14results about How to "Eliminate leaks" patented technology

This utility model provides a pressure reducing valve with a quick-install pressure measuring instrument, including a pressure reducing valve body, a locking knob, and a fixed outer frame. The pressure measuring part at the front end of the pressure reducing valve body is embedded with an integrated end face, and an end face block is integrally fixed at the front end of the integrated end face. Locking threaded holes are opened on the upper and lower ends of the left and right sides of the end face block. An annular sealing groove is opened at the front end of the end face block, and a main sealing ring is embedded inside the annular sealing groove. A port tube is installed through the main sealing ring. This design solves the problems of inconvenient installation, risk of torque damage, and difficulty in disassembly and maintenance of existing threaded connection pressure reducing valves with instruments. This utility model adopts an integrated instrument interface structure of "axial quick-install self-sealing and radial locking", completely abandoning the traditional rotary threaded connection method. It uses axial magnetic positioning insertion and radial knob locking, and uses the sealing ring integrated on the valve body to achieve reliable sealing for plug-and-play use.

The invention discloses a motor air tightness testing device, and solves the problem that a test result can be obtained only through multiple times of detection or time increase due to the fact that existing detection equipment is too long in detection time. The motor air tightness testing device comprises an air tightness tester, a motor positioning assembly used for positioning a testing motor, an inflation pipeline assembly connected with the air tightness tester, and a motor outgoing line ventilation assembly communicated with a motor outgoing line of the testing motor. The air inflation pipeline assembly comprises a first air inflation pipeline connected with an air inlet of the test motor and a second air inflation pipeline connected with the motor outgoing line ventilation assembly, and the first air inflation pipeline and the second air inflation pipeline inflate the test motor in the air tightness test process of the test motor.

This utility model proposes a maintenance-free vacuum machine, comprising: a spiral central shaft and a cylinder. The central surface of the spiral central shaft has a spiral structure. The cylinder is installed in conjunction with the spiral central shaft, and the contact surfaces of the two are fitted together to ensure that no lubricating oil enters the cylinder, avoiding problems such as oil carbonization, emulsification, and contamination. There is no need to replace the filter element, add lubricating oil, or stop the machine for maintenance regularly, which greatly reduces the operation and maintenance costs. The outer periphery of the cylinder is provided with a first water-cooling jacket, which is connected to an external cooling device through cooling pipes. It is used to cool the cylinder with circulating water, keeping the operating temperature at 30-40℃, effectively slowing down component aging, extending equipment life, and eliminating the risks of high-temperature burns, lubricating oil leakage, and mechanical jamming, reducing safety hazards for operators. Exhaust gas is discharged directly without oil mist pollution. The water cooling system reduces water waste through closed-loop circulation, which meets the requirements of green manufacturing.

This invention discloses a novel electroplating method for integrated circuits, belonging to the field of semiconductor manufacturing technology. The method includes: Step 1: preparing a wafer and coating a positive photoresist layer on the wafer; Step 2: shielding the edge region of the positive photoresist layer using a shielding ring; Step 3: exposing the positive photoresist layer on the wafer, wherein the edge region is not exposed due to being shielded by the shielding ring; Step 4: developing the exposed positive photoresist layer to form a window structure on the positive photoresist layer on the wafer, while retaining the unexposed positive photoresist layer in the edge region, thereby forming a continuous region without windows in the edge region. This invention can improve the plating defects of positive photoresist at the wafer edge, enhance the quality and yield of bump fabrication and packaging, and can be applied to all bump fabrication and packaging fields.

This invention introduces a gravity-type wharf fixed crane foundation structure and its construction method. The foundation structure includes a small caisson assembly, a riprap foundation, precast blocks, a breast wall, and a top concrete layer. The small caisson assembly is installed on the riprap foundation. Precast blocks are placed on the riprap foundation on both sides of the small caisson assembly, and a breast wall is installed on each precast block. A top concrete layer is poured on top of the small caisson assembly. The small caisson assembly includes multiple small caissons connected by the poured top concrete layer. A bottom concrete layer is provided inside each small caisson, and embedded reinforcing bars are installed within the bottom concrete layer, which is connected to the top concrete layer via the embedded reinforcing bars. Through this design, this application eliminates the problem of grout leakage caused by deformation or displacement of the formwork during concrete pouring in traditional gravity-type block wharf fixed crane foundation construction, leading to poor sealing at the joint between the formwork and the riprap foundation.

The invention relates to the technical field of articulated vehicle steering, aims to solve the problems that an existing hydraulic steering system is high in energy consumption, low in precision, slow in response, insufficient in transverse rigidity, prone to causing vehicle body oscillation and the like, and discloses drive-by-wire electromechanical steering equipment and method for an articulated mining vehicle. The required torque is calculated by the data processing terminal and then is transmitted to the inverter through the CAN bus so as to drive the servo motor; the servo motor drives the enveloping worm through the planetary reduction gear, so that the turbine set is driven, and steering of the rear vehicle body of the hinged type mining vehicle relative to the front vehicle body of the hinged type mining vehicle is achieved. The system has the advantages of energy conservation, high efficiency, accurate response, high stability, fault redundancy capability, simplified structure and low maintenance cost, and the steering performance and reliability of the articulated mining vehicle under severe working conditions are remarkably improved.

The utility model discloses an emulsion explosive metering and adjusting integrated device for charging robot relates to tunnel blasting engineering technical field, servo motor is used as power source, and drive spiral meter runs, and the emulsion base is supplied by pressure pump through emulsion base input end, and after the metering of spiral meter, is transported to the inner tube of concentric inner and outer tube structure, and the sensitizing agent is metered and transported by the precision metering pump through sensitizing agent input end, enters the outer tube annular gap of concentric inner and outer tube structure, obtains emulsion base flow directly, without lag through "screw device rotating speed metering", and the closed loop control strategy of fusion sensitizing agent, adopts capillary hole channel to form water ring, reduces the transportation resistance of emulsion base, promotes the transportation rate, and the response time of system control density regulation is greatly promoted from the number of seconds level of traditional decentralized system to millisecond level.

The application discloses a composite film material for a circuit board process, a preparation method of the composite film material, and a circuit board selective hole plugging method. The composite film material comprises a metal layer, a photosensitive layer arranged on a first surface of the metal layer, and a resin bonding layer arranged on a second surface of the metal layer. The resin bonding layer comprises an alkali-soluble resin and is used for bonding with the circuit board. The application uses the strong support of the metal layer and a specific formula design of the resin bonding layer to ensure that the film material can be cleaned and removed without residues by an alkaline solvent after experiencing an extreme heat process of 150 DEG C to 220 DEG C, and the yield and surface flatness of a selective hole plugging process of a high thickness-diameter ratio circuit board are significantly improved.

The application relates to the field of special glass ceramics and surface modification coating, and discloses a high-stability glass ceramic fluorescent sheet and a preparation method thereof. The fluorescent sheet comprises a glass ceramic substrate and a sunlight control film layer which is combined on the excitation light incident side of the glass ceramic substrate; the glass ceramic substrate is composed of SiO2, Al2O3, Eu2O3, Tb4O7 and the like, and precipitates mixed crystal phases of feldspar and willemite; the sunlight control film layer is composed of Ag, TiO2, SnO2 and SiO2 which are alternately stacked; during preparation, the raw materials are melted and annealed, then nucleation and crystallization are carried out, and then the sunlight control film layer is magnetron sputtering deposited and surface modified. In the application, the inorganic crystal lattice anchoring light emitting center is used to replace the organic dye, photo fading is eliminated, the detection baseline is maintained stable, stray light is intercepted by the integrated film layer, excitation light leakage is eliminated, and the signal-to-noise ratio is improved.

The invention discloses a leakage stopper for coastal steel pipe pile construction and a grounding judgment method thereof, and the leakage stopper comprises a positioning frame which comprises two arc-shaped plates; the fixing assembly is connected with the two arc-shaped plates and used for enabling the two arc-shaped plates to tightly hold or loosen the steel pipe pile; the multiple telescopic devices are arranged on the outer side of the positioning frame at intervals; the sealing cushion layer is annular and is provided with an opening, the top of the sealing cushion layer is connected with the bottom ends of the multiple telescopic devices, and when the two arc-shaped plates tightly hold the steel pipe pile, the end faces of the two sides of the opening of the sealing cushion layer can abut against each other and be attached; the plurality of pressure monitoring devices are respectively arranged between the plurality of telescopic devices and the sealing cushion layer; the lifting device is connected with the positioning frame or the plurality of telescopic devices; the control system is connected with the multiple telescopic devices and the multiple pressure monitoring devices and used for controlling the telescopic ends of the corresponding telescopic devices to stretch out and draw back according to pressure data measured by the pressure monitoring devices. The device can actively adapt to irregular seabed terrains, and dynamic pressure regulating sealing is achieved.

The utility model relates to the field of circular mould granulation machines, in particular to a mould for a small-sized circular mould granulation machine, which comprises a circular mould main body, a plurality of penetrating circular mould holes are uniformly formed in the annular surface of the circular mould main body, and a positioning groove matched with the circular mould granulation machine is formed in the surface of one side of the circular mould main body. A plurality of first threaded holes used for fixing the circular mold body are formed in the surface of the circular mold body, and two sealing grooves used for sealing are formed in the upper side and the lower side of the annular inner side face of the circular mold body correspondingly. Compared with an old-fashioned mold, the manufacturing cost of equipment is reduced, efficiency is high during mounting and dismounting due to mutual cooperation of the first threaded hole and the positioning groove, meanwhile, a gap between the circular mold body and the material stirring disc is eliminated due to cooperation of the sealing groove and the material stirring disc, and the situations of material leakage and dust raising are reduced.

The utility model provides an electric kettle with a replaceable inner container, which comprises a kettle body, an electric kettle cover and an electric kettle cover, the inner container is detachably arranged in the mounting cavity; the kettle cover is hinged to the kettle body so as to cover the opening of the inner container; the flow guide part is arranged on the side, facing the opening of the inner container, of the kettle cover; the flow guide piece is provided with a guide part obliquely extending towards the opening of the inner container, and the extending line of the bottom end of the guide part in the gravity direction intersects with a water collecting face defined by the periphery of the opening of the inner container. By means of the electric kettle, the problem that sanitation and safety of an electric kettle in the prior art are difficult to consider at the same time is solved.

The utility model discloses a large pipe diameter assembling cylinder type cyclone preventer, including cyclone preventer main part and ring type flow guide portion, the upper end of cyclone preventer main part is equipped with the first flange for connecting pipeline, the lower extreme of cyclone preventer main part is equipped with the second flange for connecting ring type flow guide portion, ring type flow guide portion is spliced by multiple arc type flow guide blocks, sets up the flow vane in arc type flow guide block, and the left and right sides of each arc type flow guide block are equipped with splicing part, and the splicing part of arc type flow guide block is equipped with at least two bolt holes, two bolt holes are located arc type flow guide block's inner arc side and outer arc side respectively, and the bolt hole of arc type flow guide block's inner arc side is connected through the bolt hole of splicing part by bolt still with cyclone preventer main part's second flange. The utility model discloses simple structure has solved the cyclone preventer transportation, the difficult installation, the inconvenient maintenance problem.

The application discloses a low-temperature ethylene storage system suitable for total reserves less than or equal to 500 cubic meters, which comprises a low-temperature ethylene storage tank, a variable-frequency ethylene conveying pump, a liquid-phase ethylene distributor and an ice machine set. A high-temperature liquid-phase ethylene outlet is arranged at the bottom of the low-temperature ethylene storage tank and is communicated with a pipeline of the variable-frequency ethylene conveying pump. A discharge port of the variable-frequency ethylene conveying pump is communicated with a feeding port pipeline of the ice machine set. The liquid-phase ethylene distributor is arranged in the top of the low-temperature ethylene storage tank and is communicated with a liquid outlet pipeline of the ice machine set. The device can replace a diaphragm compressor and the ice machine set to realize the same cooling loss effect, effectively reduce production cost, improve production safety and reduce production energy consumption.