68results about How to "Reduce damage speed" patented technology

The invention discloses a method for prolonging Flash abrasion life, a control device and a storage system. The method includes the steps that the original error rates RBER and the correction error rates CBE of different Blocks / Pages on all Flash chips are collected; when the RBER is increased to a certain degree, the optimal reading level threshold values of the corresponding Blocks / Pages are calculated and written in the corresponding Flash chips; the vacant Blocks / Pages are classified according to the CBE, the Blocks / Pages with the low CBE are distributed to data with high update frequency,and the Blocks / Pages with high CBE are distributed to data with low update frequency. On one hand, by adjusting the reading level threshold values, the RBER is reduced, on the other hand, the damagespeeds of the blocks can be reduced through the update characteristics of matched data and Endurance abrasion of Flash, and the abrasion life of the Flash is prolonged. The method, the control deviceand the storage system can be applied to multiple fields such as solid state disks, disk arrays, solid state caches, distributed storage systems and big data application, and have wide application prospects.

A method for adjusting loop wheel machine centre of gravity to decrease phenomenon of track being bitted by wheel includes using í SOLID WORKS íÀsoftware to set up model for body of loop wheel machine for calculating out centre of gravity on irregular loop wheel machine body to confirm adjustment amount and direction for centre of gravity body of loop wheel machine , improving structure of loop wheel machine according to calculating result to let pullback thrust action line overpass centre of gravity on body of loop wheel machine .

The invention discloses a window blocking material used for a high silicon alloy smelting electric furnace, and relates to the field of chemical materials. The window blocking material comprises, by weight percent, 10 to 30% of a solid-state inorganic binder, 40 to 60% of a carbon material and 10 to 30% of a liquid-state organic binding agent. The window blocking material can effectively avoid the pollution to the high silicon alloy, it is ensured that the redox reaction of anhydrous steam and the carbon material causes the furnace window carbon brick erosion, and in the use process, the furnace window is repaired, so that the furnace window carbon brick damage speed is effectively reduced; the maintaining period of the furnace window is prolonged to 28 to 42 days, and the furnace window repair cost is reduced; the furnace window replacing frequency is reduced, the coil base yield and the product quality are improved, and the economic benefit is improved; and the window blocking material can be used in cooperation with a high silicon alloy smelting electric furnace window opening and blocking machine, the automation level is improved, operation is easy, and labor force and time are reduced.

The invention relates to the field of machining, in particular to a method for machining automobile spare parts. The method includes the following steps that first, an automobile spare part machining device is prepared; second, a part is installed and a sleeve is shifted to move; third, butting rods make contact with the oblique plane of a conical table and further abut against the conical table, and a holding clamp clamps the automobile spare part; fourth, a motor is started, and the inner wall of the automobile spare part is polished in the automobile spare part rotating process; and fifth, after the automobile spare part is polished, the sleeve is shifted so that the butting pipes can be disengaged from the conical table, a clamping pipe stops rotating after losing a power source, and meanwhile the holding clamp loosens the automobile spare part and then lays down the automobile spare part; and when the next automobile spare part is machined, the sleeve is shifted to make the conical table abut against the free ends of the butting rods, and the clamping pipe can be made in a rotating state. According to the technical scheme, the tubular automobile spare parts can be collected and laid down without shutdown of the motor, and the damage speed of the motor is reduced; and meanwhile the fixing effect on the tubular automobile spare parts is good, clamping is stable and machining precision of the tubular automobile spare parts is improved.

The invention discloses a polyester waste silk recycling and purifying device and relates to the related technical field of polyester waste silk recovery. The device comprises a cutting-off bin and awashing bin, a feeding hopper is fixedly connected to the top end of the cutting-off bin, a discharging pipe is fixedly connected to the bottom end of the cutting-off bin, a cutting-off shaft is arranged in the middle of the cutting-off bin, one end of the cutting-off shaft is movably connected with the cutting-off bin, the other end of the cutting-off shaft penetrates through the cutting-off binand is fixedly connected with a first servo motor, and the cutting-off shaft is circumferentially and fixedly connected with a cutting-off knife. The invention further discloses a polyester waste silkrecycling and purifying process. The process comprises the following steps of A, cutting, B, washing, C, water circulation, D, stirring, E, dehydration, F, aggregation and G, inspection. The dampingmechanism is arranged at the bottom of the cutting-off bin, the buffering effect is achieved, the vibration problem of the cutting-off bin is solved, the efficient washing effect is achieved through the arrangement of the fixing shaft, the machining efficiency is improved, the equipment requirement is low, and the machining cost is low.

The invention discloses a construction method for a fireproof material of a throat part of a grate cooler. The construction method is characterized by comprising the following steps of steel structure installing, anchoring part installing, calcium silicate board installing, new and old castable interface processing, formwork and expansion joint reserving, pouring and formwork demounting and maintaining. The construction method has the beneficial effects that the service life of the throat part of the grate cooler is prolonged through the fireproof material of the throat part of the grate cooler and changing of the structure of the throat part of the grate cooler, and the damaging speed is reduced. Meanwhile, the method is simple in technology and small in engineering amount.

The invention relates to a modified asphalt and provides the modified asphalt with high viscosity and high elasticity, in order to solve the problem of reduction of durability of pavement. According to the technical scheme, the modified asphalt with high viscosity and high elasticity contains the following components in parts by weight: 100 parts of asphalt, 10-15 parts of butadiene styrene rubber, 20-40 parts of volcano fiber, 0.5-1.5 parts of cross-linking agent and 5-10 parts of oil. 'Structural asphalt' is formed by adding the volcano fiber; the volcano fiber has excellent heat-insulatingeffect and physical properties, so that viscosity and heat insulation of the modified asphalt are promoted; the modified asphalt is reinforced, so that the asphalt layer is difficult to crack and deform and the service life of the modified asphalt is prolonged.

The invention discloses a big data visualization-based intelligent monitoring method for a power transformation and distribution station and a cloud monitoring platform, and the method comprises the steps of: carrying out the position numbering of each transformer cabinet in an indoor power transformation and distribution station, acquiring the oil level of a transformer in each transformer cabinet, and comparing and analyzing whether the transformer in each transformer cabinet needs to be refueled or not, informing a worker to perform refueling processing on the transformer needing refueling, at the same time detecting the transformer oil temperature in each transformer cabinet and each quality index numerical value of a transformer oil sample, and performing comparison to obtain the transformer oil temperature difference value in each transformer cabinet and the difference value of each quality index numerical value of the transformer oil sample, detecting the operation sound decibel of each transformer cabinet, calculating the comprehensive operation safety influence coefficient of each transformer cabinet, performing comparison with a set operation safety influence coefficient threshold value, and screening the position number of each transformer cabinet in a dangerous operation state and performing display, thus improving the operation safety and reliability of the transformer cabinet in the indoor power transformation and distribution station.

The invention discloses a connecting device for transmitting power. The connecting device comprises a motor assembly, a hydraulic transmission assembly, and a connecting assembly arranged between themotor assembly and the hydraulic transmission assembly. The connecting assembly comprises a power transmission shaft, a power connection disc and a torque converter which are sequentially arranged. Alarge end plate of the power transmission shaft is connected with the power output end of the motor assembly through an output flange, and the tip of the small end of the power transmission shaft is fixedly connected with the power connection disc through a connecting piece. The connecting assembly arranged between the motor assembly and the hydraulic transmission assembly is compact in structureand reasonable in layout, all parts of the connecting assembly are easy to manufacture and low in machining cost, mounting and dismounting are convenient, the reliability requirements of radial and axial connection when the motor assembly and the hydraulic transmission assembly realize power transmitting through the connecting assembly are met, and the power transmitting effect is good.

An embodiment of the invention discloses a current regulation method and system, a pre-driver module and a programmable logic gate array. The current regulation method comprises the steps of detecting current values of LEDs driven by the pre-driver module through a pre-driver module, transmitting the detected current value of each LED to the programmable logic gate array, enabling the programmable logic gate array to adjust the drive current values output by the pre-driver module according to the detected current value of each LED and threshold values, and then combining the adjusted drive current values transmitted by the programmable logic gate array with the adjusted drive current values output by at least two driven LEDs. Therefore, when a certain LED is damaged, the pre-driver module can adjust the output drive current values to prevent good LED lamps from being used in an overload mode and further the LED damage speed is reduced.

The invention discloses a stirring device for grinding wheel production. The stirring device comprises a stirring box body, a handle, a box cover, a rotating shaft, a transmission shaft, a bearing block, a motor, a support table, a first base, a press plate, a hydraulic cylinder, a rotating plate, a fixing plate and a second base. The product is convenient to operate, during grinding wheel production, whether the stirring box body is sealed can be controlled by controlling the hydraulic cylinder, then, the motor is started to drive the stirring box body to rotate, raw materials in the stirring box body are stirred, the raw materials are more thoroughly stirred due to rotation of the stirring box body, the stirring effect is better, the stirring speed is higher, time is saved, the stirring efficiency is improved, during rotation of the stirring box body, a damping device can absorb and consume vibration energy, so that the whole device runs more stably, the acting force between the second base and the ground is buffered, the ground damage speed is delayed, and the service life of the second base is prolonged.

The invention relates to the technical field of daily products, in particular to a summer sleeping mat wiping device suitable for a family. The summer sleeping mat wiping device suitable for the family needs to solve the technical problem that lots of time and physical power are wasted when a sleeping mat is wiped. In order to solve the technical problem, the summer sleeping mat wiping device suitable for the family is provided and comprises a shell in which a kinetic energy transmitting device, a friction cleaning device, a water outflow device and a water receiving device are arranged; and awiping unit is arranged at the bottom of the shell. According to the summer sleeping mat wiping device suitable for the family, in the reverse rotating process of a large rotating wheel, a summer sleeping mat can be wiped many times, one time wiping performed on the summer sleeping mat is equivalent to many-time wiping performed on the summer sleeping mat, and the efficiency of wiping the summersleeping mat is improved; and it is guaranteed that in the wiping process, a sponge ball cannot be dry, the wiping effect of the sponge ball on the summer sleeping mat is netter; and after wiping, a sponge mat is used for absorbing water, it can be avoided that too much water exists on the summer sleeping mat, and the service life of the summer sleeping mat is prolonged.

The invention relates to a dust removing system for smelting waste gas. The dust removing system is characterized in that a dust collecting chamber is communicated with an exhaust manifold through a dust collecting and exhaust pipe, a water inlet pipe is communicated with a main water pipe in the dust collecting chamber, one ends of a group of branch water pipes are communicated with the main water pipe, the other ends of the branch water pipes are sealed, and a group of water spraying nozzles is mounted on each branch water pipe; a group of radiating buckets is arranged on the top plate of the dust collecting chamber, every two adjacent radiating buckets are communicated through a radiating pipe, a connecting gas pipe is arranged on the leftmost radiating bucket, and a gas inlet manifold is arranged on the rightmost radiating bucket; a group of filtering chambers is mounted on the top plate of the dust collecting chamber, each filtering chamber is communicated with the exhaust manifold through a branch exhaust pipe, a gas inlet chamber is arranged on the lower portion of each filtering chamber, and each gas inlet chamber is communicated with the connecting gas pipe through a branch gas inlet pipe; the lower end of each radiating bucket is communicated with the dust collecting chamber through a dust discharge pipe, and the lower end of each gas inlet chamber is communicated with the dust collecting chamber through a dust discharge pipe; one end of a shaft extends into each dust discharge pipe, a dust discharge pipe gate is welded to the shaft part in each dust discharge pipe, a shaft arm is connected to the shaft part outside each dust discharge pipe, and a weight block is hung on each shaft arm.

The invention provides an environment-friendly reliable type pump for a water treatment system. The environment-friendly reliable type pump comprises a rotor part, wherein a first through hole is formed in the upper end cover of the rotor part; a cooling tube which extends along length of a protective tube is arranged in the protective tube; a second through hole is formed in a guide shell; a third through hole is formed in a lower bearing base; a ring of ring-shaped slots is formed in the inner side surface of the lower bearing base; a fourth through hole is formed in a lower bearing; the first through hole, the cooling tube, the second through hole, the third through hole, the ring-shaped slots and the fourth through hole are in communication in sequence; the guide shell, the protectivetube, the upper end cover and the inner part of a sealing cover are in communication; a fifth through hole which communicates with the inner part of the sealing cover is formed in the sealing cover; alubricating / cooling / flushing cavity capable of circulating liquid independently is formed, so that the pump has effects of independently isolating, lubricating, flushing and cooling, and different media can be pumped, and therefore, the environment-friendly reliable type pump is safe, clean, multi-purpose, energy-saving and long in service life; moreover, the water pump is a structure capable ofdrawing a core, and facilitates mounting and dismounting; and a pump mounting plate is arranged outside a water outlet section in a sleeving mode, and a mounting position of the motor bracket is arranged on the water outlet section, so that length of a pump shaft is effectively reduced.

The invention discloses a power cabinet convenient to internal device maintenance. The power cabinet comprises a waterproof pedestal, the waterproof pedestal is provided with a power cabinet main body, the power cabinet main body is internally provided with a control groove, and the inner top wall of the control groove is fixedly provided with a top plate. By pulling a handle, a first roller rollsin a moving groove, a second roller rolls in a sliding groove, and a equipment mounting plate is pulled out of the control groove through cooperation of the first roller and the second roller, so that workers are prevented from being shielded by the power cabinet main body when maintaining electrical equipment; The invention solves the problem that when an existing power cabinet is used, a workerneeds to stretch an arm into a control groove for maintenance, great convenience is brought to maintenance of the worker, flowing air generated by rotation of a fan enters the control groove throughan air net, the air flowing speed in the control groove is increased, and a large amount of heat generated when the electrical equipment works for a long time is discharged from the heat dissipation opening, so that heat dissipation of the control groove is realized, and the situation that the electrical equipment is damaged due to high temperature caused by untimely heat dissipation is effectively avoided.

The invention provides a control method and device for an SOFC system, and an FCU. The method comprises steps of obtaining the mass flow of fuel according to a current target value needed by an SOFC stack and a molar ratio determined based on detected natural gas fuel components; obtaining water mass flow based on the fuel mass flow and the water-carbon ratio meeting the reforming requirement; controlling the opening degree of a second control valve according to the fuel mass flow, and controlling the opening degree of a third control valve according to the water mass flow; and detecting the temperature of the SOFC stack in real time, and controlling the opening degree of the first control valve according to the temperature of the SOFC stack. The method is advantaged in that natural gas fuel components are detected, and the molar ratio of the natural gas fuel components is determined, required fuel mass flow and water mass flow are calculated according to the molar ratio of the naturalgas fuel components, the current target value and the water-carbon ratio so that opening degrees of the control valves of the fuel and the deionized water are conveniently controlled, the opening degree of the control valve corresponding to air is controlled according to the temperature of the SOFC stack, the damage speed of an SOFC system is reduced, and the conversion rate of natural gas fuel can be increased.

The invention discloses a Y-shaped frame sealing ring convenient to replace. The Y-shaped frame sealing ring (2) is an improvement of a Y-shaped frame-free sealing ring. A sectional structure of one end of the Y-shaped frame-free sealing ring is a square flat end while a sectional structure of the other end of the same is provided with two sealing supports connected by two semi-circles, a T-shaped steel ring (2.1) is arranged inside the square flat end, the diameter of the big end of the T-shaped steel ring is larger than that of the small end of the T-shaped steel ring, an inner thread (2.1.1) is arranged in an inner hole of the small end, an outer end face of the small end is aligned with the square flat end, both the big and the small end are embedded in the square flat end, the big end is arranged reversely to the two sealing supports, and both the big end and the small end are provided with a same symmetrical central line which is in superposition with a central line of the two sealing supports. Via the inner thread, a damaged Y-shaped frame sealing ring can be easily pulled out from a hydraulic oil cylinder, so that replacing time is saved, and large waste of manpower and material resources is avoided.

The invention discloses a sun-screening agent for taped hair extensions. The sun-screening agent comprises the following raw materials by weight: 30 to 40 parts of flat apricot kernel oil, 18 to 25 parts of modified fenugreek gum, 7 to 12 parts of butyl methoxydibenzoylmethane, 6 to 10 parts of glycerin, 4 to 6 parts of gamma-polyglutamic acid, 0.2 to 0.3 part of hyaluronic acid, 1 to 2 parts of cactus extract and 1 to 2 parts of the extract of Radix Sophorae flavescentis. The sun-screening agent can improve the sun-screening function of a wig and prolong the service life of the wig.

The invention discloses a pair of cutting prevention gloves. Each glove comprises a glove body, wherein the glove body comprises a finger part and a palm part, the outer surface of the finger part is provided with a cutting prevention layer formed by a fiber outer layer and steel wires, in addition, the steel wires are in vertical arrangement, a rubber layer is arranged on the palm part, and the rubber layer is in a reticular shape. According to the scheme, the cutting prevention layer is arranged on the finger part, the intensity of the finger part of the glove is enhanced, the safety of the finger part is perfectly improved through the fiber outer layer and the steel wires, the hand protection effect is realized, the glove damage speed is also decelerated, and the service life of the glove is prolonged. Through the design of installing the rubber layer on the palm part, the intensity of the palm part of the glove is also enhanced, and the palm cannot be easily injured, so the glove has the wear resistance in high-intensity operation, and the service life of the glove is prolonged.

The invention discloses an asparagus planting soil loosening device. The asparagus planting soil loosening device comprises a device body, a water collecting tank, a mud guard, a soil loosening rake and a soil loosening roller, the mud guard, the soil loosening rake and the soil loosening roller are sequentially arranged on the inner side of the device body, a weed collecting assembly is arranged in the middle of the mud guard, a dust collecting bag is arranged at one end of a guide pipe, a damping column is arranged on one side of the soil loosening rake, and ditching cutters are arranged on the surface of the soil loosening roller. According to the asparagus planting soil loosening device, soil loosening is conducted through the mud guard, the soil loosening rake and the soil loosening roller in sequence through the device body, preliminary soil loosening is conducted through saw teeth at the end of the soil loosening plate, weeds can be collected through the weed collecting assembly in the soil loosening process, follow-up work is facilitated, secondary soil loosening is conducted through the soil loosening rake, through a spring column at the upper end of a connecting column, buffering can be conducted between the soil loosening rake and the device body during operation, tertiary soil loosening is conducted through the soil loosening roller, and the soil loosening effect is better through arrangement of the ditching cutter.

The invention discloses an Internet of Things charging pile which comprises a supporting plate, a protection plate, an inclined table, a charging pile body, an automatic telescopic winding roll and a charging gun, the charging pile body and the charging gun are arranged under the ground through design, children cannot take the charging gun easily, safety accidents are avoided, the charging pile body is hidden under the ground, and the phenomena that the charging pile body is collided, damaged and the like cannot occur; and a charging gun line is completely protected, and the service life of the whole equipment is prolonged. The charging pile is lifted when used, and a sealed space is formed in the supporting plate, so that rainwater cannot enter the charging pile, direct sunlight is avoided, the damage speed of equipment is reduced, the occupied area of a parking lot is reduced, and the situation that normal entering and exiting of the parking lot are affected is avoided. During use, the charging gun is lifted to the ground surface through rotation of the ball screw rod to charge a new energy automobile, the charging gun automatically returns to the ground after charging is completed, payment and recording are conducted through two-dimensional code scanning, and convenience and rapidness are achieved.

The invention discloses a rotating power conversion assembly and a manual profiling type kelp knotting machine, and relates to the technical field of kelp processing equipment. The rotating power conversion assembly includes a machine frame, wherein a sliding ring is arranged on the machine frame; the middle part of a rotating frame is rotatably arranged on the sliding ring; a conical clamp is arranged on the sliding ring through a reciprocating moving assembly; a sleeve is arranged on the outside of the sliding ring, and the two ends of the rotating frame are arranged on the inner wall of thesleeve through runners. The rotating power conversion assembly and the manual profiling type kelp knotting machine have the beneficial effects that the eccentricity of the rotating power conversion assembly is greatly reduced, the whole assembly is more stable, the constant vibration caused by the eccentricity force is reduced, and the damage speed of the whole rotating power conversion assemblyis reduced. Multiple assemblies coordinate with one another to complete the knot of kelp, the whole process is simple and efficient, the knotting rate can reach up to 93%, and the quality of the kelpknot is high, the knotting is reliable, the manual profiling type kelp knotting machine is suitable for the actual processing and production, the application prospect is very broad, and the manual profiling type kelp knotting machine is an ideal and full-automatic manual profiling type kelp knotting machine.

The invention disclose glue dispensing equipment used for production of illumination lamps. The glue dispensing equipment structurally comprises a movable platform, a cleaning structure, a glue dispenser, an operation platform, a glue dispenser body, a starting button, a data interface, a voltage device and a support; the movable platform is fixed on the upper part of the support through screws; and the cleaning structure is fixed on the lower part of the movable platform through rivets; the cleaning structure is provided with a linkage device, a starting device, an ejection device, a water pump device, a heat dissipation device, a chemical device, a transmission device and a shell. The glue dispensing equipment has the beneficial effects that the cleaning structure is arranged, so that glue remaining in the glue dispenser can be cleaned out through the cleaning structure after use of the equipment is finished; a nail polish remover contained in the cleaning structure is mixed with a water source and reacts with the water source, so that glue adhered in the glue dispenser can be rapidly cleaned; cleanness of the equipment is improved; the service life of the glue dispenser is prolonged; and the damage speed of the glue dispenser is lowered.

The invention relates to a spiral conveyor. The spiral conveyor comprises a main machine shell, a spiral body and a power source, the spiral body is arranged in the main machine shell in a rotating mode, one end of the spiral body is connected to the power source, the power source drives the spiral body to rotate, a tail end shell is fixedly arranged at the end, away from the power source, of the main machine shell, the end, close to the main machine shell, of the tail end shell is open and communicates with the interior of the main machine shell, a discharging port is formed in the peripheral side of the tail end shell, a mounting cylinder is fixedly arranged in the tail end shell, a rotating shaft is fixedly arranged at the end, away from the power source, of the spiral body, a mounting cavity is formed in the mounting cylinder, an opening of the mounting cavity faces the spiral body, one part of the rotating shaft is inserted into the mounting cavity, a sealing ring is arranged on the rotating shaft and seals the opening of the mounting cavity, a self-lubricating structure is arranged between the rotating shaft and the mounting cylinder, and the self-lubricating structure is located between the outer circumferential wall of the rotating shaft and the inner circumferential wall of the mounting cavity. The spiral conveyor has the advantages of being capable of achieving the self-lubricating function, better in sealing performance, capable of almost achieving the maintenance-free effect and longer in service life.

The invention discloses a Y-shaped frame sealing ring convenient to replace. The Y-shaped frame sealing ring (2) is an improvement of a Y-shaped frame-free sealing ring. A sectional structure of one end of the Y-shaped frame-free sealing ring is a square flat end while a sectional structure of the other end of the same is provided with two sealing supports connected by two semi-circles, a T-shaped steel ring (2.1) is arranged inside the square flat end, the diameter of the big end of the T-shaped steel ring is larger than that of the small end of the T-shaped steel ring, an inner thread (2.1.1) is arranged in an inner hole of the small end, an outer end face of the small end is aligned with the square flat end, both the big and the small end are embedded in the square flat end, the big end is arranged reversely to the two sealing supports, and both the big end and the small end are provided with a same symmetrical central line which is in superposition with a central line of the two sealing supports. Via the inner thread, a damaged Y-shaped frame sealing ring can be easily pulled out from a hydraulic oil cylinder, so that replacing time is saved, and large waste of manpower and material resources is avoided.

The invention discloses a stamping mould used for automobile parts. The stamping mould comprises an upper mould pressing core and a lower mould, wherein the lower mould further comprises a lower mouldbase, at least four balance blocks and four lifting parts; height of a polyurethane column body is greater than height of a steel sleeve; a left notch slot and a right notch slot are separately formed in the two ends of the lower mould base; at least two guide columns are arranged in each of the left notch slot and the right notch slot; a lower slide plate is arranged on each of the inner side wall, the front side wall and the rear side wall of each of the left notch slot and the right notch slot; a plurality of through holes are uniformly formed in each lower slide plate in a spaced mode, and graphite columns are embedded into the through holes; the two ends of the upper mould are separately equipped with a left convex slide block and a right convex slide block, and slide sleeves which are fitted to the guide columns are arranged in the left convex slide block and the right convex slide block; upper slide plates which are matched with the lower slide plates are arranged on the outerside wall of the left convex slide block and the outer side wall of the right convex slide block; and a plurality of through holes are uniformly formed in each upper slide plate in a spaced mode, andgraphite columns are embedded into the through holes. Integral balance and buffer of the stamping mould is improved, damages, on materials, of vibrations and strong impact force are reduced, balancedstress during contact is kept, and damage speed of the mould is also reduced.

The invention discloses a marine low-vibration low-noise vertical self-priming centrifugal pump which comprises a pump shell. Inner sleeves A are arranged at the two sides of the top of a base, a motor is arranged on the top of the pump shell, a water pumping bin is arranged at the bottom of the pump shell, and a water inlet bin is arranged at the bottom of the water pumping bin; and one side of the water inlet bin is provided with a water inlet filtering assembly which is communicated with the water inlet bin, and the output end of the motor is provided with a motor shaft, a coupler and a pump shaft. According to the marine low-vibration low-noise vertical self-priming centrifugal pump, through mutual cooperation of the water inlet bin, an impeller, the coupler, the motor, a vapor-liquid separator, a flow guide pipe, the water pumping bin, a circulating pipe, the motor shaft and the pump shaft, vapor and liquid are separated through the vapor-liquid separator, internal circulation is changed into external circulation, the backflow trend of the device is changed, backflow liquid is prevented from colliding with inlet liquid, the problems that noise is large and vibration is strong when a transmission pump operates are solved, and operation is more stable compared with a traditional pump.