91results about How to "No loss" patented technology

The invention relates to a hardware routing table look-up method based on segmented unified storage. The method comprises the following steps: firstly, acquiring an IPv4 / IPv6 routing prefix, dividing the IPv4 / IPv6 routing prefix into 1-4 address fields according to 32 bits, allocating a unique forward and backward segment identifier for each field, constructing table entries containing the segment identifiers, 32-bit segment data and a next hop, and uniformly storing the table entries into the same TCAM. During table lookup, segmenting an address to be looked up according to the same rule, querying the TCAM from a first segment by taking segment data as a key, and recording a backward segment identifier and a next hop after hit; and if the backward segment identifier is invalid, directly returning to the corresponding next hop, and if the backward segment identifier is valid, continuing query by taking the identifier and the next segment of data as a joint key. And when the table item is not hit or the identification verification fails, selecting the table item with the longest prefix and the valid next hop in the matched section, and returning to the next hop. According to the invention, IPv4 / IPv6 routing table entries can be uniformly stored, the TCAM space utilization rate is improved, and meanwhile, the hardware table look-up efficiency is guaranteed.

The utility model relates to a water-soluble hexavalent chromium filtering and collecting device, which belongs to the field of laboratory collection, and comprises a Buchner funnel (1) and a tray (2), the Buchner funnel (1) comprises a funnel opening (3) and a funnel neck (4), the funnel neck (4) is arranged at the bottom of the funnel opening (3), the funnel neck (4) is connected with the tray (2), the Buchner funnel (1) is taken out, and a beaker (11) filled with filtrate is taken out at the same time. The Buchner funnel (1) is provided with a suction filtration bottle (5), the suction filtration bottle (5) is provided with an extraction opening (6), the extraction opening (6) is connected with an extraction pipe (7), the extraction pipe (7) is connected with the suction filtration bottle (5), and the suction filtration bottle (5) is connected with the suction filtration bottle (5). The exhaust pipe (7) is connected with a vacuum pump (8), so that the filtering effect is improved, and the filtering is faster.

The utility model discloses an emulsion bottle equipped with switch pump, including bottle body and switch pump, bottle body and switch pump detachable connection, switch pump includes shoulder cover, pump core and head cap, shoulder cover and bottle body detachable connection, pump core installs on the shoulder cover, head cap installs on the pump core, switch pump still includes switch mechanism, and switch mechanism is used to prevent switch pump from being mistaken touch, so as to prevent the accidental loss or loss of content. The emulsion bottle includes bottle body and switch pump, the switch pump includes shoulder cover, pump core, head cap and switch spare, is used for preventing switch pump from being mistaken touch, so as to realize the accidental loss or loss of content, when taking content, need to rotate head cap to change the position of first switch spare, remove the restriction of second switch spare to first switch spare, can only make head cap be pressed, and then play the effect of mistaken touch prevention, guarantee that content is normally taken, and will not accidentally lose or lose.

The application provides a three-dimensional reconstruction method based on multi-dimensional information fusion and a convolutional neural network, and comprises the following steps: acquiring polarized sub-images of a measured object under four transmission polarization directions and including multiple detection spectral bands through a multispectral polarization camera; performing image registration and joint denoising on all images; calculating polarization parameters of the measured object, combining spectral information and polarization information to calculate an azimuth angle and a zenith angle of the measured object; and acquiring surface normal vector component three-dimensional data of the measured object through a surface normal reconstruction model constructed based on a convolutional neural network and with the aid of physical prior knowledge. The method provided by the application can effectively restore the texture details of the surface of the measured object, can realize fast three-dimensional information acquisition of a measured object with a surface simultaneously having a diffuse reflection and a specular reflection characteristic in a complex indoor or outdoor scene under illumination conditions, and is helpful to expand the application range of the polarization three-dimensional reconstruction technology.

The application discloses a blue fluorescent organic light emitting diode, which comprises a substrate, an anode, a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, an efficiency enhancement layer, an electron transport layer, an electron injection layer and a cathode in sequence; the efficiency enhancement layer material is 4-(2,7-di(naphthalene-2-yl)-9H-carbazole-9-yl)benzonitrile; the light emitting layer is composed of a host material and a fluorescent guest dopant; the host material is 9-(4-(10-phenyl-9-anthryl)phenyl]9H-carbazole; and the fluorescent guest dopant is 1-4-di-[4-(N,N-diphenyl)amino]styrylbenzene. Through a high-energy triplet state anti-inter-system crossing process, the efficiency enhancement layer can obtain 100% of the exciton utilization rate at most, the electroluminescent efficiency of the device is greatly improved, and good stability is maintained.

This invention relates to the field of CMOS integrated circuit manufacturing processes and discloses a method for fabricating a PIP capacitor. First, the WSi of the lower electrode of the PIP capacitor is reduced by implantation. x Thin film stress is reduced, and then parasitic SiO2 on the surface of the lower electrode of the PIP capacitor is reduced by dry etching. WSi on the lower electrode is reduced by implantation. x Thin-film stress can improve the reliability of PIP capacitors; the principle for selecting the injection energy is to maximize the depth (R0) of the injection Gaussian distribution. p +3ΔR p ) to reach the entire WSi x 80% of the film thickness; WSi after implantation x The stress in the thin film was reduced by an order of magnitude by selecting phosphorus to eliminate WSi. x Thin film stress is a concern because phosphorus is frequently used for N-type polycrystalline doping. Simultaneously, phosphorus implantation also increases the polycrystalline doping concentration and reduces polycrystalline depletion.

The application belongs to the technical field of medicine, and particularly relates to a method for embedding micro-organoids or cells with agarose. The method for embedding micro-organoids or cells with agarose comprises the following steps: 1) fixing micro-organoids or cells with a fixing solution; 2) washing the fixed organoids or cells, removing supernatant after centrifugation, and obtaining organoid or cell precipitate; 3) pre-embedding organoids or cells with agarose; 4) taking out the agarose pre-embedded organoids or cells after demolding, and transferring the agarose pre-embedded organoids or cells to an embedding box, and sequentially performing ethanol gradient dehydration, transparent treatment and paraffin wax immersion treatment on the sample according to a specific procedure; and 5) paraffin embedding. Compared with the prior art, the application has the following beneficial effects: improving organoid / cell density; by agarose embedding, reducing the relative dispersion volume of organoids / cells, significantly improving the density of the sample in the slice, facilitating observation and detection, and having good detection effect.

The invention relates to the technical field of lithium ion batteries, and particularly provides a charging and discharging method of a lithium ion battery. The invention aims to solve the problem of poor cycle performance of the lithium ion battery of the existing blending system. Therefore, the charging and discharging method of the lithium ion battery comprises the following steps: charging the lithium ion battery according to a first constant-current charging mode until the voltage reaches V1, and then converting into a first constant-voltage charging mode; continuously charging according to the first constant-voltage charging mode, and switching to a second constant-current charging mode until the charging rate is reduced to a second charging rate C2; continuously charging according to a second constant-current charging mode, and switching to a second constant-voltage charging mode until the voltage reaches Vmax; continuously charging according to a second constant-voltage charging mode until the charging rate is reduced to a cut-off charging rate Cmin, and stopping charging; and / or, the lithium ion battery discharges according to the first constant-current discharge mode until the voltage is reduced to V2, and then the lithium ion battery discharges according to the second constant-current discharge mode.

The invention discloses self-compacting concrete and a preparation method thereof, and relates to the technical field of concrete, and the concrete comprises cement, fly ash, mineral powder, water, sand, stone and a modified water reducer. The modified water reducing agent is a polymer prepared from a hydroxyl-containing monomer I, a double-bond-containing acyl chloride monomer II, an unsaturated polyether monomer III and a double-bond-containing monomer IV in a mass ratio of (0.5-1.5): 1: (9-12): 1 through esterification reaction and double-bond addition polymerization, and hydroxyl, carboxyl and a polyether side chain are introduced into a molecular chain of the polymer at the same time. According to the water reducer, through the synergistic effect of hydrogen bond stable adsorption, steric hindrance and electrostatic repulsion, the compressive strength of concrete is improved, the slump is reduced, the balance of super-long retarding and high-strength development is achieved, and the comprehensive performance is excellent.

The utility model discloses a plastic vacuum forming machine capable of cutting and blanking, which comprises a plastic vacuum forming machine main body with an existing structure, two sides of the plastic vacuum forming machine main body are respectively provided with a feeding assembly and a material receiving assembly, and a cutting assembly is arranged between the plastic vacuum forming machine main body and the material receiving assembly; the feeding assembly comprises a feeding support and a feeding roller rotationally connected to the feeding support, a plastic film barrel is installed and connected to the feeding roller, the end of at least one end of the feeding roller penetrates out of the feeding support to be fixedly provided with a ratchet wheel, a limiting block is fixed to the feeding support, an inserting channel is formed in the limiting block, and the inserting channel is communicated with the plastic film barrel. A balancing weight is arranged in the insertion channel, and a limiting surface matched with the ratchet wheel is arranged on the balancing weight; compared with the prior art, the feeding device has the advantages that the feeding device is simple in structure, reverse rotation of the feeding roller can be prevented due to the ratchet wheel, and discharging and winding can be facilitated due to the cutting assembly.

The utility model provides a self-powered intelligent water meter based on electromagnetic power generation. The self-powered intelligent water meter comprises a first built-in cavity, a second built-in cavity, a water inlet and a water outlet, the first built-in cavity and the second built-in cavity are connected through a bolt, the water inlet is communicated with the first built-in cavity, and the water outlet is communicated with the second built-in cavity. According to the utility model, the electric signal generated by the coil is utilized, the self-power supply technology and the self-sensing technology are combined, and multiple functions are realized through the simple structure; a switch control mode is adopted in the power supply management system, so that voltage and current are only used when needed, and no electric energy is consumed in other time; the power management circuit realizes a fully-automatic switching function through battery voltage detection, so that the whole system comprises the wireless transmission module and can be called as a real self-powered system; the energy of the energy source is fully and efficiently utilized, so that no energy loss exists in the energy conversion and distribution process.

This invention provides a film that combines thermal conductivity, thermal insulation, and electromagnetic shielding. It includes a high thermal conductivity film, a phase change film, and a thermally insulating electromagnetic shielding film. The high thermal conductivity film and the thermally insulating electromagnetic shielding film are respectively disposed on both sides of the phase change film. The thickness of the high thermal conductivity film is 0.01–0.5 mm; the thickness of the phase change film is 0.1–1 mm; and the thickness of the thermally insulating electromagnetic shielding film is 0.05–1.5 mm. This invention, combining thermal conductivity, thermal insulation, and electromagnetic shielding, can effectively solve the problem of poor heat dissipation in electronic devices such as mobile phones under high load, while reducing the impact of electromagnetic radiation on users. The product is lighter, thinner, and more flexible; the entire film product can be completely folded without material breakage.

The present application relates to the technical field of pesticides, and discloses a phase change eutectic carrier embedded with a photothermal agent as well as a preparation method and application thereof.The phase change eutectic carrier embedded with the photothermal agent mainly comprises a photothermal agent, a fatty acid, an organic solvent and water.The preparation process of the preparation is simple, the conditions are mild, a large number of additives are not needed, and the preparation can be quantitatively prepared.The dispersion and utilization rate of the bactericide can be improved through eutectic, and the effectiveness of the bactericide can be improved.The preparation is suitable for various application modes such as seed coating and soil treatment, can play various synergistic functions such as temperature response release, prolonging drug retention time, enhancing adhesion and permeability on the surface of pathogenic bacteria, and is a kind of green and efficient bactericide dosage form, which has a wide application prospect in green and intelligent agriculture.

The utility model provides a spliced wood board adopting outwards-turned sharp-angled barbs for insertion, a group of outwards-turned sharp-angled barbs formed by obliquely cutting a section of notch from the edge of a body are uniformly distributed on the butt joint end face of a unit wood chip at intervals, and the shape of the notch is matched with that of the outwards-turned sharp-angled barbs; the shapes and the distribution positions of the outwards-turned sharp-corner barbs on the butt joint end faces of every two adjacent unit wood chips are the same, but the directions of sharp corners of the outwards-turned sharp-corner barbs on the butt joint end faces of every two adjacent unit wood chips are opposite, and during splicing, the outwards-turned sharp-corner barbs of every two adjacent unit wood chips are obliquely inserted into the notches of the corresponding outwards-turned sharp-corner barbs of the opposite unit wood chips. The other butt-joint end faces of every two adjacent unit wood chips are attached together, and all the butt-joint end faces of every two adjacent unit wood chips are connected in a bonding mode through adhesives. According to the spliced wood board, when the outwards-turned sharp corner barbs on the butt joint end faces of the unit wood chips are machined, no material needs to be removed, wood loss cannot be caused, the total length of the spliced wood board is consistent with the accumulated length of the unit wood chips, and wood resources can be effectively saved.

The invention provides a magnetic suspension generator rotor vibration suppression device and method, and belongs to the technical field of magnetic suspension generators, and the device comprises an electromagnetic bearing, a passive magnetic bearing and a damper; the electromagnetic bearing comprises an iron core and two coil assemblies, the iron core is installed on the outer wall of the rotor, and the two coil assemblies are arranged around the iron core; the passive magnetic bearing comprises an inner-ring permanent magnet and an outer-ring permanent magnet, the inner-ring permanent magnet is mounted on the outer wall of the rotor, the outer-ring permanent magnet is mounted on the inner wall of the generator shell, and the two corresponding permanent magnets have the same magnetism; the damper is installed on the generator and provided with a damping body and a stress sensor, one end of the rotor is connected to the damping body, and one end of the damping body is connected to the stress sensor. According to the magnetic suspension generator rotor vibration suppression device provided by the invention, by virtue of the radial and axial targeted suppression design, the out-of-control galloping of the rotor caused by excessive vibration is effectively avoided, and the operation stability and safety of the generator are guaranteed.

The utility model belongs to the technical field of petroleum drilling and production mechanical equipment, and discloses a vertical transmission chain box with a novel structure. The input shaft and the output shaft are arranged in parallel, and the chain is in vertical transmission. A push disc clutch is installed at the end of a chain box input shaft assembly, an inner gear ring is designed to be connected with a clutch friction disc, meanwhile, a connecting disc is designed to be connected with the inner gear ring and a chain wheel, and rolling bearings are arranged inside and outside the chain wheel. A friction hub is designed at the end of the output shaft, and a pneumatic tire clutch and a connecting disc are installed outside the friction hub to serve as a reaction torque releasing device. According to the chain box, independent hanging or separation can be achieved through power, and abrasion and equipment loss caused by idle running of the chain are avoided. Meanwhile, the anti-torque release device arranged on the output shaft can release the deformation energy of the drill rod, the drill rod cannot rapidly and reversely rotate, and the safety performance of petroleum drilling equipment is greatly improved.

This application discloses a system, method, apparatus, medium, and program product for implementing multiple monitoring centers in a fire alarm system. The system includes: a fire alarm system equipment layer; a main monitoring center; at least one backup monitoring center; and a proxy module for establishing an indirect communication connection between the fire alarm system equipment layer and the at least one backup monitoring center, synchronizing data from the fire alarm system equipment layer with the main monitoring center, and scheduling and distributing the data to each backup monitoring center. The technical solution in this application can implement multiple monitoring centers without loss of resources, configuration, or additional physical wiring at the fire alarm system equipment layer.

This invention discloses an end-face coated crystal optical element for a laser resonator and its fabrication method, belonging to the field of optical element fabrication. It includes an optical crystal, a high-reflectivity film disposed on one end face of the optical crystal, and a partially transmissive film disposed on the other end face. The high-reflectivity film sequentially includes Y-coatings along the end face of the optical crystal outwards. b F3 First Floor, H f O2 first layer, Y b F3 Second Layer, H f O2 second layer...Y b F3, Q layer, H f O2, Q layer. This invention utilizes Y... b 3+ Sensitization improves pump absorption efficiency and through Y b To E r Energy transfer effectively alleviates high-doped E r The self-termination effect in YAG lasers enables high efficiency and high energy output of 2940nm lasers, making them suitable for fields such as medical aesthetics and precision machining.

This invention discloses a method for testing the strength of engineering plastics. It addresses the problem of over-reliance on operator subjective experience and inconsistent judgment standards in determining the ultimate force of engineering plastics. This invention quantifies the difference between bending force and inversion stress, sets a standardized error threshold, and accurately determines whether the two sets of force values ​​exhibit an arithmetic progression. This objectively distinguishes between valid and abnormal detections from a data perspective. For abnormal detections, a retest signal can be directly generated to quickly locate problems such as loose clamping or excessive force loss, reducing invalid detections. For normal test data, a progressive logic of difference range prediction and inversion stress range verification accurately pinpoints the ultimate force of the engineering plastic, clearly distinguishing between the normal buffer deformation stage, the stage of buffer elasticity depletion and synchronous change, and the critical fracture large bending stage.

The utility model discloses a kind of liquid material with bag type packaging machine and system, splash-proof mechanism is equipped between feeding mechanism and heat sealing mechanism;The feeding mechanism includes liquid filling machine, filling pipe and adjusting support;The feed inlet of the liquid filling machine is equipped with feed pipe, the discharge port is equipped with discharge pipe, and filling pipe is connected by discharge pipe;The filling pipe is inserted in the insertion hole of adjusting support, and located above two machine clamp main bodies on feeding station;The splash-proof mechanism includes two clamping plate main bodies, two clamping plate cylinders respectively installed at the both ends of cylinder support, and suspension support;Two clamping plate main bodies are placed opposite, and located above two machine clamp main bodies on leveling station, and respectively located at the front and back sides of bag mouth of packaging bag;Two clamping plate cylinders are respectively connected with corresponding clamping plate main body, and control the opening and closing of two clamping plate main bodies;The utility model meets the feeding demand of liquid material, avoids the splashing condition caused by leveling process.

The invention discloses a silicon negative electrode active material which sequentially comprises a silicon-based material inner core, a flexible solid electrolyte or gel electrolyte middle layer and a carbon-coated outer layer from inside to outside, the flexible solid electrolyte or gel electrolyte middle layer comprises a conductive agent, and the conductive agent comprises a carbon nanotube. According to the silicon negative electrode active material, the surface of the silicon-based material is coated with the flexible solid-state or gel-state electrolyte, so that the volume change of the negative electrode active material in the charging and discharging process is effectively relieved, the electrolyte is isolated, the stability of the negative electrode active material is improved, and the negative electrode active material has relatively high reversible specific capacity and relatively high specific surface area; and excellent long cycle performance is shown.

The application provides a composite thermal fluid generating device, system and method, which is arranged in an oil pipe in a well and comprises a generating part and an input pipeline in communication with the generating part; wherein the input pipeline inputs generating raw materials into the generating part, the input pipeline comprises a plurality of input channels for transporting single raw materials, and the input channels comprise a plurality of pipeline areas connected with the generating part and areas between the oil pipe and the pipeline. According to the technical scheme of the application, the device is injected into the oil pipe or taken out from the oil pipe by using a coiled tubing, the operation process is simple and convenient, the cost is low, the heat loss of the composite thermal fluid along the pipeline can be reduced, the heating effect of the oil layer is improved, and the development effect of the oil layer is ensured.

The invention discloses a manufacturing method of a U-shaped groove, which is characterized in that a photoresist reserved on a field oxide in an X-direction photoetching process of the U-shaped groove can protect a hard mask on the field oxide of a Y-direction opening of a non-U-shaped groove region, the loss of the hard mask on the field oxide of the Y-direction opening of the non-U-shaped groove region cannot be caused, and a U-shaped groove process window is enlarged; in the process of performing X-direction silicon etching to form a U-shaped groove, silicon at an X-direction opening at a non-overlapping position of an X-direction opening pattern and a Y-direction opening pattern is protected by a mask first silicon oxide layer and a mask second silicon nitride layer, when the mask at the position is removed, the mask second silicon nitride layer is removed firstly, then the first silicon oxide layer is removed, and the first silicon oxide layer is removed after the mask second silicon nitride layer is removed. The SIN hard mask on the field oxide is not damaged, and the morphology standard of the U-shaped groove can be ensured.

The utility model belongs to the technical field of continuous casting roller welding, and particularly relates to a welding machine tailstock capable of continuously keeping clamping, which comprises a tailstock lower part. The worm reducer drives the lead screw to drive the movable nut, so that the upper tailstock body moves forwards to clamp a roller sleeve needing to be welded under the constraint of the linear bearing and the cylindrical guide rail, when the welded roller sleeve is loosened, the worm reducer rotates reversely to drive the upper tailstock body to move backwards to loosen the welded roller sleeve, and the automatic clamping function of the welded roller sleeve is achieved. When the roller sleeve is clamped and welded, the live center and the tailstock sleeve can move backwards to enable the belleville spring set to generate pre-pressure, in the surfacing process of the roller sleeve, linear expansion can be generated in an inner hole of the roller sleeve and the axial length direction along with temperature rise of the roller sleeve, and the live center and the tailstock sleeve enable clamping force to be maintained within a certain range under the pre-pressure effect of the belleville spring set. And the clamping state is continuously kept, so that the roller sleeve is effectively clamped without losing rotation, the damage to equipment caused by linear expansion in the axial direction is eliminated, and the deformation of a tailstock of a welding machine is reduced.

The utility model discloses a battery charging and discharging management circuit supporting bidirectional current limiting. The battery charging and discharging management circuit comprises a power supply bus; the charging switch, the discharging switch and the current collector are connected to a power bus in series; the output end of the charging and discharging driving circuit is connected with the charging switch and the discharging switch; one end of the regulation and control circuit is connected with the current collector, and the other end is connected with the input end of the charging and discharging driving circuit; the current limiting circuit comprises a switch circuit and a switch driving circuit, the switch circuit is connected with the charging switch and the discharging switch in parallel, and the control end of the switch circuit is connected with the switch driving circuit; the regulation and control circuit further controls the state of the switch driving circuit based on the collected information so as to regulate and control the charging current or the discharging current flowing through the switch circuit. According to the management circuit, the current limiting mode can be dynamically switched in a charging and discharging bidirectional path, complex inductors, capacitors and multi-stage switching devices in a traditional scheme are omitted, the number of elements and the size of the circuit are remarkably reduced, the hardware cost is reduced, and the overall energy efficiency is high.

The utility model discloses a dustproof anti-reversion optical fiber plug, which comprises a first optical fiber, an outer sleeve and a ceramic tube, the end part of the outer sleeve is connected with a connecting plug, the connecting plug comprises a connecting part and a plurality of elastic sheets consisting of a first elastic sheet and a second elastic sheet, the connecting part is in a circular truncated cone shape, one end of the first elastic sheet is connected with the edge of the connecting part, and the other end of the first elastic sheet is connected with the ceramic tube. An annular clamping groove is formed between the connecting part and the first elastic sheet, and a convex ring is formed between the first elastic sheet and the second elastic sheet; gaps are formed among the elastic sheets, and the elastic sheets are annularly connected to the connecting part; and a dustproof sleeve is sleeved on the elastic sheet. And gaps are formed between the elastic sheets, so that the elastic sheets are easy to stretch and deform. And clamping after butt joint with an interface of an adapter is facilitated. As the elastic sheets are sleeved with the dustproof sleeves, the dustproof sleeves can prevent dust from entering the interior through gaps between the elastic sheets, and the dust is prevented from falling on the end face of the optical fiber. Light propagation is smooth, light loss is avoided, and the reliability of the optical fiber plug is higher.

This invention relates to the field of welding technology, and provides a through-type friction stir welding apparatus and method suitable for different plate thicknesses. The through-type friction stir welding apparatus includes a long needle stirring tool, a backing block, a limiting platform, a clamp, a positioning platform, and a worktable. The long needle stirring tool is mounted on a friction stir welding machine. The backing block is disposed on a limiting groove on the limiting platform. The positioning platform is disposed on both sides of the limiting platform, and the clamp is disposed on the positioning platform. This invention utilizes a through-type friction stir welding technology with a long needle stirring tool and a backing block, which can completely eliminate the potential risks of incomplete penetration and weak bonding at the weld root. By using a backing block made of the same material as the workpiece being welded, no material loss occurs during the through-type welding process, thus eliminating defects at the start of the through-type friction stir weld.

A water pressure testing device, a clamping mechanism for clamping the product to be tested is installed on the workbench, a water pump is used to pump water in the water tank into the sealed pressure tank, an air pump is used to supply pressurized air to the sealed pressure tank, a first valve is arranged on the air path between the air outlet of the air pump and the air inlet of the sealed pressure tank, a second valve is arranged on the water path between the water outlet of the water tank and the water inlet of the sealed pressure tank, a third valve is arranged on the air path between the air outlet of the sealed pressure tank and the air inlet of the product to be tested, a fourth valve is arranged on the water path between the water outlet of the sealed pressure tank and the water inlet of the product to be tested, and a fifth valve is arranged on the water path between the water outlet of the product to be tested and the water tank. The water pressure testing device pressurizes the inside of the product to be tested with the air pump, the pressurization speed is faster, there is almost no loss of test water during the pressurization process, and the air pressure during pressurization is used for pressure relief and drainage, avoiding the need for additional equipment to depressurize the sealed pressure tank, and the structure is simple and reasonable.

The utility model discloses a battery cover production is with receiving device belongs to battery cover production technical field, the utility model discloses a conveyor and screw rod are installed with the flow guide box to the end of conveyor, is set with the chute in the flow guide box, the quantity of chute is two, and the sliding fit of wedge block has in two chutes, the outer surface of two wedge blocks all installs the rectangular block, is set with the through -hole in the flow guide box, and the screw rod rotation cooperation is in the through -hole, and the both ends of screw rod are set up with opposite thread. The utility model discloses the wedge block and the rectangular block of setting are received to the battery cover, when the placing mechanism moves with the activity ring, two wedge blocks close, make the battery cover of conveyer belt end to be in the flow guide box and temporarily store, avoid direct drop or splash, after the placing mechanism moves to the specified position, the wedge block opens again, makes the battery cover of temporary storage and the battery cover of new convey together enter the storage mechanism, and ensure that the material has no loss.

The application discloses a negative pressure deoxygenation system and process, and belongs to the technical field of desalted water deoxygenation. The system comprises a heating system, a deoxygenation system and a vacuum pumping unit connected in sequence, wherein the vacuum pumping unit comprises two-stage vacuum pumping units connected in series. That is, according to the temperature of the desalted water into the deoxygenator, the liquid series vacuum pumping process is used to realize the control of the vacuum degree inside the deoxygenator, so that the dissolved oxygen and other gases are effectively removed. On the basis of ensuring the deoxygenation qualification, the energy consumption and water vapor loss are reduced compared with the existing steam stripping.