50results about How to "Replace completely" patented technology

The invention discloses a soybean salt tolerance and saline-alkaline tolerance screening device and an identification method. The soybean salt tolerance and saline-alkaline tolerance screening device comprises a working frame and a solution stirring bucket; the working frame comprises an upper layer and a lower layer; the upper layer of the working frame is provided with a pass box and the lower layer is provided with a water supply tower which is used for supplying water or salt solution for the pass box; the solution stirring bucket and the water supply tower are connected through a water pipe; the water supply tower and the pass box are connected through a water pipe; a fixing net is fixedly arranged inside the pass box; a breeding pipe is arranged inside grids; the lateral wall surface and the bottom surface of the breeding pipe are provided with permeable holes; the solution permeates the breeding pipe through the permeable holes; water (or the salt solution) is automatically replaced through an electromagnet valve which is controlled by a timer. The soybean salt tolerance and saline-alkaline tolerance identification method established by utilizing the device is stable, scientific and simple and beneficial to large-scale identification and large-scale screening can be performed inside space with limited greenhouse, the degree of automation is high, the environmental influences are small, the repeatability is strong, and the screening result is reliable.

The present invention discloses an evacuation method and its equipment for evacuating sandwich between external barrel and internal barrel of multi-layer heat-insulating container. Said evacuation equipment includes first gas-conveying device, it has a gas outlet; first gas heater, its inlet is communicated with gas outlet of first gas-conveying device, its outlet is communicated with gas inlet of said internal barrel; evacuation machine unit, it is communicated with said sandwich; second gas-conveying device, it has a gas outlet; and second gas heater, its inlet is communicated with gas outlet of said second gas-conveying device, and its outlet is communicated with said sandwich.

The invention relates to a bearing seat with an oil return groove. The bearing seat comprises a seat cover, a seat bottom, an axle hole, a bearing guard, an oil filling hole, an oil drainage hole, a maze groove and a joint screw hole and is characterized in that: the oil return groove is formed on the bottom side of the maze groove at the seat bottom and communicated with an oil cavity; and the oil drainage hole is formed under the center of the oil cavity at the bottom of the seat bottom. Return oil can enter the oil cavity conveniently in time and oil is replaced cleanly and completely; and the temperature statuses of a bearing and lubricating oil can be grasped in time.

The invention provides a shield structure cutter head mud cake cutting device and cutting method, and relates to the field of shield structure mud cake cutting. The shield structure cutter head mud cake cutting device comprises a high pressure jet device. The high pressure jet device comprises an auto-rotating type sprayer and a barrel body which are installed on a cutter head. The auto-rotating type sprayer is connected with the front end of the barrel body through a main shaft assembly. The main shaft assembly comprises a main shaft. A water channel I is arranged on the side wall of the barrel body. A water channel II is arranged on the front end of the barrel body. The front end of the main shaft is of a hollow structure provided with a water channel III. The water channel I, the water channel II and the water channel III communicate with one another sequentially. A water inlet of the auto-rotating type sprayer communicates with the water channel III. The auto-rotating type sprayer on the device provides rotating power by utilizing reactive force when water flow rushes out, a mud cake is cleaned by 360 degrees with no dead corner through two high pressure column sprayers arranged on the sprayer, cleaned muck falls into an excavation bin and is discharged with a mud pipeline, and practicability is good.

PROBLEM TO BE SOLVED: To provide a method for packing powder which is in a dry state and made to have a surface shape formed by making the thickness of the central part of the powder thicker and the thickness of the peripheral part of the powder thinner in a sagger in a compacted state.SOLUTION: A prescribed amount of the dry powder is supplied into the sagger 1. While a first pressing plate 16 is brought down to a prescribed position to a powder surface, vibration is applied to the sagger 1, and the powder surface is formed in a shape in which the middle is hollowed according to the lower surface shape of the first pressing plate. Next, the formed powder surface is pressed down further by a second pressing plate 17 to compact the powder. In this way, the productivity of a burning process and the quality of baking can be improved.

The invention discloses a silane sampling system adopting gas chromatography and a method thereof. The system comprises a sample introduction system, a high-purity helium scavenging line, a quick sample replacement pipeline, a venturi tube vacuum generation device and an alkali absorption cell, wherein the sample introduction system comprises a plurality of sample introduction pipelines, the high-purity helium scavenging line comprises a helium scavenging valve, a second filter, a pressure regulating valve, a second pressure gauge, a gas chromatography needle valve and a six-way proportional valve, which are connected in sequence, the quick sample replacement pipeline comprises an air release needle valve and a float flowmeter, and the venturi tube vacuum generation device comprises a nitrogen valve, a first pressure gauge, a first vacuumizing valve, a second vacuumizing valve and a venturi tube. The silane sampling system disclosed by the invention can be used for quickly scavenging and completely replacing the whole sample introduction system to avoid interference of residues in dead corners on analysis when switching samples on various detection points for analysis; and the system and the method disclosed by the invention are short in analysis period, safe, simple and convenient to operate and capable of meeting high frequency analysis requirements of industrial production.

The invention provides a novel pollution-free water tank which comprises a water tank body, a water delivery pipeline, a water distributing main pipe, a water outlet chamber water inlet pipeline, a reverse flushing pipeline, a drain pipeline and a water outlet pipeline, wherein the water tank is divided by a partition plate into a left chamber and a right chamber, namely a water delivery chamber and a water outlet chamber, the water outlet chamber water inlet pipe is connected with the water distributing main pipe, the water outlet of the water outlet chamber water inlet pipe is communicated with the water outlet chamber, the water outlet chamber water inlet pipeline is provided with a control valve, the reverse flushing pipeline comprises a controlling valve, a water supply pump set and aconnecting pipeline, the connecting pipeline is connected with the water distributing main pipe and provided with the controlling valve, the water supply pump set is connected with the connecting pipeline and used for supplying water to the water distributing main pipe, the drain pipeline is arranged on a bottom plate of the water tank, located below the water outlet chamber and used for drainingthe water outlet chamber, the drain pipeline comprises a drain pipe and a drain control valve, the water outlet pipeline comprises a water outlet pipe and a water outlet valve, the water outlet pipeis communicated with the water outlet chamber, and the water outlet valve is arranged on the water outlet pipe.

The invention discloses a light heat-insulation noise-reduction SiO2 aerogel material and a preparation method thereof, and belongs to the technical field of high-performance porous materials. The preparation method comprises the following steps: carrying out an acid-base two-step method and standing replacement on a trifunctional silicon source and a cationic surfactant in a water solvent to obtain an aerogel material; wherein the molecule of the trifunctional silicon source comprises a non-polar group which does not participate in hydrolytic condensation and three alkoxy groups which participate in the hydrolytic condensation. In the preparation method designed by the invention, water is used as a solvent, a surfactant is added to reduce the surface tension of the solvent, and an ordered assembly is formed in an aqueous solution to provide a micro-reaction container for a hydrophobic trifunctional silicon source; therefore, the prepared SiO2 aerogel material has the advantages of low density, low heat conductivity coefficient, high transparency and the like.

The invention discloses a vacuuming method and a device thereof, which are used for vacuuming the interlayer between the outer cylinder and the inner cylinder of a multilayer heat-insulating container. Wherein the vacuum pumping device comprises: a first gas conveying device, which has a gas outlet; a first gas heater, whose inlet is connected with the gas outlet of the first gas conveying device, and whose outlet is connected with the air inlet of the inner cylinder pass; vacuum unit, which communicates with the interlayer; the second gas delivery device, which has a gas outlet; the second gas heater, whose inlet is connected with the gas outlet of the second gas delivery device, and whose outlet is connected with the interlayer connected. By adopting the vacuum pumping method and its device of the present invention, the vacuum pumping time of multi-layer thermal insulation storage tanks, tank containers, and tank trucks is shortened from 7-15 days to 3-6 days, which greatly shortens the time for high-vacuum multi-layer thermal insulation storage tanks. , tank container, tank car manufacturing cycle, reducing manufacturing costs.

The invention discloses a soil chamber medium replacement method for a shield tunneling machine in a freezing process. Slag and soil mixed slurry in a soil chamber is replaced by bentonite slurry, then external soil is subjected to freeze construction, and the bentonite slurry in the soil chamber is replaced by air when a freeze circle on a cutter is formed preliminarily. Due to high fluidity andsensitivity in pressure transmission of bentonite slurry, thoroughness in air replacement can be guaranteed. After replacement is completed, only a small part of frozen soil needs to be cleared in chamber opening for cutter replacement, construction efficiency is greatly improved, labor saving is realized, and safety in construction is realized. The soil chamber medium replacement method is applied to the technical field of chamber opening for cutter replacement of the shield tunneling machine.

The invention discloses an ecological floating bed for an urban river channel, and belongs to the technical field of floating beds. The ecological floating bed for the urban river channel comprises afloating bed piece and a placing disc, the placing disc is connected to the floating bed piece in a sliding manner; a floating bed piston cylinder and a connecting chute are arranged on the floating bed piece; the floating bed piston cylinder is communicated with a connecting sliding groove, the two ends of the floating bed piston cylinder are slidably connected with rotating piston pieces, the ends, away from the connecting sliding groove, of the rotating piston pieces are fixedly connected with first springs, and the ends, away from the rotating piston pieces, of the first springs are fixedly connected to the floating bed piston cylinder; shaking of the floating bed piece can be reduced, water in the river channel can be adsorbed and purified through an adsorptive nano-material, the stirring speed and range can be increased, meanwhile, the adsorptive nano-material can be conveniently replaced more thoroughly, then the adsorption and purification effects of the adsorptive nano-material can be improved, and the adsorption and purification speed is increased.

The invention provides a coal mine underground ventilation device which comprises air exhaust pipelines, an air exhaust fan and an air sucking fan. A protective box body is arranged on a device body;two locking doors are arranged on one side of the protective box body, fixed to the side wall of the protective box body through fixing bolts, and rotatably opened and closed on the protective box body through connecting hinges; the air exhaust fan is arranged on the inner side of one of the locking door in an embedded mode, a storage power supply is arranged at the bottom of the inner side of theother locking door in an embedded mode and electrically connected with the air exhaust fan and the air sucking fan, and an outage control panel is further mounted on the side wall of the inner side of the other locking door; and a locking door is fixed to the other side of the protective box body through fixing bolts, and the air sucking fan is arranged on the inner side of the locking door in anembedded mode. According to the coal mine underground ventilation device, the arranged storage power supply can continuously provide necessary power supplies for the air sucking fan and the air exhaust fan under the condition of outage of the device, and thus continuous fresh air is conveniently provided for the interior of a coal mine.

The invention provides a kelp gametophyte cloning device and a culture method of kelp gametophyte and aims at solving the problems that the cultivation speed is low and the kelp gametophyte is easy to pour out and run off when a culture solution is replaced in the prior art. The technical scheme is as follows: in the kelp gametophyte cloning device, a support frame comprises a plurality of support rods, an upper plate layer and a lower plate layer, wherein an illumination light source is arranged on the upper plate layer, at least one cultivation unit is arranged on the lower plate layer, each cultivation unit comprises a transparent vessel and a rotating device, a hanging culture bag is arranged in the transparent vessel, the rotating device is provided with a magnetic rotor arranged at the bottom in the transparent vessel and an electric rotating device arranged at the outer bottom surface of the lower plate layer, the kelp gametophyte is arranged in the hanging culture bag to be cloned, and the electric rotating device and the illumination light source are controlled to rotate and illuminate by a controller. The kelp gametophyte cloning device can be used for conveniently and thoroughly replacing the culture solution without air inflation, the kelp gametophyte has the high growth speed, and the contamination phenomenon during cloning of the gametophyte is avoided.

The invention discloses a manufacturing method of lead brass extracted from valve waste copper. The lead brass extracted from the valve waste copper is equivalent in weight and chemical component in new manufacturing of an original valve; reduction and purification are performed mainly through microbial activities after surface cleaning; then, electric slag is remolten in vacuum; and finally, recovery is performed. The lead brass extracted from the valve waste copper is higher in recovery rate; and the recovered lead brass is high in quality, convenient to recover, low in cost and wide in application range.

The invention provides a dedusting and heat dissipating structure for a charging pile. The dedusting and heat dissipating structure includes a charging pile body, an air inlet duct and an air exhaust duct. The air inlet duct and the air exhaust duct are disposed symmetrically on the left and right sides of the charging pile body. The air inlet duct and the air exhaust duct have an overall shape of a pentagonal prism, and the central portion of an air duct inside is provided with a baffle plate to form two channel portions which are U-shaped. An air inlet of the air inlet duct is provided with a first dedusting net layer. A U-shaped bottom of the air inlet duct is provided with an electrostatic net, a contact part of an air outlet of the air inlet duct with the charging pile body is provided with a second dedusting net layer. An air outlet of the air exhaust duct is provided with a third dedusting net layer. According to the invention, the dust in the air can be filtered, and the charging pile is also allowed to have an efficient heat dissipating effect.

The invention relates to a cleaning and clean keeping device for a human body electron detection mirror and an application method. The cleaning and clean keeping device specifically at least comprisesan equipment body, an infection preventing cylinder and a sterilization device. The infection preventing cylinder is specially used by special people. The sterilization device is arranged at the bottom of the equipment body. The infection preventing cylinder is assembled in the space in the infection preventing equipment body. The infection preventing cylinder is arranged on the bottom end face of the sterilization device. The shape of the part of the contact face of the upper end face of the sterilization device and the bottom of the infection preventing cylinder is a protruding block in anygeometrical shape. The contact part of the bottom of the infection preventing cylinder and the upper end face of the sterilization device is a groove with a corresponding shape. The outer end face ofthe base of the infection preventing cylinder and the upper end face of the bottom end face of the sterilization device are arranged in a convex-concave sleeving manner so that the infection preventing cylinder specially used by special people can be conveniently sleeved and replaced. According to the cleaning and clean keeping device for the human body electron detection mirror and the application method, the problem of repeated multi-time contact with a contaminated electron mirror and cross infection does not exist, and the cleaning and clean keeping device is high in practicability and has wide purposes particularly in the fields of medical treatment, hospitals and the like.

The invention discloses a soil chamber medium replacement method for a shield tunneling machine in a freezing process. Slag and soil mixed slurry in a soil chamber is replaced by bentonite slurry, then external soil is subjected to freeze construction, and the bentonite slurry in the soil chamber is replaced by air when a freeze circle on a cutter is formed preliminarily. Due to high fluidity andsensitivity in pressure transmission of bentonite slurry, thoroughness in air replacement can be guaranteed. After replacement is completed, only a small part of frozen soil needs to be cleared in chamber opening for cutter replacement, construction efficiency is greatly improved, labor saving is realized, and safety in construction is realized. The soil chamber medium replacement method is applied to the technical field of chamber opening for cutter replacement of the shield tunneling machine.

A method and system for switching atmosphere smoothly and quickly and its application, which can solve the problem that the existing reversing valve system cannot replace the atmosphere in the microreactor smoothly and quickly, thereby affecting the reliability, repeatability and accuracy of the analysis process . The airflow reversing unit of the present invention quickly switches the intake airflow flowing to the downstream; the inlet pressure controller and the pressure transmitter jointly control the pressure difference between the intake airflows to be close to zero, so that the switching process is smooth and fast. The invention can realize the smooth and rapid switching of the component concentration of the downstream airflow in a manner close to the ideal rectangular wave. The invention can be applied to analyze the multi-stage in-situ reaction process of solid particles based on atmosphere switching; and quantitatively characterize the diffusion and back-mixing of the gas flow in the microreactor.

A metering unit for granular material includes a conveyor disk driven by a drive motor and rotating approximately concentrically to an inner cover surface of a housing. The conveyor disk has a recess for the reception of at least one grain to be separated via at least one revolution of the conveyor disk. In the interaction with a groove-shaped and / or slanted profile of the inner cover surface, the recess forms a conveyor pocket for conveying one grain or a plurality of grains in the direction toward an outlet opening extending approximately tangentially from the inner cover surface. For varying an axial distance to the inner cover surface and / or a width of the conveyor pocket, the conveyor disk, which is rotationally fixedly connected with the drive motor, is adjustable in the axial direction of the drive motor.

The invention relates to a boiler water high-utilization-rate method, which comprises the following steps of: putting a collection basin into the bottom of a high-temperature furnace, adding 3 per thousand to 8 per thousand of anhydrous trisodium phosphate into a high-temperature furnace, heating the high-temperature furnace to 400-500DEG C for processing, taking out the collection basin, cooling and icing collected precipitates, and putting the collection basin back to the bottom of the high-temperature furnace; adding a new material into the high-temperature furnace in proportion, raising the temperature to melt the cooled mixed precipitate, and then reducing the temperature and testing the furnace to produce glass; and raising the temperature in the high-temperature furnace to 450DEG C for processing for 24h. The method further involves a precipitation basket, the collection basin is pushed into the precipitation basket, and then the precipitation basket is placed at the bottom of the high-temperature furnace; the collection basin and the precipitation basket are made of nickel-based alloy; according to the boiler water high-utilization-rate method, a large amount of time and cost are saved, and the production efficiency is remarkably improved.

The invention relates to the technical field of heat exchange, in particular to a multi-stage series displacement heat exchange system. It includes an evaporator, a compressor, a condenser, and a first throttling member connected through a working fluid channel; the outlet of the evaporator is connected to the inlet of the compressor, and the outlet of the compressor is connected to the condenser Inlet, the outlet of the condenser is connected to the inlet of the first throttle, and the outlet of the first throttle is connected to the inlet of the evaporator; it is characterized in that: the outlet of the condenser and the first A multi-stage series heat exchange area is arranged between the inlets of the throttling element. The multi-stage series heat replacement area established between the condenser and the first throttling member isolates the condensation area and the evaporation area of ​​the system, and at the same time enhances condensation, isolates the influence of condensation waste heat on the evaporation area, making the system Energy efficiency is greatly improved.

The invention discloses an agricultural rapid automatic fertilization device. The agricultural rapid automatic fertilization device comprises a motor and a fixed rod, and is characterized in that a threaded sleeve is fixed in a main body; a threaded column penetrates through the threaded sleeve; a stirring cylinder is mounted on the right side of the threaded column, and the main body and the stirring cylinder are in welded connection; the motor is installed below the stirring cylinder and closely attached to the main body; a fixator is arranged on the outer surface of the motor; a bolt penetrates through the fixator; an inlet penetrates through the upper right portion of the stirring cylinder; the stirring cylinder is connected with the inlet in a welded mode; a rubber cover is bonded tothe outer portion of the inlet; and the inlet is tightly attached to the leather cover. The agricultural rapid automatic fertilization device is provided with a semicircular spray head, so that spraying is more complete, crops better absorb fertilizer, and the phenomenon that harvest is not good due to the fact that nutrients absorbed by agricultural products are not uniform and the growth speed is low is avoided.

The invention discloses a maintenance device for front-mounted machines in open-pit coal mines, which comprises a bottom plate fixedly installed in the ground, a rectangular box is fixedly installed on the top of the bottom plate, and a drain pipe is fixedly connected to one side of the rectangular box. One side of the rectangular box is rotatably connected with a top plate, the bottom of the top plate is in contact with the top of the rectangular box and the top of the ground, the four corners of the top of the bottom plate are welded with supporting columns, and the inner walls of both sides of the rectangular box are Two transverse plates are symmetrically welded, and the tops of the four support columns are respectively welded to the bottoms of the four transverse plates. The beneficial effects of the present invention are: the present invention has a compact structure, can effectively clean the chassis of the front-mounted machine, prolongs the service life, and can adjust the height of the moving plate according to the height of the maintenance personnel, which is convenient for the maintenance personnel to perform maintenance operations, making it possible to Improve maintenance efficiency, clean the chassis, adjust the level of the bucket, change the engine oil more thoroughly, and reduce the labor intensity of workers.

The invention discloses an electrode-bag combined dust remover and relates to the technical field of industrial dust removal equipment. The electrode-bag combined dust remover specifically comprises an air purifying chamber, a driving box fixedly mounted on the top of the air purifying chamber, brush frames movably mounted in the air purifying chamber and a fork frame fixedly mounted in the air purifying chamber. The bottom of the air purifying chamber fixedly communicates with bag smoke hoppers and an electrode smoke hopper. A chamber door is hinged to the outer surface of the air purifying chamber. The outer side of the air purifying chamber fixedly communicates with an air inlet smoke box. Through arrangement of the brush frames and the driving box, an output gear in the driving box rotates to drive transmission gears to rotate so as to drive transmission lead screws to rotate, so that the brush frames are clamped by upper adjusting sleeves and lower adjusting sleeves to move vertically along the transmission lead screws to drive first bristles and second bristles to clean high-specific-resistivity dust deposited on the surface of electrode plates, and the anti-corona phenomenonis avoided, the consumed power of the dust remover is effectively reduced, the performance of the dust remover is improved, and the dust removal efficiency is improved.

The invention provides a medical high-pressure oxygen crystalloid solution. In the crystalloid solution, oxygen pressure is 1300 + / - 100 mmHg, and the amount of dissolved oxygen is 135 + / - 10 mg / L. The invention further provides an apparatus for the medical high-pressure oxygen crystalloid solution. The apparatus comprises an enclosed overpressure resistant storage tank; the upper part of the storage tank is provided with an input pipeline for the crystalloid solution, two oxygen supply pipelines, at least one exhaust valve and at least one safety valve, wherein the exhaust valve and safety valve are provided with pressure gages, the bottom of the storage tank is provided with an output pipeline for the crystalloid solution, the two oxygen supply pipelines are respectively provided with a filter, the outlet end of one of the two oxygen supply pipelines is located above the liquid surface of the crystalloid solution, the other of the two oxygen supply pipelines is inserted into the crystalloid solution, the outlet end of the other of the two oxygen supply pipelines is close to the bottom of the storage tank, and the input pipeline for the crystalloid solution, the oxygen supply pipelines and the output pipeline for the crystalloid solution are provided with valves. The medical high-pressure oxygen crystalloid solution provided by the invention can realize high-efficiency and rapid oxygen supply after being injected into a body and can be used for on-site first aid.

The invention relates to an activated sludge reaction system which comprises a reactor and a replacement device connected with the reactor, wherein the replacement device comprises a replacement tank which is basically parallel to the high pressure area of the reactor, and a water inlet valve and a water outlet valve which are communicated with the replacement tank; the replacement device also comprises an exhaust valve arranged on the top of the replacement tank; a first circulating pipeline and a second circulating pipeline are also arranged; the replacement tank is communicated with the reactor respectively by virtue of the first circulating pipeline and the second circulating pipeline; the first circulating pipeline is provided with a first circulating water valve, and the second circulating pipeline is provided with a second circulating water valve; and the first circulating pipeline or the second circulating pipeline is provided with a flow push device. The activated sludge reaction system can be used for replacing the inflow water and outflow water of the rector by the replacement device, so that the total energy consumption is lower than the water inlet energy consumption of a reactor barrel.

Disclosed is a metering unit for granular material with a conveyor disk driven by a drive motor and rotating approximately concentrically to an inner cover surface of a housing. The conveyor disk has a recess for the reception of at least one grain to be separated via at least one revolution of the conveyor disk. In the interaction with a groove-shaped and / or slanted profile of the inner cover surface, the recess forms a conveyor pocket for conveying one grain or a plurality of grains in the direction toward an outlet opening extending approximately tangentially from the inner cover surface. For varying an axial distance to the inner cover surface and / or a width of the conveyor pocket, the conveyor disk, which is rotationally fixedly connected with the drive motor, is adjustable in the axial direction of the drive motor.