30results about How to "Reduce leak rate" patented technology

The utility model belongs to the technical field of waterproof of lower room structures, and particularly relates to a waterproof and anti-leakage structure of a basement connection node. In order to solve the problems that complex water seepage paths are difficult to resist, the maintenance cost is increased due to inconvenience in disassembly and maintenance and a waterproof layer is easy to crack due to insufficient deformation coordination of a rigid assembly and a wall body in the existing single-layer waterproof or permanent fixed installation design, the following scheme is provided: the waterproof structure comprises an existing wall body and a newly-built wall body; a multi-stage water seepage blocking path is formed through the inner waterproof layer and the water stop steel plate, and even if a single layer is damaged, underground water pressure can still be effectively resisted; quick disassembly and assembly are achieved through threaded connection and a clamping structure, wall damage is avoided, and the maintenance cost is remarkably reduced; the flexible coiled material and the sealing rubber strip absorb structural deformation displacement, the fixing block embedment design limits displacement of the waterproof belt, long-term stability under dynamic loads is ensured, and the technical problems that a traditional waterproof layer cracks, is difficult to maintain and poor in adaptability are comprehensively solved.

The utility model relates to the technical field of sealing pipe, and disclose a new energy automobile battery cooling plate connecting sealing pipe structure, including the connecting seat of installation at the cooling liquid import and export department of battery cooling plate, the opening end of connecting seat is equipped with fixed pipe, and the opening end of fixed pipe is connected with infusion pipe through connecting pipe, the one end of connecting pipe away from infusion pipe extends to fixed pipe and is equipped with sealing joint, and the inner wall of one end of fixed pipe close to connecting seat has spherical surface, and the free end of sealing joint is ball head and is close to spherical surface, the one end of sealing joint close to connecting pipe is sealedly connected with the inner wall of fixed pipe through sealing washer, and the outer periphery of connecting pipe is fixedly equipped with fixed ring, the utility model discloses triple sealing mechanism of spherical surface sealing, sealing washer sealing combination mechanical locking, compared with traditional screw connection, can effectively reduce the leakage rate of cooling liquid, thereby satisfying the sealing requirement of high pressure cooling liquid environment.

The utility model relates to industrial automation technical field discloses an industrial standard gas automatic proportioning device, including the cabinet body, the cabinet body inside is physically divided into the gas confluence area of upper part and the electrical control area of lower part, be provided with a plurality of parallel gas treatment branch in the gas confluence area, operation and display panel, set up in the front side of electrical control area, mixer, including outer mixing cylinder and inner mixing cylinder, the lateral wall of outer mixing cylinder is set up with a plurality of communicating holes, a plurality of communicating holes with the export of a plurality of gas treatment branch are linked, back pressure regulating valve, its installation in the export of outer mixing cylinder, in the utility model, through setting back pressure regulating valve, the working environment of core flowmeter is stabilized, and the proportioning precision is promoted, simultaneously, the safety interlock design of its normally closed valve, cooperate electrolytic polishing pipeline and metal face seal joint, on the basis that realizes active safety protection, guarantees the high purity of mixed gas again.

The application discloses a silicon dioxide deposition coating process of a vertical LPCVD device, and comprises the following steps: S1, checking whether the process pipe leaks; S2, blowing the process pipe with nitrogen gas under low pressure; S3, after the leakage rate detection is qualified, nitrogen gas is blown into the gas path pipeline, so that the pressure and the gas flow of the process pipe are stabilized under the pressure and the gas flow conditions set during film deposition; S4, under the set pressure condition, a reaction gas source is introduced, and a silicon dioxide film is deposited on the surface of a semiconductor substrate; and S5, after the silicon dioxide film deposition is completed, nitrogen gas is blown into the process pipe and the exhaust pipeline, nitrogen gas is introduced to increase the pressure to normal pressure, and the boat is discharged. The application has the advantages of simple operation, good stability, high film uniformity and the like, solves the problems of poor film thickness uniformity, high process granularity, poor repeat stability and extremely harsh requirements on process pressure of the existing LPCVD when depositing a SiO2 film, and realizes high-quality wafer coating.

The utility model relates to the technical field of engine exhaust pipe, and disclose a gasket structure for engine exhaust pipe, including the gasket main part, the outer periphery edge of gasket main part and the inner circle of mounting hole are provided with first binding and second binding respectively, and the inner wall of the center hole of gasket main part has the combined sealing rib that butts with the exhaust pipe or cylinder cover gas mouth end face. The utility model discloses through first binding, second binding and the gasket main part edge of wrapping and the inner circle of mounting hole, cooperate the combined sealing rib of center hole, form multiple sealing barriers, utilize stainless steel binding and closely combine exhaust pipe and cylinder cover connecting surface, fill up tiny gap, and the combined sealing rib is further compacted sealing surface through elastic deformation, effectively reduces high temperature gas leakage rate, solves the core problem of insufficient sealing performance.

This utility model relates to a wellhead double-seal packer, belonging to the technical field of oil extraction equipment. It includes a packing box, lower sealing packing, an elastic compensation ring, a lower packing gland, an upper sealing packing, and an upper packing gland. The elastic compensation ring comprises an upper compensation ring and a lower compensation ring with conical pressing surfaces. Multiple guide posts are evenly distributed at the bottom of the upper compensation ring, and compensation rubber sleeves are fitted onto the guide posts. The upper and lower connecting flange rings are connected by locking bolts. This utility model, with its double-seal packing and elastic compensation ring, automatically compensates for gaps after wear, improving sealing reliability and reducing leakage rate by over 90%. The compensation spring and rubber sleeve work together to adapt to vibration and pressure changes under different well conditions. The guide posts, stepped holes, and limiting nut structure of the elastic compensation ring provide radial constraint and axial compensation movement space for the compensation ring, ensuring that the compensation force always acts axially on the sealing packing, avoiding force dispersion or uneven loading due to vibration.

The utility model belongs to the technical field of boiler slag discharge pipe sealing, specifically disclose multilayer sealing anti -leakage mechanism of circulating fluidized bed boiler slag discharge pipe, including slag discharge pipe, the bottom of slag discharge pipe is equipped with the cold slag ware interface hopper, is equipped with the sealing assembly between slag discharge pipe and the cold slag ware interface hopper, the sealing assembly includes the connecting seat, the connecting seat cover is established in the outer wall of slag discharge pipe, the bottom end fixed connection of connecting seat has the metal corrugated section, the top end fixed connection of cold slag ware interface hopper has the connecting plate, and the metal corrugated section is in abutment with the connecting plate, is equipped with fixed assembly between connecting seat and connecting plate, the utility model discloses the setting of sealing assembly, avoid the increase of sealing surface gap due to the pre -tightening force attenuation, and the metal corrugated section absorbs displacement through compression or elongation elastic deformation, avoid the rigid connection fixed screw rod to bear overload tension, and the connecting plate and the connecting seat sealing surface tear, prevent the pipeline from the structural damage such as bending, cracking and so on because of thermal stress concentration, and then reduce the probability of leakage.

This invention relates to a multi-point acquisition battery cover structure, comprising a battery cover, terminals, and enameled wires. The battery cover has two cylindrical flange structures, each with a cylindrical through-hole. Symmetrical structures are designed at both ends of the cylindrical through-holes. Each symmetrical structure includes trapezoidal grooves at both ends of the cylindrical through-holes, a circular groove along the waistline of the trapezoidal groove, and a groove at the outermost edge of the trapezoidal groove for installing guide plates. The symmetrical structure enhances the battery cover's ability to withstand pressure differences between internal and external surfaces. The guide plates have multiple circular holes, with each enameled wire passing through one of these holes. The battery cover flange structure is sealed by injecting structural adhesive into the inner cavity of the flange structure.

The utility model discloses a kind of vacuum glue injection equipment of integrated ultra-low leakage rate and quick sealing function, comprising: equipment frame, the positioning table for positioning and placing product is equipped on the equipment frame upper end, vacuum glue injection cover is movably lifted by limiting guide rod and is equipped on the outside of positioning table, glue injection shaft, glue injection plate rotation is driven by gear transmission by servo motor, cooperate equidistant glue injection head, realize 360 ° rotation glue injection. Compared with traditional fixed glue injection head, it can be flexibly adapted to the multi-angle glue injection needs of complex products, solve the single problem of glue injection path, ensure that colloid is evenly distributed, effectively improve product yield. Vacuum pump, pneumatic butterfly valve and vacuum pressure sensor constitute intelligent system. Sensor real-time monitoring pressure in vacuum glue injection cover, feedback to control system, automatically adjust butterfly valve opening degree and pump operation, change the instability of manual adjustment, ensure that vacuum degree is stable during vacuum glue injection process, reduce bubble generation, improve product quality.

The utility model relates to fluid pump valve technical field, and disclose a kind of leakage-proof fluid pump valve parts, including flange plate body, the surface of flange plate body is equipped with compression device, compression device includes sealing sleeve ring, sealing sleeve ring is slidably connected with the surface of flange plate body, the surface of sealing sleeve ring is slidably connected with compression plate, the both sides of compression plate are fixedly connected with short rod, the arc surface of two short rods is slidably connected with push plate, fixed rod is slidably inserted in push plate, one end of fixed rod is fixedly connected with round plate, the arc surface of flange plate body is equipped with two fixed slots, the arc surface of fixed rod is covered with spring, the both ends of spring are fixedly connected with round plate and push plate respectively, the arc surface of short rod is rotatably connected with rotary ring.This kind of leakage-proof fluid pump valve parts, avoid the gap in flange plate body, cause fluid to leak, thereby leading to the situation that the efficiency of fluid pump is reduced.

This invention relates to a sophorolipid-modified recycled aggregate, phase change concrete, and their preparation method, belonging to the field of building materials technology. The preparation method of the sophorolipid-modified recycled aggregate includes: immersing the recycled aggregate in an oxalic acid solution and rinsing it, then immersing it in an acetic acid solution and rinsing to obtain oxalic acid-modified recycled aggregate; mixing and stirring it with a sophorolipid solution to obtain recycled aggregate adsorbed with sophorolipids; preheating the sophorolipid-adsorbed recycled aggregate and mixing it with liquid paraffin, vacuum impregnating it to remove free paraffin, and cooling to obtain the sophorolipid-modified recycled aggregate. The oxalic acid solution can peel off the old mortar from the surface of the recycled aggregate, exposing the hydrophilic sites of hydroxyl groups; sophorolipids connect the hydroxyl groups of the aggregate and the alkane chains of the paraffin; the vacuum impregnation method increases the paraffin loading and reduces the paraffin leakage rate. This solves the technical bottlenecks of numerous surface defects in recycled aggregates, incompatibility between paraffin and aggregate interfaces, and the difficulty in simultaneously achieving the mechanical properties and phase change properties of concrete.

This utility model discloses a drive and feeding structure for use inside a spraying equipment, comprising: a drive system: a servo motor output end equipped with a pinion gear meshing with a planetary gear assembly; the planetary gear assembly includes two planetary gears mounted on a planetary carrier via pins, a gear ring meshing with the planetary gears, and a square keyway in the inner hole of the planetary carrier; a transmission system: one end of a transmission shaft is press-fitted to the keyway of the planetary carrier via a milled flat end, and the other end is equipped with a cam; a ball bearing is press-fitted onto the cam and mates with the inner hole of a connecting rod; the connecting rod has a ball-pin structure, and its U-shaped open end is connected to a plunger via a fixing pin and a retaining ring; and a pump system. This utility model adopts a planetary gear transmission structure combining a planetary carrier, double planetary gears, and an internal gear ring to achieve high torque output, smoother movement, and reduced pressure fluctuations.

The utility model relates to the technical field of chemical equipment, in particular to continuous production equipment, which comprises first-stage tar kettle residue drying and cracking equipment, second-stage tar kettle residue drying and cracking equipment, third-stage tar kettle residue drying and cracking equipment, third-stage tar kettle residue drying and cracking equipment, fourth-stage tar kettle residue drying and cracking equipment and fourth-stage tar kettle residue drying and cracking equipment, an arc-shaped scraper is fixed on the outer wall of the stirring shaft; the conveying barrel and the first outer barrel are integrally communicated, the other end of the conveying barrel is perpendicularly communicated with the discharging barrel, the sight glass is arranged at the top of the discharging barrel, the conveying rod is installed in the shaft seat in a shaft seal mode, and the sealing performance of the device is guaranteed. The arc-shaped scrapers spirally arranged on the stirring shaft of the equipment form plug flow, backmixing and wall sticking of materials are avoided, stirring is more uniform, the heat transfer efficiency is remarkably improved, discharging is smoother through the matched design of the conical necking opening of the conveying barrel and the vertical discharging barrel, the solid discharging rate can be increased, the liquid residual rate can be reduced, meanwhile, material conveying is more convenient, and the service life of the equipment is prolonged. The blockage cannot easily occur.

This utility model relates to the field of hydraulic transmission equipment technology, specifically to a composite dual-turbine hydraulic torque converter, comprising a dual-turbine hydraulic torque converter body, an input shaft disposed at the input end of the dual-turbine hydraulic torque converter body, and an output shaft disposed at the output end of the dual-turbine hydraulic torque converter body. Both the input and output shafts are fitted with sealing sleeves, which are detachably mounted on the dual-turbine hydraulic torque converter body. A rigid clamping ring is disposed inside the sealing sleeve and fitted onto the corresponding shaft. An inner sealing ring is disposed between the rigid clamping ring and the front cylindrical body of the sealing sleeve. An inner bushing is disposed on the rear side of the rigid clamping ring. Inner fitting gaskets are disposed on both the inner and outer end faces of the inner bushing. The inner fitting gasket on the inner side fits onto the corresponding shaft, and the inner fitting gasket on the outer end face abuts against the rear side of the rigid clamping ring. This utility model has good sealing performance, achieving the effect of improving sealing reliability and ensuring stable equipment operation.

This application discloses an electronic atomizing device, an atomizer, and its atomizing core. The atomizing core includes: an outer tube with a first liquid inlet; a middle tube, sleeved inside the outer tube and spaced apart from it, with a first gap between the middle tube and the outer tube, and a second liquid inlet; and an atomizing component, sleeved inside the middle tube and spaced apart from it, with a second gap between the outer wall of the atomizing component and the middle tube. Both the first and second gaps constitute spaces for storing aerosol matrix. The first liquid inlet connects to the first gap, and the second liquid inlet connects to both the first and second gaps, supplying liquid to the atomizing component from the aerosol matrix stored in the second gap. Through this method, the atomizing core provided by this application can reduce the risk of leakage from the atomizing component due to liquid fluctuations and significant changes in air-fuel pressure.

The application provides a kind of intelligent water management method, device and terminal equipment, applicable to data processing technical field, the method comprises: to water affair pipe network operation monitoring information is classified and processed, obtains pipe network area water affair operation demand information;Intelligent sensing device state information is analyzed and processed to obtain intelligent sensing device communication state analysis information;According to pipe network area water affair operation demand information, intelligent sensing device communication state analysis information, user water consumption behavior information and preset water affair management scheduling resource information, obtain initial water affair management information;Initial water affair management information is optimized and processed to obtain target water affair management information, to carry out intelligent water scheduling management according to target water affair management information by water affair management equipment.The application realizes the intelligentization, precision control of water scheduling management, effectively improves the operation efficiency of water system, reduces pipe network fault risk, and protects the reasonable allocation and efficient use of water resources.

The utility model relates to the field of panel door, especially a double-panel fluorine-lined panel door with sealing air, which comprises a main body mechanism, an anticorrosion mechanism arranged around the main body mechanism, a guide mechanism arranged inside the main body mechanism, a transmission mechanism arranged at the upper end of the main body mechanism, and a sealing mechanism arranged at the upper end of the main body mechanism. The utility model prolongs the service life of the anticorrosion mechanism and the sealing mechanism extension device, solves the problem that the existing device adopts a single anticorrosion measure of corrosion-resistant metal material, which is expensive and may cause great economic loss due to the expansion of point corrosion to large-area corrosion perforation of duplex stainless steel or high-nickel-based alloy material over time.

This utility model discloses a pump head designed to improve the sealing performance of a piston. It includes a body with a chamber, one end of which is connected to a liquid inlet tube communicating with the chamber. A piston and a locking cap are located within the chamber. The locking cap is positioned on the side of the piston furthest from the liquid inlet tube, and a hollow first pump rod passes through it. The piston has a first lip and a first annular protrusion at its end near the locking cap, and a second lip at its end furthest from the locking cap. The first pump rod is fitted onto the first annular protrusion. Both the first and second lips contact the inner wall of the chamber to achieve a seal, forming a first annular groove between the first lip and the first annular protrusion. The outer wall of the first pump rod has a first annular flange located within the chamber, between the piston and the locking cap. A first spring is fitted onto the first pump rod, with one end contacting the first annular flange and the other end embedded in the first annular groove. This invention belongs to the technical field of spray equipment.

The utility model discloses a dispersing kettle for water-based ink production relates to water-based ink production technical field, the utility model discloses a batching bin and stirring part are equipped with feed inlet on the upper side of batching bin, are equipped with the batching assembly corresponding with feed inlet in, one side is equipped with the discharge gate no.

The utility model discloses a kind of open type pump sealing structure of thermal power plant, belong to the technical field of handover shaft protection, including open type pump shell, mechanical seal assembly and packing assembly, the middle part of open type pump shell is connected with pump shaft by inserting, the outside of pump shaft is equipped with mechanical seal assembly and packing assembly, mechanical seal assembly includes dynamic ring, static ring and elastic element.The beneficial effects of the utility model are: by increasing mechanical seal assembly on the basis of open type pump packing seal, and packing assembly is set to the outside of mechanical seal assembly, mechanical seal assembly can be protected using packing assembly, prevent solid particles from entering the inside of mechanical seal assembly to cause damage, and then the service life of the entire open type pump sealing structure is extended, simultaneously, by the mode of double sealing of mechanical seal assembly and packing assembly, improve the sealing reliability, effectively prevent the problem that open type pump leaks.

The utility model relates to a kind of stainless steel roots vacuum pumps, including stainless steel pump body, the front and rear of stainless steel pump body are equipped with first cooling water spacer sleeve, first cooling water spacer sleeve is respectively equipped in front end cover and rear end cover, cooling water spacer cavity is formed between the front and rear end cover of front end cover, between the front and rear end cover of rear end cover;Second cooling water spacer sleeve is equipped in stainless steel pump body, cooling water spacer cavity is formed between stainless steel rotor and stainless steel pump body;Two groups of end cap dynamic sealing components are equipped in front end cover, two groups of end cap dynamic sealing components are equipped in rear end cover;The out shaft end of main shaft is provided with out shaft end mechanical sealing component.The utility model uses stainless steel welded pump body to replace traditional cast pump body, combined with composite sealing system and integrated cooling structure, significantly improve corrosion resistance, sealing reliability and temperature rise control ability, suitable for suction delivery corrosive, high temperature and contain dust gas, manufacturing cost is reduced, service life is extended.

This utility model relates to the field of submerged arc furnace technology, specifically a dust collection device for fixed-point casting in front of a metallurgical submerged arc furnace. It includes an enclosed fume hood, a semi-enclosed fume hood connected to one side of the enclosed fume hood, support legs connected to the four lower corners of the semi-enclosed fume hood, and rotating side protection mechanisms symmetrically arranged on both sides of the semi-enclosed fume hood. The rotating side protection mechanism includes two mounting brackets spaced apart on one side of the semi-enclosed fume hood, hydraulic cylinders hinged to the mounting brackets, rotating side protection plates hinged to the piston rods of the two hydraulic cylinders, and a rotating mechanism connected to one end of the rotating side protection plates and between the corresponding two support legs. This device seals the bottom of both sides of the fume hood, reducing flue gas leakage, enhancing dust collection, controlling the concentration of dust during operation, and protecting health and the environment. The symmetrical rotating side protection mechanism prevents molten iron from splashing, preventing burns, eliminating hidden dangers, reducing accidents, ensuring safe production, and solving two major problems of traditional fume hoods.

This invention proposes a gallium nitride-based semiconductor laser with a gradient peak rate electric field waveguide layer. The fitting curves of the In ion intensity distribution or In atom concentration distribution, the fitting curve of the peak rate electric field distribution, and the fitting curve of the saturated electron drift velocity distribution obtained from SIMS testing of the upper and lower waveguide layers with the gradient peak rate electric field all satisfy any one of the Logistic function, Logistic 5 function, or Nelder function, forming a high electric field barrier. Electrons transporting from the active region to the p-type layer must overcome this barrier height, suppressing electron leakage from the active region to the p-type layer. The low electric field matches the low-velocity transport of holes, avoiding enhanced hole scattering. High injection efficiency allows carriers in the active region to quickly reach the stimulated emission threshold. The saturated electron drift velocity gradually decreases from high to low, and the low saturated electron drift velocity on the active region side avoids punch-through leakage caused by high-speed electrons rushing through the active region.

The utility model discloses a bipolarity battery, bipolarity battery liquid injection structure, battery package and electrical equipment, the bipolarity battery includes: a plurality of pole pieces and sealing rubber ring, a plurality of pole pieces along the first direction stack setting, be equipped with between any adjacent pole piece sealing rubber ring, sealing rubber ring is formed into closed loop and is limited between adjacent pole piece electrolyte cavity, every pole piece and corresponding sealing rubber ring fixed to make sealing rubber ring form heat pressure mark. Therefore, through adopting the sealing rubber ring of closed loop to the sealing of electrolyte cavity can guarantee the sealing performance of electrolyte cavity, is favorable to reducing the probability of bipolarity battery liquid leakage, has improved the reliability of bipolarity battery.

The present application relates to a kind of inner cover automatic press-in device, including rack, press machine guide mechanism, positioning mechanism, clamping mechanism and inner cover feeding mechanism, press machine guide mechanism is installed on rack, positioning mechanism is installed on press machine guide mechanism, clamping mechanism is installed on the side of press machine guide mechanism, and inner cover feeding mechanism is installed on the other side of press machine guide mechanism;Positioning mechanism has locating block and positioning cylinder, clamping mechanism includes clamping block and clamping cylinder, and locating block and clamping block have clamping face;Inner cover feeding mechanism includes inner cover feeding assembly and inner cover feeding assembly, and inner cover feeding assembly includes feeding drive cylinder, feeding bottom push plate and inner cover feeding barrel, feeding drive cylinder drives feeding bottom push plate to drive feeding bottom push plate to push the inner cover located in the lowermost end of inner cover feeding barrel to the upper of box body movement, then through press machine guide mechanism, inner cover is pressed with box body.The inner cover automatic press-in device structure is ingenious, and the sealing between inner cover and box body or bottle body can be effectively guaranteed.

The utility model relates to a kind of refrigerant double-metering valve with shockproof effect, belong to refrigerant double-metering valve technical field.The refrigerant double-metering valve with shockproof effect, comprising: valve body and the shockproof connector of three in number;The shockproof connector includes the threaded joint fixedly connected in valve body interface, the surface of the threaded joint is fixedly connected with positioning sleeve;Shockproof connector is extruded inside seal ring cover and outside seal ring cover by threaded seal cover, so that T-shaped air bag is compressed to generate rebound force, reversely promote two seal ring cover tightly against threaded seal cover;This mechanism uses the elastic potential energy of air bag to simultaneously enhance the friction resistance between threaded joint and threaded seal cover, effectively suppresses the risk of threaded loosening caused by compressor vibration;At the same time, the radial expansion of double seal ring cover fills the thread gap, forms physical sealing barrier, significantly reduces the probability of refrigerant leakage along threaded connection, improves system safety.

This application provides a container cap and a skincare kit. The container cap includes a main body, a sealing element, a contact part, and a cover part. The main body has an inlet, an outlet, and a flow channel. The sealing element is flexible and has an opening structure. The sealing element is placed on the main body and covers the outlet. The contact part includes a shell and a ball bearing. The shell covers the main body, and the ball bearing is placed on the sealing element. The cover part has a closed state and an open state. In the closed state, the cover part covers the main body and abuts against the ball bearing, so that the ball bearing contacts the sealing element, and the outlet is sealed. In the open state, the cover part is detached from the main body, and the opening structure connects the outlet to the outside. The sealing element in this invention can reduce the probability of leakage from the container cap.