.

The utility model belongs to the technical field of atomization, and particularly discloses an atomizer and a condensation type gas water heater, the atomizer comprises a shell, a piezoelectric ceramic piece and a flexible sealing sleeve, the shell is provided with atomization holes, the piezoelectric ceramic piece is provided with an acid-resistant protection piece, and the piezoelectric ceramic piece can transmit high-frequency vibration to the protection piece; the flexible sealing sleeve is arranged in the shell, one end of an opening of the flexible sealing sleeve is connected to the periphery of the atomization hole in a sealed mode, the outer periphery of the protection piece and the inner side wall of the flexible sealing sleeve form sealing, one face of the protection piece faces the atomization hole, and the other face of the protection piece faces the piezoelectric ceramic piece. The condensation type gas water heater adopts the atomizer, so that the piezoelectric ceramic piece in the atomizer can be prevented from being corroded in acidic condensate water in the condensation type gas water heater, the atomization effect is guaranteed, and the phenomena that the atomization effect is reduced or atomization fails and the like due to damage of the piezoelectric ceramic piece are reduced as much as possible.

The invention discloses a method and system for predicting the service life of a steel structure anticorrosive coating based on data analysis, and relates to the technical field of data analysis processing, comprising the steps of performing position analysis processing on geographic information of a position where a steel structure is located, and determining a layering standard of the steel structure. According to the method, the steel structure installed in seawater is layered according to the geographic information of the position of the steel structure, then the thicknesses of the steel structure anticorrosive coatings with different depths are calculated, the corrosion speeds of the steel structure anticorrosive coatings with different depths are determined, and finally the corrosion speed of the steel structure anticorrosive coatings with different depths is calculated. The real-time thickness of the steel structure anti-corrosion coating is calculated according to the corrosion speed of the steel structure anti-corrosion coating, the remaining service life of the steel structures with different depths is obtained, the remaining service life of the steel structures can be recorded in real time, when the remaining service life of the steel structures is too short, the steel structures can be thickened in time, and the service life of the steel structures is prolonged. And seawater is prevented from corroding the steel structure, the service life of the steel structure is prolonged, and meanwhile, the risk of collapse of a steel structure supporting object is reduced.

An adjusting groove which is concave forwards is formed in the middle of the rear surface of a main body plate, the left side face and the right side face of the adjusting groove are symmetrical arc-shaped side faces, and two symmetrical rope inlet channels which are communicated with an upper mounting groove are upwards formed in the adjusting groove. The adjusting groove is downwards provided with two symmetrical rope outlet channels communicated with the lower mounting groove, the adjusting groove is provided with two resistance friction plates capable of moving left and right, arc-shaped adjusting channels are formed between the two resistance friction plates and the left side face and the right side face of the adjusting groove respectively, and a back plate is fixed to the rear surface of the body plate. According to the utility model, two steel wire ropes are adopted, so that the strength is higher and the safety is better; all the components are made of 304 stainless steel materials, so that corrosion, rusting, aging and blocking are avoided, the service life is long, the reliability is good, and the safety is high; the descending and stopping can be controlled, the descending speed can be adjusted, self-locking speed reduction can be achieved when the descending speed is too high, and safety and reliability are good.

The utility model discloses an oil-gas-electricity isolated electronic atomization device which comprises a main body, an oil storage cavity, a power supply cavity, an air inlet channel and a smoke exhaust channel which are arranged in the main body in the longitudinal direction and isolated from one another, and an atomization cavity which is arranged in the transverse direction and located below the cavity bottom wall of the oil storage cavity. The lower end of the air inlet channel and the lower end of the smoke exhaust channel are communicated with the two ends of the atomization cavity respectively, the upper end of the air inlet channel and the upper end of the smoke exhaust channel are communicated with the outside, the cavity bottom wall of the oil storage cavity is provided with an oil guiding channel used for guiding tobacco tar in the oil storage cavity into the atomization cavity, and an atomization core used for atomizing the tobacco tar is arranged in the atomization cavity. And a power supply assembly for supplying power to the atomizing core is arranged in the power supply cavity. After the technical scheme is adopted, the electronic atomization device is used for solving the problems that according to an existing electronic atomization device, smoke is liquefied into condensate in the smoke exhaust channel to flow back into the power supply cavity to cause short circuit of the power supply assembly, liquid leakage is caused by the fact that the condensate flows out of the air inlet channel, and the taste of tobacco tar is changed due to the fact that the atomization core is corroded by the tobacco tar in the tar storage cavity.

This utility model discloses a connection structure for a refrigerated truck compartment and the refrigerated truck compartment itself. The connection structure includes wall panels, corner posts, and connecting rivets. The wall panels include an outer wall panel, an inner wall panel, and an insulation layer. A connector fixed to the outer wall panel is provided on the inner side of the outer wall panel. The connector includes a first connecting plate, which forms a groove with an opening facing the corner post between itself and the outer wall panel. A second connecting plate and a third connecting plate located inside the second connecting plate are provided on the side of the corner post facing the wall panel. The second connecting plate is located inside or outside the outer wall panel, and the third connecting plate overlaps with the first connecting plate. The connecting rivets pass through the first and third connecting plates to fix them, and the outer end of the connecting rivets is received in the groove. This utility model ensures that the connecting rivets do not penetrate to the outer side of the wall panels and corner posts, preventing leakage of foam material during secondary foaming, and the connecting rivets are not exposed on the outer surface of the refrigerated truck compartment.

The utility model provides an automatic lifting canopy observation stand column, and the top of the stand column is provided with an installation platform which is used for the installation of a monitoring element. The top plate is supported above the mounting platform through supporting columns, a rainproof cover corresponding to the detection element is arranged on the lower surface of the top plate, the rainproof cover is a flexible sleeve, and a driving mechanism corresponding to the rainproof cover is arranged in the middle of the top plate so as to drive the rainproof cover to cover the mounting platform downwards or be accommodated on the lower surface of the top plate upwards; the upper cover is correspondingly assembled above the top plate, and the lower edge of the upper cover extends downwards to the position below the top plate so as to shield the stored rainproof cover. The retractable rain cover is arranged, and the monitoring element at the top of the construction site monitoring column is prevented from being eroded by rainwater through the cover buckle during rainfall, so that the service life of the monitoring element is ensured, and the maintenance frequency is reduced.