73results about How to "Reduce fouling" patented technology

The application discloses a liquid seasoning adding device, which belongs to the field of cooking machines. The liquid seasoning adding device comprises a liquid seasoning storage structure, a pump body structure, a liquid conveying pipeline and a dropping assembly. The liquid conveying pipeline is sequentially connected with the liquid seasoning storage structure and the pump body structure, and the liquid outlet end of the liquid conveying pipeline is connected with the dropping assembly. The dropping assembly is arranged above a frying pot body. The dropping assembly comprises a mounting shell, an interface plate and a rotary driving structure. A through groove is formed in the mounting shell, and the through groove is used for butt joint with an opening of the frying pot body. A seasoning adding opening is arranged on the side surface of the mounting shell, and the interface plate is arranged at the seasoning adding opening. The driving structure drives the interface plate to switch positions between the interface plate being located in the through groove and being located outside the through groove.

The utility model relates to an MT guide pin automatic assembling device which comprises a round vibration material disc, a conveying material channel, a press-fit mechanism and a station rotary disc. The press-fit mechanism comprises a guide pin clamping component and a press-fit pneumatic component. One end of the conveying material channel is connected with the circular vibration material disc, the other end of the conveying material channel is in butt joint with a feeding hole in the guide pin clamping component, and the guide pin clamping component is connected with the press-fit pneumatic component, so that the press-fit pneumatic component drives the guide pin clamping component to tighten and clamp a guide pin, and the guide pin is pressed into a pin seat on the station rotary disc. The utility model can reduce the problem of poor assembly and improve the assembly efficiency, and is applied to the technical field of optical fiber communication.

The utility model discloses a high-level self-flowing type solar centralized water supply system which comprises a water replenishing subsystem, a solar temperature adjusting subsystem and a hot water supply circulation subsystem. The water replenishing subsystem comprises a municipal pipeline, a steady flow tank, a water softener, a water tank, a silicon-phosphorus crystal processor, a first water replenishing pipe, a second bypass pipe and a second water replenishing pipe; the solar temperature adjusting subsystem comprises a water mixing tank, a solar heat collector, a high-position heat preservation water tank, a circulating pump set and a direct connecting pipe. The hot water supply circulation subsystem comprises a self-flowing type user hot water pipe network, a heat supply frequency conversion booster pump set and a water return pipe. Softening treatment and silicon-phosphorus crystal treatment are carried out on supplied hot water in the earlier stage, scaling of a hot water supply pipe network, metal corrosion and safety of hot water using of a user are greatly delayed, the system adopts the water mixing tank as transition to supply water to the user, the water temperature of stored water in the heat preservation water tank can be increased, and therefore the heat storage amount is adjusted; the solar heat collector and the adjacent pipeline thereof adopt an anti-freezing design, and can be automatically emptied in low-temperature weather.

A switchable capacity-increasing energy storage type solar centralized water supply system in a low-temperature area comprises a water supplementing subsystem, a solar temperature adjusting subsystem and a hot water supply circulation subsystem. The water supplementing subsystem comprises a water supplementing pipe; the solar temperature adjusting subsystem comprises a heating tank, a solar heat collector, a circulating pump set, an energy storage container, an energy storage capacity increasing container, a first direct connecting pipe and a second direct connecting pipe. The hot water supply circulation subsystem comprises a heat supply variable frequency booster pump set, a user hot water pipe network and a water return pipe. According to the utility model, the energy storage can be adjusted through the adjustable closed loop control, i.e., the capacity of the working medium for energy storage is increased when the sunlight is short or the occupancy rate of users in buildings such as hotels is increased, and the capacity of the working medium for energy storage is reduced when the sunlight is long or the occupancy rate of users in buildings such as hotels is reduced. Meanwhile, the defects that the service life of a heat storage working medium is short, the energy consumption is increased, the service life of equipment is shortened and the like caused by a large working medium container without adjustable energy storage are overcome.

This application relates to the technical field of stamping and die-cutting equipment, and discloses a quick-change mechanical locking stamping and die-cutting machine, comprising: a stamping and die-cutting machine body, a driving device arranged on the right side of the stamping and die-cutting machine body, a control device arranged on the top of the driving device, a top plate arranged on the top of the stamping and die-cutting machine body, a die-changing mechanism arranged below the top plate, a cleaning mechanism arranged behind the die-changing mechanism, a feeding mechanism arranged to the left of the cleaning mechanism, a first guide roller arranged on the right side of the stamping and die-cutting machine body, and a receiving device arranged to the right of the first guide roller. This invention solves the problems of low feeding accuracy due to large tension fluctuations during the feeding process in existing stamping and die-cutting machines, the time-consuming and labor-intensive manual die-changing process with unreliable locking safety hazards, and the problem that a single negative pressure waste suction method is incomplete in cleaning adhesive debris, affecting product quality and production continuity.

The present disclosure provides methods of treating industrial processes with compositions, methods of making the compositions, and various anti-freeze compositions suitable for use in industrial processes. The anti-freeze dispersant compositions can include, for example, a sulfonated dispersant and a winterizing solvent. The anti-freeze dispersant compositions can prevent fouling in industrial processes.

The present application relates to the technical fields of urea pyrolysis, and particularly relates to a high-temperature flue gas heat exchanger urea pyrolysis system, which comprises a boiler flue chamber, an ammonia injection chamber, a side chamber and a pyrolysis furnace, the boiler flue chamber and the ammonia injection chamber are sequentially communicated, the side chamber is connected between the boiler flue chamber and the ammonia injection chamber and is communicated with the boiler flue chamber and the ammonia injection chamber respectively. The pyrolysis furnace is arranged in the side chamber, the side chamber is provided with a heat exchange pipe, and the heat exchange pipe extends into the pyrolysis furnace. The ammonia injection chamber is provided with a gas injection pipe, and the pyrolysis furnace is communicated with the gas injection pipe. The high-temperature flue gas heat exchanger urea pyrolysis system can directly heat the fresh air in the heat exchange pipe by using the high-temperature flue gas branched in the boiler flue chamber, and the fresh air is directly sent into the pyrolysis furnace after being heated, so that no additional connecting pipeline is needed, heat loss in the pipeline conveying process is avoided, energy consumption in the flue gas pollution treatment process is reduced, standard flue gas discharge and reasonable resource utilization are realized.

This invention relates to the field of water filtration equipment, and particularly to a rare-earth magnetic alloy scale inhibitor and descaling water treatment device with a multi-layer filtration structure. It includes a housing, and within the filtration chamber, a magnetic purification filtration module comprising a magnetized cylinder installed within the filtration chamber and having a filtration channel. The filtration channel is vertically arranged, and the magnetized cylinder has an outlet and a first inlet communicating with the filtration channel. A magnetic purification component is also provided within the filtration channel, spanning across the filtration channel so that water flowing towards the outlet must pass through the magnetic purification component. The multi-layer filtration module includes a filtration component installed between the inlet and the magnetized cylinder, the filtration component being arranged in a covering shape on the outer periphery of the magnetized cylinder, so that water flowing in from the inlet passes through the filtration component before reaching the filtration channel. Through the combination of a multi-layer filtration structure and a magnetic purification filtration structure, multi-layer filtration is achieved, effectively improving the filtration effect.

The invention discloses a process for preparing pure water with low cost and high efficiency. The specific process is as follows: sand filtration, sand filtration, carbon filtration, passing through the precision filter, passing through the intermediate storage tank, passing through the precision filter, passing through the precision filter, passing through the precision filter, passing through the precision filter, passing through a mixed bed for anion and cation removal, passing through the storage tank, adding of a scale inhibitor, passing through the precision filter, steam heating, reverse osmosis for impurity removal and preparation of pure water. In order to reduce the cleaning frequency of a reverse osmosis membrane tube, reduce calcium and magnesium scaling of the reverse osmosis membrane tube and prolong the service life of the reverse osmosis membrane tube, after raw water is subjected to sand filtration and carbon filtration treatment, a large number of anions and cations in water are removed through an anion and cation mixed bed, and the water enters the reverse osmosis membrane tube to deeply remove calcium and magnesium ions after being softened; the scale inhibitor is added from the carbon filter and then is added in front of the precision filter; raw water heating is adjusted to be that outlet water of the precision filter is heated by hot steam, and the prepared pure water is used for producing a cobalt tetroxide precursor by a production line, so that the cleaning frequency of a reverse osmosis membrane tube is reduced, the service life of the reverse osmosis membrane tube is prolonged, and the preparation cost of the pure water is reduced.

This invention belongs to the field of water softening and sterilization technology, and discloses an ion-selective adsorption electrode, a micro-electric field adsorption system, and their application in water softening and sterilization / algae removal. An ion-selective adsorption electrode comprises polypolycarboxylate ion exchange fibers, activated carbon, a conductive agent, and a binder, wherein the mass percentage of the polypolycarboxylate ion exchange fibers is 5-20%. This invention uses CCEF-modified activated carbon as the cathode, and at the optimal doping level, it effectively removes Ca... 2+ and Mg 2+ The selectivity coefficients were 15.0 and 13.5, respectively, for Ca 2+ The electroadsorption capacity of the electrode is 311 μmol / g, which is much higher than that of the AC electrode. After 50 cycles of stability testing, the Ca... 2+ The electroadsorption capacity remained above 85%, demonstrating good regeneration ability. Activated carbon modified with nano-silver was used as the anode, and under electric field enhancement, the inhibition rates against bacteria and microalgae reached over 99% and 90%, respectively, exhibiting excellent antimicrobial contamination capabilities.

The utility model provides a kind of for preparing L-aspartic acid with the crystallizer of cleaning function, including crystallization kettle main part, located the feed channel of crystallization kettle main part top and be set to the crystallization chamber of crystallization kettle main part bottom wall, still include support frame, set on the drive mechanism and cleaning plate of support frame, support frame is located the top of crystallization chamber and is connected with the inner wall of crystallization kettle main part, drive mechanism is connected with cleaning plate and is used to drive cleaning plate rotation, the side wall of cleaning plate and the inner wall of crystallization kettle main part abuts, support frame supports drive mechanism and support plate, the side wall of cleaning plate and the inner side wall of crystallization kettle main part abuts, when crystallization chamber top scale, through the drive mechanism on support frame, cleaning plate slowly rotates, to scrape off the scale on the side wall of crystallization kettle main part, to reduce the scale on the inner side wall of crystallization kettle main part, so that scale is not easy to destroy the growth environment of crystal, improve the processing quality of ammonium sulfate product.

The utility model relates to the technical field of waste heat recovery, and discloses a circulating water waste heat recovery device utilizing a heat pump, which comprises a heat pump unit, the heat pump unit consists of a heat pump evaporator, a condenser, a compressor and a backflow expansion valve, the compressor is arranged behind the heat pump evaporator and the condenser, and the backflow expansion valve is arranged behind the heat pump evaporator and the condenser. An air inlet of the compressor is connected with an air outlet of the heat pump evaporator, an air outlet of the compressor is connected with an air inlet of the condenser, and a water conveying assembly is arranged at the front end of the heat pump evaporator. Through the water conveying assembly, the water conveying flow can be adjusted according to the temperature condition of circulating return water, so that the temperature of circulating water entering the heat pump evaporator is kept within a stable range, impurities in the circulating water can be screened out, the probability of blockage of all parts is reduced, and appropriate water treatment agents can be added into the heat source water conveying pipe regularly; and the scaling and corrosion probability of the water conveying component is further reduced.

The utility model relates to the field of pollutant treatment, in particular to a sewage treatment device which comprises a box body, a partition frame, a filler plate and an aeration disc, the box body is provided with a containing cavity, the partition frame is detachably connected to the inner wall of the containing cavity, the filler plate and the aeration disc are arranged on the two sides of the partition frame respectively, the filler plate is detachably connected to the upper end of the partition frame, and the aeration disc is detachably connected to the lower end of the partition frame. The outer wall of the aeration disc is fixedly connected with a hinge column, and the hinge column is rotatably connected to the inner wall of the accommodating cavity. Microorganisms attached to the filler plate decompose organic pollutants in sewage or waste gas through metabolism and convert the organic pollutants into harmless substances or stable residues, the aeration disc is externally connected with oxygen, necessary dissolved oxygen is provided for the microorganisms, the activity of the microorganisms is enhanced, the degradation efficiency is improved, the hinged column rotates to enable the aeration disc to rotate, scaling is reduced, and the aeration efficiency is improved. The pollutant treatment efficiency is improved.

The utility model discloses a corrosion-resistant electrode plate group of a wet electric dust collector. Comprising a frame body, a group of supporting rods fixedly mounted in a lower area in the frame body, a group of adjusting rods slidably mounted in an upper area in the frame body, a power assembly for driving the adjusting rods to slide, and a plurality of electrode plates vertically arranged in the frame body at equal intervals; the lower ends of the plurality of electrode plates are rotatably mounted on the two supporting rods, and the upper ends of the plurality of electrode plates are movably mounted on the two adjusting rods; a plurality of groups of electrode plates are arranged in the frame body, a plurality of groups of spray headers are arranged in the frame body, and the spray headers are positioned right above the connecting parts of the electrode plates and the supporting rods. The problems of poor corrosion resistance, scaling blockage, low cleaning efficiency, lack of dynamic adjustment and the like in the prior art are specifically solved.

The utility model belongs to the technical field of flue gas treatment, and discloses a desulfurization smoke dust recycling system which comprises a desulfurization tower, a dust remover, a granulation device and a circulating desulfurizer conveying device. According to the system, a spraying device in the desulfurizing tower is replaced by the high-pressure water gun, so that the atomization effect is good, the contact area of water, flue gas and a desulfurizing agent is increased, the desulfurizing agent is fully utilized, and the desulfurizing agent cost of an enterprise is reduced; gas carrying desulfurizer-containing dust from the desulfurizing tower is dedusted and dedusted by the deduster, desulfurized gas is discharged, the dust enters the ash hopper, is granulated by the granulating device and then flows into the desulfurizing tower by the circulating desulfurizer conveying device, so that the reutilization of the desulfurizer is realized, the resource is saved, and the cost is reduced.

The utility model provides a double-flange liquid level meter with an anti-scaling device. The double-flange liquid level meter comprises a flange assembly, an isolation diaphragm, a capillary tube and a differential pressure transmitter. Wherein the two flange assemblies are installed on protruding connecting pipes at the bottom and the top of the side wall of the storage tank respectively, each flange assembly is provided with an isolation diaphragm, and each isolation diaphragm is connected with the differential pressure transmitter through a capillary tube filled with a transmission medium; each flange assembly is provided with an anti-scaling device. According to the anti-scaling device, the transmission rod is installed on the flange, the stirring blade is connected to the transmission rod, and according to the characteristics of materials in the storage tank, the stirring blade slowly reciprocates in the connecting pipe through regular movement of the transmission rod, so that the materials in the connecting pipe are cyclically updated, and a blind area at the front end of the flange assembly is eliminated; scaling at the isolation diaphragm is reduced, the maintenance period of the flange is prolonged, and the maintenance cost is reduced.

The utility model discloses a turbulent flow structure for a heat exchange tube, a heat exchanger and a gas water heater, the turbulent flow structure comprises: a main body part, the main body part is provided with a plurality of turbulent flow holes at intervals along the length direction, and the two end parts of the main body part are respectively a water inlet end and a water outlet end; the spoilers are connected with the main body part, the spoilers correspond to the spoiler holes, and the joints of the spoilers and the main body part are located on the sides, close to the water inlet end, of the corresponding spoiler holes; wherein in every two adjacent spoilers, one spoiler extends in the direction away from the first surface of the main body part in the water flow direction, the other spoiler extends in the direction away from the second surface of the main body part in the water flow direction, and the first surface and the second surface are arranged in a back-to-back mode. Through the blocking effect of the spoilers, the laminar flow state of water flow is broken, the uniformity of water flow is accelerated, and the heat exchange efficiency is improved; the turbulent flow structure is simple in structure, convenient to form and machine and beneficial to reducing production cost.

The utility model discloses a voice coil motor, carrier, which is provided with a first through hole capable of placing a lens, and the side wall of the carrier is fixed with a coil, a base is provided with a second through hole coaxial with the first through hole, a spring piece is arranged between the carrier and the base, and the two sides of the spring piece are fixed with the carrier and the base respectively. The voice coil motor can balance the moment of force by canceling the upper spring and adjusting the lower spring wire width, can perfectly realize the use of one lower spring to carry the carrier, balance the moment of force, produce the tensile force opposite to the magnetic force, realize the use of one spring to realize the AF focusing stroke requirement, thereby reduce the cost.

This utility model discloses a robotic arm gripper for an automated vacuum coating line, comprising a slide rail with two sliding blocks slidably mounted on it. The sliding blocks are driven by a cylinder. Each sliding block has a base, and gripper arms are mounted at both ends of the base. A pad, made of polyurethane elastomer, is mounted on the inner side of each gripper arm. In this utility model, the inner side of the pad that contacts the substrate is grooved, with a certain degree of redundancy, ensuring the substrate is fully contained within the groove when the gripper grasps it, while also preventing the substrate from detaching from the gripper. Since the contact between the pad and the substrate is mostly planar, friction is reduced. Furthermore, the polyurethane elastomer material of the pad generates fewer frictional particles when in contact with the metal substrate, thus reducing the occurrence of crystal defects.

The invention provides cooling equipment for a lubricating oil station, and belongs to the technical field of lubricating oil stations. Comprising an oil tank, one end of the top of the oil tank is fixedly connected with a driving pump, the surface of the oil tank is fixedly connected with a filter, one end of the filter is fixedly connected with a cooler, one end of the cooler is fixedly connected with an oil outlet pipe, and the interior of the cooler is fixedly connected with a heat exchange pipe; and one end of the top of the cooler is fixedly connected with a pretreatment separation assembly, and the pretreatment separation assembly is used for removing bubbles and oil foam. By arranging the pretreatment separation assembly and the cooling adjustment assembly, the purity of pretreated oil liquid is improved, interference of bubbles and impurities on the subsequent heat exchange process is avoided, scaling of the inner wall of a heat exchange pipe is reduced, a strong turbulent flow state is formed, the thickness of a water boundary layer is effectively reduced, heat resistance is reduced, and the temperature distribution of cooling water is more uniform; and the overall heat exchange coefficient is increased, dynamic descaling is achieved, and stable operation of cooling equipment is guaranteed.

The utility model discloses a kind of heat exchange fin structures for plate heat exchanger unit, including heat exchange fin body, heat exchange fin body includes by upper to lower sequentially arranged fluid inlet, shunt area, heat exchange area, confluence area and fluid outlet, wherein, the surface of the heat exchange fin body is coated with anti-fouling coating;The heat exchange area is composed of several fluid channels in whole herringbone shape, fluid channel includes first wave-shaped flow channel in wave shape and second wave-shaped flow channel, which is communicated with first wave-shaped flow channel and oppositely arranged to form herringbone with first wave-shaped flow channel.The utility model not only is not easy to scale, heat exchange efficiency is high, and can effectively reduce fluid resistance.

The utility model discloses an old people perioperative period pressure sore prevention body position adjusting pad, and relates to the technical field of pressure sore prevention body positions, the old people perioperative period pressure sore prevention body position adjusting pad comprises a base, the top of the base is provided with an adjusting mechanism, the top of the base is provided with a turnover mechanism, and the adjusting mechanism comprises a sliding groove. A first bolt is unscrewed in a sliding block, then the sliding block can be moved, at the moment, the sliding block slides in a sliding groove, then the sliding block moves to enable a rotating shaft to drive a first moving rod to move, the rotating shaft moves through movement of the sliding block, and then the rotating shaft changes the angle of a foot rest through transmission. Then, the position of the backup plate can be changed through sliding of a second moving rod in a rotating frame, and the effects that the device can be adjusted, the user feels comfortable on the device, the body position can be changed according to the body state and needs of the patient so that the optimal blood circulation and comfort can be kept, and therefore the pressure sore phenomenon is prevented are achieved.

This invention relates to a DGT sampling device and method based on a glass sponge biomimetic eddy current anchoring structure, belonging to the field of environmental monitoring technology. The DGT sampling device includes a biomimetic outer shell, a filter protection layer, a diffusion layer, a bonding layer, and a base. The biomimetic outer shell includes a base grid layer and spiral guide ridges arranged along the axial direction of the outer shell on the outer surface of the base grid layer. The two ends of the biomimetic outer shell along its length are a closed end and an open end, respectively. The filter protection layer is disposed at the open end of the biomimetic outer shell. The diffusion layer is disposed on the side of the filter protection layer away from the biomimetic outer shell. The bonding layer is disposed on the side of the diffusion layer away from the filter protection layer. The base is used to fix the filter protection layer, diffusion layer, and bonding layer to the biomimetic outer shell. This invention aims to solve the problems of low mass transfer efficiency, measurement accuracy greatly affected by hydrodynamics, and susceptibility to physical wear and biofouling in existing DGT sampling technologies.

The application discloses a reboiler based on a multi-flow channel spiral groove structure, which comprises a shell, pipe plates are arranged at two ends of the shell, a plurality of heat exchange pipes are fixed in parallel between the pipe plates, a plurality of baffle plates are arranged perpendicularly to the heat exchange pipes, characterized in that the baffle plates are provided with pipe holes corresponding to the heat exchange pipes one by one, the baffle plates are divided into a liquid flow area at the bottom and a gas flow area at the top, and spiral grooves are arranged on the inner walls of the pipe holes in the liquid flow area. The spiral grooves are etched on the inner walls of the pipe holes of the bottom baffle plates to enhance turbulent flow, and air holes arranged uniformly around the pipe holes of the top are arranged to promote gas-liquid separation; the hexagonal baffle plate pipe hole structure is adopted, so that the heat transfer efficiency is obviously improved, the scaling is reduced, and the service life of the equipment is prolonged.

The invention provides an intelligent electric appliance and an electromagnetic valve, the electromagnetic valve comprises a valve seat, and the valve seat is divided into a first valve cavity and a second valve cavity; a flow guide assembly and an electrode array are arranged in the valve seat, the flow guide assembly is communicated with a first valve cavity and a second valve cavity of the valve seat, and the electrode array is arranged at the position, close to a port of the flow guide assembly, in the valve seat. Under the condition that the first valve cavity and the second valve cavity are separated from each other, the problem of TDS deposition caused by the flow speed of small-flow water flow is solved through the flow guide assembly, scaling is little, and the electrode array has the function of forming an electrochemical polarization layer by releasing a pulsed electric field, so that soluble TDS ions are kept in a suspended state, and crystallization deposition of the soluble TDS ions is prevented. And through the arrangement of the electrode array, the ion diffusion coefficient in the water flow can be improved, the scaling tendency is effectively reduced, and the risk of scaling in the flow guide assembly can be further reduced through the electrode array.

This invention discloses a three-compartment multi-purpose plastic-aluminum composite radiator, relating to the field of radiator technology. In this invention, two cleaning sections are symmetrically rotated on the lower manifold pipe. The water-driven end of the cleaning section is located inside the lower manifold pipe and is driven by water flow. The heat exchange assembly consists of a heat exchange section and a flow guiding section. The cleaning section is located inside the flow guiding plastic pipe and is used to clean scale buildup inside the flow guiding plastic pipe. The heat exchange section is sleeved and installed on the flow guiding plastic pipe, and conducts heat through contact with the radiator assembly, transferring heat from the flow guiding plastic pipe to the radiator assembly. Adjacent lower manifold pipes and adjacent upper manifold pipes are interconnected. This invention utilizes the impact of flowing hot water on the water-driven impeller to cause it to rotate, driving the cleaning component to rotate along the inner wall of the flow guiding plastic pipe, thus scraping the inner wall of the flow guiding plastic pipe. The scraped-off scale is discharged from the flow guiding plastic pipe with the hot water flow, effectively reducing the amount of scale buildup on the inner wall of the flow guiding plastic pipe on the radiator after long-term use.

The utility model is suitable for silicon carbide ceramic membrane filtration technical field provides a kind of self backwashing cleaning mode's silicon carbide ceramic membrane filtration equipment, it includes: casing, the top of casing is equipped with first arc cavity, the connecting place of first arc cavity with casing is equipped with first round plate, the bottom plate of casing is equipped with second arc cavity, the connecting place of second arc cavity with casing is equipped with second round plate, the inside of casing is equipped with several groups of ceramic membrane, the top of first arc cavity is equipped with sealing connector, the top of sealing connector is equipped with motor, the output of motor is equipped with central shaft, the top of first arc cavity is equipped with water inlet, one side of casing is equipped with water outlet, the bottom of casing is equipped with blowdown, the central shaft is equipped with plugging assembly, by this, the utility model improves the efficiency of filtration and backwashing, reduces the pollution of ceramic membrane to plug at the same time, prolongs the service life of ceramic membrane.

The present application belongs to the technical field of slurry bed hydrogenation, and discloses a residual oil processing system and method. The system comprises a residual oil hydrogenation reaction device, an oil-gas separation unit, an atmospheric distillation unit, a vacuum distillation unit and a raw oil feeding pipeline. The present application has the technical characteristics of simple structure, improved economic benefits, reduced investment cost and device operation energy consumption, etc.

The invention discloses a mixed insulator umbrella skirt anti-dirt-deposition protrusion structure, relates to the technical field of insulator umbrella skirts, solves the problem that the anti-dirt-deposition effect is not ideal, and comprises a core rod, the outer surface of the core rod is movably connected with a sheath, the bottom of the sheath is connected with a sealing plug in an inserted mode, the surface of the sealing plug is provided with a limiting mechanism, and the limiting mechanism is arranged on the outer surface of the core rod. The bottom of the large umbrella skirt is provided with the first protrusions which are annularly and evenly distributed, the top of the small umbrella skirt is provided with the second protrusions which are annularly and evenly distributed, a three-dimensional flow disturbing and blocking system is formed, the first protrusions below the large umbrella skirt can effectively disturb down air flow, dirt is prevented from vertically falling down and being attached to the surface of the small umbrella skirt below, and the anti-pollution effect is achieved. The second protrusions on the small umbrella skirts can change upflow and creepage paths, dirt accumulation at the roots of the umbrella skirts is reduced, the protrusions on the large umbrella skirts and the small umbrella skirts act synergistically, and the overall self-cleaning capacity and anti-pollution flashover performance of the umbrella skirts are remarkably improved from the two aspects of aerodynamics and physical shielding.

The application discloses a photoresist supply system and method based on visual bubble detection and timing control, relates to the field of semiconductor manufacturing, and comprises the following steps: collecting a photoresin flow image in a pipeline through a visual sensing unit, identifying whether there is a bubble in the photoresin fluid through image analysis, and controlling the on-off state of a main flow path and a bypass flow path and the working mode of a negative pressure generating unit according to a preset timing when there is a bubble in the photoresin fluid. In this way, the photoresin fluid containing the bubble is sequentially discharged from the bypass flow path, the pipeline pressure is stabilized, the fluid at the end of the nozzle is sucked back to remove the bubble, and the whole process does not need manual intervention, can realize standardized and consistent process control, can avoid that the photoresin containing the bubble is attached and coated on the wafer surface from the source, and greatly reduces coating problems caused by the bubble, thereby reducing the product rework disposal cost.